JP2017147953A - Agricultural work machine and remote control - Google Patents

Abstract

PROBLEM TO BE SOLVED: To prevent an automatic device from lifting and lowering a puddling machine in a scene in which it is not necessary to lift or lower a puddling machine.SOLUTION: An agricultural work machine includes a machine body for rotatably supporting a rotary working part for performing tilling work, a cover part provided to the machine body for covering the upper part of the rotary working part, an apron supported at the rear end part of the cover part, a support member attached to the back face of the apron, and an apron rotation control part attached to the cover part that switches the state between an apron pressure applied state and an apron pressure release state. The apron rotation control part includes a rod part whose rear end part is slidably attached to the support member, a first spring part mounted on the rod part, an arm part rotatably supports a front end part of the rod part, which is rotatably supported relative to the cover part, a cam bracket rotatably supported by a cam bracket rotation shaft, which has a contact part, and a drive part for rotating the cam bracket.SELECTED DRAWING: Figure 1

Description

  The present invention relates to an agricultural machine and a remote control. In particular, the present invention relates to an apron circuit that can be switched between an apron pressurizing state in which the apron cannot freely rotate and pressurizing the apron and a free state in which the apron can freely rotate (apron pressure release state). The present invention relates to an agricultural machine including a dynamic control unit.

  Agricultural working machine comprising an apron (first leveling board) for leveling the cultivated soil cultivated by the tilling rotor and a leveler (second leveling board) provided on the rear part of the apron so as to be rotatable in the vertical direction and leveling the surface of the cultivated soil For example, a shaving machine is generally connected to a rear part of a travelable vehicle body so as to be able to move up and down via a three-point link mechanism, and a shaving work is performed while proceeding with forward travel of the travel aircraft 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, for example, an automatic device (plowing depth automatic) that controls raising and lowering based on the detection result of the depth sensor so that a farming machine such as a paddle work machine connected to a traveling machine body such as a tractor has a set plowing depth. It is known to provide a control device on a traveling machine body. Since this depth sensor detects the plowing depth of the substitute working machine based on the detection of the rotation angle of the apron, in order to use this automatic device, the apron needs to be free during the substitute operation. As such a writing machine, there is a writing machine of Patent Document 1.

  The conventional shaving work machine of Patent Document 1 is a machine body that rotatably supports a rotary working part that performs tillage work, a cover part that is provided on the machine body and covers an upper part of the rotary work part, and a rear end part of the cover part. An apron that is movably supported, and a leveler that is pivotally supported at the rear end of the apron, and has a rotation restricting means for restricting the rotation of the apron that has been moved to the earthing work position. The rotation restricting means includes a rod portion whose upper end is rotatably supported by the apron and extending upward, and a restriction position adjusting portion that adjusts a position for restricting the rotation of the apron to the back side. The regulating position adjusting unit is configured to support the tip of the rod part so as to be movable in the front-rear direction, and to be pivotally supported by the body part so as to contact the tip part of the rod part and move the tip part. The arm part and the arm part provided on the main body part are rotated. The position of the tip part of the rod part is reduced by the apron when the arm part is rotated, the position of reducing the amount of cultivated soil by the apron, the position of increasing the amount of cultivated soil, and the shaving work When it is performed, the apron can be moved to a position where the rotation of the apron is free, and the leveler performs the leveling work of the cultivated soil collected by the apron at the time of the soiling work by the apron.

JP 2008-173060 A

  By the way, in the conventional shaving work machine, as shown in FIGS. 9 and 10, the position adjusting unit 940 is attached to the main body 943 attached to the shield cover 911 and to the main body 943 so as to be rotatable in the front-rear direction. The arm portion 945 that adjusts the position of the front end portion of the rod portion 931 in contact with the pin member 935 of the rod portion 931 to regulate the front side movement, and the arm portion 945 attached to the upper portion of the main body portion 943. And a cylinder portion 947 to be rotated. And the pin member 935 is attached so that a movement along the long hole part 941 provided in the position adjustment part 940 is possible. Further, as shown in FIG. 11, when the arm portion 945 and the cylinder portion 947 are substantially fully extended, the contact portion 945a moves to the vicinity of the rear end position of the long hole portion 941, and the pin member 935 is moved to the long hole portion 941. As shown in FIG. 12, the contact portion 945 a is formed so as to move in the vicinity of the front end position of the long hole portion 941 when the cylinder portion 947 is substantially fully contracted as shown in FIG. 12.

  The cylinder part 947 of the rotation restricting device 930 is configured such that the expansion and contraction movement is controlled in accordance with the operation of the operation switch of the operator who has boarded the traveling machine body 990. Therefore, the worker can move the pin member 935 back and forth in the traveling direction of the substitute working machine by moving the cylinder portion 947, and change the inclination angle of the apron. Then, for example, an operator who visually confirms the surface of the field may determine that the unevenness of the surface of the field is large, and during operation, the cylinder portion 947 may be moved by an operation switch to change the inclination of the apron. . And if the apron tilt changes, as mentioned above, the automatic device raises and lowers the substitute work machine, so even in situations where it is not necessary to raise or lower the substitute work machine, the substitute work machine is raised and lowered. Result.

  The present invention is intended to solve the problems associated with the prior art as described above, and the object of the present invention is to provide an automatic device that raises and lowers a substitute working machine in a situation where it is not necessary to raise and lower the substitute work machine. It is in place to prevent it.

  According to an embodiment of the present invention, a machine body that rotatably supports a rotary working unit that performs tillage work, a cover part that is provided on the machine body and covers an upper part of the rotary work part, and a rear end of the cover part An apron that is rotatably supported by the part, a support member that is attached to the back surface of the apron, an apron pressure state that is attached to the cover part and pressurizes the apron, and a state in which the apron can freely rotate An apron rotation control unit that can be switched to an apron pressurization release state, and the apron rotation control unit is a rod whose rear end portion is slidably attached to the support member A first spring portion mounted on the rod portion, a front end portion of the rod portion rotatably supported, and an arm portion rotatably supported with respect to the cover portion, the rod portion When A rotating shaft with respect to the arm portion, a cam bracket rotatably supported on the cam bracket rotating shaft and having a contact portion, and a drive portion for rotating the cam bracket, the contact portion being When the apron rotates and the arm part rotates as the rod part moves forward, at least one of the rod part, the rotating shaft and the arm part comes into contact with the apron. The first spring part is restricted, and the first spring part further includes the contact part after the contact part starts contact with at least one of the rod part, the pivot shaft, and the arm part. An agricultural machine is provided that pressurizes the apron when the apron rotates.

  The driving unit may include a gear and a motor, or a cylinder.

  The apron rotation control unit may further include a second spring unit that assists the rotation of the cam bracket.

  According to one embodiment of the present invention, whether the power supply unit and the power supply unit are turned on, the apron pressurization state or the apron pressurization release state which is the state of the agricultural machine according to any one of the above A storage unit that stores information on one of the states, and a display unit that displays any one state stored in the storage unit, the display unit from turning off the power supply unit A remote controller is provided that displays any one of the states stored in the storage unit when turned on.

  According to the agricultural machine according to the present invention, it is possible to prevent the automatic device from raising and lowering the scribing work machine in a scene where it is not necessary to raise and lower the scoring work machine.

It is a perspective view explaining the composition of the scribing work machine concerning one embodiment of the present invention. It is a top view explaining the structure of the substitute working machine which concerns on one Embodiment of this invention. It is a side view explaining the structure of the scribing work machine which concerns on one Embodiment of this invention. It is a partial side view for demonstrating the working state of the substitute working machine which concerns on one Embodiment of this invention. It is a partial side view for demonstrating the apron pressurization standby state of the scribing work machine which concerns on one Embodiment of this invention. It is a partial side view for demonstrating the apron pressurization state of the scribing work machine which concerns on one Embodiment of this invention. It is a partial side view for demonstrating the apron pressurization cancellation | release state of the scribing work machine which concerns on one Embodiment of this invention. It is a figure for demonstrating the remote control which hold | maintains the information of the apron pressurization state or apron pressurization cancellation | release state of the scribing work machine which concerns on one Embodiment of this invention. It is a partial top view of the left side of the conventional shaving machine. It is a partial side view for demonstrating the action | operation of the rotation control apparatus provided in the conventional proxy working machine. It is a partial side view for demonstrating the action | operation of the rotation control apparatus provided in the conventional proxy working machine. It is a partial side view of a scribing work machine for explaining an operation of a rotation restricting device when it is during normal work of a conventional scribing work machine.

  Hereinafter, an embodiment of the present invention will be described in detail with reference to the drawings. The following embodiments are examples of the embodiments of the present invention, and the present invention is not limited to these embodiments. Note that in the drawings referred to in this embodiment, the same portion or a portion having a similar function is denoted by the same reference symbol or a similar reference symbol (a reference symbol simply including A, B, etc. after a number) and repeated. The description of may be omitted. If there are parts with similar functions on the left and right, the one on the left is suffixed with “L”, the one on the right is suffixed with “R”, Even when both are called together or when they are called singly, a suffix may not be added. For example, the right apron rotation control unit may be 6R and the left apron rotation control unit 6L may be referred to as the apron rotation control unit 6 if they are not distinguished from each other. In addition, the dimensional ratio in the drawing may be different from the actual ratio for convenience of explanation, or a part of the configuration may be omitted from the drawing. 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, although the description will be made using the terms “front” or “rear”, the front indicates the direction of the traveling machine body that pulls the working machine with respect to the work machine, and the rear indicates the direction of the work machine with respect to the traveling machine body.

<First Embodiment>
The whole structure and each function part of the agricultural working machine which concerns on embodiment of this invention are demonstrated using FIG. 1 thru | or FIG. The farm work machine according to the embodiment of the present invention is connected to the rear part of a traveling machine body such as a tractor, and is a farm work machine that plows or stirs soil by rotating a work claw, such as a tillage work machine or a substitute shaving machine. Can be used. The present embodiment will be described with reference to an example of a shaving work machine in which left and right working bodies can be folded and unfolded on both sides of the working machine main body of the shaving work machine, but the agricultural work machine according to the present invention is a tilling work machine. It can also be applied to agricultural machines other than tillage machines and plows.

  FIGS. 1 to 4 are a perspective view, a top view, a side view, and a partial side view, respectively, for explaining the configuration of the scribing work machine 10 according to the present embodiment.

  The substitute working machine 10 according to the present embodiment has a three-part structure including a central working unit 10C, a left working unit 10L, and a right working unit 10R. The central working unit 10 </ b> C is disposed in the central part of the substitute working machine 10. The left working unit 10L and the right working unit 10R are attached to the left and right ends of the central working unit 10C so as to be rotatable in the vertical direction.

[Configuration of Central Working Unit 10C]
The central working unit 10C includes a top mast 11, a lower link connecting unit 12, an input shaft 13, a transmission frame 15, a support frame 16, a rotary working unit 20, a shield cover 23, a leveler 24, and an apron 25. And a link mechanism portion 26.

  The top mast 11 and the lower link connecting portion 12 are respectively provided at the front center portion and the front left and right two locations of the central working portion 10C. The top mast 11 and the lower link connecting portions 12 provided at the two left and right locations are respectively connected to the top link of the tractor 90 and the lower links (three point link mechanisms) provided at the two left and right locations. The substitute working machine 10 is mounted on the front part of the machine body having a main frame extending in the left-right direction so as to be movable up and down with respect to the rear part of the tractor 90. It should be noted that the proxy working machine 10 and the tractor 90 may be connected via an auto hitch frame attached to a three-point link mechanism of the tractor.

  The input shaft 13 is housed in a gear box 14 provided at the front center of the central working unit 10C and protrudes forward. Power is transmitted to the input shaft 13 from a PTO (Power Take Off) shaft of the tractor 90 via a universal joint or the like.

  The transmission frame 15 and the support frame 16 also serve as a main body frame, and extend horizontally on the left and right sides of the gear box 14. The transmission frame 15 includes a transmission shaft (not shown). The support frame 16 may be hollow without including a transmission shaft. A chain transmission case 18 is suspended from the side end portion of the transmission frame 15, and a side frame 19 is suspended from the side end portion of the support frame 16 so as to face the chain transmission case 18.

  The rotary working unit 20 includes a rotary shaft and a plurality of tilling claws 22. The rotary shaft is pivoted between the lower end portion of the chain transmission case 18 and the lower end portion of the side frame 19. The plurality of tilling claws 22 are detachably attached around the rotary shaft. The power transmitted from the tractor 90 to the input shaft 13 is shifted in the gear box 14, rotates the transmission shaft to rotationally drive the rotary shaft via the chain transmission case 18, and rotates the rotary working unit 20 in a predetermined direction. It is configured to perform tillage work. The rotary shaft may include an attachment flange and an attachment holder, and the plurality of tilling claws 22 may be detachably attached to the attachment flange and the attachment holder.

  The shield cover 23 is disposed between the lower part of the transmission frame 15 and the side frame 19 and covers the upper part of the rotary working unit 20.

  The apron (first ground leveling plate) 25 is attached to the rear end portion of the shield cover 23 so as to be rotatable in the vertical direction with the apron rotation shaft 25Ra as a fulcrum, and the rear side extends obliquely downward. The tillable ground is leveled by the rear end of the apron 25. The leveler (second leveling plate) 24 is attached to the rear end portion of the apron 25 so as to be rotatable in the vertical direction. The leveler 24 leveles the cultivated ground in the field further flat.

  One end portion of the link mechanism portion 26 is connected to the rear portion of the gear box 14, and the other end portion is connected to the upper surface of the leveler 24. The link mechanism 26 is movable in the vertical direction as the leveler 24 rotates in the vertical direction. In the present embodiment, the link mechanism unit 26 includes a swing arm 27 and a connecting rod 28.

  One end of the swing arm 27 is pivotally connected to the rear portion of the gear box 14, and the other end extends rearward so that the swing arm 27 can swing in the vertical direction. Here, one end of the swing arm 27 is rotatably connected to the rear portion of the gear box 14 with a shaft portion extending in the lateral direction as a rotation fulcrum.

  The connecting rod 28 is connected between the other end of the swing arm 27 and the upper surface of the leveler 24. That is, the swing arm 27 is connected to the leveler 24 via the connecting rod 28. Both ends of the connecting rod 28 are pivotally connected to the swing arm 27 and the leveler 24. For this reason, when the leveler 24 is rotated in the vertical direction, the swing arm 27 is rotated in the vertical direction via the connecting rod 28 with the shaft portion serving as a rotation fulcrum.

[Configuration of left and right working parts]
Next, the configuration of the left working unit 10L and the right working unit 10R will be described. The left working unit 10L and the right working unit 10R can be rotated in the vertical direction around the folding shaft 30 in the front-rear direction, which is a pivot point provided at both left and right ends of the central working unit 10C. Yes. The left working unit 10L and the right working unit 10R are selectively switched between a folded state (closed state) and an unfolded state (open state) by rotation, and in the unfolded state, tillage work can be performed by power from the central working unit 10C. It is.

  Since the left working unit 10L and the right working unit 10R have a substantially bilaterally symmetric structure, the configuration of the left working unit 10L will be described in more detail below. The left working unit 10L includes a left cylinder 31L, two left side frames 32L and 33L (not shown), a rotary working unit 20L (not shown), a left shield cover 23L, a left leveler 24L, and a left apron 25L. Yes.

  The left cylinder 31L functions as a left rotation driving means as a drive source for rotating the left working unit 10L with respect to the central working unit 10C based on an expansion / contraction operation. The left working portion 10L is deployed on the outer side of the central working portion 10C by rotating by a predetermined angle, for example, approximately 180 degrees, in the deployment direction around the folding shaft 30 based on the operation of the left cylinder 31L. It becomes a state, and it will be in the folding state located above 10 C of center work parts by rotating the predetermined angle to the folding direction centering on the folding shaft 30, for example, about 180 degree | times.

  The left side frames 32L and 33L (not shown) are provided at both left and right ends of the left working unit 10L. In this example, the left side frames 32L and 33L (not shown) are integrated with the left shield cover 23L.

  The rotary working unit 20L is rotatably supported between the lower portions of the left side frames 32L and 33L. The rotary working unit 20L has a rotary shaft L and a plurality of tilling claws 22 (both not shown), like the rotary working unit 20 provided in the central working unit 10C.

  The left shield cover 23L is provided between the upper parts of the left side frames 32L and 33L so as to cover the upper part of the rotary working part 20L. In the present embodiment, the left shield cover 23L is configured similarly to the shield cover 23 provided in the central working unit 10C.

  The left apron 25L is attached to the rear end portion of the left shield cover 23L so as to be rotatable in the vertical direction. The left leveler 24L is attached to the rear end portion of the left apron 25L so as to be rotatable in the vertical direction.

  The left working unit 10L has a configuration in the direction of the rotation axis OL (not shown) of the rotary working unit 20L that is substantially the same as the configuration of the central working unit 10C. That is, in the cross section on the plane orthogonal to the rotation axis OL of the rotary working unit 20L, the cross-sectional configurations of the rotation axis OL, the left shield cover 23L, the left apron 25L, and the left leveler 24L of the rotary working unit 20L are the same as those of the central working unit 10C. They have substantially the same cross-sectional configuration as those.

  As described above, the power transmitted from the tractor 90 to the input shaft 13 is provided to the left working unit 10L and the right working unit 10R together with the rotary working unit 20 of the central working unit 10C through the transmission mechanism. It is transmitted to the working units 20L and 20R (not shown), and is configured to rotate the rotary working units 20L and 20R in a predetermined direction.

  The left extension leveler 34L is provided at the outer end of the left leveler 24L so as to be rotatable in the vertical direction. The left extension leveler 34L is provided so as to be rotatable around a shaft portion 35 extending in the front-rear direction at the left and right outer ends of the left leveler 24L. The left extension leveler 34L extends to the outside of the left leveler 24L in the unfolded work position, assists the leveling work of the left leveler 24L, and rotates to the position (folding position) where the left leveler 24L is folded upward. Stored on 24L.

  Further, the left extension leveler 34L can be rotated between a retracted position and a working position by a rotating device 36 provided on the left shield cover 23L of the left working portion 10L. The rotation device 36 is connected between the drive motor covered by the cover 37, the drive motor and the left extension leveler 34L, and rotates the left extension leveler 34L by the driving force from the drive motor. have.

  The left leveler connecting portion 40L is attached to the leveler 24 of the central working portion 10C and the left leveler 24L of the left working portion 10L, and the rotating direction of the leveler 24 relative to the apron 25 or the rotating direction of the left leveler 24L relative to the left apron 25L. The relative operating range of the apron 25 and the left apron 25L is regulated. That is, the left leveler connecting portion 40L links the leveler 24 and the left leveler 24L. The left leveler connecting portion 40L has a left locking portion 41L attached to the left leveler 24L and a left receiving portion 42L attached to the leveler 24.

  The configuration of the left working unit 10L has been described above. The configuration of the right working unit 10R is substantially the same as that of the left working unit 10L, and L may be read as R for the reference numerals used in the description.

  The substitute working machine 10 may further include a plurality of mulch plates 39. The plurality of mulching plates 39 are attached to the front of the shaving machine 10. For example, when the tire marks of the traveling tractor 90 are formed on the tillage ground and a soil offset occurs, the soil offset can be returned by the earthing plate 39 to flatten the tillable ground.

[Configuration of Apron Rotation Control Unit]
Since the left working unit 10L and the right working unit 10R have substantially symmetrical structures, the right apron rotation control unit 6R provided in the right working unit 10R will be described in more detail below. As shown in FIG. 1, the right working unit 10 </ b> R is provided with a right apron rotation control unit 6 </ b> R that regulates the rotation of the right apron 25 </ b> R toward the back side. Here, on the basis of the right apron 25R, the rotary working portion 20R side is referred to as “abdominal surface side”, and the side opposite to the abdominal surface side on the support member 55R (see FIG. 3) side is referred to as “back side”.

  As shown in FIGS. 3 and 4, the right apron rotation control section 6R includes a rod section 60R, a spring (first spring section) 58R, a rod arm 64R, a cam bracket 68R, a spring (second spring section) 74R, A pressure gear link 76R, a gear 79R, and a motor 80R are provided.

  The rod portion 60R is attached so that its rear end portion is rotatable and slidable with respect to a support member 55R attached to the back surface of the right apron 25R. The front end of the rod portion 60R is rotatably attached to the rod arm 64R.

  The support member 55R includes a pair of support plates that are disposed to face each other in the left-right direction. Between these support plates, a cylindrical rotating portion 56R is rotatably attached. The rear end portion of the rod portion 60R is slidably inserted into the rotating portion 56R. A spring 58R is attached to the rod portion 60R. In this example, there is no insertion hole for inserting the pin in the intermediate portion of the rod portion 60R, but a plurality of insertion holes may be provided at predetermined intervals in the axial direction of the rod portion 60R. Good. In this case, if the pin insertion position is changed, the size of the gap between the spring 58R extending naturally and the pin can be adjusted, and the apron pressure when the right apron 25R is in a pressurized state can be adjusted. become.

  One end of the rod arm 64R is rotatably attached to the rod portion 60R, and the other end is rotatably attached to the right shield cover 23R.

  The cam bracket 68R is rotatably supported on the cam bracket rotation shaft 70R. In this example, the cam bracket rotation shaft 70R is a pin. However, the cam bracket rotation shaft 70R is not limited to a pin as long as the member has a function of rotatably supporting the cam bracket 68R. Further, the cam bracket 68R contacts the first contact portion 68Ra that receives a force from the pressure gear link 76R when the pressure gear link 76R rotates, and the rod arm rotation shaft 66R when the substitute working machine 10 is in a working state. Second contact portion 68Rb (see FIG. 4), third contact portion 68Rc (see FIG. 5) that contacts the rod arm rotation shaft 66R when the apron presser is in the apron pressurizing state, and apron pressurization state of the prosthetic work device 10 A fourth contact portion 68Rd (see FIG. 5) that sometimes contacts the pin that becomes the rod arm / rod rotation shaft 62R and a fifth contact portion that contacts the cam bracket contact portion (pin) 72R when the apron of the scribing work machine 10 is pressurized. 68Re (see FIG. 7).

  The cam bracket 68R is necessary for controlling the rotation of the apron. The cam bracket 68R is rotatably attached to the link template 23Ra. Since the link template 23Ra is a part of the right shield cover 23R, it can be said that the cam bracket 68R is rotatably attached to the right shield cover 23R.

  The drive unit rotates the cam bracket 68R. The drive unit rotates the cam bracket 68R, and when the apron pressurizing state of the substitute working machine 10, the cam bracket 68R comes into contact with the pin where the fourth contact portion 68Rd of the cam bracket 68R becomes the rod arm / rod rotation shaft 62R. On the other hand, the cam bracket 68R is positioned so that the fourth contact portion 68Rd of the cam bracket 68R does not contact the pin that becomes the rod arm / rod rotation shaft 62R when the proxy working machine 10 is in the apron pressure release state. If you have. In this example, the drive unit includes a motor 80R, a gear 79R, and a pressure gear link 76R. The details of how the drive unit rotates the cam bracket 68R will be described in the description of the operation of the apron rotation control unit.

  The rotation of the right apron 25R can be controlled by driving the motor 80R and controlling the rotation of the cam bracket 68R according to the operation of the operation switch of the operator who has boarded the tractor 90. The operation switch only needs to be installed in a range that can be operated by an operator who is on board the tractor 90, and may be installed in the driver's seat of the tractor 90 or the front side portion of the substitute work machine 10.

[Operation of apron rotation control unit]
The operation of the right apron rotation control unit 6R will be described with reference to FIGS. FIG. 5 is a partial side view for explaining an apron pressurization standby state of the scribing work machine according to the embodiment of the present invention. FIG. 6 is a partial side view for explaining an apron pressurizing state of the scribing work machine according to the embodiment of the present invention.

  The apron pressurization state refers to a state in which the rotation of the apron is restricted. The apron pressurization state will be described with reference to FIGS. 5 and 6. In FIG. 5, the fourth contact portion 68Rd of the cam bracket 68R is not in contact with the pin serving as the rod arm / rod rotation shaft 62R. When an external force is applied upward to the right apron 25R in this state, the right apron 25R rotates clockwise with the apron rotation shaft 25Ra as a rotation fulcrum and the side views as shown in FIGS. The rod portion 60R moves forward. Here, the meaning that the rod portion 60R moves “forward” means that the front is based on the traveling direction of the tractor 90, and includes not only the front in the horizontal direction with the ground surface, but also includes the oblique forward. That is, since the rod portion 60R moves forward and also moves upward, it moves in an obliquely forward direction, but here it is expressed as “front”.

  When the rod portion 60R moves forward, the rod arm 64R rotates clockwise with the rod arm rotation shaft 66R as a rotation fulcrum, and the fourth contact portion 68Rd of the cam bracket 68R moves to the rod arm / rod rotation shaft 62R. Touch the pin. After the fourth contact portion 68Rd of the cam bracket 68R starts to contact the pin that becomes the rod arm / rod rotation shaft 62R, the right apron 25R rotates clockwise with the apron rotation shaft 25Ra as the rotation fulcrum. Then, the rotation part 56R slides on the rod part 60R. Since the rear end portion of the rod portion 60R shown in FIG. 6 is positioned below the rear end portion of the rod portion 60R shown in FIG. 5, the rotating portion 56R slides on the rod portion 60R upward. You can see that

  When the plowing depth is deepened during the shaving operation, soil accumulates on the abdominal surface side of the right apron 25R and rotates upward so that the rotating portion 56R slides on the rod portion 60R. When the rotating portion 56R slides on the rod portion 60R, the spring 58R in contact with the rotating portion 56R is pushed up, and is in a contracted state as compared with the state of FIG. Then, since the spring 58R tries to return to the original state from the contracted state, a force is applied to the right apron 25R, and the cultivated soil is pressurized by the right apron 25R. This state is an apron pressurization state. 5 and FIG. 6, the positions of the cam bracket 68R and the fourth contact portion 68Rd of the cam bracket 68R are not changed. When the right apron 25R rotates clockwise with the apron rotation shaft 25Ra as a rotation fulcrum and the side view as shown in FIGS. 5 to 7 as a reference, the state changes from the state of FIG. 5 to the apron pressurization state of FIG. . If it does so, if the right apron 25R rotates, the state of FIG. 5 may be in an apron pressurization state. Therefore, here, the state of FIG. 5 is expressed as an “apron pressurization standby state”.

  In this embodiment, the apron rotation control unit is not disposed in the central working unit 10C, the left apron rotation control unit 6L is disposed in the left working unit 10L, and the right apron rotation control is performed in the right working unit 10R. Part 6R is arranged. However, if the rotation of the left apron 25L and the right apron 25R is restricted by the left apron connection portion 43L and the right apron connection portion 43R (not shown), the rotation of the apron 25 in the central working unit 10C is controlled. Will be regulated.

  Next, the process from the apron pressurization state to the apron pressurization release state will be described with reference to FIG. FIG. 7 is a partial side view for explaining the apron pressure release state of the scribing work machine according to the embodiment of the present invention.

  In order to change from the apron pressurization state to the apron pressurization release state in which the right apron 25R can freely rotate, the pin that is the rod arm / rod rotation shaft 62R of the rod portion 60R rotates upward. Need to be released from the regulated state. Referring to FIGS. 5 to 7, in the apron pressure state, as shown in FIG. 6, the pin that is the rod arm / rod rotating shaft 62R of the rod portion 60R is connected to the fourth contact portion 68Rd of the cam bracket 68R. The apron is prevented from rotating upward by contacting with. Therefore, in order to release from this state, it is necessary that the fourth contact portion 68Rd of the cam bracket 68R does not contact the pin that is the rod arm / rod rotation shaft 62R of the rod portion 60R. Specifically, first, the apron pressurizing state of the scribing work machine 10 shown in FIG. 6 is changed to the apron pressurizing standby state of the scribing work machine 10 shown in FIG. Normally, the operator lifts the substitute work machine 10 to put the apron press standby state of the substitute work machine 10 shown in FIG. After that, as shown in FIG. 7, when the cam bracket 68R rotates counterclockwise with the cam bracket rotation shaft 70R as a rotation fulcrum and with reference to the side view of FIG. 7, the fourth contact portion 68Rd of the cam bracket 68R. Is not in contact with the pin that is the rod arm / rod rotation shaft 62R of the rod portion 60R.

  In this example, in order to rotate the cam bracket 68R counterclockwise with the cam bracket rotation shaft 70R as a rotation fulcrum and using the side view of FIG. 7 as a reference, it is necessary to drive the motor 80R. That is, when the motor 80R is driven to rotate the gear 79R, the pressure gear link 76R rotates clockwise with the pressure gear link rotation shaft 78R as a rotation fulcrum, with reference to the side view of FIG. . Then, the first contact portion 68Ra of the cam bracket 68R receives a force from the pressure gear link 76R. Then, the cam bracket 68R rotates counterclockwise with the cam bracket rotation shaft 70R as a rotation fulcrum and with reference to the side view of FIG.

  In this example, the pressure gear link 76R rotates within a certain range. That is, when the pressure gear link 76R rotates clockwise with the pressure gear link rotation shaft 78R as a rotation fulcrum and reaches a predetermined position with reference to the side view of FIG. 7, it does not rotate any more. . Then, the first contact portion 68Ra of the cam bracket 68R does not receive a force from the pressure gear link 76R.

  However, in this example, the spring (second spring portion) 74R assists the rotation of the cam bracket 68R. In this example, the spring 74R is a torsion coil spring. One end of the spring 74R is fixed to the right shield cover 23R, and the other end is fixed to the cam bracket 68R. The spring 74R exerts a force in the direction to open. In other words, force acts in the direction in which the arm angle between the two arms of the spring 74R becomes larger. Specifically, as shown in FIG. 7, the other end of the spring 74R fixed to the cam bracket 68R is a line connecting one end of the spring 74R fixed to the right shield cover 23R and the cam bracket rotation shaft 70R. When the cam bracket 68R is positioned on the suspension arm rotation shaft 54R side as a reference and the force to open the spring 74R causes the cam bracket 68R to use the cam bracket rotation shaft 70R as a rotation fulcrum, the side view of FIG. It rotates counterclockwise as a reference. On the other hand, as shown in FIGS. 5 and 6, the other end of the spring 74R fixed to the cam bracket 68R is a line connecting one end of the spring 74R fixed to the right shield cover 23R and the cam bracket rotation shaft 70R. When positioned on the right shield cover 23R side as a reference, the cam bracket 68R uses the cam bracket rotation shaft 70R as a rotation fulcrum by the force to open the spring 74R, and the side views of FIGS. Turn clockwise as a reference.

  When the cam bracket 68R rotates by receiving a force from the spring 74R, the cam bracket 68R rotates until no force is received from the spring 74R unless there is a mechanism for controlling the rotation of the cam bracket 68R. That is, the cam bracket 68R rotates by receiving a force from the spring 74R until the spring 74R is fully extended.

  However, in this example, there is a mechanism for stopping the rotation of the cam bracket 68R. In this example, the second contact portion 68Rb and the third contact portion 68Rc of the cam bracket 68R are mechanisms for stopping the rotation of the cam bracket 68R. Specifically, when the apron pressurization standby state shown in FIG. 5 is changed to the apron pressurization release state shown in FIG. 7, the cam bracket 68 </ b> R is reversed from the state of FIG. 5 with reference to the side views of FIGS. 5 and 7. Rotate clockwise. Then, as shown in FIG. 7, when the fifth contact portion 68Re of the cam bracket 68R comes into contact with the pin 72R of the suspension arm 50R, the cam bracket 68R receives the force from the spring 74R, but the rotation thereof. It can be stopped. By a series of these operations, the apron pressurization state of FIG. 6 is changed to the apron pressurization release state of FIG. In this example, in the apron pressure release state of FIG. 7, a gap is generated between the right locking portion (pin) 41R and the right receiving portion 42R of the right leveler coupling portion 40R.

  When the worker starts work, an upward external force is further applied to the leveler 24R, and the leveler 24R rotates upward. When the leveler 24R rotates upward, the pin 72R rotates upward. By rotation of the pin 72R, the cam bracket 68 is further rotated counterclockwise with reference to the side views of FIGS. 4 and 7 by the force of the spring 74R. Then, as shown in FIG. 4, the second contact portion 68Rb of the cam bracket 68R comes into contact with the rod arm rotation shaft 66R, so that the cam bracket 68R receives a force from the spring 74R but stops its rotation. It is done. If the clearance between the right locking portion (pin) 41R of the right leveler coupling portion 40R and the right receiving portion 42R is not taken into consideration, the apron pressurization state of FIG. Transition to the work state of FIG.

  On the other hand, when the apron pressurization release state shown in FIG. 7 is changed to the apron pressurization standby state shown in FIG. 5, the cam bracket 68R is rotated clockwise from the state of FIG. 4 with reference to the side views of FIGS. Move. As shown in FIG. 5, when the third contact portion 68Rc of the cam bracket 68R comes into contact with the rod arm rotation shaft 66R, the cam bracket 68R receives a force from the spring 74R, but stops its rotation. It is done.

  When performing normal scuffing work, the apron is released from pressure. When the cam bracket 68R is further rotated counterclockwise with reference to the side view of FIG. 7 from the apron pressure release state shown in FIG. 7, the working state shown in FIG. 4 is obtained. The work state shown in FIG. 4 is a kind of apron pressure release state because the right apron 25R is released from the pressurization. When the tractor 90 is moved forward in this state, the cultivated soil in the field is cultivated by the rotary working units 20, 20L and 20R, the cultivated soil cultivated by the aprons 25, 25L and 25R is leveled, and further, the levelers 24, 24L and 24R The surface of the cultivated soil is leveled, and normal shaving work can be performed. When the plowing pressure is released, the automatic device of the tractor 90 performs the plowing operation based on the detection result of the depth sensor installed in the plowing work machine 10 so that the plowing depth is set when the plowing depth changes. The machine 10 is moved up and down.

  On the other hand, in order to change from the apron pressurization release state of FIG. 7 to the apron pressurization standby state of FIG. 5, first, the motor 80R is driven. When the motor 80R is driven, the gear 79R rotates. The rotation of the gear 79R is opposite to the rotation of the gear 79R when changing from the apron pressurization standby state to the apron pressurization release state. When the gear 79R rotates, the pressure gear link 76R rotates counterclockwise with the pressure gear link rotation shaft 78R as a rotation fulcrum and with reference to the side view of FIG. When the pressure gear link 76R rotates counterclockwise with the pressure gear link rotation shaft 78R as a rotation fulcrum and is based on the side view of FIG. 7, the first contact portion 68Ra of the cam bracket 68R is the pressure gear link. Receives power from 76R. Then, the cam bracket 68R rotates clockwise with the cam bracket rotation shaft 70R as a rotation fulcrum, with reference to the side view of FIG.

  When the pressure gear link 76R rotates counterclockwise with the pressure gear link rotation shaft 78R as a rotation fulcrum and reaches a predetermined position with reference to the side view of FIG. 7, it does not rotate any more. Then, the first contact portion 68Ra of the cam bracket 68R does not receive a force from the pressure gear link 76R. However, the extension of the spring 74R causes the cam bracket 68R to rotate clockwise with the cam bracket rotation shaft 70R as a rotation fulcrum and with reference to the side views of FIGS. As shown in FIGS. 5 and 6, the third contact portion 68Rc of the cam bracket 68R comes into contact with the rod arm rotation shaft 66R, so that the cam bracket 68R receives the force from the spring 74R, but does not rotate. The movement is stopped.

  By a series of these operations, the apron pressurization release state of FIG. 7 is changed to the apron pressurization standby state of FIG. When the tractor 90 is caused to travel forward in the apron pressurized state of FIG. 6, the cultivated soil in the field is cultivated by the rotary working units 20, 20 </ b> L and 20 </ b> R, and the cultivated soil cultivated by the aprons 25, 25 </ b> L and 25 </ b> R is leveled. Further, even when the convex portions on the field surface are cultivated, the aprons 25, 25L and 25R rotate only to the specified positions, so that the depth sensor is difficult to react and the proxy working machine does not rise. And 25R, the plowing work can be performed by pressing the cultivated soil and leveling the surface of the cultivated soil leveled by the levelers 24, 24L and 24R.

  In the present embodiment, the apron pressure state is reached when the fourth contact portion 68Rd of the cam bracket 68R contacts the rod arm rotation shaft 66R, as shown in FIG. Therefore, since the operator cannot change the inclination angle of the right apron 25R with the operation switch during the work, the automatic device does not need to raise or lower the substitute work machine 10 originally. The situation of raising and lowering does not occur. Therefore, there is an effect that it is possible to prevent the automatic device from raising and lowering the substitute working machine 10 in a scene where it is not necessary to raise and lower the substitute working machine 10 originally.

  In contrast to the prior art in which the rotation restricting device 930 includes the cylinder portion 947, the apron rotation control unit 6 of the present embodiment does not require a cylinder. The cylinder is generally more expensive than the motor. Therefore, in this embodiment, there is an effect that it is possible to provide cost-effective working machine 10 that is cost-effective and easy to use without complicating the structure of the working machine 10.

  Next, another embodiment will be described.

Second Embodiment
The second embodiment (not shown) is different from the first embodiment in the shape of the cam bracket, and has a contact portion that comes into contact with the rod portion 60 </ b> R when the plow work machine 10 is in the apron pressure state.

  Also in this embodiment, there exists an effect similar to 1st Embodiment.

<Third Embodiment>
The third embodiment (not shown) differs from the first embodiment in the shape of the cam bracket, and has a contact portion that comes into contact with the rod arm 64 </ b> R when the apron presser is in the apron working state.

  Also in this embodiment, there exists an effect similar to 1st Embodiment.

<Fourth embodiment>
The fourth embodiment (not shown) is different from the first embodiment in that the shape of the pressure gear link and the spring corresponding to the spring 74R of the first embodiment are not provided, and the shape of the pressure gear link is a cam bracket. When the first contact portion 68Ra of 68R receives a force from the pressure gear link, the cam bracket 68R is brought into contact with the rod arm rotation shaft 66R when the second contact portion 68Rb is in the working state of the substitute working machine 10. The shape is such that the third contact portion 68Rc can be rotated to a range in which the third contact portion 68Rc comes into contact with the rod arm rotation shaft 66R when the apron presser 10 is in the apron pressure state. If it is possible to rotate in this way, the spring 74R required in the first embodiment is not necessary.

  Also in this embodiment, there exists an effect similar to 1st Embodiment.

  Moreover, in this embodiment, since the spring equivalent to the spring 74R of 1st Embodiment is not required, there exists an effect that a number of parts can be reduced.

<Fifth Embodiment>
Unlike the first embodiment, the fifth embodiment (not shown) differs from the first embodiment in that the shape of the cam bracket and the pressure gear link corresponding to the pressure gear link 76R of the first embodiment are not provided. The shape of the cam bracket of the present embodiment is a shape having teeth that mesh with the gear 79R, and the same rotation as in the first embodiment can be achieved by the rotation of the gear 79R. If the cam bracket can rotate in the same manner as in the first embodiment, a pressure gear link corresponding to the pressure gear link 76R in the first embodiment is unnecessary.

  Also in this embodiment, there exists an effect similar to 1st Embodiment.

  In this embodiment, since the pressurization gear link equivalent to the pressurization gear link 76R of 1st Embodiment is not required, there exists an effect that a number of parts can be reduced.

  With reference to FIG. 8, the remote controller of the scribing work machine according to the present embodiment will be described. FIG. 8 is a view for explaining a remote controller that holds information on whether the apron pressurization state or the apron pressurization release state of the scribing work machine according to the embodiment of the present invention.

  Conventionally, the display unit of the remote controller displays the working state when the power is on, but does not display the last working state when the power is turned off and the power is turned on again. Specifically, when the work state when the power is on is the apron pressurization standby state (the apron pressurization ON state), when the power is turned off and the power is turned on again, the last work state, That is, the apron pressurization standby state is not displayed. Then, there was a problem that the worker did not know what the last working state was.

  As shown in FIG. 8, the remote controller 100 of this embodiment includes a power supply unit 101, a storage unit (not shown), and an apron pressure display unit 103.

  When the power supply unit 101 is turned on, the remote controller 100 can be operated. On the other hand, when the power supply unit 101 is turned off, the remote controller 100 cannot be operated.

  The storage unit is in a state in which the power supply unit 101 is on, and the state of the scribing work machine 10 according to the first to fifth embodiments is an apron pressurization standby state (an apron pressurization ON state and an apron pressurization state are also included). Or an apron pressurization release state (including an apron pressurization OFF state and a work state shown in FIG. 4). The storage unit is a computer-readable storage medium, such as a random access memory (RAM), a read only memory (ROM), or the like.

  When the apron 25 is in the apron pressurization standby state, the apron pressurization display unit 103 displays this state. In this example, the apron pressurization display unit 103 is an LED, and turns on the LED when the apron 25 is in the apron pressurization standby state.

  The apron pressurization display unit 103 displays the state stored in the storage unit when the power supply unit 101 is turned on from off. Specifically, the operator turns on the power supply unit 101 of the remote controller 100 and presses an “on” button for apron pressurization to enter an apron pressurization standby state. When the “ON” button for apron pressurization is pressed, the storage unit stores information that the scribing work machine 10 is in the apron pressurization standby state. Then, when the worker turns off the power supply unit 101 and turns on the power supply unit 101 again in the apron pressurization standby state, the apron pressurization display unit 103 displays according to the information stored in the storage unit. That is, the apron pressurization display unit 103 turns on the LED in accordance with the information that the scribing work machine 10 stored in the storage unit is in the apron pressurization standby state. As a result, the operator can recognize that the last state is the apron pressurization standby state. On the other hand, when the LED of the apron pressurization display unit 103 does not light, it means that the last state is the apron pressurization release state. Therefore, in this case, the operator can recognize that the last state is the apron pressure release state.

  However, a separate display unit may be provided to display the apron pressure release state. For example, the LED may be placed on the apron pressurization “off” button in the same manner as the LED is placed on the apron pressurization “on” button.

  In the present embodiment, the display unit of the remote controller displays the work state immediately before turning off the power supply unit of the remote control when the power supply unit of the remote control is turned on from off. For this reason, the worker can recognize the state of the work state (last state) immediately before turning off the power supply unit of the remote control. As a result, there is an effect that it is possible to prevent a situation in which an operator accidentally works in an apron pressurization state in a field that should originally be worked in an apron pressurization release state.

<Modification 1>
In each of the above embodiments, the apron rotation control unit is not disposed in the central working unit 10C, the left apron rotation control unit 6L is disposed in the left working unit 10L, and the right apron is disposed in the right working unit 10R. The rotation control unit 6R has been described as being disposed. But the apron rotation control part may be arrange | positioned not in the left working part 10L or the right working part 10R but in the central working part 10C. In addition, the apron rotation control unit may be disposed in all of the left working unit 10L, the central working unit 10C, and the right working unit 10R.

  This modification also has the same effect as the first embodiment.

<Modification 2>
As described above, the cam bracket 68 </ b> R of the first embodiment is in contact with the pin serving as the rod arm / rod rotation shaft 62 </ b> R when the proxy working machine 10 is in the apron pressure state. The cam bracket of the second embodiment contacts the rod portion 60R when the proxy working machine is in an apron pressure state. The cam bracket of the third embodiment contacts the rod arm 64R when the proxy working machine is in an apron pressurizing state. But it is not limited to one of these that a cam bracket contacts in the apron pressurization state of the shaving work machine 10. FIG. The cam bracket may be shaped so as to come into contact with any one of the pin serving as the rod arm / rod rotation shaft 62R, the rod portion 60R, and the rod arm 64R when the proxy working machine 10 is in the apron pressure state. The shape may be in contact with everything.

  This modification also has the same effect as the first embodiment.

<Modification 3>
In each of the above embodiments, the driving unit has been described on the assumption that the driving unit includes the motor 80R and the gear 79R. But a drive part is not limited to this, You may be comprised with a cylinder.

  In the present modification, there is an effect that the automatic device can be prevented from raising and lowering the substitute working machine 10 in a scene where it is not necessary to raise and lower the substitute working machine 10 originally.

  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.

6: Apron rotation control unit 10: Oyster work machine
24: Leveler 24L: Left leveler 25: Apron
25L: left apron 54R: suspension arm rotation shaft 55R: support member 56R: rotation portion
58R: Spring (first spring part)
60R: Rod part 62R: Rod arm / rod rotation axis
64R: Rod arm 66R: Rod arm rotation axis
68R: Cam bracket 70R: Cam bracket rotating shaft
74R: Spring (second spring portion) 76R: Pressure gear link 78R: Pressure gear link rotating shaft 79R: Gear 80R: Motor

Claims (4)

An airframe that rotatably supports a rotary working section that performs tillage work;
A cover provided on the machine body and covering an upper part of the rotary working unit;
An apron rotatably supported at the rear end of the cover part;
A support member attached to the back of the apron;
An apron rotation control unit attached to the cover unit and capable of switching between an apron pressurizing state for pressurizing the apron and an apron pressurizing release state in which the apron can freely rotate, and
The apron rotation control unit includes a rod part whose rear end is slidably attached to the support member;
A first spring portion attached to the rod portion;
An arm portion that rotatably supports the front end portion of the rod portion and is rotatably supported with respect to the cover portion;
A rotation axis of the rod portion and the arm portion;
A cam bracket rotatably supported on a cam bracket rotation shaft and having a contact portion;
A drive unit for rotating the cam bracket;
The contact portion includes at least one of the rod portion, the rotation shaft, and the arm portion when the arm portion rotates as the apron rotates and the rod portion moves forward. To regulate any one of the rotation,
When the apron further rotates after the contact portion starts to contact at least one of the rod portion, the pivot shaft, and the arm portion, the apron is Agricultural machine characterized by pressurization.   The agricultural machine according to claim 1, wherein the driving unit includes a gear and a motor or a cylinder.   The farm work machine according to claim 1 or 2, wherein the apron rotation control unit further includes a second spring portion for assisting rotation of the cam bracket. A power supply,
Information on the state of either the apron pressurization state or the apron pressurization release state, which is the state of the agricultural working machine according to any one of claims 1 to 3, in a state where the power supply of the power supply unit is on. A storage unit for storing
A display unit that displays any one state stored in the storage unit,
The display unit is a remote controller that displays any one state stored in the storage unit when the power source unit is turned on from off.

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