JP2506084Y2 - Cultivation part structure of management machine - Google Patents

Description

[Detailed description of the present invention] (a) Industrial application field The present invention relates to a tillage section structure of a management machine.

(B) Conventional technology Conventionally, as an example of the tilling section of a management machine, boss sections whose axis lines incline downward are provided on the lower left and right side surfaces of the tilling transmission case, and the tilling transmission is performed through the boss section. The output shafts project from the lower left and right side walls of the case, the inner ends of the pipe-shaped cultivating shafts are fitted to the output shafts, and the inclined claw shafts are provided between each cultivating shaft and the boss. There is a type in which an inclined claw shaft is rotatable in association with a cultivating shaft, and a cultivating claw is attached to each of the peripheral surfaces of the cultivating shaft and the inclined claw shaft.

The tilling claw attached to the tilling shaft is used to plow the cultivator, and the tilling claw attached to the inclined claw shaft is used to plow the cultivator located immediately below the tilling transmission case to prevent residual tillage.

(C) Problems to be solved by the invention However, in the above-mentioned cultivating part, since the interlocking connection structure of the inclined pawl shaft and the cultivating shaft is a spline fitting structure or a dog type engaging structure, both shafts are centered. The manufacturing cost was high because of the need for high accuracy.

Further, in the case of such interlocking connection structure, there is a problem that the structure is complicated and cannot be made compact.

(D) Means for Solving the Problem In the present invention, therefore, boss portions whose axis lines incline downward are provided on the lower left and right side surfaces of the tilling power transmission case, and the lower portion of the tillage power transmission case is penetrated through the boss portions. Output shafts are respectively projected from the left and right side walls, the inner ends of the pipe-shaped cultivating shafts are fitted to the output shafts, and the inclined claw shafts are provided between the cultivating shafts and the bosses. In the cultivating part structure of the management machine in which the tilting claw shaft can be rotated in conjunction with the cultivating shaft and the cultivating shaft and the tilting claw shaft are respectively attached to the peripheral surfaces, the output shaft, the cultivating shaft and the tilting claw shaft are , A pin tillage structure of a management machine, characterized in that pin through holes corresponding to each other are provided, the through pins are penetrated into the pin through holes, and these shafts can be integrally rotated. Is.

Further, it is also characterized in that the output shaft, the inclined pawl shaft and the through pin intersect each other at the same point.

(E) Action / Effect According to the present invention, the following action / effect is produced.

That is, according to the present invention, by inserting a single through pin into the pin through holes provided in the output shaft, the cultivating shaft, and the inclined pawl shaft, respectively, the shafts can be integrally rotated, and the spline fitting can be performed. Since there is almost no need to increase the centering accuracy unlike the structure and the dog type meshing structure, the manufacturing cost can be reduced.

Further, since only one through pin is inserted, the interlocking connection structure can be simplified and made compact.

In addition, the work of attaching and detaching the slanted claw shaft can be easily done by inserting and removing a single penetration pin.

Also, by intersecting each axis of the output shaft, the inclined pawl shaft and the penetrating pin at the same point, not only the cultivating shaft but also the inclined pawl shaft can be smoothly rotated. It is possible to increase the efficiency of tilling with the tilling claws.

(F) Embodiment An embodiment of the present invention will be described below with reference to the drawings.

(A) shown in FIG. 1 is a management machine provided with a tillage unit according to the present invention, and the management machine (A) connects a tillage unit (2) behind the machine (1). .

In the machine (1), a motor unit (3) is provided on a body frame (1a), and a transmission case (4) is hung from the rear of the body frame (1a). The wheels (4a) and (4a) are mounted on the side, and the upper part of the transmission case (4) and the motor unit (3) are interlocked via a transmission case (5). (6) is a handle stand, and (7) is a handle.

The tilling unit (2) connects the front end of the tilling frame (8) to the rear end of the body frame (1a) via a connecting unit (9), and the tilling frame (8) is located above the transmission case (4). ), The upper part of the tilling transmission case (10) supporting the middle part is interlocked, and the lower part of the case (10) is the tilling shaft (11).
A plurality of tillage claws (12) (12 ') are attached to the tiller shaft (11).

Then, as shown in FIGS. 2 and 3, a pair of left and right boss support plates (13) (13) are disposed opposite to each other on the lower left and right side surfaces of the tillage transmission case (10) to support both support plates (13). ) (13) is connected to the front and rear with bolts (14), and both support plates (13)
The lower part of the case (10) is held by the (13), and boss parts (15) (15) are attached to the outer side surfaces of the support plates (13) (13). (13d) is an output shaft insertion hole.

The bosses (15) and (15) are as shown in FIG.
Each axis is inclined downward, and the boss (15) (1
5) Output shaft (16) from the lower part of the tilling transmission case (10) inside
(16) is projected, and the inner ends of the pipe-shaped tilling shafts (11) and (11) are fitted to the output shafts (16) and (16).

As shown in FIG. 3, a cylindrical inclined claw shaft (17) is provided between the output shaft (16) and the boss (15). A bearing (18) is interposed between the outer peripheral surface of the) and the inner peripheral surface of the boss portion (15), and the inclined claw shaft (17) is rotatable concentrically with the boss portion (15). At the same time, the slanting claw shaft (17), the output shaft (16), and the tilling shaft (11) are penetrated through the penetrating pin (19) in an orthogonal state so that they rotate integrally.

Further, in FIGS. 2 to 6, (11a) (16a) (17a)
Are pin through holes provided in the cultivating shaft (11), the output shaft (16) and the inclined pawl shaft (17), and (19a) is the through pin (1
9) A rotation stopper provided on the head, (19b) is a retaining pin that penetrates the tip of the penetration pin (19) in a transverse manner, and (17b) restricts rotation of the rotation stopper (19a) from the front and rear sides. Regulated piece, (20)
(21) is a retaining ring.

And on the tilling shaft (11), as shown in FIG.
The first and second claw support cylinders (22) and (23) are fitted to each other, and the fixing pins (24) and (25) of the claw support cylinders (22) and (23) and the tiller shaft (11) are orthogonal to each other. And fixed to each claw support cylinder (22) (23) by changing the phase angle by 180 degrees and projecting claw mounts (26) (27) in the radial direction. Plowing claws (12) (12 ') are attached to 26 (27).
(12a) and (12'a) are mounting bolts.

Further, the inclined claw shaft (17) is also provided with claw mounts (29) (29) projecting in the radial direction by changing the phase angle by 180 degrees, and the claw mounts (29) (29) are provided with plowing claws (12). ) (12 ') is attached.

The embodiment of the present invention is configured as described above,
According to this embodiment, the following operational effects are produced.

That is, in this embodiment, one through pin (19) is
By integrally inserting the output shaft (16), the cultivating shaft (11), and the inclined pawl shaft (17) into the pin through holes (16a), (11a), and (17a) provided in the shafts, the shafts are integrally rotated. Since there is almost no need to increase the centering accuracy as in the spline fitting structure and the dog type engaging structure, the manufacturing cost can be reduced.

Moreover, since only one through pin (19) is inserted, the interlocking connection structure can be simplified and made compact.

Also, the work of attaching / removing the inclined pawl shaft (17) can be easily done by inserting / removing the single penetration pin (19).

Further, as shown in FIG. 7, the penetrating pin (19) has its axis (L1) at the intersection of the axis (L2) of the output shaft (16) and the axis (L3) of the inclined pawl shaft (17). By crossing,
Not only the cultivating shaft (11) but also the slanting claw shaft (17) can be smoothly rotated, and the cultivating efficiency is increased by the cultivating claws (12) (12 ') attached to the cultivating shaft and the slanting claw shaft, respectively. You can

Further, as shown in FIG. 8, the pin through hole (17a) provided in the inclined claw shaft (17) is formed in a long hole which is long in the front-rear direction in the same direction as the axis line (L3) of the inclined claw shaft (17). By doing
The thrust load acting on the penetrating pin (19) during rotation of the inclined pawl shaft (17) is reduced to ensure the transmission of the power of the inclined pawl shaft (17) from the penetrating pin (19) and also to the same inclination. This ensures smooth rotation of the pawl shaft (17).

Further, as shown in FIG. 9, the penetration pin (19) has a penetration pin fixing bolt (35) screwed to the tip of the output shaft (16), and the tip of the bolt (35) is penetrated to the penetration pin (19). By pressing against the peripheral surface of the central portion of 19), the penetration pin (19) can be fixed and prevented from coming off.

With this configuration, the penetration pin (19) can be easily attached and detached, and the cultivating shaft (11) and the inclined pawl shaft (17) can be easily replaced.

Further, since the through-pin fixing bolt (35) can be used for fixing, it is not necessary to provide a retaining pin or the like at the head or the tip of the through-pin (19). It is possible to prevent the culm and the like from being wound by preventing the head and the tip of the from protruding from the outer peripheral surface of the inclined pawl shaft (17).

Further, as shown in FIG. 10 and FIG. 11, the cultivating shaft (11)
A pair of upper and lower cutout grooves (36) (36) are formed on the inner end of the through-hole (19) through the cutout grooves (36) (36).
The tiller shaft (11) can be freely fitted to the output shaft (16) that penetrates the shaft, and the through pin fixing bolt (35) is attached to the tip of the output shaft (16).
By screwing, the cultivating shaft (11) is prevented from coming off via the locking plate (37), and the penetrating pin (19) is fixed. (11e) is a step portion for contacting the locking plate formed on the inner peripheral surface of the tiller shaft (11).

With such a configuration, it is possible to easily attach and detach the cultivating shaft (11) with the penetration pin fixing bolt (35) without removing the penetration pin (19).

[Brief description of drawings]

FIG. 1 is a side view of a management machine having a tilling unit structure according to the present invention. FIG. 2 is a side view of the tilling part. FIG. 3 is a partially cutaway rear view of the tilling part. FIG. 4 is a cross-sectional side view showing a state in which the penetration pin is attached to the inclined pawl shaft. FIG. 5 is a plan view of the same. FIG. 6 is an explanatory view of mounting the penetration pin on the inclined pawl shaft. FIG. 7 is a cross-sectional explanatory view showing a mounting state of the penetration pin. FIG. 8 is a cross-sectional plan view of the pin through hole of the inclined pawl shaft. FIG. 9 is a sectional side view of a penetration pin fixing structure as another embodiment. FIG. 10 is a cross-sectional side view of a penetration pin fixing structure as another embodiment. FIG. 11 is a plan view of the cultivating shaft provided in the fixed structure. (A): Management machine (10): Tillage transmission case (11): Tillage shaft (12) (12 '): Tilling pawl (15): Boss (17): Inclined pawl shaft

Claims (2)

(57) [Scope of utility model registration request] 1. The lower left and right side surfaces of a tilling transmission case (10)
Providing bosses (15) (15) with their axes sloping downward, penetrating through the bosses (15) (15) to the output shaft (16) from the left and right side walls at the bottom of the tillage transmission case (10).
(16) is projected, and the inner ends of the pipe-shaped cultivating shafts (11) and (11) are fitted to the output shafts (16) and (16), respectively, and the cultivating shafts (11) and (11) are connected to the bosses. Inclined claw shafts (17) and (17) are respectively provided between (15) and (15), and the inclined claw shafts (17) and (17) can be rotated in conjunction with the cultivating shaft (11). ,
The output shaft (16) and the tiller shaft (11) are provided in the tiller part structure of the management machine in which the tiller claws (12) (12 ') are attached to the peripheral surfaces of the tiller shaft (11) and the slanted claw shaft (17) (17), respectively. ) And the inclined claw shaft (17) are provided with corresponding pin through holes (16a) (11a) (17a), and the through pin (19) is passed through the pin through holes (16a) (11a) (17a). In addition, the tiller structure of the management machine is characterized in that the shafts (16) (11) (17) are integrally rotatable. 2. The tillage part structure of a management machine according to claim 1, wherein the output shaft (16), the inclined claw shaft (17) and the penetrating pin (19) intersect each other at the same point.