Automobile rear axle device

Abstract

The utility model belongs to the technical field of automobile rear axles, and particularly relates to an automobile rear axle device which comprises a rear axle body, a transmission shaft arranged on one side of the rear axle body, a hub fixedly connected to one end of the transmission shaft, a protective shell fixedly installed on the front face of the rear axle body, cooling fins arranged on the outer side of the protective shell and a driving motor fixedly installed in the protective shell. A rotating shaft is arranged at one end of the driving motor, a heat-conducting plate is arranged on the outer side of the driving motor, a temperature sensor and a single-chip microcomputer are fixedly installed on the inner wall of the protective shell, and a heat dissipation box is fixedly installed on one side of the protective shell. The temperature sensor, the single-chip microcomputer, the heat dissipation box, the heat dissipation fan and the ventilation holes are used in cooperation, the temperature sensor can monitor the temperature in the protective shell in real time, when the temperature exceeds a limit value, signal feedback is conducted to the single-chip microcomputer, the single-chip microcomputer controls the heat dissipation fan to work, and therefore the heat dissipation effect is improved. And the driving motor can be rapidly and timely cooled, and operation and use are convenient.

Description

Technical Field

[0001] The utility model relates to the technical field of automobile rear axles, in particular to an automobile rear axle device. Background Art

[0002] The rear axle refers to the rear drive shaft component of the vehicle power transmission. It consists of two half-bridges, which can implement half-bridge differential movement. At the same time, it is also a device used to support the wheels and connect the rear wheels. If it is a front-axle driven vehicle, the rear axle is just a follower axle and only plays a bearing role. If the front axle is not a driving axle, then the rear axle is a driving axle. At this time, in addition to the bearing function, it also plays the role of driving, deceleration and differential. If it is a four-wheel drive, there is generally a transfer case in front of the rear axle. The rear axle is divided into an integral axle and a half-bridge. The integral axle is equipped with a non-independent suspension, such as a leaf spring suspension, and the half-bridge is equipped with an independent suspension, such as a McPherson suspension. According to the different functions of the axle, the axle can be divided into a driving axle, a steering axle, a supporting axle, and a steering driving axle. The front axle and the rear axle refer to the front and rear wheel axles. The front axle includes shock absorber springs, steering gears, balance shafts, etc., and the rear axle also includes a driving shaft, transmission gears, etc. The rear part of a multi-axle truck is divided into a driven rear axle and an undriven rear axle. The undriven rear axle is the part that has no drive shaft connection and does not belong to the drive wheel. It is generally only found in heavy trucks and tractor trucks with more than 3 axles.

[0003] The prior art has the following deficiencies: The prior art is disclosed in publication number CN202222633870.5, which is a rear axle device of an automobile, comprising a transmission shaft and a motor, wherein the motor is installed on one side of the outside of the transmission shaft; a protective cover is provided on the outside of the motor, and both ends of the transmission shaft pass through the protective cover, a temperature sensor is fixed in the protective cover, a heat dissipation port is provided on one side of the protective cover, a baffle is installed in the heat dissipation port, and an opening and closing part is provided in the protective cover for automatically opening or closing the baffle; a mounting hole is provided on the surface of the baffle, and a cooling plate is installed in the mounting hole.

[0004] When in use, the above-mentioned equipment requires manual operation to dissipate heat and cool down the motor, which makes its working automation level relatively low. At the same time, its heat dissipation structure is relatively simple, and the heat dissipation effect is poor during working use, which makes it inconvenient to quickly dissipate heat and cool down the motor, which makes its working use have certain limitations. Utility Model Content

[0005] In view of the deficiencies of the prior art, the utility model provides a vehicle rear axle device to solve the problems raised in the above background technology.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a rear axle device of an automobile, comprising a rear axle body, a transmission shaft is arranged on one side of the rear axle body, a wheel hub is fixedly connected to one end of the transmission shaft, a protective shell is fixedly installed on the front side of the rear axle body, a heat sink is arranged on the outside of the protective shell, a drive motor is fixedly installed inside the protective shell, a rotating shaft is arranged at one end of the drive motor, a heat conducting plate is arranged on the outside of the drive motor, a temperature sensor is fixedly installed on the inner wall of the protective shell, a single-chip microcomputer is fixedly installed on the inner wall of the protective shell, and a heat dissipation box is fixedly installed on one side of the protective shell.

[0007] As a preferred technical solution of the utility model, two transmission shafts are provided, and the transmission shafts are symmetrically distributed on both sides of the rear axle body.

[0008] As a preferred technical solution of the utility model, two wheel hubs are provided, and the wheel hubs are fixedly mounted on one end of the transmission shaft by bolts.

[0009] As a preferred technical solution of the utility model, a plurality of heat sinks are provided, the heat sinks are evenly and symmetrically distributed on the outside of the protective shell, and the heat sinks are made of aluminum alloy material.

[0010] As a preferred technical solution of the utility model, the heat conducting plate is arranged in a ring shape, the heat conducting plate is wrapped around the outer wall of the driving motor, and the heat conducting plate is made of aluminum alloy material.

[0011] As a preferred technical solution of the utility model, the temperature sensor and the single-chip microcomputer are both installed on the same side of the inner wall of the protective shell, and the temperature sensor is electrically connected to the single-chip microcomputer through a wire.

[0012] As a preferred technical solution of the utility model, the heat dissipation box includes a cooling fan, ventilation holes and a dustproof net. The cooling fan is fixedly installed inside the heat dissipation box, ventilation holes are arranged on one side of the heat dissipation box, and a dustproof net is arranged inside the ventilation holes. The cooling fan is electrically connected to the single-chip computer through wires, and a plurality of ventilation holes are arranged, and the ventilation holes are arranged in a ring shape.

[0013] Compared with the prior art, the utility model provides a vehicle rear axle device, which has the following beneficial effects:

[0014] The automobile rear axle device is used in coordination with a temperature sensor, a single-chip microcomputer, a heat sink, a cooling fan and ventilation holes. The temperature sensor can monitor the internal temperature of the protective shell in real time. When the temperature exceeds a limit value, the temperature sensor will feed back a signal to the single-chip microcomputer, and the single-chip microcomputer will control the cooling fan to work, so that the drive motor can be quickly and timely cooled. The operation is convenient and the degree of automation is high. A dustproof net is provided inside the vent for coordinated use, so that dust can be prevented from easily entering the interior during ventilation and heat dissipation, so that better work can be carried out. A heat conduction plate and a heat sink are provided for coordinated use, so that the heat generated by the drive motor can be quickly conducted out and dissipated, so that the heat dissipation effect can be further improved, so that long-term work can be better carried out. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the three-dimensional structure of the utility model;

[0016] Figure 2 This is a schematic diagram of the cross-sectional structure of the protective shell of the utility model;

[0017] Figure 3 This is a schematic diagram of the three-dimensional structure of the protective shell of the utility model;

[0018] Figure 4 This is a schematic diagram of the structure of the heat conducting plate of the utility model.

[0019] In the figure: 1. rear axle body; 2. transmission shaft; 3. wheel hub; 4. protective shell; 5. heat sink; 6. drive motor; 7. rotating shaft; 8. heat conduction plate; 9. temperature sensor; 10. single-chip microcomputer; 11. heat sink box; 1101. cooling fan; 1102. ventilation hole; 1103. dust net. DETAILED DESCRIPTION

[0020] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0021] See also Figure 1-4In this embodiment: a rear axle device for an automobile comprises a rear axle body 1, a transmission shaft 2 is arranged on one side of the rear axle body 1, which is convenient for connecting to a wheel hub 3, and a wheel hub 3 is fixedly connected to one end of the transmission shaft 2, which is convenient for driving the automobile to move. A protective shell 4 is fixedly installed on the front of the rear axle body 1, which is convenient for installing a driving motor 6. A heat sink 5 is arranged on the outside of the protective shell 4, which is convenient for heat dissipation. A driving motor 6 is fixedly installed inside the protective shell 4, which is convenient for rotating a rotating shaft 7. A rotating shaft 7 is arranged at one end of the driving motor 6, which is convenient for driving work. A heat conducting plate 8 is arranged on the outside of the driving motor 6, which is convenient for rapid heat conduction. A temperature sensor 9 is fixedly installed on the inner wall of the protective shell 4, which is convenient for monitoring the temperature. A single-chip computer 10 is fixedly installed on the inner wall of the protective shell 4, which is convenient for receiving signals and issuing commands. A heat dissipation box 11 is fixedly installed on one side of the protective shell 4, which is convenient for installing a heat dissipation mechanism.

[0022] In this embodiment, there are two transmission shafts 2, which are symmetrically distributed on both sides of the rear axle body 1, which are convenient for connecting the wheel hub 3 and rotating the wheel hub 3; there are two wheel hubs 3, which are fixedly installed at one end of the transmission shaft 2 by bolts, which improves the stability of fixed installation and is convenient for work and use; there are a number of heat sinks 5, which are evenly and symmetrically distributed on the outside of the protective shell 4, and the heat sink 5 is made of aluminum alloy material, which is convenient for heat dissipation and can improve the heat dissipation effect; the heat conducting plate 8 is set to a ring shape, and the heat conducting plate 8 is wrapped around the outer wall of the driving motor 6. The heat conducting plate 8 is made of aluminum alloy material, which is convenient for rapid heat conduction and heat dissipation; the temperature sensor 9 is connected to the single-chip microcomputer 1 0 are all installed on the same side of the inner wall of the protective shell 4, and the temperature sensor 9 is electrically connected to the single-chip computer 10 through a wire, which is convenient for real-time temperature monitoring and signal feedback; the heat dissipation box 11 includes a cooling fan 1101, ventilation holes 1102 and a dustproof net 1103. The cooling fan 1101 is fixedly installed inside the heat dissipation box 11, and ventilation holes 1102 are arranged on one side of the heat dissipation box 11. A dustproof net 1103 is arranged inside the ventilation holes 1102. The cooling fan 1101 is electrically connected to the single-chip computer 10 through a wire, and a plurality of ventilation holes 1102 are arranged. The ventilation holes 1102 are arranged in a ring shape, which is convenient for heat dissipation of the drive motor 6 and can further improve the heat dissipation effect.

[0023] The working principle and use process of the utility model are as follows: the operator controls the driving motor 6 to work and can rotate the rotating shaft 7, so as to drive the internal transmission mechanism of the rear axle body 1 to drive the transmission shaft 2 to rotate, which is convenient for work and use. When the driving motor 6 generates high temperature after a long period of work and use, its temperature can be monitored by the temperature sensor 9. When the temperature exceeds the limit value, it will feedback a signal to the single-chip microcomputer 10, and the single-chip microcomputer 10 will work by controlling the cooling fan 1101, so as to quickly dissipate heat for the driving motor 6. It has a high degree of automation and is convenient to operate and use.

[0024] Finally, it should be noted that the above description is only a preferred embodiment of the utility model and is not intended to limit the utility model. Although the utility model is described in detail with reference to the above embodiments, those skilled in the art can still modify the technical solutions recorded in the above embodiments or replace some of the technical features therein by equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.

Claims

1. A rear axle device for an automobile, comprising a rear axle body (1), a transmission shaft (2) being arranged on one side of the rear axle body (1), and a wheel hub (3) being fixedly connected to one end of the transmission shaft (2), characterized in that: A protective shell (4) is fixedly mounted on the front of the rear axle body (1); a heat sink (5) is arranged on the outside of the protective shell (4); a drive motor (6) is fixedly mounted inside the protective shell (4); a rotating shaft (7) is arranged at one end of the drive motor (6); a heat conduction plate (8) is arranged on the outside of the drive motor (6); a temperature sensor (9) is fixedly mounted on the inner wall of the protective shell (4); a single-chip computer (10) is fixedly mounted on the inner wall of the protective shell (4); and a heat sink box (11) is fixedly mounted on one side of the protective shell (4).

2. The rear axle device of an automobile according to claim 1, characterized in that: Two transmission shafts (2) are provided, and the transmission shafts (2) are symmetrically distributed on both sides of the rear axle body (1).

3. The rear axle device of an automobile according to claim 1, characterized in that: Two wheel hubs (3) are provided, and the wheel hubs (3) are fixedly mounted on one end of the transmission shaft (2) by means of bolts.

4. The rear axle device of an automobile according to claim 1, characterized in that: A plurality of the heat sinks (5) are provided, the heat sinks (5) are evenly and symmetrically distributed on the outside of the protective shell (4), and the heat sinks (5) are made of an aluminum alloy material.

5. The automobile rear axle device according to claim 1, characterized in that: The heat conducting plate (8) is arranged in a ring shape, the heat conducting plate (8) is wrapped around the outer wall of the drive motor (6), and the heat conducting plate (8) is made of an aluminum alloy material.

6. The automobile rear axle device according to claim 1, characterized in that: The temperature sensor (9) and the single-chip microcomputer (10) are both mounted on the same side of the inner wall of the protective shell (4), and the temperature sensor (9) is electrically connected to the single-chip microcomputer (10) via a wire.

7. The automobile rear axle device according to claim 1, characterized in that: The heat dissipation box (11) comprises a heat dissipation fan (1101), ventilation holes (1102) and a dustproof net (1103); the heat dissipation box (111) has a heat dissipation fan (1101) fixedly installed inside; a ventilation hole (1102) is provided on one side of the heat dissipation box (11); a dustproof net (1103) is provided inside the ventilation hole (1102); the heat dissipation fan (1101) is electrically connected to the single-chip computer (10) via a wire; a plurality of ventilation holes (1102) are provided, and the ventilation holes (1102) are arranged in a ring shape.

Images