CN211977827U - Non-contact measuring equipment for circumference of large-diameter steel pipe pile - Google Patents

Abstract

The utility model discloses a non-contact measuring equipment for major diameter steel-pipe pile circumference installs on the tripod and including measuring frame, driving motor, light band device, laser range finder, rotary encoder, inclinometer, treater and display terminal. The measuring rack is arranged on a quick-mounting plate of a tripod head; the driving motor is arranged in the measuring rack; the light band device and the laser range finder are arranged on the output shaft end of the driving motor one inside and one outside; the rotary encoder is arranged at the other shaft outlet end of the driving motor; the inclinometer is arranged on the shell of the driving motor; the processor is respectively connected with the driving motor, the laser range finder, the rotary encoder and the inclinometer through signal lines; the display terminal is connected with the processor through a signal wire. The utility model discloses a measuring equipment can measure major diameter steel-pipe pile inner wall fast accurately and constitute oval girth and major axis.

Description

Non-contact measuring equipment for circumference of large-diameter steel pipe pile

Technical Field

The utility model relates to a non-contact measuring equipment for major diameter steel-pipe pile circumference.

Background

The large-diameter steel pipe pile is used as an important component in port and ocean engineering, and is formed by splicing a plurality of sections of pipe joints, and each section of pipe joint is formed by rolling a steel plate. The welding safety and the appearance detection between pipe joints are important factors for ensuring the production and use safety. The diameter range of the steel pipe pile is 5-10 m, so that the manual measurement difficulty is high, the consumed time is long, and the precision is low.

At present, the measurement mode of the large-diameter steel pipe pile is divided into contact measurement and non-contact measurement. In most of domestic steel pipe pile production plants, a contact type measuring method is adopted, namely, measuring ovality of the steel pipe pile by using measuring tools such as a long-foot caliper and a roundness meter, and measuring geometric parameters of the steel pipe pile such as circumference of the steel pipe pile by using a tape measure. The measuring method is greatly influenced by human factors and measuring tool errors, and the misalignment can be generated during alignment, so that the welding operation is difficult; meanwhile, the measurement precision and efficiency are low, the labor intensity in the measurement process is high, the information feedback is slow, and the measurement requirements of quality guarantee, quantity guarantee and high-speed real-time accurate measurement and automatic data storage and output of enterprises cannot be met. The non-contact measurement mainly uses a laser scanning measuring instrument, the measuring precision is high, but the non-contact measurement is only suitable for small-caliber steel pipe piles, and the calibration of the device is difficult. Therefore, an automatic measuring device capable of accurately measuring the circumference and the diameter of the large-diameter steel pipe pile needs to be designed.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to overcome prior art's defect and provide a non-contact measuring equipment for major diameter steel-pipe pile circumference, it can measure major diameter steel-pipe pile inner wall fast accurately and constitute oval girth and major axis, provides the data basis for steel-pipe pile's follow-up processing and detection.

The purpose of the utility model is realized like this: a non-contact measuring device for the circumference of a large-diameter steel pipe pile is arranged on a tripod and comprises a measuring rack, a driving motor, a light band device, a laser range finder, a rotary encoder, an inclinometer, a processor and a display terminal; wherein the content of the first and second substances,

the measuring rack is arranged on a quick-mounting plate of a tripod head;

the driving motor is arranged in the measuring rack;

the light band device and the laser range finder are arranged on the output shaft end of the driving motor one inside and one outside;

the rotary encoder is arranged at the other shaft outlet end of the driving motor;

the inclinometer is arranged on the shell of the driving motor;

the processor is respectively connected with the driving motor, the laser range finder, the rotary encoder and the inclinometer through signal lines;

the display terminal is connected with the processor through a signal wire.

The non-contact measuring equipment for the circumference of the large-diameter steel pipe pile is characterized in that the driving motor is a servo motor.

The utility model discloses a non-contact measuring equipment for major diameter steel-pipe pile circumference has following characteristics:

1) and (3) accelerating the measurement speed: compared with the measuring method adopting a skin-drawing ruler to measure the inner circumference of the large-diameter tubular pile in the prior art, the measuring equipment is quicker, and the time for measuring the inner wall circumference at one time is not more than 5 min;

2) the measurement precision is improved: the measurement accuracy can be kept under the condition of shortening the measurement time, the allowable deviation standard of the external dimension of the existing steel pipe pile pipe is +/-5 thousandths of the circumference and not more than 10mm, the measurement deviation of the measurement equipment for the circumference of the inner wall of the offshore wind power large-diameter steel pipe pile is less than 1mm, and the measurement requirement is met;

3) the use is easy: the size and the weight of the measuring equipment can be controlled to be carried by a single person, the working condition of a steel pipe pile manufacturing field can be adapted, and time-saving and convenient installation and disassembly of workers are ensured;

4) expanding application: this measuring equipment can also be used for measuring the inside dimensions of other major diameter pipe structures, if: subway tunnels, and the like.

Drawings

FIG. 1 is a front view of the non-contact measuring device for the circumference of a large-diameter steel pipe pile of the present invention;

FIG. 2 is a side view of the non-contact measuring device for the circumference of a large-diameter steel pipe pile according to the present invention;

FIG. 3 is a top view of the non-contact measuring device for the circumference of a large-diameter steel pipe pile of the present invention;

FIG. 4 is an upper perspective view of the non-contact measuring device for large-diameter steel pipe piles of the present invention;

fig. 5 is a state diagram of the non-contact measuring device for the circumference of the large-diameter steel pipe pile in actual measurement.

Detailed Description

The present invention will be further explained with reference to the accompanying drawings.

Referring to fig. 1 and 4, the non-contact measuring device for the circumference of a large-diameter steel pipe pile of the present invention is mounted on a tripod 1 and includes a measuring frame 2, a driving motor 3, a light band device 4, a laser range finder 5, a rotary encoder 6, an inclinometer 7, a processor and a display; wherein the content of the first and second substances,

the tripod 1 is provided with three telescopic foot tubes 11 with the top ends connected together, the top ends of the three foot tubes 11 are provided with a tripod head, the tripod head is provided with a quick mounting plate 12, and the tripod head has the functions of horizontally rotating the quick mounting plate 12 and adjusting the elevation angle of the quick mounting plate 12;

the measuring frame 2 is arranged on a fast-assembling plate 12 of the tripod 1;

the driving motor 3 is a servo motor and is arranged in the measuring rack 2; the servo motor can receive pulses and can also send out pulses;

the light band device 4 and the laser range finder 5 are arranged on the shaft outlet section of the driving motor 3 one inside and one outside; the laser range finder 5 is provided with a signal acquisition unit; the optical band device 4 is used as a correcting device, and the installation position of the optical band device and the laser range finder 5 needs to ensure that a plane formed by an optical band emitted by the optical band device 4 is parallel to a plane formed by laser emitted by the laser range finder 5 rotating for one circle;

the rotary encoder 6 is arranged at the other shaft outlet end of the driving motor 3 and is used for monitoring the rotation angle of the driving motor 3;

the inclinometer 7 is arranged on the shell of the driving motor 3 and used for measuring the inclination angle of the equipment at the initial position;

the processor is respectively connected with the driving motor 3, a signal acquisition unit of the laser range finder 5, the rotary encoder 6 and the tilt angle sensor 7 through signal lines; the processor processes the data transmitted by the laser range finder 5 to obtain the data of the long axis and the short axis of the ellipse formed by the inner wall of the steel pipe pile 8, thereby obtaining the circumference of the inner wall of the steel pipe pile 8;

the display is connected with the processor through a signal wire and used for displaying data uploaded by the processor.

Referring to fig. 5 again, the utility model discloses a non-contact measuring device for major diameter steel-pipe pile circumference, when in actual use, at first place measuring device in the internal face bottom of the steel-pipe pile 8 that awaits measuring, the angle of strutting of the three foot pipe 11 of adjustment tripod 1 to guarantee that whole measuring device is in steady state, make laser range finder 5 be in horizontal position approximately, rectify the angle that laser range finder 5 jetted out the laser again: open light band device 4, finely tune tripod 1's cloud platform, with the angle of pitch of adjustment and fast-assembling board 12, and then adjust driving motor 3's horizontal angle, make the standard loop coincidence of drawing in advance on the light band that light band device 4 was beated out and the internal face of steel-pipe pile 8, the plane that this standard loop formed is parallel with the cross section of steel-pipe pile 8, so just can guarantee that the laser that laser range finder 5 jetted out is perpendicular with the internal face of steel-pipe pile 8, it is the shortest distance to have guaranteed that laser range finder 5 measures the distance to the internal face. The optical band device 4 is turned off after the position correction of the laser range finder 5 is completed.

Firstly, an inclination angle of a measuring device at an initial position is acquired through an inclination angle sensor 7, then a driving motor 3 rotates to drive a laser range finder 5 to rotate, a pulse emitting device in the driving motor 3 is connected and matched with a signal collecting unit in the laser range finder 5, the pulse emitting device emits pulse lasers with corresponding quantity according to the rotating angle when the driving motor 3 rotates, the signal collecting unit receives pulse signals, synchronously records the distance from the angle to the inner wall surface of a steel pipe pile 8 at the moment and transmits data to a processor, the processor obtains an elliptic equation through curve fitting calculation, and the long half shaft, the short half shaft and the elliptic circumference are calculated and input to a display. The rotary encoder 6 converts the angular displacement of the driving motor 3 into an electric signal for checking whether the measuring device rotates 360 degrees once, and the measuring accuracy is ensured.

The measuring equipment of the utility model installs the measuring device on the tripod, ensures the stability of the measuring device, and utilizes the tripod's own cradle head, the light band device and the rotary encoder to correct the measuring angle, and uses the coincidence of the light band and the standard loop as the standard to adjust the cradle head on the tripod, and ensures that the cross section of the measuring circumference is parallel to the cross section of the steel pipe pile; a servo motor, a laser range finder and an inclinometer are adopted as measuring devices. The utility model discloses a measuring equipment can measure oval girth and major axis that major diameter steel-pipe pile internal face constitutes fast accurately, provides the data basis for steel-pipe pile's follow-up processing and detection.

The above embodiments are provided only for the purpose of illustration, not for the limitation of the present invention, and those skilled in the relevant art can make various changes or modifications without departing from the spirit and scope of the present invention, therefore, all equivalent technical solutions should also belong to the scope of the present invention, and should be defined by the claims.

Claims (2)

1. A non-contact measuring device for the circumference of a large-diameter steel pipe pile is arranged on a tripod and comprises a measuring rack, a driving motor, a light band device, a laser range finder, a rotary encoder, an inclinometer, a processor and a display terminal; it is characterized in that the preparation method is characterized in that,

the measuring rack is arranged on a quick-mounting plate of a tripod head;

the driving motor is arranged in the measuring rack;

the light band device and the laser range finder are arranged on the output shaft end of the driving motor one inside and one outside;

the rotary encoder is arranged at the other shaft outlet end of the driving motor;

the inclinometer is arranged on the shell of the driving motor;

the processor is respectively connected with the driving motor, the laser range finder, the rotary encoder and the inclinometer through signal lines;

the display terminal is connected with the processor through a signal wire.

2. The non-contact measuring device for the circumference of the large-diameter steel pipe pile according to claim 1, wherein the driving motor is a servo motor.

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