JP6061447B2 - Rotary work machine - Google Patents

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, the shield cover main body, and the apron. A connecting portion that rotatably connects the main body portion, a cover material that is joined to the working rotor side of the apron main body portion by a plurality of joining means is disposed, and the shield cover of the cover material When the apron body part and the cover material are rotated with respect to the shield cover body part and moved to the upper side position, the end extended to the body part side rotates the work rotor. It is comprised so that it may be located in space.

  Preferably, the cover material is disposed on the working rotor side of the apron main body portion, and is joined to the apron main body portion together with the first cover material covering the connection portion and the first cover material, And a second cover material that covers up to the front of the leveling member that abuts the tilling ground of the apron main body portion and levels the ground.

Preferably, in the second cover material, only the second cover material is joined to the apron main body by joining means at a position rearward of the joint with the first cover material. Apron material.

  Preferably, the working rotor vibrates the cover material by performing forward rotation and reverse rotation.

  ADVANTAGE OF THE INVENTION According to this invention, it becomes possible to provide the rotary working machine which can remove the earth and sand adhering to an apron member more reliably.

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 as viewed from the left side.
The working rotor 5 ′ in FIG. 4 is partially different from the working rotor 5 in FIGS. 1 and 3 in the method of attaching the tilling claws and the like. explain.

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 material 21 is arranged in the order of the first cover material 21a, the second cover material 21b, the third cover material 21c, the first apron cover material 21d, and the second apron cover material 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 first apron cover material 21d is joined to the apron main body 3 by the first apron joining means 221d, and the second apron cover material 21e is joined by the second apron joining means 221e.
The first apron joining means 221d also joins the second apron cover material 21e.
Here, the first joining means 221a, the second joining means 221b, the third joining means 221c, the first apron joining means 221d and the second apron joining means 221e may be fastening means such as bolts, for example. Etc. 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 first apron cover member 21d has a fourth free end 121d in the front direction (downstream in the rotational direction of the working rotor 5) from the portion joined to the first apron joining means 221d.
The 2nd apron cover material 21e has the 5th free end part 121e in the direction (backward direction) opposite to the 1st apron joining means 221d rather than the part joined to the 2nd apron joining 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 are 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.
By this vibration, earth and sand adhering to the first cover material 21a, the second cover material 21b, the third cover material 21c, and the first apron cover material 21d are screened off.
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 tends to adhere to the circumference | surroundings.
By covering the portion with the first apron cover material (first apron cover material 21d) and the first apron cover material 21d, adhesion of earth and sand can be prevented.
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 second apron cover material 21e is joined to the apron member 1 by both ends by the first apron joining means 221d at the front side position for joining the first apron cover material 21d and the second apron joining means 221e at the rear side position. ing.

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, 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 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 portion 3c are crossed at the intersection of the extended lines of the first straight line portion 3g and the second straight line portion 3c. 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 in parallel with the curve connecting 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 joined together by a second joining portion 103 constituted by joining means such as a bolt. More specifically, the first straight part 3g and the first leveling straight part 4a are joined.

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 2nd apron cover material 21e has the 5th free end part 121e extended in the back direction rather than the 2nd apron joining 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 the second free end portion 121 e is located at a position between the second joint portion 103 and the work rotor 5. The 5th free end part 121e which is a rear side edge part of the apron cover material 21e is located.
Due to the presence of the fifth free end portion 121e, the second apron cover material 21e covers the second joint portion 103 which exists at a position where the earth and sand are relatively easily attached and has a shape to which the earth and sand are relatively easily attached. , Can prevent adhesion of earth and sand.
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 second apron cover member 21e is joined in a both-sided manner by the first apron joining means 221d and the second apron joining means 221e. It is possible to prevent the second apron cover member 21e that has been moved from deviating from a predetermined position.
Further, since the second apron 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 nothing to do.

The leveling member 4 is a member with which the earth and sand splashed by the work rotor 5 collide. Moreover, it is desirable that the leveling member 4 also has a role of leveling the cultivated 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, the leveling member 4 needs to have 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 occurs on the leveling surface of the cultivated ground G, and the leveling surface is not clean.
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 first apron 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 first apron cover material 21d The fourth free end 121d opposite to the side joined by the first apron 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 first apron cover material 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) that rotates 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 first apron cover material 21d, and the first apron cover material 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 first apron cover material 21d.

Further, since the first apron cover material 21d is also joined to the apron main body portion 3, when the first apron cover material 21d vibrates, the apron main body portion 3 also vibrates. 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 first apron joining means 221d joining the first apron cover material 21d also joins the second apron cover material 21e.
Therefore, the vibration of the first apron cover material 21d can more reliably vibrate the second apron cover material 21e.
In particular, the second apron cover material 21e is a member that does not vibrate relatively because the first apron joining means 221d and the second apron joining means 221e are both supported. Nevertheless, the first apron joining means 221d directly joins the first apron cover material 21d and the second apron cover material 21e, and can reliably vibrate the second apron cover material 21e. .
Therefore, since it has such a structure, it becomes possible to vibrate the 2nd apron cover material 21e, and to screen the earth and sand adhering to the 2nd apron 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.

  It should be noted that the irregularity as much as possible for the vibration applied to the first apron cover material 21d is suitable for removing the 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>
The apron member 1 of the present embodiment 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 disposed on the rear side of the shield cover main body, and a shield cover main body 2 And an apron main body portion 3 are rotatably connected to each other.
Moreover, the cover material (the 1st apron cover material 21d, the 2nd apron cover) joined to the working rotor 5 side of the apron main-body part 3 by the some joining means (1st apron joining means 221d, 2nd apron joining means 221e). A material 21e) is provided.
The fourth free end portion 121d of the cover material (first apron cover material 21d, second apron cover material 21e) extended to the shield cover main body 2 side is composed of the apron main body 3 and the cover material (first apron cover material). 21d, the second apron cover material 21e) is configured to be positioned in the rotation space S of the work rotor 5 when it is rotated with respect to the shield cover main body 2 and moved to the upper position. ing.
Since it has such a structure, it becomes possible to vibrate the 1st apron cover material 21d, and to remove the earth and sand adhering to the 1st apron cover material 21d reliably.

The cover materials (first apron cover material 21d, second apron cover material 21e) are arranged on the working rotor 5 side of the apron main body 3, and the first apron cover material 21d and the first apron cover material that cover the connection portion 31 are provided. The second apron cover member 21e is joined to the apron main body 3 together with 21d and covers the front of the leveling member 4 that abuts the tilling ground of the apron main body 3 and levels the ground.
Since it has such a structure, it becomes possible to vibrate the 2nd apron cover material 21e, and to screen the earth and sand adhering to the 2nd apron cover material 21e.

In the second apron cover material 21e, only the second apron cover material 21e is apron by the second apron joining means 221e and the second apron joining means 221e at a position rearward of the first apron joining means 221d with the first apron cover material 21d. It is joined to the main body 3.
By having such a configuration, it is possible to vibrate the second apron cover material 21e, which is a member that does not vibrate relatively. That is, while providing the second apron joining means 221e for preventing inconvenience such as the second apron cover material 21e covering the second joint 103 being displaced and the second joint 103 is not covered, the second apron joining means 221e is provided. It becomes possible to vibrate the 2 apron cover material 21e.

The work rotor 5 vibrates the cover materials (first apron cover material 21d and second apron cover material 21e) by performing forward rotation and reverse rotation.
With such a configuration, irregular vibrations can be given to the first apron cover material 21d.
And it becomes possible to screen the earth and sand adhering to the 1st apron cover material 21d etc. by irregular vibration.

In the above description, the rotary work machine 10 has a configuration in which the first cover member 21a, the second cover member 21b, and the third cover member 21c are arranged in the shield cover main body 2. The present invention can be applied even to a rotary working machine having a configuration in which one cover material is arranged on the apron main body 3 while arranging one cover material.
Further, the present invention is not limited to the above embodiment, and may have various changed structures and configurations.

<Definition etc.>
An example of fastening in the present invention is fastening with bolts and nuts.
Engagement in the present invention refers to joining by being hooked, not particularly by fastening parts (fastening means) such as bolts.
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.

DESCRIPTION OF SYMBOLS 1 Apron member 2 Shield cover main-body part 2a 1st slit 3 Apron main-body part 3a 2nd slit 3b Apron main body surrounding part 4 Leveling member 5 Work rotor 21 Cover material 21d 1st apron cover material (1st cover material)
21e Second apron cover material (second cover material)
121d 4th free end part (end part of 1st apron cover material)
121e Fifth free end (end of second apron cover material)
221d First apron joining means (first joining means)
221e Second apron joining means (second joining means)
G Cultivated ground S Rotating space L Leveled ground

Claims (2)

A working rotor,
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 that rotatably connects the shield cover main body portion and the apron main body portion;
A cover material to be joined by a plurality of joining means is disposed on the working rotor side of the apron main body,
An end portion of the cover material extending toward the shield cover main body side is rotated in the upward direction by rotating the apron main body portion and the cover material with respect to the shield cover main body portion in a state where no tilling work is performed. In a state where it is moved to a position, it is configured to be located in the rotation space of the working rotor ,
The cover material is
A first cover member disposed on the working rotor side of the apron main body and covering the connecting portion;
A second cover material that is joined to the apron main body together with the first cover material and covers the front of the leveling member that abuts on the cultivation ground of the apron main body,
Rotary work machine formed of . 2. The rotary according to claim 1, wherein in the second cover material, only the second cover material is joined to the apron main body by joining means at a position rearward of the joint with the first cover material. Work machine.

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