Driving system of vehicle

Abstract

The utility model discloses a driving system of a vehicle, which comprises an electrically-driven vehicle, a middle axle driving assembly and a rear axle driving assembly are arranged on the electrically-driven vehicle, and the middle axle driving assembly and the rear axle driving assembly are positioned on a chassis of the electrically-driven vehicle. The middle axle driving assembly comprises a middle axle shell assembly, two first motor assemblies and a first power transmission assembly, and the rear axle driving assembly comprises a rear axle shell assembly, a second motor assembly and a second power transmission assembly. By means of the arrangement mode of the middle axle drive assembly and the rear axle drive assembly, when a vehicle needs large power during starting, accelerating, climbing and the like, the ninth gear is controlled to be meshed with the tenth gear or the eleventh gear, the rear axle assembly is changed into the drive axle assembly, the drive axle assembly and the middle axle drive assembly provide power for the vehicle at the same time, and therefore the vehicle is driven to run stably. When the vehicle runs at a constant speed or in a decelerated state and does not need large power, the ninth gear and the tenth gear are controlled to be separated, and the rear axle assembly is changed into a driven axle.

Description

Technical Field

[0001] The utility model relates to the technical field of driving, in particular to a driving system of a vehicle. Background Art

[0002] Traditional 6×4 electric drive semi-trailer tractor and 8×4 electric drive box truck are generally driven by the middle and rear axle assemblies at the same time. When starting, accelerating, constant speed, decelerating and climbing various road conditions, the speed can only be changed by the controller to cope with different road conditions. The middle and rear axle assemblies are always in the driving state, which will lead to excessive waste of energy and it is not convenient to change the driving state of the middle and rear axle assemblies according to the vehicle driving conditions. Utility Model Content

[0003] The purpose of the utility model is to provide a vehicle driving system to solve the problems raised in the above background technology.

[0004] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a vehicle driving system, including an electric drive vehicle;

[0005] The electric drive vehicle is provided with a center axle drive assembly and a rear axle drive assembly, and the center axle drive assembly and the rear axle drive assembly are located on the chassis of the electric drive vehicle. The center axle drive assembly includes a center axle housing assembly, two first motor assemblies and a first power transmission component, and the first motor assembly is used to provide power output. The first power transmission component includes a first shaft, a first gear, a second shaft, a second gear, a third gear, a fourth gear, a first differential, and a first half shaft.

[0006] Preferably, the two first motor assemblies are located on the same side of the center bridge housing assembly, and the two first motor assemblies jointly transmit power to the second gear through the first shaft and the first gear, and the second gear transmits power to the fourth gear through the second shaft and the third gear, and the fourth gear is connected to the first differential as a whole, and the fourth gear transmits power to the first half-shaft through the first differential, and the first half-shaft transmits power to the wheels.

[0007] Preferably, the two first motor assemblies in the center axle drive assembly are located on the front and rear sides of the center axle housing assembly, and the two first motor assemblies jointly transmit power to the second gear through the first shaft and the first gear, and the second gear transmits power to the fourth gear through the second shaft and the third gear, and the fourth gear is connected to the first differential as a whole, and the fourth gear transmits power to the first half-shaft through the first differential, and the first half-shaft transmits power to the wheels.

[0008] Preferably, the rear axle drive assembly includes a rear axle housing assembly, a second motor assembly and a second power transmission assembly, the second motor assembly is used to provide power, and the second power transmission assembly includes a third shaft, a fifth gear, a fourth shaft, a sixth gear, a seventh gear, a fifth shaft, an eighth gear, a ninth gear, a tenth gear, a shift fork, a second differential, a second half shaft, and a bearing.

[0009] Preferably, the second motor assembly transmits power to the sixth gear through the third shaft and the fifth gear, the sixth gear transmits power to the eighth gear through the fourth shaft and the seventh gear, the eighth gear transmits power to the tenth gear through the fifth shaft and the ninth gear, the tenth gear and the second differential are connected as a whole through a bearing, and the tenth gear transmits power to the wheels through a bearing, the second differential and the second half shaft.

[0010] Preferably, the shift fork controls the tenth gear to connect and disconnect with the second differential, the tenth gear is separated from the second differential, so that the rear axle drive assembly is in a neutral state, the electric drive vehicle is driven by the mid-axle drive assembly, the tenth gear is connected to the second differential, so that the rear axle drive assembly is in a forward gear state, and the electric drive vehicle is driven by the mid-axle drive assembly and the rear axle drive assembly at the same time.

[0011] Preferably, the second power transmission component also includes an eleventh gear and a twelfth gear, the second motor assembly transmits power to the sixth gear through the third shaft and the fifth gear, the sixth gear transmits power to the eighth gear through the fourth shaft and the seventh gear, the eighth gear transmits power to the tenth gear and the twelfth gear respectively through the fifth shaft, the ninth gear and the eleventh gear, the tenth gear and the twelfth gear are respectively connected to the second differential through bearings, and the bearings transmit power to the wheels through the second half shaft.

[0012] Preferably, the shift fork controls the second differential to connect and disconnect with the tenth gear, and the second differential is separated from both the tenth gear and the twelfth gear, so that the rear axle drive assembly is in neutral, the electric drive vehicle is driven by the mid-axle drive assembly, the second differential is connected with the tenth gear, so that the rear axle drive assembly is in the first forward gear, and the second differential is connected with the twelfth gear, so that the rear axle drive assembly is in the second forward gear.

[0013] Technical effects and advantages of the utility model:

[0014] The utility model utilizes the arrangement of the middle axle drive assembly and the rear axle drive assembly. When the vehicle is in the state of starting, accelerating, climbing a slope, etc. and requires greater power, the ninth gear is controlled to mesh with the tenth gear or the eleventh gear, and the rear axle assembly becomes a drive axle assembly, and provides power to the vehicle together with the middle axle drive assembly. When the vehicle is in the state of constant speed, deceleration, etc. and does not require greater power, the ninth gear and the tenth gear are controlled to separate, the rear axle assembly becomes a driven axle, and only the middle axle assembly provides power to the vehicle, thereby saving energy. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is a schematic diagram of the location of the drive system on a 6×4 electric drive semi-trailer tractor.

[0016] Figure 2 This is a schematic diagram of the location of the drive system on an 8×4 electric drive box truck.

[0017] Figure 3 This is a schematic diagram of the axle drive assembly structure in the drive system.

[0018] Figure 4 This is a schematic diagram of the connection between the two motor assemblies and the transmission components in the bridge drive assembly in the drive system.

[0019] Figure 5 This is a schematic diagram of the rear axle drive assembly structure of the drive system.

[0020] Figure 6 This is a schematic diagram of the second structure of the axle drive assembly in the drive system.

[0021] Figure 7 This is a schematic diagram of the connection between the two motor assemblies and the transmission components of the second structure of the bridge drive assembly in the drive system.

[0022] Figure 8 This is a schematic diagram of the second structure of the rear axle drive assembly of the drive system.

[0023] In the figure: 1, electric drive vehicle; 11, mid-axle drive assembly; 111, first motor assembly; 112, first shaft; 113, first gear; 114, second shaft; 115, second gear; 116, third gear; 117, fourth gear; 118, first differential; 119, first half shaft; 12, rear axle drive assembly; 121, second motor assembly; 122, third shaft; 123, fifth gear; 124, fourth shaft; 125, sixth gear; 126, seventh gear; 127, fifth shaft; 128, eighth gear; 129, ninth gear; 1291, eleventh gear; 130, tenth gear; 1301, twelfth gear; 131, fork; 132, second differential; 133, second half shaft; 134, bearing. DETAILED DESCRIPTION

[0024] 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.

[0025] Example 1

[0026] The utility model provides Figure 1-5 A vehicle drive system is shown, comprising an electric drive vehicle 1, on which a mid-axle drive assembly 11 and a rear-axle drive assembly 12 are provided, and the electric drive vehicle 1 may be a 6×4 electric drive semi-trailer tractor or an 8×4 electric drive box truck.

[0027] The middle axle drive assembly 11 and the rear axle drive assembly 12 are located on the chassis of the electric drive vehicle 1. The middle axle drive assembly 11 includes a middle axle housing assembly, two first motor assemblies 111 and a first power transmission assembly. The first motor assembly 111 is used to provide power output. The first power transmission assembly includes a first shaft 112, a first gear 113, a second shaft 114, a second gear 115, a third gear 116, a fourth gear 117, a first differential 118, a first half shaft 119, two first motor assemblies 111 is located on the same side of the middle bridge housing assembly. The two first motor assemblies 111 jointly transmit power to the second gear 115 through the first shaft 112 and the first gear 113. The second gear 115 transmits power to the fourth gear 117 through the second shaft 114 and the third gear 116. The fourth gear 117 and the first differential 118 are connected as a whole. The fourth gear 117 transmits power to the first half shaft 119 through the first differential 118, and the first half shaft 119 transmits power to the wheels.

[0028] The rear axle drive assembly 12 includes a rear axle housing assembly, a second motor assembly 121 and a second power transmission assembly. The second motor assembly 121 is used to provide power. The second power transmission assembly includes a third shaft 122, a fifth gear 123, a fourth shaft 124, a sixth gear 125, a seventh gear 126, a fifth shaft 127, an eighth gear 128, a ninth gear 129, a tenth gear 130, a shift fork 131, a second differential 132, a second half shaft 133, and a bearing 134. The second motor assembly 121 transmits power to the sixth gear 125 through the third shaft 122 and the fifth gear 123. The sixth gear 125 transmits power to the eighth gear 128 through the fourth shaft 124 and the seventh gear 126. The eighth gear 128 transmits power to the eighth gear 128 through the fifth shaft 127 and the ninth gear 129. The force is transmitted to the tenth gear 130, and the tenth gear 130 and the second differential 132 are connected as a whole through the bearing 134. The tenth gear 130 transmits the power to the wheels through the bearing 134, the second differential 132 and the second half shaft 133. The shift fork 131 controls the connection and separation of the tenth gear 130 and the second differential 132. The tenth gear 130 is separated from the second differential 132, so that the rear axle drive assembly 12 is in a neutral state, and the vehicle is completely driven by the middle axle drive assembly 11, which is more energy-efficient. The electric drive vehicle 1 is driven by the middle axle drive assembly 11, and the tenth gear 130 is connected to the second differential 132, so that the rear axle drive assembly 12 is in a forward gear state. The electric drive vehicle 1 is driven by the middle axle drive assembly 11 and the rear axle drive assembly 12 at the same time, and has higher power.

[0029] Example 2

[0030] The utility model provides Figure 6-7 A vehicle drive system is shown, wherein a middle axle drive assembly 11 and a rear axle drive assembly 12 are located at a chassis position of an electric drive vehicle 1, the middle axle drive assembly 11 comprises a middle axle housing assembly, two first motor assemblies 111 and a first power transmission assembly, the first motor assembly 111 is used to provide power output, the first power transmission assembly comprises a first shaft 112, a first gear 113, a second shaft 114, a second gear 115, a third gear 116, a fourth gear 117, a first differential 118, a first half shaft 119, and the middle axle drive assembly 1 The two first motor assemblies 111 in 1 are located at the front and rear sides of the middle bridge housing assembly. The two first motor assemblies 111 jointly transmit power to the second gear 115 through the first shaft 112 and the first gear 113. The second gear 115 transmits power to the fourth gear 117 through the second shaft 114 and the third gear 116. The fourth gear 117 and the first differential 118 are connected as one. The fourth gear 117 transmits power to the first half shaft 119 through the first differential 118, and the first half shaft 119 transmits power to the wheels.

[0031] Example 3

[0032] The utility model provides Figure 8 The driving system of a vehicle shown in the figure, the rear axle drive assembly 12 includes a rear axle housing assembly, a second motor assembly 121 and a second power transmission assembly, the second motor assembly 121 is used to provide power, the second power transmission assembly includes a third shaft 122, a fifth gear 123, a fourth shaft 124, a sixth gear 125, a seventh gear 126, a fifth shaft 127, an eighth gear 128, a ninth gear 129, a tenth gear 130, a shift fork 131, a second differential 132, a second half shaft 133, and a bearing 134, the second power transmission assembly also includes an eleventh gear 1291 and a twelfth gear 1301, the second motor assembly 121 transmits power to the sixth gear 125 through the third shaft 122 and the fifth gear 123, the sixth gear 125 transmits power to the eighth gear 128 through the fourth shaft 124 and the seventh gear 126, the eighth gear 128 transmits power to the eighth gear 128 through the fifth shaft 127, the ninth gear 129 and the eleventh gear The wheel 1291 transmits power to the tenth gear 130 and the twelfth gear 1301 respectively. The tenth gear 130 and the twelfth gear 1301 are respectively connected to the second differential 132 through bearings 134. The bearing 134 transmits power to the wheels through the second half shaft 133. The shift fork 131 controls the second differential 132 to connect and disconnect with the tenth gear 130. The second differential 132 is separated from the tenth gear 130 and the twelfth gear 1301, so that the rear axle drive assembly 12 is in neutral. The electric drive vehicle 1 is driven by the middle axle drive assembly 11. The second differential 132 is connected to the tenth gear 130, so that the rear axle drive assembly 12 is in the first forward gear. The second differential 132 is connected to the twelfth gear 1301, so that the rear axle drive assembly 12 is in the second forward gear. Therefore, the first forward gear or the second forward gear can be selected according to the power required for the vehicle to climb the slope. The electric drive vehicle 1 can use different power according to different road conditions.

[0033] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A vehicle drive system, comprising an electric drive vehicle (1); It is characterized in that The electric drive vehicle (1) is provided with a middle axle drive assembly (11) and a rear axle drive assembly (12), wherein the middle axle drive assembly (11) and the rear axle drive assembly (12) are located on the chassis of the electric drive vehicle (1), wherein the middle axle drive assembly (11) comprises a middle axle housing assembly, a first motor assembly (111) and a first power transmission assembly, wherein the first motor assembly (111) is used for providing power output, and the first power transmission assembly comprises a first shaft (112), a first gear (113), a second shaft (114), a second gear (115), a third gear (116), a fourth gear (117), a first differential (118) and a first half shaft (119).

2. A vehicle driving system according to claim 1, characterized in that: The first motor assembly (111) is located on the same side of the middle bridge housing assembly. The first motor assembly (111) transmits power to the second gear (115) through the first shaft (112) and the first gear (113). The second gear (115) transmits power to the fourth gear (117) through the second shaft (114) and the third gear (116). The fourth gear (117) and the first differential (118) are connected as one. The fourth gear (117) transmits power to the first half shaft (119) through the first differential (118). The first half shaft (119) transmits power to the wheels.

3. A vehicle driving system according to claim 1, characterized in that: The first motor assembly (111) in the middle axle drive assembly (11) is located at the front and rear sides of the middle axle housing assembly. The first motor assembly (111) transmits power to the second gear (115) through the first shaft (112) and the first gear (113). The second gear (115) transmits power to the fourth gear (117) through the second shaft (114) and the third gear (116). The fourth gear (117) and the first differential (118) are connected as one. The fourth gear (117) transmits power to the first half shaft (119) through the first differential (118). The first half shaft (119) transmits power to the wheels.

4. A vehicle driving system according to claim 1, characterized in that: The rear axle drive assembly (12) comprises a rear axle housing assembly, a second motor assembly (121) and a second power transmission assembly, wherein the second motor assembly (121) is used to provide power, and the second power transmission assembly comprises a third shaft (122), a fifth gear (123), a fourth shaft (124), a sixth gear (125), a seventh gear (126), a fifth shaft (127), an eighth gear (128), a ninth gear (129), a tenth gear (130), a shift fork (131), a second differential (132), a second half shaft (133) and a bearing (134).

5. A vehicle driving system according to claim 4, characterized in that: The second motor assembly (121) transmits power to the sixth gear (125) through the third shaft (122) and the fifth gear (123); the sixth gear (125) transmits power to the eighth gear (128) through the fourth shaft (124) and the seventh gear (126); the eighth gear (128) transmits power to the tenth gear (130) through the fifth shaft (127) and the ninth gear (129); the tenth gear (130) and the second differential (132) are connected as a whole through a bearing (134); the tenth gear (130) transmits power to the wheels through the bearing (134), the second differential (132) and the second half shaft (133).

6. A vehicle driving system according to claim 5, characterized in that: The shift fork (131) controls the connection and disconnection of the tenth gear (130) with the second differential (132), and the tenth gear (130) is disconnected from the second differential (132), so that the rear axle drive assembly (12) is in a neutral state, and the electric drive vehicle (1) is driven by the middle axle drive assembly (11), and the tenth gear (130) is connected to the second differential (132), so that the rear axle drive assembly (12) is in a forward gear state, and the electric drive vehicle (1) is driven by the middle axle drive assembly (11) and the rear axle drive assembly (12) at the same time.

7. A vehicle driving system according to claim 4, characterized in that: The second power transmission assembly further comprises an eleventh gear (1291) and a twelfth gear (1301); the second motor assembly (121) transmits power to a sixth gear (125) via a third shaft (122) and a fifth gear (123); the sixth gear (125) transmits power to an eighth gear (128) via a fourth shaft (124) and a seventh gear (126); the eighth gear (128) transmits power to a tenth gear (130) and a twelfth gear (1301) via a fifth shaft (127), a ninth gear (129) and an eleventh gear (1291), respectively; the tenth gear (130) and the twelfth gear (1301) are respectively connected to the second differential (132) via a bearing (134); the bearing (134) transmits power to the wheels via the second half shaft (133).

8. A vehicle driving system according to claim 7, characterized in that: The shift fork (131) controls the second differential (132) to connect and disconnect with the tenth gear (130), and the second differential (132) is disconnected from both the tenth gear (130) and the twelfth gear (1301), so that the rear axle drive assembly (12) is in neutral gear. The electric drive vehicle (1) is driven by the mid-axle drive assembly (11), and the second differential (132) is connected with the tenth gear (130), so that the rear axle drive assembly (12) is in forward first gear. The second differential (132) is connected with the twelfth gear (1301), so that the rear axle drive assembly (12) is in forward second gear.

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