JP7744513B2 - construction equipment - Google Patents

Description

The present invention relates to construction equipment.

Conventionally, self-propelled devices and plant-type devices have been known as soil improvement machines (see, for example, Patent Documents 1 and 2).

In the case of plant-type equipment, it has multiple units, so these multiple units need to be transported to the construction site, etc. and installed in the appropriate positions.

Japanese Patent Application Laid-Open No. 2003-71427 JP 2011-156735 A

To ensure that multiple units are positioned appropriately when installed, each unit has a connecting part for engaging (connecting) with other units.

Typically, when installing a unit at a site, the unit is lifted using a crane or similar device and transported to the vicinity of the installation location, and then lowered into the installation location while engaging the connecting parts of the unit with other units. However, with this installation method, there is a risk that the unit may not be installed in the appropriate location due to the relationship between the degree of freedom of the connecting parts and the degrees of freedom of other parts.

In one aspect, the present invention aims to provide construction equipment that allows units to be installed in an appropriate condition at a construction site, etc. Another object of the present invention is to provide construction equipment that allows units to be easily installed.

In a first aspect, the construction equipment comprises a first unit that performs a first process on an object to be treated, and a second unit that performs a second process on the object to be treated, the second unit having a main body that performs the second process and a base that supports the main body, the base being connected to the main body at a first connection portion, and the main body engaging with the first unit at a second connection portion, and a variable mechanism having a high-rigidity metal portion that changes the distance between the first connection portion and the second connection portion is provided at least either between the base and the main body or between the main body and the first unit.

In a second aspect, the construction equipment comprises a first unit having a treatment device that performs a first process on an object to be treated and a base that supports the treatment device, and a second unit having a main body that performs a second process on the object to be treated and a first support part that supports the main body, wherein the first support part has an axial member extending in a uniaxial direction within the horizontal plane of the base and a support member that supports the axial member rotatably around the uniaxial direction.

In the first aspect, the unit can be installed in an appropriate condition at a construction site, etc. In the second aspect, the unit can be easily installed.

FIG. 1 is a perspective view of a mixing system according to one embodiment. FIG. 2 is a partial cross-sectional view of the soil mixing device. FIG. 3(a) is a perspective view of the discharge belt conveyor and the soil mixing device, and FIG. 3(b) is a view showing the discharge belt conveyor and the soil mixing device as viewed from the +Y side. 4A is a cross-sectional view taken along line AA in FIG. 2, and FIG. 4B is a diagram for explaining a case where the conveyor body of the discharge belt conveyor is arranged in a misaligned position. FIG. 2 is a perspective view showing a V-groove bearing mechanism. Figure 6(a) is an oblique view showing a portion of the input belt conveyor 12, the soil mixing device 10, and the discharge belt conveyor 14, and Figure 6(b) is a view showing a portion of the input belt conveyor, the soil mixing device, and the discharge belt conveyor as viewed from the +Y direction. 7A is an enlarged perspective view showing the vicinity of the front leg of the input belt conveyor, and FIG. 7B is a perspective view showing the vicinity of the end of the input belt conveyor on the +Y side. 8(a) to 8(c) are diagrams (part 1) that schematically show the procedure for installing the input belt conveyor. 9(a) to 9(c) are diagrams (part 2) that schematically show the procedure for installing the input belt conveyor. 10A and 10B are diagrams for explaining the case where the head chute is not lifted up. 11(a) to 11(f) are diagrams for explaining the effects of the link mechanism. FIG. 12(a) is a diagram showing one of the weighing belt conveyors as viewed from the +X direction, and FIG. 12(b) is a perspective view showing the two weighing belt conveyors and the feeding belt conveyor. FIG. 2 is an enlarged perspective view showing the vicinity of a front leg of one of the weighing belt conveyors. 14(a) and 14(b) are perspective views showing an apron feeder. FIG. 10 is a diagram showing the other weighing belt conveyor as viewed from the +X direction. FIG. 10 is an enlarged perspective view showing the vicinity of the front leg of the other weighing belt conveyor. FIG. 10 is a diagram schematically illustrating the reference state of two weighing belt conveyors and a feeding belt conveyor as viewed from the +Z direction. FIG. 18(a) is a schematic diagram showing a state in which the conveyor body is tilted from the reference state, and FIG. 18(b) is a schematic diagram showing a state in which the tail frame is tilted from the reference state. 19(a) and 19(b) are diagrams (part 1) for explaining a case where a displacement occurs in the positional relationship with the feeding belt conveyor due to an impact when the weighing belt conveyor is installed. FIG. 2 is a diagram (part 2) for explaining a case where a positional deviation occurs in relation to the feeding belt conveyor due to an impact when the weighing belt conveyor is installed. FIG. 2 is a diagram schematically illustrating the degree of freedom of each part in a mixing system according to one embodiment.

Below, a mixing system according to one embodiment will be described in detail based on Figures 1 to 21.

Figure 1 shows a perspective view of a mixing system 100 as a construction device according to one embodiment. The mixing system 100 in Figure 1 is a system that is installed at a construction site or the like.

As shown in Figure 1, the mixing system 100 comprises a soil mixing device (twister) 10, an input belt conveyor 12, a discharge belt conveyor 14, subunits, weighing belt conveyors 16 and 18, apron feeders 20 and 22, and a powder feeder 24. Each unit of the mixing system 100 of this embodiment is a stationary unit that is placed at a predetermined location on the construction site. Note that in Figure 1, the vertical direction is the Z-axis direction, and in a plane perpendicular to the Z-axis, the left-right direction of Figure 1 is the X-axis direction, and the depth direction is the Y-axis direction.

(Regarding the soil mixing device 10)
The soil mixing apparatus 10 includes an impact member (impact member) that rotates at high speed inside a cylindrical container. The impact force of the impact member crushes and refines construction waste soil introduced into the container. In other words, in this embodiment, the soil mixing apparatus 10 corresponds to the first unit, and the processing performed by the soil mixing apparatus 10 corresponds to the first step. The construction waste soil introduced into the soil mixing apparatus 10 can be mixed with additives (lime-based solidification materials such as quicklime and slaked lime, cement-based solidification materials such as ordinary cement and blast furnace cement, soil improvement materials made of polymeric materials, natural fibers, etc.) as needed. This allows the properties and strength of the improved soil to be adjusted. In other words, in this embodiment, the construction waste soil or construction waste soil mixed with additives corresponds to the object to be processed.

Figure 2 shows a partial cross-section of the soil mixing device 10 as viewed from the +Y side. As shown in Figure 2, the soil mixing device 10 comprises a stand 102, a fixed drum 104, a rotating drum 106, and a rotation mechanism 108.

The stand 102 is a platform that holds each part of the soil mixing device 10. The fixed drum 104 is a cylindrical container that is fixed to the stand 102. The material to be treated is introduced into the fixed drum 104 through the inlet member 111, and the material (construction generated soil) is guided into the rotating drum 106 located below (on the -Z side of) the fixed drum 104.

The rotating drum 106 is a cylindrical container that rotates (spins) around the central axis of the cylinder (around the Z axis) by a rotating drum drive motor (not shown). The rotating drum 106 is supported by the frame 102 via multiple support rollers 110, allowing it to rotate smoothly by receiving the rotational force of the rotating drum drive motor. The rotational direction of the rotating drum 106 and the rotational direction of the impact member 112 may be the same or opposite.

One or more scraping rods (scrapers) 114 are provided inside the rotating drum 106. The scraping rods 114 are in contact with the inner circumferential surface of the rotating drum 106 and are fixed to the fixed drum 104. Therefore, as the rotating drum 106 rotates, the scraping rods 114 move relatively along the inner circumferential surface of the rotating drum 106. As a result, even if the treatment object adheres to the inner circumferential surface of the rotating drum 106, the treatment object will be scraped off by the scraping rods 114 as the rotating drum 106 rotates.

A chute 113 is provided below (on the -Z side of) the rotating drum 106. The chute 113 functions as an entrance for guiding the processing object processed inside the rotating drum 106 to the discharge belt conveyor 14. The discharge belt conveyor 14 surrounds the lower opening of the chute 113 (the exit of the chute 113).

The rotation mechanism 108 has a rotating shaft 116 extending vertically (in the Z-axis direction) and positioned at the center of the fixed drum 104 and the rotating drum 106, a pulley 118 provided at the upper end of the rotating shaft 116, and two impact members 112 arranged in two rows, one above the other, near the lower end of the rotating shaft 116.

The rotating shaft 116 is a cylindrical member that is held by the base 102 in a freely rotatable state via two ball bearings 120a, 120b provided on the upper surface of the base 102. A spacer 122 is provided between the two ball bearings 120a, 120b, creating a predetermined gap between the ball bearings 120a, 120b. The lower end of the rotating shaft 116 is located inside the rotating drum 106 and is the free end. In other words, the rotating shaft 116 is cantilevered.

The pulley 118 is connected to the motor 155 (not shown in Figure 2, see Figure 1) via a belt. When the motor 155 rotates, the pulley 118 and the rotating shaft 116 rotate.

Each of the two-stage impact members 112 has multiple (e.g., four) metal chains 124, each with a thick steel plate 126 at the end. The chains 124 are arranged at equal intervals around the rotating shaft 116.

The impact member 112 rotates centrifugally due to the rotation of the rotating shaft 116, and the thick plates 126 move at high speed near the inner surface of the rotating drum 106, crushing and mixing the material to be treated. The number of chains 124 and thick plates 126 of the impact member 112 can be adjusted depending on the type and properties of the raw soil, the amount to be treated, the type and amount of additives, the target quality of the improved soil, etc.

In the soil mixing device 10 of this embodiment, the material to be treated transported by the feed belt conveyor 12 is fed into the fixed drum 104 via the feed inlet member 111, where it is crushed and mixed by the impact member 112 inside the rotating drum 106 and then discharged below the rotating drum 106. The material to be treated discharged below the rotating drum 106 passes through the chute 113 and is fed onto the discharge belt conveyor 14, where it is transported by the discharge belt conveyor 14 in the -X and +Z directions in Figure 2.

In this embodiment, by adopting a rotation mechanism 108 using two ball bearings 120a, 120b as described above, it is possible to shorten the length of the rotation shaft 116 while maintaining crushing and mixing performance and a small amount of deflection of the rotation shaft 116. This allows the height dimension of the soil mixing device 10 to be reduced.

Returning to Figure 1, the soil mixing apparatus 10 (frame 102) is installed on an iron plate 130 laid on the ground. Because the ground below the iron plate 130 is leveled horizontally, the upper surface of the iron plate 130 is also horizontal. Therefore, the soil mixing apparatus 10 is also installed without tilt (with the rotation axis 116 extending in the Z-axis direction).
That is, in this embodiment, the iron plate 130 corresponds to a base.

(Regarding the discharge belt conveyor 14)
Figure 3(a) shows an oblique view of the discharge belt conveyor 14 and the soil mixing device 10, and Figure 3(b) shows the discharge belt conveyor 14 and the soil mixing device 10 as viewed from the +Y side (side view).

As shown in Figures 3(a) and 3(b), the discharge belt conveyor 14 comprises a conveyor body 142, a front leg 144, and a rotary bearing mechanism 146.

The conveyor body 142 has a belt that transports the crushed and mixed material discharged from the soil mixing device 10 in the −X direction and the +Z direction.
That is, in this embodiment, the discharge belt conveyor 14 corresponds to the second unit, and the conveyor body 142 corresponds to the main body. Also, in this embodiment, the transport of the processing object corresponds to the second process.

The front legs 144 are mounted near the -X side end of the bottom surface of the conveyor body 142 via a pivot shaft 148. When installed at a construction site, the front legs 144 are opened in the direction of arrow AR1 shown in Figure 3(b) and placed in an upright position as shown in Figure 3(b). In other words, the discharge belt conveyor 14 is freestanding. On the other hand, when transporting the discharge belt conveyor 14, the front legs 144 are rotated in the direction of arrow AR2 shown in Figure 3(b) and placed in a folded position. This allows the volume of the discharge belt conveyor 14 to be reduced during transport, making it easier to transport.

As shown in Figure 3(a), the front leg 144 comprises a leg body 145 having a substantially rectangular frame shape and a spherical bearing mechanism 147 provided on the underside of the leg body 145. The spherical bearing mechanism 147 is a connecting part that allows the leg body 145 to change its position relative to the steel plate 130, and includes a spherical seat 152, a spherical bearing member 154 provided within the spherical seat 152, and a cylindrical member 156 that connects the spherical bearing member 154 to the leg body 145. That is, in this embodiment, the front leg 144 corresponds to the second support part, and the leg body 145 corresponds to the leg. The spherical seat 152 is fixed with bolts or the like to the steel plate 130 laid on the ground once the position and posture of the discharge belt conveyor 14 is fixed. The spherical bearing member 154 is rotatable around the X-axis, the Y-axis, and the Z-axis relative to the spherical seat 152. In other words, the spherical bearing member 154 has three degrees of freedom (θx, θy, θz).

As shown in Figure 3(a), the rotary bearing mechanism 146 comprises a pair of shaft holding members 244 (the shaft holding member 244 on the -Y side is not shown) provided on the +Y side and -Y side of the conveyor body 142, a cylindrical shaft member 245 extending in the Y-axis direction held by the pair of shaft holding members 244, and a pair of block members 246 with which the shaft member 245 engages.

A V-groove is formed on the top surface of the block member 246, and the shaft member 245 engages with the V-groove. The pair of block members 246 are aligned along the Y-axis direction and fixed to the iron plate 130 with bolts or the like. By engaging with the block member 246, movement of the shaft member 245 in the X-axis direction, Z-axis direction, and θx and θz directions is restricted, while movement in the Y-axis direction and rotation around the Y-axis are permitted. Note that a U-groove may be formed in the block member 246 instead of the V-groove. In other words, in this embodiment, the rotary bearing mechanism 146 corresponds to the first support part, and the block member 246 corresponds to a support member that supports the shaft member 245 so that it can rotate around one axis (the Y-axis in the figure).

Figure 21 schematically shows the degrees of freedom of each part within the mixing system 100 in this embodiment. As shown in Figure 21, the discharge belt conveyor 14 is fixed (●) between the front legs 144 and the conveyor body 142, and the front legs 144 allow rotational position changes (θx, θy, θz) around the X, Y, and Z axes via the spherical bearing mechanism 147. Furthermore, the rotational bearing mechanism 146 allows rotational position changes (θY) around the Y axis of the conveyor body 142 relative to the iron plate 130 and positional changes in the Y axis. Therefore, by adjusting the position in the Y axis of the rotational bearing mechanism 146 and adjusting the fixed position of the spherical seat 152 of the spherical bearing mechanism 147, the conveyor body 142 can be placed in an appropriate position (a predetermined position relative to the earth's axis).

In this embodiment, when installing the discharge belt conveyor 14 at a construction site, the base 102 of the soil mixing device 10 is placed on the steel plate 130, and the discharge belt conveyor 14 is lifted using a crane or the like and installed from above in the position shown in Figure 3(a). As shown in Figure 3(a), the base 102 has a beam member 163 extending in the X-axis direction but no beam member extending in the Y-axis direction, making it possible to install the discharge belt conveyor 14 from above the base 102. When the discharge belt conveyor 14 is installed, the front legs 144 are folded. Therefore, after installing the discharge belt conveyor 14 above the steel plate 130, the worker opens the front legs 144 in the direction of arrow AR1 and stands the front legs 144 on the ground. At this time, the shaft member 245 of the rotary bearing mechanism 146 is engaged with the block member 246 fixed on the iron plate 130 in advance, the position of the discharge belt conveyor 14 in the Y-axis direction is adjusted, and with the posture of the discharge belt conveyor 14 stable, the spherical seat 152 of the front leg 144 is fixed to the iron plate 130. If a pair of block members 246 are installed side by side along the Y-axis direction, simply by engaging the shaft member 245 of the rotary bearing mechanism 146 with the block member 246, the conveying direction of the discharge belt conveyor 14 can be aligned with a direction perpendicular to the Y-axis direction, and the short side direction (width direction) of the discharge belt conveyor 14 can be aligned with the Y-axis direction.

This prevents misalignment of the conveyor body 142 with respect to the chute 113, as shown in Figure 4(a), which is a cross-sectional view of line A-A in Figure 2. For example, if the longitudinal direction of the conveyor body 142 deviates from the X-axis direction when viewed from above, a portion of the conveyor body 142 (e.g., the conveyor frame 142a provided on the +Y and -Y sides of the conveyor body 142) may come into contact (interfere) with the chute 113, as shown by the dashed circle B in Figure 4(b). Furthermore, if the longitudinal direction of the conveyor body 142 deviates from the X-axis direction when viewed from above, a gap may form between the chute 113 and the conveyor frame 142a, as shown by the dashed circle C in Figure 4(b), potentially allowing dust to leak to the outside. Therefore, by aligning the longitudinal direction of the conveyor body 142 with the X-axis direction (the direction perpendicular to the Y-axis direction), as in this embodiment, mechanical interference between the conveyor body 142 and the chute 113 and the generation of dust can be suppressed.

In addition, in this embodiment, the portion of the rotary bearing mechanism 146 that needs to be fixed to the iron plate 130 (block member 246) can be fixed to the iron plate 130 before the discharge belt conveyor 14 is installed. Therefore, when fixing the block member 246, the conveyor body 142 and the like do not get in the way, so there is no need to reach into narrow spaces when tightening the block member 246 with bolts, etc., making the work easier.

In addition, in the past, the front legs and the conveyor body were separate, and the front legs were set up at the construction site in advance with anti-tip measures in place, and then the conveyor body was installed from above.However, in this embodiment, the conveyor body 142 and front legs 144 are integrated, making it possible to install the discharge belt conveyor 14 at the construction site without any hassle.

While the above description describes a case in which the front leg 144 includes a spherical bearing mechanism 147, this is not a limitation. Instead of the spherical bearing mechanism 147, the front leg 144 may include a support mechanism (V-groove bearing mechanism) 147', as shown in FIG. 5, which includes a rod-shaped member 154' with a hemispherical underside and a block member 152' with a V-shaped groove. The V-groove bearing mechanism 147' shown in FIG. 5 allows the rod-shaped member 154' to move in the Y-axis direction and rotate in the θx, θy, and θz directions relative to the block member 152'. In this case, the discharge belt conveyor 14 can be easily installed by simply placing the rod-shaped member 154' in the V-groove of the block member 152' fixed on the iron plate 130. The V-groove of the block member 152' may be a U-groove.

(Regarding the input belt conveyor 12)
Returning to Figure 1, the input belt conveyor 12 is connected near its -X end to the soil mixing device 10. Figure 6(a) shows a perspective view of the input belt conveyor 12, the soil mixing device 10, and a portion of the discharge belt conveyor 14, and Figure 6(b) shows the input belt conveyor 12, the soil mixing device 10, and a portion of the discharge belt conveyor 14 as viewed from the +Y direction.

The input belt conveyor 12 comprises a conveyor body 202, front legs 204, and a tail stand 206.

The conveyor body 202 has a belt that transports additives supplied from the powder feeder 24 (see Figure 1), construction generated soil (hereinafter referred to as the first base material) supplied from the weighing belt conveyor 16 (see Figure 1), and construction generated soil (hereinafter referred to as the second base material) supplied from the weighing belt conveyor 18 (see Figure 1) to the soil mixing device 10. At the -X side end of the conveyor body 202, a head chute 203 is provided as a guide that directs each base material transported by the conveyor body 202 to the inlet member 111 (see Figure 2) of the soil mixing device 10. In other words, in this embodiment, the input belt conveyor 12 corresponds to the second unit, and the transportation of construction generated soil performed by the input belt conveyor 12 corresponds to the second process. Furthermore, in this embodiment, the conveyor body 202 corresponds to the main body, and the tail platform 206 corresponds to the platform.

The front legs 204 are provided near the -X end of the bottom surface of the conveyor body 202. As shown in Figure 6(a), the front legs 204 are provided on the bottom surface of the conveyor body 202 via a Z rotation axis 210. Strictly speaking, the Z rotation axis 210 rotates around a direction tilted from the Z axis, but for convenience of explanation, it will be described as rotating around the Z axis (θz direction).

Figure 7(a) shows an enlarged view of the vicinity of the front leg 204. As shown in Figure 7(a), the front leg 204 has a first member 212 extending in the Y-axis direction, a pair of legs 214A, 214B provided at both ends of the first member 212 in the Y-axis direction, and a cylindrical member 216 provided in a state connecting the legs 214A, 214B.

A pair of retaining members 170A, 170B are provided on the base 102 of the soil mixing device 10. The front legs 204 are connected to the base 102 (soil mixing device 10) by engaging the cylindrical members 216 at two points in the U-grooves 103 of the retaining members 170A, 170B. The front legs 204 have a degree of freedom of rotation (θy) around the Y-axis relative to the base 102, as the cylindrical members 216 engage with the U-grooves 103. In other words, in this embodiment, the front legs 204 correspond to the second connection part.

Returning to Figures 6(a) and 6(b), the tail frame 206 has a rectangular frame portion 220, multiple legs 222 (six in Figure 6(a)) provided on the -Z side of the rectangular frame portion 220, a spherical bearing mechanism 224 provided on the beam portion 221 (see Figure 7(b)) of the rectangular frame portion 220, a link mechanism 225 provided between the spherical bearing mechanism 224 and the conveyor main body 202, and three support mechanisms 226A, 226B, and 226C provided on the rectangular frame portion 220. That is, in this embodiment, the spherical bearing mechanism 224 corresponds to the first connection portion, and the link mechanism 225 corresponds to the variable mechanism.

Each leg 222 has a screw-type height adjustment mechanism, and by adjusting the height adjustment mechanism, the tail mount 206 can be placed on the ground without any rattling.

The spherical bearing mechanism 224 has a configuration similar to that of the spherical bearing mechanism 147 described above. The spherical bearing mechanism 224 allows the conveyor body 202 to change its position relative to the rectangular frame portion 220 in the rotational direction around the X axis (θx), the Y axis (θy), and the Z axis (θz).

The link mechanism 225 functions as a variable mechanism that changes the distance between the spherical bearing mechanism 224 and the front leg 204 (or the Z rotation axis 210), and as a translation mechanism that slides the conveyor body 202 longitudinally. The link mechanism 225 is made of a highly rigid metallic material. As can be seen from Figure 7(b), which shows an enlarged schematic view of the vicinity of the link mechanism 225, the link mechanism 225 includes a rod-shaped member 228 connected to the spherical bearing mechanism 224 and a pair of link members 229 (the link member on the -Y side is not shown) attached to both ends of the rod-shaped member 228. The upper end of the link member 229 is rotatably attached to the conveyor body 202 via a rotation axis 229a. The link mechanism 225 and the spherical bearing mechanism 224 allow the conveyor body 202 to move in the X-axis direction relative to the tail frame 206. The link mechanism 225 bears part of the load of the conveyor body 202.

Returning to Figures 6(a) and 6(b), the support mechanism 226A has two pillar members 236A and 236B fixed to the rectangular frame portion 220 and extending in the Z-axis direction, and the pillar members 236A and 236B support another belt conveyor (in this embodiment, the weighing belt conveyor 16). A U-groove 234 is formed at the upper end of the pillar members 236A and 236B of the support mechanism 226A (see Figure 13). Details will be described later, but the support mechanism 226A supports the other belt conveyor (in this embodiment, the weighing belt conveyor 16) in this U-groove 234.

As shown in FIG. 6(b), the support mechanism 226B has two pillar members 238A, 238B fixed to the rectangular frame portion 220 and extending in the Z-axis direction. A U-shaped groove 240 is formed at the upper end of the pillar members 238A, 238B (see FIG. 16). The support mechanism 226B supports another belt conveyor (in this embodiment, the weighing belt conveyor 18) in this U-shaped groove 240. As will be described in detail later, the support mechanisms 226A, 226B are located equidistant from the spherical bearing mechanism 224. That is, in this embodiment, the input belt conveyor 12 corresponds to the first unit, and the weighing belt conveyor 16 and the weighing conveyor 18 correspond to the second unit. Furthermore, in this embodiment, the tail frame 206 corresponds to the first section, the position of the spherical bearing mechanism 224 corresponds to the first position, and the conveyor body 202 corresponds to the second section.

Support mechanism 226C is similar to support mechanisms 226A and 226B, although its installation position and orientation are different from those of support mechanisms 226A and 226B. Support mechanism 226C can support other belt conveyors in the same manner as support mechanisms 226A and 226B. Note that in the mixing system 100 of FIG. 1, support mechanism 226C does not support other belt conveyors, but support mechanism 226C can be made to support other belt conveyors as needed. Furthermore, at least one of support mechanisms 226A, 226B, and 226C may support a belt conveyor, or all of support mechanisms 226A, 226B, and 226C may not support a belt conveyor.

In this embodiment, with the soil mixing device 10 and discharge belt conveyor 14 installed at the construction site, the input belt conveyor 12 is lifted by a crane or the like and placed from above in the position shown in Figure 6(a). The cylindrical members 216 of the front legs 204 of the input belt conveyor 12 are then engaged with the U-grooves 103 (two locations) of the retaining members 170A, 170B (see Figure 7(a)) provided on the base 102 of the soil mixing device 10. The height adjustment mechanism of the legs 222 is also adjusted to eliminate rattle of the tail base 206. As shown in Figure 21, the input belt conveyor 12 has a degree of freedom in the θy direction relative to the base 102, and the conveyor body 202 has a degree of freedom in the θz direction relative to the front legs 204. The conveyor body 202 also has degrees of freedom in the θx, θy, and θz directions relative to the rectangular frame 220. This allows the posture of the conveyor body 202 around the X axis to be determined so as to follow the posture of the base 102. Furthermore, even if the rectangular frame portion 220 is tilted with respect to the horizontal plane, the tilt can be absorbed by the spherical bearing mechanism 224.

In this embodiment, as shown in Figures 6(a) and 6(b), the front legs 204 of the loading belt conveyor 12 are shorter than when they are installed directly on the ground, and during transportation, the height of the part where the front legs 204 are located and the height of the part where the spherical bearing mechanism 224 is located are approximately the same. As such, the overall height of the loading belt conveyor 12 during transportation is low, making it easy to load onto a truck and transport. Furthermore, in this embodiment, since the overall height is approximately the same, the loading belt conveyor 12 can stand on its own when the loading belt conveyor 12 and the soil mixing device 10 are disengaged. This eliminates the need for auxiliary equipment to help the loading belt conveyor 12 stand on its own when storing the loading belt conveyor 12, etc.

Next, we will explain in more detail how to install the input belt conveyor 12.

In this embodiment, the head chute 203 is rotatable around the Y axis, centered on the rotation axis 250 shown in Figures 6(a) and 6(b).

Figures 8(a) to 9(c) schematically show the procedure for installing the input belt conveyor 12. Note that in Figures 8(a) to 9(c), only the stand 102, holding member 170A, and input port member 111 of the soil mixing device 10 are shown. Furthermore, when installing the input belt conveyor 12, the discharge belt conveyor 14 is already installed near the soil mixing device 10, but in Figures 8(a) to 9(c), the discharge belt conveyor 14 is omitted from the illustration to simplify the drawings.

First, as shown in Figure 8(a), the feeding belt conveyor 12 is transported and placed near the soil mixing device 10 using the crane 360. At this time, the head chute 203 is in the same state as when the mixing system 100 is operating (first position shown in Figure 6(a)).

Next, as shown in Figure 8(b), the head chute 203 is flipped upward (a second position different from the first position). In other words, in this embodiment, the head chute 203 corresponds to the specific part. Then, as shown in Figure 8(c), the input belt conveyor 12 is lifted by the crane 360. At this time, the lengths of the wires connecting the input belt conveyor 12 and the crane 360 are approximately the same. This allows the input belt conveyor 12 to be lifted approximately horizontally.

Next, as shown in Figure 9(a), the cylindrical members 216 of the front legs 204 of the input belt conveyor 12 are engaged with the holding members 170A, 170B (U-groove 103) provided on the frame 102, while the tail frame 206 side of the input belt conveyor 12 is lowered. This allows the tail frame 206 to be grounded, as shown in Figure 9(b). Note that when installing the input belt conveyor 12, the tail frame 206 may be grounded first, and then the front legs 204 may be engaged with the holding members 170A, 170B.

Then, the head chute 203 is returned to its original position (the same first position as in Figure 8(a)) as shown in Figure 9(c), thereby completing the installation of the input belt conveyor 12.

The reason why the head chute 203 is raised when installing the loading belt conveyor 12, as shown in Figures 8(b) to 9(b), is that if the loading belt conveyor 12 were not raised and transported in a substantially horizontal position, approaching the sediment mixing device 10, there is a risk of contact (interference) between the head chute 203 and a part of the sediment mixing device 10 (e.g., the inlet member 111), as shown in Figure 10(a). To avoid this contact, it is possible to transport the loading belt conveyor 12 in an inclined state by varying the lengths of the wires connecting the loading belt conveyor 12 and the crane 360, as shown in Figure 10(b). However, transporting the loading belt conveyor 12 in an inclined state makes stable transport difficult. In contrast, by making the head chute 203 capable of being raised, as in this embodiment, stable transport of the loading belt conveyor 12 is possible.

In addition, in this embodiment, a link mechanism 225 is provided on the input belt conveyor 12, making it easier to set up the input belt conveyor 12. This point will be explained based on Figures 11(a) to 11(f). Note that Figures 11(a) to 11(f) show an example in which the tail platform 206 is first placed on the ground, and then the front legs 204 are engaged with the holding members 170A and 170B.

Figures 11(a) to 11(c) show the state in which the tail platform 206 is first grounded when installing the input belt conveyor 12. The position of the input belt conveyor 12 shown in Figure 11(a) is the normal position (neutral position), the position of the input belt conveyor 12 shown in Figure 11(b) is a position behind the normal position, and the position of the input belt conveyor 12 shown in Figure 11(c) is a position ahead of the normal position.

When the front legs 204 of the input belt conveyor 12 are engaged with the holding members 170A and 170B while positioned in the correct position as shown in Figure 11(a), the state becomes as shown in Figure 11(d). In this case, the link mechanism 225 remains almost unchanged from the state shown in Figure 11(a).

On the other hand, if the front legs 204 of the input belt conveyor 12 are positioned further back than the normal position as shown in Figure 11(b) and an attempt is made to engage the holding members 170A, 170B, the conveyor body 202 of the input belt conveyor 12 moves forward as shown in Figure 11(e). In this case, due to the action of the link mechanism 225, the tail frame 206 does not shift position (no drag occurs), so the input belt conveyor 12 can be installed without placing undue strain on the tail frame 206, etc.

Furthermore, when the front legs 204 of the input belt conveyor 12 are positioned further forward than the normal position as shown in Figure 11(c), if an attempt is made to engage the holding members 170A, 170B, the conveyor body 202 of the input belt conveyor 12 moves backward as shown in Figure 11(f). In this case, the action of the link mechanism 225 prevents the tail frame 206 from shifting position (no drag occurs), so the input belt conveyor 12 can be installed without placing undue strain on the tail frame 206, etc.

In addition, if the input belt conveyor 12 is not provided with a link mechanism 225, and the tail frame 206 is grounded in a position other than the normal position as shown in Figures 11(b) and 11(c), when the front legs 204 are engaged with the holding members 170A and 170B, the conveyor body 202 cannot move forward or backward as shown in Figures 11(e) and 11(f), and there is a risk that the tail frame 206 will be dragged.

(Regarding the weighing belt conveyor 16)
Returning to Fig. 1 , the weighing belt conveyor 16 has a function of feeding the first base material supplied from the apron feeder 20 onto the feeding belt conveyor 12. Fig. 12(a) shows the weighing belt conveyor 16 as viewed from the +X direction. Fig. 12(b) is a perspective view schematically showing the weighing belt conveyor 16, the weighing belt conveyor 18, and the feeding belt conveyor 12. As shown in Figs. 12(a) and 12(b), the weighing belt conveyor 16 has a conveyor body 302, front legs 304, a tail frame 306, a spherical bearing mechanism 308, and a link mechanism 309.

As shown in Figure 12(a), a head chute 303 is provided at the +Y end of the conveyor body 302 as a guide to guide the first base material transported by the conveyor body 302 to the input belt conveyor 12. The first base material supplied from the apron feeder 20 at the -Y end of the conveyor body 302 is transported in the +Y direction by the conveyor body 302 and supplied from the head chute 303 to the input belt conveyor 12. A sensor is provided in the conveyor body 302 to measure the weight of the first base material, and the input speed (supply speed of the first base material) of the feeder body of the apron feeder 20 described below is controlled according to the weight of the first base material.

Figure 13 shows an enlarged view of the vicinity of the front leg 304. As shown in Figure 13, the front leg 304 has a pair of legs 314A, 314B and a cylindrical member 316 that serves as an axis member connecting the legs 314A, 314B. The cylindrical member 316 engages with the U-grooves 234 of the pillar members 236A, 236B of the support mechanism 226A, thereby connecting the front leg 304 (weighing belt conveyor 16) to the input belt conveyor 12. As shown in Figure 12(b), the front leg 304 is mounted on the bottom surface of the conveyor body 302 via a Z rotation shaft 310. Strictly speaking, the Z rotation shaft 310 rotates in a direction tilted from the Z axis, but for convenience of explanation, it will be described as rotating around the Z axis (θz direction).

Returning to Figure 12(a), the tail frame 306 has a configuration similar to that of the tail frame 206 of the aforementioned input belt conveyor 12. However, the tail frame 306 does not have support mechanisms such as the support mechanisms 226A to 226C provided on the tail frame 206.

The spherical bearing mechanism 308 has a configuration similar to that of the spherical bearing mechanism 224 of the input belt conveyor 12. That is, the spherical bearing mechanism 308 allows for rotational position changes of the conveyor body 302 relative to the tail frame 306 around the X axis (θx), the Y axis (θy), and the Z axis (θz).

The link mechanism 309 has a configuration similar to that of the link mechanism 225 of the input belt conveyor 12. That is, the link mechanism 309 is made of a highly rigid metallic material and functions as a variable mechanism that changes the distance between the spherical bearing mechanism 308 and the front leg 304, and as a translation mechanism that slides the conveyor body 302 in the longitudinal direction. The link mechanism 309 and the spherical bearing mechanism 308 allow the conveyor body 302 to move in the Y-axis direction relative to the tail frame 306.

In this embodiment, with the input belt conveyor 12 installed at the construction site, the weighing belt conveyor 16 is lifted by a crane or the like and installed from above in the position shown in Figure 12(a). Then, as shown in Figure 13, the cylindrical members 316 of the front legs 304 of the weighing belt conveyor 16 are engaged with the U-grooves 234 of the pillar members 236A and 236B of the support mechanism 226A. In this manner, the weighing belt conveyor 16 can be installed while connected to the input belt conveyor 12. Since the weighing belt conveyor 16 has the same configuration as the input belt conveyor 12, as described in Figures 11(a) to 11(f), the tail frame 306 is not dragged when the weighing belt conveyor 16 is installed, thereby preventing undue stress from being placed on each part of the weighing belt conveyor 16.

Here, in the weighing belt conveyor 16, as shown in Figure 21, the front legs 304 have a degree of freedom in the θx direction relative to the support mechanism 226A, and the conveyor body 302 has a degree of freedom in the θz direction relative to the front legs 304. Furthermore, the conveyor body 302 has degrees of freedom in the θx, θy, and θz directions relative to the tail frame 306. This allows the posture of the conveyor body 302 around the Y axis to be determined so as to follow the posture of the support mechanism 226A. Furthermore, even if the top surface of the tail frame 306 is tilted relative to the horizontal plane, the tilt can be absorbed by the spherical bearing mechanism 308. In other words, in this embodiment, the front legs 304 correspond to the second connection part.

In addition, in this embodiment, since the heights of the front legs 304 and the tail frame 306 are approximately the same, the weighing belt conveyor 16 can stand on its own when the engagement between the weighing belt conveyor 16 and the feeding belt conveyor 12 is released. This eliminates the need for auxiliary devices to help the weighing belt conveyor 16 stand on its own when storing the weighing belt conveyor 16, etc.

It is preferable that the head chute 303 of the weighing belt conveyor 16 be able to be lifted up, as in Figure 8(b). This makes installation easier because the head chute 303 does not get in the way when installing the weighing belt conveyor 16.

(Regarding the apron feeder 20)
Returning to Fig. 1, the apron feeder 20 is installed on an iron plate 420 laid on the ground. Fig. 14(a) is a perspective view showing the apron feeder as viewed from the +Y side. The apron feeder 20 comprises a feeder body 502 and a support base 504 that supports the feeder body 502. The feeder body 502 has the function of feeding the first base material onto the weighing belt conveyor 16. Note that the iron plate 420 does not have to be laid.

In this embodiment, when transporting the apron feeder 20, the support base 504 can be folded as shown in Figure 14(b). This makes it easier to transport the apron feeder 20 and also reduces the number of trucks required for transportation.

(Regarding the weighing belt conveyor 18)
Returning to Fig. 1, the weighing belt conveyor 18 has the function of feeding the second base material supplied from the apron feeder 22 onto the feeding belt conveyor 12. Fig. 15 shows the weighing belt conveyor 18 as viewed from the +X direction. Fig. 16 also shows an enlarged view of the vicinity of the front leg 404. As shown in Fig. 15, the weighing belt conveyor 18 has a conveyor body 402, a front leg 404, a tail frame 406, a spherical bearing mechanism 408, and a link mechanism 409, and has the same configuration as the weighing belt conveyor 16 described above.

As shown in Figure 15, a head chute 403 is provided at the +Y side end of the conveyor body 402 as a guide to guide the second base material transported by the conveyor body 402 to the input belt conveyor 12.

As shown in Figure 15, the front leg 404 has a cylindrical member 416 as an axis member. The front leg 404 is attached to the bottom surface of the conveyor body 402 via the Z rotation axis 410, as shown in Figure 12(b).

The tail frame 406, spherical bearing mechanism 408, and link mechanism 409 have the same configuration as the tail frame 306, spherical bearing mechanism 308, and link mechanism 309 of the weighing belt conveyor 16.

In this embodiment, with the input belt conveyor 12 installed at the construction site, the weighing belt conveyor 18 is lifted by a crane or the like and installed from above in the position shown in Figure 15. Then, as shown in Figure 16, the cylindrical members 416 of the front legs 404 of the weighing belt conveyor 18 are engaged with the U-grooves 240 (two locations) of the column members 238A and 238B of the support mechanism 226B. This allows the weighing belt conveyor 18 to be installed while connected to the input belt conveyor 12. Since the weighing belt conveyor 18 has the same configuration as the input belt conveyor 12, as described in Figures 11(a) to 11(f), the tail frame 406 is not dragged when installing the weighing belt conveyor 18, thereby preventing undue stress from being placed on each part of the weighing belt conveyor 18. The weighing belt conveyors 16 and 18 may be installed in any order. That is, the weighing belt conveyor 16 may be installed first, or the weighing belt conveyor 18 may be installed first.

Here, in the weighing belt conveyor 18, as shown in FIG. 21, the front legs 404 have a degree of freedom in the θx direction relative to the support mechanism 226B, and the conveyor body 402 has a degree of freedom in the θz direction relative to the front legs 404. Furthermore, the conveyor body 402 has degrees of freedom in the θx, θy, and θz directions relative to the tail frame 406. This allows the posture of the conveyor body 402 around the Y axis to be determined so as to follow the posture of the support mechanism 226B. Furthermore, even if the top surface of the tail frame 406 is tilted relative to the horizontal plane, the tilt can be absorbed by the spherical bearing mechanism 408. In other words, in this embodiment, the front legs 404 correspond to the second connection part.

In this embodiment, the weighing belt conveyor 16 and the weighing belt conveyor 18 have the same configuration, so if at least one of the weighing belt conveyor 16 and the weighing belt conveyor 18 is provided as a spare machine at the construction site, it can be easily replaced if the weighing belt conveyor 16 breaks down, resulting in excellent maintainability.

Figure 17 is a schematic diagram showing the weighing belt conveyor 16, weighing belt conveyor 18, and input belt conveyor 12 as viewed from the +Z direction. Note that Figure 17 shows a state (hereinafter referred to as the reference state) in which the conveying direction of input belt conveyor 12 coincides with the X-axis direction when viewed from above, and the conveying directions of weighing belt conveyors 16 and 18 coincide with the Y-axis direction when viewed from above. In this reference state, the input range of the first base material from the weighing belt conveyor 16 is included in the receiving range of the first base material by input belt conveyor 12 (the range in which the first base material can be received without spilling). Also, in the reference state, the input range of the second base material from the weighing belt conveyor 18 is included in the receiving range of the second base material by input belt conveyor 12.

In this embodiment, as shown in Figure 17, if the distance between the weighing belt conveyor 16 and the spherical bearing mechanism 224 is D1 and the distance between the weighing belt conveyor 18 and the spherical bearing mechanism 224 is D2, then there is a relationship between D1 and D2: D1 = D2. That is, in this embodiment, distance D1 corresponds to the distance between one side of the second unit and the first position, and distance D2 corresponds to the distance between the other side of the second unit and the first position. The reason for setting D1 = D2 will be explained below.

Figure 18(a) is a schematic diagram showing a case where the installation direction (longitudinal direction) of the conveyor body 202 is tilted with respect to the X-axis when viewed from above when the input belt conveyor 12 is installed. In this case, the conveyor body 202 is tilted based on the spherical bearing mechanism 224, and therefore the amount of deviation between the input range and the receiving range due to the tilt of the conveyor body 202 varies depending on the distance from the spherical bearing mechanism 224. That is, the greater the distance, the greater the deviation, and the smaller the distance, the smaller the deviation. In this embodiment, by matching the distances D1 and D2, the deviation between the input range of the weighing belt conveyor 16 and the receiving range of the input belt conveyor 12 can be matched with the deviation between the input range of the weighing belt conveyor 18 and the receiving range of the input belt conveyor 12. This prevents the deviation of either one from becoming too large, and minimizes both deviations.

Figure 18(b) is a schematic diagram showing a case where the tail frame 206 is tilted when installing the loading belt conveyor 12, and the installation direction (longitudinal direction) of the conveyor bodies 302, 402 of the weighing belt conveyors 16, 18 is tilted with respect to the Y axis when viewed from above. Even in this case, by matching the distances D1 and D2, the amount of deviation between the loading range of the weighing belt conveyor 16 and the receiving range of the loading belt conveyor 12 can be matched with the amount of deviation between the loading range of the weighing belt conveyor 18 and the receiving range of the loading belt conveyor 12. This prevents the amount of deviation on either side from becoming too large, and minimizes both deviations.

Furthermore, impacts during installation of the weighing belt conveyors 16 and 18 may cause a misalignment in their relative position relative to the input belt conveyor 12. Figure 19(a) shows the state in which the weighing belt conveyor 18 is installed first. From this state, if an impact in the +Y direction is applied to the tail frame 206 when installing the weighing belt conveyor 16, the tail frame 206 will rotate in the horizontal plane as shown in Figure 19(b). Almost simultaneously with Figure 19(b), the conveyor body 202 of the input belt conveyor 12 will rotate around the Z rotation axis 210, resulting in the state shown in Figure 20. Even in such a case, by matching the distances D1 and D2, the misalignment between the input range of the weighing belt conveyor 16 and the receiving range of the input belt conveyor 12 can be matched with the misalignment between the input range of the weighing belt conveyor 18 and the receiving range of the input belt conveyor 12. This prevents the misalignment of either one from becoming too large, minimizing both misalignments.

In this way, in this embodiment, by matching the distances D1 and D2, the amount of deviation between the input range and receiving range of the first and second base materials can be minimized, thereby preventing the first and second base materials from spilling.

Note that distances D1 and D2 do not necessarily have to be the same. In other words, the distance between one weighing belt conveyor and the spherical bearing mechanism 224 can be determined based on the distance between the other weighing belt conveyor and the spherical bearing mechanism 224 so that the amount of deviation falls within the allowable range.

(Regarding the apron feeder 22)
1, the apron feeder 22 is installed on an iron plate 422 laid on the ground. The apron feeder 22 has the same configuration as the above-mentioned apron feeder 20. Note that the iron plate 422 does not necessarily have to be laid.

In this embodiment, as described above, each unit (soil mixing device 10, input belt conveyor 12, weighing belt conveyors 16, 18, discharge belt conveyor 14) can be connected, and even if the ground is inclined, the spherical bearing mechanisms 224, 308, 408, 147 can absorb the inclination of the ground. Therefore, there is no need to mark the ground or steel plate when installing each unit. Furthermore, by connecting each belt conveyor and soil mixing device 10, they are less likely to shift positionally, so there is no need to fasten them to the ground or steel plate.

In this embodiment, the front legs 204, 304, 404 of each belt conveyor 12, 16, 18 are pre-installed on the conveyor body 202, 302, 402. Previously, when installing each belt conveyor, the front legs were placed on the ground, and then the conveyor body was brought in from above onto the front legs and connected to the conveyor body. However, this embodiment eliminates this work, reducing the effort required for installation.

As described in detail above, according to this embodiment, the mixing system 100 comprises an earth and sand mixing device 10 (first unit) that crushes and granulates construction waste soil (first process), and an input belt conveyor 12 (second unit) that transports the construction waste soil (second process). The input belt conveyor 12 also comprises a conveyor body 202 that transports the soil, and a tail frame 206 that supports the conveyor body 202. The tail frame 206 is connected to the conveyor body 202 by a spherical bearing mechanism 224 (first connection portion), and the conveyor body 202 is engaged with the earth and sand mixing device 10 by the front legs 204 (second connection portion). A link mechanism 225 with a highly rigid metal portion is provided between the tail frame 206 and the conveyor body 202, allowing the distance between the spherical bearing mechanism 224 and the front legs 204 to be adjusted. 11(a) to 11(f), even if the position of the input belt conveyor 12 is slightly shifted forward or backward (see FIGS. 11(b) and 11(c)) from the correct position (see FIG. 11(a)) when the input belt conveyor 12 is installed, the provision of the link mechanism 225 makes it possible to install the input belt conveyor 12 without dragging the tail frame 206. This allows the input belt conveyor 12 to be easily installed without applying an excessive load to it.

The mixing system 100 of this embodiment also includes an input belt conveyor 12 (first unit) that transports construction waste soil (first process), and a weighing belt conveyor 16 (18) (second unit) that transports base material (second process). The weighing belt conveyor 16 (18) also includes a conveyor body 302 (402) that transports the soil, and a tail frame 306 (406) that supports the conveyor body 302 (402). The tail frame 306 (406) is connected to the conveyor body 302 (402) by a spherical bearing mechanism 308 (408), and the conveyor body 302 (402) is engaged with the input belt conveyor 12 by its front leg 304 (404). Furthermore, a link mechanism 309 (409) having a highly rigid metal part that changes the distance between the spherical bearing mechanism 308 (408) and the front leg 304 (404) is provided between the tail frame 306 (406) and the conveyor main body 302 (402). As described above, in this embodiment, the weighing belt conveyor 16 (18) is also provided with a link mechanism 309 (409), so that the weighing belt conveyor 16 (18) can be installed without dragging the tail frame 306 (406), similar to the input belt conveyor 12. This allows for easy installation without placing an excessive load on the weighing belt conveyor 16 (18).

In addition, in this embodiment, the two weighing belt conveyors 16, 18 are each engaged with the tail frame 206 of the input belt conveyor 12 at their front legs 304, 404, and the distance between one of the weighing belt conveyors 16, 18 and the spherical bearing mechanism 224 is determined based on the distance between the other of the weighing belt conveyors 16, 18 and the spherical bearing mechanism 224. This minimizes the deviation between the input range of each of the weighing belt conveyors 16, 18 and the receiving range of the input belt conveyor 12, even if the input belt conveyor 12 or the weighing belt conveyors 16, 18 are tilted from the reference state (Figure 17).

In addition, in this embodiment, when installing the input belt conveyor 12, the head chute 303 is raised (Figure 8(b)) and transported and installed. This prevents the head chute 303 from getting in the way during transport and installation. Also, as shown in Figures 8(a) to 8(c), when transporting the input belt conveyor 12, the lengths of multiple cables can be made the same, which prevents the input belt conveyor 12 from becoming unstable during transport.

This embodiment also includes a soil mixing device 10 (first unit) and a discharge belt conveyor 14 (second unit) that transports (second process) the crushed and mixed materials discharged from the soil mixing device 10. The rotary bearing mechanism 146 that supports the conveyor body 142 of the discharge belt conveyor 14 includes a shaft member 245 extending in the Y-axis direction and a block member 246 that has a V-groove (or U-groove) formed therein and supports the shaft member 245 in a state that allows it to rotate around the Y-axis. As a result, in this embodiment, if the block member 246 is accurately positioned, the shaft member 245 can be positioned in the X-axis direction, Z-axis direction, θx direction, and θz direction simply by placing it on the block member 246.

In addition, in this embodiment, the block member 246 is fixed to the iron plate 130 on which the soil mixing device 10 is installed, preventing the block member 246 from shifting position. Furthermore, because the block member 246 can be fixed to the iron plate 130 before the discharge belt conveyor 14 is installed, there is no need to reach under the conveyor body 142 to tighten the bolts after the discharge belt conveyor 14 is installed. This simplifies the installation process.

In addition, in this embodiment, the discharge belt conveyor 14 has front legs 144 that support the conveyor body 142. The front legs 144 connect the leg body 145 to the iron plate 130 and are equipped with a spherical bearing mechanism 147 that allows the leg body 145 to tilt relative to the iron plate 130. As a result, in this embodiment, simply by placing the discharge belt conveyor 14 on the iron plate 130, the posture of the discharge belt conveyor 14 can be maintained in an appropriate state relative to the iron plate.

In addition, in this embodiment, the number of degrees of freedom for rotation of the cylindrical member 216 of the loading belt conveyor 12 that engages with the soil mixing device 10 is different from the number of degrees of freedom for rotation of the spherical bearing mechanism 224. This allows the loading belt conveyor 12 to be stably installed while accommodating the inclination of the installation surface when connected to the soil mixing device 10. The same applies to the weighing belt conveyors 16, 18 that engage with the loading belt conveyor 12. Therefore, when the weighing belt conveyors 16, 18 are connected to the loading belt conveyor 12, the weighing belt conveyors 16, 18 can be stably installed while accommodating the shape (inclination, etc.) of the installation surface. Therefore, when installing each belt conveyor 12, 16, 18 at a construction site, it is not necessary to lay steel plates on the ground. Furthermore, markings (inking out) are not required to position each belt conveyor, and since each device is connected, fixtures for fixing each device to the ground are also unnecessary. This reduces or simplifies the work required to install the mixing system 100 at a construction site.

Furthermore, according to this embodiment, the spherical bearing mechanisms 224, 308, 408 located near the ground have more degrees of freedom for rotation than the portions of each belt conveyor 12, 16, 18 that are connected to other devices (cylindrical members 216, 316, 416). This allows each belt conveyor 12, 16, 18 to be stably connected to other devices while reliably accommodating the shape of the ground (such as slope).

Furthermore, according to this embodiment, the cylindrical members 216, 316, 416 engage with other devices at two points (U-grooves 103, 234, 240), and the spherical bearing mechanism 224 abuts the surface on which it is installed at one point. As a result, the cylindrical member 216 connected to other devices engages at two points, ensuring stability when connected.

Furthermore, in this embodiment, when connecting the belt conveyors 12, 16, 18 to other devices, the orientation of the other devices is maintained in a predetermined state, and the spherical bearing mechanisms 224, 308, 408 are grounded to the ground, and the cylindrical members 216, 316, 416 are engaged with the U-grooves 103, 234, 240. This allows the belt conveyors 12, 16, 18 to be installed in an appropriate state in accordance with the orientation of the other devices and the shape of the ground (such as the slope).

In addition, in this embodiment, the belt conveyors 12, 16, and 18 are not fixed with angles or the like, which reduces the time required to remove the mixing system 100 from the construction site. This means that even if the mixing system 100 is removed when it is discovered that a typhoon is approaching, removal of the mixing system 100 can be completed before the typhoon hits.

In the above embodiment, the link mechanism 225 is described as being provided between the spherical bearing mechanism 224 and the conveyor body 202 in the loading belt conveyor 12, but this is not limited to this. For example, the link mechanism may be provided between the conveyor body 202 and the soil mixing device 10 (for example, between the front leg 204 and the conveyor body 202). This also achieves the same effects as the above embodiment (Figures 11(a) to 11(f)). This is not limited to the loading belt conveyor 12, but also applies to the link mechanisms of the weighing belt conveyors 16 and 18.

In the above embodiment, when the head chute 303 of the loading belt conveyor 12 gets in the way during transport or installation, the loading belt conveyor 12 is transported and installed with the head chute 303 in a raised position (changed from the first position to the second position). However, this is not limited to this. If there is a part (specific part) on the loading belt conveyor 12 other than the head chute 303 that gets in the way during transport, the loading belt conveyor 12 may be installed with its position changed so that the specific part does not get in the way. The same applies to the weighing belt conveyors 16 and 18.

In the above embodiment, we have described a case where no iron plates are laid under the belt conveyors 12, 16, and 18, but this is not limited to this and iron plates may also be laid.

While the above embodiment describes the application of the present invention to a mixing system 100, the present invention is not limited to this. For example, the present embodiment may be applied to units (such as soil washing equipment and conveyors) in a soil washing plant, such as that described in Japanese Patent Application Laid-Open No. 2007-175585. The present embodiment may also be applied to units (such as crushers and conveyors) in a plant that crushes concrete or gravel. The present embodiment may also be applied to a sorting plant, such as that described in Japanese Patent Application Laid-Open No. 2006-780. The present embodiment may also be applied to a continuous conveyor for transporting tunnel excavation waste, such as that described in Japanese Patent Application Laid-Open No. 2000-213287. The present embodiment may also be applied to a conveyor installed between offshore and onshore facilities. In this case, it becomes easier to install the conveyor between the facilities, and the conveyor can follow the oscillations of the offshore facility due to tidal changes, waves, etc. Furthermore, this embodiment can also be applied to a discharge conveyor for shaft excavation surplus soil as described in JP 2020-179973 A. This makes it possible to easily add discharge conveyors when it is necessary to increase the number of discharge conveyors according to the site.

The above-described embodiment is a preferred example of the present invention. However, it is not limited to this, and various modifications are possible within the scope of the present invention.

10. Soil mixing device (first unit)
12 Input belt conveyor (second unit or first unit)
14. Discharge belt conveyor (second unit)
16, 18 Weighing belt conveyor (second unit)
113 Chute (entrance)
130 Iron plate (base)
142 Conveyor body (main body)
144 Front leg (second support part)
145 Script body (leg)
147 Spherical bearing mechanism (connection part)
147' V-groove bearing mechanism (support mechanism)
202 Conveyor body (main body, second part)
204 Front leg (second connection part)
206 Tail stand (base, first part)
224 spherical bearing mechanism (first connection part)
225 Link mechanism (variable mechanism)
245 Shaft member (part of first support part)
246 Block member (support member, part of first support part)
302, 402 Conveyor body (main body part)
303 Head chute (specific parts)
306, 406 Tail stand (base)
308, 408 spherical bearing mechanism (first connection portion)
304, 404 Front legs (second connection parts)
309, 409 Link mechanism (variable mechanism)

Claims (13)

a first unit that performs a first process on the object to be processed;
a second unit that performs a second step on the processing object,
the second unit has a main body that performs the second step and a base that supports the main body,
the base portion is connected to the main body portion at a first connection portion, and the main body portion is engaged with the first unit at a second connection portion;
A construction device in which a variable mechanism having a high-rigidity metal part that changes the distance between the first connection part and the second connection part is provided at least either between the base part and the main body part or between the main body part and the first unit. A construction device as described in claim 1, wherein the variable mechanism bears a portion of the load of the main body. The construction device described in claim 1, wherein the first unit and the second unit are stationary and placed in a fixed position. A construction device described in any one of claims 1 to 3, wherein the variable mechanism has a link mechanism that connects the spherical bearing provided in the first connection part to the main body and allows the positional relationship between the spherical bearing and the main body to be changed. two of the second units;
the first unit has a first part that is placed on a ground surface on which the base is placed, and a second part that is connected to the first part in a state in which a change in posture based on a first position of the first part is permitted, and that performs a first process on the processing object;
4. The construction device according to claim 1, wherein each of the two second units is engaged with the first portion of the first unit at the second connection portion, and the distance between one of the second units and the first position is determined based on the distance between the other of the second units and the first position. A construction device as described in claim 5, wherein when the first part of the first unit is placed on the ground surface, the second part is allowed to change its position in a rotational direction within the ground surface, based on the first position. A construction device as described in any one of claims 1 to 3, wherein a specific part used in the second step is provided near the second connection portion of the main body part of the second unit, and a first attitude of the specific part relative to the main body part when performing the second step is different from a second attitude of the specific part relative to the main body part when engaging the second unit with the first unit. a first unit having a processing device that performs a first step on a processing object and a base that supports the processing device;
a second unit including a main body that performs a second step on the processing object and a first support that supports the main body;
The first support portion is a construction device having an axial member extending in a uniaxial direction within a horizontal plane of the base, and a support member supporting the axial member so that it can rotate around the uniaxial direction. A construction device as described in claim 8, wherein the support member is fixed to the base to limit rotation of the main body portion in a horizontal plane. The support member has a V-shaped or U-shaped groove formed therein,
The construction device according to claim 8 , wherein the shaft member is held by the groove of the support member. the second unit has a second support portion that supports the main body portion,
9. The construction device according to claim 8, wherein the second support portion comprises a leg portion extending from the main body portion toward the base, and a connecting portion connecting the leg portion to the base and allowing the leg portion to tilt relative to the base. The construction device described in claim 11, wherein the connecting portion is either a spherical bearing mechanism or a support mechanism having a V-shaped or U-shaped groove and supporting the leg on the base. The processing device has an outlet portion for discharging the object to be processed,
The construction device according to any one of claims 8 to 12, wherein the main body has an inlet surrounding the outlet for introducing the material to be treated.