CN105216618A - Propeller-shaft midship mounting bracket assembly - Google Patents

Abstract

Propeller-shaft midship mounting bracket assembly, comprise Rubber Parts, bearing seat, oil sealing, radial ball bearing be the non-maintaining bearing of double-sided oil seal, castellated shaft, oil nozzle, flange, Rubber Parts sulfuration is on bearing seat; Radial ball bearing is contained in bearing seat, and oil sealing is equipped with at bearing seat two ends, and the outer ring of radial ball bearing and bearing seat are free-running fit; The inner ring of radial ball bearing and spline axle journal are that interference fit is connected, and the spline position of flange and castellated shaft is that interference fit is connected, and the inner end surface of flange carries out spacing to the inner ring of radial ball bearing; The spline position of castellated shaft is provided with oil groove vertically, and flange is provided with oil hole and castellated shaft oil groove UNICOM, and oil nozzle is arranged on oil hole, and castellated shaft oil groove communicates with the fuel feed hole of the inner ring of radial ball bearing; The invention solves driving-shaft assembly frictional heat, shake, abnormal sound, problem that the tween drive spindle assembly failure frequency is higher when High Rotation Speed.

Description

Propeller-shaft midship mounting bracket assembly

Technical field

The present invention relates to propeller-shaft field, especially a kind of new automobile transmission shaft midship mounting bracket assembly.

Background technology

Present whole heavy-duty commercial vehicle is towards the future development of high precision, high-quality, the "three guarantees" mileage of car load by original one year, 100,000 kilometers be promoted to 3 years, 300,000 kilometers, this just requires the driving-shaft assembly manufacturing high-quality: 1. will have failure-free transmitting torque; 2. enough strength at repeated alternations to be had; 3. the service life of overlength will be had; The demand for development of car load high precision, high-quality is met with this.

Existing heavy goods vehicles driving-shaft assembly in car load use procedure, particularly intermediate transmission axle assembly:

1, the old-fashioned midship mounting carrier structure that bearing inner ring slides, outer ring is fixing: during transmission shaft High Rotation Speed, castellated shaft neck rubs mutually with bearing inner ring, cause castellated shaft periphery very easily to wear and tear, spline axle portion cylindrical and bearing bore diameter produce gap, cause the problem that transmission shaft is shaken;

2, the old-fashioned midship mounting carrier structure that bearing inner ring, outer ring are simultaneously fixing: car load is when startup and high speed emergency brake, forward pass has frequently back and forth longitudinal travel, cause the bearing axially loaded in midship mounting assembly, bearing very easily damages, and causes driving-shaft assembly to be shaken;

3, bearing self is without oil sealing, lubricates insufficient: after car load travels a period of time, and the bearing in midship mounting easily enters impurity, and non lubricant oil causes bearing friction heat-dissipating very easily to be worn and torn;

Above situation causes driving-shaft assembly frictional heat, shake, abnormal sound, problem that the tween drive spindle assembly failure frequency is higher when High Rotation Speed, three to guarantee to pay compensations expense larger, in the case, a kind of novel midship mounting bracket assembly must be adopted could to meet the operating needs of car load.

Summary of the invention

The invention provides a kind of propeller-shaft midship mounting bracket assembly, its objective is to solve: vehicle driving shaft assembly is frictional heat, shake, abnormal sound, problem that the tween drive spindle assembly failure frequency is higher when High Rotation Speed, and good lubrication can be provided and improve the efficiency of assembling of car load.

In order to solve the problems of the technologies described above, technical solution of the present invention is: propeller-shaft midship mounting bracket assembly, comprises Rubber Parts, bearing seat, oil sealing, radial ball bearing, castellated shaft, oil nozzle, flange, and Rubber Parts sulfuration is on bearing seat;

It is characterized in that:

(1) described radial ball bearing is the non-maintaining bearing of double-sided oil seal;

(2) radial ball bearing is contained in bearing seat, and oil sealing is equipped with at bearing seat two ends, and the outer ring of radial ball bearing and bearing seat are free-running fit (can slide axially);

(3) inner ring of radial ball bearing and spline axle journal are that interference fit is connected, and the spline position of flange and castellated shaft is that interference fit is connected, and the inner end surface of flange carries out spacing (bearing bore diameter is fixed) the inner ring of radial ball bearing; The spline position of castellated shaft is provided with oil groove vertically, and flange is provided with oil hole and castellated shaft oil groove UNICOM, and oil nozzle is arranged on oil hole, and castellated shaft oil groove communicates with the fuel feed hole of the inner ring of radial ball bearing;

(4) grease is after bearing cavity fills, and overflowed by the oil sealing cutting edge of the non-maintaining bearing of double-sided oil seal, the grease of spilling is to bearing seat inner chamber;

(5) radial ball bearing internal diameter is fixed, external diameter can slide axially in bearing seat, be conducive to tween drive spindle general assembly car load, improve the efficiency of assembling (during tween drive spindle assembling car load, middle suspension bracket place nut can be directly urgent, do not need adjustment) of main engine plants' car load.

Beneficial effect: the present invention has the following advantages:

1, radial ball bearing internal diameter is fixed, and avoids spline journal wear during driving-shaft assembly High Rotation Speed;

2, radial ball bearing is the non-maintaining bearing of double-sided oil seal, ensure there is grease all the time in bearing, and the impurity in midship mounting can not enter Bearing inner;

3, bearing seat inner chamber has grease, ensures that outside race is free to slide, avoids axial force, frictional heat, pays for the expense frequency, and can provide good lubrication to reduce driving-shaft assembly inefficacy;

4, bearing bore diameter is fixed, external diameter can slide axially in bearing seat, is conducive to tween drive spindle general assembly car load, improves the efficiency of assembling of car load;

Summary, effect of the present invention: solve driving-shaft assembly frictional heat, shake, abnormal sound, problem that the tween drive spindle assembly failure frequency is higher when High Rotation Speed, and good lubrication can be ensured and the efficiency of assembling of car load can be improved.

Accompanying drawing explanation

Fig. 1 is technical solution of the present invention structural representation.

Fig. 2 be in Fig. 1 A-A to structural representation.

Fig. 3 is assembling schematic diagram of the present invention.

Detailed description of the invention

As shown in Figure 1 and Figure 2, propeller-shaft midship mounting bracket assembly:

1., its part is: the sulfuration of Rubber Parts bearing seat 3(Rubber Parts is on bearing seat 7), two ends oil sealing 5, radial ball bearing 4, castellated shaft 6, flange 1, oil nozzle 2, radial ball bearing 4 is the non-maintaining bearings of double-sided oil seal.

2., fitting process:

First radial ball bearing 4 is loaded in bearing seat, two oil sealings 5 are pressed into respectively Rubber Parts bearing seat 3 two ends (being a branch unit after assembling), secondly castellated shaft small end is placed on press fixture through oil sealing 5 and radial ball bearing 4, flange small end is placed on castellated shaft small end place, and is alignd with castellated shaft oil groove in oil nozzle position, then be pressed in castellated shaft by flange, load onto alemite, last urgent nut completes.

3., oiling process:

First high-pressure grease enters in flange 1 oilhole from oil nozzle 2, then enter in castellated shaft 6 oil groove, again enter bearing cavity by bearing 4 internal diameter oilhole, bearing 4 inner chamber grease is full of rear spilling and enters bearing seat inner chamber, lubricating bearings outer ring, unnecessary grease overflows from the oil sealing 5 at two ends.

As indicated at 3, the propeller-shaft midship mounting bracket assembly C shown in Fig. 1 and Fig. 2 and central siphon 9, universal joint cross 10 form intermediate transmission axle assembly.

Claims (1)

1. propeller-shaft midship mounting bracket assembly: comprise Rubber Parts, bearing seat, radial ball bearing, oil sealing, castellated shaft, oil nozzle, flange, Rubber Parts sulfuration is on bearing seat;

It is characterized in that:

(1) described radial ball bearing is the non-maintaining bearing of double-sided oil seal;

(2) radial ball bearing is contained in bearing seat, and oil sealing is equipped with at bearing seat two ends, and the outer ring of radial ball bearing and bearing seat are free-running fit (can slide axially);

(3) inner ring of radial ball bearing and spline axle journal are that interference fit is connected, and the spline position of flange and castellated shaft is that interference fit is connected, and the inner end surface of flange carries out spacing to the inner ring of radial ball bearing; The spline position of castellated shaft is provided with oil groove vertically, and flange is provided with oil hole and castellated shaft oil groove UNICOM, and oil nozzle is arranged on oil hole, and castellated shaft oil groove communicates with the fuel feed hole of the inner ring of radial ball bearing;

(4) grease is after bearing cavity fills, and overflowed by the oil sealing cutting edge of the non-maintaining bearing of double-sided oil seal, the grease of spilling is to bearing seat inner chamber;

(5) radial ball bearing internal diameter is fixed, external diameter can slide axially in bearing seat.