JPH0547532Y2 - - Google Patents

Description

[Detailed description of the invention] Industrial application field The present invention relates to a ridge leveling machine, and in particular, to a ridge leveling machine that digs up muddy soil, mounds it up in old ridges, and hardens the raised soil by pounding it with a ridge pounding plate. The present invention relates to a position adjustment mechanism.

Conventional technology: Ridges are built in rice fields to store water by weiring them, to create borders with other people's fields, or to serve as footpaths for agricultural work. Such ridges are considered to be good if they do not leak water, do not collapse even when people walk on them, and are stable without changing in height or width.

In order to create such ridges, conventionally, a tiller is used to make soil at the edge of the ridge, then the weathered soil and grass on the surface of the ridge is removed with a hoe, and then the soil is poured into the remaining area. Another method is to place it on top and beat it with a hoe. This method is the best method because the mixed soil has an oriented structure, so it hardens and hardens when it dries, but if you pile it too thick at once, it will cause large cracks when it dries, causing water leakage, so you can only pile it up by about 3 cm. , it was time-consuming to make adjustments while proceeding with the work, which posed a problem in saving labor in agricultural work.

Therefore, a ridge leveling machine was developed that mechanized the above-mentioned method of mounding the mixed soil with a hoe, but since this machine kneads soil and mud, it can only be used when there is a lot of water in the fields. For example, since it only lasts for a short period of time in early spring, it has the disadvantage of being limited in its usage period.In an attempt to improve this, a ridge leveling machine that replenishes water with a pump was developed, but it was labor-intensive and required less machinery. The operation was also cumbersome.

Next, a ridge adjustment machine was developed that improved these shortcomings and could be used throughout spring and autumn. This method involves digging up soil with a rotor and mounding it up into ridges, and pounding the raised soil with a roughly curved ridge pounding board to harden the top and one side of the ridge. The ridge beating plate of this ridge leveling machine is connected to a rod provided on the power output shaft of the tractor via a crank mechanism, and is also rotatably connected to two parallel links that are pivotally supported on the machine frame. It is operated by a so-called lever (Q) crank mechanism, and is operated according to a constant movement in which the forward and backward movement of the rod is restrained by the fluctuating movement of a parallelogram formed by two links.

This ridge leveling machine has a crank mechanism and a movable link connected to the rod, so there are many mechanically connected parts.Furthermore, the movement of the ridge pounding plate is accompanied by repeated shocks, so the connection part is particularly noisy. There were problems in that it was easy to cause problems and failures.

Therefore, as an improvement on this ridge leveling machine, the present inventor devised a ridge leveling machine in which a ridge beating plate is advanced and retreated using a hydraulic device in a previous application. In this ridge adjustment machine, the ridge beating plate is operated by a piston device that is operated by hydraulic pressure from a hydraulic pump, so it is easy to adjust the hydraulic pressure, and there are few mechanical connections such as link connections, so the operation is easy. The noise level is improved compared to the ridge straightening machine using the above-mentioned crank mechanism.

However, since the height of the ridge beating plate was adjusted by adjusting the vertical position of the piston device relative to the machine frame, the impact caused by the repeated movement of the ridge beating plate caused rattling at the stop position of the piston device, causing noise. occurred, and its improvement was desired.

Problems that the invention aims to solve As mentioned above, the conventional lever (Q) crank type ridge leveling machine makes a lot of noise and is prone to breakdowns, and the improved hydraulic type ridge leveling machine also has a problem with the movement of the ridge pounding board. This resulted in noise, and improvements were desired.

Means for Solving the Problems In order to solve the above problems, the present invention provides an earth raising rotor that digs up mud in the machine frame and heaps it up into old ridges, and a ridge that pats and compacts the mud raised by the earth raising rotor. In a ridge straightening machine having a beating plate, a hydraulic pump consisting of a piston and a cylinder and a piston device consisting of a piston and cylinder are respectively provided in the machine frame, the hydraulic pump and the piston device are connected by a flexible tube, and the piston Support the above-mentioned ridge beating plate on the piston rod of the device,
A vertical fixed shaft is provided on the mounting plate provided on the main machine frame of the machine frame, and a slider is provided on the fixed shaft so as to be freely rotatable, and the slider is rotatably supported by the mounting plate and screwed into the screw hole formed in the slider. A ridge adjustment characterized in that the slider is provided with a screw rod that fits together, supports the piston device on the slider, and is provided with a tightening tool or a pressing tool for fixing the slider to the fixed shaft at its stop position. It provides an opportunity for

Function: Since the slider is fixed to the shaft at its stop position with a clamp or a stopper, there is no wobbling in the fixed part of the piston device that operates the ridge beating plate, so it is not susceptible to repeated vibrations caused by the tapping operation of the ridge beating plate. Also, the sound generated from this support part can be reduced.

Embodiment Next, an embodiment of the present invention will be explained based on FIGS. 1 to 3.

In FIG. 1, T is a tractor, and A is a ridge leveling machine.
The main engine frame 1 is attached to a mounting frame a provided on the rear upper part of the tractor T via links b and c, and is rotatable to rotatable links d and e provided on both sides of the rear lower part of the tractor. connected to
Furthermore, the front upper part of the main engine frame 1 and the rear upper center of the tractor are connected by an adjustment link f whose length can be freely adjusted, and the ridge straightening machine A, which is held at a predetermined angle by the adjustment link f, is not shown. It can be rotated downward via the mounting frame a which is rotated by a hydraulic device, and can be returned to its original position by rotating the mounting frame a upward by this hydraulic device.

In the above-mentioned ridge adjustment machine A, a speed reducer is connected to a power transmission shaft connected to a power take-off shaft g of a tractor T via a universal joint (not shown), a transmission shaft is connected to this speed reducer, and this transmission shaft A rotor R is attached to the rotor R, whereby the rotational force of the power transmission shaft is decelerated and directed by the reduction gear, and the rotation direction is opposite to the rotation direction corresponding to the traveling direction of the tractor. As a result, the axis of the rotor R is oriented substantially perpendicular to the direction of travel of the tractor, and the direction of rotation thereof is opposite to the direction of rotation with respect to the direction of travel of the tractor.

Note that 1' is a cover plate that covers the upper part and both sides of the rotor, and on this cover plate 1', a vertically moving plate 1'a having wheels that run on the upper surface of the ridge is movably attached to fitting bars on both sides. It is fitted.

Further, although not shown in the ridge adjustment machine A, a plunger pump such as a water gun is connected to the speed reducer via a cam or a crank, and a flexible tube 2 made of rubber or the like is connected to the plunger pump. The piston device 3 is connected to this.

This piston device 3, as shown in FIG.
The inlet body 3a of the cylinder is rotatably supported on the support frame 4 by shafts 3c, 3'c (not shown) passing through the collar 3b, and one end is attached to both sides of the support frame 4. springs 6a, 6b (not shown), and arm pieces 3d, 3'd attached to the other ends of these springs via length adjusting rods 6c, 6d (not shown) and protruding from the collar 3b. The ridge beating plate return mechanism 6, which is composed of a connecting piece 6e connected via connecting punches 3e and 3'e, limits its rotational range so that it can return to its original position.

The piston device 3 is provided with a sleeve 3f which is movable back and forth together with a piston rod inserted into the cylinder, and a spring is provided between the sleeve and the cylinder, although the details are omitted from the drawings.
As a result, the spring is compressed by the sleeve 3f which is pushed down together with the piston rod by the action of the oil pressure, but when the oil pressure is released, its elastic force acts and the sleeve 3f is pushed up.

A ridge beating plate 7 is attached to the piston rod. That is, this ridge beating plate 7 is positioned so as to be able to advance and retreat toward the core of the ridge, and has a substantially U-shaped striking surface 7a. A fixed rectangular cylindrical mounting tube 3g is inserted and pivoted so that the above-mentioned hitting surface can rotate freely toward the ridge,
Buffer bodies 7c and 7'c made of rubber or the like and having a semicircular cross section are sandwiched on both sides of the mounting tube in the direction toward the ridge.

In this way, the ridge beating plate 7 is rotated together with the piston device 3, and is rotatably provided toward the ridge, but in order to adjust the ridge beating plate 7 to the height of the ridge on the ridge straightening machine. , a shaft fixing plate 9a at the lower end of the mounting plate 8 supported by the main engine frame 1, a shaft fixing body 9b above,
9c, a pair of left and right vertical fixed shafts 10, 11 are fixed to these, and a slider 11, which is integrally welded to the support frame 4 at the center thereof, can be freely slid onto these fixed shafts through the insertion hole. Further, a screw hole is formed in the middle of the slider 11, a screw rod 12 is screwed into the slider 11, and the lower end of the screw rod is attached to the shaft fixing plate 8a.
A shaft fixing body mounting plate 8 which is rotatably inserted through the shaft fixing body mounting plate 8, and the shaft fixing bodies 8b and 8c are attached between the shaft fixing bodies 8b and 8c.
It is inserted into the through hole d, and its upper part is inserted into a screw support plate 8e provided at the upper end of the mounting plate 8, and is rotatably supported by this support plate. A handle 12a is provided at the upper end of this screw rod, and by operating this handle, the slider 11 is moved up and down, the support frame 4 is moved up and down, the piston device 3 is moved up and down, and the ridge beating plate 7 is moved up and down.
move up and down.

In the above, the slider 11 has slots 1 on both sides that communicate with the insertion holes 9a and 10a of the fixed shafts 9 and 10, respectively, and open toward the support frame 4 side.
3 and 13' are provided, and further screw holes 14 and 14' are provided on both sides of the slider 11 so as to approach each other through respective slots.
are provided, and screw rods 15, 15' as fasteners are screwed into these screw holes, and the slots are opened and closed by handles 15a, 15'a provided on the respective screw rods.
1 is tightened and fixed to the vertical shafts 9 and 10.

Note that 8' is a horizontal position adjustment plate that fixes the mounting plate 8 and moves it laterally, and a bolt protruding from the main engine frame 1 is inserted into the elongated hole of the plate. The hole can be moved and tightened with a nut at the desired position.

16 is a tail wheel.

Next, the operation of this embodiment will be explained.

First, as shown in FIG. 1, the ridge leveling machine A is connected to a tractor T, enters a rice field, drives the power output shaft g, and operates the rotor R and the ridge beating plate 7.

Adjust the height of the entire ridge leveling machine so that the rotating blades of rotor R can penetrate one side of the ridge and the surface soil of the field.

Next, the height of the ridge beating plate 7 is adjusted by operating the handle 12a to move the slider 11 upward or downward along the fixed shafts 9, 10, and stops when the height of the ridge is adjusted to the screw rods 15, 15'. are tightened to the fixed shafts 9 and 10. After this, the direction of the tail wheel 16 is adjusted.

In this state, when the tractor T is moved parallel to the ridge, the rotating blades of the rotor R scrape one side of the ridge, dig up the surface soil of the rice field, and heap the scraped and dug up soil into the ridge. The soil piled up in this way is repeatedly vibrated by the ridge beating plate 7.
It is pounded and hardened.

At this time, the ridge beating plate 7 is repeatedly advanced and retreated by hydraulic pressure to perform the ridge beating operation, and the impact is also transmitted to the fitting portion of the slider 11 and the vertical shafts 9, 10. Since it is tightened and fixed, there is no wobbling and no noise.

In the above example, a slot is provided in the slider and the slider is tightened and fixed to the fixed shaft by opening and closing the slot, but as shown in FIG.
A plurality of tapered holes 9a, 9 spaced apart from each other
b,..., 10a, 10b... are provided, and the slider 1
Each screw hole 17, 17' provided on both sides of 1
Screw rods 19, 19' serving as push-stops may be screwed together, and the tips of the screw rods may be pressed into contact with the tapered holes to tighten and fix the slider 11 to the vertical shafts 9, 10.

Effects of the invention According to the invention, a piston device for operating the ridge beating plate is provided so as to be movable up and down by a slider, and the slider is fixed at the stop position by a tightening device or a pressing device provided on the slider. Therefore, even when the ridge beating board vibrates back and forth and repeated shocks are transmitted to this fixed part, the rattling can be eliminated and the noise can be reduced. This allows for quiet agricultural work and also prevents repeated rattling. This can reduce the number of failures due to

[Brief explanation of the drawing]

Fig. 1 is a perspective view of one embodiment of the ridge adjustment machine of the present invention in use, Fig. 2 is an enlarged perspective view of a part thereof, and Fig. 3
The figure further shows a partial cross-sectional view of -, and FIG. 4 is a partially enlarged front view of another embodiment. In the figure, A is the ridge straightening machine, 1 is the main engine frame, R is the rotor,
3 is a piston device, 7 is a ridge beating plate, 9 and 10 are fixed shafts, 11 is a slider, 12 is a screw rod, 13, 1
3' is slotted, 14, 14' is screw hole, 15, 1
5', 19, 19' are screw rods, 9a, 9b, .
10b... is a tapered hole.

Claims (1)

[Scope of utility model registration request] In a ridge adjustment machine that has an earth raising rotor that digs up mud into the machine frame and heaps it up into old ridges, and a ridge pounding plate that pounds and hardens the mud raised by the earth raising rotor, a hydraulic pump consisting of a piston and a cylinder, and a piston and cylinder are used. A piston device is provided in each of the machine frames, the hydraulic pump and the piston device are connected by a flexible tube, the ridge beating plate is supported on the piston rod of the piston device, and the piston device is provided in the main machine frame of the machine frame. A vertical fixed shaft is provided on the mounting plate, a slider is provided on the fixed shaft so as to be freely slidable, a threaded rod is provided which is rotatably supported on the mounting plate and is screwed into a threaded hole formed in the slider, supporting the piston device;
A ridge straightening machine characterized in that the slider is provided with a tightening tool or a pressing tool for fixing the slider to the fixed shaft at the stop position.