CN214999314U - Rear power takeoff subassembly - Google Patents
Rear power takeoff subassembly Download PDFInfo
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- CN214999314U CN214999314U CN202121182366.7U CN202121182366U CN214999314U CN 214999314 U CN214999314 U CN 214999314U CN 202121182366 U CN202121182366 U CN 202121182366U CN 214999314 U CN214999314 U CN 214999314U
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- oil
- power takeoff
- bearing
- rear power
- gear shaft
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Abstract
The utility model relates to a power takeoff technical field, concretely relates to back power takeoff subassembly. Rear power takeoff subassembly, including the casing, be provided with the back power takeoff gear shaft in the casing, the gear shaft passes through the bearing and is connected with the casing rotation, back power takeoff gear shaft one end is provided with the gear portion that matches with external drive equipment, the other end is provided with power take off portion, be provided with gapped bearing between two on the back power takeoff gear shaft in the casing, enclose into first oil duct between shells inner wall and two bearings, the bearing that is close to power take off portion is provided with the clearance with shells inner wall, forms the second oil duct. And a channel communicated with the first oil duct and the second oil duct is arranged on the inner wall of the shell. Back power takeoff subassembly, adopt the design of two oil ducts in the aspect of the structure, add the oil duct in addition in the cavity, cancel casing right-hand member face and bore the oilhole, need not rivet stifled hole, reduce cost, energy saving (electricity), the reliability of using is improved, eliminates the oil leak risk.
Description
Technical Field
The utility model relates to a power takeoff technical field, concretely relates to back power takeoff subassembly.
Background
The power takeoff is one or several groups of speed-changing gears, also called power output device, and is generally formed from gear box, clutch and controller, and is connected with low-gear of gear box or output shaft of auxiliary box to output power to external working device, such as lifting pump, etc.
At present, the power takeoff on the market is as shown in fig. 3, bore the oilhole at the right-hand member face of casing to carry out the shutoff hole through the rivet, processing has certain degree of difficulty, and production efficiency is low, appears the oil leak phenomenon after using for a long time, and in addition, the inside space that is sealed relatively of power takeoff, lubricating oil is not smooth in the circulation in inside, and it is relatively poor to have also caused the lubricated effect, and the inside bearing assembly of power takeoff easily wears out, has shortened life, and it is inside also to make the dust get into the power takeoff easily to be based on sealed effect is not good.
SUMMERY OF THE UTILITY MODEL
In order to overcome the not enough of prior art, the utility model provides a power takeoff subassembly, this power takeoff subassembly have changed the oil duct design, need not to bore the oilhole at casing right-hand member face, and processing is simple, and the oil leak phenomenon has also been avoided taking place to no rivet hole sealing, and the lubricating oil circulation is smooth and easy, dustproof, improve power takeoff life.
In order to solve the technical problem, the utility model provides a following technical scheme:
the rear power takeoff sub-assembly comprises a shell, a rear power takeoff gear shaft is arranged in the shell and is rotationally connected with the shell through a bearing, one end of the rear power takeoff gear shaft is provided with a gear part matched with external driving equipment, the other end of the rear power takeoff gear shaft is provided with a power output part,
two bearings with a gap between are arranged on the rear power take-off gear shaft in the shell, a first oil duct is enclosed between the inner wall of the shell and the two bearings,
a gap is arranged between the bearing close to the power output part and the inner wall of the shell to form a second oil duct,
the shell is provided with an oil inlet, an oil outlet and an air hole of the first oil duct,
and a channel for communicating the first oil duct with the second oil duct is arranged on the inner wall of the bottom shell of the bearing close to the power output part.
Preferably, a circlip for hole is provided between the outer ring of the bearing and the housing.
Preferably, a dustproof cap is arranged between the power output part and the shell, and the dustproof cap is in interference fit with the power output part.
Preferably, the oil inlet is arranged at the top of the housing between the two bearings, the oil outlet is arranged on the bottom housing of the bearing close to the gear part, and the air hole is arranged on the top housing of the bearing close to the gear part.
Preferably, a bushing is arranged between the bearing close to the power output part and the power output part, and an inner bag framework oil seal is arranged in a gap between the bushing and the shell.
Preferably, the rubber type of the oil sealing material of the inner wrapping framework is FKM, the framework material is DC01, the spring material is 70-B, a double-lip design is adopted, one lip is used for sealing oil, and the other lip is used for dust prevention.
Preferably, a spacer bush for fixing the bearing inner ring is arranged between the two bearings arranged on the gear shaft.
Compared with the prior art, the utility model discloses following beneficial effect has:
back power takeoff subassembly, adopt the design of two oil ducts in the aspect of the structure, add the oil duct in addition in the cavity, cancel casing right-hand member face and bore the oilhole, need not rivet stifled hole, reduce cost, energy saving (electricity), the reliability of using is improved, eliminates the oil leak risk.
Oil inlet, oil-out and venthole design add rationally, and processing is simpler, has improved production efficiency, and the venthole design also makes lubricating oil circulate more smoothly in the inside of power takeoff, avoids the bearing to appear the serious wearing and tearing of short time because of lubricated not good.
Be provided with the bush on the casing exit of power takeoff gear shaft, scribble sealed glue between bush and the back power takeoff gear shaft, the bush makes the power takeoff gear shaft rotate more smoothly, and the bush is changed more easily.
The output flange with be provided with dustproof cap between the casing, avoided the dust to get into inside the power takeoff easily.
Drawings
Fig. 1 is a schematic structural diagram of a power takeoff according to the present invention;
FIG. 2 is a schematic view of a bushing configuration;
fig. 3 is a schematic structural diagram of a conventional power takeoff casing on the market.
Detailed Description
In order to make the technical means, creation features, achievement purposes and functions of the present invention easy to understand, the present invention will be further described with reference to the following embodiments.
As shown in fig. 1, the rear power takeoff sub-assembly of the present invention comprises a casing 1, a rear power takeoff gear shaft 2 is disposed in the casing 1, the rear power takeoff gear shaft 2 is rotatably connected to the casing 1 through a bearing 23, one end of the rear power takeoff gear shaft 2 is provided with a gear portion 21 matching with an external driving device, the other end is provided with a power take-off portion 22, in this embodiment, the power take-off portion 22 is an output flange,
two bearings 23 with gaps between are arranged on the rear power take-off gear shaft 2 in the shell 1, a first oil channel 3 is enclosed between the inner wall of the shell 1 and the two bearings, a gap is arranged between the bearing 23 close to the power output part 22 and the inner wall of the shell 1 to form a second oil channel 4, an oil inlet 31, an oil outlet 32 and an air hole 33 communicated with the first oil channel 3 are arranged on the shell 1, a channel 11 for communicating the first oil channel 3 with the second oil channel 4 is arranged on the inner wall of the bottom shell 1 of the bearing 23 close to the power output part 22, and a spacer 24 for fixing an inner ring of the bearing 23 is arranged between the two bearings 23 arranged on the gear shaft 2. An oil inlet 31 is provided at the top of the housing 1 between the two bearings, an oil outlet 32 is provided at the bottom of the housing 1 near the bearing 23 of the gear portion 21, and an air hole is provided at the top of the housing 1 near the bearing 23 of the gear portion 21. Back power takeoff subassembly, adopt the design of two oil ducts in the aspect of the structure, add the oil duct in addition in the cavity, the cancellation bores the oilhole as the shown casing right-hand member face of fig. 3, need not rivet stifled hole, reduce cost, energy saving (electricity), the reliability of improving the use eliminates the oil leak risk.
Set up circlip 5 for the hole between bearing 23's outer lane and casing 1, circlip 5 for the hole can fix bearing 23 better, is provided with dustproof cap 6 between power take off portion 22 and the casing 1, and dustproof cap 6 and power take off portion 22 interference fit have avoided the dust to get into inside the power takeoff easily.
A bush 25 is provided between the bearing 23 close to the power output portion 22 and the power output portion 22, and an inner frame oil seal 7 is provided in a gap between the bush 25 and the housing 1. As shown in fig. 2, FKM is selected as the rubber type of the oil seal material of the inner bag frame, DC01 is used as the frame material, 70-B is used as the spring material, a double-lip design is used, one lip is used as the sealing oil design, the other lip is used as the dust-proof design, and a sealing glue is coated between the bush 25 and the rear power take-off gear shaft 2.
The working principle is as follows:
after the rear power takeoff sub-assembly is assembled into an external power driving device, for example, the power device is an engine, a gear part 21 is matched with a power output gear of the engine, power is output to a power output part 22 through a rear power takeoff gear shaft 2, two bearings 23 arranged on the gear shaft 2 also play a good positioning role, lubricating oil enters a power takeoff from an oil inlet 31 and enters a first oil duct 3, meanwhile, a part of lubricating oil enters a second oil duct 4, the lubricating oil in the second oil duct 4 is converged into the first oil duct 3 through a channel 11 and finally is discharged from an oil outlet 32, the oil ducts are communicated with oil ducts of the engine, the lubricating oil of the engine is shared, the air pressure inside and outside the rear power takeoff sub-assembly is balanced by the design of an air hole 33, the phenomenon that the lubricating oil cannot enter the rear power takeoff sub-assembly due to the increase of the internal air pressure is avoided, and the lubricating oil flows more smoothly, the lubricating effect is better.
The above-mentioned embodiments are merely preferred embodiments of the present invention, not all of which can not be taken as limitations to the scope of the present invention, and the present invention can also have various changes and modifications without departing from the spirit and scope of the present invention, and these changes and modifications all fall within the scope of the claimed invention.
Claims (7)
1. A rear power takeoff sub-assembly comprises a shell (1), a rear power takeoff gear shaft (2) is arranged in the shell (1), the rear power takeoff gear shaft (2) is rotatably connected with the shell (1) through a bearing, one end of the rear power takeoff gear shaft (2) is provided with a gear part (21) matched with external driving equipment, the other end of the rear power takeoff gear shaft is provided with a power output part (22), and the rear power takeoff sub-assembly is characterized in that,
two bearings (23) with gaps between are arranged on the rear power take-off gear shaft (2) in the shell (1), a first oil duct (3) is enclosed between the inner wall of the shell (1) and the two bearings,
a gap is arranged between the bearing (23) close to the power output part (22) and the inner wall of the shell (1) to form a second oil duct (4),
an oil inlet (31), an oil outlet (32) and an air hole (33) of the first oil channel (3) are arranged on the shell (1),
and a channel (11) for communicating the first oil channel (3) and the second oil channel (4) is arranged on the inner wall of the bottom shell (1) of the bearing (23) close to the power output part (22).
2. Rear power take-off sub-assembly according to claim 1, characterised in that a circlip (5) for the bore is provided between the outer ring of the bearing (23) and the housing (1).
3. Rear power takeoff subassembly according to claim 1, characterized in that a dust cap (6) is arranged between the power take-off (22) and the housing (1), the dust cap (6) being in interference fit with the power take-off (22).
4. Rear power take-off sub-assembly according to claim 1, characterised in that the oil inlet (31) is arranged at the top of the housing (1) between the two bearings, the oil outlet (32) is arranged on the bottom housing (1) near the bearing (23) of the gear wheel section (21), and the air hole is arranged on the top housing (1) near the bearing (23) of the gear wheel section (21).
5. Rear power takeoff sub-assembly according to claim 1, characterized in that a bushing (25) is arranged between the bearing (23) close to the power take-off (22) and the power take-off (22), and an inner frame oil seal (7) is arranged in the gap between the bushing (25) and the casing (1).
6. The rear power takeoff sub-assembly housing as claimed in claim 5, wherein the inner casing is made of an oil-sealed material of FKM rubber type, the casing is made of DC01, the spring material is 70-B, and the two-lip design is adopted, wherein one lip is used as a sealing oil design and the other lip is used as a dustproof design.
7. Rear power take-off subassembly according to claim 1, characterized in that a spacer (24) is arranged between the two bearings (23) arranged on the gear shaft (2) for fixing the inner ring of the bearing (23).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121182366.7U CN214999314U (en) | 2021-05-31 | 2021-05-31 | Rear power takeoff subassembly |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121182366.7U CN214999314U (en) | 2021-05-31 | 2021-05-31 | Rear power takeoff subassembly |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN214999314U true CN214999314U (en) | 2021-12-03 |
Family
ID=79088232
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202121182366.7U Active CN214999314U (en) | 2021-05-31 | 2021-05-31 | Rear power takeoff subassembly |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN214999314U (en) |
-
2021
- 2021-05-31 CN CN202121182366.7U patent/CN214999314U/en active Active
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