Working Vehicle Attachment Interference Control
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Solution Overview
Problem
Existing working vehicles, such as backhoes, face reduced working efficiency due to the complexity of managing various attachments, which often result in interference and require complicated adjustments, leading to reduced operational efficiency.
Innovation Solution
A working vehicle equipped with a control device that includes a detection means to set and adjust stop positions independently, preventing interference by using a selection means to choose and adjust stop positions without affecting other positions, allowing for easy adjustment and safe operation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a single stop position is set for the working device, then interference with the revolving device can be avoided, but complicated work is required for treating various attachments and readjustment is needed when attachments are exchanged
Solution Approach 1:
The patent segments the single stop position control into multiple independent stop positions (first stop position, second stop position, third stop position) corresponding to different attachments. Each stop position can be adjusted independently without affecting others, allowing operators to select the appropriate stop position based on the attached tool, thereby eliminating the need for readjustment when exchanging attachments and maintaining high working efficiency while ensuring interference avoidance.
2Reliability
If stop positions are adjusted globally, then interference can be avoided, but the adjustment of one stop position affects other stop positions and causes confusion
Solution Approach 1:
The control device provides independent adjustment mechanisms for each stop position (first, second, and third stop positions). When adjusting one stop position, only that specific position is modified while others remain unchanged. This segmentation of adjustment control eliminates confusion and simplifies operation, allowing operators to make precise adjustments without affecting other stop positions.
3Measurement precision
If the working device is moved to adjust stop positions, then accurate positioning can be achieved, but the adjustment work becomes complex and time-consuming
Solution Approach 1:
The patent replaces the mechanical method of moving the working device to determine stop positions with an electronic input system. Operators can directly input numerical values to set stop positions through the control device, or use direct teaching functionality where the current position is automatically captured. This substitution of mechanical positioning with electronic control significantly reduces adjustment time while maintaining or improving positioning accuracy.
Data Source
Figure 1~2
Figure 3
Figure 4A~4B
AI summary
A working vehicle is configured so that interference does not occur even if an attachment is exchanged and so that a reduction in work efficiency caused by the exchange of an attachment is minimized. A backhoe (1) comprises: a working machine body (3); a working device (4) which is connected to the working machine body, has joints (10a, 11a, 12a), and allows an attachment to be removably mounted to the front end of the working device (4); and a control device (28) in which stop positions (SA, SB, SC) are set, the stop positions (SA, SB, SC) being those at which the working device (4) is stopped in order to avoid the interference of the working device (4). The control device (28) has connected ) thereto: a position sensor (11b) which detects the position of the working device (4); an input means (51) by which the stop positions (SA, SB, SC) are set in advance and by which the stop positions are adjusted independently of each other; and a screen operation section (27) which allows selection among the stop positions.