Formwork Support Spindle Locking for Gentle Lowering and Fast Raising
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Solution Overview
Problem
Existing formwork support systems face complexity in extending the support structure, with prior art requiring intricate mechanisms and being sensitive to vertical loads, which complicates the lowering and raising processes.
Innovation Solution
A formwork support system with a spindle and bearing mechanism featuring a nut element with interlocking teeth, allowing controlled rotation in one direction for lowering and another for lifting, ensuring gentle lowering and quick raising, and incorporating a braking unit for consistent speed independent of load, enabling efficient movement between support and formwork positions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Stability of the object's composition
If a motor and control device are used to maintain height difference between support devices, then the support stability is improved, but the device complexity increases
Solution Approach 1:
The patent extracts the motor and control device from the support system, replacing them with a passive mechanical bearing system that uses the weight of the upper support part itself to control lowering speed, thereby reducing device complexity while maintaining support stability
Solution Approach 2:
The upper support part's own weight is utilized as the driving force for controlled lowering, eliminating the need for external motors or control devices. The bearing system automatically regulates the lowering speed based on the load weight, achieving self-service operation
2Measurement precision
If a gear motor is used as a brake to control lowering movement, then the lowering control precision is improved, but the device complexity increases
Solution Approach 1:
The gear motor brake is extracted and replaced with a simple bearing system that provides inherent braking capability through friction, maintaining lowering control precision without adding complex mechanical braking components
Solution Approach 2:
The bearing system automatically provides braking force during lowering based on the load weight, with the braking effect self-regulating according to the actual lowering speed and load conditions, eliminating the need for separate brake control mechanisms
3Volume of moving object
If a telescopic design with spindle and nut mechanism is used, then the device compactness is improved, but the lowering mechanism complexity increases
Solution Approach 1:
The bearing system serves multiple functions simultaneously: it supports the upper support part, controls lowering speed, and provides braking force. This multi-functionality eliminates the need for separate mechanisms, reducing overall complexity while maintaining compact telescopic design
Solution Approach 2:
The bearing system automatically regulates lowering speed based on the load weight without requiring external control mechanisms, making the compact telescopic design simpler by using the load itself to control the lowering process
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 system allows for stable, efficient, and load-independent lowering and raising of formwork supports, ensuring consistent movement speed and ease of operation, even under varying loads, enhancing safety and operational efficiency.
Implementation Method 1
the bearing has a nut element with the internal thread and a locking element, wherein the nut element and the locking element have intermeshing teeth such that the rotation of the nut element is locked in one direction of rotation
Implementation Method 2
the nut element and the locking element have intermeshing teeth such that the rotation of the nut element is locked in one direction of rotation, wherein the spindle is set in rotational movement when the upper support part is lowered
Data Source
Figure 1A
Figure 1B
Figure 2A~2C
AI summary
Formwork support (2) comprising: an upper support part (10), a lower support part (11), and a lowering and lifting device (16) for lowering and raising the upper support part (10) relative to the lower support part (11) between a support position for supporting a formwork assembly (3) and a stripped position for dismantling the formwork assembly (3), wherein the lowering and lifting device (16) comprises a spindle (18) with an external thread (19) and a bearing (20) with an internal thread (21), wherein the bearing (20) engages with the external thread (21) of the spindle (18), wherein the spindle (18) is rotatably mounted on one of the lower (10) and upper support parts (11), and the bearing (20) is connected to the other of the lower (10) and upper support parts (11), wherein the bearing (20) The mother element (22) has the internal thread (21) and a locking element (23),wherein the nut element (22) and the locking element (23) have interlocking teeth (24) such that the rotation of the nut element (22) in one direction of rotation (25) is blocked, the spindle (18) being rotated when the upper support part (10) is lowered, and the rotation of the nut element (22) in the other direction of rotation (26) is released, so that the nut element (22) is set into rotational motion by the spindle (18) when the upper support part (10) is raised.