CN210153111U - Power takeoff - Google Patents
Power takeoff Download PDFInfo
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- CN210153111U CN210153111U CN201920739237.XU CN201920739237U CN210153111U CN 210153111 U CN210153111 U CN 210153111U CN 201920739237 U CN201920739237 U CN 201920739237U CN 210153111 U CN210153111 U CN 210153111U
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- shell
- piston
- sliding sleeve
- power takeoff
- driving gear
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Abstract
The utility model discloses a power takeoff, it includes shell, power input subassembly and power output subassembly, and the shell is monolithic structure. The power input assembly comprises a sliding sleeve shaft, a driving gear and a cylinder assembly, wherein the cylinder assembly comprises a piston, a piston rod, a sealing ring arranged on the piston, a plane bearing for connecting the piston and the piston rod, and a spring sleeved on the piston rod; the left part of the sliding sleeve shaft is provided with an internal spline, and the right part of the sliding sleeve shaft is provided with an external spline. The utility model discloses power takeoff, its shell adopt monolithic structure, have eliminated current shell and have had the technical problem of oil leak risk in left and right two shell joint portions. The cylinder, the sliding sleeve shaft and the driving gear are coaxially arranged, the power takeoff is smaller in size, interference with other parts can be avoided during installation, and installation and operation are facilitated. And the driving gear is only provided with one linkage gear, and the helical gear is adopted for transmission, so that the tooth width is larger, the torque transmission capacity is stronger, and the problem that the driving gear of the existing power takeoff is easy to damage due to overload is solved.
Description
Technical Field
The utility model relates to a power takeoff technical field, in particular to gearbox countershaft power takeoff.
Background
The power takeoff is also called a power output device and is used for being connected with a low-gear of the gearbox or an output gear shaft of the auxiliary box and outputting power to an external working device, such as a lifting pump and the like.
In the prior art, as shown in an attached drawing 1 of the specification, a power takeoff matched with a Shilefu 16-gear transmission case has a shell of a split structure and is formed by connecting a left shell 1 and a right shell 2 through bolts, a paper pad seal is arranged at the joint part of the left shell and the right shell, and the split shell causes the power takeoff to have the technical defect risk problem of oil leakage caused by the sealing failure of the paper pad in the use process.
In addition, as shown in the attached drawing 2 of the specification, the conventional power takeoff matched with the power takeoff 16-gear transmission is arranged at the side part of the shell, so that the whole power takeoff occupies a large transverse space, is not compact in structure, and is small in installation space on a vehicle and difficult to install.
In addition, the existing power takeoff matched with the Caeleofu 16-gear transmission adopts a double-gear structure, such as a gear 6 and a gear 7 in fig. 1, and a movable sliding sleeve 4 is matched with a transmission output shaft 5 and the gear 6 to realize gear engagement and disengagement.
SUMMERY OF THE UTILITY MODEL
In view of this, the utility model aims at providing a power takeoff to there is the oil leak risk in solving current power takeoff casing adoption components of a whole that can function independently integrated configuration, the cylinder is arranged and is leaded to power takeoff lateral width to cause greatly that installation space is narrow on the vehicle and the gear carries technical problem such as damage because of the narrower easy year of tooth width at the shell side.
The utility model discloses power takeoff, it includes shell, power input subassembly and power take off subassembly, the shell is monolithic structure, the left side of shell is provided with power input subassembly dress hole, the right side of shell is provided with power take off subassembly dress hole.
Further, the power input assembly comprises a sliding sleeve shaft, a driving gear and a cylinder assembly, and the cylinder assembly comprises a piston, a piston rod, a sealing ring arranged on the piston, a plane bearing for connecting the piston and the piston rod, and a spring sleeved on the piston rod;
the left part of the sliding sleeve shaft is provided with an internal spline, and the right part of the sliding sleeve shaft is provided with an external spline;
the driving gear is arranged on the shell through a bearing, an axial through hole is formed in the middle of the driving gear, and the left side portion of the axial through hole is a spline hole matched with an external spline of the sliding sleeve shaft;
the shell is provided with a cavity in sliding fit with the piston, and the sealing ring is used for sealing a fit clearance between the piston and the cavity; one part of the piston rod penetrates through an axial through hole in the driving gear and is fixedly connected with the sliding sleeve shaft, and the piston rod and the sliding sleeve shaft are coaxially arranged; one end of the spring is propped against the driving gear, and the other end of the spring is propped against the piston rod; the shell is provided with an air inlet hole, the air inlet hole is located on the right side of the piston, and the plane bearing is located on the left side of the piston.
Further, the power output assembly comprises a driven gear arranged on the shell through a bearing, and an internal spline is arranged on the right side of the driven gear.
Further, the power output assembly further comprises an output flange, and an external spline matched with the internal spline on the driven gear is arranged on the left part of the output flange.
Further, the middle part of output flange is provided with the bolt via hole, output flange is through penetrating the bolt and driven gear fixed connection in bolt via hole.
Further, the driving gear is a helical gear.
The utility model has the advantages that:
1. the utility model discloses power takeoff, its shell adopt monolithic structure, for the shell that comprises two half shells on the left and right sides now, it has eliminated current shell and has had the technical problem of oil leak risk in two half shell joint portions on the left and right sides.
2. The utility model discloses power takeoff, its cylinder and sliding sleeve axle and the coaxial arrangement of driving gear, arrange the structure at the shell side for current power takeoff cylinder, the utility model discloses power takeoff's cylinder can not increase power takeoff transverse width, and its volume is littleer for current power takeoff volume, and installation space occupies littleer, can avoid other parts to interfere on the installation rather than the frame when the installation, is more convenient for install the operation.
3. The utility model discloses the power takeoff, its driving gear only allies oneself with the tooth, has two allies oneself with the tooth for current power takeoff driving gear, the utility model discloses the tooth width of power takeoff's driving gear is bigger, and the ability of its transmission moment of torsion is stronger for the power takeoff has bigger moment of torsion output capacity, and then has solved the problem that current power takeoff driving gear damaged because of transshipping easily.
4. The utility model discloses power takeoff, it adopts the skewed tooth transmission, and it is bigger than like power takeoff transmission moment of torsion under the centre-to-centre spacing is the same, and further the problem that the power takeoff became invalid because of transshipping has effectively been solved.
5. The utility model discloses power takeoff, its output have two kinds of output interface modes, one kind is the flange formula, and another kind is direct-connected pump type, and application scope is wide, and the commonality is stronger.
Drawings
FIG. 1 is a cross-sectional view of a prior art power takeoff;
FIG. 2 is a schematic side view of a conventional power takeoff;
FIG. 3 is a front view of the power takeoff of the present invention;
FIG. 4 is a cross-sectional structural view taken along A-A in FIG. 3;
FIG. 5 is a sectional structural view of the casing of the power takeoff of the present invention;
fig. 6 is a three-dimensional structure diagram of the power takeoff of the utility model.
Detailed Description
The invention is further described with reference to the following figures and examples.
As shown, the power take-off in this embodiment comprises a housing 1, a power input assembly and a power output assembly. The shell is of an integral structure and is a part; the left side of shell is provided with power input assembly dress hole 2, the right side of shell is provided with power output assembly dress hole 3. In this embodiment, the casing of the force taking device is of an integral structure, and compared with the existing casing consisting of the left half casing and the right half casing, the force taking device eliminates the technical problem that the existing casing has oil leakage risk at the joint part of the left half casing and the right half casing.
As a modification of the above embodiment, the power input assembly includes a sliding sleeve shaft 4, a driving gear 5 and a cylinder assembly, and the cylinder assembly includes a piston 6, a piston rod 7, a sealing ring 8 disposed on the piston, a plane bearing 9 connecting the piston and the piston rod, and a spring 10 sleeved on the piston rod.
The left part of the sliding sleeve shaft is provided with an internal spline, and the right part of the sliding sleeve shaft is provided with an external spline.
The driving gear is arranged on the shell through a bearing, an axial through hole is formed in the middle of the driving gear, and the left side portion of the axial through hole is a spline hole matched with an external spline of the sliding sleeve shaft.
The shell is provided with a cavity in sliding fit with the piston, and the sealing ring is used for sealing a fit clearance between the piston and the cavity; one part of the piston rod penetrates through an axial through hole in the driving gear and is fixedly connected with the sliding sleeve shaft, and the piston rod and the sliding sleeve shaft are coaxially arranged; one end of the spring is propped against the driving gear, and the other end of the spring is propped against the piston rod; an air inlet hole 11 is formed in the shell, the air inlet hole is located in the right side of the piston, and the plane bearing is located in the left side of the piston.
The power takeoff theory of this embodiment is as follows:
when force is required to be taken, compressed gas enters the cavity on the right side of the piston from the air inlet hole 11, the piston overcomes the thrust of the spring to move leftwards under the action of air pressure, the piston moves leftwards to enable the sliding sleeve shaft to move leftwards, and the sliding sleeve moves leftwards axially to enable the internal spline on the sliding sleeve shaft to be connected with the output shaft of the speed changer, so that the power of the speed changer is transmitted to the sliding sleeve shaft, and the force is taken. The sliding sleeve shaft transmits power to the driving gear through the spline, and the driving gear transmits the power to the power output assembly to realize power output. The plane bearing arranged in the cylinder assembly ensures that the piston rod rotates along with the sliding sleeve shaft in the power taking process, and the piston does not rotate.
When the force taking is not needed, the compressed gas is stopped to be introduced into the cavity on the right side of the piston, at the moment, the piston moves rightwards under the thrust of the spring, the piston moves rightwards so that the sliding sleeve shaft also moves rightwards, and therefore the spline in the sliding sleeve shaft is separated from the output shaft of the speed changer, and the force taking is finished.
In this embodiment, the piston rod and the sliding sleeve shaft are connected through a bolt, so that the assembly and disassembly are convenient, and other connection modes can be adopted in different embodiments.
This improve power takeoff, its cylinder and sliding sleeve axle and driving gear coaxial arrangement for current power takeoff cylinder arranges the structure at the shell side, and this improve power takeoff's cylinder can not increase power takeoff lateral width for the power takeoff structure is compacter, and installation space occupies littleer, is more convenient for install the operation on the vehicle.
And this improve power takeoff, its driving gear only has a antithetical couplet tooth, and for current power takeoff driving gear has two antithetical couplet teeth, the tooth width of this improve power takeoff's driving gear is bigger, and its ability of transmitting the moment of torsion is stronger for the power takeoff has bigger moment of torsion output capacity, and then has solved the problem that current power takeoff driving gear damaged because of transshipping easily.
As a further improvement to the above embodiment, the power output assembly includes a driven gear 12 provided on the housing through a bearing, the right side of the driven gear being provided with an internal spline. In this embodiment, the power output assembly further includes an output flange 13, and an external spline that is engaged with the internal spline of the driven gear is provided on a left portion of the output flange. The driving gear transmits power to the driven gear, and the driven gear transmits the power to each output flange for output. In this embodiment, the middle part of output flange is provided with the bolt via hole, output flange is through penetrating the bolt and driven gear fixed connection in the bolt via hole, output flange's easy dismounting.
This improve power takeoff, its driven gear 12 except can with output flange connection, under the output flange condition of pulling down, driven gear 12 still can be through the direct input shaft with the oil pump of internal spline for the power take off mode of power takeoff is more nimble, the different power take off demands of satisfying the vehicle that can be better.
As an improvement on the above embodiment, in the embodiment, the driving gear and the driven gear of the power takeoff are helical gears, and helical gear transmission is adopted, so that the transmission torque is larger than that of the similar power takeoff under the condition of the same center distance, and the problem that the power takeoff fails due to overload is further effectively solved.
Finally, although the present invention has been described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that the present invention can be modified or replaced by other means without departing from the spirit and scope of the present invention, which should be construed as limited only by the appended claims.
Claims (5)
1. A power takeoff, it includes shell, power input subassembly and power output subassembly, its characterized in that: the shell is of an integral structure, a power input assembly installing hole is formed in the left side of the shell, and a power output assembly installing hole is formed in the right side of the shell;
the power input assembly comprises a sliding sleeve shaft, a driving gear and a cylinder assembly, and the cylinder assembly comprises a piston, a piston rod, a sealing ring arranged on the piston, a plane bearing for connecting the piston and the piston rod, and a spring sleeved on the piston rod;
the left part of the sliding sleeve shaft is provided with an internal spline, and the right part of the sliding sleeve shaft is provided with an external spline;
the driving gear is arranged on the shell through a bearing, an axial through hole is formed in the middle of the driving gear, and the left side portion of the axial through hole is a spline hole matched with an external spline of the sliding sleeve shaft;
the shell is provided with a cavity in sliding fit with the piston, and the sealing ring is used for sealing a fit clearance between the piston and the cavity; one part of the piston rod penetrates through an axial through hole in the driving gear and is fixedly connected with the sliding sleeve shaft, and the piston rod and the sliding sleeve shaft are coaxially arranged; one end of the spring is propped against the driving gear, and the other end of the spring is propped against the piston rod; the shell is provided with an air inlet hole, the air inlet hole is located on the right side of the piston, and the plane bearing is located on the left side of the piston.
2. The power takeoff of claim 1, wherein: the power output assembly comprises a driven gear arranged on the shell through a bearing, and an internal spline is arranged on the right side of the driven gear.
3. The power takeoff of claim 2, wherein: the power output assembly further comprises an output flange, and an external spline matched with the internal spline on the driven gear is arranged on the left part of the output flange.
4. The power takeoff of claim 3, wherein: the middle part of output flange is provided with the bolt via hole, output flange is through penetrating the bolt and driven gear fixed connection in the bolt via hole.
5. The power takeoff of claim 1, wherein: the driving gear is a helical gear.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920739237.XU CN210153111U (en) | 2019-05-22 | 2019-05-22 | Power takeoff |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920739237.XU CN210153111U (en) | 2019-05-22 | 2019-05-22 | Power takeoff |
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| Publication Number | Publication Date |
|---|---|
| CN210153111U true CN210153111U (en) | 2020-03-17 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920739237.XU Active CN210153111U (en) | 2019-05-22 | 2019-05-22 | Power takeoff |
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| CN (1) | CN210153111U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112324886A (en) * | 2020-10-29 | 2021-02-05 | 陕西法士特汽车传动集团有限责任公司 | Double-output integrated power takeoff and using method thereof |
-
2019
- 2019-05-22 CN CN201920739237.XU patent/CN210153111U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112324886A (en) * | 2020-10-29 | 2021-02-05 | 陕西法士特汽车传动集团有限责任公司 | Double-output integrated power takeoff and using method thereof |
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