CN205292284U - Assembly easy maintenance's axle reduction gear - Google Patents

Abstract

The utility model provides an assembly easy maintenance's axle reduction gear, related of the equipment link that had solved the existence of current traditional axle reduction gear is many, influence equipment quality, efficiency, and the difficult scheduling problem of field maintenance, including the reductor body, power input shaft bearing structure, axle casing, semi -axis, differential mechanism and driven gear, its technical essential is: power input shaft bearing structure is listed as the bearing that the outer loop structure is the same by two, and fastening support bearing's input torque flange and lock nut constitute, the outer loop equipment of two bearings is downthehole in the bearing assembly of the same internal diameter of the reductor body, and the inner ring passes through the input torque flange and the lock nut fastening is supported on the corresponding diameter of axle of driving tooth shaft. Its structure is simplified, reasonable in design, and assembly, field maintenance convenient operation eliminate the instability that reduction gear bearing assembly pretension and play variation were brought effectively, are showing the vibration noise, the rotating resistance that improve the bearing assembly precision and reduce power input shaft bearing structure, extension reduction gear life.

Description

Assemble vehicle bridge decelerator easy to maintenance

Technical field

This utility model relates to a kind of automotive trannsmission system, particularly a kind of for making assembling that driving force is transferred to front-wheel or trailing wheel vehicle bridge decelerator easy to maintenance.

Background technology

In the face of low emission environmental requirement, in recent years domestic minicar, light bus and the quality pressure of imported car competition, chassis drive the lifting of life-span and noise and transmission efficiency (decelerator noise and quality guarantee cycle) etc. require more and more stronger; Namely bearing and gear are used superior (lower resistance), improve gear and bearing assembly precision, be finally reached and extend bearing service life and reduce the vibrating noise that driving gear shaft supports. Domestic corporation is the upgrading of leading technique on core members gear, is just solving gear upgrading; Correspondingly domestic vehicle bridge decelerator assembles the upgrading of quality systematicness, is also faced with the pressure for upgrading that another core members bearing (play and pretension) assembles the craft precision of concordance and the manufacture of key component reducer shell, it is necessary to structure updating carrys out hasty breaching.

According to Patents, notification number is " a kind of automobile main reducer assembly " of CN203730712U, is disclosed that the single reduction gear of a kind of automobile driving axle (vehicle bridge); Notification number is also be the single reduction gear of a kind of automobile driving axle (vehicle bridge) disclosed in " automobile main reducer " of CN201255226Y; Publication number is the single reduction gear that " a kind of front speed reducer assembly of micro-car " of CN101220850A is disclosed that a kind of automobile front drive moving axis.

The power input shaft supporting construction of above-mentioned car deceleration device is all by by the driving gear shaft of spline engagement and input torque flange, utilizes pretension play adjusting sleeve between two row separate bearings, bearing (or separating set), adjusts multiple association part such as pad and locking nut and be assembled together with reducer shell. Namely reducing gearbox intracoelomic cavity is provided with the mutually different bearing pilot hole of internal diameter, outer race positions support by the two of housing limiting stands corresponding with the external diameter of outer race, bearing inner ring by adjusting sleeve (or separate set), input torque flange with nut fastening support on the diameter of axle that the internal diameter with bearing inner ring of driving gear shaft is corresponding. Due to the bearing pilot hole that two internal diameters of processing housing cavity are different, the requirement of axiality is higher, outer race is positioned two limiting stands of support and bearing inner ring positions the cooperating of the part such as adjusting sleeve (or separate set) of support by housing, it is all the key component directly affecting bearing assembly pretightening and play stability, so the design of above-mentioned power input shaft supporting construction cannot meet vehicle bridge decelerator and assemble the requirement of quality upgrading. Because its two row separate bearings fastening play is higher to assembly technology and equipment choice, therefore require that decelerator assembling and manufacturing shop process equipment precision are substantially consistent with the bearing group reload request of bearing mnanufacture industry, therefore, the problem defining overlapping investment high precise equipment. If decelerator assembles, the precision of process equipment does not all catch up with the lifting speed of bearing accuracy, then assembling quality, efficiency are subjected to impact, it is difficult to alleviate decelerator and assemble the pressure for upgrading of quality.

The power input shaft supporting construction of tradition decelerator, if without special assembly equipment and experienced commissioning staff, then just cannot assemble out lower resistance and bearing pre-tightened play close to the higher decelerator of the assembling quality of " 0 ".For guaranteeing the stability of bearing assembly pretightening and play, bearing clearance also needs to carry out secondary allotment when decelerator assembles, and the disposable input of high precise equipment assembling this decelerator is also bigger. Meanwhile, by the restriction of the power input shaft supporting construction on reducer shell, the field maintenance of decelerator, only change and return factory, could realize recovering original assembly performance (bearing pre-tightened play amount), bring very big difficulty to field maintenance.

Utility model content

The purpose of this utility model is to provide a kind of assembles vehicle bridge decelerator easy to maintenance, the assembling link association part solving existing tradition vehicle bridge decelerator existence is many, affect assembling quality, efficiency, the problems such as field maintenance difficulty, its structure simplifies, reasonable in design, assembling, field maintenance easy to operate, effectively eliminate reducer shaft to hold assembly pretightening and play and be deteriorated the unstability brought, significantly improve bearing assembly precision and reduce the vibrating noise of power input shaft supporting construction, rotational resistance, prolonged deceleration device service life.

The technical solution adopted in the utility model is: this assembling vehicle bridge decelerator easy to maintenance includes power input shaft supporting construction that reducer shell fits together, vehicle bridge housing, the semiaxis being assembled in axle shell body, differential mechanism and the driven gear engaged with driving gear shaft end gear with reducer shell, it is characterized in that: bearing fastening support input torque flange on driving gear shaft and locking nut by the identical bearing of the two row outer ring structure positioned opposite being assembled together with reducer shell, are constituted by described power input shaft supporting construction; The outer shroud of two row bearings is assembled in the bearing pilot hole of the same internal diameter of reducer shell, and the limiting stand and locating snap ring by reducing gearbox intracoelomic cavity positions support, the internal ring of two row bearings is by the input torque flange and locking nut with driving gear shaft spline engagement, and fastening support is on the diameter of axle that the internal diameter with each bearing inner ring of driving gear shaft is corresponding.

The described driven gear engaged with driving gear shaft end gear is fixedly connected on differential casing, the input torque flange being connected with car load power transmission shaft drives driving gear shaft end gear to rotate, drive differential mechanism and semiaxis to rotate by driven gear, make driving force be transferred to front-wheel or trailing wheel.

This utility model has the advantage that and has the benefit effect that owing to this utility model adopts the bearing identical by the outer ring structure that two row being assembled together with reducer shell are positioned opposite, the power input shaft supporting construction that bearing fastening support input torque flange on driving gear shaft and locking nut are constituted, two row separate bearings on driving gear shaft are made the bearing that outer ring structure is identical, eliminate bearing pre-tightened play adjusting sleeve (or separating set), two limiting stands that outer race positions support on reducer shell are set to one, the bearing making two row positioned opposite is integrated into assembled unit body. after bearing is integrated into assembled unit body, its rolling element can form stable support (realizing the support structure for rotating body that stable precision is high) by outer shroud, internal ring and decelerating casing, so not only making its structure simplify, reasonable in design, assembling, maintenance operation are convenient, and can effectively eliminate main reducing gear bearing assembly pretightening and play is deteriorated the unstability brought. because the outer ring structure of two row bearings is identical, therefore the installing hole of two row bearings on housing can integrate formula elongated hole, it is possible to improves machining accuracy, returns the axiality problem kept away between former two dead eyes. bearing simplifies with bevel housing matching relationship, and the play that manufactures between its two row rolling element is no longer subject to the impact of former reducer power power shaft supporting construction, reduces the play factors of instability, it is easy to realize precision and be substantially improved. so can be achieved with bearing clearance and only manufacture allotment in bearing special manufacturer, when noting be used in main reducing gear assembling, carry out secondary allotment, thus reducing assembling to produce the impact that changed play is big. it is deteriorated owing to assembling and maintenance are no longer necessary to select dress to compensate reducer shell by many specifications bearing pre-tightened play adjusting sleeve (or separating set), only need to press-fit the input torque flange with driving gear shaft spline engagement, locking nut, it is possible to realize bearing assembling to exempt from debugging, enormously simplify the operating procedure steps such as assembling, maintenance, significantly improve bearing assembly precision and reduce the vibrating noise of power input shaft supporting construction, rotational resistance, prolonged deceleration device service life. therefore, the problems such as the assembling link association part that this utility model solves existing tradition vehicle bridge decelerator existence is many, affects assembling quality, efficiency, field maintenance difficulty.

Accompanying drawing explanation

Below in conjunction with accompanying drawing, this utility model is further described.

Fig. 1 is a kind of structural representation of the present utility model;

Fig. 2 is the side view of Fig. 1.

In figure, sequence number illustrates: 1 input torque flange, 2 sealing members, 3 reducer shells, 4 rolling elements, 5 outer shrouds, 6 vehicle bridge housings, 7 differential casings, 8 driven gears, 9 semiaxis, 10 driving gear shafts, 11 internal ring, 12 discs, 13 dust covers, 14 locking nuts.

Detailed description of the invention

Concrete structure of the present utility model is described in detail according to Fig. 1��2. This assembling vehicle bridge decelerator easy to maintenance includes the parts such as power input shaft supporting construction that reducer shell 3 fits together, vehicle bridge housing 6, the semiaxis 9 being assembled in vehicle bridge housing 6, differential mechanism and the driven gear 8 that engages with driving gear shaft 10 end gear with reducer shell 3. Wherein power input shaft supporting construction is by the identical bearing of the outer ring structure positioned opposite with reducer shell 3 is assembled together two row, bearing fastening support input torque flange 1 on driving gear shaft 10, disc 12, dust cover 13 and locking nut 14 etc. is constituted. Each column bearing all includes completely identical in structure outer shroud 5, the discrepant internal ring of the essentially identical internal diameter of structure 11 and completely identical in structure rolling element 4 etc. The present embodiment eliminates the traditional adjusting sleeve between two row bearing inner rings 11 of prior art (or separating set), two limiting stands that outer race 5 positions support of reducer shell 3 inner chamber are only set to one, and the bearing pilot hole at reducer shell 3 is also adopted by the integral type elongated hole of same internal diameter. Therefore, the bearing that two row can be made positioned opposite is integrated into assembled unit body. Outer shroud 5 structure of the two row bearings because being integrated into assembled unit body is identical, therefore can be assembled in the bearing pilot hole of the same internal diameter of reducer shell 3, and the limiting stand and locating snap ring by reducer shell 3 inner chamber positions support. The discrepant internal ring 11 of the essentially identical internal diameter of structure of two row bearings is by the input torque flange 1 and locking nut 14 with driving gear shaft 10 spline engagement, and fastening support is on the diameter of axle that the internal diameter with each bearing inner ring 11 of driving gear shaft 3 is corresponding. The rolling element 4 of the bearing being integrated into assembled unit body can form stable support (realizing the support structure for rotating body that stable precision is high) by outer shroud 5, internal ring 11 with decelerating casing 3. The driven gear 8 engaged with driving gear shaft 10 end gear is fixedly connected on differential casing 7, the input torque flange 1 being connected with car load power transmission shaft drives driving gear shaft 10 end gear to rotate, drive differential mechanism and semiaxis 9 to rotate by driven gear 8, make driving force be transferred to front-wheel or trailing wheel (not shown).

Driving gear shaft 10 is driving force power shaft, it is possible to accept turn clockwise or rotate counterclockwise, and maximum speed is up to 5000 revs/min, and driving force changes the gear stages of transient response automobile engine and variator. The above-mentioned bearing being integrated into assembled unit body, it is deteriorated because assembling and maintenance are no longer necessary to select dress to compensate reducer shell by many specifications bearing pre-tightened play adjusting sleeve (or separating set), therefore be capable of bearing assembling and exempt from debugging, reach to significantly improve bearing assembly precision and reduce the vibrating noise of power input shaft supporting construction, rotational resistance, the purpose in prolonged deceleration device service life.

Claims (2)

1. the vehicle bridge decelerator that an assembling is easy to maintenance, the power input shaft supporting construction that fits together with reducer shell including reducer shell, vehicle bridge housing, the semiaxis being assembled in axle shell body, differential mechanism and the driven gear engaged with driving gear shaft end gear, it is characterized in that: bearing fastening support input torque flange on driving gear shaft and locking nut by the identical bearing of the two row outer ring structure positioned opposite being assembled together with reducer shell, are constituted by described power input shaft supporting construction; The outer shroud of two row bearings is assembled in the bearing pilot hole of the same internal diameter of reducer shell, and the limiting stand and locating snap ring by reducing gearbox intracoelomic cavity positions support, the internal ring of two row bearings is by the input torque flange and locking nut with driving gear shaft spline engagement, and fastening support is on the diameter of axle that the internal diameter with each bearing inner ring of driving gear shaft is corresponding.

2. the vehicle bridge decelerator that assembling according to claim 1 is easy to maintenance, it is characterized in that: the described driven gear engaged with driving gear shaft end gear is fixedly connected on differential casing, the input torque flange being connected with car load power transmission shaft drives driving gear shaft end gear to rotate, drive differential mechanism and semiaxis to rotate by driven gear, make driving force be transferred to front-wheel or trailing wheel.