High-altitude lifting platform with electromagnetic protection

Abstract

The application discloses a high-altitude lifting platform with electromagnetic protection, which comprises a movable platform, an electromagnetic protection structure is arranged in the movable platform, a scissor lifting frame capable of controlling the up-and-down movement of the movable platform is arranged at the bottom end of the movable platform, a bottom plate is arranged at the bottom end of the scissor lifting frame, four guardrail assemblies are arranged at the top end of the movable platform, and a rotating shaft is arranged on the inner side of a bent rod of each guardrail assembly. When a person leans against the bent rod, the bent rod will be subjected to external force and will have a tendency to rotate to the outside of the movable platform, at this time, the bent rod will press the pressure-sensitive switch, and when the force received by the pressure-sensitive switch reaches the triggering condition, the siren will be controlled to emit an alarm sound to make a prompt, so that the damage of the guardrail assembly caused by human force is avoided, and the danger caused by the leaning of people against the guardrail assembly is avoided from the root, and the protection effect is better.

Description

Technical Field

[0001] This invention relates to the field of lifting platforms, specifically a high-altitude lifting platform with electromagnetic protection. Background Technology

[0002] After a long period of use, roads and bridges need to be inspected and maintained to ensure travel safety. During the maintenance process, the bottom of the bridge is particularly difficult to maintain due to its special location.

[0003] To facilitate bridge maintenance, existing technologies have developed watercraft that can navigate to the bottom of the bridge and then use a lift platform on board to lift personnel to a position close to the bottom of the bridge for inspection and maintenance work. Therefore, the lift platform on board is of great importance.

[0004] In the prior art, scissor lift structures are commonly used for aerial work platforms, such as the base of an aerial work platform disclosed in CN104773674B. In order to improve safety, guardrails are generally installed at the top of the lift platform, such as the scissor lift platform and its adjustment method disclosed in CN115490190B.

[0005] However, existing guardrails are generally fixedly connected to the main body of the platform, and their height usually reaches the chest or abdomen of an adult. While the guardrails protect people, they also create a sense of complacency. Many people like to lean on the guardrails unconsciously, relying on them for support. This can easily lead to the guardrails breaking or falling because the person's center of gravity is too high.

[0006] Current technologies typically address this issue by reinforcing or raising the guardrails, but this approach fails to prevent accidents from occurring at their source. Summary of the Invention

[0007] To address the shortcomings of existing technologies, this invention provides a high-altitude lifting platform with electromagnetic protection, which can effectively improve the safety of the lifting platform.

[0008] To achieve the above objectives, the technical solution adopted by the present invention is as follows: a high-altitude lifting platform with electromagnetic protection, including a movable platform, the movable platform having an electromagnetic protection structure inside, a scissor lift frame capable of controlling the up and down movement of the movable platform installed at the bottom of the movable platform, a base plate installed at the bottom of the scissor lift frame, the movable platform having a rectangular cross-section, and four guardrail components installed at the top of the movable platform, the guardrail components enclosing a semi-enclosed space at the top of the movable platform; The guardrail assembly includes a curved bar, a rotating shaft is provided on the inner side of the curved bar, both ends of the rotating shaft are fixedly connected to the inner side of the curved bar, and a mounting seat is installed on the outer end of the rotating shaft through a bearing, and the mounting seat is fixedly installed on the top of the movable platform; Both ends of the bent rod are provided with U-shaped clamps, which are fixedly installed on the top of the movable platform. An alarm that can emit an alarm sound is installed on the side of the U-shaped clamp facing the movable platform. Pressure sensing switches that can trigger the alarm are installed on the inner walls of the U-shaped clamp both away from and near the movable platform. The two ends of the bent rod are located inside two U-shaped clamps, and both pressure-sensitive switches are in contact with the bent rod extending into the U-shaped clamps.

[0009] Furthermore, a fixed frame is installed on the inner side of the bent rod, and an isolation cloth capable of blocking electromagnetic radiation is provided on the inner wall of the fixed frame. Multiple protective rods are provided on both sides of the isolation cloth, and both ends of the protective rods are fixedly connected to the inner wall of the fixed frame. One of the guardrail components has a support rod installed at the top, and an indicator light and a distance sensor switch that can trigger the indicator light are installed at the top of the support rod to prevent the movable platform from getting too close to the bridge.

[0010] Furthermore, the activity platform includes a platform body, the top of which is provided with an installation groove, the electromagnetic protection structure includes a protective pad of the same material as the isolation cloth, the protective pad is disposed inside the installation groove, the top of the protective pad is provided with a cover plate, the top of the cover plate is flush with the upper surface of the platform body, and the cover plate is surrounded between four guardrail components. The protective pad includes radiation-proof fabric, with a metal fiber cloth fixed to the top of the radiation-proof fabric, and a conductive rubber fixed to the top of the metal fiber cloth, which can block electromagnetic radiation and reduce its impact on personnel on the platform.

[0011] Furthermore, an inspection mechanism is provided at the bottom of the movable platform, the inspection mechanism including an electronic tensile gauge installed at the bottom of the movable platform, the electronic tensile gauge being able to detect the magnitude of the tensile force; The inspection mechanism also includes a support frame and a vertical plate fixedly mounted on the top of the base plate. The support frame has a central shaft inside, and both ends of the central shaft are movably connected to the inner wall of the support frame through rotating shafts. A steel cable is fixed to the outer end of the central shaft. The steel cable is wound around the outer end of the central shaft, and one end of the steel cable is connected to the electronic tension gauge through a hook.

[0012] Furthermore, a motor capable of driving the central shaft to rotate is installed on the upright plate, the output shaft of the motor passes through the upright plate, and a connection hole is provided at one end of the output shaft of the motor; One end of the central shaft extends to one side of the support frame and has a contraction hole. An electromagnet is fixed on the inner wall of the contraction hole, and a spring is fixed on the electromagnet. An iron rod is fixed on one end of the spring. The cross-section of the insertion rod is rectangular. In the connected state, one end of the insertion rod extends into the connection hole on the motor output shaft, so that the motor can drive the central shaft to rotate.

[0013] Furthermore, a boss is fixedly provided on one side of the activity platform, a fence is fixedly provided on the top of the boss, and a climbing mechanism is installed at the bottom of the boss. The climbing mechanism includes two side plates that are hinged to the bottom of the boss. One end of the side panel is equipped with a roller via a pivot, and the top of the side panel is equipped with an escalator railing, one of which has multiple limiting components for protection installed at its top.

[0014] Furthermore, multiple pedal assemblies are provided between the two side plates, and the boss also includes a protective plate. The protective plate is located at the bottom of the two side plates and is connected to the two side plates by bolts. The protective plate can cover the gap between the pedal assemblies to prevent stepping into empty space. The pedal assembly includes a triangular tube, and a first anti-slip pad is fixedly provided at the top of the triangular tube to improve safety when walking on the climbing mechanism. The triangular tube is provided with a load-bearing rod inside, and the two ends of the load-bearing rod extend to both sides of the triangular tube respectively. The two ends of the load-bearing rod are fixedly connected to two side plates respectively. Two fixing blocks are sleeved on the outer end of the load-bearing rod through bearings. The fixing blocks are fixedly installed at the top inside the triangular tube. A weight is fixedly installed at the bottom inside the triangular tube. The cross-section of the triangular tube is an equilateral triangle. In its natural state, the weight of the weight keeps the top of the triangular tube horizontal.

[0015] Furthermore, the bottom end of the load-bearing rod is provided with an arc-shaped push plate, and a second anti-slip pad that contacts the outer end of the load-bearing rod is fixedly provided on the inner wall of the arc-shaped push plate. The second anti-slip pad can prevent slipping. Two electric push rods are fixedly provided at the bottom end of the arc-shaped push plate, and the bottom ends of the electric push rods are fixedly connected to the weight.

[0016] Furthermore, the limiting component includes a slide bar fixedly installed at the top of the escalator railing, and a slide block is sleeved on the outer end of the slide bar. The slide block can be adjusted in height on the slide bar according to the actual situation. Two protrusions are fixedly provided on the outer end of the slide rod, and two grooves that match the protrusions are opened on the inner wall of the slide block, which serve as a limiting function; Furthermore, a fastening bolt is threaded onto the slide block, and a connecting pipe is fixedly provided on the side of the slide block facing the pedal assembly; An air bladder is fixedly installed at one end of the connecting pipe, and an inflation tube with a valve is fixedly installed on the connecting pipe.

[0017] The present invention has the following beneficial effects: 1. By installing guardrail components at the top of the activity platform, people on top of the platform are protected. When someone leans against the curved bar, the curved bar will be subjected to external force and tend to rotate outwards from the activity platform. At this time, the curved bar will press the pressure sensor switch under the action of external force. When the pressure sensor switch reaches the trigger condition, it will control the alarm to sound an alarm, thereby giving a warning and preventing the guardrail components from being broken or damaged by human force. It also prevents people from leaning on the guardrail components and causing danger from the root, thus providing better protection.

[0018] 2. By detachably installing isolation cloth on the guardrail assembly and setting up protective pads of the same material on the movable platform, both have the function of electromagnetic protection. The protective pads and isolation cloths on each guardrail assembly can surround the relevant personnel working on the movable platform, preventing electromagnetic radiation emitted by the ship's equipment from causing harm to the relevant personnel. In addition, since the movable platform is filled with protective pads, the weight of the movable platform itself is reduced, making the lifting and lowering of the movable platform more effortless.

[0019] 3. After the platform rises to the corresponding position, the central shaft is driven by a motor to rotate. The central shaft drives the steel cable and pulls down the electronic tension gauge and the platform, thus simulating the load on the platform. This allows for a check of the platform's load capacity before personnel climb to the top, ensuring safety before allowing them to ascend. This prevents accidents caused by insufficient platform load capacity and ensures the safety of personnel.

[0020] 4. By controlling the arc-shaped push plate to move downwards via the electric push rod, the triangular tube is unrestrained. At this time, under the weight of the weight block, the triangular tube, which was originally tilted with the climbing mechanism, rotates, causing the top of the triangular tube to rotate to a horizontal state. In this way, no matter how the overall tilt angle of the climbing mechanism changes, the top of the triangular tube can be kept horizontal after adjustment, so that people can step on the triangular tube more stably and safely. In addition, the triangular tube and the load-bearing bar are combined into a whole, which strengthens the bending resistance of the entire pedal assembly, making both the triangular tube and the load-bearing bar less likely to be bent.

[0021] 5. By installing multiple restraint components on one of the escalator railings, when people pass through the climbing mechanism, the airbag is located above it. Due to the presence of the airbag, people going up can only lean forward slightly, while people going down can only lean back slightly. This forces people to adjust their center of gravity when passing through the climbing mechanism, bringing their center of gravity closer to the climbing mechanism, thus making it safer to pass through the climbing mechanism. Attached Figure Description

[0022] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0023] Figure 1 This is a perspective view of the invention from the top direction.

[0024] Figure 2 This is a perspective view of the bottom of the present invention.

[0025] Figure 3 This is an exploded view of the present invention.

[0026] Figure 4 This is a perspective view of the scissor lift frame of the present invention.

[0027] Figure 5 This is an exploded view of the movable platform of the present invention.

[0028] Figure 6 This is a cross-sectional view of the protective pad of the present invention.

[0029] Figure 7 This is a perspective view of the guardrail component of the present invention.

[0030] Figure 8 For the present invention Figure 7 Enlarged view of section A.

[0031] Figure 9 This is an exploded view of the guardrail assembly of the present invention.

[0032] Figure 10 For the present invention Figure 9 Enlarged view of section B in the middle.

[0033] Figure 11 This is an exploded view of the climbing mechanism of the present invention.

[0034] Figure 12 This is a perspective sectional view of the pedal assembly of the present invention.

[0035] Figure 13 For the present invention Figure 12 Enlarged view of section C.

[0036] Figure 14 This is a perspective view of the limiting component of the present invention.

[0037] Figure 15 This is a perspective view of the inspection mechanism of the present invention.

[0038] Figure 16This is a cross-sectional view of the support frame of the present invention.

[0039] Figure 17 This is a system diagram of the present invention.

[0040] In the diagram: 1. Movable platform; 101. Platform body; 102. Mounting groove; 103. Protective pad; 104. Cover plate; 2. Guardrail assembly; 201. Bend; 202. Fixing frame; 203. Isolation cloth; 204. Guardrail; 205. U-shaped clamp; 206. Mounting base; 207. Rotating shaft; 208. Alarm; 209. Pressure sensor switch; 3. Scissor lift frame; 4. Base plate; 5. Climbing mechanism; 6. Boss; 7. Inspection mechanism; 701. Support frame; 702. Vertical plate; 703. Motor; 704. Steel cable; 705. Electronic tensile gauge; 706. Middle 707. Spindle; 708. Contraction Hole; 709. Electromagnet; 710. Insert Rod; 8. Limiting Component; 801. Slide Rod; 802. Slide Seat; 803. Connecting Pipe; 804. Airbag; 9. Pedal Assembly; 901. Triangular Cylinder; 902. Weight; 903. Load-bearing Rod; 904. Fixing Block; 905. First Anti-slip Pad; 906. Electric Push Rod; 907. Arc-shaped Push Plate; 908. Second Anti-slip Pad; 10. Escalator Handrail; 11. Side Plate; 12. Roller; 13. Protective Plate; 14. Radiation-proof Fabric; 15. Metal Fiber Cloth; 16. Conductive Rubber. Detailed Implementation

[0041] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0042] like Figure 1-17 As shown, the present invention provides a high-altitude lifting platform with electromagnetic protection, including a movable platform 1. The movable platform 1 has an electromagnetic protection structure inside. A scissor lift frame 3 capable of controlling the up and down movement of the movable platform 1 is installed at the bottom of the movable platform 1. A base plate 4 is installed at the bottom of the scissor lift frame 3. The movable platform 1 has a rectangular cross-section. Four guardrail components 2 are installed at the top of the movable platform 1. The guardrail components 2 enclose the top of the movable platform 1 to form a semi-enclosed space. One of the guardrail components 2 has a support rod installed at its top. The support rod has an indicator light and a distance sensor switch that can trigger the indicator light at its top to prevent the movable platform 1 from getting too close to the bridge. The distance sensor switch can be an LTT-06NO / 12NO type switch, or other types of switches can be selected as needed.

[0043] The base plate 4 is installed on the hull of the waterborne operation vessel. All electrical components of the lifting platform are controlled by the control system on the waterborne operation vessel, such as... Figure 17 As shown below, hereinafter referred to as the control system, the control system is installed on the water work vessel. The scissor lift 3 is located at the output end of the control system. In the initial state, the scissor lift 3 is in a folded state. When the vessel travels to the area under the bridge that needs to be repaired, the scissor lift 3 pushes the movable platform 1 upward until the movable platform 1 moves upward close to the bottom of the bridge. Since the distance sensor switch and the indicator light are located at the input and output ends of the control system, respectively, the distance sensor switch installed on the top of the movable platform 1 will control the indicator light to light up when the distance to the bottom of the bridge is less than 1m, thereby providing a warning and preventing the platform from getting too close to the bridge and causing a collision.

[0044] To prevent people from leaning on guardrail component 2, such as Figure 1 , 7 As shown in Figures 8, 9, and 10, the guardrail assembly 2 includes a curved rod 201. A rotating shaft 207 is provided on the inner side of the curved rod 201. Both ends of the rotating shaft 207 are fixedly connected to the inner side of the curved rod 201. A mounting seat 206 is installed on the outer end of the rotating shaft 207 through a bearing. The mounting seat 206 is fixedly installed on the top of the movable platform 1. Both ends of the bent rod 201 are provided with U-shaped clamps 205. The U-shaped clamps 205 are fixedly installed on the top of the movable platform 1. An alarm 208 capable of emitting an alarm sound is installed on the side of the U-shaped clamps 205 facing the movable platform 1. Pressure sensing switches 209 capable of triggering the alarm 208 are installed on the inner walls of the U-shaped clamps 205 away from and close to the movable platform 1. The pressure sensing switches 209 and the alarm 208 are respectively located at the input and output ends of the control system. The pressure sensing switch 209 can be a BPS31GVM0400B type switch, or other types of switches can be selected as needed. The two ends of the bent rod 201 are located inside the two U-shaped clamps 205 respectively, and the two pressure sensing switches 209 are in contact with the bent rod 201 extending into the U-shaped clamps 205.

[0045] Because the space at the top of the movable platform 1 is surrounded by the guardrail assembly 2, the guardrail assembly 2 serves a protective function. The curved rod 201 is installed at the top of the movable platform 1 via the mounting base 206 and the rotating shaft 207, so the curved rod 201 can rotate. However, both ends of the curved rod 201 are stuck in the U-shaped clamp 205, so the U-shaped clamp 205 restricts the curved rod 201, making it unable to actually rotate despite having the function of rotation. When someone leans against the guardrail assembly 2, the curved rod 201 will be subjected to external force and tend to rotate outwards from the movable platform 1. At this time, the curved rod 201 will be squeezed by the pressure sensor under the action of external force. When the pressure sensor 209 is subjected to a force that reaches the trigger condition, it will control the alarm 208 to sound an alarm through the control system to provide a warning. The trigger condition is that the pressure sensor 209 is subjected to a force greater than 20N. In addition, when an external force pulls the bending rod 201, the bending rod 201 can also trigger another pressure sensor 209 in the U-shaped clamp 205, which can also use the alarm 208 to provide a warning. This avoids deformation or breakage of the guardrail assembly 2 caused by human force, and also prevents people from leaning on the guardrail assembly 2 and causing danger from the root, thus providing a better protection effect.

[0046] To avoid the electromagnetic radiation from electrical equipment affecting personnel working on the platform, such as Figure 1 , 5 As shown in Figures 6, 7, and 9, a fixed frame 202 is installed on the inner side of the bent rod 201. An isolation cloth 203 capable of blocking electromagnetic radiation is provided on the inner wall of the fixed frame 202. Multiple protective rods 204 are provided on both sides of the isolation cloth 203. Both ends of the protective rods 204 are fixedly connected to the inner wall of the fixed frame 202. The activity platform 1 includes a platform body 101, and the top of the platform body 101 is provided with an installation groove 102. The electromagnetic protection structure includes a protective pad 103 made of the same material as the isolation cloth 203. The protective pad 103 is disposed inside the installation groove 102. The top of the protective pad 103 is provided with a cover plate 104. The top of the cover plate 104 is flush with the upper surface of the platform body 101. The cover plate 104 is surrounded between four guardrail components 2. The protective pad 103 includes a radiation-proof fabric 14, with a metal fiber cloth 15 fixedly attached to the top of the radiation-proof fabric 14, and a conductive rubber 16 fixedly attached to the top of the metal fiber cloth 15, which can block electromagnetic radiation and reduce its impact on personnel on the platform.

[0047] An isolation cloth 203 is detachably installed on the guardrail assembly 2, and a protective pad 103 of the same material is set on the movable platform 1. Both the protective pad 103 and the isolation cloth 203 are made of three materials: radiation-proof cloth 14, metal fiber cloth 15, and conductive rubber 16. All three materials have the function of blocking electromagnetic radiation. The protective pad 103 and the isolation cloth 203 on each guardrail assembly 2 can surround the relevant personnel working on the movable platform 1, preventing the electromagnetic radiation emitted by the equipment on the ship from causing harm to the relevant personnel. Furthermore, since the movable platform 1 is filled with protective pad 103, the weight of the movable platform 1 itself is reduced, making the lifting and lowering of the movable platform 1 more effortless.

[0048] Before relevant personnel board the activity platform 1, the load capacity of the activity platform 1 needs to be tested, such as... Figure 2 , 3 As shown in Figures 15 and 16, the bottom of the movable platform 1 is provided with an inspection mechanism 7. The inspection mechanism 7 includes an electronic force gauge 705 installed at the bottom of the movable platform 1. The electronic force gauge 705 is located at the output end of the control system and can detect the magnitude of the tension. The inspection mechanism 7 also includes a support frame 701 and a vertical plate 702 fixedly installed at the top of the base plate 4. The support frame 701 has a central shaft 706 inside. Both ends of the central shaft 706 are movably connected to the inner wall of the support frame 701 through a rotating shaft. A steel cable 704 is fixedly installed at the outer end of the central shaft 706. The steel cable 704 is wound around the outer end of the central shaft 706, and one end of the steel cable 704 is connected to the electronic force gauge 705 through a hook.

[0049] As the platform 1 moves upward, the electronic force gauge 705 installed on the platform 1 moves upward along with the platform 1 and pulls the steel cable 704. The central shaft 706 also rotates as a result. When the platform 1 rises to the designated height, the rotation of the central shaft 706 drives the steel cable 704, causing the steel cable 704 to pull the electronic force gauge 705 downward, thereby pulling the platform 1. This simulates the load on the platform 1. The test stops when the tension value of the electronic force gauge 705 reaches the load requirement. This allows for a check of the load capacity of the platform 1 before personnel climb to the top, ensuring safety before allowing personnel to climb the platform 1. This avoids danger caused by insufficient load capacity of the platform 1 and ensures the safety of personnel. The designated height of the platform 1 depends on the height of the bridge, generally referring to the distance between the top of the platform 1 and the bottom of the bridge being 2.5m to 3m.

[0050] To drive the central shaft 706 to rotate, such as Figure 15 , 16As shown, a motor 703 capable of driving the central shaft 706 to rotate is installed on the upright plate 702. The output shaft of the motor 703 passes through the upright plate 702, and a connection hole is provided at one end of the output shaft of the motor 703. One end of the central shaft 706 extends to one side of the support frame 701 and has a contraction hole 707. An electromagnet 709 is fixed on the inner wall of the contraction hole 707. A spring 708 is fixed on the electromagnet 709. An iron rod 710 is fixed on one end of the spring 708. The electromagnet 709 and the motor 703 are both located at the output end of the control system. The cross-section of the insertion rod 710 is rectangular. In the connected state, one end of the insertion rod 710 extends into the connection hole on the output shaft of the motor 703, so that the motor 703 can drive the central shaft 706 to rotate.

[0051] During the upward movement of the movable platform 1, the electromagnet 709 is energized. The magnetic force of the electromagnet 709 attracts the insertion rod 710, causing it to move and retract into the contraction hole 707. The spring 708 is also compressed as a result. When the central shaft 706 needs to rotate, the electromagnet 709 is de-energized. The elastic force of the spring 708 pushes the insertion rod 710 to move outward. At the same time, the central shaft 706 and the insertion rod 710 are rotated so that the insertion rod 710 is aligned with the connection hole on the output shaft of the motor 703. In this way, after the insertion rod 710 extends, it will be inserted into the connection hole, so that the output shaft of the motor 703 is connected to the central shaft 706. Then, turning on the motor 703 can drive the central shaft 706 to rotate.

[0052] To ensure a smoother ascent for personnel onto platform 1, such as... Figure 1 , 11 As shown in Figures 1, 12, and 13, a protrusion 6 is fixedly provided on one side of the movable platform 1, a fence is fixedly provided on the top of the protrusion 6, and a climbing mechanism 5 is installed at the bottom of the protrusion 6. The climbing mechanism 5 includes two side plates 11 that are hinged to the bottom of the protrusion 6. One end of the side plate 11 is equipped with a roller 12 via a pivot, and the top of the side plate 11 is equipped with an escalator railing 10, with multiple limiting components 8 for protection installed at the top of one of the escalator railings 10.

[0053] Multiple pedal assemblies 9 are provided between the two side plates 11. The boss 6 also includes a protective plate 13. The protective plate 13 is located at the bottom of the two side plates 11 and is connected to the two side plates 11 by bolts. The protective plate 13 can cover the gap between the pedal assemblies 9 to prevent stepping into empty space. Since the side plate 11 on the climbing mechanism 5 is hinged to the boss 6, the roller 12 on the climbing mechanism 5 is always in contact with the ship's deck. As the movable platform 1 moves upward, the boss 6 moves upward synchronously and drives the climbing mechanism 5, causing the tilt angle of the climbing mechanism 5 to change continuously. The angle of the pedal assembly 9 between the two side plates 11 also changes continuously. When the movable platform 1 rises to its position, the climbing mechanism 5 also stabilizes at its current angle.

[0054] After the angle of the climbing mechanism 5 is stabilized, adjust the angle of the pedal assembly 9, such as... Figure 11-13 As shown, the pedal assembly 9 includes a triangular tube 901. A first anti-slip pad 905 is fixedly provided at the top of the triangular tube 901 to improve the safety when walking on the climbing mechanism 5. A load-bearing rod 903 is provided inside the triangular tube 901. The two ends of the load-bearing rod 903 extend to both sides of the triangular tube 901, and the two ends of the load-bearing rod 903 are fixedly connected to two side plates 11 respectively. The outer end of the load-bearing rod 903 is fitted with two fixing blocks 904 through bearings. The fixing blocks 904 are fixedly installed at the top inside the triangular tube 901. The bottom inside the triangular tube 901 is fixedly fitted with a weight 902. The cross-section of the triangular tube 901 is an equilateral triangle. In its natural state, the weight of the weight 902 keeps the top of the triangular tube 901 horizontal.

[0055] The bottom end of the load-bearing rod 903 is provided with an arc-shaped push plate 907. A second anti-slip pad 908 is fixedly provided on the inner wall of the arc-shaped push plate 907 and contacts the outer end of the load-bearing rod 903. The second anti-slip pad 908 can prevent slippage. Two electric push rods 906 are fixedly provided at the bottom end of the arc-shaped push plate 907. The bottom end of the electric push rod 906 is fixedly connected to the weight 902. The electric push rod 906 is located at the output end of the control system.

[0056] At this point, the electric push rod 906 controls the arc-shaped push plate 907 to move downwards, causing the triangular cylinder 901 to lose its restraint. Under the weight of the counterweight 902, the triangular cylinder 901, which was initially tilted with the climbing mechanism 5, rotates, causing its top to rotate to a horizontal position. Subsequently, the electric push rod 906 pushes the arc-shaped push plate 907 and the second anti-slip pad 908 back to their original positions. The arc-shaped push plate 907 and the second anti-slip pad 908 then press and fix the load-bearing rod 903, thereby securing the triangular cylinder 901. Since it cannot rotate, no matter how the overall tilt angle of the climbing mechanism 5 changes, the top of the triangular tube 901 can be kept horizontal after adjustment, so that people can step on the triangular tube 901 more stably and safely. In addition, the load-bearing bar 903 is connected to the inside of the triangular tube 901 through the fixing block 904. The triangular tube 901 and the load-bearing bar 903 are combined into a whole, which strengthens the bending resistance of the entire pedal assembly 9. Neither the triangular tube 901 nor the load-bearing bar 903 is more likely to be bent.

[0057] To improve the safety of climbing mechanism 5, such as Figure 11 , 14 As shown, the limiting component 8 includes a slide rod 801 fixedly installed at the top of the escalator railing 10. A slide seat 802 is sleeved on the outer end of the slide rod 801. The slide seat 802 can adjust the height of the slide seat 802 on the slide rod 801 according to the actual situation. Two protrusions are fixedly provided on the outer end of the slide rod 801. Two grooves that match the protrusions are opened on the inner wall of the slide seat 802, which play a limiting role. The slide block 802 is fitted with a fastening bolt by threads. A connecting pipe 803 is fixedly provided on the side of the slide block 802 facing the pedal assembly 9. An air bag 804 is fixedly provided at one end of the connecting pipe 803. An inflation pipe with a valve is fixedly provided on the connecting pipe 803.

[0058] After the footboard assembly 9 is secured, bridge maintenance personnel can ascend to the top of the movable platform 1 via the climbing mechanism 5. Those at the top of the platform 1 can also return to the ship's deck via the climbing mechanism 5. When personnel move up and down via the climbing mechanism 5, the two ladder railings 10 provide protection. Multiple restraint components 8 are installed on one of the ladder railings 10, such as... Figure 1114. Vertically, there is a slide bar 801, fixed to the escalator handrail 10; horizontally, there is an airbag 804. The slide seat 802 can slide on the slide bar 801, thereby driving the connecting pipe 803 and the airbag 804 to move up and down along the slide bar 801. This allows the height of the airbag 804 to be adjusted according to the height of the person passing through. Inflation is carried into the connecting pipe 803 through the inflation pipe, and air then enters the airbag 804, causing the airbag 804 to inflate. The inflated airbag 804 acts as a barrier, that is, it blocks the space at the top of the climbing mechanism. As a restriction, when people pass through the climbing mechanism 5, the airbag 804 is located above it. Due to the presence of the airbag 804, people walking upward can only lean forward slightly and cannot lean backward, while people walking downward can only lean backward slightly. This forces people to adjust their center of gravity when passing through the climbing mechanism 5, bringing their center of gravity closer to the climbing mechanism 5, thus making it safer to pass through the climbing mechanism 5. Furthermore, because the airbag 804 is inflated, it is elastic, so even if a collision occurs, it will not cause injury to people.

[0059] The restrictive component 8 and the pedal component 9 work together to avoid the safety hazards caused by the structure of the climbing mechanism 5, and to standardize the posture of personnel when moving on the climbing mechanism 5, thus greatly improving the safety of relevant personnel when going up and down the activity platform 1.

[0060] The aerial work platform with electromagnetic protection provided by this invention is used as follows: The base plate 4 is installed on the hull of the water-based work vessel. The movable platform 1 is moved upward by the scissor lift 3 until it reaches the bottom of the bridge. When the movable platform 1 rises to the designated height, the electromagnet 709 is de-energized, and the plug rod 710 extends so that the output shaft of the motor 703 is connected to the central shaft 706. Then the motor 703 is turned on, so that the steel cable 704 pulls the electronic tension gauge 705 downward to simulate the load on the movable platform 1. When the tension value of the electronic tension gauge 705 reaches the load requirement, the motor 703 is turned off. As the platform 1 moves upward, the tilt angle of the climbing mechanism 5 changes continuously, and the angle of the pedal assembly 9 also changes continuously. When the platform 1 is in place, the electric push rod 906 controls the arc-shaped push plate 907 to move downward, causing the triangular tube 901 to be unrestrained. At this time, under the weight of the weight block 902, the top of the triangular tube 901 rotates to a horizontal position. Then, the electric push rod 906 pushes the arc-shaped push plate 907 to press and fix the load-bearing rod 903, thereby fixing the triangular tube 901 and preventing it from rotating. After the step assembly 9 is fixed, the relevant bridge maintenance personnel can climb to the top of the platform 1 via the climbing mechanism 5. The two escalator railings 10 provide protection. Multiple restraint components 8 are installed on one of the escalator railings 10. Due to the presence of the airbag 804, people going up can only lean forward, while people going down can only lean back, thus forcing people to adjust their center of gravity when passing through the climbing mechanism 5. The guardrail assembly 2 serves a protective function. When someone leans against the guardrail assembly 2, the curved bar 201 will be subjected to external force and tend to rotate outward of the movable platform 1. At this time, the curved bar 201 will press the pressure sensor switch 209 under the action of external force. When the force on the pressure sensor switch 209 reaches the trigger condition, it will control the alarm 208 to sound an alarm, thereby giving a reminder.

[0061] The various embodiments in this specification are described in a related manner. The same or similar parts between the various embodiments can be referred to each other. Each embodiment focuses on describing the differences from other embodiments.

[0062] The above description is merely a preferred embodiment of the present invention and is not intended to limit the scope of protection of the present invention. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention are included within the scope of protection of the present invention.

Claims

1. A high-altitude lifting platform with electromagnetic protection, comprising a movable platform (1), wherein a scissor lift frame (3) capable of controlling the up-and-down movement of the movable platform (1) is installed at the bottom end of the movable platform (1), and a base plate (4) is installed at the bottom end of the scissor lift frame (3), characterized in that: The movable platform (1) has an electromagnetic protection structure inside. The movable platform (1) has a rectangular cross-section. Four guardrail components (2) are installed on the top of the movable platform (1). The guardrail components (2) enclose the top of the movable platform (1) into a semi-enclosed space. The guardrail assembly (2) includes a curved rod (201), and a rotating shaft (207) is provided on the inner side of the curved rod (201). Both ends of the rotating shaft (207) are fixedly connected to the inner side of the curved rod (201). The outer end of the rotating shaft (207) is mounted with a mounting seat (206) through a bearing. The mounting seat (206) is fixedly mounted on the top of the movable platform (1). Both ends of the bent rod (201) are provided with U-shaped clamps (205). The U-shaped clamps (205) are fixedly installed on the top of the movable platform (1). An alarm (208) is installed on the side of the U-shaped clamp (205) facing the movable platform (1). Pressure sensing switches (209) that can trigger the alarm (208) are installed on the inner wall of the U-shaped clamp (205) away from and close to the movable platform (1). The two ends of the bent rod (201) are located inside the two U-shaped clamps (205), and the two pressure sensing switches (209) are in contact with the bent rod (201) extending into the U-shaped clamps (205); The activity platform (1) is fixedly provided with a boss (6) on one side, and a fence is fixedly provided at the top of the boss (6). A climbing mechanism (5) is installed at the bottom of the boss (6). The climbing mechanism (5) includes two side plates (11) that are hinged to the bottom of the boss (6). One end of the side plate (11) is equipped with a roller (12) via a pivot, and the top of the side plate (11) is equipped with an escalator railing (10), and one of the escalator railings (10) is equipped with multiple limiting components (8) that serve a protective function. Multiple pedal assemblies (9) are provided between the two side plates (11), and the boss (6) also includes a protective plate (13), which is located at the bottom of the two side plates (11) and connected to the two side plates (11) by bolts; The pedal assembly (9) includes a triangular tube (901), and a first anti-slip pad (905) is fixedly provided at the top of the triangular tube (901) to play an anti-slip role. A load-bearing rod (903) is provided inside the triangular tube (901), and the two ends of the load-bearing rod (903) extend to both sides of the triangular tube (901) respectively. The two ends of the load-bearing rod (903) are fixedly connected to two side plates (11) respectively. The outer end of the load-bearing rod (903) is fitted with two fixing blocks (904) through bearings. The fixing blocks (904) are fixedly installed at the top inside of the triangular tube (901). The bottom inside of the triangular tube (901) is fixedly fitted with a weight (902). The cross-section of the triangular tube (901) is an equilateral triangle. In its natural state, the weight of the weight (902) keeps the top of the triangular tube (901) horizontal. The bottom end of the load-bearing rod (903) is provided with an arc-shaped push plate (907). A second anti-slip pad (908) that contacts the outer end of the load-bearing rod (903) is fixedly provided on the inner wall of the arc-shaped push plate (907). Two electric push rods (906) are fixedly provided at the bottom end of the arc-shaped push plate (907). The bottom end of the electric push rod (906) is fixedly connected to the weight block (902). The limiting component (8) includes a slide bar (801) fixedly installed at the top of the escalator railing (10), and a slide seat (802) is sleeved on the outer end of the slide bar (801). The outer end of the slide rod (801) is fixed with two protrusions, and the inner wall of the slide block (802) has two grooves that match the protrusions.

2. The aerial work platform with electromagnetic protection according to claim 1, characterized in that: A fixed frame (202) is installed on the inner side of the bent rod (201). An isolation cloth (203) capable of blocking electromagnetic radiation is provided on the inner wall of the fixed frame (202). Multiple protective rods (204) are provided on both sides of the isolation cloth (203). Both ends of the protective rods (204) are fixedly connected to the inner wall of the fixed frame (202). One of the guardrail components (2) has a support rod installed at the top, and an indicator light and a distance sensing switch that can trigger the indicator light are installed at the top of the support rod.

3. The aerial work platform with electromagnetic protection according to claim 2, characterized in that: The activity platform (1) includes a platform body (101), and the top of the platform body (101) is provided with an installation groove (102). The electromagnetic protection structure includes a protective pad (103) of the same material as the isolation cloth (203). The protective pad (103) is located inside the installation groove (102). The top of the protective pad (103) is provided with a cover plate (104). The top of the cover plate (104) is flush with the upper surface of the platform body (101). The cover plate (104) is surrounded between four guardrail components (2). The protective pad (103) includes a radiation-proof fabric (14), with a metal fiber cloth (15) fixedly attached to the top of the radiation-proof fabric (14), and a conductive rubber (16) fixedly attached to the top of the metal fiber cloth (15).

4. The aerial work platform with electromagnetic protection according to claim 1, characterized in that: The bottom of the movable platform (1) is provided with an inspection mechanism (7), which includes an electronic tension gauge (705) installed at the bottom of the movable platform (1). The electronic tension gauge (705) can detect the magnitude of the tension. The inspection mechanism (7) also includes a support frame (701) and a vertical plate (702) fixedly installed on the top of the base plate (4). The support frame (701) has a central shaft (706) inside, and both ends of the central shaft (706) are movably connected to the inner wall of the support frame (701) through a rotating shaft. A steel cable (704) is fixedly provided at the outer end of the central shaft (706). The steel cable (704) is wound around the outer end of the central shaft (706). One end of the steel cable (704) is connected to the electronic tension gauge (705) through a hook.

5. A high-altitude lifting platform with electromagnetic protection according to claim 4, characterized in that: A motor (703) capable of driving the central shaft (706) to rotate is installed on the upright plate (702). The output shaft of the motor (703) passes through the upright plate (702), and a connection hole is provided at one end of the output shaft of the motor (703). One end of the central shaft (706) extends to one side of the support frame (701) and has a contraction hole (707). An electromagnet (709) is fixed on the inner wall of the contraction hole (707). A spring (708) is fixed on the electromagnet (709). An iron rod (710) is fixed on one end of the spring (708). The cross-section of the insertion rod (710) is rectangular. In the connected state, one end of the insertion rod (710) extends into the connection hole on the output shaft of the motor (703).

6. A high-altitude lifting platform with electromagnetic protection according to claim 1, characterized in that: The slide (802) is threaded with a fastening bolt, and a connecting pipe (803) is fixedly provided on the side of the slide (802) facing the pedal assembly (9); an air bag (804) is fixedly provided at one end of the connecting pipe (803), and an inflation pipe with a valve is fixedly provided on the connecting pipe (803).

Images