High-altitude operation protection device for airport fast rail

Abstract

The invention belongs to the technical field of protection, and particularly relates to a high-altitude operation protection device for an airport fast rail, which comprises a fence for bearing workers, the fence adopts a ventilation structure, and the high-altitude operation protection device is characterized in that four baffle plates are arranged in the fence in a sliding manner and are used for blocking gaps of the fence; sparks generated during welding are prevented from falling on the body of a worker through gaps of the fence, and the four baffles are located in the four side faces of the fence correspondingly. Before use, an operator enters the fence, then the fence and the operator are lifted to the position, needing to be welded, of the steel box girder through the sling device, and before welding, the baffle close to one side of the welding position slides to block gaps of the fence, so that the problem that sparks and splashes fall on the body of the operator through the gaps of the fence is solved; and the protection effect is achieved, and the safety risk of operators during operation is reduced.

Description

Technical Field

[0001] The invention belongs to the field of protection, in particular to a high-altitude operation protection device for airport express rails. Background Art

[0002] The main function of the steel box girder is to bear and transfer the load of the bridge, connect and support the piers or abutments to achieve the crossing of roads, railways or other modes of transportation. The airport express needs to hoist and install the steel box girder during the construction process. Since the steel box girder belongs to high-altitude operation during the installation process, protective devices are required to protect the safety of the operators.

[0003] A patent application with publication number CN117142288A discloses a protective device for high-altitude operations in wind power generation, including a tower and a workbench, and also includes: a guide rail installed on the tower; a guide groove installed on the workbench, the guide rail and the inner wall of the guide groove are slidably installed; a roller installed on the workbench; an operator stands on the workbench and lifts the workbench through a sling device to facilitate the operator to work at high altitude.

[0004] In order to reduce the large shaking caused by wind, gaps are set on the operating platform to facilitate exhaust and reduce the impact of wind on the operating platform. During the installation process, the steel box girder needs to be transported to high altitude for welding through protective devices. Since sparks and spatters are generated during the welding process, when the above-mentioned device is working, sparks and spatters are easy to fall on the workers through the gaps in the operating platform, posing a safety hazard.

[0005] To this end, the present invention provides a high-altitude operation protection device for airport express rails. Summary of the invention

[0006] In order to make up for the deficiencies of the prior art, at least one technical problem raised in the background technology is solved.

[0007] The technical solution adopted by the present invention to solve its technical problem is: the high-altitude work protection device for airport express rail described in the present invention includes a fence for carrying workers, the fence adopts a ventilated structure, four baffles slidably installed inside the fence, the baffles are used to block the gaps in the fence to prevent sparks generated during welding from falling on the workers through the gaps in the fence, and the four baffles are respectively located on the four sides of the fence.

[0008] Preferably, it also includes: a panel mounted on the fence for sliding up and down movement, the gap between the panel and the gap between the fence being consistent; and four screw rods rotatably mounted on the fence, the screw rods being threadedly connected to the panel.

[0009] Preferably, it also includes: four circular plates rotatably mounted on the fence; a connecting block slidably mounted on the circular plate, a No. 1 spring installed between the connecting block and the circular plate; a pull rope with one end wound around the connecting block; and a safety rope fixedly mounted on the other end of the four pull ropes, wherein the safety rope is fixed on the waist and abdomen of the staff.

[0010] Preferably, it also includes: a No. 1 gear fixedly installed at the lower end of the screw rod; a No. 1 chain belt installed between the circular plate and the No. 1 gear, and the circular plate is provided with teeth used in conjunction with the chain belt; and a No. 2 gear slidably and rotatably installed on the fence.

[0011] Preferably, it also includes: a connecting plate rotatably installed at the lower end of the fence; two magnetic plates slidably and rotatably installed on the connecting plate, the magnetic plates being used to absorb welding slag; a telescopic rod No. 1 for controlling the two magnetic plates to approach and move away from each other, the two ends of the telescopic rod No. 1 being respectively installed on the two magnetic plates; and an airbag fixedly installed on the magnetic plate, the airbag being located between the two magnetic plates.

[0012] Preferably, the outer layer of the airbag is wrapped with a blocking cloth, and a No. 1 cavity is provided on the connecting plate. The No. 1 cavity is used to store clean water, and one end of the blocking cloth is immersed in the clean water.

[0013] Preferably, it also includes: a protrusion fixedly installed at the lower end of the baffle; a No. 2 spring installed between the protrusion and the fence; a trapezoidal block for driving the protrusion to slide, the protrusion is located within the rotation range of the trapezoidal block, and the trapezoidal block is slidably installed on the connecting plate; and a No. 3 spring installed between the connecting plates.

[0014] Preferably, it also includes: a push block slidably mounted on the connecting plate, the push block is used to push the trapezoidal block to slide; a second telescopic rod mounted on the connecting plate; a connecting rod with one end rotatably connected to the second telescopic rod and the other end rotatably connected to the push block.

[0015] Preferably, it also includes: a sliding rod slidably mounted on the magnetic plate, the end of the sliding rod close to the airbag is made of a bendable and restorable material; a No. 1 round rod rotatably mounted on the magnetic plate; a plastic sheet for covering the connecting plate, one end of the plastic sheet is wound on the round rod, and the other end of the plastic sheet is fixed on the sliding rod.

[0016] Preferably, it also includes: a disc fixedly mounted on both sides of the magnetic attraction plate; a plurality of knocking structures mounted on the discs, the knocking structure including a cylinder rotatably mounted on the disc and a No. 2 round rod slidably mounted on the magnetic attraction plate, a slide groove is provided on the cylinder, the No. 2 round rod is slidably connected to the slide groove, the rotation of the cylinder can drive the No. 2 round rod to reciprocate towards and away from the magnetic attraction plate, and a No. 4 spring is installed between the No. 2 round rod and the cylinder; a ratchet rotatably mounted on the magnetic attraction plate, and a spring is installed between the ratchet and the disc. A torsion spring is installed; a No. 3 gear installed on the disc is rotatably connected to the cylinder, and the No. 3 gear is fixedly connected to the ratchet; a rack plate slidably installed on the slide rod, and the rack plate is used to drive the ratchet to rotate; a back plate slidably installed on the magnetic plate, and the back plate is used to limit the one-way rotation of the ratchet, and the back plate is located within the moving range of the rack plate; a No. 5 spring is installed between the back plate and the magnetic plate; a No. 2 cavity is opened on the connecting plate, and the No. 2 cavity is used to store welding slag.

[0017] The beneficial effects of the present invention are as follows:

[0018] 1. The high-altitude operation protective device for airport express rail described in the present invention blocks the gap on the side of the fence close to the welding point by setting a baffle, thereby improving the problem of sparks and spatters falling on the workers through the gap in the fence, playing a protective role, and reducing the safety risks of operators during operation. It is more adaptable to operators of different heights by cooperating with the enclosure, and at the same time, when strong winds blow, the fence can be controlled downward to reduce the contact area of ​​the protective device on the windward side, thereby reducing the impact of wind on the operating platform.

[0019] 2. The high-altitude work protection device for airport express rail described in the present invention is provided with a magnetic suction plate. When working, the magnetic suction plate is placed below the welding point. The magnetic suction plate can absorb welding slag and the like generated during welding on its upper surface to improve the problem of welding slag and the like falling during welding, which threatens the normal driving of the track and the vehicle. In conjunction with the block and the trapezoidal block, when the connecting plate needs to be rotated to the working side, the baffle on this side can be pushed to move to block the fence gap on this side. It is easy to use. In conjunction with the plastic sheet, it can be covered on top of the magnetic suction plate when strong winds occur to improve the problem of welding slag and the like on the magnetic suction plate being blown away by strong winds.

[0020] 3. The high-altitude work protective device for airport express rail described in the present invention is provided with a knocking component. When the slide bar slides to the position closest to the connecting plate, the knocking component can automatically knock the magnetic plate to shake the welding slag on the magnetic plate into the No. 1 cavity for storage. There is no need to place the protective device on the ground for cleaning and then re-hoist it, which is convenient to use. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] The present invention will be further described below in conjunction with the accompanying drawings.

[0022] Figure 1 is a three-dimensional diagram of the first embodiment of the present invention;

[0023] Figure 2 It is a schematic diagram of the structure of the baffle and the enclosure of the present invention;

[0024] Figure 3 It is a schematic diagram of the structure of the draw rope of the present invention;

[0025] Figure 4 is a bottom view of the fence of the present invention;

[0026] Figure 5 It is a structural schematic diagram of the connecting plate and the magnetic attraction plate of the present invention;

[0027] Figure 6 It is a diagram of the matching relationship between the trapezoidal block and the protrusion of the present invention;

[0028] Figure 7 It is a cross-sectional view of the magnetic attraction plate and the connecting plate of the present invention;

[0029] Figure 8 It is a structural schematic diagram of the knocking structure of the present invention;

[0030] Fig. 9 It is a schematic diagram of the structure of the airbag and the baffle cloth of the present invention;

[0031] In the figure: 1, fence; 2, baffle; 3, enclosure; 4, screw rod; 5, round plate; 6, connecting block; 7, spring No. 1; 8, pull rope; 9, safety rope; 10, gear No. 1; 11, chain belt No. 1; 12, gear No. 2; 13, connecting plate; 14, magnetic plate; 15, telescopic rod No. 1; 16, airbag; 17, baffle; 18, cavity No. 1; 19, bump; 20, spring No. 2; 21, Trapezoidal block; 22. Spring No. 3; 23. Push block; 24. Telescopic rod No. 2; 25. Sliding rod; 26. Round rod No. 1; 27. Plastic sheet; 28. Disc; 29. ​​Striking structure; 291. Cylinder; 292. Round rod No. 2; 293. Spring No. 4; 30. Ratchet; 31. Gear No. 3; 32. Rack plate; 33. Butt plate; 34. Spring No. 5; 35. Cavity No. 2; 36. Connecting rod. DETAILED DESCRIPTION

[0032] In order to make the technical means, creative features, objectives and effects achieved by the present invention easy to understand, the present invention is further explained below in conjunction with specific implementation methods.

[0033] like Figure 1-Figure 9As shown, a high-altitude work protection device for an airport express rail according to an embodiment of the present invention comprises a fence 1 for carrying workers, wherein the fence 1 adopts a ventilated structure and is characterized in that four baffles 2 are slidably mounted inside the fence 1, wherein the baffles 2 are used to block the gaps in the fence 1 to prevent sparks generated during welding from falling on workers through the gaps in the fence 1, and the four baffles 2 are respectively located on the four sides of the fence 1.

[0034] Specifically, the existing protective device is in the style of a fence 1. When working, the operator is located in the fence 1 and lifts the fence 1 through a sling device, so that the operator can weld the steel box girder at high altitude. During the welding process, sparks and spatters will fall on the workers through the gaps in the fence 1, posing a safety hazard. In the initial position, the baffle 2 does not block the gap in the fence 1. Before use, the operator enters the fence 1, and then lifts the fence 1 and the operator to the position where the steel box girder needs to be welded through the sling device. Before welding, slide the baffle 2 close to the welding position to block the gap in the fence 1, so that the fence can improve the problem of sparks and spatters falling on the workers through the gaps in the fence 1 while ensuring exhaust, thereby playing a protective role and reducing the safety risks of the operators during operation.

[0035] like Figure 1 and Figure 2 As shown, it also includes: a panel 3 slidably installed on the fence 1 up and down, the gap of the panel 3 is consistent with the gap of the fence 1; four screw rods 4 rotatably installed on the fence 1, and the screw rods 4 are threadedly connected to the panel 3.

[0036] Specifically, since different operators have different heights, when the fence 1 is high, it will hinder the operator's welding action. When the fence 1 is low, the operator is at risk of falling from the fence 1. The baffle 2 is telescopic to adapt to the enclosure 3 of different heights. By controlling the rotation of the screw rod 4, the enclosure 3 is driven up and down to adapt to operators of different heights. It has stronger adaptability. At the same time, when there is a strong wind, the fence 1 can be controlled downward to reduce the contact area of ​​the protective device on the windward side and reduce the impact of wind on the operating platform.

[0037] like Figure 2 and Figure 3 As shown, it also includes: four circular plates 5 rotatably mounted on the fence 1; a connecting block 6 slidably mounted on the circular plate 5, and a spring 7 is installed between the connecting block 6 and the circular plate 5; a pull rope 8 with one end wound around the connecting block 6; and a safety rope 9 fixedly mounted on the other end of the four pull ropes 8, and the safety rope 9 is fixed on the waist and abdomen of the staff.

[0038] Specifically, the safety rope 9 adopts an existing adjustable rock climbing safety rope with a buckle and other structures. Before work, the circular plate 5 is controlled to rotate to drive the connecting block 6 to rotate synchronously. During the rotation, the pull rope 8 is stretched. The length of the pull rope 8 is adjusted according to different body heights so that the length of the pull rope 8 is enough for the operator to buckle the safety rope 9 around the waist. If the operator needs to walk in the fence 1 in the air, the connecting block 6 slides relative to the circular plate 5 so that the operator has a certain range of activity space. Therefore, the operator can be restricted from performing behaviors that pose safety hazards near the fence 1, further ensuring the safety of the operator.

[0039] like Figure 3 As shown, it also includes: a No. 1 gear 10 fixedly installed at the lower end of the screw rod 4; a No. 1 chain belt 11 installed between the circular plate 5 and the No. 1 gear 10, and the circular plate 5 is equipped with teeth used in conjunction with the chain belt; a No. 2 gear 12 slidably and rotatably installed on the fence 1.

[0040] Specifically, in the initial state, the No. 1 gear 10 is located above the No. 2 gear 12; before work, the operator can lift the safety rope 9 upwards until the rope is located at the waist and abdomen position, the lifting of the safety rope 9 causes the pull rope 8 to extend, the extension of the pull rope 8 causes the connecting block 6 and the circular plate 5 to rotate, the circular plate 5 drives the No. 1 gear 10 to rotate through the No. 1 chain belt 11, the rotation of the No. 1 gear 10 causes the screw rod 4 to rotate, the rotation of the screw rod 4 causes the enclosure 3 to move upward, after the safety rope 9 is fixed, the No. 2 gear 12 is controlled to move downward, so that the No. 2 gear 12 is meshed with the circular plate 5, at this time the circular plate 5 cannot rotate, the length of the pull rope 8 and the enclosure The height of 3 is fixed. When there is a strong wind, the second gear 12 is controlled to rotate, which drives the circular plate 5 to rotate, so that the connecting block 6 rotates. The connecting block 6 rotates, so that the length of the pull rope 8 is reduced, so that the operator squats. When the circular plate 5 rotates, the first gear 10 and the screw rod 4 are driven to rotate through the first chain belt 11, so that the enclosure 3 moves down, reducing the contact area between the windward surface and the wind; by setting the first chain belt 11, the height of the enclosure 3 can be automatically adjusted by the pull rope 8, which is easy to use. At the same time, when it is windy, the operator can be limited while squatting, further ensuring the safety of the operator.

[0041] like Figure 4 , Figure 5 and Fig. 9 As shown, it also includes: a connecting plate 13 rotatably installed at the lower end of the fence 1; two magnetic plates 14 slidably and rotatably installed on the connecting plate 13, and the magnetic plates 14 are used to absorb welding slag; a telescopic rod 15 for controlling the two magnetic plates 14 to approach and move away from each other, and the two ends of the telescopic rod 15 are respectively installed on the two magnetic plates 14; an air bag 16 fixedly installed on the magnetic plate 14, and the air bag 16 is located between the two magnetic plates 14.

[0042] Specifically, since the steel box girder installation process is welded by one of the welding methods such as submerged arc automatic welding, CO2 gas shielded welding and manual arc welding, welding slag will be generated in the welding process. For some steel box girders with a high iron content, the welding slag is magnetically conductive and will be adsorbed on the track due to the magnetic force generated by the track during operation, thus posing a greater risk to vehicle driving; in the initial state, the No. 1 telescopic rod 15 is in an extended state, the two airbags 16 are not in contact, and the magnetic suction plate 14 is located below the fence 1 and is in a horizontal state. When the fence 1 is lifted to the welding point, the control plate 13 is rotated to the fence 1 toward the welding point. On the one hand, if there is no steel pipe at the welding point, the connecting plate 13 is controlled to rotate and the No. 1 telescopic rod 15 is controlled to contract, so that the two airbags 16 are close to each other until the connecting plate 13 rotates to the bottom of the welding point. If there is a steel pipe at the welding point, the connecting plate 13 is controlled to rotate first, and the steel pipe is stuck between the two airbags 16 during the rotation. Then the No. 1 telescopic rod 15 is controlled to contract, so that the two airbags 16 are close to each other until the airbags 16 clamp the steel pipe. During operation, the magnetic plate 14 can absorb welding slag and the like generated during welding on its upper surface to improve the problem of welding slag and the like falling during welding, which poses a threat to the normal driving of the track and the vehicle.

[0043] like Figure 5 and Fig. 9 As shown, the outer layer of the airbag 16 is wrapped with a blocking cloth 17, and a first cavity 18 is provided on the connecting plate 13. The first cavity 18 is used to store clean water, and one end of the blocking cloth 17 is immersed in the clean water.

[0044] Specifically, the blocking cloth 17 is made of cotton or other fabric that can be completely soaked and water molecules can move inside it. Before use, the blocking cloth 17 is soaked, and one end of the blocking cloth 17 is always immersed in the No. 1 cavity 18 to ensure that the blocking cloth 17 is always in a wet state to avoid the problem of high temperature of welding slag etc. damaging the airbag 16.

[0045] like Figure 5 and Figure 6 As shown, it also includes: a protrusion 19 fixedly installed at the lower end of the baffle 2; a No. 2 spring 20 installed between the protrusion 19 and the fence 1; a trapezoidal block 21 for driving the protrusion 19 to slide, the protrusion 19 is located within the rotation range of the trapezoidal block 21, and the trapezoidal block 21 is slidably installed on the connecting plate 13; a No. 3 spring 22 installed between the connecting plates 13 and the connecting plates 13.

[0046] Specifically, Figure 6As an example, the connecting plate 13 rotates counterclockwise, and the connecting plate 13 rotates clockwise to drive the trapezoidal block 21 to rotate synchronously. The trapezoidal block 21 can push the protrusion 19 to move, and the movement of the protrusion 19 pushes the baffle 2 to move until the baffle 2 blocks the gap between the fences 1. At this time, the second spring 20 is deformed, and the connecting plate 13 is consistent with the central axis of one side of the baffle 2. When the connecting plate 13 is to be rotated to another side, the connecting plate 13 continues to rotate clockwise with the trapezoidal block 21. Since the baffle 2 can no longer move, the trapezoidal block 21 is rotated clockwise. The inclined surface of the trapezoidal block 21 contacts the protrusion 19, so the trapezoidal block 21 moves away from the protrusion 19, causing the No. 3 spring 22 to be compressed. After the trapezoidal block 21 passes through the protrusion 19, the protrusion 19 and the baffle 2 are restored to their original positions under the elastic force of the No. 2 spring 20, and the trapezoidal block 21 is restored to its original position under the elastic force of the No. 3 spring 22. By setting the trapezoidal block 21, when the connecting plate 13 needs to be rotated to the working side, the baffle 2 on that side can be pushed to move, which is convenient to use.

[0047] like Figure 4 , Figure 5 and Figure 6 As shown, it also includes: a push block 23 slidably mounted on the connecting plate 13, and the push block 23 is used to push the trapezoidal block 21 to slide; a second telescopic rod 24 mounted on the connecting plate 13; and a connecting rod 36 having one end rotatably connected to the second telescopic rod 24 and the other end rotatably connected to the push block 23.

[0048] Specifically, when strong winds occur and the windward side is the working side, the magnetic plate 14 is controlled to rotate to the bottom of the connecting plate 13 and be in a horizontal state. During the rotation, the magnetic plate 14 contacts the No. 2 telescopic rod 24 and pushes the No. 2 telescopic rod 24 to contract. The contraction of the No. 2 telescopic rod 24 pushes the push block 23 to move away from the protrusion 19 through the connecting rod 36. The movement of the push block 23 drives the trapezoidal block 21 to move synchronously until the trapezoidal block 21 is no longer in contact with the protrusion 19. At this time, the protrusion 19 and the baffle 2 can return to their original positions under the action of the elastic force of the No. 2 spring 20, so that the gap in the fence 1 is exposed to reduce the area of ​​contact between the windward side and the wind.

[0049] like Figure 7 As shown, it also includes: a slide bar 25 slidably mounted on the magnetic plate 14, and the end of the slide bar 25 close to the airbag 16 is made of a bendable and restorable material; a round rod 26 rotatably mounted on the magnetic plate 14; and a plastic sheet 27 for covering the connecting plate 13, one end of the plastic sheet 27 is wound on the round rod, and the other end of the plastic sheet 27 is fixed on the slide bar 25.

[0050] Specifically, when strong winds occur, the control slide bar 25 slides toward the direction close to the connecting plate 13, so that the No. 1 round rod 26 rotates, the plastic sheet 27 stretches, and the plastic surface covers the top of the magnetic suction plate 14 to improve the problem of strong winds blowing away the welding slag on the magnetic suction plate 14.

[0051] like Figure 5 and Figure 8 As shown, it also includes: a disk 28 fixedly mounted on both sides of the magnetic attraction plate 14; a plurality of knocking structures 29 mounted on the disk 28, the knocking structure 29 including a cylinder 291 rotatably mounted on the disk 28 and a No. 2 round rod 292 slidably mounted on the magnetic attraction plate 14, the cylinder 291 is provided with a slide groove, the No. 2 round rod 292 is slidably connected to the slide groove, the rotation of the cylinder 291 can drive the No. 2 round rod 292 to reciprocate towards and away from the magnetic attraction plate 14, and a No. 4 spring 293 is installed between the No. 2 round rod 292 and the cylinder 291; a ratchet 30 rotatably mounted on the magnetic attraction plate 14, the ratchet 30 and the disk 5 A torsion spring is installed between the two components; a No. 3 gear 31 rotatably installed on the disc 28, the No. 3 gear 31 is meshed with the cylinder 291, and the No. 3 gear 31 is fixedly connected to the ratchet 30; a rack plate 32 slidably installed on the slide rod 25, the rack plate 32 is used to drive the ratchet 30 to rotate; a butt plate 33 slidably installed on the magnetic plate 14, the butt plate 33 is used to limit the unidirectional rotation of the ratchet 30, and the butt plate 33 is located within the moving range of the rack plate 32; a No. 5 spring 34 is installed between the butt plate 33 and the magnetic plate 14; a No. 2 cavity 35 is opened on the connecting plate 13, and the No. 2 cavity 35 is used to store welding slag.

[0052] Specifically, the magnetic attraction plate 14 adopts an electrically controlled magnetic attraction structure, and the stop block adopts a telescopic structure. When the stop block is engaged with the ratchet 30, the ratchet 30 is restricted to rotate counterclockwise only. The teeth of the rack plate 32 are triangular. In the initial state, the torsion spring between the ratchet 30 and the circular plate 5 is in a torsion state. When more welding slag is adsorbed on the magnetic attraction plate 14, the control slide bar 25 slides toward the direction close to the connecting plate 13. During the sliding process, the rack plate 32 contacts the ratchet 30. At this time, the inclined surface of the teeth of the rack plate 32 is in contact with the ratchet 30. The inclined surfaces of the teeth are in contact, and the rack plate 32 slides upward relative to the slide bar 25 to pass the ratchet 30. After passing the ratchet 30, it returns to its original position under the action of gravity, and the slide bar 25 continues to move downward. The slide bar 25 contacts the stop block and pushes the stop block to slide downward until the stop block is no longer in contact with the ratchet 30. At this time, the plastic sheet 27 blocks the top of the magnetic suction plate 14, controlling the magnetic suction plate 14 to not generate magnetic force. The ratchet 30 rotates clockwise under the action of the torsion spring elastic force, and the rotation of the ratchet 30 drives the third gear 31 to rotate synchronously, and the third gear 31 rotates The rotation drives the cylinder 291 on the disc 28 to rotate. The rotation of the cylinder 291 makes the second round rod 292 slide back and forth relative to the magnetic plate 14, that is, reciprocating contact and distance, so as to realize the knocking action, that is, the welding slag on the magnetic plate 14 can be shaken off into the second cavity 35 (a suction pump or other structure can be set in the direction away from the opening of the second cavity 35 to pump the welding slag into the inside of the second cavity 35). After the knocking is completed, the magnetic plate 14 is controlled to generate magnetic force again, and the sliding rod 25 is controlled to drive the rack plate 32 to slide upward. When the rack plate 32 slides, the stop block returns to its original position under the action of the elastic force of the No. 5 spring 34 and meshes with the ratchet 30 again. The rack plate 32 continues to move and contact with the ratchet 30, pushing the ratchet 30 to rotate counterclockwise. At this time, the torsion spring is twisted; by setting up a ejection structure, the magnetic suction plate 14 can be automatically knocked after the slide rod 25 moves to the bottom end, so that the welding slag on the magnetic suction plate 14 can be shaken off and stored in the No. 1 cavity 18. There is no need to place the protective device on the ground, clean it, and then re-hoist it, which is convenient to use.

[0053] Working principle: before work, the operator can lift the safety rope 9 upwards until the rope is located at the waist and abdomen position. The lifting of the safety rope 9 makes the pull rope 8 stretch, and the stretching of the pull rope 8 makes the connecting block 6 and the circular plate 5 rotate. The circular plate 5 drives the No. 1 gear 10 to rotate through the No. 1 chain belt 11. The rotation of the No. 1 gear 10 makes the screw rod 4 rotate, and the rotation of the screw rod 4 makes the enclosure 3 move upward. After the safety rope 9 is fixed, the No. 2 gear 12 is controlled to move downward so that the No. 2 gear 12 is engaged with the circular plate 5. At this time, the circular plate 5 cannot rotate, and the length of the pull rope 8 and the height of the enclosure 3 are fixed. During work, the operator is located in the fence 1 and lifts the fence 1 through the sling device, so that the operator can weld the steel box girder in the air. Before welding, the connecting plate 13 is controlled to rotate counterclockwise to one side of the welding point to Figure 6As an example, the connecting plate 13 rotates clockwise to drive the trapezoidal block 21 to rotate synchronously. The trapezoidal block 21 can push the protrusion 19 to move, and the movement of the protrusion 19 pushes the baffle 2 to move until the baffle 2 blocks the gap between the fences 1. At this time, the second spring 20 is deformed, and the connecting plate 13 is consistent with the central axis of one side of the baffle 2. When the connecting plate 13 is to be rotated to another side, the connecting plate 13 continues to rotate clockwise with the trapezoidal block 21. Since the baffle 2 can no longer move, the inclined surface of the trapezoidal block 21 contacts the protrusion 19, so the trapezoidal block 21 moves away from the protrusion 19, so that the third spring 22 The trapezoidal block 21 is compressed. After the trapezoidal block 21 passes through the protrusion 19, the protrusion 19 and the baffle 2 are restored to their original positions under the elastic force of the second spring 20. The trapezoidal block 21 is restored to its original position under the elastic force of the third spring 22. After a large amount of welding slag is adsorbed on the magnetic suction plate 14, the slide bar 25 is controlled to slide in the direction close to the connecting plate 13. During the sliding process, the rack plate 32 contacts the ratchet 30. At this time, the inclined surface of the teeth of the rack plate 32 contacts the inclined surface of the teeth of the ratchet 30. The rack plate 32 slides upward relative to the slide bar 25 to pass through the ratchet 30. After passing through the ratchet 30, it is under the action of gravity. The slider 25 is restored to its original position, and the slider 25 continues to move downward, the slider 25 contacts the stop block and pushes the stop block to slide downward until the stop block is no longer in contact with the ratchet 30. At this time, the plastic sheet 27 blocks the top of the magnetic plate 14, and the magnetic plate 14 is controlled not to generate magnetic force. The ratchet 30 rotates clockwise under the elastic force of the torsion spring, and the rotation of the ratchet 30 drives the third gear 31 to rotate synchronously. The rotation of the third gear 31 drives the cylinder 291 on the disc 28 to rotate. The rotation of the cylinder 291 causes the second round rod 292 to slide back and forth relative to the magnetic plate 14, that is, to contact and move away from each other back and forth, so as to realize the knocking action, and the The welding slag and the like on the magnetic plate 14 are shaken off into the No. 2 cavity 35 (a suction pump and other structures can be set in the direction of the No. 2 cavity 35 away from the opening to draw the welding slag and the like into the No. 2 cavity 35). After the knocking is completed, the magnetic plate 14 is controlled to generate magnetic force again, and the sliding rod 25 is controlled to drive the rack plate 32 to slide upward. When the rack plate 32 slides, the stop block returns to its original position under the action of the elastic force of the No. 5 spring 34, and engages with the ratchet 30 again. The rack plate 32 continues to move and contact with the ratchet 30, pushing the ratchet 30 to rotate counterclockwise. At this time, the torsion spring is twisted to realize the energy storage of the ratchet 30.

[0054] The above shows and describes the basic principles, main features and advantages of the present invention. It should be understood by those skilled in the art that the present invention is not limited to the above embodiments. The above embodiments and descriptions are only for explaining the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, which fall within the scope of the present invention. The scope of protection of the present invention is defined by the attached claims and their equivalents.

Claims

1. A high-altitude work protection device for an airport express rail, comprising a fence (1) for carrying workers, wherein the fence (1) adopts a ventilated structure, characterized in that: Also includes: Four baffles (2) are slidably mounted inside the fence (1), and the baffles (2) are used to block the gaps in the fence (1) to prevent sparks generated during welding from falling onto workers through the gaps in the fence (1). The four baffles (2) are respectively located on the four sides of the fence (1).

2. The high-altitude operation protection device for airport express rail according to claim 1 is characterized by: Also includes: A panel (3) is slidably mounted on the fence (1) up and down, and the gap between the panel (3) and the gap between the fence (1) are consistent; Four screw rods (4) are rotatably mounted on the fence (1), and the screw rods (4) are threadedly connected to the enclosure plate (3).

3. The high-altitude operation protection device for airport express rail according to claim 2 is characterized by: Also includes: Four circular plates (5) rotatably mounted on the fence (1); A connecting block (6) slidably mounted on the circular plate (5), wherein a first spring (7) is mounted between the connecting block (6) and the circular plate (5); a draw cord (8) with one end wound around the connecting block (6); A safety rope (9) is fixedly mounted on the other end of the four pull ropes (8), and the safety rope (9) is fixed on the waist and abdomen of the worker.

4. The high-altitude operation protection device for airport express rail according to claim 3 is characterized by: Also includes: A first gear (10) fixedly mounted on the lower end of the screw rod (4); A first chain belt (11) installed between the circular plate (5) and the first gear (10), wherein teeth for use with the chain belt are installed on the circular plate (5); Slide and rotate the second gear (12) mounted on the fence (1).

5. The high-altitude operation protection device for airport express rail according to claim 4 is characterized by: Also includes: A connecting plate (13) rotatably mounted on the lower end of the fence (1); Two magnetic attraction plates (14) slidably and rotatably mounted on the connecting plate (13), the magnetic attraction plates (14) being used to absorb welding slag; A first telescopic rod (15) for controlling the two magnetic attraction plates (14) to move closer to or further away from each other, wherein two ends of the first telescopic rod (15) are respectively mounted on the two magnetic attraction plates (14); An air bag (16) is fixedly mounted on the magnetic attraction plate (14), and the air bag (16) is located between the two magnetic attraction plates (14).

6. The high-altitude operation protection device for airport express rail according to claim 5, characterized in that: The outer layer of the airbag (16) is wrapped with a blocking cloth (17), and a first cavity (18) is provided on the connecting plate (13). The first cavity (18) is used to store clean water, and one end of the blocking cloth (17) is immersed in the clean water.

7. The high-altitude operation protection device for airport express rail according to claim 6, characterized in that: Also includes: A protrusion (19) fixedly mounted on the lower end of the baffle (2); A second spring (20) installed between the protrusion (19) and the fence (1); a trapezoidal block (21) for driving the protrusion (19) to slide, the protrusion (19) being located within the rotation range of the trapezoidal block (21), and the trapezoidal block (21) being slidably mounted on the connecting plate (13); A third spring (22) is installed between the connecting plates (13) and the connecting plates (13).

8. The high-altitude operation protection device for airport express rail according to claim 7, characterized in that: Also includes: a push block (23) slidably mounted on the connecting plate (13), the push block (23) being used to push the trapezoidal block (21) to slide; A second telescopic rod (24) mounted on the connecting plate (13); One end is rotatably connected to the second telescopic rod (24), and the other end is rotatably connected to the connecting rod (36) on the push block (23).

9. The high-altitude operation protection device for airport express rail according to claim 8, characterized in that: Also includes: A slide bar (25) slidably mounted on the magnetic attraction plate (14), wherein one end of the slide bar (25) close to the air bag (16) is made of a material that can be bent and restored; Rotating a round rod (26) mounted on the magnetic attraction plate (14); A plastic sheet (27) for covering the connecting plate (13), one end of the plastic sheet (27) being wound on a round rod, and the other end of the plastic sheet (27) being fixed on the sliding rod (25).

10. The high-altitude operation protection device for airport express rail according to claim 9, characterized in that: Also includes: Discs (28) fixedly mounted on both sides of the magnetic attraction plate (14); A plurality of knocking structures (29) are mounted on the disc (28), wherein the knocking structures (29) include a cylinder (291) rotatably mounted on the disc (28) and a second round rod (292) slidably mounted on the magnetic attraction plate (14), wherein a slide groove is provided on the cylinder (291), and the second round rod (292) is slidably connected to the slide groove, and the rotation of the cylinder (291) can drive the second round rod (292) to reciprocate toward and away from the magnetic attraction plate (14), and a fourth spring (293) is installed between the second round rod (292) and the cylinder (291); A ratchet (30) is rotatably mounted on the magnetic attraction plate (14), wherein a torsion spring is mounted between the ratchet (30) and the circular plate (5); Rotating a third gear (31) mounted on the disc (28), wherein the third gear (31) is meshedly connected with the cylinder (291), and the third gear (31) is fixedly connected with the ratchet (30); a rack plate (32) slidably mounted on the slide rod (25), the rack plate (32) being used to drive the ratchet wheel (30) to rotate; a stop plate (33) slidably mounted on the magnetic attraction plate (14), the stop plate (33) being used to limit the one-way rotation of the ratchet wheel (30), and the stop plate (33) being located within the moving range of the rack plate (32); A No. 5 spring (34) installed between the abutment plate (33) and the magnetic attraction plate (14); A second cavity (35) is provided on the connecting plate (13), and the second cavity (35) is used for storing welding slag.

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