JP2506213Y2 - Claw shaft operating device for rotary working machines - Google Patents

Description

[Detailed Description of the Invention] [Industrial field of application] The present invention allows forward or reverse rotation of a tilling claw shaft without changing the attachment of the tilling claw, or changing the inclination of the tillage claw shaft with respect to a direction orthogonal to the traveling direction. The present invention relates to a pawl shaft operating device for a rotary working machine that is capable of performing the above.

[Prior Art] Conventionally, in a rotary working machine constituted so that a lateral tilling claw shaft can be rotationally driven by a drive shaft vertically extending from a transmission gear case, as disclosed in Japanese Patent Laid-Open No. 2-3501. An upper portion of a transmission case having the drive shaft mounted therein is fitted to a lower portion of a support cylinder portion which is hung from the transmission gear case, and the transmission case is rotationally driven by a worm wheel inside the support cylinder portion. It was structured.

[Problems to be Solved by the Invention] However, with such a structure, the supporting cylinder portion becomes large in size, and it is difficult to attach it to the rotary frame, and the rotary frame side becomes large in size and difficult to configure. At the same time, it becomes difficult to assemble, and the strength of the support of the transmission case becomes insufficient, and other support parts must be provided, which complicates the structure and causes the worm wheel to slow down the drive. There was a problem that it took a long time to operate the steering wheel and became tired.

[Means for Solving the Problems] The present invention is intended to solve such a problem and to provide a simple structure that can be suitably implemented. Therefore, a supporting cylinder vertically provided below the transmission gear case is provided. Part is fixed to the rotary frame, and the upper part of the cylindrical transmission case containing the drive shaft is rotatably fitted over the entire length in the support cylinder part, and the upper end of the transmission case is in the lower part of the transmission gear case. A gear fitted to the part and a drive gear that meshes with the gear are mounted on the shaft, and the drive gear is transmission-connected to the upper handle.

[Operation] Therefore, since the upper portion of the transmission case is fitted over the entire length in the support tubular portion, the support tubular portion fixed to the rotary frame side can sufficiently support the entire tillage pawl shaft with sufficient strength. At the time of operation, the transmission case can be favorably rotated by the meshing rotation of both gears by simply rotating the handle slightly.

Example Next, an example shown in the drawings will be described.

FIG. 2 shows a side view of the management work machine, in which both wheels (10),
A rotary working machine (A) is connected to the rear of a management machine (B) equipped with an engine (11), a handle rod (12) and the like, and a hitch is provided in front of a rotary frame (5) of the rotary working machine (A). (13) is connected to the rear hitch (14) of the management machine (B), the rotary covers (15) are attached to both sides of the rotary frame (5), and the mission case of the management machine (B) ( A counter case (17) extending from the side of the upper part of 16) to the rear side allows transmission to the rotary working machine (A).

(1) is a transmission gear case, a lid (1a) is attached to the upper part, and a slightly longer supporting cylinder part (4) is integrally hung from the lower part and the supporting cylinder part (4) is attached. An input shaft (18) which is fixed to the rotary frame (5) and which is transmitted from the counter case (17) is provided inside the transmission gear case (1), and the input shaft (18) is provided on the input shaft (18). The transmission bevel gear (19) is loosely fitted, and the clutch body (20) that can be claw-engaged with the transmission bevel gear (19) is spline-fitted, and the stay (21) of the shifter (21) engaged with the clutch body (20) ( 22) is configured so that it can be operated by the outer lever (23).

(6) is a cylindrical transmission case into which a drive shaft is inserted, and a thick case (6a) is integrally formed on the upper portion of the transmission case (6), and the case (6a ) Is rotatably fitted through the bush (24) over the entire length of the support tubular portion (4), and is attached to both sides of the case (6b) connected to the lower end of the transmission case (6). Both drive shafts (25) that are transmitted by the drive shaft (2) are provided in a projecting manner, and both drive shafts (25) are fitted with both tillage claw shafts (3) provided with a large number of tillage claws (3a). Fixed and configured.

Further, a gear (7) is fitted and fixed to an upper end portion of the case (6a) protruding into an inner lower portion of the transmission gear case (1) and fitted to the case (6a) via a bush (26). A passive bevel gear (27) that meshes with the transmission bevel gear (19) is fitted and fixed to the upper end of the drive shaft (2) that projects into the transmission gear case (1), and the transmission gear case (1) is fixed. A drive gear (8) meshing with the gear (7) is fitted and fixed to a lower portion of a rotary shaft (28) which is rotatably provided so as to penetrate from the inside to the lid (1a), and is rotated. Axis (28)
The handle (9) is fixed to the upper end of the arm (9), and the handle (9) is configured by attaching a dowel screw (9a) that can be screwed into the lid (1a) to the tip of the arm (9b).

Therefore, since the case (6a) above the transmission case (6) fits over the entire length of the support cylinder (4), the transmission case (6) is fixed by the support cylinder (4) fixed to the rotary frame (5) side. Thus, the whole from the tillage claw shaft (3) side can be supported with sufficient strength.

Further, at the time of operation, the transmission case (6) can be rotated by the meshing rotation of both gears (8) and (7) by only slightly rotating the handle (9), and the tilling claw (3a) can be rotated. It is possible to rotate the tillage claw shaft (3) forward or backward without changing the position, or to change the inclination of the tillage claw shaft (3) with respect to the direction orthogonal to the traveling direction.

[Effects of the Invention] As described above, according to the present invention, the supporting cylinder portion (4) can be formed in a small size, and the rotary frame (5) can be compactly assembled and satisfactorily assembled, and the transmission gear case ( Since the gear can be assembled in the inside of 1) and the whole assembling can be easily performed, and the upper portion of the transmission case (6) is sufficiently fitted over the entire length in the supporting tubular portion (4), the rotary frame With the support cylinder portion (4) fixed to the (5) side, the entire tillage claw shaft (3) side can be provided with sufficient strength to surely and satisfactorily support it, and a robust structure can be obtained. Makes it possible to quickly and easily rotate the transmission case (6) by the meshing rotation of the drive gear (8) and the gear (7) by rotating the tillage claw shaft (3). Transmission case (6)
It has the features that it can be rotated around the center with good operability and that it can be suitably implemented with a simple structure.

[Brief description of drawings]

FIG. 1 is a side sectional view of an essential part which is an embodiment of the present invention, FIG. 2 is a side view of a management work machine, and FIG. 3 is a longitudinal sectional view of the essential part. (1) ... Transmission gear case, (2) ... Drive shaft (3) ... Tillage claw shaft, (4) ... Support cylinder part (5) ... Rotary frame (6) ... Transmission case, (7) ... Gear (8) … Drive gear, (9)… Handle

Claims (1)

(57) [Scope of utility model registration request] 1. A rotary working machine constructed such that a lateral drive shaft (3) can be rotationally driven by a drive shaft (2) vertically extending from the transmission gear case (1). ) Is fixed to the rotary frame (5), and the upper portion of the cylindrical transmission case (6) containing the drive shaft (2) is attached to the support cylinder (4). ), The gear (7) fitted to the upper end of the transmission case (1) is rotatably fitted over the entire length, and meshes with the gear (7). A pawl shaft operating device characterized in that a drive gear (8) for driving is rotatably mounted, and the drive gear (8) is transmission-coupled to an upper handle (9).