Lifting device

Abstract

The utility model provides lifting equipment which is used for lifting or lowering parts of a wind generating set to a preset height. The lifting device comprises a base; the bracket is fixedly arranged on the base; the lifting part is mounted on the base; the connecting piece is arranged on the lifting part, the lifting part can drive the connecting piece to move up and down, the connecting piece is used for being connected with the wind generating set component and bearing the weight of the wind generating set component, and the support can guide the lifting part to move up and down. According to the embodiment, the lifting equipment is used for lifting the wind generating set component to replace a crane to lift the wind generating set component, the high-altitude operation risk and the large space occupied by the crane can be avoided, the site utilization rate is increased, and the operation cost is reduced.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of wind power generation, and more particularly, to a lifting device. BACKGROUND

[0002] The nacelle, impeller and transmission chain of a wind turbine are large and heavy components, and during the process of moving them, a crane and a lifting tool are needed to hoist the components onto a moving vehicle or a transport vehicle. For example, when the nacelle or the transmission chain needs to be moved within a workshop, a crane is usually used to hoist the nacelle or the transmission chain, and then a transport vehicle (e.g., an AGV trolley) enters the space below the nacelle or the transmission chain, and the nacelle or the transmission chain is placed onto the transport vehicle. For another example, when the impeller needs to be transported and placed in a yard, a crane is needed to hoist the impeller and then place it onto a transport vehicle (e.g., a heavy truck) for delivery.

[0003] However, when the crane is operating inside the workshop, it will greatly occupy the internal space of the workshop and also affect the normal operation of other components in the workshop. Similarly, when the crane is operating in the yard, enough space is needed to be reserved for the crane in the yard for placement and operation, which will affect the storage capacity of the components of the wind turbine and the efficiency of the yard. In addition, there is a risk of high-altitude operation when installing and dismounting the lifting tool in cooperation with the crane. CONTENT OF THE UTILITY MODEL

[0004] Therefore, the purpose of the present application is to provide a lifting device to solve at least one of the problems existing in the prior art or related technology.

[0005] An aspect of the utility model provides a lifting device for lifting or lowering a wind turbine component to a predetermined height, the lifting device comprising: a base; a support fixedly arranged on the base; a lifting part mounted on the base; and a connecting piece arranged on the lifting part, the lifting part being capable of driving the connecting piece to move up and down, the connecting piece being used for connecting with the wind turbine component and bearing the weight of the wind turbine component, and the support being capable of guiding the lifting part to move up and down.

[0006] Further, in some embodiments, the lifting device further comprises an anti-toppling support leg, the anti-toppling support leg being movably connected with the support and being capable of being switched between a first position and a second position, in the first position, the anti-toppling support leg is accommodated on the support, and in the second position, the anti-toppling support leg can be supported on the ground at a position separated from the base by a predetermined distance.

[0007] Further, in some embodiments, the anti-toppling support leg and the connecting piece are arranged on the same side of the support and can be respectively locked in the first position and the second position.

[0008] Further, in some embodiments, the first end of the anti-toppling leg is provided with a shaft hole and is rotatably connected to the bracket through a rotating shaft, the first end of the anti-toppling leg is further provided with a first pin hole and a second pin hole, the first pin hole and the second pin hole are respectively located on the two sides of the shaft hole, the bracket is provided with a third pin hole and a pin shaft capable of being inserted into the third pin hole, in the first position, the first pin hole is aligned with the third pin hole and is locked through the pin shaft, and in the second position, the second pin hole is aligned with the third pin hole and is locked through the pin shaft.

[0009] Further, in some embodiments, the lifting device further comprises a driving part connected to the lifting part, for driving the lifting part to move up and down with the connecting piece, and the bracket can guide the up and down movement of the connecting piece.

[0010] Further, in some embodiments, the lifting part is a hydraulic cylinder or a pneumatic cylinder, comprising a cylinder body and a piston rod capable of extending and retracting relative to the cylinder body, the piston rod is fixedly connected to the base, and the connecting piece is connected to the cylinder body.

[0011] Further, in some embodiments, the lifting part is a hydraulic cylinder, and the driving part comprises a servo hydraulic pump station arranged on the base and used for controlling the lifting of the cylinder body.

[0012] Further, in some embodiments, the driving part further comprises a manual pump connected to the oil tank of the servo hydraulic pump station and the hydraulic cylinder, and capable of driving the lifting of the cylinder body.

[0013] Further, in some embodiments, the lifting device further comprises a plurality of telescopic rollers, the plurality of telescopic rollers are arranged in the base and can extend relative to the lower surface of the base to rollably support the lifting device.

[0014] Further, in some embodiments, each telescopic roller is mounted on a telescopic cylinder, and the lifting device further comprises a roller telescopic control unit, the roller telescopic control unit comprises a pneumatic pump or a hydraulic pump, and the roller telescopic control unit is connected to each telescopic cylinder to drive the telescopic roller to extend or retract relative to the base.

[0015] Further, in some embodiments, the connecting piece is provided with a locking socket capable of being connected to a wind turbine generator set component or a load-bearing part for supporting the wind turbine generator set component, and the lifting device further comprises an anti-dropping pin placed on the bracket and capable of being locked through the anti-dropping pin after the locking socket is aligned with a socket on the load-bearing part.

[0016] Further, in some embodiments, the lifting device further comprises an adapter capable of being detachably connected to the connecting piece to connect the wind turbine generator set component through the adapter.

[0017] Further, in some embodiments, a top plate is arranged on the support, a through hole is arranged on the top plate, the cylinder can pass through the through hole when moving upward and is supported by the top plate.

[0018] Further, in some embodiments, the lifting device further comprises a controller, a displacement sensor and a pressure sensor, the displacement sensor is used to collect position information of the connecting piece, the pressure sensor is used to collect pressure information borne by the connecting piece, and the controller controls the driving part according to the position information and the pressure information, so as to control the lifting operation of the lifting part.

[0019] Further, in some embodiments, the lifting device further comprises a balance valve, the balance valve is installed between the servo hydraulic pump station and the oil cavity of the cylinder, and is used to limit the position of the cylinder when stopping.

[0020] Further, in some embodiments, the connecting piece and the lifting part are rotatably connected, and can rotate downward by a predetermined angle under the action of the weight of the wind turbine component.

[0021] In the embodiment of the utility model, the wind turbine component is lifted by the lifting device, instead of lifting the wind turbine component by the crane, the risk of high-altitude operation can be avoided, the large space occupied by the crane is eliminated, the cost of renting the crane is saved, and the cost is saved.

[0022] Further aspects and / or advantages of the overall concept of the utility model will partially be elucidated in the following description of the embodiments of the utility model, and / or will become apparent from the description, or can be learnt by practicing the overall concept of the utility model. BRIEF DESCRIPTION OF DRAWINGS

[0023] The above and other objects and features of the present application will become more apparent from the following description of embodiments of the present application given for the purposes of illustration in connection with the accompanying drawings, in which:

[0024] Figure 1 、 Figure 2 and Figure 3 are respectively perspective structural schematic diagrams of the lifting device according to the embodiments of the utility model in different angles;

[0025] Figure 4 、 Figure 5 and Figure 6 are respectively perspective structural schematic diagrams of a local structure of the lifting device according to the embodiments of the utility model in different angles;

[0026] Figure 7 is a structural schematic diagram of the connecting piece in the lifting device according to the embodiments of the utility model;

[0027] Figure 8 is a structural schematic diagram of the anti-toppling support leg in the lifting device according to the embodiments of the utility model;

[0028] Figure 9 is an application example of lifting a drive chain of a wind turbine generator set by a lifting device according to an embodiment of the present application;

[0029] Figures 1 to 9 Explanation of reference numerals:

[0030] 10 lifting device;

[0031] 100 base; 110 telescopic roller; 120 universal wheel; 130 air pressure pump; 140 power supply;

[0032] 200 support; 210 guide rail; 220 connecting lug; 230 pin shaft; 240 top plate; 241 through hole; 250 anti-dropping pin;

[0033] 300 lifting part; 310 cylinder body; 320 piston rod; 330 connecting piece mounting seat; 340 guide part; 350 locking structure; 351 locking bolt; 352 nut;

[0034] 400 servo hydraulic pump station;

[0035] 500 connecting piece; 510 locking jack; 520 arc-shaped groove;

[0036] 600 anti-toppling support leg; 610 first shaft hole; 620 first pin hole; 630 second pin hole;

[0037] 700 balance valve;

[0038] 800 manual pump;

[0039] 910 controller; 920 displacement sensor; 930 pressure sensor;

[0040] 20 drive chain;

[0041] 30 bearing part. DETAILED DESCRIPTION

[0042] The following detailed description is provided to aid the reader in understanding the methods, devices, and / or systems described herein. However, various changes, modifications, and equivalents of the methods, devices, and / or systems described herein will be clear to those skilled in the art after understanding the present disclosure. For example, the order of the operations described herein is merely an example, and is not limited to those set forth herein, but can be changed as will be clear to those skilled in the art after understanding the present disclosure, except for operations that must occur in a specific order. In addition, the description of features known in the art can be omitted for the sake of more clarity and conciseness.

[0043] The features described herein can be implemented in different ways depending upon the example being implemented. The examples described herein are not implemented as limiting but to illustrate only some of the many possible implementations of the methods, devices, and / or systems described herein, which implementations will be apparent to those skilled in the art after understanding the disclosure provided.

[0044] As used herein, the term "and / or" includes any one of the associated listed items, as well as any combination of any two or more of the associated listed items.

[0045] Although terms such as "first", "second", and "third" can be used herein to describe various components, assemblies, regions, layers or sections, these components, assemblies, regions, layers or sections should not be limited by these terms. Instead, these terms are used only to distinguish one component, assembly, region, layer or section from another component, assembly, region, layer or section. Thus, a component, assembly, region, layer or section referred to as a first component, a first assembly, a first region, a first layer or a first section in the examples described herein can also be referred to as a second component, a second assembly, a second region, a second layer or a second section without departing from the teachings of the examples.

[0046] In the specification, when an element such as a layer, a region, or a substrate is referred to as "on" another element, "connected to" or "coupled to" another element, it can be "directly on," "directly connected to" or "directly coupled to" the other element, or one or more other elements can be interposed therebetween. In contrast, when an element is referred to as being "directly on," "directly connected to" or "directly coupled to" another element, there are no other elements interposed therebetween.

[0047] The terminology used herein is for the purpose of describing various examples only and is not intended to be limiting of the disclosure. As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise. The terms "comprises", "comprising", "includes", "including" and "has", "having" as used herein, specify the presence of stated features, numbers, operations, components, elements, and / or combinations thereof, but do not preclude the presence or addition of one or more other features, numbers, operations, components, elements, and / or combinations thereof. The term "plurality" represents any number of two or more.

[0048] The terms "upper", "lower", "top", "bottom", and the like in the present application are defined based on the orientation of the product in the normal use state, unless otherwise specified in the drawings.

[0049] Unless otherwise defined, all terms used herein, including technical and scientific terms, shall have the same meaning as commonly understood by one of ordinary skill in the art to which this application pertains upon understanding this application. Unless expressly defined herein, terms such as those defined in a general dictionary shall be interpreted as having a meaning consistent with their meaning in the context of the relevant field and in this application, and shall not be interpreted in an idealized or overly formalistic manner.

[0050] To address the lifting and lowering problem of large wind turbine components in existing technologies, this application provides a lifting device and a lifting method for wind turbine components.

[0051] According to embodiments of this application, a ground-based lifting device is used to lift wind turbine generator components to a predetermined height before placing them on a support (e.g., a transport vehicle). This replaces the traditional method of using cranes to lift wind turbine generator components, which not only avoids the large space occupied by cranes and improves the space utilization rate of workshops or storage yards, but also avoids the risks of working at heights. In the prior art, when using cranes to lift wind turbine generator components, the cranes are usually rented, resulting in high rental costs. Using the lifting device of this application eliminates the need for crane rental, saving costs.

[0052] The following, in conjunction with the appendix Figures 1 to 9 This application provides a detailed description of the lifting device 10 and the component lifting method proposed in the embodiments.

[0053] like Figure 1 and Figure 2 The lifting device 10 includes a base 100, a lifting section 300 mounted on the base 100, and a connector 500 mounted on the lifting section 300. The connector 500 can be connected to wind turbine generator components. The lifting section 300 can drive the connector 500 to move up and down, thereby causing the wind turbine generator components to rise or fall accordingly.

[0054] The connection between the connector 500 and the wind turbine generator components can be achieved in various ways, including direct connection and indirect connection. For example, the connector 500 can be directly connected to the wind turbine generator components, or connected to the wind turbine generator components through an adapter, or connected to the support part 30 that supports the wind turbine generator components, as long as it can support the generator components.

[0055] According to embodiments of this application, the base 100 may include a support base plate. The support base plate contacts the ground surface, facilitating the stable placement of the lifting device 10 on the ground and thus providing stable support for the wind turbine generator components. As an optional example, the base 100 may also include multiple support legs, providing multi-point support to the ground. The structure and arrangement of the base 100 can vary, as long as it provides stable support.

[0056] According to an embodiment of this application, the lifting part 300 is a telescopic component that can extend or retract upward relative to the base 100 to drive the wind turbine generator components to rise or fall. As an example, the lifting part 300 can be a hydraulic cylinder, pneumatic cylinder, electric telescopic cylinder, lead screw, or similar structure. The lifting and lowering operation of the connecting member 500 is achieved through the telescopic movement of the lifting part 300.

[0057] As a non-limiting example, since wind turbine components are typically heavy, in the embodiments of this application, the lifting section 300 uses a hydraulic cylinder. The hydraulic cylinder has a large driving power and uses hydraulic oil to drive the lifting section 300 to move the wind turbine components upward, making the driving process more stable and reliable.

[0058] like Figure 1 , Figure 2 and Figure 4 As shown, the hydraulic cylinder includes a cylinder body 310 and a piston rod 320 that can extend and retract relative to the cylinder body 310. As an example, the piston rod 320 is fixedly connected to the base 100, and the connecting member 500 is connected to the cylinder body 310. The cylinder body 310 extends and retracts relative to the piston rod 320 to drive the connecting member 500 to rise and fall. The cylinder body 310 is located outside the piston rod 320, making it easier to connect to the connecting member 500. Furthermore, the cylinder body 310 has high structural strength, which is beneficial for providing stable support for wind turbine generator components. Therefore, in the embodiments of this application, the piston rod 320 is fixed to the base 100 in an inverted manner, while the cylinder body 310 moves up and down.

[0059] Furthermore, the lifting device 10 may also include a drive unit, which moves the lifting unit 300 up and down. As an example, the drive unit may be mounted on the base 100, or may be mounted separately from the base 100, or may be an external component attached to the lifting device 10, as long as it can provide driving force for the lifting operation of the lifting device 10.

[0060] In the embodiments of the present application, the driving part is arranged on the base 100, so that the lifting device 10 is formed into an integrated modular structure, improving the convenience in use. As an example, the driving part includes a servo hydraulic pump station 400 and a power supply 140 for providing power for the servo hydraulic pump station 400, and the servo hydraulic pump station 400 is used to control the lifting of the cylinder body 310 of the hydraulic cylinder, and then drive the lifting of the connecting piece 500. Although in the present example, the servo hydraulic pump station 400 is arranged on the base 100, the present application is not limited thereto, and the lifting device 10 can also use an external servo hydraulic pump station.

[0061] As shown in Figure 1 , the driving part can also include a manual pump 800 connected to the oil tank of the servo hydraulic pump station 400 and the hydraulic cylinder, which can also supply oil in the oil tank to the hydraulic cylinder to control the lifting of the cylinder body 310 when the servo hydraulic pump station 400 fails.

[0062] As shown in Figure 2 , Figure 4 and Figure 5 , the lifting device 10 can also be equipped with a balance valve 700 installed between the servo hydraulic pump station 400 and the oil cavity of the cylinder body 310, which is used to accurately control the lifting speed and stopping position of the cylinder body 310.

[0063] The balance valve 700 here is a hydraulic balance valve, which is matched with the hydraulic cylinder of the lifting part 300. The balance valve 700 is also called a speed limiting lock, which is an external control and internal leakage type one-way sequence valve. This valve can make the hydraulic cylinder stop at any position without sliding down due to the weight of the load. Because the balance valve 700 can establish a certain back pressure in the circuit when working, it can effectively avoid the generation of impact and vibration, and the negative pressure in the upper cavity of the lifting oil cylinder caused by the weight of the load and overspeed sliding down.

[0064] Specifically, the hydraulic balance valve changes the flow resistance of the fluid flowing through the valve by changing the gap between the valve core and the valve seat (i.e. the opening degree), so as to achieve the purpose of adjusting the flow. Specifically, when the pressure at the inlet increases, the valve core inside the balance valve will move towards the valve port under the drive of the hydraulic pressure, automatically reducing the flow diameter and reducing the change of flow; vice versa. This counter-regulation makes the balance valve automatically adjust the flow area according to the change of system pressure, so as to maintain the stability of the system. In general, the hydraulic balance valve can realize accurate control and stable operation of the hydraulic system, and provides guarantee for safe and efficient operation of the hydraulic cylinder.

[0065] According to the embodiments of the present application, the connecting piece 500 can be directly connected to the wind turbine component, or can be connected with a bearing part for supporting the wind turbine component. As shown in Figure 9As shown in the figure, the transmission chain 20 is arranged on the bearing part 30, and in the process of lifting the transmission chain 20, the lifting device 10 is connected with the bearing part 30 below the transmission chain 20 through the connecting piece 500 to support the weight of the transmission chain 20.

[0066] In addition, the lifting device 10 can also include an adapter piece, and the connecting piece 500 can be connected with the wind turbine component or the bearing part 30 supporting the wind turbine component through the adapter piece, so as to improve the versatility of the lifting device 10 of the present application.

[0067] According to the embodiments of the present application, the connecting piece 500 or the adapter piece can be connected with the wind turbine component in the form of plug-in connection. As an example, the front end of the connecting piece 500 can be inserted into the corresponding slot of the wind turbine component or the corresponding slot on the bearing part supporting the wind turbine component to realize the connection between the two. In order to avoid the connecting piece 500 from being easily separated from the slot, as shown in the figure, a locking socket 510 is arranged on the front end of the connecting piece 500, and after the front end of the connecting piece 500 is inserted into the corresponding slot, the anti-escape pin 250 is inserted into the slot and the locking socket 510 along the direction perpendicular to the insertion direction of the connecting piece 500, so as to lock the connecting piece 500. When locking is not required, as shown in the figure, the anti-escape pin 250 can be placed on the anti-escape pin support frame on the bracket 200, so as to facilitate the storage of the anti-escape pin 250. Figure 7 Figure 2

[0068] Of course, the connecting piece 500 can also be detachably connected with the wind turbine component in other ways, for example, through bolt connection, which will not be listed one by one here.

[0069] In some embodiments, the connecting piece 500 is rotatably arranged on the lifting part 300, so that under the action of the weight of the wind turbine component, the connecting piece 500 can rotate a predetermined angle relative to the lifting part 300.

[0070] ​​Generally, the wind turbine component is heavy, and after the lifting device 10 supports the wind turbine component, the lifting device 10 will tilt towards the wind turbine component under the weight of the wind turbine component, and the base 100 of the lifting device 10 can be lifted off the ground on the side away from the wind turbine component, causing the lifting device 10 to be unstable and prone to shaking or even tipping over during lifting. The inventor of the present application has found through research and repeated testing that, under the condition that the connecting piece 500 supports the wind turbine component and is adaptively rotated by a certain angle, the side of the base 100 can be prevented from being lifted off the ground. Therefore, according to the embodiments of the present application, the connecting piece 500 of the lifting device 10 is rotationally connected to the lifting portion 300, so that after being connected to the wind turbine component, the connecting piece 500 is adaptively rotated by a certain angle relative to the lifting portion 300 under the weight of the wind turbine component, so that the center of gravity is adjusted, the size of the rotational torque is adjusted, the stress on both sides of the lifting device 10 is further balanced, the base 100 is prevented from being lifted, and the lifting device 10 is stably supported on the ground, thereby making the lifting operation of the wind turbine component more stable and safe.

[0071] Further, as shown in Figure 5 and Figure 6 , the lifting portion 300 further comprises a connecting piece mounting seat 330 fixed on the lifting portion 300, and the connecting piece 500 is rotationally supported by the connecting piece mounting seat 330. By providing the connecting piece mounting seat 330, the connection between the connecting piece 500 and the lifting portion 300 can be more convenient.

[0072] As shown in Figure 5 , Figure 6 and Figure 7 , the connecting piece mounting seat 330 has a protruding arc-shaped support surface, and the connecting piece 500 has an arc-shaped groove 520 matched with the arc-shaped support surface, the connecting piece 500 is arranged on the arc-shaped support surface through the arc-shaped groove 520 and can rotate relative to the connecting piece mounting seat 330.

[0073] As an example, the connecting piece mounting seat 330 comprises an annular mounting seat body and two support shafts protruding transversely relative to the mounting seat body. The mounting seat body has a hollow structure and can be sleeved on the cylinder body 310 and fixedly connected with the cylinder body 310. The two support shafts are respectively located on both sides of the cylinder body 310 and extend in the horizontal direction. By providing two support shafts on both sides of the cylinder body 310 to support the connecting piece 500, the stress of the structure can be dispersed, and the support stability can be improved.

[0074] Since the relative rotation angle of the connecting piece 500 is less than 90 degrees, the support shaft can be formed as a semicircular arc-shaped support surface, without having to form a complete cylindrical shape. The connecting piece mounting seat 330 can further include at least two axial stop portions located at the outer side ends of the length direction of the support shaft, to prevent the connecting piece 500 from moving or falling off relative to the support shaft.

[0075] The connecting piece 500 includes a connecting piece body portion for connecting with the connecting piece mounting seat 330, and an extension portion extending outward relative to the connecting piece body portion, for connecting with the wind turbine generator set component. Corresponding to the support shaft on the connecting piece mounting seat 330, an arc-shaped groove 520 is formed on the lower surface of the connecting piece body portion. The connecting piece body portion can include two connecting legs, for example, the connecting piece body is formed as a U-shaped, so that the two connecting legs of the U-shaped portion are respectively located on both sides of the cylinder body 310, and are rotationally fitted with the arc-shaped support surface of the support shaft through the arc-shaped groove 520. The connecting piece 500 is supported by the connecting piece mounting seat 330 on both sides of the cylinder body 310, so that both sides of the cylinder body 310 are symmetrically stressed, avoiding tilting during lifting, and improving the stability of the support.

[0076] In addition, the positions of the arc-shaped groove and the arc-shaped support surface can be interchanged. As an example, the connecting piece mounting seat 330 has a recessed arc-shaped groove 520, and the bottom of the connecting piece 500 has a protruding arc-shaped support surface, which is supported in the arc-shaped groove 520, so that the connecting piece 500 can rotate a predetermined angle relative to the connecting piece mounting seat 330.

[0077] In addition, a limiting structure can be provided between the connecting piece 500 and the connecting piece mounting seat 330, for limiting the rotation angle of the connecting piece 500 relative to the connecting piece mounting seat 330, to avoid the connecting piece 500 rotating too much and weakening the support function of the wind turbine generator set component, or even causing the lifting device 10 to overturn. For example, a stop flat surface is provided on the connecting piece mounting seat 330, so that when the connecting piece 500 rotates to a set angle, it abuts against the stop flat surface to prevent further rotation of the connecting piece 500.

[0078] Further, in order to improve the lifting stability of the lifting device 10, as shown in Figure 4 and Figure 5 The lifting device 10 further includes a locking structure 350 for locking the connecting piece 500 relative to the lifting portion 300. After the connecting piece 500 is connected with the wind turbine generator set component and rotates a certain angle relative to the lifting portion 300 under the weight of the wind turbine generator set component, the locking structure 350 can be used to lock the connecting piece 500 relative to the lifting portion 300, to prevent the connecting piece 500 from shaking relative to the lifting portion 300, and also to prevent the connecting piece 500 from continuing to rotate, thereby improving the lifting stability of the lifting device 10.

[0079] As an example, as shown in Figure 4 and Figure 5 The locking structure 350 is arranged on the side of the cylinder 310 opposite to the extension of the connecting piece 500. By using the principle of leverage, an opposite force is applied to the connecting piece 500 to prevent the extension of the connecting piece 500 from continuing to rotate downward, so that the connecting piece 500 is kept in a stable position. Of course, the locking structure 350 can also be arranged on the same side as the extension of the connecting piece 500 if space permits, which is not specifically limited here.

[0080] In the embodiments of the present application, the locking structure 350 includes a locking bolt 351 and a nut 352, the first end of the locking bolt 351 is connected to one of the connecting piece 500 and the connecting piece mounting seat 330, the other of the connecting piece 500 and the connecting piece mounting seat 330 is provided with a locking through hole, and the second end of the locking bolt 351 passes through the locking through hole and is combined with the nut 352. The locking structure 350 has a simple structure and is easy to operate.

[0081] Taking the case where the first end of the locking bolt 351 is connected to the connecting piece mounting seat 330 as an example, the first end of the locking bolt 351 can be rotatably connected to the connecting piece mounting seat 330, and at this time the locking through hole is formed on the connecting piece 500. During the rotation of the connecting piece 500, the locking through hole will also rotate or move by a certain angle relative to the locking bolt 351, and it is difficult to align with each other. In the embodiments of the present application, by arranging the locking bolt 351 to be rotatable, the angle of the locking bolt 351 can be adaptively adjusted with the change of the angle of the locking through hole, which facilitates the cooperation of the locking bolt 351 with the locking through hole and prevents the locking bolt 351 from interfering with the locking through hole during the rotation of the connecting piece 500.

[0082] The specific structure of the locking structure 350 can be various, and is not limited to the above example, as long as it can lock the connecting piece 500 relative to the lifting part 300.

[0083] In some embodiments, as shown in Figure 1 The lifting device 10 further includes a support 200 arranged on the base 100, and the support 200 extends upward from the base 100 to form a support structure. In some embodiments, the support 200 can guide the up-and-down movement of the connecting piece 500, so that the lifting part 300 moves up and down along a stable movement path, thereby ensuring the stability during the lifting or falling of the wind turbine generator component.

[0084] Further, as shown in Figure 1 and Figure 2As shown, a guide rail 210 is provided on the bracket 200, and the guide rail 210 extends in the vertical direction. A guide part 340 is provided on the lifting part 300 or the connecting member 500, which cooperates with the guide rail 210. During the process of the lifting part 300 raising and lowering the connecting member 500, the guide part can move along the predetermined guide rail 210.

[0085] As an example, such as Figure 1 , Figure 2 , Figure 4 and Figure 5 As shown, the guide part 340 is a guide roller, which is set on the lifting part 300 or on the connecting member mounting base 330. During the operation of the lifting part 300, the guide roller rolls along the guide rail. The rolling contact method results in low friction and low resistance.

[0086] As an example, the guide rail 210 can be a guide groove, in which the guide rollers move to prevent wobbling during the guiding process. The guide rail 210 can also be formed as a guide rib, in which the guide rollers can be arranged in pairs, clamped on both sides of the guide rail 210, and move along the guide rail 210 to ensure stability during movement.

[0087] As an optional example, the guide portion 340 is a guide bump or a ball, and the guide track 210 is a guide groove extending in the vertical direction. The guide portion 340 extends into the guide groove and can move along the guide groove.

[0088] The structure of the guide rail 210 and the guide section 340 can be varied and is not limited to the example above.

[0089] Furthermore, such as Figure 1 As shown, a top plate 240 is provided on the support 200. The top plate 240 enhances the support strength of the support 200. A through hole 241 is provided on the top plate 240, through which the cylinder 310 can pass when moving upwards and be supported by the top plate 240. The through hole 241 prevents interference between the cylinder 310 of the lifting section 300 and the top plate 240, thus increasing the movement path of the cylinder 310 and expanding the lifting stroke. Furthermore, the through hole 241 also serves to limit the movement of the cylinder 310, preventing it from tilting significantly.

[0090] According to the embodiments of the present application, the lifting device 10 further comprises an anti-toppling outrigger 600 for assisting the support of the lifting device 10. As an example, a first end of the anti-toppling outrigger 600 is movably connected with the support 200, and a second end of the anti-toppling outrigger 600 is capable of being supported on the ground at a position separated from the base 100 by a predetermined distance. After the connecting member 500 is connected with the wind turbine component, the anti-toppling outrigger 600 can be flipped to be supported on the ground to assist the support of the lifting device 10 and prevent the lifting device 10 from toppling. Of course, the anti-toppling outrigger 600 can also be supported on the ground before the connecting member 500 is connected with the wind turbine. Therefore, the supporting timing of the anti-toppling outrigger 600 can be adjusted according to actual needs.

[0091] Further, as shown in Figure 1 , the anti-toppling outrigger 600 is arranged on the same side of the support 200 as the connecting member 500. Since the connecting member 500 bears a large weight, if the lifting device 10 tilts, it will generally tilt towards the direction of the wind turbine component, i.e. the direction of the connecting member 500. Therefore, the anti-toppling outrigger 600 is arranged on the side of the support 200 facing the connecting member 500, which can have a supporting effect.

[0092] Of course, the anti-toppling outrigger 600 is not limited to being arranged at the above-mentioned position. The anti-toppling outrigger 600 can also be arranged around the support 200, or on opposite sides of the support 200, etc. The number of anti-toppling outriggers 600 can be one or at least two.

[0093] In the embodiments of the present application, the anti-toppling outrigger 600 is arranged in two, symmetrically on both sides of the connecting member 500. As shown in Figure 1 , the two anti-toppling outriggers 600 are distributed on the side of the support 200 facing the connecting member 500, and are symmetrically distributed relative to the connecting member 500.

[0094] In some embodiments, the anti-toppling outrigger 600 is rotatable with the support 200 between a first position and a second position. In the first position, the anti-toppling outrigger 600 can be accommodated on the support 200, and in the second position, the anti-toppling outrigger 600 can be supported on the ground at a position separated from the base 100 by a predetermined distance. The anti-toppling outrigger 600 can also be locked in the first position and the second position, respectively.

[0095] As shown in Figure 1 and Figure 8As shown, the anti-toppling leg 600 is provided with a first shaft hole 610, and the bracket 200 is provided with a second shaft hole, the first shaft hole 610 can be aligned with the second shaft hole, and the shaft is inserted into the first shaft hole 610 and the second shaft hole, so that the anti-toppling leg 600 can rotate around the shaft. In order to facilitate the formation of the second shaft hole, a pair of connecting ears 220 can be formed on the bracket 200, and the second shaft hole is formed on the connecting ear 220, and the anti-toppling leg 600 is supported from both sides.

[0096] The anti-toppling leg 600 is also provided with a first pin hole 620 and a second pin hole 630, and the first shaft hole 610 is located between the first pin hole 620 and the second pin hole 630. The position above the second shaft hole is also provided with a third pin hole, and the distance between the second shaft hole and the third pin hole, the distance between the first shaft hole 610 and the first pin hole 620, and the distance between the first shaft hole 610 and the second pin hole 630 are all the same. In the first position, that is, when the anti-toppling leg 600 is in the storage state, the first pin hole 620 and the third pin hole are aligned and locked by the pin shaft 230, which can prevent the anti-toppling leg 600 from rotating. After pulling out the pin shaft 230, the anti-toppling leg 600 can be rotated to the second position, so that the anti-toppling leg 600 is placed on the ground and is in the supporting state. At this time, the second pin hole 630 is aligned with the third pin hole, and the above-mentioned pin shaft 230 can also be inserted into the second pin hole 630 and the third pin hole to limit the rotation of the anti-toppling leg 600, thereby ensuring that the anti-toppling leg 600 is stably supported on the ground.

[0097] In some embodiments, as shown in Figure 3 As shown, the lifting device 10 further comprises a plurality of telescopic rollers 110, which are arranged in the base 100 and can be extended relative to the lower surface of the base 100 to rollingly support the lifting device 10. When it is necessary to move the lifting device 10, the telescopic rollers 110 can be extended from the lower surface of the base 100. After the telescopic rollers 110 are extended, the operator can push the lifting device 10 to move the position, which is convenient and labor-saving.

[0098] As an example, each telescopic roller 110 is mounted on a telescopic cylinder, and the lifting device 10 further comprises a roller telescopic control unit, which comprises a gas pressure pump 130 or a hydraulic pump, and the roller telescopic control unit is connected with each telescopic cylinder to drive the telescopic rollers 110 to be synchronously extended or retracted relative to the base 100. In the case where the lifting device 10 comprises a hydraulic servo pump station, the roller telescopic control unit can adopt a hydraulic pump to drive the telescopic rollers by using the hydraulic oil of the hydraulic servo pump station.

[0099] Of course, a gas pressure cylinder can also be used to drive the telescopic rollers 110 to extend or retract by manual driving. Therefore, the implementation mode of the roller telescopic control unit is not limited to the above example.

[0100] The telescopic rollers 110 can be arranged in three, respectively arranged in different positions of the base 100. In addition, at least one of the plurality of telescopic rollers 110 can be a universal wheel 120, which facilitates changing the moving direction of the lifting device 10.

[0101] The telescopic rollers 110 can be arranged in three, respectively arranged in different positions of the base 100. In addition, at least one of the plurality of telescopic rollers 110 can be a universal wheel 120, which facilitates changing the moving direction of the lifting device 10.

[0102] Further, in some embodiments, as shown in Figure 1 、 Figure 2 and Figure 4 The lifting device 10 further comprises a controller 910, a displacement sensor 920 and a pressure sensor 930. The displacement sensor 920 is used to collect the position information of the connecting piece 500, and the pressure sensor 930 is used to collect the pressure information borne by the connecting piece 500. The controller 910 controls the lifting operation of the lifting part 300 according to the position information and the pressure information. The control is more accurate and safe.

[0103] The embodiment of the application further provides a component lifting method for lifting a wind turbine generator component. The component lifting method uses the lifting device 10 in the above-mentioned embodiment and comprises the following steps: placing at least two lifting devices 10 on both sides of the wind turbine generator component respectively, connecting the connecting piece 500 with the wind turbine generator component; driving the connecting piece 500 to move upward or downward relative to the base 100 by the lifting part 300, so as to make the wind turbine generator component ascend or descend to a predetermined height. According to the embodiment of the application, the connection between the connecting piece 500 and the wind turbine generator component can be realized in various ways, for example, the connecting piece 500 is directly connected with the wind turbine generator component, or is connected with the wind turbine generator component through an adapter, or is connected with a load-bearing part 30 supporting the wind turbine generator component.

[0104] The embodiment of the application lifts the wind turbine generator component by means of the lifting device 10, instead of lifting the wind turbine generator component by a crane. The risk of high-altitude operation can be avoided, the large space occupied by the crane can be eliminated, the cost of renting the crane can be saved, and the cost can be saved.

[0105] Figure 9 The application example of the lifting transmission chain 20 is shown. Two lifting devices 10 are arranged on both sides of the transmission chain 20, and the transmission chain 20 is connected from both sides. Since the transmission chain 20 is a symmetrical structure, the four lifting devices 10 are arranged in pairs and symmetrically with respect to each other, so that the forces on both sides are consistent, which is beneficial to maintaining balance.

[0106] In Figure 9 In the example shown, the transmission chain 20 is arranged on the carrier 30, and the connecting member 500 is connected to the transmission chain 20 by being connected to the carrier 30 supporting the transmission chain 20, so as to support and lift the transmission chain 20.

[0107] According to the embodiment of the present application, in the case where the lifting device 10 further comprises the connecting member mounting seat 330 and the locking structure 350, the component lifting method according to the embodiment of the present application further comprises the step of locking the connecting member 500, specifically, after the wind turbine generator component is supported by the connecting member 500 and the connecting member 500 is rotated by a predetermined angle relative to the connecting member mounting seat 330, the connecting member 500 is locked relative to the lifting part 300 by the locking structure 350.

[0108] According to the embodiment of the present application, in the case where the lifting device 10 further comprises the anti-toppling outrigger 600, the lifting method according to the embodiment of the present application further comprises the step of auxiliary support by the anti-toppling outrigger 600. For example, after the connecting member 500 is lifted to a predetermined height, the anti-toppling outrigger 600 is rotated to a supporting position according to the inclination degree of the lifting part 300, so that one end of the anti-toppling outrigger 600 can be supported on the ground at a position separated from the base 100 by a predetermined distance, which can prevent the lifting device 10 from toppling.

[0109] Of course, in other examples, the anti-toppling outrigger 600 can also be rotated to the supporting position in advance before or after the connecting member 500 is connected to the wind turbine generator component.

[0110] The lifting device 10 further comprises a controller 910, a displacement sensor 920 and a pressure sensor 930, in the process of controlling the lifting device 10, the position information of the connecting member 500 is collected by the displacement sensor 920, the pressure information borne by the connecting member 500 is collected by the pressure sensor 930, and the controller 910 controls the synchronous operation of at least two lifting devices 10 according to the position information and the pressure information.

[0111] As an example, the hydraulic cylinder and the servo hydraulic pump station 400 can be closed-loop controlled, according to the computer control algorithm, the theoretical required flow is calculated, the system automatically changes the motor speed to output the corresponding required flow value, so that the oil supply is continuous during the whole jacking process, the hydraulic cylinder runs smoothly, and the vibration caused by intermittent oil supply is avoided, and the control precision is high. The flow output of the lifting device 10 is closed-loop controlled, so there is no long-term overflow, which ensures that the system will not be affected by the heat dissipation problem to affect the overall control precision, and also plays an energy-saving effect.

[0112] According to the embodiment of the present application, further, the component lifting method further comprises the following steps: after the wind turbine component is lifted to the predetermined height, the transport vehicle is driven to be under the wind turbine component; the lifting device 10 is controlled to make the wind turbine component fall on the vehicle; and the lifting device 10 is removed. The load carrying is realized by moving the transport vehicle to be under the wind turbine component, which is convenient and efficient in operation and high in transport efficiency.

[0113] Specifically, after the wind turbine component is lifted to the specified height, the transport vehicle is moved to be under the wind turbine component, and then the at least two lifting devices 10 are controlled to synchronously lower the wind turbine component to place the wind turbine component on the transport vehicle, thereby realizing the carrying of the wind turbine component.

[0114] According to the embodiment of the present application, the lifting device 10 is simple in structure, small in size and small in space occupation, and moreover, the carrying process does not need high-altitude operation, which is high in safety. Moreover, the lifting device 10 does not need to be additionally equipped with a lifting tool matched with the component to be hoisted, thereby saving cost.

[0115] The lifting device 10 can be used to lift different components of the wind turbine, including but not limited to the wind turbine main shaft, the wind turbine nacelle and the wind turbine impeller. Moreover, the lifting device 10 according to the present application can also be used to lift components of other products, as long as corresponding connectors are replaced or connected, which has good universality.

[0116] Although the specific details of the embodiments of the present application have been described in detail with reference to the drawings, the protection scope of the present application is not limited by the description, and the corresponding modifications and variations can be made by those skilled in the art without departing from the principles of the present application, and these modifications and variations will fall within the protection scope of the present application.

Claims

1. A lifting device for lifting or lowering a wind turbine component to a predetermined height, characterized in that, The lifting device comprises: a base (100); a support (200) fixedly arranged on the base (100); a lifting part (300) mounted on the base (100); a connecting piece (500) arranged on the lifting part (300), wherein the lifting part (300) can drive the connecting piece (500) to move up and down, the connecting piece (500) is used for connecting with the wind turbine component and bearing the weight of the wind turbine component, and the support can guide the up and down movement of the lifting part (300).

2. The lifting device of claim 1, wherein, The lifting device further comprises an anti-toppling support leg (600) movably connected with the support (200) and capable of switching between a first position and a second position, in the first position, the anti-toppling support leg (600) is accommodated on the support (200), and in the second position, the anti-toppling support leg (600) can be supported on the ground at a position separated from the base (100) by a predetermined distance.

3. The lifting device of claim 2, wherein, The anti-toppling support leg (600) and the connecting piece (500) are arranged on the same side of the support (200) and can be respectively locked in the first position and the second position.

4. The lift device of claim 3, wherein, A first shaft hole (610) is arranged at a first end of the anti-toppling support leg (600), and the first end of the anti-toppling support leg is rotatably connected with the support (200) through a rotating shaft, a first pin hole (620) and a second pin hole (630) are arranged at the first end of the anti-toppling support leg, the first pin hole (620) and the second pin hole (630) are respectively located on two sides of the first shaft hole (610), a third pin hole and a pin shaft (230) capable of being inserted into the third pin hole are arranged on the support (200), in the first position, the first pin hole (620) is aligned with the third pin hole and is locked through the pin shaft (230), and in the second position, the second pin hole (630) is aligned with the third pin hole and is locked through the pin shaft (230).

5. The lift device of claim 1, wherein, The lifting device further comprises: a driving part connected with the lifting part (300) and used for driving the lifting part (300) to move up and down with the connecting piece (500).

6. The lifting device of claim 5, wherein, The lifting part (300) is a hydraulic cylinder or an air cylinder, comprising a cylinder body (310) and a piston rod (320) capable of extending and retracting relative to the cylinder body (310), the piston rod (320) is fixedly connected with the base (100), and the connecting piece (500) is connected with the cylinder body (310).

7. The lifting device of claim 6, wherein, The lifting part (300) is a hydraulic cylinder, and the driving part comprises a servo hydraulic pump station (400) arranged on the base (100) and used for controlling the lifting of the cylinder body (310).

8. The lift device of claim 7, wherein, The driving part further comprises a manual pump (800) connected with an oil tank of the servo hydraulic pump station and the hydraulic cylinder and capable of driving the lifting of the cylinder body (310).

9. The lifting device according to any one of claims 1-8, characterized in that, The lifting device further comprises a plurality of telescopic rollers (110) arranged in the base (100) and capable of extending relative to the lower surface of the base (100) to provide rolling support for the lifting device.

10. The lift device of claim 9, wherein, Each of the telescopic rollers (110) is mounted on a telescopic cylinder, and the lifting device further comprises a roller telescopic control unit comprising a gas pressure pump or a hydraulic pump, which is connected to each of the telescopic cylinders to drive the telescopic rollers (110) to extend or retract relative to the base.

11. The lifting device according to any one of claims 1-8, characterized in that, The connecting piece (500) is provided with a locking socket (510) capable of being connected with the wind turbine component or a load-bearing part for supporting the wind turbine component, and the lifting device further comprises an anti-extraction pin (250) placed on the support (200) and capable of being locked by the anti-extraction pin (250) after the locking socket (510) is aligned with a socket on the load-bearing part.

12. The lift device of any one of claims 1-8, wherein, The lifting device further comprises an adapter capable of being detachably connected with the connecting piece (500) to connect with the wind turbine component through the adapter.

13. The lift device of any one of claims 6-8, wherein, The support (200) is provided with a top plate (240) provided with a through hole (241) through which the cylinder body (310) can pass and be supported by the top plate (240) when the cylinder body (310) moves upward.

14. The lift device of any one of claims 5-8, wherein, The lifting device further comprises a controller (910), a displacement sensor (920) and a pressure sensor (930), the displacement sensor (920) is used to collect position information of the connecting piece (500), the pressure sensor (930) is used to collect pressure information borne by the connecting piece (500), and the controller (910) controls the driving part according to the position information and the pressure information, thereby controlling the lifting operation of the lifting part (300).

15. The lift device of claim 7, wherein, The lifting device further comprises a balance valve (700) mounted between the servo hydraulic pump station and the oil cavity of the cylinder body (310) to limit the position where the cylinder body (310) stops.

16. The lift device of any one of claims 1-8, wherein, The connecting piece (500) is rotatably connected with the lifting part (300) and capable of rotating downward by a predetermined angle under the weight of the wind turbine component.

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