31results about How to "Wide range of occasions" patented technology

The invention relates to a light steel roof truss with continuous structural beams. The light steel roof truss comprises the continuous structural twin beams, structural columns and fixing parts. The structural columns in the roof truss and the continuous structural twin beams are combined in a crossing mode and are not cut off or disconnected at the joints. The roof trusses are connected through overlap combination of the continuous structural twin beams and the structural columns, and the continuous structural twin beams and the structural columns are not cut off or disconnected at the joints. According to the light steel roof truss, the structure is more reasonable, the roof truss structural supporting is more stable, the connecting process of various supporting pieces of the light steel roof truss is better simplified, error accumulation in the roof truss installation process is eliminated, structural strength of the roof truss is enhanced, and the light steel roof truss is more suitable for actual use.

The invention relates to a variable-drawing-scale trolley supporting freehand sketching and SVG file importing and belongs to the technical field of drawing tools. The variable-drawing-scale trolley supporting freehand sketching and SVG file importing mainly comprises a trolley-side and a client-side, wherein the trolley-side mainly comprises a master control module, a wireless transmission module, a motor control module, a drawing starting and finishing module, a buzzer reminding device, a power module and a drawing trolley body, the client-side and the trolley-side can be communicated through WiFi, the trolley-side is based on an Android-oriented platform, a motor driving module is utilized to control four stepping motors connected with omnidirectional wheels, and drawing starting and finishing actions are achieved through an steering engine. The client-side is responsible for providing two input modes of freehand sketching on a drawing board and SVG formatted file importing and functions which are mainly SVG format parsing, curve fitting and drawing operation. The variable-drawing-scale trolley has the functions of proportionally scaling up sketches and adapting to different drawing environments.

The invention belongs to the technical field of silk pictures, and particularly relates to a silk picture and a manufacturing method thereof. The silk picture comprises a silk canvas and paints, wherein the silk canvas is coated with an obstructing agent; and the obstructing agent is matched with a needed sketch pattern. The manufacturing method is easy and practicable, and professional drawing skill is not required; and moreover, a finished product can be taken as a preferred home decoration, has good decorative function and expression of artistry, and the requirement of home decorations andthe sense of achievement of a painter are met.

The invention relates to a liquid flow observer of a medical transfusion apparatus. By using the liquid flow observer of the medical transfusion apparatus, the technical problems that a liquid flow observer in the prior art has a complicated structure and bad work reliability and the liquid flow cannot be obviously observed and metered are solved. The liquid flow observer of the medical transfusion apparatus, which has a simple structure, is easy to manufacture, can be used for obviously observing and metering the liquid flow, has wide use occasions, further has a blood return preventing function, and has quite high use safety, is provided. The liquid flow observer of the medical transfusion apparatus comprises a hard transparent shell provided with a liquid medicine circulating chamber, and an impeller positioned in the liquid medicine circulating chamber; the impeller comprises a rotating shaft and a plurality of blades; the liquid medicine circulating chamber is a cylindrical chamber; the cross section of the liquid medicine circulating chamber is formed by connecting a big circular arc, a small circular arc and transition lines between the big circular arc and the small circular arc end to end; the big circular arc and the small circular arc are concentric; two ends of the rotating shaft are rotationally supported on the shell; the end surfaces of the two ends of the rotating shaft are provided with observing color lumps; the rotating shaft is provided with a plurality of radial slots; the blades can be arranged in the radial slots of the rotating shaft in a radial sliding way; and the outer ends of the blades are in hermetic sliding fit with the surface of the cylindrical chamber.

The invention relates to a portable writing aid system, comprising a control module (1), a single-chip circuit board (2), a grid projection module (5) and a display module (6), the control module (1), a grid projection module (5 ) and the display module (6) are respectively connected with the single-chip circuit board (2). For the grid pattern written by the user, the display module (6) displays the current grid pattern type, the control module (1) is used to switch the grid pattern and adjust the brightness of the grid, and the Bluetooth module (4) accepts control instructions from the mobile phone APP, Used to switch the grid pattern and adjust the brightness of the grid. Compared with the prior art, the present invention adopts the projection method, and the drawn line pattern can be adjusted. Compared with the traditional manual line drawing, it greatly reduces the time consumption, avoids the contamination of the paper surface, and improves the aesthetics.