Cleaning Head Multi-Stage Transmission for Under-Obstacle Navigation
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Solution Overview
Problem
Existing cleaning machines face limitations in navigating under obstacles due to their design, which restricts their ability to effectively clean areas with varying heights and widths, and they often require more space for the installation of components like motors and gear systems.
Innovation Solution
A cleaning machine with a geometric stepped area on the cleaning head, featuring a two-stage transmission device that allows for torque transmission and speed reduction, enabling the machine to drive under obstacles while maintaining a compact design by positioning the drive motor above the cleaning roller and using a multi-stage gear system to bridge distances between components.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a conventional single-stage transmission device is used, then the structure is simple, but the speed reduction range is limited and the installation space cannot be optimized
Solution Approach 1:
The transmission device is divided into multiple stages (first stage and second stage), with each stage performing a portion of the speed reduction. This segmentation allows the system to achieve a greater overall speed reduction range than a single-stage device while keeping each individual stage relatively simple.
Solution Approach 2:
The transmission device utilizes the width direction (transverse to the drive shaft axis) to arrange components spatially. The first and second coupling areas are positioned at different widths, allowing the transmission device to bridge this distance in multiple dimensions, thereby optimizing space utilization and achieving compact installation.
2Ease of operation
If the cleaning head is designed with uniform height, then the structure is simple, but the ability to drive under obstacles is limited
Solution Approach 1:
The cleaning head features a stepped configuration where different regions have different heights. Specifically, the area above the first coupling area is higher than the area above the second coupling area, creating a stepped structure that provides clearance for driving under obstacles while maintaining a compact overall design.
3Power
If the drive motor is positioned far from the cleaning roller, then the torque transmission is effective, but the installation space increases
Solution Approach 1:
The transmission device exploits the width dimension (transverse to the drive shaft axis) to connect the drive motor and cleaning roller. By positioning the first and second coupling areas at different widths and using a multi-stage transmission arrangement, the system achieves effective torque transmission over a compact distance, reducing the overall installation space.
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 enhances the machine's ability to drive under obstacles, reduces the installation space required, and allows for greater flexibility in cleaning options by providing a compact and efficient design that maintains effective torque transmission and speed reduction.
Implementation Method 1
a transmission device, which is torque-effectively coupled to the drive shaft and torque-effectively coupled to the cleaning roller shaft
Implementation Method 2
the at least two-stage transmission device enables the geometric step area to be formed with improved underdriveability through a corresponding torque transmission while avoiding the free space in the step area
Data Source
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AI summary
The invention relates to a cleaning machine having a cleaning head (40), on which at least one cleaning unit is arranged, wherein the at least one cleaning unit (154, 156) comprises: - a drive motor (76) having an input shaft (96), which can be rotated about an input shaft axis of rotation (98); - a cleaning roller shaft (68); - a cleaning roller (64), which is arranged on the cleaning roller shaft (118), and - a transmission device (104), which is coupled for torque transfer to the input shaft (96) and the cleaning roller shaft (114), wherein the input shaft (96) has a first coupling region (102) for the transmission device (104) having a first end face (100), and the cleaning roller shaft (68) comprises a second coupling region (118) for the transmission device (104) having a second end face (116), and wherein the first end face (100) of the input shaft (96) is spaced at a distance in a direction (82) parallel to the input shaft axis of rotation (98) from the second end face (116) of the cleaning roller shaft (114), wherein a geometric step region (158) having a first region (160) and a second region (162) is formed on the cleaning head (40), wherein the second region (162) has a lesser height in a height direction (74) transverse to the input shaft axis of rotation (98) than the first region (160), and the first coupling region (102) is in the first region (160) and the second coupling region (118) is in the second region (162), and wherein the transmission device (104) is designed with multiple stages and bridges a distance between the first coupling region (102) and the second coupling region (118) in the direction (82) parallel to the input shaft axis of rotation (98).