Self-locking type anti-falling device with monitoring function

Abstract

The invention discloses a self-locking type anti-falling device with a monitoring function, and relates to the technical field of safety protection, the self-locking type anti-falling device comprises a guide rail, an anti-falling device and connecting fittings, the guide rail is fixedly mounted on an iron tower through the connecting fittings, the anti-falling device is slidably mounted on the guide rail, and the anti-falling device comprises an anti-falling main body and a pull arm; compared with an existing anti-falling device, the anti-falling device is provided with the two braking units, each braking unit is internally provided with the monitoring module, and the monitoring modules are used for monitoring the opening and closing states of the anti-falling device, so that nearby ground personnel can timely know the safety state of overhead working personnel, and the safety of the overhead working personnel is improved. And meanwhile, when the pull arm abuts against the guide rail in the forward direction to achieve basic locking, lateral locking is formed through two braking units symmetrically arranged in the anti-falling main body, potential safety hazards caused by failure of a single locking structure are avoided, the anti-falling device is further provided with a reciprocating vibration assembly and a cleaning piece, and therefore automatic front cleaning of the advancing path of the guide rail is achieved.

Description

Technical Field

[0001] This invention relates to the field of safety protection technology, specifically a self-locking fall arrestor with monitoring function. Background Technology

[0002] In fields such as power transmission, communication base station construction, and high-rise building construction, high-altitude operations are common. Workers need to climb or move along structures such as iron towers, poles, and scaffolding. Fall protection devices are the core protective equipment to ensure their life safety, and their performance and reliability are directly related to the life safety of the workers.

[0003] For example, patents "CN214344043U A Fall Preventer for Aluminum-Clad Steel Guide Rails" and "CN223323928U A Fall Preventer and Fall Preventing Device for High-Altitude Operations" both disclose a technical solution for preventing falls from heights. However, most existing fall prevention devices adopt a single locking structure design, usually relying solely on the contact between the pull arm or a single braking component and the guide rail to achieve the locking function. During long-term use, the locking component is prone to performance degradation due to wear and metal fatigue, or failure due to foreign objects stuck on the guide rail surface. Once the locking structure fails to function properly, it will directly lead to a fall. The current fall arrestor system is ineffective in preventing falls due to the loss of its function. Furthermore, it typically lacks real-time monitoring of the locking status, preventing ground safety personnel from promptly assessing the safety of workers at height. When a fall occurs, emergency rescue procedures often rely on workers actively calling for help, resulting in significant information lag. Finally, existing fall arrestors generally lack effective self-cleaning mechanisms for the guide rails. In high-altitude work environments, guide rails are constantly exposed to outdoor conditions, inevitably leading to the accumulation of foreign objects. Failure to clean these objects promptly further reduces the reliability of the locking function. Summary of the Invention

[0004] The purpose of this invention is to provide a self-locking fall arrestor with monitoring function to solve the problems raised in the prior art.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a self-locking fall arrestor with monitoring function, comprising a guide rail, a fall arrestor, and connecting hardware. The guide rail is fixedly installed on the tower via several connecting hardware components. The fall arrestor is slidably installed on the guide rail. The fall arrestor includes a fall arrestor body and a pull arm. The fall arrestor body has a movable cavity. One end of the pull arm is located in the movable cavity and connected to the fall arrestor body via a first rotating shaft. The other end of the pull arm has a locking hole and extends out of the fall arrestor body. When a worker is climbing, a safety rope must be connected to the locking hole on the pull arm. Under normal circumstances, the pull arm and the guide rail are not in a tightly pressed state. In the event of a slip, due to the worker's own weight, the safety rope will pull the pull arm to rotate in the opposite direction. At this time, the pull arm will press against the guide rail. The device incorporates a track to achieve a locking and fall-prevention function. Compared to current fall-prevention devices, this invention also features two second cavities within the fall-prevention body. These two second cavities are positioned opposite each other on either side of the movable cavity. Each second cavity contains a braking unit, and each braking unit is connected to a first rotating shaft. When a slippage occurs and the pull arm rotates in the reverse direction, the two braking units simultaneously trigger a locking action. This achieves a double self-locking effect through the forward clamping of the pull arm and the lateral locking of the two braking units, significantly improving the reliability and safety of the fall-prevention device. Finally, this invention includes a monitoring module within each braking unit to monitor the opening and closing status of the fall-prevention device, allowing nearby ground personnel to promptly ascertain the safety status of personnel working at height and respond to emergencies.

[0006] Furthermore, the fall arrestor body is provided with a first traveling wheel and a second traveling wheel at both ends along the extension direction of the guide rail. The first traveling wheel and the second traveling wheel can rotate freely around their own central axis and move synchronously with the fall arrestor body along the extension direction of the guide rail, so as to reduce the frictional resistance between the fall arrestor body and the guide rail and ensure the stability of the movement of the fall arrestor body. A cleaning component is provided on the side of the second traveling wheel away from the first traveling wheel. During the process of the fall arrestor traveling along the prescribed path of the guide rail, the second traveling wheel is in front of the first traveling wheel. The cleaning component on the side away from the first traveling wheel will preferentially contact the surface of the guide rail. The cleaning component can achieve pre-cleaning of the guide rail travel path, ensuring that there are no impurities blocking the subsequent rolling area of ​​the first traveling wheel and the contact area between the braking unit inside the fall arrestor body, the pull arm and the guide rail, and avoiding slippage or incomplete locking when the pull arm is pressed against the guide rail.

[0007] Furthermore, the braking unit includes a transmission assembly and a brake block. A first cavity is provided at the end of the second cavity near the guide rail. The brake block is movably installed in the first cavity via a first compression spring. The transmission assembly is located in the second cavity. The brake block is connected to the first rotating shaft via the transmission assembly. Under normal conditions, the first compression spring is in a relaxed state, and a certain gap is maintained between the brake block and the guide rail. When a slippage occurs, the pull arm drives the first rotating shaft to rotate in the opposite direction. At this time, under the action of the transmission assembly, the brake blocks in the two braking units will overcome the elastic force of the first compression spring and move closer to the guide rail, eventually making tight contact with the side of the guide rail. The brake blocks in the two braking units achieve the function of lateral locking to ensure the reliability of the fall arrestor.

[0008] Furthermore, the transmission assembly includes a fixed sleeve, a first transmission rod, and a transmission block. The fixed sleeve is mounted on a first rotating shaft. One end of the first transmission rod is connected to the fixed sleeve via a connecting rope, and the other end of the first transmission rod is connected to the transmission block via a composite hinge. The contact ends of the brake block and the transmission block are both wedge-shaped structures. In this invention, the fixed sleeve rotates synchronously with the first rotating shaft. When the pull arm slips and causes the first rotating shaft to rotate in the opposite direction, the fixed sleeve rotates accordingly and pulls the first transmission rod via the connecting rope, causing the end of the first transmission rod near the transmission block to move towards the first cavity. Through the transmission action of the composite hinge, the first transmission rod pushes the transmission block closer to the brake block. Since the contact ends of the brake block and the transmission block are both wedge-shaped structures, the movement of the transmission block will generate a lateral thrust on the brake block, forcing the brake block to overcome the elastic force of the first compression spring and move towards the guide rail until the brake block is tightly abutted against the side of the guide rail, achieving lateral locking.

[0009] Furthermore, the monitoring module includes a piezoelectric alarm element, which is located at the end of the brake block near the first compression spring. The piezoelectric alarm element sends a signal to the ground monitoring terminal via a wireless transmitter. When the brake block moves along the guide rail due to slippage, it compresses the first compression spring and exerts pressure on the piezoelectric alarm element. The piezoelectric alarm element generates an electrical signal under pressure, which is transmitted to the ground monitoring terminal in real time via the wireless transmitter. This allows ground personnel to be aware that the fall arrestor has entered the locked state and to communicate with high-altitude workers in a timely manner. Based on the communication results, appropriate emergency measures can be taken. When the danger is eliminated and the brake block resets under the action of the first compression spring, the pressure on the piezoelectric alarm element gradually disappears, and the electrical signal weakens until it disappears. The ground monitoring terminal automatically deactivates the alarm and resumes monitoring the normal operation of the fall arrestor.

[0010] Furthermore, the first transmission rod is connected to the fall arrestor body via a second rotating shaft. The second rotating shaft is located at the end of the first transmission rod near the composite hinge. The first transmission rod is rotatably mounted within the second cavity via the second rotating shaft, forming a lever fulcrum. When the fixed sleeve pulls the connecting rope, the end of the first transmission rod away from the composite hinge is subjected to tension and rotates around the second rotating shaft towards the fixed sleeve, while the end near the composite hinge swings towards the transmission block. This pushes the transmission block towards the brake block via the composite hinge. This technical solution makes the force on the first transmission rod more rational, efficiently converting the tension of the connecting rope into a thrust on the transmission block, thus enhancing transmission efficiency. Simultaneously, the second rotating shaft constrains the rotation trajectory of the first transmission rod, ensuring it always moves along a preset path during operation, preventing transmission failure due to deviation, and further improving the stability of the braking unit's response.

[0011] Furthermore, the fall arrestor body has two third cavities near the second traveling wheel. The two third cavities are located on both sides of the second traveling wheel, and each third cavity contains a reciprocating vibration component. The cleaning component is connected to the second traveling wheel through the two reciprocating vibration components. When the second traveling wheel moves along the guide rail, it drives the two reciprocating vibration components to move synchronously. The two reciprocating vibration components drive the cleaning component to vibrate as it moves with the fall arrestor body. Under the action of vibration, the cleaning effect of the cleaning component on the guide rail surface is improved, ensuring that there is no foreign object interference when the pull arm contacts the guide rail, and ensuring the reliable realization of the locking function.

[0012] Furthermore, a support block is also provided in the third cavity. The reciprocating vibration assembly includes a cam and a second transmission rod. The cam is connected to the second traveling wheel via a third rotating shaft. One end of the second transmission rod is connected to the cleaning component via a connecting frame, and the other end of the second transmission rod is inserted into the support block. A second compression spring is wound around the second transmission rod, located between the connecting frame and the support block. When the second traveling wheel moves along the guide rail, the cam rotates synchronously under the action of the third rotating shaft, and its protruding part periodically pushes against the second transmission rod, forcing the second transmission rod to move away from the cam. Since the second transmission rod is connected to the cleaning component via the connecting frame... The connection allows the cleaning component to move synchronously away from the second traveling wheel. At this time, the second compression spring is compressed by the connecting frame and accumulates elastic potential energy. When the convex part of the cam rotates past the contact position with the second transmission rod, the second compression spring releases its elastic potential energy, pushing the second transmission rod and the cleaning component to reset in the opposite direction. Through the above technical solution, the second transmission rod, driven by the cam and reset by the second compression spring, will drive the cleaning component to move along the guide rail with the anti-fall body. At the same time, through its own vibration, it will enhance the contact force and friction frequency with the guide rail surface, which can more effectively peel off foreign objects attached to the guide rail surface, providing a guarantee for reliable contact between the pull arm and the guide rail and the stable realization of the locking function.

[0013] Furthermore, lateral guide wheels are provided on both the front and rear sides of the fall arrestor body. The axis of each lateral guide wheel is perpendicular to the guide rail. The lateral guide wheels limit the lateral displacement of the fall arrestor body and ensure the stability of the fall arrestor body as it moves on the guide rail.

[0014] Compared with existing technologies, the advantages of this invention are as follows: This invention features two braking units, each equipped with a monitoring module. These modules monitor the opening and closing status of the fall arrestor, allowing nearby ground personnel to promptly ascertain the safety status of workers at height and respond quickly to emergencies. Furthermore, while the arm's forward clamping against the guide rail achieves basic locking, the two symmetrically arranged braking units within the fall arrestor body create lateral locking. This dual self-locking mechanism, achieved through the arm's forward clamping and the lateral locking of the two braking units, significantly improves the reliability and safety of the fall arrestor, avoids safety hazards caused by the failure of a single locking structure, and significantly reduces the risk of falls at height, providing more reliable safety for workers. Additionally, the braking... The transmission components in the unit achieve precise triggering of the locking action through the coordinated cooperation of the fixed sleeve, the first transmission rod, and the transmission block, combined with the force transmission characteristics of the wedge structure. The first transmission rod forms a lever structure through the second rotating shaft, which not only makes the force distribution more reasonable but also efficiently transmits the tension and converts it into thrust, improving transmission efficiency. Finally, the invention also includes a reciprocating vibration component and a cleaning component. When the fall arrestor moves along the guide rail, the second traveling wheel drives the cleaning component to vibrate while moving with the fall arrestor, thereby enhancing the contact strength and friction frequency between the cleaning component and the guide rail surface. This achieves automatic pre-cleaning of the guide rail travel path, ensuring that the subsequent rolling area of ​​the first traveling wheel, the contact area between the braking unit and the pull arm and guide rail are free of impurities, and avoiding problems such as pull arm slippage and loose locking caused by foreign objects. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the overall structure of the present invention; Figure 2 This is a schematic diagram of the fall arrestor structure of the present invention; Figure 3 This is a schematic diagram of the internal structure of the fall arrestor of the present invention; Figure 4 This is a schematic diagram showing the position and structure of the first cavity and the third cavity of the present invention; Figure 5 This is a schematic diagram of the braking unit structure of the present invention; Figure 6 This is a schematic diagram of the brake block and transmission block structure of the present invention; Figure 7 This is a schematic diagram showing the position of the brake block in this invention; Figure 8 This is a schematic diagram of the reciprocating vibration component structure of the present invention.

[0016] In the diagram: 1. Guide rail; 2. Fall arrestor; 21. Fall arrestor body; 211. First cavity; 212. Second cavity; 2121. Fixing sleeve; 2122. First transmission rod; 213. Third cavity; 2131. Cam; 2132. Second transmission rod; 22. Side guide wheel; 23. Pull arm; 24. Cleaning component; 241. Connecting frame; 25. First traveling wheel; 26. Second traveling wheel; 27. Brake block; 28. Transmission block; 3. Connecting hardware. Detailed Implementation

[0017] 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.

[0018] Example: Figures 1-8 As shown, this invention provides a technical solution: a self-locking fall arrestor with monitoring function, including a guide rail 1, a fall arrestor 2, and connecting hardware 3. The guide rail 1 is fixedly installed on the iron tower by several connecting hardware 3. The fall arrestor 2 is slidably installed on the guide rail 1. The fall arrestor 2 includes a fall arrestor body 21 and a pull arm 23. The fall arrestor body 21 has a movable cavity. One end of the pull arm 23 is located in the movable cavity and connected to the fall arrestor body 21 through a first rotating shaft. The other end of the pull arm 23 has a locking hole and extends out of the fall arrestor body 21. When the worker is climbing, the safety rope needs to be connected to the locking hole on the pull arm 23. Under normal circumstances, the pull arm 23 and the guide rail 1 are in a non-tight state. In the event of a slip, due to the worker's own weight, the safety rope will pull the pull arm 23 to rotate in the opposite direction. At this time, the pull arm 23 will press against the guide rail 1 to achieve the locking fall arrest function (the pull arm 23...). The technical effect achieved is a conventional technique in this field (the specific structure and implementation method are not described). Compared with current fall arrest devices, this invention also provides two second cavities 212 inside the fall arrest body 21. The two second cavities 212 are arranged opposite each other on both sides of the movable cavity. Each second cavity 212 is provided with a braking unit, and each braking unit is connected to the first rotating shaft. When the pull arm 23 rotates in the opposite direction in the event of a slippage, the two braking units will trigger a locking action simultaneously. The purpose of double self-locking is achieved through the forward pressing of the pull arm 23 and the lateral locking of the two braking units, which greatly improves the reliability and safety of the fall arrest device. Finally, this invention provides a monitoring module in each braking unit to monitor the opening and closing status of the fall arrester 2, so that nearby ground personnel can be informed of the safety status of the high-altitude workers in a timely manner and respond to emergencies.

[0019] like Figures 1-3As shown, the fall arrestor body 21 is provided with a first traveling wheel 25 and a second traveling wheel 26 at both ends along the extension direction of the guide rail 1. The first traveling wheel 25 and the second traveling wheel 26 can rotate freely around their own central axis and move synchronously with the fall arrestor body 21 along the extension direction of the guide rail 1 to reduce the frictional resistance between the fall arrestor body 21 and the guide rail 1 and ensure the stability of the movement of the fall arrestor body 21. A cleaning component 24 is provided on the side of the second traveling wheel 26 away from the first traveling wheel 25. During the process of the fall arrestor 2 traveling along the guide rail 1, the second traveling wheel 26 is in front of the first traveling wheel 25. The cleaning component 24 on the side away from the first traveling wheel 25 will preferentially contact the surface of the guide rail 1. The cleaning component 24 can achieve pre-cleaning of the travel path of the guide rail 1, ensuring that there are no impurities blocking the subsequent rolling area of ​​the first traveling wheel 25 and the internal braking unit of the fall arrestor body 21, the contact area between the pull arm 23 and the guide rail 1, and avoid the pull arm 23 slipping or not locking tightly when it is pressed against the guide rail 1.

[0020] like Figures 3-7 As shown, the braking unit includes a transmission assembly and a brake block 27. A first cavity 211 is provided at one end of the second cavity 212 near the guide rail 1. The brake block 27 is movably installed in the first cavity 211 via a first compression spring. The transmission assembly is located in the second cavity 212. The brake block 27 is connected to the first rotating shaft via the transmission assembly. Under normal conditions, the first compression spring is in a relaxed state, and a certain gap is maintained between the brake block 27 and the guide rail 1. When a slip occurs, the pull arm 23 drives the first rotating shaft to rotate in the opposite direction. At this time, under the action of the transmission assembly, the brake blocks 27 in the two braking units will overcome the elastic force of the first compression spring and move closer to the guide rail 1, and finally make close contact with the side of the guide rail 1. The brake blocks 27 in the two braking units achieve the function of lateral locking to ensure the reliability of the fall protection device.

[0021] like Figures 5-7As shown, the transmission assembly includes a fixed sleeve 2121, a first transmission rod 2122, and a transmission block 28. The fixed sleeve 2121 is mounted on the first rotating shaft. One end of the first transmission rod 2122 is connected to the fixed sleeve 2121 via a connecting rope, and the other end of the first transmission rod 2122 is connected to the transmission block 28 via a composite hinge. The contact ends of the brake block 27 and the transmission block 28 are both wedge-shaped structures. In this invention, the fixed sleeve 2121 rotates synchronously with the first rotating shaft. When the pull arm 23 slips and causes the first rotating shaft to rotate in the opposite direction, the fixed sleeve 2121 rotates accordingly and pulls the first transmission rod 2122 via the connecting rope, so that the end of the first transmission rod 2122 near the transmission block 28 moves towards the first cavity 211. Through the transmission action of the composite hinge, the first transmission rod 2122... The transmission block 28 is pushed closer to the brake block 27. Since the contact ends of the brake block 27 and the transmission block 28 are both wedge-shaped, the movement of the transmission block 28 will generate a lateral thrust on the brake block 27, forcing the brake block 27 to overcome the elastic force of the first compression spring and move towards the guide rail 1 until the brake block 27 is tightly abutted against the side of the guide rail 1, thus achieving lateral locking.

[0022] like Figure 7 As shown, the monitoring module includes a piezoelectric alarm element, which is located at the end of the brake block 27 near the first compression spring. The piezoelectric alarm element sends a signal to the ground monitoring terminal via a wireless transmitter. When the brake block 27 moves towards the guide rail 1 due to slippage, it compresses the first compression spring and squeezes the piezoelectric alarm element. The piezoelectric alarm element generates an electrical signal under pressure, which is then transmitted to the ground monitoring terminal in real time via the wireless transmitter. This allows ground personnel to be aware that the fall arrestor 2 has entered the locked state and to communicate with the high-altitude workers in a timely manner. Based on the communication results, appropriate emergency measures can be taken. When the danger is eliminated and the brake block 27 resets under the action of the first compression spring, the squeezing force on the piezoelectric alarm element gradually disappears, and the electrical signal weakens until it disappears. The ground monitoring terminal automatically deactivates the alarm and resumes monitoring the normal operation of the fall arrestor.

[0023] like Figure 5As shown, the first transmission rod 2122 is connected to the fall arrestor body 21 via a second rotating shaft. The second rotating shaft is located at the end of the first transmission rod 2122 near the composite hinge. The first transmission rod 2122 is rotatably mounted in the second cavity 212 via the second rotating shaft, forming a lever fulcrum. When the fixed sleeve 2121 pulls the connecting rope, the end of the first transmission rod 2122 away from the composite hinge is subjected to tension and rotates around the second rotating shaft towards the fixed sleeve 2121, while the end near the composite hinge swings towards the transmission block 28. The composite hinge then pushes the transmission block 28 towards the brake block 27. This technical solution makes the force on the first transmission rod 2122 more reasonable, efficiently converting the tension of the connecting rope into a thrust on the transmission block 28, thus enhancing transmission efficiency. At the same time, the second rotating shaft constrains the rotation trajectory of the first transmission rod 2122, ensuring that it always moves along a preset path during movement, avoiding transmission failure due to deviation, and further improving the stability of the braking unit response.

[0024] like Figures 2-5 , Figure 8 As shown, the fall arrestor 21 has two third cavities 213 at one end near the second traveling wheel 26. The two third cavities 213 are located on both sides of the second traveling wheel 26. Each third cavity 213 is equipped with a reciprocating vibration component. The cleaning component 24 is connected to the second traveling wheel 26 through the two reciprocating vibration components. When the second traveling wheel 26 moves along the guide rail 1, it drives the two reciprocating vibration components to move synchronously. The two reciprocating vibration components drive the cleaning component 24 to vibrate while moving with the fall arrestor 21. Under the action of vibration, the cleaning effect of the cleaning component 24 on the surface of the guide rail 1 is improved, ensuring that there is no foreign object interference when the subsequent pull arm 23 contacts the guide rail 1, and ensuring the reliable realization of the locking function.

[0025] like Figures 2-5 , Figure 8As shown, a support block is also provided in the third cavity 213. The reciprocating vibration assembly includes a cam 2131 and a second transmission rod 2132. The cam 2131 is connected to the second traveling wheel 26 through a third rotating shaft. One end of the second transmission rod 2132 is connected to the cleaning component 24 through a connecting frame 241, and the other end of the second transmission rod 2132 is inserted into the support block. A second compression spring is wound on the second transmission rod 2132. The second compression spring is located between the connecting frame 241 and the support block. When the second traveling wheel 26 moves along the guide rail 1, the cam 2131 will rotate synchronously under the action of the third rotating shaft, and its protruding part will periodically abut against the guide rail. Pushing the second transmission rod 2132 forces it to move away from the cam 2131. Since the second transmission rod 2132 is connected to the cleaning component 24 through the connecting frame 241, the cleaning component 24 will move away from the second traveling wheel 26 in sync. At this time, the second compression spring is compressed by the connecting frame 241 and accumulates elastic potential energy. When the protruding part of the cam 2131 rotates past the contact position with the second transmission rod 2132, the second compression spring releases its elastic potential energy, pushing the second transmission rod 2132 and the cleaning component 24 to reset in the opposite direction. Through the above technical solution, the second transmission rod 2132, driven by the cam 2131 and reset by the second compression spring, will drive the cleaning component 24 to move along the guide rail 1 with the anti-fall body 21. At the same time, through its own vibration, it will enhance the contact force and friction frequency with the surface of the guide rail 1, and more effectively peel off foreign objects attached to the surface of the guide rail 1, providing a guarantee for the reliable contact between the pull arm 23 and the guide rail 1 and the stable realization of the locking function.

[0026] like Figures 1-2 As shown, lateral guide wheels 22 are provided on both the front and rear sides of the fall arrestor body 21. The axis of each lateral guide wheel 22 is perpendicular to the guide rail 1. The lateral guide wheels 22 restrict the lateral displacement of the fall arrestor body 21 and ensure the stability of the fall arrestor body 21 as it moves on the guide rail 1.

[0027] The working principle of this invention: When climbing, workers at height must first connect the safety rope to the locking hole on the pull arm 23. During normal movement, the pull arm 23 and the guide rail 1 are not in a tight-fitting state. The first traveling wheel 25 and the second traveling wheel 26 move synchronously along the extension direction of the guide rail 1 with the fall arrestor body 21. During the movement of the second traveling wheel 26 along the guide rail 1, the second traveling wheel 26 will drive two reciprocating vibration components to move synchronously. The two reciprocating vibration components drive the cleaning component 24 to vibrate itself while moving with the fall arrestor body 21. The cleaning component 24 cleans the surface of the guide rail 1 to ensure that there are no foreign objects interfering when the pull arm 23 comes into contact with the guide rail 1. In the event of a fall, the safety rope will pull the pull arm 23 in the opposite direction due to the worker's own weight. At this time, the pull arm 23 will press against the front of the guide rail 1 and drive the two braking units to work. The guide rail 1 is locked laterally by the two braking units. The double self-locking purpose is achieved by the forward pressing of the pull arm 23 and the lateral locking of the two braking units, which greatly improves the reliability and safety of the fall arrestor. The invention is equipped with a monitoring module in each braking unit. The monitoring module monitors the opening and closing status of the fall arrestor 2 so that people on the ground nearby can know the safety status of the workers at height in a timely manner and respond to emergencies.

[0028] Finally, it should be noted that the above descriptions are merely preferred embodiments of the present invention and are not intended to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A self-locking fall arrestor with monitoring function, comprising a guide rail (1), a fall arrestor (2), and connecting fittings (3), wherein the guide rail (1) is fixedly installed on a tower via a plurality of connecting fittings (3), and the fall arrestor (2) is slidably installed on the guide rail (1), characterized in that: The fall arrestor (2) includes a fall arrestor body (21) and a pull arm (23). The fall arrestor body (21) has a movable cavity. One end of the pull arm (23) is located in the movable cavity and is connected to the fall arrestor body (21) through a first rotating shaft. The other end of the pull arm (23) has a locking hole and extends out of the fall arrestor body (21). The fall arrestor body (21) also has two second cavities (212). The two second cavities (212) are arranged opposite each other on both sides of the movable cavity. Each second cavity (212) has a braking unit. Each braking unit is connected to the first rotating shaft. The double self-locking function is achieved through the cooperation of the pull arm (23) and the two braking units. Each braking unit has a monitoring module. The opening and closing status of the fall arrestor (2) is monitored through the monitoring module.

2. The self-locking fall arrestor with monitoring function according to claim 1, characterized in that: The fall arrestor body (21) is provided with a first traveling wheel (25) and a second traveling wheel (26) at both ends along the extension direction of the guide rail (1). A cleaning component (24) is provided on the side of the second traveling wheel (26) away from the first traveling wheel (25). During the process of the fall arrestor (2) traveling along the prescribed path of the guide rail (1), the second traveling wheel (26) is positioned in front of the first traveling wheel (25).

3. A self-locking fall arrestor with monitoring function according to claim 1, characterized in that: The braking unit includes a transmission assembly and a brake block (27). The second cavity (212) is provided with a first cavity (211) at one end near the guide rail (1). The brake block (27) is movably installed in the first cavity (211) by a first compression spring. The transmission assembly is provided in the second cavity (212). The brake block (27) is connected to the first rotating shaft through the transmission assembly.

4. A self-locking fall arrestor with monitoring function according to claim 3, characterized in that: The transmission assembly includes a fixed sleeve (2121), a first transmission rod (2122), and a transmission block (28). The fixed sleeve (2121) is mounted on a first rotating shaft. One end of the first transmission rod (2122) is connected to the fixed sleeve (2121) via a connecting rope. The other end of the first transmission rod (2122) is connected to the transmission block (28) via a composite hinge. The brake block (27) and the transmission block (28) are both wedge-shaped at their contacting ends.

5. A self-locking fall arrestor with monitoring function according to claim 3, characterized in that: The monitoring module includes a piezoelectric alarm element, which is located at one end of the brake block (27) near the first compression spring.

6. A self-locking fall arrestor with monitoring function according to claim 4, characterized in that: The first transmission rod (2122) is connected to the fall arrestor body (21) via a second rotating shaft, which is located at the end of the first transmission rod (2122) near the composite hinge.

7. A self-locking fall arrestor with monitoring function according to claim 2, characterized in that: The fall arrestor body (21) has two third cavities (213) at one end near the second traveling wheel (26). The two third cavities (213) are located on both sides of the second traveling wheel (26). Each third cavity (213) is equipped with a reciprocating vibration component. The cleaning component (24) is connected to the second traveling wheel (26) through the two reciprocating vibration components.

8. A self-locking fall arrestor with monitoring function according to claim 7, characterized in that: The third cavity (213) is also provided with a support block. The reciprocating vibration assembly includes a cam (2131) and a second transmission rod (2132). The cam (2131) is connected to the second traveling wheel (26) through a third rotating shaft. One end of the second transmission rod (2132) is connected to the cleaning component (24) through a connecting frame (241). The other end of the second transmission rod (2132) is inserted into the support block. A second compression spring is wound on the second transmission rod (2132). The second compression spring is located between the connecting frame (241) and the support block.

9. A self-locking fall arrestor with monitoring function according to claim 1, characterized in that: The front and rear sides of the fall arrestor body (21) are provided with side guide wheels (22), and the axis of each side guide wheel (22) is perpendicular to the guide rail (1).

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