JPH09192527A - Self-propelled crushing machine - Google Patents

Abstract

PROBLEM TO BE SOLVED: To significantly shorten time for transport and arrangements at site without exceeding a transport limit height even including a hopper by installing the hopper in a freely liftable manner and, at the same time, providing a drive device for lifting the hopper. SOLUTION: The inclined face 7a of a hopper 7 is connected to the frame 15d of a primary crushing part 3 at the time of a crushing operation by expanding a hydraulic cylinder 21. Next, a material to be crushed is received into the primary crushing part 3 from the hopper 7 with the help of a hydraulic shovel or a wheel loader, and is crushed between two crushing rolls 10 for a primary crushing process by rotation of the crushing rolls 10. The height of a crushing machine is decreased by contracting a hydraulic cylinder 21 to lower the hopper 7 when the crushing machine is self-propelled, as shown by a two-dot chain line. Since a device to lift the hopper 7 to a fixed low position is provided on the crushing machine itself, the crushing machine can be transported with the hopper 7 mounted aboard without using a crane.

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 for crushing crushed stone, wood, exfoliated asphalt or concrete blocks or reinforced concrete blocks, as well as dismantled houses, industrial waste, large electric appliances and the like.

[0002]

2. Description of the Related Art A self-propelled crusher for crushing an object to be crushed throws the object to be crushed, which is received from a hopper provided on the upper surface of a vehicle body, into a crushing section composed of a jaw crusher, a crushing roll with a cutter, or the like. The crushing unit has a configuration in which the crushed scraps crushed by the crushing unit are carried out of the vehicle body from a conveyor attached to the lower portion of the vehicle body.

In such a self-propelled crusher, if the size of the crusher is increased in order to increase the processing capacity, or if the crusher is composed of the primary crusher of the upper stage and the secondary crusher of the lower stage, the height of the hopper is increased. Since the total height exceeds the transportation limit height when transporting the crusher by the trailer,
I have no choice but to transport the hopper separately.

[0004]

However, in order to separately transport the hopper, it is necessary to load the hopper onto the trailer with a crane or the like and to assemble the hopper onto the vehicle body using the crane, which requires time and labor for setup. There was a problem that it cost.

In view of the above-mentioned problems, the present invention makes the height including the hopper of the crusher the transportation limit height even when the crusher is enlarged or the crushing unit is configured in two stages. It is a first object of the present invention to provide a self-propelled crusher having a configuration capable of significantly shortening the time required for transportation and on-site set-up without exceeding the requirement of a crane or the like. Further, the present invention provides a self-propelled crusher having a structure in which the crushing unit has a two-stage structure, in which a rock fall prevention plate that prevents rock fall on the magnetic separator and the vehicle body does not interfere with maintenance and inspection of the crushing unit. Is the second purpose.

[0006]

The invention according to claim 1 of the present application achieves the first object, and crushes a hopper and a crushed object received from the hopper in a self-propelled vehicle. In a self-propelled crusher equipped with a crushing device for carrying out crushing waste and a conveyor for transporting crushed scraps to the outside of the vehicle body, the hopper is installed to be movable up and down, and a drive device for moving the hopper up and down is provided. And

According to a second aspect of the present invention, the crushing device is provided with a primary crushing section including a plurality of crushing rolls, and a plurality of crushing pieces installed in the lower part of the primary crushing section for crushing crushed scraps in the primary crushing section. It consists of a secondary crushing part consisting of individual crushing rolls, and the primary crushing part is provided by protruding upward from the vehicle body,
A hopper is provided around the primary crushing section so as to be able to move up and down.

According to a third aspect of the present invention, the lifting device for the hopper comprises a hydraulic cylinder.

A fourth aspect of the present invention is to achieve the second object, and a self-propelled vehicle is provided with a hopper, a crushing device for crushing an object to be crushed introduced from the hopper, and crushed debris. In a self-propelled crusher equipped with a conveyor for transporting to the outside of the vehicle body, the crushing device is composed of a plurality of crushing rolls having a cutter, and a primary crushing portion projecting to the upper surface of the vehicle body, and the primary crushing portion. A secondary crushing unit that is installed in the lower part and is composed of a plurality of crushing rolls having a cutter that crushes the crushed scraps in the primary crushing unit, and a magnetic separator on the conveyor near the primary crushing unit and on the conveyor. A rockfall prevention plate for covering the rockfall prevention plate, and the rockfall prevention plate is mounted so that the primary crushing portion side moves up and down around the opposite side of the primary crushing portion, and a drive device for undulating the rockfall prevention plate is provided. To And butterflies.

[0010]

According to the first aspect of the invention, the hopper is raised during the crushing work so that the original function of the hopper is exerted, the hopper is lowered during the transportation, and the total height when the trailer is mounted is lowered.

In the second aspect of the invention, since the primary crushing section and the secondary crushing section are arranged vertically, the height of the entire crushing section becomes large, but the hopper can be raised and lowered around the primary crushing section. By attaching to, the total height during transportation can be kept within the transportation limit height.

According to the third aspect of the present invention, the hopper lifting device is simply and compactly configured by configuring the lifting device by the hydraulic cylinder.

According to the invention of claim 4, the rockfall prevention plate is provided so as to be up and down freely, and the rockfall prevention plate is pushed up in the vicinity of the hopper during the crushing work to reduce the impact caused by the falling of the rock, and during the maintenance inspection. By lowering the prevention plate, it becomes a space for the inspection table and facilitates the maintenance and inspection of the primary crushing part.

[0014]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS FIGS. 1, 2 and 3 are partially cutaway side views, plan views and rear views showing an embodiment of a self-propelled crusher of the present invention, and FIG. 4 is a part of FIG. It is an expanded sectional view. In this embodiment, an upper stage primary crushing section 3 and a lower stage secondary crushing section 4 are mounted on a vehicle body 1 of a self-propelled vehicle having left and right crawlers 2, and a lower traveling body 2 is provided between the left and right crawlers. A crusher is configured by providing a conveyor 5 for discharging crushed scraps, and a magnetic separator 6 for separating rebar scraps using a magnet is provided at the tip of the conveyor 5. The magnetic separator 6 is composed of a conveyor which is arranged above the conveyor 5 so as to cross it, and a magnet which sucks up and separates the reinforcing bar scraps from the crushed scraps. Reference numeral 7 denotes a hopper for receiving the crushed object, which is installed on the primary crushing unit 3.

The primary and secondary crushing units 3 and 4 are provided with even-numbered crushing rolls 10 and 11, respectively. In this example, the number of secondary crushing rolls 11 is equal to the number of primary crushing rolls. More than 10 units are installed, which increases the processing capacity. In this example, the number of primary crushing rolls 10 is 2, and the number of secondary crushing rolls 11 is 11.
The crushing rolls 10 and 11 are rotated by independent hydraulic motors 12 and 13 for each crushing roll.

As shown in FIGS. 2 and 4, the frame 16 of the primary crushing section 3 is provided so as to project upward from the vehicle body 1, and is formed by a rear frame 16a, a front frame 16b and left and right side frames 16c to form a rectangular shape. It has a cylindrical shape. The crushing roll 10 for primary crushing includes a plurality of cutters 1.
4 is attached to the outer circumference, one end of the crushing roll 10 is coupled to the rotating portion 12a of the hydraulic motor 12 fixed to the rear frame 16a of the frame 16 of the primary crushing portion, and the shaft 1 at the other end is connected.
0a is supported and attached by a bearing 19 attached to the front frame 16b.

The crushing roll 11 for secondary crushing has a structure similar to that of the crushing roll 10 for primary crushing, and is connected by a hydraulic motor 13, and the adjacent crushing roll 11 for secondary crushing is used.
The intervals between the cutters 20 and the cutters 20 are set narrower than the intervals between the adjacent primary crushing rolls 10 and the cutters 14. The interval between the adjacent crushing rolls 11 for secondary crushing is set to be equal to or smaller than the size of the crushed waste discharged from the crusher,
The intervals of the cutters provided on the outer circumferences of the adjacent crushing rolls 11 are also suppressed to the size of the crushed chips or less. As an example, when the crushing roll interval of the primary crushing unit 3 and the cutter interval of the adjacent crushing rolls are 80 mm, these intervals of the secondary crushing unit 4 are set to 40 mm.

As described above, if the hydraulic motors 12 and 13 are independently provided to the crushing rolls 10 and 11, respectively, the crushing rolls 10 and 11 can be installed by installing control valves in the circuits of the hydraulic motors 12 and 13. It is possible to independently control the speed, torque, and rotation direction of 11, and it is possible to perform suitable control according to the material of the crushed object.

In the present embodiment, an inclined plate 16d having the same inclination angle as the inclined surface 7a of the hopper 7 is provided on the upper portion of the frame 16 of the primary crushing unit 3, and the cylindrical plate is formed downward from the outer peripheral portion of the inclined plate 16d. The hopper guide portion 16e is provided, and the inner peripheral portion of the rectangular hopper 7 is fitted so as to be vertically movable along the hopper guide portion 16e. Reference numeral 21 is a hydraulic cylinder for moving the hopper 7 up and down. The hydraulic cylinders 21 are arranged at the four corners of the hopper 7, the lower end of the hydraulic cylinder 7 is connected to a bracket 22 provided on the vehicle body 1 by a pin 23, and the upper end is connected to the hopper 7. Each hydraulic cylinder 21 is attached by being connected to a bracket 24 provided on the.

In FIG. 1 and FIG. 2, 27 is a rock fall prevention plate that covers the vicinity of the primary crushing section 3 of the vehicle body 1 and the magnetic separator 6 on the conveyor 5, and the rock fall prevention plate 27 is opposite to the primary crushing section 3. Side, that is, the bracket 28 provided at the front of the vehicle body 1
With the pin 29 inserted in the center as the center, the primary crushing unit 3 side is vertically mounted so that it can be raised and lowered. Reference numeral 30 denotes a hydraulic cylinder that is provided as a drive device that raises and lowers the rockfall prevention plate 27.
Both ends are attached to the rock fall prevention plate 27 with pins.

In the crushing work, as shown in solid lines in FIGS. 1 and 3 and in FIG. 4, the hydraulic cylinder 21 is extended so that the inclined surface 7a of the hopper 7 has the inclined surface 7a of the frame 1 of the primary crushing section 3.
Continue to 6d. And a hydraulic excavator (not shown)
The object to be crushed is received from the hopper 7 into the primary crushing unit 3 by a wheel loader or the like, and the crushing roll 10 is rotated as shown by the arrow in FIG. 3 to perform primary crushing of the object to be crushed between the two crushing rolls 10. After being broken, in the secondary crushing unit 4, the crushing roll 11 is rotated as shown by the arrow in FIG. 4 to crush the crushed object, thereby further crushing the crushed object.
By performing such two-stage crushing, the crushing can be performed efficiently, and fine crushed scraps can be obtained according to the demand. The crushed waste is discharged through the conveyor 5. When the reinforced concrete block is crushed, the conveyor of the magnetic separator 6 is operated to separate and accumulate the reinforcing steel scraps on the side of the conveyor 5.

At the time of transportation, as shown by the chain double-dashed lines in FIGS. 1, 3, and 4, the hydraulic cylinder 21 is contracted so that the hopper 7 is closed.
By lowering the height of the crusher from H1 to H2
(See FIG. 3). The height H2 shown by the two-dot chain line
Is the height such that when the crusher is mounted on a trailer truck or a transportation truck, the total height of the truck and the crusher in the mounted state is within the transportation limit height. The undercarriage 2 is operated and mounted on the truck by a self-propelled crusher, which is a self-propelled vehicle.

As described above, by providing the crusher itself with a device for raising and lowering the hopper 7 to set it at a low low position,
It can be transported with the hopper 7 attached to the crusher without the need for a crane, eliminating the need for crane preparation, loading the hopper 7 on a truck, and fixing work, and also when starting work on site. Therefore, the preparation of the crane and the unloading work of the hopper 7 are not necessary, and the setup work for transportation or start of work can be performed quickly. Also, hopper 7
Since the hopper 7 is lowered at the crushing position without laterally moving the hopper 7, the hopper 7 can be moved extremely easily and in a short distance. Further, by using the hydraulic cylinder 21 as the lifting drive device, the lifting device is configured simply and compactly.

The rock fall prevention plate 27 is usually used in a state where the hydraulic cylinder 30 is extended and the rock fall prevention plate 27 is raised, so that the drop of the crushed object to the rock fall prevention plate 27 is small and the impact is small. . At the time of maintenance and inspection of the bearing 19 of the primary crushing unit 3, the rock fall prevention plate 27 is lowered as shown by the two-dot chain line in FIG.
Make maintenance and inspection of the primary crushing unit easy.

The present invention is particularly effective in a hopper having a high hopper height in which the crushing section has a two-stage construction as shown in the embodiment, but can be applied to a crushing section having a single-stage crushing section. Also applicable to jaw crusher type crusher.

[0026]

According to the first aspect of the present invention, the hopper for introducing the object to be crushed of the self-propelled crusher is located at a high position during the crushing work, and at a low position where the total height including the hopper falls within the transportation limit height. Since it is installed so that it can be lifted up and down, and equipped with a lifting drive device, it does not require a crane for disassembly and transportation, and the labor for starting work or transportation is reduced, and these setups can be performed. Can be done quickly. Further, since the hopper is configured to be lowered at the crushing position without moving laterally, the hopper can be moved extremely easily and in a short distance.

According to the second aspect, since the primary crushing section and the secondary crushing section are arranged vertically, the height of the entire crushing section becomes large. However, the hopper can be raised and lowered around the primary crushing section. By mounting it, the total height during transportation can be kept within the transportation limit height. In addition, by the two-stage crushing, it is possible to provide a crusher which can efficiently perform crushing, can obtain fine crushed scraps according to requirements, and can be easily transported.

According to the third aspect, since the lifting drive device is a hydraulic cylinder, a simple and compact hopper lifting device is constructed.

According to the present invention, since the rock fall prevention plate is attached so as to be able to rise and fall, by using the rock fall prevention plate in the crushing work in a raised state, the drop of the crushed object to the rock fall prevention plate is small. And the impact is reduced. Also, at the time of maintenance and inspection of the primary crushing part, lowering the rock fall prevention plate provides a space for an inspection stand, which facilitates maintenance and inspection of the primary crushing part.

[Brief description of the drawings]

FIG. 1 is a partially cutaway side view showing an embodiment of a self-propelled crusher of the present invention.

FIG. 2 is a plan view of the present embodiment.

FIG. 3 is a rear view of this embodiment.

FIG. 4 is a partially enlarged view of FIG. 1;

[Explanation of symbols]

1: Car body, 2: Lower traveling body, 3: Primary crushing section, 4: Secondary crushing section, 5: Conveyor, 6: Magnetic separator, 7: Hopper, 7
a: inclined surface, 10, 11: crushing roll, 12, 13: hydraulic motor, 14, 20: cutter, 16: primary crushing part frame, 19: bearing, 21: hopper lifting hydraulic cylinder,
27: Rock fall prevention plate, 30: Hydraulic cylinder for rock fall prevention plate ups and downs

Front page continuation (72) Inventor Tetsuya Yamada 1-44 Namiki, Kawaguchi City, Saitama Nekko Co., Ltd.

Claims (4)

[Claims] 1. A self-propelled vehicle having a hopper, a crushing device for crushing a crushed object received from the hopper, and a conveyor for transporting crushed scraps to the outside of the vehicle body, on the vehicle body of the self-propelled vehicle. In the crusher, a self-propelled crusher, wherein the hopper is installed so as to be able to move up and down, and a drive device for moving the hopper up and down is provided. 2. The cutter according to claim 1, wherein the crushing device is provided with a primary crushing section composed of a plurality of crushing rolls, and a crushing crushed piece installed in a lower portion of the primary crushing section to crush the crushed scraps in the primary crushing section. And a secondary crushing unit composed of a plurality of crushing rolls, the primary crushing unit is provided so as to project upward from the vehicle body, and a hopper is provided around the primary crushing unit so as to be vertically movable. Self-propelled crusher. 3. The self-propelled crusher according to claim 1, wherein the lifting device for the hopper comprises a hydraulic cylinder. 4. A hopper, a crushing device for crushing an object to be crushed received from the hopper, and a conveyor for transferring crushed waste to the outside of the vehicle body, which are mounted on a vehicle body installed on a lower traveling body. In a self-propelled crusher, the crushing device comprises a primary crushing unit which is composed of a plurality of crushing rolls having a cutter and protrudes on the upper surface of the vehicle body, and is installed below the primary crushing unit, and is crushed in the primary crushing unit. It comprises a secondary crushing section consisting of a plurality of crushing rolls for crushing crushed debris, and is provided with a rock fall prevention plate that covers the vicinity of the primary crushing section of the vehicle body and the magnetic separator on the conveyor. Centering on the opposite side of the part, the primary crushing part side can be mounted up and down so that it goes up and down,
A self-propelled crusher, which is provided with a drive device for undulating the rockfall prevention plate.