JP6633938B2 - Farm work machine and remote control - Google Patents

Description

  The present invention relates to an agricultural work machine and a remote control. In particular, the present invention provides an apron rotation that can be switched between an apron pressurized state in which the apron cannot rotate freely and pressurize the apron and a free state (apron pressurized release state) in which the apron can rotate freely. The present invention relates to an agricultural work machine provided with a motion control unit.

  Agricultural work machine with an apron (first leveling plate) for leveling the cultivated soil plowed by the tilling rotor and a leveler (second leveling plate) provided at the rear of the apron so as to be rotatable in the vertical direction to level the surface of the cultivated soil For example, in general, a scraping machine is connected to a rear portion of a traveling machine body so as to be able to move up and down via a three-point link mechanism.

  In the case where the plowing work is performed by the plowing machine, if the plow of the field has irregularities, the plowing machine is also moved up and down as the traveling machine body moves up and down, and the cultivated soil plowed by the tillage rotor. Tillage depth changes. This change in tillage has an adverse effect on rice growth.

  Therefore, for example, an automatic device that controls the ascent and descent based on the detection result of the depth sensor so that the agricultural work machine such as the shaving work machine connected to the traveling body such as the tractor has the set plowing depth (automatic plowing depth) It is known to provide a control device) on a traveling body. Since the depth sensor detects the plowing depth of the scraping machine based on the rotation angle detection of the apron, the use of this automatic device requires that the apron be in a free state during the scraping operation. As such a scraping machine, there is a scraping machine of Patent Document 1.

  The conventional plowing machine of Patent Document 1 includes a machine body rotatably supporting a rotary work unit that performs a tilling operation, a cover unit provided on the machine body and covering an upper portion of the rotary work unit, and a turning unit that rotates around a rear end of the cover unit. An apron movably supported, and a leveler rotatably supported at the rear end of the apron, and a rotation restricting means for restricting rotation of the apron, which has been moved to the burying work position, to the rear side. The rotation restricting means has a rod portion whose lower end is rotatably supported by the apron and extends upward, and a restricting position adjusting portion for adjusting a position for restricting the rotation of the apron to the rear side. The regulating position adjuster is configured to move the distal end by contacting with the distal end of the rod and rotatably supported by the main body to move the distal end. The arm and the arm provided on the main body are turned. The position of the tip of the rod part is reduced by the rotation of the arm part, the position where the amount of cultivated soil brought by the apron is reduced, the position where the amount of cultivated soil brought is increased, When performing, the apron can be moved to a position where the rotation of the apron is free, and the leveler performs a soil leveling operation of the cultivated soil collected by the apron at the time of the erosion operation by the apron.

JP 2008-173060 A

  As shown in FIGS. 9 and 10, the position adjusting unit 940 includes a main body 943 mounted on a shield cover 911 and a main body 943 that is rotatably movable in the front-rear direction. Arm portion 945 for adjusting the position where the rod portion 931 contacts the pin member 935 to restrict the forward movement of the front end of the rod portion 931, and the arm portion 945 attached to the upper part of the main body portion 943. And a rotating cylinder portion 947. A pin member 935 is movably attached along a long hole 941 provided in the position adjusting section 940. Also, as shown in FIG. 11, when the cylinder portion 947 is almost 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 moves the pin member 935 to the long hole portion 941 as shown in FIG. The contact portion 945a is moved to the vicinity of the front end position of the elongated hole portion 941 when the cylinder portion 947 is substantially fully contracted as shown in FIG.

  The cylinder portion 947 of the rotation restricting device 930 is configured so that the expansion and contraction is controlled in accordance with the operation of the operation switch of the operator riding on the traveling body 990. Therefore, by moving the cylinder portion 947, the operator can move the pin member 935 back and forth in the traveling direction of the substitute working machine, and can change the inclination angle of the apron. Then, for example, an operator who visually confirms the field surface determines that the unevenness of the field surface is large, and may change the inclination of the apron by moving the cylinder portion 947 with the operation switch during the operation. . When the inclination of the apron changes, as described above, the automatic device raises / lowers the substitute work machine. Therefore, even in a scene where it is not necessary to raise and lower the substitute work machine, the substitute work machine is raised and lowered. Results.

  The present invention seeks to solve the above-mentioned problems associated with the prior art, and an object of the present invention is to enable an automatic device to raise and lower a plowing work machine when it is not necessary to raise and lower the plowing work machine. It is to prevent that.

  According to one embodiment of the present invention, a machine body rotatably supporting a rotary work unit that performs a tilling operation, a cover unit provided on the machine body and covering an upper part of the rotary work unit, and a rear end of the cover unit Apron rotatably supported on the apron, a support member mounted on the back of the apron, an apron pressurized state mounted on the cover and pressurizing the apron, and a state in which the apron can rotate freely An apron rotation control unit capable of switching to an apron pressurization release state, wherein the apron rotation control unit has a rear end slidably attached to the support member. A first spring portion mounted on the rod portion; an arm portion rotatably supporting a front end portion of the rod portion; and an arm portion rotatably supported on the cover portion; and the rod portion. When A rotating shaft with the arm portion, a cam bracket rotatably supported on the cam bracket rotating shaft and having a contact portion, and a driving portion for rotating the cam bracket, wherein the contact portion is When the arm rotates as the apron rotates and the rod moves forward, at least one of the rod, the rotating shaft, and the arm is in contact with the arm. The first spring portion regulates any one of the rotations, and the first spring portion further contacts the at least one of the rod portion, the rotation shaft, and the arm portion after the contact portion starts contacting the at least one of the rod portion, the rotation shaft, and the arm portion. An agricultural working machine is provided, wherein the apron is pressurized 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 rotation of the cam bracket.

  According to an embodiment of the present invention, a power supply unit, and in a state where the power supply of the power supply unit is on, the apron pressurized state or the apron pressurized released state that is the state of the agricultural work machine according to any one of the above. A storage unit that stores information of any one of the states, and a display unit that displays any one of the states stored in the storage unit, wherein the display unit turns off the power of the power supply unit. When turned on, a remote controller for displaying any one of the states stored in the storage unit is provided.

  ADVANTAGE OF THE INVENTION According to the agricultural working machine which concerns on this invention, it can prevent that an automatic apparatus raises and lowers a shaving work machine in the scene which does not need to raise and lower a shaving work machine.

It is a perspective view explaining composition of a substitute working machine concerning one embodiment of the present invention. It is a top view explaining the composition of the scraping machine concerning one embodiment of the present invention. It is a side view explaining the composition of the scraping machine concerning one embodiment of the present invention. It is a partial side view for explaining the work state of the substitute working machine concerning one embodiment of the present invention. It is a partial side view for explaining the apron pressurization standby state of the substitute working machine concerning one embodiment of the present invention. It is a partial side view for explaining the apron pressurized state of the substitute working machine concerning one embodiment of the present invention. It is a partial side view for explaining the apron pressurization release state of the substitute operating machine concerning one embodiment of the present invention. It is a figure for explaining the remote control which holds the information of the apron pressurization state or the apron pressurization release state of the substitute working machine concerning one embodiment of the present invention. It is a partial top view on the left side of the conventional scraping machine. It is a partial side view for explaining the operation of the rotation restricting device provided in the conventional scraping machine. It is a partial side view for explaining the operation of the rotation restricting device provided in the conventional scraping machine. FIG. 10 is a partial side view of the conventional scraping machine for explaining the operation of the rotation restricting device during normal operation of the machine.

  Hereinafter, an embodiment of the present invention will be described in detail with reference to the drawings. The embodiments described below are examples of the embodiments of the present invention, and the present invention is not limited to these embodiments. In the drawings referred to in the present embodiment, the same portions or portions having similar functions are denoted by the same reference numerals or similar reference numerals (reference numerals in which A, B, etc. are appended after the numerals), and the same description is repeated. May be omitted. When there is a part having the same function on the left and right, the one on the left is given a suffix with "L", and the one on the right is given a suffix with "R", Even when both are called collectively or independently, a suffix may not be added. For example, the right apron rotation control unit may be referred to as 6R and the left apron rotation control unit 6L may be referred to as the apron rotation control unit 6 if the two are not distinguished. In addition, the dimensional ratios in the drawings may be different from the actual ratios for convenience of description, or some of the components may be omitted from the drawings. In addition, for convenience of explanation, the description will be made using the terms “upper” or “lower”, but “upper” or “lower” indicates the direction of the working machine in the working state. Similarly, the description will be made using the terms “forward” and “rearward”, where the front indicates the direction of the traveling machine to which the working machine is pulled relative to the working machine, and the rear indicates the direction of the working machine relative to the traveling machine.

<First embodiment>
With reference to FIGS. 1 to 4, a description will be given of the overall configuration and each functional unit of the agricultural working machine according to the embodiment of the present invention. The agricultural work machine according to the embodiment of the present invention is, for example, a farm work machine that is connected to a rear portion of a traveling machine such as a tractor and plows or agitates soil by rotating a work claw, such as a tilling work machine or a shaving machine. Can be used. The present embodiment will be described by taking an example of a plowing work machine in which left and right working bodies can be folded and unfolded on both sides of the work machine main body among the plowing work machines, but the agricultural work machine according to the present invention is a tilling work machine. Alternatively, the present invention can be applied to agricultural work machines other than the tillage work machine and the plowing machine.

  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 scraping machine 10 according to the present embodiment.

  The scraping 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 arranged at the center of the scraping 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 vertically rotatable.

[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 26.

  The top mast 11 and the lower link connecting portion 12 are provided at a front central portion and two front left and right portions of the central working portion 10C, respectively. The top mast 11 and the lower link connecting portions 12 provided at two places on the left and right sides are respectively connected to the top link of the tractor 90 and the lower links (three-point link mechanism) provided at two places on the left and right sides. The scraping machine 10 is attached to the front of a body having a main frame extending in the left-right direction so as to be able to move up and down with respect to the rear of the tractor 90. Note that the connection between the substitute working machine 10 and the tractor 90 may be via an auto hitch frame mounted on a three-point link mechanism of the tractor.

  The input shaft 13 is provided inside 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 both left and right sides of the gear box 14. The transmission frame 15 contains a transmission shaft (not shown). The support frame 16 may be hollow without the transmission shaft inside. A chain transmission case 18 is suspended from a side end of the transmission frame 15, and a side frame 19 is suspended from a side end 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 suspended between the lower end of the chain transmission case 18 and the lower end of the side frame 19. The plurality of tilling claws 22 are detachably attached around the axis of 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 rotate 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 the tilling work. Note that the rotary shaft may include a mounting flange or a mounting holder, and the plurality of tillage claws 22 may be detachably mounted on the mounting flange or the mounting holder.

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

  The apron (first leveling plate) 25 is attached to the rear end of the shield cover 23 so as to be rotatable up and down with the apron rotation shaft 25Ra as a fulcrum, and the rear side extends obliquely downward. With the rear end of the apron 25, the tilling ground is leveled flat. The leveler (second leveling plate) 24 is attached to the rear end of the apron 25 so as to be vertically rotatable. By the leveler 24, the tilling ground of the field is further leveled.

  The link mechanism 26 has one end connected to the rear of the gear box 14 and the other end connected to the upper surface of the leveler 24. The link mechanism 26 is vertically movable along with the vertical rotation of the leveler 24. In the present embodiment, the link mechanism 26 includes a swing arm 27 and a connecting rod 28.

  One end of the swing arm 27 is rotatably connected to the rear portion of the gear box 14, and the other end extends rearward so as to be able to swing vertically. Here, one end of the swing arm 27 is rotatably connected to a rear portion of the gear box 14 using a shaft 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 rotatably connected to the swing arm 27 and the leveler 24. Therefore, when the leveler 24 rotates in the vertical direction, the swing arm 27 rotates in the vertical direction via the connecting rod 28 with the shaft portion as a rotation fulcrum.

[Configuration of left and right working parts]
Next, the configurations 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 are rotatable up and down around a front / rear folding shaft 30 which is a pivot point provided at both left and right ends of the central working unit 10C. I have. 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, tilling 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 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. I have.

  The left cylinder 31L functions as a left rotation drive unit as a drive source for rotating the left working unit 10L with respect to the central working unit 10C based on the expansion and contraction operation. The left working unit 10L is rotated outside the central working unit 10C by a predetermined angle, for example, approximately 180 degrees in the developing direction about the folding shaft 30 based on the operation of the left cylinder 31L. By turning a predetermined angle about the folding shaft 30 in the folding direction, for example, about 180 degrees, the folding state is established above the central working unit 10C.

  Left side frames 32L and 33L (not shown) are provided on both left and right ends of 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 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), similarly to 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 unit 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 of the left shield cover 23L so as to be vertically rotatable. The left leveler 24L is attached to the rear end of the left apron 25L so as to be vertically rotatable.

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

  As described above, the power transmitted from the tractor 90 to the input shaft 13 is transmitted to the rotary working unit 20 of the central working unit 10C via the above-described transmission mechanism together with the rotary working units provided in the left working unit 10L and the right working unit 10R. It is configured to be transmitted to the working units 20L and 20R (not shown) and 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 vertically rotatable. The left extension leveler 34L is provided rotatably about a shaft 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 deployed working position and assists in the leveling operation of the left leveler 24L. When the left extension leveler 34L is turned to a position (storage position) where it is folded above the left leveler 24L, the left leveler 34L is rotated. 24L.

  The left extension leveler 34L is further rotatable between a storage position and a working position by a rotating device 36 provided on the left shield cover 23L of the left working unit 10L. The rotation device 36 is connected between the drive motor covered by the cover 37 and the drive motor and the left extension leveler 34L, and has a link mechanism unit 38 that rotates the left extension leveler 34L by the driving force from the drive motor. have.

  The left leveler connecting part 40L is attached to the leveler 24 of the central working part 10C and the left leveler 24L of the left working part 10L, and the direction of rotation of the leveler 24 with respect to the apron 25 or the direction of rotation of the left leveler 24L with respect to the left apron 25L. Regulates the relative operating range of the apron 25 and the left apron 25L. 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 almost the same as that of the left working unit 10L, and the symbols used in the description may be replaced with L for R.

  The substitute shaving machine 10 may further include a plurality of burrow plates 39. The plurality of burrow plates 39 are attached to the front of the scraper 10. For example, when a tire mark of the traveling tractor 90 is formed on the cultivated ground and a bias of the soil occurs, the bias of the soil can be returned by the burring plate 39 to flatten the cultivated ground.

[Configuration of Apron Rotation Control Unit]
Since the left working unit 10L and the right working unit 10R have a substantially symmetrical structure, 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 10R is provided with a right apron rotation control unit 6R for restricting the rotation of the right apron 25R to the rear side. Here, with respect to the right apron 25R, the rotary working unit 20R side is referred to as “abdominal side”, and the side opposite to the ventral 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 unit 6R includes a rod 60R, a spring (first spring) 58R, a rod arm 64R, a cam bracket 68R, a spring (second spring) 74R, A pressure gear link 76R, a gear 79R and a motor 80R are provided.

  The rod 60R has its rear end rotatably and slidably attached to a support member 55R attached to the back of the right apron 25R. The rod portion 60R has a front end rotatably attached to the rod arm 64R.

  The support member 55R includes a pair of support plates disposed to face each other in the left-right direction. A column-shaped rotating portion 56R is rotatably mounted between these support plates. The rear end of the rod portion 60R is slidably inserted through the rotating portion 56R. Further, a spring 58R is mounted on the rod portion 60R. In this example, there is no insertion hole for inserting a 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, when the pin insertion position is changed, the size of the gap between the spring 58R, which extends to its natural length, and the pin can be adjusted, and the apron pressing force when the right apron 25R is in the pressurized state can be adjusted. become.

  The rod arm 64R has one end rotatably attached to the rod portion 60R, and the other end rotatably attached to the right shield cover 23R.

  The cam bracket 68R is rotatably supported by a cam bracket rotation shaft 70R. In this example, the cam bracket rotation shaft 70R is a pin, but is not limited to a pin as long as it has a function of rotatably supporting the cam bracket 68R. Further, the cam bracket 68R receives a force from the pressure gear link 76R when the pressure gear link 76R rotates, and comes into contact with the rod arm rotation shaft 66R when the scraping machine 10 is in the working state. The second contact portion 68Rb (see FIG. 4), the third contact portion 68Rc (see FIG. 5) that comes into contact with the rod arm rotating shaft 66R when the scraping machine 10 is in the apron pressurized state, and the apron pressurized state of the scraping machine 10. A fourth contact portion 68Rd (see FIG. 5) that sometimes comes into contact with a pin serving as a rod arm / rod rotation shaft 62R, and a fifth contact portion that comes into contact with a cam bracket contact portion (pin) 72R when the apron is pressed by the scraper 10. 68Re (see FIG. 7).

  The cam bracket 68R is necessary to control 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 is pressed by the scraper 10, the fourth contact portion 68Rd of the cam bracket 68R contacts the pin serving as 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 serving as the rod arm / rod rotation shaft 62R when the apron pressurizing device 10 is in the apron pressure release state. It is only necessary to have The drive section has a motor 80R, a gear 79R, and a pressure gear link 76R in this example. 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 in accordance with the operation of the operation switch by the operator on the tractor 90. The operation switch only needs to be installed in a range that can be operated by an operator who has boarded the tractor 90, and may be installed on the driver's seat of the tractor 90 or on the front side of the scraper 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 the apron pressurizing standby state of the substitute working machine according to one embodiment of the present invention. FIG. 6 is a partial side view for explaining an apron pressurized state of the substitute working machine according to one embodiment of the present invention.

  The apron pressurized state refers to a state in which rotation of the apron is restricted. The pressurized state of the apron 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 to the right apron 25R in the upward direction in this state, the right apron 25R rotates clockwise with the apron rotation shaft 25Ra as a rotation fulcrum with reference to the side views as shown in FIGS. The rod portion 60R moves forward. Here, the meaning that the rod portion 60R moves “forward” means forward with reference to the traveling direction of the tractor 90, and includes not only the ground surface and the front in the horizontal direction, but also includes the oblique front. That is, since the rod portion 60R moves forward and upward, the rod portion 60R moves diagonally forward, but is expressed as "forward" here.

  When the rod portion 60R moves forward, the rod arm 64R rotates clockwise about the rod arm rotation shaft 66R as a rotation fulcrum, and the fourth contact portion 68Rd of the cam bracket 68R moves the rod arm / rod rotation shaft 62R. Contact the pin. After the fourth contact portion 68Rd of the cam bracket 68R starts contacting the pin serving as the rod arm / rod rotation shaft 62R, the right apron 25R further rotates clockwise with the apron rotation shaft 25Ra as a rotation fulcrum. Then, the rotating part 56R slides on the rod part 60R. The rear end portion of the rod portion 60R shown in FIG. 6 is located below the rear end portion of the rod portion 60R shown in FIG. 5, so that the rotating portion 56R slides the rod portion 60R upward. You can see that it is doing.

  When the plowing depth increases during the plowing operation, the soil accumulates on the abdominal surface side of the right apron 25R and turns upward, so that the turning portion 56R slides on the rod portion 60R. When the rotating portion 56R slides on the rod portion 60R, the spring 58R that is in contact with the rotating portion 56R is pushed up, so that the spring 58R contracts from the state shown in FIG. Then, in order to return the spring 58R from the contracted state to the original state, a force is applied to the right apron 25R, and the right apron 25R presses the cultivated soil. This state is the apron pressurized state. Note that comparing FIGS. 5 and 6, the positions of the cam bracket 68R and the fourth contact portion 68Rd of the cam bracket 68R have not changed. When the right apron 25R rotates clockwise with the apron rotation shaft 25Ra as a rotation fulcrum with reference to a side view as shown in FIGS. 5 to 7, the state of FIG. 5 transits to the apron pressurized state of FIG. . Then, when the right apron 25R rotates, the state of FIG. 5 can be in the apron pressurized state. Therefore, here, the state of FIG. 5 is expressed as “apron pressurization standby state”.

  In this embodiment, the apron rotation control unit is not arranged in the central work unit 10C, the left apron rotation control unit 6L is arranged in the left work unit 10L, and the right apron rotation control is arranged in the right work unit 10R. The part 6R is arranged. However, when the rotation of the left apron 25L and the right apron 25R is restricted by the presence of 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 portion 10C is performed. Will be regulated.

  Next, the transition from the apron pressurized state to the apron pressurized release state will be described with reference to FIG. FIG. 7 is a partial side view for explaining an apron pressurizing release state of the scraping machine according to one embodiment of the present invention.

  In order to change from the apron pressurized state to the apron pressurized release state in which the right apron 25R can freely rotate, the pin serving as the rod arm / rod rotary shaft 62R of the rod portion 60R is rotated upward. Need to be released from the regulated state. Referring to FIGS. 5 to 7, in the apron pressurized state, as shown in FIG. 6, the pin serving as the rod arm / rod rotation shaft 62R of the rod portion 60R is connected to the fourth contact portion 68Rd of the cam bracket 68R. , Restricting the apron from turning upward. 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 which is the rod arm / rod rotation shaft 62R of the rod portion 60R. Specifically, first, the state is changed from the pressurized state of the apron pressing machine 10 shown in FIG. 6 to the apron pressurizing state of the machine 10 illustrated in FIG. 5. Normally, the operator lifts the scraping machine 10 so as to bring the machine 10 into the apron pressurization standby state shown in FIG. Thereafter, as shown in FIG. 7, when the cam bracket 68R rotates counterclockwise with the cam bracket rotation shaft 70R as a rotation fulcrum with reference to the side view of FIG. 7, the fourth contact portion 68Rd of the cam bracket 68R. Does not come into 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 with reference to the side view of FIG. 7, 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 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 is rotated about the pressure gear link rotation shaft 78R as a rotation fulcrum and clockwise with reference to the side view of FIG. 7 and reaches a predetermined position, it does not further rotate. . Then, the first contact portion 68Ra of the cam bracket 68R does not receive any 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. The spring 74R has one end fixed to the right shield cover 23R and the other end fixed to the cam bracket 68R. Then, a force acts on the spring 74R in a direction in which the spring 74R is to be opened. In other words, force acts in a 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 connected to a line connecting one end of the spring 74R fixed to the right shield cover 23R and the cam bracket rotation shaft 70R. In the case where the cam bracket 68R is positioned on the suspension arm rotation shaft 54R side as a reference, the cam bracket 68R uses the cam bracket rotation shaft 70R as a rotation fulcrum due to the opening force of the spring 74R. Rotate counterclockwise as 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 connected to 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 due to the opening force of the spring 74R, and the side view in FIG. 5 and FIG. Rotate clockwise as reference.

  When the cam bracket 68R rotates by receiving a force from the spring 74R, the cam bracket 68R rotates until it receives no force 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 changing from the apron pressurizing standby state shown in FIG. 5 to the apron pressurized release state shown in FIG. 7, the cam bracket 68R is moved from the state shown in FIG. 5 with reference to the side views shown in FIGS. 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 rotates while receiving the force from the spring 74R. Can be stopped. By these series of operations, the apron pressurized state in FIG. 6 is changed to the apron pressurized release state in FIG. In this example, when the apron pressurization is released in FIG. 7, a gap is formed between the right locking portion (pin) 41R and the right receiving portion 42R of the right leveler connecting portion 40R.

  When the worker starts work, an external force is further applied to the leveler 24R in the upward direction, and the leveler 24R rotates upward. When the leveler 24R rotates upward, the pin 72R rotates upward. With the rotation of the pin 72R, the cam bracket 68 further rotates counterclockwise with the force of the spring 74R with reference to the side views of FIGS. Then, as shown in FIG. 4, when the second contact portion 68Rb of the cam bracket 68R comes into contact with the rod arm rotation shaft 66R, the rotation of the cam bracket 68R is stopped while receiving the force from the spring 74R. Can be If the gap between the right locking portion (pin) 41R of the right leveler connecting portion 40R and the right receiving portion 42R is not taken into consideration, the apron pressurized state of FIG. 6 passes through the apron pressurized standby state of FIG. Transition to the work state of FIG.

  On the other hand, when the apron pressurizing release state shown in FIG. 7 is changed to the apron pressurizing 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. Then, 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 rotation of the cam bracket 68R is stopped while receiving the force from the spring 74R. Can be

  When performing a normal scraping operation, the operation is performed in the apron pressurized state. When the cam bracket 68R further rotates counterclockwise with reference to the side view of FIG. 7 from the apron pressurized 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 pressurized release state since the right apron 25R is released from 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 furthermore, by the levelers 24, 24L and 24R. The surface of the cultivated soil is leveled, so that the ordinary plowing operation can be performed. In the apron pressurizing release state, the automatic device of the tractor 90 performs the slashing operation based on the detection result of the depth sensor installed in the slashing machine 10 so that when the tillage depth changes, the set tillage depth becomes the set tillage depth. The machine 10 is moved up and down.

  On the other hand, in order to change from the apron pressurizing release state in FIG. 7 to the apron pressurization standby state in 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 with reference to the side view of FIG. When the pressure gear link 76R is rotated counterclockwise with the pressure gear link rotation shaft 78R as a rotation fulcrum, and the first contact portion 68Ra of the cam bracket 68R is rotated by 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 reference to the side view in FIG. 7 and reaches a predetermined position with the pressure gear link rotation shaft 78R as a rotation fulcrum, it no longer rotates. Then, the first contact portion 68Ra of the cam bracket 68R does not receive any 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 with reference to the side views of FIGS. Then, 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, Movement is stopped.

  By a series of these operations, the apron pressurizing release state of FIG. 7 is changed to the apron pressurization standby state of FIG. When the tractor 90 is moved forward in the apron pressurized state in FIG. 6, the cultivated soil in the field is plowed by the rotary working units 20, 20L and 20R, and the cultivated soil plowed by the aprons 25, 25L and 25R is leveled. Further, even if the protruding portion on the surface of the field is tilled, the aprons 25, 25L, and 25R rotate only to the specified positions, so that the depth sensor does not easily react and the scraper does not rise. And 25R, the cultivated soil is pressurized and buried, and the leveling work can be performed to level the surface of the cultivated soil buried by the levelers 24, 24L, and 24R.

  In the present embodiment, the apron pressurized state occurs when the fourth contact portion 68Rd of the cam bracket 68R comes into contact with the rod arm rotation shaft 66R as shown in FIG. For this reason, the operator cannot change the inclination angle of the right apron 25R with the operation switch during the operation. There is no situation such as elevating. Therefore, there is an effect that it is possible to prevent the automatic device from raising and lowering the substitute work machine 10 in a scene where it is not necessary to raise and lower the substitute work machine 10 originally.

  Further, in contrast to the conventional art in which the rotation restricting device 930 has the cylinder part 947, the apron rotation control part 6 of the present embodiment does not require a cylinder. And cylinders are generally more expensive than motors. For this reason, in the present embodiment, there is an effect that the cost can be suppressed without complicating the structure of the substitute working machine 10, and the user-friendly substitute working machine 10 can be provided.

  Next, another embodiment will be described.

<Second embodiment>
The second 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 portion 60R when the substitute working machine 10 is in the apron pressurized state.

  This embodiment also has the same effects as the first 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 64R when the substitute working machine 10 is in the apron pressurized state.

  This embodiment also has the same effects as the first embodiment.

<Fourth embodiment>
The fourth embodiment (not shown) differs from the first embodiment in that the shape of the pressure gear link and the spring 74R of the first embodiment are not provided, and the shape of the pressure gear link is different from that of the cam bracket. When the first contact portion 68Ra of the 68R receives the force from the pressure gear link, the cam bracket 68R moves from the range in which the second contact portion 68Rb comes into contact with the rod arm rotation shaft 66R when the scraper 10 is in the working state. The third contact portion 68Rc has such a shape as to be able to rotate to a range in which the third contact portion 68Rc comes into contact with the rod arm rotating shaft 66R in the apron pressurizing state of the displacement machine 10. If the rotation can be performed in this manner, the spring 74R required in the first embodiment is not required.

  This embodiment also has the same effects as the first embodiment.

  Further, in the present embodiment, since a spring corresponding to the spring 74R of the first embodiment is not required, there is an effect that the number of parts can be reduced.

<Fifth embodiment>
The fifth embodiment (not shown) differs from the first embodiment in that the shape of the cam bracket is different from the first embodiment in that there is no pressure gear link corresponding to the pressure gear link 76R of the first embodiment. 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 that of the first embodiment can be performed by rotation of the gear 79R. If the cam bracket can rotate in the same manner as in the first embodiment, a pressing gear link corresponding to the pressing gear link 76R of the first embodiment is unnecessary.

  This embodiment also has the same effects as the first embodiment.

  In the present embodiment, since a pressure gear link corresponding to the pressure gear link 76R of the first embodiment is not required, an effect that the number of parts can be reduced can be obtained.

  With reference to FIG. 8, a remote control of the scraping machine according to the present embodiment will be described. FIG. 8 is a diagram for explaining a remote controller that holds information on the apron pressurized state or the apron pressurized release state of the scraping machine according to one embodiment of the present invention.

  Conventionally, the display unit of the remote controller displays the work state when the power is on, but does not display the last work state when the power is turned off and then turned on again. Specifically, if the work state when the power is on is an apron pressurization standby state (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 is a problem that the worker does not know what state the last work state was.

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

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

  In the storage unit, when the power supply unit 101 is turned on, the state of the substitute working machine 10 according to the first to fifth embodiments is changed to the apron pressurization standby state (the apron pressurization ON state, the apron pressurization state, and the like). It stores whether the state is an apron pressurizing release state (the apron pressurization OFF state, or the work state shown in FIG. 4 is also included). The storage unit is a computer-readable storage medium, such as a random access memory (RAM) or a read only memory (ROM).

  When the apron 25 is in the apron pressurizing standby state, the apron pressurizing display unit 103 displays this state. In this example, the apron press display unit 103 is an LED, and turns on the LED when the apron 25 is in the apron press 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, after the operator turns on the power supply unit 101 of the remote controller 100, the operator presses the "on" button for apron pressurization, thereby setting the apron pressurization standby state. When the “on” button for apron pressurization is pressed, the storage unit stores information that the substitute working 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 performs display according to the information stored in the storage unit. That is, the apron pressurization display unit 103 turns on the LED according to the information stored in the storage unit that the scraper machine 10 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 press display unit 103 does not light, it means that the last state is the apron press release state. Therefore, in this case, the operator can recognize that the last state is the apron pressurized state.

  However, a separate display unit may be provided to display the apron pressurized state. For example, an LED may be placed on the apron press "off" button, just like an LED is placed on the apron press "off" button.

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

<Modification 1>
In each of the above embodiments, the apron rotation control unit is not arranged in the central work unit 10C, the left apron rotation control unit 6L is arranged in the left work unit 10L, and the right apron is arranged in the right work unit 10R. The description has been made assuming that the rotation control unit 6R is disposed. However, the apron rotation control unit may not be arranged in the left working unit 10L or the right working unit 10R, but may be arranged in the central working unit 10C. Further, the apron rotation control unit may be arranged in all of the left working unit 10L, the central working unit 10C, and the right working unit 10R.

  Also in this modification, the same effects as those of the first embodiment can be obtained.

<Modification 2>
As described above, the cam bracket 68R according to the first embodiment comes into contact with the pin serving as the rod arm / rod rotation shaft 62R when the substitute machine 10 is in the apron pressurized state. The cam bracket according to the second embodiment comes into contact with the rod part 60R when the substitute operating machine is in the apron pressurized state. The cam bracket of the third embodiment comes into contact with the rod arm 64R when the apron is in the apron pressurized state. However, the contact of the cam bracket during the apron pressurizing state of the substitution machine 10 is not limited to one of these. The cam bracket may be shaped so as to contact any two of the pin serving as the rod arm / rod rotation shaft 62R, the rod portion 60R, and the rod arm 64R when the apron press machine 10 is in the apron pressurized state. , May be shaped so as to contact all.

  Also in this modification, the same effects as those of the first embodiment can be obtained.

<Modification 3>
In the above embodiments, the description has been given on the assumption that the driving unit includes the motor 80R and the gear 79R. However, the drive unit is not limited to this, and may be configured by a cylinder.

  In the present modification, there is an effect that it is possible to prevent the automatic device from raising and lowering the scraping machine 10 in a situation where it is not originally necessary to raise and lower the scraping machine 10.

  The present invention is not limited to the above-described embodiment, and can be appropriately changed without departing from the gist.

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

Claims (4)

An airframe that rotatably supports a rotary working unit that performs tilling work,
A cover unit provided on the body and covering an upper part of the rotary working unit;
An apron rotatably supported at the rear end of the cover,
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 pressing the apron and an apron pressurizing release state in which the apron can freely rotate,
The apron rotation control unit, a rear end portion is slidably attached to the support member, a rod portion,
A first spring portion attached to the rod portion;
An arm portion rotatably supporting a front end portion of the rod portion, and being rotatably supported with a rod arm rotation shaft as a rotation fulcrum with respect to the cover portion;
A rotating shaft for the rod portion and the arm portion,
A cam bracket rotatably supported by a cam bracket rotation shaft attached to the cover portion and having a third contact portion and a fourth contact portion;
A driving unit for rotating the cam bracket,
The third contact portion is in contact with the rod arm rotating shaft, and the fourth contact portion is at least the rod part front SL, the pivot shaft of the rod portion and the arm portion, and any of the arm portions or one in contact, agricultural machine, characterized in that the said aprons pressure.   The agricultural work machine according to claim 1, wherein the driving unit includes a gear and a motor or a cylinder.   The agricultural work machine according to claim 1, wherein the apron rotation control unit further includes a second spring unit that assists rotation of the cam bracket. 4. Power supply section,
In power-on state of the power supply unit, according to claim 1 wherein the apron pressurized state or the apron pressure release state of any one of the states is a state of the agricultural machine according to any one of claims 3 A storage unit for storing information of
A display unit for displaying any one of the states stored in the storage unit,
A remote controller for displaying any one of the states stored in the storage unit when the power of the power supply unit is turned on from off.

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