CN117589688A - Bridge expansion joint steel structure detection device and method thereof - Google Patents
Bridge expansion joint steel structure detection device and method thereof Download PDFInfo
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- CN117589688A CN117589688A CN202410075272.1A CN202410075272A CN117589688A CN 117589688 A CN117589688 A CN 117589688A CN 202410075272 A CN202410075272 A CN 202410075272A CN 117589688 A CN117589688 A CN 117589688A
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- 238000001514 detection method Methods 0.000 title claims abstract description 81
- 229910000831 Steel Inorganic materials 0.000 title claims abstract description 66
- 239000010959 steel Substances 0.000 title claims abstract description 66
- 238000000034 method Methods 0.000 title claims abstract description 15
- 230000000007 visual effect Effects 0.000 claims abstract description 46
- 230000007246 mechanism Effects 0.000 claims abstract description 14
- 230000006835 compression Effects 0.000 claims description 32
- 238000007906 compression Methods 0.000 claims description 32
- 238000010276 construction Methods 0.000 claims description 4
- 238000007689 inspection Methods 0.000 abstract description 6
- 230000008569 process Effects 0.000 abstract description 6
- 238000011179 visual inspection Methods 0.000 abstract description 5
- 230000009471 action Effects 0.000 description 4
- 238000013461 design Methods 0.000 description 2
- 230000004075 alteration Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
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Classifications
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
- G01N21/01—Arrangements or apparatus for facilitating the optical investigation
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
- G01N21/84—Systems specially adapted for particular applications
- G01N21/88—Investigating the presence of flaws or contamination
- G01N21/89—Investigating the presence of flaws or contamination in moving material, e.g. running paper or textiles
- G01N21/892—Investigating the presence of flaws or contamination in moving material, e.g. running paper or textiles characterised by the flaw, defect or object feature examined
Abstract
The invention relates to the technical field of visual inspection, and discloses a bridge expansion joint steel structure inspection device and a method thereof, which solve the problem of long inspection period, and the bridge expansion joint steel structure inspection device comprises a frame and a conveyor belt, wherein a driving mechanism for driving the conveyor belt to move is arranged on the frame; in the process of conveying the steel structure to be detected by the conveying belt, different positions on the steel structure to be detected can be detected through the top surface visual detection structure and the side surface visual detection structure, the steel structure to be detected does not need to be stopped at the detection position, and the detection efficiency is improved.
Description
Technical Field
The invention belongs to the technical field of expansion joint steel structures, and particularly relates to a bridge expansion joint steel structure detection device and a bridge expansion joint steel structure detection method.
Background
The visual detection is to replace human eyes with a machine to make measurement and judgment, the object to be shot is converted into an image signal by an image shooting device, the image signal is transmitted to a special image processing system, the image signal is converted into a digital signal according to information such as pixel distribution, brightness, color and the like, the image system performs various operations on the signals to extract the characteristics of the object, and then the on-site equipment action is controlled according to the judgment result. In the visual detection process of the expansion joint steel structure, a detection unit is required to be arranged to detect whether the steel structure to be detected is conveyed to a detection position, then the steel structure to be detected is controlled to stop at the detection position, the position of the steel structure to be detected or the visual detection structure is adjusted through an adjusting mechanism, so that the steel structure to be detected is better photographed and identified by the visual detection structure, after detection is completed, the next steel structure to be detected is conveyed to the detection position, the detection period is longer, and certain limitation exists.
Disclosure of Invention
Aiming at the situation, in order to overcome the defects of the prior art, the invention provides a device and a method for detecting the steel structure of the bridge expansion joint, which effectively solve the problem of long detection period in the background art.
In order to achieve the above purpose, the present invention provides the following technical solutions: the bridge expansion joint steel structure detection device comprises a frame and a conveyer belt, wherein a driving mechanism for driving the conveyer belt to move is arranged on the frame, a plurality of first fixed blocks are fixedly connected on the conveyer belt, one side of the first fixed blocks, which is far away from the conveyer belt, is provided with a carrying disc, a first rotating shaft is fixedly connected on the carrying disc, a supporting seat is sleeved outside the first rotating shaft, a bearing is arranged at the joint of the first rotating shaft and the supporting seat, the supporting seat and the first fixed blocks are connected through an elastic stop unit, a friction wheel is sleeved outside the first rotating shaft and is positioned between the supporting seat and the first fixed blocks, a fixed seat is fixedly connected on the frame, one side of the fixed seat is provided with a first movable plate positioned above the conveyer belt, the other side of the fixed seat is provided with a movable seat, the first movable plate and the movable seat are connected through two first connecting plates, the first connecting plate penetrates through the fixed seat, the movable seat and the fixed seat are connected through an elastic restorer, a pressing column is fixedly connected on the first fixed block, an inclined plane matched with the pressing column is arranged on the first movable plate, a friction plate matched with the friction wheel is arranged above the first movable plate, a first toothed plate is fixedly connected on one first connecting plate, the friction plate and the first toothed plate are connected through a sliding anisotropic pressing structure, an ejection lifter matched with the supporting seat is arranged on the fixed seat, a movable frame is arranged above the conveying belt, the movable frame and the frame are connected through a stretching sliding piece, a top surface visual detection structure is fixedly connected on the movable frame, side surface visual detection structures are respectively arranged on two sides of the top surface visual detection structure, the side surface visual detection structure is fixedly connected with the movable frame, two first fixing frames are fixedly connected at the bottom of the movable frame, pushing plates are respectively and fixedly connected on two sides of the supporting seat, the first fixing frame is provided with a pressing unlocking component matched with the push plate.
Preferably, the pressing unlocking component comprises a first fixing plate fixedly installed on a first fixing frame, a pressing plate is arranged below the first fixing plate, a limiting plate is arranged above the first fixing plate, the pressing plate and the limiting plate are connected through two connecting columns, the connecting columns penetrate through the first fixing plate, a first compression spring is sleeved outside the connecting columns, and two ends of the first compression spring are fixedly connected with the pressing plate and the first fixing plate respectively.
Preferably, the sliding anisotropic pressing structure comprises a second movable plate arranged between the friction plate and the fixed seat, a sliding plate is fixedly connected to the second movable plate, the sliding plate penetrates through the fixed seat, the second movable plate and the friction plate are connected through an elastic force adjusting unit, a gear is arranged on one side of the first toothed plate, a second rotating shaft is fixedly connected to the gear, a second fixed plate is sleeved outside the second rotating shaft, a bearing is arranged at the joint of the second rotating shaft and the second fixed plate, the second fixed plate is fixedly connected with the fixed seat, a second toothed plate is arranged on one side of the gear, the bottom of the second toothed plate is fixedly connected with the bottom of the second movable plate, and the first toothed plate and the second toothed plate are meshed with the gear respectively.
Preferably, the elastic force adjusting unit comprises a sliding plate fixedly installed on the friction plate, a sliding groove is formed in the second movable plate, an adjusting plate is arranged in the sliding groove, one end of the sliding plate, away from the friction plate, is located in the sliding groove, the sliding plate and the adjusting plate are connected through a plurality of second compression springs, rectangular holes are formed in the inner wall of the top of the sliding groove, a limiting block is fixedly connected to the sliding plate and located in the rectangular holes, a screw rod is fixedly connected to the adjusting plate and penetrates through the second movable plate, a second fixing frame is fixedly connected to the second movable plate, the screw rod penetrates through the second fixing frame, two nuts are sleeved outside the screw rod, and two adjacent nuts are located on two sides of the second fixing frame respectively.
Preferably, the elastic restorer comprises a supporting part fixedly mounted on the movable seat, the movable seat is contacted with the fixed seat, and the supporting part is connected with the fixed seat through a plurality of first extension springs.
Preferably, the ejection lifter comprises a third fixed plate fixedly mounted on the fixed seat, the third fixed plate is penetrated with an ejection plate, one of the first connecting plates is fixedly connected with a supporting block, the supporting block is provided with an inclined surface matched with the ejection plate, the bottom end of the ejection plate is contacted with the inclined surface on the supporting block, and the supporting seat is fixedly connected with a first supporting plate matched with the ejection plate.
Preferably, the stretching sliding part comprises two second fixing blocks fixedly mounted on the movable frame, a third fixing frame is arranged on one side of each second fixing block, the third fixing frames are fixedly connected with the frame, guide columns penetrate through the second fixing blocks, two ends of each guide column are respectively connected with the third fixing frames through second supporting plates, third compression springs are sleeved outside the guide columns, and two ends of each third compression spring are respectively fixedly connected with the second fixing blocks and one of the second supporting plates.
Preferably, the elastic stop unit comprises at least two movable columns fixedly mounted on the supporting seat, a fixed sleeve is sleeved outside the movable columns, one end of the fixed sleeve, which is far away from the supporting seat, is fixedly connected with the first fixed block through a fourth fixed plate, the movable columns are connected with the fourth fixed plate through a second extension spring, one end of the fixed sleeve, which is far away from the fourth fixed plate, is in contact with the supporting seat, a guide groove is formed in the inner wall of the fixed sleeve, a guide block is arranged in the guide groove, and the guide block is fixedly connected with the movable columns.
Preferably, two side plates for limiting the position of the first fixed block are arranged above the frame, and the side plates are connected with the frame through a second connecting plate.
The invention also provides a bridge expansion joint steel structure detection method, which comprises the following steps of:
step one: the steel structure to be detected is placed on a carrying disc through a feeding mechanism, and the conveying belt is driven to move through a driving mechanism, so that a first fixed block positioned on the conveying belt and the carrying disc move;
step two: when a carrying disc with a steel structure to be detected is placed and moved to a preset position, a pressing column on a first fixed block corresponding to the carrying disc is contacted with an inclined surface on a first movable plate, the pressing column pushes the first movable plate to move along with the continuous movement of the first fixed block and the carrying disc, the first movable plate drives a first connecting plate and a movable seat to move, the first connecting plate drives a first toothed plate to move, the first toothed plate drives a friction plate to move towards a friction wheel through a sliding anisotropic pressing structure, at the moment, a supporting seat and the carrying disc are driven to synchronously move upwards through an ejection lifter, and a push plate synchronously moves upwards along with the supporting seat;
Step three: when one end of the pressing column is contacted with one side of the first movable plate far away from the first connecting plate, the pressing column does not push the first movable plate and the first connecting plate to move relative to the fixed seat along with continuous movement of the pressing column, at the moment, the friction plate is driven to press on the friction wheel by the sliding anisotropic pressing structure, meanwhile, the push plate moves to one side of the first fixing frame, the push plate is contacted with one side of the first fixing frame, and the two side visual detection structures are respectively positioned at two sides of the carrying disc;
step four: along with the continuous movement of the carrying disc and the first fixed block, the friction wheel rolls on the friction plate due to friction force, so that the friction wheel drives the first rotating shaft and the carrying disc to rotate, meanwhile, the push plate drives the movable frame to synchronously move in the horizontal direction through the first fixed frame, so that the side visual detection structure and the top visual detection structure synchronously move along the horizontal direction of the carrying disc, and the steel structure to be detected on the carrying disc can rotate due to the rotation of the carrying disc when the carrying disc horizontally moves, so that the side visual detection structure detects different positions on the side surface of the steel structure, and meanwhile, the top visual detection structure detects the top surface of the steel structure;
Step five: when the top surface visual detection structure and the side surface visual detection structure respectively finish detection, along with the continuous movement of the first fixed block, when the pressing column is not contacted with the first movable plate any more, the pressing column is not used for supporting the first movable plate any more, at the moment, the elastic reset device drives the movable seat to move so as to reset the first movable plate and the first connecting plate to the initial position, the first connecting plate drives the first toothed plate to move reversely, the friction plate is driven by the first toothed plate to move towards the direction far away from the friction wheel through the sliding anisotropic pressing structure, the friction plate can be prevented from contacting with the friction wheel, the supporting seat and the carrying disc are not supported by the ejection lifter, the supporting seat is driven by the elastic stop unit to move downwards, and meanwhile, the push plate is pressed downwards by the unlocking component to enable the supporting seat and the push plate to descend to the initial height again, the limitation of the positions of the first fixed frame and the movable frame is ensured not to be contacted any more, the initial position of the movable frame and the first fixed frame is relieved, the friction plate is driven by the stretching sliding piece to reset the initial position, and the carrying disc of the steel structure to be detected can be detected once when the carrying disc to be placed to the preset position is moved.
Compared with the prior art, the invention has the beneficial effects that:
(1) The steel structure to be detected is placed on a carrying disc through a feeding mechanism, a driving mechanism drives a conveying belt to move so as to enable a first fixed block and the carrying disc which are positioned on the conveying belt to move, when the carrying disc with the steel structure to be detected is placed at a preset position, a pressing column on the first fixed block corresponding to the steel structure to be detected is contacted with an inclined surface on a first movable plate, along with continuous movement of the first fixed block and the carrying disc, the pressing column pushes the first movable plate to move, the first movable plate drives the first connecting plate and the movable seat to move, the first connecting plate drives the first toothed plate to move, the first toothed plate drives the friction plate to move towards a friction wheel through a sliding anisotropic pressing structure, at the moment, a supporting seat and the carrying disc are driven to synchronously move upwards through an ejection lifter, a pushing plate synchronously moves upwards along with the supporting seat, when one end of the pressing column is contacted with one side of the first movable plate away from the first connecting plate, along with the continuous movement of the pressing column, the pressing column does not push the first movable plate and the first connecting plate to move relative to the fixed seat, at the moment, the sliding opposite pressing structure drives the friction plate to press on the friction wheel, meanwhile, the push plate moves to one side of the first fixing frame, the push plate contacts with one side of the first fixing frame, the two side visual detection structures are respectively positioned at two sides of the carrying disc, along with the continuous movement of the carrying disc and the first fixing block, the friction wheel rolls on the friction plate due to friction force, so that the friction wheel drives the first rotating shaft and the carrying disc to rotate, meanwhile, the push plate drives the movable frame to synchronously move in the horizontal direction through the first fixing frame, so that the side visual detection structure and the top visual detection structure synchronously move along the horizontal direction of the carrying disc, and the steel structure to be detected positioned on the carrying disc can be caused to rotate due to the rotation when the carrying disc horizontally moves, so that the side visual inspection structure can inspect different positions on the side of the steel structure, the top visual inspection structure can inspect the top surface of the steel structure, when the top visual inspection structure and the side visual inspection structure respectively complete inspection, along with the continuous movement of the first fixed block, when the pressing column is no longer contacted with the first movable plate, the pressing column does not support the first movable plate, at the moment, the elastic restorer drives the movable seat to move so as to restore the initial positions of the first movable plate and the first connecting plate, the first connecting plate drives the first toothed plate to move reversely, so that the first toothed plate drives the friction plate to move towards a direction far away from the friction wheel through the sliding anisotropic pressing structure, the friction plate can be no longer contacted with the friction wheel, and the ejection lifter does not support the supporting seat and the carrying disc, the supporting seat is driven to move downwards through the elastic stop unit, meanwhile, the unlocking component is pressed downwards to apply downward force to the push plate, so that the supporting seat and the push plate are lowered to the initial height again, the push plate is ensured not to be contacted with the first fixing frame any more, the limitation on the positions of the first fixing frame and the movable frame is relieved, the movable frame and the first fixing frame are driven to reset to the initial position through the stretching sliding piece, when a carrying disc for placing a steel structure to be detected next moves to a preset position, the steel structure to be detected can be detected next time, and in the process of conveying the steel structure to be detected through the conveying belt, different positions on the steel structure to be detected can be detected through the top surface visual detection structure and the side surface visual detection structure, the steel structure to be detected does not need to be stopped at the detection position, and the detection efficiency is improved;
(2) When the pressing column pushes the first movable plate, the first connecting plate and the movable seat to move, the supporting part moves along with the movable seat, the first stretching spring is in a stretching state, the supporting block moves along with one of the first connecting plates, at the moment, the first supporting plate moves to the upper part of the ejector plate, one end of the push plate is positioned below the pressing plate, as the bottom end of the ejector plate is contacted with the inclined surface on the supporting block, the supporting block pushes the ejector plate to move upwards along with the continuous movement of the first connecting plate and the supporting block, the ejector plate drives the first supporting plate and the supporting seat to move upwards, the supporting seat drives the movable column to move upwards, the second stretching spring is in a stretching state, the movable column is prevented from being separated from the fixed sleeve through the design of the guide block and the guide groove, the push plate drives the pressing plate to move upwards in the process of the upward movement of the supporting seat, the first compression spring is in a compression state, when one end of the pressing column is contacted with one side of the first movable plate far away from the first connecting plate, the pressing column does not push the first movable plate to move relative to the fixed seat along with continuous movement of the pressing column, the push plate is contacted with one side of the first fixed frame at the moment, the push plate drives the movable frame to synchronously move along the horizontal direction along with continuous movement of the carrying tray and the first fixed frame, when the pressing column is not contacted with the first movable plate any more, the pressing column does not support the first movable plate any more, at the moment, the first stretching spring drives the supporting part and the movable seat to move so as to reset the first movable plate and the first connecting plate to the initial position, the supporting block moves towards the direction far away from the fixed seat, the ejector plate moves downwards relative to the third fixed plate, the ejector plate does not support the supporting seat and the carrying tray, the second stretching spring drives the movable column and the supporting seat to move downwards, simultaneously, the first compression spring applies downward force to the pressing plate and the pushing plate so as to enable the supporting seat and the pushing plate to descend to the initial height again, and the position limitation of the first fixed frame and the movable frame can be relieved by ensuring that the pushing plate is not contacted with the first fixed frame any more;
(3) When the first movable plate and the first connecting plate are pushed by the pressing post to move, the first toothed plate drives the gear to rotate, the gear drives the second toothed plate and the second movable plate to move so as to enable the friction plate to be in contact with the friction wheel, the second movable plate moves towards the friction plate along with the continuous movement of the first toothed plate, the length of the sliding plate in the sliding groove is changed so as to enable the length of the second compression spring to be changed, the limiting block moves along with the sliding plate, the second compression spring applies pressure to the sliding plate and the friction plate so as to enable the friction plate to be elastically pressed on the friction wheel, when the friction wheel moves in the horizontal direction relative to the friction plate, the friction wheel can roll on the friction plate through friction force, when the pressing post is not contacted with the first movable plate any more, the elastic reset device drives the movable seat and the first connecting plate to reset the initial position, the first connecting plate can enable the friction plate and the second movable plate to reset the initial position, the two adjacent nuts are driven to rotate so that the two adjacent nuts are not clamped any more, the relation between the second fixing frame and the second movable plate is relieved, the friction plate and the two adjacent nuts can be adjusted, and the friction plate can be adjusted by the friction force between the two adjacent nuts and the sliding plate after the friction plate is adjusted, and the friction plate is adjusted to be pressed by the friction plate, and the friction plate can be adjusted to be pressed by the friction plate after the friction plate is adjusted, the screw rod can be fixed relative to the second fixed frame and the second movable plate;
(4) When the push plate pushes the first fixing frame and the movable frame to move, the second fixing block moves relative to the second supporting plate and the third fixing frame, the third compression spring is in a compressed state, when the push plate is not contacted with the first fixing frame any more, the support on the first fixing frame and the movable frame is released, the third compression spring can drive the second fixing block and the movable frame to reset to the initial position, when a steel structure to be detected is placed on the carrying disc to move to a preset position, the corresponding first fixing block moves between the two side plates, the positions on two sides of the first fixing block are limited through the two side plates, the first fixing block is prevented from inclining and shaking, and then the carrying disc is prevented from inclining and shaking when the detection area moves, so that the stability is improved.
Drawings
The accompanying drawings are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate the invention and together with the embodiments of the invention, serve to explain the invention.
In the drawings:
FIG. 1 is a schematic view of the overall structure of the present invention;
FIG. 2 is a schematic view of a side plate according to the present invention;
FIG. 3 is a schematic view showing the structure of the elastic stopper unit of the present invention disassembled;
FIG. 4 is a schematic view of the structure of the movable frame of the present invention;
FIG. 5 is a schematic view of a sliding anisotropic pressing structure according to the present invention;
FIG. 6 is a schematic view of the bottom of the second movable plate according to the present invention;
FIG. 7 is a schematic view of the structure of the movable seat of the present invention;
FIG. 8 is a schematic structural view of a second fixing plate according to the present invention;
FIG. 9 is a schematic structural view of a second fixing frame of the present invention;
fig. 10 is a schematic sectional view of a second movable plate according to the present invention.
In the figure: 1. a frame; 2. a conveyor belt; 3. a driving mechanism; 4. a first fixed block; 5. a carrying tray; 6. a first rotating shaft; 7. a support base; 8. a friction wheel; 9. a fixing seat; 10. a first movable plate; 11. a first connection plate; 12. a movable seat; 13. pressing the column; 14. a movable frame; 15. a top vision inspection structure; 16. a side vision inspection structure; 17. a first fixing frame; 18. a first fixing plate; 19. pressing the plate; 20. a limiting plate; 21. a connecting column; 22. a first compression spring; 23. a friction plate; 24. a first toothed plate; 25. a gear; 26. a second rotating shaft; 27. a second fixing plate; 28. a second toothed plate; 29. a second movable plate; 30. a slide plate; 31. a chute; 32. an adjusting plate; 33. a second compression spring; 34. a rectangular hole; 35. a limiting block; 36. a screw rod; 37. the second fixing frame; 38. a nut; 39. a support part; 40. a first extension spring; 41. a third fixing plate; 42. an ejector plate; 43. a support block; 44. a first support plate; 45. a second fixed block; 46. a guide post; 47. a third fixing frame; 48. a second support plate; 49. a third compression spring; 50. a movable column; 51. a fixed sleeve; 52. a second tension spring; 53. a guide block; 54. a guide groove; 55. a side plate; 56. a second connecting plate; 57. a fourth fixing plate; 58. a push plate.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and fully with reference to the accompanying drawings, in which it is evident that the embodiments described are only some, but not all embodiments of the invention; all other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
The first embodiment, given by fig. 1 to 10, the invention comprises a frame 1 and a conveyer belt 2, wherein a driving mechanism 3 for driving the conveyer belt 2 to move is arranged on the frame 1, a plurality of first fixed blocks 4 are fixedly connected on the conveyer belt 2, a carrying tray 5 is arranged on one side of the first fixed blocks 4 far away from the conveyer belt 2, a first rotating shaft 6 is fixedly connected on the carrying tray 5, a supporting seat 7 is sleeved outside the first rotating shaft 6, a bearing is arranged at the joint of the first rotating shaft 6 and the supporting seat 7, the supporting seat 7 is connected with the first fixed blocks 4 through an elastic stop unit, a friction wheel 8 is sleeved outside the first rotating shaft 6, the friction wheel 8 is positioned between the supporting seat 7 and the first fixed blocks 4, a fixed seat 9 is fixedly connected on the frame 1, a first movable plate 10 positioned above the conveyer belt 2 is arranged on one side of the fixed seat 9, a movable seat 12 is arranged on the other side of the fixed seat 9, the first movable plate 10 and the movable seat 12 are connected through two first connecting plates 11, the first connecting plates 11 penetrate through the fixed seat 9, the movable seat 12 and the fixed seat 9 are connected through an elastic restorer, the first fixed block 4 is fixedly connected with a pressing column 13, the first movable plate 10 is provided with an inclined surface matched with the pressing column 13, the upper part of the first movable plate 10 is provided with a friction plate 23 matched with the friction wheel 8, one first connecting plate 11 is fixedly connected with a first toothed plate 24, the friction plate 23 and the first toothed plate 24 are connected through a sliding anisotropic pressing structure, the fixed seat 9 is provided with an ejection lifter matched with the supporting seat 7, the upper part of the conveying belt 2 is provided with a movable frame 14, the movable frame 14 and the frame 1 are connected through a stretching sliding piece, the movable frame 14 is fixedly connected with a top surface visual detection structure 15, two sides of the top surface visual detection structure 15 are respectively provided with a side surface visual detection structure 16, and side visual detection structure 16 and movable frame 14 fixed connection, the bottom fixedly connected with of movable frame 14 two first mounts 17, the both sides of supporting seat 7 are fixedly connected with push pedal 58 respectively, be equipped with on the first mount 17 with push pedal 58 matched with push down the unblock subassembly, conveyer belt 2 carries the in-process of waiting to detect the steel construction, can detect through top surface visual detection structure 15 and side visual detection structure 16 the different positions on waiting to detect the steel construction, need not stop waiting to detect the steel construction in the detection position, detection efficiency has been improved.
In the second embodiment, as shown in fig. 2, 3, 4, 5, 6 and 7, the pressing unlocking assembly includes a first fixing plate 18 fixedly installed on a first fixing frame 17, a pressing plate 19 is arranged below the first fixing plate 18, a limiting plate 20 is arranged above the first fixing plate 18, the pressing plate 19 and the limiting plate 20 are connected through two connecting columns 21, the connecting columns 21 penetrate through the first fixing plate 18, a first compression spring 22 is sleeved outside the connecting columns 21, and two ends of the first compression spring 22 are fixedly connected with the pressing plate 19 and the first fixing plate 18 respectively; the elastic restorer comprises a supporting part 39 fixedly arranged on the movable seat 12, the movable seat 12 is contacted with the fixed seat 9, the supporting part 39 is connected with the fixed seat 9 through a plurality of first extension springs 40, the ejection lifter comprises a third fixed plate 41 fixedly arranged on the fixed seat 9, an ejection plate 42 penetrates through the third fixed plate 41, one first connecting plate 11 is fixedly connected with a supporting block 43, the supporting block 43 is provided with an inclined surface matched with the ejection plate 42, the bottom end of the ejection plate 42 is contacted with the inclined surface on the supporting block 43, and a first supporting plate 44 matched with the ejection plate 42 is fixedly connected on the supporting seat 7; the elastic stop unit comprises at least two movable columns 50 fixedly arranged on the supporting seat 7, a fixed sleeve 51 is sleeved outside the movable columns 50, one end of the fixed sleeve 51, which is far away from the supporting seat 7, is fixedly connected with the first fixed block 4 through a fourth fixed plate 57, the movable columns 50 are connected with the fourth fixed plate 57 through a second extension spring 52, one end of the fixed sleeve 51, which is far away from the fourth fixed plate 57, is contacted with the supporting seat 7, a guide groove 54 is formed in the inner wall of the fixed sleeve 51, a guide block 53 is arranged in the guide groove 54, and the guide block 53 is fixedly connected with the movable columns 50;
When the pressing post 13 pushes the first movable plate 10, the first connecting plate 11 and the movable seat 12 to move, the supporting part 39 moves along with the movable seat 12, the first extension spring 40 is in a stretched state, the supporting block 43 moves along with one of the first connecting plates 11, at this time, the first supporting plate 44 moves above the ejector plate 42, and one end of the push plate 58 is positioned below the pressing plate 19, since the bottom end of the ejector plate 42 contacts with the inclined surface on the supporting block 43, the supporting block 43 pushes the ejector plate 42 to move upwards along with the continuous movement of the first connecting plate 11 and the supporting block 43, the ejector plate 42 drives the first supporting plate 44 and the supporting seat 7 to move upwards, the supporting seat 7 drives the movable post 50 to move upwards, the second extension spring 52 is in a stretched state, the design of the guide block 53 and the guide groove 54 prevents the movable post 50 from being separated from the fixed sleeve 51, and the push plate 58 drives the pressing plate 19 to move upwards during the upward movement of the supporting seat 7, the first compression spring 22 is in a compressed state, when one end of the pressing post 13 contacts with one side of the first movable plate 10 far away from the first connecting plate 11, the pressing post 13 does not push the first movable plate 10 to move relative to the fixed seat 9 along with the continuous movement of the pressing post 13, at this time, the push plate 58 contacts with one side of the first fixed frame 17, the push plate 58 drives the movable frame 14 to synchronously move in the horizontal direction through the first fixed frame 17 along with the continuous movement of the carrying tray 5 and the first fixed block 4, when the pressing post 13 does not contact with the first movable plate 10, the pressing post 13 does not support the first movable plate 10 any more, at this time, the first extension spring 40 drives the supporting part 39 and the movable seat 12 to move so as to reset the first movable plate 10 and the first connecting plate 11 to the initial position, the supporting block 43 moves towards the direction far away from the fixed seat 9, the ejector plate 42 moves downwards relative to the third fixed plate 41, the ejector plate 42 no longer supports the supporting seat 7 and the carrying tray 5, the movable column 50 and the supporting seat 7 are driven to move downwards by the second extension spring 52, and simultaneously the first compression spring 22 applies downward force to the pressing plate 19 and the pushing plate 58, so that the supporting seat 7 and the pushing plate 58 are lowered to the initial height again, the pushing plate 58 is ensured not to contact with the first fixed frame 17 any more, and the limitation on the positions of the first fixed frame 17 and the movable frame 14 can be released.
In the third embodiment, based on the first embodiment, as shown in fig. 5, 6, 7, 8, 9 and 10, the sliding anisotropic pressing structure includes a second movable plate 29 disposed between the friction plate 23 and the fixed seat 9, a sliding plate 30 is fixedly connected to the second movable plate 29, the sliding plate 30 penetrates through the fixed seat 9, the second movable plate 29 and the friction plate 23 are connected through an elastic force adjusting unit, a gear 25 is disposed on one side of the first toothed plate 24, a second rotating shaft 26 is fixedly connected to the gear 25, a second fixed plate 27 is sleeved outside the second rotating shaft 26, a bearing is disposed at a joint between the second rotating shaft 26 and the second fixed plate 27, the second fixed plate 27 is fixedly connected with the fixed seat 9, a second toothed plate 28 is disposed on one side of the gear 25, the second toothed plate 28 is fixedly connected to the bottom of the second movable plate 29, the first toothed plate 24 and the second toothed plate 28 are respectively meshed with the gear 25, the elastic force adjusting unit comprises a sliding plate 30 fixedly installed on the friction plate 23, a sliding groove 31 is formed in the second movable plate 29, an adjusting plate 32 is arranged in the sliding groove 31, one end, far away from the friction plate 23, of the sliding plate 30 is positioned in the sliding groove 31, the sliding plate 30 and the adjusting plate 32 are connected through a plurality of second compression springs 33, rectangular holes 34 are formed in the inner wall of the top of the sliding groove 31, a limiting block 35 is fixedly connected to the sliding plate 30, the limiting block 35 is positioned in the rectangular holes 34, a screw rod 36 is fixedly connected to the adjusting plate 32, the screw rod 36 penetrates through the second movable plate 29, a second fixing frame 37 is fixedly connected to the second movable plate 29, the screw rod 36 penetrates through the second fixing frame 37, two nuts 38 are sleeved outside the screw rod 36, and two adjacent nuts 38 are respectively positioned on two sides of the second fixing frame 37;
When the pressing post 13 pushes the first movable plate 10 and the first connecting plate 11 to move, the first connecting plate 11 drives the first toothed plate 24 to move, the first toothed plate 24 drives the gear 25 to rotate, the gear 25 drives the second toothed plate 28 and the second movable plate 29 to move so as to bring the friction plate 23 into contact with the friction wheel 8, the second movable plate 29 moves toward the friction plate 23 as the first toothed plate 24 continues to move, the length of the slide plate 30 located in the slide groove 31 changes so as to change the length of the second compression spring 33, and the stopper 35 follows the slide plate 30, the second compression spring 33 applies pressure to the slide plate 30 and the friction plate 23 so as to elastically press the friction plate 23 against the friction wheel 8, when the friction wheel 8 moves horizontally relative to the friction plate 23, the friction wheel 8 can roll on the friction plate 23 by friction force, when the pressing post 13 is no longer in contact with the first movable plate 10, the elastic restorer drives the movable seat 12 and the first connecting plate 11 to restore to the initial position, the first connecting plate 11 drives the first toothed plate 24 to move reversely, so that the friction plate 23 and the second movable plate 29 can restore to the initial position, the worker drives the adjacent two nuts 38 to rotate, so that the adjacent two nuts 38 no longer clamp the second fixing frame 37, the fixed relation between the screw rod 36 and the second fixing frame 37 is released, the worker drives the screw rod 36 and the adjusting plate 32 to move, the initial distance between the adjusting plate 32 and the sliding plate 30 is changed, the initial pressure applied by the second compression spring 33 to the sliding plate 30 and the friction plate 23 can be adjusted, when the friction plate 23 is pressed on the friction wheel 8, the pressing force of the friction plate 23 on the friction wheel 8 can be changed, the friction wheel 8 can roll on the friction plate 23 through friction force, after the position adjustment of the screw rod 36 and the adjusting plate 32 is completed, the worker drives the adjacent two nuts 38 to rotate, so that the adjacent two nuts 38 clamp the second fixing frame 37, and the screw rod 36 can be fixed relative to the second fixing frame 37 and the second movable plate 29.
In the fourth embodiment, based on the first embodiment, as shown in fig. 1, 2 and 4, the stretching slider includes two second fixing blocks 45 fixedly installed on the movable frame 14, one side of each second fixing block 45 is provided with a third fixing frame 47, the third fixing frame 47 is fixedly connected with the frame 1, the second fixing block 45 is penetrated with a guide post 46, two ends of the guide post 46 are respectively connected with the third fixing frame 47 through a second supporting plate 48, a third compression spring 49 is sleeved outside the guide post 46, and two ends of the third compression spring 49 are respectively fixedly connected with the second fixing block 45 and one of the second supporting plates 48; two side plates 55 for limiting the position of the first fixed block 4 are arranged above the frame 1, and the side plates 55 are connected with the frame 1 through a second connecting plate 56;
when the push plate 58 pushes the first fixed frame 17 and the movable frame 14 to move, the second fixed block 45 moves relative to the second supporting plate 48 and the third fixed frame 47, the third compression spring 49 is in a compressed state, when the push plate 58 is not contacted with the first fixed frame 17 any more, the support on the first fixed frame 17 and the movable frame 14 is released, the third compression spring 49 can drive the second fixed block 45 and the movable frame 14 to reset to the initial position, when the steel structure to be detected is placed on the carrying disc 5 to move to the preset position, the corresponding first fixed block 4 moves between the two side plates 55, the positions of the two sides of the first fixed block 4 are limited by the two side plates 55, the first fixed block 4 is prevented from tilting and shaking, and further the carrying disc 5 is prevented from tilting and shaking when the detection area moves, so that the stability is improved.
The bridge expansion joint steel structure detection method of the embodiment comprises the following steps of:
step one: the steel structure to be detected is placed on a carrying disc 5 through a feeding mechanism, and the conveying belt 2 is driven to move through a driving mechanism 3, so that a first fixed block 4 and the carrying disc 5 on the conveying belt 2 move;
step two: when the carrying disc 5 with the steel structure to be detected is moved to a preset position, the pressing column 13 on the first fixed block 4 corresponding to the carrying disc is contacted with the inclined surface on the first movable plate 10, the pressing column 13 pushes the first movable plate 10 to move along with the continuous movement of the first fixed block 4 and the carrying disc 5, the first movable plate 10 drives the first connecting plate 11 and the movable seat 12 to move, the first connecting plate 11 drives the first toothed plate 24 to move, the first toothed plate 24 drives the friction plate 23 to move towards the friction wheel 8 through the sliding opposite pressing structure, and at the moment, the supporting seat 7 and the carrying disc 5 are driven to synchronously move upwards through the ejection lifter, and the push plate 58 synchronously moves upwards along with the supporting seat 7;
step three: when one end of the pressing post 13 contacts with one side of the first movable plate 10 away from the first connecting plate 11, with the continuous movement of the pressing post 13, the pressing post 13 does not push the first movable plate 10 and the first connecting plate 11 to move relative to the fixed seat 9, at this time, the sliding anisotropic pressing structure drives the friction plate 23 to press on the friction wheel 8, meanwhile, the push plate 58 moves to one side of the first fixed frame 17, and the push plate 58 contacts with one side of the first fixed frame 17, and the two lateral visual detection structures 16 are respectively positioned at two sides of the carrying disc 5;
Step four: along with the continuous movement of the carrying disc 5 and the first fixed block 4, the friction wheel 8 rolls on the friction plate 23 due to friction force, so that the friction wheel 8 drives the first rotating shaft 6 and the carrying disc 5 to rotate, meanwhile, the push plate 58 drives the movable frame 14 to synchronously move in the horizontal direction through the first fixed frame 17, so that the side visual detection structure 16 and the top visual detection structure 15 synchronously move along the horizontal direction of the carrying disc 5, and the steel structure to be detected on the carrying disc 5 can rotate due to the rotation when the carrying disc 5 horizontally moves, so that the side visual detection structure 16 detects different positions on the side surface of the steel structure, and meanwhile, the top visual detection structure 15 detects the top surface of the steel structure;
step five: when the top surface visual detection structure 15 and the side surface visual detection structure 16 respectively complete detection, along with the continuous movement of the first fixed block 4, when the pressing column 13 is no longer in contact with the first movable plate 10, the pressing column 13 does not support the first movable plate 10 any more, at this time, the elastic resetter drives the movable seat 12 to move, so that the first movable plate 10 and the first connecting plate 11 reset the initial position, the first connecting plate 11 drives the first toothed plate 24 to move reversely, so that the first toothed plate 24 drives the friction plate 23 to move towards a direction far away from the friction wheel 8 through the sliding opposite pressing structure, the friction plate 23 can be prevented from contacting the friction wheel 8, the supporting seat 7 and the carrying disc 5 are no longer supported by the ejection lifter, the supporting seat 7 is driven to move downwards through the elastic stop unit, the unlocking component is simultaneously pressed down to apply downward force to the push plate 58, so that the supporting seat 7 and the push plate 58 are lowered to the initial height again, the push plate 58 is ensured not to be in contact with the first fixed frame 17, the limitation on the positions of the first fixed frame 17 and the movable frame 14 is released, the first fixed frame 14 is driven by the sliding opposite pressing structure, the friction plate 23 moves towards the direction far away from the friction wheel 8, and the preset position is detected when the steel fixed frame 5 is placed at the next position, and the preset position is detected, and the steel frame is moved once.
It is noted that relational terms such as first and second, and the like are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Moreover, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.
Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made therein without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (10)
1. The utility model provides a bridge expansion joint steel construction detection device, includes frame (1) and conveyer belt (2), be equipped with on frame (1) and be used for driving actuating mechanism (3) that conveyer belt (2) removed, its characterized in that: fixedly connected with a plurality of first fixed blocks (4) on conveyer belt (2), one side that conveyer belt (2) was kept away from to first fixed block (4) is equipped with carries thing dish (5), carry thing dish (5) on fixedly connected with first pivot (6), the outside cover of first pivot (6) is equipped with supporting seat (7), the junction of first pivot (6) and supporting seat (7) is equipped with the bearing, supporting seat (7) and first fixed block (4) are connected through elastic stop unit, the outside fixed cover of first pivot (6) is equipped with friction pulley (8), and friction pulley (8) are located between supporting seat (7) and first fixed block (4), fixedly connected with fixing base (9) on frame (1), one side of fixing base (9) is equipped with first fly leaf (10) that are located conveyer belt (2) top, the opposite side of fixing base (9) is equipped with fly leaf (12), first fly leaf (10) and fly leaf (12) are connected through two first connecting plates (11), and first connecting plate (11) run through (9) and first connecting plate (12) are equipped with inclined plane and first fixed connection post (13) through elastic stop block (4), the top of first fly leaf (10) is equipped with friction wheel (8) matched with friction plate (23), fixedly connected with first pinion rack (24) on one of them first connecting plate (11), friction plate (23) and first pinion rack (24) are connected through the different push structure of slip, be equipped with on fixing base (9) with supporting seat (7) matched with ejecting riser, the top of conveyer belt (2) is equipped with fly frame (14), fly frame (14) and frame (1) are connected through tensile slider, fixedly connected with top surface visual detection structure (15) on fly frame (14), the both sides of top surface visual detection structure (15) are equipped with side visual detection structure (16) respectively, and side visual detection structure (16) and fly frame (14) fixed connection, the bottom fixedly connected with two first mounts (17) of fly frame (14), both sides of supporting seat (7) are fixedly connected with push pedal (58) respectively, be equipped with on first mount (17) with push pedal (58) matched with the subassembly that pushes down.
2. The bridge expansion joint steel structure detection device according to claim 1, wherein: the push-down unlocking assembly comprises a first fixing plate (18) fixedly mounted on a first fixing frame (17), a pressing plate (19) is arranged below the first fixing plate (18), a limiting plate (20) is arranged above the first fixing plate (18), the pressing plate (19) and the limiting plate (20) are connected through two connecting columns (21), the connecting columns (21) penetrate through the first fixing plate (18), a first compression spring (22) is sleeved outside the connecting columns (21), and two ends of the first compression spring (22) are fixedly connected with the pressing plate (19) and the first fixing plate (18) respectively.
3. The bridge expansion joint steel structure detection device according to claim 1, wherein: the sliding anisotropic pressing structure comprises a second movable plate (29) arranged between a friction plate (23) and a fixed seat (9), a sliding plate (30) is fixedly connected to the second movable plate (29), the sliding plate (30) penetrates through the fixed seat (9), the second movable plate (29) and the friction plate (23) are connected through an elastic force adjusting unit, a gear (25) is arranged on one side of a first toothed plate (24), a second rotating shaft (26) is fixedly connected to the gear (25), a second fixed plate (27) is sleeved outside the second rotating shaft (26), a bearing is arranged at the joint of the second rotating shaft (26) and the second fixed plate (27), the second fixed plate (27) is fixedly connected with the fixed seat (9), a second toothed plate (28) is arranged on one side of the gear (25), the bottoms of the second toothed plate (28) and the second movable plate (29) are fixedly connected, and the first toothed plate (24) and the second toothed plate (28) are meshed with the gear (25) respectively.
4. A bridge expansion joint steel structure detection apparatus according to claim 3, wherein: the elastic force adjusting unit comprises a sliding plate (30) fixedly mounted on a friction plate (23), a sliding groove (31) is formed in a second movable plate (29), an adjusting plate (32) is arranged in the sliding groove (31), one end, away from the friction plate (23), of the sliding plate (30) is located in the sliding groove (31), the sliding plate (30) is connected with the adjusting plate (32) through a plurality of second compression springs (33), rectangular holes (34) are formed in the inner wall of the top of the sliding groove (31), limiting blocks (35) are fixedly connected to the sliding plate (30), the limiting blocks (35) are located in the rectangular holes (34), a screw rod (36) is fixedly connected to the adjusting plate (32), the screw rod (36) penetrates through the second movable plate (29), a second fixing frame (37) is fixedly connected to the second movable plate (29), two nuts (38) are sleeved outside the screw rod (36), and two adjacent nuts (38) are located on two sides of the second fixing frame (37) respectively.
5. The bridge expansion joint steel structure detection device according to claim 1, wherein: the elastic restorer comprises a supporting part (39) fixedly arranged on the movable seat (12), the movable seat (12) is contacted with the fixed seat (9), and the supporting part (39) is connected with the fixed seat (9) through a plurality of first extension springs (40).
6. The bridge expansion joint steel structure detection device according to claim 1, wherein: the ejector lifter comprises a third fixing plate (41) fixedly mounted on a fixing seat (9), an ejector plate (42) penetrates through the third fixing plate (41), a supporting block (43) is fixedly connected to one of the first connecting plates (11), an inclined surface matched with the ejector plate (42) is arranged on the supporting block (43), the bottom end of the ejector plate (42) is contacted with the inclined surface on the supporting block (43), and a first supporting plate (44) matched with the ejector plate (42) is fixedly connected to the supporting seat (7).
7. The bridge expansion joint steel structure detection device according to claim 1, wherein: the stretching sliding piece comprises two second fixed blocks (45) fixedly mounted on the movable frame (14), a third fixed frame (47) is arranged on one side of each second fixed block (45), each third fixed frame (47) is fixedly connected with the frame (1), guide columns (46) penetrate through the second fixed blocks (45), two ends of each guide column (46) are connected with the third fixed frames (47) through second support plates (48), third compression springs (49) are sleeved outside the guide columns (46), and two ends of each third compression spring (49) are fixedly connected with the corresponding second fixed block (45) and one of the second support plates (48).
8. The bridge expansion joint steel structure detection device according to claim 1, wherein: the elastic stop unit comprises at least two movable columns (50) fixedly mounted on a supporting seat (7), a fixed sleeve (51) is sleeved outside the movable columns (50), one end of each fixed sleeve (51) away from the supporting seat (7) is fixedly connected with a first fixed block (4) through a fourth fixed plate (57), the movable columns (50) are connected with the fourth fixed plates (57) through second tension springs (52), one ends of the fixed sleeves (51) away from the fourth fixed plates (57) are in contact with the supporting seat (7), guide grooves (54) are formed in the inner walls of the fixed sleeves (51), guide blocks (53) are arranged in the guide grooves (54), and the guide blocks (53) are fixedly connected with the movable columns (50).
9. The bridge expansion joint steel structure detection device according to claim 1, wherein: two side plates (55) used for limiting the position of the first fixed block (4) are arranged above the frame (1), and the side plates (55) are connected with the frame (1) through a second connecting plate (56).
10. A method for detecting a steel structure of a bridge expansion joint, comprising the device for detecting a steel structure of a bridge expansion joint according to claim 1, characterized in that: the method comprises the following steps:
Step one: the steel structure to be detected is placed on a carrying disc (5) through a feeding mechanism, and the conveying belt (2) is driven to move through a driving mechanism (3), so that a first fixed block (4) positioned on the conveying belt (2) and the carrying disc (5) move;
step two: when a carrying disc (5) with a steel structure to be detected is moved to a preset position, a pressing column (13) on a first fixed block (4) corresponding to the carrying disc is contacted with an inclined surface on a first movable plate (10), the pressing column (13) pushes the first movable plate (10) to move along with continuous movement of the first fixed block (4) and the carrying disc (5), the first movable plate (10) drives a first connecting plate (11) and a movable seat (12) to move, the first connecting plate (11) drives a first toothed plate (24) to move, the first toothed plate (24) drives a friction plate (23) to move towards a friction wheel (8) through a sliding anisotropic pressing structure, and a supporting seat (7) and the carrying disc (5) are driven to synchronously move upwards through an ejection lifter at the moment, and a push plate (58) synchronously moves along with the supporting seat (7);
step three: when one end of the pressing column (13) is contacted with one side of the first movable plate (10) far away from the first connecting plate (11), along with the continuous movement of the pressing column (13), the pressing column (13) does not push the first movable plate (10) and the first connecting plate (11) to move relative to the fixed seat (9), at the moment, the friction plate (23) is driven to press on the friction wheel (8) by the sliding anisotropic pressing structure, meanwhile, the push plate (58) moves to one side of the first fixed frame (17), the push plate (58) is contacted with one side of the first fixed frame (17), and the two side visual detection structures (16) are respectively positioned at two sides of the carrying disc (5);
Step four: along with the continuous movement of the carrying disc (5) and the first fixed block (4), the friction wheel (8) rolls on the friction plate (23) due to friction force, so that the friction wheel (8) drives the first rotating shaft (6) and the carrying disc (5) to rotate, meanwhile, the push plate (58) drives the movable frame (14) to synchronously move in the horizontal direction through the first fixed frame (17), so that the side visual detection structure (16) and the top visual detection structure (15) synchronously move along with the horizontal direction of the carrying disc (5), and the steel structure to be detected on the carrying disc (5) can rotate due to the rotation of the carrying disc (5) when the carrying disc horizontally moves, so that the side visual detection structure (16) detects different positions on the side surface of the steel structure, and meanwhile, the top visual detection structure (15) detects the top surface of the steel structure;
step five: when the top surface visual detection structure (15) and the side surface visual detection structure (16) respectively finish detection, along with the continuous movement of the first fixed block (4), when the pressing column (13) is no longer in contact with the first movable plate (10), the pressing column (13) does not support the first movable plate (10), at the same time, the elastic resetter drives the movable seat (12) to move so as to enable the first movable plate (10) and the first connecting plate (11) to reset to the initial position, the first connecting plate (11) drives the first toothed plate (24) to reversely move so as to enable the first toothed plate (24) to drive the friction plate (23) to move towards a direction away from the friction wheel (8) through the sliding opposite pressing structure, so that the friction plate (23) is no longer in contact with the friction wheel (8), the ejector lifter does not support the supporting seat (7) and the carrier plate (5), the elastic stop unit drives the supporting seat (7) to move downwards, at the same time, the unlocking component applies downward force to the push plate (58) so as to enable the supporting seat (7) and the push plate (58) to move downwards to enable the initial position and the first fixed frame (17) to be in contact with the first fixed frame (17) again, the initial position is not limited by the first fixed frame (17) and the first fixed frame (17) is released from being in contact with the initial position, when the next carrying disc (5) with the steel structure to be detected moves to the preset position, the next detection can be performed.
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| 杨文科;: "现代桥梁伸缩缝结构及特性分析", 山西建筑, no. 30, 20 October 2013 (2013-10-20) * |
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| CN117589688B (en) | 2024-04-09 |
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