CN2859086Y

CN2859086Y - Power takeoff

Info

Publication number: CN2859086Y
Application number: CN 200520117430
Authority: CN
Inventors: 顾林华
Original assignee: Individual
Current assignee: Individual
Priority date: 2005-12-21
Filing date: 2005-12-21
Publication date: 2007-01-17
Anticipated expiration: 2015-12-21

Abstract

The present utility model discloses a power take-off. Said power take-off can be compatible with the side output of the Model CA8T150 automatic gearbox. It intends to provide a power take-off with the advantages of good reliability, simple structure, good procesibility and good bearing. It is characterized by that an input gear is installed on the input axle through a bearing, an output gear is installed on the output axle, a shift fork is installed in the declutch shift shaft, said input and output axle are installed on the shell of said power take-off through the bearing, and said declutch shift shaft is also installed on the shell of said power take-off. The connection or disconnection of said input and output axles can be controlled by said shift fork. The normal module and normal profile angle of said input gear is same to that of the side output gear of automatic gearbox and the helix angle of that is reverse to that of the side output gear of automatic gearbox. The output gear is also the bevel gear, the input and output gears often engage, said input gear connects with the input axle through the 32305 or 32206 bearing. In the present utility model, the original twin-gear with skewed tooth and straight tooth is replaced with the bevel gear with single parameter or two equal parameters.

Description

A kind of power take-off

Technical field

The utility model relates to a kind of mechanical device that obtains power and output from automobile gearbox, is more particularly to a kind ofly to export matching used power take-off with CA8T150 type automobile gearbox side.

Background technique

Power take-off be by the gear in the vehicle gear box or pto provide power and outwards output a kind of obtain mechanical device with transferring power.The vehicle operation machine obtains power by power take-off, and being used for other operation becomes special type or special-purpose vehicle, as fire-fighting truck, sprinkling truck, road sweeper, bulk cement truck etc.It is to export from the gear of gearbox to obtain power that matching used power take-off is exported in present and CA8T150 type automobile gearbox side.The input gear of existing power take-off is a doubly-linked gear, Yi Bian be the input gear and the engagement of the helical gear in the automobile gearbox of helical teeth, another side is that the intermediate gear and the output gear of straight-tooth often meshes.Because doubly-linked gear spacing is less, Yi Bian and be that the helical teeth another side is a straight-tooth, helical teeth that work in-process is conjuncted and straight-tooth all can't carry out with gear hobbing and gear shaping, can only process separately usually, and then integrally welded.This technology is made, and the machining accuracy of gear and weld strength all can not guarantee, seriously influence the quality and the working life of power take-off.In addition, input gear and input shaft link together by two 32205 bearings, because the specified dynamic and static load of bearing is all smaller, in actual use, especially bigger working machine load, 32205 bearing premature damage often appear, and owing to the restriction bearing of input gear structure can't strengthen.

Summary of the invention

The purpose of this utility model provides a kind of good reliability, simple in structure, good manufacturability, power take-off that bearing capacity is strong.

In order to overcome the technological scheme that above-mentioned defective adopts be: the input gear is contained on the input shaft by bearing, output gear is contained on the output shaft, shift fork is housed on the declutch shift shaft, input shaft, output shaft by Bearing Installation on the power take-off housing, declutch shift shaft also is installed on the power take-off housing, control the combination of input shaft and outputting axial power or separate by shift fork, the normal module, the normal profile angle that it is characterized in that described input gear are identical with the side direction output gear of automobile gearbox, and helix angle size equidirectional is opposite; Output gear also is a helical gear, and input gear and output gear often mesh.Described input gear and input shaft link together by two 32305 or 32206 bearings.

Change the doubly-linked gear of original helical teeth and straight-tooth into single helical gear according to a kind of power take-off of such scheme manufacturing, promptly spur gear also makes helical gear into, and parameter is identical with original input gear, originally the also corresponding helical gear that makes into of the output gear of straight-tooth.Mainly contain following advantage:

1, cancellation original input gear and intermediate gear welding processing.Improve the quality of processing and the efficient of gear.

2, helical gear compares with spur gear that to have a contact ratio coefficient big, the advantage that the transmission continuity is good and bearing capacity is strong, and the additional axial force that output gear and input gear are produced by the helical gear engagement can be offseted the axial force that former cause input gear and automobile gearbox gear engagement produce, can reduce to act on originally the axial force on the bearing.

3, input is after gear changes single overall gear into, and the intensity of gear ring increases, and bearings mounted aperture can be strengthened, use 32305 bearings or 32206 bearings after, its specified dynamic and static load obviously increases, and has improved the working life of bearing.

Description of drawings

Fig. 1 is the plan view of a kind of automobile with power take-off;

Fig. 2 is the A-A sectional stretch-out view of Fig. 1;

Fig. 3 is the A-A sectional stretch-out view that the input gear of Fig. 1 is made up of two linked gears.

Wherein: 1, input gear; 2, bearing; 3, input shaft; 4, output gear; 5, output shaft; 6, sliding bearing, 7, declutch shift shaft; 8, shift fork; 9, bearing; 10, power take-off housing; 11, sliding sleeve; 12, fork slot; 13, end cap; 14, screw; 15, compression retracteding position spring; 16, flat key; 17, power connects dish.

Embodiment

The utility model will be further described below in conjunction with the drawings and specific embodiments.

Find out from Fig. 1, Fig. 2.A kind of power take-off, input gear 1 is contained on the input shaft 3 by the bearing 2 of its two ends 32305 or 32206, output gear 4 skies are enclosed within on the output shaft 5, sliding bearing 6 is housed therebetween, shift fork 8 is housed on the declutch shift shaft 7, input shaft 3, output shaft 5 are installed on the power take-off housing 10 by bearing 9, and declutch shift shaft 7 also is installed on the power take-off housing 10.Normal module, the normal profile angle of input gear 1 are identical with the side direction output gear of automobile gearbox, and helix angle size equidirectional is opposite; Output gear 4 also is a helical gear, and input gear 1 often meshes with output gear 4.On output shaft 5, be shaped on external splines, also be shaped on the output gear 4 with output shaft 3 on identical external splines, the sliding sleeve 11 of the wounded in the battle keyhole that matches with output shaft 5 external spliness is housed on the output gear 4, be shaped on fork slot 12 on the sliding sleeve 11, shift fork 8 is stuck in the fork slot 12, shift fork 8 is fixed on shift fork 8 in the power take-off housing 10 by declutch shift shaft 7, driving sliding sleeve 11 when mobile shift fork 8 moves axially on output gear 4, when sliding sleeve 11 during not only with the external splines engagement of output gear 4 but also with the external splines engagement of output shaft 5, output gear 4 is passed to sliding sleeve 11 with power, drive output shaft 5 rotations by sliding sleeve 11 again, realize power output; When shift fork 8 made sliding sleeve 11 separate with the external splines of output shaft 5, output gear 4 dallied on output shaft 5, and output shaft 5 is motionless, unpowered output.End face at declutch shift shaft 7 is equipped with end cap 13, on end cap 13, be shaped on screw 14, on can be connected with the pipeline of pressurized air or hydraulic oil, be used for promoting declutch shift shaft 7 and drive shift fork 8, at it compression retracteding position spring 15 is housed oppositely, under the situation of non-compressed air or hydraulic oil input, make shift fork 8 be pressed in position shown in Figure 2, be unpowered output state by compression retracteding position spring 15.Also sliding sleeve 11 can be arranged on the external splines of output shaft 5 according to above-mentioned principle, by the external splines engagement of sliding sleeve 11 to output gear 4, realize the combination of power, just, after adjusting, the axial dimension of corresponding part gets final product the end cap among Fig. 2 13, declutch shift shaft 7 and shift fork 8, the assembling of compression retracteding position spring 15 turnbacks.For making power output and being connected, on output shaft 5, be connected with power and connect dish 17 by flat key 16, working machine can connect with power and coil 17 and be connected and obtain power.Certainly, above-mentioned input gear 1 still can be made up of with helix angle size and the identical gear of direction with the number of teeth with normal profile angle the normal module of two interlocks, wherein one is meshed with automobile gearbox side output gear, another and output gear 4 mesh as shown in Figure 3, and such structure has above-mentioned advantage equally.

Claims

1, a kind of power take-off, the input gear is contained on the input shaft by bearing, output gear is contained on the output shaft, shift fork is housed on the declutch shift shaft, on the power take-off housing, declutch shift shaft also is installed on the power take-off housing by Bearing Installation for input shaft, output shaft, is controlled the combination of input shaft and outputting axial power or is separated by shift fork, the normal module, the normal profile angle that it is characterized in that described input gear are identical with the side direction output gear of automobile gearbox, and helix angle size equidirectional is opposite; Output gear also is a helical gear, and input gear and output gear often mesh.

2, a kind of power take-off according to claim 1 is characterized in that described input gear and input shaft link together by two 32305 or 32206 bearings.

3, a kind of power take-off according to claim 1, it is characterized in that the combination of described input shaft and outputting axial power or separate be by: be shaped on external splines on the output shaft, also be shaped on the output gear with output shaft on identical external splines, the sliding sleeve of the wounded in the battle keyhole that matches with the output shaft external splines is housed on the output gear, be shaped on fork slot on the sliding sleeve, shift fork is stuck in the fork slot, when mobile shift fork, drive to slide on the output gear and move axially, when sliding sleeve during not only with the external splines engagement of output gear but also with the external splines engagement of output shaft, output gear is passed to sliding sleeve with power, drive the output shaft rotation by sliding sleeve again, realize power output; When shift fork made sliding sleeve separate with the external splines of output shaft, output gear dallied on output shaft, and output shaft is motionless, unpowered output.

4, a kind of power take-off according to claim 1, it is characterized in that the combination of described input shaft and outputting axial power or separate be by: be shaped on external splines on the output shaft, also be shaped on the output gear with output shaft on identical external splines, the sliding sleeve of the wounded in the battle keyhole that matches with the output shaft external splines is housed on the output shaft, be shaped on fork slot on the sliding sleeve, shift fork is stuck in the groove, when mobile shift fork, drive to slide on the output shaft and move axially, when sliding sleeve during not only with the external splines engagement of output gear but also with the external splines engagement of output shaft, output gear is passed to sliding sleeve with power, drive the output shaft rotation by sliding sleeve again, realize power output; When shift fork made sliding sleeve separate with the external splines of output gear, output gear dallied on output shaft, and output shaft is motionless, unpowered output.

5, a kind of power take-off according to claim 1 is characterized in that it is that pressurized air or hydraulic oil by the declutch shift shaft end face promotes that described shift fork moves, and by the compression retracteding position spring return.

6, a kind of power take-off according to claim 1 is characterized in that described input gear is made up of with helix angle size and the identical gear of direction with the number of teeth with normal profile angle the normal module of two interlocks.