CN116106415A - A device for measuring the grouting compactness of prefabricated box girder corrugated pipe channels based on ultrasonic waves - Google Patents

Abstract

The invention discloses a device for measuring grouting compactness of a corrugated pipe hole channel of a prefabricated box girder based on ultrasonic waves, which comprises a supporting seat, wherein two sides of the supporting seat are fixedly connected with a guide rod respectively, each guide rod is connected with a sleeve in a sliding manner, the outer end of each sleeve is fixedly connected with an inclined rod, ultrasonic detection radars are arranged at intervals on the inclined rods, and two sides of each inclined rod are respectively connected with a plurality of supporting wheels in a rotating manner; the support seat is provided with a walking device. According to the invention, the distance between the two diagonal rods can be adjusted, the supporting seat can place the folded diagonal rods into the inner cavity of the prefabricated box girder and walk through the walking device, the inner cavity of the prefabricated box girder detects grouting compactness of the corrugated pipe duct through the ultrasonic detection radar, after the inner cavity of the prefabricated box girder is detected, the two diagonal rods are mutually far away, the walking device falls on the ground, the two diagonal rods are detected from the outside of the prefabricated box girder, and ultrasonic detection can be carried out from the inner side and the outer side of the prefabricated box girder, so that comprehensive detection is achieved.

Description

A device for measuring the grouting compactness of prefabricated box girder corrugated pipe channels based on ultrasonic waves

technical field

The invention relates to the technical field of detection of box girder prefabricated parts, in particular to a device for measuring the grouting compactness of prefabricated box girder bellows channels based on ultrasonic waves.

Background technique

With the rapid development of bridge construction in China, bellows prestressed concrete structures have been widely used. The grouting quality of bellows channels has always been a concern of people. In the current grouting construction of bellows channels, grouting is not dense, there are often Quality problems such as voids and channels not completely filled with cement slurry have led to frequent quality and safety accidents. Similar accidents have attracted strong attention from the engineering community.

The existing technology generally scans the position of the bellows buried in the box girder by detecting radar and electromagnetic wave radar method to detect the grouting density. The electromagnetic wave radar method has no device that can detect both the inside and outside of the box girder, or scan the inside of the box girder. Finally, it is necessary to readjust and adjust the outside of the box girder, resulting in a long detection cycle.

Contents of the invention

The purpose of the present invention is to solve the shortcomings in the prior art, and propose a device for measuring the grouting compactness of the prefabricated box girder corrugated pipe channel based on ultrasonic waves, so as to solve the problems in the prior art.

In order to achieve the above object, the present invention adopts the following technical solutions:

A device for measuring the grouting compactness of prefabricated box girder corrugated pipe channels based on ultrasonic waves, comprising a support base, a guide rod is fixedly connected to both sides of the support base, each guide rod is slidably connected to a sleeve, and the outside of each sleeve One end is fixedly connected to a slanting rod, and the slanting rod is provided with ultrasonic detection radars at intervals, and the two sides of the slanting rod are respectively connected to a plurality of support wheels by rotation;

A walking device is arranged on the support base.

Preferably, the walking device includes a box body, one side of the box body is fixedly connected with a support plate, the box body is provided with a first plane and a second plane, and the first plane and the second plane are respectively provided with driving wheels, so that The upper side of the support seat is provided with guide grooves, and the opposite inner walls of the guide grooves are respectively provided with slide grooves. The support plate is rotatably connected to the support shaft, and the support shaft slides in the guide groove. The limit rod is threaded, and the limit rod locks the support plate parallel to the end of the support seat.

Preferably, the distance from the support plate to the first plane is smaller than the distance from the second plane.

Preferably, a cavity is provided inside the box, a counterweight is provided in the cavity, and a cabinet door is provided on a side of the box away from the support plate.

Preferably, the guide rod is fixedly connected to the inner wall of the casing to support the spring.

Preferably, the inclined rod is fixedly connected to a plurality of support plates at intervals, and each support plate is rotatably connected to a circular shaft, and the circular shaft is fixedly connected to the flat plate, and the box body of the ultrasonic detection radar is fixedly connected to the flat plate, and the flat plate is provided with Through holes, two threaded holes are symmetrically arranged on the oblique rod, and the through holes can be coaxially aligned with the threaded holes respectively and screwed with locking bolts.

The advantage of the present invention is that: the device for measuring the grouting compactness of the prefabricated box girder corrugated pipe channel based on ultrasonic waves provided by the present invention uses the support base as a reference, so that the two casings slide on the guide rods on both sides of the support base, The distance between the two slanting bars can be adjusted, and the supporting seat can be placed into the inner cavity of the prefabricated box girder with the retracted slanting bar and walked through the walking device. After the inspection of the inner cavity of the prefabricated box girder is completed, the two inclined bars are separated from each other, and the walking device falls on the ground. The two inclined bars are tested from the outside of the prefabricated box girder. Ultrasonic testing is carried out on both sides of the inside and outside, that is, from both sides of the bellows channel, so as to detect comprehensively.

In the present invention, by removing the blocking of the limit rod and cooperating with the sliding action of the support shaft and the guide groove, the box body is turned over from one end of the support base to the other end, and then the limit rod is locked at this end, and the limit rod controls the supporting plate. Limit, so that the box body can be turned over, and the box body can be turned over directly, so that the tilt bar does not need to be reversed, and only needs to move back to detect the outside of the prefabricated box girder. After the internal detection and adjustment of the position, there is no need for debugging , so as to improve work efficiency in the process of internal and external detection.

Description of drawings

Fig. 1 is a schematic diagram of the basic structure of the present invention;

Fig. 2 is another perspective view of the present invention;

Fig. 3 is a partial enlarged view of E place in Fig. 2;

Fig. 4 is a schematic diagram of the connection structure between the box body and the support seat of the present invention;

Fig. 5 is a schematic view of the working state of the present invention.

Detailed ways

In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.

As shown in Figures 1-5, the present invention provides a device for measuring the grouting compactness of prefabricated box girder corrugated pipe channels based on ultrasonic waves, which includes a support base 1, and a guide rod 2 is fixedly connected to both sides of the support base 1. Each guide rod 2 is slidably connected to a casing 3, and the outer end of each casing 3 is fixedly connected to a diagonal rod 4, and the diagonal rod 4 is provided with ultrasonic detection radar 5 at intervals, and the two sides of the diagonal rod 4 are connected in rotation respectively. Multiple support wheels 6;

The supporting base 1 is provided with a running device 7 .

The present invention uses the support base 1 as a reference, so that the two bushings 3 slide on the guide rods 2 on both sides of the support base 1, the distance between the two oblique rods 4 can be adjusted, and the oblique rods 4 that the support base 1 will pack up can be adjusted. Put it into the inner cavity of the prefabricated box girder 10 and walk through the walking device 7. The inner cavity of the prefabricated box girder 10 is used to detect the grouting density of the bellows channel through the ultrasonic detection radar 5. In the inner cavity of the prefabricated box girder 10, the After completion, the two oblique bars 4 are separated from each other, and the running gear 7 falls on the ground. The two oblique bars 4 are detected from the outside of the prefabricated box girder 10, and ultrasonic testing can be performed from the inside and outside sides of the prefabricated box girder 10, that is, by Both sides of the bellows channel are detected, so that the detection is comprehensive.

The walking device 7 includes a box body 71, one side of the box body 71 is fixedly connected to a support plate 72, the box body 71 is provided with a first plane 73 and a second plane 74, and the first plane 73 and the second plane 74 are respectively A drive wheel 75 is provided, and the drive wheel 75 is driven by a separate drive motor. The upper side of the support seat 1 is provided with a guide groove 76, and the opposite inner walls of the guide groove 76 are respectively provided with chute 77. The support plate 72 is rotated to connect the support shaft 78, the support shaft 78 slides in the guide groove 76, and the two ends of the support seat 1 are respectively threaded to the limit rod 79, and the limit rod 79 locks the support plate 72 parallel to the support seat 1. end.

By removing the blocking of the stop rod 79, and cooperating with the sliding action of the support shaft 78 and the guide groove 76, the box body 71 is turned from one end of the support seat 1 to the other end, and then the stop rod 79 is locked at this end, and the stop rod 79 limits the support plate 72, so that the box body 71 can be turned over, and the box body 71 is turned over directly, so that the oblique rod 4 does not need to change direction, and only needs to move back, so that the outside of the prefabricated box girder 10 can be detected. After the internal detection and adjustment of the position, there is no need for debugging, so that the work efficiency can be improved during the internal and external detection process.

The inside of the box body 71 is provided with a cavity, the cavity is provided with a counterweight, and the side of the box body 71 away from the support plate 72 is provided with a cabinet door 711 .

The distance from the support plate 72 to the first plane 73 is smaller than the distance from the second plane 74; due to the height difference inside and outside the prefabricated box girder 10, when the first plane 73 is on the bottom surface, the distance between the two inclined bars 4 is small, which is suitable for prefabricated box girders. When the box body 71 is turned over 180 degrees so that the second plane 74 faces downward, in order to make up for the height difference when the box body 71 falls to the ground, the distance between the support plate 72 and the first plane 73 is designed to be less than The distance from the second plane 74, before turning over the box body 71, remove the counterweight in the box body 71, turn over the box body 71 and put it on a forklift or an existing lift truck, then re-put the counterweight, and then put After the box body 71 is slowly lowered to the ground, the box body 71 can avoid toppling due to the inclined rod 4 due to the built-in counterweight, and improve the stability.

In order to enable the box body 71 to move forward after landing, the prefabricated box girder 10 is supported by a plurality of hydraulic jacks 30 on two parallel backing plates 20. When the inclined rod 4 travels to the corresponding hydraulic jack 30, the hydraulic jack 30 Retract first, so that the inclined rod 4 can cross the support point of the hydraulic jack 30 .

The guide rod 2 and the inner wall of the sleeve 3 are fixedly connected to the support spring 31, so that the support wheels 6 on the inside of the two oblique rods 4 are pressed against the outside of the prefabricated box girder 10, and the movement of the prefabricated box girder 10 itself to the running device 7 is used. The direction plays a guiding role, which is fast and convenient.

The inclined rod 4 is fixedly connected to a plurality of support plates 51 at intervals, and each support plate 51 is rotatably connected to a circular shaft 52, and the circular shaft 52 is fixedly connected to a flat plate 53, and the box body of the ultrasonic detection radar 5 is fixedly connected to the flat plate 53, The flat plate 53 is provided with a through hole, and the oblique rod 4 is symmetrically provided with two threaded holes 54 , and the through holes can be coaxially aligned with the threaded holes 54 and screwed with locking bolts.

By flipping the detection surface of the ultrasonic detection radar 5, it is possible to quickly adjust the ultrasonic detection on the inside and outside of the prefabricated box girder 10. Tighten the bolts, then turn over the ultrasonic detection radar 5, the through hole of the plate 53 is aligned with the threaded hole 54 on the other side, and then thread the locking bolts, thereby changing the orientation of the ultrasonic detection radar 5, which can quickly adapt to the inner surface of the prefabricated box girder 10. External ultrasonic detection operation, work efficiently.

The working principle is that the support base 1 is used as a reference, so that the two bushings 3 slide on the guide rods 2 on both sides of the support base 1, and the distance between the two oblique rods 4 can be adjusted, so that the support base 1 can fold up the oblique rods. 4. Put it into the inner cavity of the prefabricated box girder 10 and walk through the walking device 7. The inner cavity of the prefabricated box girder 10 uses the ultrasonic detection radar 5 to detect the grouting compactness of the bellows channel. After the detection is completed, the counterweight in the box body 71 is removed, the box body 71 is turned over and put on a forklift or an existing lift truck, and then the counterweight is put back in, and then the box body 71 is slowly lowered to the ground. The first inclined bar 4 is detected from the outside of the prefabricated box girder 10, and ultrasonic detection can be performed from the inside and outside of the prefabricated box girder 10, that is, from both sides of the bellows tunnel, so as to detect comprehensively.

Although the embodiments of the present invention have been shown and described, those skilled in the art can understand that various changes, modifications and substitutions can be made to these embodiments without departing from the principle and spirit of the present invention. and modifications, the scope of the invention is defined by the appended claims and their equivalents.

Claims (6)

1. The utility model provides a device based on prefabricated case roof beam bellows hole way mud jacking compactness of ultrasonic measurement, includes supporting seat (1), a guide bar (2) are fixed connection respectively to supporting seat (1) both sides, and every guide bar (2) sliding connection sleeve pipe (3), a diagonal rod (4) of every sleeve pipe (3) outer end fixed connection, diagonal rod (4) interval is equipped with ultrasonic detection radar (5), a plurality of supporting wheels (6) are rotated respectively to the both sides of diagonal rod (4);

the support seat (1) is provided with a walking device (7).

2. The device for measuring grouting compactness of corrugated pipe holes of prefabricated box girders based on ultrasonic waves according to claim 1, wherein the device is characterized in that: running gear (7) are including box (71), box (71) one side fixed connection extension board (72), box (71) are equipped with first plane (73) and second plane (74), and first plane (73) and second plane (74) are equipped with drive wheel (75) respectively, supporting seat (1) upside is equipped with guide way (76), the relative inner wall of guide way (76) is equipped with spout (77) respectively, extension board (72) rotate and connect back shaft (78), back shaft (78) slip is in guide way (76), screw thread connection gag lever post (79) are respectively at supporting seat (1) both ends, and gag lever post (79) are with extension board (72) parallel locking at the end of supporting seat (1).

3. The device for measuring grouting compactness of corrugated pipe holes of prefabricated box girders based on ultrasonic waves according to claim 2, wherein the device is characterized in that: the distance from the support plate (72) to the first plane (73) is smaller than the distance from the support plate to the second plane (74).

4. The device for measuring grouting compactness of corrugated pipe holes of prefabricated box girders based on ultrasonic waves according to claim 2, wherein the device is characterized in that: the inside cavity that is equipped with of box (71), be equipped with the balancing weight in the cavity, one side that the extension board (72) was kept away from to box (71) is equipped with cabinet door (711).

5. The device for measuring grouting compactness of corrugated pipe holes of prefabricated box girders based on ultrasonic waves according to claim 1, wherein the device is characterized in that: the guide rod (2) is fixedly connected with the inner wall of the sleeve (3) to support the spring (31).

6. An apparatus for measuring grouting compactness of a corrugated pipe hole channel of a prefabricated box girder based on ultrasonic waves according to any one of claims 1 to 5, wherein: the utility model discloses a locking device for the ultrasonic detection radar, including a plurality of backup pads (51) of diagonal bar (4), every backup pad (51) rotation connection circle axle (52), circle axle (52) fixed connection is dull and stereotyped (53), the box body and the dull and stereotyped (53) fixed connection of ultrasonic detection radar (5), dull and stereotyped (53) are equipped with the through-hole, the symmetry is equipped with two screw holes (54) on diagonal bar (4), the through-hole can be with screw hole (54) coaxial alignment and threaded connection locking bolt respectively.

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