JP2016198088A - Working machine - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a working machine which can be switched between a storage state and a working state, hardly causes erroneous operations, and reduces a burden on a user.SOLUTION: A working machine includes: a first working unit having a first cover member and a first ground-leveling member connected to the first cover member so as to rotationally move; a second working unit connected to the first working unit so as to be switched between a storage state and a working state, and having a second cover member and a second ground-leveling member connected to the second cover member so as to rotationally move; a locking unit attached to the second ground-leveling member, and having a first support pillar and a second support pillar extending in a first direction toward the first ground-leveling member in the working state, and a connection part for connecting the first support pillar and the second support pillar; and a receiving unit attached to the first ground-leveling member, and provided slidably with the locking unit in a rotationally moving area of the first ground-leveling member and the second ground-leveling member in a rotationally moving direction of the second ground-leveling member with respect to the second cover member, which stores the locking unit in the working state.SELECTED DRAWING: Figure 3

Description

  The present invention relates to a work machine. In particular, the present invention relates to a work machine capable of switching a part of the work machine between a work state and a storage state.

  Currently, in order to reduce the working hours of farm work, the work machines are being made automatic and various work machines are being developed. In particular, work machines (cultivators and plows) that are attached to the rear of a traveling machine such as a tractor and can be exchanged according to the type of work, such as tillage and plow, are attached to the running machine such as a tractor. It is possible to cope with various farming work only by exchanging, and greatly contributes to the cost reduction of farming work.

  A working machine such as a cultivator or a plow has a working rotor that plows or agitates soil by rotating a work claw. In addition, a work machine having a work rotor has a leveling mechanism behind the work rotor in order to level the soil that has been roughened by the work claws. In these working machines, in order to perform work on the soil efficiently, it is preferable that the width in the direction orthogonal to the traveling direction of the traveling machine is large. However, the work machine needs to travel on a farm road or a general road when moving from a storage place where the work machine is stored to a place where the work is performed (for example, a farm field). Therefore, there is a limit on the width of the work machine.

  Therefore, for example, as in Patent Document 1, by rotating a part of the working unit provided in the working machine, the storage state in which the extended working unit is folded and the working state in which the extended working unit is deployed are switched. Work machines that can do this have been developed. As shown in Patent Document 1, in the case of a working machine that switches from a stored state to a working state by deploying an extension working unit, the working unit and the extension working unit are linked in order to work uniformly on the soil. There is a need. In patent document 1, in order to link a working part and an extension working part, the connection member which connects these is provided.

JP 2012-085595 A

  However, if the extension work part is deployed in a state where the work part provided with the connection member and the extension work part are shifted from the proper position, the work part and the extension work part are connected in a state where the connection member is shifted from the proper position. As a result, there is a problem that the work cannot be performed uniformly on the soil.

  The present invention has been made in view of such a problem, and provides a work machine that can reduce a burden on a user with few malfunctions in a work machine that can be switched between a storage state and a work state. For the purpose.

  A work machine according to an embodiment of the present invention includes a first cover member provided behind a first work rotor that rotates a work claw, and a first leveling member that is rotatably connected to the first cover member. A second cover member provided behind the second working rotor, connected to the first working part and capable of switching between a storage state and a working state and rotating the work claws in the working state; A second working unit having a second leveling member connected to the cover member so as to be capable of rotational movement; a first column attached to the second leveling member and extending in a first direction toward the first leveling member in a working state; The first leveling member and the first leveling member in the rotational movement direction of the second leveling member with respect to the second cover member, the locking unit having the two columns and the coupling unit that connects the first column and the second column, and the first leveling member 2 leveling part Engaging portion and slidably mounted in the rotational movement area of, having a receiving portion for housing the engagement portion in a working state.

  In another aspect, the receiving portion includes a storage portion that stores the locking portion in a working state, and a rotational movement of the first leveling member and the second leveling member in the rotational movement direction of the second leveling member relative to the second cover member. And a guide portion that is slidable with the locking portion in the region and guides the locking portion to the storage portion during switching from the storage state to the working state.

  Moreover, in another aspect, the guide part may have an inclined surface that is inclined with respect to a surface orthogonal to the first direction.

  Moreover, in another aspect, the guide part may be extended along the rotational movement direction of the 2nd leveling member with respect to the 2nd cover member.

  Moreover, in another aspect, in the working state, in the working state, the amount of the engaging portion entering the storage portion is greater than the thickness of any of the first strut, the second strut, and the connecting portion. It may be provided as follows.

  Moreover, in another aspect, the guide part may be integrally formed with the storage part.

  Moreover, in another aspect, the receiving part may be detachably attached to the first leveling member.

  Moreover, in another aspect, you may have further the effect | action part which acts so that a latching | locking part may be pressed in a 1st direction.

  Moreover, in another aspect, the action part may be an elastic member provided on the outer periphery of the first support column and the second support column.

  Moreover, in another aspect, the latching | locking part and the action part may be attached to the 2nd leveling member so that attachment or detachment is possible.

  In another aspect, the first pedestal fixed to the second leveling member and provided with the first opening, the second pedestal fixed to the second leveling member and provided with the second opening, A first contact portion attached to one pedestal and provided with a third opening having a smaller diameter than the first opening; and a fourth opening attached to the second pedestal and having a smaller diameter than the second opening. A second contact portion provided, and the locking portion restricts the operation of the action portion in the first direction, and contacts the first contact portion to operate the locking portion in the first direction. The first opening has a larger diameter than one end of the locking portion, the second opening has a larger diameter than the stopper, and the third opening has a smaller diameter than the stopper. The fourth opening may have a smaller diameter than the action portion.

  In another aspect, the first contact portion may be detachably attached to the first pedestal, and the second contact portion may be detachably attached to the second pedestal.

  In another aspect, the guide portion includes a contact portion including a surface orthogonal to the first direction, and a latch including an inclined surface connected to the contact portion and inclined with respect to the surface orthogonal to the first direction. Part stoppers.

  In another aspect, the contact portion extends along the rotational movement direction of the second leveling member with respect to the second cover member, and the locking portion stopper extends in a direction orthogonal to the direction in which the contact portion extends. Also good.

  Moreover, in another aspect, the latching | locking part has a 1st support | pillar and a 2nd support | pillar, and a latching | locking part stopper is a line segment which has a rotating shaft and a 1st support | pillar centering on the rotating shaft of a 2nd leveling member. May be arranged on a circular arc having a radius of or on a circular arc having a radius of a line segment connecting the rotation axis and the second support column.

  A work machine according to an embodiment of the present invention includes a first cover member provided behind a first work rotor that rotates a work claw, and a first leveling member that is rotatably connected to the first cover member. A second cover member provided behind the second working rotor, connected to the first working part and capable of switching between a storage state and a working state and rotating the work claws in the working state; A second working part having a second leveling member connected to the cover member so as to be rotatable, and a first support and a second support attached to the first leveling member and extending in a direction toward the second leveling member in a working state And the second leveling member and the first leveling in the rotational direction of the first leveling member attached to the second leveling member and attached to the second leveling member. Part Engaging portion and slidably mounted in the rolling movement area, having a receiving portion for housing the engagement portion in a working state.

  A work machine according to an embodiment of the present invention includes a first cover member provided behind a first work rotor that rotates a work claw, and a first leveling member that is rotatably connected to the first cover member. A second cover member provided behind the second working rotor, connected to the first working part and capable of switching between a storage state and a working state and rotating the work claws in the working state; A second working part having a second leveling member connected to the cover member so as to be rotatable, and a first column and a second column attached to the second leveling member and extending in a direction toward the first leveling member in a working state The first leveling member and the second leveling in the direction of rotation of the second leveling member attached to the first leveling member and attached to the first leveling member. Part Has a guide portion having a longitudinal and rolling along the moving direction, and a receiving unit comprising a housing part for housing the engagement portion, the in the working state.

  A work machine according to an embodiment of the present invention includes a first cover member provided behind a first work rotor that rotates a work claw, and a first leveling member that is rotatably connected to the first cover member. A second cover member provided behind the second working rotor, connected to the first working part and capable of switching between a storage state and a working state and rotating the work claws in the working state; A second working part having a second leveling member connected to the cover member so as to be rotatable, and a first support and a second support attached to the first leveling member and extending in a direction toward the second leveling member in a working state And the second leveling member and the first leveling in the rotational direction of the first leveling member attached to the second leveling member and attached to the second leveling member. Part Has a guide portion having a longitudinal and rolling along the moving direction, and a receiving unit comprising a housing part for housing the engagement portion, the in the working state.

  According to the working machine which concerns on this invention, in the working machine which can switch a accommodation state and a working state, the working machine which can reduce the burden on a user with few malfunctions can be provided.

It is a top view which shows the whole structure of the working machine in the working state which concerns on one Embodiment of this invention. It is a side view showing the whole work implement composition in the operation state concerning one embodiment of the present invention. It is a top view which shows the connection structure of the working part of the working machine in the working state which concerns on one Embodiment of this invention, and an extension working part. It is a rear view which shows the connection structure of the working part of the working machine in the working state which concerns on one Embodiment of this invention, and an extension working part. It is a top view which shows the state before a latching | locking part and a receiving part connect in the connection structure of the working part of the working machine which concerns on one Embodiment of this invention, and an extension work part. It is a rear view which shows the state before a latching | locking part and a receiving part connect in the connection structure of the working part of the working machine which concerns on one Embodiment of this invention, and an extension working part. It is a top view which shows the structure of the receiving part of the working machine which concerns on one Embodiment of this invention. It is a 1st side view which shows the structure of the receiving part of the working machine which concerns on one Embodiment of this invention. It is a 2nd side view which shows the structure of the receiving part of the working machine which concerns on one Embodiment of this invention. It is a side view which shows the support structure which supports a latching | locking part in the connection structure of the working part of the working machine which concerns on one Embodiment of this invention, and an extension work part. It is a side view which shows the attachment method of the support structure of the latching | locking part of the working machine which concerns on one Embodiment of this invention. It is a side view which shows the attachment method of the support structure of the latching | locking part of the working machine which concerns on one Embodiment of this invention. It is a side view which shows the attachment method of the support structure of the latching | locking part of the working machine which concerns on one Embodiment of this invention. It is a side view which shows the attachment method of the support structure of the latching | locking part of the working machine which concerns on one Embodiment of this invention. It is a top view which shows the structure of the latching | locking part of the working machine which concerns on the modification of one Embodiment of this invention. It is a top view which shows the structure of the latching | locking part of the working machine which concerns on the modification of one Embodiment of this invention. It is a top view which shows the structure of the latching | locking part of the working machine which concerns on the modification of one Embodiment of this invention. It is a side view which shows the structure of the latching | locking part of the working machine which concerns on the modification of one Embodiment of this invention. It is a top view which shows the structure of the receiving part of the working machine which concerns on one Embodiment of this invention. It is a 1st side view which shows the structure of the receiving part of the working machine which concerns on one Embodiment of this invention. It is a 2nd side view which shows the structure of the receiving part of the working machine which concerns on one Embodiment of this invention. In the connection structure of the working unit and the extended working unit of the working machine according to the embodiment of the present invention, the second leveling member rotates upward with respect to the first leveling member in a state where the locking unit is not connected to the receiving unit. It is a side view which shows a state. FIG. 6 is a side view showing a state in which the locking portion is locked by the locking portion stopper in the connection structure of the working portion and the extension working portion of the working machine according to the embodiment of the present invention.

  Hereinafter, a working machine according to the present invention will be described with reference to the drawings. However, the working machine of the present invention can be implemented in many different modes, and is not construed as being limited to the description of the embodiments described below. Note that in the drawings referred to in this embodiment, the same portions or portions having similar functions are denoted by the same reference numerals, and repetitive description thereof is omitted. In addition, for convenience of explanation, the description will be made using the terms “upper” or “lower”, but the upper and lower parts respectively indicate directions in the working state of the work implement. Similarly, the term “front” or “rear” will be used for description, but the front indicates the direction of the traveling machine that pulls the working machine relative to the work machine, and the rear indicates the direction of the working machine relative to the traveling machine.

<Embodiment 1>
The overall configuration of the working machine and the functional units of the working machine according to the first embodiment of the present invention will be described with reference to FIGS. The working machine according to the first embodiment of the present invention is connected to the rear part of a traveling machine such as a tractor and is used for a working machine that plows or agitate soil by rotating a work claw, such as a tiller or a substitute shaving machine. be able to. In addition, the working machine according to the first embodiment includes a storage state in which a part of the working machine is folded or detached so that the width of the working machine is narrowed, and a part of the working machine is expanded or attached. It can be used for a work machine capable of switching between a work state with a wider width. In the first embodiment, a description will be given of the features of the present invention using a shaving machine as an example of a working machine. However, the working machine according to the present invention may be a cultivator and may be a working machine other than the cultivator and the shaving machine. It can also be applied.

[Configuration of Work Machine 10]
FIG. 1 is a top view showing an overall configuration of a working machine in a working state according to an embodiment of the present invention. FIG. 2 is a side view showing the overall configuration of the working machine in a working state according to an embodiment of the present invention. As shown in FIGS. 1 and 2, the working machine 10 according to the first embodiment includes a working unit 100, an extended working unit 200, a switching unit 300, a connecting unit 400, a leveler control unit 500, and a rotor unit 600.

  The working unit 100 (first working unit) includes a shield cover 110, an apron 120 (first cover member), and a leveler 130 (first leveling member).

  Here, the shield cover 110 and the apron 120 are connected using the connecting portion 122 as a rotational movement axis (rotating axis). In addition, the apron 120 and the leveler 130 are connected using the connecting portion 132 as a rotation shaft. The connection part 122 and the connection part 132 have a hinge-like hinge. That is, the connection part 122 and the connection part 132 have a cylindrical part fixed to one member and a columnar part that penetrates the cylindrical part and is fixed to the other member. The apron 120 suppresses the scattered matter scattered by the operation of the rotor unit 600 from being released to the outside. Further, the leveler 130 leveles the soil that has been roughened by the operation of the rotor unit 600 (see FIG. 2).

  The extension work unit 200 (second work unit) is connected to the work unit 100 so that the work machine 10 can be switched between a storage state and a work state. Here, the storage state is a state in which the work machine has a reduced width in a direction orthogonal to the traveling direction of the traveling machine. Specifically, a state in which the extension working unit 200 is folded by rotating (turning) with respect to the working unit 100 is referred to as a storage state. The working state is a state in which the working machine is extended in a direction orthogonal to the traveling direction of the traveling machine. Specifically, the extended working unit 200 is rotated with respect to the working unit 100 from the stored state, and the developed state is referred to as a working state.

  Similarly to the working unit 100, the extended working unit 200 includes an extended shield cover 210, an extended apron 220 (second cover member), and an extended leveler 230 (second leveling member). The extension shield cover 210 is provided above the second work rotor provided corresponding to the extension work part 200 in the rotor part 600 that rotates the work pawl 610 (see FIG. 2). The extension apron 220 is provided behind the second working rotor, and is connected to the extension shield cover 210 so as to be rotatable about the connection portion 222 as an axis. The extension leveler 230 is provided behind the second working rotor, and is connected to the extension apron 220 so as to be rotatable about the connection portion 232 as an axis. The extended apron 220 is interlocked with the apron 120 and suppresses the scattered matter scattered by the work of the rotor unit 600 from being released to the outside. Further, the extension leveler 230 works with the leveler 130 to level the soil that has been roughened by the operation of the rotor unit 600.

  The switching unit 300 includes a control cylinder 310 and a connection unit 320, and switches the storage state and the working state by rotating the extension working unit 200 with respect to the working unit 100. The control cylinder 310 has one end connected to the working unit 100 and the other end rotatably connected to a connection unit 312 fixed to the extension working unit 200. The extension working unit 200 is folded and switched to the retracted state when the control cylinder 310 contracts, and is expanded and switched to the working state when the control cylinder 310 extends.

  The connecting part 400 is attached to the leveler 130 of the working part 100 and the extension leveler 230 of the extension working part 200, and the apron 120 in the turning direction of the leveler 130 with respect to the apron 120 or the turning direction of the extension leveler 230 with respect to the extension apron 220. And the relative operating range of the extended apron 220 is restricted. That is, the connection part 400 makes the leveler 130 and the extension leveler 230 interlock. In addition, the connecting portion 400 includes a locking portion 410 attached to the extension leveler 230 and a receiving portion 420 attached to the leveler 130.

  The leveler controller 500 is connected to the shield cover 110 and the leveler 130 and adjusts the position and angle of the leveler 130 with respect to the shield cover 110. The leveler controller 500 acts on the shield cover 110 and the leveler 130 so that the leveler 130 has a predetermined height or angle set with respect to the ground.

  Here, as shown in FIG. 2, the rotor unit 600 includes a work claw 610 and a power unit 620. The work claws 610 are rotated by the power unit 620 and plow or agitate the soil by acting on the soil. In FIG. 2, a range in which the work claw 610 rotates is shown as a rotation range 612.

  Here, at the end of the extension leveler 230, a leveler extension 510 that can further widen the leveling ability is provided. The leveler extension 510 is pivotally connected to the extension leveler 230. Further, the leveler extension 510 extends in a direction inclined with respect to the extending direction of the leveler 130 and the extension leveler 230 (has a longitudinal length).

  Further, a mulch plate 520 is provided on the traveling machine side of the shield cover 110. The earth retaining plate 520 is attached so as to be slidable in a direction orthogonal to the traveling direction of the traveling machine. When the working machine 10 is used, the mulching board 520 is installed in accordance with the position of the wheel or the like of the traveling machine, and alleviates the level difference caused by the heel.

[Configuration of Connecting Portion 400]
The structure of the connection part 400 which connects the leveler 130 and the extension leveler 230 is demonstrated in detail using FIG.3 and FIG.4.

  FIG. 3 is a top view showing the connection structure of the working unit and the extension working unit of the working machine in the working state according to the embodiment of the present invention. FIG. 4 is a rear view showing the connection structure of the working unit and the extended working unit of the working machine in the working state according to the embodiment of the present invention.

  As shown in FIG. 3, the locking portion 410 of the work machine 10 according to the present invention includes a first support column 412, a second support column 414, a support column connection unit 416, and a stopper 418. The first support column 412 and the second support column 414 extend in the D1 direction from the extension leveler 230 toward the leveler 130 in the working state. The strut connecting portion 416 extends in a direction intersecting the D1 direction, and connects the first strut 412 and the second strut 414. As shown in FIG. 3, since the column connecting part 416 connects the respective ends of the first column 412 and the second column 414, the locking unit 410 has a U-shape. The stopper 418 is provided on each of the first support column 412 and the second support column 414. The stopper 418 is provided in an annular shape around each of the first support column 412 and the second support column 414, and is fixed to each of the first support column 412 and the second support column 414 by a method such as welding.

  The receiving unit 420 of the work machine 10 according to the present invention includes a leveler 130 and a rotation region of the extension leveler 230 in the rotation direction of the extension leveler 230 with respect to the extension apron 220 (hereinafter referred to as a rotation region of the extension leveler 230 with respect to the leveler 130). ) Is provided so as to be slidable (slidable or slidable) with the latching portion 410 and accommodates the latching portion 410 in the working state. That is, the receiving part 420 has a shape that allows the locking part 410 and the receiving part 420 to come into contact with each other even when the leveler 130 and the extended leveler 230 are rotated in opposite directions. In other words, when the leveler 130 and the extended leveler 230 are connected, the receiving part 420 contacts the locking part 410 so as to prevent the leveler 130 and the extended leveler 230 from being connected at an inappropriate position. To do.

  As shown in FIG. 4, the receiving part 420 includes a storage part 422 and a guide part 424. The storage portion 422 stores the locking portion 410 in the working state shown in FIGS. The guide portion 424 is provided so as to be slidable with the locking portion 410 in the rotation region of the extension leveler 230 with respect to the leveler 130. Here, the guide part 424 guides the engaging part 410 to the storage part 422 while the extension work part 200 is switched from the storage state to the work state. In other words, the guide unit 424 slides the locking unit 410 to guide the storage unit 422 when the work machine 10 is switched from the storage state to the work state with the leveler 130 and the extension leveler 230 being shifted from the proper positions. To do. Here, the guide portion 424 has an inclined surface that is inclined with respect to a surface orthogonal to the D1 direction.

  Further, as shown in FIGS. 3 and 4, the receiving part 420 is provided so that the locking part 410 can sufficiently enter the storage part 422 in the working state. In other words, it can also be said that the receiving part 420 is provided so that the amount of the engaging part 410 entering the storage part 422 is larger than the thickness of the column connecting part 416 in the working state. Therefore, even when an external force in the vertical direction is applied to the leveler 130 or the extended leveler 230, the connection between the leveler 130 and the extended leveler 230 is not released, and the connected state is maintained. In addition, since the engaging portion 410 is sufficiently inserted into the storage portion 422, the operation of the engaging portion 410 in the front-rear direction is a restricting plate support portion 4226 disposed in front and rear of the receiving portion 420 (see FIG. 7 for details). Explained). Therefore, even when an external force in the front-rear direction is applied to the leveler 130 or the extension leveler 230, the connection between the leveler 130 and the extension leveler 230 is not released and the connection state is maintained. Here, the receiving portion 420 is detachably attached to the leveler 130 by a fixing tool 432 such as a screw.

  As shown in FIGS. 3 and 4, a first pedestal 452 and a second pedestal 454 are fixed to the extension leveler 230. A first contact portion 456 is attached to the first base 452 so as to be detachable by a fixing tool 434 such as a screw. A second contact portion 458 is attached to the second base 454 so as to be detachable by a fixing tool 436 such as a screw. Each of the first pedestal 452, the second pedestal 454, the first contact portion 456, and the second contact portion 458 is provided with an opening. The first support column 412 and the second support column 414 of the locking part 410 are attached to the extension leveler 230 by being disposed so as to penetrate the opening. That is, the latching | locking part 410 is attached to the extension leveler 230 with the following elastic member 440 so that attachment or detachment is possible.

  Further, an elastic member 440 is provided on the outer periphery of the first support column 412 and the second support column 414 of the locking portion 410. 3 and 4 exemplify a configuration in which a spring coil is used as the elastic member 440, the configuration is not limited to this configuration. For example, elastic rubber may be provided on the outer periphery of the first support column 412 and the second support column 414. The elastic member 440 is locked to the stopper 418 and the second contact portion 458 of the locking portion 410 and is provided so as to act in a direction in which the stopper 418 and the second contact portion 458 are pressed. Here, since the second contact portion 458 is fixed to the extension leveler 230, it can be said that the elastic member 440 acts to press the locking portion 410 in the D1 direction. In other words, it can be said that the elastic member 440 is biased in the direction D1 with respect to the locking portion 410.

  On the other hand, the first support column 412 and the second support column 414 on the side opposite to the support column connecting portion 416 are provided so as to be slidable through openings provided in the second pedestal 454 and the second contact portion 458. That is, the locking portion 410 can move within the operating range of the elastic member 440 in the D2 direction opposite to the D1 direction.

  Here, in FIGS. 3 and 4, the elastic member 440 having elasticity is illustrated as a means for urging the locking portion 410 in the D1 direction, but the invention is not limited to this means. For example, the locking portion 410 can be urged in the direction D1 using a hydraulic cylinder or other mechanical means. The elastic member 440 and the mechanical means described above can also be referred to as an action portion. That is, the elastic member 440 can be replaced with an action part.

[Operation of Connecting Unit 400]
FIG. 5 shows a case where the leveler 130 and the extension leveler 230 are connected in a state where the extension leveler 230 is not appropriate for the leveler 130 (that is, the state where the extension leveler 230 is rotated at a certain angle with respect to the leveler 130). And it demonstrates using FIG.

  FIG. 5 is a top view showing a state before the locking part and the receiving part are connected in the connection structure of the working part and the extension working part of the working machine according to the embodiment of the present invention. FIG. 6 is a rear view showing a state before the locking part and the receiving part are connected in the connection structure of the working part and the extension working part of the working machine according to the embodiment of the present invention. The state shown in FIGS. 5 and 6 is a state in which the extension working unit 200 is deployed in the working state with the extension apron 220 and the extension leveler 230 rotating upward with respect to the apron 120 and the leveler 130. When the locking part 410 approaches the receiving part 420 in a state where the apron 120 and the leveler 130 are shifted upward from the proper positions, the locking part 410 contacts the guide part 424.

  When the extension working part 200 is further deployed in a state where the locking part 410 and the guide part 424 are in contact, the locking part 410 is pushed by the guide part 424 and slides in the D2 direction. 5 and 6 show a state where the locking portion 410 slides in the D2 direction and the elastic member 440 is compressed. In this state, the locking portion 410 is biased in the D1 direction under the action of the elastic member 440.

  Here, since the guide portion 424 has an inclined surface that is inclined with respect to the surface orthogonal to the D1 direction and faces the storage portion 422, the guide portion 424 is further guided in a state where the locking portion 410 is in contact with the guide portion 424. When biased in the direction of the part 424, the locking part 410 is guided to the storage part 422.

  5 and 6 show a case where the extension working unit 200 is deployed in a working state in a state of being rotated upward with respect to the working unit 100, and therefore, the locking unit 410 is provided on the guide unit 424 provided above. When the extension working unit 200 is deployed in a working state in a state of rotating downward with respect to the working unit 100, the locking unit 410 comes into contact with the guide unit 424 provided below, and the storage unit To 422. In other words, the shape of the guide part 424 is such that the locking part 410 contacts the guide part 424 in the rotation range of the extension work part 200 with respect to the work part 100.

[Configuration of receiving portion 420]
The structure of the receiving part 420 of the connection part 400 is demonstrated in detail using FIG. FIG. 7 is a top view showing the structure of the receiving part of the working machine according to the embodiment of the present invention. FIG. 8 is a first side view showing the structure of the receiving part of the working machine according to the embodiment of the present invention. FIG. 9 is a second side view showing the structure of the receiving part of the working machine according to the embodiment of the present invention. The first side view of FIG. 8 is a side view seen from the direction D3 in FIG. The second side view of FIG. 9 is a side view seen from the direction D4 in FIG.

  The guide part 424 of the receiving part 420 has an upper guide part 4242 and a lower guide part 4244. The storage portion 422 of the receiving portion 420 includes an upper restriction plate 4222, a lower restriction plate 4224, and a restriction plate support portion 4226. The upper guide portion 4242 and the upper restriction plate 4222 are integrally formed. That is, it can be said that the guide portion 424 is integrally formed with the storage portion 422. The upper guide portion 4242 and the upper restriction plate 4222 can be formed by a method such as sheet metal processing, for example. Further, the lower guide portion 4244 and the lower restricting plate 4224 are integrally formed, and can be formed by a method such as sheet metal processing in the same manner as described above. The restricting plate support 4226 is connected to the upper restricting plate 4222 on its upper surface and connected to the lower restricting plate 4224 on its lower surface. The upper restriction plate 4222, the lower restriction plate 4224, and the restriction plate support portion 4226 can be connected to each other by a method such as welding.

  As shown in FIG. 7, the upper restricting plate 4222 is provided with a fixing hole 4262. A fixing hole 4264 is provided in the lower restriction plate 4224. Further, the lower restricting plate 4224 is provided with a fixing hole at the same position as the fixing hole 4262 of the upper restricting plate 4222 in a top view. The lower restricting plate 4224 is fixed to the leveler 130 by the fixing tool 432 passing through the fixing hole 4264. The upper restricting plate 4222 and the lower restricting plate 4224 are fixed to the leveler 130 by the fixing tool 432 penetrating through both the fixing holes of the fixing hole 4262 provided in the fixing hole 4262 and the lower restricting plate 4224 at the same position. Is done.

  Here, the restriction plate support 4226 is provided in front (D3 direction) and rear (reverse direction of D3) of the upper restriction plate 4222 and the lower restriction plate 4224. As described above, the restricting plate support portion 4226 provided in the front-rear direction restricts the operation in the front-rear direction of the locking portion 410 that has entered the storage portion 422. Here, in order to further enhance the effect of restricting the operation of the locking portion 410 in the front-rear direction, the restriction plate support portion 4226 extends beyond the ends of the upper restriction plate 4222 and the lower restriction plate 4224 in the direction of the locking portion 410 ( It may extend in the opposite direction of D4. Further, the restriction plate support 4226 is provided so as to protect the fixture 432 penetrating through the fixing hole 4262. In the example shown in FIG. 7, the restriction plate support portion 4226 is provided in two orthogonal directions (one in the D3 direction and one in the D4 direction) of the fixture 432 penetrating the fixing hole 4262.

  As shown in FIG. 8, the upper guide portion 4242 is longer than the lower guide portion 4244 and is thicker. Further, the inclination angle of the upper guide portion 4242 and the inclination angle of the lower guide portion 4244 are different from each other. The inclination angle of the upper guide portion 4242 with respect to the plane orthogonal to the direction D1 is an acute angle compared to the inclination angle of the lower guide portion 4244 with respect to the same plane as described above. The distal end portion of the upper guide portion 4242 and the distal end portion of the lower guide portion 4244 are designed so as not to cross the end portion of the leveler 130. In particular, as shown in FIG. 6, an end portion of the leveler 130 is provided with a drop-off preventing portion 134 that suppresses the locking portion 410 from dropping downward. The drop-off prevention part 134 is provided at a certain distance in the left-right direction from the tip of the lower guide part 4244, and when the tip of the lock part 410 comes off the lower guide part 4244, 410 is designed to be locked to the drop-off prevention part 134.

  Further, as shown in FIG. 9, the upper guide portion 4242 extends in the D5 direction. In other words, it can also be said that the upper guide portion 4242 has a shape having a length in the D5 direction. Here, the D5 direction is a direction along the rotation direction of the extension leveler 230 with respect to the leveler 130 to which the receiving portion 420 is attached. The upper guide portion 4242 extends in the D5 direction so that the upper guide portion 4242 can come into contact with the locking portion 410 in the rotation range of the leveler 130 and the extension leveler 230. For example, even when the leveler 130 is in the soiling state (the state where the leveler 130 is rotated downward) and the extension leveler 230 is rotated upward, the upper guide portion 4242 can come into contact with the locking portion 410. Thus, the upper guide portion 4242 extends in the direction D5. Here, the upper guide portion 4242 is illustrated as extending in the rotational direction of the extension leveler 230 with respect to the leveler 130, but the upper guide portion 4242 has the apron 120 and the extension in the rotational direction of the extension apron 220 relative to the extension shield cover 210. The apron 220 may extend along the rotation direction.

  As described above, according to the working machine 10 according to the first embodiment of the present invention, in the working unit 100 and the extending working unit 200 both having an apron and a leveler rotatably connected to the apron, the extending working unit 200 is operated. Even when the extension leveler 230 rotates with respect to the leveler 130 and is not in an appropriate state when deployed from the housed state to the working state with respect to the portion 100, the locking portion 410 and the receiving portion 420 are It is possible to suppress the locking in the shifted state. Therefore, it is possible to provide a working machine that can reduce the burden on the user with few malfunctions.

  In addition, since the receiving part 420 has the guide part 424, when the extension working part 200 is deployed in an unsuitable state when the extension leveler 230 rotates with respect to the leveler 130, the locking part 410 is stored in the storage part. To 422. That is, when the extension work unit 200 is deployed, the extension leveler 230 is guided to an appropriate state without adjustment by the operator. In addition, since the guide portion 424 has an inclined surface that is inclined with respect to the surface orthogonal to the D1 direction, the locking portion 410 is guided to the storage portion 422 by the force with which the locking portion 410 is urged by the guide portion 424. Is done. Further, since the guide portion 424 extends along the rotation direction of the extension leveler 230, even when the extension leveler 230 is rotated with respect to the leveler 130 when the extension operation unit 200 is deployed, the guide unit 424 is not affected. It can suppress that the stop part 410 and the receiving part 420 latch in the state which shifted | deviated. Therefore, it is possible to provide a working machine that can reduce the burden on the user with few malfunctions.

  Further, in the working state, the receiving portion 420 enters the storage portion 422 more than the thickness of any of the first strut 412, the second strut 414, and the strut connecting portion 416 of the locking portion 410. By providing the amount to be larger, the connection between the leveler 130 and the extension leveler 230 is released even when an external force in the rotational direction is applied to the leveler 130 or the extension leveler 230. This can be suppressed. Therefore, stable operation can be obtained under various usage environments.

  In addition, since the locking portion 410 and the receiving portion 420 are detachably attached to the extension leveler 230 and the leveler 130, when the locking portion 410 and the receiving portion 420 are worn or damaged, they are exchanged for repair. The number of parts to be reduced can be reduced. Therefore, the cost of parts required for repair can be reduced, and the work burden on the operator can be reduced.

  In addition, since the locking portion 410 is pressed in the direction D1 by the elastic member 440, the extension leveler 230 is rotated with respect to the leveler 130 when the extension working portion 200 is deployed. Even when 410 is pressed by the guide portion 424 and slides in the D2 direction, the locking portion 410 can maintain the force that urges the guide portion 424.

[Support structure of locking portion 410]
The support structure of the latching | locking part 410 with respect to the extension leveler 230 is demonstrated in detail using FIG.

  FIG. 10 is a side view showing a support structure that supports the locking portion in the connection structure of the working portion and the extension working portion of the working machine according to the embodiment of the present invention. A first pedestal 452 and a second pedestal 454 are fixed to the extension leveler 230. The first pedestal 452 and the second pedestal 454 are fixed to the extension leveler 230 by welding. A first contact portion 456 is detachably attached to the first base 452. The first contact portion 456 is attached to the first pedestal 452 by a fixing tool such as a screw, for example. A second contact portion 458 is detachably attached to the second pedestal 454. The second contact portion 458 is attached to the second pedestal 454 by a fixture such as a screw, for example.

  A first opening 462 is provided in the first pedestal 452. A second opening 464 is provided in the second pedestal 454. The first contact portion 456 is provided with a third opening 466 having a smaller diameter than the first opening 462. The second contact portion 458 is provided with a fourth opening portion 468 having a smaller diameter than the second opening portion 464.

  The diameter of the first opening 462 is larger than the diameter of one end side of the locking portion 410 where the column connection portion 416 is provided, the diameter of the first column 412, and the diameter of the second column 414. The size is such that the first support column 412 and the second support column 414 can pass through. The diameter of the second opening 464 is larger than the diameter of the stopper 418 provided on the outer periphery of the first support column 412 and the second support column 414, and the support connection part 416, the first support column 412, the second support column 414, and the elastic member 440. , And a size through which the stopper 418 can pass. The diameter of the third opening 466 is smaller than the diameter of the stopper 418, and the stopper 418 is locked to restrict the movement of the locking portion 410 in the D1 direction. The diameter of the fourth opening 468 is smaller than the diameter of the elastic member 440, and the elastic member 440 is locked to restrict the movement of the elastic member 440 in the D2 direction.

  When the locking portion 410 slides in the D1 direction or the D2 direction, the locking portion 410 moves while rubbing inside the third opening 466 and the fourth opening 468. That is, the locking portion 410 is in sliding contact with the first contact portion 456 and the second contact portion 458. The stopper 418 contacts the first contact portion 456, and the elastic member 440 contacts the second contact portion 458. That is, since the first opening 462 has a larger diameter than the third opening 466 and the second opening 464 has a larger diameter than the fourth opening 468, the locking portion 410 is moved when the locking portion 410 is slid. 410 does not contact the first pedestal 452 and the second pedestal 454. Further, since the second opening 464 has a diameter larger than that of the elastic member 440, the elastic member 440 does not contact the second pedestal 454.

  Here, in the above description, the magnitude relationship regarding the diameters of the first opening 462, the second opening 464, the third opening 466, the fourth opening 468, the stopper 418, and the elastic member 440 has been described. It is not limited to large and small relationships. For example, the diameter of the second opening 464 being larger than the diameter of the stopper 418 is only one aspect for allowing the stopper 418 to pass through the second opening 464. That is, the shape of the second opening 464 may be any shape that allows the stopper 418 to pass through without being limited to the size relationship between the diameters of the second opening 464 and the stopper 418. In addition, the fact that the diameter of the fourth opening 468 is smaller than the diameter of the elastic member 440 is only one aspect for enabling the fourth opening 468 to lock the elastic member 440. That is, the shape of the fourth opening 468 is not limited to the size relationship between the fourth opening 468 and the elastic member 440, and may be any shape that can lock the elastic member 440.

  As described above, when the locking portion 410 slides, the locking portion 410 comes into contact with the detachable first contact portion 456 and the second contact portion 458, and the first pedestal 452 and the second pedestal 454 are the same. Do not touch. Therefore, when the locking portion 410, the first contact portion 456, and the second contact portion 458 are worn due to the friction of the sliding of the locking portion 410, only these components can be replaced and repaired. Therefore, the number of parts required for repair can be reduced, and the burden of repair replacement work can be further reduced.

[Attaching Method of Locking Section 410]
A method for attaching the locking portion 410 to the extension leveler 230 will be described in detail with reference to FIGS. 11 to 14. 11 to 14 are side views showing a method for attaching the support structure for the locking portion of the working machine according to the embodiment of the present invention.

  First, as shown in FIG. 11, the locking portion 410 is attached in a state where the first contact portion 456 is attached to the first base 452 and the second contact portion 458 is removed. The locking portion 410 passes through the second opening 464 of the second pedestal 454 from the first end portion 414-1 side and enters the D2 direction. After the locking portion 410 has sufficiently entered the second opening 464 from the first end portion 414-1 side, the locking portion 410 has the second end portion 414-2 side from the second end portion 414-2 side, as shown in FIG. It passes through the three openings 466 and the first opening 462 and enters the D1 direction. The locking portion 410 that has passed through the third opening portion 466 and the first opening portion 462 and entered the D1 direction is restricted from moving in the D1 direction by the stopper 418 coming into contact with the first contact portion 456. Next, as shown in FIG. 13, the elastic member 440 is attached to the locking portion 410 from the first end portion 414-1 side. The elastic member 440 passes through the second opening 464 and is locked by the stopper 418.

  And as shown in FIG. 14, the 2nd contact part 458 is attached from the 1st edge part 414-1 side. Here, since the diameter of the fourth opening 468 is smaller than the diameter of the elastic member 440, the second contact portion 458 is attached to the second base 454 while compressing the elastic member 440. On the other hand, the diameter of the fourth opening 468 is larger than the diameter of the locking portion 410 on the first end 414-1 side (the first support column 412 and the second support column 414). The part 414-1 side passes through the fourth opening 468.

  As described above, the support structure of the locking portion 410 shown in FIG. 10 is realized by attaching the second contact portion 458 to the second base 454.

<Modification of Embodiment 1>
A modification of the work machine 10 described in the first embodiment will be described. In the following modifications, the shape of the locking portion 410 is mainly different from that of the first embodiment.

  FIG. 15 is a top view showing the structure of the locking portion of the work machine according to the modification of the embodiment of the present invention. The shape of the locking portion 410A shown in FIG. 15 is similar to the shape of the locking portion 410 shown in FIG. However, the locking portion 410A is different from the locking portion 410 in the shape of the column connecting portion 416A that connects the first column 412A and the second column 414A. More specifically, the column connecting portion 416A shown in FIG. 15 connects the first column 412A and the second column 414A while being curved.

  According to the locking portion 410A, the locking portion 410A contacts the guide portion 424 with a substantially constant area regardless of the rotation angle of the extension leveler 230 with respect to the leveler 130 when the extension working portion 200 is deployed. Therefore, a stable operation can be obtained regardless of the rotation angle of the extension leveler 230 with respect to the leveler 130.

  FIG. 16 is a top view showing the structure of the locking portion of the working machine according to the modification of the embodiment of the present invention. The shape of the locking portion 410B shown in FIG. 16 is similar to the shape of the locking portion 410 shown in FIG. However, the latching portion 410B is configured such that the column connecting portion 416B is realized by connecting the first bent portion 4122B where the first column 412B is bent and the second bent portion 4142B where the second column 414B is bent to each other. Is different from the locking portion 410. The first bent portion 4122B and the second bent portion 4142B may be fixed at the contact portion by a method such as welding.

  According to the latching | locking part 410B, the intensity | strength (strength with respect to the force applied to the sliding direction of the latching | locking part 410B) of the support | pillar connection part 416B used as a contact part with the guide part 424 improves. Further, for example, the first support 412B and the second support 414B are attached to the support structure in a state where the first bent part 4122B and the second bent part 4142B are not welded, and after both are attached, the first bent part 4122B and the second bent part 4122B are attached. The locking portion 410B can be formed by welding the bent portion 4142B, and can cope with various environments and device configurations.

  FIG. 17 is a top view showing the structure of the locking portion of the working machine according to the modification of the embodiment of the present invention. FIG. 18 is a side view showing the structure of the locking portion of the working machine according to the modification of the embodiment of the present invention. The shape of the locking portion 410C shown in FIGS. 17 and 18 is similar to the shape of the locking portion 410 shown in FIG. However, the engaging portion 410C has a linear first support column 412C, a linear second support column 414C, and a plate-shaped support column connecting unit 416C that connects the first support column 412C and the second support column 414C. This is different from the stop portion 410. The first support column 412C, the second support column 414C, and the support column connecting portion 416C may be fixed to each contact portion by a method such as welding. As shown in FIG. 18, the column connecting portion 416C is thinner than the first column 412C and the second column 414C.

  According to the locking part 410C, the contact area between the guide part 424 and the column connecting part 416C can be reduced, and the frictional force and the friction noise when the column connecting part 416C slides on the guide part 424 can be reduced. In addition, the strength of the column connecting portion 416C serving as the contact portion with the guide portion 424 (the strength against the force applied to the locking portion 410C in the sliding direction) is improved. Further, for example, the first support column 412C, the second support column 414C, and the support column connecting portion 416C are not welded, and the first support column 412C and the second support column 414C are attached to the support structure. And the latching | locking part 410C can also be formed by welding the support | pillar connection part 416C to the 2nd support | pillar 414C, and can respond to various environments and apparatus configurations.

  As described above, according to the modification of the first embodiment, it is possible to provide a work machine that can reduce the burden on the user with few malfunctions as in the first embodiment. Further, the strength against the force applied in the sliding direction of the locking portion is improved. It is also possible to deal with various environments and device configurations.

<Embodiment 2>
In the second embodiment, a receiving part 420D having a structure different from that of the receiving part 420 in the first embodiment will be described. FIG. 19 is a top view showing the structure of the receiving part of the working machine according to the embodiment of the present invention. FIG. 20 is a first side view showing the structure of the receiving part of the working machine according to the embodiment of the present invention. FIG. 21 is a second side view showing the structure of the receiving part of the working machine according to the embodiment of the present invention. The first side view of FIG. 20 is a side view seen from the direction D3 in FIG. The second side view of FIG. 21 is a side view seen from the direction D4 in FIG. In the description of the receiving part 420D, the same part or a part having the same function as that of the receiving part 420 is given the same reference sign or a similar reference sign (a reference numeral simply appended with an alphabet after a number), and repeated description thereof is as follows. Omitted.

  The receiving portion 420D is different from the receiving portion 420 of the first embodiment mainly in the shape of the upper guide portion 4242D and the shapes of the lower restriction plate 4224D and the restriction plate support portion 4226D. In the following description, the shapes of the upper guide portion 4242D, the lower restriction plate 4224D, and the restriction plate support portion 4226D will be described in detail.

  The upper guide portion 4242D has a contact portion 4240D and a locking portion stopper 4248D. As shown in FIG. 19, the abutting portion 4240D is provided in a region facing the lower guide portion 4244D, and extends in a direction orthogonal to the D4 direction. The locking portion stopper 4248D is bent at the bent portion 4246D and inclined in the direction D4. As shown in FIG. 20, the contact part 4240D extends in a direction orthogonal to the D1 direction. That is, the contact portion 4240D includes a surface orthogonal to the D1 direction. The locking portion stopper 4248D is inclined toward the locking portion 410D with respect to the surface orthogonal to the D1 direction. As shown in FIG. 21, the contact portion 4240D extends in the D5 direction. The locking portion stopper 4248D extends in the D6 direction. The D6 direction is a direction intersecting the D5 direction. In FIG. 21, the D6 direction is orthogonal to the D5 direction in the vicinity of the connecting portion between the contact portion 4240D and the locking portion stopper 4248D.

  Although details will be described later, when the extension leveler 230D rotates upward until the locking portion 410D gets over the locking portion stopper 4248D, the locking portion stopper 4248D is locked by the locking portion stopper 4248D. The first support column 412D or the second support column 414D can be locked. The lower restriction plate 4224D is integrally formed with the restriction plate support portion 4226D and the lower guide portion 4244D.

  FIG. 22 shows the connection structure of the working part and the extension working part of the working machine according to one embodiment of the present invention, in which the second leveling member is above the first leveling member in a state where the locking part is not connected to the receiving part. FIG. In FIG. 22, the extension leveler 230D and the locking portion 410D are indicated by a two-dot chain line. The state shown in FIG. 22 is a state in which the extension leveler 230D is deployed in a state where the locking portion 410D and the receiving portion 420D are displaced, and the extension leveler 230D is rotated upward from that state.

  The locking portion 410D is pressed in the direction of the receiving portion 420D by an elastic member (the elastic member 440 in FIG. 10). Therefore, in the state shown in FIG. 22, the locking portion 410D slides on the surface of the contact portion 4240D while pressing the contact portion 4240D. Here, the locking portion stopper 4248D is bent toward the locking portion 410D at the bent portion 4246D. Therefore, when the locking portion 410D is locked by the locking portion stopper 4248D at the bent portion 4246D, the upward rotation of the extension leveler 230D is restricted.

  FIG. 23 is a side view showing a state in which the locking portion is locked by the locking portion stopper in the connecting structure of the working portion and the extension working portion of the working machine according to the embodiment of the present invention. In FIG. 23, the extension leveler 230D and the locking portion 410D are indicated by a two-dot chain line. The state shown in FIG. 23 is a state in which the extension leveler 230D is further rotated upward from the state shown in FIG. 22, and the locking portion 410D gets over the locking portion stopper 4248D.

  After the extension leveler 230D rotates upward by external force until the locking portion 410D gets over the locking portion stopper 4248D, when the external force disappears, the extension leveler 230D tries to rotate downward by its own weight. At this time, the first support column 412D is locked by the locking portion stopper 4248D, whereby the downward rotation of the extension leveler 230D is restricted. In other words, the locking portion stopper 4248D only needs to exist on a circular arc 413D having a radius that is a line segment connecting the rotation shaft 290D and the first support column 412D with the rotation shaft 290D of the extension leveler 230D as the center. In the present embodiment, the example in which the locking portion stopper 4248D locks the first support column 412D is shown, but the locking portion stopper 4248D may be configured to lock the second support column 414D. In that case, the locking portion stopper 4248D only needs to exist on a circular arc 415D having a radius that is a line segment connecting the rotation shaft 290D and the second support column 414D with the rotation shaft 290D as the center.

  As described above, according to the receiving portion 420D according to the second embodiment of the present invention, even when the extension leveler 230D is deployed in a state where the locking portion 410D and the receiving portion 420D are displaced, the extension leveler 230D is It is possible to restrict the upward rotation. Further, even when the extension leveler 230D rotates further upward and the locking portion 410D gets over the locking portion stopper 4248D, the receiving portion 420D (particularly, the upper guide portion 4242D) is connected to the locking portion 410D. It can suppress entering into the space between 1 support | pillar 412D and 2nd support | pillar 414D.

  Note that the present invention is not limited to the above-described embodiment, and can be modified as appropriate without departing from the spirit of the present invention.

10: Working machine, 100: Working part, 110: Shield cover, 120: Apron, 122, 132, 222, 232, 312, 320: Connection part, 130: Leveler, 200: Extension work part, 210: Extension shield cover, 220: Extension apron, 230: Extension leveler, 300: Switching part, 310: Control cylinder, 400: Connection part, 410: Locking part, 412: First support, 413D, 415D: Arc, 414: Second support, 416 440: stopper, 422: storage unit, 424: guide unit, 432, 434, 436: fixture, 440: elastic member, 452: first pedestal, 454: second pedestal, 456: first contact portion, 458: second contact portion, 462: first opening portion, 464: second opening portion, 4 6: 3rd opening part, 468: 4th opening part, 500: Leveler control part, 510: Leveler extension part, 520: Digging board, 600: Rotor part, 610: Working claw, 612: Rotation range, 620: Power Part, 4122B: first bent part, 4142B: second bent part, 4222: upper restricting plate, 4224: lower restricting plate, 4226: restricting plate support part, 4240D: abutting part, 4242: upper guide part, 4244: lower part Guide part, 4246D: Bent part, 4248D: Stopper stopper, 4262, 4264: Fixing hole

Claims (18)

A first working member having a first cover member provided behind the first working rotor for rotating the work claws, and a first leveling member connected to the first cover member so as to be able to rotate and move;
A second cover member provided behind the second work rotor, which is connected to the first working part so as to be switchable between a storage state and a working state and rotates a work claw in the working state; and the second cover member A second working unit having a second leveling member connected to be rotatable and movable;
A first strut and a second strut attached to the second leveling member and extending in a first direction toward the first leveling member in the working state; and a connecting portion for connecting the first strut and the second strut. A locking part;
The first leveling member is attached to the first leveling member so as to be slidable with the locking portion in the rotational movement region of the first leveling member and the second leveling member in the rotational movement direction of the second leveling member with respect to the second cover member. A receiving portion for storing the locking portion in the working state;
A working machine comprising: The receiving part is
A storage portion for storing the locking portion in the working state;
In the rotational movement region of the first leveling member and the second leveling member in the rotational movement direction of the second leveling member with respect to the second cover member, it is slidably provided with the locking portion, and the working state is changed from the housed state. A guide part for guiding the locking part to the storage part during switching to
The working machine according to claim 1, comprising:   The working machine according to claim 2, wherein the guide portion has an inclined surface that is inclined with respect to a surface orthogonal to the first direction.   The working machine according to claim 2 or 3, wherein the guide portion extends along a rotational movement direction of the second leveling member with respect to the second cover member.   In the working state, the receiving portion is larger in the amount of the locking portion entering the storage portion than the thickness of any of the first strut, the second strut, and the connecting portion. The working machine according to claim 2, wherein the working machine is provided as described above.   The working machine according to claim 2, wherein the guide portion is integrally formed with the storage portion.   The work machine according to claim 1, wherein the receiving portion is detachably attached to the first leveling member.   The work machine according to any one of claims 1 to 7, further comprising an action portion that acts to press the locking portion in the first direction.   The working machine according to claim 8, wherein the action portion is an elastic member provided on an outer periphery of the first support column and the second support column.   The work machine according to claim 8 or 9, wherein the locking portion and the action portion are detachably attached to the second leveling member. A first pedestal fixed to the second leveling member and provided with a first opening;
A second pedestal fixed to the second leveling member and provided with a second opening;
A first contact portion attached to the first pedestal and provided with a third opening having a smaller diameter than the first opening;
A second contact portion attached to the second pedestal and provided with a fourth opening having a smaller diameter than the second opening;
Further comprising
The locking portion includes a stopper that restricts the operation of the action portion in the first direction, contacts the first contact portion, and restricts the operation of the locking portion in the first direction;
The first opening has a larger diameter than one end side of the locking portion,
The second opening has a larger diameter than the stopper,
The third opening has a smaller diameter than the stopper,
The working machine according to any one of claims 8 to 10, wherein the fourth opening has a smaller diameter than the action portion. The first contact portion is detachably attached to the first pedestal,
The work machine according to claim 11, wherein the second contact portion is detachably attached to the second pedestal. The guide portion is
A contact portion including a surface orthogonal to the first direction;
The working machine according to claim 2, further comprising: a locking portion stopper including an inclined surface that is connected to the contact portion and is inclined with respect to a surface orthogonal to the first direction. The contact portion extends along a rotational movement direction of the second leveling member with respect to the second cover member,
The working machine according to claim 13, wherein the locking portion stopper extends in a direction orthogonal to a direction in which the contact portion extends. The locking portion has the first support column and the second support column,
The locking portion stopper is centered on the rotation axis of the second leveling member and is on a circular arc having a radius connecting a line segment connecting the rotation axis and the first column, or the rotation axis and the second column. The working machine according to claim 13, wherein the working machine is arranged on an arc of a circle whose radius is a line segment connecting the two. A first working member having a first cover member provided behind the first working rotor for rotating the work claws, and a first leveling member connected to the first cover member so as to be able to rotate and move;
A second cover member provided behind the second work rotor, which is connected to the first working part so as to be switchable between a storage state and a working state and rotates a work claw in the working state; and the second cover member A second working unit having a second leveling member connected to be rotatable and movable;
A latch that is attached to the first leveling member and includes a first column and a second column that extend in a direction toward the second leveling member in the working state, and a connecting portion that connects the first column and the second column. And
The second leveling member is attached to the second leveling member, and is provided to be slidable with the locking portion in the rotational movement region of the second leveling member and the first leveling member in the rotational movement direction of the first leveling member with respect to the first cover member. A receiving portion for storing the locking portion in the working state;
A working machine comprising: A first working member having a first cover member provided behind the first working rotor for rotating the work claws, and a first leveling member connected to the first cover member so as to be able to rotate and move;
A second cover member provided behind the second work rotor, which is connected to the first working part so as to be switchable between a storage state and a working state and rotates a work claw in the working state; and the second cover member A second working unit having a second leveling member connected to be rotatable and movable;
A latch that is attached to the second leveling member and includes a first column and a second column that extend in a direction toward the first leveling member in the working state, and a connecting portion that connects the first column and the second column. And
A guide portion attached to the first leveling member and having a length along the rotational movement direction of the first leveling member and the second leveling member in the rotational movement direction of the second leveling member with respect to the second cover member; A receiving portion including a storage portion for storing the locking portion in the working state;
A working machine comprising: A first working member having a first cover member provided behind the first working rotor for rotating the work claws, and a first leveling member connected to the first cover member so as to be able to rotate and move;
A second cover member provided behind the second work rotor, which is connected to the first working part so as to be switchable between a storage state and a working state and rotates a work claw in the working state; and the second cover member A second working unit having a second leveling member connected to be rotatable and movable;
A latch that is attached to the first leveling member and includes a first column and a second column that extend in a direction toward the second leveling member in the working state, and a connecting portion that connects the first column and the second column. And
A guide portion attached to the second leveling member and having a length along the rotational movement direction of the second leveling member and the first leveling member in the rotational movement direction of the first leveling member with respect to the first cover member; A receiving portion including a storage portion for storing the locking portion in the working state;
A working machine comprising:

Images