Tank Vehicle Bottom Valve Quick-Release Cover Design
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing bottom valves for tank wagons face challenges in easy spring replacement and maintaining valve spindle guidance when the spring breaks, leading to complex assembly and increased production costs.
Innovation Solution
A bottom valve design featuring a cylindrical cover with a round guide for the valve spindle, a spiral spring between the valve spindle and cover, and a quick-release fastener with latching lugs, allowing the cover to slide and rotate for easy spring replacement without losing guidance, and a guide ring or brackets to maintain spindle alignment.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of repair
If a spring is used to hold the cover in place, then the cover can be secured firmly, but replacing the spring becomes complex and time-consuming when it breaks
Solution Approach 1:
The cover is divided into a first cover part and a second cover part that can be separated from each other. The valve spindle passes through both parts, creating a segmented structure that allows the cover to be disassembled for easy spring replacement without requiring complete disassembly of the entire valve assembly.
Solution Approach 2:
The spring is extracted as a separate, easily replaceable component between the first and second cover parts. This allows the spring to be removed and replaced independently from the main valve body and spindle assembly, significantly simplifying maintenance operations.
2Reliability
If the guide for the valve spindle is short, then the cover can be compact, but the valve spindle loses its guidance when the spring breaks
Solution Approach 1:
The first and second cover parts are designed with complementary guiding surfaces that preliminarily establish and maintain the positional relationship between the valve spindle and cover structure. This preliminary guidance system ensures the spindle remains properly aligned even when the spring fails, eliminating the need for an excessively long guide.
3Ease of operation
If three levers are used as a quick-release fastener, then the cover can be quickly released, but the production becomes complex
Solution Approach 1:
The quick-release function is extracted as a separate mechanism consisting of release levers and corresponding release openings in the first and second cover parts. This dedicated release mechanism allows the cover to be quickly removed without complex multi-point fastening, simplifying both manufacturing and operation compared to traditional three-lever systems.
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 straightforward replacement of the spring with minimal effort and ensures the valve spindle retains guidance even after spring failure, reducing production costs and assembly complexity.
Implementation Method 1
a spring (8) which is braced between the cover (10) and the valve spindle (7)
Implementation Method 2
The guide for the valve stem may be a round cylindrical guide that has a loose fit around the stem
Implementation Method 3
The quick-release fastener consists of latching lugs on the cover and openings on brackets on the housing
Data Source
Figure 1
Figure 2
Figure 3
AI summary
The invention relates to a bottom valve (1) for a tank car, comprising a housing (3) on a flange (11), a distributor (4), an actuator (2), an opening (5) for a medium, a valve disc (7), a spring (8), a closure opening (9) and a cover (10) characterized by - a cover (10) with a guide (12) for the valve spindle (7) and a guide (24) to the housing (3) and - a quick-release fastener between the housing (3) and the cover (10), wherein - the quick-release fastener consists of locking lugs (18) on the cover and openings (21) on brackets (17) on the housing (3) and - the length (13) of the guide (24) to the housing (3) is greater than the travel (14) of the valve disc (6) when the closure opening is fully opened.