Pre-buried grouting pipe adjustment mechanism, trolley, installation method and grouting pipe adjustment method

Abstract

The present invention discloses a pre-embedded grouting pipe adjustment mechanism, a trolley, an installation method and a pre-embedded grouting pipe adjustment method, comprising a sliding ring and a sealing template, wherein the sealing template blocks the middle hole of the sliding ring, and the sealing template is provided with a through hole for installing the pre-embedded grouting pipe, the center of the through hole is located outside the center of the sliding ring, and the sliding ring is provided with a plurality of arc-shaped sliding grooves, and the arc-shaped sliding grooves are located on the same circumference. The sliding ring can rotate relatively, and the arc-shaped sliding groove guides the rotation of the sliding ring. When the sliding ring rotates, the position of the through hole can be adjusted, and then the position of the pre-embedded grouting pipe can be adjusted. Compared with the prior art, the present invention has a simple structure, convenient construction of the pre-embedded grouting pipe, avoids blind opening of the trolley template, effectively guarantees the appearance quality of the concrete lining, and the pre-embedded grouting pipe is recyclable, saving engineering costs.

Description

Technical Field

[0001] The invention relates to a reserved backfill grouting hole for concrete lining of a tunnel project, in particular to a pre-buried grouting pipe adjustment mechanism, a pre-buried grouting pipe adjustment trolley, an installation method of the pre-buried grouting pipe adjustment mechanism, and a pre-buried grouting pipe adjustment method. Background Art

[0002] The concrete lining of a tunnel project is designed based on the purpose of the tunnel and the operating conditions after the tunnel is built. It is the main load-bearing structure of the tunnel, and its quality has a great impact on the long-term stable operation of the tunnel.

[0003] The concrete lining of existing tunnels is mostly constructed with an integral steel formwork trolley. In order to facilitate the backfill grouting of the gaps and holes between the concrete and the surrounding rock after the concrete lining, grouting pipes are usually pre-buried when the steel bars are tied for subsequent backfill grouting. Although this method can avoid drilling backfill grouting holes on the lined concrete, saving construction time and engineering costs; it still has the disadvantage that it is difficult to find the pre-buried pipe opening after the concrete pouring and demolding, and the concrete surface is often damaged due to the search for the pipe opening. Summary of the invention

[0004] The purpose of the present invention is to provide a pre-buried grouting pipe adjustment mechanism, which can adjust the position of the grouting pipe by rotating a sliding ring.

[0005] A pre-buried grouting pipe adjustment trolley is also provided, and the position of the pre-buried grouting pipe can be adjusted by rotating the sliding ring relative to the trolley body.

[0006] Furthermore, a method for installing a pre-buried grouting pipe adjustment mechanism is provided, which is easy to install and convenient for construction workers to operate.

[0007] Finally, a method for adjusting the pre-buried grouting pipe is provided, which can rotate the ring before and during the grouting process to adjust the position of the grouting pipe.

[0008] The solution to the technical problem of the present invention is: a pre-buried grouting pipe adjustment mechanism, including a sliding ring and a sealing template, the sealing template blocks the middle hole of the sliding ring, the sealing template is provided with a through hole for installing the pre-buried grouting pipe, the center of the through hole is located outside the center of the sliding ring, and the sliding ring is provided with a plurality of arc-shaped sliding grooves, and the arc-shaped sliding grooves are located on the same circumference.

[0009] The above-mentioned pre-buried grouting pipe adjustment mechanism has at least the following beneficial effects: the sliding ring can rotate relatively, the arc-shaped sliding groove guides the rotation of the sliding ring, and when the sliding ring rotates, the position of the through hole can be adjusted, thereby adjusting the position of the pre-buried grouting pipe. Compared with the prior art, the present invention has a simple structure, is convenient for construction personnel to carry out the construction of the pre-buried grouting pipe, avoids blind opening of the trolley template, effectively ensures the appearance quality of the concrete lining, and the pre-buried grouting pipe can be recycled, saving engineering costs.

[0010] As a further improvement of the above technical solution, the diameter of the sealing template is larger than the inner diameter of the middle hole of the sliding ring, and the sealing template is welded to the sliding ring.

[0011] As a further improvement of the above technical solution, it also includes an orifice cap for fixing the pre-buried grouting pipe, and the orifice cap is welded on the through hole.

[0012] As a further improvement of the above technical solution, the central angle corresponding to the arc-shaped sliding groove is 70 to 80°.

[0013] A pre-buried grouting pipe adjustment trolley comprises a trolley body and a pre-buried grouting pipe adjustment mechanism. The trolley body is provided with a plurality of positioning columns. A sliding ring is installed on the positioning columns through an arc-shaped sliding groove, and one arc-shaped sliding groove corresponds to one positioning column.

[0014] The above-mentioned pre-buried grouting pipe adjustment trolley has at least the following beneficial effects: the sliding ring can rotate relatively, the arc-shaped sliding groove and the positioning column guide the rotation of the sliding ring, and when the sliding ring rotates, the position of the through hole can be adjusted, thereby adjusting the position of the pre-buried grouting pipe. Compared with the prior art, the present invention has a simple structure, which is convenient for construction personnel to install the pre-buried grouting pipe on the trolley template, avoiding blind opening of the trolley template.

[0015] As a further improvement of the above technical solution, one end of the positioning column is provided with a threaded end, and after the sliding ring is installed on the positioning column, the sliding ring is fixed by screwing a nut into the threaded end.

[0016] A method for installing a pre-buried grouting pipe adjustment mechanism comprises the following steps:

[0017] 1) Weld the positioning column to the template of the trolley body;

[0018] 2) Welding the sealing template with through holes onto the sliding ring;

[0019] 3) Install the sliding ring on the trolley body through the arc-shaped sliding groove and the positioning column, and tighten the nut;

[0020] 4) Weld the orifice cap into the through hole and insert the embedded grouting pipe into the orifice cap.

[0021] The installation method of the above-mentioned pre-buried grouting pipe adjustment mechanism has at least the following beneficial effects: it is easy to install and convenient for construction personnel to operate.

[0022] As a further improvement of the above technical solution, in step 1), a first hole is opened on the template of the trolley body, and the diameter of the first hole is larger than the diameter of the sealing template.

[0023] As a further improvement of the above technical solution, one end of the pre-buried grouting pipe is conical, and the other end of the pre-buried grouting pipe is circular; the circular end of the pre-buried grouting pipe is connected and fixed to the orifice cap by a screw thread, and the lining concrete is recovered after final setting.

[0024] A method for adjusting a pre-buried grouting pipe comprises rotating a sliding ring with an orifice cap, and rotating an arc-shaped sliding groove along the guide of a positioning column. The orifice cap moves along the circumference thereof and adjusts its position, thereby completing the adjustment of the pre-buried grouting pipe. A nut is tightened on the positioning column to fix the sliding ring.

[0025] The above-mentioned pre-buried grouting pipe adjustment method has at least the following beneficial effects: when the pre-buried grouting pipe hits the structural steel bar, the sliding ring can be rotated to move it to a place where there is no structural steel bar for pre-buried. The method of the invention is simple to operate and convenient for construction personnel to operate. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following briefly describes the drawings required for use in the description of the embodiments. Obviously, the drawings described are only part of the embodiments of the present invention, not all of the embodiments, and those skilled in the art can also obtain other design solutions and drawings based on these drawings without creative work.

[0027] Figure 1 2 is a schematic structural diagram of a pre-buried grouting pipe adjustment mechanism according to an embodiment of the present invention;

[0028] Figure 2 yes Figure 1 Sectional view along AA direction;

[0029] Figure 3 yes Figure 1 Cross-sectional view along the BB direction;

[0030] Figure 4 2 is a schematic structural diagram of a pre-buried grouting pipe adjustment trolley according to an embodiment of the present invention;

[0031] Figure 5 It is a cross-sectional view of the pre-buried grouting pipe adjustment trolley in an embodiment of the present invention. DETAILED DESCRIPTION

[0032] This section will describe in detail the specific embodiments of the present invention. The preferred embodiments of the present invention are shown in the accompanying drawings. The purpose of the accompanying drawings is to supplement the description of the text part of the specification with graphics, so that people can intuitively and vividly understand each technical feature and the overall technical solution of the present invention, but it cannot be understood as a limitation on the scope of protection of the present invention.

[0033] In the description of the present invention, it should be understood that descriptions involving orientations, such as up, down, front, back, left, right, etc., and orientations or positional relationships indicated are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0034] In the description of the present invention, "several" means one or more, "more" means more than two, "greater than", "less than", "exceed" etc. are understood as not including the number itself, and "above", "below", "within" etc. are understood as including the number itself. If there is a description of "first" or "second", it is only used for the purpose of distinguishing the technical features, and cannot be understood as indicating or implying the relative importance or implicitly indicating the number of the indicated technical features or implicitly indicating the order of the indicated technical features.

[0035] In the description of the present invention, unless otherwise clearly defined, terms such as setting, installing, connecting, etc. should be understood in a broad sense, and technicians in the relevant technical field can reasonably determine the specific meanings of the above terms in the present invention based on the specific content of the technical solution.

[0036] Reference Figure 1 to Figure 3 A pre-buried grouting pipe adjustment mechanism comprises a sliding ring 10 and a sealing template 12, wherein the sealing template 12 blocks a middle hole 13 of the sliding ring 10, and the center of the sealing template 12 coincides with the center of the sliding ring 10. The sealing template 12 is provided with a through hole 14 for installing the pre-buried grouting pipe, and the center of the through hole 14 is located outside the center of the sliding ring 10, and the center of the through hole 14 does not coincide with the center of the sliding ring 10. The sliding ring 10 is provided with a plurality of arcuate sliding grooves 11, and the arcuate sliding grooves 11 are located on the same circumference, and the center of the circumference where the arcuate sliding grooves 11 are located coincides with the center of the sealing template 12, that is, the circumference where the arcuate sliding grooves 11 are located is concentric with the sealing template 12.

[0037] The sliding ring 10 can rotate relatively, and the arc-shaped sliding groove 11 guides the rotation of the sliding ring 10. When the sliding ring 10 rotates, the position of the through hole 14 can be adjusted, and then the position of the pre-buried grouting pipe can be adjusted. Compared with the prior art, the present invention has a simple structure, is convenient for construction workers to carry out the construction of the pre-buried grouting pipe, avoids blind opening of the trolley template, effectively ensures the appearance quality of the concrete lining, and the pre-buried grouting pipe can be recycled, saving engineering costs.

[0038] The diameter of the sealing template 12 is larger than the inner diameter of the middle hole 13 of the sliding ring 10 , and the sealing template 12 is welded to the sliding ring 10 .

[0039] It also includes an orifice cap 15 for fixing the pre-buried grouting pipe, and the orifice cap 15 is welded on the through hole 14. The orifice cap 15 fixes and installs the pre-buried grouting pipe. The pre-buried grouting pipe is a conical pre-buried grouting pipe, the length of the conical section is the same as the designed concrete lining thickness, and the length of the circular section is greater than the length of the orifice cap 15.

[0040] The central angle of the arc-shaped sliding groove 11 is 70-80°. Preferably, the central angle of the arc-shaped sliding groove 11 is 80°. The number of the arc-shaped sliding grooves 11 is 4. The central angle of the arc-shaped sliding groove 11 is the angular travel of the sliding ring 10.

[0041] Reference Figure 4-5 A pre-buried grouting pipe adjustment trolley includes a trolley body 16 and a pre-buried grouting pipe adjustment mechanism. The trolley body 16 is provided with a plurality of positioning columns 17. The sliding ring 10 is installed on the positioning columns 17 through an arc-shaped sliding groove 11. One arc-shaped sliding groove 11 corresponds to one positioning column 17. The positioning columns 17 are welded on the template of the trolley body 16. The circumference of the positioning columns 17 and the circumference of the arc-shaped sliding groove 11 are concentric circles.

[0042] The sliding ring 10 can rotate relatively, and the arc-shaped sliding groove 11 and the positioning column 17 guide the rotation of the sliding ring 10. When the sliding ring 10 rotates, the position of the through hole 14 can be adjusted, and then the position of the pre-buried grouting pipe can be adjusted. Compared with the prior art, the present invention has a simple structure, which is convenient for construction workers to install the pre-buried grouting pipe on the trolley template and avoid blind opening of the trolley template.

[0043] One end of the positioning column 17 is provided with a threaded end. After the sliding ring 10 is installed on the positioning column 17, a nut is screwed into the threaded end to fix the sliding ring 10.

[0044] A method for installing a pre-buried grouting pipe adjustment mechanism comprises the following steps:

[0045] 1) Weld the positioning column 17 to the template of the trolley body 16;

[0046] 2) manufacturing a sliding ring 10 with an arc-shaped sliding groove 11, wherein the central angle of the arc-shaped sliding groove 11 is 70 to 80 degrees, manufacturing a circular sealing template 12 with a through hole 14, and welding the sealing template 12 with the through hole 14 to the sliding ring 10, wherein the center of the sealing template 12 coincides with the center of the circle of the arc-shaped sliding groove 11;

[0047] 3) Install the sliding ring 10 on the trolley body 16 through the arc-shaped sliding groove 11 and the positioning column 17, and tighten the nut to fix the sliding ring 10 on the trolley body 16;

[0048] 4) Make an orifice cap 15 for fixing the pre-buried grouting pipe, weld the orifice cap 15 into the through hole 14, insert the pre-buried grouting pipe into the orifice cap 15, and when the pre-buried grouting pipe hits the structural steel bar, rotate the sliding ring 10 to move the pre-buried grouting pipe to an obstacle-free position.

[0049] During concrete lining, the pre-buried grouting pipes at the vault can be used as exhaust pipes, and the pre-buried grouting pipes at other locations must be blocked to prevent cement slurry from leaking out during the concrete lining process. After the concrete lining is completed and final setting, the pre-buried grouting pipes are recovered. After the concrete strength of the formed conical grouting hole reaches 50%, the concrete from the bottom of the hole to the rock surface is drilled through for subsequent backfill grouting.

[0050] In step 1), a first hole 18 is opened on the template of the trolley body 16, and the diameter of the first hole 18 is greater than the diameter of the sealing template 12. The thickness of the template of the trolley body 16 is equal to the thickness of the sealing template 12.

[0051] One end of the pre-buried grouting pipe is conical, and the other end is round. The round end of the pre-buried grouting pipe is connected and fixed to the orifice cap by screw thread. After the lining concrete is finally set, it is returned.

[0052] A method for adjusting a pre-buried grouting pipe comprises rotating a sliding ring 10 with an orifice cap, and rotating an arc-shaped sliding groove 11 along the guide of a positioning column 17. The orifice cap moves along the circumference thereof and adjusts its position, thereby completing the adjustment of the pre-buried grouting pipe. The nut is tightened on the positioning column 17 to fix the sliding ring 10.

[0053] When the pre-buried grouting pipe hits the structural steel bar, the sliding ring 10 can be rotated to move it to a position where no structural steel bar is arranged for pre-buried. The method of the invention is simple to operate and convenient for construction personnel to operate.

[0054] The above is a specific description of the preferred implementation mode of the present invention, but the invention is not limited to the embodiments. Those skilled in the art may make various equivalent modifications or substitutions without violating the spirit of the present invention. These equivalent modifications or substitutions are all included in the scope defined by the claims of this application.

Claims

1. A pre-buried grouting pipe adjustment mechanism, characterized in that: It includes a sliding ring and a sealing template, wherein the sealing template seals the middle hole of the sliding ring, the sealing template is provided with a through hole for installing a pre-buried grouting pipe, the center of the through hole is located outside the center of the sliding ring, and the sliding ring is provided with a plurality of arc-shaped sliding grooves, which are located on the same circumference.

2. The pre-buried grouting pipe adjustment mechanism according to claim 1 is characterized in that: The diameter of the sealing template is larger than the inner diameter of the middle hole of the sliding ring, and the sealing template is welded on the sliding ring.

3. The pre-buried grouting pipe adjustment mechanism according to claim 1 is characterized in that: It also includes an orifice cap for fixing the pre-buried grouting pipe, and the orifice cap is welded on the through hole.

4. The pre-buried grouting pipe adjustment mechanism according to claim 1 is characterized in that: The central angle corresponding to the arc-shaped sliding groove is 70-80°.

5. A pre-buried grouting pipe adjustment trolley, characterized in that: It comprises a trolley body and a pre-buried grouting pipe adjustment mechanism as claimed in any one of claims 1 to 4, wherein the trolley body is provided with a plurality of positioning columns, and a sliding ring is installed on the positioning columns through an arc-shaped sliding groove, and one arc-shaped sliding groove corresponds to one positioning column.

6. The pre-buried grouting pipe adjustment trolley according to claim 5, characterized in that: One end of the positioning column is provided with a threaded end. After the sliding ring is installed on the positioning column, a nut is screwed into the threaded end to fix the sliding ring.

7. A method for installing a pre-buried grouting pipe adjustment mechanism, characterized in that: The following steps are included: 1) Weld the positioning column to the template of the trolley body; 2) Welding the sealing template with through holes onto the sliding ring; 3) Install the sliding ring on the trolley body through the arc-shaped sliding groove and the positioning column, and tighten the nut; 4) Weld the orifice cap into the through hole and insert the embedded grouting pipe into the orifice cap.

8. The method for installing the pre-buried grouting pipe adjustment mechanism according to claim 7, characterized in that: In step 1), a first hole is opened on the template of the trolley body, and the diameter of the first hole is larger than the diameter of the sealing template.

9. The method for installing the pre-buried grouting pipe adjustment mechanism according to claim 7, characterized in that: One end of the pre-buried grouting pipe is conical, and the other end of the pre-buried grouting pipe is circular; the circular end of the pre-buried grouting pipe is connected and fixed to the orifice cap by a screw thread, and the lining concrete is recovered after final setting.

10. A method for adjusting a pre-buried grouting pipe, characterized in that: Rotate the sliding ring with the orifice cap, the arc-shaped sliding groove rotates along the guidance of the positioning column, the orifice cap moves along the circumference where it is located and adjusts its position, thereby completing the adjustment of the embedded grouting pipe, tighten the nut on the positioning column, and fix the sliding ring.

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