CN207106166U - A kind of vehicle deceleration transmission system - Google Patents

Abstract

The utility model discloses a vehicle speed reduction transmission system, which comprises a driving motor, a reduction box, a left half shaft and a right half shaft; the box body of the speed reduction box is composed of an upper casing, a middle casing and a lower casing; The front chamber is provided with a parking brake matched with the brake disc; the rear chamber is provided with a helical gear reduction mechanism or a planetary gear reduction mechanism; The bevel gear, the part of the intermediate shaft of the helical gear reduction mechanism or the planetary gear reduction mechanism extends into the middle casing, and the intermediate shaft is provided with a driving bevel gear; the power output shaft of the driving motor is parallel to the longitudinal direction of the vehicle, and the The longitudinal direction is parallel to the longitudinal direction of the vehicle. The drive motor and the reduction box of the present invention are arranged longitudinally, which saves a lot of space, and is beneficial to arrange independent suspensions on both sides of the vehicle chassis in the lateral direction, improving the comfort of the vehicle; the cross transmission shaft is canceled between the drive motor and the reduction box, making the manufacturing The cost is lower.

Description

A vehicle deceleration transmission system

technical field

The utility model relates to a deceleration system, in particular to a vertical reduction transmission structure.

Background technique

The automobile gearbox is arranged between the prime mover and the half shaft to match the speed and transmit the torque. In the prior art, there are two types of gearboxes mounted on fuel vehicles: horizontal gearboxes and longitudinal gearboxes.

Existing fuel vehicles are equipped with a horizontal gearbox, which has the problem of occupying a large horizontal space, which will lead to unreasonable layout of some parts of the vehicle and a lot of space waste. Existing fuel vehicles are equipped with vertical reduction gearboxes, and the engine and the reducer must be connected through a cross transmission shaft, which will increase the manufacturing cost, and at the same time increase the cross transmission shaft will also lead to waste of space.

With the improvement of comfort requirements of consumers, the current automobile chassis basically adopts independent suspension, and the installation of independent suspension needs to occupy more horizontal space. And with the rapid rise of new energy vehicles, how to reasonably set up the transmission system on new energy vehicles to help reduce manufacturing costs and facilitate the layout of independent suspensions is a problem worth studying.

Utility model content

In view of this, the purpose of this utility model is to provide a vehicle deceleration transmission system to solve the problem that the layout structure of the existing automobile deceleration transmission system takes up a lot of space, which is not conducive to the arrangement of components such as independent suspensions, and the gap between the engine and the reduction box. To be connected through the cross transmission shaft, there are problems such as high manufacturing cost.

The vehicle deceleration transmission system of the utility model includes a driving motor, a reduction box, a left half shaft and a right half shaft;

The reduction box includes a box body, and the box body is composed of an upper casing, a middle casing and a lower casing connected by bolts; the middle part of the upper casing is provided with a partition, and the partition divides the inner casing of the upper casing. The lumen is divided into an anterior cavity and a posterior cavity;

The shell of the driving motor is fixedly connected with the upper casing of the box body by bolts, one section of the power output shaft of the driving motor is located in the front cavity, and one section is located in the rear cavity, and the power output shaft of the driving motor is provided with a brake disc. The brake disc is arranged in the front chamber of the upper case, and the upper case is provided with a parking brake matched with the brake disc;

The rear cavity is provided with a helical gear reduction mechanism or a planetary gear reduction mechanism;

The helical gear reduction mechanism includes a driving helical gear fixed on the power output shaft of the drive motor, an intermediate shaft arranged in the rear chamber of the upper housing, a driven helical gear arranged on the middle of the intermediate shaft and meshed with the driving helical gear. gear;

The sun gear in the planetary gear reduction mechanism is fixed on the power output shaft of the drive motor, the ring gear in the planetary gear reduction mechanism is fixed on the rear cavity wall of the upper casing, and the planet carrier in the planetary gear reduction mechanism is provided with intermediate shaft for power output;

A differential is arranged in the middle casing, and a driven bevel gear is arranged on the casing of the differential, and the intermediate shaft part of the helical gear reduction mechanism or the planetary gear reduction mechanism extends into the middle casing, and The intermediate shaft is provided with a driving bevel gear meshed with a driven bevel gear;

The two power output shafts of the differential extend out of the middle casing and are respectively connected with the left half shaft and the right half shaft;

The power output shaft of the driving motor is parallel to the longitudinal direction of the vehicle, and the longitudinal direction of the reduction box is parallel to the longitudinal direction of the vehicle.

The beneficial effects of the utility model:

1. The vehicle deceleration transmission system of the utility model adopts a longitudinal arrangement for the drive motor and the reduction box, thereby reducing the occupation of the lateral space of the vehicle and saving a lot of space, which is conducive to arranging independent suspensions on both lateral sides of the vehicle chassis and improving the vehicle performance. comfort. And in the utility model, the cross transmission shaft is canceled between the driving motor and the reducer, so that the occupation of the longitudinal space of the vehicle by the driving motor and the reduction box is also reduced, which is beneficial to the arrangement of vehicle parts, and the cross transmission shaft is canceled at the same time, which also makes the vehicle lower manufacturing costs.

2. The vehicle deceleration transmission system of the present utility model, by setting the brake disc and the parking brake in the upper housing, the braking operation can also be implemented when the power output shaft of the drive motor rotates at high speed, which can improve the driving safety of the vehicle .

Description of drawings

Fig. 1 is the first structural schematic diagram of the vehicle deceleration transmission system in Embodiment 1;

Fig. 2 is a second structural schematic diagram of the vehicle speed reduction transmission system in the second embodiment.

Detailed ways

Below in conjunction with accompanying drawing and embodiment the utility model is described further.

Embodiment 1: As shown in FIG. 1 , the vehicle deceleration transmission system in this embodiment includes a drive motor 1 , a reduction box 2 , a left half shaft 3 and a right half shaft 4 .

The reduction box includes a box body, and the box body is composed of an upper casing 5, a middle casing 6 and a lower casing 7 connected by bolts; the middle part of the upper casing is provided with a partition 8, and the partition will upper The inner cavity of the housing is divided into a front cavity and a rear cavity.

The shell of the drive motor is fixedly connected with the upper shell of the box by bolts, one section of the power output shaft of the drive motor is located in the front cavity, and one section is located in the rear cavity, and the power output shaft of the drive motor is provided with a brake disc 9 , the brake disc is arranged in the front cavity of the upper housing, and the upper housing is provided with a parking brake 10 matched with the brake disc.

A helical gear reduction mechanism is provided in the rear chamber; the helical gear reduction mechanism includes an active helical gear 11 fixed on the power output shaft of the driving motor, an intermediate shaft 12 arranged in the rear chamber of the upper casing, and an intermediate shaft 12 arranged in the middle The driven helical gear 13 on the middle part of the shaft and meshed with the driving helical gear.

A differential 14 is arranged in the middle casing, and a driven bevel gear 15 is arranged on the casing of the differential, and the part of the intermediate shaft of the helical gear reduction mechanism or the planetary gear reduction mechanism extends into the middle casing , and the intermediate shaft is provided with a driving bevel gear 16 meshed with a driven bevel gear.

The two power output shafts 17 of the differential extend out of the middle housing and are connected with the left half shaft and the right half shaft respectively.

The power output shaft of the driving motor is parallel to the longitudinal direction of the vehicle, and the longitudinal direction of the reduction box is parallel to the longitudinal direction of the vehicle.

Embodiment 2: As shown in FIG. 2 , the vehicle deceleration transmission system in this embodiment includes a drive motor 1 , a reduction box 2 , a left half shaft 3 and a right half shaft 4 .

The reduction box includes a box body, and the box body is composed of an upper casing 5, a middle casing 6 and a lower casing 7 connected by bolts; the middle part of the upper casing is provided with a partition 8, and the partition will upper The inner cavity of the housing is divided into a front cavity and a rear cavity.

The casing of the drive motor is fixedly connected with the upper casing by bolts, one section of the power output shaft of the drive motor is located in the front cavity, and one section is located in the rear cavity, and a brake disc 9 is arranged on the power output shaft of the drive motor. The brake disc is arranged in the front chamber of the upper housing, and the upper housing is provided with a parking brake 10 matched with the brake disc.

A planetary gear reduction mechanism is arranged in the rear chamber; the sun gear 18 in the planetary gear reduction mechanism is fixed on the power output shaft of the drive motor, and the ring gear 19 in the planetary gear reduction mechanism is fixed in the rear chamber of the upper casing On the wall, the planet carrier in the planetary gear reduction mechanism is provided with an intermediate shaft 12 for outputting power.

The middle housing is provided with a differential 14, the housing of the differential is provided with a driven bevel gear 15, the part of the intermediate shaft 12 of the planetary gear reduction mechanism extends into the middle housing, and the intermediate shaft A driving bevel gear 16 meshed with a driven bevel gear is arranged on the top.

The two power output shafts 17 of the differential extend out of the middle housing and are connected with the left half shaft and the right half shaft respectively.

The power output shaft of the driving motor is parallel to the longitudinal direction of the vehicle, and the longitudinal direction of the reduction box is parallel to the longitudinal direction of the vehicle.

In the vehicle deceleration transmission system in the above two embodiments, the drive motor and the reduction box are arranged in a longitudinal manner, which can reduce the occupation of the lateral space of the vehicle and save a lot of space. comfort. Moreover, the cross drive shaft is eliminated between the drive motor and the reducer, so that the drive motor and the reducer reduce the occupation of the longitudinal space of the vehicle, which is conducive to the layout of vehicle parts, and the elimination of the cross drive shaft also makes the manufacturing cost of the vehicle lower Low.

Moreover, the vehicle deceleration transmission system, by arranging the brake disc and the parking brake in the upper housing, makes it possible to implement the braking operation even when the power output shaft of the drive motor rotates at a high speed, which can improve the driving safety of the vehicle.

Finally, it is noted that the above embodiments are only used to illustrate the technical solutions of the present utility model without limitation. Although the utility model has been described in detail with reference to the preferred embodiments, those of ordinary skill in the art should understand that the utility model can be Modifications or equivalent replacements of the technical solutions without departing from the purpose and scope of the technical solutions of the utility model shall be covered by the claims of the utility model.

Claims (1)

1. A vehicle deceleration transmission system, characterized in that: it comprises a driving motor, a reduction box, a left half shaft and a right half shaft; The reduction box includes a box body, and the box body is composed of an upper casing, a middle casing and a lower casing connected by bolts; the middle part of the upper casing is provided with a partition, and the partition divides the inner casing of the upper casing. The lumen is divided into an anterior cavity and a posterior cavity; The shell of the driving motor is fixedly connected with the upper casing of the box body by bolts, one section of the power output shaft of the driving motor is located in the front cavity, and one section is located in the rear cavity, and the power output shaft of the driving motor is provided with a brake disc. The brake disc is arranged in the front chamber of the upper case, and the upper case is provided with a parking brake matched with the brake disc; The rear cavity is provided with a helical gear reduction mechanism or a planetary gear reduction mechanism; The helical gear reduction mechanism includes a driving helical gear fixed on the power output shaft of the drive motor, an intermediate shaft arranged in the rear chamber of the upper housing, a driven helical gear arranged on the middle of the intermediate shaft and meshed with the driving helical gear. gear; The sun gear in the planetary gear reduction mechanism is fixed on the power output shaft of the drive motor, the ring gear in the planetary gear reduction mechanism is fixed on the rear cavity wall of the upper casing, and the planet carrier in the planetary gear reduction mechanism is provided with intermediate shaft for power output; A differential is arranged in the middle casing, and a driven bevel gear is arranged on the casing of the differential, and the intermediate shaft part of the helical gear reduction mechanism or the planetary gear reduction mechanism extends into the middle casing, and The intermediate shaft is provided with a driving bevel gear meshed with a driven bevel gear; The two power output shafts of the differential extend out of the middle casing and are respectively connected with the left half shaft and the right half shaft; The power output shaft of the driving motor is parallel to the longitudinal direction of the vehicle, and the longitudinal direction of the reduction box is parallel to the longitudinal direction of the vehicle.