JP2003013467A - Equipment for vertical conveyance of earth - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide equipment for vertical conveyance of earth which can surely realize upward conveyance and takeout with respect to every sort of soil and which has a high conveying efficiency and facilitates extension of a vertical conveyance part, regarding the equipment for vertical conveyance of earth used for conveying the earth upward in the fields of civil engineering and construction. SOLUTION: The equipment comprises a chain conveyor for conveyance of earth which moves around an earth charging part, the vertical conveyance part and an earth takeout part, and a longitudinal casing which surrounds the vertical conveyance part of the conveyor. The chain conveyor comprises a large number of connected conveyor chains and plate lifters fixed at prescribed intervals on the chains. Each plate lifter is composed of a back plate fixed to the chain corresponding thereto, along the longitudinal direction, and a partition plate projecting forward from about the rear end side of the back plate. The earth is held in the space sectioned by the back plate and the partition plate of the plate lifter of each conveyor chain and by lateral side plates on the opposite sides and a front plate of the casing and conveyed upward through the longitudinal casing.

Description

Detailed Description of the Invention

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an earth and sand vertical conveying device for conveying earth and sand upward in the field of civil engineering and construction.

[0002]

2. Description of the Related Art A vertical earth-and-sand conveying device is a machine for vertically conveying a large amount of earth-and-sand generated during civil engineering and construction work. For example, a large amount of excavated soil is generated in the deep underground at construction sites of underground foundation construction, underground passages, and subway lines, so it is necessary to temporarily lift it to the ground in order to discharge or treat it.

For this reason, conventionally, a dedicated conveyor for hoisting has been used. Conventional conveyors include, for example, a bucket system, in which a large number of buckets are fixed at regular intervals on a chain that vertically circulates in a vertical casing, and the sand is sequentially loaded into the upward buckets. Then, the chain was pulled up and discharged on the ground by tilting the bucket in the lateral direction.

Another example is a case plate conveyor system in which plates or pans are mounted substantially horizontally between a pair of chains that move up and down in a pipe-shaped vertical casing and circulate, and each pan is placed at the bottom. A device has been known in which earth and sand are sequentially placed on the top, then the pan is pulled up, the pan is inclined at the upper part, and the pan is discharged.

Further, another example is a vertical belt conveyor system, in which the carry-out belt has a large number of connected containers separated by fins on the left and right sides and partition fins in the front-rear direction between them, and at least the rising portion is It is equipped with a sealing belt that covers the container opening in parallel with the carry-out belt, and the traverse of the carry-out belt charges each container with earth and sand.
At the rising part, the opening is moved upward while being covered with a sealing belt, and at the upper part, the sealing belt is removed to discharge the earth and sand from the opening.

[0006]

All of the above conveyors are devised for vertically lifting earth and sand, but the above-mentioned bucket method is such that earth and sand remain in the bucket after discharging, In viscous soils, there is a large amount of residue, which reduces efficiency.In addition, in the casing, gravel protruding from the bucket may be caught or dropped on the casing and damage the casing and basket.
Also, this method can only be used for vertical landing, and not for tilted casings.

The above case plate conveyor system is generally difficult to use for sand containing stones and gravel, even if it is a viscous clay, because the sand easily falls from the bread due to the touch of the bread and the inclination of the bread. In addition, large stones and gravel were likely to be caught in the pipe casing and damage the bread and casing.

Further, the conventional vertical belt conveyor system is
Since a large number of fin-formed containers are placed in succession on the belt conveyor made of rubber, the sediment inside the container falls when the transition from the traverse portion to the rising portion, and the sediment accumulates at the bent portion of the conveyor. Growing up, this reduced transport and was inefficient. On the other hand, since the sealing belt presses down the earth and sand in the container, the earth and sand are pressed and solidified in the container, and it is difficult to completely discharge from the container, which also causes a reduction in the amount of discharge. Also. For large stones or gravel, if the ceiling of the sealing belt is incomplete and earth and sand fall out from the gap, or if the pressing force of the rubber on the conveyor is insufficient, the stone or gravel will fall.

In view of the above problems, the present invention is capable of reliably ascending and discharging all types of soil such as cohesive soil, sandy soil, and gravel soil when hoisting earth and sand, and achieves high vertical transport efficiency. It is intended to provide a device. The present invention particularly provides a vertical earth and sand transporting device suitable for carrying out excavation degree in a narrow shaft. The present invention is
In particular, the present invention provides a vertical earth-sand transporting device in which the transporting portion can be easily extended upward in order to be easily applied to the upside-down construction method.

[0010]

The vertical earth-sand transporting device of the present invention comprises a plate lifter fixed on each chain of a chain conveyor in an upper carrying part, and raised in a vertical casing surrounding the plate lifter, This is to raise the earth and sand held in each plate lifter.

That is, the apparatus of the present invention includes a chain conveyor for transporting earth and sand which goes around the earth and sand feeding section, the upper conveying section and the earth and sand discharging section, and a vertical casing which surrounds the periphery of the conveyor, and the plate described above. The lifter is composed of a back plate fixed to each chain along the longitudinal direction and a partition plate projecting substantially vertically from the rear end side of the back plate, and the conveyor plate of each conveyor chain in the vertical casing in the upper conveying section. The earth and sand are held in a space divided by the back plate and the partition plate of the plate lifter and conveyed upward.

In such an apparatus, the above-mentioned earth and sand feeding section is
A sprocket wheel supporting the lower end of the conveyor arranged vertically and a charging hopper for charging earth and sand to the plate lifter above the sprocket wheel can be adopted, and this structure has a vertical vertical casing. Since it can be attached to the side opening, it does not take a special place for installing the hopper, and it has the advantage of being compact.

The above-mentioned earth and sand carrying-out portion is provided with a sprocket wheel for supporting and driving the conveyor upper end with at least the conveyor side conveyor surface of the conveyor in a substantially horizontal direction, and a earth and sand conveyer provided just below the conveyor upper end for receiving the earth and sand. It can be configured with an exit.

[0014]

BEST MODE FOR CARRYING OUT THE INVENTION The apparatus of the present invention is provided with guide rails for supporting and guiding the rollers of a chain conveyor along the earth and sand feeding portion, the upper conveying portion, and the earth and sand discharging portion, and the chain is provided between the upper and lower sprocket wheels. The conveyor is guided by guide rails and circulates. The above casing preferably surrounds the plate lifter of the chain conveyor inside, and is preferably attached to the guide rail,
This makes it possible to narrow the gap between the peripheral edge of the partition plate and the inner surface of the casing.

In this structure, in the upper conveyance section, the plate conveyor is included, and the ascending and descending chain conveyors are surrounded by casings, and the ascending and descending casings are provided by the guide rails of the chain conveyor. Since the guide rails are fixed so that the space between the guide rails on both sides is not covered, the guide rails can be erected from the mountain structure by being fixed by an appropriate supporting member. In this structure of the present invention, the height of the vertical transport unit can be easily increased from several meters to hundreds of tens of meters by adding guide rails, casings, and chain conveyors. In the upper transport section, the chain conveyor is
The chain conveyor may be arranged not only vertically but also at an angle, and the chain conveyor may be appropriately combined with the vertical position and the inclined position. When inclining the chain conveyor, it is preferable that the plate conveyor on the ascending side is on the upper side and the chain conveyor is on the lower side. In the following embodiments, in the upper conveyance section, a chain conveyor and a casing surrounding the chain conveyor are shown to be vertically erected or supported, and hereinafter, such a vertically arranged upper conveyance is shown. The unit will be specifically referred to as a vertical transport unit.

It is preferable that the above-mentioned earth and sand feeding section has a lower sprocket wheel for supporting the lower end of the conveyor arranged vertically and an input hopper for feeding earth and sand to a plate lifter above the sprocket wheel. . The hopper has an opening on the side of the vertical casing.
It includes a diagonal side plate that faces obliquely downward from above.

An upper sprocket wheel, in which the above-mentioned earth and sand carrying-out portion drives the conveyor by supporting at least the conveyor side conveyor surface of the conveyor in a substantially lateral direction and supporting the upper end of the conveyor.
It is preferable that the bottom of the sprocket wheel is provided directly below the upper end of the conveyor, and that it comprises a sediment carrying-out port for carrying out sediment.

[0018]

1 and 5 show an outline of a vertical sediment transporting apparatus 1 according to an embodiment of the present invention.
Is composed of a conveyor main body 30 and a casing 2. In the conveyor main body 30, the chain conveyor 3 has a lower sprocket wheel 51 and an upper sprocket wheel 56.
The sprocket wheel 51, which is erected in a circulatory manner, and has the lower end of the sprocket wheel 51 at the lower end, and the vertical transfer unit 1b which moves up and down are erected substantially vertically, and the upper sprocket wheel 56 is installed. The upper part of the earth and sand carrying-out part 1c, which is the other end, is arranged obliquely upward. A motor M for rotationally driving the upper sprocket wheel 56 is arranged, and the rotation of the upper sprocket wheel 56 causes the chain conveyor 3 to move around. As will be described later, a plate lifter 4 for carrying earth and sand to the conveyor chains 31a and 31b at fixed intervals is attached to the chain conveyor 3.

In this example, the casing 2 is divided into a sediment loading portion 1a, a vertical transport portion 1b, and a sediment transporting portion 1c. In the earth and sand input part 1a, a chain conveyor 3 that turns from descending to ascending around the lower sprocket wheel is surrounded, and an inlet 12 for introducing earth and sand into the plate lifter 4 is provided on the ascending side so as to open obliquely upward. is there.

The casing 2 of the vertical transport unit 1b is arranged so as to surround both sides of the plate lifter 4 attached to the chain conveyor 3 and the three side surfaces 220, 221, 221 on the front side in a non-contact manner. In this example, the vertical transport unit 1b
The casing 2 is fixed to the ascending side chain conveyor 3 and the descending side chain conveyor 3 separately.

The casing 2 of the sediment carrying-out section 1c surrounds the sediment carrying-out section 1c of the chain conveyor 3, and is provided with a sediment carrying-out port 13 directly below the upper sprocket wheel 56 where the chain conveyor 3 is folded back. A motor M for driving the sprocket wheel 56 to rotate is disposed above the sprocket wheel 56.

2 and 3 show a part of the chain conveyor 3 and the plate lifter 4 in the carrying apparatus 1 of this embodiment, the chain conveyor 3 comprises a pair of conveyor chains 31a and 31b. Link plate 3
1a is rotatably linked to the other pair of link plates 31b. The shaft holes are provided at both ends of the link plate 31a, and the pin shaft 33 is inserted together with the shaft holes of the other pair of link plates 31a, and the pin plates 33 are connected by the adjacent link plates to form a chain conveyor. A roller 32 is mounted on each pin shaft 33 between each pair of link plates 31a and 31b, and is rotatably supported to form a roller chain. The roller 32 guides the entire chain conveyor 3 along the guide rail 25 while rolling on the rail guide.

A pair of left and right chains 31a are arranged on the chain conveyor 3 so as to move synchronously, and a fixed number of chains 31a are provided.
The plate lifter 4 is fixed for each, but each plate lifter 4 has a corresponding link plate 31 of the chain.
The rear plate 41 is fixed to a along its longitudinal direction, and the partition plate 42 projects forward from the rear end of the rear plate 41.

To fix the plate lifter 4 to the chain conveyor 3, each link plate 31a of the left and right chains is fixed.
Is attached to the attachment 420 by means of mounting plates 421 and 422 attached to the back surface of the back plate 41 of the plate lifter 4 and is fixed to the attachment 420 by tightening bolts 43 in this example. Each of the link plates 31a connected to the unit plate lifter 4 has a plurality of pin shafts 33 inserted into the holes at both ends via rollers 32, and is alternately connected to the link plates 31b to which no lifter is connected. It is an endless caterpillar conveyor in which 4 are connected at regular intervals.

In the plate lifter 4 shown in this example, the back plate 41 and the partition plate 42 are formed by bending a single steel plate at a substantially right angle, and the back plate 41 and the partition plate 42 support the earth and sand for transportation. Is secured. further,
In this example, a diagonal member 46 provided on the left and right sides of the front side of the back plate 41 and the front side of the partition plate 42 is joined and reinforced. Further, on the lower surface on the front side of the rear plate 41 of the plate lifter 4, a protruding piece 44 adjacent to the lower surface on the rear end side of the rear plate 41 of the front plate lifter 4 is fixed (welded in this example. The front and rear back plates are made to have a narrow gap to minimize the fall from the gap.

The chain conveyor 3 circulates between the upper and lower sprocket wheels 56, 51. Between the sprocket wheels 56, 51, a guide rail 25 for supporting and guiding the chain conveyor 3 serves as the earth and sand loading portion 1a. It is arranged along the vertical transport unit 1b and the earth and sand unloading unit 1c. A corresponding pair of guide rails 25 is arranged for the pair of chain conveyors 3, and the rollers 32 provided between the conveyor chains 31a and 31b are guided while rolling in the grooves 251 of the guide rails 25. And move. In this example, the guide rails 25 are arranged substantially vertically from the earth and sand loading portion 1a to the vertical conveyance portion 1b, and the earth and sand unloading portion 1c is oriented in a lateral direction with a gentle curve.

A grooved steel material or an H-shaped steel material is used as the guide rail 25, and a roller provided on the inner surface of the recessed groove 251 of the steel material between the conveyor chains 31a and 31b rolls so that the track of the chain conveyor 3 is moved. Can be decided In the illustrated example, an H-shaped steel material is used for the guide rail 25.

The casing 2 in the vertical transfer section 1b is
As shown in FIG. 3, a front plate 220, side plates 221 on both sides, and a back plate 223 provided with a bending notch on the back side from the side plate 221 are formed in a substantially vertical tubular shape having a rectangular cross section. It is formed in a tubular shape with the back side cut open. The vertical transport unit 1b of the casing 2 is the back plate 2 of the casing 2.
23 is the vertical front part 25 of the H-shaped steel of the guide rail 25.
It is welded and fixed to 2 and arranged vertically along the guide rail 25.

As described above, each plate lifter 4 mounted on the chain conveyor 3 moves up and down inside the earth and sand feeding portion 1a and the vertical conveying portion 1b in the casing 2, and the earth and sand moves through the partition plate 42 of each plate lifter 4. As a bottom surface, a back plate 41 of the plate lifter 4 and both side plates 221 of the casing 2,
221 and the front plate 220 in a space having four sides as a side wall,
The earth and sand can be stored and can be raised by raising the plate lifters 4.

Regarding the positional relationship between each plate lifter 4 mounted on the chain conveyor 3 and the casing 2, the plate lifter 4 is guided by the guide rails 25, and the casing 2 in the vertical transport section 1b is guided by the guide rails 2.
Since the positioning is performed as described above via the 5, the gap between the partition plate 41 of the plate lifter 4 and the inner surface of the casing 2 can be set to be extremely narrow. In this example, a gap A between the front part of the plate lifter 4 and the front plate of the casing 2,
The gap B between the side edge of the plate lifter 4 and both side plates of the casing 2 and the gap C between the inner surface of the back plate 223 are both set to 30 mm, preferably 5 to 15 mm. If these gaps are 5 mm or less, the plate lifter 4 may come into contact with the casing due to long-term use, and if it exceeds 15 mm, the frequency of falling of sand or gravel increases.

By making such narrow gaps A, B and C, the sprocket wheel 5 at the earth and sand input portion 1a is
Even if earth and sand are thrown into each plate lifter 4 at a position immediately above 1, the earth and sand are dropped from the gaps A, B, and C between the plate lifter 4 and the casing 2 while the vertical transport unit 1b is being raised, It is possible to prevent biting of gravel in the gap as much as possible.

FIG. 4 shows the details of the earth and sand feeding section 1a. The lower end side of the chain conveyor 3 hangs down continuously from the vertical conveying section 1b, and the folded back portion is supported by the lower sprocket wheel 51. There is. In this example, the sprocket wheel 51 is provided with a take-up fixed to an appropriate external structure to press the lower sprocket wheel 51 downward to maintain the tension of the chain conveyor 3. As a mechanism for this, the take-up comprises a machine body 6 and a pair of support members 62 extending downward from the machine body 6, a pair of support members 62 fitted on the body members 62, sliding vertically, and pivotally supporting a shaft 52 of the sprocket wheel 51. Bearing 53, and an adjusting screw member 61 that is threadedly penetrated through the machine body 6 and has its tip abutted against the bearing 53 for positioning. By adjusting the rotation of the adjusting screw member 61, the bearing 53 is moved back and forth (that is, up and down) with respect to the machine body 6. Therefore, the adjustment screw member 61 can move the lower sprocket wheel 51 up and down to hold the lower end of the chain conveyor 3 and adjust its tension.

The above-mentioned earth and sand feeding section 1a is provided with a sprocket wheel 51 for supporting the lower end of the vertically arranged conveyor.
And a charging hopper 211 for charging the plate lifter 4 with earth and sand above the sprocket wheel.

At the position directly above the lower sprocket wheel 51 in the earth and sand input part 1a, the chain conveyor 3 on the ascending side goes around the sprocket wheel and the plate lifter 4 ascends toward the vertical conveying part 1b. In this state, since the partition plate 42 of the ascending-side chain conveyor 3 is a substantially horizontal bottom plate, if earth and sand are put into the chain conveyor 3 from the hopper 211, the earth and sand put into the partition plate 42 of each plate lifter 4 will be removed. If a part of the earth and sand is received while cutting, and further rises and moves to the vertical transport unit 1b, the earth and sand are placed in a space surrounded by the casing 2 around the plate lifter 4 and divided by the lifter 4. It is raised sequentially while holding it.

As another form of the earth and sand feeding section 1a, a special horizontal conveyor section is provided for charging, and a hopper is arranged on the horizontal conveyor section, and the earth and sand on the hopper is placed on the plate lifter of the horizontal conveyor section. It can also be thrown in.
However, as mentioned above, the lower sprocket wheel 5
1 is a position directly above the vertical vertical casing 2, and an opening is provided at the lower end side of the vertical vertical casing 2, and an upwardly widening hopper that spreads upward is attached to the opening. Hopper 2
There is an advantage that the installation of 11 does not take a special place and can be made compact.

The other earth and sand carrying-out section 1c is arranged such that at least the conveyor side conveyor surface of the chain conveyor 3 is oriented substantially in the lateral direction, the upper end of the conveyor is supported by the upper sprocket wheel 56, and the chain conveyor 3 is orbitally driven. An earth and sand carry-out port is provided just below the upper end of the conveyor to discharge the earth and sand.

In FIGS. 1 and 5, the upper sprocket wheel 56 on the upper end side of the conveyor drives the orbit of the chain conveyor by engaging the sprockets of the sprocket wheel 56 and the rollers 32 of the respective chain conveyors 3. The sprocket wheel is rotatably supported by a rotary shaft, and the drive motor M is attached to one end of the rotary shaft.
A separate sprocket wheel 57 that engages a drive wheel chain 58 that rotates with the rotating shaft of is fixed.

In the earth and sand carrying-out section 1c, the chain conveyor 3 is accommodated and fixed in the horizontal casing 23.
The horizontal casing 23 is joined to the upper end of the vertical casing 2 below one end thereof, and the other end side of the horizontal casing 2 covers and closes the upper end of the chain conveyor, and the discharge port 13 is provided on the lower side thereof. To form an opening.

The discharge port 13 is formed on the upper end side of the chain conveyor, directly below the sprocket wheel 56 on the upper side, by forming an opening in the casing 2. The discharge port 13 is allowed to pass through and is dropped. The plate lifter 4 that moves the earth and sand carrying-out portion 1c to the upper sprocket wheel 56 side has a posture in which the rear plate 41 serves as a bottom plate to support the earth and sand, and the partition plate 42 behind the rear plate 41 stands above. When the conveyor 3 turns around the sprocket wheel 56 on the upper side and turns over, the back plate 41 of the plate lifter 4 turns over from the upper surface to the lower surface, and the earth and sand on the back plate 41 can be reliably dropped.

[0040]

According to the conveyor of the present invention, a chain conveyor is fixed on a conveyor chain at regular intervals and fixed to corresponding chains along the longitudinal direction, and a rear plate of the rear plate. A plate lifter composed of a partition plate protruding forward from the vertical lift casing 2 and a vertical casing 2 surrounding the plate lifter. Inside the vertical casing 2, the rear plate and the partition plate of the plate lifter of each conveyor chain, and the casing 2 Since the earth and sand were held in the space divided by the side plates and the front plate on both sides of and conveyed upward, the gap between the peripheral edge of the partition plate and the inner surface of the casing was made as small as possible, and With the simple structure of the conveyor, it is possible to efficiently convey the earth and sand over a long upper conveying portion while preventing the falling of the container.

In particular, the guide rail 25 for supporting and guiding the rollers of the chain conveyor is arranged along the earth and sand feeding portion, the upper conveying portion, and the earth and sand discharging portion, and the casing 2 surrounds the plate lifter inside. By being attached to the guide rail 25 and regulating the gap between the partition plate and the inner surface of the casing 2, it becomes easy to adjust the gap, and it is possible to prevent the earth and sand from falling through the gap during the conveyance. The efficiency can be increased.

The above-mentioned earth and sand feeding section may have a structure in which a lower sprocket wheel that supports the lower end of the conveyor that is vertically arranged and a feeding hopper that feeds earth and sand to the plate lifter are provided above the sprocket wheel. If so, the earth and sand input part can be easily constructed. Such a hopper has a structure in which an opening on the side surface of the vertical casing includes an oblique side plate that is directed obliquely downward from above, so that the earth and sand input portion can be simplified.

Further, the earth and sand carrying-out section has an upper sprocket wheel which drives at least the conveyor side conveyor surface of the conveyor in a lateral direction to support and drive the upper end of the conveyor, and below the sprocket wheel, directly below the upper end of the conveyor. If it is configured with a sediment discharge port for discharging sediment, it is easy to discharge the sediment transported by the conveyor and the structure of the plate lifter is simple, so it is possible to recover the soil almost completely from the plate lifter. You can

[Brief description of drawings]

FIG. 1 is a schematic perspective view of a chain conveyor in a vertical earth-sand transporter according to an embodiment of the present invention.

FIG. 2 is a horizontal cross-sectional view of a vertical transport unit of the earth and sand vertical transport device according to the embodiment of the present invention.

FIG. 3 is a vertical cross-sectional view of a vertical conveyance unit of the earth and sand vertical conveyance device according to the embodiment of the present invention.

FIG. 4 is a vertical cross-sectional view of a sediment loading section of a vertical sediment transporting apparatus according to an embodiment of the present invention.

FIG. 5 is a side view showing the external appearance of the vertical earth-sand carrier device according to the embodiment of the present invention.

[Explanation of symbols]

1 Vertical sediment transporter 1a Sediment input section 1b Vertical transport section 1c Sediment carry-out section 12 Sediment input port 13 Sediment carrying port 2 casing 25 guide rails 3 chain conveyor 31a link plate 33 pin shaft 32 roller 4 plate lifter 41 back plate 42 Partition board 51 Lower sprocket wheel 56 Upper sprocket wheel

Claims (5)

[Claims] 1. A chain conveyor comprising: a sediment-conveying chain conveyor that circulates a sediment feeding section, an upper conveying section, and a sediment discharging section; and a vertical casing that surrounds at least the upper conveying section of the conveyor. It is composed of a number of conveyor chains connected to each other and plate lifters fixed on the chains at regular intervals. Each plate lifter has a back plate fixed to the corresponding chain along the longitudinal direction, and a rear end side of the back plate. And a partition plate that protrudes forward from the front, and holds the earth and sand in a space defined by the back plate of the plate lifter of each conveyor chain, the partition plate, the side plates on both sides of the casing, and the front plate in the vertical casing. Vertically transporting earth and sand. 2. A guide rail for supporting and guiding rollers of a chain conveyor is arranged along the earth and sand feeding section, the upper conveying section, and the earth and sand unloading section, and the casing surrounds the plate lifter at least in the upper conveying section. do it,
The device according to claim 2, which is fixed to a guide rail and regulates a gap between the partition plate and the inner surface of the casing. 3. The earth-and-sand charging section has a lower sprocket wheel that supports a lower end of a conveyor arranged substantially vertically, and a charging hopper that charges earth and sand to a plate lifter above the sprocket wheel. Item 1
The device according to. 4. The apparatus according to claim 3, wherein the hopper includes an oblique side plate that faces obliquely downward from above in an opening of a side surface of the vertical casing. 5. The above-mentioned earth and sand carrying-out portion is located below the upper end of the sprocket wheel and below the upper end of the sprocket wheel, the upper sprocket wheel supporting the upper end of the conveyor with at least the transfer-side conveyor surface of the conveyor in a substantially horizontal direction. 5. A sediment carrying-out port provided to carry out earth and sand.
The device according to any of the above.