CN210218576U - Power takeoff, gearbox and vehicle - Google Patents
Power takeoff, gearbox and vehicle Download PDFInfo
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- CN210218576U CN210218576U CN201920749737.1U CN201920749737U CN210218576U CN 210218576 U CN210218576 U CN 210218576U CN 201920749737 U CN201920749737 U CN 201920749737U CN 210218576 U CN210218576 U CN 210218576U
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- output shaft
- gear
- sleeved
- push rod
- spline
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Abstract
The utility model provides a power takeoff, a gearbox and a vehicle; the power takeoff is used for the gearbox, the power takeoff includes: the gear shifting device comprises a shell, an output shaft, a first bearing, an output gear and a gear shifting assembly; the output shaft is rotatably connected with the shell, one end of the output shaft extends to the outer side of the shell, and the output shaft is provided with a spline; the first bearing is sleeved on the output shaft; the output gear is sleeved on the first bearing, and an opening is formed in the output gear; the gear shifting assembly comprises a push rod and a spline sleeve, and the spline sleeve is sleeved on the outer side of the push rod; when the power takeoff is in a neutral gear, the spline sleeve is far away from the output gear, and the spline sleeve is far away from the output shaft; when the power takeoff is in a working gear, the spline sleeve is sleeved on the output shaft and matched with the spline, and the spline sleeve is clamped in the opening. The power takeoff avoids damage to the teeth of the gear.
Description
Technical Field
The utility model relates to a vehicle transmission technical field particularly, relates to a power takeoff, gearbox and vehicle.
Background
At present, a power takeoff is provided on a gearbox of a heavy truck or a work vehicle so that the gearbox can output power to a functional module of the vehicle. The power take-off device comprises an input shaft and an output shaft, wherein the input shaft obtains power from the gearbox and transmits the power to the output shaft, and the output shaft transmits the power to the functional module so as to drive the functional module.
In the related art, when the functional module needs power, the input gear assembly is meshed with the output gear, so that the power is transmitted, and when the functional module does not need power, the input gear assembly is separated from the output gear, so that the load of the gearbox is reduced; however, during the gear shifting process, the rotating input gear assembly is in contact with the stationary output gear, so that the gear teeth are stressed too much during the contact of the two gears, and the gear teeth are easily damaged.
SUMMERY OF THE UTILITY MODEL
The present invention aims at least solving one of the technical problems existing in the prior art or the related art.
To this end, the utility model discloses a first aspect provides a power takeoff.
A second aspect of the present invention provides a transmission.
A third aspect of the present invention provides a vehicle.
In view of this, the utility model discloses a first aspect provides a power takeoff for the gearbox, the power takeoff includes: the gear shifting device comprises a shell, an output shaft, a first bearing, an output gear and a gear shifting assembly; the output shaft is rotatably connected with the shell, one end of the output shaft extends to the outer side of the shell, and the output shaft is provided with a spline; the first bearing is sleeved on the output shaft; the output gear is sleeved on the first bearing, and an opening is formed in the output gear; the gear shifting assembly comprises a push rod and a spline sleeve, and the spline sleeve is sleeved on the outer side of the push rod; when the power takeoff is in a neutral gear, the spline sleeve is far away from the output gear, and the spline sleeve is far away from the output shaft; when the power takeoff is in a working gear, the spline sleeve is sleeved on the output shaft and matched with the spline, and the spline sleeve is clamped in the opening.
The power takeoff provided by the utility model has the advantages that the output gear is sleeved on the output shaft through the first bearing sleeve, and the output shaft can rotate along with the output gear or not along with the output gear while supporting the output gear; the spline sleeve can be sleeved on the output shaft or is far away from the output shaft; the spline sleeve is sleeved on the output shaft, a spline on the output shaft is matched with the spline sleeve, the spline sleeve and the output shaft rotate together, and meanwhile, the spline sleeve is clamped on the output gear and rotates together with the output gear, so that the power takeoff is subjected to gear shifting through the spline sleeve, the input gear assembly and the output gear are prevented from being switched between meshing and separating, and further the damage of the teeth of the gear is avoided; because the spline housing is connected with the output shaft through the spline, the strength of the spline is far greater than that of the gear teeth, and the service life of the power takeoff can be effectively prolonged; in the gear shifting process, the spline sleeve and the output shaft are in a static state, and force cannot be applied between the spline sleeve and the output shaft, so that the damage to the spline on the gear shifting sleeve and the output shaft is prevented; after the spline housing is connected with the output shaft, the tip of spline housing contacts with output gear's lateral wall, under the drive of frictional force, the spline housing begins to rotate, but possess certain rotational speed difference between spline housing and the output gear, when the spline housing joint was on the gear, the spline housing rotated with output gear is synchronous, because when the spline housing joint was on output gear, certain initial velocity had been possessed, can reduce the atress of mutually joint in-process spline housing and output gear, can further reduce the possibility that spline housing and gear damaged, promote the life of power takeoff.
Preferably, the side wall or the end part of the spline housing is provided with a protrusion, and when the power takeoff is in a working gear, the protrusion is inserted into the opening.
Preferably, the first bearing is a needle bearing.
Additionally, the utility model provides an among the above-mentioned technical scheme power takeoff can also have following additional technical characteristics:
in the above technical solution, preferably, the power takeoff further includes a driving assembly, and the driving assembly includes a piston, and the piston is disposed toward the push rod.
In this technical scheme, the power takeoff is through setting up drive assembly, drive assembly's piston drive push rod, and then drives the axial motion of spline housing along the output shaft, realizes the automatic gearshift of power takeoff.
In any of the above technical solutions, preferably, the driving assembly is a cylinder or an electric telescopic rod.
In this technical scheme, set up drive assembly into cylinder or electronic flexible subassembly, be convenient for carry out automatic control to drive assembly to compressed gas and electric energy are all common energy on the vehicle, make drive assembly more convenient to acquireing of power.
Preferably, the electric telescopic assembly comprises a screw rod, a threaded sleeve and a motor, the motor drives the threaded sleeve to rotate, the threaded sleeve is connected to the screw rod in a screwed mode, and the threaded sleeve rotates to drive the screw rod to stretch and further drive the push rod.
In any of the above technical solutions, preferably, the shift assembly further includes a lock pin, and the lock pin passes through the spline housing along a radial direction of the push rod and is connected with the push rod.
In the technical scheme, the spline housing is fixed on the push rod by the lock pin, so that the spline housing moves along with the push rod, and the positioning between the spline housing and the push rod is realized.
In any one of the above technical solutions, preferably, the shift assembly further includes: the double-row tapered roller bearing is sleeved on the push rod, and the spline sleeve is sleeved on the double-row tapered roller bearing.
In the technical scheme, the double-row tapered roller bearing can realize axial positioning of the spline housing and support the spline housing, and the push rod cannot rotate along with the spline housing in the working process of the power takeoff, so that friction between the push rod and the piston is avoided.
In any of the above solutions, preferably, the power take-off further comprises an input shaft and an input gear assembly; the input shaft is connected with the shell; the input gear assembly is respectively meshed with an idler gear of the gearbox and the output gear so as to transmit power from the idler gear to the output gear.
In the technical scheme, an input gear assembly is supported by an input shaft, and is meshed with an idler wheel, so that power is obtained from the idler wheel.
Preferably, the input gear assembly includes a first input gear and a second input gear, the first input gear and the second input gear are respectively sleeved on two sides of the input shaft, the first input gear is meshed with the idle gear, and the second input gear is meshed with the output gear.
In any of the above technical solutions, preferably, the shift assembly further includes a seal seat and a spring; the sealing seat is clamped on the output shaft; one end of the spring is connected with the sealing seat, and the other end of the spring is connected with the push rod.
In this technical scheme, after drive assembly's thrust disappeared, the spring promoted the push rod and resets, and then drives the spline housing and keep away from the output shaft.
In any of the above technical solutions, preferably, the power takeoff further includes an output shaft cover and a seal ring; the output shaft cover is connected with the shell and sleeved outside the output shaft; the sealing ring is clamped on the output shaft cover, and the inner ring of the sealing ring is in contact with the output shaft.
In the technical scheme, the output shaft cover can protect the output shaft and prevent the output shaft from being impacted, and the output shaft cover can be connected with a part needing power on the vehicle, so that the output shaft can stably transmit the power to the part needing power on the vehicle.
The utility model discloses the second aspect provides a gearbox, include as above-mentioned arbitrary technical scheme the power takeoff, consequently this power takeoff has above-mentioned arbitrary technical scheme whole beneficial effect of power takeoff.
The utility model discloses the third aspect provides a vehicle, include the power takeoff as above-mentioned any technical scheme, or as above-mentioned technical scheme the gearbox, therefore this vehicle possesses the power takeoff of above-mentioned any technical scheme, or as above-mentioned technical scheme whole beneficial effect of gearbox.
Preferably, the vehicle is a truck, a bus or a technical vehicle.
Additional aspects and advantages of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.
Drawings
The above and/or additional aspects and advantages of the present invention will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:
fig. 1 shows a schematic structural view of a power take-off according to an embodiment of the invention;
figure 2 shows a schematic view of part of a gearbox according to an embodiment of the invention;
wherein, the correspondence between the reference numbers and the component names in fig. 1 and fig. 2 is:
10 power take-offs, 102 housing, 104 cylinder, 106 piston, 108 shift assembly, 1082 push rod, 1084 spline housing, 1086 lock pin, 114 input shaft, 116 first input gear, 118 second input gear, 120 output shaft, 122 first bearing, 124 output gear, 126 seal seat, 128 spring, 130 output shaft cover, 132 seal ring, 20 idler.
Detailed Description
In order to make the aforementioned objects, features and advantages of the present invention more clearly understood, the present invention will be described in further detail with reference to the accompanying drawings and detailed description. It should be noted that the embodiments and features of the embodiments of the present application may be combined with each other without conflict.
In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention, however, the present invention may be practiced in other ways than those specifically described herein, and therefore the scope of the present invention is not limited by the specific embodiments disclosed below.
Power takeoff, transmission and vehicle according to some embodiments of the present invention are described below with reference to fig. 1 and 2.
In an embodiment of the first aspect of the present invention, as shown in fig. 1, the present invention provides a power takeoff 10 for a transmission, where the power takeoff 10 includes: the housing 102, the output shaft 120, the first bearing 122, the output gear 124, and the shift assembly 108; the output shaft 120 is rotatably connected with the housing 102, one end of the output shaft 120 extends to the outside of the housing 102, and the output shaft 120 is provided with a spline; the first bearing 122 is sleeved on the output shaft 120; the output gear 124 is sleeved on the first bearing 122, and an opening is formed in the output gear 124; the shift assembly 108 comprises a push rod 1082 and a spline housing 1084, wherein the spline housing 1084 is sleeved outside the push rod 1082; wherein, when the power take-off 10 is in neutral, the spline housing 1084 is remote from the output gear 124, and the spline housing 1084 is remote from the output shaft 120; when the power takeoff 10 is in a working gear, the spline housing 1084 is sleeved on the output shaft 120 and is matched with the spline, and the spline housing 1084 is clamped in the opening.
In this embodiment, the output gear 124 is sleeved on the output shaft 120 through the first bearing 122, and the output shaft 120 can rotate with the output gear 124 or not together with the output gear 124 while supporting the output gear 124; the spline housing 1084 can be sleeved on the output shaft 120 or away from the output shaft 120; the spline housing 1084 is sleeved on the output shaft 120, a spline on the output shaft 120 is matched with the spline housing 1084, the spline housing 1084 and the output shaft 120 rotate together, and meanwhile, the spline housing 1084 is clamped on the output gear 124 and rotates together with the output gear 124, so that the power takeoff 10 shifts gears through the spline housing 1084, the input gear assembly and the output gear 124 are prevented from being switched between meshing and separating, and further the damage to the teeth of the gears is avoided; because the spline housing 1084 is connected with the output shaft 120 through a spline, the strength of the spline is much greater than that of the gear teeth, and the service life of the power takeoff 10 can be effectively prolonged; in the gear shifting process, the spline sleeve 1084 and the output shaft 120 are both in a static state, and force is not applied between the spline sleeve 1084 and the output shaft 120, so that the damage of the spline on the gear shifting sleeve and the output shaft 120 is prevented; after the spline housing 1084 is connected with the output shaft 120, the end of the spline housing 1084 contacts with the side wall of the output gear 124, the spline housing 1084 starts to rotate under the driving of friction force, but a certain difference in rotation speed exists between the spline housing 1084 and the output gear 124, until the spline housing 1084 is clamped on the gear, the spline housing 1084 and the output gear 124 rotate synchronously, because the spline housing 1084 has a certain initial speed when being clamped on the output gear 124, the stress on the spline housing 1084 and the output gear 124 in the phase clamping process can be reduced, the possibility of damage to the spline housing 1084 and the gear can be further reduced, and the service life of the power takeoff 10 can be prolonged.
Preferably, the spline housing 1084 is provided with a protrusion on a side wall or end thereof, which is inserted into the opening when the power take-off 10 is in the operating position.
Preferably, the first bearing 122 is a needle bearing.
In one embodiment of the present invention, preferably, as shown in fig. 1, the power takeoff 10 further comprises a driving assembly, the driving assembly comprising a piston 106, the piston 106 being disposed toward the push rod 1082.
In this embodiment, the power takeoff 10 is provided with a driving assembly, and the piston 106 of the driving assembly drives the push rod 1082, so as to drive the spline sleeve 1084 to move along the axial direction of the output shaft 120, so that the power takeoff 10 is automatically shifted.
In an embodiment of the present invention, preferably, the driving assembly is a cylinder 104 or an electric telescopic rod.
In this embodiment, the driving assembly is set to be the cylinder 104 or the electric telescopic assembly, so that the driving assembly is automatically controlled, and compressed gas and electric energy are common energy sources on the vehicle, so that the driving assembly can obtain power more conveniently.
Preferably, electronic flexible subassembly includes the screw rod, thread bush and motor, and the motor drive thread bush rotates, and the thread bush connects on the screw rod soon, and the thread bush rotates and drives the screw rod flexible, and then drive push rod 1082.
In an embodiment of the present invention, preferably, as shown in fig. 1, the shift assembly 108 further includes a lock pin 1086, and the lock pin 1086 penetrates the spline housing 1084 along a radial direction of the push rod 1082 and is connected with the push rod 1082.
In this embodiment, the locking pin 1086 secures the splined hub 1084 to the push rod 1082 such that the splined hub 1084 moves with the push rod 1082, enabling positioning between the splined hub 1084 and the push rod 1082.
In an embodiment of the present invention, preferably, as shown in fig. 1, the shift assembly 108 further includes: the double-row tapered roller bearing is sleeved on the push rod 1082, and the spline sleeve 1084 is sleeved on the double-row tapered roller bearing.
In this embodiment, the double row tapered roller bearing can axially position the spline housing 1084 and support the spline housing 1084, and during operation of the power takeoff 10, the push rod 1082 will not rotate with the spline housing 1084, thereby preventing friction between the push rod 1082 and the piston 106.
In one embodiment of the present invention, preferably, as shown in fig. 1 and 2, the power take-off 10 further comprises an input shaft 114 and an input gear assembly; the input shaft 114 is connected with the housing 102; the input gear assembly meshes with the idler gear 20 and the output gear 124 of the gearbox, respectively, to transfer power from the idler gear 20 to the output gear 124.
In this embodiment, the input shaft 114 supports an input gear assembly that meshes with the idler gear 20 and draws power from the idler gear 20.
Preferably, the input gear assembly includes a first input gear 116 and a second input gear 118, the first input gear 116 and the second input gear 118 are respectively sleeved on two sides of the input shaft 114, the first input gear 116 is engaged with the idle gear 20, and the second input gear 118 is engaged with the output gear 124.
In one embodiment of the present invention, preferably, as shown in fig. 1, the shifting assembly 108 further comprises a seal seat 126 and a spring 128; the sealing seat 126 is clamped on the output shaft 120; one end of the spring 128 is connected to the sealing seat 126, and the other end is connected to the push rod 1082.
In this embodiment, when the driving assembly thrust force is removed, the spring 128 pushes the push rod 1082 to return, thereby moving the spline housing 1084 away from the output shaft 120.
In one embodiment of the present invention, preferably, as shown in fig. 1, the power takeoff 10 further comprises an output shaft cover 130 and a sealing ring 132; the output shaft cover 130 is connected to the housing 102 and sleeved outside the output shaft 120; the sealing ring 132 is clamped on the output shaft cover 130, and an inner ring of the sealing ring 132 contacts with the output shaft 120.
In this embodiment, the output shaft cover 130 may protect the output shaft 120 from being hit, and the output shaft cover 130 may be connected with a component requiring power on the vehicle such that the output shaft 120 stably transmits power to the component requiring power on the vehicle.
In an embodiment of the second aspect of the present invention, the present invention provides a transmission, comprising a power takeoff 10 as described in any one of the above embodiments, so that the power takeoff 10 has all the benefits of the power takeoff 10 as described in any one of the above embodiments.
In an embodiment of the third aspect of the present invention, the present invention provides a vehicle, comprising the power takeoff 10 as described in any one of the above embodiments, or a transmission as described in any one of the above embodiments, so that the vehicle has all the advantages of the power takeoff 10 as described in any one of the above embodiments, or the transmission as described in any one of the above embodiments.
Preferably, the vehicle is a truck, a bus or a technical vehicle.
In the description of the present invention, the terms "plurality" or "a plurality" refer to two or more, and unless otherwise specifically limited, the terms "upper", "lower", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are merely for convenience of description and simplification of description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present invention; the terms "connected," "mounted," "secured," and the like are to be construed broadly and include, for example, fixed connections, removable connections, or integral connections; may be directly connected or indirectly connected through an intermediate. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.
In the description of the present invention, the description of the terms "one embodiment," "some embodiments," "specific embodiments," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In the present disclosure, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (11)
1. A power take-off for a gearbox, comprising:
a housing;
the output shaft is rotatably connected with the shell, one end of the output shaft extends to the outer side of the shell, and the output shaft is provided with a spline;
the first bearing is sleeved on the output shaft;
the output gear is sleeved on the first bearing and provided with an opening;
the gear shifting assembly comprises a push rod and a spline sleeve, and the spline sleeve is sleeved on the outer side of the push rod;
when the power takeoff is in a neutral gear, the spline sleeve is far away from the output gear, and the spline sleeve is far away from the output shaft;
when the power takeoff is in a working gear, the spline sleeve is sleeved on the output shaft and matched with the spline, and the spline sleeve is clamped in the opening.
2. The power takeoff of claim 1, further comprising:
a drive assembly including a piston disposed toward the push rod.
3. The power take-off of claim 2,
the driving component is a cylinder or an electric telescopic rod.
4. The power take-off of claim 1, wherein the shift assembly further comprises:
and the lock pin penetrates through the spline sleeve along the radial direction of the push rod and is connected with the push rod.
5. The power take-off of claim 1, wherein the shift assembly further comprises:
the double-row tapered roller bearing is sleeved on the push rod, and the spline sleeve is sleeved on the double-row tapered roller bearing.
6. The power takeoff of claim 1, further comprising:
an input shaft connected with the housing;
an input gear assembly meshed with an idler gear of the gearbox and the output gear, respectively, to transmit power from the idler gear to the output gear.
7. The power take-off of claim 1, wherein the shift assembly further comprises:
the sealing seat is clamped on the output shaft;
and one end of the spring is connected with the sealing seat, and the other end of the spring is connected with the push rod.
8. The power take-off of any one of claims 1 to 7, further comprising:
the output shaft cover is connected with the shell and sleeved outside the output shaft;
and the sealing ring is clamped on the output shaft cover, and the inner ring of the sealing ring is contacted with the output shaft.
9. A gearbox comprising a power take-off as claimed in any one of claims 1 to 8.
10. A vehicle comprising a power take-off as claimed in any one of claims 1 to 8.
11. A vehicle comprising a gearbox according to claim 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920749737.1U CN210218576U (en) | 2019-05-23 | 2019-05-23 | Power takeoff, gearbox and vehicle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920749737.1U CN210218576U (en) | 2019-05-23 | 2019-05-23 | Power takeoff, gearbox and vehicle |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210218576U true CN210218576U (en) | 2020-03-31 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920749737.1U Active CN210218576U (en) | 2019-05-23 | 2019-05-23 | Power takeoff, gearbox and vehicle |
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| CN (1) | CN210218576U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112178067A (en) * | 2020-09-18 | 2021-01-05 | 陕西法士特汽车传动集团有限责任公司 | Power takeoff assembly and application |
| CN113551011A (en) * | 2020-04-26 | 2021-10-26 | 浙江万里扬股份有限公司 | Power takeoff and vehicle |
-
2019
- 2019-05-23 CN CN201920749737.1U patent/CN210218576U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113551011A (en) * | 2020-04-26 | 2021-10-26 | 浙江万里扬股份有限公司 | Power takeoff and vehicle |
| CN112178067A (en) * | 2020-09-18 | 2021-01-05 | 陕西法士特汽车传动集团有限责任公司 | Power takeoff assembly and application |
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