Vehicle and drive axle thereof

Abstract

The utility model discloses a vehicle and a drive axle thereof, and relates to the technical field of vehicles, the drive axle is used for transmitting rotating speed and torque to wheels, and the drive axle comprises a swing arm unit, a clutch and a telescopic drive assembly. The swing arm unit is used for being hinged to the frame, the clutch is connected with the swing arm unit and the wheels and used for achieving transmission and disconnection of power between the wheels and the swing arm unit, one end of the telescopic driving assembly is hinged to the frame, and the other end of the telescopic driving assembly is hinged to the swing arm unit so as to drive the swing arm unit to rotate relative to the frame. The telescopic driving assembly of the drive axle can push the swing arm unit to rotate, so that height adjustment of the drive axle arm or the cantilever is achieved, and then the functions of obstacle crossing, trench crossing, wading and the like of a vehicle are achieved; meanwhile, the clutch can achieve transmission and disconnection of power between the wheels and the swing arm unit, and therefore the positive effect is achieved when the vehicle needs to be out of order or transferred.

Description

Technical Field

[0001] The present application relates to the field of vehicle technology, and in particular to a drive axle. The present application also relates to a vehicle having the drive axle. Background Art

[0002] In the existing system, the drive axle with clutch is mainly used in two-axle vehicles (or four-wheel drive vehicles). When the vehicle is switched from four-wheel drive to two-wheel drive, the clutch of the front drive axle is generally disconnected to achieve the purpose of cutting off the driving force of the front axle.

[0003] However, in the process of implementing the present invention, the inventors found that there are at least the following problems in the prior art:

[0004] First, in general special-purpose vehicles with three axles or more, the drive axle does not have a clutch, which means that direct traction will cause certain damage to the vehicle when the vehicle is being rescued or transported.

[0005] Secondly, the overall up and down jumping of the drive axle is not high enough, and the height of the drive axle arm cannot be actively adjusted, which affects the vehicle's obstacle crossing, trench crossing, and wading functions.

[0006] Therefore, it is necessary for those skilled in the art to provide a drive axle and a vehicle having the drive axle in a timely manner that can actively adjust the height of the drive axle arm and cut off the power. Utility Model Content

[0007] The purpose of the present application is to provide a drive axle which can actively adjust the height and cut off the power. Another purpose of the present application is to provide a vehicle including the drive axle.

[0008] To achieve the above object, the present application provides a drive axle, which is used to connect with wheels to transmit rotation speed and torque to the wheels. The drive axle includes:

[0009] A swing arm unit, used for being articulated with the vehicle frame;

[0010] A clutch is connected to the swing arm unit and the wheel, and is used to realize the transmission and disconnection of power between the wheel and the swing arm unit;

[0011] A telescopic driving assembly, one end of which is hinged to the vehicle frame, and the other end of which is hinged to the swing arm unit, so as to drive the swing arm unit to rotate relative to the vehicle frame.

[0012] In some embodiments, the clutch comprises:

[0013] An input shaft connected to the swing arm unit;

[0014] An output shaft connected to the wheels;

[0015] The clutch sleeve is slidably connected to the input shaft, and when the clutch sleeve slides onto the output shaft, the input shaft is engaged with the output shaft.

[0016] In some embodiments, the input shaft is provided with a first spline, the output shaft is provided with a second spline, and the clutch sleeve is provided with a third spline. The third spline slides with the first spline and the second spline, so that the clutch sleeve can be connected and disconnected with the output shaft when sliding on the input shaft.

[0017] In some embodiments, it also includes:

[0018] A rotatable shift fork, which can be rotated to a trigger position to trigger the clutch sleeve to slide relative to the input shaft and the output shaft, so that the clutch is in an engaged state;

[0019] The shift fork driving assembly is connected to the shift fork and is used to drive the shift fork to rotate.

[0020] In some embodiments, the swing arm unit includes a sprocket chain mechanism, and the sprocket chain mechanism is connected to the input shaft to drive the input shaft to rotate.

[0021] In some embodiments, a hydraulic motor is also included, and the hydraulic motor is connected to the sprocket chain mechanism to drive the sprocket chain mechanism to operate.

[0022] In some embodiments, the telescopic drive assembly is an oil-gas spring assembly, and the oil-gas spring assembly can be switched between a flexible state and a rigid state.

[0023] In some embodiments, the gas spring assembly includes:

[0024] Cylinder body, both ends of which are respectively hinged between the frame and the swing arm unit;

[0025] A piston rod is movably connected to the cylinder body, the piston rod comprises a piston portion and a rod portion, and the piston portion separates the inner cavity of the cylinder body into a first cavity and a second cavity;

[0026] A connecting pipe, the two ends of which are respectively connected to the first cavity and the second cavity;

[0027] The switch valve body is arranged on the connecting pipe and is used to realize the opening and closing of the connecting pipe. When the switch valve body is opened, the first chamber is connected with the second chamber through the connecting pipe, so that the oil-gas spring assembly is in a flexible state. When the switch valve body is closed, the first chamber is disconnected from the second chamber, so that the oil-gas spring assembly is in a rigid state.

[0028] In some embodiments, a hydraulic pump is also included, which is connected to the first chamber through a pipeline. The hydraulic pump is used to inject hydraulic oil into the first chamber when the switch valve body is closed to extend the piston rod, or to extract hydraulic oil from the first chamber to retract the piston rod.

[0029] The present application also provides a vehicle, comprising any one of the drive axles described above.

[0030] Compared with the above background technology, the drive axle provided in the embodiment of the present application is used to connect with the wheel to transmit the rotation speed and torque to the wheel, and the drive axle includes a swing arm unit, a clutch and a telescopic drive assembly. Among them, the swing arm unit is used to be hinged with the frame, the clutch is connected with the swing arm unit and the wheel, the clutch is used to realize the transmission and disconnection of power between the wheel and the swing arm unit, one end of the telescopic drive assembly is hinged with the frame, and the other end is hinged with the swing arm unit to drive the swing arm unit to rotate relative to the frame. It can be seen that compared with the traditional drive axle, the drive axle provided in the embodiment of the present application, on the one hand, the telescopic drive assembly can drive the swing arm unit to rotate, thereby realizing the height adjustment of the drive bridge arm or cantilever, and then realizing the functions of the vehicle such as crossing obstacles, crossing trenches, and wading; on the other hand, the clutch can realize the transmission and disconnection of power between the wheel and the swing arm unit, increase the power output when power is needed, and disconnect the power when power needs to be cut off, so that the clutch can disconnect the power transmission between the wheel and the swing arm unit, thereby playing a positive role when the vehicle needs to escape or transport. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on the provided drawings without paying any creative work.

[0032] Figure 1 This is a schematic diagram of the overall structure of the drive axle in the embodiment of the present application;

[0033] Figure 2 for Figure 1 The working schematic diagram of the drive axle shown;

[0034] Figure 3 for Figure 1 An exploded view of the clutch in the drive axle shown;

[0035] Figure 4 for Figure 1 Simplified view of the telescopic drive assembly in the transaxle shown.

[0036] in:

[0037] 1-Hydraulic motor, 2-swing arm unit, 3-telescopic drive assembly, 4-clutch, 5-wheel;

[0038] 31-cylinder body, 311-first chamber, 312-second chamber, 32-piston rod, 33-connecting pipe, 34-switch valve body;

[0039] 41-input shaft, 42-clutch sleeve, 43-output shaft. DETAILED DESCRIPTION

[0040] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0041] In order to enable those skilled in the art to better understand the present application, the present application is further described in detail below in conjunction with the accompanying drawings and specific implementation methods.

[0042] It should be noted that the directional words such as "upper end, lower end, left side, right side" described below are all defined based on the drawings in the specification.

[0043] Please refer to Figures 1 to 4 , Figure 1 This is a schematic diagram of the overall structure of the drive axle in the embodiment of the present application; Figure 2 for Figure 1 The working schematic diagram of the drive axle shown; Figure 3 for Figure 1 An exploded view of the clutch in the drive axle shown; Figure 4 for Figure 1 Simplified view of the telescopic drive assembly in the transaxle shown.

[0044] The drive axle provided in the embodiment of the present application is used to connect with the wheel 5 to transmit the rotation speed and torque to the wheel 5. The drive axle includes a swing arm unit 2, a clutch 4 and a telescopic drive assembly 3.

[0045] Among them, the swing arm unit 2 is used to be hinged with the frame, the clutch 4 is connected to the swing arm unit 2 and the wheel 5, the clutch 4 is used to realize the transmission and disconnection of power between the wheel 5 and the swing arm unit 2, one end of the telescopic drive component 3 is hinged with the frame, and the other end is hinged with the swing arm unit 2 to drive the swing arm unit 2 to rotate relative to the frame.

[0046] It can be seen that compared with the traditional drive axle, the drive axle provided in the embodiment of the present application, on the one hand, the telescopic drive assembly 3 can push the swing arm unit 2 to rotate, thereby realizing the height adjustment of the drive bridge arm or cantilever, and then realizing the vehicle's obstacle crossing, trench crossing, wading and other functions; on the other hand, the clutch 4 can realize the transmission and disconnection of power between the wheel 5 and the swing arm unit 2. When power is needed, the power output is increased. When the power needs to be cut off, the clutch 4 can disconnect the power transmission between the wheel 5 and the swing arm unit 2, thereby playing a positive role when the vehicle needs to escape or be transported.

[0047] In some embodiments, the clutch 4 includes an input shaft 41 , an output shaft 43 and a clutch sleeve 42 .

[0048] The input shaft 41 is connected to the swing arm unit 2 , the output shaft 43 is connected to the wheel 5 , the clutch sleeve 42 is slidably connected to the input shaft 41 , and when the clutch sleeve 42 slides onto the output shaft 43 , the input shaft 41 is engaged with the output shaft 43 .

[0049] Specifically, the clutch function of the above-mentioned clutch 4 is mainly realized by the input shaft 41, the clutch sleeve 42 and the output shaft 43. The input shaft 41 is connected to the sprocket chain mechanism of the swing arm unit 2 to input the power transmitted from the sprocket chain mechanism into the clutch 4. The clutch sleeve 42 can slide on the input shaft 41. When the clutch sleeve 42 slides onto the output shaft 43, for example, half of the clutch sleeve 42 is engaged with the input shaft 41, and the other half is engaged with the output shaft 43. At this time, the clutch 4 is in an engaged state, and the power is transmitted from the input shaft 41 to the output shaft 43.

[0050] In this way, when power is needed, the clutch 4 is in an engaged state to increase the power output; when transportation or escape is needed, the clutch 4 is in a disengaged state, and the wheel 5 is disconnected from the power source, which is convenient for escape or transportation.

[0051] In order to facilitate the sliding connection of the clutch sleeve 42, the clutch sleeve 42 slides on the input shaft 41 through the spline. Specifically, the input shaft 41 is provided with a first spline, the output shaft 43 is provided with a second spline, and the clutch sleeve 42 is provided with a third spline, and the third spline is slidably matched with the first spline and the second spline, so that the clutch sleeve 42 can be connected and disconnected with the output shaft 43 when sliding on the input shaft 41.

[0052] That is to say, when the clutch sleeve 42 slides onto the output shaft 43, for example, half of the clutch sleeve 42 is engaged with the input shaft 41 and the other half is engaged with the output shaft 43, at this time, the clutch 4 is in an engaged state, and the power is transmitted from the input shaft 41 to the output shaft 43; when the clutch sleeve 42 slides to disengage from the output shaft 43, at this time, the clutch 4 is in a disengaged state, that is, the power cannot be transmitted from the input shaft 41 to the output shaft 43.

[0053] In order to facilitate the driving of the clutch sleeve 42 to slide, the drive axle further includes a shift fork and a shift fork driving assembly.

[0054] The shift fork is a rotatable shift fork, which can be rotated to the trigger position to trigger the clutch sleeve 42 to slide relative to the input shaft 41 and the output shaft 43, so that the clutch 4 is in an engaged state; the shift fork drive assembly is connected to the shift fork, and the shift fork drive assembly is used to drive the shift fork to rotate. Of course, the shift fork drive assembly can be a manual operating rod assembly.

[0055] In some embodiments, the swing arm unit 2 includes a sprocket chain mechanism, which is connected to the input shaft 41 to drive the input shaft 41 to rotate.

[0056] In addition, the drive axle further comprises a hydraulic motor 1, which is connected to the sprocket chain mechanism to drive the sprocket chain mechanism to operate.

[0057] In this way, the hydraulic motor 1 outputs power to the clutch 4 through the sprocket chain mechanism in the swing arm unit 2. The clutch 4 and the wheel 5 are rigidly connected. The telescopic drive assembly 3 pushes the swing arm unit 2 to rotate, thereby achieving the adjustment of the suspension height; the clutch 4 can disconnect the power transmission between the wheel 5 and the swing arm unit 2.

[0058] In some embodiments, the telescopic drive assembly 3 is an oil-gas spring assembly, and the oil-gas spring assembly can be switched between a flexible state and a rigid state.

[0059] The oil-gas spring assembly includes a cylinder 31 , a piston rod 32 , a connecting pipe 33 and a switch valve body 34 .

[0060] The two ends of the cylinder 31 are respectively hinged between the frame and the swing arm unit 2. Specifically, Figure 2 As shown, the swing arm unit 2 is hinged to the frame, and the axis of the hinge is the A axis. The top end of the cylinder body 31 is hinged to the frame, and the axis of the hinge is the B axis. The bottom end of the cylinder body 31 is hinged to the swing arm unit 2, and the axis of the hinge is the C axis. In this way, the piston rod 32 of the oil-gas spring assembly is extended or shortened, which will push the swing arm unit 2 to rotate around the A axis to achieve the adjustment of the cantilever height.

[0061] Furthermore, the piston rod 32 is movably connected to the cylinder body 31, and the piston rod 32 includes a piston portion and a rod portion. The piston portion divides the inner cavity of the cylinder body 31 into a first cavity 311 and a second cavity 312. The two ends of the connecting pipe 33 are respectively connected to the first cavity 311 and the second cavity 312. The switch valve body 34 is arranged on the connecting pipe 33, and the switch valve body 34 is used to realize the opening and closing of the connecting pipe 33.

[0062] It can be seen that when the switch valve body 34 is opened, the first chamber 311 is connected to the second chamber 312 through the connecting pipe 33, so that the oil-gas spring assembly is in a flexible state; when the switch valve body 34 is closed, the first chamber 311 is disconnected from the second chamber 312, so that the oil-gas spring assembly is in a rigid state. At this time, the oil-gas spring assembly is equivalent to a hydraulic cylinder. When hydraulic oil is injected into or extracted from the first chamber 311, the piston rod 32 can move up and down to adjust the cantilever height.

[0063] In this way, during normal walking, the switch valve body 34 is opened, and the oil-gas spring assembly is in a flexible state. In the flexible state, the oil-gas spring assembly can serve as a shock absorber; when encountering an obstacle, the switch valve body 34 is closed, and the gas spring assembly is in a rigid state. In the rigid state, the oil-gas spring assembly can actively adjust the suspension height, thereby facilitating the realization of functions such as obstacle crossing, trench crossing, and wading.

[0064] In addition, the drive axle also includes a hydraulic pump, which is connected to the first chamber 311 through a pipeline. The hydraulic pump is used to inject hydraulic oil into the first chamber 311 when the switch valve body 34 is closed to extend the piston rod 32, or to extract hydraulic oil from the first chamber 311 to retract the piston rod 32.

[0065] Compared with the traditional drive axle, the above drive axle can achieve single-axle follow-up traction. Therefore, when driving at high speed, the drive wheel can be used as a follow-up wheel to reduce energy consumption, which can also play a positive role when the vehicle needs to escape or be transported. In addition, the drive axle also has the function of greatly adjustable suspension height, which can also play a positive role in the vertical obstacle crossing of the vehicle.

[0066] A vehicle provided in the present application includes the drive axle described in the above specific embodiment; other parts of the vehicle can refer to the prior art and will not be elaborated in this article.

[0067] It should be noted that, in this specification, relational terms such as first and second are merely used to distinguish one entity from other entities, but do not necessarily require or imply any actual relationship or order between these entities.

[0068] The vehicle and its drive axle provided by the present application are introduced in detail above. Specific examples are used in this article to illustrate the principles and implementation methods of the present application. The description of the above embodiments is only used to help understand the scheme and its core idea of ​​the present application. It should be pointed out that for ordinary technicians in this technical field, without departing from the principles of the present application, several improvements and modifications can be made to the present application, and these improvements and modifications also fall within the scope of protection of the claims of the present application.

Claims

1. A drive axle, used to connect with wheels to transmit rotation speed and torque to the wheels, characterized in that: The drive axle comprises: A swing arm unit, used for being articulated with the vehicle frame; A clutch, connected to the swing arm unit and the wheel, for realizing the transmission and disconnection of power between the wheel and the swing arm unit; A telescopic driving assembly, one end of which is hinged to the frame, and the other end of which is hinged to the swing arm unit, so as to drive the swing arm unit to rotate relative to the frame.

2. The drive axle according to claim 1, characterized in that: The clutch comprises: An input shaft connected to the swing arm unit; An output shaft connected to the wheel; A clutch sleeve is slidably connected to the input shaft, and when the clutch sleeve slides onto the output shaft, the input shaft is engaged with the output shaft.

3. The drive axle according to claim 2, characterized in that: The input shaft is provided with a first spline, the output shaft is provided with a second spline, and the clutch sleeve is provided with a third spline. The third spline is slidably matched with the first spline and the second spline, so that the clutch sleeve can be connected and disconnected with the output shaft when sliding on the input shaft.

4. The drive axle according to claim 2, characterized in that: Also includes: A rotatable shift fork, wherein the shift fork can be rotated to a trigger position to trigger the clutch sleeve to slide relative to the input shaft and the output shaft, so that the clutch is in an engaged state; The shift fork driving assembly is connected to the shift fork and is used to drive the shift fork to rotate.

5. The drive axle according to claim 2, characterized in that: The swing arm unit includes a sprocket chain mechanism, and the sprocket chain mechanism is connected to the input shaft to drive the input shaft to rotate.

6. The drive axle according to claim 5, characterized in that: It also includes a hydraulic motor, which is connected to the sprocket chain mechanism to drive the sprocket chain mechanism to operate.

7. The drive axle according to any one of claims 1 to 6, characterized in that: The telescopic drive assembly is an oil-gas spring assembly, and the oil-gas spring assembly can be switched between a flexible state and a rigid state.

8. The drive axle according to claim 7, characterized in that: The oil-gas spring assembly comprises: A cylinder body, two ends of which are respectively hinged between the frame and the swing arm unit; A piston rod is movably connected to the cylinder body, the piston rod comprises a piston portion and a rod portion, the piston portion separates the inner cavity of the cylinder body into a first cavity and a second cavity; A connecting tube, two ends of which are respectively connected to the first cavity and the second cavity; The switch valve body is arranged on the connecting pipe and is used to realize the opening and closing of the connecting pipe. When the switch valve body is opened, the first chamber is connected with the second chamber through the connecting pipe, so that the oil-gas spring assembly is in a flexible state. When the switch valve body is closed, the first chamber is disconnected from the second chamber, so that the oil-gas spring assembly is in a rigid state.

9. The drive axle according to claim 8, characterized in that: It also includes a hydraulic pump, which is connected to the first chamber through a pipeline. The hydraulic pump is used to inject hydraulic oil into the first chamber when the switch valve body is closed to extend the piston rod, or to extract hydraulic oil from the first chamber to retract the piston rod.

10. A vehicle, characterized in that: Comprising a drive axle as described in any one of claims 1-9.

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