Electromagnetic anti-falling structure of attached lifting scaffold
By introducing an electromagnetic catapult and sensor control system into the lifting scaffold, a dual anti-fall function combining mechanical and electromagnetic methods is achieved, solving the risk of falls caused by the failure of the electric device and improving the safety and reliability of the lifting scaffold.
Patent Information
- Application Number
- CN202521551116.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-07-24
- Publication Date
- 2026-06-19
- Estimated Expiration
- 2035-07-24
Smart Images
Figure CN224379371U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of attached lifting scaffolding technology, specifically to an electromagnetic anti-fall structure for attached lifting scaffolding. Background Technology
[0002] Attached lifting scaffolding equipment is a new type of scaffolding technology that has developed rapidly since the beginning of this century, and has had a significant impact on the progress of construction technology in my country. It transforms high-altitude operations into low-altitude operations and suspended operations into operations within the scaffolding structure, exhibiting significant low-carbon characteristics, high-tech content, and greater economy, safety, and convenience.
[0003] Existing scaffolding uses electric lifting devices. If the electric devices malfunction, the scaffolding is at risk of falling, which could endanger construction workers. Utility Model Content
[0004] The purpose of this invention is to provide an attached lifting scaffold electromagnetic anti-fall structure to solve the problems mentioned in the background art.
[0005] To achieve the above objectives, the present invention provides the following technical solution: an attached lifting scaffold electromagnetic anti-fall structure, comprising an electromagnetic catapult device, wherein the electromagnetic catapult device comprises an outer housing, an electromagnetic coil is disposed inside the housing, and a catapult armature is axially slidably mounted inside the electromagnetic coil, a compression spring is sleeved on the portion of the catapult armature located outside the housing, and a slider connecting shaft is fixedly connected to both sides of the end of the catapult armature.
[0006] Furthermore, the housing is fixedly mounted on the mounting plate, and a controller is bolted to the bottom of the mounting plate.
[0007] Furthermore, the mounting plate is fixedly installed on the bottom front of the wall-mounted support, and a hanging point bracket is fixedly installed on the top front of the wall-mounted support.
[0008] Furthermore, support plates are fixedly installed on both sides of the bottom end of the mounting plate, and wire holes are opened on the side ends of the support plates.
[0009] Furthermore, a distance and speed measuring sensor is bolted to the outside of the support plate, and the signal line electrically connected to the distance and speed measuring sensor passes through the wire hole and is connected to the controller.
[0010] Furthermore, a load-bearing block is fixedly installed on the top of the mounting plate, and the load-bearing block is fixedly connected to the inner wall of the wall-mounted support through a guide rod.
[0011] Furthermore, a fall-prevention slider is slidably mounted on the guide rod, and the connecting ear plates on both sides of the bottom end of the fall-prevention slider are connected to the slider connecting shaft.
[0012] Compared with the prior art, the present invention has the following beneficial effects:
[0013] 1. In use, during the ascent phase of the scaffold, the anti-fall slider relies on the inclined surface for full-time anti-fall protection. During the descent phase, the electromagnetic coil attracts the ejector armature and causes the anti-fall slider to retract. The electric hoist travels at approximately 1.25 mm / s per minute, and the anti-fall bar on the guide rail takes approximately 32 seconds. If the scaffold's descent speed far exceeds 1.25 mm / s, the distance and speed sensors transmit an overspeed signal to the controller. The controller then de-energizes the electromagnetic coil, and the anti-fall slider quickly ejects under the action of the compression spring to achieve anti-fall protection. This application, through the cooperation of the electromagnetic ejection device and the anti-fall slider, relies on the inclined surface of the anti-fall slider for mechanical anti-fall protection throughout the ascent phase without the need for electrical intervention. During the descent phase, electromagnetic dynamic protection is provided, triggering braking only in case of abnormal overspeed. Moreover, the electromagnetic power-off braking is a passive safety mechanism. Even if the control system malfunctions, the compression spring can still force the anti-fall slider to eject after power failure, avoiding the risk of single-point failure. This design integrates the reliability of mechanical anti-fall protection, the precision of electromagnetic control, and the intelligent judgment capability of sensors, significantly improving the safety redundancy of the lifting scaffold. Attached Figure Description
[0014] Figure 1 This is a front view structural diagram of the device of this utility model;
[0015] Figure 2 This is a three-dimensional structural diagram of the device of this utility model;
[0016] Figure 3 This is a cross-sectional structural diagram of the device of this utility model.
[0017] In the diagram: 1. Electromagnetic catapult device; 101. Housing; 102. Electromagnetic coil; 103. Catapult armature; 104. Compression spring; 105. Slider connecting shaft; 2. Mounting plate; 3. Controller; 4. Wall-mounted support; 5. Lifting point bracket; 6. Support plate; 7. Cable hole; 8. Distance and speed sensor; 9. Load-bearing block; 10. Guide rod; 11. Anti-fall slider; 12. Connecting ear plate. Detailed Implementation
[0018] The embodiments of this utility model will be described in further detail below with reference to the accompanying drawings and examples. The following examples are for illustrative purposes only and should not be construed as limiting the scope of this utility model.
[0019] like Figures 1 to 3As shown, an attached lifting scaffold electromagnetic anti-fall structure includes an electromagnetic ejection device 1. The electromagnetic ejection device 1 includes an outer shell 101, an electromagnetic coil 102 inside the shell 101, and an ejection armature 103 axially slidably mounted inside the electromagnetic coil 102. A compression spring 104 is sleeved on the portion of the ejection armature 103 outside the shell 101, and slider connecting shafts 105 are fixedly connected to both ends of the ejection armature 103. The shell 101 is fixedly mounted on a mounting plate 2, and a controller 3 is bolted to the bottom of the mounting plate 2. The mounting plate 2 is fixedly mounted on the bottom front of a wall-mounted support 4, and a lifting point bracket 5 is fixedly mounted on the top front of the wall-mounted support 4. Support plates 6 are fixedly mounted on both sides of the bottom of the mounting plate 2, and wire holes 7 are opened on the side of the support plates 6. Bolts are used to fix the support plates 6. A distance and speed sensor 8 is fixed, and the signal line connected to the distance and speed sensor 8 passes through the wire hole 7 and is connected to the controller 3. During the rising phase of the frame, the anti-fall slider 11 relies on the inclined plane to prevent falling throughout the entire process. During the falling phase of the frame, the electromagnetic coil 102 attracts the ejector armature 103 and drives the anti-fall slider 11 to retract. If the frame falls too fast, the distance and speed sensor 8 transmits the overspeed signal to the controller 3. The controller 3 then controls the electromagnetic coil 102 to cut off the power. Under the action of the compression spring 104, the anti-fall slider 11 quickly pops out to achieve anti-fall. A load-bearing block 9 is fixedly installed on the top of the mounting plate 2, and the load-bearing block 9 is fixedly connected to the inner wall of the wall support 4 through the guide rod 10. The anti-fall slider 11 is slidably installed on the guide rod 10, and the connecting ear plates 12 on both sides of the bottom end of the anti-fall slider 11 are connected to the slider connecting shaft 105.
[0020] It should be further explained that: the sensor calculates the real-time speed by continuously measuring the rate of change of displacement of the frame relative to the guide rail. When the frame is descending normally, the sensor outputs a stable signal. If the frame falls unexpectedly and the speed far exceeds the set threshold, the sensor immediately generates an overspeed signal. After receiving the overspeed signal, the control module cuts off the power supply circuit of the coil within milliseconds. After the coil is de-energized, it loses its magnetic attraction. Under the action of the spring, the armature drives the anti-fall block to pop out instantly, mechanically locking into the guide rail crossbar to achieve emergency braking. The above-mentioned electronic control system is a mature existing technical solution, so it is not described in detail in this application.
[0021] Working principle: During the upward phase of the scaffold, the anti-fall slider 11 relies on the inclined plane for full-range anti-fall protection. During the downward phase, the electromagnetic coil 102 attracts the ejector armature 103 and drives the anti-fall slider 11 to retract. The electric hoist operates at a speed of approximately 1.25 mm / s per minute, and the scaffold passes the anti-fall bar on the guide rail in approximately 32 seconds. If the scaffold's downward speed far exceeds 1.25 mm / s, the distance and speed sensor 8 transmits an overspeed signal to the controller 3. The controller 3 then de-energizes the electromagnetic coil 102, and under the action of the compression spring 104, the anti-fall slider 11 quickly ejects to achieve anti-fall protection. This application... Through the cooperation of the electromagnetic catapult 1 and the anti-fall slider 11, the mechanical structure anti-fall is achieved entirely by the inclined surface of the anti-fall slider 11 during the ascent phase without the need for power intervention. During the descent phase, electromagnetic dynamic protection is provided, and braking is triggered only in case of abnormal overspeed. Moreover, the electromagnetic power-off braking is a passive safety mechanism. Even if the control system fails, the compression spring 104 can still force the anti-fall slider 11 to pop out after power failure, avoiding the risk of single-point failure. This design integrates the reliability of mechanical anti-fall, the precision of electromagnetic control, and the intelligent judgment capability of sensors, significantly improving the safety redundancy of the lifting scaffold.
[0022] The embodiments of this utility model are given for illustrative and descriptive purposes only, and are not intended to be exhaustive or to limit the utility model to the forms disclosed. Many modifications and variations will be apparent to those skilled in the art. The embodiments were chosen and described in order to better illustrate the principles and practical applications of this utility model, and to enable those skilled in the art to understand this utility model and design various embodiments with various modifications suitable for a particular purpose.
Claims
1. An attached lifting scaffold electromagnetic fall arrest structure, comprising an electromagnetic ejection device (1), characterized in that, The electromagnetic catapult device (1) includes a housing (101) disposed on the outside. An electromagnetic coil (102) is disposed inside the housing (101), and a catapult armature (103) is axially slidably installed inside the electromagnetic coil (102). A compression spring (104) is sleeved on the part of the catapult armature (103) located outside the housing (101), and a slider connecting shaft (105) is fixedly connected to both sides of the end of the catapult armature (103).
2. The electromagnetic anti-falling structure of the attached lifting scaffold according to claim 1, characterized in that, The housing (101) is fixedly installed on the mounting plate (2), and the controller (3) is bolted to the bottom of the mounting plate (2).
3. The electromagnetic anti-falling structure of the attached lifting scaffold according to claim 2, characterized in that, The mounting plate (2) is fixedly installed on the bottom front of the wall-mounted support (4), and a hanging point bracket (5) is fixedly installed on the top front of the wall-mounted support (4).
4. The electromagnetic anti-falling structure of the attached lifting scaffold according to claim 3, characterized in that, The mounting plate (2) has a support plate (6) fixedly installed on both sides of its bottom end, and the support plate (6) has a wire hole (7) on its side end.
5. The electromagnetic anti-falling structure of the attached lifting scaffold according to claim 4, characterized in that, The support plate (6) is bolted to the outside of the distance measuring and speed measuring sensor (8), and the signal line connected to the distance measuring and speed measuring sensor (8) passes through the wire hole (7) and is connected to the controller (3).
6. The electromagnetic anti-falling structure of the attached lifting scaffold according to claim 5, characterized in that, The mounting plate (2) has a load-bearing block (9) fixedly installed at its top, and the load-bearing block (9) is fixedly connected to the inner wall of the wall-mounted support (4) through the guide rod (10).
7. The attached lifting scaffold electromagnetic fall arrestor structure according to claim 6, characterized in that, A fall-prevention slider (11) is slidably mounted on the guide rod (10), and the connecting ear plates (12) on both sides of the bottom end of the fall-prevention slider (11) are connected to the slider connecting shaft (105).