JPS5934246Y2 - tractor coupling device - Google Patents

Description

[Detailed Description of the Invention] The present invention consists of a pair of left and right connecting links installed between a tractor and a towing device, and a connecting device installed between each link and the tractor in order to prevent the connecting links from rolling. This invention relates to an alternative tractor coupling device.

Conventionally, connecting devices are generally installed across the connecting link and the tractor on each of the 9 and 11 sides of the connecting link, but because the left and right wheels are located adjacent to each other near the point where the link connects to the tractor, it is difficult to connect the links. The horizontal width for the link connection is limited, and on top of that, a connecting tool must be installed there, so the horizontal width for link connection has to be narrow, and it is not possible to sufficiently prevent the work equipment from rolling. , the strength against torsion was low.

In view of the above-mentioned points, the purpose of the present invention is to maximize the horizontal width of the connection link to the tractor to effectively prevent lateral shaking and to increase the strength against torsion. .

First, embodiments of the present invention will be described in detail based on the drawings.

A rotary tilling device 2, which is an example of a towing device, is interlocked and connected to the rear of the tractor 1, and a pair of left and right connecting links 3, 3 are installed across the tractor 1 and the tilling device 2, and are connected to a lift arm 4. The links 3, 3 are connected via rods 5, 5, respectively, and the tilling device 2 is configured to be raised and lowered by vertical drive so that it can be lifted when not in operation, so that the field can be tilled as it travels. It uses a riding-type tiller.

The connecting links 3, 3 have one end connected near both ends of a support shaft 7 which is horizontally suspended on the rear hitch 6 of the tractor 1, and between both connecting links 3.3 of the support shaft 7, and , brackets 8, 8 are externally fitted on both sides of the rear hitch 6, and a connector 10 configured to be extendable and retractable via a turnbuckle 9 is provided between each of the brackets 8 and the connecting links 3, 3. and said connector 10.1
The tension of the tiller 2 is adjusted to prevent the tilling device 2 from lateral shaking as it travels during work.

The brackets 8, 8 are bent such that their free ends bypass the rear part of the rear pitch 6 and go toward the center in the left-right direction of the aircraft, and the brackets 8, 8 and the connector 10 are bent. The position of the connection point is moved toward the center of the fuselage from both the left and right ends of the rear hitch 6, and the distance between the connection point position and the connection position of the connection link 3.3 to the support shaft 7 is made as wide as possible. has been done.

One end of a chain 12 is connected to a predetermined location of the rotary frame 11 of the tilling device 2, and on the other hand, a locking part 13 capable of locking the other end of the chain 12 is connected to the rear upper part of the tractor 1. With device 2 lifted, chain 12
It is constructed so as to mechanically prevent it from falling.

As shown in FIG. 3, a hook 14 is connected to one side of the rear hitch 6, and when the tilling device 2 is placed in a lowered working position, the chain 12 can be pulled from the locking portion 13. Replace it with the hook 14 located relatively close to it,
It is configured so that it can be stored in a state where it will not collide with the cover of the tilling device 2 and generate noise due to vibrations of the machine during work travel.

As shown in the above embodiments, the characteristic configuration of the tractor coupling device according to the present invention is that a left and right pair of left and right The connecting links 3, 3 and the connecting devices 10° 10 are installed between the links 3, 3 and the brackets 8, 8 attached to the support shaft 7, respectively, in order to prevent the connecting links 3, 3 from lateral shaking. In a tractor coupling device,
The mounting position of the brackets 8, 8 with respect to the support shaft 7 is set closer to the center in the left-right direction of the aircraft than the connection position of the connecting links 3, 3 with respect to the support shaft 7, and on both left and right sides of the rear hitch 6. Along with that bracket I-8,8
The connecting end of the connector 10.10 is bent toward the center in the left-right direction of the aircraft, bypassing the rear end of the rear hitch 6, so that the brackets 8, 8 and the connector 10.10
The position of the connection point with the rear hitch 6 is located closer to the center of the fuselage than both the left and right ends of the rear hitch 6, and this configuration provides the following effects.

In other words, due to the attachment of the connector 10.10, the left and right width of the connecting links 3, 3 for connecting to the tractor 1 is not narrowed, and the connecting links 3, 3 are connected at positions adjacent to the left and right wheels. The horizontal width of the connection can be made as large as possible without being limited by the horizontal width of the rear hitch 6, and it has become possible to effectively prevent the working device 2 from rolling, and to increase the strength against torsion. .

This is particularly useful when applied to small-sized tractors that inherently have narrow left and right wheels.

[Brief explanation of drawings]

The drawings show an embodiment of the tractor coupling device according to the present invention, in which Fig. 1 is a partially omitted side view of a riding cultivator, Part 2 is a plan view of the main parts, and Fig. 3 is a perspective view of the main parts. It is. 1...Tractor, 2...Working device, 3
...Connection link, 6...Rear hitch,
7... Support shaft, 8... Bracket, 10
・・・・・・Connector.

Claims (1)

[Scope of utility model registration request] A pair of left and right connecting links 3, 3 are installed between the support shaft 7 horizontally suspended on the rear hitch 6 of the tractor 1 and the towing device 2, and links 3, 3 are installed to prevent the connecting links 3, 3 from rolling. 3 and the bracket 8 attached to the support shaft 7.
, 8 and a coupling device 10.10 installed on the support shaft 7.
, 8 to the connecting link 3, 8 relative to the support shaft 7.
It is set closer to the center in the left-right direction of the aircraft than the connection position of No. 3, and on both left and right sides of the rear hitch 6, and the ends of the brackets 8, 8 on the connection side to the connection tools 10. By bypassing the rear end of the rear hitch 6 and bending it toward the center in the left-right direction of the fuselage, the connection point between the brackets 8, 8 and the connectors 10 and 10 is moved closer to the center of the fuselage than both left and right ends of the rear hitch 6. A tractor coupling device characterized in that it is displaceable.