Temporary simple supporting device for open cut foundation pit construction
By designing the limit structure of the support pipe, pin rod and chain and the combination of crown guard beam protective rubber pads, the problem of reuse of foundation pit support devices and the problem of suspended pipeline protection is solved, and rapid assembly and safety protection of pipelines are achieved.
Patent Information
- Application Number
- CN202421734990.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-07-22
- Publication Date
- 2025-08-08
- Estimated Expiration
- 2034-07-22
AI Technical Summary
The existing foundation pit support devices are easily lost when reused, the construction site is messy, and the original hanging pipes are prone to oxidation and sinking, which affects service life and safety.
A support device including a first support pipe, a second support pipe, a support plate, a pin rod and a chain is designed to ensure that the pin rod is not lost through the limiting block and the ear plate structure, and the suspended pipe is protected by a crown guard beam and a protective rubber pad to enhance its strength and protection.
It realizes rapid reuse and positioning of the support device, prevents the loss of parts, protects suspended pipes from oxidation and sinking, extends service life and ensures safety.
Smart Images
Figure CN223202343U_ABST
Abstract
Description
Technical Field
[0001] The utility model belongs to the technical field of construction engineering, and in particular relates to a temporary simple supporting device for open excavation foundation pit construction. Background Art
[0002] At present, the construction of outdoor drainage pipelines mainly adopts the open excavation construction method and the jacking construction method. For the open excavation construction method, the construction process steps usually include two steps: excavating the foundation pit and laying the pipeline. In order to prevent the side walls of the foundation pit from collapsing or sliding, the side walls of the foundation pit need to be supported before the pipeline laying step. The existing foundation pit support methods mainly include setting pile rows, internal supports, soil reinforcement, etc.
[0003] In the prior art, the patent document with the announcement number "CN116770954A" discloses a method for constructing large-diameter reinforced concrete pipelines by open excavation and concealed jacking, including the steps of open excavation of foundation pit, installation of jacking equipment, jacking of pipelines, backfilling of foundation pit, grouting of pipelines, etc., and the construction is carried out by combining open excavation and concealed jacking. The underground pipelines and structures along the way are explored by the open excavation process of the excavator. The patented technology adopts the concealed jacking pipeline process of the hydraulic jack, which cleverly uses the pipeline itself as the foundation pit wall support, shortens the excavation distance, and reduces the construction cost. However, the open excavation of foundation pit requires the excavation of a large amount of earth and stone, so that the original pipeline is exposed to the outside, and then the foundation pit is supported. If the foundation pit support device needs to be reused, some parts with smaller external dimensions are easy to be lost. At the construction site, various construction tools and materials are often piled up in a disorderly manner, making them difficult to find. In addition, since municipal drainage pipeline projects are mostly located in urban areas with dense populations, busy traffic, numerous ground buildings, intricate underground pipelines, and complex stratum structures, during the municipal pipeline construction process, the newly laid pipelines will inevitably intersect with the original underground pipelines. At this time, it is necessary to excavate earth and stone, so that the original pipelines are suspended in the air and exposed to the air. On the one hand, the oxygen in the external environment will cause oxidation on the surface of the original pipelines, affecting the service life of the original pipelines; on the other hand, the original pipelines are still loaded with a large amount of fluid. After a large amount of earth and stone are excavated, the original pipelines are suspended above the foundation pit. The weight load of the fluid itself will cause the original pipelines to sink, affecting the safe operation of the original pipelines. Utility Model Content
[0004] In order to solve the above technical problems, the utility model provides a temporary simple supporting device for open excavation foundation pit construction.
[0005] The utility model is achieved through the following technical solutions.
[0006] The utility model provides a temporary simple support device for open excavation foundation pit construction, comprising a first support tube, a second support tube, a support plate, a pin rod and a chain, wherein the support plate is respectively fixedly connected to one end of the first support tube and one end of the second support tube, the other end of the second support tube is sleeved into the other end of the first support tube, a plurality of pin holes are provided on the surface of the second support tube, a slot hole is provided on the surface of the first support tube, the first support tube is also screwed to a limit block, the surface of the limit block is fixedly connected to an ear plate, the chain is connected between the pin rod and the ear plate, and the apertures of the pin holes and the slot holes are both larger than the outer diameter of the pin rod.
[0007] An ear hole is provided on the surface of the ear plate, and the diameter of the ear hole is larger than the outer diameter of the pin rod.
[0008] The first support tube is also threadedly connected to a locking block, and the locking block can be tightened with the limiting block.
[0009] The limit block or locking block can be replaced by an external hexagonal nut.
[0010] The slot is a waist-shaped hole, and its length direction is consistent with the axial direction of the first support tube.
[0011] The temporary simple supporting device for open excavation foundation pit construction also includes a vertical guard plate, which is clamped between the support plate and the side wall of the foundation pit.
[0012] The temporary simple support device for open excavation foundation pit construction also includes a crown guard beam, a first clamp and a second clamp. The crown guard beam is placed at the opening of the foundation pit. A through pipe is provided in the foundation pit. The left and right ends of the first clamp are respectively fixedly connected to the left and right ends of the second clamp, and the through pipe is clamped between the first clamp and the second clamp. Protective rubber pads are also sandwiched between the first clamp and the through pipe and between the second clamp and the through pipe. The chain is also connected between the first clamp and the crown guard beam or between the second clamp and the crown guard beam.
[0013] The number of the first clamps and the second clamps is multiple pairs, and the multiple pairs of first clamps and the second clamps are arranged at equal intervals along the length direction of the through pipe.
[0014] The number of the first clamps and the second clamps is more than 3 pairs.
[0015] The protective rubber pad is in a semi-cylindrical shape as a whole.
[0016] The beneficial effect of the present invention is that: by adopting the technical solution of the present invention, the second support tube is sleeved in the first support tube, and when the pin rod is inserted into the corresponding slot hole and pin hole, the limit block and the pin rod are tightened, so that the support device completely supports the two side walls of the foundation pit that are opposite to each other, and effectively supports the side of the foundation pit. Since the pin rod is hung on the ear plate by using a chain, the pin rod can be prevented from being lost. When the support device needs to be reused, the matching pin rod can be quickly found at the construction site for use, and the support device can be quickly assembled. In addition, when the assembler needs to adjust the support length of the entire support device, it is necessary to apply a force to the limit block. Since the limit block surface is provided with an ear plate, the ear plate can be used as a fulcrum for tools such as wrenches and crowbars on the limit block surface, which is convenient for workers to apply force or perform corresponding operations. BRIEF DESCRIPTION OF THE DRAWINGS
[0017] Figure 1 It is the main view of the utility model;
[0018] Figure 2 This utility model Figure 1 A partial enlarged view of point Ⅰ in the middle;
[0019] Figure 3 This utility model Figure 1 A partial enlarged view of point II in the middle.
[0020] In the figure: 1-first support tube, 2-second support tube, 3-support plate, 4-pin rod, 5-chain, 6-pin hole, 7-slot hole, 8-ear plate, 9-limit block, 10-locking block, 11-vertical guard plate, 12-crown guard beam, 13-first clamp, 14-second clamp, 15-through pipe, 16-protective rubber pad. DETAILED DESCRIPTION
[0021] The technical solution of the present invention is further described below, but the scope of protection claimed is not limited to the described solution.
[0022] like Figures 1 to 3 As shown, the utility model provides a temporary simple support device for open excavation foundation pit construction, including a first support tube 1, a second support tube 2, a support plate 3, a pin rod 4 and a chain 5. The support plate 3 is respectively fixedly connected to one end of the first support tube 1 and one end of the second support tube 2, and the other end of the second support tube 2 is sleeved into the other end of the first support tube 1. A plurality of pin holes 6 are provided on the surface of the second support tube 2, and a slot hole 7 is provided on the surface of the first support tube 1. The first support tube 1 is also screwed with a limit block 9, and the surface of the limit block 9 is fixedly connected to the ear plate 8. The chain 5 is connected between the pin rod 4 and the ear plate 8. The aperture of the pin hole 6 and the aperture of the slot hole 7 are both larger than the outer diameter of the pin rod 4.
[0023] By adopting the technical solution of the present invention, the second support tube is sleeved in the first support tube, and when the pin rod is inserted into the corresponding slot hole and pin hole, the limit block and the pin rod are tightened, so that the support device completely supports the two side walls of the foundation pit that are opposite to each other, and effectively supports the side of the foundation pit. Since the pin rod is hung on the ear plate by using a chain, the pin rod can be prevented from being lost. When the support device needs to be reused, the matching pin rod can be quickly found at the construction site for use, and the support device can be quickly assembled. In addition, when the assembler needs to adjust the support length of the entire support device, it is necessary to apply a force to the limit block. Since the surface of the limit block is provided with an ear plate, the ear plate can be used as a fulcrum for tools such as wrenches and crowbars on the surface of the limit block, which is convenient for workers to apply force or perform corresponding operations.
[0024] Specifically, the surface of the ear plate 8 is provided with an ear hole, the diameter of which is larger than the outer diameter of the pin 4. Preferably, the pin 4 is L-shaped overall. The pin 4 can be replaced by a steel bar. Using the technical solution of the present utility model, when an operator applies a torque to the limit block using a crowbar, the crowbar can be inserted into the ear hole, making it easier for the operator to find a suitable point of force on the surface of the limit block.
[0025] In addition, the first support tube 1 is also screwed to the locking block 10, and the locking block 10 can be tightened with the limit block 9. The limit block 9 or the locking block 10 can be replaced by an external hexagonal nut. A plurality of pin holes 6 are arranged at equal intervals along the axial direction of the second support tube 2. The slotted hole 7 is a waisted circular hole, and its length direction is consistent with the axial direction of the first support tube 1. So that the utility model can be stably supported on the two side wall surfaces of the foundation pit that are opposite to each other. The temporary simple support device for open excavation foundation pit construction also includes a vertical guard plate 11, which is clamped between the support plate 3 and the side wall of the foundation pit. The vertical guard plate 11 can be replaced by a channel steel.
[0026] In addition, the temporary simple support device for open excavation foundation pit construction also includes a crown guard beam 12, a first clamp 13 and a second clamp 14. The crown guard beam 12 is erected at the opening of the foundation pit. A through pipe 15 is provided in the foundation pit. The left and right ends of the first clamp 13 are respectively fixedly connected to the left and right ends of the second clamp 14, and the through pipe 15 is clamped between the first clamp 13 and the second clamp 14. A protective rubber pad 16 is also sandwiched between the first clamp 13 and the through pipe 15 and between the second clamp 14 and the through pipe 15. The chain 5 is also connected between the first clamp 13 and the crown guard beam 12 or between the second clamp 14 and the crown guard beam 12. By adopting the technical solution of the present invention, when excavating earth and stone and causing the original pipeline to be suspended in the air, the protective rubber pad is used to wrap the original buried underground pipeline. The protective rubber pad is wrapped around the outer surface of the existing pipeline through the first clamp and the second clamp, thereby enhancing the strength and rigidity of the existing pipeline itself. The deadweight load of the fluid in the original pipeline is shared by the crown guard beam 12, which can avoid the sinking of the original pipeline and ensure the safe operation of the original pipeline. The protective rubber pad also blocks the surface of the original pipeline, which can prevent rainwater or sewage from invading the surface of the original pipeline, slow down the oxidation wear of the original pipeline surface, and extend the service life of the original pipeline. When the pipeline is laid and the earth and stone are backfilled, it is only necessary to remove the chain 5 and the crown guard beam 12, so that the first clamp 13, the second clamp 14 and the protective rubber pad 16 can continue to protect the original pipeline and extend its service life.
[0027] Specifically, the crown guard beam 12 can be replaced with channel steel. There are multiple pairs of first and second clamps 13, 14, arranged evenly spaced along the length of the through-tube 15. There are at least three pairs of first and second clamps 13, 14. The protective rubber pads 16 are generally semi-cylindrical in shape. There are only one pair of protective rubber pads 16.
Claims
1. A temporary simple support device for open excavation foundation pit construction, characterized by: The invention comprises a first support tube (1), a second support tube (2), a support plate (3), a pin rod (4) and a chain (5); the support plate (3) is respectively fixedly connected to one end of the first support tube (1) and one end of the second support tube (2); the other end of the second support tube (2) is sleeved into the other end of the first support tube (1); a plurality of pin holes (6) are provided on the surface of the second support tube (2); a slot hole (7) is provided on the surface of the first support tube (1); the first support tube (1) is also screwed to a limit block (9); the surface of the limit block (9) is fixedly connected to an ear plate (8); the chain (5) is connected between the pin rod (4) and the ear plate (8); the apertures of the pin holes (6) and the slot holes (7) are both larger than the outer diameter of the pin rod (4).
2. A temporary simple support device for open excavation construction according to claim 1, characterized in that: An ear hole is provided on the surface of the ear plate (8), and the diameter of the ear hole is larger than the outer diameter of the pin rod (4).
3. A temporary simple support device for open excavation construction according to claim 1, characterized in that: The first support tube (1) is also threadedly connected to a locking block (10), and the locking block (10) can be tightly fastened to the limiting block (9).
4. A temporary simple support device for open excavation construction according to claim 1 or 3, characterized in that: The limiting block (9) or the locking block (10) can be replaced by an external hexagonal nut.
5. A temporary simple support device for open excavation construction according to claim 1, characterized in that: The slotted hole (7) is a waist-shaped circular hole, and its length direction is consistent with the axial direction of the first support tube (1).
6. A temporary simple support device for open excavation construction according to claim 1, characterized in that: The temporary simple support device for open excavation foundation pit construction further comprises a vertical guard plate (11), which is clamped between the support plate (3) and the side wall of the foundation pit.
7. A temporary simple support device for open excavation construction according to claim 1, characterized in that: The temporary simple support device for open excavation foundation pit construction also includes a crown guard beam (12), a first clamp (13) and a second clamp (14). The crown guard beam (12) is placed at the opening of the foundation pit. A through pipe (15) is provided in the foundation pit. The left and right ends of the first clamp (13) are respectively fixedly connected to the left and right ends of the second clamp (14), and the through pipe (15) is clamped between the first clamp (13) and the second clamp (14). A protective rubber pad (16) is also sandwiched between the first clamp (13) and the through pipe (15) and between the second clamp (14) and the through pipe (15). The chain (5) is also connected between the first clamp (13) and the crown guard beam (12) or between the second clamp (14) and the crown guard beam (12).
8. A temporary simple support device for open excavation construction according to claim 7, characterized in that: The number of the first hoops (13) and the second hoops (14) is multiple pairs, and the multiple pairs of first hoops (13) and second hoops (14) are arranged at equal intervals along the length direction of the through pipe (15).
9. A temporary simple support device for open excavation construction according to claim 8, characterized in that: The number of the first hoops (13) and the second hoops (14) is more than three pairs.
10. A temporary simple support device for open excavation construction according to claim 7, characterized in that: The protective rubber pad (16) is in the shape of a semi-cylinder as a whole.