Jig for suspending heavy object using radial clamp mechanism
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Solution Overview
Problem
Conventional heavy object suspension systems in automobile assembly plants are prone to the risk of the locking mechanism coming off, leading to unsafe transportation of heavy objects like transmissions, due to a lack of firm fixation.
Innovation Solution
A jig with an inner-diameter clamp mechanism is used, featuring a drive shaft with a tapered surface and movable pieces that expand radially when lifted, securely engaging with the heavy object's hole to prevent dislodgment, and includes a body block and slide block with a lock mechanism for stable suspension.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If conventional lock means or locks are used to suspend heavy objects, then the structure is simple and easy to operate, but the reliability is poor because the locking mechanism may come off the heavy object
Solution Approach 1:
The inner-diameter clamp mechanism transitions from a static structure to a dynamic one that automatically expands and contracts. The movable pieces (14) can shift radially to expand the clamp's inner diameter for insertion, then contract to grip the hole wall firmly, providing adaptive fixation that enhances reliability while maintaining operational simplicity
Solution Approach 2:
The invention changes the inner diameter parameter of the clamp mechanism dynamically. By making the inner diameter variable (expandable and contractable), the system achieves reliable engagement with the heavy object's hole while maintaining a compact storage profile, resolving the contradiction between firm fixation and structural simplicity
2Reliability
If the inner-diameter clamp mechanism is made to expand radially for firm engagement, then the reliability improves, but the device complexity increases due to additional components
Solution Approach 1:
The clamp mechanism is segmented into multiple movable pieces (14) that can independently shift radially. This segmentation allows the inner diameter to change through the coordinated movement of discrete components, achieving reliable engagement while keeping each individual component relatively simple and the overall structure manageable
Solution Approach 2:
The tapered surfaces (13a, 9a) act as intermediaries that convert the lifting motion into radial expansion of the movable pieces. This intermediary mechanism translates a simple axial force into the complex radial movement needed for firm engagement, reducing the need for additional control components
3Ease of operation
If the lock means is lifted to activate the clamp mechanism, then the operation is simple and quick, but the stability during suspension may be compromised due to potential come-off
Solution Approach 1:
The clamp mechanism is designed to be self-activating through the lifting motion itself. As the lock means (6) is lifted, the drive shaft (11) moves axially, which automatically triggers the tapered surfaces to push the movable pieces outward, expanding the clamp inner diameter and securing the heavy object without requiring separate activation steps
Solution Approach 2:
The tapered surfaces (13a, 9a) are pre-configured to convert the lifting motion into radial expansion before the suspension load is fully applied. This preliminary action ensures the clamp is already engaged and secured when the heavy object is hoisted, preventing come-off while maintaining simple operation
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 jig ensures firm and safe suspension of heavy objects during transportation, eliminating the need for additional operations and reducing the risk of the locking mechanism coming off, thereby enabling smooth and secure handling.
Implementation Method 1
multiple movable pieces (14) having inclined end surfaces slidingly in contact with the first tapered surface (13a) and the second tapered surface (9a)
Data Source
AI summary
A jig for suspending a heavy object is provided that when transporting a heavy object in a suspended manner, firmly holds the heavy object and thus allows the heavy object to be smoothly and safely transported in a suspended manner. The jig for suspending a heavy object includes a body block, a slide block having a lock on the top surface thereof and fitted into a hollow formed in the body block so as to pass through the body block in the up-down direction, and a drive shaft that has, on one end thereof, an inner-diameter clamp mechanism including a head and is inserted into the body block from a side surface of the body block so as to penetrate the slide block. A concave portion having a parabolic sectional shape is formed on one side surface of the slide block.