JPH08349U - Coupling device for towing work machine - Google Patents

Abstract

(57) [Abstract] [Purpose] The present invention relates to a structure of a connecting device capable of making a sharp turn of a towing work machine. [Structure] A connecting frame is provided at the rear of the tractor, the traction member projecting from the connecting frame. A mechanism in which a towed material is rotatably provided on a towed work machine by a vertical pin, and a traveling wheel is steered by a substrate that rotates about the turning angle of the tractor with the vertical pin as a fulcrum. This is a configuration in which a device for fixing and solving is provided.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a coupling device for a working machine that is pulled by a tractor or the like.

[0002]

[Prior art]

 In a towing vehicle for work, it is a common technique to equip a universal joint for power transmission. In recent years, a technique has been advanced in which the swirling property is particularly improved to finely respond to a field. For example, Japanese Utility Model Laid-Open No. 62-190407 is known. According to this known technique, the intermediate shaft of the universal joint described above is provided in the connecting member, and the front and rear connecting portions of the universal joint are equiangular when the towed body is bent to the left and right, so that the work can be turned while transmitting power. This is to reduce the sex further.

[0003]

[Problems to be solved by the device]

 According to the prior art known in the art, the turning performance is improved, but the running wheels on the side of the to-be-pulled work machine pop out inward with respect to the running traces of the towing vehicle. Therefore, there was a problem that the inner ring on the working machine side came into contact with the trees when turning sharply between fruit trees, and the inner ring on the working machine side slipped off when turning on a narrow farm road.

[0004]

[Means for Solving the Problems]

 In order to solve the problem, the present invention installs a connecting frame with a traction member on the rear part of the tractor, and installs the towed member on the front part of the work machine on the towed side. A connecting device for a towing work machine, characterized in that it is formed so as to be bendable by a vehicle, and a board that steers the traveling wheels of the working machine body is attached to the vertical pins so that the steering action can be fixed or released. It was provided.

[0005]

[Action]

 A connecting frame with traction material is attached to the rear part of the tractor, and a towed material is provided in the front part of the work machine on the towed side. It has become possible. Also, if the board that steers the running wheels is fixed to the traction material, it will run almost at the same time as the running path of the towing vehicle, which is convenient for running between fruit trees and turning narrow farm roads. If necessary, the steering action may be fixed or released selectively.

[0006]

【Example】

 The configuration will be described based on the drawings in which the present invention is implemented. FIG. 1 is a side view of the present invention, FIG. 2 is a plan view with a part omitted, and FIG. 3 is an explanatory sectional view of a main part.

Reference numeral 11 denotes a tractor rear portion having a drive shaft 17, and a hydraulic arm 14 having a lower link 3 suspended behind the drive shaft 17.

Reference numeral 2 denotes a connecting frame, in which a bearing body 4 is arranged at the center and an intermediate shaft 11 is provided in the front-rear direction, which is mounted on the lower link 3. Numeral 7 is a traction member which horizontally projects from the rear portion of the connecting frame 2 and rolls at a constant angle.

Reference numeral 15 denotes a working machine body, which is described as a mania spreader in this embodiment, and is provided with a pair of left and right traveling wheels 16. Reference numeral 10 denotes a towed material which is fixed to the frame of the working machine body and has an alligator hitch 18 at the tip thereof. The tip of the traction member 7 is inserted into the alligator hole 18 and is pivotally attached by a vertical pin 9. Reference numeral 8 denotes a substrate, which is formed by penetrating the vertical pin 9 on the hitch 18. A fixing pin 12 fixes the substrate 8 and the traction member 7 to each other. A rod 13 transmits the swing angle of the substrate 8 to the running wheels. Reference numeral 5 is a first connecting shaft, both ends of which are freely formed, and is connected to the front of the tractor PTO shaft and the intermediate shaft 11. 6 is a second connecting shaft, both ends of which are freely formed, and connects the rear of the intermediate shaft 11 and the input shaft of the working machine body 15.

In FIG. 2, a pair of first rods 13 are arranged on the left and right sides of the substrate 8, and when the tractor turns (a), the vertical pin 9 turns about a fulcrum. At this time, the first rod 13 acts in the direction of (b). Reference numeral 21 denotes a swing bracket which can swing about the pivot 20 as a fulcrum, and rotates in the direction of C in conjunction with the first rod 13. The hub bracket 24 is rotated in the direction of d by the action of this c.

A horizontal axis 25 is provided with traveling wheels 16 on the left and right sides via a hub bracket 24. The hub bracket 24 is provided on a horizontal shaft 25 by a support shaft 23 so as to be horizontally rotatable. A second rod 22 is connected to the rear portion of the swing bracket 21 and the front portion of the hub bracket 24.

FIG. 3 is a cross-sectional view for explaining fixing and releasing of the board 8 which controls steering of the traveling wheels 16 of the towing work machine. The substrate 8 is installed on the upper part of the substrate 8 so as to share a vertical pin 9 for horizontally pivotally connecting the towed member 7 and the towed member 10. In this figure, with the fixing pin 12 fixing the base plate 8 and the tractor-side traction member 7, the turning angle of the tractor causes the base plate 8 to swing integrally and the first rod 13 to interlock.

Reference numeral 19 denotes an engaging hole, and when the fixing pin 12 is pulled out and fixed by penetrating between the engaging hole 19 and the towed material, the steering action of the first rod 13 is released, and the towed material 7 becomes independent. Rotate.

[0014]

【effect】

 With the above configuration, work with a towing work machine can be switched between small turning spraying work in paddy fields and steering turning of wheels with almost the same locus on the tractor between fruit trees with a small inner ring difference. Improved workability.

[Brief description of drawings]

FIG. 1 is a side view of the present invention.

FIG. 2 is a plan view with a part omitted.

FIG. 3 is an explanatory cross-sectional view of a main part

[Explanation of symbols]

 1 tractor rear part 2 connection frame 3 lower link 4 bearing body 5 first connection shaft 6 second connection shaft 7 traction material 8 substrate 9 vertical pin 10 traction material 11 intermediate shaft 12 fixing pin 13 first rod 14 hydraulic arm 15 working machine body 16 Running Wheel 17 Drive Wheel 18 Hitch 19 Engagement Hole 20 Axis 21 Swing Bracket 22 Second Rod 23 Support Shaft 24 Hub Bracket 25 Horizontal Shaft

─────────────────────────────────────────────────── ─── Continuation of the front page (51) Int.Cl. ⁶ Identification code Internal reference number FI technical display location B60D 1/01

Claims (1)

[Scope of utility model registration request] 1. A connecting frame provided with a traction member is attached to a rear portion of a tractor, and the traction member is provided in a front portion of a work machine body on a towed side so that the traction member and the traction member can be bent by a vertical pin. In addition, the board for steering the traveling wheels of the working machine body is attached to the vertical pin, and the locking and releasing of the steering action can be freely selected.