JPH119002A - Fixation of elastic plate for preventing soil from sticking to rotary working machine - Google Patents

Abstract

PROBLEM TO BE SOLVED: To attach an elastic plate on the lower side of the shield cover with an almost prescribed space to inhibit the soil plowed by the working rotor from sticking to the machine body. SOLUTION: Relating to a rotary working machine that is liftably mounted via the three-point link type hitching mechanism to the rear of the tractor in which the working rotor extending horizontally is covered with the shield cover 20 on its upper side and an elastic plate 30 is fixed on the lower side of the shield cover 20 to prevent the soil plowed by the working rotor from sticking to the machine body, an almost constant space is provided between the lower face of the shield cover 20 and the upper face of the elastic plate 30 for preventing soil-sticking. The face for the elastic plate to be attached is projected toward the main body of the shield cover by an almost prescribed interval. The lower faces at the bolt side ends of the elastic plate for preventing the soil sticking are supported with the upper face 28a of the stopping plate 28 for fixing the soil sticking preventing plate that is vertically set to the both side ends of the shield cover.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a soil adhesion preventing elastic plate for preventing the soil cultivated by a work rotor from adhering to a lower side of a shield cover with a substantially predetermined space opened. The present invention relates to a method for fixing an elastic plate for preventing soil adhesion of a rotary working machine to be installed.

[0002]

2. Description of the Related Art Conventionally, a shield cover covers a work rotor which is mounted on a rear portion of a tractor via a three-point link hitch mechanism so as to be vertically movable and extends in a horizontal direction. 2. Description of the Related Art There is known a rotary working machine in which an elastic plate (rubber plate) for preventing soil from adhering to soil cultivated by a rotor is attached. Then, the soil-adhesion-preventing elastic plate is stretched so as to be in close contact with the lower surface of the shield cover, or the shield cover provided with the soil-adhesion-preventing elastic plate is partially removed in the form of a window. The soil was prevented from adhering to the elastic plate for prevention.

[0003]

However, when the soil-adhesion preventing elastic plate is stretched so as to be in close contact with the lower surface of the shield cover as described above, the elastic force of the soil-adhesion preventing elastic plate is reduced. In addition, the removability of the adhered soil becomes poor. In addition, when the shield cover is partially removed in a window shape, the elasticity of the soil-adhesion preventing elastic plate is improved and the soil releasability is improved, but the durability of the soil-adhesion preventing elastic plate is poor. Problems.

According to the present invention, a substantially constant space (about 1 cm) is provided between the lower surface of the shield cover and the upper surface of the soil adhesion preventing elastic plate, and the soil adhesion preventing elastic plate has an approximately constant elastic force. Rotary work that prevents soil adhesion and improves the durability even if a large impact is applied to the soil adhesion prevention elastic plate, so that the soil adhesion prevention elastic plate is in contact with the shield cover and is not damaged, improving durability An object of the present invention is to provide a method of fixing an elastic plate for preventing soil adhesion of a machine.

[0005]

In order to achieve the above object, the present invention provides: It is mounted on the rear of the tractor via a three-point link hitch mechanism so as to be able to ascend and descend, and covers above a horizontally extending work rotor with a shield cover, and is plowed below the shield cover by the work rotor. In a rotary working machine that stretches a soil adhesion preventing elastic plate for preventing soil from adhering, a substantially constant space is provided between a lower surface of the shield cover and an upper surface of the soil adhesion preventing elastic plate. It is characterized in that an elastic plate for preventing soil adhesion is fixed.

B. A mounting surface of the elastic plate for preventing soil adhesion is projected substantially at a predetermined distance from the shield cover body.

C. The lower surface of both ends of the elastic stopper plate for preventing soil adhesion is supported by the upper surface of a locking plate for fixing the soil adhesion preventing plate provided vertically on both end portions of the shield cover.

[0008]

According to the above-described means, the method for fixing an elastic plate for preventing soil adhesion of a rotary working machine according to the present invention comprises: By providing a substantially constant space between the lower surface of the shield cover and the upper surface of the soil adhesion preventing elastic plate and fixing the soil adhesion preventing elastic plate, soil plowed by the work rotor adheres. Even so, the soil mass and stones mixed in the cultivated soil strike the elastic plate for preventing soil adhesion and cause elastic vibration, so that the soil is separated and falls, thereby preventing the soil from adhering.

[0009] By protruding the mounting surface of the soil adhesion preventing elastic plate substantially at a predetermined distance from the shield cover main body, the space between the soil adhesion preventing elastic plate and the shield cover main body is reliably secured, and the soil adhesion preventing elastic plate is also provided. The elastic plate can be easily attached to and detached from the shield cover body.

[0010] By supporting the lower surface of both sides of the elastic stopper plate for soil adhesion prevention on the upper surface of the locking plate for fixing the soil adhesion prevention plate provided in the longitudinal direction on both side ends of the shield cover,
A support structure for supporting the elastic stopper plate for preventing soil adhesion with the shield cover at a substantially predetermined interval is simplified, and the interval between the elastic stopper plate for preventing soil adhesion and the shield cover is reliably maintained.

[0011]

Embodiments of the present invention will be specifically described below with reference to the accompanying drawings. In FIG. 1 and FIG. 2, reference numeral 1 denotes a tilling rotary having a long length in the left-right direction and having a tilling function. The top of the tilling rotary 1 is provided with a top mast 2 and a lower link connecting portion 3 that are connected to a well-known three-point link hitch mechanism including a top link and a lower link of a tractor (not shown). It is attached to the rear of the tractor so as to be able to move up and down. Also,
Power is transmitted from a PTO shaft of the tractor to an input shaft 4a protruding forward from a transmission gear box 4 provided at the front left and right central portions of the tilling rotary 1 via a universal joint, a transmission shaft and the like.

On both left and right sides of the gear box 4, a transmission frame 6 having a transmission shaft 5 therein and also serving as a main body frame, and a hollow support frame 7 extend horizontally. A chain transmission case 8 is suspended from a side end of the transmission frame 6, and a side frame 9 is suspended from a side end of the support frame 7 so as to face the chain transmission case 8. A rotary shaft 10 is suspended between the lower end of the chain transmission case 8 and the lower end of the side frame 9. A number of tilling claws 11 are attached to the circumference of the rotary shaft 10 to form a tilling rotor 12. And
The power transmitted to the input shaft 4a is gear-shifted in the gear box 4, rotates the transmission shaft 5 to rotate the rotary shaft 10 via the chain transmission case 8, and rotates the tilling rotor 12 in a predetermined direction. And tilling work.

On the front side of the tilling rotor 12, a pair of left and right gauge wheels 13 for adjusting the tilling depth of the tilling rotor 12 is provided. This gauge wheel 13
A wheel arm 13a supporting a gauge wheel 13 at a lower end thereof is inserted into a vertical wheel arm insertion portion 15a of a wheel bracket 15 fixed so as to protrude forward from the main body frame 14, and the axis of the wheel arm 13a is inserted. Insert it so as to be the same as the axis of the portion 15a,
Pin hole 15b formed in wheel arm insertion portion 15a
(2) and one of the many pin holes 13b formed in the wheel arm 13a are aligned, and the locking pin 16 is inserted therethrough to adjust the gauge wheel 13 up and down to fix it.

An upper / lower operation grip 17 is provided at an upper end of the wheel arm 13a. A spring seat 18 is provided at a lower end of a mounting tool 17a of the up / down operation grip 17 and an upper end of the wheel arm insertion portion 15a, respectively. A coil spring 19 as a balancer is interposed between the spring seats 18 to urge the wheel arm 13a upward.

The upper side of the tilling rotor 12 is covered with a shield cover 20, and side covers 21 are provided at both left and right ends of the shield cover 20. At the rear end of the shield cover 20, a front end of an apron 23 is pivotally supported via a pivot 22 so as to be vertically rotatable. Side covers 23a are also provided on both left and right sides of the apron 23. A compression rod 24 is provided between the upper surface of the apron 23 and the main body frame, and a lock pin 25 is provided on the compression rod 24 so that the apron 23 can be locked with the flipped up state.

The soil cultivated by the work rotor 12 is prevented from adhering to the inner surfaces of the right and left side covers 26 of the shield cover 20 (the inner surfaces of the chain transmission case 8 and the side frame 9). Soil adhesion prevention plate 27 made of synthetic resin
Is provided. The soil adhesion preventing plate 27 is locked by sandwiching the upper end of the soil adhesion preventing plate 27 with the side cover portion 26 by the locking plate 28, and the lower portion of the soil adhesion preventing plate 27 is partially attached to the side cover portion 26. On the other hand, it is fixed at three places by Sara bolts 29 having no protruding portions on the surface side.

The lower part of the shield cover 20 is shown in FIG.
As shown in FIG. 3, a rubber plate (elastic plate for preventing soil adhesion) 30 for preventing the soil cultivated by the work rotor 12 from attaching thereto.
Is stretched out. The rubber plate 30 has a substantially constant space S (approximately 1) between its upper surface and the lower surface of the shield cover 20.
cm), the front end portion is fixed to the curled portion 20a of the shield cover 20 by a countersunk bolt 30a, and the rear end portion is fixed to the rear frame 31 by a bolt / nut 30b with a contact plate.

The front surface of the mounting surface of the rubber plate 30 is covered with the shield cover 2 using the curled portion 20a.
The rear frame 31 is spaced from the main body by a predetermined distance, and the rear end of the rear frame 31 is fixed to the rear end 20b of the shield cover 20 main body.
And is protruded at a predetermined interval with respect to. A lower surface of both ends of the rubber plate 30 is provided with a locking plate 2 for fixing a soil adhesion preventing plate 27 provided on both ends of the shield cover 20.
8 is supported by the upper surface.

[0019]

As described above, according to the method for fixing an elastic plate for preventing soil adhesion of a rotary working machine according to the present invention, the following effects can be obtained.

[0020] Since a substantially constant space is provided between the lower surface of the shield cover and the upper surface of the soil adhesion preventing elastic plate to fix the soil adhesion preventing elastic plate, the soil plowed by the work rotor prevents the soil adhesion. Even if it adheres to the elastic plate, the soil mass and stones mixed in the cultivated soil will hit the elastic plate for preventing soil adhesion and elastically vibrate in the space with the shield cover, the soil will be peeled off and fall, preventing the soil from adhering be able to.

[0021] Since the mounting surface of the soil-adhesion preventing elastic plate projects substantially at a predetermined distance from the shield cover main body, the space between the soil-adhesion preventing elastic plate and the shield cover main body is reliably ensured. Further, the elastic plate for preventing soil adhesion can be easily attached to and detached from the position of the shield cover main body.

[0022] The lower surface of both ends of the elastic stopper for preventing soil adhesion is supported by the upper surface of the locking plate for fixing the soil adhesion preventing plate provided vertically on both ends of the shield cover. Can be simplified with a support structure that supports the shield cover at a substantially predetermined interval from the shield cover. In addition, it is possible to reliably maintain the space between the elastic stopper plate for preventing soil adhesion and the shield cover.

[Brief description of the drawings]

FIG. 1 is a side view of an entire tilling rotary equipped with the present invention.

FIG. 2 is a plan sectional view of the main part.

FIG. 3 is a side view of a main part of the present invention.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 Tilling rotary 2 Top mast 3 Lower link connection part 4 Transmission gear box 4a Input shaft 5 Transmission shaft 6 Transmission frame 7 Support frame 8 Chain transmission case 9 Side frame 10 Rotary shaft 11 Tilling claw 11 12 Tilling rotor 13 Gauge wheel 13a Wheel arm 13
b pin hole 14 body frame 15 wheel bracket 15a wheel arm insertion part 15b pin hole 16 locking pin 17 grip for vertical operation 17a mounting tool 18 spring seat 19 coil spring 20 shield cover 20a curled portion 20b
Rear end 21 Side cover 22 Pivot 23 Apron 23a Side cover 24 Compression 25 Lock pin 26 Side cover 27 Soil adhesion preventing plate 28 Locking plate 28a Upper surface 29 Sarabolt 30 Rubber plate (elastic plate for preventing soil adhesion) 30a Sara bolts 30b Bolts and nuts with backing plates 31 Rear frame S Space between the lower surface of the shield cover and the upper surface of the rubber plate

Claims (3)

[Claims] 1. A work cover which is mounted on a rear portion of a tractor via a three-point link hitch mechanism so as to be able to move up and down, and which covers a work rotor extending in a horizontal direction with a shield cover. A rotary work machine that stretches a soil adhesion preventing elastic plate that prevents soil plowed by the soil from adhering; A method of fixing an elastic plate for preventing soil adhesion of a rotary working machine, wherein a space is provided for fixing an elastic plate for preventing soil adhesion. 2. A mounting surface of the elastic plate for preventing soil adhesion,
2. The method for fixing an elastic plate for preventing soil adhesion of a rotary working machine according to claim 1, wherein the projecting portion projects substantially at a predetermined interval from the shield cover body. 3. The lower surface of both sides of the elastic stopper plate for preventing soil adhesion is supported by the upper surface of a locking plate for fixing a soil adhesion preventing plate provided on both side ends of the shield cover in a vertical direction. The method for fixing an elastic plate for preventing soil adhesion of a rotary working machine according to claim 1 or 2, wherein: