A platform door with a lifting function

Abstract

The invention discloses a platform door with a lifting function, comprising a sleeve beam, an I-beam, a connecting rectangular tube, a limiting roller, a limiting block, a steel wire rope, a fixed pulley, a movable pulley, a hydraulic cylinder, a rope-pulling plate, a connecting plate, a door frame, a platform plate, a hinge, a gas spring, an upper door, a zipper, a bracket and a through groove. A connecting rectangular tube is fixed on the bottom end between two I-beams, a sleeve beam is slidably mounted on the outer wall of the I-beam, a limiting block is fixed on the outer wall of the I-beam, a limiting roller is rotatably mounted on the outer wall of the limiting block, and the outer wall of the limiting roller is fitted with the inner wall of the sleeve beam, and a steel wire rope is connected to the top end of the I-beam. The invention has a simple structure and is easy to operate. When the platform plate is closed, it is used as a cabin door and has the functions of preventing dust, sand and rainwater. When the platform plate body is opened, it is used as a bearing platform of a lifting system and is used for transporting articles or people on and off a vehicle. The lifting track is used for guiding in the lifting process of the platform plate, the gas spring is used for supporting the upper door, and the chain is used for connecting the platform plate.

Description

Technical Field

[0001] The present invention relates to the technical field of platform door devices, and particularly to a platform door with a lifting function. Background Art

[0002] For the prior vehicle lifting system, such as a hydraulic tailgate and a vertical lifting platform, a cabin door body needs to be additionally configured outside this set of systems. The lifting platform occupies a relatively large amount of space inside or outside the cabin. The hydraulic tailgate has the disadvantages of high cost and occupying external space. During the use of the vertical lifting platform, the platform needs to be disassembled, resulting in inconvenient use. The disassembled platform also requires a storage space, thus occupying the cabin space. Summary of the Invention

[0003] The purpose of the present invention is to provide a platform door with a lifting function. The structure of the present invention is simple and the operation is convenient. When the platform plate is closed, it serves as a cabin door, having the functions of preventing dust and sand and rainwater. When the platform plate body is opened, it serves as a bearing platform of the lifting system, used for transporting items or personnel to get on and off the vehicle; the lifting track is used for guiding during the lifting process of the platform plate.

[0004] The purpose of the present invention can be achieved by the following technical solutions:

[0005] A platform door with a lifting function includes a sleeve beam, an I-beam, a connecting square pipe, a limit roller, a limit block, a steel wire rope, a fixed pulley, a movable pulley, a hydraulic cylinder, a pull rope plate, a connecting plate, a door frame, a platform plate, a hinge, a gas spring, an upward-opening door, a zipper, a bracket and a through groove. A connecting square pipe is fixed at the bottom end between two I-beams. A sleeve beam is slidably installed up and down on the outer wall of the I-beam. A limit block is fixed on the outer wall of the I-beam. A limit roller is rotatably installed on the outer wall of the limit block, and the outer wall of the limit roller is in contact with the inner wall of the sleeve beam. A steel wire rope is connected to the top end of the I-beam. A door frame is installed at the top end between the sleeve beams. A bracket is fixed on the inner wall of the door frame. A hydraulic cylinder is installed on the outer wall of the bracket. A movable pulley is correspondingly installed on one end of the telescopic shaft of the hydraulic cylinder and the steel wire rope, and the steel wire rope is wound around the movable pulley. A fixed pulley is correspondingly installed on the outer wall of the bracket for the steel wire rope, and the steel wire rope is wound around the fixed pulley. A pull rope plate is fixed on the outer wall of the bracket on the side of the hydraulic cylinder, and the other end of the steel wire rope is fixedly connected to the pull rope plate. A through groove is opened on one side of the sleeve beam. A connecting plate is fixed on the outer wall of the I-beam corresponding to the through groove. A zipper is installed on the outer wall of the connecting plate passing through the through groove. A platform plate is installed on the outer wall of the connecting square pipe corresponding to the zipper through a hinge, and the other end of the zipper is fixedly connected to the platform plate. An upward-opening door is installed on the outer wall of the door frame through a hinge. Gas springs are rotatably installed on both sides of the upward-opening door, and the other ends of the gas springs are rotatably installed on the outer wall of the sleeve beam.

[0006] As a further solution of the present invention: a door lock is installed on one side of the upward-opening door.

[0007] As a further solution of the present invention: a first pulley is installed on the outer wall of the top end of the sleeve beam.

[0008] As a further solution of the present invention: the hydraulic cylinder has a self-locking function and a manual function.

[0009] As a further solution of the present invention: a control box is installed on one side of the bracket. A power supply, a wireless controller, and a wireless control receiver are installed inside the control box. A travel switch is installed below the control box on the bracket. The power supply, the wireless controller, the wireless control receiver, and the travel switch form a control system.

[0010] The beneficial effects of the present invention are as follows: The structure of the present invention is simple and the operation is convenient. When the platform plate is closed, it is used as a hatch door, which has the functions of preventing dust and sand and rainwater. When the platform plate body is opened, it is used as a bearing platform for the lifting system, and is used to transport items or personnel up and down the vehicle; the lifting track is used for guiding during the lifting process of the platform plate, the gas spring is used to support the upward-opening door, and the chain is used to connect the platform plate; the provided sleeve beam and I-beam, in cooperation with the limit rollers and limit blocks for support, prevent shaking and abnormal noises during operation, and improve the safety and comfort during use; the hydraulic cylinder has a self-locking function and a manual function, ensuring the safety and reliability of the system operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] For the convenience of those skilled in the art to understand, the present invention will be further described below with reference to the accompanying drawings.

[0012] Figure 1 It is a schematic front view structure diagram of the whole of the present invention;

[0013] Figure 2 It is a schematic side view structure diagram of the whole of the present invention;

[0014] Figure 3 It is a top view cross-sectional view of the present invention;

[0015] Figure 4 For the present invention Figure 3 The enlarged structure diagram of area A in;

[0016] In the figure: 1. Sleeve beam; 2. I-beam; 3. Connecting square pipe; 4. Limit roller; 5. Limit block; 6. Steel wire rope; 7. Fixed pulley; 8. Movable pulley; 9. Hydraulic cylinder; 10. Pulling rope plate; 11. Connecting plate; 12. Door frame; 13. Door lock; 14. Platform plate; 15. Hinge; 16. Gas spring; 17. Upward-opening door; 18. Zipper; 19. Bracket; 20. Through groove; 21. First pulley; 22. Control box. DETAILED DESCRIPTION OF THE INVENTION

[0017] The technical solution of the present invention will be clearly and completely described below in conjunction with the embodiments. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative work belong to the scope of protection of the present invention.

[0018] As Figures 1-4 shown, a platform door with a lifting function includes a sleeve beam 1, an I-beam 2, a connecting square pipe 3, a limit roller 4, a limit block 5, a steel wire rope 6, a fixed pulley 7, a movable pulley 8, a hydraulic cylinder 9, a pull rope plate 10, a connecting plate 11, a door frame 12, a platform plate 14, a hinge 15, a gas spring 16, an upward-opening door 17, a zipper 18, a bracket 19, and a through groove 20. A connecting square pipe 3 is fixed at the bottom end between two I-beams 2. A sleeve beam 1 is slidably installed up and down on the outer wall of the I-beam 2. A limit block 5 is fixed on the outer wall of the I-beam 2. A limit roller 4 is rotatably installed on the outer wall of the limit block 5, and the outer wall of the limit roller 4 is in contact with the inner wall of the sleeve beam 1. A steel wire rope 6 is connected to the top end of the I-beam 2. A door frame 12 is installed at the top end between the sleeve beams 1. A bracket 19 is fixed on the inner wall of the door frame 12. A hydraulic cylinder 9 is installed on the outer wall of the bracket 19. A movable pulley 8 corresponding to the steel wire rope 6 is installed at one end of the telescopic shaft of the hydraulic cylinder 9, and the steel wire rope 6 is wound around the movable pulley 8. A fixed pulley 7 corresponding to the steel wire rope 6 is installed on the outer wall of the bracket 19, and the steel wire rope 6 is wound around the fixed pulley 7. A pull rope plate 10 is fixed on the outer wall of the bracket 19 on one side of the hydraulic cylinder 9, and the other end of the steel wire rope 6 is fixedly connected to the pull rope plate 10. A through groove 20 is formed on one side of the sleeve beam 1. A connecting plate 11 corresponding to the through groove 20 is fixed on the outer wall of the I-beam 2. A zipper 18 is installed on the outer wall of the connecting plate 11 passing through the through groove 20. A platform plate 14 is installed on the outer wall of the connecting square pipe 3 corresponding to the zipper 18 through a hinge 15, and the other end of the zipper 18 is fixedly connected to the platform plate 14. An upward-opening door 17 is installed on the outer wall of the door frame 12 through a hinge 15. Gas springs 16 are rotatably installed on both sides of the upward-opening door 17, and the other ends of the gas springs 16 are rotatably installed on the outer wall of the sleeve beam 1; A door lock 13 is installed on one side of the upward-opening door 17, which is relatively practical and perfect and is convenient for fixing the upward-opening door 17; A first pulley 21 is installed on the top outer wall of the sleeve beam 1, which is relatively perfect to prevent the steel wire rope 6 from being damaged by friction with the sleeve beam 1 and improves the service life of the steel wire rope 6; The hydraulic cylinder 9 has a self-locking function and a manual function, which is relatively practical and perfect to ensure the safety and reliability of the system operation; A control box is installed on one side of the bracket 19. A power supply, a wireless controller, and a wireless control receiver are installed inside the control box 22. A travel switch is installed on the bracket 19 below the control box 22. The power supply, the wireless controller, the wireless control receiver, and the travel switch form a control system to further ensure the safety and reliability of the system operation.

[0019] Working principle of the present invention: When the upward-opening door 17 and the platform plate 14 are closed, they are used as upper and lower opposite-opening doors. When the upward-opening door 17 is opened, it is used as a sunshade. When the platform plate 14 is opened, it is used as a lifting platform plate. The telescopic movement of the hydraulic cylinder 9 drives the movable pulley 8 to move. A fixed pulley 7 is provided on the bracket 19. The cooperation between the movable pulley 8 and the fixed pulley 7 drives the telescopic movement of the steel wire rope 6, thereby driving the rise and fall of the platform plate 14.

[0020] The preferred embodiments of the present invention disclosed above are only used to help illustrate the present invention. The preferred embodiments do not describe all the details in detail, nor do they limit the invention to the specific embodiments described. Obviously, many modifications and variations can be made according to the content of this specification. These embodiments are selected and specifically described in this specification to better explain the principle and practical application of the present invention, so that those skilled in the art can understand and utilize the present invention well. The present invention is only limited by the claims and their full scope and equivalents.

Claims

1. A platform door with a lifting function, characterized in that, it includes a sleeve beam, an I-beam, a connecting square pipe, a limit roller, a limit block, a steel wire rope, a fixed pulley, a movable pulley, a hydraulic cylinder, a pull rope plate, a connecting plate, a door frame, a platform plate, a hinge, a gas spring, an upward-opening door, a zipper, a bracket and a through groove. A connecting square pipe is fixed on the bottom end between the two I-beams. The sleeve beam is slidably installed up and down on the outer wall of the I-beam. A limit block is fixed on the outer wall of the I-beam. A limit roller is rotatably installed on the outer wall of the limit block, and the outer wall of the limit roller is in contact with the inner wall of the sleeve beam. A steel wire rope is connected to the top end of the I-beam. A door frame is installed on the top end between the sleeve beams. A bracket is fixed on the inner wall of the door frame. A hydraulic cylinder is installed on the outer wall of the bracket. A movable pulley corresponding to the steel wire rope is installed at one end of the telescopic shaft of the hydraulic cylinder, and the steel wire rope is wound around the movable pulley. A fixed pulley corresponding to the steel wire rope is installed on the outer wall of the bracket, and the steel wire rope is wound around the fixed pulley. A pull rope plate is fixed on the outer wall of the bracket on one side of the hydraulic cylinder, and the other end of the steel wire rope is fixedly connected to the pull rope plate. A through groove is opened on one side of the sleeve beam. A connecting plate corresponding to the through groove is fixed on the outer wall of the I-beam. A zipper is installed on the outer wall of the connecting plate passing through the through groove. A platform plate is installed on the outer wall of the connecting square pipe corresponding to the zipper through a hinge, and the other end of the zipper is fixedly connected to the platform plate. An upward-opening door is installed on the outer wall of the door frame through a hinge. Gas springs are rotatably installed on both sides of the upward-opening door, and the other ends of the gas springs are rotatably installed on the outer wall of the sleeve beam.

2. The platform door with a lifting function according to claim 1, characterized in that, a door lock is installed on one side of the upward-opening door.

3. The platform door with a lifting function according to claim 1, characterized in that, a first pulley is installed on the outer wall of the top end of the sleeve beam.

4. The platform door with a lifting function according to claim 1, characterized in that, the hydraulic cylinder has a self-locking function and a manual function.

5. The platform door with a lifting function according to claim 1, characterized in that, a control box is installed on one side of the bracket. A power supply, a wireless controller and a wireless control receiver are installed inside the control box. A travel switch is installed on the bracket below the control box. The power supply, the wireless controller, the wireless control receiver and the travel switch form a control system.

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