CN204405014U - A kind of roadway deformation measurement mechanism based on laser range finder - Google Patents

Abstract

The utility model relates to a roadway deformation measuring device based on a laser range finder, comprising a laser range finder, a fixed base of the laser range finder, a rotating table, a support rod, and a base, and the support rod is lengthened by thread connection; The lower part of the turntable is a protruding threaded head for fixing on the support rod, and the turntable is provided with a rotating support; the rotating support is connected to the fixed base of the laser range finder through a rotating shaft. The utility model can realize in-situ measurement, and has the advantages of simple structure, detachable, high precision, long distance measurement and the like.

Description

A roadway deformation measurement device based on laser range finder

Technical field:

The utility model relates to a roadway deformation measuring device based on a laser range finder, which belongs to the technical field of measuring equipment.

Background technique:

During the excavation of the roadway, the stress state of the surrounding rock is changed, which causes the deformation of the surrounding rock. This deformation is the most direct and obvious reflection of the change in the mechanical form of the roadway surrounding rock and support system, and its change characteristics and appearance rules are important basis for determining the reasonable support form, support parameters and support timing of the roadway surrounding rock. At present, the basic method of measuring the surface deformation of the roadway is to mark points on the two sides and the roof and floor of the roadway after excavating the rock mass, and use monitoring instruments to measure the distance between the marked points within a certain period of time, so as to calculate the deformation of the roadway. Deformation amount and deformation rate of two sides, top and bottom plates. Traditional roadway deformation monitoring generally uses a steel ruler or a leather tape to measure the distance between marking points. This method has problems such as low measurement efficiency, poor measurement accuracy, difficult measurement, and hindering normal production.

The laser rangefinder is an instrument that uses laser to accurately measure the distance of the target. This type of instrument itself has high measurement accuracy (millimeter level), but when it measures the small changes in the distance between the roadway marking points, because there is no stable and reliable The fixed method, which is only held by human hands, cannot meet the absolute in-situ measurement requirements, that is, each measurement must be guaranteed to be carried out at the same position, and certain human errors may occur during multiple measurements or measurements by different people (up to several mm), this error may have little effect on the general distance measurement, but it is huge for the deformation of the rock roadway as small as a few millimeters a day, so the reliability of the measurement results cannot be guaranteed.

Invention content:

In order to solve the above-mentioned problems in the prior art, the purpose of this utility model is to provide a roadway deformation measurement device based on a laser rangefinder, which can realize in-situ measurement and has high precision.

In order to achieve the above object, the utility model adopts the following technical solutions:

A roadway deformation measurement device based on a laser range finder, comprising a laser range finder, a fixed base of the laser range finder, a rotating table, a support rod, and a base, and the support rod is lengthened by threaded connection; the lower part of the rotation table It is a protruding threaded head for fixing on the support rod, and a rotating bracket is arranged on the rotating table; the rotating bracket is connected with the fixed base of the laser range finder through the rotating shaft.

Further, the rotating table can adjust the rotating bracket to rotate along the horizontal plane.

Further, the rotating bracket is a U-shaped bracket, the fixed base of the laser rangefinder is installed on the rotating bracket through a rotating shaft, and fixing knobs are arranged on both sides of the rotating bracket.

Further, a laser range finder is fixedly installed in the fixed base of the laser range finder, and its width is exactly equal to the width of the laser range finder.

The beneficial effects of the utility model are:

1. Make full use of the advantages of the hand-held laser rangefinder, such as high precision, long distance measurement, simple operation, and low price, and realize in-situ measurement through auxiliary devices, improving data accuracy;

2. The whole device has the advantages of simple structure, detachable, easy to carry, and not affected by the underground working environment.

Description of drawings:

Fig. 1 is the front view of the utility model.

Fig. 2 is a top view of the utility model.

Reference signs:

1-base, 2-support rod, 3-rotary table, 4-rotary bracket, 5-fixing knob, 6-fixed base of laser range finder, 7-laser range finder.

Detailed ways:

The utility model will be described in further detail below in conjunction with the accompanying drawings.

As shown in Figures 1 and 2, a roadway deformation measurement device based on a laser rangefinder includes a base (1), a support rod (2), a rotating table (3), a rotating bracket (4), and a fixed knob (5 ), the laser rangefinder fixed base (6), the laser rangefinder (7), one end of the support rod (2) is a threaded head, and the other end is a threaded hole matched with the threaded head, and the base (1 ) is connected with the turntable (3); according to the actual environment, threaded connections are used to lengthen the support rods (2); the turntable (3) is provided with a swivel bracket (4), and the swivel bracket (4) is connected to the laser rangefinder through the rotating shaft Connect to the fixed base (6) of the instrument.

When in use, the rotating table can adjust the rotating bracket to rotate along the horizontal plane, so that the rotating bracket can turn to a suitable measurement position, and then the fixed base of the laser rangefinder can swing and adjust the position on the rotating bracket, so that when the visible laser signal is aligned with the target base point, the rotating Tightening the fixing knob can make it firmly stabilized at this position without being supported by the human hand, ensuring that the tester can read the data calmly and accurately.

Claims (4)

1. A roadway deformation measuring device based on a laser range finder, characterized in that it comprises a laser range finder, a laser range finder fixed base, a rotating table, a support rod, and a base, and the described support rod adopts a threaded connection to lengthen The lower part of the turntable is a protruding threaded head for fixing on the support rod, and the turntable is provided with a rotating support; the rotating support is connected to the fixed base of the laser range finder through the rotating shaft. 2. A roadway deformation measurement device based on a laser rangefinder according to claim 1, wherein the rotating table can adjust the rotating bracket to rotate along the horizontal plane. 3. A roadway deformation measuring device based on a laser rangefinder according to claim 2, wherein the rotating bracket is a U-shaped bracket, and the fixed base of the laser rangefinder is installed on the rotating bracket through a rotating shaft , with fixed knobs on both sides of the swivel bracket. 4. A roadway deformation measurement device based on a laser range finder according to claim 3, wherein the laser range finder is fixedly installed in the fixed base of the laser range finder, and its width is just equal to that of the laser range finder. width.