JP3748840B2 - Roll crusher discharge assist device - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a discharge assist device for a roll crusher that crushes raw materials such as concrete waste. More specifically, the present invention relates to a discharge assist device for a roll crusher that assists the discharge of crushed materials such as concrete waste crushed by a rotor having crushing teeth.
[0002]
[Prior art]
Many industrial wastes represented by asphalt glass and concrete are discharged and become a social problem for road repair and demolition of buildings. In the past, many were disposed of for landfill, but now many are reused from the viewpoint of environmental conservation. In particular, the amount of waste materials such as concrete is large, most of which can be reused, and the reuse is strongly desired. For this crushing, various crusher rotors have been developed and proposed centering on 2-axis or 3-axis rotors. There is also known a crusher that crushes two times, primary and secondary. In order to process the crushed crushed material, there has also been proposed a triangular receiving portion provided at the lower part of the roll shaft.
[0003]
[Problems to be solved by the invention]
The waste materials such as concrete to be crushed by the crusher are not uniform and uniform, such as the size and thickness, the presence or absence of reinforcing bars, etc. It is often difficult to crush all of these concrete waste materials and the like under the same conditions to obtain a crushed material having a desired particle size at a time. This is because even if all the concrete waste is uniformly fed into the crusher, the hardness and shape are different, so it does not become a lump of the desired size, or rebars are entangled between the crusher rotors, etc. This is because the rotor may become unrotatable.
As a method for solving this problem, a configuration has been proposed in which the rotor is widened and the receiving portion described above is provided in the lower portion of the rotor. However, there is a problem that a foreign object such as a reinforcing bar is entangled with the receiving portion. Yes. These foreign objects such as reinforcing bars fall together with the crushed material onto the belt that conveys the crushed material. However, since the conventional crusher is not provided with any device at the lower part of the rotor, foreign matters such as reinforcing bars fall directly on the belt.
[0004]
Since the crushed concrete is crushed relatively fine, there is no problem, but foreign matters such as reinforcing bars fall without being crushed. For this reason, there are many problems such as damage to the belt and obstruction of conveyance by being caught inside the chute. For this reason, there is a demand for a device that does not damage the belt or the like even if the reinforcing bar or the like is dropped, and discharges the long foreign matter or the reinforcing bar or the like while being smoothly regulated in the discharging direction.
The present invention solves such a conventional problem and achieves the following object. An object of the present invention is to provide a discharge assist device for a roll crusher that can discharge smoothly even if there are foreign objects such as reinforcing bars in the crushed material. Another object of the present invention is to provide a discharge assist device for a roll crusher that efficiently discharges crushed material and enhances work efficiency.
[0005]
[Means for Solving the Problems]
In order to achieve the above object, the following measures are taken. That is,
The roll crusher discharge assist device of the first aspect of the present invention includes a crushing chamber, a pair of rotors that are provided in the crushing chamber and have a plurality of crushing teeth on the circumference, and are installed opposite to each other, and a pair of rotors is inserted into the pair of rotors In the roll crusher that crushes the raw material,
A crushed object removing body provided at a lower portion of the meshing position of the pair of rotors to exclude foreign matter of reinforcing bars in the crushed material, and a support provided on a wall portion of the crushing chamber to rotatably support the crushed object removed body. And a rotation driving means that is outside the crushing chamber and forcibly rotates the crushed material exclusion body.
The discharge assist device for a roll crusher according to a second aspect of the present invention is characterized in that, in the first aspect, the crushed object remover is provided with a plurality of convex members on an outer periphery. It is effective for picking up steel bars that fall on the lower part of the roll.
[0006]
The discharge assist device for a roll crusher according to a third aspect of the present invention is characterized in that, in the first aspect of the invention, the crushed material rejecter is provided with a plurality of concave grooves on the outer periphery. It is effective for catching and dropping falling reinforcing bars and the like in the groove.
The discharge assist device for a roll crusher according to a fourth aspect of the present invention is characterized in that, in the first aspect of the invention, the crushed material exclusion body has a polygonal cross section. Reinforcing bars etc. are discharged along with the rotation while being caught by the crushed material exclusion body.
The discharge assist device for a roll crusher according to a fifth aspect of the present invention is characterized in that, in the first aspect of the present invention, a scraping member is provided in the vicinity of the crushed material exclusion body. It is effective to loosen the reinforcing bars that are entangled with the crushed material exclusion body.
The discharge assist device for a roll crusher according to a sixth aspect of the invention is characterized in that, in the first aspect of the invention, the crushed material rejecter rotates in response to the rotational driving force of the roll. It is economical because a dedicated rotary drive device is not required.
[0007]
DETAILED DESCRIPTION OF THE INVENTION
Embodiments of the present invention will be described below with reference to the drawings.
FIG. 1 is a side view of a self-propelled roll crusher 1 to which the present invention is applied. The present invention is not applied only to the self-propelled roll crusher 1, but can be applied to any equipment as long as it is crushing regardless of the stationary type or the self-propelled type. For the understanding of the present invention, the outline of the self-propelled roll crusher 1 will be described although it is not a gist.
A gantry 2 on which a crusher main device is mounted is placed on a crawler 3 capable of traveling. The cradle 2 has a roll crusher 4 related to the configuration of the present invention, a hopper 5 that inputs raw materials such as concrete scraps and takes in the roll crusher 4, a drive device 8 for driving the rotors 6 and 7 of the roll crusher 4, A hydraulic unit for raising and lowering the outrigger, an oil supply device, and a belt conveyor 10 for discharging the crushed crushed material 9 are provided at the bottom of the gantry 2.
[0008]
Further, an operation panel 11 for organically operating these devices is also mounted on the gantry 2. Further, a magnetic separator 12 for removing reinforcing bars discharged and dropped from the roll crusher 4 is also mounted on the belt conveyor 10. The format of this figure is a biaxial self-propelled roll crusher 1. Concrete waste or the like is put into the hopper 5 located at the upper part and fed into the roll crusher 4.
The sent concrete waste material is crushed by the rotation of the rotors 6 and 7 while being sandwiched between the two rotors 6 and 7 having a plurality of crushing teeth 6b and 7b. It is guided to fall. The fallen crushed material 9 is discharged to the outside by the belt conveyor 10. This is the basic configuration associated with crushing.
[0009]
FIG. 2 is a partial plan view showing the roll crusher 4 portion of FIG. In the stationary type, there is no crawler 3 and the gantry 2 is installed directly on the ground or the like via legs or the like, but the configuration related to the roll crusher 4 is the same. The roll crusher 4 has a machine frame 13 that forms a rectangular box that is open at the top and bottom. The lower surface of the machine frame 13 is fixed on the gantry 2 with bolts, welding or the like. A pyramid-shaped hopper 5 is arranged and fixed on the outer periphery of the upper portion of the machine casing 13.
The roll crusher 4 is provided with a first rotor 6 and a second rotor 7. The first rotor 6 is provided with a first rotor drive shaft 6a, and the second rotor 7 is provided with a second rotor drive shaft 7a, which are arranged in parallel to each other. The first rotor 6 and the second rotor 7 have substantially the same structure, but the attachment positions of the crushing teeth 6b and 7b are out of phase with each other in the drive shaft direction and are different from each other. Both ends of the first rotor drive shaft 6a are rotatably supported by the machine frame 13 via bearings.
[0010]
Two sprockets 14 arranged in parallel are fixed to one end of the first rotor drive shaft 6a with a key. Two chains 15 mesh with the two sprockets 14 respectively. Further, the two chains 15 are also engaged with two sprockets 16 that are spaced apart. The two sprockets 16 are fixed to one end of the transmission shaft 17 with a key. An intermediate portion of the transmission shaft 17 is rotatably supported by the support tube 18. The support tube 18 is fixed to the support base 19. The support base 19 is fixed on the gantry 2.
Two sprockets 20 are keyed to the other end of the transmission shaft 17. Two chains 21 mesh with the two sprockets 20 respectively. On the other hand, the two chains 21 mesh with the two sprockets 22 respectively. The two sprockets 22 are fixed to the output shaft of the speed reducer 23 with a key. The speed reducer 23 decelerates the rotational speed of the electric motor 24, and is decelerated by a gear mechanism (not shown).
[0011]
From the above configuration, the first rotor 6 includes the electric motor 24, the speed reducer 23, the output shaft of the speed reducer 23, the sprocket 22, the chain 21, the sprocket 20, the transmission shaft 17, the sprocket 16, the chain 15, the sprocket 14, and the first rotor 6. It is rotationally driven via one rotor drive shaft 6a. Similarly, the drive configuration of the second rotor 7 is substantially the same as that of the first rotor 6. However, the electric motor 25 for the second rotor 7 is arranged in accordance with the rotation axis of the electric motor 24 for the first rotor.
Since the second rotor 7 is provided opposite to the position away from the first rotor 6, the chain is longer than the chain 15 in the case of the 26 first rotor 6. These driving devices are arranged on one side surface of the machine casing 13 constituting the roll crusher 4. A belt conveyor 10 for discharging the crushed material 9 crushed by the roll crusher 4 is disposed at the lower part of the gantry 2. The belt conveyor 10 is fixed to the gantry 2 by a fixing member.
[0012]
Raw materials such as concrete waste materials put into the hopper 5 are crushed by the first rotor 6 and the second rotor 7 and fall as crushed material 9 from the discharge port at the bottom of the gantry 2. The description of the crushing configuration by the rotor is omitted because it is not the gist of the invention. The configuration of the roll crusher 4 to which the present invention is applied is as described above. The discharge assisting device 27 of the present invention is provided at the lower machine casing 13 discharge port at the portion where the crushing teeth 6b, 7b of the two rotors 6, 7 mesh.
Next, the discharge assisting device 27 will be described in detail. FIG. 4 is a partial cross-sectional view in which a discharge assisting device 27 is provided below the meshing position of the two rotors 6 and 7. The discharge assisting device 27 has a configuration in which a crushed object removing body 28 such as a cylindrical body or a shaft body is rotatably provided in the machine frame 13 along the rotor length. Before the crushed material 9 crushed by the crushing teeth 6 b and 7 b of the two rotors 6 and 7 falls on the belt conveyor 10, it falls on the crushed material removing body 28. The crushed material 9 is miscellaneous such as a crushed concrete piece and foreign matter such as a reinforcing bar 9a. The present invention particularly relates to the processing of foreign matter such as the reinforcing bars 9a.
[0013]
FIG. 5 shows the support structure. A crushed object removing body 28 arranged along the width of the machine frame 13 is rotatably supported by a support body 29 provided on the machine frame 13. One end of the crushed material exclusion body 28 protrudes out of the machine frame 13 and can be rotated. In the case of the present embodiment, the sprocket 30 provided at the shaft end of the crushed object removing body 28 is engaged with the driving chain 26 of the second rotor drive shaft 7 a, and this crushed object removing body is rotated with the rotation of the second rotor 7. 28 is also rotated.
In this case, the crushed object exclusion body 28 is forcibly rotated by the rotation of the second rotor 7. As another method for this rotation method, FIG. 6 shows a configuration in which a dedicated motor 31 is attached to the machine casing 13 to directly rotate the crushed object removing body 28. In this case, the rotation of the rotor is not restricted. When a raw material that does not contain the reinforcing bars 9a and the like is expected, or when there are many such cases, the motor 31 is stopped, and the rotation of the crushed object removing body 28 is stopped.
[0014]
Further, as a method for simplifying the configuration, it is possible to use a method in which rotation is not performed normally, but when the reinforcing bars 9a and the like are entangled and discharged together, or when operation is stopped and maintenance is performed, rotation is performed again. As shown in FIG. 7, the configuration in this case may be a case where the handle 32 is hung on the end portion of the crushed material exclusion body 28 and is manually rotated.
Next, a modified example of the crushed object exclusion body 28 will be described. FIG. 8 is a cross-sectional view of an example in which a plurality of protrusions 33 are provided in the circumferential direction on the crushed object exclusion body 28. In this case, it is an effective configuration for catching and scraping the falling rebar 9a. FIG. 5 shows an example in which the protrusions 33 are provided in a zigzag state in the longitudinal direction of the crushed object exclusion body 28. Moreover, although this protrusion 33 is not shown in figure, you may provide what was provided in the spiral shape with the continuous shape along the longitudinal direction of the crushing material exclusion body 28. FIG.
[0015]
FIG. 9 is a cross-sectional view of an example in which a plurality of recessed grooves 34 are provided in the circumferential direction in the crushed object removing body 28. In this case, since the dropped reinforcing bar or the like is hooked in the concave groove 34, it is an effective configuration for eliminating it. The concave groove 34 is provided in a straight line shape or a spiral shape along the longitudinal direction of the crushed material exclusion body 28. FIG. 10 is an example in which the crushed object exclusion body 28 is polygonal, and the figure is a cross-sectional view when the cross-sectional outer shape is a triangle 35. When a polygonal shape such as a triangle is rotated, the reinforcing bars 9a and the like are discharged while being caught by the crushed object exclusion body 28, which is effective.
FIG. 11 is an example in which a scraping member 36 is provided in the vicinity of the crushed object exclusion body 28. This is effective for loosening the reinforcing bars 9a and the like entangled with the crushed object exclusion body 28. The scraping member 36 may be provided on the entire surface along the length of the crushed material exclusion body 28 or may be provided partially. Further, the scraping member 36 may be applied to the crushed object removing body 28 that constitutes a protrusion, a concave groove, a triangle, or the like.
[0016]
As described above, raw materials such as concrete waste are crushed by the two rotors 6 and 7 and fall to the lower portion as the crushed material 9. However, as shown in the drawing, the unbroken steel bars 9a and the like fall together. The reinforcing bars 9a and the like have various forms, and generally have a sharp tip. If there is nothing in the lower part, the tip of this rebar 9a etc. may hit the belt of the belt conveyor 10 directly, and the belt may be broken and severely damaged, requiring a lot of time to repair it. Significantly impedes efficiency.
The discharge assist device is installed to avoid this trouble. Although this discharge assisting device 27 has a buffering effect to prevent the steel bars 9a and the like from dropping directly without rotating, the rotating auxiliary device 27 prevents the clinging around and prevents the reinforcing bars 9a and the like smoothly by rotating. is there. The reinforcing bars 9a and the like that have passed through the discharge assisting device 27 soften the impact of the direct drop and are changed in the dropping direction and fall in an oblique direction along the carry-out direction of the belt conveyor 10 as indicated by arrows in the figure. This eliminates the possibility of damaging the belt. Although the embodiment of the present invention has been described above, the specific configuration of the present invention is not limited to the configuration of the embodiment.
[0017]
【The invention's effect】
As described above, according to the present invention, the discharge assisting device has a buffering effect for preventing the steel bars and the like from directly falling, but the reinforcing bars and the like are not cluttered around by rotating. Reinforcing bars, etc. that have passed through this discharge assist device moderate the impact of the drop and change the direction of the drop. It falls in an oblique direction along the carrying-out direction of the belt that discharges the crushed material. As a result, the belt and the like were not damaged, and the work efficiency associated with crushing could be improved.
[Brief description of the drawings]
FIG. 1 is a side view of a self-propelled roll crusher to which the present invention is applied.
FIG. 2 is a partial plan view of a roll crusher.
FIG. 3 is a side view of FIG. 2;
FIG. 4 is a partial cross-sectional view of a roll crusher to which a discharge assisting device of the present invention is attached.
FIG. 5 is a partial cross-sectional view schematically showing a support structure of the discharge assist device in a developed view.
FIG. 6 is a partial cross-sectional view schematically showing a configuration in which a crushed object exclusion body is rotated by a dedicated motor.
FIG. 7 is a partial cross-sectional view schematically showing a configuration in which a crushed object exclusion body is rotated by a handle.
FIG. 8 is a cross-sectional view of a crushed object removing body provided with a plurality of protrusions on the circumference.
FIG. 9 is a cross-sectional view of a crushed object remover provided with a plurality of concave grooves on the circumference.
FIG. 10 is a cross-sectional view of a crushed object exclusion body having a triangular cross-sectional shape.
FIG. 11 is a cross-sectional view showing a configuration in which a scraping member is provided in the vicinity of the crushed object exclusion body.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 ... Self-propelled roll crusher 2 ... Base 3 ... Crawler 4 ... Roll crusher 5 ... Hopper 6, 7 ... Rotor 8 ... Drive device 9 ... Crushed material 9a ... Rebar 10 ... Belt conveyor 13 ... Machine frame 27 ... Discharge auxiliary device 28 ... Crushed object exclusion body

Claims (6)

In a crushing chamber, a pair of rotors provided in the crushing chamber and having a plurality of crushing teeth on the circumference and installed facing each other, and a roll crusher for crushing the raw material charged into the pair of rotors from a hopper,
A crushed object remover that is provided at a lower part of the meshing position of the pair of rotors and excludes foreign matter of reinforcing bars in the crushed object;
A support provided on the wall of the crushing chamber and rotatably supporting the crushed material exclusion body;
A roll crusher discharge assisting device comprising: a rotary drive unit that is outside the crushing chamber and forcibly rotates the crushed material rejecter. The discharge assist device for a roll crusher according to claim 1,
The crushing material exclusion body is provided with a plurality of convex members on the outer periphery, and a roll crusher discharge assisting device. The discharge assist device for a roll crusher according to claim 1,
The crushed object removing body is provided with a discharge assist device for a roll crusher, wherein a plurality of concave grooves are provided on an outer periphery. The discharge assist device for a roll crusher according to claim 1,
The roll crusher discharge assisting device, wherein the crushed object excluding body has a polygonal cross section. The discharge assist device for a roll crusher according to claim 1,
A roll crusher discharge assisting device characterized in that a scraping member is provided in the vicinity of the crushed material exclusion body. The discharge assist device for a roll crusher according to claim 1,
The roll crusher discharge assisting device according to claim 1, wherein the crushed object removing body rotates in response to a rotational driving force of the rotor.

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