JP2007168586A - Moving agricultural machine - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a moving agricultural machine which can condact the stop operation of an engine effectively in case of emergency, and which is formed to conduct stop operation quickly and accurately. <P>SOLUTION: A stop button 28 and a differential lock lever 24 are installed in an operation panel 16. The stop button 28 is arranged in a steering 18c side in the operation panel 16 and roughly in the middle of a machine body 12. The differential lever lock 24 is arranged in the machine body 12 side in the operation panel 16, and in one side (right side as viewed from the machine body 12 rear) of the machine body 12. Thereby, an operator can operate the stop button 28 quickly and accurately, so that safety and operability can be improved. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to a mobile farm machine such as a tiller, and more particularly to a mobile farm machine that an operator operates while walking a moving machine.

  In general, a mobile farm machine such as a field cultivator is known in which a clutch lever linked to a clutch for connecting and disconnecting power is configured to be in a connected position by gripping it integrally with a steering handle. In such a field cultivator, the main speed change lever and the diff lock lever are arranged on the panel attached to the rear end of the steering handle having a loop shape in plan view extending rearward of the machine body, and the clutch lever is in the “disengaged” position. In some cases, a cultivator has been proposed that is configured to make it difficult to operate the main transmission lever and the diff lock lever, and to prevent them from being erroneously operated (see Patent Document 1).

JP 2000-34003 A

  However, in the mobile agricultural machine as described in Patent Document 1, the main transmission lever and the differential lock lever are arranged on the panel attached to the rear end of the steering handle, and the accelerator lever is arranged in the vicinity thereof. However, the operation means for stopping the engine drive itself is not arranged on the panel, and there is a lack of consideration regarding the response when the engine is immediately stopped in an emergency.

  Therefore, the present invention has an object to provide a mobile agricultural machine that can effectively stop an engine in an emergency and is configured to perform the stop operation quickly and accurately, thereby solving the above-described problems. is there.

The present invention according to claim 1 (see, for example, FIG. 1 to FIG. 6) has a grip portion (18c) provided at the rear end of the handle frame (18), and the power of the engine (13) in the fuselage (12). In the mobile farming machine (1) that performs farming while transmitting to the drive wheel (11) via the transmission and the differential (5),
On the handle frame (18), a stop switch (28) for forcibly stopping the engine (13) in a driving state and a differential lock device for regulating the differential of the differential device (5) are operated and inactivated. An operation support base (16) having a differential lock operation member (24) for switching to a state;
The stop switch (28) is arranged on the gripping part (18c) side of the operation support base (16) and closer to the center of the machine body (12), and the differential lock operation member (24) is provided for the operation support. It is arranged on the side of the machine body (12) in the base (16) and closer to one side of the machine body (12).
It exists in the mobile agricultural machine (1) characterized by this.

According to a second aspect of the present invention (see, for example, FIGS. 4 and 5), the handle frame (18) includes a throttle lever (27) for controlling the output of the engine (13),
The operation support base (16) is provided with a notch (37) that secures an arrangement space for the rotation base at a portion facing the rotation base of the throttle lever (27).
It exists in the mobile agricultural machine (1) of Claim 1.

  Note that the reference numerals in the parentheses are for comparison with the drawings, but this is for convenience to facilitate understanding of the invention and has no influence on the description of the claims. It is not a thing.

  According to the first aspect of the present invention, the stop switch is provided on the operation support base, and further, the stop switch is disposed on the grip portion side of the operation support base and closer to the center of the machine body. When a situation arises, the engine can be stopped immediately by operating the stop switch, and the stop switch is arranged near the gripping part gripped by the operator so that the operator can quickly and accurately Can be operated. In addition, since the diff lock operation member is arranged on the airframe side of the operation support base and closer to one side of the airframe, the diff lock operation member can be operated even when the operator operates the stop switch in an emergency. Can be prevented from being erroneously operated by being positioned farther than the stop switch, and the operability of the stop switch in an emergency can be improved.

  According to the second aspect of the present invention, the operation support base includes the notch portion that secures the space for disposing the rotation base portion at a portion facing the rotation base portion of the throttle lever, and the throttle lever is provided in the notch portion. Since the throttle lever is arranged on the handle frame so as to be side by side with the stop switch on the operation support base, the throttle lever, the stop switch, and the differential lock operation member are integrated as a whole. It can be placed in the area.

  Hereinafter, embodiments according to the present invention will be described with reference to the drawings. 1 is a side view of a field cultivator to which the mobile agricultural machine according to the present invention can be applied, FIG. 2 is a perspective view of the field cultivator as viewed obliquely from the rear, FIG. 3 is a front view of the field cultivator, and FIG. FIG. 5 is an enlarged view of the operation panel 16, and FIG. 5A is an enlarged view of the panel surface 16b as viewed obliquely from the rear. ) Is a plan view of the operation panel 16, FIG. 6 is an enlarged view of the operation panel 16, (a) is a left side view of the operation panel 16, (b) is a right side view of the operation panel 16, and (c). FIG. 5 is an enlarged view of the rear surface of the panel surface when viewed obliquely from below.

  As shown in FIG. 1 thru | or FIG. 3, the tiller (mobile agricultural machine) 1 is comprised integrally with the traveling part 10 and the tilling part 30. As shown in FIG. In the traveling unit 10, an engine 13 and a transmission transmission unit (not shown) are disposed on an airframe 12 supported by a pair of traveling wheels (drive wheels) 11 on the left and right sides, and a fuel tank 14 is supported on the engine 13. ing. Further, a shift lever 17 for shifting the shift transmission unit and a handle frame 18 for operating the traveling direction of the fuselage 12 are disposed at the rear of the fuselage 12.

  The cultivating unit 30 includes a cultivating shaft 31 that is rotatably supported by the machine body 12, a cultivating claw 32 that is fixed to the cultivating shaft 31 and cultivates a farm field, and a cultivating cover 33 that covers the top of the cultivating claw 32. The tillage claw 32 is rotationally driven by the output of the engine 13 that is transmitted through the speed change transmission unit.

  The fuselage 12 includes a tank cover 20 that covers the fuel tank 14 so that an upper portion including the fuel filler port is partially exposed, a guide groove 21 that guides the operation path of the shift lever 17, and a muffler that performs decompression and silencing of the exhaust of the engine 13. A shift guide panel 23 having an exhaust slit 22 formed on the side (not shown) and a muffler cover 25 covering the muffler are disposed. A differential device (differential) 5 is disposed between the left and right traveling wheels 11 under the machine body 12 (see FIG. 3).

  The rear end portion 20a of the tank cover 20 and the front end portion 23a of the transmission guide panel 23 facing each other are formed so as to be substantially continuous with each other when viewed from above and behind the airframe 12. Further, the lower end portion 20b of the side surface of the tank cover 20 and the upper surface 25a of the muffler cover 25 facing each other are formed so as to be along each other in a side view, and the side end portion 23b of the transmission guide panel 23 facing each other. And the rear end 25b of the muffler cover 25 are also formed along each other.

  On the other hand, the handle frame 18 is inclined horizontally upward from the rear part of the machine body 12 toward the rear, and is bent from the middle of the inclined part 18a so as to be substantially parallel to the farm scene F (see FIG. 1). A horizontal portion 18b and a handle (gripping portion) 18c formed at the rearmost end of the horizontal portion 18b are provided. The handle 18c is formed in a long shape extending in the left-right width direction in the rear view so that the operator can hold it with one or both hands.

  In addition, a clutch handle 29 supported so as to be able to come into contact with and separate from the handle 18c is disposed at a transition portion from the inclined portion 18a to the horizontal portion 18b. The clutch handle 29 is a so-called lap opening from a horizontal position that overlaps the upper portion of the handle 18c (position where the clutch is engaged) to a position where it rises at an angle of about 60 ° with respect to the handle 18c (position where the clutch is disengaged). It is supported so that it can rotate in the direction of arrow A in FIG.

  Further, a differential lock that is rotated along a lever groove 19 extending in the front-rear direction of the machine body 12 is provided on the right side of the handle frame 18 at the transition portion (for example, the left side of FIG. 3 and the upper side of FIG. 4). An operation panel (operation support base) 16 on which a lever (diff lock operation member) 24, a start switch 26, and a stop button (stop switch) 28 are arranged is attached. A throttle lever 27 for adjusting and controlling the output of the engine 13 is disposed at a position facing an end of the operation panel 16 (more specifically, a notch 37 described later) in the transition portion of the handle frame 18. .

  The differential lock lever 24 switches the differential device 5 (see FIG. 3) between the operating state and the non-operating state, and when one of the traveling wheels 11 slips in a place where the driving force is not easily transmitted, it becomes difficult to travel. The left and right traveling wheels 11 and 11 are directly connected (that is, the differential drive by the left and right traveling wheels 11 and 11 is locked) so that the driving force is transmitted well to the farm scene F (see FIG. 1). The differential lock lever 24 is disposed on the side of the machine body 12 on the operation panel 16 and closer to one side of the machine body 12 (right side when the machine body 12 is viewed from the rear).

  The start switch 26 is a switch for starting the engine 13 that is stopped by a linkage operation with the stop button 28. The start switch 26 is on the handle 18 c side of the operation panel 16 and on one side of the body 12 than the stop button 28. It is located near the right side when viewed from the back.

  The stop button 28 is arranged on the handle 18c side of the operation panel 16 and closer to the center of the fuselage 12 than the start switch 26 (that is, closer to the center line C in FIGS. 3 and 4), and the clutch handle 29 is connected. In addition, the engine 13 functions so as to be forcibly stopped unconditionally by being pushed down regardless of the operation state of either the disconnected state or the disconnected state. By disposing the stop button 28 as described above, the position of the stop button 28 is very close to the operator who operates behind the handle 18c, and when it is urgent, the operator can quickly operate the stop button 28. .

  The stop button 28 functions so as to maintain an engine lock state in which the engine 13 cannot be started even if the start switch 26 is operated when the stop button 28 is kept pressed and rotated clockwise by a predetermined angle. To do. That is, the stop button 28 forcibly stops the driving of the engine 13 according to the pressing operation, and a stop / start position where the engine 13 can be started when the start switch 26 is operated from the stop state, It is configured to be switchable to a lock position that locks and disables the operation of the start switch 26 when it is pushed in one direction (clockwise direction in FIG. 4) from the stop / start position.

  When the differential lock lever 24, the stop button 28, etc. are arranged on the operation panel 16 as described above, the differential lock lever 24 is farther from the operator operating behind the handle 18c in the cultivator 1 than the stop button 28. Will be placed at the position. As a result, even when the operator tries to depress the stop button 28, it is possible to prevent the differential lock lever 24 from being erroneously operated due to the momentum or the like at that time. The differential lock lever 24 is disposed at the position as described above, not only when the stop button 28 is operated, but also when the throttle lever 27 and the like are accidentally touched during normal operation. Of course, it is possible to prevent the operation of the.

  As shown in FIGS. 5A and 5B and FIGS. 6A to 6C, the operation panel 16 has a substantially “he” shape when viewed from the side. A panel surface 16a having a shape along the inclined portion 18a of the handle frame 18 is formed at the front portion, and a panel surface 16b having a shape along the horizontal portion 18b of the handle frame 18 is formed at the rear portion. Thus, when the operation panel 16 is disposed on the handle frame 18, the operation panel 16 is attached along the bend of the handle frame 18 as a whole.

  The operation panel 16 has a lever groove 19 formed so as to penetrate the front and back along the longitudinal direction of the panel surface 16a at the center of the panel surface 16a. A notch 36 is formed in the upper portion. Further, a through hole 34 for projecting the stop button 28 upward is formed on the panel surface 16b on the handle 18c side of the operation panel 16 and closer to the center of the fuselage 12, and the start switch 26 projects upward. The hole 35 is formed on the operation panel 16 on the handle 18c side and closer to one side of the machine body 12 (right side when viewed from the rear of the machine body 12). Further, the panel surface 16b is formed with a notch 37 that secures a space for disposing the rotation base at a portion facing the rotation base of the throttle lever 27.

  When working with the field cultivator 1 having the above-described configuration, the operator confirms that the stop button 28 is at the stop / start position, and presses the start switch 26 to start the engine 13. Then, the operator appropriately operates the speed change lever 17 while operating the handle 18c, drives the traveling wheel 11 while rotating the tillage claw 32, and moves the tiller 1 that travels at a low speed on the field to the rear of the tiller 1. Farming while holding in.

  During such work, for example, when a situation occurs in which the engine 13 has to be stopped urgently, for example, a foreign object is caught in the tillage claw 32, the operator presses a stop button 28 provided on the operation panel 16. The engine 13 can be stopped by pressing the button. The stop button 28 is formed on the handle 18c side of the operation panel 16 and closer to the center of the machine body 12, and is close to the operator and extremely easy to operate. As a result, the operator can quickly stop the engine 13 by quickly operating the stop button 28, and the operability and safety of the tiller 1 can be improved.

  Further, a differential lock lever 24 is disposed on the operation panel 16, and the lever 24 is disposed on the side of the machine body 12 and on the right side of the machine body 12, that is, at a position farther from the operator than the stop button 28. Further, erroneous operation when the stop button 28 is pressed is suppressed, and the stop operation of the engine 13 in an emergency is not hindered. Note that the pressing operation of the stop button 28 as described above causes the engine 13 to be immediately and forcibly stopped regardless of whether the clutch handle 29 is connected or disconnected.

  As described above, according to the present embodiment, the stop button 28 is provided on the operation panel 16 and further disposed on the handle 18c side of the operation panel 16 and closer to the center of the machine body 12, so that the traveling is stopped urgently. When a situation that must be made occurs, the engine 13 can be immediately stopped by operating the stop button 28, and the stop button 28 is disposed in the vicinity of the handle 18c gripped by the operator. The operator can operate this quickly and accurately. In addition, since the differential lock lever 24 is arranged on the side of the machine body 12 on the operation panel 16 and closer to one side of the machine body 12 (right side when viewed from the rear of the machine body 12), the operator hits the stop button 28 in an emergency. Even when the operation is performed, it is possible to prevent erroneous operation due to the differential lock lever 24 being located farther from the stop button 28, and to improve the operability of the stop button 28 in an emergency. Can do.

  Further, the operation panel 16 includes a notch portion 37 that secures a space for disposing the rotation base portion at a portion facing the rotation base portion of the throttle lever 27, and the throttle lever 27 is provided in the notch portion 37. The throttle lever 27 is disposed on the handle frame 18 so as to be side by side with the stop button 28 on the operation panel 16, and the throttle lever 27, the stop button 28, and the differential lock lever 24 are integrated as a whole. It becomes possible to arrange in the area.

It is a side view of the field cultivator which can apply the mobile agricultural machine concerning the present invention. It is the perspective view which looked at the cultivator from diagonally backward. It is a front view of a cultivator. It is the top view drawn centering on the part of the cultivating part and handle frame of a cultivator. An operation panel is enlarged and shown, (a) is a figure which expands and shows a panel surface seeing from the slanting back, and (b) is a top view of an operation panel. An enlarged operation panel is shown, (a) is a left side view of the operation panel, (b) is a right side view of the operation panel, and (c) is an enlarged view of the rear surface of the panel surface as viewed from obliquely below. FIG.

Explanation of symbols

1 Mobile agricultural machine (cultivator)
5 Differential 11 Drive wheel (traveling wheel)
12 Airframe 13 Engine 16 Operation support stand (operation panel)
18 Handle frame 18c Grasping part (handle)
24 Differential lock operating member (Differential lock lever)
27 Throttle lever 28 Stop switch (stop button)
37 Notch

Claims (2)

In a mobile farming machine that has a grip portion provided at the rear end of the handle frame and transmits the power of the engine in the machine body to the drive wheel via the transmission and the differential, while moving the farm,
A stop switch for forcibly stopping the engine in a driven state on the handle frame, and a differential lock operation member for switching a differential lock device for regulating differential of the differential device between an operating state and a non-operating state. Provided with an operation support stand,
The stop switch is disposed on the gripping portion side of the operation support base and near the center of the machine body, and the differential lock operation member is disposed on the machine body side of the operation support base and near the airframe side. Become,
A mobile agricultural machine characterized by that. The handle frame includes a throttle lever for controlling the output of the engine,
The operation support base includes a notch portion that secures an arrangement space for the rotation base portion at a portion facing the rotation base portion of the throttle lever.
The mobile agricultural machine according to claim 1.

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