JPS60206743A - Remote control device in powdered material truck - Google Patents

Abstract

PURPOSE:To reduce worker's labor, by providing operating means capable of controlling a powdered material discharging device as a whole at a rear position of a powdered material storing tank and at an end portion of a discharging cylinder provided outside of the tank for discharging a powdered material out of the tank. CONSTITUTION:When an emergency arises in operation where a worker fills a silo 18 with a feed at the top of the silo 18, the worker operates an emergency stop switch in an operation box 16 to stop all of the operation. Upon arising of the emergency, another emergency stop switch in an operation box 15 may be also operated on the ground thereby to stop all of the operation. In the case that the silo 18 is substantially fully filled, a conveyor stop switch is operated to supply a residual feed remaining in discharging cylinders 7 and 10 to the silo 18.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a remote control device for a powder discharge device in a powder transport vehicle.

Generally, a powder transport vehicle that transports powder and granular materials such as feed is equipped with a powder storage tank on the vehicle frame, and the powder and granular materials loaded in the storage tank are discharged one by one to the outside. However, a screw con-hair is installed in the longitudinal direction at the bottom of the tank, and an 11 tl conveying section is formed inside the tank using G, which is connected to the rear end of the tank conveying section, and a screw con-hair is installed inside tGj. A conveying cylinder made of a granular material is erected, and a discharge cylinder made of a screw container is provided in communication with the upper end of the progressive cylinder so as to be able to rise and fall freely. A device in which a conhair is rotated and discharged from the tip of a discharge tube into a silo or the like is in use.

To control the powder discharge device in this type of powder transport vehicle, the entire screw conveyor is normally operated and stopped by a control lever provided at the rear of the tank. , Operator - When a worker climbs onto the silo to monitor the feed (powder) being filled into the silo, such as when manually loading feed into the silo, the screw container In order to stop the rotation, the operator had to step down from the silo and go to the rear of the tank to operate the 1ζ control lever, which was extremely troublesome for the operator.

This invention has been made in consideration of the above points, and includes the rear position of the powder storage tank and the tip of the discharge pipe outside the tank for transporting and discharging the powder and granule from the inside of the storage tank to the outside. The purpose of the present invention is to provide an operating means that can control all of the powder and granular material discharge equipment at the same position, and to enable the operating means to rotate and stop all the screw conveyors, thereby reducing the labor of the operator. The present invention aims to provide a remote control device for a powder transport vehicle.

Embodiments of the present invention will be described below based on the drawings.

In FIG. 1, reference numeral 1 denotes a granular material transport vehicle for transporting various kinds of feed, etc., and a granular material storage tank 3 is mounted on a vehicle frame 2.

[W] The lower part of the powder storage tank has an inverted triangular cross-section with both sides turned inward, and a screw cone hair 4 connected to a hydraulic motor 5 is provided in an elongated direction at the bottom of the tank 3 to convey the material within the tank. It forms part 6.

Reference numeral 7 denotes a conveying cylinder installed rearward of the powder/granular material storage tank 3, whose bottom end is communicated with an ift feeding section 6 inside the tank, and a screw conveyor tube 8 connected to a hydraulic motor 9 is installed inside. .

Reference numeral 10 denotes a discharge tube connected to the upper part of the conveyor tube 7, which is equipped with a screw conveyor 1■ connected to a hydraulic motor 12, and
An undulation cylinder 13 is disposed between the feed cylinder 7 and the cylinder 7.

Reference numeral 14 denotes a bellows-shaped outlet tube 15 which is foldably constructed at the tip of the discharge tube 10. Note: Operation hook installed at the rear of the powder and granule collection tank 3, 16 is the tip Xg of the discharge pipe IO
1 is an operation box provided at the tip of the discharge 1ti10.

In the figure, 18 is a silo into which feed is fed.

FIG. 2 shows an oil footpath circuit for operating the hydraulic motor and the luffing cylinder.

In the figure, 19 is a first directional control valve that controls the rotation of each of the hydraulic motors 5, 9°12, and a coil 5QL-At
, 5QL-Bl.

Reference numeral 20 designates a second directional control valve that controls the extension of the undulating cylinder 13 and stops only the hydraulic motor 5 of the tank transport section 6, and has a coil 5QL-A2.5QL-82.

These first. The second directional control valves 19 and 20 are four-way ball position switching valves in which the supplied hydraulic pressure passes through a carryover circuit in their neutral position, and manual operation is also possible using operating levers 21 and 22, respectively. do.

Reference numeral 23 designates a third directional control valve for controlling the contraction of the undulation cylinder 13, which includes an electromagnetic control valve 23a having a coil SQL, a switching cock 32, which will be described later, and a check valve 23b, which are connected in parallel with the control valve 23a. It is composed of

24 is a hydraulic pump, and 25 is an oil tank.

The hydraulic pump 24 is connected to the first pump by a pipe 26. A second solenoid valve 19, 20 is connected, and the pressure oil generated by the oil pump 24 is controlled to a normal pressure value through a control valve 27 provided in the middle of the piping.

When one coil 5QL-Al of the first directional control valve 19 is energized 1llll, the valve spool on this side is switched, and the pipe 26 and the secondary pipe 28 are connected and are in line. Connected oil field motor 12. 9. Pressure oil flows sequentially to each screw cone hair 11. Rotate 8°4.

Note that when the excitation of the coil 5LO-At is released, the valve spool moves to the neutral position due to the elasticity of the spring.

In the diagram, 2! ] is a control valve connected between the hydraulic motors 9 and 5, and is pilot operated by the oil pressure between the hydraulic motors 12 and 5. 30 is a return oil pipe line.

One-force coil 5LO-A2 of the second directional control valve 20
When the valve spool on this side is switched, the piping 26 and the piping 31 on the secondary side communicate with each other, pressure oil flows into the piston back chamber of the undulating cylinder 13 and expands, and the discharge pipe 10 is expanded. The undulating cylinder 13 is erected from its storage position to its use position, and when the undulating cylinder 13 is contracted, the solenoid valve 23a is switched by energizing the coil S of the solenoid valve 23a installed in the middle of the piping 31 to switch the ζ pressure. Although the oil is removed, the solenoid valve 23
Pressure oil can also be removed from C by manually operating the switching cock 32 connected in parallel to a.

Next, the power rotation control valve 19 is switched by energizing the coil 5LO-AI of the first directional control valve 19, and each hydraulic motor 12. 9. 5 is rotating, when the other coil 5LO-82 of the second directional control valve 20 is energized and energized, the valve spool on this side switches and branches off from the piping connecting the hydraulic motors 9 and 5. The pipe 33 and the return oil pipe 30 communicate with each other, and no pressure oil flows into the hydraulic motor 5, so that only the screw conveyor 4 stops rotating.

34 is the flow side of the third directional control valve 23.
It is a throttle disposed in a bypass circuit 31' branched from the piping 31, and is used to control the second direction control (when the J11 valve 20 is in the neutral position and the first direction control valve 19 is not switched to one force). , high pressure oil leaks through the spool of the second directional control valve 20 and reaches the pipe 31, thereby preventing the undulating flick 13 from expanding.

FIG. 3 shows an electric circuit diagram for controlling the hydraulic circuit 1.

In the figure, 5111 is a power switch, SW2.
SW3 is two emergency stop switches connected in series, each of which is followed by the following circuit.

(It has two conveyor stop switches SW4 and SW5 consisting of 11-cut switches SW4 and SW5, and each time one of the switches is switched, the second direction 1rll fJ is set.
The current is applied to valve II valve 20, valve port 0, 5QL-82, and this energization causes circuit A0 (2+ normally open relay contact r2 to supply 111j to relay R3). 1!Circuit B0 (3) leading to the coil 5QL-AI of the coil 5.S
W7 and when operating either of the switches,
Two i! connected in series to these! a Normally closed conveyor stop hisswitch SW8. 3 relays R via SW9
1.I? 2. Circuit C0 side that energizes li4, relay u
1 relay contact r1 is switch SW6.

Configures a 5W7 holding circuit.

(4) Above relay■? 3 normally open relay contact r3,
Connect the normally open relay contact r4 of relay R4 in series,
Thereafter, there are two discharge cylinder standing switches S pull OS A1, and when one of the switches is operated, a circuit D0 that energizes the coil SQL A2 of the L two-way control valve 20 (5) L circuit D0 Branches from the connection point between the relay contact r4 and the discharge stack upright switch 5WIO, S old l, and operates two discharge stack fall down switches 5W12, 5W13, and when one of the switches is operated, the third direction control is activated. The circuit E0 that energizes the coil SQL of the valve 23. In the figure, PLI is a pilot lamp that lights up when the power switch SWI is closed.
L2 is a pilot lamp that lights up while the coil 5QL-82 of the first directional control valve ■9 is energized.

However, the above-mentioned power supply switch Nona SWI is installed in one construction box 5 provided at the rear of the powder storage tank 3.

Non-electric stop jade switch SW2, Conhair stop jade/nona SW5, Conhair rotation switch needle 7, conveyor stop switch SW9, discharge tube upright switch 5WII, and 4 non-exit 16J down switch (1 switch 5W13) are installed, and the discharge tube The operation hook 17 at the tip has the above conveyor eye ¥1, Suinona or 4, Conhair rotation switch needle 6,
Conhair stop jade tip SW8, discharge tube upright switch 5WIO1, and discharge tube fall switch 5W12 are provided, and the operation hook 16 near the tip of the discharge tube (
- One or three non-electric stoppers are installed.

Also number 1. A control lever 21.22 for manually operating the second directional control valve 19.20 and a first valve 32 for reducing the undulation cylinder 13 are both disposed on the control hook 15.

Next, the operation of the device described below will be explained.

The positions of the contacts of each switch and each relay on the work start surface are as shown in FIG.

Now, when filling the feed (powder) in the PA granule storage tank 3 into the silo 18, the operator should fill the silo 18 with the feed (powder) in the PA granule storage tank 3.
8, if you operate one of the discharge stack stand-up switches 5WIO and S411 of the operation boxes 15 and 17, the relay contact r is connected to the coil 5QL-A2 of circuit 1].
3. A current flows through r4 to shift the second directional control valve 20 to the left position. This causes the pressure oil to flow into the undulating cylinder 13.
is supplied to the discharge tube 1 by extension of the undulating syringe 13.
0 stands up from the traveling storage position.

At the same time, the discharge tubes 7 and 10 are rotated by the rotating device, and the discharge tube 14 is lowered into the silo 18.

Next, Conhair rotation switch SW6. When either SW7 is operated, relay contact r2 of circuit B is closed by energizing relay 172 of circuit C, and coil 5QL-
The elbow is energized to switch the first force control valve 19. As a result, pressure oil sequentially flows to the hydraulic motors 12, 9°f5, and each screw conveyor 11. The feed in the powder storage tank 3 is filled into the silo 18 by rotating 8°4.

Incidentally, while the feed is being filled into the silo 18, the operator climbs on top of the silo 18 and monitors how the feed is being filled into the silo 18.

Next, when the silo 18 is full, the conveyor is stopped by SW8. When one of SW9 is operated, the current to relay R2 of circuit C is cut off, relay contact r2 of circuit [3 is opened, the current to coil 5QL-elbow is cut off, and the first directional control valve 19 is placed in the neutral position with the spring on. Return to I'-1 seju. At this point, the supply of pressure oil to the hydraulic motor 12°9.5 is cut off, and the rotation of all screw conhairs LL8.4 is stopped.

11 “Jin” – Kibe 1. The switching operation of the second directional valve control valve 19, 20 is performed using the operating lever at the 1st box 15.
Of course, this can also be done manually by operations 21 and 22.

As shown above, a worker is climbing into silo 18 and feeding silo 1]
If an emergency situation occurs during which the work is being filled into the silo 18, and the work must be stopped immediately,
The operator presses the non-stop switch S on the operation box 16.
When Wa is operated, the current flowing through all circuits is cut off and all operations are stopped.

When this emergency situation occurs, all operations can also be stopped F by operating the non-electronic stop SWZ of the operation box 15 even on the ground 1-.

In addition, when the feed from the powder storage tank 3 is put into the silo 18 and the silo is almost full for one day, when either of the container stop switches SW4 and SW5 is operated, the coil 5QL- of circuit A is activated. At 82, the second directional control valve 20 is switched over. As a result, after the 'ζ pressure oil leaves the hydraulic motor 9, it flows through the solenoid valve 2o to the return pipe 30, and does not flow to the hydraulic morph 5, but inside the tank (general transport Q1% etc. screw conveyor 8). The rotation of the chisel stops.Therefore, the feed reverberating inside the conveying cylinder 7 and IO is supplied to the rhinoceros LJ18.

At this time, the power to -relay P3 is cut off, and relay contact r
3 is open, the circuit and E are in the open state, and the ejection pipe 10 cannot be raised or operated inadvertently.

As described above, this invention is mounted on a vehicle frame, and
1) When feeding feed into a silo using the conveying means, for example, at the tip of the conveying means, the operator must Of course, even if one remains in the silo, all operations in the event of an emergency occur, such as intermittent work by controlling the rotation of some of the screw con-hairs during work, and starting all screw con-hairs. Since all controls such as stop and stop can be performed uniformly, the work can be carried out by humans.
It has an excellent effect of increasing efficiency.

[Brief explanation of drawings]

The drawings show an embodiment of the present invention, and FIG. 1 is a side view of a powder and granular material transport vehicle in a state where powder and granular material is being introduced into a silo;
Figure 2 is a hydraulic circuit diagram, and Figure 3 Ig+ is an electrical circuit diagram. 1... Powder transportation 1 general vehicle, 2... Vehicle frame, 3... Powder storage unit, 4, 8.11... Screw conhair, 5.9, 12... Hydraulic motor , 6... In-tank transport section, 7... IT sending tube, 10... Discharge tube, 13...
・Luffing cylinder, 14... Derivation cylinder, 15.16.17
...Operation hook, 18...Silo, 19...First direction control valve, 20...Second direction! li control valve, 21
．． 22... Operation lever, 23... Third directional control valve,
. 24...Hydraulic pump, 25...Oil tank, 26,2
8, 31.33... Piping, 27.29... Control valve,
30...Return oil pipe line, 32...Operation valve, 34...
Bypass circuit.・, -1・n52. Written amendment to the procedure (voluntary) April 27, 1980

Claims (1)

[Claims] (1) A powder storage tank mounted on the vehicle frame 2, and a first tl disposed at the bottom of the storage tank! a conveying means, and the first
a second conveyance means communicated with the conveyance means; a 31st general conveyance means communicated with the second conveyance means and movable up and down by an undulating cylinder; a plurality of hydraulic motors driving these conveyance means; a first directional control valve that controls the rotation of the motor; a second directional control valve that controls the extension of the undulating cylinder and stops only the hydraulic motor of the first conveyance means; and a third directional control valve that controls the contraction of the undulating cylinder. In a powder transport vehicle equipped with a directional control valve, an operating section for each of the directional control valves is disposed at the tip of the third conveying means, and the operating section includes a first motor for rotating all hydraulic motors. a second switch that stops only the hydraulic motor linked to the first II sending means, a third switch that extends the undulation cylinder, and a fourth switch that reduces the undulation cylinder.
A remote control device for a powder transport vehicle, characterized in that a switch and a fifth switch for stopping the rotation of the full hydraulic motor are arranged. (2) The first and second directional control The powder transport vehicle according to claim 1, wherein the valve is constituted by an electromagnetic control valve that can be manually controlled, and the manual operation part thereof is disposed at the rear of the powder storage tank. A remote control device for +31 +ii J Article 3, characterized by comprising a three-way control valve cock, an electromagnetic control valve connected in parallel to the switching cock, and a check valve that only allows pressure oil to flow to the undulating cylinder. A remote control device for a powder transport vehicle according to claim 1. (4) A bypass circuit to an oil tank is branched downstream of the Naenoku valve constituting the third directional control valve, and the bypass circuit is branched to an oil tank. 4. A remote control device for a powder transport vehicle according to claim 3, wherein the circuit is provided with a throttle.