JPH0567206U - Cultivator loosening device - Google Patents

Abstract

(57) [Abstract] [Purpose] The present invention relates to an improvement of a plowing and expanding device for recovering air permeability and drainage of a plow, which makes it possible to insert an air blower into the soil well, and to improve The purpose is to prevent damage to the air blower due to contact. [Structure] A pair of guide frames, which are long in the vertical direction and have a substantially U-shaped cross section and are arranged to face each other, are provided at the rear part of the tractor, and an air tiller having an air blower is vertically arranged between the guide frames. It is movably supported.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 In this device, in order to restore the air permeability and drainage property of the hardened cultivator around the roots of crops such as fruit trees, an air blower is inserted into the cultivator and pressured air is ejected from the lower part. The present invention relates to a plow softening device that softens a plow and supplies air to the ground.

[0002]

[Problems to be Solved by Prior Art and Invention]

 Conventionally, as this type of device, there are those described in Japanese Utility Model Publication No. 53-91943 and Japanese Utility Model Publication No. 55-38328. The former device is constructed so that a deep tiller, which is an air tiller, can move up and down along a vertical connecting pin provided at the rear of the link mechanism. Since only the upper end of the section is supported, even if the deep plowing pipe is pierced straight into the ground, the deep plowing pipe tends to fall down. There is a drawback that the compressed air leaks from it and the soil crushing power is weakened. Moreover, in this type of device, since the peripheral part of the deep plowing pipe is not protected by the machine frame, a hard object such as a stone or a tree may hit the needle-shaped pipe during movement and damage it.

In the latter device, the air tiller is directly attached to the rear end of the link mechanism of the tractor and does not correspond to a guide guide. Therefore, the pipe is straight on the ground like the former device. There is a problem that it can not be pierced in the bottom and the deep plowing pipe is damaged.

[0004]

[Means for Solving the Problems]

 This invention was proposed in view of the above-mentioned problems, and the following technical measures were taken. That is, a power vehicle such as a tractor is provided with a pair of guide frames that are long in the longitudinal direction and have a substantially U-shaped cross section and are opposed to each other, and an air tiller having an air blower is provided between the guide frames. The plow softening device is characterized by being provided so as to be vertically movable.

[0005]

【Example】

 Embodiments of the present invention will be described below based on the embodiments shown in the drawings. First, the configuration will be described. As shown in the side view of FIG. 1, the air reservoirs 1, 1 and the compressor 2 are placed on the equipment frame 3, and the left and right lower links 5, 5 pivotally attached to the lower rear portion of the traction machine 4 are installed. The front lower part of the equipment frame 3 is pivotally attached to the rear part, and the rear part of the top link 6 pivotally attached to the center of the upper part of the traction machine 4, which is a power vehicle, is pivotally attached to the mast 7 standing on the equipment frame 3. The left and right lift arms 8 which are attached to each other and are formed into parallel links by the top links 6 and the lower links 5 and 5 having the same length, and which are vertically moved as the lift piston of the towing machine 4 is vertically moved. , 8 raises and lowers the lower links 5, 5 via the lift rods 9, 9, the apparatus frame 3 is configured to always move up and down in the same posture.

As shown in a side view in FIG. 3, the driving portion 11 having the air blower 10 at the lower portion and the air tank 12 are connected by the left and right mounting plates 13, 13 so that the mounting plate 13, Slide bosses 14, 14, 14, 14 are fixedly provided on the left and right sides of 13 to form an air tilling portion 15, and a pair of guide frames configured to face each other with a U-shaped cross section that is erected on an air blowout prevention plate 16 The slide bosses 14, 14, 14, 14 are loosely fitted in 17, 17, and the air tank 12 and the air blowout prevention plate 16 are connected by the lift cylinder 18 and its piston 18a. Then, as shown in a plan view in FIG. 2, a horizontal rod 19 having a hollow cylindrical shape is laterally arranged and fixed to the equipment frame 3, and is fitted in the horizontal rod 19 to be movable left and right. The front and rear rails 21, 21 having a U-shaped cross section are arranged and fixed in the front and rear direction on the horizontal frame 20, and the rollers 23, 23 are attached to the mounting frame 22 fixed to the guide frames 17, 17. , 23, 23 are arranged and pivoted in the front-rear direction, and the rollers 23, 23, 23, 23 are fitted to the front-rear rails 21, 21 to move the air tiller 15 in the front-rear direction. To do so. Then, as shown in FIG. 5, a hollow guide cylinder 25 is attached to the communication pipe 24 fixedly provided in the lower portion of the air tank 12, and the air blower 10 is airtightly inserted into the guide cylinder 25. A hitting mechanism similar to that of a well-known air hammer installed inside 11 is provided so as to be able to move up and down in the guide cylinder 25, and an electromagnetic valve 26 provided in the hitting portion 11 is energized to generate an air reservoir. The pressure air of 1 is supplied to the striking portion 11.

Further, an air jet valve 27 is provided below the air tank 12 to open and close a valve port 28 provided at a joint between the communication pipe 24 and the air tank 12, and as shown in FIG. The valve chamber 30 is attached to the seat 29 that is fixed to the seat 29, the piston 31a of the piston valve 31 inserted through the seat 29 is tightly fitted into the valve chamber 30, and the piston valve is provided outside the lid 32 that is screwed into the valve chamber 30. The head 31b of the piston valve 31 is removed, and the ball valve 33 loosely inserted in the valve rod 31c of the piston valve 31 is pushed toward the valve opening 28 by the spring 34, and the piston valve 31 is opened by the spring 35. When the piston valve 31 moves in the direction away from the valve opening 28 by pushing toward the valve 28, the washer 36 enables the ball valve 33 to move in the same direction.

Then, as shown in FIG. 6, a U-shaped hook 37 is externally fitted to the lid 32, and the hook 37 is pivotally attached to the lid 32 with pins 38 and 38, and fixed to the inner surface of the hook 37. In the posture shown in FIG. 5 in which the stopper 39 and the engaging piece 40 fixed to the upper surface of the hook 37 are in contact with the head portion 31b of the piston valve 31, the ball valve 33 causes the ball valve 33 to move to the valve opening 28. When the air tank 12 is moved downward, the engaging piece 40 engages with the release valve 41 attached to the mounting frame 22, and as shown in FIG. When the hook 37 rotates upward, the head portion 31b is disengaged from the stopper 39, so that the solenoid valve 42 excites to flow from the air hole 29a of the seat 29 into the back surface of the piston 31a in the valve chamber 30. Piston valve 31 is opened by pressurized air 2 The washer 36 is configured to move away from the valve 8 to separate the ball valve 33 from the valve opening 28.

Then, a tumbler type driving switch A, a filling switch B, and a jetting switch C are mounted on the mounting plate 13, respectively, and the operating pieces a1 and a2 of the driving switch A are mounted above and below the guide frame 17, and The operating pieces b of the filling switch B and the jetting switch C are attached to the mounting frame 22, and the operating pieces a1, a2, b are all made of an elastic material such as a rubber plate.

Further, as shown in FIG. 1, the operating piece d pivotally attached to the horizontal rod 19 by the pin 43 is grounded to turn on the grounding switch D, or the operating piece d is separated from the ground surface to turn on the grounding switch D. When it is turned off, the solenoid valve 44 that supplies pressured air to the lift cylinder 18 or discharges pressurized air from the lifted cylinder 18 is controlled. During the work, the lift arms 8 are raised so that the apparatus frame 3 is at a sufficiently high position. At this time, pressurized air is supplied to the lifting cylinder 18 and the piston 18a is cultivated in the aerial tiller 15. Since the towing machine 4 is moved, the air blower 10 is positioned above the desired tilling position, and the lift arms 8 and 8 are rotated downward to lower the apparatus machine frame 3. As shown in FIG. 1, the ground switch D is operated by the operating piece d to discharge the pressure air in the lifting cylinder 18 from the solenoid valve 44 to the atmosphere. Then, the air tiller 15 is movable up and down with respect to the guide frames 17, 17, so that the air blower 10 comes into contact with the ground first, which causes the air tiller 15 to move upward. As described above, the contact of the driving switch A is switched on by the upper operating piece a1 and is electromagnetically actuated to open the electromagnetic valve 26 and the head of the air blower 10 is hit by the hitting piston of the hitting mechanism. Then, the driving process is started. Then, the air blower 10 is gradually inserted into the ground, but before the desired depth shown in FIG. 4 is reached, the actuating piece b causes the filling switch B and the ejection switch C to move at the same time or before and after. And then switched.

That is, the contact of the filling switch B is turned off, and the electromagnetic solenoid 45 operates to close the filling valve 46 that supplies pressurized air from the air reservoirs 1 and 1 to the air tank 12 until then. Further, the contact of the ejection switch C is turned on to operate the solenoid valve 42 to supply the pressure air of the air reservoirs 1 and 1 into the valve chamber 30 through the air hole 29a, and the piston valve 31 to the stopper 39. It will come into strong contact.

Immediately before reaching the position of FIG. 4, the engaging piece 40 approaches the release valve 41 as shown in FIG. 7 and the engaging piece 40 engaged with the release valve 41 as shown in FIG. If the head portion 31b is disengaged from the stopper 39 when it is turned upward, the piston valve 31 pushed by the pressurized air vigorously projects and the ball valve 33 opens the valve port 28, so that the inside of the air tank 12 is closed. The pressurized air passes from the valve port 28, the communication pipe 24, the guide cylinder 25, the lateral holes 10a, 10a ... Of the air blower 10, the vertical hole 10b to the lower portion, and the jet air 10c. It will squirt and crush the plow.

On the other hand, the driving switch A is switched by the lower operation piece a2 at the same time as the above operations of the filling switch B and the ejection switch C, or later than these operations, so that the solenoid valve 26 is closed and the impact mechanism is operated. After that, the driving operation of the air blowing body 10 is stopped. Next, when the lift arms 8 and 8 are lifted and rotated to raise the machine frame 3, the operating piece d is moved downward and the earthing switch D operates to cause the solenoid valve 44 to move the pressure air in the air reservoirs 1 and 1. Since the air flows into the upper cylinder 18, the air tiller 15 starts to move upward, and the filling switch B and the ejection switch C are switched by the operating piece b. That is, the contact of the filling switch B is turned on and the electromagnetic solenoid 45 operates so as to open the filling valve 46 to start filling the air tank 12 with the pressurized air from the air reservoirs 1, 1 and the contact of the ejection switch C. Is turned off and the pressurized air in the valve chamber 30 is released from the solenoid valve 42 to the atmosphere.

Then, the piston valve 31 is retracted toward the valve opening 28 by the springs 34 and 35, the valve opening 28 is closed by the ball valve 33, and the ejection of the pressurized air from the air blowing body 10 to the ground is stopped, Further, the engaging piece 40 is rotated downward to bring the stopper 39 into contact with the head portion 31b, and the crushing work at the next position is continued. In this embodiment, since the air tilling part 15 having the pipe-shaped air blowing body 10 is supported by the guide frames 17 and 17 so as to be vertically movable from the left and right directions, trees or stones may hit the pipe during movement. It is possible to prevent breakage of the pipe. [Effects of the Invention] Since the present invention is configured as described above, it has the following technical effects.

That is, a power vehicle such as a tractor is provided with a pair of guide frames that are long in the longitudinal direction and have a substantially U-shaped cross section and face each other, and an air blower is provided between the guide frames. Since the air tiller is supported so that it can move up and down, the air blower of the air tiller pierces the ground straight, and the pressure air leaks from between the air blower and the ground. There is no problem that the soil crushing power is weakened, and the air blower is protected by being sandwiched by a pair of guide frames, so there is no risk of damaging it by contact with trees.

[Brief description of drawings]

FIG. 1 is an overall side view.

FIG. 2 is a plan view of a main part.

FIG. 3 is a side view of a main part.

FIG. 4 is a side view of a main part.

FIG. 5 is a vertical cross-sectional side view near the air ejection valve.

6 is a cross-sectional plan view of FIG.

FIG. 7 is a vertical cross-sectional side view of the operating posture of the air ejection valve.

FIG. 8 is a vertical cross-sectional side view of the operating posture of the air ejection valve.

[Explanation of symbols]

 1 Air Reservoir 2 Compressor 3 Device Frame 4 Traction Machine 5 Lower Link 6 Top Link 8 Lift Arm 10 Air Blowing Body 11 Driving Section 15 Air Cultivation Section 17 Vertical Rail 18 Lifting Means (Lift Cylinder)

Claims (1)

[Scope of utility model registration request] 1. A power vehicle such as a tractor, which is long in the longitudinal direction,
In addition, a pair of guide frames having a substantially U-shaped cross section and facing each other are provided, and an air tiller having an air blower is provided between the guide frames so as to be vertically movable. Plow tiller.