Steel square tube connecting and positioning structure

Abstract

The utility model discloses a steel square tube connecting and positioning structure which comprises a main steel square tube, the main steel square tube is vertically arranged, a first concave base is fixedly connected to the center of the outer wall of the main steel square tube, grooves are formed in the four faces of the corners of the top of the first concave base, the bottom of a steel sleeve is buckled with the grooves of the first concave base through protrusions, and the steel sleeve is fixedly connected with the main steel square tube. The four sides of the side wall of the steel sleeve are provided with square grooves, the square grooves of the steel sleeve are buckled with side steel square pipes, the side walls of the side steel square pipes are sleeved with first bolts, and the first bolts penetrate through the steel sleeve blocks to be in threaded connection with the screw holes of the main steel square pipe. A supporting system of a foundation pit is achieved, meanwhile, positioning work of installation is completed, the whole is more stable when connection is reinforced, the shape is not greatly changed in production, only punching work is added, a stable inner supporting structure is formed in construction, and the structure has the independent disassembly function and can be assembled according to the position of the foundation pit; meanwhile, the influence of mounting and dismounting of the inner support on foundation pit construction is reduced.

Description

Technical Field

[0001] This utility model relates to the field of steel square tube technology, specifically to a steel square tube connection and positioning structure. Background Technology

[0002] Square steel tubes are hollow, square-section steel materials made from hot-rolled or cold-rolled galvanized steel sheets, stainless steel sheets, etc., through cold bending and high-frequency welding. Square steel tubes can be used as structural frames or column components, offering higher strength than traditional aluminum profiles. Furthermore, in foundation pit construction, square steel tubes serve as a support system, used for bracing, corner bracing, and ring bracing to control lateral deformation of the pit. They form a spatial frame with horizontal supports, improving overall stability. They can also be used in conjunction with sheet piles and cast-in-place piles to enhance support rigidity. When using square steel tubes, connections are necessary, considering both production efficiency and the formation of a stable internal support structure during construction. Simultaneously, minimizing the impact of internal support installation and removal on foundation pit construction, and ensuring adequate installation and fixation on-site, are crucial. Therefore, we propose a square steel tube connection and positioning structure. Utility Model Content

[0003] The purpose of this utility model is to provide a steel square tube connection and positioning structure to solve the problems mentioned in the background art.

[0004] To achieve the above objectives, this utility model provides the following technical solution: a steel square tube connection and positioning structure, including a main steel square tube, which is vertically arranged. A first concave seat is fixedly connected to the center of the outer wall of the main steel square tube. The top corners of the first concave seat are provided with grooves on all four sides. The side wall of the main steel square tube is provided with screw holes, which are located at the top of the first concave seat. A steel sleeve block is fitted onto the outer wall of the main steel square tube, and the inner wall of the steel sleeve block is clearance-fitted with the outer wall of the main steel square tube. The upper and lower corners of the steel sleeve block are provided with protrusions. There are eight protrusions on the steel sleeve block, which are arranged symmetrically. The bottom of the steel sleeve is engaged with the groove of the first concave seat through the protrusions, and the engagement is clearance-fitted. The side wall of the steel sleeve is provided with square grooves on all four sides. Side steel square tubes are engaged with the square grooves of the steel sleeve. A first bolt is fitted onto the side wall of the side steel square tube, and the first bolt is threaded through the screw hole of the steel sleeve block and the main steel square tube.

[0005] Preferably, the outer wall of the main steel square tube is fitted with a second concave seat, and the inner wall of the second concave seat is in clearance fit with the outer wall of the main steel square tube. The bottom corners of the second concave seat are provided with grooves on all four sides. The grooves of the second concave seat are engaged with the protrusions of the steel sleeve, and are in clearance fit. The side wall of the second concave seat is provided with a second bolt, and the second bolt is threadedly connected to the bolt hole of the main steel square tube.

[0006] Preferably, the inner cavity of the main steel square tube is hollow, and the inner cavity of the side steel square tube is hollow.

[0007] Preferably, the main steel square tube, the side steel square tube, and the first concave seat are all made of Q235A steel.

[0008] Preferably, the steel sleeve block and the second concave seat are both made of Q235C steel.

[0009] Compared with the prior art, the beneficial effects of this utility model are as follows: the grooves opened at the corners of the first and second concave seats can be engaged with the protrusions of the steel sleeve block. Furthermore, the steel sleeve has slots on all four sides, allowing for selection of the number and installation of side steel square tubes according to construction requirements. The main steel square tube at the center can be fitted with side steel square tubes on all four sides, while the main steel square tubes at the corners can be fitted with side steel square tubes on two sides. The overall side steel square tube is right-angled, and flanges are provided at both ends of the side steel square tubes. The shape of the flanges allows for engagement with the slots on the steel sleeve. The side steel square tubes are connected at the flange on the other end, providing stable support within the foundation pit and maintaining overall fixation. This also reinforces the installation of the steel sleeve blocks, forming a support system for the foundation pit and completing the installation positioning. Strengthening the connection makes the overall structure more stable. The production process did not significantly alter the form; only drilling was added. During construction, a stable internal support structure is formed. This structure has an individual disassembly function, allowing for assembly according to the foundation pit location, while minimizing the impact of internal support installation and removal on foundation pit construction. Attached Figure Description

[0010] Figure 1 This is a schematic diagram of the structure of this utility model;

[0011] Figure 2 for Figure 1 Structural assembly drawing of the steel sleeve block;

[0012] Figure 3 for Figure 1 Detailed structural diagram of the central main steel square tube;

[0013] Figure 4 for Figure 1 Detailed structural diagram of the second concave seat;

[0014] Figure 5 for Figure 1 Detailed structural diagram of the steel sleeve block;

[0015] In the diagram: 1. Main steel square tube; 2. First concave seat; 3. Steel sleeve block; 4. Side steel square tube; 5. First bolt; 6. Second concave seat; 7. Second bolt. Detailed Implementation

[0016] 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.

[0017] Please see Figure 1-5 This utility model provides a steel square tube connection and positioning structure, including a main steel square tube 1, which is vertically arranged. A first concave seat 2 is fixedly connected to the center of the outer wall of the main steel square tube 1. The top corners of the first concave seat 2 are provided with grooves on all four sides. The side wall of the main steel square tube 1 is provided with screw holes, which are located on the top of the first concave seat 2. A steel sleeve block 3 is sleeved on the outer wall of the main steel square tube 1, and the inner wall of the steel sleeve block 3 is in clearance fit with the outer wall of the main steel square tube 1. The upper and lower corners of the steel sleeve block 3 are provided with protrusions. There are eight protrusions in the steel sleeve block 3, and they are arranged symmetrically. The bottom of the steel sleeve 3 is engaged with the groove of the first concave seat 2 through the protrusions, and it is a clearance fit. The four sides of the side wall of the steel sleeve 3 are provided with square grooves. The side steel square tube 4 is engaged with the square groove of the steel sleeve 3. The side wall of the side steel square tube 4 is fitted with the first bolt 5, and the first bolt 5 passes through the screw hole of the steel sleeve block 3 and is threadedly connected to the main steel square tube 1.

[0018] The outer wall of the main steel square tube 1 is fitted with a second concave seat 6, and the inner wall of the second concave seat 6 is in clearance fit with the outer wall of the main steel square tube 1. The bottom corners of the second concave seat 6 are provided with grooves on all four sides. The grooves of the second concave seat 6 are engaged with the protrusions of the steel sleeve 3, and are in clearance fit. The side wall of the second concave seat 6 is provided with a second bolt 7, and the second bolt 7 is threadedly connected to the bolt hole of the main steel square tube 1.

[0019] The inner cavity of the main steel square tube 1 is hollow, and the inner cavity of the side steel square tube 4 is hollow.

[0020] The main steel square tube 1, the side steel square tube 4, and the first concave seat 2 are all made of Q235A steel.

[0021] The steel sleeve 3 and the second concave seat 6 are both made of Q235C steel.

[0022] Working Principle: When using steel square tubes for foundation pit support, a main steel square tube 1 is pre-installed in the foundation pit. The main steel square tube 1 is moved by hoisting and vertically inserted into the foundation pit soil for stability. Then, a steel sleeve block 3 is fitted onto the outer wall of the main steel square tube 1. The steel sleeve block 3 is then engaged with the first concave seat 2 by sliding. The first concave seat 2 is fixed to the outer wall of the main steel square tube 1. Grooves are provided on all four sides of the top corner of the first concave seat 2. Eight protrusions are provided on the upper and lower corners of the steel sleeve block 3, arranged symmetrically. The bottom of the steel sleeve 3 engages with the grooves of the first concave seat 2 through the protrusions. Since the steel sleeve 3 has slots on all four sides, the side steel square tubes 4 can be moved and engaged by hoisting. The number and installation of the side steel square tubes 4 can be selected according to the construction requirements. Side steel square tubes can be installed on all four sides of the main steel square tube 1 in the center position. 4. The main steel square tube 1 located at the corner can be equipped with side steel square tubes 4 on both sides. The side steel square tubes 4 are right-angled. Flanges are provided at both ends of the side steel square tubes 4. The shape of the flanges can be used to engage with the slots of the steel sleeve 3. At the same time, the first bolts 5 are threaded through and connected to the bolt holes of the main steel square tube 1. The side steel square tubes 4 can be continued at the flanges at the other end of the side steel square tubes 4 to achieve stable support in the foundation pit and maintain the overall fixation. In order to reinforce the installation of the steel sleeve 3, a second concave seat 6 is continued to be fitted on the top of the main steel square tube 1. The bottom corners of the second concave seat 6 are provided with grooves on all four sides. The grooves of the second concave seat 6 engage with the protrusions of the steel sleeve 3. Then, the second bolts 7 are threaded through and connected to the bolt holes of the main steel square tube 1 to realize the support system of the foundation pit and complete the installation positioning work, making the overall connection more stable.

[0023] 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. A steel square tube connection and positioning structure, characterized in that: The system includes a main steel square tube (1), which is vertically arranged. A first concave seat (2) is fixedly connected to the center of the outer wall of the main steel square tube (1). The top corners of the first concave seat (2) are provided with grooves on all four sides. The side wall of the main steel square tube (1) is provided with screw holes, which are located on the top of the first concave seat (2). A steel sleeve block (3) is fitted onto the outer wall of the main steel square tube (1), and the inner wall of the steel sleeve block (3) is clearance-fitted with the outer wall of the main steel square tube (1). The upper and lower parts of the steel sleeve block (3) are... The corners are all provided with protrusions. The steel sleeve block (3) has eight protrusions, which are arranged symmetrically from top to bottom. The bottom of the steel sleeve block (3) is engaged with the groove of the first concave seat (2) through the protrusions, and it is a clearance fit. The four sides of the side wall of the steel sleeve block (3) are provided with square grooves. The side steel square tube (4) is engaged with the square groove of the steel sleeve block (3). The side wall of the side steel square tube (4) is fitted with a first bolt (5), and the first bolt (5) is threaded through the screw hole of the steel sleeve block (3) and the main steel square tube (1).

2. The steel square tube connection and positioning structure according to claim 1, characterized in that: The outer wall of the main steel square tube (1) is fitted with a second concave seat (6), and the inner wall of the second concave seat (6) is in clearance fit with the outer wall of the main steel square tube (1). The bottom corners of the second concave seat (6) are provided with grooves on all four sides. The grooves of the second concave seat (6) are engaged with the protrusions of the steel sleeve block (3) and are in clearance fit. The side wall of the second concave seat (6) is provided with a second bolt (7), and the second bolt (7) is threadedly connected to the screw hole of the main steel square tube (1).

3. The steel square tube connection and positioning structure according to claim 1, characterized in that: The inner cavity of the main steel square tube (1) is hollow, and the inner cavity of the side steel square tube (4) is hollow.

4. The steel square tube connection and positioning structure according to claim 1, characterized in that: The main steel square tube (1), the side steel square tube (4), and the first concave seat (2) are all made of Q235A steel.

5. The steel square tube connection and positioning structure according to claim 1, characterized in that: The steel sleeve block (3) and the second concave seat (6) are both made of Q235C steel.

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