Positioning device and positioning method for circular-tube-shaped structure

The technology of a positioning device and a positioning method, which is applied in the directions of measuring devices, instruments, and measuring point marks, can solve the problems of large zenith point position error, low positioning accuracy, and low work efficiency, so as to improve measurement accuracy and efficiency, increase The probability of large-scale vision and the effect of reducing the measurement process

Pending Publication Date: 2020-11-17
CHINA RAILWAY MAJOR BRIDGE ENG GRP CO LTD
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  • Abstract
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Problems solved by technology

The zenith position marked by this method not only has a large error in the zenith position, but also only relies on a single zenith coordinate to calculate the center coordinates of the circular structure, which has low positioning accuracy and is unreliable.
In addition, in engineering construction, it is often encountered that the zenith is blocked, such as the anchor pipe of a suspension bridge tunnel, this method cannot be used and has great limitations
[0006] In summary, the traditional measurement method has many procedures, low work efficiency, and low measurement accuracy, which urgently needs to be improved.

Method used

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  • Positioning device and positioning method for circular-tube-shaped structure
  • Positioning device and positioning method for circular-tube-shaped structure
  • Positioning device and positioning method for circular-tube-shaped structure

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Embodiment Construction

[0041] The present invention will be described in further detail below in conjunction with the accompanying drawings and embodiments.

[0042] The invention proposes a positioning device and a positioning method for circular tubular structures, which are suitable for engineering surveys of circular tubular structures, especially for engineering surveys of bridge circular tubular structures and long circular tubular structures, and are also suitable for square structures Object positioning measurement. refer to figure 1 As shown, the circular tubular structure positioning device includes an annular outer frame 1, four sleeve-type inner screw rods 2, and four prisms 6, and the annular outer frame 1 is evenly equipped with four sleeve-type The installation position of the inner screw rod 2. The sleeve-type inner screw rod 2 includes a screw rod 3, a nut rod 4 with a scale threadedly connected with the screw rod 3, and a sleeve 5 for accommodating the accommodation space of the ...

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Abstract

The invention discloses a positioning device and a positioning method for a circular-tube-shaped structure, and belongs to the technical field of engineering surveying. Thepositioning device includesan annular framework; four sleeve type inner screw rods, eachcomprising a screw rod, a nut rod which is in threaded connection with the screw rod and is provided with scales and a sleeve with a containing space, wherein one end of each sleeve is closed, the inner side of each sleeve is fixedly connected with one end of the corresponding screw rod, and the other end of each sleeve is open and is rotatably mounted at the corresponding mounting position, and the axis of the sleeve, the axis of the screw rod and the axis of the nut rod coincide; and four prisms, that are respectively mounted on the outer sides of the closed ends of the four sleeves. The device has the advantages of being convenient to position and measure, high in work efficiency and high in precision.

Description

technical field [0001] The invention relates to the technical field of engineering surveying, in particular to a positioning device and a positioning method for a circular tubular structure. Background technique [0002] The circular tubular structure is a structure often used in the construction of modern bridges and building steel structures. Such as cable-stayed bridge cableway pipe, convoluted cable saddle, circular tubular arch rib of steel pipe arch bridge, anchor tube of suspension bridge tunnel anchor, circular tubular structure of architectural steel structure engineering, etc. [0003] The characteristic of the circular tubular structure is that its axis, the center point of the nozzle and the center point of any cross section are all virtual, and the accuracy of its positioning measurement is high, such as cable-stayed bridge cableway tubes, convoluted cable saddles, suspension bridge tunnel anchors The allowable error of anchor tube positioning measurement is no...

Claims

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Application Information

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IPC IPC(8): G01B21/04G01C15/02
CPCG01B21/047G01C15/02
Inventor 肖根旺陈炯伟李付伟
Owner CHINA RAILWAY MAJOR BRIDGE ENG GRP CO LTD
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