A wind turbine hub large wire anti-wear device

Abstract

This invention relates to the field of wind turbine hub main cable technology, specifically disclosing a wind turbine hub main cable anti-wear device, comprising a hollow tube, one end of which is connected to a slip ring base. A main cable is connected inside the hollow tube, and a flange is connected to the side wall of the main cable via a gland. The flange is connected to one side of the slip ring base. One end of the hollow tube is fitted with the flange, and a fitting groove is formed on one side of the flange. A pressure ring is connected to the middle of the fitting groove. A deflection rod is hinged to one side of the flange near the opening of the fitting groove. A rack is provided on the side wall of the pressure ring, and the rack meshes with the hinged side wall of the deflection rod. A stop rod is connected to one side of the inner wall of the middle of the fitting groove. The flange in this device can abut against one side of the hollow tube, and then the flange fills the gap between the hollow tube and the slip ring base, preventing the hollow tube from shaking due to gaps. This prevents the inner wall of the opening from contacting and wearing down the main cable, leading to damage to the main cable and its internal wiring.

Description

Technical Field

[0001] This invention relates to the field of wind turbine hub cable technology, and more specifically, to a wind turbine hub cable anti-wear device. Background Technology

[0002] The hub busbar of a wind turbine refers to the various wires on the gearbox of an existing wind turbine that are bundled together and then passed through a hollow tube to connect to external equipment.

[0003] However, there is a certain gap between the existing hollow tube and the slip ring base through which the main wire passes, causing the hollow tube itself to be suspended. This causes the hollow tube to shake during equipment operation due to vibration. At the same time, the slip ring base itself is cast in one piece and its position cannot be changed. The hollow tube itself cannot be lengthened arbitrarily. If the hollow tube is lengthened, the center of gravity will shift outward, causing the vibration generated when the hub rotates to intensify the shaking force of the hollow tube, making it more prone to bending and cracking. Therefore, when the hollow tube shakes, it will approach the side wall of the main wire that is attached to the inside, causing shaking friction, which wears down the main wire and exposes the wires on the inner wall, causing contact wear and damage to the wires. Summary of the Invention

[0004] The purpose of this invention is to provide a wind turbine hub main wire anti-wear device, which solves the problem that the hollow tube, due to the gap between itself and the slip ring base, will shake when the hub rotates, causing the inner wall of the opening to rub against the side wall of the main wire, forcing the main wire to be exposed and causing wear to the wire.

[0005] This invention is achieved through the following technical solution:

[0006] This invention provides a wind turbine hub main cable anti-wear device, including a hollow tube, one end of which is connected to a slip ring base. A main cable is connected inside the hollow tube, and a flange is connected to the side wall of the main cable through a gland. The flange is connected to one side of the slip ring base. One end of the hollow tube is attached to the flange. A fitting groove is opened on one side of the flange. A pressure ring is connected to the middle of the fitting groove. A deflection rod is hinged to one side of the flange near the opening of the fitting groove. A rack is provided on the side wall of the pressure ring. The rack meshes with the hinged side wall of the deflection rod. A stop rod is connected to one side of the inner wall of the middle of the fitting groove.

[0007] Preferably, the bottom of the pressure ring is connected to the bottom of the fitting groove by a spring.

[0008] Preferably, the fitting groove further includes a deflection groove, a connecting groove, a limiting groove, and a threaded inner wall. The deflection groove is formed on one side of the inner wall of the fitting groove, the connecting groove is formed on one side of the middle part of the deflection groove, the limiting groove is formed on both sides of the middle part of the connecting groove, and the threaded inner wall is provided on the inner wall of the connecting groove.

[0009] Preferably, the limiting groove and the inner wall of the thread are segmented and set on the inner wall of the connecting groove.

[0010] Preferably, the deflection rod further includes a lifting block, which is connected to the bottom of the deflection rod by a rope. The lifting block is fitted into a groove on one side of the flange, and a rack is provided on one side of the lifting block.

[0011] Preferably, the abutment rod further includes a displacement rod, a limiting slider, a threaded rod, a transmission rod, a rotating rod, and a transmission groove. The displacement rod is hinged to one side of the abutment rod, the limiting slider protrudes from both sides of the displacement rod, the threaded rod is rotatably connected to one end of the displacement rod, the transmission rod protrudes from the end of the threaded rod away from the displacement rod, the rotating rod is fitted into the end of the transmission rod away from the threaded rod, and the transmission groove is formed at one end of the rotating rod.

[0012] Preferably, the rotating rod is connected to the transmission rod through the bottom transmission groove, the inner wall of the transmission groove is provided with sliding grooves on both sides, and one end of the transmission rod is provided with protrusions that cooperate with the sliding grooves on both sides of the inner wall of the transmission groove.

[0013] Preferably, the sidewall of the rotating rod is threaded to match the inner thread of the threaded rod.

[0014] Preferably, the side wall of the rotating rod is in contact with the side of the lifting block where the rack is located, and the side wall of the rotating rod meshes with the rack on one side of the lifting block.

[0015] Preferably, the bottom of the lifting block is connected to the bottom of the groove on one side of the flange via a spring.

[0016] The technical solution of the present invention has at least the following advantages and beneficial effects:

[0017] 1. The flange installed in this device can press against one side of the hollow tube, and then the flange fills the gap between the hollow tube and the slip ring base, so that the hollow tube does not shake due to the gap, causing the inner wall of the opening to wear down the main wire, resulting in damage to the main wire and internal wiring.

[0018] 2. The device is also equipped with a pressure ring. When the hollow tube is against the flange, the pressure ring is compressed and rotated, thereby causing the deflection rod to deflect and fit against the side wall of the hollow tube, further restricting the hollow tube and making the contact of the hollow tube more stable, without generating outward displacement force.

[0019] 3. The device is also equipped with a stop rod, which can provide some support after the pressure ring moves, instead of relying entirely on the spring for support. This would allow the pressure ring to have room to move downward, resulting in excessive pressure on the deflection rod, which is prone to bending and damage when subjected to force after being stopped. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the overall structure of the present invention.

[0021] Figure 2 This is a top view of the flange structure of the present invention.

[0022] Figure 3 This is a side view sectional structural diagram of the flange of the present invention.

[0023] Figure 4 For the present invention Figure 3 Enlarged diagram of point A in the middle.

[0024] Figure 5 This is a partial side view cross-sectional structural diagram of the flange of the present invention.

[0025] Figure 6 For the present invention Figure 5 Enlarged diagram of point B in the middle.

[0026] Figure 7 For the present invention Figure 5 Enlarged diagram of point C in the middle.

[0027] Reference numerals: 1-Hollow tube, 101-Large wire, 2-Slip ring base, 3-Flange, 301-Matching groove, 3011-Deflection groove, 3012-Connecting groove, 3013-Limiting slide groove, 3014-Threaded inner wall, 302-Pressure ring, 3021-Rack, 303-Deflection rod, 3031-Lifting block, 304-Abutting rod, 3041-Displacement rod, 3042-Limiting slider, 3043-Threaded rod, 3044-Transmission rod, 3045-Rotating rod, 3046-Transmission groove. Detailed Implementation

[0028] The following is combined Figures 1 to 7 The present invention will be described in detail below.

[0029] A wind turbine hub main cable anti-wear device includes a hollow tube 1. One end of the hollow tube 1 is connected to a slip ring base 2. A main cable 101 is connected inside the hollow tube 1. A flange 3 is connected to the side wall of the main cable 101 through a gland. The flange 3 is connected to one side of the slip ring base 2. One end of the hollow tube 1 is attached to the flange 3. A fitting groove 301 is opened on one side of the flange 3. A pressure ring 302 is connected to the middle of the fitting groove 301. A deflection rod 303 is hinged to one side of the flange 3 near the opening of the fitting groove 301. A rack 3021 is provided on the side wall of the pressure ring 302. The rack 3021 meshes with the hinged side wall of the deflection rod 303. A stop rod 304 is connected to one side of the inner wall of the middle part of the fitting groove 301. The bottom of the pressure ring 302 is connected to the bottom of the fitting groove 301 through a spring.

[0030] First, several cables are bundled together to form a large cable 101. Then, the large cable 101 passes through a hollow tube 1 and through a slip ring base 2 to connect to external equipment. At the same time, a flange 3 is connected to the side wall of the large cable 101 via a gland. The flange 3 is then bolted to one side of the slip ring base 2 to fix the large cable 101. Meanwhile, one end of the hollow tube 1 abuts against the flange 3 to restrain the hollow tube 1. This prevents the hollow tube 1 from shaking due to gaps between one end of the hollow tube 1 and the slip ring base 2. During the operation of the motor equipment, the vibration generated by the hollow tube 1 would cause the hollow tube 1 to come into contact with the outer surface of the large cable 101, causing wear and tear on the large cable 101, exposing the wiring inside the large cable 101, and eventually causing the cable insulation to break.

[0031] When the hollow tube 1 is attached to one side of the flange 3, it will abut against the pressure ring 302 in the middle of the fitting groove 301. The force applied during this contact will compress the pressure ring 302, causing it to contract towards the fitting groove 301. As the pressure ring 302 contracts towards the fitting groove 301, the rack 3021 on the side wall will move against one end of the deflection rod 303. Because of the meshing between the hinged end of the deflection rod 303 and the rack 3021, the pressure ring 302 will cause the deflection rod 303 to deflect as it contracts and moves. Until it is 90 degrees close to the outer wall of the hollow tube 1, the deflection rod 303 restricts the contact between the hollow tube 1 and the outer wall of the hollow tube 1. This restricts the hollow tube 1 and also blocks and limits the outer wall of the hollow tube 1, preventing it from easily shaking and making it more stable. During the deflection and contact process, if the hollow tube 1 is not aligned with the center of the flange 3, it will be corrected by the deflection of the deflection rod 303. This prevents the hollow tube 1 from being misaligned due to shaking during the contact with the flange 3, which could cause the hollow tube 1 to bend.

[0032] Meanwhile, the bottom of the pressure ring 302 is connected to the fitting groove 301 by a spring, so that when the flange is disassembled, the pressure ring 302 loses the pressure and will be reset by the spring. When the pressure ring 302 is reset, it will also drive the deflection rod 303 to be reset.

[0033] Furthermore, the fitting groove 301 also includes a deflection groove 3011, a connecting groove 3012, a limiting slide groove 3013, and a threaded inner wall 3014. The deflection groove 3011 is formed on one side of the inner wall of the fitting groove 3011, the connecting groove 3012 is formed on one side of the middle portion of the deflection groove 3011, the limiting slide groove 3013 is formed on both sides of the middle portion of the connecting groove 3012, and the threaded inner wall 3014 is disposed on the inner wall of the connecting groove 3012. The limiting slide groove 3013 and the threaded inner wall 3014 are segmented and disposed on the connecting groove 3012. The inner wall of the groove 3012, the deflection rod 303 also includes a lifting block 3031, the lifting block 3031 is connected to the bottom of the deflection rod 303 by a rope, the lifting block 3031 is fitted into a groove on one side of the flange 3, and a rack is provided on one side of the lifting block 3031. The abutment rod 304 also includes a displacement rod 3041, a limiting slider 3042, a threaded rod 3043, a transmission rod 3044, a rotating rod 3045 and a transmission groove 3046, the displacement rod 3041 is hinged to the abutment rod. On one side of 304, a limiting slider 3042 protrudes from both sides of the displacement rod 3041. A threaded rod 3043 is rotatably connected to one end of the displacement rod 3041. A transmission rod 3044 protrudes from the end of the threaded rod 3043 away from the displacement rod 3041. A rotating rod 3045 is fitted into the end of the transmission rod 3044 away from the threaded rod 3043. A transmission groove 3046 is formed at one end of the rotating rod 3045, and the rotating rod 3045 cooperates with the transmission rod 3044 through the bottom transmission groove 3046. The transmission groove 3046 has sliding grooves on both sides of its inner wall, and one end of the transmission rod 3044 has protrusions on both sides that cooperate with the sliding grooves on both sides of the inner wall of the transmission groove 3046. The side wall of the rotating rod 3045 is threaded to the inner wall 3014. The side wall of the rotating rod 3045 is in contact with the side of the lifting block 3031 where the rack is located, and the side wall of the rotating rod 3045 meshes with the rack on one side of the lifting block 3031. The bottom of the lifting block 3031 is connected to the bottom of the groove on one side of the flange 3 by a spring.

[0034] When the deflecting rod 303 deflects, it pulls on one side of the rope, which in turn pulls the lifting block 3031 to move along the groove. As the lifting block 3031 moves, the rack on one side meshes with the rotating rod 3045, causing the lifting block 3031 to rotate and drive the rotating rod 3045 to rotate. Because the bottom of the rotating rod 3045 is connected to the transmission rod 3044 on the threaded rod 3043 via the transmission groove 3046, the rotation of the rotating rod 3045 causes the threaded rod 3043 to rotate as well. This is because the threaded rod 3043 is connected to the inner wall of the connecting groove 3012. The threaded inner wall 3014 is matched, allowing the threaded rod 3043 to move along the threaded inner wall 3014 during rotation. The transmission rod 3044 retracts into the transmission groove 3046, allowing the threaded rod 3043 to move as it is driven to rotate by the rotating rod 3045. When the threaded rod 3043 moves, it drags the displacement rod 3041, which is rotatably connected at one end, along with it. Because the threaded rod 3043 and the displacement rod 3041 are rotatably connected, and the displacement rod 3041 itself is also fitted into the limiting groove 3013 via the protruding limiting sliders 3042 on both sides, the displacement rod 3043... 41 can be dragged along the ground by the threaded rod 3043, but will not be driven to rotate. Therefore, one end of the displacement rod 3041 can be stably hinged to the abutment rod 304. Because one end of the displacement rod 3041 is hinged to the abutment rod 304, when the displacement rod 3041 is dragged along the ground, it will pull the abutment rod 304 and cause it to deflect and retract into the deflection groove 3011. The bottom of the pressure ring 302 is against the top of the abutment rod 304 in its initial state. Therefore, as the pressure ring 302 is continuously pressed down and continuously affects the deflection rod 303, the deflection rod 303 will also continuously drive the abutment rod 304 to retract. The deflection allows the pressure ring 302 to continue moving downwards. After the hollow tube 1 is completely against one side of the flange 3, the deflection rod 303 cannot deflect further against the side wall of the hollow tube 1, and the abutment rod 304 also cannot deflect further. This provides some support to the pressure ring 302, preventing it from continuing to contract and move. This avoids the pressure ring 302 from being subjected to pressure, which would put pressure on the deflection rod 303 and cause it to deform or be damaged. The abutment rod 304 distributes some of the pressure, and also ensures that the bottom of the pressure ring 302 is not only connected by a spring, but also has support for greater stability.

[0035] Finally, one end of the lifting block 3031 is also connected to the groove on one side of the flange 3 via a spring, so that the lifting block 3031 can be reset by the spring, thereby driving the rotating rod 3045 to reset and rotate, so that the abutment rod 304 can be reset. The rotating rod 3045 itself is rotated in the connecting groove 3012 and will not be dragged to the ground by the reset of the threaded rod 3043.

[0036] The following is a detailed implementation process of the present invention. First, several cables are bundled together to form a large cable 101. Then, the large cable 101 passes through a hollow tube 1 and through a slip ring base 2 to connect to external equipment. At the same time, a flange 3 is connected to the side wall of the large cable 101 through a gland. The flange 3 is bolted to one side of the slip ring base 2 to fix the large cable 101. Meanwhile, one end of the hollow tube 1 abuts against the flange 3 to restrain the hollow tube 1. This prevents the hollow tube 1 from shaking due to the gap between one end of the hollow tube 1 and the slip ring base 2. During the operation of the motor equipment, the vibration generated will cause the hollow tube 1 to come into contact with the outer surface of the large cable 101, causing wear to the large cable 101, exposing the wires inside the large cable 101, and then damaging the cable insulation.

[0037] When the hollow tube 1 is attached to one side of the flange 3, it abuts against the pressure ring 302 in the middle of the fitting groove 301. The force applied during this contact puts pressure on the pressure ring 302, causing it to contract towards the fitting groove 301. As the pressure ring 302 contracts towards the fitting groove 301, the rack 3021 on the side wall moves against one end of the deflection rod 303. Because of the meshing between the hinged end of the deflection rod 303 and the rack 3021, the pressure ring 302, during its contraction and movement, causes the deflection rod 303 to deflect until it reaches 90 degrees and adheres to the outer wall of the hollow tube 1. By limiting the contact between the deflection rod 303 and the outer wall of the hollow tube 1, the hollow tube 1 is subjected to pressure... While limiting the top, it also blocks and limits the outer wall of the hollow tube 1, preventing the hollow tube 1 from easily shaking and making it more stable. During the deflection and fitting process, if the hollow tube 1 is not aligned with the center of the flange 3, it will be corrected by the deflection of the deflection rod 303, preventing the hollow tube 1 from being misaligned due to shaking during the flange fitting process, which would cause the hollow tube 1 to bend. At the same time, the bottom of the pressure ring 302 is connected to the fitting groove 301 through a spring, so that when the flange is removed, the pressure ring 302 loses the pressure and will be reset by the spring. When the pressure ring 302 resets, it will also drive the deflection rod 303 to reset.

[0038] When the deflecting rod 303 deflects, it pulls on one side of the rope, which in turn pulls the lifting block 3031 to move along the groove. As the lifting block 3031 moves, the rack on one side meshes with the rotating rod 3045, causing the lifting block 3031 to rotate and drive the rotating rod 3045 to rotate. Because the bottom of the rotating rod 3045 is connected to the transmission rod 3044 on the threaded rod 3043 via the transmission groove 3046, the rotation of the rotating rod 3045 causes the threaded rod 3043 to rotate as well. This is because the threaded rod 3043 is connected to the inner wall of the connecting groove 3012. The threaded inner wall 3014 is matched, allowing the threaded rod 3043 to move along the threaded inner wall 3014 during rotation. The transmission rod 3044 retracts into the transmission groove 3046, allowing the threaded rod 3043 to move as it is driven to rotate by the rotating rod 3045. When the threaded rod 3043 moves, it drags the displacement rod 3041, which is rotatably connected at one end, along with it. Because the threaded rod 3043 and the displacement rod 3041 are rotatably connected, and the displacement rod 3041 itself is also fitted into the limiting groove 3013 via the protruding limiting sliders 3042 on both sides, the displacement rod 3043... 41 can be dragged along the ground by the threaded rod 3043, but will not be driven to rotate. Therefore, one end of the displacement rod 3041 can be stably hinged to the abutment rod 304. Because one end of the displacement rod 3041 is hinged to the abutment rod 304, when the displacement rod 3041 is dragged along the ground, it will pull the abutment rod 304 and cause it to deflect and retract into the deflection groove 3011. The bottom of the pressure ring 302 is against the top of the abutment rod 304 in its initial state. Therefore, as the pressure ring 302 is continuously pressed down and continuously affects the deflection rod 303, the deflection rod 303 will also continuously drive the abutment rod 304 to retract. The deflection allows the pressure ring 302 to continue moving downwards. After the hollow tube 1 is completely against one side of the flange 3, the deflection rod 303 cannot deflect further against the side wall of the hollow tube 1, and the abutment rod 304 also cannot deflect further. This provides some support to the pressure ring 302, preventing it from continuing to contract and move. This avoids the pressure ring 302 from being subjected to pressure, which would put pressure on the deflection rod 303 and cause it to deform or be damaged. The abutment rod 304 distributes some of the pressure, and also ensures that the bottom of the pressure ring 302 is not only connected by a spring, but also has support for greater stability.

Claims

1. A wind turbine generator hub large wire anti-friction device, comprising a hollow pipe (1), one end of the hollow pipe (1) is close to a slip ring base (2), the inside of the hollow pipe (1) is connected with a large wire (101), characterized in that, The side wall of the main wire (101) is connected to a flange (3) via a gland head. The flange (3) is connected to one side of the slip ring base (2). One end of the hollow tube (1) is attached to the flange (3). A fitting groove (301) is provided on one side of the flange (3). A pressure ring (302) is connected to the middle of the fitting groove (301). A deflection rod (303) is hinged to one side of the flange (3) near the opening of the fitting groove (301). A rack (3021) is provided on the side wall of the pressure ring (302). The rack (3021) meshes with the hinged side wall of the deflection rod (303). A stop rod (304) is connected to one side of the inner wall of the middle part of the fitting groove (301).

2. A wind turbine wheel hub large wire wear protection device according to claim 1, characterized in that, The bottom of the pressure ring (302) is connected to the bottom of the fitting groove (301) by a spring.

3. A wind turbine wheel hub large wire wear protection device according to claim 1, wherein, The fitting groove (301) further includes a deflection groove (3011), a connecting groove (3012), a limiting slide groove (3013), and a threaded inner wall (3014). The deflection groove (3011) is formed on one side of the inner wall of the fitting groove (301), the connecting groove (3012) is formed on one side of the middle part of the deflection groove (3011), the limiting slide groove (3013) is formed on both sides of the middle part of the connecting groove (3012), and the threaded inner wall (3014) is provided on the inner wall of the connecting groove (3012).

4. A wind turbine wheel hub large wire wear protection device according to claim 3, wherein, The limiting groove (3013) and the threaded inner wall (3014) are segmented and arranged on the inner wall of the connecting groove (3012).

5. A wind turbine wheel hub large wire wear protection device according to claim 1, wherein, The deflection rod (303) also includes a lifting block (3031), which is connected to the bottom of the deflection rod (303) by a rope. The lifting block (3031) is fitted into a groove on one side of the flange (3), and a rack is provided on one side of the lifting block (3031).

6. A wind turbine wheel hub large wire wear protection device according to claim 1, wherein, The abutment rod (304) further includes a displacement rod (3041), a limiting slider (3042), a threaded rod (3043), a transmission rod (3044), a rotating rod (3045), and a transmission groove (3046). The displacement rod (3041) is hinged to one side of the abutment rod (304). The limiting slider (3042) protrudes from both sides of the displacement rod (3041). The threaded rod (3043) is rotatably connected to one end of the displacement rod (3041). The transmission rod (3044) protrudes from the end of the threaded rod (3043) away from the displacement rod (3041). The rotating rod (3045) is fitted into the end of the transmission rod (3044) away from the threaded rod (3043). The transmission groove (3046) is formed at one end of the rotating rod (3045).

7. The anti-wear device for the hub cable of a wind turbine according to claim 6, characterized in that, The rotating rod (3045) is connected to the transmission rod (3044) through the bottom transmission groove (3046). The inner wall of the transmission groove (3046) is provided with sliding grooves on both sides, and one end of the transmission rod (3044) is provided with protrusions that cooperate with the sliding grooves on both sides of the inner wall of the transmission groove (3046).

8. A wind turbine hub anti-wear device according to claim 6, characterized in that, The sidewall of the rotating rod (3045) is threadedly matched with the inner thread wall (3014).

9. A wind turbine hub anti-wear device according to claim 6, characterized in that, The side wall of the rotating rod (3045) is in contact with the side of the lifting block (3031) where the rack is located, and the side wall of the rotating rod (3045) meshes with the rack on one side of the lifting block (3031).

10. A wind turbine hub anti-wear device according to claim 5, characterized in that, The bottom of the lifting block (3031) is connected to the bottom of the groove on one side of the flange (3) by a spring.

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