JP2014050332A - Mobile agricultural machine - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a mobile agricultural machine which prevents the mobile agricultural machine from starting operation while a stand is in a standing posture by a simple constitution.SOLUTION: A stand lever 29 is placed along side of a guide panel 30, and a rod member 33 is attached to a main clutch/brake lever 32 guided by a guide groove 31 of the guide panel 30. When the main clutch/brake lever 32 moves from a parking position to a clutch disengaging position, the rod member 33 abuts on the stand lever 29, and the stand lever 29 interlocks in such a manner that a stand switches from a standing posture to a stored posture.

Description

  The present invention relates to a mobile farm machine such as a tiller, and more particularly to an operating tool for a stand of the machine body.

  Conventionally, for example, in a mobile farm machine such as a field cultivator, a stand can be maintained in front of a machine body supported by a pair of wheels to maintain a standing posture, and an operator can remotely move the stand by an operation tool disposed in the vicinity of the handle. One that operates and raises and lowers the stand is known. This type of cultivator is, for example, one that operates the stand up and down freely by a forward / reverse motor (see Patent Document 1), or the stand is in a standing posture position so that the stand does not travel backward while in the standing posture. There has been known one (see Patent Document 2) provided with a checker that prevents the shift lever from shifting to the reverse portion of the guide groove. In addition, it is devised that the driving clutch (main clutch), the brake, and the stand are linked so that they can be operated with one operating tool, and the driving state, the driving non-driving state, and the stopping state are revealed. (See Patent Document 3).

Japanese Utility Model Publication No. 7-14803 Japanese Patent Laid-Open No. 9-2215 Japanese Utility Model Publication No. 54-180530

  However, the ones described in Patent Documents 1 and 2 are such that when the operator performs a tilling work or the like, the stand is inadvertently connected to the traveling clutch while the stand is in an upright posture, and the stand tries to move forward. There is a possibility that the stand may be damaged by being stuck. Moreover, the thing of patent document 3 had the problem that a structure became complicated in order to connect a driving clutch, a brake, and a stand, and the cost increased.

  Therefore, an object of the present invention is to provide a mobile agricultural machine that is configured to interfere with a stand lever when a traveling clutch (main clutch) is connected, thereby solving the above-described problems.

The main clutch that connects and disconnects the power from the engine (9) is turned on and off, and the main clutch / brake lever (32) that switches the parking brake to the on / off state, and the body (7) are supported in a undulating manner. A mobile agricultural machine (1) comprising a stand (23),
The main clutch / brake lever (32), a parking position where the main clutch is disengaged and the parking brake is activated, a clutch disengaged position where the main clutch is disengaged and the parking brake is inactive, A guide groove (31) that guides to a clutch engaged position in which the main clutch is in an engaged state and the parking brake is in an inoperative state and has a bent portion (31a) between the parking position and the clutch disengaged position. A guide panel (30);
A stand lever (29) arranged side by side with the guide panel (30) for switching the stand (23) between a standing posture and a storage posture;
A rod member (33) fixed to the main clutch / brake lever (32) and extending in the direction of the stand lever (29);
When the main clutch / brake lever (32) moves from the parking position to the clutch disengaged position, the bar member (33) contacts the stand lever (29), and the stand lever (29) The stand (23) is interlocked so as to switch from the standing posture to the storage posture.
It is characterized by that.

The main clutch that connects and disconnects the power from the engine (9) is turned on and off, and the main clutch / brake lever (32) that switches the parking brake to the on / off state, and the body (7) are supported in a undulating manner. A mobile agricultural machine (1) comprising a stand (23),
The main clutch / brake lever (32), a parking position where the main clutch is disengaged and the parking brake is activated, a clutch disengaged position where the main clutch is disengaged and the parking brake is inactive, A guide groove (31) that guides to a clutch engaged position in which the main clutch is in an engaged state and the parking brake is in an inoperative state and has a bent portion (31a) between the parking position and the clutch disengaged position. A guide panel (30);
A stand lever (29) arranged side by side with the guide panel (30) for switching the stand (23) between a standing posture and a storage posture;
A stopper (35) fixed to the main clutch / brake lever (32) and extending in the direction of the stand lever (29),
When the main clutch / brake lever (32) moves from the parking position to the clutch disengaged position, the stopper (35) interferes with the stand lever (29), and the movement is restrained.
It is characterized by that.

  According to the first aspect of the present invention, when the main clutch / brake lever is moved from the parking position to the clutch disengaged position, the stand lever is interlocked so that the stand is in the stowed posture. The airframe does not start in the standing posture, the forgetting to store the stand is lost, and the storing operation of the stand is facilitated. In addition, since the stand lever is arranged side by side with the guide panel, visibility and workability can be improved.

  According to the present invention of claim 2, when the main clutch / brake lever moves from the parking position to the clutch disengaged position, the stopper interferes with the stand lever and the movement is restrained. The operator can detect that the stand has been forgotten before starting work. In addition, since the stand lever is arranged side by side with the guide panel, visibility and workability can be improved.

1 is an overall side view showing a field cultivator according to an embodiment of the present invention. It is a figure which shows the attachment structure of the stand, Comprising: (a) is a top view, (b) is a side view, (c) is an enlarged view which shows the AA cross section of (b). It is a schematic diagram which shows the main clutch and brake lever and stand lever which concern on embodiment of this invention, Comprising: (a) is a top view, (b) is a partial rear view, (c) is a side view. It is a schematic diagram which shows the main clutch and brake lever and stand lever which concern on other embodiment of this invention, Comprising: (a) is a top view, (b) is a partial rear view, (c) is a side view.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings. The direction in the following description is based on the worker who is working with the tiller.

  As shown in FIG. 1, a cultivator 1 that is a mobile agricultural machine has a rotary cultivator 3 disposed behind a traveling unit 2, and the traveling unit 2 and the rotary cultivator 3 are integrally configured. The traveling unit 2 is supported by a pair of left and right traveling wheels 6 that are driving wheels via an axle 5, and an engine 9 and a speed change mechanism are provided on a body frame (airframe) 7 supported by the traveling wheels 6. A mission case 10 and a fuel tank 11 are mounted. A belt transmission mechanism 12 that transmits the power of the engine 9 to the transmission case 10 is disposed on the left side surface of the traveling unit 2, and the belt transmission mechanism 12 relaxes the transmission belt by a tension arm or It has a main clutch mechanism (not shown) that connects and disconnects power from the engine to the mission input shaft by tensioning.

  On the other hand, the rotary tiller 3 includes a rotary shaft 13 extending in the left-right direction from the mission case 10 and a rotary claw 15 fixed to the rotary shaft 13 to cultivate a farm field. Are mounted around the rotary shaft 13 and rotate together. A rotary cover 16 is fixed to the airframe frame 7 and arranged above the rotary claw 15, and a tail wheel device 17 that is supported at the rear of the rotary cover 16 so as to be movable up and down to set the tilling depth. And a rear cover 19 for leveling the farm field.

  Further, a handle frame 20 protrudes from the upper rear end of the traveling unit 2, and a handle 21 having a loop shape in a plan view for operating the traveling direction of the traveling unit 2 from the handle frame 20 rotates up and down. It is extended freely.

  As shown in FIG. 2, the body frame 7 is formed so as to have a space in the center in the left-right direction, and has a pivot shaft 22 erected in the left-right direction at the front portion of the body frame 7. Yes. A stand 23 is attached to the pivot shaft 22 so that it can be raised and lowered in the front-rear direction with the pivot shaft 22 as a fulcrum. A bracket 25 having a U-shaped portion 25a is attached to the stand 23. The shaft 26 is pivotally mounted on the U-shaped portion 25a. A spring 27 is hooked between the shaft 26 and the body frame 7, and a stand lever 29 is connected to one end of the shaft 26, and the stand lever 29 is pushed and pulled to operate the stand 23 is configured to be selectively switchable and maintainable between a standing posture (solid line in FIG. 2) and a storage posture (two-dot chain line in FIG. 2). In the present embodiment, a link mechanism (not shown) is provided at the attachment portion of the stand lever 29, and the stand 23 is stowed from an upright position when the stand lever 29 is pushed forward via the link mechanism. It is configured to switch to a posture and switch from a stowed posture to a standing posture when pulled backward. The stand lever 29 extends to the vicinity of the guide panel 30 disposed in the vicinity of the hand portion 21a of the handle 21, and one end on the hand portion 21a side is bent to have a grip portion 29a. (See FIG. 1).

  As shown in FIG. 3, the guide panel 30 includes a guide groove 31. The guide groove 31 has a U-shaped bent portion 31a and a straight portion extending forward from one end of the bent portion 31a. 31b, and these are formed continuously. A main clutch / brake lever 32 is provided in the guide groove 31 so as to be pivotable back and forth and to the left and right. The main clutch / brake lever 32 is connected to a tension of the main clutch mechanism via a connecting wire (not shown). It is connected to a parking brake (not shown) that applies a braking force to the arm and the traveling transmission system, and can be switched between on / off of the main clutch mechanism and operation / non-operation of the parking brake. More specifically, when the main clutch / brake lever 32 is positioned on the other end side of the bent portion 31a of the guide groove 31, the parking position where the main clutch is disengaged and the parking brake is activated, the bent The clutch is disengaged when the main clutch is disengaged and the parking brake is inoperative when positioned on the other end side of the portion 31a, and the main clutch is disengaged and parked when positioned on the opposite side of the bent portion 31a of the linear portion 31b. It is configured to be in the clutch engagement position where the brake is activated.

  The main clutch / brake lever 32 has a bar member 33 projecting from one side in the left-right direction (right side in the present embodiment) below the guide panel 30, and the bar member 33 is connected to the stand lever 29. Is disposed adjacent to the grip portion 29a. When the main clutch / brake lever 32 is guided to the bent portion (right side in FIG. 3) of the bent portion 31a, the bar member 33 moves to a position facing the grip portion 29a of the stand lever 29 in the front-rear direction. When the main clutch / brake lever 32 is guided to the end of the bent portion 31a (left side in FIG. 3), it does not face the grip 29a of the stand lever 29 and does not interfere with it. Further, the stand lever 29 is in a standing posture in the front-rear direction at substantially the same position as the parking position, and the stand 23 is in a stowed position at substantially the clutch disengaged position.

  Since the present embodiment is configured as described above, the cultivator 1 is normally set to the parking position of the main clutch / brake lever 32 and the standing position of the stand 23 during parking. When the operator starts the tilling work, the stand 23 is placed in the retracted position, and the main clutch / brake lever 32 is switched from the parking position to the clutch disengaged position and further to the clutch engaged position.

  Here, when the main clutch / brake lever 32 is guided to the bent portion 31a of the guide groove 31 from the parking position to the clutch disengagement position, first, the main clutch / brake lever 32 is moved rightward (direction A in FIG. 3). Moving. Then, the bar member 33 fixed to the main clutch / brake lever 32 also moves to the right, and when the operator forgets to set the stand 23 in the stowed position and remains in the standing position, the bar member 33 moves to the stand lever. It opposes 29 holding parts 29a. Next, the main clutch / brake lever 32 is moved in the forward direction (direction B in FIG. 3), but the bar member 33 comes into contact with the grip portion 29a of the stand lever 29 and presses the grip portion 29a in the movement. The stand lever 29 is interlocked so as to switch from the standing posture of the stand 23 to the storage posture. This eliminates the need for the operator to directly operate the stand lever 29 to switch the stand 23 from the upright position to the stowed position when the operator starts the tilling work, forgetting to stow the stand 23 and storing the stand. Operation can be facilitated.

  Next, the main clutch / brake lever 32 is moved leftward (direction C in FIG. 3) and guided to the clutch disengagement position, but the bar member 33 does not face the grip 29a of the stand lever 29, and the bar member 33 Will not interfere with the stand lever 29. Then, the main clutch / brake lever 32 is moved in the forward direction (D direction in FIG. 3), set to the clutch engagement position, and the traveling unit 2 is moved forward and backward to perform the tilling work.

  Next, other embodiments will be described, but portions overlapping those of the previous embodiments are denoted by the same reference numerals and description thereof is omitted.

  The cultivator 1 to which this embodiment can be applied does not include the link mechanism in the mounting portion of the stand lever 29 described in the previous embodiment, and the stand 23 is operated by pushing the stand lever 29 forward. The stand 23 is configured to switch from the stowed position to the stowed position by switching from the stowed position to the standing position and pulling backward.

  As shown in FIG. 4, the main clutch / brake lever 32 has a stopper 35 protruding from one side in the left-right direction (right side in the present embodiment) below the guide panel 30. When the main clutch / brake lever 32 is in the parking position, the main clutch / brake lever 32 comes into contact with the grip portion 29a of the stand lever 29 (the position indicated by the solid line in FIG. 4) with the stand 23 in the standing posture, and its movement is restrained. In addition, when the stand lever 29 is set so that the stand 23 is in the stowed position (the two-dot chain line position in FIG. 4), the stopper 35 does not interfere with the grip portion 29 a of the stand lever 29. .

  Since the present embodiment is configured as described above, the cultivator 1 is normally set to the parking position of the main clutch / brake lever 32 and the standing position of the stand 23 during parking. Then, when starting the work of the cultivator 1, the operator switches the main clutch / brake lever 32 from the parking position to the clutch disengaged position and then to the clutch engaged position with the stand 23 in the stowed position.

  Here, when the main clutch / brake lever 32 is moved from the parking position to the clutch disengagement position, the main clutch / brake lever 32 is first moved rightward (direction E in FIG. 4) along the bent portion 31a. At this time, if the operator forgets to set the stand 23 in the stowed posture and remains in the standing posture, the stopper 35 interferes with the grip portion 29a of the stand lever 29 and the movement of the main clutch / brake lever 32 is restrained. . Thereby, the worker can detect that the stand is forgotten to be stored before the work starts.

  When the operator pulls the stand lever 29 so that the stand 23 is in the stowed posture, the stopper 35 does not interfere with the grip portion 29a, and the movement of the main clutch / brake lever 32 is not restrained. It is possible to move to the entry position.

  The stopper 35 may not contact the grip portion 29a when the main clutch / brake lever 32 is in the parking position. When the main clutch / brake lever 32 is moved from the parking position to the clutch disengaged position, If the movement of the main clutch / brake lever 32 is restrained by interfering with the stand lever 29 having the stand 23 in the standing posture, the distance between the stopper 35 in the parking position and the grip portion 29a may be increased.

  In the present embodiment, the cultivator has been described. However, the present invention is not limited to this, and the cultivator may be applied to any mobile agricultural machine such as a management machine.

1 Mobile agricultural machine (cultivator)
7 Airframe (airframe)
9 Engine 23 Stand 29 Stand lever 30 Guide panel 31 Guide groove 31a Bending portion 32 Main clutch / brake lever 33 Bar member 35 Stopper

Claims (2)

In a mobile agricultural machine equipped with a main clutch / brake lever for switching the power supply from the engine to the on / off state, and switching the parking brake to an inactive state, and a stand supported in a undulating manner in front of the aircraft ,
The main clutch / brake lever includes a parking position where the main clutch is disengaged and the parking brake is activated, a clutch disengaged position where the main clutch is disengaged and the parking brake is not activated, and the main clutch is A guide panel having a guide groove that is guided to a clutch engaged position in an on state and in which the parking brake is in an inactive state, and has a bent portion between the parking position and the clutch disengaged position;
A stand lever arranged side by side on the guide panel to switch the stand between a standing posture and a storage posture;
A bar member fixed to the main clutch / brake lever and extending in the direction of the stand lever,
When the main clutch / brake lever moves from the parking position to the clutch disengaged position, the bar member comes into contact with the stand lever so that the stand lever switches from the standing position to the stowed position. In conjunction with
A mobile agricultural machine characterized by that. In a mobile agricultural machine equipped with a main clutch / brake lever for switching the power supply from the engine to the on / off state, and switching the parking brake to an inactive state, and a stand supported in a undulating manner in front of the aircraft ,
The main clutch / brake lever includes a parking position where the main clutch is disengaged and the parking brake is activated, a clutch disengaged position where the main clutch is disengaged and the parking brake is not activated, and the main clutch is A guide panel having a guide groove that is guided to a clutch engaged position in an on state and in which the parking brake is in an inactive state, and has a bent portion between the parking position and the clutch disengaged position;
A stand lever arranged side by side on the guide panel to switch the stand between a standing posture and a storage posture;
A stopper fixed to the main clutch / brake lever and extending in the direction of the stand lever,
When the main clutch / brake lever moves from the parking position to the clutch disengaged position, the stopper interferes with the stand lever, and the movement is restrained.
A mobile agricultural machine characterized by that.

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