Double-wheel driving mechanism self-adaptive to road surface

Abstract

The double-wheel driving mechanism comprises an axle, a wheel rotating shaft, a brake system assembly, a hub connecting piece and side-by-side wheels, the side-by-side wheels are connected to the two sides of the hub connecting piece respectively, the wheel rotating shaft is arranged in the axle, a cylindrical wheel end flange is coaxially arranged outside the wheel rotating shaft, and the hub connecting piece is arranged in the axle. A bearing is sleeved on the outer wall of the cylinder of the wheel end flange, the wheel end flange is connected with a hub bearing mounting seat into a whole through the bearing, and the hub bearing mounting seat is rotatably connected with the axle through a wheel end rotating shaft; the wheel rotating shaft comprises a rotating shaft body and a front-end transmission shaft, and the rotating shaft body and the front-end transmission shaft are connected through a spherical hinge mechanism. The front end transmission shaft is fixedly connected with the wheel end flange; and the wheel end flange is fixedly connected with the hub connecting piece through the connecting part. The wheel set can swing at a certain angle relative to the axle, so that severe working conditions such as single-wheel stress are effectively avoided, the loss of the wheel is reduced, and the service life of the wheel is prolonged.

Description

Technical Field

[0001] The invention relates to the field of automobile parts, and in particular to a dual-wheel drive mechanism capable of self-adapting to road surfaces. Background Art

[0002] Since trucks need to carry a lot of weight, their rear wheel design often uses two tires in a row to increase the load-bearing capacity. In addition, this design can also provide better stability when the truck is driving, reduce the wear rate of the tires, and enhance driving safety.

[0003] However, in the existing structure, two side-by-side wheels are connected to the same cylindrical hub connector, hub flanges are provided at both ends of the hub connector, and the two wheels are respectively connected to the hub flanges at both ends, and then the hub connector and the axle are fixedly connected by bolts. The disadvantage of this structure is that when the road surface is uneven or has potholes, one tire may be stressed while the other tire is tilted, resulting in a single tire being stressed, which increases wheel wear and reduces the service life of the wheel. Summary of the invention

[0004] In view of the above problems, the present invention provides a dual-wheel drive mechanism with adaptive road conditions to solve the problem in the prior art that wheel wear and reduced wheel service life are caused by harsh working conditions such as single wheel stress.

[0005] A dual-wheel drive mechanism for adaptive road surface, comprising a vehicle axle, a wheel shaft, a brake system assembly, a wheel hub connector, and side-by-side wheels, wherein the side-by-side wheels are respectively connected to both sides of the wheel hub connector, and the wheel shaft is arranged in the vehicle axle, characterized in that a cylindrical wheel end flange is coaxially arranged outside the wheel shaft, a bearing is sleeved on the cylindrical outer wall of the wheel end flange, the wheel end flange is connected to a wheel hub bearing mounting seat as a whole through the bearing, and the wheel hub bearing mounting seat is rotatably connected to the vehicle axle through the wheel end shaft; The wheel shaft includes a shaft body and a front end transmission shaft, and the shaft body and the front end transmission shaft are connected through a ball joint mechanism; the front end transmission shaft is fixedly connected to the wheel end flange; the wheel end flange is fixedly connected to the wheel hub connector through a connecting component.

[0006] Preferably, the connecting component is a connecting plate.

[0007] Preferably, a swing limit baffle is provided between the wheel hub bearing mounting seat and the axle to limit the swing angle of the wheel.

[0008] Preferably, the cylindrical wheel end flange is mounted on the outside of the wheel shaft with a spacing therebetween, that is, there is a gap between the wheel end flange and the wheel shaft in the axial direction.

[0009] When the vehicle moves forward, the wheel shaft rotates, driving the wheel end flange to rotate around the wheel shaft axis. Under the action of the bearing, the wheel end flange rotates relative to the axle. The rotation of the wheel end flange drives the wheel hub connector to rotate synchronously, thereby driving the side-by-side wheels to rotate and realize the vehicle moving forward.

[0010] Since the side-by-side wheels, wheel hub connectors, wheel end flanges, front-end drive shafts, bearings, and wheel hub bearing mounting seats are connected to form a whole, the wheel hub connector is connected to the front-end drive shaft via the wheel end flange, and the front-end drive shaft is connected to the shaft body via a ball joint mechanism; when the road surface is uneven or has potholes, the overall structure swings around the wheel end shaft (rotates at a small angle), allowing the side-by-side wheels to swing around the wheel end shaft, keeping the shaft body and the axle stable.

[0011] The beneficial effects of the present invention are: The invention can realize power drive and braking like the traditional axle, and the wheel set can also swing at a certain angle relative to the axle, thereby effectively avoiding the harsh working conditions such as single wheel stress, reducing wheel loss and extending wheel service life. It is a great improvement especially for heavy-load transport vehicles.

[0012] Compared with the traditional axle, the present invention: 1. A rotating swing mechanism is added between the axle and the hub flange to achieve the swing between the wheel and the axle; 2. There is a swing limit baffle between the wheel hub bearing mounting seat and the axle to limit the wheel swing angle; 3. Compared with the traditional axle drive shaft, the drive shaft assembly has a ball joint mechanism in the middle to prevent power loss when the wheel set rotates.

[0013] 4. The brake system assembly can be a traditional axle drum brake or a disc brake. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 Schematic diagram of a two-wheel drive mechanism with adaptive road surface.

[0015] Figure 2 The diagram is a schematic diagram with wheels omitted.

[0016] Figure 3 for Figure 2 The enlarged schematic diagram of the hub connector is omitted.

[0017] Figure 4 The cross-sectional schematic diagram of the wheel is omitted in the present invention.

[0018] Figure 5 for Figure 4 The schematic diagram of the hub connector is omitted.

[0019] Among them, 1. Axle device housing; 2. Brake system assembly; 3. Hub connecting piece; 31. Connecting plate; 4. Wheel end rotating shaft; 5. Hub bearing mounting seat; 6. Bearing; 7. Wheel end flange; 8. Two side-by-side wheels; 9. Wheel rotating shaft; 10. Axle; 91. Rotating shaft body; 92. Front drive shaft Detailed implementation mode

[0020] The technical solution of the present invention will be described below in conjunction with the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all of the embodiments; and the structures shown in the drawings are only schematic and do not represent real objects. It should be noted that based on these embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art belong to the scope of protection of the present application.

[0021] It should be noted that in this article, the term "comprising" or any other variant thereof is intended to cover non-exclusive inclusion, so that a process, method, article or device comprising a series of elements not only includes those elements, but also includes other elements not expressly listed, or also includes elements inherent to such process, method, article or device. Without further limitation, an element defined by the phrase "comprising one..." does not exclude the presence of additional identical or equivalent elements in the process, method, article or device comprising the element.

[0022] Terms such as "upper", "lower", "inner", "outer", etc. do not constitute an absolute spatial relationship limitation, but only a concept of relative position. This is understandable to those skilled in the art.

[0023] See Figures 1-5 , a two-wheel drive mechanism adaptable to the road surface, including an axle 10, a wheel rotating shaft 9, a brake system assembly 2, a hub connecting piece 3, and two side-by-side wheels 8. The brake system assembly 2 is fixedly installed on the axle 10. The wheel rotating shaft 9 is arranged inside the axle 10. The two ends of the hub connecting piece 3 are provided with hub flanges. The two side-by-side wheels 8 are respectively connected to the hub flanges. These are all conventional structures and will not be elaborated here.

[0024] An axle device housing 1 is arranged at the end of the axle 10.

[0025] A cylindrical wheel end flange 7 is coaxially arranged outside the wheel rotating shaft 9, and the cylindrical wheel end flange 7 is sleeved outside the wheel rotating shaft 9 at intervals. That is, there is a gap between the wheel end flange 7 and the wheel rotating shaft 9 in the axial direction.

[0026] A bearing 6 is mounted on the cylindrical outer wall of the wheel end flange 7, and the wheel end flange 7 is connected to a wheel hub bearing mounting seat 5 as a whole through the bearing 6. The wheel hub bearing mounting seat 5 is rotatably connected to the axle device housing 1 of the axle through the wheel end rotating shaft 4; under the action of the bearing 6, the wheel end flange 7 can rotate around the center line of the wheel end flange 7 relative to the wheel hub bearing mounting seat.

[0027] The wheel shaft 9 includes a shaft body 91 and a front end transmission shaft 92, and the shaft body 91 and the front end transmission shaft 92 are connected by a ball joint mechanism 93; the end of the front end transmission shaft is a T-shaped structure, and the T-shaped structure of the front end transmission shaft 92 is fixedly connected to the wheel end flange 7; the wheel end flange 7 is fixedly connected to the hub connector 3 through a connecting plate 31.

[0028] A swing limit baffle is arranged between the wheel hub bearing mounting seat and the axle to limit the swing angle of the wheel.

[0029] When the vehicle moves forward, the front end transmission shaft 92 of the wheel shaft 9 rotates to drive the wheel end flange 7 to rotate around the axis of the wheel shaft. Under the action of the bearing 6, the wheel end flange 7 rotates relative to the axle device housing 1 and the hub bearing mounting seat 5. The rotation of the wheel end flange 7 drives the hub connector 3 to rotate synchronously, thereby driving the side-by-side wheels 8 to rotate, so that the vehicle moves forward.

[0030] Since the side-by-side wheels 8, wheel hub connector 3, wheel end flange 7, front drive shaft 92, bearing 6, and wheel hub bearing mounting seat 5 are connected to form a whole, the wheel hub connector 3 is fixedly connected to the front drive shaft 92 through the wheel end flange 7 (such as bolt connection), and the front drive shaft 92 is connected to the shaft body 91 through a ball joint mechanism 93; when the road surface is uneven or there are potholes, the overall structure swings around the wheel end shaft 4 (rotates at a small angle), so that the side-by-side wheels swing around the wheel end shaft 4, and the shaft body and the axle are kept stable. This effectively avoids harsh working conditions such as single wheel stress, reduces wheel loss, and extends the service life of the wheel. Especially for heavy-load transport vehicles, there is a great improvement.

[0031] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The above embodiments and descriptions only describe the principles of the present invention. The present invention may be subject to various changes and improvements without departing from the spirit and scope of the present invention. These changes and improvements fall within the scope of the present invention. The scope of protection claimed by the present invention is defined by the attached claims and their equivalents.

Claims

1. A dual-wheel drive mechanism with adaptive road surface, comprising a vehicle axle, a wheel shaft, a brake system assembly, a wheel hub connector, and side-by-side wheels, wherein the side-by-side wheels are respectively connected to both sides of the wheel hub connector, and the wheel shaft is arranged in the vehicle axle, characterized in that: A cylindrical wheel end flange is coaxially arranged outside the wheel shaft, a bearing is sleeved on the cylindrical outer wall of the wheel end flange, the wheel end flange is connected to a wheel hub bearing mounting seat through the bearing as a whole, and the wheel hub bearing mounting seat is rotatably connected to the axle through the wheel end shaft; The wheel shaft includes a shaft body and a front end transmission shaft, and the shaft body and the front end transmission shaft are connected through a ball joint mechanism; the front end transmission shaft is fixedly connected to the wheel end flange; the wheel end flange is fixedly connected to the wheel hub connector through a connecting component.

2. The dual-wheel drive mechanism for adaptive road surface according to claim 1 is characterized in that: The connecting component is a connecting plate.

3. The dual-wheel drive mechanism for adaptive road surface according to claim 1 is characterized in that: A swing limit baffle is arranged between the wheel hub bearing mounting seat and the axle to limit the swing angle of the wheel.

4. The dual-wheel drive mechanism for adaptive road surface according to claim 1 is characterized in that: The cylindrical wheel end flange is fitted onto the outside of the wheel shaft with a spacing therebetween.

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