Forklift Push Device Sensor Feedback for Uniform Storage Depth
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Solution Overview
Problem
Existing forklift trucks face challenges in achieving uniform storage depth of loads in storage locations due to lateral bending of the lifting frame, leading to potential collisions and inefficiencies in load handling.
Innovation Solution
A sensor device measures the horizontal distance to a reference point of the storage location, and a control device adjusts the pushing device to achieve a predetermined storage depth, and a control device adjusts the pushing device to achieve a predetermined storage depth, ensuring a uniform storage depth, and a control device adjusts the pushing device to achieve a predetermined storage depth, regardless of the lifting frame's lateral bending, by controlling the pushing device based on the sensor's measurements.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If manual control or assisted automatic extension is used to push loads laterally, then the load can be stored in the storage location, but the storage depth becomes non-uniform due to lateral bending of the lifting frame
Solution Approach 1:
The sensor device measures the actual horizontal distance from the pushing device to the reference point of the storage location, and this measurement is fed back to the control device. The control device then adjusts the pushing distance based on this feedback to achieve the predetermined storage depth, resolving the contradiction between uniformity and manual operation.
Solution Approach 2:
The patent replaces manual mechanical control with an automated system consisting of a sensor device for measurement and a control device for decision-making. This substitution eliminates the need for manual intervention while ensuring precise and uniform storage depth control.
2Reliability
If the load is pushed too deep into the shelf compartment, then the load is stored in the storage location, but the lateral safety distance is compromised and collisions may occur
Solution Approach 1:
The control device is programmed with the predetermined storage depth that ensures adequate lateral safety distance. Before the pushing operation begins, the system calculates the exact distance to push based on the measured position, preventing the load from being pushed too deep and maintaining safety margins.
Solution Approach 2:
The sensor device provides real-time feedback on the horizontal distance to the storage location, allowing the control device to precisely control the pushing distance. This feedback mechanism ensures that the load is pushed to the correct depth without compromising safety or efficiency.
3Length of stationary object
If the lifting frame bends laterally due to high lifting height and load weight, then the load can be lifted to high storage locations, but the storage depth control becomes inaccurate
Solution Approach 1:
The sensor device measures the actual horizontal distance from the pushing device to the reference point, compensating for any lateral bending of the lifting frame. This feedback allows the system to maintain accurate storage depth control even when the lifting frame experiences lateral deflection due to high lifting heights and heavy loads.
Solution Approach 2:
The system dynamically adjusts the pushing distance parameter based on the measured horizontal distance. When lateral bending occurs, the sensor detects the changed position and the control device modifies the pushing distance accordingly, maintaining storage depth accuracy despite changes in the lifting frame's physical state.
Data Source
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AI summary
The invention relates to a forklift truck (1) with a lifting frame (4), a load handling device (6) for receiving a load (L) and a push device (15) for the load handling device (6), wherein the push device (15) together with the load handling device (6) can be raised and lowered on the lifting frame (4) and wherein the push device (15) is designed to move the load handling device (6) relative to the lifting frame (4) in the horizontal transverse direction (Q) of the forklift truck (1).According to the invention, a control device (30), in particular an electronic control device (30), is provided which is operatively connected to a sensor device (31), wherein the sensor device (31) is configured to measure a distance of the push device (15) to a reference point (BP) of a storage location (EP), and the control device (30) controls the push device (15) depending on the distance detected by means of the sensor device (31) in such a way that when a load (L) located on the load handling device (6) is stored in the storage location, a predetermined storage depth (ET) of the load (L) in the storage location is achieved.