JPH0974802A - Device for mounting traveling wheels on a cultivating rotor - Google Patents

Abstract

(57) [Abstract] [PROBLEMS] To attach a cultivating rotor to a rotary shaft protruding from the lower end portion of a transmission case of a walk-behind cultivator to both left and right sides, and to attach and detach traveling wheels to the outside of the cultivating rotor. To do. A walking type cultivator equipped with a cultivating rotor with a cultivating claw attached to the outer periphery of a cultivating claw mounting body on a rotary shaft projecting from the lower end of a transmission case to the left and right sides. At the center of rotation of the mounting body, there is provided a fitting insertion hole into which a supporting rod protruding laterally from the rotation center of the traveling wheel having a diameter larger than the turning radius of the plowing pawl is inserted, and the supporting rod is provided in this fitting insertion hole. In the state of being inserted, the engaging rod protruding from the traveling wheel is inserted into the engaging piece provided on the tiller mounting body and is prevented from coming off by the retaining pin.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention mounts a cultivating rotor on a rotary shaft projecting from the lower end of the transmission case of a walk-type cultivator to the left and right sides, and attaches / detaches traveling wheels to the outside of the cultivating rotor. The present invention relates to a traveling wheel mounting device for a cultivating rotor.

[0002]

2. Description of the Related Art Conventionally, there has been a walk-type cultivator in which a cultivating rotor having a cultivating claw attached to the outer periphery of a cultivating claw mounting body is attached to and detached from a rotary shaft protruding from the lower end of a transmission case. Are known. Various work machines are attached to and detached from the rotary shaft.For example, when attaching traveling wheels to the rotary shaft when driving a cultivator on the road, remove other work machines one by one. Was there.

[0003]

In the above-mentioned conventional cultivator, when the traveling wheels are attached to the rotary shaft and the cultivator is allowed to travel on the road, it is necessary to remove other working machines. That is, the cultivator cannot be driven on the road with the working machine attached to the rotary shaft, and therefore the work machine and the traveling wheels are not easily attached to and detached from the rotary shaft, which requires a lot of time. There was a problem. The present invention has been made to solve the above problems.

[0004]

In order to achieve the above-mentioned object, the present invention provides a cultivating roller having a cultivating claw attached to the outer periphery of a cultivating claw mounting body on a rotary shaft projecting from the lower end of the transmission case to both left and right sides. -In a walk-type cultivator equipped with a turret, a support rod protruding laterally from the center of rotation of a traveling wheel having a diameter larger than the radius of rotation of the cultivating pawl is fitted to the center of rotation of the body for mounting the cultivating pawl. Insert a fitting insertion hole to insert, and with the support rod inserted into this insertion hole, insert the locking rod protruding from the traveling wheel into the locking piece provided on the tillage claw mounting body, and It is characterized in that it is designed to prevent slipping out.

[0005]

With the above construction, the traveling wheel mounting device for a cultivating rotor according to the present invention is mounted on the cultivating rotor while the cultivating rotor is mounted on the rotary shaft protruding from the lower end of the transmission case to the left and right sides. The support rod protruding laterally from the center of rotation of the traveling wheel is inserted into the formed insertion hole, and the locking rod protruding from the traveling wheel is inserted into the locking piece provided on the tillage claw mounting body to prevent it from coming off. The cultivator can be run on the road with the cultivating rotor attached by simply retaining it with the pin. Further, by simply pulling out the retaining pin, the traveling wheels can be detached from the tilling rotor and the tilling work can be carried out immediately.

[0006]

Embodiments of the present invention will be specifically described below with reference to the accompanying drawings. In FIG.
Reference numeral 1 is a transmission case of a walking type power tiller, and rotary shafts 2 are projected from the lower end of the transmission case 1 to the left and right sides. The rotary shafts 2 and 2 have a hexagonal cross section, and are provided with locking pin insertion holes 2a so that various working machines can be mounted. On the outer periphery of the body 3, the plowing rotors 7, 7 each having a large number of plowing pawls 6 and a large number of plowing pawls 6 attached thereto are detachably mounted.

As shown in FIG. 2, the tiller attachment body 3 has a long horizontal length and a hexagonal side surface, and side plates are formed on the inside of both left and right end portions of the cylinder. Fitting holes (shaft cylinders) in which the rotary shafts 2 are fitted and inserted between the side plates 8 and 8 at the center of rotation of the tillage claw mounting body 3.
9 is stuck. Further, on the outer peripheral surface of the tillage claw mounting body portion 3, the inclined portion 3 is gently inclined so that the front side is lower and the rear side is higher with respect to the rotation direction (the arrow direction in FIG. 2).
a and the step portion 3b are alternately formed in the circumferential direction. The claw mounting portions 4 are evenly distributed in the lengthwise and circumferential directions of the tilling claw mounting body 3 and fixed to the inclined portion 3a with the stepped portion 3b on the front side.

Further, the rotary shaft 2 is located at the stepped portion 3b of the tillage claw mounting body 3 and the rotary shaft 2 is fitted in the fitting insertion hole 9 from the outer peripheral surface one side of the tillage claw mounting body 3. Lock pin insertion part for inserting and supporting the lock pin 10 which penetrates the lock pin insertion hole 9a of 9 and the lock pin insertion hole 2a of the rotary shaft 2 and reaches the other side of the outer peripheral surface of the tillage claw mounting body 3. 11, 11a are fixed. The locking pin insertion portion 11 is provided with a pin hole 11b in a direction orthogonal to the insertion direction of the locking pin 10, and the pin hole 11b and the pin hole 10a formed in the locking pin 10 are prevented from coming off. By inserting the pin 12, the locking pin 1
0 is locked in.

At the outer end of the cultivating rotor 7, the traveling wheels 13 according to the present invention can be attached and detached when traveling on the road with the cultivating rotor 7 mounted on the rotary shaft 2. Has become. As shown in FIG. 3, the traveling wheel 13 has a hollow mounting shaft cylinder 15 projecting horizontally from the center of the boss portion 14 and having a hexagonal cross section. A pin hole 15a is formed in the mounting shaft cylinder 15, and the support rod 1 fitted into the fitting insertion hole 9 is provided inside the mounting shaft cylinder 15.
6, locking rod support cylinder 1 with a key-shaped locking rod 17 attached to the outside
The support rod 16 and the lock rod support cylinder 18 are attached to the mounting shaft cylinder 15 by inserting the lock pin 19 in a state in which 8 is inserted. Further, the locking rod 17 is provided with a pin hole 17a.

On the other hand, a locking piece 20 having a locking rod insertion hole 20a is fixedly provided at a position facing the locking rod 17 on the outer end of the tilling claw mounting body 3 of the tilling rotor 7. ing. A pin hole 17a is formed at the tip of the locking rod 17, and the support rod 16 and the locking rod support barrel 1 are attached to the mounting shaft barrel 15.
8 is attached, the support rod 16 is inserted into the insertion hole 9, the locking rod 17 is inserted into the locking rod insertion hole 20a, and the retaining pin 21 is inserted into the pin hole 17a.
The traveling wheels 13 are prevented from slipping off from the tiller claw attachment body 3 of the tiller rotor 7. The diameter of the traveling wheel 13 is larger than the turning radius of the tilling pawl 6 mounted on the tilling pawl mounting body 3 by a difference S.

Next, the operation of the traveling wheel mounting device for a tilling rotor according to the present invention constructed as described above will be explained.

When mounting the cultivating rotor 7 on the rotary shaft 2 of the transmission case 1 of the power tiller, the rotary shaft 2 is fitted with the fitting hole 9 of the cultivating pawl mounting body 3 and the locking pin 10 is fitted. Inserted from the locking pin insertion portion 11, the locking pin insertion hole 9 of the fitting insertion hole 9
a and the locking pin insertion hole 2a of the rotary shaft 2 are penetrated and inserted until reaching the locking pin insertion portion 11a. Then, from the pin hole 11b of the locking pin insertion portion 11, the pin hole 10a formed in the locking pin 10 is penetrated to prevent the retaining pin 12 from coming off.
The locking pin 10 is prevented from coming off by inserting the locking pin 10. Therefore, the cultivating rotor 7 can be easily and accurately attached to the rotating shaft 2.

When removing the cultivating rotor 7 from the rotary shaft 2, the retaining pin 12 is attached to the pin hole 1 of the engaging pin inserting portion 11.
1b, and the locking pin 10 to the locking pin insertion portion 11,
The plowing rotor 7 can be easily removed only by pulling it out from 11a.

The plowing rotor 7 rotates in the forward direction of the machine body (the direction of the arrow in the drawing), and the plowing work is carried out by the plowing pawls 6, 6 ... With the progress of the machine body. At that time, the plowing pawls 6, 6 ,. The claw mounting portion 4 is fixedly distributed evenly in the lengthwise direction and the circumferential direction of the tilling claw mounting body 3 on the inclined portion 3a with the step 3b of the tilling claw mounting body 3 on the front side. Stable tilling work is performed by reducing the tilling resistance,
Further, the wear of the pawl mounting portion 4 and the bolts / nuts 5 is reduced. Further, in the tillage claw mounting body 3, the soil cultivated by the tillage claws 6, 6 ... Is leveled while being pressed and squeezed by the inclined portion 3a, and the leveling and squeezing work is performed simultaneously with the cultivating work.

When the cultivator is allowed to travel on the road with the cultivating rotor 7 mounted on the rotary shaft 2, the cultivating rotor is used.
The traveling wheel 13 is attached to the outer end of the motor 7. At that time, with the support rod 16 and the locking rod support barrel 18 attached to the mounting shaft barrel 15 of the traveling wheel 13, the support rod 16 is fitted into the fitting insertion hole 9, and the locking rod 17 is locked. 20 is inserted into the locking rod insertion hole 20a, and the retaining pin 21 is inserted into the pin hole 17a.
By inserting the traveling wheel 13 into the cultivating rotor 7,
It is prevented from coming off with respect to the tiller mounting body 3. In this state, the diameter of the traveling wheel 13 is larger than the turning radius of the tilling claw 6 mounted on the tilling claw mounting body 3 by the difference S, so that the tilling claw 6 does not come into contact with the road surface on the road. You can drive stably. In addition, the plowing rotor 7
When removing the traveling wheel 13 from the
Just pull out.

[0016]

As described above, according to the traveling wheel mounting device for a plowing rotor of the present invention, the rotary shaft projecting from the lower end of the transmission case to the left and right sides and the outer periphery of the plowing pawl mounting body are cultivated. A plowing rotor with pawls is attached, and a supporting rod protruding laterally from the center of rotation of a traveling wheel having a diameter larger than the turning radius of the plowing pawl is fitted to the center of rotation of the plowing pawl mounting body. Insert a fitting insertion hole to insert, and with the support rod inserted into this insertion hole, insert the locking rod protruding from the traveling wheel into the locking piece provided on the tillage claw mounting body, and Since it is designed to prevent it from coming off, the rotary shaft is
With the motor attached, a support rod protruding laterally from the center of rotation of the traveling wheel is inserted into the insertion hole formed in the tilling rotor, and the locking rod protruding from the traveling wheel is attached to the tilling claw mounting body. The cultivator can be run on the road while the cultivating rotor is still attached by simply inserting the cultivating rotor into the engaging piece provided in the above and retaining it with the retaining pin. Also, by simply pulling out the retaining pin, the traveling wheels can be removed from the tiller rotor,
It is possible to perform plowing work with the plowing rotor as it is.

[Brief description of drawings]

FIG. 1 is an exploded perspective view in which traveling wheels are attached to a tilling rotor according to the present invention.

FIG. 2 is an enlarged cross-sectional view taken along the line AA of FIG.

FIG. 3 is a side view showing a state in which traveling wheels are attached to the cultivating rotor.

[Explanation of symbols]

 1 Transmission Case 2 Rotating Shaft 2a Locking Pin Insertion Hole 3 Tilling Claw Mounting Body 3a Sloping Part 3b Step 4 Claw Mounting Part 5 Bolts / Nuts 6 Tilling Claws 7 Tilling Rotor 8 Side Plate 9 Rotating Shaft Fitting Hole (Shaft Tube) 9a Locking pin insertion hole 10,19 Locking pin 10a Pin hole 11,11a Locking pin insertion part 11b Pin hole 12,21 Locking pin 13 Traveling wheel 14 Boss part 15 Mounting shaft cylinder 15a Pin hole 16 Supporting rod 17 Engagement Stop rod 17a Pin hole 18 Locking rod support cylinder 20 Locking piece 20a Locking rod insertion hole S Difference between the turning radius of the plowing pawl and the diameter of the traveling wheel

Claims (1)

[Claims] 1. A walking type cultivator equipped with a cultivating rotor having a cultivating claw attached to the outer periphery of a cultivating claw mounting body on a rotary shaft protruding from the lower end of the transmission case to the left and right sides. At the center of rotation of the trunk, a fitting insertion hole is provided for fitting a support rod protruding laterally from the center of rotation of the traveling wheel having a diameter larger than the turning radius of the plowing claw, and the support rod is provided in this fitting hole. To the cultivating rotor characterized in that, in the fitted state, the locking rod protruding from the traveling wheel is fitted into the locking piece provided on the body part for mounting the tilling claw, and is prevented from coming off by the retaining pin. Travel wheel mounting device.