JP2002079135A - Self-traveling crusher - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a self-traveling crusher in which a work machine and a travel gear are reliably stopped when the clearance adjustment of a crushing machine is performed. SOLUTION: This self-traveling crusher is provided with a work machine such as a crushing machine for crushing a material to be crushed and a feeder for feeding the material to be crushed; and a travel gear for allowing the crusher to freely travel. There are further provided: a mode selection means for selecting any optional operation mode from a work mode for performing crushing work with the work machine, a travel mode for allowing the crusher to travel with the travel gear and an adjustment mode for performing the clearance adjustment of a crushing section of the crushing machine; and a controller with which, when the adjustment mode is selected by the mode selection means, both the work mode and the travel mode operations are made inoperable.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

[0001] The present invention relates to a self-propelled crushing machine.

[0002]

2. Description of the Related Art At a demolition site or a crushed stone site, crushed materials such as construction waste materials and crushed stones are reduced in volume to improve transport efficiency, and work efficiency is improved by production of products at the site and production of recycled products. Self-propelled crushing machines are used to improve the cost and reduce costs. FIG. 5 shows a side view of an example of the self-propelled crushing machine. The self-propelled crushing machine 1 includes a feeder 2,
It has a crusher 3, a discharge conveyor 4, a traveling device 5, and a power source 6. The material to be crushed introduced into the hopper 7 by an unillustrated excavator or the like is conveyed to the crusher 3 by the feeder 2, crushed by the crusher 3, dropped downward, and discharged by the discharge conveyor 4. A feeder 2, a crusher 3, a discharge conveyor 4, and a traveling device 5 by a power source 6 such as an engine.
Is driven and travels between sites by the traveling device 5.

FIG. 6 is a side view of a crusher 3 which is a main device of the self-propelled crushing machine 1 described above. The crusher 3 crushes the object to be crushed between the fixed receiving teeth 10 and the oscillating moving teeth 11. The upper part of the moving tooth 11 is a wheel 1 driven by a crusher motor 12 via a belt 13.
4 is rotatably mounted at a position eccentric from the rotation center axis. When the wheel 14 rotates, the pivot point of the moving tooth 11 by the wheel 14 makes a circular motion, so that the vicinity of the exit of the moving tooth 11 also makes a circular motion, and the size of the exit gap G changes.
As a result, the object to be crushed sandwiched between the receiving teeth 10 and the moving teeth 11 near the exit gap G is crushed, but the receiving teeth 10 and the moving teeth 11 are severely worn near the exit gap G. For this reason, the worker regularly adjusts the outlet gap G to a predetermined value in order to always keep the size of the crushed object substantially constant.

The adjustment of the outlet gap G is performed by first setting the wheel 1
The moving tooth 11 is positioned at a position where the exit gap G is adjusted by aligning the mark M1 attached to No. 4 with the mark M2 attached to the stationary wheel cover 15. Next, the bolt 22 for fixing the toggle block 17 to the cylinder seat 16 is removed, and the toggle block 17 is separated from the cylinder seat 16. The toggle block 17 is responsible for the crush reaction force of the moving tooth 11 via the toggle plate 20. The cylinder seat 16 is attached to a stationary rear frame 18 of the crusher 3. Next, the cylinder 19 attached to the cylinder seat 16 is extended, and the back of the moving tooth 11 is pushed through the toggle block 17 and the toggle plate 20 to set the gap G increased by wear to a predetermined size. Do it again. Since a gap is formed at the shim 21 between the toggle block 17 and the cylinder seat 16, a new shim 21 is added to fill the gap, and the toggle block 1
7 is fixed to the cylinder seat 16 with bolts 22. The gap adjusting operation using the gap adjusting mechanism such as the toggle block 17, the cylinder 19, the toggle plate 20, and the shim 21 is performed when the working machines such as the feeder 2, the crusher 3 and the discharge conveyor 4 are operating, or Work is possible even when running.

[0005]

The self-propelled crushing machine described above has the following problems. The clearance adjustment work is usually performed by stopping all the working machines 2, 3, and 4 and
Is not activated, but the work equipment 2,
3, 4 or the traveling device 5 may suddenly start operating.
In such a case, since the crusher moves during the gap adjustment of the crusher, the outlet gap G cannot be set as a predetermined value, and the particle size distribution of the crushed material cannot be kept constant. In addition, there is a possibility that the gap adjusting mechanism may be damaged, and it may take time to repair the crusher 3 of the main device, and the work efficiency may be reduced.

An object of the present invention is to provide a self-propelled crushing machine in which a working machine and a traveling device are reliably stopped when adjusting the clearance of the crushing machine.

[0007]

In order to achieve the above object, a first aspect of the present invention provides a crusher for crushing a crushed object and a working machine such as a feeder for supplying the crushed object to the crusher. In a self-propelled crushing machine having a traveling device that allows traveling, a work mode in which crushing work is performed by the working machine, and a traveling mode in which traveling is performed by the traveling device,
A mode selection unit for selecting an adjustment mode for adjusting a clearance of the crushing unit of the crusher; and when the adjustment mode is selected by the mode selection unit, the operation in the work mode and the traveling mode is invalidated. It has a configuration having a controller.

According to the first aspect, when the adjustment mode is selected by the mode selection means including the work mode, the travel mode, and the adjustment mode, the operation by the work operation means and the operation by the travel operation means are invalidated. That is, in the adjustment mode, even if the operator operates the work implement operation switch for operating the work implement or the traveling lever for traveling, the work implement or the traveling device does not operate. Accordingly, when adjusting the gap of the crusher, the work implement and the traveling device are reliably stopped, so that the outlet gap G can be reliably set to a predetermined value, and the gap adjusting mechanism is not damaged during the gap adjustment. Therefore, since it is not necessary to repair the crusher of the main device for a long time, the working efficiency is not reduced and the desired product accuracy can be obtained.

According to a second aspect based on the first aspect, a jog operating means for jogging the crusher is provided, and when the adjustment mode is selected by the mode selecting means, the controller operates the jog operating means. It is configured to enable.

According to the second aspect, in the adjustment mode,
When the worker outputs the jogging command from the jogging operation means, the controller outputs the jogging command to the solenoid valve that drives the crusher. This allows the crushing section of the crusher to be positioned at a predetermined reference position during the gap adjustment work, so that it is possible to easily determine whether or not the exit gap at this reference position is a predetermined value, and to easily set the exit gap to a predetermined value. Can be adjusted.

According to a third aspect based on the first aspect, when the selection mode is switched from the work mode to the travel mode or the adjustment mode, the controller causes the operating work machine to move to the upstream side of the conveying path of the crushed material. Are sequentially stopped from the work machine located at

According to the third invention, when the operation mode is switched from the operation mode to the traveling mode or the adjustment mode, the operating operation machines are sequentially stopped from the operation machine located on the upstream side of the crushed object conveying path. That is, the most upstream feeder in the transport path of the crushed object is first stopped, and then the crusher and the discharge conveyor are automatically stopped in this order. Accordingly, the crushing machine or the discharge conveyor does not become clogged with the material to be crushed, and the operation can be smoothly shifted to the next step.

[0013]

Embodiments of the present invention will be described below with reference to the drawings. In the following figures, the same elements as those described with reference to FIGS. FIG. 1 shows a first operation of the self-propelled crushing machine 1.
FIG. 3 shows a place where an operation panel 30 and a second operation panel 31 operated when adjusting a gap are arranged. The first operation panel 30 is disposed in the vicinity of the power source 6 toward the front, and the second operation panel 31 is disposed in the vicinity of the crusher 3 at a position where the operator can easily operate during the gap adjustment work. Have been.

FIG. 2 is a control block diagram of the present embodiment, and the configuration will be described with reference to FIG. First, the configuration of the first and second operation panels 30 and 31 will be described. The first operation panel 30 includes a crusher switch 32, a feeder switch 33, and a discharge conveyor switch 34 as operation operation means, and left and right traveling levers 35, 3 as traveling operation means.
6 is provided. Further, a mode selection dial 37 is provided as mode selection means. Crusher switch 3
2, feeder switch 33 and discharge conveyor switch 3
Reference numeral 4 includes an ON button for operating the crusher 3, the feeder 2, and the discharge conveyor 4, and an OFF button for stopping the operation. Each switch outputs a predetermined command value other than a zero value when the ON button is operated, and a zero value when the OFF button is operated. The crusher switch signal A1, the feeder switch signal A2, the discharge conveyor switch signal. Output as A3. The left and right traveling levers 35 and 36 for commanding the speeds of the left and right traveling devices 5 and 5 output left and right traveling motor command values A4 and A5 corresponding to the operation amounts. When the left and right travel levers 35 and 36 are in the neutral position, the left and right travel motor command values A4 and A5 are set to zero values. The mode selection dial 37 can switch and select three selected positions of a work mode, a traveling mode, and an adjustment mode, and outputs a mode signal A6 for distinguishing each mode.

The second operation panel 31 includes a clearance adjustment switch 38 and a crusher inching switch 39 as an inching operation means.
have. The gap adjustment switch 38 is connected to the cylinder 19
And a narrow button that expands the cylinder 19 to reduce the outlet gap G by retracting the cylinder 19 and reduces a cylinder switch signal by setting a preset command value from the wide button and the narrow button. Output as A7. The wide and narrow buttons output their respective command values only while they are being operated.
The crusher inching switch 39 has a forward button for rotating the wheel 14 of the crusher 3 in a forward direction and a reverse button for rotating the wheel 14 in the reverse direction. It is output as a dynamic switch signal A8. The forward rotation button and the reverse rotation button output their respective command values only while being operated. By operating the forward rotation button and the reverse rotation button for a short period of time, the wheel 14 is slightly moved.

Next, a hydraulic circuit for controlling the positions of the work implements 2, 3, 4, the left and right traveling devices 5, 5 and the toggle block 17 of the clearance adjusting mechanism will be described. Each work machine 2, 3, 4, left and right traveling devices 5, 5 and toggle block 17 of gap adjusting mechanism
Are driven by respective actuators of a feeder motor 42, a crusher motor 41, a discharge conveyor motor 43, left and right traveling motors 44 and 45, and a cylinder 19.
Each actuator is provided with a feeder motor solenoid valve 4.
8, controlled by a crusher motor solenoid valve 47, a discharge conveyor motor solenoid valve 49, left and right traveling motor solenoid valves 50 and 51, and a cylinder solenoid valve 52, respectively. The crusher motor solenoid valve 47 and the left and right traveling motor solenoid valves 50 and 51 are a,
The directional control valve has three positions of n (neutral) and b, and discharges a flow according to the magnitude of the crusher electromagnetic valve signal B1 and the left and right traveling motor electromagnetic valve signals B4 and B5. Feeder motor solenoid valve 48 and discharge conveyor motor solenoid valve 49
Is an on / off valve having two positions, a and n (neutral) positions. When the feeder solenoid valve signal B2 and the discharge conveyor solenoid valve signal B3 have a zero value, the n position is activated, and when not, the a position is activated. I do. Cylinder solenoid valve 52
Is a direction switching on / off valve having three positions a, n (neutral) and b. Each solenoid valve has a hydraulic pump 53.
More pressure oil is being supplied.

Next, input / output signals of the controller 40 will be described. Crusher switch 32, feeder switch 33,
Discharge conveyor switch 34, left and right traveling levers 35, 3
6. Crusher switch signal A from mode selection dial 37, gap adjustment switch 38 and crusher inching switch 39
1, a feeder switch signal A2, a discharge conveyor switch signal A3, left and right traveling motor command values A4 and A5, a mode signal A6, a cylinder switch signal A7, and a crusher inching switch signal A8 are input to the controller 40. From the controller 40, the crusher motor solenoid valve 47, the feeder motor solenoid valve 48, the discharge conveyor motor solenoid valve 4
9. The crusher solenoid valve signal B1, the feeder solenoid valve signal B2, the discharge conveyor solenoid valve signal B3, the left and right running motor solenoid valve signals B4, B5, and the cylinder solenoid valve are provided to the left and right traveling motor solenoid valves 50 and 51 and the cylinder solenoid valve 52. The signal B7 is output. In addition, each solenoid valve signal B1, B2, B
When B3, B4, B5 and B7 are zero, each solenoid valve 4
7, 48, 49, 50, 51, and 52 are operated at the n position, and each of the actuators 41, 42, 43, 44,
45, 19 do not work.

Next, the processing flow of the controller 40 will be described with reference to FIG. In the following description of the processing flow, S is added to each processing step number. In step S1, it is determined whether or not the mode signal A6 is in the work mode. When the work mode is set, the process proceeds to step S2. When the work mode is not set (in the traveling mode or the adjustment mode), the process proceeds to step S3. . Step S3
It is determined whether or not at least one of the three ON buttons of the crusher switch 32, the feeder switch 33, and the discharge conveyor switch 34 is operated, and the operation is performed (one of the working machines is operated). (Operation), the feeder 2, the crusher 3, and the discharge conveyor 4 in step S4.
Is output, and the process proceeds to step S5. In step S5, it is determined whether or not all of the feeder 2, the crusher 3, and the discharge conveyor 4 have been stopped. If stopped, the process proceeds to step S6, and if not stopped, the process in step S4 is repeated. In step S3, when it is determined that all of the three ON buttons of the crusher switch 32, the feeder switch 33, and the discharge conveyor switch 34 are not operated (when all the working machines are stopped)
Moves to the process of step S6. In step S6, the mode signal A6 determines whether or not the vehicle is in the traveling mode. When the vehicle is in the traveling mode, the process proceeds to step S7. When the vehicle is not in the traveling mode (in the adjustment mode), the process proceeds to step S8.

In step S2, zero values are output as left and right traveling motor solenoid valve signals B4, B5 and cylinder solenoid valve signal B7. Further, a crusher switch signal A1, a feeder switch signal A2, and a discharge conveyor switch signal A3.
Are output as the crusher electromagnetic valve signals B1 and B2 and the discharge conveyor electromagnetic valve signal B3. In step S7, zero values are output as the crusher electromagnetic valve signal B1, the feeder electromagnetic valve signal B2, the discharge conveyor electromagnetic valve signal B3, and the cylinder electromagnetic valve signal B7. Also, the left and right traveling motor command values A4, A
5 are output as left and right traveling motor solenoid valve signals B4 and B5. In step S8, zero values are output as the crusher solenoid valve signal B1, the feeder solenoid valve signal B2, the discharge conveyor solenoid valve signal B3, and the left and right traveling motor solenoid valve signals B4 and B5. The signal A8 and the cylinder switch signal A7 are output as a crusher solenoid valve B1 and a cylinder solenoid valve signal B7.

Referring to FIG. 4, when the processing of step S4 for explaining the method of outputting the solenoid valve signals B1, B2, B3 in step S4 of the processing flow of FIG. The electromagnetic valve signal B2 is output to stop the feeder 2 at the most upstream position of the crushing operation. After a lapse of a predetermined time T1 after the feeder electromagnetic valve signal B2 becomes zero, the crusher 3 is stopped by outputting a crusher electromagnetic valve signal B1 having a zero value. Further, after a predetermined time T2 has elapsed since the crusher electromagnetic valve signal B1 has become zero, the discharge conveyor electromagnetic valve signal B3 of zero value is output, and finally the discharge conveyor 4 is stopped.

The operation and effect of this embodiment having the above configuration will be described. When the mode selection dial 37 is set to the work mode, the left and right traveling motors 44 and 45 and the cylinder 19 are set in step S2 of the processing flow.
Is stopped, the respective working machines of the feeder 2, the crusher 3 and the discharge conveyor 4 are made operable to perform the crushing operation. When traveling after completion of the crushing operation, the operator switches the mode selection dial 37 of the first operation panel 30 to the traveling mode. When the mode is switched to the traveling mode, when the OFF button is operated in all of the crusher switch 32, the feeder switch 33, and the discharge conveyor switch 33, the determination in step S3 of the processing flow is N.
Since it is O, the process moves to step S7 via step S6. In step S7, the operations of the working machines 2, 3, 4 and the cylinder 19 are stopped, and the left and right traveling motors 44, 4 are stopped.
Only 5 is made operable, and travel is performed. When the mode is switched to the traveling mode, one of the crusher switch 32, the feeder switch 33, and the discharge conveyor switch 33 is selected.
When the ON button is operated in the individual switches, the working machines 2, 3, and 4 that are operating are stopped in steps S4 and S5.

When the crushing operation is completed and the outlet gap G is adjusted, the operator switches the mode selection dial 37 to the adjustment mode. When the OFF mode is operated in all of the crusher switch 32, the feeder switch 33, and the discharge conveyor switch 33 when the mode is switched to the adjustment mode, the determination in step S3 of the processing flow is NO, and the processing in step S6 is performed. Move on. In step S6 of the processing flow, it is determined that the mode is the adjustment mode, and the process proceeds to step S8. In step S8, even if the operator erroneously operates the ON buttons of the crusher switch 32, the feeder switch 33 and the discharge conveyor switch 34, or the left and right traveling levers 35 and 36, the crusher electromagnetic valve signal B1 of zero value, the feeder It outputs the electromagnetic valve signal B2, the discharge conveyor electromagnetic valve signal B3, and the left and right traveling motor electromagnetic valve signals B4 and B5, so that the feeder 2 and the discharge conveyor 4 are not operated or run.

After switching the mode selection dial 37 to the adjustment mode, the operator moves to the position of the crusher 3 and
The forward and reverse buttons of the crusher inching switch 39 on the operation panel 31 are operated. Then, the crusher inching switch signal A8 input to the controller 40 is output to the crusher motor solenoid valve 47 as a crusher electromagnetic valve signal B1 in step S9. Thus, the rotational position of the wheel 14 is adjusted, and the mark M1 attached to the wheel 14 is matched with the mark M2 attached to the stationary wheel cover 15. Thereafter, when the wide button and the narrow button of the gap adjustment switch 38 are operated, the cylinder switch signal A7 input to the controller 40 is output to the cylinder electromagnetic valve 52 as the cylinder electromagnetic valve signal B7 in step S9, and the cylinder 19 expands and contracts. Control. The outlet gap G is adjusted by the expansion and contraction of the cylinder 19.

As described above, when adjusting the outlet gap G, the mode selection dial 37 is switched to the adjustment mode, so that the feeder 2, the crusher 3, and the discharge conveyor 4 are adjusted.
Stop and do not run. That is, even if an operator erroneously touches the crusher switch 32, the feeder switch 33, the discharge conveyor switch 34, and the left and right traveling levers 35 and 36 of the first operation panel 30, the controller 30 sends the electromagnetic valves for driving the respective actuators. Since the output of is set to zero, each work machine does not operate or run. Only when the operator operates the forward / reverse rotation button of the crusher inching switch 39 of the second operation panel 31, the crusher inching switch signal A8 is output to the crusher motor solenoid valve 47 as the crusher electromagnetic valve signal B1. You. Then, while the crushing machine 3 is slightly moved, the moving teeth 11 of the crushing machine 3 are positioned at the positions for adjusting the gap, and the gap is adjusted. As a result, at the time of adjusting the gap of the crusher, the working machine and the traveling device are reliably stopped.
The gap adjusting mechanism is not damaged during the gap adjustment, and it takes time to repair the crusher 3 of the main device, and the working efficiency does not decrease.

In this embodiment, the cylinder 19 is driven by oil discharged from a hydraulic pump 53 driven by an engine.
Crusher 3 that adjusts outlet gap G by controlling
Although the present invention has been described as an example, the present invention exerts the same effect also in the crusher 3 having a ram-type hydraulic cylinder which can be set to extend and contract manually and does not require a hydraulic pump. In the case of a ram-type hydraulic cylinder, a ram-type hydraulic cylinder is provided instead of the cylinder 19 in FIG. 6, and the clearance adjustment switch 38 and the cylinder solenoid valve 52 described in the present embodiment are not required. Further, in the present embodiment, a self-propelled crushing machine having three working machines of the feeder 2, the crushing machine 3, and the discharge conveyor 4 has been described as an example. The above working machine may be provided.

As described above, according to the present invention, if the mode selection dial is switched to the adjustment mode in order to adjust the outlet gap between the receiving teeth and the moving teeth of the crusher, the operator may erroneously change the feeder, the crusher and Even if the operation switch and travel lever of each work machine of the discharge conveyor are operated, the controller outputs a zero value command to each solenoid valve that controls each work machine and the travel device to operate each work machine and the travel device. Do not let. After switching to the adjustment mode, if the operator operates the forward / reverse rotation button of the crusher inching switch, the crusher inching switch signal is output to the crusher motor solenoid valve, the crusher is inching, and the Position the moving tooth at the gap adjustment position. The outlet gap is set to a predetermined value by controlling the stroke of the cylinder by operating the wide and narrow buttons of the gap adjustment switch. Thereby, when adjusting the gap of the crusher, the work implement and the traveling device are reliably stopped, so that the gap adjusting mechanism is not damaged during the gap adjustment. Therefore, since the repair of the crusher of the main device is not required for a long time, the working efficiency is not reduced.

[Brief description of the drawings]

FIG. 1 is an explanatory diagram of an arrangement position of an operation panel.

FIG. 2 is a control block diagram of the embodiment.

FIG. 3 is a control flowchart.

FIG. 4 is an explanatory diagram of a stop sequence of a work machine.

FIG. 5 is an explanatory view of a self-propelled crushing machine as an example.

FIG. 6 is an explanatory diagram of a crusher as an example.

[Explanation of symbols]

1. Self-propelled crusher, 2. Feeder, 3. Crusher, 4.
Discharge conveyor, 5: traveling device, 6: power source, 7: warning light, 8: hopper, 9: base, 10: receiving tooth, 11: moving tooth,
12: crusher motor, 13: belt, 14: wheel,
15 wheel cover, 16 cylinder seat, 17 toggle block, 18 rear frame, 19 cylinder, 2
0: toggle plate, 21: shim, 22: bolt, 30
... first operation panel, 31 ... second operation panel, 32 ... crusher switch, 33 ... feeder switch, 34 ... discharge conveyor switch, 35 ... right traveling lever, 36 ... left traveling lever, 37 ... mode selection dial, 38 ... Clearance adjustment switch, 39: crusher inching switch, 40: controller,
41 ... crusher motor, 42 ... feeder motor, 43 ... discharge conveyor motor, 44 ... right running motor, 45 ... left running motor, 47 ... crusher motor solenoid valve, 48 ... feeder motor solenoid valve, 49 ... discharge conveyor motor solenoid Valve, 50 ...
Right traveling motor solenoid valve, 51 ... Left traveling motor solenoid valve, 52
... Cylinder solenoid valve, A1 Crusher switch signal, A2 ...
Feeder switch signal, A3: discharge conveyor switch signal, A4: right traveling motor command value, A5: left traveling motor command value, A6: mode signal, A7: cylinder switch signal, A8: crusher inching switch signal, B1: crushing Machine solenoid valve signal, B2 ... feeder solenoid valve signal, B3 ... discharge conveyor solenoid valve signal, B4 ... right traveling motor solenoid valve signal, B5 ...
Left travel motor solenoid valve signal, B7 ... cylinder solenoid valve signal,
G: Exit gap, T1, T2: predetermined time.

Claims (3)

[Claims] A work machine such as a crusher (3) for crushing an object to be crushed, a feeder (2) for supplying the object to be crushed to the crusher (3), and a traveling device (5) capable of traveling freely. In the self-propelled crushing machine provided, a work mode for performing crushing work by the working machine, a traveling mode for performing traveling by the traveling device (5), and an adjustment mode for adjusting a clearance of a crushing unit of the crushing machine (3). And a controller (40) for disabling operations in the work mode and the traveling mode when the adjustment mode is selected by the mode selection means (37). A self-propelled crushing machine characterized by the following. 2. The self-propelled crushing machine according to claim 1, further comprising a jogging operation means (39) for jogging the crusher (3), and an adjustment mode selected by the mode selection means (37). In case,
A self-propelled crushing machine characterized in that the controller (40) enables the operation by the inching operation means (39). 3. The self-propelled crushing machine according to claim 1, wherein when the selection mode is switched from the work mode to the traveling mode or the adjustment mode, the controller (40) causes the operating work machine to move the crushed object. A self-propelled crushing machine, which sequentially stops from a work machine located on the upstream side of the transport path of the crusher.