Composite foundation pit supporting structure

Abstract

The utility model belongs to the field of composite foundation pit supporting structures, and particularly relates to a composite foundation pit supporting structure which comprises a base. Protective plates are arranged on the two sides of the top end of the base, and a detachable adjusting mechanism is arranged between the base and the protective plates; the detachable adjusting mechanism comprises a first groove, the first groove is formed in the position, close to the middle, of the top end of the base, one end of the interior of the first groove is fixedly connected with the rear end of a motor, and the front end of the motor is fixedly connected with the rear end of a first threaded rod. Through the design of the detachable adjusting mechanism, the function of conveniently adjusting and supporting composite foundation pits of different specifications and sizes is achieved, and the problems that an existing supporting structure body mainly depends on multiple sets of bolts for fixing and adjusting, the operation steps are extremely tedious during installation and supporting, and the supporting efficiency is high are solved. Therefore, the problems that the working efficiency is reduced and the mounting difficulty is high during mounting and supporting are solved, and the convenience during supporting and supporting is improved.

Description

Technical Field

[0001] The utility model relates to the field of composite foundation pit support structures, and specifically relates to a composite foundation pit support structure. Background Technique

[0002] A composite foundation pit support structure refers to a composite support system formed by soil nails, anchor rods and reinforced cement soil retaining walls, which can replace support systems such as excavation and bored piles, and also eliminates the surface layer of shotcrete support. When quality problems such as bifurcation occur in the vertical cement soil piles, remedial measures such as manual plastering and shotcreting with wire mesh can be taken, while typical support structures generally do not apply wire mesh and shotcrete on the reinforced cement soil retaining wall surface.

[0003] For the existing composite foundation pit support structure, specifically refer to a composite foundation pit support structure with the application number: CN202221049146.1, which includes retaining plates arranged on both side walls inside the foundation pit, support plates arranged on the retaining plates, and horizontal cross braces connecting the two side retaining plates. The support plates are arranged on the outer side walls of the retaining plates, and connecting plates are arranged at the ends of the horizontal cross braces. The connecting plates are fixedly connected to the support plates through bolts. The beneficial effects of the utility model are as follows: In this scheme, a composite foundation pit support structure is designed. A quadrilateral structure is formed between two adjacent horizontal cross braces and auxiliary support braces between the horizontal cross braces on the same side of the retaining plate inside the foundation pit. By connecting the horizontal cross braces and auxiliary support braces at their diagonal corners through L-shaped plates, the quadrilateral structure forms a rectangular structure, and the rectangular structure has stronger stability than the quadrilateral structure, ensuring the overall stability of the support structure;

[0004] The main body of the above support structure mainly relies on multiple groups of bolts for fixed adjustment. When installing and supporting, the operation steps are extremely cumbersome, resulting in a reduction in work efficiency during installation and support, and high installation difficulty. Therefore, a composite foundation pit support structure is proposed to solve the above problems. Content of the Utility Model

[0005] In order to make up for the deficiencies of the existing technology, the main body of the existing support structure mainly relies on multiple groups of bolts for fixed adjustment. When installing and supporting, the operation steps are extremely cumbersome, resulting in a reduction in work efficiency during installation and support, and high installation difficulty. The utility model proposes a composite foundation pit support structure.

[0006] The technical solution adopted by the utility model to solve its technical problems is: A composite foundation pit support structure described in the utility model includes a base; both sides of the top of the base are provided with guard plates, and a detachable adjustment mechanism is arranged between the base and the guard plates;

[0007] The detachable adjustment mechanism includes a first groove, which is opened at a position close to the middle of the top end of the base. One end inside the first groove is fixedly connected to the rear end of the motor, and the front end of the motor is fixedly connected to the rear end of the first threaded rod. The front end of the first threaded rod is inserted into the first fixing block, and the first threaded rod is rotatably connected to the first fixing block. Both ends of the outer side of the first threaded rod are sleeved with one end of the first moving bracket, and the first threaded rod is threadedly connected to the first moving bracket. The thread grooves at both ends of the outer side of the first threaded rod are designed in opposite directions.

[0008] Preferably, the other end of the first moving bracket is inserted with a first plug, and the first moving bracket is slidably connected to the first plug. The front end of the first plug is fixedly connected to the rear end of the guard plate.

[0009] Preferably, second moving brackets are arranged on both sides of the rear end of the guard plate, and the front end of the rear end of the guard plate is fixedly connected to the front end of a second plug. The rear end of the second plug is inserted into the inside of one end of the second moving bracket. Second grooves are opened on both sides of the top end of the base. The front and rear ends of the inner wall of the second groove are fixedly connected to a fixed rod. The outer side of the other end of the second moving bracket is sleeved outside the second groove, and the second moving bracket is slidably connected to the second groove.

[0010] Preferably, the front end of the rear end position of one section of the first moving bracket is fixedly connected to the front end of a second fixing block. A second threaded rod is inserted into the second fixing block, and the second fixing block is rotatably connected to the second threaded rod. The front end of the second threaded rod is fixedly connected to the rear end of one end of a rotating block. The front end of the second threaded rod is fixedly connected to one end of a first limiting block. The position of the outer side of the second threaded rod close to the side end of the second fixing block is fixedly connected to the inner wall of a second limiting block.

[0011] Preferably, both ends of the outer side of the second threaded rod are sleeved with one end of a third plug, and the second threaded rod is threadedly connected to the third plug. Slots are opened on the other end and both sides of the first moving bracket. The other end of the third plug is inserted into the slot inside.

[0012] Preferably, guide rods are arranged on both sides of the other end of the first moving bracket, and the side end of the first moving bracket is fixedly connected to the rear end of the guide rod. The third plug is sleeved outside the guide rod, and the third plug is slidably connected to the guide rod.

[0013] The beneficial effects of the present utility model are as follows:

[0014] 1. Through the structural design of the detachable adjustment mechanism, the utility model realizes the function of facilitating the adjustment and support of composite foundation pits of different specifications and sizes, solves the problem that the main body of the existing support structure mainly relies on multiple groups of bolts for fixed adjustment, and the operation steps are extremely cumbersome when installing and supporting, resulting in a reduction in work efficiency and high installation difficulty during installation and support, and improves the convenience during support;

[0015] 2. Through the structural design of the detachable adjustment mechanism, the utility model realizes the function of facilitating the removal and replacement of the protection plate, solves the problem that the main body of the existing support structure mainly relies on bolts for fixation when installing the protection plate, so that multiple groups of bolts need to be removed through the cooperation of removal tools during removal and replacement, resulting in a long time consumption and low work efficiency, and improves the convenience during removal. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the technical solutions in the embodiments of the present utility model or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the following drawings are only some embodiments of the present utility model, and those of ordinary skill in the art can obtain other drawings without creative efforts based on these drawings.

[0017] Figure 1 is a three-dimensional structural schematic diagram of the present utility model;

[0018] Figure 2 is a first partial sectional structural schematic diagram of the present utility model;

[0019] Figure 3 is a second partial sectional structural schematic diagram of the present utility model;

[0020] Figure 4 is for the present utility model Figure 1 is a schematic diagram of the enlarged structure at A in;

[0021] Figure 5 is for the present utility model Figure 3 is a schematic diagram of the enlarged structure at B in.

[0022] In the figure: 1, base; 2, protection plate; 10, first groove; 11, motor; 12, first threaded rod; 13, first fixing block; 14, first moving bracket; 15, first insertion block; 16, second groove; 17, fixed rod; 18, second moving bracket; 19, second insertion block; 20, second fixing block; 21, second threaded rod; 22, rotating block; 23, first limiting block; 24, second limiting block; 25, third insertion block; 26, slot; 27, guide rod. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0023] The technical solutions in the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without creative efforts shall fall within the protection scope of the present utility model.

[0024] Please refer to Figures 1 - 5 As shown in the figure, a composite foundation pit support structure includes a base 1; two sides of the top end of the base 1 are provided with guard plates 2, and a detachable adjustment mechanism is arranged between the base 1 and the guard plates 2;

[0025] The detachable adjustment mechanism includes a first groove 10, which is opened at a position close to the middle of the top end of the base 1. One end of the interior of the first groove 10 is welded to the rear end of the motor 11, and the front end of the motor 11 is welded to the rear end of the first threaded rod 12. The front end of the first threaded rod 12 is inserted into the first fixing block 13, and the first threaded rod 12 is rotatably connected to the first fixing block 13. The inner wall of the first fixing block 13 is circularly designed. Both ends of the outer side of the first threaded rod 12 are sleeved with one end of the first moving bracket 14, and the first threaded rod 12 is threadedly connected to the first moving bracket 14. The thread grooves at both ends of the outer side of the first threaded rod 12 are designed in opposite directions;

[0026] During operation, first place the base 1 at the bottom end of the foundation pit, and then start the motor 11 inside the first groove 10 to drive the first threaded rod 12 to rotate. When the first threaded rod 12 rotates, the front end of the first threaded rod 12 will rotate along the inside of the first fixing block 13. And when the first threaded rod 12 rotates, it drives the first moving brackets 14 on both sides to move outward simultaneously for supporting the composite foundation pit.

[0027] Furthermore, the other end of the first moving bracket 14 is inserted with a first plug 15, and the first moving bracket 14 is slidably connected to the first plug 15. The inner wall of the other end of the first moving bracket 14 and the first plug 15 are both square-shaped, and the front end of the first plug 15 is welded to the rear end of the guard plate 2;

[0028] During operation, when the first moving bracket 14 moves, it pushes the first plug 15 and the guard plate 2 to move outward simultaneously until the front end of the guard plate 2 abuts against the inner wall of the foundation pit, which is used for supporting the composite foundation pit.

[0029] Further, second moving brackets 18 are arranged on both sides of the rear end of the guard plate 2, and the rear end of the guard plate 2 is welded to the front end of the second moving brackets 18. The rear end of the second insertion block 19 is inserted into the interior of one end of the second moving brackets 18. The inner walls of the second insertion block 19 and one end of the second moving brackets 18 are both square in design. Second grooves 16 are formed on both sides of the top end of the base 1. The front and rear ends of the inner walls of the second grooves 16 are welded to the fixing rods 17. The outer side of the other end of the second moving brackets 18 is sleeved on the outer side of the second grooves 16, and the second moving brackets 18 are slidably connected to the second grooves 16. The inner wall of the other end of the second moving brackets 18 is circular in design;

[0030] During operation, when the guard plate 2 moves, it drives the second insertion block 19 and the second moving brackets 18 to move simultaneously, and one end of the second moving brackets 18 moves along the surface of the fixing rod 17 inside the second grooves 16 for supporting the composite foundation pit.

[0031] Further, the rear end position of one section of the first moving brackets 14 is welded to the front end of the second fixing block 20. A second threaded rod 21 is inserted into the second fixing block 20, and the second fixing block 20 is rotatably connected to the second threaded rod 21. The inner wall of the second fixing block 20 is circular in design. The front end of the second threaded rod 21 is welded to the rear end of one end of the rotating block 22. The front end of the second threaded rod 21 is welded to one end of the first limiting block 23. The outer side of the second threaded rod 21 near the side end of the second fixing block 20 is welded to the inner wall of the second limiting block 24;

[0032] During operation, rotate the rotating block 22 on one side of the other end of the first moving brackets 14 to drive the second threaded rod 21 and the first limiting block 23 to rotate synchronously. The second threaded rod 21 rotates along the interior of the second fixing block 20, and the first limiting block 23 on the outer side of the second threaded rod 21 and the second limiting block 24 can play a limiting role for removing the guard plate.

[0033] Further, one ends of third insertion blocks 25 are sleeved on both ends of the outer side of the second threaded rod 21, and the second threaded rod 21 is threadedly connected to the third insertion blocks 25. Slots 26 are formed on the other end and both sides of the first moving brackets 14. The other ends of the third insertion blocks 25 are inserted into the slots 26. The other ends of the third insertion blocks 25 and the slots 26 are both square in design;

[0034] During operation, the second threaded rod 21 rotates to drive the third insertion blocks 25 on both sides to move outward along the surface of the second threaded rod 21 until the other ends of the third insertion blocks 25 are disengaged from the slots 26 for removing the guard plate.

[0035] Furthermore, guide rods 27 are provided on both sides of the other end of the first movable bracket 14, and the side ends of the first movable bracket 14 are welded to the rear ends of the guide rods 27, the third plug block 25 is sleeved on the outside of the guide rods 27, and the third plug block 25 is slidably connected to the guide rods 27, and the guide rods 27 are circular in design;

[0036] During operation, when the third plug block 25 moves, the third plug block 25 moves along the surface of the guide rod 27 to remove the guard plate.

[0037] Working principle: When it is necessary to support the composite foundation pit, first place the base 1 to the bottom of the foundation pit, and then start the motor 11 inside the first groove 10 to drive the first threaded rod 12 to rotate. When the first threaded rod 12 rotates, the front end of the first threaded rod 12 will rotate along the inside of the first fixed block 13, and when the first threaded rod 12 rotates, it drives the first movable brackets 14 on both sides to move outward at the same time, and pushes the first plug block 15 and the guard plate 2 to move outward at the same time until the front end of the guard plate 2 is against the inner wall of the foundation pit, and when the guard plate 2 moves, it drives the second plug block 19 and the second movable bracket 18 to move at the same time, and one end of the second movable bracket 18 moves along the surface of the fixed rod 17 inside the second groove 16, which is used to support the composite foundation pit.

[0038] When the guard plate needs to be removed, the rotating block 22 on one side of the other end of the first movable bracket 14 is first rotated to drive the second threaded rod 21 and the first limit block 23 to rotate synchronously, and the second threaded rod 21 rotates along the inside of the second fixed block 20, and the first limit block 23 and the second limit block 24 on the outside of the second threaded rod 21 can play a limiting role. When the second threaded rod 21 rotates, it drives the third plug-in blocks 25 on both sides to move outward along the surface of the second threaded rod 21 until the other end of the third plug-in block 25 is out of the slot 26, and when the third plug-in block 25 moves, the third plug-in block 25 moves along the surface of the guide rod 27 at the same time, and then the guard plate 2 is pulled out upward, driving the first plug-in block 15 to move outward along the inside of the first movable bracket 14 until it is completely disengaged, and at the same time, the second plug-in blocks 19 on both sides of the rear end of the guard plate 2 move upward along the inside of the second movable bracket 18 until it is disengaged, so that the base 1 is separated from the guard plate 2 for removing the guard plate.

[0039] The above shows and describes the basic principle, main features and advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments, and the above embodiments and descriptions are only for explaining the principle of the utility model. Without departing from the spirit and scope of the utility model, the utility model may have various changes and improvements, and these changes and improvements fall within the scope of the utility model to be protected.

Claims

1. A composite foundation pit support structure, comprising a base (1); characterized in that: Guard plates (2) are arranged on both sides of the top of the base (1), and a detachable adjustment mechanism is arranged between the base (1) and the guard plates (2); The detachable adjustment mechanism comprises a first groove (10), wherein the first groove (10) is arranged at a top end of the base (1) near the middle position, an inner end of the first groove (10) is fixedly connected to the rear end of the motor (11), the front end of the motor (11) is fixedly connected to the rear end of the first threaded rod (12), the front end of the first threaded rod (12) is inserted into the first fixed block (13), and the first threaded rod (12) is rotatably connected to the first fixed block (13), one end of the first movable bracket (14) is sleeved at both ends of the outer side of the first threaded rod (12), and the first threaded rod (12) is threadedly connected to the first movable bracket (14), and the thread grooves at both ends of the outer side of the first threaded rod (12) are designed in opposite directions.

2. A composite foundation pit support structure according to claim 1, characterized in that: A first plug block (15) is inserted into the other end of the first movable bracket (14), and the first movable bracket (14) is slidably connected to the first plug block (15), and the front end of the first plug block (15) is fixedly connected to the rear end of the guard plate (2).

3. A composite foundation pit support structure according to claim 2, characterized in that: Second movable brackets (18) are arranged on both sides of the rear end of the guard plate (2), and the rear end of the guard plate (2) is fixedly connected to the front end of the second plug block (19), the rear end of the second plug block (19) is inserted into the interior of one end of the second movable bracket (18), and second grooves (16) are opened on both sides of the top of the base (1), the inner wall of the second groove (16) is fixedly connected to the front and rear ends of the fixing rod (17), the outer side of the other end of the second movable bracket (18) is sleeved on the outer side of the second groove (16), and the second movable bracket (18) is slidably connected to the second groove (16).

4. A composite foundation pit support structure according to claim 3, characterized in that: The rear end of one section of the first movable bracket (14) is fixedly connected to the front end of the second fixed block (20); a second threaded rod (21) is inserted inside the second fixed block (20); the second fixed block (20) is rotatably connected to the second threaded rod (21); the front end of the second threaded rod (21) is fixedly connected to the rear end of one end of the rotating block (22); the front end of the second threaded rod (21) is fixedly connected to one end of the first limiting block (23); and the outer side of the second threaded rod (21) is fixedly connected to the inner wall of the second limiting block (24) at a position close to the side end of the second fixed block (20).

5. A composite foundation pit supporting structure according to claim 4, characterized in that: One end of a third plug-in block (25) is sleeved on both ends of the outer side of the second threaded rod (21), and the second threaded rod (21) is threadedly connected to the third plug-in block (25); a slot (26) is provided at the other end of the first movable bracket (14) and at both sides of the first movable bracket (14); and the other end of the third plug-in block (25) is inserted into the slot (26).

6. A composite foundation pit support structure according to claim 5, characterized in that: Guide rods (27) are arranged on both sides of the other end of the first movable bracket (14), and the side ends of the first movable bracket (14) are fixedly connected to the rear ends of the guide rods (27); the third plug block (25) is sleeved on the outside of the guide rod (27), and the third plug block (25) is slidably connected to the guide rod (27).

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