A hole supporting device for pile foundation drilling and a method for using the same

Abstract

The present application relates to pile foundation drilling support device technical field, disclose a kind of pile foundation drilling support device of prevent hole collapse and its use method, the kind of pile foundation drilling support device of prevent hole collapse, including being provided with the rack above pile foundation drilling mechanism, and the lifting drive mechanism of installation at the top of rack, and with the transmission connection of lifting drive mechanism inner clamping mechanism and outer clamping mechanism;Inner clamping mechanism is located above pile foundation drilling mechanism, inner clamping mechanism and outer clamping mechanism can be set on rack, and inner clamping mechanism and outer clamping mechanism can slide each other.The present application selects suitable support installation mode according to the shape of foundation pit, corrugated board is used for the anti-collapse protection of rectangular foundation pit, casing is used for the anti-collapse protection of circular foundation pit, so that the safety of foundation pit improves, to improve the application range of equipment, can adapt to the clamping of different specifications of sleeve or corrugated board, enhance adaptability.

Description

Technical Field

[0001] This invention relates to the field of pile foundation drilling support device technology, and in particular to a pile foundation drilling support device that can prevent borehole collapse and its usage method. Background Technology

[0002] Current pile foundation anti-collapse support after pile foundation drilling requires the selection of appropriate materials for reinforcement based on the shape of different pile foundation pits. For example, rectangular pile foundation pits require corrugated sheets to be installed around the perimeter, while cylindrical pile foundation pits require appropriately sized casings. Existing support installation equipment cannot be installed on different types of pile foundation pits, and it is not convenient to perform follow-up operations. It cannot quickly achieve precise clamping function, resulting in low installation efficiency, high operation difficulty, and a limited scope of application, making it difficult to promote on a large scale. Summary of the Invention

[0003] The purpose of this invention is to address the shortcomings of existing technologies by proposing a pile foundation drilling support device and its usage method that can prevent borehole collapse.

[0004] To achieve the above objectives, the present invention adopts the following technical solution:

[0005] A pile foundation drilling support device with anti-collapse capability includes a frame mounted above a pile foundation drilling mechanism, a lifting drive mechanism mounted on the top of the frame, and an inner clamping mechanism and an outer clamping mechanism inducedly connected to the lifting drive mechanism. The inner clamping mechanism is located above the pile foundation drilling mechanism, and both the inner and outer clamping mechanisms are inducedly mounted on the frame and can slide relative to each other. The lifting drive mechanism includes a lifting driver mounted on the frame, a disc-shaped mounting frame inducedly connected to the lifting driver, and a mounting frame inducedly connected to the mounting disc. The inner clamping mechanism is mounted on the disc-shaped mounting frame, and the outer clamping mechanism is mounted on the mounting frame. The inner clamping mechanism includes four sets of clamping claws that can slide horizontally and have adjustable clamping direction, and a displacement drive assembly for driving the clamping claws. The outer clamping mechanism includes four sets of pushing assemblies located on the four side walls of the mounting frame, and clamping assemblies inducedly connected to the pushing assemblies.

[0006] Preferably, the clamping claw includes a locking frame, a hinge frame, and an abutment plate. The locking frame is driven by a displacement driving mechanism. The hinge frame is hinged to the bottom of the locking frame via a hinge shaft. The axial direction of the hinge shaft is perpendicular to the displacement direction of the displacement driving mechanism to which the locking frame is driven. The abutment plate is detachably mounted on the end of the hinge frame away from the hinge shaft. The locking frame has a first polygonal slot perpendicular to the hinge axis. The hinge frame has a locking plate in the middle. The locking plate is fixedly mounted on the hinge frame and is perpendicular to the hinge frame. The hinge frame is located in the middle of the locking plate. Both ends of the hinge plate have second polygonal slots that match the first polygonal slot. The locking frame and the hinge frame are connected by polygonal bolts that pass through the first and second polygonal slots in sequence.

[0007] Preferably, the clamping claw further includes a connecting sleeve and a locking sleeve. There are four connecting sleeves, which are located at both ends of the locking frame and the upper and lower ends of the locking plate on the side away from the locking frame. There are two locking sleeves, which are located on both sides of the polygonal plug. The outer wall of the connecting sleeve is threadedly connected to the first inner wall of the locking sleeve. The two ends of the polygonal plug are provided with threaded posts, which are threadedly connected to the second inner wall of the locking sleeve.

[0008] Preferably, the end of the hinge frame away from the hinge axis is provided with an elastic movable plate, the abutment plate is detachably connected to the elastic movable plate, and the elastic movable plate and the hinge frame are elastically connected by a first spring.

[0009] Preferably, the displacement drive assembly includes a coaxially arranged rotating shaft and a rotating cylinder, and two sets of synchronous drive devices for driving the rotating shaft and the rotating cylinder to rotate. The disc-shaped mounting frame includes an upper disc body and a lower disc body that are horizontally coaxially arranged, and a fixed connecting rod that is vertically arranged between the upper disc body and the lower disc body for fixing the two. The rotating shaft and the rotating cylinder are both coaxially arranged with the lower disc body. The rotating shaft is rotatably mounted on the lower disc body. Each set of synchronous drive devices is connected to two opposite sets of the four sets of first clamping assemblies for synchronous transmission. The rotating cylinder is rotatably sleeved on the rotating shaft. The synchronous drive devices are arranged between the upper disc body and the lower disc body.

[0010] Preferably, the synchronous drive device includes a gear transmission component, a rotary driver, and a horizontal displacement transmission component. The rotary driver is connected to the gear transmission component, the gear transmission component is connected to the horizontal displacement transmission component, and the horizontal displacement transmission component is connected to the clamping jaw.

[0011] Preferably, the horizontal displacement transmission component includes a threaded transmission rod, a sliding seat, and a transmission plate. A limiting frame for sliding the sliding seat is vertically provided on the lower plate. The lower plate also includes a limiting clearance groove for avoiding the transmission plate. The limiting frame and the limiting clearance groove are both arranged radially along the lower plate. The threaded transmission rod is horizontally rotatably mounted on the limiting frame. The axial direction of the threaded transmission rod is consistent with the length direction of the limiting frame. Every two coaxial threaded transmission rods are connected to one set of gear transmission components. The sliding seat is threadedly connected to the threaded transmission rod. The transmission plate is vertically arranged. The top end of the transmission plate passes through the limiting clearance groove and is fixedly connected to the sliding seat. The bottom end of the transmission plate is fixedly connected to the clamping claw.

[0012] Preferably, the gear transmission component includes a drive mounting bracket, a drive gear, a driven gear, a drive helical gear, and a driven helical gear. The drive mounting bracket is fixedly mounted on the lower plate body, and the rotary actuator is mounted on the drive mounting bracket. The drive gear is horizontally rotatable between the upper and lower plate bodies. The rotary actuator is connected to the drive gear. The driven gear is fixedly sleeved on the outer wall of the rotating shaft or the outer wall of the rotating cylinder. The drive gear meshes with the driven gear. The drive helical gear is fixedly sleeved on the outer wall of the rotating shaft or the outer wall of the rotating cylinder. The driven helical gear is vertically mounted on the end of the threaded transmission rod near the rotating shaft. The driven helical gear meshes with the drive helical gear and is fixedly connected to the threaded transmission rod.

[0013] Preferably, a second spring and a limiting telescopic rod are provided between the mounting frame and the disc-shaped mounting bracket. The disc-shaped mounting bracket is located above the mounting frame. The two ends of the limiting telescopic rod are respectively connected to the bottom end of the disc-shaped mounting bracket and the top end of the mounting frame. The spring is sleeved on the telescopic limiting rod. The mounting frame and the machine frame are slidably connected in the vertical direction.

[0014] The method of using the above-mentioned pile foundation drilling support device that can prevent borehole collapse includes the following steps:

[0015] S: After the pile foundation drilling mechanism excavates and drills open the foundation pit, the drilled foundation pit is supported and reinforced by the pile foundation drilling support device.

[0016] S: Determine whether the required reinforcement material is a sleeve or a corrugated board, and set the clamping direction of the clamping claw in the inner clamping mechanism accordingly. When it is a sleeve, the clamping direction of the clamping claw is set outward. When it is a corrugated board, the clamping direction of the clamping claw is set inward. The clamping position of the clamping claw is locked by a polygonal bolt.

[0017] S: The lifting drive mechanism drives the disc mounting frame to descend, which in turn drives the mounting frame to descend synchronously. When the mounting frame is in place, the outer clamping mechanism is released, and the inner clamping mechanism is driven to descend to the predetermined height. The sleeve or corrugated plate held by the inner clamping mechanism is pushed downward, and then the outer clamping mechanism is clamped to hold the outer side wall of the sleeve or corrugated plate. At this time, the inner clamping mechanism is released, and the lifting drive mechanism drives the inner clamping mechanism to rise, and the connecting sleeve or corrugated plate is installed on the inner clamping mechanism.

[0018] S: The rotary driver drives the gear transmission component to output, and the gear transmission component drives the horizontal displacement transmission component connected to it to move, which in turn drives the clamping claw connected below to move synchronously, realizing the displacement driving function. The gear transmission component drives the threaded transmission rod to rotate, which in turn drives the sliding seat connected to it to move along the length of the threaded transmission rod, and drives the transmission plate fixedly connected to it to move, which in turn drives the clamping claw to move synchronously, realizing the clamping function of the inner clamping mechanism.

[0019] The beneficial effects of this invention are as follows:

[0020] 1. When it is necessary to support the foundation pit formed by pile foundation drilling, the appropriate support installation method should be selected according to the shape of the foundation pit. Corrugated plates are used for anti-collapse protection of rectangular foundation pits, and sleeves are used for anti-collapse protection of circular foundation pits, which improves the safety of the foundation pit and thus expands the applicability of the equipment. It can adapt to the clamping of sleeves or corrugated plates of different specifications, and enhances adaptability.

[0021] 2. When the object to be clamped is a sleeve, the clamping direction of the clamping claws is to expand outward from the inside of the sleeve and tighten the inner wall of the sleeve. At this time, the direction of the clamping claws is away from the center of the disc mounting frame. When the object to be clamped is a corrugated board, both the inner and outer clamping mechanisms need to be able to clamp the four sides of the corrugated board. At this time, the clamping direction of the clamping claws can be easily adjusted. By reversing the clamping claws, the original outward clamping force becomes an inward clamping force, and the corresponding sides move synchronously, so that the clamping claws can quickly clamp the four sides of the corrugated board, thereby increasing the scope of equipment use and improving the clamping effect.

[0022] 3. The lifting drive mechanism drives the disc-shaped mounting frame to descend, which in turn drives the mounting frame to descend synchronously. Once the mounting frame has descended to its position, the outer clamping mechanism is released, and the inner clamping mechanism continues to descend to the predetermined height. Then, the outer clamping mechanism is clamped to hold the outer wall of the newly added sleeve or corrugated plate. At this time, the inner clamping mechanism can rise on its own, which can conveniently and efficiently add the continuous sleeve or corrugated plate. During the connection process, both sections can be stably clamped. Attached Figure Description

[0023] Figure 1This is a three-dimensional structural diagram of a pile foundation drilling support device that can prevent borehole collapse, as proposed in an embodiment of the present invention.

[0024] Figure 2 This is a front view of a pile foundation drilling support device that can prevent borehole collapse, as proposed in an embodiment of the present invention.

[0025] Figure 3 This is a bottom view of a pile foundation drilling support device that can prevent borehole collapse, as proposed in an embodiment of the present invention.

[0026] Figure 4 This is a three-dimensional structural diagram of a disc-shaped mounting frame and an inner clamping mechanism for a pile foundation drilling support device that can prevent borehole collapse, as proposed in an embodiment of the present invention. Figure 1 ;

[0027] Figure 5 A three-dimensional structural diagram of the clamping claw of a pile foundation drilling support device capable of preventing borehole collapse, as proposed in an embodiment of the present invention. Figure 1 ;

[0028] Figure 6 A three-dimensional structural diagram of the clamping claw of a pile foundation drilling support device capable of preventing borehole collapse, as proposed in an embodiment of the present invention. Figure 2 ;

[0029] Figure 7 This is a partial exploded perspective view of the clamping claw of a pile foundation drilling support device that can prevent borehole collapse, as proposed in an embodiment of the present invention.

[0030] Figure 8 This is a three-dimensional structural diagram of a disc-shaped mounting frame and an inner clamping mechanism for a pile foundation drilling support device that can prevent borehole collapse, as proposed in an embodiment of the present invention. Figure 2 ;

[0031] Figure 9 This is a three-dimensional structural diagram of the displacement drive component, gear transmission component, horizontal displacement transmission component, and rotary actuator of a pile foundation drilling support device that can prevent borehole collapse, as proposed in an embodiment of the present invention.

[0032] Figure 10 This is a three-dimensional structural diagram of the gear transmission component and the horizontal displacement transmission component of a pile foundation drilling support device that can prevent borehole collapse, as proposed in an embodiment of the present invention.

[0033] In the diagram: 1-Frame; 2-Lifting drive mechanism; 21-Lifting driver; 22-Disc mounting bracket; 221-Upper disc body; 222-Lower disc body; 2221-Limiting bracket; 2222-Limiting clearance groove; 223-Fixed connecting rod; 23-Mounting frame; 24-Second spring; 25-Limiting telescopic rod; 3-Inner clamping mechanism; 31-Clamping claw; 311-Locking bracket; 3111-First polygonal mounting slot; 312-Hinge bracket; 3121-Locking plate; 3122-Second polygonal mounting slot; 313-Abutting plate; 314-Polygonal plug; 3141-Threaded post; 315-Connecting sleeve; 3 151-First inner sidewall; 3152-Second inner sidewall; 316-Locking sleeve; 317-Elastic movable plate; 318-First spring; 32-Displacement drive assembly; 321-Rotating shaft; 322-Rotating cylinder; 323-Gear transmission component; 3231-Drive mounting bracket; 3232-Drive gear; 3233-Driven gear; 3234-Drive helical gear; 3235-Driven helical gear; 324-Rotary driver; 325-Horizontal displacement transmission component; 3251-Threaded transmission rod; 3252-Sliding seat; 3253-Transmission plate; 4-External clamping mechanism; 41-Pushing assembly; 42-Clamping assembly. Detailed Implementation

[0034] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments.

[0035] like Figures 1-7 The diagram illustrates a pile foundation drilling support device designed to prevent borehole collapse. The support device is located above a pile foundation drilling mechanism and includes a frame 1 mounted above the drilling mechanism, a lifting drive mechanism 2 mounted on the top of the frame 1, and an inner clamping mechanism 3 and an outer clamping mechanism 4 connected to the lifting drive mechanism 2. The inner clamping mechanism 3 is located above the drilling mechanism, and both the inner clamping mechanism 3 and the outer clamping mechanism 4 are vertically and vertically mounted on the frame 1, allowing them to slide relative to each other. The lifting drive mechanism 2 includes a lifting drive mechanism mounted on the frame 1. The device 21, the disc-shaped mounting bracket 22 which is driven by the lifting drive 21, and the mounting frame 23 which is driven by the mounting plate. The inner clamping mechanism 3 is mounted on the disc-shaped mounting bracket 22, and the outer clamping mechanism 4 is mounted on the mounting frame 23. The inner clamping mechanism 3 includes four sets of clamping claws 31 that can slide horizontally and whose clamping direction can be adjusted, and a displacement drive assembly 32 for driving the clamping claws 31. The outer clamping mechanism 4 includes four sets of pushing assemblies 41 located on the four side walls of the mounting frame 23, and a clamping assembly 42 which is driven by the pushing assembly 41.

[0036] When it is necessary to support the foundation pit formed by pile foundation drilling, corrugated sheets or sleeves need to be installed on the edge of the foundation pit. The appropriate support installation method should be selected according to the shape of the foundation pit. The installation of corrugated sheets or sleeves can prevent the pile foundation from collapsing, thereby improving the safety of the foundation pit. When facing a rectangular foundation pit, corrugated sheets need to be installed on the side of the foundation pit. When facing a cylindrical foundation pit, sleeves that match the borehole diameter need to be installed to improve the applicability and adaptability of the equipment.

[0037] The inner clamping mechanism 3 and the outer clamping mechanism 4 work together to clamp the sleeve or corrugated plate located between the inner clamping mechanism 3 and the outer clamping mechanism 4. The clamping force on both sides makes the corrugated plate or sleeve more stable during installation and allows for continuous operation on the upper side according to different depths. When facing the sleeve, the inner clamping mechanism 3 clamps the inner wall of the sleeve through four sets of outwardly expanding clamping claws 31, and the outer clamping mechanism 4 drives the clamping component 42 connected to it through the pushing component 41 to clamp the outer wall of the sleeve, so that both the inner and outer sides of the sleeve are clamped, making the downward installation of the sleeve more stable.

[0038] The lifting drive mechanism 2 drives the inner clamping mechanism 3 and the outer clamping mechanism 4, enabling them to move synchronously or asynchronously in the vertical direction. When it is necessary to continue the sleeve or corrugated plate, the inner clamping mechanism 3 is released, and the lifting drive mechanism 2 drives the inner clamping mechanism 3 to rise, placing the sleeve or corrugated plate of the continuing section at the loading position. The inner clamping mechanism 3 clamps the continuing section, and then the lifting drive mechanism 2 drives the inner clamping mechanism 3 to move downward, so that the continuing section is connected to the original section by a snap-fit ​​or other fixing method. The original sleeve or corrugated plate is fixedly connected to the continuing sleeve or corrugated plate, and the continuing section continues to move downward. At this time, the outer clamping mechanism 4 releases the connection with the original sleeve or corrugated plate until the continuing section moves into place. Then, the outer clamping mechanism 4 clamps its outer side wall, releases the inner clamping mechanism 3, and moves upward. The above process is repeated until the support function of the foundation pit is completed.

[0039] During the above operation, when the object to be clamped is a sleeve, the clamping direction of the clamping claw 31 is to expand outward from the inside of the sleeve and tighten the inner wall of the sleeve. At this time, the direction of the clamping claw 31 is away from the center of the disc mounting frame 22. When the object to be clamped is a corrugated board, both the inner clamping mechanism 3 and the outer clamping mechanism 4 need to be able to clamp the four sides of the corrugated board. At this time, the clamping direction of the clamping claw 31 can be easily adjusted, and the clamping claw 31 can be reversed, so that the original outward clamping force becomes the inward clamping force, and the corresponding two sides are synchronously displaced, so that the clamping claw 31 can quickly clamp the four sides of the corrugated board, improve the equipment's application range, and enhance the clamping effect.

[0040] like Figures 4-7As shown, the clamping jaw 31 includes a locking frame 311, a hinge frame 312, and an abutment plate 313. The locking frame 311 is connected to the displacement driving mechanism. The hinge frame 312 is hinged to the bottom of the locking frame 311 via a hinge shaft. The axis of the hinge shaft is perpendicular to the displacement direction of the displacement driving mechanism connected to the locking frame 311. The abutment plate 313 is detachably mounted on the end of the hinge frame 312 away from the hinge shaft. A first polygonal mounting slot 3111 is provided on the locking frame 311 perpendicular to the hinge axis. A locking plate 3121 is provided in the middle of the hinge frame 312. The locking plate 3121 is fixedly installed on the hinge frame 312. The locking plate 3121 is perpendicular to the hinge frame 312. The hinge frame 312 is located in the middle of the locking plate 3121. Both ends of the hinge plate are provided with second polygonal slots 3122 that match the first polygonal slot 3111. The locking frame 311 and the hinge frame 312 are connected by polygonal bolts 314 passing through the first polygonal slot 3111 and the second polygonal slot 3122 in sequence.

[0041] After selecting the object to be clamped, the clamping claw 31 on the inner clamping mechanism 3 needs to be adjusted to the correct orientation. The clamping claw 31 can be rotated by the locking frame 311 and the hinge frame 312. The position of the hinge frame 312 can be fixed by the polygonal bolt 314 cooperating with the locking frame 311 and the hinge frame 312. The hinge frame 312 can rotate 180 degrees around the hinge axis and around the locking frame 311, thereby realizing the adjustable contact direction of the contact plate 313.

[0042] It is worth mentioning that the surface of the contact plate 313 is made of rubber material with a high coefficient of friction and is deformable. The contact plate 313 can provide a good contact effect on curved or flat surfaces, thereby improving the clamping function.

[0043] like Figures 4-7 As shown, the clamping claw 31 also includes a connecting sleeve 315 and a locking sleeve 316. There are four connecting sleeves 315, which are located at both ends of the locking frame 311 and the upper and lower ends of the locking plate 3121 on the side away from the locking frame 311. There are two locking sleeves 316, which are located on both sides of the polygonal plug 314. The outer wall of the connecting sleeve 315 is threadedly connected to the first inner wall 3151 of the locking sleeve 316. The two ends of the polygonal plug 314 are provided with threaded posts 3141, which are threadedly connected to the second inner wall 3152 of the locking sleeve 316.

[0044] When the connecting sleeve 315 and locking sleeve 316 are not locked, the polygonal plug 314 can be pulled out from the locking frame 311 and the hinge frame 312. At this time, the hinge frame 312 can be rotated 180 degrees below the locking frame 311 by rotating the hinge frame 312. Then, the polygonal plug 314 can be reinserted into the first polygonal slot 3111 and the second polygonal slot 3122. The position of the polygonal plug 314 is locked by the locking sleeve 316, the connecting sleeve 315 and the threaded post 3141 at both ends of the polygonal plug 314, thereby ensuring the function of the clamping claw 31 to easily change the clamping position.

[0045] like Figures 4-7 As shown, the hinge frame 312 has an elastic movable plate 317 at one end away from the hinge axis. The abutment plate 313 is detachably connected to the elastic movable plate 317. The elastic movable plate 317 and the hinge frame 312 are elastically connected by a first spring 318.

[0046] The elastic movable plate 317 is elastically connected to the end of the hinge frame 312 via the first spring 318. The first spring 318 is used to provide a certain buffering force during clamping, preventing damage to the equipment due to inaccurate clamping when errors occur. This improves the buffering effect and enhances the clamping performance without affecting the clamping function.

[0047] like Figures 8-10 As shown, the displacement drive assembly 32 includes a coaxially arranged rotating shaft 321 and rotating cylinder 322, and two sets of synchronous drive devices for driving the rotating shaft 321 and rotating cylinder 322 to rotate. The disc-shaped mounting bracket 22 includes an upper disc body 221 and a lower disc body 222 that are horizontally coaxially arranged, and a fixed connecting rod 223 that is vertically arranged between the upper disc body 221 and the lower disc body 222 for fixing the two. The rotating shaft 321 and the rotating cylinder 322 are both coaxially arranged with the lower disc body 222. The rotating shaft 321 is rotatably mounted on the lower disc body 222. Each set of synchronous drive devices is connected to two opposite sets of synchronous transmission in the four sets of first clamping assemblies 42. The rotating cylinder 322 is rotatably sleeved on the rotating shaft 321. The synchronous drive devices are arranged between the upper disc body 221 and the lower disc body 222.

[0048] The synchronous drive device can synchronously drive the two sets of clamping claws 31 to move towards or away from each other, so that the clamping claws 31 can achieve a fixed clamping effect whether facing a sleeve or a corrugated board. The upper plate 221 and the lower plate 222 are used to install the synchronous drive device. The upper plate 221 and the lower plate 222 are fixedly connected by the fixed connecting rod 223, so that they can achieve synchronous displacement when driven by the lifting drive mechanism 2.

[0049] When rotating, the rotating shaft 321 and the rotating drum 322 are respectively connected to the displacement drive component 32 therein to achieve different driving effects.

[0050] like Figures 8-10 As shown, the synchronous drive device includes a gear transmission component 323, a rotary driver 324, and a horizontal displacement transmission component 325. The rotary driver 324 is connected to the gear transmission component 323, the gear transmission component 323 is connected to the horizontal displacement transmission component 325, and the horizontal displacement transmission component 325 is connected to the clamping jaw 31.

[0051] The horizontal displacement transmission component 325 includes a threaded transmission rod 3251, a sliding seat 3252, and a transmission plate 3253. A limiting bracket 2221 for sliding the sliding seat 3252 is vertically provided on the lower plate 222. The lower plate 222 also includes a limiting clearance groove 2222 for avoiding the transmission plate 3253. The limiting bracket 2221 and the limiting clearance groove 2222 are both arranged radially along the lower plate 222. The threaded transmission rod 3251 is horizontally rotatable and mounted on the limiting bracket. On 2221, the axial direction of the threaded transmission rod 3251 is consistent with the length direction of the limit frame 2221. Every two coaxial threaded transmission rods 3251 are connected to one of the gear transmission components 323. The sliding seat 3252 is threadedly connected to the threaded transmission rod 3251. The transmission plate 3253 is vertically set. The top end of the transmission plate 3253 passes through the limit clearance groove 2222 and is fixedly connected to the sliding seat 3252. The bottom end of the transmission plate 3253 is fixedly connected to the clamping claw 31.

[0052] When the synchronous drive device is working, the rotary driver 324 drives the gear transmission component 323 to output, and the gear transmission component 323 drives the horizontal displacement transmission component 325 connected to it to move, thereby driving the clamping claw 31 connected below to move synchronously, realizing the displacement drive function. The gear transmission component 323 drives the threaded transmission rod 3251 to rotate, thereby driving the sliding seat 3252 connected to it to move along the length direction of the threaded transmission rod 3251, and driving the transmission plate 3253 fixedly connected to it to move, thereby driving the clamping claw 31 to move synchronously. The limiting clearance groove 2222 is used to avoid the transmission plate 3253, and the limiting frame 2221 is used to guide and limit the displacement of the sliding seat 3252.

[0053] like Figures 4-10As shown, the gear transmission component 323 includes a drive mounting bracket 3231, a drive gear 3232, a driven gear 3233, a drive helical gear 3234, and a driven helical gear 3235. The drive mounting bracket 3231 is fixedly mounted on the lower plate 222, and the rotary actuator 324 is mounted on the drive mounting bracket 3231. The drive gear 3232 is horizontally rotatable between the upper plate 221 and the lower plate 222. The rotary actuator 324 is connected to the drive gear 3232 in a transmission connection, and the driven gear... 3233 is fixedly sleeved on the outer wall of the rotating shaft 321 or the outer wall of the rotating cylinder 322. The driving gear 3232 meshes with the driven gear 3233. The driving helical gear 3234 is fixedly sleeved on the outer wall of the rotating shaft 321 or the outer wall of the rotating cylinder 322. The driven helical gear 3235 is vertically installed on one end of the threaded transmission rod 3251 near the rotating shaft 321. The driven helical gear 3235 meshes with the driving helical gear 3234. The driven helical gear 3235 is fixedly connected to the threaded transmission rod 3251.

[0054] The rotary actuator 324 drives the drive gear 3232 connected to it to rotate. The drive gear 3232 drives the driven gear 3233 that meshes with it to rotate, which in turn drives the rotating shaft 321 or the rotating drum 322 to rotate. When the rotating shaft 321 or the rotating drum 322 rotates, it drives the drive helical gear 3234 that is fixedly connected above it to rotate, which in turn drives the driven helical gear 3235 that meshes with the drive helical gear 3234 to rotate, thereby realizing the rotational drive function of the threaded transmission rod 3251. Moreover, one drive helical gear 3234 can drive two driven helical gears 3235 at the same time, that is, drive two sets of opposing clamping claws 31 in opposite directions.

[0055] A second spring 24 and a limiting telescopic rod 25 are provided between the mounting frame 23 and the disc-shaped mounting frame 22. The disc-shaped mounting frame 22 is located above the mounting frame 23. The two ends of the limiting telescopic rod 25 are respectively connected to the bottom end of the disc-shaped mounting frame 22 and the top end of the mounting frame 23. The spring is sleeved on the telescopic limiting rod. The mounting frame 23 and the frame 1 are slidably connected in the vertical direction.

[0056] The second spring 24 and the limiting telescopic rod 25 enable the lifting drive mechanism 2 to be connected to the mounting frame 23 when driving the disc mounting frame 22. During the lifting process, the lifting drive mechanism 2 first pulls the disc mounting frame 22 upward, and then pulls the mounting frame 23 upward through the elastic force of the second spring 24. Then the mounting frame 23 and the disc mounting frame 22 rise synchronously. During the descent, the lifting drive mechanism 2 drives the disc mounting frame 22 to descend, and drives the mounting frame 23 to descend synchronously. When the mounting frame 23 descends to the position, the outer clamping mechanism 4 is released, and the inner clamping mechanism 3 continues to descend to the predetermined height. Then the outer clamping mechanism 4 is clamped to clamp the outer wall of the newly added sleeve or corrugated plate. At this time, the inner clamping mechanism 3 can rise by itself.

[0057] A method for using a pile foundation drilling support device that can prevent borehole collapse includes the following steps:

[0058] S1: After the pile foundation drilling mechanism excavates and drills open the foundation pit, the drilled foundation pit is supported and reinforced by the pile foundation drilling support device.

[0059] S2: Determine whether the required reinforcement material is a sleeve or a corrugated board, and set the clamping direction of the clamping claw 31 in the inner clamping mechanism 3 accordingly. When it is a sleeve, the clamping direction of the clamping claw 31 is set outward. When it is a corrugated board, the clamping direction of the clamping claw 31 is set inward. The clamping position of the clamping claw 31 is locked by the polygonal plug 314.

[0060] S3: The lifting drive mechanism 2 drives the disc mounting frame 22 to descend, and drives the mounting frame 23 to descend synchronously. When the mounting frame 23 is in place, the outer clamping mechanism 4 is released, and the inner clamping mechanism 3 continues to descend to the predetermined height. The sleeve or corrugated plate clamped by the inner clamping mechanism 3 is pushed down. Then the outer clamping mechanism 4 is clamped to clamp the outer side wall of the sleeve or corrugated plate. At this time, the inner clamping mechanism 3 is released, and the lifting drive mechanism 2 drives the inner clamping mechanism 3 to rise. The connecting sleeve or corrugated plate is installed on the inner clamping mechanism 3.

[0061] S4: The rotary driver 324 drives the gear transmission component 323 to output, and the gear transmission component 323 drives the horizontal displacement transmission component 325 connected to it to move, thereby driving the clamping claw 31 connected below to move synchronously, realizing the displacement driving function. The gear transmission component 323 drives the threaded transmission rod 3251 to rotate, thereby driving the sliding seat 3252 connected to it to move along the length direction of the threaded transmission rod 3251, and driving the transmission plate 3253 fixedly connected to it to move, thereby driving the clamping claw 31 to move synchronously, realizing the clamping function of the inner clamping mechanism 3.

[0062] The above description is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.

Claims

1. A pile foundation drilling support device capable of preventing borehole collapse, characterized in that, It includes a frame (1) set above the pile foundation drilling mechanism, a lifting drive mechanism (2) installed on the top of the frame (1), and an inner clamping mechanism (3) and an outer clamping mechanism (4) that are connected to the lifting drive mechanism (2). The inner clamping mechanism (3) is located above the pile foundation drilling mechanism. Both the inner clamping mechanism (3) and the outer clamping mechanism (4) are mounted on the frame (1) and can slide against each other. The lifting drive mechanism (2) includes a lifting drive (21) mounted on the frame (1), a disc-shaped mounting bracket (22) connected to the lifting drive (21) in a transmission manner, and a mounting frame (23) connected to the mounting disc in a transmission manner. The inner clamping mechanism (3) is mounted on the disc-shaped mounting bracket (22), and the outer clamping mechanism (4) is mounted on the mounting frame (23). The inner clamping mechanism (3) includes four sets of clamping claws (31) that can slide horizontally and adjust the clamping direction, and a displacement drive assembly (32) for driving the clamping claws (31). The external clamping mechanism (4) includes four sets of pushing components (41) located on the four side walls of the mounting frame (23), and clamping components (42) that are drivenly connected to the pushing components (41). The clamping claw (31) includes a locking frame (311), a hinge frame (312), and an abutment plate (313). The locking frame (311) is drivenly connected to the displacement driving mechanism. The hinge frame (312) is hinged to the bottom of the locking frame (311) via a hinge shaft. The axial direction of the hinge shaft is perpendicular to the displacement direction of the displacement driving mechanism driven by the locking frame (311). The abutment plate (313) is detachably installed at the end of the hinge frame (312) away from the hinge shaft. The locking frame (311) A first polygonal mounting slot (3111) is provided perpendicular to the hinge axis. A locking plate (3121) is provided in the middle of the hinge frame (312). The locking plate (3121) is fixedly installed on the hinge frame (312). The locking plate (3121) is perpendicular to the hinge frame (312). The hinge frame (312) is located in the middle of the locking plate (3121). Both ends of the hinge plate are provided with second polygonal mounting slots (3122) that match the first polygonal mounting slot (3111). The locking frame (311) and the hinge frame (312) are connected by polygonal bolts (314) that pass through the first polygonal mounting slot (3111) and the second polygonal mounting slots (3122) in sequence. The clamping... The claw (31) also includes a connecting sleeve (315) and a locking sleeve (316). Four connecting sleeves (315) are provided, located at both ends of the locking frame (311) and at the upper and lower ends of the locking plate (3121) on the side away from the locking frame (311). Two locking sleeves (316) are provided, located on both sides of the polygonal bolt (314). The outer wall of the connecting sleeve (315) is threadedly connected to the first inner wall (3151) of the locking sleeve (316). Threaded posts (3141) are provided at both ends of the polygonal bolt (314), and the threaded posts (3141) are threadedly connected to the second inner wall (3152) of the locking sleeve (316). The hinge... The frame (312) is provided with an elastic movable plate (317) at one end away from the hinge axis. The contact plate (313) is detachably connected to the elastic movable plate (317). The elastic movable plate (317) and the hinge frame (312) are elastically connected by a first spring (318). The mounting frame (23) and the disc mounting frame (22) are provided with a second spring (24) and a limiting telescopic rod (25). The disc mounting frame (22) is located above the mounting frame (23). The two ends of the limiting telescopic rod (25) are respectively connected to the bottom end of the disc mounting frame (22) and the top end of the mounting frame (23). The spring is sleeved on the telescopic limiting rod. The mounting frame (23) and the frame (1) are slidably connected in the vertical direction.

2. The pile foundation drilling support device for preventing borehole collapse according to claim 1, characterized in that, The displacement drive assembly (32) includes a rotating shaft (321) and a rotating cylinder (322) arranged coaxially, and two sets of synchronous drive devices for driving the rotating shaft (321) and the rotating cylinder (322) to rotate respectively. The disc mounting frame (22) includes an upper disc body (221) and a lower disc body (222) arranged horizontally and coaxially, and a fixed connecting rod (223) arranged vertically between the upper disc body (221) and the lower disc body (222) for fixing the two. The rotating shaft (321) and the rotating cylinder (322) are both coaxially arranged with the lower disc body (222). The rotating shaft (321) is rotatably arranged on the lower disc body (222). Each set of synchronous drive devices is connected to two opposite sets of synchronous transmission in the four sets of first clamping assemblies (42). The rotating cylinder (322) is rotatably sleeved on the rotating shaft (321). The synchronous drive device is arranged between the upper disc body (221) and the lower disc body (222).

3. The pile foundation drilling support device for preventing borehole collapse according to claim 2, characterized in that, The synchronous drive device includes a gear transmission component (323), a rotary driver (324), and a horizontal displacement transmission component (325). The rotary driver (324) is connected to the gear transmission component (323), the gear transmission component (323) is connected to the horizontal displacement transmission component (325), and the horizontal displacement transmission component (325) is connected to the clamping jaw (31).

4. A pile foundation drilling support device capable of preventing borehole collapse according to claim 3, characterized in that, The horizontal displacement transmission component (325) includes a threaded transmission rod (3251), a sliding seat (3252), and a transmission plate (3253). A limiting frame (2221) for sliding the sliding seat (3252) is vertically provided on the lower plate (222). The lower plate (222) also includes a limiting clearance groove (2222) for avoiding the transmission plate (3253). The directions of the limiting frame (2221) and the limiting clearance groove (2222) are both arranged radially along the lower plate (222). The threaded transmission rod (3251) is horizontally rotatable within the limiting frame. On the positioning frame (2221), the axial direction of the threaded transmission rod (3251) is consistent with the length direction of the limiting frame (2221). Every two coaxial threaded transmission rods (3251) are connected to one of the gear transmission components (323). The sliding seat (3252) is threadedly connected to the threaded transmission rod (3251). The transmission plate (3253) is vertically set. The top of the transmission plate (3253) passes through the limiting clearance groove (2222) and is fixedly connected to the sliding seat (3252). The bottom of the transmission plate (3253) is fixedly connected to the clamping claw (31).

5. A pile foundation drilling support device capable of preventing borehole collapse according to claim 4, characterized in that, The gear transmission component (323) includes a drive mounting bracket (3231), a drive gear (3232), a driven gear (3233), a drive helical gear (3234), and a driven helical gear (3235). The drive mounting bracket (3231) is fixedly mounted on the lower plate (222), and the rotary actuator (324) is mounted on the drive mounting bracket (3231). The drive gear (3232) is horizontally rotatable between the upper plate (221) and the lower plate (222). The rotary actuator (324) is connected to the drive gear (3232) in a transmission connection, and the driven gear (3235) is driven by the drive gear (3231). 3233) is fixedly sleeved on the outer wall of the rotating shaft (321) or the outer wall of the rotating cylinder (322). The driving gear (3232) meshes with the driven gear (3233). The driving helical gear (3234) is fixedly sleeved on the outer wall of the rotating shaft (321) or the outer wall of the rotating cylinder (322). The driven helical gear (3235) is vertically installed on one end of the threaded transmission rod (3251) near the rotating shaft (321). The driven helical gear (3235) meshes with the driving helical gear (3234). The driven helical gear (3235) is fixedly connected to the threaded transmission rod (3251).

6. The method of using a pile foundation drilling support device capable of preventing borehole collapse as described in any one of claims 1-5, characterized in that, Includes the following steps: S1: After the pile foundation drilling mechanism excavates and drills open the foundation pit, the drilled foundation pit is supported and reinforced by the pile foundation drilling support device. S2: Determine whether the required reinforcement material is a sleeve or a corrugated board, and set the clamping direction of the clamping claw (31) in the inner clamping mechanism (3). When it is a sleeve, the clamping direction of the clamping claw (31) is set outward. When it is a corrugated board, the clamping direction of the clamping claw (31) is set inward. The clamping position of the clamping claw (31) is locked by the polygonal plug (314). S3: The lifting drive mechanism (2) drives the disc mounting frame (22) to descend, and drives the mounting frame (23) to descend synchronously. When the mounting frame (23) is in place, the outer clamping mechanism (4) is released, and the inner clamping mechanism (3) is driven to descend to the predetermined height. The sleeve or corrugated plate clamped by the inner clamping mechanism (3) is pushed down, and the outer clamping mechanism (4) is clamped again to clamp the outer side wall of the sleeve or corrugated plate. At this time, the inner clamping mechanism (3) is released, and the inner clamping mechanism (3) is driven to rise by the lifting drive mechanism (2) to install the connecting sleeve or corrugated plate on the inner clamping mechanism (3). S4: The rotary driver (324) drives the gear transmission component (323) to output, and then the gear transmission component (323) drives the horizontal displacement transmission component (325) connected to it to move, thereby driving the clamping claw (31) connected below to move synchronously, realizing the displacement driving function. The gear transmission component (323) drives the threaded transmission rod (3251) to rotate, thereby driving the sliding seat (3252) connected to it to move along the length direction of the threaded transmission rod (3251), and driving the transmission plate (3253) fixedly connected to it to move, thereby driving the clamping claw (31) to move synchronously, realizing the clamping function of the inner clamping mechanism (3).

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