A cage car position detection device

Abstract

This utility model relates to the field of mine hoisting and transportation safety, and discloses a cage-type mine car obstruction position detection device, including an in-cage detection unit. The in-cage detection unit includes an in-cage power supply and at least two sets of infrared gratings. The in-cage power supply is installed inside the cage to power the equipment inside the cage. The two sets of infrared gratings are respectively installed on the entry and exit sides inside the cage to detect whether the mine car is located within a set obstruction safety area. A wireless transmission unit is also included, comprising an in-cage wireless transmitting module and an external wireless receiving module. This utility model uses infrared gratings for detection, enabling non-contact detection, eliminating mechanical wear, providing strong anti-interference capabilities, and extending service life. It is suitable for the harsh working conditions inside the cage. Simultaneously, the wireless transmission module enables signal transmission between the inside of the cage and the signal room, completely avoiding the cumbersome and easily damaged signal cables laid inside the shaft, making installation and maintenance much simpler.

Description

Technical Field

[0001] This utility model relates to the field of mine hoisting and transportation safety, and in particular to a cage mine car obstruction position detection device. Background Technology

[0002] In the mining process, shaft hoisting is a crucial link connecting the underground and the surface. Mine cars are transported up and down in the shaft via cages. If the mine car is not stopped in the preset safe position (i.e., the blocking position) in the cage, it may move or break out during hoisting, which can easily cause serious safety accidents such as cage jamming or car falling, posing a great threat to the safety of personnel and equipment.

[0003] Currently, most common methods for detecting the position of mine cars inside cages use mechanical limit switches or contact-type travel switches. These devices have significant drawbacks: First, as contact-based detection methods, they are prone to jamming, contact oxidation, or wear in the harsh environment of high vibration, humidity, and dust during cage operation, leading to decreased reliability, high false alarm rates, and short lifespan. Second, installation and maintenance must be carried out inside the cage and shaft, which is inconvenient and dangerous. Furthermore, traditional detection methods often rely on drag cables or sliding contact lines for signal transmission, which carries the risk of cable wear and breakage, resulting in unstable signal transmission.

[0004] Therefore, there is an urgent need for a non-contact, highly reliable, easy-to-install and maintain, and stable wireless signal transmission cage car obstruction position detection device to fundamentally eliminate safety hazards caused by improper mine car positioning. Utility Model Content

[0005] To overcome the above shortcomings, this utility model provides a cage mine car obstruction position detection device, which aims to improve the existing contact detection technology. In harsh environments, contact detection is prone to mechanism jamming, contact oxidation or wear, resulting in decreased reliability, high false alarm rate and short life. Installation and maintenance need to be carried out inside the cage and shaft, which is inconvenient and dangerous. Its detection method relies on drag cables or sliding contact lines for signal transmission, which poses the risk of cable wear and breakage and unstable signal transmission.

[0006] To achieve the above objectives, this utility model adopts the following technical solution: a cage mine car obstruction position detection device, comprising... The in-can detection unit includes an in-can power supply and at least two sets of infrared gratings. The in-can power supply is installed inside the cage to power the equipment inside the cage. The two sets of infrared gratings are respectively installed on the inbound and outbound sides inside the cage to detect whether the mine car is located within the set safe zone for stopping the car. The wireless transmission unit includes an in-tank wireless transmitting module and an out-of-tank wireless receiving module. The in-tank wireless transmitting module is electrically connected to the infrared grating and is used to receive grating status signals and transmit them wirelessly. The out-of-tank wireless receiving module is installed in the wellhead signal room and wirelessly paired with the in-tank wireless transmitting module. It is used to receive status signals and output switch signals. An external alarm unit is provided, which includes an audible and visual alarm. The audible and visual alarm is electrically connected to the output contact of the external wireless receiving module. When the external wireless receiving module receives a signal indicating that the mine car's position is abnormal, it drives the audible and visual alarm to sound.

[0007] As a further description of the above technical solution: The power source inside the tank is a DC24V battery, which is installed in a stainless steel sealed enclosure, and its output interface uses an aviation plug.

[0008] As a further description of the above technical solution: The infrared grating consists of two sets, both powered by DC24V. One set of the infrared grating is installed near the cage entry end, and the other set is installed near the cage exit end.

[0009] As a further description of the above technical solution: There are two external wireless receiving modules. The two external wireless receiving modules are respectively installed in the upper mine car horizontal signal room and the lower mine car horizontal signal room. Their power supply is controlled by the cage position signal. The corresponding external wireless receiving module is powered on only when the cage is stopped at the horizontal position.

[0010] As a further description of the above technical solution: The external wireless receiver module is equipped with a set of normally open contacts and a set of normally closed contacts.

[0011] As a further description of the above technical solution: The normally closed contact is connected in series in the start signal ringing circuit of the hoist. When the mine car is in an abnormal position, the normally closed contact opens, preventing the start signal from being sent.

[0012] As a further description of the above technical solution: The normally open contact is connected in series with the control circuit of the audible and visual alarm. When the mine car is in an abnormal position, the normally open contact closes, triggering the audible and visual alarm.

[0013] As a further description of the above technical solution: Two audible and visual alarms are provided, which are respectively installed in the upper mine car horizontal signal room and the lower mine car horizontal signal room, and are powered by AC220V.

[0014] This utility model has the following beneficial effects: 1. In this utility model, infrared grating is used for detection, which can realize non-contact detection, no mechanical wear, strong anti-interference ability, long service life, and is suitable for harsh working conditions inside the cage. At the same time, the wireless transmission module realizes the signal transmission between the cage and the signal room, which completely avoids the cumbersome laying of signal cables in the shaft and the problem of easy cable damage, making installation and maintenance simpler.

[0015] 2. In this utility model, the mine car position status is interlocked with the hoist start signal for safety. When the mine car position is abnormal, the start command cannot be issued, which technically ensures safety and eliminates human error. The power supply of the receiving module is controlled by the tank position signal to realize directional alarm. The alarm target is clear, which makes it easy for the signalman to quickly locate and handle the problem. The tank uses an independent power supply, which is not affected by the fluctuation of the underground power grid. The whole device has a simple structure and reliable links, which greatly improves the overall safety of the system. Attached Figure Description

[0016] Figure 1 This is a flowchart illustrating a cage mine car obstruction position detection device proposed in this utility model; Figure 2 The circuit diagram inside the cage of the mine car blocking position detection device proposed in this utility model is shown. Figure 3 The present invention provides a circuit diagram of the power supply for the horizontal signal control of a cage mine car blocking position detection device. Figure 4 The present invention provides a circuit diagram of the horizontal signal control power supply for a cage mine car blocking position detection device.

[0017] Legend: 1. Internal power supply; 2. Infrared grating; 3. Internal wireless transmitter module; 4. External wireless receiver module; 5. Audible and visual alarm. Detailed Implementation

[0018] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0019] Reference Figures 1-4 One embodiment of this utility model provides: a cage mine car obstruction position detection device, comprising... The tank-in-the-can detection unit includes a tank-in-the-can power supply 1 and at least two sets of infrared gratings 2. The tank-in-the-can power supply 1 is installed inside the tank cage and is used to power the equipment inside the tank. The tank-in-the-can power supply 1 is a DC24V / 100AH ​​battery and is installed in a stainless steel sealed enclosure. Its output interface adopts an aviation plug.

[0020] Two sets of infrared gratings 2 are installed inside the cage on the inbound and outbound sides respectively via brackets. They are used to detect whether the mine car is located within the set safe zone for stopping the car. The height of the beams is level with the axle or a specific part of the car body to ensure that the mine car does not block the two beams at the same time only when it stops at the preset stopping position. There are two sets of infrared gratings 2, both powered by DC24V. One set of infrared gratings 2 is installed near the inbound end of the cage, and the other set of infrared gratings 2 is installed near the outbound end of the cage. The normal stopping position of the mine car should be between the two sets of infrared gratings 2.

[0021] The wireless transmission unit includes an in-tank wireless transmitting module 3 and an external wireless receiving module 4. The in-tank wireless transmitting module 3 is installed inside the tank cage and is electrically connected to the infrared grating 2. It is used to receive grating status signals and transmit them wirelessly. The external wireless receiving module 4 is installed in the wellhead signal room and wirelessly paired with the in-tank wireless transmitting module 3. It is used to receive status signals and output switch signals.

[0022] The external alarm unit includes two audible and visual alarms 5, which are installed in the upper mine car horizontal signal room and the lower mine car horizontal signal room, respectively. They are powered by AC220V and are electrically connected to the output contacts of the external wireless receiving module 4. When the external wireless receiving module 4 receives a signal that the mine car position is abnormal, it will activate the audible and visual alarms 5.

[0023] There are two external wireless receiver modules 4, which are installed in the upper mine car horizontal signal room and the lower mine car horizontal signal room, respectively. Their power supply is controlled by the cage position signal. The corresponding external wireless receiver module 4 is powered on only when the cage is stopped at the horizontal level. The power supply of the external wireless receiver module 4 is controlled by the cage position signal indicating whether the cage is stopped at the horizontal level. The external wireless receiver module 4 has a set of normally open contacts and a set of normally closed contacts. The normally closed contacts are connected in series in the hoist start signal bell circuit. When the mine car position is abnormal, the normally closed contacts open to prevent the start signal from being sent. The normally open contacts are connected in series with the control circuit of the audible and visual alarm 5. When the mine car position is abnormal, the normally open contacts close to trigger the audible and visual alarm 5.

[0024] Working principle: Taking the cage stopped at the same level as the upper mine car as an example, after the mine car is pushed into the cage, the signalman operates the car handling equipment. After the car handling is completed, the device starts. If the mine car is in the correct position, the two infrared gratings 2 beams are unobstructed, the wireless transmitting module 3 inside the cage does not output an alarm signal, and the wireless receiving module 4 outside the cage at the same level as the upper mine car is powered on. Its internal relay does not operate, the normally closed contact closes to allow the start signal to be issued, and the normally open contact opens the audible and visual alarm 5 to not sound. The signalman can then issue the start signal normally.

[0025] If a mine car fails to reach its designated position or is excessively impacted, obstructing any light grid, the wireless transmitter module 3 inside the tank will immediately issue an alarm signal. Upon receiving the signal, the external wireless receiver module 4 at the same level as the mine car will activate its internal relay, causing the normally closed contact to open and disconnect the start-up signal circuit, rendering the bell button ineffective. The normally open contact will then close, activating the audible and visual alarm 5 circuit, emitting a piercing flash and a loud alarm sound to alert the signalman at that level to immediately check and address the position of the mine car inside the tank. Normal hoisting operations can only resume once the alarm is deactivated.

[0026] Additionally, it should be noted that components not described in detail in this article are existing technologies.

[0027] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A device for detecting the obstruction position of a cage mine car, characterized in that: include The in-can detection unit includes an in-can power supply (1) and at least two sets of infrared gratings (2). The in-can power supply (1) is installed inside the cage to supply power to the equipment inside the cage. The two sets of infrared gratings (2) are installed on the inbound side and the outbound side inside the cage to detect whether the mine car is located within the set safe zone for stopping the car. The wireless transmission unit includes an in-tank wireless transmitting module (3) and an out-of-tank wireless receiving module (4). The in-tank wireless transmitting module (3) is electrically connected to the infrared grating (2) and is used to receive the grating status signal and transmit it wirelessly. The out-of-tank wireless receiving module (4) is installed in the wellhead signal room and wirelessly paired with the in-tank wireless transmitting module (3) to receive the status signal and output the switch signal. The external alarm unit includes an audible and visual alarm (5), which is electrically connected to the output contact of the external wireless receiving module (4). When the external wireless receiving module (4) receives a signal that the mine car is not in a normal position, it drives the audible and visual alarm (5) to sound an alarm.

2. The cage mine car obstruction position detection device according to claim 1, characterized in that: The power source (1) inside the tank is a DC24V battery, which is installed in a stainless steel sealed box and its output interface uses an aviation plug.

3. The cage mine car obstruction position detection device according to claim 1, characterized in that: The infrared grating (2) consists of two sets, both powered by DC24V. One set of the infrared grating (2) is installed near the cage entry end, and the other set of the infrared grating (2) is installed near the cage exit end.

4. The cage mine car obstruction position detection device according to claim 1, characterized in that: There are two external wireless receiving modules (4). The two external wireless receiving modules (4) are installed in the upper mine car horizontal signal room and the lower mine car horizontal signal room respectively. Their power supply is controlled by the cage position signal. The corresponding external wireless receiving module (4) is powered on only when the cage stops at the horizontal position.

5. The cage mine car obstruction position detection device according to claim 1, characterized in that: The external wireless receiver module (4) is equipped with a set of normally open contacts and a set of normally closed contacts.

6. The cage mine car obstruction position detection device according to claim 5, characterized in that: The normally closed contact is connected in series in the start signal ringing circuit of the hoist. When the mine car is in an abnormal position, the normally closed contact opens, preventing the start signal from being sent.

7. The cage mine car obstruction position detection device according to claim 5, characterized in that: The normally open contact is connected in series with the control circuit of the audible and visual alarm (5). When the mine car is in an abnormal position, the normally open contact closes, triggering the audible and visual alarm (5) to sound an alarm.

8. The cage mine car obstruction position detection device according to claim 1, characterized in that: Two audible and visual alarms (5) are provided. The two audible and visual alarms (5) are installed in the upper mine car horizontal signal room and the lower mine car horizontal signal room respectively, and are powered by AC220V.

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