CN115339271A - Transaxle and amphibious vehicle - Google Patents

Abstract

The invention provides a drive axle and an amphibious vehicle, wherein the drive axle comprises: a main reducer assembly; one end of the driving half shaft is connected with the main speed reducer assembly; a rotary device, comprising: the fixing seat is sleeved on the driving half shaft, and the driving half shaft can rotate relative to the fixing seat; the rotating seat is rotatably arranged on the fixed seat; hub reduction gear includes: the hub reduction gear shell is connected with the rotating seat and is provided with a connecting hole connected with the suspension, and the connecting hole is connected with the suspension through a telescopic piece; the hub reduction assembly is arranged in the hub reduction gear shell and is connected with the other end of the driving half shaft; the wheel axle is connected with the wheel side speed reducing assembly, the telescopic part is provided with a first station and a second station, when the telescopic part switches the stations, the wheel side speed reducer can rotate relative to the vehicle body, the wheel axle can move relative to the vehicle body, the wheel axle is located at the first position under the first station, the wheel axle is located at the second position under the second station, and the height of the second position is larger than that of the first position.

Description

Drive axles and amphibious vehicles

technical field

The invention relates to the technical field of amphibious vehicles, in particular to a drive axle and an amphibious vehicle.

Background technique

In related technologies, when the amphibious vehicle is converted from running on land to running on water, the wheels will be in contact with the water surface, and the resistance is relatively large.

Contents of the invention

In order to solve or improve at least one of the above technical problems, an object of the present invention is to provide a driving axle.

Another object of the present invention is to provide an amphibious vehicle having the above drive axle.

In order to achieve the above object, the first aspect of the present invention provides a drive axle, including: a final reducer assembly, used to connect with the vehicle body; a drive half shaft, one end of which is connected to the final reducer assembly; The device includes: a fixed seat for connecting with the car body, the fixed seat is sleeved on the driving half shaft, and the driving half shaft can rotate relative to the fixed seat; the rotating seat is rotatably arranged on the fixed seat; the wheel reducer includes: The shell of the wheel reducer is connected with the rotating seat. There is a connecting hole on the shell of the wheel reducer. The connecting hole is used to connect with the suspension. The connecting hole is connected to the suspension through a telescopic piece. The telescopic piece can change the overall length and It has a first station and a second station. When the telescopic member is converted from the first station to the second station or from the second station to the first station, the wheel side reducer can swing relative to the car body; the wheel side The deceleration assembly is located in the wheel side reducer housing, and the wheel side deceleration assembly is connected with the other end of the driving half shaft; the wheel shaft is connected with the wheel side deceleration assembly. When the wheel side decelerator rotates relative to the car body, the wheel shaft can The body moves, the telescopic part is under the first station, the wheel shaft is at the first position, the telescopic part is under the second station, the wheel shaft is at the second position, and the height of the second position is greater than the height of the first position.

According to the embodiment of the driving axle provided by the present invention, when the amphibious vehicle needs to run on land, the telescopic member is in the first position, and the wheel shaft is in the first position, and the wheels can support the vehicle body and run stably; when the amphibious vehicle When traveling on water, the telescopic member is in the second position, the wheel shaft is in the second position, and the wheels are retracted and leave the water surface, which is beneficial to reduce resistance. The amphibious vehicle can not only run stably on land, but also when running on water, the wheels can be flipped along with the wheel reducer to make it leave the water to reduce resistance, which is beneficial to improve the movement performance of the amphibious vehicle. In addition, the overall structure layout of the driving axle of the present invention is novel, ingenious and highly integrated.

Specifically, the drive axle includes a final drive assembly, a drive half shaft, a rotating device, a wheel-side reducer, and a wheel axle. Among them, the main reducer assembly is used to connect with the vehicle body. Optionally, the vehicle body is a load-bearing vehicle body. The main reducer assembly is directly installed on the car body, which is beneficial to improve the structural strength and bearing capacity of the car body. Optionally, the vehicle body is provided with a mounting groove, and the final reducer assembly is arranged in the mounting groove. Optionally, the final drive assembly includes a final drive, a differential and an input flange. Specifically, the final reducer has a driving bevel gear and a driven bevel gear meshing with each other. The driving bevel gear is connected with the input flange. The input lug is used to connect with the power transmission shaft. The differential is assembled and connected with the driven bevel gear of the final drive. The final drive is used to match speed and transmit torque. The function of the differential is to allow the left and right wheels to roll at different speeds when the vehicle is turning or driving on an uneven road surface. The differential is used to adjust the speed difference between the left and right wheels. Further, one end of the driving half shaft is connected with the final reducer assembly. Optionally, the driving half shaft is connected with the half shaft gear of the final drive assembly. The power transmission shaft sequentially transmits power to the driving half shaft through the input flange, the driving bevel gear of the final drive, the driven bevel gear of the final drive, and the differential half shaft gear.

Further, the rotating device includes a fixed seat and a rotating seat. Specifically, the fixing seat is used for connecting with the vehicle body and the final reducer assembly. Optionally, the fixed seat is connected to the flange of the vehicle body. On the one hand, it is convenient for installation and disassembly; connection strength. Further, the rotating base is rotatably arranged on the fixing base, that is, the rotating base can rotate relative to the fixing base. The fixing seat is sheathed on the driving half shaft, and the driving half shaft can rotate relative to the fixing seat.

Further, the wheel reducer includes a wheel reducer housing and a wheel reducer assembly. Specifically, the wheel reducer housing is connected to the rotating seat. The wheel reducer housing can rotate relative to the fixed seat along with the rotating seat. In other words, the wheel speed reducer can rotate relative to the vehicle body. The wheel-side reduction assembly is arranged in the wheel-side reducer housing. The wheel side reduction assembly is connected with the other end of the driving half shaft. The wheel side reduction assembly is connected with the end of the driving half shaft away from the main reducer assembly. Optionally, the wheel-side reduction assembly is a gear set or a worm gear assembly, and the wheel-side reduction assembly is used for matching the rotational speed and transmitting torque. Further, the wheel shaft is connected with the wheel side reduction assembly. When the wheel reducer rotates relative to the vehicle body, the wheel axle can move relative to the vehicle body. Optionally, a wheel axle is used to connect to the wheel. In the process of transmission of power to the wheel shaft by the power transmission shaft, two decelerations are realized through the main reducer assembly and the wheel side reducer. Compared with the method of only passing through one reducer, the speed regulation range is larger and the output torque is also smaller. bigger.

Further, the wheel reducer housing is provided with connection holes. The connection holes are used to connect with the suspension. The connecting hole is connected with the suspension through the telescopic piece. The telescopic piece can change the overall length and has a first station and a second station. In other words, the telescopic element can be stretched to change its overall length, and the telescopic element has a first station and a second station. Optionally, the telescopic member is a telescopic oil cylinder. Further, when the telescopic member is converted from the first station to the second station or from the second station to the first station, the wheel reducer can rotate relative to the vehicle body. The telescopic part adjusts the swing angle of the wheel reducer by changing its own length. When the wheel reducer swings relative to the vehicle body, the wheel axle can move relative to the vehicle body. When the telescopic part is in the first position, the wheel reducer swings to the first angle, and the wheel axle is in the first position; when the telescopic part is in the second position, the wheel reducer swings to the second angle, and the wheel axle is in the second position. Location. The height of the second location is greater than the height of the first location. When the amphibious vehicle needs to run on land, the telescopic part is in the first position, and the wheel axle is in the first position, at this time, the wheels can support the vehicle body and run stably; when the amphibious vehicle needs to run on water, the telescopic part is in the second position. In the working position, the wheel shaft is in the second position, and the wheels are retracted and leave the water surface, which is beneficial to reduce resistance.

In the technical solution defined by the present invention, the amphibious vehicle can not only run stably on land, but also when running on water, the wheels can be flipped along with the wheel-side reducer to make it leave the water surface to reduce resistance, which is beneficial to improve the performance of the amphibious vehicle. athletic performance. In addition, the overall structure layout of the driving axle of the present invention is novel, ingenious and highly integrated.

In addition, the above-mentioned technical solution provided by the present invention may also have the following additional technical features:

In the above technical solution, the rotating seat is provided with a first installation cavity, and the fixed seat is penetrated in the first installation cavity, and the rotating device further includes: at least one bearing is arranged in the first installation cavity, and the bearing is sleeved in the fixed seat, The outer wall of the bearing is in contact with the wall of the first installation cavity, and the inner wall of the bearing is in contact with the circumferential side wall of the fixed seat; the oil seal is arranged in the first installation cavity, and the oil seal is arranged in the first installation cavity, and the oil seal is arranged in the bearing away from One side of the wheel reducer.

In this technical solution, the rotating device also includes a bearing and an oil seal. Specifically, the rotating base is provided with a first installation cavity, and the fixed base is penetrated in the first installation cavity. The bearing is arranged in the first installation cavity. The bearing is sleeved on the fixed seat. The outer wall of the bearing is against the cavity wall of the first installation cavity, and the inner wall of the bearing is against the circumferential side wall of the fixing seat. Optionally, the bearing includes an inner ring layer, a ball layer and an outer ring layer. The inner ring layer is sleeved on the fixed seat, the outer ring layer is sleeved on the inner ring layer, and the ball layer is arranged between the inner ring layer and the outer ring layer. The outer wall of the bearing is the outer wall of the outer ring layer, and the inner wall of the bearing is the inner wall of the inner ring layer. By setting the bearing, the rotational connection between the rotating seat and the fixed seat can be realized. Further, the oil seal is arranged in the first installation cavity. The oil seal passes through the first installation cavity of the rotating seat. The oil seal is against the cavity wall of the first installation cavity, and the oil seal is against the circumferential side wall of the fixing seat. The oil seal is located on the side of the bearing away from the wheel reducer. By setting the oil seal, on the one hand, it can play a sealing role to prevent dust and other impurities from entering and aggravating wear; on the other hand, it can effectively prevent the lubricant from flowing out from the side of the bearing away from the wheel-side reducer, and the lubricant can be released from the first installation cavity. It flows to the wheel-side reducer, or flows from the roadside reducer to the first installation chamber, which is beneficial to improve the lubrication effect. It is worth noting that the number of bearings is at least one, that is, there can be one, two or more bearings. Considering the smoothness of rotation of the rotating seat relative to the fixed seat, the size of the occupied space, the cost and other factors, the bearings are adjusted according to actual needs. Make flexible settings.

In the above technical solution, the cavity wall of the first installation cavity is provided with a first protrusion, the first protrusion has a first limiting surface, and the circumferential side wall of the fixing seat is provided with a second protrusion, and the second protrusion has a The second limiting surface, the bearing is located between the first limiting surface and the second limiting surface; and/or the cavity wall of the first installation cavity is provided with a first protrusion, the first protrusion has a first limiting surface, The rotating device further includes: an axial limiter disposed in the first installation cavity, the axial limiter is sleeved on the fixed seat, and the bearing is located between the axial limiter and the first limiter surface.

In this technical solution, by setting the bearing between the first limiting surface and the second limiting surface, the first limiting surface is set on one side of the bearing, and the second limiting surface is set on the other side of the bearing, The two limiting surfaces can axially limit the bearing to limit the range of axial movement of the bearing. Alternatively, the bearing is located between the axial limiting member and the first limiting surface, the axial limiting member is arranged on one side of the bearing, the first limiting surface is arranged on the other side of the bearing, and the axial limiting member and the first limiting surface The mutual cooperation of a limit surface can limit the bearing axially, so as to limit the range of axial movement of the bearing. Optionally, the axial limiter is a lock nut and/or a stop washer.

In the above technical solution, the fixed seat includes a connected first section and a second section, the distance between the first section and the main reducer assembly is smaller than the distance between the second section and the main reducer assembly, and the radial dimension of the first section Greater than the radial dimension of the second section, the number of bearings is two, the two bearings are the first bearing and the second bearing, the inner diameter of the first bearing is larger than the inner diameter of the second bearing, and the first bearing is sleeved on the first section , the second bearing is sleeved on the second section.

In this technical solution, the fixing seat includes a first segment and a second segment. Specifically, the first segment and the second segment are connected to each other. Optionally, the first section and the second section have an integrated structure, which has better mechanical properties and higher connection strength compared to the post-processing method, which is conducive to reducing the number of parts and improving assembly efficiency. Further, the distance between the first section and the final reducer assembly is smaller than the distance between the second section and the final reducer assembly. It can be understood that, among the first section and the second section of the fixing seat, the first section is closer to the final reducer assembly. The radial dimension of the first segment is greater than the radial dimension of the second segment. Since the end of the fixing seat close to the main reducer assembly needs to be connected with the vehicle body, increasing the radial dimension of the first section of the fixing seat closer to the main reducer assembly will help improve the structural strength and reduce the Potential for cracking of the mount due to stress concentration. Further, the number of bearings is two, and the two bearings are respectively a first bearing and a second bearing. The inner diameter of the first bearing is larger than the inner diameter of the second bearing. The first bearing is sleeved on the first section, and the second bearing is sleeved on the second section. By arranging two bearings, compared with the method of only arranging one bearing, the rotating seat can be made to rotate more smoothly relative to the fixed seat; compared with the method of arranging multiple (more than two) bearings, it is beneficial to control costs. Due to the variable diameter design of the fixed seat, matching the corresponding bearing with the shaft section can make the structure more reasonable and the integration degree higher.

In the above technical solution, a flange plate is formed at the end of the fixing seat away from the wheel reducer, and the flange plate is used for connecting with the vehicle body.

In this technical solution, the fixed seat is connected to the flange of the vehicle body. On the one hand, it is convenient for installation and disassembly; The connection strength below.

In the above technical solution, the wheel reducer casing includes: a first casing connected to the rotating seat; a second casing connected to the first casing, and the first casing and the second casing enclose a second In the installation chamber, the wheel speed reduction assembly is located in the second installation chamber.

In this technical solution, the wheel reducer housing includes a first housing and a second housing. Specifically, the first housing is connected with the rotating seat. The second casing is connected with the first casing. The first casing and the second casing can rotate relative to the fixed seat along with the rotating seat. In other words, the wheel reducer housing can be rotated relative to the vehicle body through the rotating device. Further, the first housing and the second housing surround a second installation cavity, and the wheel speed reduction assembly is arranged in the second installation cavity. Wheel reduction assemblies are used to match speed and transmit torque. The wheel shaft is connected to the wheel side reduction assembly. When the wheel reducer rotates relative to the vehicle body, the wheel axle can move relative to the vehicle body.

In the above technical solution, the first shell is detachably connected to the second shell through a connecting piece, the first shell is provided with a first groove on the side facing the second shell, and the second shell faces the side of the first shell. One side is provided with a second groove, the first groove and the second groove form a positioning groove, and the wheel reducer also includes: a positioning piece, which is set in the positioning groove.

In this technical solution, the detachable connection between the first housing and the second housing can be realized by setting the connecting piece, which facilitates the disassembly and assembly of the wheel reducer housing and the wheel reducer assembly in the second installation cavity. Perform maintenance or replacement. Optionally, the connectors are bolts, screws or other structures for connection. Further, the wheel speed reducer also includes a positioning member. Specifically, a side of the first housing facing the second housing is provided with a first slot, and a side of the second housing facing the first housing is provided with a second slot, and the first slot and the second slot form a positioning slot. The positioning piece is arranged in the positioning groove. Assembling and positioning can be realized through cooperation between the positioning piece and the positioning groove. Optionally, the positioning groove is a positioning pin hole, and the positioning piece is a positioning pin.

In the above technical solution, the wheel side reduction assembly includes: the first gear, which is arranged in the casing, and is connected with the end of the driving half shaft away from the main reducer assembly; the second gear, which is arranged in the casing, and the second gear is connected with the first gear The gears mesh; the third gear is arranged in the casing, and the third gear meshes with the second gear; the fourth gear is arranged in the casing, and the fourth gear meshes with the third gear, and the fourth gear is connected with the wheel shaft.

In this technical solution, the wheel reduction assembly includes a first gear, a second gear, a third gear and a fourth gear. Specifically, the first gear is arranged in the housing. The first gear is connected with the end of the driving half shaft away from the main reducer assembly. Optionally, the first gear is connected to the driving half shaft through a spline structure. Further, the second gear is arranged in the housing. The third gear is arranged in the casing. The fourth gear is arranged in the casing. The second gear meshes with the first gear, the third gear meshes with the second gear, and the fourth gear meshes with the third gear. The fourth gear is connected with the wheel shaft. The driving half shaft transmits power to the wheel shaft through the first gear, the second gear, the third gear and the fourth gear in sequence. The three-stage speed change through the wheel side reducer in the process of the driving half shaft transmitting the power to the wheel shaft is beneficial to increase the speed regulation range and output torque.

In the above technical solution, the number of connection holes is at least two, at least one connection hole is provided in the first housing, and at least one connection hole is provided in the second housing.

In this technical solution, by providing at least one connection hole on the first housing and at least one connection hole on the second housing, the telescopic member can be connected to the first housing and the second housing at the same time, ensuring that the first The housing and the second housing rotate relative to the fixed seat at the same time, reducing the possibility of damage or even fracture of the connecting part due to excessive torque.

The second aspect of the present invention provides an amphibious vehicle, comprising: a vehicle body; a suspension connected to the vehicle body; The drive axle is connected with the car body, the rotating device of the drive axle is connected with the car body, and the connecting hole of the drive axle is connected with the telescopic piece.

According to an embodiment of the amphibious vehicle of the present invention, the amphibious vehicle includes a vehicle body, a suspension, a telescoping member, and the drive axle in any of the above-mentioned embodiments. Specifically, the suspension is connected to the vehicle body. The main reducer assembly of the drive axle is connected with the vehicle body. Optionally, the vehicle body is a load-bearing vehicle body. The main reducer assembly is directly installed on the car body, which is beneficial to improve the structural strength and bearing capacity of the car body. Optionally, the vehicle body is provided with a mounting groove, and the final reducer assembly is arranged in the mounting groove. Further, the rotating device of the driving axle is connected with the vehicle body. The fixed seat of the rotating device is connected with the vehicle body through the flange plate. Further, the telescopic element is connected with the suspension. The connecting hole of the driving axle is connected with the telescopic piece. The telescopic member can be stretched to change its overall length, and the telescopic member has a first station and a second station. Optionally, the telescopic member is a telescopic oil cylinder. Further, when the telescopic member is converted from the first station to the second station or from the second station to the first station, the wheel reducer can rotate relative to the vehicle body. The telescopic part adjusts the turning angle of the wheel reducer by changing its own length. When the wheel reducer rotates relative to the vehicle body, the wheel axle can move relative to the vehicle body. When the telescopic part is in the first position, the wheel reducer is rotated to the first angle, and the wheel axle is in the first position; when the telescopic part is in the second position, the wheel reducer is rotated to the second angle, and the wheel axle is in the second position. Location. The height of the second location is greater than the height of the first location. When the amphibious vehicle needs to run on land, the telescopic part is in the first position, and the wheel axle is in the first position, at this time, the wheels can support the vehicle body and run stably; when the amphibious vehicle needs to run on water, the telescopic part is in the second position. In the working position, the wheel shaft is in the second position, and the wheels are retracted and leave the water surface, which is beneficial to reduce resistance.

Wherein, since the amphibious vehicle includes any drive axle in the above first aspect, it has the beneficial effects of any of the above embodiments, and will not be repeated here.

Additional aspects and advantages of embodiments of the invention will become apparent in the description which follows, or may be learned by practice of the invention.

Description of drawings

Fig. 1 shows a first schematic diagram of a drive axle according to an embodiment of the present invention;

Fig. 2 shows a partially enlarged schematic diagram of part A in Fig. 1;

Fig. 3 shows a second schematic diagram of a drive axle according to an embodiment of the present invention;

Fig. 4 shows a schematic diagram of the connection structure between the final reducer assembly and the shaft tube according to an embodiment of the present invention;

Figure 5 shows a schematic diagram of an amphibious vehicle according to one embodiment of the invention.

Wherein, the corresponding relationship between reference numerals and component names in Fig. 1 to Fig. 5 is:

100: drive axle; 110: main reducer assembly; 120: driving half shaft; 130: rotating device; 131: fixed seat; 1311: first section; 1312: second section; 1313: flange plate; 1314: second section Two protrusions; 1315: second limiting surface; 132: rotating seat; 1321: first installation cavity; 1322: first protrusion; 1323: first limiting surface; 133: first bearing; 134: second bearing ;135: oil seal; 136: axial limiter; 140: wheel reducer; 141: wheel reducer housing; 1411: first housing; 1412: second housing; 1413: second installation cavity; 142: Connector; 143: Positioning slot; 1431: First slot; 1432: Second slot; 144: Positioning piece; 145: Wheel reduction assembly; 1451: First gear; 1452: Second gear; Gear; 1454: fourth gear; 146: connection hole; 150: wheel axle; 160: axle tube; 200: amphibious vehicle; 210: car body; 220: suspension; 230: telescopic part.

Detailed ways

In order to more clearly understand the above objects, features and advantages of the embodiments of the present invention, the embodiments of the present invention will be further described in detail below in conjunction with the accompanying drawings and specific implementation methods. It should be noted that, in the case of no conflict, the embodiments of the present application and the features in the embodiments can be combined with each other.

In the following description, many specific details are set forth in order to fully understand the present application, but the embodiments of the present invention can also be implemented in other ways different from those described here, therefore, the protection scope of the present application is not limited to the following limitations of the specific embodiments disclosed.

The drive axle 100 and the amphibious vehicle 200 provided according to some embodiments of the present invention are described below with reference to FIGS. 1 to 5 .

Embodiment one

As shown in FIG. 1 , a drive axle 100 provided by an embodiment of the present invention includes a final drive assembly 110 , a driving half shaft 120 , a rotating device 130 , a wheel-side reducer 140 and a wheel axle 150 . Wherein, the final reducer assembly 110 is used to connect with the vehicle body 210 . Optionally, the vehicle body 210 is a load-bearing vehicle body. The final reducer assembly 110 is directly installed on the vehicle body 210 , which is beneficial to improve the structural strength and bearing capacity of the vehicle body 210 . Optionally, the vehicle body 210 is provided with a mounting groove, and the final reducer assembly 110 is disposed in the mounting groove. Optionally, the final drive assembly 110 includes a final drive, a differential, and an input flange. Specifically, the final reducer has a driving bevel gear and a driven bevel gear meshing with each other. The driving bevel gear is connected with the input flange. The input lug is used to connect with the power transmission shaft. The differential is assembled and connected with the driven bevel gear of the final drive. The final drive is used to match speed and transmit torque. The function of the differential is to allow the left and right wheels to roll at different speeds when the vehicle is turning or driving on an uneven road surface. The differential is used to adjust the speed difference between the left and right wheels. Further, one end of the driving half shaft 120 is connected with the final reducer assembly 110 . Optionally, the driving half shaft 120 is connected with the side gear of the final drive assembly 110 . The power transmission shaft transmits power to the driving half shaft 120 sequentially through the input flange, the driving bevel gear of the final drive, the driven bevel gear of the final drive, and the half shaft gear of the differential.

Further, as shown in FIG. 2 and FIG. 3 , the rotating device 130 includes a fixed seat 131 and a rotating seat 132 . Specifically, the fixing seat 131 is used to connect with the vehicle body 210 and the final reducer assembly 110 . Optionally, the fixed seat 131 is flange-connected with the vehicle body 210. On the one hand, it is convenient for installation and disassembly; 210 Connection strength in connected state. Further, the rotating base 132 is rotatably disposed on the fixing base 131 , that is, the rotating base 132 can rotate relative to the fixing base 131 . The fixing base 131 is sleeved on the driving half shaft 120 , and the driving half shaft 120 can rotate relative to the fixing base 131 .

Further, as shown in FIGS. 2 and 3 , the wheel reducer 140 includes a wheel reducer housing 141 and a wheel reducer assembly 145 . Specifically, the wheel reducer housing 141 is connected to the rotating seat 132 . The wheel reducer housing 141 can rotate relative to the fixed seat 131 along with the rotating seat 132 . In other words, the wheel speed reducer 140 can rotate relative to the vehicle body 210 . The wheel speed reducer assembly 145 is located in the wheel speed reducer housing 141 . The wheel side reduction assembly 145 is connected with the other end of the drive half shaft 120 . The wheel reduction assembly 145 is connected to the end of the driving half shaft 120 away from the final reducer assembly 110 . Optionally, the wheel reduction assembly 145 is a gear set or a worm gear assembly, and the wheel reduction assembly 145 is used to match the rotational speed and transmit the torque. Further, the wheel shaft 150 is connected to the wheel side reduction assembly 145 . When the wheel reducer 140 rotates relative to the vehicle body 210 , the wheel shaft 150 can move relative to the vehicle body 210 . Optionally, the wheel axle 150 is used to connect with the wheel. In the process of transmission of power to the wheel shaft 150 by the power transmission shaft, two decelerations are realized through the main reducer assembly 110 and the wheel side reducer 140. Compared with the method of only passing through one reducer, the speed regulation range is larger. The output torque is also greater.

Further, as shown in FIG. 1 and FIG. 2 , the wheel reducer housing 141 is provided with a connection hole 146 . The connecting hole 146 is used for connecting with the suspension 220 . The connecting hole 146 is connected to the suspension 220 through the telescopic member 230 . The telescopic member 230 can change the overall length and has a first station and a second station. In other words, the telescopic member 230 can be stretched to change its overall length, and the telescopic member 230 has a first station and a second station. Optionally, the telescopic member 230 is a telescopic oil cylinder. Further, when the telescopic member 230 is converted from the first station to the second station or from the second station to the first station, the wheel reducer 140 can rotate relative to the vehicle body 210 . The telescopic member 230 adjusts the swing angle of the wheel reducer 140 by changing its own length. When the wheel reducer 140 swings relative to the vehicle body 210 , the wheel shaft 150 can move relative to the vehicle body 210 . When the telescopic member 230 is at the first station, the wheel reducer 140 swings to the first angle, and the wheel axle 150 is at the first position; when the telescopic member 230 is at the second station, the wheel reducer 140 swings to the second angle, Wheel axle 150 is in the second position. The height of the second location is greater than the height of the first location. When the amphibious vehicle 200 needs to run on land, the telescopic member 230 is in the first position, and the wheel shaft 150 is in the first position, at this time, the wheels can support the vehicle body 210 and run stably; when the amphibious vehicle 200 needs to run on water, The telescopic member 230 is in the second position, the wheel shaft 150 is in the second position, the wheels are retracted and leave the water surface, which is beneficial to reduce the resistance.

In the technical solution defined in the present invention, the amphibious vehicle 200 can not only run stably on land, but also when running on water, the wheels can be flipped along with the wheel-side reducer 140 to make it leave the water to reduce resistance, which is beneficial to improve the amphibious Kinematics of vehicle 200 . In addition, the overall structure of the drive axle 100 of the present invention is novel, ingenious, and highly integrated.

In another embodiment, in the final drive assembly 110, there are two differentials, one of which is used to transmit power to the left wheel of the amphibious vehicle 200, and the other differential is used to transmit power to the left wheel of the amphibious vehicle 200. The right wheel transmits power. Optionally, there are two driving half shafts 120 , and the two driving half shafts 120 are respectively located on the left and right sides of the final reducer assembly 110 . Optionally, the number of the rotating device 130 and the wheel speed reducer 140 are correspondingly set to two. Optionally, the main reducer assembly 110 also includes a differential lock, which can change the left and right driving half shafts 120 into a rigid connection under special circumstances, so as to improve the passing capacity under severe conditions.

In another embodiment, as shown in FIG. 4 , the transaxle 100 further includes an axle tube 160 . Specifically, the shaft tube 160 is connected to the vehicle body 210 . The shaft tube 160 is connected with the final reducer assembly 110 . The driving half shaft 120 is passed through the shaft tube 160 , and the end of the driving half shaft 120 extends into the final reducer assembly 110 and is connected with the side shaft gear.

Embodiment two

As shown in FIGS. 2 and 3 , the rotating device 130 also includes a bearing and an oil seal 135 . Specifically, the rotating base 132 is provided with a first installation cavity 1321 , and the fixing base 131 is passed through the first installation cavity 1321 . The bearing is disposed in the first installation cavity 1321 . The bearing is sleeved on the fixing seat 131 . The outer wall of the bearing is against the cavity wall of the first installation cavity 1321 , and the inner wall of the bearing is against the circumferential side wall of the fixing seat 131 . Optionally, the bearing includes an inner ring layer, a ball layer and an outer ring layer. The inner ring layer is sleeved on the fixing seat 131 , the outer ring layer is sleeved on the inner ring layer, and the ball layer is arranged between the inner ring layer and the outer ring layer. The outer wall of the bearing is the outer wall of the outer ring layer, and the inner wall of the bearing is the inner wall of the inner ring layer. The rotation connection between the rotating seat 132 and the fixed seat 131 can be realized by providing a bearing. Further, the oil seal 135 is disposed in the first installation cavity 1321 . The oil seal 135 passes through the first installation cavity 1321 of the rotating base 132 . The oil seal 135 is against the cavity wall of the first installation cavity 1321 , and the oil seal 135 is against the circumferential side wall of the fixing seat 131 . The oil seal 135 is located on the side of the bearing away from the wheel speed reducer 140 . By setting the oil seal 135, on the one hand, it can play a role of sealing to prevent impurities such as dust from entering and aggravating wear; The installation cavity 1321 flows to the wheel side reducer 140, or flows from the roadside reducer to the first installation cavity 1321, which is beneficial to improve the lubrication effect. It is worth noting that the number of bearings is at least one, that is, there can be one, two or more bearings. Considering the smoothness of rotation of the rotating base 132 relative to the fixed base 131, the size of the occupied space, the cost and other factors, according to actual needs Flexible setting of bearings.

Embodiment Three

As shown in Figure 2 and Figure 3, the cavity wall of the first installation cavity 1321 is provided with a first protrusion 1322, the first protrusion 1322 has a first limiting surface 1323, and the circumferential side wall of the fixing seat 131 is provided with a second The protrusion 1314 and the second protrusion 1314 have a second limiting surface 1315 , and the bearing is located between the first limiting surface 1323 and the second limiting surface 1315 . The first limit surface 1323 is set on one side of the bearing, and the second limit surface 1315 is set on the other side of the bearing. The two limit surfaces can axially limit the bearing to limit the range of axial movement of the bearing. .

In another embodiment, as shown in FIGS. 2 and 3 , the rotating device 130 further includes an axial limiter 136 . Specifically, the axial limiting member 136 is disposed in the first installation cavity 1321 . The axial limiting member 136 is sleeved on the fixing seat 131 . The cavity wall of the first installation cavity 1321 is provided with a first protrusion 1322 , and the first protrusion 1322 has a first limiting surface 1323 . The bearing is located between the axial limiting member 136 and the first limiting surface 1323 . The axial limiter 136 is arranged on one side of the bearing, and the first limiter surface 1323 is arranged on the other side of the bearing. The axial limiter 136 and the first limiter surface 1323 cooperate with each other to axially limit the bearing. , to limit the range of axial movement of the bearing. Optionally, the axial limiting member 136 is a lock nut and/or a stop washer.

Embodiment four

As shown in FIGS. 2 and 3 , the fixing base 131 includes a first segment 1311 and a second segment 1312 . Specifically, the first section 1311 and the second section 1312 are connected to each other. Optionally, the first section 1311 and the second section 1312 have an integrated structure, which has better mechanical properties and higher connection strength compared to the post-processing method, which is conducive to reducing the number of parts and improving assembly efficiency. Further, the distance between the first section 1311 and the final reducer assembly 110 is smaller than the distance between the second section 1312 and the final reducer assembly 110 . It can be understood that, among the first section 1311 and the second section 1312 of the fixing seat 131 , the first section 1311 is closer to the final reducer assembly 110 . The radial dimension of the first section 1311 is larger than the radial dimension of the second section 1312 . Since the end of the fixing seat 131 close to the final drive assembly 110 needs to be connected with the vehicle body 210, the radial dimension of the first section 1311 of the fixing seat 131 closer to the final drive assembly 110 is increased, which is beneficial to improve the structure. strength, reducing the possibility of cracking of the fixing seat 131 due to stress concentration at the connection position. Further, there are two bearings, and the two bearings are the first bearing 133 and the second bearing 134 respectively. The inner diameter of the first bearing 133 is larger than that of the second bearing 134 . The first bearing 133 is sleeved on the first section 1311 , and the second bearing 134 is sleeved on the second section 1312 . By arranging two bearings, compared with the way of only arranging one bearing, the rotation base 132 can be made more stable when rotating relative to the fixed base 131; cost. Since the fixed seat 131 has a variable diameter design, matching the corresponding bearing with the shaft section can make the structure more reasonable and the integration degree higher.

In another embodiment, as shown in FIG. 2 and FIG. 3 , a flange plate 1313 is formed at the end of the fixing seat 131 away from the wheel reducer 140 , and the flange plate 1313 is used for connecting with the vehicle body 210 . By setting the flange plate 1313, on the one hand, it is convenient to install and disassemble; on the other hand, the contact area between the fixing seat 131 and the vehicle body 210 can be increased, which is beneficial to improve the connection strength between the fixing seat 131 and the vehicle body 210 in the connected state .

Embodiment five

As shown in FIG. 1 , FIG. 2 and FIG. 3 , the wheel reducer housing 141 includes a first housing 1411 and a second housing 1412 . Specifically, the first housing 1411 is connected to the rotating seat 132 . The second housing 1412 is connected to the first housing 1411 . The first housing 1411 and the second housing 1412 can rotate relative to the fixed base 131 along with the rotating base 132 . In other words, the wheel reducer housing 141 can rotate relative to the vehicle body 210 through the rotating device 130 . Furthermore, the first housing 1411 and the second housing 1412 define a second installation cavity 1413 , and the wheel speed reduction assembly 145 is disposed in the second installation cavity 1413 . The wheel reduction assembly 145 is used for speed matching and torque transmission. The wheel shaft 150 is connected to the wheel speed reduction assembly 145 . When the wheel reducer 140 rotates relative to the vehicle body 210 , the wheel shaft 150 can move relative to the vehicle body 210 .

Further, the first housing 1411 is detachably connected to the second housing 1412 through the connecting piece 142 . By setting the connecting piece 142, the detachable connection between the first housing 1411 and the second housing 1412 can be realized, which facilitates the disassembly and assembly of the wheel reducer housing 141 and the wheel reducer assembly 145 in the second installation cavity 1413. Perform maintenance or replacement. Optionally, the connecting member 142 is a bolt, a screw or other structures for connecting. Further, the wheel reducer 140 also includes a positioning member 144 . Specifically, the first housing 1411 is provided with a first groove 1431 on the side facing the second housing 1412, and the second housing 1412 is provided with a second groove 1432 on the side facing the first housing 1411. The first groove 1431 and The second slot 1432 constitutes the positioning slot 143 . The positioning member 144 is disposed in the positioning groove 143 . The assembly positioning can be realized through the mutual cooperation of the positioning member 144 and the positioning groove 143 . Optionally, the positioning groove 143 is a positioning pin hole, and the positioning member 144 is a positioning pin.

Further, the wheel reduction assembly 145 includes a first gear 1451 , a second gear 1452 , a third gear 1453 and a fourth gear 1454 . Specifically, the first gear 1451 is disposed in the housing. The first gear 1451 is connected with the end of the driving half shaft 120 away from the final reducer assembly 110 . Optionally, the first gear 1451 is connected to the driving half shaft 120 through a spline structure. Further, the second gear 1452 is disposed in the housing. The third gear 1453 is disposed in the housing. The fourth gear 1454 is disposed in the housing. The second gear 1452 meshes with the first gear 1451 , the third gear 1453 meshes with the second gear 1452 , and the fourth gear 1454 meshes with the third gear 1453 . The fourth gear 1454 is connected to the wheel shaft 150 . The drive shaft 120 transmits power to the wheel shaft 150 through the first gear 1451 , the second gear 1452 , the third gear 1453 and the fourth gear 1454 in sequence. The three-stage speed change of the wheel speed reducer 140 in the process of the drive shaft 120 transmitting the power to the wheel shaft 150 is beneficial to increase the speed regulation range and output torque.

In another embodiment, the number of connecting holes 146 is at least two, at least one connecting hole 146 is disposed in the first housing 1411 , and at least one connecting hole 146 is disposed in the second housing. By providing at least one connection hole 146 on the first housing 1411 and at least one connection hole 146 on the second housing 1412, the telescopic member 230 can be connected to the first housing 1411 and the second housing 1412 at the same time, ensuring that the first housing 1411 The first casing 1411 and the second casing 1412 rotate relative to the fixed base 131 at the same time, reducing the possibility of damage or even breaking of the connecting element 142 due to excessive torque.

Embodiment six

As shown in FIG. 5 , an amphibious vehicle 200 provided by an embodiment of the present invention includes a vehicle body 210 , a suspension 220 , a telescoping member 230 and the drive axle 100 in any of the above-mentioned embodiments. Specifically, the suspension 220 is connected to the vehicle body 210 . The final drive assembly 110 of the drive axle 100 is connected to the vehicle body 210 . Optionally, the vehicle body 210 is a load-bearing vehicle body. The final reducer assembly 110 is directly installed on the vehicle body 210 , which is beneficial to improve the structural strength and bearing capacity of the vehicle body 210 . Optionally, the vehicle body 210 is provided with a mounting groove, and the final reducer assembly 110 is disposed in the mounting groove. Further, the rotating device 130 of the transaxle 100 is connected to the vehicle body 210 . The fixing seat 131 of the rotating device 130 is connected with the vehicle body 210 through the flange plate 1313 . Further, the telescopic member 230 is connected with the suspension 220 . The connecting hole 146 of the drive axle 100 is connected to the telescopic member 230 . The telescopic member 230 can be stretched to change its overall length, and the telescopic member 230 has a first station and a second station. Optionally, the telescopic member 230 is a telescopic oil cylinder. Further, when the telescopic member 230 is converted from the first station to the second station or from the second station to the first station, the wheel reducer 140 can rotate relative to the vehicle body 210 . The telescopic member 230 adjusts the turning angle of the wheel reducer 140 by changing its own length. When the wheel reducer 140 rotates relative to the vehicle body 210 , the wheel shaft 150 can move relative to the vehicle body 210 . When the telescopic member 230 is at the first station, the wheel reducer 140 rotates to the first angle, and the wheel axle 150 is at the first position; when the telescopic member 230 is at the second station, the wheel reducer 140 rotates to the second angle, Wheel axle 150 is in the second position. The height of the second location is greater than the height of the first location. When the amphibious vehicle 200 needs to run on land, the telescopic member 230 is in the first position, and the wheel shaft 150 is in the first position, at this time, the wheels can support the vehicle body 210 and run stably; when the amphibious vehicle 200 needs to run on water, The telescopic member 230 is in the second position, the wheel shaft 150 is in the second position, the wheels are retracted and leave the water surface, which is beneficial to reduce the resistance.

In another embodiment, the installation sequence of the drive axle 100 is as follows: firstly install the main reducer assembly 110 on the vehicle body 210, and then install the rotatable wheel-side reducer assembly (including the driving half shaft 120, the rotating device 130 and the drive axle 120 of the wheel reducer 140) are correspondingly inserted into the final drive assembly 110, and finally the fixed seat 131 of the rotating device 130 of the wheel reducer assembly is installed on the car body 210 correspondingly, and bolted fixed.

The input flange of the main reducer assembly 110 is connected to the power transmission shaft, and the power is transmitted from the main reducer assembly 110 to the left and right two driving half shafts 120, and the left and right driving half shafts 120 pass through the wheel reducer 140 and then to the The wheel shaft 150 is equipped with wheels to realize the drive of the axle.

The fixed seat 131 is fixed on the vehicle body 210, and the wheel reducer assembly except the fixed seat 131 can rotate around the vehicle body 210, and the first housing 1411 of the wheel reducer 140 is provided with the second housing 1412. The connecting hole 146 of the hanger 220 can be retracted. Through the function of the retractable suspension 220, the swing position of the wheel reducer 140 is limited, so that the drive axle 100 can travel on land, and the wheel reducer 140 can be retracted to reduce resistance when driving in water.

According to the embodiment of the drive axle and the amphibious vehicle of the present invention, when the amphibious vehicle needs to run on land, the telescopic member is in the first position, and the wheel axle is in the first position, and the wheels can support the vehicle body and run stably; When the amphibious vehicle needs to run on water, the telescopic member is in the second position, the wheel axle is in the second position, and the wheels are retracted and leave the water surface, which is beneficial to reduce resistance. The amphibious vehicle can not only run stably on land, but also when running on water, the wheels can be flipped along with the wheel reducer to make it leave the water to reduce resistance, which is beneficial to improve the movement performance of the amphibious vehicle. In addition, the overall structure layout of the driving axle of the present invention is novel, ingenious and highly integrated.

In the present invention, the terms "first", "second", and "third" are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance; the term "plurality" refers to two or two above, unless expressly limited otherwise. The terms "installation", "connection", "connection", "fixed" and other terms should be interpreted in a broad sense, for example, "connection" can be fixed connection, detachable connection, or integral connection; "connection" can be directly or indirectly through an intermediary. Those of ordinary skill in the art can understand the specific meanings of the above terms in the present invention according to specific situations.

In the description of the present invention, it should be understood that the orientation or positional relationship indicated by the terms "upper", "lower", "left", "right", "front", "rear" etc. is based on the orientation shown in the drawings Or positional relationship is only for the convenience of describing the present invention and simplifying the description, but does not indicate or imply that the referred device or unit must have a specific direction, be constructed and operated in a specific orientation, and therefore, should not be construed as a limitation of the present invention.

In the description of this specification, descriptions of the terms "one embodiment", "some embodiments", "specific embodiments" and the like mean that specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in the present invention In at least one embodiment or example of . In this specification, schematic representations 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 any one or more embodiments or examples.

The above are only preferred embodiments of the present invention, and are not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and changes. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention shall be included within the protection scope of the present invention.

Claims (10)

1. A driving axle, characterized in that, comprising: The final reducer assembly (110), used for connecting with the vehicle body (210); a drive half shaft (120), one end of the drive half shaft (120) is connected to the final reducer assembly (110); Rotary device (130), comprising: The fixed seat (131) is used to connect with the vehicle body (210), the fixed seat (131) is sleeved on the driving half shaft (120), and the driving half shaft (120) can be fixed relative to the Seat (131) rotates; a rotating seat (132), which is rotatably arranged on the fixed seat (131); Wheel reducer (140), comprising: The wheel reducer housing (141) is connected with the swivel seat (132), and the wheel reducer housing (141) is provided with a connecting hole (146), and the connecting hole (146) is used for connecting with The suspension (220) is connected, and the connection hole (146) is connected with the suspension (220) through a telescopic piece (230). The telescopic piece (230) can change the overall length and has a first station and a second station. Station, when the telescopic member (230) is converted from the first station to the second station or from the second station to the first station, the wheel reducer ( 140) being capable of swinging relative to the vehicle body (210); A wheel-side reduction assembly (145), which is arranged in the wheel-side reducer housing (141), and the wheel-side reduction assembly (145) is connected to the other end of the drive half shaft (120); The wheel shaft (150) is connected with the wheel side reduction assembly (145), and when the wheel side speed reducer (140) rotates relative to the vehicle body (210), the wheel shaft (150) can body (210) moves, the telescopic member (230) is under the first station, the wheel axle (150) is at the first position, the telescopic member (230) is under the second station, The wheel axle (150) is in a second position, and the height of the second position is greater than the height of the first position. 2. The driving axle according to claim 1, characterized in that, the rotating base (132) is provided with a first installation cavity (1321), and the fixing base (131) is passed through the first installation cavity ( 1321), the rotating device (130) also includes: At least one bearing is arranged in the first installation cavity (1321), the bearing is sleeved on the fixing seat (131), and the outer wall of the bearing is against the cavity wall of the first installation cavity (1321) , the inner wall of the bearing is against the circumferential side wall of the fixing seat (131); The oil seal (135) is set in the first installation cavity (1321), the oil seal (135) is penetrated in the first installation cavity (1321), and the oil seal (135) is set on the bearing away from the One side of the wheel speed reducer (140). 3. The driving axle according to claim 2, characterized in that, the cavity wall of the first installation cavity (1321) is provided with a first protrusion (1322), and the first protrusion (1322) has a first The limiting surface (1323), the circumferential side wall of the fixing seat (131) is provided with a second protrusion (1314), the second protrusion (1314) has a second limiting surface (1315), the The bearing is located between the first limiting surface (1323) and the second limiting surface (1315); and/or The cavity wall of the first installation cavity (1321) is provided with a first protrusion (1322), the first protrusion (1322) has a first limit surface (1323), and the rotation device (130) also includes : An axial limiter (136) is arranged in the first installation cavity (1321), the axial limiter (136) is sleeved on the fixed seat (131), and the bearing is located on the shaft between the limiting member (136) and the first limiting surface (1323). 4. The driving axle according to claim 2, characterized in that, the fixed seat (131) comprises a first segment (1311) and a second segment (1312) connected, and the first segment (1311) is connected to the second segment (1312). The distance between the main reducer assembly (110) is smaller than the distance between the second section (1312) and the main reducer assembly (110), and the radial dimension of the first section (1311) is larger than the first section (1311) The radial dimension of the second section (1312), the number of the bearings is two, the two bearings are respectively the first bearing (133) and the second bearing (134), the inner diameter of the first bearing (133) greater than the inner diameter of the second bearing (134), the first bearing (133) is sleeved on the first section (1311), and the second bearing (134) is sleeved on the second section (1312 ). 5. The drive axle according to any one of claims 1 to 4, characterized in that, a flange plate (1313) is formed at the end of the fixing seat (131) away from the wheel reducer (140), The flange plate (1313) is used for connecting with the vehicle body (210). 6. The drive axle according to any one of claims 1 to 4, characterized in that, the wheel-side reducer housing (141) comprises: The first housing (1411) is connected to the rotating seat (132); The second housing (1412) is connected to the first housing (1411), and the first housing (1411) and the second housing (1412) enclose a second installation cavity (1413), The wheel reduction assembly (145) is arranged in the second installation cavity (1413). 7. The driving axle according to claim 6, characterized in that, the first housing (1411) and the second housing (1412) are detachably connected through a connecting piece (142), and the first housing The body (1411) is provided with a first groove (1431) on one side facing the second casing (1412), and the second casing (1412) is provided with a second groove (1431) on one side facing the first casing (1411). Slot (1432), the first slot (1431) and the second slot (1432) form a positioning slot (143), and the wheel reducer (140) also includes: The positioning piece (144) is arranged in the positioning groove (143). 8. The drive axle according to any one of claims 1 to 4, characterized in that, the wheel side reduction assembly (145) comprises: The first gear (1451), arranged in the housing, is connected to the end of the driving half shaft (120) away from the final reducer assembly (110); a second gear (1452), arranged in the housing, the second gear (1452) meshing with the first gear (1451); a third gear (1453), arranged in the housing, the third gear (1453) meshing with the second gear (1452); The fourth gear (1454) is arranged in the housing, the fourth gear (1454) meshes with the third gear (1453), and the fourth gear (1454) is connected to the wheel axle (150) . 9. The driving axle according to claim 6, characterized in that, the number of the connecting holes (146) is at least two, and at least one of the connecting holes (146) is provided in the first housing (1411) , at least one connecting hole (146) is provided in the second casing (1412). 10. An amphibious vehicle, further comprising: car body (210); a suspension (220), connected to the vehicle body (210); A telescopic member (230), connected to the suspension (220); The driving axle according to any one of claims 1 to 9, the final drive assembly (110) of the driving axle is connected to the vehicle body (210), and the rotating device (130) of the driving axle is connected to the The vehicle body (210) is connected, and the connection hole (146) of the driving axle is connected with the telescopic member (230).

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