Crane Backstop Posture Changing Device
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Solution Overview
Problem
Existing crane backstop posture changing mechanisms require significant manual effort and pose safety risks during assembly and disassembly, as they rely on human power to change the backstop posture between support and storage positions.
Innovation Solution
A backstop posture changing device that includes a first support member, a second support member, a push-up mechanism, and a connection member, allowing the backstop to be automatically changed between support and storage postures by rotating the backstop base end as a fulcrum, with the push-up mechanism using a cylindrical cylinder body and extendable rod to adjust the relative angles of the support members and maintain the desired posture.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If manual operation is used to change backstop posture, then device complexity is reduced, but operator burden increases and safety deteriorates
Solution Approach 1:
The backstop posture changing device uses the gravitational force of the derricking body itself to drive the backstop between support and storage postures. The push-up mechanism leverages the natural falling motion of the derricking body to automatically position the backstop, eliminating the need for external power sources or complex control systems while reducing operator burden.
2Device complexity
If manual operation is used to change backstop posture, then device complexity is reduced, but safety deteriorates
Solution Approach 1:
The system uses the derricking body's own gravitational force to control the backstop positioning, creating a self-regulating mechanism that inherently prevents excessive force application. The push-up mechanism only activates during the natural falling process, ensuring safe and controlled operation without requiring complex safety systems.
3Ease of operation
If automatic push-up mechanism is added, then operator burden is reduced, but device complexity increases
Solution Approach 1:
The push-up mechanism is designed to automatically utilize the gravitational potential energy of the derricking body during its falling motion. This self-powered approach eliminates the need for external motors, hydraulic systems, or control electronics, achieving automation without significantly increasing structural complexity.
4Reliability
If push-up mechanism is used, then safety is improved by preventing excessive force, but device complexity increases
Solution Approach 1:
The push-up mechanism naturally limits force application by being driven solely by the gravitational force of the derricking body. The mechanism only activates when the derricking body falls, creating an inherent force-limiting effect that prevents damage to the cylinder and ensures safe operation without requiring complex force-control 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 easy and safe automatic switching of the backstop posture, reducing operator burden and preventing excessive force on the cylinder mechanism, thus enhancing safety and reducing the risk of damage during crane operations.
Implementation Method 1
capable of pushing up the pushed-up portion of the first support member so that the first straight line and the second straight line form the first angle by the first support member rotating relative to the second support member around the intermediate rotation center axis according to the extending of the cylinder rod with respect to the cylinder body from a state in which the first straight line and the second straight line form the second angle
Data Source
AI summary
A changing device easily and safely changes the posture of the backstop of a crane between a support posture and a storage posture. The backstop posture changing device is provided with a first support member, a second support member, a push-up mechanism, and a connection member. The first support member and the second support member are rotationally connected to a backstop and a lower boom respectively. When a cylinder rod of the push-up mechanism is extended with respect to a cylinder body, a push-up member pushes up the first support member and the posture of the backstop is changed from a storage posture on the lower boom to a support posture in which it is possible to support a boom while the crane is in a working posture.