Integrated multi-power output transmission assembly

Abstract

An integrated multi-power output transmission assembly comprises a transmission shell and a motor which are connected with each other, a motor input shaft coaxially connected with the motor is arranged in the transmission shell, the integrated multi-power output transmission assembly further comprises a first power output assembly, and the first power output assembly comprises a first power output shaft arranged in the transmission shell. One end of the first power output shaft penetrates out of the side wall of the transmission shell, a power output gear meshed with a motor input shaft gear coaxially sleeves the end, close to the first power output shaft, of the first power output shaft, and a control unit is connected to the end, close to the other end, of the first power output shaft. And the second power output assembly is meshed with the motor input shaft gear. Through reasonable arrangement of component structures and integral integration, the structure is more compact, the arrangement difficulty of the commercial vehicle electric driving system on the whole vehicle is reduced, the risk of interference with other structures is greatly reduced, and the reliability is high.

Description

Technical Field

[0001] The utility model belongs to the technical field of commercial vehicle transmissions, and in particular relates to an integrated multi-power output transmission assembly. Background Art

[0002] With the innovation and upgrading of new energy technologies, electric drive systems, as a type of high-efficiency and low-pollution power transmission, have gradually evolved into the mainstream of the industry. While ensuring high transmission efficiency and mobility, electric drive axles are constantly developing towards a higher degree of integration, occupying less space and effectively reducing their own weight. As one of the important development directions of commercial vehicle electric drive systems, integrated electric drive axles are composed of motors, transmissions, differentials, axles, etc., with compact structure and high transmission efficiency, but due to the limited installation space of the chassis, their own layout and installation are very difficult. Many special-purpose commercial vehicles have multi-power output function requirements. At present, commercial vehicle electric drive axles are installed under the springs, with compact space, unable to be arranged or low multi-power transmission efficiency and poor reliability, and cannot meet the requirements of multi-functional power output and high reliability of commercial vehicles. The central vertical electric drive system installed on the springs also faces the demand for multi-power output. The central vertical electric drive system installed on the springs also faces the demand for multi-power output. Generally, additional transmission modules need to be added, which not only increases the weight of the vehicle, but also occupies the space of the vehicle, which does not meet the vehicle design requirements of lightweighting and increasing the cruising range. Summary of the invention

[0003] In view of the above problems, the purpose of the utility model is to provide an integrated multi-power output transmission assembly, which solves the reliability problem of multi-power output of existing commercial vehicle transmissions by rationally arranging the component structure.

[0004] To achieve the above object, the technical solution adopted by the present invention includes:

[0005] An integrated multi-power output transmission assembly includes a transmission housing and a motor connected to each other, wherein a motor input shaft coaxially connected to the motor is provided in the transmission housing, and further includes a first power output assembly, wherein the first power output assembly includes a first power output shaft provided in the transmission housing, wherein one end of the first power output shaft passes through a side wall of the transmission housing, and a power output gear meshing with the motor input shaft gear is coaxially sleeved near one end of the first power output shaft, and a control unit is connected near the other end of the first power output shaft; further includes a second power output assembly, wherein the second power output assembly includes a gear shaft and a second power output shaft provided in the transmission housing, wherein one end of the second power output shaft passes through the side wall of the transmission housing, and a first gear gear, a gear engaging mechanism and a second gear gear are coaxially sleeved on the second power output shaft in sequence, and three gears are coaxially fixed on the gear shaft and meshed with the first gear gear, the motor input shaft gear and the second gear gear in sequence.

[0006] Preferably, the control unit comprises a cylinder shaft, on which a sleeve spring and a shift fork are sequentially arranged, and the shift fork is connected to the first power output shaft near the other end thereof.

[0007] Preferably, it also includes a sealing ring which is limitedly sleeved on the end of the cylinder shaft away from the shift fork.

[0008] Preferably, a sliding sleeve is coaxially splined near the outer circumference of the other end of the first power output shaft, and the shift fork is connected to the first power output shaft via the sliding sleeve.

[0009] Preferably, a limiting ring is provided on the power output gear and the first power output shaft at one end of the first power output shaft, and on the sliding sleeve and the first power output shaft at the other end of the first power output shaft.

[0010] Preferably, one end of the first power output shaft is coaxially connected to a bearing that is interference fit with the transmission housing.

[0011] Preferably, the other end of the first power output shaft is coaxially connected to a bearing that is interference fit with the transmission housing.

[0012] Preferably, the power output gear is coaxially loosely sleeved on the first power output shaft via a needle bearing.

[0013] Preferably, bearings which are interference fit with the transmission housing are coaxially connected at both ends of the gear shaft.

[0014] Preferably, bearings which are interference fit with the transmission housing are coaxially connected at both ends of the second power output shaft.

[0015] Compared with the prior art, the advantages of the present invention are:

[0016] (1) The integrated multi-power output transmission assembly of the utility model integrates the first power output component and the second power output component into the transmission through the reasonable arrangement of the component structure. The first power output shaft transmits power to the outside in the working state, and other functions can be realized according to actual needs. The axial dimension of the transmission assembly is shortened, and the overall integrated structure is more compact, which reduces the difficulty of arranging the transmission assembly on the whole vehicle, greatly reduces the risk of interference with other structures, and has strong reliability.

[0017] (2) The integrated multi-power output transmission assembly and transmission assembly of the utility model, through the reasonable arrangement of the component structure, the power output gear and the motor input shaft gear are always meshed. When the transmission assembly is in the working state, the second power output component of the gearbox is engaged in any gear position, which will not affect the gear engagement and power take-off function of the first power output component, thereby meeting the needs of parking power take-off and driving power take-off at the same time.

[0018] (3) The integrated multi-power output transmission assembly and transmission assembly of the utility model shorten the wheelbase of the power transmission inside the transmission, reduce power loss, and further improve the overall efficiency, thereby achieving the effect of increasing the cruising range and significantly reducing the quality and production cost of the transmission assembly. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The accompanying drawings are used to provide a further understanding of the utility model and constitute a part of the specification. Together with the following specific embodiments, they are used to explain the present invention, but do not constitute a limitation of the present invention. In the accompanying drawings:

[0020] Figure 1 The structural schematic diagram of the integrated multi-power output transmission assembly of the present invention is shown in the figure as follows:

[0021] 1. First power output shaft, 2. Power output gear, 3. Sleeve, 4. Bearing, 5. Limiting ring, 6. Cylinder shaft, 7. Shift fork, 8. Spring, 9. Sealing ring, 10. Transmission housing, 11. Motor, 12. Motor input shaft gear, 13. Motor input shaft, 14 Second power output shaft, 15 First gear gear, 16 Shifting mechanism, 17 Second gear gear, 18 Gear shaft. DETAILED DESCRIPTION

[0022] The invention is not limited to the following specific embodiments, and all equivalent changes made on the basis of the technical solution of this application fall within the protection scope of the invention.

[0023] It should be noted that the directional terms mentioned in this article are consistent with the specific directions on the paper in the drawings of the specification or the corresponding directions in the space shown in the drawings; all components and equipment in this utility model, unless otherwise specified, are all components and equipment known in the prior art.

[0024] Example

[0025] The present embodiment discloses an integrated multi-power output transmission assembly, including a transmission housing 10 and a motor 11 connected to each other, wherein a motor input shaft 13 coaxially connected to the motor 11 is provided in the transmission housing 10, and the transmission housing 10 also includes a first power output assembly, wherein the first power output assembly includes a first power output shaft 1 provided in the transmission housing 10, wherein one end of the first power output shaft 1 passes through a side wall of the transmission housing 10, and a power output gear 2 meshing with the motor input shaft gear 12 is coaxially sleeved near one end of the first power output shaft 1, and a control unit is connected near the other end of the first power output shaft 1; and the second power output assembly also includes a gear shaft 18 provided in the transmission housing 10 and a second power output shaft 14, wherein one end of the second power output shaft 14 passes through the side wall of the transmission housing 10, and a first gear gear 15, a gear engaging mechanism 16 and a second gear gear 17 are coaxially sleeved on the second power output shaft 14 in sequence, and three gears are coaxially fixed on the gear shaft 18 and meshed with the first gear gear 15, the motor input shaft gear 12 and the second gear gear 17 in sequence.

[0026] Its function is as follows: the motor 11 drives the motor input shaft gear 12 to rotate, and the first power output shaft 1 is linked to rotate through the power output gear 2 meshing with the motor input shaft gear 12. The first power output shaft 1 transmits power outward in the working state, shortening the axial size of the transmission assembly; at the same time, the first gear gear 15 and the second gear gear 17 are linked to rotate through the gear on the gear shaft 18 meshing with the motor input shaft gear 12, and any gear gear is selected through the gear engagement mechanism 16 to achieve gear engagement, so as to link the second power output shaft 14 to rotate. The overall integration has a more compact structure, reduces the difficulty of arranging the commercial vehicle electric drive system assembly on the whole vehicle, greatly reduces the risk of interference with other structures, and has strong reliability.

[0027] The second power output assembly disclosed in this embodiment is used to drive the movement of the commercial vehicle.

[0028] The first power output assembly disclosed in this embodiment can realize other functions according to actual needs. When applied to a dump truck, a hydraulic oil pump can be installed at the rear end of the first power output assembly, wherein the rear end of the first power output shaft 1 is matched with the oil pump input shaft through a spline. When the first power output assembly is working, the oil pump extracts the oil in the oil tank and transports it to the hydraulic control valve to push the lifting arm to realize the unloading function of the dump truck; when applied to a sprinkler truck, a bevel gear pair, a universal joint and other structures can be installed at the rear end of the first power output assembly to amplify the output torque of the first power output assembly and change the transmission direction. A water pump is connected at the end to realize the sprinkler function of the sprinkler truck.

[0029] The control unit comprises a cylinder shaft 6, on which a sleeve spring 8 and a shift fork 7 are arranged in sequence, and the shift fork 7 is connected to the first power output shaft 1 near the other end thereof; and further comprises a sealing ring 9 which is limitedly sleeved on the end of the cylinder shaft 6 away from the shift fork 7.

[0030] The first power output shaft 1 is coaxially splined with a sleeve 3 near the outer circumference of the other end thereof, and the shift fork 7 is connected to the first power output shaft 1 through the sleeve 3; the power output gear 2 and the first power output shaft 1 at one end of the first power output shaft 1, and the sleeve 3 and the first power output shaft 1 at the other end of the first power output shaft 1 are provided with a limit ring 5; the first power output shaft 1 is coaxially connected with a bearing 4 that is interference-fitted with the transmission housing 10 at one end; the first power output shaft 1 is coaxially connected with a bearing 4 that is interference-fitted with the transmission housing 10 at the other end; the power output gear 2 is coaxially sleeved on the first power output shaft 1 through a needle bearing. The gear shaft 18 is coaxially connected with a bearing 4 that is interference-fitted with the transmission housing 10 at both ends, and the second power output shaft 14 is coaxially connected with a bearing 4 that is interference-fitted with the transmission housing 10 at both ends.

[0031] When the electric drive system of the commercial vehicle is in working state, the cylinder supplies air, the cylinder shaft 6 drives the shift fork 7 to move in the air supply direction, the spring 8 is compressed, the sealing ring 9 ensures the continuous and stable air pressure during the movement of the cylinder shaft 6, and the shift fork 7 pushes the sliding sleeve 3 to move axially, so that the sliding sleeve 3 is closely matched with the first power output shaft 1 and the power output gear 2 through the internal and external splines, so that the first power output assembly is engaged;

[0032] The first power output assembly is engaged, and since the power output gear 2 is always meshed with the motor input shaft gear 12, the commercial vehicle electric drive system is engaged in any gear, which does not affect the motor output power transmitted to the first power output shaft 1 through the power output gear 2, and can simultaneously meet the needs of driving power take-off and parking power take-off; the cylinder stops supplying air, the spring 8 rebounds, drives the cylinder shaft 6 and the shift fork 7 to move in the opposite direction, and the shift fork 7 pushes the sliding sleeve 3 to move axially, so that the spline of the sliding sleeve 3 is disengaged from the power output gear 2, the first power output assembly is disengaged, and the motor output power is no longer transmitted to the first power output shaft 1, and the commercial vehicle electric drive system has no power consumption;

[0033] The first power output assembly is integrated into the transmission housing 10 of the commercial vehicle, has a compact structure, reduces the number of system components, shortens the axial dimension of the commercial vehicle electric drive system, reduces the difficulty of layout, and greatly reduces the quality and cost of the commercial vehicle electric drive system. At the same time, the wheelbase of the internal power transmission of the commercial vehicle electric drive system is shortened, the power loss is reduced, and the overall efficiency is further improved, thereby achieving the effect of increasing the cruising range.

[0034] The preferred embodiments of the present disclosure are described in detail above in conjunction with the accompanying drawings; however, the present disclosure is not limited to the specific details in the above embodiments. Within the technical concept of the present disclosure, a variety of simple modifications can be made to the technical solution of the present disclosure, and these simple modifications all fall within the protection scope of the present disclosure.

[0035] It should also be noted that the various specific technical features described in the above specific embodiments can be combined in any suitable manner without contradiction. In order to avoid unnecessary repetition, the present disclosure will not further describe various possible combinations. In addition, the various different embodiments disclosed in this solution can also be combined arbitrarily, as long as they do not violate the ideas of this disclosure, they should also be regarded as the contents invented by this disclosure.

Claims

1. An integrated multi-power output transmission assembly, comprising a transmission housing (10) and a motor (11) connected to each other, wherein a motor input shaft (13) coaxially connected to the motor (11) is provided in the transmission housing (10), characterized in that: The first power output assembly also includes a first power output assembly, the first power output assembly including a first power output shaft (1) arranged in a transmission housing (10), one end of the first power output shaft (1) passing through a side wall of the transmission housing (10), a power output gear (2) coaxially sleeved near one end of the first power output shaft (1) and meshing with a motor input shaft gear (12), and a control unit connected near the other end of the first power output shaft (1); The invention also comprises a second power output assembly, wherein the second power output assembly comprises a gear shaft (18) and a second power output shaft (14) arranged in a transmission housing (10), one end of the second power output shaft (14) passes through a side wall of the transmission housing (10), a first gear position gear (15), a gear engaging mechanism (16) and a second gear position gear (17) are coaxially sleeved on the second power output shaft (14) in sequence, and three gears are coaxially fixed on the gear shaft (18) and mesh with the first gear position gear (15), the motor input shaft gear (12) and the second gear position gear (17) in sequence.

2. The integrated multi-power output transmission assembly as claimed in claim 1, characterized in that: The control unit comprises a cylinder shaft (6), on which a sleeve spring (8) and a shift fork (7) are arranged in sequence, and the shift fork (7) is connected to the first power output shaft (1) near the other end thereof.

3. The integrated multi-power output transmission assembly as claimed in claim 2, characterized in that: It also includes a sealing ring (9) which is provided with a limiting sleeve on the end of the cylinder shaft (6) away from the shift fork (7).

4. The integrated multi-power output transmission assembly according to any one of claims 1 to 3, characterized in that: A sliding sleeve (3) is coaxially splined near the outer circumference of the other end of the first power output shaft (1), and the shift fork (7) is connected to the first power output shaft (1) via the sliding sleeve (3).

5. The integrated multi-power output transmission assembly as claimed in claim 4, characterized in that: The power output gear (2) and the first power output shaft (1) at one end of the first power output shaft (1), as well as the sliding sleeve (3) and the first power output shaft (1) at the other end of the first power output shaft (1) are both provided with a limiting ring (5).

6. The integrated multi-power output transmission assembly as claimed in claim 5, characterized in that: One end of the first power output shaft (1) is coaxially connected to a bearing (4) which is interference-fitted with the transmission housing (10).

7. The integrated multi-power output transmission assembly as claimed in claim 5, characterized in that: The other end of the first power output shaft (1) is coaxially connected to a bearing (4) which is interference-fitted with the transmission housing (10).

8. The integrated multi-power output transmission assembly as claimed in claim 5, characterized in that: The power output gear (2) is coaxially sleeved on the first power output shaft (1) via a needle bearing.

9. The integrated multi-power output transmission assembly as claimed in claim 1, characterized in that: Both ends of the gear shaft (18) are coaxially connected to bearings (4) which are interference-fitted with the transmission housing (10).

10. The integrated multi-power output transmission assembly as claimed in claim 1, characterized in that: Both ends of the second power output shaft (14) are coaxially connected to bearings (4) which are interference-fitted with the transmission housing (10).

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