JPS594081B2 - Tsuchiyosesagiyouno Kanounashirokakisouchi - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a scouring device capable of scouring work, and in particular, the leveling plate used for scouring can be raised and lowered freely so that it can also be used as a scouring plate when it is locked in the upright position. ,
By providing the above-mentioned ground leveling plate with a rolling action that allows it to swing up and down like a seesaw in its longitudinal direction, the earth pressure applied to the ground leveling plate mainly at the edge of the ridge during plowing work can be suitably released, and This is to prevent problems such as the leveling board riding up on the edge of the ridge.

Generally, as a plowing device, it is known that the leveling plate that contributes to the leveling of the plowing is made to be able to rise and fall freely, and when the leveling plate is locked in the upright position, the leveling plate becomes a groin board, but conventional plowing devices of this kind are In this case, the structure is simply such that the leveling plate can be raised and lowered, and the raising and lowering action is ensured by a cam interposed between the control lever and the operating lever at a close position facing the center of rotation of the leveling plate. Because of the structure, the earth pressure and other loads borne by the ground leveling plate directly act on the cam, which weakens the undulating structure of the leveling plate including the cam, which has the disadvantage of being inferior in terms of strength and labor. be.

If the leveling plate is equipped with a comb blade, the comb blade will stick into the soil surface during the upright and locking process, and this will cause the durability of the leveling plate to deteriorate due to the undulating structure described above. At the same time, it is difficult to perform plowing work at the edge of the ridge, and the leveling plate climbs up on the soil surface, making it impossible to obtain a suitable plowing and leveling effect. However, in the case of conventional puddling devices, the ground leveling plate does not have a configuration that allows it to perform a rolling motion that allows it to swing up and down like a seesaw in its longitudinal direction, and the above-mentioned undulations Since the structure and support structure could only swing up and down by the amount of backlash commensurate with the mutual fit between the hole and the shaft, it was not possible to obtain the appropriate leveling effect at the edge of the ridge as described above. Met.

The present invention has been devised to solve all of these problems, and therefore, as a raking device that can perform earth surging work, a ground leveling plate is attached to the rear of a tractor-pulled work machine via a suspension member, and the same In a device in which the ground leveling plate can be locked in a manner that allows it to be raised or lowered, the above-mentioned hanging member is attached to a support rod extending in the front-rear direction of the tractor body, and to the front end of the support rod, there are six pivotally connected via spherical grips. It consists of a rolling rod that extends rearward as a shape, and a pressing rod with a spring that is pivotally connected in the middle of the rolling rod and is erected to penetrate the rear end of the support rod. A leveling plate mounting bracket is attached to the rear end that swings around the rolling rod as a pivot, and a pivot inserted into the bracket from a direction perpendicular to the rolling rod allows the leveling plate to be rotated and raised and lowered. The present invention is characterized in that, when attached, the leveling base plate is configured to be able to roll vertically in a seesaw-like manner over its longitudinal direction.

The present invention will be specifically described below based on the illustrated embodiments.
1 is a rotary working machine attached to a tractor body (not shown) via a link mechanism 2 such as a three-point suspension system, and is suspended so that it can be raised and lowered by a hydraulic lifting device (not shown) of the tractor body; 4 is the rotary cover, 5 is the support frame of the rotary work machine 1, and 6 is the rotary chain case.
is a rear two-wheel support rod that is pivotally connected to the support frame 5 and extends rearward; two rear wheels 7 are suspended from the rear end of the support rod 6; The plowing depth of the rotary work machine 1 can be adjusted.

Reference numeral 8 denotes a suspension member for suspending a ground leveling plate, which will be described later. This includes a pair of left and right rolling rods 8a that are inclined in the front and back direction and are parallel to each other, and a pivot member 8 that extends from the middle of the rolling rods 8a. Similarly, a pair of left and right pressing rods 8 are erected on supports.
b, and a pair of left and right horizontal support rods 8c pivotally connected to the front end of the rolling rod 8a via spherical handles 9,
A large number of bottle holes (not shown) are vertically arranged in the pressing rod 8b, and an insertion opening (not shown) for the pressing rod 8b is formed in the rear free end of the supporting rod 8C. By passing the pressing rod 8b through this insertion opening, it is formed into a substantially right triangular shape when viewed from the side as shown in FIG.

The suspension member 8 is arranged at such a pitch that a suspension rod 8d, which is fixed in a horizontal structure and protrudes between the left and right pairs of the support rods 8c, is removably engaged with the rear end of the rear two wheel support rod 6. Metal fittings 1
By being integrally connected to 0, it can be attached to suspend the ground leveling plate.

Further, reference numeral 11 denotes a spring wound around the upright pressing rod 8b, and in particular, the spring 11a mounted on the pressing rod 8b which occupies a lower position than the supporting rod 8c has a ground pressure that supports its lower end. The purpose is to adjust the ground pressure of the ground leveling plate by changing the position of the adjustment bin 12, and the spring 11b, which also occupies a higher position than the support rod 8c, is inserted into and supported by the pressure rod 8b to support its lower end. It is located between the lowering position setting pin 13 and the retaining pin 14 inserted and supported to support the upper end, and contributes to shock absorption when traveling on the road.

Therefore, each of the pair of left and right rolling rods 8a as described above
A ground leveling plate is attached to the suspension member 8, which is made up of a pressing rod 8b and a supporting rod 8c, in the following manner.

That is, 15 is a cross joint-shaped grounding plate mounting bracket that can swing around the rolling rod 8a as a pivot;
As shown in FIG. 1, it is loosely fitted into the rear end of the rolling rod 8a and is positioned by being held by a stopper 16 and a fixed pin 17 at the front and rear.

Reference numeral 18 denotes a pivot shaft inserted from a direction perpendicular to the rolling rod 8a into a support protrusion 19 protruding from the lower part of the mounting bracket 15. A base plate 20 is attached so as to be able to rise and fall freely.

More specifically, the reinforcing piece 21 erected from the ground leveling plate 20
The front end portion of the support protrusion 19 is matched with the support protrusion 19, and when the pivot shaft 18 is inserted, it is raised and lowered so as to rotate around the pivot shaft 18.

Reference numeral 22 denotes a spring connected between the leveling plate 20, especially the reinforcing piece 21 thereof, and the mounting bracket 15, and is normally biased in a tensile manner to pull up the leveling plate 20 upward. The movement of the ground leveling plate 20 is regulated by the regulating protrusion 23 interposed between its reinforcing piece 21 and the mounting bracket 15, so that the ground leveling plate 20 can be leveled as shown in FIG. It is designed to be held at a predetermined angle of inclination that corresponds to the task.

Further, the up-and-down movement of the ground leveling plate 20 is carried out when the operating cable 24, which is locked at a proper position on the ground leveling plate 20, is inserted into a notch 26 (see FIG. 4) of the cable holding bracket 25 that projects from the hitch fitting 10. It is adapted to be selectively operated by being pulled out from the tractor body while being latched to the tractor body.

In the above configuration, FIG. 1 shows a grading work posture in which the ground leveling plate 20 is laid down at a predetermined angle, and in this case, the operating cable 24 is rather slack and is pulled upward by the spring 22. Of course, the movement of the ground leveling plate 20 is, so to speak, locked by the regulating protrusion 23.

Next, when moving from such a state to the earth raising work, by pulling the operating rope 24 and rotating the ground leveling plate 20 around the axis 18, the leveling plate 20 will be moved by the tension of the spring 22 as shown in FIG. It takes a standing posture against the force, and at that time, the standing angle can be adjusted and the standing posture can be locked by, for example, fitting a movable and fixable piece 27 onto the operating cable 24, and then attaching the piece 27 to the cable. 24 may be secured by hitting the above-mentioned notch 26 for locking.

In addition, the ground leveling plate 2 is changed from the standing position shown in Figure 2 to the prone position shown in Figure 1.
Needless to say, if you want to change 0, you just need to operate the cable 24 in the opposite way to the above.

In the illustrated example, the operation means using the cable 24 is explained, but the cable 24 is not limited to a rope or the like, and of course it may be a rod or the like.
Also, based on the illustrated example, the ground leveling plate 20 is supported at two points by a pair of hanging members 8 disposed at left-right symmetrical positions. The number of support points can be changed freely.

According to the present invention shown in the above-mentioned embodiment, the leveling plate 20 is attached to the rear of the tractor towing work machine 1 via the hanging member 8, and the leveling plate 20 can be locked in a freely undulating manner. The suspension member 8 is connected to a support rod 8c extending in the longitudinal direction of the tractor body, and a rolling rod 8a extending rearward in an inclined shape while being pivotally connected to the front end of the support rod 8c via a spherical grip 9. , a pressing rod 8b with a spring 11 pivotally connected to the middle of the rolling rod 8a and erected to penetrate the rear end of the supporting rod 8C; The leveling plate mounting bracket 15 that swings around the rod 8a is attached, and the rolling rod 8b is attached to the bracket 15.
The ground leveling plate 2
0 is rotatably mounted so that it can be freely raised and lowered, and the ground leveling plate 20 is configured to be able to roll up and down in a seesaw-like manner over its longitudinal direction. If the user maintains the standing position, suitable grading work can be performed, and if the user maintains the standing position, appropriate soil grading work can be performed, as well as the undulating operation can be performed smoothly and easily by the operation rope 24. In addition, since the undulating structure is not a conventional cam structure, even if an excessive load such as earth pressure is applied, the leveling plate 20 and its undulating structure will not be weakened, and the strength and durability can be improved.

In particular, in the present invention, the front end of the rolling rod 8a of the suspension member 8 of the ground leveling plate 20 is pivotally connected to the support rod 8c via the spherical grip 9, and the rear end of the rolling rod 8a is aligned. The ground plate mounting bracket 1 is fully connected to the ground plate 20.
5, it is mounted so that it can swing around the rolling rod 8a as an axis, so when doing ground leveling work at the edge of a ridge, etc., there is no need to apply excessive earth pressure to the leveling plate 20, especially at the edge of a ridge where there is a lot of embankment. In response to the load, the leveling plate 20 performs a seesaw-like up-and-down rolling motion along its longitudinal direction as shown by the chain line in FIG. This makes it possible to prevent problems such as the entire ground leveling plate 20 riding up on the embankment and not being able to obtain an appropriate leveling effect.

In other words, the leveling plate 20 is actively and automatically rolled, compared to the conventional structure in which the leveling plate 20 swings up and down only by the amount of backlash commensurate with the mutual engagement between the hole and the shaft in the undulating structure and support structure of the leveling plate. The above configuration of the present invention intentionally ensures the above effects for the first time, and provides a leveling plate with improved durability due to further reinforcement, which is advantageous in terms of the overall simple structure and the practical use of sumo wrestling. be.

[Brief explanation of the drawing]

The figures show an embodiment of the puddling device according to the present invention. Fig. 1 is a side view showing the puddling work state in which the ground leveling plate is in the prone position, and Fig. 2 is the same in the puddling work state in the upright position. Figure 3 is a rear view of the main part of Figure 1, Figure 4 is a partial side view showing the
The figure is a partial front view taken in the direction of arrow A in FIG. 1. 1... Rolling work machine, 8... Hanging member for leveling plate, 8a... Rolling rod, 8b...
...Press rod, 8C...Support rod, 9...
... Ball surface hand, 11 ... Spring, 15 ...
... Leveling plate mounting bracket, 18... Pivot, 20... Leveling plate, 22... Spring, 23... Regulating protrusion, 24... ...Operating cable, 25...Cable holding bracket, 26...
...notch, 27...adjustment piece.

Claims (1)

[Claims] 1. In the case where a ground leveling plate is attached to the rear of a tractor towing work machine via a suspension member, and the ground leveling plate can be locked in a freely undulating manner, the suspension member is supported along the longitudinal direction of the truck body. a rolling rod that is pivotally connected to the front end of the support rod via a spherical hand and extends rearward in an inclined shape; and a rolling rod that is pivotally connected to the middle of the rolling rod and extends to the rear end of the support rod. It consists of a pressing rod with a spring installed vertically so as to pass through the rolling rod, and a leveling plate mounting bracket that swings about the rolling rod as an axis is attached to the rear end of the rolling rod, and the mounting bracket is perpendicular to the rolling rod. The ground leveling plate is rotatably mounted on a pivot supported from the direction in which the leveling plate is rotated, so that the leveling plate can be rolled up and down in a seesaw-like manner over its longitudinal direction. This is a puddling device that can be used for earth-filling work.