Vehicle auxiliary wheel device, using method and automobile

Abstract

The invention discloses a vehicle auxiliary wheel device, a using method and an automobile, the vehicle auxiliary wheel device comprises auxiliary wheels, a main support and a retractable frame, the auxiliary wheels are arranged at the bottom of the main support, the retractable frame is connected with the main support, and the retractable frame is used for enabling the main support to rotate. According to the vehicle auxiliary wheel device, the using method and the automobile, folding and unfolding of the auxiliary wheel can be achieved through the folding and unfolding frame, and when the ground friction coefficient is not changed, the braking force of a brake is increased by increasing the contact area between the automobile and the ground, and the braking distance is shortened.

Description

Technical Field

[0001] The invention belongs to the technical field of automobiles, and in particular relates to a vehicle auxiliary wheel device, a use method and an automobile. Background Art

[0002] At present, the braking method adopted by most cars relies on the friction principle between the tires and the ground and the coordinated work of the chassis braking system. Specifically, when the driver implements the braking operation, that is, steps on the brake pedal, this action triggers the chassis braking system. The system transmits the braking force to each wheel through a series of complex mechanical and hydraulic transmissions. At this time, the tire, as a component in direct contact with the ground, forms a certain friction coefficient with the ground by virtue of its specific rubber material and design pattern, thereby generating friction. This friction force becomes the key force for the vehicle to slow down and stop. During the driving process of the vehicle, the four tires evenly share the weight of the vehicle and maintain stable contact with the ground. Under the precise control of the chassis braking system, the vehicle can be braked smoothly and effectively.

[0003] However, the road environment is ever-changing, and many complex situations may cause at least one of the four tires to momentarily lose contact with the ground. For example, when a large pothole suddenly appears on the road while driving at high speed, the vehicle will cause a tire to be suspended in the air for a short time due to the bumps; or when turning at a high speed on a slippery road, the vehicle will skid, causing one tire to leave the ground. Once a tire leaves the ground, the friction between the tire and the ground disappears immediately, and the vehicle's original balanced state of even braking based on the four tires is broken. The chassis braking system cannot properly perform the braking function for the tire that has left the ground, resulting in uneven distribution of the vehicle's overall braking force. This unbalanced braking force acting on the vehicle will make it difficult to control the direction of the vehicle, and it is easy to cause dangerous conditions such as rollover and tail swinging, which is very likely to cause serious traffic accidents in the end, posing a huge threat to the life safety and property of the driver and passengers. Summary of the invention

[0004] The purpose of the present invention is to provide a vehicle auxiliary wheel device, a use method and a vehicle, so as to solve the problem of unbalanced vehicle braking in the prior art.

[0005] To this end, the first aspect of the present invention provides a vehicle auxiliary wheel device, including an auxiliary wheel, a main bracket and a retractable frame, wherein the auxiliary wheel is arranged at the bottom of the main bracket, the retractable frame is connected to the main bracket, and the retractable frame is used to rotate the main bracket.

[0006] Preferably, the retractable rack includes a lower resistance rod, an upper resistance rod, a bracket retractable cylinder, a rear locking rod, a front locking rod and a lock actuator cylinder, one end of the lower resistance rod is rotatably connected to the bottom of the main bracket, and the other end is rotatably connected to the upper resistance rod and the front locking rod, one end of the rear locking rod is rotatably connected to the lock actuator cylinder, and the other end is rotatably connected to the front locking rod, and the bracket retractable cylinder is rotatably connected to the upper end of the main bracket.

[0007] Preferably, a caliper is provided on the auxiliary wheel.

[0008] Preferably, it also includes a storage bin, the storage bin is provided with a bin door, and the storage rack is inside the storage bin.

[0009] In a second aspect, a car is provided, comprising the vehicle auxiliary wheel device and a control system, wherein the vehicle auxiliary wheel device is arranged in the chassis of the car, and the control system is used to control the retraction and extension of the vehicle auxiliary wheel device.

[0010] Preferably, the control system includes a hydraulic system, an electronic system and a controller, and the controller is electrically connected to the hydraulic system and the electronic system.

[0011] In a third aspect, a method for using a vehicle auxiliary wheel device is provided, which is applied to a vehicle described above and comprises the following steps: a control system detects the braking force of the vehicle; if the braking force of the vehicle is insufficient, the control system causes the retractable frame to open and the auxiliary wheels to contact the ground, thereby increasing the contact area with the ground through the auxiliary wheels and improving the braking force of the vehicle.

[0012] In a fourth aspect, another method for using a vehicle auxiliary wheel device is provided, which is applied to a car as described above and includes the following steps: a control system detects the tire pressure of the car, and when the tire pressure of one tire of the car drops sharply, the control system causes the retractable frame to open, the auxiliary wheel contacts the ground, and the auxiliary wheel is used to maintain the smooth driving of the car.

[0013] In a fifth aspect, another method for using a vehicle auxiliary wheel device is provided, which is applied to a car as described above and includes the following steps: a control system detects the wheel speed of the car, and when the rotation speed of two wheels of the car is abnormal, the control system causes the retractable frame to open, the auxiliary wheels to contact the ground, and the balance of the car is maintained by the auxiliary wheels.

[0014] In a sixth aspect, another method for using a vehicle auxiliary wheel device is provided, which is applied to a car as described above and includes the following steps: when the car is stationary, the control system causes the retractable rack to open, the auxiliary wheels to contact the ground, and the supporting force of the retractable rack to increase so that the car is lifted up.

[0015] Beneficial effects:

[0016] 1. The present invention provides a vehicle auxiliary wheel device, a method of use and a vehicle. The auxiliary wheels can be retracted and extended through a retractable frame. When the ground friction coefficient remains unchanged, the contact area between the vehicle and the ground is increased, the braking force is increased, and the braking distance is shortened.

[0017] 2. The vehicle auxiliary wheel device of the present invention can keep the vehicle body stable, assist the driver in increasing the ability to drive, turn and support the vehicle, and facilitate the vehicle to maintain stability in special situations such as tire blowout and wheel off the ground. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0019] Figure 1 The figure is a cross-sectional view of a vehicle auxiliary wheel device according to the present invention.

[0020] Figure 2 The figure is a schematic structural diagram of a vehicle auxiliary wheel device in the present invention.

[0021] Figure 3 The figure is a schematic diagram of the structure of a car in the present invention.

[0022] In the figure, 1-lower resistance rod, 2-upper resistance rod, 3-auxiliary wheel, 4-bracket retracting cylinder, 5-rear locking link, 6-front locking link, 7-locking actuator cylinder, 8-main bracket, 9-caliper, 10-storage bin, 11-bin door, 12-car chassis. DETAILED DESCRIPTION

[0023] The content of the present invention can be more easily understood by selecting the following detailed description of the preferred implementation method of the present invention and the embodiments included. Unless otherwise specified, all technical and scientific terms used herein have the same meanings as those of ordinary skill in the art to which the present invention belongs. When there is a conflict, the definition in this specification shall prevail.

[0024] Embodiment 1:

[0025] like Figure 1-2 As shown, the first aspect of this embodiment provides a vehicle auxiliary wheel device, including an auxiliary wheel 3, a main bracket 8 and a retractable frame, the auxiliary wheel 3 is arranged at the bottom of the main bracket 8, the retractable frame is connected to the main bracket 8, and the retractable frame is used to rotate the main bracket 8.

[0026] The vehicle further comprises a storage bin 10, which is provided with a bin door 11, and the storage rack is in the storage bin 10. The storage bin 10 is used to store the storage rack, the main bracket 8 and the auxiliary wheel 3. The storage bin 10 is hollow and retractable or concave, and the storage rack and the auxiliary wheel 3 can be installed. The storage bin 10 is located on the vehicle chassis 12, so that the auxiliary wheel 3 can contact the ground.

[0027] The storage rack includes a lower resistance rod 1, an upper resistance rod 2, a bracket storage cylinder 4, a rear locking rod 5, a front locking rod 6 and a lock actuator 7. One end of the lower resistance rod 1 is rotatably connected to the bottom of the main bracket 8, and the other end is rotatably connected to the upper resistance rod 2 and the front locking rod 6. One end of the rear locking rod 5 is rotatably connected to the lock actuator 7, and the other end is rotatably connected to the front locking rod 6. The bracket storage cylinder 4 is rotatably connected to the upper end of the main bracket 8. One end of the lock actuator 7 is arranged on the side wall of the storage bin 10, one end of the bracket storage cylinder 4 is arranged on the top of the storage bin 10, and one end of the upper resistance rod 2 is arranged on the top of the storage bin 10. When the storage rack needs to be opened, the lock actuator 7 drives the rear locking link and the front locking link to move, and the front locking link drives the lower resistance rod 1 and the resistance rod to fold. The bracket storage cylinder 4 cooperates with the upper resistance rod 2 and the lower resistance rod 1 to keep the main bracket 8 horizontal, and the auxiliary wheel 3 is stored in the storage bin 10.

[0028] A caliper 9 is provided on the auxiliary wheel 3. The caliper 9 is used to provide a braking force to the auxiliary wheel 3 to ensure the braking effect of the auxiliary wheel 3.

[0029] Optionally, a shock absorbing device is also provided on the auxiliary wheel 3 to ensure the shock absorbing effect when the tire touches the ground.

[0030] Second, as Figure 3 As shown, a car is provided, comprising the vehicle auxiliary wheel device and the control system, wherein the vehicle auxiliary wheel device is arranged in the vehicle chassis 12, and the control system is used to control the retraction and extension of the vehicle auxiliary wheel device.

[0031] The control system includes a hydraulic system, an electronic system and a controller, and the controller is electrically connected to the hydraulic system and the electronic system. The hydraulic system is used to provide hydraulic pressure for the retractable rack to support the main bracket 8, and the electronic system is used to transmit control signals between the controller and the hydraulic system. In this embodiment, the controller can be an ECU. The controller transmits control signals to the hydraulic system through the electronic system, and the hydraulic system realizes the retracting and extending of the retractable rack through hydraulic pressure.

[0032] The auxiliary wheel 3 can rotate 360 ​​degrees, and the rotation angle of the auxiliary wheel 3 is controlled by the control system. When the car turns, the rotation angle can be adjusted to shorten the turning radius.

[0033] In a third aspect, a method for using a vehicle auxiliary wheel device is provided, which is applied to a vehicle, and includes the following steps: a control system detects the braking force of the vehicle, and if the braking force of the vehicle is insufficient, the control system opens the retractable frame, the auxiliary wheel 3 contacts the ground, and the contact area with the ground is increased by the auxiliary wheel 3, thereby improving the braking force of the vehicle. The control system can calculate the current braking force on the vehicle according to the wheel speed sensor, the wheel acceleration sensor, and the pressure sensor, and automatically starts the retractable frame when the braking force of the vehicle is insufficient, and the hydraulic clamp clamps the auxiliary wheel 3 to reduce the rotation speed of the auxiliary wheel 3, thereby increasing the contact area between the vehicle and the ground and improving the braking force of the vehicle.

[0034] In a fourth aspect, another method for using a vehicle auxiliary wheel device is provided, which is applied to a vehicle described above, and includes the following steps: a control system detects the tire pressure of the vehicle, and when the tire pressure of a tire of the vehicle drops sharply, the control system causes the retractable frame to open, and the auxiliary wheel 3 contacts the ground, and the vehicle is kept running smoothly by the auxiliary wheel 3. When a tire of the vehicle bursts, the tire pressure will drop sharply, and it will cause the vehicle to slip and deviate, making the driving unstable. By detecting the tire pressure, it is determined whether the tire is burst, and the auxiliary wheel 3 is opened in time when it bursts, so that the vehicle can remain stable.

[0035] In a fifth aspect, another method for using a vehicle auxiliary wheel device is provided, which is applied to a vehicle as described above, and comprises the following steps: a control system detects the wheel speed of the vehicle, and when the rotation speed of two wheels of the vehicle is abnormal, the control system opens the retractable frame, and the auxiliary wheels 3 contact the ground, and the vehicle is balanced by the auxiliary wheels 3. When two wheels may be suspended in the air on a mountain road or in a narrow situation, causing danger, the retraction and extension of the auxiliary wheels 3 can ensure three-point support so that the vehicle will not fall.

[0036] In a sixth aspect, another method for using a vehicle auxiliary wheel device is provided, which is applied to a vehicle as described above, and comprises the following steps: when the vehicle is stationary, the control system opens the retractable rack, the auxiliary wheel 3 contacts the ground, and increases the supporting force of the retractable rack to lift the vehicle. After the auxiliary wheel 3 is clamped by the hydraulic clamp, the retractable rack further increases the extension height of the auxiliary wheel 3, and can be used as a jack. This function must be used when the vehicle is stationary.

[0037] The embodiments described above are only used to illustrate the technical solutions of the present invention, rather than to limit the same. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that the technical solutions described in the aforementioned embodiments may still be modified, or some of the technical features may be replaced by equivalents. Such modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present invention, and should all be included in the protection scope of the present invention.

Claims

1. A vehicle auxiliary wheel device, characterized in that: The utility model comprises an auxiliary wheel, a main support and a retractable frame, wherein the auxiliary wheel is arranged at the bottom of the main support, the retractable frame is connected to the main support, and the retractable frame is used to rotate the main support.

2. A vehicle auxiliary wheel device according to claim 1, characterized in that: The retractable frame includes a lower resistance rod, an upper resistance rod, a bracket retractable cylinder, a rear locking rod, a front locking rod and a lock actuator cylinder. One end of the lower resistance rod is rotatably connected to the bottom of the main bracket, and the other end is rotatably connected to the upper resistance rod and the front locking rod. One end of the rear locking rod is rotatably connected to the lock actuator cylinder, and the other end is rotatably connected to the front locking rod. The bracket retractable cylinder is rotatably connected to the upper end of the main bracket.

3. The vehicle auxiliary wheel device according to claim 1, characterized in that: The auxiliary wheel is provided with a caliper.

4. The vehicle auxiliary wheel device according to claim 1, characterized in that: It also includes a storage bin, which is provided with a bin door, and the storage rack is inside the storage bin.

5. A car, characterized in that: It comprises a vehicle auxiliary wheel device and a control system as described in any one of claims 1 to 4, wherein the vehicle auxiliary wheel device is arranged in the automobile chassis, and the control system is used to control the retraction and extension of the vehicle auxiliary wheel device.

6. A vehicle according to claim 5, characterized in that: The control system includes a hydraulic system, an electronic system and a controller, and the controller is electrically connected to the hydraulic system and the electronic system.

7. A method for using a vehicle auxiliary wheel device, characterized in that: A car applied to any one of claims 5-6, comprising the following steps: a control system detects the braking force of the car, and if the braking force of the car is insufficient, the control system causes the retractable rack to open, the auxiliary wheels to contact the ground, and the auxiliary wheels to increase the contact area with the ground, thereby improving the braking force of the car.

8. A method for using a vehicle auxiliary wheel device, characterized in that: A car applied to any one of claims 5-6, comprising the following steps: a control system detects the tire pressure of the car, and when the tire pressure of one tire of the car drops sharply, the control system causes the retractable frame to open, the auxiliary wheels to contact the ground, and the auxiliary wheels to keep the car running smoothly.

9. A method for using a vehicle auxiliary wheel device, characterized in that: A car applied to any one of claims 5-6 comprises the following steps: a control system detects the wheel speed of the car, and when the rotation speed of two wheels of the car is abnormal, the control system causes the retractable rack to open, the auxiliary wheels to contact the ground, and the balance of the car is maintained by the auxiliary wheels.

10. A method for using a vehicle auxiliary wheel device, characterized in that: A car applied to any one of claims 5-6 comprises the following steps: when the car is stationary, the control system causes the stowage rack to open, the auxiliary wheels to contact the ground, and the supporting force of the stowage rack to increase, so that the car is lifted up.

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