Multi-Height Towing Coupling Device for Variable Arm Alignment
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Solution Overview
Problem
Conventional connection devices restrict the height adjustment of connection arms, making it difficult to securely connect pulling bodies when the height of the connection arm changes during various pulling operations.
Innovation Solution
A connection device with multiple guide spaces and arm receiving portions that allow the connection arm to be inserted at different heights, featuring a link member and rod retaining portions to facilitate vertical movement and rotation, ensuring secure connection regardless of the arm's position.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a single connection portion is used in the conventional connection device, then the structure is simple, but the connection arm cannot be inserted when its height changes, making secure connection difficult
Solution Approach 1:
The connection device is divided into multiple connection portions (first connection portion and second connection portion) positioned at different heights. Each connection portion has its own guide space and arm receiving portion, allowing the connection arm to be inserted at different heights depending on the actual operating conditions, thus resolving the contradiction between adaptability and structural simplicity.
Solution Approach 2:
The invention adds vertical dimensionality by positioning connection portions at different heights (first connection portion at upper level, second connection portion at lower level). This vertical segmentation allows the system to adapt to height variations of the connection arm without increasing horizontal complexity, enabling secure connection across different height scenarios.
2Adaptability or versatility
If the connection arm height is changed to accommodate various pulling conditions, then adaptability improves, but secure connection becomes difficult with conventional single-height connection devices
Solution Approach 1:
The arm receiving portions are designed to rotate from a standby state to an engaged state when the connection arm is inserted. This dynamic movement allows the connection device to adapt to different arm heights while maintaining secure connection through the rotational engagement mechanism, resolving the contradiction between adaptability and connection reliability.
Solution Approach 2:
Each connection portion is equipped with a complete set of components (guide space, rod guide portion, arm receiving portion) that can independently function. This multi-functionality allows either connection portion to engage the connection arm depending on height requirements, ensuring reliable connection across various height conditions while maintaining universal applicability.
3Adaptability or versatility
If multiple connection portions are added to accommodate height changes, then adaptability to height changes improves, but the device complexity increases
Solution Approach 1:
Each connection portion is designed with localized components (guide space, rod guide portion, arm receiving portion) that perform specific functions at that location. The first connection portion handles upper height connections while the second handles lower height connections, with each having optimized local structures. This local quality approach allows multi-height capability without requiring complete redundancy across the entire device.
Solution Approach 2:
The rod guide portions and arm receiving portions are positioned and structured to work within the overall connection device framework in a nested manner. The multiple connection portions are integrated vertically, with the first connection portion positioned above the second, creating a compact multi-level structure that accommodates height variations without proportionally increasing overall device complexity.
Data Source
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AI summary
A connection device for connecting to a connection arm (7) includes first and second connection portions (20), a connection rod (30) and a rod retaining portion (26b). The first and second connection portions (20) have first and second guide spaces (K) into which the connection arm (7) is inserted. First and second holes (H) are provided in first and second rod guide portions (22) which are provided above the first and second guide spaces (K). There are provided first and second arm receiving portions (26) pushed to rotate from a standby state by the connection arm (7) inserted into the first or second guide space (K). The first and second arm receiving portions (26) are connected by a link member (40). The connection rod (30) is passed through the first and second holes (H). When the first arm receiving portion (26) is in the standby state, the rod retaining portion (26b) supports the lower end of the connection rod within the first guide space (K). When the first arm receiving portion (26) rotates from the standby state, the rod retaining portion (26b) rotates together with the first arm receiving portion (26), and allows the connection rod (30) to pass through the second hole (H) so that the connection rod (30) is allowed to be connected to the connection arm (7) inserted into the first guide space (K) or the second guide space (K).