Bridge pier maintenance construction platform device with detachable electromagnet-mortise and tenon joint structure connection

Abstract

The invention relates to the technical field of railway pier maintenance, in particular to a detachable electromagnet-mortise and tenon structure connected pier maintenance construction platform device which comprises a movable base and a plurality of folding frames, an extension ladder is arranged on the movable base, a lifting ladder is arranged on the extension ladder, a rotating table is arranged on the lifting ladder, and a hanging bracket is arranged on the rotating table. Each folding frame comprises a rectangular supporting plate, a T-shaped blocking frame and two lateral blocking frames, the rectangular supporting plate is provided with a magnetic attraction limiting piece allowing the two lateral blocking frames and the rectangular supporting plate to form a guardrail frame, and each lateral blocking frame is provided with a plurality of mortise and tenon joint magnetic attraction pieces. The multiple guardrail frames are spliced end to end from the hanging bracket through the mortise and tenon joint magnetic attraction pieces to form a gallery bridge extending forwards in the horizontal direction, and inserting locking pieces are arranged on the T-shaped blocking frames. Maintenance personnel can reach the area where a traditional mechanical suspension arm cannot enter through the gallery bridge, and convenience is provided for maintenance of the pier close to the center of the bridge bottom.

Description

Technical Field

[0001] The present invention relates to the technical field of railway pier maintenance, and in particular to a pier maintenance construction platform device connected by a detachable electromagnet-mortise and tenon structure. Background Art

[0002] Railway bridge piers are structures that support the superstructure of railway bridges. As important supporting structures of railway bridges, the surfaces of railway piers are subject to long-term erosion by wind, rain, and snow. At the same time, railway piers are also subject to long-term loads from trains, which eventually lead to cracks and damage on the railway piers. Therefore, the maintenance of railway piers is particularly important. Traditional pier maintenance platforms have the following defects:

[0003] First, the construction platform in the maintenance device has a small span, making it difficult for the maintenance device installed on the bridge deck to accurately move the construction platform to the damaged part of the bridge pier;

[0004] Secondly, the maintenance platform has a small space. When repairing some major damages on bridge piers, a certain amount of manpower and maintenance equipment are required. Therefore, it is difficult to quickly repair the damaged parts of the bridge piers in the narrow maintenance space.

[0005] Third, the maintenance platform has poor ductility. Some damaged piers may be located far away from the edge of the bridge. Traditional mechanical cranes cannot extend the maintenance platform to distant piers. In addition, the mechanical crane is large in size, which is not conducive to extending between narrow piers. Ultimately, it will be impossible to carry out maintenance work on the piers at the center of the bridge bottom.

[0006] Therefore, in view of the above problems, it is necessary to provide a pier maintenance construction platform device with a detachable electromagnet-mortise and tenon structure connection to solve them. Summary of the Invention

[0007] Based on this, it is necessary to provide a pier maintenance construction platform device with a detachable electromagnet-mortise and tenon structure connection to address the existing technical problems.

[0008] The foldable frame is connected to the movable frame by a movable frame and the movable frame is connected to the movable frame by a movable frame.

[0009] Furthermore, each lateral baffle includes a U-shaped frame and two symmetrical reinforcing ribs. The top of the rectangular support plate is formed with four No. 1 lugs distributed in a matrix. The U-shaped frame is arranged in an inverted state on the top of the rectangular support plate. The two vertical ends of the U-shaped frame are respectively hingedly connected to the corresponding two No. 1 lugs. The top of the rectangular support plate is formed with four groups of No. 2 lugs distributed in a matrix. Each reinforcing rib includes a vertical pole and a horizontal pole. The upper end of the vertical pole is fixedly connected to the horizontal end of the U-shaped frame, and the lower end of the vertical pole is hingedly connected to the corresponding No. 2 lug. The horizontal pole fixes the vertical pole to the vertical end of the U-shaped frame.

[0010] Furthermore, there are four magnetic limiters on each rectangular support plate, and the four magnetic limiters are distributed in a matrix. Each magnetic limiter includes a limit baffle, magnet No. 1 and magnet No. 2. The limit baffle is vertically connected to the rectangular support plate, magnet No. 1 is fixed to the limit baffle, magnet No. 2 is fixed to the corresponding vertical pole, and magnet No. 1 and magnet No. 2 are magnetically matched.

[0011] Furthermore, several mortise and tenon magnetic parts are equidistantly distributed in the vertical direction, and each mortise and tenon magnetic part includes a columnar tenon and an electrically controlled magnetic part. The columnar tenon is fixedly connected to one of the vertical ends of the U-shaped frame, and the other vertical end of the U-shaped frame and the hanger are provided with mortise holes for the corresponding columnar tenon to pass through. The electrically controlled magnetic part includes a No. 1 electromagnet and a No. 1 iron block that cooperate with each other for magnetic attraction. The horizontal end of the U-shaped frame and the hanger are formed with vertically downward mounting columns, the No. 1 electromagnet is fixedly connected to the corresponding mounting column, and the No. 1 iron block is fixedly connected to the columnar tenon.

[0012] Furthermore, an avoidance opening is opened on the side of the rectangular support plate and is located between the two lateral guard frames, and a No. 3 lug is formed on the avoidance opening, and the vertical end of the T-shaped guard frame is hingedly connected to the No. 3 lug. A downwardly protruding boss is formed on the bottom of the rectangular support plate, and a No. 3 magnet is fixed on the boss, and a No. 4 magnet that is magnetically attracted to the No. 3 magnet is fixed on the T-shaped guard frame, and a through opening is opened downward on the top of the rectangular support plate.

[0013] Furthermore, there are two plug-in locks on the T-shaped baffle, and the two plug-in locks are symmetrically arranged on the horizontal ends of the T-shaped baffle. Each plug-in lock includes a horizontal pin and a No. 1 spring. A horizontal bar-shaped accommodating groove is opened inward on the end of the horizontal end of the T-shaped baffle, and a horizontal block is formed on the pin that slides in the bar-shaped accommodating groove. The No. 1 spring is horizontally arranged in the bar-shaped accommodating groove, and the No. 1 spring drives the pin to extend outward by contacting the horizontal block. A slot for inserting the corresponding pin is opened on the side wall of each U-shaped frame.

[0014] Furthermore, the bottom of the rectangular support plate is formed with a plurality of strip sockets equidistantly distributed in the horizontal direction, a strip support plate is slidably provided in each strip socket, and a fixing rod fixedly connected to the rectangular support plate is provided on the side of each strip socket, and the fixing rod is parallel to the strip socket. The bottom of the rectangular support plate is formed with a strip baffle perpendicular to the strip socket, a sliding sleeve connected to the strip support plate is provided on the fixing rod, and a No. 2 spring is provided on the fixing rod between the sliding sleeve and the strip baffle, and a plurality of strip support plates extending outward in the horizontal direction are fixedly provided at the bottom of the hanger.

[0015] Furthermore, a storage slot is provided on the horizontal end of each U-shaped frame, and a rotating block is rotatably arranged in the storage slot. One end of the rotating block is a hollow structure, and the other end is a solid structure. The hollow end of the rotating block is connected to a No. 1 lifting ear, and a high frame is formed on the hanger. Several groups of No. 2 lifting ears equidistantly distributed in the vertical direction are fixed on the high frame. A sliding rod is connected to the horizontal end of each U-shaped frame for sliding in the horizontal direction, and a columnar groove for the sliding rod to pass through is provided on the solid end of the rotating block.

[0016] Furthermore, a vertical downward mounting seat is formed on the horizontal end of each U-shaped frame, and a No. 2 electromagnet is fixed in the mounting seat. A No. 2 iron block that magnetically cooperates with the No. 2 electromagnet is fixed on the end of each sliding rod.

[0017] Furthermore, a vertical bracket is fixedly provided on the top of the movable base, a telescopic ladder is provided on the top of the vertical bracket, and a climbing ladder extending in a vertical direction is formed on the vertical bracket.

[0018] Compared with the prior art, the present invention has the following beneficial effects:

[0019] First, the construction platform of this device consists of a hanger and several folding frames. Maintenance personnel can unfold a specified number of folding frames according to actual conditions to form a guardrail frame. Then, they can sequentially connect several guardrail frames from the hanger end to end, ultimately forming a corridor bridge for maintenance personnel to directly reach the damaged part of the bridge pier. The corridor bridge enables maintenance personnel to reach areas that traditional mechanical cranes cannot enter, providing convenience for repairing bridge piers near the center of the bridge bottom.

[0020] Secondly, when the bridge is not in use, it can be disassembled and folded into a folding frame for storage, thereby reducing the space and weight of the construction platform and improving the speed and stability of the construction platform during movement. When the bridge is in use, the mortise and tenon magnetic parts can be used to achieve rapid splicing of the bridge, improving maintenance efficiency.

[0021] Thirdly, by splicing the corridor bridge on the hanger, the construction space can be expanded. During maintenance, the larger construction space can provide great convenience for maintenance personnel, effectively reducing problems such as cross-process conflicts and obstruction of material transportation caused by the limited space during construction. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 This is a schematic diagram of the three-dimensional structure of the present invention when not in operation;

[0023] Figure 2 This is a schematic diagram of the three-dimensional structure of the present invention when it is working;

[0024] Figure 3 yes Figure 2 A1 is a partial enlarged schematic diagram;

[0025] Figure 4 yes Figure 2 A2 is a partial enlarged schematic diagram;

[0026] Figure 5 yes Figure 2 A3 is a partial enlarged schematic diagram;

[0027] Figure 6 It is a three-dimensional structural cross-sectional view of the U-shaped frame when it is spliced;

[0028] Figure 7 yes Figure 6 A4 is a partial enlarged schematic diagram;

[0029] Figure 8 yes Figure 6 A5 is an enlarged schematic diagram of the part indicated by A5;

[0030] Figure 9 It is a schematic diagram of the three-dimensional structure of the guardrail frame;

[0031] Figure 10It is a three-dimensional structural cross-sectional view of the vertical pole and the limit baffle;

[0032] Figure 11 yes Figure 10 A6 is an enlarged schematic diagram of the part indicated by A6;

[0033] Figure 12 This is a sectional view of the three-dimensional structure of the strip sleeve when it is spliced ​​between the hanger and the guardrail frame;

[0034] Figure 13 yes Figure 12 A partial enlarged schematic diagram indicated by A7;

[0035] Figure 14 It is a three-dimensional structural cross-sectional view of the T-shaped baffle when it is unfolded;

[0036] Figure 15 yes Figure 14 A partial enlarged schematic diagram indicated by A8;

[0037] Figure 16 This is a sectional view of the three-dimensional structure of the boss when it is stored in the T-shaped retaining frame;

[0038] Figure 17 yes Figure 16 A9 in the figure shows an enlarged view of the area

[0039] Figure 18 It is a three-dimensional structural diagram of a folding frame.

[0040] The numbers in the figure are: 1. Mobile base; 2. Folding frame; 3. Telescopic ladder; 4. Lifting ladder; 5. Rotating table; 6. Hanging frame; 7. Rectangular support plate; 8. T-shaped blocking frame; 9. Lateral blocking frame; 10. Guardrail frame; 11. Mortise and tenon magnetic attraction piece; 12. Corridor bridge; 13. U-shaped frame; 14. No. 1 lug; 15. No. 2 lug; 16. Vertical pole; 17. Crossbar; 18. Limit baffle; 19. No. 1 magnet; 20. No. 2 magnet; 21. Columnar tenon; 22. Mortise; 23. No. 1 electromagnet; 24. No. 1 iron block; 25. Mounting column; 26. Avoidance; 27. No. 3 lug; 28. Boss; 29 , magnet No. 3; 31. magnet No. 4; 32. through-hole; 33. latch; 34. spring No. 1; 35. bar-shaped receiving groove; 36. horizontal block; 37. slot; 38. bar-shaped sleeve; 39. bar-shaped support plate; 40. fixing rod; 41. bar-shaped baffle; 42. sliding sleeve; 43. spring No. 2; 44. bar-shaped support plate; 45. storage slot; 46. rotating block; 47. lifting ear No. 1; 48. overhead frame; 49. lifting ear No. 2; 50. sliding rod; 51. columnar groove; 52. mounting seat; 53. electromagnet No. 2; 54. iron block No. 2; 55. vertical bracket; 56. ladder; 57. pull rope. DETAILED DESCRIPTION

[0041] In order to further understand the features, technical means, specific objectives and functions achieved by the present invention, the present invention is further described in detail below with reference to the accompanying drawings and specific embodiments.

[0042] refer to Figures 1 to 18 The bridge pier maintenance construction platform device shown in the figure is connected with a detachable electromagnet-mortise and tenon structure, comprising a mobile base 1 and a plurality of folding frames 2. The mobile base 1 is provided with a telescopic ladder 3 that slides in the horizontal direction, the telescopic ladder 3 is provided with a lifting ladder 4, the lifting ladder 4 is provided with a rotating platform 5, and the rotating platform 5 is provided with a hanger 6. Each folding frame 2 includes a rectangular support plate 7, a T-shaped block frame 8 and two side blocks 9. The rectangular support plate 7 is horizontally arranged, and the two side blocks 9 are symmetrically hinged to the rectangular support plate 7. The rectangular support plate 7 is provided with a magnetic limiter for keeping the two lateral guard frames 9 vertical and forming a guardrail frame 10 with the rectangular support plate 7. Each lateral guard frame 9 is provided with a number of mortise and tenon magnetic parts 11. Several guardrail frames 10 are spliced ​​end to end from the hanger 6 through the mortise and tenon magnetic parts 11 to form a corridor bridge 12 extending forward in the horizontal direction. The T-shaped guard frame 8 is hingedly connected to the rectangular support plate 7. The T-shaped guard frame 8 is arranged between the two lateral guard frames 9. The T-shaped guard frame 8 is provided with a plug-in lock that connects it to the two lateral guard frames 9.

[0043] The repair process of the damaged pier is as follows: the mobile base 1 moves to the top of the damaged pier through the bridge deck. At this time, the lifting ladder 4 is in the upper state and the telescopic ladder 3 is in the retracted state. The maintenance personnel can directly enter the hanger 6 through the mobile base 1. After the maintenance personnel enter the hanger 6, the telescopic ladder 3 extends outward from the bridge deck, allowing the maintenance personnel on the hanger 6 to cross the bridge deck and hang in the air. Thereafter, the lifting ladder 4 begins to descend, allowing the maintenance personnel on the hanger 6 to gradually approach the pier under the bridge deck. When the hanger 6 descends to the damaged part near the pier, if the maintenance personnel are still away from the pier, If the damaged part is far away, the maintenance personnel can unfold the folding frame 2 to form a guardrail frame 10 and connect them end to end to form a covered bridge 12. Finally, the maintenance personnel can move to the damaged part of the bridge pier through the covered bridge 12 to carry out maintenance. Among them, the rotating platform 5 is used to drive the entire covered bridge 12 to rotate through the hanger 6, so that the maintenance personnel on the covered bridge 12 can quickly close the distance to the damaged part of the bridge pier. In special circumstances (for example, the operating system of the elevator 4 and the telescopic ladder 3 is paralyzed), the maintenance personnel can climb up to the bridge deck along the elevator 4 and the telescopic ladder 3 from the hanger 6;

[0044] The splicing process of the covered bridge 12 is as follows: first, the two lateral retaining frames 9 on the rectangular support plate 7 are flipped upward to be vertical, and then the two lateral retaining frames 9 are kept in a vertical state through the magnetic limiter to form a guardrail frame 10 with the rectangular support plate 7. In the actual splicing process, the number of guardrail frames 10 is determined according to the distance between the hanger 6 and the damaged part of the pier. When the number of guardrail frames 10 is determined, one of the guardrail frames 10 is first fixed to the hanger 6 through the mortise and tenon magnetic member 11, and then the remaining guardrail frames 10 are fixed to the hanger 6 through the mortise and tenon magnetic member 11. The guardrail frames 10 on the hanger 6 are connected end to end in sequence, and finally the hanger 6 and several guardrail frames 10 form a corridor 12 for maintenance personnel to walk on. When the last guardrail frame 10 is installed, the T-shaped block frame 8 on the tail guardrail frame 10 is flipped upward. During the upward flipping process of the T-shaped block frame 8, the T-shaped block frame 8 is connected to the two side blocks 9 by plug-in locks, and finally the opening on the tail guardrail frame 10 is blocked by the T-shaped block frame 8 to prevent maintenance personnel from falling from the tail guardrail frame 10.

[0045] The storage process of the guardrail frame 10 is as follows: the guardrail frames 10 connected at the head and tail are removed in turn, and then the two side guardrail frames 9 on the guardrail frame 10 are flipped downward to be horizontal and close to the top of the rectangular support plate 7, and finally the T-shaped guardrail frame 8 on the tail end guardrail frame 10 is flipped downward to be horizontal and close to the bottom of the rectangular support plate 7. Among them, when splicing the corridor bridge 12, except for the guardrail frame 10 at the tail end, the T-shaped guardrail frames 8 on the remaining guardrail frames 10 are all in a storage state close to the bottom of the rectangular support plate 7.

[0046] In order to show the specific structure of the lateral block 9, the following features are set:

[0047] Each lateral baffle 9 includes a U-shaped frame 13 and two symmetrical reinforcing ribs. The top of the rectangular support plate 7 is formed with four No. 1 lugs 14 distributed in a matrix. The U-shaped frame 13 is arranged on the top of the rectangular support plate 7 in an inverted state. The two vertical ends of the U-shaped frame 13 are hingedly connected to the corresponding two No. 1 lugs 14. The top of the rectangular support plate 7 is formed with four groups of No. 2 lugs 15 distributed in a matrix. Each reinforcing rib includes a vertical rod 16 and a horizontal rod 17. The upper end of the vertical rod 16 is fixedly connected to the horizontal end of the U-shaped frame 13, and the lower end of the vertical rod 16 is hingedly connected to the corresponding No. 2 lug 15. The cross rod 17 fixes the vertical rod 16 to the vertical end of the U-shaped frame 13.

[0048] The U-shaped frame 13 is rotated by being hingedly connected to the No. 1 lug 14, and the reinforcing rib is rotated by being hingedly connected to the No. 2 lug 15. During actual processing, each No. 1 lug 14 and No. 2 lug 15 protrudes upward and has a certain length. The No. 1 lug 14 and No. 2 lug 15 under one lateral baffle 9 are higher than the No. 1 lug 14 and No. 2 lug 15 under the other lateral baffle 9. Therefore, when the guardrail frame 10 is folded, one of the lateral baffles 9 can be flipped downward to a horizontal position and then superimposed on the other lateral baffle 9, so that the folding frame 2 is in a flat superimposed state.

[0049] In order to show the specific structure of the magnetic limiter, the following features are set:

[0050] There are four magnetic limiters on each rectangular support plate 7, and the four magnetic limiters are distributed in a matrix. Each magnetic limiter includes a limit baffle 18, a No. 1 magnet 19 and a No. 2 magnet 20. The limit baffle 18 is vertically fixed to the rectangular support plate 7, the No. 1 magnet 19 is fixed to the limit baffle 18, the No. 2 magnet 20 is fixed to the corresponding vertical rod 16, and the No. 1 magnet 19 and the No. 2 magnet 20 are magnetically coupled.

[0051] During the process of unfolding the folding frame 2 to form the guardrail frame 10, each lateral baffle 9 is flipped upward from horizontal to vertical. At this time, the rotation stroke of the lateral baffle 9 is limited by the limit baffle 18 corresponding to the vertical rod 16 to ensure that the lateral baffle 9 can be flipped to vertical. At the same time, the vertical rod 16 is fixedly connected to the limit baffle 18 through the magnetic attraction of the No. 1 magnet 19 and the No. 2 magnet 20, ultimately preventing the lateral baffle 9 from flipping downward by itself.

[0052] In order to show the specific structure of the mortise and tenon magnetic attraction member 11, the following features are set:

[0053] Several mortise and tenon magnetic parts 11 are equidistantly distributed in the vertical direction, and each mortise and tenon magnetic part 11 includes a columnar tenon 21 and an electrically controlled magnetic part. The columnar tenon 21 is fixedly connected to one of the vertical ends of the U-shaped frame 13. The other vertical end of the U-shaped frame 13 and the hanger 6 are provided with a mortise hole 22 for the corresponding columnar tenon 21 to pass through. The electrically controlled magnetic part includes a No. 1 electromagnet 23 and a No. 1 iron block 24 that cooperate with each other in magnetic attraction. A vertical downward mounting column 25 is formed on the horizontal end of the U-shaped frame 13 and the hanger 6. The No. 1 electromagnet 23 is fixedly connected to the corresponding mounting column 25, and the No. 1 iron block 24 is fixedly connected to the columnar tenon 21.

[0054] When the two lateral guard frames 9 are flipped upward to become vertical so that the folding frame 2 becomes a guardrail frame 10, first one of the guardrail frames 10 is fixedly connected to the hanger 6. During this process, the columnar tenon 21 on the lateral guard frame 9 is passed through the corresponding mortise 22. Thereafter, the No. 1 electromagnet 23 is energized, and the No. 1 electromagnet 23 will adsorb the No. 1 iron block 24, and finally the columnar tenon 21 is magnetically connected to the mounting column 25. After one of the guardrail frames 10 is fixedly connected to the hanger 6, the remaining guardrail frames 10 are spliced ​​end to end in sequence. The splicing process is consistent with the process of fixing the guardrail frame 10 to the hanger 6.

[0055] In order to show how the T-shaped block 8 maintains a horizontal state, the following features are set:

[0056] A side opening 26 is provided on the side of the rectangular support plate 7, which is located between the two lateral retaining frames 9. A No. 3 lug 27 is formed on the side opening 26. The vertical end of the T-shaped retaining frame 8 is hingedly connected to the No. 3 lug 27. A downwardly protruding boss 28 is formed on the bottom of the rectangular support plate 7. A No. 3 magnet 29 is fixed on the boss 28. A No. 4 magnet 31 that is magnetically attracted to the No. 3 magnet 29 is fixed on the T-shaped retaining frame 8. A through opening 32 is provided downwardly on the top of the rectangular support plate 7.

[0057] The T-shaped block 8 is hingedly connected to the third lug 27 to achieve rotation, so that the T-shaped block 8 can be flipped downward to be horizontal and stored at the bottom of the rectangular support plate 7. When the T-shaped block 8 is stored, the T-shaped block 8 is fixedly connected to the rectangular support plate 7 through the magnetic attraction of the third magnet 29 and the fourth magnet 31, ultimately ensuring that the T-shaped block 8 can remain in the stored state. When the T-shaped block 8 needs to be unfolded, the maintenance personnel can push the T-shaped block 8 downward through the through-hole 32 to separate the T-shaped block 8 from the bottom of the rectangular support plate 7, and finally flip the T-shaped block 8 upward to be vertically connected to the two lateral blocks 9.

[0058] In order to show the specific structure of the plug-in lock, the following features are set:

[0059] There are two plug-in locks on the T-shaped baffle 8, and the two plug-in locks are symmetrically arranged on the horizontal ends of the T-shaped baffle 8. Each plug-in lock includes a horizontal pin 33 and a No. 1 spring 34. A horizontal bar-shaped receiving groove 35 is provided inwardly on the end of the horizontal end of the T-shaped baffle 8. A transverse block 36 that slides in the bar-shaped receiving groove 35 is formed on the pin 33. The No. 1 spring 34 is horizontally arranged in the bar-shaped receiving groove 35, and the No. 1 spring 34 drives the pin 33 to extend outward by contacting the transverse block 36. A slot 37 for inserting the corresponding pin 33 is provided on the side wall of each U-shaped frame 13.

[0060] In the process of flipping the T-shaped block 8 at the bottom of the rectangular support plate 7 upward to be vertical, the horizontal block 36 is pushed inward to drive the pin 33 to retract. At this time, the horizontal block 36 will compress the No. 1 spring 34, causing the No. 1 spring 34 to generate elastic force. When the T-shaped block 8 is completely vertical, the horizontal block 36 is released. At this time, the No. 1 spring 34 will release the elastic force and drive the pin 33 to be inserted into the corresponding slot 37 through the horizontal block 36. Finally, the T-shaped block 8 will be connected to the two lateral blocks 9 through the two pins 33 on its horizontal end.

[0061] In order to improve the stability of the rectangular support plate 7, the following features are provided:

[0062] The bottom of the rectangular support plate 7 is formed with several strip sockets 38 equidistantly distributed in the horizontal direction, and a strip support plate 39 is slidably provided in each strip socket 38. A fixing rod 40 is provided on the side of each strip socket 38 and is fixedly connected to the rectangular support plate 7. The fixing rod 40 is parallel to the strip socket 38. The bottom of the rectangular support plate 7 is formed with a strip baffle 41 perpendicular to the strip socket 38. A sliding sleeve 42 connected to the strip support plate 39 is provided on the fixing rod 40. A No. 2 spring 43 is provided between the sliding sleeve 42 and the strip baffle 41 and is sleeved on the fixing rod 40. The bottom of the hanger 6 is fixed with several strip support plates 44 that extend outward in the horizontal direction.

[0063] When the two lateral retaining frames 9 are flipped upward to be vertical so that the folding frame 2 becomes a guardrail frame 10, one of the guardrail frames 10 is first spliced ​​with the hanger 6. When splicing, the strip support plate 44 on the hanger 6 is inserted into the corresponding strip plug sleeve 38. During this process, the strip support plate 44 inserted into the strip plug sleeve 38 will push the strip support plate 39 to extend outward. When the strip support plate 39 extends outward, the sliding sleeve 42 will compress the No. 2 spring 43, so that the No. 2 spring 43 generates elastic force. When the rectangular support plate 7 conflicts with the hanger 6, the strip support plate 44 is completely inserted into the strip plug sleeve 38. At this time, one end of the strip support plate 39 will be out of the rectangular support plate 7. In addition, the current guardrail frame 10 is fixedly connected to the hanger 6 through the mortise and tenon magnetic parts 11. After one of the guardrail frames 10 is fixedly connected to the hanger 6, the remaining guardrail frames 10 are connected end to end and spliced ​​in sequence. During splicing, the strip support plate 39 on the rear guardrail frame 10 will be inserted into the strip socket 38 on the front guardrail frame 10. Finally, each rectangular support plate 7 will be assisted and supported by the strip support plate 39 at its bottom. Among them, when the guardrail frames 10 are connected to each other through the mortise and tenon magnetic parts 11, the front strip support plate 39 will always be pressed toward the rear strip support plate 39 through the No. 2 spring 43, ultimately preventing the strip support plate 39 from loosening.

[0064] To prevent the covered bridge 12 from collapsing, the following features are provided:

[0065] A receiving groove 45 is provided on the horizontal end of each U-shaped frame 13, and a rotating block 46 is rotatably provided in the receiving groove 45. One end of the rotating block 46 is a hollow structure and the other end is a solid structure. A No. 1 lifting ear 47 is connected to the hollow end of the rotating block 46, and a high frame 48 is formed on the hanger 6. Several groups of No. 2 lifting ears 49 equidistantly distributed in the vertical direction are fixed on the high frame 48. A sliding rod 50 is connected to the horizontal end of each U-shaped frame 13 in a horizontal sliding direction, and a columnar groove 51 for the sliding rod 50 to pass through is provided on the solid end of the rotating block 46.

[0066] When the guardrail frame 10 is stored to become the folding frame 2, each rotating block 46 stores the corresponding No. 1 ear 47 into the storage slot 45 by rotating. When the folding frame 2 is unfolded to become the guardrail frame 10, the No. 1 ear 47 is rotated upward by the rotating block 46, and then the slide rod 50 is slid through the columnar groove 51 on the rotating block 46 to limit the rotation of the rotating block 46 by the slide rod 50. After the guardrail frames 10 are connected to each other by the mortise and tenon magnetic parts 11, a pull rope 57 is connected between the No. 1 ear 47 and the corresponding No. 2 ear 49, so that the two pull ropes 57 are used to assist in stabilizing the guardrail frame 10 to prevent the corridor bridge 12 formed by splicing several guardrail frames 10 from collapsing.

[0067] In order to prevent the slide bar 50 from sliding backward, the following features are provided:

[0068] A vertical downward mounting seat 52 is formed on the horizontal end of each U-shaped frame 13, and a second electromagnet 53 is fixed in the mounting seat 52. A second iron block 54 that magnetically cooperates with the second electromagnet 53 is fixed on the end of each slide rod 50.

[0069] When the slide bar 50 passes through the cylindrical slot 51, the second iron block 54 on the slide bar 50 will gradually approach the second electromagnet 53 in the mounting seat 52. At this time, the second electromagnet 53 is energized, so that the slide bar 50 will be stably adsorbed on the mounting seat 52 through magnetic attraction, ultimately preventing the slide bar 50 from sliding backward.

[0070] In order to make the hanger 6 have a certain initial height, the following features are set:

[0071] A vertical bracket 55 is fixedly provided on the top of the mobile base 1 , and the telescopic ladder 3 is arranged on the top of the vertical bracket 55 . A climbing ladder 56 extending in the vertical direction is formed on the vertical bracket 55 .

[0072] The vertical bracket 55 provides the hanger 6 with a certain initial height. Under the premise of ensuring that the hanger 6 can be lowered to the bridge pier, the length of the elevator 4 is reduced and the stability of the elevator 4 is improved. The ladder 56 provided on the vertical bracket 55 is used for maintenance personnel to climb from the telescopic ladder 3 to the mobile base 1. In actual use, the telescopic ladder 3 and the mobile base 1 are both provided with counterweight blocks (not shown in the figure). The counterweight blocks are used to prevent the center of gravity of the hanger 6 from shifting after being extended, causing the entire mobile base 1 to tip toward the hanger 6.

[0073] Working principle:

[0074] The repair process of the damaged pier is as follows: the mobile base 1 moves to the top of the damaged pier through the bridge deck. At this time, the lifting ladder 4 is in the upper state and the telescopic ladder 3 is in the retracted state. The maintenance personnel can directly enter the hanger 6 through the mobile base 1. After the maintenance personnel enter the hanger 6, the telescopic ladder 3 extends outward from the bridge deck, allowing the maintenance personnel on the hanger 6 to cross the bridge deck and hang in the air. Thereafter, the lifting ladder 4 begins to descend, allowing the maintenance personnel on the hanger 6 to gradually approach the pier under the bridge deck. When the hanger 6 descends to the damaged part near the pier, if the maintenance personnel are still away from the pier, If the damaged part is far away, the maintenance personnel can unfold the folding frame 2 to form a guardrail frame 10 and connect them end to end to form a covered bridge 12. Finally, the maintenance personnel can move to the damaged part of the bridge pier through the covered bridge 12 to carry out maintenance. Among them, the rotating platform 5 is used to drive the entire covered bridge 12 to rotate through the hanger 6, so that the maintenance personnel on the covered bridge 12 can quickly close the distance to the damaged part of the bridge pier. In special circumstances (for example, the operating system of the elevator 4 and the telescopic ladder 3 is paralyzed), the maintenance personnel can climb up to the bridge deck along the elevator 4 and the telescopic ladder 3 from the hanger 6;

[0075] The splicing process of the covered bridge 12 is as follows: first, the two lateral retaining frames 9 on the rectangular support plate 7 are flipped upward to be vertical, and then the two lateral retaining frames 9 are kept in a vertical state through the magnetic limiter to form a guardrail frame 10 with the rectangular support plate 7. In the actual splicing process, the number of guardrail frames 10 is determined according to the distance between the hanger 6 and the damaged part of the pier. When the number of guardrail frames 10 is determined, one of the guardrail frames 10 is first fixed to the hanger 6 through the mortise and tenon magnetic member 11, and then the remaining guardrail frames 10 are fixed to the hanger 6 through the mortise and tenon magnetic member 11. The guardrail frames 10 on the hanger 6 are connected end to end in sequence, and finally the hanger 6 and several guardrail frames 10 form a corridor 12 for maintenance personnel to walk on. When the last guardrail frame 10 is installed, the T-shaped block frame 8 on the tail guardrail frame 10 is flipped upward. During the upward flipping process of the T-shaped block frame 8, the T-shaped block frame 8 is connected to the two side blocks 9 by plug-in locks, and finally the opening on the tail guardrail frame 10 is blocked by the T-shaped block frame 8 to prevent maintenance personnel from falling from the tail guardrail frame 10.

[0076] The storage process of the guardrail frame 10 is as follows: the guardrail frames 10 connected at the head and tail are removed in turn, and then the two side guardrail frames 9 on the guardrail frame 10 are flipped downward to be horizontal and close to the top of the rectangular support plate 7, and finally the T-shaped guardrail frame 8 on the tail end guardrail frame 10 is flipped downward to be horizontal and close to the bottom of the rectangular support plate 7. Among them, when splicing the corridor bridge 12, except for the guardrail frame 10 at the tail end, the T-shaped guardrail frames 8 on the remaining guardrail frames 10 are all in a storage state close to the bottom of the rectangular support plate 7.

[0077] The above embodiments merely represent one or several implementations of the present invention, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the present invention. It should be noted that a person skilled in the art would be able to make various modifications and improvements without departing from the spirit of the present invention, and these modifications and improvements fall within the scope of protection of the present invention. Therefore, the scope of protection of the present invention shall be determined by the appended claims.

Claims

1. A detachable electromagnet-mortise and tenon structure connected bridge pier maintenance construction platform device, characterized in that: The invention comprises a mobile base (1) and a plurality of folding frames (2). The mobile base (1) is provided with a telescopic ladder (3) which slides in a horizontal direction. The telescopic ladder (3) is provided with a lifting ladder (4). The lifting ladder (4) is provided with a rotating platform (5). The rotating platform (5) is provided with a hanger (6). Each folding frame (2) comprises a rectangular support plate (7), a T-shaped retaining frame (8) and two lateral retaining frames (9). The rectangular support plate (7) is horizontally arranged. The two lateral retaining frames (9) are symmetrically hinged to the rectangular support plate (7). The rectangular support plate (7) is provided with a plurality of lateral retaining frames (9). The guard frame (9) is kept vertical and forms a magnetic limiter of the guardrail frame (10) with the rectangular support plate (7). Each lateral guard frame (9) is provided with a plurality of mortise and tenon magnetic members (11). The plurality of guardrail frames (10) are spliced ​​end to end from the hanger (6) through the mortise and tenon magnetic members (11) to form a corridor bridge (12) extending forward in the horizontal direction. The T-shaped guard frame (8) is hingedly connected to the rectangular support plate (7). The T-shaped guard frame (8) is provided between the two lateral guard frames (9). The T-shaped guard frame (8) is provided with a plug lock connecting it to the two lateral guard frames (9).

2. A detachable electromagnet-mortise and tenon structure connected bridge pier maintenance construction platform device according to claim 1, characterized in that: Each lateral retaining frame (9) comprises a U-shaped frame (13) and two symmetrical reinforcing ribs. The top of the rectangular support plate (7) is formed with four No. 1 lugs (14) distributed in a matrix. The U-shaped frame (13) is arranged on the top of the rectangular support plate (7) in an inverted state. The two vertical ends of the U-shaped frame (13) are respectively hingedly connected to the corresponding two No. 1 lugs (14). The top of the rectangular support plate (7) is formed with four groups of No. 2 lugs (15) distributed in a matrix. Each reinforcing rib comprises a vertical rod (16) and a horizontal rod (17). The upper end of the vertical rod (16) is fixedly connected to the horizontal end of the U-shaped frame (13), and the lower end of the vertical rod (16) is hingedly connected to the corresponding No. 2 lug (15). The horizontal rod (17) fixes the vertical rod (16) to the vertical end of the U-shaped frame (13).

3. The detachable electromagnet-mortise and tenon structure bridge pier maintenance construction platform device according to claim 2, characterized in that: The number of magnetic limiting members on each rectangular support plate (7) is four, and the four magnetic limiting members are distributed in a matrix. Each magnetic limiting member includes a limiting baffle (18), a first magnet (19) and a second magnet (20). The limiting baffle (18) is vertically fixed to the rectangular support plate (7), the first magnet (19) is fixed to the limiting baffle (18), the second magnet (20) is fixed to the corresponding vertical rod (16), and the first magnet (19) and the second magnet (20) are magnetically matched.

4. The detachable electromagnet-mortise and tenon structure bridge pier maintenance construction platform device according to claim 2, characterized in that: A plurality of mortise and tenon magnetic attracting parts (11) are distributed equidistantly in the vertical direction, and each mortise and tenon magnetic attracting part (11) comprises a columnar tenon (21) and an electrically controlled magnetic attracting part, the columnar tenon (21) is fixedly connected to one vertical end of the U-shaped frame (13), the other vertical end of the U-shaped frame (13) and the hanger (6) are provided with a mortise hole (22) for the corresponding columnar tenon (21) to pass through, the electrically controlled magnetic attracting part comprises a No. 1 electromagnet (23) and a No. 1 iron block (24) that are magnetically matched, the horizontal end of the U-shaped frame (13) and the hanger (6) are formed with a vertical downward mounting column (25), the No. 1 electromagnet (23) is fixedly connected to the corresponding mounting column (25), and the No. 1 iron block (24) is fixedly connected to the columnar tenon (21).

5. The detachable electromagnet-mortise and tenon structure bridge pier maintenance construction platform device according to claim 1, characterized in that: A side of the rectangular support plate (7) is provided with an escape opening (26) located between the two lateral retaining frames (9), a No. 3 lug (27) is formed on the escape opening (26), a vertical end of the T-shaped retaining frame (8) is hingedly connected to the No. 3 lug (27), a bottom of the rectangular support plate (7) is provided with a downwardly protruding boss (28), a No. 3 magnet (29) is fixedly provided on the boss (28), a No. 4 magnet (31) that is magnetically matched with the No. 3 magnet (29) is fixedly provided on the T-shaped retaining frame (8), and a through opening (32) is provided downwardly on the top of the rectangular support plate (7).

6. The detachable electromagnet-mortise and tenon structure bridge pier maintenance construction platform device according to claim 2, characterized in that: There are two plug locks on the T-shaped retaining frame (8), and the two plug locks are symmetrically arranged on the horizontal ends of the T-shaped retaining frame (8). Each plug lock comprises a horizontal latch (33) and a No. 1 spring (34). A horizontal strip-shaped receiving groove (35) is provided inwardly on the end of the horizontal end of the T-shaped retaining frame (8). A transverse block (36) is formed on the latch (33) and slides in the strip-shaped receiving groove (35). The No. 1 spring (34) is horizontally arranged in the strip-shaped receiving groove (35), and the No. 1 spring (34) drives the latch (33) to extend outward by contacting the transverse block (36). A slot (37) for inserting the corresponding latch (33) is provided on the side wall of each U-shaped frame (13).

7. The detachable electromagnet-mortise and tenon structure bridge pier maintenance construction platform device according to claim 1, characterized in that: The bottom of the rectangular support plate (7) is formed with a plurality of strip sockets (38) equidistantly distributed in the horizontal direction, and a strip support plate (39) is slidably provided in each strip socket (38). A fixing rod (40) fixedly connected to the rectangular support plate (7) is provided on the side of each strip socket (38). The fixing rod (40) is parallel to the strip socket (38). The bottom of the rectangular support plate (7) is formed with a strip baffle (41) perpendicular to the strip socket (38). A sliding sleeve (42) connected to the strip support plate (39) is provided on the fixing rod (40). A No. 2 spring (43) is provided between the sliding sleeve (42) and the strip baffle (41) and is sleeved on the fixing rod (40). The bottom of the hanger (6) is fixed with a plurality of strip support plates (44) extending outward in the horizontal direction.

8. The detachable electromagnet-mortise and tenon structure bridge pier maintenance construction platform device according to claim 2, characterized in that: A receiving slot (45) is provided on the horizontal end of each U-shaped frame (13), a rotating block (46) is rotatably provided in the receiving slot (45), one end of the rotating block (46) is a hollow structure, and the other end is a solid structure. A first hanging ear (47) is connected to the hollow end of the rotating block (46), and an overhead frame (48) is formed on the hanger (6). A plurality of second hanging ears (49) equidistantly distributed in the vertical direction are fixed on the overhead frame (48). A slide rod (50) is slidably connected to the horizontal end of each U-shaped frame (13), and a columnar groove (51) for the slide rod (50) to pass through is provided on the solid end of the rotating block (46).

9. The detachable electromagnet-mortise and tenon structure bridge pier maintenance construction platform device according to claim 8, characterized in that: A mounting seat (52) extending vertically downward is formed on the horizontal end of each U-shaped frame (13), a second electromagnet (53) is fixedly provided in the mounting seat (52), and a second iron block (54) magnetically matched with the second electromagnet (53) is fixedly provided on the end of each slide bar (50).

10. The detachable electromagnet-mortise and tenon structure bridge pier maintenance construction platform device according to claim 1, characterized in that: A vertical bracket (55) is fixedly provided on the top of the mobile base (1), a telescopic ladder (3) is provided on the top of the vertical bracket (55), and a climbing ladder (56) extending in a vertical direction is formed on the vertical bracket (55).

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