JPH0549303A - Device for installing tillage tine - Google Patents

Abstract

PURPOSE:To prevent a state in which tillage tines are installed in error by fixing the tillage tines in a specific state on a rotary shaft protruding left and right of a center transmission case of a center driving type tillage device. CONSTITUTION:Pin inserting holes (3a) and (3b) are shifted around the rotary shaft 2 protruding from a transmission case 1 at an angle obtained by dividing 360 deg. by the total number of tillage tines 8 attached to left and right cylindrical shafts 5 for installing the tines and formed in the rotary shaft 2. The base sides of the cylindrical shafts for attaching the tines are inserted and passed through the rotary shaft and holes formed in the cylindrical shafts are fitted to the pin inserting holes. The pins are then passed through the holes to fix the tillage tines.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION The present invention relates to an agricultural truck truck.
TECHNICAL FIELD The present invention relates to a structure for mounting a forward / reverse rotating tilling claw in a forward / reverse rotating tiller such as a tiller or a tiller.

[0002]

2. Description of the Related Art Conventionally, in a center drive type tiller for forward and reverse rotation, a claw-mounting cylinder shaft fitted and fixed to the left and right rotary shafts is fixed at the same phase position around the rotary shaft. A plurality of tillage claws are mounted at equal angles around the left and right claw mounting cylinder axes.

[0003]

In the prior art,
When the tillage claws are attached to the claw mounting cylinder shaft, there are disadvantages that the left and right parts are separate parts, the cost is increased, and an unexpected situation occurs in which the tillage claws are erroneously attached.

[0004]

SUMMARY OF THE INVENTION In order to solve the above-mentioned problems of the prior art, the present invention is directed to a center drive type forward and reverse cultivating apparatus, in which both sides of a center transmission case 1 are projected. The rotary shaft 2 is fitted with the claw-mounting cylinder shafts 5 attached to the tilling claws 8 at a predetermined angle that evenly divides 360 degrees, which is the circumferential direction of rotation, at regular intervals in the left-right longitudinal direction. In this case, the tilling claw mounting device is provided with a fixing means that is fixed by displacing 360 degrees by an angle divided by the number of all tilling claws mounted on the left and right claw mounting cylinder shafts.

[0005]

EXAMPLE 1 1 is a transmission case in a tiller.
Reference numeral 2 denotes a rotary shaft, which is transmitted by a drive mechanism in the transmission case 1 so as to rotate normally or reversely, and protrudes to both left and right sides of the case 1. The rotary shaft 2 is provided with pin insertion holes 3a and 3b through which fixing pins for fitting and fixing a claw mounting cylinder shaft, which will be described later, are inserted into the left and right claw mounting cylinder shafts. Are provided by being shifted about the axis by an angle obtained by dividing 360 degrees by the number of. That is, in the case of the embodiment, since 12 tillage claws are mounted as a whole, the pin insertion holes 3a and 3b are provided with a shift of 30 degrees.

Reference numeral 4 denotes an input side sprocket of the rotary shaft 2. Reference numeral 5 is a claw-mounting cylindrical shaft, and the base side is inserted into the rotary shaft 2 so that the holes 6a and 6b formed in the cylindrical shaft 5 and the pin insertion holes 3a and 3b are aligned and the pins 7a and 7b are inserted and inserted. Brackets 11 for fixing forward and reverse cultivating tillage claws 8 with bolts 9 and nuts 10 are fixed to the claw-mounting cylinder shaft 5 at predetermined intervals from the base side, and the cylinder shaft 5 is rotated in the circumferential direction. Is welded at an angle of 180 degrees divided by 1/2 of the total number of tillage claws.

The forward and reverse use tillage claw 8 is formed by bending the tip side of a ladle-shaped iron plate from which the handle is removed to one side, and at the base side thereof is joined to the bracket 11 by means of bolts and nuts. Two holes on the left and right for fixing are drilled. In the above example, the tilling 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, each of the tilling claws 8 is fixed around the shaft at a certain angle, and is fixed to each other.
Is configured. Then, this is inserted into the left and right rotary shafts 2 of the tiller, and the holes 6 are formed by the pins 7a and 7b.
When they are attached through a, 6b and 3a, 3b, each tilling claw 8 is fixed as a whole with a form offset by a certain angle around the axis, and the same is true even if the rotary shaft 2 rotates forward or backward. Rotating work can be done in this condition, and fluctuations in tilling power do not occur.

In order to make a tilling device with a drum 12 so that weeds and the like do not wind around the rotary shaft or the claw mounting cylinder shaft as in another embodiment of FIG. Claw holes 13, 1 through which the base side of
3, and the bracket 11a fixed to the cylinder shaft 5 is narrowed so that the bracket 11a can be projected so that the bracket 11a does not overlap when viewed from the axial direction. A bolt insertion hole 14 for attaching a nail is provided in the center of the projectable portion so that the tilling nail 8 can be fixed in the drum. The drum 12 has bolt insertion holes 16 formed in the drum fixing plates 15 and 15 fixed to portions near the outer end side and the inner end side of the cylinder shaft 5, and the inner wall on the left and right end sides of one of the drums 12 has the above-mentioned structure. Brackets 17 and 17 for fixing the drum fixing plate 15 are welded to each other, and bolt insertion holes 18 are provided in the brackets 17, 17 so that the drum 12 is fixed to the claw mounting cylinder shaft 5 with bolts 19 and nuts 20. In the case of this embodiment, as a matter of course, in order to mount the cylindrical shaft 5 with the drum on the rotary shaft 2, it is mounted with long pins 21a and 21b which penetrate the drum. 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 pin removal.

In an agricultural truck turret, a tiller or a management machine, an engine is mounted on the vehicle body side,
The power of the running side and the power of the tilling device side are taken out from this engine. However, a recoil starter mechanism is usually adopted when the engine is started. This recoil starter mechanism is interlocked with the starting shaft of the engine and is linked to the starting shaft of the engine only when rotating toward the starting side, and when not starting, the return coil spring deviates from the starting shaft to the opposite starting rotation side and idles. A known starter shaft is provided with a starter pulley wound around the base end side of the starting rope. By the way, when starting the engine, the choke valve on the carburetor side is usually operated to make the engine start smoothly. However, the operation of the choke valve may be forgotten, which is a particular problem when an old man or woman starts the engine.

In order not to cause such an unexpected situation,
Recently, the number of automobiles and trucks for agricultural use that are automatically controlled by electric control is increasing. However, such a configuration requires a battery and increases the cost. Therefore, the starter of the recoil starter mechanism of the engine
The base portion of the starter knob 24 attached to the tip of the turret 23 is housed in the winding end portion of the starter rope 23, and the rope cap 25 for guiding the rope 23 is attached to the starter rope. Pivot (a) to rotate in the pulling direction,
The rope mouthpiece 25 and the choke valve 26 are interlocked by an interlocking member 27 such as a wire or a rod, and when the engine is started by pulling the starter rope 23, the choke valve must be used. If the engine is closed when the engine is closed, the engine can be easily started even in winter, which is convenient. Reference numeral 28 is a return spring for the starting choke, 29 is a carburetor, 30 is a starter cover, and 31 is an engine body.

[0011]

According to the present invention, when the left and right rotary tillage shafts of the tiller for the center drive are fitted with the forward and reverse tilling claws, it is possible to prevent an accidental situation where they are mistakenly attached. Since it is only necessary to assemble two claw-mounting cylinder shafts, in which the tillage claws are mounted in the same form on the left and right sides, and to simply mount them on the rotary shafts on the left and right sides, a single component is provided, and the cost is reduced.

[Brief description of drawings]

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

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

FIG. 3 is a back cross-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 an engine starting mechanism.

[Explanation of symbols]

 1 Transmission case 2 Rotary shaft 5 Claw mounting cylinder shaft 8 Tilling claw

Claims (1)

[Claims] 1. A center-drive type tiller for forward / reverse rotation, wherein a tiller claw 8 is arranged in a circumferential direction of rotation on a rotary shaft 2 projecting to both right and left sides of a center transmission case 1.
In order to fit and integrally mount the pawl mounting cylinder shafts 5 mounted at a predetermined angle that equally divides 60 ° in the left-right longitudinal direction, 360 ° to the left and right pawl mounting cylindrical shafts. An apparatus for mounting a tilling claw, which is provided with fixing means that is fixed by displacing it by an angle divided by the number of all the tilling claws to be mounted.