A temporary support wall structure for group pit construction

Abstract

The present invention discloses a temporary support wall structure for group pit construction, which includes a support plate. A positioning strip is fixedly connected to the upper side wall of the support plate, and a positioning groove matching the positioning strip is formed in the lower side wall of the support plate. An H-shaped insertion block is fixedly connected to the right side of the support plate, and an H-shaped insertion slot matching the H-shaped insertion block is formed in the left side of the support plate. The left side, upper side and lower side of the H-shaped insertion slot are all open. An adjustment cavity is formed in the support plate, an adjustment hole is jointly formed in the inner top wall of the adjustment cavity and the lower side wall of the positioning strip, and a movable rod that is movably inserted through the right side of the H-shaped insertion block and extends to the inside of the support plate through the right side wall of the support plate and extends into the adjustment cavity is provided. Through the rapid and precise assembly and disassembly of the support wall at the construction site, the present invention eliminates the cumbersome work of demolishing the underground support wall, is convenient for disassembly and assembly, and the support plate can be reused, meeting the requirements of safety and reliability, cost reduction, and environmental protection.

Description

Technical Field

[0001] The invention relates to the technical field of underground construction engineering, and in particular to a temporary supporting wall structure for group pit construction. Background Art

[0002] In order to minimize the impact on ground facilities and construction safety during underground construction, and based on existing construction technology and experience, these subway space foundation pits are often divided into two or more foundation pits, namely group pits, for construction in sequence. When the underground main structure is completed, it is necessary to open up the partition wall in the group pit to connect the underground spaces.

[0003] According to previous construction experience, the middle partition wall is constructed by cast-in-place reinforced concrete, and then broken down by cutting specific parts manually or mechanically. This method of breaking down the middle partition wall will seriously affect the overall stability of the middle partition wall, and it is difficult to cut, time-consuming, and requires a lot of repair work, slag removal is difficult, and the project cost is high. Summary of the invention

[0004] The purpose of the present invention is to solve the problems in the background technology and to propose a temporary supporting wall structure for group pit construction.

[0005] In order to achieve the above object, the present invention adopts the following technical solutions:

[0006] A temporary support wall structure for group pit construction, comprising a support plate, wherein the upper side wall of the support plate is fixedly connected with a positioning strip, the lower side wall of the support plate is provided with a positioning groove matching the positioning strip, the right side of the support plate is fixedly connected with an H-shaped plug, the left side of the support plate is provided with an H-shaped slot matching the H-shaped plug, the left side, the upper side and the lower side of the H-shaped slot are all open, an adjustment cavity is provided in the support plate, the inner top wall of the adjustment cavity and the lower side wall of the positioning strip are jointly provided with an adjustment hole, a movable rod movably inserted in the right side wall of the support plate and extending into the adjustment cavity is movably penetrated on the right side of the H-shaped plug, and a plug hole is jointly provided on the H-shaped plug and the side wall of the support plate, and a connecting mechanism is provided at one end of the movable rod located in the adjustment cavity and in the two adjustment holes.

[0007] Preferably, the connecting mechanism includes a guide rod movably inserted at the end of the movable rod and fixedly connected to the inner wall of the adjusting cavity, a spring movably sleeved on the outer wall of the guide rod is fixedly connected between the movable rod and the inner wall of the adjusting cavity, a tooth groove is provided on the upper side wall of the movable rod, a gear installed in the adjusting cavity is meshed on the tooth groove, a tooth plate extending into the adjusting hole is meshed on the left side of the gear, and two positioning mechanisms are provided on the upper end of the tooth plate.

[0008] Preferably, the positioning mechanism includes a positioning rod which movably penetrates the inner wall of the adjustment hole and extends to the outside of the positioning bar, and one end of the positioning rod located in the adjustment hole is fixedly connected to a trapezoidal block, and a spring 2 is fixedly connected between the trapezoidal block and the inner wall of the adjustment hole, and two card slots matching the positioning rod are provided on the inner walls on both sides of the positioning groove.

[0009] Preferably, one end of the movable rod located outside the insertion hole is fixedly connected to an arc block, and the upper side wall of the arc block is arranged to be inclined downward from left to right.

[0010] Preferably, a side wall of the tooth plate is provided with a sliding groove matching the movable rod.

[0011] Preferably, pulleys are installed at both ends of the upper side of the tooth plate.

[0012] Preferably, the upper side wall of each trapezoidal block is movably embedded with a plurality of balls movably fitted on the top wall of the adjusting hole on the same side.

[0013] Compared with the existing technology, the advantages of this temporary support wall structure for group pit construction are:

[0014] 1. Set up H-shaped plugs and H-shaped slots. When connecting the support plates, first insert the H-shaped plug on another support plate into the H-shaped slot on the previous support plate from top to bottom or from bottom to top, so as to facilitate the quick connection between multiple vertically adjacent support plates;

[0015] 2. Positioning rods and slots are set. When the movable rod moves into the adjustment cavity, each tooth plate can be driven to move up automatically through two gears, and then the inclined surface of each trapezoidal block is squeezed, so that each trapezoidal block drives each positioning rod to move outward automatically until it is inserted into the corresponding slot, thereby realizing the automatic connection between two vertically adjacent support plates to form a support wall, which is convenient and fast. After the underground main body construction is completed, each support plate can be pulled out from top to bottom in turn, and each positioning rod will automatically move inward until it is out of the corresponding slot, thereby realizing the separation between the vertical support plates, and then realizing the disassembly of the support wall, so that adjacent foundation pits are connected to each other, achieving the effect of fast and accurate assembly and dismantling on the engineering site, eliminating the tedious work of breaking the underground support wall, and convenient disassembly and assembly, and the support plate can be reused, meeting the requirements of safety, reliability, cost reduction, and green environmental protection;

[0016] 3. Set up an arc block, insert the H-shaped plug-in block on the rear support plate into the H-shaped slot on the front support plate from top to bottom, and then when the H-shaped slot slides from top to bottom on the arc surface of the arc block, it can automatically push the arc block to drive the movable rod to move into the adjustment cavity, thereby improving the convenience of assembling between support plates;

[0017] In summary, through the rapid and precise assembly and disassembly of the supporting wall at the construction site, the present invention eliminates the cumbersome work of demolishing the underground supporting wall, is convenient for disassembly and assembly, and the supporting plate can be reused, meeting the requirements of safety and reliability, cost reduction, and environmental protection. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 is a three-dimensional structural schematic diagram of a temporary supporting wall structure for group pit construction proposed by the present invention;

[0019] Figure 2 is a structural schematic diagram of a temporary supporting wall structure for group pit construction proposed by the present invention;

[0020] Figure 3 is a bottom-up three-dimensional view of a side column in a temporary supporting wall structure for group pit construction proposed by the present invention;

[0021] Figure 4 is Figure 3 a magnified structural view of A in

[0022] Figure 5 is a side view of the connection between the positioning strip and the toothed plate in a temporary supporting wall structure for group pit construction proposed by the present invention.

[0023] In the figure: 1 supporting plate, 2 positioning strip, 3 positioning groove, 4 H-shaped insert block, 5 H-shaped slot, 6 adjustment cavity, 7 jack, 8 movable rod, 9 guide rod, 10 first spring, 11 gear, 12 chute, 13 adjustment hole, 14 toothed plate, 15 trapezoidal block, 16 positioning rod, 17 second spring, 18 card slot, 19 ball, 20 pulley, 21 arc-shaped block. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0024] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments.

[0025] In the description of the present invention, it should be understood that the orientation or positional relationship indicated by the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the present invention.

[0026] Refer to Figures 1-5, a temporary support wall structure for group pit construction, including a support plate 1. A positioning strip 2 is fixedly connected to the upper side wall of the support plate 1, and a positioning groove 3 matching the positioning strip 2 is opened on the lower side wall of the support plate 1. When assembling between the support plates 1, multiple vertical support plates 1 should be assembled first, that is, the positioning strip 2 on the latter support plate 1 is inserted into the positioning groove 3 on the previous support plate 1 from top to bottom.

[0027] An H-shaped insertion block 4 is fixedly connected to the right side of the support plate 1, and an H-shaped insertion slot 5 matching the H-shaped insertion block 4 is opened on the left side of the support plate 1. The left side, upper side, and lower side of the H-shaped insertion slot 5 are all open. When connecting the support plates 1, first insert the H-shaped insertion block 4 on another support plate 1 into the H-shaped insertion slot 5 on the previous support plate 1 from top to bottom or from bottom to top, which facilitates the rapid connection between multiple vertically adjacent two support plates 1.

[0028] An adjustment cavity 6 is opened in the support plate 1. An adjustment hole 13 is jointly opened on the inner top wall of the adjustment cavity 6 and the lower side wall of the positioning strip 2. A movable rod 8 that is movably inserted through the right side of the H-shaped insertion block 4 and extends into the adjustment cavity 6 after being movably inserted into the right side wall of the support plate 1 is provided. A jack 7 is jointly opened on the side walls of the H-shaped insertion block 4 and the support plate 1. One end of the movable rod 8 located outside the jack 7 is fixedly connected with an arc-shaped block 21. The upper side wall of the arc-shaped block 21 is inclined downward from left to right. When assembling between the horizontal support plates 1, insert the H-shaped insertion block 4 on the latter support plate 1 into the H-shaped insertion slot 5 on the previous support plate 1 from top to bottom. Then, when the H-shaped insertion slot 5 slides downward along the arc surface of the arc-shaped block 21, it can automatically push the arc-shaped block 21 to drive the movable rod 8 to move into the adjustment cavity 6, improving the convenience of assembling between the support plates 1.

[0029] Connection mechanisms are provided at one end of the movable rod 8 located in the adjustment cavity 6 and in both adjustment holes 13. The connection mechanism includes a guide rod 9 that is movably inserted at the end of the movable rod 8 and fixedly connected to the inner wall of the adjustment cavity 6. A first spring 10 that is fixedly connected between the movable rod 8 and the inner wall of the adjustment cavity 6 and is movably sleeved on the outer wall of the guide rod 9 is provided. A tooth groove is opened on the upper side wall of the movable rod 8, and a gear 11 installed in the adjustment cavity 6 is engaged with the tooth groove. A tooth plate 14 extending into the adjustment hole 13 is engaged with the left side of the gear 11. A sliding groove 12 matching the movable rod 8 is opened on the side wall of the tooth plate 14. When the movable rod 8 moves into the adjustment cavity 6, it will also pass through the sliding groove 12. Thus, it can drive the two gears 11 to rotate clockwise through the tooth groove on its upper side wall and compress the first spring 10. The two gears 11 will each drive the tooth plate 14 engaged with them to move upward. Therefore, the sliding groove 12 avoids the blockage of the upward movement of the tooth plate 14 by the movable rod 8 when the tooth plate 14 moves upward.

[0030] Two positioning mechanisms are provided at the upper end of the toothed plate 14. The positioning mechanism includes a positioning rod 16 that movably penetrates the inner wall of the adjustment hole 13 and extends to the outside of the positioning strip 2. One end of the positioning rod 16 located in the adjustment hole 13 is fixedly connected with a trapezoidal block 15. A plurality of rolling balls 19 that are movably fitted on the inner top wall of the same-side adjustment hole 13 are movably embedded on the upper side wall of each trapezoidal block 15. By using the rolling of each rolling ball 19, the friction between each trapezoidal block 15 and the top of the same-side adjustment hole 13 can be reduced, thereby improving the flexibility of each trapezoidal block 15 during movement. Pulleys 20 are installed at both ends of the upper side of each toothed plate 14, which facilitates the sliding of the toothed plate 14 on the inclined surfaces of the two trapezoidal blocks 15 on the same side when moving upward.

[0031] A second spring 17 is fixedly connected between the trapezoidal block 15 and the inner wall of the adjustment hole 13. Two card slots 18 that match the positioning rod 16 are provided on both inner walls of the positioning groove 3. When the toothed plate 14 moves upward, the two pulleys 20 on its upper side can slide on the inclined surfaces of the two trapezoidal blocks 15 respectively, pushing the two trapezoidal blocks 15 to move away from each other and stretching each second spring 17. At the same time, the two positioning rods 16 move away from each other until they are inserted into the corresponding card slots 18, thereby realizing the automatic connection between two vertically adjacent support plates 1, forming a support wall conveniently and quickly. When the support wall is disassembled after the construction of the underground space main structure is completed, each support plate 1 is sequentially pulled out from top to bottom. When the H-shaped slot 4 on the upper support plate 1 is disengaged from the extrusion of the arc-shaped block 21 on the lower support plate 1, the upper support plate 1 is continuously pulled out until it is completely separated from the lower support plate 1, realizing the separation between the horizontal support plates 1. At the same time, under the elastic force of the first spring 10, the movable rod 8 will automatically move outward, and drive each toothed plate 14 to move downward through each gear 11. Then, after each trapezoidal block 15 is no longer squeezed by the toothed plate 14, under the elastic force of each second spring 17, each trapezoidal block 15 will drive each positioning rod 16 to automatically move inward until it disengages from the corresponding card slot 18, thereby realizing the separation between the vertical support plates 1, and further realizing the disassembly of the support wall, so that adjacent foundation pits are interconnected, achieving the effect of rapid and accurate assembly and disassembly at the construction site, eliminating the cumbersome work of breaking the underground support wall. At the same time, it is convenient for transportation and disassembly and assembly, improving the stability of the support wall structure, which can greatly accelerate the construction progress of the support wall, shorten the construction period, reduce the cost, and the support plate 1 can be reused, meeting the requirements of safety and reliability, cost reduction, and environmental protection.

[0032] Further explanation, the above fixed connection, unless otherwise clearly specified and limited, should be understood in a broad sense. For example, it can be welding, gluing, or integrally formed setting, etc., which are common means well-known to those skilled in the art.

[0033] The above are only the preferred specific embodiments of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present invention, according to the technical solution and inventive concept of the present invention, making equivalent substitutions or changes, shall be covered by the protection scope of the present invention.

Claims

1. A temporary support wall structure for group pit construction, including a support plate (1), characterized in that, The upper side wall of the support plate (1) is fixedly connected with a positioning strip (2). A positioning groove (3) matching the positioning strip (2) is formed in the lower side wall of the support plate (1). An H-shaped insertion block (4) is fixedly connected to the right side of the support plate (1). An H-shaped insertion slot (5) matching the H-shaped insertion block (4) is formed in the left side of the support plate (1). The left side, upper side and lower side of the H-shaped insertion slot (5) are all open. An adjustment cavity (6) is formed in the support plate (1). An adjustment hole (13) is jointly formed in the inner top wall of the adjustment cavity (6) and the lower side wall of the positioning strip (2). A movable rod (8) which is movably inserted through the right side of the H-shaped insertion block (4) and extends to the inside of the right side wall of the support plate (1) and into the adjustment cavity (6) is provided. A jack (7) is jointly formed in the side walls of the H-shaped insertion block (4) and the support plate (1). A connecting mechanism is arranged in one end of the movable rod (8) located in the adjustment cavity (6) and in both of the two adjustment holes (13). The connecting mechanism includes a guide rod (9) which is movably inserted into the end of the movable rod (8) and fixedly connected to the inner wall of the adjustment cavity (6). A first spring (10) which is fixedly connected between the movable rod (8) and the inner wall of the adjustment cavity (6) and movably sleeved on the outer wall of the guide rod (9) is provided. A tooth groove is formed in the upper side wall of the movable rod (8). A gear (11) installed in the adjustment cavity (6) is meshed with the tooth groove. A tooth plate (14) extending into the adjustment hole (13) is meshed with the left side of the gear (11). Two positioning mechanisms are arranged at the upper end of the tooth plate (14). The positioning mechanism includes a positioning rod (16) which movably penetrates the inner wall of the adjustment hole (13) and extends to the outside of the positioning strip (2). A trapezoidal block (15) is fixedly connected to one end of the positioning rod (16) located in the adjustment hole (13). A second spring (17) is jointly fixedly connected between the trapezoidal block (15) and the inner wall of the adjustment hole (13). Two card slots (18) matching the positioning rod (16) are formed in both inner side walls of the positioning groove (3). A sliding groove (12) matching the movable rod (8) is formed in the side wall of the tooth plate (14).

2. The temporary support wall structure for group pit construction according to claim 1, characterized in that, An arc-shaped block (21) is fixedly connected to one end of the movable rod (8) located outside the jack (7). The upper side wall of the arc-shaped block (21) is inclined downward from left to right.

3. A temporary support wall structure for group pit construction according to claim 2, characterized in that, A pulley (20) is installed at both ends of the upper side of each tooth plate (14).

4. A temporary support wall structure for group pit construction according to claim 3, characterized in that, A plurality of balls (19) which are movably embedded in the upper side wall of each trapezoidal block (15) and movably attached to the inner top wall of the same-side adjustment hole (13) are provided.

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