Tunnel construction pipeline quick connecting device

Abstract

The utility model provides a quick connecting device for tunnel construction pipelines, and belongs to the technical field of tunnel construction pipeline connection. The tunnel construction pipeline quick connecting device comprises a sleeve and pulling handles arranged on the two sides of the sleeve, an inner sleeve is arranged at the end, where a butt joint male head is inserted, of the sleeve, the outer side end of the inner sleeve is slidably sleeved with an outer sleeve, a clamping block used for clamping the butt joint male head is arranged on the inner sleeve, and the outer sleeve is provided with a clamping block used for clamping the butt joint male head. The outer sleeve is connected with a pull rod, the pull handle is provided with a pull block, and when the pull handle closes and locks the butt joint male head, the pull rod is pulled through the pull block, so that the outer sleeve pushes the clamping block to clamp and fix the butt joint male head. The pipeline butt joint device has the advantages of being high in pipeline butt joint stability, easy to operate and high in working efficiency.

Description

Technical Field

[0001] The utility model relates to the technical field of tunnel construction pipeline connection, in particular to a tunnel construction pipeline quick connection device. Background Art

[0002] During the tunnel construction process, the high-pressure air and high-pressure water transmission in the lining trolley operation section is basically transmitted to the heading direction through flange-welded reducers and rubber hoses. There are problems such as large wind pressure and water pressure losses during the transmission process and inconvenient construction connections. Therefore, pressure-resistant metal pipes and quick connectors are used for on-site operations to speed up on-site operation efficiency and improve on-site maintenance efficiency; through the splitter, the water and gas diversion is standardized to speed up the water and gas transmission efficiency. Furthermore, the docking installation of pipelines is a very important link in the overall pipeline laying process. In the process of connection using a lever quick connector, since only the inner end of the docking male head is locked by the lever, the docking male head is easy to shake in the docking female head under pressure and mechanical vibration, resulting in failure of the sealing performance, which will directly affect the connection stability of the pipeline in severe cases. Therefore, it is necessary to improve the existing lever quick connector.

[0003] For example, the patent with publication number CN214146979U provides a stainless steel cast quick connector with stable connection, including a male connector and a female connector, a lever for locking the male connector and the female connector is provided on the female connector, a slot is provided on the male connector to cooperate with the lever, a sleeve is provided on the male connector, a clamp is provided on the female connector to cooperate with the sleeve, and a first inclined surface is provided on the sleeve, and a second inclined surface is provided on the clamp to cooperate with the first inclined surface. Under the cooperation of the first inclined surface on the sleeve and the second inclined surface on the clamp, after the male connector is inserted into the female connector, the lever locks the male connector and the female connector, so that the first inclined surface and the second inclined surface are closely fitted together, which greatly increases the stability of the combination of the male connector and the female connector, and avoids shaking between the male connector and the female connector. Although this scheme improves the stability of the docking male connector to a certain extent, in the actual connection process, the sleeve and the clamp need to be operated separately using tools, which increases the workload of the pipeline docking, affects the work efficiency, and is not conducive to installation, disassembly and maintenance operations. Utility Model Content

[0004] In order to solve the above technical problems, the utility model provides a tunnel construction pipeline quick connection device.

[0005] The technical solution of the utility model is achieved in this way:

[0006] A quick connection device for tunnel construction pipelines comprises a sleeve and levers arranged on both sides of the sleeve, wherein the sleeve is provided with an inner sleeve at one end for inserting a male joint, an outer sleeve is slidably sleeved on the outer end of the inner sleeve, a clamping block for clamping the male joint is provided on the inner sleeve, a pull rod is connected to the outer sleeve, and a pull block is provided on the lever, and when the lever is closed and locked to the male joint, the pull rod is pulled by the pull block so that the outer sleeve pushes the clamping block to clamp and fix the male joint.

[0007] Furthermore, a through groove is formed at the outer end of the inner sleeve, the clamping block is arranged in the through groove, and a pressing block for entering into the through groove and pressing the clamping block is arranged on the inner wall surface of the outer sleeve.

[0008] Furthermore, the inner end of the clamping block is fixed on the inner end wall surface of the through groove, and the outer end of the clamping block is in a state of being inclined inwards.

[0009] Furthermore, the clamping block is slidably installed in the through groove in the radial direction of the inner sleeve, and the outer end of the outer surface of the clamping block is an inwardly inclined slope.

[0010] Furthermore, a flexible pad is provided on the inner side surface of the clamping block, and the inner side surface of the flexible pad is configured to be in an arc shape that matches the outer surface of the docking male head.

[0011] Furthermore, the end of the pull rod is rotatably connected to the outer sleeve, and the pressing block is arranged on a side of the handle away from the outer sleeve.

[0012] Furthermore, the pull rod is an elastic telescopic rod, and the pull rod is stretched when the lever is rotated to lock the male connector.

[0013] The utility model has the following beneficial effects:

[0014] By setting a clamping block to clamp and fix the butt joint male head, the clamping block cooperates with the lever to simultaneously fix the butt joint male head at two different positions in the length direction, which can effectively prevent the butt joint male head from shaking in the sleeve, and has the advantages of strong pipeline butt joint stability and effective guarantee of pipeline sealing performance. By setting a pull rod and a pull block, the function of the clamping block to clamp and fix the butt joint male head can be realized simultaneously in the process of rotating the lever to lock the butt joint male head in the sleeve, which greatly simplifies the operation of pipeline butt joint and improves work efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is an overall schematic diagram of the tunnel construction pipeline quick connection device of the utility model;

[0016] Figure 2 It is a cross-sectional view of an embodiment of the utility model in which the clamping block is fixedly installed in the through groove;

[0017] Figure 3 This utility model Figure 2 A magnified image of point A;

[0018] Figure 4 It is a cross-sectional view of an embodiment of the utility model in which the clamping block is slidably installed in the through groove;

[0019] Figure 5 This utility model Figure 4 The enlarged view of point B;

[0020] Figure 6 It is a schematic diagram of the pull block entering into the pull rod when the pull rod of the utility model is at an initial length.

[0021] In the figure: 1, sleeve; 2, lever; 3, inner sleeve; 4, outer sleeve; 5, clamping block; 6, pull rod; 7, pull block; 8, through groove; 9, pressure block; 10, flexible pad. DETAILED DESCRIPTION

[0022] The technical solutions in the embodiments of the present invention are described clearly and completely below. Obviously, the described embodiments are only a part of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0023] like Figures 1 to 6 As shown, this embodiment provides a quick connection device for tunnel construction pipelines, including a sleeve 1 and a lever 2 arranged on both sides of the sleeve 1, the sleeve 1 is provided with an inner sleeve 3 at one end for inserting a male joint, and an outer sleeve 4 is slidably sleeved on the outer end of the inner sleeve 3, and a clamping block 5 for clamping the male joint is provided on the inner sleeve 3, a pull rod 6 is connected to the outer sleeve 4, and a pull block 7 is provided on the lever 2. When the lever 2 is closed and locked to the male joint, the pull rod 6 is pulled by the pull block 7 so that the outer sleeve 4 pushes the clamping block 5 to clamp and fix the male joint.

[0024] When using the tunnel construction pipeline quick connection device, after inserting the docking male head into the sleeve 1, directly rotate the lever 2. While the lever 2 locks the docking male head, it drives the pull rod 6 to move through the pull block 7. The pull rod 6 pulls the outer sleeve 4 to the side of the sleeve 1. The outer sleeve 4 moves on the inner sleeve 3 and drives the clamping block 5 to clamp the docking male head. At this time, the clamping block 5 cooperates with the lever 2 to clamp and fix it at two different positions on the docking male head at the same time, which can prevent the docking male head from shaking and improve the stability and sealing of the pipeline docking. Moreover, this function is realized while the lever 2 is rotated to lock the docking male head, and the operation is simple.

[0025] A through groove 8 is provided at the outer end of the inner sleeve 3, and the clamping block 5 is arranged in the through groove 8. A pressing block 9 for entering the through groove 8 and pressing the clamping block 5 is provided on the inner wall surface of the outer sleeve 4. In the initial state, the pressing block 9 is located in the through groove 8, so that the outer sleeve 4 and the inner sleeve 3 are relatively fixed in the circumferential direction by the cooperation between the pressing block 9 and the through groove 8.

[0026] As one of the specific embodiments of the clamp block 5, the inner end of the clamp block 5 is fixed on the inner end wall of the through groove 8, and the outer end of the clamp block 5 is tilted inward. When the outer sleeve 4 moves toward the side of the sleeve 1, the pressing block 9 presses the clamp block 5 inward. At this time, the clamp block 5 bends inward and presses on the surface of the docking male connector to achieve the effect of clamping and fixing the docking male connector. This embodiment of the clamp block 5 has a simple structure and low cost.

[0027] As another specific embodiment of the clamp block 5, the clamp block 5 is radially slidably installed in the through groove 8 of the inner sleeve 3, and the outer end of the outer surface of the clamp block 5 is an inwardly inclined slope. When the outer sleeve 4 moves toward the side of the sleeve 1, the pressure block 9 presses the clamp block 5 inward so that the clamp block 5 as a whole moves radially inward, so that the clamp block 5 clamps and fixes the docking male head. This embodiment of the clamp block 5 allows the clamp block 5 to have a wider contact range when clamping and fixing the docking male head, especially with sufficient length in the axial direction, and has a better clamping and fixing effect.

[0028] Based on the above two specific embodiments of the clamp block 5, a flexible pad 10 is provided on the inner side of the clamp block 5, and the inner side of the flexible pad 10 is arranged in an arc shape that matches the outer surface of the docking male head. The flexible pad 10 can not only increase the friction and sealing with the docking male head, but also use its own deformation to switch the contact mode between the clamp block 5 and the docking male head from a rigid connection to a flexible connection, so that the processing error can be effectively avoided, and the deformation property of the flexible pad 10 is used to a certain extent, so that the clamping and fixing effect is better.

[0029] The end of the pull rod 6 is rotatably connected to the outer sleeve 4, and the pressure block 9 is arranged on the side of the lever 2 away from the outer sleeve 4. When the lever 2 is in the state of locking the male joint, the pressure block 9 is located on the inner side of the lever 2, so that an angle is formed between the lever 2 and the pull rod 6, and the angle is an acute angle, thereby utilizing the triangular support state to improve the stability of the lever 2 and the pull rod 6, thereby improving the stability of the pipeline joint.

[0030] The pull rod 6 is an elastic telescopic rod, and the pull rod 6 is stretched when the lever 2 is rotated to lock the docking male head. When the lever 2 is in the state of locking the docking male head, the pull rod 6 can lock the lever 2 and the pull rod 6 as a whole in this state by its own elastic force. The elastic force can prevent the lever 2 and the pull rod 6 from rotating to loosen the docking male head, further improving the stability of the stable pipe docking, and the operation is very simple.

[0031] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A quick connection device for tunnel construction pipelines, comprising a sleeve (1) and handles (2) arranged on both sides of the sleeve (1), characterized in that: The sleeve (1) is provided with an inner sleeve (3) at one end for inserting a male butt joint, and an outer sleeve (4) is slidably sleeved on the outer end of the inner sleeve (3). A clamping block (5) for clamping the male butt joint is provided on the inner sleeve (3). A pull rod (6) is connected to the outer sleeve (4). A pull block (7) is provided on the lever (2). When the lever (2) is closed and locked to the male butt joint, the pull rod (6) is pulled by the pull block (7), so that the outer sleeve (4) pushes the clamping block (5) to clamp and fix the male butt joint.

2. A tunnel construction pipeline quick connection device according to claim 1, characterized in that: The outer end of the inner sleeve (3) is provided with a through groove (8), the clamping block (5) is arranged in the through groove (8), and the inner wall surface of the outer sleeve (4) is provided with a pressing block (9) for entering the through groove (8) and pressing the clamping block (5).

3. A tunnel construction pipeline quick connection device according to claim 2, characterized in that: The inner end of the clamping block (5) is fixed on the inner end wall surface of the through groove (8), and the outer end of the clamping block (5) is in a state of being inclined inwards.

4. A tunnel construction pipeline quick connection device according to claim 2, characterized in that: The clamping block (5) is radially slidably installed in the through groove (8) of the inner sleeve (3), and the outer end of the outer surface of the clamping block (5) is an inwardly inclined slope.

5. A tunnel construction pipeline quick connection device according to claim 3 or 4, characterized in that: A flexible pad (10) is arranged on the inner side surface of the clamping block (5), and the inner side surface of the flexible pad (10) is arranged in an arc shape that matches the outer surface of the butt male head.

6. A tunnel construction pipeline quick connection device according to claim 2, characterized in that: The end of the pull rod (6) is rotatably connected to the outer sleeve (4), and the pressing block (9) is arranged on a side of the handle (2) away from the outer sleeve (4).

7. A tunnel construction pipeline quick connection device according to claim 6, characterized in that: The pull rod (6) is an elastic telescopic rod, and when the lever (2) is rotated to lock the male connector, the pull rod (6) is stretched.

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