Reinforcing device for super-deep special-shaped foundation pit

Abstract

The application relates to a reinforcing device for an ultra-deep special-shaped foundation pit, and belongs to the technical field of foundation pit construction. The device is respectively provided with a foundation pit bottom surface positioning mechanism and a foundation pit bottom side wall supporting mechanism, and is provided with two worm gears fixed on a transmission shaft, so that the foundation pit bottom surface positioning mechanism and the foundation pit bottom side wall supporting mechanism can be simultaneously driven, the device can be firmly fixed at the position required by the foundation pit bottom side wall, the unevenness of the foundation pit bottom surface is prevented from causing displacement of the reinforcing device under long-term use, and firm support is formed on the foundation pit bottom side wall. The device of the application simultaneously drives the foundation pit bottom surface positioning mechanism and the foundation pit bottom side wall supporting mechanism to move, so that firm positioning of the reinforcing device and firm support on the foundation pit bottom side wall are formed, and the structure is ingenious, simple and reliable.

Description

Technical Field

[0001] This invention relates to a device for reinforcing the walls of ultra-deep irregular foundation pits, belonging to the field of foundation pit construction technology. Background Technology

[0002] Ultra-deep irregular-shaped foundation pits are deeper and have irregular boundaries than ordinary deep foundation pits. Their complex boundary conditions prevent them from forming regular shapes, hence the term "irregular-shaped foundation pit." During the excavation of such ultra-deep irregular-shaped foundation pits, to ensure the safety of the main structure and surrounding environment, construction workers need to reinforce the inner walls of the pit in a timely manner according to a pre-established construction plan. However, due to the complex boundary conditions of ultra-deep irregular-shaped foundation pits, the currently used support and reinforcement devices are prone to displacement during use, resulting in unsatisfactory reinforcement effects on the bottom sidewalls within the pit. Summary of the Invention

[0003] The technical problem to be solved by this invention is: how to reliably reinforce the bottom sidewalls of an ultra-deep irregular foundation pit.

[0004] The technical solution proposed by this invention to solve the above-mentioned technical problems is as follows: A reinforcement device for ultra-deep irregular foundation pits, comprising a base box, a foundation pit bottom positioning mechanism, a foundation pit bottom sidewall support mechanism, and a transmission shaft for external power. The base box has a box body and a base plate. The foundation pit bottom positioning mechanism is located below the base plate and includes a sleeve, a sliding cylinder, a first screw, a push plate, and a pair of push rods hinged together by two push rods. The top of the sleeve is fixedly connected to the bottom surface of the base plate. The sliding cylinder is sleeved inside the sleeve and forms a first sliding pair with the sleeve. The first screw forms a threaded connection inside the sliding cylinder. There are at least two push plates symmetrically arranged along the outer circumference of the sleeve. The number of push rod pairs is the same as the number of push plates. The sleeve is hinged to one end of one of the two push rods of the push rod pair through a hinge seat on it. One end of the other two push rods of the push rod pair is hinged to the sliding cylinder. The other ends of the two push rods of the push rod pair are respectively hinged to the push plate; the pit bottom sidewall support mechanism includes a support plate hinged to one side of the box body, a long shaft located on the other side of the box body, a second screw perpendicular to the long shaft, and a support rod. A second turbine and a third worm are sleeved and fixed on the long shaft. The second screw is provided with a threaded connector and forms a second sliding pair. One end of the support rod is hinged to a nut, and the other end of the support rod is hinged to the support plate. One end of the second screw is fixed to one side of the box body, and the other end of the second screw is provided with a third turbine that meshes with the third worm. The number of second screws is the same as the number of third worms. Two worms are sleeved and fixed on the transmission shaft, namely a first worm and a second worm. The top end of the first screw is provided with a first turbine that meshes with the first worm, and the second turbine meshes with the second worm.

[0005] Furthermore, the base plate is provided with a claw mechanism on both sides, including a sliding plate, a connecting rod and a pull rod. The sliding plate is located on both sides of the base plate and forms a third sliding pair with the base plate. One end of the connecting rod is hinged to the base plate, and the other end of the connecting rod is hinged to a claw.

[0006] Furthermore, one end of one of the two push rods in the push rod pair is hinged to a slider, and a frame is provided on the push plate. The slider and the frame form a fourth sliding pair.

[0007] Furthermore, the drive shaft passes through and extends out of the side wall of the housing.

[0008] Furthermore, the outer side of the push plate is provided with a plurality of fastening pins with barbs.

[0009] Furthermore, there are three push rods symmetrically arranged along the outer circumference of the sleeve, and four screws and four worm gears.

[0010] Furthermore, the support plate is connected to one side of the outer side of the box body by a hinge and can be flipped in both directions under the action of the support rod to form two states: when it is closed with the box body and when it is open and supported on the bottom side wall of the pit.

[0011] Furthermore, the threaded connector is a nut or a sliding sleeve, and the sliding sleeve can form a sliding fit with the slide rail inside the housing.

[0012] Furthermore, the claw is provided with multiple triangular tooth-shaped stripes.

[0013] The beneficial effects of the reinforcement device for ultra-deep irregular foundation pits of the present invention are as follows: Due to the separately configured pit bottom positioning mechanism and pit bottom sidewall support mechanism, and the connection of two worm gears fixed to a single drive shaft, the pit bottom positioning mechanism and the pit bottom sidewall support mechanism can be simultaneously driven. In use, the reinforcement device is placed on the ground of the ultra-deep irregular foundation pit, and a hole is pre-drilled in the ground. The pit bottom positioning mechanism is aligned with the drilled positioning hole. When external force passes through the drive shaft... The first worm gear and the first turbine drive the first screw of the pit bottom sidewall support mechanism, which in turn moves the slide cylinder within the sleeve. The relatively moving slide cylinder and sleeve then drive one end of each of the two push rods in the push rod pair to move. The two cross-hinged push rods then spread apart, causing the push plate to spread along the outer circumference of the sleeve to the inner wall of the positioning hole. This firmly fixes the reinforcement device of the present invention at the required position on the pit bottom sidewall, preventing displacement of the reinforcement device due to unevenness of the pit bottom surface during long-term use, thus losing its supporting and protective function. Simultaneously, external force is transmitted through the second worm gear and the second turbine to the long shaft of the pit bottom sidewall support mechanism, causing the long shaft to rotate. The third worm gear on the long shaft drives the third turbine, causing the second screw to rotate. The nut on the second screw moves relative to the second screw, extending the support rod and causing the support plate to flip open and support the pit bottom sidewall, thus forming a solid support for the pit bottom sidewall. The present invention uses a single drive shaft to simultaneously move the pit bottom positioning mechanism and the pit bottom sidewall support mechanism, thereby achieving a firm positioning of the reinforcement device and a firm support for the pit bottom sidewall. The structure is ingenious, simple, and reliable. Attached Figure Description

[0014] The reinforcement device for ultra-deep irregular foundation pits of the present invention will be further described below with reference to the accompanying drawings.

[0015] Figure 1 This is a perspective view of the reinforcement device for the ultra-deep irregular foundation pit in the embodiment.

[0016] Figure 2 yes Figure 1 A three-dimensional view from another perspective.

[0017] Figure 3 This is a longitudinal sectional view of the reinforcement device for the ultra-deep irregular foundation pit in the embodiment.

[0018] Figure 4 yes Figure 3 Cross-sectional view along the AA direction.

[0019] Figure 5 yes Figure 4 Enlarged view of a portion of the image.

[0020] Figure 6 yes Figure 1 A top view of the box when the support plate is placed on top of it.

[0021] Figure 7 This is a top view of the reinforcement device for an ultra-deep irregularly shaped foundation pit in the embodiment, used for a regular hexagonal foundation pit.

[0022] Figure 8 This is a top view of the reinforcement device for an ultra-deep irregularly shaped foundation pit in the embodiment, used for a near-pentagonal foundation pit. Detailed Implementation Example

[0023] The reinforcement device for ultra-deep irregular foundation pits in this embodiment, such as Figure 1 , Figure 2 and Figure 3 As shown, the structure includes a base box 1, a pit bottom positioning mechanism 2, a pit bottom sidewall support mechanism 3, and a drive shaft 303 for external power. The base box 1 has a box body and a base plate 101. Figure 1 , Figure 2 , Figure 4 and Figure 5 As shown, the pit bottom positioning mechanism is located below the base plate 101 and includes a sleeve 201, a slide cylinder 202, a first screw 208, a push plate 207, and a pair of push rods that are cross-hinged by two push rods 203 and 204.

[0024] like Figure 5 As shown, the top of the sleeve 201 is fixedly connected to the bottom surface of the base plate 101. The slide cylinder 202 is sleeved inside the sleeve 201 and forms a first sliding pair with the sleeve 201. The first screw 208 forms a threaded connection inside the slide cylinder 202. There are three push plates 207 symmetrically arranged along the outer circumference of the sleeve 201. The number of push rod pairs formed by the two push rods 203 and 204 is the same as the number of push plates 207, which is three pairs. The sleeve 201 is hinged to one end of one of the two push rods 204 of the push rod pair through a hinge seat. One end of the other push rod 203 of the push rod pair is hinged to the slide cylinder 202. The other ends of the two push rods 203 and 204 of the push rod pair are respectively hinged to the push plate 207. In this embodiment, the other end of one of the two push rods 204 of the push rod pair is hinged to a slider 4. The push plate 207 is provided with a frame 206, and the slider 4 and the frame 206 form a fourth sliding pair. In this embodiment, a plurality of fastening pins with barbs are provided on the outer side of the push plate 207.

[0025] like Figure 3 and Figure 4 As shown, the pit bottom sidewall support mechanism includes a support plate 407 hinged to one side of the box body via a hinge 408, a long shaft 306 located on the other side of the box body, a second screw 403 perpendicular to the long shaft 306, and a support rod 405. A second worm gear 305 and a third worm 401 are sleeved and fixed on the long shaft 306. Figure 2 As shown, the second screw 403 is provided with a nut 9 and forms a second sliding pair, as... Figure 2 and 4 As shown, one end of the support rod 405 is hinged to the nut 9, and the other end of the support rod 405 is hinged to the support plate 407. Figure 1 and Figure 3 As shown, one end of the second screw 403 is fixed to one side of the housing, and the other end of the second screw 403 is provided with a third turbine 402 that meshes with the third worm gear 401. In this embodiment, the support plate 407 is connected to one side of the housing via a hinge 408 and can be flipped in both directions under the action of the support rod 405 to form two states: closed with the housing and open, supported on the bottom side wall of the pit. In this embodiment, the number of second screws 403 and the number of third worm gears 401 are the same, both being four. In addition, the nut 9 can be replaced with a sliding sleeve that is threadedly connected to the second screw 403, and the sliding sleeve can also form a sliding fit with the slide rail provided in the housing.

[0026] like Figure 4 As shown, two worm gears, namely the first worm gear 302 and the second worm gear 304, are sleeved and fixed on the transmission shaft 303; the top end of the first screw 208 is provided with a first turbine 301 that meshes with the first worm gear 302, and the second turbine 305 meshes with the second worm gear 304.

[0027] like Figure 1 , Figure 2 , Figure 3 and Figure 6 As shown, the base plate 101 is also provided with a claw mechanism 5 on both sides, including a sliding plate 501, a connecting rod 502, and a pull rod 505. The sliding plate 501 is located on both sides of the base plate 101, and the sliding plate and the base plate 101 form a sliding connection third sliding pair. One end of the connecting rod 502 is hinged to the base plate 101, and the other end of the connecting rod 502 is hinged to a claw 504. The middle part of the connecting rod 502 is hinged to the pull rod 505, and the other end of the pull rod 505 is hinged to the sliding plate 501. The claw 504 is provided with multiple triangular toothed stripes. Of course, the claw mechanism 5 can also be omitted.

[0028] One possible change in this embodiment is that the slider 4 and the frame 206 on the push plate 207, which are hinged to the other end of one of the two push rods 204 of the push rod pair, can be omitted, and there is no need to form a fourth moving pair. One of the two push rods 204 can be directly hinged to the push plate 207.

[0029] In this embodiment, one end of the drive shaft 303 passes through and extends out of the side wall of the housing. One end of the drive shaft 303 can be connected to a handle and driven to rotate by human power. The other end of the drive shaft 303 can also be connected to the output end of a motor and driven by the motor.

[0030] When using, such as Figure 7 or Figure 8 As shown, the reinforcement device for the ultra-deep irregular foundation pit of this embodiment is placed in the foundation pit. Figure 7 and Figure 8 Three reinforcement devices for ultra-deep irregular foundation pits according to this embodiment are placed in each of the three sections. Holes are first dug in the ground of the ultra-deep irregular foundation pit, and the positioning mechanism at the bottom of the foundation pit is aligned with the positioning hole. When the sliding plate 501 on the base plate 101 contacts the ground, the sliding plate 501 retracts into the base plate 101 (a sliding seat can be installed inside the base plate 101) under its own gravity. This causes the sliding plate 501 to drive the tie rods 505 hinged on both sides to start to move linearly in sync. This causes the tie rods 505 to pull the connecting rods 502 hinged to them, and the connecting rods 502 drive the claws 504 hinged to them to lock into the ground, thereby strengthening the stability of the connection between the base 101 and the ground. Meanwhile, when external force is transmitted through the first worm gear 302 and the first turbine 301 of the transmission shaft 303 to the first screw 208 of the pit bottom sidewall support mechanism, the slide cylinder 202 moves within the sleeve 201. The relatively moving slide cylinder 202 and sleeve 201 each drive one end of the two push rods 203 and 204 of the push rod pair to move. After the two cross-hinged push rods 203 and 204 are spread apart, the push plate 207 is spread along the outer circumference of the sleeve 201 to the inner wall of the positioning hole. This can firmly fix the reinforcement device of this embodiment at the required position on the bottom sidewall of the pit, preventing the unevenness of the pit bottom surface from causing the base plate 101 to shift under long-term use. Simultaneously, external force is transmitted through the second worm gear 304 and the second turbine gear 305 of the transmission shaft 303 to the long shaft 306 of the pit bottom sidewall support mechanism, causing the long shaft 306 to rotate. The third worm gear 401 of the long shaft 306 drives the third turbine gear 402, causing the second screw 403 to rotate. The nut 9 on the second screw 403 moves relative to the second screw 403, extending the support rod 8 and causing the support plate 407 to flip open and support the pit bottom sidewall, thus forming a solid support for the pit bottom sidewall. Furthermore, the greater the force applied by the push plate 207 to the excavation wall and the support plate 407 to the pit wall, the greater the force with which the claw 504 engages with the ground, effectively preventing displacement of the device during the support and reinforcement process.

[0031] The above description is only a preferred embodiment of the present invention, but the present invention is not limited thereto. All equivalent substitutions or modifications made to the concepts and technical solutions of the present invention should be covered within the protection scope of the present invention.

Claims

1. A reinforcement device for ultra-deep irregularly shaped foundation pits, characterized in that... The system includes a base box, a pit bottom positioning mechanism, a pit bottom sidewall support mechanism, and a transmission shaft for external power. The base box has a box body and a base plate. The pit bottom positioning mechanism is located below the base plate and includes a sleeve, a sliding cylinder, a first screw, a push plate, and a pair of push rods hinged together by two push rods. The top of the sleeve is fixedly connected to the bottom surface of the base plate. The sliding cylinder is sleeved inside the sleeve and forms a first sliding pair with the sleeve. The first screw is threaded inside the sliding cylinder. There are at least two push plates symmetrically arranged along the outer circumference of the sleeve. The number of push rod pairs is the same as the number of push plates. The sleeve is hinged to one end of one of the two push rods of the push rod pair through a hinge seat. One end of the other push rod of the push rod pair is hinged to the sliding cylinder. The other ends of the two push rods of the push rod pair are respectively hinged to the push plate. The pit bottom sidewall support mechanism includes a support plate hinged to one side of the box body and a long shaft located on the other side of the box body. A second screw and a support rod are mounted on a vertical long axis. A second worm gear and a third worm are fixedly fitted onto the long axis. The second screw has a nut and forms a second sliding pair. One end of the support rod is hinged to the nut, and the other end is hinged to the support plate. One end of the second screw is fixed to one side of the housing, and the other end of the second screw has a third worm gear that meshes with the third worm. The number of second screws is the same as the number of third worms. Two worms, a first worm and a second worm, are fixedly fitted onto the transmission shaft. The top end of the first screw has a first worm gear that meshes with the first worm, and the second worm gear meshes with the second worm. The base plate also has a claw mechanism on both sides, including a sliding plate, a connecting rod, and a pull rod. The sliding plate is located on both sides of the base plate and forms a sliding third sliding pair with the base plate. One end of the connecting rod is hinged to the base plate, and the other end of the connecting rod is hinged to a claw.

2. The reinforcement device for ultra-deep irregular foundation pits according to claim 1, characterized in that: One end of one of the two push rods in the push rod pair is hinged to a slider, and a frame is provided on the push plate. The slider and the frame form a fourth sliding pair.

3. The reinforcement device for ultra-deep irregular foundation pits according to claim 1, characterized in that: The drive shaft passes through and extends out of the side wall of the housing.

4. The reinforcement device for ultra-deep irregular foundation pits according to any one of claims 1-3, characterized in that: The outer side of the push plate is provided with multiple fastening pins with barbs.

5. The reinforcement device for ultra-deep irregular foundation pits according to any one of claims 1-3, characterized in that: There are three push rods symmetrically arranged along the outer circumference of the sleeve, and four push rods in total, including the second screw and the third worm gear.

6. The reinforcement device for ultra-deep irregular foundation pits according to any one of claims 1-3, characterized in that: The support plate is connected to one side of the outer side of the box body by a hinge and can be flipped in both directions under the action of the support rod to form two states: when it is closed with the box body and when it is open, it is supported on the bottom side wall of the pit.

7. The reinforcement device for ultra-deep irregular foundation pits according to any one of claims 1-3, characterized in that: The threaded connector is a nut or a sliding sleeve, which can form a sliding fit with the slide rail inside the housing.

8. The reinforcement device for ultra-deep irregular foundation pits according to claim 1, characterized in that: The claw has multiple triangular tooth-shaped stripes.

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