Bridge crack detection device

Abstract

The invention relates to the technical field of detection devices, and discloses a bridge crack detection device which comprises a fixed seat, the fixed seat is of an L-shaped structure, the front and back of the outer wall of the vertical part of the fixed seat are connected with guide rods, the guide rods are sleeved with sliding sleeves, a lifting table is connected between the two sliding sleeves, and the bottom of the lifting table is connected with two vertical rods. The lower ends of the two vertical rods are jointly connected with a transfer table, square holes are formed in the front portion and the rear portion of the transfer table, rectangular frames are inserted into the square holes, the left side of the inner wall of each rectangular frame is connected with a side support, the right portion of each side support is rotationally connected with a hollow pipe, the outer wall of each hollow pipe is connected with a steering shell, and image acquisition equipment is installed on the bottom wall of each steering shell. The bridge crack detection device is reasonable in structural design, can meet two detection environments of the bridge surface and the bridge bottom surface, has more comprehensive functions, can guarantee the crack image acquisition effect, and meets the crack detection requirements of different positions of a bridge.

Description

Technical Field

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

[0002] A bridge generally refers to a structure erected over rivers, lakes and seas to enable vehicles, pedestrians, etc. to pass smoothly. To adapt to the modern rapidly developing transportation industry, a bridge is also extended to a building that is erected across mountain streams, poor geological conditions or to meet other traffic needs to make passage more convenient. With the continuous development of technology, the construction technology of road bridges has also made rapid progress, which has also promoted the booming development of basic projects such as road bridges, providing a solid material guarantee for China's transportation industry.

[0003] At present, road bridges generally consist of several major parts such as subgrade, pavement, bridge, tunnel engineering and traffic engineering facilities. Staff will regularly detect bridge cracks. In the prior art, the staff hold instruments to detect bridge cracks by hand. People hold the instruments with their hands for a long time, resulting in high labor intensity and sore hands, thus reducing work efficiency.

[0004] Those skilled in the art have conducted research and improvement on this. For example, a road bridge crack detection device proposed in the application number CN201921963639.4. This technical solution enables the moving plate to move on the outer surface of the lead screw through the combined use of a servo motor, a lead screw and a limiting rod, facilitating the detection of cracks at different positions of the bridge. However, this technical solution can only detect cracks on the bridge deck and cannot achieve good detection effects on cracks generated by the stress at the bottom of the bridge. Therefore, we propose a bridge crack detection device. Summary of the Invention

[0005] The purpose of the present invention is to provide a bridge crack detection device to overcome the technical problems existing in the prior art.

[0006] To achieve the above technical purpose and reach the above technical effect, the present invention provides the following technical solution:

[0007] A bridge crack detection device includes a fixed seat. The fixed seat is arranged in an L-shaped structure. Guide rods are connected to the front and rear outer walls of the vertical part of the fixed seat. A sliding sleeve is sleeved outside the guide rod. An elevating platform is connected between the two sliding sleeves. Two vertical rods are connected to the bottom of the elevating platform. The lower ends of the two vertical rods are jointly connected to a transfer platform. Square holes are opened in the front and rear parts of the transfer platform. A rectangular frame is inserted into the square holes. A side bracket is connected to the left inner wall of the rectangular frame. A hollow tube is rotatably connected to the right part of the side bracket. A steering shell is connected to the outer wall of the hollow tube. An image acquisition device is installed on the bottom wall of the steering shell.

[0008] Preferably, in a bridge crack detection device, a circular through-hole is provided in the horizontal portion of the fixed seat. The top wall of the horizontal portion of the fixed seat is connected with a receiving frame. The four corners of the top of the receiving frame are connected with hanging rings. A water tank is installed in the receiving frame. The front end face of the receiving frame is connected with a storage battery and a controller. The controller is built-in with a wireless module. The right end face of the receiving frame is connected with a vertical slide rail. A slider is slidably connected in the vertical slide rail. The outer wall of the slider is connected with a vertical arm.

[0009] Preferably, in a bridge crack detection device, a protective shell is connected to the front side wall of the side bracket. A steering motor is connected to the left end of the protective shell. A worm is connected to the right output end of the steering motor. A worm gear is connected to the front part of the outer wall of the hollow tube. The worm gear is meshed and connected with the worm. Both the worm gear and the worm are located in the protective shell. The front end of the hollow tube is rotatably connected with a joint pipe through a sealing bearing. The right end of the joint pipe extends out of the protective shell.

[0010] Preferably, in a bridge crack detection device, a conveying motor is connected to the right end of the turntable. A horizontal lead screw is connected to the right output end of the conveying motor. The right end of the horizontal lead screw is rotatably connected to the vertical arm through a bearing. A nut seat is screwed on the outer wall of the horizontal lead screw. A rectangular frame is fixedly connected to the upper end of the nut seat. An L-shaped pipe penetrates through the turntable. A liquid pumping pump is installed in the L-shaped pipe. A corrugated pipe is communicated between the horizontal end of the L-shaped pipe and the joint pipe. A main water pipe is communicated between the water tank and the vertical end of the L-shaped pipe. The main water pipe penetrates through the circular through-hole.

[0011] Preferably, in a bridge crack detection device, two support rods are movably inserted into the upper end of the steering shell. A metal plate is jointly connected to the lower ends of the two support rods. An electromagnet is connected to the top of the inner cavity of the steering shell. A cover body is jointly connected to the upper ends of the two support rods. A compression spring is sleeved on the lower part of the outer wall of the support rod. A cleaning motor is connected to the center of the bottom of the cover body. A cleaning brush is connected to the top output end of the cleaning motor.

[0012] Preferably, in a bridge crack detection device, a plurality of spray heads are installed on the inner wall of the cover body. The output end of the spray head is inclined towards the cleaning brush. A spray pipe is connected to the outer wall of the cover body. The input end of the spray head is communicated with the spray pipe. A water supply pipe is communicated between the spray pipe and the rear end of the hollow tube. Lighting lamps are installed on the left and right sides of the bottom wall of the steering shell.

[0013] Preferably, in a bridge crack detection device, T-shaped grooves are provided at the front and rear ends of the horizontal part of the fixed seat. An I-shaped bar is inserted into the T-shaped groove. The right ends of the two I-shaped bars are jointly connected to a strip-shaped plate. A fastening bolt is installed in the middle of the strip-shaped plate. A threaded hole is provided at the right end of the horizontal part of the fixed seat. Oblique support rods are connected to the left and right of the outer wall of the I-shaped bar. A moving wheel is installed at the lower end of the oblique support rod. A reinforcing rib is connected between adjacent two oblique support rods.

[0014] Preferably, in a bridge crack detection device, an extension seat is connected to the bottom of the outer wall of the vertical part of the fixed seat. A hydraulic rod is connected between the extension seat and the lifting platform. A driving motor is connected to the left end of the extension seat. The top output end of the driving motor is connected to a spur gear.

[0015] Preferably, in a bridge crack detection device, it further includes an I-shaped rail fixed on the side of the bridge. Tooth grooves are provided on the outer wall of the I-shaped rail. The tooth grooves are meshed and connected with the spur gear. Two walking frames are slidably connected to the I-shaped rail. Guide wheels are installed at the upper and lower ends of the walking frame. A linkage frame is connected to the outer wall of the walking frame. A plurality of insertion blocks are connected to the closer sides of the two linkage frames. A positioning hole is provided at the center of the insertion block.

[0016] Preferably, in a bridge crack detection device, the plurality of insertion blocks are equidistantly distributed in the height direction. Opposite interfaces matching the insertion blocks are provided at the front and rear of the vertical part of the fixed seat. A positioning rod is jointly inserted into the opposite interfaces on the same side. The positioning rod penetrates through the positioning hole.

[0017] Compared with the prior art, the beneficial effects of the present invention are:

[0018] 1. The structure of the present invention is reasonably designed. The linkage frame and the I-shaped bar are detachably installed, which can meet the two detection environments of the bridge surface and the bridge bottom surface, and the function is more comprehensive;

[0019] 2. The present invention uses a hydraulic rod to adjust the position of the lifting platform, which can control the distance between the image acquisition device and the detection surface. Using a cleaning brush and a nozzle to clean the detection surface can ensure the crack image acquisition effect;

[0020] 3. The present invention drives the horizontal lead screw to rotate through a conveying motor, and the nut seat can drive the rectangular frame to move horizontally, which is convenient to adjust the detection working range of the image acquisition device and meet the crack detection requirements of different positions of the bridge;

[0021] 4. In the present invention, the turntable and the vertical arm are lifted synchronously, which avoids the inclination of the horizontal lead screw, ensures the stable translation of the rectangular frame, and ensures the stability of the equipment operation. Description of the Drawings

[0022] To more clearly illustrate the technical solution of the present invention, the following will briefly introduce the drawings required for use in the description of the specific embodiments. Obviously, the drawings in the following description are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can be obtained based on these drawings.

[0023] Figure 1 Schematic diagram of the overall structure of the present invention Figure 1 ;

[0024] Figure 2 Schematic diagram of the overall structure of the present invention Figure 2 ;

[0025] Figure 3 Schematic diagram of the structure of the fixed seat in the present invention;

[0026] Figure 4 Schematic diagram of the structure of the accommodation frame in the present invention;

[0027] Figure 5 Schematic diagram of the structure of the rectangular frame in the present invention;

[0028] Figure 6 Top view schematic diagram of the hollow tube in the present invention;

[0029] Figure 7 Side view schematic diagram of the cover body in the present invention;

[0030] Figure 8 Schematic diagram of the structure of the lifting platform in the present invention;

[0031] Figure 9 Schematic diagram of the structure of the transfer platform in the present invention;

[0032] Figure 10 Schematic diagram of the structure of the I-shaped bar in the present invention;

[0033] Figure 11 Schematic diagram of the structure of the linkage frame in the present invention;

[0034] Figure 12 Schematic diagram of the structure of the I-shaped rail in the present invention.

[0035] In the figure: 1, fixed seat; 2, guide rod; 3, sliding sleeve; 4, lifting platform; 5, vertical rod; 6, transfer platform; 7, square hole; 8, rectangular frame; 9, side bracket; 10, hollow tube; 11, steering shell; 12, image acquisition device; 13, I-shaped rail;

[0036] 101, Circular through-hole; 102, Accommodating frame; 103, Suspension ring; 104, Water tank; 105, Storage battery; 106, Controller; 107, Wireless module; 108, Vertical slide rail; 109, Slide block; 110, Vertical arm;

[0037] 111, T-shaped groove; 112, I-shaped bar; 113, Strip plate; 114, Fastening bolt; 115, Threaded hole; 116, Inclined support rod; 117, Movable wheel; 118, Reinforcing rib;

[0038] 121, Extension seat; 122, Hydraulic rod; 123, Driving motor; 124, Straight gear;

[0039] 131, Tooth groove; 132, Walking frame; 133, Guide wheel; 134, Linkage frame; 135, Insert block; 136, Positioning hole; 137, Docking port; 138, Positioning rod;

[0040] 601, Conveyor motor; 602, Horizontal lead screw; 603, Nut seat; 604, L-shaped pipe; 605, Liquid extraction pump; 606, Bellows; 607, Main water pipe;

[0041] 901, Protective shell; 902, Steering motor; 903, Worm; 904, Worm gear; 905, Connector pipe;

[0042] 1101, Support rod; 1102, Metal plate; 1103, Electromagnet; 1104, Cover body; 1105, Compression spring; 1106, Cleaning motor; 1107, Cleaning brush; 1108, Lighting lamp;

[0043] 1141, Sprinkler head; 1142, Spraying pipe; 1143, Water supply pipe. Detailed implementation manners

[0044] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0045] Embodiment 1

[0046] Please refer to Figure 1-12As shown in the figure, this embodiment is a bridge crack detection device, including a fixed seat 1. The fixed seat 1 is arranged in an L-shaped structure. Guide rods 2 are connected to the front and rear outer walls of the vertical part of the fixed seat 1. A sliding sleeve 3 is sleeved outside the guide rod 2. A lifting platform 4 is connected between the two sliding sleeves 3. Two vertical rods 5 are connected to the bottom of the lifting platform 4. The lower ends of the two vertical rods 5 are jointly connected to a transfer platform 6. Square holes 7 are opened in the front and rear parts of the transfer platform 6. A rectangular frame 8 is inserted into the square holes 7. A side bracket 9 is connected to the left inner wall of the rectangular frame 8. A hollow tube 10 is rotatably connected to the right part of the side bracket 9. A steering shell 11 is connected to the outer wall of the hollow tube 10. An image acquisition device 12 is installed on the bottom wall of the steering shell 11 to perform image acquisition and data transmission on the crack.

[0047] A circular through hole 101 is opened in the horizontal part of the fixed seat 1. A receiving frame 102 is connected to the top wall of the horizontal part of the fixed seat 1. Suspension rings 103 are connected to the four corners of the top of the receiving frame 102. A water tank 104 is installed in the receiving frame 102. A storage battery 105 and a controller 106 are connected to the front end face of the receiving frame 102. A wireless module 107 is built into the controller 106. A vertical slide rail 108 is connected to the right end face of the receiving frame 102. A slider 109 is slidably connected in the vertical slide rail 108. A vertical arm 110 is connected to the outer wall of the slider 109.

[0048] A protective shell 901 is connected to the front side wall of the side bracket 9. A steering motor 902 is connected to the left end of the protective shell 901. A worm 903 is connected to the right output end of the steering motor 902. A worm gear 904 is connected to the front outer wall of the hollow tube 10. The worm gear 904 is meshed with the worm 903. Both the worm gear 904 and the worm 903 are located inside the protective shell 901. The front end of the hollow tube 10 is rotatably connected to a joint pipe 905 through a sealed bearing. The right end of the joint pipe 905 extends out of the protective shell 901.

[0049] The specific implementation method of this embodiment is as follows:

[0050] In this embodiment, the storage battery 105 is used for power supply. The controller 106 is used to control the operation of each electrical component in the device. The wireless module 107 is used to externally connect a mobile terminal, which is convenient for realizing remote control and data transmission. The sliding sleeve 3 is used in cooperation with the guide rod 2 for limit guidance, which is convenient for the lifting platform 4 to complete vertical lifting. The vertical rod 5 moves synchronously with the lifting platform 4, thereby adjusting the distance between the rectangular frame 8 and the detection surface. The steering motor 902 drives the worm 903 to rotate. The worm 903 meshes with and drives the worm gear 904, so that the hollow tube 10 drives the steering shell 11 to deflect, which is convenient for adjusting the position of the image acquisition device 12 and can be applied to two different detection environments, namely the bridge surface and the bridge bottom surface.

[0051] Embodiment Two

[0052] On the basis of Embodiment 1, a conveying motor 601 is connected to the right end of the transfer table 6. The right output end of the conveying motor 601 is connected to a horizontal lead screw 602. The right end of the horizontal lead screw 602 is rotatably connected to the vertical arm 110 through a bearing. A nut seat 603 is screwed on the outer wall of the horizontal lead screw 602. The upper end of the nut seat 603 is fixedly connected to a rectangular frame 8. The horizontal position of the rectangular frame 8 is adjustable. An L-shaped pipe 604 penetrates through the transfer table 6. A liquid extraction pump 605 is installed in the L-shaped pipe 604. A corrugated pipe 606 is connected between the horizontal end of the L-shaped pipe 604 and the joint pipe 905. A main water pipe 607 is connected between the water tank 104 and the vertical end of the L-shaped pipe 604. The main water pipe 607 penetrates through the circular through hole 101 to facilitate water flow transportation.

[0053] Two support rods 1101 are movably inserted into the upper end of the steering shell 11. The lower ends of the two support rods 1101 are jointly connected to a metal plate 1102. An electromagnet 1103 is connected to the top of the inner cavity of the steering shell 11. The upper ends of the two support rods 1101 are jointly connected to a cover body 1104 to collect and clean sewage during bridge bottom inspection. A compression spring 1105 is sleeved on the lower part of the outer wall of the support rod 1101. A cleaning motor 1106 is connected to the center of the bottom of the cover body 1104. The top output end of the cleaning motor 1106 is connected to a cleaning brush 1107.

[0054] A plurality of nozzles 1141 are installed on the inner wall of the cover body 1104. The output ends of the nozzles 1141 are inclined towards the cleaning brush 1107. A spray pipe 1142 is connected to the outer wall of the cover body 1104. The input ends of the nozzles 1141 communicate with the spray pipe 1142. A water supply pipe 1143 is connected between the spray pipe 1142 and the rear end of the hollow pipe 10. Lighting lamps 1108 are installed on the left and right sides of the bottom wall of the steering shell 11.

[0055] The specific implementation method of this embodiment is as follows:

[0056] In this embodiment, the conveying motor 601 drives the horizontal lead screw 602 to rotate. The nut seat 603 can drive the rectangular frame 8 to move horizontally, facilitating the adjustment of the detection working range of the image acquisition device 12 to meet the crack detection requirements at different positions of the bridge. The right end of the horizontal lead screw 602 is rotatably connected to the vertical arm 110 through a bearing. The slider 109 at the upper end of the vertical arm 110 can slide in the vertical slide rail 108. The transfer table 6 and the vertical arm 110 are lifted and lowered synchronously to prevent the horizontal lead screw 602 from tilting and ensure the stable operation of the equipment;

[0057] When performing bridge crack detection, first bring the cover body 1104 close to the detection surface. Use the electromagnet 1103 to adsorb the metal plate 1102 by energization. The support rod 1101 drives the cover body 1104 to move and fit the detection surface. Use the cleaning motor 1106 to drive the cleaning brush 1107 to rotate and clean the dust on the crack surface. Use the liquid pumping pump 605 to extract water flow. The water flow enters the nozzle 1141 along the route of the water tank 104 - main water pipe 607 - L-shaped pipe 604 - corrugated pipe 606 - joint pipe 905 - hollow pipe 10 - water supply pipe 1143 - spray pipe 1142, which can wash the cleaning brush 1107 and further improve the cleaning effect. After the cleaning is completed, control the steering of the steering shell 11 to make the image acquisition device 12 face the crack for image acquisition and transmit the data to the mobile device. The lighting lamp 1108 can enhance the field of vision brightness to ensure clear acquisition of images.

[0058] Embodiment Three

[0059] On the basis of Embodiment Two, at the bottom of the outer wall of the vertical part of the fixed seat 1, an extension seat 121 is connected. A hydraulic rod 122 is connected between the extension seat 121 and the lifting table 4, which is convenient for controlling the position of the lifting table 4. The left end of the extension seat 121 is connected with a driving motor 123, and the top output end of the driving motor 123 is connected with a spur gear 124.

[0060] T-shaped grooves 111 are opened at the front and rear ends of the horizontal part of the fixed seat 1. I-shaped bars 112 are inserted into the T-shaped grooves 111. The right ends of the two I-shaped bars 112 are jointly connected with a strip plate 113. A fastening bolt 114 is installed in the middle of the strip plate 113. A threaded hole 115 is opened at the right end of the horizontal part of the fixed seat 1. Oblique support rods 116 are connected to the left and right of the outer wall of the I-shaped bar 112. A moving wheel 117 is installed at the lower end of the oblique support rod 116. A reinforcing rib 118 is connected between adjacent two oblique support rods 116.

[0061] It also includes an I-shaped rail 13 fixed on the side of the bridge. A tooth groove 131 is opened on the outer wall of the I-shaped rail 13. The tooth groove 131 is meshed and connected with the spur gear 124 for use in detecting the bottom surface of the bridge. Two walking frames 132 are slidably connected to the I-shaped rail 13. Guide wheels 133 are installed at the upper and lower ends of the walking frame 132. A linkage frame 134 is connected to the outer wall of the walking frame 132. A plurality of insertion blocks 135 are connected to the closer sides of the two linkage frames 134. A positioning hole 136 is opened at the center of the insertion block 135.

[0062] A plurality of insertion blocks 135 are equidistantly distributed in the height direction. Opposite interfaces 137 matching the insertion blocks 135 are opened at the front and rear of the vertical part of the fixed seat 1. A positioning rod 138 is jointly inserted into the opposite interfaces 137 on the same side, and the positioning rod 138 penetrates through the positioning hole 136.

[0063] The specific implementation method of this embodiment is as follows:

[0064] In this embodiment, when detecting cracks on the bridge surface, the I-shaped bar 112 is inserted along the T-shaped groove 111 into the horizontal part of the fixed seat 1, and the strip-shaped plate 113 is attached to the horizontal end of the fixed seat 1. The fastening bolt 114 is used in cooperation with the threaded hole 115 for fixation. The structural strength of the inclined strut 116 is improved by the reinforcing rib 118. The moving wheel 117 can move on the bridge surface, facilitating the crack detection by the image acquisition device 12.

[0065] When detecting cracks on the bottom surface of the bridge, an external hoisting device moves the device between the two linkage frames 134 through the lifting ring 103. The distance between the two walking frames 132 is adjusted. After the insertion block 135 is inserted into the docking port 137, it is inserted into the positioning rod 138, and the positioning rod 138 passes through the positioning hole 136 to complete the installation. The driving motor 123 drives the spur gear 124 to rotate, and the spur gear 124 meshes with the tooth groove 131. The device can move along the I-shaped rail 13, and the crack detection on the bottom surface of the bridge can be realized by cooperating with the lateral movement of the rectangular frame 8.

[0066] In the description of this specification, the description with reference to terms such as "one embodiment", "example", "specific example", etc. means that the specific features, structures, materials or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in a suitable manner in any one or more embodiments or examples.

[0067] The preferred embodiments of the present invention disclosed above are only used to help illustrate the present invention. The preferred embodiments do not describe all the details in detail, nor do they limit the invention to the specific embodiments described. Obviously, many modifications and variations can be made according to the content of this specification. These embodiments are selected and specifically described in this specification to better explain the principles and practical applications of the present invention, so that those skilled in the relevant technical fields can understand and utilize the present invention well. The present invention is only limited by the claims and their full scope and equivalents.

Claims

1. A bridge crack detection device, comprising a fixed seat (1), characterized in that: The fixed seat (1) is arranged in an L-shaped structure. Guide rods (2) are connected to the front and rear outer walls of the vertical part of the fixed seat (1). A sliding sleeve (3) is sleeved on the outside of the guide rod (2). A lifting platform (4) is connected between the two sliding sleeves (3). Two vertical rods (5) are connected to the bottom of the lifting platform (4). The lower ends of the two vertical rods (5) are jointly connected to a transfer platform (6). Square holes (7) are formed in the front and rear parts of the transfer platform (6). A rectangular frame (8) is inserted into the square hole (7). A side bracket (9) is connected to the left side inner wall of the rectangular frame (8). A hollow tube (10) is rotatably connected to the right part of the side bracket (9). A steering shell (11) is connected to the outer wall of the hollow tube (10). An image acquisition device (12) is installed on the bottom wall of the steering shell (11).

2. The bridge crack detection device according to claim 1, characterized in that: A circular through hole (101) is formed in the horizontal part of the fixed seat (1). A receiving frame (102) is connected to the top wall of the horizontal part of the fixed seat (1). Suspension rings (103) are connected to the four corners of the top of the receiving frame (102). A water tank (104) is installed in the receiving frame (102). A storage battery (105) and a controller (106) are connected to the front end face of the receiving frame (102). A wireless module (107) is built in the controller (106). A vertical slide rail (108) is connected to the right end face of the receiving frame (102). A slider (109) is slidably connected in the vertical slide rail (108). A vertical arm (110) is connected to the outer wall of the slider (109).

3. The bridge crack detection device according to claim 2, characterized in that: A protective shell (901) is connected to the front side wall of the side bracket (9). A steering motor (902) is connected to the left end of the protective shell (901). A worm (903) is connected to the right output end of the steering motor (902). A worm gear (904) is connected to the front outer wall of the hollow tube (10). The worm gear (904) is meshed with the worm (903). The worm gear (904) and the worm (903) are both located in the protective shell (901). The front end of the hollow tube (10) is rotatably connected to a joint pipe (905) through a sealed bearing. The right end of the joint pipe (905) extends out of the protective shell (901).

4. A bridge crack detection device according to claim 3, characterized in that: A conveying motor (601) is connected to the right end of the transfer platform (6). A horizontal lead screw (602) is connected to the right output end of the conveying motor (601). The right end of the horizontal lead screw (602) is rotatably connected to the vertical arm (110) through a bearing. A nut seat (603) is screwed on the outer wall of the horizontal lead screw (602). The upper end of the nut seat (603) is fixedly connected to the rectangular frame (8). An L-shaped pipe (604) penetrates through the transfer platform (6). A liquid extraction pump (605) is installed in the L-shaped pipe (604). A corrugated pipe (606) is communicated between the horizontal end of the L-shaped pipe (604) and the joint pipe (905). A main water pipe (607) is communicated between the water tank (104) and the vertical end of the L-shaped pipe (604). The main water pipe (607) penetrates through the circular through hole (101).

5. A bridge crack detection device according to claim 1, characterized in that: At the upper end of the steering housing (11), two support rods (1101) are movably inserted. The lower ends of the two support rods (1101) are jointly connected to a metal plate (1102). At the top of the inner cavity of the steering housing (11), an electromagnet (1103) is connected. The upper ends of the two support rods (1101) are jointly connected to a cover body (1104). A compression spring (1105) is sleeved on the lower part of the outer wall of the support rod (1101). At the center of the bottom of the cover body (1104), a cleaning motor (1106) is connected. The top output end of the cleaning motor (1106) is connected to a cleaning brush (1107).

6. The bridge crack detection device according to claim 5, characterized in that: A plurality of spray nozzles (1141) are installed on the inner wall of the cover body (1104). The output end of the spray nozzle (1141) is inclined towards the cleaning brush (1107). A spray pipe (1142) is connected to the outer wall of the cover body (1104). The input end of the spray nozzle (1141) is communicated with the spray pipe (1142). A water supply pipe (1143) is communicated between the spray pipe (1142) and the rear end of the hollow pipe (10). Lighting lamps (1108) are installed on the left and right sides of the bottom wall of the steering housing (11).

7. The bridge crack detection device according to claim 1, characterized in that: T-shaped grooves (111) are formed at the front and rear ends of the horizontal part of the fixed seat (1). An I-shaped bar (112) is inserted into the T-shaped groove (111). The right ends of the two I-shaped bars (112) are jointly connected to a strip-shaped plate (113). A fastening bolt (114) is installed in the middle of the strip-shaped plate (113). A threaded hole (115) is formed at the right end of the horizontal part of the fixed seat (1). Oblique support rods (116) are connected to the left and right of the outer wall of the I-shaped bar (112). A moving wheel (117) is installed at the lower end of the oblique support rod (116). A reinforcing rib (118) is connected between two adjacent oblique support rods (116).

8. The bridge crack detection device according to claim 1, characterized in that: At the bottom of the outer wall of the vertical part of the fixed seat (1), an extension seat (121) is connected. A hydraulic rod (122) is connected between the extension seat (121) and the lifting platform (4). A driving motor (123) is connected to the left end of the extension seat (121). The top output end of the driving motor (123) is connected to a spur gear (124).

9. A bridge crack detection device according to claim 8, characterized in that: It also includes an I-shaped rail (13) fixed on the side of the bridge. A tooth groove (131) is formed on the outer wall of the I-shaped rail (13). The tooth groove (131) is meshed with the spur gear (124). Two walking frames (132) are slidably connected to the I-shaped rail (13). Guide wheels (133) are installed at the upper and lower ends of the walking frame (132). A linkage frame (134) is connected to the outer wall of the walking frame (132). A plurality of insertion blocks (135) are connected to the closer sides of the two linkage frames (134). A positioning hole (136) is formed at the center of the insertion block (135).

10. A bridge crack detection device according to claim 9, characterized in that: A plurality of the insertion blocks (135) are equidistantly distributed in the height direction. Opposite interfaces (137) that match the insertion blocks (135) are formed in the front and rear of the vertical part of the fixed seat (1). A positioning rod (138) is inserted into a plurality of the opposite interfaces (137) on the same side in common, and the positioning rod (138) penetrates through the positioning holes (136).

Images