Elevator Safety Gear Assembly with Adjustable Pivot Joints
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Solution Overview
Problem
Elevator safety gear assemblies face challenges in providing reliable and cost-effective braking solutions for elevator systems, with existing designs often being complex and costly to produce and maintain.
Innovation Solution
A novel elevator safety gear assembly featuring a connector with pivotably coupled engagement members and movable joints, allowing for adjustable gap width and symmetrical braking, which can be easily produced and installed at low cost.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If existing safety gear assembly designs are used, then braking function is provided, but device complexity and manufacturing cost increase
Solution Approach 1:
The safety gear assembly is divided into two independent engagement members (first and second engagement members) that can be separately manufactured and assembled. Each engagement member has its own pivotable connection to the connector, allowing modular production and simplifying manufacturing while maintaining reliable braking through dual engagement points on the guide member.
Solution Approach 2:
The connector combines multiple functions into a single component: it connects both engagement members to the elevator car, provides pivotable joints for movement, and incorporates movable connections that enable gap width adjustment. This merging reduces the total number of parts needed while achieving complex functional requirements.
2Reliability
If existing safety gear assembly designs are used, then braking function is provided, but manufacturing and installation cost increase
Solution Approach 1:
By segmenting the assembly into standardized engagement members and a connector, each component can be manufactured using conventional processes and assembled on-site. This reduces manufacturing complexity and installation cost while maintaining reliable braking through proven engagement mechanisms.
Solution Approach 2:
The movable joints in the connector allow adjustment of the gap width between engagement members to match different guide member dimensions. This parameter adjustability enables a single design to accommodate various elevator systems without requiring custom manufacturing, reducing production costs while ensuring reliable engagement.
3Device complexity
If engagement members are fixed in position, then结构简单(simple structure), but horizontal displacement increases damaging guide elements
Solution Approach 1:
The engagement members are made movable through pivotable connections to the connector, allowing them to dynamically adjust their positions during braking. This dynamic capability enables the engagement members to engage the guide member at optimal points while accommodating slight misalignments, preventing horizontal displacement and guide element damage without requiring a complex fixed structure.
4Ease of manufacture
If gap width is fixed, then manufacturing is simpler, but adaptability to different guide members decreases
Solution Approach 1:
The connector incorporates movable joints that allow the gap width between engagement members to be adjusted after manufacturing. This parameter adjustability enables a single standardized assembly to adapt to different guide member dimensions and configurations without requiring custom manufacturing, maintaining manufacturing simplicity while maximizing adaptability.
Solution Approach 2:
The connector design with movable joints provides universal compatibility across different elevator systems and guide member types. A single connector design can accommodate various gap widths by adjusting the position of movable joints, making the safety gear assembly universally applicable while keeping manufacturing processes simple and standardized.
Data Source
AI summary
An elevator safety gear assembly for an elevator system comprises a first engagement member; a second engagement member; and a connector mechanically connecting the first and second engagement members with each other. The first and second engagement members are arranged opposite to each other defining a gap which is configured for accommodating a guide member extending in a longitudinal direction. At least one of the engagement members is movable in a direction which is inclined with respect to the longitudinal direction. The first engagement member is pivotably coupled to the connector by means of a first joint, and the second engagement member is pivotably coupled to the connector by means of a second joint. At least one of the joints is movable along the connector for changing the distance between the first and second joints.