CN220891043U - Gearbox overflow arrangement and lathe - Google Patents
Gearbox overflow arrangement and lathe Download PDFInfo
- Publication number
- CN220891043U CN220891043U CN202322856047.5U CN202322856047U CN220891043U CN 220891043 U CN220891043 U CN 220891043U CN 202322856047 U CN202322856047 U CN 202322856047U CN 220891043 U CN220891043 U CN 220891043U
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- CN
- China
- Prior art keywords
- gland
- oil
- gear
- output shaft
- box
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Links
- 210000004907 gland Anatomy 0.000 claims abstract description 36
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 24
- 239000010959 steel Substances 0.000 claims abstract description 24
- 230000005540 biological transmission Effects 0.000 claims description 19
- 238000007789 sealing Methods 0.000 claims description 12
- 238000005452 bending Methods 0.000 claims description 7
- 230000008878 coupling Effects 0.000 claims description 6
- 238000010168 coupling process Methods 0.000 claims description 6
- 238000005859 coupling reaction Methods 0.000 claims description 6
- 239000004519 grease Substances 0.000 abstract description 12
- 230000001050 lubricating effect Effects 0.000 abstract description 6
- 238000005086 pumping Methods 0.000 abstract description 4
- 239000003921 oil Substances 0.000 description 41
- 239000003595 mist Substances 0.000 description 9
- 239000010687 lubricating oil Substances 0.000 description 8
- 238000005461 lubrication Methods 0.000 description 3
- 230000007547 defect Effects 0.000 description 2
- 239000000314 lubricant Substances 0.000 description 2
- 238000004891 communication Methods 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
Landscapes
- General Details Of Gearings (AREA)
- Sealing Using Fluids, Sealing Without Contact, And Removal Of Oil (AREA)
Abstract
The utility model discloses a gearbox overflow device, which belongs to the field of machine tools and comprises a box body, an output shaft, a bearing, a gear, a gland, a pipe joint and a steel pipe, wherein the output shaft is rotatably arranged in the box body and extends out, the bearing is sleeved outside the output shaft and is positioned in the box body, the gland is arranged above the box body, the gear is arranged outside the output shaft and is positioned above the gland, labyrinth seal is formed between the gear and the gland, an oil inlet is arranged at the top of the box body, an oil outlet is arranged at the bottom of the box body, the oil inlet is communicated with the oil outlet, the pipe joint is arranged at the oil outlet, the steel pipe is arranged on the pipe joint, the distance between the tail end of the gear and the bottom of the box body is L1, and the distance between the tail end of the steel pipe and the bottom of the box body is L2< L1. According to the utility model, when the oil pumping speed is lower than the oil inlet speed due to debugging or faults and the like, oil can accumulate at the bottom of the box body and flow out of the steel pipe first, so that the oil cannot flow into the bearing through the gland, and the lubricating grease of the bearing cannot be damaged to cause the burning of the bearing.
Description
Technical Field
The utility model relates to the field of machine tools, in particular to a gearbox overflow device and a machine tool comprising the gearbox overflow device.
Background
When the bearing position of the high-speed gearbox output shaft used by the vertical machine tool is sealed in a contact mode, high heat is generated due to high rotating speed, the precision of the machine tool is affected, meanwhile, the service life of a sealing ring is greatly reduced, oil can leak after long-time use, therefore, the gearbox output shaft with high rotating speed is generally sealed in a non-contact type, the bearings are lubricated by grease, the rest bearings are lubricated by circulating thin oil, the thin oil overflows the labyrinth to enter the bearings due to debugging or faults and the like, lubricating grease of the bearings is washed out, the bearings are burnt out, and the service life of the gearbox is affected.
Disclosure of utility model
In order to overcome the defects of the prior art, one of the purposes of the utility model is to provide a gearbox overflow device which can prevent a bearing from burning out so as to prolong the service life of the gearbox.
In order to overcome the defects of the prior art, the second aim of the utility model is to provide a machine tool which can prevent the bearing from burning out so as to prolong the service life of the gearbox.
One of the purposes of the utility model is realized by adopting the following technical scheme:
The utility model provides a gearbox overflow arrangement, includes box, output shaft, bearing, gear, gland, still includes coupling, steel pipe, the output shaft is rotated and is installed the inside and extension of box goes out, the bearing housing is established the output shaft is outside and be located the box is inside, the gland is installed the box top, the gear is installed the output shaft is outside and be located the gland top, the gear with form labyrinth seal between the gland, the box top is equipped with oil inlet, bottom is equipped with the oil-out, the oil inlet with the oil-out intercommunication, the coupling sets up oil-out department, the steel pipe is installed on the coupling, the gear terminal with distance between the box bottom is L1, the steel pipe terminal with distance between the box bottom is L2, then L2< L1.
Further, the steel pipe comprises a straight part and a bending part, and the bending part extends upwards or downwards from the tail end of the straight part.
Further, the bending part is arc-shaped.
Further, one end of the gland, which faces the box body, is provided with a first through hole, the box body is provided with a second through hole, and the first through hole is communicated with the second through hole.
Further, the cross section of the second through hole is L-shaped.
Further, the gearbox overflow device further comprises a plurality of sealing rings, part of the sealing rings are arranged between the output shaft and the gear, and part of the sealing rings are arranged between the box body and the gland.
Further, the sealing ring is an O-shaped sealing ring.
Further, the gland is equipped with first bellying towards on the lateral wall of gear, the gear is equipped with the second bellying towards on the lateral wall of gland, first bellying with the second bellying is crisscross to be arranged each other, first bellying with form a plurality of clearances between the surface of second bellying, a plurality of the clearance is linked together and is formed labyrinth seal.
Further, the first protruding portion and the second protruding portion are arranged at intervals in a direction perpendicular to the axial direction of the output shaft.
The second purpose of the utility model is realized by adopting the following technical scheme:
A machine tool comprising any one of the above gearbox overflow arrangements.
Compared with the prior art, the gearbox overflow device comprises a box body, an output shaft, a bearing, a gear, a gland, a pipe joint and a steel pipe, wherein the output shaft is rotatably arranged in the box body and extends out, the bearing is sleeved outside the output shaft and is positioned in the box body, the gland is arranged above the box body, the gear is arranged outside the output shaft and is positioned above the gland, labyrinth seal is formed between the gear and the gland, an oil inlet is arranged at the top of the box body, an oil outlet is arranged at the bottom of the box body, the oil inlet is communicated with the oil outlet, the pipe joint is arranged at the oil outlet, the steel pipe is arranged on the pipe joint, the distance between the tail end of the gear and the bottom of the box body is L1, and the distance between the tail end of the steel pipe and the bottom of the box body is L2, so that L2 is less than L1. According to the utility model, when the oil pumping speed is lower than the oil inlet speed due to debugging or faults and the like, oil can accumulate at the bottom of the box body and firstly flows out of the steel pipe, so that the oil cannot flow into the bearing through the gland, the bearing is not burnt out due to the lubricating grease of the bearing, and the service life of the gearbox is ensured; in addition, even if the lubricant in the gearbox is thrown into mist because the output shaft and the gears in the gearbox rotate at high speed, the oil mist can flow out of the gearbox body along the first through hole and the second through hole, and cannot accumulate to the bearing, so that the initial state of bearing grease is damaged. The utility model has stable use and high reliability.
Drawings
FIG. 1 is a partial cross-sectional view of a transmission overflow device of the present utility model;
FIG. 2 is an enlarged view of the transmission overflow arrangement of FIG. 1 at A;
Fig. 3 is a side view of the transmission overflow arrangement of the present utility model.
In the figure: 10. a case; 11. an oil inlet; 12. an oil outlet; 13. a second through hole; 20. an output shaft; 30. a bearing; 40. a gland; 41. a first boss; 42. a first through hole; 50. a gear; 51. a second protruding portion; 60. a pipe joint; 70. a steel pipe; 71. a straight portion; 72. a bending part; 80. and (3) sealing rings.
Detailed Description
The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.
It will be understood that when an element is referred to as being "fixed to" another element, it can be directly on the other element or be present as another intermediate element through which the element is fixed. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. When an element is referred to as being "disposed on" another element, it can be directly on the other element or intervening elements may also be present. The terms "vertical," "horizontal," "left," "right," and the like are used herein for illustrative purposes only.
Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this utility model belongs. The terminology used herein in the description of the utility model is for the purpose of describing particular embodiments only and is not intended to be limiting of the utility model. The term "and/or" as used herein includes any and all combinations of one or more of the associated listed items.
Fig. 1-3 show a transmission overflow device according to the present utility model, comprising a housing 10, an output shaft 20, a bearing 30, a gland 40, a gear 50, a pipe joint 60, a steel pipe 70 and a seal ring 80.
In this embodiment:
The top of the box body 10 is provided with an oil inlet 11, the bottom is provided with an oil outlet 12, and the oil inlet 11 is communicated with the oil outlet 12. Lubricating oil enters the box 10 from the oil inlet 11, reaches the lubrication points of gears and bearings (except for the bearings 30), and finally, the lubricating oil can accumulate at the bottom of the cavity inside the box 10. The oil outlet 12 is arranged at the bottommost part of the box body 10, and can pump all the lubricating oil at the bottom. The oil pumping speed is higher than the oil inlet speed during normal use; the case 10 is further provided with a second through hole 13 for discharging oil mist generated when the transmission is rotated at a high speed to the outside of the case 10 in cooperation with the pressing cover 40. In this embodiment, the second through hole 13 has an L-shaped cross-sectional shape.
The output shaft 20 is rotatably mounted inside the case 10 and extends.
The bearing 30 is sleeved outside the output shaft 20 and is positioned inside the box 10 to support the bottom of the output shaft 20, so that the bearing 30 is not lubricated by thin oil in order to avoid heating and leakage during high-speed operation, the bearing 30 is lubricated by grease, the lubricating oil inside the box 10 is required to be separated from the bearing 30 during grease lubrication, and the thin oil is prevented from flowing into the bearing 30 to wash away lubricating grease inside the bearing 30, so that the bearing 30 is burnt out.
The gland 40 is installed above the box 10, a first protruding portion 41 is arranged on the side wall of the gland 40 facing the gear 50, a first through hole 42 is arranged at one end of the gland 40 facing the box 10, and the first through hole 42 is communicated with the second through hole 13. By the above arrangement, even if oil mist is accumulated, the oil mist can flow out along the first through hole 42 and the second through hole 13, and thus the oil mist generated during the high-speed rotation of the transmission can be prevented from accumulating in the bearing 30, and the initial state of the grease of the bearing 30 can be prevented from being damaged.
The gear 50 is mounted outside the output shaft 20 and above the gland 40, the side wall of the gear 50 facing the gland 40 is provided with a second protruding portion 51, the first protruding portion 41 and the second protruding portion 51 are arranged in a staggered mode, a plurality of gaps are formed between the surfaces of the first protruding portion 41 and the second protruding portion 51, and the gaps are communicated and form labyrinth seal. In the present embodiment, the first boss 41 and the second boss 51 are arranged at intervals in a direction perpendicular to the axial direction of the output shaft 20.
A pipe joint 60 is provided at the oil outlet 12 in communication with the cavity inside the tank 10.
The steel pipe 70 is installed on the pipe joint 60, the distance between the end of the gear 50 and the bottom of the case 10 is L1, and the distance between the end of the steel pipe 70 and the bottom of the case 10 is L2, L2< L1. When the oil pumping speed is lower than the oil inlet speed due to debugging or failure, oil can accumulate at the bottom of the box 10, and the oil can flow out of the steel pipe 70 first by arranging the pipe joint 60 and the steel pipe 70, so that the oil cannot flow into the bearing 30 through the gland 40, and the lubricating grease of the bearing 30 cannot be damaged. In this embodiment, the steel pipe 70 includes a straight portion 71 and a bent portion 72, and the bent portion 72 extends upward or downward from the end of the straight portion 71, so as to facilitate the discharge of oil mist generated when the transmission is rotated at a high speed out of the case 10. Preferably, the bent portion 72 has an arc shape.
A part of the seal ring 80 is provided between the output shaft 20 and the gear 50, and a part of the seal ring 80 is provided between the case 10 and the gland 40. In this embodiment, the seal ring 80 is an O-ring seal.
When the oil-sucking device is used, lubricating oil enters the box body 10 from the oil inlet 11 and reaches the lubrication points (except for the bearings 30) of the gears and the bearings, finally the lubricating oil can be accumulated at the bottom of the cavity in the box body 10, the oil outlet 12 can suck the lubricating oil at the bottom completely, the oil-sucking speed is higher than the oil-sucking speed in normal use, the oil can accumulate at the bottom of the box body 10 when the oil-sucking speed is lower than the oil-sucking speed due to debugging or failure and other reasons, and the lubricating oil flows out of the steel pipe 70 first and does not overflow the gland 40 to enter the bearings 30, so that the lubricating grease of the bearings 30 is not damaged to cause the burning of the bearings 30 and the like, and the service life of the gearbox is ensured; in addition, even if the lubricant in the transmission is thrown into mist by the high-speed rotation of the output shaft 20 and the gear 50 in the transmission, the mist flows out of the case 10 through the first through hole 42 and the second through hole 13, and does not accumulate in the bearing 30, and the initial state of the grease in the bearing 30 is destroyed. The application has stable use and high reliability.
The application also relates to a machine tool comprising the gearbox overflow device.
The foregoing examples illustrate only a few embodiments of the utility model, which are described in detail and are not to be construed as limiting the scope of the utility model. It should be noted that, for those skilled in the art, it is possible to make several modifications and improvements without departing from the concept of the present utility model, which are equivalent to the above embodiments according to the essential technology of the present utility model, and these are all included in the protection scope of the present utility model.
Claims (10)
1. The utility model provides a gearbox overflow arrangement, includes box, output shaft, bearing, gear, gland, its characterized in that: still include coupling, steel pipe, the output shaft is rotated and is installed inside and the extension of box is gone out, the bearing housing is established the output shaft is outside and be located inside the box, the gland is installed the box top, the gear is installed outside the output shaft and be located the gland top, the gear with form labyrinth seal between the gland, the box top is equipped with oil inlet, bottom and is equipped with the oil-out, the oil inlet with the oil-out intercommunication, the coupling sets up oil-out department, the steel pipe is installed on the coupling, the gear terminal with distance between the box bottom is L1, the steel pipe terminal with distance between the box bottom is L2, then L2< L1.
2. The transmission overflow device of claim 1, wherein: the steel pipe comprises a straight part and a bending part, wherein the bending part extends upwards or downwards from the tail end of the straight part.
3. The transmission overflow device of claim 2, wherein: the bending part is arc-shaped.
4. The transmission overflow device of claim 1, wherein: the gland orientation the one end of box is equipped with first through-hole, the box is equipped with the second through-hole, first through-hole with the second through-hole intercommunication.
5. The transmission overflow device of claim 4, wherein: the cross section of the second through hole is L-shaped.
6. The transmission overflow device of claim 1, wherein: the gearbox overflow device further comprises a plurality of sealing rings, part of the sealing rings are arranged between the output shaft and the gear, and part of the sealing rings are arranged between the box body and the gland.
7. The transmission overflow device of claim 6, wherein: the sealing ring is an O-shaped sealing ring.
8. The transmission overflow device of claim 1, wherein: the gland is equipped with first bellying towards on the lateral wall of gear, the gear is equipped with the second bellying towards on the lateral wall of gland, first bellying with the second bellying is crisscross to be arranged each other, first bellying with form a plurality of clearances between the surface of second bellying, a plurality of the clearance is linked together and is formed labyrinth seal.
9. The transmission overflow device of claim 8, wherein: the first protruding portion and the second protruding portion are arranged at intervals along a direction perpendicular to the axial direction of the output shaft.
10. A machine tool, characterized in that: transmission overflow arrangement comprising a transmission according to any of claims 1-9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322856047.5U CN220891043U (en) | 2023-10-24 | 2023-10-24 | Gearbox overflow arrangement and lathe |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322856047.5U CN220891043U (en) | 2023-10-24 | 2023-10-24 | Gearbox overflow arrangement and lathe |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220891043U true CN220891043U (en) | 2024-05-03 |
Family
ID=90837895
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202322856047.5U Active CN220891043U (en) | 2023-10-24 | 2023-10-24 | Gearbox overflow arrangement and lathe |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220891043U (en) |
-
2023
- 2023-10-24 CN CN202322856047.5U patent/CN220891043U/en active Active
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| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |