CN113339482A

CN113339482A - Lubricating structure of planetary reducer

Info

Publication number: CN113339482A
Application number: CN202110601449.3A
Authority: CN
Inventors: 程孝英
Original assignee: Foshan Rouist Transmission Equipment Co ltd
Current assignee: Foshan Rouist Transmission Equipment Co ltd
Priority date: 2021-05-31
Filing date: 2021-05-31
Publication date: 2021-09-03

Abstract

The invention provides a lubricating structure of a planetary speed reducer, and relates to the field of speed reducers. This planetary reducer's sun chinese mechanism, including the shell, the fixedly connected with oil tank on leaning on right side position outer wall in the middle of the shell top, the first oil pump of fixedly connected with on the shell top intermediate position outer wall, the output fixedly connected with oiling pipe of first oil pump, the fixedly connected with collection box on the shell bottom intermediate position outer wall. In the lubricating oil pumping oiling pipe in with the oil tank through first oil pump work, annular rack inboard surface is stayed to lubricating oil, through the driving gear, the meshing rotation effect between four driven gears and the annular rack, make lubricating oil evenly adhere to on the gear train surface, automatic control pours into lubricating oil into, it is too big to have avoided the volume of adding oil, unnecessary lubricating oil flows into the collection box through an oil pipe, second oil pump work is through the back flow with lubricating oil pumping oiling incasement again, the waste of lubricating oil has been avoided, be worth wideling popularize.

Description

Lubricating structure of planetary reducer

Technical Field

The invention relates to the technical field of speed reducers, in particular to a lubricating structure of a planetary speed reducer.

Background

The speed reducer is an independent part consisting of gear transmission, worm transmission and gear-worm transmission which are enclosed in a rigid shell, is commonly used as a speed reduction transmission device between a prime mover and a working machine, plays a role in matching rotating speed and transmitting torque between the prime mover and the working machine or an actuating mechanism, is an industrial product with wide application, can reduce the rotating speed of a motor and simultaneously increase output torque, and can be used as a matched part in industries such as lifting, excavating, transporting, building and the like.

Chinese patent document 202020882393.4 discloses a lubrication structure of a planetary gear train speed reduction mechanism and a planetary gear train speed reducer, wherein a cavity is arranged in a planetary carrier, a conical surface is arranged on a side wall of the cavity, a planetary carrier oil duct is arranged at a large end of the planetary carrier close to the conical surface, and a planetary shaft oil duct which can be communicated with both the planetary carrier oil duct and a planetary gear bearing is arranged in the planetary shaft. This patent is direct when lubricating the speed reducer inside with lubricating oil injection, and lubricating oil is through splashing in the box, spills at speed reducer machine incasement wall, because the permeability of oil is stronger, under the incasement pressure, which department is sealed untight, and where oil just oozes from to this patent is to the unable accurate accuse of the volume of injecting lubricating oil, if add oil quantity too much, makes a large amount of lubricating oil gather in shaft seal, faying face etc. department, leads to leaking.

Disclosure of Invention

Technical problem to be solved

Aiming at the defects of the prior art, the invention provides a lubricating structure of a planetary reducer, which solves the problems that lubricating oil in the prior planetary reducer is easy to leak and the oil injection amount cannot be controlled.

(II) technical scheme

In order to achieve the purpose, the invention is realized by the following technical scheme: the utility model provides a planetary reducer's lubricating structure, includes the shell, run through and be provided with evenly distributed's screw hole in the shell both sides wall thickness, the shell left side is provided with the output end cover, the shell right side is provided with the input end cover, the output end cover intermediate position runs through and the first sealing washer of fixedly connected with, the input end cover intermediate position runs through and the fixedly connected with second sealing washer, second sealing washer internal rotation is connected with the input shaft, input shaft one end fixedly connected with driving gear, fixedly connected with annular rack on the shell intermediate position inner wall, the driving gear meshes all around and is connected with four driven gear, four driven gear all is connected with the meshing between the annular rack.

Preferably, one side of the driven gear opposite to the input shaft is fixedly connected with a fixing column, a fixing plate is fixedly connected between one ends of the four fixing columns, an output shaft is fixedly connected to the middle position of one side of the fixing plate opposite to the fixing column, and one end of the output shaft penetrates through the first sealing ring and is rotatably connected with the first sealing ring.

Preferably, the output end cover and the input end cover are provided with through holes which are uniformly distributed in a penetrating manner, the positions of the through holes correspond to those of the threaded holes, and bolts are arranged in the through holes and are in threaded connection with the threaded holes.

Preferably, the inner wall of the middle position of the output end cover is fixedly connected with a ball bearing, and the output shaft is rotatably connected with the ball bearing.

Preferably, one side fixedly connected with friction sensor that the driving gear is relative with the input shaft, lean on fixedly connected with oil tank on the right side position outer wall in the middle of the shell top, the oil tank top is run through and is provided with the refrigerator, the first oil pump of fixedly connected with on the shell top intermediate position outer wall, run through and fixedly connected with connecting tube between first oil pump and the oil tank, lean on fixedly connected with controller and controller respectively and friction sensor and the electric connection between the first oil pump on the left side position outer wall in the middle of the shell top.

Preferably, the output fixedly connected with notes oil pipe and the notes oil pipe of first oil pump are located the shell wall thickness, the shape of notes oil pipe is semicircle annular and notes oil pipe's position and annular rack's position corresponding, the inboard fixedly connected with evenly distributed's of notes oil pipe oiling mouth and notes oil mouth run through shell and annular rack.

Preferably, fixedly connected with collection box on the shell bottom intermediate position outer wall, shell bottom intermediate position runs through and is provided with evenly distributed's play oil pipe and goes out the oil pipe bottom and all runs through the collection box, the collection box front end runs through and fixedly connected with second oil pump, the output end fixedly connected with back flow and back flow top of second oil pump run through and with oil tank between fixed connection.

Preferably, the output end cover and the input end cover are connected with the sealing ring in a sliding manner on the inner walls of the two sides of the shell in a manner of being adjacent to the shell, and the bottom of the output end cover and the bottom of the input end cover are connected with the supporting seat in a fixed manner.

The working principle is as follows: the friction force between the driving gear and each driven gear can be detected through the friction force sensor, the friction force is larger if lubricating oil is lacked, when the friction force exceeds a set value, the first oil pump is opened through the controller, the lubricating oil in the oil tank is pumped into the oil filling pipe through the connecting pipeline by the first oil pump, the lubricating oil is remained on the inner side surface of the annular rack through the oil filling port, the four driven gears are respectively meshed and rotated on the inner side of the annular rack to be uniformly stained with the lubricating oil, then the lubricating oil is uniformly stained on the driving gear through the meshing rotation between the driving gear and the four driven gears, the lubricating oil is uniformly stained on the surface of the gear set, the first oil pump is closed to stop the oil filling after the friction force is smaller than the set value, the lubricating oil can be slightly cooled through the refrigerating machine, the temperature inside the shell can be reduced while the lubricating performance is ensured through the low-temperature lubricating oil, can seal the faying face department between output end cover and input end cover and the shell through the sealing ring, can fill up and seal the gap department between output shaft and input shaft and output end cover and the input end cover through first sealing washer and second sealing washer, unnecessary lubricating oil drops in the shell bottom after the injection, flows into the collection box through an oil pipe in, and the second oil pump work is through the back flow with the lubricating oil in the collection box in pumping oil tank again, retrieves unnecessary lubricating oil.

(III) advantageous effects

The invention provides a lubricating structure of a planetary speed reducer. The method has the following beneficial effects:

1. the invention can detect the friction force between the driving gear and each driven gear through the friction force sensor, if the friction force is lack of lubricating oil, the friction force is larger, when the friction force exceeds a set value, the first oil pump is opened through the controller, the first oil pump works to pump the lubricating oil in the oil tank into the oil filling pipe through the connecting pipeline, the lubricating oil filling port is left on the inner side surface of the annular rack, the four driven gears are respectively meshed and rotated on the inner side of the annular rack to be evenly stained with the lubricating oil, then the driving gear and the four driven gears are meshed and rotated to evenly stain the lubricating oil on the driving gear, so that the lubricating oil is evenly adhered to the surface of the gear set, the first oil pump is closed to stop oil filling after the friction force is smaller than the set value, the lubricating oil is automatically controlled to be filled, the manual labor intensity is reduced, the oil filling amount is prevented from being too large, and the lubricating oil can be slightly cooled through the refrigerating machine, lubrication by the low-temperature lubricating oil can lower the temperature inside the casing while ensuring lubricating performance.

2. The joint surfaces between the output end cover and the shell and between the input end cover and the shell can be sealed through the sealing rings, and gaps between the output shaft and the input shaft and between the output end cover and the input end cover can be filled and sealed through the first sealing ring and the second sealing ring, so that the sealing performance of the speed reducer is improved, and the lubricating oil is prevented from splashing to generate leakage.

3. According to the invention, the excessive lubricating oil falls on the bottom of the shell after injection and flows into the recycling tank through the oil outlet pipe, the second oil pump works to pump the lubricating oil in the recycling tank into the oil tank through the return pipe, so that the excessive lubricating oil is recycled, and the waste of the lubricating oil is avoided.

Drawings

FIG. 1 is a perspective view of the present invention;

FIG. 2 is an exploded view of the present invention;

FIG. 3 is an internal structural view of the present invention;

fig. 4 is an internal exploded view of the present invention.

Wherein, 1, a shell; 2. an output end cover; 3. an input end cap; 4. a supporting seat; 5. an oil tank; 6. a refrigerator; 7. a first oil pump; 8. a controller; 9. a recycling bin; 10. a second oil pump; 11. a return pipe; 12. an output shaft; 13. a first seal ring; 14. a seal ring; 15. a ball bearing; 16. a threaded hole; 17. a through hole; 18. an input shaft; 19. a driving gear; 20. a driven gear; 21. a friction force sensor; 22. an annular rack; 23. an oil outlet pipe; 24. fixing a column; 25. a fixing plate; 26. an oil filling port; 27. an oil filling pipe; 28. a second seal ring; 29. connecting a pipeline; 30. and (4) bolts.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Example (b):

as shown in fig. 1-4, an embodiment of the present invention provides a lubrication structure of a planetary reducer, including a housing 1, threaded holes 16 are uniformly distributed and penetrate through the two side wall thicknesses of the housing 1, an output end cap 2 is disposed on the left side of the housing 1, an input end cap 3 is disposed on the right side of the housing 1, a first seal ring 13 is fixedly connected to the middle position of the output end cap 2, a second seal ring 28 is fixedly connected to the middle position of the input end cap 3, gaps between the output shaft 12 and the input shaft 18 and between the output end cap 2 and the input end cap 3 can be filled and sealed through the first seal ring 13 and the second seal ring 28, the input shaft 18 is rotatably connected to the second seal ring 28, a driving gear 19 is fixedly connected to one end of the input shaft 18, an annular rack 22 is fixedly connected to the inner wall of the middle position of the housing 1, four driven gears 20 are engaged and connected around the driving gear 19, the four driven gears 20 are all meshed with the annular rack 22, and the input shaft 18 rotates to drive the driving gear 19 to rotate, so that the four driven gears 20 are driven to rotate, and the driven gears 20 are meshed with the annular rack 22 to rotate.

The driven gear 20 and the opposite side of the input shaft 18 are fixedly connected with fixing columns 24, a fixing plate 25 is fixedly connected between one ends of the four fixing columns 24, an output shaft 12 is fixedly connected to the middle position of the opposite side of the fixing plate 25 and the fixing columns 24, one end of the output shaft 12 penetrates through the first sealing ring 13 and is rotatably connected with the first sealing ring 13, the fixing columns 24 are driven by the driven gear 20 to be worth of rotating the fixing plate 25, the purpose that the output shaft 12 rotates in the ball bearing 15 is achieved, and the purpose of reducing the rotating speed is achieved.

The output end cover 2 and the input end cover 3 are provided with through holes 17 which are evenly distributed in a penetrating mode, the positions of the through holes 17 correspond to the positions of the threaded holes 16, bolts 30 are arranged in the through holes 17, the bolts 30 are in threaded connection with the threaded holes 16, the bolts 30 penetrate through the through holes 17 and the threaded holes 16 to be in threaded connection, and the output end cover 2 and the input end cover 3 can be installed on the two sides of the shell 1.

The inner wall of the middle position of the output end cover 2 is fixedly connected with a ball bearing 15, and the output shaft 12 is rotatably connected with the ball bearing 15.

A friction force sensor 21 is fixedly connected to one side of the top of the shell 1 opposite to the input shaft 18, an oil tank 5 is fixedly connected to the outer wall of the position close to the right side in the middle of the top of the shell 1, a refrigerator 6 penetrates through the top of the oil tank 5 and can slightly cool lubricating oil through the refrigerator 6, the temperature inside the shell 1 can be lowered while the lubricating performance is ensured through the lubrication of low-temperature lubricating oil, a first oil pump 7 is fixedly connected to the outer wall of the middle of the top of the shell 1, a connecting pipeline 29 penetrates through and is fixedly connected between the first oil pump 7 and the oil tank 5, a controller 8 is fixedly connected to the outer wall of the position close to the left side in the middle of the top of the shell 1, the controller 8 is respectively and electrically connected with the friction force sensor 21 and the first oil pump 7, the friction force between the driving gear 19 and each driven gear 20 can be detected through the friction force sensor 21, and the friction force is larger if the lubricating oil is lacked, the first oil pump 7 is turned on by the controller 8 when the friction force exceeds a set value.

An oil filling pipe 27 is fixedly connected to the output end of the first oil pump 7, the oil filling pipe 27 is located in the wall thickness of the shell 1, the oil filling pipe 27 is in a semicircular ring shape, the position of the oil filling pipe 27 corresponds to the position of the annular rack 22, oil filling ports 26 which are uniformly distributed are fixedly connected to the inner side of the oil filling pipe 27, the oil filling ports 26 penetrate through the shell 1 and the annular rack 22, lubricating oil in the oil tank 5 is pumped into the oil filling pipe 27 through a connecting pipeline 29 when the first oil pump 7 works, the lubricating oil is left on the inner side surface of the annular rack 22 through the oil filling ports 26, the four driven gears 20 are respectively meshed and rotate on the inner side of the annular rack 22 and are further uniformly stained with the lubricating oil, then the lubricating oil is meshed and rotates between the driving gear 19 and the four driven gears 20, then the lubricating oil is uniformly stained on the driving gear 19, the lubricating oil is uniformly attached to the surface of the gear set, the first oil pump 7 is closed after the friction force is smaller than a set value, and the oil injection is stopped, the automatic control injects lubricating oil, has reduced artifical working strength to the volume of adding oil has been avoided too big.

Fixedly connected with collection box 9 on the 1 bottom intermediate position outer wall of shell, 1 bottom intermediate position of shell runs through and is provided with evenly distributed's play oil pipe 23 and goes out oil pipe 23 bottom and all runs through

collection box

9, 9 front ends of collection box run through and fixedly connected with

second oil pump

10, 11 tops of output fixedly connected with back flow of second oil pump 10 run through and with the oil tank 5 between fixed connection, unnecessary lubricating oil drops in 1 bottom of shell after the injection, flow into in collection box 9 through play oil pipe 23, second oil pump 10 work is through back flow 11 with the lubricating oil in the collection box 9 in the oil tank 5 is taken out again to unnecessary lubricating oil, retrieve unnecessary lubricating oil.

Output end cover 2 and input end cover 3 and the equal fixedly connected with sealing ring 14 in one side that shell 1 is adjacent and sealing ring 14 all sliding connection on the inner wall of 1 both sides of shell, can seal the faying face department between output end cover 2 and input end cover 3 and the shell 1 through sealing ring 14, have improved the sealing performance of speed reducer, avoid lubricating oil to splash and produce the leakage, output end cover 2 and the equal fixedly connected with supporting seat 4 in input end cover 3 bottom.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The utility model provides a planetary reducer's lubricating structure, includes shell (1), its characterized in that: threaded holes (16) which are uniformly distributed penetrate through the thickness of the two side walls of the shell (1), an output end cover (2) is arranged on the left side of the shell (1), an input end cover (3) is arranged on the right side of the shell (1), the middle position of the output end cover (2) penetrates through and is fixedly connected with a first sealing ring (13), the middle position of the input end cover (3) penetrates through and is fixedly connected with a second sealing ring (28), an input shaft (18) is rotationally connected in the second sealing ring (28), one end of the input shaft (18) is fixedly connected with a driving gear (19), an annular rack (22) is fixedly connected on the inner wall of the middle position of the shell (1), four driven gears (20) are meshed and connected with the periphery of the driving gear (19), and the four driven gears (20) are meshed and connected with the annular rack (22).

2. The lubrication structure of a planetary reducer according to claim 1, characterized in that: the driven gear (20) and one side opposite to the input shaft (18) are fixedly connected with fixing columns (24), a fixing plate (25) is fixedly connected between one ends of the four fixing columns (24), an output shaft (12) is fixedly connected to the middle position of one side opposite to the fixing columns (24) of the fixing plate (25), one end of the output shaft (12) penetrates through the first sealing ring (13) and is connected with the first sealing ring (13) in a rotating mode.

3. The lubrication structure of a planetary reducer according to claim 1, characterized in that: the output end cover (2) and the input end cover (3) penetrate through and are provided with uniformly distributed through holes (17), the positions of the through holes (17) correspond to those of the threaded holes (16), and bolts (30) are arranged in the through holes (17) and are in threaded connection with the threaded holes (16).

4. The lubrication structure of a planetary reducer according to claim 1, characterized in that: the inner wall of the middle position of the output end cover (2) is fixedly connected with a ball bearing (15), and the output shaft (12) is rotationally connected with the ball bearing (15).

5. The lubrication structure of a planetary reducer according to claim 1, characterized in that: driving gear (19) and one side fixedly connected with friction force sensor (21) that input shaft (18) is relative, lean on fixedly connected with oil tank (5) on the right side position outer wall in the middle of shell (1) top, oil tank (5) top is run through and is provided with refrigerator (6), first oil pump (7) of fixedly connected with on the shell (1) top intermediate position outer wall, run through and fixedly connected with connecting tube (29) between first oil pump (7) and oil tank (5), lean on fixedly connected with controller (8) and controller (8) respectively and friction force sensor (21) and electric connection between first oil pump (7) in the middle of shell (1) top on the left side position outer wall.

6. The lubrication structure of a planetary reducer according to claim 5, characterized in that: the output fixedly connected with of first oil pump (7) annotates oil pipe (27) and is located shell (1) wall thickness, the position that the shape of annotating oil pipe (27) is semicircle annular and annotates oil pipe (27) is corresponding with the position of annular rack (22), annotate oil pipe (27) inboard fixedly connected with evenly distributed's oiling mouth (26) and run through shell (1) and annular rack (22).

7. The lubrication structure of a planetary reducer according to claim 1, characterized in that: fixedly connected with collection box (9) on the shell (1) bottom intermediate position outer wall, shell (1) bottom intermediate position runs through and is provided with evenly distributed's play oil pipe (23) and goes out oil pipe (23) bottom and all runs through collection box (9), collection box (9) front end runs through and fixedly connected with second oil pump (10), the output fixedly connected with back flow (11) and back flow (11) top of second oil pump (10) run through and with oil tank (5) between fixed connection.

8. The lubrication structure of a planetary reducer according to claim 1, characterized in that: output end cover (2) and input end cover (3) all fixedly connected with sealing ring (14) and sealing ring (14) all sliding connection on shell (1) both sides inner wall with shell (1) adjacent one side, output end cover (2) and input end cover (3) bottom all fixedly connected with supporting seat (4).