JP7204256B1 - Soil improvement device - Google Patents

Abstract

A soil improvement device capable of shortening the time for drilling and improving workability is provided. A soil improvement device (10) is an attachment suspended from an arm (B3) connected to the tip of a boom (B2) extending from the front of a main body (B1) of a construction machine (for example, a backhoe) used as a base machine (B). is. The soil improvement device 10 includes a connecting portion 11 connected to an arm B3 of a base machine B, a driving portion 12 provided in the connecting portion 11 for generating continuous vibration, and continuous vibration from the driving portion 12 to improve the farmland. and a stake portion 13 for drilling. According to the soil improvement device 10, while being suspended from the arm B3 of the base machine B, the pile portion 13 vibrates due to the continuous vibration generated by the driving portion 12 and drills the farmland. By changing the drilling position, the piling portion 13 can be penetrated and penetrated while gradually crushing the hard plowing layer or the hard layer. [Selection drawing] Fig. 1

Description

TECHNICAL FIELD The present invention relates to a soil improvement device for drilling a plow bed layer and a hard bed layer.

The soil is hardened by treading on the soil by agricultural tools, etc., and a plow bed layer and a hard bed layer that impermeable to moisture and air may be formed in the farmland. The formation of a plowed bed layer or a hard bed layer hinders the growth of roots, making cultivation impossible or reducing yields. A conventional soil improvement apparatus is known that perforates and crushes such a plow bed layer and a hard bed layer to allow moisture and air to permeate the soil, thereby improving the soil to be suitable for the inhabitation of microorganisms.

For example, in the plowing board expansion and softening device described in Patent Document 1, the impact piston hits the head of the air blowing body to drive the air blowing body into the ground, crushing the plowing board, expanding it, and driving it into the ground. Pressurized air is supplied to the air blowing body that has been crushed, and is vigorously jetted into the ground from the jet holes at the bottom, allowing the air to permeate the crushed plowing board and sufficiently expand and soften it.

In the plowing board expansion and softening device described in Patent Document 2, an impact piston having a structure similar to that of a known air hammer impacts the head of an air blower, and pressurized air is supplied to the impact mechanism, which in turn presses the air blower. The air is ejected from the inner hole to the outside from the blowout hole.

Japanese Utility Model Laid-Open No. 58-185005 JP-A-58-126701

However, in the plow bed expansion and softening devices described in Patent Documents 1 and 2, the air blowing body is driven by the striking piston with compressed air, but single-shot driving is difficult when the plow bed layer or the hard bed layer is hard and cannot be drilled. , workability is poor because it takes a long time to drill a large number of holes throughout the farmland.

SUMMARY OF THE INVENTION Accordingly, it is an object of the present invention to provide a soil improvement apparatus capable of shortening the drilling time and improving workability.

The soil improvement apparatus of the present invention comprises: a connecting portion connected to an arm operated by a main body of a base machine; a driving portion provided in the connecting portion for generating continuous vibration; and a pile portion that bores the farmland by violent vibration.

According to the soil improvement apparatus of the present invention, while being suspended from the arms extending from the main body of the base machine, the piles vibrate due to the continuous vibration generated by the driving section, and the farmland is drilled. The drilling position can be changed by the machine, and the hard plowing layer or hard layer can be gradually crushed and penetrated into the pile portion.

The drive unit may generate vibrations a plurality of times per second. The driving part generates high-speed vibrations a plurality of times per second, so that the pile part can pierce the plowing layer or the hard layer at high speed one after another even if the single-shot drilling is performed several times and cannot be penetrated. As a result, the hard plowing layer or the hard layer can be easily crushed, so that the soil can be penetrated gradually and deeply while repeating the vibration.

The drive unit may generate vibrations that swing in the vertical direction, the front-rear direction, or the left-right direction. The piles vibrate downward and expand in the front-rear or left-right direction when stuck in the farmland. can invade.

The pile section may include a plurality of metal piles protruding downward from the driving section. By drilling with a plurality of metal piles, a plurality of holes can be drilled at a time, so workability can be further improved.

The drive section may include a hydraulic motor that serves as a drive source, and an eccentric weight that converts rotation of the hydraulic motor to vibrate the pile section. By using a hydraulic motor as a drive source, it is possible to generate high-speed, high-torque rotation, and by hitting the piling part against the plowing layer or the hard layer, it can be pushed into the hard plowing layer or the hard layer. , can be crushed.

The drive unit holds the hydraulic motor and the eccentric weight, and is connected to the transmission unit via an elastic member and to the coupling unit, and is connected to the transmission unit that transmits vibration generated by the eccentric weight to the pile unit. and a frame portion.
The frame connected to the connecting part is connected via an elastic member to the transmission part that transmits the vibration to the pile part. department.

According to the soil improvement apparatus of the present invention, the perforation position can be changed by the base machine, and the hard plowing layer or the hard layer can be gradually pulverized and penetrated, so that the perforation time can be shortened and workability can be improved. can be improved.

BRIEF DESCRIPTION OF THE DRAWINGS It is a figure which shows the soil improvement apparatus which concerns on embodiment of this invention, and the base machine which suspends a soil improvement apparatus. It is a figure for demonstrating the soil improvement apparatus shown in FIG. 1, (A) is a side view of a soil improvement apparatus, (B) is a front view of (A). It is a figure for demonstrating the drive part of the soil improvement apparatus shown in FIG. 1, (A) is a side view of the state which removed the connection part and the outer frame part, (B) is a front view of (A). 4A and 4B are diagrams for explaining the operation of the vibrating body of the driving unit shown in FIG. 3; FIG. 1. It is a figure for demonstrating operation|movement of the soil improvement apparatus shown in FIG. 1, (A) is a figure when a drive part moves downward, (B) is a figure when a drive part moves upward.

A soil improvement device according to an embodiment of the present invention will be described with reference to the drawings.
A soil improvement apparatus 10 shown in FIG. 1 perforates a plow bed layer and a hard bed layer formed in farmland to allow moisture and air to pass through, thereby promoting the growth of plants.
The soil improvement device 10 is an attachment suspended from an arm B3 connected to the tip of a boom B2 extending from the front of a main body B1 of a construction machine (for example, a backhoe) used as the base machine B.

The soil improvement device 10 includes a connecting portion 11 , a drive portion 12 and a pile portion 13 .

As shown in FIGS. 2A and 2B, the connecting portion 11 includes a pair of parallel connecting plates 111 extending upward, and a bottom plate 112 connecting the lower ends of the pair of connecting plates 111. . The connecting plate 111 is formed of an inverted trapezoidal metal plate, and has a through hole 111a formed at the upper end thereof. The through hole 111a is an attachment connecting hole through which a connecting pin is inserted to connect with the arm B3 (see FIG. 1). The bottom plate 112 is made of a rectangular metal plate.

The drive unit 12 moves up and down because the center of gravity is eccentric from the axis of the hydraulic motor 121 serving as a drive source that is fed with oil from the base machine B (see FIG. 1) and the rotating shaft 121a of the hydraulic motor 121. and a vibrating body 122 that converts into a large rotational motion including
As shown in FIGS. 3A and 3B, the hydraulic motor 121 includes a hose 121m for feeding oil from the base machine B (see FIG. 1) to the hydraulic motor 121, and a hose 121m for feeding oil from the hydraulic motor 121 to the base machine B. A hose 121n is connected to return to.
The hydraulic motor 121 generates multiple vibrations per second. In this embodiment, by adopting the hydraulic motor 121, it is possible to generate vibrations 30 to 40 times per second.

The vibrating body 122 is an eccentric weight formed in a disk shape and connected to the rotating shaft 121a of the hydraulic motor 121 at a position shifted from the center. The vibrating body 122 may be formed in a fan shape with a rotation shaft connected to a key position. The vibration generator 122 is rotatably sandwiched between a pair of transmission plates 123 .

The transmission plate 123 functions as a transmission section that transmits vibration to the pile section 13 .
A pair of transmission plates 123 are connected to a pair of outer frame plates 126 via elastic members 125 (see FIG. 2). The elastic member 125 is made of a rubber block. The outer frame plate 126 is formed in an inverted U shape that opens downward and functions as a frame. The outer frame plate 126 is connected to the lower end of the connecting portion 11 . A space between the pair of outer frame plates 126 is a space in which the hydraulic motor 121, the vibrating body 122, the transmission plate 123, and the elastic member 125 are arranged.
In the pair of transmission plates 123, the space between the center portions 123a is a space in which the vibrating body 122 rotates, and the outer surfaces of both end portions 123b are regions to which the elastic members 125 are connected.
A diaphragm 124 is connected to the lower end of the transmission plate 123 . The diaphragm 124 is a rectangular metal plate.

The pile portion 13 includes a connection plate 131 provided on the diaphragm 124 and a plurality of metal piles 132 provided to protrude downward from the connection plate 131 . The connection plate 131 is a strip-shaped metal plate that connects the plurality of metal piles 132 to the vibration plate 124 .
The metal pile 132 is a rod-shaped body with a sharp tip. In this embodiment, three metal piles 132 are arranged in a line.

The operation and usage of the soil improvement apparatus according to the embodiment of the present invention configured as described above will be described with reference to the drawings.
First, the operator operates the base machine B shown in FIG. 1 to operate the boom B2 and the arm B3 to lift the soil improvement device 10 and move it above the drilling position. Next, the soil improvement device 10 is lowered to pierce the farmland with the pile portion 13 .
Since the soil above the plow bed layer or the hard bed layer is soft ground, the pile portion 13 reaches the plow bed layer or the hard bed layer by its own weight without being pushed by the base machine B.

Next, the operator operates the base machine B to feed oil to the hydraulic motor 121 of the drive unit 12 shown in FIGS. 3(A) and 3(B). By doing so, the rotating shaft 121a of the hydraulic motor 121 rotates. The rotation of the rotating shaft 121a causes the vibrating body 122 to rotate.
As shown in FIG. 4, since the vibrating body 122 is connected to a position where the rotating shaft 121a is eccentric, when the center of gravity of the vibrating body 122 moves downward, a downward force is applied to the drive section 12. When the center of gravity of the vibrating body 122 moves upward, an upward force acts on the drive section 12 .

Therefore, as shown in FIG. 5A, a downward force acts on the driving portion 12, thereby extending the elastic member 125 and moving the driving portion 12 downward. Further, as shown in FIG. 5B, an upward force acts on the driving portion 12, so that the elastic member 125 extends and the driving portion 12 moves upward.

Further, when the center of gravity of the vibrating body 122 moves forward from below, a forward force acts on the driving section 12, and when the center of gravity of the vibrating body 122 moves backward from above, the driving section 12 moves backward. A force acts.
Therefore, since the driving part 12 moves not only in the vertical direction but also in the front-rear direction, the driving part 12 makes a circular motion.

Therefore, the pile portion 13 connected to the vibration plate 124 of the driving portion 12 bites into the plowing layer or the hard layer when vibrating downward, and spreads the crushed pieces from the biting position when vibrating in the front-rear direction. When it vibrates downward again, it penetrates even deeper.
By repeating this operation multiple times per second, for example, 30 to 40 times at high speed, it is possible to easily crush even a hard plowing layer or a hard layer that cannot be penetrated by performing single-shot drilling several times. Therefore, it can be penetrated gradually and deeply while repeating the vibration.

Since the hydraulic motor 121 (see FIG. 2A) is used as the drive source, it is possible to generate high-torque rotation at high speed. By abutting the pile part 13 against the plowing layer or the hard layer, it can be pushed into the plowing layer or the hard layer and crushed. Therefore, a large-sized device that generates compressed air is not required, and it is possible to crush a hard plow bed layer or a hard bed layer while reducing the size of the device.

After boring at one location, the operator operates the base machine B to pull up the soil improvement device 10, move the base machine B to the next position, or extend the boom B2 or the arm B3 to improve the soil. The device 10 can be lowered to continue drilling.

In this manner, the soil improvement apparatus 10 can penetrate the pile portion 13 while gradually crushing the hard plowing layer or the hard layer while changing the drilling position by the base machine B shown in FIG. , the drilling time can be shortened, and workability can be improved. In addition, since three metal piles 132 can be used to drill three holes in one drill, workability can be further improved.

Further, since the outer frame plate 126 connected to the connecting portion 11 is connected to the transmission plate 123 via the elastic member 125, the vibration generated by the vibrating body 122 is transmitted without giving a large vibration to the connecting portion 11 side. The plate 123 allows transmission to the piling portion 13 . Therefore, the pile portion 13 can be efficiently vibrated by the vibration generator 122 rotating at high speed.

In the present embodiment, since the disk surface of the vibrating body 122 is parallel to the surface along the front-rear direction, the pile portion 13 vibrates in the front-rear direction. The pile portion 13 can be vibrated in the horizontal direction if it is installed parallel to the plane along the direction.

Also, in the present embodiment, one disk-shaped vibrating body 122 rotates, but a plurality of eccentric weights may rotate simultaneously. For example, if two eccentric weights are arranged in the same direction from the rotation axis to the center of gravity and rotated in opposite directions, the forces in the horizontal direction can be offset, thereby generating vertical vibration. be able to. Also, if the eccentric weights are rotated in the same direction, the degree of vibration can be doubled.

In this embodiment, three metal piles 132 are arranged, but one may be provided. However, considering work efficiency, it is preferable to use a plurality of wires. In addition to arranging them in one row, they may be arranged in columns and rows in a matrix. When a large number of metal piles are provided, the weight of the pile portion becomes heavy, so it is desirable to provide an appropriate number of metal piles.

Also, the soil improvement device 10 is suspended from an arm portion of the base machine B, which is composed of a boom B2 and an arm B3. However, when there is a limit to the height, such as when improving farmland in a house, the soil improvement device 10 may be suspended from the boom B2 with the arm B3 removed and the boom B2 used as an arm. . By doing so, it is possible to improve the soil in a low and narrow range.

INDUSTRIAL APPLICABILITY The present invention is suitable for a soil improvement apparatus that perforates agricultural land with a plowing layer and a hard layer to allow moisture and air to permeate the soil to improve soil suitable for microorganisms to live.

REFERENCE SIGNS LIST 10 Soil improvement device 11 Connecting part 12 Driving part 13 Pile part 111 Connecting plate 111a Through hole 112 Bottom plate 12 Driving part 121 Hydraulic motor 121a Rotating shaft 122 Vibrating body 121m, 121n Hose 123 Transmission plate 123a Central part 123b End part 124 Vibrating plate 125 elastic member 126 outer frame plate 13 pile portion 131 connection plate 132 metal pile B base machine B1 body portion B2 boom B3 arm

Claims (4)

A connecting part connected to an arm operated by the main body of the base machine, a driving part provided in the connecting part for generating continuous vibration, and the continuous vibration from the driving part drilling the farmland. a pile portion ;
The pile portion includes a plurality of metal piles provided to protrude downward from the driving portion,
In the soil improvement apparatus , the drive unit generates vibrations that swing in the vertical direction, the front-rear direction, or the left-right direction . 2. The soil improvement apparatus according to claim 1, wherein said drive section generates vibrations a plurality of times per second. 3. The soil improvement apparatus according to claim 1, wherein the drive unit includes a hydraulic motor as a drive source, and an eccentric weight that converts rotation of the hydraulic motor to vibrate the pile. The drive unit holds the hydraulic motor and the eccentric weight, and is connected to the transmission unit via an elastic member and to the coupling unit, and is connected to the transmission unit that transmits vibration generated by the eccentric weight to the pile unit. 4. The soil improvement device according to claim 3 , further comprising a frame portion which is shaped like a frame.

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