Jib Arm Transmission Structure That Converts Servo Tension to Thrust
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Solution Overview
Problem
Existing counterweight-free vehicle-mounted jib arms suffer from structural damage due to prolonged tensile forces on the servo cylinder and are vulnerable to vibrations, leading to reduced equipment safety and lifespan.
Innovation Solution
A transmission structure incorporating a servo cylinder connected to a stabilizer link component and gas springs, transforming tensile motion into thrust, and utilizing a parallelogram structure to balance weight load, enhancing safety and extending the servo cylinder's lifespan.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the servo cylinder is used to support and control the jib arm movement, then the jib arm can be controlled to move, but the servo cylinder undergoes numerous tensile motions that lead to damage to bolts and connecting components, reducing equipment safety and lifespan
Solution Approach 1:
The patent inverts the force direction by changing the servo cylinder from tensile motion to push-pull motion. The servo cylinder now pushes the stabilizer link component rather than being pulled, which protects the cylinder's internal structure from tensile damage while maintaining the ability to control the jib arm movement effectively
2Ease of operation
If the servo cylinder undergoes tensile motions to control the jib arm, then the jib arm can be positioned and moved, but the tensile force causes uneven force distribution and structural harm to the servo cylinder under vehicle vibrations
Solution Approach 1:
The patent reverses the force application mode so that the servo cylinder pushes rather than pulls. This inversion transforms the tensile force into compressive thrust, which is better withstanding vehicle vibrations and impacts, thereby protecting the servo cylinder's structural strength while maintaining positioning capability
Solution Approach 2:
The gas springs are introduced to provide counterbalancing thrust that offsets the weight load at the front end of the jib arm. This counterweight mechanism reduces the force burden on the servo cylinder, creating more uniform force distribution and protecting the cylinder from excessive tensile stress during operation
3Stability of the object's composition
If a counterweight bar is positioned behind the pitching axis boom to balance centers of gravity, then the jib arm can be balanced, but the counterweight bar frequently collides with obstacles adjacent to the vehicle body during lateral rotation
Solution Approach 1:
The patent removes the traditional counterweight bar from the system entirely. Instead of using a physical counterweight bar that extends behind the boom and collides with obstacles, the invention extracts the counterbalancing function and implements it through gas springs that provide thrust to balance the weight load without requiring extended structural elements that could collide with obstacles
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 protects the servo cylinder's structure by altering the force-bearing mechanism from tension to thrust, improving equipment safety and extending its service life, while the gas springs provide additional thrust to balance weight loads.
Implementation Method 1
gas springs are included in the jib arm support structure, arranged on two sides of the servo cylinder and connected to the stabilizer link component. The gas spring provides thrust to the stabilizer link component, balancing the load weight at the front end of the jib arm
Implementation Method 2
The servo cylinder drives the stabilizer link component to act on the arm docking component, and changes its direction of movement, altering the force from tension to thrust, thereby modifying the force-bearing structure of the servo cylinder
Data Source
AI summary
A transmission structure for a counterweight-free vehicle-mounted jib arm, including a servo cylinder and a stabilizer link component, wherein the servo cylinder is mounted on a main structural framework and connected to the stabilizer link component to push the stabilizer link component. The stabilizer link component is further connected to an arm docking component, and the servo cylinder acts on the arm docking component via the stabilizer link component. Additionally, gas springs are included in the jib arm support structure, arranged on two sides of the servo cylinder and connected to the stabilizer link component. The servo cylinder drives the stabilizer link component to act on the arm docking component, and changes its direction of movement, altering the force from tension to thrust, thereby modifying the force-bearing structure of the servo cylinder, eliminating the damage. This design effectively protects the servo cylinder's structure, enhances equipment safety, and extends its service life.