JPH0681641U - Self-propelled waste material crushing machine - Google Patents

Abstract

(57) [Summary] (Correction) [Purpose] In a self-propelled waste material crushing processor, the number of hydraulic pumps should be reduced and the auxiliary devices can be operated independently. [Structure] The left and right traveling units 1 and 2 of a traveling vehicle can be independently operated and controlled by dedicated traveling hydraulic pumps 3 and 4 and traveling hydraulic control valves 5 and 6. While the traveling is stopped, the hydraulic pressures that have passed through the neutral ports of the traveling hydraulic control valves 5 and 6 are combined to enable the crusher 7 to be driven. The capacity of the control hydraulic pump 10 for controlling the traveling hydraulic pumps 3, 4, the hydraulic control valves 5, 6 and the like is increased. This control hydraulic pump 10
The priority valves 15, 16 and 17 that divide the flow into two systems are connected to the discharge side of the plurality of stages, and the priority valves 15, 16 and 1 of each stage are connected.
One of the outlet ports of 7 is a relief valve 18, 1
It is connected via 9 and 20 to a hydraulic motor for driving a small capacity auxiliary device. The other outlet port is connected to the inlet port of the next priority valve.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a hydraulically driven self-propelled waste material crushing treatment machine.

[0002]

[Prior art]

 Conventionally, a waste material crushing machine equipped with a crusher and a conveyor on a self-propelled trolley was driven hydraulically, and the crusher, conveyor, etc. were driven by an electric motor. There is an all-hydraulic drive system that is hydraulically driven, including devices. Of these, in the all-hydraulic drive type waste material crushing processor, the auxiliary equipment such as a conveyor has a small load, and the hydraulic pressure required for driving is small, but the crusher has a large load and a large load fluctuation. Therefore, it is difficult to simultaneously operate a crusher with a large capacity and large load fluctuations and a conveyor with a small capacity and small load fluctuations by using a hydraulic pump for traveling as well.

For this reason, as an auxiliary device such as a conveyor, it is necessary to use a dedicated small generator for driving an electric motor or individually install a small hydraulic pump unit dedicated for an engine-driven conveyor.

[0004]

[Problems to be solved by the device]

 However, in the above-mentioned self-propelled waste material crushing processor, when a small hydraulic pump unit such as a conveyor and a conveyor undulating device is separately installed, these piping systems and control systems become complicated and not only cost is high, but also Maintenance and inspection also take time and maintenance costs are high.

The present invention has been made to solve the above-mentioned conventional drawbacks, and its purpose is to use a hydraulic pump for controlling a hydraulic device as a drive for an auxiliary device such as a conveyor or a magnetic separator. The objective is to provide a self-propelled waste material crushing processor that can be operated independently of each other without being affected by the load and load fluctuations of the machines while reducing the number of equipment.

[0006]

[Means for Solving the Problems]

 Therefore, in the self-propelled waste material crushing processor of the present invention, a crusher 7, a hydraulic pump unit, and the like are mounted on a traveling carriage having hydraulic motor-driven traveling units 1 and 2, and further, a crushed material discharging conveyor and the conveyor are provided. In a self-propelled waste material shredding machine equipped with an undulating device, an auxiliary device such as a magnetic separator, the traveling drive units 1, 2 of the traveling carriage are composed of the traveling hydraulic pumps 3, 4 and the traveling hydraulic control valves 5, 6. While enabling the operation control, the displacement of the control hydraulic pump 10 for controlling the traveling hydraulic pressure control valves 5, 6 and the like is made larger than that required for control, and the discharge of the control hydraulic pump 10 is made. The priority valves 15, 16 and 17 that divide the flow into two systems are connected to a plurality of stages on one side, and one outlet side port of each of the priority valves 15, 16 and 17 of each stage is connected via a relief valve 18, 19 and 20, respectively. Of the above accessory devices In addition to connecting to the hydraulic lines for operation 12, 13, 14, the other outlet side port is connected to the inlet side port of the priority valve of the next stage, and one outlet side port of the priority valve 17 of the final stage is as described above. Similarly, to the drive hydraulic line, the other outlet side control hydraulic pressure for controlling the traveling hydraulic pumps 3 and 4 and the hydraulic control valves 5 and 6 by holding a required pressure with a relief valve 21. It is characterized by being connected to system 11.

[0007]

[Action]

 In the above-mentioned self-propelled waste material crushing machine, the discharge side of the control hydraulic pump 10 having a larger capacity than the conventional one is connected to the inlet side ports of each stage of the priority valves 15, 16 and 17 of multiple stages. , Each system divides the flow through the priority valves 15, 16 and 17 and the relief valves 18, 19 and 20 to supply to the drive hydraulic motor of the above-mentioned auxiliary device, so that individual load fluctuations However, they will be driven independently without being affected by each other. Since the circuit of the residual oil in the lowermost shunt is maintained at a constant pressure by the relief valve 21, this hydraulic pressure can be used as a stable hydraulic pressure as a control hydraulic pressure for the pump, the control valve and the like.

[0008]

【Example】

 Next, specific examples of the self-propelled waste material crushing and treating machine of the present invention will be described in detail with reference to the drawings. FIG. 1 is a hydraulic circuit diagram showing an embodiment of an all-hydraulic drive type self-propelled waste material crushing processor according to the present invention.

In FIG. 1, reference numeral 1 is a hydraulic motor-driven left-side traveling portion of a traveling carriage, and 2 is a right-side traveling portion. Both of them can rotate forward and backward, and are connected to, for example, a crawler belt and driving wheels. Reference numerals 3 and 4 denote traveling hydraulic pumps that supply drive hydraulic pressures to the left and right traveling portions 1 and 2, respectively, and reference numerals 5 and 6 denote hydraulic flow directions from the left and right traveling hydraulic pumps 3 and 4, respectively. It is a traveling hydraulic control valve for switching control. FIG. 2 shows this hydraulic control valve. When the traveling hydraulic control valves 5 and 6 are switched and controlled to the first switching position F so that the P port communicates with the A port, the traveling portions 1 and 2 are normally rotated, and the P port is This is for reversing when switching is controlled to the second switching position R so as to communicate with the B port. At the neutral position S, the P port communicates with the N port.

Next, 7 is a hydraulic motor driven crusher, and 8 is a crusher hydraulic control valve having the same structure as the traveling hydraulic control valves 5 and 6. The hydraulic pressures from the N ports of the traveling hydraulic pressure control valves 5 and 6 are merged and supplied to the hydraulic pressure control valve 8. The crusher 7, when the traveling units 1 and 2 are driven, that is, when the hydraulic pressure from the P port in the traveling hydraulic control valves 5 and 6 is supplied to either the A port or the B port, The N port that supplies the hydraulic pressure to the crusher hydraulic control valve 8 is always blocked so that the crusher 7 is not driven. On the other hand, when the traveling hydraulic control valves 5 and 6 are in the neutral position S, , N port to supply hydraulic pressure, and the crusher 7 is configured to drive based on the combined hydraulic pressure. Reference numeral 9 denotes a crusher relief valve, which limits the supplied hydraulic pressure during forward or reverse rotation of the crusher 7 so as not to exceed a predetermined value.

Reference numeral 10 denotes a control hydraulic pump, and the control hydraulic pump 10 has a larger pump capacity than the conventional one. In other words, the capacity is much larger than that required for control. Then, not only supply the hydraulic pressure to the control hydraulic pressure line 11 connected to the hydraulic control valves 5, 6, 8 etc., but also to the respective driving hydraulic motors for the delivery conveyor, the magnetic separator and the conveyor undulating device, which are auxiliary devices. The hydraulic lines 12, 13, and 14 connected to each are also configured so that they can be supplied by a diversion circuit. This shunt circuit is configured as follows.

That is, the discharge side of the control hydraulic pump 10 is divided into two systems by the first priority valve 15, and one outlet side port of the first priority valve 15 is discharged through the first relief valve 18. The hydraulic line 12 connected to the hydraulic motor for the conveyor is connected, and the other outlet side port is connected to the inlet side port of the second priority valve 16. Similarly, one outlet side port of the second priority valve 16 is connected to the magnetic line 13 for the magnetic separator via the second relief valve 19, and the other outlet side port is connected to the inlet side port of the third priority valve 17. The one outlet port of the third priority valve 17, which is the final stage, is connected to the hydraulic line 14 for the conveyor levitation device via the third relief valve 20. The other outlet port of the third priority valve 17 is held at a predetermined control pressure by the control hydraulic pressure line relief valve 21 and is connected to the control hydraulic pressure line 11. The hydraulic motor for each drive of the auxiliary equipment is connected to the preceding stage with a high required hydraulic pressure during operation. Further, each of the priority valves 15, 16 and 17 described above can divide the flow distribution at a large ratio such as 1:10, and the flow distribution ratio of a general flow dividing valve is practically about 1: 2. The feature is that a large diversion ratio can be obtained compared to. An example of this is shown in FIG. 3, which has a structure in which the pressure oil from the P port is preferentially supplied to the B port while the surplus flow is supplied to the A port.

In the device having the above structure, the left and right traveling hydraulic pumps 3 and 4 are driven, and the respective traveling hydraulic control valves 5 and 6 are set to either the first switching position F or the second switching position R. When switched to, the hydraulic pressure from the hydraulic pumps 3 and 4 is supplied to the left and right traveling sections 1 and 2 via the hydraulic control valves 5 and 6, and the traveling carriage travels. At this time, the N port communicating with the crusher hydraulic control valve 8 is blocked, so that the crusher 7 is not driven. On the other hand, when the traveling hydraulic control valves 5 and 6 are set to the neutral position S and the crusher hydraulic control valve 8 is switched to any position, the combined hydraulic pressures from the traveling hydraulic pumps 3 and 4 are changed to the crusher hydraulic pressure. It is supplied to the crusher 7 via the control valve 8 and the crusher 7 is driven. In this way, since both traveling hydraulic pumps 3 and 4 are also used to supply the hydraulic pressure to the hydraulic motor for driving the crusher, the number of hydraulic pumps can be reduced as compared with the conventional one.

Further, independently of the left and right traveling hydraulic pumps 3 and 4, the control hydraulic pump 10 controls the hydraulic motors for driving the accessory devices, the hydraulic control valves, and the like to the hydraulic lines 11, 12, 13 ,. Hydraulic pressure is supplied via 14. That is, the hydraulic pressure from the control hydraulic pump 10 is divided into two systems, one to the hydraulic line 12 connected to the discharge conveyor hydraulic motor via the first relief valve 18, and the other to the second priority valve 16. Is supplied. The hydraulic pressure from the second priority valve 16 is also divided into two systems, one to the hydraulic line 13 connected to the magnetic motor for the magnetic separator via the second relief valve 19, and the other to the third priority valve 17. Supplied. One of the hydraulic pressures from the third priority valve 17 is connected to the hydraulic line 14 connected to the hydraulic motor for the conveyor undulating device via the third relief valve 20, and the other is controlled by the control hydraulic line relief valve 21 to a predetermined control. The hydraulic pressure is maintained and supplied to the control hydraulic line 11.

As described above, in the self-propelled waste material crushing machine in the above embodiment, one control hydraulic pump 10 is provided with a plurality of priority valves 15, 16, 17 and relief valves 18, 19. , 20 are provided in order from high pressure to low pressure in order from the high pressure to the low pressure, and are connected to the auxiliary equipment of the waste material crushing treatment machine such as the conveyor, magnetic separator, conveyor undulating device, etc. Even if there are individual load fluctuations on 11, 12, 13, and 14, these can be operated independently without being affected by each other. In addition, the hydraulic pump 10 for the hydraulic control device can also be used for conveyors, magnetic separators, etc. that were previously equipped with dedicated hydraulic pumps, reducing the number of hydraulic pumps, reducing costs, and maintaining and inspecting. However, the time required for maintenance, etc. was shortened, and it became possible to operate with low maintenance costs.

[0016]

[Effect of device]

 As described above, in the self-propelled waste material crushing processor of the present invention, since one control hydraulic pump is also used for driving the auxiliary device, a dedicated drive is required for each auxiliary device as in the conventional case. There is no need to provide a hydraulic pump for the. Therefore, the number of hydraulic pumps can be reduced. Also, since the hydraulic pressure from the control hydraulic pump is supplied to the auxiliary device via a flow dividing circuit equipped with multiple stages of priority valves and relief valves, they are independent at the same time without being affected by mutual load fluctuations. You can drive.

[Brief description of drawings]

FIG. 1 is a hydraulic circuit diagram showing an embodiment of a self-propelled waste material crushing treatment machine of the present invention.

FIG. 2 is an explanatory diagram of a hydraulic control valve used in the above embodiment.

FIG. 3 is an explanatory diagram of a priority valve used in the above embodiment.

[Explanation of symbols]

 1 Traveling Section 2 Traveling Section 3 Traveling Hydraulic Pump 4 Traveling Hydraulic Pump 5 Traveling Hydraulic Control Valve 6 Traveling Hydraulic Control Valve 7 Crusher 10 Controlling Hydraulic Pump 11 Controlling Hydraulic Line 12 Hydraulic Line 13 Hydraulic Line 14 Hydraulic Line 15 Priority Valve 16 Priority valve 17 Priority valve 18 Relief valve 19 Relief valve 20 Relief valve 21 Relief valve for control hydraulic line

Claims (1)

[Scope of utility model registration request] 1. A crusher (7), a hydraulic pump unit, and the like are mounted on a traveling carriage having hydraulic motor driven traveling units (1) and (2), and a crushed material discharging conveyor,
In a self-propelled waste material crushing processor provided with an undulating device for the conveyor, an accessory device such as a magnetic separator, the traveling drive parts (1) and (2) of the traveling carriage are used for traveling with hydraulic pumps (3) and (4). While enabling operation control with hydraulic control valves (5) and (6),
The displacement of the control hydraulic pump (10) for controlling the traveling hydraulic control valves (5), (6) and the like is made larger than that required for the control, and the discharge side of the control hydraulic pump (10) is provided. Priority valve (15) (16) (1) that divides into two systems
7) is connected in multiple stages and each stage has a priority valve (15)
(16) One of the outlet ports of (17) is connected to the drive hydraulic lines (12), (13) and (14) of the auxiliary device via relief valves (18), (19) and (20), respectively, and The other outlet side port is connected to the inlet side port of the next stage priority valve, and one outlet side port of the final stage priority valve (17) is connected to the drive hydraulic line and the other outlet side in the same manner as described above. The port was connected to a control hydraulic system (11) for controlling the traveling hydraulic pumps (3) and (4) and the hydraulic control valves (5) and (6) while maintaining a required pressure with a relief valve (21). This is a self-propelled waste material crushing and processing machine.