Barrier-free step-climbing structure of battery car

Abstract

The utility model relates to the barrier-free technical field of battery cars, and discloses a barrier-free upper step structure of a battery car, which comprises a chassis, an electric push rod I is fixedly sleeved in the middle of the chassis, and a front lifting plate is fixedly mounted at the telescopic end of the electric push rod I and positioned under the chassis; the bottom of the front lifting plate is evenly and movably connected with swing plates through shafts, a first motor is fixedly installed between the two swing plates, an output shaft of the first motor is fixedly sleeved with a first gear, the outer edge of the first gear is meshed with a second gear, and the middle of the second gear is fixedly sleeved with a first rotating shaft. The first rotating shaft is movably connected between the two swing plates in a sleeved mode, the middle of the first rotating shaft is fixedly connected with a first transmission roller in a sleeved mode, the electric push rod drives the auxiliary wheel to make contact with the ground, the battery car is made to ascend, then the motor is used for driving the auxiliary wheel, the battery car moves to achieve barrier-free passing, and the traffic capacity of the battery car is improved; convenience is provided for the old with disabled legs and disabled people to go out.

Description

Technical Field

[0001] The utility model relates to the technical field of barrier-free electric vehicles, in particular to a barrier-free step-up structure for an electric vehicle. Background Art

[0002] The elderly electric vehicle is an ideal vehicle for the elderly to travel outdoors. It is also called an elderly vehicle, an elderly scooter, or an elderly tricycle. Its performance is relatively stable, the speed is slow, and it uses electricity without refueling, so it is also called an environmentally friendly elderly vehicle. There are many energy sources used in elderly electric vehicles, mainly lead-acid batteries, nickel-metal hydride batteries, nickel-cadmium batteries, nickel-iron batteries, lithium batteries, fuel cells, etc. The fuel cell isothermally converts chemical energy into electrical energy directly in an electrochemical manner. The elderly electric vehicle provides great convenience for the travel of the elderly.

[0003] In the prior art, when an electric vehicle faces a step, due to the fact that the wheel diameter is much smaller than the step height, the passing ability of the electric vehicle is affected, and it needs to be carried manually. When the self-weight of the electric vehicle is large, the labor intensity of the user is greatly increased, which is not conducive to the use of the elderly and disabled with inconvenient legs and feet. Therefore, to solve the above problems, the utility model proposes a barrier-free step-up structure for an electric vehicle. Content of the Utility Model

[0004] Aiming at the deficiencies of the prior art, the utility model provides a barrier-free step-up structure for an electric vehicle. The electric push rod I and the electric push rod II drive two auxiliary wheels to contact the ground, and the electric vehicle is lifted. After rising to the same height as the step, the auxiliary wheels are driven by a motor to make the electric vehicle move onto the step, so as to achieve barrier-free passage, improve the passing ability of the electric vehicle, and provide convenience for the travel of the elderly and disabled with inconvenient legs and feet.

[0005] The utility model provides the following technical solution: a barrier-free step-up structure for a battery car, including a chassis. A first electric push rod is fixedly sleeved in the middle of the chassis. The telescopic end of the first electric push rod is fixedly installed with a front lifting plate directly below the chassis. The bottom of the front lifting plate is evenly and movably connected with swing plates through shafts. The number of swing plates is eight, and they are grouped in pairs. A first motor is fixedly installed between two swing plates in the same group. A first gear is fixedly sleeved on the output shaft of the first motor. The outer extension of the first gear meshes with a second gear. A first rotating shaft is fixedly sleeved in the middle of the second gear. The first rotating shaft is movably sleeved between two swing plates. A first transmission roller is fixedly sleeved in the middle of the first rotating shaft. A transmission toothed belt is meshed with the outer extension of the first transmission roller. The other end of the transmission toothed belt is meshed with a second transmission roller. A second rotating shaft is fixedly sleeved in the middle of the second transmission roller. The second rotating shaft is movably sleeved between two swing plates. On the second rotating shaft and on the left and right sides of the second transmission roller, a first auxiliary wheel is fixedly sleeved respectively. By driving the front lifting plate to move downward through the telescopic end of the first electric push rod and using the first motor to drive the transmission mechanism, the first auxiliary wheel rotates, so as to realize the movement of the battery car onto the steps and enhance the practicability of the battery car.

[0006] Preferably, the bottom of the front lifting plate is evenly and movably connected with hydraulic rods through shafts. The number of hydraulic rods is eight, and they are grouped in pairs. A connecting rod is movably connected between the telescopic ends of two hydraulic rods in the same group. The connecting rod is fixedly sleeved between two swing plates in the same group. By making the telescopic end of the hydraulic rod drive the swing plate to rotate downward through the connecting rod, the first auxiliary wheel contacts the ground and supports the battery car to rise, so as to improve the passing ability of the battery car.

[0007] Preferably, two slide rails are fixedly installed at the rear of the chassis, and the two slide rails are symmetrically distributed left and right. A slider is movably connected to the slide rail. A rear lifting plate is fixedly installed between the two sliders. A cover plate is fixedly installed between the tops of the two slide rails. Since the sliders on both sides of the rear lifting plate are movably connected to the slide rail, the rear lifting plate descends along the slide rail, enhancing the stability during descent.

[0008] Preferably, two second electric push rods are fixedly installed at the bottom of the cover plate, and the two second electric push rods are symmetrically distributed left and right. The telescopic end of the second electric push rod is fixedly installed on the rear lifting plate. Two second motors are fixedly installed in the left and right parts of the inner cavity of the rear lifting plate respectively. The output shaft of the second motor is movably sleeved with the rear lifting plate. On the output shaft of the second motor and on the left and right sides of the rear lifting plate, a second auxiliary wheel is fixedly sleeved respectively. By driving the rear lifting plate to move through the second electric push rod, the second auxiliary wheel contacts the ground, and the second motor drives the second auxiliary wheel to rotate at the same time, reducing the risk of the battery car tipping over when passing the steps without obstacles, which is beneficial to enhancing the structural safety.

[0009] Preferably, the bottom of the chassis is evenly and movably sleeved with rollers through shafts. The number of the rollers is four. The front part of the chassis is movably connected with a driving rod through a shaft. A steering wheel is fixedly installed at the top of the driving rod. Lighting lamps are fixedly installed on the left and right sides of the front part of the chassis and located on both sides of the driving rod. A seat is fixedly installed on the chassis and directly behind the first electric push rod. The user sits on the seat and starts and drives the battery car through the steering wheel. The battery car is flexibly moved by the rotation of the rollers.

[0010] Compared with the prior art, the utility model has the following beneficial effects:

[0011] 1. The first electric push rod drives the front lifting plate to descend. At the same time, the telescopic end of the hydraulic rod drives the swing plate to rotate downward, so that the first auxiliary wheel contacts the ground and supports the battery car to rise. After rising to the same height as the step, the first motor is started. The first motor drives the transmission mechanism to make the first auxiliary wheel rotate, so that the battery car moves onto the step. This is beneficial for the battery car to pass through the step without obstacles, enhances the practicability of the battery car, is beneficial to improving the passing ability of the battery car, provides convenience for the travel of the elderly and the disabled with inconvenient legs and feet, and avoids the need for manual handling. When facing a battery car with a large weight, the labor intensity of the user can be effectively reduced.

[0012] 2. The second electric push rod drives the rear lifting plate to descend. Since the sliders on both sides of the rear lifting plate are movably connected to the slide rails, the rear lifting plate descends along the slide rails. After the rear lifting plate descends, the second auxiliary wheel contacts the ground and supports the battery car together with the first auxiliary wheel, preventing the chassis of the battery car from being unevenly stressed when being supported alone, effectively improving the stability of the battery car when rising, reducing the risk of the battery car tipping over when passing through the step without obstacles, being beneficial to enhancing the structural safety, and ensuring the physical and mental safety of the user. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 is a schematic diagram of the external structure of the utility model;

[0014] Figure 2 is a schematic diagram of the bottom structure of the front lifting plate of the utility model;

[0015] Figure 3 is a schematic diagram of the front auxiliary moving structure of the utility model;

[0016] Figure 4 is a top view schematic diagram of the front auxiliary moving structure of the utility model;

[0017] Figure 5 is a schematic diagram of the rear lifting structure of the utility model;

[0018] Figure 6 is a schematic diagram of the sectional structure of the rear lifting plate of the utility model.

[0019] In the figure: 1, chassis; 2, first electric push rod; 3, front lifting plate; 4, swing plate; 5, first motor; 6, first gear; 7, second gear; 8, first rotating shaft; 9, first driving roller; 10, driving toothed belt; 11, second driving roller; 12, second rotating shaft; 13, first auxiliary wheel; 14, hydraulic rod; 15, connecting rod; 16, slide rail; 17, slider; 18, rear lifting plate; 19, cover plate; 20, second electric push rod; 21, second motor; 22, second auxiliary wheel; 23, roller; 24, control lever; 25, steering wheel; 26, lighting lamp; 27, seat. Detailed implementation manners

[0020] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0021] Please refer to Figures 1-6, A barrier-free structure for an electric vehicle to climb steps, including a chassis 1. A first electric push rod 2 is fixedly sleeved in the middle of the chassis 1. A front lifting plate 3 is fixedly installed at the telescopic end of the first electric push rod 2 and directly below the chassis 1. The bottom of the front lifting plate 3 is evenly and movably connected with swing plates 4 through shafts. The number of swing plates 4 is eight, with two in a group. A first motor 5 is fixedly installed between two swing plates 4 in the same group. A first gear 6 is fixedly sleeved on the output shaft of the first motor 5. A second gear 7 is meshed with the outer extension of the first gear 6. A first rotating shaft 8 is fixedly sleeved in the middle of the second gear 7. The first rotating shaft 8 is movably sleeved between two swing plates 4. A first transmission roller 9 is fixedly sleeved in the middle of the first rotating shaft 8. A transmission toothed belt 10 is meshed with the outer extension of the first transmission roller 9. The other end of the transmission toothed belt 10 is meshed with a second transmission roller 11. A second rotating shaft 12 is fixedly sleeved in the middle of the second transmission roller 11. The second rotating shaft 12 is movably sleeved between two swing plates 4. On the second rotating shaft 12, first auxiliary wheels 13 are respectively fixedly sleeved on the left and right parts of the second transmission roller 11. The bottom of the front lifting plate 3 is evenly and movably connected with hydraulic rods 14 through shafts. The number of hydraulic rods 14 is eight, with two in a group. A connecting rod 15 is movably connected between the telescopic ends of two hydraulic rods 14 in the same group. The connecting rod 15 is fixedly sleeved between two swing plates 4 in the same group. When facing a step, first stop the electric vehicle in front of the step. Drive the front lifting plate 3 to move downward through the telescopic end of the first electric push rod 2. At the same time, start the hydraulic rods 14 so that their telescopic ends drive the swing plates 4 to rotate downward through the connecting rod 15, making the first auxiliary wheels 13 contact the ground and support the electric vehicle to rise. After rising to the same height as the step, start the first motor 5. The first motor 5 drives the first gear 6 to rotate. The first gear 6 drives the second gear 7 to rotate. The second gear 7 drives the first transmission roller 9 through the first rotating shaft 8. The first transmission roller 9 drives the second transmission roller 11 through the transmission toothed belt 10. The second transmission roller 11 drives the first auxiliary wheels 13 to rotate through the second rotating shaft 12, making the electric vehicle move onto the step. This is beneficial for the electric vehicle to pass through the step without obstacles, enhances the practicality of the electric vehicle, improves the passing ability of the electric vehicle, provides convenience for the travel of the elderly and disabled with inconvenient legs and feet, and avoids the need for manual handling. When facing an electric vehicle with a large weight, it can effectively reduce the labor intensity of the accompanying personnel of the user;

[0022] At the rear of the chassis 1, a slide rail 16 is fixedly installed. The number of slide rails 16 is two and they are symmetrically distributed left and right. A slider 17 is movably connected to the slide rail 16. A rear lifting plate 18 is fixedly installed between the two sliders 17. A cover plate 19 is fixedly installed between the tops of the two slide rails 16. At the bottom of the cover plate 19, two electric push rods 20 are fixedly installed and they are symmetrically distributed left and right. The telescopic ends of the electric push rods 20 are fixedly installed on the rear lifting plate 18. On the left and right sides of the inner cavity of the rear lifting plate 18, a second motor 21 is fixedly installed respectively. The output shaft of the second motor 21 is movably sleeved with the rear lifting plate 18. On the output shaft of the second motor 21 and on the left and right sides of the rear lifting plate 18, a second auxiliary wheel 22 is fixedly sleeved. The bottom of the chassis 1 is evenly movably sleeved with rollers 23 through shafts. The number of rollers 23 is four. At the front of the chassis 1, a steering rod 24 is movably connected through a shaft. A steering wheel 25 is fixedly installed at the top of the steering rod 24. At the front of the chassis 1 and on the left and right sides of the steering rod 24, a lighting lamp 26 is fixedly installed respectively. A seat 27 is fixedly installed on the chassis 1 and directly behind the first electric push rod 2. The user sits on the seat 27 and starts and drives the battery car through the steering wheel 25. The rotation of the rollers 23 drives the battery car to move flexibly. While the first auxiliary wheel 13 supports the battery car, the electric push rod 20 is started so that its telescopic end drives the rear lifting plate 18 to move. Since the sliders 17 on both sides of the rear lifting plate 18 are movably connected to the slide rail 16, the rear lifting plate 18 descends along the slide rail 16. After the rear lifting plate 18 descends, the second auxiliary wheel 22 contacts the ground and, together with the first auxiliary wheel 13, supports the battery car, preventing the chassis 1 of the battery car from being unevenly stressed when supported alone, effectively improving the stability of the battery car when ascending, reducing the risk of the battery car tipping over when passing through a step without obstacles, being beneficial to enhancing the structural safety, and providing guarantee for the physical and mental safety of the user.

[0023] Working principle: The user sits on the seat 27 and starts and drives the battery car through the steering wheel 25. The battery car is driven to move flexibly by the rotation of the roller 23. When facing a step, the battery car is first stopped in front of the step. The electric push rod 1 is controlled by the steering wheel 25 to start, and its telescopic end drives the front lifting plate 3 to move downward. At the same time, the hydraulic rod 14 is started, and its telescopic end drives the swing plate 4 to rotate downward through the connecting rod 15, so that the auxiliary wheel 13 touches the ground. Then the electric push rod 20 is started, and its telescopic end drives the rear lifting plate 18 to move. Since the sliders 17 on both sides of the rear lifting plate 18 are movably connected to the slide rail 16, the rear lifting plate 18 descends along the slide rail 16. After the rear lifting plate 18 descends, the auxiliary wheel 22 touches the ground. The battery car is lifted by the cooperation of the auxiliary wheel 13 and the auxiliary wheel 22. After the battery car is lifted to an appropriate position, the motor 1 5 and the motor 2 21 are started. The motor 1 5 drives the gear 1 6 to rotate, the gear 1 6 drives the gear 2 7 to rotate, the gear 2 7 drives the transmission roller 1 9 through the rotating shaft 1 8, the transmission roller 1 9 drives the transmission roller 2 11 through the transmission belt 10, and the transmission roller 2 11 drives the auxiliary wheel 13 to rotate through the rotating shaft 2 12. The motor 2 21 drives the auxiliary wheel 22 to rotate at the same time. The two cooperate to move the battery car to the upper part of the step. When the front roller 23 of the battery car moves onto the step, the front lifting plate 3 is driven back to its original position by the electric push rod 1. The battery car is continuously driven forward by the auxiliary wheel 22. After the rear roller 23 of the battery car also moves onto the step, the rear lifting plate 18 is driven back to its original position by the electric push rod 20, thus realizing the barrier-free climbing of the battery car up the step.

Claims

1. An obstacle-free stair climbing structure for an electric vehicle, comprising a chassis (1), characterized in that: A first electric push rod (2) is fixedly sleeved in the middle of the chassis (1). A front lifting plate (3) is fixedly installed at the telescopic end of the first electric push rod (2) and directly below the chassis (1). The bottom of the front lifting plate (3) is uniformly and movably connected with swing plates (4) through shafts. The number of swing plates (4) is eight, and they are grouped in pairs. A first motor (5) is fixedly installed between two swing plates (4) in the same group. A first gear (6) is fixedly sleeved on the output shaft of the first motor (5). The first gear (6) externally meshes with a second gear (7). A first rotating shaft (8) is fixedly sleeved in the middle of the second gear (7). The first rotating shaft (8) is movably sleeved between two swing plates (4). A first transmission roller (9) is fixedly sleeved in the middle of the first rotating shaft (8). A transmission toothed belt (10) externally meshes with the first transmission roller (9). The other end of the transmission toothed belt (10) meshes with a second transmission roller (11). A second rotating shaft (12) is fixedly sleeved in the middle of the second transmission roller (11). The second rotating shaft (12) is movably sleeved between two swing plates (4). On the second rotating shaft (12) and on the left and right sides of the second transmission roller (11), a first auxiliary wheel (13) is fixedly sleeved respectively.

2. The barrier-free step-climbing structure of an electric vehicle according to claim 1, characterized in that: Hydraulic rods (14) are uniformly and movably connected to the bottom of the front lifting plate (3) through shafts. The number of hydraulic rods (14) is eight, and they are grouped in pairs. A connecting rod (15) is movably connected between the telescopic ends of two hydraulic rods (14) in the same group. The connecting rod (15) is fixedly sleeved between two swing plates (4) in the same group.

3. The barrier-free step-up structure of an electric vehicle according to claim 1, characterized in that: Two slide rails (16) are fixedly installed at the rear of the chassis (1). The two slide rails (16) are symmetrically distributed left and right. A slider (17) is movably connected to the slide rails (16). A rear lifting plate (18) is fixedly installed between the two sliders (17). A cover plate (19) is fixedly installed between the tops of the two slide rails (16).

4. The barrier-free step-up structure of an electric vehicle according to claim 3, wherein: Two second electric push rods (20) are fixedly installed at the bottom of the cover plate (19). The two second electric push rods (20) are symmetrically distributed left and right. The telescopic ends of the second electric push rods (20) are fixedly installed on the rear lifting plate (18). Two second motors (21) are respectively fixedly installed in the left and right parts of the inner cavity of the rear lifting plate (18). The output shafts of the second motors (21) are movably sleeved with the rear lifting plate (18). Second auxiliary wheels (22) are fixedly sleeved on the output shafts of the second motors (21) and on the left and right sides of the rear lifting plate (18).

5. The barrier-free step-up structure of an electric vehicle according to claim 1, characterized in that: Four rollers (23) are uniformly and movably sleeved on the bottom of the chassis (1) through shafts. A driving rod (24) is movably connected to the front of the chassis (1) through a shaft. A steering wheel (25) is fixedly installed at the top of the driving rod (24). Lighting lamps (26) are respectively fixedly installed on the front of the chassis (1) and on the left and right sides of the driving rod (24). A seat (27) is fixedly installed on the chassis (1) directly behind the first electric push rod (2).

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