JP2018057410A - Rotary working machine - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a rotary working machine capable of shaking off attached earth and sand more surely.SOLUTION: A rotary working machine includes: a working rotor for performing tilling work by rotation of claws; a shield cover body part for covering an upper part of the working rotor; an apron body part arranged on a rear side of the shield cover body part; and a connection part for rotatably connecting the shield cover body part and the apron body part. On the working rotor side of the shield cover body part, a cover material is provided along the shape of the shield cover body part up to the connection part. A space between the rotation space of the claws and the shield cover body part is provided so as to become larger gradually toward the rear side up to the connection part, and the position of the connection part is made to be higher than the highest point of the rotation space. In the vertical direction with respect to the horizontal surface, a gap is secured between the cover material and the connection part.SELECTED DRAWING: Figure 4

Description

  The present invention relates to a rotary working machine that is attached to a rear portion of a tractor so as to be movable up and down and includes a working rotor.

In a rotary working machine equipped with a working rotor with multiple claws such as a tilling claw projecting around the rotary shaft, such as a tilling work machine, a straw or the like is skimmed into the rear while stirring and reversing the clot with the claws. It is necessary to level the surface with a leveling board (apron).
In addition, it is necessary to improve the tillage performance (especially crushed and flat) with such a rotary working machine.
In order to satisfy this requirement, the shield cover main body is fixed above the work rotor.
Here, the shield cover main body portion extends in the width direction of the rotary working machine, and is supported by a transmission frame that transmits power to the rotary shaft and a support frame that is continuous with the transmission frame across the gear box.

When the inner peripheral surface of the shield cover main body directly faces the rotary shaft, earth and sand adhere to the inner peripheral surface (surface on the working rotor side) of the shield cover main body.
And this adhering earth and sand becomes resistance of the nail | claw which rotates, and will cause the problem of reducing work efficiency.
Therefore, in Patent Document 1 and Patent Document 2, a plate for preventing adhesion of earth and sand is fixed to the inner peripheral surface of the shield cover main body portion for the purpose of preventing adhesion and accumulation of earth and sand to the inner peripheral surface of the shield cover main body portion. Techniques to do this are disclosed.

The adhesion destination of the earth and sand that the claw jumps up with the rotation of the rotary shaft is determined by the rotation direction of the claw (rotary shaft).
For example, when the claw rotates relative to the cultivation ground from the front to the rear in the direction of travel (down cut), the claw scoops up the earth from the front to the rear, so the earth is behind the shield cover body. It often adheres to.

  Further, Patent Document 3 discloses disposing a soil repellent material and removing the earth and sand adhering to the soil repellent material by vibrating the soil repellent material.

  Furthermore, Patent Document 4 discloses a technique for preventing adhesion of earth and sand to the apron main body by fixing a stainless steel plate to the apron main body by welding.

JP-A-11-9002 No. 8-3205 JP 2010-99035 A Japanese Patent Laid-Open No. 7-23604

When an apron member is connected to the rear side of the shield cover main body, there is a situation that a large amount of earth and sand easily adheres to the apron member.
However, the techniques of Patent Document 1, Patent Document 2 and Patent Document 3 can improve the adhesion of earth and sand to the shield cover main body, but cannot be effectively prevented from adhering to the apron main body. It was.
Moreover, in the technique of patent document 1, patent document 2, and patent document 3, there existed a problem that it was difficult to remove the earth and sand which adhered once.

  An object of the present invention is to provide a rotary working machine capable of more surely removing the earth and sand adhering to an apron member.

  The rotary working machine of the present invention includes a work rotor, a shield cover main body that covers an upper portion of the work rotor, an apron main body that is disposed on the rear side of the shield cover main body, and the work rotor of the apron main body. A ground leveling member arranged on the side and abutting the tilling ground and leveling, and a connection part rotatably connecting the shield cover main body part and the apron main body part, and the work rotor of the shield cover main body part A plurality of shield cover side cover members are joined to the side, and the shield cover side cover member is fixed only at a position on one side of the shield cover main body and its circumferential direction, along the shield cover main body. The apron side cover material is joined to the working rotor side of the apron main body part, and the free end part extends in the front direction. The cover material is joined to the apron body by joining means, the front free end extends to the shield cover body, and the rear free end extends in the direction of the leveling member along the apron body. ing.

  Preferably, the apron side cover member is joined to the apron main body portion by a joining means at a position on the connection portion side of the apron main body portion and a position on the leveling member side.

  Preferably, the leveling member is joined to the apron main body portion by a joint portion so as to be detachable from the apron main body portion, and the rear free end portion of the apron side cover member is The joint on the shield cover side of the joint is covered with respect to the working rotor.

  Preferably, the front free end portion of the apron side cover material extends in the direction of the shield cover side cover material along the shield cover main body portion and the apron main body portion, and is connected to the connection portion and the connection portion side. The fixing part of the shield cover side cover material is covered.

  Preferably, a slit is formed in the shield cover main body.

  Preferably, a slit is formed in the apron main body.

  The rotary work machine of the present invention includes a work rotor that performs a tilling work by rotating a claw, a shield cover main body that covers the upper side of the work rotor, an apron main body that is disposed on the rear side of the shield cover main body, A rotary working machine having a leveling member arranged on the working rotor side of the apron main body and abutting a tilling ground for leveling, and a connecting portion for rotatably connecting the shield cover main body and the apron main body. The work rotor side of the shield cover main body portion includes a plurality of shield cover side cover members whose free ends extend in the direction of rotation of the claws along the shield cover main body portion, The shield cover side cover material of the shield cover main body is joined to the work rotor side of the shield cover main body portion at the highest position, and the front side from the joint position. Toward the distal end side of the free end portion, and gradually extends toward the lower direction.

  Preferably, a space between the rotation space of the claw and the shield cover main body is gradually increased toward the rear side, and the position of the connection portion is set higher than the highest point of the rotation space, In all the shield cover side cover materials, the joining position joined to the working rotor side of the shield cover main body is the highest position, and gradually from the joining position toward the distal end side of the free end part. It extends downward.

  Preferably, on the working rotor side of the apron main body portion, an apron side cover having a front free end portion extending in the direction of rotation of the claw and the front free end portion extending toward the shield cover main body portion side. The apron side cover material is disposed on the working rotor side of the apron main body in a state where at least the apron main body is rotated with respect to the shield cover main body and moved to the upper side position. The joining position to be joined is the highest position, and gradually extends downward from the joining position toward the distal end side of the front free end.

  Preferably, the apron side cover material has a substantially highest position when the apron main body is rotated in the downward direction by rotating the apron main body with respect to the shield cover main body. From the joining position, it gradually extends downward toward the tip of the front free end.

  ADVANTAGE OF THE INVENTION According to this invention, the rotary working machine which can screen off the earth and sand adhering to an apron member more reliably can be provided.

It is an external view from the tractor side of the rotary working machine in which the apron member of embodiment of this invention is used. It is an external view from the opposite side to the tractor side of the rotary working machine in which the apron member of embodiment of this invention is used. It is an external view of a working rotor. It is sectional explanatory drawing which looked at the rotary working machine from the left direction. It is explanatory drawing which expanded the back end part of the apron member. It is explanatory drawing of the structure and effect of this embodiment.

<First Embodiment>
Hereinafter, the best mode for carrying out the present invention will be described with reference to the drawings.

  FIG. 1 is an external view from the tractor side of a rotary work machine 10 in which the apron member 1 according to the first embodiment of the present invention is used.

The rotary work machine 10 of FIG. 1 is pulled by a tractor (not shown).
The tractor is disposed at a front position in FIG. 1 and pulls the rotary work machine 10.
The rotary work machine 10 includes a top mast 11 connected to a three-point link hitch mechanism including a top link and a lower link at the rear portion of the tractor, and two link connecting portions 12, and the tractor of the tractor is connected via the three-point link hitch mechanism. It is attached to the rear part so that it can be raised and lowered.
The rotary working machine includes a work rotor 5 and a shield cover main body 2 that covers the work rotor 5.
The shield cover body 2 is formed with a first slit 2a.

A gear box 13 having an input shaft 131 connected to the lower end portion of the top mast 11 from a PTO shaft of the tractor via a universal joint (not shown) is disposed.
A transmission frame 14 and a support frame 15 are installed from the gear box 13 in the width direction of the rotary work machine 10.
The power from the PTO shaft is transmitted to the input shaft 131 via the universal joint and input to the gear box 13.
The direction and the number of rotations are changed by the gear box 13 and transmitted to the transmission shaft inserted through the transmission frame 14.

A chain case 16 is fixed to the front end portion of the transmission frame 14 so as to hang down.
An end cover 17 facing the chain case 16 is fixed to the tip of the support frame 15.
The rotary shaft 6 of the work rotor 5 is installed between the chain case 16 and the end cover 17 so as to be rotatable about the axis. A chain is stretched between the transmission shaft and the rotary shaft 6, and the power of the transmission shaft is transmitted to the rotary shaft 6 through the chain.
A right side shield 18 </ b> R is disposed at a position in the rear side direction of the end cover 17.

Here, the tilling direction (direction in which the tractor is arranged) of the rotary work machine 10 is defined as the front side direction. The opposite direction is defined as the rear side direction.
And the upper direction in the working condition of the rotary work machine 10 is defined as the upper direction. The opposite direction is defined as the lower direction.
Then, when viewed from the rear side direction, the right hand side direction is defined as the right side direction, and the left hand side direction is defined as the left side direction.
In addition, the rotary work machine 10 has many symmetrical members, and those having the same role are given the same reference numerals, and R and L are given to the reference signs, so that the members at the right side position and the left side position members are separated. Distinguish. Here, although the member of both the right direction position and the left direction position exists, the member of the code | symbol which R or L is not provided means both.

Fig.2 (a) is an external view from the opposite side to the tractor side of the rotary working machine 10 in which the apron member 1 of embodiment of this invention is used.
Further, FIG. 2B is opposite to the tractor side of another rotary work machine 10 in which both side portions of the apron member 1 of the embodiment of the present invention are cut out in a substantially triangular shape and a detachable cover is provided at that portion. It is an external view from the side.

As shown in FIG. 2, an apron main body 3 that is connected to the shield cover main body 2 so as to be vertically rotatable is formed in the rear side direction of the shield cover main body 2.
The apron main body 3 is formed so as to cover the rear side direction of the work rotor 5. Moreover, the apron main-body part 3 has played the role which the edge part of the rear side contacts the cultivation ground, and leveled the cultivation ground.
Further, the apron body 3 is formed with a second slit 3a. Even if the second slit 3a is formed in a single through hole shape as shown in FIG. 2 (a), the second slit 3a is composed of a plurality of slits (windows) as shown in FIG. 2 (b). It may be formed.
And the leveling member 4 arrange | positioned at the work rotor 5 side of the apron main-body part 3 is exposed from this 2nd slit 3a.
Most of the leveling member 4 is disposed on the work rotor 5 side of the apron main body 3, but at the rear end position, the work rotor of the apron main body 3 from the work rotor 5 side of the apron main body 3. 5 is formed to wrap around to the opposite side.
The leveling member 4 is joined to the apron main body 3 by the second joint 103.
Here, the leveling member 4 and the apron main body 3 are collectively referred to as an apron member 1.

A left side shield 18 </ b> L integrated with the transmission frame 14 and the chain case 16 with bolts or the like is disposed at the left side position of the apron member 1.
The left side shield 18L is formed on the rear side of the chain case 16.
A right side shield 18 </ b> R integrated with the support frame 15 and the end cover 17 with bolts or the like is disposed at the right side position of the apron member 1.
The right side shield 18R is formed on the rear side of the end cover 17.

A left apron side plate 19 </ b> L that is integrated with the apron main body 3 with bolts or the like is disposed at the left side position of the apron main body 3.
Although not shown, a right apron side plate 19 </ b> R is also disposed at the right side position of the apron main body 3.
The left apron side plate 19L and the right apron side plate 19R are arranged on the inner side of the left side shield 18L and the right side shield 18R. Further, the left apron side plate 19L and the right apron side plate 19R are arranged in parallel with the left side shield 18L and the right side shield 18R.

  The apron side plate 19 and the side shield 18 are provided for the purpose of preventing the earth and sand cultivated by the work rotor 5 from jumping out to the right side and the left side from the cultivating width.

  FIG. 3 is an external view of the working rotor 5.

As shown in FIG. 3, the working rotor 5 is formed of a rotary shaft 6 and a claw 7 integrated with the rotary shaft 6 with bolts or the like.
A claw 7 such as a tilling claw is protruded from the outer periphery of the rotary shaft 6 at an appropriate interval in the circumferential direction. The nail 7 is mainly a nail, but if it has a function of stirring, reversing and scraping the soil on the cultivated ground, it also includes a nail for scraping or crushing.
3 is an external view from substantially the same direction as FIG.

FIG. 4 is a cross-sectional explanatory view of the rotary working machine 10 when viewed from the left side in the tilling work state. Details of the operation of the work rotor and the like in the tilling work state will be described later.
4 is partially different from the work rotor 5 and the claw 7 in FIGS. 1 and 3, but the plowing function and the like are the same, so that the work rotor 5 and the claw 7 are described. This will be described below.

As shown in FIG. 4, the shield cover main body 2 that covers the rotation range of the claw 7 of the work rotor 5 and protects the rotary work machine 10 from earth and sand is arranged.
The shield cover body 2 includes a plurality of cover members 21 arranged in the circumferential direction.
The cover member 21 is arranged in the order of the first cover member 21a, the second cover member 21b, the third cover member 21c, the fourth cover member 21d, and the fifth cover member 21e from the tilling direction.
The first cover material 21a is joined to the shield cover body 2 by the first joining means 221a, the second cover material 21b is joined by the second joining means 221b, and the third cover material 21c is joined by the third joining means 221c.
The fourth cover material 21d is joined to the apron main body 3 by the fourth joining means 221d, and the fifth cover material 21e is joined by the fifth joining means 221e.
The fourth joining means 221d also joins the fifth cover material 21e.
Here, the first joining means 221a, the second joining means 221b, the third joining means 221c, the fourth joining means 221d, and the fifth joining means 221e may be fastening means such as bolts, or may be screws. It may be. Further, for example, a method of engaging by bending by an elastic force at the time of attachment and detachment and returning to the original after the attachment and detachment may be used.

The first cover member 21a has a first free end 121a in the front direction (downstream in the rotational direction of the working rotor 5) from the portion joined to the first joining means 221a.
The second cover member 21b has a second free end 121b in the front direction (downstream in the rotation direction of the working rotor 5) from the portion joined to the second joining means 221b.
The third cover member 21c has a third free end 121c in the front direction (downstream in the rotation direction of the work rotor 5) from the portion joined to the third joining means 221c.
The fourth cover member 21d has a fourth free end 121d in the front direction (downstream in the rotation direction of the working rotor 5) from the portion joined to the fourth joining means 221d.
The fifth cover member 21e has a fifth free end portion 121e in the direction opposite to the fourth bonding means 221d (rear side direction) with respect to the portion bonded to the fifth bonding means 221e.
And then. A second joint 103 for joining the leveling member 4 is provided at a position opposite to the work rotor 5 of the fifth free end 121e.
The first free end 121a, the second free end 121b, the third free end 121c, and the fourth free end 121d can be vibrated by a rod or the like inserted into the first slit 2a.
In addition, the first free end 121a, the second free end 121b, the third free end 121c, and the fourth free end 121d may be inserted into the rotation space of the work rotor 5 at their tips.
Therefore, when the work rotor 5 rotates, the claw 7 comes into contact with the first free end 121a, the second free end 121b, the third free end 121c, and the fourth free end 121d, and the first free end 121a, the second free end 121b, the third free end 121c, and the fourth free end 121d vibrate.
Due to this vibration, earth and sand adhered to the first cover material 21a, the second cover material 21b, the third cover material 21c, and the fourth cover material 21d are screened out.
By the way, the part (connection part 31) which connects between the shield cover main-body part 2 and the apron main-body part 3 has a structure which can be rotated, and earth and sand are easy to adhere to the circumference | surroundings.
By covering the portion with the fourth cover member 21d, it becomes possible to prevent adhesion of earth and sand.
Further, the fourth free end portion 121d can be easily vibrated, and the earth and sand adhering to the fourth free end portion 121d can be screened off by this vibration.
Furthermore, similarly, the second free end portion 121b and the third joint portion are easily connected to the joint portion to which earth and sand easily adhere, for example, the first joint means 221a, the second joint means 221b, the third joint means 221c, and the second joint portion 103. By covering the free end 121c, the fourth free end 121d, and the fifth free end 121e, it becomes possible to prevent adhesion of earth and sand.

  The fifth cover member 21e is joined to the apron member 1 by both ends by the fourth joining means 221d at the front side position for joining the fourth cover material 21d and the fifth joining means 221e at the rear side position.

The cover member 21 is made of a material having high elastic force (having high elasticity) such as rubber, and is formed so as to easily vibrate and deform.
Thus, since the cover material 21 is easily vibrated and deformed, it is possible to easily remove the attached earth and sand.

The shield cover body 2 is formed with a first slit 2a (see also FIG. 1) in a through groove shape.
The first slit 2a includes a joining portion that joins the second cover member 21b to the shield cover body 2 with a bolt or the like, and a joining portion that joins the third cover member 21c to the shield cover body 2 with a bolt or the like. It is formed in the position between.
From the first slit 2a, the third cover member 21c and the like can be directly seen from the external position of the shield cover main body 2. Then, a rod or the like can be inserted into the first slit 2a to directly vibrate the third cover member 21c or the like.
And it is possible to remove the earth and sand adhering to the 3rd cover material 21c etc. by this vibration.

  Here, as shown in FIG. 4, the first cover material 21a, the second cover material 21b, and the third cover material 21c are joined by the first joining means 221a, the second joining means 221b, and the third joining means 221c. The joining position is the highest position, and toward the first free end 121a, the second free end 121b and the third free end 121c extending from the joining position in the direction of rotation of the claw 7 (see the arrow in the figure). The structure gradually extends downward.

  In addition, the fourth cover member 21d also has the joining position joined by the fourth joining means 221d almost at the highest position in the tillage work state, and the direction of rotation of the claw 7 from the joining position (see the arrow in the figure). ) Toward the fourth free end 121d extending to).

  4, the space between the rotation space S of the claw 7 and the shield cover main body 2 is gradually increased toward the rear side, and the shield cover main body 2 and the apron main body 3 This can be realized by setting the height of the connecting portion 31 connecting the gaps higher than the highest point of the rotation space S of the claw 7.

  That is, the shape of the shield cover main body 2 is gradually increased from the front side to the rear side of the rotary working machine 10 without making the shape of the arc along the rotation space S of the claw 7, and in particular, the connection portion 31. Is set to a high position, the joining positions of all the cover materials 21 (21a, 21b, and 21c) from the front side to the rear side can be increased, and the free ends (221a, 121b, and 121c) is gradually extended downward.

  Further, the position of joining by the fourth joining means 221d can be increased behind the highly disposed connecting part 31, and the free end part (121d) is gradually directed downward in the fourth cover member 21d. The configuration can be extended.

  For this reason, at the time of plowing work, even if the cultivated soil enters between the shield cover main body 2 and the cover material 21 or between the apron main body 3 and the cover material 21, the nail 7 Due to the vibration of the free end and the influence of gravity accompanying the contact, the cultivated soil falls on the soil surface, and accumulation of the cultivated soil on the shield cover main body 2 and the apron main body 3 can be suppressed.

  Further, since the space between the rotation space S of the claw 7 and the shield cover main body 2 is gradually increased toward the rear side, all the cover members 21 (21a, 21b, 21c and 21d) located in the space are provided. Can be freely changed in design. For example, the number of cover members 21 can be changed, the height positions and angles of the plurality of cover members 21 can be adjusted, or the plurality of cover members 21 can be changed. It becomes possible to arrange the attachment structure to the shield cover main-body part 2 for every.

  And as shown in FIG. 4, the space | interval between the rotation space S of the nail | claw 7 and the shield cover main-body part 2 was gradually enlarged toward the back side, and the cover material of the vicinity of the connection part 31 set to the high position is shown. 21 (particularly, the third cover material 21c and the fourth cover material 21d) are separated from the rotation space S toward the rear of the rotation space S without being along the rotation space S of the claw 7. At the time of the tilling work in which the claw 7 rotates in the direction, the soil flow becomes smooth, and the soil mass repelled from the soil surface is suppressed from being pressed around the connection portion 31, thereby improving the effect of preventing soil adhesion. it can.

  Further, in the rotary working machine 10 according to the present invention, among the clumps repelled from the soil surface by the rotation of the claws 7, the clumps that have separated from the claws 7 and collided with the cover material 21 are covered with the cover material 21 (21a, The cover material 21 is pushed upward by the elasticity (cushion effect) of 21b, 21c, and 21d), and at the same time, the effect of canceling out the kinetic energy that worked on the soil mass is exerted.

  For this reason, the cover material 21 is pushed up and moved upward, and the clots whose kinetic energy is canceled by the cover material 21 due to the movement are forcibly washed away in the rotation direction of the claws 7 although they are not all clots. In this case, it falls from the position where it has collided with the cover material 21, is returned again into the rotation space of the claw 7, and is crushed by the rotating claw 7, thereby improving the crushed nature. .

Here, the work rotor 5 ′ will be described. The claws 7 ′ are arranged on the mounting flange at intervals that do not interfere with each other in the axial direction of the rotary shaft 6 ′.
The claws 7 ′ adjacent to each other in the axial direction of the rotary shaft 6 ′ are arranged at an angle with respect to the center of the shaft, and the tip of the claw 7 ′ forms an arc shown in FIG. 4 in the entire rotary shaft 6 ′.
The working rotor 5 'is composed of a rotary shaft 6' and a claw 7 'protruding from the outer periphery thereof, and the working rotor 5 becomes a tilling rotor.

The apron main body 3 covering the rear side of the work rotor 5 is connected to the rear end side of the shield cover main body 2 so as to be rotatable around a connection portion 31 parallel to the axis of the transmission frame 14.
In order to keep the contact pressure with the cultivation ground of the apron main body 3 moderately on the surface side of the apron main body 3, that is, the surface opposite to the working rotor 5, the apron main body 3 is pressed and adjusted or flipped up. A compression rod 28 for holding is connected.

One end (upper end) of the coil spring 28a is locked to a locking portion 28b slidable in the axial direction.
The other end (lower end) of the coil spring 28a is movable in the axial direction of the compression rod 28, and is locked to a stopper 29 that can be stopped at an arbitrary position.
Here, the coil spring 28a is always in a state where it bears a compressive force.
The apron main body 3 is connected to the stopper 29, and the stopper 29 moves along the compression rod 28 as the apron main body 3 rotates.

As shown in FIG. 4, when the rotary work machine 10 is operated, the coil spring 28a is in a state of being locked to the locking portion 28b and the stopped stopper 29, and the locking portion 28b is pivoted according to the reaction force of the coil spring 28a. By sliding in the direction, the contact pressure between the apron main body 3 and the cultivated ground is adjusted.
When the apron main body 3 is flipped up, the stopper 29 is moved to the upper end side of the compression rod 28 and stopped, so that the apron main body 3 is kept in the flipped up state.

Note that the state of FIG. 4 shows a state in which the working rotor 5 is operated when the level of the lower end of the apron main body 3 is located, for example, about 200 mm above the level of the lowest point through which the claw 7 passes. .
The level of the lower end of the apron main body 3 can be freely set by adjusting the position of the rear locking portion 28c of the compression rod 28.

  FIG. 5 is an explanatory diagram in which the rear end portion of the apron member 1 is enlarged.

As shown in FIG. 5, the apron main body 3 is formed with a second slit 3a at a position in the rearward direction following the linear first straight portion 3g.
An apron main body wrapping portion 3b having a cross-sectional shape such as a cross section of a droplet is formed at a further rearward position of the second slit 3a.
The apron main body wrapping portion 3b has a substantially straight cross-sectional shape, and has a second straight portion 3c that contacts the tillage ground G and performs leveling.
Further, the apron main body winding portion 3b has a circular arc portion 3d that is continuous with the second linear portion 3c, has a circular curve shape, and changes the direction of about 225 °.
Further, the apron main body winding portion 3b includes a third straight portion 3e that is continuous with the arc portion 3d, has a linear shape, and extends to a position in contact with the second straight portion 3c.
In addition, the apron main body winding portion 3b is continuous with the third straight portion 3e, has a straight shape, extends parallel to the second straight portion 3c, and extends to the same position as the front end portion of the second straight portion 3c. It has a joint 3f.
Although it is not clear from the presence of the second slit 3a, the first straight portion 3g and the second straight portion 3c are continuous in a portion where the second slit 3a is not provided. The first straight line portion 3g and the second straight line portion 3c are assumed to be extended lines, and the first straight line portion 3g and the second straight line portion 3c and the second straight line portions 3c and The angle with the straight line portion 3c is about 135 °.

Since the apron main body wrapping portion 3b has a continuous cross-sectional shape like the cross section of the droplets in this way, the apron main body portion 3 has a rear end in the rear direction while having a structure that can be easily manufactured. It is possible to increase the strength of the part.
In addition, since the apron main body winding portion 3b is provided, the first joint portion 101 can be configured with a simple structure.
Further, the apron main body wrapping portion 3b is formed with the arc portion 3d, whereby work hardening occurs in the arc portion 3d, and the strength can be further increased by an easy method.

Here, the third straight part 3e and the joint part 3f are formed to have an obtuse angle.
Thus, since the 3rd linear part 3e and the junction part 3f are formed so that it may become an obtuse angle, it is possible to prevent earth and sand from entering into the connection part of the 3rd linear part 3e and the junction part 3f. Become.
In addition, since the third straight line portion 3e and the joint portion 3f are formed to have an obtuse angle in this way, it is possible to easily remove the adhering earth and sand.

The leveling member 4 includes, in order from the front direction position, a linear first leveling straight line portion 4a, a curved portion 4b, a substantially straight second leveling straight line portion 4c, and a leveling arc portion 4d having a curved shape. Have
Assuming each extension line of the straight first leveling straight line part 4a and the substantially straight second leveling straight line part 4c, at the intersection of the extension lines of the first leveling straight line part 4a and the second leveling straight line part 4c, The first leveling straight portion 4a and the second leveling straight portion 4c are at an angle of about 135 °.
And the curve part 4b has connected this 1st leveling straight line part 4a and the 2nd leveling straight line part 4c so that it may curve gently.
This curve is curved parallel to the curves of the first straight line portion 3g and the second straight line portion 3c.
Further, the leveling arc 4d is curved in a circular shape, but the curve ends at about 180 °.
Moreover, the curve of the leveling arc portion 4d is curved in parallel with the curve of the arc portion 3d.

  The apron main body 3 and the leveling member 4 are fastened so as to be integrated by a second joint 103 constituted by fastening means such as bolts. More specifically, the first straight portion 3g and the first leveling straight portion 4a are fastened.

Moreover, the apron main-body part 3 and the leveling member 4 are in the engagement state in the 1st junction part 101 which is the edge part position of a rear side direction. Here, the term “engagement” refers to joining by being caught, not particularly by fastening bolts or the like.
More specifically, in the apron main body 3 and the leveling member 4, the arc portion 3d and the leveling arc portion 4d are engaged with each other by joining the same curve in parallel for a certain length.

The apron main body 3 and the leveling member 4 are integrated by the engagement at the first joint 101 and the joint at the second joint 103, and the second joint 103 is integrated only by bringing it into a non-joined state. Can be released.
By the way, the 2nd junction part 103 may be anything as long as it makes the apron main body part 3 and the leveling member 4 detachable (can be joined and released) by an easy method. They may be joined by joints (joining means) such as bolts and nuts. Further, for example, a method of engaging by bending by an elastic force at the time of attachment and detachment and returning to the original after the attachment and detachment may be used.

Further, the leveling member 4 can be directly observed from the external position of the apron main body 3 through the second slit 3a. Then, it is possible to directly oscillate the leveling member 4 by inserting a rod or the like into the second slit 3a.
And the earth and sand adhering to the leveling member 4 can be wiped off by this vibration.
Further, the portion where the second slit 3 a is formed corresponds to the curved portion 4 b portion of the leveling member 4. When the cultivated ground G is leveled, the curved portion 4b often becomes a portion that directly contacts the cultivated ground G. Therefore, a lot of earth and sand may adhere to the curved portion 4b of the leveling member 4.
Therefore, the second slit 3a is provided in a portion corresponding to the curved portion 4b where there is a high possibility that a large amount of the earth and sand is attached, and the earth and sand attached from the second slit 3a can be dropped by vibration. Yes.
Furthermore, since the apron main body 3 can be formed with a small amount of members by the amount of the second slit 3a, the apron main body 3 can be configured to be lightweight.

The apron main body 3 is a member that is subjected to complicated processing such as drilling, bending, and welding of the second slit 3a and the like. Therefore, it may be inconvenient in processing that the apron body 3 is made of a high-strength, low-adhesive material such as stainless steel.
Therefore, it is appropriate to provide a leveling member 4 separately from the apron main body 3 and to configure only the leveling member 4 from a high-strength member such as stainless steel.
Therefore, in this embodiment, the leveling member 4 is provided separately from the apron main body 3, and only the leveling member 4 is made of a high-strength member such as stainless steel, so that the ease of processing of the apron main body 3 is maintained. However, it is possible to make the leveling member 4 high in strength.

Moreover, the leveling member 4 is comprised in order of the 1st leveling straight part 4a, the curve part 4b, and the 2nd leveling linear part 4c, and it becomes possible to level the cultivated ground G smoothly by this. .
That is, the first leveling straight portion 4a or the curve portion 4b comes into contact with the cultivated ground G in a non-leveling state. And since the surface of the leveling member 4 turns to the back side gradually (continuously), it becomes possible for the earth and sand of the cultivation ground G to flow to the back side more smoothly.

The 5th cover material 21e has the 5th free end 121e extended in the back direction rather than the 5th junction means 221e.
The fifth free end 121e extends to a position that covers the second joint 103 from the work rotor 5 side.
In other words, the fifth free end portion 121 e extends from the work rotor 5 to a position where the second joint portion 103 cannot be seen, and is located at a position between the second joint portion 103 and the work rotor 5. A fifth free end 121e which is the rear end of the cover material 21e is located.
By having the fifth free end portion 121e, the second joint portion 103 that is present at a position where the earth and sand are relatively easily attached and has a shape that is relatively easily attached to the earth and sand is covered with the fifth cover material 21e, Sediment adhesion can be prevented.
The fifth free end 121e and the first leveling straight portion 4a are formed substantially parallel to each other, and the fifth free end 121e and the first leveling straight portion 4a are separated from each other by a certain amount of space. Is formed.
Therefore, a space is accessible between the fifth free end 121e and the first leveling straight line portion 4a so that a tool or the like can approach from the rear side (downward direction).
From this space, a tool such as a spanner can be easily inserted into the bolt or the like of the second joint portion 103. And the joining in the 2nd junction part 103 can be easily cancelled | released with tools, such as this spanner. Since the joining at the second joining portion 103 can be easily released, the leveling member 4 can be attached and detached more easily.

As shown in FIG. 5, the fifth cover material 21 e is joined in a both-sided state by the fourth joining means 221 d and the fifth joining means 221 e, and thus is formed to be relatively longer than the other cover materials 21. The fifth cover member 21e is prevented from being displaced from a predetermined position.
Further, since the fifth joining means 221e is located in the vicinity of the second joining portion 103, the position of the fifth free end portion 121e is shifted, and the second joining portion 103 is exposed to the work rotor 5. There is no such thing.

The leveling member 4 is a member with which the earth and sand splashed by the work rotor 5 collide. Further, the leveling member 4 also has a role of leveling the tilled ground G to a uniform and clean surface.
Therefore, there is a high possibility that a lot of earth and sand will adhere to the leveling member 4. Therefore, it is desirable that the leveling member 4 has a lower adhesion to the earth than the apron main body 3.
Further, since the leveling member 4 has a role of leveling the tilled ground G to a uniform and clean surface, it is more preferable that the earth and sand have higher strength than the apron main body 3.
This is because deformation may occur due to the cultivated ground G during leveling. Moreover, many stones are contained in the earth and sand, and this dents the leveling member 4 and damages it. Furthermore, if the leveling member 4 is deformed, dented, scratched, or the like, unevenness or the like is generated on the leveling surface of the cultivated ground G, and a clean leveling surface cannot be obtained.
Therefore, the leveling member 4 is made of stainless steel having high strength and low adhesion. Needless to say, stainless steel is only suitable, and other materials having such properties may be used.
Furthermore, if necessary, for example, fluorine coating or diamond-like coating may be further performed to satisfy these performances.
Further, the leveling member 4 may be made of a material that does not satisfy low adhesion or high strength, and for example, fluorine coating, diamond-like coating, or the like may be performed to satisfy these performances.

  FIG. 6 is an explanatory diagram of the configuration and effects of this embodiment.

When the apron main body 3 and the fourth cover material 21d are rotated with respect to the shield cover main body 2 and moved to the upper side position around the connection portion 31, the fourth cover material 21d The fourth free end 121d opposite to the side joined by the four joining means 221d is configured to be positioned in the rotation space S of the work rotor 5.
In other words, when the apron member 1 is rotated counterclockwise around the connection portion 31, the fourth cover member 21 d can enter (position) into the rotation space S of the claw 7 of the work rotor 5.
At the end of the plowing work or when there is a lot of earth and sand adhering to the cover material during the plowing work, the plowing work is stopped, and in this state, the reverse rotation operation (reverse PTO) is performed to rotate the work rotor 5 clockwise. When the operation) is performed, the claw 7 entrains the fourth free end portion in the front side direction of the fourth cover member 21d, and the fourth cover member 21d vibrates greatly. The forward rotation means that the work rotor 5 is rotated counterclockwise.
This vibration makes it possible to remove the earth and sand adhering to the fourth cover member 21d.

Moreover, since the 4th cover material 21d is also joined to the apron main-body part 3, if the 4th cover material 21d vibrates, the apron main-body part 3 will also vibrate. Furthermore, since the apron main body 3 is also joined to the leveling member 4, when the apron main body 3 vibrates, the leveling member 4 also vibrates.
Accordingly, the leveling member 4 is also vibrated, so that the earth and sand adhering to the leveling member 4 can be removed.

Further, the fourth joining means 221d that joins the fourth cover member 21d also joins the fifth cover member 21e.
For this reason, the fourth cover member 21d can vibrate the fifth cover member 21e more reliably.
In particular, the fifth cover member 21e is a member that does not vibrate relatively because it is both-supported by the fourth joining means 221d and the fifth joining means 221e. Nevertheless, the fourth joining means 221d can join the fourth cover material 21d and the fifth cover material 21e directly to vibrate the fifth cover material 21e reliably.
Therefore, since it has such a structure, it becomes possible to vibrate the 5th cover material 21e, and to screen off the earth and sand adhering to the 5th cover material 21e.

Furthermore, since the apron main body 3 is also joined to the shield cover main body 2, the first cover material 21a, the second cover material 21b, and the third cover material 21c joined to the shield cover main body 2 are connected. Can also be vibrated.
Thereby, the earth and sand adhering to the 1st cover material 21a, the 2nd cover material 21b, and the 3rd cover material 21c can also be wiped off.

  Then, as shown in FIG. 6, the apron main body 3 is moved to the upper side position with respect to the shield cover main body 2, so that the fourth cover material 21 d is compared with the time of tillage work (see FIG. 4). The inclination angle can be made steep.

  That is, the fourth cover member 21d has the fourth joining means 221d at the highest position, and maintains the state of gradually extending downward toward the fourth free end 121d, The position of the means 221d is further increased, and the position of the fourth free end 121d is further decreased.

  Therefore, the cultivated soil that has entered between the apron main body 3 and the fourth cover member 21d effectively falls on the soil surface along the fourth cover member 21d, and the cultivated soil on the apron main body 3 is reduced. There is an effect of suppressing the accumulation of the.

  Here, in the rotary working machine 10 of the present invention, as described above, also during the tilling work (see FIG. 4) in which the apron main body 3 is moved downward with respect to the shield cover main body 2. The joining position joined by the fourth joining means 221d is set to a substantially highest position, and toward the fourth free end 121d extending from the joining position in the direction of rotation of the claw 7 (see the arrow in FIG. 4). The structure gradually extends downward.

  That is, in both the tilling work state (see FIG. 4) and the state in which the apron main body 3 is moved to the upper side position (see FIG. 6), it enters between the apron main body 3 and the fourth cover member 21d. The cultivated soil can be dropped on the soil surface.

  Then, at least in the state where the apron main body 3 is moved to the upper side position (see FIG. 6), the inclination angle of the fourth cover member 21d can be made steep, so that the cultivated soil can be removed more effectively. be able to.

  It should be noted that the irregularity as much as possible for the vibration applied to the fourth cover member 21d is suitable for the removal of earth and sand. Therefore, it is preferable to perform a reverse PTO (clockwise rotation) operation and a normal rotation (counterclockwise rotation) operation.

<Effect of embodiment>
A rotary work machine 10 according to the present invention includes a work rotor 5, a shield cover main body 2 that covers the top of the work rotor 5, an apron main body 3 that is disposed on the rear side of the shield cover main body 2, and an apron main body 3 The leveling member 4 disposed on the working rotor 5 side and leveling in contact with the tillage ground, and the connection portion 31 for rotatably connecting the shield cover main body 2 and the apron main body 3 are provided.
A plurality of first cover members 21a (second cover member 21b, third cover member 21c) are joined to the work rotor 5 side of the shield cover main body 2, and the first cover member 21a (second cover member 21b) is joined. The third cover member 21c) is fixed only at the shield cover main body 2 and the position on one side in the circumferential direction thereof, the free end portion extends in the front direction along the shield cover main body 2, and the apron main body 3 The apron side cover material is joined to the working rotor 5 side.
The apron side cover material is joined to the apron main body 3 by the joining means, the front free end extends to the shield cover main body 2 side, and the rear free end extends along the apron main body 3 to the leveling member 4 side. Extends in the direction.
Since it has such a structure, adhesion of earth and sand to the shield cover main body 2 and the apron main body 3 can be prevented by the cover material 21.
And the cover material 21 vibrates or the earth and sand adhering to the cover material 21 are screened off by the cover material 21 being vibrated.
In particular, of the cover material 21, the fourth cover material 21 d prevents the adhesion of earth and sand to the connection portion 31, and the fifth cover material 21 e prevents the adhesion of earth and sand to the apron main body portion 3. effective.

The apron side cover material is joined to the apron main body 3 by the joining means at the position on the connecting portion 31 side of the apron main body 3 and the leveling member 4 side.
Since it has such a configuration, it is possible to prevent the fifth cover member 21e, which has to be configured relatively long, from being unnecessarily suspended from being caught in the work rotor 5.

The leveling member 4 is joined to the apron main body 3 by a joint and is detachable from the apron main body 3. The rear free end of the apron side cover material is a shield cover of the joint. The side joint is covered with respect to the working rotor.
Since it has such a configuration, it is possible to prevent the earth and sand jumped up by the working rotor 5 from adhering to the second joint portion 103 to which earth and sand are relatively easily attached.
Furthermore, since the leveling member 4 is made of stainless steel or the like, it is possible to increase the strength of the leveling member 4 while maintaining the ease of processing of the apron main body 3.
Furthermore, since the leveling member 4 is made of stainless steel or the like, low adhesion of earth and sand to the apron main body 3 can be achieved.
Further, since the leveling member 4 is configured separately from the apron main body 3, the leveling member 4 made of stainless steel or the like can be easily replaced.

The front free end portion of the apron side cover material extends along the shield cover main body portion 2 and the apron main body portion 3 in the direction of the first cover material 21a (second cover material 21b, third cover material 21c), and the connection portion 31. And the fixing part of the third cover member 21c on the connection part 31 side.
Since it has such a configuration, it is possible to prevent the sediment from adhering to the connecting portion 31 and the sediment from adhering to the third joining means 221c. The four free end portions 121 d can enter the rotation space S of the work rotor 5.
Then, the work rotor 5 is rotated in reverse PTO or forward rotation to vibrate the fourth cover material 21d, and it is possible to reliably remove the earth and sand adhering to the fourth cover material 21d.
Moreover, since it has such a structure, the 5th cover material 21e can also be vibrated and the earth and sand adhering to the 5th cover material 21e can be screened off.
Furthermore, by having such a configuration, the fifth cover member 21e, which is a member that does not vibrate relatively, can be vibrated. That is, the fifth cover is provided while the fifth cover member 221e is provided to prevent inconveniences such as the second cover portion 103 not being covered due to the position of the fifth cover member 21e covering the second joint portion 103 being shifted. The material 21e can be vibrated.

The shield cover body 2 is formed with a first slit 2a.
By having such a configuration, the third cover member 21c and the like can be visually observed from the first slit 2a directly from the external position of the shield cover main body 2. Then, a rod or the like can be inserted into the first slit 2a to directly vibrate the third cover member 21c or the like.

The apron body 3 is formed with a second slit 3a.
Since it has such a structure, it becomes possible to remove the earth and sand adhering to the leveling member 4 easily.
In addition, since the amount of the member can be reduced by the amount corresponding to the second slit 3a, the apron main body 3 can be configured to be lightweight.

In the above description, the rotary work machine 10 has a configuration in which the fourth cover material 21d and the fifth cover material 21e are arranged in the apron main body 3. However, the apron main body 3 has a configuration in which one cover material is arranged. The present invention can be applied even to a rotary working machine.
Further, the present invention is not limited to the above embodiment, and may have various changed structures and configurations.

<Definition etc.>
In the present invention, the term “joint” refers to a fastening joint such as a bolt or a nut, a joint using a screw, an adhesive, an engagement that is sometimes bent by an elastic force, and the bending returns to its original state after attachment or detachment. Engaging engagements, etc. That is, the joining in the present invention may be anything as long as it can integrate two or more members.

2 Shield cover main body 2a First slit 3 Apron main body 3a Second slit 4 Leveling member 5, 5 'Working rotor 7, 7' Claw 21 Cover material 21a First cover material (shield cover side cover material)
21b Second cover material (shield cover side cover material)
21c 3rd cover material (shield cover side cover material)
21d 4th cover material (1st apron side cover material)
21e Fifth cover material (second apron side cover material)
31 connection part 103 2nd junction part (fastening part of leveling member)
121a First free end (free end of first cover material)
121b Second free end (free end of second cover material)
121c 3rd free end part (free end part of 3rd cover material)
121d Fourth free end (free end of the fourth cover material)
121e 5th free end (free end of 5th cover material)
221a First joining means (joining means for the first cover material)
221b 2nd joining means (joining means of 2nd cover material)
221c 3rd joining means (joining means of 3rd cover material)
221d Fourth joining means (joining means for the fourth cover material)
221e 5th joining means (joining means of 5th cover material)
G Cultivated ground S Rotating space L Leveled ground

Claims (7)

A working rotor that performs tillage work by rotating the claws;
A shield cover main body covering the upper side of the working rotor;
An apron body disposed on the rear side of the shield cover body,
A connecting portion for rotatably connecting the shield cover main body and the apron main body;
A rotary work machine having
On the working rotor side of the shield cover main body portion, a cover material is provided up to the connection portion along the shape of the shield cover main body portion,
While gradually providing a space between the rotation space of the claw and the shield cover main body portion toward the rear side until reaching the connection portion, the position of the connection portion is made higher than the highest point of the rotation space,
A rotary working machine in which a gap is secured between the cover member and the connecting portion in a direction perpendicular to a horizontal plane. The cover material is composed of a plurality of cover materials,
Among the plurality of cover materials, the cover material that overlaps with the connection portion in the direction perpendicular to the horizontal plane has the highest joining position where it is joined to the work rotor side of the apron main body, and the front side from the joining position The rotary work machine according to claim 1, which gradually extends downward toward the distal end side of the free end portion.   In the tilling work state in which the apron main body portion is rotated with respect to the shield cover main body portion and moved downward, the joining position of the cover material overlapping the connection portion is greater than the connection portion with respect to the horizontal plane. The rotary work machine according to claim 2, wherein the rotary work machine is at a lower position. The first cover material on the front side adjacent to the cover material overlapping the connection portion is joined to the shield cover main body portion by the first joining means,
The rotary work machine according to claim 2 or 3, wherein a joining position by the first joining means is at a position lower than the connecting portion with respect to a horizontal plane.   The rotary work machine according to claim 4, wherein the cover material overlapping the connection portion overlaps the first joining means in a direction perpendicular to a horizontal plane. The second cover material on the front side adjacent to the first cover material is joined to the shield cover main body by a second joining means,
The rotary work machine according to claim 4, wherein a joining position by the second joining means is higher than the first joining means with respect to a horizontal plane. The third cover material on the front side adjacent to the second cover material is joined to the shield cover main body portion by a third joining means,
The rotary work machine according to claim 6, wherein a joining position by the third joining means is higher than the second joining means with respect to a horizontal plane.

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