JP6204754B2 - Agricultural machine - Google Patents

Description

  The present invention is provided with a work machine body for performing a predetermined work, a central leveling plate provided at the rear of the work machine body so as to be rotatable in the vertical direction, and rotatably provided at the left and right ends of the work machine body. The present invention relates to an agricultural working machine including an extended working body and a rotation drive unit that rotates the extended working body.

  Such a farm work machine includes a work machine main body that is attached to the rear part of the traveling machine body to perform tillage work, and an extension work body left and an extension work body right that are provided at both right and left ends of the work machine main body so as to be foldable and foldable. Are generally known.

  A tilling rotor provided with a plurality of tilling claws for tilling the field is rotatably provided on the working machine main body, the extension working body left, and the extension working body right of the folding scraping working machine.

  In this conventional folding scraping work machine, when the extension work body left and the extension work body right are subjected to maintenance work (for example, tiller rotor claw replacement work, car wash work, etc.), the extension work is performed by a driving means that rotates them. Rotate the body left and the extension work body right so that they are folded. The folding operation of the extension work body left and the extension work body right is performed by the driving means, so the burden on the operator is small.

  On the other hand, when performing maintenance work on the work machine main body, the operator manually moves the leveling body provided rotatably at the rear part of the work machine main body to the work machine main body until the maintenance work is ready. This lifting operation is burdensome for the operator because the leveling body is relatively heavy.

  Therefore, as described in Patent Document 1, the above-described folding scraping work machine is provided with a driving means for rotating the leveling body upward until it can perform maintenance work on the work machine main body (the machine body in the literature). The leveling body may be provided so as to be rotatable. Note that the agricultural working machine described in Patent Document 1 is a tilling work machine (rotary working machine) that plows soil or the like in a field.

JP 2012-110271 A

  However, in the folding scraping work machine, the maintenance work is performed less frequently than the conventional tillage work machine (rotary work machine) described above because the leveling plate of the work machine body is flipped up to perform maintenance work. Providing the driving means used in the folding scraping work machine imposes unnecessary costs.

  The present invention has been made in view of such a problem, and without using a costly waste, the ground leveling plate of the work machine body is flipped up without burden on the operator during maintenance work using an existing power source. The purpose is to provide an agricultural machine that can be used.

  In order to achieve the above object, an agricultural machine according to the present invention includes a work machine main body that performs a predetermined work, a center leveling plate that is provided at the rear of the work machine main body so as to be rotatable in the vertical direction, and An agricultural work machine comprising: an extension work body that is rotatably provided at at least one of the left and right ends; and a rotation drive part that is provided on the work machine body and rotates the extension work body. The main plate and the extension work body are connected via a coupling body, and the extension work body is folded above the work machine main body from the unfolded position where the extension work body is projected to the side of the work machine main body by the rotation drive unit. When rotated to the position, the central leveling plate moves to a position rotated upward with respect to the work implement main body via the connecting body as the extended working body rotates.

  In addition, at least one of the ends of the coupling body of the present invention is detachably connected to the central leveling plate or the extension work body.

The central leveler rotatably provided at the rear portion of the central integer base plate is provided with the present invention, extension work body, an extension leveling plate provided rotatably on the rear in a vertical direction, said extension An extension leveler provided rotatably at the rear part of the leveling plate, one end of the coupling body is connected to the central leveling plate or the central leveler, and the other side end of the coupling body is the extension leveling plate. Or it is connected to the extension leveler.

  Moreover, the length of the connector of the present invention is adjustable.

  According to the agricultural machine according to the present invention, by having the above-described features, the ground leveling plate of the work machine body can be flipped up without burden on the operator during maintenance work by using an existing power source without imposing unnecessary costs. It is possible to provide an agricultural machine that can

The top view of the folding scraping work machine concerning one embodiment of the present invention is shown. The back side partial perspective view of a folding scraping work machine when the extension work body left is in a work position is shown. The side view of a folding scraping work machine when the extension work body left is in a work position is shown. The rear side partial perspective view of a scraping work machine when the extension work body left is rotating from the work position to the storage position side is shown. The front side partial perspective view of a folding scraping working machine when the extension work body left is in a storing position is shown. The side view of a folding scraping work machine when the extension work body left is in a storage position is shown.

  Hereinafter, a preferred embodiment of the present invention will be described with reference to FIGS. In the present embodiment, a folding scraping work machine in which left and right extension work bodies can be folded and unfolded on both sides of a work machine main body among farm work machines will be described as an example. For convenience of explanation, the directions of the arrows shown in FIG. 1 will be described below as the front-rear direction and the left-right direction.

  As shown in FIG. 1 (plan view), the folding scraping work machine 1 is attached to the rear portion of the traveling machine body 90 and proceeds along with the forward traveling of the traveling machine body 90 to perform the scraping work. The folding scraping work machine 1 includes a work machine main body 2 disposed in a central part in the left-right direction with respect to the forward direction, an extension work part left 20L attached to the left and right ends so as to be rotatable in the vertical direction, and an extension work. The work machine main body 2, the extension work part left 20L, and the extension work part right 20R have a three-part structure.

  The work machine body 2 is connected to a front part of a machine body 5 having a main frame 3 extending in the left-right direction by a three-point link coupling mechanism (not shown) provided at a rear part of the travel machine body 90, and On the other hand, it is mounted so that it can be raised and lowered. A gear box 6 having an input shaft 6a protruding forward is provided at the center in the left-right direction of the main frame 3, and power is input from the PTO shaft of the traveling machine body 90 through a power transmission means such as a universal joint to the input shaft 6a. To be communicated to.

  A transmission frame (chain case) 8 and a side frame 9 are suspended from the left and right ends of the main frame 3, and a number of tilling claws are attached between the transmission frame (chain case) 8 and the lower portion of the side frame 9. A tilling rotor 10 (see FIG. 5) is rotatably supported. A transmission mechanism is provided in the main frame 3, and this transmission mechanism is coupled to a transmission mechanism in the transmission frame (chain case) 8, so that the power transmitted to the input shaft 6 a is transmitted to the work machine via these transmission mechanisms. It is transmitted to the tilling rotor 10 (see FIG. 3) provided on the tilling rotor 10 and the extension working part left 20L of the main body 2 and the extension working part right 20R. The tilling rotor 21 provided on the extension working unit right 20R is configured to rotate in a predetermined direction.

  Between the transmission frame (chain case) 8 and the upper part of the side frame 9, a shield cover 11 that covers the upper part of the tilling rotor 10 is provided. A first leveling plate 12 is attached to the rear end portion of the shield cover 11 so that the front end portion is rotatably attached in the vertical direction and the rear side extends obliquely downward. The surface is leveled. A second leveling plate 13 is attached to the rear end portion of the first leveling plate 12 so as to be rotatable in the vertical direction, and the second leveling plate 13 leveles the cultivated soil surface of the field further flat.

  The left and right ends of the work machine body 2 are provided with shaft portions 14 extending in the front-rear direction at positions above the shield cover 11. It is provided in a freely rotatable manner. The extension work part left 20L and the extension work part right 20R are retracted to the upper side of the work machine body 2 via the rotation cylinder left 22L and the rotation cylinder right 22R provided on the left and right sides of the work machine body 2. It can be rotated between Pk (see FIG. 6) and a work position Ps (see FIG. 2) developed to the side of the work implement body 2. The rotation cylinder left 22L and the rotation cylinder right 22R are electro-hydraulic, and their operations are controlled by the control means 75 provided in the work implement body 2.

  The extension work part left 20L and the extension work part right 20R have a symmetrical structure, and the extension work part left 20L will be described. As shown in FIG. 2 (back side partial perspective view) and FIG. 3 (side view), the extension work portion left 20L is provided with side frames 23L and 24L on the left and right sides, and these side frames 23L and 24L. The tilling rotor 21 is rotatably supported between the lower portions of the two, and a shield cover left 25L that covers the upper portion of the tilling rotor 21 is provided between the upper portions of the side frames 23L and 24L. A first leveling plate left 26L is attached to the rear end of the shield cover left 25L so as to be rotatable in the vertical direction, and a second leveling plate left 28L is rotated in the vertical direction at the rear end of the first leveling plate left 26L. It is attached movably.

  An extended leveling plate left 33L (see FIG. 1) is provided at the outer end of the second leveling plate left 28L so as to be rotatable in the vertical direction. As shown in FIG. 1, the extended leveling plate left 33 </ b> L is provided so as to be rotatable about a shaft portion 32 extending in the front-rear direction at the left and right outer ends of the second leveling plate left 28 </ b> L. The extended leveling plate left 33L extends to the outside of the second leveling plate left 28L in the expanded work position, assists the leveling work of the second leveling plate left 28L, and is folded to the front side of the second leveling plate left 28L. When it is rotated to the (storage position), it is stored on the second leveling plate left 28L.

  The extension leveling plate left 33L can be rotated between a storage position and a work position by a turning device 40 provided on the shield cover left 25L of the extension work part left 20L.

  In addition, about the extension work part right 20R, the code | symbol corresponding to the extension work part left 20L is attached | subjected, and description is abbreviate | omitted. Moreover, in FIG.2 and FIG.3, description of the extended leveling board left 33L is abbreviate | omitted.

  As shown in FIG. 1, the first leveling plate left 26L and the second leveling plate left 28L are joined to the first leveling plate 12 and the second leveling plate 13 of the work machine body 2 when the extension working unit left 20L is in the working posture. Then, the connection members 16 and 17 are connected via the connection members 16 and 17 provided on the first leveling plate left 26L and the second leveling plate left 28L. Thus, the first leveling plate left 26L and the second leveling plate left 28L are separated from the outer end portion of the work machine main body 2, and the joining of the first leveling plate 12 and the second leveling plate 13 is released. Yes.

  As shown in FIG. 6, the folding scraping work machine 1 configured as described above includes a hole 12 b provided in the left side plate 12 a of the left side of the first leveling plate 12 of the work machine body 2. And a hole provided in the support plate left 16aL (see FIG. 6) for supporting the connecting member 16 (see FIG. 1) disposed on the right surface side end of the first leveling plate left 26L adjacent thereto. A connecting member left 50 </ b> L that connects between 16 b is provided. Also, the hole 12d provided on the right side plate 12c provided at the right end of the first leveling plate 12 and the left side surface end of the first leveling plate right 26R adjacent thereto are provided. A connecting member right 50 </ b> R that connects the hole 16 b provided in the support plate right 16 a </ i> R that supports the connecting member 16 is provided.

  The connecting member left 50L and the connecting member right 50R are string-like members, and it is even better if they can absorb torsion. Specifically, the connecting member left 50L and the connecting member right 50R are two carabiners connected by one swivel, a chain, a wire, a tension spring, or the like. Since the connecting member left 50L and the connecting member right 50R are the same, the connecting member left 50L will be described below. The connecting member left 50L is a pull capable of pulling the first leveling plate 12 upward with respect to the work implement body 2 when the extension work portion left 20L rotates from the work position Ps to the storage position Pk (see FIG. 6). Has strength.

  Further, the connecting member left 50L has a predetermined upper position (hereinafter referred to as “maintenance”) that allows the tiller rotor 10 of the work machine body 2 to be visually recognized from the rear when the extension working portion left 20L rotates from the working position Ps to the storage position Pk. The work position Pm (refer to FIG. 6) ”) has a length that allows the first leveling plate 12 to be lifted upward with respect to the work implement body 2.

  In addition, even if the model of the folding scraping work machine 1 is changed, that is, the model in which the distance between the hole 12b and the hole 16b at the maintenance work position Pm is different, the connecting member left 50L is different in each model. The length of the connecting member left 50L may be adjustable so that it can be used and the maintenance work position Pm of the first leveling plate 12 can be changed. Further, the connecting member left 50L is used at the time of maintenance work. When the connecting member left 50L is used when working only with the work machine main body 2 with the extended working part left 20L folded, the work machine main body There is a risk that the tillage work by 2 will be insufficient. Therefore, at least one end of the left side of the connecting member 50L, when working only with the work machine main body 2, can release the engagement of the left side of the connecting member 50L and the first leveling plate 12 and the first leveling plate. Removably connected to the main plate left 26L.

  Next, when the folding scraping working machine 1 is subjected to maintenance work, the operation of the folding scraping working machine 1 for rotating the extension working portion left 20L from the working position Ps to the storage position Pk will be described with reference to FIGS. explain. In addition, a present Example demonstrates the case where the connection member left 50L and the connection member right 50R are detachable with respect to the working machine main body 2 grade | etc.,.

  First, as shown in FIG. 2, the folding scraping work machine 1 is moved to a place where maintenance work is possible, and if the extension work part left 20L is not in the working state, the rotating cylinder left 22L is operated (extend) to perform the extension work. The left part 20L is rotated to the work position Ps. Note that the extension work unit right 20R is the same as the extension work unit left 20L, and thus detailed description thereof is omitted.

  Then, the connecting member left 50L is connected between the first leveling plate 12 and the extension work portion left 20L. In the state where the extension work part left 20L has moved to the work position Ps, the first leveling plate 12 is in a state of extending obliquely downward as shown in FIGS. 2 and 3, and the tilling rotor 10 of the work implement body 2 is moved. Visual confirmation from the rear side of the folding scraping work machine 1 is impossible. For this reason, maintenance work cannot be performed on the tilling rotor 10 of the work machine body 2 from the rear side.

  Therefore, as shown in FIG. 4 (back side partial perspective view), when the rotating cylinder left 22L is operated (reduced), the extension working portion left 20L rotates upward with the shaft portion 14 as a rotation fulcrum. Then, with the upward rotation of the extension work portion left 20L, the connecting member left 50L is in a tensioned state and pulls the first leveling plate 12 upward with respect to the work implement main body 2.

  When the rotating cylinder left 22L is further actuated (reduced), the extension working portion left 20L rotates to the storage position Pk above the first leveling plate 12 as shown in FIG. 5 (front partial perspective view). . When the extension work portion left 20L moves to the storage position Pk, as shown in FIG. 6 (side view), the first leveling plate 12 is further lifted upward with respect to the work implement body 2 via the connecting member left 50L. Then, the tilling rotor 10 of the work machine body 2 is moved from the rear side of the folding scraping work machine 1 to the maintenance work position Pm where the visual check can be performed. The first leveling plate 12 moved to the maintenance work position Pm moves to a position having an angle of about 65 ° upward compared to the first leveling plate 12 moved to the work position Ps indicated by a two-dot chain line. For this reason, the tilling rotor 10 can be exposed from the rear side of the folding scraping work machine 1.

  If the first leveling plate 12 of the work machine body 2 and the first leveling plate right 26R of the extension work unit right 20R are connected by the connecting member 16, the operation (reduction of the rotating cylinder left 22L) is reduced. ) To move the first leveling plate 12 to the maintenance work position Pm, the first leveling plate right 26R of the extension work unit right 20R can also be rotated upward and moved to the maintenance work position Pm. For this reason, any one of the rotating cylinder left 22L and the rotating cylinder right 22R may be operated. In this case, only one of the connecting member left 50L and the connecting member right 50R may be provided.

  Further, when the extension work part left 20L and the extension work part right 20R are moved to the storage position Pk, the extension work part left 20L and the extension work part right 20R are substantially inverted, and the extension work part left 20L and the extension work part 20K are extended. Each tilling rotor 21 in the right part 20R is exposed. For this reason, the maintenance work for the extension work part left 20L and the extension work part right 20R can be easily performed.

  Thus, the folding scraping work machine 1 of the present application connects the first leveling plate 12 and the first leveling plate left 26L via the connecting member left 50L, and operates (extends) the rotating cylinder left 22L. The first leveling plate 12 of the work machine body 2 can be moved to the maintenance work position Pm via the connecting member left 50L. For this reason, the first leveling plate 12 can be moved to the maintenance work position Pm using at least one of the rotating cylinder left 22L and the rotating cylinder right 22R which are existing power sources. It is possible to eliminate the need for a dedicated drive source that moves the motor to the maintenance work position Pm. Therefore, the first leveling plate 12 of the work machine body 2 can be flipped up without burden on the operator during maintenance work without incurring unnecessary costs.

1 folding scraping work machine (agricultural work machine)
2 Work implement body 12 First leveling board (central leveling board)
13 Second leveling board (central leveler)
20L Extension work part left (extension work body)
20R Extension work section right (extension work body)
22L Rotating cylinder left (Rotating drive part)
22R Rotating cylinder right (Rotating drive part)
26L 1st leveling board left (extended leveling board)
26R 1st leveling board right (extended leveling board)
28L second leveling plate left (prolongation leveler)
28R second leveling plate right (prolongation leveler)
50L connecting member left (connecting body)
50R Connecting member right (connecting body)
Pk storage position (folding position)
Ps Work position (deployment position)

Claims (4)

A work implement main body for performing a predetermined work, a central leveling plate provided at the rear of the work implement main body so as to be pivotable in the vertical direction, and pivotable at at least one of left and right ends of the work implement main body. An agricultural work machine comprising: an extension working body provided on the rotating work unit provided on the work machine main body and turning the extension working body;
The central leveling plate and the extension work body are connected via a coupling body,
When the extension working body is rotated from the unfolded position where the extension working body projects to the side of the work machine main body to the folding position where the extension work body is folded above the work machine main body by the turning drive unit, Agricultural working machine, wherein the central leveling plate moves to a position rotated upward with respect to the working machine main body via the connecting body as the rotation of the farming machine is performed. The agricultural working machine according to claim 1, wherein at least one end of the coupling body is detachably connected to the central leveling plate or the extension working body. Wherein the rear portion of the central integer base plate provided with a central leveler rotatably mounted,
The extension working body has an extension leveling plate provided at the rear portion so as to be rotatable in the vertical direction, and an extension leveler provided at the rear portion of the extension leveling plate so as to be rotatable.
One end of the connecting body is connected to the central leveling plate or the central leveler, and the other end of the connecting body is connected to the extended leveling plate or the extended leveler. The agricultural machine according to claim 1 or 2. The farm work machine according to any one of claims 1 to 3, wherein the length of the connection body is adjustable.

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