JPH0744675Y2 - Injector - Google Patents

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to an injector for injecting resin or the like in order to repair cracks or the like in concrete. Since the enclosed injectant storage member and the propulsive force generating member such as the spring are independent, workability at the work site is greatly improved.

“Prior Art” FIG. 5 shows a conventional injector. This is composed of a cylinder 1 and a propulsion force generating portion 3 which is interlocked with a piston 2 slidable inside the cylinder 1. The propulsive force generating unit 3 may be a spring, rubber or the like, but there is also a propulsive force using a shape memory alloy. Further, an injection port 4 is formed at the tip of the cylinder 1. The rear end 1B of the cylinder 1 is open, and the piston 2 and the propulsive force generator 3 advance (arrow a) or retract (arrow b) in the directions shown by arrows a and b in the figure.
You can do it.

In order to inject resin or the like into cracks or the like of concrete using an injector having a structure as described above, for example, a spring is used as a propulsive force, first the propulsive force generating portion 3 and the piston 2 are moved to predetermined positions by arrows in the drawing. Retreat in the direction of b. Next, the cylinder 1 is filled with a required amount of the injecting agent 5 through the injection port 4. After making such a state, press the injection port 4 at the tip of the injector against the cracked portion of the concrete,
By pushing the end portion 6 of the propulsion force generating member 3, the piston 2 is advanced to the injection port 4 side at the tip of the cylinder 1 as shown in FIG. 6, and the injection agent 5 is injected using the elastic force of the spring. Entrance 4
Push it into the crack.

[Problems to be solved by the device] However, in such conventional injectors, since the cylinder, the piston, and the propulsion force generating unit are integrated, resin or the like is injected into the cylinder of the injector. This injector cannot be used until after the filling of the infusate has been completed, the work of filling the infusate must be performed.

Further, these injectors cannot be used again until after the interior of the cylinder has been cleaned after the injection agent has been injected into cracks in concrete. In addition, this cleaning requires an organic solvent and the like, and if it is not performed immediately after use, the injection agent such as the resin solidifies, and reuse of the injector becomes difficult.

In addition, since the filling of the injection agent into the cylinder of the above injector and the cleaning of the inside of the cylinder after use are both performed at the work site, and conventional equipment requires a lot of time for these operations, an actual repair work is required. Spend less time on.

Further, the injectable agent and the organic solvent for cleaning are harmful to the human body and must be sucked at the work site, which poses a problem of putting the worker at risk.

Further, since the cylinder, the piston, and the propulsion force generator are integrated, they are large and inconvenient to transport or handle at the work site.

The present invention has been made in view of the above circumstances, and it is not necessary to fill an injectant or wash the inside of a cylinder at a work site, and work efficiency can be significantly improved.
It is an object to provide a compact injector which is convenient to carry and handle.

[Means for Solving the Problems] The injector of the present invention for achieving the above-mentioned object has an injection port at one end and an injection agent such as a resin in advance in a cylinder having a piston attached at the other end. A connecting portion is provided at one end on the piston side of the enclosed infusate storage member, and a propulsive force generation source made of an elastic member made of a shape memory alloy for pushing the piston toward the injection port and a storage cylinder for storing the same A connecting portion is provided at the end portion in the direction in which the propulsive force of the propulsive force generating member consisting of
An air hole for adjusting the internal temperature is provided, the elastic member reversibly expands and contracts due to temperature change, and when expanded, pushes out the piston by its deforming force. The injectant accommodating member and the propulsive force generating member are integrally used by connecting the connecting portions provided to the member and the propulsive force generating member, respectively.

[Operation] In the injector having such a configuration, since the injectant such as resin is filled in the cylinder of the injectant housing member in advance, it is necessary to fill the injector with the injectant at the work site. Absent.

Further, since the injectant storage member is separated from the propulsive force generating member, the propulsive force generating member can be used as it is without cleaning it after use, so that the work efficiency is significantly improved.

Further, since the injectant storage member and the propulsive force generating member are connected to each other when used to form an injector, it is compact and convenient for transportation and convenient for handling at the work site.

[Embodiment] Hereinafter, an embodiment of the injector of the present invention will be described in detail with reference to the drawings.

1 to 4 show an embodiment of the injector of the present invention.

FIG. 1 shows an infusate storage member 10 of the present invention.
This is composed of a cylinder 11 and a piston 12 slidable in the cylinder 11. The cylinder 11 is filled with an injecting agent 5 such as resin, and an injection port 14 is provided at the tip. The inlet 14 is sealed with a cap 15.

Further, an outer screw 16 is provided at the rear end of the cylinder 11. The outer screw 16 is for connecting to a propulsive force generating member 20 described later.

The material of the cylinder 11 is polypropylene or the like, and the material of the piston 12 is cork, wood, rubber,
It is made of metal.

FIG. 2 shows an example of the propulsive force generating member 20 of the present invention. In this device, a coil spring 22 as an elastic member made of a shape memory alloy is housed in a spring housing cylinder 21. An inner screw 23 that is screwed with the outer screw 16 provided on the injectant storage member 10 is provided at the tip of the spring storage cylinder 21. Further, the spring storage cylinder 21 is provided with an air hole 24 for adjusting the internal temperature.

In order to use the infusate storage member 10 shown in FIG. 1 and the propulsive force generating member 20 shown in FIG. 2 as an injector, as shown in FIG. Force generating member
It is carried out by screwing the inner screw 23 of 20 together to integrate them.

In the case of this example, the propulsive force is due to the deformation force caused by the temperature change of the spring made of shape memory alloy,
First, the coil spring 22 is cooled to a temperature below the martensite phase and housed in the spring housing cylinder 21, and then the propulsive force generating member 20 is provided with an internal screw provided in each of the infusate housing members 10.
Attach by screwing 23 and the external screw 16.
After such a state, as shown in FIG. 4, if necessary, an injection mounting washer 31 is preliminarily attached to the place where the concrete wall 30 is to be injected, and the injection agent is attached to the opening of the injection mounting washer 31. Remove the cap 15 and screw in the inlet 14 of the storage member 10. Then, the air hole 24 is formed in the spring storage cylinder 21.
Since the outside air enters the spring housing cylinder 21 through the air holes 24, the coil spring 22 in the spring housing cylinder 21 is quickly warmed and the piston 12 is injected using the elastic force of expansion. The injection agent 5 is injected into the portion such as the crack 32 by pushing toward the inlet 14.

This operation has an advantage that the number of propulsive force generating members 20 can be smaller than the number of injectant storage members 10. Further, since the propulsive force generating member 20 is not contaminated by the injecting agent 5 when the injection work is performed, it is not necessary to perform the cleaning work, so that the work efficiency is significantly improved.

A coil spring made of a shape memory alloy has been taken as an example of the propulsive force generating source of the propulsive force generating member, but the propulsive force generating source used in the injector of the present invention is an elastic member made of a shape memory alloy. If there is any, it is not limited to this.

Further, although the screw is used as a method for connecting the infusate storage member and the propulsive force generating member, the method for connecting the infusate storage member and the propulsive force generating member in the present invention is not limited to this. .

"Effect of Invention" Since the present invention is configured as described above,
Since the injectant storage member and the propulsive force generating member are used integrally, it is not necessary to fill the injector with the infusate at the work site.

Further, since the injectant storage member is separated from the propulsive force generating member, the propulsive force generating member can be used as it is without cleaning it after use, so that the work efficiency is significantly improved.

Further, since the injectant storage member and the propulsive force generating member are connected to each other when used to form an injector, it is compact and convenient for transportation and convenient for handling at the work site.

Furthermore, as in the past, when a simple elastic member such as a coil spring or rubber is used as a thrust source, or a mainspring or a thrust bar is used, the thrust source is retracted by input before injection, and the thrust force is set during injection. It is necessary to press the end of the generating member with input, or to rotate the reverse rotation stop gear manually.Therefore, there is a possibility that workability will be reduced especially in a bad working environment such as a tunnel. However, according to the present invention, it is only necessary to move the piston forward due to the rapid temperature change of the elastic member due to the air hole without relying on human power, and it is possible to prevent the above-mentioned deterioration in workability.

[Brief description of drawings]

FIG. 1 is a sectional view showing an infusate storage member of the present invention, FIG. 2 is a sectional view showing a propulsive force generating member of the present invention, and FIG. 3 is an infusate storage member of the present invention and propulsion. FIG. 4 is a cross-sectional view showing a combination of a force generating member and an injector, and FIG. 4 is a concrete wall or the like using an injector by combining the injectant storage member of the present invention and a propulsive force generating member. FIG. 7 is a schematic cross-sectional view showing a state where a conventional injection agent or the like is injected into the cracked portion. 5 and 6 are schematic sectional views showing an example of a conventional injector. 5 ... injectant, 10 ... injectant storage member, 11 ... cylinder, 12 ... piston, 14 ... injection port, 20 ... propulsion force generating member, 22 ... coil spring.

Claims (1)

[Scope of utility model registration request] 1. A connecting portion is provided at one end on the piston side of an injecting agent storage member in which an injecting agent such as a resin is sealed in advance in a cylinder having an inlet at one end and a piston attached at the other end. And an end portion in the direction in which the propulsive force of the propulsive force generating member is formed, which includes a propulsive force generating source made of an elastic member made of a shape memory alloy for pushing the piston toward the injection port side and a storage cylinder for accommodating the elastic member. Is provided with a connecting portion, and the storage cylinder is provided with an air hole for adjusting the temperature inside the storage cylinder. The elastic member reversibly expands and contracts due to a temperature change, and when expanded, the elastic force causes deformation. The piston is pushed out, and the injection agent accommodating member and the propulsion force generating member are integrated by connecting the connecting portions provided to the injection agent accommodating member and the propulsion force generating member, respectively. Injector, characterized by and used.