Steel structure foundation pit support convenient to mount and dismount

Abstract

The utility model belongs to the technical field of foundation pit supports, and particularly relates to a steel structure foundation pit support convenient to mount and demount, which comprises a male end, a female end for expansion is arranged on one side of the male end, the male end and the female end are different in length but identical in structure, limiting rings are arranged at one end of the male end and one end of the female end, and square grooves are formed in the centers of the limiting rings. The other end of the male end and the other end of the female end are provided with square blocks, the square blocks and the square grooves are the same in size, fixing holes are formed in the square blocks and the limiting rings, fixing rods are arranged in the fixing holes, and baffles are arranged at the positions, outside the male end and the female end, of one ends of the fixing rods in a sliding mode. The device can be connected end to end through the square grooves, the square blocks and the fixing rods, the connecting efficiency is improved, so that the device is convenient to disassemble and assemble, the bending degree of the support can be visually observed from the outer surface of the foundation pit support by arranging reinforcing ribs and observation strips, and therefore the foundation pit support can be conveniently detected.

Description

Technical Field

[0001] The utility model belongs to the technical field of foundation pit supports, and in particular relates to a steel structure foundation pit support which is easy to install and disassemble. Background Art

[0002] The foundation pit support is a structure used to support and protect the foundation pit wall during construction. It is designed according to the shape, size and soil conditions of the foundation pit to ensure that the support points are arranged reasonably and evenly and can withstand the expected load. The foundation pit support protects the side walls of the foundation pit and the surrounding environment through support and reinforcement, ensuring the safety of underground structure construction and the surrounding environment of the foundation pit. The installation and connection of the foundation pit support is a key step to ensure the safety of foundation pit construction.

[0003] Patent application number CN219733014U discloses a foundation pit support with an anti-dumping structure, comprising a base plate, one side of which is fixedly connected to an extension frame, and the extension frames are symmetrically arranged; a connecting rod, which is provided with multiple groups at one end of the left extension frame; a sleeve, which is installed on the left side of the connecting rod, and the outer side of the sleeve is provided with multiple rows of first positioning holes, a single row of first positioning holes is provided with three groups, and the first positioning holes are distributed in a circular arrangement at 90° intervals; a splicing rod, which is installed on the upper end of the right extension frame, and the front end of the splicing rod is provided with multiple groups of second positioning holes. The utility model overcomes the shortcomings of the existing technology. The device can be quickly assembled by means of sleeve rotation, and the assembly angle can be adjusted to a certain extent, thereby improving the flexibility of use. In addition, the device can support both sides of the support through the support seat, and fill the interior of the support seat by pouring concrete, effectively ensuring the stability of the installation.

[0004] In the existing technology, by setting a sleeve, a support seat and a bracket, the bracket is not easily tilted by external collisions or environmental factors during vertical installation. However, the overall use still has the following problems: First, when the existing technology supports and protects a large foundation pit span, it is necessary to lengthen the foundation pit bracket. When lengthening the foundation pit bracket, it is difficult to disassemble and assemble through traditional bolt connections, resulting in low efficiency; secondly, the existing technology has low support strength for the foundation pit, and the degree of bending of the foundation pit bracket cannot be intuitively observed, resulting in the inability to control the quality of the foundation pit bracket well. Utility Model Content

[0005] In order to overcome the deficiencies of the prior art, the utility model provides a steel structure foundation pit support that is easy to install and disassemble. By arranging a male end and a female end, the end-to-end connection can be achieved through a square groove, a square block and a fixing rod, thereby improving the connection efficiency, thereby making the device easy to disassemble and install. By arranging reinforcing ribs and observation strips, the degree of bending of the support can be intuitively observed from the outer surface of the foundation pit support, thereby providing reliable guarantee for the quality.

[0006] In order to achieve the above-mentioned purpose, the utility model provides the following technical solutions: a steel structure foundation pit bracket that is easy to install and disassemble, comprising a male end, a female end for expansion is provided on one side of the male end, the male end and the female end are different in length but have the same structure, one end of the male end and the female end are both provided with a limiting ring, the center of the limiting ring is provided with a square groove, the other end of the male end and the female end is provided with a square block, the square block and the square groove are snap-fitted, the inside of the square block and the limiting ring are both provided with fixing holes, the inside of the fixing hole is provided with a fixing rod, one end of the fixing rod is provided with a baffle sliding on the outside of the male end and the female end, and the inside of the male end and the female end are both provided with a plurality of reinforcing ribs.

[0007] Preferably, the outer circular surfaces of the male end and the female end are both provided with positioning blocks, one end of the positioning block is provided with a sleeve, a short rod is provided inside the sleeve, one end of the short rod is provided with a limiting spring, the other end of the limiting spring is fixedly connected to the positioning block, and the other end of the short rod is fixedly connected to the baffle.

[0008] Preferably, one end of the fixing rod is provided with an upward protrusion, which extends outward from the fixing hole, and the other end of the fixing rod is provided with a return spring, and the other end of the return spring abuts against the inside of the baffle.

[0009] Preferably, a plurality of observation bars are provided on the outer circumferential surfaces of the male end and the female end, the plurality of observation bars are grouped in pairs, and an oblique support bar is provided between the two observation bars in each group.

[0010] Preferably, one end of the male end and the female end with the square block is provided with a first connecting block, and a connecting bolt is provided inside the first connecting block, and the connecting bolt is inserted into the fixing hole and the inside of the first connecting block.

[0011] Preferably, an installation groove is provided inside the first connecting block, a retaining spring is provided inside the installation groove, an arc-shaped clamping block is provided at one end of the retaining spring, and a plurality of clamping grooves are provided on the surface of the connecting bolt, and the arc-shaped clamping block abuts against the inside of one of the clamping grooves.

[0012] Preferably, a handle is provided at one end of the connecting bolt.

[0013] Preferably, one end of the male end and the female end provided with a limiting ring is provided with a second connecting block, a connecting hole is provided inside the second connecting block, and the second connecting block can be connected to the male end or the female end through a fixing rod.

[0014] In summary, compared with the prior art, the beneficial effects of this solution are:

[0015] (1) The utility model provides a male end and a female end, which can be connected end to end through a square groove, a square block and a fixing rod, thereby improving the connection efficiency and making the device easy to disassemble and install. By providing a first connecting block and a second connecting block at both ends of the male end and the female end, the end surfaces of the male end and the female end that are not connected can be made flat, so that the two ends can be better connected to the side wall of the foundation pit or the compensation cylinder;

[0016] (2) The present invention provides reinforcing ribs and observation strips, so that the bending degree of the support can be visually observed from the outer surface of the foundation pit support, thereby providing reliable quality assurance. BRIEF DESCRIPTION OF THE DRAWINGS

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

[0018] Figure 2 It is a structural diagram of the male end part;

[0019] Figure 3 It is a structural diagram of the female end part;

[0020] Figure 4 It is a side view of the utility model;

[0021] Figure 5 for Figure 4 Stereoscopic cross-sectional view at AA in the middle;

[0022] Figure 6 for Figure 5 A partial enlarged view of point B in the middle;

[0023] Figure 7 for Figure 5 A partial enlarged view of point C in the middle;

[0024] In the figure: 1 male end; 2 female end; 3 limiting ring; 4 square groove; 5 square block; 6 fixing hole; 7 fixing rod; 8 baffle; 9 reinforcing rib; 10 positioning block; 11 sleeve; 12 short rod; 13 limiting spring; 14 protrusion; 15 return spring; 16 observation bar; 17 diagonal support bar; 18 first connecting block; 19 connecting bolt; 20 mounting groove; 21 retaining spring; 22 arc-shaped block; 23 slot; 24 handle; 25 second connecting block; 26 connecting hole; 27 fixing ring. DETAILED DESCRIPTION

[0025] In order to enable those skilled in the art to better understand the present invention, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention.

[0026] refer to Figure 1 、 Figure 2 、 Figure 3 、 Figure 4and Figure 5 A steel structure foundation pit bracket that is easy to install and disassemble, includes a male end 1, a female end 2 for expansion is provided on one side of the male end 1, the male end 1 and the female end 2 are different in length but the same structure, one end of the male end 1 and the female end 2 are both provided with a limiting ring 3, the center of the limiting ring 3 is provided with a square groove 4, the other end of the male end 1 and the female end 2 is provided with a square block 5, the square block 5 and the square groove 4 can be snap-fitted, the inside of the square block 5 and the limiting ring 3 are both provided with fixing holes 6, the inside of the fixing hole 6 is provided with a fixing rod 7, one end of the fixing rod 7 is provided with a baffle 8 for sliding on the outside of the male end 1 and the female end 2, and a plurality of reinforcing ribs 9 are provided inside the male end 1 and the female end 2.

[0027] In this solution, the male end 1 and the female end 2 can be clamped together by the square block 5 and the square groove 4, and then connected using the fixing rod 7 to achieve a quick connection effect, so that the foundation pit bracket can be extended and connected according to the distance of the foundation pit side wall, thereby improving the flexibility of the device; a plurality of fixing rings 27 are provided on the outer circular surface of the male end 1 and the female end 2, and the fixing ring 27 is located on one side of the baffle 8. This setting can enable the fixing ring 27 to block the baffle 8, thereby limiting the moving distance of the baffle 8 and preventing the position of the baffle 8 from shifting and affecting the normal use of the device; by setting the limit ring 3, the square groove 4 can be quickly positioned and provide a support effect for the square block 5; the square block 5 and the square groove 4 can enable the male end 1 and the female end 2 to be connected in a chimeric manner, preventing the male end 1 and the female end 2 from angular misalignment, affecting the connection efficiency of the square block 5 and the square groove 4, thereby making the device more convenient to connect.

[0028] refer to Figure 1 、 Figure 4 and Figure 5 The outer circular surfaces of the male end 1 and the female end 2 are both provided with a positioning block 10, one end of the positioning block 10 is provided with a sleeve 11, a short rod 12 is provided inside the sleeve 11, one end of the short rod 12 is provided with a limiting spring 13, the other end of the limiting spring 13 is fixedly connected to the positioning block 10, and the other end of the short rod 12 is fixedly connected to the baffle 8.

[0029] In this solution, the number of positioning blocks 10 is consistent with the number of sleeves 11 and short rods 12. The specific number is not subject to excessive restrictions and can be adjusted according to specific processing needs. When installing the fixing rod 7 into the fixing hole 6, it is necessary to move the baffle 8 first so that the baffle 8 leaks out of the fixing hole 6 of the limiting ring 3 below. After the baffle 8 moves, it will push the short rod 12 on one side. The short rod 12 will squeeze the internal limit spring 13 when moving. After the fixing rod 7 is inserted into the fixing hole 6, the baffle 8 is released. At this time, the limit spring 13 stretches due to elastic potential energy and pushes the baffle 8 to move through the short rod 12, so that the baffle 8 moves to the top of the fixing rod 7 to prevent the fixing rod 7 from disengaging from the fixing hole 6, thereby achieving a connection effect.

[0030] With reference to Figure 4 , Figure 5 and Figure 7 , one end of the fixed rod 7 is provided with an upward protrusion 14 which protrudes outward from the fixed hole 6, and the other end of the fixed rod 7 is provided with a return spring 15, the other end of the return spring 15 abuts against the inside of the baffle plate 8.

[0031] In this scheme, by setting the protrusion 14 at the top of the fixed rod 7, the fixed rod 7 can be conveniently taken out, preventing the fixed rod 7 from being tilted and stuck in the fixed hole 6, thereby causing the device to malfunction; when the baffle plate 8 blocks the fixed rod 7, it will abut against the side surface of the protrusion 14, achieving the limiting effect while facilitating the removal of the fixed rod 7; when installing the fixed rod 7, the return spring 15 will be compressed, and since the top baffle plate 8 blocks the fixed rod 7, the return spring 15 is always in a compressed state; when disassembling, first push the baffle plate 8, at this time the return spring 15 restores due to the elastic potential energy, and pushes the fixed rod 7 to move upward, popping the fixed rod 7 out to a certain height, making it easy to remove the fixed rod 7 from the fixed hole 6, thereby improving the disassembly efficiency.

[0032] With reference to Figure 1 and Figure 2 , the outer cylindrical surface of the male end 1 and the female end 2 is provided with a plurality of observation strips 16, and the plurality of observation strips 16 are arranged in pairs, and a diagonal support strip 17 is arranged between each pair of observation strips 16.

[0033] In this scheme, the observation strip 16 is a plurality of straight strips fixed to one side of the fixed ring 27, by setting the observation strip 16, not only can the shape of the foundation pit support be observed directly, but also the foundation pit support can be thickened, thereby improving the supporting strength of the foundation pit support; the diagonal support strip 17 connects the two observation strips 16, making the observation strip 16 more stable, further improving the supporting strength of the foundation pit support, thereby improving the supporting effect.

[0034] With reference to Figure 1 , Figure 4 and Figure 5 , one end of the male end 1 and the female end 2 with the square block 5 is provided with a first connecting block 18, the inside of the first connecting block 18 is provided with a connecting bolt 19, the connecting bolt 19 is inserted into the inside of the fixed hole 6 and the first connecting block 18, one end of the male end 1 and the female end 2 provided with the limiting ring 3 is provided with a second connecting block 25, the inside of the second connecting block 25 is provided with a connecting hole 26, the second connecting block 25 can be connected with the male end 1 or the female end 2 through the fixed rod 7.

[0035] In this solution, the first connecting block 18 is in a "concave" shape, and can be docked with the square block 5 by inserting the connecting bolt 19 into the fixing hole 6. The second connecting block 25 is in a "convex" shape, and can be connected to the limit ring 3 by inserting the fixing rod 7 into the connecting hole 26. By setting the first connecting block 18 and the second connecting block 25, the two end faces of the foundation pit bracket can be made flat, which is convenient for connecting to the side wall of the foundation pit or with the compensation cylinder, and can protect the connection structure of the square groove 4 and the square block 5. The compensation cylinder is an existing technology and will not be elaborated in this article. Its main function is to provide support capacity for the foundation pit bracket through the hydraulic output rod of the compensation cylinder, so that the foundation pit bracket can be abutted between the inner walls of the foundation pit.

[0036] refer to Figure 4 、 Figure 5 and Figure 6 A mounting groove 20 is provided inside the first connecting block 18, a retaining spring 21 is provided inside the mounting groove 20, an arc-shaped clamping block 22 is provided at one end of the retaining spring 21, a plurality of clamping grooves 23 are provided on the surface of the connecting bolt 19, the arc-shaped clamping block 22 abuts against the inside of one of the clamping grooves 23, and a handle 24 is provided at one end of the connecting bolt 19.

[0037] In this solution, when the arc-shaped block 22 is engaged with the inside of the slot 23, it will limit the movement of the connecting bolt 19, so that the connecting bolt 19 can be fixed inside the first connecting block 18 at any angle, so that the first connecting block 18 and the foundation pit bracket can be supported at any angle without the need for a specific angle, thereby effectively improving the convenience of installation.

[0038] When the male end 1 and the female end 2 are connected, one of the square blocks 5 is inserted into the square groove 4, and the baffle 8 is pushed so that the baffle 8 no longer blocks the positioning hole of the bottom limit ring 3. At this time, the fixing rod 7 is inserted into the fixing hole 6 and the reset spring 15 is squeezed. Since the top baffle 8 blocks the fixing rod 7, the reset spring 15 is always in a compressed state. After the fixing rod 7 is inserted into the fixing hole 6, the male end 1 is connected to the female end 2, thereby increasing the length of the foundation pit bracket to meet the needs of supporting the foundation pit.

[0039] During disassembly, after the baffle 8 is moved, the return spring 15 recovers due to its elastic potential energy and pushes the fixing rod 7 to move upward, so that the fixing rod 7 is easy to be taken out of the fixing hole 6, thereby improving the disassembly efficiency.

[0040] The first connecting block 18 is docked with the square block 5 near one end of the square block 5, and then the connecting bolt 19 is passed through the inside of the first connecting block 18 and the square block 5. When the connecting bolt 19 moves, it will squeeze the arc-shaped block 22 on one side, so that the arc-shaped block 22 squeezes the retaining spring 21 and moves backward along the installation groove 20. After the connecting bolt 19 is fully inserted into the fixing hole 6, it stops moving. At this time, the retaining spring 21 recovers due to elastic potential energy and pushes the arc-shaped block 22 into the slot 23 of the connecting bolt 19 to fix the connecting bolt 19, thereby completing the connection between the first connecting block 18 and the foundation pit bracket.

[0041] On the side close to the limiting ring 3, dock the second connecting block 25 with the limiting ring 3, and then move the baffle 8 so that the baffle 8 no longer blocks the positioning hole of the bottom limiting ring 3. At this time, insert the fixing rod 7 into the fixing hole 6 and pass it through the connecting hole 26 of the second connecting block 25, so that the second connecting block 25 is connected to one end of the foundation pit bracket.

[0042] For example, certain words are used in the specification and claims to refer to specific components. Those skilled in the art should understand that hardware manufacturers may use different terms to refer to the same component. This specification and claims do not use differences in names as a way to distinguish components, but use differences in the functions of the components as the criteria for distinction. For example, "including" mentioned throughout the specification and claims is an open term, so it should be interpreted as "including but not limited to". "Approximately" means that within an acceptable error range, those skilled in the art can solve the technical problem within a certain error range and basically achieve the technical effect.

[0043] It should be noted that the terms "include," "comprises," or any other variations thereof are intended to encompass non-exclusive inclusion, such that a product or system comprising a series of elements includes not only those elements but also other elements not explicitly listed, or elements inherent to such product or system. In the absence of further limitations, an element defined by the phrase "comprising a..." does not exclude the presence of other identical elements in the product or system comprising the element.

[0044] The above description shows and describes several preferred embodiments of the present application. However, as previously mentioned, it should be understood that the present application is not limited to the form disclosed herein and should not be construed as excluding other embodiments. Instead, the present application can be used in various other combinations, modifications, and environments and can be modified within the scope of the application concept described herein through the above teachings or technology or knowledge in the relevant field. Modifications and changes made by those skilled in the art that do not depart from the spirit and scope of the present application should be protected by the claims appended hereto.

Claims

1. A steel structure foundation pit support that is easy to install and disassemble, comprising a male end (1), characterized in that: A female end (2) for expansion is provided on one side of the male end (1), the male end (1) and the female end (2) have different lengths but the same structure, one end of each of the male end (1) and the female end (2) is provided with a limiting ring (3), the center of each of the limiting rings (3) is provided with a square groove (4), the other end of each of the male end (1) and the female end (2) is provided with a square block (5), the square block (5) and the square groove (4) can be snap-fitted, the inside of each of the square block (5) and the limiting ring (3) is provided with a fixing hole (6), the inside of each of the fixing hole (6) is provided with a fixing rod (7), one end of each of the fixing rods (7) is provided with a baffle (8) that slides outside the male end (1) and the female end (2), and the inside of each of the male end (1) and the female end (2) is provided with a plurality of reinforcing ribs (9).

2. A steel structure foundation pit support that is easy to install and disassemble according to claim 1, characterized in that: The outer circular surfaces of the male end (1) and the female end (2) are both provided with positioning blocks (10), one end of the positioning block (10) is provided with a sleeve (11), a short rod (12) is provided inside the sleeve (11), one end of the short rod (12) is provided with a limit spring (13), the other end of the limit spring (13) is fixedly connected to the positioning block (10), and the other end of the short rod (12) is fixedly connected to the baffle (8).

3. The steel structure foundation pit support that is easy to install and disassemble according to claim 1 is characterized in that: One end of the fixing rod (7) is provided with an upward protrusion (14), which extends outward from the fixing hole (6); the other end of the fixing rod (7) is provided with a return spring (15), and the other end of the return spring (15) abuts against the inside of the baffle (8).

4. The steel structure foundation pit support that is easy to install and disassemble according to claim 1 is characterized in that: A plurality of observation bars (16) are provided on the outer circumferential surfaces of the male end (1) and the female end (2), and the plurality of observation bars (16) are grouped in pairs, with an oblique support bar (17) provided between the two observation bars (16) in each group.

5. The steel structure foundation pit support that is easy to install and disassemble according to claim 1 is characterized in that: The male end (1) and the female end (2) are provided with a first connecting block (18) at one end of the square block (5), and a connecting bolt (19) is provided inside the first connecting block (18). The connecting bolt (19) is inserted into the fixing hole (6) and the inside of the first connecting block (18).

6. The steel structure foundation pit support that is easy to install and disassemble according to claim 5 is characterized in that: The first connecting block (18) is provided with a mounting groove (20) inside, a retaining spring (21) is provided inside the mounting groove (20), an arc-shaped clamping block (22) is provided at one end of the retaining spring (21), a plurality of clamping grooves (23) are provided on the surface of the connecting bolt (19), and the arc-shaped clamping block (22) abuts against the inside of one of the clamping grooves (23).

7. The steel structure foundation pit support that is easy to install and disassemble according to claim 5 is characterized in that: One end of the connecting bolt (19) is provided with a handle (24).

8. The steel structure foundation pit support that is easy to install and disassemble according to claim 1 is characterized in that: The male end (1) and the female end (2) are provided with a limiting ring (3) at one end thereof, and a second connecting block (25) is provided inside the second connecting block (25). The connecting hole (26) of the second connecting block (25) can be connected to the male end (1) or the female end (2) via a fixing rod (7).

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