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Single-screw-control three-arm type lifting platform based on gear linkage

A technology of gear linkage and lifting platform, which is applied in the direction of lifting frame and lifting device, which can solve the problems of high cost and unfavorable manual operation, and achieve the effects of improving stability, stable and controllable lifting function, great elasticity and strength

Active Publication Date: 2017-09-29
NORTHWESTERN POLYTECHNICAL UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, most of the existing scissor-type lifting devices are based on a single screw drive device, which requires a lot of force to drive the entire mechanism. Such a lifting platform structure is not conducive to manual operation or requires high-power motor control.

Method used

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  • Single-screw-control three-arm type lifting platform based on gear linkage
  • Single-screw-control three-arm type lifting platform based on gear linkage
  • Single-screw-control three-arm type lifting platform based on gear linkage

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Embodiment Construction

[0034] The gear linkage-based single-screw control three-arm lifting platform proposed by the present invention includes a top plate and a bottom plate supported by three arms. The top and bottom plates have the same size and shape. The spiral pattern on the outer surface of the slab is designed to increase traction and friction with ground and raised surfaces. For the shape of the top and bottom plates, several designs such as circle, triangle and star are proposed.

[0035] Both the top and bottom plates have three hinge points for connecting the plate to the arm. Each arm consists of an upper and lower link, the upper arm link connects the top plate to the upper slot of the elbow bracket, and the lower arm link connects the lower slot of the elbow bracket to the bottom plate. The load at the top of the platform is carried by three booms and elbow brackets. The boom can be folded to form a scissor movement, which is responsible for the lifting movement of the lifting plat...

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Abstract

The invention provides a single-screw-control three-arm type lifting platform based on gear linkage. The single-screw-control three-arm type lifting platform based on the gear linkage comprises a top plate, a bottom plate, three arm rods, three lead screws and a center gear unit. The two ends of each arm rod are matched with the top plate and the bottom plate in a hinged mode. Each arm rod comprises an upper arm connecting rod, a lower arm connecting rod and an elbow-shaped bracket. The middle of each elbow-shaped bracket is matched with the corresponding lead screw. When the lead screws rotate, the elbow-shaped brackets can be driven to move, so that the upper arm connecting rods and the lower arm connecting rods do scissor-type movement in the rotating process. The center gear unit comprises two hexagonal rings and six oblique gears. The two hexagonal rings are assembled coaxially in an embedded-sleeved mode, the six oblique gears are clamped between the two hexagonal rings, and every two adjacent oblique gears mesh mutually. The three lead screws are fixedly connected with the three corresponding oblique gears which are arranged at intervals in a coaxial mode, one of the rest of three oblique gears is connected with an external power source, and the other two oblique gears are transmission gears. The single-screw-control three-arm type lifting platform based on the gear linkage can be used for manual operation or electric operation, and the better stability and the higher working efficiency are achieved.

Description

technical field [0001] The invention relates to the technical field of mechanical equipment, in particular to a single-screw control three-arm lifting platform based on gear linkage. Background technique [0002] A lift platform is a special type of equipment commonly used for heavy-duty vertical lifting and height adjustment for industrial and military purposes. It can also be used in medical lifting beds, patient wheelchairs, robot bases, lifting vehicles, or as a variable height platform for measuring equipment and orientation alignment devices. [0003] At present, the scissor-based lifting platform has the characteristics of large folding ratio, compact structure, strong carrying capacity, self-locking, and large working platform. However, most of the existing scissor-type lifting devices are based on a single screw drive device, which requires a lot of force to drive the entire mechanism. Such a lifting platform structure is very unfavorable for manual operation or re...

Claims

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Application Information

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IPC IPC(8): B66F7/06B66F7/28
Inventor 哈亚特·默罕默德·可汗杨建华贺亚男
Owner NORTHWESTERN POLYTECHNICAL UNIV
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