JPH03160902A - Mud adhesion prevention device for rotary equipment - Google Patents

Abstract

PURPOSE:To prevent the formation of a soil bank generated on the lower surface side of an elastic cover by disposing a soil adhesion-preventing elastic cover on the lower surface of a cover covering a rotary tilling member through an attaching rib formed along the tine-rotating direction of the rotary tilling member. CONSTITUTION:When soil spattered with a rotary tilling member 6 flows along an elastic cover 13 disposed on the lower surface sides of an upper cover 10 and a rear cover 11, the elastic cover 13 is vibrated with the impact of the spattered soil to prevent the adhesion of the soil. Since an elastic rib 28 is disposed along the flow direction of the soil in the rotation direction of tines, the back of soil can not be formed on the elastic cover 13. Since the elastic cover 13 is disposed over the upper cover 10 and the rear cover 11, the soil does not adhere to a connection section between both the covers.

Description

[Detailed description of the invention] (Industrial application field) The present invention relates to a mud adhesion prevention device for a rotary device.

(Prior art) As a mud adhesion prevention device for a rotary device, a certain amount of mud adhesion prevention device made of rubber, etc. is installed on the lower surface side of the upper cover that covers the rotary tilling section from above, with a predetermined gap between the upper cover and the upper cover. Some plants are equipped with an elastic cover for use in tilling, so that the mud thrown away by the tiller claws during tilling is received by the elastic cover, and the vibration of the elastic cover prevents the mud from adhering to the soil.

When attaching this elastic cover, a horizontal mounting rib is formed on the upper surface of the elastic cover, a horizontal bar is inserted through the rib, and both ends of the bar are fixed to the upper cover with bolts or the like.

(Problem to be Solved by the Invention) In the conventional structure, the mounting ribs are located in a direction perpendicular to the direction of rotation of the claw, so even if the lower surface side of the elastic cover is smooth, mud pools may occur at each mounting rib portion. is likely to occur,
There was a drawback that mud would stick to that part. In addition, conventionally, both ends of the horizontal bar were fixed to the upper cover with bolts, so bolt holes had to be formed in the upper cover, and there was also the problem that mud could adhere to the elastic cover at the parts corresponding to the bolts. Ta.

The present invention has been provided in view of such conventional problems, and eliminates mud pools that occur on the bottom side of the elastic cover, and also enables the elastic cover to be attached without using bolts or the like. The purpose of this is to prevent mud from adhering to the joint between the upper cover and the rear cover.

(Means for Solving the Problems) As a first means, the present invention provides a cover 10 for covering the rotary tiller 6. 11, the cover 10.
In the mud adhesion prevention device for a rotary device, in which an elastic cover l3 for preventing mud adhesion is attached with a predetermined gap between the elastic cover l3 and The elastic ribs 28 and 29 are formed, and the elastic cover 1 is attached via the mounting elastic ribs 28 and 29.
Cover 310. It was installed on 11.

In addition to the first means, the present invention provides a cover 10 as a second means. Elastic ribs 28, 29 on the bottom side of 11
Engagement plates 35 and 46 are provided correspondingly, and elastic ribs 2829
, an engaging portion 34 that laterally engages with the engaging plate 35.46.
．． 45 was formed.

Furthermore, the present invention provides, as a third means, an upper cover 10 that covers the rotary tiller 6 from above, in addition to the first means.
An elastic cover 13 is provided over the rear end of the upper cover 10 and a rear cover 11 which is vertically movably attached to the frame.
This elastic cover l3 is fixed to these covers 10.11 at the front end of the upper cover 10 and the upper end of the rear cover 11, and the elastic cover 13 is fixed between the front end of the upper cover 10 and the front end of the rear cover 1l. The mounting portion 48 relative to the upper cover IO is provided with play in the front-rear direction.

(Function) The mud thrown off by the rotary tiller 6 flows along the elastic cover 13 on the lower surface side of the upper cover 10 and the rear cover 11. At this time, the elastic cover 13 vibrates due to the impact of the mud, thereby preventing mud from adhering to it.

Since the elastic ribs 28 and 29 are along the direction of mud flow in the direction of rotation of the claw, no mud pools are formed in the elastic cover 13.

Moreover, the elastic cover 13 includes the upper cover 10 and the rear cover 11.
Because it spans the area, there is no mud adhesion at the connection between the two. Moreover, since there is play in the mounting portion 48, the movement of the rear cover 11 around the pivot shaft 24 is not impaired by the elastic cover 13.

(Example) Hereinafter, an example of the present invention will be described in detail based on the drawings. In Fig. 2, 1 is a rotary machine frame, an input gear case 2, a support arm 3, a side frame 4, a chain case 5, etc. It is structured by 6 is a rotary tilling section, and a claw shaft 7 is installed horizontally at the bottom of the rotary machine frame.
, is composed of a large number of tilling claws 8 provided on this claw shaft 7. Reference numeral 9 denotes a rotary cover that covers the rotary tilling section 6, and is composed of an upper cover 10, a rear cover 11, and a pair of left and right side covers 12. 13 is an elastic cover for preventing mud from adhering to the upper cover 10 and rear cover 11;
It is attached to the bottom side of the. 14 is a gauge wheel support rod that projects rearward from the rotary machine frame 1.

Reference numeral 15 denotes a pair of left and right bullet lowering mechanisms that urge the rear cover 11 downward, which are inserted vertically into the mounting arm [6] fixed to the upper cover 10 and the rear end of this support arm 16, and whose lower end is attached to the rear cover. It is constituted by a lowering rod 19 pivotally attached to a bracket 17 of 11 with a pin 18, and a lowering coil spring 20 fitted around this lowering rod 19.

The upper cover 10 includes an upper cover plate 2 as shown in FIG.
1 and a lower cover plate 22 are joined at both the front and rear ends, and side plates 23 in the front and rear direction are provided at both left and right edges, and it has a hollow shape.
The lower cover plate 22 is curved into an arc so as to cover the rotary tiller 6 from above. In addition, upper cover 1
0 is fixed to the rotary machine frame 1 side.

The rear cover 11 is connected to the upper cover 1 as shown in FIG.
It is pivoted to the rear end of the 0 for vertical movement on a horizontal pivot 24, and a V-shaped notch 25 is formed at the center of the rear, as shown by imaginary lines in FIG.

This notch 25 is for arranging a cultivator or the like attached to the gauge wheel support rod 14, and is normally covered by a triangular auxiliary cover 26. Also rear cover 11
A leveling cover 27 is detachably attached to the rear end.

The elastic cover l3 is attached to the upper cover 1 as shown in FIG.
0 and rear cover 11, and the lower surface side is formed into a smooth surface.

Further, on the upper surface side of the elastic cover 13, a front elastic rib 28 and a rear elastic rib 29 for mounting are formed along the direction of rotation of the claws of the rotary tiller 6, and a front elastic rib 3
0, a front side elastic rib 31 and a rear center elastic rib 32 are formed, respectively. The front elastic ribs 28 extend from near the front end of the upper cover 10 to the upper end of the rear cover II, and are formed in a plurality, for example six, at predetermined intervals in the lateral direction. As shown in FIGS. 1 and 4, each front elastic rib 28 has trapezoidal protrusions 33 that protrude upward at predetermined intervals in the front-rear direction, and each of the protrusions 33 An opening-shaped retaining portion 34 is provided on the same side of the lateral force and is formed corresponding to the lateral force. On the other hand, the upper cover 10
At the upper end of the rear cover 11, as shown in FIGS. 1, 5, and 6, an engaging portion 34 of each front elastic rib 28 is provided.
Tongue-shaped engagement plates 35 are fixed at positions corresponding to the engagement plates 35, and each engagement plate 35 is inserted into and engaged with each engagement portion 34 from the lateral direction. The front end elastic rib 30 is formed on the front end edge of the elastic cover 13 over the entire length in the lateral direction, and the front end elastic rib 30 has an upper and a lower end as shown in FIGS. 1 and 4.
Lower cover plate 21. A retaining portion 36 is formed into which the front end edge of 22 is inserted from the rear side. The front end elastic rib 30 is supported and fixed between the upper and lower cover plates 21 and 22 by a holding plate 38 via a rubber sag 37 for preventing muddy water from scattering during puddling. The presser plate 38 is the upper cover plate 2
1 with bolts 39, and this presser plate 3
8, a V-shaped protrusion 40 is formed over the entire length in the lateral direction so as to prevent the front end elastic rib 30 from coming off.

The front elastic ribs 31 are formed in the front-rear direction on both left and right edges of the elastic cover 13 in correspondence with the left and right edges of the upper cover 10 . As shown in FIG. 5, on one front elastic rib 31, a band-shaped engagement plate 41 fixed to the lower cover plate 22 in the front-rear direction is inserted into the engagement portion 42 from one side in the lateral direction. and is engaged.

Also, the other front side. As shown in FIG. 6, the elastic rib 31 is positioned in contact with the side plate 23.

As shown in FIG. 3, the rear central elastic rib 32 is formed into a mountain shape when viewed from the rear along the front edge side of the notch 25 of the rear cover 11, and the engaging portion 43 of the rear central elastic rib 32 has a As shown in FIG. 7, a fixed retaining plate 44 is inserted and engaged with the lower surface of the rear cover 11.

A plurality of rear elastic ribs 29, for example three, are provided on both left and right sides of the rear central elastic rib 32, at both left and right end edges of the elastic cover 13, and in the middle therebetween. A retaining portion 45 opening on one side in the lateral direction is formed over the entire length. As shown in FIG. 8, the engaging portion 45 of each rear elastic rib 29 has a
An engagement plate 46 having substantially the same length as this is inserted and engaged from one side in the lateral direction. Each retaining plate 46 is fixed to the lower surface of the rear cover 11 in the vicinity of each rear elastic rib 29 in the front-rear direction.

In this way, the elastic cover 13 is attached to the upper cover 1 via the elastic ribs 28 to 32, the engagement plates 35, 41, 44, 46, etc.
0 and rear cover 11 with a predetermined gap therebetween. The engagement plate 35 at the upper end of the rear cover 11 and the engagement portion 34 of the front elastic rib 28 have substantially the same longitudinal width, and the mounting portion 47 is fixed to the rear cover 1l. On the other hand, the other retaining portion 34 of the front elastic rib 28
are formed to be larger in width than the longitudinal width of the engagement plate 35 toward the front, and a play L is provided in these mounting portions 48 to allow vertical movement of the rear cover 11 around the pivot shaft 24. Note that a dogleg-shaped receiving plate 49 is provided on the lower surface side of the upper end of the rear cover 11 so as to eliminate the level difference from the rear end of the lower cover plate 22, and each engagement plate is attached to this receiving plate 49. 3
5 is installed.

In the above structure, when the tilling claws 8 of the rotary tilling unit 6 rotate and start cultivating the field, the mud thrown by the tilling claws 8 is scattered to the upper cover 10 and rear cover 11 side, and the dirt is attached to the lower surface side thereof. While colliding with the elastic cover 13 that has been moved, it is guided rearward along the elastic cover 13.

At this time, since the elastic cover 13 constantly vibrates under the impact of the mud collision, mud does not adhere to the lower surface side of the elastic cover l3.

In addition, the elastic cover 13 is connected to the upper cover 10 and the rear cover 1.
The elastic ribs 28 and 29 for attachment to the tiller l are formed along the rotating direction of the tilling claw 8, that is, the direction in which the mud flows, so the elastic ribs 28 and 29 are
No mud pools are formed in the area, and therefore, mud can be prevented from adhering to the mud pools, and the mud can flow smoothly, so damage to the elastic cover 13 can also be prevented.

Since the elastic cover 13 is attached from the top cover 10 to the rear cover 11, the elastic cover 13 is not interrupted even at the connecting part between the two covers 10 and 11, and the flow of mud along the elastic cover 13 is prevented from changing. Become good.

Therefore, it is possible to prevent mud from adhering to and clogging the connecting portion, especially near the pivot shaft 24. During tilling, the rear cover 11 moves up and down around the pivot 24 according to the amount of tilled soil, and the lowering mechanism 15
Although the elastic cover 13 is rotated upward around the pivot 24 when adjusting the
8 has play L in the front and back direction, so at this time, the mounting part 4
The elastic cover 13 expands and contracts uniformly from 8 to the front side, and does not prevent the movement of the rear cover 11.

On the upper cover 10 side, both the left and right ends of the elastic cover 13 are in contact with the side plates 23, so mud can be washed away from the elastic cover 1 during tillage.
It rarely invades the upper side of 3. Furthermore, even if mud were to enter, there are openings 23a on both sides of the front end that are detached from the side plates 23, and there is a gap between the elastic ribs 28 on the rear side, so the mud can be drained out from these. Go. Therefore, mud will not accumulate on the slippery cover 13.

The elastic cover 13 has the engaging portions 3 of its elastic ribs 28 and 29.
4, 45 to the engagement plate 35 of the upper cover 10 and rear cover l1. 46 from the lateral direction, there is no need to use bolts as in the conventional case, and the mounting portion can be accommodated between the upper cover 10, the rear cover 11, and the elastic cover 13.

Note that the elastic ribs 28, 29. 31 and engagement plate 35,
4], 46, etc. are the cover 10.4 shown in FIG. 1
They may be provided so as to be left-right symmetrical with respect to the center line C of 1.

(Effects of the Invention) According to the present invention, the mounting ribs 28 and 29 are provided on the upper surface of the elastic cover 13 along the direction of rotation of the claws of the rotary tiller 6.
are formed, and the elastic cover 13 is attached to the cover 10. through the mounting elastic ribs 28, 29. Since it is installed on 11,
No mud pools are formed on the lower surface side of the elastic cover 13, the adhesion of mud can be reliably prevented, and the durability of the elastic cover 13 itself is improved.

Further, in the present invention, the cover 10. Engagement plates 35.46 are provided on the lower surface side of 11 in correspondence with the elastic ribs 28, 29, and retaining portions 34.45 are formed on the elastic ribs 28, 29 to engage the engagement plates 35.46 from the lateral direction. Therefore, there is no need to use bolts or the like to attach the elastic cover 13 as in the conventional case, and the cover 10. 11 and elastic cover 13
The entire structure of the attached part can be accommodated between the two.

Furthermore, in the present invention, an elastic cover 13 is provided over an upper cover 10 that covers the rotary tiller 6 from above, and a rear cover 1l that is pivotally attached to the rear end of the upper cover 10 so as to be vertically movable. These covers 10.
11, and the mounting portion 48 of the elastic cover 13 to the upper cover 10 between the front end of the upper cover 10 and the front end of the rear cover 11 is provided with back and forth play, so that the upper cover 10 and the rear Mud does not adhere to the connecting portion with the cover 1l, and the movement of the rear cover 11 is not obstructed even though the elastic cover 13 is continuous.

[Brief explanation of the drawing]

The drawings show one embodiment of the present invention, in which FIG. 1 is a side sectional view of a part of the upper cover, FIG. 2 is a side view of the rotary device, FIG. 3 is a plan view of the elastic cover, and FIG. 5 and 6 are rear sectional views of a part of the upper cover, FIG. 7 is an enlarged view of FIG.
This is an enlarged view of the figure in the direction of the arrows. 1... Rotary machine frame, 6... Rotary tilling section, 9...
...Rotary cover, 10...Top cover, l1...
・Rear cover, 13...Elastic cover for preventing mud adhesion, 28
... Front elastic rib, 29 ... Rear elastic rib, 34
．． 35... Engagement portion, 35, 46... Engagement plate. 15

Claims (3)

[Claims] (1) Cover (10) that covers the rotary tiller (6) (
In a mud adhesion prevention device for a rotary device, an elastic cover (13) for preventing mud adhesion is attached to the lower surface side of the rotary device with a predetermined gap between the elastic cover (13) and the covers (10) and (11). ) are formed with mounting elastic ribs (28) (29) along the direction of rotation of the claws of the rotary tiller (6), and the elastic cover (13) is formed through the mounting elastic ribs (28) (29). ) attached to covers (10) and (11). (2) Elastic ribs (
Engagement plates (35) (46) are provided corresponding to 28) and (29), and engagement plates (35) and (46) are provided on the elastic ribs (28) and (29).
6) The mud adhesion prevention device for a rotary device according to claim 1, wherein engaging portions (34) and (45) that engage from the lateral direction are formed in the rotary device. (3) An elastic cover (13) extends between an upper cover (10) that covers the rotary tiller (6) from above and a rear cover (11) that is pivotally attached to the rear end of this upper cover (10) so as to be able to move up and down. The elastic cover (13) is fixed to the covers (10) and (11) at the front end of the upper cover (10) and the upper end of the rear cover (11), and the front end of the upper cover (10) and The upper cover (10) of the elastic cover (13) between the front end of the rear cover (11)
2. The mud adhesion prevention device for a rotary device according to claim 1, wherein the mounting portion (48) for the rotary device has play in the longitudinal direction.