Electric flat carriage for conveying strip steel

Abstract

An electric flat carriage for conveying strip steel belongs to the technical field of conveying devices, and aims to solve the problems of inconvenience in loading and unloading and inflexibility in steering when an existing electric flat carriage conveys the strip steel, and the electric flat carriage comprises a carriage body, a limiting unit, a driving wheel assembly, a steering wheel assembly and a mobile power supply, the limiting unit is arranged at the tail end of the vehicle body and detachably connected with the vehicle body, the driving wheel assembly, the steering wheel assembly and the mobile power source are arranged at the bottom of the vehicle body, the driving wheel assembly is arranged close to the tail end of the vehicle body and fixedly connected with the vehicle body, and the steering wheel assembly is arranged close to the head end of the vehicle body and fixedly connected with the vehicle body. The mobile power source is arranged between the driving wheel assembly and the steering wheel assembly and detachably connected with the vehicle body, the driving wheel assembly is used for providing power for driving the electric flat carriage to move, the steering wheel assembly is used for adjusting the moving direction of the electric flat carriage, and the mobile power source is used for supplying power to the driving wheel assembly and the steering wheel assembly. The device is used as a transportation tool for transferring the strip steel.

Description

Technical Field

[0001] This utility model belongs to the field of transportation device technology, specifically relating to an electric flatcar for transporting steel strips. Background Technology

[0002] In recent years, with the advancement of science and technology, the development of industrial automation, the gradual improvement of the performance of mechanical transportation equipment, and the national call for energy conservation and emission reduction, transportation vehicles based on hydraulic transmission systems can no longer meet the actual needs of enterprises. Transportation vehicles now require not only high load-bearing capacity but also smooth transportation, ease of operation, and energy conservation. Against this backdrop, major domestic and international transportation equipment manufacturers have begun to vigorously produce environmentally friendly electric flatbed carts that meet market demands.

[0003] In modern factories and garages, electric flatbed carts play a crucial role in cargo transfer due to their convenient loading and unloading, high load-bearing capacity, and ease of operation. Steel strips are often transported wound into rings. Since the bearing surface of traditional electric flatbed carts is flat, the end face of the wound steel rings needs to contact the bearing surface of the cart during transport. This ensures the stability of the transport but is not conducive to loading and unloading. Furthermore, the steering of traditional electric flatbed carts is mostly achieved through gear transmission, which is not ideal for steering when carrying heavy workpieces. Therefore, developing an electric flatbed cart that facilitates loading and unloading of steel rings and allows for flexible steering during transport is highly practical. Utility Model Content

[0004] In order to solve the problems of inconvenient loading and unloading and inflexible steering of existing electric flatbed carts when transporting strip steel, this utility model provides an electric flatbed cart for transporting strip steel.

[0005] An electric flatcar for transporting steel strips includes a car body, a limiting unit, a drive wheel assembly, a steering wheel assembly, and a mobile power supply. The limiting unit is located at the rear end of the car body and is detachably connected to the car body. The drive wheel assembly, steering wheel assembly, and mobile power supply are all located at the bottom of the car body. The drive wheel assembly is located near the rear end of the car body and is fixedly connected to the car body. The steering wheel assembly is located near the front end of the car body and is fixedly connected to the car body. The mobile power supply is located between the drive wheel assembly and the steering wheel assembly and is detachably connected to the car body. The drive wheel assembly provides power for the movement of the electric flatcar, the steering wheel assembly is used to adjust the direction of movement of the electric flatcar, and the mobile power supply provides power to the drive wheel assembly and the steering wheel assembly.

[0006] Furthermore, a strip steel embedded U-shaped channel is machined at the rear end of the vehicle body along the length of the vehicle body. The open end of the strip steel embedded U-shaped channel is connected to the rear end of the vehicle body, and the closed end of the strip steel embedded U-shaped channel faces the front end of the vehicle body. A first support ramp is provided on the closed end of the strip steel embedded U-shaped channel. The top of the first support ramp is located near the front end of the vehicle body, and the bottom end of the first support ramp is located near the rear end of the vehicle body. A power supply fixing seat is provided at the bottom of the vehicle body. The power supply fixing seat is fixedly connected to the vehicle body and is used to install a mobile power supply. The strip steel embedded U-shaped channel is used to accommodate the strip steel parts to be transported. The strip steel embedded U-shaped channel limits the strip steel parts on both sides through the two side channels. The strip steel embedded U-shaped channel provides transport support, front and rear limit, and longitudinal limit for the strip steel parts through the cooperation of the first support ramp and the limiting unit.

[0007] Furthermore, the limiting unit includes a tail limiting crossarm and two locking pins. The tail limiting crossarm is embedded in the open end of the U-shaped groove of the strip steel and is detachably connected to the vehicle body through the two locking pins. The side of the tail limiting crossarm facing the closed end of the U-shaped groove of the strip steel is fixed to the No. 2 support ramp. The top of the No. 2 support ramp is set near the rear end of the vehicle body, and the bottom end of the No. 2 support ramp is set near the front end of the vehicle body. The No. 2 support ramp and the No. 1 support ramp cooperate to realize the transportation support of the strip steel parts.

[0008] Furthermore, the drive wheel assembly includes two drive wheel units, which are symmetrically arranged at the bottom of the vehicle body along the centerline of the vehicle body width direction. Each drive wheel unit includes a drive wheel and a drive motor. The drive motor is mounted on the bottom of the vehicle body through a motor mounting bracket, and the power output shaft of each drive motor is set towards the outside of the water body. The power input terminal of each drive motor is connected to the power output terminal of the mobile power supply through a wire. The drive wheel is mounted on the power output shaft of the drive motor and rolls back and forth under the drive of the drive motor.

[0009] Furthermore, the steering wheel assembly includes a steering wheel unit and a steering drive unit. The steering wheel unit and the steering drive unit are fixedly installed at the bottom of the vehicle body. The steering wheel unit is located near the front end of the vehicle body, and the steering drive unit is located between the steering wheel unit and the mobile power supply. The movable end of the steering drive unit is hinged to the steering wheel unit. The steering drive unit is used to adjust the working angle of the steering wheel unit and thus adjust the moving direction of the electric flatbed cart.

[0010] Furthermore, the steering wheel unit includes an axle, a turntable, a first hinge seat, and two steering wheels. The housing of the turntable is fixedly installed at the bottom of the vehicle body, and the rotating end of the turntable is vertically downward. A connecting rod perpendicular to the axis of the axle is provided at the center of the outer circular wall of the axle. The axle is detachably connected to the rotating end of the turntable through the connecting rod. The two steering wheels are respectively sleeved on both ends of the axle, and each steering wheel is rotatably connected to the axle. The first hinge seat is located on the side of the axle facing the mobile power source, and the first hinge seat is fixedly connected to the outer circular wall of the axle. The first hinge seat is hinged to the movable end of the steering drive unit.

[0011] Furthermore, the steering wheel unit includes an axle, a turntable, a first hinge seat, and two steering wheels. The housing of the turntable is fixedly installed at the bottom of the vehicle body, and the rotating end of the turntable is vertically downward. A connecting rod perpendicular to the axis of the axle is provided at the center of the outer circular wall of the axle. The axle is detachably connected to the rotating end of the turntable through the connecting rod. The two steering wheels are respectively sleeved on both ends of the axle, and each steering wheel is rotatably connected to the axle. The first hinge seat is located on the side of the axle facing the mobile power source, and the first hinge seat is fixedly connected to the outer circular wall of the axle. The first hinge seat is hinged to the movable end of the steering drive unit.

[0012] Furthermore, the steering wheel assembly also includes two limit switches. The two limit switches are symmetrically fixed at the bottom of the vehicle body along the centerline of the vehicle body width direction, and both limit switches are set near the long side of the vehicle body. The control end of each limit switch is connected to the control end of the oil supply pump group in the hydraulic oil tank through a wire. The two limit switches are set to cooperate with the wheel axle. The limit switches are used to limit the maximum deflection angle of the wheel axle.

[0013] The beneficial effects of this application compared to the prior art are:

[0014] This application provides an electric flatcar for transporting strip steel. By optimizing the structural design of the car body, the transportation convenience of strip steel parts is improved. A U-shaped trough is machined at the rear of the car body to hold the strip steel, and a limiting crossbeam is set at the open end of the U-shaped trough. The limiting crossbeam limits and constrains the strip steel, ensuring that the strip steel stands upright in the U-shaped trough. Support ramps for supporting the strip steel are provided at the closed end of the U-shaped trough and on the limiting crossbeam. Both support ramps are in contact with the outer circumference of the strip steel. The support ramps provide support and front and rear limiting constraints for the strip steel, which helps to improve the stability of strip steel transportation.

[0015] This application provides an electric flatcar for transporting steel strips. It utilizes a hydraulic push rod and a turntable to control the car's rotation. The extension and retraction of the hydraulic push rod drives the rotating wheel axle to rotate left or right on the turntable, thus achieving the overall left-right rotation of the electric flatcar. To limit the maximum rotation range of the steering wheel and prevent excessive rotation angles from affecting the normal operation of the electric flatcar, this application also includes a limit switch on each of the left and right sides of the car's bottom. Both limit switches are connected to the control terminal of the oil supply pump unit in the hydraulic oil tank via wires. The two limit switches respectively constrain the maximum working angle of the rotating wheel axle to the left or right. Once the rotation angle reaches the critical value, the oil supply pump unit in the hydraulic oil tank will stop supplying oil, allowing the hydraulic push rod to continue in this state to complete the steering action. The motion steering structure provided in this application is superior to the traditional electric flatcar's rotation structure in terms of steering flexibility and safety, making it more suitable for workpiece transfer within the factory area.

[0016] This application provides an electric flatcar for transporting strip steel, whose body surface maintains a horizontal plane design. In addition to transporting strip steel, it can also be used to transport other workpieces, thus improving the versatility of the electric flatcar. Attached Figure Description

[0017] Figure 1 This is an axonometric view of the electric flatcar described in this application;

[0018] Figure 2 This is a front view schematic diagram of the electric flatbed cart described in this application;

[0019] Figure 3 This is a top view of the electric flatbed cart described in this application;

[0020] Figure 4 This is a right-side view of the electric flatbed cart described in this application;

[0021] Figure 5 This is a bottom view of the electric flatbed cart described in this application;

[0022] The diagram shows: 1. Vehicle body, 1-1. U-shaped channel, 1-2. Support ramp 1, 1-3. Power supply mounting base, 2. Rear limit crossarm, 2-1. Support ramp 2, 3. Locking pin, 4. Drive wheel assembly, 4-1. Drive wheel, 4-2. Drive motor, 5. Steering wheel assembly, 5-1. Steering wheel, 5-2. Axle, 5-3. Turntable, 5-4. Hinge 1, 5-5. Hinge 2, 5-6. Hydraulic push rod, 5-7. Hydraulic oil tank, 5-8. Limit switch, and 6. Mobile power supply. Detailed Implementation

[0023] Specific implementation method one: Combining Figures 1 to 5This embodiment describes an electric flatcar for transporting steel strips. The electric flatcar includes a car body 1, a limiting unit, a drive wheel assembly 4, a steering wheel assembly 5, and a mobile power supply 6. The limiting unit is located at the rear end of the car body 1 and is detachably connected to the car body 1. The drive wheel assembly 4, the steering wheel assembly 5, and the mobile power supply 6 are all located at the bottom of the car body 1. The drive wheel assembly 4 is located near the rear end of the car body 1 and is fixedly connected to the car body 1. The steering wheel assembly 5 is located near the front end of the car body 1 and is fixedly connected to the car body 1. The mobile power supply 6 is located between the drive wheel assembly 4 and the steering wheel assembly 5 and is detachably connected to the car body 1. The drive wheel assembly 4 provides power for the movement of the electric flatcar, the steering wheel assembly 5 is used to adjust the direction of movement of the electric flatcar, and the mobile power supply 6 provides power to the drive wheel assembly 4 and the steering wheel assembly 5.

[0024] In this embodiment, the electric flatcar cooperates with the car body 1 through a limiting unit to ensure the stability of the strip steel during transportation. In order to ensure the power and range of the electric flatcar, the mobile power supply 6 is selected as a 400Ah power battery. The control panel of the electric flatcar is arranged in the same position as that of a traditional electric flatcar, and is located on the side of the electric flatcar. It includes a main switch, a forward button and a reverse button. The forward button and the reverse button are connected to the control terminal of the drive wheel assembly 4 through wires to control the rotation direction of the drive wheel. It also includes a left turn button and a right turn button. The left turn button and the right turn button are connected to the control terminal of the steering wheel assembly 5 through wires to control the rotation direction of the steering wheel.

[0025] Specific Implementation Method Two: Combining Figures 1 to 5 This embodiment differs from specific embodiment one in that a steel strip U-shaped groove 1-1 is machined at the rear end of the vehicle body 1 along the length of the vehicle body. The open end of the steel strip U-shaped groove 1-1 is connected to the rear end of the vehicle body 1, and the closed end of the steel strip U-shaped groove 1-1 faces the front end of the vehicle body 1. A first support ramp 1-2 is provided on the closed end of the steel strip U-shaped groove 1-1, and the top of the first support ramp 1-2 is located near the front end of the vehicle body 1. The bottom end is located near the rear end of the vehicle body 1. A power supply mounting base 1-3 is provided at the bottom of the vehicle body 1, and is fixedly connected to the vehicle body 1. The power supply mounting base 1-3 is used to install a mobile power supply 6. A strip steel embedded U-shaped channel 1-1 is used to accommodate the strip steel parts to be transported. The strip steel embedded U-shaped channel 1-1 limits the strip steel parts on both sides through its side walls. The strip steel embedded U-shaped channel 1-1, in conjunction with the first support ramp 1-2 and the limiting unit, provides transport support, front and rear limiting, and longitudinal limiting for the strip steel parts. Other components and connection methods are the same as in specific embodiment one.

[0026] In this embodiment, the design of the U-shaped groove 1-1 and the first support ramp 1-2, in conjunction with the limiting unit, allows the steel ring to be embedded in the car body 1 during transportation, ensuring that its axis is horizontally aligned with the top surface of the car body 1. Compared to the traditional method of contacting the end face of the steel ring with the bearing surface of the car body 1, this design facilitates lifting. Many existing electric flatbed carts also have detachable limiting structures on the car body surface to adjust the transportation position of the steel ring during steel strip transportation. These limiting structures not only increase the weight of the car body and consume transportation energy, but also have relatively high manufacturing costs. This application, however, optimizes the car body structure by machining limiting grooves on the car body 1. This method provides space for the steel ring components, which not only reduces the weight of the vehicle body and increases its carrying capacity, but also has a relatively low manufacturing cost, making it more suitable for widespread use. The power supply mounting base 1-3 is welded to the bottom of the vehicle body 1, and a shock-absorbing rubber pad (10mm thick) is reserved in the power supply mounting base 1-3. The shock-absorbing rubber pad is fixed to the power supply mounting base 1-3 with bolts. At the same time, multiple U-shaped clip frames are also set on the power supply mounting base 1-3. The U-shaped clip frames are detachably connected to the power supply mounting base 1-3 to fix the mobile power supply 6. Shock-absorbing rubber pads are also set on the inner side of the U-shaped clip frames. The shock-absorbing rubber pads are used to buffer the mobile power supply 6, thereby ensuring the stability of the mobile power supply 6 during operation.

[0027] Specific implementation method three: Combining Figures 1 to 5 This embodiment differs from Specific Embodiment Two in that the limiting unit includes a tail limiting crossarm 2 and two locking pins 3. The tail limiting crossarm 2 is embedded in the open end of the strip steel embedded U-shaped groove 1-1 and is detachably connected to the vehicle body 1 via the two locking pins 3. A second support ramp 2-1 is fixed to the side of the tail limiting crossarm 2 facing the closed end of the strip steel embedded U-shaped groove 1-1. The top of the second support ramp 2-1 is positioned near the rear end of the vehicle body 1, and the bottom end of the first support ramp 1-2 is positioned near the front end of the vehicle body 1. The second support ramp 2-1 and the first support ramp 1-2 cooperate to provide transport support for the strip steel parts. Other components and connection methods are the same as in Specific Embodiment Two.

[0028] In this embodiment, the tail limiting crossarm 2 is used to cooperate with the U-shaped groove 1-1 to constrain the installation range of the steel ring component. The second support ramp 2-1 and the first support ramp 1-2 cooperate to form a support structure for the steel ring component, ensuring the arrangement stability of the steel ring component. In actual operation, multiple locking pin 3 limiting points can be set on the vehicle body to adjust the installation position of the tail limiting crossarm 2, that is, the distance between the tail limiting crossarm 2 and the closed end of the U-shaped groove 1-1. The advantage of this design is that the working length of the U-shaped groove 1-1 can be adjusted according to the end face diameter of different steel ring components to facilitate the transportation of steel ring components of different sizes.

[0029] Specific implementation method four: Combination Figures 1 to 5 This embodiment differs from Specific Embodiment Three in that the drive wheel assembly includes two drive wheel units symmetrically arranged at the bottom of the vehicle body 1 along the centerline of the vehicle body width direction. Each drive wheel unit includes a drive wheel 4-1 and a drive motor 4-2. The drive motor 4-2 is mounted on the bottom of the vehicle body 1 via a motor mounting bracket, and the power output shaft of each drive motor 4-2 faces outwards from the water body. The power input terminal of each drive motor 4-2 is connected to the power output terminal of the mobile power supply 6 via a wire. The drive wheel 4-1 is mounted on the power output shaft of the drive motor 4-2 and rolls back and forth under the drive of the drive motor 4-2. Other components and connections are the same as in Specific Embodiment Three.

[0030] In this embodiment, the drive motor 4-2 is a DC48V bidirectional motor that can provide two working modes for the electric flatbed cart: forward and backward, thus improving the working flexibility of the electric flatbed cart.

[0031] Specific Implementation Method Five: Combining Figures 1 to 5 This embodiment differs from Specific Embodiment Four in that the steering wheel assembly 5 includes a steering wheel unit and a steering drive unit. The steering wheel unit and steering drive unit are fixedly mounted on the bottom of the vehicle body 1, with the steering wheel unit positioned near the front end of the vehicle body. The steering drive unit is positioned between the steering wheel unit and the mobile power supply 6, with its movable end hinged to the steering wheel unit. The steering drive unit is used to adjust the working angle of the steering wheel unit, thereby adjusting the direction of movement of the electric flatbed cart. Other components and connections are the same as in Specific Embodiment Four.

[0032] Specific Implementation Method Six: Combination Figures 1 to 5 This embodiment differs from specific embodiment five in that the steering wheel unit includes an axle 5-2, a turntable 5-3, a first hinge seat 5-4, and two steering wheels 5-1. The housing of the turntable 5-3 is fixedly installed at the bottom of the vehicle body 1-1, and the rotating end of the turntable 5-3 is vertically downward. A connecting rod perpendicular to the axis of the axle 5-2 is provided at the center of the outer circular wall of the axle 5-2. The axle 5-2 is detachably connected to the rotating end of the turntable 5-3 through the connecting rod. The two steering wheels 5-1 are respectively sleeved on both ends of the axle 5-2, and each steering wheel 5-1 is rotatably connected to the axle 5-2. The first hinge seat 5-4 is located on the side of the axle 5-2 facing the mobile power supply 6, and the first hinge seat 5-4 is fixedly connected to the outer circular wall of the axle 5-2. The first hinge seat 5-4 is hinged to the movable end of the steering drive unit. Other components and connection methods are the same as in specific embodiment five.

[0033] Specific implementation method seven: Combination Figures 1 to 5This embodiment differs from specific embodiment six in that the steering drive unit includes a second hinge seat 5-5, a hydraulic push rod 5-6, and a hydraulic oil tank 5-7. The second hinge seat 5-5 is fixed to the edge of the bottom of the vehicle body 1. The hydraulic push rod 5-6 is positioned between the first hinge seat 5-4 and the second hinge seat 5-5, with the cylinder of the hydraulic push rod 5-6 hinged to the second hinge seat 5-5 and the piston rod end of the hydraulic push rod 5-6 hinged to the first hinge seat 5-4. The hydraulic oil tank 5-7 is fixed to the bottom of the vehicle body 1 and integrates an oil supply pump assembly. The hydraulic oil tank 5-7 is connected to the rod-side and rodless-side chambers of the hydraulic push rod 5-6 via the oil supply pump assembly and conduits. Other components and connections are the same as in specific embodiment six.

[0034] Specific implementation method eight: Combination Figures 1 to 5 This embodiment differs from specific embodiment seven in that the steering wheel assembly 5 also includes two limit switches 5-8. These two limit switches 5-8 are symmetrically fixed to the bottom of the vehicle body 1 along the centerline of the vehicle body width direction, and are positioned near the long side of the vehicle body 1. The control terminal of each limit switch 5-8 is connected to the control terminal of the oil supply pump assembly in the hydraulic oil tank 5-7 via a wire. The two limit switches 5-8 are correspondingly matched with the wheel axle 5-2, and are used to limit the maximum deflection angle of the wheel axle 5-2. Other components and connections are the same as in specific embodiment seven.

[0035] As described in Specific Embodiments 5 to 8, the steering wheel assembly 5 is an important component that determines the direction of movement of the electric flatcar. The first hinge seat 5-4 and the second hinge seat 5-5 are respectively located near the two sides of the car body 1. That is, if the second hinge seat 5-5 is located on the left side of the car body, the first hinge seat 5-4 is located near the right end of the wheel axle 5-2. If the second hinge seat 5-5 is located on the right side of the car body, the first hinge seat 5-4 is located near the left end of the wheel axle 5-2. When the axis of the wheel axle 5-2 is parallel to the axis of the drive wheel 4-1, the piston rod in the hydraulic push rod 5-6 is in a half-extended state. When turning is required, the oil supply pump group switches the oil in the rod chamber and the rodless chamber of the hydraulic push rod 5-6 to control the extension and retraction of the hydraulic push rod 5-6, thereby controlling the left or right turn of the electric flatcar.

[0036] Based on this, two limit switches 5-8 are set to constrain the maximum deflection angle of the electric flatcar. In order to make the wheel axle 5-2 and the limit switch 5-8 fit more tightly, a rectangular frame is set at each end of the wheel axle 5-2. The rectangular frame is connected to the end of the wheel axle 5-2 by bolts. The rectangular frame is wrapped around the outside of the steering wheel 5-1 and does not affect the normal rotation of the steering wheel 5-1. When the wheel axle 5-2 is rotating, when the rectangular frame at both ends of the wheel axle 5-2 contacts the corresponding limit switch 5-8 and triggers the limit switch 5-8, it means that the unidirectional rotation of the wheel axle 5-2 has reached the limit position. Under the intervention of the limit switch 5-8, the oil supply pump group in the hydraulic oil tank will stop supplying oil and make the hydraulic push rod continue to complete the steering action in this state.

[0037] The present invention has been disclosed above with reference to preferred embodiments, but it is not intended to limit the present invention. Any person skilled in the art can make some modifications or alterations to the above-disclosed structure and technical content to create equivalent embodiments without departing from the scope of the present invention. However, any simple modifications, equivalent changes and alterations made to the above embodiments based on the technical essence of the present invention without departing from the scope of the present invention shall still fall within the scope of the present invention.

[0038] Working principle

[0039] In operation, the various components are first assembled according to the connection relationships described in Embodiments 1 to 8. The steel ring component to be transported is then lifted by a crane into the U-shaped groove 1-1 on the top of the vehicle body 1, and the outer surface of the steel ring component is brought into contact with the first support ramp 1-2 and the second support ramp 2-1. The first support ramp 1-2 and the second support ramp 2-1 form a support for the steel ring component. At the same time, the closed frame formed by the U-shaped groove 1-1 and the tail limiting crossbeam 2 limits the circumference of the steel ring component to ensure its stability during transportation. After the steel ring component is arranged, the electric flatcar is driven forward to move towards the target area. If a turn is required during the movement, the wheel axle 5-2 is driven to rotate left or right by controlling the extension and retraction of the hydraulic push rod 5-6. After transportation to the destination, the steel ring component is lifted from the U-shaped groove 1-1 to the placement area by a crane.

Claims

1. An electric flatcar for transporting steel strips, characterized in that: The electric flatbed cart includes a body (1), a limiting unit, a drive wheel assembly (4), a steering wheel assembly (5), and a mobile power supply (6). The limiting unit is located at the rear end of the body (1) and is detachably connected to the body (1). The drive wheel assembly (4), the steering wheel assembly (5), and the mobile power supply (6) are all located at the bottom of the body (1). The drive wheel assembly (4) is located near the rear end of the body (1) and is fixedly connected to the body (1). The steering wheel assembly (5) is located near the front end of the body (1) and is fixedly connected to the body (1). The mobile power supply (6) is located between the drive wheel assembly (4) and the steering wheel assembly (5) and is detachably connected to the body (1). The drive wheel assembly (4) is used to provide power for the movement of the electric flatbed cart. The steering wheel assembly (5) is used to adjust the direction of movement of the electric flatbed cart. The mobile power supply (6) is used to supply power to the drive wheel assembly (4) and the steering wheel assembly (5).

2. The electric flatcar for transporting steel strips according to claim 1, characterized in that: A steel-embedded U-shaped groove (1-1) is machined at the rear end of the vehicle body (1) along the length of the vehicle body. The open end of the steel-embedded U-shaped groove (1-1) is connected to the rear end of the vehicle body (1). The closed end of the steel-embedded U-shaped groove (1-1) faces the front end of the vehicle body (1). A first support ramp (1-2) is provided on the closed end of the steel-embedded U-shaped groove (1-1). The top of the first support ramp (1-2) is located near the front end of the vehicle body (1), and the bottom end of the first support ramp (1-2) is located near the rear end of the vehicle body (1). The bottom of the vehicle body (1) is provided with a power supply fixing seat (1-3), which is fixedly connected to the vehicle body (1). The power supply fixing seat (1-3) is used to install a mobile power supply (6). The strip steel embedded U-shaped channel (1-1) is used to accommodate the strip steel parts to be transported. The strip steel embedded U-shaped channel (1-1) limits the strip steel parts on both sides through the side channel walls. The strip steel embedded U-shaped channel (1-1) provides transportation support, front and rear limit and longitudinal limit for the strip steel parts through the cooperation of the No. 1 support ramp (1-2) and the limit unit.

3. An electric flatcar for transporting steel strips according to claim 1, characterized in that: The limiting unit includes a tail limiting crossarm (2) and two locking pins (3). The tail limiting crossarm (2) is embedded in the open end of the strip steel embedded U-shaped groove (1-1) and is detachably connected to the vehicle body (1) through the two locking pins (3). The tail limiting crossarm (2) is fixed to the second support ramp (2-1) on the side facing the closed end of the strip steel embedded U-shaped groove (1-1). The top of the second support ramp (2-1) is set near the tail end of the vehicle body (1), and the bottom end of the first support ramp (1-2) is set near the front end of the vehicle body (1). The second support ramp (2-1) and the first support ramp (1-2) cooperate to realize the transportation support of the strip steel parts.

4. An electric flatcar for transporting steel strips according to claim 3, characterized in that: The drive wheel assembly includes two drive wheel units, which are symmetrically arranged at the bottom of the vehicle body (1) along the center line of the vehicle body width direction. Each drive wheel unit includes a drive wheel (4-1) and a drive motor (4-2). The drive motor (4-2) is mounted on the bottom of the vehicle body (1) through a motor mounting bracket, and the power output shaft of each drive motor (4-2) is arranged facing the outside of the vehicle body. The power input terminal of each drive motor (4-2) is connected to the power output terminal of the mobile power supply (6) through a wire. The drive wheel (4-1) is mounted on the power output shaft of the drive motor (4-2) and rolls back and forth under the drive of the drive motor (4-2).

5. An electric flatcar for transporting steel strips according to claim 4, characterized in that: The steering wheel assembly (5) includes a steering wheel unit and a steering drive unit. The steering wheel unit and the steering drive unit are fixedly installed at the bottom of the vehicle body (1). The steering wheel unit is located near the front end of the vehicle body. The steering drive unit is located between the steering wheel unit and the mobile power supply (6). The movable end of the steering drive unit is hinged to the steering wheel unit. The steering drive unit is used to adjust the working angle of the steering wheel unit and thus adjust the moving direction of the electric flatcar.

6. An electric flatcar for transporting steel strips according to claim 5, characterized in that: The steering wheel unit includes an axle (5-2), a turntable (5-3), a first hinge seat (5-4), and two steering wheels (5-1). The housing of the turntable (5-3) is fixedly installed at the bottom of the vehicle body (1), and the rotating end of the turntable (5-3) is set vertically downward. A connecting rod is provided at the center of the outer circular wall of the axle (5-2) perpendicular to the axis of the axle (5-2). The axle (5-2) is detachably connected to the rotating end of the turntable (5-3) through the connecting rod. The two steering wheels (5-1) are respectively sleeved on both ends of the axle (5-2), and each steering wheel (5-1) is rotatably connected to the axle (5-2). The first hinge seat (5-4) is set on the side of the axle (5-2) facing the mobile power supply (6), and the first hinge seat (5-4) is fixedly connected to the outer circular wall of the axle (5-2). The first hinge seat (5-4) is hinged to the movable end of the steering drive unit.

7. An electric flatcar for transporting steel strips according to claim 6, characterized in that: The steering drive unit includes a second hinge seat (5-5), a hydraulic push rod (5-6), and a hydraulic oil tank (5-7). The second hinge seat (5-5) is fixed at the edge of the bottom of the vehicle body (1). The hydraulic push rod (5-6) is located between the first hinge seat (5-4) and the second hinge seat (5-5). The cylinder of the hydraulic push rod (5-6) is hinged to the second hinge seat (5-5), and the piston rod end of the hydraulic push rod (5-6) is hinged to the first hinge seat (5-4). The hydraulic oil tank (5-7) is fixed to the bottom of the vehicle body (1). The hydraulic oil tank (5-7) integrates an oil supply pump group. The hydraulic oil tank (5-7) is connected to the rod chamber and rodless chamber of the hydraulic push rod (5-6) through the oil supply pump group and the conduit.

8. An electric flatcar for transporting steel strips according to claim 7, characterized in that: The steering wheel assembly (5) also includes two limit switches (5-8). The two limit switches (5-8) are symmetrically fixed at the bottom of the vehicle body (1) along the center line of the vehicle body width direction, and both limit switches (5-8) are set close to the long side of the vehicle body (1). The control end of each limit switch (5-8) is connected to the control end of the oil supply pump group in the hydraulic oil tank (5-7) through a wire. The two limit switches (5-8) are set in correspondence with the wheel axle (5-2). The limit switches (5-8) are used to limit the maximum deflection angle of the wheel axle (5-2).

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