Safety protection device and use method of safety protection device

Abstract

The invention provides a safety protection device and a use method of the safety protection device, and relates to the technical field of safety protection. The safety protection device comprises a cross rod, a plurality of suspension mechanisms, at least two supporting frames, mechanical arms and driving motors, and the number of the supporting frames, the number of the mechanical arms and the number of the driving motors are the same. The supporting frames are installed on different workshop bearing columns, each mechanical arm is hinged to one supporting frame and is in transmission connection with one driving motor, the transverse rod is fixedly connected with the free end of each mechanical arm, and the multiple suspension mechanisms are arranged on the transverse rod. By means of the technical means, the problem that in the prior art, a safety rope scheme of a fixed hanging point is difficult to achieve dynamic protection without a blind area in the whole process is solved.

Description

TECHNICAL FIELD

[0001] The present disclosure relates to the technical field of safety protection, in particular to a safety protection device and a method for using the safety protection device. BACKGROUND

[0002] When a locomotive is disassembled and assembled, a large number of operations are concentrated in the top cover area about 5 meters from the ground. According to the high-altitude operation safety specification, the operator must wear a safety belt and be reliably connected to an effective anchoring point throughout the operation. However, the traditional safety belt suspension point is usually arranged on the locomotive body structure. During the disassembly of the locomotive top cover, the hoisting of parts or the displacement of the structure, the original hanging point is often removed, blocked or in an unstable state, resulting in an "interval time" when the operator cannot hang the safety rope during movement or conversion of the work station. Once instability or falling occurs during this period, it will directly endanger personal safety. SUMMARY

[0003] The present disclosure provides a safety protection device and a method for using the safety protection device, thereby providing a safety protection device that is independent of the locomotive body, can be automatically deployed, has a wide coverage range and does not affect normal operation, to realize continuous and reliable protection of high-altitude operators.

[0004] According to one aspect of the present disclosure, a safety protection device is provided, comprising: a crossbar, a plurality of suspension mechanisms, and at least two support frames, mechanical arms and drive motors, wherein the number of support frames, mechanical arms and drive motors is the same; each support frame is installed on a different workshop load-bearing column, each mechanical arm is hingedly connected to a support frame, each mechanical arm is drivingly connected to a drive motor, the crossbar is fixedly connected to the free end of each mechanical arm, and the plurality of suspension mechanisms are arranged on the crossbar.

[0005] In one embodiment of the present disclosure, the suspension mechanism comprises a pulley mechanism, a safety rope and a fall arrest mechanism; the pulley mechanism is arranged on the crossbar and can slide on the crossbar; one end of the safety rope is fixed to the pulley mechanism, and the other end is connected to one end of the fall arrest mechanism; the other end of the fall arrest mechanism is provided with a connecting portion.

[0006] In one embodiment of the present disclosure, the connecting portion is used to connect the safety belt of the operator, and the fall arrest mechanism is used to automatically lock the safety rope when detecting that the falling speed of the safety rope exceeds a preset threshold.

[0007] In one embodiment of the present disclosure, the safety rope is a telescopic safety rope, comprising a rope body and a coil spring retraction mechanism, and the coil spring retraction mechanism is arranged inside the pulley assembly; the coil spring retraction mechanism is used to provide a constant pullback force to the rope body to achieve automatic winding.

[0008] In one embodiment of the present disclosure, the safety protection device further comprises a ground control system; the ground control system is communicatively connected with each driving motor; the ground control system is configured to control the rotation of the mechanical arm driven by each driving motor.

[0009] In one embodiment of the present disclosure, each support frame is mounted on a different workshop load-bearing column by a bolt structure.

[0010] In one embodiment of the present disclosure, the driving motor comprises a motor and a reducer, and the output shaft of the motor is connected with the rotating shaft of the mechanical arm through a gear pair.

[0011] In one embodiment of the present disclosure, a limiting block is arranged on the support frame, and the limiting block is configured to limit the rotation angle of the mechanical arm.

[0012] According to another aspect of the present disclosure, a method for using a safety protection device is provided, the safety protection device comprising a crossbar, a plurality of suspension mechanisms, and at least two support frames, mechanical arms, and driving motors, wherein the number of support frames, mechanical arms, and driving motors is the same; each support frame is mounted on a different workshop load-bearing column; each mechanical arm is hingedly connected with a support frame; each mechanical arm is drivingly connected with a driving motor; the crossbar is fixedly connected with the free end of each mechanical arm; and the plurality of suspension mechanisms are arranged on the crossbar; the method comprising: mounting each support frame on a different load-bearing column in the workshop; during operation, starting each driving motor to drive the corresponding mechanical arm to rotate around the hinged shaft of the support frame, so that the free end of each mechanical arm and the crossbar are rotated to a region above the top cover of the locomotive.

[0013] In one embodiment of the present disclosure, the suspension mechanism comprises a pulley mechanism, a safety rope, and an anti-falling mechanism; the pulley mechanism is arranged on the crossbar and can slide on the crossbar; one end of the safety rope is fixed to the pulley mechanism, and the other end is connected with one end of the anti-falling mechanism; the other end of the anti-falling mechanism is provided with a connecting portion; and the method comprises: during operation, starting each driving motor to drive the corresponding mechanical arm to rotate in the forward direction, so that the free end of each mechanical arm and the crossbar are unfolded from the initial position to the working position directly above the top cover of the locomotive; the work personnel connects the safety belt to the connecting portion of one suspension mechanism, and when the work personnel moves horizontally, the pulley mechanism of the suspension mechanism is driven to slide on the crossbar, and when the work personnel moves vertically, the safety rope of the suspension mechanism is automatically stretched and retracted; after the operation is completed, the work personnel disconnects the safety belt from the connecting portion, and starts each driving motor to drive the corresponding mechanical arm to rotate in the reverse direction, so that the free end of each mechanical arm and the crossbar are returned to the initial position.

[0014] In the embodiment of the present disclosure, each support frame is mounted on a different workshop load-bearing column, each mechanical arm is hingedly connected with a support frame, each mechanical arm is drivingly connected with a driving motor, the crossbar is fixedly connected with the free end of each mechanical arm, and the plurality of suspension mechanisms are arranged on the crossbar, so as to solve the problem that the safety rope scheme of the fixed hanging point in the related art is difficult to realize the full-process and blind-area-free dynamic protection, and further provide a safety protection device which is independent of the locomotive body, can be automatically deployed, has a wide coverage range and does not affect normal operation, so as to realize continuous and reliable protection of the high-altitude worker.

[0015] It should be understood that the foregoing general description and the following detailed description are only exemplary and explanatory, and are not limiting to the present disclosure. BRIEF DESCRIPTION OF DRAWINGS

[0016] The drawings incorporated in the specification and constituting a part of the specification illustrate embodiments consistent with the present disclosure and, together with the specification, serve to explain the principles of the present disclosure. Obviously, the drawings in the following description are only some embodiments of the present disclosure, and other drawings can be obtained by those skilled in the art without creative labor on the basis of these drawings.

[0017] Figure 1 A schematic diagram of a safety protection device in a workshop layout is shown.

[0018] Figure 2 A schematic diagram of a safety protection device is shown.

[0019] Figure 3 A schematic diagram of another safety protection device is shown.

[0020] Figure 4 A schematic diagram of a suspension mechanism is shown.

[0021] Figure 5 A schematic diagram of the relationship between a safety protection device and the movement range and direction of a worker is shown.

[0022] Figure 6 A schematic diagram of a safety protection device in a workshop is shown.

[0023] Figure 7 A schematic diagram of another safety protection device in a workshop is shown.

[0024] Figure 8 A flowchart of a method for using a safety protection device is shown. DETAILED DESCRIPTION

[0025] Example implementations will now be described more fully with reference to the accompanying drawings. Example implementations can be implemented in any

[0026] Moreover, the drawings are not necessarily to scale. Like reference numerals can be used to denote like parts throughout the specification. Some of the blocks in the drawings can be functional blocks that can implement the described processes via software or a combination of software and hardware, and a variety of conventional components such as a processor, multi-processor, micro-controller, digital signal processor (DSP), application specific integrated circuits (ASICs), programmable logic array (PLA), or field programmable gate array (FPGA) can be used to implement each block. For the sake of presentation, the detailed description can be in the form of a

[0027] It should be understood that various steps in the methods of the disclosure can be performed in a different order and / or concurrently with each other. Furthermore, various additional or alternative steps can be performed and / or steps can be omitted.

[0028] For clarity, the term “first”, “second”, and the like used in the description of the disclosure are used to differentiate one element from another, and are not used to limit the sequence or interdependence of the functions performed by these elements.

[0029] It should be noted that the terms “one”, “a”, and “multiple” used in the disclosure are illustrative and not limiting, and those skilled in the art should understand that “one” or “a” should be understood as “one or more” unless the context clearly indicates otherwise.

[0030] It should be noted that the embodiments of the disclosure and the technical features in the embodiments can be combined with each other without conflict.

[0031] Figure 1 A schematic diagram of a safety protection device in a workshop layout is shown in the embodiment of the disclosure, as shown in Figure 1 There are multiple workshop load-bearing columns inside the workshop, and the safety protection device is installed on the multiple workshop load-bearing columns. The safety protection device provides a hanging point for the safety belt of the worker, and the worker performs disassembly, assembly, and maintenance treatment on the locomotive at a high place in the workshop.

[0032] Figure 2 A schematic diagram of a safety protection device is shown in the embodiment of the disclosure, as shown in Figure 2 ​As shown, the safety protection device comprises a crossbar 203, a plurality of suspension mechanisms 205, and at least two support frames 201, mechanical arms 202, and drive motors 204, wherein the number of support frames 201, mechanical arms 202, and drive motors 204 is the same; each support frame 201 is installed on a different workshop load-bearing column, each mechanical arm 202 is hingedly connected to a support frame 201, each mechanical arm 202 is drivingly connected to a drive motor 204, the crossbar 203 is fixedly connected to the free end of each mechanical arm 202, and the plurality of suspension mechanisms 205 are arranged on the crossbar 203.

[0033] In this embodiment, the support frame 201 is fixed to the workshop load-bearing column as the stationary base of the entire safety protection device; the mechanical arm 202 is hingedly connected to the support frame 201 at one end to form a rotatable support structure. The drive motor 204 is drivingly connected to the mechanical arm 202 for driving the mechanical arm 202 to rotate horizontally around the hinge point. During operation, the drive motor 204 unfolds the crossbar 203 from the initial position to the working position directly above the locomotive roof, and after the operation is completed, the drive motor 204 drives the corresponding mechanical arm 202 to rotate in the opposite direction, so that the free end of each mechanical arm 202 and the crossbar 203 are returned to the initial position. The other end (free end) of the mechanical arm 202 is connected to the crossbar 203, and the crossbar 203 serves as a stable load-bearing beam along the length direction of the locomotive. The plurality of suspension mechanisms 205 are arranged on the crossbar 203, and each suspension mechanism 205 is available for one worker. During operation, the worker connects the safety belt to the suspension mechanism 205, and as the worker moves, the suspension mechanism 205 moves freely within the length range of the crossbar 203. The embodiment of the present disclosure solves the problem that the fixed hanging point safety rope solution in the related art cannot achieve dynamic protection throughout the process without blind area, and further provides a safety protection device that does not depend on the locomotive body, can be automatically deployed, has wide coverage, and does not affect normal operation, to realize continuous and reliable protection of workers operating at high places.

[0034] Figure 3 A schematic diagram of another safety protection device in the embodiment of the present disclosure is shown in FIG. 2B. Figure 3 As shown, the safety protection device comprises a mechanical arm 202, a drive motor 204, and a suspension mechanism 205.

[0035] Drive motor 204: connected to the mechanical arm 202 to provide power for the mechanical arm 202, and drives the mechanical arm 202 to rotate or extend and retract through a transmission mechanism (such as a gear, a lead screw, or a chain), to realize the unfolding and retraction functions.

[0036] The mechanical arm 202 is in a truss structure, one end of which is connected to the driving motor 204, and the other end is suspended above the working area. Reinforcing ribs and diagonal braces are arranged inside the mechanical arm 202 to enhance the overall rigidity and bending resistance, so as to ensure stability when the suspension mechanism is loaded.

[0037] The suspension mechanism 205 is arranged below the free end of the mechanical arm 202. The suspension mechanism 205 is connected to the end of the mechanical arm or the crossbar by a hanging manner, and can move longitudinally along the mechanical arm to provide a dynamic safety rope anchor point for the worker.

[0038] The embodiment controls the rotation of the mechanical arm 202 by the driving motor 204, moves the suspension mechanism 205 to the required position, and realizes continuous safety protection for the worker at high altitude. The design is suitable for high-altitude working scenes such as locomotive roof, and has the characteristics of compact structure, smooth operation and easy maintenance.

[0039] Figure 4 A schematic diagram of a suspension mechanism in an embodiment of the present disclosure is shown, as shown in Figure 4 The suspension mechanism includes a pulley mechanism 2051, a safety rope 2052, and a fall arrest mechanism 2053.

[0040] The pulley mechanism 2051 is arranged on the crossbar, and the pulley mechanism 2051 can slide on the crossbar; one end of the safety rope 2052 is fixed to the pulley mechanism 2051, and the other end is connected to one end of the fall arrest mechanism 2053; the other end of the fall arrest mechanism 2053 is provided with a connecting part.

[0041] In this embodiment, the pulley mechanism 2051 is installed on the crossbar 203, including a sliding block body, a roller set and a guide structure, which can freely slide along the length direction of the crossbar 203, so as to follow the lateral movement of the worker. One end of the safety rope 2052 is fixed to the housing or fixed seat of the pulley mechanism 2051, and the other end is connected to one end of the fall arrest mechanism 2053. The fall arrest mechanism 2053 is a differential speed sensing type speed difference self-controller, which is internally provided with a centrifugal trigger locking mechanism and a coil spring retraction assembly, and the output end is provided with a connecting part (such as a D-shaped ring or a quick hanging interface) for directly connecting with the safety belt of the worker. When the worker walks normally, the safety rope 2052 stretches and contracts smoothly; once falling occurs, the fall arrest mechanism 2053 immediately locks when detecting that the falling speed of the safety rope 2052 exceeds the threshold value, and transmits the impact load to the crossbar 203, so as to prevent the worker from continuing to fall.

[0042] In an optional embodiment, a limiting guide rail assembly is added between the pulley mechanism 2051 and the crossbar 203. The limiting guide rail assembly includes a linear guide rail fixed to the lower surface of the crossbar 203 and a guide sliding block fixed to the pulley mechanism 2051, which form a sliding pair. The limiting guide rail assembly is used to constrain the pulley mechanism 2051 to move only axially along the crossbar 203, preventing it from deflecting, swaying or derailing when subjected to lateral force, thereby improving the stability and safety of the operation of the suspension mechanism 205.

[0043] Figure 5 A schematic diagram showing the relationship between the safety protection device and the moving range and direction of the worker in an embodiment of the present disclosure is shown in FIG. 5. Figure 5 The worker can move along the direction of the crossbar 203 or along the direction of the mechanical arm 202. The moving range of the worker is a predetermined distance from the crossbar 203. The predetermined distance is related to the safety rope of the suspension mechanism and the safety belt of the worker.

[0044] In an embodiment of the present disclosure, the connecting part is used to connect the safety belt of the worker, and the anti-falling mechanism is used to automatically lock the safety rope when detecting that the falling speed of the safety rope exceeds a predetermined threshold.

[0045] In this embodiment, the connecting part of the anti-falling mechanism 2053 is directly connected to the hook of the worker's safety belt, forming a reliable human-machine connection between the worker and the entire safety protection system. The anti-falling mechanism 2053 is internally integrated with a speed sensing device (such as a centrifugal pendulum or a ball chute mechanism) and a brake locking assembly (such as a ratchet-pawl or a friction clamping mechanism). When the worker moves normally, the safety rope 2052 can be freely extended and retracted, and the anti-falling mechanism 2053 is in a released state. Once an accidental fall occurs, the safety rope 2052 is rapidly pulled down, causing the internal rotating shaft to rotate at high speed, triggering the speed sensing device to act, and then driving the brake locking assembly to quickly clamp the safety rope 2052 or lock the rope winding wheel, achieving automatic locking of the safety rope 2052, thereby transmitting the falling impact force to the crossbar 203, effectively preventing the worker from continuing to fall, and ensuring personal safety. The predetermined threshold corresponds to the critical acceleration or speed of human body falling (for example, the falling speed exceeding 1.5 m / s triggers the locking).

[0046] ​In an optional embodiment, the connecting part of the fall arrest mechanism 2053 is replaced by a shock-absorbing connecting assembly with a buffer bag, which includes a high-strength woven belt, a tearing and sewing structure, and a metal hanging ring. When a fall occurs and is locked, if the impact force exceeds a set value (e.g., 6 kN), the tearing and sewing structure will gradually break to extend the braking distance, thereby reducing the peak impact force acting on the body of the worker. This shock-absorbing connecting assembly can effectively reduce the risk of injury to the human spine and internal organs during the fall braking process, and improve the safety and ergonomics of the overall protection system.

[0047] In an embodiment of the present disclosure, the safety rope is a retractable safety rope, which includes a rope body and a coil spring retraction mechanism arranged inside the pulley assembly; the coil spring retraction mechanism is used to provide a constant pulling force to the rope body to achieve automatic winding.

[0048] In this embodiment, the coil spring retraction mechanism is integrally arranged inside the housing of the pulley mechanism 2051. One end of the rope body is fixedly connected to the winding drum of the coil spring retraction mechanism, and the other end is led out and connected to the fall arrest mechanism 2053. The coil spring retraction mechanism is composed of a high-elasticity alloy coil spring, a winding drum, a damping adjustment assembly, and a guide wheel. It can store elastic potential energy when the worker moves to pull out the rope body, and release energy to apply a constant and controllable pulling force to the rope body when the worker stops moving or returns to the anchor point direction, thereby achieving automatic winding of the safety rope 2052, avoiding the rope body being dragged, entangled, or hooked by the locomotive components below the crossbar 203. This structure not only improves the convenience of operation, but also ensures that the safety rope is always in a tensioned state, which is beneficial to the accurate sensing of the falling dynamics by the fall arrest mechanism 2053.

[0049] In an optional embodiment, the damping adjustment assembly in the coil spring retraction mechanism is replaced by an electromagnetic damping device, which includes a magnet, a conductive disc, and a control circuit. The damping torque can be dynamically adjusted according to the pulling speed of the safety rope 2052. When the worker moves slowly, the damping force is small, ensuring smooth winding. When rapid pulling occurs (e.g., during the initial stage of falling), electromagnetic induction generates stronger eddy current resistance, which assists the fall arrest mechanism 2053 to suppress high-speed motion in advance and shorten the locking response distance. This electromagnetic damping device improves the dynamic response performance and overall protection reliability of the safety rope system.

[0050] In an embodiment of the present disclosure, the safety protection device further includes a ground control system; the ground control system is in communication connection with each drive motor; the ground control system is used to control the rotation of the mechanical arm driven by each drive motor.

[0051] In this embodiment, the ground control system is connected to each drive motor 204 through wired or wireless communication; the ground control system is configured to send control instructions to each drive motor 204 to control the mechanical arm 202 connected to the drive motor 204 to rotate around the hinge point of the support frame 201.

[0052] The ground control system generally includes an operation panel, a programmable logic controller (PLC), and a power and signal interface module. The operation panel is provided with "unfolding", "folding back", and "emergency stop" buttons. The PLC drives each drive motor 204 to rotate forward or backward synchronously or independently according to the operation instructions, thereby achieving accurate positioning and safe return of the horizontal rod 203. In addition, the ground control system can also integrate a limit switch feedback signal. When the mechanical arm 202 rotates to a preset working position or an initial position, the motor operation is automatically stopped to prevent overload or structural collision.

[0053] In an optional embodiment, the ground control system is additionally provided with a position encoder and a human-computer interaction touch screen. The position encoder is installed on the output shaft of each drive motor 204 or the hinge shaft of the mechanical arm 202, and is configured to collect the rotation angle of the mechanical arm 202 in real time and feed back the data to the PLC. The touch screen is configured to display the current state of each mechanical arm 202, the position coordinates of the horizontal rod 203, and system fault information, and support an operator to input a target angle for fine adjustment. This improvement improves the automation accuracy and operation convenience of the device, and is particularly suitable for high-altitude work scenes under different vehicle models or complex working conditions.

[0054] In one embodiment of the present disclosure, each support frame is installed on a different workshop load-bearing column through a bolt structure.

[0055] In this embodiment, the bolt structure includes a chemical anchor or a high-strength expansion bolt embedded in the load-bearing column, a connecting bottom plate, and a fastening nut assembly. The bottom of the support frame 201 is provided with a mounting flange matched with the connecting bottom plate. The support frame 201 is firmly fixed to the side surface or the top of the load-bearing column through a plurality of bolt pairs. This connection method not only facilitates on-site assembly and later disassembly and maintenance, but also effectively transmits the bending moment and shear force generated by the mechanical arm 202 in the unfolded and loaded state, ensuring the structural stability and safety of the entire safety protection device during high-altitude work.

[0056] In an alternative embodiment, the connecting base plate in the bolt structure is replaced by an adjustable mounting bracket, which includes a horizontal adjustment sliding groove, a vertical fine adjustment screw rod and a locking mechanism, allowing three-dimensional fine adjustment of the position of the support frame 201 during installation to adapt to size deviations between different workshop load-bearing columns or uneven surfaces. The adjustable mounting bracket improves the on-site adaptation capability of the device, ensures the consistency of the installation reference between multiple support frames 201, and thus ensures that the cross bars 203 are in the same horizontal plane after deployment, improving the overall running stability.

[0057] In an embodiment of the present disclosure, the driving motor includes a motor and a reducer, and the output shaft of the motor is connected with the rotating shaft of the mechanical arm through a gear pair.

[0058] In this embodiment, the motor is a servo motor or an AC asynchronous motor with a brake function, and the output power is reduced in speed and increased in output torque through an internal or external reducer (such as a planetary reducer or a worm and gear reducer). The output end of the reducer is engaged with a driven gear fixed on the rotating shaft of the mechanical arm 202 through a driving gear, forming a gear pair transmission structure. The gear pair can adopt straight teeth, helical teeth or curved teeth, and is provided with a protective cover to prevent dust from entering and lubricating grease from leaking. Through this transmission mode, the driving motor 204 can accurately and smoothly control the horizontal rotation of the mechanical arm 202 around its hinge point with the support frame 201, realize reliable deployment and return of the cross bar 203, and at the same time have sufficient static holding force to resist wind load or operation disturbance.

[0059] In an alternative embodiment, the gear pair is replaced by a synchronous belt wheel transmission mechanism, which includes a driving belt wheel installed on the output shaft of the reducer, a driven belt wheel installed on the rotating shaft of the mechanical arm 202, and a high-strength synchronous belt tensioned between the two. This structure can effectively absorb part of the impact vibration, reduce the operating noise, and avoid the rigid impact caused by gear engagement, while ensuring transmission accuracy and improving the running stability and service life of the device.

[0060] In an embodiment of the present disclosure, a limiting stopper is provided on the support frame, and the limiting stopper is used to limit the rotation angle of the mechanical arm.

[0061] In this embodiment, the limiting blocks are fixedly installed on the side or top of the support frame 201, located at corresponding positions at both ends of the rotation path of the robotic arm 202. They are typically made of high-strength steel or wear-resistant engineering plastics, and their structure is a raised stop block or a limiting seat with a buffer pad. When the robotic arm 202 rotates to the working unfolded position or the initial retracted position under the drive of the drive motor 204, the contact arm or end block on the robotic arm 202 physically abuts against the limiting blocks, thereby preventing it from continuing to rotate. This ensures that the robotic arm 202 operates safely within a preset angle range (e.g., 0° to 90°), preventing structural interference, cable breakage, or collision of the crossbar 203 with the locomotive equipment due to over-rotation.

[0062] In one optional embodiment, the limit stop integrates a position sensor, which is a proximity switch or a micro switch. When the robotic arm 202 touches the limit stop, the sensor sends a position signal to the ground control system, triggering the drive motor 204 to automatically power off and stop. This design not only achieves mechanical limiting but also provides electrical feedback, improving the system's control accuracy and safety, and avoiding the error risks that may arise from relying solely on the motor encoder to determine the position.

[0063] Figure 6 This diagram illustrates a physical example of a safety protection device in a workshop according to an embodiment of the present disclosure. Figure 6 As shown: Each support frame 201 and drive motor 204 is installed on different workshop load-bearing columns (walls). Each robotic arm 202 is hinged to a support frame and driven by a drive motor 204. The crossbar 203 is fixedly connected to the free end of each robotic arm 202. The crossbar has a safety rope 2052 and a fall arrest mechanism 2053.

[0064] Figure 7 A schematic diagram of another safety protection device in a workshop, as shown in an embodiment of this disclosure, is provided. Figure 7 As shown: Each support frame 201 is on a different workshop load-bearing column (wall), and each robotic arm 202 is hinged to a support frame. The crossbar 203 is fixedly connected to the free end of each robotic arm 202.

[0065] Figure 8 A flowchart illustrating a method of using a safety protection device according to an embodiment of this disclosure is shown. The method is as follows: Figure 8 As shown, it includes the following steps: S801, each support frame is installed on a different load-bearing column in the workshop; S802, during operation, each drive motor is started, driving the corresponding robotic arm to rotate around its hinge axis with the support frame, so that the free end and crossbar of each robotic arm rotate to the area above the locomotive roof.

[0066] In this embodiment, by fixing the support frame to different load-bearing columns in the workshop, during operation, the drive motor drives the corresponding robotic arm to rotate around the hinge axis, causing the crossbar to move synchronously with the free end of the robotic arm to the area above the locomotive roof, thus providing a stable foundation for the safety rope suspension for high-altitude operations. This solves the problem that fixed-point safety rope solutions in related technologies cannot achieve dynamic protection throughout the entire process without blind spots, and provides a safety protection device that does not rely on the locomotive itself, can be automatically deployed, has a wide coverage area, and does not affect normal operations, thereby achieving continuous and reliable protection for personnel working at heights.

[0067] In one optional embodiment, after the operation is completed, each drive motor is started to run in reverse, driving the corresponding robotic arm to rotate in the opposite direction around its hinge axis with the support frame. This causes the free ends of each robotic arm, along with the crossbars, to synchronously exit the area above the locomotive roof and return to their initial positions, thus avoiding obstruction from hoisting equipment or other subsequent procedures. Through these technical means, it is ensured that the device does not occupy the space above the locomotive when not in operation, avoiding interference with other operations during the maintenance process.

[0068] In one embodiment of this disclosure, the suspension mechanism includes a pulley mechanism, a safety rope, and a fall arrest mechanism. The pulley mechanism is mounted on a crossbar and can slide on the crossbar. One end of the safety rope is fixed to the pulley mechanism, and the other end is connected to one end of the fall arrest mechanism. The other end of the fall arrest mechanism is provided with a connecting part. The method includes: during operation, starting each drive motor to run in the forward direction, driving the corresponding robotic arm to rotate in the forward direction, so that the free end of each robotic arm and the crossbar are extended from the initial position to the working position directly above the locomotive roof; the operator connects the safety belt to the connecting part of a suspension mechanism, and when the operator moves horizontally, the pulley mechanism of the suspension mechanism slides on the crossbar; when the operator moves vertically, the safety rope of the suspension mechanism automatically extends and retracts with the movement; after the operation is completed, the operator unfastens the safety belt from the connecting part, starts each drive motor to run in the reverse direction, driving the corresponding robotic arm to rotate in the reverse direction, so that the free end of each robotic arm and the crossbar return to the initial position.

[0069] In this embodiment, the safety protection device controls the rotation of the robotic arm via a drive motor. During operation, the crossbar is extended from its initial retracted state to a working position directly above the locomotive roof. After connecting to the suspension mechanism, the operator can move freely horizontally and drive the pulley mechanism to slide along the crossbar. Simultaneously, vertical movement is automatically adapted by the extension and retraction of the safety rope. After the operation is completed, the connection is released, and the robotic arm is driven in the opposite direction to return the crossbar to its original position. This technical approach solves the problem of unusable safety belts caused by the failure of traditional attachment points due to locomotive structure disassembly.

[0070] In an optional embodiment, during operation, each drive motor receives a synchronization signal from the ground control system to drive the corresponding mechanical arm to rotate at a preset speed curve, so that the crossbar is smoothly deployed to the working position; after the operator connects the suspension mechanism, the horizontal movement is realized by the low-friction sliding of the pulley mechanism on the crossbar, and the vertical displacement is automatically adjusted by the spring retraction mechanism integrated in the anti-falling mechanism to adjust the length of the safety rope; after the operation is completed, the system first detects that all the connection parts of the suspension mechanism are in the unconnected state, and then starts the drive motor to operate in reverse according to the time sequence, so that each mechanical arm is turned to the initial position in turn, avoiding the interference of multi-arm movement. Through the above technical means, the synchronization, safety and operation efficiency of the device are improved.

[0071] Other embodiments of the disclosure will be apparent to those skilled in the art from consideration of the specification and practice of the features disclosed herein. The disclosure is intended to cover any variations, uses or adaptations of the disclosure following, in general, the principles of the disclosure and including such features that are evident to those skilled in the art or are known in the art and can be used in combination with the disclosure. The specification and examples are to be regarded as illustrative only, and the true scope of the disclosure is indicated by the appended claims.

Claims

1. A safety protection device, characterized in that, include: A crossbar, multiple suspension mechanisms, at least two support frames, robotic arms, and drive motors, wherein the number of support frames, robotic arms, and drive motors are equal; Each support frame is installed on a different workshop load-bearing column. Each robotic arm is hinged to a support frame and driven by a drive motor. The crossbar is fixedly connected to the free end of each robotic arm, and multiple suspension mechanisms are set on the crossbar.

2. The safety protection device according to claim 1, characterized in that, The suspension mechanism includes a pulley mechanism, a safety rope, and a fall protection mechanism; The pulley mechanism is mounted on the crossbar and can slide on the crossbar; One end of the safety rope is fixed to the pulley mechanism, and the other end is connected to one end of the fall protection mechanism; The other end of the fall protection mechanism is provided with a connecting part.

3. The safety protection device according to claim 2, characterized in that, include: The connecting part is used to connect the worker's safety belt; The fall arrestor is used to automatically lock the safety rope when the falling speed of the safety rope exceeds a preset threshold.

4. The safety protection device according to claim 2, characterized in that, The safety rope is a retractable safety rope, including a rope body and a coil spring retraction mechanism, wherein the coil spring retraction mechanism is located inside the pulley assembly; The coil spring retraction mechanism is used to provide a constant pull force to the rope to achieve automatic winding.

5. The safety protection device according to claim 1, characterized in that, The safety protection device also includes a ground control system; The ground control system is communicatively connected to each drive motor; The ground control system is used to control the rotation of the robotic arm that is driven and connected to each drive motor through each drive motor.

6. The safety protection device according to claim 1, characterized in that, Each supporting frame is installed on a different workshop load-bearing column via bolts.

7. The safety protection device according to claim 1, characterized in that, The drive motor includes a motor and a reducer, and the output shaft of the motor is connected to the rotation shaft of the robotic arm through a gear pair.

8. The safety protection device according to claim 1, characterized in that, The support frame is provided with a limiting block, which is used to limit the rotation angle of the robotic arm.

9. A method of using a safety protection device, characterized in that, The safety protection device includes: a crossbar, multiple suspension mechanisms, at least two support frames, robotic arms, and drive motors, wherein the number of support frames, robotic arms, and drive motors is the same; each support frame is installed on a different workshop load-bearing column, each robotic arm is hinged to a support frame, each robotic arm is driven by a drive motor, the crossbar is fixedly connected to the free end of each robotic arm, and multiple suspension mechanisms are arranged on the crossbar; The method includes: Each support frame was installed on a different load-bearing column in the workshop. During operation, each drive motor is started, driving the corresponding robotic arm to rotate around its hinge axis with the support frame, so that the free end of each robotic arm and the crossbar rotate to the area above the locomotive roof.

10. The method according to claim 9, characterized in that, The suspension mechanism includes a pulley mechanism, a safety rope, and a fall arrest mechanism; the pulley mechanism is mounted on the crossbar and can slide on the crossbar; one end of the safety rope is fixed to the pulley mechanism, and the other end is connected to one end of the fall arrest mechanism; the other end of the fall arrest mechanism is provided with a connecting part. The method includes: During operation, each drive motor is started to run in the forward direction, driving the corresponding robotic arm to rotate in the forward direction, so that the free end of each robotic arm and the crossbar are extended from the initial position to the working position directly above the locomotive roof. The worker connects the safety belt to the connection part of a suspension mechanism. When the worker moves horizontally, the pulley mechanism of the suspension mechanism slides on the crossbar. When the worker moves vertically, the safety rope of the suspension mechanism automatically extends and retracts with the movement. After the operation is completed, the operator unfastens the safety belt from the connection part, starts each drive motor to run in reverse, drives the corresponding robotic arm to rotate in reverse, so that the free end of each robotic arm and the crossbar return to the initial position.

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