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CN-122014834-A - Conical surface thrust structure for replacing high-speed thrust bearing of high-speed gear box

CN122014834ACN 122014834 ACN122014834 ACN 122014834ACN-122014834-A

Abstract

The present invention discloses a conical thrust structure for replacing high-speed thrust bearings in high-speed gearboxes, which relates to the field of gear bearing structures and solves the problem of the existing high-speed gearbox thrust bearings being subjected to excessive thrust and speed differences during use, which can easily cause damage and affect equipment use. The structure includes a lower housing, an upper housing, a driving gear, a thrust mechanism, and a lubrication mechanism. The thrust mechanism includes a large gear, a first conical ring, and a second conical ring, and the lubrication mechanism includes a nozzle. The present invention uses the first conical ring and the second conical ring to resist the outer edges of the driving gear and the large gear, dispersing the axial thrust of the driving gear. At the same time, the high-speed rotation of the driving gear is used to drive the large gear to decelerate and rotate. When the large gear rotates, Through the linkage of the lubrication mechanism, the lubricating oil at the bottom of the lower shell is pumped into the upper part and output from the nozzle position to the connection between the large gear and the driving gear, improving the lubrication performance of the tooth surface and cone surface position, and reducing the friction force during the rotation resistance process.

Inventors

  • XIONG ZIQIANG
  • CHEN ZHIWEI
  • LIU YILI
  • SHENG GUO
  • YANG LIN

Assignees

  • 湖北三峰透平装备股份有限公司

Dates

Publication Date
20260512
Application Date
20260226

Claims (10)

  1. 1. A conical surface thrust structure for a high-speed gearbox to replace a high-speed thrust bearing, comprising: the device comprises a lower shell (1) and a driving gear (2), wherein the upper side of the lower shell (1) is fixedly connected with an upper shell (3) through a bolt; Further comprises: The thrust mechanism comprises two groups of large gears (4) meshed with the driving gear (2), a first conical surface ring (5) and a second conical surface ring (6) are arranged in the lower shell (1), the outer edges of the two sides of the driving gear (2) and the large gears (4) are designed to be conical surfaces, the thrust mechanism can conflict with the outer edges of the driving gear (2) and the large gears (4) through the first conical surface ring (5) and the second conical surface ring (6), and meanwhile, the large gears (4) are driven to rotate in a decelerating mode by utilizing high-speed rotation of the driving gear (2), and the purpose of axially pushing the driving gear (2) is achieved by limiting axial movement of the large gears (4); The lubricating mechanism comprises two groups of spray heads (7) arranged on the upper shell (3), the output ends of the spray heads (7) face to two sides of the joint of the large gear (4) and the driving gear (2), the lubricating mechanism can be used for sucking lubricating oil at the bottom of the lower shell (1) to the upper side and outputting the lubricating oil from the position of the spray heads (7) to the joint of the large gear (4) and the driving gear (2) in a linkage mode when the large gear (4) rotates, and an oil film is generated at a gap position.
  2. 2. The conical surface thrust structure for replacing a high-speed thrust bearing by a high-speed gearbox is characterized by further comprising two groups of side plates (8) which can be clamped with the inner walls of the lower shell (1) and the upper shell (3), wherein the two groups of side plates (8) are respectively positioned at two sides of the driving gear (2), the first conical surface ring (5) is provided with two conical surface positions which are respectively attached to the outer edges of the two sides of the driving gear (2) in a sliding manner, the second conical surface ring (6) is provided with four conical surface rings which are respectively attached to the outer edges of the two sides of the large gear (4) in a sliding manner, the first conical surface ring (5) and the second conical surface ring (6) are rotationally connected with the side plates (8), and the side surfaces of the side plates (8) are provided with connecting pieces for connecting and limiting the driving gear (2) and the large gear (4).
  3. 3. The conical surface thrust structure for replacing a high-speed thrust bearing of a high-speed gearbox according to claim 2, wherein the connecting piece comprises a driving shaft (9) which is coaxially and fixedly arranged on the driving gear (2), a rotating shaft (10) is coaxially and fixedly connected to the large gear (4), the driving shaft (9) penetrates through the side plate (8) and is not contacted with the inner wall of the side plate (8), two groups of inner sleeve roller assemblies (11) are respectively and fixedly connected to the driving shaft (9) and the rotating shaft (10), an outer sleeve ring (12) is sleeved on the outer side of the inner sleeve roller assemblies (11), two groups of clamping blocks (13) are fixedly connected to the outer wall of the outer sleeve ring (12), and a clamping piece for limiting the clamping blocks (13) is arranged in the lower shell (1).
  4. 4. The conical surface thrust structure for replacing a high-speed thrust bearing of a high-speed gearbox according to claim 3, wherein the clamping piece comprises an upper clamping plate (14) and a lower clamping plate (15) which can be mutually clamped, the upper clamping plate (14) and the lower clamping plate (15) are fixedly connected through bolts, clamping grooves (16) which can be respectively clamped with the outer ring (12) and the clamping block (13) are respectively formed in the upper clamping plate (14) and the lower clamping plate (15), and the upper clamping plate (14) and the lower clamping plate (15) can be clamped with the inner walls of the upper shell (3) and the lower shell (1).
  5. 5. The conical surface thrust structure for replacing a high-speed thrust bearing of a high-speed gearbox according to claim 4, wherein the side plates (8) are provided with plug holes (17), plug tubes (18) are inserted into the plug holes (17), roller plates (19) are fixedly connected to the outer walls of the plug tubes (18), a plurality of groups of cylindrical rollers (20) are rotatably connected to the roller plates (19), guide rings (21) are fixedly connected to the two sides of the large gear (4) respectively, the cylindrical rollers (20) are in rolling connection with the side surfaces of the guide rings (21), and the rotating shafts (10) penetrate through the plug tubes (18) and are not in contact with the inner walls of the plug tubes (18).
  6. 6. The conical surface thrust structure for replacing a high-speed thrust bearing by a high-speed gearbox is characterized in that the lubrication mechanism further comprises an oil storage box (22) fixedly installed inside the upper shell (3), an output pipe (23) is connected to the side surface of the oil storage box (22) in a communicating mode, a connecting box (24) is connected to one end of the output pipe (23) in a communicating mode, two groups of connecting pipes (25) are connected to the bottom of the connecting box (24) in a communicating mode, the two groups of connecting pipes (25) are respectively communicated with the two groups of spray heads (7), two groups of first butt joint pipes (26) are connected to the bottom of the connecting box (24) in a communicating mode, conveying pieces for conveying lubricating oil are arranged in the side plates (8), and pumping pieces for pumping the lubricating oil are arranged in the upper shell (3).
  7. 7. The conical surface thrust structure for replacing a high-speed thrust bearing of a high-speed gearbox according to claim 6, wherein the conveying member comprises a plurality of groups of rotating rings (27) rotatably connected with the inner wall of the side plate (8), the first conical surface ring (5) is coaxially attached to one group of the rotating rings (27) for rotation, a first pipeline (28) is arranged in the side plate (8), the first butt joint pipe (26) can be inserted into the upper end of the first pipeline (28), and the bottom end of the first pipeline (28) is attached to the outer walls of the plurality of groups of the rotating rings (27).
  8. 8. The conical surface thrust structure for replacing a high-speed thrust bearing by a high-speed gearbox is characterized in that the pumping part comprises a rotating rod (29) rotationally connected with the upper shell (3), a transmission gear (30) is fixedly connected to the outer wall of the rotating rod (29) coaxially, the transmission gear (30) can be meshed with one side of the large gear (4), two sides of the transmission gear (30) are respectively and coaxially rotationally connected with a volute (31), the volute (31) is fixedly connected with the upper shell (3), the rotating rod (29) penetrates through the volute (31) and is rotationally connected with the inner wall of the volute (31), an impeller (32) is rotationally connected to the inner wall of the volute (31), and the impeller (32) is fixedly connected with the rotating rod (29) coaxially.
  9. 9. The conical surface thrust structure for replacing a high-speed thrust bearing by a high-speed gearbox is characterized in that the pumping part further comprises a second butt joint pipe (33) communicated and connected with the middle of the volute (31), a conveying pipe (34) communicated and connected with the oil storage box (22) is connected to the outer wall of the volute (31), the conveying pipe (34) is located at the upper side of the output pipe (23), a filtering part (35) is fixedly connected in the oil storage box (22), the filtering part (35) is located at the middle position of the conveying pipe (34) and the output pipe (23), a triangular groove (36) is formed in the bottom of the inner wall of the lower shell (1), a triangular plate (37) capable of being inserted and connected with the triangular groove (36) is fixedly connected to the bottom of the side plate (8), a second pipeline (38) is formed in the triangular plate (37) and the side surface of the side plate (8), and the bottom end of the second pipeline (38) is communicated with the top end of the triangular groove (36), and the second butt joint pipe (33) can be inserted and connected with the top end of the triangular groove (36).
  10. 10. The conical surface thrust structure for replacing a high-speed thrust bearing of a high-speed gearbox according to claim 6, wherein a top cover (39) is arranged on the upper side of the oil storage box (22), an exhaust valve (40) capable of controlling gas to be exhausted from the oil storage box (22) to the outside in a unidirectional manner is arranged on the top cover (39), a sleeve ring (41) is sleeved between the upper shell (3) and the lower shell (1), and the sleeve ring (41) is fixedly connected with the upper shell (3) and the lower shell (1) through bolts.

Description

Conical surface thrust structure for replacing high-speed thrust bearing of high-speed gear box Technical Field The invention relates to the technical field of gear bearing structures, in particular to a conical surface thrust structure for a high-speed gearbox to replace a high-speed thrust bearing. Background In the fields of wind power, rail transit, high-end equipment manufacturing and the like, a high-speed gear box is used as a core transmission component, and the operation reliability and the bearing performance of the high-speed gear box directly determine the working efficiency and the service life of the whole machine. Along with the continuous rising of the requirements of downstream industries on equipment power density and rotating speed grades, the axial force bearing problem of a gear box under the high-speed heavy-load working condition is increasingly outstanding, and the thrust component is used as a key component for axial force transmission, so that the performance optimization becomes the core direction for breaking through the technical bottleneck. Currently, the sliding bearings used for the high-speed rotors of high-speed gearboxes on the market are generally two radial sliding bearings and two axial thrust bearings. Because the high-speed gear box is widely applied in the field of turbine compressors, the rotating speed of a thrust bearing bush on a high-speed gear rotor is high, the thrust bearing bush is easy to damage, and the high-speed rotor of the high-speed gear box connected with the turbine compressor is easy to generate instability, so that the whole turbine compressor is easy to damage and can not run. Disclosure of Invention The invention aims to provide a conical surface thrust structure for replacing a high-speed thrust bearing by a high-speed gear box, which is convenient for dispersing axial thrust borne by a high-speed driving gear and improving the service life and the running stability of equipment, so as to solve the problems in the prior art. In order to achieve the above purpose, the present invention provides the following technical solutions: a conical surface thrust structure for a high-speed gearbox to replace a high-speed thrust bearing comprises a lower shell, a driving gear, a thrust mechanism and a lubrication mechanism, the upper side of the lower shell is fixedly connected with an upper shell through a bolt, the thrust mechanism comprises two groups of large gears meshed with the driving gear, the pitch circle radius of the large gear is larger than that of the driving gear, the axle center of the driving gear is positioned at the central position of the connecting line of the axle centers of the two groups of large gears, the lower shell is internally provided with a first conical surface ring and a second conical surface ring, the outer edges of the two sides of the driving gear and the large gear are both conical surface designs, the thrust mechanism can collide with the outer edges of the driving gear and the large gear through the first conical surface ring and the second conical surface ring, meanwhile, the high-speed rotation of the driving gear is utilized to drive the large gear to rotate in a decelerating way, the purpose of axially pushing the driving gear is achieved by limiting the axial movement of the large gear, the lubricating mechanism comprises two groups of spray heads arranged on the upper shell, the output ends of the two groups of spray heads face to the joint of the big gear at two sides and the driving gear at the middle part respectively, the lubricating mechanism can be used for sucking lubricating oil at the bottom of the lower shell to the upper part in a linkage way when the large gear rotates and outputting the lubricating oil from the nozzle position to the joint of the large gear and the driving gear, so that the lubricating performance of the tooth surface and the conical surface position is improved, and an oil film is generated at the gap position, so that the friction force in the rotation interference process is reduced, the axial thrust borne by the high-speed driving gear is conveniently dispersed, and the service life and the running stability of the equipment are improved. Preferably, the thrust mechanism further comprises two groups of side plates which can be clamped with the inner wall of the lower shell and the inner wall of the upper shell, the two groups of side plates are respectively located on two sides of the driving gear, the first conical surface ring is provided with two conical surface positions which are respectively attached to and slide with two outer edges of two sides of the driving gear, the second conical surface ring is provided with four conical surface rings which are respectively attached to and slide with two outer edges of two sides of the large gear, the first conical surface ring and the second conical surface ring are both connected with the side plates in a rotating mode, connect