Emergency stop warning protection device for monorail crane

Abstract

The utility model relates to an emergency stop warning protection device for a monorail crane, and belongs to a monorail crane protection device. Comprising a laser diffuse reflection photoelectric switch, a programmable controller, an intrinsic safety power supply, a relay control end and a relay controlled end arranged on a power line of the monorail crane, the laser diffuse reflection photoelectric switch is connected to the input end of the programmable controller, the intrinsic safety power supply is connected to the power supply end of the programmable controller, and the output end of the programmable controller is connected with a relay control end; a controlled end of the relay is arranged on a power line of the monorail crane; the laser diffuse reflection optoelectronic switch is arranged on the lower portion of the front portion of the monorail crane and faces the running front portion of the monorail crane. The device utilizes a laser diffuse reflection sensor to emit detection laser, when the detection laser passes through a detection object, a switching signal is generated to realize emergency stop control of the monorail crane, and a pedestrian infrared sensor is arranged to detect pedestrians in a week when the monorail crane is started and give an alarm.

Description

Technical Field

[0001] This utility model relates to an emergency stop warning and protection device for monorail crane locomotives, belonging to the category of monorail crane locomotive protection devices. Background Technology

[0002] Currently, monorail transportation systems are widely used in production mines across the country. The continuity and efficiency of monorail locomotive transportation have made it one of the important modes of underground transportation in coal mines. Therefore, ensuring the safety of monorail locomotive transportation is of paramount importance.

[0003] When transporting goods from the main roadway to the mining haulage roadway, a switch device is usually encountered. The rotation and closure of the switch device are crucial to the overall operation of the monorail crane. Otherwise, failure to detect in time that the switch ahead has not turned to the designated position may lead to derailment of the monorail crane, causing a major safety accident. Therefore, a monorail crane anti-reverse emergency stop protection device is required.

[0004] Furthermore, due to the dim lighting and poor visibility in the underground environment, the driver's view is obstructed when the monorail locomotive is running in the opposite direction. The locomotive driver often cannot see the situation of people in the tunnel, which poses a safety hazard of locomotive hitting people. Therefore, pedestrian detection is also required for operation warning. Summary of the Invention

[0005] This utility model provides an emergency stop warning and protection device for monorail cranes, which solves the problem of alarm and emergency stop of monorail cranes when encountering foreign objects or pedestrians.

[0006] To achieve the above objectives, the technical solution adopted by this utility model is as follows:

[0007] This utility model discloses an emergency stop warning and protection device for a monorail crane, comprising a laser diffuse reflection photoelectric switch, a programmable controller, an intrinsically safe power supply, a relay control terminal, and a relay controlled terminal installed on the power line of the monorail crane.

[0008] The signal line of the laser diffuse reflection photoelectric switch is connected to the input terminal of the programmable controller, and an emergency stop switch is connected in series on the signal line. The intrinsically safe power supply is connected to the power supply terminal of the programmable controller, and the output terminal of the programmable controller is connected to the relay control terminal.

[0009] The controlled terminal of the relay is located on the power supply line of the monorail locomotive;

[0010] The laser diffuse reflection photoelectric switch is located at the lower front of the monorail crane and faces the front of the monorail crane's operation.

[0011] According to the aforementioned emergency stop warning and protection device for monorail cranes, the programmable controller includes multiple input terminals and output terminals.

[0012] The emergency stop warning and protection device for the monorail crane also includes a reversing diffuse reflection photoelectric switch. The reversing diffuse reflection photoelectric switch is installed at the rear end of the rear traction mechanism of the monorail crane and is connected to the input terminal of the programmable controller via a cable.

[0013] The monorail crane emergency stop warning and protection device also includes a pedestrian warning device, which includes a pedestrian infrared sensor, an audio-visual control module, a warning light, and a warning speaker. The power line of the pedestrian infrared sensor is connected to an intrinsically safe power supply, and the signal end is connected to the audio-visual control module. The warning light and warning speaker are installed in the driver's position inside the monorail crane.

[0014] According to the aforementioned monorail crane emergency stop warning and protection device, the pedestrian infrared sensors are installed at the four corners of the front, rear, and rear ends of the monorail crane system, and each infrared sensor is equipped with a set of warning lights.

[0015] According to the aforementioned monorail crane emergency stop warning and protection device, the programmable controller is model FX2N-48MR, and the sound and light control module is LMD107 voice module.

[0016] The device utilizes a laser diffuse reflection sensor to emit a detection laser. When the detection light passes through the object being detected, the object reflects the light emitted by the sensor back to the receiver, generating a switching signal to achieve emergency stop control of the monorail.

[0017] At the same time, pedestrian infrared sensors are installed to detect pedestrians around the monorail crane when it starts up, so as to avoid pedestrians standing around during the start-up phase and affecting safety. Attached Figure Description

[0018] Figure 1 This is the circuit diagram for the laser diffuse reflection emergency stop of this utility model.

[0019] Figure 2 This is the pedestrian detection warning alarm circuit diagram of this utility model. Detailed Implementation

[0020] The specific contents of this utility model are described in detail below:

[0021] This utility model has two important functions: emergency stop when encountering obstacles while driving and pedestrian warning when starting.

[0022] Specifically, the emergency stop warning and protection device for monorail locomotives includes a laser diffuse reflection photoelectric switch, a programmable controller, an intrinsically safe power supply, a relay control terminal, and a relay controlled terminal installed on the power line of the monorail locomotive.

[0023] The signal line of the laser diffuse reflection photoelectric switch is connected to the input terminal of the programmable controller (PLC), and an emergency stop switch is connected in series on the signal line. The intrinsically safe power supply is connected to the power supply terminal of the PLC, and the output terminal of the PLC is connected to the relay control terminal. The controlled terminal of the relay is located on the power supply line of the monorail crane. The laser diffuse reflection photoelectric switch is located at the lower front of the monorail crane, facing the front of the monorail crane's movement. The PLC includes multiple input terminals and output terminals.

[0024] A reversing diffuse reflection photoelectric switch is also installed at the rear of the monorail crane. The reversing diffuse reflection photoelectric switch is located at the rear end of the rear traction mechanism of the monorail crane and is connected to the input terminal of the programmable controller via a cable.

[0025] In a specific embodiment, the pedestrian warning device includes a pedestrian infrared sensor, an audio-visual control module, a warning light, and a warning speaker. The power supply line of the pedestrian infrared sensor is connected to an intrinsically safe power supply, and the signal terminal is connected to the audio-visual control module. The warning light and warning speaker are located on the exterior of the monorail locomotive. The pedestrian infrared sensors are located at the four corners of the front, rear, and rear ends of the monorail locomotive system, and each infrared sensor corresponds to a set of warning lights.

[0026] The programmable controller used in this device is model FX2N-48MR, and the audio-visual control module is LMD107 voice module.

[0027] This device uses a laser diffuse reflection photoelectric switch installed in front of the monorail crane locomotive, which is then connected in series with the locomotive's emergency stop integrated protection device. As the locomotive moves, the laser diffuse reflection device continuously monitors the track ahead. If the track is normal, there is no feedback signal, and the locomotive continues to travel normally. If an obstacle or other foreign object is detected on the track ahead, the device receives the signal and immediately triggers the emergency stop signal in the monorail crane locomotive's emergency stop integrated protection device, stopping the locomotive. Travel can only resume after the track has closed, ensuring the safety of the locomotive's operation.

[0028] To ensure the reliability of the device's operation and eliminate error detection, two sets of laser diffuse reflection photoelectric switches are installed on the locomotive. Both sets will activate only when both detect a foreign object simultaneously, preventing the locomotive from stopping unnecessarily if only one set of laser diffuse reflection devices triggers the emergency stop mechanism when passing through a track gap. When both sets of laser diffuse reflection photoelectric switches receive the reflected light, the laser diffuse reflection device will directly activate the emergency stop mechanism to halt the locomotive's operation; when only one set of laser diffuse reflection devices receives the light, the monorail locomotive will operate normally.

[0029] Four far-infrared human body sensors are designed and installed on the top of the monorail crane cab, facing the left front, right front, left rear, and right rear respectively. Each sensor has a detection angle greater than 90 degrees and a detection distance greater than 12 meters. These four sensors can monitor personnel outside the locomotive in real time with 360-degree coverage. When personnel approach the locomotive, an audible and visual alert is issued, reminding the locomotive driver and those outside to be aware of the locomotive's operation. The project's innovation lies in its ability to achieve 360-degree real-time monitoring of personnel outside the locomotive and issue audible and visual alerts. This allows for early warning of personnel approaching the locomotive, effectively improving the safety of locomotive transportation.

[0030] The original purpose of the emergency stop warning and protection device for monorail cranes is to avoid potential obstruction by foreign objects and personnel injury accidents during the operation of monorail cranes. When the driver cannot judge whether the track is closed by the naked eye from a distance, the device is used to make advance predictions and identifications.

[0031] This device can respond quickly and accurately assess the track conditions ahead. Once a danger signal is detected, it can immediately activate the emergency stop device to bring the locomotive to a safe state. In actual operation, this device can prevent locomotive collisions caused by obstacles in front, and also eliminate the need for personnel to be checked or maneuvered around the locomotive when it starts, thus improving the safety and reliability of transportation.

Claims

1. A monorail crane locomotive emergency stop warning and protection device, characterized in that, It includes a laser diffuse reflection photoelectric switch, a programmable controller, an intrinsically safe power supply, a relay control terminal, and a relay controlled terminal installed on the power line of the monorail locomotive; The signal line of the laser diffuse reflection photoelectric switch is connected to the input terminal of the programmable controller, and an emergency stop switch is connected in series on the signal line. The intrinsically safe power supply is connected to the power supply terminal of the programmable controller, and the output terminal of the programmable controller is connected to the relay control terminal. The controlled terminal of the relay is located on the power supply line of the monorail locomotive; The laser diffuse reflection photoelectric switch is located at the lower front of the monorail crane and faces the front of the monorail crane's operation.

2. The emergency stop warning and protection device for monorail cranes according to claim 1, characterized in that, A programmable controller includes multiple input terminals and output terminals.

3. The emergency stop warning and protection device for monorail cranes according to claim 1, characterized in that, It also includes a reversing diffuse reflection photoelectric switch, which is installed at the rear end of the traction mechanism of the monorail locomotive and is connected to the input terminal of the programmable controller via a cable.

4. The emergency stop warning and protection device for monorail cranes according to claim 2, characterized in that, It also includes a pedestrian warning device, which includes a pedestrian infrared sensor, an audio-visual control module, a warning light, and a warning speaker. The power line of the pedestrian infrared sensor is connected to an intrinsically safe power supply, and the signal end is connected to the audio-visual control module. The warning light and warning speaker are installed in the driver's position inside the monorail crane.

5. The emergency stop warning and protection device for monorail cranes according to claim 4, characterized in that, The pedestrian infrared sensors are installed at the four corners of the front, rear, and rear ends of the monorail locomotive system, and each infrared sensor is equipped with a set of warning lights.

6. The emergency stop warning and protection device for monorail cranes according to claim 5, characterized in that, The programmable controller is model FX2N-48MR, and the audio-visual control module is LMD107 voice module.

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