Bridge stay cable corrosion detection equipment

Abstract

The invention belongs to the technical field of detection equipment, and discloses bridge stay cable corrosion detection equipment which is technically characterized in that the bridge stay cable corrosion detection equipment comprises a box body, the box body is composed of an upper box body and a lower box body, an inner cavity of the upper box body is rotatably provided with two groups of upper rotating rods which are oppositely distributed, and the middle of each upper rotating rod is fixedly provided with a rolling column; a clamping mechanism matched with the rolling columns is arranged in an inner cavity of the lower box body, the clamping mechanism comprises an extrusion column and a telescopic assembly, a cleaning cylinder is arranged in an inner cavity of the box body, a control mechanism matched with the cleaning cylinder is arranged in an inner cavity of the upper box body, and the control mechanism comprises a positioning assembly and a transmission assembly. A purging mechanism is arranged in an inner cavity of the box body, the purging mechanism comprises a purging pipe and an air blowing assembly, and the problems that impurities attached to the surface of the stay cable cannot be cleaned at present, the impurities easily cover the corrosion position, and then the corrosion condition detection accuracy of the stay cable is poor are solved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of detection equipment, and particularly relates to a bridge stay cable corrosion detection equipment. BACKGROUND

[0002] The stay cable is also called a cable, and is a main load-bearing component of a cable-stayed bridge, which directly transmits the weight of a main beam and a bridge deck of the cable-stayed bridge to a tower. The cable-stayed bridge cable material is usually a steel cable, which is different in form according to a composition method and can be composed of parallel steel wires, parallel steel cables, single steel cables, steel ropes, closed steel cables or solid steel bars. Since the cable is placed in an inclined manner, it is called a stay cable. The cable-stayed bridge is composed of a cable tower, a main beam and a stay cable.

[0003] The stay cable needs to withstand rain and snow erosion in daily use, and therefore the corrosion condition of the stay cable needs to be detected. The existing detection equipment can only detect the surface of the stay cable through a detection probe in use, and cannot clean the impurities attached to the surface of the stay cable in the detection process. The impurities easily cover the corrosion position, and therefore the detection accuracy of the stay cable corrosion condition is poor. SUMMARY

[0004] The present application relates to the technical field of detection equipment, and particularly relates to a bridge stay cable corrosion detection equipment.

[0005] To achieve the above object, the present application provides the following technical scheme.

[0006] The utility model provides a bridge stay cable corrosion detection equipment, including box, the box is by upper box and lower box, upper box and lower box hinged connection, upper box and lower box surface is provided with first fastener, the both sides wall of opposite of upper box and lower box is provided with through -hole respectively, the upper cavity of upper box rotatably installs two groups of opposite distribution's upper rotary rod, the middle part of upper rotary rod is fixedly installed with the rolling column, and one end of upper rotary rod extends to the outside of upper box and is connected with motor, and the inner chamber of lower box is provided with the clamping mechanism of cooperation with the rolling column, the clamping mechanism includes extrusion column and telescopic component, the telescopic component is located in the inner chamber of lower box and is connected with extrusion column, and the telescopic component is used to control extrusion column to be right below the rolling column, and the surface of extrusion column and rolling column is respectively provided with annular cable groove, the inner chamber of upper box and lower box passes through the fixed installation of multiple corrosion detection probes respectively, the inner chamber of box is provided with cleaning cylinder, the cleaning cylinder is by upper cylinder and bottom cover, the longitudinal section of upper cylinder is annular structure with the notch of bottom, and the bottom cover is hinged to the bottom of upper cylinder, and the surface of bottom cover is provided with the second fastener of cooperation with upper cylinder, and the inner side wall of upper cylinder and bottom cover is provided with multiple groups of evenly distributed brush, the inner chamber of upper box is provided with the control mechanism of cooperation with cleaning cylinder, the control mechanism includes positioning assembly and transmission assembly, the inner side wall of upper box is positioned assembly and is connected with upper cylinder, and positioning assembly is used to support cleaning cylinder in the inner chamber of box, the inner chamber of upper box is transmission assembly and is connected with cleaning cylinder, and transmission assembly controls cleaning cylinder reciprocating movement in the inner chamber of box through the mode of cooperation with positioning assembly, the inner chamber of box is provided with blowing mechanism, and the blowing mechanism includes blowing pipe and air -blowing assembly, the blowing pipe is flexible structure and is fixedly installed at the inner side wall of cleaning cylinder, and the surface of blowing pipe is provided with multiple groups of evenly distributed air -outlet, the inner chamber of upper box is air -blowing assembly and is communicated with blowing pipe.

[0007] As a further scheme of the utility model: the telescopic component includes the vertical rod of inner chamber four quarters of lower box is fixedly installed, the surface of vertical rod is slidably installed with sliding block along the vertical direction, and the two groups of sliding blocks of opposite distribution are commonly rotatably installed with lower rotary rod, and the middle part of extrusion column is fixedly installed in lower rotary rod, the inner bottom wall of lower box is fixedly installed with extrusion spring, and extrusion spring surrounds the outside of vertical rod and is connected with the bottom wall of sliding block.

[0008] As a further scheme of the utility model: the positioning assembly includes multiple connecting rods of inner side wall fixed installation of upper box, and the multiple connecting rods are commonly fixedly installed with the arc -shaped bearing plate, and the surface of upper cylinder and bearing plate is pasted, and the surface of bearing plate is provided with multiple guide grooves, and the side wall of upper cylinder is fixedly installed with the guide strip of sliding connection with guide groove.

[0009] As a further scheme of the present application: the transmission assembly comprises a transverse plate fixedly installed at the top of the upper cylinder body, a limiting groove is formed in the surface of the transverse plate, a stand is rotatably installed on the inner top wall of the upper box body, a control disc is fixedly installed above the transverse plate at the bottom end of the stand, a limiting post is arranged on the surface of the control disc at a position deviated from the center, the limiting post is inserted into the limiting groove, two groups of vertical plates are fixedly installed on the inner top wall of the upper box body in opposite distribution, the first transmission shaft is rotatably installed on the two groups of vertical plates, a first driving bevel gear is fixedly installed at one end of the first transmission shaft facing the stand, a first driven bevel gear is fixedly installed on the surface of the stand in meshing connection with the first driving bevel gear, the second transmission shaft is rotatably installed in the inner cavity of the upper box body, a second driven bevel gear is fixedly installed at one end of the first transmission shaft facing the second transmission shaft, a second driving bevel gear is fixedly installed on the surface of the second transmission shaft in meshing connection with the second driven bevel gear, and the second transmission shaft and the surface of one group of upper rotating rods are respectively fixedly installed with synchronous gear plates, and the two groups of synchronous gear plates are commonly connected with a synchronous belt.

[0010] As a further scheme of the present application: the air blowing assembly comprises a baffle fixedly installed in the inner cavity of the upper box body, an air bag is fixedly installed on the surface of the baffle, an air guide pipe is fixedly installed on the surface of the air bag, and one end of the air guide pipe away from the air bag is in communication with the blowing pipe.

[0011] As a further scheme of the present application: the bottom wall of the lower box body is fixedly installed with a counterweight.

[0012] As a further scheme of the present application: a plurality of groups of chip removal holes are formed on the surface of the bottom cover in uniform distribution.

[0013] Compared with the prior art, the present application has the following beneficial effects: when the box body and the cleaning cylinder move along the surface of the stay cable, the positioning assembly and the transmission assembly are matched to control the cleaning cylinder and the brush to reciprocate on the outer side of the stay cable with a small amplitude, the brush can automatically clean the impurities attached to the surface of the stay cable in all directions, the air blowing assembly and the blowing pipe are matched to perform high-pressure blowing treatment on the surface of the stay cable, the cleaning effect of the stay cable is effectively improved, and the detection accuracy of the corrosion detection probe is effectively improved. The problem that the impurities attached to the surface of the stay cable cannot be cleaned, the impurities easily cover the corrosion position, and the detection accuracy of the stay cable corrosion condition is poor is solved. BRIEF DESCRIPTION OF DRAWINGS

[0014] Figure 1 It is a perspective structural schematic view of the bridge stay cable corrosion detection equipment provided in the embodiment of the present application.

[0015] Figure 2 It is a front view structural schematic view of the bridge stay cable corrosion detection equipment provided in the embodiment of the present application.

[0016] Figure 3 It is a left view structural schematic view of a bridge cable corrosion detection equipment provided in the embodiment of the present application.

[0017] Figure 4 It is a middle lower box body and its connecting structure schematic view of a bridge cable corrosion detection equipment provided in the embodiment of the present application.

[0018] Figure 5 It is a middle upper box body and its connecting structure schematic view of a bridge cable corrosion detection equipment provided in the embodiment of the present application. Figure 4 It is an enlarged structural schematic view of the middle A.

[0019] Figure 6 It is a middle upper box body and its connecting structure schematic view of a bridge cable corrosion detection equipment provided in the embodiment of the present application.

[0020] Wherein: 1-box body, 11-upper box body, 12-lower box body, 2-through hole, 3-upper rotating rod, 31-rolling column, 32-motor, 4-clamping mechanism, 41-extrusion column, 42-telescopic assembly, 421-vertical rod, 422-sliding block, 423-lower rotating rod, 424-extrusion spring, 5-corrosion detection probe, 6-cleaning cylinder, 61-upper cylinder, 62-bottom cover, 7-brush, 8-control mechanism, 81-positioning assembly, 811-connecting rod, 812-bearing plate, 813-guiding groove, 814-guiding strip, 82-transmission assembly, 821-cross plate, 822-limiting groove, 823-stand column, 824-control disc, 825-limiting column, 826-vertical plate, 827-first transmission shaft, 828-first driving helical tooth disc, 829-first driven helical tooth disc, 8210-second transmission shaft, 8211-second driving helical tooth disc, 8212-second driven helical tooth disc, 8213-synchronous tooth disc, 8214-synchronous belt, 9-blowing mechanism, 91-blowing pipe, 911-blowing port, 92-blowing assembly, 921-baffle, 922-air bag, 923-pressing plate, 924-air guide pipe, 10-counterweight, 11- chip removal hole. DETAILED DESCRIPTION

[0021] It should be noted that the embodiments in the present application and the features in the embodiments can be combined with each other without conflict.

[0022] The specific implementation of the present application is described in detail below in combination with specific embodiments.

[0023] For example, Figure 1 , Figure 2 , Figure 4 , Figure 6As shown, it is a structure diagram of a bridge cable corrosion detection equipment provided by one embodiment of the application, including box 1, the box 1 is composed of upper box 11 and lower box 12, the upper box 11 and the lower box 12 are hinged connection, the upper box 11 and the lower box 12 are provided with first fastener on the surface, the two side walls opposite to the upper box 11 and the lower box 12 are provided with through hole 2 respectively, two groups of upper rotating rods 3 distributed oppositely are rotatably installed in the inner cavity of the upper box 11, the rolling column 31 is fixedly installed in the middle of the upper rotating rod 3, one end of the upper rotating rod 3 extends to the outside of the upper box 11 and is connected with the motor 32, the clamping mechanism 4 matched with the rolling column 31 is arranged in the inner cavity of the lower box 12, the clamping mechanism 4 includes extrusion column 41 and telescopic assembly 42, the telescopic assembly 42 is located in the lower box 12 and connected with the extrusion column 41, the telescopic assembly 42 is used to control the extrusion column 41 to be below the rolling column 31, the extrusion column 41 and the rolling column 31 are respectively provided with annular cable grooves on the surface, a plurality of corrosion detection probes 5 are fixedly installed in the inner cavities of the upper box 11 and the lower box 12, a cleaning cylinder 6 is arranged in the inner cavity of the box 1, the cleaning cylinder 6 is composed of upper cylinder 61 and bottom cover 62, the longitudinal section of the upper cylinder 61 is annular structure with notch at the bottom, the bottom cover 62 is hinged to the bottom of the upper cylinder 61, the second fastener matched with the upper cylinder 61 is arranged on the surface of the bottom cover 62, a plurality of evenly distributed brushes 7 are arranged on the inner side walls of the upper cylinder 61 and the bottom cover 62, a control mechanism 8 matched with the cleaning cylinder 6 is arranged in the inner cavity of the upper box 11, the control mechanism 8 includes positioning assembly 81 and transmission assembly 82, the positioning assembly 81 is located on the inner side wall of the upper box 11 and connected with the upper cylinder 61, the positioning assembly 81 is used to support the cleaning cylinder 6 in the inner cavity of the box 1, the transmission assembly 82 is located in the inner cavity of the upper box 11 and connected with the cleaning cylinder 6, the transmission assembly 82 controls the cleaning cylinder 6 to reciprocate in the inner cavity of the box 1 by cooperating with the positioning assembly 81, a blowing mechanism 9 is arranged in the inner cavity of the box 1, the blowing mechanism 9 includes blowing pipe 91 and air blowing assembly 92, the blowing pipe 91 is flexible structure and fixedly installed on the inner side wall of the cleaning cylinder 6, a plurality of evenly distributed blowing ports 911 are arranged on the surface of the blowing pipe 91, the air blowing assembly 92 is located in the inner cavity of the upper box 12 and communicated with the blowing pipe 91.

[0024] In use, the upper box body 11 and the lower box body 12 are rotated and separated from each other, the bottom cover 62 at the bottom of the upper cylinder 61 is rotated to make the bottom of the upper cylinder 61 into an open state, the upper cylinder 61 is sleeved outside the stayed cable, the bottom cover 62 at the bottom of the upper cylinder 61 is fixed again through the second fastener, the upper box body 11 and the lower box body 12 are fixed through the first fastener, at this time, the stayed cable is between the extrusion column 41 and the rolling column 31, the stretching assembly 42 applies a pushing force to the extrusion column 41, the extrusion column 41 cooperates with the rolling column 31, and the stayed cable can be stably clamped, the motor 32 drives the upper rotating rod 3 to rotate and then drives the rolling column 31 to rotate synchronously, the rolling column 31 drives the box body 1 and the cleaning cylinder 6 to move along the surface of the stayed cable during rotation, the box body 1 drives the rust detection probe 5 to move synchronously when moving along the surface of the stayed cable, and a plurality of groups of rust detection probes 5 can detect the rust condition of the surface of the stayed cable in all directions. Before detection, the transmission assembly 82 cooperates with the positioning assembly 81 to control the cleaning cylinder 6 to reciprocatingly move on the outside of the stayed cable with a small amplitude, the cleaning cylinder 6 drives the brush 7 to move synchronously, the brush 7 can automatically clean the impurities attached to the surface of the stayed cable, the cleaning cylinder 6 reciprocatingly moves, the air blowing assembly 92 continuously sends high-pressure air to the blowing pipe 91, and the air blowing nozzles 911 on the surface of the blowing pipe 91 blow the high-pressure air to the surface of the stayed cable, so that the impurities on the surface of the stayed cable after cleaning can be completely cleaned. After the impurities on the surface of the stayed cable are cleaned, the detection precision of the rust detection probe 5 can be effectively improved.

[0025] As shown in Figure 2 , Figure 3 , Figure 4 illustrated, as a preferred embodiment of the present application, the stretching assembly 42 comprises the vertical rods 421 fixedly installed around the inner cavity of the lower box body 12, the sliding blocks 422 are vertically and slidingly installed on the surfaces of the vertical rods 421, the lower rotating rods 423 are commonly and rotatably installed on the two groups of sliding blocks 422 that are oppositely distributed, the extrusion column 41 is fixedly installed in the middle portion of the lower rotating rod 423, the extrusion spring 424 is fixedly installed on the inner bottom wall of the lower box body 12, surrounds the outside of the vertical rods 421 and is connected with the bottom wall of the sliding block 422.

[0026] The two groups of sliding blocks 422 cooperate with each other to position the lower rotating rod 423, the lower rotating rod 423 supports and positions the extrusion column 41, the extrusion spring 424 applies an upward pushing force to the sliding block 422, and the sliding block 422 cooperates with the lower rotating rod 423 to synchronously apply an upward pushing force to the extrusion column 41. The stayed cable is located in the groove between the extrusion column 41 and the rolling column 31, and the extrusion column 41 cooperates with the rolling column 31 to stably clamp and position the stayed cable.

[0027] As shown in Figure 2 , Figure 3 , Figure 4、 Figure 6 As shown in the drawings, as a preferred embodiment of the present application, the positioning assembly 81 comprises a plurality of connecting rods 811 fixedly installed on the inner side wall of the upper box body 11, and the plurality of connecting rods 811 are fixedly installed together with an arc-shaped bearing plate 812. The upper cylinder body 61 is attached to the surface of the bearing plate 812. A plurality of guide grooves 813 are formed on the surface of the bearing plate 812. The side wall of the upper cylinder body 61 is fixedly installed with a guide strip 814 in sliding connection with the guide grooves 813.

[0028] The connecting rods 811 support and position the bearing plate 812 in the inner cavity of the upper box body 11. The guide grooves 813 and the guide strip 814 cooperate with each other to synchronously support and position the cleaning cylinder 6 at the side wall of the bearing plate 812. The stay rope is in the inner cavity of the cleaning cylinder 6. The guide strip 814 slides in the guide groove 8. The transmission assembly 82 controls the small-amplitude reciprocating movement of the cleaning cylinder 6 at the side wall of the bearing plate 812. The cleaning cylinder 6 drives the brush 7 to move synchronously. The brush 7 can automatically clean the impurities attached to the surface of the stay rope in all directions.

[0029] As shown in the drawings, Figure 2 、 Figure 3 、 Figure 4 、 Figure 5 、 Figure 6 As shown in the drawings, as a preferred embodiment of the present application, the transmission assembly 82 comprises a horizontal plate 821 fixedly installed on the top of the upper cylinder body 61. A limiting groove 822 is formed on the surface of the horizontal plate 821. A stand 823 is rotatably installed on the inner top wall of the upper box body 11. A control disc 824 is fixedly installed above the horizontal plate 821 at the bottom end of the stand 823. A limiting column 825 is arranged at a position deviating from the center of the surface of the control disc 824. The limiting column 825 is inserted into the limiting groove 822. Two groups of vertical plates 826 are fixedly installed on the inner top wall of the upper box body 11 in opposite distribution. The two groups of vertical plates 826 are rotatably installed together with a first transmission shaft 827. A first driving helical gear disc 828 is fixedly installed at one end of the first transmission shaft 827 facing the stand 823. A first driven helical gear disc 829 is fixedly installed on the surface of the stand 823 in meshing connection with the first driving helical gear disc 828. A second transmission shaft 8210 is rotatably installed in the inner cavity of the upper box body 11. A second driven helical gear disc 8212 is fixedly installed at one end of the first transmission shaft 827 facing the second transmission shaft 8210. A second driving helical gear disc 8211 is fixedly installed on the surface of the second transmission shaft 8210 in meshing connection with the second driven helical gear disc 8212. The second transmission shaft 8210 and the surface of one group of upper rotating rods 3 are respectively fixedly installed with synchronous gear discs 8213. The two groups of synchronous gear discs 8213 are connected together with a synchronous belt 8214.

[0030] The motor 32 drives the upper rotating rod 3 to rotate, and then drives the synchronous toothed disc 8213 to rotate synchronously. The two groups of synchronous toothed discs 8213 and the synchronous belt 8214 are matched with each other, so that the second transmission shaft 8210 can be driven to rotate. The second transmission shaft 8210 drives the second driving bevel gear 8211 to rotate. The second driving bevel gear 8211 is in meshing transmission with the second driven bevel gear 8212, so that the first transmission shaft 827 can be driven to rotate. The first transmission shaft 827 drives the first driving bevel gear 828 to rotate. The first driving bevel gear 828 is in meshing transmission with the first driven bevel gear 829, so that the vertical column 823 can be driven to rotate. The vertical column 823 drives the control disc 824 to rotate. The control disc 824 drives the limiting column 825 to rotate synchronously. The limiting column 825 and the limiting groove 822 are matched with each other, so that the horizontal plate 821 and the cleaning barrel 6 can be driven to move reciprocatingly in a small range.

[0031] As shown in Figure 2 、 Figure 4 、 Figure 6 illustrated, as a preferred embodiment of the present application, the air blowing assembly 92 comprises a baffle 921 fixedly installed in the inner cavity of the upper box body 11. The surface of the baffle 921 is fixedly installed with an air bag 922. The surface of the air bag 922 is fixedly installed with an air guide pipe 924. One end of the air guide pipe 924 away from the air bag 922 is connected with the blowing pipe 91. The surface of the upper barrel body 61 is fixedly installed with a pressing plate 923 matched with the air bag 922.

[0032] The cleaning barrel 6 drives the pressing plate 923 to move synchronously when moving reciprocatingly. The pressing plate 923 moves towards the air bag 922 and extrudes the air bag 922. The air bag 922 and the air guide pipe 924 are matched with each other, so that high-pressure air can be generated and delivered into the blowing pipe 91. The high-pressure air is blown to the surface of the cable-stayed cable through the blowing port 911, so that the impurities attached to the surface of the cable-stayed cable can be swept and treated comprehensively.

[0033] As shown in Figure 1 、 Figure 2 illustrated, as a preferred embodiment of the present application, the bottom wall of the lower box body 12 is fixedly installed with a counterweight 10.

[0034] As shown in Figure 1 、 Figure 2 、 Figure 6 illustrated, as a preferred embodiment of the present application, the surface of the bottom cover 62 is provided with a plurality of evenly distributed chip removal holes 11.

[0035] The working principle of the present application is: in use, the upper box body 11 and the lower box body 12 are rotated and separated from each other, the bottom cover 62 at the bottom of the upper cylinder 61 is rotated to make the bottom of the upper cylinder 61 open, the upper cylinder 61 is sleeved outside the stay cable, the bottom cover 62 at the bottom of the upper cylinder 61 is fixed again through the second fastener, the upper box body 11 and the lower box body 12 are fixed through the first fastener, at this time the stay cable is between the extrusion column 41 and the rolling column 31, the sliding block 422 is pushed upward by the extrusion spring 424, the sliding block 422 cooperates with the lower rotating rod 423 to synchronously apply an upward thrust to the extrusion column 41, the stay cable is in the cable groove between the extrusion column 41 and the rolling column 31, the extrusion column 41 cooperates with the rolling column 31 to stably clamp and position the stay cable. The motor 32 drives the upper rotating rod 3 to rotate and synchronously rotate the rolling column 31, the rolling column 31 drives the box body 1 and the cleaning cylinder 6 to move along the surface of the stay cable when rotating, the box body 1 drives the rust detection probe 5 to move synchronously when moving along the surface of the stay cable, and a plurality of groups of rust detection probes 5 can comprehensively detect the rust condition of the surface of the stay cable.

[0036] Before detection, the upper rotating rod 3 rotates to drive the synchronous toothed disc 8213 to rotate synchronously, the two groups of synchronous toothed discs 8213 cooperate with the synchronous belt 8214 to drive the second transmission shaft 8210 to rotate, the second transmission shaft 8210 drives the second driving bevel gear 8211 to rotate, the second driving bevel gear 8211 meshes with the second driven bevel gear 8212 to drive the first transmission shaft 827 to rotate, the first transmission shaft 827 drives the first driving bevel gear 828 to rotate, the first driving bevel gear 828 meshes with the first driven bevel gear 829 to drive the vertical column 823 to rotate, the vertical column 823 drives the control disc 824 to rotate, the control disc 824 drives the limiting column 825 to rotate synchronously, the limiting column 825 cooperates with the limiting groove 822 to drive the horizontal plate 821 and the cleaning cylinder 6 to move back and forth in a small amplitude. The cleaning cylinder 6 drives the brush 7 to move synchronously, the brush 7 can automatically clean the impurities attached to the surface of the stay cable, the cleaning cylinder 6 drives the pressing plate 923 to move synchronously when moving back and forth, the pressing plate 923 moves towards the air bag 922 to extrude the air bag 922, the air bag 922 cooperates with the air guide pipe 924 to generate high-pressure air and convey the high-pressure air into the blowing pipe 91, the blowing port 911 on the surface of the blowing pipe 91 blows the high-pressure air to the surface of the stay cable, and the impurities on the surface of the stay cable after being completely cleaned can be completely cleaned. After the impurities on the surface of the stay cable are cleaned, the detection precision of the rust detection probe 5 can be effectively improved.

[0037] The preferred embodiments of the present application are described in detail above, but the present application is not limited to the above-described embodiments, and various changes can be made within the knowledge of those skilled in the art without departing from the purpose of the present application.

Claims

1. A bridge stay cable corrosion detection apparatus comprising a case, characterized by, The box is composed of an upper box and a lower box, the upper box and the lower box are hingedly connected, the upper box and the lower box are provided with first fasteners on surfaces, opposite two side walls of the upper box and the lower box are respectively provided with through holes, two groups of oppositely distributed upper rotating rods are rotatably installed in an inner cavity of the upper box, a rolling column is fixedly installed at a middle portion of the upper rotating rod, one end of the upper rotating rod extends to an outer side of the upper box and is connected with a motor, a clamping mechanism that cooperates with the rolling column is arranged in the inner cavity of the lower box, the clamping mechanism comprises an extrusion column and a telescopic assembly, the telescopic assembly is located in the inner cavity of the lower box and is connected with the extrusion column, the telescopic assembly is used to control the extrusion column to be directly below the rolling column, the extrusion column and the rolling column are respectively provided with annular grooves, a plurality of rust detection probes are directly fixedly installed in the inner cavities of the upper box and the lower box, a cleaning cylinder is arranged in the inner cavity of the box, the cleaning cylinder is composed of an upper cylinder and a bottom cover, a longitudinal section of the upper cylinder is an annular structure with a notch at a bottom portion, the bottom cover is hingedly connected to the bottom portion of the upper cylinder, the bottom cover is provided with second fasteners that cooperate with the upper cylinder, a plurality of uniformly distributed brushes are arranged on inner side walls of the upper cylinder and the bottom cover, a control mechanism that cooperates with the cleaning cylinder is arranged in the inner cavity of the upper box, the control mechanism comprises a positioning assembly and a transmission assembly, the positioning assembly is located on the inner side wall of the upper box and is connected with the upper cylinder, the positioning assembly is used to support the cleaning cylinder in the inner cavity of the box, the transmission assembly is located in the inner cavity of the upper box and is connected with the cleaning cylinder, the transmission assembly controls the cleaning cylinder to reciprocatingly move in the inner cavity of the box in a manner of cooperating with the positioning assembly, a blowing mechanism is arranged in the inner cavity of the box, the blowing mechanism comprises a blowing pipe and a blowing assembly, the blowing pipe is a flexible structure and is fixedly installed at an inner side wall of the cleaning cylinder, a plurality of uniformly distributed blowing ports are arranged on a surface of the blowing pipe, the blowing assembly is located in the inner cavity of the upper box and is connected with the blowing pipe.

2. The bridge stay cable corrosion detection apparatus according to claim 1, characterized by, The telescopic assembly comprises vertical rods that are fixedly installed around the inner cavity of the lower box, sliding blocks are slidingly installed on surfaces of the vertical rods in a vertical direction, two groups of oppositely distributed sliding blocks are commonly rotatably installed with lower rotating rods, the extrusion column is fixedly installed at a middle portion of the lower rotating rod, an extrusion spring is fixedly installed on a bottom wall of the inner cavity of the lower box, the extrusion spring surrounds the outer side of the vertical rod and is connected with the bottom wall of the sliding block.

3. The bridge stay cable corrosion detection apparatus according to claim 1, characterized by, The positioning assembly comprises a plurality of connecting rods that are fixedly installed on the inner side wall of the upper box, an arc-shaped bearing plate is commonly fixedly installed with the plurality of connecting rods, the upper cylinder is attached to the surface of the bearing plate, a plurality of guide grooves are arranged on the surface of the bearing plate, guide strips that are slidingly connected with the guide grooves are fixedly installed on the side wall of the upper cylinder.

4. The bridge stay cable corrosion detection apparatus according to claim 3, characterized by, The transmission assembly includes a transverse plate fixedly installed at the top of the upper cylinder, the surface of the transverse plate is provided with a limiting groove, a stand is rotatably installed on the inner top wall of the upper box body, the bottom end of the stand is fixedly installed with a control disc above the transverse plate, a limiting column is arranged on the surface of the control disc deviated from the center, the limiting column is inserted into the limiting groove, two groups of vertical plates are fixedly installed on the inner top wall of the upper box body and are oppositely distributed, the first transmission shaft is rotatably installed on the two groups of vertical plates, the first driving helical gear plate is fixedly installed on one end of the first transmission shaft facing the stand, the first driven helical gear plate is fixedly installed on the surface of the stand and is meshed and connected with the first driving helical gear plate, the second transmission shaft is rotatably installed in the inner cavity of the upper box body, the second driven helical gear plate is fixedly installed on one end of the first transmission shaft facing the second transmission shaft, the second driving helical gear plate is fixedly installed on the surface of the second transmission shaft and is meshed and connected with the second driven helical gear plate, the synchronous gear plates are fixedly installed on the surface of the second transmission shaft and one group of upper rotating rods respectively, and the two groups of synchronous gear plates are commonly connected with a synchronous belt.

5. The bridge stay cable corrosion detection apparatus according to claim 1, characterized by, The air blowing assembly includes a baffle fixedly installed in the inner cavity of the upper box body, the surface of the baffle is fixedly installed with an air bag, the surface of the air bag is fixedly installed with an air guide pipe, one end of the air guide pipe away from the air bag is communicated with a blowing pipe, and the surface of the upper cylinder is fixedly installed with a pressing plate matched with the air bag.

6. The bridge stay cable corrosion detection apparatus according to claim 1, characterized by, The counterweight is fixedly installed on the bottom wall of the lower box body.

7. The bridge stay cable corrosion detection apparatus according to claim 1, characterized by, The surface of the bottom cover is provided with a plurality of evenly distributed chip removal holes.

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