A multi-stage trigger based mechanical safety protection system

Abstract

The utility model relates to a kind of mechanical safety protection system based on multistage triggering, belong to safety protection field.The utility model described a kind of mechanical safety protection system based on multistage triggering includes safety control module, two-hand control device, safety monitoring module, active photoelectric protection device, infrared human detector, information control and processing module, safety controller, manual reset device, audible and visual alarm.The utility model can realize active safety protection, and have safety redundancy function;Through the relevant infrared human detector of installation and other intelligent processing module, intelligentization sensing processing degree is improved;Perspective safety protection baffle is installed on the both sides of press working platform, personnel can be observed, and personnel torso can be prevented from invading the dangerous area of press from both sides;Reduce the number of guardians when operating, reduce labor economic cost, realize safety and economy.

Description

Technical Field

[0001] This utility model relates to the field of safety protection technology, specifically a mechanical safety protection system based on multi-level triggering. Background Technology

[0002] Existing measures to prevent crush injuries to operators' fingers, palms, forearms, and other torso areas caused by press mold closing during the production of high-performance fiber composite materials such as bulletproof helmets and bulletproof inserts mainly include:

[0003] One is a patented technology measure for a similar application (authorization announcement number CN222178762 U): a vertical safety light grid fixedly connected to both sides of the front end of the outer shell, a linear guide rail fixedly connected to one side inside the outer shell, a sliding block slidably connected to the side of the linear guide rail, a folding plate bolted to the side of the sliding block, and a laser scanner fixedly connected to the outer surface of the folding plate, which achieves the protective function through linkage.

[0004] Secondly, relying on the emergency stop button installed near the press, in the event of an emergency resulting in personal injury, the injured person or the supervisor can manually press the emergency stop button to stop the press from closing the mold, and then manually switch the press from the mold-closing mode to the mold-opening mode, thereby reducing the severity of personal injury accidents.

[0005] Third, by setting up supervisors and strengthening safety education and training measures for operators, we can prevent personnel from violating regulations or causing personal injury due to inattention or lack of concentration, which could result in the torso entering the dangerous area of ​​the press mold closing mechanism.

[0006] Disadvantages of existing commonly used technologies:

[0007] ① The functional combination is relatively simple, with the main core component being a safety light curtain. It lacks in-depth intelligent monitoring and intelligent processing modules, resulting in insufficient intelligence; it also lacks safety redundancy design.

[0008] ② The press is stopped and the mold is closed by personnel manually pressing the emergency stop button. Then, the personnel manually switch the press from the mold-closed mode to the mold-open mode. At this point, personal injury has already occurred. Because there is a reaction time between the visual injury and the manual triggering of the emergency stop device, the length of this reaction time and the speed of the press's mold-closing directly determine the severity of the injury. The longer the reaction time and the faster the press's mold-closing speed, the more serious the consequences of the accident. According to accident case analysis, the average reaction time for personnel to touch the emergency stop device and switch the hydraulic press to the mold-open mode is more than 4 seconds, which generally leads to serious consequences ranging from comminuted fractures to amputation or death.

[0009] ③ Preventing injuries caused by personnel violations or distraction by setting up supervisors and strengthening safety education and training measures for workers has two main drawbacks: firstly, it requires time and economic costs for personnel supervision and training; secondly, there are many uncontrollable factors caused by changes in physical function and mental state, making it difficult to completely prevent accidental injuries.

[0010] In the production of high-performance fiber composite materials such as bulletproof helmets and bulletproof inserts, the substrate (hereinafter referred to as the substrate) needs to be repeatedly pressed and shaped using a press. Before pressing and shaping, operators need to adjust the position of the substrate on the mold; during the pressure holding process, operators need to promptly handle any abnormalities in the substrate; after pressing and shaping, operators need to promptly remove the substrate from the mold. During this process, there is a risk of personal injury accidents caused by the operator's fingers, palms, forearms, and other torso parts entering the dangerous area of ​​the press mold closing area. According to relevant data, there have been numerous cases of operator personal injury accidents in the high-performance fiber composite material production industry.

[0011] The main technical problem that this utility model needs to solve is: to prevent the fingers, palms and forearms of personnel from being crushed by the press mold during the production of high-performance fiber composite materials such as bulletproof helmets and bulletproof inserts, thereby realizing the safety function of actively preventing mechanical injury accidents. Utility Model Content

[0012] This utility model addresses the shortcomings of existing technologies by providing a mechanical safety protection system based on multi-level triggering, the technical solution of which is as follows:

[0013] A mechanical safety protection system based on multi-level triggering includes:

[0014] The safety control module includes a two-hand control device for controlling the press to execute mold closing commands;

[0015] The safety monitoring module includes an active photoelectric protection device and an infrared human body detector. The active photoelectric protection device is used to detect whether a human torso has entered the press which is in the mold closing state, and the infrared human body detector is used to detect whether a human body is in the operating area behind the press.

[0016] The information control and processing module includes a safety controller, which is used to receive alarm signals, process signals, and issue control commands.

[0017] A reset module, which includes a manual reset device for performing manual reset;

[0018] The alarm module includes an audible and visual alarm to generate an audible and visual alarm.

[0019] As a further embodiment of this invention, the infrared human body detector is an AI smart camera.

[0020] As a further embodiment of this utility model, the two-hand operating device is provided with two buttons. When both buttons are activated simultaneously, the press executes the mold closing command.

[0021] As a further embodiment of this invention, the manual reset device is located between the two buttons.

[0022] As a further embodiment of this invention, the audible and visual alarm is located above the active photoelectric protection device.

[0023] As a further embodiment of this utility model, the mechanical safety protection system based on multi-level triggering also includes transparent safety protection baffles installed on the left and right sides of the press working platform.

[0024] As a further embodiment of this invention, the transparent safety barrier has a mesh structure.

[0025] Compared with the prior art, the beneficial effects of this utility model are:

[0026] 1. The system provides proactive safety protection with redundancy. Firstly, the press only executes the mold-closing command when both hands are pressed on the mold-closing button. Furthermore, if an operator's fingers, palms, forearms, or other torso parts intrude into the dangerous area of ​​the press during mold closing, the safety monitoring module detects the alarm and transmits it to the safety controller before any personal injury occurs. The safety controller then issues a stop mold-closing command. The automatic triggering time of this multi-level trigger-based mechanical safety protection system is in the millisecond range, effectively preventing personal injury.

[0027] 2. By adding relevant infrared human body detectors (AI smart cameras) and other intelligent processing modules, the level of intelligent sensing and processing is improved, laying the foundation for subsequent access to deep AI applications.

[0028] 3. Install transparent safety guardrails on both sides of the press's working platform. This will facilitate observation by personnel and prevent personnel from entering the dangerous area of ​​the press from both sides.

[0029] 4. Reduce the number of supervisors during operations, lower labor costs, and achieve a balance between safety and economy. Attached Figure Description

[0030] Figure 1 This is a front view of the hardware of a multi-level trigger-based mechanical safety protection system.

[0031] Figure 2 This is a schematic diagram of the hardware back of a multi-level trigger-based mechanical safety protection system.

[0032] Figure 3 This is a schematic diagram of a mechanical safety protection system based on multi-level triggering. Detailed Implementation

[0033] The present invention will be described in detail below with reference to specific embodiments. These embodiments are merely some, not all, implementations of the present invention. All other implementations obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.

[0034] Example 1

[0035] like Figures 1-3 As shown, the multi-level trigger-based mechanical safety protection system includes:

[0036] A safety control module, which includes a two-hand control device;

[0037] The security monitoring module includes an active photoelectric protection device and an infrared human body detector.

[0038] The infrared human body detector is an AI smart camera;

[0039] An information control and processing module, which includes a safety controller;

[0040] A reset module, which includes a manual reset device;

[0041] Alarm module, which includes an audible and visual alarm;

[0042] A transparent safety barrier.

[0043] The process of implementing proactive security protection:

[0044] Under normal operating conditions, the infrared human body detector and active photoelectric protection device are in normal monitoring state, the audible and visual alarm is in silent state, the manual reset device is in the release state, and the safety controller is in automatic inspection state.

[0045] When both buttons 4 of the two-hand control device are pressed simultaneously by the operator's two hands (with an interval of no more than 0.5 seconds), the mold-closing command of the high-performance fiber composite hydraulic press (used to press high-performance fiber composites) is activated, and the high-performance fiber composite hydraulic press executes the mold-closing command. This operating procedure can effectively prevent the upper limbs and torso of the human body from entering the mold-closing danger zone of the high-performance fiber composite hydraulic press.

[0046] When the high-performance fiber composite hydraulic press is executing the mold closing command, if the safety monitoring module detects any of the following situations, it will immediately send an alarm signal to the safety controller:

[0047] 1) When the active photoelectric protection device located on the main control panel side of the high-performance fiber composite hydraulic press (hereinafter referred to as "press") detects that a person's torso has entered the dangerous area of ​​the press;

[0048] 2) When the infrared human body detector located on the opposite side (back side) of the main control panel of the press detects a human torso;

[0049] After receiving the alarm signal from the safety monitoring module, the safety controller outputs the following control commands:

[0050] 1) Issue a stop mold closing command to the high-performance fiber composite hydraulic press to immediately stop the mold closing procedure and prevent personal injury accidents to the operators.

[0051] 2) Send an audible and visual alarm signal to the audible and visual alarm installed near the operating position. The audible and visual alarm will quickly emit an alarm sound and flash a light to remind the operator to pay attention to safety.

[0052] 3) Send a "lock" command to the manual reset device, and the manual reset device will change from the "release" state to the "lock" state, so that the high-performance fiber composite hydraulic press cannot be started again.

[0053] Once on-site personnel confirm that there is no danger or the danger has been eliminated, they manually operate the manual reset device to change it from the "locked" state to the "released" state, sending an alarm cancellation signal to the safety controller. Upon receiving the alarm cancellation signal from the manual reset device, the safety controller issues the following instructions:

[0054] 1) Send a command to the press to release the mold closing restriction;

[0055] 2) Send a stop command to the audible and visual alarm, the alarm sound will stop, the flashing lights will turn off, and the audible and visual alarm will switch to silent mode;

[0056] 3) The safety controller switches from emergency response mode to normal automatic inspection mode.

[0057] The press can be restarted normally and production can resume.

[0058] Example 2

[0059] Security monitoring module:

[0060] Active photoelectric protection device 3: Installed on both sides of the frame directly in front of the main operating platform of the high-performance fiber composite hydraulic press. All areas accessible to the mold working platform are placed within the protection range of the active photoelectric protection device. When a human torso intrudes into the press while it is in the mold-closing state, an alarm signal is sent to the safety controller.

[0061] Infrared Human Body Detector 6 (AI Smart Camera): Installed near the hydraulic cylinder above the back-side operating area of ​​the high-performance fiber composite hydraulic press (because the back side of the mold is obstructed by the inlet and outlet pipes of the hydraulic oil system, and the mold is in vertical vertical movement, active photoelectric protection devices cannot be used for protection; therefore, an infrared human body detector is used for protection). The entire back-side operating area of ​​the press is placed within the detection range of the infrared human body detector 6. When the infrared human body detector detects a human body in the back-side operating area of ​​the press, and the press is in the mold-closing state, it sends an alarm signal to the safety controller; the detection range of the infrared human body detector 6 is the human body sensing range area.

[0062] Two buttons 4 of the two-hand operating device are mounted on the operating table of the press. The linear distance between the two buttons 4 is 550mm. The mold closing command of the press can only be activated when both buttons 4 are pressed simultaneously (with an interval of no more than 0.5 seconds), and the press will then execute the mold closing command.

[0063] Transparent safety guardrail 2: Installed on the left and right sides of the press's working platform. It is made of transparent mesh panels, which facilitates observation by personnel and prevents personnel from entering the dangerous area of ​​the press from the sides.

[0064] Safety controller: Its main functions are to receive alarm signals, process signals, and issue control commands.

[0065] Audible and visual alarm 1: Installed in a conspicuous location at the workstation, such as above the active photoelectric protection device 3. Its main function is to issue an audible and visual alarm to alert on-site personnel to any potential personal injury incidents.

[0066] Manual reset device 5: Installed in a conspicuous location at the operating station, such as between the two buttons 4. Its main function is to restore the multi-level trigger-based mechanical safety protection system to its normal inspection state after the system has been activated.

[0067] Key points of the invention

[0068] Without requiring manual intervention, the machine automatically alarms and senses when a worker's torso enters the danger zone of the press while it is in the mold-closing state, before any personal injury occurs. This enables proactive shutdown, rapid response, and quick emergency handling, preventing accidental personal injury.

[0069] This reduces the number of supervisors required during operations, lowers labor costs, and achieves a balance between safety and economy.

[0070] If a worker's fingers, palms, forearms, or other torso parts intrude into the dangerous area of ​​a press that is closing the mold, the multi-level trigger-based mechanical safety protection system will quickly stop the press from executing the mold-closing command before personal injury occurs, thereby preventing mechanical injury accidents and protecting the worker's personal safety.

[0071] It features progressive safety redundancy. First, a transparent safety barrier completely prevents operators from entering the press's hazardous area from unnecessary work areas. Second, the two-hand operation device requires operators to touch the button with both hands to activate the mold closing command, forming the first line of defense. Third, the safety monitoring module uses two independent monitoring / detection devices to provide protection, forming the second line of defense. Fourth, the manual reset device effectively prevents the press's mold closing command from being restarted, forming the third line of defense.

[0072] Furthermore, it should be understood that those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other implementation methods that can be understood by those skilled in the art.

Claims

1. A mechanical safety protection system based on multi-level triggering, characterized in that, include: The safety control module includes a two-hand control device for controlling the press to execute mold closing commands; The safety monitoring module includes an active photoelectric protection device and an infrared human body detector. The active photoelectric protection device is used to detect whether a human torso has entered the press which is in the mold closing state, and the infrared human body detector is used to detect whether a human body is in the operating area behind the press. The information control and processing module includes a safety controller, which is used to receive alarm signals, process signals, and issue control commands. A reset module, which includes a manual reset device for performing manual reset; The alarm module includes an audible and visual alarm to generate an audible and visual alarm.

2. The mechanical safety protection system based on multi-level triggering according to claim 1, characterized in that: The infrared human body detector is an AI smart camera.

3. The mechanical safety protection system based on multi-level triggering according to claim 1, characterized in that: The two-hand operating device is equipped with two buttons. When both buttons are activated simultaneously, the press executes the mold closing command.

4. The mechanical safety protection system based on multi-level triggering according to claim 1, characterized in that: The manual reset device is located between the two buttons.

5. A mechanical safety protection system based on multi-level triggering according to claim 1, characterized in that: The audible and visual alarm is located above the active photoelectric protection device.

6. A mechanical safety protection system based on multi-level triggering according to claim 1, characterized in that: It also includes transparent safety guardrails, installed on the left and right sides of the press's working platform.

7. A mechanical safety protection system based on multi-level triggering according to claim 6, characterized in that: The transparent safety barrier has a mesh structure.

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