Improved built-in planetary reducer driving roller structure

Abstract

The utility model discloses an improved driving roller structure with a built-in planetary reducer. The improved driving roller structure comprises a roller body, the planetary reducer and an input motor, the planetary reducer is arranged in one end of the roller body, the output end of the planetary reducer is fixedly connected with the roller body, and the planetary reducer is provided with a primary sun wheel shaft; a connecting flange is installed on the input motor and connected with a planetary reducer, an oil nozzle is arranged on the outer side of the connecting flange, an outer spline sleeve is connected to a motor shaft of the input motor, the outer spline sleeve is connected with a spline shaft, and the spline shaft is installed on the connecting flange through a bearing. The outer end of the spline shaft is connected with the input end of the first-stage sun wheel shaft in a sleeved mode. The backstop is directly installed on the first-stage sun wheel shaft, the installation precision of the backstop is effectively improved, meanwhile, the outer end of the spline shaft and the input end of the first-stage sun wheel shaft are connected in a sleeved mode, a connecting sleeve does not need to be used for connection, the number of parts is reduced, the structure is simple, and connection is more stable and reliable.

Description

Technical Field

[0001] The utility model relates to the field of driving roller technology, in particular to an improved driving roller structure with a built-in planetary reducer. Background Art

[0002] At present, the driving roller on the belt conveyor is generally driven by a built-in planetary reducer or a parallel shaft reducer. In order to prevent the influence of various emergencies such as power outages, a check valve needs to be installed to prevent the roller from running in the opposite direction. In the prior art, most of the check valves are installed in the planetary reducer, such as the external driving roller disclosed in the Chinese utility model CN ​​2260793Y. The installation position of the check valve 14 is connected to the reducer oil chamber. The check valve is immersed in the lubricating oil. Over time, the check valve components will be corroded, and problems such as slippage and locking failure will occur. Maintenance and disassembly are also very cumbersome. Secondly, the check valve has an increased number of reducer problems caused by the built-in reducer, which reduces the service life of the reducer. In addition, the influence of the lubricating oil, iron filings, etc. inside the reducer on the check valve shortens the service life of the check valve, and the subsequent replacement and disassembly of the check valve is cumbersome.

[0003] For this reason, there is another type of built-in planetary reducer drive roller, in which the backstop is installed at the input end of the planetary reducer and adopts separate grease lubrication to avoid problems such as slipping and corrosion of the backstop parts caused by oil lubrication. Bearing support is added between the connecting sleeve and the sun gear to improve the smoothness of the transmission, thereby improving the transmission efficiency; the backstop is installed on the input end for easy subsequent maintenance; the backstop is externally placed for separate heat dissipation, avoiding the increase of reducer problems caused by the built-in reducer and reducing the service life of the reducer; and the external backstop avoids the influence of the lubricating oil and iron filings inside the reducer on the backstop, which is beneficial to extend the service life of the backstop.

[0004] However, the inner ring of the backstop is connected to the spline shaft through a flat key, and the spline shaft is connected to the primary sun gear shaft, so the installation accuracy of the backstop is relatively low, and the primary sun gear shaft needs to be connected to the spline shaft using a connecting sleeve, which has a large number of parts and a complex structure, making the connection unreliable. Therefore, it is necessary to improve the current built-in planetary reducer drive roller. Utility Model Content

[0005] In view of this, the utility model aims to improve the deficiencies of the prior art, and its main purpose is to provide an improved built-in planetary reducer drive roller structure, which can effectively solve the problems of low installation accuracy of the check valve and unreliable connection of the existing built-in planetary reducer drive roller.

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

[0007] An improved built-in planetary reducer driving roller structure comprises a roller body, a planetary reducer and an input motor; the planetary reducer is arranged inside one end of the roller body, the output end of the planetary reducer is fixedly connected to the roller body, and the planetary reducer has a primary sun gear shaft; a connecting flange is installed on the input motor, the connecting flange is connected to the planetary reducer, an oil nozzle is arranged on the outer side of the connecting flange, an external spline sleeve is connected to the motor shaft of the input motor, the external spline sleeve is connected to a spline shaft, and the spline shaft is installed on the connecting flange through a bearing; the outer end of the spline shaft and the input end of the primary sun gear shaft are sleeved and connected to each other, the inner ring of a backstop is connected to the primary sun gear shaft through a flat key, the outer ring of the backstop is connected to the connecting flange through a first bolt for positioning, an oil chamber isolated from the planetary reducer is formed between the backstop and the bearing, and the oil chamber is connected to the oil nozzle.

[0008] Preferably, the outer end of the spline shaft is sleeved outside the input end of the primary sun gear shaft.

[0009] Preferably, a retaining ring for axial positioning is provided at the right end of the bearing, and the bearing adopts a self-lubricating bearing with a sealed end cover on the left side.

[0010] Preferably, the planetary reducer includes a primary planetary device and a secondary planetary device, the primary planetary device includes a primary sun gear shaft, a primary planetary gear, a primary planetary carrier and a primary inner gear ring; the primary planetary carrier is connected to the secondary planetary device through a spline, the secondary planetary device includes a secondary sun gear, a secondary planetary gear, a secondary planetary carrier and a secondary inner gear ring, the secondary planetary carrier is fixed to the flange by a second bolt, the secondary inner gear ring is connected to the drum body, and the drum body rotates driven by the secondary inner gear ring.

[0011] Compared with the prior art, the utility model has obvious advantages and beneficial effects. Specifically, it can be seen from the above technical solution that:

[0012] By directly installing the backstop on the primary sun gear shaft, the installation accuracy of the backstop is effectively improved. At the same time, the outer end of the spline shaft and the input end of the primary sun gear shaft are fitted and connected to each other, without the need for a connecting sleeve, thus reducing the number of parts, simplifying the structure, and making the connection more stable and reliable. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a cross-sectional schematic diagram of a preferred embodiment of the utility model.

[0014] Description of the accompanying drawings:

[0015] 10. Drum body 20. Planetary reducer

[0016] 21. First-stage sun gear shaft 22. First-stage planetary gear

[0017] 23. First-stage planet carrier 24. First-stage internal gear ring

[0018] 25. Secondary sun gear 26. Secondary planetary gear

[0019] 27. Secondary planet carrier 28. Secondary internal gear ring

[0020] 29. Flange 30. Input motor

[0021] 31. Motor shaft 40. Connecting flange

[0022] 41. Oil nozzle 42. Oil chamber

[0023] 51. External spline sleeve 52. Spline shaft

[0024] 53. Bearing 54. Backstop

[0025] 55. First bolt 56. Retaining ring DETAILED DESCRIPTION

[0026] Please refer to Figure 1 As shown, it shows the specific structure of a preferred embodiment of the utility model, including a drum body 10, a planetary reducer 20 and an input motor 30.

[0027] The planetary reducer 20 is arranged inside one end of the drum body 10, and the output end of the planetary reducer 20 is fixedly connected to the drum body 10. The planetary reducer 20 has a primary sun gear shaft 21; a connecting flange 40 is installed on the input motor 30, and the connecting flange 40 is connected to the planetary reducer 20. An oil nozzle 41 is arranged on the outer side of the connecting flange 40. An external spline sleeve 51 is connected to the motor shaft 31 of the input motor 30, and the external spline sleeve 51 is connected to a spline shaft 52. The spline shaft 52 is connected to the spline shaft 52 through a bearing 53. Installed on the connecting flange 40, the outer end of the spline shaft 52 and the input end of the primary sun gear shaft 21 are sleeved and connected to each other, the inner ring of a check valve 54 is connected to the primary sun gear shaft 21 through a flat key, and the installation accuracy of the check valve 54 is improved. The outer ring of the check valve 54 is connected and positioned with the connecting flange 40 through a first bolt 55. An oil chamber 42 isolated from the planetary reducer 20 is formed between the check valve 54 and the bearing 53. The oil chamber 42 is connected to the oil nozzle 41, and grease can be regularly added to the oil chamber 42 through the oil nozzle 41. In this embodiment, a retaining ring 56 for axial positioning is provided at the right end of the bearing 53, and the bearing 53 adopts a self-lubricating bearing with a sealed end cover on the left side. In addition, the outer end of the spline shaft 52 is sleeved outside the input end of the primary sun gear shaft 21, and the connection is stable and reliable.

[0028] Specifically, the planetary reducer 20 includes a primary planetary device and a secondary planetary device. The primary planetary device includes a primary sun gear shaft 21, a primary planetary gear 22, a primary planetary carrier 23 and a primary inner gear ring 24; the primary planetary carrier 23 is connected to the secondary planetary device through a spline, and the secondary planetary device includes a secondary sun gear 25, a secondary planetary gear 26, a secondary planetary carrier 27 and a secondary inner gear ring 28. The secondary planetary carrier 27 is fixed to a flange 29 by a second bolt, and the flange 29 is fixedly connected to a connecting flange 40. The secondary inner gear ring 28 is connected to a drum body 10, and the drum body 10 rotates driven by the secondary inner gear ring 28.

[0029] The working principle of this embodiment is described in detail as follows:

[0030] During operation, the input motor 30 runs and drives the drum body 10 to rotate through the planetary reducer 20. When the input motor 30 stops, the backstop 54 can prevent the planetary reducer 20 from running in the reverse direction, thereby preventing the drum body 10 from rotating in the reverse direction.

[0031] The design focus of the utility model is: by directly installing the backstop on the primary sun gear shaft, the installation accuracy of the backstop is effectively improved, and at the same time, the outer end of the spline shaft and the input end of the primary sun gear shaft are sleeved and connected to each other, without the need for a connecting sleeve, reducing the number of parts, simplifying the structure, and making the connection more stable and reliable.

[0032] The technical principle of the present invention is described above in combination with specific embodiments. These descriptions are only for explaining the principle of the present invention and cannot be interpreted as limiting the protection scope of the present invention in any way. Based on the explanations here, technicians in this field can think of other specific implementation methods of the present invention without creative work, and these methods will fall within the protection scope of the present invention.

Claims

1. An improved built-in planetary reducer driving drum structure, comprising a drum body, a planetary reducer and an input motor; the planetary reducer is arranged inside one end of the drum body, the output end of the planetary reducer is fixedly connected to the drum body, and the planetary reducer has a primary sun gear shaft; a connecting flange is installed on the input motor, the connecting flange is connected to the planetary reducer, an oil nozzle is arranged on the outer side of the connecting flange, an external spline sleeve is connected to the motor shaft of the input motor, the external spline sleeve is connected to a spline shaft, and the spline shaft is installed on the connecting flange through a bearing; characterized in that: The outer end of the spline shaft and the input end of the first-stage sun gear shaft are sleeved and connected to each other, the inner ring of a backstop is connected to the first-stage sun gear shaft through a flat key, the outer ring of the backstop is connected to the connecting flange through a first bolt for positioning, and an oil chamber isolated from the planetary reducer is formed between the backstop and the bearing, and the oil chamber is connected to the oil nozzle.

2. The improved built-in planetary reducer driving roller structure as claimed in claim 1, characterized in that: The outer end of the spline shaft is sleeved outside the input end of the primary sun gear shaft.

3. The improved built-in planetary reducer driving roller structure as claimed in claim 1, characterized in that: A retaining ring for axial positioning is arranged at the right end of the bearing, and the bearing adopts a self-lubricating bearing with a sealed end cover on the left side.

4. The improved built-in planetary reducer driving roller structure as claimed in claim 1, characterized in that: The planetary reducer includes a primary planetary device and a secondary planetary device, the primary planetary device includes a primary sun gear shaft, a primary planetary gear, a primary planetary carrier and a primary inner gear ring; the primary planetary carrier is connected to the secondary planetary device through a spline, the secondary planetary device includes a secondary sun gear, a secondary planetary gear, a secondary planetary carrier and a secondary inner gear ring, the secondary planetary carrier is fixed to the flange by a second bolt, the secondary inner gear ring is connected to the drum body, and the drum body rotates under the drive of the secondary inner gear ring.

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