Safety interlocking anti-mistaken-entry device

Abstract

The utility model relates to the field of anti-mistaken-entry devices, in particular to a safety interlocking anti-mistaken-entry device. The system comprises a main control cabinet PLC, a light emitter assembly and a receiver assembly. The light emitter assembly comprises three light emitters adjustable in three directions, and the three light emitters are electrically connected to the V switching power supply; the number of the receiver assemblies is three, each receiver assembly comprises a direction-adjustable receiver, the three receivers are electrically connected to the V switching power supply, and a black wire and a white wire which are output by aviation plug signals at the lower ends of the three receivers are connected in parallel to the main control cabinet PLC. The device is simple in structure, convenient to install and incapable of avoiding detection by people.

Description

Technical Field

[0001] The utility model relates to the field of anti-mistaken-entry devices, in particular to a safety interlocking anti-mistaken-entry device. Background Art

[0002] The electron accelerator irradiation processing technology uses microwaves and magnetic fields to accelerate electrons in an ultra-vacuum accelerator tube to a speed close to the speed of light to obtain high-energy electrons. The interaction between high-energy electrons and matter produces physical and biological reactions, thereby achieving the effects of inactivation and changing material properties, thereby extending the shelf life of crops and food, sterilizing and disinfecting medical supplies, and treating sewage. It is a relatively advanced processing method and technology. At present, the control area of ​​the electron accelerator irradiation device is controlled by multiple photoelectric sensors. The X-rays and gamma rays generated by the ionizing radiation in this area are both highly penetrating high-energy rays, which are highly destructive to the photoelectric switches installed in the strong radiation area, causing changes in the parameters of the electrical components, affecting the normal operation of the internal circuit of the photoelectric switch, and in severe cases, causing the components to fail. As a result, the photoelectric switch has a high failure rate, resulting in frequent failure of its operation, seriously affecting production safety, and requiring frequent shutdowns to enter the strong radiation area for inspection and replacement of the photoelectric switch, which seriously affects the continuous normal operation of the accelerator irradiation device.

[0003] Existing electron irradiation accelerator devices use multiple photoelectric sensors installed in different heights and different areas in series to prevent accidental entry into the irradiation area. The photoelectric sensors are installed with brackets of different lengths. The construction is time-consuming and labor-intensive, there are many cable joints, and the fault rate is high. People can jump up manually to avoid detection. Utility Model Content

[0004] The utility model aims to solve the problems existing in the background technology and proposes a safety interlocking anti-mistaken entry device which has a simple structure, is easy to install and cannot be detected by humans.

[0005] The technical solution of the utility model is a safety interlocking device to prevent misentry, which includes a main control cabinet PLC, a light emitter assembly and a receiver assembly; the light emitter assembly includes three light emitters with adjustable directions, and the three light emitters are electrically connected to a V switching power supply; a total of three groups of receiver assemblies are arranged, each group of receiver assemblies includes a direction-adjustable receiver, and the three receivers are electrically connected to a V switching power supply, and the black and white wires of the aviation plug signal outputs at the lower ends of the three receivers are connected in parallel to the main control cabinet PLC.

[0006] Preferably, the light emitter assembly comprises a bracket a, and the light emitter is rotatably mounted on the bracket a.

[0007] Preferably, the receiver assembly comprises a bracket b, and the receiver is rotatably mounted on the bracket b.

[0008] Preferably, among the three brackets b, any two adjacent brackets b are spaced 1.5 meters apart.

[0009] Compared with the prior art, the utility model has the following beneficial technical effects:

[0010] The utility model has a simple structure, is easy to install and cannot be manually avoided. If an object is between the light emitter and the receiver, the receiver cannot receive a complete signal, and a stop signal will be sent to the main control cabinet PLC. After the main control cabinet PLC receives a safety interlock signal, it will turn off the high-voltage beam-out permission signal, thereby preventing people from entering unsafe areas. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 It is a schematic diagram of the structure of an embodiment of the utility model;

[0012] Figure 2 Schematic diagram of the wiring method of the light emitter and the receiver in the embodiment of the utility model.

[0013] Figure numerals: 1. light emitter; 2. bracket a; 3. receiver; 4. bracket b; 5. main control cabinet PLC. DETAILED DESCRIPTION

[0014] like Figure 1 and Figure 2 As shown, the safety interlocking anti-mistaken entry device proposed by the utility model includes a main control cabinet PLC5, a light emitter component and a receiver component.

[0015] The light emitter assembly includes three direction-adjustable light emitters 1 and a bracket a2 for rotatably mounting the light emitters 1. The three light emitters 1 are electrically connected to a 24V switching power supply.

[0016] There are three groups of receiver components, each of which includes a direction-adjustable receiver 3 and a bracket b4 for rotating the receiver 3. The three receivers 3 are electrically connected to a 24V switching power supply, and the black and white wires of the aviation plug signal output at the bottom of the three receivers 3 are connected in parallel to the main control cabinet PLC5. Among the three brackets b4, any two adjacent brackets b4 are spaced 1.5 meters apart.

[0017] This embodiment has a simple structure, is easy to install, and cannot be manually avoided from detection. First, install a bracket a2 at the transmission line exit corner, entrance corner, and entrance passage corner of the bottom maze, and then install three light emitters 1 into bracket a2, and install three receivers 3 into three brackets b4 respectively. Then fix bracket a2 to the ground wall at the corner of the entrance of the main engine room with expansion screws. Use an infrared level to map the infrared ray to the center of the lowest transmitting hole of the light emitter. When installing the receiver 3, align the infrared ray with the center of the lowest receiving hole of the receiver 3, and fix the upper and lower fixing holes of bracket b4 with expansion screws. Install the other two receivers 3 at intervals of 1.5 meters according to the above method. Lay a three-core shielded wire from the main console to any receiver end, insert the aviation plug of the light emitter 1 into the light emitter 1, and merge 24V and 0V into the red and blue wires of the three-core shielded wire respectively. Insert the aviation plugs of the other two receivers 3 into the light emitter 1, merge 24V and 0V into the red and blue wires of the three-core shielded wire respectively, and merge the black wire of the signal wire into the black wire of the three-core shielded wire. Connect the red and blue wires of the three-core shielded wire to the 24V and 0V of the switching power supply. Connect the black wire of the three-core shielded wire to the Q point of the main console PLC5. After power on, adjust the angles of the three groups of light emitters 1 and receivers 3 so that each group of gratings can receive signals normally. If an object is between the light emitter 1 and the receiver 3, the receiver 3 cannot receive the complete signal, and it will send a stop signal to the main control cabinet PLC5. After receiving a safety interlock signal, the main control cabinet PLC5 will turn off the high-voltage beam-out permission signal, thereby preventing people from entering unsafe areas.

[0018] The implementation modes of the present invention are described in detail above in conjunction with the accompanying drawings, but the present invention is not limited thereto, and various changes can be made within the knowledge scope of technicians in the relevant technical field without departing from the purpose of the present invention.

Claims

1. Safety interlocking device to prevent mistaken entry, characterized in that: include: Main control cabinet PLC (5); A light emitter assembly, comprising three direction-adjustable light emitters (1), the three light emitters (1) being electrically connected to a (24)V switching power supply; The receiver components are provided in three groups, each group of the receiver components includes a direction-adjustable receiver (3), the three receivers (3) are electrically connected to a (24)V switching power supply, and the black and white wires of the aviation plug signal output at the lower ends of the three receivers (3) are connected in parallel to the main control cabinet PLC (5).

2. The safety interlocking anti-incorrect entry device according to claim 1, characterized in that: The light emitter assembly comprises a bracket a (2), and the light emitter (1) is rotatably mounted on the bracket a (2).

3. The safety interlocking anti-incorrect entry device according to claim 2, characterized in that: The receiver assembly comprises a bracket b (4), and the receiver (3) is rotatably mounted on the bracket b (4).

4. The safety interlocking anti-incorrect entry device according to claim 3, characterized in that: Among the three brackets b(4), any two adjacent brackets b(4) are spaced 1.5 meters apart.

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