JPH0228643Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to a tilling cover mounting structure for a side-drive type tilling rotary device in which the mounting posture of the tilling claw shaft with respect to the support frame can be freely changed.

[Prior art]

Conventional technology for changing the mounting position of the tilling cover in a side-drive rotary tillage device involves attaching a rail-shaped cover holder to the support frame that supports the tilling claw shaft, and sliding the tilling cover while being guided by the cover holder. A technique is known in which the support frame is fixed at an appropriate position with respect to the support frame (for example, Japanese Utility Model Application Publication No. 103812/1983).

[Problem that the invention attempts to solve]

The conventional structure described above requires a dedicated cover holder as an auxiliary tool to guide and slide the tillage cover, which increases the total number of parts and also requires the cover holder to be fixed to the support frame. In this case, a seal structure is also required to prevent rainwater and mud from entering the support frame, which has the drawback of complicating the overall structure and increasing the number of parts.

The present invention aims to avoid complicating the overall structure and increasing the number of parts by devising the structure of the tilling cover itself when changing the mounting posture of the tilling cover with respect to the support frame.

[Technical means to solve the problem]

The technical means of the present invention taken to achieve the above object is to support a tilling cover including an upper cover covering the upper part of the tilling claw and side covers at both ends to support both ends in the axial direction of the tilling claw shaft. In a side drive type tillage rotary device configured to be able to freely change its posture around the tiller claw axis with respect to a support frame,
The top cover and the side cover are fixed together with the upper edge of the side cover positioned above the top surface of the top cover, and the side cover protrudes above the top surface of the top cover. A slide groove along an arc around the axis of the tilling claw is formed in the upwardly protruding portion, and a fixture that engages in the slide groove is attached to the support frame to change the attachment posture of the tillage cover with respect to the support frame. This means that it can be fixed freely.

[Effect]

As a result of taking the above technical measures, the upwardly protruding portion of the side cover that protrudes above the upper surface of the upper cover works as a guide for the tilling cover in cooperation with the fixing device on the support frame side, that is, the tilling cover Due to a partial improvement in itself, the tilling cover itself doubles as a guide for sliding movement.

[Effect of idea]

Therefore, there is no need to mount a cover holder as a special guide structure on the support frame as in the past, and there is no need to provide a seal structure on the support frame side by installing the cover holder. By simply making structural improvements such as integral press processing when machining the side covers that make up the tiller cover, the tiller allows you to change the mounting position while avoiding complicating the overall structure and increasing the number of parts as much as possible. A cover mounting structure was obtained.

〔Example〕

Embodiments of the present invention will be described below based on the drawings.

Fig. 1 shows an overall side view of a side drive type tillage rotary device, in which a tillage rotary 1 is made up of a large number of tillage claws 1B attached around a tillage claw shaft 1A.
, chain case 2A as a support frame,
and the support frame 2B, the tilling claw shaft 1
A is mounted with both ends supported, and the direction of rotation relative to the tilling claw shaft 1A is switched between forward and reverse within the gear box 3 provided at the upper part of the chain case 2A.
It is configured to transmit power from the PTO shaft of the passenger aircraft to the tiller claw shaft 1A via a transmission chain (not shown) in the chain case 2A, and the chain case 2A and the support frame 2
A tilling cover 4 is attached to B, and as shown in FIG. It is configured to be able to be raised and lowered.

The tilling cover 4 includes a main cover 4A portion consisting of an upper cover 4a that covers the upper part of the tilling rotary 1 and side covers 4a' and 4a' located at both left and right ends of the upper cover 4a, and It is made up of a removable rear cover 4b and an auxiliary cover 4B consisting of scatter prevention plates 4b' and 4b' located on the left and right sides of the rear cover 4b, and an upper cover 4a that constitutes the main cover 4A. side cover 4
a', 4a' are integrally fixed with the upper edges of the side covers 4a', 4a' protruding upward from the upper surface of the upper cover 4a;
Slide grooves 8, 8 are formed in the upwardly protruding portion 4a'' of a', which are elongated holes extending approximately along an imaginary arc whose center of curvature is the axis of the tilling claw shaft 1A.

The tilling cover 4 is supported and fixed by brackets 9, 9 attached to the chain case 2A and fixtures 10, 10 attached to brackets (not shown) attached to the support frame 2B.

As shown in FIG. 2, the fixture 10 includes a bolt 11 with a handle, a piece 12 screwed onto the bolt, and a bolt 11 with a handle that is biased to abut the piece 12 against the upwardly protruding portion 4a''. Spring 1 for
It is composed of 3.

The upper protruding portion 4 of the side cover 4a'
At both front and rear ends and in the center of each slide groove 8, 8 of a″,
Chain case 2A and support frame 2B
When the tilling cover 4 is relatively rotated as shown in FIG. 5, the top 12 of the fixture 10 is dropped to determine the relative position of the tilling cover 4 with respect to the chain case 2A and support frame 2B. Engagement recesses 14 are formed for this purpose.
After the position is determined, by tightening the bolt 11 and compressing the spring 13, the recessed part 14 of the piece 12 is removed.
The tilling cover 4 is fixed by preventing it from escaping.

Next, the operation of the above embodiment will be explained.

As shown in Fig. 6A, when lifting the tillage rotary device to perform plowing work, the chain case 2A is tilted forward and there is a gap between the lower end of the rear cover 4b and the mud surface, so the handle Loosen the bolts 11 and rotate the tilling cover 4 rearward to bring the lower end of the rear cover 4b into contact with the mud surface. In such a case, the top 12 of the fixture 10 falls into the recess 14 on the front end side of the slide groove 8, and the position of the tilling cover 4 with respect to the chain case 2A is determined, and the tilling cover 4 is tightened by tightening the handle bolt 11.
to be fixed. As shown in FIG. 6B, when performing ridge breaking work on the ground surface, the tilling cover 4 is moved so that the top 12 of the fixture 10 is dropped into the recessed part 14 at the center of the slide groove 8. is rotated forward to determine and fix the position of the tilling cover 4 relative to the chain case 2A. As shown in FIG. 6C, when the tilling rotary device is lowered from the ground surface to perform tilling work, the chain case 2A is in a substantially upright state, and there is a large gap between the front end of the main cover 4a and the ground. As the tilled soil is scattered forward by the open and hot cuts,
The tilling cover 4 is further rotated forward, and the top 12 of the fixing tool 10 is dropped into the recessed part 14 on the rear end side of the slide groove 8, thereby determining and fixing the position of the tilling cover 4 relative to the chain case 2A.

In addition, as shown in FIG.
It is a rake attached to the rear end of the main cover 4a, which separates the tilled soil that flies along the inner surface of the main cover 4a into large particles and small particles, and distributes thin tilled soil above the layer of coarse tilled soil in the field. It is used to form a layer of

[Brief explanation of the drawing]

The drawings show an embodiment of the tilling cover mounting structure of the side drive type tilling rotary device according to the present invention, Fig. 1 is a partially cutaway side view of the side drive type tilling rotary device, and Fig. 2 shows the tilling cover and fixing device. FIG. 3 is a cross-sectional view of the same, FIG. 4 is a view taken along the - line in FIG. , FIGS. 6A, 6B, and 6C are side views showing working conditions. 1A...Tilling claw shaft, 1B...Tilling claw, 2A,2
B... Support frame, 4... Tillage cover, 4a...
...Top cover, 4a'...Side cover, 4a''...Upward protruding portion, 8...Slide groove, 10...Fixing tool.

Claims (1)

[Scope of utility model registration request] A tilling cover 4 including an upper cover 4a covering the upper part of the tilling claw 1B and side covers 4a' and 4a' at both ends is attached to support frames 2A and 2B that support both ends of the tilling claw shaft 1A in the axial direction. The tilling claw shaft 1
In the side drive type tillage rotary device configured to be able to freely change its posture around A, the upper cover 4a and the side cover 4a' are arranged such that the upper edge of the side cover 4a' is located above the upper surface of the upper cover 4a. A slide groove 8 along an arc around the tilling claw shaft 1A is formed in an upwardly protruding portion 4a'' of the side cover 4a' which is fixed integrally and protrudes upwardly from the upper surface of the upper cover 4a. Further, the side drive type is characterized in that a fixture 10 that engages in the slide groove 8 is attached to the support frame 2A, so that the attachment posture of the tillage cover 4 to the support frame 2A can be changed and fixed at will. Tillage cover mounting structure for tillage rotary device.