Large-angle steering device with damping function

Abstract

The utility model discloses a large-angle steering device with a damping function. The large-angle steering device comprises a swing mechanism, a damping mechanism, a pressure power generation mechanism, an energy collection mechanism, a driving motor and the like. A hydraulic motor in the slewing mechanism drives a worm and gear to rotate to realize steering of wheels; the damping mechanism is located among the wheel top cover, the motor side plate and the main shaft side plate and plays a damping role. A pressure power generation mechanism is arranged between a spring and a spring baffle of the damping mechanism, mechanical energy generated by spring vibration is converted into electric energy, and then the electric energy is converted and collected through an energy collection mechanism. According to the utility model, the vehicle can realize large-angle steering and movement, the problem that the vehicle is difficult to steer in a narrow space is solved, and the maneuverability and adaptability of the vehicle are improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to vehicle steering technical field, concretely relates to a big angle steering device with damping. BACKGROUND

[0002] With the sustained growth of global automobile ownership and the acceleration of urbanization process, the urban road traffic pressure is increasing. The maneuverability requirement of vehicle in narrow space is higher and higher, especially in the urban road, parking lot, logistics warehouse and other environments, which puts forward higher requirements for the steering performance of vehicle. The traditional vehicle steering mechanism is difficult to meet the operation demand under these complex working conditions.

[0003] At present, the mainstream vehicle steering system mainly adopts mechanical type, hydraulic power steering and electric power steering and other ways. These steering systems usually only provide steering function for the front wheel, and the maximum steering angle is limited, generally between 30° to 35°. Due to the limited steering angle, the minimum turning radius of the vehicle is large, and it is inconvenient to operate when turning around and turning in narrow space, which can easily cause traffic congestion and safety accidents. The publication number CN110626424A discloses a kind of vehicle wheel big angle steering mechanism, this mechanism can realize 360 degrees of in-place large angle steering of vehicle wheel by setting rotary part, realize the transverse movement of vehicle, but the steering angle cannot be accurately controlled, and the road through bumpy road cannot effectively filter shock, influence operating experience. The patent publication number CN103661567A discloses a kind of vehicle big angle steering mechanism, this steering mechanism mainly realizes the large angle steering of vehicle through the reversing action of mutually perpendicular conical gears, simple structure, but the degree of automation is low, cannot realize accurate control, and the vibration noise of gear transmission is large, and the service life is limited. UTILITY MODEL CONTENTS

[0004] In view of the above technical deficiencies, the purpose of the utility model is to provide a kind of big angle steering device with damping, which can realize the large angle steering of front wheel or four wheels without significantly increasing the cost and complexity of vehicle, reduce the minimum turning radius of vehicle, improve driving comfort and safety, meet the demand of modern traffic environment for vehicle maneuverability and safety.

[0005] To solve the above technical problems, the utility model adopts the following technical scheme:

[0006] The utility model provides a kind of big angle steering device with damping, including rotary mechanism, wheel device and pressure power generation mechanism fixed on the vehicle body, the output end of rotary mechanism is connected wheel device control its rotation;The wheel device includes the wheel of driving motor adaptation, the top of the wheel is equipped with wheel top cover, one end of the wheel top cover is inclined downward and is respectively hinged with motor side plate and main shaft side plate at both sides of its end portion, and driving motor is fixed with motor side plate;

[0007] The damping mechanism comprises a damper, spring baffles are fixed on the upper and lower two struts of the damper, springs are connected between the two spring baffles, and the springs are wrapped outside the damper; the motor side plate and the main shaft side plate are arranged on the two sides of the wheel and are hinged to the struts below the damper at an end away from the wheel top cover, and the struts above the damper are hinged to the wheel top cover.

[0008] The pressure power generation mechanism comprises buffer material and piezoelectric material arranged between the contact points of the spring and the spring baffle, the buffer material is in direct contact with the spring, the piezoelectric material is fixed in the groove of the spring baffle, and a shallow groove is left between the piezoelectric material and the spring baffle for deformation of the piezoelectric material.

[0009] Preferably, the rotation mechanism comprises a hydraulic motor, a worm and a worm gear which are adapted to each other, the worm is provided with an encoder at a non-input end, and the worm gear is connected to the wheel top cover so as to drive the wheel top cover to rotate.

[0010] Preferably, the energy collection mechanism comprises a bridge rectifier circuit, a voltage stabilizing control circuit and a super capacitor which are electrically connected in sequence, the piezoelectric material in the pressure power generation mechanism is electrically connected to the energy collection mechanism, and the super capacitor of the energy collection mechanism is electrically connected to the encoder.

[0011] Preferably, the output end of the driving motor is fixed to the wheel through a flange plate, and the other end is fixed to the motor side plate through a bolt.

[0012] Preferably, one end of the main shaft of the wheel is fixed to the wheel through a flange plate, and the other end of the main shaft is rotatably connected to the main shaft side plate through a turning bearing.

[0013] Preferably, the motor side plate and the main shaft side plate are hinged to the struts below the damper through a pin shaft, and the struts above the damper are hinged to the wheel top cover through a pin shaft.

[0014] Preferably, the buffer material is rubber, and the piezoelectric material is piezoelectric ceramic.

[0015] The utility model discloses the beneficial effect lies in:

[0016] (1) the rotation mechanism of the worm gear and the worm can provide high torque, and the rotation angle (0°-360°) of the wheel can be accurately controlled, so that the vehicle can realize smaller turning radius and better maneuverability, the minimum turning radius of the vehicle is greatly reduced, and the vehicle can flexibly turn or move laterally in narrow space (such as urban road, parking lot and logistics warehouse), so that traffic congestion and safety hazards can be avoided.

[0017] (2) The damping mechanism effectively utilizes the space behind the wheel, and through the combination of the spring and the shock absorber, in combination with the connection structure of the wheel top cover, the motor side plate and the main shaft side plate, the vibration of the bumpy road can be effectively filtered.

[0018] (3) The pressure power generation mechanism (buffer material + piezoelectric material) is introduced, the mechanical vibration of the spring in the damping process is converted into electric energy, and the electric energy is stored as direct current through the energy collection mechanism, and the energy collection mechanism can supply power to the encoder or other low-power consumption devices, reduce the vehicle power burden, and realize energy recycling. BRIEF DESCRIPTION OF DRAWINGS

[0019] In order to more clearly illustrate the technical scheme in the embodiments of the present application or the prior art, the drawings needed in the embodiment or prior art description will be briefly introduced below. Obviously, the drawings in the following description are only some embodiments of the present application, and for those skilled in the art, other drawings can also be obtained without creative labor on the basis of these drawings.

[0020] Figure 1 A structure diagram of a large-angle steering device with damping provided by the embodiment of the present application is shown in the figure.

[0021] Figure 2 A connection diagram of the main shaft side plate and the wheel top cover provided by the embodiment of the present application is shown in the figure.

[0022] Figure 3 A schematic diagram of the rotary mechanism provided by the embodiment of the present application is shown in the figure.

[0023] Figure 4 A schematic diagram of the damping mechanism provided by the embodiment of the present application is shown in the figure.

[0024] Figure 5 A schematic diagram of the pressure power generation mechanism provided by the embodiment of the present application is shown in the figure.

[0025] Figure 6 An energy collection flowchart of the energy collection mechanism provided by the embodiment of the present application is shown in the figure.

[0026] BRIEF DESCRIPTION OF DRAWINGS

[0027] 1. Rotary mechanism; 1-1. Hydraulic motor; 1-2. Worm gear; 1-3. Worm wheel; 1-4. Encoder; 2. Shock absorption mechanism; 2-1. Support column; 2-2. Spring baffle; 2-3. Shock absorber; 2-4. Spring; 3. Drive motor; 4. Energy harvesting mechanism; 4-1. Bridge rectifier circuit; 4-2. Voltage stabilizing control circuit; 4-3. Supercapacitor; 5. Wheel; 6. Motor side plate; 7. Wheel top cover; 8. Main shaft side plate; 9. Main shaft; 10. Pressure power generation mechanism; 10-1. Buffer material; 10-2. Piezoelectric material; 10-3. Shallow groove. Detailed Implementation

[0028] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0029] like Figures 1 to 6 As shown, a large-angle steering device with shock absorption includes a slewing mechanism 1 fixed to the vehicle body, a wheel assembly, and a pressure power generation mechanism 10. The output end of the slewing mechanism 1 is connected to the wheel assembly to control its rotation. The wheel assembly includes a wheel 5 adapted to a drive motor 3. A wheel top cover 7 is provided above the wheel 5. One end of the wheel top cover 7 is inclined downward and a motor side plate 6 and a main shaft side plate 8 are respectively hinged to both sides of its end. The drive motor 3 is fixed to the motor side plate 6.

[0030] The shock absorption mechanism 2 includes a shock absorber 2-3. Spring baffles 2-2 are fixed on the upper and lower supports 2-1 of the shock absorber 2-3. A spring 2-4 is connected between the two spring baffles 2-2 and the spring 2-4 surrounds the outside of the shock absorber 2-3. The motor side plate 6 and the main shaft side plate 8 are arranged on both sides of the wheel 5 and are hinged to the support 2-1 below the shock absorber 2-3 at the end away from the wheel top cover 7. The support 2-1 above the shock absorber 2-3 is hinged to the wheel top cover 7.

[0031] The pressure power generation mechanism includes a buffer material 10-1 and a piezoelectric material 10-2 arranged between the contact points of the spring 2-4 and the spring baffle 2-2. The buffer material 10-1 is in direct contact with the spring 2-4, and the piezoelectric material 10-2 is fixed in a groove opened in the spring baffle 2-2. A shallow groove 10-3 is left between the piezoelectric material 10-2 and the spring baffle 2-2 to allow for its deformation.

[0032] The rotary mechanism 1 comprises a hydraulic motor 1-1, a worm 1-2 and a worm gear 1-3 which are matched with each other, the hydraulic motor 1-1 is installed at the input end of the worm 1-2, an encoder 1-4 is installed at the non-input end of the worm 1-2, the worm gear 1-3 is driven by the worm 1-2, and the worm gear 1-3 is connected to the wheel top cover 7 by bolts to drive the wheel top cover 7 to rotate.

[0033] The steering device further comprises an energy collection mechanism, the energy collection mechanism comprises a bridge rectifier circuit 4-1, a voltage stabilizing control circuit 4-2 and a super capacitor 4-3 which are electrically connected in sequence, the piezoelectric material 10-2 in the pressure power generation mechanism is electrically connected to the energy collection mechanism, and the super capacitor 4-3 of the energy collection mechanism is electrically connected to the encoder 1-4.

[0034] The output end of the driving motor 3 is fixed to the wheel 5 through a flange and bolts, and the other end is fixed to the motor side plate 6 through bolts.

[0035] One end of the main shaft 9 of the wheel 5 is fixed to the wheel 5 through a flange and bolts, and the other end of the main shaft 9 is connected to the main shaft side plate 8 through a rotary bearing.

[0036] The working principle is that the hydraulic motor 1-1 in the rotary mechanism 1 drives the worm 1-2 to rotate, the worm 1-2 drives the worm gear 1-3 to rotate, the worm gear 1-3 drives the wheel top cover 7 and the entire wheel 5 to rotate, and the large-angle steering of the vehicle is realized; the encoder 1-4 records the rotation angle of the worm 1-2, calculates the rotation angle of the worm gear 1-3, and thus the steering angle of the wheel 5 is mastered in real time.

[0037] The driving motor 3 drives the entire wheel 5 to rotate, and the driving of the wheel is realized.

[0038] When passing through a bumpy road section, the vibration is transmitted to the motor side plate 6 and the main shaft side plate 8 through the wheel 5 and finally to the strut 2-1 of the shock absorber 2-3, and through the damping filtering of the spring 2-4 and the shock absorber 2-3, the vibration transmitted to the wheel top cover 7 and the rotary mechanism 1 can be effectively reduced, thereby reducing the influence of the vibration on the frame and realizing the overall damping of the vehicle.

[0039] In addition, the damping mechanism 2 can also serve as a support between the motor side plate 6, the main shaft side plate 8 and the wheel top cover 7; when the damping mechanism 2 filters the vibration, the spring 2-4 vibrates up and down along the axial direction, extruding the buffer material 10-1 and the piezoelectric material 10-2, the piezoelectric material 10-2 deforms to generate current, the energy collection mechanism 4 collects the alternating current generated by the piezoelectric material 10-2, and then passes through the bridge rectifier circuit 4-1 and the voltage stabilizing control circuit 4-2, and finally stores in the super capacitor 4-3, which is used to supply power to the encoder 1-4. The bridge rectifier circuit 4-1 and the voltage stabilizing control circuit 4-2 are both existing circuits.

[0040] Obviously, those skilled in the art can make various modifications and variations to the present application without departing from the spirit and scope of the present application. Thus, if these modifications and variations of the present application fall within the scope of the claims of the present application and their equivalents, the present application also intends to include these modifications and variations.

Claims

1. A large angle steering device with shock absorption, characterized by, The application relates to a vehicle body, which comprises a rotating mechanism (1) fixed on the vehicle body, a wheel device, a damping mechanism (2) and a pressure power generation mechanism, the output end of the rotating mechanism (1) is connected with the wheel device to control the rotation of the wheel device; the wheel device comprises a wheel (5) matched with a driving motor (3), the upper portion of the wheel (5) is provided with a wheel top cover (7), one end of the wheel top cover (7) is inclined downward, and a motor side plate (6) and a main shaft side plate (8) are respectively hinged at the two sides of the end of the wheel top cover (7), and the driving motor (3) is fixed with the motor side plate (6); the damping mechanism (2) comprises a shock absorber (2-3), spring baffles (2-2) are fixed on the upper and lower two struts (2-1) of the shock absorber (2-3), springs (2-4) are connected between the two spring baffles (2-2), and the springs (2-4) are arranged around the outer side of the shock absorber (2-3); the motor side plate (6) and the main shaft side plate (8) are arranged at the two sides of the wheel (5) and are hinged with the struts (2-1) below the shock absorber (2-3) at the end away from the wheel top cover (7), and the struts (2-1) above the shock absorber (2-3) are hinged with the wheel top cover (7); the pressure power generation mechanism comprises buffer material (10-1) and piezoelectric material (10-2) arranged between the contact points of the spring (2-4) and the spring baffle (2-2), the buffer material (10-1) is in direct contact with the spring (2-4), the piezoelectric material (10-2) is fixed in a groove of the spring baffle (2-2), and a shallow groove (10-3) is left between the piezoelectric material (10-2) and the spring baffle (2-2) for deformation of the piezoelectric material (10-2).

2. A large angle steering apparatus with damping as claimed in claim 1, characterized in that The rotating mechanism (1) comprises a hydraulic motor (1-1), a worm (1-2) and a worm wheel (1-3) matched with each other, the non-input end of the worm (1-2) is provided with an encoder (1-4), and the worm wheel (1-3) is connected with the wheel top cover (7) so as to drive the wheel top cover (7) to rotate.

3. A large angle steering apparatus with damping as defined in claim 1, wherein The energy collection mechanism comprises a bridge rectifier circuit (4-1), a voltage stabilizing control circuit (4-2) and a super capacitor (4-3) connected in sequence, the piezoelectric material (10-2) in the pressure power generation mechanism is electrically connected with the energy collection mechanism, and the super capacitor (4-3) of the energy collection mechanism is electrically connected with the encoder (1-4).

4. A large angle steering apparatus with damping as defined in claim 1, wherein The output end of the driving motor (3) is fixed with the wheel (5) through a flange plate, and the other end is fixed with the motor side plate (6) through a bolt.

5. A large angle steering apparatus with damping as defined in claim 1, wherein One end of the main shaft (9) of the wheel (5) is fixed with the wheel (5) through a flange plate, and the other end of the main shaft (9) is rotatably connected with the main shaft side plate (8) through a revolving bearing.

6. A large angle steering apparatus with damping as defined in claim 1, wherein The motor side plate (6) and the main shaft side plate (8) are hinged with the struts (2-1) below the shock absorber (2-3) through a pin shaft, and the struts (2-1) above the shock absorber (2-3) are hinged with the wheel top cover (7) through a pin shaft.

7. A large angle steering apparatus with damping as defined in claim 1, wherein The buffer material is rubber, and the piezoelectric material (10-2) is piezoelectric ceramic.

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