Quick joint for grout injection

Abstract

Provides quick joints for grout injection. [Solution] The grout injection quick joint is for connecting between an injection steel pipe and an injection pipe, and comprises an injection pipe body 1, a power transmission pipe 2, an expansion ring 3, a stopper 4, a pressing part 5 and a flat bearing 6, the front and rear ends of the injection pipe body are used for corresponding communication with the injection steel pipe and the injection pipe, and the injection pipe body is fitted with a stopper, an expansion ring, a power transmission pipe, a flat bearing and a pressing part in that order from the front end, the stopper is for restricting the expansion ring from coming off the front end of the injection pipe body, and the pressing part is screwed to the injection pipe body so as to push the power transmission pipe to compress the expansion ring and push out the expansion ring to expand it. The power transmission pipe can be pushed to move along the axial direction of the injection pipe body more easily to make the connection between the injection steel pipe and the injection pipe easier.

Description

[Technical field]

[0001] The present utility model relates to the technical field of tunnel construction, in particular to a quick joint for grout injection. [Background technology]

[0002] Currently, the conventional method of grout injection is to install the injection steel pipe, weld the ball valve, connect the injection pipe sleeve through the connection port on the ball valve, and then perform grouting. This grout injection process is complicated and complex in terms of installation and processing procedures, and is not a standard process, so it is very likely to cause defects such as grout injection failure and grout leakage, which will bring about a large potential risk to safety and quality in the later stages of construction. Summary of the Invention [Problem to be solved by the invention]

[0003] In view of this, an object of the present invention is to provide a quick joint for grout injection that facilitates the grout injection work. [Means for solving the problem]

[0004] The grout injection quick joint of this utility model is for connecting between an injection steel pipe and an injection pipe, and comprises an injection pipe main body, a power transmission pipe, an expansion ring, a stopper, a pressing part and a flat bearing, the front and rear ends of the injection pipe main body are respectively used for communicating with the injection steel pipe and the injection pipe, and the injection pipe main body has, in order from the front end, a stopper, an expansion ring, a power transmission pipe, a flat bearing and a pressing part fitted thereon, the stopper is for restricting the expansion ring from coming off the front end of the injection pipe main body, and the pressing part is screwed into the injection pipe main body so as to push the power transmission pipe to compress the expansion ring and push out the expansion ring to expand it.

[0005] In this utility model, when butting, the tip of the injection pipe body is inserted into the injection steel pipe, the rear end of the injection pipe body is screwed to the connection nut of the injection pipe, and then the pressing part is rotated to push the power transmission pipe to move along the axial direction of the injection pipe body, and the expansion ring is compressed in cooperation with the stopper, and the expansion ring is further expanded and pressed against the inner wall of the injection steel pipe, making the grout injection work easier. In addition, the arrangement of the plane bearing allows the pressing part to more smoothly and easily push the power transmission pipe to move along the axial direction of the injection pipe body when rotating.

[0006] Preferably, the pressing part includes a pressing nut threadedly connected to the outside of the injection tube body, and a rod-shaped handle connected to the outside of the pressing nut, the axis of the handle being perpendicular to the axis of the injection tube body.

[0007] Preferably, two of the handles are provided, and the two handles are provided symmetrically on both sides of the pressure nut.

[0008] Preferably, a spacer ring is provided between the plane bearing and the pressing part, and a spacer ring is provided between the plane bearing and the power transmission pipe.

[0009] Preferably, the injection tube body is provided on its outer side with scale marks along the axial direction so as to facilitate adjustment of the distance by which the pressing part pushes and moves the power transmission tube.

[0010] Preferably, the expansion ring is a rubber snap ring.

[0011] Preferably, a spacer ring is provided between the expansion ring and the stopper, and a spacer ring is provided between the expansion ring and the power transmission tube.

[0012] Preferably, a plurality of expansion rings are fitted axially around the front portion of the injection tube body.

[0013] Preferably, a spacer ring is provided between each of the expansion rings.

[0014] Preferably, the stopper is a stop nut that is threadedly connected to the tip of the injection tube body. Effect of the Invention

[0015] Compared with the prior art, the grout injection quick joint of this utility model is convenient and quick to use, improves construction efficiency, ensures construction quality, and reduces construction costs, making it highly practicable.

[0016] For better understanding and implementation, the present invention will now be described in detail with reference to the drawings. [Brief description of the drawings]

[0017] [Figure 1] 1 is an overall configuration diagram of one embodiment of the present invention; DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0018] Orientation terms such as up, down, left, right, front, rear, front side, back side, top, bottom, etc. that may be mentioned or may be mentioned in this specification are defined with respect to the structure and are relative concepts. Therefore, they may change depending on the installation location and the usage conditions. Therefore, these terms and other directional terms should not be construed as limiting terms.

[0019] The embodiments described in the following illustrative examples are not intended to represent all embodiments consistent with this disclosure, but rather are merely examples of embodiments consistent with some aspects of this disclosure.

[0020] The terms used in this disclosure are only for describing particular embodiments and are not intended to limit the disclosure. As used in this disclosure, the singular forms "a," "the," and "said" include the plural forms unless the context clearly indicates otherwise. The term "and / or" as used herein should also be understood to mean including any possible combination of one or more of the associated items.

[0021] As shown in FIG. 1, the grout injection quick joint according to the present utility model is for connecting between an injection steel pipe and an injection pipe, and comprises an injection pipe body 1, a power transmission pipe 2, an expansion ring 3, a stopper 4, a pressing part 5 and a flat bearing 6. The front and rear ends of the injection pipe body 1 are used for corresponding communication with the injection steel pipe and the injection pipe, respectively. The injection pipe body 1 is fitted with a stopper 4, an expansion ring 3, a power transmission pipe 2, a flat bearing 6 and a pressing part 5 in that order from the front end. The stopper 4 is for restricting the expansion ring 3 from coming off the front end of the injection pipe body 1, and the pressing part 5 is screwed to the injection pipe body 1 so as to push the power transmission pipe 2 to compress the expansion ring 3 and push out the expansion ring 3 to expand it.

[0022] In this utility model, when butting, the tip of the injection pipe body 1 is inserted into the injection steel pipe, and the rear end of the injection pipe body 1 is screwed into the connection nut of the injection pipe, and then the pressing part 5 is rotated to push the power transmission pipe 2 so as to move along the axial direction of the injection pipe body 1, compressing the expansion ring 3 in cooperation with the stopper 4, and after the expansion ring 3 is expanded, it is pressed against the inner wall of the injection steel pipe, making the grout injection work easier. Also, the arrangement of the flat bearing 6 allows the pressing part 5 to more smoothly and easily push the power transmission pipe 2 so as to move along the axial direction of the injection pipe body 1 when rotating.

[0023] The pressing part 5 includes a pressing nut that is screwed onto the outside of the injection tube main body 1, and a rod-shaped handle 52 that is connected to the outside of the pressing nut 51, and the axis of the handle 52 is perpendicular to the axis of the injection tube main body 1, making it easier to force the pressing nut 51 to rotate so as to further compress the expansion ring 3.

[0024] Preferably, two handles 52 are provided, and the two handles 52 are provided symmetrically on both sides of the press nut 51, so that the press nut 51 can be easily rotated.

[0025] In this embodiment, a spacer ring 7 is provided between the planar bearing 6 and the pressing part 5, and a spacer ring 7 is provided between the planar bearing 6 and the power transmission pipe 2, thereby improving the transmission of axial force between the pressing part 5 and the power transmission pipe 2.

[0026] In this embodiment, a scale line 11 is provided along the axial direction on the outside of the injection pipe body 1, so as to facilitate adjustment of the distance that the pressing part 5 pushes and moves the power transmission pipe 2. Furthermore, under different injection pressures, the amount of extrusion to the expansion ring can be easily controlled, and the expansion amount of the expansion ring can be controlled to ensure smooth grout injection.

[0027] In this embodiment, the expansion ring 3 is a rubber snap ring, and therefore when the rubber snap ring is pressed, it expands outward, thereby ensuring airtightness between the rubber snap ring and the injection steel pipe.

[0028] In this embodiment, a spacer ring 7 is provided between the expansion ring 3 and the stopper 4, and a spacer ring 7 is provided between the expansion ring 3 and the power transmission pipe 2, which further serves to protect the expansion ring 3.

[0029] In this embodiment, a number of expansion rings 3 are fitted axially onto the front part of the injection pipe body 1, thereby improving the stability and tightness of the connection with the injection steel pipe.

[0030] Preferably, a spacer ring 7 is provided between each of the multiple expansion rings 3, which makes the axial force transmitted between the multiple expansion rings 3 more uniform, makes the expansion of the expansion rings 3 more uniform, and also serves to protect the expansion rings 3.

[0031] In this embodiment, the stopper 4 is a stop nut that is screwed onto the tip of the injection tube body 1, thus facilitating the use of a quick joint for quick injection.

[0032] In this embodiment, the spacer ring 7 is a metal gasket, and therefore has a good spacer effect.

[0033] In addition, the outer diameters of the spacer ring 7, the stopper 4 and the power transmission pipe 2 in this application are each smaller than the outer diameter of the expansion ring 3 so as not to affect the seal connection between the expansion ring 3 and the injection steel pipe.

[0034] As described above, compared with the prior art, the grout injection quick joint of this utility model is convenient and quick to use, improves construction efficiency, ensures construction quality, and reduces construction costs, making it highly practicable.

[0035] The above examples only represent some embodiments of the present utility model, and although the description is more specific and detailed, it cannot be understood as a limitation on the scope of the utility model registration. However, those skilled in the art can make some modifications and improvements without departing from the concept of the present utility model, which are included in the protection scope of the present utility model. [Explanation of symbols]

[0036] 1 injection tube body, 11 scale line, 2 power transmission tube, 3 expansion ring, 4 stopper, 5 pressing part, 51 pressing nut, 52 handle, 6 flat bearing, 7 spacer ring.

Claims

1. A grout injection quick joint for connecting between an injection steel pipe and an injection pipe, The pump is provided with an injection pipe body, a power transmission pipe, an expansion ring, a stopper, a pressing part and a flat bearing. The front end and rear end of the injection pipe body are used to communicate with the injection steel pipe and the injection pipe, respectively; The injection pipe body is fitted with a stopper, an expansion ring, a power transmission pipe, a plane bearing, and a pressing part in this order from the front end, The stopper is for restricting the expansion ring from coming off the front end of the injection tube body, The pressing part is screwed to the injection pipe body so as to press the power transmission pipe to compress the expansion ring and push out the expansion ring to expand it. A quick joint for grout injection, characterized in that

2. The pressing part includes a pressing nut screwed to the outside of the injection pipe body, and a rod-shaped handle connected to the outside of the pressing nut, and the axis of the handle is perpendicular to the axis of the injection pipe body.

2. The grout injection quick joint according to claim 1 .

3. The two handles are provided symmetrically on both sides of the pressure nut.

3. The grout injection quick joint according to claim 2.

4. A spacer ring is provided between the plane bearing and the pressing part, and a spacer ring is provided between the plane bearing and the power transmission pipe.

2. The grout injection quick joint according to claim 1 .

5. The outer side of the injection tube body is provided with scale marks along the axial direction so as to facilitate adjustment of the distance by which the pressing part pushes and moves the power transmission tube.

2. The grout injection quick joint according to claim 1 .

6. The expansion ring is a rubber snap ring.

2. The grout injection quick joint according to claim 1 .

7. a spacer ring is provided between the expansion ring and the stopper, and a spacer ring is provided between the expansion ring and the power transmission pipe; 2. The grout injection quick joint according to claim 1 .

8. A plurality of expansion rings are fitted on the front part of the injection pipe body along the axial direction.

2. The grout injection quick joint according to claim 1 .

9. A spacer ring is provided between each of the expansion rings.

9. The grout injection quick joint according to claim 8.

10. The stopper is a stop nut that is threadedly connected to the tip of the injection tube body.

2. The grout injection quick joint according to claim 1 .

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