JP2540139Y2 - Resin injection gun - Google Patents

Description

[Detailed description of the invention]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an improvement of a resin injection gun used for repairing a floating mortar of a building or an inner wall of a tunnel.

[0002]

2. Description of the Related Art A conventional resin injection gun (A ') is such that a cartridge (b') filled with resin is mounted on the front of the resin injection gun (A ') as shown in FIG. The high pressure hose (41 ') connected to the bottom of the cartridge (b') was hanging down in front of the worker. Other resin injection guns (A ')
The high-pressure hose (40 ') for driving is also connected to the handle (21').

[0003] Incidentally, such a resin injection gun (A ')
The place where is used is a very dangerous place to work with scaffolding at a high place or a narrow gap in the building, such as repair of floating mortar on the wall of the building (C ') or repair of the inner wall of the tunnel. Therefore, even if it does not cause any obstacles on flat ground, it will appear as a fatal defect in the place.

In the case where the cartridge (b ') filled with resin is mounted on the front part of the resin injection gun (A') as in the prior art, the above-mentioned worker and the wall are connected. The two high pressure hoses (40 ') (41') hanging between them hinder the work,
In addition to lowering the work efficiency, there is also a risk of getting entangled with the feet of the worker at the high place, and improvement thereof has been desired.

In addition, when the cartridge (b ') filled with resin is mounted on the front of the resin injection gun (A') as in the prior art, there is a projection on the working wall. In this case, there is a problem that the cartridge (b ') collides with the wall projection and the resin filling operation cannot be performed.Therefore, the resin filled cartridge (b') is attached to the front of the resin injection gun (A '). There was also a demand for the development of a format that would not work.

[0006]

The first problem to be solved by the present invention is to turn a high-pressure hose or a resin supply hose to the back side of an operator to eliminate a high-pressure hose that hangs between the operator and a wall surface, thereby improving work efficiency. And eliminating the dangers of working at heights.

A second problem to be solved by the present invention is to develop a type in which a resin-filled cartridge is not mounted at the front of a resin injection gun, so that even if a projecting portion is present on a working wall surface, it will not be any problem. The resin filling operation can be performed without any trouble.

[0008]

The object of the present invention is to provide a piston (3) reciprocally movable in an internal cylinder (1).
And a piston (3) reciprocating in the cylinder (1), and penetrating through the piston (3), forming a resin passageway (4) from the rear end to the front end. Piston rod (6) that can be connected to resin supply hose (5) at the rear end with a hollow body
A piston rod extending from the cylinder portion (2), connected to the piston (3), and reciprocating with the piston (3).
(6) is stored in the injection cylinder (7), and when the trigger (8) is pulled, the cylinder (1) is connected to the pneumatic source (10), and the operating part (S With this feature, the high-pressure hose and the resin supply hose are turned to the back side of the worker, eliminating the high-pressure hose that hangs between the worker and the wall surface, thereby improving work efficiency. And the danger of working in high places can be eliminated, and at the same time, the resin filling work can be performed without any trouble even when the working wall has a protrusion.

[0009]

BRIEF DESCRIPTION OF THE DRAWINGS FIG. The gun body (a) has a piston (3) that can reciprocate inside.
And an injection cylinder portion (7) that houses a piston rod (6) that extends from the cylinder portion (2), is connected to the piston (3), and reciprocates with the piston (3). )
And an operating part (S) from which the cylinder (1) is connected to the pneumatic source (10) and the piston rod (6) projects when the trigger (8) is pulled.

In the cylinder section (2), a piston (3) is reciprocally housed in an internal cylinder (1), and the airtightness is maintained by an O-ring (12). (1
1) is an O-ring holding plate that holds the O-ring (12) from both sides. The piston (3) is urged by a compression coil spring (12a) in a direction away from the injection cylinder (7) (ie, toward the back of the gun body (a)). The piston rod (6) is a hollow body provided with a nipple (13) for connecting a resin supply hose at the rear, and a ball (14) and a spring (15) are housed inside the rear. It is urged backward. (1
2b) is a spacer which is screwed in front of the O-ring holding plate (11), and which has a different width as needed.
Can be replaced. Thereby, the stroke of the piston (3) can be changed by appropriately changing the gap (L) between the inner wall of the front end of the cylinder (1) and the spacer (12b).

The injection cylinder (7) extends from the cylinder (2) and houses a piston rod (6) connected to the piston (3) and reciprocating with the piston (3). . A nozzle (19) is screwed to the tip. A ball-shaped on-off valve (16) is provided inside the tip of the injection cylinder (7) to which the nozzle (19) is mounted, and this on-off valve (16) is oriented in the direction of the cylinder (1) (right side in the figure). An opening / closing spring (17) that presses and biases is housed, and the opening / closing valve (16) is constantly pressed against the valve seat (18) to close the valve seat (18). The nozzle portion (19) has a tweezer-shaped tip and is usually made of metal but may be made of resin.

The operating portion (S) has an air flow hole (2) inside.
And grip 0) are drilled (21), a trigger for opening and closing one end and is pivotally attached swingably trigger (8), the air flow hole in contact with the trigger (8) to (20) And an action section (not shown). This trigger action portion has a general structure, and compressed air is supplied to the cylinder (1) by pulling the trigger (8), and is released to the cylinder (1) when the trigger (8) is released. It functions as a so-called two-way valve through which the supplied compressed air escapes.

The resin (22) is, for example, a moisture-curable resin that cures in the presence of moisture, an underwater-curable resin that cures in the presence of moisture, a hydrophilic one-part foam urethane resin for high-viscosity resins, A low-viscosity filling resin for repair is used depending on the application. (Of course, it is not limited to these.)

(DA) is a diaphragm pump for supplying a low-viscosity filling resin for repair, and a resin supply hose (5) connected to a nipple (13) for connecting a resin supply hose at the rear of the piston (3). ) Is connected to the resin injection gun (A). The diaphragm operates together with the operation of the resin injection gun (A) to supply the resin.

A tank (23) stores cleaning water (24) therein, and high-pressure air is supplied into the tank (23) through a branch valve provided on a ceiling portion. This tank (23) is equipped with a separately prepared cleaning gun (26) and the aforementioned diaphragm pump.
(DA). (27) is a pressure regulating valve, which is a diaphragm pump (DA), a cleaning gun (26), and a resin injection gun (A).
This is for adjusting the secondary air pressure to be supplied to the device.

Thus, a pilot hole (28) having a depth of about 40 mm is formed in the floating mortar portion (27) of the outer wall of the building (c), and then a cleaning gun (26) is provided in the pilot hole (37). After spraying compressed air containing cleaning water (24) to flush out dust inside the pilot hole (28) and cleaning it, insert the hollow repair pipe (29) and insert the fixing pin ( The repair pin (29) is fixed in the pilot hole (28) by inserting the 30) and expanding the insertion end of the repair pipe (29).

Thereafter, as shown in FIG. 3, the nozzle (19) of the resin injection gun (A) is pressed against the opening of the repair pipe (29) to trigger the trigger (8). As shown in FIG. 2, the internal state of the resin injection gun (A) is such that the piston (3) is retracted, and the resin (22) is the injection cylinder between the ball-shaped on-off valve (16) and the tip of the piston rod (6). The state is stored in the section (7). In this state trigger (8)
, Compressed air is supplied to the cylinder (1) and pushes the piston (3) forward against the compression coil spring (12a). Then, the stored resin (22a) pushes the open / close valve (16) by advancing the piston rod (6), and is injected into the gap (31) on the back surface of the floating mortar (27) through the repair pipe (29). . Since the opening of the repair pipe (29) is coated with resin, when the nozzle portion (19) is made of resin, the adhesion is improved and no resin leakage occurs. When a metal nozzle (19) is used, for example, a waste cloth is interposed between the metal nozzle and the opening of the repair pipe (29). At this time, the resin supply hose (5) is connected to the piston rod (6) of the resin injection gun (A).
Because it is connected to the rear part, it will be turned around the worker's back.

The injection amount of the resin injection gun (A) at one time is determined by the moving distance of the piston rod (6) and the inner diameter of the injection cylinder hole (7). In this embodiment, about 1 to 4 cc. Depending on the degree of the gap (31) in the floating mortar (27), the trigger (8) is pulled many times to increase the injection amount. The injection amount can be changed by replacing the spacer (12b). The injected resin (22) absorbs moisture in the air and residual water during cleaning and hardens to fix the floating mortar (27). In this way, the repair work of the floating mortar (27) will be performed.

When the trigger (8) is loosened, the compressed air supplied to the cylinder (1) is released by the operating portion (S) acting as a two-way valve, and the piston (3) is repelled by the compression coil spring (12a). It is pushed back by the force, and the resin storage part in the injection cylinder part (7) between the ball-shaped on-off valve (16) and the tip of the piston rod (6) becomes hollow, and the diaphragm pump (DA) The resin (22) is newly supplied by the action of (1). The resin supply pressure of the diaphragm pump (DA) overcomes the spring (15) of the ball (14) at the rear end of the cylinder rod (6), but does not overcome the open / close spring (17) of the ball-shaped on-off valve (16) and the resin storage pressure Part of resin (22)
The supply of the resin (22) is stopped at the place where the is filled.

In this way, the repair work on the wall surface (C) of the building and the inner wall (C) of the tunnel is advanced.

[0021]

[Effect of the Invention] As described above, the resin injection gun of the present invention has a hollow piston rod, has a resin passage formed from the rear end to the front end, and connects a resin supply hose to the rear end. As a result, the high-pressure hose or resin supply hose is turned to the rear side of the worker, eliminating the high-pressure hose hanging between the worker and the wall surface, improving work efficiency, and working at heights. In addition, since the resin can be supplied from the rear end of the piston rod in this way, even if there is a protrusion on the work wall, the resin filling operation can be performed without any problem. There is an advantage that can be performed.

[Brief description of the drawings]

FIG. 1 is a flowchart of a use state of an embodiment of the present invention.

FIG. 2 is a sectional view of the resin injection gun according to one embodiment of the present invention;

FIG. 3 is a cross-sectional view of a resin injection state by the resin injection gun of the present invention.

FIG. 4 is a sectional view of a cleaning gun used in the present invention.

FIG. 5 is a cross-sectional view of a conventional resin injection gun.

[Explanation of symbols]

 (1) Cylinder (2) Cylinder (3) Piston (4) Resin passage (5) Resin supply hose (6) Piston rod (7) Injection cylinder (8) Trigger (10 )… Pneumatic source (S)… Working part

 ──────────────────────────────────────────────────続 き Continuing on the front page (72) Inventor Hideo Miura 3-4-1 Asahioka-Okanakamachi, Sakai-shi, Osaka Yutaka Industry Co., Ltd. (72) Inventor Norihide Kinoshita 3- 10-1 Abenosuji, Abeno-ku, Osaka-shi No. Kinoshita Kaken Co., Ltd. (72) Inventor Kenichiro Noguchi 2-10-10 Toyomata-Kita

Claims (1)

(57) [Scope of request for utility model registration] 1. A cylinder section in which a piston is reciprocally accommodated in an internal cylinder, a piston reciprocating in the cylinder, and a penetrating piston, and a resin passage is formed from a rear end to a front end. A piston rod, which is a hollow body, to which a resin supply hose can be connected at the rear end, an injection cylinder part that extends from the cylinder part and houses a piston rod connected to the piston and reciprocating with the piston, and a trigger. A resin injection gun characterized in that the cylinder is connected to a pneumatic source when it is pulled, and an operating part from which a piston rod projects.