Revolving Apparatus Spring Nesting for Work Vehicle Brake
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Solution Overview
Problem
Conventional revolving apparatuses for work vehicles face challenges in increasing the natural length of the spring member to prevent buckling and enhance pressing force without increasing the overall height, which can interfere with operator walkways and pipe routing.
Innovation Solution
The design includes concave components on both the housing and piston to accommodate a longer spring member, allowing for increased stroke without height augmentation, along with a positioning member to maintain piston alignment and a hydraulic cylinder for effective brake operation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Force
If the natural length of the spring member is increased to prevent buckling and increase pressing force, then the brake performance is improved, but the overall height of the revolving apparatus increases, causing interference with walkways and pipe routing
Solution Approach 1:
The spring member is nested within the hollow cylindrical structure of the piston, allowing the spring to extend vertically through the piston's internal space. This nesting arrangement enables the spring member to achieve its required natural length for adequate stroke and pressing force without adding to the external height of the brake unit, thus resolving the contradiction between brake performance and apparatus compactness
Solution Approach 2:
The design transitions from a conventional horizontal spring arrangement to a vertical spring configuration that utilizes the hollow interior space of the piston. By reorienting the spring member vertically and exploiting the third dimension (height) within the existing piston volume, the solution achieves adequate spring stroke and pressing force without increasing the overall external dimensions of the brake unit
2Reliability
If the stroke of the spring member is increased to prevent buckling, then the reliability of the brake unit is improved, but the height of the apparatus increases, interfering with operator walkways
Solution Approach 1:
The spring member is positioned within the hollow piston structure, nesting it inside the existing component volume. This allows the spring to achieve sufficient stroke length for reliable operation without extending the external height of the brake unit, thereby maintaining reliability while avoiding interference with operator walkways
Solution Approach 2:
The hollow cylindrical structure of the piston provides localized space specifically for accommodating the spring member. This local structural feature enables the spring to achieve its required stroke length within the confines of the existing brake unit footprint, ensuring reliable brake operation without compromising the overall compactness and operator safety
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
This configuration ensures a longer stroke for the spring member, preventing buckling and increasing pressing force while maintaining the apparatus height, thus avoiding interference with walkways and pipe routing, and effectively stopping the revolution of large work vehicles.
Implementation Method 1
a spring member (54) provided between the piston (51) and the housing (53), biases the piston (51) toward the brake main body (50) side so as to actuate the brake main body (50)
Implementation Method 2
a hydraulic cylinder which moves the piston against the biasing force produced by the spring member
Implementation Method 3
the brake disks are squeezed by the brake plates, and in a first state in which the brake main body is actuated, the piston presses on the brake plates and the brake disks
Data Source
AI summary
A revolving apparatus for a work vehicle includes a drive unit, a brake unit under the drive unit, a deceleration unit under the brake unit, and an output unit under the deceleration unit. The brake unit has a brake main body that stops revolution, a housing, a piston and a spring. The housing has a first face with a first concave component. The piston has a second face opposite the first face with a second concave component. The piston is disposed between the brake main body and the housing, and is movable with respect to the housing in order to actuate the brake main body. The spring member has two ends held in the first and second concave components. The first and second concave components have cylindrical shapes. The inside diameter of the first concave component is greater than the inside diameter of the second concave component.