JPS5816842B2 - Taylor type tiller - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention comprises a ground work device that is movable up and down relative to this machine, and a lift lock that has an opposing surface parallel to a locking member attached to the machine or the ground work device. When a plurality of locking recesses are provided, the locking member and the locking member are configured to urge the locking member attached to the front ground work device or the machine in the direction of locking into the locking recess. The present invention relates to a Taylor-type cultivator, in which an ammunition is interposed between the two, and the engaging member is configured to be detachable from the engaging recess so that the ground working device can be manually lifted and lowered. .

As mentioned above, a so-called partial gear, which is provided with a plurality of upper and lower lifting lock locking recesses having parallel opposing surfaces, is engaged with an engaging member such as a pin to lock the working device relative to the machine. For example, compared to the case where a ratchet mechanism is used to position the working device with respect to the machine, positioning devices have the advantage of being able to reliably prevent the working device from rising or falling; It is not possible to quickly insert and remove the member into the elevating lock locking recess,
This method has the disadvantage that it takes time to lift and lower the working device.

SUMMARY OF THE INVENTION An object of the present invention is to eliminate the above-mentioned drawbacks while reliably preventing the working device from moving upward or downward.

The characteristic configuration of the present invention is that, in the above-mentioned Taylor type cultivator, the shape of the protruding edge of each protrusion formed between the four locking parts is such that the amount of protrusion becomes gradually smaller or smaller as the amount of protrusion decreases. This is because it has an inclined shape that gradually becomes smaller as it goes up.

The effects of the characteristic configuration of the present invention are as follows.

In other words, if the amount of protrusion of one protrusion between the locking recesses for the lift lock is made gradually smaller in the lowering direction of the ground work device, when lifting the ground work device, the locking member will move away from the locking recess when lifting the ground work device. Although only a small amount of operation is required to pull out the ground work equipment, and the ground work equipment can be lifted quickly, the descending receiving surface of the work equipment can be adjusted by gradually reducing the amount of protrusion of the protrusion when positioning the work equipment when lowering it. It protrudes greatly from the rising receiving surface, and by slightly operating the positioning operating tool when lowering, positioning can be performed immediately.

Also, if the work equipment is relatively light in weight and there is no need to ensure that the work equipment is prevented from falling when ascending,
On the other hand, the amount of protrusion of the protrusion is made gradually smaller toward the upward side, in which case positioning of the working device by the upward operation becomes easier.

In other words, by gradually decreasing the amount of protrusion of the protrusion toward the lower side, the working device can be lifted quickly and the positioning when lowering can be made easy.
Conversely, by gradually decreasing the amount of protrusion toward the rising side,
This makes it easier to position by raising the handle once it has descended to the lowest position.

Embodiments of the present invention will be described below based on the drawings.

The figure shows a tiller, in which a tiller 2 is driven by the output of the engine E mounted on the machine (main machine) 1, a control bundle 3 is attached to this machine 1, and a tiller is attached to the rear of the machine 1. A mounting section 5 is formed for mounting a soil cultivator 4 as a ground work device.

The tilling device 2 has a tilling shaft attached to an axle mounted on the lower part of the transmission case 6, and a tilling claw 2 is attached to the tilling shaft.
a... are attached at appropriate intervals.

Further, at the tip of the frame 4a of the soil cultivator 4, a pitch receiving fitting 7 is formed which engages with a hitch 5 on the machine side.

The frame 4a includes a fixing member connected to the pitch receiving fitting 7, and a mechanism that is rotatable relative to the fixing member 43' around the horizontal axis X, and on which the soil cultivator 4 is mounted in a height-adjustable manner. It consists of a moving frame 4a''.

The fixing member 43' is configured as a fan-shaped locking member when viewed from the side.
A locking recess 8 for a lift lock having parallel opposing surfaces.
... is formed, and the rotating frame 4a
'', an operating bundle 9 is pivoted around a horizontal axis X1 so that it can be rotated within a certain range, and a lever 9a integrally formed with this operating bundle 9 is connected to a pin as an engaging member by means of rods io and io. Further, a spring 12.12, which is an example of a bullet 12, is interposed between the pin 11 and the locking member 4a/, and the tension of the spring 12.12 causes the pin to 11 is biased to engage in the locking recess 8 of the fan-shaped engaging IF member 4a'.

In one embodiment of the present invention having the above configuration, as shown in FIG. 3, the locking recess 8 of the locking member 4a'...
The amount of protrusion of each of the protrusions 13 between the protrusions 13 is made gradually smaller toward the lower side, so that the tip edges of the protrusions 13 move in the upward and downward direction. The structure is such that it is inclined to the opposite direction.

According to such a configuration, when the aircraft reaches the edge of the field, the operator lifts and operates the operation bundle 9, and the bundle lever 9a rotates together with the bundle, and the pin 1
1 from the locking recess 8, and in that state, lower the control bundle 3 attached to the machine 1, and lower the side of the machine 1 on which the tiller 4 is attached, so that the fan-shaped The locking member 4a' is lowered, and the rotating plate 4
a'' and the locking member 4a' rotate relative to each other around the horizontal axis X, and at a desired position, the operation force for lifting the operation bundle 9 is released and the pin 11 is inserted into the locking recess 8. to lock the relative rotation between the machine 1 and the tiller 4, and then lift the control bundle 3 to remove the tiller 4.
It lifts up the.

After turning the aircraft, the cultivating device 4 is lowered by gradually lowering it while holding the operating bundle 9. In this case, when the cultivating device 4 reaches a predetermined position, the operating bundle 9 is lowered. When the soil cultivator 4 is rotated downwardly at a speed faster than the descending speed at which the soil cultivator 4 attempts to rotate around the horizontal axis X under its own weight, the pin 11 is pulled by the springs 12, 12 and moves into the desired locking recess 8. It is to intervene.

In other words, since the projecting portion 13 of the locking member 4a' becomes smaller in the downward direction, the lifting operation of the soil cultivator 4 can be performed by pulling out the pin 11 from the recess 8 by a slight lifting operation of the operating bundle 9. This makes it possible to quickly lift the soil cultivator.

In addition, numeral 14 in the figure is a stopper that regulates the rotation angle of the bundle lever 9a with respect to the soil cultivator 4 when the operating bundle 9 is lifted.

Furthermore, in order to position the soil cultivator 4 at the time of descending, the descending receiving surface 13 of the lower protruding part among the protruding parts 13...
a is the rising receiving surface 13b of the upper protrusion 13...
Since the pin 11 protrudes further than the pin 11, it is easy to engage the pin 11 in the lower locking recess 8 when the pin 11 is lowered, and the positioning operation can be easily performed.

In addition, when using a plow tool (not shown) instead of the soil cultivator 4, each of the protrusions 13 formed between the locking recesses 8... In order to gradually reduce the amount of protrusion toward the upward direction, it is preferable to attach the hitch holder 7 to the hitch 5 upside down.

In this case, the position of the stopper 14 is changed.

In this way, by gradually decreasing the amount of protrusion of the protrusion 13 toward the upward direction, the shape of the locking member 4a' becomes a shape that is an inversion of FIGS. This makes it easier to position by raising the handle after descending to the lowest position.

In addition, as a means for releasing the lock between the locking member 4a' and the locking member 11, a grip lever on the operating bundle 9 is configured so that it can be moved from or near by gripping the lever, and the locking state is released by operating this lever. Good too.

[Brief explanation of drawings]

The drawings show an embodiment of a Taylor-type cultivator according to the present invention, and FIG. 1 is an overall side view, FIG. 2 is a partially sectional plan view of the main part, and FIG. 3 is a partially sectional side view of the main part. It is a diagram. 1... This machine, 4... Ground work device, 4
a'...Locking member, 8...Locking recess,
12... Bullet machine.

Claims (1)

[Claims] 1. A locking recess for raising/lowering lock in which the ground work device 4 is configured to be able to move up and down with respect to the machine 1, and has a facing surface parallel to the locking member 4a' attached to the machine 1 or the ground work device 4. A plurality of locking recesses 8 are provided, and the locking member 11 attached to the ground work device 4 or this machine 1 is inserted into the locking recess 8.
A bullet 12 is interposed between the engaging member 11 and the locking member 43' to urge it in the direction of engaging with...
In order to make it possible to manually lift and lower the ground work device 4, the engagement member 11 is inserted into the engagement recess 8.
- In a Taylor-type cultivator configured to be disengageable, the protruding edges of each protrusion 13 formed between the locking recesses 8... A Taylor-type cultivator characterized by having an inclined shape in which the amount of protrusion gradually decreases as it descends or gradually decreases as it rises.