Adjustable anti-collapse support device for excavation of drainage pipeline
By designing an adjustable anti-collapse support device, the problem of the retaining frame being unable to be adjusted was solved, achieving effective support and convenient installation for tunnels of different specifications, and reducing the risk of collapse.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- TIANYU ENG CONSULTING CO LTD
- Filing Date
- 2025-09-03
- Publication Date
- 2026-05-15
AI Technical Summary
The existing retaining frame cannot be adjusted according to the horizontal width and vertical depth of the tunnel for the pre-buried drainage pipe, resulting in poor support effect and inconvenient installation and operation.
An adjustable anti-collapse support device including a first L-shaped baffle and a second L-shaped baffle is designed. It supports both sides of the tunnel through a spacing adjustment structure and a longitudinal adjustment structure. It is adjusted by using threaded sections, adjusting nuts and collars, and is fixed to the foundation by ground anchors.
It effectively supports tunnels of different widths and depths, improving the ease of installation and support effect, and reducing the occurrence of collapse accidents.
Smart Images

Figure CN224245563U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to drainage pipe construction technology, and in particular to an adjustable anti-collapse support device for drainage pipe excavation. Background Technology
[0002] With the construction of water conservancy facilities, both farmland irrigation and domestic water transmission are achieved through buried pipelines. Pipeline burial primarily involves excavating trenches on the ground surface to bury the pipes. This method offers numerous advantages, including concealment, safety, minimal traffic disruption, small footprint, and stable underground soil. However, in areas with soft soil, the soil around the trench can easily collapse due to factors such as the strength of the soil within the trench or human trampling. This can lead to soil loss and, in severe cases, landslides, requiring further cleaning and reducing excavation efficiency. Therefore, it is necessary to reinforce the excavated trenches with retaining walls to reduce the likelihood of landslides.
[0003] The current retaining frame cannot be adjusted according to the horizontal width and vertical depth of the tunnel with the pre-buried drainage pipe, and cannot provide continuous support for the soil on both sides of tunnels of different specifications. Its support effect is poor, and it is also inconvenient to install and operate. Utility Model Content
[0004] The technical problem to be solved by this utility model is to provide an adjustable anti-collapse support device for excavating drainage pipes. This solves the problems that current retaining frames cannot be adjusted according to the horizontal width and vertical depth of the pre-buried drainage pipe tunnel, cannot provide continuous support for the soil on both sides of tunnels of different specifications, have poor support effect, and are inconvenient to install and operate.
[0005] To solve the above-mentioned technical problems, this utility model provides: an adjustable anti-collapse support device for drainage pipe excavation, including a first L-shaped baffle and a second L-shaped baffle, which are connected by a spacing adjustment structure. The spacing adjustment structure includes a first transverse support rod and a second transverse support rod. The first transverse support rod is disposed on one side surface of the first L-shaped baffle, and the second transverse support rod is disposed on one side surface of the second L-shaped baffle. A threaded section is provided on the first transverse support rod, and an adjusting nut is provided on the threaded section. A collar is rotatably disposed on one side of the second transverse support rod, and an adjusting handle is provided between the adjusting nut and the collar. A longitudinal adjustment structure is provided on the lower side of the first L-shaped baffle and the second L-shaped baffle.
[0006] Preferably, the longitudinal adjustment structure includes a first extension plate and a second extension plate. The first extension plate is movably disposed in a mounting groove on one side of the first L-shaped baffle, and the second extension plate is movably disposed in a mounting groove on one side of the second L-shaped baffle. This allows for adjustment of the longitudinal position of the first extension plate and the second extension plate to meet the support requirements of tunnels of different depths.
[0007] Preferably, a sleeve is provided on one side surface of the first extension plate, and an adjusting rod is movably disposed inside the sleeve. One end of the adjusting rod is connected to the second extension plate, so that the adjusting rod can move inside the sleeve when the distance between the first L-shaped baffle and the second L-shaped baffle is adjusted.
[0008] Preferably, a positioning knob is provided on one side of the outer surface of the sleeve, and one end of the positioning knob abuts against the adjusting rod, which can position and lock the position of the adjusting rod.
[0009] Preferably, limiting blocks are provided on both sides of the first extension plate and the second extension plate. The limiting blocks are movably disposed in the limiting openings, which are symmetrically disposed on both sides of the mounting groove, thereby improving the guiding performance of the first extension plate and the second extension plate when they move.
[0010] Preferably, both the first extension plate and the second extension plate are provided with a base plate at their bottom, which improves the support of the bottom of the first extension plate and the second extension plate.
[0011] Preferably, the first extension plate and the second extension plate are provided with a first mounting hole at their upper parts. The first mounting hole corresponds to a side mounting hole, which is located on one side of the storage groove, and can connect the first extension plate and the second extension plate to the first L-shaped baffle and the second L-shaped baffle.
[0012] Preferably, the lower part of the first extension plate and the second extension plate is provided with a second mounting hole, which is used to install the second ground anchor and can connect the first extension plate and the second extension plate to the foundation.
[0013] The beneficial effects of this utility model are:
[0014] 1. This utility model, through the setting of the spacing adjustment structure, can adjust the spacing between the first L-shaped baffle and the second L-shaped baffle, and make the first L-shaped baffle and the second L-shaped baffle fit into the foundation on both sides of the tunnel, so as to meet the support of tunnels of different widths.
[0015] 2. This utility model, through the setting of the longitudinal adjustment structure, can meet the needs of supporting the foundation on both sides of the tunnel at different depths, and can meet the use of different tunnels. Its overall installation and operation are convenient. Attached Figure Description
[0016] Figure 1A schematic diagram of the overall structure of this utility model;
[0017] Figure 2 This is a schematic diagram of the mid-spacing adjustment structure of this utility model;
[0018] Figure 3 for Figure 2 A partially enlarged structural diagram of section A in the middle;
[0019] Figure 4 This is a schematic diagram of the longitudinal adjustment structure in this utility model;
[0020] Figure 5 This is a front cross-sectional view of the present invention in use.
[0021] In the diagram: 1. First L-shaped baffle, 2. Spacing adjustment structure, 3. Top mounting hole, 4. Second L-shaped baffle, 5. Side mounting hole, 6. Longitudinal adjustment structure, 7. First ground anchor, 8. Mounting groove, 9. Limiting port, 21. First transverse support rod, 22. Second transverse support rod, 23. Threaded section, 24. Adjusting nut, 25. Adjusting handle, 26. Collar, 61. First extension plate, 62. Sleeve, 63. Positioning knob, 64. First mounting hole, 65. Second extension plate, 66. Second mounting hole, 67. Adjusting rod, 68. Base plate, 69. Limiting block. Detailed Implementation
[0022] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. All directional indicators (such as up, down, left, right, front, back, etc.) in the present utility model are only used to explain the relative positional relationship and movement of each component in a certain posture (as shown in the accompanying drawings). If the specific posture changes, the directional indicator will also change accordingly.
[0023] Please see Figures 1-3 An adjustable anti-collapse support device for drainage pipe excavation includes a first L-shaped baffle 1 and a second L-shaped baffle 4, which are connected by a spacing adjustment structure 2. The spacing adjustment structure 2 includes a first transverse support rod 21 and a second transverse support rod 22. The first transverse support rod 21 is disposed on one side surface of the first L-shaped baffle 1, and the second transverse support rod 22 is disposed on one side surface of the second L-shaped baffle 4. A threaded section 23 is provided on the first transverse support rod 21, and an adjusting nut 24 is provided on the threaded section 23. A collar 26 is rotatably disposed on one side of the second transverse support rod 22. An adjusting handle 25 is provided between the adjusting nut 24 and the collar 26. A longitudinal adjustment structure 6 is provided on the lower side of the first L-shaped baffle 1 and the second L-shaped baffle 4.
[0024] First, adjust the spacing between the first L-shaped baffle 1 and the second L-shaped baffle 4 according to the width of the pre-buried drainage pipe. Rotate the adjustment handle 25, which drives the adjustment nut 24 to rotate and move on the threaded section 23. At the same time, the adjustment plate drives the collar 26 to rotate on the second transverse support rod 22. As the adjustment nut 24 moves, it drives the second transverse support rod 22 to move. The second transverse support rod 22 drives the second L-shaped baffle 4 to move. When the first L-shaped baffle 1 and the second L-shaped baffle 4 are in contact with the foundation on both sides of the tunnel, stop rotating the adjustment handle 25. The first L-shaped baffle 1 and the second L-shaped baffle 4 support the foundation on both sides of the tunnel.
[0025] Furthermore, the first L-shaped baffle 1 and the second L-shaped baffle 4 are also provided with top mounting holes 3, and a first ground anchor 7 is installed in the top mounting holes 3. When the first L-shaped baffle 1 and the second L-shaped baffle 4 are attached to the foundation on both sides of the tunnel, the first ground anchor 7 is passed through the top mounting holes 3 and fixed in the foundation, so that the first L-shaped baffle 1 and the second L-shaped baffle 4 are fixed to the foundation.
[0026] Please see Figure 4 as well as Figure 5 The longitudinal adjustment structure 6 includes a first extension plate 61 and a second extension plate 65. The first extension plate 61 is movably disposed in the mounting groove 8 on one side of the first L-shaped baffle 1, and the second extension plate 65 is movably disposed in the mounting groove 8 on one side of the second L-shaped baffle 4. The longitudinal position of the first extension plate 61 and the second extension plate 65 can be adjusted to meet the support of tunnels of different depths. A sleeve 62 is provided on one side surface of the first extension plate 61, and an adjusting rod 67 is movably disposed in the sleeve 62. One end of the adjusting rod 67 is connected to the second extension plate 65. When the distance between the first L-shaped baffle 1 and the second L-shaped baffle 4 is adjusted, the adjusting rod 67 can move within the sleeve 62.
[0027] When the spacing between the first L-shaped baffle 1 and the second L-shaped baffle 4 is adjusted, the second L-shaped baffle 4 drives the second extension plate 65 to move laterally, and the second extension plate 65 drives the adjusting rod 67 to move within the sleeve 62. After the first L-shaped baffle 1 and the second L-shaped baffle 4 are fixed, the sleeve 62 is pushed downward. The sleeve 62, through the adjusting rod 67, simultaneously drives the first extension plate 61 and the second extension plate 65 to move within the mounting groove 8. After the first extension plate 61 and the second extension plate 65 are in contact with the bottom of the tunnel, the first extension plate 61 and the second extension plate 65 support the foundation on both sides of the bottom of the tunnel.
[0028] Furthermore, a positioning knob 63 is provided on one side of the outer surface of the sleeve 62. One end of the positioning knob 63 abuts against the adjusting rod 67. After the distance between the first L-shaped baffle 1 and the second L-shaped baffle 4 is adjusted, the positioning knob 63 is tightened to fix the adjusting rod 67, thereby locking the position of the adjusting rod 67.
[0029] Furthermore, limiting blocks 69 are provided on both sides of the first extension plate 61 and the second extension plate 65. The limiting blocks 69 are movably disposed in the limiting openings 9. The limiting openings 9 are symmetrically disposed on both sides of the mounting groove 8. When the first extension plate 61 and the second extension plate 65 move, they drive the limiting blocks 69 to move within the limiting openings 9, thereby improving the guiding performance of the first extension plate 61 and the second extension plate 65 during movement.
[0030] Furthermore, both the first extension plate 61 and the second extension plate 65 are provided with a base plate 68, which improves the support of the bottom of the first extension plate 61 and the second extension plate 65.
[0031] Furthermore, the first extension plate 61 and the second extension plate 65 are provided with a first mounting hole 64 on the upper part. The first mounting hole 64 corresponds to the side mounting hole 5. The side mounting hole 5 is located on one side inside the storage groove. The second ground anchor 10 can pass through the first mounting hole 64 and the side mounting hole 5 and connect to the foundation, so that the first extension plate 61 and the second extension plate 65 can be connected to the first L-shaped baffle 1 and the second L-shaped baffle 4.
[0032] Furthermore, a second mounting hole 66 is provided at the lower part of the first extension plate 61 and the second extension plate 65. The second mounting hole 66 is used to install the second ground anchor 10, which can connect the first extension plate 61 and the second extension plate 65 to the foundation. After the first extension plate 61 and the second extension plate 65 are attached to the bottom of the tunnel, the second ground anchor 10 is inserted through the second mounting hole 66 and inserted into the foundation to fix the first extension plate 61 and the second extension plate 65 to the foundation.
[0033] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.
Claims
1. An adjustable anti-collapse support device for drainage pipe excavation, characterized in that: The system includes a first L-shaped baffle (1) and a second L-shaped baffle (4), which are connected by a spacing adjustment structure (2). The spacing adjustment structure (2) includes a first transverse support rod (21) and a second transverse support rod (22). The first transverse support rod (21) is disposed on one side surface of the first L-shaped baffle (1), and the second transverse support rod (22) is disposed on one side surface of the second L-shaped baffle (4). A threaded section (23) is provided on the first transverse support rod (21), and an adjusting nut (24) is provided on the threaded section (23). A collar (26) is rotatably disposed on one side of the second transverse support rod (22), and an adjusting handle (25) is provided between the adjusting nut (24) and the collar (26). A longitudinal adjustment structure (6) is provided on the lower side of the first L-shaped baffle (1) and the second L-shaped baffle (4).
2. The adjustable anti-collapse support device for drainage pipe excavation according to claim 1, characterized in that: The longitudinal adjustment structure (6) includes a first extension plate (61) and a second extension plate (65). The first extension plate (61) is movably disposed in the mounting groove (8) on one side of the first L-shaped baffle (1), and the second extension plate (65) is movably disposed in the mounting groove (8) on one side of the second L-shaped baffle (4).
3. The adjustable anti-collapse support device for drainage pipe excavation according to claim 2, characterized in that: A sleeve (62) is provided on one side surface of the first extension plate (61), and an adjusting rod (67) is movably provided inside the sleeve (62). One end of the adjusting rod (67) is connected to the second extension plate (65).
4. An adjustable anti-collapse support device for drainage pipe excavation according to claim 3, characterized in that: A positioning knob (63) is provided on one side of the outer surface of the sleeve (62), and one end of the positioning knob (63) abuts against the adjusting rod (67).
5. An adjustable anti-collapse support device for drainage pipe excavation according to claim 2 or 3, characterized in that: Limiting blocks (69) are provided on both sides of the first extension plate (61) and the second extension plate (65). The limiting blocks (69) are movably disposed in the limiting openings (9). The limiting openings (9) are symmetrically disposed on both sides of the mounting groove (8).
6. An adjustable anti-collapse support device for drainage pipe excavation according to claim 5, characterized in that: Both the first extension plate (61) and the second extension plate (65) are provided with a base plate (68).
7. An adjustable anti-collapse support device for drainage pipe excavation according to claim 6, characterized in that: The first extension plate (61) and the second extension plate (65) are provided with a first mounting hole (64) on the upper part. The first mounting hole (64) corresponds to the side mounting hole (5). The side mounting hole (5) is provided on one side inside the storage groove.
8. An adjustable anti-collapse support device for drainage pipe excavation according to claim 7, characterized in that: The first extension plate (61) and the second extension plate (65) are provided with a second mounting hole (66) at their lower parts. The second mounting hole (66) is used to install the second ground anchor (10).