JP2000225356A - Crushing control system of crusher - Google Patents

Abstract

PROBLEM TO BE SOLVED: To enhance operability and quick operation by enabling the remote operation of the respective machineries of a crusher from the interior of other construction machine other than the crusher without relying on manual operation. SOLUTION: In the crushing control system of a crusher for controlling the crusher equipped with a jaw crusher crushing a material to be crushed charged from a hopper, a plurality of machineries such as a feeder, a conveyor, a magnetic separator or the like performing the work related to the crushing work of the jaw crusher and hydraulic motors 19, 22 driving these machines, the operation signals of the foot switches 115a, 115b provided to the driver's seat of a hydraulic shovel 50 are transmitted from a transmitter 118 to be received by the receiver 119 provided to the crusher and an operation circuit device 100 controls the hydraulic motors 19, 22 on the basis of the received signals.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a crusher control system for a crusher, such as a jaw crusher, a roll crusher, or a shearing machine, for controlling a crusher for crushing an object to be crushed.
More specifically, the present invention relates to a crusher crushing control system capable of improving operability and quickness of operation by enabling each device of the crusher to be remotely operated without manual operation from inside a hydraulic excavator.

[0002]

2. Description of the Related Art Crushers transport various kinds of large and small rocks, construction waste materials, industrial wastes and the like generated at construction sites such as concrete lump taken out when dismantling buildings and asphalt lump discharged during road repair. By performing crushing to a predetermined size at the work site before the work, reuse of waste materials, smoothing of construction, cost reduction, and the like are achieved.
Among such crushers, for example, a self-propelled crusher
It is composed of a traveling body equipped with a crawler track on the right and a crusher main body provided above the traveling body. The crusher body is
For example, a hopper into which crushed materials are input by a working tool such as a bucket of a hydraulic shovel, a feeder that guides the crushed materials input from the hopper to a crushing device, and a crushing device that crushes the crushed materials to a predetermined size. A conveyor that transports the crushed material that has been crushed and reduced by the crushing device to the front of the crusher, and magnetically suctions and removes magnetic substances contained in the crushed material that is provided above the conveyor and is being transported on the conveyor. It has a magnetic separator, and a monitoring seat for monitoring the supply status and crushing status of the crushed material during the crushing operation by the operator (however, there is no actual seat and the monitoring is often performed while standing).

[0003] The material to be crushed introduced into the hopper above the crusher is guided to the crusher by a feeder below the hopper.
It is crushed to a predetermined size by this crushing device. The crushed crushed material falls from a space below the crushing device onto a conveyor below the crushing device, and is conveyed by this conveyor. In the middle of this transportation, for example, a magnetic separator arranged above the conveyor adsorbs and removes, for example, rebar pieces mixed in the concrete lump, and is almost uniform in size and finally carried out from the front of the crusher. You.

During the above operation, if a crushed object or a non-crushable foreign substance having a size or an amount exceeding the crushing capacity of the crushing device is supplied, the crushing device is clogged with the crushed material, and the crushing device is clogged. May cause stoppage or damage. Therefore, it is important to appropriately supply the crushed object from the feeder to the crushing device. Here, devices such as a feeder, a crusher, a conveyor, and a magnetic separator are controlled by buttons, switches, and dials provided on an operation panel, and the driving thereof is controlled as described above. As an example of the operation performed by the operation panel from the viewpoint of supply,
For example, there are the following two. When the supply amount from the feeder to the crushing device becomes excessive, the "feeder OFF button" on the operation panel is pressed to stop the feeder supply operation. When a supply abnormality other than the above occurs, the emergency stop button is pressed on the operation panel to make an emergency stop.

[0005] Usually, a dedicated operator is arranged in the crusher, and while monitoring the crushing state of the crusher, the above-mentioned operation panel is appropriately operated according to the crushing state. Therefore, when an object to be crushed is introduced into the crusher by another construction machine such as a hydraulic excavator, a total of two operators, an operator of the other construction machine and an operator of the crusher, are installed at the operation site. Is required, which is not preferable from the viewpoint of labor saving.

[0006] To solve this problem, Japanese Patent Application Laid-Open No. 8-15 / 1996
As described in Japanese Patent No. 5326, when the operator of the hydraulic shovel operates each button, switch, etc. of the crusher operation unit disposed in the hydraulic shovel cab, each device of the crusher via a radio wave. A crushing control system that enables remote control of crushing has been proposed.

[0007]

According to the prior art described above, the operator of the excavator can remotely control each device of the crusher, so that the operator of the excavator also serves as the operator of the crusher. The dedicated operator of the crusher can be omitted. However, in the above-described conventional technology, when operating each device of the crusher, it is necessary to operate buttons, switches, and the like of a crusher operation unit provided beside a seat in the cab of the hydraulic shovel. It was inconvenient to operate each device of the crusher during the operation. That is, for example, when the operation lever of the hydraulic shovel is operated with both hands and the crushed material is thrown into the hopper with the bucket, the throwing amount becomes slightly excessive, and a short time is required to prevent excessive supply to the crushing device. You may want to stop the time feeder. In such a case, there is a case where the excavator wants to continue the operation even while the feeder is stopped. In such a case, it is convenient if the feeder can be stopped or restarted without releasing both hands from the operation lever of the excavator. . However, in the above-described conventional technology, the feeder cannot be stopped unless the hand is once released from the operation lever, and there is room for improvement in operability.

[0008] For example, when the equipment of the crusher is emergency stopped, it is an emergency situation in which some supply abnormality has occurred, so it is preferable to stop the crusher immediately as soon as possible. However, in the above prior art, after releasing the operating lever of the hydraulic excavator, the hand must be moved to the buttons, switches, etc. of the crusher operating unit beside the seat, so that the emergency stop is delayed by that much. Become. Further, depending on the position of the excavator at that time, the hand cannot be released from the operation lever as it is, and it is necessary to move the excavator until the posture becomes safe and stable, so that the emergency stop is further delayed.

[0009] It is an object of the present invention to improve the operability and quickness of operation of a crushing machine by enabling the crushing machine to be remotely operated without manual operation from inside the construction machine other than the crushing machine. It is to provide a control system.

[0010]

In order to achieve the above object, the present invention provides a crushing device for crushing a material to be crushed introduced from a hopper and an auxiliary machine for performing work related to crushing work by the crushing device. A crusher crushing control system for controlling a crusher including a plurality of devices including, and a plurality of hydraulic actuators respectively driving the plurality of devices, wherein an operation signal of a remote control means provided outside the crusher Is transmitted from transmitting means provided outside the crusher and received by receiving means provided in the crusher, and control means provided in the crusher controls the plurality of hydraulic actuators based on the received signal. In the crushing control system of the machine,
The remote control means includes a foot switch that can be operated by an operator with a foot. By operating a foot switch as a remote control means with a foot, the operation signal is input to the control means via the transmission means and the reception means, and the control means is based on the control signal and the hydraulic actuator corresponding to the plurality of devices of the crusher Control. This allows
By providing a foot switch, for example, on the driver's seat floor of a hydraulic shovel or an operating lever, it is possible to operate a plurality of devices of the crusher without releasing the operating lever of the hydraulic shovel. Therefore, a plurality of devices of the crusher can be operated while the operation of the hydraulic excavator is continued, so that operability can be improved. Further, since a plurality of devices of the crusher can be operated immediately from the single operation of the hydraulic excavator, the operation speed can be improved.

Preferably, the remote control means and the transmission means are provided on a construction machine other than the crusher, and the foot switch of the remote control means is
It is provided on the floor of the driver's seat of the construction machine.

[0012] The present invention also provides a plurality of devices including a crushing device for crushing an object to be crushed supplied from a hopper and an auxiliary machine for performing work related to crushing work by the crushing device.
A crusher control system for a crusher that controls a crusher including a plurality of hydraulic actuators that respectively drive the plurality of operations, wherein an operation signal of a remote control unit provided outside the crusher is output to the outside of the crusher. In the crusher crushing control system in which the transmitting means provided and received by the receiving means provided in the crusher and the control means controls the plurality of hydraulic actuators based on the received signal, the remote control means And a control lever provided on a construction machine other than the crusher and operating the construction machine.

Preferably, the plurality of devices of the crusher include a feeder for supplying the crushed object put into the hopper to the crushing device.

[0014]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment in which the present invention is applied to a self-propelled crusher will be described below with reference to the drawings. First, an embodiment of the present invention will be described with reference to FIGS.

FIG. 2 is a side view showing the entire structure of a self-propelled crusher to which the crushing control system according to one embodiment of the present invention is applied, and FIG. 3 is a self-propelled crusher shown in FIG. FIG. 4 is a top view of the machine, and FIG. 4 is a diagram illustrating an example of an operation state during a crushing operation.

In FIGS. 2, 3 and 4, the self-propelled crusher 1 is, for example, a bucket 5 of a hydraulic shovel 50.
The hopper 2 into which the object to be crushed 52a is thrown in by the work implement 1; the jaw crusher 3 as a crushing device for crushing the crushed object into a predetermined size having a substantially V-shaped side sectional shape; A feeder 4 that guides the input crushed material 52a to the jaw crusher 6, a conveyor 5 that transports the crushed material 52b crushed and reduced by the jaw crusher 3 to the front of the crusher 1, and a conveyor 5 that is provided above the conveyor 5. A crusher main body 7 equipped with a magnetic separator 6 for magnetically sucking and removing magnetic substances contained in the crushed material 52b being conveyed on the conveyor 5, and a left and right crusher provided below the crusher main body 7
And a traveling body 8 having a right endless track crawler 8a.

The jaw crusher 3 is installed on a frame 9 provided on the crusher main body 7 as a connection portion with the traveling body 8, and a crusher hydraulic motor 20 (see FIG.
Moving tooth 3a (see FIG. 3) by the driving force generated in the driving tooth 3a (see FIG. 3).
Are oscillated back and forth with respect to the fixed teeth 3b (same as above) to crush the supplied crushed object 52a to a predetermined size. Above the jaw crusher 3, a net 10 (see FIG. 3) is provided as a cover.

The feeder 4 is a so-called grizzly type feeder. The bottom plate including a plurality of saw-tooth plates 4a is vibrated by a driving force generated by a feeder hydraulic motor 19 (see FIG. 1 described later). As a result, the crushed material 52a put into the hopper 2 is sequentially supplied to the jaw crusher 3, and fine earth and sand attached to the crushed material 52a are dropped downward from the gap of the saw-tooth plate 4a.

The conveyor 5 is driven by a conveyor hydraulic motor (not shown) to drive a belt (the same), thereby transporting the crushed material 52b dropped from the jaw crusher 3 onto the belt.

The magnetic separator 6 drives a belt 6a disposed above the belt of the conveyor 5 so as to be substantially orthogonal to the conveyor belt by means of a magnetic separator hydraulic motor (not shown) around magnetic force generating means (the same). Then, the magnetic force from the magnetic force generating means is applied over the belt 6a to attract the magnetic substance to the belt 6a, and then is transported in a direction substantially orthogonal to the conveyor belt and dropped to the side of the conveyor belt. It has become. The crawler crawler tracks 8a are respectively stretched between a drive wheel 11 and an idler 12 provided on the traveling body 8, and run left and right hydraulic motors (not shown) provided on the drive wheel 11 side. ), The crusher 1 is made to travel by applying a driving force. Further, on the crusher main body 7, an operator room (but no roof) 13 is provided for the operator to monitor the supply state of the crushed object by the feeder 4 and the crushing state by the jaw crusher 3 during the crushing operation. ing. This operator room 1
An operation panel 14 (details of which will be described later) is installed at the lower rear part of 3. The operation panel 14 can substitute at least part of the operation functions of the operation panel 14 and
Is connected to the pendant 15 having a size that can be held by the dedicated operator (hereinafter, simply referred to as "the crusher dedicated operator"). The crusher body 7
A power unit 16 containing an engine (see FIG. 1 described later) and a hydraulic pump (same) is provided on the rearmost frame 9.
Is provided.

At the time of the crushing operation, the crushed object 52a put into the hopper 2 by a bucket of a hydraulic shovel, for example.
Is guided from the lower part of the hopper 2 to the jaw crusher 3 by the feeder 4 and is crushed to a predetermined size. Then, the crushed crushed material 52b falls onto the conveyor 5 from the space below the jaw crusher 3 and is transported. During the transportation, the magnetic material (for example, rebar pieces mixed in the concrete construction waste material) mixed in the crushed material 52b by the magnetic separator 6 is removed, the size is almost uniform, and finally the crusher 1 (The left end in FIG. 2).

Here, the jaw crusher 3, the feeder 4, the conveyor 5, the magnetic separator 6, and the traveling body 7 constitute driven members driven by a hydraulic driving device provided in the self-propelled crusher 1. ing. FIG. 1 is a hydraulic circuit diagram and a communication system diagram showing a main structure of a hydraulic drive device of a crusher provided in one embodiment of the present invention.

In FIG. 1, the hydraulic drive unit includes an engine 17, two hydraulic pumps 18a and 18b driven by the engine 17, and these hydraulic pumps 18a and 18b.
A plurality of hydraulic actuators including hydraulic motors 19 and 20 to which hydraulic oil discharged from the hydraulic pump 18a is supplied, a control valve 21 for controlling the direction and flow rate of hydraulic oil supplied from the hydraulic pump 18a to the hydraulic motor 19, A control valve 2 for controlling the direction and flow rate of pressure oil supplied from the hydraulic pump 18b to the hydraulic motor 20 respectively
2, relief valves 23a and 23b provided in pipes branched from the discharge pipes of the hydraulic pumps 18a and 18b, and defining the maximum value of each pump discharge pressure, the jaw crusher 3, the feeder 4, the conveyor 5, and the magnetic separator The crusher 6 includes the operation panel 14 and the pendant 15 as operation means that can be operated by a crusher dedicated operator to start and stop the machine 6.

The two hydraulic motors 19 and 20 are used to generate a driving force for operating the feeder 4.
And a crusher hydraulic motor 20 that generates a driving force for operating the jaw crusher 3.

The control valves 21 and 22 include a feeder control valve 21 connected to the feeder hydraulic motor 19 and a crusher control valve 22 connected to the crusher hydraulic motor 20. In addition, the control valve 21 and the control valve 22 are configured such that the drive current from the operation circuit device (see FIG. 5 described later) is applied to the solenoid valve 21a and the solenoid valve 22a.
When input to 1 or 22a2, the solenoid SOL3 (see FIG. 5 described later) and the solenoids SOL1 and SOL2 (same) are excited, and the spool is switched. That is, when the drive current is input to the solenoid SOL3 of the solenoid valve 21a, the feeder control valve 21 is switched to the right position in FIG. 1, and the pressure oil supply pipe 24 is communicated to supply the pressure oil from the hydraulic pump 18a. Guide to the feeder hydraulic motor 19,
The feeder hydraulic motor 19 is driven. Then, when the drive current value to the solenoid SOL3 of the solenoid valve 21a becomes 0, it returns to the left position in FIG. 1 by the restoring force of the spring 21c, shuts off the pressure oil supply line 24 and stops the feeder hydraulic motor 19. It has become. When a drive current is input to the solenoid SOL1 (or the solenoid SOL2) of the solenoid valve 22a1 (or the solenoid valve 22a2), the crusher control valve 22 is switched to the left position (the right position) in FIG. 25, the hydraulic oil from the hydraulic pump 18b is guided to the hydraulic motor 20 for crusher, and the hydraulic motor 20 for crusher is driven in the normal rotation direction (or reverse rotation direction). When the drive current value to the solenoid SOL1 (or the solenoid SOL2) of the solenoid valve 22a1 (or the solenoid valve 22a2) becomes zero, the spring returns to the neutral position by the restoring force of the spring 22c2 (or the spring 22c1). The road 25 is shut off and the crusher hydraulic motor 20 is stopped.

Although not particularly shown, other devices, that is, hydraulic actuators for driving the conveyor 5 and the magnetic separator 6 are also provided with control valves similar to the control valves 21 and 22.
a or hydraulic oil from the hydraulic pump 18b.
The solenoids provided in the control valves are incorporated in the operation circuit device 100 in the same connection relationship as, for example, a solenoid SOL3 shown in FIG. 6 described later.

FIG. 5 shows an example of the structure of the operation panel 14 of the crusher 1 provided in one embodiment of the present invention. In FIG. 5, the operation panel 14 firstly controls the start and stop of each device by driving the crusher hydraulic motor 20 in the forward rotation direction and the reverse rotation direction, respectively, to thereby rotate the jaw crusher 3 forward and backward. A rotation button 14a1 and a crusher reverse rotation button 14a2; a crusher stop button 14a3 for stopping the crusher hydraulic motor 20 to stop the jaw crusher 3; a feeder ON button 14b1 for driving the feeder hydraulic motor 19 to operate the feeder 4; , Feeder hydraulic motor 1
Feeder OFF button 14b2 for stopping conveyor 9 and stopping feeder 4, Conveyor ON button 14c1 for driving conveyor hydraulic motor to operate conveyor 5 and conveyor OFF for stopping conveyor hydraulic motor and stopping conveyor 5 A button 14c2 and a magnetic separator ON button 14 for driving the magnetic separator hydraulic motor to operate the magnetic separator 6
d1 and a magnetic separator OFF button 14d2 for stopping the magnetic separator hydraulic motor by stopping the magnetic separator hydraulic motor.

The operation panel 14 includes a work mode button 14 e for selecting a “work mode” corresponding to a normal crushing work, as related to setting of the number of revolutions of the engine 17.
A P mode button 14f for selecting a “P mode” capable of handling a load larger than the normal crushing work, a light mode button 14g for selecting a “light mode” corresponding to a load smaller than the normal crushing work, and idling. And an accelerator button 14i1 and a decel button 14i2 for finely adjusting and increasing / decreasing the engine speed in these mode settings. At this time, although not shown in detail, the engine 17 includes:
A fuel injection device for injecting fuel into the engine 17 and a fuel injection control device for controlling the fuel injection amount of the fuel injection device are provided in combination. The fuel injection control device controls the fuel injection amount of, for example, a known fuel injection pump provided in the fuel injection device, based on the operation of the buttons 14e to 14i by the operator. Thus, the rotation speed of the engine 17 is set according to a signal from the operation panel 14.

In addition to the above, the operation panel 14 includes a remote switch 14j for selecting whether or not the operation with the pendant 15 is enabled, an emergency stop button 14k for urgently stopping each device, and an operation panel 14 Key switch 141 for inserting a key to perform all operations of
And a horn button 14m for warning the surroundings at the time of work or the like.

The pendant 15 can replace at least a part of the operation functions of the operation panel 14 as described above, and corresponds to a function substituted for the buttons and switches provided on the operation panel 14. Has buttons.
In this embodiment, an emergency stop button 15a which can substitute the function of the emergency stop button 14k of the operation panel 14,
A feeder ON button 15b1 and a feeder OFF button 15 that can substitute the functions of the feeder ON button 14b1 and the feeder OFF button 14b2 of the operation panel 14, respectively.
b2 and the crusher normal rotation button 14a1, the crusher reverse rotation button 14a2, and the crusher stop button 14a3 of the operation panel 14 which can substitute the functions of the crusher normal rotation button 15c1, the crusher reverse rotation button 15c2, and the crusher stop button 15c3, respectively. It has six buttons. Each button of these pendants 15 is electrically connected to the operation panel 14, and together with each button, switch, dial, etc. of the operation panel 14, an operation circuit device 100 (described later) that operates each device of the crusher 1. Is part of.

FIG. 6 is an electric circuit diagram showing an example of a structure related to the jaw crusher 3 and the feeder 4 in the operation circuit device 100 of the crusher provided in one embodiment of the present invention. In FIG. 6, 24 V DC is led to the bus 101 on the power supply side, and the crusher normal rotation button 14 of the operation panel 14 described above is
a1, crusher reverse button 14a2, crusher stop button 14a3, feeder ON button 14b1, feeder O
Crusher forward contact 10 built in and interlocked with the FF button 14b2 and the emergency stop button 14k
3. Crusher reverse contact 104, crusher stop contact 105, feeder start contact 106, feeder stop contact 107, and emergency stop contact 108, the emergency stop button 15a, feeder ON button 15b1, and feeder of the pendant 15 described above. OFF button 15b2, crusher normal rotation button 15c1, crusher reverse rotation button 15c2,
And an emergency stop contact 109, a feeder start contact 110, a feeder stop contact 111, a crusher forward rotation contact 112, and a crusher reverse rotation contact 11 which are incorporated in the crusher stop button 15c3 and open / close in conjunction therewith.
3, the crusher stop contact 114, the solenoids SOL3, SOL1, SOL2 provided in the solenoid valves 21a, 22a1, 22a2, the coil portions R1 to R6 of the relay, and the relay coil portions R1 to R6. Are energized, the relay contact portions R1 'to R6', which become conductive positions,
They are connected as shown.

The crusher forward rotation contact 103 is a contact portion 1
03a and a contact portion 103b. Normally, the contact portion 103a is open and the contact portion 103b is closed.
When the crusher normal rotation button 14a1 of the operation panel 14 is pressed, the contact 103a closes and the contact portion 103b opens only while the crusher normal rotation button 14a1 is pressed. The crusher reverse contact 104 includes a contact portion 104a and a contact portion 104b.
Are open, and the contact portion 104a is in a closed state. And
When the crusher reverse button 14a2 of the operation panel 14 is pressed, the contact 104b closes and the contact portion 104a opens only while the crusher reverse button 14a2 is pressed. Further, the crusher stopping contact 105 includes contact portions 105a and 105b.
And both are normally in a closed state. Then, when the crusher stop button 14a3 of the operation panel 14 is pressed, the contact portions 105 are pressed while the crusher stop button 14a3 is pressed.
a and 105b are opened. The feeder activation contact 106 is normally open, and when the feeder ON button 14b1 of the operation panel 14 is pressed, it is closed only while the feeder ON button 14b1 is pressed. The feeder stop contact 107 is normally closed and is opened only while the feeder OFF button 14b2 of the operation panel 14 is being pressed.
The emergency stop contact 108 is normally closed, and is opened only while the emergency stop button 14k of the operation panel 14 is being pressed.

On the other hand, the emergency stop button 1 of the pendant 15
The contact 109 linked to 5a is normally closed,
When the operator presses the emergency stop button 15a, it is opened only while the button is pressed. Feeder ON button 1
The contact 110 linked to 5b1 is normally open and closed only while the operator presses the feeder ON button 15b1, and the contact 111 linked to the feeder OFF button 15b2 is normally closed. It is opened only while the user is pressing the feeder OFF button 15b2. Normally, the contact 112 linked to the crusher normal rotation button 15c1 of the pendant 15
a is open, the contact portion 112b is in a closed state, and when the crusher normal rotation button 15c1 is pressed, the contact portion 112a closes and the contact portion 112b
Opens. The contact 113 that is linked to the crusher reverse rotation button 15c2 is normally in a state where the contact part 113b is open and the contact part 113a is closed, and the contact part 113b closes and the contact part only while the crusher reverse rotation button 15c2 is pressed. 113a is opened. In addition, a contact 11 linked to the crusher stop button 15c3
4 is normally in a state where both of the contact portions 114a and 114b are closed, and the contact portions 114a and 114b are opened only while the crusher stop button 15c3 is pressed.

The crushing control system according to the present embodiment
The self-propelled crusher 1 is controlled as described above. As shown in FIG. 1, the function of the operation panel 14 provided on the floor of the driver's seat 53 of the excavator 50 (see FIG. 7 described later). Among them (in this embodiment, an emergency stop and a feeder stop, which will be described later), and a foot switch 115a, 115b which can be used as a substitute, and an operation signal for the foot switch 115a, 115b, which is provided on the excavator 50, is amplified. An amplifier 116 and an operation signal amplified by the amplifier 116 are input, and the signal is transmitted to, for example, a radio signal 117.
And a transmitter 118 for converting the
And a receiver 119 for receiving the radio signal 117 transmitted from the control circuit device 10 and decoding the signal into the original operation signal.
0, which receives a signal from the receiver 119 and outputs a drive signal corresponding to the signal, and a discriminating circuit 120 (see FIG. 6) which is provided in the operation circuit device 100 and which is driven by the discriminating circuit 120. Emergency stop switch 121 (same as above) for opening and closing power supply side bus 101 in response to a signal
And a feeder stop switch 122 (the same) that opens and closes in response to a drive signal from the control unit 20.

The transmitter 118 is, for example, an excavator 50
And is connected to an amplifier 116 via a cable (not shown). The amplifier 1 is input from the foot switches 115a and 115b.
After performing a predetermined conversion process on the operation signal amplified in 16, the operation signal is transmitted as a radio signal 117 to the receiver 119. The receiver 119 is provided, for example, in the operation panel 14 of the crusher 1 and receives a radio signal 117 from the transmitter 118,
After performing a conversion process reverse to the process in the transmitter 118 to restore the operation signal, the operation signal is output to the determination circuit 120. The transmitter 118 and the receiver 119 need only be known as this type of communication means, and a detailed description thereof will be omitted.

The foot switches 115a and 115b are connected to an amplifier 116 via a cable 123.
As shown in FIG. 7, in the cab 52 of the excavator 50, the hydraulic excavator 50 is disposed on the floor immediately in front of the seat 54. When the operator of the excavator 50 steps on these foot switches 115a and 15b, the operation signal is transmitted to the cable 1
The signal is input to the amplifier 116 via the amplifier 23, amplified, further input to the transmitter 118, transmitted as a radio signal 117 to the receiver 119, and input to the determination circuit 120.

The discriminating circuit 120 includes a foot switch 115
A drive signal to the emergency stop switch 121 and the feeder stop switch 122 is generated based on operation signals input from the transmitters 118 and 115b via the transmitter 118 and the receiver 119, and the drive signals are output to the corresponding switches. It has become. That is, when the emergency stop foot switch 115a in the excavator operator's seat 53 is stepped on, the emergency stop switch 121 of the operation circuit device 100 is opened and the power supply bus 101 is shut off only while the foot switch 115a is stepped on. I do. Also, a foot switch 115 for stopping the feeder
When step b is stepped on, the feeder stop switch 122 of the operation circuit device 100 is opened only while the step is stepped on.

The power supply for the amplifier 116 and the transmitter 118 related to the communication is supplied from the DC power supply of the hydraulic excavator 50, and the power supply for the receiver 119 and the discriminating circuit 120 is supplied from the DC power supply of the crusher 1. I do. This reliably prevents wireless communication from becoming inoperable due to battery exhaustion or the like.

In the above-described configuration, the feeder 4, the conveyor 5, the magnetic separator 6, and the like constitute an auxiliary machine for performing operations related to the crushing operation by the crushing device, and the jaw crusher 3 as the crushing device. Constitute a plurality of devices. Also, the foot switches 115a and 115b constitute remote control means provided outside the crusher, the transmitter 118 constitutes transmission means provided outside the crusher, and the receiver 119 constitutes reception means provided in the crusher. , The operation circuit device 100
Control means for controlling the plurality of hydraulic actuators based on the received signals is configured.

Next, the operation of the embodiment of the crusher of the present invention will be described. (1) Operation of the jaw crusher 3 by the operation panel When the operator of the crusher 1 wants to operate the jaw crusher 3, the operation can be performed by the operation panel 14. When it is desired to start the jaw crusher 3 in the normal rotation direction from a stopped state, when the crusher normal rotation button 14a1 is pressed, the contact portion 103b of the crusher normal rotation contact 103 is opened while the push button 14a1 is pressed in FIG. 103a is closed. As a result, DC 2 is applied to the relay coil portions R1 and R2.
4V is supplied to excite them. The excitation of the relay coil portion R1 closes and conducts the relay contact portion R1 ', so that a drive current is supplied to the solenoid SOL1 provided in the solenoid valve 22a1 for crusher normal rotation, so that the solenoid SOL1
Is excited. On the other hand, at this time, since the relay contact portion R2 'connected in parallel with the contact portion 103a is closed by the excitation of the relay coil portion R2 and becomes conductive, the operator once presses the crusher normal rotation button 14a1 and then releases the crusher normal rotation button 14a1. Even when the contact portion 103a of the contact 103 is opened, the relay coil portions R1 and R2 are continuously excited, and as a result, the solenoid SOL1 maintains the excited state. As a result, the control valve 22 is switched to the left side position in FIG. 1, and the hydraulic oil from the hydraulic pump 18b is guided to the crusher hydraulic motor 20 to drive the crusher hydraulic motor 20 in the normal rotation direction. When it is desired to start the jaw crusher 3 in the reverse direction from the stopped state, when the crusher reverse rotation button 14a2 is pressed, the contact portion 10a of the crusher reverse contact 104 opens while the contact portion 104b is opened.
Closes. As a result, the relay coil portions R3 and R4 are excited, and the solenoid valve 22a2 is turned on by the conduction of the relay contact portion R3 '.
Solenoid SOL2 is excited. At this time, since the relay contact portion R4 'is closed and becomes conductive by the excitation of the relay coil portion R4, the solenoid SOL2 maintains the excited state even if the contact portion 104b of the crusher reverse contact 104 is opened thereafter. As a result, the control valve 22 is switched to the right side position in FIG. 1 and the crusher hydraulic motor 20 is driven in the reverse direction. As described above, the jaw crusher 3 is rotated in the normal direction (or in the reverse direction).
When the crusher stop button 14a3 is pressed, the contact portions 105a and 105b of the crusher stop contact 105 are pressed only while the crusher stop button 14a3 is pressed.
Open together. As a result, the relay coil portions R1, R2
(Or the current supplied to the relay coil units R3 and R4) is cut off, and the relay coil units R1 and R2 (or the relay coil units R3 and R4) return to the non-excited state. When the relay coil portion R1 (or the relay coil portion R3) returns to the non-excited state, the relay contact portion R1 '(or the relay contact portion R
3 ') is opened and cut off, so that the drive current to the solenoid SOL1 (or the solenoid SOL2) provided in the crusher forward rotation solenoid valve 22a1 (or the crusher reverse rotation solenoid valve 22a2) is cut off. At this time, the relay coil unit R
When the relay contact 2 (or the relay coil R4) returns to the de-energized state, the relay contact R2 '(or the relay contact R4') is cut off.
3 is pressed and then released, and the crusher stop contact 105
Of the relay coils R1, R2 (or the relay coil R
3, R4) is maintained in the non-energized state, and as a result, the solenoid
SOL1 (or SOL2) maintains the de-energized state. As a result, in FIG.
It returns to the neutral position by the restoring force of 2 (or the spring 22c1), shuts off the pressure oil guided from the hydraulic pump 18b to the crusher hydraulic motor 20, and stops driving the crusher hydraulic motor 20.

(2) Operation of the jaw crusher by the pendant The jaw crusher 3 can also be operated by the pendant 15. When it is desired to start the jaw crusher 3 in a forward direction (or a reverse direction) from a stopped state,
After turning on the remote switch 14j of the operation panel 14 in advance, the crusher normal rotation button 15
When c1 (or the crusher reverse rotation button 15c2) is pressed, the contact portion 1 of the crusher forward rotation contact 112 (or the crusher reverse rotation contact 113) only while the button is pressed, as in (1) above.
12b (or contact portion 113a) is open while contact portion 11
2a (or contact portion 113b) is closed. As a result, DC 24 is applied to the relay coil portion R7 (or the relay coil portion R8).
V is supplied, they are excited, and the relay contact R7 '
(Or the relay contact portion R8 ') is closed and conductive, so that the drive current is supplied to the solenoid SOL1 (or the solenoid SOL2) of the solenoid valve 22a1 for crusher normal rotation (or the solenoid valve 22a2 for crusher reverse rotation) to be excited. . At this time, similarly to the above (1), the operator presses the crusher normal rotation button 1
Even if 5c1 (or crusher reverse button 15c2) is pressed and then released, solenoid SOL1 (or solenoid SOL2) maintains the excited state. As a result, the pressure oil from the hydraulic pump 18b is guided to the crusher hydraulic motor 20, and is driven in the normal rotation direction (or the reverse rotation direction). When the crusher stop button 15c3 of the pendant 15 is pressed when it is desired to stop the jaw crusher 3 from being driven in the normal rotation direction (or the reverse rotation direction) as described above, the crusher is stopped only while the crusher is being pressed. Contact part 1 of contact 114 for use
14a and 114b are both opened, and the relay coil portions R1,
The current supplied to R2 (or the relay coil units R3, R4) is cut off and returns to the non-excited state. As a result, the relay contact portion R1 '(or the relay contact portion R3') opens and shuts off, so that the solenoid SOL1 (or the solenoid SOL2) provided in the crusher forward rotation solenoid valve 22a1 (or the crusher reverse rotation solenoid valve 22a2) is provided. Is interrupted, and the crusher hydraulic motor 20
Of the crusher hydraulic motor 20 is stopped.

(3) Operation of Feeder by Operation Panel When the operator of the crusher 1 wants to operate the feeder 4,
Operation panel 14, pendant 15, and foot switch 11
5 can be operated, but first, it is basically operated by the operation panel 14 or the pendant 15.

When it is desired to start the feeder 4 from the stopped state using the operation panel 14, when the feeder ON button 14b1 of the operation panel 14 is pressed, the contact 106 for starting the feeder is closed only during the pressing in FIG. As a result, the relay coil units R5 and R6 are excited. Relay coil part R5
, The relay contact portion R5 'becomes conductive, and the solenoid SOL3 provided in the solenoid valve 21a of the feeder control valve 21 is excited. At this time, since the relay contact portion R6 'is turned on by the excitation of the relay coil portion R6, even if the operator once presses and releases the feeder ON button 14b1, the relay coil portions R5 and R6 are continuously excited, and as a result, the solenoid is released. SOL3 maintains the excited state.
As a result, the control valve 21 is switched to the right side position in FIG. 1 and the pressure oil from the hydraulic pump 18a is guided to and driven by the hydraulic motor 19 for the feeder. When the feeder 4 is to be stopped from the driving state as described above, when the feeder OFF button 14b2 is pressed, the feeder stop contact 107 is opened only while the feeder 4 is being pressed, and the current to the relay coil portions R5 and R6 is reduced. Shut off and they return to the de-energized state. When the relay coil portion R5 returns to the non-excited state, the relay contact portion R5 'opens, and the solenoid provided in the solenoid valve 21a of the control valve 21
The drive current to SOL3 is cut off. Also, the relay coil part R
As the relay 6 returns to the non-excited state, the relay contact portion R6 'is cut off, so that the non-excited state of the relay coil portions R5 and R6 is maintained even if the operator once presses and releases the feeder OFF button 14b2. As a result, the solenoid SOL3 maintains the non-excited state, the control valve 21 returns to the left position in FIG. 1, shuts off the pressure oil guided from the hydraulic pump 18a to the feeder hydraulic motor 19, and stops driving. .

(4) Operation of Feeder Using Pendant When it is desired to start the feeder 4 from a stopped state using the pendant 15, the remote switch 14 of the operation panel 14
When the feeder ON button 15b1 of the pendant 15 is pressed after j has been turned on in advance, the feeder activation contact 110 is closed only while the button is pressed, as in (3) above.
As a result, the relay coil portion R9 is excited and the relay contact portion R9 'is turned on. Thereby, regardless of the operation of the operation panel 14, the relay coil portions R5 and R6 are excited and the relay contact portion R5' is turned on. Thus, the solenoid SOL3 of the solenoid valve 21a of the feeder control valve 21 is excited.
At this time, as described in the above (3), the relay coil unit R
By the action of 6, even if the operator releases the feeder ON button 15b1, the solenoid SOL3 maintains the excited state, and the pressure oil from the hydraulic pump 18a is guided to the feeder hydraulic motor 19 to be driven. To stop the feeder 4 from the driving state, the feeder OFF button 1 of the pendant 15
When 5b2 is pressed, the contact 111 for stopping the feeder opens and the relay coil portion R is opened only while the button 5b2 is being pressed.
The current to 5, R6 is cut off and returns to the non-excited state, the relay contact portion R5 'is opened, and the drive current to the solenoid SOL3 is cut off. As a result, the pressure oil guided from the hydraulic pump 18a to the feeder hydraulic motor 19 is shut off to stop driving.

(5) Operation of Feeder by Foot Switch On the other hand, when the feeder 4 is driven by the operation of the operation panel 14 or the pendant 15 as described above, the feeder is operated by the foot switch 115b in the operator seat 53 of the excavator. 4 can be stopped. That is,
When the operator of the excavator 50 steps on the foot switch 15b while the feeder 4 is being driven, only while the foot switch 15b is being depressed,
The operation signal is output as a drive signal from the determination circuit 120 to the feeder stop contact 122 via the amplifier 116, the transmitter 118, and the receiver 119, and the contact 122 is opened. Thereby, the solenoid valve 2 of the control valve 21
The drive current to the solenoid SOL3 of 1a is cut off, and the control valve 21 returns to the left side position in FIG. 1 in FIG. 1, shuts off the pressure oil guided from the hydraulic pump 18a to the feeder hydraulic motor 19, and stops driving. . afterwards,
When the feeder 4 is stopped, the operator operates the foot switch 1.
When the foot is released from the contact 15b, the contact 122 returns to the closed state again, so that the supply of the drive current to the solenoid SOL3 is resumed, the control valve 21 is switched to the right position in FIG. 1 again, and the hydraulic pressure for the feeder is changed from the hydraulic pump 18a. The supply of pressure oil to the motor 19 is restarted, and the hydraulic motor 19 is restarted. Thus, once the operation panel 14 or the pendant 15
Then, the feeder 4 can be stopped and restarted at any time by the foot switch 115b.

(6) Emergency stop operation using the operation panel, pendant, and foot switch While driving each device of the crusher 1, an emergency such as a supply abnormality occurs, and the operator wants to stop all the devices. In this case, it can be operated with the operation panel 14, the pendant 15, and the foot switch 115a. First, in the operation panel 14, when the emergency stop button 14k is pressed, the emergency stop contact 108 is opened only while the button 14k is pressed, and the bus 101 on the power supply side that supplies DC 24V is cut off. Thus, a solenoid SOL1 provided in the electromagnetic valve 22a1 for crusher normal rotation, a solenoid SOL2 provided in the electromagnetic valve 22a2 for crusher reverse rotation, and a control valve 21 for the feeder are provided.
Including the solenoid SOL3 provided in the solenoid valve 21a, the drive current to the solenoid of the control valve for driving all devices can be cut off, so that all devices can be stopped quickly. As is clear from the above description, the operator once pushes the emergency stop button 14k and then releases his / her hand to release the emergency stop contact 10
8 becomes conductive, the relay contacts R1 ', R3',
Since R5 'and the like are in the non-excited state, each device is not restarted as it is, but is maintained in the stopped state.

The emergency stop button 1 of the pendant 15
5a has the same function as the emergency stop button 14k of the operation panel 14, so that the same operation as described above can be performed. That is, the remote switch 1 of the operation panel 14
4j, the operator can set the emergency stop button 15
By pressing a, the emergency stop contact 1 only while pressing
When 09 is opened and the bus 101 is cut off, the drive current to the solenoids including the solenoids SOL1 to SOL3 and driving all devices can be cut off, and all the devices can be stopped quickly. Thereafter, even if the operator releases the hand from the emergency stop button 15a, each device is not restarted as it is, but is kept stopped.

Further, the emergency stop operation can be performed by the foot switch 115a in the hydraulic shovel driver seat 53. That is, when the operator of the excavator 50 steps on the foot switch 15a, the operation signal is transmitted to the amplifier 116, the transmitter 118, and the receiver 11 only during the step.
9, a drive signal is output from the determination circuit 120 to the emergency stop contact 121, and the contact 121 is opened. As a result, the bus 101 is cut off, the drive current to the solenoid driving all the devices is cut off, and all the devices are quickly stopped.

As described above, according to the embodiment of the present invention, the emergency stop and the feeder stop of the operation of each device mounted on the crusher 1 are performed in the operation seat 53 of the hydraulic shovel 50. Foot switch 1 placed on the floor
Since the operation can be performed with the 15a and the foot switch 115b, the operations can be performed without releasing the operation levers 55a and 55b (see FIG. 7) of the excavator 5. Therefore, the operation of the excavator 1 can be performed while the operation of the excavator 5 is continued, so that the operating lever of the excavator must be released during the operation of the excavator as disclosed in JP-A-8-155326. The operability can be greatly improved as compared with a structure that does not have to be.
Furthermore, in the structure of the above publication, during an emergency stop of the crusher equipment, after releasing the operating lever of the hydraulic shovel, the hand must be moved to the button / switch or the like of the crusher operating unit beside the seat. However, according to the present embodiment, the hydraulic excavator 5
Even during the single operation of “0”, the above operation relating to the crusher 1 can be immediately performed with the foot as it is, so that the operation quickness can be improved.

In the above description, of the operation functions of the operation panel 14, the foot switch 115a having the same function as the emergency stop button 14k, the feeder ON button 14
Although two foot switches 115b having the same functions as the b1 and the feeder OFF button 14b2 are arranged on the floor of the hydraulic shovel driver's seat 53, in addition to or instead of these, the crusher normal rotation button 14a1, Crusher reverse button 14a2 and crusher stop button 1
Three foot switches each having the same function as 4a3 may be provided. In this case, jaw crusher 3
Can be rotated forward / reverse / stop by remote control from within the excavator 50 without manual operation.

Next, another embodiment of the present invention will be described with reference to FIG. In the present embodiment, a controller 200 including a computer is provided as control means instead of the operation circuit device 100 in the above-described embodiment of the present invention.

FIG. 8 is a hydraulic circuit diagram and a communication system diagram showing a main structure of a hydraulic drive device provided in another embodiment of the present invention, and is a diagram in the above-described embodiment of the present invention. FIG. In FIG. 8,
1 are the same as those in FIG.

In FIG. 8, the operation panel 14 includes buttons and switches for starting and stopping each device (a crusher normal rotation button 14a1, a crusher reverse rotation button 14a2, a crusher stop button 14a3, a feeder ON button 14).
b1, feeder OFF button 14b2, emergency stop button 1
4k) is input to the controller 200. Similarly, the pendant 15 has buttons (emergency stop button 15a, feeder ON button 15b1, feeder OFF button 15b) related to start and stop of each device.
2. Operation signals corresponding to the crusher normal rotation button 15c1, the crusher reverse rotation button 15c2, and the crusher stop button 15c3) are input to the controller 200. Further, the foot switches 115a and 115b also output operation signals indicating whether the operator is stepping on the foot or releasing the foot from the amplifier 116, the transmitter 118, and the receiver 1 respectively.
19 to the controller 200. The controller 200 sends an ON signal or an OFF signal as a drive signal based on the operation signal from the operation panel 14, the operation signal from the pendant 15, or the operation signal from the foot switches 115a and 115b, to the control valve 21 and the control valve. The signals are output to the solenoid valve 21a and the solenoid valves 22a1, 22a2, etc., respectively provided in the apparatus 22. If the drive signal from the controller 200 is an ON signal, the solenoid of the solenoid valve 21a and the solenoid valves 22a1 and 22a2 is excited so that the spools of the control valve 21 and the control valve 22 are driven.

That is, the feeder control valve 21 is switched to the right position in FIG. 8 when an ON drive signal is input to the solenoid of the solenoid valve 21a, and guides the pressure oil from the hydraulic pump 18a to the feeder hydraulic motor 19. Drive this. When the drive signal to the solenoid of the solenoid valve 21a becomes an OFF signal, the spring 21c returns to the left position in FIG. 8 by the restoring force and stops the feeder hydraulic motor 19. When the drive current is input to the solenoid of the solenoid valve 22a1 (or solenoid valve 22a2), the crusher control valve 22 is switched to the left position (or the right position) in FIG. 8, and the pressure oil from the hydraulic pump 18b is used for the crusher. It is guided to the hydraulic motor 20 and is driven in the forward rotation direction (or the reverse rotation direction). When the drive signal to the solenoid of the solenoid valve 22a1 (or the solenoid valve 22a2) becomes an OFF signal, the spring 22c2 (or the spring 22c1) returns to the neutral position by the restoring force, and the crusher hydraulic motor 20 is stopped.

Although not shown in the figure, other devices, that is, hydraulic actuators for driving the conveyor 5 and the magnetic separator 6 are also provided with control valves similar to the control valves 21 and 22.
a or hydraulic oil from the hydraulic pump 18b.
Similarly to the control valves 21 and 22, the solenoids provided on the control valves are also provided with the operation panel 14.
An ON drive signal or an OFF drive signal is input from the controller 200 in response to the operation.

Next, the operation of the crusher according to another embodiment of the present invention will be described. (1) Operation of the jaw crusher by the operation panel When it is desired to start the jaw crusher 3 in the normal rotation direction from the state where the jaw crusher 3 is stopped by the operation panel 14, when the crusher normal rotation button 14a1 of the operation panel 14 is pressed, the operation corresponding thereto A signal is input from the operation panel 14 to the controller 200,
The controller 200 is a solenoid valve 22a for crusher normal rotation.
An ON drive signal is output to the solenoid provided in 1 and an OFF drive signal is output to the solenoid provided in the crusher reverse solenoid valve 22a2. As a result, the control valve 22 is switched to the left side position in FIG. 8, and the pressure oil from the hydraulic pump 18b is guided to the crusher hydraulic motor 20 to drive the crusher hydraulic motor 20 in the normal rotation direction. When it is desired to start the jaw crusher 3 in the reverse direction from the stopped state, when the crusher reverse rotation button 14a2 is pressed, the controller 200 outputs an ON drive signal to the electromagnetic valve 22a2 for crusher reverse rotation in response to this, and the crusher corrector is operated. An OFF drive signal is output to the diverting electromagnetic valve 22a1. As a result, the control valve 22 is switched to the right side position in FIG. 8, and the crusher hydraulic motor 20 is driven in the reverse direction. Jaw crusher 3 as described above
When the user wants to stop from the state of driving in the normal rotation direction (or the reverse rotation direction), when the crusher stop button 14a3 is pressed, the controller 200 responds to this and the controller 200 causes the solenoid valve 22a1 for crusher normal rotation and the solenoid valve for crusher reverse rotation to operate. 22
The OFF drive signal is output to both a2. This allows
In FIG. 8, the control valve 22 includes a spring 22c2.
(Or the spring 22c1) returns to the neutral position by the restoring force, shuts off the pressure oil guided from the hydraulic pump 18b to the crusher hydraulic motor 20, and stops driving the crusher hydraulic motor 20.

(2) Operation of the jaw crusher by the pendant When it is desired to start the jaw crusher 3 in the normal rotation direction (reverse rotation direction) from the stopped state using the pendant 15, similarly to the above (1), the crusher normal rotation is performed. Button 15c1
When (or the crusher reverse rotation button 15c2) is pressed, an operation signal corresponding thereto is input to the controller 200, and the controller 200 transmits the crusher forward rotation electromagnetic valve 22a1.
(Or the solenoid valve 22a2 for crusher reverse rotation) outputs an ON drive signal to the solenoid provided on the solenoid valve 22a2 for crusher reverse rotation (or the solenoid valve 22a1 for crusher reverse rotation), and outputs the OFF drive signal to the solenoid provided on the solenoid valve 22a1 for crusher reverse rotation. I do. Thereby, the control valve 2
2 is switched to the left position (or right position) in FIG.
The pressure oil from the hydraulic pump 18b is guided to the crusher hydraulic motor 20, and the crusher hydraulic motor 20 is driven in the forward direction (or the reverse direction). To stop the jaw crusher 3 from being driven in the normal rotation direction (or the reverse rotation direction) as described above, the crusher stop button 1
When 5c3 is pressed, the controller 200 outputs an OFF drive signal to both the crusher forward rotation solenoid valve 22a1 and the crusher reverse rotation solenoid valve 22a2 in response to this.
As a result, the control valve 22 is connected to the spring 22c2.
(Or the spring 22c1) returns to the neutral position, the pressure oil from the hydraulic pump 18b is shut off, and the drive of the crusher hydraulic motor 20 is stopped.

(3) Operation of the feeder by the operation panel When it is desired to start the feeder 4 by stopping the feeder 4 by operating the operation panel 14, when the feeder ON button 14 b 1 of the operation panel 14 is pressed, an operation signal corresponding thereto is generated. Operation panel 1
4 is input to the controller 200 and the controller 2
00 is the solenoid valve 2 of the feeder control valve 21
An ON drive signal is output to the solenoid provided in 1a. As a result, the control valve 21 shown in FIG.
Is switched to the right side position in the figure, and the hydraulic oil from the hydraulic pump 18a is guided to the feeder hydraulic motor 19 to drive it. To stop the feeder 4 from being driven as described above, the feeder OFF button 14b2
When the is pressed, the controller 200 outputs an OFF drive signal to a solenoid provided in the solenoid valve 21a of the feeder control valve 21 in response to this. This allows
The control valve 21 returns to the left position in FIG. 8, and shuts off the pressure oil guided from the hydraulic pump 18a to the feeder hydraulic motor 19 to stop driving.

(4) Operation of feeder by pendant When it is desired to start the feeder 4 by stopping the feeder 4 by operating the pendant 15, the remote switch 14j of the operation panel 14 is turned on in advance, and then the feeder ON button 15b1 is pressed. As in (3) above, an operation signal corresponding to this is transmitted from the pendant 15 to the controller 20.
0, the controller 200 outputs an ON drive signal to the solenoid valve 21a of the control valve 21 for the feeder, whereby the control valve 21 is switched to the right position in FIG. 8, and the pressure oil from the hydraulic pump 18a is used for the feeder. It is guided by the hydraulic motor 19 and drives it. When it is desired to stop the feeder 4 from the driving state, when the feeder OFF button 15b2 of the pendant 15 is pressed, the controller 200 outputs an OFF drive signal to the solenoid valve 21a of the feeder control valve 21 in response to this, and the control valve 21 Returns to the left position in FIG. 8 and stops the drive of the feeder hydraulic motor 19.

(5) Operation of Feeder by Foot Switch On the other hand, as described above, the operation of the operation panel 14 or the pendant 15 causes the feeder 4 to be driven (ie, an ON drive signal is output to the solenoid valve 21a of the control valve 21). In this state, when the operator of the excavator 50 steps on the foot switch 115b, the controller 200 outputs an OFF drive signal to the solenoid of the solenoid valve 21a of the control valve 21 only while the operator is stepping on the foot switch 115b. As a result, the control valve 21 returns to the left side position in FIG. 8, shuts off the pressure oil guided to the feeder hydraulic motor 19, and stops driving. Thereafter, when the foot is released from the foot switch 115b in such a stopped state of the feeder 4, the controller 200 outputs an ON drive signal again to the solenoid of the solenoid valve 21a of the control valve 21. As a result, the control valve 21
Is switched to the right position in FIG. 8, the supply of the hydraulic oil to the hydraulic motor 19 for the feeder is restarted, and the hydraulic motor 19 is restarted. Thus, once the operation panel 14 or the pendant 15
Then, the feeder 4 can be stopped and restarted at any time by the foot switch 115b.

(6) Emergency stop operation using the operation panel, pendant, and foot switch If an emergency occurs during operation of each device of the crusher 1 and the operator wants to emergency stop all the devices, the operation panel 14 When the emergency stop button 14k is pressed, an operation signal corresponding thereto is input from the operation panel 14 to the controller 200, and the controller 200 turns OFF the solenoids provided in the control valves corresponding to all devices including the control valves 21 and 22. Output drive signal. As a result, all the control valves including the crusher control valve 22 and the feeder control valve 21 return to the neutral position, so that all the devices can be stopped quickly. At this time, even if the operator releases the hand after once pressing the emergency stop button 14k, the controller 200 turns off the control valves.
The drive signal is maintained. As a result, each device is not restarted as it is, but is maintained in a stopped state. Also, the emergency stop button 15a of the pendant 15
Has the same function as the emergency stop button 14k of the operation panel 14, so that the same operation as described above can be performed. That is, the remote switch 14j of the operation panel 14
Is turned on, the operator presses the emergency stop button 15a of the pendant 15 so that the controller 200 outputs an OFF drive signal to the control valves corresponding to all devices only while the operator presses the emergency stop button 15a. Can be stopped. At this time, similarly to the above, the controller 200 maintains each device in a stopped state even if the operator once releases the hand after pressing the emergency stop button 15a.

Further, an emergency stop operation can be performed by the foot switch 115a in the hydraulic shovel driver's seat 53. That is, when the operator of the excavator 50 steps on the foot switch 115a, the controller 200 outputs an OFF drive signal to the solenoids of all the control valves including the control valves 21 and 22, and returns all the control valves to the neutral positions. To stop all devices quickly. At this time, the controller 200 keeps each device stopped even if the operator releases the foot after stepping on the foot switch 115a once.

According to the other embodiment of the present invention described above, the effect that operability and operability can be improved as in the above-described embodiment of the present invention can be obtained. In this embodiment, as described in the embodiment of the present invention, the crusher normal rotation button 14a of the operation panel 14 is added.
1. Three foot switches each having the same function as the crusher reverse button 14a2 and the crusher stop button 14a3 may be provided.

In one embodiment of the present invention and another embodiment of the present invention, the control valves 21 and 22 are provided.
Although the electromagnetic switching valves are used as the electromagnetic valves 21a, 22a1, 22a2, if a proportional electromagnetic valve is used instead and a volume pedal is used instead of the foot switch 115b or the like, the speed with respect to the feeder 4 and the jaw crusher 3 can be increased. Instructions are also possible. At this time, the proportional solenoid valve 21a and the proportional solenoid valves 22a1 and 22a2 are driven by a drive current (either the operation circuit device 100 reduces DC 24V to a value corresponding to the depression amount of the volume pedal, or the controller 200 sends the depression amount of the volume pedal). Is output, the spools of the control valve 21 and the control valve 22 are driven according to the drive current value. That is, the feeder control valve 21 is switched to the left in FIG. 1 or 8 in accordance with the drive current value, and communicates the pressure oil supply pipe 24 with an opening corresponding to the switching amount. Thus, the feeder hydraulic motor 19 can be driven at a speed corresponding to the depression amount of the volume pedal. In addition, the crusher control valve 22 is provided in FIG.
It is switched in the middle right direction (or left direction), the pressure oil supply pipe 25 is communicated with an opening corresponding to the switching amount, and the crusher hydraulic motor 20 is rotated in the forward direction at a speed corresponding to the depression amount of the volume pedal. (Or in the reverse direction). In these cases, more detailed operation of speed control can be performed by the foot pedal.

Further, in the above-described embodiment and other embodiments of the present invention, when the feeder 4 is operated by the foot switch 115b, the feeder 4 is already activated by the operation of the operation panel 14 or the pendant 15. Although the operation of the feeder 4 is stopped only while the foot switch 115b is being depressed, the present invention is not limited to this. That is, conversely, the feeder 4 may be driven only while the foot switch 115b is being depressed on the assumption that the feeder 4 is stopped. Further, as in the case where three foot switches are provided for the jaw crusher 3 additionally described in the embodiment of the present invention, two foot switches (for starting and stopping) are provided for the feeder 4, and the operation panel 14 and the operation panel 14 are provided. Regardless of the operation on the pendant 15, the start and stop of the feeder 4 may be operable with these two foot switches. The operation of the foot switch on the jaw crusher 3 is stopped (or forward / reverse rotation) only while the foot switch is depressed, assuming that the operation is already started (or stopped) by operating the operation panel 14 or the pendant 15. ). Further, the present invention is not limited to the feeder 4 and the jaw crusher 3, but may be provided with a foot switch corresponding to another device, for example, the conveyor 5 or the magnetic separator 6, to perform any of the operation modes described above. It goes without saying that it is good.

In one embodiment of the present invention and another embodiment of the present invention, in order to improve the operability and quickness of operation of the crusher equipment related to the operation of the hydraulic excavator 50, the remote control means is used. Foot switch 115a,
Although 115b is provided on the floor surface of the excavator operator's seat 53, the invention is not limited to this. As shown by imaginary lines (two-dot chain lines) in FIG. 7, for example, an ON switch having the same function as the foot switches 115a and 115b is provided.・ OFF switch 56a, 5
6b may be attached to the operation levers 55a and 55b, respectively. In this case, a similar effect is obtained.

Furthermore, in the above-described embodiment and other embodiments of the present invention, a self-propelled crusher has been described as an example. However, the present invention is not limited to this, and the present invention may be applied to a non-self-propelled crusher. May be applied. Further, in the above description, the crusher provided with the jaw crusher 3 is described as an example of the crusher, but the crusher is not limited to this. That is, another crushing device, for example, a crushing device (so-called shredder) that shears the crushed object by providing a cutter on a shaft arranged in parallel and rotating in opposite directions to each other, and a rotary crushing device (roll crusher) are provided. It is also applicable to shredders. In these cases, a similar effect is obtained.

Further, in the above-described embodiment and other embodiments of the present invention, a hydraulic excavator will be described as an example of a construction machine other than the crusher. However, the present invention is not limited thereto, and the crusher 1 may be remotely controlled from another construction machine that cooperates with the crusher 1 in the crushing operation, for example, a driver's seat such as a bulldozer or a wheel loader. Needless to say, in these cases, a similar effect is obtained.

[0069]

According to the present invention, a plurality of devices of the crusher can be installed without releasing the operation lever of the hydraulic shovel by providing the foot switch on the driver's seat floor of the hydraulic shovel or operating the operating lever. Can be operated.
Therefore, a plurality of devices of the crusher can be operated while the operation of the hydraulic excavator is continued, so that operability can be improved. Further, since a plurality of devices of the crusher can be operated immediately from the single operation of the hydraulic excavator, the operation speed can be improved.

[Brief description of the drawings]

FIG. 1 is a hydraulic circuit diagram and a communication system diagram showing a main structure of a hydraulic drive device of a crusher provided in an embodiment of the present invention.

FIG. 2 is a side view showing the entire structure of a self-propelled crusher to be subjected to a crushing control system according to one embodiment of the present invention.

FIG. 3 is a top view illustrating the entire structure of a self-propelled crusher to which the crush control system according to the embodiment of the present invention is applied.

FIG. 4 is a diagram illustrating an example of an operation state during a crushing operation of the crushing control system according to the embodiment of the present invention.

FIG. 5 is a diagram showing an example of a structure of a crusher operation panel provided in one embodiment of the present invention.

FIG. 6 is an electric circuit diagram showing an example of a structure related to a jaw crusher and a feeder in the operation circuit device of the crusher provided in one embodiment of the present invention.

FIG. 7 is a diagram showing an arrangement state of a foot switch in a hydraulic shovel cab provided in an embodiment of the present invention.

FIG. 8 is a hydraulic circuit diagram and a communication system diagram showing a main structure of a hydraulic drive device of a crusher provided in another embodiment of the present invention.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 Crusher 2 Hopper 3 Jaw crusher (crushing apparatus and equipment) 4 Feeder (auxiliary machine and equipment) 5 Conveyor (auxiliary machine and equipment) 6 Magnetic separator (auxiliary machine and equipment) 19 Hydraulic motor for feeder (hydraulic actuator) 20 Crusher Hydraulic motor (hydraulic actuator) 50 hydraulic excavator (construction machine other than crusher) 53 driver's seat 55a, b operating lever 56a, b ON / OFF switch (remote operating means) 100 operating circuit device (control means) 115a, b Foot switch (remote control means) 118 Transmitter (transmitting means) 119 Receiver (receiving means) 200 Controller (control means)

 ──────────────────────────────────────────────────の Continued on the front page (72) Inventor Tadashi Shiohata 650, Kandamachi, Tsuchiura-shi, Ibaraki Pref.Hitachi Construction Machinery Co., Ltd. (72) Inventor Tadashi Shinooka 650, Kandamachi, Tsuchiura-shi, Ibaraki Hitachi Construction Machinery F-term in Tsuchiura Plant (reference) 4D067 DD04 DD06 FF01 FF11 GA02 GA06 GA20 GB10

Claims (4)

[Claims] 1. A plurality of devices including a crushing device for crushing an object to be crushed introduced from a hopper, an auxiliary machine for performing work related to crushing work by the crushing device, and a plurality of devices for respectively driving the plurality of devices. A crusher control system for a crusher that controls a crusher having a hydraulic actuator, wherein the crushing device transmits an operation signal of a remote control unit provided outside the crusher from a transmission unit provided outside the crusher. In a crusher crushing control system in which the control means provided in the crusher controls the plurality of hydraulic actuators based on a signal received by the receiving means provided in the crusher, A crushing control system for a crusher, comprising a foot switch that can be operated by a foot. 2. A crushing control system for a crusher according to claim 1, wherein said remote control means and said transmission means are provided on a construction machine other than said crusher, and said foot of said remote control means. A crushing control system for a crusher, wherein the switch is provided on a floor of a driver's seat of the construction machine. 3. A plurality of devices including a crushing device for crushing an object to be crushed introduced from a hopper, and auxiliary machines for performing operations related to the crushing operation by the crushing device, and a plurality of devices for respectively driving the plurality of operations. A crusher control system for a crusher that controls a crusher having a hydraulic actuator, wherein the crushing device transmits an operation signal of a remote control unit provided outside the crusher from a transmission unit provided outside the crusher. In the crusher control system of the crusher in which the control means controls the plurality of hydraulic actuators based on the received signal, the remote control means is provided for a construction machine other than the crusher. A crushing control system for a crusher, wherein the crushing control system is attached to an operation lever for operating the construction machine. 4. A crushing control system for a crushing machine according to claim 1, wherein said plurality of devices of said crushing machine include a feeder for supplying said crushed material put into said hopper to said crushing device. A crushing control system for a crusher, characterized in that: