A prefabricated foundation pit inclined strut device

Abstract

The utility model discloses an assembly type foundation pit inclined strut device relates to building equipment field, and this device includes a plurality of assembly sections, and the first and last splicing of a plurality of assembly sections between in proper order forms splicing column, and the bottom end fixed mounting of splicing column has the support hinge base, and the top fixed mounting of splicing column has universal ball seat, and the middle portion mounting of splicing column has the adjusting hydraulic cylinder, and the both ends of adjusting hydraulic cylinder are installed respectively with first connecting seat and second connecting seat, and a plurality of shims are movably inserted between first connecting seat and second connecting seat, and the X axle positioning rod that penetrates first connecting seat is fixedly arranged on second connecting seat, and the avoidance slot that is suitable for X axle positioning rod is opened on shim, and the Y axle positioning screw is rotatably arranged on the both sides of second connecting seat, and the limiting slot that is suitable for Y axle positioning screw is opened on the side surface of shim and first connecting seat, and utilize a plurality of shims to support, and do not need adjusting hydraulic cylinder to keep output state all the time, avoid its pressure too big damage.

Description

Technical Field

[0001] This utility model relates to the field of building equipment, and in particular to a prefabricated foundation pit bracing device. Background Technology

[0002] During the excavation and construction of large foundation pits, in order to ensure the safety of personnel and equipment below the pit and to facilitate subsequent hardening work on the sidewalls of the pit, it is usually necessary to use formwork to protect the sidewalls of the pit. In addition, in order to fix the formwork used for protection, it is necessary to use diagonal bracing structures for support.

[0003] However, in actual operation, existing foundation pit bracing structures are usually supported by long steel pipes. In order to meet the different foundation pit depths and the structural characteristics of the foundation pit that can be used as fulcrums, the long steel pipes are usually spliced ​​in multiple sections. When in use, an appropriate number of splicing sections are selected according to the required length, and then hydraulic cylinders are installed in the splicing sections. The hydraulic cylinders further compensate for the short-range length. However, during the support process, the hydraulic cylinders are in a state of output force for a long time, which greatly affects the service life of the hydraulic cylinders. At the same time, once the bearing capacity of the support exceeds the maximum range of the hydraulic cylinders, there is a risk of cylinder explosion and tilting. Therefore, a prefabricated foundation pit bracing device is provided to solve the above problems. Utility Model Content

[0004] The purpose of this utility model is to provide a prefabricated foundation pit bracing device to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a prefabricated foundation pit bracing device, comprising multiple assembly sections, which are sequentially spliced ​​end-to-end to form a splicing column. A support hinge seat is fixedly installed at the bottom end of the splicing column, and a universal ball seat is fixedly installed at the top end of the splicing column. An adjusting hydraulic cylinder is installed in the middle of the splicing column. A first connecting seat is fixedly installed at the cylinder end of the adjusting hydraulic cylinder, and a second connecting seat is fixedly installed at the output end of the adjusting hydraulic cylinder. Multiple gaskets are movably inserted between the first connecting seat and the second connecting seat. An X-axis positioning rod penetrating the first connecting seat is fixedly provided on the second connecting seat. A clearance groove adapted to the X-axis positioning rod is opened on the gasket. Y-axis positioning screws are rotatably arranged on both sides of the second connecting seat. Limiting grooves adapted to the Y-axis positioning screws are opened on the sides of both the gasket and the first connecting seat.

[0006] Preferably, each end of the assembly section is fixedly welded with a splicing seat, and two adjacent splicing seats are fixedly installed together by bolts.

[0007] Preferably, the support hinge includes a fixed anchor and a swivel connector that is movably hinged to the fixed anchor, and the swivel connector is fixedly installed to the splicing seat by bolts.

[0008] Preferably, the universal ball seat includes a mounting plate and a ball seat body integrally formed on the outer wall of the mounting plate, wherein a ball head is rotatably disposed in the ball seat body, and a fixed seat is fixedly welded to the other end of the ball head.

[0009] Preferably, the rotary connector, the second connecting seat, and the splicing seat at one end of the assembly section are each provided with a centering shaft, and the fixed seat, the first connecting seat, and the splicing seat at the other end of the assembly section are each provided with a centering groove adapted to the centering shaft.

[0010] Preferably, the middle part of the gasket is provided with a clearance position that is adapted to the output shaft of the adjusting hydraulic cylinder.

[0011] Preferably, the inward-facing side of the gasket has a connecting cut, and the limiting groove is formed on the connecting cut. The connecting cuts of the two sets of opposite gaskets are staggered vertically so that the limiting grooves of the two adjacent sets of gaskets overlap.

[0012] Preferably, a limiting ring is fixedly welded to the end of the X-axis positioning rod, and the limiting ring is slidably disposed on the outer wall of the first connecting seat.

[0013] Preferably, a positioning groove is provided at the bottom of the first connecting seat, and a positioning ring is movably sleeved on the outer wall of the Y-axis positioning screw, and the positioning ring is movably inserted into the positioning groove.

[0014] The technical effects and advantages of this utility model are as follows: This prefabricated foundation pit bracing device continuously extends the output end of the hydraulic cylinder to support the template to a preset angle. At this time, the first connecting seat and the second connecting seat undergo relative displacement, and the shims are alternately inserted between the first and second connecting seats from both sides. This allows the shims on both sides to be assembled with the X-axis positioning rod on the same side through the clearance groove, and the limiting grooves on the shims on both sides coincide. Finally, the shims fill the gap between the first and second connecting seats. Then, the Y-axis positioning screw is rotated to enter the limiting groove, and then the nut on the outer wall of the Y-axis positioning screw is rotated to allow the positioning ring to enter the positioning groove, completing the assembly. The hydraulic cylinder is then depressurized, thus using multiple shims for support. This eliminates the need for the hydraulic cylinder to maintain a constant output state, avoiding damage due to excessive pressure. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the overall outer surface structure of this utility model; Figure 2 This is a schematic diagram of the support hinge and assembly section structure of this utility model; Figure 3 This is a schematic diagram of the universal ball joint and assembly joint structure of this utility model; Figure 4 This is a schematic diagram of the outer surface structure of the first connecting seat and the second connecting seat of this utility model; Figure 5 This is an exploded view of the internal structure of the first and second connecting seats of this utility model.

[0016] In the diagram: 1. Assembly section; 12. Splicing seat; 2. Support hinge seat; 21. Fixed anchor seat; 22. Rotary connector; 3. Universal ball seat; 31. Mounting plate; 32. Ball seat body; 33. Ball head; 34. Fixed seat; 4. Adjusting hydraulic cylinder; 42. First connecting seat; 43. Second connecting seat; 44. Gasket; 442. Clearance groove; 443. Clearance station; 444. Limiting groove; 45. X-axis positioning rod; 46. Limiting ring; 47. Y-axis positioning screw; 48. Positioning groove; 49. Positioning ring; 5. Centering shaft; 6. Centering groove. Detailed Implementation

[0017] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0018] This utility model provides, for example Figures 1 to 5 The prefabricated foundation pit bracing device shown includes multiple assembly sections 1, which are sequentially spliced ​​end to end to form a splicing column. A support hinge seat 2 is fixedly installed at the bottom of the splicing column, and a universal ball seat 3 is fixedly installed at the top of the splicing column. An adjusting hydraulic cylinder 4 is installed in the middle of the splicing column. A first connecting seat 42 is fixedly installed at the cylinder end of the adjusting hydraulic cylinder 4, and a second connecting seat 43 is fixedly installed at the output end of the adjusting hydraulic cylinder 4. Multiple shims 44 are movably inserted between the first connecting seat 42 and the second connecting seat 43. An X-axis positioning rod 45 is fixedly installed on the second connecting seat 43, penetrating the first connecting seat 42. The shims 44 are provided with clearance grooves 442 adapted to the X-axis positioning rod 45. Y-axis positioning screws 47 are rotatably installed on both sides of the second connecting seat 43. Limiting grooves 444 adapted to the Y-axis positioning screws 47 are provided on the sides of both the shims 44 and the first connecting seat 42.

[0019] The two ends of the assembly section 1 are respectively fixedly welded with splicing seats 12. Two adjacent splicing seats 12 are fixedly installed with bolts. The support hinge seat 2 includes a fixed anchor seat 21 and a rotating connector 22 that is movably hinged to the fixed anchor seat 21. The rotating connector 22 is fixedly installed with the splicing seat 12 with bolts. The support hinge seat 2 is anchored in the preset support position by screws. Then, the mounting plate 31 is fixed to the outer wall of the template that needs to be supported, thereby realizing support at any direction and angle at two points.

[0020] The universal ball seat 3 includes a mounting plate 31 and a ball seat body 32 integrally formed on the outer wall of the mounting plate 31. A ball head 33 is rotatably disposed in the ball seat body 32, and a fixed seat 34 is fixedly welded to the other end of the ball head 33.

[0021] A centering shaft 5 is provided on the rotating connector 22, the second connecting seat 43 and the splicing seat 12 at one end of the assembly section 1, and a centering groove 6 adapted to the centering shaft 5 is provided on the fixed seat 34, the first connecting seat 42 and the splicing seat 12 at the other end of the assembly section 1, so that the entire splicing column maintains a high degree of coaxiality during use and is safer.

[0022] The shim 44 has a clearance position 443 in the middle that is adapted to the output shaft of the regulating hydraulic cylinder 4, so as to avoid friction damage to the output shaft of the regulating hydraulic cylinder 4.

[0023] A connecting cut is provided on the inward side of the gasket 44, and a limiting groove 444 is opened on the connecting cut. The connecting cuts of the two sets of opposite gaskets 44 are staggered vertically so that the limiting grooves 444 of the two adjacent sets of gaskets 44 overlap. The alternating placement of the gaskets 44 can make the gaskets 44 have greater frictional resistance when moving in the reverse assembly direction, and the alternating placement is more uniform.

[0024] A limit ring 46 is fixedly welded to the end of the X-axis positioning rod 45. The limit ring 46 is slidably disposed on the outer wall of the first connecting seat 42 to ensure that the first connecting seat 42 and the second connecting seat 43 remain coaxial during the sliding process, thus avoiding misalignment and damage to the adjusting hydraulic cylinder 4.

[0025] The bottom of the first connecting seat 42 is provided with a positioning groove 48, and the outer wall of the Y-axis positioning screw 47 is movably sleeved with a positioning ring 49. The positioning ring 49 is movably inserted into the positioning groove 48, so that the Y-axis positioning screw 47 cannot rotate outward, thus playing a role in preventing reverse rotation.

[0026] Working principle: When the device is in use, the support hinge 2 is anchored to the preset support position by the screw, and then the mounting plate 31 is fixed to the outer wall of the template that needs to be supported. At this time, the corresponding number of assembly sections 1 are selected according to the straight distance between the two, and the total splicing length of multiple assembly sections 1 is less than the straight distance between the two. Then, multiple assembly sections 1 are spliced ​​together in sequence to form a splicing column, and a set of adjusting hydraulic cylinders 4 are installed between any two assembly sections 1 on the splicing column. The two ends of the adjusting hydraulic cylinders 4 are connected to the upper and lower assembly sections 1 through the first connecting seat 42 and the second connecting seat 43 respectively, thereby completing the overall assembly. At this point, by connecting the adjusting hydraulic cylinder 4 to the hydraulic power cylinder and installing a pressure sensor in the pipeline between them to monitor the pressure value of the adjusting hydraulic cylinder 4, the output end of the adjusting hydraulic cylinder 4 extends outward continuously, supporting the template to a preset angle. At this time, the first connecting seat 42 and the second connecting seat 43 undergo relative displacement, causing the X-axis positioning rod 45 to slide inside the first connecting seat 42. Then, the gaskets 44 are alternately inserted between the first connecting seat 42 and the second connecting seat 43 from both sides, so that the gaskets 44 on both sides are assembled with the X-axis positioning rod 45 on the same side through the clearance groove 442. Furthermore, the limiting grooves 444 on both sides of the gasket 44 overlap, ultimately filling the gap between the first connecting seat 42 and the second connecting seat 43 with the gasket 44. At this time, rotate the Y-axis positioning screw 47 to make it enter the limiting groove 444, and then rotate the nut on the outer wall of the Y-axis positioning screw 47 to make the positioning ring 49 enter the positioning groove 48, thereby preventing the Y-axis positioning screw 47 from rotating outward. At this time, the assembly is completed, and the pressure of the adjusting hydraulic cylinder 4 is released, thereby using multiple gaskets 44 for support. There is no need to adjust the hydraulic cylinder 4 to always maintain the output state, avoiding damage due to excessive pressure.

[0027] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A prefabricated foundation pit bracing device, comprising multiple assembly sections (1), characterized in that, Multiple assembly sections (1) are sequentially spliced ​​end to end to form a splicing column. A support hinge seat (2) is fixedly installed at the bottom end of the splicing column, and a universal ball seat (3) is fixedly installed at the top end of the splicing column. An adjusting hydraulic cylinder (4) is installed in the middle of the splicing column. A first connecting seat (42) is fixedly installed at the cylinder end of the adjusting hydraulic cylinder (4), and a second connecting seat (43) is fixedly installed at the output end of the adjusting hydraulic cylinder (4). The first connecting seat (42) and the second connecting seat (43) are movably inserted. The second connecting seat (43) is fixedly provided with an X-axis positioning rod (45) that passes through the first connecting seat (42). The gasket (44) is provided with a clearance groove (442) adapted to the X-axis positioning rod (45). Y-axis positioning screws (47) are rotatably provided on both sides of the second connecting seat (43). The gasket (44) and the side of the first connecting seat (42) are both provided with a limiting groove (444) adapted to the Y-axis positioning screw (47).

2. The prefabricated foundation pit bracing device according to claim 1, characterized in that, The two ends of the assembly section (1) are respectively fixedly welded with splicing seats (12), and two adjacent splicing seats (12) are fixedly installed by bolts.

3. The prefabricated foundation pit bracing device according to claim 2, characterized in that, The support hinge (2) includes a fixed anchor (21) and a rotating connector (22) that is movably hinged to the fixed anchor (21). The rotating connector (22) is fixedly installed to the splicing seat (12) by bolts.

4. The prefabricated foundation pit bracing device according to claim 3, characterized in that, The universal ball seat (3) includes a mounting plate (31) and a ball seat body (32) integrally formed on the outer wall of the mounting plate (31). A ball head (33) is rotatably disposed in the ball seat body (32), and a fixed seat (34) is fixedly welded to the other end of the ball head (33).

5. A prefabricated foundation pit bracing device according to claim 4, characterized in that, The rotary connector (22), the second connecting seat (43) and the splicing seat (12) at one end of the assembly section (1) are respectively provided with centering shafts (5), and the fixed seat (34), the first connecting seat (42) and the splicing seat (12) at the other end of the assembly section (1) are respectively provided with centering grooves (6) that are compatible with the centering shafts (5).

6. The prefabricated foundation pit bracing device according to claim 1, characterized in that, The middle part of the gasket (44) is provided with a clearance position (443) that is adapted to the output shaft of the regulating hydraulic cylinder (4).

7. A prefabricated foundation pit bracing device according to claim 6, characterized in that, The gasket (44) has a connecting cut on the inward side, and the limiting groove (444) is opened on the connecting cut. The connecting cuts of the two sets of opposite gaskets (44) are staggered vertically so that the limiting grooves (444) of the two adjacent sets of gaskets (44) overlap.

8. The prefabricated foundation pit bracing device according to claim 1, characterized in that, A limiting ring (46) is fixedly welded to the end of the X-axis positioning rod (45), and the limiting ring (46) is slidably disposed on the outer wall of the first connecting seat (42).

9. A prefabricated foundation pit bracing device according to claim 6, characterized in that, The bottom of the first connecting seat (42) is provided with a positioning groove (48), and the outer wall of the Y-axis positioning screw (47) is movably sleeved with a positioning ring (49), which is movably inserted into the positioning groove (48).

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