阅读说明：本技术 四轮独立转向驱动公铁车 (Four-wheel independent steering driving railway vehicle ) 是由 张军民 卢衍伟 高希妨 刘雪飞 孙继伟 陈全雷 于 2021-08-24 设计创作，主要内容包括：本发明公开一种四轮独立转向驱动公铁车,包括：车底盘；公路走行模块包括四个转向行走组件,转向行走组件包括车轮、转动架、牵引电机和转动电机,车轮通过车轴设置在转动架上,牵引电机设置在转动架上并与转轴传动连接,转动架可转动地设置在车底盘上,转动电机设置在车底盘上并用于驱动转动架转动；铁路走行模块包括两个导向组件,导向组件包括升降机构、升降架、轮轴和两个导向轮,导向轮设置在轮轴的端部,轮轴设置在升降架上,升降架可滑动地设置在车底盘的对应端部,升降机构设置在车底盘上并用于驱动升降架上下滑动。实现减小四轮独立转向驱动公铁车的转弯半径,以提高四轮独立转向驱动公铁车的通过性。(The invention discloses a four-wheel independent steering drive railway vehicle, which comprises: a chassis; the road traveling module comprises four steering traveling assemblies, each steering traveling assembly comprises a wheel, a rotating frame, a traction motor and a rotating motor, the wheels are arranged on the rotating frames through axles, the traction motors are arranged on the rotating frames and are in transmission connection with rotating shafts, the rotating frames are rotatably arranged on a chassis, and the rotating motors are arranged on the chassis and are used for driving the rotating frames to rotate; the railway walking module comprises two guide assemblies, each guide assembly comprises a lifting mechanism, a lifting frame, a wheel shaft and two guide wheels, the guide wheels are arranged at the end parts of the wheel shafts, the wheel shafts are arranged on the lifting frames, the lifting frames are slidably arranged at the corresponding end parts of the chassis, and the lifting mechanisms are arranged on the chassis and used for driving the lifting frames to slide up and down. The turning radius of the four-wheel independent steering drive railway vehicle is reduced, so that the trafficability of the four-wheel independent steering drive railway vehicle is improved.)

1. The utility model provides a four-wheel independent steering drive railcar which characterized in that includes:

the vehicle comprises a vehicle chassis, wherein a cab is arranged on the vehicle chassis;

the road walking module comprises four steering walking components, the four steering walking components are distributed at four corners of a chassis, each steering walking component comprises a wheel, a rotating frame, a traction motor and a rotating motor, the wheels are arranged on the rotating frames through axles, the traction motors are arranged on the rotating frames and are in transmission connection with rotating shafts, the rotating frames are rotatably arranged on the chassis, and the rotating motors are arranged on the chassis and are used for driving the rotating frames to rotate;

the railway running module comprises two guide assemblies, each guide assembly comprises a lifting mechanism, a lifting frame, a wheel shaft and two guide wheels, the guide wheels are arranged at the end parts of the wheel shafts, the wheel shafts are arranged on the lifting frames, the lifting frames are slidably arranged at the corresponding end parts of the chassis, and the lifting mechanisms are arranged on the chassis and are used for driving the lifting frames to slide up and down.

2. A four-wheel independent steering drive railcar according to claim 1, wherein said rotating motor is provided with a main gear, said turret is provided with a pinion, and said main gear is engaged with said pinion.

3. A four-wheel independent steering drive railcar according to claim 1, wherein said lifting mechanism comprises two guide cylinders arranged vertically side by side; the crane comprises two sliding rods, the end part of the chassis is also provided with two vertically arranged sliding sleeves, the sliding rods are arranged in the corresponding sliding sleeves in a sliding mode, the upper end parts of the sliding rods are connected with the corresponding piston rods of the guide oil cylinders, and the wheel shafts are arranged between the two sliding rods.

4. A four wheel independent steering drive railcar according to claim 1, wherein said cab is detachably mounted on said chassis.

5. A four-wheel independent steering drive railcar according to any one of claims 1, characterized in that both ends of the chassis are provided with a coupler, respectively.

6. The four-wheel independent steering drive railcar according to claim 5, wherein the two end portions of the chassis are respectively provided with a height adjusting mechanism, the height adjusting mechanism comprises a mounting seat, a guide rail and a driving part, the guide rail is vertically arranged on the chassis, the mounting seat is slidably arranged on the guide rail, the driving part is used for driving the mounting seat to slide up and down, and the coupler is arranged on the mounting seat.

7. The four-wheel independent steering drive rail car according to claim 6, wherein the driving part comprises a screw rod, a threaded hole is formed in the mounting seat, the screw rod is rotatably arranged on the car chassis, and the screw rod is in threaded connection with the threaded hole.

Technical Field

The invention relates to the technical field of rail cars, in particular to a four-wheel independent steering drive rail car.

Background

At present, the dual-purpose vehicle for railway and road can not only run on the road, but also run on the railway, so that the dual-purpose vehicle for railway and road is widely applied to the rail transportation industry, and the dual-purpose vehicle for railway and road is generally used for the operations of railway traction, rush repair, construction, emergency rescue and the like. For example: chinese patent publication No. CN 204506372U discloses a railway car which uses a conventional car as a main body and is equipped with guide wheels for railway running. The automobile is limited by the structure of the automobile, the front wheel of the automobile needs to be rotated when the automobile turns, and the whole length of the automobile is longer, so that the turning radius is larger and the trafficability characteristic is poorer. How to design a vehicle with a reduced turning radius to improve trafficability is a technical problem to be solved by the invention.

Disclosure of Invention

The invention provides a four-wheel independent steering drive railway vehicle, which can reduce the turning radius of the four-wheel independent steering drive railway vehicle so as to improve the trafficability of the four-wheel independent steering drive railway vehicle.

In order to achieve the purpose, the invention adopts the following technical scheme:

the invention provides a four-wheel independent steering drive railway vehicle, which comprises:

the vehicle comprises a vehicle chassis, wherein a cab is arranged on the vehicle chassis;

the road walking module comprises four steering walking components, the four steering walking components are distributed at four corners of a chassis, each steering walking component comprises a wheel, a rotating frame, a traction motor and a rotating motor, the wheels are arranged on the rotating frames through axles, the traction motors are arranged on the rotating frames and are in transmission connection with rotating shafts, the rotating frames are rotatably arranged on the chassis, and the rotating motors are arranged on the chassis and are used for driving the rotating frames to rotate;

the railway running module comprises two guide assemblies, each guide assembly comprises a lifting mechanism, a lifting frame, a wheel shaft and two guide wheels, the guide wheels are arranged at the end parts of the wheel shafts, the wheel shafts are arranged on the lifting frames, the lifting frames are slidably arranged at the corresponding end parts of the chassis, and the lifting mechanisms are arranged on the chassis and are used for driving the lifting frames to slide up and down.

Furthermore, a main gear is arranged on the rotating motor, an auxiliary gear is arranged on the rotating frame, and the main gear is meshed with the auxiliary gear.

Furthermore, the lifting mechanism comprises two guide oil cylinders which are vertically arranged side by side; the crane comprises two sliding rods, the end part of the chassis is also provided with two vertically arranged sliding sleeves, the sliding rods are arranged in the corresponding sliding sleeves in a sliding mode, the upper end parts of the sliding rods are connected with the corresponding piston rods of the guide oil cylinders, and the wheel shafts are arranged between the two sliding rods.

Further, the cab is detachably mounted on the chassis.

Furthermore, car couplers are respectively arranged at two end parts of the car chassis.

Further, the two end portions of the chassis are respectively provided with a height adjusting mechanism, each height adjusting mechanism comprises a mounting seat, a guide rail and a driving part, the guide rails are vertically arranged on the chassis, the mounting seats are slidably arranged on the guide rails, the driving parts are used for driving the mounting seats to slide up and down, and the car coupler is arranged on the mounting seats.

Furthermore, the driving part comprises a screw rod, a threaded hole is formed in the mounting base, the screw rod is rotatably arranged on the chassis, and the screw rod is in threaded connection with the threaded hole.

Compared with the prior art, the technical scheme of the invention has the following technical effects: through configuring four independent drive and the walking subassembly that turns to that can turn to automatically, at the actual in-process of traveling, can carry out the turn of minor radius as required, can also transversely travel or pivot to satisfy the operation requirement in narrow and small space, realize reducing the turn radius of four-wheel independent steering drive railway car, in order to improve the trafficability characteristic of four-wheel independent steering drive railway car.

Drawings

FIG. 1 is a schematic structural view of a four-wheel independent steering drive railcar according to the present invention;

FIG. 2 is a schematic structural view of a steering and traveling assembly of the four-wheel independent steering drive railway vehicle according to the present invention;

FIG. 3 is a schematic structural view of a steering assembly in the four-wheel independent steering drive railcar according to the present invention;

FIG. 4 is a schematic structural view of a height adjustment mechanism in the four-wheel independent steering drive road-rail vehicle of the present invention;

FIG. 5 is a schematic diagram of the brake mechanism in the four-wheel independent steering drive railcar of the present invention.

Reference numerals:

a chassis 1;

a cab 11, a sliding sleeve 12;

a steering and walking component 2;

the device comprises wheels 21, a rotating frame 22, a traction motor 23, a rotating motor 24, a main gear 25 and a pinion 26;

a guide assembly 3;

the lifting mechanism 31, the lifting frame 32, the wheel shaft 33 and the guide wheel 34;

a guide cylinder 311, a slide rod 321;

a coupler 4;

a height adjusting mechanism 5;

a mounting base 51, a guide rail 52, a driving member 53;

a brake mechanism 6;

an electric brake controller 61, an electric regenerative brake 62, an electromagnetic brake 63, an eddy current brake 64;

and a wireless communication module 7.

Detailed Description

In a first embodiment, as shown in fig. 1 to 4, the present invention provides a four-wheel independent steering drive railroad car, including:

the vehicle comprises a vehicle chassis 1, wherein a cab 11 is arranged on the vehicle chassis 1;

the road walking module comprises four steering walking components 2, the four steering walking components 2 are distributed at four corners of a chassis 1, each steering walking component 2 comprises a wheel 21, a rotating frame 22, a traction motor 23 and a rotating motor 24, the wheels 21 are arranged on the rotating frames 22 through axles, the traction motors 23 are arranged on the rotating frames 22 and are in transmission connection with rotating shafts, the rotating frames 22 are rotatably arranged on the chassis 1, and the rotating motors 24 are arranged on the chassis 1 and are used for driving the rotating frames 22 to rotate;

the railway running module comprises two guide assemblies 3, each guide assembly 3 comprises a lifting mechanism 31, a lifting frame 32, a wheel shaft 33 and two guide wheels 34, the guide wheels 34 are arranged at the end parts of the wheel shafts 33, the wheel shafts 33 are arranged on the lifting frames 32, the lifting frames 32 can be slidably arranged at the corresponding end parts of the vehicle chassis 1, and the lifting mechanisms 31 are arranged on the vehicle chassis 1 and used for driving the lifting frames 32 to slide up and down.

Particularly, this embodiment four-wheel independent steering drive railway carriage is disposed four and is turned to running gear 2 on chassis 1, and four are turned to running gear 2 and can independently go and turn to, like this, in the use, through adjusting four turned angle who turns to running gear 2, alright realize the turn of arbitrary angle, and then reduce turning radius. Meanwhile, the transverse translation or the in-situ rotation can be realized according to the requirement.

The railway running module drives the lifting frame 32 to move downwards through the lifting mechanism 31, so that the guide wheels 34 abut against the steel rails, and the requirement of railway running is met.

Further, in order to control the rotation of the wheel 21, a main gear 25 may be provided on the rotation motor 24, and a sub-gear 26 may be provided on the turret 22, wherein the main gear 25 is engaged with the sub-gear 26. Specifically, the rotation motor 24 drives the main gear 25 to rotate, and further drives the sub-gear 26 to rotate through the main gear 25, and the sub-gear 26 will drive the rotating rack 22 to rotate, so as to adjust the rotation angle of the wheel 21.

Still further, the lifting mechanism 31 includes two guide cylinders 311 arranged vertically side by side; the lifting frame 32 comprises two sliding rods 321, the end part of the chassis 1 is also provided with two vertically arranged sliding sleeves 12, the sliding rods 321 are slidably arranged in the corresponding sliding sleeves 12, the upper end parts of the sliding rods 321 are connected with the piston rods of the corresponding guide oil cylinders 311, and the wheel shaft 33 is arranged between the two sliding rods 321.

Specifically, in order to make the guide wheels 34 at the two end portions of the axle rise and fall smoothly, two guide cylinders 311 arranged side by side may be disposed on the chassis 1, and the guide cylinders 311 may drive the sliding rod 321 to slide up and down smoothly in the sliding sleeve 12, so as to drive the guide wheels 34 to move up and down through the wheel axle 33.

Based on the technical scheme, optionally, the two end parts of the chassis 1 are respectively provided with a car coupler 4.

In particular, the coupler 4 on the chassis 1 can draw the vehicles on the road or the railway according to the requirements. Preferably, in order to meet the use requirements of different vehicles to be towed, the two end parts of the chassis 1 are respectively provided with a height adjusting mechanism 5, the height adjusting mechanism 5 comprises a mounting seat 51, a guide rail 52 and a driving part 53, the guide rail 52 is vertically arranged on the chassis 1, the mounting seat 51 is slidably arranged on the guide rail 52, the driving part 53 is used for driving the mounting seat 51 to slide up and down, and the coupler 4 is arranged on the mounting seat 51.

Specifically, the coupler 4 is mounted on the mounting seat 51, and the driving part 53 drives the mounting seat 51 to move up and down to adjust the height position of the coupler 4, so as to meet the traction requirements of vehicles with different heights. The driving part 53 comprises a screw rod, a threaded hole is formed in the mounting base 51, the screw rod is rotatably arranged on the chassis 1, and the screw rod is in threaded connection with the threaded hole. The height of the car coupler 4 can be adjusted, coupling with vehicles with different heights of passenger cars, motor cars and metro vehicles is achieved, and in addition, the car coupler 4 is detachably installed on the installation base 51, so that the car coupler 4 of each car type is convenient to disassemble and install, and exchange functions are achieved.

In another embodiment, the cab 11 is detachably mounted on the chassis 1 to meet the use requirements of different working conditions. Specifically, the cab 11 is designed in a modular manner and is mounted on the chassis 1 in a detachable connection manner such as a bolt.

In the second embodiment, based on the first embodiment, as shown in fig. 5, since the four-wheel independent steering drive railway vehicle uses electric energy as driving force, in order to recover the electric energy, a power battery (not shown) may be disposed on the chassis 1, and similarly, in order to reduce energy consumption, improve braking performance, and reduce maintenance cost, the four-wheel independent steering drive railway vehicle further includes a brake mechanism 6, the brake mechanism 6 includes an electric brake controller 61, a plurality of electric regenerative brakes 62 and a plurality of electromagnetic brakes 63, the electric regenerative brakes 62 are disposed on the corresponding traction motors 23, the electromagnetic brakes 63 are disposed on the corresponding axles, and the electric regenerative brakes 62 and the electromagnetic brakes 63 are respectively electrically connected to the electric brake controller 61; the power battery is used for supplying power to the traction motor 23 and the electromagnetic brake 63, and the electric regenerative brake 62 is also used for charging the power battery.

Specifically, the four-wheel independent steering drive railway vehicle needs to be braked as required during running, and when braking is required, the electric brake controller 61 controls the electric regenerative brake 62 and the electromagnetic brake 63 to operate, the electric regenerative brake 62 generates electric power by the inertial rotation of the traction motor 23 and brakes the wheel axle 33 by the electromagnetic brake 63 as a supplement to the electric regenerative braking force.

Further, the four-wheel independent steering drive railway wagon further comprises an eddy current brake 64, the eddy current brake 64 is arranged on the wagon chassis 1, the eddy current brake 64 is electrically connected with the electric brake controller 61, and the power battery is further used for supplying power to the eddy current brake 64.

Specifically, when the electromagnetic brake 63 and the electric regenerative brake 62 both reach the maximum braking force, the eddy current brake 64 can be activated, the electric brake controller 61 controls the eddy current brake 64 to be electrified to generate a magnetic field, the steel rail is in a changing magnetic field and a relative moving magnetic field, and the magnetic flux passing through any loop of the steel rail is changed to generate the eddy current braking force.

The electromagnetic brake 63 is in a braking state when the power is off, so that the requirement of parking braking can be met in a parking state.

In addition, a wheel speed sensor (not shown) for detecting the rotation speed of the wheel 21 at the corresponding position is also provided for each wheel 21. Specifically, the wheel speed sensor detects speed signals corresponding to the wheels 21, and the electric brake controller 61 then performs dynamic adjustment of braking torque based on these signals, such as speed difference, deceleration, and traction load, to prevent the wheels from being locked and scratched.

The further four-wheel independent steering driving railway vehicle further comprises a wireless communication module 7, and the wireless communication module 7 is electrically connected with the electric brake controller 61.

Specifically, because the electric brake mode is adopted, a control signal can be sent to the electric brake controller 61 in a remote control mode so as to realize remote control braking.

The brake mode comprises the following brake modes:

1) in the normal service running braking mode, when a traction vehicle works, in order to control the speed of traction work, the wireless remote control system sends out an electric regenerative braking instruction, the electric brake controller controls the electric regenerative brake to realize regenerative braking speed regulation, the regenerative braking energy charges a power battery, and the braking force is controlled by the electric brake handle position of the wireless remote control system; the braking speed and the braking force are transmitted to the display screen of the remote controller through wireless. The electric brake controller can automatically calculate a target electric brake force value according to the current speed and traction load conditions of the traction operation vehicle, and the magnitude of the brake force can be different when the traction load is different in the same regenerative brake handle position, so that the dynamic adjustment control of the brake force is realized. When the electric regenerative braking energy charges the power battery, the electric regenerative brake controls that when the voltage and the residual capacity of the power battery pack reach the highest limit, the redundant braking energy is consumed on the braking resistor.

2) In the parking braking mode, the electric braking controller controls the electric regenerative brake to realize regenerative braking speed regulation and charge the power storage battery; meanwhile, the electric brake controller controls the electromagnetic brake to work, and the electromagnetic brake realizes electric axle-hung brake through electromagnetic clutch as supplement of electric regenerative braking force; when the tractor is stopped and braked, the electric regenerative braking force and the electromagnetic brake braking force are the maximum values.

3) And a rapid braking mode, wherein rapid braking is a braking action taken to enable the safety coefficient of traction operation braking to reach the maximum value. When the quick brake is applied, the electric regenerative brake and the electromagnetic brake are operated at full load. When the electric regenerative brake is used for fast braking, the electric brake controller controls the electric regenerative brake and the electromagnetic brake to act together, meanwhile, speed signals of the wheel speed sensor are monitored, and then dynamic adjustment of braking torque is carried out according to speed difference, deceleration and traction load of signals corresponding to different wheels, so that locking and scratching of the wheels are prevented.

4) In the short-time parking braking mode, when the vehicle needs to be dispatched for braking in the short-time parking mode, the tractor is subjected to zero-speed electric locking control through the electric regenerative brake; the electric brake controller monitors a speed signal of the wheel speed sensor, controls the electric regenerative brake to automatically apply zero-speed self-locking torque, and realizes electric parking brake (a vehicle is not required to be provided with a hand brake or an electronic hand brake system); the zero-speed locking brake can ensure that the vehicle does not slide when the vehicle is stopped, braked and restarted on a slope, and the safety during traction operation is improved.

5) And in the long-term parking braking mode of the vehicle, when the traction vehicle needs to be parked for a long time, the power supply of the tractor is cut off, the electromagnetic brake is powered off, and the automatic axle-clasping realizes the long-term parking braking of the vehicle.

6) In the emergency braking mode, when the load of a tractor traction vehicle meets an emergency, the electric brake controller receives emergency braking information of the remote controller, controls the electric regenerative brake to realize the maximum regenerative braking force and simultaneously charges the power battery; controlling an electromagnetic brake to realize the brake of the maximum electric axle-clasping brake force; the electric brake controller controls the electric eddy current brake to be electrified to generate a magnetic field, the steel rail is positioned in the changing magnetic field and the relatively moving magnetic field, and the magnetic flux passing through any loop of the steel rail is changed to generate the eddy current brake force. Once the emergency brake is applied, the control circuit of the emergency brake safety circuit can ensure that the emergency brake remains applied until the train is completely stopped. When the infinite remote controller reset button is pressed and an excitation source for triggering emergency braking and an emergency braking instruction of the electric braking device are eliminated, the emergency braking can be relieved. The anti-lock function remains active during emergency braking, the application of which is irreversible.

7) In the anti-impact braking mode, when the tractor pulls different vehicle loads, in order to avoid generating braking impact, the electric braking device can automatically adjust the braking level according to the load, the braking is smooth and adjustable, and the output of the braking force is in a slow ascending/descending type, so that the braking safety is ensured, and the optimal anti-impact braking is realized. For the specific process of adjusting the braking level, reference may be made to a conventional mechanical braking manner, which is not described or limited herein.

Compared with the prior art, the technical scheme of the invention has the following technical effects: through configuring four independent drive and the walking subassembly that turns to that can turn to automatically, at the actual in-process of traveling, can carry out the turn of minor radius as required, can also transversely travel or pivot to satisfy the operation requirement in narrow and small space, realize reducing the turn radius of four-wheel independent steering drive railway car, in order to improve the trafficability characteristic of four-wheel independent steering drive railway car.

The above description is only for the specific embodiments of the present invention, but the scope of the present invention is not limited thereto, and any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present invention are included in the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.