Anti-collapse device for deep foundation pit construction

Abstract

The utility model relates to the technical field of supporting and protecting structures, and discloses an anti-collapse device for deep foundation pit construction, which comprises a first protecting plate and a second protecting plate, and a fastening mechanism is arranged between the first protecting plate and the second protecting plate; four double-bolt pipes are installed between a first protection plate and a second protection plate, the double-bolt pipes can adjust the size between the first protection plate and the second protection plate through fastening bolts on the two sides, ball seats are arranged on the fastening bolts and matched with sleeve seats, the inclination angle of the double-bolt pipes can be flexibly changed, and the double-bolt pipes can be conveniently adjusted. The sleeve seat is connected with the first protective plate and the second protective plate through the mounting bolts, so that the device can adapt to and reinforce the soil wall of the deep foundation pit and can be flexibly mounted and dismounted, the rubber pads are embedded among the multiple groups of devices, the device assembly at the bending part of the soil wall can be ensured, the rubber pads can increase the sealing performance among the devices, the soil is prevented from overflowing, and the service life of the device is prolonged. And the construction progress and safety are influenced.

Description

Technical Field

[0001] This utility model relates to the field of support and protection structure technology, specifically a collapse prevention device for deep foundation pit construction. Background Technology

[0002] Anti-collapse devices for deep foundation pit construction are construction facilities used to prevent collapse of deep foundation pits during construction, ensure the stability of the soil walls and prevent collapse during non-slope excavation, reduce ground settlement around the foundation pit, and minimize adverse effects on adjacent existing buildings.

[0003] Chinese patent CN219450754U discloses a collapse prevention device for deep foundation pit construction, comprising: a base; multiple pointed conical rods, all fixedly installed on one side of the base; a pedestal fixedly installed on one side of the base; an electric telescopic rod fixedly installed on the outer surface of the pedestal; an installation block fixedly installed at the output end of the electric telescopic rod; a fixing rod fixedly embedded inside the installation block; two linkage rods movably sleeved on the outer surface of the fixing rod; a fixing block fixedly installed on one side of the base; a telescopic cylinder fixedly embedded inside the fixing block; and a lifting block fixedly installed at one end of the telescopic cylinder. In use, this invention, by adjusting the length of the output end of the electric telescopic rod and rotating the threaded rod, in conjunction with a support plate and a unfolding plate, achieves the effect of supporting the inner wall of the foundation pit and protecting the personal safety of workers, while avoiding the work of workers building support structures, thus reducing the labor intensity of workers.

[0004] The aforementioned device can reduce the labor intensity of workers, but the actual excavation of deep foundation pits cannot guarantee the flatness of the soil walls, which may lead to situations where the device is difficult or impossible to install. Moreover, existing devices are usually composed of multiple sets, and large gaps are easily left between the devices, which greatly affects the construction progress of deep foundation pits. Therefore, it is necessary to provide a collapse prevention device for deep foundation pit construction. Utility Model Content

[0005] The purpose of this utility model is to provide a collapse prevention device for deep foundation pit construction, so as to solve the problems that existing devices are difficult to install due to the influence of the deep foundation pit soil wall, and that large gaps are easily left between devices when protecting deep foundation pits from collapse.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a collapse prevention device for deep foundation pit construction, comprising a first guard plate and a second guard plate, wherein a fastening mechanism is provided between the first guard plate and the second guard plate; the fastening mechanism includes mounting grooves, which are respectively opened at the four corner positions of the first guard plate and the second guard plate, and mounting bolts are threadedly installed in the mounting grooves; a first corner block is fixedly installed at one end of the mounting bolts; a sleeve is fixedly installed on one side of the first corner block; a ball seat is rotatably installed inside the sleeve; a second corner block is fixedly installed on one side of the ball seat; a fastening bolt is fixedly installed at one end of the second corner block; double-threaded pipes are installed on the external threads of the fastening bolts on both sides; and a third corner block is fixedly installed in the middle of the double-threaded pipes.

[0007] Preferably, one side of both the first and second guard plates is provided with several strip grooves, and protrusions are fixedly installed at the four corners of both the first and second guard plates.

[0008] Preferably, an annular washer is fixedly installed at the opening of the sleeve, and the threads of the fastening bolts on both sides are opposite.

[0009] Preferably, the first and second guard plates are provided with connecting mechanisms on both sides. The connecting mechanism includes a rubber pad and a threaded groove. The threaded groove is respectively opened at the four corners of the first and second guard plates. A curved groove is opened on the front side of the rubber pad. Connecting pads are fixedly installed on both sides of the rubber pad. Connecting bolts are slidably installed at both ends of the rubber pad. Several limiting seats are fixedly installed side by side on both sides of the first and second guard plates.

[0010] Preferably, the connecting bolt is adapted to the threaded groove, and the limiting seat is adapted to the connecting pad.

[0011] Preferably, the cross-sectional shape of the rubber pad and the two connecting pads is convex, and one end of the mounting bolt, fastening bolt and connecting bolt is fixedly installed with a ball head.

[0012] Compared with the prior art, the beneficial effects of this utility model are:

[0013] 1) This anti-collapse device for deep foundation pit construction uses four double-bolted pipes installed between the No. 1 and No. 2 protective plates. The double-threaded pipes can adjust the size between the No. 1 and No. 2 protective plates using the fastening bolts on both sides. The fastening bolts are equipped with ball seats, which are adapted to the sleeve seats, allowing for flexible changes in the inclination angle of the double-threaded pipes. The sleeve seats are connected to the No. 1 and No. 2 protective plates by installation bolts. This allows the device to not only adapt to and reinforce the soil wall of the deep foundation pit, but also to be flexibly installed and disassembled, greatly increasing the practicality of the device.

[0014] 2) This anti-collapse device for deep foundation pit construction is installed by embedding rubber pads between multiple sets of devices, matching the rubber pads with several limit seats, and fixing the connecting pads with connecting bolts. The function of the curved groove is to increase the flexibility of the rubber pads, which can ensure the assembly of the devices at the bending of the soil wall. The rubber pads can increase the sealing between the devices, preventing soil from overflowing and affecting the construction progress and safety. Attached Figure Description

[0015] Figure 1 This is a three-dimensional structural diagram of an anti-collapse device for deep foundation pit construction according to an embodiment of the present utility model;

[0016] Figure 2 This is a cross-sectional view of the fastening mechanism in an embodiment of the present utility model;

[0017] Figure 3 This is an enlarged cross-sectional view of the first corner block in an embodiment of this utility model;

[0018] Figure 4 This is an enlarged three-dimensional view of the connecting mechanism in an embodiment of this utility model.

[0019] In the diagram: 1. First guard plate; 2. Second guard plate; 3. Fastening mechanism; 301. Mounting groove; 302. Mounting bolt; 303. First corner block; 304. Sleeve; 305. Ball seat; 306. Second corner block; 307. Fastening bolt; 308. Double threaded pipe; 309. Third corner block; 4. Connecting mechanism; 401. Rubber pad; 402. Threaded groove; 403. Bend groove; 404. Connecting pad; 405. Connecting bolt; 406. Limiting seat. Detailed Implementation

[0020] 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.

[0021] Example 1

[0022] Combination Figures 1-3A collapse prevention device for deep foundation pit construction includes a first guard plate 1 and a second guard plate 2. A fastening mechanism 3 is provided between the first guard plate 1 and the second guard plate 2. The fastening mechanism 3 includes an installation groove 301, which is respectively opened at the four corners of the first guard plate 1 and the second guard plate 2. An installation bolt 302 is installed in the internal thread of the installation groove 301. A first corner block 303 is fixedly installed at one end of the installation bolt 302. A sleeve 304 is fixedly installed on one side of the first corner block 303. A ball seat 305 is rotatably installed inside the sleeve 304. A second corner block 306 is fixedly installed on one side of the ball seat 305. A fastening bolt 307 is fixedly installed at one end of the second corner block 306. A double-threaded pipe 308 is installed on the external threads of the fastening bolts 307 on both sides. A third corner block 309 is fixedly installed in the middle of the double-threaded pipe 308.

[0023] See Figure 2 and Figure 4 Furthermore, it is found that several strip grooves are opened on one side of the first guard plate 1 and the second guard plate 2, and protrusions are fixedly installed at the four corners of the first guard plate 1 and the second guard plate 2. An annular pad is fixedly installed at the opening of the sleeve 304, and the threads of the fastening bolts 307 on both sides are opposite.

[0024] Specifically, by opening several strip grooves on one side of both the No. 1 and No. 2 protective plates, and fixing protrusions at the four corners of both plates, the friction between the No. 1 and No. 2 protective plates and the soil wall can be increased. Four double-threaded pipes 308 are installed between the No. 1 and No. 2 protective plates. The double-threaded pipes 308 can change the distance between the No. 1 and No. 2 protective plates using the fastening bolts 307 on both sides while fixing the second corner block 306, and can also play a reinforcing role. Under the action of the sleeve 304 and the ball seat 305, the tilt angle of the double-threaded pipes 308 can be changed, thereby making the No. 1 and No. 2 protective plates fit tightly against the soil wall. In use, the device can be flexibly installed and disassembled by installing bolts 302.

[0025] Example 2

[0026] Combination Figure 4 Connecting mechanisms 4 are provided on both sides of the first guard plate 1 and the second guard plate 2. The connecting mechanism 4 includes a rubber pad 401 and a threaded groove 402. The threaded groove 402 is respectively opened at the four corners of the first guard plate 1 and the second guard plate 2. A curved groove 403 is opened on the front side of the rubber pad 401, and connecting pads 404 are fixedly installed on both sides of the rubber pad 401. Connecting bolts 405 are slidably installed through both ends of the rubber pad 401. Several limiting seats 406 are fixedly installed side by side on both sides of the first guard plate 1 and the second guard plate 2.

[0027] See Figure 4Furthermore, based on Embodiment 1, the connecting bolt 405 is adapted to the threaded groove 402, the limiting seat 406 is adapted to the connecting pad 404, the rubber pad 401 and the two connecting pads 404 are combined in a convex shape, and one end of the mounting bolt 302, the fastening bolt 307 and the connecting bolt 405 are all fixedly installed with ball heads.

[0028] Specifically, by embedding rubber pads 401 between multiple sets of devices, the rubber pads 401 are matched with several limiting seats 406, and the connecting pads 404 are fixed by connecting bolts 405, thus completing the installation of multiple sets of devices. The function of the curved groove 403 is to increase the flexibility of the rubber pads 401, which can ensure the assembly of the devices at the bending points of the soil wall. The rubber pads 401 can increase the sealing between the devices, preventing soil from overflowing and affecting the construction progress and safety.

[0029] In actual operation, by opening several strip grooves on one side of the No. 1 and No. 2 protective plates, and fixing protrusions at the four corners of the No. 1 and No. 2 protective plates, the friction between the No. 1 and No. 2 protective plates and the soil wall can be increased. Four double-threaded pipes 308 are installed between the No. 1 and No. 2 protective plates. The double-threaded pipes 308 can change the distance between the No. 1 and No. 2 protective plates by using the fastening bolts 307 on both sides while fixing the second corner block 306, and can also play a reinforcing role. Under the action of the sleeve 304 and the ball seat 305, the tilt angle of the double-threaded pipes 308 can be changed, so that the No. 1 and No. 2 protective plates are tightly attached to the soil wall. In use, the device can be flexibly installed and disassembled by using the mounting bolts 302.

[0030] By embedding rubber pads 401 between multiple sets of devices, the rubber pads 401 are matched with several limiting seats 406, and the connecting pads 404 are fixed by connecting bolts 405, thus completing the installation of multiple sets of devices. The function of the curved groove 403 is to increase the flexibility of the rubber pads 401, which can ensure the assembly of the devices at the bending points of the soil wall. The rubber pads 401 can increase the sealing between the devices, preventing soil from overflowing and affecting the construction progress and safety.

[0031] Although embodiments of the present invention 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 the embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A collapse prevention device for deep foundation pit construction, comprising a first protective plate (1) and a second protective plate (2), characterized in that: A fastening mechanism (3) is provided between the first guard plate (1) and the second guard plate (2); The fastening mechanism (3) includes a mounting groove (301), which is respectively opened at the four corners of the first guard plate (1) and the second guard plate (2). The mounting groove (301) is threaded with a mounting bolt (302). A first corner block (303) is fixedly installed at one end of the mounting bolt (302). A sleeve (304) is fixedly installed on one side of the first corner block (303). A ball seat (305) is rotatably installed inside the sleeve (304). A second corner block (306) is fixedly installed on one side of the ball seat (305). A fastening bolt (307) is fixedly installed at one end of the second corner block (306). Double threaded tubes (308) are installed on the external threads of the fastening bolts (307) on both sides. A third corner block (309) is fixedly installed in the middle of the double threaded tubes (308).

2. The anti-collapse device for deep foundation pit construction according to claim 1, characterized in that: Several strip grooves are provided on one side of the first guard plate (1) and the second guard plate (2), and protrusions are fixedly installed at the four corners of the first guard plate (1) and the second guard plate (2).

3. The anti-collapse device for deep foundation pit construction according to claim 1, characterized in that: An annular washer is fixedly installed at the opening of the sleeve (304), and the threads of the fastening bolts (307) on both sides are opposite.

4. The anti-collapse device for deep foundation pit construction according to claim 2, characterized in that: The first guard plate (1) and the second guard plate (2) are provided with connecting mechanisms (4) on both sides. The connecting mechanism (4) includes a rubber pad (401) and a threaded groove (402). The threaded groove (402) is respectively opened at the four corners of the first guard plate (1) and the second guard plate (2). The front side of the rubber pad (401) is provided with a curved groove (403). Connecting pads (404) are fixedly installed on both sides of the rubber pad (401). Connecting bolts (405) are slidably installed through both ends of the rubber pad (401). Several limiting seats (406) are fixedly installed side by side on both sides of the first guard plate (1) and the second guard plate (2).

5. The anti-collapse device for deep foundation pit construction according to claim 4, characterized in that: The connecting bolt (405) is adapted to the threaded groove (402), and the limiting seat (406) is adapted to the connecting pad (404).

6. The anti-collapse device for deep foundation pit construction according to claim 5, characterized in that: The combined cross-sectional shape of the rubber pad (401) and the two connecting pads (404) is convex. One end of the mounting bolt (302), fastening bolt (307) and connecting bolt (405) is fixedly installed with a ball head.

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