Lubricating structure of speed reducer

Abstract

The utility model relates to the technical field of mechanical speed reduction devices, and particularly discloses a speed reducer lubricating structure which comprises a shell, an output disc rotationally connected to the right side in the shell through a bearing, a gear mechanism rotationally connected to the left side in the shell through a bearing, and a first lubricating oil way set arranged in the shell. The first lubricating oil way set is used for lubricating the bearing, and a second lubricating oil way set is arranged in the gear mechanism. According to the utility model, the oil ducts are arranged in the planet carrier, the positioning shaft and the planet wheel, so that centrifugal force generated when the planet wheel rotates is matched with the oil inlet pipe to supply oil, and therefore, lubricating oil can be sprayed into the inner gear, and the aim of lubricating a gear mechanism can be fulfilled.

Description

Technical Field

[0001] The utility model belongs to the technical field of mechanical speed reducers, and in particular relates to a speed reducer lubrication structure. Background Art

[0002] The reducer is an independent component consisting of a gear drive, a worm drive, and a gear-worm drive enclosed in a rigid housing. It is often used as a reduction transmission device between the prime mover and the working machine. It plays the role of matching the speed and transmitting the torque between the prime mover and the working machine or the actuator. It is widely used in modern machinery. There is a planetary reducer among the reducers. The planetary reducer is a widely used industrial product that can be used for AGV logistics unmanned vehicles.

[0003] As a power transmission mechanism, the planetary gear reducer uses planetary gears to reduce the number of revolutions of the motor to the desired number of revolutions. The planetary gears have the characteristics of compact and complex structure and small size. Due to structural limitations, the existing planetary gear reducers have the defect of insufficient lubrication. If the planetary gears run for a long time without sufficient lubrication, the planetary gear reducer will be damaged and its service life will be greatly shortened. Utility Model Content

[0004] The utility model aims to provide a reducer lubrication structure to solve the problem in the prior art that the planetary gears run for a long time without sufficient lubrication, which may cause damage to the planetary gear reducer and greatly shorten its service life.

[0005] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0006] A reducer lubrication structure includes a shell, an output disk is rotatably connected to the right side of the shell through a bearing, a gear mechanism is rotatably connected to the left side of the shell through a bearing, a first lubricating oil circuit group is arranged inside the shell, the first lubricating oil circuit group is used to lubricate the bearing, and a second lubricating oil circuit group is arranged inside the gear mechanism.

[0007] Preferably: the first lubricating oil circuit group includes an oil inlet pipe and a branch oil channel, the upper side wall of the shell is fixedly connected with the oil inlet pipe, the upper side wall of the shell is provided with a branch oil channel, the oil inlet pipe is connected to the branch oil channel, and the oil outlet ends on both sides of the branch oil channel penetrate into the interior of the bearing.

[0008] Preferably: the gear mechanism includes a planetary carrier and a planetary wheel, the planetary carrier is rotatably connected to the left side of the shell through a bearing, the right end of the planetary carrier is equidistantly fixedly connected to a positioning shaft, three groups of positioning shafts are arranged, the side walls of the positioning shafts are rotatably connected to the planetary wheels, the inner wall of the shell is fixedly connected to an internal gear, and the internal gear and the planetary wheel are meshed with each other.

[0009] Preferably, the right end of the positioning shaft is connected to the output disk by plugging.

[0010] Preferably: the second lubricating oil circuit group includes a branch oil channel and an annular oil channel, a branch oil channel and an annular oil channel are opened inside the planetary carrier, the branch oil channel is connected with the annular oil channel, the right end of the branch oil channel is connected with the branch oil channel, a straight oil channel is opened inside the positioning shaft, the left end of the straight oil channel is connected with the annular oil channel, a spray oil channel is opened inside the right side of the planetary gear, and the spray oil channel is connected with the straight oil channel.

[0011] Preferably: an input assembly is provided at the left end of the shell, the input assembly includes an input disc and a sun gear, the input disc is rotatably connected to the inner wall of the planetary carrier, an input shaft groove is provided on the left end face of the input disc, a fixed shaft is fixedly connected to the right end of the input disc, a sun gear is fixedly connected to the side wall of the fixed shaft, and the sun gear is meshed with the planetary gear.

[0012] Preferably, an oil drain pipe is fixedly connected to the side wall of the lower end of the shell, and the upper end of the oil drain pipe penetrates into the interior of the shell.

[0013] Compared with the prior art, the beneficial effects of the utility model are:

[0014] 1. The utility model provides oil passages inside the planet carrier, the positioning shaft and the planetary gear, so that the centrifugal force generated when the planetary gear rotates cooperates with the oil supply of the oil inlet pipe, so that the lubricating oil can be sprayed into the internal gear, thereby achieving the purpose of lubricating the gear mechanism.

[0015] 2. The utility model directly leads to the bearing through the branch oil passage, and when oil is supplied to the oil inlet pipe, the lubricating oil directly flows into the bearing, thereby directly lubricating the bearing, ensuring the normal operation of the planet carrier and extending its service life. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a schematic diagram of the lubrication structure of the reducer of the utility model;

[0017] Figure 2 This is a schematic diagram of the structure of the annular oil channel of the utility model when viewed from above;

[0018] Figure 3 This is a schematic diagram of the semi-section structure of the planetary gear and the positioning shaft of the utility model;

[0019] Figure 4 This is a schematic diagram of the half-section structure of the output disk of the utility model.

[0020] In the figure: 1. housing; 11. first lubricating oil circuit group; 111. oil inlet pipe; 112. branch oil channel; 12. oil drain pipe; 2. gear mechanism; 21. planetary carrier; 22. positioning shaft; 23. internal gear; 24. planetary gear; 25. second lubricating oil circuit group; 251. branch oil channel; 252. annular oil channel; 253. straight oil channel; 254. spray oil channel; 3. input assembly; 31. input disc; 32. input shaft groove; 33. fixed shaft; 34. sun gear; 4. output disc. DETAILED DESCRIPTION

[0021] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0022] Reference Figure 1 As shown, the utility model provides a reducer lubrication structure, including a housing 1, an output disk 4 is rotatably connected to the right side of the housing 1 through a bearing, a gear mechanism 2 is rotatably connected to the left side of the housing 1 through a bearing, a first lubricating oil circuit group 11 is arranged inside the housing 1, the first lubricating oil circuit group 11 is used to lubricate the bearings, and a second lubricating oil circuit group 25 is arranged inside the gear mechanism 2. Through the cooperation of the first lubricating oil circuit group 11 and the second lubricating oil circuit group 25, the lubricating oil is directly supplied to the inside of the housing 1, and then the bearings and the gear mechanism 2 can be lubricated, thereby ensuring the normal operation of the reducer and extending its service life.

[0023] In a further embodiment, referring to Figure 1 The first lubricating oil circuit group 11 includes an oil inlet pipe 111 and a branch oil passage 112. The oil inlet pipe 111 is fixedly connected to the upper side wall of the shell 1. The upper side wall of the shell 1 is provided with a branch oil passage 112. The oil inlet pipe 111 is connected to the branch oil passage 112, and the oil outlet ends on both sides of the branch oil passage 112 penetrate into the interior of the bearing.

[0024] In this embodiment, through the synergistic effect of the oil inlet pipe 111 and the branch oil channel 112, it is only necessary to introduce the lubricating oil from the oil inlet pipe 111 into the branch oil channel 112, and then the lubricating oil flows along the branch oil channel 112 to the bearing, thereby achieving the lubrication effect on the bearing, thereby effectively extending the service life of the bearing.

[0025] In a further embodiment, referring to Figure 1-Figure 4The gear mechanism 2 includes a planetary carrier 21 and a planetary gear 24. The planetary carrier 21 is rotatably connected to the left side of the housing 1 through a bearing. The right end of the planetary carrier 21 is equidistantly fixedly connected to a positioning shaft 22. The positioning shaft 22 is provided with three groups. The side wall of the positioning shaft 22 is rotatably connected to the planetary gear 24. The inner wall of the housing 1 is fixedly connected to an internal gear 23. The internal gear 23 and the planetary gear 24 are meshed with each other. The right end of the positioning shaft 22 is connected to the output disk 4 by plugging.

[0026] In this embodiment, due to the mutual meshing of the internal gear 23 and the planetary gear 24, the planetary gear 24 will move around the internal gear 23 when rotating, thereby driving the planetary carrier 21 to rotate. Since the right end of the positioning shaft 22 is connected to the output disk 4 by plug-in, the output disk 4 can rotate following the movement of the planetary carrier 21, providing the required power for the output disk 4.

[0027] In a further embodiment, referring to Figure 1-Figure 3 The second lubricating oil circuit group 25 includes a branch oil passage 251 and an annular oil passage 252. The branch oil passage 251 and the annular oil passage 252 are opened inside the planetary carrier 21. The branch oil passage 251 is connected to the annular oil passage 252. The right end of the branch oil passage 251 is connected to the branch oil passage 112. A straight oil passage 253 is opened inside the positioning shaft 22. The left end of the straight oil passage 253 is connected to the annular oil passage 252. A spray oil passage 254 is opened inside the right side of the planetary gear 24. The spray oil passage 254 is connected to the straight oil passage 253.

[0028] In this embodiment, the rotation of the planetary gear 24 causes the lubricating oil at both ends of the spray oil passage 254 inside it to be acted upon by centrifugal force, thereby spraying the lubricating oil onto the internal gear 23, thereby achieving lubrication of the gear mechanism 2; at the same time, the centrifugal force also causes the oil to be sucked into the straight oil passage 253. Since the straight oil passage 253 is connected to the annular oil passage 252, the annular oil passage 252 is connected to the branch oil passage 251, and the branch oil passage 251 is connected to the branch oil passage 112, the lubricating oil can be directly drawn from the branch oil passage 112. This process ensures that the lubricating oil can flow smoothly to the branch oil passage 251, thereby achieving continuous lubrication of the gear mechanism 2.

[0029] In a further embodiment, referring to Figure 1 An input assembly 3 is provided at the left end of the housing 1, and the input assembly 3 includes an input disc 31 and a sun gear 34. The input disc 31 is rotatably connected to the inner wall of the planet carrier 21, and an input shaft groove 32 is provided on the left end surface of the input disc 31. A fixed shaft 33 is fixedly connected to the right end of the input disc 31, and a sun gear 34 is fixedly connected to the side wall of the fixed shaft 33. The sun gear 34 and the planet gear 24 are meshed with each other.

[0030] In this embodiment, by inserting the external rotating shaft into the groove of the input shaft, the rotation of the external rotating shaft will drive the input disc 31 to rotate. The rotation of the input disc 31 further drives the fixed shaft 33 to rotate, and the rotation of the fixed shaft 33 drives the sun gear 34 to rotate. Since the sun gear 34 is meshed with the planetary gears 24, the rotation of the sun gear 34 will drive the planetary gears 24 to rotate. This chain reaction ultimately provides the required power for the oil supply system of the internal gear 23.

[0031] In a further embodiment, referring to Figure 1 An oil drain pipe 12 is fixedly connected to the side wall of the lower end of the shell 1, and the upper end of the oil drain pipe 12 passes through the interior of the shell 1.

[0032] In this embodiment, the lubricating oil can be effectively extracted from the inside of the housing 1 through the provided oil drain pipe 12, and the debris generated by the gear mechanism 2 during the friction process can be taken away at the same time. This design helps to increase the service life of the reducer.

[0033] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A reducer lubrication structure, comprising a housing (1), characterized in that: The right side of the housing (1) is rotatably connected to an output disk (4) via a bearing, and the left side of the housing (1) is rotatably connected to a gear mechanism (2) via a bearing. A first lubricating oil circuit group (11) is provided inside the housing (1), and the first lubricating oil circuit group (11) is used to lubricate the bearing. A second lubricating oil circuit group (25) is provided inside the gear mechanism (2).

2. A reducer lubrication structure according to claim 1, characterized in that: The first lubricating oil circuit group (11) comprises an oil inlet pipe (111) and a branch oil passage (112); the upper side wall of the housing (1) is fixedly connected with the oil inlet pipe (111); the upper side wall of the housing (1) is provided with a branch oil passage (112); the oil inlet pipe (111) is connected to the branch oil passage (112); and the oil outlet ends on both sides of the branch oil passage (112) penetrate into the interior of the bearing.

3. A reducer lubrication structure according to claim 1, characterized in that: The gear mechanism (2) comprises a planet carrier (21) and a planetary gear (24); the planet carrier (21) is rotatably connected to the left side of the housing (1) via a bearing; the right end of the planet carrier (21) is equidistantly fixedly connected to a positioning shaft (22); three groups of positioning shafts (22) are provided; the side wall of the positioning shaft (22) is rotatably connected to the planetary gear (24); the inner wall of the housing (1) is fixedly connected to an internal gear (23); the internal gear (23) and the planetary gear (24) are meshed with each other.

4. A reducer lubrication structure according to claim 3, characterized in that: The right end of the positioning shaft (22) is connected to the output disk (4) by plugging.

5. A reducer lubrication structure according to claim 3, characterized in that: The second lubricating oil passage group (25) comprises a branch oil passage (251) and an annular oil passage (252). The planetary carrier (21) is provided with a branch oil passage (251) and an annular oil passage (252). The branch oil passage (251) is connected to the annular oil passage (252). The right end of the branch oil passage (251) is connected to the branch oil passage (112). The positioning shaft (22) is provided with a straight oil passage (253). The left end of the straight oil passage (253) is connected to the annular oil passage (252). The right side of the planetary gear (24) is provided with a spray oil passage (254). The spray oil passage (254) is connected to the straight oil passage (253).

6. A reducer lubrication structure according to claim 3, characterized in that: An input assembly (3) is arranged at the left end of the housing (1), and the input assembly (3) comprises an input disc (31) and a sun gear (34). The input disc (31) is rotatably connected to the inner wall of the planet carrier (21), an input shaft groove (32) is provided on the left end surface of the input disc (31), a fixed shaft (33) is fixedly connected to the right end of the input disc (31), a sun gear (34) is fixedly connected to the side wall of the fixed shaft (33), and the sun gear (34) and the planet gear (24) are meshed with each other.

7. A reducer lubrication structure according to claim 1, characterized in that: An oil drain pipe (12) is fixedly connected to the side wall of the lower end of the shell (1), and the upper end of the oil drain pipe (12) penetrates into the interior of the shell (1).

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