Pipe roof pipe jacking structure convenient to use

Abstract

The utility model provides a pipe roof pipe jacking structure convenient to use, which relates to the technical field of underground engineering construction and comprises a pipe roof steel pipe jacking body and supporting steel. A quick coupling assembly; the quick connecting assembly comprises a reverse buckling barb fixedly connected to one end of the outer side of the pipe roofing steel jacking pipe body, the other end of the pipe roofing steel jacking pipe body is fixedly connected with a forward buckling clamping hook, and anti-skid teeth are evenly distributed on the outer surface of the reverse buckling barb and the outer surface of the forward buckling clamping hook. An expansion pressurization assembly; the expansion pressurizing assembly comprises an expansion air bag fixedly connected to the inner side of the right-hand buckle clamping hook. According to the design, the stability of a connecting part is enhanced, the phenomenon that the connecting part is loosened or slides due to long-term use and external force is prevented, soil and gravel in a soil layer enter a buckling part is reduced, and pressure can be better borne and dispersed; the arch-shaped structure can distribute stress on the whole connecting part more uniformly, so that the problem of fracture caused by overlarge local stress is reduced.

Description

Technical Field

[0001] This utility model relates to the field of underground engineering construction technology, and in particular to a pipe curtain jacking structure that is easy to use. Background Technology

[0002] Pipe jacking is a special structural form used in underground engineering. It involves using a pipe jacking machine to push a series of steel pipes into the soil layer according to design requirements, forming a pipe jacking system. These steel pipes are closely arranged, usually in an arch shape or other stable spatial layout, effectively resisting the pressure from the soil and rock layers above.

[0003] A search of Chinese Patent Publication No. CN217129551U reveals a support device between steel jacking pipes in a tunnel duct, relating to the field of underground engineering construction technology. The device includes two main steel jacking pipe bodies. Each main body has two male and two female locking angle steel buckles on its outer walls, connected by a snap-fit ​​mechanism. Two connecting steel plates are fixedly connected between the two main steel jacking pipe bodies. This invention achieves better stability by seamlessly welding two connecting steel plates between the two main steel jacking pipe bodies, forming an integral structure. This effectively reduces the horizontal displacement of the main steel jacking pipe bodies during duct construction, improves the overall integrity between the main bodies, and enhances the construction efficiency and accuracy of tunnel duct construction.

[0004] However, in actual use, when the pipe jacking machine advances into the soil layer, the soil and gravel in the soil layer will be squeezed to the fastening part of the L-shaped angle steel. Due to the structural characteristics of the L-shaped angle steel, there are certain gaps and grooves at its fastening part. These gaps and grooves become places for soil and gravel to accumulate. As the jacking operation continues, the accumulated soil and gravel will gradually increase, which may eventually lead to jamming at the fastening part of the L-shaped angle steel.

[0005] Therefore, this utility model provides a pipe curtain top pipe structure that is easy to use. Utility Model Content

[0006] The purpose of this invention is to overcome the shortcomings of the existing technology and provide a convenient pipe curtain top pipe structure.

[0007] To achieve the above objectives, the present invention adopts the following technical solution: a pipe curtain jacking structure that is easy to use, comprising a pipe curtain steel jacking pipe body and supporting steel;

[0008] Quick-connect assembly; the quick-connect assembly includes a reverse hook fixedly connected to one end of the outer side of the pipe curtain steel jacking pipe body, and a positive hook fixedly connected to the other end of the pipe curtain steel jacking pipe body, with anti-slip teeth evenly distributed on the outer surfaces of the reverse hook and the positive hook.

[0009] An expansion and pressurization assembly; the expansion and pressurization assembly includes an expansion airbag fixedly connected to the inside of the positive buckle hook, and an inlet and outlet air pipe fixedly connected to one outer end of the expansion airbag;

[0010] When the inflatable airbag is inflated, it comes into contact with the anti-slip teeth of the reverse hook and the forward hook.

[0011] In a preferred embodiment, the outer surface of the inflatable airbag after inflation contacts the gap between the anti-slip teeth of the adjacent reverse hook, and the outer side of the inflatable airbag after inflation abuts against the side of the teeth of the reverse hook and the root of the teeth of the forward hook.

[0012] In a preferred embodiment, the anti-slip teeth are designed with opposite inclination directions on the reverse hook and the forward hook. The inclination direction of the reverse hook teeth forms an acute angle with the axial direction of the pipe curtain steel jacking pipe body, while the inclination direction of the forward hook teeth forms an obtuse angle with the axial direction.

[0013] In a preferred embodiment, the ratio of the tooth height to the tooth pitch of the anti-slip tooth is 1:1.5 and the tooth top surface is a plane.

[0014] In a preferred embodiment, the axial projection contours of the reverse hook and the forward hook are complementary.

[0015] In a preferred embodiment, the pipe curtain steel jacking pipe body is arranged in a circumferential array on the outside of the supporting steel.

[0016] Compared with the prior art, the advantages and positive effects of this utility model are as follows:

[0017] This invention features a reverse hook with teeth that form an acute angle with the axial direction of the steel jacking pipe body, and a forward hook with teeth that form an obtuse angle with the axial direction. Furthermore, by inflating the air bladder, its outer surface contacts the gap between the anti-slip teeth, providing additional tightening force and further ensuring the connection's strength. This design enhances the stability of the connection, preventing loosening or slippage due to long-term use and external forces. It also reduces the entry of soil and gravel into the connection area and better withstands and disperses pressure. Compared to a rectangular connection design, the arched structure distributes stress more evenly across the entire connection, reducing the risk of breakage due to excessive local stress. Attached Figure Description

[0018] Figure 1 is a schematic diagram of the pipe snap hook structure of a pipe curtain top pipe structure that is easy to use according to this utility model;

[0019] Figure 2 is an enlarged view of point A in Figure 1;

[0020] Figure 3 is a schematic diagram of a quick connection assembly structure for a convenient pipe curtain roof structure provided by this utility model;

[0021] Figure 4 is a three-dimensional structural diagram of a convenient pipe curtain jacking structure provided by this utility model;

[0022] Figure 5 is a schematic diagram of the main body structure of a pipe curtain steel jacking pipe structure that is easy to use according to this utility model.

[0023] Legend:

[0024] 1. Steel jacking pipe body for pipe curtain;

[0025] 2. Quick-connect assembly; 21. Reverse hook; 22. Front hook; 23. Anti-slip teeth;

[0026] 3. Inflation and pressurization assembly; 31. Inflation airbag; 32. Inlet and outlet air pipes;

[0027] 4. Supporting steel. Detailed Implementation

[0028] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0029] As shown in Figure 1 and Figure 4 As shown, this embodiment provides a technical solution: a user-friendly pipe curtain jacking structure, including a pipe curtain steel jacking body 1 and supporting steel 4, wherein the pipe curtain steel jacking body 1 is arranged in a circular array on the outer side of the supporting steel 4;

[0030] The pipe curtain steel jacking body 1 is a component of the entire connection structure. It is arranged in a circular array on the outside of the supporting steel 4 to form a ring-shaped pipe curtain structure. The supporting steel 4 is located on the inside of the pipe curtain steel jacking body 1, providing additional support and stability to ensure that the entire structure will not deform or collapse when under stress.

[0031] As shown in Figure 1- Figure 5As shown, quick-connect component 2 includes a reverse hook 21 fixedly connected to one end of the outer side of the pipe curtain steel jacking pipe body 1, and a positive hook 22 fixedly connected to the other end of the pipe curtain steel jacking pipe body 1. The axial projection contours of the reverse hook 21 and the positive hook 22 are complementary. Anti-slip teeth 23 are evenly distributed on the outer surfaces of the reverse hook 21 and the positive hook 22. The anti-slip teeth 23 are designed with opposite inclination directions on the reverse hook 21 and the positive hook 22. The inclination direction of the teeth of the reverse hook 21 forms an acute angle with the axial direction of the pipe curtain steel jacking pipe body 1, and the inclination direction of the teeth of the positive hook 22 forms an obtuse angle with the axial direction. The ratio of tooth height to tooth pitch of the anti-slip teeth 23 is 1:1.5 and the tooth top surface is flat.

[0032] The reverse hook 21 is a component of the quick-connect assembly 2. It works in conjunction with the forward hook 22 to achieve a quick connection between the steel jacking pipe bodies 1 and the pipe curtain. The design of the reverse hook 21 makes the connection process more convenient, and its special structure prevents the connection from loosening or falling off during use. The forward hook 22, in conjunction with the reverse hook 21, achieves a quick connection between the steel jacking pipe bodies 1 and the pipe curtain. The design of the forward hook 22 makes the connection process more convenient, and its special structure prevents the connection from loosening or falling off during use. Anti-slip teeth 23 are distributed on the outer surface of the forward hook 22. These teeth increase the friction of the connection, preventing slippage or loosening due to external forces. The ratio of the tooth height to the tooth pitch of the anti-slip teeth 23 is one, and the tooth top surface is flat. This design further improves the anti-slip effect and ensures the stability of the connection. The anti-slip teeth 23 are provided on the reverse hook 21 and the forward hook 22. The outer surface increases the friction of the connection parts to prevent slippage or loosening caused by external forces. The ratio of tooth height to tooth pitch of the anti-slip teeth 23 is 1:1.5, and the tooth top surface is flat. This design further improves the anti-slip effect and ensures the stability of the connection. The anti-slip teeth 23 have opposite inclination directions on the reverse hooks 21 and the forward hooks 22. This design can better increase the friction and prevent the connection parts from slipping. The inclination direction of the teeth of the reverse hooks 21 forms an acute angle with the axial direction of the pipe curtain steel jacking pipe body 1, and the inclination direction of the teeth of the forward hooks 22 forms an obtuse angle with the axial direction. This design further improves the anti-slip effect.

[0033] As shown in Figure 1- Figure 3 As shown, the expansion and pressurization assembly 3 includes an expansion airbag 31 fixedly connected to the inside of the positive buckle hook 22, and an inlet and outlet air pipe 32 fixedly connected to one end of the outer side of the expansion airbag 31.

[0034] When the inflatable airbag 31 is inflated, it contacts the anti-slip teeth 23 of the reverse hook 21 and the forward hook 22. The outer surface shape of the inflated airbag 31 contacts the gap of the anti-slip teeth 23 of the adjacent reverse hook 21. The outer side of the inflated airbag 31 abuts against the side of the teeth of the reverse hook 21 and the root of the teeth of the forward hook 22.

[0035] The inflatable airbag 31 is the core component of the inflation and pressurization assembly 3. It is fixedly connected to the inside of the positive snap hook 22. Its main function is to expand after inflation and contact the anti-slip teeth 23 of the reverse snap hook 21 and the positive snap hook 22 to provide additional support and anti-slip effect. The air inlet and outlet pipe 32 is the channel connecting the inflatable airbag 31 and the external inflation device. Its main function is to control the inflation and deflation of the inflatable airbag 31 to expand it to the required extent, thereby providing additional support and anti-slip effect. When the inflatable airbag 31 is inflated, its outer surface contacts the anti-slip teeth 23 of the reverse snap hook 21, further enhancing the stability and anti-slip effect of the connection part.

[0036] Working principle:

[0037] As shown in Figures 1-5:

[0038] In use: First, the reverse hook 21 in the quick-connect assembly 2 is fixedly connected to one end of the outer side of the pipe curtain steel jacking pipe body 1, and the forward hook 22 is fixedly connected to the other end of the pipe curtain steel jacking pipe body 1. The reverse hook 21 and the forward hook 22 cooperate with each other to achieve a quick connection between the pipe curtain steel jacking pipe body 1. The outer surfaces of the reverse hook 21 and the forward hook 22 are evenly distributed with anti-slip teeth 23. The design of these teeth can increase the friction of the connection part and prevent slippage or loosening caused by external force. The anti-slip teeth 23 are inclined in opposite directions on the reverse hook 21 and the forward hook 22. The inclined direction of the teeth of the reverse hook 21 forms an acute angle with the axial direction of the pipe curtain steel jacking pipe body 1, and the inclined direction of the teeth of the forward hook 22 forms an obtuse angle with the axial direction, which improves anti-slip and ensures the stability of the connection. Then, when it is necessary to enhance the stability and anti-slip effect of the connection, the inflatable airbag 31 is inflated through the air inlet / outlet pipe 32. When the inflatable airbag 31 is inflated, its outer surface contacts the anti-slip teeth 23 of the reverse hook 21 and the forward hook 22, further enhancing the tightness and stability of the connection. The shape of the outer surface of the inflated airbag 31 contacts the gap of the anti-slip teeth 23 of the adjacent reverse hook 21, and the outer side of the inflated airbag 31 abuts against the side of the teeth of the reverse hook 21 and the root of the teeth of the forward hook 22, thereby providing additional support and anti-slip effect.

[0039] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model in any other way. Any person skilled in the art may make changes or modifications to the above-disclosed technical content to create equivalent embodiments for application in other fields. However, any simple modifications, equivalent changes, and modifications made to the above embodiments based on the technical essence of the present utility model without departing from the technical solution of the present utility model shall still fall within the protection scope of the technical solution of the present utility model.

Claims

1. A user-friendly pipe curtain jacking structure, comprising a pipe curtain steel jacking body (1) and supporting steel (4), characterized in that: Quick connection assembly (2); The quick connection assembly (2) includes a reverse hook (21) fixedly connected to one end of the outer side of the pipe curtain steel jacking pipe body (1), and a positive hook (22) fixedly connected to the other end of the pipe curtain steel jacking pipe body (1). The outer surfaces of the reverse hook (21) and the positive hook (22) are evenly distributed with anti-slip teeth (23). Inflation and pressurization assembly (3); The inflation and pressurization assembly (3) includes an inflatable airbag (31) fixedly connected to the inside of the positive buckle hook (22), and an inlet and outlet air pipe (32) is fixedly connected to one side of the inflatable airbag (31). When the inflatable airbag (31) is inflated, it comes into contact with the anti-slip teeth (23) of the reverse hook (21) and the forward hook (22).

2. A pipe jacking structure of a tube roof for easy use according to claim 1, characterized in that: The outer surface of the inflatable airbag (31) after inflation is in contact with the gap between the anti-slip teeth (23) of the adjacent reverse hook (21), and the outer side of the inflatable airbag (31) after inflation abuts against the tooth side of the reverse hook (21) and the root of the tooth of the forward hook (22).

3. A pipe jacking structure of a pipe curtain for easy use according to claim 1, characterized in that: The anti-slip teeth (23) are designed with opposite inclination directions on the reverse hook (21) and the forward hook (22). The inclination direction of the teeth of the reverse hook (21) forms an acute angle with the axial direction of the pipe curtain steel jacking pipe body (1), and the inclination direction of the teeth of the forward hook (22) forms an obtuse angle with the axial direction.

4. The easy-to-use pipe curtain jacking structure according to claim 1, characterized in that: The anti-slip tooth (23) has a tooth height to tooth pitch ratio of 1:1.5 and a tooth top surface that is flat.

5. A pipe jacking structure of a pipe curtain for easy use according to claim 1, characterized in that: The axial projection profiles of the reverse hook (21) and the forward hook (22) are complementary.

6. The easy-to-use pipe curtain jacking structure according to claim 1, characterized in that: The main body (1) of the pipe curtain steel jacking pipe is arranged in a circular array on the outside of the supporting steel (4).

Images