Waffle Slab Lifting Equipment with External Clamping
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Solution Overview
Problem
Traditional methods for lifting waffle slabs in construction require embedding metal hooks, which damage the slab's surface and prolong construction time due to the need for subsequent polishing.
Innovation Solution
A lifting equipment system comprising a main body bracket, sliding member, and clamping mechanisms that allow for secure clamping of waffle slabs without embedding hooks, using pivotally connected clamping members and connecting rods to clamp the slabs without damaging them, and a sliding mechanism for easy positioning.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If metal hooks are embedded in the waffle slab for lifting, then the waffle slab can be lifted to a predetermined position, but the surface of the waffle slab is damaged and requires additional polishing work
Solution Approach 1:
The patent introduces an external lifting device with clamping members that engage with the waffle slab through its holes, serving as an intermediary lifting mechanism. This eliminates the need for embedded metal hooks, as the lifting force is applied through clamping members that contact the slab surface without penetration, thus avoiding surface damage while achieving the lifting function
Solution Approach 2:
Instead of embedding hooks into the waffle slab to enable lifting, the patent inverts the approach by providing lifting capability through external clamping members that engage with the slab's existing holes. The lifting function is achieved from the outside rather than from embedded elements, reversing the traditional methodology and preserving the slab surface
2Ease of operation
If metal hooks are embedded in the waffle slab, then lifting can be achieved, but the construction period is prolonged due to required surface polishing
Solution Approach 1:
The external lifting device with clamping members acts as an intermediary that enables lifting without the need for subsequent surface polishing. By using clamping members that engage with the slab through holes rather than embedded hooks, the polishing step is eliminated entirely, thus reducing construction time while maintaining lifting capability
Solution Approach 2:
The lifting device is designed to engage with the waffle slab's holes before lifting occurs, with clamping members positioned to contact the slab surface in advance. This preliminary positioning allows for immediate lifting without requiring post-lifting surface restoration, thereby eliminating time-consuming polishing operations
3Manufacturing precision
If clamping members are used to engage the waffle slab through holes, then the slab can be lifted without surface damage, but the device structure becomes more complex
Solution Approach 1:
The lifting device is segmented into multiple independent clamping mechanisms, each comprising a clamping member and connecting rod. Each clamping mechanism can independently engage with a hole in the waffle slab, allowing the device to handle slabs of different sizes and configurations. This modular segmentation distributes the lifting function across multiple simple units rather than requiring a single complex integrated mechanism
Solution Approach 2:
The clamping members are designed with pivotal connections that allow them to dynamically adjust their position and orientation as the waffle slab is lifted. The connecting rods enable the clamping members to pivot and adapt to the slab's position, providing flexibility and adaptability without requiring complex fixed structures. This dynamic design simplifies the overall device by allowing automatic adaptation rather than requiring multiple fixed configurations
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
Enables efficient movement of waffle slabs to predetermined positions without surface damage, reducing construction time and maintaining the slab's smooth surface.
Implementation Method 1
The sliding member is slidably disposed in the through hole of the main body bracket
Implementation Method 2
The clamping member comprises a first end and a second end, wherein the first end is pivotally connected to an outer edge of the main body bracket
Implementation Method 3
A proximate end of the connecting rod is pivotally connected to a lower end of the sliding member, and a distal end of the connecting rod is pivotally connected to the clamping member
Data Source
AI summary
Lifting equipment for lifting a waffle slab used in a construction includes a main body bracket, a sliding member and a plurality of clamping mechanisms for clamping the waffle slab. The main body bracket has a through hole in a center thereof. The sliding member is slidably disposed in the through hole of the main body bracket. The sliding member includes an engagement member located at the top of the sliding member, a shaft portion connected to the bottom of the engagement member and slidably disposed in the through hole of the main body bracket, a sleeve fitted to an outer circumference of the shaft portion, and a flange fixed to the bottom of the shaft portion for preventing the sleeve from moving downward.