JPH0441776Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Field of Application] This invention relates to a ridge forming machine that hammers and forms the top and side surfaces of ridges.

[Prior Art] Conventionally, this type of device scrapes off the sides and bottom of the ridge using rotating claws or a cutting body such as a spiral, heaps the excavated soil into the ridge, and then removes the soil from the ridge. The ridges are press-formed by vertically swinging a molding plate having a shape substantially equal to the cross-sectional shape.

For example, there is a structure disclosed in Japanese Utility Model Application Laid-open No. 60-57906.

[Problems to be solved by the invention] The molded plate described in this publication has a ridge-shaped plate attached to the lower part of the piston rod so as to be freely deflectable, and springs are attached to both ends of the plate. be.

In this device, hydraulic oil sent out by a hydraulic pump flows into a hydraulic cylinder to move a piston rod forward and backward, and in the process of reciprocating, the molding plate is swung up and down to form ridges.

Such devices have the drawback of high manufacturing costs because of the use of hydraulic equipment such as hydraulic cylinders and hydraulic pumps.

Moreover, since such devices are not equipped with a mechanism to change the stroke of the piston rod, depending on the amount of soil removed by the cutting device or the soil quality, the top and side surfaces of the ridge may change. There is a drawback that it cannot be press-molded uniformly.

[Technical means for solving the problem] This invention was proposed in view of the above-mentioned problems, and the following technical means were taken.

That is, a ridge cutting device 25 that cuts the side and bottom portions of the ridge, and a forming plate 24 that is connected to the rear of the ridge cutting device 25 and press-forms the top and side surfaces of the ridge.
and a swinging mechanism 50 that swings the molded plate 24 in the vertical direction. The molding plate 24 is pivotally supported in the lower part so as to be able to swing around a fulcrum 34, and a spring 35 is provided between the molding plate 24 and the swinging rod 23.
36 is interposed therein, and the upper end of the swinging rod 23 is configured to be detachably attached to a plurality of attachment positions at different distances from the center of rotation of the disk 21. It is something.

[Embodiments and their effects] Hereinafter, embodiments of this invention will be described based on the drawings. First, to explain the configuration, reference numeral 1 indicates the back side of the entire ridge forming machine, and this ridge forming machine 1 is connected to the rear of a tractor (not shown) via a 3P link device so as to be able to move up and down.

Reference numeral 2 designates a mast for attaching the top link constituting the 3P link device, and 3, 3 designates pins projecting laterally from both sides of the lower part of the mast 2 to connect the rear ends of the lower links.

Further, 4 and 5 are frames supporting the ridge forming machine 1, and between the frame 4 extending in the left and right direction and the frame 5 extending diagonally backward, there is a frame bent in a U-shape when viewed from the back. Pedestals 6 and 7 are installed in the front-rear direction. Reference numeral 8 is a bearing metal installed on the upper part of the pedestal 6, on which the input shaft 9, which is driven by receiving power from the PTO shaft at the rear of the tractor, is mounted so as to face forward.

10 is a gear box, this gear box 10
is fastened to the front surface of a plate 11 fixed on one pedestal 7 with bolts 12.

Sprockets 14 and 15 are attached to the front and rear parts of a transmission shaft 13 that extends through the gearbox 10 in the front-rear direction, and a plate 16 erected on the pedestal 7 and an upper surface of one side of the frame 5 are attached to the sprockets 14 and 15. The shaft 1 is placed between the upright plate 17.
A chain 20 is wound between a sprocket 19 fixed to the shaft 18 and a rear sprocket 15 on the transmission shaft 13.

A disc 21 is attached to the rear end of the shaft 18, and a pin 22 protrudes from the rear outer peripheral edge of the disc 21.
A swinging rod 23 is pivotally fixed to the ridge, and a molding plate 24 is attached to the lower end thereof to swing and press the upper and inner surfaces of the ridge at the same time. The disk 21 and the swinging rod 23 constitute a swinging mechanism 50.

The disc 21 is provided with a plurality of holes 22a at different distances from the center.
By appropriately selecting and fixing the pins 22 to a, the swinging stroke of the swinging rod 23 is changed.

25 is a ridge cutting device, and this ridge cutting device 2
Reference numeral 5 comprises a rotating shaft 26, rotating claws 27, and a cover 28 that covers these.

The rotating shaft 26 is provided in a plane substantially orthogonal to the direction of movement of the aircraft body, and is configured to be inclined downward as it reaches the outer side in the lateral direction when viewed from the back,
The rotating shaft 26 has rotating claws 27a, the outer periphery of which is curved outward to scrape the bottom of the inner side of the ridge, and a rotating claw 27a, which is provided at the end of the shaft and whose outer periphery is curved inward to scrape the inner surface of the ridge. A rotating claw 27b is attached. The plurality of rotating claws 27a are configured such that the radius of rotation becomes smaller toward the outer side. Further, numeral 30 denotes a cylindrical body that penetrates and holds the swinging rod 23, and its intermediate portion is supported by an arm rod 31 extending from the upper rear surface of the cover 28.

The swinging rod 23 is divided into three parts in the longitudinal direction, and consists of an upper swinging rod 23a, a middle swinging rod 23b, and a lower swinging rod 23c, and the upper swinging rod 23a and the middle swinging rod 23b are bent. Pivotally connected to enable
Further, a cylinder 32 is fixed to the lower end of the middle swinging rod 23b, and inside this cylinder 32 is the lower swinging rod 23b.
c is fitted and supported via a spring 33 so that it can move up and down.

A shaft 34 extending in the front-rear direction is provided at the end of the lower swinging rod 23c to pivotally support the shaping plate 24, and further includes an upper outer end and a lower inner end of the shaping plate 24 and an outer periphery of the cylinder 32. As shown in FIG. 1, two springs 35 and 36 are interposed and connected between the two springs 35 and 36.

Reference numeral 37 denotes a long hole, which is bored in an upright piece 38 provided at the rear end of the molded plate 24. The mounting position relative to the base plate 39 pivotally mounted on the rotation shaft 34 can be slid within the range of the elongated hole 37.

In the figure, reference numeral 40 is a sprocket fitted to the input shaft 9, 41 is a chain, 42 is a chain case, and 43 is a rubber provided at the rear of the molded plate 24.

Next, the operation of the above example will be explained.

When this ridge forming machine 1 is connected to a power agricultural machine such as a tractor and moves forward while driving each rotating part, the inner surface of the ridge and the bottom surface of the ridge hem are simultaneously cut by the counter-rotating claws 27a, . . . 27b. be done. FIG. 1 shows this state. The bottom surface of the ridge bottom is finished in a substantially horizontal shape by the claws 27a, and the cut soil is guided by the inner surface of the cover 28 and carried backward. It can be turned around. Furthermore, the side surface of the old ridge is cut linearly by the claw 28b on the outer end of the rotating shaft 26. Then, the scraped soil is guided to the inner surface of the cover 28 and placed on the upper and inner surfaces of the ridge in the form of an embankment, and the molded plate 2 swings little by little in the vertical direction.
4, the upper and side surfaces of the ridge are pressed and shaped at the same time.

At this time, the molded plate 24 is configured to be rotatable left and right about the shaft 34, but both ends and the swinging rod 2
Since springs 35 and 36 are interposed between 3 and 3, this molded plate 24 rotates according to the filling condition of the top surface of the ridge, and uneven force from the ground is applied to the molded plate 24. However, this force can be alleviated, and as a result, the upper surface and inner surface of the ridge can be compressed substantially uniformly.

In addition, when there is a large amount of soil to be piled up on the top and inside surfaces of the ridge, or depending on the amount of moisture contained in the soil, it may be necessary to change the operating stroke of the swinging rod 23. The pin 22 attached to the disc 21 is removed and inserted into another hole 22a to change the pivot position of the swinging rod 23.

In this case, if the amount of adjustment of the operating stroke is too large, the molding plate 24 may come into strong contact with the upper surface or inner surface of the ridge, deforming a part of the molding plate 24. However, in this embodiment, Molded plate 24
Since the two springs 35 and 36 and the spring 33 inside the cylinder act to absorb and soften the impact, deformation of the molded plate 24 can be prevented.

[Effects of the invention] As described above, this invention includes the ridge cutting device 25 that cuts the sides and bottom of the ridge, and the ridge cutting device 25.
A molding plate 24 that is connected to the rear of the ridge and press-forms the upper surface and side surface of the ridge, and a swinging mechanism 50 that swings this molding plate 24 in the vertical direction, the swinging mechanism 50
is a disc 21 and a swinging rod 23 whose upper end is pivotally connected to the disc 21.
The molded plate 24 is swingably supported at the lower part of the swinging rod 23 about a fulcrum 34, and springs 35, 36 are provided between the molded plate 24 and the swinging rod 23. This is because the ridge forming machine is characterized in that the upper end of the swinging rod 23 is configured to be detachably attached to a plurality of attachment positions at different distances from the center of rotation of the disk 21. Compared to a system in which the forming plate 24 is oscillated by a hydraulic mechanism, the structure is simpler and an inexpensive ridge forming machine can be provided.

In addition, it may be necessary to adjust the operating stroke of the rocking mechanism 50 depending on the amount and softness of the soil piled up on the top and inside surfaces of the ridge. Pin 22 to be attached
Since all you need to do is change the position of the machine, adjustments can be easily made during work, and the adjustment work can be done in a short time, significantly improving operability.

Depending on the amount of adjustment of the operating stroke, the forming plate 24 will receive a force from the soil that tries to deform it, and a bending load will be applied, but the splinters 35 and 36 can bend to alleviate this force. Therefore, the molded plate 24 does not deform and has the feature that the upper surface and inner surface of the ridge can be pressed almost uniformly at all times.

[Brief explanation of the drawing]

The figures show an embodiment of this invention; FIG. 1 is a rear view, FIG. 2 is a plan view, and FIG. 3 is a power transmission diagram. Explanation of symbols, 1...Ridge cutting device, 21...Disc, 23...Swinging rod, 24...Forming plate, 35...
Spring, 36... Spring, 50... Rocking mechanism.

Claims (1)

[Scope of utility model registration request] A ridge cutting device 25 that cuts the sides and bottom of the ridge.
A forming plate 24 that is connected to the rear of the ridge cutting device 25 and press-forms the upper and side surfaces of the ridge, and a swinging mechanism 50 that swings the forming plate 24 in the vertical direction.
The swinging mechanism 50 includes a disc 21 and a swinging rod 23 whose upper end is pivotally connected to the disc 21.
The molded plate 24 is placed at the bottom of the molded plate 24 with the fulcrum 34 as the center.
is pivotably supported, and this molded plate 24
Springs 35 and 36 are interposed between the swinging rod 23 and the swinging rod 23, and the upper end of the swinging rod 23 is connected to the disk 2.
A ridge forming machine characterized in that it is configured to be detachably attached to a plurality of attachment positions at different distances from a rotation center.