A safety control system based on a safety door life handle

Abstract

The utility model relates to a kind of safety control system based on safety door life handle.The utility model includes safety door, is set to the entrance of the safety area needing protection, safety door is equipped with safety door lock;Shielding button box is set to the vicinity of safety door, shielding button box is provided with shielding button, shielding button can generate shielding signal when being pressed;Safety door life handle is connected with shielding button box by cable, safety door life handle is provided with life button, can generate first equipment control signal when being continuously pressed, when being released after continuously pressed, can generate second equipment control signal;Control module includes input module and controller.The utility model can guarantee that equipment operating state is not affected at the same time, so that personnel can quickly cut off equipment power in emergency, so that under the premise of guaranteeing the safety of operator, enter the safety area in equipment operation.

Description

Technical Field

[0001] This utility model relates to the field of conveyor safety control technology, and in particular to a safety control system based on the life handle of a safety door. Background Technology

[0002] In automobile assembly workshops, numerous automated conveyor systems, robotic arms, and inspection stations are typically installed to transport and assemble doors, body panels, and other components. These systems involve high-speed moving parts and motor-driven mechanisms, posing significant safety risks to personnel entering the area. To ensure operator safety, current technology generally involves perimeter fencing around hazardous areas and equipping safety doors with electrically controlled locks. When personnel need to enter the safe area, the safety lock is connected to a programmable logic controller (PLC). The PLC then uses signals to stop the equipment within the area, allowing the safety door to unlock and open.

[0003] However, certain special operating conditions exist in actual production and maintenance processes. For example, some equipment may exhibit abnormal noises, vibrations, or instability during operation, requiring maintenance personnel to conduct close observation and troubleshooting while the equipment is running. In such cases, relying solely on traditional safety door locks and shutdown mechanisms is insufficient to meet the need for observation while the equipment is running. However, directly disabling the shutdown protection mechanism to enter the hazardous area would significantly increase the risk of personal injury, posing a serious safety hazard.

[0004] In response to the above contradictions, some factories have tried to enter by temporarily blocking door locks or manually operating bypasses. However, in this way, if the operator loses consciousness or encounters danger, there is no effective way to quickly shut down the equipment. Summary of the Invention

[0005] Therefore, this utility model provides a safety control system based on a safety door life handle, which can ensure that the equipment operation status is not affected, while enabling personnel to quickly cut off the equipment power in an emergency, so as to enter the safe area where the equipment is running under the premise of ensuring the safety of the operator.

[0006] To solve the above-mentioned technical problems, this utility model provides a safety control system based on the life handle of a safety door, comprising: A safety gate is installed at the entrance of a security area that needs to be protected, the security area being surrounded by a security fence, and the safety gate is equipped with a safety lock. A shielding button box is located near the safety door. The shielding button box is equipped with a shielding button, which generates a shielding signal when pressed. The safety door life handle is connected to the shielded button box via a cable. The safety door life handle is equipped with a life button. When the life button is continuously pressed, it can generate a first device control signal. When the life button is released after being continuously pressed, it can generate a second device control signal. The control module includes an input module and a controller. The input module is electrically connected to the shielding button box and the safety door life handle, respectively, and is used to transmit the shielding signal, the first device control signal and the second device control signal to the controller. The controller can control the safety door lock to enter the shielded state according to the shielding signal, so as to allow the operator to open the safety door and enter the safe area when the equipment is running; After an operator enters the safe area where the equipment is in operation, the controller can control the equipment to continue operating according to the first equipment control signal, and can control the equipment in the safe area to stop operating according to the second equipment control signal, so as to ensure the safety of the operator.

[0007] In one embodiment of this utility model, the controller is a PLC.

[0008] In one embodiment of this utility model, the safety door lock is connected to the controller via a fieldbus.

[0009] In one embodiment of this utility model, the input module is a switch input module.

[0010] In one embodiment of this utility model, the length of the cable is determined according to the maximum working distance of the operator entering the safe area, so as to ensure that the operator can continuously press the life button from any position within the area.

[0011] In one embodiment of this utility model, a status indicator light is provided on the shielding button box to indicate the operation status of the shielding button.

[0012] In one embodiment of this utility model, the safety door life handle is a handheld structure and is provided with an ergonomic grip so that the operator can press the life button for a long time.

[0013] In one embodiment of this utility model, the control module further includes an audible and visual alarm module, which can trigger an audible and visual alarm based on the second device control signal to alert other personnel.

[0014] The above-mentioned technical solution of this utility model has the following advantages compared with the prior art: This utility model describes a safety control system based on a safety door life handle. By setting a life button on the safety door life handle, when the operator continuously presses the life button, the controller maintains the equipment operation according to the first equipment control signal. In this way, when the equipment has abnormal operating conditions such as abnormal noise or vibration, maintenance personnel can enter the safe area to observe and troubleshoot while the equipment is running, without having to completely shut down the machine. This improves the real-time nature of fault diagnosis and avoids the interference to the production cycle caused by frequent shutdowns in traditional methods. The release signal of the life button is used as a second equipment control signal. Once the operator encounters danger or loses consciousness and is unable to continuously press the life button, the controller immediately triggers a shutdown command, quickly cutting off the equipment power and achieving life protection for personnel.

[0015] By generating a shielding signal through the shielding button box, the controller can put the safety door lock into a shielded state, thus allowing operators to open the safety door while the equipment is running. This design ensures that entry is effectively controlled while maintaining equipment operational continuity, avoiding the risks caused by unauthorized personnel entry.

[0016] The life handle is connected to the shielded button box via a cable, and the cable length is determined based on the operator's maximum working distance within the safe area, ensuring that the operator can continuously press the life button from any position within the area without blind spots, significantly improving practicality and operational flexibility. Attached Figure Description

[0017] To make the content of this utility model easier to understand, the present utility model will be further described in detail below with reference to specific embodiments and accompanying drawings.

[0018] Figure 1 This is a schematic diagram of the safety control system based on the life handle of a safety door, which is a utility model.

[0019] Figure 2 This is a control block diagram of the safety control system based on the life handle of a safety door, which is the basis of this utility model.

[0020] Explanation of reference numerals in the instruction manual: 100. Safety door; 110. Safety door lock; 120. Safety fence; 200. Shielding button box; 210. Shielding button; 300. Safety door emergency handle; 310. Emergency button; 400. Cable; 500. Input module; 600. Controller; 700. Audible and visual alarm module; 800. Equipment motor. Detailed Implementation

[0021] The present invention will be further described below with reference to the accompanying drawings and specific embodiments, so that those skilled in the art can better understand and implement the present invention. However, the embodiments are not intended to limit the present invention.

[0022] In this utility model, when directions (up, down, left, right, front, and back) are described, it is only for the convenience of describing the technical solution of this utility model, and does not indicate or imply that the technical features referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation of this utility model.

[0023] In this utility model, "several" means one or more, "multiple" means two or more, "greater than," "less than," "exceeding," etc. are understood to exclude the stated number; "above," "below," "within," etc. are understood to include the stated number. In the description of this utility model, if "first" or "second" is used, it is only for the purpose of distinguishing technical features and should not be construed as indicating or implying relative importance or implicitly indicating the number of indicated technical features or the order of the indicated technical features.

[0024] In this utility model, unless otherwise explicitly defined, terms such as "set," "install," and "connect" should be interpreted broadly. For example, they can refer to a direct connection or an indirect connection through an intermediate medium; a fixed connection, a detachable connection, or an integrally formed connection; a mechanical connection, an electrical connection, or a connection capable of mutual communication; or the internal connection of two components or the interaction between two components. Those skilled in the art can reasonably determine the specific meaning of the above terms in this utility model based on the specific content of the technical solution.

[0025] Reference Figure 1 , Figure 2 As shown, this utility model discloses a safety control system based on a safety door life handle, comprising: A safety door 100 is installed at the entrance of a safety area that needs to be protected. The safety area is surrounded by a safety fence 120. The safety door 100 is equipped with a safety door lock 110. A shielding button box 200 is located near the safety door 100. The shielding button box 200 is equipped with a shielding button 210, which generates a shielding signal when pressed. The safety door life handle 300 is connected to the shielded button box 200 (connected to the bottom of the shielded button box 200 via cable 400 and connector). The safety door life handle 300 is provided with a life button 310. When the life button 310 is continuously pressed, it can generate a first device control signal. When the life button 310 is released after being continuously pressed, it can generate a second device control signal. The control module includes an input module 500 and a controller 600. The input module 500 is electrically connected to the shielding button box 200 and the safety door life handle 300, respectively, and is used to transmit the shielding signal, the first device control signal and the second device control signal to the controller 600. The controller 600 can control the safety door lock 110 to enter the shielding state according to the shielding signal, so as to allow the operator to open the safety door 100 and enter the safe area when the equipment is running; After an operator enters the safe area where the equipment is in operation, the controller 600 can control the equipment to continue operating according to the first equipment control signal, and can control the equipment in the safe area to stop operating according to the second equipment control signal, so as to ensure the safety of the operator.

[0026] In one embodiment, the controller 600 is a PLC. Further, the safety door lock 110 is connected to the controller 600 via a fieldbus. The input module 500 is a digital input module 500. The controller 600 preferably uses a PLC and can communicate with the safety door lock 110 via a fieldbus. Combined with the digital input module 500, this ensures real-time signal processing and reliable system integration, making it suitable for long-term stable operation in complex production workshop environments.

[0027] In one embodiment, the length of the cable 400 is determined based on the maximum working distance of the operator entering the safe area, so as to ensure that the operator can continuously press the life button 310 from any position within the area.

[0028] In one embodiment, the shielding button box 200 is provided with a status indicator light to indicate the operation status of the shielding button 210, which can intuitively reflect the operation status of the shielding button 210 and avoid the risk caused by misoperation or unclear status.

[0029] In one embodiment, the safety door life handle 300 is a handheld structure with an ergonomic grip, which facilitates long-term gripping and continuous pressing by the operator, reduces fatigue, and improves the sustainability of safe operation.

[0030] In one embodiment, the control module further includes an audible and visual alarm module 700, which can trigger an audible and visual alarm based on the second device control signal. When the device is forced to stop, it triggers an audible and visual prompt to alert personnel outside the area, thus providing dual protection.

[0031] The principle of this invention: The area inside the safety fence 120 is a safe zone. If an operator needs to enter for maintenance, they must press the access request button on the safety door lock 110. Then, the PLC controller 600 stops the motor 800 of the equipment within the safe zone and opens the safety door lock 110. After the safety door 100 opens, personnel can enter the safe zone.

[0032] If an operator needs to enter the safe area where the equipment is in operation, they must first press the shielding button 210 on the shielding button box 200. At this time, the function of the safety door lock 110 is shielded.

[0033] Personnel entering the safe area press the life button 310 on the life handle to open the safety door 100, at which point the equipment operates normally. The cable 400 between the life handle and the shielded button box 200 is long enough for personnel to enter the safe area for inspection.

[0034] The operator needs to continuously press and hold the life button 310 on the life handle. If the operator encounters a dangerous situation, the life handle will be released and the life button 310 will be released. The controller 600 will immediately control the equipment motor 800 in the safe area to stop running, ensuring the safety of personnel.

[0035] Finally, it should be noted that the above specific embodiments are only used to illustrate the technical solution of this utility model and not to limit it. Although this utility model has been described in detail with reference to examples, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solution of this utility model without departing from the spirit and scope of the technical solution of this utility model, and all such modifications and substitutions should be covered within the scope of the claims of this utility model.

Claims

1. A safety control system based on a safety door life handle, characterized in that, include: A safety door (100) is installed at the entrance of a safety area that needs to be protected, the safety area being surrounded by a safety fence (120), and the safety door (100) is equipped with a safety door lock (110). A shielding button box (200) is provided near the safety door (100). The shielding button box (200) is provided with a shielding button (210). The shielding button (210) can generate a shielding signal when it is pressed. The safety door life handle (300) is connected to the shielded button box (200) via a cable (400). The safety door life handle (300) is equipped with a life button (310). When the life button (310) is continuously pressed, it can generate a first device control signal. When the life button (310) is released after being continuously pressed, it can generate a second device control signal. The control module includes an input module (500) and a controller (600). The input module (500) is electrically connected to the shielding button box (200) and the safety door life handle (300) respectively, and is used to transmit the shielding signal, the first device control signal and the second device control signal to the controller (600). The controller (600) can control the safety door lock (110) to enter the shielding state according to the shielding signal, so as to allow the operator to open the safety door (100) and enter the safety area when the equipment is running; After an operator enters the safe area where the equipment is in operation, the controller (600) can control the equipment to continue operating according to the first equipment control signal, and can control the equipment in the safe area to stop operating according to the second equipment control signal, so as to ensure the safety of the operator.

2. The safety control system based on the life handle of a safety door according to claim 1, characterized in that, The controller (600) is a PLC.

3. A safety control system based on a safety door life handle according to claim 1, characterized in that, The security door lock (110) is connected to the controller (600) via a fieldbus.

4. A safety control system based on a safety door life handle according to claim 1, characterized in that, The input module (500) is a digital input module (500).

5. A safety control system based on a safety door life handle according to claim 1, characterized in that, The length of the cable (400) is determined based on the maximum working distance the operator must travel to enter the safe area.

6. A safety control system based on a safety door life handle according to claim 1, characterized in that, The shielding button box (200) is provided with a status indicator light to indicate the operation status of the shielding button (210).

7. A safety control system based on a safety door life handle according to claim 1, characterized in that, The safety door life handle (300) is a handheld structure and is equipped with a grip.

8. A safety control system based on a safety door life handle according to claim 1, characterized in that, The control module also includes an audible and visual alarm module (700), which can trigger an audible and visual alarm based on the second device control signal.

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