Central limiting walking device for infrared detection of cracks of PHC (prestressed high-strength concrete) pipe pile

Abstract

The utility model discloses a PHC pipe pile crack infrared detection center limiting walking device, and relates to the technical field of port and navigation channel engineering. The device comprises a traction device, a limiting bracket, a walking mechanism and a camera probe, wherein the traction device comprises a driving device and a traction rope; the multiple sets of walking mechanisms are installed around the limiting support. Each walking mechanism comprises a guide connecting rod, a universal wheel and a contraction spring. The universal wheels make contact with the inner wall of the PHC pipe pile. According to the utility model, the camera shooting probe adopting an in-hole camera shooting method can be ensured to walk in the middle of the PHC pipe pile in a wharf project without swinging, so that the camera shooting probe can circumferentially and uniformly scan and measure the inner wall of the pipe pile in a hole, and a complete and real image of the inner wall structure of the PHC pipe pile is obtained.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of port and waterway engineering, more specifically, it is a kind of PHC pipe pile crack infrared detection centering limiting walking device. BACKGROUND

[0002] PHC pipe pile (prestressed high-strength concrete pipe pile) has the advantages of high bearing capacity, low unit cost, convenient construction, wide adaptability to geological conditions and is widely used in various wharf engineering; before the upper structure of wharf engineering is poured, the integrity of PHC pipe pile must be detected, and PHC pipe pile integrity detection is an important link to ensure the quality of pile foundation engineering.

[0003] Common PHC pipe pile integrity detection methods include low-strain reflected wave method, high-strain method and hole camera method; the low-strain reflected wave method is suitable for preliminary screening of short pile (length less than 30m), and it is difficult to quantitatively judge the defect degree and position of pile body when the pile length is longer; the high-strain method can detect the bearing capacity and integrity of pile foundation at the same time, and its equipment is complex, the detection cost is high, it is sensitive to shallow defects of pile body, and the accuracy of deep defects is low; the hole camera method overcomes all the shortcomings of low-strain reflected wave method and high-strain method, and it has simple equipment, high detection accuracy and low cost, and is suitable for integrity detection of PHC pipe pile with large length in wharf engineering; since the diameter of PHC pipe pile in wharf engineering is large (pipe pile outer diameter is greater than 800mm, pipe wall inner diameter is greater than 760mm), and the diameter of camera probe of hole camera method is small (diameter is 60mm), when the camera probe is directly put into the PHC pipe pile for detection, the camera probe is easy to swing and cannot be centered and uniformly detected in the hole, secondly, part of the pile foundation PHC pipe pile in wharf engineering is inclined pile, and the camera probe of hole camera method can only detect the pipe wall at the bottom of inclined surface of pipe pile, so the detection range is limited, and the hole camera method cannot complete and clearly image in the above two cases, so the detection result affects the integrity identification of PHC pipe pile; the typical wharf PHC pipe pile arrangement section view is shown in Figure 3 .

[0004] Therefore, it is necessary to develop a PHC pipe pile crack infrared detection centering limiting walking device. UTILITY MODEL CONTENTS

[0005] The utility model aims at overcoming the shortcomings of the above background technology, and provides a kind of PHC pipe pile crack infrared detection centering limiting walking device.

[0006] In order to achieve the above object, the technical scheme of the utility model is: a PHC pipe pile crack infrared detection centering limiting walking device, characterized in that: comprising traction device, limiting support, walking mechanism and camera probe, the traction device comprises the drive device arranged at the PHC pipe pile pipe mouth and the traction rope which is wound on the drive device at one end and is connected with the drive device, and is connected with the limiting support at the other end; a plurality of walking mechanisms are installed around the limiting support, and the walking mechanism comprises a guide link, a universal wheel and a contraction spring; one end of the guide link is hinged with the limiting support, and the other end is connected with the universal wheel; the universal wheel is in contact with the inner wall of the PHC pipe pile; one end of the contraction spring is connected with the guide link, and the other end is connected with the limiting support; the camera probe is arranged in the middle of the limiting support.

[0007] In the above technical scheme, the camera probe is installed and fixed in the camera probe protection cover, and the cable and data line of the camera probe are drawn out of the PHC pipe pile pipe mouth.

[0008] In the above technical scheme, the limiting support comprises an upper transverse circular ring and a lower transverse circular ring, and the upper transverse circular ring and the lower transverse circular ring are connected through a plurality of vertical reinforcing rods; the camera probe protection cover is located at the center of the upper transverse circular ring and the lower transverse circular ring, and the upper transverse circular ring and the lower transverse circular ring are connected with the camera probe protection cover through a plurality of transverse supporting rods.

[0009] In the above technical scheme, the vertical reinforcing rod has four roots, and the four vertical reinforcing rods are evenly arranged at equal intervals between the upper transverse circular ring and the lower transverse circular ring; the transverse supporting rod has eight roots, and the four transverse supporting rods are evenly connected with the camera probe protection cover and the upper transverse circular ring at equal intervals in a radial manner, and the four transverse supporting rods are evenly connected with the camera probe protection cover and the lower transverse circular ring at equal intervals in a radial manner.

[0010] In the above technical scheme, the walking mechanism has eight groups, and the guide links of the four groups of walking mechanisms are hingedly connected with the upper transverse circular ring at equal intervals, the guide links of the four groups of walking mechanisms are hingedly connected with the lower transverse circular ring at equal intervals, and the contraction springs are connected with the vertical reinforcing rods.

[0011] In the above technical scheme, the traction rope has two roots, and the length scale mark is arranged on the traction rope.

[0012] Compared with the prior art, the utility model has the following advantages:

[0013] 1) The utility model can ensure that the camera probe of the hole camera method walks in the center of the wharf engineering PHC pipe pile (straight pile) and does not appear to sway and shake, can make the camera probe uniformly scan the inner wall of the pipe pile in the hole, and obtain the complete and real image of the inner wall structure of the PHC pipe pile.

[0014] 2)The utility model discloses can ensure that the camera probe of hole camera method is in the middle walking in the wharf engineering PHC pipe pile (inclined pile), and does not appear the phenomenon of sticking to the edge, can make the camera probe in the hole uniform scanning pipe pile inner wall, obtains the complete real image of the PHC pipe pile inner wall structure.

[0015] 3)The utility model discloses the scale of traction rope, can correspond the defect and depth position of the camera probe of wharf engineering PHC pipe pile, effectively distinguishes the position of pipe pile defect.

[0016] 4)The utility model discloses simple structure, convenient operation, and the obvious engineering economic benefit. BRIEF DESCRIPTION OF DRAWINGS

[0017] Figure 1 It is the elevation section view of the utility model.

[0018] Figure 2 It is the plan view of the limiting support.

[0019] Figure 3 It is the PHC pipe pile arrangement section view.

[0020] Among them, 100-pulling device, 110-driving device, 120-pulling rope, 200-limiting support, 210-upper horizontal ring, 220-lower horizontal ring, 230-vertical reinforcing rod, 240-horizontal support rod, 300-traveling mechanism, 310-guiding link, 320-universal wheel, 330-contracting spring, 400-camera probe, 410-camera probe protection cover, 420-cable and data line, 500-PHC pipe pile. DETAILED DESCRIPTION

[0021] The utility model discloses the implementation condition of the embodiment of the utility model is explained in detail below in conjunction with the drawings, but they do not constitute the limitation to the utility model, just for example. Meanwhile through the explanation, the advantage of the utility model will become more clear and easy to understand.

[0022] As shown in the drawings, the PHC pipe pile crack infrared detection centering limiting walking device has the following characteristics: the device comprises a traction device 100, a limiting support 200, a walking mechanism 300 and a camera probe 400; the traction device 100 comprises a driving device 110 arranged at the pipe opening of a PHC pipe pile 500 and a traction rope 120 wound on the driving device 110 at one end and connected with the driving device 110 and connected with the limiting support 200 at the other end; a plurality of walking mechanisms 300 are installed around the limiting support 200, and the walking mechanism 300 comprises a guide connecting rod 310, a universal wheel 320 and a contraction spring 330; one end of the guide connecting rod 310 is hinged with the limiting support 200, and the other end is connected with the universal wheel 320; the universal wheel 320 is in contact with the inner wall of the PHC pipe pile 500; one end of the contraction spring 330 is connected with the guide connecting rod 310, and the other end is connected with the limiting support 200; the camera probe 400 is arranged in the middle of the limiting support 200, and the probe part of the camera probe 400 extends downward from the walking mechanism 300.

[0023] The camera probe 400 is installed and fixed in the camera probe protection cover 410, and the cable and data line 420 of the camera probe 400 extend out of the pipe opening of the PHC pipe pile 500.

[0024] The limiting support 200 comprises an upper transverse circular ring 210 and a lower transverse circular ring 220, and a plurality of vertical reinforcing rods 230 are arranged between the upper transverse circular ring 210 and the lower transverse circular ring 220; the camera probe protection cover 410 is located at the center of the upper transverse circular ring 210 and the lower transverse circular ring 220, and the upper transverse circular ring 210 and the lower transverse circular ring 220 are connected with the camera probe protection cover 410 through a plurality of transverse support rods 240.

[0025] The vertical reinforcing rod 230 has four rods, and the four vertical reinforcing rods 230 are evenly arranged at equal intervals between the upper transverse circular ring 210 and the lower transverse circular ring 220; the transverse support rod 240 has eight rods, and four transverse support rods 240 are connected with the camera probe protection cover 410 and the upper transverse circular ring 210 at equal intervals in a radial manner, and four transverse support rods 240 are connected with the camera probe protection cover 410 and the lower transverse circular ring 220 at equal intervals in a radial manner; the transverse support rod 240 is connected with the upper transverse circular ring 210 and the lower transverse circular ring 220 and the vertical reinforcing rod 230.

[0026] The walking mechanism 300 has eight groups, four groups of walking mechanism 300 guide connecting rod 310 equal interval evenly with the upper transverse ring 210 hinge, four groups of walking mechanism 300 guide connecting rod 310 equal interval evenly with the lower transverse ring 220 hinge, contraction spring 330 and vertical reinforcement rod 230 connection; contraction spring 330 horizontal to one end and vertical reinforcement rod 230 connection, the other end and guide connecting rod 310 connection, under the action of the thrust of contraction spring 330, make universal wheel 320 close to the inner wall of PHC pipe pile 500.

[0027] The traction rope 120 has two, traction rope 120 set length scale mark.

[0028] A kind of PHC pipe pile crack infrared detection center limiting walking device, comprising the following steps:

[0029] Step 1: install and fix camera probe 400 in camera probe protection cover 410, cable and data line 420 are wound to PHC pipe pile 500 pipe orifice vicinity;

[0030] Step 2: the lower end of traction rope 120 is connected with limiting support 200, and the upper end is wound on driving device 110;Start driving device 110, make limiting support 200 and walking mechanism 300 enter the hole of PHC pipe pile 500, brake driving device 110;

[0031] Step 3: start driving device 110, traction rope 120 hangs limiting support 200 and walking mechanism 300 and walks downward under the action of gravity, camera probe 400 begins to detect the integrity of PHC pipe pile 500 camera detection;

[0032] Step 4: view the detection image obtained by camera probe 400, if PHC pipe pile 500 crack and other damage structure are found, brake driving device 110, read the scale of traction rope 120, find the position of PHC pipe pile 500 crack and other damage;

[0033] Step 5: repeat steps 3-4, continue to detect to the lowest end of PHC pipe pile 500, brake driving device 110;

[0034] Step 6: start driving device 110, traction rope 120 hangs limiting support 200 and walking mechanism 300 and walks upward against the action of gravity, reaches PHC pipe pile PHC pipe pile 500, completes the detection of one PHC pipe pile 500.

[0035] In the crack detection process of the PHC pipe pile 500, the camera probe 400 can uniformly detect the complete and clear image of the inner wall of the PHC pipe pile 500, because the camera probe 400 is installed at the center of the limiting support 200 through the camera probe protection cover 410; the universal wheel 320 of the walking mechanism 300 is tightly attached to the inner wall of the PHC pipe pile 500 under the thrust of the contraction spring 330, so that the camera probe 400 does not shake when walking in the PHC pipe pile 500.

[0036] The utility model can ensure that the camera probe 400 of the hole camera method walks in the center of the PHC pipe pile 500 (straight pile / inclined pile) of the wharf engineering and does not shake, can make the camera probe 400 uniformly scan the inner wall of the pipe pile in the hole, and obtain the complete and real image of the inner wall structure of the PHC pipe pile 500; the traction rope 120 of the utility model has a scale, can correspond the defect and depth position of the camera probe 400 to the measured PHC pipe pile 500 (if any) of the wharf engineering, and effectively judge the position of the pipe pile defect; the utility model has the advantages of simple structure, convenient operation and obvious engineering economic benefits.

[0037] Other unexplained parts belong to the prior art.

Claims

1. A PHC pipe pile crack infrared detection centering limiting walking device, characterized in that: The utility model provides a kind of PHC pipe pile driving device, including traction device (100), limiting support (200), walking mechanism (300) and camera probe (400), the traction device (100) includes the driving device (110) being arranged at the pipe mouth of PHC pipe pile (500) and the traction rope (120) being wound on the driving device (110) and being connected with the driving device (110) at one end, and being connected with the limiting support (200) at the other end;Multiple groups of the walking mechanism (300) are installed around the limiting support (200), and the walking mechanism (300) includes guide link (310), universal wheel (320) and contraction spring (330);The guide link (310) is hinged at one end with the limiting support (200) and connected with the universal wheel (320) at the other end;The universal wheel (320) is in contact with the inner wall of the PHC pipe pile (500);The contraction spring (330) is connected at one end with the guide link (310) and at the other end with the limiting support (200);The camera probe (400) is arranged in the middle of the limiting support (200).

2. The walking device for centering and limiting the travel of the infrared detection of cracks in PHC piles according to claim 1, characterized in that: The camera probe (400) is installed and fixed in the camera probe protective cover (410), and the cable and data line (420) of the camera probe (400) extend out of the pipe mouth of the PHC pipe pile (500).

3. The walking device for centering and limiting the travel of the infrared detection of cracks in PHC piles according to claim 2, characterized in that: The limiting support (200) includes upper transverse circular ring (210) and lower transverse circular ring (220), and the upper transverse circular ring (210) and the lower transverse circular ring (220) are connected by a plurality of vertical reinforcing bars (230);The camera probe protective cover (410) is located at the center of the upper transverse circular ring (210) and the lower transverse circular ring (220), and the upper transverse circular ring (210) and the lower transverse circular ring (220) are connected with the camera probe protective cover (410) by a plurality of transverse support bars (240).

4. The walking device for centering and limiting the travel of the infrared detection device for cracks in PHC pipe piles according to claim 3, characterized in that: The vertical reinforcing bars (230) have four roots, and the four vertical reinforcing bars (230) are evenly arranged at equal intervals between the upper transverse circular ring (210) and the lower transverse circular ring (220);The transverse support bars (240) have eight roots, and four transverse support bars (240) are evenly connected with the camera probe protective cover (410) and the upper transverse circular ring (210) at equal intervals in a radial manner, and four transverse support bars (240) are evenly connected with the camera probe protective cover (410) and the lower transverse circular ring (220) at equal intervals in a radial manner.

5. The walking device for centering and limiting the travel of the infrared detection device for cracks in PHC piles according to claim 4, characterized in that: The walking mechanism (300) has eight groups, and the guide links (310) of four groups of the walking mechanism (300) are hingedly connected with the upper transverse circular ring (210) at equal intervals, the guide links (310) of four groups of the walking mechanism (300) are hingedly connected with the lower transverse circular ring (220) at equal intervals, and the contraction springs (330) are connected with the vertical reinforcing bars (230).

6. The walking device for centering and limiting the travel of the infrared detection of cracks in PHC piles according to claim 1, characterized in that: The traction rope (120) has two roots, and the traction rope (120) is provided with length scale marks.

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