Telescopic brace rod connecting device of levelling staff
A leveling rod and rod connection technology, applied in measuring devices, height/level measurement, instruments, etc., can solve the problems of laborious operation, difficult state stability of the ruler, lack of auxiliary support for the ruler, etc., to achieve easy installation, simple structure, and use. handy effect
Inactive Publication Date: 2011-02-09
罗建新
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Problems solved by technology
[0003] There is a grip ring on both sides of the middle part of the back of the existing ruler. When measuring, rely on the grip rings with both hands to keep the vertical and horizontal state of the ruler body for 20-30 s
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[0015] The present invention will be further described below in conjunction with specific examples.
[0016] Install the telescopic pole in the middle of the 2-meter-long ruler, and then stretch the two poles facing the left and the rear at an angle of about 45° to the ground, and then lock it to form a triangle with the upright ruler, and then press as needed Move the pole to adjust the level, and finally press the pole to keep the pole motionless.
[0017] The invention consists of two sets of φ20*900 finished telescopic sleeves, rubber foot covers, aluminum alloy connecting members and male and female pull-back buckles. The aluminum alloy connecting members use 20*20 aluminum alloy profiles, and one end needs to be rounded. Put it into the casing, and the other square end can be assembled after drilling and clamping.
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The invention relates to the technical field of levelling staffs, in particular to a telescopic brace rod connecting device of a levelling staff. The device is characterized in that a male/female back-drawing fastener (1) is arranged in the middle of the levelling staff; a hole is formed on the male/female back-drawing fastener (1) and movably connected with a connector (2) of the telescopic brace rod; the connector (2) is penetrated in a socket body (4) through a bolt (3) and then fixed with a nut (6) through a gasket (5); a groove is formed from the middle of the bottom to the right side wall of the bolt (3); a movable universal shaft is arranged in the groove; another telescopic brace rod is arranged on the universal shaft; and the two brace rods are stretched to the ground with an angle of about 45 degrees respectively, and forming a triangular support with the vertical levelling staff. Compared with the prior art, the connecting device has the advantages of simple and novel structure, convenient, safe and reliable use and easy assembly and disassembly; moreover, as absolute stability of the levelling staff can be kept during measurement, the connecting device fills the blank that no assistant support device is available to the levelling staff in the measurement industry.
Description
technical field [0001] The invention relates to the technical field of leveling scales, in particular to a connecting device for telescopic struts of the leveling scales. Background technique [0002] In order to determine the height of ground points with high precision, precision leveling is still the best traditional observation method at present. In addition to serving as the basis for establishing a national unified elevation system and providing elevation calculation data for various topographical surveying and engineering constructions, it is also used to study the shape and size of the earth, determine the elevation difference and inclination of various ocean surfaces, and obtain modern Various scientific issues such as the vertical component of crustal movement, the theory and method of establishing the earth's gravity field, and the exploration and analysis of seismic activity trends. [0003] There is a grip ring on both sides of the middle part of the back of the...
Claims
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Inventor 李维涛周玮张学文冷雪梅罗建新
Owner 罗建新
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