CN210199024U

CN210199024U - Prestressed bridge grouting compactness detection device

Info

Publication number: CN210199024U
Application number: CN201921118551.2U
Authority: CN
Inventors: Chunxiao Huang; 黄春晓; Xinyu Zhu; 朱新雨; Yu'an Wang; 王玉安; Mingke Hao; 郝明科; Honghua Sun; 孙宏华
Original assignee: Construction Engineering Consulting Co Ltd
Current assignee: Construction Engineering Consulting Co Ltd
Priority date: 2019-07-16
Filing date: 2019-07-16
Publication date: 2020-03-27
Anticipated expiration: 2029-07-16

Abstract

The utility model relates to a prestressed bridge compactness detection device that is in milk, including the detection case box, be provided with the exciting hammer in the detection case box and receive the letter probe, the detection case box is connected with signal amplifier, and signal amplifier is connected with signal analyzer, the detection case box is connected with and removes the seat, and it has two bracing pieces to remove to articulate on the seat, is provided with hoisting device between two bracing pieces, the detection case box is installed on hoisting device. The utility model discloses have the effect of conveniently detecting bridge eminence prestressed duct grout compactness.

Description

Prestressed bridge grouting compactness detection device

Technical Field

The utility model belongs to the technical field of a bridge defect detects's technique and specifically relates to a closely knit degree detection device of prestressed bridge grout is related to.

Background

A prestressed concrete bridge is built by prestressed concrete beam plates, the prestressed concrete structure utilizes the counter force of the pretension of reinforcing steel bars to enable concrete to be pre-compressed before loading, the generated prestressed state is used for reducing or offsetting tensile stress caused by external load, and therefore the defect of tensile strength of the prestressed concrete bridge is made up by the high compressive strength of the concrete, and the phenomenon that cracks appear too early after the concrete is tensioned is greatly reduced.

At present, the beam slab of a large prestressed concrete bridge is mostly produced by adopting a post-tensioning method, when the prestressed concrete beam slab is produced by the post-tensioning method, a pore channel of a prestressed tendon is reserved in advance, then concrete is poured, after the poured concrete reaches the specified strength, a steel bar penetrating through the reserved pore channel in the concrete is stretched again, anchorage is carried out at two ends of the beam slab by using an anchorage device, and finally grouting is carried out in the prestressed pore channel, whether grouting is compact or not has great influence on the strength of the beam slab, the bearing capacity of the beam slab can be reduced due to the fact that grouting is not compact, the prestressed tendon is easily corroded at a defect position, and potential safety hazards are brought to the bridge.

The patent document with the publication number of CN207440010U discloses a prestressed duct grouting compactness detection device based on an impact echo, which comprises a dynamic signal analyzer, a preamplifier and an impact detection assembly, which are electrically connected in sequence, wherein the impact detection assembly comprises a detection box, and the detection box is provided with a detection surface for being coupled with a surface to be detected of a prestressed bridge; the detection surface is provided with an impact hole; the impact assembly comprises an impact hammer which is arranged in the detection box and is vertical to the detection surface and a driver which is used for driving the impact hammer to do linear reciprocating motion in the impact hole so as to strike the surface to be detected; a handheld probe is further arranged in the detection box, and the detection end of the handheld probe protrudes out of the detection surface to be coupled with the surface to be detected, so that reflected waves are received.

Above-mentioned prestressed duct grouting compactness detection device based on strike echo if detecting the bridge, when the ground of inspection personnel under the pier stands, because the position of a lot of prestressed duct is all higher on the bridge, inspection personnel need constantly scramble and adopt some detections, very inconvenient and working strength is very big.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a closely knit degree detection device of prestressed bridge grout, it has the effect that conveniently detects closely knit degree of bridge eminence prestressed duct grout.

The above object of the present invention is achieved by the following technical solutions:

the utility model provides a closely knit degree detection device of prestressed bridge grout, includes the detection case box, be provided with the exciting hammer in the detection case box and receive the signal probe, the detection case box is connected with signal amplifier, and signal amplifier is connected with signal analyzer, the detection case box is connected with and removes the seat, and it has two bracing pieces to remove to articulate on the seat, is provided with hoisting device on the bracing piece, the detection case box is installed on hoisting device.

By adopting the technical scheme, when the grouting compactness of the prestressed duct at the high position of the bridge is detected, the detection personnel move the movable seat to the ground close to the prestressed duct, the detection box is lifted to the height capable of reaching the position of the prestressed duct by using the lifting device, the support rod is pressed to enable the detection box to be attached to the surface to be detected, the driving device of the vibration hammer is started to enable the vibration hammer to strike the surface to be detected, the impact echo transmitted from the prestressed duct is received by the signal receiving probe, the impact echo is amplified by the signal amplifier and analyzed by the signal analyzer, and the grouting condition of the detection point can be judged by the detection personnel.

The utility model discloses a further set up to: the lifting device comprises a motor, the motor is fixed on one supporting rod, the motor is connected with a lead screw, a loop bar is arranged on the lead screw in a threaded fit manner, a sliding bar is arranged on the other supporting rod, a plurality of limiting sleeves are arranged on the two supporting rods, the loop bar is in sliding fit with the limiting sleeves, the sliding bar is in sliding fit with the limiting sleeves, and the detection box is hinged between the loop bar and the sliding bar.

Through adopting above-mentioned technical scheme, when carrying out the closely knit degree detection of grout to bridge eminence prestressing force pore canal, if making the detection case box can reach the height at point of waiting to measure the place, the starter motor, the motor will drive the lead screw and rotate, the lead screw rotates and will drive the loop bar and slide in spacing cover along its length direction, because the detection case box articulates between loop bar and slide bar, the detection case box will take the slide bar to remove along with the loop bar, thereby change the height that the detection case box can reach, when the detection case box can reach the height at prestressing force pore canal place, push down the bracing piece and make the laminating of detection case box on the face of waiting to measure, can carry out follow-up test.

The utility model discloses a further set up to: the bracing piece has seted up the spout along its length direction, it has the ejector pin to articulate on the seat to remove, ejector pin and bracing piece coplane, and the non-articulated end fixing of ejector pin has the slider, and slider sliding fit is fixed with the baffle on removing the seat in the spout, is provided with a plurality of pressure springs on the baffle, and the one end of pressure spring is supported on the baffle, and the other end supports on the ejector pin.

Through adopting above-mentioned technical scheme, when needs make the detection box paste on the face that awaits measuring, thereby the pressure spring can promote the connecting rod and promote the ejector pin, because slider sliding fit on the ejector pin is in the spout of bracing piece, the slider will slide in the spout under the promotion of pressure spring to force the bracing piece to press to the face that awaits measuring, and then the bracing piece will drive loop bar and slide bar and press to the face that awaits measuring, further make the laminating of detection box on the face that awaits measuring, need not the manual bracing piece that pushes down of people, measuring staff's intensity of labour has been alleviateed.

The utility model discloses a further set up to: a plurality of pulleys are arranged on the movable seat.

Through adopting above-mentioned technical scheme, set up the pulley and can make things convenient for the survey crew to remove the seat through the pulley and remove the position that needs on removing the seat, avoid manual transport to cause intensity of labour's increase.

The utility model discloses a further set up to: the movable seat is provided with a handrail.

By adopting the technical scheme, the handrail can facilitate the detection personnel to push the movable seat to move to different detection positions, and the part for supplying force by hand is more convenient to use.

The utility model discloses a further set up to: the end part of the loop bar close to the motor is fixed with a baffle, and the end part of the sliding bar close to the movable seat is fixed with a baffle.

Through adopting above-mentioned technical scheme, the separation blade that sets up on loop bar and the slide bar can prevent that loop bar and slide bar from deviating from the stop collar when removing extreme position on the stop collar.

The utility model discloses a further set up to: the telescopic rod is provided with scales, the sliding rod is provided with scales, and the supporting rod is provided with scales.

Through adopting above-mentioned technical scheme, the scale that sets up on loop bar, slide bar and the bracing piece can make surveying staff judge the length that loop bar and slide bar removed for the bracing piece to convenient height at acquisition measuring point place is favorable to supplementary surveying staff to fix a position suspicious defect point.

The utility model discloses a further set up to: and an electric paint spray gun is arranged on the detection box.

By adopting the technical scheme, when a grouting defect possibly exists at a certain part of a bridge, the electric paint spraying gun can be started to mark at the suspicious defect position, so that the position where the defect is located can be found conveniently, and the practicability of the device is improved.

To sum up, the utility model discloses a beneficial technological effect does:

1. when the grouting compactness of the prestressed duct at the high position of the bridge is detected, a detector moves the movable seat to the ground close to the prestressed duct, the detection box is lifted to the height which can reach the position of the prestressed duct by using the lifting device, the support rod is pressed to enable the detection box to be attached to the surface to be detected, the driving device of the vibration exciter is started to enable the vibration exciter to knock the surface to be detected, the signal receiving probe receives shock waves transmitted from the prestressed duct, and the shock waves are amplified by the signal amplifier and analyzed by the signal analyzer to enable the detector to judge the grouting condition at the detection point;

2. the motor and the screw rod can drive the sleeve rod and the sliding rod to slide on the limiting sleeve, so that the detection box is driven to reach the specified height of the pre-stressed duct to be detected; the ejector rod can force the detection box to be attached to the surface to be detected under the action of the pressure spring, so that the labor intensity of measuring personnel is reduced; the movable seat can be conveniently moved to a required position by a measurer through the pulley;

3. the scale can conveniently obtain the height of the measuring point, and is beneficial to assisting a measuring person to position the suspicious defect point; when a grouting defect possibly existing in a certain part of the bridge is detected, an electric paint spray gun can be started to mark the suspected defect position.

Drawings

Fig. 1 is a schematic view of the overall structure of the present invention;

fig. 2 is a schematic view of the overall structure of the present invention;

FIG. 3 is a schematic diagram of a vertical prestressed duct II;

FIG. 4 is a schematic diagram of a third time of detecting a prestressed duct on the side surface of a beam slab;

in the figure, 1, a movable seat; 11. a pulley; 12. a handrail; 13. a baffle plate; 14. a pressure spring; 21. a support bar; 211. a chute; 212. an electric motor; 213. a screw rod; 22. a top rod; 221. a slider; 222. a connecting rod; 23. a loop bar; 24. a limiting sleeve; 25. a slide bar; 26. a baffle plate; 27. calibration; 3. a detection box; 31. a vibration hammer is excited; 32. a trusted probe; 33. an electric paint spray gun; 4. a signal amplifier; 5. a signal analyzer; 6. a vertical plane; 61. a first prestressed duct; 62. a second prestressed duct; 7. a beam panel side; 71. and a third prestressed duct.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings.

Referring to fig. 1 and 2, for the utility model discloses a closely knit degree detection device of prestressing force bridge grout, including removing seat 1, remove seat 1 and be long cubic, the lower surface of removing seat 1 is provided with a plurality of pulleys 11, removes seat 1 and can be subaerial free slip through pulley 11, removes and is provided with handrail 12 on the seat 1, and handrail 12 can make things convenient for the measurement personnel to promote to remove seat 1 and remove different detection positions.

Referring to fig. 1 and 2, the moving seat 1 is provided with two support rods 21, one end of each support rod 21 is hinged to one side surface of the moving seat 1, the shaft body of the support rod 21 is parallel to the hinged side surface, the two support rods 21 are respectively hinged on the two opposite side surfaces of the moving seat 1, the axes of the hinged points of the two support rods 21 are overlapped, the support rod 21 is provided with a sliding groove 211 along the length direction thereof, the two end parts of the sliding groove 211 are both positioned in the shaft body of the support rod 21, the moving seat 1 is provided with two ejector rods 22, one end of each ejector rod 22 is hinged on the hinged side surface of the support rod 21, the other end is fixed with a sliding block 221, the sliding block 221 is in sliding fit in the sliding groove 211, the two ejector rods 22 are respectively hinged on the two opposite side surfaces, and the hinge points of the two ejector rods 22 correspond to each other, and a distance is arranged between the hinge point of the ejector rod 22 and the hinge point of the support rod 21.

Referring to fig. 1 and 2, a connecting rod 222 is arranged between the two push rods 22, two ends of the connecting rod 222 are respectively fixed on the two push rods 22, the connecting rod 222 is parallel to the upper surface of the movable seat 1, a baffle 13 is fixed on the upper surface of the movable seat 1, the baffle 13 is perpendicular to the side surface of the movable seat 1 hinged to the supporting rod 21, a plurality of pressure springs 14 are arranged on the baffle 13, one ends of the pressure springs 14 abut against the connecting rod 222 and are detachably connected with the connecting rod 222 through a buckle, and the other ends abut against the baffle 13 and are detachably connected with the baffle 13 through a buckle.

Referring to fig. 1 and 2, a motor 212 is fixed at a position of one support rod 21 close to the movable base 1, a lead screw 213 is coaxially fixed on an output shaft of the motor 212, a shaft of the lead screw 213 is parallel to a shaft of the support rod 21, a loop bar 23 is in threaded fit on the lead screw 213, a plurality of position-limiting sleeves 24 are fixed on the support rod 21, the loop bar 23 is in sliding fit on the position-limiting sleeves 24, and a blocking piece 26 is fixed at an end of the loop bar 23 close to the motor 212 to prevent the loop bar 23 from being separated from the position-limiting sleeves 24.

Referring to fig. 1 and 2, a plurality of position-limiting sleeves 24 are also fixed on another support rod 21 without the motor 212, a sliding rod 25 is slidably fitted in the plurality of position-limiting sleeves 24 on the support rod 21 without the motor 212, the rod body of the sliding rod 25 is parallel to the support rod 21, the length of the sliding rod 25 is equal to that of the sleeve rod 23, a stop piece 26 is also fixed at the end of the sliding rod 25 close to the movable seat 1 to prevent the sliding rod 25 from being separated from the position-limiting sleeves 24, and scales 27 are arranged on the sleeve rod 23, the sliding rod 25 and the support rod 21, and the scales 27 are used for displaying the moving length of the sleeve rod 23 and the sliding rod 25 relative to the support rod 21.

Referring to fig. 1 and 2, a detection box 3 is arranged at the end part of the loop bar 23 far away from the motor 212, the detection box 3 is hinged between the loop bar 23 and the sliding bar 25, an exciting hammer 31 is arranged on the detection box 3, the head of the exciting hammer 31 extends out of the detection box 3, a signal receiving probe 32 is further arranged on the detection box 3, one end of the signal receiving probe 32 extends out of the detection box 3, and the exciting hammer 31 and the signal receiving probe 32 are arranged on the same surface of the detection box 3.

Referring to fig. 1 and 2, an electric paint spray gun 33 is arranged on the detection box 3, a gun mouth of the electric paint spray gun 33 extends out of the detection box 3, the electric paint spray gun 33 is connected with a power supply, when it is detected that a grouting defect possibly exists at a certain position of a bridge, the electric paint spray gun 33 can be started to mark the suspected defect position, so that the position of the defect can be found conveniently, and the gun mouth of the electric paint spray gun 33 and the exciting hammer 31 are arranged on the same plane of the detection box 3.

Referring to fig. 1 and 2, a signal amplifier 4 is arranged on the movable base 1, one end of the signal amplifier 4 is connected with the detection box 3 through a data line, the signal amplifier 4 is further connected with a signal analyzer 5, the signal analyzer 5 is arranged on the movable base 1, the signal analyzer 5 is connected with the signal amplifier 4 through a data line, the signal amplifier 4 is used for amplifying signals transmitted from the detection box 3, and the signal analyzer 5 is used for analyzing signals transmitted from the signal amplifier 4, so that a detector can judge the grouting condition at the detection point.

Referring to fig. 1 and 3, when detecting the grouting compactness of the prestressed duct one 61 at the lower part of the vertical surface 6 of the bridge, the inspector pushes the handrail 12 to move the movable seat 1 to the ground close to the prestressed duct one 61, so that the inspection box 3 is attached to the detection point on the vertical surface 6, the pressure spring 14 can push the connecting rod 222 to push the push rod 22, since the sliding block 221 of the push rod 22 is slidably fitted in the sliding groove 211 of the supporting rod 21, the sliding block 221 will slide in the sliding groove 211, so that the supporting rod 21 is forced to press towards the vertical surface 6, and further, the surface of the inspection box 3 provided with the exciting hammer 31 and the signal receiving probe 32 is attached to the vertical surface 6, at this time, the driving device of the exciting hammer 31 is started to make the exciting hammer 31 strike the vertical surface 6, the signal receiving probe 32 will receive the impact echo transmitted from the prestressed duct one 61, the impact echo is amplified by the signal amplifier 4 and analyzed by the signal analyzer 5, so that the detection personnel can judge the grouting condition at the detection point.

Referring to fig. 3 and 4, when detecting the grouting compactness of the second prestressed duct 62 at the higher position of the vertical surface 6 of the bridge or the third prestressed duct 71 on the side surface 7 of the beam slab, the inspector moves the movable base 1 to the ground close to the second prestressed duct 62 or the third prestressed duct 71 by pushing the handrail 12, starts the motor 212, the motor 212 drives the lead screw 213 to rotate, the lead screw 213 rotates to drive the loop bar 23 to slide in the stop collar 24 along the length direction thereof, so as to change the height which can be reached by the detection box 3, and when the detection box 3 can reach the height of the second prestressed duct 62 or the third prestressed duct 71, pushes the movable base 1 to make the surface of the detection box 3 provided with the excitation hammer 31 and the trusted probe 32 be attached to the vertical surface 6 or the side surface 7 of the beam slab, so as to perform subsequent tests.

The embodiment of the present invention is a preferred embodiment of the present invention, which is not limited in this way to the protection scope of the present invention, so: all equivalent changes made according to the structure, shape and principle of the utility model are covered within the protection scope of the utility model.

Claims

1. The utility model provides a prestressed bridge grouting compactness detection device, includes detection case (3), be provided with in detection case (3) shock hammer (31) and receive signal probe (32), detection case (3) are connected with signal amplifier (4), and signal amplifier (4) are connected with signal analysis appearance (5), its characterized in that: detection case (3) are connected with and remove seat (1), and it has two bracing pieces (21) to hinge on removing seat (1), is provided with hoisting device on bracing piece (21), install on hoisting device detection case (3).

2. The prestressed bridge grouting compactness detecting device according to claim 1, characterized in that: the lifting device comprises a motor (212), the motor (212) is fixed on one support rod (21), the motor (212) is connected with a screw rod (213), a loop bar (23) is matched with the screw rod (213) in a threaded manner, a sliding rod (25) is arranged on the other support rod (21), a plurality of limiting sleeves (24) are arranged on the support rods (21), the loop bar (23) is matched with the limiting sleeves (24) in a sliding manner, the sliding rod (25) is matched with the limiting sleeves (24) in a sliding manner, and the detection box (3) is hinged between the loop bar (23) and the sliding rod (25).

3. The prestressed bridge grouting compactness detecting device according to claim 2, characterized in that: the utility model discloses a supporting rod, including bracing piece (21), removal seat (1), push rod (22) and bracing piece (21), bracing piece (21) have seted up spout (211) along its length direction, it has push rod (22) to articulate on the removal seat (1), and push rod (22) and bracing piece (21) coplane, and push rod (22) are not articulated end fixing have slider (221), and slider (221) sliding fit is in spout (211), removes and is fixed with baffle (13) on seat (1), is provided with a plurality of pressure springs (14) on baffle (13), and the one end of pressure spring (14) is supported on baffle (13), and the other.

4. The prestressed bridge grouting compactness detecting device according to claim 3, characterized in that: the movable seat (1) is provided with a plurality of pulleys (11).

5. The prestressed bridge grouting compactness detecting device according to claim 4, characterized in that: the movable seat (1) is provided with a handrail (12).

6. The prestressed bridge grouting compactness detecting device according to any one of claims 2-5, wherein: a blocking piece (26) is fixed at the end part of the loop bar (23) close to the motor (212), and a blocking piece (26) is fixed at the end part of the sliding bar (25) close to the movable seat (1).

7. The prestressed bridge grouting compactness detecting device according to any one of claims 2-5, wherein: the sleeve rod (23) is provided with scales (27), the sliding rod (25) is provided with scales (27), and the support rod (21) is provided with scales (27).

8. The prestressed bridge grouting compactness detecting device according to any one of claims 1-5, wherein: an electric paint spray gun (33) is arranged on the detection box (3).