Quick pipe replacing device

Abstract

The utility model discloses a quick pipe replacing device which comprises a pipe replacing support, a connecting support is arranged below the pipe replacing support, two connecting rods are detachably connected to the connecting support through a U-shaped plate, the two ends of each connecting rod are connected with idler wheels, a communicating pipe is fixedly connected to the pipe replacing support, and the communicating pipe is connected with a telescopic inner pipe through a flange. A telescopic inner pipe is arranged on the guide rail, a telescopic sleeve is arranged outside the telescopic inner pipe in a sleeved mode, a first connecting base is arranged on the telescopic inner pipe, a second connecting base is arranged on the telescopic sleeve, and the first connecting base and the second connecting base are connected through a hydraulic telescopic rod. Relative movement between the telescopic sleeve and the telescopic inner pipe is achieved in cooperation with the hydraulic telescopic rod, so that the mud pipe can be rapidly replaced, the stability of the whole pipe replacing device is enhanced by arranging the overturning-preventing support, and the situation that the pipe is accidentally inclined or overturned in the pipe replacing process is prevented.

Description

Technical Field

[0001] The utility model relates to the technical field of shield machines, in particular to a quick pipe changing device. Background Art

[0002] With the continuous advancement of urbanization and the rapid development of urban infrastructure, shield tunneling technology has become increasingly widely used in urban planning. This construction method, with its advantages of efficiency, safety, and environmental friendliness, has gradually become the preferred option for tunnel construction. With the accumulation of practical experience and technological innovation, shield construction technology has become increasingly mature and sophisticated, and more and more cities are adopting shield tunneling for tunnel construction.

[0003] However, although shield tunnel construction technology has made significant progress, it still faces some challenges in practical application. Among them, a prominent problem is the tight construction period. Most tunnel engineering projects are required to be completed in a relatively short period of time, which puts higher demands on the tunneling efficiency of the shield machine. In order to meet the construction period requirements, the shield machine must have the ability to advance quickly. In the construction process of traditional slurry shield machines, the excavation speed is affected by many factors, one of which is the need to frequently install and remove slurry pipes during the excavation process. This process is not only time-consuming and labor-intensive, but also directly affects the tunneling efficiency of the shield machine. In order to improve the efficiency of the shield machine's rapid excavation, the utility model proposes a quick pipe replacement device. Utility Model Content

[0004] In view of the problems in the related art, the present invention proposes a quick tube changing device to overcome the above technical problems existing in the existing related art.

[0005] To this end, the specific technical solutions adopted in this utility model are as follows:

[0006] A quick pipe changing device includes a pipe changing bracket, a connecting bracket is provided below the pipe changing bracket, a connecting rod is detachably connected to the connecting bracket through a U-shaped plate, there are two connecting rods, both ends of the connecting rod are connected to rollers, a connecting pipe is fixedly connected to the pipe changing bracket, the connecting pipe is connected to a telescopic inner pipe through a flange, a telescopic sleeve is provided on the outside of the telescopic inner pipe, a first connecting seat is provided on the telescopic inner pipe, a second connecting seat is provided on the telescopic sleeve, and the first connecting seat and the second connecting seat are connected by a hydraulic telescopic rod.

[0007] Furthermore, one end of the telescopic sleeve is connected to the mud pipe through a clamp, and one end of the connecting pipe is connected to the ball valve through a flange.

[0008] Furthermore, the roller is arranged inside the guide rail, and there are two guide rails. A box is fixedly connected to the bottom of one guide rail, and the other guide rail is connected to the fixed pile through a countersunk bolt.

[0009] Furthermore, the fixing piles are fixed inside the box.

[0010] Furthermore, mounting piles are provided on the front and rear sides of the box body, and limiting plates are provided above the mounting piles.

[0011] Furthermore, bottom slurry discharge pipes are provided on both sides of the box body.

[0012] Furthermore, baffles are fixedly connected to both ends of the connecting bracket by bolts.

[0013] Furthermore, mounting plates are provided on both sides of the connecting bracket, and limit wheels are fixed on the mounting plates by bolts.

[0014] Furthermore, an anti-overturning bracket is fixedly connected to the pipe changing bracket.

[0015] Furthermore, a connection joint is provided on one side of the installation pile.

[0016] The beneficial effects of the utility model are:

[0017] (1) Through the design of connecting rods and rollers, the pipe changing bracket can move smoothly on the guide rail, and cooperate with the hydraulic telescopic rod to realize the relative movement between the telescopic sleeve and the telescopic inner tube, so that the mud pipe replacement operation can be completed quickly. In addition, by setting up an anti-overturning bracket, the stability of the entire pipe changing device is enhanced to prevent accidental tilting or overturning during the pipe changing process.

[0018] (2) By setting up the box body and the bottom slurry discharge pipe, the mud leakage generated during the pipe replacement process can be collected and discharged, keeping the working environment clean; and when the internal mud accumulates too much and cannot be discharged through the bottom slurry discharge pipe, one of the guide rails can be disassembled to facilitate manual cleaning of the box body. The design of the detachable guide rail provides convenience for cleaning work in special circumstances, further improving the reliability and practicality of the equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0020] Figure 1 This is a front view of a quick tube changing device according to an embodiment of the utility model;

[0021] Figure 2 This is a side view of a quick tube changing device according to an embodiment of the present utility model;

[0022] Figure 3 This is a structural diagram of a connection bracket for a quick tube-changing device according to an embodiment of the present utility model;

[0023] Figure 4 This is a structural diagram of a guide rail of a quick tube changing device according to an embodiment of the present utility model.

[0024] In the picture:

[0025] 1. Pipe replacement bracket; 2. Connecting bracket; 3. U-shaped plate; 4. Connecting rod; 5. Roller; 6. Connecting pipe; 7. Telescopic inner tube; 8. Telescopic sleeve; 9. First connecting seat; 10. Second connecting seat; 11. Hydraulic telescopic rod; 12. Clamp; 13. Ball valve; 14. Guide rail; 15. Box; 16. Countersunk bolt; 17. Fixed pile; 18. Mounting pile; 19. Limiting plate; 20. Bottom slurry discharge pipe; 21. Baffle; 22. Mounting plate; 23. Limiting wheel; 24. Anti-overturning bracket; 25. Connecting joint; 26. Mud pipe. DETAILED DESCRIPTION

[0026] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0027] According to an embodiment of the present utility model, a quick tube changing device is provided.

[0028] Example 1

[0029] like Figures 1-4As shown, the quick tube changing device according to the embodiment of the present utility model includes a tube changing bracket 1, a connecting bracket 2 is provided below the tube changing bracket 1, a connecting rod 4 is detachably connected to the connecting bracket 2 through a U-shaped plate 3, the number of the connecting rods 4 is two, and rollers 5 are connected to both ends of the connecting rod 4. A connecting pipe 6 is fixedly connected to the tube changing bracket 1, and the connecting pipe 6 is connected to a telescopic inner tube 7 through a flange. A telescopic sleeve 8 is provided on the outside of the telescopic inner tube 7, a first connecting seat 9 is provided on the telescopic sleeve 8, a second connecting seat 10 is provided on the telescopic sleeve 8, and the first connecting seat 9 and the second connecting seat 10 are connected by a hydraulic telescopic rod 1 1, one end of the telescopic sleeve 8 is connected to the mud pipe 26 through the clamp 12, one end of the connecting pipe 6 is connected to the ball valve 13 through the flange, and the other end of the ball valve 13 is connected to the mud hose of the extension pipe trolley. The two ends of the connecting bracket 2 are fixed with baffles 21 by bolts. By setting the baffle 21, the roller 5 can be effectively prevented from continuing to move, which facilitates pipe replacement. Mounting plates 22 are provided on both sides of the connecting bracket 2. Limiting wheels 23 are fixed on the mounting plates 22 by bolts. By setting the limiting wheels 23, the limiting wheels 23 can ensure the stability of the connecting bracket 2 when moving on the guide rail 14. Through the above solution, through the design of the connecting rod 4 and the roller 5, the pipe changing bracket 1 can move smoothly on the guide rail 14, and cooperate with the hydraulic telescopic rod 11 to realize the relative movement between the telescopic sleeve 8 and the telescopic inner tube 7, so that the replacement operation of the mud pipe 26 can be completed quickly. Since the distance between the connecting bracket 2 and the mud pipe inside the tunnel is uncertain, the distance between the two can be adjusted by starting the telescopic rod, which facilitates the installation of the new mud pipe 26. In addition, by providing the anti-overturning bracket 24, the stability of the entire pipe changing device is enhanced to prevent accidental tilting or overturning during the pipe changing process.

[0030] like Figures 1-4 As shown, the roller 5 is arranged inside the guide rail 14. There are two guide rails 14. A box body 15 is fixedly connected to the bottom of one guide rail 14. The other guide rail 14 is connected to a fixing pile 17 by a countersunk bolt 16. The fixing pile 17 is fixed to the inside of the box body 15. Mounting piles 18 are provided on the front and rear sides of the box body 15. A limit plate 19 is provided above the mounting pile 18. A connecting joint 25 is provided on one side of the mounting pile 18. Bottom slurry discharge pipes 20 are provided on both sides of the box body 15. Through the above scheme, the box body 15 and the bottom slurry discharge pipe 20 are provided, so that the mud leakage generated during the pipe replacement process can be collected and discharged, keeping the working environment clean. When the internal mud accumulates too much and cannot be discharged through the bottom slurry discharge pipe 20, one of the guide rails 14 can be disassembled by removing the countersunk bolt 16, which is convenient for manual cleaning of the box body 15. The design of the detachable guide rail 14 provides convenience for cleaning work under special circumstances, further improving the reliability and practicality of the equipment.

[0031] In order to facilitate understanding of the above technical solutions of the present invention, the working principle or operation method of the present invention in actual process is described in detail below.

[0032] In actual use, the tube-changing support 1 is connected to the shield machine via the connecting joint 25. The shield machine advances and pulls the tube-changing support 1 along the tunnel. The telescopic sleeve 8 on the tube-changing support 1 is connected to the mud pipe 26 via the clamp 12. Because the mud pipe 26 in the tunnel is stationary, the tube-changing support 1 is also stationary, but the tube-changing support 1 moves backward along the tunnel relative to the guide rail 14. When the tube-changing support 1 moves to the end position, the baffle 21 contacts the limit plate 19, and the roller 5 stops moving. The clamp 12 is then removed to disconnect the telescopic sleeve 8 from the mud pipe 26. The winch in the front extension tube trolley is activated to retract the mud hose of the extension tube trolley, causing it to pull the tube-changing support 1 along the direction of the shield machine's advance. When the tube-changing support 1 reaches the starting position, the limit plate 19 at the starting position limits the roller 5, causing the tube-changing support 1 to stop moving and the winch to stop retracting the hose. Place the new mud pipe 26 at the pipe replacement rack, first connect it to the mud pipe 26 in the tunnel, and then connect it to the telescopic sleeve 8, so that the new mud pipe 26 can be connected to the telescopic sleeve 8 to realize the pipe replacement of the mud pipe 26. The mud leaked during the pipe replacement is stored in the box 15 and discharged through the bottom slurry discharge pipe 20.

[0033] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A quick tube changing device, characterized in that: The invention comprises a pipe-changing bracket (1), wherein a connecting bracket (2) is provided below the pipe-changing bracket (1), a connecting rod (4) is detachably connected to the connecting bracket (2) via a U-shaped plate (3), the number of the connecting rods (4) is two, and rollers (5) are connected to both ends of the connecting rod (4), a connecting pipe (6) is fixedly connected to the pipe-changing bracket (1), the connecting pipe (6) is connected to a telescopic inner pipe (7) via a flange, a telescopic sleeve (8) is provided on the outside of the telescopic inner pipe (7), a first connecting seat (9) is provided on the telescopic inner pipe (7), a second connecting seat (10) is provided on the telescopic sleeve (8), and the first connecting seat (9) and the second connecting seat (10) are connected via a hydraulic telescopic rod (11).

2. A quick tube changing device according to claim 1, characterized in that: One end of the telescopic sleeve (8) is connected to the mud pipe (26) via a clamp (12), and one end of the connecting pipe (6) is connected to the ball valve (13) via a flange.

3. The quick tube changing device according to claim 1, characterized in that: The roller (5) is arranged inside the guide rail (14). There are two guide rails (14). A box (15) is fixedly connected to the bottom of one guide rail (14), and the other guide rail (14) is connected to a fixed pile (17) via a countersunk bolt (16).

4. A quick tube changing device according to claim 3, characterized in that: The fixing pile (17) is fixed inside the box (15).

5. The quick tube changing device according to claim 3, characterized in that: Mounting piles (18) are provided on the front and rear sides of the box body (15), and a limiting plate (19) is provided above the mounting piles (18).

6. The quick tube changing device according to claim 3, characterized in that: Bottom slurry discharge pipes (20) are provided on both sides of the box body (15).

7. The quick tube changing device according to claim 1, characterized in that: Both ends of the connecting bracket (2) are fixedly connected to baffles (21) via bolts.

8. The quick tube changing device according to claim 1, characterized in that: Mounting plates (22) are provided on both sides of the connecting bracket (2), and limiting wheels (23) are fixed to the mounting plates (22) via bolts.

9. The quick tube changing device according to claim 1, characterized in that: An anti-overturning bracket (24) is fixedly connected to the pipe replacement bracket (1).

10. The quick tube changing device according to claim 5, characterized in that: A connecting joint (25) is provided on one side of the installation pile (18).

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