Bridge bottom surface crack detection device

Abstract

The utility model relates to the technical field of crack detection, in particular to a bridge bottom crack detection device which comprises a screw rod and two adjusting mechanisms, the two adjusting mechanisms are respectively arranged at the ends of the screw rod, and each adjusting mechanism comprises a first threaded ring, two limiting rings, a first lantern ring, a connecting rod, a hydraulic machine, a fixing rod, a first pulley and a limiting assembly. The first threaded ring is in threaded connection with the lead screw, the two limiting rings are fixedly connected with the first threaded ring, the first lantern ring is rotationally connected with the first threaded ring, the connecting rod is fixedly connected with the first lantern ring and located above the first lantern ring, the hydraulic machine is arranged above the connecting rod, and the output end of the hydraulic machine is fixedly connected with the connecting rod. The fixing rod is fixedly connected with the hydraulic machine, the first pulley is rotatably connected with the fixing rod, and through the arrangement of the structure, the problems that in the prior art, a guide rail is difficult to adjust according to the size of a bridge, and friction is likely to happen between the device and the bridge in the moving process are solved.

Description

Technical Field

[0001] The utility model relates to the technical field of crack detection, in particular to a crack detection device for the bottom surface of a bridge. Background Art

[0002] In today's society, with the increase in traffic volume, the development of bridge construction in China is also increasing day by day. Many newly built bridges often have some natural diseases and defects in the bridge structure, resulting in traffic accidents. By checking the current technical condition of the bridge, the nature, location, severity and development trend of the damage, the main reasons for the defects and damage can be clarified, so as to more accurately analyze and evaluate the defects and damage existing in the bridge. The existing inspection of the bottom of the bridge mainly involves technicians taking the hanging basket of the bridge inspection vehicle and entering the bottom of the bridge through the adjustment of the jib. This inspection method requires technicians to work at high altitude. When the vehicle moves, the hanging basket will shake, which is likely to cause the technicians to fall, thus triggering safety accidents.

[0003] In the prior art, the patent (CN112255237B) mentions a crack detection device for the bottom surface of a bridge, including a vehicle body. There are two vehicle bodies, which are respectively arranged on both sides of the bridge width direction. A connecting frame is arranged on the vehicle body. One end of the connecting frame is fixedly arranged on the vehicle body, and the other end extends towards the bottom of the bridge. An installation platform is fixedly arranged on the side of the connecting frame away from the vehicle body. A guide rail is arranged between the installation platforms on both vehicle bodies. The guide rail is arranged under the bridge. A detection vehicle is arranged on the guide rail. The detection vehicle slides along the length direction of the guide rail. An image transmission device is arranged on the detection vehicle facing the bottom surface of the bridge. This prior art installs a guide rail on two installation platforms, and cooperates with a detection vehicle with an image transmission device to slide along the guide rail on the guide rail, records the situation at the bottom of the bridge and feeds it back to the computer. Technicians observe the bottom of the bridge on the bridge surface through the computer, without the need for technicians to work at high altitude, and reduces the probability of safety accidents.

[0004] However, in the above prior art, it is difficult to adjust the guide rail according to the size of the bridge, and during the movement process, the device is prone to friction with the bridge. Summary of the Utility Model

[0005] The purpose of the utility model is to provide a crack detection device for the bottom surface of a bridge, which solves the problems in the prior art that it is difficult to adjust the guide rail according to the size of the bridge, and during the movement process, the device is prone to friction with the bridge.

[0006] To achieve the above object, the present utility model provides a bridge bottom crack detection device, which includes a lead screw and two adjusting mechanisms. The two adjusting mechanisms are respectively arranged at the ends of the lead screw. Each adjusting mechanism includes a first threaded ring, two limiting rings, a first collar, a connecting rod, a hydraulic press, a fixed rod, a first pulley and a limiting component. The first threaded ring is threadedly connected to the lead screw and sleeved at one end of the lead screw. The two limiting rings are fixedly connected to the first threaded ring and located at both ends of the first threaded ring. The first collar is rotatably connected to the first threaded ring and located between the two limiting rings. The connecting rod is fixedly connected to the first collar and located above the first collar. The hydraulic press is arranged above the connecting rod, and the output end of the hydraulic press is fixedly connected to the connecting rod. The fixed rod is fixedly connected to the hydraulic press and located on one side of the hydraulic press, and the fixed rod is arranged in a C shape. The first pulley is rotatably connected to the fixed rod and located at one end of the fixed rod. The limiting component is arranged on one side of the connecting rod.

[0007] Among them, the limiting component includes a spring, a telescopic rod, a limiting plate and a second pulley. The telescopic rod is fixedly connected to the connecting rod and located on one side of the connecting rod. The second pulley is fixedly connected to the telescopic rod and located on one side of the telescopic rod. The limiting plate is fixedly connected to the telescopic rod and located on one side of the second pulley. The spring is sleeved on the surface of the telescopic rod and located between the connecting rod and the limiting plate.

[0008] Among them, the bridge bottom crack detection device further includes a second threaded ring, a second collar, a fixing plate, a crack detector, four support rods and four balls. The second threaded ring is threadedly connected to the lead screw and sleeved on the surface of the lead screw. The second collar is rotatably connected to the second threaded ring and sleeved on the surface of the second threaded ring. The fixing plate is fixedly connected to the second collar and located above the second collar. The crack detector is fixedly connected to the fixing plate and located above the fixing plate. The four support rods are fixedly connected to the fixing plate and located at the four bottom corners of the fixing plate. The four balls are rotatably connected to the corresponding support rods and located at the upper ends of the support rods.

[0009] Among them, the bridge bottom crack detection device further includes a driving component, and the driving component is arranged below the fixing plate.

[0010] Wherein, the driving component includes a toothed ring, a gear, and a motor. The toothed ring is fixedly connected to the second threaded ring and is located at one end of the second threaded ring. The motor is fixedly connected to the fixing plate and is located below the fixing plate. The gear is fixedly connected to the output end of the motor and is located on one side of the toothed ring. The gear meshes with the toothed ring.

[0011] For a bridge bottom crack detection device of the present utility model, the first threaded ring is threadedly connected to the lead screw and sleeved at one end of the lead screw. Two limiting rings are fixedly connected to the first threaded ring and are located at both ends of the first threaded ring. The first collar is rotatably connected to the first threaded ring and is located between the two limiting rings. The connecting rod is fixedly connected to the first collar and is located above the first collar. The hydraulic press is arranged above the connecting rod. The output end of the hydraulic press is fixedly connected to the connecting rod. The fixing rod is fixedly connected to the hydraulic press and is located on one side of the hydraulic press. The fixing rod is arranged in a C shape. The first pulley is rotatably connected to the fixing rod and is located at one end of the fixing rod. The limiting component is arranged on one side of the connecting rod. Place the first pulley on both sides of the bridge slab, rotate the first threaded ring, adjust the positions of the two first collars, control the positions of the two connecting rods and the side of the bridge slab, and control the position of the lead screw and the bottom of the bridge slab through the hydraulic press. Brief Description of the Drawings

[0012] In order to more clearly illustrate the technical solutions in the embodiments of the present utility model or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the drawings in the following description are only some embodiments of the present utility model. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0013] Figure 1 is the overall structural schematic diagram of the first embodiment of the present utility model.

[0014] Figure 2 is the front view of the first embodiment of the present utility model.

[0015] Figure 3 is the overall structural schematic diagram of the second embodiment of the present utility model.

[0016] Figure 4 is the front view of the second embodiment of the present utility model.

[0017] 101 - Lead screw, 102 - First threaded ring, 103 - First collar, 104 - Fixed plate, 105 - Crack detector, 106 - Support rod, 107 - Ball, 108 - Second threaded ring, 109 - Limit ring, 110 - Second collar, 111 - Connecting rod, 112 - Hydraulic press, 113 - Fixed rod, 114 - First pulley, 115 - Spring, 116 - Telescopic rod, 117 - Limit plate, 118 - Second pulley, 201 - Tooth ring, 202 - Gear, 203 - Motor. Detailed implementation mode

[0018] The embodiments of the present invention will be described in detail below. The examples of the embodiments are shown in the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to explain the present invention and should not be construed as a limitation of the present invention.

[0019] First embodiment:

[0020] Please refer to Figures 1 to 2 , wherein, Figure 1 is the overall structural schematic diagram of the first embodiment of the present invention, Figure 2 is the front view of the first embodiment of the present invention.

[0021] The present invention provides a bridge bottom crack detection device, including a lead screw 101, two adjustment mechanisms, a second threaded ring 108, a second collar 110, a fixed plate 104, a crack detector 105, four support rods 106 and four balls 107. Each of the adjustment mechanisms includes a first threaded ring 102, two limit rings 109, a first collar 103, a connecting rod 111, a hydraulic press 112, a fixed rod 113, a first pulley 114 and a limit component. The limit component includes a spring 115, a telescopic rod 116, a limit plate 117 and a second pulley 118. The above-mentioned scheme solves the problems in the prior art that it is difficult to adjust the guide rail according to the size of the bridge, and the device is prone to friction with the bridge during the movement process.

[0022] For this specific embodiment, the first threaded ring 102 is threadedly connected to the lead screw 101 and sleeved on one end of the lead screw 101. The two limiting rings 109 are fixedly connected to the first threaded ring 102 and located at both ends of the first threaded ring 102. The first collar 103 is rotatably connected to the first threaded ring 102 and located between the two limiting rings 109. The connecting rod 111 is fixedly connected to the first collar 103 and located above the first collar 103. The hydraulic press 112 is arranged above the connecting rod 111, and the output end of the hydraulic press 112 is fixedly connected to the connecting rod 111. The fixing rod 113 is fixedly connected to the hydraulic press 112 and located on one side of the hydraulic press 112, and the fixing rod 113 is arranged in a C shape. The first pulley 114 is rotatably connected to the fixing rod 113 and located at one end of the fixing rod 113. The limiting assembly is arranged on one side of the connecting rod 111. Place the first pulley 114 on both sides of the bridge plate, rotate the first threaded ring 102 to adjust the positions of the two first collars 103, control the positions of the two connecting rods 111 and the side surface of the bridge plate, and control the position of the lead screw 101 and the bottom of the bridge plate through the hydraulic press 112.

[0023] Wherein, the telescopic rod 116 is fixedly connected to the connecting rod 111 and located on one side of the connecting rod 111. The second pulley 118 is fixedly connected to the telescopic rod 116 and located on one side of the telescopic rod 116. The limiting plate 117 is fixedly connected to the telescopic rod 116 and located on one side of the second pulley 118. The spring 115 is sleeved on the surface of the telescopic rod 116 and located between the connecting rod 111 and the limiting plate 117. The second pulley 118 contacts the side surface of the bridge plate. The spring 115 and the telescopic rod 116 provide a certain lateral movement distance to prevent friction between the bridge surface and the connecting rod 111.

[0024] Secondly, the second threaded ring 108 is threadedly connected to the lead screw 101 and sleeved on the surface of the lead screw 101. The second collar 110 is rotatably connected to the second threaded ring 108 and sleeved on the surface of the second threaded ring 108. The fixing plate 104 is fixedly connected to the second collar 110 and located above the second collar 110. The crack detector 105 is fixedly connected to the fixing plate 104 and located above the fixing plate 104. The four support rods 106 are fixedly connected to the fixing plate 104 and located at the four bottom corners of the fixing plate 104. The four balls 107 are rotatably connected to the corresponding support rods 106 and located at the upper ends of the support rods 106. The four balls 107 are in contact with the bottom surface of the bridge plate. When moving, the four balls 107 rotate correspondingly, and at the same time, the crack detector 105 detects the bottom of the bridge plate.

[0025] When using the present utility model, place the first pulleys 114 on both sides of the bridge plate, rotate the first threaded ring 102 to adjust the positions of the two first collars 103, control the positions of the two connecting rods 111 and the side surface of the bridge plate, control the positions of the lead screw 101 and the bottom of the bridge plate through the hydraulic press 112. The springs 115 and the telescopic rods 116 provide a certain lateral movement distance to prevent friction between the bridge surface and the connecting rods 111. The four balls 107 are in contact with the bottom surface of the bridge plate. When moving, the four balls 107 rotate correspondingly, and at the same time, the crack detector 105 detects the bottom of the bridge plate.

[0026] Second Embodiment:

[0027] Please refer to Figures 3 to 4 , wherein, Figure 3 is the overall structural schematic diagram of the second embodiment of the present utility model, Figure 4 is the front view of the second embodiment of the present utility model.

[0028] On the basis of the first embodiment, the present utility model provides a bridge bottom crack detection device, which further includes a driving assembly. The driving assembly includes a toothed ring 201, a gear 202 and a motor 203. Through the setting of the above structure, the second threaded ring 108 is driven to rotate, and the crack detector 105 moves along the lead screw 101, improving the detection efficiency.

[0029] For this specific embodiment, the driving assembly is arranged below the fixing plate 104. The driving assembly drives the second threaded ring 108 to rotate. Under the limitation of the four support rods 106 and the balls 107, the crack detector 105 moves along the lead screw 101.

[0030] Among them, the toothed ring 201 is fixedly connected to the second threaded ring 108 and is located at one end of the second threaded ring 108. The motor 203 is fixedly connected to the fixing plate 104 and is located below the fixing plate 104. The gear 202 is fixedly connected to the output end of the motor 203 and is located on one side of the toothed ring 201. The gear 202 meshes with the toothed ring 201. The motor 203 drives the gear 202 to rotate, and the gear 202 drives the toothed ring 201 to rotate, so that the second threaded ring 108 rotates accordingly, driving the crack detector 105 to move along the direction of the lead screw 101.

[0031] When using the present utility model, place the first pulley 114 on both sides of the bridge plate, rotate the first threaded ring 102 to adjust the positions of the two first sleeves 103, control the positions of the two connecting rods 111 and the side of the bridge plate, and control the position of the lead screw 101 and the bottom of the bridge plate through the hydraulic press 112. The motor 203 drives the gear 202 to rotate, and the gear 202 drives the toothed ring 201 to rotate, so that the second threaded ring 108 rotates accordingly, driving the crack detector 105 to move along the direction of the lead screw 101. At the same time, the first pulley 114 moves along the bridge plate to detect the bridge plate ground, improving the detection efficiency.

[0032] The above-disclosed are only one or more preferred embodiments of the present application, and the scope of rights of the present application cannot be limited thereby. Those of ordinary skill in the art can understand all or part of the processes of implementing the above embodiments, and the equivalent changes made according to the claims of the present application still fall within the scope covered by the present application.

Claims

1. A bridge bottom surface crack detection device, comprising a screw rod, characterized in that: The invention also includes two adjusting mechanisms, which are respectively arranged at the ends of the screw rod, each of which includes a first threaded ring, two limiting rings, a first sleeve, a connecting rod, a hydraulic press, a fixed rod, a first pulley and a limiting assembly, the first threaded ring is threadedly connected to the screw rod and sleeved on one end of the screw rod, the two limiting rings are fixedly connected to the first threaded ring and are located at both ends of the first threaded ring, the first sleeve is rotatably connected to the first threaded ring and is located between the two limiting rings, the connecting rod is fixedly connected to the first sleeve and is located above the first sleeve, the hydraulic press is arranged above the connecting rod, the output end of the hydraulic press is fixedly connected to the connecting rod, the fixed rod is fixedly connected to the hydraulic press and is located on one side of the hydraulic press, and the fixed rod is arranged in a C shape, the first pulley is rotatably connected to the fixed rod and is located at one end of the fixed rod, and the limiting assembly is arranged on one side of the connecting rod.

2. The bridge bottom surface crack detection device according to claim 1, characterized in that: The limiting assembly includes a spring, a telescopic rod, a limiting plate and a second pulley. The telescopic rod is fixedly connected to the connecting rod and is located on one side of the connecting rod. The second pulley is fixedly connected to the telescopic rod and is located on one side of the telescopic rod. The limiting plate is fixedly connected to the telescopic rod and is located on one side of the second pulley. The spring is sleeved on the surface of the telescopic rod and is located between the connecting rod and the limiting plate.

3. The bridge bottom surface crack detection device according to claim 2, characterized in that: The bridge bottom surface crack detection device also includes a second threaded ring, a second sleeve ring, a fixed plate, a crack detector, four support rods and four ball bearings. The second threaded ring is threadedly connected to the screw rod and sleeved on the surface of the screw rod. The second sleeve ring is rotatably connected to the second threaded ring and sleeved on the surface of the second threaded ring. The fixed plate is fixedly connected to the second sleeve ring and is located above the second sleeve ring. The crack detector is fixedly connected to the fixed plate and is located above the fixed plate. The four support rods are fixedly connected to the fixed plate and are located at the four bottom corners of the fixed plate. The four ball bearings are rotatably connected to the corresponding support rods and are located at the upper ends of the support rods.

4. The bridge bottom surface crack detection device according to claim 3, characterized in that: The bridge bottom surface crack detection device also includes a driving component, and the driving component is arranged below the fixing plate.

5. The bridge bottom surface crack detection device according to claim 4, characterized in that: The driving assembly includes a gear ring, a gear and a motor. The gear ring is fixedly connected to the second threaded ring and is located at one end of the second threaded ring. The motor is fixedly connected to the fixed plate and is located below the fixed plate. The gear is fixedly connected to the output end of the motor and is located on one side of the gear ring. The gear is meshed with the gear ring.

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