Hammer Carriage and Lifting Line Layout for Controlled Free Fall
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Solution Overview
Problem
Existing hammering devices suffer from inefficiency and mechanical breakdowns due to uncontrolled hammer drops and excessive wear, particularly in systems using hydraulic cylinders or translation dogs, which hinder energy transfer and cause damage from massive forces and vibrations.
Innovation Solution
A hammering device design featuring a separate hammer carriage and displacement carriage system, utilizing a lifting line connected to the hammer, where the displacement carriage controls the hammer's drop by pulling the lifting line, allowing for controlled energy transfer and reduced resistance, with components external to the hammer housing for protection and ease of maintenance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Power
If a translation dog directly engages the hammer during lifting, then the hammer can be lifted effectively, but the system is prone to breakdown due to massive forces and vibrations
Solution Approach 1:
The system is divided into separate functional components: a displacement carriage that moves independently along the carriage guide, and a hammer carriage that remains stationary during hammer lifting. This segmentation allows the displacement carriage to handle the mechanical stresses of lifting without exposing the hammer carriage to damaging forces and vibrations.
Solution Approach 2:
The lifting line acts as an intermediary between the displacement carriage and the hammer. Instead of direct engagement, the lifting line transmits the lifting force from the displacement carriage to the hammer, isolating the hammer carriage from the massive forces and vibrations generated during the lifting process.
2Ease of operation
If a hydraulic cylinder or ram hinders free fall during hammer drop, then control is maintained, but energy efficiency is reduced
Solution Approach 1:
The displacement carriage is positioned and prepared in advance along the carriage guide. Before the hammer drop occurs, the displacement carriage is already in the correct position to allow the hammer carriage to move freely downward without obstruction, ensuring maximum energy transfer while maintaining operational control through pre-positioning.
Solution Approach 2:
The system transitions from a static engagement mechanism to a dynamic one where the displacement carriage moves independently along the carriage guide. During the hammer drop, the displacement carriage remains stationary while the hammer carriage moves freely, allowing gravitational energy to be fully converted to impact energy without mechanical hindrance.
3Device complexity
If the hammer carriage and displacement carriage are combined, then device complexity is reduced, but mechanical wear and damage increase due to uncontrolled motion
Solution Approach 1:
The carriage system is segmented into two distinct carriages: the displacement carriage that handles lifting motion along the carriage guide, and the hammer carriage that remains stationary during lifting and moves freely during hammer drop. This segmentation prevents the hammer carriage from being exposed to the mechanical wear and vibrations associated with the displacement mechanism.
Solution Approach 2:
The lifting line serves as an intermediary that connects the displacement carriage to the hammer carriage without requiring direct mechanical engagement. This allows the displacement carriage to perform its function of lifting the hammer while the hammer carriage remains isolated from the harmful mechanical forces, reducing wear and damage.
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
This design ensures nearly complete energy transfer from lifting to impact, reduces mechanical wear, and enhances operational control, providing a cost-effective and reliable hammering process with minimized equipment damage.
Implementation Method 1
a lifting line connected to the hammer carriage and to the hammer, wherein the hammer carriage is connected to the hammer by means of the lifting line
Implementation Method 2
the hammer head is released and by free fall (i.e. gravity pull) is brought to impact on an object
Data Source
Figure 1
Figure 2~3
Figure 4~5
AI summary
Disclosed is a hammering device (1) comprising a hammer (2), an elongated linear carriage guide (3) including a first guide end (4) and a second guide end (5) at eithers ends of the elongated linear carriage guide (3) and a hammer carriage (6) arranged to be displaceable back and forth along the elongated linear carriage guide (3). The hammering device (1) further comprises a lifting line (7) connected to the hammer carriage (6) and to the hammer (2), so that the hammer (2) is displaced in response to displacement of the hammer carriage (6), wherein the lifting line (7) is extending from the hammer carriage (6) in a direction towards the first guide end (4). The hammering device (1) also comprises a displacement carriage (8) arranged to be displaceable back and forth along the elongated linear carriage guide (3), and displacement means (9) connected to the displacement carriage (8) and arranged to displace the displacement carriage (8), wherein the displacement carriage (8) is arranged between the hammer carriage (6) and the first guide end (4). Furthermore, a method for operating a hammering device (1) is disclosed.