Howitzer Training Gun Unloading Tray for Ground Projectile Transfer

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Solution Overview

Problem

Existing howitzer training guns face challenges in efficiently handling and unloading training projectiles to the ground, particularly due to the design limitations of conventional unloading mechanisms.

Innovation Solution

The implementation of a spring-loaded, rotatably mounted unloading tray with a pivotable drawer and slide mechanism, activated by the projectile itself, facilitates efficient transfer and unloading of projectiles from the gun barrel to the ground.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Productivity

If a conventional unloading mechanism is used, then the structure is simple, but the efficiency of transferring projectiles to the ground is low

Engineering Contradiction:
Improveprojectile unloading efficiencyVSAvoidunloading mechanism complexity
Core Design Contradiction:
ProductivityVSDevice complexity

Solution Approach 1:

The unloading tray is nested within the gun cradle structure, with the drawer mechanism nested within the tray. This allows the complex unloading function to be integrated into the existing gun structure without requiring a completely separate external mechanism, thus improving productivity while controlling overall device complexity.

Inventive Principle:
Principle #7Nested doll (Nesting)

Solution Approach 2:

The unloading tray is made rotatable about a vertical axis, and the drawer is made pivotable, transforming static structure into dynamic components. This allows the mechanism to adapt its orientation during operation - the tray can rotate to receive projectiles and the drawer can pivot to discharge them, significantly improving unloading efficiency.

Inventive Principle:
Principle #15Dynamics

2Ease of operation

If the unloading tray is made rotatable to improve projectile transfer, then the ease of operation is improved, but the device complexity increases

Engineering Contradiction:
Improveprojectile transfer easeVSAvoidmounting mechanism complexity
Core Design Contradiction:
Ease of operationVSDevice complexity

Solution Approach 1:

The adapter frame is pre-installed on the gun cradle with the rotatable mounting mechanism already in place. This preliminary preparation allows the unloading tray to be easily attached and operated without requiring complex real-time adjustments during projectile unloading, thus improving ease of operation while managing device complexity.

Inventive Principle:
Principle #10Preliminary action

3Reliability

If the drawer is spring-loaded to provide automatic locking, then the reliability is improved, but the device complexity increases

Engineering Contradiction:
Improvedrawer locking reliabilityVSAvoidspring mechanism complexity
Core Design Contradiction:
ReliabilityVSDevice complexity

Solution Approach 1:

The spring-loaded mechanism automatically locks the drawer in its closed position and automatically unlocks it when the projectile triggers the release organ. This self-service functionality eliminates the need for manual locking operations and ensures reliable operation without requiring complex control systems, improving reliability while keeping the mechanism relatively simple.

Inventive Principle:
Principle #25Self-service

Solution Approach 2:

The spring mechanism replaces complex mechanical locking systems with a simpler elastic force-based solution. The spring provides continuous locking force and can be easily triggered by the projectile's movement, offering reliable automatic locking with minimal mechanical complexity.

Inventive Principle:
Principle #28Mechanics substitution (Replace mechanical system)

4Ease of operation

If the slide is extended to improve projectile handling, then the ease of operation is improved, but the device complexity increases

Engineering Contradiction:
Improveprojectile ground handling easeVSAvoidslide mechanism complexity
Core Design Contradiction:
Ease of operationVSDevice complexity

Solution Approach 1:

The slide mechanism is extracted as a separate, simple component that can be independently operated. The release switch is positioned to be easily accessible, allowing the slide to be extended or retracted based on operational needs without complicating the overall drawer mechanism. This modular approach improves ease of operation while managing device complexity.

Inventive Principle:
Principle #2Taking out (Extraction)

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 enables smooth and reliable unloading of projectiles to the ground, enhancing the operational efficiency and safety of howitzer training guns by simplifying the handling process.

Implementation Method 1

the unloading tray is spring-loaded so as to arrange that the travel position is preferential

Methodology Applied
Scientific EffectSpring: Spring

Implementation Method 2

the drawer is spring loaded with reference to the main frame of the unloading tray so as to provide that the drawer has a preferential and locked position

Methodology Applied
Scientific EffectElasticity: Elasticity

Data Source

PatentUS12601566B2Howitzer training gun
Publication Date: 2026.04.14 VAN HALTEREN METAAL
  • US12601566B2 patent drawing
  • US12601566B2 patent drawing
  • US12601566B2 patent drawing

AI summary

A howitzer training gun with a gun carriage, a gun cradle supported by the gun carriage, a training gun barrel, and an unloading tray disposed at or near a forward end of the gun cradle, the unloading tray having a travel position and an operating position, and when in the operating position the unloading tray is arranged to receive a projectile from the training gun barrel and transfer the projectile to the ground.