Gearbox motor inversion sealing structure

Abstract

The present application relates to a kind of gear box motor inversion sealing structure, including motor and shell;Motor is installed upside down in the lower end of shell, transmission shaft and labyrinth sleeve are equipped in shell, transmission shaft is connected with shell by bearing, labyrinth sleeve is set on transmission shaft below bearing and is sealingly connected with transmission shaft;Lower end of shell is equipped with umbrella type cover, and umbrella type cover is sealingly connected between shell;Transmission shaft output end is out of shell via shell upper end, and transmission shaft input end is transmissionally connected with motor shaft by passing through umbrella type cover;Shell bottom is equipped with connecting pipe, and connecting pipe is communicated with the cavity of shell by passing through shell.The motor inversion of the present application can make transmission box design more compact, save space, in addition, the center of gravity distribution of entire machine tool can be changed, improve the overall stability of machine tool, while reducing the overall height of machine tool, so that motor, machinery, electrical and other components are easy to maintain, facilitate maintenance and maintenance.

Description

Technical Field

[0001] This invention relates to the field of transmission in the machine tool industry where space needs to be optimized, and to a design structure based on compact design and optimized spatial layout that meets the requirements of compact design. Background Technology

[0002] In some industrial applications, such as machine tools, automated production lines, and robots, space is often extremely valuable. Inverting the motor allows for a more compact product design, saving space. Furthermore, in the heavy-duty machine tool industry, inverting the motor can alter the center of gravity distribution, improving equipment stability. It also reduces the overall height of the product, making the motor, mechanical, and electrical components easier to maintain, repair, and service. Finally, adjusting the motor fan direction can effectively cover the motor's heat-generating components, improving heat dissipation efficiency. Inverted motor design involves improvements to traditional motor mounting methods, aiming to solve technical challenges in specific applications, such as improving efficiency, optimizing space, and enhancing cooling. This design requires comprehensive consideration of mechanical, electrical, and thermal management details to ensure the motor operates normally in its mounting position and achieves its intended performance goals. While inverted motor design offers significant advantages, it also presents challenges, typically involving adjustments and optimizations to the motor seals and the overall transmission structure. Summary of the Invention

[0003] To optimize space and improve cooling, this invention provides an inverted sealing structure for gearbox motors, which allows for a more compact product design, improved center of gravity distribution, and convenient maintenance.

[0004] To achieve the above objectives, the present invention adopts the following technical solution: A gearbox motor inverted sealing structure includes a motor and a housing with an inner cavity. The motor is inverted and installed at the lower end of the housing. A drive shaft and a labyrinth sleeve are provided inside the housing. The drive shaft is connected to the housing via a bearing. The labyrinth sleeve is fitted onto the drive shaft below the bearing and is sealed to the drive shaft. An umbrella-shaped sleeve is provided at the lower end of the housing, and the umbrella-shaped sleeve is sealed to the housing. The output end of the drive shaft passes through the upper end of the housing and exits the housing. The input end of the drive shaft passes through the umbrella-shaped sleeve and is connected to the motor shaft. A connecting pipe is provided at the bottom of the housing, and the connecting pipe passes through the housing and communicates with the inner cavity of the housing.

[0005] The input end of the drive shaft is connected to an external gear shaft, and the motor shaft is connected to an internal gear shaft. The external gear on the external gear shaft and the internal gear on the internal gear shaft are in a transmission engagement.

[0006] The external gear shaft is sleeved on the transmission shaft and connected by a flat key; one end of the external gear shaft is fixed to the transmission shaft by an end cover and screws, and the other end of the external gear shaft is in contact with the end face of the labyrinth sleeve.

[0007] The umbrella-shaped sleeve is sealed to the housing by a sealing ring and connected to the housing by screws.

[0008] The housing is equipped with a flange and a bearing sleeve; the bearing is housed inside the bearing sleeve and fixed to the bearing sleeve by the flange; the bearing sleeve is designed with cooling holes for cooling the bearing.

[0009] This invention utilizes a labyrinth sleeve and an umbrella-shaped sleeve designed and installed on the drive shaft to guide the lubricant to the bottom of the housing. The labyrinth sleeve and umbrella-shaped sleeve form an outer protective layer, enclosing the motor shaft and drive shaft inside.

[0010] The beneficial effects of this invention are: Inverting the motor allows for a more compact transmission box design, saving space. Furthermore, it alters the overall center of gravity distribution of the machine tool, improving its overall stability. Simultaneously, it reduces the overall height of the machine tool, making the motor, mechanical, and electrical components easier to maintain, repair, and service. Finally, adjusting the motor fan direction to blow air downwards from the shaft end effectively covers the heat-generating parts of the motor, improving heat dissipation efficiency. Attached Figure Description

[0011] Figure 1 This is a cross-sectional structural diagram of the present invention. Detailed Implementation

[0012] The present invention will be further described below with reference to the accompanying drawings and specific embodiments.

[0013] like Figure 1 The diagram shows a compact, space-optimized inverted gearbox design for a motor. It includes: 1. Motor; 2. Bolt; 3. Screw 1; 4. Connecting pipe; 5. Sealing ring 1; 6. Housing with an inner cavity; 7. End flange; 8. Bearing; 9. Bearing pad 1; 10. Bearing sleeve; 11. Bearing pad 2; 12. Drive shaft; 13. End cover; 14. Sealing ring 2; 15. Screw 2; 16. Labyrinth sleeve; 17. External gear; 18. Key 1; 19. Screw 3; 20. Umbrella sleeve; 21. Sealing ring 3; 22. Key 2; 23. Internal gear. The motor 1 is invertedly mounted and fixed to the lower end of the housing 6 by bolts 2. The housing 6 contains a drive shaft 12 and a labyrinth sleeve 16. The drive shaft 12 is connected to the housing 6 via a bearing 8. The labyrinth sleeve 16 is fitted onto the drive shaft 12 below the bearing 8 and is sealed to the drive shaft 12. An umbrella-shaped sleeve 20 is provided at the lower end of the housing 16, and is sealed to the housing 16. The output end of the drive shaft 12 passes through the upper end of the housing 6 and exits the housing 6. The input end of the drive shaft 12 passes through the umbrella-shaped sleeve 20 and is connected to the motor shaft. A connecting pipe 4 is fixed to the bottom of the housing 6 by screw 3, and passes through the housing 6, communicating with the inner cavity of the housing 6. The connecting pipe 4 is sealed to the housing 6 by a sealing ring 5.

[0014] The input end of the drive shaft 12 is connected to an external gear shaft, and the motor shaft is connected to an internal gear shaft. The external gear 17 on the external gear shaft and the internal gear 23 on the internal gear shaft are in transmission engagement.

[0015] The motor 1 is installed at the lower end of the housing 6. Since the bearing 8 is lubricated by oil, the oil flows down through the flange 7 to the lower end of the housing 6 and is guided to the oil tank through the connecting pipe 4 on the housing hole.

[0016] By designing and installing a labyrinth sleeve 16 and an umbrella-shaped sleeve 20 on the drive shaft 12, the lubricant is guided to the bottom of the housing. The labyrinth sleeve and the umbrella-shaped sleeve form an outer protective layer, surrounding the motor shaft 1 and the drive shaft 12 inside.

[0017] In addition, the labyrinth sleeve and the drive shaft are sealed with a sealing ring 214 to prevent oil leakage into the drive shaft due to radial loosening of the bearing.

[0018] The umbrella-shaped sleeve is sealed to the housing by a sealing ring 321 and connected to the housing by screws to ensure a firm axial connection of the umbrella-shaped sleeve without axial displacement.

[0019] The upper bearing sleeve 10 is connected to the housing 6 by screw 2 15. The bearing sleeve is designed with cooling holes to cool the bearing 8.

[0020] The bearing 8 is axially fixed to the bearing sleeve 10 via the end face flange 7 using screws 15.

[0021] There are two bearings 8, and the inner and outer rings of the two bearings 8 are axially pressed and fixed by bearing pad 1 9 and bearing pad 2 11 respectively.

[0022] Inside the umbrella-shaped sleeve 20, one end of the gear shaft 17 is fixed to the drive shaft 12 by the end cover 13 and screws 19. The drive shaft 12 has a key 18, through which power is transmitted. The other end is axially fixed to the bearing 8 by a labyrinth sleeve 16 to prevent axial movement, which could cause oil to enter the drive shaft and then the motor.

[0023] The transmission is carried out by the internal gear 23 and the external gear 17 through the key 22 to the drive shaft 12 and its end.

[0024] Connecting pipe 4 guides the oil to the oil tank, and the end is sealed by sealing ring 5 to prevent oil leakage.

[0025] The above description is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any changes or substitutions that can be easily conceived by those skilled in the art within the scope of the technology disclosed in the present invention should be included within the scope of protection of the present invention.

Claims

1. A gearbox motor inverted sealing structure, comprising a motor and a housing having an inner cavity; characterized in that: The motor is installed inverted at the lower end of the housing. Inside the housing, there is a drive shaft and a labyrinth sleeve. The drive shaft is connected to the housing through a bearing. The labyrinth sleeve is fitted onto the drive shaft below the bearing and is sealed to the drive shaft. At the lower end of the housing, there is an umbrella-shaped sleeve that is sealed to the housing. The output end of the drive shaft passes through the upper end of the housing and exits the housing. The input end of the drive shaft passes through the umbrella-shaped sleeve and is connected to the motor shaft. At the bottom of the housing, there is a connecting pipe that passes through the housing and communicates with the inner cavity of the housing.

2. The gearbox motor inverted sealing structure according to claim 1, characterized in that: The input end of the drive shaft is connected to an external gear shaft, and the motor shaft is connected to an internal gear shaft. The external gear on the external gear shaft and the internal gear on the internal gear shaft are in a transmission engagement.

3. The gearbox motor inverted sealing structure according to claim 2, characterized in that: The external gear shaft is sleeved on the transmission shaft and connected by a flat key; one end of the external gear shaft is fixed to the transmission shaft by an end cover and screws, and the other end of the external gear shaft is in contact with the end face of the labyrinth sleeve.

4. The gearbox motor inverted sealing structure according to claim 1, 2, or 3, characterized in that: The umbrella-shaped sleeve is sealed to the housing by a sealing ring and connected to the housing by screws.

5. The gearbox motor inverted sealing structure according to claim 1, 2, or 3, characterized in that: The housing is equipped with a flange and a bearing sleeve; the bearing is housed inside the bearing sleeve and fixed to the bearing sleeve by the flange; the bearing sleeve is designed with cooling holes for cooling the bearing.

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