Steel hoop construction device with wide range of applications

Abstract

This invention provides a widely applicable self-locking steel clamp construction device, comprising two opposing support units. Each support unit has a top plate and a bottom plate at its top and bottom, respectively. Each support unit includes two opposing straight plates, with two locking plates symmetrically arranged on each side of the straight plates. The straight plates, straight plates, and locking plates cooperate to form a first or second support configuration. A locking plate is connected to the upper side of the two opposing support units via a flat connecting plate. A semi-ring clamp is connected to the inner side of the bottom plate via a limiting plate. The two opposing semi-ring clamps and locking plates are detachably abutted against the outer wall of the pier column. This invention features an ingenious design; the support units adopt a modular and intensive design, allowing for flexible adjustments according to different application scenarios and needs, ensuring ease of use and improving construction safety and efficiency.

Description

Technical Field

[0001] This invention relates to the field of building construction technology, and in particular to a self-locking steel clamp construction device with a wide range of applications. Background Technology

[0002] The current construction of steel clamps for bridge pier cap beams requires workers to manually install the steel clamps at the top of the pier. Existing construction methods and platforms have low reliability, poor economy, high safety risks, and the installation and dismantling process is cumbersome and time-consuming. At the same time, the installation of the support platform is limited by many site conditions such as the gap between the bridge piers and the bottom foundation.

[0003] The existing steel clamp construction platform is mainly constructed in the following ways: 1) Using scaffolding to provide the installation platform for the steel clamp. If the pier or pipe pile is too high, there are safety hazards for workers climbing up and down. The foundation has requirements for installation. If necessary, the foundation must be hardened and drained first. Installation and dismantling consume manpower, material resources and time. 2) Using a ladder truck as a liftable operating platform. However, the arrangement and deployment of the vehicle requires a certain amount of space. In areas with dense piers or when the piers are high, there are situations where it cannot be deployed or the height is insufficient. At the same time, when using a ladder truck as an operating platform, only one side (180°) of the pier can be taken care of. When working on the other side, the vehicle needs to be moved and re-deployed. There are high requirements for the deployment site conditions. The mobile ladder truck has high usage and maintenance costs, a small operating range and requires multiple moves and adjustments. 3) Using a safety ladder cage. The main steps of the operation are that the prefabricated safety ladder cage is installed by hoisting around the pier. It is equipped with stairs and walkways around the perimeter, which can be used for construction personnel to walk and move up and down. Because it is a prefabricated product, the price is relatively high, and the installation requires specific foundation conditions, including ground hardening, which increases the cost.

[0004] It should also be noted that while land-based operations are relatively feasible due to the support foundation on the ground, the installation of clamps on water-based piers is extremely difficult. For example, scaffolding, aerial work platforms, and safety ladders are completely unavailable, leading to complex construction and delays in the construction period.

[0005] Chinese patent document CN 221740977 U describes an anti-overturning device for reinforced single-column piers based on steel truss cap beams. This device is relatively troublesome to install and has a large size. Chinese patent document CN 117780066 A describes a self-locking steel clamp structure for construction platforms and its usage method. However, this structure is inconvenient to disassemble and its application is limited, so it needs to be improved. Summary of the Invention

[0006] This invention provides a self-locking steel clamp construction device with a wide range of applications, which solves the technical problems of safety risks in the clamp installation process, inconvenience in use due to the large number of components in the overall device, low integration, and troublesome use.

[0007] To solve the above-mentioned technical problems, the technical solution adopted by the present invention is: a widely applicable self-locking steel clamp construction device, comprising two support units arranged opposite to each other, with a top plate and a bottom plate respectively provided at the top and bottom of the two support units. Each support unit includes two straight plates arranged opposite to each other, with two locking plates symmetrically provided on both sides of the straight plates. The straight plates, the straight plates and the locking plates cooperate to form a first support configuration or a second support configuration. The upper side of the two opposite support units is connected to a locking plate through a flat connecting plate, and the inner side of the bottom plate is connected to a semi-ring clamp through a limiting plate. The two opposite semi-ring clamps and the locking plates are detachably abutted against the outer wall of the pier column.

[0008] In the preferred embodiment, a connecting sleeve is provided on one side of the straight plate, and a semi-circular hole is provided through the end of the connecting sleeve. Two opposite connecting sleeves are hinged by a connecting shaft. Multiple third locking holes are provided through the locking plate. The upper and lower sides of the locking plate are connected to the top plate and the bottom plate respectively. Two vertically opposite locking plates are fixed by a fixing plate, and bolts are inserted into the fixing plate and the third locking holes. The straight plate also has a sixth and seventh locking hole vertically through it. The two opposite straight plates are connected by a timing plate and bolts. The bolts are inserted into the timing plate and the seventh locking hole. The third insertion rod is inserted into the sixth locking hole of the two straight plates. The third insertion rod is connected to the two straight plates by a nut.

[0009] In the preferred embodiment, two adjacent semi-annular holes are connected to form an encircling circular hole, the connecting shaft is inserted into the encircling circular hole, and auxiliary rods are provided on both sides of the connecting shaft. A step is provided on one side of the locking plate, and a first locking hole is provided through the step. Two locking plates on the same side are connected by auxiliary rods, and the auxiliary rods are inserted into the first locking hole. The two locking plates located on both sides of the straight plate are hinged to the straight plate through auxiliary rods to form the first support configuration.

[0010] In the preferred embodiment, an eighth locking hole is provided through the middle of the connecting sleeve, the connecting shaft passes through the eighth locking hole of the two connecting sleeves, and a fourth locking hole and a fifth locking hole are also provided through the straight plate. The locking pin is inserted into the first locking hole and the fourth locking hole, a second locking hole is provided on one side of the first locking hole, and the fourth insert is inserted into the second locking hole and the fifth locking hole. Two locking plates located on opposite sides of the same straight plate are connected by a connecting shaft and a connecting sleeve to form a second support configuration.

[0011] In the preferred embodiment, the semi-ring clamp is connected to the follower unit and the limiting plate. One side of the follower unit is electrically connected to the mobile power supply. A locking unit is provided on one side of the follower unit. The locking units on the two base plates are connected by a pull rope. The locking unit includes a worm gear and a worm wheel that are meshed together, and a leveling roller. A locking sleeve is provided on the lower side of the worm wheel. The leveling roller is fixed on the opposite base plate. A locking rod is provided on one side of the locking sleeve. The two sides of the pull rope are fixed on the locking sleeve and the locking rod respectively. The pull rope is wound around the leveling roller. The length of the pull rope can be adjusted by rotating the locking sleeve.

[0012] In a preferred embodiment, the follower unit includes a fixed frame, with a motor and a drive sleeve respectively provided on the upper and lower sides of the fixed frame. The output shaft of the motor is provided with a drive gear, and the end of the drive sleeve is provided with a driven gear. The drive gear and the driven gear mesh with each other. A follower rod is internally threaded into the drive sleeve. The follower rod passes through the limiting plate, and the end of the follower rod is hinged to the semi-ring clamp. The center of the limiting plate is provided with an alignment hole, the outer center of the semi-ring clamp is provided with a hinge seat, the end of the follower rod is provided with a fourth through hole, the bolt is inserted in the fixing frame and the fourth through hole, and the bolt is fixed by the hinge seat of the flat connecting plate. The follower rod is equipped with a second retaining ring, and a spring is also sleeved on the outside of the follower rod. The two sides of the spring abut against the inner sides of the second retaining ring and the limiting plate, respectively.

[0013] In the preferred embodiment, oblong holes are provided through both sides of the alignment hole, and straight extension rods are provided on both sides of the hinge seat. An adjustment plate is sleeved on the straight extension rod and passes through the oblong hole. The adjusting plate has a fifth through hole and a limiting rod on each side. The straight rod passes through the fifth through hole. The adjusting plate is connected to the straight rod by a nut. The outer side of the fixed frame also has a side plate and a diagonal brace. The third through hole passes through the side plate and the diagonal brace. The upper side of the fixed frame has a second through hole. The output shaft of the fixed frame passes through the second through hole. The drive sleeve has a first retaining ring on the side opposite to the driven gear. The first retaining ring abuts against the inner side of the fixed frame. The follower rod has a first threaded part on one side. The first threaded part and the drive sleeve thread have the same direction of rotation.

[0014] In a preferred embodiment, the locking plate includes a first arc-shaped clamping plate, with ear plates on both sides of the first arc-shaped clamping plate. A friction pad is provided on the inner side of the ear plate and is attached to the outer wall of the pier column. A boss is provided on the outer side of the ear plate, with at least two cylinders arranged in parallel on the boss. Bolts are inserted through the two opposite ear plates, and the two ear plates are connected by bolts and nuts. The cylinders are inserted through the flat connecting plate and are fixed by at least two nuts and the flat connecting plate. The two nuts are located on both sides of the flat connecting plate.

[0015] In the preferred embodiment, the worm gear is rotatably mounted on the bearing plate, the bottom of the bearing plate is provided with a first mounting plate, the worm wheel and the locking sleeve are connected by a flat key and a rotating shaft respectively, and the rotating shaft is rotatably mounted on the first mounting plate; The bearing plates on both sides are respectively provided with a second threaded hole and a sixth through hole. The second insert rod passes through the second threaded hole and the sixth through hole. The second insert rod has a second threaded part on one side. The threads of the second threaded part and the second threaded hole have the same direction. The worm has square holes on both sides. The turntable is connected to a square platform through the base plate on one side. The square platform and the square hole are inserted into each other. A sleeve is provided in the middle of the first mounting plate. A top ring and a seventh through hole are provided at the top and bottom of the sleeve, respectively. A first threaded hole is provided on one side of the sleeve. The locking rod is located in the first threaded hole. The rotating shaft is inserted into the top ring and the sleeve. A positioning seat is connected to the bottom of the rotating shaft.

[0016] In the preferred embodiment, two slots are provided parallel to each other on the outer side of the rotating shaft, the flat key is located in the slots, and a bearing and a washer are also provided in the seventh through hole. The top of the bearing abuts against the bottom of the top ring, the bearing is sleeved on the outer side of the rotating shaft, and the washer includes a support ring. Multiple balls are provided on the upper part of the support ring, and the balls abut against the lower part of the bearing. The outer side of the lock sleeve is provided with a spiral groove, and the lock sleeve is also threaded with a fastening pin. One side of the pull rope is fixed to the fastening pin, and the other side of the pull rope is fixed to the locking rod. The inner side of the positioning seat is provided with a first annular groove and a second annular groove. A conical rod is provided in the middle of the first annular groove. A conical hole is provided at the bottom of the rotating shaft. A third threaded part is provided on the outer side of the conical hole. The positioning seat and the rotating shaft are threadedly connected. The conical rod fits against the inner wall of the conical hole. A third threaded part is provided on the inner side of the first annular groove. A locking groove is provided at the bottom of the positioning seat. The support ring fits against the second annular groove. The bottom of the leveling roller is provided with a second mounting plate, which is fixedly connected to the base plate. The top and bottom of the leveling roller are respectively provided with cover plates. The cover plates are provided with multiple slots along the circumference. Anti-detachment rods are provided in the slots. The top of the anti-detachment rods is connected to the cover plates by nuts. The two sides of the pull rope are attached to the side walls of the leveling roller and the anti-detachment rods.

[0017] The beneficial effects of the present invention are as follows: by installing a top plate and a bottom plate at the top and bottom of two support units that are arranged opposite to each other, and by using a locking plate and a semi-circular clamp to hold the pier column tightly, the pier column is locked by friction. The two top plates at the top are connected to form a top working platform, and the bottom plate serves as a temporary foothold for the operator, which facilitates the construction of an operating platform and the pouring of formwork above the pier column. The support unit adopts a modular design, which can be quickly assembled into the first support configuration or the second support configuration according to the needs of the scenario and use. That is, the same components can realize the conversion between multiple configurations, which has low manufacturing cost, is more convenient to use, and has strong overall versatility and stable structure. The additional follow-up unit can also handle situations where the external dimensions of the pier column change to a certain extent, while the locking unit can ensure the overall locking efficiency. It adopts a hard connection by actively aligning the motor and then manually locking it, thereby avoiding situations where the failure of circuit components would lead to safety risks to the entire device. This device is easy to install and dismantle, simple to operate, and has good economic benefits. Attached Figure Description

[0018] The present invention will be further described below with reference to the accompanying drawings and embodiments: Figure 1 This is a schematic diagram of the first structural embodiment of the present invention. Figure 1 ; Figure 2 yes Figure 1 A top-down view; Figure 3 yes Figure 1 A frontal view diagram; Figure 4 yes Figure 1 A left-view diagram; Figure 5 This is a schematic diagram of the first structural embodiment of the present invention. Figure 2 ; Figure 6 This is a schematic diagram of the first structural embodiment of the present invention. Figure 3 ; Figure 7 This is a schematic diagram of the first structural embodiment of the present invention. Figure 4 ; Figure 8 yes Figure 7 A schematic diagram of the exploded structure; Figure 9 This is a schematic diagram of the second structural design of the present invention. Figure 1 ; Figure 10 yes Figure 9 A top-down view; Figure 11 yes Figure 9 A frontal view diagram; Figure 12 yes Figure 9 A left-view diagram; Figure 13 This is a schematic diagram of the second structural design of the present invention. Figure 2 ; Figure 14 This is a schematic diagram of the second structural design of the present invention. Figure 3 ; Figure 15 yes Figure 15 A schematic diagram of the exploded structure; Figure 16 This is a schematic diagram of the base plate mounting follower unit and locking unit structure of the present invention; Figure 17 yes Figure 16 A partial structural diagram; Figure 18 yes Figure 17 Explosion structure diagram Figure 1 ; Figure 19 yes Figure 17 Explosion structure diagram Figure 2 ; Figure 20 yes Figure 16 A schematic diagram of the locking unit structure; Figure 21 yes Figure 20 Explosion structure diagram Figure 1 ; Figure 22 yes Figure 20 Explosion structure diagram Figure 2 ; Figure 23 yes Figure 20 Schematic diagram of the shaft mounting worm gear and locking sleeve structure Figure 1 ; Figure 24 yes Figure 20 Schematic diagram of the shaft mounting worm gear and locking sleeve structure Figure 2 ; Figure 25 This is a schematic diagram of the first support configuration structure of the present invention; Figure 26 yes Figure 25 Explosion structure diagram Figure 1 ; Figure 27 yes Figure 25 Explosion structure diagram Figure 2 ; Figure 28 This is a schematic diagram of the second support configuration of the present invention. Figure 1 ; Figure 29 yes Figure 28 Explosion structure diagram Figure 1 ; Figure 30 yes Figure 28 Explosion structure diagram Figure 2 ; Figure 31 This is a schematic diagram of the second support configuration of the present invention. Figure 2 ; Figure 32 yes Figure 31 A schematic diagram of the explosion structure.

[0019] In the diagram: Base plate 1; Limiting plate 2; Alignment hole 201; Oval hole 202; Semi-ring clamp 3; Hinge seat 301; Straight rod 302; Support unit 4; Straight plate 401; Connecting sleeve 402; Locking plate 403; Semi-ring hole 404; Step 405; First locking hole 406; Second locking hole 407; Connecting shaft 408; Auxiliary rod 409; Third locking hole 410; Fourth locking hole 411; Fifth locking hole 412; Sixth locking hole 413; Seventh locking hole 414; Third insert rod 415; Synchronizing plate 416; Eighth locking hole 417; Locking pin 418; Fourth insert rod 419 ; 420 circumferential hole; 5 top plate; 6 flat connecting plate; 7 locking plate; 701 first arc clamping plate; 702 ear plate; 703 boss; 704 cylinder; 705 friction pad; 8 pier; 9 follower unit; 901 fixed frame; 902 motor; 903 drive sleeve; 904 driving gear; 905 driven gear; 906 first retaining ring; 907 second through hole; 908 third through hole; 909 follower rod; 910 fourth through hole; 911 second retaining ring; 912 first threaded part; 913 spring; 914 side plate; 915 diagonal brace plate; 10 locking unit; 10 worm gear 01; Shaft 1002; Worm Gear 1003; Locking Sleeve 1004; Fastening Screw 1005; Spiral Groove 1006; Flat Key 1007; Slot 1008; First Threaded Hole 1009; Locking Rod 1010; Sleeve 1011; Top Ring 1012; Second Threaded Hole 1013; Sixth Through Hole 1014; Second Insert Rod 1015; Second Threaded Part 1016; Square Hole 1017; Turntable 1018; Base Plate 1019; Square Platform 1020; Third Threaded Part 1021; Conical Hole 1022; Seventh Through Hole 1023; First Mounting Plate 1024; Bearing Carrier plate 1025; Second mounting plate 1026; Wire leveling roller 1027; Cover plate 1028; Slot 1029; Anti-detachment rod 1030; Power supply 11; Fixing plate 12; First support configuration 13; Second support configuration 14; Adjusting plate 15; Fifth through hole 1501; Limiting rod 1502; Nut 16; Bearing 17; Washer 18; Support ring 1801; Ball bearing 1802; Positioning seat 19; First annular groove 1901; Second annular groove 1902; Conical rod 1903; Third threaded part 1904; Locking groove 1905; Pull rope 20; Bolt 21. Detailed Implementation

[0020] like Figure 1-15In 25-32, a widely applicable self-locking steel clamp construction device includes two opposing support units 4. The top and bottom of the two support units 4 are respectively provided with a top plate 5 and a bottom plate 1. The support unit 4 includes two opposing straight plates 401. Two locking plates 403 are symmetrically provided on both sides of the straight plates 401. The straight plates 401, the straight plates 401 and the locking plates 403 cooperate to form a first support configuration 13 or a second support configuration 14. The upper side of the two opposing support units 4 is connected to a locking plate 7 through a flat connecting plate 6. The inner side of the bottom plate 1 is connected to a semi-ring clamp 3 through a limiting plate 2. The two opposing semi-ring clamps 3 and the locking plate 7 are detachably abutted against the outer wall of the pier column 8.

[0021] When in use, this device is first symmetrically fixed to the two top plates 5 and the two bottom plates 1 using lifting tools and ropes. That is, the state of the support unit 4 can be changed by the lifting ropes. Initially, the support unit 4 is in an unlocked state. The support unit 4 has a hinge structure inside, which can change its opening state by the lifting ropes. After the pier column 8 is constructed, the entire device is installed from the top or side of the pier column 8 using lifting tools and ropes. Then, the workers tighten the self-locking clamps a second time to ensure that the entire device is firmly installed on the pier column 8.

[0022] The two straight plates 401 and the four locking plates 403 cooperate to form an adjustable first support configuration 13 (that is, the shape is "X" so that the distance between 1 and 5 can be adjusted in height, which is suitable for use on land piers 8, especially suitable for installation scenarios of relatively high piers 8) or a fixed second support configuration 14. The second support configuration 14 is suitable for use on land piers 8 with relatively low height, especially suitable for installation scenarios of water piers 8. Since the purpose of this solution is to serve as a temporary support platform to provide temporary footholds for operators, it is convenient to install the formwork during the construction of the cap beam, thereby ensuring the pouring of the cap beam. When the cap beam at the top of the pier 8 is completed, the top of the pier 8 is completely closed. At this time, the entire device needs to be removed from the pier 8. When working on the water, the working conditions are limited and there is no stable and safe foothold. Therefore, the second support configuration 14 can be used to complete the disassembly and departure relatively conveniently.

[0023] In other words, regardless of whether the first support configuration 13 or the second support configuration 14 is used as the main component of the support unit 4, the overall use is flexible and the range of applications is wide. After the construction is completed, the entire device can be hoisted to the ground and then the pull rope 20 can be opened or the support unit 4 on either side can be disassembled to complete the separation from the pier 8, ensuring the efficiency of subsequent work.

[0024] The top plate 5 serves as the construction platform at the top, while the bottom plate 1 serves as a temporary standing base for workers. In addition, vertical poles are installed near the edge of the bottom plate 1. The vertical poles and the bottom plate 1 are designed to be detachable, and protective nets are installed between adjacent vertical poles to further ensure the safety of construction workers.

[0025] In the preferred embodiment, a connecting sleeve 402 is provided on one side of the straight plate 401, and a semi-annular hole 404 is provided through the end of the connecting sleeve 402. Two opposite connecting sleeves 402 are hinged by a connecting shaft 408. Multiple third locking holes 410 are provided through the locking plate 403. The upper and lower sides of the locking plate 403 are connected to the top plate 5 and the bottom plate 1 respectively. Two vertically opposite locking plates 403 are fixed by a fixing plate 12. Bolts 21 are inserted into the fixing plate 12 and the third locking holes 410. The straight plate 401 is also vertically provided with a sixth locking hole 413 and a seventh locking hole 414. The two opposite straight plates 401 are connected by a synchronous plate 416 and a bolt 21. The bolt 21 is inserted into the synchronous plate 416 and the seventh locking hole 414. The third insert rod 415 is inserted into the sixth locking hole 413 of the two straight plates 401. The third insert rod 415 is connected to the two straight plates 401 by a nut 16.

[0026] The ends of the locking plate 403 are fixed to the top plate 5 and the bottom plate 1 respectively by bolts 21, which facilitates quick installation and removal later. Preferably, the thickness of the straight plate 401 is half the outer diameter of the connecting sleeve 402. When the two connecting sleeves 402 are hinged, the two straight plates 401 can be completely fitted and stored, which occupies less space and is stable under force.

[0027] The connecting sleeve 402 can be connected in two directions according to the use. When the first support configuration 13 is adopted, the two straight plates 401 need to be fixed on the same plane first. At this time, the two straight plates 401 can be locked by the synchronous plate 416. After the two straight plates 401 are completely fixed, they can serve as the middle support foundation. When the second support configuration 14 is used, two straight plates 401 are connected by a connecting shaft 408. At this time, the two straight plates 401 are hinged and can rotate along the axis of the connecting shaft 408. The two connecting sleeves 402 of the second support configuration 14 on one side are initially in a hinged and fixed state, while the two connecting sleeves 402 of the second support configuration 14 on the other side are in a relatively disengaged state. After being fully installed on the pier from one side of the pier 8, the two connecting sleeves 402 are brought close to the design position, and the connecting shaft 408 is inserted into the two connecting sleeves 402 to complete the locking. The connecting shaft 408 plays multiple roles of support and limit locking.

[0028] like Figure 25-27In the preferred embodiment, two adjacent semi-annular holes 404 are connected to form an encircling circular hole 420. A connecting shaft 408 is inserted into the encircling circular hole 420. Auxiliary rods 409 are provided on both sides of the connecting shaft 408. A step 405 is provided on one side of the locking plate 403. A first locking hole 406 is provided through the step 405. Two locking plates 403 on the same side are connected by auxiliary rods 409, and the auxiliary rods 409 are inserted into the first locking hole 406. Two locking plates 403 located on both sides of the straight plate 401 are hinged to the straight plate 401 via auxiliary rods 409 to form the first support configuration 13.

[0029] When the first support configuration 13 is adopted, the height between the bottom plate 1 and the top plate 5 can be adjusted as needed, that is, the relative distance between the two opposite locking plates 7 and the semi-ring clamping plate 3 can be changed (at this time, the included angle between the multiple locking plates 403 and the pier 8 can be adjusted as needed), so that the whole device can be lowered from the top of the pier 8 to the designed position of the pier 8 to complete the overall installation. When the height of the pier 8 is high, the first support configuration 13 can completely wrap the pier 8, making the overall installation more convenient, the construction efficiency higher, and ensuring the safety and stability of the construction.

[0030] like Figures 28-30 In the preferred embodiment, the connecting sleeve 402 has an eighth locking hole 417 through the middle, the connecting shaft 408 passes through the eighth locking hole 417 of the two connecting sleeves 402, the straight plate 401 also has a fourth locking hole 411 and a fifth locking hole 412 through it, the locking pin 418 is inserted into the first locking hole 406 and the fourth locking hole 411, the first locking hole 406 has a second locking hole 407 on one side, and the fourth insert rod 419 is inserted into the second locking hole 407 and the fifth locking hole 412; Two locking plates 403 located on opposite sides of the same straight plate 401 are hinged together by a connecting shaft 408 and connected by a connecting sleeve 402 to form a second support configuration 14.

[0031] like Figures 31-32 In addition, two straight plates 401 can be set at different heights to ensure that they can be adjusted in the height direction and that there is sufficient space between the top plate 5 and the bottom plate 1 to facilitate operation by staff.

[0032] When the first support configuration 13 is used, the relative angle between the two bottom plates 1 on both sides can be changed as needed, which also changes the relative distance between the two locking plates 7 and the semi-ring clamp 3. This makes it easier to wrap the pier 8 at a relatively low position and then lock it after adjusting it to the designed position of the pier 8. When facing the scenario of water-based operations, the pier 8 is located in the water, and the water surface cannot provide a stable foothold, making operation inconvenient. However, the second support configuration 14 can be installed and disassembled relatively easily, ensuring the safety and stability of construction.

[0033] In the preferred embodiment, the semi-ring clamp 3 is connected to the limiting plate 2 via the follower unit 9, one side of the follower unit 9 is electrically connected to the mobile power supply 11, and one side of the follower unit 9 is provided with a locking unit 10. The locking units 10 on the two base plates 1 are connected by a pull rope 20. The locking unit 10 includes a worm gear 1001 and a worm wheel 1003 and a leveling roller 1027 that are meshed together. A locking sleeve 1004 is provided on the lower side of the worm wheel 1003. The leveling roller 1027 is fixed on the opposite base plate 1. A locking rod 1010 is provided on one side of the locking sleeve 1004. The two sides of the pull rope 20 are fixed on the locking sleeve 1004 and the locking rod 1010 respectively. The pull rope 20 is wound around the leveling roller 1027. The length of the pull rope 20 can be adjusted by rotating the locking sleeve 1004.

[0034] The preferred power bank 11 is a portable outdoor power supply, which can ensure stable power supply. At the same time, it does not require external connection to the power box on land via cable. For water operations, it greatly reduces the safety risks of power use and avoids the trouble of cable installation, effectively controlling risk points.

[0035] During the construction of pier 8, it is difficult to guarantee that it is completely coaxial from top to bottom and that the outline projection of the outer wall is absolutely consistent at the bottom. In actual construction, there are often some fluctuations within the allowable tolerance range. However, by using the follow-up unit 9 for positioning, the above problems can be overcome. The base plate 1 and the semi-ring clamp 3 can be adjusted within a certain angle range, that is, the semi-ring clamp 3 maintains full contact with the pier 8. At this time, there may be some horizontal fluctuations in the base plates 1 on both sides. Then, the locking unit 10 tightly pulls and fixes the two opposing base plates 1 with ropes until the semi-ring clamp 3 is stably fixed to the pier 8 by friction. Since the worm gear 1001 and worm wheel 1003 have a self-locking ability, that is, when the worm gear 1001 and worm wheel 1003 are adjusted, the pier 8 can be locked in place. After the length of the pull rope 20 is reached, during installation, the two base plates 1 move closer together under their own weight. To improve the overall automation level, a servo motor (capable of bearing the required torque) is preferably installed on one side of the worm gear 1001 to transmit torque to the worm gear 1001. If necessary, the servo motor and the worm gear 1001 are connected through a reducer, which enhances the overall self-locking safety. After the entire device is hoisted onto the pier 8, under the action of gravity, part of the semi-ring clamp 3 contacts the pier 8. At this time, the servo motor is manually controlled to work, thereby pulling the two base plates 1 together and adjusting them to the designed position through the pull rope 20. Then, the person moves the basket close to the device and fixes it again. After the fixation is completed, even if the servo motor is not working, the whole device still has a certain degree of safety.

[0036] like Figure 16-19In the preferred embodiment, the follower unit 9 includes a fixed frame 901. The upper and lower sides of the fixed frame 901 are respectively provided with a motor 902 and a drive sleeve 903. The output shaft of the motor 902 is provided with a drive gear 904, and the end of the drive sleeve 903 is provided with a driven gear 905. The drive gear 904 and the driven gear 905 mesh. The drive sleeve 903 is internally threaded with a follower rod 909. The follower rod 909 passes through the limiting plate 2, and the end of the follower rod 909 is hinged to the semi-ring clamp 3.

[0037] The motor 902 can drive the drive sleeve 903 to rotate. As the upper locking plate 7 gradually approaches the pier 8, the motor 902 can drive the support unit 4 and the base plate 1 to move closer, thereby changing their own position. After the semi-ring clamp 3 is close to the pier 8, the base plate 1 and the semi-ring clamp 3 can form a certain tilt angle, thus adapting to the installation of locking plates 7 and semi-ring clamp 3 of different heights onto the pier 8.

[0038] In the preferred embodiment, the center of the limiting plate 2 is provided with an alignment hole 201, the outer center of the semi-ring clamp 3 is provided with a hinge seat 301, the end of the follower rod 909 is provided with a fourth through hole 910, the bolt 21 is inserted into the fixing frame 901 and the fourth through hole 910, and the bolt 21 is fixed by the six hinge seats 301 of the flat connecting plate. The follower rod 909 is provided with a second retaining ring 911, and a spring 913 is also sleeved on the outside of the follower rod 909. The two sides of the spring 913 abut against the inner side of the second retaining ring 911 and the limiting plate 2, respectively.

[0039] Since spring 913 can further eliminate the gap in the thread, after the semi-ring clamp 3 is attached to the pier 8, the rotation direction of motor 902 is changed to bring the support unit 4 and the base plate 1 close to the semi-ring clamp 3 for initial locking. Then the locking unit 10 locks it a second time, and finally locks it manually. Multiple locking steps ensure that the installation with the pier 8 is firm, which facilitates safe and stable construction by the staff.

[0040] In the preferred embodiment, oblong holes 202 are provided through both sides of the alignment hole 201, and straight extension rods 302 are provided on both sides of the hinge seat 301. An adjustment plate 15 is sleeved on the straight extension rod 302 and passes through the oblong hole 202. The adjusting plate 15 has a fifth through hole 1501 and a limiting rod 1502 on both sides. The straight rod 302 passes through the fifth through hole 1501. The adjusting plate 15 is connected to the straight rod 302 by a nut 16. The outer side of the fixing frame 901 is also provided with a side plate 914 and a diagonal brace 915. The third through hole 908 passes through the side plate 914 and the diagonal brace 915. The upper side of the fixing frame 901 is provided with a second through hole 907. The output shaft of the fixing frame 901 passes through the second through hole 907. The drive sleeve 903 is provided with a first retaining ring 906 on the side opposite to the driven gear 905. The first retaining ring 906 abuts against the inner side of the fixing frame 901. The follower rod 909 is provided with a first threaded part 912 on one side. The first threaded part 912 and the drive sleeve 903 have the same thread direction.

[0041] The adjusting plate 15, in conjunction with the oval hole 202, facilitates the formation of a certain angle between the semi-circular clamping plate 3 and the limiting plate 2, thereby ensuring convenient installation and adapting to the construction conditions of the pier column 8. The side plate 914 and the diagonal bracing plate 915 provide a supporting foundation for the drive sleeve 903, ensuring that the drive sleeve 903 rotates with the motor 902, thereby converting the circular motion into linear motion and changing the distance between the limiting plate 2 and the semi-circular clamping plate 3, which facilitates the quick installation and disassembly of the device after construction is completed.

[0042] When using this device, especially for installation on land-based piers 8, a lifting tool and rope are used to hoist it from the top of the pier 8. At this time, the support unit 4 is installed in the form of a first support component 13 and a fixing plate 12. The two first straight plates 1301 of the first support component 13 cooperate with the first shaft 1302 to form an "X" structure. By changing the angle between the two first straight plates 1301, the size of the opening between the respective top plates 5, locking plates 7 and semi-ring clamps 3 can be changed, which facilitates entry from the top onto the pier 8 and locking at the designed position. After construction is completed, since the top cap beam is already blocking the top of the pier 8, the device cannot be removed from the top. The entire device is then removed and lowered to the ground. At this time, it is manually disassembled, removed from the pier 8 and stored for subsequent reuse. When installing the pier 8 on the water, hoisting equipment and ropes are used to lift the pier 8 from the side. It is necessary to disconnect the pull rope 20 and the locking rod 1010. At this time, the support unit 4 is fixed using the second support plate 14. The two second straight plates 1401 of the second support component 14 are used, with the bottom plate 1 on the same side fixed to the top plate 5 via the second straight plate 1401. Simultaneously, the two opposite bottom plates 1 are hinged on either side by the two second straight plates 1401 via the second shaft 1402. Multiple lifting points are set on the top plate 5 and the bottom plate 1. By changing the length of the lifting ropes, the semi-circular clamps 3 on the two bottom plates 1 are opened and brought closer to the pier 8 until they are fully close. At this point, the lengths of the lifting ropes on the top plate 5 and the bottom plate 1 are kept equal. Then, the state of the follow-up unit 9 is adjusted further. The semi-ring clamp 3 is attached to the pier 8. Then, the lifting equipment hoists the workers to one side of the device through the basket. The pull rope 20 and the locking rod 1010 are locked again. Then the locking unit 10 continues to work to complete the approach between the two base plates 1 and lock them. Finally, the locking plate 7 is fixed with bolts 21 and nuts 16. When the construction is completed, the device cannot be removed from the top because the top cap beam is already blocking the top of the pier 8. At this time, the connection between the device and the pier 8 is disconnected again. Then the pull rope 20 is removed from the locking rod 1010. By adjusting the length of the lifting equipment and the lifting rope, the device is removed from the side of the pier 8. The operation is convenient and safe. The workload is minimal. It avoids the problems of external wind force affecting water operations and the cumbersome disassembly and low construction efficiency.

[0043] like Figure 8 In the preferred embodiment, the locking plate 7 includes a first arc-shaped clamping plate 701. Ear plates 702 are provided on both sides of the first arc-shaped clamping plate 701. A friction pad 705 is provided on the inner side of the ear plate 702, and the friction pad 705 is attached to the outer wall of the pier column 8. A boss 703 is provided on the outer side of the ear plate 702. At least two cylinders 704 are arranged parallel to each other on the boss 703. Bolts 21 pass through the two opposing ear plates 702, and the two ear plates 702 are connected by bolts 21 and nuts 16. The cylinders 704 pass through the flat connecting plate 6 and are fixed by at least two nuts 16 and the flat connecting plate 6. The two nuts 16 are located on both sides of the flat connecting plate 6.

[0044] The locking plate 7 adopts a modular design and can be replaced and adjusted according to the needs of different piers 8. At the same time, the semi-ring clamp 3 can also be replaced according to the size and specifications of the locking plate 7 to meet the needs of various construction scenarios. The locking plate 7 and the flat connecting plate 6 are firmly fixed and the overall force is fully stable.

[0045] like Figure 20-24In the preferred embodiment, the worm gear 1001 is rotatably mounted on the support plate 1025, and the bottom of the support plate 1025 is provided with a first mounting plate 1024. The worm wheel 1003 and the locking sleeve 1004 are respectively connected by a flat key 1007 and a rotating shaft 1002, and the rotating shaft 1002 is rotatably mounted on the first mounting plate 1024. The bearing plates 1025 on both sides are respectively provided with a second threaded hole 1013 and a sixth through hole 1014. The second insert rod 1015 passes through the second threaded hole 1013 and the sixth through hole 1014. The second insert rod 1015 is provided with a second threaded part 1016 on one side. The second threaded part 1016 and the second threaded hole 1013 have the same thread direction. The worm gear 1001 is provided with square holes 1017 on both sides. The turntable 1018 is connected to a square platform 1020 through a base plate 1019 on one side. The square platform 1020 and the square hole 1017 are inserted into each other. A sleeve 1011 is provided in the middle of the first mounting plate 1024. A top ring 1012 and a seventh through hole 1023 are provided at the top and bottom of the sleeve 1011, respectively. A first threaded hole 1009 is provided on one side of the sleeve 1011. A locking rod 1010 is located in the first threaded hole 1009. A rotating shaft 1002 is inserted into the top ring 1012 and the sleeve 1011. A positioning seat 19 is connected to the bottom of the rotating shaft 1002.

[0046] The worm gear 1003 and worm 1001 of the locking unit 10 are self-locking. At the same time, the rotating shaft 1002 is installed in the sleeve 1011 through the positioning seat 19. The overall rotation accuracy is high and the lateral load-bearing capacity is stable. When the manual operation mode is adopted, the rotation direction of the turntable 1018 is changed and the worm 1001 is rotated. After rotating to the design position, the second insert rod 1015 locks the turntable 1018 again. The turntable 1018 is locked in the circumferential direction at this time, and the second insert rod 1015 can cope with the tilt problem and will not fall off the bearing plate 1025. The locking effect is good.

[0047] In a preferred embodiment, two slots 1008 are provided parallel to each other on the outer side of the rotating shaft 1002. The flat key 1007 is located in the slots 1008. The seventh through hole 1023 is also provided with a bearing 17 and a washer 18. The top of the bearing 17 abuts against the bottom of the top ring 1012. The bearing 17 is sleeved on the outer side of the rotating shaft 1002. The washer 18 includes a support ring 1801. The upper part of the support ring 1801 is provided with a plurality of balls 1802. The balls 1802 abut against the lower part of the bearing 17. The outer side of the lock sleeve 1004 is provided with a spiral groove 1006, and a fastening nail 1005 is also threaded onto the lock sleeve 1004. One side of the pull rope 20 is fixed to the fastening nail 1005, and the other side of the pull rope 20 is fixed to the locking rod 1010. The positioning seat 19 has a first annular groove 1901 and a second annular groove 1902 on its inner side. A conical rod 1903 is provided in the middle of the first annular groove 1901. A conical hole 1022 is provided at the bottom of the rotating shaft 1002. A third threaded part 1021 is provided on the outer side of the conical hole 1022. The positioning seat 19 and the rotating shaft 1002 are threaded together. The conical rod 1903 fits against the inner wall of the conical hole 1022. A third threaded part 1904 is provided on the inner side of the first annular groove 1901. A locking groove 1905 is provided at the bottom of the positioning seat 19. A support ring 1801 fits against the second annular groove 1902. The bottom of the leveling roller 1027 is provided with a second mounting plate 1026, which is fixedly connected to the base plate 1. The top and bottom of the leveling roller 1027 are respectively provided with cover plates 1028. The cover plates 1028 are provided with multiple slots 1029 along the circumference. The slots 1029 are provided with anti-detachment rods 1030. The top of the anti-detachment rods 1030 is connected to the cover plates 1028 by nuts 16. The pull ropes 20 are attached to the side walls of the leveling roller 1027 and the anti-detachment rods 1030 on both sides.

[0048] By changing the rotation direction of the worm gear 1001, the rotation direction of the worm wheel 1003 is changed, thereby driving the rotating shaft 1002 and the locking sleeve 1004 to rotate. At this time, the locking sleeve 1004 and the worm wheel 1003 rotate synchronously. One side of the pull rope 20 is fixed to the fastening nail 1005, so it can completely follow the locking sleeve 1004 to take in or let out the line. During the rotation of the rotating shaft 1002, the bearing 17 is reliably fixed to the rotating shaft 1002 because it is interference-fitted with the rotating shaft 1002. Due to wear and reduced precision in the manufacturing and use of the locking sleeve 1011 and the seventh through hole 1023, the ball bearing 1802 on the washer 18 corrects the bearing 17 from the bottom, ensuring that the outer ring of the bearing 17 fits against the inner side of the sleeve 1011, that is, the bottom of the top ring 1012. Then, the positioning seat 19 and the rotating shaft 1002 are fixed. The system employs threaded connections and applies thread-locking adhesive to ensure the positioning seat 19 and the rotating shaft 1002 are securely fixed. The second annular groove 1902, located in the middle of the positioning seat 19, supports the washer 18, ensuring reliable coaxiality throughout the installation. High coaxiality results in good performance. Furthermore, the conical rod 1903 aligns perfectly with the conical hole 1022 of the rotating shaft 1002, ensuring good overall alignment accuracy. The conical surface also provides a locking effect. After installation, the system exhibits high rigidity and good performance, guaranteeing perpendicularity with the first mounting plate 1024 and thus ensuring high meshing accuracy with the worm gear 1001, preventing tooth slippage. Simultaneously, the evenly spaced roller 1027, positioned on a corresponding base plate 1, securely pulls the rope 20 through the cooperation of the cover plate 1028 and the anti-slip rod 1030. The evenly spaced roller 1027 also acts as a movable pulley, ensuring better overall driving performance and faster response speed.

[0049] The above embodiments are merely preferred technical solutions of the present invention and should not be considered as limitations on the present invention. The scope of protection of the present invention should be limited to the technical solutions described in the claims, including equivalent substitutions of the technical features described in the claims. That is, equivalent substitutions and improvements within this scope are also within the scope of protection of the present invention.

Claims

1. A wide range of self-locking steel hoop construction device, characterized in that: It includes two support units (4) arranged opposite to each other. The top and bottom of the two support units (4) are respectively provided with a top plate (5) and a bottom plate (1). The support unit (4) includes two straight plates (401) arranged opposite to each other. Two locking plates (403) are symmetrically provided on both sides of the straight plate (401). The straight plate (401), the straight plate (401) and the locking plate (403) cooperate to form a first support configuration (13) or a second support configuration (14). The upper side of the two opposing support units (4) is connected to a locking plate (7) through a flat connecting plate (6). The inner side of the bottom plate (1) is connected to a semi-ring clamp (3) through a limiting plate (2). The two opposing semi-ring clamps (3) and the locking plate (7) are detachably abutted against the outer wall of the pier (8).

2. The self-locking steel hoop construction device with wide application scope according to claim 1, characterized in that: A connecting sleeve (402) is provided on one side of the straight plate (401). A semi-circular hole (404) is provided through the end of the connecting sleeve (402). Two opposite connecting sleeves (402) are hinged by a connecting shaft (408). Multiple third locking holes (410) are provided through the locking plate (403). The upper and lower sides of the locking plate (403) are connected to the top plate (5) and the bottom plate (1) respectively. Two vertically opposite locking plates (403) are fixed by a fixing plate (12). Bolts (21) are inserted into the fixing plate (12) and the third locking holes (410). The straight plate (401) is also vertically provided with a sixth locking hole (413) and a seventh locking hole (414). The two opposite straight plates (401) are connected by a timing plate (416) and a bolt (21). The bolt (21) is inserted into the timing plate (416) and the seventh locking hole (414). The third insertion rod (415) is inserted into the sixth locking hole (413) of the two straight plates (401). The third insertion rod (415) is connected to the two straight plates (401) by a nut (16).

3. The self-locking steel hoop construction device with wide application scope according to claim 2, characterized in that: Two adjacent semi-annular holes (404) are connected to form an encircling circular hole (420). A connecting shaft (408) is inserted into the encircling circular hole (420). Auxiliary rods (409) are provided on both sides of the connecting shaft (408). A step (405) is provided on one side of the locking plate (403). A first locking hole (406) is provided through the step (405). Two locking plates (403) on the same side are connected by auxiliary rods (409). The auxiliary rods (409) are inserted into the first locking hole (406). Two locking plates (403) located on both sides of the straight plate (401) are hinged to the straight plate (401) via an auxiliary rod (409) to form the first support configuration (13).

4. The self-locking steel hoop construction device with wide application scope according to claim 2, characterized in that: The connecting sleeve (402) has an eighth locking hole (417) through the middle. The connecting shaft (408) passes through the eighth locking hole (417) of the two connecting sleeves (402). The straight plate (401) also has a fourth locking hole (411) and a fifth locking hole (412) through it. The locking pin (418) is inserted into the first locking hole (406) and the fourth locking hole (411). The first locking hole (406) has a second locking hole (407) on one side. The fourth insert rod (419) is inserted into the second locking hole (407) and the fifth locking hole (412). Two locking plates (403) located on the same straight plate (401) are hinged together by a connecting shaft (408) and connected by a connecting sleeve (402) to form a second support configuration (14).

5. The self-locking steel hoop construction device with wide range of applications according to claim 1, characterized in that: The semi-ring clamp (3) is connected to the follower unit (9) and the limit plate (2) through the follower unit (9). One side of the follower unit (9) is electrically connected to the mobile power supply (11). A locking unit (10) is provided on one side of the follower unit (9). The locking units (10) on the two base plates (1) are connected by a pull rope (20). The locking unit (10) includes a worm gear (1001) and a worm wheel (1003) and a duct roller (1027) that are meshed together. A locking sleeve (1004) is provided on the lower side of the worm wheel (1003). The duct roller (1027) is fixed on the opposite base plate (1). A locking rod (1010) is provided on one side of the locking sleeve (1004). The two sides of the pull rope (20) are fixed on the locking sleeve (1004) and the locking rod (1010) respectively. The pull rope (20) is wound around the duct roller (1027). The length of the pull rope (20) is adjusted by rotating the locking sleeve (1004).

6. The widely applicable self-locking steel clamp construction device according to claim 5, characterized in that: The follower unit (9) includes a fixed frame (901), with a motor (902) and a drive sleeve (903) respectively on the upper and lower sides of the fixed frame (901). The output shaft of the motor (902) is provided with a drive gear (904), and the end of the drive sleeve (903) is provided with a driven gear (905). The drive gear (904) and the driven gear (905) mesh. The drive sleeve (903) is internally threaded with a follower rod (909), which passes through the limiting plate (2). The end of the follower rod (909) is hinged to the semi-ring clamp (3). The middle part of the limiting plate (2) is provided with a alignment hole (201), the middle part of the outer side of the semi-ring clamp (3) is provided with a hinge seat (301), the end of the follower rod (909) is provided with a fourth through hole (910), the bolt (21) is inserted in the fixing frame (901) and the fourth through hole (910), and the bolt (21) is fixed by the hinge seats (301) of the flat connecting plate (6); The follower rod (909) is provided with a second retaining ring (911), and a spring (913) is also sleeved on the outside of the follower rod (909). The two sides of the spring (913) abut against the inner side of the second retaining ring (911) and the limiting plate (2), respectively.

7. The widely applicable self-locking steel clamp construction device according to claim 6, characterized in that: The alignment hole (201) is provided with an oblong hole (202) through both sides. The hinge seat (301) is provided with a straight rod (302) on both sides. An adjusting plate (15) is sleeved on the straight rod (302) and the adjusting plate (15) passes through the oblong hole (202). The adjusting plate (15) has a fifth through hole (1501) and a limiting rod (1502) on both sides respectively. The straight rod (302) passes through the fifth through hole (1501). The adjusting plate (15) is connected to the straight rod (302) by a nut (16). The fixing frame (901) also has a side plate (914) and a diagonal brace (915) on the outside. The third through hole (908) passes through the side plate (914) and the diagonal brace (915). The fixing frame ( The upper side of 901 is provided with a second through hole (907), the output shaft of the fixed frame (901) passes through the second through hole (907), the drive sleeve (903) is provided with a first retaining ring (906) on the side opposite to the driven gear (905), the first retaining ring (906) abuts against the inner side of the fixed frame (901), the follower rod (909) is provided with a first threaded part (912), the first threaded part (912) and the drive sleeve (903) have the same thread direction.

8. The widely applicable self-locking steel clamp construction device according to claim 1, characterized in that: The locking plate (7) includes a first arc clamping plate (701), and ear plates (702) are provided on both sides of the first arc clamping plate (701). A friction pad (705) is provided on the inner side of the ear plate (702). The friction pad (705) is attached to the outer wall of the pier (8). A boss (703) is provided on the outer side of the ear plate (702). At least two cylinders (704) are arranged in parallel on the boss (703). Bolts (21) are passed through the two opposite ear plates (702). The two ear plates (702) are connected by bolts (21) and nuts (16). The cylinders (704) are passed through the flat connecting plate (6). The cylinders (704) are fixed to the flat connecting plate (6) by at least two nuts (16). The two nuts (16) are located on both sides of the flat connecting plate (6).

9. The widely applicable self-locking steel clamp construction device according to claim 5, characterized in that: The worm gear (1001) is rotatably mounted on the support plate (1025), and the bottom of the support plate (1025) is provided with a first mounting plate (1024). The worm wheel (1003) and the locking sleeve (1004) are connected by a flat key (1007) and a rotating shaft (1002) respectively. The rotating shaft (1002) is rotatably mounted on the first mounting plate (1024). The bearing plates (1025) on both sides are respectively provided with a second threaded hole (1013) and a sixth through hole (1014). The second insert rod (1015) is inserted into the second threaded hole (1013) and the sixth through hole (1014). The second insert rod (1015) is provided with a second threaded part (1016) on one side. The second threaded part (1016) and the second threaded hole (1013) have the same thread direction. The worm (1001) is provided with square holes (1017) on both sides. The turntable (1018) is connected to a square platform (1020) on one side through a base plate (1019). The square platform (1020) and the square hole (1017) are inserted into each other. The first mounting plate (1024) has a sleeve (1011) in the middle. The top and bottom of the sleeve (1011) are respectively provided with a top ring (1012) and a seventh through hole (1023). The sleeve (1011) has a first threaded hole (1009) on one side. The locking rod (1010) is located in the first threaded hole (1009). The rotating shaft (1002) is inserted in the top ring (1012) and the sleeve (1011). The bottom of the rotating shaft (1002) is connected to a positioning seat (19).

10. The widely applicable self-locking steel clamp construction device according to claim 9, characterized in that: Two slots (1008) are provided parallel to each other on the outer side of the rotating shaft (1002). The flat key (1007) is located in the slot (1008). The seventh through hole (1023) is also provided with a bearing (17) and a washer (18). The top of the bearing (17) abuts against the bottom of the top ring (1012). The bearing (17) is sleeved on the outer side of the rotating shaft (1002). The washer (18) includes a support ring (1801). Multiple balls (1802) are provided on the upper part of the support ring (1801). The balls (1802) abut against the lower part of the bearing (17). The outer side of the lock sleeve (1004) is provided with a spiral groove (1006), and a fastening nail (1005) is also threaded onto the lock sleeve (1004). One side of the pull rope (20) is fixed to the fastening nail (1005), and the other side of the pull rope (20) is fixed to the locking rod (1010). The positioning seat (19) has a first annular groove (1901) and a second annular groove (1902) on its inner side. A conical rod (1903) is provided in the middle of the first annular groove (1901). A conical hole (1022) is provided at the bottom of the rotating shaft (1002). A third threaded part (1021) is provided on the outer side of the conical hole (1022). The positioning seat (19) and the rotating shaft (1002) are threaded together. The conical rod (1903) fits against the inner wall of the conical hole (1022). A third threaded part (1904) is provided on the inner side of the first annular groove (1901). A locking groove (1905) is provided at the bottom of the positioning seat (19). A support ring (1801) fits against the second annular groove (1902). The bottom of the leveling roller (1027) is provided with a second mounting plate (1026), which is fixedly connected to the bottom plate (1). The top and bottom of the leveling roller (1027) are respectively provided with cover plates (1028). The cover plates (1028) are provided with multiple slots (1029) along the circumference. The slots (1029) are provided with anti-detachment rods (1030). The top of the anti-detachment rods (1030) is connected to the cover plates (1028) by nuts (16). The pull ropes (20) are attached to the side walls of the leveling roller (1027) and the anti-detachment rods (1030) on both sides.

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