Turning transmission device of wind driven generator and use method of turning transmission device

Abstract

The invention relates to the field of transmission clutch equipment, in particular to a wind driven generator barring transmission device and a using method thereof.The wind driven generator barring transmission device comprises a rack and a mounting frame, the mounting frame is fixed in the rack, a transmission cylinder and a barring cylinder which are vertically arranged are arranged in the middle of the rack, and the barring cylinder is located below the transmission cylinder; an upper support for supporting the transmission cylinder to rotate and a lower support for supporting the turning cylinder to rotate are fixed on the mounting frame, and a transmission shaft extending into the transmission cylinder is vertically arranged in the turning cylinder in a sliding manner. The hydraulic coupler has the beneficial effects that the transmission shaft movable teeth and the transmission cylinder fixed teeth are in vertical sliding meshing, mechanical clamping stable torque transmission is achieved during combination, rapid separation is achieved during separation, frequent separation and reunion are adapted, impact is reduced, a lubricating oil cavity actively controls oil through volume change, oil is pumped to lubricate the clamping teeth and the hydraulic coupler during turning, and oil is returned through negative pressure during separation to avoid residues; and end shaft rotation resistance is eliminated.

Description

Technical Field

[0001] The present invention relates to the field of transmission clutch devices, and particularly to a barring gear transmission device for a wind turbine and a using method thereof. Background Art

[0002] Due to the large self-weights of the blades and the main shaft of a wind turbine, and the influence of external wind forces on its rotating state, when the wind force is insufficient to start the fan blades in the parked state, it is usually necessary to slowly drive the rotation of the fan shaft through a barring gear transmission device. Its main function is to prevent the deformation of the main shaft. The main shaft of the wind turbine is relatively long and has a large mass. If it remains stationary for a long time, due to the action of its own gravity, uneven deformation of the main shaft may occur. By slowly rotating the main shaft through the barring gear device, the various parts of the main shaft can be evenly stressed, avoiding permanent bending deformation caused by long-term stillness, ensuring the straightness and mechanical properties of the main shaft, and extending the service life of the main shaft. In addition, when the fan shaft is stationary, its bearings bear the weight of the entire rotor system. Staying in the same position for a long time will cause excessive local stress on the bearings, easily resulting in wear, fatigue, and even damage of the bearings. The barring gear transmission device slowly rotates the fan shaft, enabling the rolling elements and raceways of the bearings to be evenly contacted, avoiding local excessive wear, and ensuring the normal operation and service life of the bearings.

[0003] Therefore, the barring gear device plays an important role in wind turbines. Since the barring gear device is in transmission connection with the fan shaft during use and needs to be disconnected from the fan shaft when idle, and a large torque needs to be transmitted, the current transmission equipment mostly uses a clamping clutch, which has high reliability. Since most wind turbines are installed in the wild, in order to reduce the wear of the clutch and thus extend the maintenance cycle during barring, lubricating oil is mostly used for combination and separation lubrication. However, the lubricating oil of such clutches is always filled between the end shaft and the transmission shaft. When the clutch is in the separated state, the internal oil will cause rotational resistance to the continuously rotating end shaft, consuming the rotational energy of the fan main shaft, and causing the lubricating oil to heat up, requiring the activation of an oil cooling system, which affects the power generation effect. Summary of the Invention

[0004] The purpose of the present invention is to provide a barring gear transmission device for a wind turbine and a using method thereof to solve the above problems. The movable teeth of the transmission shaft and the fixed teeth of the transmission cylinder are vertically slidably engaged. When combined, the mechanical clamping is stable for torque transmission. When separated, it quickly disengages, adapting to frequent engagement and disengagement, reducing impact. The lubricating oil chamber actively controls the oil through volume change. During barring, it pumps oil to lubricate the engaging teeth and the hydraulic coupling. When separated, negative pressure returns the oil to avoid residue, eliminating the rotational resistance of the end shaft. See the following for details.

[0005] To achieve the above object, the present invention provides the following technical solutions: A turning gear transmission device for a wind turbine provided by the present invention includes a frame and a mounting frame. The mounting frame is fixed inside the frame. A driving cylinder and a turning cylinder arranged vertically are provided in the middle of the frame. The turning cylinder is located below the driving cylinder. An upper support for supporting the rotation of the driving cylinder and a lower support for supporting the rotation of the turning cylinder are fixed on the mounting frame. A transmission shaft extending vertically into the driving cylinder is slidably arranged vertically in the turning cylinder. The transmission shaft includes an upper shaft rod extending vertically. A turbine is fixed at the top end of the upper shaft rod. Movable teeth are arranged on the outer circumference of the turbine. Fixed teeth adapted to the movable teeth are arranged on the inner wall of the driving cylinder. The fixed teeth and the movable teeth are vertically slidably engaged to form a clamping clutch mechanism. A piston disk slidably arranged vertically in the turning cylinder is fixed outside the upper shaft rod. A cushion disk is arranged below the piston disk. A lubricating oil cavity communicating with the lower support is formed in the turning cylinder between the cushion disk and the piston disk. A pumping pipe communicating with the upper support is arranged outside the lower support.

[0006] Preferably, the cross-section of the upper shaft rod is a regular polygon. A sliding hole slidably adapted to the upper shaft rod is vertically penetrated through the top of the turning cylinder. A lower side hole is arranged on the outer circumference of the turning cylinder. A limiting rod extending vertically is fixed on the cushion disk. The limiting rod vertically penetrates through the inner edge of the bottom end of the turning cylinder, and the limiting rod is in clearance fit with the inner edge of the bottom end of the turning cylinder. A limiting spring for keeping the cushion disk tightly supported upward is sleeved outside the limiting rod.

[0007] Preferably, an upper side hole communicating with the upper support is arranged on the outer circumference of the driving cylinder. A ring-shaped pump impeller is fixed on the inner wall of the driving cylinder below the fixed teeth. The pump impeller and the turbine form a hydraulic coupling mechanism. An annular sealing groove is arranged on the inner edge of the bottom end of the driving cylinder. A retaining ring is fixed outside the upper shaft rod. A sealing disk is arranged above the retaining ring. A tightening spring pressing against the bottom side of the turbine is arranged above the sealing disk.

[0008] Preferably, the sealing disk includes an inner ring and an outer ring in rotational fit. The inner ring is fixedly connected with the upper shaft rod, and a sealing ring capable of being hermetically embedded in the sealing groove is fixed on the bottom side of the outer ring. A lower shaft rod extending vertically is fixed at the bottom end of the upper shaft rod. A transmission sleeve for accommodating the lower shaft rod to extend into is rotatably arranged at the bottom of the frame. A plurality of vertically extending constraint grooves are arranged around the outer circumference of the lower shaft rod. A constraint block slidably and vertically adapted to the constraint grooves is fixed inside the transmission sleeve. A reduction motor for driving the transmission sleeve to rotate is fixed at the bottom of the frame.

[0009] Preferably, a guide wheel with a grooved wheel structure is fixed to the outside of the bottom end of the upper shaft rod, a lower support ring is rotatably sleeved on the outside of the guide wheel, and longitudinally extending lower support rods are fixed to the front and rear sides of the outside of the lower support ring. A vertically extending end shaft is fixed to the top of the transmission cylinder, and a transversely extending fan shaft is rotatably provided on the top of the frame. The fan shaft and the end shaft are connected via a bevel gear transmission mechanism.

[0010] Preferably, a generator shaft is rotatably provided on one side of the frame away from the fan shaft, a generator which is transmission-connected to the generator shaft is fixed on the outside of the frame, an upper support ring is connected between the generator shaft and the fan shaft, a connecting shaft supporting the upper support ring is fixed on one end of the fan shaft close to the generator shaft, a plurality of groups of active blocks are fixed around the outer end of the connecting shaft, and the upper support ring is sleeved on the outside of the connecting shaft and is loosely matched with the connecting shaft.

[0011] Preferably, a plurality of groups of annular teeth extending laterally along the gap between adjacent active blocks are fixed around the end of the upper support ring, upper support rods are longitudinally fixed on the front and rear sides of the upper support ring, a retaining spring that presses against the upper support ring is sleeved on the outer side of the connecting shaft, a plurality of groups of driven blocks are fixed around the end of the generating shaft, the annular teeth extend laterally between adjacent driven blocks, and the annular teeth cooperate with the active block and the driven block to form a transmission coupling.

[0012] Preferably, multiple groups of first magnets are fixed to the outer end of the annular teeth, and multiple groups of second magnets are fixed to the outer end of the driven block, the first magnets correspond to the second magnets one-to-one and the relative surfaces have the same magnetic properties, so that the annular teeth and the driven block can be assisted by magnetism to maintain an alternating corresponding state, and the edge of the outer end of the driven block is chamfered.

[0013] Preferably, an L-shaped swing arm is arranged inside the mounting frame, and an adjustment portion supporting the rotation of the swing arm is hinged in the middle of the mounting frame. A lower guide groove that is clearance-matched with the lower support rod is longitudinally penetrated through the bottom end of the swing arm, and the lower guide groove extends laterally. An upper guide groove that is clearance-matched with the upper support rod is longitudinally penetrated through the top end of the swing arm, and the upper guide groove extends vertically. A traction shaft that is rotatably connected to the telescopic end of the adjustment portion is fixed in the middle of the swing arm.

[0014] The method for using the wind turbine generator turning gear transmission device comprises the following steps: a. When the fan shaft is decelerating to the point of stopping and needs to be driven by a crank, the adjusting part is used to pull the swing arm to rotate under the support of the mounting frame, and the lower guide groove at the bottom of the swing arm pushes the lower support rod downward, thereby pulling the transmission shaft downward as a whole. At the same time, the upper guide groove at the top of the swing arm pushes the upper support rod to move horizontally, and the upper support ring is used to push the retaining spring to generate compression, so that the annular teeth of the synchronizer ring are disengaged from the driven block of the generator shaft, so as to disconnect the transmission connection position between the fan shaft and the generator; b. During the overall downward movement of the transmission shaft, the upper shaft rod drives the piston disc to squeeze the lubricating oil chamber space, so as to send the lubricating oil into the transmission cylinder along the lower side hole, lower support, pumping pipe, upper support and upper side hole. When the piston disc moves down to contact the cushion disc, the pumping of the lubricating oil into the transmission cylinder is completed. At this time, the upper shaft rod drives the turbine and the movable gear to move down to the critical meshing position with the fixed gear. At the same time, the transmission cylinder is in a continuous rotation state under the driving of the bevel gear meshing between the end shaft and the fan shaft, that is, the pump wheel rotates continuously with the transmission cylinder. The pump wheel is used to drive the lubricating oil to rotate continuously, and a hydraulic coupling is formed by the cooperation of the pump wheel, the lubricating oil and the turbine, so as to start the rotation of the overall transmission shaft; c. Continue to use the adjusting part to push the swing arm to rotate, and use the bottom end of the swing arm to pull down the overall transmission shaft to move down, and engage the movable gear at the top of the upper shaft rod into the gap position of the fixed gear on the inner wall of the transmission cylinder to complete the locking transmission of the clamping clutch. Then use the reduction motor to drive the transmission sleeve to rotate, drive the lower shaft rod to rotate through the transmission sleeve, and then maintain the rotational driving state of the turning cylinder on the transmission cylinder to complete the turning process; d. When it is necessary to stop the turning state and connect the fan shaft and the power generation shaft, use the telescopic end of the adjusting part to extend to support the swing arm to rotate back to its original position and push the transmission shaft upward. Since the limiting spring under the cushion disc is in a compressed state, during the synchronous upward movement of the cushion disc, the piston disc, the upper shaft rod and the movable gear, at this time, the cushion disc and the piston disc are still in a tightly pressed state, that is, there is no oil return in the lubricating oil chamber at this time. At the same time, the movable gear moves upward and disengages from the fixed gear to ensure that the lubricating oil in the transmission cylinder is still full when the clamping clutch in the transmission cylinder is separated; e. After the movable gear moves upward and disengages from the fixed gear, the transmission shaft continues to move upward. At this time, the limiting spring completely returns to its natural length, that is, the cushion disc cannot continue to move upward with the piston disc, and the volume of the lubricating oil chamber continues to expand. The lubricating oil in the negative pressure state of the lubricating oil chamber is used to cooperate with the upper support and the lower support to send the lubricating oil downward along the pumping pipe and back into the lubricating oil chamber to discharge the lubricating oil in the transmission cylinder. At the same time, the upper support ring is pushed towards the power generation shaft under the support of the swing arm, and the annular teeth of the synchronous ring are engaged into the driven clamping block by the repulsive force of the two magnets, so as to engage the transmission state of the power generation shaft and the fan shaft while the transmission state in the transmission cylinder is released.

[0015] The beneficial effects are as follows: 1. In the present invention, the movable gear of the transmission shaft and the fixed gear of the transmission cylinder adopt a vertical sliding meshing design. When combined, the torque is transmitted through mechanical clamping to ensure stable power transmission; when separated, they can be quickly disengaged to avoid interference of rigid connection, adapt to frequent clutch working conditions, and reduce mechanical impact; 2. The lubricating oil cavity formed between the piston disc and the cushion disc actively controls the circulation of the oil fluid in the drive cylinder and the turning gear cylinder through volume change. During turning, the piston disc moves downward to squeeze the oil cavity, and the lubricating oil is transported to the drive cylinder through the pumping pipe to lubricate the engaging tooth surfaces and provide working oil for the hydraulic coupling. When separating, the piston disc moves upward, and the lubricating oil cavity sucks back the oil fluid in the drive cylinder under negative pressure, avoiding the residual oil fluid in the separated state, avoiding the resistance of the lubricating oil to the rotation of the end shaft, and improving the power generation effect. 3. The hydraulic coupling composed of the pump impeller and the turbine uses the kinetic energy of the oil fluid to transmit torque during turning start-up to achieve soft start and reduce the impact of gear engagement. In the separated state, the lubricating oil is automatically discharged to release the hydraulic coupling state, and the turbine and the pump impeller are naturally decoupled, prolonging the service life of the equipment. 4. The coupling composed of the upper support ring, the annular teeth and the driving and driven blocks realizes the quick connection and disconnection of the fan shaft and the power generation shaft through the push of the swing arm. The first magnet at the end of the annular teeth and the second magnet of the driven block use the principle of like poles repelling each other to assist the annular teeth to maintain the staggered alignment with the driven block during separation, reducing mechanical collision wear. Combining with the chamfer design of the driven block, it ensures that the annular teeth can smoothly engage when reset, improving the alignment accuracy and operation reliability of the clutch mechanism. 5. The swing arm is connected to the lower strut and the upper strut through the lower guide groove and the upper guide groove respectively, and synchronously controls the up and down movement of the transmission shaft and the lateral displacement of the upper support ring under the drive of the adjusting part. During turning, the connection between the fan shaft and the power generation shaft is first disconnected, and then the transmission shaft is engaged. During separation, the turning state is first released, and then the upper support ring is pushed back to reset through the retaining spring to restore the connection of the power generation system, ensuring that the clutch, lubrication, and transmission switching actions are coordinated in sequence to avoid interference. Brief Description of the Drawings

[0016] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the following drawings are only some embodiments of the present invention. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0017] Figure 1 is the front view structure diagram of the present invention; Figure 2 is the three-dimensional structure schematic diagram of the present invention; Figure 3 is the partial structure split schematic diagram of the present invention; Figure 4 is the overall structure split schematic diagram of the present invention; Figure 5 is the three-dimensional structure schematic diagram of the end shaft of the present invention; Figure 6 is the structure split schematic diagram of the transmission shaft of the present invention; Figure 7 is the partial front elevation sectional view of the present invention; Figure 8 is the front elevation sectional view of the transmission cylinder of the present invention; Figure 9 is the front elevation sectional view of the barring gear cylinder of the present invention; Figure 10 is the three-dimensional structure schematic diagram of the mounting bracket of the present invention; Figure 11 is the three-dimensional structure schematic diagram of the upper support ring of the present invention; Figure 12 is the three-dimensional structure schematic diagram of the fan shaft of the present invention; Figure 13 is the three-dimensional structure schematic diagram in another direction of the present invention.

[0018] The description of the reference numerals is as follows: 1, frame; 2, mounting bracket; 201, rotating seat; 202, rotating ear; 3, transmission cylinder; 301, upper side hole; 302, fixed tooth; 303, pump impeller; 304, sealing groove; 4, end shaft; 5, fan shaft; 501, connecting shaft; 502, active chuck; 6, barring gear cylinder; 601, sliding hole; 602, lower side hole; 7, transmission shaft; 701, upper shaft rod; 701a, retaining ring; 702, piston disc; 703, turbine; 704, movable tooth; 705, cushion disc; 705a, limiting rod; 705b, limiting spring; 706, sealing disc; 706a, tightening spring; 706b, sealing ring; 707, guide wheel; 707a, lower support ring; 707b, lower support rod; 708, lower shaft rod; 708a, restraining groove; 8, transmission sleeve; 801, restraining block; 9, upper support ring; 901, synchronizing ring; 902, annular tooth; 903, upper support rod; 904, retaining spring; 905, first magnet; 10, lower support; 10a, pumping pipe; 11, upper support; 12, swing arm; 12a, lower guide groove; 12b, upper guide groove; 12c, traction shaft; 13, adjusting part; 14, reduction motor; 15, generator; 16, generator shaft; 16a, driven chuck; 16b, second magnet. Detailed Description of the Invention

[0019] In order to make the objectives, technical solutions and advantages of the present invention clearer, the technical solutions of the present invention will be described in detail below. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the scope of protection of the present invention.

[0020] Refer to Figures 1-13As shown in the figure, the present invention provides a turning gear transmission device for a wind turbine, which includes a frame 1 and a mounting frame 2. The mounting frame 2 is fixed inside the frame 1. A transmission cylinder 3 and a turning cylinder 6 arranged vertically are provided in the middle of the frame 1. The turning cylinder 6 is located below the transmission cylinder 3. An upper support 11 for supporting the rotation of the transmission cylinder 3 and a lower support 10 for supporting the rotation of the turning cylinder 6 are fixed on the mounting frame 2. A transmission shaft 7 that extends vertically into the transmission cylinder 3 is slidably arranged inside the turning cylinder 6. The transmission shaft 7 serves as a transmission component for driving the transmission cylinder 3 and the turning cylinder 6 to rotate synchronously to achieve the turning operation. The transmission shaft 7 includes an upper shaft rod 701 that extends vertically. A turbine 703 is fixed at the top end of the upper shaft rod 701. Movable teeth 704 are arranged on the outer circumference of the turbine 703. Fixed teeth 302 adapted to the movable teeth 704 are arranged on the inner wall of the transmission cylinder 3. The fixed teeth 302 and the movable teeth 704 are vertically slidably engaged to form a clamping clutch mechanism. A piston disk 702 that is vertically slidably arranged inside the turning cylinder 6 is fixed outside the upper shaft rod 701. A cushion disk 705 is arranged below the piston disk 702. The cushion disk 705 is vertically slidably sealed with the inner wall of the turning cylinder 6. A lubricating oil cavity communicating with the lower support 10 is formed inside the turning cylinder 6 between the cushion disk 705 and the piston disk 702. Lubricating oil that can be pumped into the transmission cylinder 3 is stored in the lubricating oil cavity. A pumping pipe 10a communicating with the upper support 11 is arranged outside the lower support 10.

[0021] As an optional implementation manner, the cross-section of the upper shaft rod 701 is a regular polygon. A sliding hole 601 that slidably fits the upper shaft rod 701 is vertically penetrated at the top of the turning cylinder 6 to ensure the synchronous rotation of the turning cylinder 6 and the upper shaft rod 701. A lower side hole 602 is arranged on the outer circumference of the turning cylinder 6. A limiting rod 705a that extends vertically is fixed on the cushion disk 705. The limiting rod 705a vertically penetrates the inner edge of the bottom end of the turning cylinder 6, and there is a clearance fit between the limiting rod 705a and the inner edge of the bottom end of the turning cylinder 6. A limiting spring 705b for keeping the cushion disk 705 tightly supported upward is sleeved outside the limiting rod 705a to ensure that the cushion disk 705 can compress the limiting spring 705b downward after being subjected to the downward pressure of the piston disk 702, and then move the cushion disk 705 and the piston disk 702 downward synchronously to achieve the locking engagement of the upper movable teeth 704 and the fixed teeth 302. An upper side hole 301 communicating with the upper support 11 is arranged on the outer circumference of the transmission cylinder 3. A ring-shaped pump wheel 303 is fixed on the inner wall of the transmission cylinder 3 below the fixed teeth 302. The pump wheel 303 and the turbine 703 form a fluid coupling mechanism, which is a prior art in this field and will not be elaborated here. A ring-shaped sealing groove 304 is arranged on the inner edge of the bottom end of the transmission cylinder 3. A retaining ring 701a is fixed outside the upper shaft rod 701. A sealing disk 706 is arranged above the retaining ring 701a. A tension spring 706a that abuts against the bottom side of the turbine 703 is arranged above the sealing disk 706. In addition, the sealing disc 706 includes a rotatably fitted inner ring and outer ring. The inner ring is fixedly connected to the upper shaft rod 701, and a sealing ring 706b capable of being hermetically embedded in the sealing groove 304 is fixed to the bottom side of the outer ring. When the movable teeth 704 are separated from the fixed teeth 302, the retaining ring 701a supports the sealing disc 706 upward to ensure that the sealing ring 706b of the sealing disc 706 is in a separated state from the sealing groove 304, thereby avoiding obstruction of the rotation of the transmission cylinder 3 by the sealing disc 706. During the downward movement of the movable teeth 704 following the upper shaft rod 701, the sealing disc 706 synchronously moves downward under the pushing action of the tightening spring 706a until the sealing disc 706 abuts against the inner edge of the bottom end of the transmission cylinder 3, and the sealing strip is embedded in the sealing groove 304, completing the closing process of the sealing disc 706 for the bottom end of the transmission cylinder 3 to ensure the airtight effect of the subsequent lubricating oil injection; a vertically extending lower shaft rod 708 is fixed to the bottom end of the upper shaft rod 701, and a transmission sleeve 8 for accommodating the lower shaft rod 708 to extend therein is rotatably provided at the bottom of the frame 1. A plurality of vertically extending restraint grooves 708a are circumferentially arranged around the outer circumference of the lower shaft rod 708, and a restraint block 801 vertically slidably adapted to the restraint grooves 708a is fixed inside the transmission sleeve 8. A reduction motor 14 for driving the rotation of the transmission sleeve 8 is fixed to the bottom of the frame 1 to ensure that the lower shaft rod 708 can maintain a transmission connection state with the transmission sleeve 8 during the lifting and lowering movement; A guide wheel 707 with a sheave structure is fixed to the outside of the bottom end of the upper shaft rod 701. An under-holding ring 707a is rotatably sleeved outside the guide wheel 707. Longitudinally extending lower support rods 707b are fixed to both the front and rear sides of the outside of the under-holding ring 707a. A vertically extending end shaft 4 is fixed to the top of the transmission cylinder 3. A horizontally extending fan shaft 5 is rotatably provided at the top of the frame 1. The fan shaft 5 and the end shaft 4 are connected by a bevel gear transmission mechanism; A power generation shaft 16 is rotatably provided on one side of the frame 1 away from the fan shaft 5. A generator 15 drivingly connected to the power generation shaft 16 is fixed to the outside of the frame 1. An upper-holding ring 9 is connected between the power generation shaft 16 and the fan shaft 5. The upper-holding ring 9 serves as a transmission component between the fan shaft 5 and the power generation shaft 16. A connecting shaft 501 for supporting the upper-holding ring 9 is fixed to one end of the fan shaft 5 close to the power generation shaft 16. A plurality of groups of driving blocks 502 are circumferentially fixed to the outer end of the connecting shaft 501. The upper-holding ring 9 is sleeved outside the connecting shaft 501 and is in clearance fit with the connecting shaft 501 to ensure that the upper-holding ring 9 can laterally slide outside the connecting shaft 501; A plurality of annular teeth 902 extending transversely along the gaps between adjacent active clamping blocks 502 are fixedly arranged around the end of the upper supporting ring 9. Upper supporting rods 903 are longitudinally fixed on both the front and rear sides of the upper supporting ring 9. A retaining spring 904 pressing against the upper supporting ring 9 is sleeved outside the connecting shaft 501. A plurality of driven clamping blocks 16a are fixedly arranged around the end of the power generation shaft 16. The annular teeth 902 extend transversely between adjacent driven clamping blocks 16a. The annular teeth 902 cooperate with the active clamping blocks 502 and the driven clamping blocks 16a to form a transmission coupling, ensuring that the rotational movement of the fan shaft 5 can be transmitted to the power generation shaft 16 through the annular teeth 902, and then the power generation shaft 16 is used to drive the generator 15 to work; A plurality of first magnets 905 are fixedly arranged at the outer ends of the annular teeth 902. A plurality of second magnets 16b are fixedly arranged at the outer ends of the driven clamping blocks 16a. The first magnets 905 and the second magnets 16b are in one-to-one correspondence and have the same magnetic poles on the opposite faces, so as to use the repulsive magnetic force to assist the annular teeth 902 and the driven clamping blocks 16a to maintain an interleaved corresponding state. Moreover, the outer edge of the end of the driven clamping block 16a is chamfered to facilitate the smooth engagement of the annular teeth 902 with the driven clamping blocks 16a when the annular teeth 902 move horizontally; An L-shaped swing arm 12 is arranged inside the mounting frame 2. An adjusting part 13 for supporting the rotation of the swing arm 12 is hinged in the middle of the mounting frame 2. The adjusting part 13 is an electric push rod or a cylinder. A lower guide groove 12a with a clearance fit with the lower supporting rod 707b runs longitudinally through the bottom end of the swing arm 12, and the lower guide groove 12a extends transversely. An upper guide groove 12b with a clearance fit with the upper supporting rod 903 runs longitudinally through the top end of the swing arm 12, and the upper guide groove 12b extends vertically. A traction shaft 12c rotatably connected to the telescopic end of the adjusting part 13 is fixed in the middle of the swing arm 12. A rotating ear 202 for supporting the rotation of the swing arm 12 is fixed on the top side in the middle of the mounting frame 2, and a rotating seat 201 for supporting the rotation of the adjusting part 13 is fixed on the bottom side in the middle of the mounting frame 2.

[0022] The present invention also discloses a usage method of the barring gear transmission device for a wind turbine generator, including the following steps: a. When it is necessary to drive the fan shaft 5 by barring during the process of the deceleration of the fan shaft 5 to near stop, the adjusting part 13 is used to pull the swing arm 12 to rotate under the support of the mounting frame 2. The lower guide groove 12a at the bottom end of the swing arm 12 pushes the lower supporting rod 707b downward, thereby pulling the entire transmission shaft 7 to move downward. At the same time, the upper guide groove 12b at the top end of the swing arm 12 pushes the upper supporting rod 903 to move horizontally, and the upper supporting ring 9 is used to push the retaining spring 904 to be compressed, so as to disengage the annular teeth 902 of the synchronizing ring 901 from the driven clamping blocks 16a of the power generation shaft 16, and disconnect the transmission connection position between the fan shaft 5 and the generator 15; b. During the overall downward movement of the transmission shaft 7, the upper shaft rod 701 drives the piston disk 702 to squeeze the lubricating oil chamber space, so as to send the lubricating oil into the transmission cylinder 3 along the lower side hole 602, the lower support 10, the pumping pipe 10a, the upper support 11 and the upper side hole 301. When the piston disk 702 moves downward to the position of the contact cushion disk 705, the pumping of the lubricating oil into the transmission cylinder 3 is completed. At this time, the upper shaft rod 701 drives the turbine 703 and the movable tooth 704 to move downward to the critical meshing position with the fixed tooth 302. At the same time, the transmission cylinder 3 is in a continuous rotating state under the driving of the bevel gear meshing between the end shaft 4 and the fan shaft 5, that is, the pump impeller 303 rotates continuously with the transmission cylinder 3. The pump impeller 303 is used to drive the lubricating oil to rotate continuously. A fluid coupling is formed by the cooperation of the pump impeller 303, the lubricating oil and the turbine 703, so as to start the rotation of the overall transmission shaft 7; c. Continue to use the adjusting part 13 to push the swing arm 12 to rotate, and use the bottom end of the swing arm 12 to pull down the overall transmission shaft 7 to move downward, and engage and clamp the movable tooth 704 at the top end of the upper shaft rod 701 into the gap position of the fixed tooth 302 on the inner wall of the transmission cylinder 3 to complete the locking transmission of the clamping clutch. Then use the reduction motor 14 to drive the transmission sleeve 8 to rotate, drive the lower shaft rod 708 to rotate through the transmission sleeve 8, and then maintain the rotational driving state of the turning gear cylinder 6 on the transmission cylinder 3 to complete the turning gear process; d. When it is necessary to stop the turning gear state and connect the fan shaft 5 and the power generation shaft 16, use the telescopic end of the adjusting part 13 to extend to support the swing arm 12 to rotate back to its original position and push the transmission shaft 7 upward. Since the limiting spring 705b under the cushion disk 705 is in a compressed state, during the synchronous upward movement of the cushion disk 705, the piston disk 702, the upper shaft rod 701 and the movable tooth 704, at this time, the cushion disk 705 and the piston disk 702 are still in a tightly pressed state, that is, there is no oil return in the lubricating oil chamber at this time. At the same time, the movable tooth 704 moves upward and disengages from the fixed tooth 302 to ensure that the lubricating oil in the transmission cylinder 3 is still full when the clamping clutch in the transmission cylinder 3 is disengaged; e. After the movable tooth 704 moves upward and disengages from the fixed tooth 302, the transmission shaft 7 continues to move upward. At this time, the limiting spring 705b completely returns to its natural length, that is, the cushion disk 705 cannot continue to move upward with the piston disk 702, and the volume in the lubricating oil chamber continues to expand. The lubricating oil chamber in the negative pressure state is used to cooperate with the upper support 11 and the lower support 10 to send the lubricating oil downward along the pumping pipe 10a to flow back into the lubricating oil chamber to discharge the lubricating oil in the transmission cylinder 3. At the same time, the upper retaining ring 9 is pushed by the swing arm 12 to move toward the power generation shaft 16. Using the repulsive force of the magnets on both sides, the annular teeth 902 of the auxiliary synchronous ring 901 are engaged into the driven engaging block 16a to engage the transmission state of the power generation shaft 16 and the fan shaft 5 while the transmission state in the transmission cylinder 3 is released.

[0023] The movable teeth 704 of the transmission shaft 7 and the fixed teeth 302 of the transmission cylinder 3 adopt a vertical sliding engagement design. When combined, the torque is transmitted through mechanical engagement to ensure stable power transmission. When separated, they can be quickly disengaged to avoid rigid connection interference, adapt to frequent clutch conditions, and reduce mechanical shock. The lubricating oil chamber formed between the piston plate 702 and the pad plate 705 actively controls the oil to circulate in the transmission cylinder 3 and the cranking cylinder 6 through volume changes. When cranking, the piston plate 702 moves downward to squeeze the oil chamber, and the lubricating oil is transported to the transmission cylinder 3 through the pumping pipe 10a to lubricate the engaging tooth surface and provide working oil for the hydraulic coupler; when separating, the piston plate 702 moves upward, and the negative pressure of the lubricating oil chamber is used to refill the oil in the transmission cylinder 3, so as to avoid oil residue in the separation state and avoid the lubricating oil from forming resistance to the rotation of the end shaft 4, thereby improving the power generation effect; The hydraulic coupling composed of the pump wheel 303 and the turbine 703 uses the kinetic energy of the oil to transmit torque during cranking and start, thus achieving soft start and reducing the impact of gear engagement; in the separated state, the lubricating oil is automatically discharged to release the hydraulic coupling state, and the turbine 703 and the pump wheel 303 are naturally decoupled, thus extending the service life of the equipment; The coupling composed of the upper support ring 9, the annular teeth 902 and the master and slave clamping blocks 16a is pushed by the swing arm 12 to realize the rapid connection and disconnection of the fan shaft 5 and the power generation shaft 16. The first magnet 905 at the end of the annular teeth 902 and the second magnet 16b of the slave clamping block 16a use the principle of like charges repelling each other to assist the annular teeth 902 to maintain the staggered alignment with the slave clamping block 16a during separation, thereby reducing mechanical collision wear; combined with the chamfer design of the slave clamping block 16a, it is ensured that the annular teeth 902 can be smoothly engaged during resetting, thereby improving the alignment accuracy and operation reliability of the clutch mechanism; The swing arm 12 is connected to the lower support rod 707b and the upper support rod 903 respectively through the lower guide groove 12a and the upper guide groove 12b, and synchronously controls the up and down movement of the transmission shaft 7 and the lateral displacement of the upper support ring 9 under the drive of the adjustment part 13. When turning the gear, the connection between the fan shaft 5 and the power generation shaft 16 is disconnected first, and then the transmission shaft 7 is driven to engage; when separating, the turning state is released first, and then the upper support ring 9 is pushed to reset by retaining the spring 904, and the power generation system connection is restored, ensuring that the clutch, lubrication, and transmission switching actions are coordinated in sequence to avoid interference.

[0024] The above is only a specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art can easily think of changes or substitutions within the technical scope disclosed by the present invention, which should be included in the protection scope of the present invention. Therefore, the protection scope of the present invention should be based on the protection scope of the claims.

Claims

1. A barring gear transmission device for a wind turbine, characterized in that: It includes a frame (1) and a mounting frame (2). The mounting frame (2) is fixed inside the frame (1). In the middle of the frame (1), there are a vertically arranged transmission cylinder (3) and a barring cylinder (6). The barring cylinder (6) is located below the transmission cylinder (3). On the mounting frame (2), an upper support (11) for supporting the rotation of the transmission cylinder (3) and a lower support (10) for supporting the rotation of the barring cylinder (6) are fixed. A transmission shaft (7) extending vertically into the transmission cylinder (3) is slidably arranged vertically in the barring cylinder (6). The transmission shaft (7) includes an upper shaft rod (701) extending vertically. At the top of the upper shaft rod (701), a turbine (703) is fixed. On the outer circumference of the turbine (703), movable teeth (704) are arranged. On the inner wall of the transmission cylinder (3), fixed teeth (302) adapted to the movable teeth (704) are arranged. The fixed teeth (302) and the movable teeth (704) are vertically slidably engaged to form a clamping clutch mechanism. Outside the upper shaft rod (701), a piston disk (702) slidably arranged vertically in the barring cylinder (6) is fixed. Below the piston disk (702), a cushion disk (705) is arranged. A lubricating oil cavity communicating with the lower support (10) is formed in the barring cylinder (6) between the cushion disk (705) and the piston disk (702). Outside the lower support (10), a pumping pipe (10a) communicating with the upper support (11) is arranged.

2. The barring gear transmission device of a wind turbine according to claim 1, wherein: The cross-section of the upper shaft rod (701) is a regular polygon. A sliding hole (601) slidably adapted to the upper shaft rod (701) is vertically penetrated at the top of the barring cylinder (6). On the outer circumference of the barring cylinder (6), a lower side hole (602) is arranged. On the cushion disk (705), a limiting rod (705a) extending vertically is fixed. The limiting rod (705a) vertically penetrates the inner edge of the bottom end of the barring cylinder (6), and there is a clearance fit between the limiting rod (705a) and the inner edge of the bottom end of the barring cylinder (6). Outside the limiting rod (705a), a limiting spring (705b) for keeping the cushion disk (705) tightly supported upward is sleeved.

3. The barring gear transmission device of a wind turbine according to claim 2, wherein: On the outer circumference of the transmission cylinder (3), an upper side hole (301) communicating with the upper support (11) is arranged. On the inner wall of the transmission cylinder (3) below the fixed teeth (302), an annular pump impeller (303) is fixed. The pump impeller (303) and the turbine (703) form a hydrodynamic coupling mechanism. At the inner edge of the bottom end of the transmission cylinder (3), an annular sealing groove (304) is arranged. Outside the upper shaft rod (701), a retaining ring (701a) is fixed. Above the retaining ring (701a), a sealing disk (706) is arranged. Above the sealing disk (706), a tightening spring (706a) pressing against the bottom side of the turbine (703) is arranged.

4. The turning gear drive device of a wind turbine according to claim 3, characterized in that: The sealing disk (706) comprises an inner ring and an outer ring which are rotatably matched, the inner ring is fixedly connected to the upper shaft (701), and a sealing ring (706b) which can be sealingly embedded in the sealing groove (304) is fixed on the bottom side of the outer ring, a lower shaft (708) extending vertically is fixed to the bottom end of the upper shaft (701), a transmission sleeve (8) for accommodating the lower shaft (708) to extend therein is rotatably arranged at the bottom of the frame (1), a plurality of vertically extending constraint grooves (708a) are arranged around the outer circumference of the lower shaft (708), a constraint block (801) which vertically slides and adapts to the constraint groove (708a) is fixed inside the transmission sleeve (8), and a reduction motor (14) for driving the transmission sleeve (8) to rotate is fixed at the bottom of the frame (1).

5. The barring gear drive device for a wind turbine according to claim 4, characterized in that: A guide wheel (707) with a grooved wheel structure is fixed to the outside of the bottom end of the upper shaft rod (701); a lower support ring (707a) is rotatably sleeved on the outside of the guide wheel (707); longitudinally extending lower support rods (707b) are fixed to the front and rear sides of the outside of the lower support ring (707a); a vertically extending end shaft (4) is fixed to the top of the transmission cylinder (3); a horizontally extending fan shaft (5) is rotatably arranged on the top of the frame (1); the fan shaft (5) and the end shaft (4) are connected to each other through a bevel gear transmission mechanism.

6. The barring gear drive device for a wind turbine according to claim 5, characterized in that: A power generation shaft (16) is rotatably arranged on a side of the frame (1) away from the fan shaft (5); a generator (15) drivingly connected to the power generation shaft (16) is fixed on the outside of the frame (1); an upper support ring (9) is connected between the power generation shaft (16) and the fan shaft (5); a connecting shaft (501) supporting the upper support ring (9) is fixed on one end of the fan shaft (5) close to the power generation shaft (16); a plurality of active clamping blocks (502) are fixed around the outer end of the connecting shaft (501); and the upper support ring (9) is sleeved on the outside of the connecting shaft (501) and is clearance-matched with the connecting shaft (501).

7. The barring gear drive device for a wind turbine according to claim 6, wherein: The end of the upper support ring (9) is fixed with a plurality of groups of annular teeth (902) extending transversely along the gaps between adjacent active clamping blocks (502), the front and rear sides of the upper support ring (9) are longitudinally fixed with upper support rods (903), the outer side of the connecting shaft (501) is sleeved with a retaining spring (904) pressed against the upper support ring (9), the end of the power generation shaft (16) is fixed with a plurality of groups of driven clamping blocks (16a), the annular teeth (902) extend transversely between adjacent driven clamping blocks (16a), and the annular teeth (902) cooperate with the active clamping block (502) and the driven clamping block (16a) to form a transmission coupling.

8. The barring gear drive device for a wind turbine according to claim 7, wherein: The outer end of the annular tooth (902) is fixed with a plurality of groups of first magnets (905), and the outer end of the driven block (16a) is fixed with a plurality of groups of second magnets (16b), the first magnets (905) and the second magnets (16b) correspond one to one and have the same magnetic properties on opposite surfaces, so as to utilize magnetic assistance to maintain an interlaced corresponding state between the annular tooth (902) and the driven block (16a), and the outer end edge of the driven block (16a) is chamfered.

9. The aero-generator barring drive device according to claim 8, wherein: Inside the mounting bracket (2), there is an L-shaped swing arm (12). In the middle of the mounting bracket (2), there is an adjusting part (13) hinged to support the rotation of the swing arm (12). At the bottom end of the swing arm (12), there is a lower guide groove (12a) longitudinally penetrating and having a clearance fit with a lower strut (707b), and the lower guide groove (12a) extends horizontally. At the top end of the swing arm (12), there is an upper guide groove (12b) longitudinally penetrating and having a clearance fit with an upper strut (903), and the upper guide groove (12b) extends vertically. In the middle of the swing arm (12), there is a traction shaft (12c) fixedly connected to the telescopic end of the adjusting part (13).

10. The method for using the barring gear transmission device of a wind turbine according to claim 9, characterized in that, The steps include: a. When it is necessary to drive the fan shaft (5) to turn the shaft during the process of the fan shaft (5) decelerating to be about to stop, use the adjusting part (13) to pull the swing arm (12) to rotate under the support of the mounting bracket (2). The lower guide groove (12a) at the bottom end of the swing arm (12) pushes the lower strut (707b) downward, thereby pulling the entire drive shaft (7) to move downward. At the same time, the upper guide groove (12b) at the top end of the swing arm (12) pushes the upper strut (903) to move horizontally, and uses the upper support ring (9) to push the holding spring (904) to be compressed, so as to disengage the annular teeth (902) of the synchronizing ring (901) from the driven block (16a) of the power generation shaft (16), so as to disconnect the transmission connection position between the fan shaft (5) and the generator (15); b. During the process of the entire drive shaft (7) moving downward, the upper shaft rod (701) drives the piston disk (702) to squeeze the lubricating oil cavity space, so as to send the lubricating oil along the lower side hole (602), lower support (10), pumping pipe (10a), upper support (11) and upper side hole (301) into the transmission cylinder (3). When the piston disk (702) moves down to the position of the contact cushion disk (705), the pumping of the lubricating oil into the transmission cylinder (3) is completed. At this time, the upper shaft rod (701) drives the turbine (703) and the movable teeth (704) to move down to a critical meshing position with the fixed teeth (302). At the same time, the transmission cylinder (3) is in a continuous rotating state under the meshing drive of the bevel gears of the end shaft (4) and the fan shaft (5), that is, the pump wheel (303) rotates continuously following the transmission cylinder (3). Use the pump wheel (303) to drive the lubricating oil to rotate continuously. Through the cooperation of the pump wheel (303), the lubricating oil and the turbine (703), a hydraulic coupling is formed, so as to start the rotation of the entire drive shaft (7); c. Continue to use the adjusting part (13) to push the swing arm (12) to rotate, and use the lower end of the swing arm (12) to pull the entire drive shaft (7) to move downward, and snap the movable teeth (704) at the top end of the upper shaft rod (701) into the gap position of the fixed teeth (302) on the inner wall of the transmission cylinder (3) to complete the locking transmission of the clamping clutch. Then use the reduction motor (14) to drive the transmission sleeve (8) to rotate, and drive the lower shaft rod (708) to rotate through the transmission sleeve (8), so as to maintain the rotational drive state of the turning shaft cylinder (6) on the transmission cylinder (3) and complete the turning shaft process; d. When it is necessary to stop the barring gear state and couple the fan shaft (5) with the generator shaft (16), the telescopic end of the adjusting part (13) is extended to support the reset rotation of the swing arm (12) and push the transmission shaft (7) upward. Since the limiting spring (705b) below the cushion disc (705) is in a compressed state, during the synchronous upward movement of the cushion disc (705), the piston disc (702), the upper shaft rod (701), and the movable tooth (704), at this time, the cushion disc (705) and the piston disc (702) are still in a tightly abutted state, that is, there is no oil return in the lubricating oil cavity at this time. At the same time, the movable tooth (704) moves upward and disengages from the fixed tooth (302), ensuring that the lubricating oil in the drive cylinder (3) is still in a full state when the engagement clutch in the drive cylinder (3) is separated; e. After the movable tooth (704) moves upward and disengages from the fixed tooth (302), the transmission shaft (7) continues to move upward. At this time, the limiting spring (705b) completely returns to its natural length, that is, the cushion disc (705) cannot continue to move upward with the piston disc (702), and the volume in the lubricating oil cavity continues to expand. The lubricating oil cavity in the negative pressure state is used to cooperate with the upper support (11) and the lower support (10) to convey the lubricating oil downward along the pumping pipe (10a) and back into the lubricating oil cavity to discharge the lubricating oil in the drive cylinder (3). At the same time, the upper retaining ring (9) is pushed toward the generator shaft (16) under the support of the swing arm (12). By using the repulsive force between the magnets on both sides, the annular teeth (902) of the synchronous ring (901) are assisted to engage with the driven catch block (16a), so as to couple the transmission state of the generator shaft (16) and the fan shaft (5) while the transmission state in the drive cylinder (3) is released.

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