Edge Protector Height Adjustment Jamming in Construction Machines
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing self-propelled construction machines, such as road milling machines and surface miners, face issues with edge protector jamming during height adjustment due to limited space and the reliance on a single lifting device for height adjustment.
Innovation Solution
A self-propelled construction machine design that incorporates a second lifting device connected to a transmission device, which transmits force to the edge protector, allowing for improved lifting movement and optimal force distribution, preventing jamming by using a transmission device that can be arranged in a space-efficient manner and adjusts the point of force application.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If a single lifting device is used for height adjustment of the edge protector, then the device complexity is reduced, but the edge protector jams during height adjustment
Solution Approach 1:
The lifting function is segmented into two separate lifting devices instead of using a single lifting device. The first lifting device adjusts the rear section of the edge protector while the second lifting device adjusts the front section, allowing independent control of different segments to prevent jamming during height adjustment
Solution Approach 2:
A transmission device is introduced as an intermediary between the second lifting device and the edge protector. This transmission device transfers the lifting force from the second lifting device to the front section of the edge protector, enabling smooth force transmission and preventing direct contact that could cause jamming
2Device complexity
If the second lifting device is directly connected to the edge protector, then the transmission device is eliminated, but the force application point cannot be optimized and space constraints arise
Solution Approach 1:
The transmission device serves as an intermediary that enables optimized force application to the front section of the edge protector. It allows the second lifting device to apply force at an optimal point and angle, improving the lifting efficiency while the transmission device absorbs space constraints through its compact design
Solution Approach 2:
The transmission device changes the dimension of force application by transferring force from a remote location to the edge protector. It allows force to be applied in a different spatial dimension, optimizing the lifting action while accommodating space limitations through geometric transformation
Data Source
AI summary
In a self-propelled construction machine (1), in particular road milling machine, stabilizer, recycler or surface miner, comprising a machine frame (2), and at least one working device (6), in particular milling drum, which is arranged in a housing (4) open towards the bottom that is at least partially closed on at least one side by at least one edge protector (8) height-adjustable relative to the machine frame (2), wherein, for the purpose of height adjustment, at least one first lifting device (10) is provided, the first end (15) of which is connected to the machine frame (2), and the second end (16) of which is connected to the height-adjustable edge protector (8), it is provided for the following features to be achieved: a second lifting device (12) is provided, the first end (18) of which is connected to the machine frame (2), and the second end (20) of which is connected to a first end (22) of a transmission device (14), which is in turn connected, with a second end (24), to the height-adjustable edge protector (8).