Integrated electric drive axle power takeoff arrangement structure

Abstract

The invention discloses an integrated electric drive axle power takeoff arrangement structure which comprises a motor, a transmission assembly, a power takeoff input shaft assembly, a power takeoff assembly and an oil pump assembly. The motor is connected with an input shaft assembly in the transmission assembly; the power takeoff input shaft assembly is connected with a three-stage transmission shaft assembly in the transmission assembly; the power takeoff is connected to the transmission shell; the oil pump assembly is connected with the power takeoff assembly; the structure is simple and compact, the occupied axial space is small, the weight is light, the centroid offset is small, and the arrangement of the whole vehicle is convenient; the device can be suitable for integrated electric drive axles of single-motor and double-motor structures at the same time, and the lifting requirements of motor tractors, dump trucks, special vehicles and other vehicle types in multiple application scenes are met.

Description

Technical Field

[0001] The present invention relates to the technical field of integrated electric drive axles, and in particular to an integrated electric drive axle power take-off arrangement structure, which is suitable for new energy commercial vehicles and can realize the arrangement of power take-offs in a compact space. Background Art

[0002] With the rapid development of new energy commercial vehicle technology, integrated electric drive axles have become one of the preferred technical routes for new energy commercial vehicles with their advantages such as light weight, low noise and high efficiency. However, due to the limited cruising range, new energy heavy trucks are currently mainly used in short-distance application scenarios. Heavy trucks in short-distance scenarios generally have lifting requirements. The power take-off of traditional models is generally arranged on the transmission. After the integrated electric drive axle is arranged on the whole vehicle, the power take-off is not arranged, and it needs to be installed additionally, which is expensive. Summary of the invention

[0003] The purpose of the present invention is to overcome the deficiencies of the prior art and provide an integrated electric drive axle power take-off arrangement structure.

[0004] The technical solution provided by the present invention is an integrated electric drive axle power take-off arrangement structure, which is special in that it is composed of a motor, a transmission assembly, a power take-off input shaft assembly, a power take-off assembly, and an oil pump assembly; The transmission assembly is composed of an input shaft assembly, a secondary transmission shaft assembly, a tertiary transmission shaft assembly, an input shaft assembly driving gear, a secondary transmission shaft assembly driving gear, a secondary transmission shaft assembly driven gear, a tertiary transmission shaft assembly gear, a transmission shift sliding engagement sleeve and a needle bearing; the input shaft assembly is provided with an input shaft driving gear; the secondary transmission shaft assembly is provided with a secondary transmission shaft assembly driven gear and a secondary transmission shaft assembly driving gear; the transmission shift sliding engagement sleeve is connected to the tertiary transmission shaft assembly; the tertiary transmission shaft assembly is provided with a tertiary transmission shaft assembly gear, and the two are connected through a needle bearing; the input shaft driving gear is meshed with the secondary transmission shaft assembly driven gear, and the secondary transmission shaft assembly driving gear is meshed with the tertiary transmission shaft assembly gear; The motor is connected to the input shaft assembly in the transmission assembly, the power take-off input shaft assembly is connected to the three-stage transmission shaft assembly in the transmission assembly, a power take-off input shaft assembly gear is provided on the power take-off input shaft assembly, and the power take-off input shaft assembly is connected to the three-stage transmission shaft assembly gear through the power take-off input shaft assembly gear to obtain power; the power take-off assembly is connected to the power take-off input shaft assembly, and the oil pump assembly is connected to the power take-off assembly; the power take-off assembly is connected to the transmission housing; The power of the motor is transmitted to the power take-off input shaft assembly by several groups of gear shafts and gear pairs in the transmission. The transmission gear shafts involved in power transmission are the input shaft assembly, the secondary transmission shaft assembly and the tertiary transmission shaft assembly; the transmission gear pairs involved in power transmission are the input shaft assembly driving gear, the secondary transmission shaft assembly driven gear, the tertiary transmission shaft assembly gear, and the power take-off input shaft assembly gear.

[0005] Furthermore, the power take-off input shaft assembly is provided with a power take-off connecting external spline; the power take-off assembly is provided with a power take-off sliding engagement sleeve, and the power take-off sliding engagement sleeve is provided with a connecting internal spline; the oil pump assembly is connected to the power take-off assembly via a spline.

[0006] Furthermore, the power take-off input shaft assembly is arranged in parallel with the input shaft assembly, the secondary transmission shaft assembly, and the tertiary transmission shaft assembly.

[0007] Furthermore, the power take-off input shaft assembly gear and the third-stage transmission shaft assembly gear are both helical gears.

[0008] Furthermore, the motor is connected to the input shaft assembly via a spline.

[0009] Furthermore, the three-stage transmission shaft assembly is connected to the transmission shift sliding engagement sleeve via a spline.

[0010] Beneficial effects of the present invention: 1. By integrating the power take-off into the electric drive axle, the cost of the whole vehicle can be effectively reduced; 2. The structure is simple and compact, the axial space is small, the weight is light, and the center of mass offset is small, which is convenient for vehicle layout; 3. It can be applied to integrated electric drive axles with single and dual motor structures at the same time, meeting the lifting needs of tractors, dump trucks, special vehicles and other vehicles in multiple application scenarios. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 It is a schematic diagram of the structure of the present invention; Figure 2 It is a schematic diagram of the structural assembly of the present invention; Figure 3 is a schematic diagram of the input shaft assembly structure of the present invention; Figure 4 It is a schematic diagram of the structure of the secondary transmission shaft assembly of the present invention; Figure 5 It is a schematic diagram of the structure of the three-stage transmission shaft assembly of the present invention; Figure 6 It is a schematic structural diagram of the input shaft assembly of the power take-off of the present invention.

[0012] Figure 7 It is a schematic diagram of the structure of the power take-off assembly of the present invention.

[0013] In the figure, 1, motor, 2, input shaft assembly, 3, input shaft driving gear, 4, secondary transmission shaft assembly driven gear, 5, secondary transmission shaft assembly, 6, secondary transmission shaft assembly driving gear, 7, tertiary transmission shaft assembly gear, 8, transmission shift sliding engagement sleeve, 9, tertiary transmission shaft assembly, 10, power take-off input shaft assembly, 11, power take-off input shaft gear, 12, power take-off sliding engagement sleeve, 13, power take-off assembly, 14, oil pump assembly, 15, needle roller bearing. DETAILED DESCRIPTION

[0014] For better understanding and implementation, the present invention is described in detail below with reference to the accompanying drawings.

[0015] like Figure 1 , 2 , 3, 4, 5, 6, and 7 show an integrated electric drive axle power take-off arrangement structure, which is composed of a motor 1, a transmission assembly, a power take-off input shaft assembly 10, a power take-off assembly 13, and an oil pump assembly 14; The transmission assembly is composed of an input shaft assembly 2, a secondary transmission shaft assembly 5, a tertiary transmission shaft assembly 9, an input shaft assembly driving gear 3, a secondary transmission shaft assembly driving gear 6, a secondary transmission shaft assembly driven gear 4, a tertiary transmission shaft assembly gear 7, a transmission shift sliding engagement sleeve 8 and a needle roller bearing 15; the input shaft driving gear 3 is installed on the input shaft assembly 2; the secondary transmission shaft assembly driven gear 4 and the secondary transmission shaft assembly driving gear 6 are installed on the secondary transmission shaft assembly 5; the transmission shift sliding engagement sleeve 8 is connected to the tertiary transmission shaft assembly 9 through a spline; the tertiary transmission shaft assembly gear 7 is installed on the tertiary transmission shaft assembly 9, and the tertiary transmission shaft assembly gear 7 is connected to the tertiary transmission shaft assembly 9 through a needle roller bearing 15; the input shaft driving gear 3 is meshed with the secondary transmission shaft assembly driven gear 4, and the secondary transmission shaft assembly driving gear 6 is meshed with the tertiary transmission shaft assembly gear 7; The motor 1 is connected to the input shaft assembly 2 in the transmission assembly through a spline, the power take-off input shaft assembly 10 is connected to the three-stage transmission shaft assembly 9 in the transmission assembly, the power take-off input shaft assembly gear 11 is installed on the power take-off input shaft assembly 10, and the power take-off input shaft assembly 10 is connected to the three-stage transmission shaft assembly gear 7 through the power take-off input shaft assembly gear 11 to obtain power; a power take-off connecting external spline is provided on the power take-off input shaft assembly 10; a power take-off sliding engagement sleeve 12 is installed on the power take-off assembly 13, and a connecting internal spline is provided on the power take-off sliding engagement sleeve 12, and the power take-off assembly 13 is connected to the power take-off input shaft assembly 10; the oil pump assembly 14 is connected to the power take-off assembly 13 through a spline; the power take-off assembly 13 is connected to the transmission housing; The power of the motor 1 is transmitted to the power take-off input shaft assembly 10 by several groups of gear shafts and gear pairs in the transmission. The transmission gear shafts involved in power transmission are the input shaft assembly 2, the secondary transmission shaft assembly 5 and the tertiary transmission shaft assembly 9. The power take-off input shaft assembly 10 is arranged in parallel with the input shaft assembly 2, the secondary transmission shaft assembly 5 and the tertiary transmission shaft assembly 9; the transmission gear pairs involved in power transmission are the input shaft assembly driving gear 3, the secondary transmission shaft assembly driven gear 4, the tertiary transmission shaft assembly gear 7 and the power take-off input shaft assembly gear 11. The power take-off input shaft assembly gear 11 and the tertiary transmission shaft assembly gear 7 are both helical gears.

[0016] An integrated electric drive axle power take-off arrangement structure of the present invention, working principle: Power output: The gear position of the transmission is adjusted to the neutral position through the shifting function of the transmission shift sliding engagement sleeve 8. The transmission shift sliding engagement sleeve 8 is not combined with any gear on the three-stage transmission shaft assembly 9. The power output by the motor 1 is transmitted to the power take-off input shaft assembly 10 through the transmission input shaft assembly 2, the secondary transmission shaft assembly 5, and the tertiary transmission shaft assembly 9. The axial movement of the sliding engagement sleeve 12 in the power take-off 13 realizes the connection between the power take-off assembly 13 and the power take-off input shaft assembly 10, and then the output power of the motor 1 is transmitted to the power take-off assembly 13. The oil pump assembly 14 and the power take-off assembly 13 are connected by a spline, and finally the motor power is transmitted to the oil pump assembly 13 to realize power output.

[0017] The power transmission route of the power take-off includes: the transmission shift sliding engagement sleeve 8 is in a neutral state and is not connected to any gear. The power output by the motor 1 passes through the input shaft driving gear 3, the secondary transmission shaft assembly driven gear 4, the secondary transmission shaft assembly driving gear 6, the tertiary transmission shaft assembly gear 7, and the power take-off input shaft assembly gear 11 to realize the power input of the power take-off assembly.

[0018] It should be understood that the technical features not elaborated in detail in this specification belong to the prior art. Although the implementation methods of the present invention are described, the present invention is not limited to the above-mentioned specific implementation methods, which are merely illustrative and not restrictive. Ordinary technicians in this field can make more forms under the enlightenment of the present invention without departing from the scope of protection of the present invention and the claims, which are all within the protection scope of the present invention.

Claims

1. An integrated electric drive axle power take-off arrangement structure, characterized in that: It is composed of a motor (1), a transmission assembly, a power take-off input shaft assembly (10), a power take-off assembly (13), and an oil pump assembly (14); The transmission assembly comprises an input shaft assembly (2), a secondary transmission shaft assembly (5), a tertiary transmission shaft assembly (9), an input shaft assembly driving gear (3), a secondary transmission shaft assembly driving gear (6), a secondary transmission shaft assembly driven gear (4), a tertiary transmission shaft assembly gear (7), a transmission shift sliding engagement sleeve (8) and a needle roller bearing (15); the input shaft assembly (2) is provided with an input shaft driving gear (3); the secondary transmission shaft assembly (5) is provided with a secondary transmission shaft assembly driven gear (4) and a secondary transmission shaft assembly driving gear (6); the transmission shift sliding engagement sleeve (8) is connected to the tertiary transmission shaft assembly (9); the tertiary transmission shaft assembly (9) is provided with a tertiary transmission shaft assembly gear (7), and the two are connected via a needle roller bearing (15); the input shaft driving gear (3) is meshed with the secondary transmission shaft assembly driven gear (4), and the secondary transmission shaft assembly driving gear (6) is meshed with the tertiary transmission shaft assembly gear (7); The motor (1) is connected to the input shaft assembly (2) in the transmission assembly; the power take-off input shaft assembly (10) is connected to the three-stage transmission shaft assembly (9) in the transmission assembly; a power take-off input shaft assembly gear (11) is provided on the power take-off input shaft assembly (10); the power take-off input shaft assembly (10) is connected to the three-stage transmission shaft assembly gear (7) via the power take-off input shaft assembly gear (11) to obtain power; the power take-off assembly (13) is connected to the power take-off input shaft assembly (10); the oil pump assembly (14) is connected to the power take-off assembly (13); and the power take-off assembly (13) is connected to the transmission housing; The power of the motor (1) is transmitted to the power take-off input shaft assembly (10) by a plurality of gear shafts and gear pairs in the transmission. The transmission gear shafts involved in the power transmission are the input shaft assembly (2), the secondary transmission shaft assembly (5) and the tertiary transmission shaft assembly (9); the transmission gear pairs involved in the power transmission are the input shaft assembly driving gear (3), the secondary transmission shaft assembly driven gear (4), the tertiary transmission shaft assembly gear (7) and the power take-off input shaft assembly gear (11).

2. The integrated electric drive axle power take-off arrangement structure according to claim 1, characterized in that: The power take-off input shaft assembly (10) is provided with a power take-off connecting external spline; the power take-off assembly (13) is provided with a power take-off sliding engagement sleeve (12), and the power take-off sliding engagement sleeve (12) is provided with a connecting internal spline; the oil pump assembly (14) is connected to the power take-off assembly (13) via a spline.

3. The integrated electric drive axle power take-off arrangement structure according to claim 1 or 2, characterized in that: The power take-off input shaft assembly (10) is arranged in parallel with the input shaft assembly (2), the secondary transmission shaft assembly (5), and the tertiary transmission shaft assembly (9).

4. The integrated electric drive axle power take-off arrangement structure according to claim 1, characterized in that: The power take-off input shaft assembly gear (11) and the third-stage transmission shaft assembly gear (7) are both helical gears.

5. The integrated electric drive axle power take-off arrangement structure according to claim 1, characterized in that: The motor (1) is connected to the input shaft assembly (2) via a spline.

6. The integrated electric drive axle power take-off arrangement structure according to claim 1, characterized in that: The three-stage transmission shaft assembly (9) is connected to the transmission shift sliding engagement sleeve (8) via a spline.

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