JPH035207Y2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a tiller in which a rotary tiller is connected to a traveling machine body so as to be operable up and down, and the tiller is provided with a cover for leveling the ground behind the rotary.

Conventionally, in this type of tiller, if the tiller is lowered while the tiller is stopped at the start of work, the rotary is not moved compared to when the tiller is running, which increases the tilling resistance, and when the tiller is at the start of work. The area where the soil must be cut is wider than the area where tilling has progressed, and the tilling resistance is greater.Furthermore, the rotary has a characteristic of trying to bury itself into the soil, and the target depth of the descending operation is As a result, the rotary drive load increased significantly, causing the engine to stop.

The purpose of this invention is to prevent the engine load from increasing significantly even if the tilling device is lowered while the vehicle is stopped, and also to make the work more efficient and to achieve a good finish with a simple structure. The goal is to make sure that you get what you want.

The characteristic configuration of the present invention is that the above-mentioned tiller includes a grounding body that supports the tilling device 4 so that it cannot be lowered when it comes into contact with uncultivated land, and allows the tilling device 4 to descend when it comes into contact with cultivated land. , is located directly behind the rotary, and the ground contact side is located in front of the soil leveling part of the soil leveling cover, and furthermore, the lower end is located at a higher level than the lower end of the rotary, and can be raised and lowered integrally with the tilling device. Its functions and effects are as follows.

In other words, even if the tiller is lowered while the rotary is stopped, the grounding body will touch the hard uncultivated land behind the rotary, and the lowering of the tiller will be regulated so that the depth of entry of the rotary is shallower than the target depth of the lowering operation. . Therefore, it is possible to prevent the rotary from penetrating deeply into the soil due to its penetrating characteristics, preventing a significant increase in engine load, and allowing work to start smoothly without causing engine stoppage. I was able to.

Moreover, the grounding body easily penetrates into the soil with little resistance in soft areas of tilled land, and does not interfere with the descent of the tillage device to the target depth.
This eliminates the need to remove the grounding body or raise and evacuate the ground even after tilling has progressed. By the way, if you leave the grounding body in the soil, a groove will remain after the grounding body passes, but by positioning the grounding side of the grounding body in front of the grounding part of the earth leveling cover, it is possible to prevent the grounding body from passing through. Since the grooves are backfilled by the soil leveling action of the cover, it is possible to prevent grooves from remaining after plowing due to the passage of the grounding body, and it is also possible to eliminate the need to provide a special groove backfilling tool for this purpose. Overall, we were able to perform work with a good finish with a simple structure and efficiency.

Embodiments of the present invention will be described below with reference to the drawings.

As shown in FIG. 1, a rotary tiller 4 is hydraulically raised at the rear of the wheeled traveling body 1 via a link mechanism 3 that can be driven vertically by a single-acting hydraulic cylinder 2. In addition, the riding tiller is configured such that it is connected so that it can be raised and lowered so as to be lowered by its own weight, and that power is transmitted from the traveling machine body 1 to the tilling device 4 via the rotating shaft 5.

As shown in FIG. 2, a portion 6 of the rotary cover of the tillage device 4, which also serves as land leveling for the rear of the rotary, is pivotally connected to the other portion 7 so that it can swing up and down around an axis _P1 . At the same time, the tilling device 4 is biased downwardly by the spring 8 so that the free end comes into contact with the ground, and the position of the detecting part 6a, which is extended from the rear cover part 6 so as to be able to swing integrally, with respect to the cover part 7, makes it possible for the tilling device 4 to touch the ground. It is configured to detect height. Then, the detection section 6a is
Interlocking pin 9 slidably inserted into this elongated hole 16
a, and a spring 12 which is interlocked with the swinging operating member 11 of the control valve 10 of the cylinder 2 via the push-pull release wire 9 and biasing the operating member 11 to the lower operating position. It is configured such that the height detected by the rear cover part 6 is within the set range, and the height of the tilling device 4 from the ground is maintained within the set range regardless of the back and forth rocking of the traveling machine, and the tilling depth is maintained within the set range. It is designed so that you can work while keeping the temperature almost constant.

As shown in FIG. 2, the grounding rod 12 is attached to the rear cover portion 6 so that the grounding side thereof is located forward of the grounding portion of the rear cover portion 6, and the lower end is located at a higher level than the lower end of the rotary 4a. The boss portion of the support arm 13 extends from the body of the tillage device and is placed immediately behind the rotary 4a while being inserted through the notch hole of At 13a,
The vertical sliding operation and the fixing by the lock screw 14 are freely connected to move up and down together with the tilling device 4, and when starting work, while the traveling body 1 is in a stopped state, the rear cover portion 6 When the tiller 4 is lowered by enabling the control valve 10 to be operated, the first
As shown in the figure, the grounding rod 12 is in contact with the hard uncultivated land, and the tilling device 4 is supported to prevent it from descending to the target depth controlled by the rear cover portion 6, resulting in the rotary 4a digging deep into the soil. The structure is designed to prevent an increase in the rotary drive load, and as the work progresses and the grounding rod 12 comes into contact with the cultivated land as shown in Figure 2, the cultivated land has a softer ground contact than the non-cultivated land. Since the entry resistance of the rod 12 is small, the ground rod 12 is in a state that allows the tilling device 4 to descend to the control target depth, so the tilling depth can be increased without removing the earth rod 12 or raising and retracting it. The structure is such that work can be carried out while maintaining the ground depth at a desired depth and backfilling the passage groove for the grounding rod 12 by the ground leveling action of the rear cover portion 6.

The operating lever 17 shown in FIG. 2 is used to manually raise and lower the cultivating device 4 by operating the swing operating member 11 by touching it, and the operating lever 18 is used to manually raise and lower the cultivating device 4. The control target depth is changed and set by adjusting the movement and fixing it at the adjustment position.

The grounding rod 12 can be changed to a ring body, and these are collectively referred to as the grounding body 12.

The present invention can also be applied to a structure in which the tilling device 4 is raised and lowered by manual operation of the control valve 10.

[Brief explanation of the drawing]

The drawings show an embodiment of the tiller according to the present invention, and FIG. 1 is a side view of the rear part of the riding tiller, and FIG. 2 is a side view of the elevating control structure of the tiller. 1... Traveling machine body, 4... Tilling device, 4a... Rotary, 12... Grounding body.

Claims (1)

[Scope of utility model registration request] The tiller is a tiller in which a rotary tiller 4 is connected to a traveling machine body 1 so as to be able to be raised and lowered, and a cover 6 for leveling the ground behind the rotary 4a is provided on the tiller 4, and the tiller 4 can be raised or lowered by contacting non-cultivated land. A grounding body 12 that supports the tilling device 4 so that it cannot be lowered and allows the tilling device 4 to descend when it comes into contact with already cultivated land is located immediately behind the rotary 4a, and the grounding side is the soil leveling part of the ground leveling cover 6. A cultivator that is mounted to the tiller 4 so as to be able to move up and down integrally with the tiller located further forward and further with its lower end located at a higher level than the lower end of the rotary 4a.