In the past, the most common tools for measuring distances were tape measures and rulers. Using tape measure and ruler, the structure is relatively simple and can complete general distance measurement work, but its measurement speed is relatively slow, the distance measurement reading is not intuitive, and it often requires the cooperation of two or more people to complete the measurement, especially it is not easy to carry out curves and long distances. Measurement. The rangefinders used today basically adopt the structure of belt tape measure. Although some rangefinders are used to measure distance, the accuracy and precision of the readings are improved, but most of them are more complex in structure and more expensive.
The purpose of this rolling distance meter is to provide a rolling distance meter that has a simple structure and is easy to operate. It can effectively solve the shortcomings of slow measurement speed and unintuitive readings, and can be completed by only one operator. Measurement work saves people and effort.
The rolling distance meter is composed as follows: it includes a roller, a push rod articulated with the middle part of the roller through a lower end cross bar, a driving bevel gear fixed on the middle part of the roller with a cross bar penetrating through hole, and a push rod fixed on the push rod. A mechanical counting converter at the bottom of the rod; the input end of the mechanical counting converter is provided with a passive bevel gear driven by a driving bevel gear.
Compared with existing distance meters, this device has a reasonable design and simple structure. It can measure curves and long distances conveniently and quickly, saving labor and labor, and the readings are intuitive.
Description of the drawings
Figure 1 is a front cross-sectional view of the embodiment
Detailed ways
The specific device and working conditions of the utility model are introduced below with reference to the accompanying drawings:
Referring to , the specific device of this embodiment includes: roller 1, a push rod 2 hinged to the middle part of the roller through a lower end cross bar, the upper end of the push rod is provided with a handle 7; The driving bevel gear 3 passes through the through hole, and the mechanical counting converter 4 is fixed on the lower part of the push rod. The input end of the counting converter is hinged with a passive bevel gear 5 meshing with the driving bevel gear.
In addition, a retractable aiming rod 6 for positioning is provided at the front end of the rangefinder.
Figure 1
The circumference of the roller of this rolling distance meter can be designed into different lengths such as 1m according to needs. When working, hold the handle with your hand and select a distant reference object through the aiming bump, so that the three points of eye 8, aiming rod 7 and reference object 9 are in line, thus ensuring that the operator always uses the roller when traveling and measuring. Keep the route in a straight line. When the roller rolls forward, it will drive the active bevel gear with the cross bar penetrating the through hole located in the middle of the roller to rotate, thereby driving the passive bevel gear meshed with it to rotate. The measured distance is then read directly via the display window of the mechanical counting converter.
Figure 1
This rolling distance meter has a reasonable design, simple structure and easy operation. It can effectively solve the shortcomings of slow measurement speed and unintuitive readings, and can quickly and easily measure curves and long distances with only one operator. The measurement of distance saves people and effort, is low-cost, and has great application and development prospects.
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