Construction protection framework of pipeline foundation pit

Abstract

The utility model discloses a pipeline foundation pit construction protection framework which comprises two stand columns, four supporting transverse rods are installed at the two ends of the outer walls of the two stand columns, adjusting supporting devices are installed above the side walls of the two stand columns, and expanders are installed below the side walls of the two stand columns. A telescopic operation rod is connected between the expander and the adjusting supporting device. The utility model relates to the technical field of foundation pit construction, by arranging the adjustor driven by the adjusting screw rod and utilizing the inclined plane matching of the second conical block and the first conical block, the transverse extending position of the guide plate and the bearing frame can be accurately controlled, so that the foundation pit supporting device is suitable for foundation pits with different widths, and meanwhile, the expander is matched with the telescopic operating rod. And an operator is allowed to quickly adjust the bottom supporting width of the whole framework by rotating the screw rod, so that the framework can be tightly attached to the side wall of the foundation pit, and the adaptability of the framework to different foundation pit sizes is enhanced.

Description

Technical Field

[0001] This utility model relates to the field of foundation pit construction technology, specifically to a construction protection structure for pipeline foundation pits. Background Technology

[0002] Pipeline pit construction is a common operation in municipal and building projects. To ensure construction safety and prevent pit wall collapse and falling object risks, protective structures are usually set up at or above the pit edge.

[0003] Traditional foundation pit protection structures are mostly fixed or built with simple support rods, which have certain limitations in stability and adaptability. The existing protection frame has a limited range of lateral width adjustment, making it difficult to flexibly adapt to foundation pits of different widths. At the same time, the stability of the overall structure often depends on on-site splicing and reinforcement, resulting in low installation efficiency and high requirements for ground flatness or pit wall condition. In addition, traditional support rods lack an effective quick locking mechanism after placement, posing a risk of accidental displacement or detachment.

[0004] Therefore, there is an urgent need to develop a pipeline foundation pit construction protection structure that can flexibly adapt to different foundation pit sizes, is easy to install, and provides stable support. Utility Model Content

[0005] To achieve the above objectives, this utility model provides the following technical solution:

[0006] The construction protection frame for the pipeline pit includes two columns, four supporting crossbars installed at both ends of the outer walls of the two columns, an adjusting support installed on the upper side walls of the two columns, an expander installed on the lower side walls of the two columns, and a telescopic operating rod connected between the expander and the adjusting support.

[0007] The adjusting support includes four guide sleeves, which are respectively installed on the upper sides of the two columns. Four guide plates are movably embedded in the four guide sleeves. Two mounting plates are installed on one end of the four guide plates. Two support brackets are installed on one side of the two mounting plates. A support rod is movably placed above the two support brackets. Two first conical blocks are installed on the other side of the two mounting plates. Two adjusters are installed on the side walls of the two columns. The tops of the two adjusters are movably embedded between the four guide plates and respectively contact the side walls of the two first conical blocks.

[0008] Preferably, the two adjusters include two fixed threaded blocks, which are respectively installed on the side wall of the column. Two adjusting screws are movably embedded in the two fixed threaded blocks. The top ends of the two adjusting screws are movably connected to two second conical blocks, and the side walls of the two second conical blocks are respectively in contact with the side walls of the two first conical blocks.

[0009] Preferably, the extender includes two hinge seats, which are respectively installed below the side walls of the two columns. Two operating rods are movably hinged in each of the two hinge seats, and a connecting plate is hinged to the other end of each of the two operating rods.

[0010] Preferably, the telescopic operating rod includes an internally threaded sleeve, which is fixedly embedded in the center of the support rod. A lead screw is movably embedded in the internally threaded sleeve, and a pressing block is machined at the bottom end of the lead screw. The pressing block is in contact with the wall surface of the connecting plate.

[0011] Preferably, two limiting frames are placed on both sides of the upper end of the support rod, and the two ends of the two limiting frames are respectively connected to the two sides of the two support frames by pins.

[0012] Preferably, both the support frame and the limiting frame are U-shaped.

[0013] This utility model provides a construction protection framework for pipeline foundation pits, which has the following beneficial effects:

[0014] By setting up an adjuster driven by an adjusting screw, and utilizing the inclined surfaces of the second and first conical blocks, the lateral extension positions of the guide plate and support frame can be precisely controlled, thereby adapting to pits of different widths. At the same time, the cooperation between the extender and the telescopic operating rod allows operators to quickly adjust the bottom support width of the entire frame by rotating the screw, so that it can fit tightly against the sidewall of the pit, enhancing the adaptability of the frame to different pit sizes.

[0015] Simultaneously, the guide sleeve and guide plate in the adjustable support form a stable lateral telescopic guide mechanism, ensuring the rigidity of the support frame in the extended state. The extender forms a stable bottom support frame through the hinge, operating rod and connecting plate. Finally, the support rod is placed on the U-shaped support frame and quickly locked by the U-shaped limit bracket and pin. This not only makes the placement and removal of the support rod easy, but also effectively prevents the support rod from rolling, slipping or accidentally falling off during use by wrapping and limiting it up, down and left and right, greatly improving the safety of operation. Attached Figure Description

[0016] Figure 1 This is a front-view three-dimensional structural diagram of the construction protection frame for the pipeline foundation pit described in this utility model.

[0017] Figure 2 This is a bottom-view three-dimensional structural diagram of the construction protection framework for the pipeline foundation pit described in this utility model.

[0018] Figure 3 This is an enlarged structural diagram of point A of the construction protection frame for the pipeline foundation pit described in this utility model.

[0019] In the diagram: 1. Column, 2. Support crossbar, 3. Guide sleeve, 4. Guide plate, 5. Mounting plate, 6. Support bracket, 7. Support rod, 8. First conical block, 9. Fixed threaded block, 10. Adjusting screw, 11. Second conical block, 12. Hinge seat, 13. Operating lever, 14. Connecting plate, 15. Internal threaded sleeve, 16. Lead screw, 17. Extrusion block, 18. Limiting bracket. Detailed Implementation

[0020] Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0021] Example: Please refer to Figures 1-3 The construction protection frame for the pipeline pit includes two columns 1, four support crossbars 2 installed at both ends of the outer wall of the two columns 1, an adjustable support installed on the upper side wall of the two columns 1, an extender installed on the lower side wall of the two columns 1, and a telescopic operating rod connected between the extender and the adjustable support.

[0022] When constructing the pipeline foundation pit, the workers first place two columns 1 on both sides of the pit. Then, steel plates are laid on the outside of the two columns 1 to fit against the inner walls of the pit. Four support crossbars 2 are then placed in contact with the steel plates. The tops of the two columns 1 are supported by adjusting the support device. Then, by operating the telescopic operating rod, the center of the expander is pushed. The adjustment force generated by the top adjuster works together to form a taut and stable structure, effectively resisting lateral loads and preventing overturning.

[0023] In the specific implementation process, the adjusting support includes four guide sleeves 3, which are respectively installed on the upper sides of the two columns 1. Four guide plates 4 are movably embedded in the four guide sleeves 3. Two mounting plates 5 are installed on one end of the four guide plates 4. Two support brackets 6 are installed on one side of the two mounting plates 5. Support rods 7 are movably placed on the top of the two support brackets 6. Two first conical blocks 8 are installed on the other side of the two mounting plates 5. Two adjusters are installed on the side walls of the two columns 1. The tops of the two adjusters are movably embedded between the four guide plates 4 and respectively contact the side walls of the two first conical blocks 8.

[0024] When constructing support for the pipeline foundation pit, firstly, the four guide plates 4 on one side of the two mounting plates 5 are embedded into the four guide sleeves 3. The four guide sleeves 3 provide guidance and support for the mounting plates 5. Then, the two ends of the support rod 7 are embedded into the two support brackets 6. Then, the two adjusters on the side walls of the two columns 1 are turned. Through the cooperation of the two adjusters with the two first conical blocks 8, the distance between the two mounting plates 5 and the two columns 1 is changed, so that the two ends of the support rod 7 are tightly fitted with the two mounting plates 5. Thus, the support rod 7 provides stable support for the top of the two columns 1.

[0025] In the specific implementation process, the two adjusters include two fixed threaded blocks 9, which are respectively installed on the side wall of the column 1. Two adjusting screws 10 are movably embedded in the two fixed threaded blocks 9. The top ends of the two adjusting screws 10 are movably connected to two second conical blocks 11, and the side walls of the two second conical blocks 11 are respectively in contact with the side walls of the two first conical blocks 8.

[0026] When adjusting the support strength of the support rod 7, the two adjusting screws 10 inside the two fixed threaded blocks 9 are turned, and the two adjusting screws 10 push the two second conical blocks 11 upward. When the inclined surface of the second conical block 11 contacts the inclined surface of the first conical block 8, it will push the mounting plate 5 and the guide plate 4 to move towards the center, thereby achieving the purpose of adjusting the support of the two columns 1.

[0027] In the specific implementation process, the extender includes two hinge seats 12, which are respectively installed below the side walls of the two columns 1. Two operating rods 13 are movably hinged in the two hinge seats 12, and the other end of the two operating rods 13 is hinged to a connecting plate 14.

[0028] The telescopic operating rod includes an internal threaded sleeve 15, which is fixedly embedded in the center of the support rod 7. A lead screw 16 is movably embedded in the internal threaded sleeve. A pressing block 17 is machined at the bottom end of the lead screw 16, and the pressing block 17 is in contact with the upper wall of the connecting plate 14.

[0029] After the support rod 7 is fixed, one end of each of the two operating rods 13 is hinged to the two hinge seats 12 via the shaft. Then, the screw 16 in the internal threaded sleeve 15 is turned until the pressing block 17 at the bottom of the screw 16 is connected to the connecting plate 14 between the two operating rods 13. The downward pressure is applied to the connecting plate 14. The downward pressure on the connecting plate 14 is converted into outward tension on the bottom of the two columns 1. This works in conjunction with the adjusting force generated by the top adjuster to form a taut and stable structure for the entire frame, effectively resisting lateral loads and preventing overturning.

[0030] In the specific implementation process, two limiting frames 18 are placed on both sides of the upper end of the support rod 7. The two ends of the two limiting frames 18 are connected to the two sides of the two support frames 6 by pins. The support frames 6 and the limiting frames 18 are all U-shaped.

[0031] The limiting bracket 18, which is fixed by the pin, can fix both ends of the support rod 7, making the placement and removal of the support rod 7 easy. Moreover, the upper and lower, left and right wrapping and limiting effectively prevents the support rod 7 from rolling, slipping or accidentally falling off during use, greatly improving the safety of operation.

[0032] 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. Construction protection framework for a pipe pit, comprising two uprights (1), characterised in that, Four support crossbars (2) are installed at both ends of the outer wall of the two columns (1), an adjusting support is installed above the side wall of the two columns (1), an extender is installed below the side wall of the two columns (1), and a telescopic operating rod is connected between the extender and the adjusting support. The adjusting support includes four guide sleeves (3), which are respectively installed on the upper sides of the two columns (1). Four guide plates (4) are movably embedded in the four guide sleeves (3). Two mounting plates (5) are installed on one end of the four guide plates (4). Two support brackets (6) are installed on one side of the two mounting plates (5). Support rods (7) are movably placed on the upper side of the two support brackets (6). Two first conical blocks (8) are installed on the other side of the two mounting plates (5). Two adjusters are installed on the side walls of the two columns (1). The tops of the two adjusters are movably embedded between the four guide plates (4) and respectively contact the side walls of the two first conical blocks (8).

2. A construction protection framework for a pipe pit according to claim 1, characterized in that, The two adjusters include two fixed threaded blocks (9), which are respectively installed on the side wall of the column (1). Two adjusting screws (10) are movably embedded in the two fixed threaded blocks (9). Two second conical blocks (11) are movably connected to the top of the two adjusting screws (10). The side walls of the two second conical blocks (11) are respectively in contact with the side walls of the two first conical blocks (8).

3. The construction protection framework of a pipe trench according to Claim 1, wherein The extender includes two hinge seats (12), which are respectively installed below the side walls of the two columns (1). Two operating rods (13) are movably hinged in the two hinge seats (12), and a connecting plate (14) is hinged to the other end of the two operating rods (13).

4. A construction protection framework for a pipe pit according to claim 3, characterized in that, The telescopic operating rod includes an internal threaded sleeve (15), which is fixedly embedded in the center of the support rod (7). A lead screw (16) is movably embedded in the internal threaded sleeve. A pressing block (17) is machined at the bottom end of the lead screw (16), and the pressing block (17) is in contact with the upper wall of the connecting plate (14).

5. The construction protection framework for pipeline foundation pits according to claim 1, characterized in that, Two limiting frames (18) are placed on both sides of the upper end of the support rod (7), and the two ends of the two limiting frames (18) are respectively connected to the two sides of the two support frames (6) by pins.

6. A construction protection framework for a pipe pit according to claim 5, characterized in that The support frame (6) and the limiting frame (18) are both U-shaped.

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