JPS5926803Y2 - Valve operating device for pneumatic soil conditioner - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a valve operation device for a pneumatic soil improvement machine in which a prime mover and a compressor are directly connected, and a surge tank, a valve mechanism, a driving tube, etc. are provided, and the pneumatic soil improvement machine is configured to be portable.

In other words, it is possible to improve the soil for growing crops by injecting compressed air into the soil through a driving tube inserted into the soil, so the valve mechanism for adjusting the discharge of compressed air can be opened and closed reliably and easily. In addition, it is easy to maintain the compressed air in a discharge state without any trouble when starting and warming up the prime mover, especially in the type where the prime mover and compressor are directly connected, making it easier to handle when starting. It is provided that the structure is simple and can be suitably implemented.

Next, the embodiment shown in the drawings will be described.

Figure 1 shows a front view of the entire pneumatic soil conditioner, with a manual entrainment starter 11. crankcase part 12,
A prime mover A including a cylinder part 13, a muffler 15, etc.
and a fuel tank 14 is installed on the side thereof, and a case 21. is installed directly below the prime mover A. A compressor B consisting of a cylinder 22, an air purifier 23, etc. is installed in series, and the air purifier 23 is installed in the lower part of the case 21 of the compressor B.
and a surge tank D connected through pipe E,
The surge tank D is installed and configured so that compressed air from a compressor B driven by a prime mover A can be stored in a surge tank D.

Further, a handle C is installed around the prime mover A and the compressor B, and the handle C is attached to the case 210.
A handle pipe 31 fixed to the circumferential surface is extended upward on both sides, grips 32 are attached to the tops of both sides of the handle pipe 31 on both sides, and stands 33 which also serve as protectors for the prime mover A are connected to the handle pipe 31 at the front and rear. Set and configure.

A valve mechanism J is installed at the bottom of the bottom plate F fixed to the bottom of the surge tank D with bolts H.
A valve hole 41a is formed below the center of the body 41 which is aligned with the lower part of the bottom plate F and fixed with a bolt P.
A spherical valve body 42 having a one-way valve hole 42a that communicates with the valve hole 41a is rotatably fitted into the valve seat 43 fitted above the spherical valve body 42. A valve hole 44a is formed in the fitting body 44 fitted so as to be joined, and the end of a rotatable valve shaft 45 fitted laterally into the body 41 with the tip protruding outward is connected to the valve body. 42, and the valve stem 45 is locked by the bonnet 47 so that it does not separate.By rotating the valve stem 45 by 90 degrees, the valve body 42 is similarly rotated to open and close. Configure it so that it can be used.

Further, a flange 61 and a stroke pipe N are successively joined to the lower part of the body 41 and fixed with bolts P, and a guide cylinder communicating with the valve hole 41a is located inside the center of the striking part 61a formed in the center of the flange 61. The upper part of the guide cylinder 62 is fitted and fixed, and the upper part of the driving cylinder 82, which is slidably fitted to the guide cylinder 62, has a hit part 81 that can abut against the lower surface of the hitting part 61a.
A dish-shaped protector Q that can be fitted and fixed to the ground is installed at the lower part of the stroke pipe N, and a cone 83 that plunges into the soil is at the lower tip of the driving tube 82 that extends downward from the protector Q. The tip of the valve shaft 45, which is constructed by installing a blowhole 83a in the vicinity thereof, is connected to an outer seven-bar mechanism K, and a spacer 54 is fitted to the lever mechanism. The intermediate portion of the lever 53 is fitted and fixed to the tip of the support rod 53d which is rotatably inserted into the body 41, a petal 53c is fixed to one end of the lever 53, and a petal 53c is formed at the other end of the lever 53. A pin 51a that fits into the elongated hole 53a is fixed to one end of the short valve lever 51, and the other end of the valve lever 51 is fitted to the tip of the valve shaft 45 and fixed with a centering pin 52, and the lever The upper end of the tension spring L from below is connected to the bow hook part 53b bent at the tip of the other end of the valve lever 53, so that the valve lever 51 is rotated downward by the tension force of the tension spring L. The valve body 42 is installed and configured so that when the valve body 42 is in a closed state and the petal 53c is depressed slightly downward, the short valve lever 51 is rotated 90 degrees upward according to the lever ratio and the valve body 42 is opened. .

Further, the upper part of the support plate 91, which extends above the outside of the lever 53, is fixed to the lower side surface of the bottom plate F with bolts H, and is fixed to the cylindrical metal 91a fixed to the support plate 91 with a roll pin 95 at one end. Pin 92 with locking body 94
When the spring 93 is inserted between the pushing part 92a at the tip of the pin 92 and the tip of the barrel metal 91a, and the petal 53c is pushed down and the pin 92 is pushed in, the engagement of the locking body 94 causes the petal 53c to be pushed down. The locking body 94
The configuration is such that when the petal 53c is pushed down, the pin 92 moves outward under the action of the spring 93 and is disengaged from the lever 53, thereby releasing the push-down position.

Therefore, when starting the prime mover A during work, when the pedal 53c is depressed downward and the lever 53 is rotated around the support rod 53d, the valve lever 51 is rotated 90 degrees. At the same time, the valve body 42 rotates 90 degrees via the valve shaft 45, and the valve body 42 becomes open as shown in FIG.
When the pedal is expanded and pushed in, the locking body 94 is engaged to prevent it from coming off as shown in FIG. 6 by releasing the pedal 53c, and the valve body 42 can be operated to maintain the open state. Even if the engine A is started by the manual retraction starter 11 in this state, the compressed air generated by the compressor B escapes from the injection port 83a of the driving cylinder 82, and the prime mover A can be started.

Further, when the pedal 53c is slightly depressed and the lever 53 is lowered, the locking body 94 is released to the side of the lever 53 due to the elasticity of the spring 93, and when the pedal 53c is released from the pedal, the pedal 53c and the lever 23 move back as shown by the imaginary line in FIG.
rotates 90 degrees and becomes closed.

During work, the tip cone 83 of the driving cylinder 82 is inserted into the soil, and the driving cylinder 82 is deeply inserted into the soil by the impact caused by the hammer action of the striking part 61a and the struck part 81, and the petal 53c is Operate the valve body 42 by depressing,
Work can be carried out by forcing compressed air into the soil from the blowhole 83a.

As described above, the present invention provides a pneumatic soil improvement machine in which the prime mover and the compressor are directly connected, and is equipped with a surge tank, a valve mechanism, a driving cylinder, etc., and is configured to be portable. Since the valve body is installed so that it can be opened and closed by a lever mechanism, and the valve body can be held open by engaging a locking body that can be engaged with and released from the lever mechanism, it is possible to operate the valve body by pressing the pedal. This allows the valve mechanism to be opened and closed reliably and easily, and when the prime mover is started, the compressed air can be easily discharged by simply engaging the locking body with the lever mechanism. , the engine has the advantage of being easy to start and warm up, and can be conveniently implemented with a simple structure.

[BRIEF DESCRIPTION OF THE DRAWINGS] The drawings show the implementation of the present invention, and FIG. 1 is an overall front view;
Figure 2 is a side view of a part of Figure 1, and Figure 3 is a side view of Figure 2.
4 is a sectional view taken along line I, FIG. 4 is a sectional view taken along line ■-■ in FIG. 2, and FIG. 5 is a sectional view taken along line ■-■ in FIG.
FIG. 6 is an explanatory diagram of the operation of FIG. 5. A... Prime mover, B... Compressor, D... Surge tank, J... Valve mechanism, 82... Driving tube, 42 ... Valve body, 5
3c...petal, K...lever mechanism,
94...Latching body.

Claims (1)

[Scope of utility model registration request] In a pneumatic soil improvement machine in which the prime mover and the compressor are directly connected and are configured to be portable and equipped with a surge tank, a valve mechanism, a driving tube, etc., the valve body of the valve mechanism is opened and closed by a petal type lever mechanism. 1. A valve operating device, characterized in that the valve operating device is configured so that the valve body can be held open by engaging a locking body that can be engaged with and disengaged from the lever mechanism.