Elevator Measurement Tape Connecting Device for Settlement Accommodation
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Solution Overview
Problem
Existing elevator measurement tapes face challenges in maintaining flexible access to electric lines for position determination and safety data transmission, especially due to building settlement, which can cause the tapes to bend or deform, leading to inaccurate markings and potential safety issues.
Innovation Solution
A connecting device with a guide bracket that surrounds the measurement tape, featuring movable connecting contacts such as piercing, crimping, spring-loaded, inductive, or capacitive connections, allowing flexible access and maintaining contact integrity despite building settlement, and includes a design for wireless connections and plug interfaces for rapid maintenance and safety device integration.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If the measurement tape is fixed to the elevator shaft continuously or at several points, then the position determination accuracy is improved, but the tape becomes subject to stress and deformation when the building settles
Solution Approach 1:
The connecting device incorporates movable connecting contacts that can dynamically adjust their position along the measurement tape. This dynamic capability allows the contacts to follow the tape's movement caused by building settlement, maintaining electrical connection without transmitting stress to the tape, thus preventing deformation while ensuring continuous position determination accuracy
Solution Approach 2:
The guide bracket serves as an intermediary structure that supports the measurement tape and the movable connecting contacts. It provides a stable mounting structure while allowing the contacts to move independently, decoupling the stability requirement from the tape itself and enabling the tape to remain stress-free while maintaining measurement precision
2Reliability
If fixed contacts are used to connect to the measurement tape, then the connection stability is improved, but the tape is subjected to stresses when the building settles
Solution Approach 1:
The connecting device uses movable connecting contacts instead of fixed contacts. These contacts can move along the measurement tape to accommodate building settlement, maintaining reliable electrical connection without transmitting stress to the tape, thus achieving both connection stability and stress-free tape installation
Solution Approach 2:
The connecting device changes the positional parameter of the connecting contacts dynamically. As the building settles and the tape moves, the contacts adjust their position accordingly, maintaining optimal connection without applying stress to the tape, thereby preserving both reliability and preventing stress-related damage
3Stability of the object's composition
If the measurement tape is not fixed to the frame but movably mounted in the elevator shaft, then the tape is protected from stress during building settlement, but access to the electric lines becomes less flexible
Solution Approach 1:
The movable connecting contacts provide dynamic access to the measurement tape lines. They can be positioned at any location along the tape to tap voltage or gather information, maintaining access flexibility while the tape remains stress-free due to its movable mounting in the elevator shaft
Solution Approach 2:
The connecting device can be positioned at different locations along the measurement tape to access lines at specific floors or positions. This segmented approach to access points maintains flexibility while allowing the tape to move freely in the shaft without stress from fixed mounting
Data Source
AI summary
With regard to the effect of a settling building, a connecting device for connecting a transmission device for transmitting information, wherein the transmission device is attached to a measurement tape for determining the position of a cab in an elevator shaft, wherein the connecting device is designed as a guide bracket for guiding and/or supporting the measurement tape, so that it at least partially surrounds the measurement tape, and wherein the guide bracket has at least one opening for reading out the marking unit, and wherein the connecting device has at least one connection contact for connecting to one of the communication lines and/or supply lines, wherein the at least one connection contact is movably supported in the connecting device.