CN201162805Y

CN201162805Y - Novel power shunting main reducing gear

Info

Publication number: CN201162805Y
Application number: CNU2008200170642U
Authority: CN
Inventors: 曲章范; 白福贵
Original assignee: FAW SHANDONG SPECIAL AUTOMOBILE WORKS
Current assignee: Shandong Pengxiang Automobile Co Ltd
Priority date: 2008-01-25
Filing date: 2008-01-25
Publication date: 2008-12-10
Anticipated expiration: 2018-01-25

Abstract

The utility model discloses a novel impetus diversion main reducer, which comprises a reducer shell assembly (1); a differential assembly (16) is arranged under the reducer shell assembly (1). The main reducer is characterized in that the differential assembly (16) is provided with a driven gear I (13) and a driven gear II (15); a regulating ring (14) is arranged between the driven gear I (13) and the driven gear II (15); the reducer shell assembly (1) is provided with a driving gear I (11) and a driving gear II (2); the driven gear I (13) is meshed with the driving gear I (11); the driven gear II (15) is meshed with the driving gear II (2); the driving gear I (11) is provided with a driving cylindrical gear (7); and the driving gear II (2) is provided with a driven cylindrical gear (4). The structure can greatly improve the bearing capacity of the main reducer; compared with the single-stage reducer, the ground clearance is greatly improved under the condition of the same torque; compared with the double-stage reducer, the wheel-side reducer is eliminated, the production cost is greatly reduced, and the fuel consumption and noise are lowered.

Description

A kind of new type power shunting main reducing gear

Technical field:

The utility model relates to wheeled vehicle ransaxle technical field, is a kind of dynamic branch main reducing gear of novel wheeled vehicle ransaxle specifically.

Background technique:

Along with developing of automobile industry, in, heavy truck enters high-speed development period, corresponding driving bridge demand also increases thereupon, the ransaxle of big output torque becomes the target of demand, but common single-stage reduction axle is in order to satisfy required output torque, can only increase the diameter of driven gear, cause the diameter of driven gear all very big like this, it is no problem that such vehicle bridge highway transport car uses, but just can't use owing to the less ground Clearance as engineering vehicle, can only adopt the double reduction bridge that has wheel reductor, though increased the ground Clearance owing to have the double reduction bridge of wheel reductor, but have the cost height, transmission efficiency is low, noise is big, the wheel limit is problem such as heating and oil consumption height easily.

In the double reduction device of common in addition single reduction gear and hub reduction, have during the engagement of driving gear and driven gear along differential axle to responsive to axial force, during heavy duty axial deformation big, influence normal engaged between the flank of tooth, limit the bearing capacity of gear, thereby limited the moment of torsion that transmits; In addition, in order to bear the axial force of gear, differential mechanism is connected the flange plate that the band stiffening rib also will be arranged with driven gear, in order to arrange stiffening rib and to guarantee enough support stiffnesses, causes two bearing distances of differential mechanism bigger, is unfavorable for that integral rigidity improves.

Summary of the invention:

The purpose of this utility model is the deficiency that overcomes above-mentioned prior art, and provide a kind of compact structure, the main reducing gear with dynamic branch structure that bearing capacity is high mainly solves problems such as little, double reduction device of existing single reduction gear ground Clearance need increase wheel reductor, cost of production height, oil consumption and noise is big, bearing capacity is low.

In order to achieve the above object, the utility model is achieved in that a kind of new type power shunting main reducing gear, it comprises reducer shell assembly 1, establish retarder cap 5 on the reducer shell assembly 1, divide into differential assembly 16 at reducer shell assembly 1, its special way is to establish driven gear I 13 and driven gear II 15 on differential assembly 16, two driven gears are gear independently, except that rotation direction on the contrary, other parameter is identical, driven gear can be along the differential axle bobbin to moving, the assurance axial force is identical, make power distribution even, between driven gear I 13 and driven gear II 15, establish and adjust ring 14, on reducer shell assembly 1, establish driving gear I 11 and driving gear II 2, driven gear I 13 is meshed with driving gear I 11, driven gear II 15 is meshed with driving gear II 2, on driving gear I 11 and driving gear II 2, establish driving gear I bearing support assembly 10 and driving gear II bearing support assembly 3 respectively, rear end at driving gear I 11 and driving gear II 2 is established driving gear rear bearing 12 respectively, on the gear shaft of the interior outer bearing front portion of driving gear I 11, establish initiatively cylindrical gears 7, on the gear shaft of the interior outer bearing front portion of driving gear II 2, establish driven cylindrical gear 4, initiatively cylindrical gears 7 and driven cylindrical gear 4 are meshed, establish driving gear II locking nut 6 on the top of driving gear II 2, the top of driving gear I 11 is connected with input flange 9 by ball bearing 8.

A kind of new type power shunting main reducing gear of the present utility model, its described driving gear I 11 and driving gear II 2 numbers of teeth equate that the driven gear I 13 and driven gear II 15 numbers of teeth equate that initiatively cylindrical gears 7 and driven cylindrical gear 4 velocity ratios are 1: 1.

A kind of new type power shunting main reducing gear of the present utility model, its described cylindrical gears is a helical gear.

A kind of new type power shunting main reducing gear of the present utility model, the adjustment pad is established at its described driving gear II bearing support assembly 3 and driving gear I bearing support assembly 10 positions respectively.

A kind of new type power shunting main reducing gear of the present utility model, its described differential assembly 16 comprises differential casing, establishes cross axle on differential casing, establishes planetary pinion on cross axle, planetary pinion and differential gear engagement; Described differential casing is the branch body structure at the cross axle place.

A kind of new type power shunting main reducing gear of the present utility model is two covers main driven gears arranged side by side, wherein two driven gear engagements that the equal driving gear of the number of teeth equates with two numbers of teeth respectively, two cylindrical gears engagements are arranged respectively on two driving gear shafts, and these two cylindrical gears numbers of teeth equate to use as the dynamic branch gear.Power is given another driving gear by cylindrical gears with identical power distribution after inputing to a driving gear, and so latter two driving gear is given the driven gear that is engaged with identical power distribution, by driven gear power is exported jointly.

Compared with the prior art a kind of new type power shunting main reducing gear of the present utility model has following good effect: 1, install dorsad owing to driven gear, its axial force that is subjected to is cancelled each other, avoid the unbalanced problem of driven gear axial force in the existing main reducing gear, thereby avoid heavy duty to be out of shape the engagement problem of bringing down; 2, two cover main driven gears are worked simultaneously, improve output torque greatly, satisfy the requirement of big output torque; 3, the axial force of driven gear both sides offsets, and does not need to arrange the flange plate and the stiffening rib of carrying axial force, makes the differential bearing hypotelorism, has improved support stiffness, makes structure more compact, has improved the integrated carrying ability; 4, the main reducing gear with dynamic branch structure that is applicable to ransaxle can increase output torque in limited space several times, thereby guarantees to replace the wheel reductor bridge under the prerequisite of enough ground Clearances, reduces cost, and reduces oil consumption.

Description of drawings:

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

Embodiment:

In order to understand better and to implement to provide a kind of new type power shunting of specific embodiment detailed description the utility model main reducing gear below in conjunction with accompanying drawing.

Embodiment 1, referring to Fig. 1, be processed into bevel housing assembly 1, retarder cap 5 is arranged on the reducer shell assembly 1, differential assembly 16 is installed on the bevel housing assembly 1, differential assembly 16 comprises differential casing, cross axle is arranged on differential casing, planetary pinion is installed on cross axle, planetary pinion and differential gear engagement, differential casing is the branch body structure at the cross axle place, driven gear I 13 and driven gear II 15 are enclosed within on the differential casing by internal spline with being slidingly matched, driven gear I 13 and driven gear II 15 install dorsad, two driven gears are given differential casing by spline with power transmission, two driven gears are gear independently, unaffectedly be convenient to assembling and adjust, except that rotation direction on the contrary, other parameter is identical, driven gear can be along the differential axle bobbin to moving, the assurance axial force is identical, make power distribution even, between driven gear I 13 and driven gear II 15, install and adjust ring 14, driving gear I 11 and driving gear II 2 are installed on reducer shell assembly 1, driving gear I 11 equates with driving gear II 2 numbers of teeth, two driving gears are the horseback riding type supporting, gear support rigidity is big, improve gear capacity, driving gear I 11 and driven gear I 13 engagements, driving gear II 2 and driven gear II 15 engagements, driving gear I bearing support assembly 10 and driving gear II bearing support assembly 3 are installed respectively on driving gear I 11 and driving gear II 2, at driving gear II bearing support assembly 3 and driving gear I bearing support assembly 10 positions the adjustment pad is installed respectively, rear end at driving gear I 11 and driving gear II 2 is installed driving gear rear bearing 12 respectively, on the gear shaft of the interior outer bearing front portion of driving gear I 11, initiatively cylindrical gears 7 is installed by spline, on the gear shaft of the interior outer bearing front portion of driving gear II 2, driven cylindrical gear 4 is installed by spline, initiatively cylindrical gears 7 and driven cylindrical gear 4 are meshed, the two velocity ratio is 1: 1, cylindrical gears is a helical gear, except that rotation direction on the contrary, other parameter is identical, on the top of driving gear II 2 driving gear II locking nut 6 is installed, ball bearing 8 is passed through on the top of driving gear I 11 be connected with input flange 9.

A kind of new type power shunting main reducing gear described in the utility model, during work, power is imported by driving gear I, shunt to driven cylindrical gear by 1: 1 active cylindrical gears of velocity ratio, power process driving gear I and driven gear I and driving gear II and driven gear II engagement are pooled on the differential carrier like this, in the axial direction owing to be slidingly matched, the axial position of driven gear I and driven gear II is to determine automatically with two driving gear engagements at the same time, can do a spot of play by the differential assembly axis and adjust two cover transmission burden apportionments, two cover transmission loads are equated, thereby make driven gear I and driven gear II axial force equate to reach balance, thereby guaranteed that two cover transmission load distribution are even, for the gear that makes two cover transmission branch chain can both correct engagement, can be by adding adjustment pad adjustment driving gear I and driving gear II axial location at driving gear II bearing support assembly and driving gear I bearing support assembly position, and, output power by the cross axle planet gear meshed on the differential casing at last by between driven gear I and driven gear II, adding the correct engagement of adjusting ring adjustment driven gear I and driven gear II axial position assurance two cover transmission branch chain.

Claims

1, a kind of new type power shunting main reducing gear, it comprises reducer shell assembly (1), establish retarder cap (5) on the reducer shell assembly (1), divide into differential assembly (16) at reducer shell assembly (1), it is characterized in that on differential assembly (16), establishing driven gear I (13) and driven gear II (15), between driven gear I (13) and driven gear II (15), establish and adjust ring (14), on reducer shell assembly (1), establish driving gear I (11) and driving gear II (2), driven gear I (13) is meshed with driving gear I (11), driven gear II (15) is meshed with driving gear II (2), on driving gear I (11) and driving gear II (2), establish driving gear I bearing support assembly (10) and driving gear II bearing support assembly (3) respectively, rear end at driving gear I (11) and driving gear II (2) is established driving gear rear bearing (12) respectively, on the gear shaft of the interior outer bearing front portion of driving gear I (11), establish initiatively cylindrical gears (7), on the gear shaft of the interior outer bearing front portion of driving gear II (2), establish driven cylindrical gear (4), initiatively cylindrical gears (7) and driven cylindrical gear (4) are meshed, establish driving gear II locking nut (6) on the top of driving gear II (2), the top of driving gear I (11) is connected with input flange (9) by ball bearing (8).

2, a kind of new type power shunting main reducing gear according to claim 1, it is characterized in that the described driving gear I (11) and driving gear II (2) number of teeth equate, the driven gear I (13) and driven gear II (15) number of teeth equate that initiatively cylindrical gears (7) and driven cylindrical gear (4) velocity ratio are 1: 1.

3, a kind of new type power shunting main reducing gear according to claim 1 and 2 is characterized in that described cylindrical gears is a helical gear.

4, a kind of new type power shunting main reducing gear according to claim 1 is characterized in that described driving gear II bearing support assembly (3) and driving gear I bearing support assembly (10) position establish the adjustment pad respectively.

5, a kind of new type power shunting main reducing gear according to claim 1, it is characterized in that described differential assembly (16) comprises differential casing, on differential casing, establish cross axle, on cross axle, establish planetary pinion, planetary pinion and differential gear engagement.

6, a kind of new type power shunting main reducing gear according to claim 5 is characterized in that described differential casing is the branch body structure at the cross axle place.