Building foundation pit construction equipment for underground engineering

Abstract

The invention relates to the technical field of foundation pit construction equipment, and discloses building foundation pit construction equipment for underground engineering, which comprises a first mounting plate, the first mounting plate is a rectangular plate, a circular through hole is formed in the center of the first mounting plate, and two first mounting frames are symmetrically and fixedly mounted on the bottom side of the first mounting plate; two first connecting plates are fixedly mounted at the upper end of the first mounting plate, second mounting plates are fixedly mounted at the upper ends of the two first connecting plates, detachable third mounting plates are arranged on the sides, corresponding to each other, of the two second mounting plates, and a second mounting frame is fixedly mounted at the upper ends of the two second mounting plates. According to the device, an arc-shaped structure formed by a second extrusion plate and a third extrusion plate can smoothly and preliminarily extrude the lower wall surface when the third extrusion plate moves downwards, and rotates and moves downwards while extruding to uniformly extrude the side wall of a foundation pit, so that compactness and smoothness of soil on the inner wall of the foundation pit are facilitated, and the construction efficiency is improved. And comprehensive construction of the inner wall of the foundation pit is ensured.

Description

Technical Field

[0001] The present invention relates to the technical field of foundation pit construction equipment, and in particular to a foundation pit construction equipment for underground engineering. Background Art

[0002] The foundation pit is a pit dug at the foundation's designed location according to the base elevation and foundation plane dimensions. Before excavation, the excavation plan should be determined based on geological and hydrological data, combined with the conditions of nearby buildings, and proper waterproofing and drainage. For shallow excavations, side slopes can be used to stabilize the soil slope, with the slope gradient determined according to relevant construction regulations. For deeper excavations or those with nearby buildings, foundation pit wall support can be used to prevent the outer soil layer from collapsing.

[0003] During the construction of existing building foundation pits, various protrusions appear on the inner wall of the foundation pit during the excavation process, and the soil on the inner wall of the foundation pit is not compact enough and is prone to collapse, affecting the safety of subsequent foundation pit construction. After the construction is completed, the structure that squeezes the soil remains at the bottom of the foundation pit, which has a limited support range and poor support capacity. After rain, water will accumulate inside the foundation pit, and a water pump with a long external pipe needs to be used to extend into the bottom of the tunnel to extract the accumulated water. During the movement, the external pipe is too long and inconvenient to move, which affects the pumping efficiency. For this reason, we propose a construction equipment for building foundation pits for underground projects. Summary of the Invention

[0004] The present invention mainly aims to solve the technical problems existing in the above-mentioned prior art and provides a construction equipment for foundation pit of underground engineering.

[0005] In order to achieve the above-mentioned purpose, the present invention adopts the following technical scheme: a construction pit construction equipment for underground engineering, comprising a first mounting plate, the first mounting plate is a rectangular plate and a circular through hole is opened at the center position, two first mounting brackets are symmetrically fixedly installed on the bottom side of the first mounting plate, two first connecting plates are fixedly installed on the upper end of the first mounting plate, a second mounting plate is fixedly installed on the upper end of the two first connecting plates, a detachable third mounting plate is provided on the side corresponding to each other of the two second mounting plates, a second mounting bracket is fixedly installed on the upper end of the two second mounting plates, a second guide hole is opened at the center position of the third mounting plate, mounting seats are fixedly installed at the positions corresponding to the second guide hole on the upper and lower sides of the third mounting plate, the internal threads of the two mounting seats are connected with a rotatable threaded rod, the lower end of the threaded rod is fixedly installed with a first connecting block, and the outer side of the threaded rod is slidably installed with three mounting columns, and the mounting columns The center position of the first adapter groove is provided, the threaded rod is slidably installed in the inside of the first adapter groove, and both ends of the mounting post are provided with movable holes, and a sliding cylinder is slidably installed in the movable hole, and the first extrusion plate, the second extrusion plate and the third extrusion plate are fixedly installed on the side of the three longitudinally distributed sliding cylinders away from the mounting post, and the adapter plate is fixedly installed on the bottom side of the third extrusion plate, and a mounting groove is provided on the side of the mounting post, and a battery-driven motor is fixedly installed inside the mounting groove, and a rotating threaded column is fixedly installed on the output end of the battery-driven motor, and a sliding block with transverse movement is threadedly connected to the rotating threaded column, and a first mounting cavity is provided at both ends of the sliding block, and a second connecting block is fixedly installed on one side of the sliding cylinder, and a second connecting column is provided on the side of the second connecting block, and the corresponding first mounting cavities and the second connecting columns are movably connected through movable parts, and the bottom sides of the two third extrusion plates are fixedly installed with adapter plates.

[0006] Preferably, a third mounting bracket is fixedly installed on the side of the threaded rod, a fixed battery-driven telescoping device is arranged inside the third mounting bracket, and the output end of the battery-driven telescoping device is fixedly installed on the side of the three mounting columns, respectively fixedly installed on the third connecting tube, the fourth connecting tube, the third connecting tube and the fifth connecting tube, the fourth connecting tube, the third connecting tube and the fifth connecting tube are all "U"-shaped blocks and the output end of the telescopic rod passes through the interior of the third connecting tube, the fourth connecting tube and the fifth connecting tube, a first limiting groove is provided at the bottom of the fourth connecting tube, a second limiting groove is provided at the bottom of the fifth connecting tube, a first limiting block corresponding to the bottom of the fifth connecting tube is fixedly installed on the side of the telescopic rod corresponding to the bottom of the fifth connecting tube, the first limiting groove extends to the center position of the inside of the fourth connecting tube, the second limiting groove extends to the upper position of the fifth connecting tube, and the third limiting block is fixedly installed on the side of the telescopic rod corresponding to the bottom of the third connecting tube.

[0007] Preferably, a fourth limiting block is fixedly installed on the side surface of the telescopic rod corresponding to the upper part of the third connecting tube, and the fourth limiting block is a rectangular block.

[0008] Preferably, second adapting grooves are equidistantly provided on the upper side of the second extrusion plate, and first connecting pressure plates are fixed at positions corresponding to the second adapting grooves on the bottom side of the first extrusion plate, and the first connecting pressure plates extend to the inside of the second adapting grooves. Third adapting grooves are equidistantly provided on the upper end of the third extrusion plate, and second connecting pressure plates are fixedly installed at positions corresponding to the third adapting grooves on the lower end of the second extrusion plate, and the second connecting pressure plates extend to the inside of the third adapting grooves.

[0009] Preferably, an adaptation hole is provided at the upper end of the threaded rod, and the adaptation hole passes through the interior of the threaded rod and the first connecting block. A rotating motor is fixedly installed on the side of the second mounting frame corresponding to the position of the adaptation hole, and an adaptation rod is fixedly installed on the output end of the rotating motor. The adaptation rod extends to the interior of the adaptation hole and is slidably installed inside the adaptation hole. Grooves are provided on the upper sides of the two second mounting plates, and a clamping block is clamped at the position corresponding to the groove of the third mounting plate. A threaded hole is provided on the upper side of the clamping block, and the threaded hole passes through the clamping block and the second mounting plate. The internal thread of the threaded hole is connected to a locking threaded column.

[0010] Preferably, the movable part includes a first connecting column fixedly installed inside the two first installation cavities, a second connecting column fixedly installed inside the second installation cavity, a first connecting tube movably installed on the outside of the second connecting column, a second connecting plate fixedly installed on the side of the first connecting tube, a second connecting tube fixedly installed on the end of the second connecting plate away from the first connecting tube, and the second connecting tube movably installed on the outside of the first connecting column.

[0011] Preferably, two third limit grooves are symmetrically provided on the side of the sliding block, and a fifth limit block is fixedly installed on the side wall of the battery-driven motor at the position corresponding to the third limit groove. The fifth limit block passes through the third limit groove, and two protrusions are symmetrically fixedly installed on the side of the fifth limit block.

[0012] Preferably, the adapter plate is an arc-shaped block, and the two adapter plates are distributed in a mirror-image manner on the bottom sides of the two third extrusion plates.

[0013] Preferably, a detachable extrusion plate is installed on the bottom side of one of the two adapter plates, and the extrusion plate is a circular plate.

[0014] Preferably, sliding grooves are equidistantly provided on the inner side of the first adapting groove and the inner side of the sliding cylinder, and a sliding block is fixedly installed on the outer side of the threaded rod at a position corresponding to the sliding groove, and the sliding block is slidably installed inside the sliding groove.

[0015] Beneficial effects

[0016] The present invention provides a construction equipment for underground construction foundation pits. It has the following beneficial effects:

[0017] (1) The construction equipment for underground construction pits rotates inside the mounting seat through the adapter hole while moving downward, and the three mounting columns are driven to rotate by the rotating adapter hole. The three mounting columns respectively squeeze the inner wall of the pit through two corresponding first squeezing plates, a second squeezing plate and a third squeezing plate. The arc structure formed by the second squeezing plate and the third squeezing plate can smoothly squeeze the lower wall surface when the third squeezing plate moves downward, and rotates downward while squeezing to squeeze the side wall of the pit evenly, thereby helping to make the soil on the inner wall of the pit compact and smooth, and ensuring the comprehensive construction of the inner wall of the pit.

[0018] (2) The construction equipment for underground engineering foundation pit squeezes the inner wall of the foundation pit. When the telescopic rod moves upward, the movable distances of the third connecting tube, the fourth connecting tube and the fifth connecting tube are controlled by setting the movable distances of the second limit block, the third limit block and the first limit block, thereby adjusting the support positions of the first extrusion plate, the second extrusion plate and the third extrusion plate. The gap between the first extrusion plate and the second extrusion plate is filled by the first connecting pressure plate, and the gap between the second extrusion plate and the third extrusion plate is filled by the second connecting pressure plate, thereby improving the support strength.

[0019] (3) The construction equipment for the foundation pit of an underground project is used to dismantle the first mounting frame after support, and then separate the second mounting plate and the third mounting plate. The second mounting frame is lifted up by a machine, and the adapter rod is separated from the inside of the adapter hole. The first mounting frame, the first mounting plate, the first connecting plate, the second mounting plate and the second mounting frame are separated. During the support process, when water is poured into the foundation pit, the upper end of the threaded rod is connected to the water suction pump. At this time, the water can be pumped out through the adapter hole inside the threaded rod. At this time, only a water pump plus a flange connected to the upper end of the threaded rod and the threaded rod are needed to connect to each other to pump the water inside the foundation pit, which facilitates the rapid movement of the water pump and improves the efficiency of water pumping. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] To more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for the embodiments or the description of the prior art. Obviously, the drawings described below are merely illustrative, and those skilled in the art can derive other implementation drawings based on the provided drawings without inventive effort.

[0021] The structures, proportions, sizes, etc. illustrated in this specification are intended solely to complement the contents disclosed herein and to facilitate understanding and reading by persons skilled in the art. They are not intended to limit the conditions under which the present invention may be implemented and therefore have no substantive technical significance. Any structural modifications, changes in proportions, or adjustments in sizes, without affecting the efficacy and objectives of the present invention, shall remain within the scope of the technical contents disclosed herein.

[0022] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0023] Figure 2 is a side sectional view of the present invention;

[0024] Figure 3 For the present invention Figure 2 A in the middle is an enlarged structural diagram;

[0025] Figure 4 is a cross-sectional view of the present invention;

[0026] Figure 5 For the present invention Figure 4 The enlarged structural diagram at B in the middle;

[0027] Figure 6 For the present invention Figure 4 The enlarged structural diagram at C in the middle;

[0028] Figure 7 It is a schematic diagram of the partial structure of the mounting column of the present invention;

[0029] Figure 8 For the present invention Figure 7 Enlarged structural diagram at point D in the middle.

[0030] Legend:

[0031] 111. First mounting bracket; 112. First mounting plate; 113. First connecting plate; 114. Second mounting plate; 115. Third mounting plate; 116. Second mounting bracket; 117. Second guide hole; 118. Mounting seat; 121. Threaded rod; 122. Adapter hole; 123. Rotating motor; 124. Adapter rod; 125. First connecting block; 131. Groove; 132. Block; 133. Threaded hole; 134. Locking threaded column; 211. Mounting column; 212. Movable hole; 213. Sliding cylinder; 214. Slide groove; 215. Sliding block; 216. First adapter groove; 221. First extrusion plate; 222. Second extrusion plate; 223. Third extrusion plate; 224. Second adapter groove; 225. First connecting pressure plate; 226. Third adapter groove; 227. Second connecting pressure plate; 228. Adapter plate ;231. Mounting slot;232. Battery-driven motor;233. Rotating threaded column;234. Sliding block;235. Third limiting slot;236. Fifth limiting block;237. Protrusion;238. First mounting cavity;239. First connecting column;2310. Second connecting block;2311. Second mounting cavity;2312. Second connecting column;2313. First connecting cylinder;2314. Second connecting plate;2315. Second connecting cylinder;311. Third mounting bracket;312. Battery-driven telescopic device;313. Third connecting cylinder;314. Fourth connecting cylinder;315. Fifth connecting cylinder;316. First limiting slot;317. Second limiting slot;318. First limiting block;319. Second limiting block;3110. Third limiting block;3111. Fourth limiting block;3112. Telescopic rod;4. Squeeze plate. DETAILED DESCRIPTION

[0032] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0033] like Figures 1-8As shown, a construction pit construction equipment for underground engineering includes a first mounting plate 112, the first mounting plate 112 is a rectangular plate and a circular through hole is opened in the center position, two first mounting brackets 111 are symmetrically fixedly installed on the bottom side of the first mounting plate 112, two first connecting plates 113 are fixedly installed on the upper end of the first mounting plate 112, and a second mounting plate 114 is fixedly installed on the upper end of the two first connecting plates 113, and a detachable third mounting plate 115 is provided on the side corresponding to each other of the two second mounting plates 114, and a second mounting bracket 116 is fixedly installed on the upper end of the two second mounting plates 114, and a second guide hole 117 is opened in the center position of the third mounting plate 115, and the upper and lower sides of the third mounting plate 115 correspond to the second guide holes. The guide holes 117 are all fixedly installed with mounting seats 118, and the internal threads of the two mounting seats 118 are connected with a rotatable threaded rod 121, and the lower end of the threaded rod 121 is fixedly installed with a first connecting block 125, and three mounting posts 211 are slidably installed on the outer side of the threaded rod 121. A first adapting groove 216 is provided at the center of the mounting post 211, and the threaded rod 121 is slidably installed inside the first adapting groove 216. Both ends of the mounting post 211 are provided with movable holes 212, and a sliding cylinder 213 is slidably installed inside the movable hole 212. The three longitudinally distributed sliding cylinders 213 are fixedly installed with a first extrusion plate 221, a second extrusion plate 222 and a third extrusion plate 223 on one side away from the mounting post 211. The third extrusion plate An adapter plate 228 is fixedly installed on the bottom side of 223. The adapter plate 228 is an arc-shaped block. The two adapter plates 228 are mirror-imaged on the bottom sides of the two third extrusion plates 223. A mounting groove 231 is provided on the side of the mounting column 211. A battery-driven motor 232 is fixedly installed inside the mounting groove 231. A rotating threaded column 233 is fixedly installed on the output end of the battery-driven motor 232. A sliding block 234 for transverse movement is threadedly connected to the rotating threaded column 233. A first mounting cavity 238 is provided at both ends of the sliding block 234. A second connecting block 2310 is fixedly installed on one side of the sliding cylinder 213. A second connecting column 2312 is provided on the side of the second connecting block 2310. The first mounting cavity 238 and the second connecting column 232 correspond to each other. The interior of 312 is movably connected by a movable part. An adapter plate 228 is fixedly installed on the bottom side of the two third extrusion plates 223. A slide groove 214 is equidistantly provided on the inner side of the first adapter groove 216 and the inner side of the sliding cylinder 213. A slider 215 is fixedly installed on the outer side of the threaded rod 121 at a position corresponding to the slide groove 214. The slider 215 is slidably installed inside the slide groove 214. A detachable extrusion plate 4 is installed on the bottom side of one of the two adapter plates 228. The extrusion plate 4 is a circular plate. The bottom of the foundation pit is extruded and reinforced by the extrusion plate 4. The movable part includes a first connecting column 239 fixedly installed inside the two first installation cavities 238, and a second connecting column 2312 is fixedly installed inside the second installation cavity 2311.The first connecting tube 2313 is movably installed on the outer side of the second connecting column 2312, and the second connecting plate 2314 is fixedly installed on the side of the first connecting tube 2313. The second connecting tube 2315 is fixedly installed on the end of the second connecting plate 2314 away from the first connecting tube 2313. The second connecting tube 2315 is movably installed on the outer side of the first connecting column 239. When the sliding block 234 moves, it drives the second connecting tube 2315 to rotate on the first connecting column 239, and the first connecting tube 2313 rotates on the second connecting column 2312, thereby changing the position of the second connecting plate 2314, so that the second connecting plate 2314 pushes the mounting groove 231 to move. When in use, the threaded rod 121 rotates inside the mounting seat 118, and the threaded rod 121 moves downward while rotating, and the rotating threaded column 233 is rotated by the battery-driven motor 232. When the threaded column 233 rotates, it drives the sliding block 234 to move horizontally. When the sliding block 234 moves horizontally, it pushes the sliding cylinder 213 to move through the movable part. The three longitudinally distributed sliding cylinders 213 respectively drive the first extrusion plate 221, the second extrusion plate 222 and the third extrusion plate 223 to move. The third extrusion plate 223 drives the adapter plate 228 to move. The side wall of the foundation pit is squeezed by the first extrusion plate 221, the second extrusion plate 222 and the third extrusion plate 223. When the threaded rod 121 rotates, it drives the three mounting columns 211 to rotate. The three mounting columns 211 respectively drive the first extrusion plate 221, the second extrusion plate 222 and the third extrusion plate 223 to rotate and move downward to evenly squeeze the side wall of the foundation pit, thereby helping to compact and smooth the soil on the inner wall of the foundation pit and ensure comprehensive construction of the inner wall of the foundation pit.

[0034] The third mounting bracket 311 is fixedly mounted on the side of the threaded rod 121, and a fixed battery-driven telescoping device 312 is arranged inside the third mounting bracket 311. The output end of the battery-driven telescoping device 312 is fixedly mounted on the telescopic rod 3112. The third connecting tube 313, the fourth connecting tube 314 and the fifth connecting tube 315 are fixedly mounted on the sides of the three mounting columns 211 respectively. The fourth connecting tube 314, the third connecting tube 313 and the fifth connecting tube 315 are all "U"-shaped blocks and the output end of the telescopic rod 3112 passes through the interior of the third connecting tube 313, the fourth connecting tube 314 and the fifth connecting tube 315. The bottom of the fourth connecting tube 314 is provided with a first limiting groove 316. The side of the telescopic rod 3112 corresponds to the bottom side of the fourth connecting tube 314. The first and second limit blocks 316 are fixedly installed with the second limit block 319 adapted to the first limit groove 316, and the bottom of the fifth connecting tube 315 is provided with a second limit groove 317. The side of the telescopic rod 3112 is fixedly provided with a first limit block 318 adapted to the second limit groove 317 corresponding to the bottom side of the fifth connecting tube 315. The first limit groove 316 extends to the center position inside the fourth connecting tube 314, and the second limit groove 317 extends to the upper position of the fifth connecting tube 315. The side of the telescopic rod 3112 is fixedly provided with a third limit block 3110 corresponding to the lower side of the third connecting tube 313. After squeezing the inner wall of the foundation pit, the two corresponding first squeezing plates 221, the second squeezing plates 222 and the third squeezing plates 223 move to the side close to each other and away from the foundation pit. The inner wall of the pit is driven by the battery to drive the telescopic device 312 to move the telescopic rod 3112 upward. First, the third connecting tube 313 is driven upward by the third limit block 3110. The second limit block 319 moves a distance inside the first limit groove 316 and then drives the fourth connecting tube 314 to move upward. The first limit block 318 moves a distance inside the fifth connecting tube 315 and then drives the fifth connecting tube 315 to move upward. Then, the two corresponding first extrusion plates 221, the second extrusion plate 222 and the third extrusion plate 223 move to the side away from each other to squeeze the inner wall of the foundation pit to support the inner wall of the foundation pit. The side of the telescopic rod 3112 is fixedly installed with a fourth limit block 3111 corresponding to the upper part of the third connecting tube 313. The fourth limit block 3111 is a rectangular block. When the three mounting columns 211 drive the two corresponding first extrusion plates 221, the second extrusion plates 222 and the third extrusion plates 223 to rotate and extrude the interior of the foundation pit, the fourth limit block 3111 is used to control the vertical movement of the three mounting columns 211. The upper side of the second extrusion plate 222 is equidistantly provided with second adapting grooves 224. The bottom side of the first extrusion plate 221 is fixed with a first connecting pressure plate 225 at a position corresponding to the second adapting groove 224. The first connecting pressure plate 225 extends to the inside of the second adapting groove 224. The upper end of the third extrusion plate 223 is equidistantly provided with third adapting grooves 226. The lower end of the second extrusion plate 222 is fixed with a second connecting pressure plate 227 at a position corresponding to the third adapting groove 226.The second connecting plate 227 extends to the inside of the third adapting groove 226. When supporting the inner wall of the foundation pit, the second connecting plate 227 and the first connecting plate 225 are used to improve the strength of the support.

[0035] An adapting hole 122 is provided at the upper end of the threaded rod 121, and the adapting hole 122 passes through the interior of the threaded rod 121 and the first connecting block 125. A rotating motor 123 is fixedly installed on the side of the second mounting bracket 116 corresponding to the position of the adapting hole 122. An adapting rod 124 is fixedly installed on the output end of the rotating motor 123. The adapting rod 124 extends to the interior of the adapting hole 122 and is slidably installed in the interior of the adapting hole 122. A groove 131 is provided on the upper side of the two second mounting plates 114. A clamping block 132 is clamped at the position of the third mounting plate 115 corresponding to the groove 131. A threaded The threaded hole 133 penetrates the clamping block 132 and the second mounting plate 114. The internal thread of the threaded hole 133 is connected with a locking threaded column 134. The locking threaded column 134 is taken out from the inside of the threaded hole 133, and then the clamping block 132 is separated from the third mounting plate 115. The second mounting bracket 116 is moved upward. The second mounting bracket 116 drives the rotating motor 123 and the adapter rod 124 to move upward. The first mounting bracket 111, the first mounting plate 112, the first connecting plate 113, the second mounting plate 114 and the second mounting bracket 116 can be disassembled and used for other foundation pits.

[0036] Two third limiting grooves 235 are symmetrically provided on the side of the sliding block 234, and a fifth limiting block 236 is fixedly installed on the side wall of the battery-driven motor 232 corresponding to the position of the third limiting groove 235. The fifth limiting block 236 passes through the third limiting groove 235, and two protrusions 237 are symmetrically fixedly installed on the side of the fifth limiting block 236. The lateral movement of the sliding block 234 on the rotating threaded column 233 is constrained by the third limiting groove 235 and the fifth limiting block 236.

[0037] Working principle of the present invention:

[0038] When in use, the threaded rod 121 rotates inside the mounting seat 118, and the threaded rod 121 moves downward while rotating, and the rotating threaded column 233 is rotated by the battery-driven motor 232. When the rotating threaded column 233 rotates, it drives the sliding block 234 to move horizontally. When the sliding block 234 moves horizontally, the sliding cylinder 213 is pushed to move by the movable part. The three longitudinally distributed sliding cylinders 213 respectively drive the first extrusion plate 221, the second extrusion plate 222 and the third extrusion plate 223 to move, and the third extrusion plate 223 drives the adapter plate 228 to move, and the side wall of the foundation pit is squeezed by the first extrusion plate 221, the second extrusion plate 222 and the third extrusion plate 223. The threaded rod 1 When rotating, 21 drives the three mounting columns 211 to rotate, and the three mounting columns 211 respectively drive the first extrusion plate 221, the second extrusion plate 222 and the third extrusion plate 223 to rotate and move downward at the same time to uniformly squeeze the side wall of the foundation pit, thereby contributing to the compactness and smoothness of the soil on the inner wall of the foundation pit and ensuring the comprehensive construction of the inner wall of the foundation pit. After squeezing the inner wall of the foundation pit, the two corresponding first extrusion plates 221, the second extrusion plates 222 and the third extrusion plates 223 move to the side close to each other and away from the inner wall of the foundation pit, and the telescopic device 312 is driven by the battery to make the telescopic rod 3112 move upward. First, the third connecting tube 313 is driven upward by the third limit block 3110, and the second limit block 319 is in the first limit After the positioning groove 316 moves a certain distance inside, it drives the fourth connecting tube 314 to move upward. After the first limit block 318 moves a certain distance inside the fifth connecting tube 315, it drives the fifth connecting tube 315 to move upward, and then makes the two corresponding first extrusion plates 221, the second extrusion plates 222 and the third extrusion plates 223 move away from each other to squeeze the inner wall of the foundation pit to support the inner wall of the foundation pit. When the three mounting columns 211 drive the two corresponding first extrusion plates 221, the second extrusion plates 222 and the third extrusion plates 223 to rotate and squeeze the interior of the foundation pit, the fourth limit block 3111 controls the vertical movement of the three mounting columns 211. When supporting the inner wall of the foundation pit, the second connecting pressure plate 227 and the first connecting pressure plate 225 to improve the strength of the support, take out the locking threaded column 134 from the inside of the threaded hole 133, and then separate the block 132 from the third mounting plate 115, move the second mounting bracket 116 upward, and the second mounting bracket 116 drives the rotating motor 123 and the adapter rod 124 to move upward, and the first mounting bracket 111, the first mounting plate 112, the first connecting plate 113, the second mounting plate 114 and the second mounting bracket 116 can be disassembled and used for other foundation pits. When the sliding block 234 moves, it drives the second connecting cylinder 2315 to rotate on the first connecting column 239, and the first connecting cylinder 2313 rotates on the second connecting column 2312, thereby changing the position of the second connecting plate 2314.The second connecting plate 2314 pushes the installation slot 231 to move, and the sliding block 234 performs lateral movement on the rotating threaded column 233, which is constrained by the third limiting groove 235 and the fifth limiting block 236. The bottom of the foundation pit is squeezed and reinforced by the squeezing plate 4.

[0039] The basic principles, main features, and advantages of the present invention are shown and described above. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The above embodiments and descriptions are merely illustrative of the principles of the present invention. Various changes and modifications may be made to the present invention without departing from the spirit and scope of the present invention. Such changes and modifications are intended to fall within the scope of the present invention. The scope of protection claimed in the present invention is defined by the appended claims and their equivalents.

Claims

1. A construction equipment for a foundation pit of an underground project, comprising a first mounting plate (112), the first mounting plate (112) being a rectangular plate with a circular through hole at its center, two first mounting brackets (111) being symmetrically fixedly mounted on the bottom side of the first mounting plate (112), two first connecting plates (113) being fixedly mounted on the upper end of the first mounting plate (112), and a second mounting plate (114) being fixedly mounted on the upper end of each of the two first connecting plates (113), wherein: A detachable third mounting plate (115) is provided on one side corresponding to each other of the two second mounting plates (114); a second mounting frame (116) is fixedly mounted on the upper ends of the two second mounting plates (114); and a rotatable threaded rod (121) is provided inside the third mounting plate (115); The lower end of the threaded rod (121) is fixedly mounted with a first connecting block (125), and three mounting posts (211) are slidably mounted on the outer side of the threaded rod (121). A first adapting groove (216) is provided at the center of the mounting post (211). The threaded rod (121) is slidably mounted inside the first adapting groove (216). Both ends of the mounting post (211) are provided with movable holes (212), and a sliding cylinder (213) is slidably mounted inside the movable hole (212). The three longitudinal A first extrusion plate (221), a second extrusion plate (222) and a third extrusion plate (223) are fixedly mounted on one side of the distributed sliding cylinder (213) away from the mounting column (211), an adapter plate (228) is fixedly mounted on the bottom side of the third extrusion plate (223), a third mounting frame (311) is fixedly mounted on the side of the threaded rod (121), and a battery-driven retractor (312) is provided inside the third mounting frame (311) for driving the three mounting columns (211) to move.

2. The construction equipment for underground construction according to claim 1, characterized in that: The output end of the battery-driven telescopic device (312) is fixedly mounted with a telescopic rod (3112), and the sides of the three mounting columns (211) are respectively fixedly mounted with a third connecting cylinder (313), a fourth connecting cylinder (314) and a fifth connecting cylinder (315), the fourth connecting cylinder (314), the third connecting cylinder (313) and the fifth connecting cylinder (315) are all "U"-shaped blocks, and the output end of the telescopic rod (3112) passes through the interiors of the third connecting cylinder (313), the fourth connecting cylinder (314) and the fifth connecting cylinder (315), the bottom of the fourth connecting cylinder (314) is provided with a first limiting groove (316), and the side of the telescopic rod (3112) corresponds to the fourth connecting cylinder ( The bottom side of the telescopic rod (3112) is fixedly installed with a second limiting block (319) adapted to the first limiting groove (316), the bottom of the fifth connecting tube (315) is provided with a second limiting groove (317), the side of the telescopic rod (3112) corresponds to the bottom side of the fifth connecting tube (315) and is fixedly installed with a first limiting block (318) adapted to the second limiting groove (317), the first limiting groove (316) extends to the center position inside the fourth connecting tube (314), the second limiting groove (317) extends to the upper position of the fifth connecting tube (315), and the side of the telescopic rod (3112) corresponds to the bottom of the third connecting tube (313) and is fixedly installed with a third limiting block (3110).

3. The construction equipment for underground construction according to claim 2, characterized in that: A second guide hole (117) is provided at the center of the third mounting plate (115), and mounting seats (118) are fixedly installed at positions corresponding to the second guide hole (117) on both upper and lower sides of the third mounting plate (115), and the threaded rod (121) is threadedly connected to the inside of the mounting seat (118). A mounting groove (231) is provided on the side of the mounting column (211), and a battery-driven motor (232) is fixedly installed inside the mounting groove (231). A rotating threaded column (233) is fixedly installed at the output end of the battery-driven motor (232), and a sliding block (234) for transverse movement is threadedly connected to the rotating threaded column (233). A first mounting cavity (238) is provided at both ends of the sliding block (234); a second connecting block (2310) is fixedly installed on one side of the sliding cylinder (213); a second connecting column (2312) is provided on the side of the second connecting block (2310); the interiors of the first mounting cavity (238) and the second connecting column (2312) corresponding to each other are movably connected through a movable part; an adapter plate (228) is fixedly installed on the bottom sides of the two third extrusion plates (223); a fourth limiting block (3111) is fixedly installed on the side of the telescopic rod (3112) corresponding to the upper side of the third connecting cylinder (313); and the fourth limiting block (3111) is a rectangular block.

4. The construction equipment for underground construction according to claim 3, characterized in that: The upper side of the second extrusion plate (222) is provided with second adapting grooves (224) at equal intervals, the bottom side of the first extrusion plate (221) is fixed with a first connecting pressure plate (225) at a position corresponding to the second adapting groove (224), and the first connecting pressure plate (225) extends to the inside of the second adapting groove (224), the upper end of the third extrusion plate (223) is provided with third adapting grooves (226) at equal intervals, and the lower end of the second extrusion plate (222) is fixed with a second connecting pressure plate (227) at a position corresponding to the third adapting groove (226), and the second connecting pressure plate (227) extends to the inside of the third adapting groove (226).

5. The construction equipment for underground construction according to claim 4, characterized in that: The threaded rod (121) has an adapting hole (122) at its upper end, the adapting hole (122) passing through the threaded rod (121) and the interior of the first connecting block (125); a rotating motor (123) is fixedly mounted on the side of the second mounting frame (116) at a position corresponding to the adapting hole (122); an adapting rod (124) is fixedly mounted on the output end of the rotating motor (123); the adapting rod (124) extends into the interior of the adapting hole (122) and is slidably mounted inside the adapting hole (122); a groove (131) is formed on the upper sides of the two second mounting plates (114); a clamping block (132) is clamped at a position corresponding to the groove (131) on the third mounting plate (115); a threaded hole (133) is formed on the upper side of the clamping block (132); the threaded hole (133) passes through the clamping block (132) and the second mounting plate (114); and a locking threaded column (134) is threadedly connected to the interior of the threaded hole (133).

6. The construction equipment for underground construction according to claim 5, characterized in that: The movable part includes a first connecting column (239) fixedly installed inside the two first installation cavities (238), a second connecting column (2312) fixedly installed inside the second installation cavity (2311), a first connecting tube (2313) movably installed on the outside of the second connecting column (2312), a second connecting plate (2314) fixedly installed on the side of the first connecting tube (2313), a second connecting tube (2315) fixedly installed on the end of the second connecting plate (2314) away from the first connecting tube (2313), and the second connecting tube (2315) movably installed on the outside of the first connecting column (239).

7. The construction equipment for underground construction according to claim 6, characterized in that: Two third limiting grooves (235) are symmetrically provided on the side of the sliding block (234); a fifth limiting block (236) is fixedly installed on the side wall of the battery-driven motor (232) at a position corresponding to the third limiting groove (235); the fifth limiting block (236) passes through the third limiting groove (235); and two protrusions (237) are symmetrically fixedly installed on the side of the fifth limiting block (236).

8. The construction equipment for underground construction according to claim 7, characterized in that: The adapter plate (228) is an arc-shaped block, and the two adapter plates (228) are distributed in a mirror-image manner on the bottom sides of the two third extrusion plates (223).

9. The construction equipment for underground construction according to claim 8, characterized in that: A detachable extrusion disc (4) is installed on the bottom side of one of the two adaptor plates (228), and the extrusion disc (4) is a circular disc.

10. The construction equipment for underground construction according to claim 9, characterized in that: Slide grooves (214) are equidistantly provided on the inner side of the first adapting groove (216) and the inner side of the sliding cylinder (213); a slider (215) is fixedly installed on the outer side of the threaded rod (121) at a position corresponding to the slide groove (214); and the slider (215) is slidably installed inside the slide groove (214).

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