Riding management machine and operation unit

Abstract

To provide a riding management machine capable of reducing the number of components.SOLUTION: A riding management machine comprises: a first support member 150 fixed to a traveling machine 2; a second support member 160 fixed to the traveling machine 2 at a distance from the first support member 150; one shaft member 170 supported by the first support member 150 and the second support member 160; and at least one pedal and at least one lever rotatably supported on the shaft member 170 for operating a traveling operation of the traveling machine 2.SELECTED DRAWING: Figure 3

Description

[Technical field]

[0001] The present disclosure relates to a ride-on cultivation machine and an operation unit. [Background technology]

[0002] Patent Document 1 discloses a riding care machine (boom sprayer). This riding care machine has a lever and a pedal for operating the travel. The lever and the pedal are configured to rotate in response to the operation of the user. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] JP 2021-127064 A Summary of the Invention [Problem to be solved by the invention]

[0004] Conventional riding tillers have a structure in which the levers and pedals used to operate the tiller rotate about different shafts, leading to an increase in the number of parts.

[0005] The present disclosure aims to provide a ride-on management machine that can suppress an increase in the number of parts. [Means for solving the problem]

[0006] In one embodiment of the present disclosure, the ride-on management machine comprises a running body (2), a first support member (150) fixed to the running body (2), a second support member (160) spaced apart from the first support member (150) and fixed to the running body (2), one shaft member (170) supported by the first support member (150) and the second support member (160), and at least one pedal and at least one lever rotatably supported on the shaft member (170) for operating the running operation of the running body (2).

[0007] In the above-mentioned riding management machine, at least one pedal and at least one lever are supported by the same shaft member (170), so that the number of shaft members (170) can be reduced, and an increase in the number of parts can be suppressed. In addition, the pedal and lever are unitized with the first support member (150) and the second support member (160) to form an operation unit, so that the efficiency of the installation work on the traveling body (2) can be improved.

[0008] The shaft member (170) may include a large diameter portion (173) and a small diameter portion (175) having a diameter smaller than that of the large diameter portion (173). At least one lever may be sandwiched between a step portion (174) provided at the boundary between the large diameter portion (173) and the small diameter portion (175) and the first support member (150). In this case, the step portion (174) may be biased toward the first support member (150) by the biasing force of the elastic body (183). In such a configuration, the user needs to rotate the lever against the frictional force generated by the clamping.

[0009] The at least one pedal may include a plurality of pedals rotatably supported on the shaft member (170) so as to be movable in the axial direction of the shaft member (170). In this configuration, co-rotation between the plurality of pedals is suppressed.

[0010] The shaft member (170) may have a first end (171) and a second end (172) formed in a bolt shape. The first support member (150) may have a first through hole (155a) through which the first end (171) is inserted. The first end (171) may be fixed to the first support member (150) by a first nut (181) in a state in which the first end (171) is inserted into the first through hole (155a). The second support member (160) may have a second through hole (166) formed so that the second end (172) is inserted into the second through hole (166) to restrict rotation of the shaft member (170). The second end (172) may be fixed to the second support member (160) by a second nut (182) in a state in which the second end (172) is inserted into the second through hole (166). In this configuration, the second nut (182) is fastened to the second end (172) with the second end (172) inserted into the second through hole (166), thereby restricting rotation of the shaft member (170). Therefore, when the assembly work is performed in order from the second end (172) side, the first nut (181) can be preferably fastened. Effect of the Invention

[0011] According to the present disclosure, it is possible to provide a ride-on management machine that can reduce the number of parts. [Brief description of the drawings]

[0012] [Figure 1] FIG. 1 is a perspective view of a boom sprayer according to an embodiment of the present disclosure, viewed obliquely from above. [Diagram 2] FIG. 2 is a perspective view showing an example of an operation unit. [Diagram 3] FIG. 2 is an exploded perspective view showing an example of an operation unit. [Figure 4] FIG. 2 is a side view showing an example of an operation unit. [Diagram 5] FIG. 5 is a cross-sectional view taken along line VV in FIG. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0013] A boom sprayer, which is an example of a riding management machine according to the present disclosure, will be described below with reference to the attached drawings. In the description of the drawings, the same elements are given the same reference numerals, and duplicated descriptions will be omitted. Unless otherwise specified, terms indicating directions such as "front", "rear", "left", "right", "up", and "down" are based on the boom sprayer placed on a horizontal surface so that it can travel. In addition, in the description, the XYZ Cartesian coordinate system shown in the drawings will be appropriately referenced.

[0014] FIG. 1 is a perspective view of an example boom sprayer as viewed from the upper right front. FIG. 2 is a perspective view showing a vehicle frame of the boom sprayer. The example boom sprayer 1 shown in FIG. 1 is a self-propelled riding management machine equipped with a traveling machine body 2 and a boom device 3 which is a chemical solution spraying device. The boom sprayer 1 sprays a chemical solution (chemical) stored in a chemical solution tank 10 while traveling the traveling machine body 2 in a farm field. The boom sprayer 1 performs predetermined agricultural work such as spraying a chemical solution based on various operations by a driver (user).

[0015] The traveling machine body 2 includes a vehicle body frame 4 having a generally rectangular frame shape that is long in the front-rear direction. A liquid medicine tank 10 is disposed in the vehicle body frame 4 in the center in the front-rear direction. A recess is formed in the center of the front end of the liquid medicine tank 10, and a driver's seat 8 where a driver sits is provided in this recess. An engine room 13 is provided behind the liquid medicine tank 10. An engine as a driving source, a spray pump for spraying liquid medicine, and the like are provided in this engine room 13. A handle 9 for controlling the traveling direction of the traveling machine body 2 is provided in front of the driver's seat 8, and an operation unit 100 including a sub-shift lever 110, a brake pedal 120, an accelerator pedal 130, and a main shift lever 140 for operating the traveling operation of the traveling machine body 2 is disposed near the handle 9. The operation unit will be described in detail later.

[0016] A pair of front wheels 6 and a pair of rear wheels 7 are provided on the body frame 4. The front wheels 6 and the rear wheels 7 rotate when driven by the engine. In this embodiment, the vehicle is four-wheel drive, so the front wheels 6 and the rear wheels 7 rotate, but the vehicle may be front-wheel drive or rear-wheel drive.

[0017] The boom device 3 is provided at the front of the vehicle body frame 4. An example of the boom device 3 has a lifting device 22, a center boom 21, and a pair of side booms 23. The lifting device 22 is configured by a four-joint link mechanism. The lifting device 22 is supported at the front end of the vehicle body frame 4 so as to protrude forward from the vehicle body frame 4. The lifting device 22 is configured so that the front end side moves up and down, for example, by the operation of a hydraulic cylinder. The center boom 21 is provided at the front end of the lifting device 22 and extends along the left-right direction. For example, the center boom 21 is supported so as to be able to swing left and right in a pendulum-like manner relative to the lifting device 22. The pair of side booms 23 are supported at both ends of the center boom 21, respectively. The side booms 23 are configured to be operable to rotate between an unfolded position in which they are opened relative to the traveling body 2 and a stored position in which they are folded toward the traveling body 2. For example, the base end of the side boom 23 is rotatably supported relative to the center boom 21, and can be deployed and retracted by the operation of a hydraulic cylinder provided between the center boom 21 and the side boom 23.

[0018] A nozzle pipe 24 is attached to each of the center boom 21 and the side boom 23. A nozzle 25 for spraying the chemical solution is provided on each nozzle pipe 24. A plurality of nozzles 25 for spraying the chemical solution are provided along the longitudinal direction with the spray direction facing downward. For example, when spraying the chemical solution, the side boom 23 can be deployed from the state shown in FIG. 1 so as to be in a straight line with the center boom 21. Then, the chemical solution pressure delivery pump is driven while traveling by driving the engine, and the chemical solution in the chemical solution tank 10 is sprayed from the nozzle 25 via the nozzle pipes 24 of the center boom 21 and the side boom 23.

[0019] FIG. 2 is a perspective view showing the operation unit. FIG. 3 is an exploded perspective view showing the operation unit. FIG. 4 is a side view of the operation unit as seen from the Y direction. FIG. 5 is a cross-sectional view taken along the line VV in FIG. 4. An example of the operation unit 100 includes a first support member 150, a second support member 160, a shaft member 170, at least one lever, and at least one pedal. In this embodiment, the at least one lever and the at least one pedal are the sub-shift lever 110, the brake pedal 120, the accelerator pedal 130, and the main shift lever 140.

[0020] The auxiliary speed change lever 110 is connected to an auxiliary transmission (not shown) arranged on the lower side of the vehicle body frame 4. The auxiliary speed change lever 110 is operated to change (switch) the speed to high, medium, or low. The main speed change lever 140 is connected to a hydrostatic transmission (HST) for transmitting the power of the engine to the auxiliary speed change lever. The HST is a mechanism for generating hydraulic pressure using the power of the engine, and supplying a rotational driving force to the wheels (front wheels 6, rear wheels 7) by the hydraulic pressure to make the traveling body 2 travel. By operating the main speed change lever 140, the HST is controlled to one of a forward state in which the traveling body 2 moves forward, a neutral state in which no power is transmitted to the traveling body 2 (drive wheels), and a reverse state in which the traveling body 2 moves backward. The brake pedal 120 is a pedal for operating a brake system that stops the rotation of the wheels. The brake system can change the strength of the brake depending on the amount of depression of the brake pedal 120. The accelerator pedal 130 is a pedal for adjusting the output of the engine. The output of the engine can be adjusted depending on the amount of depression of the accelerator pedal 130.

[0021] The first support member 150 and the second support member 160 are fixed to a body frame 4 that constitutes the traveling body 2. In one example, the first support member 150 and the second support member 160 are fixed to the right side of the front end of the body frame 4, and the operation unit 100 is disposed to the right of the handle 9.

[0022] The first support member 150 includes a rectangular plate-shaped bottom wall portion 151 that abuts against the upper surface of the body frame 4, plate-shaped front wall portion 152 and rear wall portion 153 that protrude upward from the front end and rear end of the bottom wall portion 151, respectively, and a support plate portion 155 that connects the upper portions of the front wall portion 152 and the rear wall portion 153 and extends along the XZ plane. A pair of bolt holes 151b are formed in the bottom wall portion 151, through which bolts 151a for fixing to the body frame 4 are inserted. A through hole 155a (first through hole) for supporting the shaft member 170 is formed in the support plate portion 155. The through hole 155a penetrates the support plate portion 155 in the plate thickness direction (Y direction) and has a circular shape.

[0023] The second support member 160 is disposed spaced apart in the Y direction from the first support member 150. The second support member 160 includes a plate-shaped bottom wall portion 161 fixed to the body frame 4, plate-shaped front wall portion 162 and rear wall portion 163 protruding upward from the front end and rear end of the bottom wall portion 161, respectively, and a support plate portion 155 connecting the front wall portion 162 and the rear wall portion 163 and extending along the XZ plane.

[0024] The bottom wall portion 161 in one example has a shape that is bent at two places in the Y direction in a side view so as to have a bottom surface with different heights. That is, the bottom wall portion 161 has a first portion 161a on the front side, a second portion 161b on the rear side, and a third portion 161c that connects the first portion 161a and the second portion 161b. In the illustrated example, the first portion 161a, the second portion 161b, and the third portion 161c are not aligned with the XY plane, but are inclined. In the region where the second support member 160 is fixed, the shape of the upper surface of the body frame 4 may match the shape of the bottom surface of the bottom wall portion 161 of the second support member 160. Note that when the upper surface of the body frame 4 is aligned with the XY plane, the bottom wall portion 161 may be formed in a flat plate shape aligned with the XY plane, similar to the bottom wall portion 151 of the first support member 150.

[0025] The bottom wall portion 161 is formed with a pair of bolt holes through which bolts for fixing to the vehicle body frame 4 are inserted. In the illustrated example, a pair of bolt holes 161b1 are formed in the second portion 161b, and one bolt hole 161c1 is formed in the third portion 161c. The support plate portion 165 is formed with a through hole 166 (second through hole) for supporting the shaft member 170. The through hole 166 penetrates the support plate portion 165 in the plate thickness direction (Y direction). When viewed from the Y direction, the through hole 166 has an elongated hole shape having a pair of linear edge portions 166a facing each other.

[0026] The shaft member 170 has a rod shape extending in the Y direction, and is supported by the first support member 150 and the second support member 160. An example of the shaft member 170 has a first end 171 and a second end 172 that are threaded like a bolt. The first end 171 is one end in the Y direction, and is a portion that is inserted into the through hole 155a of the first support member 150. The first end 171 may be fixed to the first support member 150 by a nut 181 in a state where it is inserted into the through hole 155a.

[0027] The second end 172 is the other end in the Y direction, and is a portion that is inserted into the through hole 166 (long hole) of the second support member 160. The second end 172 has a pair of flat surfaces 172a that abut against the edge portion 166a of the through hole 166 to restrict the rotation of the shaft member 170 when inserted into the through hole 166. That is, the second end 172 has a pair of linear edge portions (flat surfaces 172a) similar to the through hole 166 when viewed from the axial direction. More specifically, the second end 172 has a pair of linear edge portions and a pair of threaded arc-shaped portions. The second end 172 may be fixed to the second support member 160 by a nut 182 (second nut) in a state where it is inserted into the through hole 166. In the illustrated example, a nut with a washer is shown as the nut 182, but the washer and the nut may be separate. In the following description, the diameter of second end 172 refers to the diameter of the arc-shaped portion of second end 172.

[0028] The shaft member 170 includes a large diameter portion 173 having a large diameter and a small diameter portion 175 having a smaller diameter than the large diameter portion 173. The large diameter portion 173 and the small diameter portion 175 each have a uniform diameter. A step portion 174 is formed at the boundary between the large diameter portion 173 and the small diameter portion 175. The shaft member 170 of the example has the large diameter portion 173 and the small diameter portion 175 between the first end portion 171 and the second end portion 172. The large diameter portion 173 is adjacent to the second end portion 172 and has a larger diameter than the small diameter portion 175, the first end portion 171, and the second end portion 172. The small diameter portion 175 is a region between the large diameter portion 173 and the first end portion 171, and is adjacent to the large diameter portion 173 and the first end portion 171. As an example, the small diameter portion 175 may be the base end of the first end 171 (the end close to the large diameter portion 173).

[0029] The auxiliary shift lever 110 includes a base 111 extending along the XZ plane and a lever body 112 connected to the upper end of the base 111. The base 111 is substantially L-shaped when viewed from the Y direction, and includes a first portion 111a and a second portion 111b extending in directions intersecting each other. In the base 111, a through hole 113 through which the shaft member 170 is inserted is formed at the boundary (corner portion of the L shape) between the first portion 111a and the second portion 111b. The through hole 113 is circular, and the diameter of the through hole 113 is slightly larger than the diameter of the large diameter portion 173. A support portion 111a1 formed in a U-shape is formed at the end of the first portion 111a, and the lever body 112 is attached to the support portion 111a1.

[0030] For example, the lower end of the lever body 112 is bent into an L-shape and inserted into a through-hole 111a2 formed in the support portion 111a1. The tilting of the lever body 112 is restricted by an elastic body 112a (torsion coil spring) disposed at the lower end. A push cable 111c connected to the sub-transmission is attached to an end of the second portion 111b. When the sub-transmission lever 110 is operated, the end of the second portion 111b moves in the circumferential direction around the shaft member 170, and the sub-transmission is operated in accordance with this movement via the push cable 111c.

[0031] The brake pedal 120 includes a cylindrical portion 121 and a plate-like portion 122 extending radially outward from the cylindrical portion 121 along the XZ direction. The cylindrical portion 121 is cylindrical and has an inner diameter slightly larger than the diameter of the large diameter portion 173 of the shaft member 170. The plate-like portion 122 has a first portion 122a protruding in one radial direction from the cylindrical portion 121 and a second portion 122b protruding in a direction substantially opposite to the first portion 122a. A pedal body 124 that is depressed by a user is provided at the tip of the first portion 122a. A mounting portion 123 for mounting a wire connected to a brake system is provided at the tip of the second portion 122b. A spring (not shown) may be attached to the second portion 122b to bias the plate-shaped portion 122 so that, when the pedal body 124 is depressed and the brake pedal 120 rotates, the position of the pedal body 124 returns to the position before it was depressed.

[0032] The accelerator pedal 130 includes a tubular portion 131 and a plate-like portion 132 extending radially outward from the tubular portion 131. The tubular portion 131 is cylindrical and has an inner diameter slightly larger than the diameter of the large diameter portion 173 of the shaft member 170. The plate-like portion 132 has a first portion 132a protruding in one radial direction from the tubular portion 131 and a second portion 132b protruding in a direction different from that of the first portion 132a. A pedal body 134 that is depressed by a user is provided at the tip of the first portion 132a. An attachment portion 133 for attaching a wire connected to an engine control system is provided at the tip of the second portion 132b. A spring (not shown) may be attached to the second portion 132b to bias the plate-like portion 132 so that when the pedal body 134 is depressed to rotate the accelerator pedal 130, the position of the pedal body 134 returns to the position before depression.

[0033] The main shift lever 140 includes a base 141 extending along the XZ plane and a lever body 142 connected to the upper end of the base 141. The base 141 is substantially L-shaped when viewed from the Y direction, and includes a first portion 141a and a second portion 141b extending in directions intersecting each other. In the base 141, a through hole 143 through which the shaft member 170 is inserted is formed at the boundary (corner portion of the L shape) between the first portion 141a and the second portion 141b. The through hole 143 is circular, and the diameter of the through hole 143 is smaller than the diameter of the large diameter portion 173 and slightly larger than the diameter of the small diameter portion 175. A support portion 141a1 formed in a U-shape is formed at the end of the first portion 141a, and the lever body 142 is attached to the support portion 141a1.

[0034] For example, the lower end of the lever body 142 is bent into an L-shape and inserted into a through-hole 141a2 formed in the support portion 141a1. The tilting of the lever body 142 is restricted by an elastic body 142a (torsion coil spring) disposed at the lower end. A push cable 141c connected to the HST is attached to the end of the second portion 141b. When the main shift lever 140 is operated, the end of the second portion 141b moves in the circumferential direction around the shaft member 170, and the HST is operated via the push cable 141c in accordance with this movement.

[0035] The sub-speed change lever 110, the brake pedal 120, the accelerator pedal 130, and the main speed change lever 140 are rotatably supported by a shaft member 170. The sub-speed change lever 110 is supported by a large diameter portion 173 of the shaft member 170 at a position adjacent to the second support member 160. In the illustrated example, a washer 185 is disposed between the sub-speed change lever 110 and the second support member 160. The inner diameter of the washer 185 is smaller than the diameter of the large diameter portion 173 and larger than the diameter of the second end portion 172. Therefore, the washer 185 is sandwiched between the second support member 160 and the end face of the large diameter portion 173 when disposed at the second end portion 172.

[0036] The brake pedal 120 is supported by the large diameter portion 173 of the shaft member 170 at a position adjacent to the auxiliary shift lever 110. The accelerator pedal 130 is supported by the large diameter portion 173 of the shaft member 170 at a position adjacent to the brake pedal 120. The main shift lever 140 is supported by the small diameter portion 175 of the shaft member 170 at a position adjacent to the accelerator pedal 130 and the first support member 150.

[0037] The length of the large diameter portion 173 in the Y direction is greater than the sum of the length of the base portion 111 of the auxiliary shift lever 110 in the Y direction, the length of the cylindrical portion 121 of the brake pedal 120 in the Y direction, and the length of the cylindrical portion 131 of the accelerator pedal 130 in the Y direction. Therefore, the auxiliary shift lever 110, the brake pedal 120, and the accelerator pedal 130 are slightly movable in the Y direction in a state supported by the large diameter portion 173 (shaft member 170). In the state shown in FIG. 5, a gap is formed between the cylindrical portion 131 and the base portion 141, and the auxiliary shift lever 110, the brake pedal 120, and the accelerator pedal 130 are movable in the Y direction by the size of this gap. This prevents the auxiliary shift lever 110, the brake pedal 120, and the accelerator pedal 130 from pressing against each other in the Y direction.

[0038] Also, a coned disc spring 183 (elastic body) is disposed between the main shift lever 140 and the nut 181. For example, a washer 185 is disposed between the main shift lever 140 and the first support member 150, and the washer 185 and a plurality of coned disc springs 183 are disposed between the first support member 150 and the nut 181. In the illustrated example, twelve coned disc springs 183 are stacked so that the orientation of every three springs is changed. The step portion 174 is urged toward the first support member 150 by the urging force of an elastic body such as the coned disc spring 183. As a result, the main shift lever 140 is sandwiched between the step portion 174 and the first support member 150. The force with which the main shift lever 140 is sandwiched is adjusted by the degree of tightening of the nut 181.

[0039] In one example, when assembling the operation unit 100, first, the second end 172 of the shaft member 170 is inserted into the through hole 166 of the second support member 160 via the washer 185, and the nut 182 is fastened to the second end 172. Next, the auxiliary shift lever 110, the brake pedal 120, and the accelerator pedal 130 are supported in order by the large diameter portion 173, and the main shift lever 140, the nut 85, the first support member 150, the nut 85, and the multiple disc springs 183 are supported in order by the small diameter portion 175 (first end 171), and the nut 181 is fastened to the first end 171.

[0040] As described above, one example of a ride-on management machine comprises a running body 2, a first support member 150 fixed to the running body 2, a second support member 160 fixed to the running body 2 at a distance from the first support member 150, one shaft member 170 supported by the first support member 150 and the second support member 160, and at least one pedal and at least one lever rotatably supported on the shaft member 170 for operating the running operation of the running body 2.

[0041] In the above riding management machine, at least one pedal and at least one lever are supported by the same shaft member 170, so that the number of shaft members can be reduced and an increase in the number of parts can be suppressed. In addition, the pedal and lever are unitized with the first support member 150 and the second support member 160 to form an operation unit, so that the work efficiency of attachment to the traveling body 2 can be improved.

[0042] The shaft member 170 may include a large diameter portion 173 having a large diameter and a small diameter portion 175 having a smaller diameter than the large diameter portion 173. At least one lever may be sandwiched between a step portion 174 provided at the boundary between the large diameter portion 173 and the small diameter portion 175 and the first support member 150. In this case, the step portion 174 may be biased toward the first support member 150 by the biasing force of the disc spring 183. In such a configuration, the user needs to rotate the lever against the frictional force generated by the clamping. This allows the user to feel an appropriate weight when rotating the lever, and provides a good usability.

[0043] The at least one pedal may include a plurality of pedals (in one example, the brake pedal 120 and the accelerator pedal 130) rotatably supported on the shaft member 170 so as to be movable in the axial direction of the shaft member 170. In this configuration, the brake pedal 120 and the accelerator pedal 130 are prevented from pressing against each other in the axial direction, and therefore, the brake pedal 120 and the accelerator pedal 130 are prevented from rotating together.

[0044] The shaft member 170 may have a first end 171 and a second end 172 formed in a bolt shape. The first support member 150 may have a through hole 155a through which the first end 171 is inserted. The first end 171 may be fixed to the first support member 150 by a nut 181 in a state in which it is inserted into the through hole 155a. The second support member 160 may have a through hole 166 formed so that the rotation of the shaft member 170 is restricted by inserting the second end 172 therethrough. The second end 172 may be fixed to the second support member 160 by a nut 182 in a state in which it is inserted into the through hole 166. In this configuration, the rotation of the shaft member 170 is restricted by fastening the nut 182 to the second end 172 in a state in which the second end 172 is inserted into the through hole 166. Therefore, when the assembly work is performed in order from the second end portion 172 side, rotation of the shaft member 170 caused by the fastening of the nut 181 is suppressed, and the assembly work can be performed favorably.

[0045] Although the present disclosure has been specifically described based on the embodiments thereof, the present disclosure is not limited to the above embodiments.

[0046] For example, a self-propelled boom sprayer for pest control has been given as an example of a ride-on management machine, but the same concept as the operating unit disclosed herein may also be applied to a self-propelled ride-on management machine that performs weeding, fertilization, trenching, etc.

[0047] Furthermore, although the disc spring 183 has been exemplified as the elastic body, for example, a coil spring may be used instead of the disc spring.

[0048] An embodiment of the present disclosure can be shown as follows. [1] A running body (2), A first support member (150) fixed to the traveling body (2); a second support member (160) fixed to the traveling body (2) at a distance from the first support member (150); a shaft member (170) supported by the first support member (150) and the second support member (160); A riding management machine comprising at least one pedal and at least one lever rotatably supported on the shaft member (170) for controlling the traveling operation of the traveling body (2). [2] The shaft member (170) includes a large diameter portion (173) and a small diameter portion (175) having a diameter smaller than that of the large diameter portion (173), The at least one lever is clamped between a step portion (174) provided at the boundary between the large diameter portion (173) and the small diameter portion (175) and the first support member (150). [3] The riding management machine according to [2], wherein the step portion (174) is biased toward the first support member (150) by a biasing force of an elastic body (183). [4] The at least one pedal includes a plurality of pedals rotatably supported on the shaft member (170) so as to be movable in the axial direction of the shaft member (170). [5] The shaft member (170) has a first end (171) and a second end (172) formed in a bolt shape, The first support member (150) has a first through hole (155a) through which the first end portion (171) is inserted, the first end portion (171) is inserted into the first through hole (155a) and fixed to the first support member (150) by a first nut (181), the second support member (160) has a second through hole (166) formed so that the second end (172) is inserted therethrough to restrict rotation of the shaft member (170), The riding management machine described in any of [1] to [4], wherein the second end (172) is inserted into the second through hole (166) and fixed to the second support member (160) by a second nut (182). [Explanation of symbols]

[0049] 1... boom sprayer (ride-on management machine), 2... traveling body, 4... vehicle frame, 100... operation unit, 110... auxiliary shift lever, 120... brake pedal, 130... accelerator pedal, 140... main shift lever, 150... first support member, 160... second support member, 170... shaft member.

Claims

1. A running body (2), A first support member (150) fixed to the traveling body (2); A second support member (160) fixed to the traveling body (2) at a distance from the first support member (150); A shaft member (170) supported by the first support member (150) and the second support member (160); A riding management machine comprising at least one pedal and at least one lever rotatably supported on the shaft member (170) for controlling the traveling operation of the traveling body (2).

2. The shaft member (170) includes a large diameter portion (173) and a small diameter portion (175) having a diameter smaller than that of the large diameter portion (173), The riding management machine of claim 1, wherein the at least one lever is sandwiched between a step portion (174) provided at the boundary between the large diameter portion (173) and the small diameter portion (175) and the first support member (150).

3. The riding management machine according to claim 2, wherein the step portion (174) is biased toward the first support member (150) by a biasing force of an elastic body (183).

4. The riding management machine according to claim 1 , wherein the at least one pedal includes a plurality of pedals rotatably supported on the shaft member (170) so as to be movable in the axial direction of the shaft member (170).

5. The shaft member (170) has a first end (171) and a second end (172) formed in a bolt shape, The first support member (150) has a first through hole (155a) through which the first end (171) is inserted, The first end (171) is fixed to the first support member (150) by a first nut (181) while being inserted into the first through hole (155a), The second support member (160) has a second through hole (166) formed so that the second end (172) is inserted therethrough to restrict rotation of the shaft member (170), The riding management machine of claim 1, wherein the second end (172) is fixed to the second support member (160) by a second nut (182) while being inserted into the second through hole (166).

6. An operation unit attached to the traveling machine body (2), A first support member (150) and a second support member (160) fixed to the traveling body (2); A shaft member (170) supported by the first support member (150) and the second support member (160); An operation unit that is rotatably supported on the shaft member (170) and includes at least one pedal and at least one lever for operating the traveling operation of the traveling body (2).

Images