JP2006081456A - Handle for lifting machine body in tiller - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To firmly attach a handle for lifting a tiller body in a tiller to the tiller body side. <P>SOLUTION: The handle 31 that has a base end side arranged between the engine 9 of a tilling transmission case 1 and a tilling device 6, is extended through the upper side of the tilling device 6 to a front position and lifts the tiller body is protrusively installed above the tilling device 6 ahead the tiller body, in which drive power is transmitted from the engine 9 through the tilling transmission case 1 to the tilling device. A bracket 22 for supporting a front rise and fall wheel 23 for setting tilling depth is linked and fixed to the front edge side of the handle 31 for lifting the tiller body. Otherwise, the handle 31 for lifting the tiller body is equipped with a cover 26 for covering the upper part of the tilling device 6. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to a handle for lifting a machine body in a cultivator such as a walking management machine.

A tiller that is provided with a rotary that is a tillage device in front, a tillage transmission case that transmits driving force from the engine to the rotary, and protrudes above the rotary to a handle for lifting the fuselage has become known. (For example, refer to Patent Document 1).
JP-A-10-225205

  The tiller is provided with a pair of left and right plates to which a rotary cover that covers the top of the rotary is attached. The handle is attached to the plate. For this reason, there was a fault that attachment of a handle cannot be said to be firm.

  The handle for lifting the fuselage in the tiller of the present invention for solving the above problems is provided with a tilling device 6 in front, a tilling transmission case 1 for transmitting driving force from the engine 9 to the tilling device 6, and a tilling device. In the cultivator provided with the handle 31 for lifting the machine body protruding above 9, the handle 31 is attached between the engine 9 of the tillage transmission case 1 and the tillage device 6 on the base end side. The first feature is that it extends to the front position through the top of the tillage device 6.

  Secondly, a bracket 22 for supporting the front lifting wheel 23 for setting the tilling depth is provided on the front side of the tillage transmission case 1, the bracket 22 is projected upward, and a handle for lifting the bracket 22 and the airframe is provided. The front end side of 31 is connected and fixed.

  Third, a cover 26 that covers the top of the tillage device 6 is attached to a handle 31 for lifting the fuselage.

  According to the structure of the present invention configured as described above, since the handle for lifting the aircraft is stably supported by the tillage transmission case, the operator can stably lift the aircraft. is there. At this time, there is an advantage that the handle is firmly attached to the tillage transmission case side by connecting and fixing the bracket supporting the front lifting wheel and the front end side of the handle.

  By attaching the cover that covers the top of the tillage device to the handle for lifting the fuselage, the handle can also be used as a frame for the cover, reducing costs, and the handle for attaching the cover is a frame. There is an effect that it is carried out firmly on the side of the power transmission case through the.

  1, 2, and 3 are a side perspective view, a plan perspective view, and a front perspective view of a walking type management machine that is a field cultivator to which the present invention is applied. The mission case 1 constitutes the fuselage frame. Wheels 4 are supported on the lower rear left and right sides of the mission case 1 via axles 2, and rotary 6 that is a tilling device for tillage is supported on the lower front side.

  An engine 9 is mounted in the recess 7 at the top of the mission case 1 via an engine base 8. The engine 9 is disposed above the axle 2 so that the center of gravity is located behind the intermediate position between the rotary shaft 3 and the axle 4. The upper part of the engine 9 is covered with a bonnet 10.

  The transmission case 1 includes a transmission including a travel transmission mechanism that shifts the travel drive force for the wheels 4 and a rotary transmission mechanism that shifts the rotary drive force for the rotary 6. A driving force is transmitted from an output shaft 12 of the engine 9 to an input shaft 11 of the transmission through a main clutch including a tension clutch.

  As the main clutch is engaged, a driving force is transmitted from the engine 9 to the transmission, and the wheels 4 and the rotary 6 are rotationally driven. The mission case 1 serves as a traveling transmission case that transmits driving force from the engine 9 to the wheels 4 and a tillage transmission case that transmits driving force from the engine 9 to the rotary 6.

  A pair of left and right brackets 17L and 17R are bolted to the rear of the mission case 1 obliquely upward. The rear ends of both brackets 17L, 17R are located behind the engine 9, and the pipes 15 extending from both brackets 17L, 17R are integrally fixed to the rear ends of the brackets 17L, 17R. At both ends of the pipe 15, the inner sides of the left and right flange portions 18 </ b> L and 18 </ b> R of the handle 18 that are substantially U-shaped in a plan view and protrude obliquely rearward and upward are attached.

  The pipe 15 has a knob so that the end of the left and right flanges 18L and 18R of the handle 18 is abutted against the end of the pipe 15 so as to come out from the outside of the one flange 18R to the outside of the other flange 18L. Attached bolt 20 is inserted. A nut 25 is screwed to the end of the bolt 20 on the flange 18L side.

  By tightening the bolt 20, the inner sides of the left and right flange portions 18 </ b> L and 18 </ b> R of the handle 18 are pressed toward the end surface of the pipe 15, and the handle 18 is fixed to the pipe 15 by frictional force. A chrysanthemum seat is interposed between the end surface of the pipe 15 and the inside of the end portions of the left and right flanges 18L, 18R, and serves as a detent (prevents rotation) when the handle 18 is fixed.

  By loosening the bolt 20, the pressure on the end surface of the pipe 15 inside the ends of the left and right flanges 18L, 18R of the handle 18 is released, and the handle 18 is moved against the brackets 17L, 17R with the bolt 20 as a rotation fulcrum. It can be rotated.

  The left and right flange portions 18L and 18R of the handle 18 are bent toward the inner side in a plan view in the middle of reaching the base end side (the end portion side attached to the pipe 15). The bent ends are attached to the left and right end faces of the pipe 15 as described above. For this reason, the distance between the left and right brackets 17L, 17R is narrow, the length of the pipe 15 is short, the attachment portion of the handle 18 to the machine body is narrow and compact, and the inconvenience such as interference with the left and right wheels 4 is caused. It is prevented.

  The handle 18 is provided with a swingable clutch operating portion 19 for operating on / off of the main clutch. The driving of the wheel 4 and the rotary 6 can be turned on and off by the clutch operation unit 19.

  From the mission case 1, a main operation lever 21 that operates to drive and shift the wheels 4 and the rotary 6 protrudes rearward. The main operation lever 21 protrudes rearward through a guide hole 30 a provided in the guide panel 30. The guide panel 30 is attached to both brackets 17L and 17R.

  The main operation lever 21 can be swung back and forth and left and right along the guide hole 30a. The running speed, the driving speed of the rotary 6 and the rotational direction are changed by the swing operation of the main transmission lever 21.

  At the position between the engine 9 and the rotary 6 in the transmission case 1, both base end portions of a bowl-shaped lifting handle 31 having a substantially inverted U shape in plan view are fixed. Specifically, as shown in FIGS. 4 (a) and 4 (b), the front end sides of the left and right collar portions 31 </ b> L and 31 </ b> R of the handle 31 are connected to bosses 1 a projecting on both sides of the transmission case 1 via bolts 35. Is fixed.

  The lifting handle 31 extends forward of the machine body so as to detour above the rotary 6. An operator can easily lift the aircraft by using the pipe 15 as a rear handle and the lifting handle 31 as a front handle.

  A bracket 22 is bolted to the front end portion of the mission case 1. An arm 24 is pivotally supported on the bracket 22 so as to swing up and down. A front elevating wheel 23 is pivotally supported at the tip end side of the arm 24 so as to be freely rotatable. A left and right channel frame 32 is integrally fixed to the upper end portion of the bracket 22 by welding or the like.

  As shown in FIGS. 4A and 4B, the left and right flange portions 31L and 31R of the lifting handle 31 are integrally fixed to the left and right end portions of the channel frame 32 by welding or the like. As a result, the bracket 22 and the lifting handle 31 are integrally fixed, and both the bracket 22 and the lifting handle 31 are fixed to the transmission case 1 stably and firmly. Since the lifting handle 31 is firmly fixed to the body side, the lifting operation of the body can be easily and stably performed.

  The upper part of the rotary 6 is covered with a cover 26. The front end side of the cover 26 is integrally fixed to the upper surface side of the channel frame 32 by bolts 36 and nuts 37. A hook portion 38 having a U-shaped cross section on the left and right is integrally formed on the inner surface side of the cover 26. The hook portion 38 is fitted into the left and right flange portions 31L and 31R of the handle 31.

  As described above, the cover 26 is attached to the lifting handle 31 side directly or via the channel frame 32, and the lifting handle 31 is a frame of the cover 26. As a result, the lifting handle 31 also serves as the frame of the cover 26, thereby reducing the cost. Since the lifting handle 31 is firmly fixed to the transmission case 1 as described above, the cover 26 using the lifting handle 31 as a frame is also firmly and stably attached to the transmission case 1 side.

  The walking type management machine is configured as described above, and the wheel 4 is grounded, and the operator holds the handle 18, operates the engine 9, enters the main clutch, and operates the rear wheel 4. The machine body travels by driving and the tillage work is performed by the rotary 6 that rotates as the machine body travels.

  The aircraft travels while the wheel 4 and the front lifting wheel 23 are in contact with the ground. Since the positional relationship between the wheel 4 and the rotary 6 is fixed, the tillage depth is determined by the amount of the rotary 6 protruding downward from the straight line E connecting the ground point of the wheel 4 and the ground point of the front lifting wheel 23. Therefore, the tilling depth is set and adjusted by swinging the arm 24 and setting the height position of the front lifting wheel 23.

  Further, as shown in FIG. 1, by setting the height position of the front elevating wheel 23 so that the rotary 6 does not protrude below the straight line E connecting the grounding point of the wheel 4 and the grounding point of the front elevating wheel 23. The body can be easily moved by the wheel 4 and the front lifting wheel 23 without touching the rotary 6 to the ground.

  As described above, the handle 18 can be rotated back and forth using the bolt 20 as a rotation fulcrum. The handle 18 can be switched to a lying posture S surrounding the outside of the engine 9 by turning forward. That is, the left and right flange portions 18L and 18R of the handle 18 have a wider interval than the width of the engine 9 in a portion overlapping the engine 9 in a side view when the handle 18 is in the lying posture S. Bending is started from a portion corresponding to.

  The handle 18 forms a loop portion 18A by a portion having a space wider than the width of the engine 9 of both the left and right flange portions 18L, 18R and a connecting flange portion 18C that connects the both flange portions 18L, 18R. The handle 18 surrounds the outside of the engine 9 in the lying posture S by the loop portion 18A. From the bending start portion to the end portion of the left and right flange portions 18L, 18R form a steeply inclined portion 18B from the bolt 20 (attachment rotation fulcrum portion on the machine body side). It can be said that the loop portion 18A is formed via the steeply inclined portion 18B.

  The handle 18 forms a loop portion 18 </ b> A so that the connecting collar 18 </ b> C is positioned behind the front end position of the rotary 6 and the front end position of the lifting handle 31 in the lying posture S. Accordingly, there is no inconvenience that the handle 18 protrudes forward of the aircraft and the overall length of the aircraft becomes long when the handle 18 is in the lying posture S.

  And since the handle | steering-wheel 18 rotates by using the volt | bolt 20 inserted in the pipe 15 as a fulcrum, the handle 18 does not exist above the pipe 15 used as a rear handle by using the lying down posture S. Further, the connecting collar portion 18 </ b> C is positioned behind the front end position of the lifting handle 31 during the lying posture S. As a result, the handle 18 is stored between the front and rear handles (the pipe 15 and the lifting handle 31) in the lying posture S.

  For this reason, when lifting the aircraft, the pipe 15 that is the rear handle can be easily grasped, and the handle 18 in the lying posture S is not prevented from gripping the lifting handle 31 that is the front handle. As a result, the operator can easily grasp the both-hands and can easily lift the aircraft.

  Further, since the rotation fulcrum of the handle 18 is located behind the engine 9 and at an upper position behind the mission case 1, when the handle 18 is in the lying down posture S, the handle 18 is more than the mission case 1. There is no inconvenience of being located above and interfering with the mission case 1.

  Since the steeply inclined portion 18B of the handle 18 is located behind the engine 9, the handle 18 does not interfere with the engine 9 when the handle 18 is rotated. As described above, when the handle 18 is folded and rotated, the handle 18 does not interfere with the engine 9 and the transmission case 1, and the operator can easily and smoothly handle the handle 18 without being aware of the interference with the engine 9 and the transmission case 1. Can be rotated.

It is a side perspective view of a walk type management machine. It is a plane perspective view of a walk type management machine. It is a front perspective view of a walk type management machine. (A) is a side view of a cover part, (b) is a front view of a cover part.

Explanation of symbols

1 Mission case (cultivation transmission case)
6 Rotary (cultivation equipment)
9 Engine 22 Bracket 23 Front lifting wheel 26 Cover 31 Lifting handle (handle)

Claims (3)

  A tilling device (6) is provided in front, a tilling transmission case (1) for transmitting driving force from the engine (9) to the tilling device (6) is provided, and a holding mechanism for lifting the fuselage is provided above the tilling device (9). In the cultivator provided with the hand (31) protruding, the handle (31) is attached at the base end between the engine (9) of the cultivating transmission case (1) and the cultivator (6). A handle for lifting the fuselage in the field cultivator extended to the front position via the upper part of the device (6).   A bracket (22) for supporting the front lifting wheel (23) for setting the tillage depth is provided on the front side of the tillage transmission case (1), the bracket (22) protrudes upward, and the bracket (22) The handle for lifting the fuselage in the tiller according to claim 1, wherein the handle (31) for lifting the fuselage is connected and fixed to the front end side.   The handle for lifting the body in the tiller according to claim 1 or 2, wherein a cover (26) for covering the top of the tillage device (6) is attached to the handle (31) for lifting the body.

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