JP2575499B2 - Mud intrusion prevention device for rotary device - Google Patents

Description

Description: TECHNICAL FIELD The present invention relates to a mud intrusion prevention device for a rotary device.

(Prior art) Conventionally, in a rotary device, an elastic cover for preventing adhesion of mud made of rubber or the like is provided on the inner surface side of an upper cover that covers a rotary tillage portion from above, with a gap between the upper cover and the upper cover. There is a configuration in which the mud traversed by the tilling claws is received by the elastic cover during tilling, and the adhesion of the mud is prevented by the vibration of the elastic cover.

(Problems to be Solved by the Invention) In this type of rotary device, if mud enters between the upper cover and the elastic cover, the gap between the upper cover and the elastic cover becomes smaller, so that the vibration of the elastic cover during tilling becomes worse. Of course, a large amount of mud adheres mainly to the invading portion, and mud also adheres to the inner surface side of the elastic cover itself. Therefore, it is necessary to prevent mud from entering the gap as much as possible, but conventionally, since the elastic cover is simply provided on the inner surface of the upper cover in a stretched state, the mud enters the gap from both left and right sides. There were drawbacks. In addition, the elastic cover is attached to the upper cover in a stretched state, but since the end in the stretching direction is only fixed to the upper cover with bolts, the intrusion of mud into the gap from that part cannot be ignored. was there.

The present invention has been made in view of such a conventional problem, and has been provided for the purpose of preventing intrusion of mud into a gap.

(Means for Solving the Problems) In the present invention, first, as means for preventing intrusion of mud into the left and right end gaps, the upper cover 9 is provided on the inner surface side of the upper cover 9 covering the rotary tilling portion 5 from above. The elastic cover 18 for preventing the adhesion of mud is provided with a predetermined gap 19 between the elastic cover 18 and the upper and lower covers 9. , A seal portion 34 formed by bending inward against the elasticity
The seal portion 34 is formed thick and elastically abuts the side plates 13 at both left and right ends of the upper cover 9 from the inner surface side.

Next, the present invention provides a rotary tilling section 5 as a means for preventing intrusion of mud into the gap from one end of the elastic cover in the tension direction.
In a rotary device provided with an elastic cover 18 for preventing mud from adhering on the inner surface side of the upper cover 9 covering the upper cover 9 with a predetermined gap 19 between the upper cover 9 and the elastic cover 18,
The core material 21 having the hook 29 is embedded at one end in the tension direction of the upper cover 9, and the hook 29 of the core material 21 is engaged with the upper cover 9 such that one end of the elastic cover 18 is in close contact with the inner surface of the upper cover 9. Department
It was hooked on 31.

(Operation) Since the seal portions 34 at the left and right ends of the elastic cover 18 are in contact with the side plate 13 from the inside, the gaps 19 between the upper cover 9 and the elastic cover 18 extend from both ends of the elastic cover 18 during tilling. No mud enters.

Also, one end of the elastic cover 18 in the tension direction is hooked by the hook 29 of the core 21 to the engaging portion 31 of the upper cover 9,
Since it is in close contact with the upper cover 9, there is no gap
Mud does not invade 19.

(Embodiment) Hereinafter, the present invention will be described in detail with reference to the illustrated embodiment. In FIG. 7, reference numeral 1 denotes a rotary machine frame, and a gate shape is formed by an input gear case 2, a support arm 3, a side frame, a chain case 4, and the like. Is configured. Reference numeral 5 denotes a rotary tilling unit, which is a claw shaft 6 erected under the rotary machine frame 1;
It is composed of a large number of tilling claws 7 provided on this. Reference numeral 8 denotes a rotary cover that covers the rotary tilling unit 5.
Upper cover 9, rear cover 10, a pair of left and right front side covers
11 and a rear side cover 12. As shown in FIGS. 1 and 2, the upper cover 9 has reinforcing side plates 13 formed in an L-shaped cross section over the entire length of the left and right end edges. Are fixed with bolts or the like. The rear cover 10 is pivotally attached to the rear end of the upper cover 9 by a pivot 14 so as to be movable up and down.
And is urged downward by a bouncing mechanism 15 provided between them. The rear cover 10 has an average cover 16 at the rear end. The side covers 11 and 12 are directly or indirectly attached to the rotary machine casing 1.

As shown in FIG. 1 to FIG. 3, on the inner surface side of the upper cover 9, that is, on the rotary tilling unit 5 side, an elastic cover 18 having a size covering the entire surface for preventing mud adhesion is provided between the upper cover 9 and the upper cover 9. Are mounted with a predetermined gap 19 therebetween.
The elastic cover 18 is made of an elastic material such as rubber in the form of a thin plate. A core member 20 having a U-shaped cross section is provided at the front edge and a band is provided at the rear edge as shown in FIGS. A plate-shaped core material 21 is embedded over the entire width in the left-right direction, and a raised portion 22 having a trapezoidal cross section is formed at two locations in the front-rear direction over substantially the entire width in the left-right direction. Up section 22
A core member 23 having a U-shaped cross section is embedded therein in the left-right direction.

A lever 25 is fixed to both left and right ends of the front end core member 20 by bolts 24. The lever 25 is pivotally supported by a bracket 26 on the upper cover 9 side by a pivot 27 and is It is configured so that it can be fixed to the bracket 26 by the pin 28 in a state where a tension in the direction is given. A plurality of hooks 29 formed by cutting and raising a part thereof are formed at predetermined intervals in the left-right direction on the core member 21 on the rear end side, while the rear end of the upper cover 9 corresponds to each hook 29. An engaging portion 31 is formed in an opening shape in the bent portion 30 of the portion. And hook
Numeral 29 is hooked on the engaging portion 31 of the bent portion 30 so that the rear end portion of the elastic cover 18 comes into close contact with the bent portion 30 of the upper cover 9 from the rear side.

As shown in FIGS. 2 and 3, engaging pins 32 are fixed to both ends of each core member 23 in the middle part so as to protrude right and left outward. Under the side plate 13
It is engaged with a guide member 33 mounted on the inside, which has a U-shaped cross section, so as to be movable up and down and back and forth. The guide member 33 is formed to be curved in an arc shape along the inner surface side of the upper cover 9.

The left and right widths of the elastic cover 18 are slightly wider than the left and right widths of the upper cover 9 as shown in FIG. 1 to FIG.
34 are formed. The seal 34 is bent downward against its elasticity, and the side plates at both ends of the upper cover 9 are formed.
13 is slidably abutted from the inside from the inside.

The rear cover 10 is formed to bend into a cross-sectional shape of a letter, and an elastic cover 35 for preventing adhesion of mud is attached to the inner surface of the rear cover 10 with a predetermined gap 36 therebetween. The elastic cover 35 is substantially the same as the left and right width of the rear cover 10,
As in the case of the elastic cover 18, a strip-shaped core 38 with a hook 37 is provided at the front end as shown in FIG.
As shown in the figure, core members 39 each having a U-shaped cross section are embedded therein. The hook 38 is hooked on the engaging portion 40 of the rear cover 10 so that the front end of the elastic cover 35 can be in close contact with the rear cover 10.
It is detachably attached to the rear cover 10 by bolts 41 with tension applied to 35.

At the time of tilling, the elastic covers 18, 35 are kept in a predetermined tension state. At this time, gaps 19 and 36 are formed between the elastic cover 18 and the upper cover 9 and between the elastic cover 35 and the rear cover 10.

Then, when the claw shaft 6 of the rotary till part 5 is rotated to start tillage with the tillage claw 7, the mud splashed by the tillage claw 7 is scattered to the upper cover 9 and the rear cover 10 side, and the inner surface of the mud. It collides with the elastic covers 18,35. Therefore, the elastic covers 18, 35 in the tensioned state always vibrate, so that mud does not adhere to the elastic covers 18, 35. In addition, since the impact at the time of mud collision is reduced by the elastic covers 18 and 35, noise during tilling is also reduced.

The elastic cover 18 always vibrates up and down. However, since the seal portions 34 at the right and left ends of the elastic cover 18 are in elastic contact with the side plates 13 at the left and right ends of the upper cover 9 from inside, the seal portion 34 The inner surface of the side plate 13 is slid in a state of contact with vibration. Therefore, mud does not enter the gap 19 from the beating between the elastic cover 18 and the side plate 13. In addition, since the seal portion 34 is thick, the rigidity is higher than other portions of the elastic cover 18, and there is no fear that the seal portion 34 is easily broken due to mud impact or the like to cause a defective seal, and the seal portion 34 is stable. The maintained sealing effect can be maintained.

Also, at the pivotal connection between the upper cover 9 and the rear cover 10,
Although the mud is relatively easily clogged, the elastic covers 18 and 35 hook the hooks 29 and 37 of the cores 21 and 38 embedded in the engaging portions 31 and 40, respectively, and end the ends of the elastic covers 18 and 35. Since it is in close contact with the upper cover 9 and the rear cover 10, a gap 1
Mud does not penetrate to 9,36.

When removing the elastic covers 18, 35, remove the bolts 24, 41 to loosen the elastic covers 18, 35, and then hook the hooks 29, 37
Just remove from 31,40. Therefore, the elastic covers 18 and 35 can be easily removed, and handling at the time of attachment and detachment can be performed very easily.

In addition, as shown in FIG.
It may be constituted integrally with a round bar material or the like.

(Effects of the Invention) According to the present invention, at both left and right ends of the elastic cover 18, seal portions 34 are provided which are bent inward against the elasticity thereof. Since the elastic cover 18 is elastically contacted from the inside, it is possible to prevent mud from entering the gap 19 from both left and right ends of the elastic cover 18. Further, the mud collides with the elastic cover 18 to vibrate the elastic cover 18 to generate a mud adhesion preventing effect. However, since the seal portion 34 is elastically contacted, the vibration prevents the mud adhesion. Does not hinder. Further, the sealing part 34
Is thicker than the other parts of the elastic cover 18, the rigidity is higher than that of the other parts, and there is no fear that sealing failure due to collision of mud or the like occurs, and a stable sealing effect can be maintained.

Further, in the present invention, a core 21 having a hook 29 is embedded at one end of the elastic cover 18 in the tension direction, and the core 21 is attached so that one end of the elastic cover 18 is in close contact with the inner surface of the upper cover 9.
The hook 29 is hooked on the engaging portion 31 of the upper cover 9, so that it is possible to prevent mud from entering the gap 19 from one end of the elastic cover 18 in the tension direction.

[Brief description of the drawings]

BRIEF DESCRIPTION OF THE DRAWINGS The drawings show an embodiment of the present invention, and FIG.
FIG. 2 is an enlarged view taken along the line AA of FIG. 1, FIG. 3 is a view taken along the line BB of FIG. 2, FIG. 4 is an enlarged sectional view of the rear cover pivoting portion, and FIG. FIG. 6 is a cross-sectional view of an elastic cover attaching portion, FIG. 7 is a side view of a rotary device, and FIG. 8 is a side view of an engaging pin portion of the elastic cover. 1 ... rotary machine frame, 5 ... rotary tillage section, 8 ... rotary cover, 9 ... top cover, 10 ... rear cover,
13 ... side plate, 18, 35 ... elastic cover, 19, 36 ... gap, 2
1,38 core material, 29,37 hook, 31,40 engagement part, 32
... engagement pin, 33 ... guide member, 34 ... seal part.

 ────────────────────────────────────────────────── ─── Continued on the front page (72) Inventor, Shunji Fujimoto 64, Ishizukita-cho, Sakai-shi, Osaka Kubota Iron Works Sakai Works Co., Ltd.

Claims (2)

(57) [Claims] An elasticity for preventing adhesion of mud by providing a predetermined gap (19) between the upper cover (9) and the inner surface of the upper cover (9) covering the rotary tilling portion (5) from above. In a rotary device in which a cover (18) is arranged and the front and rear of the elastic cover (18) are locked on the upper cover (9) side, the inner surface is provided on both left and right ends of the elastic cover (18) against its elasticity. A sealing portion (34) is formed by bending the sealing portion (34), and the sealing portion (34) is formed to be thick and elastically abuts from the inner surface side to the left and right side plates (13) of the upper cover (9). A mud intrusion prevention device for a rotary device, wherein 2. A predetermined gap (19) is provided between the upper cover (9) and the inner surface of the upper cover (9) which covers the rotary tillage section (5) from above. In a rotary device provided with a cover (18), a hook (29) is attached to one end of the elastic cover (18) in the tension direction.
The hook (29) of the core (21) is attached to the upper cover (9) so that one end of the elastic cover (18) is in close contact with the inner surface of the upper cover (9). Engagement part (3
A mud intrusion prevention device for a rotary device, wherein the device is hooked on 1).