Hand-guided soil working device
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Solution Overview
Problem
Existing hand-held soil cultivation devices require significant effort for operators to manually pull or push the device in the cultivation direction, limiting ease of use and accessibility in difficult-to-reach areas.
Innovation Solution
A hand-held soil cultivation device with a joint arrangement that allows the guide part to pivot circumferentially, enabling torque transmission to the base part in any angular position, allowing for easy control through simple rotary movements, and featuring rotatable tools with vertical or horizontal axes of rotation for linear propulsion, along with a squeegee arrangement for wet cleaning.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Stability of the object's composition
If the guide part is rigidly connected to the base part, then structural stability is improved, but ease of operation deteriorates due to inability to pivot in difficult-to-reach areas
Solution Approach 1:
The device is divided into two main segments: a guide part (handles) and a base part (power unit), connected through a joint arrangement that allows relative movement. This segmentation enables the guide part to be positioned independently for ergonomic control while the base part performs the cultivation work, resolving the contradiction between structural stability and ease of operation in confined spaces.
Solution Approach 2:
The joint arrangement provides dynamic adaptability by allowing the guide part to pivot circumferentially in all directions relative to the base part while maintaining torque transmission. This dynamic connection enables the operator to easily maneuver the device into difficult-to-reach areas while the base part remains stable during operation.
2Difficulty of detecting and measuring
If manual pulling or pushing is required for forward movement, then control precision is improved, but operator effort increases significantly
Solution Approach 1:
The rotatable tool with horizontal axis of rotation serves a dual function: it performs soil cultivation while simultaneously generating linear propulsion force that moves the base part forward automatically. This self-service mechanism eliminates the need for the operator to exert force for forward movement, reducing operator effort while maintaining precise directional control through the guide part.
3Productivity
If multiple rotatable tools are used for linear propulsion, then productivity is improved, but device complexity increases
Solution Approach 1:
The rotatable tool is designed with multi-functionality, serving both as a soil cultivation implement and as a propulsion mechanism. By integrating these two functions into a single tool configuration, the device achieves effective linear propulsion without adding complex separate propulsion systems, thus maintaining simplicity while improving productivity.
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 device simplifies operation by allowing automatic forward movement of the base part, reducing operator effort and enabling effective cleaning in hard-to-reach areas with minimal effort, while maintaining a permanent linear propulsion and efficient cleaning effect.
Implementation Method 1
If at least one rotatable tool in the form of a roller or brush is provided, which is mounted with a horizontal axis of rotation in the base part, a rotation of the at least one tool in the advance direction inevitably causes a linear forward movement of the base part
Implementation Method 2
the joint arrangement being designed in such a way that the guide part can be pivoted relative to the base part in all directions with limited angles and still be able to transmit a torque to the base part
Implementation Method 3
The squeegee arrangement comprises at least one sealing lip that extends over a processing width of the floor part and rests on the floor
Data Source
Figure 1
Figure 2~3
Figure 4~5
AI summary
The invention relates to a hand-operated soil cultivation device with a base part (3, 3a) comprising at least one tool (11, 11a) rotatable on a base (B) by means of a drive, and with a guide part (2, 2a) comprising at least one handle (5) and connected to the base part (3, 3a) via a joint arrangement (9, 9a) designed such that the guide part (2, 2a) can be pivoted in all directions from a vertical in angular positions relative to the vertical and is in operative connection with the base part (3, 3a) in a torque-transmitting manner in each angular position relative to the vertical, with angular limitation.According to the invention, the at least one rotatable tool (11, 11a) is arranged on the base part (3, 3a) such that, during operation of the soil cultivation device (1, 1a), the at least one rotatable tool (11, 11a) exerts a permanent linear thrust (V) on the base part (3, 3a), that the soil cultivation device is designed as a wet cleaning machine, in particular as a scrubber-dryer (1, 1a), and has a suction bar arrangement (12, 12a) arranged behind the rotatable tool (11, 11a) in the direction of thrust (V), which rests on the ground (B) during operation, and that at least one support means (23) is provided on the base part (3) which statically supports the base part (3) on the ground (B) in a tilted transport or storage position.