Automatic Tool Connection Device for Construction Machinery
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Solution Overview
Problem
Current automatic connection devices for construction machinery tools lack the ability to automatically connect electrical, pneumatic, and hydraulic networks during pivoting movements, leading to inefficiencies and increased downtime due to the need for manual intervention and reliance on complex, expensive components.
Innovation Solution
An automatic connection device featuring a first mobile connection plate on the tool and a second fixed connection plate on the tool holder, with a centering device allowing for pivoting and sliding movements, eliminating the need for external damping or compensation devices and enabling seamless network coupling during tool assembly.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If automatic connection devices are equipped with damping or movement compensation devices (springs, silent blocks, compensating cylinders), then they can compensate for movement variations, but the device becomes complicated, expensive, and less reliable
Solution Approach 1:
The patent removes damping and movement compensation devices (springs, silent blocks, compensating cylinders) from the automatic connection device, extracting the problematic elements that caused complexity and reliability issues while maintaining the essential connection function through a simpler mechanical design
Solution Approach 2:
Instead of adding complex compensation mechanisms to handle movement variations, the patent inverts the approach by designing a rigid, precise mechanical connection that naturally accommodates the pivoting movement through its geometric design, eliminating the need for active compensation elements
2Adaptability or versatility
If current automatic connection devices are designed for rectilinear translation movement only, then they have simpler design, but they cannot accommodate pivoting movements of the tool holder relative to the tool
Solution Approach 1:
The patent transitions from a static rectilinear translation design to a dynamic system that accommodates pivoting movements through a mobile connection plate that can rotate and pivot relative to the tool holder, enabling the connection device to adapt to the actual movement patterns during tool assembly
Solution Approach 2:
The patent changes the movement parameters from fixed rectilinear translation to variable pivoting motion by introducing a mobile connection plate with rotational degrees of freedom, allowing the connection to adapt to different movement trajectories without increasing overall device complexity
3Productivity
If manual intervention is required to connect electrical, pneumatic, and hydraulic networks, then connection reliability improves, but productivity decreases due to increased downtime
Solution Approach 1:
The patent merges the mechanical connection and the connection of electrical, pneumatic, and hydraulic networks into a single automated operation. The mobile connection plate simultaneously establishes mechanical attachment and fluid/electrical connections during the pivoting movement, eliminating the need for separate manual intervention steps and thereby improving productivity without sacrificing operational simplicity
Data Source
Figure 1
Figure 2~3
Figure 4~5c
AI summary
The automatic connection device (2) comprises a fixed connection plate (11), that is attached to or integrated with the tool holder (3) and stationary relative to same, a movable connection plate (10), that is mounted movably on the tool (4) so as to be able to both pivot and slide relative to same, and a centring device (12) provided on the tool holder (3) and the tool (4) such that, when said tool (4) is mounted and assembled mechanically on the tool holder (3), the connection plates (10, 11) are mutually centred and the electrical, pneumatic and/or hydraulic couplers (13, 14) of same are mutually connected so as to connect at least one of the electrical, pneumatic and/or hydraulic networks of the tool (4) to that of the tool holder (3).