JPH0633761Y2 - Towing work machine connected to the tractor - Google Patents

Description

[Detailed description of the device]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a working machine towed by a tractor, and particularly to a coupling device that requires power transmission.

[Prior art]

For a traction device that requires this kind of power, please see
-19548 is known, but this invention relates to a beet harvester, in which a tractor pulls a bogie frame to dig,
It is to be pulled up, transferred and stored.

[Problems to be solved by the device]

In the above-mentioned conventional reference, there is disclosed a connection technology for making it possible to advantageously raise and lower the ground work unit, but this device has a large turning radius in a field, and particularly in a small plot field, a large headland area is required. Therefore, the field efficiency was poor.

[Means for solving the problem]

In order to solve the above problems, the present invention fixes a tractor side end of a towing rod having a connecting bar having a pair of lower pins and a bearing having front and rear relay shafts to the connecting bar, A joint having a vertical pivot portion is fixed to the side of the work implement of the rod to form a hitch frame, the lower pin is connected to the lower link end of the tractor, and the joint is fixed to the tractor side of the work implement frame. An intermediate shaft having universal joints at both ends is mounted between the tractor PTO shaft and the bearing portion, and between the bearing portion and the input portion on the working body side, and the bearing portion and the working body body are mounted. The present invention provides a towing work machine connected to a tractor, characterized in that a bending point of the joint is arranged substantially in the center between input parts.

[Action]

When the field work is started by the towing work machine in which the hitch frame body of the present invention is attached to the rear part of the tractor, the power transmission from the tractor PTO is once relayed to the input section on the work machine side by the bearing section above the hitch frame body. Transmitted. At this time, the universal joint stretched over the bearing portion and the input portion on the working machine side is bent when the tow rod swings from the joint bending point to the left and right. And since the bending point is arranged in the middle between the bearing and the input on the working machine side, the universal joint can be bent at an equal angle to transmit rotation at a constant speed without causing a gear squeak and smoothly. Can tow.

【Example】

The configuration will be described based on the executed drawings. Reference numeral a denotes a rear portion of the tractor, and the hitch frame body d serves as a storage portion c and an excavation portion b.
It is a towed digger. A lower link 1 is connected to a hydraulic arm 4 at the rear of the tractor, and a hitch frame body d is attached by a lower pin 6. The hitch frame d is composed of a connecting bar 2 and a towing rod 3, and stoppers 17 are provided on both sides of the connecting bar 2 so as to abut against the lower edge of the lower link 1 below the lower pin 6. A front end of the towbar 3 is fixed to the connecting bar 2 and a pipe frame 9 is provided via a joint 7 having a vertical pivot portion at the other end on the working machine side.
Connected to. Reference numeral 5 denotes a bearing portion provided on the tow rod 3 having bearing ends in front and rear. The excavation part b has an excavation body 15 supported by a vertical rod 14 at the lower front portion of the machine frame 8, and a beater wheel 16 is provided so as to be inclined rearward of the excavation body 15. The beater wheel 16 is formed of a star-shaped rubber material, and the protrusions of the beater wheel 16 that are arranged in front and rear are overlapped with each other. An interlocking rod 19 linked to an eccentric cam is connected to the vertical rod 14 to vibrate the excavated body 15. Reference numeral 11 denotes an input part, which is intermediately supported by the first intermediate shaft 20 by the first intermediate shaft 20 from the tractor and then transmitted through the second intermediate shaft 21. The horizontal shaft is mounted on the pipe frame 9.
Drive twelve. The pipe frame 9 is fixed to the side plate 10 and is integrally formed with the machine frame 8. The mounting point of the pipe frame 9 on the working machine side to which the joint 7 is connected is made to project from the input shaft point of the input section 11, and is configured to be bent substantially in the middle of the bearing section 5. The storage part c is composed of an elevator conveyor facing the rear end of the beater wheel 16, a harvesting platform for mounting a storage bag and a vertical lifting device for the harvesting platform. Numeral 22 is a coulter gauge wheel, which keeps the cutting and cutting depth of weed foliage constant. FIG. 3 is a state diagram in which the excavation part b is raised when the hitch frame body d is raised in the pulling operation to be connected in this embodiment. In the present embodiment, not only the right and left sharp turns in plan view but also the hitch frame body d for transmitting power is capable of operating in a wide range in the vertical direction.

【effect】

Since the towing work machine configured to transmit the power to be connected to the tractor is configured as described above, the power transmission is smooth even in a sharp turn, so that work in a narrow field can be performed to the utmost.

[Brief description of drawings]

 Fig. 1 is a plan view of the present invention. Fig. 2 is a side view. Fig. 3 is a side view of a hitch frame when it is lifted. A is a tractor rear part, b is a digging part, c is a storage part, and d is a hitch. Frame 1 is a lower link, 2 is a connecting bar, 3 is a traction rod, 4 is a hydraulic arm, 5 is a bearing part, 6 is a lower pin, 7 is a joint, 8 is a machine frame, 9 is a pipe frame, 10 is a side plate, 11 is an input part, 12 is a horizontal shaft 13 is a support shaft, 14 is a vertical rod, 15 is an excavated body, 16 is a beater wheel, 17 is a stopper, 19 is an interlocking rod, 20 is a first intermediate shaft, 21 is a second intermediate shaft, 22 is a coulter gauge wheel.

Claims (1)

[Scope of utility model registration request] 1. A tractor side end of a towing rod having a connecting bar having a pair of lower pins and bearings having front and rear relay shafts is fixed to the connecting bar, and the towing rod has a working machine side end. To form a hitch frame by fixing a joint having a vertical pivot part to the lower part, connecting the lower pin to the lower link end of the tractor, and fixing the joint to the tractor side of the working machine frame, the tractor PTO shaft. And an intermediate shaft having universal joints at both ends, respectively, between the bearing portion and the input portion on the working machine body side, and
A towing work machine connected to a tractor characterized in that a bending point of the joint is arranged at a substantially central portion between a bearing portion and a work machine body input portion.