Internal lubricating device applied to vertically-mounted compact planetary reducer

Abstract

The utility model discloses an internal lubricating device applied to a vertically mounted compact planetary reducer, which relates to the field of reducers and comprises a planet carrier, an input shaft, a planet wheel shaft and a planet wheel, the input shaft and the planet wheel shaft are both arranged in the planet carrier, and the planet wheel is arranged on the shaft wall of the planet wheel shaft through a first bearing. Teeth of the input shaft are meshed with the planet wheel, one side of the planet wheel is meshed with an inner gear, and the inner gear is fixed on the box body through a pin positioning bolt; internal lubricating devices are arranged at the top and the bottom of one side of the planet carrier, each internal lubricating device comprises a base, a mounting pin shaft and an oil throwing device, each base is fixedly mounted on the side wall of the planet carrier, and one end of each mounting pin shaft is fixedly connected with the side wall of the corresponding base. The speed reducer is small in structural size and flexible in installation, and can be adjusted to adapt to the size on a multi-stage large speed reducer with an overlarge height difference, and the installation number can be increased stage by stage according to the circumstances to improve the lubricating effect.

Description

Technical Field

[0001] The utility model relates to the field of speed reducers, in particular to an internal lubrication device applied to a vertically installed compact planetary speed reducer. Background Art

[0002] Planetary reducer is a highly efficient, compact and powerful transmission device with smooth operation and excellent impact resistance. It has a large transmission ratio and can achieve a large reduction ratio in a small space while maintaining a compact structure and small size. It has high transmission efficiency and strong load-bearing capacity. It is easy to install and has a compact structure. It is widely used in automation equipment, robotics, industrial production, engineering machinery and other fields. Good lubrication can effectively prevent abnormal wear of the friction pair of the equipment, prevent lubricating oil leakage, prevent impurities and foreign matter from entering between the friction pair surfaces, and prevent the decline of the operating reliability of mechanical equipment and equipment damage. Reduce lubrication failures, improve equipment productivity and reduce equipment operation and maintenance costs. Inadequate cooling and lubrication will significantly increase bearing wear, which will lead to gear play and even damage to the reducer, greatly increasing costs.

[0003] Under the current environment, most of the vertically installed planetary reducers require the use of external forced lubrication systems (such as compensation oil tanks and motor pumps) or oil immersion lubrication and oil pool lubrication. However, most of the cases in which planetary reducers are selected take into account the advantages of compact structure and small use space of planetary reducers. In this case, the external lubrication device greatly increases the occupied space and increases the cost, and cannot give full play to the compact structure advantages of the planetary reducer. At the same time, the system is complex, and the reliability of the oil pump and oil cooler directly affects the normal operation of the equipment. The oil pipeline requires a lot of inspection and maintenance due to the possibility of oil leakage. If the lubricating oil flow is not adjusted properly, it is easy to cause oil leakage in the bearing box. Oil immersion lubrication consumes too much oil in vertical installation and cannot be applied to high-speed working conditions. Oil pool lubrication has more stringent space requirements and will cause greater power loss. In addition, oil bath lubrication mainly relies on heat dissipation for cooling, and the cooling effect is biased. At the same time, it is difficult to monitor the oil quality during operation, and oil filtering cannot be performed. Utility Model Content

[0004] In view of the problems existing in the internal lubrication device of the above-mentioned existing planetary reducer, the present utility model is proposed.

[0005] Therefore, the utility model aims to provide an internal lubrication device for a vertically mounted compact planetary reducer, which solves the problems raised by the background technology.

[0006] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0007] An internal lubrication device for a vertically mounted compact planetary reducer comprises a planetary carrier, an input shaft, a planetary gear shaft and a planetary gear, wherein the input shaft and the planetary gear shaft are both arranged inside the planetary carrier, the planetary gear is arranged on the shaft wall of the planetary gear shaft through a first bearing, the teeth of the input shaft are meshed with the planetary gear, one side of the planetary gear is meshed with an internal gear, and the internal gear is fixed to a housing through a pin positioning bolt; an internal lubrication device is arranged on the top and bottom of one side of the planetary carrier, the internal lubrication device comprises a base, a mounting pin shaft and an oil throwing device, the base is fixedly mounted on the side wall of the planetary carrier, one end of the mounting pin shaft is fixedly connected to the side wall of the base, the oil throwing device is fixedly mounted on the shaft wall of the mounting pin shaft, and the oil throwing device is provided with double-sided arc plates.

[0008] Preferably, a sealing support is provided between the planetary gear shaft and the planetary carrier, and the sealing support is fixedly connected to the bottom side wall of the planetary carrier by means of locking screws.

[0009] Preferably, the top and the bottom of the base are both provided with clamping plates that are arranged in contact with the side walls of the planetary frame, and the clamping plates are fixedly connected to the base by mounting screws.

[0010] Preferably, the outer wall of the mounting screw is provided with a pad which is in contact with the base.

[0011] Furthermore, a second bearing is provided between the shaft wall of the mounting pin and the oil-throwing device, and the second bearing is a needle bearing.

[0012] Preferably, one end of the mounting pin is provided with an elastic retaining ring for clamping the oil-throwing device.

[0013] In the above technical solution, the technical effects and advantages provided by the utility model are:

[0014] The utility model is provided with a base, a mounting pin and an oil-throwing device. During the operation of the reducer, only the lubricating oil that is soaked below the center line of the device needs to be added internally. The high-speed rotation of the input shaft of the reducer will drive the planetary carrier and the internal lubrication device to rotate at a high speed. At this time, one side of the double-sided arc plates on the oil-throwing device will obtain a thrust in the opposite direction of rotation under the resistance of the lubricating oil, thereby driving the double-sided arc plates of the oil-throwing device to rotate. The double-sided arc plates on the other side will throw the lubricating oil upward to lubricate the various bearings located above during the overall rotation. The lubricating oil thrown to the inner wall of the box will also be reflected and splashed into oil mist for further lubrication. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in the present utility model. For ordinary technicians in this field, other drawings can also be obtained based on these drawings.

[0016] Figure 1 It is a schematic diagram of the structure of the utility model;

[0017] Figure 2 For the utility model Figure 1 A schematic diagram of the structure of the internal lubrication device;

[0018] Figure 3 For the utility model Figure 1 Side view of the internal lubrication device.

[0019] Description of reference numerals:

[0020] 1. Planet carrier; 2. Input shaft; 3. Planetary gear shaft; 4. Planetary gear; 5. First bearing; 6. Internal gear; 7. Internal lubrication device; 8. Base; 9. Mounting pin; 10. Oil throwing device; 11. Sealing support; 12. Locking screw; 13. Clamp; 14. Mounting screw; 15. Pad; 16. Second bearing; 17. Circlip. DETAILED DESCRIPTION

[0021] In order to enable those skilled in the art to better understand the technical solution of the present invention, the present invention will be further described in detail below in conjunction with the accompanying drawings.

[0022] The utility model embodiment discloses an internal lubrication device applied to a vertically mounted compact planetary reducer.

[0023] The utility model provides Figure 1-3An internal lubrication device for a vertically mounted compact planetary reducer is shown, comprising a planet carrier 1, an input shaft 2, a planetary wheel shaft 3 and a planetary wheel 4. The input shaft 2 and the planetary wheel shaft 3 are both arranged inside the planet carrier 1. The planetary wheel 4 is arranged on the shaft wall of the planetary wheel shaft 3 through a first bearing 5. The teeth of the input shaft 2 are meshed with the planetary wheel 4. An internal gear 6 is meshed on one side of the planetary wheel 4, and the internal gear 6 is fixed to the housing through a pin positioning bolt. The planet carrier 1 is driven to rotate through the gear transmission among the input shaft 2, the planetary wheel 4 and the internal gear 6 to transmit the torque to the next level. In this process, the first bearing 5 needs to be sufficiently lubricated. For some bearings vertically above the vertical reducer, external forced intervention or other previously described lubrication methods have been required. An internal lubrication device 7 is provided at the top and bottom of one side of the planetary carrier 1. The internal lubrication device 7 includes a base 8, a mounting pin 9 and an oil-slinging device 10. The base 8 is fixedly mounted on the side wall of the planetary carrier 1. One end of the mounting pin 9 is fixedly connected to the side wall of the base 8. The mounting pin 9 and the base 8 are designed in an integrated manner, and the structure is stable and has higher strength and is not easy to be damaged. The oil-slinging device 10 is fixedly mounted on the shaft wall of the mounting pin 9, and a double-sided arc plate is provided on the oil-slinging device 10. The double-sided arc plates are evenly distributed to ensure balance. A second bearing 16 is provided between the shaft wall of the mounting pin 9 and the oil-slinging device 10, and the second bearing 16 adopts a needle bearing. The needle bearing 16 has a compact radial structure and is particularly suitable for The supporting structure has a limited radial installation dimension, and one end of the mounting pin 9 is provided with an elastic retaining ring 17 for clamping the oil-throwing device 10. The elastic retaining ring 17 can firmly clamp the oil-throwing device 10 on the mounting pin 9. The high-speed rotation of the input shaft 2 of the reducer will drive the planetary carrier 1 and the internal lubrication device 7 to rotate at high speed. At this time, one side of the double-sided arc plate on the oil-throwing device 10 will obtain a thrust in the opposite direction of rotation under the resistance of the lubricating oil, thereby driving the double-sided arc plates of the oil-throwing device to rotate. The double-sided arc plates on the other side will throw the lubricating oil upward to lubricate the bearings at all levels located above during the overall rotation process, and the lubricating oil thrown to the inner wall of the box will also be reflected and splashed into oil mist for further lubrication.

[0024] In order to ensure that the planetary gear shaft 3 and the planetary carrier 1 are sealed and firmly installed, Figure 1 As shown, a sealing support 11 is provided between the planetary gear shaft 3 and the planetary carrier 1 , and the sealing support 11 is fixedly connected to the bottom side wall of the planetary carrier 1 by means of locking screws 12 .

[0025] Finally, in order to be able to securely install the base 8, as Figure 2As shown, the top and bottom of the base 8 are provided with a clamping plate 13 which is set in contact with the side wall of the planetary frame 1. The clamping plate 13 is fixedly connected to the base 8 by means of mounting screws 14. The outer wall of the mounting screws 14 is provided with a pad 15 which is set in contact with the base 8. The pad 15 can increase the installation tightness. The positions of the upper and lower clamping plates 13 are adjustable and fixed by means of the mounting screws 14. This mounting structure enables the internal lubrication device 7 to have certain flexible installation conditions, and can adapt to the lubrication requirements of vertical reducers of different plate thicknesses and different models.

[0026] The above only describes some exemplary embodiments of the present invention by way of illustration. It is undoubted that those skilled in the art can modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the above drawings and descriptions are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.

Claims

1. An internal lubrication device for a vertically mounted compact planetary reducer, comprising a planet carrier (1), an input shaft (2), a planetary wheel shaft (3) and a planetary wheel (4), characterized in that: The input shaft (2) and the planetary gear shaft (3) are both arranged inside the planetary carrier (1); the planetary gear (4) is arranged on the shaft wall of the planetary gear shaft (3) via a first bearing (5); the teeth of the input shaft (2) are meshed with the planetary gear (4); an internal gear (6) is meshed on one side of the planetary gear (4); and the internal gear (6) is fixed to the housing via a pin positioning bolt; An internal lubrication device (7) is provided at the top and bottom of one side of the planet carrier (1), and the internal lubrication device (7) comprises a base (8), a mounting pin (9) and an oil-slinging device (10), wherein the base (8) is fixedly mounted on the side wall of the planet carrier (1), one end of the mounting pin (9) is fixedly connected to the side wall of the base (8), and the oil-slinging device (10) is fixedly mounted on the shaft wall of the mounting pin (9), and the oil-slinging device (10) is provided with double-side arc plates.

2. The internal lubrication device for a vertically mounted compact planetary reducer according to claim 1, characterized in that: A sealing support member (11) is provided between the planetary gear shaft (3) and the planetary carrier (1), and the bottom side wall of the planetary carrier (1) is fixedly connected to the sealing support member (11) via a locking screw (12).

3. The internal lubrication device for a vertically mounted compact planetary reducer according to claim 1, characterized in that: The top and bottom of the base (8) are both provided with clamping plates (13) arranged in contact with the side walls of the planetary frame (1), and the clamping plates (13) are fixedly connected to the base (8) by means of mounting screws (14).

4. The internal lubrication device for a vertically mounted compact planetary reducer according to claim 3, characterized in that: The outer wall of the mounting screw (14) is provided with a backing plate (15) that is arranged in contact with the base (8).

5. The internal lubrication device for a vertically mounted compact planetary reducer according to claim 1, characterized in that: A second bearing (16) is provided between the shaft wall of the mounting pin shaft (9) and the oil-throwing device (10), and the second bearing (16) is a needle bearing.

6. The internal lubrication device for a vertically mounted compact planetary reducer according to claim 1, characterized in that: One end of the mounting pin shaft (9) is provided with an elastic retaining ring (17) for clamping the oil-throwing device (10).

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