Double-tire wheel set suspension system

Abstract

The utility model discloses a double-tire wheel set suspension system which comprises a first tire and a second tire, the first tire and the second tire are respectively and fixedly arranged on mutually independent rotating shafts and are connected together through a differential mechanism assembly, and the differential mechanism assembly is provided with a transmission shaft used for being connected with an external driving system. The transmission shaft is vertically arranged; the vertically-installed suspension assembly is connected to a shell of the differential mechanism assembly from the position over the differential mechanism assembly, a main shaft is fixedly arranged at the upper end of the suspension assembly, the main shaft is of a hollow structure, the transmission shaft penetrates through the main shaft, and the transmission shaft and the main shaft are coaxial. The differential assembly is additionally arranged between the two tires, relative abrasion between the tires and the ground during turning is reduced, and the service life of the wheels is prolonged. The suspension assembly is vertically installed, the main shaft is fixedly arranged on the suspension assembly, and the external steering driving mechanism drives the main shaft and the suspension assembly to rotate integrally, so that the differential mechanism assembly is driven to rotate, and wheel steering is achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of dual-tire wheel sets, in particular to a dual-tire wheel set suspension system. Background Art

[0002] The front and rear wheels of diamond-shaped cars are mostly double-tire wheels, similar to the front landing gear wheels of airplanes. The double-tire wheels can improve the safety of diamond-shaped cars during driving; at the same time, it also improves the overall load-bearing capacity.

[0003] At present, the existing diamond-shaped automobile dual-tire wheel sets are directly fixed together by bolts. When the car turns, due to the different turning radius of the first tire and the second tire in the dual-tire wheel set, the first tire and the second tire interfere with each other during the turning process, affecting the safety performance of the car. At this time, the dual-tire wheel set only relies on friction to turn when turning. When the car makes a sharp turn at high speed, the friction phenomenon is serious, which affects the service life of the tires, increases the steering resistance, and even affects safe driving.

[0004] In addition, the suspension system of the dual-tire wheel set does not rotate around its own axis when the tire turns, and requires a complex transmission mechanism. Summary of the invention

[0005] In view of the above problems, the utility model provides a novel dual-tire wheel set suspension system to solve the problems of interference and tire wear between the first tire and the second tire during turning caused by the different turning radii of the first tire and the second tire in the dual-tire wheel set in the prior art.

[0006] A dual-tire wheel suspension system, comprising a first tire and a second tire arranged side by side, characterized in that the first tire and the second tire are respectively fixedly arranged on two independent rotating shafts, and the first tire and the second tire are connected together through a differential assembly, and the differential assembly is provided with a transmission shaft for connecting to an external drive system, and the transmission shaft is arranged vertically;

[0007] The vertically mounted suspension assembly is connected to the outer shell of the differential assembly from directly above the differential assembly. A main shaft for connecting to an external steering drive mechanism is fixedly provided at the upper end of the suspension assembly. The main shaft is a hollow structure, and the transmission shaft passes through the main shaft, and the transmission shaft is coaxial with the main shaft.

[0008] The external steering drive mechanism drives the main shaft and the suspension assembly to rotate as a whole, thereby driving the differential assembly to rotate and realize wheel steering.

[0009] Preferably, the shell is a high-strength metal shell with strong pressure resistance.

[0010] Preferably, the transmission shaft is located directly above the rotation axis of the dual-tire wheel set.

[0011] Preferably, the main shaft is connected to a mounting bracket for connecting to a vehicle body via a bearing.

[0012] Preferably, a rotating pin is provided on the housing of the differential assembly along the front-rear direction of the wheel, and the suspension assembly is swingably connected to the housing via the rotating pin. Further, a transmission shaft receiving groove is provided on the housing, and a vertically arranged transmission shaft passes through the transmission shaft receiving groove, and the transmission shaft can swing along the transmission shaft receiving groove, and a soft rubber cover is provided on the transmission shaft receiving groove to prevent dust from entering.

[0013] Preferably, the suspension assembly includes a lower end support of the suspension, a first hydraulic cylinder, an upper end support of the suspension, and a second hydraulic cylinder; both ends of the lower end support of the suspension are mounted on the rotating pin, the lower ends of the first hydraulic cylinder and the second hydraulic cylinder are connected to the two ends of the lower end support of the suspension, the upper end support of the suspension is connected to the upper ends of the first hydraulic cylinder and the second hydraulic cylinder, and the main shaft is arranged in the middle of the upper end support of the suspension.

[0014] Preferably, the differential assembly includes a hollow shell, the side wall of the shell is formed with a half-shaft mounting hole for mounting the half-shaft, two rotating shafts are respectively extended into the shell through the half-shaft mounting hole through the bearing, the two rotating shafts are respectively connected with side gears, a star gear is arranged between the two side gears, a bracket is sleeved on one of the shafts, the star gear can be connected to the bracket in a self-rotating manner, the star gear is meshed with the two side gears at the same time, a ring gear is fixedly arranged on the bracket, and the ring gear is connected to the input shaft in driving connection. Further, the transmission shaft is connected to the input shaft through an internal spline, and when the differential assembly and the wheel bounce, the up and down bounce slip is absorbed by the internal spline.

[0015] The external driving system drives the ring gear to rotate through the transmission shaft, the ring gear drives the bracket to rotate, the bracket drives the star gear to revolve, thereby driving the side gears to rotate, and the side gears drive the wheels to rotate.

[0016] Beneficial effects of the utility model:

[0017] 1. Compared with the existing dual-tire wheel set structure, the utility model adds a differential assembly between the two tires, which can effectively reduce the relative wear between the tires and the ground when turning, and extend the service life of the wheels.

[0018] 2. The suspension assembly is installed vertically, and the force direction is consistent with the gravity direction of the vehicle body. The main shaft is fixed on the suspension assembly. The external steering drive mechanism drives the main shaft and the suspension assembly to rotate as a whole, thereby driving the differential assembly to rotate and realize the steering of the wheel group.

[0019] 3. The transmission shaft is coaxial with the main shaft. When the wheels turn, the transmission shaft is not affected by the turning.

[0020] 4. The suspension assembly is swingably connected to the housing of the differential assembly through a rotating pin. This connection method can realize the swing of the left and right wheels, adaptively fit the road surface, and improve the driving stability of the vehicle.

[0021] 5. The first hydraulic cylinder and the second hydraulic cylinder form an oil-gas spring with the external control element, solenoid valve, energy storage device and pipeline, which can actively adjust the stiffness, significantly alleviate the impact, reduce the bumps, thereby improving the driver's working conditions and increasing the average vehicle speed.

[0022] 6. When the differential assembly and the wheel bounce, the internal spline absorbs the up and down bounce and slip. The suspension bounce is achieved by the hydraulic cylinder sliding. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 Schematic diagram of the dual-tire wheel suspension system.

[0024] Figure 2 This is a top view with the tires omitted.

[0025] Figure 3 It is a partial cross-sectional schematic diagram of the dual-tire wheel suspension system.

[0026] Figure 4 It is a three-dimensional schematic diagram of the dual-tire wheel suspension system.

[0027] Figure 5 for Figure 4 Diagram of tires omitted.

[0028] Figure 6 Schematic diagram of the dual-tire wheel suspension system with omitted tires.

[0029] First tire - 11, second tire - 12, rotating shaft - 13, rotating shaft - 14, differential assembly - 20, housing - 21, ring gear - 22, input shaft - 23, gear - 24, transmission shaft - 25, rotating pin - 26, transmission shaft receiving groove - 27, suspension assembly - 30, suspension lower end support - 31, first hydraulic cylinder - 32, suspension upper support - 33, second hydraulic cylinder - 34, transmission shaft fixing seat - 35, differential assembly input shaft fixing seat - 36, main shaft - 37, mounting support - 38 DETAILED DESCRIPTION

[0030] The technical solution of the utility model will be described below in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the implementation methods of the present application, not all of the implementation methods; and the structures shown in the accompanying drawings are only schematic and do not represent physical objects. It should be noted that based on these embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field are within the scope of protection of this application.

[0031] It should be noted that the term "comprises" or any other variant thereof is intended to cover non-exclusive inclusion in this article, so that a process, method, article or device including a series of elements includes not only those elements, but also includes other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of more restrictions, the elements defined by the sentence "comprises a ..." do not exclude the existence of other identical or equivalent elements in the process, method, article or device including the elements.

[0032] The terms "upper", "lower", "inner", "outer", etc. do not constitute absolute spatial relationship limitations, but are only concepts of relative positions, which can be understood by those skilled in the art.

[0033] See also Figure 1-6 Taking the front and rear wheels of a diamond-shaped car as an example, the first tire 11 and the second tire 12 are arranged side by side, which significantly increases the driving load of the vehicle.

[0034] The first tire 11 and the second tire 12 are respectively fixedly arranged on two independent rotating shafts (13, 14), and the two rotating shafts (13, 14) are connected together through a differential assembly 20, and the differential assembly 20 is located between the first tire 11 and the second tire 12.

[0035] In this embodiment, the differential assembly includes a hollow shell 21, which is a high-strength metal shell with strong pressure resistance. The side wall of the shell is formed with a half-shaft mounting hole for mounting the half-shaft. The two rotating shafts extend into the shell 21 through the half-shaft mounting holes through the bearings. The two rotating shafts are respectively connected with side gears. A star gear is arranged between the two side gears. The bracket is mounted on one of the shafts. The star gear can be connected to the bracket in a self-rotating manner. The star gear meshes with the two side gears at the same time. A ring gear 22 is fixedly arranged on the bracket. The ring gear 22 is meshed and transmission-connected with the gear 24 at the front end of the input shaft 23. The mechanical structure of the differential assembly adopts a conventional structure, which will not be described in detail here. The suspension assembly 30 of the utility model is installed on the shell 21 of the differential assembly.

[0036] The differential assembly 20 is provided with a transmission shaft 25 for connecting to an external drive system, and the transmission shaft 25 is vertically arranged; the transmission shaft 25 is connected to the input shaft 23 through an internal spline, and when the differential assembly 20 and the wheel bounce, the up and down bounce slip is absorbed through the internal spline.

[0037] When the truck moves forward, the input shaft 23 drives the ring gear 22 to rotate, the ring gear 22 drives the bracket to rotate, the bracket drives the star gear to revolve, the star gear drives the two side gears to rotate synchronously, and the two side gears drive the wheels to rotate synchronously.

[0038] When the truck turns left, the turning radius of the left tire is small, and the turning radius of the right tire is large. The input shaft 23 drives the ring gear to rotate, and the bracket drives the star gear to revolve. At the same time, the star gear rotates under pressure, driving the side gear on the right to rotate faster, so that the rotation speed of the side gear on the right is faster than that of the side gear on the left, so that the rotation speed of the left tire is slow and the rotation speed of the right tire is fast.

[0039] The addition of a differential assembly can effectively reduce the relative wear between the tire and the ground when turning, especially when turning, and extend the service life of the wheel.

[0040] The suspension assembly 30 is in a vertical state. The suspension assembly 30 is connected to the housing 21 of the differential assembly from directly above the differential assembly 20. Specifically, a rotating pin 26 is provided on the housing 21 of the differential assembly along the front-rear direction of the wheel, and the suspension assembly 30 is connected to the rotating pin 26 and is swingably connected to the housing 21 through the rotating pin 26.

[0041] The suspension assembly 30 includes a suspension lower end support 31, a first hydraulic cylinder 32, a suspension upper support 33, a second hydraulic cylinder 34, a transmission shaft fixing seat 35, and a differential assembly input shaft fixing seat 36;

[0042] The two ends of the lower end support 31 of the suspension are sleeved on the rotating pin 26, the lower ends of the first hydraulic cylinder 32 and the second hydraulic cylinder 34 are connected to the two ends of the lower end support 31 of the suspension, and the upper end of the suspension support 33 is connected to the upper ends of the first hydraulic cylinder and the second hydraulic cylinder. A transmission shaft receiving groove 27 is provided on the housing 21 of the differential assembly 20, and the input shaft 23 can swing along the transmission shaft receiving groove 27. A soft rubber cover (not marked in the figure) to prevent dust from entering is provided on the transmission shaft receiving groove 27. A transmission shaft fixing seat 35 and a differential assembly input shaft fixing seat 36 are provided between the first hydraulic cylinder 32 and the second hydraulic cylinder 34; after the input shaft 23 passes through the transmission shaft receiving groove 27, it passes through the differential assembly input shaft fixing seat 36 and is spline-connected with the transmission shaft 25. The transmission shaft 25 passes through the transmission shaft fixing seat 35, and a main shaft 37 is fixedly provided in the middle of the upper support 31 of the suspension. The main shaft 37 is used to connect the external steering drive mechanism. The main shaft 37 is connected to the mounting bracket 38 for connecting the vehicle body through a bearing. The main shaft 37 is a hollow structure, and the transmission shaft 25 passes through the main shaft 37. The transmission shaft 25 is coaxial with the main shaft. The transmission shaft 25 is located directly above the rotating shaft of the dual-tire wheel set. The first hydraulic cylinder 32 and the second hydraulic cylinder 34 form an oil-gas spring with the external control element, the solenoid valve, the energy storage device, the suspension upper bracket 33 and the pipeline, which can actively adjust the stiffness, significantly mitigate the impact, reduce the bump, thereby improving the driver's working conditions and increasing the average vehicle speed.

[0043] The transmission shaft 25 is coaxial with the main shaft 37. The external steering drive mechanism drives the main shaft 37 and the suspension assembly 30 to rotate as a whole, thereby driving the differential assembly to rotate and realize wheel steering.

[0044] The external drive system drives the transmission shaft 25, thereby driving the input shaft 23, the differential assembly 20, and the dual tire wheel set to move. When the wheels turn, the transmission shaft 25 is not affected by the turning.

[0045] The above shows and describes the basic principle, main features and advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments. The above embodiments and the specification only describe the principles of the utility model. The utility model may be subject to various changes and improvements without departing from the spirit and scope of the utility model. These changes and improvements fall within the scope of the utility model to be protected. The scope of protection claimed by the utility model is defined by the attached claims and their equivalents.

Claims

1. A dual-tire wheel suspension system, comprising a first tire and a second tire arranged side by side, characterized in that: The first tire and the second tire are respectively fixedly arranged on two independent rotating shafts, and the first tire and the second tire are connected together through a differential assembly, and the differential assembly is provided with a transmission shaft for connecting to an external driving system, and the transmission shaft is arranged vertically; The vertically mounted suspension assembly is connected to the outer shell of the differential assembly from directly above the differential assembly. A main shaft for connecting to an external steering drive mechanism is fixedly provided at the upper end of the suspension assembly. The main shaft is a hollow structure, and the transmission shaft passes through the main shaft, and the transmission shaft is coaxial with the main shaft.

2. The dual-tire wheel suspension system according to claim 1, characterized in that: The shell is a high-strength metal shell with strong pressure resistance.

3. The dual-tire wheel suspension system according to claim 1, characterized in that: The transmission shaft is located directly above the rotation axis of the dual tire wheel set.

4. The dual-tire wheel suspension system according to claim 1, characterized in that: The main shaft is connected to a mounting support for connecting the vehicle body through a bearing.

5. The dual-tire wheel suspension system according to claim 1, characterized in that: A rotating pin is arranged on the housing of the differential assembly along the front-rear direction of the wheel, and the suspension assembly is swingably connected to the housing via the rotating pin.

6. The dual-tire wheel suspension system according to claim 5, characterized in that: The shell is provided with a transmission shaft receiving groove, and a vertically arranged transmission shaft passes through the transmission shaft receiving groove. The transmission shaft can swing along the transmission shaft receiving groove, and a soft rubber cover is provided on the transmission shaft receiving groove to prevent dust from entering.

7. The dual-tire wheel suspension system according to claim 5, characterized in that: The suspension assembly includes a lower end support of the suspension, a first hydraulic cylinder, an upper end support of the suspension, and a second hydraulic cylinder; both ends of the lower end support of the suspension are mounted on the rotating pin, the lower ends of the first hydraulic cylinder and the second hydraulic cylinder are connected to the two ends of the lower end support of the suspension, the upper end support of the suspension is connected to the upper ends of the first hydraulic cylinder and the second hydraulic cylinder, and the main shaft is arranged in the middle of the upper end support of the suspension.

8. The dual-tire wheel suspension system according to claim 1, characterized in that: The differential assembly includes a hollow structure shell, the side wall of the shell is formed with a half-shaft mounting hole for mounting the half-shaft, two rotating shafts pass through the half-shaft mounting hole through bearings and extend into the shell, the two rotating shafts are respectively connected with side gears, a star gear is arranged between the two side gears, a bracket is mounted on one of the shafts, the star gear can be connected to the bracket in a self-rotating manner, the star gear is meshed with the two side gears at the same time, a ring gear is fixedly arranged on the bracket, and the ring gear is drivingly connected to the input shaft.

9. The dual-tire wheel suspension system according to claim 8, characterized in that: The transmission shaft is connected to the input shaft via an internal spline.

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