CN220764493U - Steering mechanism for skateboard chassis - Google Patents

Abstract

The utility model discloses a steering mechanism for a skateboard chassis, which comprises a steering part and a conductive part, wherein a slewing bearing of the steering part is of a worm wheel and worm structure; the conductive part is a conductive double-rotation instrument, the conductive double-rotation instrument is arranged on the slewing bearing, and the conductive double-rotation instrument comprises a conductive double-rotation instrument base, a conductive double-rotation instrument upper cover, a contact and a wiring terminal; the conductive double-rotation instrument base is fixed at the bottom of the slewing bearing, a plurality of circles of guide rails and wire passing holes are arranged above the conductive double-rotation instrument base, wiring terminals are arranged at the bottom ends of the holes, one ends of the wiring terminals are connected with the conductive double-rotation instrument base, and the other ends of the wiring terminals are electrically connected with wiring harnesses in the front fork. The mechanism can realize steering driving, and the self-locking of the steering mechanism is realized by the worm wheel and worm structure arranged on the mechanism; the conductive double-rotation instrument of the conductive part is provided with the contact and the wiring terminal, so that the steering part is used as a mounting base of the conductive part, the conductive part does not influence steering, the steering angle is not limited, and the large-angle steering can be realized.

Description

Steering mechanism for skateboard chassis

Technical Field

The utility model relates to a skateboard chassis, in particular to a steering mechanism for the skateboard chassis.

Background

The current trend in the global urban transportation is strong, and the demand for new urban vehicles is increased. Whether public or personal, manned or object-carrying, artificial or intelligent, new vehicles are required to achieve the desired goals. The advent of the omni-directional all-terrain steer-by-wire chassis provides excellent maneuverability and versatility of the vehicle over a wide variety of terrain and environmental conditions. The background of this technology relates to research and development in the fields of mobile robots, unmanned robots, robotic chassis, and the like.

Over the past few decades, mobile robotics have made significant progress, being widely used in industry, military, detection and service fields. However, conventional vehicle chassis have limited maneuverability and handling in complex terrain and cramped environments. To address this problem, researchers have begun to explore new chassis technologies to improve vehicle mobility and adaptability.

The omni-wheel technology is an important factor in the generation of an omni-directional all-terrain drive-by-wire chassis. The omni-wheel design enables the vehicle to move and rotate in any direction, and has excellent maneuvering performance. To achieve this omni-directional motion, researchers have used designs of independent drive and steering. Each wheel is equipped with its own electric drive and steering device, which can be operated independently, thus allowing free movement of the vehicle in complex terrain.

In addition, the omnidirectional all-terrain drive-by-wire chassis also relates to applications of the sensor and the navigation system. With the continuous development of sensor technology, such as lidar, cameras, inertial measurement units, etc., vehicles are capable of sensing the topography, obstacles and navigation information of the surrounding environment. By processing these sensor data, the navigation system calculates the position, attitude and motion plan of the vehicle, providing accurate navigation and control for the vehicle.

In terms of automation and intelligent control, an omnidirectional all-terrain drive-by-wire chassis adopts advanced algorithms and technologies. The algorithms enable real-time processing and analysis of sensor data, enabling the vehicle to make quick and accurate decisions and responses. The chassis may autonomously adjust drive and steering commands to achieve efficient movement and operation, depending on the particular movement task and environmental conditions.

The background of the omni-directional all-terrain drive-by-wire chassis has motivated thousands of research and innovation efforts. Various universities, research institutions and enterprises invest in a large amount of resources, and development work of chassis, sensors, navigation and control systems is performed. Through continuous experiments and improvements, the omnidirectional all-terrain drive-by-wire chassis becomes reality gradually, and wide application is sought in the fields of industry, logistics, rescue, detection and the like.

Summarizing, the background of the generation of omni-directional all-terrain steer-by-wire chassis relates to the limitations of traditional chassis mobility and the need for new chassis technologies. The development and integration of key technologies such as omni-directional wheel technology, independent driving and steering, sensor and navigation systems, automation and intelligent control, and the like have driven the emergence of omni-directional all-terrain drive-by-wire chassis. The application potential of the technology is huge, and new opportunities and challenges are brought to mobile robots and vehicles in various fields.

For example, in prior art 1, a wheel set of CN202321083592 transports AGV, the drive wheel mechanism gear does not seal, can not prevent the entering of debris such as dust, easily influence transmission efficiency, and the center of rotation is in tire center top, has improved the height of drive wheel relatively, and has certain restriction to the whole jump quantity of tire, in addition, this mechanism can not carry out the auto-lock, the guiding axle is located circumference compression spring top, the direction is not separated with the shock attenuation for AGV vehicle steering's precision and flexibility reduce, this AGV is the candle formula bumper shock absorber in addition, can only bear z axle direction impact, be unfavorable for AGV to keep balance on uneven road surface.

Such as the torsion beam axle suspension assembly of prior art 2, CN 201811543625. The problems that exist are: the torsion beam is connected with the hub axle support, and the hub axle support is directly connected with the hub, so that the torsion beam is a rigid member, the steering angle of the tire is limited to a certain extent, and large-angle steering cannot be realized.

Disclosure of Invention

The utility model aims to solve the technical problem of providing a steering mechanism for a skateboard chassis, which can realize steering driving and realize self-locking of the steering mechanism by a worm wheel and worm structure arranged on the steering mechanism; the conductive double-rotation instrument of the conductive part is provided with the contact and the wiring terminal, so that the steering part is used as a mounting base of the conductive part, the conductive part does not influence steering, the steering angle is not limited, and the large-angle steering can be realized.

In order to solve the technical problems, the utility model adopts the following technical means:

the steering mechanism for the skateboard chassis comprises a steering part and a conductive part, wherein the steering part is provided with a rotary support bearing which is fixed on a torsion steel beam and a front fork, and a servo motor is arranged at the inner side of the steering part to drive the rotary support bearing; the slewing bearing is of a worm wheel and worm structure;

the conductive part is a conductive double-rotation instrument, the conductive double-rotation instrument is arranged at the middle gap of the rotary support bearing and comprises a conductive double-rotation instrument base, a conductive double-rotation instrument upper cover, a contact and a wiring terminal; the conductive double-rotation instrument base is fixed at the bottom of the slewing bearing, a plurality of circles of guide rails are arranged above the conductive double-rotation instrument base, a plurality of wire passing holes are drilled in the middle of the guide rails, connecting terminals are arranged at the bottom ends of the holes, one ends of the connecting terminals are connected with the conductive double-rotation instrument base, the other ends of the connecting terminals are matched with the front fork, the front fork adopts a hollow structure, wiring harnesses pass through the hollow structure and are connected with conductive copper sheets at the guide rails through the connecting terminals, and the conductive double-rotation instrument base rotates along with the rotation of wheels; the conductive double-rotation instrument upper cover is fixed above the slewing bearing, holes of a plurality of groups of contacts are arranged at the bottom of the conductive double-rotation instrument upper cover, wire holes are punched at the holes of the conductive double-rotation instrument upper cover to correspond to the holes one by one, and the conductive double-rotation instrument upper cover rotates along with the slewing bearing; when the conductive double-rotation instrument is used for arranging wire harnesses, the lower guide rail corresponds to the contacts above the conductive double-rotation instrument one by one, and the conductive copper sheet is arranged at the guide rail to complete the conduction of current.

Compared with the prior art, the utility model adopting the technical scheme has the outstanding characteristics that:

the worm wheel and worm structure is small in size, can obtain a larger reduction ratio, can play a self-locking role at the same time, and ensures the stability of the vehicle in the running process. The rotary support bearing not only can lead the wheels to steer omnidirectionally, but also has the function of effectively reducing vibration and noise. The servo motor provides power for the slewing bearing and can accurately control the steering angle of the vehicle.

When the wheel turns 360 degrees, the wheel drives the lower end of the rotary support bearing to rotate and drives the conductive double-rotation meter base to rotate, the rotary support bearing drives the conductive double-rotation meter upper cover to rotate, the two rotate respectively and are not interfered with each other, and the contact slides on the guide rail to enable current to be transmitted, so that the wire harnesses cannot be intertwined together.

A further preferred technical scheme is as follows:

the conductive copper sheet is attached to the guide rail.

The conductive copper sheet is attached to the surface of the guide rail, so that the contact has good contact with the conductive copper sheet on the surface of the guide rail, and the conductive effect is ensured.

The contact is made of graphite material, a spring is arranged at one end of the contact, which is connected with the upper cover of the conductive double-rotation instrument, the end part of the contact is connected with the upper cover of the conductive double-rotation instrument through the spring, and the spring enables the contact to be in close contact with the guide rail.

By the arrangement, the stability of conduction between the components is further improved.

Drawings

FIG. 1 is a schematic diagram of the overall structure of the present utility model.

Fig. 2 is a schematic view of the overall suspension structure of the present utility model.

FIG. 3 is a schematic view of a single suspension mechanism according to the present utility model.

Fig. 4 is a schematic view of an exploded structure of the steering mechanism of the present utility model.

Fig. 5 is a top view and a cross-sectional view of a conductive bispin meter base of the present utility model.

Fig. 6 is a schematic view of the explosion (tire removal) structure of the driving mechanism and the braking mechanism of the present utility model.

Fig. 7 is a cross-sectional view of the planetary reducer of the present utility model.

FIG. 8 is a schematic view of the frame mechanism of the present utility model.

Fig. 9 is a schematic diagram of the structure of the upper cover of the conductive dual-rotation meter.

Fig. 10 is a perspective view of the steering mechanism of the present utility model.

Fig. 11 is a perspective view of a steering mechanism according to the present utility model.

Reference numerals illustrate:

suspension mechanism 1: damping springs 101, torsion steel beams 103, trailing arms 104 and guide pull rods 102;

steering mechanism 2: sealing clasp 2011, worm wheel 2012, worm 2013, slewing bearing, end cap 2015, servo motor 2016; a conductive bispin meter base 2021, a conductive bispin meter upper cover 2022, contacts 2023 and a wiring terminal 2024;

driving mechanism 3: planetary reducer 301, permanent magnet synchronous motor 302, hub bearing 303;

braking mechanism 4: from brake caliper 401, brake disc 402;

and a frame 5.

Detailed Description

The utility model will be further illustrated with reference to the following examples.

Referring to fig. 4, 5, 9, 10 and 11, the steering mechanism for the skateboard chassis of the present utility model comprises a steering part and a conductive part

The steering part is provided with a slewing bearing which is fixed on the torsion steel beam 103 and the front fork, and a servo motor 2016 is arranged on the inner side of the steering part to drive the slewing bearing; the slewing bearing is in a worm wheel 2012 and worm 2013 structure;

the conductive part is a conductive double-rotation instrument, the conductive double-rotation instrument is arranged at the middle gap of the slewing bearing, and comprises a conductive double-rotation instrument base 2021, a conductive double-rotation instrument upper cover 2022, a contact 2023 and a wiring terminal 2024; the conductive double-rotation meter base 2021 is fixed at the bottom of the slewing bearing, a plurality of circles of guide rails are arranged above the conductive double-rotation meter base 2021, a plurality of wire passing holes are drilled in the middle of the guide rails, a connecting terminal 2024 is arranged at the bottom end of each hole, one end of each connecting terminal 2024 is connected with the conductive double-rotation meter base 2021, the other end of each connecting terminal 2024 is matched with a front fork, the front fork adopts a hollow structure, a wire harness passes through the hollow structure and is connected with a conductive copper sheet at the guide rails through the connecting terminal 2024, and the conductive double-rotation meter base 2021 rotates along with the rotation of wheels; the conductive double-rotation meter upper cover 2022 is fixed above the slewing bearing, holes of a plurality of groups of contacts 2023 are arranged at the bottom of the conductive double-rotation meter upper cover 2022, and wire holes are punched at the holes of the conductive double-rotation meter upper cover 2022 to correspond to the holes one by one, and the conductive double-rotation meter upper cover 2022 rotates along with the slewing bearing; when the conductive double-rotation meter upper cover 2022 is provided with a plurality of groups of contacts 2023, and the conductive double-rotation meter is provided with wiring harnesses, the lower guide rail corresponds to the contacts 2023 above the lower guide rail one by one, and the guide rail is provided with a conductive copper sheet to complete the conduction of current.

The worm wheel 2012 and the worm 2013 are small in structure size, can obtain a larger reduction ratio, can play a self-locking role, and ensure the stability of the vehicle in the running process. The rotary support bearing not only can lead the wheels to steer omnidirectionally, but also has the function of effectively reducing vibration and noise. The servo motor 2016 powers the slewing bearing and can precisely control the steering angle of the vehicle.

When the wheel turns 360 degrees, the wheel drives the lower end of the rotary support bearing to rotate and drives the conductive double-rotary instrument base 2021 to rotate, the rotary support bearing drives the conductive double-rotary instrument upper cover 2022 to rotate, the two rotate respectively and do not interfere with each other, and the contact 2023 slides on the guide rail to enable current to be transmitted, so that the wire bundles cannot be intertwined together.

The conductive copper sheet is attached to the guide rail.

The conductive copper sheet is attached to the surface of the guide rail, so that the contact has good contact with the conductive copper sheet on the surface of the guide rail, and the conductive effect is ensured.

The contact (2023) is made of graphite material, a spring is arranged at one end of the contact (2023) connected with the upper cover (2022) of the conductive double-rotation instrument, the end part of the contact (2023) is connected with the upper cover (2022) of the conductive double-rotation instrument through the spring, and the spring enables the contact (2023) to be in close contact with the guide rail.

By the arrangement, the stability of conduction between the components is further improved.

Referring to fig. 1 and 2, it can be seen that an omnidirectional skateboard chassis applied in the present embodiment is composed of a suspension mechanism 1, a steering mechanism 2, a driving mechanism 3, a braking mechanism 4, and a frame 5, wherein the steering mechanism 2 is the technical scheme of the present utility model.

Referring to fig. 3, the suspension mechanism 1 is composed of a damper spring 101, a guide rod 102, a torsion beam 103, and a trailing arm 104.

Damping spring 101 is articulated between torsion girder 103 and frame 5 through the hinge, and damping spring 101's both ends are connected with the gum cover, thereby gum cover and hinge articulated realize flexonics, and torsion girder 103 is integral type structure, and steering mechanism 2 of wheel is all connected at torsion girder 103's both ends to adopt the bolt fastening on steering mechanism 2, drag arm 104's both ends and frame 5's bottom and torsion girder 103 carry out flexonics, and flexonics mode is the same with damping spring 101's flexonics mode. The guide pull rod 102 is also hinged between the torsion steel beam 103 and the frame 5 by adopting a hinge and a rubber sleeve.

Damping spring 101, trailing arm 104, direction pull rod 102 quantity is corresponding with the quantity of wheel, all set up to four, and all adopt the hinge gum cover to connect between torsion girder 103 and frame 5, make this qxcomm technology skateboard chassis shock attenuation effect better, can improve the stability of vehicle greatly, and when the vehicle passes through complicated road surface, elastic deformation takes place for the gum cover wherein, guarantee the stability of vehicle, direction pull rod 102, torsion girder 103 and frame 5 constitute trapezium structure, frame 5 upper end, direction pull rod 102 is the waist, torsion girder 103 is the lower end, trapezium structure is more stable, can prevent that frame 5 from taking place torsional deformation, can prevent that the condition that one side was submerged from appearing in the vehicle, torsion girder 103 takes place elastic torsion, and can play guiding mechanism effect with trailing arm 104, make the driving force transmit the automobile body. The damping spring 101, the trailing arm 104, the torsion steel beam 103 and the guide pull rod 102 are arranged to form a transverse double-cross-arm damping framework, the guide pull rod 102 is an upper cross arm, and the trailing arm 104 is a lower cross arm, so that the structure is more stable, the forward tilting of the suspension can be effectively reduced, and the vehicle is more stable in running.

Referring to fig. 6 and 7, the driving mechanism 3 is composed of a planetary reducer 301, a permanent magnet synchronous motor 302, and a hub bearing 303.

The permanent magnet synchronous motor 302 is fixed on the outermost side of the front fork of the wheel, engaged with the planetary reducer 301 through a spline, and fixed on the front fork of the wheel through a bolt. The planetary reducer 301 is disposed inside the front fork, is fixed by bolts while being fitted inside the front fork, and an output shaft of the planetary reducer 301 is engaged with the hub bearing 303 by a key, reducing the lateral dimension. The hub bearing 303 is arranged at the innermost side of the driving mechanism 3, is combined with the tire, adopts the existing standard component, is convenient to maintain, has high adaptation degree with the tire, and is fixed on the wheel through bolts. The planetary reducer 301 adopts multistage reduction, and is provided with a high reduction ratio, and can be configured with motors of different types, so that the output rotating speed of the motors can be effectively reduced, and the output torque can be improved. The planetary reducer 301 is internally provided with the needle bearing, and the permanent magnet synchronous motor 302, the plurality of planetary carriers and the output shaft are in key connection through the needle bearing, so that the permanent magnet synchronous motor 302, the plurality of planetary carriers and the output shaft are always in a concentric state, the arrangement can enable the planetary reducer 301 to bear bending moment, the bearing capacity of the planetary reducer 301 is improved, friction can be effectively reduced, and the service life of the planetary reducer 301 is prolonged. The permanent magnet synchronous motor has small volume, simple structure, low failure rate and good controllability. The hub bearing 303 has the advantages of light weight, compact structure, large bearing capacity and good assembly performance, and can also play a role in sealing. Such an arrangement of the drive mechanism 3 can effectively reduce the lateral dimension of the vehicle when the vehicle is turning.

The brake mechanism 4 is composed of a brake caliper 401, a brake disc 402 and EPB electronic parking.

The brake disc 402 is locked in the brake caliper 401 and is connected to the wheel by bolts. The EPB is arranged on the brake caliper 401, the brake caliper is a standard part, the maintenance is convenient, the EPB can realize the parking function of the vehicle, the EPB is convenient and reliable, and the unexpected release can be prevented.

Referring to fig. 1 and 8, the frame 5 has a frame structure, which is convenient to manufacture and can flexibly change the size of vehicles with different sizes. The frame structure is provided with a plurality of triangular structures, and the triangular structures are formed by vertical frames, transverse frames and inclined frames, so that the stability and bearing capacity of the whole frame 5 can be improved.

The working principle of this embodiment is as follows:

first: and (3) whole vehicle suspension control: the damping spring 101, the trailing arm 104, the torsion steel beam 103 and the guide pull rod 102 are arranged to form a transverse double-cross-arm damping framework, the guide pull rod 102 is an upper cross arm, and the trailing arm 104 is a lower cross arm, so that the structure is more stable, the forward tilting of the suspension can be effectively reduced, and the vehicle is more stable when running. When the vehicle passes through a complex road surface, the damping spring 101, the trailing arm 104, the torsion steel beam 103 and the guide pull rod 102 act together to ensure that the vehicle body is stable. Damping spring 101 connects and sets up between torsion girder 103 and frame 5, and the junction adopts hinge, gum cover to carry out flexible articulated connection, and torsion girder 103 is integral type structure, and the steering mechanism 2 of every wheel is respectively connected at the both ends of torsion girder 103 to adopt the bolt fastening on steering mechanism 2, drag arm 104 adopts the hinge gum cover to carry out flexible connection with frame 5 bottom and torsion girder 103, and guide pull rod 102 adopts the hinge gum cover to fix at torsion girder 103 and frame 5 upper end. Damping spring 101, trailing arm 104, direction pull rod 102 quantity all sets up to four, adopt the gum cover to fix at torsion girder 103 and frame 5, make its shock attenuation effect better, can improve the stability of vehicle greatly, and when the vehicle passes through complicated road surface, elastic deformation takes place for the gum cover wherein, guarantee the stability of vehicle, the ladder-shaped structure is constituteed to direction pull rod 102, torsion girder 103 and frame 5, more stability like this, can prevent that frame 5 from taking place torsional deformation, can prevent that the vehicle from appearing the condition that one side is submerged, torsion girder 103 takes place elastic torsion, and can play guiding mechanism effect with trailing arm 104, make the drive force transfer to the automobile body.

Second,: steering control of the whole vehicle: the steering part is a slewing bearing, which is fixed on the torsion steel beam 103 and the front fork by bolts, and a servo motor 2016 is arranged on the inner side of the steering part to drive the slewing bearing. The slewing bearing is a worm wheel 2012 and worm 2013 structure. The worm wheel 2012 and the worm 2013 are small in size, can obtain a larger reduction ratio, can play a self-locking role, and ensure the stability of the vehicle in the running process. The rotary support bearing not only can lead the wheels to steer omnidirectionally, but also has the function of effectively reducing vibration and noise. The servo motor 2016 powers the slewing bearing and can precisely control the steering angle of the vehicle.

Third,: and (3) overall electric conduction control: the conductive part is a conductive double-rotation meter, and the conductive double-rotation meter comprises a conductive double-rotation meter base 2021, a conductive double-rotation meter upper cover 2022, a contact 2023 and a wiring terminal 2024. The conductive double-rotation meter is arranged at the middle gap of the slewing bearing, the conductive double-rotation meter base 2021 is fixed at the bottom of the slewing bearing by a plurality of bolts, a plurality of circles of guide rails are arranged above the conductive double-rotation meter base 2021, a plurality of wire passing holes are formed in the middle of the guide rails, a connecting terminal 2024 is arranged at the bottom end of each hole, the connecting terminal 2024 is combined with a front fork, the front fork adopts a hollow structure, a wire harness penetrates through the hollow structure, and the conductive double-rotation meter base 2021 rotates along with the rotation of a wheel. The conductive double-rotation meter upper cover 2022 is fixed above the slewing bearing by a plurality of bolts, holes of a plurality of groups of contacts 2023 are arranged at the bottom of the conductive double-rotation meter upper cover 2022, wire passing holes are drilled at the holes of the conductive double-rotation meter upper cover 2022, and the conductive double-rotation meter upper cover 2022 rotates along with the slewing bearing. The contact 2023 is made of graphite material, and a spring is mounted at the tail end of the contact 2023 to enable the contact 2023 to be in close contact with the guide rail, and a plurality of groups of contacts 2023 are arranged on the upper cover 2022 of the conductive double-rotation meter, so that the structural reliability can be improved. When the conductive double-rotation instrument is used for arranging the wire harnesses, the lower guide rail corresponds to the contacts 2023 above the guide rail one by one, and the guide rail is provided with a conductive copper sheet, so that the current conduction can be completed. The advantage of this arrangement is that when the wheel turns 360 degrees, the wheel drives the lower end of the rotary support bearing to rotate and drives the conductive bispin instrument base 2021 to rotate, the rotary support bearing drives the conductive bispin instrument upper cover 2022 to rotate, the two rotate respectively and do not interfere with each other, and the firing pin slides on the guide rail of the firing pin, so that the current is transmitted, and the wiring harness of the firing pin cannot be intertwined together.

Fourth,: and (3) whole vehicle driving control: the permanent magnet synchronous motor 302 generates power, the power is transmitted to the planetary reducer 301, and the planetary reducer 301 performs speed reduction and torque increase and then transmits to wheels. The permanent magnet synchronous motor 302 is fixed at the outermost side of the front fork of the wheel, and the permanent magnet synchronous motor 302 is meshed with the planetary reducer 301 through a spline. The planetary reducer 301 is disposed inside the front fork, is engaged with the inside of the front fork and is fixed by a bolt, and an output shaft of the planetary reducer 301 is engaged with the hub bearing 303 by a key, reducing the lateral dimension. The hub bearing 303 is arranged at the innermost side of the driving mechanism 3, is combined with the tire, adopts the existing standard component, is convenient to maintain, has high adaptation degree with the tire, and is fixed on the wheel through bolts. The planetary reducer 301 adopts multistage speed reduction, is provided with a high reduction ratio, can be configured with motors of different types, and can effectively reduce the output rotating speed of the motors and improve the output torque. The planetary reducer 301 is internally provided with the needle bearing, and the permanent magnet synchronous motor 302, the plurality of planetary carriers and the output shaft are in key connection through the needle bearing, so that the permanent magnet synchronous motor 302, the plurality of planetary carriers and the output shaft are always in a concentric state, the arrangement can enable the planetary reducer 301 to bear bending moment, the bearing capacity of the planetary reducer 301 is improved, friction can be effectively reduced, and the service life of the planetary reducer 301 is prolonged. The permanent magnet synchronous motor has small volume, simple structure, low failure rate and good controllability. The hub bearing 303 has the advantages of light weight, compact structure, large bearing capacity and good assembly performance, and can also play a role in sealing. Such an arrangement of the drive mechanism 3 can effectively reduce the lateral dimension of the vehicle when the vehicle is turning.

The foregoing description is only of the preferred embodiments of the utility model and is not intended to limit the scope of the claims, but rather the equivalent structural changes made by the application of the present description and drawings are intended to be included within the scope of the claims.

Claims (3)

1. The utility model provides a slide chassis is with steering mechanism, includes steering part, electrically conductive part, its characterized in that:

the steering part is provided with a rotary support bearing which is fixed on the torsion steel beam (103) and the front fork, and a servo motor (2016) is arranged at the inner side of the steering part to drive the rotary support bearing; the slewing bearing is in a worm wheel (2012) and worm (2013) structure;

the conductive part is a conductive double-rotation instrument, the conductive double-rotation instrument is arranged at the middle gap of the rotary support bearing and comprises a conductive double-rotation instrument base (2021), a conductive double-rotation instrument upper cover (2022) and a contact (2023), and a wiring terminal (2024); the conductive double-rotation meter base (2021) is fixed at the bottom of the slewing bearing, a plurality of rings of guide rails are arranged above the conductive double-rotation meter base (2021), a plurality of wire passing holes are formed in the middle of the guide rails, connecting terminals (2024) are arranged at the bottom ends of the holes, one ends of the connecting terminals (2024) are connected with the conductive double-rotation meter base (2021), the other ends of the connecting terminals (2024) are matched with a front fork, the front fork adopts a hollow structure, a wire harness passes through the hollow structure and is connected with conductive copper sheets at the guide rails through the connecting terminals (2024), and the conductive double-rotation meter base (2021) rotates along with rotation of wheels; the conductive double-rotation meter upper cover (2022) is fixed above the slewing bearing, holes of a plurality of groups of contacts (2023) are arranged at the bottom of the conductive double-rotation meter upper cover (2022), wire passing holes are drilled at the holes of the conductive double-rotation meter upper cover (2022) to correspond to the holes one by one, and the conductive double-rotation meter upper cover (2022) rotates along with the slewing bearing; when the conductive double-rotation instrument upper cover (2022) is provided with a plurality of groups of contacts (2023), and the conductive double-rotation instrument is provided with a wire harness, the lower guide rail corresponds to the contacts (2023) above the conductive double-rotation instrument one by one, and the guide rail is provided with a conductive copper sheet to complete the current conduction.

2. The steering mechanism for a skateboard chassis according to claim 1, wherein: the conductive copper sheet is attached to the guide rail.

3. The steering mechanism for a skateboard chassis according to claim 1, wherein: the contact (2023) is made of graphite materials, a spring is arranged at one end of the contact (2023) connected with the upper cover (2022) of the conductive double-rotation instrument, the end part of the contact (2023) is connected with the upper cover (2022) of the conductive double-rotation instrument through the spring, and the spring enables the contact (2023) to be in close contact with the guide rail.