Telescopic Cylinder Guide Device for Elevator Buckling Prevention
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Solution Overview
Problem
Existing elevator systems face challenges in ensuring reliable and safe upward and downward movement of transport elements while minimizing installation space requirements and production costs, with complex and costly safety systems needed to prevent accidents such as cable breaks.
Innovation Solution
A device using a telescopic cylinder with multiple partial cylinders and a guide device that interacts with the lateral surfaces of these cylinders to prevent buckling, allowing for efficient movement and secure guidance, along with a pump for pressure adjustment and a path detection system for displacement-dependent regulation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If traditional cable-pulley systems with hydraulic cylinders are used, then reliable upward and downward movement of transport elements is achieved, but installation space requirements and production costs increase significantly
Solution Approach 1:
The patent employs a telescopic cylinder with hydraulic actuation to achieve reliable vertical movement of the transport element. The hydraulic system provides controlled extension and retraction of multiple telescopic stages, ensuring stable and predictable motion while reducing the need for complex mechanical guidance systems.
Solution Approach 2:
The lifting mechanism is divided into multiple telescopic cylinder stages that can extend and retract sequentially. This segmentation allows the system to achieve large stroke lengths while maintaining a compact retracted profile, reducing installation space requirements while preserving movement reliability.
2Length of stationary object
If telescopic cylinders with large stroke lengths are used, then space requirements are reduced, but buckling of partial cylinders occurs
Solution Approach 1:
The telescopic cylinder employs nested partial cylinders where smaller diameter cylinders are housed within larger ones. This nesting arrangement allows the system to achieve extended stroke lengths while maintaining a compact overall structure. The guided bearing assemblies ensure that each partial cylinder remains stable and prevents buckling during extension and retraction.
Solution Approach 2:
Guided bearing assemblies act as intermediary elements between the partial cylinders and the guide device. These bearings provide lateral support and guidance to the partial cylinders, preventing buckling while allowing smooth axial movement. The guided bearings translate the lateral forces into controlled guidance, ensuring stability throughout the stroke.
3Reliability
If complex safety systems are implemented to prevent cable breaks and overspeed, then safety is improved, but production costs and maintenance requirements increase
Solution Approach 1:
The telescopic cylinder system incorporates inherent safety features through its design. The guided bearing assemblies and telescopic structure provide automatic guidance and support, reducing the need for separate safety systems. The system's own structural elements serve dual purposes: mechanical function and safety assurance, thereby reducing production costs and maintenance requirements.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The solution enables reliable and safe movement of transport elements with reduced manufacturing costs and space requirements, allowing for the use of telescopic cylinders with large stroke lengths without buckling, and ensures safe operation even if the actuator fails.
Implementation Method 1
the guide device or at least one guide element of the guide device for guiding the movement of the at least one partial cylinder has at least a partial section of an outer surface of the at least one partial cylinder interacts
Implementation Method 2
Elevators for transporting people or loads are usually operated by means of electric motors, which are mechanically coupled to a cabin of the elevator via cable pulls. There are also elevator systems in which hydraulic cylinders are used, which move cable pulls via deflection pulleys.
Data Source
Figure 1
Figure 2~3
Figure 4
AI summary
The invention relates to a device (1) for moving a transport element of an elevator, wherein the device (1) comprises at least one telescopic cylinder (3), wherein the telescopic cylinder (3) comprises several partial cylinders (4a, 4b, 4c, 4d), wherein the transport element is mechanically connectable to a free end (6) of the telescopic cylinder (6), wherein the device (1) further comprises at least one guide device (7, 8) for guiding at least one partial cylinder (4a, 4b, 4c, 4d), wherein by means of the guide device (7, 8) a movement of the at least one partial cylinder (4a, 4b, 4c, 4d) can be guided in and against a stroke direction of the telescopic cylinder (3), wherein the guide device (7, 8) or at least one guide element (11a,..., 11i) the guide device (7, 8) for guiding the movement of the at least one partial cylinder (4a, 4b, 4c, 4d) interacts with at least one partial section of an outer surface of the at least one partial cylinder (4a, 4b, 4c, 4d), and a method for moving a transport element.