A cable buffer device inside a wind turbine

Abstract

The utility model discloses a cable buffer device inside a wind turbine generator, comprising a collar, an outer surface of the collar is fixedly connected with an extrusion device, an outer surface of the extrusion device is fixedly connected with a drawstring, an outer surface of the drawstring is fixedly connected with a stopper, a lifting plate is arranged outside the stopper, and a screw is threadedly connected to the inner surface of the lifting plate. The utility model relates to the technical field of wind power generation. The device is provided with an extrusion device, and a pressing block is used to press the surface of the cable. When the cable shakes left and right or up and down, the pressing block moves with the cable, and at the same time, the buffer spring and the telescopic plate are extended, and the rotating shaft and the sliding shaft move in the sliding groove and the sliding groove, and then the buffer spring contracts to reset the cable. By providing a lifting plate, the space between the extrusion devices can be adjusted, so as to achieve the purpose of avoiding damage to the cable surface due to friction and facilitating the installation of the device on cables of different diameters.

Description

Technical Field

[0001] The utility model relates to the technical field of wind power generation, in particular to an internal cable buffer device of a wind power generator. Background Art

[0002] Wind power generation is the process of converting the kinetic energy of wind into mechanical energy, and then converting the mechanical energy into electrical energy. This is wind power generation. The principle of wind power generation is to use wind power to drive the windmill blades to rotate, and then increase the rotation speed through a speed increaser to drive the generator to generate electricity.

[0003] In the prior art, such as the Chinese patent number: CN216929538U, a cable protection device for a wind turbine generator set includes a fixed frame, a buffer mechanism is arranged inside the fixed frame; the buffer mechanism includes a mounting plate, the mounting plate is arranged inside the fixed frame, a plurality of mounting rings are fixedly arranged on the top of the mounting plate, a transverse buffer component is arranged at the bottom of the mounting plate, and longitudinal buffer components are arranged at both ends of the mounting plate. The beneficial effect of the cable protection device for a wind turbine generator set is: the cable of the suspended section in the buffer mechanism is contracted by the telescopic rod and the spring when swinging, so as to achieve a buffering effect, reduce the swing amplitude of the suspended section of the cable, prevent friction and collision between the cables of the suspended section, prevent mutual friction or collision between the cables of the suspended section from causing damage, thereby improving the service life of the cable, and at the same time, the telescopic rod and the spring make the cable of the suspended section reset faster, thereby preventing the cable joint from loosening due to frequent swinging, reducing safety hazards.

[0004] However, in the prior art, although the above patent has the above technical advantages, it has the following disadvantages: the above device passes the cable through the installation ring. When the cable shakes in the installation ring, friction will occur between the cable surface and the edge of the installation ring, which may cause damage to the cable surface. In addition, the inner diameter of the installation ring in the above device is fixed, which is not suitable for cables of different diameters. If a variety of installation rings are produced according to the size of the cable, it may lead to an increase in production costs. Utility Model Content

[0005] In view of the deficiencies in the prior art, the technical solution adopted by the utility model to solve the technical problems is: a cable buffer device inside a wind turbine, comprising a ring, an outer surface of the ring is fixedly connected to an extrusion device, an outer surface of the extrusion device is fixedly connected to a draw rope, an outer surface of the draw rope is fixedly connected to a block, a lifting plate is arranged outside the block, a screw is threadedly connected to the inner surface of the lifting plate, a clamping block is arranged outside the screw, the outer surface of the clamping block is fixedly connected to the outer surface of the ring, a clamping groove is opened in the wall of the ring, when the operator needs to install the buffer device on multiple cables, the clamping block on the first buffer device is slid into the clamping groove of the next buffer device.

[0006] Preferably, the outer surface of the extrusion device is rotatably connected to a first roller, the outer surface of the first roller is rotatably connected to the outer surface of the draw rope, the outer surface of the draw rope is rotatably connected to a second roller, the outer surface of the second roller is rotatably connected to the outer surface of the lifting plate, and the draw rope passes through the first roller and the second roller when rising, which can reduce the friction between the draw rope and the device.

[0007] Preferably, the outer surface of the screw is rotatably connected to the outer surface of the collar, the outer surface of the collar is fixedly connected to a limit strip, the outer surface of the limit strip is slidably connected to the outer surface of the lifting plate, the outer surface of the limit strip is fixedly connected to a mounting plate, and both sides of the lifting plate are blocked by the limit strip to prevent the lifting plate from being driven by the screw to rotate.

[0008] Preferably, the outer surface of the ring is fixedly connected to a fixing block, the outer surface of the fixing block is rotatably connected to a baffle, the inner surface of the baffle is threadedly connected to a fastening bolt, the outer surface of the fastening bolt is threadedly connected to the inner surface of the ring, the position of the baffle is fixed by the fastening bolt, the baffle blocks the inlet on the slot to prevent the block from slipping out again and causing the multiple buffer devices to separate.

[0009] Preferably, the extrusion device includes a fixed plate, a sliding groove is opened in the wall of the fixed plate, the inner surface of the fixed plate is slidably connected to a rotating shaft, the outer surface of the rotating shaft is rotatably connected to a telescopic plate, the inner surface of the telescopic plate is rotatably connected to a sliding shaft, and the outer surface of the sliding shaft is slidably connected to a pressure block, when the cable swings up and down, the pressure block moves with the cable, then the buffer spring between the pressure block and the fixed plate is stretched, the telescopic plate is also stretched, and the two ends of the telescopic plate rotate around the rotating shaft and the sliding shaft respectively.

[0010] Preferably, a sliding groove is opened in the wall of the pressing block, the outer surface of the pressing block is fixedly connected with a buffer spring, the outer surface of the buffer spring is fixedly connected to the outer surface of the fixed plate, the outer surface of the draw rope is fixedly connected with a connecting rod, the outer surface of the connecting rod is fixedly connected to the outer surface of the pressing block, the draw rope is connected to the pressing block through the connecting rod, and the pressing block also rises with the draw rope.

[0011] The beneficial effects of the utility model are as follows:

[0012] 1. The utility model provides an extrusion device, when the cable swings up and down, the pressing block moves with the cable, then the buffer spring between the pressing block and the fixed plate is stretched, the telescopic plate is also stretched, and the two ends of the telescopic plate rotate around the rotating shaft and the sliding shaft respectively, then the buffer spring contracts to reset the pressing block, and the cable is also reset; when the cable swings left and right, the pressing block moves with the cable, the buffer spring is stretched, the telescopic plate is also stretched, and at the same time the rotating shaft moves in the sliding groove and rotates with the length from the top of the telescopic plate to the cable surface as a radius, and the sliding shaft similarly moves in the sliding groove and rotates with the length from the bottom of the telescopic plate to the cable surface as a radius, then the buffer spring contracts to reset the telescopic plate and the pressing block, and the cable is also reset, thereby solving the problem that the cable may rub against the device when swinging, causing damage to the cable surface.

[0013] 2. The utility model provides a lifting plate, and the operator rotates the screw to make the lifting plate threadedly connected to the screw move on the screw, and the two sides of the lifting plate are blocked by limit strips to prevent the lifting plate from being driven by the screw to rotate. When the lifting plate rises to the point where the block on the draw rope contacts the second roller, the lifting plate will drive the draw rope to rise, and the draw rope will pass through the first roller and the second roller when it rises, which can reduce the friction between the draw rope and the device. The draw rope is connected to the pressure block through the connecting rod, and the pressure block also rises with the lifting plate. When the operator lifts all the pressure blocks in the extrusion device, a large space is left between the extrusion devices. The operator can pass the cable through the ring and then rotate the screw again to make the pressure block squeeze the cable surface until the block does not contact the second roller and a certain length of the draw rope is left outside the lifting plate, which solves the problem that traditional devices generally cannot be adjusted according to the diameter of the cable. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is the front view of the utility model;

[0015] Figure 2 It is a rear view of the utility model;

[0016] Figure 3 It is a sectional view of the rear view of the utility model;

[0017] Figure 4 It is a structural schematic diagram of the extrusion device of the utility model.

[0018] In the figure: 1. ring; 2. extrusion device; 3. drawstring; 4. block; 5. lifting plate; 6. screw; 7. block; 8. slot; 9. first roller; 10. second roller; 11. limit strip; 12. baffle; 13. fixed block; 14. fastening bolt; 15. fixed plate; 16. sliding slot; 17. rotating shaft; 18. telescopic plate; 19. sliding shaft; 20. slide slot; 21. pressure block; 22. buffer spring; 23. connecting rod; 24. mounting plate. DETAILED DESCRIPTION

[0019] The present invention is further described in detail below in conjunction with the accompanying drawings and specific embodiments. The embodiments of the present invention are provided for the purpose of illustration and description, and are not intended to be exhaustive or to limit the present invention to the disclosed forms. Many modifications and variations are obvious to those of ordinary skill in the art. The embodiments are selected and described in order to better illustrate the principles and practical applications of the present invention, and to enable those of ordinary skill in the art to understand the present invention and design various embodiments with various modifications suitable for specific purposes.

[0020] Example:

[0021] See also Figure 1 - Figure 4 The utility model provides a technical solution: a cable buffer device inside a wind turbine generator, comprising a collar 1, an outer surface of the collar 1 is fixedly connected with an extrusion device 2, an outer surface of the extrusion device 2 is fixedly connected with a draw rope 3, an outer surface of the draw rope 3 is fixedly connected with a stopper 4, a lifting plate 5 is arranged outside the stopper 4, a screw 6 is threadedly connected to the inner surface of the lifting plate 5, a clamping block 7 is arranged outside the screw 6, the outer surface of the clamping block 7 is fixedly connected with the outer surface of the collar 1, a clamping groove 8 is opened in the wall of the collar 1, when the operator needs to install the buffer device on multiple cables, the clamping block 7 on the first buffer device is slid into the clamping groove 8 of the next buffer device, the outer surface of the extrusion device 2 is rotatably connected with a first roller 9, the outer surface of the first roller 9 is rotatably connected with the outer surface of the draw rope 3, the outer surface of the draw rope 3 is rotatably connected with a second roller 10, the outer surface of the second roller 10 is rotatably connected with the outer surface of the lifting plate 5, the draw rope 3 passes through the first roller 9 and the second roller 10 when it rises, and the friction between the draw rope 3 and the device can be reduced.

[0022] The outer surface of the screw rod 6 is rotatably connected to the outer surface of the collar 1, the outer surface of the collar 1 is fixedly connected to the limit strip 11, the outer surface of the limit strip 11 is slidably connected to the outer surface of the lifting plate 5, the outer surface of the limit strip 11 is fixedly connected to the mounting plate 24, the two sides of the lifting plate 5 are blocked by the limit strip 11 to prevent the lifting plate 5 from being driven by the screw rod 6 to rotate, the outer surface of the collar 1 is fixedly connected to the fixing block 13, the outer surface of the fixing block 13 is rotatably connected to the baffle 12, the inner surface of the baffle 12 is threadedly connected to the fastening bolt 14, the outer surface of the fastening bolt 14 is threadedly connected to the inner surface of the collar 1, the fastening bolt 14 is used to fix the position of the baffle 12, the baffle 12 blocks the inlet on the card slot 8 to prevent the card block 7 from sliding out again so that multiple buffer devices are separated.

[0023] The extrusion device 2 includes a fixed plate 15, a sliding groove 16 is provided in the wall of the fixed plate 15, the inner surface of the fixed plate 15 is slidably connected to a rotating shaft 17, the outer surface of the rotating shaft 17 is rotatably connected to a telescopic plate 18, the inner surface of the telescopic plate 18 is rotatably connected to a sliding shaft 19, and the outer surface of the sliding shaft 19 is slidably connected to a pressing block 21. When the cable shakes up and down, the pressing block 21 moves with the cable, and the buffer spring 22 between the pressing block 21 and the fixed plate 15 is stretched, and the telescopic plate 18 is also stretched, and the two ends of the telescopic plate 18 rotate around the rotating shaft 17 and the sliding shaft 19 respectively. When the cable shakes left and right, the pressing block 21 moves with the cable, the buffer spring 22 is stretched, and the telescopic plate 18 is also stretched. At the same time, the rotating shaft 17 moves in the sliding groove 16 and rotates with the length from the top of the telescopic plate 18 to the cable surface as the radius. Similarly, the sliding shaft 19 moves in the sliding groove 20 and rotates with the length from the bottom of the telescopic plate 18 to the cable surface as the radius. A sliding groove 20 is opened in the wall of the pressing block 21. The outer surface of the pressing block 21 is fixedly connected with a buffer spring 22. The outer surface of the buffer spring 22 is fixedly connected to the outer surface of the fixed plate 15. The buffer spring 22 can retract the shaking cable. The outer surface of the draw rope 3 is fixedly connected with a connecting rod 23. The outer surface of the connecting rod 23 is fixedly connected to the outer surface of the pressing block 21. The draw rope 3 is connected to the pressing block 21 through the connecting rod 23, and the pressing block 21 also rises with the draw rope 3.

[0024] Working principle:

[0025] When in use, the operator rotates the screw rod 6 to move the lifting plate 5 threadedly connected to the screw rod 6 on the screw rod 6, and the bottom end of the screw rod 6 is stuck in the ring 1 and is rotatably connected to the ring 1, so that the relative distance between the lifting plate 5 and the ring 1 becomes larger, and the two sides of the lifting plate 5 are blocked by the limit strips 11 to prevent the lifting plate 5 from being driven by the screw 6 to rotate. When the lifting plate 5 rises to the stopper 4 on the draw rope 3 and contacts the second roller 10, the lifting plate 5 will rise and drive the draw rope 3 to rise, and the draw rope 3 passes through the first roller 9 and the second roller 10 when it rises. The roller 10 can reduce the friction between the draw rope 3 and the device. The draw rope 3 is connected to the pressure block 21 through the connecting rod 23, and the pressure block 21 also rises with the lifting plate 5. When the operator lifts all the pressure blocks 21 in the squeezing device 2, a large space is left between the squeezing devices 2. When the operator installs the cable into the wind turbine, the cable can be passed through the ring 1, and then the screw 6 is turned again to make the pressure block 21 squeeze the surface of the cable until the block 4 is no longer in contact with the second roller 10, and a certain length of the draw rope 3 is left outside the lifting plate 5.

[0026] When the operator needs to install this buffer device on multiple cables, after repeating the above operation, the block 7 on the first buffer device can be slid into the slot 8 of the next buffer device. When the block 7 is completely slid into the slot 8, the operator rotates the baffle 12 around the fixing block 13, and then uses the fastening bolts 14 to fix the position of the baffle 12. The baffle 12 blocks the entrance on the slot 8 to prevent the block 7 from sliding out again and causing multiple buffer devices to separate. Then the operator can press the mounting plate 24 against the wall to fix the buffer device.

[0027] When the cable swings up and down, the pressing block 21 moves with the cable, and the buffer spring 22 between the pressing block 21 and the fixed plate 15 is stretched, the telescopic plate 18 is also stretched, and the two ends of the telescopic plate 18 rotate around the rotating shaft 17 and the sliding shaft 19 respectively, and then the buffer spring 22 contracts to reset the pressing block 21, and the cable is also reset; when the cable swings left and right, the pressing block 21 moves with the cable, the buffer spring 22 is stretched, the telescopic plate 18 is also stretched, and at the same time the rotating shaft 17 moves in the sliding groove 16 and rotates with the length from the top of the telescopic plate 18 to the cable surface as the radius, and the sliding shaft 19 similarly moves in the sliding groove 20 and rotates with the length from the bottom of the telescopic plate 18 to the cable surface as the radius, and then the buffer spring 22 contracts to reset the telescopic plate 18 and the pressing block 21, and the cable is also reset.

[0028] Obviously, the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field and related fields without creative work should fall within the scope of protection of the present invention. Structures, devices and operating methods not specifically described and explained in the present invention shall be implemented according to conventional means in the field unless otherwise specified and limited.

Claims

1. A cable buffer device inside a wind turbine generator, comprising a collar (1), characterized in that: The outer surface of the collar (1) is fixedly connected to an extrusion device (2), the outer surface of the extrusion device (2) is fixedly connected to a drawstring (3), the outer surface of the drawstring (3) is fixedly connected to a stopper (4), a lifting plate (5) is arranged outside the stopper (4), the inner surface of the lifting plate (5) is threadedly connected to a screw rod (6), a clamping block (7) is arranged outside the screw rod (6), the outer surface of the clamping block (7) is fixedly connected to the outer surface of the collar (1), and a clamping groove (8) is provided in the wall of the collar (1).

2. A cable buffer device inside a wind turbine according to claim 1, characterized in that: The outer surface of the extrusion device (2) is rotatably connected to a first roller (9), the outer surface of the first roller (9) is rotatably connected to the outer surface of the drawstring (3), the outer surface of the drawstring (3) is rotatably connected to a second roller (10), and the outer surface of the second roller (10) is rotatably connected to the outer surface of the lifting plate (5).

3. The cable buffer device inside a wind turbine according to claim 1, characterized in that: The outer surface of the screw rod (6) is rotatably connected to the outer surface of the collar (1), the outer surface of the collar (1) is fixedly connected to a limit strip (11), the outer surface of the limit strip (11) is slidably connected to the outer surface of the lifting plate (5), and the outer surface of the limit strip (11) is fixedly connected to a mounting plate (24).

4. The cable buffer device inside a wind turbine according to claim 1, characterized in that: The outer surface of the collar (1) is fixedly connected to a fixing block (13), the outer surface of the fixing block (13) is rotatably connected to a baffle (12), the inner surface of the baffle (12) is threadedly connected to a fastening bolt (14), and the outer surface of the fastening bolt (14) is threadedly connected to the inner surface of the collar (1).

5. The cable buffer device inside a wind turbine according to claim 1, characterized in that: The extrusion device (2) comprises a fixed plate (15), a sliding groove (16) is provided in the wall of the fixed plate (15), the inner surface of the fixed plate (15) is slidably connected to a rotating shaft (17), the outer surface of the rotating shaft (17) is rotatably connected to a telescopic plate (18), the inner surface of the telescopic plate (18) is rotatably connected to a sliding shaft (19), and the outer surface of the sliding shaft (19) is slidably connected to a pressing block (21).

6. The cable buffer device inside a wind turbine generator according to claim 5, characterized in that: A sliding groove (20) is provided in the wall of the pressing block (21); a buffer spring (22) is fixedly connected to the outer surface of the pressing block (21); the outer surface of the buffer spring (22) is fixedly connected to the outer surface of the fixing plate (15); the outer surface of the drawstring (3) is fixedly connected to a connecting rod (23); the outer surface of the connecting rod (23) is fixedly connected to the outer surface of the pressing block (21).

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