High-precision guiding and rectifying device for water pressure balanced caisson

Abstract

The utility model discloses water pressure balance caisson high accuracy guiding deviation rectification device belongs to the field of construction engineering technique, including the positioning ring, the rectification mechanism of detachable installation in the positioning ring and with the guiding mechanism of caisson cooperation, and the rectification mechanism includes the installation ring, the bearing frame, the jack and the tilt sensor, and the bearing frame is connected with the limiting slot of positioning ring and realizes quick deployment, and the tilt sensor detects caisson tilt data, and controls the embedded block of jack jacking caisson inner wall, realizes accurate rectification, and the guiding mechanism includes the fixed frame and the guide groove of installation in caisson outer wall, and the guide wheel in fixed frame rolls in the guide groove. The utility model discloses above -mentioned integrated design has solved the problem of low caisson rectification accuracy, equipment deployment complicated and poor guiding stability in prior art, and the closed -loop control system of rectification mechanism can realize quick response and accurate correction.

Description

Technical Field

[0001] This utility model relates to the field of building engineering technology, and in particular to a high-precision guiding and correction device for water pressure balanced caissons. Background Technology

[0002] As a basic structural form, caissons are used in bridge, wharf and deep-water structure projects. The key to construction quality lies in the precise control of verticality and horizontal position during the sinking process. However, due to complex and variable geological conditions, the friction between the caisson and the soil is uneven when the caisson sinks under its own weight or external forces, which can cause the caisson to tilt, deviate or twist, thus affecting the quality and safety of the project.

[0003] To control the sinking attitude of the caisson, existing technologies typically use guide frames for auxiliary guidance and passively correct the deviation by over-excavation and loading when tilting. However, these traditional guide frames have simple structures, mostly rely on sliding friction, have low guiding accuracy and poor stability, and the correction process mainly depends on the experience and judgment of the construction personnel. The operation is cumbersome and the response is slow. They lack real-time data monitoring and precise force control methods, making it difficult to meet the high precision requirements of modern engineering for caisson construction. The shortcomings of existing technologies are even more prominent in complex working conditions that require rapid and precise response.

[0004] Therefore, this utility model proposes a high-precision guiding and correction device for water pressure balanced caissons to overcome the shortcomings of existing technologies. Utility Model Content

[0005] In view of the problems of low correction and control accuracy, inconvenient equipment deployment, and poor sinking guidance stability of existing water pressure balance caisson construction auxiliary devices, this utility model aims to provide a high-precision guidance and correction device for water pressure balance caissons with an improved structure that can effectively solve the above problems.

[0006] This utility model provides a high-precision guiding and correction device for water pressure balanced caissons, including a positioning ring, a correction mechanism and a guiding mechanism; The correction mechanism includes an installation ring, a support frame, a connecting column, a fixed base, and a jack; the guide mechanism includes a guide groove and a fixed frame. Furthermore, the support frame is used to engage with the first limiting groove of the positioning ring to detachably fix the correction mechanism, the jack is used to lift the pre-embedded block set on the inner wall of the caisson, the fixing frame is used to install on the outer wall of the caisson, the guide wheel rotatably connected inside the fixing frame can roll in the guide groove, and at the same time the limiting block on the inner side of the guide groove slides in cooperation with the second limiting groove opened on the fixing frame.

[0007] Preferably, the outer side of the fixed base has a misalignment groove for offsetting the pre-embedded block during installation.

[0008] Preferably, the correction mechanism further includes a tilt sensor, which is used to detect the tilt data of the caisson to control the jack activation.

[0009] Preferably, the mounting ring is also provided with lifting lugs for hoisting by lifting equipment.

[0010] Preferably, the high-precision guiding and correction device for the water pressure balance caisson further includes guide piles and support columns, and the positioning ring is fixedly connected to the top of the support column.

[0011] Preferably, as a specific implementation, the high-precision guiding and correcting device for the water pressure balance caisson further includes a construction platform, and the guide pile is set at the bottom corner of the construction platform.

[0012] Preferably, the guide groove is fixedly disposed along the inner wall of the positioning ring.

[0013] Preferably, there are multiple jacks, which are distributed around the circumference of the fixed base.

[0014] This utility model has the following beneficial effects: 1. This utility model solves the problems of existing caisson correction technology, which relies on manual experience, has slow response, low accuracy and difficult installation and deployment, by setting up a correction mechanism that can be quickly disassembled and assembled, and using tilt sensors to monitor the caisson's attitude in real time, and then controlling the jacks to precisely lift the pre-embedded blocks on the inner wall of the caisson to form a closed-loop control. It can quickly respond to, accurately correct and automatically control the tilt of the caisson, thus improving construction efficiency and correction accuracy.

[0015] 2. This utility model solves the problem of poor guiding stability and low sinking accuracy caused by uneven force during the sinking of the caisson due to the uneven force of the existing guiding device causing shaking or derailment. It reduces sinking resistance and effectively prevents derailment through a dual limiting guiding effect, ensuring the stability and safety of the caisson sinking process. Attached Figure Description

[0016] Figure 1 A perspective view of the high-precision guiding and correction device for a water pressure balance caisson proposed in this utility model; Figure 2 This is a schematic diagram of the correction mechanism of the high-precision guide and correction device for water pressure balance caissons proposed in this utility model; Figure 3 A schematic diagram of the limiting groove of the high-precision guiding and correction device for water pressure balance caissons proposed in this utility model; Figure 4 This is a schematic diagram of the guiding mechanism of the high-precision guiding and correction device for water pressure balance caissons proposed in this utility model; Figure 5 This is a partial schematic diagram of the limiting block of the high-precision guiding and correction device for water pressure balance caissons proposed in this utility model.

[0017] Legend: 1. Construction platform; 2. Correction mechanism; 201. Installation ring; 202. Connecting column; 203. Fixed base; 204. Jack; 205. Misalignment groove; 206. Bearing frame; 207. Lifting lug; 208. Limiting groove one; 209. Tilt sensor; 3. Guiding mechanism; 301. Fixed frame; 302. Guide wheel; 303. Guide groove; 304. Limiting block; 305. Limiting groove two; 4. Guide pile; 5. Support column; 6. Positioning ring; 7. Caisson one; 8. Embedded block. Detailed Implementation

[0018] To make the objectives, technical solutions, and advantages of this utility model clearer, the technical solutions in the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without creative effort are within the protection scope of this utility model.

[0019] Example: Please refer to Figures 1 to 5 This utility model provides a high-precision guiding and correction device for a water pressure balanced caisson, including a positioning ring 6 and a correction mechanism 2 detachably installed on the positioning ring 6. It also includes a guiding mechanism 3 that cooperates with the caisson 7 to be constructed. The correction mechanism 2 is used to provide precise correction force when the caisson 7 tilts, and the guiding mechanism 3 is used to provide stable trajectory guidance during the sinking of the caisson 7. The high-precision guiding and correction device for a water pressure balanced caisson also includes a construction platform 1 and a guide pile 4 set at the bottom corner of the construction platform 1. It also includes a support column 5 connecting the construction platform 1 and the positioning ring 6. The guide pile 4 is driven vertically into the ground, and the support column 5 stably supports the positioning ring 6 at a predetermined height and position. The inner wall of the positioning ring 6 is fixedly provided with a guide groove 303, which provides a track for the movement of the guiding mechanism 3. A limit groove 208 is opened on the top of the positioning ring 6, which is used to lock with the correction mechanism 2, thereby quickly fixing the correction mechanism 2 in the working position when needed.

[0020] Please refer to Figure 2 , Figure 3 and Figure 5The correction mechanism 2 includes a mounting ring 201, a connecting column 202, a fixed base 203, a jack 204, a misalignment groove 205, a support frame 206, a lifting lug 207, and a tilt sensor 209. The mounting ring 201 is the annular main frame of the correction mechanism 2. The lifting lug 207 is located on the top of the mounting ring 201 for hoisting equipment to lift the entire structure. The support frame 206 extends fixedly from the outer periphery of the mounting ring 201. The shape and size of the support frame 206 are adapted to the limiting groove 208 on the top of the positioning ring 6. The upper end of the connecting column 202 is fixedly connected to the mounting ring 201, and the lower end of the connecting column 202 is fixedly connected to the fixed base 203, thereby connecting the mounting ring 201 and the fixed base 209. 3. The components are securely connected as a whole. The outer side of the fixed base 203 has a misalignment groove 205 for offsetting the pre-embedded blocks 8 on the inner wall of the caisson 7 during installation. Multiple jacks 204 are distributed around the circumference of the fixed base 203 on its top. An tilt sensor 209 monitors the tilt attitude of the caisson 7 in real time and feeds the data back to the control system to drive the jacks 204. This structure allows the correction mechanism 2 to be quickly hoisted when needed, and the support frame 206 is quickly locked into the limiting groove 208 by rotation. Subsequently, multiple jacks 204 apply precise jacking force to the pre-embedded blocks 8 on the inner wall of the caisson 7 to complete high-precision correction. Please refer to Figure 4 and Figure 5 The guiding mechanism 3 includes a fixed frame 301, a guide wheel 302, a limiting block 304, and a limiting groove 305. The fixed frame 301 is installed on the outer wall of the caisson 7. The guide wheel 302 is rotatably connected to the inner wall of the fixed frame 301 via a rotating shaft. The guide wheel 302 can roll on the inner wall of the guide groove 303, thereby replacing sliding friction with rolling friction and reducing the resistance when the caisson 7 sinks. The limiting block 304 is fixedly connected to the inner wall of the guide groove 303. Meanwhile... Limiting grooves 305 are correspondingly provided on the left and right side walls of the fixed frame 301. The outer wall of the limiting block 304 is slidably connected to the inner wall of the limiting groove 305. This sliding fit structure between the limiting block 304 and the limiting groove 305 can effectively prevent the fixed frame 301 and the guide wheel 302 from coming out of the guide groove 303 when subjected to lateral force, ensuring that the guide wheel 302 always runs within the predetermined track, thereby providing extremely high stability and safety for the sinking process of the caisson 7.

[0021] In a preferred embodiment, to ensure the overall stable installation of the device, multiple guide piles 4 are installed at the four corners of the bottom of the construction platform 1. The guide piles 4 are fixed to the ground foundation by means of flanges and anchor bolts, or directly driven into the soil to a sufficient depth. The construction platform 1 is rigidly connected to the positioning ring 6 by support columns 5. The support columns 5 can be steel pipe columns or lattice column structures, ensuring that the force transmission path from the construction platform 1 to the positioning ring 6 is stable and reliable. Multiple pre-embedded blocks 8 corresponding to the jacks 204 are pre-embedded on the inner wall of the caisson 7. The pre-embedded blocks 8 are preferably high-strength steel plates, providing a solid and wear-resistant force application point for the jacks 204.

[0022] Working principle: Before the caisson sinking construction, the guide piles 4 at the bottom of the construction platform 1 are first driven vertically into the ground to provide stable support and positioning for the entire device, preventing displacement of the device during the sinking of caisson 7. Then, the support column 5 and the positioning ring 6 are installed in place. At this time, the guide mechanism 3 is ready. When it is necessary to lower caisson 7, caisson 7 sinks down along the inner wall of the positioning ring 6. During this process, the fixing frame 301 installed on the outer wall of caisson 7 moves down with caisson 7. The guide wheel 302 rotatably connected inside the fixing frame 301 rolls smoothly in the guide groove 303 fixed to the inner wall of the positioning ring 6. At the same time, the limiting block 304 fixed inside the guide groove 303 slides in the inner wall of the limiting groove 305 opened in the fixing frame 301. This dual cooperation of rolling guidance and sliding limiting ensures that caisson 7 has a precise trajectory and runs smoothly throughout the sinking process, effectively preventing the risk of derailment and ensuring high stability during the lowering process. During the descent process, when the tilt sensor 209 detects that the caisson 7 has tilted, the correction process is initiated. First, the crane hook hooks onto the lifting lug 207, and the entire correction mechanism 2 is lifted to the top of the positioning ring 6 fixedly connected to the support column 5. It is then placed downwards along the inner wall of the positioning ring 6, which provides initial guidance. During the descent, the operator aligns the misalignment groove 205 on the outer side of the fixed base 203 fixedly connected to the bottom of the connecting column 202 with the embedded block 8 on the inner wall of the caisson 7. This ensures that the fixed base 203 can smoothly misalign all the embedded blocks 8 as it moves downwards, preventing accidental collisions and damage between the embedded blocks 8 and the fixed base 203. When the support frame 206 fixedly connected around the mounting ring 201 is about to fit against the top of the positioning ring 6, the mounting ring 201 is rotated, thereby driving the bottom fixed base... The base 203 and jack 204 rotate together until the support frame 206 aligns with the limiting groove 208 at the top of the positioning ring 6. At this point, the entire correction mechanism 2 is lowered completely by the crane. Under the action of gravity, the support frame 206 is precisely locked into the limiting groove 208, completing the rapid locking and deployment of the correction mechanism 2. Subsequently, based on the tilt data of the caisson 7 fed back by the tilt sensor 209, the control system precisely starts the jack 204 located in the opposite direction of the caisson tilt. The jack 204 adjusts its own lifting height to apply precise jacking force to the corresponding pre-embedded blocks 8 on the inner wall of the caisson 7, thereby changing the force balance state at different positions at the bottom of the caisson 7, thus correcting the tilted caisson 7 back to a vertical posture. After the correction is completed, the correction mechanism 2 is lifted off the ground again by the crane and transported to the storage area, waiting for the next call.

Claims

1. A high-precision guide and correction device for a water pressure balanced caisson, comprising a positioning ring (6), a correction mechanism (2) detachably mounted on the positioning ring (6), and a guide mechanism (3) that cooperates with the caisson (7). Its features are, The correction mechanism (2) includes an installation ring (201), a support frame (206) connected to the installation ring (201), a connecting column (202), a fixed base (203), and a jack (204). The support frame (206) is used to engage with the limiting groove (208) opened in the positioning ring (6). The jack (204) is used to lift the embedded block (8) set on the inner wall of the caisson (7). The guiding mechanism (3) includes a guide groove (303) and A fixing frame (301) is used to cooperate with the guide groove (303). The fixing frame (301) is used to install on the outer wall of the first caisson (7). A guide wheel (302) is rotatably connected inside the fixing frame (301). The guide wheel (302) can roll inside the guide groove (303). A limit block (304) is fixed inside the guide groove (303). The fixing frame (301) is provided with a second limit groove (305) for the limit block (304) to slide.

2. The high-precision guiding and correction device for a water pressure balanced caisson according to claim 1, characterized in that, The outer side of the fixed base (203) has a misalignment groove (205) for offsetting the embedded block (8) during installation.

3. The high-precision guiding and correction device for a water pressure balanced caisson according to claim 1, characterized in that, The correction mechanism (2) also includes a tilt sensor (209), which is used to detect the tilt data of the caisson (7) to control the jack (204) to start.

4. The high-precision guiding and correction device for a water pressure balanced caisson according to claim 1, characterized in that, The mounting ring (201) is also provided with lifting lugs (207) for hoisting equipment.

5. The high-precision guiding and correction device for a water pressure balanced caisson according to claim 1, characterized in that, It also includes guide piles (4) and support columns (5), the guide piles (4) being driven vertically into the ground to provide support, and the positioning rings (6) being fixedly connected to the top of the support columns (5).

6. The high-precision guiding and correction device for a water pressure balanced caisson according to claim 5, characterized in that, It also includes a construction platform (1), and the guide pile (4) is set at the bottom corner of the construction platform (1).

7. The high-precision guiding and correction device for a water pressure balanced caisson according to claim 1, characterized in that, The guide groove (303) is fixedly disposed along the inner wall of the positioning ring (6).

8. The high-precision guiding and correction device for a water pressure balanced caisson according to claim 1, characterized in that, There are multiple jacks (204), which are distributed around the circumference of the fixed base (203).

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