Double-output wind power speed increasing box

Abstract

The invention is suitable for the technical field of transmission devices, and provides a double-output wind power speed increasing gearbox which comprises a shell, a speed increasing mechanism is installed in the shell and is a planet wheel set, the output end of the planet wheel set is an adapter shaft, the adapter shaft is connected with a steering mechanism, and the steering mechanism is connected with the shell. Two output shafts of the steering mechanism respectively extend out of the shell, a backlash adjusting mechanism is connected to the output shafts, a lubricating mechanism and a load shedding mechanism are arranged in the shell, the load shedding mechanism is connected with an adapter shaft, when the adapter shaft is overspeed, the load shedding mechanism slows down the speed increasing mechanism, and when the adapter shaft is overspeed, the speed increasing mechanism is connected with the backlash adjusting mechanism. The device solves the problems that a double-output structure is large in assembly difficulty, output is prone to overload, and gear abrasion is aggravated, the backlash of the steering mechanism is adjusted and maintained through the backlash adjusting mechanism, meanwhile, the load reducing mechanism is arranged to limit the speed of the speed increasing mechanism during overspeed, lubrication among all transmission structures is guaranteed in cooperation with the lubricating mechanism, overall abrasion is reduced, and the service life of the device is prolonged. And the service life is prolonged.

Description

Technical Field

[0001] The present invention relates to the technical field of transmission devices, and more specifically, to a dual-output wind power speed increasing box. Background Art

[0002] Wind power speed increaser is mainly used in wind turbines, usually with a planetary gearbox structure to reduce the torque input to the generator and increase the transmission speed. It has the advantages of small size, high load capacity, stable operation and low noise.

[0003] In order to make full use of wind power generation devices, there are single-input dual-output wind power speed increasers on the market. This dual-output wind power speed increaser is usually connected to a worm gear after the planetary gear set, and both ends of the worm driven by the worm gear are output shafts. This double-head output structure realized by the worm gear can withstand a large load and has a high transmission efficiency. However, because the worm is always in contact with the worm gear, it is more susceptible to wear and impact, and generates a large amount of heat, which reduces the overall service life of the double-head output structure.

[0004] There are also double-head outputs that use a bevel gear transmission structure. The bevel gear transmission has the advantages of strong bearing capacity, high transmission efficiency, compact structure, and smooth operation. However, due to the inevitable dimensional errors during manufacturing, the tooth gap between the bevel teeth needs to be adjusted immediately during installation, which increases the difficulty of assembly and easily causes noise and wear.

[0005] In addition, the dual-output structure has a large load. When the input speed is too high, the output end is easily overloaded, causing damage to the gears, bearings and oil film, thereby affecting the overall service life of the speed increaser. Summary of the invention

[0006] In view of the shortcomings of the prior art, an object of the present invention is to provide a more durable dual-output wind power speed increaser.

[0007] To achieve the above object, the present invention provides the following technical solutions:

[0008] A dual-output wind power speed increaser, comprising a housing, a speed increaser mechanism installed in the housing, the speed increaser mechanism being a planetary gear set, the input end of the planetary gear set being an input shaft, the output end of the planetary gear set being an adapter shaft, a steering mechanism being connected to the adapter shaft, two output shafts of the steering mechanism respectively extending out of the housing, the steering mechanism converting power transmitted along the axial direction of the planetary gear set into two power outputs perpendicular to the axial direction of the planetary gear shaft, thereby realizing dual-shaft output;

[0009] The output shaft is connected with a backlash adjustment mechanism, which can adjust the length of the output shaft extending into the housing, thereby adjusting the backlash between the steering mechanisms, so as to ensure the assembly accuracy of the steering mechanism, ensure its transmission accuracy, and reduce wear and noise;

[0010] A lubrication mechanism and a load-reducing mechanism are provided in the outer shell. The lubrication mechanism can maintain lubrication between the transmission components and reduce wear. The load-reducing mechanism is connected to the adapter shaft. When the adapter shaft is overspeeding, the load-reducing mechanism reduces the speed of the speed increasing mechanism, thereby preventing abnormal temperature rise caused by overload of the speed increasing box, avoiding wear caused by oil film loss, and extending the overall service life of the speed increasing box.

[0011] The present invention is further configured as follows: the tooth gap adjustment mechanism includes a mounting sleeve, the mounting sleeve is fixed on the outer shell, and the inner wall of the mounting sleeve pointing to the outer end of the outer shell is provided with a thread 1 and a thread 2, the thread rotation direction of the thread 1 and the thread 2 are opposite, the thread 2 is arranged on the inner side of the thread 1, the thread 2 is threadedly connected with an adjustment ring, the thread 1 is threadedly connected with a locking ring, the locking ring abuts against the adjustment ring, the adjustment ring is connected to the output shaft, and the output shaft can be synchronously pushed when the adjustment ring is rotated, thereby changing the length of the output shaft extending into the outer shell, that is, realizing the adjustment of the steering mechanism tooth gap, after checking and confirming that the tooth gap is appropriate, tightening the locking ring can fix the position of the output shaft, and the double thread structure with opposite rotation directions has a certain anti-loosening function, so that the position of the output shaft can be maintained during the operation of the speed increaser, thereby ensuring the stability of the transmission.

[0012] The present invention is further configured as follows: a bearing 1 is fixedly mounted on one end of the output shaft away from the housing, a bearing 2 is mounted on the other end of the output shaft, a connecting sleeve is sleeved on the output shaft, two ends of the connecting sleeve are respectively abutted against the inner ring of the bearing 1 and the inner ring of the bearing 2, the bearing 1 and the bearing 2 are both mounted in the mounting sleeve, the adjusting ring is abutted against the outer ring of the bearing 1, and when the adjusting ring is rotated, the adjusting ring drives the bearing 2 to move synchronously in the mounting sleeve through the bearing 1 and the connecting sleeve, thereby adjusting the position between the output shaft and the mounting sleeve, that is, adjusting the length of the output shaft extending into the housing, thereby realizing tooth clearance adjustment.

[0013] It is further configured as follows: a sealing ring is installed at one end of the output shaft in the housing, the sealing ring is a mechanical seal, the inner lining of the dynamic ring of the sealing ring is in contact with the two bearings, the static ring of the sealing ring is installed on the mounting sleeve, and the dynamic ring of the mechanical seal has a certain displacement margin under the action of the spring, so that when the output shaft position is adjusted, this part of the displacement can be compensated to maintain the sealing performance.

[0014] The present invention is further configured as follows: the load-reducing mechanism includes a cover plate, which is installed on the outer shell, and the cover plate is coaxially arranged with the adapter shaft. A cylindrical cavity is opened at one end of the cover plate in the outer shell, and the adapter shaft is rotatably connected to the cover plate and extends into the cavity. A friction surface is arranged in the cavity, and a tightening spring is installed at one end of the adapter shaft in the cavity. A friction plate is connected to the free end of the tightening spring. The pre-tightening force of the tightening spring can ensure that the friction plate does not contact the friction surface under normal conditions. When overspeeding, the friction plate is thrown out and adheres to the friction surface. The friction force prevents the overall speed of the speed-increasing mechanism from continuing to rise, thereby preventing the speed-increasing box from overloading, maintaining the temperature rise of the transmission components at a certain level, and preventing aggravated wear.

[0015] In one embodiment, the friction surface is arranged along the circumferential inner wall of the cavity, a mounting plate is arranged at the end of the adapter shaft, and a plurality of the tightening springs are radially symmetrically installed in the mounting plate, and the side of the friction plate away from the corresponding tightening spring forms an arc shape with the same diameter as the cavity.

[0016] In another embodiment, the friction surface is arranged on the bottom surface of the cavity perpendicular to the adapter shaft, the tightening spring is axially installed in the adapter shaft, the friction plate includes a connecting column, one end of the connecting column is slidably connected to the adapter shaft, and the other end of the connecting column is provided with a friction disk, and the friction disk can contact the friction surface, a plurality of passive teeth are evenly arranged along the circumference of the connecting column, and a plurality of active teeth are correspondingly arranged at the end of the adapter shaft, and the direction of the inclined surface of the active teeth is opposite to the preset rotation direction of the adapter shaft.

[0017] The present invention is further configured as follows: the housing includes a right end cover and a left end cover, an oil pool is provided at the bottom of the left end cover, the bottom of the oil pool is lower than the bottom of the right end cover, a through-flow groove is connected between the right end cover and the oil pool, the lubrication mechanism includes a liquid outlet pipe and a liquid inlet pipe, the liquid outlet pipe is provided at the bottom of the oil pool, the liquid inlet pipe is connected to the top of the housing, and a magnet is laid at the bottom of the oil pool;

[0018] The lubrication mechanism is connected to the external oil storage and pumping device through the liquid outlet pipe and the liquid inlet pipe, which can cool the oil in the oil pool, thereby ensuring the lubricating performance of the lubricating oil and having a certain heat dissipation effect on the transmission components;

[0019] Impurities in the lubricating oil are usually iron filings formed by friction between the tooth surfaces. The magnets laid at the bottom of the oil pool can absorb the iron filings in the lubricating oil, preventing them from re-entering the tooth surfaces and causing wear on the gears.

[0020] A buffer net is provided on the top of the oil pool, the bottom of the flow groove is not lower than the mesh surface of the buffer net, and a filter cartridge is provided at the opening of the liquid outlet pipe on the oil pool. The filter cartridge is made of non-metallic material and extends into the oil pool to filter impurities in the oil.

[0021] It is further configured that: the steering mechanism includes a driving bevel gear, the driving bevel gear is mounted on the adapter shaft, two driven bevel gears are symmetrically meshed on the driving bevel gear, and the two output shafts are respectively connected to the two driven bevel gears.

[0022] The advantages of the present invention are:

[0023] 1. A backlash adjustment mechanism is installed on the output shaft of the steering mechanism. The adjustment and locking are achieved through a double-thread structure with opposite rotation directions. When the adjustment ring is turned, the output shaft is pushed by pushing the bearing 1 and the bearing 2 fixed on the output shaft, thereby adjusting the length of the output shaft extending into the housing. When the output shaft is rotated to check the backlash, the output shaft is not easy to move, ensuring the accuracy of the backlash adjustment. After the adjustment is in place, the locking ring is rotated to squeeze it with the adjustment ring, thereby fixing the position of the output shaft to prevent it from loosening, which can maintain the smooth operation of the steering mechanism and reduce wear;

[0024] 2. A sealing ring is installed on the inner side of the connection between the output shaft and the housing. The sealing ring adopts mechanical seal, and its dynamic ring has a certain displacement compensation, which can ensure that the output shaft and the housing are always in a sealed state when adjusting the tooth gap, prevent the leakage of lubricating oil, and ensure the lubrication performance;

[0025] 3. Magnets are laid at the bottom of the oil pool to absorb iron filings in the lubricating oil, and a filter cartridge is covered at the outlet of the oil pool to prevent iron filings and other impurities from re-entering the tooth surface during circulation and damaging the tooth surface.

[0026] 4. A load-reducing mechanism is provided on the adapter shaft, which includes a friction plate and a friction surface fixed on the outer shell. The friction plate is connected to the adapter shaft through a tightening spring. The preload of the tightening spring can ensure that the friction plate does not contact the friction surface during normal operation. When the adapter shaft overspeeds, the friction plate is thrown out to fit on the friction surface, and a reverse torque is applied to the adapter shaft through friction force to limit the further increase in its speed, thereby preventing abnormal temperature rise of the transmission components, avoiding damage to the oil film, and reducing tooth surface wear. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 This is a schematic diagram of the structure of Embodiment 1 of the present invention;

[0028] Figure 2 For along Figure 1 The AA line section is shown;

[0029] Figure 3 For along Figure 1 The BB line cross section is shown;

[0030] Figure 4 For along Figure 1The CC line cross-section is shown;

[0031] Figure 5 for Figure 3 An enlarged view of part D is shown;

[0032] Figure 6 for Figure 3 An enlarged view of part E is shown;

[0033] Figure 7 This is a structural schematic diagram of Embodiment 2 of the present invention;

[0034] Figure 8 for Figure 7 An enlarged view of part F is shown;

[0035] Fig. 9 It is a structural schematic diagram of the load reduction device of the second embodiment;

[0036] In the figure: 1, housing; 11, right end cover; 12, left end cover; 13, oil pool; 14, flow groove; 2, speed increasing mechanism; 21, input shaft; 22, adapter shaft; 221, driving teeth; 23, planetary gear set; 3, steering mechanism; 31, driving bevel gear; 32, driven bevel gear; 33, output shaft; 4, sealing ring; 41, dynamic ring; 42, static ring; 5, backlash adjustment mechanism; 51, mounting sleeve; 51 1. Thread one; 512. Thread two; 52. Bearing one; 53. Bearing two; 54. Connecting sleeve; 55. Adjusting ring; 56. Locking ring; 6. Load-reducing mechanism; 61. Cover plate; 611. Friction surface; 62. Mounting plate; 63. Friction plate; 631. Passive teeth; 64. Tightening spring; 7. Lubricating mechanism; 71. Buffer net; 72. Liquid outlet pipe; 73. Filter cartridge; 74. Magnet; 75. Liquid inlet pipe. DETAILED DESCRIPTION

[0037] It should be noted that, in the absence of conflict, the embodiments and features in the embodiments of the present application may be combined with each other. The present invention will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0038] See also Figure 1-9 , the present invention provides the following technical solutions:

[0039] A dual-output wind power speed increaser, comprising a housing 1, a speed increaser 2 installed in the housing 1, the speed increaser 2 being a planetary gear set 23, the input end of the planetary gear set 23 being an input shaft 21, the output end of the planetary gear set 23 being a transfer shaft 22, the transfer shaft 22 being connected with a steering mechanism 3, in this embodiment the steering mechanism 3 is a bevel gear transmission mechanism, comprising a driving bevel gear 31, the driving bevel gear 31 being installed on the transfer shaft 22, the driving bevel gear 31 being symmetrically meshed with two driven bevel gears 32, the two driven bevel gears 32 being each installed with an output shaft 33, the two output shafts 33 respectively extending out of the housing 1 to both sides, being the output ends of the entire speed increaser, thereby realizing dual output;

[0040] The output shaft 33 is connected with a backlash adjustment mechanism 5, which can adjust and maintain the length of the output shaft 33 extending into the housing 1, thereby adjusting the backlash between the driven bevel gear 32 and the driving bevel gear 31 to ensure the assembly accuracy and reduce the wear and noise of the tooth surface;

[0041] A lubrication mechanism 7 and a load-reducing mechanism 6 are provided in the housing 1. The lubrication mechanism 7 can maintain lubrication between the transmission components to reduce wear. The load-reducing mechanism 6 is connected to the adapter shaft 22. When the adapter shaft 22 overspeeds, the load-reducing mechanism 6 decelerates the speed increasing mechanism 2, thereby preventing the speed increasing box from being overloaded and causing excessive temperature rise, thereby preventing oil film loss, ensuring lubrication performance, reducing wear, and extending the overall service life of the speed increasing box.

[0042] The tooth clearance adjustment mechanism 5 includes a mounting sleeve 51, which is fixed on the housing 1. A thread 1 511 and a thread 2 512 are arranged on the inner wall of the mounting sleeve 51 pointing to the outer side of the housing 1. The thread 1 511 and the thread 2 512 have opposite thread rotation directions. The thread 2 512 is arranged on the inner side of the thread 1 511. An adjusting ring 55 is threadedly connected to the thread 2 512. A locking ring 56 is threadedly connected to the thread 1 511. The adjusting ring 55 has a certain positioning ability through the threaded connection. When the tooth clearance is checked after adjustment, it can not move, thereby ensuring the accuracy of the tooth clearance adjustment process. After the tooth clearance is adjusted into place by the adjusting ring 55, the locking ring 56 is tightened so that the locking ring 56 abuts against the adjusting ring 55. At this time, the double thread structure with opposite rotation directions has the function of loosening, ensuring that the locking ring 56 and the adjusting ring 55 can maintain the relative position with the mounting sleeve 51 during the operation of the speed increaser, thereby ensuring that the output shaft 33 does not move axially and the stability of the tooth clearance is maintained.

[0043] A bearing 1 52 is fixedly installed at one end of the output shaft 33 facing away from the housing 1, and a bearing 2 53 is fixedly installed at the other end of the output shaft 33. A connecting sleeve 54 is sleeved on the output shaft 33, and the two ends of the connecting sleeve 54 are respectively abutted against the bearing 1 52 and the bearing 2 53. The bearing 1 52 and the bearing 2 53 are both installed in the mounting sleeve 51. The stability of the axial position of the output shaft 33 is ensured by the double bearing structure to ensure the stability of the transmission. The adjusting ring 55 is fixedly connected to the outer ring of the bearing 1 52. When the adjusting ring 55 is rotated, the bearing 1 52 can be driven to move synchronously in the axial direction through the outer ring of the bearing 1 52, thereby driving the output shaft 33 to move in the axial direction through the inner ring of the bearing 1 52 and the inner ring of the bearing 2 53 to adjust the tooth clearance of the steering mechanism 3.

[0044] A sealing ring 4 is installed at one end of the output shaft 33 in the housing 1. The sealing ring 4 is a mechanical seal. The inner lining of the dynamic ring 41 of the sealing ring 4 abuts against the bearing 2 53. The static ring 42 of the sealing ring 4 is installed on the mounting sleeve 51. The dynamic ring 41 of the mechanical seal has a certain axial displacement margin through the spring, so that when the axial position of the output shaft 33 is adjusted, the dynamic ring 41 can always maintain the contact between the static ring 42, thereby ensuring the sealing of the connection between the output shaft 33 and the housing 1 to prevent leakage of lubricating oil.

[0045] The load-reducing mechanism 6 includes a cover plate 61, which is mounted on the housing 1. The cover plate 61 is coaxially arranged with the adapter shaft 22. A cylindrical cavity is opened at one end of the cover plate 61 in the housing 1. The adapter shaft 22 is rotatably connected to the cover plate 61 and extends into the cavity. A friction surface 611 is arranged in the cavity. The oil splashed during the operation of the transmission component hardly enters the cavity, thereby avoiding the friction force of the lubricating oil destroying the friction surface 611. A tightening spring 64 is installed at one end of the adapter shaft 22 in the cavity. The free end of the tightening spring 64 is A friction plate 63 is connected. During normal operation, the pre-tightening force of the tightening spring 64 prevents the friction plate 63 from contacting the friction surface 611. When the adapter shaft 22 is overspeeding, the centrifugal force of the friction plate 63 overcomes the pulling force of the tightening spring 64, and the friction plate 63 is thrown out to contact the friction surface 611, thereby braking through the generated friction force to prevent the speed of the adapter shaft 22 from continuing to increase, thereby achieving load reduction, preventing abnormal temperature rise caused by overspeeding, avoiding oil film loss, reducing tooth surface wear, and extending the service life of the transmission components;

[0046] The speed increaser has the function of increasing speed and reducing torque, that is, the rotation speed on the adapter shaft 22 is relatively large, while its torque has been reduced. The unloading mechanism 6 is arranged on the adapter shaft 22, which reduces the force required for load reduction and facilitates the realization of the speed limiting function. Moreover, it is only necessary to limit the speed of the adapter shaft 22 to avoid overloading of the two output shafts 33 at the same time, thereby simplifying the structure.

[0047] In one embodiment, the friction surface 611 is arranged along the circumferential inner wall of the cavity, and a mounting disk 62 is arranged at the end of the adapter shaft 22. A plurality of tightening springs 64 are radially symmetrically installed in the mounting disk 62. The friction plate 63 deviates from the side of the corresponding tightening spring 64 to form an arc shape with the same diameter as the cavity. The friction plate 63 maintains balance under the action of centrifugal force and the tension of the tightening spring 64. During normal operation, the friction plate 63 is tightened in the mounting disk 62, or is thrown out a small distance and does not contact the friction surface 611. When the adapter shaft 22 overspeeds, the centrifugal force on the friction plate 63 increases, so that the friction plate 63 continues to move outward until it fits with the friction surface 611. The friction force between the friction surface 611 and the friction plate 63 is opposite to the direction of rotation of the adapter shaft 22, thereby braking the adapter shaft 22 to prevent the speed of the adapter shaft 22 from continuing to increase and causing abnormal temperature rise, thereby achieving load reduction and reducing tooth surface wear.

[0048] In another embodiment, the friction surface 611 is arranged on the bottom surface of the cavity perpendicular to the adapter shaft 22, the tightening spring 64 is axially installed in the adapter shaft 22, the friction plate 63 includes a connecting column, one end of the connecting column is slidably connected to the adapter shaft 22, and the other end of the connecting column is provided with a friction disk, and the friction disk can contact the friction surface 611, and a plurality of passive teeth 631 are evenly arranged along the circumference of the connecting column, and a plurality of active teeth 221 are correspondingly arranged at the end of the adapter shaft 22, and the direction of the inclined surface of the active teeth 221 is opposite to the preset rotation direction of the adapter shaft 22, and the passive teeth 631 are pressed under the pulling force of the tightening spring 64. The active tooth 221 is tightened, so that during normal operation, the adapter shaft 22 can push the friction plate 63 to rotate synchronously through the inclined surface of the active tooth 221. At this time, the friction plate 63 is not in contact with the friction surface 611. When the adapter shaft 22 is overspeed, the torque thereon also increases accordingly, and the force of the active tooth 221 on the passive tooth 631 increases. The friction plate 63 is pushed out axially until it contacts the friction surface 611. After receiving the friction force of the friction surface 611, the friction plate 63 reacts with the active tooth 211 through the vertical surface of the passive tooth 631, thereby counteracting the adapter shaft 22 to prevent the speed of the adapter shaft 22 from continuing to increase.

[0049] The housing 1 includes a right end cover 11 and a left end cover 12. An oil pool 13 is provided at the bottom of the left end cover 12. The bottom of the oil pool 13 is lower than the bottom of the right end cover 11. A through-flow groove 14 is connected between the right end cover 11 and the oil pool 13. The lubricating mechanism 7 includes a liquid outlet pipe 72 and a liquid inlet pipe 75. The liquid outlet pipe 72 is provided at the bottom of the oil pool 13. The liquid inlet pipe 75 is connected to the top of the housing 1. The liquid inlet pipe 75 and the liquid outlet pipe 72 are both connected to the external lubricating oil storage and pumping device, so as to realize the circulation of the lubricating oil, cool the oil, and maintain its lubricating performance. At the same time, it has a certain heat dissipation effect on the various transmission components inside the speed increaser.

[0050] Each transmission component is lubricated by oil throwing through the oil pool 13. A plurality of liquid inlet pipes 75 can also be provided on the top of the housing 1. When the liquid is inlet, the lubricating oil can be sprayed on each component to improve the lubrication effect.

[0051] After the lubricating oil enters the housing 1 through the liquid inlet pipe 75, it finally enters the oil pool 13 for sedimentation. The bottom of the oil pool 13 is paved with magnets 74, which can absorb iron filings in the lubricating oil, thereby preventing the iron filings from re-entering the tooth surfaces with the circulation and preventing the iron filings from damaging the tooth surfaces.

[0052] A buffer net 71 is provided on the upper cover of the oil pool 13, and the bottom of the through-flow groove 14 is not lower than the net surface of the buffer net 71, so as to reduce the impact of the oil in the housing 1 on the oil below the buffer net 71 when it is splashed by the transmission components, and prevent the iron filings adsorbed on the magnet 74 from being washed away;

[0053] The opening of the liquid outlet pipe 72 on the oil pool 13 is covered with a filter cartridge 73, which is made of non-metallic material and will not absorb iron filings under the action of the magnet 74. The filter cartridge 73 extends into the oil pool 13 to avoid impurities blocking the filter cartridge 73 and ensure the circulation efficiency of the lubricating oil.

[0054] The working principle of the present invention is as follows:

[0055] A backlash adjustment mechanism 5 is installed on the output shaft 33 of the steering mechanism 3. The adjustment and locking are realized by a double-thread structure with opposite rotation directions. When the adjustment ring 55 is rotated, the output shaft 33 is pushed by pushing the bearing 1 52 and the bearing 2 53 fixedly installed on the output shaft 33, thereby adjusting the length of the output shaft 33 extending into the housing 1. When the output shaft 33 is rotated to check the backlash, the output shaft 33 is not easy to move, thereby ensuring the accuracy of the backlash adjustment. After the adjustment is in place, the locking ring 56 is rotated to squeeze it with the adjustment ring 55, thereby fixing the position of the output shaft 33 to prevent it from loosening, which can maintain the smooth operation of the steering mechanism 3 and reduce wear.

[0056] A sealing ring 4 is installed on the inner side where the output shaft 33 is connected to the housing 1. The sealing ring 4 adopts a mechanical seal, and its dynamic ring 41 has a certain displacement compensation, which can ensure that the output shaft 33 and the housing 1 are always in a sealed state when adjusting the tooth gap, prevent the leakage of lubricating oil, and ensure the lubrication performance;

[0057] The bottom of the oil pool 13 is provided with a magnet 74, which can absorb iron filings in the lubricating oil, and the outlet pipe 72 is covered with a filter cartridge 73 at the pipe opening of the oil pool 13, which can prevent impurities such as iron filings from re-entering the tooth surface during circulation and prevent the tooth surface from being damaged;

[0058] A load-reducing mechanism 6 is provided on the adapter shaft 22, and the load-reducing mechanism 6 includes a friction plate 63 and a friction surface 611 fixed on the outer shell 1. The friction plate 63 is connected to the adapter shaft 22 through a tightening spring 64. The pre-tightening force of the tightening spring 64 can ensure that the friction plate 63 does not contact the friction surface 611 during normal operation. When the adapter shaft 22 overspeeds, the friction plate 63 is thrown out to fit on the friction surface 611, and a reverse torque is applied to the adapter shaft 22 through friction force, limiting the further increase in its rotation speed, thereby preventing abnormal temperature rise of the transmission components through speed limiting, avoiding damage to the oil film, and reducing tooth surface wear.

[0059] Obviously, the above-described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work should fall within the scope of protection of the present invention.

[0060] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit the exemplary embodiments according to the present application. As used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "comprise" and / or "include" are used in this specification, it indicates the presence of features, steps, operations, devices, components and / or combinations thereof.

Claims

1. A dual-output wind power speed increasing gearbox, comprising a housing (1), wherein a speed increasing mechanism (2) is installed in the housing (1), characterized in that: The speed increasing mechanism (2) is a planetary gear set (23), the input end of the planetary gear set (23) is an input shaft (21), the output end of the planetary gear set (23) is an adapter shaft (22), the adapter shaft (22) is connected to a steering mechanism (3), two output shafts (33) of the steering mechanism (3) respectively extend out of the housing (1), the output shafts (33) are connected to a backlash adjustment mechanism (5), a lubrication mechanism (7) and a load reduction mechanism (6) are arranged in the housing (1), the load reduction mechanism (6) is connected to the adapter shaft (22), and when the adapter shaft (22) is overspeeding, the load reduction mechanism (6) decelerates the speed increasing mechanism (2).

2. A dual-output wind power speed increaser according to claim 1, characterized in that: The backlash adjustment mechanism (5) comprises a mounting sleeve (51), the mounting sleeve (51) being fixed on the housing (1), a first thread (511) and a second thread (512) being provided on the inner wall of an end of the mounting sleeve (51) pointing to the outside of the housing (1), the first thread (511) and the second thread (512) having opposite thread rotation directions, the second thread (512) being provided on the inner side of the first thread (511), an adjustment ring (55) being threadedly connected to the second thread (512), a locking ring (56) being threadedly connected to the first thread (511), the locking ring (56) being in contact with the adjustment ring (55), and the adjustment ring (55) being connected to the output shaft (33).

3. A dual-output wind power speed increaser according to claim 2, characterized in that: A first bearing (52) is fixedly mounted on one end of the output shaft (33) away from the housing (1), and a second bearing (53) is mounted on the other end of the output shaft (33). A connecting sleeve (54) is sleeved on the output shaft (33), and two ends of the connecting sleeve (54) are respectively in contact with the first bearing (52) and the second bearing (53). The first bearing (52) and the second bearing (53) are both mounted in the mounting sleeve (51), and the adjusting ring (55) is in contact with the outer ring of the first bearing (52).

4. A dual-output wind power speed increaser according to claim 3, characterized in that: A sealing ring (4) is installed at one end of the output shaft (33) in the housing (1); the sealing ring (4) is a mechanical seal; the inner lining of the dynamic ring (41) of the sealing ring (4) abuts against the second bearing (53); and the static ring (42) of the sealing ring (4) is installed on the mounting sleeve (51).

5. The dual-output wind power speed increaser according to claim 1, characterized in that: The load-reducing mechanism (6) comprises a cover plate (61), the cover plate (61) being mounted on the housing (1), the cover plate (61) being coaxially arranged with the adapter shaft (22), a cylindrical cavity being formed at one end of the cover plate (61) in the housing (1), the adapter shaft (22) being rotatably connected to the cover plate (61) and extending into the cavity, a friction surface (611) being arranged in the cavity, a tightening spring (64) being mounted at one end of the adapter shaft (22) in the cavity, a friction plate (63) being connected to the free end of the tightening spring (64), and the friction plate (63) being thrown out and pressed against the friction surface (611) when overspeeding.

6. A dual-output wind power speed increaser according to claim 5, characterized in that: The friction surface (611) is arranged along the circumferential inner wall of the cavity, a mounting plate (62) is arranged at the end of the adapter shaft (22), a plurality of the tightening springs (64) are symmetrically mounted in the mounting plate (62) along the radial direction, and the side surface of the friction plate (63) facing away from the corresponding tightening spring (64) forms an arc shape with the same diameter as the cavity.

7. A dual-output wind power speed increaser according to claim 5, characterized in that: The friction surface (611) is arranged on a bottom surface of the cavity perpendicular to the adapter shaft (22); the tightening spring (64) is axially mounted in the adapter shaft (22); the friction plate (63) comprises a connecting column, one end of which is slidably connected to the adapter shaft (22); the other end of the connecting column is provided with a friction disk, and the friction disk can contact the friction surface (611); a plurality of passive teeth (631) are evenly arranged on the connecting column along the circumference; a plurality of active teeth (221) are correspondingly arranged at the end of the adapter shaft (22); and the direction of the inclined surface of the active teeth (221) is opposite to the preset rotation direction of the adapter shaft (22).

8. The dual-output wind power speed increaser according to claim 1, characterized in that: The housing (1) comprises a right end cover (11) and a left end cover (12); an oil pool (13) is arranged at the bottom of the left end cover (12); the bottom of the oil pool (13) is lower than the bottom of the right end cover (11); a flow groove (14) is connected between the right end cover (11) and the oil pool (13); the lubricating mechanism (7) comprises a liquid outlet pipe (72) and a liquid inlet pipe (75); the liquid outlet pipe (72) is arranged at the bottom of the oil pool (13); the liquid inlet pipe (75) is connected to the top of the housing (1); and a magnet (74) is laid at the bottom of the oil pool (13).

9. A dual-output wind power speed increaser according to claim 8, characterized in that: A buffer net (71) is provided on the upper cover of the oil pool (13); the bottom of the through-flow groove (14) is not lower than the mesh surface of the buffer net (71); a filter cartridge (73) is provided on the opening of the liquid outlet pipe (72) on the oil pool (13); the filter cartridge (73) is made of non-metallic material and extends into the oil pool (13).

10. The dual-output wind power speed increaser according to claim 1, characterized in that: The steering mechanism (3) comprises a driving bevel gear (31), the driving bevel gear (31) being mounted on a transfer shaft (22), two driven bevel gears (32) being symmetrically meshed on the driving bevel gear (31), and the two output shafts (33) being respectively connected to the two driven bevel gears (32).

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