A deep foundation pit dewatering well sealing device

Abstract

The application belongs to the field of building construction, in particular to a deep foundation pit dewatering well sealing device, which comprises a base, a fixing frame is bolted on the top of the base, a winch is fixedly connected to the top of the fixing frame, a steel wire rope is fixedly connected to the winch, a first fixing seat is fixedly connected to the bottom end of the steel wire rope, an extension rod is fixedly connected to the bottom of the first fixing seat, a second fixing seat is fixedly connected to the bottom end of the extension rod, a cavity is formed in the first fixing seat and the second fixing seat, the fixing plate and the sealing plate are combined into an annular pipe by the above-mentioned setting, the annular pipe is attached to the inside of the dewatering well, which can block the groundwater, thereby facilitating subsequent control of the water level and subsequent well sealing steps, and can support the soft soil layer and reduce the occurrence of sand flow.

Description

Technical Field

[0001] This invention relates to the field of building construction, specifically to a sealing device for a deep foundation pit dewatering well. Background Technology

[0002] A dewatering well is a well used to lower the groundwater level so that it is below the design elevation, thus ensuring the safety of the foundation pit.

[0003] In current technology, after the foundation slab construction is completed, workers need to seal the dewatering wells. A steel sleeve is installed at the wellhead. During the sealing process, well water needs to be drained, and then concrete is injected into the dewatering well. A circular steel plate is welded to the top of the sleeve, and the surface of the sleeve is covered with waterproof membrane for waterproofing. In some areas, due to the influence of groundwater head and quicksand, the underground soil layer may experience seepage and difficulty in pouring sealing concrete. In this case, workers will first use a submersible pump to extract groundwater to lower the water level in the dewatering well. Then, water-absorbing resin is added to the dewatering well to form a water-absorbing layer. When the water absorption rate reaches the preset value, a flocculant is added to make the water form a colloid. Then, a mixture is added and compacted. Finally, concrete is poured to complete the sealing. Under a certain water pressure, the soil at the bottom of the pit will become fluid and flow into the pit with the groundwater. This phenomenon is called quicksand.

[0004] However, during the rainy season or when the groundwater is close to a water source, the permeability of the groundwater is high, which makes the quicksand phenomenon more serious, the bottom soil more loose, and it is more difficult to control the water level of the dewatering well, thus making it more difficult to seal. Therefore, a sealing device for deep foundation pit dewatering wells is proposed to address the above problems. Summary of the Invention

[0005] In order to overcome the shortcomings of the prior art and solve at least one of the technical problems mentioned in the background art, the present invention proposes a sealing device for deep foundation pit dewatering wells.

[0006] The technical solution adopted by this invention to solve its technical problem is as follows: A deep foundation pit dewatering well sealing device of this invention includes a base; a fixing frame is bolted to the top of the base; a winch is fixed to the top of the fixing frame; a steel wire rope is fixed to the winch; a first fixing seat is fixed to the bottom end of the steel wire rope; a telescopic rod is fixed to the bottom of the first fixing seat; a second fixing seat is fixed to the bottom end of the telescopic rod; both the first and second fixing seats have cavities inside; multiple sliding holes are formed on the side of the cavities; a screw is rotatably connected to the center of each sliding hole; a first gear is fixed to one end of the screw near the cavity; a drive motor is fixed to the top of the cavity; and a second gear is fixed to the output end of the drive motor. Two gears; the first gear and the second gear mesh with each other; multiple connecting seats are slidably connected to the bottom of both the first and second fixed seats; a screw cylinder is fixedly connected to the middle of the connecting seat; the screw cylinder is slidably connected to the sliding hole; the screw rod and the screw cylinder are connected by threads; a first bracket is fixedly connected to the side of the connecting seat on the first fixed seat; a second bracket is fixedly connected to the side of the connecting seat on the second fixed seat; a sealing assembly is provided on the first bracket. Based on the above arrangement, the fixed plate and the sealing plate are combined into a ring-shaped pipe. The ring-shaped pipe fits into the inside of the dewatering well, thereby blocking groundwater and facilitating subsequent control of lowering the water level, thus facilitating the subsequent well sealing process.

[0007] Preferably, the sealing assembly includes a sealing plate; the sealing plate is located on the side of the second bracket; a fixing plate is provided on the side of the first bracket; multiple hooks are fixedly connected to the sealing plate and the fixing plate near the telescopic rod; multiple hanging holes are provided at the bottom of the first bracket and the second bracket at positions corresponding to the hooks; the hooks are inserted into the hanging holes and slidably connected thereto; a pair of clamping plates are fixedly connected to the side of the sealing plate near the first fixing seat; the clamping plates are L-shaped plates.

[0008] Preferably, a worm gear is rotatably connected to the base; a ring is fixedly connected to the bottom of the worm gear; multiple sliding grooves are formed on the ring; multiple through grooves are formed at the bottom of the base; a fastening rod is slidably connected in the through groove; a pulley is rotatably connected to the top side of the fastening rod; the pulley is located in the sliding groove; a worm is rotatably connected to the top of the base; the worm and the worm gear mesh with each other. Based on the above configuration, the fastening rod is secured to the inner wall of the wellhead sleeve of the dewatering well, thereby fixing the base, improving its stability, and reducing slippage during construction.

[0009] Preferably, the fixing plate has grooves on both sides; a support cover is slidably connected in the groove; an expansion pack is provided in the groove; a sliding groove is provided on the side of the groove; and multiple water inlet grooves are provided between the sliding groove and the groove. Based on the above configuration, the support cover is pushed to slide out of the groove. Under the action of the support cover, the fixing plate is tightly attached to the card plate, thereby improving the sealing effect at the connection between the sealing plate and the fixing plate.

[0010] Preferably, a perforated rod is slidably connected within the sliding groove; a connecting groove is provided on the perforated rod; a spring is fixedly connected between the top end of the perforated rod and the top side of the sliding groove; a vibrating plate is fixedly connected to the inner wall of the connecting groove. With the above arrangement, the situation where the expansion pack expands prematurely due to water ingress, making it difficult to install the fixing plate can be reduced.

[0011] Preferably, multiple fixed rods are fixedly connected to the second support; a sliding rod is slidably connected to the side of the fixed rod near the second fixed seat; multiple inclined rods are fixedly connected to the side of the sliding rod near the second fixed seat; multiple tamping rods are slidably connected to the side of the fixed rod; the tamping rods are inclined; a tamping block is fixedly connected to the top of the tamping rod; the tamping rod is an L-shaped rod; the bottom of the tamping rod is located between the inclined rod and the sliding rod. Based on the above configuration, the soil density can be improved, thereby reducing permeability, increasing the soil strength, and facilitating sealing.

[0012] Preferably, the sealing plate has multiple vertical holes; an oblique hole is formed on the side of the vertical holes away from the second fixing seat; a push rod is slidably connected in the vertical holes; multiple elastic inserts are fixedly connected to the surface of the push rod; the top of the elastic insert is inserted into the oblique hole and slidably connected thereto. By relying on the dense elastic inserts inserted into the soil layer, the sealing plate can be fixed and the soil layer can be fixed at the same time.

[0013] Preferably, a guide plate is fixedly connected to the top of the first fixed seat; vertical rods are fixedly connected to both sides of the guide plate; a guide rod is threadedly connected to the top of the vertical rod; a sliding sleeve is fixedly connected to the top of the fixed frame at the position corresponding to the guide rod; the sliding sleeve is slidably connected to the guide rod, and the guide rod and the sliding sleeve cooperate to guide and support the first fixed seat and the second fixed seat, reducing their shaking.

[0014] Preferably, a rubber membrane is fixedly connected to the end of the inclined hole away from the vertical hole; a pad rod is slidably connected to the side of the fixing rod away from the first fixing seat; rubber pads are fixedly connected to both sides of the fixing plate. In use, the rubber membrane seals the top of the inclined hole, and the inclined rod extends to puncture the rubber membrane. Relying on the rubber membrane, mud and sand can be reduced from entering the inclined hole, thereby preventing the elastic rod from getting stuck in the inclined hole and facilitating the extension of the inclined rod.

[0015] Preferably, a connecting rope is fixed to the bottom side of the second fixing seat; an electromagnet is fixed to the bottom end of the connecting rope; multiple slots are provided at the bottom of the electromagnet; a lower sealing plate is provided at the bottom of the electromagnet; multiple insert plates are fixed to the top of the lower sealing plate at positions corresponding to the slots, and the lower sealing plate is used to pad the bottom of the dewatering well to reduce sealing and blockage, thereby reducing water gushing up from the bottom.

[0016] The advantages of this invention are:

[0017] 1. This invention comprises a first fixed seat, a second fixed seat, a drive motor, a first gear, a second gear, a screw, a connecting seat, a screw cylinder, a telescopic rod, a first bracket, a second bracket, a screw cylinder, a sealing plate, and a fixed plate. Based on the above arrangement, the fixed plate and the sealing plate are assembled into a ring-shaped pipe. This ring-shaped pipe fits into the interior of the dewatering well, thereby blocking groundwater and facilitating subsequent control of water level reduction, thus facilitating the subsequent well sealing process. Simultaneously, it provides support to soft soil layers, reducing the occurrence of quicksand.

[0018] 2. This invention, by setting up a fixed rod, a tamping rod, a tamping block, a sliding rod, and an inclined rod, allows the sealing plate to be attached to the well wall during use. At this time, the fixed rod supports and fixes the sealing plate. Then, the operator can control the winch to move the second fixed seat downward a certain distance. Then, the fixed rod and the tamping rod move downward under the action of weight. The tamping rod, pushed by the inclined rod, pushes upward at an angle to strike the sealing plate, thereby tamping the soil layer of the well wall. The sealing plate supports the soil layer, thereby increasing the soil density, reducing permeability, and increasing the soil strength. Attached Figure Description

[0019] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0020] Figure 1 This is a schematic diagram of the structure of the present invention;

[0021] Figure 2 This is a schematic diagram of the base structure of the present invention;

[0022] Figure 3 This is a schematic diagram of the first fixing base structure of the present invention;

[0023] Figure 4 This is a schematic diagram of the second fixing base structure of the present invention;

[0024] Figure 5 This is a schematic diagram of the sealing plate structure of the present invention;

[0025] Figure 6 This is a schematic diagram of the fixing plate structure of the present invention;

[0026] Figure 7 This is a schematic cross-sectional view of the sealing plate of the present invention;

[0027] Figure 8 for Figure 7 A magnified view of a portion of point A in the middle.

[0028] In the diagram: 11. Base; 12. Winch; 13. First fixed seat; 14. Telescopic rod; 15. Second fixed seat; 16. Drive motor; 17. Screw; 18. Connecting seat; 19. Screw barrel; 191. First bracket; 192. Second bracket; 21. Sealing plate; 22. Fixed plate; 23. Hook; 24. Clamping plate; 31. Ring body; 32. Worm gear; 33. Worm; 34. Fastening rod; 35. Slide groove; 41. Support 42. Support cover; 43. Sliding groove; 51. Expansion pack; 52. Perforated rod; 53. Connecting groove; 54. Vibrating plate; 65. Fixing rod; 66. Sliding rod; 67. Diagonal rod; 68. Hammering rod; 69. Hammering block; 70. Guide plate; 71. Vertical rod; 72. Guide rod; 83. Push rod; 84. Elastic insertion rod; 95. Rubber diaphragm; 96. Pad rod; 97. Rubber pad; 108. Electromagnet; 109. Lower sealing plate; 100. Insert plate. Detailed Implementation

[0029] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0030] Specific implementation examples are given below.

[0031] Please see Figure 1-5As shown, a deep foundation pit dewatering well sealing device includes a base 11; a fixing frame is bolted to the top of the base 11; a winch 12 is fixed to the top of the fixing frame; a wire rope is fixed to the winch 12; a first fixing seat 13 is fixed to the bottom end of the wire rope; a telescopic rod 14 is fixed to the bottom of the first fixing seat 13; a second fixing seat 15 is fixed to the bottom end of the telescopic rod 14; both the first fixing seat 13 and the second fixing seat 15 have cavities inside; multiple sliding holes are formed on the side of the cavities; a screw 17 is rotatably connected to the middle of the sliding holes; a first gear is fixed to one end of the screw 17 near the cavity; a drive motor 16 is fixed to the top of the cavity; a second gear is fixed to the output end of the drive motor 16; the first gear and the second gear mesh with each other; multiple connecting seats 18 are slidably connected to the bottom of both the first fixing seat 13 and the second fixing seat 15; the connecting seats 18... A screw cylinder 19 is fixedly connected to the middle; the screw cylinder 19 is slidably connected to the sliding hole; the screw rod 17 is threadedly connected to the screw cylinder 19; a first bracket 191 is fixedly connected to the side of the connecting seat 18 located on the first fixed seat 13; a second bracket 192 is fixedly connected to the side of the connecting seat 18 located on the second fixed seat 15; a sealing assembly is provided on the first bracket 191; the sealing assembly includes a sealing plate 21; the sealing plate 21 is located on the side of the second bracket 192; a fixing plate 22 is provided on the side of the first bracket 191; multiple hooks 23 are fixedly connected to the side of the sealing plate 21 and the fixing plate 22 near the telescopic rod 14; multiple hanging holes are opened at the bottom of the first bracket 191 and the second bracket 192 corresponding to the positions of the hooks 23; the hooks 23 are inserted into the hanging holes and slidably connected to them; a pair of clamping plates 24 are fixedly connected to the side of the sealing plate 21 near the first fixed seat 13; the clamping plates 24 are L-shaped plates.

[0032] In use, the base 11 is suspended and placed on the steel casing at the top of the dewatering well. Then, the sealing plate 21 and the fixing plate 22 are hung on the first bracket 191 and the first bracket 191 respectively. The hook 23 is inserted into the hanging hole. The hook 23 and the hanging hole cooperate to fix the sealing plate 21 and the fixing plate 22. After the sealing plate 21 and the fixing plate 22 are installed, the winch 12 is controlled. The motor and drive motor 16 of the winch 12 are both servo motors. The winch 12 places the first fixing seat 13 and the second fixing seat 15 into the... At the bottom of the dewatering well, the drive motor 16 is then started. The drive motor 16 uses a second gear to drive multiple first gears and multiple screws 17 to rotate. With the cooperation of the screws 17 and the screw barrel 19, the rotation of the screws 17 drives the connecting seat 18, the sealing plate 21, and the fixing plate 22 to move towards the well wall of the dewatering well, so that the surface of the sealing plate 21 is attached to the well wall. After the sealing plate 21 is attached, the winch 12 is controlled to continue to lower the first fixing seat 13, and the telescopic rod 14 is shortened, thereby fixing the... Plate 22 moves downward and inserts into clamping plate 24, thereby forming a ring-shaped pipe with fixing plate 22 and sealing plate 21. The ring-shaped pipe fits against the inside of the dewatering well, thus blocking groundwater and facilitating subsequent control of water level reduction, which in turn facilitates the subsequent well sealing process. It also supports the loose soil layer and reduces the occurrence of quicksand. After the sealing plate 21 and fixing plate 22 are assembled, the winch 12 is controlled to continue lowering the first fixing seat 13, and then the second fixing seat 15 contacts the bottom of the well. The first bracket 191 and the second bracket 192 separate from the hook 23. Then, the drive motor 16 is controlled to rotate in the opposite direction, so that the connecting seat 18, the first bracket 191 and the second bracket 192 are reset. Finally, the winch 12 is used to lift the first fixing seat 13 and the second fixing seat 15 out of the dewatering well, thus completing the reset of the device. In the initial state, fixing plate 22 is aligned and placed directly above clamping plate 24, so that fixing plate 22 can be inserted into clamping plate 24 later.

[0033] Furthermore, such as Figure 1-3As shown, a worm gear 32 is rotatably connected to the base 11; a ring 31 is fixedly connected to the bottom of the worm gear 32; multiple sliding grooves 35 are provided on the ring 31; multiple through grooves are provided at the bottom of the base 11; a fastening rod 34 is slidably connected in the through groove; a pulley is rotatably connected to the top side of the fastening rod 34; the pulley is located in the sliding groove 35; a worm 33 is rotatably connected to the top of the base 11; the worm 33 meshes with the worm gear 32; during installation, after the base 11 is suspended on the wellhead sleeve of the dewatering well, the operator manually rotates the worm 33 to drive the worm gear 32 and the ring 31 to rotate. The rotation of the ring 31 drives the pulley in the sliding groove 35 to slide along the through groove, thereby causing the fastening rod 34 to be locked on the inner wall of the wellhead sleeve of the dewatering well, thus fixing the base 11, improving the stability of the base 11, and reducing shaking during construction.

[0034] Furthermore, such as Figure 5-6 As shown, the fixing plate 22 has grooves on both sides; a support cover 41 is slidably connected in the groove; an expansion pack 43 is provided in the groove; a sliding groove 42 is provided on the side of the groove; multiple water inlet grooves are provided between the sliding groove 42 and the groove; in use, water enters the groove from the sliding groove 42 and the water inlet grooves, and is then absorbed by the expansion pack 43. The expansion pack 43 is filled with absorbent resin or water-stopping adhesive, which expands after absorbing water, causing the expansion pack 43 to rupture, and then pushes the support cover 41 to slide out of the groove. Under the action of the support cover 41, the fixing plate 22 is tightly attached to the clamping plate 24, which can improve the sealing effect at the connection between the sealing plate 21 and the fixing plate 22, improve the overall fixing effect, and leave a large gap between the clamping plate 24 and the sealing plate 21 to facilitate the insertion of the fixing plate 22 and facilitate installation.

[0035] Furthermore, such as Figure 5-6As shown, a perforated rod 51 is slidably connected inside the sliding groove 42; a connecting groove 52 is provided on the perforated rod 51; a spring is fixed between the top end of the perforated rod 51 and the top side of the sliding groove 42; a vibrating plate 53 is fixed to the inner wall of the connecting groove 52; in use, after the fixing plate 22 is fully inserted, the perforated rod 51 at the bottom of the fixing plate 22 contacts the bottom of the well, and then the fixing rod 61 slides upward along the sliding groove 42, so that the connecting groove 52 on the perforated rod 51 connects with the water inlet groove, and at this time, a large amount of water enters the groove, which can reduce the situation where the expansion pack 43 expands too early due to water intake, making it difficult to install the fixing plate 22. At the same time, the filling material of the expansion pack 43 will be sprayed out through the connecting groove 52 to fill the gap between the fixing plate 22 and the well wall, improve the support and sealing effect of the well wall. During the spraying process, the vibrating plate 53 will vibrate to a certain extent. The vibrating plate 53 is made of elastic material, which can disrupt the jet and increase the area and range of the spray.

[0036] Furthermore, such as Figure 4 As shown, multiple fixing rods 61 are fixedly connected to the second bracket 192; a sliding rod 62 is slidably connected to the side of the fixing rod 61 near the second fixing seat 15; multiple inclined rods 63 are fixedly connected to the side of the sliding rod 62 near the second fixing seat 15; multiple tamping rods 64 are slidably connected to the side of the fixing rod 61; the tamping rods 64 are inclined; a tamping block 65 is fixedly connected to the top of the tamping rod 64; the tamping rod 64 is an L-shaped rod; the bottom of the tamping rod 64 is located between the inclined rod 63 and the sliding rod 62; in use, after the sealing plate 21 is in contact with the well wall, the fixing rods 61 support and fix the sealing plate 21. 1. Then, the operator can control the winch 12 to move the second fixed seat 15 downward a certain distance. Then, the fixed rod 61 and the tamping rod 64 move downward under the weight. The tamping rod 64 is pushed upward by the inclined rod 63 to strike the sealing plate 21, thereby tamping the soil layer of the well wall. The sealing plate 21 supports the soil layer, thereby increasing the soil density, reducing permeability, increasing the soil strength, and facilitating sealing. A pressure sensor is installed on the second bracket 192 to control the drive motor 16 at any time, so that the sealing plate 21 maintains support for the well wall during the tamping process.

[0037] Furthermore, such as Figure 7-8As shown, the sealing plate 21 has multiple vertical holes; an oblique hole is formed on the side of the vertical hole away from the second fixing seat 15; a push rod 81 is slidably connected in the vertical hole; multiple elastic inserts 82 are fixedly connected to the surface of the push rod 81; the top of the elastic insert 82 is inserted into the oblique hole and slidably connected thereto; in use, the sealing plate 21 is attached to the well wall, and as the sealing plate 21 falls to the bottom of the well, the push rod 81 contacts the bottom of the well, thereby causing the push rod 81 to move upward in the vertical hole, thereby causing the push rod 81 and the elastic insert 82 to move, and the elastic insert 82 extends along the vertical hole and inserts into the soil layer of the well wall. By relying on the dense insertion of the elastic insert 82 into the soil layer, the sealing plate 21 can be fixed, and the soil layer can be fixed at the same time.

[0038] Furthermore, such as Figure 1-3 As shown, a guide plate 71 is fixedly connected to the top of the first fixed base 13; vertical rods 72 are fixedly connected to both sides of the guide plate 71; a guide rod 73 is threadedly connected to the top of the vertical rod 72; a sliding sleeve is fixedly connected to the top of the fixed frame at the corresponding position of the guide rod 73; the sliding sleeve is slidably connected to the guide rod 73; in use, the top of the vertical rod 72 is threaded to tighten and fix multiple guide rods 73 to form a vertical rod. The guide rods 73 cooperate with the sliding sleeve to guide and support the first fixed base 13 and the second fixed base 15, reducing their shaking. This facilitates the splicing between the sealing plate 21 and the fixed plate 22 and improves stability.

[0039] Furthermore, such as Figure 3 , 5 As shown in Figure 8, a rubber membrane 91 is fixedly connected to the end of the inclined hole away from the vertical hole; a pad rod 92 is slidably connected to the side of the fixing rod 61 away from the first fixing seat 13; rubber pads 93 are fixedly connected to both sides of the fixing plate 22; in use, the rubber membrane 91 seals the top of the inclined hole, and the inclined rod 63 extends to puncture the rubber membrane 91. Relying on the rubber membrane 91, it can reduce the entry of mud and sand into the inclined hole, thereby preventing the elastic insertion rod 82 from getting stuck in the inclined hole, thus facilitating the extension of the inclined rod 63. In use, the pad rod 92 is attached to the surface of the sealing plate 21 to support the sealing plate 21, separating the fixing rod 61 from the sealing plate 21, reducing the friction of the sliding of the fixing rod 61, and reducing the impact on the sealing plate 21 during the sliding process. In use, the rubber pad 93 can improve the fit between the fixing plate 22 and the inner wall of the clamping plate 24, thereby improving the sealing effect at the connection.

[0040] Furthermore, such as Figure 3As shown, a connecting rope is fixed to the bottom side of the second fixed base 15; an electromagnet 101 is fixed to the bottom end of the connecting rope; multiple slots are provided at the bottom of the electromagnet 101; a lower sealing plate 102 is provided at the bottom of the electromagnet 101; multiple insert plates 103 are fixed to the top of the lower sealing plate 102 at positions corresponding to the slots; during hoisting, the lower sealing plate 102 is attracted by the magnetic force of the electromagnet 101. After being placed into the dewatering well, the electromagnet 101 is disconnected, and the lower sealing plate 102 is placed at the bottom of the dewatering well to reduce the sealing and blocking effect, thereby reducing water surging from the bottom. The slots and insert plates 103 cooperate to increase the contact area and reduce the amount of mud and sand mixed in between the electromagnet 101 and the lower sealing plate 102, which would otherwise reduce the magnetic attraction performance.

[0041] Working principle: During use, the base 11 is suspended and placed on the steel casing at the top of the dewatering well. Then, the sealing plate 21 and the fixing plate 22 are respectively hung on the first bracket 191. The hook 23 is inserted into the hanging hole, and the hook 23 and the hanging hole cooperate to fix the sealing plate 21 and the fixing plate 22. After the sealing plate 21 and the fixing plate 22 are installed, the winch 12 is controlled. The motor of the winch 12 and the drive motor 16 are both servo motors. The winch 12 lowers the first fixing seat 13 and the second fixing seat 15 to the bottom of the dewatering well. Then, the drive motor 16 is started. The drive motor 16 is driven by the second gear. Multiple first gears and multiple screws 17 rotate. With the cooperation of the screws 17 and the screw barrel 19, the rotation of the screws 17 drives the connecting seat 18, the sealing plate 21, and the fixing plate 22 to move towards the well wall of the dewatering well. Then, the surface of the sealing plate 21 adheres to the well wall. After the sealing plate 21 is in contact with the well wall, the winch 12 continues to lower the first fixing seat 13, and the telescopic rod 14 shortens, causing the fixing plate 22 to move downwards and insert into the clamping plate 24. This forms a ring-shaped pipe fitting between the fixing plate 22 and the sealing plate 21, which adheres to the inside of the dewatering well, thus blocking underground water. The water serves to facilitate subsequent control and lowering of the water level, thus facilitating the well sealing process. It also provides support to the loose soil layer, reducing quicksand. After the sealing plate 21 and fixing plate 22 are assembled, the winch 12 continues to lower the first fixing seat 13, then the second fixing seat 15 contacts the bottom of the well. The first support 191 and the second support 192 separate from the hook 23. Then, the drive motor 16 is controlled to rotate in the opposite direction, resetting the connecting seat 18, the first support 191, and the second support 192. Finally, the winch 12 is used to lower the first fixing seat 13 and the second fixing seat 15 from the water level. The device is lifted out of the well to complete the reset. In the initial state, the fixing plate 22 is aligned and placed directly above the clamping plate 24 so that the fixing plate 22 can be inserted into the clamping plate 24 later. During hoisting, the lower sealing plate 102 is attracted by the magnetic force of the electromagnet 101. After being placed into the dewatering well, the electromagnet 101 is disconnected and the lower sealing plate 102 is placed at the bottom of the dewatering well to reduce the sealing and plugging, and reduce water from rising from the bottom. The slot cooperates with the insertion plate 103 to increase the contact area and reduce the amount of mud and sand mixed in between the electromagnet 101 and the lower sealing plate 102, thus reducing the decrease in magnetic attraction performance.

[0042] During installation, after the base 11 is suspended on the wellhead sleeve of the dewatering well, the workers manually rotate the worm gear 33 to drive the worm wheel 32 and the ring 31 to rotate. The rotation of the ring 31 drives the pulley in the slide groove 35 to slide along the through groove, so that the fastening rod 34 is locked on the inner wall of the wellhead sleeve of the dewatering well, thereby fixing the base 11, improving the stability of the base 11, and reducing the shaking during construction. The top of the vertical rod 72 is screwed with threads to fix multiple guide rods 73 to form a vertical rod. The guide rods 73 cooperate with the slide sleeve to guide and support the first fixed seat 13 and the second fixed seat 15, reducing their shaking. This facilitates the splicing between the sealing plate 21 and the fixed plate 22, and improves stability.

[0043] During use, water enters the groove from the sliding groove 42 and the water inlet groove, and is absorbed by the expansion pack 43. The expansion pack 43 is filled with absorbent resin or water-stopping adhesive, which expands after absorbing water, causing the expansion pack 43 to rupture. This pushes the support cover 41 to slide out of the groove. Under the action of the support cover 41, the fixing plate 22 is tightly attached to the clamping plate 24, thereby improving the sealing effect at the connection between the sealing plate 21 and the fixing plate 22, improving the overall fixing effect, and leaving a larger gap between the clamping plate 24 and the sealing plate 21 to facilitate the insertion of the fixing plate 22 and facilitate installation. Once the fixing plate 22 is fully inserted, the... The perforated rod 51 at the bottom of the fixed plate 22 contacts the bottom of the well, and then the fixed rod 61 slides upward along the sliding groove 42, so that the connecting groove 52 on the perforated rod 51 connects with the water inlet groove. At this time, a large amount of water enters the groove, which can reduce the expansion pack 43 from expanding too early and making it difficult to install the fixed plate 22. At the same time, the filling material of the expansion pack 43 will be sprayed out through the connecting groove 52 to fill the gap between the fixed plate 22 and the well wall, improve the support and sealing effect of the well wall. During the spraying process, it will drive the vibrating plate 53 to vibrate. The vibrating plate 53 is made of elastic material to disrupt the jet and increase the area and range of the spray.

[0044] When in use, after the sealing plate 21 is attached to the well wall, the fixing rod 61 supports and fixes the sealing plate 21. Then, the operator can control the winch 12 to make the second fixing seat 15 continue to move downward a certain distance. Then, the fixing rod 61 and the tamping rod 64 move downward under the weight. The tamping rod 64 is pushed upward by the inclined rod 63 to hit the sealing plate 21, thereby tamping the soil layer of the well wall. The sealing plate 21 supports the soil layer, thereby increasing the soil density, reducing permeability, increasing the soil strength, and facilitating sealing. A pressure sensor is installed on the second bracket 192 to control the drive motor 16 at any time, so that the sealing plate 21 maintains support for the well wall during the tamping process.

[0045] After the sealing plate 21 is attached to the well wall, as it falls to the bottom of the well, the push rod 81 contacts the bottom, causing it to move upward within the vertical hole. This movement of the push rod 81 and the elastic insertion rod 82 further propels the push rod 81 and inserts it into the soil layer of the well wall. The dense arrangement of the elastic insertion rods 82 within the soil layer effectively secures the sealing plate 21 and also stabilizes the soil layer. During use, the rubber membrane 91 seals the top of the inclined hole, and the inclined rod 63 extends to puncture the rubber membrane 91. The rubber membrane 91 helps to reduce the amount of mud and sand entering the inclined hole, thus preventing the elastic rod 82 from getting stuck in the inclined hole and facilitating the extension of the inclined rod 63. During use, the pad rod 92 is attached to the surface of the sealing plate 21 to support the sealing plate 21, separate the fixing rod 61 from the sealing plate 21, reduce the friction of the fixing rod 61 sliding, and reduce the impact on the sealing plate 21 during sliding. During use, the rubber pad 93 can improve the fit between the fixing plate 22 and the inner wall of the clamping plate 24, thereby improving the sealing effect at the connection.

[0046] In the description of this specification, references to terms such as "an embodiment," "example," "specific example," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the invention. In this specification, illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0047] The foregoing has shown and described the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of the invention. Various changes and modifications can be made to the invention without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed invention.

Claims

1. A sealing device for a deep foundation pit dewatering well, characterized in that: The system includes a base (11); a fixing frame is bolted to the top of the base (11); a winch (12) is fixed to the top of the fixing frame; a wire rope is fixed to the winch (12); a first fixing seat (13) is fixed to the bottom of the wire rope; a telescopic rod (14) is fixed to the bottom of the first fixing seat (13); a second fixing seat (15) is fixed to the bottom of the telescopic rod (14); both the first fixing seat (13) and the second fixing seat (15) have cavities inside; multiple sliding holes are opened on the side of the cavities; a screw (17) is rotatably connected to the middle of the sliding holes; a first gear is fixed to one end of the screw (17) near the cavity; and a drive motor is fixed to the top of the cavity. (16); The output end of the drive motor (16) is fixedly connected to a second gear; the first gear and the second gear mesh with each other; the bottom of the first fixed seat (13) and the second fixed seat (15) are slidably connected to multiple connecting seats (18); a screw cylinder (19) is fixedly connected to the middle of the connecting seat (18); the screw cylinder (19) is slidably connected to the sliding hole; the screw (17) and the screw cylinder (19) are connected by threads; a first bracket (191) is fixedly connected to the side of the connecting seat (18) located on the first fixed seat (13); a second bracket (192) is fixedly connected to the side of the connecting seat (18) located on the second fixed seat (15); a sealing component is provided on the first bracket (191); The sealing assembly includes a sealing plate (21); the sealing plate (21) is located on the side of the second bracket (192); the side of the first bracket (191) is provided with a fixing plate (22); the sealing plate (21) and the fixing plate (22) are fixedly connected to a plurality of hooks (23) on the side near the telescopic rod (14); the bottom of the first bracket (191) and the second bracket (192) are provided with a plurality of hanging holes at the positions corresponding to the hooks (23); the hooks (23) are inserted into the hanging holes and slidably connected thereto; a pair of clamping plates (24) are fixedly connected to the side of the sealing plate (21) near the first fixing seat (13); the clamping plates (24) are L-shaped plates.

2. The sealing device for a deep foundation pit dewatering well according to claim 1, characterized in that: A worm gear (32) is rotatably connected to the base (11); a ring (31) is fixed to the bottom of the worm gear (32); multiple sliding grooves (35) are provided on the ring (31); multiple through grooves are provided at the bottom of the base (11); a fastening rod (34) is slidably connected in the through groove; a pulley is rotatably connected to the top side of the fastening rod (34); the pulley is located in the sliding groove (35); a worm (33) is rotatably connected to the top of the base (11); the worm (33) meshes with the worm gear (32).

3. The sealing device for a deep foundation pit dewatering well according to claim 1, characterized in that: The fixing plate (22) has grooves on both sides; a support cover (41) is slidably connected in the groove; an expansion pack (43) is provided in the groove; a sliding groove (42) is provided on the side of the groove; and multiple water inlet grooves are provided between the sliding groove (42) and the groove.

4. The sealing device for a deep foundation pit dewatering well according to claim 3, characterized in that: A perforated rod (51) is slidably connected inside the sliding groove (42); a connecting groove (52) is provided on the perforated rod (51); a spring is fixed between the top end of the perforated rod (51) and the top side of the sliding groove (42); a vibrating plate (53) is fixed on the inner wall of the connecting groove (52).

5. The sealing device for a deep foundation pit dewatering well according to claim 1, characterized in that: Multiple fixing rods (61) are fixedly connected to the second bracket (192); a sliding rod (62) is slidably connected to the side of the fixing rod (61) near the second fixing seat (15); multiple inclined rods (63) are fixedly connected to the side of the sliding rod (62) near the second fixing seat (15); multiple tamping rods (64) are slidably connected to the side of the fixing rod (61); the tamping rods (64) are inclined; a tamping block (65) is fixedly connected to the top of the tamping rods (64); the tamping rods (64) are L-shaped rods; the bottom of the tamping rods (64) is located between the inclined rods (63) and the sliding rods (62).

6. The sealing device for a deep foundation pit dewatering well according to claim 5, characterized in that: The sealing plate (21) has multiple vertical holes; an oblique hole is provided on the side of the vertical hole away from the second fixed seat (15); a push rod (81) is slidably connected in the vertical hole; multiple elastic inserts (82) are fixedly connected to the surface of the push rod (81); the top end of the elastic insert (82) is inserted into the oblique hole and slidably connected thereto.

7. The sealing device for a deep foundation pit dewatering well according to claim 1, characterized in that: A guide plate (71) is fixedly connected to the top of the first fixed base (13); vertical rods (72) are fixedly connected to both sides of the guide plate (71); a guide rod (73) is threadedly connected to the top of the vertical rod (72); a sliding sleeve is fixedly connected to the top of the fixed frame at the position corresponding to the guide rod (73); the sliding sleeve is slidably connected to the guide rod (73).

8. A sealing device for a deep foundation pit dewatering well according to claim 6, characterized in that: A rubber membrane (91) is fixed to the end of the inclined hole away from the vertical hole; a pad rod (92) is slidably connected to the side of the fixing rod (61) away from the first fixing seat (13); rubber pads (93) are fixed to both sides of the fixing plate (22).

9. A sealing device for a deep foundation pit dewatering well according to claim 1, characterized in that: A connecting rope is fixed to the bottom side of the second fixing seat (15); an electromagnet (101) is fixed to the bottom end of the connecting rope; multiple slots are provided at the bottom of the electromagnet (101); a lower sealing plate (102) is provided at the bottom of the electromagnet (101); multiple insert plates (103) are fixed to the top of the lower sealing plate (102) at the corresponding position of the slots.

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