A cantilever truss-based single-side formwork combined truss structure for deep foundation pit

Abstract

The utility model relates to the field of building construction technology discloses a deep foundation pit one -sided formwork combined truss structure based on cantilever truss, including several linear arrangement's truss body, several truss body one side common fixed connection has several reinforcing rods, still includes embedding mechanism, rotating mechanism, elastic clamping mechanism and elastic embedding mechanism, and embedding mechanism sets up in truss body one side, through the embedding of the clamping block inside the clamping groove, and through the action of first tension spring, drives the locating block to pass through the positioning groove, and this carries out the combination fixed to two truss body, makes after installing one truss body, need not to check the distance and can install the next truss body, simultaneously the connecting plate moves upward, and the convenient restriction rod moves upward and separates with the restriction hole, thereby removes the restriction to the limiting plate, under the action of second tension spring, the convenient positioning rod embedding positioning cylinder inside, thereby the rotation angle of rotating block is limited and fixed.

Description

Technical Field

[0001] This utility model relates to the field of building construction technology, and more specifically to a combined truss structure for single-sided formwork support in deep foundation pits based on cantilever trusses. Background Technology

[0002] In deep foundation pit construction, especially in areas with narrow sites, double-sided formwork requires a large operating space, which is difficult to meet construction requirements. Single-sided formwork is usually used. The single-sided formwork combined truss structure is a structural system used for wall formwork in building construction. It uses a combined truss as the main supporting component, which can provide stable support for the wall formwork during construction. The truss part is usually composed of steel sections or square steel tubes, including uprights, horizontal bars and diagonal bars, forming a stable triangular or rectangular structure.

[0003] Chinese patent CN222253097U discloses a construction device for an adjustable square steel truss combined formwork system for deep foundation pits. The device uses trapezoidal square steel truss supports for single-sided formwork. Compared with the steel triangular frame support system, the structure is more stable, has greater rigidity, occupies less space, and is more flexible in layout. The first wing nut is integrated with the square steel truss support through the steel pipe back rib and connectors, eliminating the need for additional tie rods. By adjusting the height of the steel pipe back rib, the verticality of the formwork can be controlled, enhancing flexibility and adaptability.

[0004] However, when installing several truss structures in a linear arrangement, the patent requires workers to first mark the distance on the formwork on one side. Due to the lack of a convenient mechanism to quickly confirm the distance between adjacent truss structures, workers need to mark the distance and install and fix several truss structures one by one, which makes the installation of adjacent truss structures inconvenient. Utility Model Content

[0005] In order to overcome the above-mentioned defects of the prior art, this utility model provides a single-sided formwork combined truss structure for deep foundation pits based on cantilever trusses, so as to solve the problem that there is no convenient mechanism for quickly confirming the distance between adjacent truss structures in the above-mentioned background technology, which leads to the need for workers to mark the distance and install and fix several truss structures one by one, thus making the installation of adjacent truss structures inconvenient.

[0006] This utility model provides the following technical solution: a combined truss structure for single-sided formwork support in deep foundation pits based on cantilever trusses, comprising several linearly arranged truss bodies, several reinforcing rods fixedly connected to one side of the several truss bodies, and further comprising an embedding mechanism, a rotating mechanism, an elastic locking mechanism, and an elastic embedding mechanism. The embedding mechanism is disposed on one side of the truss body, and the rotating mechanism is rotatably disposed on the other side of the truss body, with the embedding mechanism and the rotating mechanism being plugged in. The elastic locking mechanism is vertically movable and disposed at the top of the rotating mechanism, with one end of the elastic locking mechanism penetrating through the top and bottom of the rotating mechanism, and one end of the elastic locking mechanism being adapted to the interior of the embedding mechanism. The elastic embedding mechanism is horizontally movable and disposed at the top of the rotating mechanism, with the elastic embedding mechanism and the elastic locking mechanism being plugged in. A positioning element is disposed on one side of the truss body corresponding to the elastic locking mechanism, and an elastic band is fixedly connected to one side of the truss body near the lower part of the rotating mechanism.

[0007] Furthermore, the rotating mechanism includes a rotating block and a slot. A mounting base is fixedly connected to one side of the truss body, one end of the rotating block is rotatably connected to the inside of the mounting base, and a slot is provided on one side of the rotating block.

[0008] Furthermore, the embedding mechanism includes a snap-fit ​​block and a positioning groove. One side of the snap-fit ​​block is fixedly connected to one side of the truss body, and the top of the snap-fit ​​block has a positioning groove that extends through the top and bottom of the snap-fit ​​block.

[0009] Furthermore, the elastic locking mechanism includes a positioning block, a first tension spring, a connecting plate, and limiting rods. The positioning block is slidably connected to the top of the rotating block, and the bottom of the positioning block passes through the top of the rotating block and extends to the slot. The top of the positioning block is fixedly connected to the connecting plate. The first tension spring is sleeved on the outside of the positioning block. One end of the first tension spring is fixedly connected to the top of the rotating block, and the other end is fixedly connected to the bottom of the connecting plate. Two limiting rods are fixedly connected to one side of the connecting plate.

[0010] Furthermore, the elastic embedding mechanism includes a limiting plate, limiting holes, a support plate, a positioning rod, and a second tension spring. The bottom end of the support plate is fixedly connected to the top end of the rotating mechanism. The same positioning rod slides through both sides of the support plate. One end of the positioning rod is fixedly connected to the limiting plate. Two limiting holes are opened at the top end of the limiting plate. A second tension spring is sleeved on the outside of the positioning rod. One end of the second tension spring is fixedly connected to one side of the limiting plate, and the other end is fixedly connected to one side of the support plate.

[0011] Furthermore, the positioning component includes a positioning cylinder, one end of which is fixedly connected to one side of the truss body, and the positioning cylinder corresponds to the elastic embedding mechanism.

[0012] The technical effects and advantages of this utility model are as follows:

[0013] This invention uses a snap-fit ​​block embedded in a slot, and a first tension spring to drive a positioning block through the positioning slot, thereby combining and fixing two truss bodies. This allows the installation of one truss body without needing to check the distance before installing the next truss body. Simultaneously, the connecting plate moves upward, facilitating the upward movement of the limiting rod and its separation from the limiting hole, thus releasing the restriction on the limiting plate. The second tension spring facilitates the positioning rod's embedding into the positioning cylinder, thereby limiting and fixing the rotation angle of the rotating block. Furthermore, when the rotating block is parallel to the truss body, the elastic band allows it to be fitted around the outside of the rotating block, thus restricting the position of the rotating block and preventing it from rotating during truss body handling. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the structure of this utility model;

[0015] Figure 2 This is a schematic diagram of the rotating block of this utility model;

[0016] Figure 3 This utility model Figure 2 Schematic diagram of area A in the middle;

[0017] Figure 4 This is a cross-sectional view of the limiting plate of this utility model.

[0018] The attached figures are labeled as follows: 1. Truss body; 2. Reinforcing rod; 3. Mounting base; 4. Rotating block; 5. Slot; 6. Positioning block; 7. First tension spring; 8. Connecting plate; 9. Limiting rod; 10. Limiting plate; 11. Limiting hole; 12. Support plate; 13. Positioning rod; 14. Second tension spring; 15. Positioning cylinder; 16. Elastic band; 17. Snap-fit ​​block; 18. Positioning groove. Detailed Implementation

[0019] The present invention will be further described below with reference to specific embodiments. However, those skilled in the art should understand that the detailed description given here with reference to the accompanying drawings is for better explanation. The structure of the present invention may exceed the limited embodiments described herein. Some equivalent alternatives or common means will not be described in detail here, but they still fall within the protection scope of this application.

[0020] Appendix Figures 1-4 This is the preferred embodiment of the present invention, which is described below in conjunction with the appendix. Figures 1-4 The present invention will be further described below.

[0021] See attached document Figures 1-4A combined truss structure for single-sided formwork support in deep foundation pits based on cantilever trusses includes several linearly arranged truss bodies 1, several reinforcing rods 2 are fixedly connected to one side of several truss bodies 1, and also includes an embedding mechanism, a rotating mechanism, an elastic snap-fit ​​mechanism and an elastic embedding mechanism. The embedding mechanism is located on one side of the truss body 1, and the rotating mechanism is rotatably located on the other side of the truss body 1, and the embedding mechanism and the rotating mechanism are plugged into each other.

[0022] The elastic snap-fit ​​mechanism is vertically movable and is set at the top of the rotating mechanism. One end of the elastic snap-fit ​​mechanism passes through the top and bottom of the rotating mechanism. One end of the elastic snap-fit ​​mechanism is adapted to the inside of the embedding mechanism. The elastic embedding mechanism is horizontally movable and is set at the top of the rotating mechanism. The elastic embedding mechanism and the elastic snap-fit ​​mechanism are plugged together. A positioning part is set on one side of the truss body 1 corresponding to the elastic snap-fit ​​mechanism. An elastic band 16 is fixedly connected to one side of the truss body 1 near the bottom of the rotating mechanism.

[0023] When the rotating mechanism rotates to be perpendicular to one side of the truss body 1, the elastic locking mechanism is pulled upward. Then, one truss body 1 drives the embedding mechanism to embed into one side of the rotating mechanism of the other truss body 1. The elastic locking mechanism is released. Due to the elasticity, one end of the elastic locking mechanism passes into the interior of the embedding mechanism, thus completing the combination and fixation of the two truss bodies 1. This allows the installation of the second truss body 1 to be completed without checking the distance after the installation of one truss body 1. At the same time, when the elastic locking mechanism moves upward, it releases the restriction on the elastic embedding mechanism and releases the elasticity of the elastic embedding mechanism. Due to the elasticity, one end of the elastic embedding mechanism is driven into the positioning part, thus limiting and fixing the rotation angle of the rotating mechanism.

[0024] Specifically, the rotating mechanism includes a rotating block 4 and a slot 5. A mounting base 3 is fixedly connected to one side of the truss body 1, and one end of the rotating block 4 is rotatably connected to the inside of the mounting base 3. A slot 5 is provided on one side of the rotating block 4. When the rotating block 4 rotates to be parallel to one side of the truss body 1, the elastic band 16 is pulled and sleeved on the outside of the rotating block 4. Due to the tightening force of the elastic band 16, the position of the rotating block 4 is restricted, so that the rotating block 4 no longer rotates when the truss body 1 is moved.

[0025] Specifically, the embedding mechanism includes a snap-fit ​​block 17 and a positioning groove 18. One side of the snap-fit ​​block 17 is fixedly connected to one side of the truss body 1. The top of the snap-fit ​​block 17 is provided with a positioning groove 18, which passes through the top and bottom of the snap-fit ​​block 17. When one truss body 1 drives the snap-fit ​​block 17 to embed into the snap-fit ​​groove 5 on one side of another truss body 1, the combination of the two truss bodies 1 is completed.

[0026] Specifically, the elastic locking mechanism includes a positioning block 6, a first tension spring 7, a connecting plate 8, and a limiting rod 9. The positioning block 6 is slidably connected to the top of the rotating block 4. The bottom of the positioning block 6 passes through the top of the rotating block 4 and extends to the locking groove 5. The top of the positioning block 6 is fixedly connected to the connecting plate 8. The first tension spring 7 is sleeved on the outside of the positioning block 6. One end of the first tension spring 7 is fixedly connected to the top of the rotating block 4, and the other end is fixedly connected to the bottom of the connecting plate 8. Two limiting rods 9 are fixedly connected to one side of the connecting plate 8. When the rotating block 4 rotates inside the mounting base 3 to be perpendicular to one side of the truss body 1, the connecting plate 8 is pulled upward, causing the connecting plate 8 to drive the first tension spring 7 to stretch upward. Thus, the connecting plate 8 drives the bottom of the positioning block 6 to move to be flush with the top of the locking groove 5. This pulls the other truss body 1, causing the locking block 17 on one side of the other truss body 1 to be embedded in the locking groove 5, so that the positioning block 6 is aligned with the positioning groove 18. The connecting plate 8 is released. Due to the reaction force of the first tension spring 7, the positioning block 6 is driven to pass through the positioning groove 18, thereby combining and fixing the two truss bodies 1.

[0027] Specifically, the elastic embedding mechanism includes a limiting plate 10, limiting holes 11, a support plate 12, a positioning rod 13, and a second tension spring 14. The bottom end of the support plate 12 is fixedly connected to the top end of the rotating mechanism. The same positioning rod 13 slides through both sides of the support plate 12. One end of the positioning rod 13 is fixedly connected to the limiting plate 10. Two limiting holes 11 are opened at the top end of the limiting plate 10. The second tension spring 14 is sleeved on the outside of the positioning rod 13. One end of the second tension spring 14 is fixedly connected to one side of the limiting plate 10, and the other end is fixedly connected to one side of the support plate 12. When the connecting plate 8 moves upward, it facilitates the upward movement of the limiting rod 9 and its separation from the limiting holes 11, thereby releasing the restriction on the limiting plate 10. Under the reaction force of the second tension spring 14, the positioning rod 13 is driven to embed into the positioning component.

[0028] Specifically, the positioning component includes a positioning cylinder 15, one end of which is fixedly connected to one side of the truss body 1, and the positioning cylinder 15 corresponds to the elastic embedding mechanism; when the positioning rod 13 is embedded inside the positioning cylinder 15, the rotation angle of the rotating block 4 is restricted and fixed, so that the rotating block 4 is always perpendicular to one side of the truss body 1.

[0029] Working principle and usage process of this utility model:

[0030] In use, one truss body 1 is installed and fixed on one side of the single-sided formwork. When the rotating block 4 rotates inside the mounting base 3 to be perpendicular to one side of the truss body 1, the connecting plate 8 is pulled upward, causing the connecting plate 8 to drive the first tension spring 7 to stretch upward. This causes the connecting plate 8 to move the bottom end of the positioning block 6 to be flush with the top end of the slot 5. The other truss body 1 is then pulled, causing the other truss body 1 to drive the locking block 17 on one side to embed into the slot 5, aligning the positioning block 6 with the positioning groove 18. The connecting plate 8 is then released. Due to the reaction force of the first tension spring 7, the positioning block 6 is driven to pass through the positioning groove 18, thus combining and fixing the two truss bodies 1 together. After one truss body 1 is installed, the next truss body 1 can be installed without checking the distance. At the same time, when the connecting plate 8 moves upward, it facilitates the upward movement of the limiting rod 9 and its separation from the limiting hole 11, thereby releasing the restriction on the limiting plate 10. Under the reaction force of the second tension spring 14, the positioning rod 13 is driven to embed into the positioning cylinder 15, thereby limiting and fixing the rotation angle of the rotating block 4. In addition, when the rotating block 4 rotates to be parallel to one side of the truss body 1, the elastic band 16 is pulled and sleeved on the outside of the rotating block 4. Due to the tightening force of the elastic band 16, the position of the rotating block 4 is restricted, so that the rotating block 4 no longer rotates when the truss body 1 is transported.

[0031] The above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model in any other way. Any person skilled in the art may make changes or modifications to the above-disclosed technical content to create equivalent embodiments. However, any simple modifications, equivalent changes, and modifications made to the above embodiments based on the technical essence of this utility model without departing from its technical solution shall still fall within the protection scope of this utility model.

Claims

1. A combined truss structure for single-sided formwork support in deep foundation pits based on cantilever trusses, characterized in that: The system includes several linearly arranged truss bodies (1), several reinforcing rods (2) are fixedly connected to one side of several truss bodies (1), and also includes an embedding mechanism, a rotating mechanism, an elastic snap-fit ​​mechanism and an elastic embedding mechanism. The embedding mechanism is set on one side of the truss body (1), the rotating mechanism is rotatably set on the other side of the truss body (1), and the embedding mechanism and the rotating mechanism are plugged in. The elastic snap-fit ​​mechanism is set at the top of the rotating mechanism and can move vertically. One end of the elastic snap-fit ​​mechanism passes through the top and bottom of the rotating mechanism. One end of the elastic snap-fit ​​mechanism is adapted to the inside of the embedding mechanism. The elastic embedding mechanism is set at the top of the rotating mechanism and can move horizontally. The elastic embedding mechanism and the elastic snap-fit ​​mechanism are plugged in. A positioning element is set on one side of the truss body (1) corresponding to the elastic snap-fit ​​mechanism. An elastic band (16) is fixedly connected on one side of the truss body (1) near the bottom of the rotating mechanism.

2. The deep foundation pit single-sided formwork combined truss structure based on cantilever truss according to claim 1, characterized in that: The rotating mechanism includes a rotating block (4) and a slot (5). A mounting base (3) is fixedly connected to one side of the truss body (1). One end of the rotating block (4) is rotatably connected to the inside of the mounting base (3). A slot (5) is provided on one side of the rotating block (4).

3. The deep foundation pit single-sided formwork combined truss structure based on cantilever truss according to claim 1, characterized in that: The embedding mechanism includes a snap-fit ​​block (17) and a positioning groove (18). One side of the snap-fit ​​block (17) is fixedly connected to one side of the truss body (1). The top of the snap-fit ​​block (17) is provided with a positioning groove (18), which passes through the top and bottom of the snap-fit ​​block (17).

4. The deep foundation pit single-sided formwork combined truss structure based on cantilever truss according to claim 2, characterized in that: The elastic snap-fit ​​mechanism includes a positioning block (6), a first tension spring (7), a connecting plate (8), and a limiting rod (9). The positioning block (6) is slidably connected to the top of the rotating block (4). The bottom of the positioning block (6) passes through the top of the rotating block (4) and extends to the slot (5). The top of the positioning block (6) is fixedly connected to the connecting plate (8). The first tension spring (7) is sleeved on the outside of the positioning block (6). One end of the first tension spring (7) is fixedly connected to the top of the rotating block (4), and the other end is fixedly connected to the bottom of the connecting plate (8). Two limiting rods (9) are fixedly connected to one side of the connecting plate (8).

5. The deep foundation pit single-sided formwork combined truss structure based on cantilever truss according to claim 1, characterized in that: The elastic embedding mechanism includes a limiting plate (10), a limiting hole (11), a support plate (12), a positioning rod (13), and a second tension spring (14). The bottom end of the support plate (12) is fixedly connected to the top end of the rotating mechanism. The same positioning rod (13) slides through both sides of the support plate (12). One end of the positioning rod (13) is fixedly connected to the limiting plate (10). Two limiting holes (11) are opened at the top end of the limiting plate (10). The second tension spring (14) is sleeved on the outside of the positioning rod (13). One end of the second tension spring (14) is fixedly connected to one side of the limiting plate (10), and the other end is fixedly connected to one side of the support plate (12).

6. The deep foundation pit single-sided formwork combined truss structure based on cantilever truss according to claim 1, characterized in that: The positioning component includes a positioning cylinder (15), one end of which is fixedly connected to one side of the truss body (1), and the positioning cylinder (15) corresponds to the elastic embedding mechanism.

Images