JP5013298B2 - Agricultural transporter - Google Patents

Description

  The present invention relates to an agricultural transport vehicle, and more particularly, to a self-propelled agricultural transport vehicle capable of checking the rotation of a forward / reverse switching lever while traveling.

  An agricultural transport vehicle has a loading platform attached to a vehicle body, and is used for transporting harvested items, farm tools, and the like in a field. Agricultural transport vehicles include a self-propelled vehicle that is self-propelled by mounting an engine on a vehicle body and driving crawlers disposed on the left and right sides of the vehicle by power from the engine.

  A self-propelled agricultural transport vehicle is provided with a forward / reverse switching lever for switching the forward / backward movement. This forward / reverse switching lever can be rotated between a forward position where the agricultural transport vehicle is advanced and a reverse position where the agricultural transport vehicle is moved backward, and the operator corresponds to the direction in which the agricultural transport vehicle is desired to travel. The forward / reverse switching lever is positioned at the forward position or the reverse position.

  Here, when an operator accidentally operates the forward / reverse switching lever while traveling on an agricultural transport vehicle, the gear in the transmission that transmits power from the engine to the crawler may be incompletely meshed or damaged. is there. In addition, there is a concern that sudden changes in the direction of travel may cause danger to the worker himself or cause the load to collapse. In view of such a situation, in Patent Document 1, the forward / reverse switching lever is urged to a forward position or a reverse position by attaching a coil spring, and the forward / backward switch lever rotates from the forward position or the reverse position. There has been disclosed a small transport vehicle that restrains this.

JP 09-142166 A

  However, in the small transport vehicle disclosed in Patent Document 1, the forward / reverse switching lever is biased to the forward movement position or the reverse movement position, but even if the operator is traveling, the operator can exert a force against the biasing force. By adding to the advance switching lever, the forward / reverse switching lever can be rotated. Therefore, the small transport vehicle still has a possibility that the meshing of the gear in the transmission may be incompletely broken or damaged, may cause danger to the operator himself, and may cause a load collapse. is there.

  The present invention has been made in view of the above problems, and an object of the present invention is to provide an agricultural transport vehicle that can restrain an operator from operating a forward / reverse switching lever while traveling.

In order to achieve the above object, the agricultural transport vehicle according to claim 1 is an agricultural transport vehicle that is self-propelled by transmitting rotational force to a crawler disposed on the left and right of the vehicle body by a transmission, A clutch lever that is rotatable within a range of a permission position that allows transmission of rotational force from the transmission to the crawler and a prohibited position that prohibits transmission; a forward position that uses the rotational force as forward rotational force; A forward / reverse switching lever that can be rotated within the range of a reverse position where the rotational force is a reverse rotational force, and the clutch lever are connected, and when the clutch lever is in the permitted position, the forward or reverse position is reached. A claw that restrains the rotation of the forward / reverse switching lever is inserted into the recess of the forward / reverse switching lever, and when the clutch lever rotates to the prohibited position, Serial and safety link to retract the pawl from the recess of the forward-reverse switching lever, which is fixed to the fixed portion of the provided mounting plate at a predetermined distance from said lever pivot axis is the fulcrum of the forward-reverse switching lever A liner, movably disposed in the liner, one end connected to a wire tip rotation shaft of the forward / reverse switching lever, and a wire biased by a spring on the other end, The switching lever has a forbidden area that prohibits the insertion of the pawl while rotating between the forward position and the reverse position, so that the other end of the wire is connected regardless of the position of the clutch lever. By urging to the side, a forward position side or a specific position where the wire tip rotation shaft is located on a linear extension line connecting the fixed portion and the lever rotation shaft. When located at the backward position side, and characterized in that it is held rotated in the forward position or reverse position.

  In the agricultural transport vehicle according to the first aspect, when the clutch lever is in the permission position, the safety link claw is inserted into the forward / reverse switching lever positioned at the forward movement position or the reverse movement position. The movement is restrained. Therefore, in this agricultural transport vehicle, it is possible to prevent the forward / reverse switching lever from being erroneously rotated while the operator is traveling. Further, when the clutch lever is pivoted to the prohibited position, the safety link pawl is automatically retracted from the forward / reverse switching lever, so that the forward / reverse switching lever can be pivoted. Therefore, this agricultural transporter does not impair workability.

The agricultural transport vehicle according to claim 1 has a prohibited area in which the forward / reverse switching lever prohibits the safety link claw from entering, so the forward / reverse switching lever rotates between the forward position and the reverse position. During the movement, the rotation is not restrained regardless of the position of the clutch lever. The forward / reverse switching lever rotates to the forward or reverse position because the wire having one end connected to the wire tip rotation shaft of the forward / reverse switching lever is biased toward the other end. As described above, in the agricultural transport vehicle, it is not necessary for the operator to repeat the operation of the forward / reverse switching lever until the gears in the transmission are normally engaged, thereby eliminating the operator's troublesomeness.

The perspective view of the agricultural transport vehicle of embodiment of this invention. The side view when a clutch lever is a permission position and a forward / reverse switching lever is a specific position. The side view when the clutch lever is in the permitted position and the forward / reverse switching lever is in the forward position. The side view when the clutch lever is in the prohibited position and the forward / reverse switching lever is in the forward position. FIG. 4 is a side view when the clutch lever is in the permitted position and the forward / reverse switching lever is in the reverse position. The side view when the clutch lever is in the prohibited position and the forward / reverse switching lever is in the reverse position. The side view when the clutch lever is in the prohibited position and the forward / reverse switching lever is in the specific position. FIG. 4 is a perspective view of the vicinity of the clutch lever, where (A) the clutch lever is in the permitted position and (B) the clutch lever is in the prohibited position. Plane explanatory drawing of a transmission at the time of making a shift lever into a forward rotation position. The plane explanatory view of a transmission at the time of making a shift lever into a reverse rotation position.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings. The agricultural transport vehicle 1 of the present invention is used in a field or the like, and as shown in FIG. 1, a loading platform 3 on which a harvested product, farm tools, etc. are mounted is disposed in front of a vehicle body 2. The agricultural transport vehicle 1 has an engine 4 and a transmission 5 mounted on the rear side of the vehicle body 2. The crawlers 6 and 7 attached to the left and right of the vehicle body 2 are converted by the transmission 5 from the engine 4. It is a self-propelled type that is self-propelled by rotating. The agricultural transport vehicle 1 is a vehicle in which an operator stands behind the vehicle body 2 and walks. The agricultural transport vehicle 1 includes a handle 8 for the operator to hold by hand, and a transmission. A clutch lever 9 for operating a clutch (not shown) disposed between 5 and the crawlers 6 and 7 and a forward / reverse switching lever 10 for switching the traveling direction of the agricultural transport vehicle 1 are also attached. Yes.

  As shown in FIG. 2, the forward / reverse switching lever 10 is pivotally attached to a lever pivot shaft 12 provided on a support base 11 attached to the vehicle body 2. The range between the forward position 10a for moving the vehicle 1 forward and the reverse position 10b for moving backward can be rotated. The forward / reverse switching lever 10 includes a main body portion 13 bent in a substantially S shape in side view and a handle portion 14 made of a resin material or the like attached to the tip of the main body portion 13. The main body 13 is pivotably mounted about the lever pivot shaft 12 in the vicinity of one end of a substantially S-shape. Further, a forward stopper recess 15a, a reverse stopper recess 15b, and an arc guide 15c therebetween are provided on the inner side of the S-shape of the main body 13 so as to be in contact with the stopper 15 provided on the support base 11. It has been. As shown in FIGS. 3 and 4, the forward stopper recess 15a abuts against the stopper 15 when the forward / reverse switching lever 10 is positioned at the forward movement position 10a, so that the forward / backward switching lever 10 exceeds the forward movement position 10a. Prevents turning. Similarly, as shown in FIGS. 5 and 6, the reverse stopper recess 15b abuts against the stopper 15 when the forward / reverse switching lever 10 is positioned at the reverse position 10b, so that the forward / reverse switching lever 10 is moved to the reverse position 10b. Prevents turning beyond.

  Further, a forward recessed portion 18a and a backward recessed portion 18b into which a claw 18 included in the safety link 17 can be inserted are provided on the outer side of the S-shape of the main body 13, and the forward recessed portion 18a and the backward recessed portion 18b are provided. A forbidden area 18c for prohibiting the intrusion of the claw 18 is provided between the recess 18b. As shown in FIGS. 3 and 4, the forward recess 18a opens in the reverse direction when the forward / reverse switching lever 10 is located at the forward position 10a. At this time, as shown in FIG. 3, if the clutch lever 9 is positioned at the permission position 9a, the forward recess 18a rotates together with the clutch lever 9 that protrudes toward the main body 13 side. A claw 18 included in the safety link 17 is inserted. Thereby, the forward / reverse switching lever 10 is prevented from rotating. As shown in FIGS. 5 and 6, the reverse recess 18b is opened in the reverse direction when the forward / reverse switching lever 10 is located at the reverse position 10b. At this time, as shown in FIG. 5, if the clutch lever 9 is positioned at the permission position 9a, the claw 18 that protrudes toward the main body 13 is inserted into the reverse recess 18b. Thereby, the forward / reverse switching lever 10 is prevented from rotating. The forbidden area 18c is an arcuate guide provided between the forward recess 18a and the reverse recess 18b. As shown in FIGS. 2 and 7, the forward / reverse switching lever 10 moves backward from the forward position 10a. It is located on the reverse direction side while rotating between the positions 10b. As a result, as shown in FIG. 2, the claw 18, which is in a state of protruding toward the main body 13 due to the clutch lever 9 being positioned at the permission position 9 a, comes into contact with the forbidden region 18 c to the main body 13. Insertion is prevented. As a result, the forward / reverse switching lever 10 can be rotated.

  Near the center of the forward / reverse switching lever 10, there is provided a wire tip turning shaft 20 to which one end 19a of the wire 19 is rotatably connected. The wire 19 is urged toward the other end 19 b by a tension spring 21 shown in FIG. 9 described later, and is held movably in the liner 22. The liner 22 is for avoiding the occurrence of an obstacle such as the wire 19 being caught by an obstacle. As shown in FIG. 2, the vehicle body is located at a predetermined distance from the lever rotating shaft 12 as shown in FIG. 2 is fixed to a fixing portion 23a of a mounting plate 23 provided on the base plate 2. The forward / reverse switching lever 10 is configured such that the wire 19 rotates on the extension line 24a of the straight line 24 connecting the lever rotating shaft 12 and the fixing portion 23a by the wire 19 being biased toward the other end 19b shown in FIG. By being positioned closer to the forward movement position 10a than the specific position 10c where the moving shaft 20 is located, it is automatically rotated and held at the forward movement position 10a, and is automatically rotated to the reverse movement position 10b by being positioned on the reverse movement position 10b side. Move and hold. At this time, since the forbidden area 18c described above prevents the claw 18 of the safety link 17 from being inserted into the main body 13 of the forward / reverse switching lever 10, the forward / reverse switching is performed regardless of the position of the clutch lever 9. The lever 10 is rotated.

  Since one end 19a of the wire 19 is rotatably attached to the wire tip rotation shaft 20, when the forward / reverse switching lever 10 is rotated in the range from the forward position 10a to the reverse position 10b. The wire 19 is prevented from being bent. Further, the wire 19 is configured based on the fact that the main body portion 13 is configured so that the distance between the wire tip rotation shaft 20 and the fixing portion 23a is changed by rotating the forward / reverse switching lever 10. 5, when the forward / reverse switching lever 10 shown in FIG. 6 is set to the reverse position 10b, the forward / backward switching lever 10 shown in FIGS. 3 and 4 is moved toward the one end 19a as compared with the forward movement position 10a. 10, the length pulled out from the other end 22b of the liner 22 is shortened.

  As shown in FIG. 2, the clutch lever 9 is provided so as to protrude from the support base 11, and is configured to be rotatable within a range of a permission position 9a and a prohibition position 9b. The clutch lever 9 has one end of one clutch wire 26 movably held in the liner 25 shown in FIGS. 9 and 10 and one end of the other clutch wire 28 movably held in the liner 27. And are connected. The other end of the one clutch wire 26 is connected to a clutch (not shown) disposed between the transmission 5 and the crawler 6, and the other end of the other clutch wire 28 is connected to the transmission 5 and the crawler. 7 and a clutch (not shown) disposed between the two. Thereby, as shown in FIGS. 2, 3, 5, and 8A, when the clutch lever 9 is positioned at the permission position 9a, the transmission 5 and the crawlers 6 and 7 are connected to the clutch. The transmission is allowed to be transmitted from the transmission 5 to the crawlers 6 and 7.

  Further, as shown in FIGS. 4, 6, 7, and 8B, the clutch lever 9 is positioned at the forbidden position 9b, and when the clutch wires 26, 28 are pulled to one end side, The transmission 5 and the crawlers 6 and 7 are disconnected from the clutch, and the transmission of the rotational force from the transmission 5 to the crawlers 6 and 7 is prohibited, so that the so-called clutch is disengaged.

  As shown in FIG. 8, the safety link 17 is rotatably fixed with a shaft 16 provided on the support base 11 as a fulcrum, and extends at a right angle from the shaft 16, and the rotating arm 17a. The rotating arm 17b extends in parallel with a predetermined interval, and the rotating arm 17a and the connecting portion 17c that connects the distal ends of the rotating arm 17b. The rotating arm 17a is provided with a claw 18 for insertion into the main body 13 of the forward / reverse switching lever 10 projecting at a right angle from the rotating arm 17a, and a long hole 29 is provided in the rotating arm 17b. A rivet 30 attached to the clutch lever 9 is inserted into the long hole portion 29 so as to be movable within the range. As a result, the safety link 17 rotates about the shaft 16 as a fulcrum as the clutch lever 9 rotates.

  The safety link 17 pivots downward when the clutch lever 9 is pivoted from the permission position 9a to the prohibition position 9b, as shown in FIGS. 4, 6, 7 and 8B. 18 is retracted from the main body 13 of the forward / reverse switching lever 10. Thereby, the forward / reverse switching lever 10 can be freely rotated within the range between the forward position 10a and the reverse position 10b. Further, the safety link 17 rotates upward when the clutch lever 9 is rotated from the prohibition position 9b to the permission position 9a, and the claw 18 protrudes toward the main body 13 side of the forward / reverse switching lever 10.

  At this time, if the forward / reverse switching lever 10 is between the forward movement position 10a and the reverse movement position 10b, the safety link 17 has a claw 18 as shown in FIG. Is not inserted into the main body 13 and enables the forward / reverse switching lever 10 to rotate. On the other hand, if the forward / reverse switching lever 10 is located at the forward movement position 10a or the reverse movement position 10b, the safety link 17 is a main body that opens in the backward movement direction as shown in FIG. 3, FIG. 8 (A) or FIG. The claw 18 is inserted into the forward recess 18a or the reverse recess 18b of the portion 13 to restrain the forward / reverse switching lever 10 from rotating.

  As shown in FIGS. 9 and 10, the transmission 5 is provided with a shift lever 31 that is a rotating shaft. The transmission 5 positions the shift lever 31 at the forward rotation position 32a, thereby changing the meshing of a gear (not shown) in the transmission 5 so that the power from the engine 4 is advanced in the direction in which the agricultural transport vehicle 1 is advanced. It is converted into a rotational force that drives the crawlers 6 and 7, and is positioned at the reverse rotation position 32b, so that the meshing of a gear (not shown) in the transmission 5 is similarly changed and the power from the engine 4 is transported for agriculture. It is converted into a rotational force that drives the crawlers 6 and 7 in the direction of moving the vehicle 1 backward.

  A change head 33 that is a rotating arm is fixed to the shift lever 31, and the change head 33 is configured to be rotatable together with the shift lever 31. Hereinafter, the change head 33 and the shift lever 31 are collectively referred to as a shift unit 32.

  The shift portion 32 is provided with an attachment shaft 35 for attaching one end 21a of the tension spring 21 at a position close to the shift lever 31 side from the tip 34 thereof. The other end 21b of the tension spring 21 is provided in the vehicle body 2 and is attached to an attachment shaft 36 provided outside the forward rotation position 32a. The shift portion 32 is urged to rotate to the forward rotation position 32a. When the forward / reverse switching lever 10 is held at the forward movement position 10a, it is held at the forward rotation position 32a.

  In addition, the other end 19b of the wire 19 is connected to the tip end 34 via a tension spring (second tension spring) 37, and the wire 19 is connected to the shift portion 32 described above at one end 21a. Is biased toward the other end 19b by the biasing force of the tension spring 21 to which is attached. Note that the tension spring 37 is excessive when the wire 19 is at the specific position 10c for pulling the wire 19 to the one end 19a side as compared with the case where the forward / reverse switching lever 10 is located at the reverse position 10b. This is intended to absorb a large pulling force by stretching, prevent an excessive force from acting on the wire 19 and the shift portion 32, and prevent the failure.

  In the agricultural transport vehicle 1 described above, as shown in FIG. 3, when the clutch lever 9 is set to the permitted position 9a and the forward / reverse switching lever 10 is set to the forward position 10a, the claw 18 of the safety link 17 is It is inserted into the forward recess 18 a of the part 13. Thereby, the forward / reverse switching lever 10 is prevented from rotating. At this time, as shown in FIG. 9, the shift portion 32 is held at the forward rotation position 32 a by the urging force of the tension spring 21. As a result, the transmission 5 transmits the rotational force in the direction of moving the agricultural transport vehicle 1 forward to the crawler 6 and the crawler 7 via the clutch (not shown), so that the agricultural transport vehicle 1 is self-propelled in the forward direction. To do.

  Next, when switching from the state where the agricultural transport vehicle 1 is self-propelled in the forward direction to the self-propelled direction in the reverse direction, first, an unillustrated worker turns the clutch lever 9 shown in FIG. By moving it to the prohibited position 9b, the clutch cancels the connection between the transmission 5 and the crawlers 6 and 7. Further, as the clutch lever 9 is rotated, the safety link 17 rotates downward with the shaft 16 as a fulcrum and retracts the claw 18 from the forward recess 18 a of the main body 13. Accordingly, since the forward / reverse switching lever 10 can be rotated, as shown in FIG. 6, when the operator rotates the forward / reverse switching lever 10 from the forward position 10a to the reverse position 10b, the forward / backward movement is performed. The switching lever 10 is held at the reverse movement position 10b by the urging force of the tension spring 21 toward the other end 19b of the wire 19. At this time, the length by which the wire 19 is drawn from the one end 22a of the liner 22 to the one end 19a side is longer than that when the forward / reverse switching lever 10 is set to the forward position 10a (FIGS. 3 and 4). Thus, as shown in FIG. 10, the length of the other end 19b of the wire 19 drawn out from the other end 22b of the liner 22 is longer than that when the forward / reverse switching lever 10 is set to the forward position 10a (FIG. 9). Shorter.

  In the above, based on the fact that the spring constant of the tension spring 37 is larger than that of the tension spring 21, the tension spring 21 is extended and the shift portion 32 is rotated and held to the reverse rotation position 32b. In this state, as shown in FIG. 5, the worker rotates the clutch lever 9 to the permission position 9 a, so that the clutch connects the transmission 5 and the crawlers 6 and 7. As a result, the transmission 5 transmits the rotational force in the direction in which the agricultural transport vehicle 1 is moved backward to the crawler 6 and the crawler 7 via the clutch (not shown), so that the agricultural transport vehicle 1 is traveling in the reverse direction. To do. At this time, as the clutch lever 9 is rotated, the safety link 17 is rotated upward with the shaft 16 as a fulcrum, and the claw 18 is inserted into the reverse recess 18 b for the main body 13. As a result, the forward / reverse switching lever 10 is prevented from rotating.

  In addition, when switching from the state where the agricultural transport vehicle 1 is self-propelled in the backward direction to the self-propelled direction in the forward direction, first, an unillustrated worker, as shown in FIG. Is turned to the forbidden position 9b, whereby the clutch cancels the connection between the transmission 5 and the crawlers 6 and 7. As the clutch lever 9 is rotated, the safety link 17 is rotated downward with the shaft 16 as a fulcrum, and the claw 18 is retracted from the reverse recess 18 b for the main body 13. As a result, the forward / reverse switching lever 10 can be rotated. Therefore, when the operator rotates the forward / reverse switching lever 10 from the reverse position 10b to the forward position 10a as shown in FIG. The switching lever 10 is held at the forward movement position 10 a by the urging force of the tension spring 21 toward the other end 19 b of the wire 19. At this time, the length by which the wire 19 is pulled out from the one end 22a of the liner 22 to the one end 19a side is shorter than when the forward / reverse switching lever 10 is set to the reverse position 10b (FIGS. 5 and 6). As a result, as shown in FIG. 9, the length of the other end 19b of the wire 19 drawn from the other end 22b of the liner 22 is longer than that when the forward / reverse switching lever 10 is set to the reverse position 10b (FIG. 10). become longer.

  In the above, the tension spring 21 is contracted and the shift portion 32 is rotated and held to the forward rotation position 32a. In this state, as shown in FIG. 3, the operator rotates the clutch lever 9 to the permission position 9 a, so that the clutch connects the transmission 5 and the crawlers 6 and 7. As a result, the transmission 5 transmits the rotational force in the direction of moving the agricultural transport vehicle 1 forward to the crawler 6 and the crawler 7 via the clutch (not shown), so that the agricultural transport vehicle 1 is self-propelled in the forward direction. To do. At this time, the safety link 17 rotates upward with the shaft 16 as a fulcrum as the clutch lever 9 is rotated, and the claw 18 is inserted into the forward recess 18 a of the main body 13. As a result, the forward / reverse switching lever 10 is prevented from rotating.

  As described above, in the agricultural transport vehicle 1, the latch lever 9 is located at the permission position 9a, the clutch connects the transmission 5 and the crawlers 6 and 7, and the forward / reverse switching lever 10 is at the forward position. 10a or reverse position 10b, the claw 18 is inserted into the forward recess 18a or the reverse recess 18b provided in the main body 13 of the forward / reverse switching lever 10, and the forward / reverse switching lever 10 is turned. The safety link 17 which checks movement is provided. Therefore, in the agricultural transport vehicle 1, it is possible to prevent the forward / reverse switching lever 10 from being erroneously rotated while the operator is traveling.

  Further, when the clutch lever 9 is positioned at the prohibition position 9b and the clutch releases the connection between the transmission 5 and the crawlers 6 and 7, the pawl 18 of the safety link 17 is automatically retracted from the main body 13. Therefore, the forward / reverse switching lever 10 can be turned. Therefore, workability is not impaired in the agricultural transport vehicle 1.

  Further, regardless of the position of the clutch lever 9, when the forward / reverse switching lever 10 is between the forward movement position 10a and the reverse movement position 10b, the rotation of the forward / backward switching lever 10 is not restrained. Accordingly, the forward / reverse switching lever 10 is configured such that the forward / reverse switching lever 10 is moved forward or backward by the wire 19 having one end 19a connected to the forward / reverse switching lever 10 being biased toward the other end 19b. Rotate to position 10b. As a result, in the agricultural transport vehicle 1, it is not necessary for the operator to repeat the operation of the forward / reverse switching lever 10 until the gears in the transmission 5 are properly engaged, thereby eliminating the operator's troublesomeness.

  The configuration of the agricultural transport vehicle 1 shown in the present embodiment is only one aspect of the agricultural transport vehicle according to the present invention, and various modifications can be made without departing from the gist of the present invention. .

The agricultural transport vehicle according to the present invention can be used as a transport vehicle in a field.

DESCRIPTION OF SYMBOLS 1 Agricultural cart 5 Transmission 6, 7 Crawler 9 Clutch lever 9a Permitted position 9b Prohibited position 10 Forward / reverse switching lever 10a Forward position 10b Reverse position 10c Specific position 12 Lever rotation fulcrum lever rotation shaft 17 Safety link 18 Claw 19 Wire 19a, 22a One end 19b The other end 20 Wire tip rotation shaft 22 Liner 23 Mounting plate

Claims (1)

An agricultural transporter that is self-propelled by transmitting rotational force to a crawler disposed on the left and right of the vehicle body by a transmission,
A clutch lever that is rotatable within a range of a permission position that permits transmission of rotational force from the transmission to the crawler and a prohibition position that prohibits the transmission;
A forward / reverse switching lever rotatable within a range of a forward position where the rotational force is a forward rotational force and a reverse position where the rotational force is a backward rotational force;
Inserted into the recess of the forward / reverse switching lever is connected to the clutch lever, and when the clutch lever is in the permitted position, the pawl for checking the rotation of the forward / reverse switching lever in the forward position or reverse position is inserted, A safety link that pivots together when the clutch lever pivots to the prohibited position and retracts the pawl from the recess of the forward / reverse switching lever;
A liner fixed to a fixing portion of a mounting plate provided at a predetermined distance from the lever rotation shaft, which is a fulcrum of the forward / reverse switching lever;
A wire that is movably disposed in the liner, has one end connected to a wire tip rotation shaft of the forward / reverse switching lever, and a wire biased by a spring on the other end side;
The forward / reverse switching lever has a forbidden area for prohibiting insertion of the pawl that is rotating between a forward position and a reverse position, so that the forward / reverse switching lever is independent of the position of the clutch lever. Is positioned on the forward position side or the reverse position side with respect to a specific position where the wire tip pivot shaft is positioned on a straight line connecting the fixed portion and the lever pivot shaft. Agricultural transport vehicle characterized by being rotated and held at a forward position or a reverse position when it is done .

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