CN109959931B - Automatic scanning device and detection method for full-measuring line for quality detection of tunnel second lining - Google Patents
Automatic scanning device and detection method for full-measuring line for quality detection of tunnel second lining Download PDFInfo
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- CN109959931B CN109959931B CN201910138299.XA CN201910138299A CN109959931B CN 109959931 B CN109959931 B CN 109959931B CN 201910138299 A CN201910138299 A CN 201910138299A CN 109959931 B CN109959931 B CN 109959931B
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
- G01S13/00—Systems using the reflection or reradiation of radio waves, e.g. radar systems; Analogous systems using reflection or reradiation of waves whose nature or wavelength is irrelevant or unspecified
- G01S13/88—Radar or analogous systems specially adapted for specific applications
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
- G01S7/00—Details of systems according to groups G01S13/00, G01S15/00, G01S17/00
- G01S7/02—Details of systems according to groups G01S13/00, G01S15/00, G01S17/00 of systems according to group G01S13/00
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- Radar, Positioning & Navigation (AREA)
- Remote Sensing (AREA)
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- Computer Networks & Wireless Communication (AREA)
- General Physics & Mathematics (AREA)
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- Lining And Supports For Tunnels (AREA)
Abstract
The application discloses a full-measuring line automatic scanning device and method for quality detection of a tunnel secondary lining, comprising an arc-shaped mounting frame, wherein the whole structure of the arc-shaped mounting frame is arc-shaped and is mounted in a manner of being attached to an arc-shaped outline of a tunnel; the moving mechanism is arranged in the arc-shaped mounting frame and can move along the arc-shaped mounting frame; a first rail mounted on the moving mechanism and arranged along the axial direction of the tunnel; an automatic scanning mechanism movable along the rail; and the antenna clamping device is arranged on the automatic scanning mechanism and is used for clamping an antenna.
Description
Technical Field
The application relates to a full-measuring line automatic scanning device and a full-measuring line automatic scanning method for detecting the quality of a tunnel secondary lining, and particularly belongs to the field of radar detection of the quality of the tunnel secondary lining.
Background
In the period of the vigorous development of infrastructure in China, many tunnels are still under construction and not under construction. The secondary lining of the tunnel plays roles of beautifying, supporting surrounding rock, stress storage of supporting structures and the like in the tunnel, and the construction quality of the secondary lining is one of key factors influencing the overall construction quality and the beauty of the tunnel. In the secondary lining construction process, due to various reasons such as construction technology, the secondary lining often has the conditions of hollowness, primary lining and secondary lining void and the like, and certain influence is brought to a tunnel supporting system and later operation. Therefore, the construction quality of the second lining of the tunnel needs to be detected in time after the second lining is constructed, and the defect appearing in the second lining of the tunnel is treated, so that the safe operation of the tunnel is ensured.
At present, geological radar is mainly adopted in engineering to scan and detect the quality of the two lining of the tunnel. The basic principle is as follows: the radar antenna is tightly attached to the two lining walls, the radar antenna transmits and receives electromagnetic wave signals, the electromagnetic wave signals are transmitted to the host, and whether the two lining of the tunnel has defects or not is analyzed by analyzing the electromagnetic wave signals. When the quality of the second lining of the tunnel is detected, as the heights of the vault and the vault shoulder are higher, a three-arm rock drilling trolley or a forklift is often adopted to lift an operator to perform second lining scanning, and the operator needs to manually erect an antenna to be closely attached to the wall of the tunnel; the inventors consider that this mode of operation has the following disadvantages:
1. the arch crown and the arch shoulder are higher, the three-arm rock drill trolley or the forklift is not professional equipment, the protective measures are poor, and the personal safety of operators can not be ensured;
2. the second-line scanning time is longer, the manual antenna holding is laborious, the close-fitting effect between the second-line scanning time and the hole wall cannot be ensured, and the signal receiving is affected;
3, the second liner scanning distance is longer, an operator cannot ensure that the measuring line is straight, vertical offset is easy to occur, and the final detection result is influenced;
4. quality detection can only be carried out along the axial direction of the tunnel, and annular two-lining detection cannot be carried out;
5. the road is occupied in the detection process, and normal construction and traffic of the tunnel are affected.
Disclosure of Invention
The application aims to overcome the defects and the shortcomings of the prior art, and provides a tunnel secondary lining quality detection full-test line automatic scanning device and a detection method based on an arc-shaped mounting frame; the detection quality can be improved, the personnel safety is ensured, and the detection efficiency is improved.
The application provides a full-line automatic scanning device for detecting the quality of a tunnel second liner, which adopts the following technical scheme:
the full-measuring line automatic scanning device for the quality detection of the second lining of the tunnel comprises an arc-shaped mounting frame, a moving mechanism, a first track, an automatic scanning mechanism and an antenna clamping device;
the arc-shaped mounting frame is arc-shaped in overall structure and is mounted by fitting with the arc-shaped outline of the tunnel;
the moving mechanism is arranged in the arc-shaped mounting frame and can move along the arc-shaped direction of the arc-shaped mounting frame, and the moving mechanism is mainly used for realizing detection in the arch-shaped direction of the tunnel;
a first rail mounted on the moving mechanism and arranged along the tunnel axis direction and consistent with the tunnel axis direction;
the automatic scanning mechanism is arranged on the first track and can move along the first track, namely detection in the axial direction of the tunnel is realized;
and the antenna clamping device is arranged on the automatic scanning mechanism and is used for clamping an antenna.
The automatic scanning mechanism can perform annular scanning along the arch direction of the inner wall of the tunnel under the drive of the moving mechanism, and can realize a uniform scanning function along the axial direction of the tunnel along the track; the axial survey line scanning method comprises the following steps: starting a moving mechanism, braking after moving to the height of the target measuring line position along the arc-shaped mounting frame, ensuring that the guide rail does not move in a circumferential direction, starting an automatic scanning mechanism to reach the end point of the target measuring line, and then performing axial scanning operation along the first track at a uniform speed; the circumferential line scanning method comprises the following steps: and starting the automatic scanning mechanism to move to the position of the target measuring line along the parallel guide rail, braking, ensuring that the automatic scanning mechanism cannot axially move, starting the moving mechanism to reach the end point of the target measuring line, and then performing circular scanning operation along the uniform motion of the arc-shaped mounting frame.
The second application aims to provide a detection method of an automatic full-line scanning device based on tunnel secondary lining quality detection, and in order to achieve the second application, the application adopts the following technical scheme:
according to the arch structure of the tunnel inner wall, an arc-shaped mounting frame is embedded on the tunnel wall at certain intervals, and two moving mechanisms are arranged in each arc-shaped mounting frame; the two moving mechanisms are arranged up and down;
respectively installing two first tracks on the two moving mechanisms, wherein the axes of the first tracks are parallel to the axial direction of the tunnel to form parallel tracks, installing an automatic scanning mechanism on the parallel tracks, and installing an antenna on the antenna clamping device;
the first rail positioned above is connected with all the moving mechanisms positioned above, and the first rail positioned below is connected with all the moving mechanisms positioned below;
the axial survey line scanning method comprises the following steps: starting a moving mechanism, braking after moving to the height of the target measuring line position along the arc-shaped mounting frame, ensuring that the guide rail does not move in a circumferential direction, starting an automatic scanning mechanism to reach the end point of the target measuring line, and then performing axial scanning operation along the first track at a uniform speed;
the circumferential line scanning method comprises the following steps: starting an automatic scanning mechanism to move to a target line position along a parallel guide rail, braking to ensure that the automatic scanning mechanism cannot axially move, starting a moving mechanism to reach the end point of the target line, and then performing circular scanning operation along the uniform motion of an arc-shaped mounting frame;
if the scanning work of a plurality of measuring lines is needed, the steps are only needed to be mechanically repeated according to the azimuth of the measuring lines;
and after the scanning operation is completed, the antenna is taken down, and the moving mechanism and the automatic scanning mechanism are braked.
The beneficial effects of the application are as follows:
(1) The application provides a full-line automatic scanning auxiliary device for the quality detection of the secondary lining of the tunnel, and the installation of the arc-shaped installation frame and the track realizes the convenient, quick and accurate scanning of the radar during the quality detection of the secondary lining of the tunnel, saves a great amount of manpower consumption, improves the working efficiency and saves the cost.
(2) The device is directly inlaid on the inner wall of the tunnel, has small volume, avoids occupation of the tunnel space during scanning operation, and does not influence normal construction of the tunnel.
(3) The device has low cost, good effect and easy operation. And the construction precision and the construction safety are improved automatically.
Drawings
In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described, and it is obvious that the drawings in the following description are some embodiments of the present application, and other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
FIGS. 1, 2 and 3 are cross-sectional, longitudinal and cross-sectional views of an arcuate mounting bracket of the apparatus of the present application;
fig. 4 is a schematic front view of the moving mechanism of the device of the present application.
FIG. 5 is a schematic view of the movement mechanism of the device of the present application.
FIG. 6 is a cross-sectional view of the device of the present application after the movement mechanism is mounted in the front wall arc slot.
Fig. 7 and 8 are a cross-sectional view and a left side view of the automatic scanning mechanism of the apparatus of the present application.
Fig. 9, 10 and 11 are sectional views, right side views and cross-sectional views of a hobbing slide rail of the device of the present application.
Fig. 12 and 13 are front and side views of a gear hobbing wheel of the automatic scanning mechanism of the apparatus of the present application.
Fig. 14 is a schematic view of an antenna clamping device of the present application.
Fig. 15 is a schematic view of the operation of the device of the present application on the wall of a tunnel.
The mutual spacing or dimensions are exaggerated for the purpose of showing the positions of the various parts, and the schematic illustrations are used for illustration only. Wherein: the device comprises a sliding chute 1, a wear-resistant gasket 2, a hobbing sliding rail 3, an arc-shaped mounting frame 4, a movable trolley 5, a notch welding plate 6, a hobbing wheel shaft 7, a hobbing wheel shaft channel 8, a hobbing wheel 9, a movable trolley frame 10, a pressure spring sliding plate 11, a movable mechanism pressure spring 12, a pressure spring welding point 13, a hobbing sliding rail 14, an antenna clamping device 15, an automatic scanning mechanism roller gear 16, a wheel shaft limiting ring 17, an automatic scanning mechanism hobbing wheel shaft 18, an antenna pressure spring 19, an automatic scanning mechanism 20, a hobbing sliding rail welding plate 21, a hobbing sliding rail hobbing, an antenna pressure spring welding point 23, an antenna pressure plate 24, an antenna pressure plate pressure spring 25 and a tunnel wall 26.
Detailed Description
It should be noted that the following detailed description is illustrative and is intended to provide further explanation of the application. Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs.
It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of exemplary embodiments according to the present application. As used herein, the singular is also intended to include the plural unless the context clearly indicates otherwise, and furthermore, it is to be understood that the terms "comprises" and/or "comprising" when used in this specification are taken to specify the presence of stated features, steps, operations, devices, components, and/or combinations thereof.
As described in the background section, currently, geological radar is mainly used in engineering to scan and detect the quality of the tunnel secondary lining. The basic principle is as follows: the radar antenna is tightly attached to the two lining walls, the radar antenna transmits and receives electromagnetic wave signals, the electromagnetic wave signals are transmitted to the host, and whether the two lining of the tunnel has defects or not is analyzed by analyzing the electromagnetic wave signals. When the quality of the second lining of the tunnel is detected, as the heights of the vault and the vault shoulder are higher, a three-arm rock drilling trolley or a forklift is often adopted to lift an operator to perform second lining scanning, and the operator needs to manually erect an antenna to be closely attached to the wall of the tunnel; this mode of operation has the following disadvantages: 1. the arch crown and the arch shoulder are higher, the three-arm rock drill trolley or the forklift is not professional equipment, the protective measures are poor, and the personal safety of operators can not be ensured; 2. the second-line scanning time is longer, the manual antenna holding is laborious, the close-fitting effect between the second-line scanning time and the hole wall cannot be ensured, and the signal receiving is affected; 3, the second liner scanning distance is longer, an operator cannot ensure that the measuring line is straight, vertical offset is easy to occur, and the final detection result is influenced; 4. quality detection can only be carried out along the axial direction of the tunnel, and annular two-lining detection cannot be carried out; 5. the road is occupied in the detection process, and normal construction and traffic of the tunnel are affected.
In order to solve the problems, the application discloses a full-line automatic scanning device for detecting the quality of a second lining in a tunnel, which comprises an arc-shaped mounting frame, a moving mechanism, a first track, an automatic scanning mechanism and an antenna clamping device;
the arc-shaped mounting frame is arc-shaped in overall structure and is mounted by being attached to the arc-shaped outline of the tunnel; specifically, the arc-shaped mounting frame comprises a groove-shaped body, wherein two sliding grooves which are parallel to each other are formed in the upper top surface of the inner side of the body, two second rails which are parallel to each other are arranged on the lower top surface of the inner side of the body, and the second rails are parallel to the sliding grooves.
The moving mechanism is arranged in the arc-shaped mounting frame and can move along the arc-shaped mounting frame; the moving mechanism comprises a frame and a driving device, two parallel connecting shafts are arranged on the frame, and two rollers are respectively arranged at two ends of each connecting shaft; the driving device drives the roller to rotate; two sliding plates parallel to the movement direction of the roller wheels are arranged above the frame, each sliding plate is connected with the connecting shaft through an elastic device, and the axis of the elastic device is perpendicular to the axis of the sliding plate and the axis of the connecting shaft; the elastic device of the moving mechanism can provide pressure with proper magnitude so that the roller of the moving mechanism is always pressed on the second roller of the arc-shaped mounting frame. The roller is matched with the second track, and moves along the second track; the sliding plate slides along the sliding groove.
The first track is arranged on the moving mechanism and is arranged along the axial direction of the tunnel;
the automatic scanning mechanism can move along the track; the automatic scanning mechanism comprises a frame and a driving device, wherein two parallel connecting shafts are arranged on the frame, and two rollers are respectively arranged at two ends of each connecting shaft; the driving device drives the roller to rotate, and the roller can move along the first track under the driving of the driving device. As a further technical scheme, the connecting shaft and the frame are limited by the limiting ring, so that the gear wheel shaft of the automatic scanning mechanism can be limited to rotate at a fixed position without left and right offset.
And the antenna clamping device is arranged on the automatic scanning mechanism and is used for clamping an antenna. Further, the antenna clamping device is arranged on the frame through an elastic device; the antenna clamping device comprises a groove-shaped mounting frame, a pressing plate is arranged on the side wall of the groove-shaped mounting frame, the pressing plate is connected with the side wall of the groove-shaped mounting frame through an elastic device, and the main purpose of the design is to compress the antenna and prevent the antenna from falling off in the detection process.
The automatic scanning mechanism can perform annular scanning along the arch direction of the inner wall of the tunnel under the drive of the moving mechanism, and can realize a uniform scanning function along the axial direction of the tunnel along the track.
As a further technical scheme, the arc-shaped mounting frames are arranged in a plurality, and the arc-shaped mounting frames are sequentially arranged at intervals along the axis direction of the tunnel. The arc-shaped mounting frame can be continuously paved forwards according to the length of the second lining construction of the tunnel, and the track is welded on the arc-shaped mounting frame, so that the quality detection of the second lining is timely followed.
As a further technical scheme, two moving mechanisms are arranged on each arc-shaped mounting frame, and the two moving mechanisms are arranged up and down. The first rails are also arranged in two and are arranged up and down; the first rail located above is connected with all moving mechanisms located above, and the first rail located below is connected with all moving mechanisms located below.
Specifically, the structures of the first rail, the second rail and the roller in the present application may take various forms, which are not limited in the present application; in this embodiment, the gear hobbing and the gear hobbing slide rail are adopted, and the following description is specifically presented in the accompanying drawings.
The moving mechanism and the automatic scanning mechanism can take various existing forms, and are not limited in the application; in the embodiment, the moving mechanism adopts a structural form of a moving trolley; the automatic scanning mechanism also adopts the structural form of a scanning trolley.
The following describes the technical scheme of the present application in detail by taking the structure shown in the drawings as an example.
Example 1:
as shown in fig. 1 to 14, the automatic scanning device for the full-measuring line based on the quality detection of the tunnel secondary lining of the arc-shaped mounting frame disclosed in the embodiment comprises an arc-shaped mounting frame 4, a movable trolley 5, a hobbing sliding rail 14, an antenna clamping device 15 and an automatic scanning trolley 20.
Specifically, as shown in fig. 1, 2 and 3, the arc-shaped mounting frame 4 comprises a groove-shaped arc-shaped body structure, the outer contour of the body is the same as the arch shape of the tunnel, further, two mutually parallel compression spring sliding grooves 1 are arranged on the upper top surface of the inner side of the body, two mutually parallel hobbing sliding rails 3 are arranged on the lower top surface of the inner side of the body, and the hobbing sliding rails 3 are mutually parallel to the sliding grooves 1; the overall shape of the hobbing slide rail 3 and the slide groove 1 is consistent with that of the mounting frame, and the shape of the hobbing slide rail is also in an arch shape and is relatively close to that of the mounting frame; mainly provides a moving track for the movement of the moving trolley 5;
further, an anti-abrasion gasket 2 is further arranged in a gap formed between the body and the hobbing sliding rail 3, and the anti-abrasion gasket 2 is mainly used for preventing the rolling gear from rubbing the body in the moving process. In particular, the wear pad 2 may be made of rubber material, asbestos-free fiber rubber, polytetrafluoroethylene, and other types of non-metallic materials, without limitation.
The hobbing slide rail 3 is a slide rail provided with hobbing, and the hobbing is arranged on a common slide rail. Fig. 9, 10 and 11 are sectional views, right side views and cross sectional views of the hobbing slide rail of the device of the present application; because the gear wheel is matched with the gear-hobbing sliding rail, the structure of the gear-hobbing sliding rail is relatively close to that of the rack.
As shown in fig. 4 and 5, the travelling car 5 is composed of a notch welding plate 6, a gear wheel shaft 7, a gear wheel shaft channel 8, a gear wheel 9, a travelling car frame 10 and a driving device; the gear hobbing 9 is fixedly connected through a gear hobbing shaft 7, and the gear hobbing shaft 7 passes through the gear hobbing shaft channel 8, can freely rotate and is welded on the movable trolley frame 10 to form the front surface of the movable trolley 5. The pressure spring sliding plate 11 is welded with the gear wheel shaft channel 8 through the pressure spring 12 of the movable trolley to form the back surface of the movable trolley 5. The travelling car 5 install in arc mounting bracket 4, the gear hobbing slide rail 3 and the gear hobbing 9 of arc mounting bracket closely mesh.
Further, the driving device drives the roller gear 9 to rotate by driving the roller gear shaft 7, so that the purpose of moving the trolley is achieved; further, since the driving of the trolley by the driving means is a prior art, details are not given in the present embodiment; the drive means typically selects an existing motor drive.
Further, the gear wheel shaft 7 passes through the gear wheel shaft channel 8 and can rotate freely, the diameter of the channel is slightly larger than that of the wheel shaft, and the wheel shaft can be ensured not to deviate from axial displacement. The gear wheel shaft channel 8 is formed by a hollow tubular structure which provides a channel for the gear wheel shaft 7 and mainly serves to support the gear wheel shaft 7, which is fixed to the travelling trolley frame 10.
Further, the hobbing slide rail welding plate 21 of the hobbing slide rail 14 is welded with the notch welding plate 6 on the movable trolley 5, and a parallel guide rail system clung to the wall of the hole is formed after the welding;
the installation form of the movable trolley 5 on the arc-shaped installation frame is shown in fig. 5, the movable trolley frame 10 of the movable trolley 5 faces away from the side wall of the tunnel, and the trolley iron plate frame 10 faces to the outer side of the side wall of the tunnel.
The shape of the gear hobbing 9 is basically the same as that of the existing gear, except that the gear hobbing is thicker than the conventional gear, and the roller structure is formed, and the specific shape can be referred to as 12 and 13, and the front view and the side view of the gear hobbing are shown in 12 and 13; the gear wheel shaft 7 is a common connecting shaft for connecting the gear wheels, and is defined as a gear wheel shaft 7;
as shown in fig. 7 and 8, the automatic scanning trolley 20 consists of a gear hobbing slide rail 14, a gear hobbing 16, a wheel axle limiting ring 17, a gear hobbing wheel axle 18 of the automatic scanning trolley and a driving device; the automatic scanning trolley 20 is arranged on the gear hobbing slide rail 14, the automatic scanning trolley gear hobbing 16 is tightly meshed with the gear hobbing slide rail gear hobbing 22, the antenna clamping device 15 is welded with the automatic scanning trolley 20 through an antenna pressure spring 19, and two ends of the automatic scanning trolley gear hobbing shaft 18 are fixedly connected with the automatic scanning trolley gear hobbing 16.
The driving device drives the roller 16 to rotate by driving the roller shaft, so as to achieve the purpose of moving the automatic scanning trolley 20. Further, since it is a prior art that the driving means drives the cart to move, details are not given in the present embodiment.
Further, the hobbing slide rail 14 is mounted on the notch welding plate 6 to provide a track for the movement of the automatic scanning carriage 20; preferably, two hobbing slide rails 14 are arranged and are installed up and down; two rolling gears 16 are correspondingly arranged, and the two rolling gears 16 are connected through a rolling gear shaft of the automatic scanning mechanism; the automatic scanning mechanism gear wheel shaft is radially limited through the wheel shaft limiting ring 17, so that radial movement of the automatic scanning mechanism gear wheel shaft is prevented.
The automatic scanning trolley 20 can realize a uniform-speed ring tunnel inner wall scanning function under the driving of the moving trolley, and can realize a uniform-speed scanning function along the tunnel axial direction under the driving of the automatic scanning trolley rolling gear.
The gear hobbing slide rail 14 is a slide rail provided with gear hobbing, namely, the gear hobbing is arranged on a common slide rail; the roller gear 16 is substantially the same shape as existing gears, except that it is thicker than conventional gear designs, resulting in a roller structure. As shown in fig. 9, 10 and 11, the gear hobbing slide rail of the device of the application is a sectional view, a right side view and a cross-sectional view; because the gear wheel is matched with the gear-hobbing sliding rail, the structure of the gear-hobbing sliding rail is relatively close to that of the rack. A welding plate 21 is also arranged on the side surface of the hobbing slide rail. As shown in fig. 12 and 13, a front view and a side view of the gear hobbing machine are shown. The gear hobbing slide rail and the gear hobbing wheel are manufactured by using a lathe in a punching mode, the gear hobbing strength is high, the precision is high, and the gear hobbing slide rail and the gear hobbing wheel can be tightly meshed with the gear hobbing wheel.
As shown in fig. 14, the antenna clamping device 15 is composed of a slot-type mounting frame, an antenna compression spring 19, an antenna compression spring welding point 23, an antenna compression plate 24 and an antenna compression plate compression spring 25. The antenna pressing plate 24 is welded with the antenna clamping device 15 through an antenna pressing plate pressure spring 25. The antenna pressure spring 19 is welded on the antenna pressure spring welding point 23.
Further, the antenna clamping device 15 has a groove structure, and the antenna pressing plate compression spring 25 is arranged on the side wall of the groove structure and can be provided with a plurality of antenna pressing plates; the plurality of antenna pressing plate pressure springs 25 are connected with the antenna pressing plate 24, and the antenna pressing plate 24 is parallel to the side wall; it will be appreciated that in this or other embodiments, two or one antenna platen 24 may be provided; preferably, two antenna pressing plates 24 are arranged on the inner sides of the two side walls of the groove structure respectively; each antenna platen 24 is connected to the side walls of the channel structure by a plurality of antenna platen compression springs 25.
Further, the inner dimension of the antenna clamping device is larger than the dimension of the antenna, and the antenna can be fixed through the antenna pressing plate.
Further, the antenna compression spring 19 may press the antenna clamping device to be closely attached to the inner wall of the tunnel, and the structure of the antenna compression spring 19 may be a common spring structure, and similarly, the structure of the antenna compression spring 25 may also be a common spring structure. It will be appreciated that the number of antenna compression springs 19 in this or other embodiments may be plural; the plurality of antenna pressure springs 19 are arranged in parallel with each other, and the plurality of antenna pressure springs 19 are arranged at the top of the groove-shaped structure and are connected with the automatic scanning trolley 20.
The antenna holding device is mounted on the auto-scanning carriage 20 in such a manner as to face the tunnel side wall as shown in fig. 7 and 15.
Fig. 15 is a schematic diagram of the automatic scanning carriage 20 performing the scanning operation by closely adhering to the tunnel wall 26, wherein a plurality of arc-shaped mounting frames are provided, and a plurality of arc-shaped mounting frames are sequentially and alternately arranged along the tunnel axis direction. The arc-shaped mounting frame can be continuously paved forwards according to the length of the second lining construction of the tunnel, and the track is welded on the arc-shaped mounting frame, so that the quality detection of the second lining is timely followed.
Two travelling carts are arranged on each arc-shaped mounting frame, and the two travelling carts are arranged up and down. The number of the rails is two, and the rails are arranged up and down; the track that is located the top connects all travelling carts that are located the top, and the track that is located the below connects all travelling carts that are located the below.
Example 2
The method for detecting by using the tunnel two-liner quality detection full-line automatic scanning device described in the embodiment 1 is as follows:
A. according to the shape of the tunnel wall 26, arc-shaped mounting frames 4 are embedded on the tunnel wall at intervals in the axial direction of the tunnel, and the movable trolley 5 is mounted in the arc-shaped mounting frames 4; two mobile trolleys are arranged in each arc-shaped mounting frame; the two mobile trolleys are arranged up and down;
further, the arc-shaped mounting frame 4 may be mounted on the side wall of the tunnel by punching holes in the side wall and then fixed on the side wall of the tunnel by screws, bolts, etc.
Further, the number of the arc-shaped mounting frames 4 is selected according to the length of the tunnel, and in principle, the longer the tunnel is, the more the number of the mounting frames is.
Further, the arc-shaped mounting frames 4 may be uniformly arranged or unevenly arranged in the tunnel axis direction.
B. The hobbing slide rail 14 is welded to the notch welding plate 6 of the mobile trolley to form a parallel guide rail, the automatic scanning trolley 20 is mounted on the parallel guide rail, and the antenna is mounted on the antenna clamping device 15;
specifically, the gear hobbing slide rail 14 includes two gear hobbing slide rails 14 positioned above are connected to all the moving trolleys positioned above, and the gear hobbing slide rail 14 positioned below is connected to all the moving trolleys positioned below; such that the two hobbing slide rails 14 provide a track of movement for the auto-scanning carriage 20;
in addition, the hobbing slide rail 14 may also be fixed to the slot welding plate 6 by a connecting member, not limited to the welding form.
C. The axial survey line scanning method comprises the following steps: starting the moving trolley 5, braking after moving to the height of the target measuring line position along the arc-shaped mounting frame 4, ensuring that the guide rail cannot move in a circumferential direction, starting the automatic scanning trolley 20 to reach the end point of the target measuring line, and then performing axial scanning operation along the guide rail at a uniform speed;
D. the circumferential line scanning method comprises the following steps: starting the automatic scanning trolley 20 to move to a target measuring line position along the parallel guide rail and then braking to ensure that the automatic scanning trolley 20 cannot axially move, starting the moving trolley 5 to reach the end point of the target measuring line, and then performing circular scanning operation along the arc-shaped mounting frame 4 at a uniform speed;
E. if the scanning work of a plurality of measuring lines is needed, the step C, D is only needed to be mechanically repeated according to the azimuth of the measuring lines;
F. after the scanning operation is completed, the antenna is removed, and the traveling carriage 5 and the automatic scanning carriage 20 are braked.
From the above description, it can be seen that the above embodiments of the present application achieve the following technical effects:
(1) The application provides a full-line automatic scanning auxiliary device for the quality detection of the secondary lining of the tunnel, and the convenient, quick and accurate scanning of the radar during the quality detection of the secondary lining of the tunnel is realized through the installation of the ground embedded arc groove and the hobbing sliding rail, so that a large amount of manpower consumption is saved, the working efficiency is improved and the cost is saved.
(2) The device is directly inlaid on the inner wall of the tunnel, has small volume, avoids occupation of the tunnel space during scanning operation, and does not influence normal construction of the tunnel.
(3) The device has low cost, good effect and easy operation. And the construction precision and the construction safety are improved automatically.
While the foregoing description of the embodiments of the present application has been presented in conjunction with the drawings, it should be understood that it is not intended to limit the scope of the application, but rather, it is intended to cover all modifications or variations within the scope of the application as defined by the claims of the present application.
Claims (8)
1. The utility model provides a tunnel two lining quality testing survey line automatic scanning device which characterized in that includes
The arc-shaped mounting frame is arc-shaped in overall structure and is mounted by fitting with the arc-shaped outline of the tunnel;
the moving mechanism is arranged in the arc-shaped mounting frame and can move along the arc-shaped mounting frame;
a first rail mounted on the moving mechanism and arranged along the axial direction of the tunnel;
an automatic scanning mechanism movable along the rail;
an antenna clamping device which is arranged on the automatic scanning mechanism and is used for clamping an antenna;
the method for detecting the tunnel secondary lining quality detection full-line automatic scanning device comprises the following steps:
according to the arch structure of the tunnel inner wall, an arc-shaped mounting frame is embedded on the tunnel wall at certain intervals, and two moving mechanisms are arranged in each arc-shaped mounting frame; the two moving mechanisms are arranged up and down;
the two first rails are respectively arranged on the moving mechanisms, the first rail positioned above is connected with all the moving mechanisms positioned above, and the first rail positioned below is connected with all the moving mechanisms positioned below; the axis of the first track is parallel to the axial direction of the tunnel to form parallel tracks, an automatic scanning mechanism is mounted on the parallel tracks, and an antenna is mounted on the antenna clamping device;
the axial survey line scanning method comprises the following steps: starting a moving mechanism, braking after moving to the height of the target measuring line position along an arc-shaped mounting frame, ensuring that the automatic scanning mechanism does not move in a circumferential direction, starting the automatic scanning mechanism to reach the end point of the target measuring line, and then performing axial scanning operation along a first track at a uniform speed;
the circumferential line scanning method comprises the following steps: starting an automatic scanning mechanism to move to a target line position along a first track in parallel, braking to ensure that the automatic scanning mechanism cannot axially move, starting a moving mechanism to reach the end point of the target line, and then performing circular scanning operation along the uniform motion of an arc-shaped mounting frame;
if the scanning work of a plurality of measuring lines is needed, the steps are only needed to be mechanically repeated according to the azimuth of the measuring lines; and after the scanning operation is completed, the antenna is taken down, and the moving mechanism and the automatic scanning mechanism are braked.
2. The automatic scanning device for the full-measuring line for the quality detection of the tunnel secondary lining according to claim 1, wherein the arc-shaped mounting frame comprises a groove-shaped body, wherein two mutually parallel sliding grooves are formed in the upper top surface of the inner side of the body, two mutually parallel second tracks are formed in the lower top surface of the inner side of the body, and the second tracks are mutually parallel to the sliding grooves.
3. The automatic scanning device for the full-measuring line for the quality detection of the tunnel secondary lining according to claim 1, wherein the moving mechanism comprises a frame and a driving device, two connecting shafts which are arranged in parallel are arranged on the frame, and two rollers are respectively arranged at two ends of each connecting shaft; the driving device drives the roller to rotate; two sliding plates parallel to the movement direction of the roller wheels are arranged above the frame, each sliding plate is connected with the connecting shaft through an elastic device, and the axis of the elastic device is perpendicular to the axis of the sliding plate and the axis of the connecting shaft.
4. The automatic scanning device for the full-measuring line for the quality detection of the tunnel secondary lining according to claim 1, wherein the automatic scanning mechanism comprises a frame and a driving device, two connecting shafts which are arranged in parallel are arranged on the frame, and two rollers are respectively arranged at two ends of each connecting shaft; the driving device drives the roller to rotate, and the roller can move along the first track under the driving of the driving device.
5. The automatic scanning device for detecting the quality of the tunnel secondary lining according to claim 3, wherein the connecting shaft and the frame are limited by a limiting ring.
6. A tunnel two-liner quality inspection full-line automatic scanning device as claimed in claim 3, wherein said antenna clamping device is mounted on said carriage by elastic means.
7. The automatic scanning device for the full-measuring line for the quality detection of the tunnel secondary lining according to claim 1, wherein the antenna clamping device comprises a groove-shaped mounting frame, a pressing plate is arranged on the side wall of the groove-shaped mounting frame, and the pressing plate is connected with the side wall of the groove-shaped mounting frame through an elastic device.
8. The automatic scanning device for detecting the quality of a two-lining tunnel according to claim 1, wherein a plurality of arc-shaped mounting frames are arranged, and the arc-shaped mounting frames are sequentially arranged at intervals along the axis direction of the tunnel.
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| DE4445464A1 (en) * | 1993-12-28 | 1995-07-06 | Amberg Messtechnik Ag | Scanning apparatus for determining spatial co-ordinates |
| CN106199597A (en) * | 2016-08-16 | 2016-12-07 | 上海交通大学 | Automatically machinery and the detection method of shield tunnel liner construction quality are detected |
| CN107084996A (en) * | 2017-06-15 | 2017-08-22 | 山东大学 | A kind of tunnel double-lining quality detections of radar multifunctional assisting device and its application method |
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