Fall protection device

Abstract

This invention provides a fall arrest device. The fall arrest device includes a winch, a ground locking device, and a safety rope. The ground locking device includes a locking body and a drum assembly, the drum assembly being rotatably mounted relative to the locking body. One end of the safety rope is connected to the winch, and the other end forms a suspension connection end, with a portion of the safety rope wound around the surface of the drum assembly. The locking body has a locked position and an unlocked position. When the locking body is in the locked position, it locks the safety rope to the current position of the drum assembly, and the locking body is fixedly connected to the drum assembly. This solution solves the problem in existing fall arrest devices where the safety rope tensioning operation relies on manual operation, resulting in delayed response and reduced safety and efficiency.

Description

Technical Field

[0001] This invention relates to the field of power safety equipment technology, and more specifically, to a fall protection device. Background Technology

[0002] Fall arrestors are critical equipment used to protect workers from falls while working at heights. The tensioning of the safety rope is a crucial step in ensuring the effectiveness of the device. Currently, most fall arrestors rely on manual tensioning of the safety rope, resulting in high labor costs. The tensioning process involves adjusting and tightening the safety rope to reduce the distance and impact force of a fall in the event of an accident. However, because each worker's weight, working environment, and other factors vary, the tension of the safety rope needs to be adjusted according to specific circumstances, requiring operation by qualified technicians.

[0003] Secondly, the tensioning process of the safety rope requires professional technical skills and experience. A rope that is too loose or too tight will affect the effectiveness of the device. If it is too loose, it may not be able to stop a worker in time if they fall; if it is too tight, it may increase the inconvenience and danger for workers operating at heights. Therefore, experienced technicians need to manually judge the tension of the safety rope and make corresponding adjustments, which places high demands on the operator's technical ability and experience.

[0004] In existing technologies, when personnel or materials fall, if operators do not react in time, it can easily lead to safety accidents such as injuries or fatalities. Furthermore, most existing devices lack sufficient automation, intelligent control, and real-time monitoring capabilities, making them unable to respond promptly to changes in the external environment, thus reducing operational safety and efficiency.

[0005] There is currently no effective solution to the above problems. Summary of the Invention

[0006] The main objective of this invention is to provide a fall arrest device that solves the problem that the tensioning operation of the safety rope in existing fall arrest devices relies on manual operation, which cannot respond in a timely manner and reduces safety and efficiency.

[0007] To achieve the above objectives, according to one aspect of the present invention, a fall arrest device is provided, comprising: a winch; a ground locking device including a locking body and a drum assembly, the drum assembly being rotatably disposed relative to the locking body; a safety rope, one end of which is connected to the winch, the other end of which forms a suspension connection end, and a portion of which is wound around the surface of the drum assembly; wherein the locking body has a locking position for locking the safety rope and an unlocking position for unlocking the safety rope, and when the locking body is in the locking position, the locking body locks the safety rope at the current position of the drum assembly, and the locking body is fixedly connected to the drum assembly.

[0008] Furthermore, the locking body includes: a housing, which is rotatably connected to the roller assembly; a locking structure, which is connected to the housing and is movably disposed relative to the housing, the locking structure having a first position where it is moved to be connected to the roller assembly, and when the locking structure is in the first position, the locking body is in a locked position; and a driving member, which is connected to the locking structure and is used to drive the locking structure to move relative to the housing.

[0009] Furthermore, the fall arrestor also includes: a detection device used to detect the tension value at a target point on the safety rope;

[0010] The controller is electrically connected to the winch and the drive unit. The controller is used to control the speed of the winch according to the tension value detected by the detection device, and / or the controller is used to control the working state of the drive unit according to the tension value detected by the detection device, so that the locking body is in the locked position and the unlocked position.

[0011] Furthermore, the housing has two opposing sidewalls, and the roller assembly includes: a roller, the two axial ends of which are respectively connected to the two sidewalls, and the roller is rotatably disposed relative to the housing; and a gear disposed on the roller.

[0012] Furthermore, a groove is provided on the annular surface between the two ends of the roller, and the safety rope is located in the groove.

[0013] Furthermore, the locking structure includes a gear brake, which has meshing teeth on the side facing the gear. When the locking structure is in the first position, the gear brake is engaged with the gear.

[0014] Furthermore, the locking structure also includes a curved braking part, on the side of the curved braking part facing the roller, a curved braking material is provided, and when the locking structure is in the first position, the curved braking material contacts the safety rope to generate friction.

[0015] Furthermore, the fall arrestor also includes a rope self-locking device, in which the safety rope is threaded. The controller is electrically connected to the rope self-locking device and is used to control the rope self-locking device to enter the self-locking state based on the tension value detected by the detection device.

[0016] Furthermore, the fall arrestor also includes a fixed hook, which is connected to the rope self-locking device by a cable.

[0017] Furthermore, the detection device is a tension sensor.

[0018] By applying the technical solution of this invention, the tension of the safety rope is automatically adjusted by a winch, and in conjunction with the locking body and drum assembly in the ground locking device, a stable locking of the safety rope is achieved. When the locking body is in the locked position, it not only fixes the position of the safety rope on the drum assembly but also forms a rigid connection with the drum assembly, ensuring that the safety rope remains taut even under sudden external forces, effectively preventing workers from falling from heights and significantly improving operational safety and reliability. This solution solves the problem in existing technologies where the tensioning operation of the safety rope in fall arrest devices relies on manual intervention, resulting in delayed responses and reduced safety and efficiency. Attached Figure Description

[0019] The accompanying drawings, which form part of this application, are used to provide a further understanding of the invention. The illustrative embodiments of the invention and their descriptions are used to explain the invention and do not constitute an undue limitation of the invention. In the drawings:

[0020] Figure 1 A schematic diagram of the structure of a first embodiment of the fall protection device according to the present invention is shown;

[0021] Figure 2 A schematic diagram of a second embodiment of the fall arrest device according to the present invention is shown;

[0022] Figure 3 A schematic diagram of a third embodiment of the fall arrest device according to the present invention is shown.

[0023] The above figures include the following reference numerals:

[0024] 26. Winch;

[0025] 27. Safety rope;

[0026] 28. Rope self-locking device;

[0027] 31. Fixed hooks;

[0028] 35. Gear;

[0029] 36. Roller;

[0030] 37. Shell;

[0031] 38. Curved surface braking unit;

[0032] 39. Driving components;

[0033] 40. Gear braking unit;

[0034] 100. Ground locking device;

[0035] 101. Roller assembly. Detailed Implementation

[0036] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other. The present invention will now be described in detail with reference to the accompanying drawings and embodiments.

[0037] It should be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the exemplary embodiments according to this application. As used herein, the singular form is intended to include the plural form as well, unless the context clearly indicates otherwise. Furthermore, it should be understood that when the terms "comprising" and / or "including" are used in this specification, they indicate the presence of features, steps, operations, devices, components, and / or combinations thereof.

[0038] It should be noted that the terms "first," "second," etc., in the specification, claims, and accompanying drawings of this application are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such terms can be used interchangeably where appropriate so that the embodiments of this application described herein can be implemented, for example, in orders other than those illustrated or described herein. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover a non-exclusive inclusion; for example, a process, method, system, product, or apparatus that comprises a series of steps or units is not necessarily limited to those steps or units explicitly listed, but may include other steps or units not explicitly listed or inherent to such processes, methods, products, or apparatus.

[0039] Exemplary embodiments according to this application will now be described in more detail with reference to the accompanying drawings. However, these exemplary embodiments may be implemented in many different forms and should not be construed as being limited to the embodiments set forth herein. It should be understood that these embodiments are provided so that the disclosure of this application is thorough and complete, and that the concept of these exemplary embodiments is fully conveyed to those skilled in the art. In the drawings, for clarity, the thickness of layers and regions may be exaggerated, and the same reference numerals are used to denote the same devices, and therefore their description will be omitted.

[0040] Combination Figures 1 to 3 As shown, according to a specific embodiment of this application, a fall protection device is provided.

[0041] Specifically, the fall arrestor includes a winch 26, a ground locking device 100, and a safety rope 27. The ground locking device 100 includes a locking body and a roller assembly 101, which is rotatably disposed relative to the locking body; one end of the safety rope 27 is connected to the winch 26, the other end of the safety rope 27 forms a suspension connection end, and a portion of the safety rope 27 is wound around the surface of the roller assembly 101.

[0042] The locking body has a locking position for locking the safety rope 27 and an unlocking position for unlocking the safety rope 27. When the locking body is in the locking position, the locking body locks the safety rope 27 to the current position of the roller assembly 101, and the locking body is fixedly connected to the roller assembly 101.

[0043] By applying the technical solution of this invention, the tension of the safety rope 27 is automatically adjusted by the winch 26, and in conjunction with the locking body and drum assembly 101 in the ground locking device 100, the safety rope 27 is securely locked. When the locking body is in the locked position, it not only fixes the position of the safety rope 27 on the drum assembly 101, but also forms a rigid connection with the drum assembly 101, ensuring that the safety rope 27 remains taut even under sudden external forces, effectively preventing workers from falling from heights and significantly improving operational safety and reliability. This solution solves the problem in existing technologies where the tensioning operation of the safety rope 27 in fall arrest devices relies on manual intervention, resulting in delayed responses and reduced safety and efficiency.

[0044] Furthermore, the locking body includes: a housing 37, a locking structure, and a driving component 39.

[0045] The housing 37 is rotatably connected to the roller assembly 101;

[0046] The locking structure is connected to the housing 37 and is movably disposed relative to the housing 37. The locking structure has a first position where it is moved to connect with the roller assembly 101. When the locking structure is in the first position, the locking body is in the locking position.

[0047] The driving component 39 is connected to the locking structure and is used to drive the locking structure to move relative to the housing 37. The design of the locking structure allows the locking body to respond quickly, achieving immediate locking of the safety rope 27, improving the response speed and locking efficiency of the device, and making it particularly suitable for emergency braking in sudden situations. For example, during the maintenance of power transmission towers or high-altitude wind power facilities, if a sudden strong wind occurs, the device can quickly lock to ensure the safety of the workers.

[0048] like Figure 2 As shown, the housing 37 acts as both a support and a protective shield. The housing 37 is rotatably connected to the drum assembly 101 via bearings or other rotating connection mechanisms. This ensures that the drum assembly 101 can rotate freely under the action of the winch 26, thereby adjusting the tension of the safety rope 27. The housing 37 is typically made of robust materials, such as metal alloys, to provide sufficient structural strength and protection, shielding the internal components from damage by the external environment.

[0049] The drive unit 39 can be configured as a motor or pneumatic pump, connected to the locking structure via a gear mechanism to achieve precise control over its position. During operation, when the winch 26 adjusts the tension of the safety rope 27 electrically, the drive unit 39 automatically drives the locking structure to move relative to the housing 37 to the first position according to the control signal, thus locking the safety rope 27. In an emergency, the drive unit 39 can respond quickly to ensure the locking structure is immediately in place, preventing the safety rope 27 from accidentally loosening.

[0050] Furthermore, the fall arrestor also includes a detection device and a controller. The detection device is used to detect the tension value at the target point on the safety rope 27; the controller is electrically connected to the winch 26 and the drive unit 39, and is used to control the rotational speed of the winch 26 based on the tension value detected by the detection device, and / or, the controller is used to control the working state of the drive unit 39 based on the tension value detected by the detection device, so that the locking body is in the locked position and the unlocked position. This intelligent control method can monitor the tension changes on the safety rope 27 in real time, automatically adjust the rotational speed of the winch 26 and the working state of the locking body, and ensure timely and effective protection under any circumstances.

[0051] The controller is the "brain" of the entire device. It is electrically connected to the winch 26 and the drive unit 39, and can intelligently adjust the speed of the winch 26 based on the tension value provided by the detection device, thereby controlling the tension of the safety rope 27. Furthermore, the controller can also control the working state of the drive unit 39 based on changes in the tension value, i.e., determining whether the locking body moves to the locked or unlocked position. The controller integrates a microprocessor, memory, and signal processing circuitry, enabling it to quickly analyze sensor data and implement precise control strategies to ensure the safety and stability of the safety rope 27 under various working conditions. For example, when a worker begins climbing or moves at a height, the detection device monitors the tension changes on the safety rope 27 in real time. If the tension value is lower than the preset minimum tension threshold, the controller immediately adjusts the speed of the winch 26 to increase the tension of the safety rope, ensuring it can effectively support the worker. At the same time, the controller will determine whether to activate the locking operation based on the tension value. If a sudden external force or load change causes the tension value to increase sharply, the controller will quickly control the drive component 39 to move the locking body to the locking position and fix the safety rope to the current point on the roller assembly 101, thereby preventing the safety rope from slack or breakage and protecting the workers from the risk of falling.

[0052] Optionally, the detection device is located at a critical point on the safety rope 27, typically at the point where the safety rope 27 contacts the roller assembly 101, or near the suspension point of the safety rope 27, to ensure accurate detection of changes in the tension of the safety rope 27. The controller is typically housed inside the housing 37 to facilitate signal transmission and device maintenance.

[0053] In one specific embodiment, the controller's control function is a crucial element in ensuring the automatic tensioning of the safety rope 27. When the operator presses the start button, the controller sends a signal to start the winch 26, which in turn moves the safety rope 27. During the tensioning process, the controller monitors the tension status of the safety rope 27 in real time, ensuring that the safety rope 27 maintains optimal tension through feedback from the detection device, and automatically adjusts the operating speed of the winch 26 as needed.

[0054] The specific operating procedure is as follows:

[0055] Start-up process: Before commencing work at height, the operator must first ensure all connections are secure and then press the start button on the controller. The controller will then use a detection device to confirm the status of the winch 26 and safety rope 27.

[0056] Tension Monitoring: Once the winch 26 starts, the controller begins monitoring the tension of the safety rope 27. The system collects data from the detection device in real time to determine whether the state of the safety rope 27 is within the preset safety range. If insufficient tension is detected, the controller will automatically adjust the speed of the winch 26 to replenish the tension in a timely manner.

[0057] Stopping process: After the operation is completed, the operator can safely stop the winch 26 by pressing the stop button on the controller, ensuring that the safety rope 27 is in a stable state.

[0058] Optionally, the base of the fall arrestor is designed with a pedestal for securing the winch 26. This pedestal is typically made of a high-strength material, such as steel or aluminum alloy, to ensure sufficient load-bearing capacity and stability. The shape and size of the pedestal match the bottom of the winch 26, forming a stable support surface. The winch 26 is connected and secured to the mounting base by bolts, screws, or other fasteners, ensuring a reliable and secure connection and preventing loosening or movement of the winch 26 during operation.

[0059] like Figure 1 As shown, the winch 26 and the ground locking device 100 are positioned opposite each other, with a certain distance between them to ensure the transmission of the safety rope 27 between them.

[0060] It should be further noted that in this embodiment, the winch 26 can be an electric winch or other types of automatic tensioning devices, such as a pneumatic winch or a hydraulic winch.

[0061] Specifically, the housing 37 has two opposing sidewalls, and the roller assembly 101 includes a roller 36 and a gear 35. The axial ends of the roller 36 are respectively connected to the two sidewalls, and the roller 36 is rotatably mounted relative to the housing 37. The gear 35 is mounted on the roller 36. Through the cooperation between the gear 35 and the roller 36, not only is the rotational efficiency of the roller assembly 101 improved, but a precise locking point is also provided for the locking structure, making the locking operation more accurate and reliable.

[0062] The housing 37 is the protective outer shell and structural frame of the entire fall arrestor. It has two opposing sidewalls that provide stable support and protection for the internal components. The design of the two opposing sidewalls ensures that the roller 36 can be fixed at both ends in its axial direction, while leaving enough space for the roller 36 to rotate freely relative to the housing 37.

[0063] The surface of the roller 36 is typically designed with rope grooves or winding structures for the winding and movement of the safety rope 27. The rotation of the roller 36 is achieved by gears 35 connected to it. In this embodiment, there are two gears 35, which are arranged opposite each other and fixed to both ends of the roller 36 by means of keys, splines, or interference fits to ensure that power can be transmitted smoothly and efficiently.

[0064] Specifically, a groove is provided on the annular surface between the two ends of the roller 36, and the safety rope 27 is located in the groove. The groove design can effectively prevent the safety rope from shifting when it slides on the roller, ensuring the stability and reliability of the safety rope 27 and reducing the accidents that may be caused by the safety rope 27 not sliding smoothly.

[0065] Furthermore, the locking structure includes a gear brake 40, which has meshing teeth on the side facing the gear 35. When the locking structure is in the first position, the gear brake 40 is engaged with the gear 35. This meshing design between the gear brake 40 and the gear 35 allows the locking structure to respond quickly and lock the roller assembly, greatly improving locking efficiency and reliability. In emergencies, such as sudden falls from heights, this design can respond quickly and immediately lock the safety rope 27, providing immediate protection for the workers.

[0066] The gear brake 40 is a key component of the locking structure in this invention. It is designed to mesh with the gear 35 to restrict the rotation of the roller 36 and achieve the locking function of the safety rope 27.

[0067] The gear brake 40 has meshing teeth on the side facing the gear 35 that match the tooth profile of the gear 35. This design allows the gear brake 40 to precisely mesh with the gear 35 when the locking structure moves to the first position, preventing its rotation. The gear brake 40 is typically made of high-strength, wear-resistant material to ensure structural integrity and effective function even under heavy loads.

[0068] When the locking structure is in the unlocked state, the meshing teeth of the gear brake part 40 remain separated from the gear 35, allowing the roller 36 to rotate freely according to the drive of the winch 26, thereby tensioning or releasing the safety rope 27.

[0069] When the controller determines that the safety rope 27 needs to be locked based on the tension value provided by the detection device, the drive unit 39 drives the locking structure to move to the first position, so that the meshing teeth of the gear brake part 40 contact the gear 35 and form a mesh, thereby restricting the rotation of the roller 36, maintaining the tension of the safety rope, and preventing the occurrence of a fall accident.

[0070] Furthermore, the locking structure also includes a curved braking part 38, on the side of the curved braking part 38 facing the roller 36, with a curved braking material. When the locking structure is in the first position, the curved braking material contacts the safety rope 27 to generate friction. The use of the curved braking material not only increases the friction between the locking structure and the safety rope 27, ensuring the stability of the locking, but also reduces wear on the safety rope 27, extending the service life of the safety rope.

[0071] like Figure 3 As shown, the curved braking part 38 can be an annular curved surface structure, with its inner diameter matching the outer diameter of the roller 36 to ensure the fit between the two during contact. The curved braking material is firmly bonded or riveted to the inner surface of the curved braking part 38 to form a continuous friction contact surface.

[0072] When the locking structure is driven to the first position, the curved braking part 38 on the side facing the roller 36 directly contacts the safety rope 27. The resulting friction can immediately stop the movement of the safety rope 27, ensuring that the safety rope 27 will not slacken in any accidental situation, thus protecting the safety of the workers.

[0073] Optionally, the curved braking material is typically made of materials with a high coefficient of friction, high temperature resistance, and wear resistance, such as carbon fiber composites, ceramic matrix composites, or metal matrix composites. These materials maintain good physical properties under high loads and friction, ensuring that sufficient frictional force can be generated immediately to stop the movement of the safety rope 27 during emergency locking, without causing excessive wear to the safety rope 27.

[0074] In this fall arrestor system, the curved surface braking unit 38 and the gear braking unit 40 achieve double-safety ground locking through a mutually independent yet synergistic action, ensuring that the safety rope 27 remains stable under any circumstances and preventing falls caused by accidents or equipment malfunctions.

[0075] During any locking operation, when the detection device detects that the tension on the safety rope 27 exceeds a preset safety threshold, the controller immediately activates the locking structure, simultaneously moving the curved braking part 38 and the gear braking part 40 to the first position. At this time, the curved braking material contacts the safety rope 27, generating friction and initially preventing the movement of the safety rope. Simultaneously, the meshing teeth of the gear braking part 40 engage tightly with the gear 35, further securing the roller 36 and ensuring that the safety rope 27 will not move or slacken unexpectedly under any circumstances.

[0076] This dual-safety locking mechanism not only improves the locking efficiency of the safety rope 27, but also enhances the reliability of the locking structure. Even if a single locking component fails, the other component can independently complete the locking task, providing maximum safety for the workers.

[0077] Furthermore, the fall arrest device also includes a rope self-locking device 28, in which a safety rope 27 is threaded. A controller is electrically connected to the rope self-locking device 28 and is used to control the rope self-locking device 28 to enter the self-locking state based on the tension value detected by the detection device.

[0078] The self-locking device 28 provides double protection for the safety rope. Even if the ground locking device 100 fails to respond in time due to environmental factors, the self-locking device 28 can immediately lock the safety rope 27 to prevent personnel from falling. This double protection design can better cope with emergencies and ensure the safety of workers.

[0079] The rope-threading self-locking device 28 is typically designed as a device that can automatically sense and respond to changes in the tension of the safety rope, and it contains a self-locking mechanism. Under normal circumstances, the self-locking mechanism allows the safety rope 27 to be threaded freely, but when the tension value detected by the detection device exceeds a preset safety threshold, the controller can promptly control the rope-threading self-locking device 28 to immediately activate the self-locking mechanism to prevent further movement of the safety rope 27.

[0080] In an optional embodiment, the rope self-locking device 28 can be designed as a device with an internal spring locking mechanism, electrically connected to its controller. When the worker is moving normally, the rope self-locking device 28 is in the unlocked state, allowing the safety rope 27 to move smoothly without affecting the worker's freedom of movement. Once the detection device detects a sudden increase in the tension on the safety rope 27, exceeding a preset safety threshold, the controller immediately sends a self-locking command to the rope self-locking device 28. Upon receiving the command, the internal spring mechanism of the rope self-locking device 28 quickly activates, preventing any further movement of the safety rope 27 through friction or mechanical locking, thereby locking the worker in their current position and avoiding the risk of a fall.

[0081] Furthermore, the fall arrestor also includes a fixing hook 31, which is connected to the rope self-locking device 28 via a cable. The fixing hook 31 ensures that the fall arrestor is securely fixed to the work platform, preventing the device from moving during operation and further improving work safety.

[0082] The fixed hook 31 can be a U-shaped or J-shaped metal hook fixed to the base of the fall arrestor or a stable support structure. It is fixed to the base of the fall arrestor by bolts or welding, serving as the ground anchor point for the entire device and providing a stable fixing point for the rope self-locking device 28. The rope self-locking device 28 is a device with an internal locking mechanism. It is tightly connected to the safety rope through the rope threading mechanism and can automatically lock when a change in the tension of the safety rope 27 is detected.

[0083] The cable is used to connect the fixing hook 31 and the rope self-locking device 28, and its function is to transfer ground stability to the workers at height. The cable is made of high-strength, lightweight materials, such as stainless steel wire rope or aramid fiber rope, to ensure that it will not break when subjected to large tensile forces.

[0084] Specifically, the detection device is a tension sensor. The tension sensor is used to monitor the tension value at the target point on the safety rope 27 in real time. The tension sensor can accurately measure the force on the safety rope 27 and transmit the data to the controller, which then controls the speed of the winch 26 and the working state of the drive component 39 based on the tension value. Through an intelligent control strategy, the controller can ensure that the speed of the winch 26 matches the operational requirements. Simultaneously, when an abnormal tension value is detected, it quickly adjusts the working state of the drive component 39, placing the locking body in the locked position, thereby preventing workers from falling and improving the safety of high-altitude operations. Using a tension sensor as the detection device meets the requirements of fall arrest devices for accurate and real-time monitoring of safety rope tension, improving the device's response speed and safety, while also ensuring reliability and stability under various environmental conditions.

[0085] Optionally, the control algorithm in the controller is designed based on real-time tension monitoring and environmental parameter analysis. In addition to the tension value, the control algorithm also needs to consider the dynamic changes in the working environment, such as wind speed, the movement speed of the workers, and load changes. These environmental parameters can be collected by attached environmental sensors (such as anemometers and accelerometers) and input into the control algorithm.

[0086] Based on the collected tension values ​​and environmental parameters, the control algorithm calculates the optimal tension using a pre-set mathematical model. The model may include the physical properties of the safety rope, the worker's weight, and the influence coefficients of environmental parameters to ensure the accuracy of the calculation results.

[0087] Based on the calculation results, the algorithm generates a corresponding adjustment strategy. If the current tension is lower than the calculated value, the algorithm will issue a command to increase the output force of the winch 26 to improve the tension; conversely, it will reduce the output force to avoid over-tensioning.

[0088] The control algorithm is also designed with an emergency braking function. When an abnormally high tension value is detected (such as exceeding the safety threshold) or a sudden change in environmental parameters (such as extreme wind), the algorithm will immediately trigger the emergency braking mechanism, commanding the winch 26 and the rope self-locking device 28 to enter the locked state to prevent the safety rope 27 from slackening or breaking due to any unexpected situation.

[0089] Through the above control algorithm, the controller can automatically and intelligently adjust the tension of the safety rope 27, which not only improves the safety and efficiency of high-altitude operations, but also adapts to complex and ever-changing working environments, ensuring reliable safety for workers under various conditions. The design of this algorithm fully considers the various needs and challenges in actual operations.

[0090] As can be seen from the above description, the embodiments of the present invention achieve the following technical effects:

[0091] 1. By automatically adjusting the tension of the safety rope using a winch, and in conjunction with the locking body and roller assembly in the ground locking device, the safety rope is securely locked, effectively preventing workers from falling from heights and significantly improving operational safety and reliability. This solution addresses the problem in existing fall arrest devices where the tensioning of the safety rope relies on manual operation, resulting in delayed responses and reduced safety and efficiency.

[0092] 2. The curved surface braking unit and the gear braking unit in this fall arrest device design achieve double ground locking through an independent yet synergistic action, ensuring that the safety rope 27 remains stable under any circumstances and preventing falls caused by accidents or equipment failures.

[0093] 3. The detection device monitors the tension value of the safety rope in real time and transmits it to the controller. The controller realizes comprehensive intelligent management of the fall protection device, which not only improves the safety of high-altitude operations, but also optimizes the operation process, reduces the maintenance difficulty, and provides high-altitude workers with more stable, efficient and safe operation protection.

[0094] For ease of description, spatial relative terms such as "above," "on top of," "on the upper surface of," "above," etc., are used herein to describe the spatial positional relationship of a device or feature as shown in the figures to other devices or features. It should be understood that spatial relative terms are intended to encompass different orientations in use or operation beyond the orientation of the device as described in the figures. For example, if the device in the figures is inverted, a device described as "above" or "on top of" other devices or structures would subsequently be positioned as "below" or "under" other devices or structures. Thus, the exemplary term "above" can include both "above" and "below." The device may also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatial relative descriptions used herein will be interpreted accordingly.

[0095] In addition to the above, it should be noted that the terms "one embodiment," "another embodiment," and "embodiment" used in this specification refer to specific features, structures, or characteristics described in connection with that embodiment, which are included in at least one embodiment described in the general description of this application. The appearance of the same expression in multiple places in the specification does not necessarily refer to the same embodiment. Furthermore, when a specific feature, structure, or characteristic is described in connection with any embodiment, the intention is to suggest that implementing such a feature, structure, or characteristic in conjunction with other embodiments also falls within the scope of this invention.

[0096] In the above embodiments, the descriptions of each embodiment have different focuses. For parts not described in detail in a certain embodiment, please refer to the relevant descriptions in other embodiments.

[0097] The above description is merely a preferred embodiment of the present invention and is not intended to limit the invention. Various modifications and variations can be made to the present invention by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the scope of protection of the present invention.

Claims

1. A fall protection device, characterized in that, include: Winch (26); A ground locking device (100) includes a locking body and a roller assembly (101), the roller assembly (101) being rotatably disposed relative to the locking body; Safety rope (27), one end of which is connected to the winch (26), and the other end of which forms a suspension connection end, and part of the safety rope (27) is wound around the surface of the drum assembly (101); The locking body has a locking position for locking the safety rope (27) and an unlocking position for unlocking the safety rope (27). When the locking body is in the locking position, the locking body locks the safety rope (27) at the current position of the roller assembly (101), and the locking body is fixedly connected to the roller assembly (101). The locking body includes: A housing (37) is rotatably connected to the roller assembly (101); A locking structure is connected to the housing (37), the locking structure is movably disposed relative to the housing (37), the locking structure has a first position to be moved to be connected to the roller assembly (101), and when the locking structure is in the first position, the locking body is in the locking position; A drive member (39) is connected to the locking structure and is used to drive the locking structure to move relative to the housing (37). The fall protection device also includes: A detection device, which is used to detect the tension value at the target point on the safety rope (27); The controller is electrically connected to the winch (26) and the drive unit (39). The controller is used to control the rotation speed of the winch (26) according to the tension value detected by the detection device, and / or the controller is used to control the working state of the drive unit (39) according to the tension value detected by the detection device, so that the locking body is located in the locking position and the unlocking position. The housing (37) has two opposing sidewalls, and the roller assembly (101) includes: Roller (36), the two ends of the roller (36) are respectively connected to the two side walls, and the roller (36) is rotatably arranged relative to the housing (37); Gear (35), the gear (35) is disposed on the roller (36); The locking structure includes: The curved braking part (38) is provided with a curved braking material on the side facing the roller (36). When the locking structure is in the first position, the curved braking material contacts the safety rope (27) to generate friction.

2. The fall arrestor according to claim 1, characterized in that, A groove is provided on the annular surface between the two ends of the roller (36), and the safety rope (27) is located in the groove.

3. The fall arrestor according to claim 1, characterized in that, The locking structure further includes: The gear brake part (40) has meshing teeth on the side facing the gear (35). When the locking structure is in the first position, the gear brake part (40) meshes with the gear (35).

4. The fall arrestor according to claim 1, characterized in that, The fall arrestor also includes a rope self-locking device (28), in which the safety rope (27) is threaded. The controller is electrically connected to the rope self-locking device (28) and is used to control the rope self-locking device (28) to enter the self-locking state according to the tension value detected by the detection device.

5. The fall arrestor according to claim 4, characterized in that, The fall arrestor also includes a fixed hook (31), which is connected to the rope self-locking device (28) by a cable.

6. The fall arrestor according to claim 1, characterized in that, The detection device is a tensile sensor.

Images