Deep foundation pit steel support

Abstract

The utility model relates to a deep foundation pit steel support which comprises two L-shaped blocks, transverse blocks of the two L-shaped blocks are located on the left sides of vertical blocks and located at the far ends of the two vertical blocks, the right ends of the two L-shaped blocks are hinged to each other, first sliding grooves are formed in the adjacent end faces of the transverse blocks of the two L-shaped blocks respectively, and L-shaped rods are arranged in the first sliding grooves. Vertical rod parts of the two L-shaped rods are located at the left end of the transverse rod and face the outer side of the first sliding groove, a rotating shaft is arranged on the adjacent end face of a vertical block of each L-shaped block, and the rotating shafts rotate around the axis to drive the L-shaped rods to slide left and right along the first sliding groove; when the two rotating blocks are arranged on the two sides of the connecting part of the two mutually-spliced supporting plates correspondingly, the vertical rods of the L-shaped rods can be arranged in the bending grooves. According to the utility model, the locking structure of the existing support plate is improved from the whole into the hinging of the L-shaped blocks at the front part and the rear part, and the locking structure can be arranged at the connecting point only by rotating the front L-shaped block and the rear L-shaped block without inserting from the end part of the connecting part during mounting, so that the connecting speed of the support plate is greatly improved, and the mounting difficulty is reduced.

Description

Technical Field

[0001] This utility model relates to the field of building construction, specifically a steel support for deep foundation pits. Background Technology

[0002] During the construction of deep foundation pit support plates, the poor flatness of the pit wall can easily lead to poor overall integrity of the support plates after installation, resulting in gaps in the fit. Misalignment of the support plates can also reduce the protective capacity. To solve the above problems, the deep foundation pit prestressed composite steel support disclosed in CN218540720U uses a locking structure to connect adjacent support plates, which can effectively avoid misalignment of the support plates. However, this solution still has the following defects in actual use: the connection and installation of the locking structure body and the support plate connection part is relatively troublesome. It is necessary to insert the locking structure from top to bottom through the end of the connection part. When the support plate installation height is high or the support plate body is large, the support rod needs to be moved significantly to complete the installation, which is time-consuming and labor-intensive. Utility Model Content

[0003] In order to overcome the shortcomings of the existing technology, this utility model adopts a deep foundation pit steel support, which solves the problem of the difficulty in installing the existing foundation pit support plate connection structure.

[0004] The technical solution is a deep foundation pit steel support, including a support plate acting on the inner wall of the foundation pit, a locking structure connecting adjacent support plates, and a strut structure assembled between the left and right locking structures. The strut structure has two struts, one at the front and one at the back. The support plate includes a plate body, the two ends of which are bent to form connecting parts. The groove formed by bending the connecting parts is a bending groove. Adjacent connecting parts are spliced ​​to form a T-shape. The locking structure includes two symmetrically placed L-shaped blocks. The horizontal blocks of the two L-shaped blocks are located to the left of the vertical blocks and are both located at the far ends of the two vertical blocks. The right ends of the two L-shaped blocks are hinged to each other. Next, when the two L-shaped blocks rotate around the hinge, the two vertical blocks can fit together or separate. The adjacent end faces of the two L-shaped blocks are respectively provided with first sliding grooves in the left and right directions. An L-shaped rod is set in the first sliding groove. When the horizontal part of the L-shaped rod is placed in the first sliding groove, it can slide left and right. The vertical part of the two L-shaped rods is located at the left end of the horizontal rod and faces the outside of the first sliding groove. The adjacent end face of each vertical block of the L-shaped block is respectively provided with a rotating shaft. The rotating shaft can drive the L-shaped rod to slide left and right along the first sliding groove when it rotates around the axis. When the two rotating blocks are respectively placed on both sides of the connection part of the two spliced ​​support plates, the vertical part of the L-shaped rod can be placed in the bending groove.

[0005] The cross-section of the rotating shaft is semi-circular. When the two L-shaped blocks are attached vertically, the two rotating shafts can form a complete cylindrical block. A second sliding groove is provided on the left side of the outer edge of each rotating shaft. The second sliding groove is a wavy groove. A sliding rod is fixed at the right end of each L-shaped rod. The sliding rod is placed in the second sliding groove. When the rotating shaft rotates, it can drive the L-shaped rod to move left and right through the sliding rod.

[0006] Each L-shaped block has an arc-shaped groove on one of its adjacent end faces. The rotating shaft is placed in the arc-shaped groove on the corresponding side. A slide rail with a T-shaped cross-section is fixed in each arc-shaped groove. A T-shaped slide groove is opened on the right side of the outer edge of each rotating shaft, and the slide rail is placed in the T-shaped slide groove.

[0007] The strut structure includes a support rod, and two L-shaped blocks with support plates fixed to their left ends respectively. The right end face of the support plate is hinged to the support rod on the corresponding side.

[0008] This utility model has the following advantages over the prior art:

[0009] 1. This utility model improves the locking structure of the existing support plate from a whole to two L-shaped blocks that are hinged together. During installation, there is no need to insert the locking structure from the end of the connecting part. Simply rotate the front and rear L-shaped blocks to place the locking structure at the connection point, which greatly improves the connection speed of the support plate and reduces the installation difficulty.

[0010] 2. The rotating shaft with two semi-circular cross sections can lock the two L-shaped blocks in two T-shaped grooves through the slide rails. At the same time, the L-shaped rod is driven by the wave-shaped second slide groove to lock the connection. The operation is simple and efficient, greatly improving the installation efficiency. Attached Figure Description

[0011] Figure 1 This is the front view of the present invention.

[0012] Figure 2 This is a front sectional view of the locking structure and support plate of this utility model.

[0013] Figure 3 This is a front sectional view of the locking structure of this utility model after it has been opened.

[0014] Figure 4 This is a part drawing of the rotating shaft of this utility model. Detailed Implementation

[0015] The specific embodiments of this utility model will be further described in detail below with reference to the accompanying drawings.

[0016] Depend on Figures 1 to 4The present invention includes a support plate 1 acting on the inner wall of a foundation pit, a locking structure 2 connecting adjacent support plates, and a strut structure 3 assembled between the left and right locking structures. The strut structure 3 has two struts, one at the front and one at the back. The support plate 1 includes a plate body 4, the two ends of which are bent to form connecting parts 5. The groove formed by bending the connecting parts is a bending groove 6. Adjacent connecting parts are spliced ​​to form a T-shape. The locking structure 2 includes two symmetrically placed L-shaped blocks 7. The horizontal blocks of the two L-shaped blocks 7 are located to the left of the vertical blocks and are both located at the far ends of the two vertical blocks. The right ends of the two L-shaped blocks 7 are hinged to each other. When rotating, the two vertical blocks can fit together or separate. The two L-shaped blocks 7 have first sliding grooves 8 in the left and right directions on their adjacent end faces. L-shaped rods 9 are installed in the first sliding grooves 8. When the horizontal part of the L-shaped rods 9 is placed in the first sliding grooves 8, it can slide left and right. The vertical parts of the two L-shaped rods 9 are located at the left end of the horizontal part and face the outside of the first sliding grooves 8. Each L-shaped block 7 has a rotating shaft 11 on its adjacent end face. The rotating shaft 11 can drive the L-shaped rods 9 to slide left and right along the first sliding grooves 8 when it rotates around the axis. When the two rotating blocks 7 are placed on both sides of the connecting part 5 of the two spliced ​​support plates 1, the vertical part of the L-shaped rods 9 can be placed in the bending groove 6.

[0017] The cross-section of the rotating shaft 11 is semi-circular. When the two L-shaped blocks 7 are attached vertically, the two rotating shafts 11 can form a complete cylindrical block. A second sliding groove 12 is provided on the left side of the outer edge of each rotating shaft 11. The second sliding groove 12 is a wavy groove. A sliding rod 13 is fixed at the right end of each L-shaped rod 9. The sliding rod 13 is placed in the second sliding groove 12. When the rotating shaft 11 rotates, it can drive the L-shaped rod 9 to move left and right through the sliding rod 13.

[0018] Each L-shaped block 7 has an arc-shaped groove 14 on one of its adjacent end faces. The rotating shaft 11 is placed in the arc-shaped groove 14 on the corresponding side. A slide rail 15 with a T-shaped cross section is fixed in each arc-shaped groove 14. A T-shaped slide groove 16 is provided on the right side of the outer edge of each rotating shaft 11, and the slide rail 15 is placed in the T-shaped slide groove 16.

[0019] The strut structure includes a support rod 17, and two L-shaped blocks 7 with support plates 18 fixed to their left ends respectively. The right end face of the support plate 18 is hinged to the support rod 17 on the corresponding side.

[0020] In use, this utility model first fixes the two support plates 1 to be spliced ​​to the side wall of the pit. Then, the two L-shaped blocks 7 are rotated and separated along the hinge, so that the two rotating blocks 7 are respectively placed on both sides of the connecting part 5 of the two support plates 1 to be spliced. Then, the two L-shaped blocks 7 are rotated towards each other until the vertical blocks of the L-shaped blocks 7 are in contact. At this time, the vertical rod of the L-shaped rod 9 is placed in the bending groove 6, and the two rotating shafts 11 can form a complete cylindrical block. Rotating the two rotating shafts 11, each slide rail 15 is placed in one of the two T-shaped slide grooves 16, and the second slide groove is... 12 drives the slide bar 13 to move to the rightmost position to lock the connecting part 5. At this time, under the interference of the T-shaped slide groove 16, the two L-shaped blocks cannot be separated, thus completing the installation of the locking structure 2 and the support plate 1. When it is necessary to disassemble the locking structure 2 and the support plate 1, simply rotate the two rotating shafts 11 to the front and rear symmetrical positions, so that each slide rail 15 is placed in only one of the T-shaped slide grooves 16, and the slide bar 13 drives the vertical rod of the L-shaped rod 9 to move to the left side, so that the two L-shaped blocks 7 can rotate freely, and the locking structure 2 and the support plate 1 can be easily separated.

[0021] This utility model improves the locking structure of the existing support plate 1 from a whole to two L-shaped blocks 7 connected by hinges. During installation, there is no need to insert the locking structure 2 from the end of the connecting part 5. Simply rotate the front and rear L-shaped blocks 7 to place the locking structure 2 at the connection point, which greatly improves the connection speed of the support plate 1 and reduces the installation difficulty. The rotating shaft 11 with two semi-circular cross sections can be placed in two T-shaped slide grooves 16 through the slide rail 15 to lock the two L-shaped blocks 7. The operation is simple and efficient, which greatly improves the installation efficiency.

Claims

1. A deep foundation pit steel support, comprising a support plate (1) acting on the inner wall of the foundation pit, a locking structure (2) connected between adjacent support plates, and a strut structure (3) assembled between the left and right locking structures, the strut structure (3) being provided with two front and rear struts; the support plate (1) comprises a plate body (4), both ends of the plate body (4) are bent to form a connecting portion (5), a groove formed after the connecting portion is bent is a bent groove (6), and adjacent connecting portions are spliced to form a T-shaped structure; the locking structure (2) comprises two symmetrically placed L-shaped blocks (7) arranged in an upper and lower manner, characterized in that: The horizontal blocks of the two L-shaped blocks (7) are located at the left side of the vertical blocks and at the distal ends of the two vertical blocks, the right ends of the two L-shaped blocks (7) are hingedly connected to each other, the two vertical blocks can be attached or separated when the two L-shaped blocks (7) rotate around the hinge, the end faces adjacent to the horizontal blocks of the two L-shaped blocks (7) are respectively provided with left-right first sliding grooves (8), L-shaped rods (9) are arranged in the first sliding grooves (8), the horizontal rod portions of the two L-shaped rods (9) are located at the left ends of the horizontal rod portions and face the outside of the first sliding grooves (8), the end faces adjacent to the vertical blocks of each L-shaped block (7) are respectively provided with a rotating shaft (11), the rotating shaft (11) can drive the L-shaped rod (9) to slide left and right along the first sliding groove (8) when the rotating shaft (11) rotates around the axis, and the vertical rod portions of the L-shaped rods (9) can be arranged in the bent grooves (6) when the two L-shaped blocks (7) are arranged at the positions on the two sides of the connecting portions (5) of the two support plates (1) that are connected to each other.

2. The deep foundation pit steel support according to claim 1, characterized in that, The rotating shaft (11) has a semicircular cross section, the two rotating shafts (11) can form a complete cylindrical block when the vertical blocks of the two L-shaped blocks (7) are attached, a second sliding groove (12) is formed in the left side of the outer edge face of each rotating shaft (11), the second sliding groove (12) is a wave-shaped groove, a sliding rod (13) is fixed to the right end of each L-shaped rod (9), and the sliding rod (13) is arranged in the second sliding groove (12), the L-shaped rod (9) can be driven to move left and right by the sliding rod (13) when the rotating shaft (11) rotates.

3. The deep foundation pit steel support according to claim 1, characterized in that, An arc-shaped groove (14) is formed in the end face adjacent to each L-shaped block (7), the rotating shaft (11) is arranged in the arc-shaped groove (14) on the corresponding side, a sliding rail (15) with a T-shaped cross section is fixed in each arc-shaped groove (14), and a T-shaped sliding groove (16) is formed in the right side of the outer edge face of each rotating shaft (11), the sliding rail (15) is arranged in the T-shaped sliding groove (16).

4. The deep foundation pit steel support according to claim 1, characterized in that, The support rod structure comprises a support rod (17), and the left ends of the two L-shaped blocks (7) are respectively fixed with support plates (18), and the right end faces of the support plates (18) are hingedly connected to the support rods (17) on the corresponding sides.

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