JPH025751Y2 - - Google Patents

Description

[Detailed description of the invention] [Industrial application field] This invention involves inserting each end of a plurality of injection pipes into the soil, each having a spout, and injecting liquid into the soil from each of the spouts. This article relates to a soil injection tool used for soil injection.

[Conventional technology]

Figure 8~ as a conventional soil liquid injection tool of this kind
What is shown in FIG. 11 has been proposed. Figure 8 is a front view of the driving part inserted into the soil and the liquid is sucked into the cylinder, and Figure 9 is the line shown in Figure 8.
Fig. 10 is a front view of the state in which the operating handle is pulled from the state shown in Fig. 8 and liquid is injected into the soil from the spout, and Fig. 11 is an enlarged cross-sectional view taken along line XI-XI in Fig. 10. It is a diagram.

In the figure, reference numeral 1 denotes an injection tube, which is composed of a tip driving part 1a having a spout 2, a piston rod part 1b, and an intermediate part 1c. 3 is the piston rod part 1b and the intermediate part 1
4 is a piston formed integrally with the piston rod portion 1b at the base end of the injection pipe 1; 5 is a cylinder slidably placed over the piston rod portion 1b and the piston 4; , and has a top cap 5a. Reference numeral 6 denotes an inlet provided near the piston of the piston rod portion 1b, which allows the inside of the cylinder 5 and the inside of the injection pipe 1 to communicate with each other. Reference numeral 7 denotes a suction valve provided outside the cylinder 5, and communicates with the inside of the cylinder 5 through a pipe 8. 9 is a backpack-type tank, 10
1 is a hose for connecting the backpack tank 9 and the suction valve 7; 11 is a connecting plate for connecting the two left and right cylinders 5; 12 is installed upright on the connecting plate 11 and attached to the injection pipe 1. Support rod, 13 is support rod 1
The operation handle 2 is an adjustment screw screwed into the top cap 5a of the cylinder 5, and its tip abuts against the piston 4, making it possible to adjust the amount of movement of the piston 4. 15 is a return spring for the piston 4, 1
Reference numeral 6 denotes a depth adjustment plate for determining the insertion depth of the injection tube 1.

Next, the operation will be explained. When carrying the backpack-type tank 9 on your back and moving it while holding the operating handle 13, the piston 4 returns to the cylinder 5 due to the spring 15.
The suction valve 7 is closed (11th
Therefore, the liquid in the backpack tank 9 does not enter the cylinder 5 from the suction valve 7 and leak from the nozzle 2. When the operating handle 13 is pushed in and the driving part 1a of each injection tube 1 is inserted into the soil, the piston 4 rises relative to the cylinder 5 as shown in FIGS. 8 and 9. When the discharge valve 3 closes due to the negative pressure inside, the suction valve 7 opens simultaneously, and the liquid inside the backpack tank 9 is sucked into the cylinder 5. When the operating handle 13 is pulled up and only the cylinder 5 is lifted, the piston 4 descends relative to the cylinder 5 as shown in FIGS. At the same time as closing, the discharge valve 3 opens, and the liquid in the cylinder 5 enters the injection pipe 1 through the inlet 6 and is injected into the soil through the nozzle 2. When the operating handle 13 is further pulled up, each driving portion 1a is pulled out of the soil and returned to its original moving state.

[Problem that the invention attempts to solve]

In the conventional soil liquid injection device as described above, the two left and right cylinders 5 are connected to the support rod 12 by the connecting plate 11.
Since the spacing L between both injection pipes 1 does not change, for example, if the arrangement of embankments a where liquid is to be injected exactly matches the spacing L between both injection pipes 1, the machine must be held straight when working. If this is done, both injection pipes 1 will be inserted into the middle of the embankment a as shown in Figure 8, allowing efficient liquid injection, but if the interval between the embankment a and the interval L between the two injection pipes 1 does not match. has both injection tubes 1
There was a problem in that it was difficult to insert the liquid into the middle of each of the embankments a on both the left and right sides, and efficient liquid injection could not be performed.

This invention was made to solve this problem, and by making it possible to change the spacing of the injection pipes according to the spacing of the embankment a, it is possible to easily perform efficient liquid injection. The purpose is to provide ingredients.

[Means for solving problems]

The soil liquid injector according to this invention includes a swing arm to which an injection tube is fixed to the distal end and rotatably fitted to the support rod at the proximal end.

[Effect]

In this invention, since the injection tube is fixed to the distal end and the pivot arm is rotatably fitted to the support rod at the proximal end, the fixed position of the pivot arm relative to the support rod can be adjusted along the rotation direction. By changing the distance between the injection tubes, the mutual spacing between the injection tubes can be changed.

[Example of idea]

An embodiment of this invention will be described below with reference to FIGS. 1 to 7. Figure 1 is a rear view of the driving part inserted into the soil and liquid is sucked into the cylinder, Figure 2 is an enlarged cross-sectional view taken along the line - in Figure 1, and Figure 3 is the same as in Figure 1. 4 is a sectional view taken along line 1 in FIG. 1, FIG. 5 is a sectional view taken along line 1 in FIG. FIG. 7 is a rear view of the state in which the liquid is injected into the soil from the spout, and FIG. 7 is an enlarged sectional view taken along the line - in FIG. 6. In each figure, the same or corresponding parts as those of the above-mentioned conventional device are given the same reference numerals, and the explanation thereof will be omitted.

In the figure, reference numeral 17 denotes a shaped support rod, which has support shaft portions 17a on both sides. 18 is the operation handle,
It is placed over the support shaft portion 17a and fixed to the support rod 17 with bolts 19. Reference numeral 20 denotes a rotating arm, which includes a base end cylinder part 20a which is rotatably fitted into the support shaft part 17a, an upper arm 20b whose distal end is fixed to the cylinder 5, and a lower end cylinder part 21 which is rotatably fitted into the intermediate part 8c. It consists of an arm 20c. Reference numeral 22 denotes a retaining ring fixed to the support shaft portion 17a with a screw 23, and the pivoting arm 20 is
The base end cylindrical portion 20a is fixed to the support shaft portion 17a. 24 is a metal fitting fixed to the support shaft portion 17a with a bolt 19; 25 is a metal fitting 24 that connects the support rod 17;
It is a relay pipe fixed to, and both ends communicate with each suction valve 7 through a hose 26, and the middle part communicates with the backpack-type tank 9 through a hose 28 via a tank base 27.

The operation of this machine is the same as that of the conventional machine described above in terms of liquid injection, so a brief explanation will be provided. That is, the first
In Figures 1 to 5, the operation handle 18 is pushed in and the driving part 1a of each injection pipe 1 is inserted into the soil, and the cylinder 5 is inserted into the soil.
The liquid in the backpack tank 9 is being sucked in through the hose 28, the tank 27, the relay pipe 25, the hose 26, and the suction valve 7, and FIGS. Only the cylinder 5 is lifted up, and the liquid inside the cylinder 5 is injected into the soil from the spout 2.

In the state shown in FIG. 1, the swing arm 20 is fixed to the support shaft 17a by the setscrew 22a in a straight line on both sides of the support rod 17 as shown in FIG. The interval L is the maximum. Then, as shown in FIG. 5, by loosening the set screw 22a and folding the pivot arm 20 inward, the distance between the two injection tubes 1 can be reduced to l.

In the above embodiment, if the position of the hole in the support shaft portion 17a into which the bolt 19 is screwed is shifted upward,
Since the operation handle 18 can be raised upward, the height of the machine can be increased.

Further, although the support rod 17 is shaped in the above embodiment, it may be one vertical one, and although the injection tube 1 is shown as having both sides pivoting, it may be fixed on one side, and the injection tube 1 may have two sides. For example, it may be three.

In the above embodiment, the piston 4 and the cylinder 5 are used to suck the liquid in the backpack tank 9 and inject it into the soil from the spout 2 of the injection pipe 1. As shown in No. 144786 or Japanese Utility Model Application No. 60-64703, a power sprayer is used to forcefully feed liquid into the injection pipe, and the on-off valve is opened and closed by the relative movement of the support rod and the injection pipe. It is obvious that the same effect can be obtained by injecting water into the soil from a spout.

[Effect of idea]

As explained above, this idea, for example, embankment a.
Since the spacing between the injection tubes can be changed according to the spacing between the two, there is an effect that efficient liquid injection can be performed easily.

[Brief explanation of the drawing]

Figure 1 shows an embodiment of this invention, a rear view of the driving part inserted into the soil and liquid being sucked into the cylinder, and Figure 2 an enlarged sectional view taken along the line - in Figure 1. , FIG. 3 is an enlarged sectional view taken along the line - in FIG. 1, FIG. 4 is a sectional view taken along the line - in FIG. Figure 7 is an enlarged sectional view taken along the line - in Figure 6, and Figure 8 shows the conventional machine. Figure 9 is a front view of the state in which the liquid is sucked into the cylinder after the insertion part is inserted into the soil, and the line shown in Figure 8 -
Fig. 10 is a front view of the state in which the operating handle is pulled from the state shown in Fig. 8 and liquid is injected into the soil from the spout, and Fig. 11 is an enlarged cross-sectional view taken along line XI-XI in Fig. 10. It is a diagram. In the figure, 1 is an injection tube, 1a is a tip driving part,
2 is a spout, 17 is a support rod, 18 is an operating handle, 20
is a rotating arm. Note that the same reference numerals in each figure indicate the same or corresponding parts.

Claims (1)

[Scope of utility model registration request] A soil liquid injector for injecting liquid into the soil from each of the injection pipes by inserting each tip driving part having a plurality of injection pipe spouts into the soil, which is attached to the injection pipe and operated by an operating handle. In the device having a support rod that is operated and controlling the injection of liquid from the spout using relative movement between the support rod and the injection tube, the injection tube is fixed to the tip side. and a rotating arm whose proximal end is rotatably fitted to the support rod, and by changing the fixed position of the rotating arm with respect to the support rod along the rotational direction, the mutual spacing between the injection tubes can be adjusted. A soil liquid injection tool characterized by being changeable.