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High-precision vertical displacement measuring instrument capable of being manually leveled

A technology for vertical displacement and measuring instruments, applied in the field of precision measurement, can solve the problems of difficult vertical measurement of the measurement axis, low measurement accuracy, and easy interference, so as to ensure the accuracy, improve the measurement accuracy, and avoid errors.

Inactive Publication Date: 2020-06-09
SOUTHEAST UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0025] In order to overcome the shortcomings of the existing vertical displacement monitoring means in the support replacement construction, such as low measurement accuracy, difficult to keep the measurement axis vertical and easy to be disturbed, the present invention provides a high-precision vertical displacement measurement that can be manually leveled Instrument, the measuring instrument can conveniently realize the vertical of the measuring axis, and can guarantee the accuracy requirement of 0.1mm, at the same time, it can also ensure that the measuring instrument remains in place during construction

Method used

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  • High-precision vertical displacement measuring instrument capable of being manually leveled
  • High-precision vertical displacement measuring instrument capable of being manually leveled
  • High-precision vertical displacement measuring instrument capable of being manually leveled

Examples

Experimental program
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Effect test

Embodiment 1

[0051] Such as Figure 1-6 A high-precision vertical displacement measuring instrument that can be manually leveled is shown, and the instrument includes a leveling device 1, a measuring device 2, and a fixing device 3;

[0052] The leveling device 1 includes a fixed frame 11, a circular level 14, a top plate 15, a foot screw 16 and a column foot arranged sequentially from top to bottom; the bottom of the fixed frame 11 is connected to the top plate 15, and the bottom of the top plate 15 is connected to the column foot , the column foot includes an upper column foot 17 and a lower column foot 18, and the column foot is provided with a foot screw 16; the circular level 14 is a glass container, and air bubbles are arranged in the container; there are concentric circles on the circular level 14; The inner surface of the upper cover of the circular level 14 is spherical, and the radius of curvature at the center of the concentric circles is the 14th axis of the circular level. Whe...

Embodiment approach

[0056] The specific implementation is as follows:

[0057] A 30m prefabricated small box girder bridge (simply supported to continuous, 3-span and 1-link) needs to replace the supports. During construction, the synchronous jacking technology is adopted to replace 1 row (abutment and intermediate pier) or 2 rows (transition pier) at a time In the replacement process of the support, the present invention is proposed to realize the monitoring of the vertical displacement.

[0058] Early preparation:

[0059] ⑴ material preparation:

[0060] Prepare various parts of the present invention, pencils, leveling rods, drilling machines, screw rods, screws, leveling glue, etc.;

[0061] ⑵ Process preparation:

[0062] At the cap beam or the front wall of the abutment corresponding to the center line of the support, select an appropriate height (selected according to the device and the jacking height) and draw a horizontal line. The horizontal plane where the line is located is the upp...

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Abstract

The invention discloses a high-precision vertical displacement measuring instrument capable of being manually leveled. The instrument comprises a leveling device, a measuring device and a fixing device. The leveling device comprises a fixing frame, a circular level, a top disc, foot screws and column feet which are sequentially arranged from top to bottom. The measuring device comprises a screw rod, a fixed scale, a movable scale, a microdrum and a fine adjustment knob which are sequentially arranged from top to bottom. The fixing device is an integrally-formed fixing frame. The fixing frame comprises vertical steel plates and horizontal steel plates, the vertical steel plates are perpendicular to the horizontal steel plates, and inclined struts are arranged between the two steel plates toform a triangular frame. According to the high-precision vertical displacement measuring instrument capable of being manually leveled, the measuring instrument can conveniently realize the verticality of the measuring shaft, the precision requirement of 0.1 mm can be ensured, and the measuring instrument can also be ensured to be kept in situ in the support replacement construction. The high-precision vertical displacement measuring instrument is simple in structure, convenient to use, precise in measurement and reading and is not disturbed.

Description

technical field [0001] The invention relates to the technical field of precision measurement, in particular to a high-precision vertical displacement measuring instrument that can be manually leveled; especially a high-precision vertical displacement measurement that can be manually leveled and is suitable for vertical displacement monitoring in the replacement of bridge supports instrument. Background technique [0002] Supports need to be set between the bridge superstructure and the piers, whose function is to transmit various load reaction forces on the bridge span structure to the piers, and at the same time ensure the required displacement and rotation of the bridge span structure (that is, to ensure that the structure is in motion load, temperature change, concrete shrinkage and creep and other factors), so that the actual stress of the upper and lower structures is consistent with the calculated theoretical diagram. [0003] However, in the process of long-term use,...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01B5/02G01B5/00
CPCG01B5/0004G01B5/02
Inventor 刘其伟刘李君
Owner SOUTHEAST UNIV
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