JP2003170080A - Self-propelling crusher - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a self-propelling crusher, by which a worker can save time for keeping his eye on crushing equipment until completion of the operation after charging a to-be-crushed material into the crushing equipment, and improve his working efficiency. <P>SOLUTION: This self-propelling crusher is provided with a pressure sensor 53 for detecting a load pressure on an oil-hydraulic motor 9 for driving the crushing equipment 2, a drive-indication controller 41a for automatically stop the driving of the motor 9 in response to a load-pressure detection value P<SB>cr</SB>, and a control valve 24 for the crushing equipment. Alternatively, the self-propelling crusher is provided with the drive-indication controller 41a which counts time for driving the oil-hydraulic motor 9, and automatically stops the driving of the motor 9 at a point in time when it is driven for a predetermined time, and the control valve 24 for the crushing equipment. <P>COPYRIGHT: (C)2003,JPO

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a self-propelled crusher equipped with a crushing device for crushing an object to be crushed, for example, an automatic crusher equipped with a shearing type crusher for thinly cutting the object to be crushed. It concerns a traveling crusher.

[0002]

2. Description of the Related Art In recent years, a self-propelled crusher that crushes crushed objects with a crushing device under the background of promoting the reuse of waste such as enforcement of the Recycling Resource Promotion Law (so-called recycling law) (October 1991). The field of activity of is expanding. At this time, several types of crushing devices have already been proposed,
As particularly suitable for crushing construction waste materials, household electric appliances, plastic waste materials, old tires, etc., for example, as described in Utility Model Registration No. 2604492, each of a plurality of rotating shafts arranged substantially parallel to each other. Fix the rotating teeth,
A self-propelled crusher equipped with a shear-type crushing device (such as a biaxial shearing machine including a so-called shredder) that shears the object to be crushed into thin pieces has been proposed. At this time, in particular, in this conventional technique, an open type hopper is provided above the crushing device in order to receive and temporarily store the object to be crushed and to suppress scattering of the crushed pieces.

Then, for example, the crushed material thrown into the hopper above the self-propelled crusher by a grapple (a hydraulic shovel having an attachment for holding the crushed material attached to the tip thereof) is used as a crushing device below the hopper. After being crushed to a predetermined size by this crushing device, the crushed material falls on the conveyor below the crushing device and is transported by this conveyor, and finally below the discharge side end of the conveyor. It falls and is loaded.

[0004]

In recent years, under the above-mentioned momentum of promoting recycling, a smaller-scale crushed material generation site,
For example, even in factories, supermarkets, construction sites in urban areas, construction sites, etc., the self-propelled crusher is actively introduced, and papers including corrugated cardboard, paper waste, etc. are installed on the site,
Household waste including textile waste and general waste such as combustible materials such as plastics and household appliances and furniture, as well as waste plastics including defective products of our own products / covers / packaging of equipment, for formwork Abandoned plywood, waste pallets,
The movement to crush industrial waste including industrial waste such as wood chips and wood chips including pruning materials, waste vinyl used for interiors and sashes, metal scraps, construction waste materials, and animal carcasses has become active. There is.

At such a site, since the amount of crushed material generated is relatively small and the allowable cost budget is small, for example, a self-propelled crusher having a total weight of about 10 tons, which is smaller than before, is used. It is being sought after. Also, leasing of construction machinery is generally more popular than before, but in recent years,
A self-propelled shredder is also being leased as one of the recycling machines. Since the use by leasing is when there is not enough crushed material to generate as a machine for exclusive use by the company, similar to the above, a smaller self-propelled crusher than before will be required.

[0006] Here, in consideration of the use at the above-mentioned site, in such a small self-propelled crusher, instead of using a heavy machine to load the crushed object as in the previous one, a human (loading) is used. There is a demand for a configuration in which a worker can directly (for example, manually) insert the crushed object manually.

Here, as described above, in the case of using a large heavy equipment such as a hydraulic excavator to load the crushed material,
There is a dedicated operator for the self-propelled crusher, or else the operator of the hydraulic excavator is always near the self-propelled crusher and in any case at least one person is self-propelled. It is in a state where it is engaged in the crushing work of the automatic crusher or the work of loading the crushed material into the self-propelled crusher.

[0008] On the other hand, as described above, in the case where household waste or business waste is directly put into a site such as a factory or a supermarket by human power and is crushed by a small self-propelled crusher, a dedicated worker is required. There is no operator or input worker, and the crushed object feeder who came from his / her own workplace in the site must start the crushing device and throw in the crushed object. In such a case, the person to be crushed will wait by the self-propelled crusher until the crushing is completed,
After notifying the completion of the crushing, the crushing device will be stopped, and then the worker will return to his / her own workplace. Thus, as a result of requiring a certain amount of monitoring time each time the crushed material is input, during that time the inserter will be away from their original work site,
Workability in the original work may be reduced.

The present invention has been made on the basis of the above matters, and an object thereof is to provide a self-propelled crusher capable of reducing the monitoring time after charging a crushed object and improving workability. is there.

[0010]

(1) In order to achieve the above object, a self-propelled crusher of the present invention comprises a frame, a traveling means provided on the frame, and a crushing device provided on the frame. Load detecting means for detecting a load of a crushing device hydraulic motor for driving the crushing device, and first stop control means for automatically stopping the driving of the crushing device hydraulic motor in accordance with a detection value of the load detecting means. With.

In the present invention, the load detecting means detects the load of the hydraulic motor for the crushing device, and the first stop control means automatically stops the driving of the hydraulic motor for the crushing device according to the detected value. Accordingly, for example, when the crushing operation of the crushed object is completed and the load of the crushing device hydraulic motor is reduced, the driving of the crushing device hydraulic motor can be automatically stopped. Therefore, even when crushing is performed by direct input by human power, the person who inputs the crushed object does not have to wait for completion of crushing, and immediately returns to his / her own work place with the self-propelled crusher performing crushing work. It becomes possible. In this way, the monitoring time required each time the crushed material is added is not required, and the workability in the original work can be improved.

(2) In order to achieve the above object, and in the self-propelled crusher of the present invention, the frame, the traveling means provided on the frame, the crushing device provided on the frame, and the crushing device A timer means for detecting time information relating to the operating time and a second stop control means for automatically stopping the driving of the hydraulic motor for the crushing device according to the detected value of the timer means are provided.

In the present invention, the timer means detects the time information relating to the operation time of the crushing device, and the second stop control means automatically stops the driving of the crushing device hydraulic motor according to the detected value. Thus, for example, after the crushing device is activated, the drive of the hydraulic motor for the crushing device can be automatically stopped when a time sufficient to complete the crushing operation of the normal crushed object has elapsed. Therefore, as in the case of (1) above, even when the crushing is performed by direct input by human power, the person to be crushed does not need to notify the completion of the crushing, and the monitoring time is not required. As a result, the workability in the original work is improved. Can be improved.

(3) In the above (1) or (2), preferably, the first or second stop control means controls the flow of pressure oil from the hydraulic pump to the hydraulic motor for the crushing device. Valve control means for outputting a drive signal for switching the device control valve.

(4) In the above (1) or (2), and preferably, the first or second stop control means drives a hydraulic pump for discharging pressure oil to the hydraulic motor for the crushing device. An injection control means for controlling fuel injection into the engine is provided.

(5) In the above (3), more preferably, a restart control means for restarting the hydraulic motor for the crushing device stopped by the first or second stop control means under a predetermined condition. Prepare

(6) In the above item (5), more preferably, the object to be crushed is charged into the crushing device or is prepared for charging.
Alternatively, the crushing device is provided with a closing detection means for detecting the presence of a thrower or a throwing machine, and the restart control means is stopped by the first or second stop control means according to the detection result of the closing detection means. Restart the device hydraulic motor.

[0018]

BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of a self-propelled crusher of the present invention will be described below with reference to the drawings.

FIG. 1 is a side view showing the overall structure of an embodiment of the self-propelled crusher of the present invention, and FIG. 2 is a top view of the self-propelled crusher shown in FIG. FIG. 3 is a front view seen from the direction A in FIG.

In these FIGS. 1 to 3, 1 is a hood provided above the crushing device 2 described below so as to cover the crushing device 2, and 2 is provided below the hood 1 and is crushed from the hood 1. A crushing device for crushing the substance into a predetermined size and discharging it downward (in this example, a biaxial shredder as will be described later) 3 introduces and conveys the crushed substance crushed by the crushing device 2 and discharged downward Conveyor for carrying out (discharging), 4
Is a magnetic separator provided above the conveyor 3 for magnetically attracting and removing magnetic substances (rebar etc.) contained in the crushed material being conveyed on the conveyor 3 (not shown in FIG. 2 for preventing complexity), Reference numeral 5 is a running body, and 6 is a power unit that functions as a power source.

The hood 1 is, for example, a domestic waste including general waste such as combustible materials, home electric appliances and furniture, and a business waste including industrial waste such as waste plastics, wood chips, metal scraps and construction waste materials. It has a substantially large-diameter curved tube shape having a charging port into which one or more (hereinafter simply referred to as “crushed object”) is charged on one side of a main body frame 17 described later. This facilitates, for example, manually inserting the crushed object from the front side of the self-propelled crusher (the right side in FIGS. 1 and 2 and the front side of the paper surface in FIG. 3).

As shown in FIG. 1, the crushing device 2 is a shearing type crushing device (so-called biaxial shearing machine or biaxial shredder) mounted near the front end of a main body frame device mounting portion 17A described later. In addition, a plurality of (two in this case) rotating shafts (not shown) having rotating teeth (cutters) 8 (see FIG. 3) attached at predetermined intervals in a comb-like shape via the spacers 7 (see FIG. 3) , Are arranged substantially parallel to each other and substantially horizontally so that the rotary teeth 8 are alternately meshed (adjacent rotary teeth 8 partially overlap each other in the radial direction). At this time, the axes of the rotary shafts are
Front and rear direction of the self-propelled crusher (direction perpendicular to the paper surface in FIG. 3,
1 and 2 in the left-right direction and the right-angled direction (the width direction of the self-propelled crusher, the left-right direction in FIG. 3, the direction perpendicular to the paper surface in FIG.
It is arranged so that it is in the middle up and down direction (so-called horizontal orientation). Then, by rotating the two rotary shafts in opposite directions, the crushed object received by the hood 1 is introduced and bites between the rotary teeth 8 and 8 so that the crushed object is bitten out. It is sheared into pieces and crushed to a specified size.

The driving force applied to the two rotary shafts is on the left side in the width direction (upper side in FIG. 2, right side in FIG. 3) of the crushing device 2 on the main body frame device mounting portion 17A described later.
It is given from the hydraulic motor 9 for the crushing device which is provided so as to project to the.

The conveyor 3 is provided so as to extend from the lower position of the crushing device 2 to the rear side of the self-propelled crusher, and the frames 10, 10 and the frames 10, 10.
Drive wheel 11a and driven wheel (idler) 11b supported between 10, conveyor belt 12 wound between drive wheel 11a and driven wheel 11b, and drive wheel 11a to drive the conveyor. And a conveyor hydraulic motor 13 that circulates and drives the belt 12. By this, the conveyor belt 12 is crushed by the crushing device 2.
The crushed material that has fallen up is carried out to the rear side of the self-propelled crusher.

The magnetic separator 4 is suspended and supported by a supporting member 14 provided so as to project rearward of a self-propelled crusher from a control valve device 28, which will be described later, and above the conveyor belt 12 and substantially orthogonal thereto. Magnetic separator belt 1 arranged to
5, a magnetic force generating means (not shown), and a magnetic motor 16 for a magnetic separator for driving the magnetic separator belt 15. In the magnetic separator 4, the magnetic separator belt 15 is driven around the magnetic force generating means (not shown) by the magnetic motor 16 for the magnetic separator so that the magnetic force from the magnetic force generating means acts over the magnetic separator belt 15. Then, after the magnetic substance is adsorbed to the magnetic separator belt 15, it is conveyed in a direction substantially orthogonal to the conveyor belt 12 and dropped to the side of the conveyor 3.

The traveling body 5 is provided with a main body frame 17 and left and right endless track crawler belts 18 as traveling means. The main body frame 17 includes a device mounting portion 17A for mounting the crushing device 2, the hood 1, and the like, and a track frame portion 17 provided below the device mounting portion 17A.
B, and a power unit mounting portion 17C provided on the equipment mounting portion 17A for mounting the power unit 6 thereon.
And a crusher mounting portion 17D.

The track frame portion 17B has left and right leg portions rotatably supporting a drive wheel 19a on the front side in the front-rear direction and a driven wheel (idler) 19b on the rear side in the front-rear direction of the self-propelled crusher. 17BL and 17BR (see FIG. 3) are provided. The crawler track 18 is bridged between the drive wheel 19a and the driven wheel 19b, and left / right traveling hydraulic motors 20L, 20 provided on the drive wheel 19a side.
Driving force is given by R to drive wheels 19a
It is circulated around the driven wheel 19b, and the self-propelled crusher is thereby driven.

The crusher mounting portion 17D has the power unit mounting portion 17C at the rear end of the self-propelled crusher.
The front part of the self-propelled crusher is fixed to the device mounting portion 17A, and the front part of the self-propelled crusher is obliquely arranged so that the front part of the self-propelled crusher is lowered. by this,
As shown in FIG. 1, the crushing device 2 is supported by being inclined from the horizontal plane so that the front side is lowered.

The power unit 6 includes the crushing device hydraulic motor 9, the conveyor hydraulic motor 13, the magnetic separator hydraulic motor 16, and the left / right traveling hydraulic motors 20L,
Hydraulic pumps 21A, 21B, 22 (see FIG. 5 described later) for discharging pressure oil to a hydraulic actuator such as 20R, and an engine 23 as a prime mover for driving the hydraulic pump,
A plurality of control valves (crusher control valve 24, left / right traveling control valves 27L, 2) that control the flow of the pressure oil supplied from the hydraulic pumps 21A, 21B, 22 to the hydraulic actuator, respectively.
7R (see later-described FIG. 5)) and a two-position switching valve (conveyor valve 25, magnetic selector valve 26 (see later-described FIG. 5)) and a control valve device 28.

Each device of the above power unit 6 is arranged on a power unit frame 6A (see FIG. 1) which is a basic lower structure of the power unit 6, and this power unit frame 6A is the main frame power unit mounting portion 17C. It is mounted on the top of.

The driver's seat 2 on the power unit 6
Reference numeral 9 denotes an operating means for switching the left / right traveling control valves 27L, 27R provided in the control valve device 28 to control the drive speed of the left / right traveling hydraulic motors 20L, 20R. For example, left / right operation levers 30La and 30Ra are provided.

An operation panel 31 and a ladder (step) 32 for moving up and down to the driver's seat 29 from the ground are provided on the lower right side of the power unit frame 6A.

FIG. 4 is a front view showing the surface of the operation panel 31. The operation panel 31 includes a meter section 33 including a fuel gauge and the like, a key switch 34 for starting the engine 23, and a "shredder normal rotation" for driving the crushing device 2 in the normal rotation / stop / reverse rotation. Button 35
a, "shredder stop" button 35b, "shredder reverse" button 35c, "conveyor start" button 36a, "conveyor stop" button 36b for starting and stopping the conveyor 3, and magnetic separator 4 are started and stopped. A "magnetic separator start" button 37a, a "magnetic separator stop" button 37b, and an operation selection switch 38 for selecting one of a "running" mode for running operation and a "crushing" mode for crushing work. Is equipped with.

Returning to FIG. 1 to FIG. 3, a signal indicating lamp 39 is provided upright at the right end of the power unit 6 on the front side of the self-propelled crusher, for example. The signal indicator lamp 39 has, for example, two display portions, that is, an upper display portion 39a and a lower display portion 39b, and is lit and displayed by being color-coded into easy-to-see colors such as red and green (details will be described later).

Here, the crushing device 2, the conveyor 3, the magnetic separator 4, and the traveling body 5 constitute a driven member driven by a hydraulic drive device provided in the self-propelled crusher of the present invention. . The detailed structure of this hydraulic drive system is shown in FIG.
Will be explained. FIG. 5 is a hydraulic circuit diagram showing the overall configuration of a hydraulic drive system in an embodiment of the self-propelled crusher of the present invention.

In FIG. 5, as described above, 23 is an engine, 21A and 21B are first and second variable displacement type hydraulic pumps driven by the engine 23, and 22 is similarly driven by the engine 23. Fixed displacement pilot pump, 9,20L, 20R, 1
3 and 16 are the first and second hydraulic pumps 21A and 2 respectively.
1B hydraulic oil motor for crushing device, hydraulic motor for left traveling, hydraulic motor for right traveling, hydraulic motor for conveyor, and hydraulic motor for magnetic separator, 24, 2
7L, 27R, 25 and 26 are the first and second, respectively.
From the hydraulic pumps 21A, 21B to the hydraulic motors 9, 2
Control valve for crushing device, left traveling control valve, right traveling control valve, conveyor valve, magnetic separator valve for controlling the flow (direction and flow rate) of pressure oil supplied to 0L, 20R, 13, 16 respectively. Is. Further, 30L and 30R are provided on the driver's seat 29, and the left and right traveling operation lever devices for switching the left traveling control valve 27L and the right traveling control valve 27R, respectively, and 31 are as described above. An operation panel provided on the lower right side of the power unit frame 6A, 39 is a signal indicator light standing on the power unit 6, 40 is a solenoid valve for traveling lock, and 41 is
The controller includes a drive / display controller 41a.

The first and second hydraulic pumps 21A, 21
B and the discharge lines 42A, 4 of the pilot pump 22
Relief valves 44A, 44B and 45 are provided in the pipelines 42Aa, 42Ba and 43a branched from 2B and 43, respectively, and the first and second hydraulic pumps 21A,
The value of the relief pressure for limiting the maximum value of the discharge pressure of 21B and the pilot pump 22 is set by the urging force of the springs 44Aa, 44Ba and 45a provided respectively.

The left traveling control valve 27L connected to the left traveling hydraulic motor 20L is a hydraulic pilot type three-position switching valve capable of controlling the direction and flow rate of pressure oil to the left traveling hydraulic motor 20L. The control valve 24 for the crushing device connected to the hydraulic motor 9 for the crushing device is a three-position electromagnetic switching valve capable of controlling the direction and flow rate of the pressure oil to the hydraulic motor 9 for the crushing device. There is.

These left running control valves 27L
The control valve 24 for the crushing device has the first
The pressure oil discharged from the hydraulic pump 21A is introduced, and this pressure oil is supplied to the left traveling hydraulic motor 20L and the crushing device hydraulic motor 9. These control valves 24, 27L are the left running control valve 27L and the crushing device control valve 24 from the upstream side in the center bypass line 42Ab connected to the discharge conduit 42A of the first hydraulic pump 21A. They are arranged in order.

Left-hand running control valve 27L
Is operated by the pilot pressure generated by the pilot pump 22 and reduced to a predetermined pressure by the left traveling operation lever device 30L including the left traveling operation lever 30La. That is, the left traveling operation lever device 3
0L is a pair of pressure reducing valves 30L that outputs the pilot pressure according to the left traveling operation lever 30La and the operation amount thereof.
b, 30 Lb. When the left traveling operation lever 30La of the left traveling operation lever device 30L is operated in the direction B in FIG. 5 (or the opposite direction, hereinafter the same in parentheses is the same), the pilot pressure causes the pilot conduit 46a (or 46b) to move. Via the control valve 2 for left driving
The 7L drive unit 27La (or 27Lb) guides the left traveling control valve 27L.
Middle switching position 27LA (or lower switching position 27L
B), the pressure oil from the first hydraulic pump 21A causes the discharge line 42A, the center bypass line 42Ab, the switching position 27LA of the left travel control valve 27L (or the lower switching position 27LB), Also, the hydraulic pressure is supplied to the left traveling hydraulic motor 20L via the forward rotation side pressure oil supply pipeline 47a (or the reverse rotation side pressure oil supply pipeline 47b), and the left traveling hydraulic motor 20L is driven in the forward direction (or reverse direction). To be done.

When the left traveling operation lever 30La is set to the neutral position shown in FIG. 5, the left traveling control valve 27L is returned to the neutral position 27LC shown in FIG. 5 by the urging force of the springs 27Lc and 27Ld, The left traveling hydraulic motor 20L is stopped.

The traveling lock solenoid valve 40 is connected to a conduit 43b branched from the discharge conduit 43 of the pilot pump 22. The travel lock solenoid valve 40 is switched by a drive signal St generated and output by the drive / display control unit 41a of the controller 41 (details will be described later). That is, the travel lock solenoid valve 40 is switched to the communication position 40A on the left side in FIG. 5 when the drive signal St input to the solenoid 40a is turned on, and the pilot pressure introduced through the pipe line 43b is introduced. It is guided to the left / right traveling operation lever devices 30R and 30L via a road 48, and the left traveling control lever 27La is operated to operate the left traveling control valve 27L and the right traveling operation lever 30Ra to be described later is used for the right traveling. Control valve 27R can be operated. On the other hand, when the drive signal St is turned off, the traveling lock solenoid valve 40 is shut off by the restoring force of the spring 40b, and the shut-off position 4 on the right side in FIG.
Returning to 0B, the pipe line 43b and the introduction pipe line 48 are shut off and the introduction pipe line 48 is communicated with the tank line 50 connected to the tank 49, and the pressure in the introduction pipe line 48 is adjusted to the tank pressure. Is almost equal to. As a result, the left / right traveling control levers 30L, 30R cannot operate the left / right traveling control valves 27L, 27R.

Control valve 24 for the crushing device
Is the drive / display controller 41 of the controller 41.
It can be switched by the forward rotation drive signal Scr1 or the reverse rotation drive signal Scr2 output from a. That is, the normal rotation drive signal Scr1 output to the solenoid drive unit 24a of the crusher control valve 24.
Is turned on and the reverse rotation drive signal Scr2 output to the solenoid drive unit 24b is turned off, the crusher control valve 24 is switched to the upper switching position 24A in FIG. Thereby, the first hydraulic pump 21A
Pressure oil from the discharge pipe line 42A, the center bypass line 42Ab, the left traveling control valve 2
7L is supplied to the crusher hydraulic motor 9 through the neutral position 27LC, the crusher control valve 24 switching position 24A, and the forward rotation side pressure oil supply pipeline 51a, and the crusher hydraulic motor 9 is forwarded. Driven in the direction.

At this time, the forward rotation side pressure oil supply pipe 5
A pressure sensor 53 is connected to a pressure guiding tube 52 branched from 1a. The pressure sensor 53 detects the load pressure (supply pressure) of the crusher hydraulic motor 9 and outputs it as a load pressure signal Pcr to the drive / display controller 41a (drive / display controller 41a). The details of the control will be described later).

On the other hand, the normal rotation drive signal Scr1 output to the solenoid drive section 24a of the crusher control valve 24 is OFF, and the solenoid drive section 24b.
When the reverse rotation drive signal Scr2 output to is turned on, the crusher control valve 24 is switched to the lower switching position 24B in FIG. As a result, the pressure oil from the first hydraulic pump 21A is supplied to the crusher hydraulic motor 9 via the switching position 24B and the reverse rotation side pressure oil supply pipe 51b, and the crusher hydraulic motor 9 is driven in the reverse direction. Driven to.

The forward and reverse drive signals Scr1,
When both Scr2 are turned off, the crusher control valve 24 is restored by the restoring force of the springs 24c and 24d.
Returning to the neutral position 24C shown in FIG.
The pressure oil from 1A is cut off, and the crushing device hydraulic motor 9 is stopped.

The right traveling control valve 27R
Is the same as the left traveling control valve 27L,
It is a hydraulic pilot type three-position switching valve capable of controlling the direction and flow rate of the pressure oil to the right traveling hydraulic motor 20R. The conveyor valve 25 and the magnetic separator valve 26 are two-position electromagnetic switching valves capable of controlling the direction and flow rate of pressure oil to the conveyor hydraulic motor 13 and the magnetic separator hydraulic motor 16. There is.

The right traveling control valve 27R,
The conveyor valve 25 and the magnetic separator valve 2
6 supplies pressure oil discharged from the second hydraulic pump 21B to the right traveling hydraulic motor 20R, the conveyor hydraulic motor 13 and the magnetic separator hydraulic motor 16, respectively.

Control valve 27R for the right traveling
Is arranged in a center bypass line 42Bb connected to the discharge conduit 42B of the second hydraulic pump 21B. A flow dividing valve 54 is connected to the downstream side of the center bypass line 42Bb.

The flow dividing valve 54 is a flow dividing valve known as this type having a built-in pressure compensation function, although detailed description of the structure is omitted. With the flow dividing valve 54, regardless of the load pressure of the conveyor hydraulic motor 13 or the magnetic separator hydraulic motor 16, for example, (the amount of hydraulic oil supplied to the conveyor hydraulic motor 13) is always: (Magnetic separator hydraulic pressure). Amount of pressure oil supplied to the motor 16) = 2: 1 is distributed and supplied. That is, when the right travel control valve 27R is not operated, 2/3 of the pressure oil from the second hydraulic pump 21B is supplied to the conveyor valve 2
5, the conduit 55, and the pressure oil supply conduit 55a branched from the conduit 55 to the conveyor hydraulic motor 13 and 1/3 of the pressure oil from the second hydraulic pump 21B to the magnetic separator valve. 26, a pipe 56, and a pressure oil supply pipe 56a branched from the pipe 56 to distribute and supply to the magnetic motor 16 for the magnetic separator.

From the viewpoint of circuit protection, relief valves 57 and 58 are provided in the conduits 55b and 56b branched from the conduits 55 and 56 of the conveyor valve 25 and the magnetic separator valve 26, respectively. The value of the relief pressure for limiting the maximum value of the supply pressure of the conveyor hydraulic motor 13 and the magnetic separator hydraulic motor 16 is set by the urging force of the springs 57a and 58a provided therein. ing.

The right traveling control valve 27R
Is operated by the pilot pressure of the right traveling operation lever device 30R in the same manner as the left traveling control valve 27L described above, so that the right traveling operation lever 30Ra is moved in the direction C in FIG. If the pilot pressure is changed to the pilot line 5
9a (or 59b) through the drive unit 27Ra (or 27Rb) of the right travel control valve 27R, thereby the right travel control valve 27R.
R is switched to the upper switching position 27RA (or the lower switching position 27RB) in FIG. Thereby, the second
The pressure oil from the hydraulic pump 21B is the switching position 27RA.
(Or the lower switching position 27RB) and the normal rotation side pressure oil supply pipeline 60a (or the reverse rotation side pressure oil supply pipeline 60b) are supplied to the right traveling hydraulic motor 20R and driven in the forward direction (or the reverse direction). To be done. The right traveling operation lever 30Ra
5 to the neutral position shown in FIG. 5, the right travel control valve 27R returns to the neutral position 27RC shown in FIG. 5 by the biasing force of the springs 27Rc and 27Rd, and the right travel hydraulic motor 20R stops.

The right traveling operation lever device 30R
The pilot pressure to is supplied from the pilot pump 22 via the traveling lock solenoid valve 40, as in the above-described left traveling operation lever device 30L. Therefore, when the drive signal St input to the solenoid 40a of the travel lock solenoid valve 40 is turned ON, the right travel control valve 27R can be operated by the right travel operation lever device 30R, and When the drive signal St is turned off, the operation of the right traveling control valve 27R by the right traveling operation lever device 30R becomes impossible.

The conveyor valve 25 is an electromagnetic switching valve equipped with a solenoid drive unit 25a. The solenoid drive unit 25a is provided with a solenoid that is driven by the drive signal Scon from the drive / display control unit 41a of the controller 41.
5 is switched according to the input of the drive signal Scon. That is, the solenoid drive unit 2
When the drive signal Scon output to 5a is turned on corresponding to the operation of the conveyor 3, the conveyor valve 25 is switched to the upper communicating position 25A in FIG. As a result, the pressure oil from the second hydraulic pump 21B guided via the neutral position 27RC of the right travel control valve 27R and the flow dividing valve 54 is supplied from the communication position 25A to the conduit 55 and the pressure oil supply. It is supplied to the conveyor hydraulic motor 13 through the pipe 55a, and the conveyor hydraulic motor 13 is driven. The return oil at this time returns to the tank 49 via the discharge pipeline 62 connected to the tank pipeline 61 and the tank pipeline 61. When the drive signal Scon output to the solenoid drive unit 25a is turned OFF corresponding to the stop of the conveyor 3, the conveyor valve 25 is returned to the shutoff position 25B shown in FIG. 5 by the urging force of the spring 25b, The conveyor hydraulic motor 13 is stopped.

Similar to the conveyor valve 25, the magnetic selector valve 26 has a solenoid driving portion 26a provided with a solenoid driven by a drive signal Sm from the drive / display control portion 41a of the controller 41. ing. When the drive signal Sm output to the solenoid drive unit 26a turns ON corresponding to the operation of the magnetic separator 4, the magnetic selector valve 26 is switched to the communication position 26A on the upper side in FIG. 5, and the second hydraulic pump 21B. Pressure oil from
The neutral position 27 of the control valve 27R for right driving
RC, the flow dividing valve 54, the valve communication position 2 for the magnetic separator
6A, the pipe 56 and the pressure oil supply pipe 56a are supplied to the magnetic motor 16 for the magnetic separator, and the hydraulic motor 16 for the magnetic separator is driven. The return oil is discharged to the tank line 61 through the discharge line 63 and the tank line 61.
Return to the tank 49 via. The solenoid drive unit 2
When the drive signal Sm output to 6a becomes OFF corresponding to the stop of the magnetic separator 4, the magnetic selector valve 26 returns to the shut-off position 26B shown in FIG. The hydraulic motor 16 stops.

The operation panel 31 is provided with various buttons, switches and the like as described above with reference to FIG. When the operator operates various buttons and switches on the operation panel 31, the operation signal Sa is input to the drive / display control section 41a of the controller 41. The drive / display control unit 41a, based on the operation signal Sa from the operation panel 31, controls the crushing device control valve 24 (solenoid drive units 24a and 24b), the conveyor valve 25, the magnetic separator valve 26, and the traveling system. The drive signals Scr1, Scr2, Sco to the locking solenoid valve 40
It is adapted to generate n, Sm and St and output them to the corresponding solenoids.

That is, when "travel" is selected by the operation selection switch 38 of the operation panel 31, the drive / display control section 41a outputs the drive signal St output to the travel lock solenoid valve 40. Turn it on. As a result, the traveling lock solenoid valve 40 is switched to the communication position 40A on the left side in FIG. 5, and the traveling control valves 27L and 27R can be operated by the left and right operation levers 30La and 30Ra. Further, when "crush" is selected by the operation selection switch 38 of the operation panel 31, the drive / display control section 41a outputs the drive signal St output to the travel lock solenoid valve 40.
Is turned off, and the traveling lock solenoid valve 40 returns to the shut-off position 40B on the right side in FIG. As a result, it becomes impossible to operate the traveling control valves 27L and 27R by the left and right traveling operation levers 30La and 30Ra.

Further, the "shredder forward rotation" button 35a (or the "shredder reverse rotation" button 3 of the operation panel 31 is used.
5c, hereinafter the same in parentheses) is pressed, the drive / display control unit 41a turns on (or turns off) the normal drive signal Scr1 to the solenoid drive unit 24a of the crusher control valve 24. The reverse drive signal Scr2 to the solenoid drive unit 24b.
FF (or ON), the control valve 24 for the crushing device is switched to the upper switching position 24A (or the lower switching position 24B) in FIG. 5, and the first hydraulic pump 21A.
The pressure oil is supplied to and driven by the hydraulic motor 9 for the crushing device, and the crushing device 2 is activated in the forward rotation direction (or reverse rotation direction).

Thereafter, the "shredder stop" button 3
When 5b is pressed, the drive / display control unit 41a
The forward / reverse rotation drive signals Scr1 and Scr2 are both turned off to return the crusher control valve 24 to the neutral position 24C shown in FIG. 5 and stop the crusher 2.

When the "start conveyor" button 36a on the operation panel 31 is pressed, the drive / display control section 41a sends the drive signal Scon to the solenoid drive section 25a of the conveyor valve 25. It is turned on to switch to the communication position 25A on the upper side in FIG. 5, and the pressure oil from the second hydraulic pump 21B is transferred to the conveyor hydraulic motor 13.
To drive the conveyor 3 to start. After that, when the "conveyor stop" button 35b is pressed, the drive / display control unit 41a outputs the drive signal Scon to the solenoid drive unit 25a of the conveyor valve 25 to OF.
When it is set to F, it is returned to the blocking position 25B shown in FIG. 5, and the conveyor 3 is stopped.

Similarly, the "start magnetic separator" button 37a.
When is pressed, the drive / display control unit 41a switches the magnetic selector valve 26 to the upper communication position 26A in FIG. 5, drives the magnetic separator hydraulic motor 16, and activates the magnetic separator 4. . Then, the "stop magnetic separator" button 37
When b is pressed, the drive / display control unit 41a returns the magnetic separator valve 26 to the shut-off position 26B and stops the magnetic separator 4.

As described above, the drive / display controller 41a
Has a function of generating each drive signal Scon, Sm, St, Scr1, Scr2 based on the operation signal Sa from the operation panel 31 and outputting them to the corresponding solenoid.
This is to automatically stop the crushing device 2, the conveyor 3, and the magnetic separator 4 according to the load pressure Pcr of the crushing device hydraulic motor 9. The details will be described below.

FIG. 6 is a flow chart showing the control contents related to the above-mentioned automatic stop function among the control functions of the drive / display control section 41a. In FIG. 6, the operation panel 3
When the "conveyor start" button 36a and the "magnetic separator start" button 37a of 1 are pressed, the operation signal Sa output from the operation panel 31 to the drive / display controller 41a is turned on, and the drive / display controller 41a starts this flow.

First, in step 10, the time calculator T ₁ for counting the drive time of the conveyor 3 and the magnetic separator 4 after the crushing device 2 is stopped, and the crushed object is thrown in after the crushing device 2 starts driving. First flags FLAG1 for identifying whether or not the load on the apparatus hydraulic motor 9 has increased are cleared to 0, respectively.

Next, at step 20, the drive signal Scon output to the conveyor valve 25 and the magnetic selector valve 26 are output in response to the operation of the "start conveyor" button 36a and the "start magnetic selector" button 37a. By turning on the drive signal Sm, the conveyer valve 25 is connected to the communication position 25A and the magnetic separator valve 26 as described above.
To the communication position 26A, and the second hydraulic pump 21B
The conveyer 3 and the magnetic separator 4 are driven by supplying the pressure oil from No. 1 to the conveyer hydraulic motor 13 and the magnetic separator hydraulic motor 16 via the pressure oil supply lines 55a and 56a.

At the next step 30, it is judged whether or not the crushing device 2 is instructed to drive. Specifically, it is determined whether or not the "shredder forward rotation" button 35a on the operation panel 31 has been pressed. If the determination is satisfied, the process proceeds to step 40. If the determination is not satisfied, step 30 is repeated until the "shredder forward rotation" button 35a is pressed and the determination is satisfied.

At the next step 40, the forward drive signal Scr1 output to the crusher control valve 24 is turned on.
And the reverse rotation drive signal Scr2 is turned off, the crusher control valve 24 is switched to the switching position 24A, and the pressure oil from the first hydraulic pump 21A is supplied to the crusher hydraulic motor via the forward rotation side pressure oil supply conduit 51a. 9, the crushing device 2 is driven in the normal direction.

In the next step 50, the signal indicator lamp 3 is
9 of the display signal Spt output to the upper display section 39a is OF
F is turned off and the upper display section 39a indicating that the apparatus is stopped is turned off, and the display signal Spt output to the lower display section 39b of the signal indicating lamp 39 is turned on to turn on the lower display section 39b indicating that the apparatus is operating in green. Go to step 60.

In step 60, it is determined whether or not the stopping of the crushing device 2 has been instructed. Specifically, it is determined whether or not the "shredder stop" button 35b on the operation panel 41 has been pressed. "Shredder stop" button 3
If 5b is pressed, this determination is satisfied, and the process moves to step 120 described later to stop the crushing device 2. If the "shredder stop" button 35b has not been pressed, this determination is not satisfied, and the routine goes to Step 70.

In step 70, the load pressure Pcr of the crusher hydraulic motor 9 detected by the pressure sensor 53 is detected.
Is input, and the process proceeds to step 80.

At step 80, the first flag FLAG1 is set.
Indicates whether the object to be crushed is introduced after the driving of the crushing device 2 is started and the load of the crushing device hydraulic motor 9 is once increased to 1 or not. The first flag FLAG at the start of driving
Since 1 is 0, this determination is not satisfied, and step 90
Move on to.

In step 90, it is determined whether the load pressure Pcr is smaller than the threshold value P ₀ . This threshold value P ₀ is a pressure value that substantially corresponds to (or has a little margin) the load pressure of the hydraulic motor 9 for the crushing device when no load is applied to the crushing device 2 and no load is applied. It is a predetermined value stored in advance in an appropriate portion of the controller 41 (or may be set and input by an appropriate external input means). If the load is not applied to the crusher hydraulic motor 9 if the crushed object is not loaded at the start of driving, the determination is satisfied and the routine returns to step 60. If the object to be crushed is loaded, the load on the hydraulic motor 9 for the crushing device increases, and the process proceeds to step 100.

In step 100, similarly to step 90, it is again determined whether the load pressure Pcr is smaller than the threshold value P ₀ . If the load pressure Pcr is equal to or higher than the threshold value P ₀ , the determination is not satisfied and the crushing device 2 is considered to be in the crushing process, and the first flag FLAG1 is set to 1 in step 110, and the process proceeds to step 60. Then, step 60, step 70
After that, in step 80, the first flag FLAG1 is 1, so the determination is satisfied, the process directly proceeds to the next step 100 without passing through step 90, and returns from step 110 to step 60 again. Thus, the crushing process by the crushing device 2 is continued while repeating steps 60 to 110.

When all the objects to be crushed put into the hood 1 are crushed in this way, the load pressure Pcr of the crusher hydraulic motor 9 becomes smaller than the threshold value P _0.
The determination of 00 is satisfied, and the routine goes to Step 120.

In step 120, both the forward rotation drive signal Scr1 and the reverse rotation drive signal Scr2 output to the crusher control valve 24 are turned off, the crusher control valve 24 is switched to the neutral position 24C, and the crusher 2 is stopped. .

In the next step 130, the time calculator T ₁
1 is added to and the driving time of the conveyor 3 and the magnetic separator 4 after the crushing device 2 is stopped is counted.

Next, at step 140, the time calculator T ₁
Is greater than the threshold value Ta. This threshold value Ta is, after the crusher 2 is stopped, crushed by the crusher 2 and discharged to the outside of the self-propelled crusher by the conveyor 3 while adsorbing the magnetic substance with the magnetic separator 4. The controller 41 should have sufficient time to discharge.
It is a predetermined value stored in advance in an appropriate part of (or may be set and input by an appropriate external input means). If the time calculator T ₁ is less than or equal to the threshold value Ta, the determination is not satisfied and the routine returns to Step 130. Time calculator T ₁
Is larger than the threshold value Ta, the determination is satisfied and the routine goes to Step 150.

At step 150, the conveyor valve 2
By turning off both the drive signal Scon output to 5 and the drive signal Sm output to the magnetic separator valve 26,
The conveyor valve 25 is switched to the shutoff position 25B and the magnetic separator valve 26 is switched to the shutoff position 26B, and the conveyor 3 and the magnetic separator 4 are stopped.

At the next step 160, the display signal Spt output to the signal indicator lower display section 39b is turned off to turn off the lower display section 39b indicating that the apparatus is in operation, and the display output to the signal indicator upper display section 39a. The signal Spt is turned on, the upper display portion 39a indicating that the apparatus is stopped is lit in red, and this flow is ended.

In the above, the main body frame 17 constitutes the frame described in the claims, the left and right endless track crawler belts 18 constitute the traveling means provided on the frame, and the first hydraulic pump 21A, A hydraulic pump that discharges pressure oil to a crusher hydraulic motor is configured. Also, the pressure sensor 5
Reference numeral 3 constitutes load detecting means for detecting the load of the crusher hydraulic motor 9 for driving the crusher. Further, the drive / display control unit 41a (specifically, step 40 and step 120 in the flow particularly shown in FIG. 6) constitutes valve control means for outputting a drive signal for switching the control valve for the crushing device. The crusher control valve 24 constitutes first stop control means for automatically stopping the drive of the crusher hydraulic motor according to the detection value of the load detection means.

Next, the operation and action of one embodiment of the self-propelled crusher of the present invention will be described below. In the self-propelled crusher configured as described above, during crushing work, the operator selects "crush" with the operation selection switch 38 of the operation panel 31 to disable the traveling operation, and then the "magnetic separator start-up". "
Press the button 37a and the "start conveyor" button 36a. Thereby, in step 10 of the flow of FIG. 6, the magnetic separator 4 and the conveyor 3 are activated.

In this state, when the operator presses the "shredder forward rotation" button 35a on the operation panel 31, step 3
In step 40 after 0, the crushing device 2 is driven in the normal direction. At this time, in the next step 50, the lower display portion 39b of the signal indicator light 39 is lit in green.

Next, for example, when the operator (or another worker may be used) manually puts the object to be crushed into the hood 1, the crushing operation of the object to be crushed by the crushing device 2 is started, and the steps described above are performed. 60 → Step 70 → Step 8
The object to be crushed is crushed by repeating 0 → step 100 → step 110 → step 60. The crushed crushed material is transported on the conveyor belt 12 of the conveyor 3 below the crushing device 2, and the magnetic material mixed in the crushed material is removed by the magnetic separator 4 during the transportation, and the size is reduced. They are almost aligned and finally discharged from the rear part of the self-propelled crusher (the left end part in FIG. 1).

When the crushing work is carried out in this manner and all the crushing work of the object to be crushed put into the hood 1 is completed, the load pressure Pcr of the crusher hydraulic motor 9 detected by the pressure sensor 53 is It decreases and becomes smaller than the threshold value P ₀ . As a result, the determination in step 100 is satisfied, and in the next step 120, the crushing device 2 automatically stops.

After the crushing device 2 is automatically stopped in this way, the drive / display controller 41a starts counting the driving time of the conveyor 3 and the magnetic separator 4 after the crushing device 2 is stopped in step 130. When the driving time of the conveyor 3 and the magnetic separator 4 becomes larger than the threshold value Ta, step 1
The determination of 40 is satisfied, and it is considered that the work of discharging the crushed material has been sufficiently completed, and the routine proceeds to step 150. Step 150
At, the magnetic separator 4 and the conveyor 3 are stopped. At this time, in the next step 160, the upper display portion 39a of the signal indicating lamp 39 is lit in red.

When the crushing device 2 is driven, for example, when an unexpected situation occurs and the user wants to stop the crushing device 2 urgently, the operator can press the "shredder stop" button 35b on the operation panel 31. When the determination in step 60 is satisfied, the process directly proceeds to step 120, and the crushing device 2 can be stopped by the same procedure as above.

As described above, according to one embodiment of the self-propelled crusher of the present invention, when the load pressure Pcr of the crusher hydraulic motor 9 becomes smaller than the threshold value P ₀ , it is automatically When the crushing device 2 is stopped and then a time sufficient for discharging the crushed crushed material elapses, the conveyor 3 and the magnetic separator 4 are automatically stopped. As a result, even if the object to be crushed is directly put into the hood 1 and crushed by human power, for example, the person who puts the object to be crushed confirms the completion of the crushing work and then presses the "shredder stop" button on the operation panel 31. 35
It is not necessary to stop the crushing device 2, the conveyor 3, and the magnetic separator 4 by pressing b, the "conveyor stop" button 36b, and the "magnetic separator stop" button 37b. That is, it is possible to immediately leave the crushing work place and return to the own work place while the self-propelled crusher is performing the crushing work after the completion of charging of the crushed object. In this way, the monitoring time until the completion of the crushing, which is required every time the crushing work is performed, is unnecessary, so that the workability of the worker in the original work can be improved.

In the embodiment of the self-propelled crusher of the present invention, the load pressure Pcr of the crusher hydraulic motor 9 is detected by the pressure sensor 53, and the load pressure Pcr is detected.
When the value becomes smaller than the threshold value P ₀ , the crushing device 2 is controlled to automatically stop, but the present invention is not limited to this. That is, the rotation speed N of the hydraulic motor 9 for the crushing device is measured using the rotation speed sensor.
It is also possible to detect cr and automatically stop the crushing device 2 when the number of rotations Ncr exceeds a predetermined threshold value Na. Also in this case, the same effect as that of the above-described embodiment of the present invention can be obtained.

Next, another embodiment of the self-propelled crusher of the present invention will be described with reference to FIGS. 7 and 8. In the present embodiment, the crushing device 2 is automatically stopped after being driven for a predetermined time.

FIG. 7 is a hydraulic circuit diagram showing the overall construction of a hydraulic drive system in another embodiment of the self-propelled crusher of the present invention, and is shown in FIG. 5 in the above-mentioned one embodiment of the present invention. It is a corresponding figure. 7, the same parts as those in FIG. 5 are designated by the same reference numerals and the description thereof will be omitted.

In FIG. 7, reference numeral 41a 'indicates the driving time of the crushing device 2 instead of the load pressure Pcr of the crushing device hydraulic motor 9 detected by the pressure sensor 53 in the embodiment of the present invention. This is a drive / display control unit having a function of automatically stopping the crushing device 2 by means of.

FIG. 8 is a flow chart showing the control contents related to the automatic stop function of the crushing device 2, the conveyor 3 and the magnetic separator 4 among the control functions of the drive / display control section 41a '. 6 in one embodiment
It is a figure equivalent to. In FIG. 8, when the "conveyor start" button 36a and the "magnetic separator start" button 37a of the operation panel 31 are pressed, an operation signal Sa output from the operation panel 31 to the drive / display control unit 41a 'is generated. O
Then, the drive / display control unit 41a 'starts this flow.

First, at step 210, a time calculator T ₂ for counting the drive time of the crushing device 2 after the "shredder forward rotation" button 35a is pressed, and the conveyor 3 and magnetic separation after the crushing device 2 is stopped. The time calculators T ₃ for counting the drive time of the machine 4 are each cleared to 0, and the process proceeds to step 220. This time calculator T
₃ is equivalent to the time calculator T ₁ of FIG. 6 in the embodiment of the invention described above.

In step 220, the drive signal Scon output to the conveyor valve 25 and the drive signal Sm output to the magnetic separator valve 26 are turned on to drive the conveyor 3 and the magnetic separator 4.

Next, at step 230, it is judged whether or not there is an instruction to drive the crushing device 2 in the normal direction, based on whether or not the "shredder normal rotation" button 35a of the operation panel 31 has been pressed. If the determination is satisfied, the process proceeds to step 240. If the judgment is not satisfied, the “shredder forward rotation” button 35
Step 230 is repeated until a is pressed.

In step 240, the forward rotation drive signal Scr1 output to the crusher control valve 24 is turned on and the reverse rotation drive signal Scr2 is turned off to drive the crusher 2 in the forward rotation direction.

At the next step 250, the display signal Spt output to the signal indicator light upper display portion 39a is turned off to turn off the upper display portion 39a indicating that the apparatus is stopped and output to the signal indicator light lower display portion 39b. Display signal Spt
The lower display portion 39b is set to N and the lower display portion 39b indicating that the apparatus is operating is lit in green.

At the next step 260, it is judged whether or not the stop of the crushing device 2 is instructed by whether or not the "shredder stop" button 35b of the operation panel 41 is pressed. If the "shredder stop" button 35b is pressed, this determination is satisfied, and the process moves to step 290 described later to stop the crushing device 2. If the "shredder stop" button 35b is not pressed, this determination is not satisfied, and the routine goes to Step 270.

At step 270, 1 is added to the time calculator T ₂ and the routine proceeds to step 280.

In step 280, it is determined whether the time calculator T ₂ is larger than the threshold value Tb. This threshold value Tb is a predetermined value stored in advance in an appropriate portion of the controller 41 as a sufficient time for completing all the crushing work of the crushed object to be thrown into the crushing device 2 (or appropriately. The external input means may be used for setting input). If the time calculator T ₂ is equal to or less than the threshold value Tb, the determination is not satisfied, and the process returns to step 260. If the time calculator T ₂ is larger than the threshold value Tb, the determination is satisfied, and the routine goes to Step 290.

In step 290, both the forward rotation drive signal Scr1 and the reverse rotation drive signal Scr2 output to the crusher control valve 24 are turned off to stop the crusher 2.

In the next step 300, the time calculator T ₃
Is added to 1, and the process proceeds to step 310.

In step 310, it is judged whether the time calculator T ₃ is larger than the above-mentioned threshold value Ta. If the time calculator T ₃ is less than or equal to the threshold value Ta, the determination is not satisfied and the routine returns to Step 300. The time calculator T ₃ is the threshold T
If it is larger than a, the determination is satisfied and the routine goes to Step 320.

At step 320, the conveyor valve 2
By turning off both the drive signal Scon output to 5 and the drive signal Sm output to the magnetic separator valve 26,
The conveyor 3 and the magnetic separator 4 are stopped.

In the next step 330, the display signal Spt output to the signal indicator light lower display section 39b is turned off to turn off the lower display section 39b indicating that the apparatus is in operation and to output to the signal indicator light upper display section 39a. The signal Spt is turned on, the upper display portion 39a indicating that the apparatus is stopped is lit in red, and this flow is ended.

In the above, the drive / display control section 41a '
The steps 270 and 280 in the flow of FIG. 8 performed by the CPU constitute timer means for detecting time information relating to the operating time of the crushing device described in the claims, and step 240 and step 290 in the flow of FIG. Configures valve control means for outputting a drive signal for switching the control valve for the crushing device, and this and the control valve 24 for the crushing device automatically drive the hydraulic motor for the crushing device according to the detection value of the timer means. A second stop control means for stopping is configured.

According to another embodiment of the self-propelled crusher of the present invention having the above-mentioned structure, after the crushing device 2 is started, the driving time is automatically increased when the driving time becomes larger than the threshold value Tb. Then, the crushing device 2 is stopped, and thereafter, the conveyor 3 and the magnetic separator 4 are automatically stopped when a time sufficient for discharging the crushed crushed material elapses, as in the above-described embodiment of the present invention. As a result, the worker can immediately leave the crushing work place and return to his own work place with the self-propelled crusher performing the crushing work after completing the input of the crushed object. In addition, it is possible to obtain the effect of improving workability in the worker's original work.

In the other embodiment of the self-propelled crusher of the present invention, the "shredder forward rotation" button 35a is used.
Although the stop control was performed by the drive time after pressing and the crushing device 2 was started, the stop control is not limited to this. That is, the start of the crushing work of the crushing device 2 may be detected by, for example, detecting the load pressure of the hydraulic motor 9 for the crushing device, and based on this, the stop control may be performed by the drive time after the start of the crushing work. In this case also, the same effect as that of the above-described embodiment of the present invention can be obtained.

Next, still another embodiment of the self-propelled crusher of the present invention will be described with reference to FIGS. 9 to 11. In this embodiment, all the hydraulic actuators including the crusher hydraulic motor 9 are stopped by automatically stopping the engine 23.

FIG. 9 is a hydraulic circuit diagram showing the overall construction of a hydraulic drive system in still another embodiment of the self-propelled crusher of the present invention. FIG. 5 in the above-mentioned one embodiment of the present invention. FIG. 8 is a diagram corresponding to FIG. 7 in another embodiment of the present invention. 9, the same parts as those in FIGS. 5 and 7 are designated by the same reference numerals and the description thereof will be omitted. In FIG. 9, 64 is an engine control unit for controlling the drive of the engine 23, and 41a ″ is newly added with a function of outputting an engine stop signal Sc to the engine control unit 64 when predetermined conditions (described later) are met. Drive / display controller, 41 '
Are the engine control unit 64 and the drive / display control unit 41.
It is a controller equipped with a ″.

FIG. 10 shows the drive / display control section 41a ".
9 is a flowchart showing the control contents related to the automatic stop function of the engine 23 among the control functions of FIG. Is. In FIG. 10, the “start conveyor” button 36 on the operation panel 31
When a and the "start magnetic separator" button 37a are pressed,
The operation signal Sa output from the operation panel 31 to the drive / display controller 41a ″ is turned on, and the drive / display controller 41 is turned on.
a ″ starts this flow.

First, at step 410, a time calculator for counting the drive time of the conveyor 3 and the magnetic separator 4 from the time when the load pressure Pcr of the crusher hydraulic motor 9 becomes smaller than the threshold value P _0. T ₄ and crushing device 2
After the start of driving, the second flag FLAG2 for identifying whether or not the load of the crushing device hydraulic motor 9 has once increased by throwing in the crushed object is cleared to 0. The second flag FLAG2 is equivalent to the first flag FLAG1 of FIG. 6 in the embodiment of the invention described above.

The following steps 420 to 520 (except step 470) are the same as steps 20 to 110 of FIG. 6 in the embodiment of the present invention. That is, the conveyor 3 and the magnetic separator 4 are driven, and the "shredder normal rotation" button 35a is pressed to drive the crushing device 2 in the normal direction, and at the same time, the signal indicator light display section 39b is turned on in green. Step 460 → Step 48 until the material to be crushed is loaded
0 → step 490 → step 500 → step 460
When the object to be crushed is input repeatedly, the crushing device 2 performs the crushing work while repeating step 460 → step 480 → step 490 → step 510 → step 520 → step 460.

If the determination is satisfied by pressing the "shredder stop" button 35b in step 460, the crushing device 2 is stopped in step 470, and the process proceeds to step 560 described later.

When the crushing operation of the crushed object is completed and the load pressure Pcr of the crusher hydraulic motor 9 falls below the threshold value P ₀ , the determination at step 510 is satisfied and step 53 is performed.
Move to 0.

In step 530, the time calculator T ₄
1 is added to, and the process proceeds to the next Step 540.

At step 540, the time calculator T_FourGashi
It is determined whether it is larger than the threshold value Tc. This threshold
The value Tc depends on the load pressure Pcr of the hydraulic motor 9 for crushing.
Value P ₀Crushing discharged from the crushing device 2 after the crushing
Used for discharging the product by the conveyor 3 and the magnetic separator 4.
As a minute time, an appropriate portion of the controller 41 '
Is a predetermined value stored in advance (or an appropriate external value
It may be set and input by the input means). Na
Oh, this time calculator T_FourIs an embodiment of the present invention described above.
T in FIG.₁And Figures of other embodiments of the invention
T in 8_ThreeHas the same significance as. Hour meter
Arithmetic T_FourIs less than the threshold value Tc, the judgment is not satisfied.
Return to step 520. Time calculator T_FourIs the threshold Tc
If it is larger, the determination is satisfied and the routine goes to Step 550.
It

In step 550, the engine stop signal Sc is output to the engine control section 64, and in step 560
Move on to.

In step 560, the signal indicator lower display section 39b is turned off and the signal indicator upper display section 39a is turned on in red, and this flow is ended.

Returning to FIG. 9, 65 is a fuel injection control device, and 6
6 is a fuel injection device, 67 is a rotation speed sensor for detecting the rotation speed Nen of the engine 23, and 68 is a throttle device for setting the engine rotation speed.

The engine control unit 64 controls the fuel injection control unit 65 to inject fuel based on the set rotational speed N input by the throttle device 68 and the rotational speed Nen of the engine 23 detected by the rotational speed sensor 67. It outputs the signal Sen. As a result, the fuel injection control device 65 controls the fuel injection amount of, for example, a known fuel injection pump provided in the fuel injection device 66 based on the injection control signal Sen input from the engine control unit 64. The rotation speed Nen of the engine 23 is determined according to this fuel injection amount, and this rotation speed Nen is the rotation speed sensor 6
7 and is fed back to the engine control unit 64. In this way, the engine speed Nen
Is controlled by the engine control unit 64.

FIG. 11 is a flow chart showing the control contents of the engine control unit 64. When a key is inserted into the key switch 34 on the operation panel 31 shown in FIG. 4 and turned to "start", the operation signal Sb output from the operation panel 31 to the engine control unit 64 is turned on. Then, the engine control unit 64 starts this flow.

In step 610, a well-known starter motor (not shown) provided in the engine 23 is driven, spark is generated by a spark plug (not shown), and further output to the fuel injection control device 65. The signal Sen is turned on to cause the fuel injection device 66 to inject fuel and drive the engine 23.

In the next step 620, it is determined whether or not there is an instruction to stop the engine 23. Specifically, it is determined whether the key switch 34 of the operation panel 31 has been turned off. If the determination is satisfied, the routine proceeds to step 630, where the injection control signal Sen output to the fuel injection control device 65 is output.
Is turned off, fuel injection is stopped by the fuel injection device 66, and the engine 23 is stopped. If the determination is not satisfied, the process proceeds to step 640.

In step 640, it is determined whether or not the engine stop signal Sc is input from the drive / display control section 41a ". If the engine stop signal Sc is input, the determination is satisfied, and the routine proceeds to step 630. The engine 23 is stopped by the same procedure as in step 6. If the engine stop signal Sc is not input, the determination is not satisfied, and the routine proceeds to step 650.

In step 650, the throttle device 68
Input the set speed N output from
In 60, the engine 2 detected by the rotation speed sensor 67
The rotation speed Nen of 3 is input, and the process proceeds to step 670.

In step 670, it is determined whether the engine speed Nen input in steps 650 and 660 is equal to the set engine speed N. Number of revolutions N
If en and the set rotation speed N are equal, the determination is satisfied, and the routine returns to step 620. If the rotation speed Nen is not equal to the set rotation speed N, the determination is not satisfied, and the routine goes to Step 680.

At step 680, the engine speed Nen
Is greater than the set rotation speed N. If the engine speed Nen is less than or equal to the set speed N, the determination is not satisfied, and the routine goes to Step 690.

In step 690, the injection control signal Sen is output to the fuel injection control device 65 so as to increase the fuel injection amount from the present, and the fuel injection device 66 controls the fuel injection to the engine 23 under the control of this fuel injection control device 65. The injection amount is increased and the rotation speed of the engine 23 is increased. Then, the process returns to step 620.

If the engine speed Nen is larger than the set speed N in the previous step 680, the determination is satisfied, and the routine goes to step 700.

In step 700, the injection control signal Sen is outputted to the fuel injection control device 65 so as to reduce the fuel injection amount from the present, and the fuel injection device 66 controls the fuel injection device 66 to send the fuel to the engine 23 under the control of this fuel injection control device 65. The injection amount is reduced and the rotation speed of the engine 23 is reduced. Then, the process returns to step 620.

In the above, the engine control unit 64 and the fuel injection control device 65 automatically stop the drive of the hydraulic motor for the crushing device in accordance with the detection value of the load detecting means described in each of the claims. While configuring the control means,
It also constitutes injection control means for controlling fuel injection into the engine.

Next, the operation and action of still another embodiment of the self-propelled crusher of the present invention will be described below. When performing a crushing operation in the self-propelled crusher configured as described above, the operator inserts a key into the key switch 34 of the operation panel 31 and turns the key to "start". As a result, the engine 23 is driven in step 610 in the flow of FIG.

At this time, the operator operates the throttle device 6
When the set rotation speed N of the engine 23 is set to an appropriate value by 8, the engine control unit 64 repeats steps 650 to 700 in the flow of FIG. 11 to make the engine rotation speed Nen substantially equal to the set rotation speed N. The fuel injection amount is adjusted so that

After driving the engine 23 in this way,
The operator operates the operation panel 3 in the same manner as in the embodiment of the present invention.
After selecting "crush" with the operation selection switch 38 of No. 1 to disable the traveling operation, the "magnetic separator start" button 3
7a and the "start conveyor" button 36a. As a result, in step 420 in the flow of FIG. 10, the magnetic separator 4 and the conveyor 3 are driven.

In this state, when the operator presses the "shredder forward rotation" button 35a on the operation panel 31, the crushing device 2 is driven in the forward rotation direction in step 440 of the flow in FIG. At this time, in the next step 450,
The signal indicator light lower display section 39b lights up in green.

Next, for example, when the operator (or another worker) may manually put the object to be crushed into the hood 1, the operation of crushing the object to be crushed by the crushing device 2 is started and crushed. The crushed material is dropped onto the conveyor belt 12 of the conveyor 3 below the crushing device 2 and is transported, and the magnetic material mixed in the crushed material is removed by the magnetic separator 4 during the transportation, and finally the self-propelled type. It is discharged from the rear of the crusher.

When all the crushing work of the crushed object is completed in this way, the load pressure Pcr of the crusher hydraulic motor 9 detected by the pressure sensor 53 is equal to the threshold value P _0.
It becomes smaller, and the determination at step 510 in the flow of FIG. 10 is satisfied. At this point, counting by the time calculator T ₄ starts, and when the elapsed time exceeds the threshold value Tc, the determination at step 540 is satisfied, and at the next step 550, the drive / display control unit 41a ″ causes the engine control unit 64 to operate.
The engine stop signal Sc is output to.

As a result, the determination at step 640 in the flow of FIG. 11 is satisfied, and the engine 23 is automatically stopped at step 630. That is, when all hydraulic actuators including the hydraulic motor 9 for the crushing device are stopped, the crushing device 2, the conveyor 3, and the magnetic separator 4 are stopped.
Stop together.

At this time, in step 560 in the flow of FIG. 10, the signal indicator light on-display section 39a lights up in red.

In this case, the crushing device control valve 24, the conveyor valve 25, and the magnetic separator valve 26 have a switching position 24A and communication positions 25A, 26, respectively.
It remains in the A state. Therefore, the operator presses the "shredder stop" button 35b, the "conveyor stop" button 36b, and the "magnetic separator stop" button 37b of the operation panel 31 before the next crushing work, and the crusher control valve 24 , Control valve 25 for conveyor, and valve 26 for magnetic separator are in neutral position 2
4C, once returned to the shutoff positions 25B, 26B,
The engine 23 may be started.

When the crushing device 2 is driven, for example, when an unexpected situation occurs and the user wants to stop the crushing device 2 in an emergency, the operator presses the "shredder stop" button 35b on the operation panel 31. 10, the determination in step 460 of FIG. 10 is satisfied, the process proceeds to step 470, and only the crushing device 2 can be stopped.

According to still another embodiment of the self-propelled crusher of the present invention having the above-mentioned configuration, the load pressure Pcr of the crusher hydraulic motor 9 becomes smaller than the threshold value P ₀ , and then the crusher crushes. When a sufficient time has elapsed for discharging the crushed material, the engine 23 automatically stops. That is, the crushing device 2, the conveyor 3, and the magnetic separator 4 can be automatically stopped at the same time. As a result, the worker can immediately leave the crushing work place and return to his own work place with the self-propelled crusher performing the crushing work after completing the input of the crushed object. In addition, it is possible to obtain the effect of improving workability in the worker's original work.

Further, according to the present embodiment, even after the crushing device 2, the conveyor 3 and the magnetic separator 4 are stopped, the engine 2
As compared with the above-described one embodiment and other embodiments of the present invention in which 3 is in the idling state, the engine 23 is automatically stopped, so that it is possible to save fuel and reduce the financial burden on the user side. is there.

Furthermore, the drive signals Scr1, Scr2, S from the drive / display control section 41a "are caused by, for example, some reason.
Even if con and Sm are turned off, even if the crusher control valve 24, the conveyor valve 25, and the magnetic separator valve 26 malfunction and do not return to the neutral position 24C and the shutoff positions 25b and 26b. By stopping the engine 23, the crushing device 2, the conveyor 3, and the magnetic separator 4 can be surely stopped. As a result, it is possible to more reliably obtain the effect of improving the workability of the worker in the original work and also the effect of improving the work safety.

Next, still another embodiment of the self-propelled crusher of the present invention will be described with reference to FIGS. In the present embodiment, after the crushing device 2, the conveyor 3 and the magnetic separator 4 are automatically stopped, the crushing device 2, the conveyor 3 and the magnetic separator 4 are restarted when the object to be crushed is again put into the hood 1 within a predetermined time. To do.

FIG. 12 shows a hood 1 and a crushing device 2 which constitute still another embodiment of the self-propelled crusher of the present invention.
It is a side view showing the vicinity of the crushed object by hand, with a part of the cross section shown. FIG. 13 is a hydraulic circuit diagram showing an overall configuration of a hydraulic drive system in still another embodiment of the self-propelled crusher of the present invention. FIG. 5 and FIG. 7 in another embodiment and FIG. 9 in yet another embodiment of the present invention.
It is a figure equivalent to. In FIG. 13, FIG. 5 and FIG.
The same parts as those in FIG. 9 are designated by the same reference numerals and the description thereof will be omitted. In FIG. 12, reference numeral 69 is a pair of photoelectric sensors provided in the vicinity of the inlet of the hood 1, for example. This photoelectric sensor 69 is composed of a light emitting device 69a and a light receiving device 69b, similar to a sensor known as this type of sensor, and has two penetrating holes which are provided near the insertion port of the hood 1 in a substantially vertical direction. A light emitter 69a and a light receiver 69 are provided in holes (not shown).
b is inserted so as to face each other in a substantially vertical direction.
Then, when the light emitted from the light emitter 69a is blocked by the crushed object and does not reach the light receiver 69b, the light receiver 69b sends a closing detection signal Sd to the drive / display control unit 41a '''described later. It is designed to output.

In FIG. 13, reference numeral 41a '''denotes a crushing device when the closing detection signal Sd is input from the photodetector 69b within a predetermined time after the crushing device 2, the conveyor 3 and the magnetic separator 4 are automatically stopped. 2, a drive / display control unit with a function of automatically restarting the conveyor 3 and the magnetic separator 4.

FIG. 14 shows the drive / display controller 41.
Among the control functions of a ″ ′ ″, the crushing device 2, the conveyor 3 and the
And control contents related to the automatic stop / start function of the magnetic separator 4
2 is a flow chart showing an embodiment of the present invention described above.
6 in a state of FIG. 8 and FIG. 8 in another embodiment of the present invention.
10 and FIG. 10 in still another embodiment of the present invention.
FIG. In FIG. 14, first, step 810.
Then, after the "shredder forward rotation" button 35a is pressed
Calculation for counting the drive time of the crusher 2
Child T₅, The conveyor 3 and the magnetic separator 4 after the crushing device 2 is stopped
Time calculator T for counting the driving time of₆, Con
To count the time after the bear 3 and magnetic separator 4 are stopped
Time calculator T₇, Crushing device 2, conveyor 3, magnetic separation
The object to be crushed was put into the hood 1 after the machine 4 was automatically stopped.
The third flag FLAG3 for identifying whether or not
Rear and move to step 820. In addition, this time calculator
T₅Is the same as that of FIG. 8 in the other embodiment of the present invention described above.
Time calculator T_TwoIs equivalent to and time calculator T ₆Is the above
Of the time calculator T of FIG. 6 according to the embodiment of the present invention.₁
And the time calculator of FIG. 8 in another embodiment of the invention.
T_ThreeIs equivalent to

At step 820, the conveyor 3 and the magnetic separator 4
Is driven, and in step 830, the third flag FLAG
It is determined whether or not 3 is 1 indicating that the crushed object has been put into the hood 1 after the crushing device 2, the conveyor and the magnetic separator 4 are automatically stopped. If the third flag FLAG3 is 0, the determination is not satisfied, and the routine goes to Step 840. Third flag FL
If AG3 is 1, the determination is satisfied, and the process directly moves to step 850 without passing through step 840.

Steps 840 to 940 are step 230 of FIG. 8 in the other embodiment of the present invention described above.
~ The same as step 330. That is, when the "shredder forward rotation" button 35a is pressed, the crushing device 2 is driven, and the signal indicator light lower display section 39b is lit in green. The drive time of the crushing device 2 is the above-mentioned threshold value T
When the value exceeds b, the crushing device 2 is stopped, and when the elapsed time after stopping the crushing device 2 exceeds the above-mentioned threshold value Ta, the conveyor 3
And the magnetic separator 4 is stopped. Then, the above-mentioned signal indicator light display section 39a is lit in red.

At the next step 950, it is determined whether or not the crushed object is put into the hood 1. In particular,
It is determined whether or not the closing detection signal Sd is input from the light receiver 69b of the photoelectric sensor 69. Light receiver 69b
The determination is satisfied when the closing detection signal Sd is input from
In step 960, the third flag FLAG3 is set to 1 indicating that the material to be crushed has been put into the hood 1 and step 81
Return to 0. If the closing detection signal Sd is not input from the light receiver 69b, the determination is not satisfied, and the routine goes to Step 970.

At step 970, 1 is added to the time calculator T ₇ .
In step 980, it is determined whether this time calculator T ₇ is larger than the threshold value Td. This threshold value Td is the time that enables automatic restart after the conveyor 3 and the magnetic separator 4 are automatically stopped.
It is a predetermined value stored in advance in an appropriate part of 1 (or may be set and input by an appropriate external input means). If the determination is not satisfied, the process returns to step 950, and if the determination is satisfied, this flow is ended.

When the determination is satisfied in the previous step 950 and the process returns to step 810 via step 960, the conveyor 3 and the magnetic separator 4 are driven in step 820, the process directly moves from step 830 to step 850, and the crushing device is operated. 2 drives.

In this way, the conveyor 3 and the magnetic separator 4
After the stop, the conveyor 3, the magnetic separator 4, and the crushing device 2 are automatically restarted if the material to be crushed is input within the time of the threshold Td. Does not restart even if a crushed object is input, and the operator manually starts the conveyor 3, the magnetic separator 4, and the crushing device 2 again.

In the above, the drive display control section 41
The steps 880 and 890 in FIG. 14 performed by a ″ ″ constitute timer means for detecting time information relating to the operating time of the crushing apparatus described in the claims, and step 850 and the step 850 in the flow of FIG. Step 900 constitutes the second stop control means for automatically stopping the drive of the hydraulic motor for the crushing device according to the detection value of the timer means together with the control valve 24 for the crushing device, and is stopped by the second stop control means. A restart control means for restarting the hydraulic motor for the crushing device under a predetermined condition is also configured. Further, the photoelectric sensor 69, the light emitter 69a, and the light receiver 69b constitute an input detecting means for detecting the input of the crushed object to the crushing device.

Next, the operation and action of still another embodiment of the self-propelled crusher of the present invention will be described below. When performing a crushing operation in the self-propelled crusher having the above structure, the operator operates the operation panel 3 in the same manner as in the above-described embodiment of the present invention.
By selecting "crush" with the operation selection switch 38 of No. 1 and pressing the "magnetic separator start" button 37a and the "conveyor start" button 36a, the conveyor 3 and the magnetic separator 4 are operated in step 820 of the flow of FIG. Will start. Further, by pressing the "shredder normal rotation" button 35a, the crushing device 2 is driven in the normal rotation direction in step 850. At this time, in the next step 860, the signal indicator light lower display section 39b lights up in green.

In this way, the crushing device 2, the conveyor 3 and the magnetic separator 4 are kept in a driven state, and for example, an operator (or another operator may be used) manually puts the crushed object into the hood 1.
When thrown in, the crushing operation of the object to be crushed by the crushing device 2 is started.

The driving time of the crushing device 2 is the threshold value T mentioned above.
When it exceeds b, the determination at step 890 is satisfied, and at step 900, the drive / display control unit 41a ″ ′ stops the crushing device 2. Next, when the elapsed time after stopping the crushing device 2 exceeds the above-mentioned threshold value Ta, step 9
The determination of 20 is satisfied, and in step 930, the drive / display control unit 41 a ″ ″ stops the conveyor 3 and the magnetic separator 4. At this time, in the next step 940,
The signal indicator light upper display section 39a lights up in red.

After the crushing device 2, the conveyor 3 and the magnetic separator 4 are automatically stopped in this way, the operator again puts the crushed object into the hood 1.
If the time elapsed after the conveyor 3 and the magnetic separator 4 are stopped is within the threshold value Td, the light receiver 6
9b is a drive / display control unit 41 for driving the closing detection signal Sd.
output to a ″ ″, and the determination at step 950 is satisfied. As a result, through the next step 960, step 81
Returning to 0, in steps 820 and 850, the conveyor 3, the magnetic separator 4 and the crushing device 2 are automatically restarted, and the crushing work is started again.

According to still another embodiment of the self-propelled crusher of the present invention having the above-described structure, the crushing device 2, the conveyor 3 and the magnetic separator 4 are automatically stopped, so that the above-mentioned one embodiment is realized. Similar to the form, it is possible to obtain the effect of improving workability in the worker's original work.

Furthermore, in the present embodiment, even after the crushing device 2, the conveyor 3 and the magnetic separator 4 are automatically stopped, the crushing device is again put into the hood 1 within a predetermined time. 2 automatically restarts together with the conveyor 3 and the magnetic separator 4. This saves the operator from having to press the "magnetic separator start" button 37a, the "conveyor start" button 36a, and the "shredder forward rotation" button 35a on the operation panel 31 again, further reducing the working time at the crushing workshop. Therefore, the workability in the worker's original work can be further improved. In addition, the burden on the operator during the crushing work is reduced, and the operability is improved.

[0163]

According to the present invention, the load pressure of the hydraulic motor for the crushing device for driving the crushing device is detected, and when the crushing of the crushed object is completed and the load pressure becomes small. By adopting a structure in which the drive of the hydraulic motor for the crushing device is automatically stopped, it is not necessary for the worker to notice the completion of the crushing, and it is possible for the worker to immediately return to his / her own workplace. As a result, it is possible to improve workability in the worker's original work.

According to the second aspect of the present invention, the drive / display control unit counts the drive time of the crusher hydraulic motor, and automatically stops the drive of the crusher hydraulic motor when the drive time is driven for a predetermined time. The structure eliminates the need for the worker to notice the completion of the crushing, and enables the worker to immediately return to his / her own workplace. As a result, it is possible to improve workability in the worker's original work.

[Brief description of drawings]

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

FIG. 2 is a top view showing the overall structure of an embodiment of the self-propelled crusher of the present invention.

FIG. 3 is a front view seen from the direction A in FIG.

FIG. 4 is a front view showing a panel surface of an operation panel that constitutes an embodiment of the self-propelled crusher of the present invention.

FIG. 5 is a hydraulic circuit diagram showing an overall configuration of a hydraulic drive system in an embodiment of the self-propelled crusher of the present invention.

FIG. 6 is a flow chart showing the control contents related to the automatic stopping function of the crushing device, the conveyor and the magnetic separator among the control functions of the drive / display control unit that constitutes an embodiment of the self-propelled crusher of the present invention. is there.

FIG. 7 is a hydraulic circuit diagram showing an overall configuration of a hydraulic drive system in another embodiment of the self-propelled crusher of the present invention.

FIG. 8 is a flowchart showing the control contents related to the automatic stopping function of the crushing device, the conveyor, and the magnetic separator among the control functions of the drive / display control unit constituting the other embodiment of the self-propelled crusher of the present invention. Is.

FIG. 9 is a hydraulic circuit diagram showing an overall configuration of a hydraulic drive system in still another embodiment of the self-propelled crusher of the present invention.

FIG. 10 shows the control contents related to the automatic stop function of the crushing device, the conveyor and the magnetic separator among the control functions of the drive / display control unit that constitutes still another embodiment of the self-propelled crusher of the present invention. It is a flowchart.

FIG. 11 is a flowchart showing the control contents of an engine control unit which constitutes still another embodiment of the self-propelled crusher of the present invention.

FIG. 12 is a side view showing a hood and a crushing device of a self-propelled crusher according to still another embodiment of the present invention in the vicinity of a crushing device, partially in cross section, when a crushed object is manually loaded.

FIG. 13 is a hydraulic circuit diagram showing an overall configuration of a hydraulic drive system in still another embodiment of the self-propelled crusher of the present invention.

FIG. 14 is a control content relating to an automatic stop / start function of a crushing device, a conveyor, and a magnetic separator among control functions of a drive / display control unit which constitutes still another embodiment of the self-propelled crusher of the present invention. It is a flowchart showing.

[Explanation of symbols]

2 Crushing device 9 Crushing device hydraulic motor 17 Body frame (frame) 18 Left / right crawler track (traveling means) 21A First hydraulic pump (hydraulic pump) 23 Engine 24 Crushing device control valve (first stop control means) , Second stop control means, restart control means) 41a drive / display control section (first stop control means, valve control means) 41a 'drive / display control section (second stop control means, valve control means) 41a ″ ″ Drive / display control section (second stop control means, restart control means) 53 Pressure sensor (load detection means) 64 Engine control section (first stop control means,
Injection control means) 65 Fuel injection control device (first stop control means, injection control means) 69 Photoelectric sensor (make-up detection means) 69a Light emitter (make-up detection means) 69b Light receiver (make-up detection means)

Continued front page    (72) Inventor Kentaro Hashimoto             Hitachi Construction Machinery Co., Ltd.             Ceremony Company Tsuchiura Factory (72) Inventor Masamichi Tanaka             Hitachi Construction Machinery Co., Ltd.             Ceremony Company Tsuchiura Factory (72) Inventor Jun Ikeda             Hitachi Construction Machinery Co., Ltd.             Ceremony Company Tsuchiura Factory F-term (reference) 4D067 DD04 FF04 FF15 GA06 GA18                       GB03

Claims (6)

[Claims] 1. A frame, a traveling means provided on the frame, a crushing device provided on the frame, a load detecting means for detecting a load of a hydraulic motor for the crushing device for driving the crushing device, and a load detecting means for detecting the load. A self-propelled crusher, comprising: first stop control means for automatically stopping the drive of the hydraulic motor for the crusher according to the detection value of the means. 2. A frame, a traveling means provided on the frame, a crushing device provided on the frame, a timer means for detecting time information relating to an operating time of the crushing device, and a detection value of the timer means. Accordingly, the self-propelled crusher is provided with a second stop control means for automatically stopping the drive of the hydraulic motor for the crusher. 3. The self-propelled crusher according to claim 1 or 2, wherein the first or second stop control means controls the flow of pressure oil from a hydraulic pump to the hydraulic motor for the crushing device. A self-propelled crusher, comprising valve control means for outputting a drive signal for switching a control valve for the device. 4. The self-propelled crusher according to claim 1 or 2, wherein the first or second stop control means drives an oil pressure pump for discharging pressure oil to the crusher hydraulic motor. A self-propelled crusher characterized by comprising injection control means for controlling fuel injection into the fuel cell. 5. The self-propelled crusher according to claim 3, wherein restart control means restarts the hydraulic motor for the crushing device stopped by the first or second stop control means under a predetermined condition. A self-propelled crusher equipped with. 6. The self-propelled crusher according to claim 5, further comprising charging detection means for detecting charging of the crushing device into the crushing device or preparation of charging, or presence of a charging person or charging machine. The self-propelled crusher, wherein the activation control means restarts the hydraulic motor for the crushing device stopped by the first or second stop control means according to the detection result of the charging detection means.