CN215641822U

CN215641822U - Crash barrier burial depth nondestructive testing device

Info

Publication number: CN215641822U
Application number: CN202122060837.3U
Authority: CN
Inventors: 朱纪刚; 姚鑫
Original assignee: Sichuan Lutong Detection Technology Co ltd
Current assignee: Sichuan Lutong Detection Technology Co ltd
Priority date: 2021-08-30
Filing date: 2021-08-30
Publication date: 2022-01-25
Anticipated expiration: 2031-08-30

Abstract

The utility model discloses an anti-collision guardrail buried depth nondestructive testing device which comprises an ultrasonic signal excitation device, an ultrasonic signal receiving device, a detector host and a vertical rod, wherein the ultrasonic signal excitation device comprises an ultrasonic signal exciter and a first fixing device for fixing the ultrasonic signal exciter; the upright stanchion is connected with two sliding sleeves in a sliding way, and the first fixing device and the second fixing device are respectively connected with the two sliding sleeves through connecting rods; the upright stanchion is provided with length scales along the length direction. The utility model has the advantages of simple structure, convenient use, accurate reading, stable signal excitation and accurate test result.

Description

Crash barrier burial depth nondestructive testing device

Technical Field

The utility model relates to the field of road facility detection equipment, in particular to a nondestructive detection device for the burial depth of an anti-collision guardrail.

Background

With the development of large-scale social infrastructure construction in China, the demand for convenient and efficient traffic is gradually expanded, and the nation invests huge funds in the field of basic traffic construction, so that the national social infrastructure becomes an important infrastructure for promoting economic development and social progress due to the fact that the country has a wide region and many expressways of population undertake a large regional transportation task. The waveform guardrail upright post of the expressway is the most common and important safety protection facility. Along with the continuous expansion of traffic flow, can inevitably produce the traffic accident, the guardrail stand is to the terminal protection guarantee of traffic participant can effectual reduction vehicle impact force, can effectively avoid the vehicle to rush out the road surface, causes bigger secondary damage, therefore the buried depth and the damage condition of guardrail stand should obtain higher attention.

At present, when the buried depth of a guardrail upright column is detected, a pile pulling method or a knocking method is mostly adopted, and both the two methods have certain defects, the pile pulling method is easy to damage a roadbed, the signal excitation of the knocking method is not stable enough, and a test result has deviation.

SUMMERY OF THE UTILITY MODEL

Aiming at the problems, the utility model provides a nondestructive detection device for the burial depth of an anti-collision guardrail, which is provided with a detection device.

The technical scheme of the utility model is as follows:

a non-destructive detection device for the buried depth of an anti-collision guardrail comprises an ultrasonic signal excitation device, an ultrasonic signal receiving device, a detector host and a vertical rod, wherein the ultrasonic signal excitation device comprises an ultrasonic signal exciter and a first fixing device for fixing the ultrasonic signal exciter; the upright stanchion is connected with two sliding sleeves in a sliding way, and the first fixing device and the second fixing device are respectively connected with the two sliding sleeves through connecting rods; the upright stanchion is provided with length scales along the length direction.

The working principle of the technical scheme is as follows:

during detection, the headFixing the ultrasonic signal excitation device on the top end of the guardrail upright post, fixing the ultrasonic signal receiving device at a proper position, wherein the ultrasonic signal excitation device and the ultrasonic signal receiving device are both fixed on the guardrail upright post without being supported by the upright post, the upright post naturally falls to the bottom end to be contacted with the bottom surface, and reading scale reading is the height L of the ultrasonic signal receiving device from the bottom surface₀The data can be conveniently read out, so that the detection result is more accurate. The ultrasonic signal exciter excites an ultrasonic signal, the ultrasonic signal receiver receives a direct wave signal and a bottom reflection signal from the ultrasonic signal exciter, the ultrasonic signal receiver transmits the signals to the detector host, the detector host calculates the time difference t between the direct wave signal and the bottom reflection signal, and then the buried depth L of the guardrail upright can be calculated according to the propagation velocity v (known) of the signals on the guardrail upright, and the specific calculation formula is as follows:

in a further technical scheme, the first fixing device and the second fixing device have the same structure; first fixing device includes mount and connecting band, the mount is minor arc form, ultrasonic signal energizer inlays on locating the inside wall of mount, the connecting band is the cord area, the both ends of connecting band are connected with the both ends of mount respectively, and wherein one end is fixed connection, and the other end bonds for the magic subsides.

Compared with the prior art in which a gluing mode is adopted, the hoop type fixing mode is adopted, the fixing and dismounting are highly convenient, and the problems that residual glue needs to be cleaned and equipment devices are easy to damage in the gluing process are solved. In addition, because an iron chain is often welded between the guardrail columns in the actual use process, the ultrasonic signal receiving device adopting the annular device in the prior art cannot be fixed at a proper position of the guardrail columns.

In a further technical scheme, be equipped with the insulating layer of making an uproar that falls on the inside wall of mount and the inside wall of connecting band respectively, can avoid the electric leakage on the one hand, reduce the impact noise, on the other hand can make the incident characteristic of fluctuation signal obvious, improve the reflectivity, even still enable fluctuation signal and keep very high reflectivity when meetting on the less plane of reflection of impedance difference, and fluctuation signal's stability is good, and can effectively restrain the interference signal behind the pulse signal, the detector host computer of being convenient for detects fluctuation signal, the follow-up analysis to fluctuation signal of being convenient for simultaneously.

In a further technical scheme, the insulating noise reduction layer is a PE, PP or PET film.

In a further technical scheme, a bottom plate is arranged at the bottom end of the vertical rod, and 0 scale of the length scale is located on the bottom surface of the bottom plate.

The setting of bottom plate can prevent that the sliding sleeve from following the bottom slippage of pole setting, establishes the bottom surface department of bottom plate with 0 scale of length scale, can be more accurate measure the height of ultrasonic signal receiver apart from the bottom surface.

The utility model has the beneficial effects that:

1. the utility model has simple structure, convenient use, accurate reading, stable signal excitation and accurate test result;

2. compared with the prior art in which a gluing mode is adopted, the hoop type fixing mode is adopted, the fixing and dismounting are highly convenient, and the problems that residual glue needs to be cleaned and equipment devices are easy to damage in the gluing process do not exist;

3. the utility model adopts a hoop type fixing mode, can select a fixed position according to the requirement, and improves the applicability of the equipment;

4. according to the utility model, the insulating noise reduction layers are respectively arranged on the inner side wall of the fixing frame and the inner side wall of the connecting belt, so that on one hand, electric leakage can be avoided, impact noise is reduced, on the other hand, the incidence characteristic of a fluctuation signal is obvious, the reflectivity is improved, the fluctuation signal can still keep high reflectivity even when encountering a reflecting surface with small impedance difference, the stability of the fluctuation signal is good, an interference signal behind a pulse signal can be effectively inhibited, a detector host can conveniently detect the fluctuation signal, and meanwhile, the subsequent analysis on the fluctuation signal is facilitated.

Drawings

FIG. 1 is a schematic structural diagram of a nondestructive detection device for the burial depth of a crash barrier according to an embodiment of the utility model;

fig. 2 is a structural diagram of an ultrasonic signal excitation device according to an embodiment of the present invention.

Description of reference numerals:

10. erecting a rod; 11. calibration; 12. a base plate; 20. an ultrasonic signal excitation device; 21. a fixed mount; 22. an ultrasonic signal exciter; 23. a connecting belt; 24. an insulating noise reduction layer; 30. an ultrasonic signal receiving device; 40. a connecting rod; 50. a sliding sleeve; 60. and a detector host.

Detailed Description

The embodiments of the present invention will be further described with reference to the accompanying drawings.

Example (b):

as shown in fig. 1, a non-destructive detection device for the buried depth of an anti-collision guardrail comprises an ultrasonic signal excitation device 20, an ultrasonic signal receiving device 30, a detector host 60 and a vertical rod 10, wherein the ultrasonic signal excitation device 20 comprises an ultrasonic signal exciter 22 and a first fixing device for fixing the ultrasonic signal exciter 22, the ultrasonic signal receiving device 30 comprises an ultrasonic signal receiver and a second fixing device for fixing the ultrasonic signal receiver, and the signal output end of the ultrasonic signal receiver is connected with the signal input end of the detector host 60; the upright rod 10 is slidably connected with two sliding sleeves 50, and the first fixing device and the second fixing device are respectively connected with the two sliding sleeves 50 through connecting rods 40; the vertical rod 10 is provided with a length scale 11 along the length direction.

When in detection, the ultrasonic signal excitation device 20 is firstly fixed at the top end of the guardrail upright post, and then the ultrasonic signal receiving device 30 is fixed at a proper position, at the moment, because the ultrasonic signal excitation device 20 and the ultrasonic signal receiving device 30 are both fixed on the guardrail upright post, the upright post 10 is not required to be supported, and the upright post 10 naturally falls to the bottom end of the upright post, which is contacted with the bottom endThe reading of the scale 11 at this time is the height L of the ultrasonic signal receiving device 30 from the bottom surface₀The data can be conveniently read out, so that the detection result is more accurate. The ultrasonic signal exciter 22 excites an ultrasonic signal, the ultrasonic signal receiver receives a direct wave signal and a bottom reflection signal from the ultrasonic signal exciter 22, the ultrasonic signal receiver transmits the signals to the detector host 60, the detector host 60 calculates a time difference t between the direct wave signal and the bottom reflection signal, and then the burial depth L of the guardrail column can be calculated according to the propagation velocity v (known) of the signals on the guardrail column, and a specific calculation formula is as follows:

in another embodiment, as shown in FIG. 2, the first and second fastening devices are identical in construction; the first fixing device comprises a fixing frame 21 and a connecting belt 23, the fixing frame 21 is in a minor arc shape, the ultrasonic signal exciter 22 is embedded on the inner side wall of the fixing frame 21, the connecting belt 23 is a wide rope belt, two ends of the connecting belt 23 are respectively connected with two ends of the fixing frame 21, one end of the connecting belt is fixedly connected, and the other end of the connecting belt is adhered by a magic tape.

Compared with the prior art in which a gluing mode is adopted, the hoop type fixing mode is adopted, the fixing and dismounting are highly convenient, and the problems that residual glue needs to be cleaned and equipment devices are easy to damage in the gluing process are solved. In addition, because an iron chain is often welded between the guardrail posts in the actual use process, the ultrasonic signal receiving device 30 adopting an annular device in the prior art cannot be fixed at a proper position of the guardrail posts.

In another embodiment, as shown in fig. 2, the insulating noise reduction layer 24 is respectively disposed on the inner sidewall of the fixing frame 21 and the inner sidewall of the connection band 23, so as to avoid electric leakage and reduce impact noise, and on the other hand, make the incident characteristic of the fluctuation signal obvious and improve the reflectivity, even when encountering a reflection surface with a small impedance difference, the fluctuation signal can still maintain a high reflectivity, and the stability of the fluctuation signal is good, and the interference signal after the pulse signal can be effectively suppressed, so that the detector host 60 can detect the fluctuation signal, and at the same time, the subsequent analysis of the fluctuation signal is facilitated.

In another embodiment, the insulating noise reduction layer 24 is a PE, PP or PET film.

In another embodiment, as shown in fig. 1, the bottom end of the vertical rod 10 is provided with a bottom plate 12, and the 0 scale of the length scale 11 is located on the bottom surface of the bottom plate 12.

The bottom plate 12 is arranged to prevent the sliding sleeve 50 from slipping from the bottom end of the vertical rod 10, and the 0 scale of the length scale 11 is arranged on the bottom surface of the bottom plate 12, so that the height of the ultrasonic signal receiver from the bottom surface can be measured more accurately.

The above-mentioned embodiments only express the specific embodiments of the present invention, and the description thereof is more specific and detailed, but not construed as limiting the scope of the present invention. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the inventive concept, which falls within the scope of the present invention.

Claims

1. The device for the nondestructive detection of the burial depth of the anti-collision guardrail is characterized by comprising an ultrasonic signal excitation device, an ultrasonic signal receiving device, a detector host and a vertical rod, wherein the ultrasonic signal excitation device comprises an ultrasonic signal exciter and a first fixing device for fixing the ultrasonic signal exciter; the upright stanchion is connected with two sliding sleeves in a sliding way, and the first fixing device and the second fixing device are respectively connected with the two sliding sleeves through connecting rods; the upright stanchion is provided with length scales along the length direction.

2. The nondestructive detection device for the burial depth of the crash barrier as recited in claim 1, wherein the first fixing device and the second fixing device are identical in structure; first fixing device includes mount and connecting band, the mount is minor arc form, ultrasonic signal energizer inlays on locating the inside wall of mount, the both ends of connecting band are connected with the both ends of mount respectively, and wherein one end is fixed connection, and the other end bonds for the magic subsides.

3. The nondestructive detection device for the burial depth of the crash barrier as recited in claim 2, wherein the inner side wall of the fixing frame and the inner side wall of the connecting band are respectively provided with an insulating noise reduction layer.

4. The nondestructive detection device for the burial depth of the crash barrier as recited in claim 3, wherein the insulating noise reduction layer is a PE, PP or PET film.

5. The nondestructive detection device for the burial depth of the anti-collision guardrail according to claim 1, wherein a bottom plate is arranged at the bottom end of the upright rod, and the 0-degree scale of the length scale is positioned on the bottom surface of the bottom plate.