Rail-Free Hydraulic Elevating Platform for Spiral Staircases
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Spiral staircases pose a challenge for installing elevator shafts and motor rooms, making conventional traction elevators unsuitable for vertical transport in buildings with spiral staircases, as they require a rail-based system that is not aesthetically or structurally compatible.
Innovation Solution
A rail-free hydraulic lifting platform with three parallel hydraulic cylinders in an equilateral triangle layout, an eccentric load adjusting device, and a platform transition mechanism, allowing for safe and reliable vertical transport of persons and articles, with features like handrails, doors, and counterweights to balance loads and ensure stability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a conventional traction elevator with rail-based system is installed, then vertical transport function is achieved, but it is not aesthetically or structurally compatible with spiral staircase environment
Solution Approach 1:
The patent extracts and removes the guide rail system from the elevator structure, replacing it with a hydraulic lifting mechanism. This extraction allows the elevator to function without the bulky rail infrastructure that conflicts with spiral staircase aesthetics and structure, while maintaining vertical transport capability through hydraulic cylinders and a compact platform design.
Solution Approach 2:
The patent employs a hydraulic lifting system with hydraulic cylinders to replace the conventional mechanical rail-based traction system. The hydraulic mechanism provides smooth vertical movement of the platform within the spiral staircase shaft, achieving both aesthetic compatibility and functional effectiveness without requiring complex rail structures.
2Ease of operation
If an elevator shaft is installed in spiral staircase, then vertical transport is enabled, but the structural characteristics of spiral staircase make it unable to arrange elevator motor room on roof
Solution Approach 1:
The patent transitions from a conventional roof-mounted motor room arrangement to a compact hydraulic pump station integrated within the spiral staircase shaft itself. By repositioning the power source to a different spatial dimension (within the shaft rather than on the roof), the system eliminates the need for extensive structural modifications while maintaining vertical transport functionality.
Solution Approach 2:
The hydraulic pump station and control systems are nested within the existing spiral staircase shaft structure, utilizing the available space efficiently. This nesting approach allows the motor room and hydraulic system to be integrated into the confined space of the shaft without requiring additional roof space or compromising the spiral staircase's structural integrity.
3Shape
If a rail-free hydraulic lifting platform is used, then aesthetic and structural compatibility with spiral staircase is improved, but guide rails are removed for compactness
Solution Approach 1:
The patent introduces an intermediate truss structure with support plates as a mediator between the hydraulic lifting mechanism and the platform. This intermediary structure provides guidance and stability to the platform during vertical movement, compensating for the removal of guide rails while maintaining aesthetic compatibility with the spiral staircase environment.
Solution Approach 2:
The patent employs an asymmetric truss structure with strategically positioned support plates and hydraulic cylinders arranged in a triangular configuration. This asymmetric design provides stable guidance and load distribution without requiring symmetric guide rails, achieving both aesthetic appeal and operational reliability within the spiral staircase shaft.
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 provides a compact, safe, and reliable lifting platform that can operate stably and efficiently in spiral staircase environments, addressing the limitations of conventional elevators by enabling convenient vertical transport while maintaining aesthetic and structural integrity.
Implementation Method 1
Driving the three parallel hydraulic cylinders to move synchronously via the hydraulic pump station, so that the lifting platform is equally lifted smoothly and steadily
Implementation Method 2
the eccentric load adjusting device comprises a servo motor and a rotating platform, wherein the rotating platform is connected to the servo motor and has a lower supporting guide frame arranged above it; the lower supporting guide frame has a lower electric push rod fixedly connected to its top part, an eccentric load counterweight is hinged to the right end of the lower electric push rod
Data Source
AI summary
A hydraulic elevating platform having no guide rails and an elevating method. A hydraulic power pack drives three parallel hydraulic cylinders to work synchronously, thereby implementing the rising and falling of an elevating platform; when the elevating platform reaches a predetermined floor, an upper electric pushrod pushes a pedal assembly out, and then the pedal assembly drives a pedal to rise by means of a pedal elevating system until the pedal is flush with the surface of a loading table of the elevating platform; outward-swinging doors between the elevating platform and a floor open to form pedal guardrails; then sliding doors open and a man can step onto a stair via the pedal assembly. An eccentric loading adjusting means eliminates eccentric loading to achieve balance about the center of gravity, thereby eliminating the eccentric loading of the platform. The elevating platform is simple in structure, safe, reliable, and easy to maintain. The elevating platform, placed within a spiral stair, is convenient for movement of crowds and cargo delivery at certain scenarios and is widely applicable. The elevating method is simple to implement and effectively solves the eccentric loading problem caused by reasons such as outstretching of a pedal of a hydraulic elevating platform and uneven distribution of people on the elevating platform, so that the hydraulic elevating platform is more stable and reliable during operation.