CN219737299U

CN219737299U - Tunnel structure detection device

Info

Publication number: CN219737299U
Application number: CN202320597622.1U
Authority: CN
Inventors: 杨海波; 孙健; 彭庆淳; 李志强; 杨麟峰
Original assignee: Mcc Wukan Engineering Consulting Hubei Co ltd; MCC Wukan Engineering Technology Co Ltd
Current assignee: Mcc Wukan Engineering Consulting Hubei Co ltd; MCC Wukan Engineering Technology Co Ltd
Priority date: 2023-03-21
Filing date: 2023-03-21
Publication date: 2023-09-22
Anticipated expiration: 2033-03-21

Abstract

The utility model provides a tunnel structure detection device. The detection device comprises a walking base, an arc-shaped mounting frame, a rough adjusting mechanism and a plurality of groups of detection assemblies distributed along the arc surface of the arc-shaped mounting frame, wherein each group of detection assemblies comprises a fixed base and a detection mechanism, and a connecting loop bar is arranged at the bottom of the fixed base; the coarse adjustment mechanism comprises a coarse adjustment motor, a first transmission rod and a plurality of second transmission rods, and each group of detection assemblies is connected with an adjusting screw on the corresponding transmission rod through a connecting sleeve rod at the bottom of the fixed base; the first transmission rod is connected to the output shaft of the coarse adjustment motor, and the coarse adjustment motor controls the adjustment of the multiple groups of detection assemblies through the driving gear on the first transmission rod and the linkage gear of each second transmission rod. The utility model solves the problems that the detection mode is simpler, the result is not strict and accurate enough on one side, and the position of the detector of the device is inconvenient to adjust according to the need during detection by arranging a plurality of groups of detection components.

Description

Tunnel structure detection device

Technical Field

The utility model relates to the technical field of tunnel structure detection, in particular to a tunnel structure detection device.

Background

Along with the high-speed development of the economic level of China, the paving path of the high-speed rail and the subway in China is longer and longer, and tunnels, particularly subways, are required to be frequently opened in the paving process of the high-speed rail and the subway, and the tunnel is basically in the whole process, so that the structural safety of the tunnel is important, and the life safety of people is concerned; in the using process of the subway tunnel, section deformation and apparent diseases including lining cracking, corrosion peeling, seam misplacement cracking, water leakage and the like are unavoidable disease phenomena, and the safety of the tunnel is irreversibly and negatively influenced along with the long-term development of the diseases, in particular to subway engineering in soft soil geological environment; therefore, maintenance of the tunnel structure in subway operation is regarded as a necessary means for guaranteeing the long-term operation safety of the tunnel, and detection of tunnel defects is a basis for development of tunnel maintenance decision and technical means; and the mileage of high-speed rail and subway in China is longer, so that manpower and material resources are very consumed in detection.

Chinese patent publication No. CN109184797B relates to a tunnel structure detecting device, which includes a U-shaped trolley track and a detecting trolley; the trolley track is axially arranged along the top of the tunnel; the detection trolley comprises a vehicle body, a geological radar, a damping device, a storage battery and an electronic controller, wherein the electronic controller is arranged at the front part of the vehicle body; the device comprises wheels arranged on two sides below a vehicle body, wherein two sides of a detection trolley are connected with a wheel groove and a pressing wheel through a telescopic rod, and springs are sleeved on the telescopic rods; the damping devices are arranged at the front part and the rear part of the vehicle body and are higher than the geological radar; through setting up the dolly track at the vault of tunnel, enable to detect the dolly and carry out the full automatization to the structure of tunnel in the track to installation primary device can carry out a lot of and detect, reduces the manual work of later stage detection and mobilize equipment cost.

Chinese patent publication No. CN108918539B discloses a device and method for detecting apparent diseases of tunnel structure. The detection device includes: the system comprises a camera set, a light source, an ambient light sensor, a range finder and a main control computer; the output end of the ambient light sensor is connected with the main control computer, and the ambient light sensor is used for detecting the brightness of light in the environment and transmitting the obtained brightness data of the light to the main control computer; the output end of the range finder is connected with the main control machine, and the range finder is used for measuring the distance between the detection device and the tunnel surface and transmitting the obtained distance data to the main control machine; the main control machine is connected with the control end of the light source and is used for adjusting parameters of the light source according to the brightness data and the distance data of the light; the output end of the camera set is connected with the main control machine, the camera set is used for shooting an apparent image of the tunnel structure, and the main control machine is also used for analyzing the image data to obtain an apparent defect detection result of the tunnel structure. By adopting the detection device or the detection method, the disease detection efficiency can be improved, and the detection effect can be improved.

Chinese patent grant publication No. CN105423940B relates to a subway tunnel structure section deformation rapid detection device, including: the rail travelling mechanism is arranged on the subway rail, and the acquisition center is arranged on the rail travelling mechanism; the track running mechanism is a T-shaped running platform and comprises a transverse shaft, a longitudinal shaft and a stand column, wherein the transverse shaft is connected with the longitudinal shaft to form the T-shaped platform, tread wheels are arranged at the bottom of the T-shaped platform, one end of the stand column is vertically connected with the transverse shaft, the other end of the stand column is used for setting an operation platform of an acquisition center, the acquisition center comprises a lattice laser structure light source, an industrial fixed focus camera and a computer, and the computer is connected with the industrial fixed focus camera. Compared with the prior art, the method can effectively solve the problems that the detection data are unstable due to the fact that the section deformation detection result data are mutually referred and the movement.

The prior art scheme has the following defects: the detection mode is simple, the result is not strict and accurate enough on one side, and the position of the detector of the device is inconvenient to adjust according to the needs during detection.

Disclosure of Invention

The utility model aims to provide a tunnel structure detection method and a tunnel structure detection device, which are used for solving the problems that the detection mode proposed in the background technology is simpler, the result is not strict enough and accurate on one side, and the position of a detector of the device is inconvenient to adjust according to the requirement during detection.

In order to achieve the above purpose, the utility model provides a tunnel structure detection device, which comprises a walking base, an arc-shaped mounting frame, a rough adjusting mechanism and a plurality of groups of detection components, wherein the arc-shaped mounting frame is arranged on the walking base, the arc surface of the arc-shaped mounting frame faces upwards, the plurality of groups of detection components are distributed along the arc surface of the arc-shaped mounting frame, each group of detection components comprises a fixed base and a detection mechanism arranged on the fixed base, and the bottom of the fixed base of each group of detection components is provided with a connecting loop bar; the coarse adjustment mechanism comprises a coarse adjustment motor, a first transmission rod and a plurality of second transmission rods, wherein the first transmission rod and the plurality of second transmission rods are respectively arranged at positions corresponding to each group of detection components, the coarse adjustment motor is arranged in the arc-shaped mounting frame, the first transmission rod is connected with the output end of the coarse adjustment motor, the plurality of second transmission rods are rotatably arranged on the arc-shaped mounting frame, the free end of each transmission rod is provided with an adjusting screw, and each group of detection components is respectively connected with the adjusting screw on the corresponding transmission rod through a connecting sleeve rod at the bottom of the fixed base of the detection component; the driving gear is fixedly arranged at one end, far away from the detection assembly, of the first transmission rod, the linkage gear is fixedly arranged at one end, far away from the detection assembly, of each second transmission rod, the driving gear is sequentially connected with the linkage gears in a transmission mode, and the driving gear drives the linkage gears to rotate simultaneously.

The utility model has the preferable technical scheme that: the device comprises a detection mechanism, a fixed base, a fine adjustment mechanism, a detection mechanism and a control mechanism, wherein the fine adjustment mechanism is arranged between the detection mechanism and the fixed base and comprises a fine adjustment motor, a driving gear, a driven gear, a fine adjustment transmission rod and two rotating connecting rods; the drive gear is installed at the output shaft of fine adjustment motor, and driven gear installs at the fine adjustment transfer line middle part, and driven gear and drive gear intermeshing, the screw rod region at fine adjustment transfer line both ends respectively with first connecting seat threaded connection, two rotation connecting rod one end respectively with the first connecting seat hinge at fine adjustment transfer line both ends, the other end with fix the second connecting seat hinge in detection mechanism bottom.

The utility model has the preferable technical scheme that: the detection mechanism is composed of an installation bottom plate, a fixed-focus camera and a laser scanner, wherein the installation bottom is installed on a fixed base, the fixed-focus camera and the laser scanner are both arranged on the surface, adjacent to the tunnel, of the installation bottom plate, and the laser scanner is located on the outer side of the fixed-focus camera.

The utility model has the preferable technical scheme that: the connecting sleeve rod of each group of detection assembly is externally provided with a limiting frame, the limiting frame comprises a limiting bottom plate and at least two limiting rods, a sliding groove is correspondingly formed in the outer wall of the connecting sleeve rod, the limiting bottom plate is connected with the arc-shaped mounting frame through a support, the first transmission rod and the second transmission rod respectively penetrate through each corresponding limiting bottom plate, the at least two limiting rods are arranged outside the connecting sleeve rod in a dispersing mode and are parallel to the connecting sleeve rod, one end of each limiting rod is fixed to the limiting bottom plate, the other end of each limiting rod is provided with a sliding block matched with the sliding groove, and the limiting rods are in sliding connection with the sliding groove through the sliding blocks.

The utility model has the preferable technical scheme that: the bottom surface of the walking base is provided with a walking wheel with a brake mechanism.

The utility model has the preferable technical scheme that: the first transmission rod is located the vertical middle branching of arc mounting bracket, and many second transmission rods symmetric distribution are in the both sides of first transmission rod, and the gear on every transmission rod is the conical gear, and the rotation direction of two adjacent gears is opposite, and the screw thread of adjusting screw on two adjacent transmission rods revolves to opposite.

The utility model has the preferable technical scheme that: the arc mounting frame is provided with double-deck, is equipped with the gear chamber between the double-deck support body, in coarse adjustment motor installed the inlayer support body, the second transfer line rotates to be installed on the inlayer support body, and the other end stretches out outer support body and is connected with detection component, and driving gear and a plurality of linkage gears distribute in the gear chamber.

The utility model has the preferable technical scheme that: the limit rods are four and are uniformly distributed outside the connecting sleeve rod; the limiting bottom plate is provided with a limiting sleeve at the connection part of the limiting bottom plate and the corresponding transmission rod, the inner wall of the limiting sleeve is provided with a limiting block, the first transmission rod and the second transmission rod are correspondingly provided with annular grooves, and the limiting block on the inner wall of the limiting sleeve is embedded into the annular grooves.

The utility model has the preferable technical scheme that: the first connecting seats are connected with the rotating connecting rods in a rotating mode, and the rotating connecting rods are connected with the second connecting seats in a rotating mode, and the two first connecting seats and the two rotating connecting rods are symmetrically arranged about the center line of the driven gear.

Compared with the prior art, the utility model has the beneficial effects that:

1. the utility model comprises a plurality of groups of detection units, wherein the detection units are simultaneously regulated through a set of coarse regulating mechanism, when the whole device is required to be regulated in a large range, the motor is used for driving the regulating connecting rod to rotate, so that the transmission bevel gear rotates, the meshing transmission between the transmission bevel gears is used for driving the regulating rod of each detection unit to rotate simultaneously, in the rotation process of the regulating rod, the regulating sleeve connected to each detection unit can move up and down along the regulating rod, and the position of the detection assembly can be regulated, and the distance between each detection unit and the inner wall of the tunnel is regulated, so as to meet the detection requirement.

2. Each group of detection units is provided with a fine adjustment mechanism, the fine adjustment mechanism controls the driving gear to rotate through a motor, the fine adjustment mechanism enables the fine adjustment transmission rod to rotate through meshed connection between the driving gear and the driven gear, the first connection seat is moved through threaded connection between the fine adjustment transmission rod and the first connection seat, and finally, the positions of the detection components can be finely adjusted through rotational connection between the first connection seat and the rotation connection rod and between the rotation connection rod and the second connection seat, so that the detection result is clearer, and the final detection structure is more accurate;

3. each detection unit of the utility model utilizes a fixed-focus camera and a laser scanner to accurately shoot and detect a tunnel, finally, shot images and detection data are transmitted to a central processing chip, after being processed and analyzed by the central processing chip, the shot images and the detection data are transmitted to a data display for inspection by detection personnel, meanwhile, an alarm is arranged on the data display, when a displayed result is in a problem, the alarm alarms the detection personnel to remind the detection personnel, the detection result is prevented from being in a problem due to negligence of the detection personnel, and finally, the detected data structure is recorded into a data memory for file reservation and storage.

According to the utility model, a plurality of groups of detection units are arranged, so that a plurality of positions on the same section of the tunnel can be detected simultaneously according to the distribution of the inner cambered surfaces of the tunnel, the detection mode is simpler, and the problem that the detection result of the conventional tunnel detection device is less precise and accurate on one side is solved; in addition, the utility model can adjust the position of the detector of the device according to the requirement during detection, thereby further improving the detection accuracy.

Drawings

FIG. 1 is a schematic diagram of a front cross-sectional structure of the present utility model;

FIG. 2 is an enlarged schematic view of the structure of FIG. 1A according to the present utility model;

FIG. 3 is an enlarged schematic view of the structure of FIG. 1B according to the present utility model;

FIG. 4 is a schematic top view of a limiting frame according to the present utility model;

FIG. 5 is a schematic view of a transverse cross-sectional structure of a limiting base plate according to the present utility model;

FIG. 6 is a schematic diagram of a front cross-sectional structure of a detection assembly according to the present utility model;

FIG. 7 is a schematic diagram of the overall structure of the connection of the fixed connection plate and the limit connection block;

fig. 8 is a schematic diagram of a tunnel detection flow according to the present utility model.

In the figure: 1-walking base, 101-walking wheel, 2-limit frame, 201-limit bottom plate, 202-limit rod, 203-slide block, 204-rotation limit sleeve, 3-arc-shaped mounting frame, 4-coarse adjustment motor, 5-first transmission rod, 6-driving gear, 7-second transmission rod, 8-linkage gear, 9-adjusting screw, 10-fine adjustment motor, 11-connecting sleeve rod, 12-fixed base, 14-driving gear, 15-driven gear, 16-fine adjustment transmission rod, 17-first connecting seat, 18-rotation connecting rod, 19-second connecting seat; 20-detection assembly, 2001-mounting base plate, 2002-prime camera, 2003-laser scanner, 21-chute.

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

The embodiment provides a tunnel structure detection device, as shown in fig. 1 to 7, the detection device comprises a walking base 1, an arc-shaped mounting frame 3, a rough adjusting mechanism and five groups of detection components, wherein the bottom surface of the walking base 1 is provided with a walking wheel 101 with a brake mechanism; the arc mounting frame 3 is provided with the bilayer, is equipped with the gear chamber between the double-deck support body, arc mounting frame 3 installs on walking base 1, and its arc face is upwards, and five sets of detection subassembly are distributed along the cambered surface of arc mounting frame 3, and every detection subassembly that sets up includes fixed base 12 and installs the detection mechanism 20 on fixed base 12, is equipped with at the fixed base 12 bottom of every detection subassembly that sets up and connects loop bar 11, detection mechanism 20 comprises mounting plate 2001, prime camera 2002 and laser scanner 2003, mounting plate 2001 installs on fixed base 12, prime camera 2002 and laser scanner 2003 all set up adjacent tunnel face at mounting plate 2001, and laser scanner 2003 is located the outside of prime camera 2002.

The embodiment provides a tunnel structure detection device, as shown in fig. 1 and 2, coarse adjustment mechanism includes coarse adjustment motor 4, first transfer line 5 and many second transfer lines 7 are installed respectively in the position that corresponds every group detection component, and first transfer line 5 is located the vertical middle branching of arc mounting bracket 3, and many second transfer lines 7 symmetric distribution are in the both sides of first transfer line 5. The coarse adjustment motor 4 is arranged in an inner layer frame body of the arc-shaped mounting frame 3, the first transmission rods 5 are connected with the output ends of the coarse adjustment motor 4, the plurality of second transmission rods 7 are rotatably arranged on the inner layer frame body of the arc-shaped mounting frame 3, and the other ends of the second transmission rods extend out of the outer layer frame body; the free end of each transmission rod is provided with an adjusting screw rod 9, and each group of detection components is respectively connected with the adjusting screw rod 9 on the corresponding transmission rod through a connecting sleeve rod 11 at the bottom of a fixed base 12. A driving gear 6 is fixedly arranged at one end of the first transmission rod 5 far away from the detection assembly, a linkage gear 8 is fixedly arranged at one end of each second transmission rod 7 far away from the detection assembly, the driving gear 6 and the plurality of linkage gears 8 are distributed in a gear cavity, and a conical gear is adopted, or the conical gear is combined with a common gear, or a bevel gear is adopted, so that the plurality of gears can be meshed in sequence for transmission in a self-checking manner, and the driving gear 6 drives the plurality of linkage gears 8 to rotate simultaneously; the rotation directions of the adjacent two gears are opposite, and the screw threads of the adjusting screw rods 9 on the adjacent two transmission rods are opposite.

The embodiment provides a tunnel structure detection device, as shown in fig. 1 to 7, a limiting frame 2 is arranged outside a connecting sleeve rod 11 of each group of detection components, the limiting frame comprises a limiting bottom plate 201 and four limiting rods 202, and the four limiting rods 202 are uniformly distributed outside the connecting sleeve rod 11 and are parallel to the connecting sleeve rod 11; the outer wall of the connecting sleeve rod 11 is correspondingly provided with a sliding groove 21, the limiting bottom plate 201 is connected with the arc-shaped mounting frame 3 through a bracket, the first transmission rod 5 and the second transmission rod 7 respectively penetrate through each corresponding limiting bottom plate, one end of each limiting rod 202 is fixed on the limiting bottom plate 201, and the other end of each limiting rod is provided with a sliding block 203 matched with the sliding groove 21 and is in sliding connection with the sliding groove 21 through the sliding block 203. As shown in fig. 2 and fig. 5, the connection part between the limiting bottom plate 201 and the corresponding transmission rod is provided with a limiting sleeve 204, the inner wall of the limiting sleeve 204 is provided with a limiting block 205, the first transmission rod 5 and the second transmission rod 7 are correspondingly provided with an annular groove 206, the limiting block 205 on the inner wall of the limiting sleeve 204 is embedded into the annular groove 206 and can slide in the annular groove 206, and when the transmission rod rotates, the limiting block 205 does not move in the annular groove 206 and does not influence the rotation of the transmission rod.

The embodiment provides a tunnel structure detection device, as shown in fig. 1, 3 and 6, a fine adjustment mechanism is arranged between the detection mechanism 20 and the fixed base 12, the fine adjustment mechanism comprises a fine adjustment motor 10, a driving gear 14, a driven gear 15, a fine adjustment transmission rod 16 and two rotating connecting rods 18, the fine adjustment motor 10 is arranged inside the fixed base 12, the fine adjustment transmission rod 16 is horizontally arranged between the detection mechanism 20 and the fixed base 12, screw rods are symmetrically arranged at two ends of the fine adjustment transmission rod, and first connecting seats 17 are symmetrically arranged on the screw rods at two ends of the fine adjustment transmission rod; the driving gear 14 is mounted on the output shaft of the fine adjustment motor 10, the driven gear 15 is mounted in the middle of the fine adjustment transmission rod 16, the driven gear 15 is meshed with the driving gear 14, screw areas at two ends of the fine adjustment transmission rod 16 are respectively in threaded connection with the first connecting seat 17, one ends of two rotating connecting rods 18 are respectively in rotating connection with the first connecting seats 17 at two ends of the fine adjustment transmission rod 16, and the other ends of the two rotating connecting rods are respectively in rotating connection with the second connecting seats 19 fixed at the bottom of the detection mechanism 20; the two first connecting seats 17 and the two rotating connecting rods 18 are symmetrically arranged about the center line of the driven gear 15.

The working process of the utility model is as follows: when the tunnel structure detection method and the tunnel structure detection device are used, firstly, as shown in fig. 1, 2 and 7, before the tunnel structure is detected, the tunnel structure detection device is adjusted according to specific requirements, when the whole tunnel structure is required to be adjusted in a large range, the coarse adjustment motor 4 is used for driving the first transmission rod 5 to rotate, meanwhile, as shown in fig. 1 and 6, the four second transmission rods 7 are driven to synchronously rotate by utilizing meshed transmission among a plurality of groups of transmission bevel gears, so that five transmission rods can synchronously move in coarse adjustment, and the consistency of adjustment is ensured. As shown in fig. 1, fig. 4 and fig. 5, the adjusting bolt 9 at the free end of the transmission rod is in threaded connection with the connecting sleeve rod 11, and is matched with the sliding structure formed on the limiting frame 2 to limit the rotation of the connecting sleeve rod 11, so that the connecting sleeve rod 11 moves up and down on the adjusting bolt 9, and the position of the detecting assembly 20 can be adjusted to meet the detecting requirement.

As shown in fig. 1 and 3, when a certain detection component 20 needs to be adjusted independently, the fine adjustment motor 10 is used to drive the driving gear 14 to rotate, the meshing connection between the driving gear 14 and the driven gear 15 is used to rotate the fine adjustment transmission rod 16, the threaded connection between the fine adjustment transmission rod 16 and the first connection seat 17 is used to move the first connection seat 17, and finally the rotation connection between the first connection seat 17 and the rotation connection rod 18 and the second connection seat 19 is used to fine adjust the position of the detection component 20, so that the detection result is clearer and the final detection structure is more accurate.

Finally, as shown in fig. 8, the tunnel is accurately shot and detected by using the prime camera 2002 and the laser scanner 2003, the shot image and detection data are finally transmitted to the central processing chip, and after being processed and analyzed by the central processing chip, the shot image and detection data are transmitted to the data display for inspection by a detector, meanwhile, an alarm is arranged on the data display, when the displayed result is problematic, the alarm alarms the detector to remind the detector, so that the problem of the detection result caused by negligence of the detector is prevented, and finally, the detected data structure is recorded into the data memory for storage, namely, the tunnel structure detection method and the use method of the tunnel structure detection device are provided.

Standard parts used in the utility model can be purchased from the market, special-shaped parts can be customized according to the description of the specification and the drawings, the specific connection modes of all parts adopt conventional means such as mature bolts, rivets and welding in the prior art, the machinery, the parts and the equipment adopt conventional modes in the prior art, and the circuit connection adopts conventional connection modes in the prior art, so that details are not described in detail in the specification, and the utility model belongs to the prior art known to the person skilled in the art.

Although the present utility model has been described with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments described, or equivalents may be substituted for elements thereof, and any modifications, equivalents, improvements and changes may be made without departing from the spirit and principles of the present utility model.

Claims

1. The utility model provides a tunnel structure detection device which characterized in that: the detection device comprises a walking base (1), an arc-shaped mounting frame (3), a rough adjusting mechanism and a plurality of groups of detection components, wherein the arc-shaped mounting frame (3) is arranged on the walking base (1), the arc surface of the arc-shaped mounting frame faces upwards, the plurality of groups of detection components are distributed along the arc surface of the arc-shaped mounting frame (3), each group of detection components comprises a fixed base (12) and a detection mechanism (20) arranged on the fixed base (12), and a connecting loop bar (11) is arranged at the bottom of the fixed base (12) of each group of detection components; the coarse adjustment mechanism comprises a coarse adjustment motor (4), a first transmission rod (5) and a plurality of second transmission rods (7), wherein the first transmission rod (5) and the plurality of second transmission rods (7) are respectively arranged at positions corresponding to each group of detection components, the coarse adjustment motor (4) is arranged in an arc-shaped mounting frame (3), the first transmission rod (5) is connected with the output end of the coarse adjustment motor (4), the plurality of second transmission rods (7) are rotatably arranged on the arc-shaped mounting frame (3), the free end of each transmission rod is provided with an adjusting screw (9), and each group of detection components is respectively connected with the adjusting screw (9) on the corresponding transmission rod through a connecting sleeve rod (11) at the bottom of a fixed base (12) of the detection component; one end, away from the detection assembly, of the first transmission rod (5) is fixedly provided with a driving gear (6), one end, away from the detection assembly, of each second transmission rod (7) is fixedly provided with a linkage gear (8), the driving gear (6) is sequentially connected with a plurality of linkage gears (8) in a transmission mode, and the driving gear (6) drives the plurality of linkage gears (8) to rotate simultaneously.

2. The tunnel structure detection apparatus according to claim 1, wherein: the detection device is characterized in that a fine adjustment mechanism is arranged between the detection mechanism (20) and the fixed base (12), the fine adjustment mechanism comprises a fine adjustment motor (10), a driving gear (14), a driven gear (15), a fine adjustment transmission rod (16) and two rotating connecting rods (18), the fine adjustment motor (10) is arranged inside the fixed base (12), the fine adjustment transmission rod (16) is horizontally arranged between the detection mechanism (20) and the fixed base (12), and screw rods are respectively arranged at two ends of the fine adjustment transmission rod; the driving gear (14) is arranged on an output shaft of the fine adjustment motor (10), the driven gear (15) is arranged in the middle of the fine adjustment transmission rod (16), the driven gear (15) is meshed with the driving gear (14) mutually, screw rod areas at two ends of the fine adjustment transmission rod (16) are respectively connected with the first connecting seats (17) in a threaded mode, one ends of the two rotating connecting rods (18) are respectively hinged with the first connecting seats (17) at two ends of the fine adjustment transmission rod (16), and the other ends of the two rotating connecting rods are hinged with the second connecting seats (19) fixed at the bottom of the detection mechanism (20).

3. A tunnel construction detection apparatus according to claim 1 or 2, wherein: the detection mechanism (20) is composed of a mounting base plate (2001), a fixed focus camera (2002) and a laser scanner (2003), the mounting base plate (2001) is mounted on a fixed base (12), the fixed focus camera (2002) and the laser scanner (2003) are arranged on the mounting base plate (2001) and adjacent to a tunnel face, and the laser scanner (2003) is located on the outer side of the fixed focus camera (2002).

4. A tunnel construction detection apparatus according to claim 1 or 2, wherein: every group detects connecting sleeve rod (11) of subassembly and is equipped with spacing (2) outward, spacing includes spacing bottom plate (201) and two piece at least gag lever posts (202), is equipped with spout (21) in connecting sleeve rod (11) outer wall correspondence, spacing bottom plate (201) are connected with arc mounting bracket (3) through the support, and first transfer line (5) and second transfer line (7) pass every spacing bottom plate that corresponds respectively, and two piece at least gag lever posts (202) disperse setting are outside connecting sleeve rod (11) to be parallel to each other with connecting sleeve rod (11), every gag lever post (202) one end is fixed on limiting bottom plate (201), and the other end is equipped with slider (203) with spout (21) assorted to through slider (203) and spout (21) sliding connection.

5. A tunnel construction detection apparatus according to claim 1 or 2, wherein: the bottom surface of the walking base (1) is provided with a walking wheel (101) with a brake mechanism.

6. A tunnel construction detection apparatus according to claim 1 or 2, wherein: the first transmission rods (5) are located on the vertical middle parting line of the arc-shaped installation frame (3), a plurality of second transmission rods (7) are symmetrically distributed on two sides of the first transmission rods (5), gears on each transmission rod are bevel gears, the gears are meshed in sequence, the rotation directions of two adjacent gears are opposite, and the rotation directions of threads of adjusting screws (9) on two adjacent transmission rods are opposite.

7. A tunnel construction detection apparatus according to claim 1 or 2, wherein: arc mounting bracket (3) are provided with the bilayer, are equipped with the gear chamber between the bilayer support body, in coarse adjustment motor (4) are installed in the inlayer support body, second transfer line (7) rotate and install on the inlayer support body, and the other end stretches out outer support body and is connected with detecting assembly, driving gear (6) and a plurality of linkage gear (8) distribute in the gear chamber.

8. A tunnel construction inspection device according to claim 2, wherein: the first connecting seats (17) are connected with the rotary connecting rods (18) and the rotary connecting rods (18) are connected with the second connecting seats (19) in a rotary mode, and the two first connecting seats (17) and the two rotary connecting rods (18) are symmetrically arranged left and right relative to the center line of the driven gear (15).

9. The tunnel structure inspection device according to claim 4, wherein: four limit rods (202) are arranged and are uniformly distributed outside the connecting loop bars (11); limiting bottom plates (201) are provided with limiting sleeves (204) at the connecting positions of the limiting bottom plates and corresponding transmission rods, limiting blocks (205) are arranged on the inner walls of the limiting sleeves (204), annular grooves (206) are correspondingly formed in the first transmission rods (5) and the second transmission rods (7), and the limiting blocks (205) on the inner walls of the limiting sleeves (204) are embedded into the annular grooves (206).