JP5843574B2 - Depth display device for shaving machines - Google Patents

Description

  The present invention is a substitute working machine provided with a first leveling plate for leveling the cultivated soil cultivated by the cultivating rotor and a second leveling plate provided at the rear part thereof so as to be rotatable in the vertical direction and leveling the surface of the cultivated soil. The present invention relates to a plowing depth display device.

  Such a shaving machine having a second leveling plate at the rear part of the first leveling plate is connected to the rear part of the traveling machine body that can generally travel so as to be movable up and down via a three-point link coupling mechanism. Do the scribing work as it travels forward. The lifting operation of the substitute working machine is performed by an operator on the traveling machine body by an operation switch (lever) provided on the traveling machine body.

  When performing shaving work with this shaving machine, if there is unevenness on the farming paddle in the field, the shaving work machine also moves up and down as the traveling machine moves up and down, and the cultivated soil cultivated by the tilling rotor The plowing depth changes. This change in tilling depth adversely affects the growth of rice.

  Therefore, the plowing depth can be made constant by the operator who has boarded the traveling machine body adjusting the vertical position of the substitute work machine by operating the operation switch in accordance with the unevenness of the tiller during the substitute work. However, since the shaving operation is an operation performed by putting water into the field, there is a possibility that the actual plowing depth may be mistaken for some amount of water to make the plowing depth constant.

  In view of this, there has been proposed a shaving work machine in which a plowing depth check gauge serving as a plowing depth guide is provided at the front end of a rotor cover that covers the upper portion of a plowing rotor (in the literature, a rotary working body) (see Patent Document 1). This plowing depth check gauge has a shape in which the front side in the traveling direction is retracted backward as it goes from the top to the bottom. The tilling depth of the tilling rotor can be confirmed by the amount by which the gauge surface projecting downward from the end of the rotor cover during the shaving operation is immersed in the non-scoring soil surface.

JP 2007-330181 A

  This conventional plowing depth check gauge is for an operator who has boarded a traveling machine body to visually recognize the amount that the gauge surface is immersed in the non-generation shaved soil surface. For this reason, there is a possibility that the operator mistakes the amount of immersion of the gauge surface into the non-scratched soil surface depending on the amount of water put in the field. If the amount of immersion of the gauge surface is misunderstood, the position adjustment of the tilling rotor by the operator is also erroneously adjusted, and the tilling depth cannot be made constant.

  In addition, since this gauge is arranged near the water surface of the farm field, an operator on the traveling machine body looks back at an angle toward the traveling machine body when looking at this gauge. Due to the action of moving downward, there is a possibility that the straightness of the traveling machine body cannot be maintained.

  The present invention has been made in view of such a problem, and during plowing work, the position of the tilling rotor can be accurately adjusted so that the tilling depth can be made constant. It is an object of the present invention to provide a tilling depth display device for a shaving work machine capable of maintaining the straightness of the machine.

  In order to solve such a problem, the tilling depth display device of the substitute working machine according to the present invention is mounted on the traveling machine body and is disposed so as to be rotatable in the vertical direction behind the tilling rotor that is rotatably supported by the machine body. A first leveling plate for leveling the cultivated soil that has been cultivated by the tilling rotor, and a second leveling plate that is disposed at the rear of the first leveling plate so as to be rotatable in the vertical direction and level the cultivated soil surface. It is a tilling depth display device of a shaving work machine provided with one end side being pivotally connected to the machine body and the other end side being pivotally connected to a second leveling board, to the tilling depth of the tilled soil cultivated by the tilling rotor A link mechanism that rotates in the vertical direction as the second leveling plate rotates relative to the first leveling plate, and a plowing depth display unit that displays the plowing depth according to the rotation of the link mechanism. The plowing depth display section is located diagonally behind an operator working on the traveling machine. Characterized in that provided on the acting skill of sight extension destination when back (claim 1).

  Further, the plowing depth display unit of the present invention displays the plowing depth display by movement in the body width direction (claim 2).

  In addition, the link mechanism of the present invention includes a swinging arm that has one end pivotably provided on the airframe and the other end extending rearward in the advancing direction of the airframe, and can swing vertically. A display rod having a connecting rod connected between the end portion and the upper surface of the second leveling plate, and the plowing depth display portion being provided on the machine body and displaying symbols indicating a plurality of different degrees of plowing depth And a pointer arm that is movable along a plurality of symbols displayed on the display unit according to the rotation of the swing arm, one end side of which is rotatably connected to the swing arm and the other end side is a pointer A connecting wire is provided which is connected to the arm and moves the pointer arm in accordance with the swing of the swing arm (Claim 3).

  The connecting wire of the present invention is always urged in the extending direction by urging means (the tension spring 66 and the torsion coil spring 67 in the embodiment).

  Further, the pointer arm of the present invention has an intermediate portion in the extending direction rotatably attached to the display portion, and is rotatable along the display portion with the intermediate portion serving as a fulcrum. One end side is connected to the connecting wire, and the other end side of the pointer arm is movable along a plurality of symbols displayed on the display section.

  In the present invention, the intermediate portion of the pointer arm is provided at a position where the distance between the other end side of the pointer arm and the intermediate portion is larger than the distance between the one end side of the pointer arm and the intermediate portion. (Claim 6).

  According to the tilling depth display device for a tiller working machine according to the present invention, having the above-mentioned features, the tilling work can be accurately adjusted by adjusting the position of the tilling rotor at the time of shaving work. It is possible to provide a plow working machine plowing depth display device capable of maintaining the straightness of the traveling machine body when checking the depth.

The structure figure of the side surface side of the shaving work machine with which the working depth display apparatus concerning one embodiment of this invention is mounted is shown. The structure figure by the side of the plane of the shaving work machine in which the working depth display apparatus of this invention was mounted is shown. The structure figure of the front side of the shaving work machine by which the tilling depth display apparatus of this invention is mounted is shown. The front view of the tilling depth display device of the present invention is shown. The figure (a) shows the structure figure of the side of the shaving work machine for demonstrating the action | operation of the working depth display apparatus when the working depth is comparatively shallow, The figure (b) shows the working depth at this time The display state of a display apparatus is shown. The figure (a) shows the structure figure of the side of the shaving work machine for demonstrating the action | operation of the working depth display apparatus when the working depth is comparatively deep, and the figure (b) shows the working depth at this time The display state of a display apparatus is shown. The figure (a) shows the structure figure of the side of the shaving work machine for explaining the operation of the working depth display device when the second leveling board is in the earthing position, and the figure (b) The display state of a working depth display device is shown. The front view of the tilling depth display device concerning other embodiments of the present invention is shown. The top view of the working depth display apparatus concerning other embodiment of this invention is shown.

  Hereinafter, a preferred embodiment of the present invention will be described with reference to FIGS. The present embodiment will be described by taking as an example a proxy-working machine capable of folding and unfolding left and right work bodies on both sides of the work-machine main body. First, before explaining the tilling depth display device according to the present invention, a substitute working machine will be described with reference to FIG. 1 (side-side structure diagram) and FIG. 2 (planar-side structure diagram).

  As shown in FIG. 1 and FIG. 2, the substitute working machine 1 is attached to the rear part of the traveling machine body 90 and advances along with the forward traveling of the traveling machine body 90 to perform the substitute work. A work machine body 2 disposed at the center of the direction, and a left work body 20L and a right work body 20R that are pivotably attached to the left and right ends of the work machine body 2 and the left work body. 20L and the right working body 20R form 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, and a three-point link coupling mechanism (not shown) provided at the rear part of the travel machine body 90 is connected to the rear part of the travel machine body 90. 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. The tilling rotor 13 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. The power is transmitted to the tilling rotor 13, the left working body 20L, and the right working body 20R of the main body 2, and the tilling rotor 13, the left working body 20L, and the right working body 20R of the working machine body 2 are provided to the tilling rotor. The rotor is configured to rotate in a predetermined direction.

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

  The left and right ends of the work implement body 2 are provided with shaft portions 14 extending in the front-rear direction at positions above the shield cover 10, and the left work body 20 </ b> L and the right work body 20 </ b> R rotate up and down around the shaft portion 14. It is provided freely. The left work body 20L and the right work body 20R move between a storage position where the worker folds the work machine body 2 above and a deployment position Pt which is developed to the side of the work machine body 2.

  The left working body 20L and the right working body 20R have a bilaterally symmetric structure. If the left working body 20L is described, side frames 22L and 23L are arranged on both the left and right sides, and lower portions of these side frames 22L and 23L. A tilling rotor is rotatably supported between them, and a shield cover left 24L is provided between the upper portions of the side frames 22L and 23L to cover the upper portion of the tilling rotor. A first leveling plate left 26L is attached to the rear end of the shield cover left 24L 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.

  The first leveling plate left 26L and the second leveling plate left 28L are joined to the first leveling plate 11 and the second leveling plate 12 of the work machine body 2 when the left working body 20L is deployed, and the first leveling plate left 26L and the second leveling plate left 28L are connected via connection members 30 and 31, and when the left working body 20L is folded, the connection of the connection members 30 and 31 is released and the first leveling plate left 26L and The second leveling plate left 28 </ b> L is separated from the outer end portion of the work machine main body 2, so that the joining with the first leveling plate 11 and the second leveling plate 12 is released.

  Next, the tilling depth display device 40 provided in the substitute working machine 1 will be described with reference to FIGS. As shown in FIGS. 1 and 2, the tilling depth display device 40 includes a link mechanism unit 41 that is movable in the vertical direction as the second leveling plate 12 provided in the work implement body 2 rotates in the vertical direction. The plowing depth display unit 50 displays the plowing depth in accordance with the movement of the link mechanism unit 41.

  The link mechanism 41 is a swinging arm whose front end is pivotally connected to a support plate 7 disposed at the rear of the gear box 6 and whose rear side extends rearward in the aircraft traveling direction and can swing in the vertical direction. 42 and a connecting rod 44 connected between the rear end portion of the swing arm 42 and the upper surface of the second leveling plate 12. That is, the swing arm 42 is connected to the second leveling plate 12 via the connecting rod 44. The front end portion of the swing arm 42 is rotatably connected to the rear portion of the support plate 7 with a shaft portion 43 extending in the lateral direction as a rotation fulcrum. Both upper and lower ends of the connecting rod 44 are connected to the swing arm 42 and the second leveling plate 12 so as to be rotatable. For this reason, when the second leveling plate 12 rotates in the vertical direction, the swing arm 42 rotates in the vertical direction via the connecting rod 44 with the shaft portion 43 as the rotation fulcrum.

  As shown in FIG. 3, a pedestal 16 is provided at the right front of the shield cover 10 of the work machine body 2. The pedestal portion 16 is formed by bending a sheet metal to form a flat portion 16a at the top. The plane portion 16a is disposed at a position above the input shaft 6a. A tilling depth display unit 50 is attached on the flat surface portion 16 a of the pedestal portion 16.

  As shown in FIG. 4, the plowing depth display unit 50 includes a display unit 51 that displays a plurality of different degrees of plowing depth and letters and characters that are displayed at predetermined intervals, and is rotatable on the display unit 51. A pointer arm 53 that is supported and is movable along a plurality of characters or the like displayed on the display unit 51 according to the rotation of the swing arm 42.

  The display unit 51 is a plate-like member formed in a rectangular shape when viewed from the front. The display unit 51 extends in the left-right direction of the work machine body 2 and is disposed in a state where the front surface 51a of the display unit 51 faces the traveling machine body. (See FIG. 2). The upper edge 51b of the display unit 51 is curved upward and convex. The upper edge 51b is formed in an arc shape along a locus drawn by a predetermined radius R around a shaft portion 55 that rotatably supports a later-described pointer arm 53.

  On the upper part of the front surface 51 a of the display unit 51, letters and a plurality of numbers are written along the upper edge 51 b of the display unit 51 from one side to the other side in the display unit width direction. In the present embodiment, the character “Doughing” is written on the left side of the front surface 51a of the display unit 51, the number “1” is written on the right side of this character, and the position on the right side of the number “1”. The numbers “2”, “3”, and “4” are described with a predetermined interval.

  The character “earthing” is a character indicating that the second leveling board 12 is in a posture capable of earthing (see FIG. 7). The numbers “1”, “2”, “3”, and “4” are characters indicating the degree of tilling depth, and the larger the number, the deeper the tilling depth. In addition, what represents the degree of cultivation depth is not restricted to a number, A symbol, a figure, and a character may be sufficient.

  Further, as shown in FIGS. 2 and 3, the display unit 51 is located on the right side in the left-right direction of the work machine body 2, and the worker M who has boarded the traveling machine body 90 obliquely rearward toward the substitute work machine 1. It is arranged at the extension of the line of sight of the worker M when looking back. For this reason, the worker M can visually recognize the display unit 51 only by turning his / her head diagonally backward toward the substitute working machine 1 without slightly twisting or twisting the body toward the substitute working machine.

  As shown in FIGS. 1 and 4, a wire support portion 57 that extends in the left-right direction of the work machine body 2 and is formed in an inverted U shape in a side view is integrally provided at the lower portion of the display portion 51. Yes. The lower end portion of the wire support portion 57 is fixed to the pedestal portion 16, and the display portion 51 is attached to the pedestal portion 16 via the wire support portion 57. The wire support portion 57 has a pair of side plate portions 58 and 58 ′ arranged at a predetermined interval in the front-rear direction. The side plate portions 58, 58 ′ are provided with a pair of guide holes 59 that extend from one end in the circumferential direction to the other end to guide the movement of the connecting wire 61 described later. A pin 65 is inserted between the guide holes 59 and moves along the guide holes 59. One end side of a connecting wire 61 described later is locked to the pin 65. Details of the connecting wire 61 will be described later.

  The pointer arm 53 extends upward along the rear surface 51 c of the display unit 51, bends to the front side of the display unit 51 beyond the upper edge 51 b of the display unit 51, and bends downward beyond the front surface 51 a of the display unit 51. And extend along the front surface 51a. A pointer 53 a formed in the shape of an arrow pointing to a numeral or the like written on the display unit 51 is provided at the tip of the pointer arm 55 extending along the front surface 51 a of the display unit 51.

  The pointer arm 53 is pivotally attached to a shaft portion 55 provided on the rear surface 51 c of the display unit 51 at an intermediate portion in the extending direction, and is rotatable along the front surface 51 a of the display unit 51. The shaft portion 55 is provided at the center in the width direction on the lower side of the display portion 51 and protrudes to the rear side of the display portion 51, and serves as a pivotal fulcrum of the pointer arm 55 as described above.

  The pivot fulcrum side of the pointer arm 53 is formed in a rectangular shape when viewed from the front, and a long hole 53 b extending in the longitudinal direction of the pointer arm 53 is provided at the bottom of the lower side of the pointer arm 53. A pin 65 passed through an end portion of a connecting wire 61 described later is rotatably inserted into the long hole 53b. The long hole 53 b is for rotating the pointer arm 53 while the pin 65 moves along the guide hole 59 in accordance with the movement of the connecting wire 61. For this reason, when the connecting wire 61 moves along the guide hole 59 from one side in the left-right direction, the pointer arm 53 rotates from the other side in the left-right direction of the display unit 51 to one side with the shaft portion 55 as a pivot. To do.

  The connecting wire 61 is configured by inserting a wire 62 into an outer 63 formed in a cylindrical shape with flexibility. For this reason, the connecting wire 61 is flexible and deformable. One end of the connecting wire 61 is connected to the pointer arm 53, the other end is rotatably connected to the upper portion of the swing arm 42, and the connecting wire 61 is bent between the pointer arm 53 and the swing arm 42. (See FIG. 2). Thus, since the connecting wire 61 is flexible and can be deformed, the display unit 51 of the tilling depth display device 50 can be freely arranged on the work implement main body 2, and the arrangement of the display unit 51 can be changed. The degree of freedom can be improved.

  The outer 63 of the connecting wire 61 has bellows-like stretchable parts 63a that can be stretched in the extending direction of the outer 63 at both ends thereof. An outer end 64 that fixes the end of the wire 62 is integrally attached to the inside of the distal end side of the stretchable portion 63a. A connecting terminal 64 a for locking the pin 65 is provided at the tip of the outer end 64. The connection terminal 64a is formed in an annular shape and can be inserted with the pin 65 described above. For this reason, when the connecting wire 61 moves along with the swing of the swing arm 42, the pin 65 moves along the guide hole 59 via the connection terminal 64a to rotate the pointer arm 53.

  The connection terminal 64 a of the connecting wire 61 configured as described above is provided with a tension spring 66 that is hooked between the connection terminal 64 a and the wire support portion 58. The tension spring 66 is provided so that a tension acts on the connecting wire 61 at all times. For this reason, since the connecting wire 61 is always in a tensioned state, the turning motion of the swing arm 42 can be immediately transmitted to the connecting wire 61. Accordingly, the pointer arm 53 can quickly indicate the tilling depth in response to the change in tilling depth during the cutting operation. Further, the distance X between the central axis of the shaft 55 serving as the pivot point of the pointer arm 53 and the tip of the pointer 53 a is the distance between the central axis of the shaft 55 and the central axis of the pin 65 that rotates the pointer arm 53. The pointer arm 53 is configured to be larger than Y. For this reason, compared with the movement amount (stroke) of the connecting wire 61, the width of the numbers and characters indicated by the pointers 53a can be increased, and the size of the display unit 51 on which the numbers and the like are written is designed to be easy to see. can do.

  It is noted that the shaving machine 1 is not shown in the figure, which can regulate the swinging of these leveling plates in a state where the first leveling plate 11 and the second leveling plate 12 are swung downward when performing the earthing work. A locking device is provided. The lock device includes an operation lever that can be operated by an operator, and the rotation of the swing arm 42 is restricted and released by the operation of the operation lever, and the first leveling plate 11 and the second leveling plate 12 are rotated. Restrict movement and deregulation.

  Next, the relationship between the numbers (1 to 4) indicated by the pointer 53a of the tilling depth display device 40 and the tilling depth D of the tilled soil by the tilling rotor 13 will be described with reference to FIGS. As shown in FIG. 5, the plowing depth display device 40 is configured such that, when the plowing depth Da of the cultivated soil by the plowing rotor 13 is shallow, the first leveling plate 11 is at an angle θ (θ = about 60 in the drawing) with respect to the field surface Ha. Tilt with °). As the first leveling plate 11 rotates, the second leveling plate 12 rotates with respect to the first leveling plate 11, and the second leveling plate 12 has an angle α (in the drawing, relative to the first leveling plate 11). α = about 120 °) and contact with the field surface Ha. Further, as the second leveling plate 12 rotates, the swing arm 42 rotates up and down via the connecting rod 44, and the connecting wire 61 moves according to the swing of the swing arm 42, The pointer 53a of the arm 53 indicates the number “2”.

  On the other hand, when the plowing depth Db is relatively deep, as shown in FIG. 6, the first leveling plate 11 rotates more upward than the case of FIG. 5 to the field surface Ha. In contrast, it is inclined with an angle θ ′ smaller than the angle θ (θ ′ = about 18 ° in the drawing). As the first leveling plate 11 rotates, the second leveling plate 12 contacts the field surface Ha with an angle α ′ (α ′ = about 162 ° in the drawing) with respect to the first leveling plate 11. . Further, as the second leveling plate 12 rotates, the swing arm 42 rotates up and down via the connecting rod 44, and the connection wire 61 moves to the left and right of the display unit 51 according to the rotation of the swing arm 42. The pointer 53a of the pointer arm 53 moves to the left in the direction and points to the numeral “4”.

  Thus, in the tilling depth display device 40 of the present invention, the second leveling plate 12 rotates with respect to the first leveling plate 11 according to the depth of the tilling depth D, and the second leveling plate 12 rotates. Accordingly, the swing arm 42 is rotated in the vertical direction, and the connecting wire 61 is moved in accordance with the swing of the swing arm 42 to move the pointer 53a. For this reason, the operator M who has boarded the traveling machine body 90 can know the correct tilling depth by visually confirming the numbers indicated by the pointers 53a of the tilling depth display unit 50 of the tilling depth display device 40. Therefore, when the pointer 53a is shifted to the large number side (number 4 side) during the substitution work, the worker lifts the substitution work machine 1 through the three-point link coupling mechanism so that the working depth is shallow. For the operation. Further, when the pointer 53a is shifted to a smaller number side (one side of the number) during the substitution work, the worker moves the substitution work machine 1 downward through the three-point link coupling mechanism so that the working depth is deep. Perform the operation to unload. Therefore, it is possible to make the tilling depth constant during the shaving operation.

  Further, the plowing depth display unit 50 of the plowing depth display device 40 is visible only by turning the head diagonally backward toward the plowing work machine 1 without the operator M slightly twisting or twisting the body toward the plowing work machine. Since it is arranged at a possible position, it is possible to easily check the tilling depth and to reduce the degree of fluctuation of the handle operation of the operator who has boarded the traveling machine body. For this reason, the straight traveling property of the traveling machine body 90 at the time of checking the tilling depth can be maintained.

  Next, the operation of the tilling depth display device 40 when performing the earthing work with the shaving machine 1 will be described with reference to FIG. When performing the earthing work, the substitute working machine 1 is lifted via the three-point link connecting mechanism of the traveling machine body 90, and the second leveling board 12 is brought into a non-contact state with respect to the field. Then, as shown in FIG. 7, compared to the case of FIG. 5, the first leveling plate 11 is angled larger than the angle θ with respect to the field surface Ha by rotating the swing arm 42 further downward. ”(In the drawing, θ ″ = about 70 °) and tilt. Further, as the first leveling plate 11 rotates, the second leveling plate 12 is tilted with respect to the first leveling plate 11 at an angle α ″ (α ″ = about 180 ° in the drawing). And the rocking | fluctuation arm 42 is made into a locked state by operation of the operating lever of the locking device mentioned above, and the rotation to the front-back direction with respect to the advancing direction of the 2nd leveling board 12 is controlled.

  Here, as the swing arm 42 is rotated downward, the connecting wire 61 moves to the swing arm 42 side. Along with the movement of the connecting wire 61, the pointer arm 53 rotates to the left with the shaft portion 55 as a fulcrum, and the pointer 53a indicates "earthing". When the shaving work machine 1 is in the state of earthing, the shaving work machine 1 is lowered via the three-point link connecting mechanism of the traveling machine body 90. When the traveling machine body 90 is moved forward, the soil in the field can be moved toward the traveling machine body traveling direction side by the first leveling plate 11 and the second leveling plate 12.

  In the above-described embodiment, the tension spring 66 is shown as means for biasing the connecting wire 61, but a torsion coil spring 67 may be used as shown in FIG. The torsion coil spring 67 is provided in a state of being inserted through the shaft portion 55 between the lower side of the pointer arm 53 and the display portion 51, and one arm portion 67 a of the torsion coil spring 67 is connected to the display portion 51. The other arm portion 67 b is connected to the lower side of the pointer arm 53, and the other arm portion 67 b always urges the pointer arm 53 to the right in the left-right direction of the display unit 51. For this reason, the connecting wire 61 connected to the pointer arm 53 can always be pulled by the urging of the torsion coil spring 67.

  Moreover, although the display part 51 of the tilling depth display apparatus 40 of embodiment mentioned above showed what the needle | hook 53a moved with respect to the gauge by which the number etc. were arrange | positioned at circular arc shape, as shown in FIG. The pointer may move with respect to a gauge in which the straight lines are arranged linearly. In this case, the display part 52 with numbers and the like displayed on the side plate part 58 on the traveling machine body side of the wire support part 57 is provided so as to protrude. The display part 52 is formed in a rectangular shape in plan view, and is disposed below the pin 65 ′ extending from the guide hole of the side plate part 58. On the display unit 52, characters “earthing” and numbers “1”, “2”, “3”, “4” are written from the side opposite to the swing arm side, and the pin 65 ′ serves as a pointer.

  When the display unit 52 is configured in this manner, the structure is simplified, the size can be reduced, and the manufacturing cost can be reduced as compared with the display unit 51 described above. If the connecting wire is a push-pull type (push-pull cable), further downsizing can be achieved.

  In addition, as shown in FIG. 7, the tilling depth display device 40 of the above-described embodiment is one that mechanically moves the pointer 53 a according to the tilling depth, but the display unit 51 has a lamp corresponding to the tilling depth. (Not shown) may be provided. In this case, a sensor (for example, a limit switch, an optical sensor, or the like) that detects the position of the end of the connecting wire 61 on the display unit side and the position of the end of the connecting wire 61 correspond to the wire support 57. A lamp for displaying the tilling depth is provided, and the lamp corresponding to the tilling depth corresponding to the position of the connecting wire 61 detected by the sensor is turned on.

  As described above, the display unit 71 of the tilling depth display device 70 is configured to include a plurality of lamps, so that it is visually recognized when the outdoor weather is irregular as compared with the case where the pointer 53a is mechanically moved. Can be improved.

  Further, as shown in FIG. 2, the substitute working machine 1 of the above-described embodiment manually rotates the left working body 20 </ b> L and the right working body 20 </ b> R with respect to the working machine body 2. You may make it rotate a body electrically. In this case, an electric hydraulic cylinder is provided between the work implement body 2 and the left work body 20L and the right work body 20R, and the cylinders are extended and contracted to extend the left work body 20L and the work implement body 2. The right working body 20R is rotated. The expansion / contraction control of the electric hydraulic cylinder is performed by a controller provided near the driver's seat of the traveling machine body 90 on which the operator is boarded.

  In the above-described embodiment, the left working body 20L and the right working body 20R are exemplified as the substitute working machine 1 having a structure in which the left working body 20L and the right working body 20R can be folded with respect to the working machine main body 2. The lost work machine may be used.

1st Oyster Work Machine 5 Airframe 10 Shield Cover (Cover)
DESCRIPTION OF SYMBOLS 11 1st leveling board 12 2nd leveling board 13 Tilling rotor 40 Plowing depth display apparatus 41 Link mechanism part 42 Swing arm 44 Connecting rod 50 Plowing depth display part 51 Display part 53 Pointer arm 61 Connecting wire 66 Tension spring (biasing means) )
67 Torsion coil spring (biasing means)
90 traveling aircraft

Claims (6)

A first leveling plate that is mounted on the traveling machine body and is rotatably arranged in the vertical direction behind a tilling rotor that is rotatably supported by the machine body to level the cultivated soil cultivated by the tilling rotor; A plowing depth display device for a shaving machine comprising a second leveling plate disposed on the rear portion of the leveling plate so as to be rotatable in the vertical direction and leveling the cultivated soil surface,
One end side is pivotally connected to the machine body, the other end side is pivotally connected to the second leveling plate, and the first leveling plate is set to the first leveling plate according to the tilling depth of the cultivated soil cultivated by the tilling rotor. 2 a link mechanism that rotates in the vertical direction as the leveling plate rotates,
A plowing depth display unit that displays a plowing depth according to the rotation of the link mechanism unit;
The plowing work is characterized in that the plowing work is provided at an extension of the line of sight of the worker when the worker who has boarded the traveling body turns back obliquely toward the substitute working machine. Plowing depth display device. The plowing depth display device according to claim 1, wherein the plowing depth display unit performs plowing depth display by movement in a machine body width direction. The link mechanism has a swing arm that has one end pivotably provided on the airframe and the other end extending rearward in the advancing direction of the airframe and capable of swinging up and down, and the other end of the swing arm. A connecting rod connected between the upper surface of the second leveling plate,
The plowing depth display unit includes a display unit that is provided on the machine body and displays a symbol indicating a plurality of different degrees of plowing depth, and a plurality of display units that are displayed on the display unit according to the rotation of the swing arm. A pointer arm movable along the symbol,
One end side is pivotally connected to the swing arm, the other end side is connected to the pointer arm, and a connecting wire is provided for moving the pointer arm according to the swing of the swing arm. A tilling depth display device for a scribing work machine according to claim 2. The tilling depth display device for a plow working machine according to claim 3, wherein the connecting wire is urged by an urging means so that tension is always applied to the linking wire . The pointer arm is pivotably attached to the display unit at an intermediate part in the extending direction, and is rotatable along the display part with the intermediate part as a fulcrum.
The one end side of the pointer arm with respect to the intermediate portion is connected to the connecting wire, and the other end side of the pointer arm is movable along a plurality of symbols displayed on the display portion. 4. A plowing depth display device for a shaving work machine according to 4. The intermediate portion of the pointer arm is provided at a position where a distance between the other end side of the pointer arm and the intermediate portion is larger than a distance between one end side of the pointer arm and the intermediate portion. The tilling depth display device for a shaving work machine according to claim 5.

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