JPH0142408Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Technical Field of the Invention] The present invention relates to a work machine coupling device, and relates to a device that is interposed between a tractor and a work machine and connects them to each other.

[Technical background of the invention and its problems]

Conventionally, when connecting a working machine to a tractor, a structure in which a link mechanism of the working machine is connected to a suspension mechanism of the tractor has often been adopted.

Then, a sensor that detects the degree of inclination is fixed to the work equipment, and this sensor detects the running state of the work equipment to ensure safe running of the work equipment and to prevent inconveniences such as work irregularities from occurring. There is something that I tried to do.

However, with this type of structure, it is necessary to install a sensor on each working machine, or to install a sensor on the working machine to be used each time a working machine is replaced, which is uneconomical. There are disadvantages such as requiring many means to attach and detach,
Moreover, since the mounting position differs depending on the model of work equipment, the length of the sensor cord must be made with enough length to take this change into consideration, which also poses problems in handling the cord. .

[Purpose of invention]

This idea was created with these points in mind.
A coupling device is interposed between the tractor and the work machine to connect them to each other, and a tilt detection device common to various types of work machines is attached to this coupling device, thereby eliminating the need for installing tilt detection devices on each type of work machine. The purpose of this invention is to make it economical because the tilt detection device can be shared, and to save the trouble of attaching and detaching it, and also to eliminate the need for the length of the cord and the trouble of handling it. .

[Summary of the idea]

In this invention, the lower link attachment part of the work equipment and the lower link attachment part of the tractor are formed at the lower sides of the connecting frame formed in the shape of a mountain, and the upper link attachment part of the work equipment and the top link of the tractor are formed on the top of the connecting frame. The present invention is characterized in that a link attachment portion is formed and a tilt detection device is attached to this connection frame.

[Embodiments of the invention] Hereinafter, embodiments of the present invention will be described as shown in the accompanying drawings.

1 and 2, reference numeral 1 denotes a connecting frame bent into a mountain shape, and connecting plates 2 are integrally formed at the bottom of both sides of the connecting frame 1, and the connecting plates 2 are integrally formed on both sides of the connecting frame 1. A guide portion 3 inclined inward is integrally formed on one side of the plate 2 by bending. In addition, a lower link attachment part 6 for removably attaching the lower link 5 of the working machine 4 is provided horizontally protruding from the outer side of the lower end of the connecting plates 2 on both sides, and A lower link attachment portion 9 to which a lower link 8 of the tractor 7 is detachably attached is horizontally protruded from the lower end.

Further, an upper link attachment part 12 for detachably attaching the upper link 11 of the working machine 4 to the top part 10 of the connection frame 1 and the top link 1 of the tractor 7 are also provided.
Top link attachment part 14 to which 3 is detachably attached
is formed. The upper link attachment part 12 has a supporting protrusion 16 that protrudes parallel to the rear side of the connecting fitting 15, and a locking rod 17 is horizontally suspended between the supporting protrusions 16. configured, and
The top link mounting portion 14 is connected to the connecting fitting 1.
Support piece 1 protruding parallel to the front side of 5
8, and a plurality of locking holes 19 formed at predetermined intervals in the vertical direction of the support piece 18, and the locking holes 19 at selected positions. The top link 13 is attached to the top link 13 via a locking pin 20.

Further, a mounting plate 21 is integrally provided in a horizontal manner on the inclined part of one side of the connection frame 1.
A seat plate 22 having a plurality of selectively used through holes corresponding to the mounting holes drilled in the mounting plate 1 is superimposed on the mounting plate 21, and a tilt detection device 23 is mounted on the seat plate 22.
is arranged, and this inclination detection device 23 is installed on the seat plate 22.
The mounting plate 2 is attached to the mounting plate 2 through the seat plate 22 by a plurality of bolts 24 inserted from the through holes into the mounting holes of the mounting plate 21.
It is fixed at 1. The detection signal of this inclination detection device 23 is transmitted to the tractor 7 via a cord 25.
The output is output to a control device installed in the driver's seat, etc.

The working machine 4 is provided with a transmission 28 having an input shaft 27 in the center of the main body frame 26,
The lower links 5 are provided on both sides of the main body frame 26 to protrude forward, and locking fittings 29 in an inverted U-shape that are open downward are integrally attached to the tips of the lower links 5 on both sides, A handle 30 having a locking protrusion that protrudes and retracts into the opening of the locking metal fitting 29 to engage and release the lower link mounting portion 6 is rotatably supported by the locking metal fitting 29. Further, an inverted U-shaped locking fitting 31 is provided on the upper part of the transmission 28 to protrude toward the front of the upper link 11, and is integrally connected to the tip of the upper link 11 to lock and release the locking rod 17. installed. Further, a rotary working mechanism 33 is rotatably suspended horizontally at the lower part of the main body frame 26 via a chain case 32 and a bracket provided at both ends thereof, and this rotary working mechanism 33 has its output to the mission 28. They are interlocked and connected via an interlocking medium consisting of a shaft and a chain in the chain case 32. In the figure, 34 is a cover body that covers the upper part of the rotary working mechanism 33, 35 is a leveling plate that is elastically supported on the rear end of the cover body 34 so as to be able to move up and down, and 36 is attached to the lower links 5 on both sides. It is a gauge wheel.

In the structure configured in this way, the work machine 4
The locking fitting 29 of the lower link 5 and the upper link 11
Connecting frame 1
When the lower link attachment part 6 and the locking rod 17 are arranged, and these are lifted upward, the locking rod 17 fits into the upper locking fitting 31, and the lower link attachment part 6 is The locking protrusion protruding from the lower locking fitting 29 is pushed back outward against the elastic member, and is fitted into the locking fitting 29, and the elastic member is attached to the lower part of the lower link mounting portion 6. As a result, the locking protrusion that has returned to rotation protrudes and locks the lower link mounting portion 6. Further, the lower link 8 of the tractor 7 is attached to the lower link attachment portions 9 on both sides of the connection frame 1, and the lower link 8 of the tractor 7 is attached to the selected locking hole 19 in the top link attachment portion 14 at the top of the connection frame 1 via the locking pin 20. Install top link 13. Further, an input shaft 27 of a transmission 28 is connected to the output shaft portion of the tractor 7 via a universal joint A. Then, when the work implement 4 is towed by the tractor 7 and the input shaft 27 is interlocked with the output shaft portion of the tractor 7, the rotary work mechanism 33 is interlocked and driven.
3, the field is tilled and crushed soil. In this case, if the connecting frame 1 interposed between the tractor 7 and the work equipment 4 is tilted due to driving conditions, work conditions, etc.
This inclination situation is detected by the inclination detection device 23, and the inclination angle is converted into a detection signal, and this detection signal is output to a control device installed in the driver's seat or the like. The control equipment then compares and calculates the input signal with the reference travel angle, and uses the results to inform the driver of the current driving situation, such as whether it is in a safe driving condition, dangerous driving condition, or whether there is no problem with work. Notice. This allows the driver to control driving.

Next, in the embodiment described above, the case where the mounting plate 21 to which the inclination detection device 23 is attached was fixed to the connecting frame 1 was explained.
1 is not limited to these, and may be detachably attached to the connection frame 1. That is, for example, as shown in FIG. 3, a mounting recess 37 is formed at one end of the mounting plate 21, an insertion hole 39 is formed in the bent pieces 38 on both sides of the mounting recess 37, and the bent pieces 38 A semicircular engagement fitting 40 that engages with the one side slope of the connection frame 1 is fixed integrally to the inner edge of the mounting recess 37, and this engagement fitting 40 is attached to the one side slope of the connection frame 1. The U-shaped locking metal fitting 41 is inserted into the insertion hole 39 from the inclined part on one side opposite to the engaging metal fitting 40, and the threaded part 4 of the protruding end thereof is inserted into the insertion hole 39.
The mounting plate 21 may be attached to the connecting frame 1 by tightening a nut 43 to the coupling frame 1 via a washer 42.

Further, a hook 45 is provided on the connection frame 1 to removably lock a chain 44 as a support mechanism for supporting the universal joint A.
The chain 44 may be removed during work, and the chain 44 may be used as a support for the universal joint A when the connecting frame 1 is set.

Furthermore, although not shown, a tool box may be attached to the connection frame 1.

[Effect of idea]

According to the present invention, since a tilt detection device common to various types of work machines is attached to a connection frame that is formed independently of the work machines and tractors so that it can be connected to the work machines and the tractor, There is no need to install a detection device, there is no need to attach or detach the inclination detection device to various types of work equipment, and there is no need to consider the length of the inclination detection device cord or how to handle long cords. It is possible to reduce the cost of the work machine compared to the case where a detection device is attached, and therefore, it is possible to provide an economical and highly practical work machine coupling device.

[Brief explanation of drawings]

Fig. 1 is a side view of the working machine with the coupling device set on the working machine, Fig. 2 is a perspective view of the same working machine coupling device, and Fig. 3 is a tilt detection device in the working machine coupling device of another embodiment. FIG. 4 is a perspective view of the attachment structure, and FIG. 4 is a perspective view of a working machine coupling device of still another embodiment. DESCRIPTION OF SYMBOLS 1...Connection frame, 6...Lower link attachment part, 9...Lower link attachment part, 12...Upper link attachment part, 14...Top link attachment part, 44...
...Support mechanism.

Claims (1)

[Claims for Utility Model Registration] (1) A lower link attachment part of a working machine and a lower link attachment part of a tractor are formed at the lower sides of both sides of a connecting frame formed in a mountain shape, and the upper part of the working machine is formed at the top of this connecting frame. 1. A work equipment connection device, comprising a link attachment portion and a tractor top link attachment portion, and a tilt detection device is attached to this connection frame. (2) The work implement coupling device according to claim 1, wherein the coupling frame is provided with a support mechanism that supports the universal joint.