CN220956687U - Transmission power takeoff combination - Google Patents
Transmission power takeoff combination Download PDFInfo
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- CN220956687U CN220956687U CN202322679937.3U CN202322679937U CN220956687U CN 220956687 U CN220956687 U CN 220956687U CN 202322679937 U CN202322679937 U CN 202322679937U CN 220956687 U CN220956687 U CN 220956687U
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- power takeoff
- installation area
- power take
- power
- takeoff
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- 230000005540 biological transmission Effects 0.000 title claims abstract description 35
- 238000009434 installation Methods 0.000 claims abstract description 39
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- 238000007906 compression Methods 0.000 claims description 8
- 238000007789 sealing Methods 0.000 claims description 8
- 230000000149 penetrating effect Effects 0.000 claims description 5
- 238000004519 manufacturing process Methods 0.000 abstract description 6
- 239000003921 oil Substances 0.000 description 48
- 230000007246 mechanism Effects 0.000 description 7
- 239000012208 gear oil Substances 0.000 description 6
- 239000010687 lubricating oil Substances 0.000 description 5
- 230000009471 action Effects 0.000 description 4
- 230000006872 improvement Effects 0.000 description 4
- 238000005461 lubrication Methods 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- 230000008569 process Effects 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 208000027418 Wounds and injury Diseases 0.000 description 2
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- 230000000694 effects Effects 0.000 description 2
- 230000006355 external stress Effects 0.000 description 2
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- 230000006978 adaptation Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000005266 casting Methods 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 230000001050 lubricating effect Effects 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
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- 230000000750 progressive effect Effects 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
- 238000003756 stirring Methods 0.000 description 1
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- General Details Of Gearings (AREA)
Abstract
The utility model relates to a transmission power takeoff combination, which belongs to the technical field of transmissions and comprises a transmission housing, wherein a first installation area and a second installation area for installing the power takeoff are respectively arranged on two sides in the transmission housing; oil outlets are formed in the upper part and the lower part of the first installation area and the second installation area; a first power takeoff is arranged in the first installation area, and a second power takeoff is arranged in the second installation area; two universal oil holes communicated with the inside of the shells of the first power takeoff and the second power takeoff are formed in the shells of the first power takeoff and the second power takeoff, and the two universal oil holes on the first power takeoff and the second power takeoff correspond to the oil inlet holes and the oil outlet holes on the first installation area and the second installation area respectively; the first power takeoff rotates 180 degrees in the plane to obtain the second power takeoff. The first power takeoff is turned over by a certain angle to obtain a second power takeoff, and two universal oil holes are respectively corresponding to the oil inlet hole and the oil outlet hole, so that universality of the power takeoff is realized, and manufacturing cost can be reduced.
Description
Technical Field
The utility model belongs to the technical field of gearboxes, and particularly relates to a gearbox power takeoff combination.
Background
A transmission, also known as a gearbox, is a mechanism for changing rotational speed and torque from an engine that can fix or shift the ratio of the output shaft to the input shaft. The speed variator consists of speed-changing driving mechanism and operating mechanism, and some automobiles also have power output mechanism. Most of the transmission mechanisms are driven by common gears, and other transmission mechanisms are driven by planetary gears. Common gear transmission speed change mechanisms generally use slipping gears, synchronizers and the like.
The power take-off, which is one or more groups of speed changing gears, is also called a power output device, and is generally formed by combining a gear box, a clutch and a controller, and is connected with a low-gear of a gearbox or an output shaft of a secondary gearbox to output power to an external working device, such as a lifting pump and the like.
Along with the function and the application of the special vehicle becoming wider, the application amount of the power takeoff is also larger and larger, so that the high requirement on the universality of the power takeoff is realized in order to reduce the manufacturing cost and the maintenance cost, and meanwhile, along with the continuous improvement of the load of the special vehicle, the requirements on the bearing capacity and the service life of the power takeoff are also more severe.
Disclosure of utility model
The utility model provides a gearbox power takeoff combination which is universal in adaptation, and aims to solve the problems that power takeoff manufacturing cost is high and universality is poor in development of power takeoff of different specifications.
The utility model is realized by the following technical scheme:
The transmission power takeoff assembly comprises a transmission shell, wherein a first installation area and a second installation area for installing the power takeoff are respectively arranged on two sides in the transmission shell; oil inlet holes are formed in the upper parts of the first installation area and the second installation area, and oil outlet holes are formed in the lower parts of the first installation area and the second installation area;
A first power takeoff is arranged in the first installation area, and a second power takeoff is arranged in the second installation area; two universal oil holes communicated with the inside of the shells of the first power takeoff and the second power takeoff are formed in the shells of the first power takeoff and the second power takeoff, and the two universal oil holes on the first power takeoff and the second power takeoff correspond to the oil inlet holes and the oil outlet holes on the first installation area and the second installation area respectively;
The first power takeoff rotates 180 degrees in the plane to obtain the second power takeoff.
The first power takeoff is turned over by a certain angle to obtain a second power takeoff, the two power takeoff can be installed on the gearbox shell, two universal oil holes are corresponding to the oil inlet hole and the oil outlet hole respectively, universality of the power takeoff is achieved, and manufacturing cost can be reduced.
In a further improvement of the utility model, the outer shell surface of the first power takeoff is provided with a curved chamfer. The external stress intensity is improved, and the risk of injury to assembly personnel caused by the edges and corners of the shell is effectively reduced.
In a further improvement of the utility model, the inner housing surface of the first power take-off is provided with a curved chamfer. And the stress intensity of the structure is improved.
In a further development of the utility model, the first power take-off is provided with a fastening screw which can be passed through the gearbox housing. The fixing bolts penetrate through the gearbox shell and then are locked by the fastening nuts, so that the assembly efficiency is effectively improved.
The utility model further improves that the inner lower part of the first power takeoff is rotatably provided with an output gear shaft, and one side of the output gear shaft is connected with a flange penetrating and extending to the outside of the first power takeoff; the upper part of the output gear shaft is meshed with a driving gear, and one side, far away from the flange, of the driving gear is connected with an input shaft penetrating through the first power takeoff. The input shaft drives the flange to rotate through the driving gear and the output gear shaft, and the power output function of the power takeoff is completed.
In addition, the output gear shaft and the driving gear are both arranged in the first power takeoff through cylindrical roller bearings. And the smooth degree of rotation of the output gear shaft and the driving gear in the first power takeoff is improved through the cylindrical roller bearing.
The utility model further improves that a sliding sleeve is arranged in the first power takeoff and is arranged on the outer walls of the driving gear and the input shaft in a reciprocating sliding way through a spline; the sliding sleeve is connected with an elastic cylindrical pin through a shifting fork, one end, away from the shifting fork, of the elastic cylindrical pin is sleeved with a compression spring which is abutted against the inner wall of the first power takeoff, and in an initial state, the shifting fork is in linkage with the sliding sleeve to be meshed with the driving gear. Under the action of the compression spring, the shifting fork pushes the sliding sleeve to be meshed with the driving gear.
According to the utility model, the cylinder hole corresponding to one end of the elastic cylindrical pin, which is far away from the shifting fork, is further formed in the first power takeoff. The cylinder hole is used for pushing the elastic cylindrical pin to squeeze the compression spring, so that the sliding sleeve is meshed and linked with the input shaft and the driving gear simultaneously.
The elastic cylindrical pin is contacted with the inner wall of the first power takeoff through a sealing ring. The sealing performance of the elastic cylindrical pin and the inner wall of the power takeoff is improved.
In a further improvement of the utility model, the first power takeoff comprises a front shell and a rear shell which are assembled together through a fastener, and a sealing ring is arranged between the front shell and the rear shell. The assembly convenience of the power takeoff is improved.
From the technical scheme, the beneficial effects of the utility model are as follows: the first power takeoff is turned over by a certain angle to obtain a second power takeoff, the two power takeoff can be installed on the gearbox shell, two universal oil holes are corresponding to the oil inlet hole and the oil outlet hole respectively, universality of the power takeoff is achieved, and manufacturing cost can be reduced.
Drawings
In order to more clearly illustrate the technical solutions of the present utility model, the drawings that are needed in the description will be briefly introduced below, it being obvious that the drawings in the following description are only some embodiments of the present utility model, and that other drawings can be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a schematic illustration of the external construction of a transmission housing according to an embodiment of the present utility model.
FIG. 2 is a first structural schematic diagram of the interior side of a transmission housing according to an embodiment of the present utility model.
FIG. 3 is a second structural schematic diagram of the inner side of the transmission housing of an embodiment of the present utility model.
Fig. 4 is a schematic structural view of a first power takeoff according to an embodiment of the present utility model.
Fig. 5 is a schematic structural diagram of a second power take-off according to an embodiment of the present utility model.
FIG. 6 is a schematic cross-sectional view of a power take-off and transmission housing combination according to an embodiment of the utility model.
Fig. 7 is a schematic view of the internal structure of the power take-off according to the embodiment of the utility model.
In the accompanying drawings: 1. the gearbox comprises a gearbox housing 11, a first mounting area 12, a second mounting area 13, an oil inlet hole 14, an oil outlet hole 2, a first power takeoff 3, a second power takeoff 21, a front housing 22, a rear housing 221, a general oil hole 222, a cylinder hole 23, an output gear shaft 24, a flange 25, a driving gear 251, a cylindrical roller bearing 26, an input shaft 27, a sliding sleeve 28, a shifting fork 29, an elastic cylindrical pin 291, a compression spring 292 and a sealing ring.
Detailed Description
In order to make the objects, features and advantages of the present utility model more obvious and understandable, the technical solutions of the present utility model will be clearly and completely described below with reference to the drawings in this specific embodiment, and it is apparent that the embodiments described below are only some embodiments of the present utility model, but not all embodiments of the present utility model. All other embodiments, based on the embodiments in this patent, which would be within the purview of one of ordinary skill in the art without the particular effort to make the utility model are intended to be within the scope of the patent protection.
As shown in fig. 1-7, a transmission power takeoff assembly comprises a transmission housing 1, wherein a first installation area 11 and a second installation area 12 for installing the power takeoff are respectively arranged on two sides in the transmission housing 1; oil inlet holes 13 are formed in the upper parts of the first installation area 11 and the second installation area 12, and oil outlet holes 14 are formed in the lower parts of the first installation area 11 and the second installation area 12; a first power takeoff 2 is arranged in the first installation area 11, and a second power takeoff 3 is arranged in the second installation area 12; two universal oil holes 221 communicated with the inside of the shells of the first power takeoff 2 and the second power takeoff 3 are formed in the shells of the first power takeoff 2 and the second power takeoff 3, and the two universal oil holes 221 on the first power takeoff 2 and the second power takeoff 3 correspond to the oil inlet holes 13 and the oil outlet holes 14 on the first installation area 11 and the second installation area 12 respectively; the first power takeoff 2 rotates 180 degrees in the plane to obtain the second power takeoff 3.
The first power take-off 2 is provided with a fixing bolt which can penetrate through the gearbox housing 1. The fixing bolts penetrate through the gearbox housing 1 and then are locked by the fastening nuts, so that the assembly efficiency is effectively improved.
The first power takeoff 2 comprises a front shell 21 and a rear shell 22, the front shell 21 and the rear shell 22 are assembled together through fasteners, and a sealing ring 292 is arranged between the front shell 21 and the rear shell 22. The assembly convenience of the power takeoff is improved.
The inner lower part of the first power takeoff 2 is rotatably provided with an output gear shaft 23, and the output gear shaft 23 is installed in the first power takeoff 2 through a cylindrical roller bearing 251. The smooth degree of rotation of the output gear shaft 23 in the first power take-off 2 is promoted by the cylindrical roller bearing 251. One side of the output gear shaft 23 is connected with a flange 24 penetrating and extending to the outside of the first power takeoff 2; the flange 24 is provided on the rear housing 22.
A driving gear 25 is meshed above the output gear shaft 23, and the driving gear 25 is installed in the first power takeoff 2 through a cylindrical roller bearing 251. The smooth rotation of the transmission driving gear 25 in the first power take-off 2 is promoted by the cylindrical roller bearing 251. The side of the driving gear 25 remote from the flange 24 is connected with an input shaft 26 penetrating the first power take-off 2. The input shaft 26 drives the flange 24 to rotate through the driving gear 25 and the output gear shaft 23, so as to complete the power output function of the power takeoff. The input shaft 26 is engaged by external spline engagement with the transmission layshaft. The input shaft 26 is rotatably provided to the front case 21.
The first power takeoff 2 is also internally provided with a sliding sleeve 27, and the sliding sleeve 27 is arranged on the outer walls of the driving gear 25 and the input shaft 26 in a reciprocating sliding manner through a spline. That is, when the slide sleeve 27 is combined with the drive gear 25 and the input shaft 26, the first power take-off 2 is in a variable-force operation state.
The sliding sleeve 27 is connected with an elastic cylindrical pin 29 through a shifting fork 28, one end, far away from the shifting fork 28, of the elastic cylindrical pin 29 is sleeved with a compression spring 291 which is abutted against the inner wall of the first power takeoff 2, and in an initial state, the shifting fork 28 is linked with the sliding sleeve 27 to be meshed with the driving gear 25. Under the action of the compression spring 291, the elastic cylindrical pin 29 pushes the sliding sleeve 27 to be meshed with the driving gear 25 by the shifting fork 28.
The first power takeoff 2 is further provided with a cylinder hole 222 corresponding to one end of the elastic cylindrical pin 29 away from the shifting fork 28, and the cylinder hole 222 is provided on the rear shell 22. The cylinder hole 222 is used for pushing the elastic cylindrical pin 29 to squeeze the compression spring 291, so that the sliding sleeve 27 is meshed and linked with the input shaft 26 and the driving gear 25 at the same time. The elastic cylindrical pin 29 is contacted with the inner wall of the first power takeoff 2 through a sealing ring 292. Which helps to promote the tightness of the elastic cylindrical pin 29 against the inner wall of the power take-off.
In summary, when the power take-off is not in operation, the sliding sleeve 27 is only in spline engagement with the driving gear 25, the input shaft 26 is not connected with the driving gear 25, and power cannot be transmitted from the input shaft 26 to the driving gear 25.
When the power take-off is to be operated, the high pressure gas passes through the cylinder bore 222 of the rear housing 22, which will push the shift fork 28 to the left, which pushes the slide sleeve 27 to the left, and the slide sleeve 27 will be splined to the input shaft 26. The auxiliary shaft of the gearbox is connected with the input shaft 26 through a spline, power is transmitted into the input shaft 26 through the auxiliary shaft, the sliding sleeve 27 is simultaneously connected with the input shaft 26 and the driving gear 25 through the spline, the power is transmitted to the driving gear 25 through the sliding sleeve 27, the driving gear 25 is meshed with the output gear shaft 23 through gear teeth, the power is transmitted to the output gear shaft 23 through the driving gear 25, and finally the power is transmitted to a load of a special vehicle through the flange 24, so that the normal operation of the special vehicle is realized.
The same general oil hole 221 has different functions when being at different heights, meanwhile, in order to reduce the oil temperature during the operation of the power takeoff, the forced lubrication is used for circulating the gear oil, two general oil holes 221 are distributed on the end face of the front shell 21 of the power takeoff, the functions of the two general oil holes 221 can be determined according to the installation position of the power takeoff on a gearbox, the general oil hole 221 with a higher position is used as oil inlet, and the general oil hole 221 with a lower position is used as oil outlet. When the gearbox is in a working state, an oil pump of the gearbox sprays gear oil to the universal oil hole 221 with oil inlet function through an oil pipe, after the gear oil enters the power takeoff, the gear oil flows to the universal oil hole 221 with oil outlet function through stirring of internal components of the power takeoff and the action of gravity, and then flows into the gearbox through the universal oil hole 221 with oil outlet function. The forced lubrication can effectively reduce the working temperature of the power takeoff, ensure the lubrication effect of gear oil, and avoid faults such as pitting and burning caused by poor lubrication effect of the gear oil due to overhigh temperature.
Lubricating oil enters the oil outlet 14 of the gearbox housing 1 from the gearbox housing 1 through an oil delivery pipe, the oil outlet 14 of the gearbox housing 1 corresponds to the universal oil hole 221 of the power takeoff, the lubricating oil can continuously enter the power takeoff through oil pump pressurization, the lubricating oil flows downwards after entering the power takeoff, the universal oil hole 221 with the oil outlet function of the power takeoff from the lower side flows into the oil inlet 13 of the gearbox housing 1, so that the lubricating oil flows into the gearbox, one-time circulation is completed, the lubricating effect of each part can be enhanced through the flowing of the lubricating oil, heat generated in the operation process of the part can be taken away, and the temperature of the operation process of the power takeoff is effectively reduced.
The inner shell surface and the outer shell surface of the first power takeoff 2 are provided with curved chamfer angles. The external stress intensity is improved, and the risk of injury to assembly personnel caused by the edges and corners of the shell is effectively reduced. The stress concentration generated in casting and processing of the shell can be effectively reduced, the possibility that the power takeoff shell cracks under the action of torque is reduced, the reliability of the power takeoff shell in the working process is improved, and meanwhile the risk that the sharp protrusions scratch personnel in the assembly process can be reduced.
According to the gearbox power takeoff combination, the first power takeoff is turned over for a certain angle to obtain the second power takeoff, the two power takeoff can be installed on the gearbox shell, two universal oil holes are respectively corresponding to the oil inlet hole and the oil outlet hole, universality of the power takeoff is achieved, and manufacturing cost can be reduced.
In the present specification, each embodiment is described in a progressive manner, and each embodiment focuses on the difference from other embodiments, and the same and similar parts between the embodiments are only required to be referred to each other.
The terms "upper", "lower", "outside", "inside", and the like in the description and in the claims of the present utility model and in the above drawings, if any, are used for distinguishing between relative relationships in position and not necessarily for giving qualitative sense. It is to be understood that the data so used may be interchanged where appropriate such that the embodiments of the utility model described herein may be implemented in sequences other than those illustrated or otherwise described herein. Furthermore, the terms "comprise" and "have," as well as any variations thereof, are intended to cover a non-exclusive inclusion.
The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present utility model. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the utility model. Thus, the present utility model is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (10)
1. The transmission power takeoff combination comprises a transmission housing (1), and is characterized in that a first installation area (11) and a second installation area (12) for installing the power takeoff are respectively arranged on two sides in the transmission housing (1); the upper parts of the first installation area (11) and the second installation area (12) are respectively provided with an oil inlet (13), and the lower parts of the first installation area (11) and the second installation area (12) are respectively provided with an oil outlet (14);
A first power takeoff (2) is arranged in the first installation area (11), and a second power takeoff (3) is arranged in the second installation area (12); two universal oil holes (221) communicated with the inside of the shells of the first power takeoff (2) and the second power takeoff (3) are formed in the shells of the first power takeoff (2) and the second power takeoff (3), and the two universal oil holes (221) on the first power takeoff (2) and the second power takeoff (3) correspond to the oil inlet holes (13) and the oil outlet holes (14) on the first installation area (11) and the second installation area (12) respectively;
the first power takeoff (2) rotates 180 degrees in the plane to form a second power takeoff (3).
2. A transmission power take-off combination according to claim 1, characterized in that the outer envelope surface of the first power take-off (2) is provided with a curved chamfer.
3. A transmission power take-off combination according to claim 2, characterized in that the inner housing face of the first power take-off (2) is provided with a curved chamfer.
4. A transmission power take-off combination according to claim 1, characterised in that the first power take-off (2) is provided with a fixing bolt which can penetrate the transmission housing (1).
5. A transmission power take-off combination according to any one of claims 1 to 4, characterised in that the inner lower part of the first power take-off (2) is provided with an output gear shaft (23) in rotation, one side of the output gear shaft (23) being connected with a flange (24) extending through and out of the first power take-off (2); the upper part of the output gear shaft (23) is meshed with a driving gear (25), and one side, far away from the flange (24), of the driving gear (25) is connected with an input shaft (26) penetrating through the first power takeoff (2).
6. A transmission power take-off combination according to claim 5, characterised in that the output gear shaft (23) and the driving gear (25) are both mounted in the first power take-off (2) by means of cylindrical roller bearings (251).
7. The transmission power take-off assembly according to claim 5, wherein a sliding sleeve (27) is further arranged in the first power take-off (2), and the sliding sleeve (27) is arranged on the outer walls of the driving gear (25) and the input shaft (26) in a reciprocating sliding manner through a spline; the sliding sleeve (27) is connected with an elastic cylindrical pin (29) through a shifting fork (28), one end, away from the shifting fork (28), of the elastic cylindrical pin (29) is sleeved with a compression spring (291) which is in contact with the inner wall of the first power takeoff (2), and in an initial state, the shifting fork (28) is in linkage with the sliding sleeve (27) to be meshed with the driving gear (25).
8. A transmission power take-off assembly according to claim 7, characterised in that the first power take-off (2) is further provided with cylinder bores (222) corresponding to the ends of the elastic cylindrical pins (29) remote from the fork (28).
9. A transmission power take-off assembly according to claim 8, wherein the resilient cylindrical pin (29) is in contact with the inner wall of the first power take-off (2) via a sealing ring (292).
10. A transmission power take-off combination according to any one of claims 1 to 4, characterised in that the first power take-off (2) comprises a front housing (21) and a rear housing (22), the front housing (21) and the rear housing (22) being assembled together by means of fasteners, and a sealing ring (292) being provided between the front housing (21) and the rear housing (22).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322679937.3U CN220956687U (en) | 2023-10-07 | 2023-10-07 | Transmission power takeoff combination |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322679937.3U CN220956687U (en) | 2023-10-07 | 2023-10-07 | Transmission power takeoff combination |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220956687U true CN220956687U (en) | 2024-05-14 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202322679937.3U Active CN220956687U (en) | 2023-10-07 | 2023-10-07 | Transmission power takeoff combination |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220956687U (en) |
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2023
- 2023-10-07 CN CN202322679937.3U patent/CN220956687U/en active Active
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