JPH09308305A - Levee plastering machine - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a levee plastering machine, capable of reducing noise and fatigue of an operator, improving the durability of a spring and speeding up the plastering operations by elastically supporting a levee forming part through an elastic supporting part composed of the spring having a nonlinear spring constant on a levee plastering machine body. SOLUTION: This levee plastering machine is obtained by installing a levee forming part D capable of connecting a vibration generating means to a levee forming plate 60 and carrying out the forming and compacting of a levee in a levee plastering machine body and elastically supporting the levee forming part D through an elastic supporting part E composed of a spring having a nonlinear spring constant on the levee plastering machine body. Furthermore, a vibrator 40 as the vibration generating means is obtained by pivoting one rotating shaft through roller bearings in the interior of a housing unit 42 and a hydraulic motor M arranged on the outside of the housing unit 42 is interlocked and connected through a coupling to the rotating shaft.

Description

Detailed Description of the Invention

[0001]

TECHNICAL FIELD The present invention relates to a ridge coater.

[0002]

2. Description of the Related Art Conventionally, a ridge forming plate has been formed by connecting a rotary unit for cutting the side surface of the original ridge and scraping the cutting soil to the upper surface of the ridge, and a vibrating means such as a vibrator on the ridge forming plate. There is a ridge coater equipped with a ridge forming part that forms and forms new ridges by shaping and tamping the cutting soil by the vibration of the ridge, and an elastic support part is provided between the ridge coater main body and the ridge forming part. The vibration from the vibrating means is prevented from being transmitted to the main body of the ridge coater.

[0003]

However, when the vibration frequency of the vibrating means is increased, there is a problem that surging may occur in the elastic support portion and the elastic support portion may be damaged.

[0004]

Therefore, in the present invention, in the present invention, the ridge coater main body is provided with a ridge forming section for connecting the oscillating means to the ridge forming plate and for forming and compacting the ridge. At
It is intended to provide a ridge coating machine characterized in that the ridge molding section is elastically supported by a ridge coating machine main body through an elastic supporting section composed of a spring having a non-linear spring constant.

[0005]

An embodiment of the present invention will be described with reference to the drawings.
1 and 2 show a ridge coater A according to the present invention.

In the figure, reference numeral 1 denotes an agricultural tractor as a self-propelled vehicle having front and rear wheels 2 and 3, and a front wheel 2 is turned by operating a steering wheel 5 in front of a driver's seat 4 so that the vehicle body travels. I have to.

A left end portion of the main body case 10 of the ridge coater main body B is vertically movably connected to the rear of the tractor 1 via a three-point link mechanism 8 composed of lower links 6, 6 and a top link 7. , The ridge coater main body B is pulled by the tractor 1, and the rotary nail 12 for plowing of the earth gathering rotary 11
And, the lower blade 13 is provided in the rotary cover 14 mounted on the rear surface of the right end of the main body case 10, the rotary claw 12 for plowing and the lower blade 13 are rotated in a counterclockwise direction as viewed from the rear, and the inside surface of the original ridge and its side. The paddy field on the other side was ground with a rotary claw 12 for plowing to crush the soil, and a mud cover 15 was placed above the upper surface of the ridge.
Is arranged so that the crushed soil scattered from the lower blade 13 is dropped onto the upper surface of the ridge by the guide of the mud shutter in the mud cover 15.

Further, the ridge forming part D is arranged behind the mud cover 15 so as to form a new ridge from the crushed soil dropped on the upper surface of the ridge. The ridge forming part D is as follows. It is supported by the body case 10. That is, the ridge molding portion D is hung on the ridge molding portion mounting seat 20 via the elastic support portion E, and the mounting seat 20 is fixed to the right end of one ridge molding portion supporting arm 22 made of a square pipe. One end side of the parallel links 23, 24 is connected to the left end of the ridge forming part support arm 22, the other end side of each link 23, 24 is connected to both ends of the horizontal frame 25a of the T-shaped lifting frame 25, and the parallel links 23, 24 are connected. The vertical frame 25b of the elevating frame 25 is vertically slidably inserted into the guide frame fixed to the rear surface of the main body case 10 by providing the bracing link 26 that regulates the swing of 24, and the right rear side of the main body case 10 is inserted. The vertical frame 25b is tilted to the right so that it is substantially horizontal in the horizontal direction.

Further, an electric lifting cylinder 27 is attached to a cylinder mounting seat protruding from the rear side of the main body case 10, and a piston 28 of the cylinder 27 is connected to a connecting shaft 29 on the lower end side of the vertical frame 25b. , The elevating cylinder 27 is moved up and down to move the elevating frame 25 up and down, and the ridge forming part support arm 22
The ridge forming part D is moved up and down via the.

The base end of the mud cover frame 30 is fixed to the elevating frame 25, and the mud cover frame 30 is attached at the tip of the frame 30.
The mud scattering prevention cover 31 fixed to the right side surface of the main body case 10 is superposed on the upper surface and the front and rear surfaces of the mud cover 15, and the mud scattering from the rotary 11 is prevented by these covers 15 and 31. are doing.

Further, on the lower side of the center of the main body case 10 on the left and right sides,
A round pipe-shaped sled 32, which is long in the front-rear direction and slides on the rice field, is attached so that it can be adjusted up and down to keep the ground height of the main body case 10 constant, and at the same time, the earth moving disk 34 is attached to the main body case 10 via a bearing arm 33. By attaching and cultivating the paddy field near the inside of the ridge and digging to the ridge side, it is possible to efficiently perform the digging at the subsequent digging rotary 11.

Further, a hydraulic oil tank 35 is arranged on the left side of the main body case 10, and a hydraulic pump P is arranged on the rear side surface of the main body case 10 close to the tank 35. The hydraulic hoses 36a, 36b, 36c are respectively connected between the hydraulic pump P and the hydraulic motor M of the ridge forming part D described later.
Is connected for communication.

In the figure, reference numeral 37 is a tilling depth sensor which detects the tilling depth of the earth-pulling rotary 11 by sliding the lower surfaces of the three sensor plates 38 against the rice field and changing the ground pressure.

As shown in FIGS. 3 and 4, the ridge forming portion D has a ridge forming plate 60 for forming a new ridge connected below a vibrator 40 as a vibrating means.

As shown in FIGS. 5 and 6, the vibrator 40 includes a roller bearing inside a substantially rectangular tubular casing 42.
One rotary shaft 44 is pivotally supported via 43, and a hydraulic motor M disposed outside the casing 42 is interlockingly connected to the rotary shaft 44 via a coupling 45, and at the same time, the rotary shaft 44 is connected to the rotary shaft 44. Unbalanced weight W
Is attached to generate vibration by the rotation of the unbalanced weight W. In FIG. 5, 46 is a bearing mounting seat,
47 is a bearing cap, and 48 is a hydraulic motor mounting seat which also serves as a bearing mounting seat on the hydraulic motor M side. In FIG. 6, 49 is a weight mounting bolt.

As shown in FIG. 7, the ridge forming plate 60 has a side surface forming portion 61 for forming the inner side surface of the ridge and an upper surface forming portion 62 for forming the upper surface of the ridge, which are bent into a substantially arc shape having a radius r. The shoulder surface molding portion 63 for molding the shoulder portion of the ridge is smoothly connected and integrally formed in a substantially V-shape when viewed from the rear. The cross-sectional shapes of the respective portions 61, 62, 63 are shown in FIG. As described above, the crushed soil introducing portion 65 is continuously provided at the front end of the pressing portion 64 having the front-rear width a at an oblique angle of attack θ, and the rear end of the pressing portion 64 extends obliquely rearward and upward at a steep angle. Part 66 is installed in series. In FIGS. 7 and 8, 51 is a ridge forming plate mounting bolt.

Further, as shown in FIGS. 9 and 10, a flexible molded body having a substantially L-shaped cross section is attached to the lower surface of the rear end of the separating portion 66 between the side surface molding portion 61 and the upper surface molding portion 62 via bolts. The flexible molded body 80 is attached through the flexible molded body mounting bolts 83 and the double nuts 84 protruding from the upper surface of the flexible molded body mounting plate 82. A flexible plate-shaped material such as rubber is bent in a folded shape to form a rear end portion 81 in a loop shape, and the front end portion of the flexible molded body 80 is attached through the bolts of the respective separation portions 66 in a cross section. The flexible molded body mounting plate 82, which is substantially L-shaped, is fixed via a flexible molded body mounting bolt 83 and a double nut 84 that project from the upper surface.
In this way, by forming the rear end portion 81 of the flexible molded body 80 into a loop shape, it is possible to prevent the flexible molded body 80 from being marked on the surface of the new ridge after molding, and to form a smooth new ridge. You can In addition, the ridge molding portion D makes an elliptical motion by the vibrator 40 and the elastic support portion E, and in the conventional strip-shaped flexible molding body, the strip-shaped flexible ridge surface is pressed against the new ridge surface after molding by the rear end of the flexible molding body. Indentation occurs.

Further, between the upper surface of the front end portion of the flexible molded body 80 and the double nut 84, a holding plate 86 having an elongated hole 85 in the front-rear direction for inserting the flexible molded body mounting bolt 83 is interposed,
Also, as shown in FIG. 10, the height h of the rear end portion 81 of the flexible molded body 80 is changed by moving the pressing plate back and forth to change the height of the flexible molded body 80.
The pressing force of is adjustable.

11 and 12 show the side surface molding portion 61, the upper surface molding portion 62 and the shoulder surface molding portion 63 of the ridge molding portion D, respectively.
FIG. 11 shows another embodiment of the flexible molded body which is mounted over the entire detaching portion 66 of the flexible molded body 90 so that the side surface, the upper surface and the shoulder portion of the ridge can be molded. Is formed in a loop shape similar to the above, and in FIG. 12, a pipe-shaped rear end material 92 is continuously provided at the rear end of the flexible molded body 91 and the rear end portion is rounded. ing.

The ridge molding portion D is attached to the tip of the ridge molding portion support arm 22 via the elastic support portion E, and the elastic support portion E, as shown in FIGS. 4 and 5, is a ridge molding portion. While fixing the spring mounting seats 70 to the four corners of the substantially rectangular plate-shaped ridge forming part mounting seat 20 fixed to the tip of the support arm 22, respectively, at the four corners of the substantially rectangular vibrator upper surface plate 41,
The spring mounting seats 70 are fixedly provided so as to face the spring mounting seats 70 on the side of the ridge forming part support arm 22, respectively, and the unequal pitches as springs each having a non-linear spring constant are provided between the facing spring mounting seats 70. Coil springs 72 are provided, and spring mounting seats 70 are attached to the ends of the lateral spring support bodies 73 protruding from the lower surface of the ridge molding portion mounting seat 20 and the upper surface of the vibrator upper surface plate 41, respectively. An unequal pitch coil spring 72 is provided between the seats 70 to elastically support the ridge molding portion D.

In particular, the unequal pitch coil spring 72 has a winding pitch P1 at the central portion wider than the winding pitch P2 at both ends, and the unequal pitch coil spring 72 has an effective length as it is compressed. It has a non-linear spring constant that decreases and gradually increases.

A spiral groove is formed on the outer peripheral surface of each spring mounting seat 70, and an end portion of the unequal pitch coil spring 72 is screwed into the spiral groove to compress each unequal pitch coil spring 72. It is designed to act in both directions of tension.

As described above, between the ridge forming portion mounting seat 20 and the vibrator upper surface plate 41, the pitch of the central portion is made wider than that of the both end portions, and the spring constant gradually increases as it is compressed. The elastic support portion E having a non-linear spring constant is formed by interposing the.

With such a structure, it is possible to prevent the vibration of the vibrator 40 from being transmitted to the main body case 10, and the resonance point of the vibration system formed by the ridge molding portion D and the elastic support portion E becomes high and the surging occurs. Is prevented, the durability of the spring is improved, the noise is reduced, the operator's fatigue can be reduced, and the frequency of the ridge molding portion D can be increased. Therefore, the vehicle speed can be increased. Can do ridge coating work.

Further, while a substantially U-shaped amplitude restricting body 53 is projected from the side surface of the casing 42 of the vibrator 40, a roller supporting body 54 is vertically provided from one side of the lower surface of the ridge molding portion mounting seat 20. The amplitude regulation roller 55 attached to the tip is positioned inside the opening of the amplitude regulation body 53 to regulate the excessive amplitude of the ridge molding portion D.

[0026]

EFFECTS OF THE INVENTION According to the present invention, in the ridge coating machine, the ridge coating machine main body is provided with a ridge molding portion for connecting the vibration means to the ridge molding plate and for forming and compacting the ridges. By elastically supporting the molding part by the ridge coater main body through the elastic support part composed of a spring having a non-linear spring constant, it is possible to prevent the vibration from the vibrating means from being transmitted to the ridge coater main body. Of course, the resonance point of the vibration system formed by the ridge molding portion and the elastic support portion is increased to improve the durability of the spring, and the noise is reduced to reduce operator fatigue,
Furthermore, since the frequency of the ridge molding portion can be increased, the vehicle speed can be increased and the efficiency of the ridge coating work can be increased.

[Brief description of drawings]

FIG. 1 is a plan view of a ridge coating machine according to the present invention.

FIG. 2 is a rear view of the same.

FIG. 3 is a rear view of the ridge molding portion and the elastic support portion.

FIG. 4 is a side view of the ridge molding portion and the elastic support portion.

FIG. 5 is a partial cross-sectional rear view of the vibrator.

FIG. 6 is a sectional side view of the vibrator.

FIG. 7 is a rear view of the ridge molding plate.

FIG. 8 is a sectional side view of the ridge molding plate.

FIG. 9 is a side view of the flexible molded body.

FIG. 10 is a side view of the flexible molded body.

FIG. 11 is a side view of a flexible molded body according to another embodiment.

FIG. 12 is a side view of a flexible molded body according to another embodiment.

[Explanation of symbols]

 A ridge coater B ridge coater body D ridge forming part E elastic support part 40 vibrator (vibrating means) 60 ridge forming plate 72 unequal pitch coil spring

Claims (1)

[Claims] 1. A ridge molding section for connecting a ridge coating machine body (B) to a ridge molding plate (60) with a vibrating means for molding and tamping the ridge.
In the ridge coater (A) equipped with (D), the ridge molding part (D) is elastically supported by the ridge coater main body (B) via an elastic support part (E) composed of a spring having a nonlinear spring constant. A ridge coater characterized by being supported.