Formwork Clamp With Protected Spindle And Guide Tube
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Solution Overview
Problem
Existing formwork clamps are inefficient for fastening railing posts on various surfaces, particularly at heights above 3m, as they require costly and time-consuming concrete integration and specialized counter railings, which are expensive and hinder construction processes.
Innovation Solution
A multifunctional formwork clamp with adjustable clamping jaws and a spindle protected from concrete contamination, allowing for secure fastening of railing posts on any surface, including ceilings and large-area formwork, using tubular profiles and double crank handles for enhanced torque and ease of use.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If conventional formwork clamps are used to fasten railing posts, then railing posts can be secured on formwork, but the clamps require costly and time-consuming concrete integration and specialized counter railings that hinder construction processes
Solution Approach 1:
The formwork clamp is designed to perform multiple functions: it clamps formwork panels together and simultaneously serves as a fastening device for railing posts. The guide rail with bearing blocks and the clamping jaws are integrated into a single device that can secure both formwork and railings, eliminating the need for separate specialized counter railings and concrete integration.
Solution Approach 2:
The clamp is divided into functional segments: clamping jaws for formwork attachment, a guide rail for positioning, bearing blocks for spindle support, and integrated railing post receptacles. This segmentation allows each component to serve its specific function while working together as a unified system that speeds up construction.
2Adaptability or versatility
If specialized counter railings are used for each formwork panel type, then railing fastening is possible, but the fastening elements are expensive and their assembly is time-consuming and complicated
Solution Approach 1:
A single universal formwork clamp design with integrated guide rails and bearing blocks can accommodate different formwork panel types and configurations. The adjustable clamping jaws and standardized spindle mechanism provide adaptability across various panel types without requiring specialized fastening elements for each panel type.
Solution Approach 2:
The clamp features movable and adjustable components including the clamping jaws that can be positioned along the guide rail, and the spindle mechanism that can be adjusted to different heights and angles. This dynamic adjustability allows the same clamp design to adapt to different formwork configurations and railing requirements.
3Ease of operation
If the spindle for adjusting clamping jaws is exposed, then mechanical adjustment is possible, but the spindle can be contaminated by concrete, concrete water and additives during concreting
Solution Approach 1:
The bearing blocks serve as intermediary elements between the spindle and the external environment. The spindle is housed within the bearing blocks which are positioned inside the protected space of the guide rail structure, allowing mechanical adjustment to function while shielding the spindle from direct exposure to concrete and contaminants.
Solution Approach 2:
The spindle is nested within the bearing blocks, which are in turn positioned within the guide rail structure. This nested arrangement creates multiple layers of protection, with the innermost spindle being shielded by the bearing blocks from concrete contamination while remaining accessible for adjustment operations.
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 simple, secure, and versatile fastening of railing posts on balconies, parapets, and stairs, reducing construction time and costs by allowing the formwork clamp to function as both a railing post holder and a support, while maintaining structural integrity and avoiding contamination.
Implementation Method 1
a spindle (7) which can be rotated in the bearing blocks (5) and which has at least one clamping jaw (17, 19) in engagement
Implementation Method 2
hand cranks (9) attached to the spindle (7) on both sides... With two handles of unequal length on the crank or cranks, the torque acting on the spindle can be increased
Implementation Method 3
At least one of the two jaws (17, 19) is in engagement with the spindle (7)... enabling secure fastening of railing posts
Data Source
Figure 1a~5
Figure 6a~7b
Figure 8~13
AI summary
The formwork clamp (1) comprises a guide rail (3) with clamping jaws (17, 19) mounted on it. These are moved along the guide rail (3) by a spindle (7) and hand cranks (9) located at its end. The guide rail (3) has a U-shaped cross-section, and the spindle (7) is protected within the U. A guide tube (31) is arranged on the guide rail (3), into which a guardrail post can be inserted and fastened.