Gearbox second axleTechnical field
The utility model belongs to gearbox technical field, and concrete is a kind of gearbox second axle.
Background technique
Gearbox is made up of gear and axle, and produce variable-speed torque-converting by different Gear combination, its function mainly contains:
1, velocity ratio is changed;
2, in the constant situation of hand engine rotation, automobile can be fallen back traveling;
3, utilize neutral, interrupt transmission of power, to start to enable motor, idling, and be convenient to shifting of transmission or carry out Power output.
Gearbox second axle is used for the Power output after gearbox variable-speed torque-converting to transmission paries such as differential mechanisms, second axle is generally set with and multiple output gear of its rotatable engagement and the sleeve with its synchronous axial system, engages to select different speed ratios by sleeve and different output gears.Although existing gearbox second axle can meet usage requirement to a certain extent, still there is the defect of greasy property deficiency.
Summary of the invention
In view of this, the purpose of this utility model is to provide a kind of gearbox second axle, effectively can improve lubrication effect, improves working life.
For achieving the above object, the utility model provides following technological scheme:
A kind of gearbox second axle, comprise axle body, one end of described axle body is provided with termination, location and spline, the other end is provided with driving gear, the end face that described axle body is provided with driving gear one end is provided with end face positioning hole, and the end face that described axle body is provided with spline one end is provided with axial oilhole, the other end of described axial oilhole is connected with described end face positioning hole; Between described axial oilhole and described spline, compartment of terrain is provided with at least one group of radial direction oil hole I, and the sidewall of described axial oilhole is also provided with the radial direction oil hole II be positioned on rear side of described spline.
Further, described radial direction oil hole I is set to two groups.
Further, described radial direction oil hole II uniform setting ringwise.
Further, described driving gear comprises the path section that is positioned at end and is positioned at towards the large footpath section of described spline side.
Further, one end of all gear teeth of described driving gear described spline dorsad is equipped with the arc envelope face formed by circular arc chamfering.
Further, the external diameter in described arc envelope face reduces gradually along the radially outer direction of described axle body.
Further, seamlessly transit between described arc envelope face with the bi-side of the corresponding described gear teeth.
Further, the symmetrical line in described arc envelope face is the oblique line of inclination relative to the axis of described axle body.
Further, the angle between the symmetrical line in described arc envelope face and the axis of described axle body is 80 °.
The beneficial effects of the utility model are:
Gearbox second axle of the present utility model, by arranging axial oilhole, and compartment of terrain arranges radial direction oil hole I and be also provided with the radial direction oil hole II be positioned on rear side of spline on the sidewall of axial oilhole between axial oilhole and spline, the effectively lubricating to spline can be realized, reduce the wearing and tearing of spline, improve working life.
By arranging the arc envelope face formed by circular arc chamfering in the end of driving gear, when driving gear engages with other gear structure engage a gears, due to the existence in this arc envelope face, even if driving gear and other gear structures are touched, arc envelope face can produce a tangent line component, makes other gear structures along this smooth-going movement in arc envelope face, and finally realize the operation of engage a gear engagement, therefore, by arranging arc envelope face, engage a gear can be made to operate more smooth-going.
Accompanying drawing explanation
In order to make the purpose of this utility model, technological scheme and beneficial effect clearly, the utility model provides following accompanying drawing to be described:
Fig. 1 is the structural representation of the utility model gearbox second axle embodiment;
Fig. 2 is the A-A sectional drawing of Fig. 1;
Fig. 3 is the B detail drawing of Fig. 1;
Fig. 4 is the C-C sectional drawing of Fig. 3.
Embodiment
Below in conjunction with the drawings and specific embodiments, the utility model is described in further detail, and to make those skilled in the art better can understand the utility model being implemented, but illustrated embodiment is not as to restriction of the present utility model.
As shown in Figure 1, be the structural representation of the utility model gearbox second axle embodiment.Gearbox second axle of the present embodiment, comprise axle body 1, one end of described axle body 1 is provided with termination 2, location and spline 3, the other end is provided with driving gear 4, the end face that described axle body 1 is provided with driving gear 4 one end is provided with end face positioning hole 5, and the end face that described axle body 1 is provided with spline 3 one end is provided with axial oilhole 6, the other end of described axial oilhole 6 is connected with described end face positioning hole 5; Between described axial oilhole 6 and described spline 3, compartment of terrain is provided with at least one group of radial direction oil hole I 7, and the sidewall of described axial oilhole 6 is also provided with the radial direction oil hole II 8 be positioned on rear side of described spline 3.The radial direction oil hole I 7 of the present embodiment is set to two groups, and the one group radial direction oil hole I 7 of the present embodiment near termination 2, location is set to 3, and another group radial direction oil hole I 7 is set to 2.The described radial direction oil hole II 8 uniform setting ringwise of the present embodiment, and be set to 2.
Gearbox second axle of the present embodiment, by arranging axial oilhole 6, and compartment of terrain arranges radial direction oil hole I 7 and be also provided with the radial direction oil hole II 8 be positioned on rear side of spline on the sidewall of axial oilhole between axial oilhole 6 and spline 3, the effectively lubricating to spline can be realized, reduce the wearing and tearing of spline, improve working life.
Further, driving gear 4 comprises the path section 4a that is positioned at end and is positioned at towards the large footpath section 4b of described spline 3 side.One end of all gear teeth of described driving gear 4 described spline 3 dorsad is equipped with the arc envelope face 9 formed by circular arc chamfering.The external diameter in the arc envelope face 9 of the present embodiment reduces gradually along the radially outer direction of described axle body 1, and seamlessly transits between arc envelope face 9 with the bi-side of the corresponding described gear teeth, reduces bite further, increases stationarity.The symmetrical line 10 in the described arc envelope face 9 of the present embodiment is the oblique line of inclination relative to the axis of described axle body, and the angle between the axis of the symmetrical line 10 in described arc envelope face and described axle body 1 is 80 °.
By arranging the arc envelope face 9 formed by circular arc chamfering in the end of driving gear 4, when driving gear 4 engages with other gear structure engage a gears, due to the existence in this arc envelope face 9, even if driving gear 4 and other gear structures are touched, arc envelope face can produce a tangent line component, makes other gear structures along this smooth-going movement in arc envelope face, and finally realize the operation of engage a gear engagement, therefore, by arranging arc envelope face, engage a gear can be made to operate more smooth-going.
The axle body 1 of the present embodiment is also provided with the carbonitrided case that the degree of depth is 0.65mm, effectively can increases surface strength and the wear-resisting property of axle body 1.
The above embodiment is only for absolutely proving the preferred embodiment that the utility model is lifted, and protection domain of the present utility model is not limited thereto.The equivalent alternative or conversion that those skilled in the art do on the utility model basis, all within protection domain of the present utility model.Protection domain of the present utility model is as the criterion with claims.