Tool Bar Backstop Mechanism Prevents Thread Loosening
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing tool bars face issues with loose and reversed threaded connections between the tool head and rod, leading to reduced work efficiency and increased maintenance costs, as well as rod bending and breakage due to weak telescopic structures, which affects service life and safety.
Innovation Solution
A tool bar design incorporating a bushing member with a cone and cylinder section, a backstop mechanism with a lock cap and intermediate member, and a pipe connection assembly with inner and outer bushes, along with a shank installation assembly, to provide a secure, adjustable, and durable connection that prevents loosening and slippage.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If a threaded connection is used between the tool head and tool bar, then the connection can be easily assembled and disassembled, but the threaded part loosens and retreats after long-time use
Solution Approach 1:
The backstop mechanism is pre-installed on the tool bar before use. This preliminary action prevents the threaded connection from loosening and retreating by providing a mechanical stop that limits the rotation of the tool head, thereby maintaining connection stability throughout the tool's service life while preserving easy assembly and disassembly capabilities
2Adaptability or versatility
If a telescopic rod structure is used to adjust bar length, then the tool can adapt to different user heights and working environments, but the rod body bends and breaks during long-term use
Solution Approach 1:
The telescopic rod is divided into multiple segmented sections that can slide relative to each other. This segmentation allows the rod to extend and contract for length adjustment while maintaining structural integrity through the distributed design of connection points and reinforcement features at each segment interface, preventing bending and breakage during long-term use
3Strength
If a limit component is added to the telescopic rod, then the rod structure is strengthened, but the component is easy to damage and requires frequent maintenance
Solution Approach 1:
The limit component is merged with the telescopic rod structure itself rather than being a separate attachment. The limit features are integrated into the rod segments and connection mechanisms, creating a unified structure that eliminates weak points and reduces maintenance requirements while maintaining the necessary strength for long-term use
4Device complexity
If the handshake is directly screwed onto the rod, then the connection is simple, but the parallel between load-bearing surfaces cannot be guaranteed
Solution Approach 1:
A intermediate connection component is introduced between the handshake and the rod. This intermediary element serves as a mediator that provides precise positioning and ensures parallel alignment of load-bearing surfaces while maintaining relative simplicity of the overall connection structure, eliminating the need for complex adjustment mechanisms
5Adaptability or versatility
If the tool bar is made length-adjustable, then the tool can meet different user needs, but the transportation cost increases due to larger volume
Solution Approach 1:
The tool bar employs a dynamic telescopic structure that allows the rod to be extended when needed for use and retracted to a compact form for transportation. This dynamic capability enables the tool to adapt to different user height requirements and working environments while minimizing its volume during storage and shipping, thereby reducing transportation costs and energy consumption
Data Source
Figure 1~2
Figure 3~4
Figure 5~6
AI summary
Disclosed is a tool bar. The tool bar comprises a head part, a tail part, a pipe connection assembly, a backstop mechanism and a bushing member. The head part and the tail part are connected with each other by the pipe connection assembly. The bushing comprises a cone section and a cylinder section; one end of the head part passes through the cylinder section and connected to an inner thread of the cone section; the outer side of the cone section is configured to secure with a tool head; an external thread is provided on an outer surface of the cylinder section. The backstop mechanism comprises an intermediate member and a lock cap; the intermediate member is a hollow cylinder.