JPH0337367Y2 - - Google Patents

Description

[Detailed description of the invention] This invention relates to the structure of a sub-leveler that is pivotally attached to the side part of the main leveler, and it can perform both leveling work and earth grading work well, has a simple structure, and is easy to handle. The object of the present invention is to obtain a leveler device that is extremely easy to use.

Conventionally, this type of device has a main leveler with a reinforcing pipe fixed to its upper part, and a sub-leveler having another reinforcing pipe at the upper part inserted into the main leveler, which is inserted into the main leveler, with their working surfaces aligned. In some cases, the sub-leveler is fitted and installed to level the position, while when performing soil levying work, the sub-leveller is pulled outward from this fitting part, rotated forward, and then reinserted into the main leveler and fixed. but,
In such a device, the structure of the pivot portion is complicated, and it is troublesome to switch between uniform work and earth-covering work.

This invention was proposed in view of the above problems, and took the following technical measures.

That is, in a leveler device in which a sub-leveler 18 is provided on the side of the main leveler 15, and the sub-leveler 18 is rotatably pivoted around fulcrums 21 provided at both rear ends of the main leveler 15, both levelers 15,
18 includes a plate-like body 15b of each leveler 15, 18,
Pipe-shaped reinforcing members 16 and 19 having the same width as 18b are fixedly provided on the upper parts of the plate-like bodies 15b and 18b, so that the soil working surfaces of the plate-like bodies 15b and 18b of each leveler 15 and 18 are approximately flush with each other. When the sub-leveller 18 is rotated forward, the ends of the reinforcing members 16 and 19 are in contact with each other with almost no gap, and when the sub-leveller 18 is rotated forward, the ends of the reinforcing members 16 and 19 are partially in contact with each other in the left and right direction. The leveler device is characterized in that one of the reinforcing members 19 is cut out diagonally so that the tip thereof becomes sharp when viewed from above.

An embodiment of this invention will be described below based on the drawings.

First, to explain the structure, 1 is a rotary tiller, 2 is a prismatic pipe-shaped frame attached to a hitch 3, and this frame 2 is movable back and forth with respect to the hitch 3. , a pipe 6 is fixed, and stays 5, 5 for supporting the leveler 4 are pivotally attached to the outer side of the pipe 6.

Further, an adjustment rod 7 is pivotally attached to the rear end of the frame 2 so as to be able to swing back and forth about a fulcrum 8, and a stopper 9 made of a cylindrical pipe is fixedly provided at the lower end of the adjustment rod 7. On the other hand, a spring 10 is wound around the upper end, and a rod 11 having a locking collar 12 is pivotally connected to the front end. 13 is a mast that supports this rod 11;
A stopper 14 for stopping the reciprocating movement of the rod 11 in the axial direction is rotatably attached to the rod 3.
As shown in FIG.
When the notch provided in the stopper 14 enters, the back and forth movement of the rod 11 is restricted, and when the stopper 14 is rotated clockwise to stand up, the notch in the stopper 14 engages the locking collars 12, 12 of the rod 11. The structure is such that the pressing force of the spring 10 acts directly on the stays 5, 5 via the adjusting rod 7 and the stopper 9.

15 is a main leveler attached to the lower part of the stays 5, 5, and the plate-shaped body 1 of this main leveler 15
5b, a reinforcing pipe 16 is fixed to the upper part, and two upper and lower boards 1 are welded to the back side of both ends of the reinforcing pipe 16.
7 and 17, an arm rod 18a of the sub-leveler 18 is pivotally connected. Plate body 18 of sub-leveler 18
A reinforcing pipe 19 is also fixed to b, and as shown in FIG. The cutout is made diagonally away from the end face of the pipe 16 to form a relief part 20 here. There is almost no gap between the front edges of both pipes 16 and 19 during leveling work, and the above-mentioned escape section 20 is used as a sub-leveler 18 for performing earth-filling work, as shown in FIG.
When rotated forward about the fulcrum 21,
Pipe 16 of main leveler 15 is sub-leveler 18
A space is formed to the extent that the pipe 19 does not come into contact with the pipe 19. Reference numerals 22 and 23 indicate through holes drilled in the substrate 17, and when the pin 24 is inserted by matching the hole of the arm rod 18a (not shown in the drawing) to the through hole 22, the working surfaces of the main leveler 15 and the sub-leveler 18 become substantially in a straight line. When the pin 24 is inserted into the through hole 23, only the sub-leveler 18 is rotated forward and is fixed in a state where it can be raised.

Reference numeral 25 in the figure is a stopper that restricts the forward rotation of the stays 5, 5, and when the rotary tillage device 1 is rotated upward, the stays 5, 5 come into contact with this stopper 25 and are stopped. 5,5
The structure is such that it does not approach the rotary tilling device 1 any further.

26 is a spring suspended between the stays 5, 5 and the pipe 16 of the main leveler 15;
7 is the tail wheel. The tail wheels 27, 27 are usually used by inserting their supports into pipes 28, 28 provided on the left and right sides of the hitch 3, but the rear cover 29
In the case of so-called tailwheel-less automatic tillage work, in which the tiller is brought into sliding contact with the ground, this tailwheel 2
7 and 27 and move the frame 2 of the leveler 4 forward.

Since this invention is constructed as described above, it has the following technical effects. That is, main leveler 15,
Both the sub-leveller 18 and the plate-shaped body 15 forming the soil working surface
Pipe-shaped reinforcing members 16, 19 having a length equal to the width of the plate-shaped bodies 15b, 18b are fixedly provided on the upper parts of the plate-shaped bodies 15b, 18b, so that the thin plate-shaped bodies 15b, 18b
deformation can be suppressed and sufficient strength can be ensured. In addition, one member 19 on the side where both reinforcing members 16 and 19 are in contact is cut diagonally so that the tip thereof is sharp, so that the plate-like body 15b of the main leveler 15 and the plate-like body 18b of the sub-leveler 18 are flush with each other. When rotated to , both reinforcing members 16,
There is almost no gap between the reinforcing member 19, and when the sub-leveller 18 is rotated forward, the reinforcing member 1
Since the ends of 6 and 19 are partially overlapped in the horizontal direction, less soil flows out from between the main leveler 15 and the sub-leveler 18 during leveling work and earth-filling work, resulting in a beautiful soil surface after work. .

Moreover, since the extremely simple method of cutting the ends of the pipe-shaped reinforcing members 19 and 16 diagonally is adopted, the manufacturing cost of the entire device can be reduced.

[Brief explanation of the drawing]

The figures show one embodiment of this invention, with Fig. 1 being a side view, Fig. 2 being a plan view, Figs. 3 and 4 being plan views of the main parts, Fig. 5 being a rear view, and Fig. 6 being a FIG. 7 is a plan view of another embodiment. Explanation of symbols: 1... Rotary tillage device, 2... Frame, 15... Main leveler, 18... Sub-leveler, 16, 19... Reinforcement member (pipe).

Claims (1)

[Scope of utility model registration request] In a leveler device in which a sub-leveler 18 is provided on the lateral side of the main leveler 15, and the sub-leveler 18 is rotatably pivoted around fulcrums 21 provided at both rear ends of the main leveler 15, both levelers 15 and 18 have respective levelers. 15, 18 plate-like bodies 15b, 18b
Pipe-shaped reinforcing members 16 and 19 with the same width as plate-shaped body 1
5b, 18b, each leveler 1
When the plates 15b and 18b of No. 5 and 18 are rotated so that their earth working surfaces are substantially flush with each other, the ends of both reinforcing members 16 and 19 touch with almost no gap, and the sub-leveler 18 is moved forward. In order for the ends of the reinforcing members 16 and 19 to partially overlap in the left-right direction when the reinforcing members 16 and 19 are rotated to leveler device.