JP2956297B2 - Tillage claw mounting device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION The present invention relates to an agricultural truck
The present invention relates to a structure for mounting a forward / reverse tillage claw in a forward / reverse tillage device such as a tiller or a management machine.

[0002]

2. Description of the Related Art Conventionally, in a center drive type tillage device for forward / reverse rotation, a claw mounting cylindrical shaft which is inserted and fixed to the left and right rotary shafts is fixed at the same phase position around the rotary shaft with respect to the rotary shaft. In this configuration, a plurality of tillage claws are mounted at equally distributed angles around the left and right claw mounting cylinder shafts.

[0003]

SUMMARY OF THE INVENTION In the prior art,
When the tillage claw is mounted on the claw mounting cylinder shaft, the left and right parts are separate parts, which increases the cost, and there is a disadvantage that an unexpected situation occurs in which the tillage claw is erroneously mounted at the time of mounting.

[0004]

SUMMARY OF THE INVENTION In order to solve the above-mentioned problems of the prior art, the present invention relates to a center-drive type forward / reverse tillage device which projects on both left and right sides of a center transmission case 1. Claw mounting cylinder shafts 5, which are attached to the rotary shaft 2 at a predetermined angle to divide the tillage claw 8 equally into 360 degrees, which is the circumferential direction of rotation, and at regular intervals in the left and right longitudinal directions, are fitted and integrated. The fixing device is provided with fixing means for fixing by displacing 360 degrees by an angle obtained by dividing 360 degrees by the total number of the tillage nails mounted on the left and right claw mounting cylinder shafts.

[0005]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Reference numeral 1 denotes a transmission case in a tillage device.
Reference numeral 2 denotes a rotary shaft, which is driven to rotate forward or backward by a drive mechanism in the transmission case 1 and protrudes on both left and right sides of the case 1. The rotary shaft 2 has pin insertion holes 3a and 3b through which fixing pins for fitting and fixing a nail mounting cylinder shaft to be described later are inserted. Are shifted around the axis by an angle obtained by dividing 360 degrees by the number of the lines. That is, in the case of the embodiment, the pin insertion holes 3a and 3b are provided shifted by 30 degrees since 12 tillage claws are attached as a whole.

Reference numeral 4 denotes an input sprocket of the rotary shaft 2. Reference numeral 5 denotes a claw mounting cylinder shaft, which is formed by inserting the pins 7a and 7b into the holes 6a and 6b formed in the cylinder shaft 5 by inserting the base side through the rotary shaft 2 and the pin insertion holes 3a and 3b. A bracket 11 for fixing a cultivating claw 8 for both forward and reverse rotation with bolts 9 and nuts 10 is provided on the claw mounting cylinder shaft 5 at a predetermined interval from the base side, and furthermore, in a circumferential direction of rotation, the cylinder shaft 5 is fixed. Are welded at an angle of 180 degrees divided by 1/2 of the total number of tillage claws.

The tillage claw 8 for both forward and reverse rotation is formed by warping the tip side of a scoop-shaped iron plate from which the handle has been removed to one side, and is joined to the bracket 11 on its base side with bolts and nuts. There are two holes on the left and right for fixing. In the above example, the tillage claw 8 is fastened to the inner surface of each bracket 11 of the claw mounting cylinder shaft 5 with the bolt 9 and the nut 10. Then, two same tillage claw-integrated cylindrical shafts 5 in which each tillage claw 8 is fixed by being shifted by a fixed angle around the axis.
Is configured. Then, this is inserted into the left and right rotary shafts 2 of the tillage device, and the holes 6 are formed by the pins 7a and 7b.
a, 6b and 3a, 3b, the tillage claws 8 are fixed at a certain angle around the axis as a whole, and the same even if the rotary shaft 2 rotates forward or backward. Rotary work can be performed in this state, and fluctuations in tillage power do not occur.

In order to prevent a weed or the like from wrapping around the rotary shaft or the claw mounting cylinder shaft as in another embodiment shown in FIG. Through holes 13, 1 through which the base side of
The brackets 11a fixed to the cylindrical shaft 5 are configured to be projectable so that the front ends of the brackets 11a are not overlapped when viewed from the axial direction. A bolt insertion hole 14 for attaching one nail is provided in the middle of the projectable portion so that the cultivating nail 8 can be fixed in the drum. The drum 12 is provided with bolt insertion holes 16 in drum fixing plates 15, 15 fixed to portions near the outer end and the inner end of the cylindrical shaft 5. Brackets 17 and 17 for fixing the drum fixing plate 15 are welded to form bolt insertion holes 18, and the drum 12 is fixed to the claw mounting cylinder shaft 5 with bolts 19 and nuts 20. In the case of this embodiment, of course, in order to attach the cylindrical shaft 5 with the drum to the rotary shaft 2, the long shafts 21a and 21b penetrating the drum are used. Reference numeral 22 denotes a cover provided on one side of the pin hole of the drum 12 for protecting a hair pin for preventing a pin from being removed.

In an agricultural truck, a tiller or a management machine, an engine is mounted on a vehicle body side.
The power of the running side and the power of the tillage device are taken out from this engine. However, a normal recoil starter mechanism is often employed when starting the engine. The recoil starter mechanism is interlocked with the starting shaft of the engine only when the engine is rotating to the starting side in conjunction with the starting shaft of the engine. When the engine is not started, the recoil starter mechanism is disengaged from the starting shaft to the non-starting rotating side by a return coil spring. A starter shaft is provided with a starter pulley wound around the base end of a starter rope. By the way, when starting the engine, usually, the choke valve on the carburetor side is operated to smoothly start the engine. However, the operation of the choke valve may be forgotten, and this is particularly problematic when an elderly person or a woman starts the engine.

In order not to cause such an unexpected situation,
In recent years, the number of automobiles and agricultural truck trucks of automatic chokes by electric control has increased. However, such a configuration requires a battery and increases the cost. Therefore, the starter of the recoil starter mechanism of the engine
The base side of the starter knob 24 attached to the tip of the taro 23 is accommodated in the wrapping end of the starter lobe 23, and the rope base 25 for guiding the rop 23 is provided at the time of starting. Pivot (a) to rotate in the pulling direction,
The rope base 25 and the choke valve 26 are linked and connected by an interlocking member 27 such as a wire or a rod. When the engine is started by pulling the starter loop 23, the choke valve must be used. Is closed and the engine is started, so that the engine can be easily started even in the winter season and is convenient. Reference numeral 28 denotes a return spring of a starting choke, 29 denotes a carburetor, 30 denotes a cover case of a starter pulley, and 31 denotes an engine body.

[0011]

According to the present invention, it is possible to prevent an unforeseen situation in which a tillage claw for forward / reverse rotation is attached to the left and right rotary tillage shafts in a tillage device for a center drive. It is only necessary to assemble two claw mounting cylinder shafts on which the tillage claws are mounted in the same form on the left and right sides and simply mount them on the rotary shafts on the left and right sides.

[Brief description of the drawings]

FIG. 1 is a back sectional view of a main part.

FIG. 2 is a side view of a main part.

FIG. 3 is a back sectional view of a main part of another example.

FIG. 4 is a side view of a main part of another example.

FIG. 5 is a side view of a main part of the engine starting mechanism.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Transmission case 2 Rotary shaft 5 Claw mounting cylinder shaft 8 Tillage claw

Claims (1)

(57) [Claims] In a center-drive type forward / reverse tillage apparatus, a rotary shaft 2 protruding on both right and left sides of a center transmission case 1 is provided with a tillage claw 8 in a rotating circumferential direction.
At a predetermined angle that equally divides 60 degrees, the claw mounting cylinder shafts 5 attached at regular intervals in the left and right longitudinal directions are fitted and integrally mounted. A fixing device for a tillage claw, comprising fixing means for displacing and fixing by an angle divided by the number of all tillage claws to be mounted.