JP2002095991A - Conveyor for mobile recycled product manufacturing machine - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a conveyor for a mobile recycled products manufacturing machine of which the productivity is improved by preventing the recycled products such as crushed materials from being jammed into the machine. SOLUTION: On the lower position of the discharging end part of a discharge conveyor 6 of a mobile crusher 1 which discharges crushed materials (products or semi-finished products) as recycled products crushed by a crusher 3, a cover 21 is provided to prevent the discharging lower end part of the discharge conveyor 6 from bring into contact with the crushed materials to be discharged.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a self-propelled crusher equipped with a crushing device for crushing crushed raw materials, and a self-propelled soil improver provided with a mixing device for adding a soil improving material to soil and crushing and mixing. The present invention relates to a conveyor device for a self-propelled recycle product production machine provided in a self-propelled recycle product production machine.

[0002]

2. Description of the Related Art Self-propelled crushers are various types of large and small rocks, construction wastes, industrial wastes, etc. generated at construction sites such as concrete lumps discharged during building demolition and asphalt lumps discharged during road repair. (= Material to be crushed) is used as a recycled material. For example, the recycled material (material to be crushed), which is put into a hopper as a receiving means above the self-propelled crusher by a hydraulic shovel or the like, is placed, for example, below the hopper. The crusher is guided to a crushing device as a processing device by the provided feeder, and crushed to a predetermined size by the crushing device. The crushed material falls from a space below the crushing device onto a discharge conveyor below the crushing device, and is conveyed by the discharge conveyor. During this conveyance, a magnetic separator arranged above the discharge conveyor adsorbs and removes, for example, rebar pieces mixed in the concrete lump, and finally as a crushed product (product or semi-finished product) for recycling. It is discharged outside the self-propelled crusher.

A self-propelled soil improvement machine is not suitable for backfilling of excavated soil (so-called construction soil) generated in, for example, burial work of gas pipes, water and sewage works, and other road works and foundation works. The recycle raw material (improvement target soil), which is put into a sediment hopper as a receiving means on the upper part of a self-propelled soil improvement machine by a hydraulic shovel or the like, for example, is provided below the sediment hopper by a hydraulic shovel or the like. The conveyer guides the mixture to a mixing device as a processing device. The mixing device performs a crushing and mixing process together with the soil improving material, and the mixture is dropped onto a discharge conveyor (conveying conveyor). (Product or semi-finished product) is finally discharged outside the self-propelled soil improvement machine.

As described above, in a self-propelled recycle product production machine, recycle products (crushed product, earth and sand product) are stacked below the discharge side end of the discharge conveyor as the production work progresses. At this time, the discharge conveyor usually includes a frame, a transport belt wound around a drive wheel and a driven wheel (idler) supported by the frame and driven by a hydraulic motor for the discharge conveyor, and a transfer belt. A supporting roller for supporting a conveying surface of the belt, and a guide roller for guiding the conveying belt from the side, and circulatingly driving the conveying belt (a feed belt portion moving in the conveying direction; And a moving return belt portion) to convey the recycled product. During the transport operation of the discharge conveyor, as described above, the recycled product having an increased loading height approaches or contacts the lower portion or the side portion of the discharge conveyor, moves on the return belt as it is, and moves the guide roller and the support. It may bite into rollers and the like.

To cope with such an abnormal situation, the discharge conveyor is stopped in Japanese Patent Application Laid-Open No. 7-18538.
As described in Japanese Patent Publication No. 7 (1999), provided in a self-propelled crusher that crushes a crushed material received by a hopper by a crusher and discharges the crushed material by a discharge conveyor, detects a load pressure of a hydraulic motor for a discharge conveyor. A drive control device for a self-propelled crusher that includes a pressure switch and a relay circuit that stops a discharge conveyor, a crusher, and a feeder according to the pressure switch has been proposed.

[0006]

The above-mentioned prior art drive control device for a self-propelled crusher uses a pressure switch to detect an overload state of the hydraulic motor for the discharge conveyor due to, for example, biting of the crushed material into the discharge conveyor. In this case, by stopping the discharge conveyor, it is possible to prevent each part of the discharge conveyor from being damaged.

[0007] However, the following problems exist in the above prior art. That is, when the overload state is detected by the pressure switch, it is after the crushed material has already been caught, and therefore, even if the discharge conveyor is stopped here, the work of removing the caught material must be performed manually. . This removal operation involves manually removing crushed materials that have been bitten by guide rollers and support rollers of the discharge conveyor one by one, and requires a great deal of time and labor. Therefore, it takes a long time to return to the crushing operation, and the operation efficiency is reduced, so that it is difficult to improve the productivity.

In order to prevent this, the operator must always pay attention to the loading height of the crushed material in order to prevent the above-mentioned recycled product from being caught in the discharge conveyor. The mental burden on the person increases, and the efficiency (work efficiency) also decreases.

It is an object of the present invention to provide a conveyor device for a self-propelled recycle product production machine capable of improving productivity by preventing a recycle product such as a crushed product from being caught in advance.

[0010]

Means for Solving the Problems (1) In order to achieve the above object, the present invention relates to a conveyor device for a self-propelled recycle product production machine which discharges recycled materials processed by a processing device as recycle products. A protection member is provided below the discharge end of the conveyor device.

[0011] Recycled products discharged by the discharge conveyor fall from the discharge side end of the discharge conveyor, for example, to the ground and are loaded. Although the loading height increases as the processing operation progresses, in the present invention, the protection member prevents the contact between the lower part of the lower side of the discharge side of the discharge conveyor and the recycled product discharged from the discharge conveyor. Thereby, the recycled product can be prevented from being caught in the discharge conveyor.

Therefore, unlike the conventional structure in which an overload state is detected due to biting of a recycled product into a discharge conveyor or the like, production work is not interrupted due to biting, and productivity can be improved.

(2) In the above (1), preferably,
The protection member is provided rotatably with respect to the conveyor device.

Thus, the lower portion of the discharge conveyor can be exposed to the outside by rotating the protection member with respect to the discharge conveyor. Therefore, it is not necessary to completely remove the protective member from the discharge conveyor even when the recycled product comes into contact with the end of the discharge conveyor for some reason and clogging occurs, or when performing periodic inspections, etc., making maintenance work easy and quick. It can be carried out.

[0015]

DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of the present invention will be described below with reference to the drawings. FIG. 1 is a side view showing an entire structure of a self-propelled crusher to which an embodiment of a conveyor device for a self-propelled recycle product production machine of the present invention is applied, and FIG. 2 is a side view showing the self-propelled crusher shown in FIG. It is a top view of a traveling crusher.

In FIGS. 1 and 2, the self-propelled crusher 1 uses a working tool such as a bucket of a hydraulic shovel to crush materials (eg, construction waste material,
Household appliances, plastic waste materials, old tires, etc., hereinafter referred to as construction waste materials, etc.) are input, and the hopper 2 that receives the construction waste materials, and the construction waste materials received by the hopper 2 are crushed to a predetermined size, and then crushed downward. A crusher main body 4 on which a crushing device (a biaxial shredder in this example) 3 for discharging is mounted, a traveling body 5 provided below the crusher main body 4, and crushed by the crushing device 3 and discharged downward. And a discharge conveyor 6 for receiving the crushed material (product or semi-finished product) as a recycled product, transporting the crushed material to the front side (the left side in FIGS. 1 and 2) of the self-propelled crusher 1, and carrying out.

The traveling body 5 includes a main body frame 7 and left and right crawler tracks 8 as traveling means.
The main body frame 7 is formed of, for example, a substantially rectangular frame, and has a crusher mounting portion 7A on which the crushing device 3, the hopper 2, and a power unit 19 (described later) are mounted.
The crusher mounting portion 7A and the left and right crawler track 8 described above.
And a track frame section 7B for connecting The crawler track 8 includes a drive wheel 9a and an idler 9b.
And the driving force is applied by left and right traveling hydraulic motors 10L and 10R (only the left traveling hydraulic motor 10L is shown in FIG. 1) provided on the driving wheel 9a side. Thereby, the self-propelled crusher 1 is caused to travel.

The crushing device 3 is, as shown in FIG.
The hopper 2 is mounted on an end portion on the front side in the longitudinal direction (left side in FIG. 1) of the crusher attachment portion 7A, and the hopper 2 is disposed further above the crusher 3.

The crushing device 3 is a biaxial shearing machine (so-called shredder), and as shown in FIG.
a) a cutter 3b is attached at a predetermined interval in a comb-tooth shape through a
The two rotating shafts (not shown) are arranged so as to be substantially parallel to each other and to be engaged with the cutter 3b alternately. By rotating the rotating shafts in opposite directions, the construction waste material supplied from the hopper 2 is bitten between the cutters 3b and 3b, sheared into strips, and crushed to a predetermined size. It has become. At this time, the driving force to the rotating shaft is applied to the crushing device in the driving device housing portion 11 provided on the rear side of the crushing device 3 on the crushing device mounting portion 7A (that is, in the longitudinal middle portion of the crushing device mounting portion 7A). Hydraulic motor 12
Given by

The discharge conveyor 6 has a discharge side (the front side of the crusher, the left side in FIGS. 1 and 2) at a front end of the crusher mounting portion 7A (see FIG. 1) via a support member (not shown). (The left end). The portion opposite to the discharge side (the rear side of the self-propelled crusher, the right side in FIGS. 1 and 2) is located below the crusher mounting portion 7A, and is crushed via a support member (not shown). It is supported so as to be hung from the lower part of the machine mounting part 7A. This discharge conveyor 6
Is the conveyor frame 13 and the conveyor frame 1
3, a driving roller 14 (see FIG. 2) and a driven roller (not shown) provided at both ends, a conveyor belt 15 wound and provided between the driving roller 14 and the driven roller, and the conveyor frame 13 A support roller 16a provided at a predetermined pitch interval to support the conveyor belt 15, and a guide roller 16b for guiding the conveyor belt 15 from the side
And The drive roller 14 is connected to a discharge conveyor hydraulic motor 17, and the driving force of the discharge conveyor hydraulic motor 17 is applied to a rotating shaft 14a (see FIG. 2).
, And drives the transport belt 15 to circulate. That is, the feed surface 15 that moves in the upper transport direction
a and a return surface 15b that moves in a direction opposite to the lower transport direction. This allows the crushing device 3 to move the conveyor belt 1
The crushed material (product or semi-finished product) as a recycled product that has fallen onto 5 (feed surface 15a) is transported and discharged.

A power unit 19 is mounted on the upper portion of the rear end (right side in FIGS. 1 and 2) of the crusher mounting portion 7A via a power unit loading member 18 (see FIG. 1). .

The power unit 19 includes the left and right traveling hydraulic motors 10L and 10R, the crusher crusher hydraulic motor 12, and the discharge conveyor hydraulic motor 1.
7, a hydraulic pump (not shown) for discharging hydraulic oil to a hydraulic actuator, an engine (not shown) as a prime mover for driving the hydraulic pump, and the hydraulic motors 10L, 10R, 12 from the hydraulic pump. , 17 are provided with a control valve device (not shown) having a plurality of control valves (not shown) for controlling the flow of the pressure oil supplied to each of them.

The front side of the power unit 19 (FIG. 1)
2 is provided with a driver's seat 20 on which an operator rides. The operator stands in the driver's seat 20 to monitor the crushing state of the crushing device 3 to some extent during the crushing operation. Is available.

In the self-propelled crusher having the basic configuration as described above, the most significant feature of the present embodiment is that a cover 21 is provided on the discharge conveyor 6. FIG. 3 is an enlarged side view showing a detailed structure of one embodiment of the conveyor device for a self-propelled recycle product production machine of the present invention, and FIG.
It is a cross-sectional view by an IV cross section.

3 and 4, as described above, the cover 21 is provided at the discharge side (left side in FIG. 3) of the discharge conveyor 6 so as to cover below the return surface 15b of the conveyor belt 15. As shown by a two-dot chain line in FIG. 3, as the crushing operation progresses, the load height of the crushed material increases from A to B to C and comes into contact with the return surface 15b of the conveyor belt 15. To prevent it.

The cover 21 is a member formed in a substantially gutter shape, is slightly wider than the conveyor frame 13 (see FIG. 4), and has a mounting portion 21a which covers the lower portion of the conveyor frame 13 from the side. , Bolts 22 and nuts 23 (see FIG. 4)
3 attached.

As shown in FIG. 3, the conveyor belt 13 is connected to the conveyor frame 13 via support members 24 and 25 provided near the front (left side in FIG. 3) end of the self-propelled crusher. A scraper 26 made of an elastic material, such as rubber, is provided so that the leading end of the scraper 26 is in sliding contact with the return surface 15b. The crushed material attached to the return surface 15b is scraped off almost directly below the leading end position of the scraper 26. It has become. Therefore, there is a possibility that the crushed material scraped off by the scraper 26 enters the bottom surface 21b of the cover 21 and accumulates. However, the end of the bottom surface 21b of the cover 21 on the front side (left side in FIG. 3) of the self-propelled crusher. Section (scraper 26
(Substantially right below) is provided with a guide portion 21c, which guides the scraped crushed material forward (left side in FIG. 3) of the self-propelled crusher, and the crushed material enters the bottom surface 21b and accumulates. It is designed to prevent that.

The upper end of the cover 21 on the front side (left side in FIG. 3) of the self-propelled crusher is moved by a pin 27 (see FIG. 4) to the front side of the conveyor frame 13 (left side in FIG. 3). The bolt 21 and the nut 23 are detachably attached to the ends, and the cover 21 is turned around the pin 27 as a fulcrum in a direction indicated by an arrow in FIG. 3, for example, to a position indicated by a two-dot chain line in FIG. 3. The return surface 15
b can be exposed.

In this example, as shown in FIG. 3, when the conveyor frame 13 and the cover 21 are attached to each other, one place by the pin 27 and three places by the bolt 22 and the nut 23 are used.
A total of four places (in fact the opposite side has the same structure,
(Total 8 places), but the structure where the bolts are tightened is not limited to three places. If the cover 21 can be securely attached to the conveyor frame 13, for example, one place, two places, or four or more places I do not care. Further, the bolted portion may have a structure in which it is attached by, for example, a clamp, a hook, or the like.

Here, in the above, the self-propelled crusher 1 constitutes the self-propelled recycle product producing machine described in the claims, the crushing device (two-axis shredder) 3 constitutes a processing device, The cover 21 forms a protection member.

Next, the operation and operation of the self-propelled crusher of this embodiment will be described. In the self-propelled crusher 1 having the above configuration, during crushing work, the hopper 2 is
When the construction waste material or the like to be crushed is put into the hopper 2, the construction waste material or the like received by the hopper 2 is guided to the crushing device 3, and is finely sheared and crushed to a predetermined size by the crushing device 3. The crushed crushed material falls from the space below the crushing device 3 onto the discharge conveyor 6 and is conveyed, is almost uniform in size, and finally falls from the discharge side end of the discharge conveyor 6 to, for example, the ground. And loaded.

As the crushing operation is performed, the crushed material forms a mountain below the discharge side (the left side in FIG. 1) end of the discharge conveyor 6, and the crushing operation (ie, the crushed material production operation) progresses. In addition, the height of this mountain is A as shown by a two-dot chain line in FIG.
→ B → C, and it becomes higher. As described above, the transport belt 15 of the discharge conveyor 6 includes a feed belt 15a that moves in the transport direction and a return belt 15b that moves in the opposite direction to the transport direction.
Exists, and the pile of the crushed material having the increased loading height approaches or contacts the lower portion or the side portion of the return belt 15b. At this time, the crushed material in contact with the return belt 15b is wound around the return belt 15b,
It may move on the back surface (the upper surface in FIG. 1) as it is, and may be caught by the guide roller 16 b of the discharge conveyor 6, the support roller 16 a, or a driven roller (not shown), and the discharge conveyor 6 may be damaged.

In this embodiment, the return surface 1 of the conveyor belt 15 of the discharge conveyor 6 is covered by the cover 21.
By covering the end of the discharge side (left side in FIG. 1) of 5b, the lower part of the discharge side of the discharge conveyor 6 is prevented from coming into contact with the crushed material (product or semi-finished product) discharged from the discharge conveyor 6 as a recycled product. I do. This prevents the crushed material from being wound up on the return surface 15b of the conveyor belt 15 and biting into the guide roller 16b of the discharge conveyor 6, the support roller 16a, or a driven roller (not shown), and the discharge conveyor 6 is prevented from being damaged. it can.

Therefore, unlike the conventional structure for detecting an overload state due to, for example, biting of the crushed material into the discharge conveyor 6,
The interruption of the production operation due to the crushed material being caught in the discharge conveyor 6 is eliminated, the operation efficiency is improved with a simple structure, and the productivity can be improved.

Further, the cover 21 is rotatably attached to the conveyor frame 13 by the pins 27, so that the cover 21 is rotated with respect to the discharge conveyor 6, and the return surface 15b of the conveyor belt 15 is exposed to the outside. Can be done. Therefore, even if crushed materials come into contact with the discharge side (left side in FIG. 1) end of the discharge conveyor 6 due to some factor and clogging occurs, or when performing a periodic inspection, the cover 21 is removed from the discharge conveyor 6 (in detail). Does not need to be completely removed from the conveyor frame 13 and maintenance work can be performed easily and quickly.

Another embodiment of the present invention will be described with reference to FIG. FIG. 5 is an enlarged side view showing the detailed structure of another embodiment of the conveyor device for a self-propelled recycle product production machine of the present invention. The external configuration of the self-propelled recycle product production machine (self-propelled crusher) according to the present embodiment is the same as that of the self-propelled crusher shown in FIGS. The description will be made with reference to FIGS. 1 to 4 as needed.

In FIG. 5, in the present embodiment, a flat plate 28 is provided in place of the cover 21 of the previous embodiment. This plate 28 is used for the discharge conveyor 6.
The front end (left end in FIG. 5) of the supporting member is provided near the discharge side (left side in FIG. 5) end of the conveyor frame 13 of the discharge conveyor 6 by a pin 29. 24 is provided rotatably. The rear end (the right end in FIG. 5) of the plate 28 is supported by being suspended below the conveyor frame 13 via a support member 30 such as a wire which is detachably provided by a hook or the like. That is, at the discharge side end (the left end in FIG. 5) of the discharge conveyor 6, the lower part of the return surface 15b of the conveyor belt 15 is covered by the plate 28, and the side is open.

In this embodiment, the plate 28 constitutes a protection member described in each claim.

Also in the present embodiment, the cover 21 covers the lower side of the discharge side of the discharge conveyor 6 with the discharge conveyor 6.
Contact with crushed material (product or semi-finished product) as recycled product discharged from Therefore, the crushed material is rolled up on the return surface 15b of the conveyor belt 15, and the guide rollers 16b of the discharge conveyor 6 and the support rollers 16a,
Alternatively, it is possible to prevent the discharge conveyor 6 from being broken by a driven roller (not shown) or the like, thereby preventing the production operation from being interrupted by the crushed material being caught in the discharge conveyor 6 and improving the productivity.

Further, unlike the cover 21 in the above-described embodiment, the plate 28 is not covered below the scraper 26, and the crushed material scraped off by the scraper 26 does not enter the plate 28 and accumulate. Therefore, there is no need to provide a structure like the guide portion 21c in the cover 21, and the structure can be further simplified.

The wire 30 is detachable, and the plate 28 is connected to the conveyor frame 1 with the pin 29 as a fulcrum.
3, the maintenance work can be performed easily and quickly as in the above embodiment. Further, since the side of the return surface 15b of the conveyor belt 15 is always open, simple inspection and maintenance work can be performed without removing the wire 30.

In the above two embodiments, the self-propelled crusher 1 (a so-called front-in / front-out self-propelled crusher) in which the discharge conveyor 6 is provided on the front side has been described as an example. The present invention is not limited to this, and the structure for preventing the discharge from being caught in the self-propelled recycle product production machine of the present invention can be applied to various self-propelled recycle product production machines without departing from the technical idea thereof.

For example, the same effect can be obtained by applying the present invention to a so-called front-in / out-out type self-propelled recycle product production machine provided with a discharge conveyor on the rear side. Also, a self-propelled crusher having a two-axis shearing machine as the crushing device has been described as an example, but the present invention is not limited to this, and can be applied to a self-propelled crushing machine having a shearing machine having a larger number of shafts. Needless to say.

Further, in the above description, an example has been described in which the present invention is applied to a self-propelled crushing machine having only the discharge conveyor 6 as an auxiliary machine for performing work related to crushing work by the crushing device. And a feeder provided with a feeder for transporting construction waste materials and the like received in the hopper 2 to the crushing device 3 in accordance with the above, and a magnetic substance contained in the crushed material provided above the discharge conveyor 6 and being transported on the discharge conveyor 6. May be applied to those provided with a magnetic separator that magnetically attracts and removes.

In the above, the present invention relates to a self-propelled crusher comprising a crusher 3 having a cutter on a shaft arranged in parallel as a crushing device and shearing construction waste material or the like by rotating them in opposite directions. However, the present invention is not limited to this, and other crushing devices, for example, a pair of roll-shaped rotating bodies having a crushing blade attached thereto are rotated in the opposite directions to each other, and the rotating bodies are rotated. A rotary crusher (such as a 6-axis crusher including a so-called roll crusher) that crushes rocks and construction waste material between them, and rocks and constructions by rocking moving teeth with respect to fixed teeth. A crushing device (so-called jaw crusher) that crushes waste materials, etc., and a striking plate equipped with a plurality of blades are rotated at high speed. Waste materials Self-propelled crusher equipped with a crushing device (so-called impact crusher) that crushes suddenly, and a wood crushing device that puts wood such as wood, branch wood, construction waste wood, etc. into a rotor with a cutter to turn it into small pieces It is also applicable to machines.

Further, the present invention is not limited to a self-propelled crusher.
A self-propelled soil improvement machine that produces improved soil as a recycled product (product or semi-finished product) using construction soil generated at the construction site as an object to be improved (recycled raw material), and other devices with a discharge mechanism such as a discharge conveyor It goes without saying that the present invention can be applied to a self-propelled recycled product production machine.

[0047]

According to the first aspect of the present invention, the protection member prevents contact between the lower portion of the discharge side of the discharge conveyor and the recycled product discharged from the discharge conveyor, and the recycled product bites the discharge conveyor. Can be prevented from entering. Therefore, there is no interruption of the production operation due to the biting, and the productivity can be improved.

According to the second aspect of the present invention, since the protection member rotates with respect to the discharge conveyor and a space can be created between the lower portion of the discharge conveyor and the protection member, the protection member is completely removed from the discharge conveyor. Without this, maintenance work on the discharge side end of the discharge conveyor can be performed easily and quickly.

[Brief description of the drawings]

FIG. 1 is a side view showing an entire structure of a self-propelled crusher to which an embodiment of a conveyor device for a self-propelled recycle product production machine of the present invention is applied.

FIG. 2 is a top view showing the overall structure of a self-propelled crusher to which one embodiment of the conveyor device for a self-propelled recycle product production machine of the present invention is applied.

FIG. 3 is an enlarged side view showing the detailed structure of one embodiment of the conveyor device for a self-propelled recycle product production machine of the present invention.

FIG. 4 is a cross-sectional view taken along the line IV-IV in FIG. 3;

FIG. 5 is an enlarged side view showing a detailed structure of another embodiment of the conveyor device for a self-propelled recycle product production machine of the present invention.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 Self-propelled crusher (self-propelled recycle product production machine) 2 Hopper 3 Crushing device (processing device) 8 Left and right crawler tracks 21 Cover (protection member) 28 Plate (protection member)

 ──────────────────────────────────────────────────の Continuing on the front page (72) Inventor Masamichi Tanaka 650, Kandamachi, Tsuchiura-shi, Ibaraki Prefecture Inside the Tsuchiura Plant of Hitachi Construction Machinery Co., Ltd. F term in Tsuchiura factory (reference) 4D067 CG07 DD04 DD14 EE04 GA02 GA03 GA16 GA18 GB03

Claims (2)

[Claims] 1. A conveyor device for a self-propelled recycle product producing machine for discharging recycled materials processed by a processing device as a recycle product, wherein a protection member is provided below the discharge end of the conveyor device. Conveyor equipment for self-propelled recycled product production machines. 2. The self-propelled recycling device according to claim 1, wherein said protection member is provided rotatably with respect to said conveyor device. Equipment for product production machines.