Device for advance support of grouting and stopping valve of pipe shed

Abstract

The utility model belongs to the technical field of pipe shed grouting, and provides an advance support pipe shed grouting stop valve device which comprises a valve pipe and a positioning structure, the outer end of the valve pipe is closed, the inner end of the valve pipe is open, the inner end of the valve pipe is sleeved with a pipe shed pipe, and the outer end of the valve pipe is communicated with a grouting pipe and an exhaust pipe. The positioning structure comprises outer supporting arc plates, inner pressing arc plates and connecting rods, the outer supporting arc plates and the inner pressing arc plates are located inside and outside the grouting pipe correspondingly, the multiple outer supporting arc plates and the multiple inner pressing arc plates are annularly distributed at intervals, and the connecting rods penetrate through the pipe wall of the grouting pipe so that the connecting rods can be arranged between the inner pressing arc plates and the outer supporting arc plates which are opposite inside and outside. According to the utility model, the slurry pumping pipe and the grouting pipe on the valve pipe can be quickly fixed, so that a worker does not need to hold the slurry pumping pipe by hand for grouting for a long time, the labor intensity of the worker is effectively reduced, great convenience is provided for the worker, the use is very simple and convenient, and the labor cost is saved.

Description

Technical Field

[0001] This utility model belongs to the field of pipe roof grouting technology, specifically relating to a device for a pre-support pipe roof grouting stop valve. Background Technology

[0002] In the process of tunnel construction, pipe roof grouting reinforcement is an important auxiliary construction method that plays a significant role in preventing tunnel collapse, controlling surface subsidence, and suppressing stratum displacement.

[0003] Currently, during the grouting process of pipe roof, grout needs to be injected into the pipe roof through a grout stop valve. The traditional grouting method involves workers holding the grout pump pipe and inserting it into the grout inlet pipe of the grout stop valve to inject grout into the pipe roof. During this process, workers cannot let go to prevent the grout pump pipe from being pulled out of the grout inlet pipe of the grout stop valve. This grouting method requires workers to hold the grout pump pipe in a standing position for a long time, which is too labor-intensive and inconvenient. In addition, if there are a large number of pipe roofs and grouting is carried out simultaneously, it will greatly increase the labor cost if a worker is assigned to hold the grout pump pipe for each pipe roof.

[0004] Therefore, there is a need to provide an improved technical solution that addresses the shortcomings of the existing technology. Utility Model Content

[0005] The purpose of this utility model is to overcome the shortcomings of the prior art and provide a device for grouting and stopping valves for advanced support pipe sheds.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a device for a pre-support pipe shed grouting and grout-stopping valve, comprising: a valve pipe and a positioning structure, wherein the outer end of the valve pipe is closed and the inner end is open, the inner end of the valve pipe is sleeved in the pipe shed, and the outer end of the valve pipe is connected to a grouting pipe and an exhaust pipe; the positioning structure comprises: an outer supporting arc plate, an inner pressure arc plate and a connecting rod, wherein the outer supporting arc plate and the inner pressure arc plate are respectively located inside and outside the grouting pipe, and multiple outer supporting arc plates and inner pressure arc plates are distributed along a ring interval, and the connecting rod penetrates the pipe wall of the grouting pipe so that the connecting rod is positioned between the inner pressure arc plate and the outer supporting arc plate which are opposite to each other, and springs are provided between the outer supporting arc plate and the outer pipe wall of the grouting pipe and between the inner pressure arc plate and the inner pipe wall of the grouting pipe, and the springs are sleeved on the outside of the connecting rod.

[0007] Preferably, the valve tube has external threads on its exterior so that the valve tube is threadedly fitted with the pipe shed.

[0008] Preferably, a baffle extends radially from the outer end of the valve tube.

[0009] Preferably, the exhaust pipe and the grouting pipe are arranged vertically, and both the grouting pipe and the exhaust pipe are equipped with control valves.

[0010] Preferably, there is a gap between the outer support arc plate and the outer wall of the grouting pipe, and between the inner pressure arc plate and the inner pipe of the grouting pipe.

[0011] Preferably, a sliding sleeve is provided on the outside of the grouting pipe;

[0012] The sliding sleeve is conical.

[0013] Preferably, the tip of the sliding sleeve faces the gap between the outer support arc plate and the grouting pipe.

[0014] Preferably, the diameter of the thicker end of the sliding sleeve is greater than the distance between the outer support arc plate and the grouting pipe.

[0015] Preferably, a gap is reserved between the outer support arc plate and the grouting pipe for the insertion of the sliding sleeve.

[0016] Preferably, the outer surface of the outer support arc plate and the inner surface of the inner pressure arc plate are both rough surfaces.

[0017] Beneficial effects: This utility model can quickly fix the grouting pipe on the pump pipe and the grouting pipe on the valve pipe, so that the staff does not need to hold the pump pipe for a long time for grouting, effectively reducing the labor intensity of the staff, providing great convenience to the staff, and is very easy to use, saving labor costs. Attached Figure Description

[0018] The accompanying drawings, which form part of this application, are used to provide a further understanding of the present invention. The illustrative embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an undue limitation of the present invention. Wherein:

[0019] Figure 1 This is the front view of the present invention;

[0020] Figure 2 This is a schematic diagram of the overall design of this utility model;

[0021] Figure 3 This is a cross-sectional view of the present invention;

[0022] Figure 4 for Figure 3 Enlarged view of point A in the middle;

[0023] Figure 5 for Figure 1 Side view.

[0024] In the diagram: 1. Valve pipe; 2. Grouting pipe; 3. Exhaust pipe; 4. Outer support arc plate; 5. Inner pressure arc plate; 6. Connecting rod; 7. Spring; 8. Baffle; 9. Sliding sleeve. Detailed Implementation

[0025] The technical solutions in the embodiments of this utility model will be clearly and completely described below. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art are within the protection scope of this utility model.

[0026] In the description of this utility model, the terms "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," and "bottom," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this utility model and do not require that this utility model be constructed and operated in a specific orientation; therefore, they should not be construed as limitations on this utility model. The terms "connected" and "linked" used in this utility model should be interpreted broadly. For example, they can refer to a fixed connection or a detachable connection; they can refer to a direct connection or an indirect connection through intermediate components. Those skilled in the art can understand the specific meaning of the above terms according to the specific circumstances.

[0027] The present invention will now be described in detail with reference to the accompanying drawings and embodiments. It should be noted that, unless otherwise specified, the embodiments and features described herein can be combined with each other.

[0028] This embodiment aims to provide a device for grouting and stopping valves in pre-supported pipe sheds. Its main function is to effectively reduce the labor intensity of workers, provide great convenience to workers, and is very easy to use, thus saving labor costs.

[0029] like Figure 1-3As shown, it includes: a valve pipe 1 and a positioning structure. The outer end of the valve pipe 1 is closed, and the inner end is open. The valve pipe 1 has external threads to allow the inner end of the valve pipe 1 to be rotated and inserted into the grout inlet of the pipe roof pipe and fitted with its threads. The outer end of the valve pipe 1 is connected and welded to a grouting pipe 2 and an exhaust pipe 3, which are arranged vertically. Both the grouting pipe 2 and the exhaust pipe 3 are equipped with control valves. The control valve of the exhaust pipe 3 swings horizontally, while the control valve of the grouting pipe 2 swings vertically. The control valves of both have a wide range of movement, thus... They will not come into contact during operation and will not affect each other's work. By adjusting the control valve switch of the exhaust pipe 3, the trapped air in the pipe roof can be discharged to ensure the grouting effect and ensure the pipe roof grouting is dense. The outer end of the valve pipe 1 has a baffle 8 extending radially. The diameter of the baffle 8 is adapted to the outer diameter of the pipe roof. The baffle 8 enables the valve pipe 1 and the pipe roof to be installed quickly. At the same time, the rotation of the valve pipe 1 generates pressure between the baffle 8 and the end face of the pipe roof, which can enhance the stability of the connection between the valve pipe 1 and the pipe roof.

[0030] like Figure 1-5 As shown, the positioning structure includes: an outer supporting arc plate 4, an inner pressure arc plate 5, and a connecting rod 6. The outer supporting arc plate 4 and the inner pressure arc plate 5 are located inside and outside the grouting pipe 2, respectively, and there are four outer supporting arc plates 4 and four inner pressure arc plates 5, so that the outer supporting arc plates 4 and the inner pressure arc plates 5 are distributed along a ring-shaped interval. The connecting rod 6 penetrates the pipe wall of the grouting pipe 2, so that the connecting rod 6 is located between the inner pressure arc plate 5 and the outer supporting arc plate 4, which are opposite to each other. That is, the outer end of the connecting rod 6 is fixed to the inner plate surface of the outer supporting arc plate 4, and the inner end is fixed to the outer plate surface of the inner pressure arc plate 5. Multiple connecting rods 6 can be set between the supporting arc plates 4 to ensure stability between them; there are gaps between the outer supporting arc plate 4 and the outer wall of the grouting pipe 2, and between the inner pressure arc plate 5 and the inner pipe of the grouting pipe 2, so that springs 7 can be set in the two gaps respectively. The two springs 7 are respectively fitted on the inner and outer ends of the connecting rods 6. By setting the springs 7, the length of the connecting rods 6 inside and outside the grouting pipe 2 can be unified. At the same time, the outer supporting arc plate 4 and the inner pressure arc plate 5 can generate a reaction force when they are compressed, so as to use the reaction force to fix the large-diameter or small-diameter pump grouting pipe.

[0031] In a specific embodiment of this application, the gap between the outer support arc plate 4 and the inner pressure arc plate 5 and the inner and outer walls of the grouting pipe 2 is provided to allow for inward and outward movement of the outer support arc plate 4 and the inner pressure arc plate 5. When installing the grouting pipe, if the diameter of the grouting pipe is just larger than the outer diameter of the grouting pipe 2, the outer support arc plate 4 can be pressed inward, that is, pressed radially. Then, the grouting pipe is fitted over the four outer support arc plates 4. The reaction force of the spring 7 allows the outer support arc plate 4 to support the inner wall of the grouting pipe in the opposite direction to fix it to the grouting pipe 2. If the outer diameter of the grouting pipe is just smaller than the inner diameter of the grouting pipe 2, the inner pressure arc plate 5 can be opened outward, also radially. Then, the grouting pipe is fitted over the center of the four inner pressure arc plates 5. The reaction force of the spring 7 allows the inner pressure arc plate 5 to support the outer wall of the grouting pipe in the opposite direction to fix it to the grouting pipe 2. It should be noted that this method is only suitable for rigid pipes and not for flexible pipes.

[0032] like Figure 2-4 As shown, a sliding sleeve 9 is fitted around the outside of the grouting pipe 2. The sliding sleeve 9 can slide freely along the axial direction of the grouting pipe 2. The sliding sleeve 9 is conical, with its tip facing the gap between the outer support arc plate 4 and the grouting pipe 2. A gap is reserved between the outer support arc plate 4 and the grouting pipe 2 for the sliding sleeve 9 to be inserted. The diameter of the thick end of the sliding sleeve 9 is larger than the distance between the outer support arc plate 4 and the grouting pipe 2. Based on this, when the sliding sleeve 9 is slid to the left, its tip enters the gap first. As the sliding sleeve 9 gradually enters the gap, the four outer support arc plates 4 will open outward at the same time. Correspondingly, the four inner pressure arc plates 5 will also open outward at the same time, so that the small-diameter pump grout pipe can be inserted into the grouting pipe 2. This method provides great convenience for the workers. As for the outer support arc plate 4, since it is located outside the grouting pipe 2, it is more convenient to press than the inner pressure arc plate 5.

[0033] like Figure 2 As shown, the outer surface of the outer support arc plate 4 and the inner surface of the inner pressure arc plate 5 are both rough surfaces to ensure that the outer support arc plate 4 or the inner pressure arc plate 5 stably fixes the pump slurry pipe.

[0034] In actual use, first rotate the inner end of valve pipe 1 onto the pipe roof pipe, ensuring that baffle 8 fits tightly with the pipe roof pipe. Then, install the grouting pipe and injection pipe 2 together. If the diameter of the grouting pipe is large, press the outer support arc plate 4 and put the grouting pipe over the outer support arc plate 4. If the diameter of the grouting pipe is small, move the sliding sleeve 9 to the left to support the four inner pressure arc plates 5, and put the grouting pipe over the center of the four inner pressure arc plates 5. After fixing, the workers' hands can be freed.

[0035] This embodiment can quickly fix the grouting pipe to the grouting pipe 2 on the valve pipe 1, so that the staff does not need to hold the grouting pipe for a long time for grouting, effectively reducing the labor intensity of the staff, providing great convenience to the staff, and is very easy to use, saving labor costs. At the same time, it can also adapt to grouting pipes of different diameters within a certain range to enhance its flexibility and practicality.

[0036] It is understood that the above description is merely exemplary and the embodiments of this application do not limit the scope of the application.

[0037] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model shall be within the scope of protection of the pending claims of the present utility model.

Claims

1. A device for a pre-support pipe shed grouting stop valve, characterized in that, include: The valve pipe is closed at the outer end and open at the inner end. The inner end of the valve pipe is fitted inside the pipe shed pipe, and the outer end of the valve pipe is connected to a grouting pipe and an exhaust pipe. The positioning structure includes an outer supporting arc plate, an inner pressure arc plate, and a connecting rod. The outer supporting arc plate and the inner pressure arc plate are located inside and outside the grouting pipe, respectively, and multiple outer supporting arc plates and inner pressure arc plates are distributed at circumferential intervals. The connecting rod penetrates the pipe wall of the grouting pipe so that it is positioned between the inner pressure arc plate and the outer supporting arc plate, which are opposite to each other. Springs are provided between the outer supporting arc plate and the outer wall of the grouting pipe, and between the inner pressure arc plate and the inner wall of the grouting pipe. The springs are sleeved on the outside of the connecting rod.

2. The device for a pre-support pipe shed grouting stop valve according to claim 1, characterized in that, The valve tube has external threads on its exterior so that it can be threadedly fitted with the pipe shed.

3. The device for a pre-support pipe shed grouting stop valve according to claim 1, characterized in that, A baffle extends radially from the outer end of the valve tube.

4. The device for a pre-support pipe shed grouting stop valve according to claim 1, characterized in that, The exhaust pipe and the grouting pipe are arranged vertically, and both the grouting pipe and the exhaust pipe are equipped with control valves.

5. The device for a pre-support pipe shed grouting stop valve according to claim 1, characterized in that, There are gaps between the outer support arc plate and the outer wall of the grouting pipe, and between the inner pressure arc plate and the inner pipe of the grouting pipe.

6. The device for a pre-support pipe shed grouting stop valve according to claim 5, characterized in that, The grouting pipe is fitted with a sliding sleeve. The sliding sleeve is conical.

7. The device for a pre-support pipe shed grouting stop valve according to claim 6, characterized in that, The tip of the sliding sleeve faces the area between the outer support arc plate and the grouting pipe.

8. The device for a pre-support pipe shed grouting stop valve according to claim 7, characterized in that, The diameter of the thicker end of the sliding sleeve is greater than the distance between the outer support arc plate and the grouting pipe.

9. The device for a pre-support pipe shed grouting stop valve according to claim 8, characterized in that, An empty space is reserved between the outer support arc plate and the grouting pipe for the insertion of the sliding sleeve.

10. The device for a pre-support pipe shed grouting stop valve according to claim 1, characterized in that, Both the outer surface of the outer support arc plate and the inner surface of the inner pressure arc plate are rough surfaces.

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