JPS608761B2 - Fumarole type deep cultivator - Google Patents

Description

[Detailed Description of the Invention] The present invention involves inserting a pipe into the soil where the roots of trees, etc. This invention relates to a pneumatic deep cultivator that forms useful pores and supplies air to the roots.

With a deep plow cultivator, the problem is how to easily insert the pipe into the soil to a sufficient depth.

In order to solve this problem, ``for example, the pipes are formed with an inner and outer double pipe that slide and guide each other, and a multiple pressure tank fixed to the upper end of the inner pipe can be moved up and down instead of a hammer to connect the outer pipe. It is designed to be driven into the soil.

Furthermore, for example, there is a structure in which a rotary awl is fixed to the tip of a pipe, and the pipe and the rotary awl are rotated by an air motor built in a pressure storage tank. However, the former method involves repeated manual labor of lifting and lowering the pressure storage tank, which poses problems such as heavy labor.

Furthermore, ``In the latter case, not only does it require heavy work to control the recoil torque of the air motor, but the pipe also sways laterally, increasing the size of the perforation, and leaking dirt to the ground through the gap between the perforation and the pipe. Therefore, there are drawbacks such as the pores formed in the pipe are small and their spread is narrow.In order to solve the above-mentioned problems, the present invention uses a pneumatic hammer to drill the air supply and perforation pipe. In addition, in order to prevent the occurrence of diseases such as white wax caused by the vibration of the air hammer, the cylinder of the air hammer is supported so as to be movable up and down via an elevating guide means. hand,
The structure is designed to prevent the vibration of the cylinder from propagating to the handle, and the force used by the operator to push down the handle and the weight of the pressure storage tank is used to suppress the jump of the air hammer and work advantageously when inserting the pipe. In order to prevent impact from being transmitted from the cylinder to the handle at the end of the lifting stroke of the tank, a check member is installed between at least one of the upper and lower restraining parts that limit the lifting stroke of the cylinder and the corresponding restrained part. The main feature is that a buffer is provided.

Embodiments of the present invention will be described below based on the drawings.

The air-type deep cultivator shown in FIGS. 1 to 3 has a vertical cylindrical pressure accumulating tank 1' and a vertical shaft air hammer 3 supported via a lifting guide means 2 so as to be movable up and down within a predetermined range. , a vertical air supply and perforation pipe 5 is relatively fixed to the cylinder 4 of the air hammer 3.

Handles 6 are connected in a cantilevered manner on each side of the pressure accumulation tank 1, and a connector 7 for connecting a compressed air supply hose (not shown) is provided near the handle 6 on the right side. . As shown in FIG. 3, an air inlet passage 8 that communicates with the pressure tank 1' and a compressed air supply line 9 that leads compressed air to the air hammer 3 are led out from this connector 7. The inlet valve (not shown) interposed in the compressed air supply path 9 and the air hammer operation valve 10 interposed in the compressed air supply path 9 are opened by pressing down separate levers 11 and 12 with fingers. A pilot operated outlet valve 14 is provided in the fume outlet passage 13 leading to the tip of the air supply/perforated pipe 5, and a pilot air passage 15 led out from the pressure accumulator tank is provided.
The jet operating valve 16 interposed therein is arranged at the base of the left handle 6. This warm air type deep cultivator operates by gripping both handles 6, protruding the lower end of the air supply and perforation pipe 5 to a desired point, and pushing down the lever 12 of the air hammer operation valve 10 with your finger to operate the air hammer 3. The air supply/perforation pipe 5 can be powerfully driven deep into the soil.

Here, ``the pressure accumulator tank, the cylinder 4, and the air supply/perforated pipe 5 are arranged vertically and coaxially in order, and their center centers and the center axes of the grips 17 of both handles 6 are located on the same vertical plane. Since the operation of the air hammer 3 does not generate any rotational force around the center axis of the grip 17 of both handles 6, the vibration of the air hammer 3 does not cause the wrist to turn back, and the air supply and perforation pipe is thereby 5 does not cause lateral vibration.The above-mentioned elevating guide means 2 consists of a vertical rattan guide tube 18 which is fixed to the pressure accumulating tank with an inner iron, and a piston 19 which is housed in this.The piston 19 is connected to the head of the cylinder 4. The piston rod 21 is secured to the upper end of the piston rod 21 which is integrally carried out from the cap 20.

An upper restraining part 23 consisting of the inner surface of the cover 22 that covers the upper side of the guide cylinder 18 and an upper restraining part 25 consisting of the upper end surface of the nut 24 or piston rod 21 that fixes the piston 19
An air cushion type buffering means 26 is provided between the two. That is, a supply air □28 having a diameter smaller than that of the piston 19 is placed in a cushion chamber 27 defined above the piston 19.
Then, the exhaust port 29 is closed, and the air discharged from the cushion chamber 27 when the piston 19 rises is throttled by the exhaust port 29, thereby increasing the internal pressure of the cushion chamber 27 and gradually slowing the rise of the piston 19. In this way,
The upper restraint part 25 is prevented from violently colliding with the upper restraint part 23. The air-action type shock absorbing means is advantageous in that it has a simple structure and requires a relatively small number of parts. In particular, if the parts of the lifting guide means also serve as parts of the buffer means 26 as in this example, this advantage becomes even more remarkable.

The compressed air supply path 9 is connected to the air supply □ 28 of the buffer means 26, and the air exhaust port 29 is connected to the air supply path 30 of the air hammer 3, so that the cushion chamber 27 is filled with compressed air. is always subjected to a stable downward biasing force, resulting in a strong cushioning effect.

Next, between the lower restraint part 31 made of an upwardly stepped surface formed on the inner peripheral surface of the intermediate height part of the guide cylinder 18 and the lower restraint part 32 made of the lower surface of the piston 19, an elastic force made of a spring is provided. Another buffer means 33 formed of a body is interposed, and the impact energy of the lower restrained part 32 against the lower restraint part 31 is reduced by this buffer means 33.

In FIG. 1, the reference numeral 34 is an air hole opened at the tip of the air supply/perforated pipe, 35 and 36 are dust-proof bellows, and 37 is a soil covering plate.

In carrying out the present invention, the elevating guide means 2 may be modified to include a plurality of sets of guide tubes and respective pistons housed in each guide tube, or a link mechanism such as a pantograph may be used to guide the elevating and descending. It is free to modify it to constitute a means.

Further, the buffer means may be modified so as to be provided only on either the upper or lower side.

However, in this case, it is desirable to be able to eliminate the collision in the downward direction of the cylinder with a buffer means. Moreover, in this case, an air cushion type and a spring type may be used together.
As explained above, the present invention is configured so that the air supply/perforation pipe can be driven into the soil using a pneumatic hammer. It is much easier to use than the conventional method, in which the air motor is used, and the air supply and perforation pipe is less likely to sway laterally, and warm air can be leaked to the ground between the pipe and the perforation. Without creating pond-like gaps, the energy from the explosive burst of warm air can be fully utilized, and large, wide-spread pores can be formed in the soil. In addition, since the air hammer and the pressure storage tank or handle can be moved up and down relative to each other via the lifting guide means, it is possible to block the vertical vibration of the air hammer from being transmitted to the handle, and it is also possible to prevent the vertical vibration of the air hammer from propagating to the handle. Since there is no vibration that causes the handle to swing around the vertical axis 0, it is possible to sufficiently prevent the occurrence of diseases such as white wax. Since the central axis ○ and the imaginary straight line connecting the grips of both handles are located on the same vertical plane, rotational force is not generated around the center axis of the grips of both handles due to the operation of the air hammer, and the supply is improved. The perforated pipe will not swing laterally and the perforation diameter will not increase. In addition, the upper and lower restraint parts are fixed to one side of the pressure storage tank and the air hammer, and the upper and lower restrained parts that move up and down between the two restraint parts are relatively fixed to the other, and a buffer member is installed between the restraint part and the restrained part. In addition to these effects, a buffer means is interposed between at least one of the upper and lower restraining parts that limit the vertical stroke of the cylinder with respect to the pressure storage tank and the corresponding restrained part. Since the structure is configured so that no impact is generated due to the collision between the restraining part and the restrained part, diseases such as white wax are more fully prevented, and the hand holding the steering wheel is less likely to shake, making it easier to feed. It is possible to prevent horizontal vibration of the perforated pipe due to hand shake, and it is possible to effectively form larger and wider pores.

Furthermore, the warm air outlet path connecting the pressure storage tank and the blowhole is opened and closed by a pilot-operated outlet valve that is activated by the pressure inside the pressure storage tank, so the compressed air stored in the pressure storage tank is instantly released. It can crush the ground finely with great explosive force, increasing its ability as a deep tiller.

[Brief explanation of the drawing]

The drawings show a fumarole-type deep cultivator according to the present invention, in which FIG. 1 is a front view, FIG. 2 is a plan view, and FIG. 3 is a sectional view taken along line A--A in FIG. 2. 1...Pressure storage tank, 2...Elevating guide means,
3... ...Air hammer, 4...Cylinder,
5... Air supply and perforation pipe, 6... Handle, 9... Compressed air supply path, 17... Grip, 18
... Guide cylinder, 19 ... Piston, 23 ... Upper check section, 2
5...Top restraining section, 26...Top buffer means, 27...
Cushion chamber, 28... Air supply □, 29...
Exhaust port, 30...Air supply path. Figure 1 Figure 2 Figure 3

Claims (1)

[Scope of Claims] 1. A pair of left and right handles 6 are fixed to the pressure accumulation tank 1, a perforated air supply pipe 5 is supported on the pressure accumulation tank 1, and a blowhole 14 opened at the lower end of the perforated air supply pipe 5 is connected to the pressure accumulation tank 1. In a fumarole-type deep cultivator in which a pressure accumulating tank 1 is connected to a fumarole outlet passage 13, an air hammer 3 having a vertical axis is supported by the accumulating tank 1 through an elevating guide means 2 so as to be movable up and down. The perforated air pipes 5 of the pressure accumulator tank 1, the cylinder 4 of the air hammer 3, and the perforated air pipes 5 are arranged vertically and coaxially, and their central axes are connected to both grips 17 of both handles 6. An imaginary straight line is located on the same elevation, upper and lower restraint parts 23 and 31 are placed on one side of the pressure accumulating tank 1 and air hammer 3, and upper and lower restrained parts 25 and 32 that are displaced up and down between the two restraint parts are placed on the other side. are fixed relative to each other, a buffer means is interposed between at least one of the upper and lower restraining parts and the restrained part, and a compressed air supply hose connector 7 is arranged on one handle 6, and this connector 7 and The pressure accumulator tank 1 is communicated with the fume inlet passage 8, and the connecting device 7 and the air hammer 3 are communicated with each other through the compressed air supply passage 9.
A flow path opening/closing valve is interposed between each of the flow path opening/closing valves, and both flow path opening/closing valves can be individually opened and closed by levers 11 and 12 supported by the handle 6 on the side where the connector is disposed. A pilot operated outlet valve 14 is interposed between the pilot operated outlet valve 14 and a pilot vent passage 15 to the pilot operated outlet valve 14 is led out from the pressure accumulator tank 1.
A fume type deep cultivator characterized in that a fume operation valve 16 interposed in one handle 5 is disposed on the other handle 6. 2 The elevating guide means 2 is formed by a vertical shaft guide cylinder 18 and a piston 19 fitted therein, and the pressure accumulator tank 1 and the cylinder 4
A guide cylinder 18 is fixed to one side of the piston 19, and a piston 19 is fixed to the other side, and an air supply port 28 and an exhaust port 29 having a diameter smaller than that of the piston 19 are opened in a cushion chamber 27 formed on one side of the piston 19. A fumarole-type deep cultivator according to claim 1, which has a buffer means 26. 3 Connect the compressed air supply path 9 to the air supply port 28, and
9. A fumarole-type deep cultivator according to claim 2, in which an air intake passage 30 of an air hammer 3 is connected to the air hammer 3 in communication. 4. The fume type deep cultivator according to claim 3, wherein the buffer means 33 is made of an elastic body. 5. The blower type deep cultivator according to claim 1, wherein upper and lower buffer means 26 and 33 are interposed between the upper and lower restraining parts and the restrained part. 6 The elevating guide means 2 is formed by a vertical guide cylinder 18 and a piston 19 fitted therein, and the pressure accumulator tank 1 and the cylinder 4
The guide tube 18 is fixed to one side of the piston 19, and the piston 19 is fixed to the other side, and at least one of the upper and lower buffer means 26 and 33 is opened to a cushion chamber 27 formed on one side of the piston 19. A fumarole-type deep cultivator according to claim 5, which comprises an air supply port 28 and an exhaust port 29 having a diameter smaller than that of the piston 19. 7 Connect the compressed air supply path 9 to the air supply port 28, and connect the
9. The fume type deep cultivator according to claim 6, in which the air intake passage 30 of the air hammer 3 is connected to the air hammer 3 in communication.