Loading and unloading lifting platform and using method thereof

Abstract

The invention belongs to the technical field of lifting tables, and discloses a loading and unloading lifting table and a using method thereof.The lifting table comprises a first table plate hinged to a goods table, first apron boards are fixed to the two sides of the first table plate, a second table plate is arranged at the bottom of the first table plate, second apron boards are fixedly connected to the two sides of the second table plate, the second apron boards are located on the inner sides of the first apron boards, and the length of the second table plate is smaller than that of the first table plate; the rear end of the second apron board extends backwards to be aligned with the rear end of the first apron board, a sliding groove is transversely formed in the first apron board, a rear sliding block and a front sliding block are correspondingly arranged on the outer side of the second apron board, the front end of the sliding groove is bent upwards to form a bent groove, and the second platen is an inclined face with the low front end and the high rear end. A second hinge seat is fixedly connected above the sliding seat, and a push rod is connected between the first hinge seat and the second hinge seat. The lifting platform is simple and reasonable in structure, and the needed area is small when the lifting platform is built; meanwhile, the carriage can be prevented from colliding with the cargo platform and the cargo inlet and outlet, and loss is reduced.

Description

Technical Field

[0001] This invention belongs to the field of lifting platform technology, specifically relating to a loading and unloading lifting platform and its usage method. Background Technology

[0002] Modern factory buildings and warehouses are designed with raised loading and unloading platforms (cement platforms). However, there is always a height difference and gap between the loading and unloading platform and the trucks (including container trucks, box trucks, etc.), which makes it impossible for loading and unloading vehicles (such as forklifts and handcarts) to directly enter and exit the trucks. They have to rely on manual handling, which wastes time, manpower and costs, seriously affects work efficiency and increases the danger of operation.

[0003] Loading and unloading platforms are designed and manufactured to address and overcome the above-mentioned issues. They can be flexibly connected to trucks, allowing loading and unloading vehicles to directly enter and exit the trucks without obstruction, greatly improving loading and unloading efficiency. They are essential loading and unloading equipment for modern logistics warehouses and factories.

[0004] Current lifting platforms are generally single-panel lifts driven by cylinders, which occupy a large area. Furthermore, due to the tilting and lifting action, the outer edge of the platform will shift inward relative to the edge of the loading platform when it is lifted. Even if there is a tongue plate that extends outward to compensate, the length of the tongue plate is limited. Currently, trucks still need to press their cargo boxes tightly against the loading platform or loading / unloading door openings, which often results in trucks colliding with cement walls. Summary of the Invention

[0005] To overcome the above-mentioned technical problems, the present invention provides a loading and unloading lifting platform and its usage method.

[0006] The present invention adopts the following technical solution:

[0007] A loading and unloading lifting platform includes a horizontal platform first hinged to a loading platform at its rear end. Skirts first are fixedly connected downwards to both sides of the platform first. A platform second is disposed at the bottom of the platform first. A tongue plate is hinged to the front end of the platform second, and the tongue plate is aligned with the front end of the platform first. Skirts second are fixedly connected downwards to both sides of the platform second. The platform second is narrower than the platform first. The skirts second are located inside the skirts first. The length of the platform second is less than that of the platform first. The rear end of the skirts second extends rearward relative to the platform second until it aligns with the rear end of the skirts first. The skirts first have a lateral... The slide groove is formed by fixing a rear slider and a front slider to the outer side of the second skirt plate. The front slider is positioned further back than the second platform plate. The front slider and the rear slider are located within the slide groove. The front end of the slide groove is curved upward to form a curved groove. The second platform plate has an inclined surface with a lower front end and a higher rear end. A lead screw is provided on the platform along the front-to-back direction. The lead screw drives and connects to the slide block. A hinge seat one is fixedly connected to the lower front end of the second platform plate. A hinge seat two is fixedly connected to the upper part of the slide block. A push rod is connected between the hinge seat one and the hinge seat two. The hinge seat one is higher than the hinge seat two.

[0008] The inclination of the second platform is such that when the front slider slides to the top of the curved groove, the second platform is flush with the first platform.

[0009] The hinge seat 1, hinge seat 2, push rod, slide and lead screw are arranged in two sets, one on the left and one on the right. The two lead screws are driven simultaneously by a motor fixedly installed on the platform through a reduction gearbox.

[0010] The motor is positioned between the two lead screws.

[0011] The lower surface of the first skirt panel is provided with support legs, and the lower surface of the second skirt panel is provided with rollers.

[0012] The length of the second platform is set to half the length of the first platform.

[0013] A cylinder is installed between the tongue plate and the second platform.

[0014] A method for using a loading and unloading lifting platform includes the following steps:

[0015] S1. When the motor is working, it drives the two lead screws to rotate clockwise through the gearbox. The lead screws drive the slide to move forward. The slide pushes the platform plate 2 forward through the hinge seat 2, the push rod and the hinge seat 1. The front slide and the rear slide move forward along the slide groove.

[0016] S2. The front slider slides to the curved groove and continues to move up along the curved groove to the top. At this time, the front slider is higher than the rear slider. At the same time, after the second platform moves up and flips, it is flush with the first platform. The first platform and the second platform are then joined together.

[0017] S3. The slide continues to move forward, and the push rod drives the second platform to rise. The second platform drives the first platform to rise through the front and rear sliders. The assembled platform finally forms an inclined surface for loading and unloading.

[0018] S4. The tongue is flipped up and placed on the truck bed for easy transport of goods.

[0019] Compared with the prior art, the beneficial effects of the present invention are:

[0020] 1. This invention is provided with two double-layered platforms, Platform 1 and Platform 2. When the lifting platform is raised, Platform 1 and Platform 2 are joined together. When not in use, Platform 2 is stored under Platform 1. The area required for the construction of this lifting platform is small, which can save valuable platform space or storage space.

[0021] 2. When the present invention is in operation, the second platform extends forward and then splices with the first platform. The entire platform extends outward relative to the loading platform. When loading and unloading goods, the truck does not need to stop near the loading platform, which can completely avoid collisions between the truck body and the loading platform or the loading and unloading port, and reduce losses. Attached Figure Description

[0022] Figure 1 This is an overall schematic diagram of the invention;

[0023] Figure 2 This is a schematic diagram of the present invention (with the tongue plate removed);

[0024] Figure 3 This is a schematic diagram of the invention (with the tongue plate, motor, and gearbox removed);

[0025] Figure 4 This is a schematic diagram of the cross-section of the present invention along the axis of symmetry;

[0026] Figure 5 This is a schematic diagram of the cross-section of the present invention along the axis of symmetry (in working condition).

[0027] Explanation of reference numerals in the attached figures:

[0028] 1. Platform; 2. Platform 1; 3. Skirt 1; 4. Platform 2; 5. Skirt 2; 6. Rear slider; 7. Front slider; 8. Slide groove; 9. Curved groove; 10. Tongue plate; 11. Hinge seat 1; 12. Hinge seat 2; 13. Slide block; 14. Push rod; 15. Lead screw; 16. Motor; 17. Gearbox; 18. Support leg; 19. Roller. Detailed Implementation

[0029] The embodiments of the present invention are described in detail below. Examples of these embodiments are shown in the accompanying drawings. Throughout the drawings, the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions. Unless otherwise specified, the raw materials and equipment used are commercially available or commonly used in the art. The methods in the embodiments, unless otherwise specified, are conventional methods in the art. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and should not be construed as limiting the present invention.

[0030] A loading and unloading lifting platform includes a horizontal platform 2 hinged to the rear end of a loading platform 1. Skirts 3 are fixedly connected downwards to both sides of platform 2. A platform 4 is located at the bottom of platform 2. A tongue 10 is hinged to the front end of platform 4, aligned with the front end of platform 2. A cylinder is installed between the tongue 10 and platform 4 to control the movement of the tongue 10 (details omitted here). Skirts 5 are fixedly connected downwards to both sides of platform 4. Platform 24 is narrower than platform 2. Skirts 5 are located inside skirts 3. The length of platform 24 is half the length of platform 2. The rear end of skirts 5 extends rearward relative to platform 24 to align with the rear end of skirts 3. Skirt 3 has a transversely opened groove 8. A rear slider 6 and a front slider 7 are fixedly connected to the outer side of skirt 25. The front slider 7 is positioned further back than platform 24. The front slider 7 and rear slider 6 are located within the groove 8. The front end of the groove 8 curves upwards to form a curved groove 9. Platform 2 4 has an inclined surface with a lower front end and a higher rear end. The inclination of platform 2 4 satisfies the following condition: when the front slider 7 slides to the top of the curved groove 9, platform 2 4 is flush with platform 1 2. A lead screw 15 is set along the front-rear direction of the loading platform 1. The lead screw 15 drives the connecting slide 13. The lower front end of platform 2 4 is fixedly connected to hinge seat 11. The upper part of slide 13 is fixedly connected to hinge seat 2 12. A push rod 14 is connected between hinge seat 11 and hinge seat 2 12. Hinge seat 11 is higher than hinge seat 2 12. When the motor 16 is working, it will cause the following: in the first stage, platform 2 4 moves forward and rises to splice with platform 1 2; in the second stage, platform 2 4 and platform 1 2 flip up together to form a loading and unloading ramp. Since platform 2 4, which occupies one-third of the length after splicing, is usually stored under platform 1 2, the construction of this lifting platform saves nearly one-third of the loading platform 1 area compared with conventional technology. Moreover, the ramp formed by splicing extends out of the loading platform 1, so the truck does not need to be close to the loading platform 1 when docking.

[0031] Two sets of hinge base 11, hinge base 12, push rod 14, slide 13 and lead screw 15 are arranged on the left and right respectively. The two lead screws 15 are driven simultaneously by motor 16 fixedly installed on the platform 1 through reduction gearbox 17. In order to save space and maximize the length of lead screw 15 to increase stroke, motor 16 is arranged between the two lead screws 15.

[0032] The lower surface of skirt panel 3 is provided with support legs 18 to support platform 2 in its normal state, and the lower surface of skirt panel 5 is provided with rollers 19 to facilitate the outward movement of platform 4 in the first stage.

[0033] A method for using a loading and unloading lifting platform includes the following steps:

[0034] S1. The motor 16 works, and drives the two lead screws 15 to rotate clockwise through the reduction gearbox 17. The lead screws 15 drive the slide 13 to move forward. The slide 13 pushes the platform 4 forward through the hinge seat 2 12, the push rod 14 and the hinge seat 11. The front slider 7 and the rear slider 6 move forward along the slide groove 8.

[0035] S2. The front slider 7 slides to the curved groove 9 and continues to move up along the curved groove 9 to the top. At this time, the front slider 7 is higher than the rear slider 6. At the same time, the second platform 4 is flush with the first platform 2 after moving up and flipping the angle. The first platform 2 and the second platform 4 are spliced ​​together.

[0036] S3. The slide block 13 continues to move forward, and the push rod 14 drives the platform 2 4 to rise. The platform 2 4 drives the platform 1 2 to rise through the front slider 7 and the rear slider 6. The spliced ​​platform finally forms an inclined surface for loading and unloading.

[0037] S4. The tongue plate 10 is flipped up and placed on the truck bed for easy transport of goods.

[0038] Although embodiments of the present invention have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions and variations can be made to the above embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the claims and their equivalents.

Claims

1. A loading and unloading lifting platform, comprising a horizontal platform hinged to a cargo platform at its rear end, wherein skirts are fixedly connected downwards to both sides of the platform, characterized in that, A second platform is provided at the bottom of the first platform. A tongue plate is hinged to the front end of the second platform, and the tongue plate is aligned with the front end of the first platform. Skirt plates are fixedly connected downwards on both sides of the second platform. The second platform is narrower than the first platform and is located inside the first skirt plate. The length of the second platform is less than that of the first platform. The rear end of the second skirt plate extends backward relative to the first platform until it is aligned with the rear end of the first skirt plate. The first skirt plate has a horizontally opened groove. A rear slider and a front slider are fixedly connected to the outer side of the second skirt plate. The front slider is positioned further back than the second platform and is located within the groove. The front end of the groove is bent upwards to form a curved groove. The second platform has an inclined surface with a lower front end and a higher rear end. A lead screw is provided along the front-rear direction on the platform. The lead screw drives a sliding block. A first hinge seat is fixedly connected below the front end of the second platform. A second hinge seat is fixedly connected above the sliding block. A push rod is connected between the first and second hinge seats. The first hinge seat is higher than the second hinge seat.

2. The loading and unloading lifting platform according to claim 1, characterized in that, The inclination of the second platform is such that when the front slider slides to the top of the curved groove, the second platform is flush with the first platform.

3. A loading and unloading lifting platform according to claim 2, characterized in that, The hinge seat 1, hinge seat 2, push rod, slide and lead screw are arranged in two sets, one on the left and one on the right. The two lead screws are driven simultaneously by a motor fixedly installed on the platform through a reduction gearbox.

4. A loading and unloading lifting platform according to claim 3, characterized in that, The motor is positioned between the two lead screws.

5. A loading and unloading lifting platform according to claim 1, characterized in that, The lower surface of the first skirt panel is provided with support legs, and the lower surface of the second skirt panel is provided with rollers.

6. A loading and unloading lifting platform according to claim 1, characterized in that, The length of the second platform is set to half the length of the first platform.

7. A loading and unloading lifting platform according to claim 1, characterized in that, A cylinder is installed between the tongue plate and the second platform.

8. A method of using a loading and unloading lifting platform, characterized in that, The loading and unloading lifting platform according to claim 4 includes the following steps: S1. The motor works, and the screw rotates through the gearbox. The screw drives the slide to move forward. The slide pushes the platform two forward through the push rod. The front slide and the rear slide move forward along the slide groove. S2. The front slider slides to the curved groove and moves up to the top of the curved groove. The second platform moves up and flips its angle to be flush with the first platform. S3. The slide continues to move forward, driving the second platform to rise through the push rod. The second platform drives the first platform to rise through the front and rear sliders, forming an inclined surface for loading and unloading. S4. The tongue is flipped up and placed on the cargo box of the freight car.

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