JP2000145953A - Remote operating device of on-board working machine installed on tractor - Google Patents

Abstract

PROBLEM TO BE SOLVED: To improve workability and lessen a worker's burden by interlock connecting an operating lever on the on-board working machine side to a forward-backward shift mechanism on the tractor side, and switching the forward and backward movement of the tractor by the operation on the on-board working machine side in the tractor where the on-board working machine is installed on the rear part of the machine body. SOLUTION: An on-board working machine such as a rear shovel or the like installed on the rear part of the machine body of a tractor is provided with a seat 12 and an operating part, in the case of operating the operating lever 14 of the operating part to this side, a cable 22 is towed, thereby oscillating an oscillating arm 21 integrated with a support shaft 20 of a forward-backward pedal 9 provided on a driver's seat 12 of the tractor. By the counter-clockwise rotation of the support shaft 20, the tractor is moved forward through HST driving device, that is, seeing on the on-board working machine side, the working position of the on-board working machine is moved backward. On the other hand, in the case of operating the operating lever 14 to the counter-this side, reversely the working position of the on-board working machine is moved forward. Thus, the tractor can be moved forward and backward by remote operation so as to improve work efficiency.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a tractor having an on-board work machine equipped with a worker's seat and an operating section mounted on the rear of the fuselage. The present invention relates to a remote control device for a boarding work machine capable of performing the following.

[0002]

2. Description of the Related Art Conventionally, in a tractor used for various field works, various works such as plowing, leveling, and grooving are performed by a working machine mounted on a rear portion of the tractor. When a boarding work machine for performing related operations is provided, an operator who travels and operates the tractor usually moves to the boarding work machine side to operate the work machine.

However, when working in a field using the above-mentioned work machine, it is necessary to move the tractor forward and backward when changing the work position of the work machine, and therefore, the tractor is seated on the work machine side. The worker must move to the tractor side to switch between forward and backward, and in field work involving frequent changes in work position, there has been a problem of reduced workability and increased burden on the worker.

[0004]

SUMMARY OF THE INVENTION The present invention has been made in view of the above situation, and an object of the present invention is to remotely control the forward and backward movement of a tractor while sitting on a boarding work machine. It is an object of the present invention to provide a remote control device of a boarding work machine mounted on a tractor capable of improving workability and reducing a burden on an operator.

[0005]

In order to solve the above-mentioned problems, the technical means adopted by the present invention is a tractor in which a riding work machine equipped with an operator's seat and an operation unit is mounted on a rear part of the fuselage. The tractor-side forward / reverse transmission mechanism is connected to an operating lever provided on an operating section of the boarding work machine in an interlocking manner, and the tractor is configured to switch back and forth by operation from the boarding work machine side. It is assumed that.

[0006]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The configuration of the present invention will be described in detail with reference to an embodiment shown in the drawings. In FIG. 1, reference numeral 1 denotes a tractor. The tractor 1 has a front excavator 5 which can be moved up and down and is mounted on a front portion of a body frame 4 having front and rear wheels 2 and 3, and an operation handle 6 and a driver's seat 7 are provided. Operation unit 8
A forward / reverse pedal 9 connected to a trunnion shaft of an HST drive device (not shown) is disposed on a floor surface 8a of the vehicle.
At the rear of the machine frame 4 is mounted a riding work machine 11 equipped with a rear shovel 10.

[0007] The riding work machine 11 includes a rear shovel 10.
The operator's seat 12 is arranged to face the driver's seat 7 provided on the operation unit 8 on the rear side, and the rear shovel 1 is located behind the operator's seat 12.
A drive lever 13 for raising and lowering the tractor 1 and an operation lever 14 for switching the forward and backward movement of the tractor 1 described later are arranged. The operator gets into the machine 11 and sits on the seat 12 in the direction opposite to the traveling direction of the tractor 1, and operates the levers 13 and 14 to perform work on the rear shovel 10.

Here, the tractor 1 and the front and rear excavators 5 and 10 are driven by an HST drive device (not shown) provided in the transmission case 15 as a drive source, and the circulation stays in the transmission case 15. The driving oil is discharged to the outside through a drain mechanism 16 provided on the side surface of the used waste oil.

That is, as shown in FIG. 3, the drain mechanism 16 includes a hollow cylinder 17b having a drain hole 17a formed in a part of the outer peripheral surface thereof on a case side surface 15a located below the transmission case 15. The outer side plate 17c is fixed to the case side 1 by a fixing bolt 18.
5a, when discharging waste oil, the cylinder 17b
To the outside, and drain hole 17a into case side 15
If it is exposed downward from a, the waste oil can be discharged directly below, and when the drain bolt screwed to the case side surface 15a is removed as in the conventional case, the waste oil scatters outward and The removal of the waste oil can be performed quickly without soiling a certain mechanism member or the rear wheel 3 or the like. 17d is a stopper provided on the cylinder 17b. In addition, instead of the configuration of the drain mechanism 16,
As shown in FIG. 4, a cylinder 17b integrally formed with an outer surface plate 17c is fitted to the case side surface 15a so as to be able to advance and retreat, and the outer surface of the outer surface plate 17c is connected to the case side surface 15a.
a into the outer surface plate 17
It may be configured to be fixed to c.

On the other hand, as shown in FIG. 5, the forward / reverse pedal 9 is provided with a front pedal plate 9b and a rear pedal plate 9c at the front and rear ends of a pedal arm 9a, and a substantially central position of the pedal arm 9a. The front pedal of the forward / reverse pedal 9 which is supported by a support shaft 20 linked to a trunnion shaft of an HST drive device (not shown) so as to be tiltable forward and backward, and which is held at the neutral position A when the tractor 1 travels. When the plate 9b is stepped on in the direction of the solid line arrow, the support shaft 20 is rotated counterclockwise in the drawing in connection with this operation, and the HST drive device causes the tractor 1 to travel in the forward direction, and the rear pedal plate 9c is moved. When the stepping operation is performed in the direction of the dotted arrow, the support shaft 20 is similarly rotated clockwise to
The tractor 1 is switched to reverse running via a T drive.

A downward swing arm 21 is fixed to the support shaft 20, and a push-pull push-pull cable 2 having one end connected to the swing tip of the swing arm 21.
2 is connected to the pivoting end 14a of the operating lever 14 on the side of the boarding machine 11, and the seat 12 of the boarding machine 11 is connected.
A remote operation device 23 that switches the tractor 1 forward and backward while the worker sitting on the vehicle holds the work operation posture is configured. Reference numeral 24 denotes a support shaft that rotatably supports the operation lever 14.

Since the present invention is configured as described above,
When performing grooving work in the field with the on-board work machine 11 mounted on the tractor 1, an operator first moves the tractor 1 to a predetermined work position, stops the tractor 1, and sits on the seat of the on-board work machine 11. Drive the rear shovel 10 in the posture with the drive lever 1
3 and other operation tools (not shown) are used to perform a desired grooving operation.

When it is necessary to move the tractor 1 forward and backward in order to change the working position of the boarding work machine 11, when the operating lever 14 is operated in the direction of the solid line arrow, it is connected to the rotating tip 14a. The push-pull cable 22 is pulled, and the swing arm 21 fixed to the support shaft 20 of the forward-reverse pedal 9 is similarly swung in the direction of the solid arrow, and the support shaft 20 is turned counterclockwise in the drawing. As a result, the tractor 1 moves backward in the forward direction, that is, when viewed from a worker sitting on the seat 12 of the riding work machine 11, via an HST drive device (not shown).

When the operating lever 14 is operated in the direction of the dotted arrow, the push-pull cable 22 is pushed and the swing arm 21 swings in the direction of the dotted arrow, and the clockwise rotation of the support shaft 20 causes the HST (not shown) to rotate. The drive device moves the tractor 1 in the reverse direction, that is, the working position of the riding work machine 11 moves forward when viewed from the worker of the riding work machine 11.

Here, the operator seated on the riding work machine 11 can pull the operating work machine 11 backward (the tractor 1 moves forward) by pulling the operating lever 14 in the direction of the solid line arrow in the operating posture. Pushing in the direction of the dotted arrow allows the tractor 1 to move forward (the tractor 1 moves backward). Therefore, the forward / reverse pedal 9 on the tractor 1 side and the operation lever 14 on the boarding machine 11 are interlocked and connected via a push-pull cable 22. However, the forward and backward movement as viewed from the boarding work machine 11 can be quickly performed without any change in the operational feeling of a normal moving vehicle.

FIG. 6 shows a case where hydraulic cylinders 25a and 26a are employed in place of the push-pull cable 22 of the above embodiment. In this configuration, the rods 25b of the hydraulic cylinders 25a and 26a extend and retract. 26b is connected to the swing arm 21 and the operation lever 14, respectively, and the forward / backward movement pedal 9 on the tractor 1 side from the boarding work machine 11 side is moved by hydraulic oil in / out movement by hydraulic pipes 27 and 28 disposed therebetween. It is configured to be controlled by. Reference numeral 29 denotes a compression elastic machine which is provided in an oil chamber defined by valves 25c and 26c provided on the retractable rods 25b and 26b.
26c is returned to the neutral position.

When the operating lever 14 is operated in the direction indicated by the solid arrow in the above configuration, the retractable rod 26b of the hydraulic cylinder 26a protrudes, and the pressure oil moves in the hydraulic pipes 27 and 28 in the direction indicated by the solid arrow. And hydraulic cylinder 2
In 5a, the inflow and outflow of the pressurized oil from the hydraulic pipe 28 and the pressurized oil to the hydraulic pipe 27 are performed simultaneously, so that the retractable rod 25b is retracted and fixed to the support shaft 20 of the forward / backward movement pedal 9. The moving arm 21 is swung in the direction of the solid line arrow, and the support shaft 20 is rotated in the counterclockwise direction in the drawing, so that the tractor 1 travels in the forward direction via an HST driving device (not shown). 14 is operated in the direction of the dotted arrow, the retractable rod 26b retracts, whereby hydraulic oil flows into the hydraulic cylinder 25a from the hydraulic pipe 27 and flows out to the hydraulic pipe 28, and the retractable rod 25b As the swing arm 21 swings in the direction indicated by the dotted arrow through the projection operation of the shaft, the support shaft 20 rotates clockwise, and the tractor 1 is switched to traveling in the reverse direction via the HST drive device.

When the riding work machine 11 is not used in the above configuration, the forward / backward pedal 9 can be used solely by simply removing the hydraulic pipes 27 and 28 and directly connecting the oil ports of the hydraulic cylinder 25a indicated by dotted lines. The forward / reverse switching of the tractor 1 necessary for normal traveling can be performed by the depression operation.

[0019]

In summary, the present invention relates to a tractor in which a work machine having a worker's seat and an operation unit is mounted on the rear part of the fuselage. The operation lever provided on the operation unit is interlocked and connected so that the tractor can be switched back and forth by operation from the on-board work machine side.Thus, despite the simple structure, the operator moves to the tractor side one by one. The operator sitting on the side of the onboard work machine can move the tractor forward and backward while holding the operation standby posture without performing forward / backward switching operation of the aircraft, thereby improving the efficiency of work using the onboard work machine. This is an extremely useful novel effect that can be improved.

[Brief description of the drawings]

FIG. 1 is an overall side view of a tractor having a front shovel and a rear shovel.

FIG. 2 is an enlarged side view of a main part showing a configuration of a rear part of the tractor.

FIG. 3A is a sectional view of a main part of a drain mechanism.
(B) is a principal part sectional view showing a state where the cylinder is drawn out.

FIG. 4A is a sectional view of a main part of a drain mechanism of another example. (B) is a principal part sectional view showing a state where the cylinder is drawn out.

FIG. 5 is an operation explanatory view showing an interlocking relationship between a forward-reverse pedal and an operation lever.

FIG. 6 is an operation explanatory diagram showing another interlocking relationship between the forward / reverse pedal and the operation lever.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Tractor 9 Forward-backward pedal (forward-backward transmission mechanism) 11 Boarding work machine 12 Seat 14 Operation lever 23 Remote control device

 ────────────────────────────────────────────────── ─── Continuing on the front page (72) Inventor Yoshihiro Kano 667, Iyacho, Oji-machi, Higashi-Izumo-cho, Yatsuka-gun, Shimane 1 F-term in Mitsubishi Agricultural Machinery Co., Ltd. (Reference) 2B034 AA06 BA02 BA06 BA07 BC06 BD04 BD08 3J067 AA01 AB01 BB05 DA63 GA14

Claims (1)

[Claims] 1. A tractor in which a riding work machine having a worker's seat and an operation unit is mounted on a rear part of a fuselage, an operation lever provided on an operation unit of the riding work machine in a forward / reverse speed change mechanism on the tractor side. A tractor-mounted remote control device mounted on a tractor, wherein the tractor is mounted on the tractor so that the tractor can be moved forward or backward by an operation from the riding work machine.