Vibrocompacting Device Back-Pressure Stabilization
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Solution Overview
Problem
Existing vibrocompaction devices for forming carbonaceous blocks face instability and reduced efficiency due to buckling of stacked pneumatic cylinders, which leads to lateral thrusts and reduced service life, especially when the stroke requirements exceed standard pneumatic cylinder capacities.
Innovation Solution
A counter-pressure device with two independent stacks of annular inflatable cylinders, each comprising an upper and lower pneumatic cylinder secured to the cover and pressing mass, respectively, with connecting members that guide along a guide column off-center from the vertical axis, eliminating buckling and allowing for larger extensions without increasing cylinder size.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Length of moving object
If stacked pneumatic cylinders are used to increase stroke beyond standard capacities, then the device can achieve larger extensions, but buckling occurs causing lateral thrusts and reduced stability
Solution Approach 1:
A guide column is introduced as an intermediary element between the stacked pneumatic cylinders. The guide column provides a fixed reference axis that the connecting members follow, preventing lateral deviation and buckling of the cylinder stack while allowing full extension stroke.
Solution Approach 2:
The guide column is positioned off-center relative to the vertical axis of the pressing mass, creating an asymmetric arrangement. This asymmetric positioning allows the guide column to effectively constrain the pneumatic cylinders without interfering with the central pressing operation.
2Stability of the object's composition
If guide means are added to prevent buckling, then stability is improved, but device complexity increases
Solution Approach 1:
The connecting members are designed as flexible annular elements that can bend and deform to accommodate the expansion and contraction of the pneumatic cylinders. This flexibility allows the connecting members to follow the guide column without requiring complex rigid mechanical linkages.
3Force
If pneumatic cylinders are inflated during compaction, then counter-pressure force is generated, but the rebound of pressing mass is not sufficiently opposed
Solution Approach 1:
The guide column acts as a counterbalancing element that provides a stable reference axis. By constraining the pneumatic cylinders to follow this fixed guide, the system counteracts the lateral forces generated during inflation, ensuring that the counter-pressure force remains vertically oriented and stable.
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 solution stabilizes the counter-pressure device, prevents buckling, and maintains vertical force orientation, enhancing compaction efficiency and extending the service life of pneumatic cylinders while allowing for greater stroke without increasing the device's size or complexity.
Implementation Method 1
These pneumatic cylinders 14 have their upper and lower bottoms secured respectively to the cover 13 and to the pressing mass 3 and are inflated with compressed air during all or part of the compacting phase
Implementation Method 2
each stack of cylinders comprising at least one upper cylinder and one lower cylinder, the upper end of the upper cylinder and the lower end of the lower cylinder being secured respectively to the cover and to the pressing mass, and the respectively lower ends of the cylinder upper and upper of the lower cylinder being integral with a connecting member of said guide means which slides along a guide column coaxial with said substantially vertical axis off-center of said stack
Data Source
Figure 1
Figure 2a
Figure 2b
AI summary
The invention relates to a back-pressure device (12) for a vibrocompacting device, particularly for forming molded carbon blocks, including: at least one mold that is open on two top and bottom horizontal surfaces thereof and securable to a vibrating table forming the bottom of the mold and subject to vibrations by an actuating means; a pressing weight (3) capable of being placed in the mold; and a cover (13) capable of sealingly closing the top surface of the mold. Said back pressure device (12) is characterized in that it does not have a central cylinder stack and includes two stacks (16) or sets of stacks of inflatable cylinders (17a, 17b) that are symmetrically and laterally eccentric on both sides of the central vertical axis (VV) that engages with a guide means (18) that is suitable for each stack (16), the top end of the top cylinder (17a) and the bottom end of the bottom cylinder (17b) of each stack (16) being respectively secured to the cover (13) of the pressing weight (3). The invention also relates to a vibrocompacting device provided with a back pressure device according to the invention.