JPH1042606A - Tilling cover for rotary working machine - Google Patents

Abstract

PROBLEM TO BE SOLVED: To attain sure sealing in the rotary connection part between the stationary cover and the vertically swingable rear cover in a rotary working machine with a simple constitution. SOLUTION: The rear cover 11 to be rotatably mounted to the rear of the upper side stationary cover 10 covering the tillage tines in the rotary tiller is inserted through a cylindrical shaft 13 fixed to the transverse shaft 12 set to the upper side stationary cover 10 on the rear cover side in a hinge form. Rubber elastic protrusions 15 are mounted to the upper side stationary cover 10 so that they may protrude backwards and extend sideways. These elastic protrusions 15 press the circumference of the cylindrical shaft 13 on both upper and lower sides to fit them.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a tilling cover for a rotary working machine attached to an agricultural tractor.

[0002]

2. Description of the Related Art Conventionally, a low tractor mounted on an agricultural tractor has been used.
For the tillage cover of the tallying machine, see
As can be seen in Japanese Patent Application Publication No. -15109, a rubber pipe made of an elastic material is fitted into a rotating portion of a fixed cover for covering a rotating upper portion of a tilling claw and a rear cover rotatably mounted. The gap between the rotating cylinder shaft of the rear cover and the fixed cover has been sealed.

[0003]

In the prior art, the rubber pipe is constantly rubbed around the outer periphery of the rotary cylinder shaft on the rear cover side, causing a problem in the durability of the rubber pipe, and the installation stability of the rubber pipe is poor. There was a drawback that a good sealing function could not be exhibited.

[0004]

The present invention employs the following technical means in order to solve the above-mentioned problems. That is, an upper fixed cover that covers the tilling claw 8 of the rotary tiller.
Rear cover 11 rotatably mounted on the rear of the vehicle 10
Is mounted in a hinge shape by inserting a cylindrical shaft 13 fixed to the rear cover side into a horizontal shaft 12 fixed to the upper fixed cover 10, and attached to the upper fixed cover 10 in a rearward direction. Rubber-like elastic protrusions 15 formed on the side and extending in the lateral direction
A tillage cover of a rotary working machine in which the outer peripheral portion of the cylindrical shaft 13 is press-fitted on the upper and lower sides by the elastic projections 15.

[0005]

DESCRIPTION OF THE PREFERRED EMBODIMENTS One example of the present invention will be described in detail with reference to the drawings. Reference numeral 1 denotes a rotary working machine, and a main transmission case 2 from a PTO shaft on the tractor body side via a universal joint shaft.
Power is transmitted to the input shaft 3 protruding forward in the center of the left and right sides, and the cylindrical frames 4a and 4b protrude left and right from the main transmission case 2 in the center right and left, and the side is provided at one end thereof. A transmission case 5 is attached to the other end with a side plate 6 facing downward, and a rotary shaft 7 is horizontally mounted between the side transmission case 5 and the side plate 6. Rotary shaft 7
Tilling blade 8 is attached to And this rotary shaft 7
The front, ceiling, rear and left and right sides of the outer circumference of the rotation of the tilling blade 8 attached to the ceiling are covered with a rotary cover 9, and the upper fixed cover fixed to the machine frame on the ceiling side.
A rear cover 11 is rotatably mounted on the rear end side of the motor 10.

In the mounting structure of the fixed cover 10 and the rear cover 11, a shaft 12 extending in the lateral direction is provided directly or indirectly on the fixed cover 10 side, and the shaft 12 is provided on the rear cover 11 side. A cylindrical shaft 13 that can be inserted and removed is attached to 12. The shaft 12 may be detachably attached to the side cover 14 attached to the left and right sides of the fixed cover 10 so that the shaft 12 can be pulled out to the left and right. In this case, the shaft 12 is indirectly attached to the fixed cover 10. Will be attached.

In FIG. 3, reference numeral 15 denotes an elastic projection. In the example shown in FIG. 3, projections 15a having a narrowed portion which is pressed into a fixing hole 16 formed on the fixing cover 10 side at a predetermined interval in a horizontal direction. The integrally formed protrusion 15b having a wedge-shaped cross section is made of a rubber material. The two elastic projections 15 are mounted on the rear side of the fixed cover 10 with a vertical interval therebetween, and the cylindrical shaft 13 of the rear cover 11 is inserted into the upper and lower projection intervals.
Of the fixed cover 10 and the front end side of the rear cover 11 are sealed by the projections 15, and the lower cover 11 is turned downward. It is a limit stopper for movement.

In the above embodiment, the elastic projections 15 are specially constructed. In the embodiment of FIGS. 5 and 6, the upper and lower projections 25b, 25b are integrally connected by a thin rubber band 25c. Configuration. In another embodiment shown in FIG. 7, rubber projections 35b, 35b are baked on the fixed cover 10 side to be integrally formed. With the configuration of the above example, the fixed cover 1 can be surely prevented without the elastic projection strip 15 having the sealing function being accidentally dropped or the set position being shifted.
A gap formed between the rear surface and the rotating portion of the rear cover 11 can be sealed, thereby preventing a situation in which muddy water enters the gap and causes rust. Further, the rotation of the rear cover 11 is smooth, and in the case of a configuration provided with an automatic control function of detecting the rotation of the rear cover and controlling the rotary work machine 1 to move up and down. The rotation detection of the rear cover 11 is accurately performed, and the elevation control is ensured.

In the rear cover 11, the front end side of the plow attached to the machine frame side is cut into the left and right side portions or the left and right center portions at the rear end surface portions, and a groove is formed simultaneously with the tilling operation. Work to create ridges on both sides of the trench. When you do not need this ridge work,
Cover pieces 17a, 1 that cover these notches (a) and (b)
7b will be attached. These cover pieces 1
When the cover 7 is mounted, it is required that a joint portion between the mounting peripheral portion of the cover piece and the cover piece be substantially flat, and in particular, the lower end of the rear cover 11 does not shift back and forth. It is desirable to be located in the same plane. For this reason,
The lower end portion of the rear cover 11 is folded back to form a pin engaging cylinder hole 18 in the folded portion. After the pin 19 is inserted into the hole 18, the cover piece 17 is pressed against the outer peripheral surface of the notch (a) and (b) on the rear side of the rear cover 11 to set the state shown in FIG. It is configured to be fixed by the rotating piece 20. In the case of the center cover piece 17b, the pins 19 are provided on one of the left and right sides, but the plate-like projections 21 are provided on the other side, and the rear cover 11 is provided.
The pin engagement cylindrical holes 18 on the left and right sides of the cutout portion (a) are cut out (c) in rear view, and the plate-like projection 21 can be fitted into the cutout portion (c).

If the side cover pieces 17a and 17b of the above example are removed during the ridge work, the soil penetrates into the pin engagement cylinder hole 18, and when the cover piece 17 is mounted next, the internal soil is removed. Excavation work becomes difficult. Therefore,
The hole 18 is covered with a resin cap 22. Further, when the pins 19 of the side cover pieces 17a and 17b are inserted into the cylindrical hole 18 of the rear cover 11 by being pushed into the cylindrical hole 18, the spring 23 always urges the cylindrical hole 18 to the outer end of the cylindrical hole. If the stopper 24 is provided, it is convenient that the cylindrical hole 18 is not clogged with mud, and if the nipple 26 for injection is provided so that the inside can be filled with grease, the movement of the stopper 24 can be rusted. You can do without.

The blade width of the tilling claw 8 attached to the rotary shaft 7 of the rotary working machine 1 and the number of holders 25 for mounting the tilling claw in the direction of the rotary axis are as follows. If so, the tilling horsepower is reduced, high-speed tilling becomes possible, and furthermore, residual tilling can be eliminated. That is, the rotary shaft 7
Odd-numbered pitches (11 in the figure)
), And four holders 25 are provided around the shaft at the left and right center positions, and the tilling claws 8 are mounted on each of the holders 25 so that the left and right claws face alternately. And two holders 25 are provided around the shaft on the left and right sides with respect to the left and right center positions, and the tilling claws 8 are attached to each. When attaching the tillage claws 8 to the two holders 25 provided at the same left and right positions on the left and right sides, when the tillage claws 8 are attached as shown in FIG. 13, plane tillage (d) becomes possible as shown in FIG. When installed as shown in Fig. 15,
As shown in Fig. 16, the outer tilling (e) becomes possible. In addition, when it is attached as shown in FIG. 17, the inner tilling (f) becomes possible as shown in FIG.

[0012]

According to the present invention, a gap formed between the rear surface of the fixed cover and the rotating portion of the rear cover can be reliably sealed, and muddy water can enter the gap. Can prevent rusting

[Brief description of the drawings]

FIG. 1 is a partially broken side view.

FIG. 2 is a side view of a main part.

FIG. 3 is a side sectional view of a main part.

FIG. 4 is a perspective view of a main part.

FIG. 5 is a perspective view of a main part of another example.

FIG. 6 is a sectional view of a use state of FIG. 5;

FIG. 7 is a sectional view of a main part of another example.

FIG. 8 is a perspective view of a main part.

FIG. 9 is a perspective view of a main part of another example.

FIG. 10 is a perspective view of a main part of another example.

FIG. 11 is a perspective view when the cover is assembled.

FIG. 12 is a perspective view of a main part of another example when the cover is assembled.

FIG. 13 is a rear view of a tilling claw mounting portion.

FIG. 14 is a cross-sectional view showing a plowed state of a field in FIG. 13;

FIG. 15 is a rear view of another example of the tilling claw mounting portion.

FIG. 16 is a cross-sectional view showing a plowed state of a field in FIG.

FIG. 17 is a rear view of another example of a tilling claw attachment portion.

FIG. 18 is a cross-sectional view showing a plowed state of a field in FIG. 17;

[Explanation of symbols]

 8 Tilling Claw 10 Fixed Cover 11 Rear Cover 12 Shaft 13 Cylindrical Shaft 15 Elastic Protrusion

 ──────────────────────────────────────────────────続 き Continuing from the front page (72) Inventor Tsune Takahashi 1-Yachikura, Tobe-cho, Iyo-gun, Ehime Prefecture Iseki Agricultural Machinery Co., Ltd.

Claims (1)

[Claims] A rear cover 11, which is rotatably provided at the rear of an upper fixed cover 10 for covering a tilling claw 8 of a rotary tiller, is fixed to the upper fixed cover 10. The cylindrical shaft 13 fixed to the rear cover side is inserted into the horizontal shaft 12 thus mounted, and is mounted in a hinged manner.
A rubber-like elastic projection 15 which is formed to project rearward and extends in the horizontal direction is attached to the outer periphery of the cylindrical shaft 13 by press-fitting the outer peripheral portion of the cylindrical shaft 13 on the upper and lower sides. Tilling cover of work machine