A blade demoulding and lifting fixture for large-scale high-precision wind power equipment processing

Abstract

The present invention relates to a large-scale high-precision blade demoulding and hoisting fixture for processing wind power equipment applied to the field of wind power blade manufacturing. Before hoisting the fan blade, a plurality of internal fixing bolts are installed inside a plurality of internal bolt sleeves, and then an upper rope is connected to a rear hoisting rope, and an end of a lower rope away from a cross bar is connected to a front hoisting rope, and a plurality of external fixing bolts are inserted into the inner sides of a plurality of external bolt sleeves one by one. When hoisting the fan blade, the fan blade is kept hoisted horizontally. The strain gauge installed on the external fixing bolt can detect the force magnitude of the external bolt sleeve, and indirectly obtain the force conditions of the internal bolt sleeves at different positions of the fan blade after being installed with a wind turbine body, thereby providing reliable data for the optimized design and installation of the fan blade, making the subsequent manufacture of the fan blade more reasonable, and at the same time helping to identify potential structural problems. By discovering these problems in advance, preventive measures can be taken to avoid structural failure and improve the manufacturing and installation processes.

Description

Technical Field

[0001] The invention relates to a large-scale high-precision wind power equipment blade demoulding hoisting fixture for processing, in particular to a large-scale high-precision wind power equipment blade demoulding hoisting fixture applied in the field of wind power blade manufacturing. Background Art

[0002] Wind turbine blades are formed in a mold during manufacturing. After the blades are formed, a crane is used to lift the blades out of the mold. During the manufacturing process, bolt sleeves are installed on the edge of the open end of the blades for subsequent connection with the wind turbine body.

[0003] During the process of lifting the blades, bolts can be used to fix the lifting fixture at the position of the bolt sleeve, and then a crane can be used to connect the lifting fixture for lifting. However, the current lifting fixture has a single function and cannot perform force analysis on the installation point between the blade and the wind turbine body, that is, the stress condition of the bolt sleeve. If the stress state of the bolt sleeve can be obtained during the lifting process, it will not only optimize the subsequent design and installation of the blades, but also discover potential problems in the blade installation in advance. Summary of the invention

[0004] In view of the above-mentioned prior art, the technical problem to be solved by the present invention is that the current lifting fixture has a single function and is unable to perform force analysis on the installation point between the blade and the wind turbine body.

[0005] To solve the above problems, the present invention provides a blade demoulding and lifting fixture for processing large-scale high-precision wind power equipment, comprising a front traveling frame and a rear traveling frame, wherein a front lifting rope and a rear lifting rope are respectively installed on the front traveling frame and the rear traveling frame, and further comprising a fan blade located on the inner side of the mold, an inner bolt sleeve is pre-embedded on the edge of the opening end of the fan blade, and further comprising a plurality of inner fixing bolts and a connecting plate, one end of the plurality of inner fixing bolts are fixedly connected to the outer bolt sleeve, a plurality of sliding holes matching the outer bolt sleeve are opened between the side walls at both ends of the connecting plate, the inner wall of the sliding hole is slidably connected with the outer fixing bolt, the outer wall of one end of the outer fixing bolt is fixedly connected with a plurality of evenly distributed strain gauges, a cross bar is fixedly connected to the middle part of one side of the connecting plate, a rotating hole is opened in the middle part of the cross bar, the inner wall of the rotating hole is rotatably connected with the hanging rod, the top end of the hanging rod is fixedly connected with the upper rope, and further comprising a crane, the bottom end of the crane is fixedly connected with the driving mechanism, the top end of the crane is fixedly connected with a support plate, the side wall of the support plate is rotatably connected with a pulley, the outer wall of the pulley is rotatably connected with a lower rope, and one end of the lower rope is fixedly connected to one end of the cross bar.

[0006] As a further improvement of the present application, an upper laser rangefinder is fixedly connected to one end of the front frame close to the rear frame, and the upper laser rangefinder is located on one side of the rear frame.

[0007] As a further improvement of the present application, a counterweight is fixedly connected to the top of the crane, and the counterweight is located on one side of the support plate.

[0008] As a further improvement of the present application, one end of the cross bar and one end of the lower rope are fixedly connected via a hydraulic retractor.

[0009] As another improvement of the present application, a driving module is installed inside the front frame and the rear frame, and also includes a synchronization module, which is electrically connected to the front frame, the rear frame and the driving mechanism.

[0010] As another improved supplement of the present application, a lower laser rangefinder is fixedly connected to the top of the counterweight block, and the lower laser rangefinder is located directly below the front frame.

[0011] To summarize, before hoisting the fan blades, multiple internal fixing bolts are installed inside multiple internal bolt sleeves, and then the upper rope is connected to the rear lifting rope, and the end of the lower rope away from the cross bar is connected to the front lifting rope, and multiple external fixing bolts are inserted into the inner sides of multiple external bolt sleeves one by one. When hoisting the fan blades, the fan blades are kept horizontally lifted. The strain gauges installed on the external fixing bolts can detect the force of the external bolt sleeves, and indirectly obtain the force conditions of the inner bolt sleeves at different positions of the fan blades after installation with the fan body, which provides reliable data for the optimal design and installation of the fan blades, makes the subsequent manufacture of the fan blades more reasonable, and can help identify potential structural problems. By discovering these problems in advance, preventive measures can be taken to avoid structural failure and improve manufacturing and installation processes. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 It is the overall front view of the first and second embodiments of the present application;

[0013] Figure 2 This is a state diagram of the fan blades being hoisted in the first and second embodiments of the present application;

[0014] Figure 3 This is a front cross-sectional view of the inner bolt sleeve and the outer bolt sleeve in the first embodiment of the present application;

[0015] Figure 4 This is a structural diagram of the first embodiment of the present application when the connecting disc and the fan blades are separated;

[0016] Figure 5 This is a structural diagram of the connection plate and the fan blades when they are assembled in the first embodiment of the present application;

[0017] Figure 6 It is a three-dimensional cross-sectional view of the inner bolt sleeve and the outer bolt sleeve in the first embodiment of the present application.

[0018] Description of the numbers in the figure:

[0019] 1. Front frame; 101. Front lifting rope; 2. Rear frame; 201. Rear lifting rope; 3. Mould; 4. Fan blade; 401. Inner bolt sleeve; 5. Inner fixing bolt; 501. Outer bolt sleeve; 6. Connecting plate; 601. Sliding hole; 7. Outer fixing bolt; 8. Strain gauge; 9. Cross bar; 10. Rotating hole; 11. Lifting rod; 12. Upper rope; 13. Crane; 14. Driving mechanism; 15. Support plate; 16. Pulley; 17. Lower rope; 18. Lower laser rangefinder; 19. Upper laser rangefinder; 20. Counterweight; 21. Hydraulic expander. DETAILED DESCRIPTION

[0020] Two implementation modes of the present application are described in detail below with reference to the accompanying drawings.

[0021] The first implementation method:

[0022] Figure 1-6 A blade demoulding and hoisting fixture for processing large-scale high-precision wind power equipment is shown, comprising a front frame 1 and a rear frame 2, on which a front hoisting rope 101 and a rear hoisting rope 201 are respectively installed, and also comprises a fan blade 4 located inside a mold 3, and an inner bolt sleeve 401 is pre-buried at the edge of the open end of the fan blade 4, and also comprises a plurality of inner fixing bolts 5 and a connecting plate 6, one end of each of the plurality of inner fixing bolts 5 is fixedly connected to an outer bolt sleeve 501, and a plurality of sliding holes 601 matching the outer bolt sleeve 501 are opened between the side walls at both ends of the connecting plate 6, and the inner wall of the sliding hole 601 is slidably connected to an outer fixing bolt 7 The outer wall of one end of the external fixing bolt 7 is fixedly connected with a plurality of evenly distributed strain gauges 8, the middle part of one side of the connecting plate 6 is fixedly connected with a cross bar 9, a rotating hole 10 is opened in the middle part of the cross bar 9, the inner wall of the rotating hole 10 is rotatably connected with a suspension rod 11, the top of the suspension rod 11 is fixedly connected with an upper rope 12, and also includes a crane 13, the bottom end of the crane 13 is fixedly connected with a driving mechanism 14, the top of the crane 13 is fixedly connected with a support plate 15, the side wall of the support plate 15 is rotatably connected with a pulley 16, the outer wall of the pulley 16 is rotatably connected with a lower rope 17, and one end of the lower rope 17 is fixedly connected to one end of the cross bar 9.

[0023] Before hoisting the fan blade 4, multiple internal fixing bolts 5 are installed inside the multiple internal bolt sleeves 401, and then the upper rope 12 is connected to the rear hoisting rope 201, and the end of the lower rope 17 away from the cross bar 9 is connected to the front hoisting rope 101, and multiple external fixing bolts 7 are inserted into the inner sides of the multiple external bolt sleeves 501 one by one. When hoisting the fan blade 4, the rear frame 2 is driven upward by the rear hoisting rope 201, and the front frame 1 drives the front hoisting rope 101 to move downward synchronously. At this time, the cross bar 9 keeps the fan blade 4 hoisted horizontally under the action of the lever. After the fan blade 4 is completely separated from the mold 3, the stress state of the corresponding internal bolt sleeve 401 is transmitted to the outer On the bolt sleeve 501, the strain gauge 8 installed on the external fixing bolt 7 can detect the force applied to the external bolt sleeve 501. Through the strain gauges 8 installed on multiple external fixing bolts 7, the force conditions of the inner bolt sleeve 401 at different positions can be obtained, and the force conditions of the inner bolt sleeve 401 at different positions of the fan blade 4 after being installed on the fan body can be indirectly obtained, which provides reliable data for the optimized design and installation of the fan blade 4, makes the subsequent manufacture of the fan blade 4 more reasonable, and can also help identify potential structural problems, such as excessively stressed bolts. By discovering these problems in advance, preventive measures can be taken to avoid structural failure and improve the manufacturing and installation processes.

[0024] The second implementation method:

[0025] Figure 1-2 A blade demoulding and lifting fixture for processing large-scale high-precision wind power equipment is shown. Different from the first embodiment, an upper laser rangefinder 19 is fixedly connected to one end of the front frame 1 close to the rear frame 2, and the upper laser rangefinder 19 is located on one side of the rear frame 2.

[0026] When the upper laser rangefinder 19 is started, it can measure the distance between the front frame 1 and the rear frame 2, so that when the front frame 1 and the rear frame 2 deviate during the synchronous movement, they can be adjusted in time to improve the stability of the front frame 1 and the rear frame 2 during operation.

[0027] When the traditional front frame 1 and rear frame 2 are hoisted, the front frame 1 is located at the head of the fan blade 4 and the rear frame 2 is located at the tail of the fan blade 4. Laser ranging is also used to monitor the distance between the front frame 1 and the rear frame 2. However, since the length of the fan blade 4 can reach hundreds of meters, a long-range upper laser rangefinder 19 is required.

[0028] Through the above arrangement, the distance between the front frame 1 and the rear frame 2 during hoisting is shortened, and the distance between the front frame 1 and the rear frame 2 can be controlled within five meters. Although laser ranging is also adopted, the upper laser rangefinder 19 in the present invention can adopt a shorter-range upper laser rangefinder 19, and the short-range upper laser rangefinder 19 is superior to the traditional long-range upper laser rangefinder 19 in terms of measurement accuracy, measurement stability and cost, which not only increases the measurement accuracy but also saves the measurement cost.

[0029] A counterweight block 20 is fixedly connected to the top of the trolley 13 , and the counterweight block 20 is located on one side of the support plate 15 . Through the above arrangement, the weight of the trolley 13 can be increased, and the supporting force of the pulley 16 can be increased.

[0030] One end of the cross bar 9 and one end of the lower rope 17 are fixedly connected by a hydraulic telescope 21. Through the above arrangement, when hoisting fan blades 4 of different weights, the length of the left side force arm of the cross bar 9 can be adjusted by adjusting the length of the hydraulic telescope 21, so that the pulley 16 can be suitable for fan blades 4 of different weights.

[0031] A driving module is installed inside the front frame 1 and the rear frame 2, and also includes a synchronization module. The synchronization module is electrically connected to the front frame 1, the rear frame 2 and the driving mechanism 14. Through the above arrangement, the driving mechanism 14 can drive the crane 13 to move synchronously along the movement of the front frame 1 and the rear frame 2.

[0032] The top of the counterweight block 20 is fixedly connected to a lower laser rangefinder 18, which is located directly below the front frame 1. Through the above arrangement, the lower laser rangefinder 18 can monitor the relative movement between the crane 13 and the front frame 1 in real time, so that the synchronization module can better adjust the synchronous movement between the front frame 1 and the crane 13.

[0033] In view of current practical needs, the above-mentioned implementation mode adopted in this application is not limited to the scope of protection. Various changes made within the knowledge scope of technical personnel in this field without departing from the concept of this application still fall within the scope of protection of the present invention.

Claims

1. A blade demoulding and hoisting fixture for processing large-scale high-precision wind power equipment, comprising a front frame (1) and a rear frame (2), wherein a front hoisting rope (101) and a rear hoisting rope (201) are respectively installed on the front frame (1) and the rear frame (2), and further comprising a fan blade (4) located inside a mold (3), wherein an inner bolt sleeve (401) is pre-buried at the edge of the open end of the fan blade (4), characterized in that: It also includes a plurality of internal fixing bolts (5) and a connecting plate (6), one end of each of the plurality of internal fixing bolts (5) is fixedly connected to an external bolt sleeve (501), a plurality of sliding holes (601) matching the external bolt sleeve (501) are provided between the side walls at both ends of the connecting plate (6), the inner wall of the sliding hole (601) is slidably connected to an external fixing bolt (7), the outer wall of one end of the external fixing bolt (7) is fixedly connected to a plurality of evenly distributed strain gauges (8), the middle part of one side of the connecting plate (6) is fixedly connected to a cross bar (9), the middle part of the cross bar (9) A rotating hole (10) is provided, the inner wall of the rotating hole (10) is rotatably connected to a suspension rod (11), the top of the suspension rod (11) is fixedly connected to an upper rope (12), and also includes a trolley (13), the bottom end of the trolley (13) is fixedly connected to a driving mechanism (14), the top of the trolley (13) is fixedly connected to a support plate (15), the side wall of the support plate (15) is rotatably connected to a pulley (16), the outer wall of the pulley (16) is rotatably connected to a lower rope (17), and one end of the lower rope (17) is fixedly connected to one end of a cross bar (9).

2. According to claim 1, a large-scale high-precision wind power equipment processing blade demoulding and hoisting fixture is characterized by: An upper laser rangefinder (19) is fixedly connected to one end of the front frame (1) close to the rear frame (2), and the upper laser rangefinder (19) is located on one side of the rear frame (2).

3. The large-scale high-precision wind power equipment processing blade demoulding and hoisting fixture according to claim 1 is characterized in that: A counterweight block (20) is fixedly connected to the top of the traveling crane (13), and the counterweight block (20) is located on one side of the supporting plate (15).

4. The large-scale high-precision wind power equipment processing blade demoulding and hoisting fixture according to claim 1 is characterized in that: One end of the cross bar (9) and one end of the lower rope (17) are fixedly connected via a hydraulic retractor (21).

5. The large-scale high-precision wind power equipment processing blade demoulding and hoisting fixture according to claim 1 is characterized in that: The front frame (1) and the rear frame (2) are both internally installed with a driving module, and also include a synchronization module, wherein the synchronization module is electrically connected to the front frame (1), the rear frame (2) and the driving mechanism (14).

6. A large-scale high-precision wind power equipment processing blade demoulding and hoisting fixture according to claim 3, characterized in that: The top end of the counterweight block (20) is fixedly connected to a lower laser rangefinder (18), and the lower laser rangefinder (18) is located directly below the front frame (1).

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