Waste briquetting machine protection system

Abstract

The utility model provides a waste briquetting machine protection system, which belongs to the field of briquetting machine safety protection equipment, and comprises a PLC (Programmable Logic Controller), laser sensors and a briquetting machine hydraulic motor, the laser sensors are respectively arranged at a feed port and a discharge port of a briquetting machine, the laser sensors are used for monitoring the feed port and the discharge port of the briquetting machine, and the laser sensors are used for monitoring the feed port and the discharge port of the briquetting machine. The PLC is connected with the laser sensor and the briquetting machine hydraulic motor and used for receiving signals sent by the laser sensor and sending emergency braking signals to the briquetting machine hydraulic motor. According to the protection system, the feeding port and the discharging port of the briquetting machine are monitored through the laser sensor, when foreign matter enters a monitoring area, the laser sensor sends a signal to the PLC, the PLC sends an emergency braking signal to the hydraulic motor of the briquetting machine, the briquetting machine stops running immediately, the response speed is high, the monitoring precision is high, and the safety is high. And the requirement of safe production is met.

Description

Technical Field

[0001] This utility model relates to the field of safety protection equipment for briquetting machines, and in particular to a protection system for waste briquetting machines. Background Technology

[0002] A briquetting machine is a machine that uses a specific working medium to transmit pressure and compress different raw materials into shapes. During operation, existing waste briquetting machines are prone to accidents such as personnel accidentally entering the hydraulic cylinder area, material splashing, pinching, or crushing injuries. Traditional mechanical safety devices (such as fixed guardrails and mechanical interlocking devices) suffer from slow response speeds, high mechanical device action delays, and inability to meet rapid braking requirements; they also have poor adaptability, as metal debris environments can easily interfere with the accuracy of laser sensors, leading to false alarms or missed alarms, resulting in low monitoring accuracy and failing to meet the needs of safe production. Therefore, there is an urgent need for a non-contact, high-precision safety protection system to improve the safety and adaptability of briquetting machines. Utility Model Content

[0003] The purpose of this utility model is to provide a protective system for a waste briquetting machine, which solves the technical problem that existing traditional mechanical protective devices cannot brake quickly.

[0004] To achieve the above objectives, the technical solution adopted by this utility model is as follows:

[0005] A protective system for a waste briquetting machine includes a PLC controller, a laser sensor, and a hydraulic motor for the briquetting machine. The laser sensor is respectively installed at the feed inlet and discharge outlet of the briquetting machine and is used to monitor the feed inlet and discharge outlet of the briquetting machine. The PLC controller is connected to both the laser sensor and the hydraulic motor of the briquetting machine and is used to receive signals sent by the laser sensor and send emergency braking signals to the hydraulic motor of the briquetting machine.

[0006] Furthermore, an intermediate relay is provided between the laser sensor and the PLC controller, and the intermediate relay is connected to both the laser sensor and the PLC controller.

[0007] Furthermore, the intermediate relay is used to convert the laser sensor signal into a PLC input control signal.

[0008] Furthermore, a hydraulic drive solenoid valve is provided between the hydraulic motor of the briquetting machine and the PLC controller, and the hydraulic drive solenoid valve is connected to both the hydraulic motor of the briquetting machine and the PLC controller.

[0009] Furthermore, the hydraulically driven solenoid valve is used to receive an emergency braking signal sent by the PLC controller and shut down the hydraulic system.

[0010] Furthermore, an air switch is connected to the hydraulic motor of the briquetting machine, which is used to cut off the power supply in an emergency.

[0011] This utility model, by adopting the above-mentioned technical solution, has the following beneficial effects:

[0012] The protection system of this utility model monitors the feed inlet and discharge outlet of the briquetting machine using a laser sensor. When a foreign object enters the monitoring area, the laser sensor sends a signal to the PLC controller, which then sends an emergency braking signal to the hydraulic motor of the briquetting machine. The briquetting machine stops running immediately, with a fast response speed and high monitoring accuracy, meeting the needs of safe production. Attached Figure Description

[0013] Figure 1 This is a block diagram of the protection system of this utility model.

[0014] In the attached diagram, 1-PLC controller, 2-laser sensor, 3-hydraulic motor for briquetting machine, 4-intermediate relay, and 5-hydraulic drive solenoid valve. Detailed Implementation

[0015] To make the objectives, technical solutions, and advantages of this utility model clearer, the following detailed description is provided with reference to the accompanying drawings and preferred embodiments. However, it should be noted that many details listed in the specification are merely to provide the reader with a thorough understanding of one or more aspects of this utility model, and these aspects can be achieved even without these specific details.

[0016] like Figure 1 As shown, a protective system for a waste briquetting machine includes a PLC controller 1, a laser sensor 2, and a briquetting machine hydraulic motor 3. The laser sensor 2 is installed at both the feed inlet and discharge outlet of the briquetting machine, and is used to monitor these areas. The laser sensor 2 is a 42GRP-9000-QD sensor resistant to metal debris interference. The PLC controller 1 is connected to both the laser sensor 2 and the briquetting machine hydraulic motor 3. The PLC controller 1 receives signals from the laser sensor 2 and sends emergency braking signals to the briquetting machine hydraulic motor 3. The laser sensor 2 is installed in the high-risk areas at the feed inlet and discharge outlet of the briquetting machine to emit laser beams and monitor the protected area in real time. The detection accuracy of the laser sensor 2 is ±1mm (adaptable to metal debris environments). When the PLC controller 1 receives the optical path terminal signal from the laser sensor 2, it triggers emergency braking.

[0017] In this invention, an intermediate relay 4 is provided between the laser sensor 2 and the PLC controller 1, and the intermediate relay 4 is connected to both the laser sensor 2 and the PLC controller 1. The intermediate relay 4 is used to convert the signal from the laser sensor 2 into a PLC input control signal. The installation position of the laser sensor 2 covers a 0.5m danger zone in front of the equipment and a 3m danger zone on both sides, forming a dynamic monitoring light curtain. The laser sensor 2 and the PLC controller 1 are connected via a shielded signal line to avoid electromagnetic interference. When a foreign object enters the feed or discharge port of the briquetting machine, the laser sensor 2 sends the detected signal to the intermediate relay 4, which converts the signal into a PLC input control signal and sends it to the PLC controller 1. After receiving the signal, the PLC controller 1 outputs an emergency braking command to the hydraulic motor 3 of the briquetting machine. The safety protection range of the protection system set in this invention covers a 0.5m danger zone in front of the equipment and a 3m danger zone on both sides. The laser beam of the laser sensor covers the protected area. When a foreign object intrudes and triggers an interruption of the light path, the PLC performs an emergency braking, realizing non-contact dynamic monitoring with a response time of <10ms.

[0018] In this invention, a hydraulic drive solenoid valve 5 is provided between the hydraulic motor 3 of the briquetting machine and the PLC controller 1. The hydraulic drive solenoid valve 5 is connected to both the hydraulic motor 3 and the PLC controller 1. The hydraulic drive solenoid valve 5 is used to receive an emergency braking signal sent by the PLC controller 1 and shut down the hydraulic system. The hydraulic drive solenoid valve is controlled by the output signal of the PLC controller to shut down the hydraulic system. The PLC controller 1 is linked with the hydraulic drive solenoid valve 5 through an intermediate relay 4 to realize the rapid power-off of the hydraulic motor 3 and the locking of the hydraulic system. An air switch is connected to the hydraulic motor 3 of the briquetting machine for emergency power cut-off. The output terminal of the PLC controller is connected to the hydraulic drive solenoid valve and controls the power supply to the hydraulic motor of the briquetting machine through the air switch.

[0019] Usage process

[0020] First, laser sensor 2 is installed outside the feed inlet and discharge outlet of the briquetting machine to form a monitoring light curtain covering the dangerous area. The output end of laser sensor 2 is connected to intermediate relay 4, and the contacts of intermediate relay 4 are connected to the PLC input control point. The output end of PLC is connected to hydraulic drive solenoid valve 5, and the power supply of hydraulic motor 3 of briquetting machine is controlled by air switch. Then, the laser beam of laser sensor 2 covers the preset dangerous area (feed inlet and discharge outlet of briquetting machine) in real time. When foreign objects intrude and cause the light path to be interrupted, laser sensor 2 immediately sends a signal to PLC controller 1. PLC controller 1 triggers emergency braking within 10ms by cutting off the power supply of hydraulic motor and closing hydraulic drive solenoid valve. The briquetting machine stops running until it is manually reset.

[0021] The above description is only a preferred embodiment of the present utility model. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the principle of the present utility model, and these improvements and modifications should also be considered within the protection scope of the present utility model.

Claims

1. A protective system for a waste briquetting machine, characterized in that: The device includes a PLC controller, a laser sensor, and a hydraulic motor for the briquetting machine. The laser sensor is installed at the feed inlet and discharge outlet of the briquetting machine and is used to monitor the feed inlet and discharge outlet. The PLC controller is connected to both the laser sensor and the hydraulic motor of the briquetting machine and is used to receive signals sent by the laser sensor and send emergency braking signals to the hydraulic motor of the briquetting machine.

2. The waste briquetting machine protection system according to claim 1, characterized in that: An intermediate relay is provided between the laser sensor and the PLC controller, and the intermediate relay is connected to both the laser sensor and the PLC controller.

3. The waste briquetting machine protection system according to claim 2, characterized in that: The intermediate relay is used to convert the laser sensor signal into a PLC input control signal.

4. The waste briquetting machine protection system according to claim 1, characterized in that: A hydraulic drive solenoid valve is provided between the hydraulic motor of the briquetting machine and the PLC controller. The hydraulic drive solenoid valve is connected to both the hydraulic motor of the briquetting machine and the PLC controller.

5. The waste briquetting machine protection system according to claim 4, characterized in that: The hydraulically driven solenoid valve is used to receive emergency braking signals sent by the PLC controller and shut down the hydraulic system.

6. The waste briquetting machine protection system according to claim 1, characterized in that: An air switch is connected to the hydraulic motor of the briquetting machine, which is used to cut off the power supply in an emergency.

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