Vehicle Lifting Yoke With Side-Approach Pivoting Jack Interface
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Solution Overview
Problem
Lifting heavy vehicles poses safety risks due to the need for operators to be present under the vehicle during the lifting process, which is particularly hazardous for very heavy vehicles.
Innovation Solution
A connecting yoke system that allows vehicles to be lifted with jack stands positioned outside the vehicle's ground clearance, using a frame with a recovery axis and a fixing interface that includes a hollow housing and flange for securing the jack head, enabling the jack stands to be pivoted and rolled into place without requiring operators to be under the vehicle.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If traditional lifting systems are used, then the vehicle can be lifted to the required height, but operators must be positioned under the vehicle which creates safety hazards
Solution Approach 1:
The jack stand is designed with an inclined configuration that allows it to approach the vehicle from the side rather than from underneath. The jack stand transitions from an inclined position to a vertical position during lifting, changing the spatial dimension of operation and eliminating the need for operators to be under the vehicle.
Solution Approach 2:
The jack stand is initially positioned in an inclined state before lifting begins, with the yoke already attached to the vehicle's lifting point. This preliminary positioning allows the lifting force to be applied from the side, and the stand gradually straightens as the vehicle is lifted, maintaining safe operator positioning throughout the process.
2Productivity
If jack stands are positioned under the vehicle for lifting, then the lifting function is achieved, but safety risks increase due to operator exposure
Solution Approach 1:
The jack stand operates from a side approach rather than from underneath the vehicle. The inclined design allows the stand to engage the vehicle laterally and then progressively verticalize during lifting, transferring the lifting action from a horizontal-under-vehicle approach to a diagonal-side approach, thereby eliminating operator exposure to hazards.
Solution Approach 2:
The yoke serves as an intermediary component that connects the jack stand to the vehicle's lashing ring. This intermediary allows the lifting force to be transmitted through a pivoting connection that enables the jack stand to approach from the side while still effectively lifting the vehicle, mediating between the side-approach safety requirement and the vertical-lifting functional requirement.
3Device complexity
If a fixed interface is used between jack stand and yoke, then structural simplicity is maintained, but the ability to pivot and position the jack stand externally is limited
Solution Approach 1:
The interface between the jack stand and yoke is designed with a pivoting capability that allows the connection angle to change dynamically during the lifting process. The jack stand transitions from an inclined position to a vertical position through this pivoting interface, enabling adaptability in positioning while maintaining a relatively simple structural connection through the yoke's frame and axis design.
Data Source
Figure 1~2
Figure 3~4
Figure 5
AI summary
This linkage (2) of a vehicle with a jack stand (8) of a lifting and positioning system, includes a frame, on which are provided a take-up axle adapted to fit into a tie-down ring of a vehicle, and an interface for fixing to a jack stand (8).