Bridge crack detection device and detection method

Abstract

The invention discloses a bridge crack detection device and method, and the device comprises an engineering vehicle, and also comprises a first hydraulic telescopic column, an adjusting device, a measuring arm, a measuring device, and a control device. A mounting column is arranged on the engineering vehicle, a cross beam is arranged on the mounting column in a sliding mode, a first hydraulic telescopic column is vertically and rotatably arranged at one end of the cross beam, the telescopic end of the first hydraulic telescopic column is arranged downwards and provided with an adjusting device, and the measuring arm is arranged in a reciprocating motion mode in the length direction of the measuring arm through the adjusting device. The measuring device is fixedly arranged at one end of the measuring arm, a first detection device is elastically arranged on the upper end face of the measuring device, and a second detection device is telescopically arranged on the side face in the direction perpendicular to the measuring arm. The cross beam, the first hydraulic telescopic column, the adjusting device and the measuring device are all electrically connected with the control device.

Description

Technical Field

[0001] The present invention relates to the technical field of bridge detection, and in particular to a bridge crack detection device and a detection method. Background Art

[0002] During long-term use, bridges are prone to cracks due to the influence of vehicle loads, environmental factors, etc. The presence of cracks will reduce the bearing capacity and durability of the bridge, and in severe cases may cause the bridge to collapse. Therefore, it is of great significance to detect bridge cracks in a timely and accurate manner.

[0003] In the prior art, the invention authorization patent with patent number CN202110414865.2 discloses a bridge crack detection device, which belongs to the field of bridge detection, and includes a base and a pulley arranged on the bottom surface of the base, a motor is arranged on the base, a screw is fixed to the output end of the motor, a lifting platform is arranged above the base, a lifting cylinder is fixed to the bottom surface of the lifting platform, and the lifting cylinder is threadedly connected to the screw, a limiting cylinder is fixed on the base, which is sleeved outside the lifting cylinder and slidably connected to the lifting cylinder, and the lifting cylinder can slide in the vertical direction along the limiting cylinder, and a bracket is arranged on the lifting platform, and a crack detector is clamped in the bracket.

[0004] The above patent describes a bridge crack detection device, which can detect the bridge at the bottom of the bridge by setting up a lifting platform; however, the device is not suitable for viaducts and bridges built on the river; further improvement is needed. Summary of the invention

[0005] The purpose of the present invention is to provide a bridge crack detection device and a detection method, aiming to improve the existing bridge crack detection device by setting a lifting platform to facilitate the detection instrument to rise to a position close to the bottom of the bridge for detection, but the device is not suitable for viaducts and bridges built on the river.

[0006] The present invention is achieved in that: According to one aspect of the present invention, the present invention provides a bridge crack detection device, including an engineering vehicle, and also including a first hydraulic telescopic column, an adjustment device, a measuring arm, a measuring device and a control device; the engineering vehicle is provided with a mounting column, a crossbeam is slidably provided on the mounting column, one end of the crossbeam is provided with a first hydraulic telescopic column for vertical rotation, the telescopic end of the first hydraulic telescopic column is arranged downward, and an adjustment device is installed, the measuring arm can be reciprocated along the length direction of the measuring arm through the adjustment device, the measuring device is fixedly arranged at one end of the measuring arm, the upper end surface of the measuring device is elastically provided with a first detection device, and the side surface is telescopically provided with a second detection device in a direction perpendicular to the measuring arm; the crossbeam, the first hydraulic telescopic column, the adjustment device and the measuring device are all electrically connected to the control device.

[0007] Preferably, the cross beam includes a gravity balance block, a first beam body, a second beam body and a second hydraulic telescopic column. The first beam body of the cross beam is laterally movably installed in the mounting column, and the second beam body is vertically arranged at one end downward. The lower end of the second beam body is provided with a gravity balance block, and the other end is installed with a first mounting bearing. One end of the second hydraulic telescopic column is installed on the side of the mounting column, and the other end is installed on the side of the second beam body; the first hydraulic telescopic column is installed in the first mounting bearing.

[0008] Preferably, it further includes a first motor; the first hydraulic telescopic column includes a body, the body is installed in a first mounting bearing, a telescopic end is provided at the lower end of the body, and an adjustment device is provided at the lower end of the telescopic end; a first motor is provided at the upper end of the first beam body near the first hydraulic telescopic column, a first driving gear is provided on the output shaft of the first motor, a first driven gear matched with the first driving gear is provided on the body, and the first driving gear and the first driven gear are meshed.

[0009] Preferably, the adjustment device comprises an adjustment hole, a sliding hole and a second driven gear, and the adjustment device is provided with an adjustment hole and a sliding hole, the adjustment hole is located inside the adjustment device and is provided with a hole wall, a second mounting bearing is installed on the outer side of the hole wall, a mounting sleeve matching the second mounting bearing is provided on the side of the second driven gear, the mounting sleeve is sleeved on the second mounting bearing, and a threaded mounting hole is coaxially provided at the position of the second driven gear corresponding to the adjustment hole; the measuring arm is provided with a screw shaft and a sliding rod at the positions of the threaded mounting holes and the sliding holes one by one, the screw shaft is threadedly installed in the threaded mounting hole and extends to the outside through the adjustment hole, and the sliding rod is slidably installed in the sliding hole.

[0010] Preferably, the adjustment device further comprises a second motor, and the second motor is arranged on the outside of the adjustment device, and the output shaft of the second motor extends to the inside of the adjustment device and is provided with a second driving gear, and the second driving gear is meshed with a second driven gear.

[0011] Preferably, the measuring arm further comprises a fixing block, and the screw shaft and the sliding rod are aligned at both ends, one end is fixed by the fixing block, and the other end is fixedly mounted on the side of the measuring device.

[0012] Preferably, the measuring device includes a first detection device and a second detection device, the upper end surface of the measuring device is elastically provided with a mounting seat, and the upper end surface of the mounting seat is provided with the first detection device; the measuring device is provided with a contraction hole on the side along the driving direction of the engineering vehicle, an electric telescopic column is provided in the contraction hole, and the telescopic end of the electric telescopic column is provided with a second detection device, and the second detection device is telescopically arranged in the contraction hole through the electric telescopic column.

[0013] Preferably, a mounting rod is provided at the bottom of the mounting seat, a return spring is sleeved on the mounting rod, and the mounting rod is elastically and slidably mounted in the measuring device by the return spring.

[0014] Preferably, a cleaning device is further included, and a cleaning device is arranged on the mounting seat, and the cleaning device includes a vertical rod, a screw shaft, a third motor and a cleaning brush, the upper end surface of the mounting seat is located on both sides of the first detection device and screw shafts are symmetrically arranged through the vertical rod, one end of the screw shaft extends to the outside and a first bevel gear is arranged, and a mounting rod is arranged at one end of the mounting seat corresponding to the first bevel gear, a rotating shaft is rotatably arranged on the mounting rod, a third motor is arranged below the rotating shaft, a third bevel gear is arranged on the output shaft of the third motor, and the rotating shaft is respectively provided with matching second bevel gears at positions corresponding to the first bevel gear and the third bevel gear; both ends of the cleaning brush are threadedly mounted on the corresponding screw shafts.

[0015] According to a second aspect of the present invention, the present invention provides a bridge crack detection method, the specific steps of the bridge crack detection method are as follows: S100, driving the engineering vehicle along the bridge, and when it reaches the position to be inspected, the control device controls the crossbeam to move toward the side of the bridge, and when the measuring arm is located outside the bridge, the first hydraulic telescopic column is extended downward so that the measuring arm is located under the bridge; S200, controlling the second hydraulic telescopic column to rotate as a whole at the crossbeam installation position, so that the measuring device on the measuring arm is located below the bridge; S300, controlling the measuring arm to telescopically move by adjusting the device, so as to control the measuring device to detect cracks at the bottom of the bridge; S400. The data detected by the measuring device is transmitted to the control device for recording.

[0016] Compared with the prior art, the present invention has the following beneficial effects: 1. The present invention sets a crossbeam and rotatably sets a first hydraulic telescopic column on one side of the crossbeam, and then sets a measuring arm telescopically at the lower end of the first hydraulic telescopic column through an adjusting device, so that the measuring device can be extended to the bottom of the bridge on the bridge deck to detect the bridge. Viaducts and bridges built on the river surface can also be detected.

[0017] 2. The present invention provides a second detection device, which can be extended to the side of the pier for detection via an electric telescopic column. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a three-dimensional structural schematic diagram of the present invention; Figure 2It is a front structural schematic diagram of the present invention in working state; Figure 3 It is a schematic diagram of the three-dimensional structure of the present invention in working state; Figure 4 It is a schematic diagram of the installation structure of the installation column and the crossbeam of the present invention; Figure 5 It is a three-dimensional structural schematic diagram of the first hydraulic telescopic column and the adjusting device housing of the present invention; Figure 6 The present invention Figure 5 The structural diagram at A in the middle; Figure 7 It is a schematic diagram of the structure inside the first hydraulic telescopic column and the adjustment device of the present invention; Figure 8 The present invention Figure 7 The structural diagram at B in the middle; Fig. 9 is a structural schematic diagram of the second driven gear of the present invention; Fig.10 It is a schematic diagram of the structure of the measuring arm and the measuring device of the present invention; Fig.11 is a schematic diagram of the cross-sectional structure of the measuring device of the present invention; Fig.12 It is a schematic diagram of the three-dimensional structure of the cleaning device of the present invention; Fig.13 It is a structural schematic diagram of the side of the present invention.

[0019] In the figure: 1, engineering vehicle; 2, mounting column; 3, crossbeam; 301, gravity balance block; 302, first mounting bearing; 303, first beam body; 304, second beam body; 305, second hydraulic telescopic column; 4, first hydraulic telescopic column; 401, body; 402, telescopic end; 403, first driven gear; 5, first motor; 501, first driving gear; 6, adjustment device; 601, adjustment hole; 602, second mounting bearing; 603, sliding hole; 604, second driven gear; 605, second motor; 606, second driving gear; 607, threaded mounting hole; 608, mounting sleeve Cylinder; 7, measuring arm; 701, screw shaft; 702, sliding rod; 703, fixing block; 8, measuring device; 801, mounting seat; 802, mounting rod; 803, reset spring; 804, first detection device; 805, contraction hole; 806, electric telescopic column; 807, second detection device; 9, control device; 10, cleaning device; 1001, vertical pole; 1002, screw shaft; 1003, first bevel gear; 1004, mounting rod; 1005, rotating shaft; 1006, third motor; 1007, second bevel gear; 1008, third bevel gear; 1009, cleaning brush. DETAILED DESCRIPTION

[0020] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0021] The following is a further description with reference to the accompanying drawings and specific embodiments: Example 1

[0022] like Figure 1 , Figure 3 , Figure 4 and Fig.13 As shown, a bridge crack detection device includes an engineering vehicle 1, a first hydraulic telescopic column 4, an adjustment device 6, a measuring arm 7, a measuring device 8 and a control device 9; the engineering vehicle 1 is provided with a mounting column 2, and a crossbeam 3 is slidably provided on the mounting column 2. By sliding the crossbeam 3, the crossbeam 3 can be controlled to move and extend to the outside of the bridge, which is convenient for the detection work. A first hydraulic telescopic column 4 is vertically rotatably provided at one end of the crossbeam 3. By rotating the first hydraulic telescopic column 4, the first hydraulic telescopic column 4 can be rotated 90 degrees, which is convenient for adjusting the direction of the bottom measuring arm. The cross beam 3 includes a gravity balance block 301, a first beam body 303, a second beam body 304, and a second hydraulic telescopic column 305. The first beam body 303 of the cross beam 3 is installed in the installation column 2 in a horizontally movable manner, and the second beam body 304 is arranged vertically downward at one end. The lower end of the second beam body 304 is provided with a gravity balance block 301. The gravity balance block 301 can be set to prevent the engineering vehicle from overturning due to one side being overweight during inspection. The weight of the gravity balance block 301 can be customized according to actual conditions, and the material is a steel shell filled with mud and sand. The other end is installed with a first installation bearing 302. One end of the second hydraulic telescopic column 305 is installed on the side of the installation column 2, and the other end is installed on the side of the second beam body 304. The second hydraulic telescopic column 305 can be used to control the movement of the cross beam 3.

[0023] like Figure 2 , Figure 4 and Figure 5As shown, the first hydraulic telescopic column 4 is installed in the first mounting bearing 302. In addition, a first motor 5 is also included; the first hydraulic telescopic column 4 includes a body 401, which is installed in the first mounting bearing 302. By setting the first mounting bearing 302, the first hydraulic telescopic column 4 is convenient for overall rotation. The lower end of the body 401 is provided with a telescopic end 402, and the lower end of the telescopic end 402 is provided with an adjustment device 6; the upper end of the first beam 303 is provided with a first motor 5 near the first hydraulic telescopic column 4, and the output shaft of the first motor 5 is provided with a first driving gear 501, and the body 401 is provided with a first driven gear 403 adapted to the first driving gear 501, and the first driving gear 501 and the first driven gear 403 are meshed, and the first driven gear 403 can be driven to rotate by the first driving gear 501 on the first motor 5, thereby driving the first hydraulic telescopic column to rotate at a certain angle.

[0024] like Figure 5-Figure 9 As shown, the telescopic end of the first hydraulic telescopic column 4 is arranged downward, and an adjusting device 6 is installed. The adjusting device 6 includes an adjusting hole 601, a sliding hole 603 and a second driven gear 604. The adjusting hole 601 and the sliding hole 603 are arranged in the adjusting device 6. The adjusting hole 601 is located inside the adjusting device 6 and is provided with a hole wall extending therefrom. A second mounting bearing 602 is installed on the outer side of the hole wall. A mounting sleeve 608 matched with the second mounting bearing 602 is arranged on the side of the second driven gear 604. The mounting sleeve 608 is sleeved on the second mounting bearing 602. The second driven gear 604 is installed through the second mounting bearing 602. So that the second driven gear 604 is rotatably installed inside the adjusting device 6, the second driven gear 604 is coaxially provided with a threaded mounting hole 607 at a position corresponding to the adjusting hole 601; the adjusting device 6 also includes a second motor 605, and the second motor 605 is arranged on the outside of the adjusting device 6, and the output shaft of the second motor 605 extends to the inside of the adjusting device 6 where a second driving gear 606 is arranged, and the second driving gear 606 is meshed with the second driven gear 604, and the second driving gear 606 can be driven to rotate by the second motor 605, and then the second driven gear 604 is driven to rotate by the second driving gear 606.

[0025] like Fig.10As shown, the measuring arm 7 can be reciprocated along the length direction of the measuring arm 7 through the adjusting device 6, and the measuring arm 7 is provided with a screw shaft 701 and a slide bar 702 at positions corresponding to the threaded mounting holes 607 and the slide hole 603. The screw shaft 701 is threadedly mounted in the threaded mounting hole 607 and extends to the outside through the adjusting hole 601, and the slide bar 702 is slidably mounted in the slide hole 603. By providing the threaded mounting hole 607 in the second driven gear 604, the screw shaft 701 can be driven to move accordingly by the rotation of the second driven gear 604. The measuring arm 7 also includes a fixing block 703, and the screw shaft 701 and the slide bar 702 are aligned at both ends, one end is fixed by the fixing block 703, and the other end is fixedly mounted on the side of the measuring device 8. The measuring device 8 is fixedly arranged at one end of the measuring arm 7, and a first detection device 804 is elastically arranged on the upper end surface of the measuring device 8. By setting the first detection device 804, the bridge deck can be detected. The side surface is retractably provided with a second detection device 807 perpendicular to the direction of the measuring arm 7. By setting the second detection device 807 on the side surface of the measuring device 8, the second detection device 807 can be extended to the side to compensate for the fact that the measuring arm 7 is blocked by the bridge piers and the position between the bridge piers on both sides cannot be measured, so that the bridge deck at the bridge pier position can be measured by the second detection device 807.

[0026] like Figure 3 and Figure 10-12As shown, the measuring device 8 includes a first detection device 804 and a second detection device 807. The upper end surface of the measuring device 8 is elastically provided with a mounting seat 801, and the upper end surface of the mounting seat 801 is provided with the first detection device 804; a mounting rod 802 is provided at the bottom of the mounting seat 801, and a reset spring 803 is sleeved on the mounting rod 802. The mounting rod 802 is provided with the reset spring 803 to prevent the upper end surface of the measuring device 8 from colliding with the bridge deck, thereby causing damage to the first detection device 804. The measuring device 8 is provided with a contraction hole 805 on the side along the driving direction of the engineering vehicle, and an electric telescopic column 806 is provided in the contraction hole 805. The telescopic end of the electric telescopic column 806 is provided with a second detection device 807, and the second detection device 807 is telescopically arranged in the contraction hole 805 through the electric telescopic column 806. In addition, a cleaning device 10 is included. The cleaning device 10 is arranged on the mounting seat 801. The cleaning device 10 includes a vertical rod 1001, a screw shaft 1002, a third motor 1006 and a cleaning brush 1009. The upper end surface of the mounting seat 801 is located on both sides of the first detection device 804, and the screw shafts 1002 are symmetrically arranged through the vertical rod 1001. One end of the screw shaft 1002 extends to the outside and a first bevel gear 1003 is arranged. The mounting seat 801 is provided with a mounting rod 1004 at one end corresponding to the first bevel gear 1003. A rotating shaft 1005 is rotatably arranged on the mounting rod 1004, and a third motor 1006 is arranged below the rotating shaft 1005. The output shaft of the motor 1006 is provided with a third bevel gear 1008, and the positions of the rotating shaft 1005 corresponding to the first bevel gear 1003 and the third bevel gear 1008 are respectively provided with matching second bevel gears 1007; the two ends of the cleaning brush 1009 are threadedly installed on the corresponding screw shaft 1002, and the rotating shaft 1005 can be driven to rotate by the third motor 1006, thereby driving the screw shaft 1002 to rotate, and the cleaning brush 1009 is driven by the thread to reciprocate along the direction of the screw shaft 1002, and the upper surface of the first detection device 804 can be cleaned to prevent dust from the bottom of the bridge from falling on it and affecting the detection quality. The crossbeam 3, the first hydraulic telescopic column 4, the adjustment device 6, the measuring device 8 and the cleaning device 10 are all electrically connected to the control device 9. Example 2

[0027] like Figure 1 , Figure 3 , Figure 4 and Fig.13As shown, a bridge crack detection device includes an engineering vehicle 1, a first hydraulic telescopic column 4, an adjustment device 6, a measuring arm 7, a measuring device 8 and a control device 9; the engineering vehicle 1 is provided with a mounting column 2, and a crossbeam 3 is slidably provided on the mounting column 2. By sliding the crossbeam 3, the crossbeam 3 can be controlled to move and extend to the outside of the bridge, which is convenient for the detection work. The first hydraulic telescopic column 4 is vertically rotated at one end of the crossbeam 3, and the crossbeam 3 includes a gravity balance block 301, a first beam body 303, a second beam body 304 and a second hydraulic telescopic column 305. The first beam body 303 of the crossbeam 3 is horizontally movably installed in the mounting column 2, and the second beam body 304 is vertically downwardly provided at one end. The lower end of the second beam body 304 is provided with a gravity balance block 301. By providing the gravity balance block 301, it can be prevented that the engineering vehicle is overturned due to one side being overweight during the detection. The other end is installed with a first mounting bearing 302 . One end of a second hydraulic telescopic column 305 is installed on the side of the mounting column 2 , and the other end is installed on the side of the second beam body 304 . The second hydraulic telescopic column 305 can be used to control the movement of the beam 3 .

[0028] like Figure 2 , Figure 4 and Figure 5 As shown, the first hydraulic telescopic column 4 is installed in the first mounting bearing 302. In addition, a first motor 5 is also included; the first hydraulic telescopic column 4 includes a body 401, the body 401 is installed in the first mounting bearing 302, the lower end of the body 401 is provided with a telescopic end 402, and the lower end of the telescopic end 402 is provided with an adjustment device 6; the upper end of the first beam 303 is provided with a first motor 5 near the first hydraulic telescopic column 4, the output shaft of the first motor 5 is provided with a first driving gear 501, the body 401 is provided with a first driven gear 403 adapted to the first driving gear 501, and the first driving gear 501 and the first driven gear 403 are meshed.

[0029] like Figure 5-Figure 9As shown, the telescopic end of the first hydraulic telescopic column 4 is arranged downward, and an adjusting device 6 is installed. The adjusting device 6 includes an adjusting hole 601, a sliding hole 603 and a second driven gear 604. The adjusting hole 601 and the sliding hole 603 are arranged in the adjusting device 6. The adjusting hole 601 is located inside the adjusting device 6 and is provided with a hole wall extending therefrom. A second mounting bearing 602 is installed on the outer side of the hole wall. A mounting sleeve 608 matched with the second mounting bearing 602 is arranged on the side of the second driven gear 604. The mounting sleeve 608 is sleeved on the second mounting bearing 602. The second driven gear 604 is installed through the second mounting bearing 602. So that the second driven gear 604 is rotatably installed inside the adjusting device 6, the second driven gear 604 is coaxially provided with a threaded mounting hole 607 at a position corresponding to the adjusting hole 601; the adjusting device 6 also includes a second motor 605, and the second motor 605 is arranged on the outside of the adjusting device 6, and the output shaft of the second motor 605 extends to the inside of the adjusting device 6 where a second driving gear 606 is arranged, and the second driving gear 606 is meshed with the second driven gear 604, and the second driving gear 606 can be driven to rotate by the second motor 605, and then the second driven gear 604 is driven to rotate by the second driving gear 606.

[0030] like Fig.10 As shown, the measuring arm 7 can be reciprocated along the length direction of the measuring arm 7 through the adjusting device 6, and the measuring arm 7 is provided with a screw shaft 701 and a slide bar 702 at positions corresponding to the threaded mounting holes 607 and the slide hole 603. The screw shaft 701 is threadedly mounted in the threaded mounting hole 607 and extends to the outside through the adjusting hole 601, and the slide bar 702 is slidably mounted in the slide hole 603. By providing the threaded mounting hole 607 in the second driven gear 604, the screw shaft 701 can be driven to move accordingly by the rotation of the second driven gear 604. The measuring arm 7 also includes a fixing block 703, and the screw shaft 701 and the slide bar 702 are aligned at both ends, one end is fixed by the fixing block 703, and the other end is fixedly mounted on the side of the measuring device 8. The measuring device 8 is fixedly arranged at one end of the measuring arm 7, and a first detection device 804 is elastically arranged on the upper end surface of the measuring device 8. By setting the first detection device 804, the bridge deck can be detected. The side surface is retractably provided with a second detection device 807 perpendicular to the direction of the measuring arm 7. By setting the second detection device 807 on the side surface of the measuring device 8, the second detection device 807 can be extended to the side to compensate for the fact that the measuring arm 7 is blocked by the bridge piers and the position between the bridge piers on both sides cannot be measured, so that the bridge deck at the bridge pier position can be measured by the second detection device 807.

[0031] like Figure 3 and Figure 10-12As shown, the measuring device 8 includes a first detection device 804 and a second detection device 807. The upper end surface of the measuring device 8 is elastically provided with a mounting seat 801, and the upper end surface of the mounting seat 801 is provided with the first detection device 804; a mounting rod 802 is provided at the bottom of the mounting seat 801, and a reset spring 803 is sleeved on the mounting rod 802. The mounting rod 802 is provided with the reset spring 803 to prevent the upper end surface of the measuring device 8 from colliding with the bridge deck, thereby causing damage to the first detection device 804. The measuring device 8 is provided with a contraction hole 805 on the side along the driving direction of the engineering vehicle, and an electric telescopic column 806 is provided in the contraction hole 805. The telescopic end of the electric telescopic column 806 is provided with a second detection device 807, and the second detection device 807 is telescopically arranged in the contraction hole 805 through the electric telescopic column 806. In addition, a cleaning device 10 is provided on the mounting seat 801. The cleaning device 10 includes a vertical rod 1001, a screw shaft 1002, a third motor 1006 and a cleaning brush 1009. The upper end surface of the mounting seat 801 is located on both sides of the first detection device 804 and the screw shaft 1002 is symmetrically provided through the vertical rod 1001. One end of the screw shaft 1002 extends to the outside and is provided with a first bevel gear 1003. The mounting seat 801 corresponds to one end of the first bevel gear 1003. The end of the first hydraulic telescopic column 1002 is provided with a mounting rod 1004, a rotating shaft 1005 is rotatably provided on the mounting rod 1004, a third motor 1006 is provided below the rotating shaft 1005, a third bevel gear 1008 is provided on the output shaft of the third motor 1006, and the rotating shaft 1005 is provided with a second bevel gear 1007 corresponding to the first bevel gear 1003 and the third bevel gear 1008; both ends of the cleaning brush 1009 are threadedly installed on the corresponding screw shaft 1002. The crossbeam 3, the first hydraulic telescopic column 4, the adjustment device 6, the measuring device 8 and the cleaning device 10 are all electrically connected to the control device 9.

[0032] Working principle of the present invention: When using the device, the cross beam 3 can be moved by the second hydraulic telescopic column 305, so as to facilitate moving the first hydraulic telescopic column 4 on the cross beam 3 to the outside of the bridge, and then the first driving gear 501 can be driven to rotate by the first motor 5, and the first driving gear 501 drives the first driven gear 403 on the first hydraulic telescopic column 4 to rotate, so that the first hydraulic telescopic column 4 rotates as a whole, so that the measuring arm 7 can be horizontally placed under the bridge, and then the second driving gear 606 can be driven to rotate by the second motor 605 in the adjustment device 6, and the second driving gear 606 drives the second driven gear 604 to rotate, and the screw shaft 701 is driven forward through the threaded mounting hole 607 in the second driven gear 604. After moving, the movement of the measuring arm 7 can be completed, and the measuring device 8 can be moved to the position to be detected, and the bridge deck can be detected by the first detection device 804. When the measuring arm 7 is located at the pier and cannot be extended into it, the electric telescopic column 806 in the measuring device 8 can drive the second detection device 807 to extend to the side of the pier for detection. When dust falls on the first detection device 804, the third motor 1006 can drive the rotating shaft 1005 to rotate, thereby driving the screw shaft 1002 to rotate. The cleaning brush 1009 is driven by the thread to reciprocate along the direction of the screw shaft 1002, so as to clean the upper surface of the first detection device 804 to prevent dust at the bottom of the bridge from falling on it and affecting the detection quality. Example 3

[0033] like Figure 4 , Figure 5 and Figure 6 As shown, a bridge crack detection method is provided, and the specific steps of the bridge crack detection method are as follows: S100, driving the engineering vehicle along the bridge, and when it reaches the position to be inspected, the control device controls the crossbeam to move toward the side of the bridge, and when the measuring arm is located outside the bridge, the first hydraulic telescopic column is extended downward so that the measuring arm is located under the bridge; S200, controlling the second hydraulic telescopic column to rotate as a whole at the crossbeam installation position, so that the measuring device on the measuring arm is located below the bridge; S300, controlling the measuring arm to telescopically move by adjusting the device, so as to control the measuring device to detect cracks at the bottom of the bridge; S400. The data detected by the measuring device is transmitted to the control device for recording.

[0034] In summary, the present invention sets a crossbeam 3, and rotatably sets a first hydraulic telescopic column 4 on one side of the crossbeam 3, and then telescopically sets a measuring arm 7 at the lower end of the first hydraulic telescopic column 4 through an adjustment device 6, so as to facilitate extending the measuring device 8 on the bridge deck to the bottom of the bridge for bridge inspection. Viaducts and bridges built on the river surface can also be inspected; by setting a second detection device 807, the second detection device 807 can be extended to the side of the bridge pier for inspection through an electric telescopic column 806.

[0035] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A bridge crack detection device, comprising an engineering vehicle (1), characterized in that: It also comprises a first hydraulic telescopic column (4), an adjustment device (6), a measuring arm (7), a measuring device (8) and a control device (9); the engineering vehicle (1) is provided with a mounting column (2), a crossbeam (3) is slidably provided on the mounting column (2), one end of the crossbeam (3) is provided with a first hydraulic telescopic column (4) for vertical rotation, the telescopic end of the first hydraulic telescopic column (4) is provided downwardly and is provided with an adjustment device (6), the measuring arm (7) is reciprocatably provided along the length direction of the measuring arm (7) through the adjustment device (6), the measuring device (8) is fixedly provided at one end of the measuring arm (7), the upper end surface of the measuring device (8) is elastically provided with a first detection device (804), and the side surface is telescopically provided with a second detection device (807) in a direction perpendicular to the measuring arm (7); the crossbeam (3), the first hydraulic telescopic column (4), the adjustment device (6) and the measuring device (8) are all electrically connected to the control device (9).

2. A bridge crack detection device according to claim 1, characterized in that: The cross beam (3) comprises a gravity balance block (301), a first beam body (303), a second beam body (304) and a second hydraulic telescopic column (305); the first beam body (303) of the cross beam (3) is movably installed in the mounting column (2) in a transverse direction, and the second beam body (304) is arranged vertically downward at one end; the lower end of the second beam body (304) is provided with a gravity balance block (301), and the other end is installed with a first mounting bearing (302); one end of the second hydraulic telescopic column (305) is installed on the side of the mounting column (2), and the other end is installed on the side of the second beam body (304); the first hydraulic telescopic column (4) is installed in the first mounting bearing (302).

3. A bridge crack detection device according to claim 2, characterized in that: In addition, it also includes a first motor (5); the first hydraulic telescopic column (4) includes a body (401), the body (401) is mounted in a first mounting bearing (302), a telescopic end (402) is arranged at the lower end of the body (401), and an adjustment device (6) is arranged at the lower end of the telescopic end (402); a first motor (5) is arranged at the upper end of the first beam body (303) near the first hydraulic telescopic column (4), a first driving gear (501) is arranged on the output shaft of the first motor (5), a first driven gear (403) matched with the first driving gear (501) is arranged on the body (401), and the first driving gear (501) and the first driven gear (403) are meshed.

4. A bridge crack detection device according to claim 1, characterized in that: The adjusting device (6) comprises an adjusting hole (601), a sliding hole (603) and a second driven gear (604); the adjusting hole (601) and the sliding hole (603) are provided in the adjusting device (6); the adjusting hole (601) is located inside the adjusting device (6) and is provided with a hole wall extending therefrom; a second mounting bearing (602) is installed on the outer side of the hole wall; a mounting sleeve (608) matched with the second mounting bearing (602) is provided on the side of the second driven gear (604); the mounting sleeve (608) is sleeved The second driven gear (604) is mounted on a second mounting bearing (602); a threaded mounting hole (607) is coaxially arranged at a position corresponding to the adjustment hole (601); the measuring arm (7) is provided with a lead screw shaft (701) and a slide rod (702) at positions corresponding to the threaded mounting hole (607) and the slide hole (603); the lead screw shaft (701) is threadedly mounted in the threaded mounting hole (607) and extends to the outside through the adjustment hole (601); and the slide rod (702) is slidably mounted in the slide hole (603).

5. A bridge crack detection device according to claim 4, characterized in that: The adjusting device (6) further comprises a second motor (605), the second motor (605) being arranged outside the adjusting device (6), the output shaft of the second motor (605) extending to the inside of the adjusting device (6) where a second driving gear (606) is arranged, and the second driving gear (606) is meshed with the second driven gear (604).

6. A bridge crack detection device according to claim 4, characterized in that: The measuring arm (7) further comprises a fixing block (703), and the two ends of the lead screw shaft (701) and the slide rod (702) are aligned, one end is fixed by the fixing block (703), and the other end is fixedly mounted on the side of the measuring device (8).

7. A bridge crack detection device according to claim 1, characterized in that: The measuring device (8) comprises a first detection device (804) and a second detection device (807); the upper end surface of the measuring device (8) is elastically provided with a mounting seat (801), and the upper end surface of the mounting seat (801) is provided with the first detection device (804); the measuring device (8) is provided with a contraction hole (805) on the side surface along the driving direction of the engineering vehicle, an electric telescopic column (806) is provided in the contraction hole (805), the telescopic end of the electric telescopic column (806) is provided with the second detection device (807), and the second detection device (807) is telescopically arranged in the contraction hole (805) via the electric telescopic column (806).

8. A bridge crack detection device according to claim 7, characterized in that: A mounting rod (802) is provided at the bottom of the mounting seat (801), a return spring (803) is sleeved on the mounting rod (802), and the mounting rod (802) is elastically and slidably mounted in the measuring device (8) via the return spring (803).

9. A bridge crack detection device according to claim 7, characterized in that: In addition, a cleaning device (10) is included. The cleaning device (10) is arranged on the mounting seat (801). The cleaning device (10) includes a vertical rod (1001), a screw shaft (1002), a third motor (1006) and a cleaning brush (1009). The upper end surface of the mounting seat (801) is located on both sides of the first detection device (804). The screw shafts (1002) are symmetrically arranged through the vertical rods (1001). One end of the screw shaft (1002) extends to the outside and is provided with a first bevel gear (1003). The mounting seat (801) corresponds to the first bevel gear (1003). ) is provided with a mounting rod (1004) at one end, a rotating shaft (1005) is rotatably provided on the mounting rod (1004), a third motor (1006) is provided below the rotating shaft (1005), a third bevel gear (1008) is provided on the output shaft of the third motor (1006), and matching second bevel gears (1007) are respectively provided on the rotating shaft (1005) at positions corresponding to the first bevel gear (1003) and the third bevel gear (1008); both ends of the cleaning brush (1009) are threadedly mounted on the corresponding lead screw shaft (1002).

10. A bridge crack detection method, using the bridge crack detection device according to any one of claims 1 to 9, characterized in that: The specific steps are as follows: S100, driving the engineering vehicle along the bridge, and when it reaches the position to be inspected, the control device controls the crossbeam to move toward the side of the bridge, and when the measuring arm is located outside the bridge, the first hydraulic telescopic column is extended downward so that the measuring arm is located under the bridge; S200, controlling the second hydraulic telescopic column to rotate as a whole at the crossbeam installation position, so that the measuring device on the measuring arm is located below the bridge; S300, controlling the measuring arm to telescopically move by adjusting the device, and controlling the measuring device to detect cracks at the bottom of the bridge; S400. The data detected by the measuring device is transmitted to the control device for recording.

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