Oil-immersed outdoor unit

Abstract

The invention provides an oil-immersed outdoor unit, and relates to the technical field of roller shutter door motors, the oil-immersed outdoor unit comprises a motor cylinder and a gear box, the motor cylinder is provided with a motor shaft extending into the gear box, and the motor shaft is connected with an output shaft extending out of the gear box; a sealing ring is arranged at the joint of the gear box and the motor cylinder, a first framework oil seal is arranged at the joint of the gear box and the motor shaft, a second framework oil seal is arranged at the joint of the gear box and the output shaft, and the gear box is filled with lubricating oil. According to the oil-immersed outdoor unit, the gearbox is sealed through the framework oil seal and the sealing ring, then the gearbox is filled with lubricating oil, an oil seal structure is directly formed, the lubricating effect between the motor shaft and the output shaft is guaranteed, the service life is effectively prolonged, and safety and stability are better.

Description

Technical Field

[0001] The present invention relates to the technical field of rolling door motors, and in particular to an oil-immersed external motor. Background Art

[0002] At present, electric rolling doors are widely used in houses, warehouses, shops, etc., among which lifting doors are an industrial door used in industrial plants. Due to their high sealing and safety performance, they are widely used in factory gates. The lifting doors include a door body, a sprocket transmission mechanism, and columns installed on both sides of the door body. The chain transmission mechanism includes a driving motor and a chain. The chain is installed in the column and fixedly connected to the door body. The chain transmission is driven by the driving motor to realize the opening and closing of the door assembly, so that the driving motor of the lifting door is externally installed, which is called an external machine or external motor in the industry.

[0003] An important performance of a lifting door is the lifting speed and lifting quality, and another important performance is stable use and service life. Now the requirements for fast and large-mass lifting doors are getting higher and higher, the wear of the external machine is getting more and more serious, the stability will be worse, and the requirements for safety assurance are getting higher and higher. The external machine uses gear meshing deceleration and needs to be lubricated at the gear meshing position. The existing lubrication is to regularly add lubricating oil or use grease to lubricate the gears.

[0004] However, for doors in special industries, such as safe doors and cold storage doors, these doors not only have high quality and high speed, but also are opened much more frequently than ordinary factory rolling doors. As a result, under the existing lubrication method, the service life of the door is only half a year to a year, by which time the wear and tear will increase and safety will not be guaranteed.

[0005] Therefore, in order to solve the above problems, it is necessary for us to design a reasonable and efficient oil-immersed external machine. Summary of the invention

[0006] The purpose of the present invention is to provide an oil-immersed external machine, which seals the gear box by using a skeleton oil seal and a sealing ring, and then fills the gear box with lubricating oil to directly form an oil seal structure, so that the lubrication effect between the motor shaft and the output shaft is guaranteed, the service life is effectively extended, and the safety and stability are better.

[0007] In order to achieve the above object, the present invention adopts the following technical solutions: An oil-immersed external machine includes a motor barrel and a gear box, wherein the motor barrel is provided with a motor shaft extending into the gear box, and the motor shaft is connected to an output shaft extending outside the gear box; a sealing ring is provided at the connection between the gear box and the motor barrel, a first skeleton oil seal is provided at the connection between the gear box and the motor shaft, a second skeleton oil seal is provided at the connection between the gear box and the output shaft, and the gear box is filled with lubricating oil.

[0008] As a preferred embodiment of the present invention, the output shaft is coaxially provided with an output gear, the motor shaft is connected to the output gear, and the motor shaft and the output gear are both provided with helical gear stripes.

[0009] As a preferred embodiment of the present invention, a deceleration transition piece is arranged between the output shaft and the motor shaft, and the deceleration transition piece includes a transition shaft and a transition gear coaxially arranged with the transition shaft, the transition gear is meshingly connected with the motor shaft, and the transition shaft is meshingly connected with the output gear; the transition shaft and the transition gear are both provided with helical gear stripes.

[0010] As a preferred embodiment of the present invention, a first limit bearing is provided at one end of the transition shaft away from the transition gear, a second limit bearing is provided at one end of the transition gear away from the transition shaft, a first limit cylinder for facilitating the installation of the first limit bearing is provided on the gear box, and a second limit cylinder for facilitating the installation of the second limit bearing is provided on the motor cylinder.

[0011] As a preferred embodiment of the present invention, the gear box is connected to the motor barrel through connecting bolts, and a sealing gasket is provided at the connection between the gear box and the connecting bolts.

[0012] As a preferred embodiment of the present invention, the number of the connecting bolt is at least one, and the gear box is provided with a bolt barrel for facilitating the installation of the connecting bolt.

[0013] As a preferred embodiment of the present invention, the gear box is provided with a shaft cylinder for facilitating the installation of the output shaft; the bolt cylinder is connected to the shaft cylinder via reinforcing ribs.

[0014] As a preferred embodiment of the present invention, a functional gear is arranged on the outer side of the output shaft, and the functional gear is meshingly connected with an absolute encoder; the functional gear is arranged on a side of the second skeleton oil seal away from the motor shaft.

[0015] As a preferred embodiment of the present invention, the gear box is provided with an encoder compartment for accommodating the absolute value encoder.

[0016] As a preferred embodiment of the present invention, the gear box is an integrally formed part.

[0017] The beneficial effect of the oil-immersed external machine of the present invention is that the gear box is sealed by using a skeleton oil seal and a sealing ring, and then the gear box is filled with lubricating oil to directly form an oil seal structure, so that the lubrication effect between the motor shaft and the output shaft is guaranteed, the service life is effectively extended, and the safety and stability are better; The motor shaft and the output shaft are driven by helical gears, which ensures stable deceleration effect, high overload resistance, low vibration and low noise. It can be used stably on various doors with high speed and large lifting mass. The oil seal structure can provide stable and continuous lubrication for the helical gear structure, which is safer. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the overall structure of an embodiment of an oil-immersed external machine of the present invention; Figure 2 It is a three-dimensional structural schematic diagram of the overall structure of an embodiment of an oil-immersed outboard machine of the present invention when the gear box is in a transparent state; Figure 3 It is a schematic diagram of the three-dimensional structure of a gear box in one embodiment of an oil-immersed outboard machine of the present invention; In the figure: 1. motor cylinder, 11. motor, 2. gear box, 21. first skeleton oil seal, 22. second skeleton oil seal, 23. sealing ring, 24. first limit cylinder, 25. sealing gasket, 26. bolt cylinder, 27. shaft cylinder, 28. reinforcing rib, 29. encoder compartment, 3. motor shaft, 4. output shaft, 41. output gear, 42. functional gear, 43. absolute encoder, 5. deceleration transition piece, 51. transition shaft, 52. transition gear, 53. first limit bearing, 54. second limit bearing. DETAILED DESCRIPTION

[0019] The following are specific embodiments of the present invention, which further describe the technical solutions of the present invention, but the present invention is not limited to these embodiments.

[0020] Various exemplary embodiments of the present invention will now be described in detail with reference to the accompanying drawings. It should be noted that unless otherwise specifically stated, the relative arrangement and steps of modules and steps set forth in these embodiments do not limit the scope of the present invention.

[0021] At the same time, it should be understood that for the convenience of description, the processes in the drawings are not just performed separately, but multiple steps are performed in an interlaced manner.

[0022] In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, or the positions or positional relationships in which the product of the present invention is usually placed when in use. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", etc. are only used to distinguish the description, and cannot be understood as indicating or implying relative importance.

[0023] The following description of at least one exemplary embodiment is merely illustrative in nature and is in no way intended to limit the invention, its application, or uses.

[0024] Technologies, methods, and systems known to ordinary technicians in the relevant art may not be discussed in detail, but where appropriate, the technologies, methods, and systems should be considered part of the specification.

[0025] Embodiment 1: Figures 1 to 3 The figure shown is only one of the embodiments of the present invention, an oil-immersed external machine, including a motor barrel 1 and a gear box 2, the motor barrel 1 is provided with a motor shaft 3 extending into the gear box 2, the motor shaft 3 is connected with an output shaft 4 extending outside the gear box 2; a sealing ring 23 is provided at the connection between the gear box 2 and the motor barrel 1, a first skeleton oil seal 21 is provided at the connection between the gear box 2 and the motor shaft 3, a second skeleton oil seal 22 is provided at the connection between the gear box 2 and the output shaft 4, and the gear box 2 is filled with lubricating oil.

[0026] In the present invention, the entire external machine structure includes a motor barrel 1 that accommodates a motor 11 and a gear box 2 for rotating the motor 11 for reducing the output. The gear box 2 is connected to the motor barrel 1. The motor barrel 1 adopts a conventional motor barrel 1 structure, and the gear box 2 is improved. The motor shaft 3 of the motor 11 in the motor barrel 1 extends from the motor barrel 1 to the gear box 2. The gear box 2 is provided with an output shaft 4 connected to the motor shaft 3. The output shaft 4 extends from the end of the gear box 2 away from the motor barrel 1 to power the lifting door.

[0027] Here, first, a sealing ring 23 is set at the connection between the gear box 2 and the motor barrel 1 to perform an annular seal on the connection between the gear box 2 and the motor barrel 1; then a first skeleton oil seal 21 is set at the connection between the gear box 2 and the motor shaft 3, and a second skeleton oil seal 22 is set at the connection between the gear box 2 and the output shaft 4, so that the gear box 2 is in a sealed state, and finally the gear box 2 is filled with lubricating oil, and the transmission parts in the entire gear box 2 are effectively oil-sealed for continuous and stable lubrication, which effectively extends the service life of the external machine and improves safety and stability.

[0028] Since the output shaft 4 and the motor shaft 3 are both rotating parts, the skeleton oil seal that seals the output shaft 4 and the motor shaft 3 is a representative seal that is widely used in rotating shaft parts. The skeleton oil seal is a type of seal and is one of the commonly used sealing ring series. It is mainly used for sealing oil in mechanical components. The skeleton oil seal is a component used to prevent oil from leaking from the gaps in the machine. The skeleton oil seal is composed of three parts, namely, an oil seal rubber elastomer, a reinforcing skeleton, and a self-tightening spring. The rubber elastomer is composed of a bottom, a waist, a cutting edge, and a sealing lip. Usually, the actual size of the inner diameter of the skeleton oil seal will be smaller than the shaft diameter, and it has a certain "interference amount" to make the skeleton oil seal have sealing performance.

[0029] The present invention seals the gear box by using a skeleton oil seal and a sealing ring, and then fills the gear box with lubricating oil to directly form an oil seal structure, so that the lubrication effect between the motor shaft and the output shaft is guaranteed, the service life is effectively extended, and the safety and stability are better.

[0030] Embodiment 2, still as Figures 1 to 3 The figure is only one of the embodiments of the present invention. On the basis of the first embodiment, in an oil-immersed external machine of the present invention, the output shaft 4 is coaxially provided with an output gear 41, the motor shaft 3 is connected to the output gear 41, and the motor shaft 3 and the output gear 41 are both provided with helical gear stripes; the outer diameter of the output gear 41 is larger than the outer diameter of the motor shaft 3.

[0031] The motor shaft and the output shaft are driven by helical gears, which makes the deceleration effect stable, has a high overload capacity, small vibration and low noise. It can be used stably on various doors with high speed and large lifting mass.

[0032] In order to further perform helical gear transmission deceleration, a deceleration transition piece 5 is arranged between the output shaft 4 and the motor shaft 3. The deceleration transition piece 5 includes a transition shaft 51 and a transition gear 52 coaxially arranged with the transition shaft 51. The transition gear 52 is meshed and connected with the motor shaft 3, and the transition shaft 51 is meshed and connected with the output gear 41. The transition shaft 51 and the transition gear 52 are both provided with helical gear stripes.

[0033] Here, the outer diameter of the transition gear 52 is larger than the outer diameter of the motor shaft 3 , and the outer diameter of the output gear 41 is larger than the outer diameter of the transition shaft 51 .

[0034] In other words, two helical gear transmission reductions are performed to effectively and stably reduce the high-speed rotation of the motor. At the same time, the helical gear reduction has a greater transmission torque, and the lifting stability of the door is higher.

[0035] Moreover, the oil seal structure can provide stable and continuous lubrication for the helical gear structure, which provides higher safety.

[0036] In the present invention, a first limit bearing 53 is provided at one end of the transition shaft 51 away from the transition gear 52, a second limit bearing 54 is provided at one end of the transition gear 52 away from the transition shaft 51, a first limit cylinder 24 for facilitating the installation of the first limit bearing 53 is provided on the gear box 2, and a second limit cylinder for facilitating the installation of the second limit bearing 54 is provided on the motor cylinder 1.

[0037] The motor barrel 1 is provided with a motor barrel bottom surface at one end close to the gear box 2, and the gear box 2 is provided with a gear box bottom surface at one end away from the motor barrel 1. The gear box 2 is provided with an opening at one end close to the motor barrel 1, and the first limiting barrel 24 is provided at one side of the gear box bottom surface close to the motor barrel 1, and the second limiting barrel is provided at one side of the motor barrel bottom plate close to the gear box; The motor barrel bottom plate is connected to the gear box 2, and the sealing ring 23 is arranged at the connection between the motor barrel bottom plate and the gear box 2 for sealing.

[0038] Embodiment three, still as Figures 1 to 3 The figure shown is only one embodiment of the present invention. Based on any of the above embodiments, in an oil-immersed external machine of the present invention, the gear box 2 is connected to the motor barrel 1 through connecting bolts, and a sealing gasket 25 is provided at the connection between the gear box 2 and the connecting bolts to prevent the gear box 2 from leaking oil at the connecting bolts.

[0039] The number of the connecting bolts is at least one, and the gear box 2 is provided with a bolt barrel 26 for facilitating the installation of the connecting bolts. In fact, the inside of the bolt barrel 26 is connected to the outside of the gear box 2, and the outside of the bolt barrel 26 is the inner side of the oil seal of the gear box 2, that is, most of the connecting bolts are actually on the outside of the gear box 2. After passing through the bolt barrel 26, the connecting bolts are inserted into the threaded groove on the bottom surface of the motor barrel, and the sealing gasket 25 is set at the connection between the bolt barrel 26 and the threaded groove.

[0040] In the present invention, the gear box 2 is provided with a shaft cylinder 27 for facilitating the installation of the output shaft 4; the bolt cylinder 26 is connected to the shaft cylinder 27 via a reinforcing rib 28, and the bolt cylinder 26 is also connected to the first limiting cylinder 24 via a reinforcing rib 28, so that the structural strength of the entire gear box 2 is higher and more stable.

[0041] As one of the embodiments of the present invention, a functional gear 42 is arranged on the outer side of the output shaft 4, and the functional gear 42 is meshedly connected with an absolute encoder 43; the functional gear 42 is arranged on the side of the second skeleton oil seal 22 away from the motor shaft 3, and the absolute encoder 43 limits the stroke of the output shaft 4, that is, the upper and lower limits of the lifting door.

[0042] Of course, the gear box 2 is provided with an encoder compartment 29 for accommodating the absolute value encoder 43 . The encoder compartment 29 is located outside the oil seal area of ​​the gear box 2 . The encoder compartment 29 effectively protects the absolute value encoder 43 .

[0043] Finally, the gear box 2 is an integrally formed part. In fact, the gear box 2 is an integrally formed carbon steel alloy part with high shockproof and bending resistance and good stability.

[0044] The present invention discloses an oil-immersed external machine, which seals a gear box by using a skeleton oil seal and a sealing ring, and then fills the gear box with lubricating oil to directly form an oil seal structure, thereby ensuring the lubrication effect between the motor shaft and the output shaft, effectively extending the service life, and improving safety and stability.

[0045] The present invention is not limited to the above specific implementations, and the present invention may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made to the above implementations based on the technical essence of the present invention shall be included in the protection scope of the present invention.

Claims

1. An oil-immersed external machine, characterized in that: The invention comprises a motor barrel (1) and a gear box (2); the motor barrel (1) is provided with a motor shaft (3) extending into the gear box (2); the motor shaft (3) is connected to an output shaft (4) extending outside the gear box (2); a sealing ring (23) is provided at the connection between the gear box (2) and the motor barrel (1); a first skeleton oil seal (21) is provided at the connection between the gear box (2) and the motor shaft (3); a second skeleton oil seal (22) is provided at the connection between the gear box (2) and the output shaft (4); and the gear box (2) is filled with lubricating oil.

2. The oil-immersed external machine according to claim 1, characterized in that: The output shaft (4) is coaxially provided with an output gear (41), the motor shaft (3) is connected to the output gear (41), and both the motor shaft (3) and the output gear (41) are provided with helical gear stripes.

3. The oil-immersed external machine according to claim 2, characterized in that: A speed reduction transition piece (5) is provided between the output shaft (4) and the motor shaft (3), the speed reduction transition piece (5) comprising a transition shaft (51) and a transition gear (52) coaxially arranged with the transition shaft (51), the transition gear (52) being meshingly connected with the motor shaft (3), and the transition shaft (51) being meshingly connected with the output gear (41); and the transition shaft (51) and the transition gear (52) are both provided with helical gear stripes.

4. The oil-immersed external machine according to claim 3, characterized in that: A first limit bearing (53) is arranged at one end of the transition shaft (51) away from the transition gear (52), and a second limit bearing (54) is arranged at one end of the transition gear (52) away from the transition shaft (51). A first limit cylinder (24) for facilitating the installation of the first limit bearing (53) is arranged on the gear box (2), and a second limit cylinder for facilitating the installation of the second limit bearing (54) is arranged on the motor cylinder (1).

5. The oil-immersed external machine according to claim 1, characterized in that: The gear box (2) is connected to the motor barrel (1) via connecting bolts, and a sealing gasket (25) is provided at the connection between the gear box (2) and the connecting bolts.

6. The oil-immersed external machine according to claim 5, characterized in that: The number of the connecting bolt is at least one, and the gear box (2) is provided with a bolt barrel (26) for facilitating the installation of the connecting bolt.

7. The oil-immersed external machine according to claim 6, characterized in that: The gear box (2) is provided with a shaft cylinder (27) for facilitating the installation of the output shaft (4); the bolt cylinder (26) is connected to the shaft cylinder (27) via a reinforcing rib (28).

8. The oil-immersed external machine according to claim 1, characterized in that: A functional gear (42) is arranged on the outside of the output shaft (4), and the functional gear (42) is meshingly connected with an absolute value encoder (43); the functional gear (42) is arranged on a side of the second skeleton oil seal (22) away from the motor shaft (3).

9. The oil-immersed external machine according to claim 8, characterized in that: The gear box (2) is provided with an encoder compartment (29) for accommodating the absolute value encoder (43).

10. The oil-immersed external machine according to claim 1, characterized in that: The gear box (2) is an integrally formed part.

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