Bottom plate mounting system of flywheel energy storage equipment

Abstract

The invention provides a bottom plate mounting system of flywheel energy storage equipment, and the system comprises a connecting part which is arranged between adjacent pre-embedded bottom plates and is used for connecting and fixing at least two pre-embedded bottom plates, and the pre-embedded bottom plates are connected with a base of the flywheel energy storage equipment; the adjusting component is arranged between the reinforcement cage structure and the pre-buried bottom plate, the top end of the adjusting component acts on the bottom face of the pre-buried bottom plate and is used for supporting and adjusting the height and levelness of the pre-buried bottom plate, and the reinforcement cage structure is a reinforcement framework buried in pit concrete; the distance control parts are connected between the embedded bottom plates and used for keeping the relative distance between the embedded bottom plates; and the exhaust parts are arranged on the plate bodies of the embedded bottom plates and used for exhausting air during concrete pouring. According to the pre-embedded bottom plate positioning and fixing device, the positioning and fixing accuracy of the pre-embedded bottom plate in the concrete pouring process is improved.

Description

Technical Field

[0001] This application relates to the field of flywheel energy storage technology, and more specifically, to a base plate mounting system for a flywheel energy storage device. Background Technology

[0002] Currently, flywheel energy storage devices, being high-speed devices, are typically installed in pits to ensure operational safety. In this existing technology, such as... Figure 1 As shown, its installation structure mainly comprises the following components: a foundation reinforcement cage located at the bottom of the pit, the flywheel device body for final installation and fixation, and a foundation embedded plate serving as a key connection interface. This foundation embedded plate is pre-embedded within the concrete foundation, its upper surface is connected to the flywheel base via bolts, and its lower side is anchored to the foundation reinforcement cage.

[0003] The verticality of the flywheel equipment is crucial for its stable operation, which depends entirely on the levelness of the foundation embedded plate. Relevant specifications require an installation levelness of 0.3% (three per thousand). However, in actual construction, especially during the concrete pouring stage, the foundation embedded plate is highly susceptible to impact and buoyancy, causing displacement, tilting, or floating, making it difficult to guarantee that its final levelness meets the requirements. This necessitates frequent re-inspection of the foundation embedded plate's levelness before flywheel installation, and time-consuming and ineffective secondary leveling when requirements are not met. This process severely impacts project progress, and the structural safety and reliability after secondary leveling are usually lower than with a single, precise installation. This problem is particularly pronounced when the foundation embedded plate is designed as a multi-piece structure for installation purposes, making it even more difficult to coordinate and adjust the coplanarity and relative positions of multiple base plates, further exacerbating the installation difficulty and the risks associated with precision control. Summary of the Invention

[0004] In view of this, the purpose of this application is to provide a base plate mounting system for a flywheel energy storage device to overcome at least one of the above-mentioned defects.

[0005] In a first aspect, embodiments of this application provide a base plate installation system for a flywheel energy storage device. The system includes: a connecting component disposed between adjacent embedded base plates for connecting and fixing at least two embedded base plates, wherein the embedded base plates are connected to the base of the flywheel energy storage device; an adjusting component disposed between a reinforcing cage structure and the embedded base plates, wherein the top end of the adjusting component acts on the bottom surface of the embedded base plates for supporting and adjusting the height and level of the embedded base plates, wherein the reinforcing cage structure is a reinforcing steel skeleton embedded in the concrete pit; a spacing control component connected between each embedded base plate for maintaining the relative distance between the embedded base plates; and an exhaust component disposed on the plate body of each embedded base plate for venting air during concrete pouring.

[0006] In one optional embodiment of this application, the connecting component includes a connecting channel steel, wherein the connecting channel steel is provided with positioning holes, and the connecting channel steel is fixed to the ends of two adjacent embedded base plates by fasteners passing through the positioning holes, and the bottom of the connecting channel steel is in contact with the surface of the corresponding embedded base plate.

[0007] In one optional embodiment of this application, the adjusting component includes an adjusting screw, which is vertically welded to the main reinforcement bar of the reinforcing cage, and the top end of the adjusting screw abuts against the bottom surface of the embedded base plate.

[0008] In one optional embodiment of this application, the spacing control component includes a flexible connector, wherein both ends of the flexible connector are respectively connected to adjacent embedded base plates, and a length adjustment mechanism is provided in the middle.

[0009] In one alternative embodiment of this application, the exhaust component includes through holes penetrating the embedded base plate, and these through holes are evenly distributed in the non-connected areas of the embedded base plate.

[0010] In one alternative embodiment of this application, the installation position of the connecting channel steel is located on the connecting surface at the end of the embedded base plate.

[0011] In one alternative embodiment of this application, the adjusting screw is fixed to the main reinforcement bar of the reinforcing cage by welding, and the threaded adjusting section of the adjusting screw extends out of the upper surface of the reinforcing cage.

[0012] In one optional embodiment of this application, the flexible connector is a steel wire rope, wherein a turnbuckle installed in the middle of the steel wire rope connects its two sections, and the two ends of the steel wire rope are respectively fixed to connection points set on adjacent pre-embedded base plates.

[0013] In one optional embodiment of this application, the positioning hole on the connecting channel steel is an oblong hole.

[0014] In one optional embodiment of this application, a spherical pad is provided at the top of the adjusting screw, and the spherical pad is in contact with the bottom surface of the embedded base plate.

[0015] The flywheel energy storage device base plate installation system provided in this application includes: a connecting component disposed between adjacent embedded base plates for connecting and fixing at least two embedded base plates, wherein the embedded base plates are connected to the base of the flywheel energy storage device; an adjusting component disposed between a reinforcing cage structure and the embedded base plates, wherein the top end of the adjusting component acts on the bottom surface of the embedded base plates for supporting and adjusting the height and level of the embedded base plates, wherein the reinforcing cage structure is a reinforcing steel skeleton embedded in the pit concrete; a spacing control component connected between each embedded base plate for maintaining the relative distance between the embedded base plates; and an exhaust component disposed on the plate body of each embedded base plate for venting air during concrete pouring. This application improves the accuracy of positioning and fixing of the embedded base plates during concrete pouring.

[0016] To make the above-mentioned objectives, features and advantages of this application more apparent and understandable, preferred embodiments are described below in detail with reference to the accompanying drawings. Attached Figure Description

[0017] To more clearly illustrate the technical solutions of the embodiments of this application, the accompanying drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this application and should not be regarded as a limitation of the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0018] Figure 1 This is a schematic diagram of the base plate mounting system of a prior art flywheel energy storage device provided in an embodiment of this application; Figure 2 This is a schematic diagram of the base plate mounting system of the flywheel energy storage device provided in the embodiments of this application; Figure 3 This is a schematic diagram of the embedded base plate in the base plate mounting system of the flywheel energy storage device provided in the embodiments of this application; Figure 4 This is a schematic diagram of the steel cage in the base plate mounting system of the flywheel energy storage device provided in the embodiments of this application. Detailed Implementation

[0019] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. The components of the embodiments of this application described and shown in the accompanying drawings can generally be arranged and designed in various different configurations. Therefore, the following detailed description of the embodiments of this application provided in the accompanying drawings is not intended to limit the scope of the claimed application, but merely represents selected embodiments of this application. Based on the embodiments of this application, every other embodiment obtained by those skilled in the art without inventive effort falls within the scope of protection of this application.

[0020] First, the applicable application scenarios of this application will be introduced. This application can be applied to the field of flywheel energy storage technology.

[0021] Research has revealed that flywheel energy storage devices are generally installed in pits to ensure safe operation, with the device body connected to a base plate embedded in the pit foundation. The core challenge of this installation method lies in the fact that the extremely high operational precision required of flywheel devices necessitates a very high degree of levelness in the installation foundation, typically requiring a precision of 0.3%. However, in actual construction, especially during the concrete pouring stage, the embedded base plate is highly susceptible to displacement, tilting, and floating due to impacts, buoyancy, and other factors, making it difficult to meet the final levelness requirements.

[0022] This issue led to a secondary leveling operation. This required re-checking the levelness of the base plate before equipment installation and remedial leveling of any areas that did not meet the standards. This process not only significantly slowed down the project schedule, but the structural safety and reliability of remedial measures were generally lower than that of a precise installation in one go. Especially when the base plate was divided into multiple sections due to design requirements, coordinating and adjusting the coplanarity and relative positions of these sections became even more complex, further exacerbating the installation difficulty and the risks associated with precision control.

[0023] Furthermore, the flywheel embedded plate presents the following challenges during installation: 1) Extremely high precision requirements: The flywheel is a high-speed precision device, and the allowable error for the flatness, levelness, and elevation of the embedded plate is usually within a very small range of 3‰. Any tiny deviation will be amplified during high-speed operation, leading to increased unit vibration and noise, and even damage to the bearings.

[0024] 2) Precise positioning and fixing: The position of the embedded plate must be completely consistent with the drawings. Under the huge impact and buoyancy of the steel reinforcement binding and concrete pouring, it is necessary to ensure that the embedded plate does not shift, float or tilt, which places very stringent requirements on the rigidity and stability of the temporary support and fixing system.

[0025] 3) Complex collaborative work: The installation of embedded plates is located at the intersection of civil engineering (reinforcement binding) and equipment installation. Its installation process requires close cooperation with steelworkers, formwork workers, and other parties. The working space is often restricted, and it is easily interfered with and damaged by other processes.

[0026] 4) Concrete Pouring Control: Concrete pouring is the biggest risk point. During pouring, direct impact of concrete on the embedded plate must be avoided. Vibration operations must strictly prohibit contact with the embedded plate and its support system, otherwise it is very easy to cause displacement or deformation. At the same time, it is essential to ensure that the concrete at the bottom of the slab is densely filled to avoid hollow areas.

[0027] Based on this, the present application provides a base plate installation system for a flywheel energy storage device. Through a specially designed tooling structure and its synergistic effect, the system achieves one-time precise positioning and fixing of the pre-embedded base plate during the concrete pouring stage, avoiding displacement, tilting and floating during construction, thereby ensuring that the installation level of the base plate meets the precision requirements of the flywheel device and eliminating the need for secondary leveling operations.

[0028] Please see Figure 2 , Figure 2 This is a schematic diagram of the base plate mounting system for the flywheel energy storage device provided in an embodiment of this application. Figure 2 As shown in the figure, the base plate mounting system of the flywheel energy storage device provided in this application embodiment includes: a connecting component 1, an adjusting component 2, a spacing control component 3, and an exhaust component 4.

[0029] Connecting component 1 is disposed between adjacent embedded base plates and is used to connect and fix at least two embedded base plates. The embedded base plates are connected to the base of the flywheel energy storage device.

[0030] For example, the connecting component 1 includes a connecting channel steel, wherein the connecting channel steel is provided with positioning holes, and the connecting channel steel is fixed to the ends of two adjacent embedded base plates by fasteners passing through the positioning holes, and the bottom of the connecting channel steel is in contact with the surface of the corresponding embedded base plate.

[0031] Here, connecting component 1 is specifically a No. 12 connecting channel steel, which is installed across the ends of two adjacent embedded base plates. The bottom of the channel steel is ground flat to ensure full fit with the surface of the embedded base plate, and it is securely connected to the embedded base plate using fasteners (such as bolts) through positioning holes machined on its body.

[0032] The main function of connecting component 1 is to connect the originally independent multiple embedded base plates at the top into a more rigid overall frame. This effectively ensures that the two (or more) base plates can always remain on the same height plane during installation and concrete pouring, that is, maintain the coplanarity of the base plates, and fundamentally prevent uneven settlement or tilting of a single base plate.

[0033] Adjustment component 2 is set between the steel cage structure and the embedded base plate. The top of adjustment component 2 acts on the bottom surface of the embedded base plate to support and adjust the height and level of the embedded base plate. The steel cage structure is a steel skeleton embedded in the pit concrete.

[0034] For example, the adjusting component 2 includes an adjusting screw, which is vertically welded to the main reinforcement bar of the steel cage, and the top end of the adjusting screw is supported on the bottom surface of the embedded base plate.

[0035] Adjustment component 2 is specifically an adjustment screw, which is vertically welded and fixed to the main reinforcement of the steel cage at the bottom of the pit. The top of the screw extends upward and directly supports the bottom surface of the embedded base plate.

[0036] By turning the adjusting screw, the height of its top can be finely adjusted, thereby precisely regulating the height of each support point of the embedded base plate. This is the core method for achieving initial high-precision leveling of the base plate (meeting the 3‰ levelness requirement), ensuring the accuracy of the flywheel installation foundation.

[0037] Spacing control component 3 is connected between each embedded base plate to maintain the relative distance between the embedded base plates.

[0038] For example, the spacing control component 3 includes a flexible connector, wherein the two ends of the flexible connector are respectively connected to the adjacent embedded base plate, and a length adjustment mechanism is provided in the middle.

[0039] For example, a tension wire (such as a wire rope with turnbuckles) has its two ends connected to adjacent embedded base plates, usually at specific connection points on the side of the base plate.

[0040] By adjusting the turnbuckle in the middle of the wire rope, the length and tension of the wire rope can be precisely controlled, thereby tightening or loosening the two embedded base plates and ensuring that the center distance between them conforms to the dimensions in the design drawings. This prevents relative displacement of the base plates under the lateral pressure of the concrete.

[0041] Exhaust component 4 is installed on the plate of each embedded base plate to exhaust air during concrete pouring.

[0042] For example, the exhaust component 4 includes through holes penetrating the embedded base plate body, and these through holes are evenly distributed in the non-connected areas of the embedded base plate.

[0043] The exhaust component 4 is specifically a vent hole, which is a through hole that is directly processed through the pre-embedded base plate and is evenly distributed in non-connected areas such as the middle of the base plate.

[0044] During concrete pouring, air trapped beneath the embedded base slab can be easily expelled through these vents. This prevents air from accumulating and creating voids beneath the base slab, ensuring the compactness of the concrete filling at the bottom of the base slab. Consequently, the base slab is subjected to uniform stress and will not deform or settle due to the bottom being suspended.

[0045] This application, through the synergistic effect of the aforementioned four components, constrains and ensures the embedded base plate in four key dimensions—levelness (adjustment component 2), coplanarity (connection component 1), spacing (spacing control component 3), and bottom compaction (venting component 4)—before and during concrete pouring. This allows the base plate to maintain its preset precise state in complex construction environments, ultimately achieving the high-precision requirement of flywheel installation in a single pour. It avoids time-consuming, labor-intensive, and safety-hazardous secondary leveling operations, improving installation efficiency and project reliability.

[0046] Please see Figure 3 , Figure 3 This is a schematic diagram of the embedded base plate in the base plate mounting system of the flywheel energy storage device provided in the embodiments of this application.

[0047] like Figure 3 As shown, Figure 3 The image shows a single piece of steel plate. The plate has pre-machined screw holes (or mounting slots) for subsequent connection to the flywheel generator base; its bottom is welded with reinforcing bars to form a strong anchorage with the foundation's reinforcing cage during concrete pouring.

[0048] The embedded base plate is made of a single piece of steel plate with pre-machined bolt holes for connecting the flywheel base and welded anchor bars at the bottom. This component is precisely embedded in the concrete foundation, reliably connected to the flywheel equipment at the top and effectively anchored to the steel cage at the bottom, forming a core force transmission path that connects the upper and lower parts. Its function is to evenly transfer the static and dynamic loads generated by the flywheel operation to the foundation, and to ensure the installation level and centering accuracy of the flywheel main unit through its own precise leveling.

[0049] Specifically, this manifests as follows: Precise positioning and anchoring: As the connection interface between the flywheel unit and the concrete foundation, precise pre-embedding provides an accurate installation position and a firm anchoring point for the flywheel base.

[0050] Load transfer: safely and evenly transfer the huge static load (equipment weight) and dynamic load (vibration and torque caused by high-speed rotation) generated by the flywheel during operation to the concrete foundation.

[0051] Ensuring alignment and levelness: The precisely leveled embedded base plate ensures the horizontal and vertical installation of the flywheel main unit, which is crucial for the stable operation of the high-speed rotor and can avoid unnecessary vibration and wear.

[0052] Easy to install: Bolt holes or mounting slots are usually pre-machined on it, which facilitates the subsequent hoisting and fixing of the flywheel unit, improving installation efficiency and accuracy.

[0053] In short, the embedded base plate of the flywheel is the structural foundation that ensures the safe, stable, and long-term high-speed operation of the flywheel.

[0054] Furthermore, the connecting channel steel is installed on the connecting surface at the end of the embedded base plate.

[0055] This means that the connecting channel steel is mated and fixed to the part of the embedded base plate itself specifically designed for connection (i.e., the "connecting surface"). This limitation ensures the effective transmission of connection force, allowing the connecting channel steel to perform its core function of "connecting and fixing" the two base plates. By structurally connecting the segmented base plates into a whole, the overall rigidity and stability of the base plates are enhanced, effectively resisting the lateral forces and uneven stresses generated during concrete pouring.

[0056] Furthermore, the adjusting screw is fixed to the main reinforcement bar of the steel cage by welding, and the threaded adjusting section of the adjusting screw extends out of the upper surface of the steel cage.

[0057] Welding provides a secure connection, ensuring that the adjusting screw will not loosen or shift under the enormous impact of concrete pouring. The extended adjustment section provides space for operation, allowing construction workers to easily rotate the screw at any time before and during concrete pouring, thereby enabling real-time, fine-tuning of the base plate height and level.

[0058] Please see Figure 4 , Figure 4 This is a schematic diagram of the steel cage in the base plate mounting system of the flywheel energy storage device provided in the embodiments of this application.

[0059] like Figure 4 As shown, Figure 4 The foundation is a three-dimensional skeletal structure made of steel bars tied or welded together. It is mainly composed of main reinforcing bars (the main load-bearing bars) and stirrups (used to fix the position of the main reinforcing bars and bear part of the shear stress), forming a sturdy "square iron cage". This steel cage is placed at the bottom of the pit, and then concrete is poured. Its core purpose is to greatly enhance the load-bearing capacity and integrity of the concrete foundation.

[0060] Reinforcing cages are used to reinforce the cement layer at the bottom of the pit to ensure strength. They are made of steel bars of different diameters tied together to form square iron cages, which are then placed at the bottom of the foundation.

[0061] The foundation reinforcement cage is a three-dimensional skeleton made of main bars, stirrups, etc., which is tied or welded together. Its core function is to greatly enhance the load-bearing capacity and integrity of the concrete foundation.

[0062] Specifically, this manifests as follows: Bearing tensile stress: Concrete has high compressive strength but low tensile strength. Reinforcing cages utilize the excellent tensile properties of steel to withstand tensile stresses caused by bending moment, shrinkage, temperature changes, etc., preventing foundation cracking.

[0063] Improve overall stiffness: Connect concrete components into a whole, work together, effectively distribute loads, reduce uneven settlement, and resist shear and torsional forces caused by earthquakes, etc.

[0064] Anchoring and connection: Provide reliable anchoring points for the columns, walls and other components above it to ensure the continuity and stability of the structural force transmission path.

[0065] In short, steel cages transform fragile and easily cracked concrete foundations into strong and durable load-bearing components, which is key to ensuring the safety and stability of buildings.

[0066] Furthermore, the flexible connector is a steel wire rope, wherein a turnbuckle installed in the middle of the steel wire rope connects its two sections, and the two ends of the steel wire rope are respectively fixed to the connection points set on the adjacent pre-embedded base plates.

[0067] Steel wire ropes are characterized by high tensile strength, light weight, and good flexibility, making them suitable for tying. Turnbuckles, as precise length adjustment mechanisms, allow construction workers to easily and accurately tighten or loosen the steel wire rope by rotating it, thereby controlling the center distance between two embedded base plates, preventing relative displacement during pouring, and ensuring that the installation dimensions meet design requirements.

[0068] Furthermore, the positioning holes on the connecting channel steel are oblong holes.

[0069] Here, when fasteners (such as bolts) are used to connect to the embedded base plate through this elongated hole, the connection point is movable within a certain range before final tightening.

[0070] During installation, the positioning holes allow for slight positional adjustments of the connecting channel steel relative to the embedded base plate, which can compensate for minor dimensional errors or centering deviations during the initial construction, resulting in a higher installation tolerance and more flexible and convenient assembly of the entire tooling system.

[0071] Preferably, a spherical pad is provided at the top of the adjusting screw, and the spherical pad is in contact with the bottom surface of the embedded base plate.

[0072] The point contact between the spherical pad and the tip of the screw automatically adapts to unevenness on the bottom surface of the embedded base plate. This ensures that the supporting force applied to the base plate by the adjusting screw is always vertically upward, avoiding lateral forces caused by unevenness and preventing accidental movement of the base plate during fine-tuning. This ensures the accuracy and stability of the leveling adjustment.

[0073] The flywheel energy storage device base plate installation system provided in this application solves the engineering technical problem in the prior art where the embedded base plate is prone to displacement, tilting, floating, and loss of coplanarity and spacing control during the concrete pouring stage, resulting in substandard installation accuracy and the need for secondary leveling. This is achieved through the synergistic effect of a special tooling system consisting of connecting components, adjusting components, spacing control components, and venting components. The system enables precise, reliable, and one-time control of the levelness, coplanarity, spacing, and bottom concrete density of the embedded base plate, effectively eliminating the need for secondary leveling operations and significantly improving installation efficiency and the structural safety and reliability of the engineering foundation. Addressing the technical challenge of significantly increasing the difficulty of adjusting the levelness and coplanarity of multiple embedded flywheel base plates due to installation requirements, which easily leads to secondary leveling operations, this invention provides a dedicated tooling system and matching installation process. This enables the one-time precise positioning, leveling, and fixing of multiple embedded base plates during the concrete pouring stage, effectively avoiding subsequent secondary leveling procedures, significantly improving installation accuracy and project efficiency, and greatly saving installation time and costs.

[0074] In the several embodiments provided in this application, it should be understood that the disclosed systems, apparatuses, and methods can be implemented in other ways. The apparatus embodiments described above are merely illustrative. For example, the division of units is only a logical functional division, and there may be other division methods in actual implementation. For example, multiple units or components may be combined or integrated into another system, or some features may be ignored or not executed.

[0075] Finally, it should be noted that the above-described embodiments are merely specific implementations of this application, used to illustrate the technical solutions of this application, and not to limit them. The scope of protection of this application is not limited thereto. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that any person skilled in the art can still modify or easily conceive of changes to the technical solutions described in the foregoing embodiments, or make equivalent substitutions for some of the technical features, within the scope of the technology disclosed in this application. Such modifications, changes, or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this application, and should all be covered within the scope of protection of this application. Therefore, the scope of protection of this application should be determined by the scope of the claims.

Claims

1. A base plate mounting system for a flywheel energy storage device, characterized in that, include: A connecting component is disposed between adjacent embedded base plates for connecting and fixing at least two embedded base plates, wherein the embedded base plates are connected to the base of the flywheel energy storage device; An adjustment component is installed between the steel cage structure and the embedded base plate. The top of the adjustment component acts on the bottom surface of the embedded base plate to support and adjust the height and level of the embedded base plate. The steel cage structure is a steel skeleton embedded in the pit concrete. Spacing control components are connected between each embedded base plate to maintain the relative distance between the embedded base plates; The exhaust system is installed on the body of each embedded base plate to exhaust air during concrete pouring.

2. The system according to claim 1, characterized in that, The connecting component includes a connecting channel steel. The connecting channel steel is provided with positioning holes. The connecting channel steel is fixed to the ends of two adjacent embedded base plates by fasteners passing through the positioning holes. The bottom of the connecting channel steel is in contact with the surface of the corresponding embedded base plate.

3. The system according to claim 1, characterized in that, The adjusting component includes an adjusting screw. The adjusting screw is vertically welded to the main reinforcement bar of the steel cage, and the top end of the adjusting screw is supported on the bottom surface of the embedded base plate.

4. The system according to claim 1, characterized in that, The spacing control component includes a flexible connector. The flexible connector is connected to the adjacent embedded base plate at both ends, and a length adjustment mechanism is provided in the middle.

5. The system according to claim 1, characterized in that, The exhaust component includes through holes penetrating the embedded base plate, and these through holes are evenly distributed in the non-connected areas of the embedded base plate.

6. The system according to claim 2, characterized in that, The connecting channel steel is installed on the connecting surface at the end of the embedded base plate.

7. The system according to claim 3, characterized in that, The adjusting screw is fixed to the main reinforcement bar of the steel cage by welding, and the threaded adjusting section of the adjusting screw extends out of the upper surface of the steel cage.

8. The system according to claim 4, characterized in that, The flexible connector is a steel wire rope. The steel wire rope has a turnbuckle installed in the middle to connect its two sections, and the two ends of the steel wire rope are respectively fixed to the connection points set on the adjacent pre-embedded base plates.

9. The system according to claim 2, characterized in that, The positioning holes on the connecting channel steel are oblong holes.

10. The system according to claim 3, characterized in that, The top of the adjusting screw is provided with a spherical pad, which contacts the bottom surface of the embedded base plate.

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