Lifting platform

Abstract

The invention provides a lifting table which comprises a base, a table top, a hinge shaft and a plurality of scissor arm sets arranged between the base and the table top, and each scissor arm set comprises two scissor arms hinged to each other through the hinge shaft to form an X shape; driving blocks are arranged on the left side and the right side of the hinged shaft correspondingly, and the two driving blocks can drive the table top to move in the vertical direction through movement in the left-right direction. A rotating rod and two movable rods; the hinge shaft penetrates through the middle part of the rotating rod; one end of the rotating rod is hinged to one end of a movable rod, and the other end of the movable rod is hinged to a driving block; the other end of the rotating rod is hinged to one end of the other movable rod, and the other end of the movable rod is hinged to the other driving block. The lifting table can prevent the table top from inclining.

Description

Technical Field

[0001] This invention relates to the field of lifting technology, and more particularly to a lifting platform. Background Technology

[0002] A lifting platform with scissor arms is a type of lifting and loading / unloading equipment widely used in industrial and commercial fields. Its core structure is the scissor arms, which raise and lower the platform through the crisscrossing extension and retraction of multiple scissor arms. During operation, a belt typically provides power to extend and retract the scissor arms. As the scissor arms extend, the platform rises; as they retract, the platform lowers.

[0003] This type of lifting platform has many advantages, such as its compact structure, which takes up little space when folded up, making it easy to store and transport; its strong load-bearing capacity, which can smoothly lift heavy goods or personnel; and its stable lifting process, because the scissor mechanism keeps the platform level during lifting, ensuring operational safety.

[0004] A scissor arm assembly typically consists of two scissor arms hinged together in an X shape by a hinge shaft. This means there's a hole between the two scissor arms, through which the hinge shaft passes, causing the two scissor arms to cross. In actual use, the following situations may occur: the hole size is larger than the hinge shaft size, or the scissor arms may bend. This can cause the two ends of the two scissor arms on the first side of the hinge shaft to move closer together, while the two ends on the second side of the hinge shaft move further apart, meaning the platform tilts towards the first side.

[0005] Therefore, how to avoid the tilting of the scissor arm assembly's table surface has become an urgent problem to be solved. Summary of the Invention

[0006] The purpose of this invention is to provide a lifting platform.

[0007] To achieve one of the aforementioned objectives, one embodiment of the present invention provides a lifting platform, comprising: a base, a platform, a hinge shaft, and multiple scissor arm assemblies disposed between the base and the platform. The multiple scissor arm assemblies are symmetrically arranged in the front-rear direction. Each scissor arm assembly includes a first scissor arm and a second scissor arm hinged together in an X-shape by the hinge shaft. A first driving block is disposed on the left side of the hinge shaft. The approach of the left portions of the first and second scissor arms can drive the first driving block to move to the left, and the leftward movement of the first driving block can drive the left portions of the first and second scissor arms to move closer together. A second driving block is disposed on the right side of the hinge shaft. The right sides of the second scissor arms approaching each other can drive the second drive block to move to the right, and the rightward movement of the second drive block can drive the right sides of the first and second scissor arms to approach each other; a rotating rod, a first movable rod, and a second movable rod; the hinge shaft passes through the middle of the rotating rod, and the rotating rod can rotate around the hinge shaft; the first end of the rotating rod is hinged to the first end of the first movable rod, and the second end of the first movable rod is hinged to the first drive block; the second end of the rotating rod is hinged to the first end of the second movable rod, and the second end of the second movable rod is hinged to the second drive block; in the rotating rod, the first movable rod, and the second movable rod, the first and second ends are oppositely arranged ends.

[0008] As a further improvement of one embodiment of the present invention, the first driving block includes: a first vertical plate, a first connecting rod, and a second connecting rod; the upper end of the first vertical plate is hinged to the first end of the first connecting rod, and the second end of the first connecting rod is movably connected to the portion of the first scissor arm located on the left side of the hinge axis; the lower end of the first vertical plate is hinged to the first end of the second connecting rod, and the second end of the second connecting rod is movably connected to the portion of the second scissor arm located on the left side of the hinge axis; the second end of the first movable rod is hinged to the second connecting rod; the second driving block includes: a second vertical plate, a third connecting rod, and a fourth connecting rod; the upper end of the second vertical plate is hinged to the first end of the third connecting rod, and the second end of the third connecting rod is movably connected to the portion of the first scissor arm located on the right side of the hinge axis; the lower end of the second vertical plate is hinged to the first end of the fourth connecting rod, and the second end of the fourth connecting rod is movably connected to the portion of the second scissor arm located on the right side of the hinge axis; the second end of the first movable rod is hinged to the third connecting rod; among the first, second, third, and fourth connecting rods, the first and second ends are oppositely arranged ends.

[0009] As a further improvement of one embodiment of the present invention, the first connecting rod and the second connecting rod intersect each other in an X shape, and the third connecting rod and the fourth connecting rod intersect each other in an X shape.

[0010] As a further improvement of one embodiment of the present invention, it also includes: a driving device, which is capable of driving the first and second vertical plates to move in the left-right direction.

[0011] As a further improvement of one embodiment of the present invention, the driving device is a motor.

[0012] As a further improvement of one embodiment of the present invention, the right end of the first scissor arm is rotatably connected to the table surface, and the left end is able to slide along the base in the left and right directions; the right end of the second scissor arm is rotatably connected to the base, and the left end is able to slide along the table surface in the left and right directions.

[0013] As a further improvement of one embodiment of the present invention, a first slide rail extending in the left-right direction is provided on the base, and the left end of the first scissor arm can slide along the first slide rail; a second slide rail extending in the left-right direction is provided on the table, and the left end of the second scissor arm can slide along the second slide rail.

[0014] As a further improvement of one embodiment of the present invention, the number of scissor arm assemblies is two.

[0015] As a further improvement of one embodiment of the present invention, pulleys are provided at the right ends of both the first scissor arm and the second scissor arm; the pulleys on the first scissor arm can slide along the first slide rail; the pulleys on the second scissor arm can slide along the second slide rail.

[0016] As a further improvement of one embodiment of the present invention, in the first scissor arm and the second scissor arm, the cross-sectional dimension of the portion closer to the middle is larger.

[0017] Compared to existing technologies, the technical advantages of this invention are as follows: This invention provides a lifting platform, comprising: a base, a platform, a hinge shaft, and multiple scissor arm assemblies disposed between the base and the platform. Each scissor arm assembly includes two scissor arms hinged together in an X-shape via the hinge shaft. Drive blocks are provided on both sides of the hinge shaft, and the left-right movement of the two drive blocks can drive the platform to move up and down. A rotating rod and two movable rods are also included. The hinge shaft passes through the middle of the rotating rod. One end of the rotating rod is hinged to one end of a movable rod, and the other end of the movable rod is hinged to a drive block. The other end of the rotating rod is hinged to one end of another movable rod, and the other end of the movable rod is hinged to another drive block. This lifting platform can prevent the platform from tilting. Attached Figure Description

[0018] Figure 1 This is a structural diagram of the embodiment including a base, a platform, a hinge shaft, a first drive block, and a second drive block; Figure 2 This is a schematic diagram of the structure including the lifting platform in this embodiment. Detailed Implementation

[0019] The present invention will now be described in detail with reference to the embodiments shown in the accompanying drawings. However, these embodiments do not limit the present invention, and any structural, methodological, or functional modifications made by those skilled in the art based on these embodiments are included within the scope of protection of the present invention.

[0020] The terms used herein, such as “above,” “over,” “below,” and “under,” indicating spatial relative position, are for illustrative purposes to describe the relationship of one unit or feature relative to another unit or feature as shown in the accompanying drawings. These terms may be intended to include different orientations of the device in use or operation other than those shown in the figures. For example, if the device in the figures is flipped, a unit described as being “below” or “under” another unit or feature would be “above” that unit or feature. Therefore, the exemplary term “below” can encompass both above and below orientations. The device may be oriented in other ways (rotated 90 degrees or otherwise), and the spatially related descriptive terms used herein will be interpreted accordingly.

[0021] This invention provides a lifting platform, such as... Figure 1 and Figure 2 As shown, it includes: The system comprises a base 1, a platform 2, a hinge shaft 313, and multiple scissor arm assemblies 3 disposed between the base 1 and the platform 2. The scissor arm assemblies 3 are symmetrically arranged in the front-rear direction. Each scissor arm assembly 3 includes a first scissor arm 311 and a second scissor arm 312 hinged together in an X-shape by the hinge shaft 313. When the scissor arm assemblies 3 are closed, the platform 2 moves upward; when the scissor arm assemblies 3 are open, the platform 2 moves downward. Optionally, in... Figure 2 In the scenario shown, there are two scissor arm assemblies 3, which are symmetrically arranged in the front-to-back direction.

[0022] A first driving block 321 is provided on the left side of the hinge shaft 313. The approach of the left portions of the first and second scissor arms can drive the first driving block 321 to move to the left, and the movement of the first driving block 321 to the left can drive the left portions of the first and second scissor arms to move closer together. A second driving block 322 is provided on the right side of the hinge shaft 313. The approach of the right portions of the first and second scissor arms can drive the second driving block 322 to move to the right, and the movement of the second driving block 322 to the right can drive the right portions of the first and second scissor arms to move closer together. Rotating rod 41, the first A movable rod 421 and a movable rod 422 are provided; the hinge shaft 313 passes through the middle of the rotating rod 41, and the rotating rod 41 can rotate around the hinge shaft 313; the first end of the rotating rod 41 is hinged to the first end of the first movable rod 421, and the second end of the first movable rod 421 is hinged to the first drive block 321; the second end of the rotating rod 41 is hinged to the first end of the second movable rod 422, and the second end of the second movable rod 422 is hinged to the second drive block 322; in the rotating rod 41, the first movable rod 421 and the second movable rod 422, the first and second ends are oppositely arranged.

[0023] Here, when the tabletop 2 tilts to the left (i.e., the left sides of the first and second scissor arms move closer together), the first drive block 321 moves to the left. Under the action of the rotating rod 41, the first movable rod 421, and the second movable rod 422, the second drive block 322 moves to the right, thus driving the right sides of the first and second scissor arms to move closer together. It is understood that the left and right sides of the first and second scissor arms move downwards synchronously. Furthermore, if the right sides of the first and second scissor arms are stuck and cannot move downwards, the left sides of the first and second scissor arms also cannot move downwards. Therefore, this prevents the tabletop 2 from tilting.

[0024] Similarly, when the tabletop 2 tilts to the right (i.e., the right sides of the first and second scissor arms move closer together), the second drive block 322 moves to the right. Under the action of the rotating rod 41, the first movable rod 421, and the second movable rod 422, the first drive block 321 moves to the left, thus driving the left sides of the first and second scissor arms to move closer together. Understandably, the left and right sides of the first and second scissor arms move downwards synchronously. If the left sides of the first and second scissor arms are stuck and cannot move downwards, the right sides of the first and second scissor arms also cannot move downwards. Therefore, this prevents the tabletop 2 from tilting.

[0025] In this embodiment, the first driving block 321 includes: a first vertical plate 3211, a first connecting rod 3212, and a second connecting rod 3213; the upper end of the first vertical plate 3211 is hinged to the first end of the first connecting rod 3212, and the second end of the first connecting rod 3212 is movably connected to the portion of the first scissor arm 311 located on the left side of the hinge shaft 313; the lower end of the first vertical plate 3211 is hinged to the first end of the second connecting rod 3213, and the second end of the second connecting rod 3213 is movably connected to the portion of the second scissor arm 312 located on the left side of the hinge shaft 313; the second end of the first movable rod 421 is hinged to the second connecting rod 3213; here, when the first vertical plate 3211 moves to the left, the left sides of the first and second scissor arms move closer to each other; when the first vertical plate 3211 moves to the right, the left sides of the first and second scissor arms move further apart. Similarly, when the left sides of the first and second scissor arms move closer to each other, the first vertical plate 3211 moves to the left; when the left sides of the first and second scissor arms move further apart, the first vertical plate 3211 moves to the right.

[0026] The second drive block 322 includes: a second vertical plate 3221, a third connecting rod 3222, and a fourth connecting rod 3223; the upper end of the second vertical plate 3221 is hinged to the first end of the third connecting rod 3222, and the second end of the third connecting rod 3222 is movably connected to the portion of the first scissor arm 311 located on the right side of the hinge shaft 313; the lower end of the second vertical plate 3221 is hinged to the first end of the fourth connecting rod 3223, and the second end of the fourth connecting rod 3223 is movably connected to the portion of the second scissor arm 312 located on the right side of the hinge shaft 313; the second end of the first movable rod 421 is hinged to the third connecting rod 3222; when the second vertical plate 3221 moves to the right, the right sides of the first and second scissor arms move closer to each other; when the second vertical plate 3221 moves to the left, the right sides of the first and second scissor arms move further apart. Similarly, when the right sides of the first and second scissor arms move closer to each other, the second vertical plate 3221 moves to the right; when the right sides of the first and second scissor arms move further apart, the first vertical plate 3211 moves to the left.

[0027] In the first, second, third and fourth connecting rods, the first and second ends are positioned opposite each other.

[0028] In this embodiment, the first connecting rod 3212 and the second connecting rod 3213 intersect each other in an X shape, and the third connecting rod 3222 and the fourth connecting rod 3223 intersect each other in an X shape.

[0029] In this embodiment, a driving device 5 is also included, which is capable of driving the first and second vertical plates to move in the left and right directions.

[0030] In this embodiment, the driving device 5 is a motor. Here, a belt 6 is provided in the lifting platform. When the motor rotor rotates, it can tighten or loosen the belt 6, thereby driving the first and second vertical plates to move in the left and right directions.

[0031] In this embodiment, the right end of the first scissor arm 311 is rotatably connected to the table 2, and the left end can slide along the base 1 in the left and right directions; the right end of the second scissor arm 312 is rotatably connected to the base 1, and the left end can slide along the table 2 in the left and right directions.

[0032] In this embodiment, a first slide rail 11 extending in the left-right direction is provided on the base 1, and the left end of the first scissor arm 311 can slide along the first slide rail 11; a second slide rail 21 extending in the left-right direction is provided on the table 2, and the left end of the second scissor arm 312 can slide along the second slide rail 21.

[0033] In this embodiment, there are two scissor arm assemblies 3.

[0034] In this embodiment, pulleys 314 are provided at the right ends of the first scissor arm 311 and the second scissor arm 312; the pulleys 314 on the first scissor arm 311 can slide along the first slide rail 11; the pulleys 314 on the second scissor arm 312 can slide along the second slide rail 21.

[0035] In this embodiment, the cross-sectional dimensions of the portion closer to the center in the first scissor arm 311 and the second scissor arm 312 are larger. Here, the portion closer to the center in both the first and second scissor arms bears a greater force, therefore it needs to be thicker.

[0036] It should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This way of describing the specification is only for clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

[0037] The detailed descriptions listed above are merely specific descriptions of feasible embodiments of the present invention, and are not intended to limit the scope of protection of the present invention. All equivalent embodiments or modifications made without departing from the spirit of the present invention should be included within the scope of protection of the present invention.

Claims

1. A lifting platform, characterized in that, include: The base (1), the table (2), the hinge shaft (313) and a plurality of scissor arm assemblies (3) are arranged between the base (1) and the table (2). The plurality of scissor arm assemblies (3) are symmetrically arranged in the front-back direction. Each scissor arm assembly (3) includes a first scissor arm (311) and a second scissor arm (312) that are hinged to each other in an X shape by the hinge shaft (313). A first drive block (321) is provided on the left side of the hinge shaft (313). The mutual approach of the left sides of the first and second scissor arms can drive the first drive block (321) to move to the left. The leftward movement of the first drive block (321) can drive the left sides of the first and second scissor arms to move closer to each other. A second drive block (322) is provided on the right side of the hinge shaft (313); the mutual approach of the right side portions of the first and second scissor arms can drive the second drive block (322) to move to the right, and the right movement of the second drive block (322) can drive the right side portions of the first and second scissor arms to move closer to each other; Rotating rod (41), first movable rod (421) and second movable rod (422); the hinge shaft (313) passes through the middle of the rotating rod (41), and the rotating rod (41) can rotate about the hinge shaft (313); The first end of the rotating rod (41) is hinged to the first end of the first movable rod (421), and the second end of the first movable rod (421) is hinged to the first driving block (321). The second end of the rotating rod (41) is hinged to the first end of the second movable rod (422), and the second end of the second movable rod (422) is hinged to the second drive block (322); in the rotating rod (41), the first movable rod (421) and the second movable rod (422), the first and second ends are oppositely arranged.

2. The lifting platform according to claim 1, characterized in that, The first drive block (321) includes: a first vertical plate (3211), a first connecting rod (3212), and a second connecting rod (3213); the upper end of the first vertical plate (3211) is hinged to the first end of the first connecting rod (3212), and the second end of the first connecting rod (3212) is movably connected to the portion of the first scissor arm (311) located on the left side of the hinge shaft (313); the lower end of the first vertical plate (3211) is hinged to the first end of the second connecting rod (3213), and the second end of the second connecting rod (3213) is movably connected to the portion of the second scissor arm (312) located on the left side of the hinge shaft (313); the second end of the first movable rod (421) is hinged to the second connecting rod (3213). The second drive block (322) includes: a second vertical plate (3221), a third connecting rod (3222), and a fourth connecting rod (3223); the upper end of the second vertical plate (3221) is hinged to the first end of the third connecting rod (3222), and the second end of the third connecting rod (3222) is movably connected to the portion of the first scissor arm (311) located on the right side of the hinge shaft (313); the lower end of the second vertical plate (3221) is hinged to the first end of the fourth connecting rod (3223), and the second end of the fourth connecting rod (3223) is movably connected to the portion of the second scissor arm (312) located on the right side of the hinge shaft (313); the second end of the first movable rod (421) is hinged to the third connecting rod (3222). In the first, second, third and fourth connecting rods, the first and second ends are positioned opposite each other.

3. The lifting platform according to claim 2, characterized in that, The first connecting rod (3212) and the second connecting rod (3213) intersect each other in an X shape, and the third connecting rod (3222) and the fourth connecting rod (3223) intersect each other in an X shape.

4. The lifting platform according to claim 2, characterized in that, Also includes: The driving device (5) is capable of driving the first and second vertical plates to move in the left and right directions.

5. The lifting platform according to claim 4, characterized in that, The driving device (5) is a motor.

6. The lifting platform according to claim 1, characterized in that, The right end of the first scissor arm (311) is rotatably connected to the table (2), and the left end can slide along the base (1) in the left and right directions. The right end of the second scissor arm (312) is rotatably connected to the base (1), and the left end can slide along the table (2) in the left and right directions.

7. The lifting platform according to claim 1, characterized in that, A first slide rail (11) extending in the left and right direction is provided on the base (1), and the left end of the first scissor arm (311) can slide along the first slide rail (11). A second slide rail (21) extending in the left and right direction is provided on the table (2), and the left end of the second scissor arm (312) can slide along the second slide rail (21).

8. The lifting platform according to claim 1, characterized in that, The number of scissor arm groups (3) is two.

9. The lifting platform according to claim 1, characterized in that, Both the right end of the first scissor arm (311) and the second scissor arm (312) are provided with pulleys (314). The pulley (314) on the first scissor arm (311) can slide along the first slide rail (11); The pulley (314) on the second scissor arm (312) can slide along the second slide rail (21).

10. The lifting platform according to claim 1, characterized in that, In the first scissor arm (311) and the second scissor arm (312), the cross-sectional dimensions of the portion closer to the middle are larger.

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