Supporting structure suitable for narrow space and water-rich foundation pit

Abstract

This utility model discloses a support structure suitable for water-rich foundation pits with limited space. It includes multiple end-to-end enclosure panels, multiple sealing plates, a fixing mechanism, and a first support mechanism. The utility model utilizes the interplay between enclosure panels, sealing plates, T-shaped blocks, mounting grooves, and arc-shaped grooves and blocks. One end of the arc-shaped block slides into the arc-shaped groove, allowing for convenient angle adjustment during installation. The sealing plates are made of flexible material, allowing bending according to the joint angle of the enclosure panels, facilitating sealing and enabling waterproofing after installation. The modular design of the enclosure panels allows for better splicing and support in confined spaces, making it a valuable tool for wider application.

Description

Technical Field

[0001] This utility model relates to the field of building construction technology, and in particular to a support structure suitable for water-rich foundation pits with limited space. Background Technology

[0002] An excavation pit is a pit dug at the foundation design location according to the base elevation and foundation plane dimensions. In order to ensure the smooth and safe progress of the construction process, it is necessary to carry out excavation pit support. The commonly used excavation pit support method in engineering is the cement wall support method. Excavation pit engineering has a large risk, and its support system is generally a temporary measure with a small safety reserve in terms of load, strength, deformation, seepage prevention, and durability. It also has obvious regional characteristics, that is, the engineering geological and hydrogeological conditions of different regions vary greatly.

[0003] Especially in areas with limited space and abundant groundwater, the design and construction of foundation pit support structures face numerous challenges. Traditional cement wall support structures are often bulky and complex to install. In the process of supporting foundation pits, especially in confined spaces, they cannot be used for operations on small pits, making the support process inconvenient. Furthermore, the presence of significant groundwater within the foundation pit, coupled with the susceptibility to leakage and deformation in water-rich environments, makes it difficult to meet the support requirements of foundation pits in confined spaces. Utility Model Content

[0004] The purpose of this utility model is to overcome the defects of the prior art and provide a support structure suitable for water-rich foundation pits with limited space, so as to solve the drawbacks of the cement wall support structure of the duct, which is bulky, complicated to install, and unable to support water-rich foundation pits located in narrow spaces.

[0005] To achieve the above-mentioned technical effects, this utility model provides a support structure suitable for water-rich foundation pits with limited space, comprising:

[0006] Multiple enclosure panels are spliced ​​end to end. Each enclosure panel has an arc-shaped block fixedly connected to its first / last end. The tail / first ends of adjacent enclosure panels are respectively provided with arc-shaped grooves for the arc-shaped blocks to slide and engage, thereby splicing two adjacent enclosure panels end to end.

[0007] Multiple sealing plates are flexibly installed on one side of the multiple enclosure plates near the sidewall of the foundation pit, and the multiple sealing plates are respectively installed at the splice of two adjacent enclosure plates;

[0008] Fixed mechanisms, including:

[0009] Multiple base plates are installed on the side of the enclosure plate opposite to the sidewall of the foundation pit, corresponding one-to-one with the multiple enclosure plates, and the bottom of each base plate is in contact with the ground of the foundation pit;

[0010] Multiple sets of mounting columns are provided, corresponding one-to-one with multiple base plates. Each set of mounting columns includes multiple mounting columns that are evenly arranged and slidably inserted into the corresponding base plate. The first end of the multiple mounting columns is fixedly connected by a lower pressure plate, and the second end can slidably pass through the corresponding base plate and is used to insert into the pit ground.

[0011] A first support mechanism is connected between two enclosure panels located at two adjacent corners within the foundation pit and arranged opposite each other. The first support mechanism includes:

[0012] The movable sleeve has an internally threaded sleeve rotatably mounted inside, and a rotating plate is rotatably mounted at the second end of the movable sleeve;

[0013] The connecting rod has one end abutting against one of the two opposing enclosure plates, and the other end rotatably connected to the rotating plate;

[0014] A threaded rod is threadedly inserted into the internal threaded sleeve. The first end of the threaded rod extends out of the first end of the movable sleeve and abuts against the other of the two opposing baffles. The second end extends out of the movable sleeve and is fixedly connected to the rotating plate.

[0015] Preferably, each of the enclosure panels has a sliding groove at its first / last end, and a sliding block is slidably installed in the sliding groove along the splicing direction, and the sliding block and the arc-shaped block are movably connected by a rotating shaft.

[0016] Preferably, each of the sealing plates has a T-shaped block fixedly installed at both ends along the splicing direction, and the outer sides of two adjacent enclosure plates are provided with mounting grooves for the corresponding T-shaped blocks to slide and insert, thereby sealing the splicing joint of the two enclosure plates after they are spliced ​​end to end.

[0017] Preferably, each of the base plates is fixedly mounted with a movable rod, the lower pressure plate is slidably sleeved on the outside of the movable rod, and the base plate is evenly provided with multiple through slots corresponding to the multiple mounting posts, which are used to allow the multiple mounting posts to slide into each other when the lower pressure plate slides relative to the movable rod.

[0018] Preferably, a sliding rod extending along the height direction is provided on the side of the enclosure plate facing away from the pit sidewall, and a second support mechanism for supporting the enclosure plate is movably installed on the sliding rod.

[0019] Preferably, the second support mechanism includes:

[0020] A movable plate is slidably fitted onto the sliding rod along the length of the sliding rod, and the movable plate has multiple mating holes;

[0021] The bonding plate is fitted to the bottom of the foundation pit floor;

[0022] A support rod is connected between the movable plate and the bonding plate, and its two ends are rotatably connected to the movable plate and the bonding plate, respectively.

[0023] Preferably, an L-shaped plate is fixedly installed on the side of the enclosure plate facing away from the pit sidewall at the bottom position corresponding to the sliding rod. The L-shaped plate is provided with a plurality of fixing knobs for being inserted into the corresponding docking holes to fix the movable plate.

[0024] Preferably, a flip plate is rotatably installed on the top of the side of the enclosure plate facing away from the pit sidewall. After flipping, the flip plate is arranged parallel to the enclosure plate, and the flip plate is provided with a plurality of limiting posts for being inserted into the corresponding docking holes after flipping, thereby limiting the movable plate after it slides to the top of the sliding rod.

[0025] The technical effects achieved by this utility model due to the adoption of the above technical solution are as follows:

[0026] 1) The enclosure is equipped with a combination of baffles, T-blocks, and arc-shaped grooves. One end of the arc-shaped block is slidably installed into the arc-shaped groove, while the T-blocks on both sides of the sealing plate are slidably installed into the inside of the baffle. The T-blocks seal the gap between the two baffles. The sliding block slides along the inside of the sliding groove, allowing one end of the sliding block to slide out of the baffle, so that the arc-shaped block can fully extend into the baffle. The arc-shaped block can be easily flipped by the rotating shaft. The bent arc-shaped block is then installed with the arc-shaped groove, allowing for easy angle adjustment during the installation of the baffles. The sealing plate is made of a flexible material and can be bent according to the splicing angle of the baffles, making the sealing process more convenient. After the baffles are installed, waterproofing is performed. The modular design of the baffles allows for better splicing and support in smaller spaces.

[0027] 2) By configuring a base plate, a lower pressure plate, a movable rod, drainage holes, and a through groove, the base plate can contact the pit floor during the installation of the enclosure panel. The base plate stabilizes the enclosure panel, and the drainage holes allow water to pass through, ensuring a tighter fit between the base plate and the ground. When the base plate contacts the ground, the spiked part of the installation column is inside the through groove and stands upright on the ground. By pressing down on the lower pressure plate, the worker can make it slide along the outside of the movable rod, allowing the installation column to be pressed towards the ground through the through groove. This pushes the lower pressure plate downwards onto the ground, making the enclosure panel more stable during installation, providing further support, and preventing tilting.

[0028] 3) By setting up a rotating disk, support plate, threaded rod, internal threaded sleeve and limiting groove, the internal threaded sleeve connected to one side of the rotating disk can rotate synchronously by rotating the rotating disk. During the rotation of the internal threaded sleeve, the rotating sleeve installed on the outer side of the internal threaded sleeve can rotate along the inside of the rotating groove. During the rotation of the internal threaded sleeve, it can engage with the threaded rod, so that the threaded rod can move along the thread direction of the internal threaded sleeve. During the movement of the threaded rod, the engagement between the limiting block and the limiting groove can limit the threaded rod and prevent the threaded rod from rotating. This prevents one end of the threaded rod from extending to the outer end of the movable sleeve, so that the support plate can fit against the inner wall of the enclosure plate and support the enclosure plate.

[0029] 4) Through the interaction of sliding rods, support rods, bonding plates, limiting posts, and movable plates, the movable plate can slide along the outside of the sliding rods, allowing it to be installed on the inside of the L-shaped plate. The movable plate is then aligned with the docking hole via a fixing knob, limiting the distance between the movable plate and the L-shaped plate. Flipping the support rods and bonding plates allows the bonding plates to contact the ground, further supporting the enclosure when it is compressed. During storage, the movable plate slides along the sliding rods, and flipping the plate aligns the limiting post with the docking hole, thus limiting the movable plate and facilitating easy storage. Attached Figure Description

[0030] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0031] Figure 1This is a first perspective view of a support structure for a water-rich foundation pit with limited space, according to an embodiment of the present invention.

[0032] Figure 2 This is a second perspective view of a support structure for a water-rich foundation pit with limited space, according to an embodiment of the present invention.

[0033] Figure 3 This is a schematic diagram of the installation structure of the T-shaped block and the enclosure plate in an embodiment of this utility model.

[0034] Figure 4 This is a schematic diagram of the installation structure of the enclosure plate and the base plate in an embodiment of this utility model.

[0035] Figure 5 This is a schematic diagram of the installation structure of the lower pressure plate in an embodiment of this utility model.

[0036] Figure 6 This is a schematic diagram of the installation structure of the sliding groove and the sliding block in an embodiment of this utility model.

[0037] Figure 7 This is a schematic diagram of the installation structure of the movable plate and the L-shaped plate in an embodiment of this utility model.

[0038] Figure 8 This is a schematic diagram of the installation structure of the movable plate and the flip plate in an embodiment of this utility model.

[0039] Figure 9 This is a schematic diagram of the structure of the movable sleeve in an embodiment of this utility model.

[0040] Figure 10 This is a schematic diagram of the internal structure of the movable sleeve in an embodiment of this utility model.

[0041] The correspondence between the numbers in the attached diagram is as follows:

[0042] 1. Enclosure panel; 101. Sealing plate; 102. Mounting groove; 103. T-block; 104. Arc groove; 105. Sliding groove; 106. Sliding block; 107. Arc block; 108. Rotating shaft;

[0043] 2. Base plate; 201. Drain hole; 202. Through groove; 203. Lower pressure plate; 204. Mounting sleeve; 205. Movable rod; 206. Mounting column; 207. First grip;

[0044] 3. Movable sleeve; 301. Rotating plate; 302. Rotating disk; 303. Bearing seat; 304. Connecting rod; 305. Support plate; 306. Movable groove; 307. Internal threaded sleeve; 308. Rotating groove; 309. Rotating sleeve; 310. Threaded rod; 311. Limiting block; 312. Limiting groove;

[0045] 4. Sliding rod; 401. Movable plate; 402. Support rod; 403. Adhesive plate; 404. Connecting seat; 405. L-shaped plate; 406. Fixing knob; 407. Docking hole; 408. Flip plate; 409. Limiting post; 410. Second grip. Detailed Implementation

[0046] 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.

[0047] Please see Figures 1 to 10 As shown, this utility model embodiment provides a support structure suitable for water-rich foundation pits with limited space, including multiple enclosure plates 1 spliced ​​end to end, multiple sealing plates 101, a fixing mechanism, and a first support mechanism. Each enclosure plate 1 has an arc-shaped block 107 fixedly connected to its first / last end, and each adjacent enclosure plate 1 has an arc-shaped groove 104 at its last / first end for the arc-shaped block 107 to be slidably engaged, thereby splicing two adjacent enclosure plates 1 end to end. The multiple sealing plates 101 are foldably disposed on the side of the multiple enclosure plates 1 near the sidewall of the foundation pit, and the multiple sealing plates 101 are respectively disposed at the splicing point of two adjacent enclosure plates 1.

[0048] Furthermore, the fixing mechanism includes multiple base plates 2 and multiple sets of mounting columns. The multiple base plates 2 are arranged one-to-one with the multiple enclosure plates 1 on the side of the enclosure plate 1 facing away from the pit sidewall, and the bottom of each base plate 2 is in contact with the pit ground. The multiple sets of mounting columns are arranged one-to-one with the multiple base plates 2. Each set of mounting columns includes multiple mounting columns 206 that are evenly arranged and slidably inserted into the corresponding base plate 2. The first end of the multiple mounting columns 206 is fixedly connected by a lower pressure plate 203, and the second end can slide through the corresponding base plate 2 and is used to insert into the pit ground.

[0049] Furthermore, the first support mechanism is connected between two adjacent and oppositely arranged enclosure plates 1 located at two corners within the foundation pit. The first support mechanism includes a movable sleeve 3, a connecting rod 304, and a threaded rod 310. The movable sleeve 2 has an internally threaded sleeve 307 rotatably installed inside, and a rotating plate 301 rotatably installed at the second end of the movable sleeve 2. One end of the connecting rod 304 abuts against one of the two oppositely arranged enclosure plates 1, and the other end is rotatably connected to the rotating plate 301. The threaded rod 310 is threadedly inserted into the internally threaded sleeve 307. The first end of the threaded rod 310 extends out of the first end of the movable sleeve 3 and abuts against the other of the two oppositely arranged enclosure plates 1, and the second end extends out of the movable sleeve 3 and is fixedly connected to the rotating plate 301.

[0050] Please see Figure 1 , Figure 3 and Figure 6 As shown, each enclosure panel 1 has a sliding groove 105 at its first / last end. A sliding block 106 is slidably installed in the sliding groove 105 along the splicing direction, and the sliding block 106 is movably connected to the arc-shaped block 107 via a rotating shaft 108. Preferably, in this embodiment, each sealing plate 104 has a T-shaped block 103 fixedly installed at both ends along the splicing direction, and the outer sides of two adjacent enclosure panels 1 are provided with mounting grooves 102 for the corresponding T-shaped blocks 103 to slide and insert, thereby sealing the splicing joint of the two enclosure panels 1 after splicing. It should be noted that in this embodiment, the sealing plate 101 is made of a flexible material that can be bent and deformed, thereby adapting to the angle changes between two adjacent enclosure panels 1.

[0051] Please see Figure 4 and Figure 5 As shown, in this embodiment, each mounting post 206 has a spike at its second end, and each base plate 2 has a mounting sleeve 204 fixedly mounted on it. A movable rod 205 is fixedly mounted on the mounting sleeve 204. A lower pressure plate 203 is slidably fitted onto the outside of the movable rod 205. The base plate 2 has multiple through slots 202 evenly distributed, corresponding to the mounting posts 206, for the mounting posts 206 to slide into when the lower pressure plate 203 slides relative to the movable rod. Preferably, in this embodiment, the base plate 2 also has a drainage hole 201, and a first handle 207 is fixedly mounted on the top of the lower pressure plate 203. The outer side of the first handle 207 has anti-slip textures.

[0052] It should be noted that during the installation of the enclosure panel 1, the base plate 2 is made to contact the ground of the foundation pit. The base plate 2 stabilizes the enclosure panel 1 and ensures a tighter fit between the base plate 2 and the ground. When the base plate 2 contacts the ground, the spiked part of the mounting column 206 is inside the through groove 202 and stands upright on the ground. By pressing down on the pressure plate 203, the worker can slide the pressure plate 203 along the outside of the movable rod 205, allowing the mounting column 206 to be pressed towards the ground through the through groove 202. This pushes the pressure plate 203 downwards onto the ground, making the enclosure panel 1 more stable during installation, providing further support and preventing tilting.

[0053] Please see Figure 2 , Figure 7 and Figure 8 As shown, a sliding rod 4 extending along the height direction is provided on the side of the enclosure panel 1 facing away from the pit sidewall, and a second support mechanism for supporting the enclosure panel is movably installed on the sliding rod 4.

[0054] Further, in this embodiment, the second support mechanism includes a movable plate 401, a bonding plate 403, and a support rod 402. The movable plate 401 is slidably fitted onto the sliding rod 4 along its length, and has multiple mating holes 407. The bottom of the bonding plate 403 is fitted to the pit floor. The support rod 402 connects the movable plate 401 and the bonding plate 403, and its two ends are rotatably connected to both the movable plate 401 and the bonding plate 403. Preferably, in this embodiment, both ends of the support rod 402 are movably installed to the movable plate 401 and the bonding plate 403 via connecting seats 404.

[0055] Furthermore, in this embodiment, an L-shaped plate 405 is fixedly installed on the side of the enclosure plate 1 facing away from the pit sidewall at the bottom position corresponding to the sliding rod 4. The L-shaped plate 405 is provided with a plurality of fixing knobs 406 for inserting into the corresponding docking holes 407 to fix the movable plate 401 when the second support mechanism is performing support work. Preferably, a flip plate 408 is rotatably installed on the top of the side of the enclosure plate 1 facing away from the pit sidewall. A second handle 410 is fixedly installed on the top of the flip plate 408. The flip plate is provided with a plurality of limiting posts 409 for inserting into the corresponding docking holes 407 after flipping, thereby limiting the movable plate 401 after it slides to the top of the sliding rod 4. It should be noted that when the second support mechanism is performing its support work, the flip plate 408 is in its initial state, that is, it is set perpendicular to the enclosure plate 1. After the second support mechanism completes its support work, the flip plate 408 is in its flipped state, that is, it is set parallel to the enclosure plate 1. At this time, multiple limiting posts 409 can be inserted into the corresponding docking holes 407 to limit the movable plate 401, thereby facilitating storage.

[0056] Please refer to 2. Figure 9 and Figure 10 As shown, in this embodiment, the end of the connecting rod 304 facing away from the rotating plate 301 and the first end of the threaded rod 310 are both fixedly connected to the enclosure plate 1 via a support plate 305, and an anti-slip pad is provided on the support plate 305. Preferably, a rotating disk 302 is fixedly installed on the outer side of the rotating plate 301, and the rotating plate 301 and the connecting rod 304 are rotatably mounted via a bearing seat 303.

[0057] Furthermore, in this embodiment, a rotating sleeve 309 is fixedly installed on the outer side of the internal threaded sleeve 307, a rotating groove 308 that mates with the rotating sleeve 309 is provided on the inner side of the moving sleeve 3, a limiting block 311 is fixedly installed on the inner side of the internal threaded sleeve 307, and a limiting groove 312 that mates with the limiting block 311 is provided on the threaded rod 310. It should be noted that by rotating the rotating plate 301, the internal threaded sleeve 307 connected to one side of the rotating plate 301 can rotate synchronously. During the rotation of the internal threaded sleeve 307, the rotating sleeve 309 installed on the outside of the internal threaded sleeve 307 can rotate along the inside of the rotating groove 308. During the rotation of the internal threaded sleeve 307, it can engage with the threaded rod 310, so that the threaded rod 310 can move along the thread direction of the internal threaded sleeve 307. During the movement of the threaded rod 310, the mutual cooperation between the limiting block 311 and the limiting groove 312 can limit the threaded rod 310, preventing the threaded rod 310 from rotating. This prevents one end of the threaded rod 310 from extending towards the first end of the movable sleeve 3, so that the support plate 305 can fit against the inner wall of the two opposing enclosure plates 1, supporting the enclosure plates 1.

[0058] The working principle of the support structure for water-rich foundation pits in confined spaces, as described in this embodiment of the utility model, includes:

[0059] One end of the arc-shaped block 107 is slidably installed into the inside of the arc-shaped groove 104. At the same time, the T-shaped blocks 103 installed on both sides of the sealing plate 101 are slidably installed into the inside of the enclosure plate 1. The T-shaped blocks 103 can seal the gap between the two enclosure plates 1. Meanwhile, the sliding block 106 can slide along the inside of the sliding groove 105. One end of the sliding block 106 slides out of the enclosure plate 1, so that the arc-shaped block 107 can be fully extended into the inside of the enclosure plate 1. Under the action of the rotating shaft 108, the arc-shaped block 107 can be easily flipped. The bent arc-shaped block 107 is installed with the arc-shaped groove 104. The angle can be easily adjusted during the installation of the enclosure plates 1. Since the sealing plate 101 is a flexible material, it can be bent according to the flip angle generated by the arc-shaped block 107, which makes the sealing process more convenient. After the enclosure plate 1 is installed, waterproofing is performed. The modular design of the enclosure plate 1 can better splice and support work in small spaces.

[0060] During the installation of the enclosure panel 1, the base plate 2 is brought into contact with the pit ground. The base plate 2 stabilizes the enclosure panel 1 and ensures a tighter fit between the base plate 2 and the ground. When the base plate 2 is in contact with the ground, the spikes of the mounting column 206 are inside the through groove 202 and stand upright on the ground. By stepping on the pressure plate 203, the workers can slide the pressure plate 203 along the outside of the movable rod 205, allowing the mounting column 206 to be pressed towards the ground through the through groove 202. This pushes the pressure plate 203 downwards onto the ground, making the enclosure panel 1 more stable during installation, providing further support and preventing tilting.

[0061] By rotating the rotating plate 301, the internal threaded sleeve 307 connected to one side of the rotating plate 301 can rotate synchronously. During the rotation of the internal threaded sleeve 307, the rotating sleeve 309 installed on the outer side of the internal threaded sleeve 307 can rotate along the inside of the rotating groove 308. During the rotation of the internal threaded sleeve 307, it can engage with the threaded rod 310, so that the threaded rod 310 can move along the thread direction of the internal threaded sleeve 307. During the movement of the threaded rod 310, the mutual cooperation between the limiting block 311 and the limiting groove 312 can limit the threaded rod 310, preventing the threaded rod 310 from rotating. This prevents one end of the threaded rod 310 from extending to the outer end of the movable sleeve 3, thereby allowing the support plate 305 to fit against the inner wall of the enclosure plate 1 and supporting the enclosure plate 1.

[0062] The movable plate 401 can slide along the outside of the sliding rod 4, allowing it to be installed on the inside of the L-shaped plate 405. The fixed knob 406 aligns with the docking hole 407, limiting the movement between the movable plate 401 and the L-shaped plate 405. The rotating support rod 402 connects with the bonding plate 403, which then contacts the ground, providing further support to the enclosure plate 1 during compression. During storage, the movable plate 401 slides along the outside of the sliding rod 4, and the rotating plate 408 aligns the limiting post 409 with the docking hole 407, thus limiting the movement of the movable plate 401 and facilitating convenient storage.

[0063] All parts not described in this utility model are the same as or can be implemented using existing technology. Although embodiments of this utility model 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 this utility model, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A support structure suitable for water-rich foundation pits with limited space, characterized in that, include: Multiple enclosure panels are spliced ​​end to end. Each enclosure panel has an arc-shaped block fixedly connected to its first / last end. The tail / first ends of adjacent enclosure panels are respectively provided with arc-shaped grooves for the arc-shaped blocks to slide and engage, thereby splicing two adjacent enclosure panels end to end. Multiple sealing plates are flexibly installed on one side of the multiple enclosure plates near the sidewall of the foundation pit, and the multiple sealing plates are respectively installed at the splice of two adjacent enclosure plates; Fixed mechanisms, including: Multiple base plates are installed on the side of the enclosure plate opposite to the sidewall of the foundation pit, corresponding one-to-one with the multiple enclosure plates, and the bottom of each base plate is in contact with the ground of the foundation pit; Multiple sets of mounting columns are provided, corresponding one-to-one with multiple base plates. Each set of mounting columns includes multiple mounting columns that are evenly arranged and slidably inserted into the corresponding base plate. The first end of the multiple mounting columns is fixedly connected by a lower pressure plate, and the second end can slidably pass through the corresponding base plate and is used to insert into the pit ground. A first support mechanism is connected between two enclosure panels located at two adjacent corners within the foundation pit and arranged opposite each other. The first support mechanism includes: The movable sleeve has an internally threaded sleeve rotatably mounted inside, and a rotating plate is rotatably mounted at the second end of the movable sleeve; The connecting rod has one end abutting against one of the two opposing enclosure plates, and the other end rotatably connected to the rotating plate; A threaded rod is threadedly inserted into the internal threaded sleeve. The first end of the threaded rod extends out of the first end of the movable sleeve and abuts against the other of the two opposing baffles. The second end extends out of the movable sleeve and is fixedly connected to the rotating plate.

2. The support structure for water-rich foundation pits with limited space as described in claim 1, characterized in that, Each of the enclosure panels has a sliding groove at its first / last end. A sliding block is slidably installed in the sliding groove along the splicing direction, and the sliding block and the arc-shaped block are movably connected by a rotating shaft.

3. The support structure for water-rich foundation pits with limited space as described in claim 1, characterized in that, Each of the sealing plates has a T-shaped block fixedly installed at both ends along the splicing direction. The outer sides of two adjacent enclosure plates are provided with mounting grooves for the corresponding T-shaped blocks to slide and insert, thereby sealing the splicing joint of the two enclosure plates after they are spliced ​​end to end.

4. The support structure for water-rich foundation pits with limited space as described in claim 1, characterized in that, Each of the base plates is fixedly mounted with a movable rod, and the lower pressure plate is slidably sleeved on the outside of the movable rod. The base plate is evenly provided with multiple through slots corresponding to the multiple mounting posts, which are used to allow the multiple mounting posts to slide into the lower pressure plate relative to the movable rod.

5. The support structure for water-rich foundation pits with limited space as described in claim 1, characterized in that, A sliding rod extending along the height direction is provided on the side of the enclosure plate facing away from the pit sidewall, and a second support mechanism for supporting the enclosure plate is movably installed on the sliding rod.

6. The support structure for water-rich foundation pits with limited space as described in claim 5, characterized in that, The second support mechanism includes: A movable plate is slidably fitted onto the sliding rod along the length of the sliding rod, and the movable plate has multiple mating holes; The bonding plate is fitted to the bottom of the foundation pit floor; A support rod is connected between the movable plate and the bonding plate, and its two ends are rotatably connected to the movable plate and the bonding plate, respectively.

7. The support structure for water-rich foundation pits with limited space as described in claim 6, characterized in that, An L-shaped plate is fixedly installed on the side of the enclosure plate facing away from the pit sidewall at the bottom position corresponding to the sliding rod. The L-shaped plate is provided with multiple fixing knobs for inserting into the corresponding docking holes to fix the movable plate.

8. The support structure for water-rich foundation pits with limited space as described in claim 6, characterized in that, A flip plate is rotatably installed on the top of the side of the enclosure plate facing away from the pit sidewall. After flipping, the flip plate is arranged parallel to the enclosure plate, and the flip plate is provided with a plurality of limiting posts for being inserted into the corresponding docking holes after flipping, thereby limiting the movable plate after it slides to the top of the sliding rod.

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