Power takeoff assembly and vehicle

Abstract

The utility model discloses a power takeoff assembly and a vehicle, the power takeoff assembly is used for an electric drive axle, and the power takeoff assembly comprises a shell, a power takeoff assembly and a power takeoff assembly, the first shaft is sleeved with the first gear, and at least part of the first gear extends out of the opening to be meshed with a second gear of the electric drive axle; the hydraulic pump is provided with a second shaft, the second shaft is arranged in the first shaft in a sleeved mode, the connecting piece is arranged in the containing cavity, and the connecting piece can move in the axial direction of the first shaft; and the driving assembly is used for driving the connecting piece to move towards the second shaft so as to be connected with the second shaft. According to the power takeoff assembly, the integration degree is high, extra occupied space is reduced, loss in the power transmission process is reduced, the power transmission efficiency is improved, the driving assembly can flexibly control the position of the connecting piece so as to meet the requirements of different working conditions, the structure is simple, disassembly, assembly and maintenance are convenient, and the later maintenance cost is reduced.

Description

Technical Field

[0001] This utility model relates to the field of vehicle manufacturing technology, and in particular to a power take-off assembly and a vehicle. Background Technology

[0002] Related technologies indicate that a power take-off (PTO), also known as a power output device, generally includes one or more sets of transmission gears, as well as a housing, clutch, signal switches, etc. In traditional fuel-powered commercial vehicles, the PTO is usually connected to the low-gear or auxiliary gearbox output shaft of the transmission, and outputs power to external working devices. It is widely used in the additional functions of vehicles, such as driving the high-pressure oil pump of a dump truck to achieve the self-unloading function; driving the water pump of a fire truck for efficient water supply; and driving the hydraulic motor of a mixer truck to rotate the mixing tank, etc.

[0003] With the continuous advancement of new energy commercial vehicle technology, more and more OEMs are gradually adopting electric drive axles to replace core components such as engines, transmissions, and drive axles in traditional fuel-powered heavy trucks. Electric drive axles integrate the motor, electronic control unit, reducer, and drive axle to achieve efficient power output and integrated braking control for the vehicle.

[0004] Since the gearbox has been eliminated, in order to meet the additional functions of the vehicle (such as self-unloading, efficient water supply, and mixing), new energy commercial vehicles typically use a power take-off motor and a hydraulic pump (hydraulic motor) to achieve these functions.

[0005] In existing technologies, the use of a power take-off motor results in higher costs and more complex structures; moreover, the larger size of the power take-off motor is not conducive to the spatial arrangement of the entire vehicle. Utility Model Content

[0006] This utility model aims to solve at least one of the technical problems existing in the prior art. To this end, this utility model proposes a power take-off (PTO) assembly that has high integration, reduces additional space occupation, lowers power transmission losses, and improves power transmission efficiency.

[0007] This utility model also proposes a vehicle having the above-mentioned power take-off assembly.

[0008] According to a first aspect of the present invention, a power take-off assembly is used in an electric drive axle. The power take-off assembly includes: a housing having a receiving cavity and an opening communicating with the receiving cavity; a first gear and a first shaft, the first gear being sleeved on the first shaft, at least a portion of the first gear extending out of the opening to mesh with a second gear of the electric drive axle; a hydraulic pump and a connector, the hydraulic pump being disposed on the housing and located on one side of the first shaft in the axial direction, the hydraulic pump having a second shaft sleeved within the first shaft, the connector being disposed within the receiving cavity and located on the other side of the first shaft in the axial direction, the connector being movable along the axial direction of the first shaft; and a drive assembly disposed on the housing, the drive assembly being used to drive the connector to move toward the second shaft to connect with the second shaft.

[0009] According to the power take-off assembly of this utility model, by means of a connector that is movable in the axial direction of the first shaft and controlled by a drive component, the integration is high, the additional space occupation is reduced, the loss in the power transmission process is reduced, the power transmission efficiency is improved, the drive component can flexibly control the position of the connector to adapt to different working conditions, and the structure is simple, easy to disassemble and repair, and reduces the later maintenance cost.

[0010] In some embodiments, the drive assembly forms a ventilation channel and an inflation channel. One end of the ventilation channel has an air inlet connected to the vehicle's air circuit, and the other end of the ventilation channel is connected to the inflation channel to inflate the inflation channel.

[0011] In some embodiments, the inflation channel includes a first inflation section and a second inflation section connected in sequence. The first inflation section extends along the axial direction of the first axis, and the second inflation section extends along an axial direction perpendicular to the first axis. The first inflation section and the second inflation section are in communication.

[0012] In some embodiments, the drive assembly includes: an air intake member disposed on the housing, an air inlet formed on the air intake member, and an air outlet formed on the air intake member; a first air pipe, one end of the first air pipe connected to the air intake member and communicating with the air outlet, at least a portion of the ventilation channel being formed within the first air pipe; a second air pipe disposed on the housing, one end of the second air pipe connected to the other end of the first air pipe, the other end of the second air pipe connected to the housing, and a second inflation section defined within the second air pipe; and a solenoid valve disposed on the air intake member to control the opening and closing of the ventilation channel.

[0013] In some embodiments, the power take-off assembly further includes: a switch assembly, wherein the housing forms a switch cavity, the switch assembly is disposed within the switch cavity and located between the first air pipe and the second air pipe, the switch assembly includes: a switch element and a stop block, the switch element being connected to a vehicle control assembly to drive the stop block to move within the switch cavity to control the on / off state of the first air pipe and the second air pipe; a sealing ring, the sealing ring being sleeved on the stop block; and an elastic element, the elastic element being disposed on the side of the stop block opposite to the switch element, the elastic element always having a force that causes the stop block to move toward the switch element.

[0014] In some embodiments, one end of the second shaft is connected to the hydraulic pump, the other end of the second shaft has a first spline portion, the connector has a second spline portion, and the second shaft and the connector are connected by the first spline portion and the second spline portion to limit the relative displacement of the connector and the second shaft in the circumferential direction.

[0015] In some embodiments, the power take-off assembly further includes a reset member, which is sleeved on the outer periphery of the first shaft and connected to the connector, and the reset member always has a force that moves the connector away from the second shaft.

[0016] In some embodiments, the power take-off assembly further includes an oil seal assembly disposed within the receiving cavity. The oil seal assembly includes an oil seal element and an oil seal cover. The oil seal element is sleeved on the outer peripheral side of the connector and fits against the outer peripheral surface of the connector. The oil seal cover is connected to the oil seal element so that the oil seal element always fits against the outer peripheral surface of the connector.

[0017] In some embodiments, the housing includes a housing and a cover, the cover being disposed on the other side of the housing in the axial direction of the first axis, and at least a portion of the ventilation channel is formed on the cover.

[0018] The vehicle according to a second aspect of the present invention includes: a power take-off assembly according to a first aspect of the present invention; an electric drive axle having a second gear, wherein a first gear of the power take-off assembly meshes with the second gear; a control assembly electrically connected to a switch of the power take-off assembly; and an air passage communicating with an air inlet of the power take-off assembly.

[0019] The vehicle according to this utility model improves the overall performance of the vehicle by setting the power take-off assembly of the first aspect, thereby achieving efficient power transmission, improving the reliability and safety of the vehicle, enhancing the compactness of the vehicle's internal structure, and facilitating maintenance.

[0020] Additional aspects and advantages of this invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the internal structure of the power take-off assembly according to an embodiment of the present utility model;

[0022] Figure 2 yes Figure 1 A schematic diagram of one side of the power take-off assembly shown;

[0023] Figure 3 yes Figure 1 The diagram shows the other side of the power take-off assembly.

[0024] Figure label:

[0025] 100. Power take-off assembly;

[0026] 1. Outer shell; 11. Housing; 12. Cover; 13. Receiving cavity; 14. Opening; 15. Switching cavity;

[0027] 2. First gear; 3. First shaft;

[0028] 4. Hydraulic pump; 41. Second shaft;

[0029] 5. Connecting parts; 51. Snap rings;

[0030] 6. Drive assembly; 61. Air inlet; 611. Air inlet; 612. Air outlet; 62. First air pipe; 63. Second air pipe; 64. Solenoid valve;

[0031] 7. Switch assembly; 71. Switching element; 72. Stop block; 73. Nut seat; 74. Sealing ring; 75. Elastic element;

[0032] 8. Reset component;

[0033] 9. Oil seal assembly; 91. Oil seal component; 92. Oil seal cover;

[0034] 10. Inflation channel; 101. First inflation section; 102. Second inflation section;

[0035] 20. Bolt; 30. Bearing. Detailed Implementation

[0036] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain this utility model, and should not be construed as limiting this utility model.

[0037] The following is for reference. Figures 1-3 The power take-off assembly 100 according to a first aspect embodiment of the present invention is described.

[0038] like Figures 1-3 As shown, the power take-off assembly 100 according to the first aspect of the present invention includes: a housing 1, a first gear 2, a first shaft 3, a hydraulic pump 4, a connector 5, and a drive assembly 6.

[0039] Specifically, the power take-off assembly 100 is used for the electric drive axle. The housing 1 has a receiving cavity 13 and an open opening 14 communicating with the receiving cavity 13. The first gear 2 is sleeved on the first shaft 3, and at least a portion of the first gear 2 extends out of the open opening 14 to mesh with the second gear of the electric drive axle. The hydraulic pump 4 is located on the housing 1 and on one side of the first shaft 3 in the axial direction. The hydraulic pump 4 has a second shaft 41, which is sleeved in the first shaft 3. The connecting member 5 is located in the receiving cavity 13 and on the other side of the first shaft 3 in the axial direction. The connecting member 5 is movable along the axial direction of the first shaft 3. The drive assembly 6 is located on the housing 1 and is used to drive the connecting member 5 to move toward the second shaft 41 to connect with the second shaft 41.

[0040] Understandably, the first gear 2 is mounted on the first shaft 3, and the first gear 2 and the first shaft 3 are coaxially arranged and connected by bolts 20. Part of the first gear 2 extends out of the opening 14 of the housing 1 to mesh with the second gear on the electric drive bridge. The hydraulic pump 4 is connected to the housing 1, and the second shaft 41 of the hydraulic pump 4 is nested inside the first shaft 3. The first shaft 3 and the second shaft 41 are coaxially arranged, which saves space, helps to simplify the transmission path, and improves the compactness of the power take-off assembly 100. The connecting piece 5 can move along the axial direction of the first shaft 3. The function of the connecting piece 5 is to connect or disconnect with the second shaft 41 of the hydraulic pump 4 as needed, thereby controlling the working state of the hydraulic pump 4. The drive assembly 6 drives the connecting piece 5 to move toward or away from the second shaft 41.

[0041] According to the embodiment of the present utility model, the power take-off assembly 100 is equipped with a connector 5 that is movable in the axial direction of the first shaft 3, and the movement of the connector 5 is controlled by the drive component 6. It has a high degree of integration, reduces additional space occupation, reduces power transmission loss, and improves power transmission efficiency. The drive component 6 can flexibly control the position of the connector 5 to adapt to different working conditions. It also has a simple structure, is easy to disassemble and repair, and reduces later maintenance costs.

[0042] Furthermore, bearings 30 are provided at both ends of the first shaft 3 to support the first shaft 3.

[0043] In some embodiments of this invention, the drive assembly 6 has a ventilation channel and an inflation channel 10. One end of the ventilation channel has an air inlet 611 connected to the vehicle's air circuit. The other end of the ventilation channel is connected to the inflation channel 10 to inflate the inflation channel 10. It is understood that the ventilation channel guides gas from the air source to the inflation channel 10, providing power for the movement of the drive connector 5. When the gas is pressurized sufficiently in the inflation channel 10, it pushes the connector 5 to move. Therefore, the use of pneumatics improves the reliability and safety of the power take-off assembly 100, and reduces the probability of mechanical wear and failure.

[0044] In some embodiments of this invention, the inflation channel 10 includes a first inflation section 101 and a second inflation section 102 connected in sequence. The first inflation section 101 extends along the axial direction of the first axis 3, and the second inflation section 102 extends along an axis perpendicular to the first axis 3. The first inflation section 101 and the second inflation section 102 are connected. Thus, by rationally planning the gas flow path, a higher space utilization rate is achieved.

[0045] In some embodiments of this utility model, such as Figures 1-3 As shown, the drive assembly 6 includes: an air inlet 61, which is disposed on the housing 1, with an air inlet 611 formed on the air inlet 61 and an air outlet 612 formed on the air inlet 61; a first air pipe 62, one end of which is connected to the air inlet 61 and communicates with the air outlet 612, and at least a portion of the ventilation channel is formed within the first air pipe 62; a second air pipe 63, which is disposed on the housing 1, with one end of which is connected to the other end of the first air pipe 62 and the other end of which is connected to the housing 1, and a second inflation section 102 defined within the second air pipe 63; and a solenoid valve 64, which is disposed on the air inlet 61 to control the opening and closing of the ventilation channel. Understandably, the solenoid valve 64 controls the opening and closing of the ventilation channel. When the hydraulic pump 4 needs to be started, the solenoid valve 64 opens to introduce gas from the first air pipe 62 into the second air pipe 63. When the hydraulic pump 4 is not needed, the solenoid valve 64 closes, cutting off the airflow and resetting the connector 5. Thus, the solenoid valve 64 allows for flexible control of the ventilation channel, facilitating operation. The drive assembly 6 has a simple structure, ingenious design, and is easy to maintain and repair.

[0046] Preferably, the hydraulic pump 4 is connected to the housing 1 by bolts 20.

[0047] In some embodiments of this utility model, such as Figure 3As shown, the power take-off assembly 100 also includes: a switch assembly 7, the housing 1 having a switch cavity 15, the switch assembly 7 being disposed within the switch cavity 15 and located between the first air pipe 62 and the second air pipe 63, the switch assembly 7 including: a switch element 71 and a stop block 72, the switch element 71 being connected to the vehicle's control assembly to drive the stop block 72 to move within the switch cavity 15 to control the on / off state of the first air pipe 62 and the second air pipe 63; a sealing ring 74, the sealing ring 74 being sleeved on the stop block 72; and an elastic element 75, the elastic element 75 being disposed on the side of the stop block 72 away from the switch element 71, the elastic element 75 always having a force that causes the stop block 72 to move toward the switch element 71. Understandably, when the hydraulic pump 4 needs to be started, the vehicle control assembly sends a start signal to the switch 71. Upon receiving the signal, the switch 71 drives the stop block 72 to overcome the resistance of the elastic element 75 and move axially within the switch chamber 15, opening the gas passage between the first air pipe 62 and the second air pipe 63. Compressed air flows from the first air pipe 62 into the second air pipe 63 and finally into the inflation passage 10, pushing the connector 5 to actuate and causing the hydraulic pump 4 to start working. When the hydraulic pump 4 is no longer needed, the vehicle control assembly sends a stop signal, the switch 71 stops driving the stop block 72, the elastic element 75 pushes the stop block 72 back to its original position, cutting off the gas passage, and the hydraulic pump 4 stops working. This achieves precise control of the gas supply and demand, further enhancing the reliability of the power take-off assembly 100.

[0048] Reference Figure 3 As shown, a mounting opening is formed at the end of the switch cavity 15 away from the elastic member 75, and a nut seat 73 is provided at the position of the mounting opening, and a switch member 71 is provided on the nut seat 73.

[0049] In some embodiments of this utility model, one end of the second shaft 41 is connected to the hydraulic pump 4, and the other end of the second shaft 41 forms a first spline portion. The connecting member 5 forms a second spline portion. The second shaft 41 and the connecting member 5 are connected by the first spline portion and the second spline portion to limit the relative displacement of the connecting member 5 and the second shaft 41 in the circumferential direction. It can be understood that the second shaft 41 and the connecting member 5 are connected by a spline engagement to limit their relative displacement in the circumferential direction. When the drive assembly 6 pushes the connecting member 5 toward the second shaft 41, the first spline portion and the second spline portion mesh with each other, fixing the connecting member 5 and the second shaft 41 together in the circumferential direction and preventing relative rotation. Once the splines are fully engaged, the rotational motion of the second shaft 41 is directly transmitted to the connecting member 5, causing the hydraulic pump 4 to start working. Conversely, when disconnection is required, the drive assembly 6 will reverse its action, separating the connecting member 5 from the second shaft 41, and the hydraulic pump 4 will stop working. This improves transmission efficiency, enhances the reliability of the power take-off assembly 100, and results in a simple structure and good stability.

[0050] Furthermore, a retaining ring 51 is provided on the outer circumferential side of the connector 5.

[0051] In some embodiments of this utility model, such as Figure 1 As shown, the power take-off assembly 100 also includes a reset member 8, which is sleeved on the outer periphery of the first shaft 3 and connected to the connecting member 5. The reset member 8 always exerts a force on the connecting member 5 in a direction away from the second shaft 41. It can be understood that the reset member 8 always applies a force to the connecting member 5 in a direction away from the second shaft 41 to ensure that the connecting member 5 can automatically reset and separate from the second shaft 41 when the hydraulic pump 4 is not required to operate. This ensures that the connecting member 5 can automatically reset without external driving force, improving the automation level of the power take-off assembly 100, resulting in low production and maintenance costs and high reliability.

[0052] Here, preferably, the reset element 8 is a spring.

[0053] In some embodiments of this utility model, such as Figure 1 As shown, the power take-off assembly 100 also includes an oil seal assembly 9, which is disposed within the receiving cavity 13. The oil seal assembly 9 includes an oil seal element 91 and an oil seal cover 92. The oil seal element 91 is sleeved on the outer peripheral side of the connector 5 and fits against the outer peripheral surface of the connector 5. The oil seal cover 92 is connected to the oil seal element 91 so that the oil seal element 91 always fits against the outer peripheral surface of the connector 5. It can be understood that the oil seal assembly 9 can maintain a good sealing effect under dynamic conditions, ensuring the stability and cleanliness of the internal environment of the system. By effectively isolating external contaminants, the oil seal assembly 9 can significantly extend the service life of internal mechanical components and reduce maintenance requirements. Furthermore, the oil seal assembly 9 is used to ensure the sealing between the connector 5 and the receiving cavity 13, preventing gas leakage.

[0054] In some embodiments of this utility model, such as Figure 1 As shown, the outer casing 1 includes a housing 11 and a cover 12. The cover 12 covers the housing 11 on the other side of the first shaft 3 in the axial direction. At least a portion of the ventilation channel and at least a portion of the ventilation channel are formed on the cover 12. In this way, external contaminants are prevented from entering, and effective protection of the internal components is achieved, thereby improving the compactness of the power take-off assembly 100.

[0055] Here, the shell 11 and the cover 12 are fixedly connected by bolts 20.

[0056] The vehicle according to a second aspect of the present invention includes a power take-off assembly 100 according to the first aspect of the present invention described above.

[0057] Specifically, the vehicle includes: an electric drive axle, a control assembly, an air circuit, and a power take-off (PTO) assembly 100 according to the first aspect embodiment of the present invention. The electric drive axle has a second gear, the first gear 2 of the PTO assembly 100 meshes with the second gear, the control assembly is electrically connected to the switch 71 of the PTO assembly 100, and the air circuit is connected to the air inlet 611 of the PTO assembly 100. This achieves efficient power transmission, improves the reliability and safety of the vehicle, enhances the compactness of the vehicle's internal structure, and facilitates maintenance.

[0058] The vehicle according to the present utility model improves the overall performance of the vehicle by setting the power take-off assembly 100 of the first aspect embodiment, thereby achieving efficient power transmission, improving the reliability and safety of the vehicle, enhancing the compactness of the vehicle's internal structure, and facilitating maintenance.

[0059] The following will refer to Figures 1-3 The working process of a power take-off assembly 100 according to a specific embodiment of the present invention is described.

[0060] When the driver presses the power take-off assembly 100 engagement button in the cab, the solenoid valve 64 receives an electrical signal from the vehicle control assembly. Air flows into the solenoid valve 64 from the air inlet 611, then into the first air pipe 62 from the air outlet 612 of the solenoid valve 64. It then travels along the ventilation channel into the switching chamber 15, thereby pushing the stop block 72 to compress the elastic element 75, causing it to move forward. After the elastic element 75 has moved a certain distance, it connects with the second air pipe 63 and then enters the inflation channel 10. As the pressure continuously increases, the compressed air... The connecting piece 5 is pushed to compress the reset piece 8 and move forward. The connecting piece 5 is engaged with the second shaft 41 of the hydraulic pump 4. At this time, the hydraulic pump 4, the connecting piece 5, the first shaft 3 and the first gear 2 are connected together. The power of the second gear of the electric drive axle is transmitted to the hydraulic pump 4 through the first gear 2, thereby driving the hydraulic pump 4 to rotate and drive the external working device, such as driving the high-pressure oil pump of the dump truck to realize the self-unloading function. At this time, the stop block 72 releases the contact of the switch piece 71, the switch piece 71 closes, and the engagement status of the power take-off assembly 100 is displayed on the screen.

[0061] When the driver presses the disconnect button of the power take-off assembly 100, the solenoid valve 64 receives an electrical signal from the vehicle control assembly, disconnects the air passage of the air inlet 611 and releases pressure; the air in the first air pipe 62 is cut off, the elastic element 75 pushes against the stop block 72 and moves in the opposite direction, thereby cutting off the compressed air in the second air pipe 63; since pressure cannot be built up, the reset element 8 pushes the connecting element 5 to move in the opposite direction, thereby disconnecting the connection with the second shaft 41 of the hydraulic pump 4, causing the first gear 2 to rotate freely and the hydraulic pump 4 to stop working; at this time, the stop block 72 pushes against the contact of the switch element 71, the switch element 71 is disconnected, and the disconnected state of the power take-off assembly 100 is displayed on the screen.

[0062] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0063] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, "a plurality of" means two or more, unless otherwise explicitly specified.

[0064] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection, an electrical connection, or a communication connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0065] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0066] Although embodiments of the present invention have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the claims and their equivalents.

Claims

1. A power take-off assembly characterized by, The power take-off assembly is used for an electric drive axle, and comprises: a housing, an accommodating cavity and an open port being formed in the housing and being communicated with the accommodating cavity; a first gear and a first shaft, the first gear being sleeved on the first shaft, at least part of the first gear extending out of the open port to engage with a second gear of the electric drive axle; a hydraulic pump and a connecting member, the hydraulic pump being arranged on the housing and being located at one side of the first shaft in an axial direction, the hydraulic pump having a second shaft, the second shaft being sleeved in the first shaft, the connecting member being arranged in the accommodating cavity and being located at the other side of the first shaft in the axial direction, the connecting member being movable along the axial direction of the first shaft; a driving assembly, the driving assembly being arranged on the housing, the driving assembly being used to drive the connecting member to move towards the second shaft to be connected with the second shaft.

2. The take-off assembly of claim 1, wherein, The driving assembly is formed with a ventilation passage and an inflation passage, one end of the ventilation passage is formed with an air inlet, the air inlet is connected with an air circuit of a vehicle, the other end of the ventilation passage is communicated with the inflation passage to inflate the inflation passage.

3. The take-off assembly of claim 2, wherein, The inflation passage comprises a first inflation section and a second inflation section connected in sequence, the first inflation section extends along the axial direction of the first shaft, the second inflation section extends along a direction perpendicular to the axial direction of the first shaft, the first inflation section is communicated with the second inflation section.

4. The take-off assembly of claim 3, wherein, The driving assembly comprises: an air inlet member, the air inlet being formed on the air inlet member, the air outlet being formed on the air inlet member; a first air pipe, one end of the first air pipe being connected with the air inlet member and being communicated with the air outlet, at least part of the ventilation passage being formed in the first air pipe; a second air pipe, the second air pipe being arranged on the housing, one end of the second air pipe being connected with the other end of the first air pipe, the other end of the second air pipe being connected with the housing, the second air pipe defining the second inflation section; a solenoid valve, the solenoid valve being arranged on the air inlet member to control the opening and closing of the ventilation passage.

5. The take-off assembly of claim 4, wherein, Further comprising: a switch assembly, the housing being formed with a switch cavity, the switch assembly being arranged in the switch cavity and being located between the first air pipe and the second air pipe, the switch assembly comprising: a switch member and a stopper, the switch member being connected with a control assembly of a vehicle to drive the stopper to move in the switch cavity to control the opening and closing of the first air pipe and the second air pipe; a sealing ring, the sealing ring being sleeved on the stopper; a resilient member, the resilient member being arranged on a side of the stopper away from the switch member, the resilient member always having a force to move the stopper towards the switch member.

6. The power take-off assembly of any one of claims 1-5, wherein, One end of the second shaft is connected with the hydraulic pump, the other end of the second shaft is formed with a first spline part, the connecting member is formed with a second spline part, the second shaft and the connecting member are connected through cooperation of the first spline part and the second spline part to limit the relative displacement of the connecting member and the second shaft in a circumferential direction.

7. The power take-off assembly of any one of claims 1-5, wherein, Further comprising: A reset member is sleeved on the outer circumferential side of the first shaft and connected with the connecting member, and the reset member always has a force moving the connecting member away from the second shaft.

8. The power take-off assembly of any one of claims 1-5, wherein, Further comprising: An oil seal assembly is arranged in the accommodating cavity, and the oil seal assembly comprises an oil seal member and an oil seal cover. The oil seal member is sleeved on the outer circumferential side of the connecting member and is in contact with the outer circumferential surface of the connecting member. The oil seal cover is connected with the oil seal member so that the oil seal member is always in contact with the outer circumferential surface of the connecting member.

9. The power take-off assembly of any of claims 2-5, wherein, The shell comprises a shell body and a cover body. The cover body is arranged on the other side of the shell body in the axial direction of the first shaft. At least part of the ventilation passage and at least part of the ventilation passage are formed on the cover body.

10. A vehicle characterized by comprising: Further comprising: The power take-off assembly according to any one of claims 1-9; The electric drive axle has a second gear, and the first gear of the power take-off assembly is engaged with the second gear. The control assembly is electrically connected with the switch member of the power take-off assembly. The air path is in communication with the air inlet of the power take-off assembly.

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