High-pressure jet grouting pile waterproof curtain structure reinforcing device for deep foundation pit construction
By designing a high-pressure rotary spray pile water-stop curtain structure reinforcement device for deep foundation pit construction, the problems of steel cage displacement, rotary spray pipe shaking and slurry waste are solved, and higher construction quality and reinforcement effect are achieved.
Patent Information
- Application Number
- CN202411895994.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-23
- Publication Date
- 2025-03-07
AI Technical Summary
During deep foundation pit construction, the steel cage of high-pressure rotary spray piles is prone to displacement or shaking, resulting in construction quality problems; the rotary spray pipe is prone to shake during use, affecting the uniformity of the slurry spray and the strength of the solid body; when the grouting amount is too large, the slurry cannot be completely absorbed by the pile body, causing waste.
A high-pressure rotary spray pile water-stop curtain structure reinforcement device for deep foundation pit construction is designed, including base, rotary spray pile, support mechanism, positioning mechanism and fixing mechanism. Through the combination of these mechanisms, the rebar cage can be limited to prevent displacement; reduce jitter of the rotary nozzle during use; and prevent slurry from flowing through appropriate design.
It effectively prevents the displacement and shaking of the steel cage during the fixing process, improves the construction quality; reduces the shaking of the rotary nozzle, improves the uniformity of the slurry jet and the strength of the solid body; avoids slurry waste, and improves the reinforcement effect of the rotary nozzle pile.
Smart Images
Figure CN119571807A_ABST
Abstract
Description
Technical Field
[0001] The invention relates to the technical field of high-pressure rotary jet pile water-stop curtains, in particular to a high-pressure rotary jet pile water-stop curtain structure reinforcement device for deep foundation pit construction. Background Art
[0002] High-pressure jet-jet pile water-stop curtain is a commonly used underground engineering waterproofing technology, mainly used to prevent or reduce the inflow of groundwater from the side walls and bottom of the foundation pit. It sprays cement slurry into the soil layer through a high-pressure rotating nozzle, and mixes with the soil to form a continuous reinforcement body. This reinforcement body can effectively block the flow of groundwater, prevent groundwater from infiltrating into the foundation pit, and ensure the dryness and stability of the foundation pit.
[0003] However, in order to improve the bearing capacity and strength of the rotary jet piles, a steel cage is placed in the soil layer with the drilled hole. When the rotary jet pipe sprays slurry into the soil layer, since there is no component to limit the steel cage, the flow of concrete slurry may cause the steel cage to shift or shake, thereby causing problems with the construction quality. In addition, when the rotary jet pipe moves into the soil layer, it is prone to shaking. The shaking of the rotary jet pipe will cause uneven slurry spraying, affecting the strength and uniformity of the consolidated body, and further affecting the reinforcement effect of the rotary jet pile. When the grouting volume significantly exceeds the amount of slurry required for rotary jet consolidation, the slurry cannot be completely absorbed by the pile body, and thus flows everywhere, causing waste. Summary of the invention
[0004] In view of the problems in the prior art, the present invention provides a high-pressure rotary jet grouting pile water-stop curtain structure reinforcement device for deep foundation pit construction.
[0005] The technical solution adopted by the present invention to solve the technical problem is: a high-pressure rotary jet pile water-stop curtain structure reinforcement device for deep foundation pit construction, comprising a base; a rotary jet pile is arranged in the base; a support mechanism is fixedly installed on the top of the base; a positioning mechanism is slidably installed on the support mechanism; a fixing mechanism is arranged on the top of the positioning mechanism; two clamping plates are slidably installed on the fixing mechanism; a limiting mechanism is fixed on the clamping plate; a rotary jet pipe is rotatably installed between the two limiting mechanisms;
[0006] Specifically, the limiting mechanism includes a positioning block and a limiting plate, the top end of the clamping plate is fixedly connected to the positioning block, the two positioning blocks are provided with limiting grooves, the limiting plates are clamped and installed in the limiting grooves, a clamping rod passes through the positioning block and the limiting plate, the end of the clamping rod is threadedly connected with a rotating block, the rotating block is in contact with the limiting plate, two groups of clamping holes are provided on the positioning block, a compression spring is fixedly installed in the positioning block, a resist block is fixedly connected to the compression spring, the resist block is slidably connected to the positioning block, the limiting plate is clamped and connected to the positioning block, the positioning block and the resist block are both arranged in an arc structure, and a clamping rod is clamped and installed in the clamping hole.
[0007] Specifically, the fixing mechanism includes a fixed block and a pressure plate, the positioning block is located at the top of the pressure plate, two fixed blocks are symmetrically fixedly connected on the pressure plate, a frame is fixedly installed on the fixed block, a socket and two sliding grooves are provided in the pressure plate, a card plate is slidably installed in the sliding groove, the positioning block and the card plate are both slidably connected to the pressure plate, a rotary spray pipe is rotatably installed in the socket, the rotary spray pipe is rotatably connected to the stop block, and the rotary spray pipe passes through the inner wall of the base and the pressure plate.
[0008] Specifically, the supporting mechanism includes a sleeve and a support, and a plurality of supports are equidistantly installed in a ring shape on the top of the base, and two connecting blocks are symmetrically fixedly installed on the support, and a positioning rod is threadedly connected to the connecting block, and the positioning rod is threadedly connected to the base, and a sleeve is abutted on the base, and a support plate and a plurality of mounting blocks are fixedly connected to the sleeve, and a through hole is provided in the support plate, and the support and the mounting block are rotatably connected, the sleeve is located at the top of the rotary jet pile, and the sleeve is connected to the interior of the support plate through the through hole, and the diameter of the through hole is equal to the inner diameter of the sleeve, and the inner diameter of the sleeve is equal to the diameter of the rotary jet pile.
[0009] Specifically, the positioning mechanism includes a slider and a hydraulic rod. Two hydraulic rods are symmetrically fixedly installed on the support plate. The telescopic end of the hydraulic rod is fixedly connected to a slider. A sliding frame is fixedly installed on the slider. The two sliding frames are respectively fixedly connected with a first clamping block and a second clamping block. The second clamping block is provided with a clamping groove. The first clamping block is clamped and installed in the clamping groove. The first clamping block and the second clamping block are both slidably connected to the support plate. The first clamping block and the second clamping block are clamped and connected. The inner walls of the first clamping block and the second clamping block are arranged in an arc structure.
[0010] The beneficial effects of the present invention are:
[0011] (1) The high-pressure jet grouting water-stop curtain structure reinforcement device for deep foundation pit construction described in the present invention is to place the base on the soil surface where the jet grouting piles are to be set, and then use tools to fix the support mechanism on the top of the base so that it can block the top of the jet grouting piles and prevent the slurry on the ground near the top of the jet grouting piles from flowing around, that is, the base is moved to the soil surface where the jet grouting piles are to be set, a hole is set at the part of the base near the jet grouting piles, and the sleeve fixed at the bottom end of the support plate is placed in a position aligned with the hole, so that the inside of the sleeve is aligned with the base. The inside of the sleeve is connected. Since the side wall of the sleeve is annular and equidistantly provided with a number of mounting blocks, when the sleeve is fixed, the support rotatably arranged in the mounting block can be rotated. The support is arranged in an L-shaped structure. When its bottom end contacts the surface of the base, the positioning rod can be threadedly installed into the two connecting blocks fixed on both sides of the support. When the end of the positioning rod is threadedly installed in the base, the sleeve can be fixed to the top of the base. In this way, when the rotary jet pipe sprays slurry into the soil layer, the slurry near the top of the rotary jet pile can be prevented from flowing to the surroundings, thereby improving the solidification effect of the rotary jet pile.
[0012] (2) The high-pressure jet grouting pile water-stop curtain structure reinforcement device for deep foundation pit construction described in the present invention can place a steel cage into the soil layer through the equipment, and start the positioning mechanism to limit the top of the steel cage, which is beneficial to prevent the steel cage from being easily displaced or shaken during the fixing process. That is, in order to improve the bearing capacity of the jet grouting pile and increase the strength of the jet grouting pile, when the steel cage is set in the pile, the steel cage can be placed in the soil layer with a hole drilled, and the top part is higher than the height of the sleeve. At this time, the hydraulic rod installed in the support plate is started, and the telescopic end of the hydraulic rod is fixedly connected to the slider fixed at the bottom of the sliding frame. When the hydraulic rod is started, the slider can drive the sliding frame to slide into the inside of the support plate. The two sliding frames are respectively installed with a first clamping block and a second clamping block. When the sliding frames slide toward each other, the first clamping block will be clamped together with the second clamping block. Since the inner walls of the first clamping block and the second clamping block are both arranged in an arc structure, when they contact the steel cage, the steel cage can be placed at the center of the through hole, which is beneficial to prevent the steel cage from being displaced or shaken during the fixing process.
[0013] (3) The present invention discloses a high-pressure rotary jet pile water-stop curtain structure reinforcement device for deep foundation pit construction. The high-pressure rotary jet drilling rig moves the fixing mechanism to the position at the top of the supporting mechanism, and drives the rotary jet pipe to rotate into the base through the device. The setting of the limiting mechanism is convenient for reducing the shaking of the rotary jet pipe during use, that is, when the high-pressure rotary jet drilling rig drills a hole in the soil layer, the frame fixed on the equipment drives the fixing block and the pressure plate to move to the top of the sleeve. A sliding groove is provided in the pressure plate. The card plate is installed from the end of the sliding groove into the pressure plate, and the card plate is pushed to make it contact with the inner wall of the pressure plate. Since a positioning block is fixedly installed at the top of the card plate, when the two card plates are in a contacting state with the pressure plate, the two positioning blocks can be in a clamping state. The limiting plate is clamped and installed in the limiting groove provided in the positioning block, so that the two positioning blocks can be clamped. The cam is used to limit the position of the positioning block, and then the clamping rod passes through the inner walls of the limiting plate and the positioning block, and a tool is used to thread the rotating block to the two ends of the clamping rod. When the rotating block is in a state of conflict with the side walls of the limiting plate, the two positioning blocks can be fixed by the limiting plate; when the equipment drives the rotary spray pipe to spray slurry into the soil layer, since the top of the rotary spray pipe is fixed to the equipment by the mounting assembly, and its bottom is not provided with an assembly to limit it, the rotary spray pipe is prone to jitter during operation, and a resist block is slidably installed in the positioning block. When the rotary spray pipe vibrates, the side wall contacts the resist block, and the resist block is squeezed by the extrusion force to squeeze the compression spring installed in the positioning block. The resist block relieves the pressure on the rotary spray pipe and is reset under the drive of the reaction force of the compression spring. When the rotary spray pipe rotates to spray, the resist blocks installed in the two positioning blocks limit it, which can reduce the jitter generated during the operation of the rotary spray pipe. BRIEF DESCRIPTION OF THE DRAWINGS
[0014] The present invention is further described below in conjunction with the accompanying drawings and embodiments.
[0015] Figure 1 A schematic diagram of the overall structure of a preferred embodiment of a high-pressure rotary jet pile water-stop curtain structure reinforcement device for deep foundation pit construction provided by the present invention;
[0016] Figure 2 for Figure 1 An enlarged schematic diagram of the structure of section A is shown;
[0017] Figure 3 It is a schematic diagram of the connection structure between the pressing plate and the positioning block of the present invention;
[0018] Figure 4 It is a schematic diagram of the connection structure between the frame and the fixing block of the present invention;
[0019] Figure 5 for Figure 4 An enlarged schematic diagram of the structure of part B is shown;
[0020] Figure 6 It is a schematic diagram of the connection structure between the support plate and the hydraulic rod of the present invention;
[0021] Figure 7 for Figure 6 An enlarged schematic diagram of the C-section structure is shown;
[0022] Figure 8 It is a schematic diagram of the connection structure between the sleeve and the support plate of the present invention;
[0023] Fig. 9 for Figure 8 An enlarged schematic diagram of the D-section structure is shown;
[0024] Fig.10 It is a schematic diagram of the connection structure between the pressing plate and the clamping plate of the present invention;
[0025] Fig.11 It is a schematic diagram of the connection structure between the positioning block and the clamping plate of the present invention.
[0026] In the figure: 1, base; 2, jet grouting pile; 3, supporting mechanism; 301, sleeve; 302, support; 303, supporting plate; 304, connecting block; 305, positioning rod; 306, through hole; 307, mounting block; 4, fixing mechanism; 401, frame; 402, fixing block; 403, pressure plate; 404, jack; 405, sliding slot; 5, limiting mechanism; 501, positioning block; 502, limiting plate; 503, rotating block; 504, resisting block; 505, clamping rod; 506, clamping hole; 507, limiting slot; 508, compression spring; 6, jet grouting pipe; 7, positioning mechanism; 701, slider; 702, sliding frame; 703, first clamping block; 704, hydraulic rod; 705, second clamping block; 706, clamping slot; 8, clamping plate. DETAILED DESCRIPTION
[0027] In order to make the technical means, creative features, objectives and effects achieved by the present invention easy to understand, the present invention is further explained below in conjunction with specific implementation methods.
[0028] like Figure 1 , Figure 3 , Figure 4 , Figure 6 , Figure 8 , Fig.10 and Fig.11 As shown, a high-pressure rotary jet pile water-stop curtain structure reinforcement device for deep foundation pit construction described in the present invention comprises a base 1; a rotary jet pile 2 is arranged in the base 1; a support mechanism 3 is fixedly installed on the top of the base 1; a positioning mechanism 7 is slidably installed on the support mechanism 3; a fixing mechanism 4 is arranged on the top of the positioning mechanism 7; two clamping plates 8 are slidably installed on the fixing mechanism 4; a limiting mechanism 5 is fixed on the clamping plate 8; a rotary jet pipe 6 is rotatably installed between the two limiting mechanisms 5;
[0029] Specifically, Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 and Fig.11 As shown, the limiting mechanism 5 includes a positioning block 501 and a limiting plate 502, the top of the clamping plate 8 is fixedly connected with the positioning block 501, and the two positioning blocks 501 are provided with limiting grooves 507, and the limiting grooves 507 are engaged with the limiting plates 502. A clamping rod 505 runs through the positioning block 501 and the limiting plate 502, and the end of the clamping rod 505 is threadedly connected with a rotating block 503, and the rotating block 503 is in conflict with the limiting plate 502. Two groups of clamping holes 506 are provided on the positioning block 501, and a compression spring 508 is fixedly installed in the positioning block 501, and a stop block 504 is fixedly connected to the compression spring 508. The stop block 50 4 is slidably connected with the positioning block 501, the limiting plate 502 is snap-fitted with the positioning block 501, the positioning block 501 and the stop block 504 are both arranged in an arc structure, and a clamping rod 505 is snap-fitted on the clamping hole 506. The high-pressure rotary jet drilling rig moves the fixing mechanism 4 to a position located at the top of the supporting mechanism 3, and drives the rotary jet pipe 6 to rotate into the base 1 through the equipment. The setting of the limiting mechanism 5 is convenient for reducing the shaking of the rotary jet pipe 6 during use, that is, when the high-pressure rotary jet drilling rig drills a hole in the soil layer, the frame 401 fixed on the equipment drives the fixing block 402 and the pressing plate 403 to move to the top of the sleeve 301, and the pressing plate 403 is in the A sliding groove 405 is provided, and the card plate 8 is installed into the pressure plate 403 from the end of the sliding groove 405, and the card plate 8 is pushed to make it conflict with the inner wall of the pressure plate 403. Since a positioning block 501 is fixedly installed on the top of the card plate 8, when the two card plates 8 are in a conflicting state with the pressure plate 403, the two positioning blocks 501 can be in a clamping state, and the limiting plate 502 is clamped and installed to the limiting groove 507 provided in the positioning block 501, the two positioning blocks 501 can be limited, and then the clamping rod 505 is passed through the limiting plate 502 and the inner wall of the positioning block 501, and the rotating block 503 is threadedly installed to the two ends of the clamping rod 505 using a tool. When the rotating block 503 is in contact with When the side walls of the limiting plate 502 are in a state of conflict, the two positioning blocks 501 can be fixed by the limiting plate 502; when the equipment drives the rotary spraying tube 6 to spray slurry into the soil layer, it is easy to generate vibration, and a resistance block 504 is slidably installed in the positioning block 501. When the rotary spraying tube 6 vibrates, the side wall contacts the resistance block 504, and the resistance block 504 is squeezed by the extrusion force to squeeze the compression spring 508 installed in the positioning block 501. The resistance block 504 relieves the pressure on the rotary spraying tube 6 and is reset under the drive of the reaction force of the compression spring 508. When the rotary spraying tube 6 rotates to spray, the resistance blocks 504 installed in the two positioning blocks 501 both limit it, which can reduce the vibration generated during the operation of the rotary spraying tube 6.
[0030] Specifically, Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 , Fig.10 and Fig.11 As shown, the fixing mechanism 4 includes a fixing block 402 and a pressing plate 403, the positioning block 501 is located at the top of the pressing plate 403, two fixing blocks 402 are symmetrically fixedly connected to the pressing plate 403, a frame 401 is fixedly installed on the fixing block 402, a socket 404 and two sliding grooves 405 are provided in the pressing plate 403, a clamping plate 8 is slidably installed at the sliding groove 405, the positioning block 501 and the clamping plate 8 are both slidably connected to the pressing plate 403, a rotary spray pipe 6 is rotatably installed at the socket 404, the rotary spray pipe 6 is rotatably connected to the block 504, and the rotary spray pipe 6 passes through the inner wall of the base 1 and the pressing plate 403.
[0031] Specifically, Figure 1 , Figure 2 , Figure 6 , Figure 7 , Figure 8 and Fig. 9As shown, the support mechanism 3 includes a sleeve 301 and a support 302. The top of the base 1 is annularly and equidistantly mounted with a plurality of supports 302. Two connecting blocks 304 are symmetrically and fixedly mounted on the support 302. A positioning rod 305 is threadedly connected to the connecting block 304. The positioning rod 305 is threadedly connected to the base 1. The base 1 is abutted with a sleeve 301. A support plate 303 and a plurality of mounting blocks 307 are fixedly connected to the sleeve 301. The support plate 303 A through hole 306 is provided inside, the support 302 is rotatably connected with the mounting block 307, the sleeve 301 is located at the top of the jet grouting pile 2, and the sleeve 301 is connected to the inside of the support plate 303 through the through hole 306, the diameter of the through hole 306 is equal to the inner diameter of the sleeve 301, and the inner diameter of the sleeve 301 is equal to the diameter of the jet grouting pile 2. The base 1 is placed on the soil surface where the jet grouting pile 2 is to be set, and then the support mechanism 3 is fixed to the top of the base 1 using a tool so that it is rotatable. The top of the jet pile 2 is shielded to prevent the slurry on the ground near the top of the jet pile 2 from flowing around, that is: the base 1 is moved to the soil surface where the jet pile 2 needs to be set inside, and the base 1 is provided with a hole position near the jet pile 2, and the sleeve 301 fixed at the bottom end of the support plate 303 is placed in a position aligned with the hole position, so that the inside of the sleeve 301 is connected with the inside of the base 1. Since the side wall of the sleeve 301 is annular and equidistantly provided with a plurality of mounting blocks 307, when the sleeve 301 is fixed, the mounting blocks can be rotated. The support 302 is rotatably arranged in 307, and the support 302 is arranged in an L-shaped structure. When its bottom end contacts the surface of the base 1, the positioning rod 305 can be threadedly installed in the two connecting blocks 304 fixed on both sides of the support 302. When the end of the positioning rod 305 is threadedly installed in the base 1, the sleeve 301 can be fixed on the top of the base 1. In this way, when the rotary jet pipe 6 sprays slurry into the soil layer, the slurry near the top of the rotary jet pile 2 can be prevented from flowing to the surroundings, so as to improve the solidification effect of the rotary jet pile 2.
[0032] Specifically, Figure 1 , Figure 2 , Figure 6 , Figure 7 , Figure 8 and Fig. 9As shown, the positioning mechanism 7 includes a slider 701 and a hydraulic rod 704. Two hydraulic rods 704 are symmetrically fixedly installed on the support plate 303. The telescopic end of the hydraulic rod 704 is fixedly connected with the slider 701. The slider 701 is fixedly installed with a sliding frame 702. The two sliding frames 702 are respectively fixedly connected with a first clamping block 703 and a second clamping block 705. The second clamping block 705 is provided with a clamping groove 706. The first clamping block 703 is clamped and installed at the clamping groove 706. The first clamping block 703 and the second clamping block 705 are both slidably connected to the support plate 303. The first clamping block 703 and the second clamping block 705 are clamped and connected. The inner walls of the first clamping block 703 and the second clamping block 705 are arranged in an arc structure. The steel cage is placed in the soil layer by the equipment, and the positioning mechanism 7 is started to limit the top of the steel cage, which is conducive to preventing it from being easily displaced or shaken during the fixing process. , that is, in order to improve the bearing capacity of the rotary jet pile 2 and increase the strength of the rotary jet pile 2, when the steel cage is set in the pile, the steel cage can be placed in the soil layer of the drilled hole, and the top part is higher than the height of the sleeve 301. At this time, the hydraulic rod 704 installed in the support plate 303 is started, and the telescopic end of the hydraulic rod 704 is fixedly connected with the slider 701 fixed at the bottom end of the sliding frame 702. When the hydraulic rod 704 is started, the slider 701 can drive the sliding frame 702 to slide inside the support plate 303. The two sliding frames 702 are respectively equipped with a first clamping block 703 and a second clamping block 705. When the sliding frames 702 slide toward each other, the first clamping block 703 will be clamped together with the second clamping block 705. Since the inner walls of the first clamping block 703 and the second clamping block 705 are both arranged in an arc structure, when they contact the steel cage, the steel cage can be located at the center of the through hole 306, which is beneficial to prevent the steel cage from being displaced or shaking during the fixing process.
[0033] When the present invention is in use, first, the base 1 is moved to the soil surface where the rotary jet pile 2 is required to be set inside. The base 1 is provided with a hole position near the rotary jet pile 2. The sleeve 301 fixed at the bottom end of the support plate 303 is placed in a position aligned with the hole position, so that the interior of the sleeve 301 is connected with the interior of the base 1. Since the side wall of the sleeve 301 is annular and equidistantly provided with a plurality of mounting blocks 307, when the sleeve 301 is fixed, the support 302 rotatably set in the mounting block 307 can be rotated. The support 302 is arranged in an L-shaped structure. When its bottom end contacts the surface of the base 1, the positioning rod 305 can be threadedly installed in the two connecting blocks 304 fixed on both sides of the support 302. When the end of the positioning rod 305 is threadedly installed in the base 1, the sleeve 301 can be fixed to the top of the base 1. In this way, when the rotary jet pipe 6 sprays slurry into the soil layer, the slurry near the top of the rotary jet pile 2 can be prevented from flowing to the surroundings, which is convenient for improving the solidification effect of the rotary jet pile 2.
[0034] In order to improve the bearing capacity of the rotary jet pile 2 and increase the strength of the rotary jet pile 2, when setting the steel cage in the pile, the steel cage can be placed in the soil layer with a hole drilled, and the top part is higher than the height of the sleeve 301. At this time, the hydraulic rod 704 installed in the support plate 303 is started, and the telescopic end of the hydraulic rod 704 is fixedly connected with the slider 701 fixed at the bottom end of the sliding frame 702. When the hydraulic rod 704 is started, the slider 701 can drive the sliding frame 702 to slide towards the inside of the support plate 303. The two sliding frames 702 are respectively equipped with a first clamping block 703 and a second clamping block 705. When the sliding frames 702 slide toward each other, the first clamping block 703 will be clamped together with the second clamping block 705. Since the inner walls of the first clamping block 703 and the second clamping block 705 are both arranged in an arc structure, when they contact the steel cage, the steel cage can be located at the center of the through hole 306, which is beneficial to prevent the steel cage from being displaced or shaking during the fixing process.
[0035] When the high-pressure rotary jet drilling rig drills a hole in the soil layer, the frame 401 fixed on the equipment will drive the fixed block 402 and the pressure plate 403 to move to the top of the sleeve 301. A sliding groove 405 is provided in the pressure plate 403. The clamping plate 8 is installed into the pressure plate 403 from the end of the sliding groove 405, and the clamping plate 8 is pushed to make it conflict with the inner wall of the pressure plate 403. Since the top of the clamping plate 8 is fixedly installed with a positioning block 501, when both clamping plates 8 are in a conflicting state with the pressure plate 403, the two positioning blocks 501 can be in a clamping state, and the limiting plate 502 is clamped and installed in the limiting groove 507 provided in the positioning block 501, the two positioning blocks 501 can be limited, and then the clamping rod 505 passes through the limiting plate 502 and the inner wall of the positioning block 501, and the tool The rotating block 503 is threadedly installed on the two ends of the clamping rod 505. When the rotating block 503 and the side wall of the limiting plate 502 are in a state of conflict, the two positioning blocks 501 can be fixed by the limiting plate 502; when the equipment drives the rotary spraying pipe 6 to spray slurry into the soil layer, it is easy to shake, and a stop block 504 is slidably installed in the positioning block 501. When the rotary spraying pipe 6 shakes, the side wall contacts the stop block 504, and the stop block 504 is squeezed by the extrusion force to squeeze the compression spring 508 installed in the positioning block 501, and the stop block 504 relieves the pressure on the rotary spraying pipe 6. Driven by the reaction force of the compression spring 508, it is reset again. When the rotary spraying pipe 6 rotates to spray, the stop blocks 504 installed in the two positioning blocks 501 limit it, which can reduce the shaking generated during the operation of the rotary spraying pipe 6;
[0036] It will be apparent to those skilled in the art that the invention is not limited to the details of the exemplary embodiments described above and that the invention can be implemented in other specific forms without departing from the spirit or essential features of the invention. Therefore, the embodiments should be considered exemplary and non-limiting in all respects, and the scope of the invention is defined by the appended claims rather than the foregoing description, and it is intended that all variations falling within the meaning and scope of the equivalent elements of the claims be included in the invention. Any reference numeral in a claim should not be considered as limiting the claim to which it relates.
[0037] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.
Claims
1. A high-pressure jet grouting pile water-stop curtain structure reinforcement device for deep foundation pit construction, characterized in that: The invention comprises a base (1); a jet grouting pile (2) is arranged in the base (1); a supporting mechanism (3) is fixedly installed on the top of the base (1); a positioning mechanism (7) is slidably installed on the supporting mechanism (3); a fixing mechanism (4) is arranged on the top of the positioning mechanism (7); two clamping plates (8) are slidably installed on the fixing mechanism (4); a limiting mechanism (5) is fixed on the clamping plate (8); a jet grouting pipe (6) is rotatably installed between the two limiting mechanisms (5); The limiting mechanism (5) comprises a positioning block (501) and a limiting plate (502), the top end of the clamping plate (8) is fixedly connected with the positioning block (501), both positioning blocks (501) are provided with limiting grooves (507), the limiting grooves (507) are engaged and installed with the limiting plates (502), a clamping rod (505) passes through the positioning block (501) and the limiting plate (502), the end of the clamping rod (505) is threadedly connected with a rotating block (503), the rotating block (503) contacts the limiting plate (502), the positioning block (501) is provided with two groups of clamping holes (506), a compression spring (508) is fixedly installed in the positioning block (501), a resisting block (504) is fixedly connected to the compression spring (508), and the resisting block (504) is slidably connected to the positioning block (501).
2. A high-pressure jet grouting pile water-stop curtain structure reinforcement device for deep foundation pit construction according to claim 1, characterized in that: The limiting plate (502) is snap-fitted to the positioning block (501); the positioning block (501) and the stop block (504) are both arranged in an arc surface structure; and a clamping rod (505) is snap-fitted to the clamping hole (506).
3. The high-pressure jet grouting pile water-stop curtain structure reinforcement device for deep foundation pit construction according to claim 1, characterized in that: The fixing mechanism (4) comprises a fixing block (402) and a pressing plate (403); the positioning block (501) is located at the top of the pressing plate (403); two fixing blocks (402) are symmetrically fixedly connected to the pressing plate (403); a frame (401) is fixedly mounted on the fixing blocks (402); a plug hole (404) and two sliding grooves (405) are provided in the pressing plate (403); a card plate (8) is slidably mounted on the sliding groove (405).
4. A high-pressure jet grouting pile water-stop curtain structure reinforcement device for deep foundation pit construction according to claim 3, characterized in that: The positioning block (501) and the clamping plate (8) are both slidably connected to the pressing plate (403), and the insertion hole (404) is rotatably mounted with a rotary spray pipe (6).
5. The high-pressure jet grouting pile water-stop curtain structure reinforcement device for deep foundation pit construction according to claim 3, characterized in that: The rotary spray pipe (6) is rotatably connected to the stop block (504), and the rotary spray pipe (6) penetrates the inner wall of the base (1) and the pressure plate (403).
6. A high-pressure jet grouting pile water-stop curtain structure reinforcement device for deep foundation pit construction according to claim 1, characterized in that: The support mechanism (3) comprises a sleeve (301) and a support (302); a plurality of supports (302) are equidistantly mounted in a ring shape on the top of the base (1); two connecting blocks (304) are symmetrically fixedly mounted on the support (302); a positioning rod (305) is threadedly connected to the connecting block (304); the positioning rod (305) is threadedly connected to the base (1); a sleeve (301) is abutted on the base (1); a support plate (303) and a plurality of mounting blocks (307) are fixedly connected to the sleeve (301); a through hole (306) is provided in the support plate (303); and the support (302) and the mounting block (307) are rotatably connected.
7. A high-pressure jet grouting pile water-stop curtain structure reinforcement device for deep foundation pit construction according to claim 6, characterized in that: The sleeve (301) is located at the top of the jet-jet pile (2), and the sleeve (301) is connected to the interior of the support plate (303) through a through hole (306).
8. The high-pressure jet grouting pile water-stop curtain structure reinforcement device for deep foundation pit construction according to claim 6, characterized in that: The diameter of the through hole (306) is equal to the inner diameter of the sleeve (301), and the inner diameter of the sleeve (301) is equal to the diameter of the jet-jet pile (2).
9. The high-pressure jet grouting pile water-stop curtain structure reinforcement device for deep foundation pit construction according to claim 6, characterized in that: The positioning mechanism (7) comprises a slider (701) and a hydraulic rod (704); two hydraulic rods (704) are symmetrically fixedly mounted on the support plate (303); the telescopic ends of the hydraulic rods (704) are fixedly connected to the slider (701); a sliding frame (702) is fixedly mounted on the slider (701); a first clamping block (703) and a second clamping block (705) are respectively fixedly connected to the two sliding frames (702); a clamping groove (706) is provided on the second clamping block (705); the first clamping block (703) is clamped and mounted in the clamping groove (706); and both the first clamping block (703) and the second clamping block (705) are slidably connected to the support plate (303).
10. A high-pressure jet grouting pile water-stop curtain structure reinforcement device for deep foundation pit construction according to claim 9, characterized in that: The first clamping block (703) and the second clamping block (705) are clamped and connected, and the inner walls of the first clamping block (703) and the second clamping block (705) are arranged in an arc surface structure.