CN216789128U - Pure electric commercial vehicle auxiliary system reduction box - Google Patents

Abstract

The utility model relates to a reduction gearbox of an auxiliary system of a pure electric commercial vehicle, which comprises a shell, 3 transmission shafts, a belt transmission and a plurality of gears; one end of a main input gear shaft (403) is fixedly connected with an output shaft of a driving motor in an auxiliary system, the other end of the main input gear shaft is provided with a main belt pulley, 2 auxiliary belt pulleys are respectively and fixedly connected with a driving shaft of an air conditioner compressor and a driving shaft of a low-voltage generator, a first shaft gear is meshed with a first gear (406), one end of a first intermediate shaft (404) is fixedly connected with a driving shaft of a cooling water pump, a second gear (407) is meshed with a gear (420) of the air compressor, a second shaft gear is meshed with a third gear (408), and a fourth gear (409) is meshed with a steering oil pump gear (419). The integrated level is high, the structure is compact, the performance and the arrangement are reasonable, the operation is stable, the cost is low, and the weight is light. The requirements of different torques, rotating speeds, rotating directions and the like of all functional parts in the auxiliary system are met.

Description

Pure electric commercial vehicle auxiliary system reduction box

Technical Field

The utility model belongs to the technical field of pure electric vehicles, and particularly relates to a reduction gearbox of an auxiliary system of a pure electric commercial vehicle.

Background

At the present stage, the new energy commercial vehicle is supported and popularized by society and China, the market demand is gradually improved, and the original product development is based on the traditional fuel vehicle platform. The power system of the existing electric vehicle is replaced by an electric drive system from the original engine. Auxiliary systems of the fuel vehicle, such as a brake air pump, a steering boosting oil pump, an air conditioner compressor, a low-voltage generator, a cooling system and the like, are powered by an engine. In order to meet functional requirements, the electric vehicle replaces products such as an electric air pump, an oil pump, a compressor and a water pump with an auxiliary system. For the whole vehicle, in order to realize performance, different functional components have to be matched with and use single electric subsystem components, and the problems of large arrangement limitation, large occupied space, high cost, heavy mass, poor compactness, high control complexity, high requirement difficulty and high failure rate exist. In addition, the accumulated and excessive waste of each system design has serious contradiction and influence on the concepts of energy conservation, environmental protection, light weight and the like of new energy.

The design and development of the auxiliary system assembly of the pure electric commercial vehicle are vital to a special gearbox capable of realizing power demand transmission of various parts with different rotating speeds, torques and the like, and at present, no borrowable, universal or borrowed reduction gearbox product capable of meeting the operation requirements of all parts is available to ensure the normal operation of the auxiliary system assembly of the new energy commercial vehicle.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a reduction gearbox of an auxiliary system of a pure electric commercial vehicle, which realizes high integration level, compact structure, reasonable performance and arrangement, stable operation, low cost and light weight. The requirements of different torques, rotating speeds, rotating directions and the like of all functional parts in the auxiliary system are met.

The technical scheme of the utility model is that a reduction gearbox of an auxiliary system of a pure electric commercial vehicle comprises a shell, 3 transmission shafts, a belt transmission and a plurality of gears; the 3 transmission shafts are respectively a main input gear shaft, a first intermediate shaft and a second intermediate shaft, and the front shell 401 and the rear shell are fixed on a shell of a driving motor in the auxiliary system.

The shell comprises a front shell 401 and a rear shell, the front shell 401 is fixedly connected with the rear shell, one end of a main input gear shaft is fixedly connected with an output shaft of a driving motor in an auxiliary system, a first shaft gear and a second shaft gear are arranged in the middle of the main input gear shaft, a main belt pulley 413 is installed at the other end of the main input gear shaft, 2 auxiliary belt pulleys are respectively and fixedly connected with a driving shaft of an air conditioner compressor and a driving shaft of a low-voltage generator, a first gear 406 and a second gear 407 are sleeved and fixed on the first intermediate shaft, the first shaft gear is meshed with the first gear 406, one end of the first intermediate shaft is fixedly connected with a driving shaft of a cooling water pump, the second gear 407 is meshed with a gear 420 of the air compressor, a fourth gear 409 is sleeved and fixed on the second intermediate shaft 405, the second shaft gear is meshed with a third gear, and the fourth gear is meshed with a steering oil pump gear 419.

A peep hole 422 is arranged at the right lower part of the front shell, an exhaust hole 17 is arranged at the upper part of the rear shell, an oil drain plug 418 is arranged at the lowest point of the lower part of the rear shell, and an oil seal 412 is arranged on the shell.

The utility model has the beneficial effects that the reduction gearbox has the advantages that the main shaft is input, and multiple shafts are output in a gear and belt wheel mode, so that different rotating speed and torque working requirements of each component of the air compressor, the steering oil pump, the low-voltage generator, the air-conditioning compressor and the circulating water pump in the auxiliary system of the pure electric commercial vehicle are met; the utility model adopts the symmetrical arrangement of the torque, so that the stress of the system is uniform and the operation is more stable; the utility model adopts the input arrangement of the rotating direction and the rotating speed, thereby ensuring the installation reliability; the auxiliary system assembly of the pure electric commercial vehicle meets the overall performances of practicality, economy, transmission efficiency, light weight and the like, ensures that each component is reliably installed, meets the operation requirement of the auxiliary system assembly of the new energy commercial vehicle, and is suitable for the auxiliary system assembly of the pure electric commercial vehicle.

Drawings

FIG. 1 is a schematic perspective structure diagram of a reduction gearbox of an auxiliary system of a pure electric commercial vehicle according to the utility model;

FIG. 2 is a front view of the present invention;

FIG. 3 is a rear view of FIG. 2;

FIG. 4 is a bottom view of FIG. 2;

fig. 5 is a schematic diagram of the transmission process of the present invention.

Detailed Description

The technical scheme of the utility model is further described in detail in the following with the accompanying drawings of the specification.

As shown in figures 1 to 5, the auxiliary system reduction box of the pure electric commercial vehicle comprises a shell, 3 transmission shafts, a belt transmission and a plurality of gears. One main input and four outputs are realized. The 3 transmission shafts are respectively a main input gear shaft 403, a first intermediate shaft 404 and a second intermediate shaft 405. The front case 401 and the rear case 402 are fixed to a drive motor housing in the auxiliary system.

The shell comprises a front shell 401 and a rear shell 402, and the front shell 401 and the rear shell 402 are positioned through two cylindrical pins to determine relative positions; and fixedly connected by bolts 415 to form a shell of the reduction gearbox. A peephole 422 is provided at the lower right of the front housing. The rear housing 402 is provided at an upper portion thereof with a discharge hole 417. The lowest point of the lower portion of the rear housing 402 is provided with a drain plug 418. A main input gear shaft 403 is mounted within the gearbox housing.

One end of the main input gear shaft 403 is fixedly connected with an output shaft of a driving motor in the auxiliary system. The middle part of the main input gear shaft 403 is provided with a first shaft gear and a second shaft gear. The other end is provided with a main belt pulley 413, and 2 auxiliary belt pulleys are respectively and fixedly connected with a driving shaft of the air-conditioning compressor and a driving shaft of the low-voltage generator, so that the air-conditioning compressor and the low-voltage generator are further driven to work by the rotation of the main belt pulley 413 through a belt. Two ends of the main input gear shaft 403 are respectively supported on the front shell 401 and the rear shell 402 through bearings 411, and oil seals 412 are arranged at the joints; the first gear 406 and the second gear 407 are sleeved and fixed on the first intermediate shaft 404, the flat keys 410 are adopted to prevent the gears from rotating independently, and the first shaft gear on the main input gear shaft 403 is meshed with the first gear 406 to drive the first intermediate shaft 404 to rotate. One end of the intermediate shaft I404 is fixedly connected with the driving shaft of the cooling water pump. Gear two 407 follows the countershaft one 404, and gear two 407 meshes with the air compressor gear 420. The gear four 409 is sleeved and fixed on the intermediate shaft two 405, the shaft gear two is meshed with the gear three 408 to drive the intermediate shaft two 405 to rotate, so that the gear four 409 follows up, the gear four 409 is meshed and connected with the steering oil pump gear 419, and power is input and output by taking a motor as a driving source through a reduction gearbox in the form of gears and belts according to parameters such as rotating speed, torque and the like required by each system. The operation of the relevant parts of the auxiliary system assembly of the pure electric commercial vehicle is met.

The gear box with the aluminum alloy cast shell has the advantages of compact structural arrangement, attractive appearance, light weight, stable mechanism operation and convenience in installation.

Claims (2)

1. The utility model provides a pure electric commercial car auxiliary system reducing gear box, characterized by: the reduction gearbox comprises a shell, 3 transmission shafts, a belt transmission and a plurality of gears; the 3 transmission shafts are respectively a main input gear shaft (403), a first intermediate shaft and a second intermediate shaft, and the front shell (401) and the rear shell (402) are fixed on a shell of a driving motor in the auxiliary system; the shell comprises a front shell (401) and a rear shell (402), the front shell (401) and the rear shell (402) are fixedly connected, one end of a main input gear shaft (403) is fixedly connected with an output shaft of a driving motor in an auxiliary system, a first shaft gear and a second shaft gear are arranged in the middle of the main input gear shaft (403), a main belt pulley (13) is installed at the other end of the main input gear shaft (403), 2 secondary belt pulleys are respectively and fixedly connected with a driving shaft of an air conditioner compressor and a driving shaft of a low-voltage generator, a first gear (406) and a second gear (407) are sleeved and fixed on the first intermediate shaft (404), the first shaft gear is meshed with the first gear (406), one end of the first intermediate shaft (404) is fixedly connected with a driving shaft of a cooling water pump, the second gear (407) is meshed with a gear (420) of an air compressor, a fourth gear (407) is sleeved and fixed on the second intermediate shaft (405), and the second shaft gear is meshed with a third gear (408), and a gear four (409) is in meshed connection with a steering oil pump gear (419).

2. The pure electric commercial vehicle auxiliary system reduction gearbox according to claim 1, characterized in that: a peeping hole (422) is formed in the right lower portion of the front shell, an exhaust hole (417) is formed in the upper portion of the rear shell (402), an oil drain plug (418) is arranged at the lowest point of the lower portion of the rear shell (402), and an oil seal (412) is arranged on the shell.

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