Flywheel energy storage rotor hoist

Abstract

The utility model belongs to the related technical field of flywheel energy storage, and disclose a kind of flywheel energy storage rotor hoisting tool, the hoisting tool includes main lifting eye, cross brace, connecting rod component, lifting eye screw and horizontal measurement unit etc., wherein connecting rod component is vertically set respectively on the four arm supports of cross brace, and they can independently lengthen or shorten in height direction;Lifting eye screw is used to be screwed into the flywheel energy storage rotor to be hoisted, then be connected with the lower end of connecting rod component, whereby jointly implement the hoisting load of flywheel energy storage rotor.By the utility model, not only can successfully realize the online, real-time and high-precision levelness adjustment of flywheel energy storage rotor in the whole hoisting process, but also can provide real-time detection, fast locking, reduce partial load and other functions in hoisting hover state, so it is especially suitable for the specific assembly requirements of large-power flywheel energy storage rotor, such as large weight and large size, small gap, no collision, high coaxiality.

Description

Technical Field

[0001] This utility model belongs to the field of flywheel energy storage technology, and more specifically, relates to a flywheel energy storage rotor hoisting tool. Background Technology

[0002] In recent years, flywheel energy storage motors have rapidly developed towards higher power and higher energy density, with continuous increases in single-unit energy storage capacity. This has directly led to flywheel energy storage rotors exhibiting characteristics such as significantly increased single-unit weight, larger size, and higher moment of inertia. Unlike traditional mechanical flywheels used in internal combustion engines and small industrial flywheels, the rotors of modern high-power flywheel energy storage systems are high-speed rotating precision components. During assembly, they must be slowly, coaxially, and without collision into the housing in a vertical posture. The assembly clearance between the flywheel rotor and the magnetic levitation bearing stator is extremely small, typically only 0.5 mm to 1 mm. This places much higher demands on the horizontality, verticality, posture stability, and positioning accuracy of the hoisting process than on traditional mechanical flywheels.

[0003] Traditional mechanical flywheel hoisting primarily aims at "transfer, lifting, and positioning," with relatively low requirements for levelness and attitude control precision, allowing for a certain degree of tilting and manual correction. However, the hoisting of high-power energy storage flywheel rotors not only needs to meet heavy-load lifting requirements, but more importantly, it requires real-time leveling, attitude locking, and collision-free insertion into the casing during the hoisting process. Therefore, the two differ fundamentally in terms of technical difficulty, precision requirements, and safety risks.

[0004] More specifically, existing hoisting fixtures for heavy, large-volume energy storage flywheel rotors still follow traditional approaches, and generally suffer from the following drawbacks: First, it is impossible to achieve real-time horizontal fine-tuning during hoisting. Most traditional lifting equipment is single-point lifting, two-point lifting, or integral rigid lifting beam. After lifting, the flywheel attitude is fixed. Once it tilts, it cannot be corrected while suspended. It can only be lowered to readjust the lifting point. Repeated lifting and lowering is extremely inefficient, and lifting heavy rotors multiple times poses a major safety hazard.

[0005] Secondly, the levelness control precision is insufficient, making it difficult to meet the requirements for small-gap insertion into the housing. The eccentricity of the self-weight of the heavy and large-sized flywheel and the uneven force on the lifting points can easily lead to tilting. However, the current traditional lifting tools do not have multi-point independent adjustment mechanisms, resulting in large levelness errors. This can easily cause the rotor to scrape, bump, or jam against the inner wall of the housing, damaging the precision of the rotor's machined surface and the fit with the housing, directly affecting the stability and safety of the flywheel during subsequent high-speed operation.

[0006] Third, it has poor adaptability to heavy loads and a high risk of uneven loading. Current traditional flywheel lifting devices have small design loads and simple support structures. When used for heavy-duty energy storage flywheels, they are prone to problems such as uneven stress, local stress concentration, and deformation of lifting points, which cannot guarantee the structural stability and lifting safety under heavy loads.

[0007] Fourth, it lacks adaptive alignment and attitude locking functions. The current traditional lifting device and rotor are rigidly connected, which cannot compensate for thread installation deviations and force skew, and is prone to causing forced stress; moreover, there is no reliable locking mechanism after adjustment, and the length changes due to vibration during the lifting and installation process can disrupt the horizontal attitude, resulting in a high assembly failure rate.

[0008] In summary, the above analysis shows that the existing flywheel hoisting solutions cannot provide functions such as "full horizontal, vertical coaxial, and contactless insertion into the shell". Therefore, in terms of construction accuracy and safety, they are no longer able to match the heavy weight and large size assembly process of the new generation of flywheel energy storage equipment, especially high-power energy storage flywheels. Utility Model Content

[0009] To address one or more of the above-mentioned defects or needs in the existing technology, this utility model provides a flywheel energy storage rotor hoisting tool. By closely combining the structure of the flywheel energy storage rotor itself and the characteristics of the hoisting conditions, targeted improvements are made to the matching special hoisting tool in terms of its overall structure and the structure and arrangement of its components. Accordingly, it can not only effectively solve the problems of insufficient levelness, high risk of off-center load, and inability to smoothly insert vertically into the shell during heavy-load hoisting in the existing technology, but also realize functions such as real-time detection, independent fine adjustment, rapid locking, and reduction of off-center load in the hoisting hovering state. Therefore, it is particularly suitable for the assembly requirements of high-power flywheel energy storage rotors with large weight, large size, small gap, no collision, and high coaxiality.

[0010] To achieve the above objectives, according to this utility model, a flywheel energy storage rotor hoisting tool is provided, which includes a main lifting ring, a cross strut, a connecting rod assembly, lifting ring screws, and a level measuring unit, wherein: The four booms of the cross strut are symmetrically distributed and each forms an independent lifting point; the main lifting ring is located at the center of the cross strut and is used to connect the crane hook. The connecting rod components are respectively vertically mounted on the four arms of the cross strut, and they can be independently extended or shortened in the height direction; the lifting eye bolts are provided corresponding to each of the connecting rod components, and they are respectively used to screw into the top threaded hole of the flywheel energy storage rotor to be lifted, and then connect to the lower end of the corresponding connecting rod component, thereby jointly performing the lifting and bearing of the flywheel energy storage rotor. The horizontal measurement unit is installed on the cross strut or the upper end face of the flywheel energy storage rotor, and is used to monitor the horizontal status of the flywheel energy storage rotor in real time after it is lifted. The connecting rod component independently corrects the front-back and left-right horizontal attitude of the flywheel energy storage rotor according to the real-time monitored horizontal status, until the horizontality is adjusted to meet the requirements for insertion into the shell. In addition, locking nuts are installed at the upper and lower ends of each of the connecting rod components to lock the hoisting length of the connecting rod components after the leveling adjustment is completed.

[0011] As a further preferred embodiment of this utility model, the above-mentioned flywheel energy storage rotor hoisting tool also includes spherical washers. The spherical washers are respectively disposed on the contact surfaces between the lifting eye screw and the flywheel energy storage rotor, and are used to form a spherical self-adaptation, which can automatically compensate for off-center load and installation deviation while eliminating rigid connection stress.

[0012] As a further preferred embodiment of this invention, the cross strut is made of a rigid hollow profile.

[0013] As a further preferred embodiment of this invention, each of the connecting rod components is axially slidably mounted on the four arms of the cross strut.

[0014] As a further preferred embodiment of this utility model, each of the connecting rod components is made of turnbuckle.

[0015] As a further preferred embodiment of this utility model, each of the connecting rod components adopts the form of a forward and reverse thread adjusting screw and is equipped with a handwheel structure.

[0016] As a further preferred embodiment of this invention, each of the aforementioned eye bolts can be replaced with a quick-release pin structure.

[0017] As a further preferred embodiment of this invention, the level measuring unit is a spirit level or an electronic level.

[0018] In summary, compared with the prior art, the above-described technical solution conceived by this utility model has the following main technical advantages: (1) The innovation of this utility model lies first in recognizing the technical requirements of real-time leveling, attitude locking and collision-free insertion into the shell during the hoisting process of the flywheel energy storage rotor. By redesigning the supporting special hoisting tools in terms of their overall structure and spatial layout, it can not only smoothly realize the online, real-time and high-precision leveling of the flywheel energy storage rotor during the entire hoisting process, but also provide functions such as real-time detection, rapid locking and reduction of off-center load in the hoisting hovering state. It effectively avoids the typical problems in the prior art, such as insufficient leveling control accuracy, difficulty in meeting small gap insertion into the shell, poor heavy load adaptability and high risk of off-center load. (2) The hoisting tool designed in this utility model has also made targeted improvements to some components such as the mutual setting method and working mechanism of the connecting rod components, lifting eye screws and horizontal measuring units; among them, by independently adjusting the hoisting length of the four sets of connecting rod components, the bidirectional precise correction of the horizontality of the flywheel energy storage rotor hoisting can be performed. On this basis, combined with the data feedback of the horizontal measuring unit and the uniform force and connection of the cross strut, a high-precision multi-point leveling function can be achieved. (3) The hoisting tool designed in this utility model locks the hoisting length of the connecting rod component by setting double locking nuts, which can ensure the stability of the posture throughout the entire process of entering the shell; in addition, by setting spherical washers as an adaptive connection structure, not only can the rigid connection stress between the lifting eye screw and the flywheel energy storage rotor be eliminated, but also the off-center load and installation deviation can be automatically compensated, further ensuring the stability of the hoisting process. (4) The hoisting tool designed in this utility model includes an integrated operation of "hovering-detection-fine adjustment-locking-shell insertion" during use. It can realize the attitude controllability and collision-free insertion of the flywheel energy storage rotor throughout the assembly process, without the need for repeated lifting and lowering of the hook. Moreover, the overall assembly efficiency can be increased by more than 50%, and the success rate of one-time insertion into the shell is high. It meets the requirements of millimeter-level gap insertion into the shell and eliminates phenomena such as bumping, scratching, and jamming. Therefore, it is especially suitable for the specific assembly requirements of high-power flywheel energy storage rotor with large weight, large size, small gap, no collision, and high coaxiality. Attached Figure Description

[0019] Figure 1 This is a three-dimensional view of the overall structure of the flywheel energy storage rotor hoisting tool designed according to the preferred embodiment of this utility model; Figure 2 yes Figure 1 The image shows a side view of the overall structure of the flywheel energy storage rotor hoisting tool.

[0020] In all the accompanying drawings, the same reference numerals are used to denote the same elements or structures, wherein: 1-Main lifting eye; 2-Cross strut; 3-Connecting rod assembly; 4-Lifting eye screw; 5-Spherical washer; 6-Flywheel energy storage rotor; 7-Horizontal measuring unit. Detailed Implementation

[0021] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are only for explaining the utility model and are not intended to limit the utility model. Furthermore, the technical features involved in the various embodiments of this utility model described below can be combined with each other as long as they do not conflict with each other.

[0022] It should be understood that expressions such as "comprising" and "may include" as used in this application indicate the existence of the disclosed functions, operations, or constituent elements, and do not limit one or more additional functions, operations, and constituent elements. In this application, terms such as "comprising" and / or "having" may be interpreted as indicating a specific characteristic, number, operation, constituent element, component, or combination thereof, but should not be interpreted as excluding the existence or possibility of adding one or more other characteristics, numbers, operations, constituent elements, components, or combinations thereof.

[0023] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this application, "multiple" means two or more, unless otherwise explicitly specified.

[0024] Figure 1 This is a three-dimensional view of the overall structure of the flywheel energy storage rotor hoisting tool designed according to the preferred embodiment of this utility model. Figure 2 yes Figure 1 The image shows a side view of the overall structure of the flywheel energy storage rotor hoisting tool. The following will refer to... Figure 1 and Figure 2 To explain this utility model in more detail.

[0025] The flywheel energy storage rotor hoisting tool designed in this utility model mainly includes a main lifting ring 1, a cross strut 2, a connecting rod component 3, a lifting ring screw 4, and a horizontal measuring unit 7, etc. Each component will be explained in detail below.

[0026] like Figure 1 As shown, the four arms of the cross strut 2 are symmetrically distributed and form independent lifting points respectively; the main lifting ring 1 is set at the center of the cross strut 2 and is used to connect the crane hook; more specifically, the cross strut 2 is made of rigid hollow profile, for example, and its four arms are symmetrically distributed, which not only forms four independent lifting points, but also provides uniform force during hoisting, thus making it more suitable for the heavy weight and large size hoisting requirements of high-power flywheel energy storage rotors.

[0027] As a cooperating component, the connecting rod components 3 are respectively vertically mounted on the four arms of the cross strut 2, and they can be independently extended or shortened in the height direction; the lifting eye screws 4 are provided corresponding to each of the connecting rod components 3, and they are respectively used to screw into the top threaded hole of the flywheel energy storage rotor 6 to be lifted, and then connect to the lower end of the corresponding connecting rod component 3, thereby jointly performing the lifting and bearing of the flywheel energy storage rotor 6; Based on this, the horizontal measurement unit 7 is set on the cross strut 2 or the upper end face of the flywheel energy storage rotor 6, and is used to monitor the horizontal state of the flywheel energy storage rotor 6 in real time after it is lifted; accordingly, the connecting rod component 3 independently corrects the front-back and left-right horizontal attitude of the flywheel energy storage rotor 6 according to the real-time monitored horizontal state, until the horizontality is adjusted to meet the requirements for entering the shell.

[0028] As another cooperating component, locking nuts are installed at both the upper and lower ends of each of the connecting rod components 3 to lock the lifting length of the connecting rod component 3 after the leveling adjustment is completed. In addition, spherical washers 5 are respectively provided on the contact surfaces between the eye bolt 4 and the flywheel energy storage rotor to form a spherical self-adaptive system, which eliminates rigid connection stress and automatically compensates for off-center loads and installation deviations.

[0029] Based on the above design, on the one hand, this invention allows for bidirectional and precise correction of the flywheel energy storage rotor's horizontal alignment by independently adjusting the hoisting length of four sets of connecting rod components. Combined with data feedback from the horizontal measurement unit and the uniform force and connection of the cross struts, it achieves high-precision multi-point leveling. On the other hand, this invention also specifically considers functions such as quick locking and off-center load compensation to better ensure the final horizontal alignment adjustment effect. Specifically, by setting double locking nuts to lock the hoisting length of the connecting rod components, it ensures stable posture throughout the entire insertion process. Furthermore, by setting spherical washers as an adaptive connection structure, it not only eliminates rigid connection stress between the lifting eye bolts and the flywheel energy storage rotor but also automatically compensates for off-center loads and installation deviations, further ensuring the stability of the hoisting process.

[0030] It should be noted that the connecting rod component in this invention can adopt various structures from the mechanical field, such as axially sleeved rod components, as long as the telescopic adjustment function can be achieved. For example, it can be directly in the form of a turnbuckle. In addition, it can also be in the form of a forward and reverse thread adjusting screw, equipped with a handwheel structure, thereby appropriately improving the adjustment accuracy and labor saving. The eye bolt in this invention can also be replaced with a quick-release pin structure, thereby appropriately improving assembly efficiency.

[0031] It should also be noted that the level measuring unit in this utility model can be a spirit level or an electronic level. The electronic level can be connected to a computer or other equipment and execute appropriate algorithm processing, thereby realizing automated display and remote monitoring.

[0032] The assembly method of this utility model will be explained in detail below, which includes the following steps: S1. Pre-installation of lifting device: Install the lifting eye screws 4 evenly in the top threaded holes of the flywheel energy storage rotor through the spherical washers 5; S2, Lifting tool connection: The crane hook lifts the entire lifting tool described above, and then the lower end of each of the connecting rod components 3 is connected to the corresponding eye bolt 4; S3. Hovering detection: The flywheel energy storage rotor is lifted to a point where it is detached from the support surface and hovers in the air; then, the levelness of the end face of the flywheel energy storage rotor is read in real time by the level measurement unit 7. S4. Four-point independent leveling: Based on the level deviation obtained by the level measuring unit 7, the connecting rod component 3 at the corresponding position is adjusted independently, thereby correcting the front-back and left-right horizontal attitude of the flywheel energy storage rotor point by point until the level is adjusted to meet the housing requirements. S5. Locking and positioning: After completing the leveling adjustment, tighten all the locking nuts to lock the hoisting length of all the connecting rod components 3, and then keep the attitude of the flywheel energy storage rotor unchanged throughout the entire process. S6. Precise insertion into the casing: Keep the crane hook lowered slowly and at a constant speed so that the flywheel energy storage rotor is inserted into the casing without collision.

[0033] In summary, the flywheel energy storage rotor hoisting tool designed in this utility model can not only effectively solve the problems of insufficient levelness, high risk of off-center load, and inability to smoothly insert vertically into the shell during heavy-load hoisting in the prior art, but also realize functions such as real-time detection, independent fine adjustment, rapid locking, and reduction of off-center load in the hoisting and hovering state. Therefore, it is particularly suitable for the assembly requirements of high-power flywheel energy storage rotors with large weight, large size, small gap, no collision, and high coaxiality, and has good versatility and promotion value.

[0034] Those skilled in the art will readily understand that the above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A flywheel energy storage rotor hoisting tool, characterized in that, It includes a main lifting eye (1), a cross strut (2), a connecting rod assembly (3), a lifting eye bolt (4), and a level measuring unit (7), wherein: The four booms of the cross strut (2) are symmetrically distributed and form independent lifting points respectively; the main lifting ring (1) is set at the center of the cross strut (2) and is used to connect the crane hook; The connecting rod components (3) are respectively vertically mounted on the four arms of the cross strut (2), and they can be independently extended or shortened in the height direction; the lifting eye screws (4) are provided corresponding to each of the connecting rod components (3), and they are respectively used to screw into the top threaded hole of the flywheel energy storage rotor to be lifted, and then connected to the lower end of the corresponding connecting rod component (3), thereby jointly performing the lifting and bearing of the flywheel energy storage rotor; The horizontal measurement unit (7) is set on the cross strut (2) or the upper end face of the flywheel energy storage rotor, and is used to monitor the horizontal state of the flywheel energy storage rotor in real time after it is lifted; the connecting rod component (3) independently corrects the front-back and left-right horizontal attitude of the flywheel energy storage rotor according to the real-time monitored horizontal state, until the horizontality is adjusted to meet the requirements for entering the shell; In addition, locking nuts are installed at the upper and lower ends of each of the connecting rod components (3) to lock the hoisting length of the connecting rod components (3) after the leveling adjustment is completed.

2. The flywheel energy storage rotor hoisting tool as described in claim 1, characterized in that, The aforementioned flywheel energy storage rotor hoisting tool also includes spherical washers (5). The spherical washers (5) are respectively set on the contact surface between the lifting eye screw (4) and the flywheel energy storage rotor, and are used to form spherical self-adaptation, which can automatically compensate for off-center load and installation deviation while eliminating rigid connection stress.

3. The flywheel energy storage rotor hoisting tool as described in claim 1 or 2, characterized in that, The cross strut (2) is made of rigid hollow profile.

4. The flywheel energy storage rotor hoisting tool as described in claim 1 or 2, characterized in that, Each of the connecting rod components (3) is axially slidably mounted on the four arms of the cross strut.

5. The flywheel energy storage rotor hoisting tool as described in claim 1 or 2, characterized in that, For each of the aforementioned connecting rod components (3), a turnbuckle is used.

6. The flywheel energy storage rotor hoisting tool as described in claim 1 or 2, characterized in that, Each of the connecting rod components (3) adopts the form of a forward and reverse thread adjusting screw and is equipped with a handwheel structure.

7. The flywheel energy storage rotor hoisting tool as described in claim 1 or 2, characterized in that, For each of the aforementioned eye bolts (4), it can be replaced with a quick-release pin structure.

8. The flywheel energy storage rotor hoisting tool as described in claim 1 or 2, characterized in that, For the horizontal measuring unit (7), a level ruler or an electronic level is used.

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