Lifting platform

Abstract

The utility model discloses a lifting platform which comprises a lifting frame body, a carrying platform installed on the lifting frame body and a lifting mechanism arranged on the peripheral side of the carrying platform and used for driving the carrying platform to ascend and descend, a plurality of lead screw holes are formed in the carrying platform, and the lifting mechanism comprises lead screw rods penetrating through the lead screw holes. The lead screw is arranged on the lifting frame body, the lead screw nut is arranged on the lead screw in a sleeving mode, the lead screw motor is arranged on the lifting frame body, a driven wheel is arranged at the end of the lead screw, the driving end of the lead screw motor is connected with a driving wheel, a first transmission belt is arranged between the driving wheel and the driven wheel for connection, and a second transmission belt is arranged between the driven wheel and the driven wheel for connection. According to the lifting platform, the problems that a traditional lifting platform is uneven in power distribution, unstable in lifting, insufficient in load capacity and the like are solved by adopting the mode that a plurality of driven wheels and a plurality of transmission belts are connected and a redundant driving mode is adopted, meanwhile, the stability and reliability of the platform are enhanced, and space use and energy efficiency performance are optimized.

Description

Technical Field

[0001] This utility model relates to a lifting platform. Background Technology

[0002] Lifting platforms are widely used in industries such as manufacturing, construction, warehousing, and logistics for lifting personnel or goods. Existing lifting platforms primarily rely on electric motors to drive the lifting mechanism, with common drive methods including hydraulic drive and electric screw drive. Among these traditional lifting platforms, the electric screw drive method is more common because of its simple structure, high control precision, and ability to achieve relatively accurate lifting operations.

[0003] However, existing electric screw-driven lifting platforms have the following technical defects and shortcomings:

[0004] In traditional screw drive systems, typically only one motor drives one screw nut for lifting and lowering. This design leads to uneven power distribution during lifting. When the platform load is large or the lifting process is long, a single drive method may not be able to guarantee the synchronous lifting and lowering of each screw, thus affecting the stability and accuracy of the platform, and may even cause jamming or skew during the lifting process.

[0005] Due to the friction between the screw and nut, traditional lifting platforms experience resistance during lifting, especially under heavy loads or prolonged operation, making it difficult to ensure stable lifting. Furthermore, the motor's output power is prone to energy loss during transmission, leading to inconsistent lifting speeds and impacting work efficiency and the platform's lifespan.

[0006] In high-load or multi-point load applications, traditional lifting platforms often struggle to effectively distribute the load. Due to their single drive method, the output power of the motor and the load-bearing capacity of the transmission system are often limited, which can easily lead to poor stability of the lifting platform when carrying heavy objects, potentially causing platform tilting or mechanical failure.

[0007] Traditional lifting platforms typically rely on a single motor and a single screw and nut system for drive. If the motor or screw fails, the platform's lifting function will completely fail, resulting in low equipment reliability. Especially during high-frequency use or in harsh environments, a single point of failure can significantly impact the platform's normal operation, increasing repair and maintenance costs.

[0008] In scenarios requiring high space utilization or where installation space is limited, traditional lifting platform designs may result in insufficient space utilization due to their bulky structure. This is especially true regarding the arrangement of drive components, which typically occupy a significant amount of space, limiting the platform's applicability and impacting the flexibility and adaptability of the lifting system. Utility Model Content

[0009] To address the shortcomings of existing technologies, this utility model proposes a lifting platform that solves the problems of uneven power distribution, unstable lifting, and insufficient load capacity in traditional lifting platforms by adopting multiple driven wheels, multiple transmission belts, and redundant drive methods. At the same time, it enhances the stability and reliability of the platform and optimizes space utilization and energy efficiency.

[0010] The technical solution adopted by this utility model to solve its technical problem is:

[0011] A lifting platform includes a lifting frame, a mounting platform installed on the lifting frame, and a lifting mechanism disposed around the mounting platform for driving the mounting platform to lift. The mounting platform has a plurality of lead screw holes. The lifting mechanism includes a lead screw threaded through each lead screw hole, a lead screw nut fitted on the lead screw thread and fixedly connected to the mounting platform, and a lead screw motor disposed on the lifting frame. The end of the lead screw thread is provided with a driven wheel. The drive end of the lead screw motor is connected to a drive wheel. There is one or more driven wheels. A first transmission belt connects the drive wheel and the driven wheel, and a second transmission belt connects the driven wheels.

[0012] Preferably, the lifting frame includes a vertically arranged support frame and a support top plate disposed on the top of the support frame.

[0013] Preferably, the lead screw motor is mounted on the bottom surface of the support top plate and is fixed to the support top plate with screws.

[0014] Preferably, the lead screw adjacent to the lead screw motor is provided with two driven wheels arranged in an upper and lower stack, one of which is connected to the driving wheel by a first transmission belt, and the other driven wheel is connected to the driven wheels on other lead screws by a second transmission belt.

[0015] Preferably, the driven wheel includes an upper wheel body disposed above the support top plate and a lower wheel body disposed at the bottom of the support top plate.

[0016] Preferably, each lower wheel body is provided with a corresponding upper wheel body, and the upper wheel body and the corresponding lower wheel body are connected by a lead screw.

[0017] Preferably, the second transmission belt is provided with four sets, namely an upper transmission belt connecting two upper wheel bodies that are adjacent in the longitudinal direction, and a lower transmission belt connecting two lower wheel bodies that are adjacent in the transverse direction.

[0018] Preferably, both the driving wheel and the driven wheel are provided with gear teeth, and both the first transmission belt and the second transmission belt are provided with toothed surfaces that mesh with the gear teeth.

[0019] The beneficial effects of this utility model are:

[0020] Traditional lifting platforms typically use a single electric motor drive, which can lead to uneven power distribution, unstable lifting, or excessively slow speeds. This solution, however, effectively improves power transmission efficiency and uniformity by incorporating multiple driven pulleys, a driving pulley, and transmission belts (such as first and second transmission belts) into the lifting mechanism. The use of multiple driven pulleys allows the driving force of the lifting platform to be distributed more evenly across each lead screw, thus achieving smooth lifting operations and avoiding the uneven lifting phenomena that can occur with a single drive method.

[0021] By using multiple drive belts (first and second drive belts) to connect multiple driven pulleys, the load borne by the lifting platform during lifting can be effectively distributed, reducing the burden on a single transmission component and enhancing the stability and safety of the platform under heavy loads. This multi-pull, multi-belt design can effectively avoid mechanical failures caused by uneven driving or excessive load from a single drive system.

[0022] Using multiple driven pulleys and multiple drive belts provides a redundant drive system, ensuring the platform continues to operate normally even if one drive component fails. This significantly improves the reliability and safety of the lifting platform, especially in applications requiring high-frequency use or heavy-duty operation.

[0023] This solution cleverly arranges the lead screw, drive belt, and pulley system to effectively save space and adapt to lifting platforms of different sizes and uses. In applications with limited space, this design makes the lifting system more compact while improving the flexibility and adaptability of the drive system.

[0024] Traditional single-screw drive systems can experience significant energy loss during power transmission, especially over long distances or under heavy loads. However, by using multiple drive belts connecting multiple pulley sets, the power transmission path can be optimized, reducing energy loss during transmission and thus improving the overall energy efficiency of the lifting system. Attached Figure Description

[0025] Figure 1 This is a three-dimensional view of the overall structure of a lifting platform according to the present invention;

[0026] Figure 2 This is a side view of the overall structure of a lifting platform according to the present invention. Specific implementation methods

[0027] The principles and features of this utility model are described below with reference to the accompanying drawings. The examples given are for illustrative purposes only and are not intended to limit the scope of this utility model. The utility model is described more specifically in the following paragraphs by way of example with reference to the accompanying drawings. The advantages and features of this utility model will become clearer from the following description and claims. It should be noted that the drawings are all in a very simplified form and use non-precise proportions, and are only used to facilitate and clarify the illustration of the embodiments of this utility model.

[0028] In the description of this utility model, it should be understood that the terms "upper," "lower," "front," "rear," "left," "right," "vertical," and "horizontal," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this utility model and for 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. Furthermore, the terms "first," "second," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, features defined with "first," "second," etc., may explicitly or implicitly include one or more of that feature. In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installed," "connected," and "joined" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication between two components.

[0029] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items. Example

[0030] See Figure 1-2As shown, a lifting platform includes a lifting frame 1, a mounting platform 2 installed on the lifting frame 1, and a lifting mechanism 3 disposed around the mounting platform 2 for driving the mounting platform 2 to lift. The mounting platform 2 is provided with a plurality of lead screw holes 4. The lifting mechanism 3 includes a lead screw 31 passing through each lead screw hole 4, a lead screw nut 32 fitted on the lead screw 31 and fixedly connected to the mounting platform 2, and a lead screw motor 33 disposed on the lifting frame 1. The end of the lead screw 31 is provided with a driven wheel 5. The drive end of the lead screw motor 33 is connected to a drive wheel 6. There is one or more driven wheels 5. A first transmission belt 7 is provided between the drive wheel 6 and the driven wheel 5. A second transmission belt 8 is provided between the driven wheels 5.

[0031] By setting multiple driven pulleys 5 at the end of the lead screw 31 and connecting the driven pulleys 5 with a second transmission belt 8, the lifting and lowering movements of each lead screw 31 can be effectively synchronized. This design ensures that multiple screws maintain a consistent lifting speed during the driving process, thus avoiding the problem of asynchronous lifting caused by a single motor drive in traditional lifting platforms. With improved synchronization, the lifting process of the platform is more stable, ensuring the smoothness and accuracy of the platform 2 during lifting, especially under heavy loads, reducing the risk of platform tilting or jamming.

[0032] The system incorporates multiple driven pulleys and a drive belt connection, ensuring not only synchronized lifting but also even load distribution during the process. When the platform carries large items, the coordinated operation of multiple screws enhances the overall load-bearing capacity, preventing equipment malfunction or unstable lifting due to excessive pressure on a single screw. In this way, the lifting platform maintains high stability and safety under heavy or uneven loads, adapting to more complex working environments.

[0033] The dual drive belt design in this scheme (the first drive belt 7 connects the driving pulley 6 and the driven pulley 5, and the second drive belt 8 connects multiple driven pulleys 5) enhances the system's reliability. Even if one drive belt fails or is damaged, the other drive belt can still provide power transmission, ensuring that the lifting platform will not completely fail due to a single point of failure. Compared to traditional single-drive lifting platform systems, this multi-drive belt and multi-pull design can significantly reduce the risk of system failure, extend service life, and reduce maintenance frequency and costs.

[0034] The lifting frame 1 includes a vertically arranged support frame 11 and a support top plate 12 located on the top of the support frame 11; the lead screw motor 33 is installed on the bottom surface of the support top plate 12 and is fixed to the support top plate 12 with screws; the lead screw 31 adjacent to the lead screw motor 33 is provided with two driven wheels 5 arranged in an upper and lower stack, and one of the driven wheels 5 is connected to the driving wheel 6 by a first transmission belt 7, and the other driven wheel 5 is connected to the driven wheels 5 on the other lead screw 31 by a second transmission belt 8.

[0035] Mounting the lead screw motor 33 on the bottom surface of the support top plate 12 and fixing it to the support top plate 12 with screws effectively saves space and makes the entire system more compact. This installation method reduces the footprint of external components, allowing the lifting platform to function in a limited space, making it particularly suitable for occasions with limited space or requiring a highly compact layout. By mounting the motor at the top, the space below the platform is avoided, providing more usable space for placing other equipment or items.

[0036] The design employs two driven pulleys 5 arranged in a stacked configuration. One driven pulley 5 is connected to the driving pulley 6 via a first transmission belt 7, while the other driven pulley 5 is connected to other driven pulleys 5 on the lead screw 31 via a second transmission belt 8. By distributing the load among multiple transmission belts and driven pulleys 5, the burden on a single transmission belt is reduced, power transmission efficiency is improved, and the risk of overload is avoided. If one transmission belt fails, the other transmission belt can still maintain the platform's lifting function, preventing complete system failure. This redundant design enhances the system's reliability and stability, making it particularly suitable for industrial or heavy-duty scenarios requiring high reliability.

[0037] The stacked driven pulleys 5 not only optimize the spatial structure but also improve the synchronization between the multiple lead screws 31. A second transmission belt connects the second driven pulley 5 to the driven pulleys 5 on the other lead screws 31, enabling the multiple lead screws 31 to operate more evenly and avoiding asynchronous lifting and lowering problems caused by a single drive. During prolonged use, good synchronization effectively reduces mechanical wear caused by uneven lifting and lowering, thereby extending the system's service life.

[0038] The driven wheel 5 includes an upper wheel body disposed above the support top plate 12 and a lower wheel body disposed at the bottom of the support top plate 12; each lower wheel body is correspondingly provided with an upper wheel body, and the upper wheel body and the corresponding lower wheel body are connected by a lead screw 31.

[0039] The design of connecting the upper and lower wheels via a lead screw 31 allows them to move synchronously, avoiding tilting or uneven lifting that could occur with the operation of a single wheel. This significantly improves the stability of the entire lifting system. Especially in applications requiring high precision and heavy loads, this design effectively ensures the platform remains balanced during lifting, reducing mechanical failures or damage caused by instability.

[0040] The lead screw 31, as the driving element connecting the upper and lower wheels, provides higher transmission accuracy and lower friction. Through the transmission of the lead screw 31, the synchronicity of the upper and lower wheels during lifting is ensured, avoiding deviations or wear problems caused by asynchronous movement. Especially in equipment or systems with high precision requirements, this design ensures consistent movement of the upper and lower wheels, thereby guaranteeing smooth lifting of the platform.

[0041] As a connecting component, the lead screw 31 typically has a lower coefficient of friction than traditional gear or belt drives, especially under heavy loads. This low-friction transmission method effectively reduces wear between mechanical parts and extends the system's service life. Furthermore, the lead screw 31 is designed with a self-locking function, remaining fixed even when the machine is stopped, preventing slippage due to its own weight, thus improving the safety and durability of the equipment.

[0042] The second transmission belt 8 is provided with four sets, namely an upper transmission belt connecting two adjacent upper wheel bodies in the longitudinal direction, and a lower transmission belt connecting two adjacent lower wheel bodies in the transverse direction; both the driving wheel 6 and the driven wheel 5 are provided with gear teeth, and both the first transmission belt and the second transmission belt 8 are provided with tooth surfaces that mesh with the gear teeth.

[0043] By incorporating toothed surfaces between the conveyor belt and the gear teeth, the transmission between the driving pulley 6 and the driven pulley 5 becomes more precise. Compared to traditional flat belt drives, gear meshing transmission offers higher transmission efficiency and lower slip ratio, ensuring more stable and error-free motion transmission. This is particularly important for lifting systems, as any transmission deviation can lead to uneven or unstable platform lifting, thus affecting the overall system's accuracy and reliability.

[0044] Because gear drives can distribute the pressure during transmission, their meshing design can withstand larger loads than ordinary flat belt drives. This is especially important in heavy-duty lifting platform applications where the system may need to transmit significant forces. Gear drives effectively prevent slippage, tooth skipping, or failure caused by high loads, thus improving system durability and stability and extending its service life.

[0045] This design utilizes four sets of conveyor belts, with the upper and lower belts connecting the longitudinal and transverse wheels respectively, facilitating multi-directional synchronous transmission. This configuration ensures coordinated movement among the multiple wheels, preventing asynchrony during lifting due to unidirectional transmission. Especially in complex lifting or mechanical motion requirements, good synchronization is crucial for smooth platform operation, preventing equipment damage or unstable lifting caused by asynchrony.

[0046] The above embodiments of this utility model are not intended to limit the scope of protection of this utility model. The implementation of this utility model is not limited thereto. All other modifications, substitutions or alterations made to the above structure of this utility model based on the above content of this utility model and in accordance with the common technical knowledge and conventional means in the field, without departing from the basic technical idea of ​​this utility model, shall fall within the scope of protection of this utility model.

Claims

1. A lifting platform, characterized in that: The device includes a lifting frame, a mounting platform installed on the lifting frame, and a lifting mechanism located around the mounting platform for driving the mounting platform to move up and down. The mounting platform has several lead screw holes. The lifting mechanism includes a lead screw threaded through each lead screw hole, a lead screw nut fitted on the lead screw thread and fixedly connected to the mounting platform, and a lead screw motor mounted on the lifting frame. The end of the lead screw thread has a driven wheel. The drive end of the lead screw motor is connected to a drive wheel. There is one or more driven wheels. A first transmission belt connects the drive wheel and the driven wheel, and a second transmission belt connects the driven wheels.

2. The lifting platform according to claim 1, characterized in that: The lifting frame includes a vertically arranged support frame and a support top plate located on top of the support frame.

3. The lifting platform according to claim 2, characterized in that: The lead screw motor is installed on the bottom surface of the support top plate and is fixed to the support top plate with screws.

4. The lifting platform according to claim 3, characterized in that: The lead screw adjacent to the lead screw motor has two driven wheels arranged in an upper and lower stack. One driven wheel is connected to the driving wheel by a first transmission belt, and the other driven wheel is connected to the driven wheels on other lead screws by a second transmission belt.

5. The lifting platform according to claim 4, characterized in that: The driven wheel includes an upper wheel body disposed above the support top plate and a lower wheel body disposed at the bottom of the support top plate.

6. The lifting platform according to claim 4, characterized in that: Each lower wheel body has a corresponding upper wheel body, and the upper wheel body and the corresponding lower wheel body are connected by a lead screw.

7. The lifting platform according to claim 4, characterized in that: The second transmission belt is provided with four sets: an upper transmission belt connecting two adjacent upper wheel bodies in the longitudinal direction, and a lower transmission belt connecting two adjacent lower wheel bodies in the transverse direction.

8. The lifting platform according to claim 7, characterized in that: Both the driving wheel and the driven wheel are provided with gear teeth, and both the first transmission belt and the second transmission belt are provided with toothed surfaces that mesh with the gear teeth.

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