JPH0347445Y2 - - Google Patents

Description

[Detailed description of the invention] The present invention enables a working device equipped with a trencher to be grounded on a hard roadbed for repair and inspection work, etc., and furthermore, when the working device is lowered, To prevent the groove maker from being destroyed by contact with the hard roadbed, the groove maker is raised from a downwardly protruding working position to a non-protruding position relative to the ground support for setting the grooving depth. The present invention relates to a groove cutting section of an agricultural vehicle in which a recessed portion is freely provided and is formed by opening the groove cutting device downwardly and rearward for supplying powder and granular material to a field.

Conventionally, in the trench cutting section of the agricultural vehicle mentioned above, structural consideration has not been taken to remove mud adhering to the trench cutting device, so if the work is interrupted for a long time due to breaks or moving around the field, the trench cutting device will be damaged. Adhering mud may dry and stick, and the stuck mud will substantially narrow the recess for supplying powder and granules, making it difficult to smoothly feed the powder when the supply of powder is restarted. The disadvantage was that it could no longer be supplied.

In view of the above-mentioned drawbacks, it is an object of the present invention to make a rational and simple improvement that effectively utilizes the original structure so that the concave part of the groove cutter for supplying powder and granular material does not become narrow due to the fixation of mud.

The characteristic configuration of the groove maker for agricultural vehicles according to the present invention is as follows:
A scraper is provided to remove soil in the recess as the trencher moves up to the non-projecting position, and its effects are as follows.

In other words, by simply installing a scraper, the original structure of the groove maker can be moved upward from the working position to the non-protruding position when work is interrupted, and this can be used to effectively remove the deposits in the recesses of the groove maker. Mud can be reliably removed by the relative movement of the scraper and trench cutter when work is interrupted, and powder and granules can always be smoothly and stably supplied to the field without being adversely affected by mud sticking in the recesses. I started to do that.

Next, an example of the configuration of the present invention will be described.

As shown in FIG. 1, an engine 3 and a boarding/driving unit 4 are disposed on a vehicle body equipped with a pair of left and right drive steering wheels 1 and drive wheels 2, and a seedling platform 6 driven by the engine 3 is provided at the rear of the vehicle body. A seedling planting device 9 equipped with a seedling planting claw 7 is attached to a hydraulic cylinder 10 so as to be able to be raised and lowered via a parallel quadruple link mechanism 11, and three soil leveling floats 5 as ground supports are arranged side by side on the left and right. However, there is a riding-type vehicle in which the seedling planting depth is maintained within a set range by automatically operating the hydraulic cylinder 10 using a control valve (not shown) based on changes in the ground pressure of the central soil leveling float 5. It is configured as a rice transplanter.

A main tank 13 for storing fertilizer is attached to a support arm 12 fixed to the vehicle body, and a sub tank 1 has a discharge pipe 14 of the main tank 13 attached to a seedling planting device 9.
Slideably insert it into the lid of 5, and then insert the sub tank 1.
The drive shaft P ₁ of the fertilizer dispensing device 16 of No. 5 and the drive shaft P ₂ of the fertilizer dispensing device 17 of the main tank 13,
A belt-type transmission mechanism having relay pulleys attached to arms 18, 18 that can bend and extend around the axis _P3 connects the seedlings so that the spacing can be changed freely. The main tank 13 and the sub tank 15 are allowed to move relative to each other, and the fertilizer is delivered from the main tank 13 in an amount commensurate with the amount of fertilizer delivered from the sub tank 15.
The configuration is such that fertilizer can be supplied in just the right amount to No. 5.

As shown in FIG. 3, a fertilization recess 29 that is open downward and backward is formed in the furrower 20,
Connect the discharge part and recess 29 of the sub-tank 15 to the hose 21.
The grooves are connected to each other, and the grooves are connected to each other so that the grooves for fertilization are formed by the groove creator 20, and at the same time, the fertilizer is allowed to flow down into the grooves.

As shown in FIGS. 2 to 4, the front end of the groove maker 20 is attached so as to be vertically swingable around the horizontal axis _P4 , and the groove maker 20 has an L-shape in side view, and its width is the same as that of the groove maker 20. scraper 22 whose inner width is approximately equal to ₁ of 20;
is inserted from the rear opening of the trencher 20 so as to be slidable relative to both side walls of the trencher 20, and fixed to the leveling float 5 via the inverted L-shaped member 27 and the fixing member 28. Therefore, by vertically swinging the trencher 20, mud adhering to both inner side walls of the trencher 20 is scraped downwards by sliding relative to the scraper 22. .

To connect the inverted L-shaped member 27 and the scraper 22, a thumbscrew 26 is passed through an elongated hole formed in the member 27 and screwed into the ground leveling float 5 of the scraper 22.
The structure is such that the mounting position can be changed freely.

On the other hand, a wire 24 connected to an operating lever 23 of a seedling planting clutch (not shown) that intermittents the drive of the seedling planting device 9 is connected to the furrower 20, and the wire 24 is pulled by cutting the clutch. When the clutch is engaged, the wire 24 is loosened, and a coil spring 25 is provided between the mounting member 28 and the groove cutter 20 to bias the groove cutter 20 downward, and then the seedlings are planted. When the device 9 is operated to stop driving, the wire 24 is pulled and the trencher 20 is pulled up against the spring 25 to a position above the bottom surface of the float 5. On the other hand, when the seedling planting device 9 is operated, the wire 24 is loosened. The spring 25 is biased so that it is locked in a position where it contacts the scraper 22, and the groove depth can be changed by changing the mounting position of the scraper 22.

Incidentally, when forming the scraper 22, the groove making device 20 is used.
For example, if the shape scratches the inner side wall of the groove cutter 20,
The contact portion may be formed into a spatula shape, a claw shape, etc., or may be composed of two rod-like members that contact only both side walls of the groove creator 20, and the structure and shape can be changed as appropriate. It is.

In addition, a tiller equipped with a tail wheel for following the field as a ground supporting body may be equipped with a seeding device so as to sow seeds into the grooves formed by the furrower while cultivating. The seeds, medicines, fertilizers, etc. may be supplied into the grooves, and these seeds, medicines, fertilizers, etc. are collectively referred to as granular materials.

The present invention can be applied to the groove cutting section of agricultural vehicles of various types and specifications.

[Brief explanation of the drawing]

The drawings show an embodiment of the groove-cutting part of the agricultural vehicle according to the present invention, and FIG. 1 is an overall side view, FIG. 2 is a plan view of the soil leveling float, FIG. 3 is a partially cutaway side view of the soil leveling float, and FIG. The figure is a sectional view of the main part. 5...Grounding support body, 20...Groove cutter, 22...
Scraper, 29... recess.

Claims (1)

[Scope of utility model registration request] A trencher 20 is provided so as to be able to rise freely from a downwardly projecting working position to a non-projecting position with respect to the ground support 5 for setting the trenching depth, and for supplying powder and granules to the field. The recess 29 is formed by the groove making device 2.
The agricultural vehicle is formed with an opening facing downward and rearward at 0, and is equipped with a scraper 22 for removing soil in the recess 29 as the trencher 20 rises to a non-projecting position. Groove section.