A folding lifting plate

Abstract

This utility model discloses a folding lifting platform, relating to the field of lifting platform technology. It includes a carriage, a mounting base, and a support plate, and further includes: a lifting assembly disposed on the mounting base for automatically lifting the support plate; a folding assembly disposed on the lifting assembly for automatically folding the support plate; an extension assembly disposed on the support plate for expanding the support space of the support plate; and a fixing assembly disposed on the support plate for fixing the extension assembly. By using the fixing assembly, the electromagnet generates magnetic attraction when energized, allowing the fixing plate to precisely disengage from the fixing square hole, facilitating the unfolding of the extension plate. After power is cut off, a telescopic spring pushes the iron plate back to its original position, ensuring that the fixing plate automatically inserts into the fixing square hole to form a mechanical lock. Even when power is off, the locked state is maintained. This assembly combines the convenience of electric drive with the reliability of mechanical self-locking, thereby effectively improving the stability of the extended portion of the lifting platform.

Description

Technical Field

[0001] This utility model relates to the field of lifting platform technology, and in particular to a folding lifting platform. Background Technology

[0002] Folding lifting platforms are foldable structures that achieve lifting functions through mechanical devices. They are mainly used in logistics transportation, construction operations, and barrier-free facilities. Folding lifting platforms include folding lifting tailboards, folding ladders, and stepping boards.

[0003] Chinese Patent CN217320168U discloses a stacked lifting tailgate, comprising a truck. Two mounting blocks are fixedly installed at the rear of the truck. A cylinder is fixedly mounted on each mounting block, and a lifting block is fixedly mounted on the piston rod of the cylinder. A rotating rod is rotatably mounted between the two lifting blocks, and a lifting plate is fixedly mounted on the rotating rod. A groove is formed on the lifting plate, and the rotating plate is housed within the groove. In this invention, by engaging the groove, the rotating plate rotates, bringing one end of the rotating plate into contact with the ground. Goods are moved onto the lifting plate via the rotating plate, which acts as a transition. The piston rod of the cylinder retracts, driving the lifting plate upwards. Once the lifting plate is level with the truck floor, the goods are pushed into the truck. This mechanical handling operation is simple, time-saving, labor-saving, and improves handling efficiency.

[0004] Although the aforementioned lifting platform can effectively improve handling efficiency, the mechanical limiting mechanism of the rotating plate of the lifting platform, which relies on positioning balls and springs for fixation, makes it easy for the positioning balls to come out of the positioning holes due to continuous vibration during vehicle movement, and they may even bounce off on their own due to vibration, thereby reducing the stability of the extended part of the storage lifting platform. Utility Model Content

[0005] In view of the shortcomings of the existing technology, the purpose of this utility model is to provide a folding lifting plate, which aims to solve the technical problem of low stability when the lifting plate is folded up.

[0006] To achieve the above objectives, the present invention adopts the following technical solution: A folding lifting platform includes a carriage, a mounting base, and a support plate, and further includes: A lifting assembly, mounted on the mounting base, is used for the automatic lifting and lowering of the support plate; A folding assembly, disposed on the lifting assembly, is used to automatically fold the support plate; An extension component is disposed on the support plate to expand the support space of the support plate; A fixing component is disposed on the support plate and is used to fix the extension component.

[0007] Preferably, the lifting assembly includes: The second telescopic rod is fixedly connected to the mounting base; The shock-absorbing spring is fixedly connected to the mounting base; A multi-stage hydraulic telescopic rod is fixedly connected to the second telescopic rod, and the multi-stage hydraulic telescopic rod is fixedly connected to the shock-absorbing spring; The lifting frame is fixedly connected to the multi-stage hydraulic telescopic rod, and the lifting frame is slidably connected to the mounting base.

[0008] Preferably, the folding assembly includes: A drive motor is mounted on the lifting frame and fixedly connected to the lifting frame; The drive gear is fixedly connected to the output shaft of the drive motor; A rotating shaft is rotatably connected to the lifting frame, and the rotating shaft is fixedly connected to the bearing plate; The driven gear is fixedly connected to the rotating shaft, and the driven gear meshes with the driving gear.

[0009] Preferably, the folding assembly further includes: A fixed shaft is mounted on the support plate and fixedly connected to the support plate; The first reinforcing plate is rotatably connected to the fixed shaft; The second reinforcing plate is rotatably connected to the first reinforcing plate, and the second reinforcing plate is rotatably connected to the lifting frame.

[0010] Preferably, the extension component includes: A load-bearing hinge is fixedly connected to the load-bearing plate; An extension plate is fixedly connected to the load-bearing hinge; A fixed square hole is provided on the extension plate; An electro-hydraulic actuator is fixedly connected to the support plate; A support plate is fixedly connected to the electro-hydraulic actuator, the support plate is slidably connected to the bearing plate, and the support plate is slidably connected to the extension plate.

[0011] Preferably, the fixing component includes: A mounting slot is provided on the support plate; An electromagnet is mounted on the mounting slot and fixedly connected to the support plate. A telescopic spring is provided on the mounting groove and is fixedly connected to the bearing plate; The first telescopic rod is disposed on the mounting groove and fixedly connected to the bearing plate; An iron plate is fixedly connected to the first telescopic rod, and the iron plate is fixedly connected to the telescopic spring. A fixing plate is fixedly connected to the iron plate.

[0012] Preferably, the iron plate is slidably connected to the support plate.

[0013] Preferably, the fixing plate is slidably connected to the extension plate and engages with the fixing square hole on the extension plate.

[0014] In summary, due to the adoption of the above technical solution, the beneficial effects of this utility model are: By setting up a fixing component, the electromagnet generates magnetic attraction when energized, which allows the fixing plate to precisely disengage from the fixing square hole, facilitating the unfolding of the extension plate. After power is cut off, the telescopic spring pushes the iron plate back to its original position, ensuring that the fixing plate automatically inserts into the fixing square hole to form a mechanical lock. Even when power is off, the locked state can be maintained. This component combines the convenience of electric drive with the reliability of mechanical self-locking, thereby effectively improving the stability of the extension section of the lifting plate. Attached Figure Description

[0015] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0016] Figure 1 A three-dimensional structural schematic diagram of a folding lifting plate is shown.

[0017] Figure 2 A first partial sectional view of a folding lifting platform is shown.

[0018] Figure 3 It shows Figure 2 A magnified view of a portion of point A in the middle.

[0019] Figure 4 A second partial sectional view of a folding lifting platform is shown.

[0020] Figure 5 It shows Figure 4 A magnified view of a portion of point B in the middle.

[0021] Figure 6 A third partial sectional view of a folding lifting platform is shown.

[0022] Figure 7 A fourth partial sectional view of a folding lifting platform is shown.

[0023] Figure 8 It shows Figure 7A magnified view of a portion of point C.

[0024] Legend: 1. Carriage; 2. Mounting base; 3. Bearing plate; 4. Second telescopic rod; 5. Shock-absorbing spring; 6. Multi-stage hydraulic telescopic rod; 7. Lifting frame; 8. Drive motor; 9. Drive gear; 10. Rotating shaft; 11. Driven gear; 12. Fixed shaft; 13. First reinforcing plate; 14. Second reinforcing plate; 15. Load-bearing hinge; 16. Extension plate; 17. Fixed square hole; 18. Electro-hydraulic actuator; 19. Support plate; 20. Mounting groove; 21. Electromagnet; 22. Telescopic spring; 23. First telescopic rod; 24. Iron plate; 25. Fixed plate. Detailed Implementation

[0025] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of the present utility model.

[0026] In the description of this utility model, it should be understood that the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0027] It should be noted that when a component is described as "fixed to" another component, it can be directly on the other component or may have a component in between. When a component is considered "connected to" another component, it can be directly connected to the other component or may have a component in between. When a component is considered "set on" another component, it can be directly set on the other component or may have a component in between. The terms "vertical," "horizontal," "left," "right," and similar expressions used in this document are for illustrative purposes only.

[0028] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, "a plurality of" means two or more, unless otherwise explicitly specified.

[0029] Reference Figures 1 to 8 The present invention provides a further description of an embodiment of a folding lifting plate.

[0030] A folding lifting platform includes a carriage 1, a mounting base 2, and a support plate 3, and further includes: A lifting assembly, mounted on the mounting base 2, is used for the automatic lifting of the support plate 3. The lifting assembly includes: The second telescopic rod 4 is fixedly connected to the mounting base 2; The shock-absorbing spring 5 is fixedly connected to the mounting base 2; The multi-stage hydraulic telescopic rod 6 is fixedly connected to the second telescopic rod 4, and the multi-stage hydraulic telescopic rod 6 is fixedly connected to the shock-absorbing spring 5; The lifting frame 7 is fixedly connected to the multi-stage hydraulic telescopic rod 6, and the lifting frame 7 is slidably connected to the mounting base 2.

[0031] The multi-stage hydraulic telescopic rod 6 is activated, and the multi-stage hydraulic telescopic rod 6 extends, thereby driving the lifting frame 7, which is fixedly connected to the multi-stage hydraulic telescopic rod 6, to move. The movement of the lifting frame 7 drives the installation base 2, which is slidably connected to the lifting frame 7, to move. At the same time, the shock-absorbing spring 5 and the second telescopic rod 4 play the role of shock absorption and auxiliary support until the lifting frame 7 moves to the set height, and then the multi-stage hydraulic telescopic rod 6 is closed, achieving the effect of automatically lifting the load-bearing plate 3.

[0032] Reference Figures 1 to 8 A folding assembly, mounted on the lifting assembly, is used for automatically folding the support plate 3. The folding components include: The drive motor 8 is mounted on the lifting frame 7 and is fixedly connected to the lifting frame 7. The drive gear 9 is fixedly connected to the output shaft of the drive motor 8; The rotating shaft 10 is rotatably connected to the lifting frame 7, and the rotating shaft 10 is fixedly connected to the bearing plate 3. Driven gear 11 is fixedly connected to rotating shaft 10, and driven gear 11 meshes with driving gear 9; The fixed shaft 12 is mounted on the bearing plate 3 and is fixedly connected to the bearing plate 3; The first reinforcing plate 13 is rotatably connected to the fixed shaft 12; The second reinforcing plate 14 is rotatably connected to the first reinforcing plate 13, and the second reinforcing plate 14 is rotatably connected to the lifting frame 7.

[0033] When the drive motor 8 is started, the output shaft of the drive motor 8 rotates, which drives the drive gear 9, which is fixedly connected to the output shaft of the drive motor 8, to rotate. The rotation of the drive gear 9 drives the driven gear 11, which is meshed with the drive gear 9, to rotate. The rotation of the driven gear 11 drives the rotating shaft 10, which is fixedly connected to the driven gear 11, to rotate, thereby driving the support plate 3, which is fixedly connected to the rotating shaft 10, to rotate. At the same time, the first reinforcing plate 13 and the second reinforcing plate 14 play a role in strengthening the structural stability until the support plate 3 rotates to the horizontal working position. Then the drive motor 8 is turned off, achieving the effect of automatically folding and unfolding the support plate 3.

[0034] Reference Figures 1 to 8 An extension component, disposed on the support plate 3, is used to expand the support space of the support plate 3. The extension component includes: The load-bearing hinge 15 is fixedly connected to the load-bearing plate 3; The extension plate 16 is fixedly connected to the load-bearing hinge 15; A fixed square hole 17 is provided on the extension plate 16; The electro-hydraulic actuator 18 is fixedly connected to the bearing plate 3; The support plate 19 is fixedly connected to the electro-hydraulic actuator 18. The support plate 19 is slidably connected to the bearing plate 3 and to the extension plate 16.

[0035] Manually pull the extension plate 16, and the extension plate 16 unfolds through the load-bearing hinge 15, thereby expanding the load-bearing area of ​​the load-bearing plate 3. Activate the electro-hydraulic actuator 18, which extends, thereby driving the support plate 19, which is fixedly connected to the electro-hydraulic actuator 18, to move. The support plate 19 moves until it contacts the lower surface of the extension plate 16 and provides support for the extension plate 16. Close the electro-hydraulic actuator 18 to achieve the effect of expanding the load-bearing space and providing stable support.

[0036] Reference Figures 1 to 8 A fixing component, mounted on the support plate 3, is used to fix the extension component. The fixing component includes: Mounting slot 20 is provided on the support plate 3; Electromagnet 21 is mounted on mounting groove 20 and fixedly connected to support plate 3; The telescopic spring 22 is mounted on the mounting groove 20 and is fixedly connected to the bearing plate 3; The first telescopic rod 23 is set on the mounting groove 20 and is fixedly connected to the bearing plate 3; Iron plate 24 is fixedly connected to the first telescopic rod 23. Iron plate 24 is fixedly connected to telescopic spring 22 and slidably connected to bearing plate 3. The fixing plate 25 is fixedly connected to the iron plate 24. The fixing plate 25 is slidably connected to the extension plate 16 and engages with the fixing square hole 17 on the extension plate 16.

[0037] When electromagnet 21 is activated, it generates magnetism, attracting the iron plate 24 to move. The movement of the iron plate 24 drives the first telescopic rod 23, which is fixedly connected to the iron plate 24, to move and compress the telescopic spring 22. At the same time, the movement of the iron plate 24 drives the fixed plate 25, which is fixedly connected to the iron plate 24, to move until the fixed plate 25 disengages from the fixed square hole 17 on the extension plate 16, making it easy to unfold the extension plate 16. When it is necessary to fix the retracted extension plate 16, electromagnet 21 is turned off. The spring force pushes the iron plate 24, which is fixedly connected to the spring, to move, thereby driving the fixed plate 25, which is fixedly connected to the iron plate 24, to move until the fixed plate 25 is inserted into the fixed square hole 17 on the extension plate 16 and remains fixed, achieving the effect of conveniently and automatically locking the position of the extension plate 16.

[0038] By setting up a fixing component, the electromagnet 21 generates magnetic attraction when energized, which allows the fixing plate 25 to precisely disengage from the fixing square hole 17, facilitating the unfolding of the extension plate 16. After power is cut off, the telescopic spring 22 pushes the iron plate 24 to reset, ensuring that the fixing plate 25 automatically inserts into the fixing square hole 17 to form a mechanical lock. Even when power is cut off, the locked state can be maintained. This component combines the convenience of electric drive with the reliability of mechanical self-locking, thereby effectively improving the stability of the lifting plate storage extension part.

[0039] Working principle: Refer to Figures 1 to 8 The multi-stage hydraulic telescopic rod 6 is activated, and the multi-stage hydraulic telescopic rod 6 extends, thereby driving the lifting frame 7, which is fixedly connected to the multi-stage hydraulic telescopic rod 6, to move. The movement of the lifting frame 7 drives the installation base 2, which is slidably connected to the lifting frame 7, to move. At the same time, the shock-absorbing spring 5 and the second telescopic rod 4 play the role of shock absorption and auxiliary support until the lifting frame 7 moves to the set height, and the multi-stage hydraulic telescopic rod 6 is closed, achieving the effect of automatically lifting the load plate 3. Reference Figures 1 to 8 Start the drive motor 8. The output shaft of the drive motor 8 rotates, which drives the drive gear 9 fixedly connected to the output shaft of the drive motor 8 to rotate. The rotation of the drive gear 9 drives the driven gear 11 meshing with the drive gear 9 to rotate. The rotation of the driven gear 11 drives the rotating shaft 10 fixedly connected to the driven gear 11 to rotate, thereby driving the bearing plate 3 fixedly connected to the rotating shaft 10 to rotate. At the same time, the first reinforcing plate 13 and the second reinforcing plate 14 play a role in strengthening the structural stability until the bearing plate 3 rotates to the horizontal working position. Then, turn off the drive motor 8 to achieve the effect of automatically folding and unfolding the bearing plate 3. Reference Figures 1 to 8When the electromagnet 21 is activated, it generates magnetism, attracting the iron plate 24 to move. The movement of the iron plate 24 drives the first telescopic rod 23, which is fixedly connected to the iron plate 24, to move and compress the telescopic spring 22. At the same time, the movement of the iron plate 24 drives the fixed plate 25, which is fixedly connected to the iron plate 24, to move until the fixed plate 25 disengages from the fixed square hole 17 on the extension plate 16. The extension plate 16 is manually pulled, and the extension plate 16 unfolds through the load-bearing hinge 15, thereby expanding the load-bearing area of ​​the bearing plate 3. The electro-hydraulic push rod 18 is activated, and the electro-hydraulic push rod 18 extends, thereby driving the support plate 19, which is fixedly connected to the electro-hydraulic push rod 18, to move. The support plate 19 moves to contact the lower surface of the extension plate 16 and provides support for the extension plate 16. The electro-hydraulic push rod 18 is then closed, achieving the effect of expanding the load-bearing space and providing stable support. Reference Figures 1 to 8 When it is necessary to fix the retracted extension plate 16, the electromagnet 21 is turned off, and the spring force is used to push the iron plate 24 fixedly connected to the spring to move, thereby driving the fixing plate 25 fixedly connected to the iron plate 24 to move until the fixing plate 25 is inserted into the fixing square hole 17 on the extension plate 16 and remains fixed, thus achieving the effect of automatically locking the position of the extension plate 16.

[0040] The above description of the embodiments enables those skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A folding lifting platform, comprising a carriage (1), a mounting base (2), and a support plate (3), characterized in that, Also includes: A lifting assembly is installed on the mounting base (2) and is used for automatic lifting of the bearing plate (3); A folding component is provided on the lifting component for automatically folding the support plate (3). An extension component is disposed on the support plate (3) to expand the support space of the support plate (3); A fixing component is disposed on the support plate (3) for fixing the extension component; The fixing component includes: The mounting slot (20) is provided on the support plate (3); An electromagnet (21) is mounted on the mounting groove (20) and fixedly connected to the support plate (3); A telescopic spring (22) is disposed on the mounting groove (20) and fixedly connected to the bearing plate (3); The first telescopic rod (23) is set on the mounting groove (20) and fixedly connected to the bearing plate (3); An iron plate (24) is fixedly connected to the first telescopic rod (23), and the iron plate (24) is fixedly connected to the telescopic spring (22); The fixing plate (25) is fixedly connected to the iron plate (24).

2. The folding lifting plate according to claim 1, characterized in that, The lifting assembly includes: The second telescopic rod (4) is fixedly connected to the mounting base (2); The shock-absorbing spring (5) is fixedly connected to the mounting base (2); A multi-stage hydraulic telescopic rod (6) is fixedly connected to the second telescopic rod (4), and the multi-stage hydraulic telescopic rod (6) is fixedly connected to the shock-absorbing spring (5); The lifting frame (7) is fixedly connected to the multi-stage hydraulic telescopic rod (6), and the lifting frame (7) is slidably connected to the mounting base (2).

3. A folding lifting plate according to claim 2, characterized in that, The folding assembly includes: A drive motor (8) is mounted on the lifting frame (7) and is fixedly connected to the lifting frame (7); The drive gear (9) is fixedly connected to the output shaft of the drive motor (8); A rotating shaft (10) is rotatably connected to the lifting frame (7), and the rotating shaft (10) is fixedly connected to the bearing plate (3); Driven gear (11) is fixedly connected to the rotating shaft (10), and driven gear (11) meshes with driving gear (9).

4. A folding lifting plate according to claim 3, characterized in that, The folding assembly also includes: A fixed shaft (12) is disposed on the bearing plate (3) and fixedly connected to the bearing plate (3); The first reinforcing plate (13) is rotatably connected to the fixed shaft (12); The second reinforcing plate (14) is rotatably connected to the first reinforcing plate (13), and the second reinforcing plate (14) is rotatably connected to the lifting frame (7).

5. A folding lifting plate according to claim 4, characterized in that, The extension component includes: A load-bearing hinge (15) is fixedly connected to the load-bearing plate (3); The extension plate (16) is fixedly connected to the load-bearing hinge (15); A fixed square hole (17) is provided on the extension plate (16); An electro-hydraulic actuator (18) is fixedly connected to the bearing plate (3); The support plate (19) is fixedly connected to the electro-hydraulic push rod (18), the support plate (19) is slidably connected to the bearing plate (3), and the support plate (19) is slidably connected to the extension plate (16).

6. A folding lifting plate according to claim 5, characterized in that, The iron plate (24) is slidably connected to the bearing plate (3).

7. A folding lifting plate according to claim 6, characterized in that, The fixing plate (25) is slidably connected to the extension plate (16) and engages with the fixing square hole (17) on the extension plate (16).

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