CN210218657U - Power takeoff, gearbox and vehicle - Google Patents
Power takeoff, gearbox and vehicle Download PDFInfo
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- CN210218657U CN210218657U CN201920749738.6U CN201920749738U CN210218657U CN 210218657 U CN210218657 U CN 210218657U CN 201920749738 U CN201920749738 U CN 201920749738U CN 210218657 U CN210218657 U CN 210218657U
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- output shaft
- sealing ring
- piston
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- push rod
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Abstract
The utility model provides a power takeoff, a gearbox and a vehicle, wherein the power takeoff is used for the gearbox and comprises a shell, a cylinder cover, a piston, a gear shifting assembly, a first sealing ring and a second sealing ring; the cylinder cover is connected with the shell and provided with a gas port and a cavity, and the gas port is communicated with the cavity; the piston is arranged in the cavity; the gear shifting assembly comprises a push rod, and one end of the push rod faces the piston; the first sealing ring is sleeved on the piston and is contacted with the inner wall of the cavity; the second sealing ring is sleeved on the piston, is positioned on one side of the first sealing ring and is contacted with the inner wall of the cavity. The utility model provides a power takeoff, the cover is equipped with first sealing washer and second sealing washer on the piston, and first sealing washer and second sealing washer realize double seal, have promoted the leakproofness between cylinder head and the piston, and then ensure that the motion of piston is more stable, promote the reliability of power takeoff work.
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 output shaft is connected with the input shaft through the gear shifting assembly, so that the power transmission is realized, and when the functional module does not need power, the output shaft is separated from the input shaft, so that the load of the gearbox is reduced; however, in the working process of the power takeoff, an operator needs to manually control the gear shifting assembly, so that the automation degree of the vehicle is reduced.
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 provides a first aspect provides a power takeoff for the gearbox, and the power takeoff includes casing, cylinder head, piston, gearshift subassembly, first sealing washer and second sealing washer; the cylinder cover is connected with the shell and provided with a gas port and a cavity, and the gas port is communicated with the cavity; the piston is arranged in the cavity; the gear shifting assembly comprises a push rod, and one end of the push rod faces the piston; the first sealing ring is sleeved on the piston and is contacted with the inner wall of the cavity; the second sealing ring is sleeved on the piston, is positioned on one side of the first sealing ring and is contacted with the inner wall of the cavity.
The utility model provides a power takeoff is provided with the cavity in the cylinder head, and the piston slides in the cavity, and in compressed gas entered into the cavity, the drive piston motion, and then the push rod motion of drive shift assembly has realized the switching of keeping off the position of power takeoff to through compressed gas drive shift assembly, be convenient for realize the automatic control to shift assembly, promoted the degree of automation of vehicle. The piston is sleeved with the first sealing ring and the second sealing ring, double sealing is achieved through the first sealing ring and the second sealing ring, sealing performance between the cylinder cover and the piston is improved, movement of the piston is further guaranteed to be more stable, and reliability of work of the power takeoff is improved. Compressed gas is a common power source of a heavy truck or an engineering vehicle, and the power takeoff drives the piston through the compressed gas, so that the power is more convenient to obtain.
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 first sealing ring is a Y-shaped sealing ring, and an opening end of the Y-shaped sealing ring faces the air port; the second sealing ring is an O-shaped sealing ring.
In the technical scheme, the first sealing ring is a Y-shaped sealing ring, the opening of the Y-shaped sealing ring faces the air port, when compressed air enters the cavity from the air port, the pressure of the compressed air to the two sides is applied to the opening of the Y-shaped sealing ring, so that the opening of the Y-shaped sealing ring is respectively in closer contact with the piston and the inner wall of the cavity, and the sealing effect of the first sealing ring is further improved; the second sealing ring is an O-shaped sealing ring, and further plays a role in supporting the piston while playing a role in sealing, so that the piston can move more smoothly.
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 engaged with an idler gear of the transmission to derive power from the idler 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.
In any of the above technical solutions, preferably, the power takeoff further includes an output shaft, a first bearing, and an output gear; the output shaft is rotationally connected with the shell, and one end of the output shaft extends to the outer side of the shell; the first bearing is sleeved on the output shaft; the output gear is sleeved on the first bearing and meshed with the input gear assembly.
In the technical scheme, the output gear is sleeved on the output shaft through the first bearing and meshed with the input gear assembly, and the output shaft can rotate along with the output gear or not along with the output gear while supporting the output gear, so that the control of power output is realized.
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.
Preferably, the first bearing is a needle bearing.
In any of the above technical solutions, preferably, the output shaft is provided with a spline, the output gear is provided with an opening, and the shift assembly further includes a spline housing and a lock pin; the spline sleeve is sleeved outside the push rod; the lock pin penetrates through the spline sleeve along the radial direction of the push rod and is connected with 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.
In the technical scheme, the spline sleeve is fixed on the push rod by the lock pin, the spline sleeve moves along with the push rod, the piston pushes the push rod to further drive the spline sleeve to move, and 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, meanwhile, the spline sleeve is clamped on the output gear and rotates together with the output gear, at the moment, the input gear assembly is meshed with the idle gear and rotates along with the rotation of the idle gear to obtain power, the output gear is meshed with the input gear assembly and rotates along with the rotation of the input gear assembly, and the output gear drives the output shaft to rotate so as to realize power output; when the spline housing is not sleeved on the output shaft or the spline housing is not clamped on the output gear, the output shaft does not rotate along with the rotation of the output gear, and the power takeoff does not have power output.
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.
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 the compressed gas in the cylinder head disappeared, the spring promoted the push rod and resets, and then drives the spline housing and keep away from the output shaft.
Preferably, the output shaft is provided with the through-hole along the axial, and the seal receptacle joint is in this through-hole, when supporting spring, still can seal this through-hole, avoids the lubricating oil in the power takeoff to leak to the power takeoff outside by this through-hole.
In any of the above technical solutions, preferably, the power takeoff further includes an output shaft cover and a third seal ring; the output shaft cover is connected with the shell and sleeved outside the output shaft; the third sealing ring is clamped on the output shaft cover, and the inner ring of the third sealing ring is contacted 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 third sealing ring is used for sealing a gap between the output shaft and the output shaft cover.
The components that require power on the vehicle include, but are not limited to, the lifting components of the truck bed, the concrete mixing assembly of the concrete mixing truck, and the like.
In any one of the above technical solutions, preferably, the shift assembly further includes a connecting member, the connecting member is connected to one end of the push rod, the other end of the connecting member faces the piston, and the other end of the connecting member is spherical.
In this technical scheme, when the spline housing joint was on output gear, the push rod rotated along with output gear is together, and the push rod contacts with the piston through the connecting piece, reduced the frictional force between piston and the push rod, avoided the piston to rotate along with the push rod together, and then reduced the wearing and tearing of first sealing member and second sealing member, promoted the life-span of first sealing member and second sealing member.
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 head, 1042 port, 106 piston, 108 shift assembly, 1082 pushrod, 1084 spline housing, 1086 lock pin, 110 first seal, 112 second seal, 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 third seal, 134 coupling, 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, the power takeoff 10 comprising a housing 102, a cylinder head 104, a piston 106, a shift assembly 108, a first seal ring 110 and a second seal ring 112; the cylinder cover 104 is connected with the shell 102, the cylinder cover 104 is provided with a gas port 1042 and a cavity, and the gas port 1042 is communicated with the cavity; a piston 106 is disposed within the cavity; shift assembly 108 includes a push rod 1082, one end of push rod 1082 facing piston 106; the first sealing ring 110 is sleeved on the piston 106 and contacts with the inner wall of the cavity; the second sealing ring 112 is sleeved on the piston 106 and located at one side of the first sealing ring 110, and contacts with the inner wall of the cavity.
In this embodiment, a cavity is provided in the cylinder head 104, the piston 106 slides in the cavity, and the compressed gas enters into the cavity to drive the piston 106 to move, so as to drive the push rod 1082 of the shift assembly 108 to move, thereby implementing the shift of the power takeoff 10, and driving the shift assembly 108 by the compressed gas, thereby facilitating the implementation of the automatic control of the shift assembly 108, and improving the automation degree of the vehicle. The piston 106 is sleeved with a first sealing ring 110 and a second sealing ring 112, the first sealing ring 110 and the second sealing ring 112 realize double sealing, the sealing performance between the cylinder cover 104 and the piston 106 is improved, the movement of the piston 106 is further ensured to be more stable, and the working reliability of the power takeoff 10 is improved. Compressed gas is a common power source for heavy trucks or work vehicles, and since the power takeoff 10 drives the piston 106 by compressed gas, power is more conveniently obtained.
In one embodiment of the present invention, preferably, as shown in fig. 1, the first sealing ring 110 is a Y-shaped sealing ring, and the open end of the Y-shaped sealing ring faces the air port 1042; the second seal ring 112 is an O-ring seal.
In this embodiment, the first sealing ring 110 is a Y-shaped sealing ring, an opening of the Y-shaped sealing ring faces the gas port 1042, and when the compressed gas enters the cavity from the gas port 1042, the pressure of the compressed gas on two sides is applied to the opening of the Y-shaped sealing ring, so that the opening of the Y-shaped sealing ring is respectively in closer contact with the piston 106 and the inner wall of the cavity, thereby improving the sealing effect of the first sealing ring 110; the second sealing ring 112 is an O-ring, and further plays a supporting role for the piston 106 while playing a sealing effect, so that the movement of the piston 106 is smoother.
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 an idler gear 20 of the transmission to derive power from the idler gear 20.
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.
In one embodiment of the present invention, preferably, as shown in fig. 1, the power take-off 10 further comprises an output shaft 120, a first bearing 122 and an output gear 124; the output shaft 120 is rotatably connected with the housing 102, and one end of the output shaft 120 extends to the outer side of the housing 102; the first bearing 122 is sleeved on the output shaft 120; the output gear 124 is sleeved on the first bearing 122 and meshed with the input gear assembly.
In this embodiment, the output gear 124 is sleeved on the output shaft 120 through the first bearing 122 and engaged with the input gear assembly, and the output shaft 120 can rotate with the output gear 124 or not while supporting the output gear 124, thereby realizing the control of power output.
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.
Preferably, the first bearing 122 is a needle bearing.
In one embodiment of the present invention, preferably, as shown in fig. 1, the output shaft 120 is provided with splines, the output gear 124 is provided with openings, and the shift assembly 108 further includes a spline housing 1084 and a lock pin 1086; the spline sleeve 1084 is sleeved outside the push rod 1082; the lock pin 1086 penetrates the spline housing 1084 in the radial direction of the push rod 1082, and is connected with the push rod 1082; wherein when the power take-off 10 is in neutral, the spline housing 1084 is spaced away from the output gear 124 and the spline housing 1084 is spaced away 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 matched with the spline, and the spline housing 1084 is clamped in the opening.
In this embodiment, the locking pin 1086 fixes the spline housing 1084 on the push rod 1082, the spline housing 1084 moves with the push rod 1082, the piston 106 pushes the push rod 1082 to drive the spline housing 1084 to move, so that 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, the spline on the output shaft 120 is matched with the spline housing 1084, the spline housing 1084 and the output shaft 120 rotate together, meanwhile, the spline housing 1084 is clamped on the output gear 124 and rotates together with the output gear 124, at the moment, the input gear assembly is meshed with the idle gear 20 and rotates along with the rotation of the idle gear 20, so that power is obtained, the output gear 124 is meshed with the input gear assembly and rotates along with the rotation of the input gear assembly, and the output gear 124 drives the output shaft 120 to rotate, so that power output is realized; when the spline housing 1084 is not sleeved on the output shaft 120, or the spline housing 1084 is not clamped on the output gear 124, the output shaft 120 does not rotate along with the rotation of the output gear 124, and the power takeoff 10 does not have power output.
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 is in the operating position.
In one embodiment of the present invention, preferably, as shown in fig. 1, the shift assembly 108 further includes a seal seat 126 and a spring 128; the sealing seat 126 is clamped on the output shaft 120; the spring 128 is connected at one end to the seal holder 126 and at the other end to the push rod 1082.
In this embodiment, when the compressed gas within the cylinder head 104 is removed, the spring 128 urges the push rod 1082 to return, thereby moving the splined hub 1084 away from the output shaft 120.
Preferably, the output shaft 120 is provided with a through hole along the axial direction, and the sealing seat 126 is clamped in the through hole, and the through hole can be sealed while supporting the spring 128, so as to prevent the lubricating oil in the power takeoff 10 from leaking to the outside of the power takeoff 10.
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 third sealing ring 132; the output shaft cover 130 is connected with the housing 102 and sleeved outside the output shaft 120; the third sealing ring 132 is clamped on the output shaft cover 130, and the inner ring of the third 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. The third seal ring 132 is used to seal a gap between the output shaft 120 and the output shaft cover 130.
The components that require power on the vehicle include, but are not limited to, the lifting components of the truck bed, the concrete mixing assembly of the concrete mixing truck, and the like.
In one embodiment of the present invention, preferably, as shown in fig. 1, the shifting unit 108 further includes a connecting member 134, the connecting member 134 is connected to one end of the push rod 1082, the other end faces the piston 106, and the other end of the connecting member 134 is spherical.
In this embodiment, when the spline housing 1084 is engaged with the output gear 124, the push rod 1082 rotates with the output gear 124, and the push rod 1082 contacts the piston 106 through the connecting member 134, so as to reduce the friction between the piston 106 and the push rod 1082, prevent the piston 106 from rotating with the push rod 1082, reduce the wear of the first and second sealing members, and prolong the service life of the first and second sealing members.
In a second embodiment of the present invention, the present invention provides a transmission, comprising a power takeoff 10 according to any of the above embodiments, so that the power takeoff 10 has all the benefits of the power takeoff 10 according to any of the above embodiments.
In a 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 the 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 cylinder cover is connected with the shell and provided with a gas port and a cavity, and the gas port is communicated with the cavity;
a piston disposed within the cavity;
a shift assembly including a push rod having one end facing the piston;
the first sealing ring is sleeved on the piston and is in contact with the inner wall of the cavity;
and the second sealing ring is sleeved on the piston, is positioned on one side of the first sealing ring and is contacted with the inner wall of the cavity.
2. The power take-off of claim 1,
the first sealing ring is a Y-shaped sealing ring, and the opening end of the Y-shaped sealing ring faces the air port;
the second sealing ring is an O-shaped sealing ring.
3. The power takeoff of claim 1, further comprising:
an input shaft connected with the housing;
an input gear assembly that meshes with an idler of the gearbox to derive power from the idler.
4. The power takeoff of claim 3, further comprising:
the output shaft is rotatably connected with the shell, and one end of the output shaft extends to the outer side of the shell;
the first bearing is sleeved on the output shaft;
and the output gear is sleeved on the first bearing and meshed with the input gear assembly.
5. The power take-off of claim 4, wherein said output shaft is provided with splines thereon and said output gear is provided with openings thereon, said shift assembly further comprising:
the spline sleeve is sleeved on the outer side of the push rod;
the lock pin penetrates through the spline sleeve along the radial direction of the push rod and is connected with 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.
6. The power take-off of claim 5, 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.
7. The power takeoff of claim 4, further comprising:
the output shaft cover is connected with the shell and sleeved outside the output shaft;
and the third sealing ring is clamped on the output shaft cover, and the inner ring of the third sealing ring is in contact with the output shaft.
8. The power take-off of any one of claims 1 to 7, wherein the shift assembly further comprises:
the connecting piece, the connecting piece with the one end of push rod is connected, and the other end is towards the piston, the other end of connecting piece is globular.
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 |
|---|---|---|---|
| CN201920749738.6U CN210218657U (en) | 2019-05-23 | 2019-05-23 | Power takeoff, gearbox and vehicle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920749738.6U CN210218657U (en) | 2019-05-23 | 2019-05-23 | Power takeoff, gearbox and vehicle |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210218657U true CN210218657U (en) | 2020-03-31 |
Family
ID=69927287
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920749738.6U Active CN210218657U (en) | 2019-05-23 | 2019-05-23 | Power takeoff, gearbox and vehicle |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210218657U (en) |
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2019
- 2019-05-23 CN CN201920749738.6U patent/CN210218657U/en active Active
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