Lifting appliance for lifting blades of gas turbine
By designing a lifting device for gas turbine blades, mechanized lifting of the blades was achieved, solving the problems of laborious manual handling and the risk of falling, and ensuring the stability and safety of the lifting process.
Patent Information
- Application Number
- CN202520594897.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-03-31
- Publication Date
- 2026-02-03
- Estimated Expiration
- 2035-03-31
AI Technical Summary
Gas turbine blades are heavy, making manual handling laborious and posing a risk of them falling and injuring workers.
Design a lifting device including a retaining arm, a first retaining part, a second retaining part and a third retaining part, which works in conjunction with a lifting device and is connected to the lifting device through a hook part. The first and second retaining parts support the convex surface of the blade, and the third retaining part fixes the top of the blade, so as to realize three-point support and horizontal lifting of the blade.
This technology enables mechanized transfer of blades, avoiding the risks of injury and falling caused by manual handling, ensuring that the blades remain stable and parallel to the horizontal plane during hoisting, and simplifying subsequent processing steps.
Smart Images
Figure CN223866186U_ABST
Abstract
Description
Technical Field
[0001] This application relates to a lifting device for lifting gas turbine blades. Background Technology
[0002] Gas turbine blades are typically heavy, with many blades weighing over 50 kg. Figure 1 The image shows this type of blade. In the factory, these blades need to be moved from the storage box to the workbench for processing. Workers endure the arduous task of manually moving the blades up and down for extended periods. The national standard (weight limit for manual handling) stipulates a weight limit of 15 kg for manual handling; repetitive daily handling like this poses a significant risk of injury. Furthermore, during the handling process, there is a risk of the blades slipping and falling, causing product damage or injuring workers. Utility Model Content
[0003] In view of this, the present invention proposes a lifting device for lifting gas turbine blades, which solves the technical problems of manual blade handling and the risk of blade falling and worker injury in the prior art.
[0004] To achieve the above objectives, according to one aspect of the present application, a lifting device for a gas turbine blade is provided. The blade includes a blade body having convex and concave surfaces and extending along a length direction, and a blade tip located at one end of the blade body. The lifting device includes: a retaining arm configured to cross the blade from above the blade along a transverse direction of the blade body when lifting the blade, the retaining arm having a hook portion; a first retaining portion located at a first end of the retaining arm; a second retaining portion located at a second end of the retaining arm, arranged opposite to the first retaining portion, and a retaining space is formed between the first and second retaining portions to allow at least a portion of the blade tip and blade body to pass through; and a third retaining portion connected to a middle portion of the retaining arm, the third retaining portion including a fixed member and a movable member to clamp a portion of the blade between the fixed member and the movable member. The lifting device is configured such that when lifting the blade, it is connected to the lifting device via a hook, so that the first holding part supports the convex surface of the blade body at a first position, the second holding part supports the convex surface of the blade body at a second position opposite to the first position, and the third holding part fixes the blade tip at a third position, thereby limiting the relative position of the blade body with respect to the first and second holding parts in the length direction of the blade body, so that the blade is parallel to the horizontal plane when lifted.
[0005] This application utilizes a lifting device in conjunction with a hoisting tool to transport gas turbine blades, achieving mechanized transfer of the blade components and avoiding the risks of injury to operators and the risk of blade components falling and becoming unusable associated with manual handling. Furthermore, during the lifting process, the blades are secured and supported by the first, second, and third holding parts, while the natural downward force of gravity keeps the blades horizontal, ensuring stable lifting.
[0006] Furthermore, the lifting device is configured such that the first position and the second position are at the same horizontal height when lifting the blade, thereby ensuring that the blade remains parallel to the horizontal plane, achieving stable lifting of the blade and facilitating subsequent processing of the blade.
[0007] Furthermore, the spreader also includes a rod extending perpendicularly to and connected to the middle portion of the retaining arm, with fixed and movable components located at the first end of the rod. This arrangement allows the third retaining portion to form with the first and second retaining portions at the three apexes of a triangle, providing stable support and fixation for the blades.
[0008] Furthermore, the fixed component is fixedly mounted on the rod, and the movable component is connected to one end of the rod via a threaded connection and configured to rotate about the axis of the rod.
[0009] This configuration allows the movable part to be rotated to a position that does not interfere with the tip of the blade when receiving the blade. After the blade passes through the first and second retaining parts in the length direction and a portion of the blade tip abuts against the fixed part, the movable part is rotated so that the portion of the blade tip is located between the fixed and movable parts, thereby conveniently limiting and fixing the blade with a simple structure.
[0010] Furthermore, both the movable and fixed parts are plate-shaped, with the fixed part perpendicular to the rod. The movable and fixed parts form an angle of less than 90 degrees. When hoisting the blade, a portion of the blade tip is located in a space of less than 90 degrees between the fixed and movable parts, facilitating the limiting and fixing of the blade.
[0011] Furthermore, the first retaining portion has a concave first receiving portion extending along the length direction of the blade body, and the second retaining portion has a concave second receiving portion extending along the length direction of the blade body. The first receiving portion faces the second receiving portion so that the blade is fixed between the first receiving portion and the second receiving portion when the blade is hoisted. The concave first receiving portion and the second receiving portion facilitate receiving and supporting the blade.
[0012] Furthermore, the first receiving portion and the second receiving portion each include an upper retaining plate and a lower retaining plate, such that the cross-section of the first receiving portion and the second receiving portion are both L-shaped with corners, and the corners extend along the edge of the blade body.
[0013] Setting the first and second receiving parts to be L-shaped can help support the blades.
[0014] Furthermore, gaskets are provided on the parts of the first and second receiving parts that abut against the blade, and gaskets are also provided on the parts of the fixed and moving parts that abut against the blade to prevent the blade from directly contacting the rigid first, second, and third retaining parts and damaging the blade surface.
[0015] Furthermore, the hook part is a through hole. The through hole on the retaining arm allows for connection to the lifting device, resulting in a simple structure that is easy to manufacture.
[0016] Furthermore, the rod extends through the retaining arm, and a handle is provided at the second end of the rod, which is arranged opposite to the third retaining part across the retaining arm.
[0017] The handle, located on one side of the holding arm, is positioned opposite the third holding part, allowing operators to easily hold the lifting device with their hands during the lifting of the blade, thus helping to maintain the balance of the lifting device and preventing it from swaying. Attached Figure Description
[0018] The accompanying drawings, which are included to provide a further understanding of this application and form part of this application, illustrate exemplary embodiments and are used to explain this application, but do not constitute an undue limitation of this application. In the drawings:
[0019] Figure 1 This is a side view of the lifting device used to lift the blade according to this application.
[0020] Figure 2 This is a perspective view of the lifting device used to lift blades according to this application.
[0021] Figure 3 This is a perspective view of the lifting device according to this application.
[0022] Figure 4 This is a side view of the lifting device according to this application.
[0023] Figure 5 This is a front view of the lifting device according to this application.
[0024] Figure 6 This is a top view of the lifting device according to this application.
[0025] The reference numerals in the attached figures are as follows:
[0026] 1. Lifting gear
[0027] 2. Leaves
[0028] 21. Leaf body
[0029] 22. Leaf tip
[0030] 3. Keep your arm
[0031] 31. Hook and hook section
[0032] 4. First retaining part
[0033] 5. Second retaining part
[0034] 6. Third Maintenance Section
[0035] 61. Fixing components
[0036] 62. Moving parts
[0037] 63. Threaded parts
[0038] 8. Rods
[0039] 81. Handle part
[0040] 9. Gaskets Detailed Implementation
[0041] To enable those skilled in the art to better understand the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present application, and not all embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative effort should fall within the scope of protection of the present application.
[0042] It should be noted that the terms "first," "second," etc., in the specification, claims, and accompanying drawings of this application are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate so that the embodiments of this application described herein can be implemented in orders other than those illustrated or described herein. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover non-exclusive inclusion; for example, a process, method, system, product, or device that comprises a series of steps, modules, or units is not necessarily limited to those explicitly listed, but may include other steps, modules, or units not explicitly listed or inherent to such processes, methods, products, or devices.
[0043] like Figure 1 and Figure 2As shown, this application provides a lifting device 1 for lifting a gas turbine blade 2. The blade 2 includes a blade body 21 and a blade tip 22. The blade body 21 has a convex surface and a concave surface and extends along the length direction, and the blade tip 22 is located at one end of the blade body 21. The length direction is the longitudinal direction of the blade 2.
[0044] Figure 3 A perspective view of lifting device 1 is shown. Figure 6 This is a top view of the lifting device 1, which includes a retaining arm 3, a first retaining part 4, a second retaining part 5, and a third retaining part 6.
[0045] The retaining arm 3 is configured to span the blade 2 from above along the transverse direction of the blade body 21 when lifting the blade 2. The transverse direction is orthogonal to the length direction or longitudinal direction. The retaining arm 3 has a hook 31 for connecting to an external lifting device to lift the blade.
[0046] The retaining arm 3 is curved, with a first retaining part 4 located at the first end of the retaining arm 3 and a second retaining part 5 located at the second end of the retaining arm 3, arranged opposite to the first retaining part 4. A retaining space is formed between the first retaining part 4 and the second retaining part 5, allowing at least a portion of the leaf tip 22 and the leaf body 21 to pass through.
[0047] The third retaining part 6 is connected to the middle portion of the retaining arm 3 and is used to abut a portion of the blade tip 22. The third retaining part 6 includes a fixed part 61 and a movable part 62 to clamp that portion of the blade 2 between the fixed part 61 and the movable part 62.
[0048] The lifting device 1 is configured to connect to the lifting device via the hook part 31 when lifting the blade 2, such that the first holding part 4 supports the convex surface of the blade body 21 of the blade 2 at the first position, the second holding part 5 supports the convex surface of the blade body 21 of the blade 2 at the second position opposite to the first position, and the third holding part 6 fixes the blade tip 22 of the blade 2 at the third position, thereby limiting the relative position of the blade body 21 of the blade 2 with the first holding part 4 and the second holding part 5 in the length direction of the blade body 21, so that the blade 2 is parallel to the horizontal plane when lifted.
[0049] The lifting device 1 is configured such that when lifting the blade 2, the first position and the second position are at approximately the same horizontal height. For example... Figure 1 and Figure 4 As shown, the first retaining part 4 and the second retaining part 5 can be in a slightly inclined state to match the shape of the convex surface of the blade 2, and the first and second positions of the two in contact with the blade 2 are generally at the same horizontal height.
[0050] The lifting device 1 also includes a rod 8, which extends perpendicularly to the retaining arm 3 and is connected to the middle part of the retaining arm 3. A fixed part 61 and a movable part 62 are disposed at the first end of the rod 8.
[0051] The fixed component 61 is fixedly mounted on the rod 8, and the movable component 62 is connected to the first end of the rod 8 via a threaded component 63 and configured to rotate about the axis of the rod 8. Before lifting the blade 2, when the lifting device 1 receives the blade 2, the movable component 62 can be rotated to a position that does not interfere with the blade tip 22 of the blade 2. After the blade 2 passes through the first retaining part 4 and the second retaining part 5 in the length direction and a portion of the blade tip 22 abuts against the fixed component 61, the movable component 62 is rotated so that the portion of the blade tip 22 is located between the fixed component 61 and the movable component 62, thereby conveniently limiting and fixing the blade with a simple structure.
[0052] Furthermore, both the movable part 62 and the fixed part 61 are plate-shaped, with the fixed part 61 perpendicular to the rod 8. The movable part 62 and the fixed part 61 form an angle less than 90 degrees. Figure 1 As shown, when the blade 2 is hoisted, a portion of the blade tip 22 is located in a space of less than 90 degrees between the fixed component 61 and the movable component 62, which facilitates the limiting and fixing of the blade 2.
[0053] Furthermore, the rod 8 extends through the retaining arm 3, and a handle portion 81 is provided at the second end of the rod 8. The handle portion 81 is arranged opposite to the third retaining portion 6 across the retaining arm 3.
[0054] Preferably, such as Figure 4 As shown, a handle made of rubber or other materials is provided on the handle portion 81 to increase the friction when the operator's hand contacts the handle portion 81. A textured part (not shown) may also be provided on the handle to further increase the friction.
[0055] like Figure 3 and Figure 5 As shown, the first retaining part 4 has a concave first receiving part extending along the length direction of the blade body 21 of the blade 2, and the second retaining part 5 has a concave second receiving part extending along the length direction of the blade body 21 of the blade 2. The first receiving part faces the second receiving part so that the blade 2 is fixed between the first receiving part and the second receiving part when the blade 2 is hoisted. The concave first receiving part and the second receiving part facilitate receiving and supporting the blade 2.
[0056] like Figure 5As shown, the first receiving portion and the second receiving portion each include an upper retaining plate and a lower retaining plate, such that the cross-section of both the first receiving portion and the second receiving portion is L-shaped with corners, and the corners extend along the edge of the blade body 21 of the blade 2. Setting the first receiving portion and the second receiving portion to be L-shaped simplifies the structure and facilitates the receiving and support of the blade.
[0057] Gaskets 9 are provided on the parts of the first and second receiving parts that abut against the blade 2, and gaskets 9 are also provided on the parts of the fixed part 61 and the movable part 62 that abut against the blade 2, to prevent the blade from directly contacting the hard first holding part, second holding part and third holding part and damaging the blade surface.
[0058] Specifically, the gasket 9 can be made of rubber or plastic.
[0059] The hook part 31 is a through hole. The through hole is provided on the retaining arm 3 to connect with the lifting device. The structure is simple and easy to manufacture.
[0060] Furthermore, the hook portion 31 can also be other components, such as a ring disposed on the retaining arm 3. Without departing from the scope of this invention, the hook portion can be any suitable form capable of achieving connection with the lifting device.
[0061] The following is based on Figure 1 Taking this as an example, briefly describe the hoisting process of blade 2. The lifting device 1, connected to the hoisting equipment, is lifted from... Figure 1 The left side is above the blade 2, so that the first retaining part 4 and the second retaining part 5 pass through both sides of the blade 2. Since the blade 2 is concave (i.e. has a concave surface and a convex surface), the third retaining part 6 located in the middle part will not interfere with the blade 2 (at this time, the movable part 62 has been rotated to the position above). Until the fixing part 61 of the third retaining part 6 abuts against a part of the upward protrusion of the blade tip 22, the movable part 62 rotates downward so that the part of the blade tip is located in the space between the fixing part 61 and the movable part 62, thereby fixing and limiting the blade 2 in the space.
[0062] In addition, during the lifting of blade 2, the position where the lifting device 1 contacts blade 2 has been designed by computer simulation based on parameters such as the center of gravity, weight, length and width of blade 2, so that blade 2 is kept horizontally lifted and will not tilt.
[0063] As can be seen from the above description, the embodiments of this utility model can achieve the following beneficial technical effects.
[0064] The lifting device 1 for lifting gas turbine blades 2 according to this application replaces manual handling of the blades 2, realizing mechanized and automated lifting of the blades 2. Its simple structure avoids the long-term chronic occupational damage and potential injury risks to operators caused by manually handling heavy blades 2. The lifting device 1 provides three-point support and fixation for the blades 2 through a first holding part 4, a second holding part 5, and a third holding part 6, ensuring that the blades 2 are firmly fixed during lifting and kept parallel to the horizontal plane, preventing the blades from falling.
[0065] The above description is merely a preferred embodiment of this application and is not intended to limit this application. Various modifications and variations can be made to this application by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the protection scope of this application.
Claims
1. A lifting device for lifting blades of a gas turbine, said blade (2) comprising a blade body (21) having convex and concave surfaces and extending along its length, and a blade tip (22) located at one end of said blade body, characterized in that, The lifting device (1) includes: A retaining arm (3) is configured to cross the blade (2) from above the blade (2) in the lateral direction of the blade body (21) when the blade (2) is being hoisted, and the retaining arm (3) has a hook (31); The first retaining part (4) is located at the first end of the retaining arm (3); The second retaining part (5) is located at the second end of the retaining arm (3) and is arranged opposite to the first retaining part (4). A retaining space is formed between the first retaining part (4) and the second retaining part (5) to allow at least a portion of the leaf tip (22) and the leaf body (21) to pass through. A third retaining part (6) is connected to the middle portion of the retaining arm (3). The third retaining part (6) includes a fixed part (61) and a movable part (62) to clamp a portion of the blade (2) between the fixed part (61) and the movable part (62); and The lifting device (1) is configured to connect to the lifting device via the hook (31) when lifting the blade (2), such that the first holding part (4) supports the convex surface of the blade body (21) of the blade (2) at a first position, the second holding part (5) supports the convex surface of the blade body (21) of the blade (2) at a second position opposite to the first position, and the third holding part (6) fixes the blade tip (22) of the blade (2) at a third position, thereby defining the relative position of the blade body (21) of the blade (2) with respect to the first holding part (4) and the second holding part (5) in the length direction of the blade body (21), so that the blade (2) is parallel to the horizontal plane when lifted.
2. The lifting device for transporting gas turbine blades according to claim 1, characterized in that, The lifting device (1) is configured such that when the blade (2) is being lifted, the first position and the second position are at the same horizontal height.
3. The lifting device for transporting gas turbine blades according to claim 1, characterized in that, The lifting device (1) also includes a rod (8) that extends perpendicularly to the retaining arm (3) and is connected to the middle portion of the retaining arm (3), with the fixed part (61) and the movable part (62) disposed at the first end of the rod (8).
4. The lifting device for transporting gas turbine blades according to claim 3, characterized in that, The fixed component (61) is fixedly mounted on the rod (8), and the movable component (62) is connected to the first end of the rod (8) via a threaded component (63) and configured to rotate about the axis of the rod (8).
5. The lifting device for transporting gas turbine blades according to claim 4, characterized in that, Both the movable part (62) and the fixed part (61) are plate-shaped. The fixed part (61) is perpendicular to the rod (8). The movable part (62) and the fixed part (61) form an angle, which is less than 90 degrees.
6. The lifting device for transporting gas turbine blades according to claim 1, characterized in that, The first holding part (4) has a concave first receiving part extending along the length direction of the blade body (21) of the blade (2), and the second holding part (5) has a concave second receiving part extending along the length direction of the blade body (21) of the blade (2). The first receiving part faces the second receiving part so that the blade (2) is fixed between the first receiving part and the second receiving part when the blade (2) is hoisted.
7. The lifting device for transporting gas turbine blades according to claim 6, characterized in that, The first receiving portion and the second receiving portion each include an upper retaining plate and a lower retaining plate, such that the cross-section of the first receiving portion and the second receiving portion are both L-shaped with corners, and the corners extend along the edge of the blade body (21) of the blade (2).
8. The lifting device for transporting gas turbine blades according to claim 7, characterized in that, Both the first receiving part and the second receiving part are provided with gaskets (9) at the parts that abut against the blade (2), and both the fixed part (61) and the movable part (62) are provided with gaskets (9) at the parts that abut against the blade (2).
9. The lifting device for transporting gas turbine blades according to claim 1, characterized in that, The hook part (31) is a through hole.
10. The lifting device for transporting gas turbine blades according to claim 3, characterized in that, The rod (8) extends through the retaining arm (3), and a handle (81) is provided at the second end of the rod (8). The handle (81) is arranged opposite to the third retaining part (6) across the retaining arm (3).