Fuel Cylinder Support Adjustment in Swivel Working Machines
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Solution Overview
Problem
The existing swivel working machines face issues with deviations in the rotational position of the fuel cylinder due to variations in component dimensions, and require multiple bias members to support the weight of the fuel cylinder, limiting the installation space.
Innovation Solution
A swivel working machine with an adjustment mechanism that adjusts the relative position between the pin and pivot shaft, and includes a support mechanism with a bias member and an assist mechanism to reduce the number of bias members needed, ensuring a larger installation space for the fuel cylinder.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If the pin is disposed near the pivot shaft to define the rotational position of the fuel cylinder, then the rotational position can be defined with a compact structure, but the deviation increases at positions located away from the pivot shaft
Solution Approach 1:
An adjustment mechanism is introduced as an intermediary between the pivot shaft and the pin to compensate for position deviations. This adjustment mechanism includes adjustable members that can modify the relative position between the pivot shaft and the pin, thereby maintaining accurate rotational position definition even when manufacturing variations occur.
2Reliability
If multiple bias members are used to receive the weight of the fuel cylinder, then the weight support reliability is improved, but the installation space for the fuel cylinder is limited
Solution Approach 1:
The function of multiple bias members is merged into a single bias member by combining it with an assist mechanism. The assist mechanism provides additional force to the single bias member, enabling it to handle the weight of the fuel cylinder alone, thus eliminating the need for multiple bias members and freeing up installation space.
3Area of stationary object
If a single bias member is used with an assist mechanism, then the installation space is increased, but the force required from the bias member increases
Solution Approach 1:
The assist mechanism creates a force multiplication effect that compensates for the increased force requirement on the single bias member. By using levers, pulleys, or hydraulic components, the assist mechanism distributes and amplifies the force, allowing a single bias member to generate sufficient support force without requiring multiple units.
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
The solution effectively maintains the rotational position of the fuel cylinder and reduces the number of bias members required, providing a larger installation space and improved support for the fuel cylinder.
Implementation Method 1
the weight of the fuel cylinder is received in accordance with a resilient repulsive force of a bias member (gas damper)
Implementation Method 2
The adjustment member may have an outer peripheral surface whose distance from the axis of the pivot shaft varies in accordance with a position in a circumferential direction thereof. The support rotating body may include an abutment surface on which the outer peripheral surface of the adjustment member abuts. A position of the outer peripheral surface that abuts on the abutment surface may be changeable in accordance with rotation of the adjustment member around the axis.
Data Source
AI summary
A swivel working machine includes a swivel base, a prime mover installed in the swivel base, a working device provided at the swivel base, and a support mechanism that supports a fuel cylinder in a rotatable manner around a pivot shaft. The fuel cylinder contains fuel for the prime mover. The support mechanism includes a support rotating body that supports the fuel cylinder and that rotates around the pivot shaft, a rotational-position defining mechanism including a pin that defines a rotational position of the support rotating body around the pivot shaft, and an adjustment mechanism that adjusts a position of the pivot shaft relative to the pin.