Fan tower drum lifting appliance

Abstract

The utility model relates to the technical field of lifting appliances, and discloses a fan tower drum lifting appliance which comprises a seat body, a supporting piece, a fastening piece and a lifting piece, two first mounting grooves are formed in the top of the seat body, two second mounting grooves are formed in the bottom of the seat body, the first mounting grooves are communicated with the second mounting grooves, and the width of the first mounting grooves is larger than that of the second mounting grooves. The at least two supporting pieces are installed in the first installation grooves respectively, the supporting pieces can slide in the first installation grooves, first installation holes are formed in the supporting pieces, the fastening pieces are installed in the first installation holes, one ends of the fastening pieces penetrate through the second installation grooves, and the hoisting piece is arranged at the top of the base body. According to the utility model, the supporting piece is movably mounted in the first mounting groove in the seat body, so that the supporting piece can provide more anti-shearing load for the fastening piece and can participate in load distribution in the erecting process of hoisting the tower drum of the fan, the hoisting stability of the tower drum is improved, the damage condition of local stress concentration of the tower drum during hoisting is avoided, and the hoisting safety of the fan tower drum is improved. Therefore, the safety during hoisting is ensured.

Description

Technical Field

[0001] This utility model relates to the field of lifting equipment technology, specifically to wind turbine tower lifting equipment. Background Technology

[0002] The wind turbine tower is the connecting component between the wind turbine and the foundation ring. It is usually a complete cylindrical structure. It is the supporting structure of the wind turbine, bearing the weight of the nacelle, blades, etc. Through the support and fixation of the tower, the wind turbine can operate stably at high altitude, thereby capturing more wind energy and converting it into electrical energy.

[0003] The tower sections are typically connected by flanges, which are used to fasten the sections together with flange rings and bolts. After the tower is transported to the construction site, it is lifted and installed using lifting equipment. The horizontally placed tower sections are first gradually erected and kept vertical. Then, the tower is leveled, its verticality is measured, and all bolts are tightened.

[0004] In existing technologies, wind turbine tower lifting devices typically have a base with two connecting bolts and lifting components. One of the connecting bolts uses a slotted hole for horizontal and vertical adjustment. This method allows for rapid connection; only one bolt needs to be used as a reference on-site, and the other bolt can be adjusted to quickly tighten the lifting device. However, this method limits the number of bolts that can be connected to the lifting device, concentrating the lifting force on the tower in a small area. This uneven load distribution on the connecting bolts can easily lead to failure of the lifting device and slings, increasing safety hazards. Utility Model Content

[0005] In view of this, the present invention provides a wind turbine tower lifting tool to solve the problem that the uneven load borne by the connecting bolts of the existing wind turbine tower lifting tool can easily cause the lifting tool and slings to fail, thus increasing safety hazards.

[0006] This utility model provides a wind turbine tower lifting device, including a base, support members, fasteners, and lifting components. The top of the base is provided with two first mounting slots, and the bottom of the base is provided with two second mounting slots. The first mounting slots are connected to the second mounting slots. The width of the first mounting slot is greater than that of the second mounting slot. At least two support members are respectively installed in the first mounting slots. The support members can slide within the first mounting slots. The support members are provided with first mounting holes. The fasteners are installed in the first mounting holes. One end of the fastener passes through the second mounting slot and is suitable for connection with the wind turbine tower. The lifting components are located on the top of the base and between the two first mounting slots.

[0007] Beneficial effects: In this utility model, the support component is movably installed in the first mounting groove on the base body. During the erection process of hoisting the wind turbine tower, the support component can provide more shear load resistance to the fasteners and participate in load distribution, which improves the stability of the tower hoisting. At the same time, it avoids damage caused by localized stress concentration during tower hoisting, thereby ensuring the safety during hoisting.

[0008] In one alternative embodiment, the wind turbine tower lifting device further includes at least one gasket, which is detachably filled between the sidewall of the first mounting groove and the support member along the width direction of the first mounting groove.

[0009] Beneficial effects: The combination of shims and support components in this utility model can provide more shear load resistance to the fasteners, participate in load distribution, improve the stability of tower hoisting, and avoid damage caused by localized stress concentration during tower hoisting. At the same time, by setting the first mounting hole on the support component off-axis from the central axis, the fasteners can have different offsets, which can achieve preliminary coarse adjustment, and then fine adjustment can be achieved with a small number of shims.

[0010] In one alternative embodiment, the wind turbine tower hoist also includes a cover plate disposed in a first mounting groove, located on top of the support and the gasket. The cover plate has a second mounting hole, and a fastener is inserted and installed in the second mounting hole. The second mounting hole and the fastener are clearance-fitted in the width direction of the cover plate.

[0011] Beneficial effects: In this utility model, the cover plate can press the support and the gasket together, avoiding the separation of the gasket and the support.

[0012] In one alternative embodiment, the side of the seat body is provided with a slot, the side of the support member is provided with a protrusion, the gasket is provided with a notch, the protrusion is movably installed in the slot, and the protrusion passes through the notch.

[0013] Beneficial effects: The present invention provides a protrusion on the side of the support member. When the support member is moved, the protrusion engages with the notch on the gasket, allowing the gasket to move together with the support member.

[0014] In one optional embodiment, the base is provided with a third mounting hole, which is located between two first mounting slots. The support shaft is installed in the third mounting hole, and the lifting component is connected to the support shaft.

[0015] Beneficial effects: This utility model connects the lifting component to the support shaft, which allows the lifting component to rotate with the tower's posture during the hoisting process of the wind turbine tower.

[0016] In one alternative embodiment, the support shaft includes a flange section and a shaft section, the shaft section passing through a third mounting hole, and the lifting component being detachably connected to the end of the shaft section away from the flange section.

[0017] In one alternative embodiment, the wind turbine tower hoist further includes a first bearing and a second bearing, wherein the first bearing is disposed between the third mounting hole and the support shaft, and the second bearing is disposed between the third mounting hole and the support shaft.

[0018] In one alternative embodiment, the end of the shaft segment away from the flange segment is provided with an external thread, and the lifting component is provided with an internal thread, with the shaft segment and the lifting component being threadedly connected.

[0019] Beneficial effects: By setting a first bearing and a second bearing on the support shaft, the friction between the support shaft and the third mounting hole during rotation can be reduced.

[0020] In one alternative embodiment, the bottom of the support member and the inner bottom surface of the first mounting groove are both provided with teeth.

[0021] Beneficial effects: When the support member is pressed against the seat, the toothed pattern can increase the friction with the first mounting groove, providing a larger load in the sliding direction.

[0022] In one alternative embodiment, the angle between the extension directions of the two first mounting slots is less than 180°, and two support members are installed in each first mounting slot. Attached Figure Description

[0023] To more clearly illustrate the specific embodiments of this utility model or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0024] Figure 1 This is a three-dimensional structural schematic diagram of a wind turbine tower lifting device according to an embodiment of the present utility model;

[0025] Figure 2 This is a front view of a wind turbine tower lifting device according to an embodiment of the present utility model;

[0026] Figure 3 This is a top view of a wind turbine tower lifting device according to an embodiment of the present utility model;

[0027] Figure 4 for Figure 3 Sectional view of AA;

[0028] Figure 5 This is a three-dimensional structural diagram of the support components, gaskets, and cover plates in a wind turbine tower lifting device according to an embodiment of the present utility model.

[0029] Explanation of reference numerals in the attached figures:

[0030] 1. Base; 101. First mounting slot; 102. Second mounting slot; 103. Slot hole;

[0031] 2. Support component; 201. Protrusion; 202. Toothed pattern;

[0032] 3. Fasteners;

[0033] 4. Lifting components; 401. Screw sleeve; 402. Lifting ring;

[0034] 5. Gasket; 501. Notch;

[0035] 6. Cover plate; 601. Second mounting hole;

[0036] 7. Support shaft; 701. Shaft section; 702. Flange section; 703. Flange;

[0037] 8. First bearing;

[0038] 9. Second bearing 。 Detailed Implementation

[0039] 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. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0040] The following is combined Figures 1 to 5 The following describes embodiments of the present invention.

[0041] According to embodiments of the present invention, such as Figures 1 to 5 As shown, a wind turbine tower lifting device is provided, including a base 1, a support member 2, a fastener 3, and a lifting member 4. The base 1 has two first mounting slots 101 on its top and two second mounting slots 102 on its bottom. The first mounting slots 101 and the second mounting slots 102 are connected. The width of the first mounting slot 101 is greater than that of the second mounting slot 102. At least two support members 2 are respectively installed in the first mounting slots 101. The support members 2 can slide within the first mounting slots 101. The support members 2 have first mounting holes. The fasteners 3 are installed in the first mounting holes. One end of the fasteners 3 passes through the second mounting slots 102 and is suitable for connection with the wind turbine tower. The lifting member 4 is located on the top of the base 1, between the two first mounting slots 101.

[0042] Specifically, such as Figures 1 to 4As shown, in this embodiment, the base 1 includes two strip-shaped structures. The cross-section of each strip-shaped structure is rectangular, and the longitudinal section is trapezoidal. The two strip-shaped structures are connected at one end and are arranged at an obtuse angle. In each strip-shaped structure, a first mounting groove 101 extends from the top to the middle of the strip-shaped structure, and a second mounting groove 102 extends from the bottom of the first mounting groove 101 to penetrate the bottom of the strip-shaped structure. The size of the first mounting groove 101 is larger than that of the second mounting groove 102.

[0043] In this embodiment, as Figure 4 and Figure 5 As shown, the support member 2 is cubic in shape and its size matches the first mounting groove 101. Each first mounting groove 101 is provided with several support members 2. The support member 2 is provided with a first mounting hole, which matches the second mounting groove 102. The fastener 3 passes through the first mounting hole, and the lower end of the fastener 3 passes through the second mounting groove 102 and extends out of the bottom of the base body 1 for connection with the wind turbine tower.

[0044] In this embodiment, the number of support members 2 is not specifically limited. For example, in this embodiment, there are a total of four support members 2, and two support members 2 are movably arranged in each first mounting groove 101.

[0045] In this embodiment, the fastener 3 is not specifically limited. For example, the fastener 3 is a bolt with a nut. In this embodiment, there are four bolts, and each bolt is installed in the first mounting hole of the support 2.

[0046] In this embodiment, when hoisting the wind turbine tower, the nut is first removed from the fastener 3, and the support member 2 in each first mounting slot 101 is moved so that each fastener 3 is aligned with the bolt hole on the end flange of the wind turbine tower. Then, the fastener 3 is inserted into the bolt hole, and the nut is securely connected to the fastener 3, allowing the wind turbine tower to be hoisted. In this invention, the support member 2 is movably installed in the first mounting slot 101 on the base 1. During the erection process of hoisting the wind turbine tower, the support member 2 can provide more shear load resistance to the fastener 3, participate in load distribution, improve the stability of the tower hoisting, and avoid damage caused by localized stress concentration during tower hoisting, thereby ensuring the safety during hoisting.

[0047] In one embodiment, such as Figure 1 , Figure 3 and Figure 5 As shown, the wind turbine tower lifting device also includes at least one gasket 5, which is detachably filled between the side wall of the first mounting groove 101 and the support member 2 along the width direction of the first mounting groove 101.

[0048] Specifically, in this embodiment, the size of the support member 2 is slightly smaller than that of the first mounting groove 101. There is a gap between the side of the support member 2 and the side wall of the first mounting groove 101. The gasket 5 has the same size as the side of the support member 2. Several gaskets 5 are detachably set in the gap between the support member 2 and the inner wall of the first mounting groove 101. Two fasteners 3 can be installed in any order. After the two fasteners 3 are fixed in front, the position of the seat 1 is stable. When it is necessary to fix the third or more fasteners 3 to hoist the wind turbine tower, each support member 2 should be moved to a suitable position in the first mounting groove 101 so that each fastener 3 is aligned with the bolt hole on the end flange of the wind turbine tower. Then, several gaskets 5 are filled in the gap between the first mounting groove 101 and the support member 2, and then the fasteners 3 are inserted into the bolt holes.

[0049] In this embodiment, the number and thickness of the shims 5 are not specifically limited. The shims 5 can be adjusted by changing the thickness of a single shim 5, adjusting the number of shims 5 of the same thickness, or a combination of the two methods. When adjusting the width of the gap on both sides in response to the increase or decrease, the total thickness of the shims 5 distributed in the gap on both sides is adjusted to be different, thereby limiting the different positions of the support member 2 in width and providing reliable support. For example, in this embodiment, the shims 5 can be set to multiple shims 5 of different thicknesses to meet the filling of the gap; the protrusion 201 passing through the notch 501 can prevent the shims 5 from excessively moving along their length and detaching from the support member 2. Of course, in other examples, in the original state, the gap on one side can be zero. By subtracting the shims 5 in the gap on the other side and loading them there, adjustment can also be achieved.

[0050] In one embodiment, the first mounting hole on the support member 2 is offset from the central axis, allowing the support member 2 to be offset to the left or right within the first mounting groove 101 by different amounts. This enables initial width adjustment, followed by fine-tuning and locking the position using a small number of adjusting shims 5. For example, if the first mounting hole on the support member 2 is close to the right side, when the right side of the support member 2 is closer to the center of the tower, the connecting bolts move closer to the center; when the right side of the support member 2 is away from the center of the tower, the distance between the connecting bolts and the center increases.

[0051] In this invention, the combination of shims 5 and support members 2 can provide more shear load resistance to fasteners 3, participate in load distribution, improve the stability of tower hoisting, and avoid damage caused by localized stress concentration during tower hoisting. At the same time, by setting the first mounting hole on the support member 2 off from the central axis, the fasteners 3 have different offsets, which can achieve preliminary coarse adjustment, and then fine adjustment can be achieved with a smaller number of shims 5.

[0052] In one embodiment, each first mounting slot 101 contains a support member 2. The installation method is as follows: after one fastener 3 is connected to the wind turbine tower, the second fastener 3 is installed by adjusting the other support member 2 to slide relative to the first mounting slot 101 and adjusting the corresponding shim 5. The difference from the above installation method is that this method does not require swinging the base 1 to install the second fastener 3. In other embodiments, the connection of more than two fasteners 3 is also applicable. After two or more fasteners 3 are positioned in the first mounting slot 101 on one side of the base 1, the remaining fasteners 3 in the first mounting slot 101 on the other side can be independently adjusted into position, and the load can be distributed to a greater extent.

[0053] The wind turbine tower lifting tool provided by this utility model is reliable for lifting. Each fastener 3 can bear the load relatively evenly. It is particularly suitable for lifting situations where multiple fasteners 3 are connected. It can adapt to lifting in different tower postures and can switch lifting postures in different postures. It can avoid damage to the tower and lifting tool and reduce safety hazards.

[0054] In one embodiment, such as Figures 1 to 5 As shown, the wind turbine tower hoist also includes a cover plate 6. The cover plate 6 is located in the first mounting groove 101, on top of the support member 2 and the gasket 5. The cover plate 6 is provided with a second mounting hole 601. The fastener 3 is installed through the second mounting hole 601. The second mounting hole 601 and the fastener 3 are clearance-fitted in the width direction of the cover plate 6.

[0055] Specifically, in this embodiment, the cover plate 6 is rectangular, and the size of the cover plate 6 is larger than that of the support member 2. Its width is the same as the width of the first mounting groove 101. The cover plate 6 is provided with a second mounting hole 601, which is a strip-shaped hole that extends along the length direction of the first mounting hole so that the cover plate 6 can move and adjust within the first mounting groove 101.

[0056] In this embodiment, the second mounting hole 601 on the cover plate 6 is not specifically limited. For example, in this embodiment, the second mounting hole 601 can be an elliptical hole or a strip hole, with a width slightly larger than the diameter of the fastener 3, so that there is a certain gap between the second mounting hole 601 and the fastener 3.

[0057] In this utility model, the cover plate 6 can press the support member 2 and the gasket 5 together, preventing the gasket 5 from being misaligned or separated from the support member 2.

[0058] In one embodiment, such as Figure 1 , Figure 2 and Figure 4As shown, the side of the seat 1 is provided with a slot 103, the side of the support member 2 is provided with a protrusion 201, and the gasket 5 is provided with a notch 501. The protrusion 201 is movably installed in the slot 103 and passes through the notch 501.

[0059] Specifically, in this embodiment, the side of the seat 1 is provided with a strip hole 103 extending along the length direction, and the side of the support member 2 is provided with a cylindrical protrusion 201 perpendicular to the side wall. When the support member 2 moves in the first mounting groove 101, the protrusion 201 slides in the strip hole 103. The gasket 5 is provided with a notch 501 at the position corresponding to the protrusion 201 below. When the gasket 5 is filled in the gap, the protrusion 201 passes through the notch 501.

[0060] This utility model provides a protrusion 201 on the side of the support member 2. When the support member 2 is moved, the protrusion 201 engages with the notch 501 on the pad 5, so that the pad 5 can move together with the support member 2, thus stabilizing the relative position of the two.

[0061] In one embodiment, such as Figure 4 As shown, the base 1 is provided with a third mounting hole, which is located between two first mounting slots 101. The support shaft 7 is installed in the third mounting hole, and the lifting component 4 is connected to the support shaft 7.

[0062] Specifically, in this embodiment, the base 1 is provided with a third mounting hole that runs from top to bottom. The third mounting hole is located between two first mounting slots 101. The support shaft 7 is rotatably installed in the third mounting hole, and the lifting component 4 is connected to the top of the support shaft 7.

[0063] This utility model connects the lifting component 4 to the support shaft, which allows the lifting component 4 to rotate with the posture of the tower during the hoisting of the wind turbine tower.

[0064] In one embodiment, such as Figure 4 As shown, the support shaft 7 includes a flange section 702 and a shaft section 701. The shaft section 701 passes through the third mounting hole, and the lifting member 4 is detachably connected to the end of the shaft section 701 away from the flange section 702.

[0065] Specifically, in this embodiment, the support shaft 7 is cylindrical, with a shaft segment 701 at the top and a flange segment 702 at the bottom. A flange 703 is provided at the bottom of the flange segment 702, and the outer diameter of the flange 703 is larger than the outer diameter of the shaft segment 701. The flange 703 abuts against the bottom of the base 1. In this embodiment, the third mounting hole is located on one side of the bottom of the base 1 and has a countersunk hole. The flange 703 is engaged in the countersunk hole, allowing the support shaft 7 to be flush with the bottom of the base 1.

[0066] In one embodiment, such as Figure 4 As shown, the wind turbine tower lifting device also includes a first bearing 8, which is disposed between the third mounting hole and the support shaft 7.

[0067] In one embodiment, such as Figure 4 As shown, the wind turbine tower lifting device also includes a second bearing 9, which is disposed between the third mounting hole and the support shaft 7.

[0068] Specifically, in this embodiment, there are two of each of the first bearing 8 and the second bearing 9, which are symmetrically arranged on the outside of the support shaft 7 and located in the third mounting hole. The second bearing 9 is located on the outside of the first bearing 8. The upper second bearing 9 in the first mounting hole abuts against the bottom of the lifting component 4, and the lower second bearing 9 abuts against the flange 703.

[0069] In this embodiment, the first bearing 8 and the second bearing 9 are not specifically limited. For example, in this embodiment, the first bearing 8 is a radial bearing and the second bearing 9 is a thrust bearing.

[0070] In one embodiment, the end of the shaft segment 701 away from the flange segment 702 is provided with an external thread, and the lifting component 4 is provided with an internal thread, and the shaft segment 701 is threadedly connected to the lifting component 4.

[0071] Specifically, such as Figure 4 As shown, in this embodiment, the lifting component 4 includes a threaded sleeve 401 and a lifting ring 402. The lifting ring 402 is used to connect with the lifting equipment. The threaded sleeve 401 is a cylindrical tube with internal threads on its inner wall. The end of the shaft section 701 away from the flange section 702 has external threads. The shaft section 701 is threadedly connected to the threaded sleeve 401. An elliptical lifting ring 402 is installed on the top of the threaded sleeve 401. The flange section 702 is axially pressed against the second bearing 9, and the threaded sleeve 401 presses against the other second bearing 9.

[0072] This invention provides a first bearing 8 and a second bearing 9 on the support shaft 7, which can reduce the friction between the support shaft 7 and the third mounting hole during rotation.

[0073] In one embodiment, such as Figure 1 , Figure 3 and Figure 5 As shown, the bottom of the support member 2 and the inner bottom surface of the first mounting groove 101 are both provided with teeth 202.

[0074] Specifically, in this embodiment, when the support member 2 is pressed against the first mounting groove 101, the bottom teeth 202 of the support member 2 engages with the inner bottom teeth 202 of the first mounting groove 101.

[0075] When the support member 2 is pressed against the seat 1, the toothed pattern 202 can increase the friction with the first mounting groove 101, providing a larger load in the sliding direction.

[0076] In one embodiment, the angle between the extending directions of the two first mounting slots 101 is less than 180°, and two support members 2 are installed in each first mounting slot 101.

[0077] Specifically, in this embodiment, the base 1 is in the shape of a broken line, the lifting component 4 is located at the top middle position of the base 1, and two first mounting grooves 101 on the base 1 are located on both sides of the lifting component 4. The angle between the extension directions of the two first mounting grooves 101 is less than 180°. The broken line shape of the base 1 is convenient for arranging fasteners 3 on the circumference of the wind turbine tower.

[0078] In this embodiment, the working principle of the wind turbine tower lifting device is as follows:

[0079] When hoisting the wind turbine tower, select any fastener 3 in any of the first mounting slots 101, and position one of the fasteners 3 in relation to the bolt hole on the wind turbine tower. Then, select a second fastener 3 and, referring to the principle of polar coordinates, rotate the base 1 and slide the fastener 3 in the mounting slot to locate the other bolt hole on the wind turbine tower. After connecting two bolts to the base 1, the position of the entire base 1 is fixed. When connecting the third and fourth fasteners 3, it is necessary to adjust the position of the fastener 3 in the first mounting slot 101 by sliding it along the length of the first mounting slot 101 and adjusting the thickness of the shim 5 in the width direction of the first mounting slot 101. Through comprehensive adjustment in both directions, the corresponding bolt hole can be found on the mounting plane of the wind turbine tower, which is convenient for clamping. Especially under the condition of bolt processing error, a slight adjustment can find the accurate position, which is convenient for connecting more than two bolt holes.

[0080] Although embodiments of the present invention have been described in conjunction with the accompanying drawings, those skilled in the art can make various modifications and variations without departing from the spirit and scope of the present invention, and such modifications and variations all fall within the scope defined by the appended claims.

Claims

1. A wind turbine tower lifting tool, characterized in that, include: The base (1) has two first mounting slots (101) on its top and two second mounting slots (102) on its bottom. The first mounting slots (101) and the second mounting slots (102) are connected. The width of the first mounting slots (101) is greater than that of the second mounting slots (102). Support member (2), at least two of the support members (2) are respectively installed in the first mounting groove (101), the support member (2) can slide in the first mounting groove (101), and the support member (2) is provided with a first mounting hole; Fastener (3), which is installed in the first mounting hole, with one end of the fastener (3) passing through the second mounting groove (102) and is adapted to be connected to the wind turbine tower; The lifting component (4) is disposed on the top of the base (1) and located between the two first mounting slots (101).

2. The wind turbine tower lifting tool according to claim 1, characterized in that, Also includes: At least one gasket (5) is provided, which is detachably filled between the sidewall of the first mounting groove (101) and the support member (2) along the width direction of the first mounting groove (101).

3. The wind turbine tower lifting device according to claim 2, characterized in that, Also includes: A cover plate (6) is disposed in the first mounting groove (101) and located on top of the support member (2) and the gasket (5). The cover plate (6) is provided with a second mounting hole (601). The fastener (3) is installed through the second mounting hole (601). The second mounting hole (601) and the fastener (3) are clearance-fitted in the width direction on the cover plate (6).

4. The wind turbine tower lifting device according to claim 2 or 3, characterized in that, The seat (1) has a slot (103) on its side, the support member (2) has a protrusion (201) on its side, the gasket (5) has a notch (501), the protrusion (201) is movably installed in the slot (103), and the protrusion (201) passes through the notch (501).

5. The wind turbine tower lifting tool according to claim 1, characterized in that, The base (1) is provided with a third mounting hole, which is located between the two first mounting slots (101). The support shaft (7) is installed in the third mounting hole, and the hoisting component (4) is connected to the support shaft (7).

6. The wind turbine tower lifting tool according to claim 5, characterized in that, The support shaft (7) includes a flange section (702) and a shaft section (701). The shaft section (701) passes through the third mounting hole. The lifting member (4) is detachably connected to the end of the shaft section (701) away from the flange section (702).

7. The wind turbine tower lifting tool according to claim 5, characterized in that, Also includes: A first bearing (8) is disposed between the third mounting hole and the support shaft (7); The second bearing (9) is disposed between the third mounting hole and the support shaft (7).

8. The wind turbine tower lifting tool according to claim 6, characterized in that, The shaft segment (701) is provided with an external thread at the end away from the flange segment (702), and the lifting component (4) is provided with an internal thread. The shaft segment (701) is threadedly connected to the lifting component (4).

9. The wind turbine tower lifting tool according to claim 1, characterized in that, The bottom of the support member (2) and the inner bottom surface of the first mounting groove (101) are both provided with teeth (202).

10. The wind turbine tower lifting tool according to claim 1, characterized in that, The angle between the two first mounting slots (101) extending in the direction is less than 180°, and two of the support members (2) are installed in each first mounting slot (101).

Images