Monorail crane protection device

By installing transmitters and receivers on the monorail crane on the roof, and using transistors and relays to control monorail crane parking, the safety problem of monorail crane when the roof is off-layer is solved, timely parking and safety reminders are achieved, accidents are avoided, and transportation safety is improved.

CN223213696UActive Publication Date: 2025-08-12HUAINAN MINING IND GRP
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Patent Information

Application Number
CN202422451227.X
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2024-10-10
Publication Date
2025-08-12
Estimated Expiration
2034-10-10

AI Technical Summary

Technical Problem

In the prior art, monorail lifting lacks timeliness when off-layer roof panels, resulting in insufficient transportation safety and inability to stop in time, making it easy to cause accidents.

Method used

The transmitter is installed on the top plate, and the out-of-layer signal control circuit is used to cooperate with the receiver on the monorail crane to control the operation of the monorail crane by using transistors and relays. When the top plate desorption exceeds the safety threshold, a wireless signal is transmitted to stop the monorail crane, and the driver is reminded through the alarm box to set up a self-holding circuit to ensure safety.

Benefits of technology

It effectively avoids monorail crane drop accidents caused by roof destratification, improves the safety of monorail crane transportation and driver safety, and the device performance is stable, easy to maintain and has strong applicability.

✦ Generated by Eureka AI based on patent content.

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Abstract

The utility model provides a monorail crane protection device, which belongs to the field of coal mine fully mechanized coal mining machinery, and comprises a separation layer signal control circuit, a monorail crane control circuit, an emitter and a receiver, the separation layer signal control circuit comprises a triode VT and a relay ZJ, the monorail crane control circuit comprises a start button QA, a relay K and a relay FJ, the base electrode of the triode VT is connected with a control signal, and the emitter is connected with the receiver. A collector electrode of the triode VT is connected with a coil of the relay ZJ in series and then connected with a positive electrode of a power supply, an emitting electrode of the triode VT is connected with a negative electrode of the power supply, and a normally open contact ZJ1 of the relay ZJ is connected with the positive electrode and the negative electrode of the power supply after being connected with the emitter in series. The other end of the start button QA is connected in series with a normally closed contact FJ2 of a relay FJ and then connected with one end of a coil of a relay K, the other end of the relay K is connected with the cathode of the power supply, and the coil of the relay FJ is connected in series with a receiver and then connected with the anode and the cathode of the power supply; the monorail crane falling accident caused by roadway roof separation is avoided, and the transportation safety of the monorail crane is improved.
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Description

Technical Field

[0001] The utility model relates to the technical field of coal mine fully mechanized mining electromechanical equipment, in particular to a monorail crane protection device. Background Art

[0002] Due to the shift to modern coal mine production methods, diesel monorail cranes have become the primary means of transportation in mines. As mining depth increases, surrounding rock pressure increases, making roof management increasingly difficult. Roof delamination can cause monorail cranes to fall during transportation. To improve the safety of monorail crane operations, existing technologies have designed online roof delamination monitoring systems for roadways where monorail cranes operate. When delamination occurs, monitoring data is transmitted to the surface system in real time via an underground base station. Using the mine's comprehensive information platform, an over-alert message is sent to the relevant responsible personnel via SMS. While this monitoring system automatically monitors and analyzes underground roadway roof pressure in complex environments, improving the accuracy, continuity, and long-term nature of monitoring, it lacks timeliness for the safe operation of monorail cranes. The process from data collection, transmission, and push notification to arranging for on-site processing by relevant responsible personnel is complex and tedious. Monorail crane operators are unable to obtain roof delamination warning information immediately and take safe and effective evasive measures. In serious cases, this can lead to electromechanical transportation safety accidents. Utility Model Content

[0003] The technical problem to be solved by the utility model is how to avoid the accident of monorail crane falling due to separation of the tunnel roof, and further improve the safety of monorail crane transportation.

[0004] The utility model solves the above technical problems through the following technical solutions: a monorail crane protection device, comprising: a separation signal control circuit, a monorail crane control circuit, a transmitter, and a receiver. The separation signal control circuit comprises a transistor VT and a relay ZJ. The monorail crane control circuit comprises a start button QA, a relay K, and a relay FJ. The base of the transistor VT is connected to the control signal, the collector of the transistor VT is connected in series with the coil of the relay ZJ and then connected to the positive pole of the power supply, the emitter of the transistor VT is connected to the negative pole of the power supply, the normally open contact ZJ1 of the relay ZJ is connected in series with the transmitter and then connected to the positive and negative poles of the power supply, one end of the start button QA is connected to the positive pole of the power supply, the other end of the start button QA is connected in series with the normally closed contact FJ2 of the relay FJ and then connected to one end of the coil of the relay K, the other end of the relay K is connected to the negative pole of the power supply, and the coil of the relay FJ is connected in series with the receiver and then connected to the positive and negative poles of the power supply.

[0005] The utility model installs a transmitter on the roof, the transmitter receives the separation signal through the separation signal control circuit, and installs a receiver on the monorail crane locomotive. When the roof is separated and the separation value exceeds the safety threshold, the transistor VT in the separation signal control circuit is turned on, so that the circuit where the transmitter is located is turned on, the transmitter transmits a wireless signal, and when the receiver receives the wireless signal, the relay FJ is actuated, the normally closed contact FJ2 of the relay FJ is disconnected, the monorail crane control circuit is not turned on, and the monorail crane stops running. The defect of the traditional function of only displaying the separation data but not being able to stop the monorail crane is overcome, and the monorail crane falling accident caused by the separation of the tunnel roof is avoided, the safety of the monorail crane transportation and the safety of the monorail crane driver are guaranteed, and the monorail crane is protected.

[0006] Preferably, a delamination instrument is further included, and the base of the transistor VT is connected to the signal output terminal of the delamination instrument.

[0007] Preferably, the model of the delamination instrument is KJ24-FW, the power interface of the delamination instrument is connected to a 12V DC power supply, and the signal output terminal of the delamination instrument is connected to a buzzer.

[0008] Preferably, an alarm box is further included, which is connected in series with the normally open contact FJ1 of the relay FJ and then connected to the positive and negative poles of the power supply.

[0009] Preferably, the alarm box is a voice alarm box, which is located on a monorail crane, and the model of the voice alarm box is KXB12.

[0010] Preferably, the monorail crane control circuit also includes a self-holding circuit, which is the normally open contact K1 of the relay K, and the normally open contact K1 is connected in parallel to both ends of the start button QA.

[0011] Preferably, the monorail crane control circuit also includes a stop button TA, one end of the stop button TA is connected to the other end of the start button QA, and the other end of the stop button TA is connected to one end of the normally closed contact FJ2 of the relay FJ.

[0012] Preferably, the transmitter is located on the top plate of the tunnel, the model of the transmitter is FYF5, the receiver is located on the monorail crane, the model of the receiver is KTW, and wireless signals are transmitted between the transmitter and the receiver.

[0013] Preferably, the model of the transistor VT is S9013.

[0014] Preferably, the power supply is a 12V DC power supply.

[0015] The advantages provided by the present invention are:

[0016] 1. The utility model installs a transmitter on the roof, and the transmitter receives the separation signal through the separation signal control circuit. A receiver is installed on the monorail crane locomotive. When the roof is separated and the separation value exceeds the safety threshold, the transistor VT in the separation signal control circuit is turned on, so that the circuit where the transmitter is located is turned on, and the transmitter transmits a wireless signal. When the receiver receives the wireless signal, the relay FJ is actuated, and the normally closed contact FJ2 of the relay FJ is disconnected, the monorail crane control circuit is not turned on, and the monorail crane stops running. The defect of the traditional method of only displaying the separation data function and not being able to stop the monorail crane is overcome, and the monorail crane falling accident caused by separation of the tunnel roof is avoided, the safety of the monorail crane transportation and the safety of the monorail crane driver are ensured, and the monorail crane is protected.

[0017] 2. The utility model connects the alarm box and the normally open contact FJ1 of the relay FJ in series in a loop. When the relay FJ is actuated, the normally open contact FJ1 is closed and the alarm box sounds an alarm to remind the monorail crane driver to take safety precautions.

[0018] 3. The utility model sets a self-holding circuit in the monorail crane control circuit. When the monorail crane is operating normally, the normally open contact K1 of the relay K is closed as a self-holding point, further ensuring the safety of the monorail crane operation.

[0019] 4. The protective device of the utility model has stable performance, is safe, reliable, convenient, easy to maintain and has strong applicability, and can be used with various types of monorail cranes. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 A structural diagram of a monorail crane protection device provided in an embodiment of the present utility model;

[0021] Figure 2 A circuit diagram of a monorail crane protection device provided in an embodiment of the present utility model;

[0022] Figure 3 Another circuit diagram of the monorail crane protection device provided in an embodiment of the present utility model;

[0023] Figure 4 Another circuit diagram of the monorail crane protection device provided in an embodiment of the present utility model;

[0024] Figure 5 Another circuit diagram of the monorail crane protection device provided in an embodiment of the present utility model;

[0025] Figure 6 Another circuit diagram of the monorail crane protection device provided in an embodiment of the present utility model. DETAILED DESCRIPTION

[0026] To make the purpose, technical solutions, and advantages of the present invention more clearly understood, the following describes the technical solutions of the present invention in a clear and complete manner, in conjunction with specific embodiments and with reference to the accompanying drawings. It is apparent that the embodiments described are only a portion of the embodiments of the present invention, not all of them. All other embodiments derived by persons of ordinary skill in the art based on the embodiments of the present invention without creative effort are intended to fall within the scope of protection of the present invention.

[0027] like Figure 1-6 As shown, this embodiment provides a monorail crane protection device, including: a separation signal control circuit, a monorail crane control circuit, a transmitter, a receiver, and an alarm box. The separation signal control circuit includes a transistor VT and a relay ZJ. The monorail crane control circuit includes a start button QA, a stop button TA, a relay K, and a relay FJ. The base of the transistor VT is connected to the signal output end of the separation meter, the collector of the transistor VT is connected in series with the coil of the relay ZJ and then connected to the positive pole of the power supply, the emitter of the transistor is connected to the negative pole of the power supply, and the normally open contact ZJ1 of the relay ZJ is connected in series with the transmitter and then connected to the positive pole of the power supply. The positive and negative poles, one end of the start button QA is connected to one end of the normally open contact of relay K and then to the positive pole of the power supply, the other end of the start button QA is connected to the other end of the normally open contact K1 of relay K and one end of the stop button TA, the other end of the stop button TA is connected to one end of the normally closed contact of relay FJ, the other end of the normally closed contact FJ2 of relay FJ is connected in series with the coil of relay K and then connected to the negative pole of the power supply, the coil of relay FJ is connected in series with the receiver and then connected to the positive and negative poles of the power supply, the normally open contact FJ1 of relay FJ is connected in series with the alarm box and then connected to the positive and negative poles of the power supply.

[0028] The model of the transistor VT is S9013. The power supply is a 12V DC power supply, the model of the separation instrument is KJ24-FW, the power interface of the separation instrument is connected to the 12V DC power supply, and the signal output terminal of the separation instrument is connected to a buzzer.

[0029] The transmitter is a wireless transmitter, the model of which is FYF5(A); the receiver is a wireless receiver, the model of which is KTW(A); the alarm box is a voice alarm box, the model of which is KXB12(A).

[0030] Working principle:

[0031] The receiver and alarm box are installed on the monorail crane, and the separation signal control circuit and transmitter are installed on the tunnel roof. The separation meter and the separation signal control circuit share the intrinsically safe 12V power supply. When the separation value is less than the safety threshold of 40mm, the third-level warning is not reached. There is a weak AC signal on the base of the transistor VT, which is lower than the 0.5V conduction voltage of the PN junction between the base and emitter of the transistor. The transistor VT is in the cut-off state, and no current flows through the coil of the relay ZJ. The relay ZJ does not operate. At this time, it indicates that the roof separation value is within the safety threshold range and the monorail crane can operate normally.

[0032] When the roof separation value is greater than the safety threshold of 40mm and reaches the third level warning or above, the buzzer on the roof separation meter will sound an alarm. At this time, there is a DC voltage of about 3V between the base and emitter of the transistor VT, which is greater than the 0.5V conduction voltage of the emitter PN junction. The emitter is forward biased and the collector is reverse biased. The transistor VT is in the amplified conduction state, the coil of relay ZJ is energized and turned on, relay ZJ is activated, and the normally open contact of relay ZJ connected in series with the transmitter is closed. The transmitter sends a signal, the receiver receives the signal, relay FJ is activated, and the coil of relay FJ connected in series with the receiver is energized, the normally open contact FJ1 of relay FJ is closed, and the alarm box connected in series with the normally open contact FJ1 is energized and sounds an alarm. At the same time, the normally closed contact FJ2 in series with the monorail crane control circuit is disconnected, and the monorail crane stops running, avoiding the monorail crane falling accident due to tunnel roof separation and ensuring the safety of monorail crane transportation.

[0033] When the local top plate is processed, the transistor VT is in the cut-off state, the coil of relay ZJ loses power and stops moving, the normally open contact ZJ1 of relay ZJ is disconnected, the transmitter stops transmitting wireless signals, and when the receiver does not receive any signal, relay FJ loses power and stops moving, the normally open contact FJ1 of relay FJ is disconnected, the alarm box stops alarming, the normally closed contact FJ2 of relay FJ is closed, the monorail crane control circuit is turned on, and the monorail crane resumes normal operation. Among them, when the start button QA is pressed, the coil of relay K in the monorail crane control circuit is energized, the normally open contact K2 of relay K is connected in series with the monorail crane motor in the same circuit, the normally open contact K2 is closed, the monorail crane runs, and the normally open contact K1 of relay K is closed as a self-protection point. When the stop button TA is pressed, relay K in the monorail crane control circuit loses power and the monorail crane stops running.

[0034] The utility model utilizes the existing roof separation meter in the mine for modification, by installing a transmitter on the roof, the transmitter is connected to the roof separation meter through a separation signal control circuit, and a receiver is installed on the monorail crane locomotive. When the roof separation occurs and the separation value exceeds the safety threshold, the warning information is normally transmitted to the ground system. At the same time, the triode VT in the separation signal control circuit is turned on, so that the circuit where the transmitter is located is turned on, the transmitter transmits a wireless signal, and when the receiver receives the wireless signal, the relay FJ is actuated, so that the normally open contact FJ1 of the relay FJ is closed, the alarm box sounds an alarm, the normally closed contact FJ2 of the relay FJ is disconnected, the monorail crane control circuit is not turned on, and the monorail crane stops running, overcoming the defects of the traditional function of only displaying separation data and not being able to stop, avoiding the monorail crane falling accident caused by tunnel roof separation, ensuring the safety of monorail crane transportation and the safety of the monorail crane driver, and playing a protective role for the monorail crane. The protection device has stable performance, is safe, reliable, convenient, easy to maintain and has strong applicability, and can be used in conjunction with various models of monorail cranes.

[0035] The monorail crane protection device of the utility model has been successfully promoted and applied in coal mining working faces such as the 1421(3)W and 1222(1) working faces of Zhangji Mine of Huainan Mining Group, and has been unanimously recognized by the users. The device is easy to use, simple in structure, and has a wide range of uses. Taking into account the economic and social benefits, it can create safety benefits of more than 1 million yuan each year.

[0036] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit the same. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that the technical solutions described in the aforementioned embodiments can still be modified, or some of the technical features thereof can be replaced by equivalents. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the various embodiments of the present invention.

Claims

1. A monorail crane protection device, characterized by: include: The separation signal control circuit, the monorail crane control circuit, the transmitter and the receiver. The separation signal control circuit includes a transistor VT and a relay ZJ. The monorail crane control circuit includes a start button QA, a relay K and a relay FJ. The base of the transistor VT is connected to the control signal, the collector of the transistor VT is connected in series with the coil of the relay ZJ and then connected to the positive pole of the power supply, the emitter of the transistor VT is connected to the negative pole of the power supply, the normally open contact ZJ1 of the relay ZJ is connected in series with the transmitter and then connected to the positive and negative poles of the power supply, one end of the start button QA is connected to the positive pole of the power supply, the other end of the start button QA is connected in series with the normally closed contact FJ2 of the relay FJ and then connected to one end of the coil of the relay K, the other end of the relay K is connected to the negative pole of the power supply, and the coil of the relay FJ is connected in series with the receiver and then connected to the positive and negative poles of the power supply.

2. The monorail crane protection device according to claim 1, characterized in that: The utility model also includes a delamination instrument, and the base of the transistor VT is connected to the signal output terminal of the delamination instrument.

3. The monorail crane protection device according to claim 2, characterized in that: The model of the delamination instrument is KJ24-FW. The power interface of the delamination instrument is connected to a 12V DC power supply, and the signal output terminal of the delamination instrument is connected to a buzzer.

4. The monorail crane protection device according to claim 1, characterized in that: The device also includes an alarm box, which is connected in series with the normally open contact FJ1 of the relay FJ and then connected to the positive and negative poles of the power supply.

5. The monorail crane protection device according to claim 4, characterized in that: The alarm box is a voice alarm box, which is located on the monorail crane. The model of the voice alarm box is KXB12.

6. The monorail crane protection device according to claim 1, characterized in that: The monorail crane control circuit also includes a self-holding circuit, which is a normally open contact K1 of the relay K. The normally open contact K1 is connected in parallel to both ends of the start button QA.

7. The monorail crane protection device according to claim 1 or 6, characterized in that: The monorail crane control circuit also includes a stop button TA, one end of the stop button TA is connected to the other end of the start button QA, and the other end of the stop button TA is connected to one end of the normally closed contact FJ2 of the relay FJ.

8. The monorail crane protection device according to claim 1, characterized in that: The transmitter is located on the top plate of the tunnel, and the model of the transmitter is FYF5. The receiver is located on the monorail crane, and the model of the receiver is KTW. Wireless signals are transmitted between the transmitter and the receiver.

9. The monorail crane protection device according to claim 1, characterized in that: The model of the transistor VT is S9013.

10. The monorail crane protection device according to claim 1, characterized in that: The power supply is a 12V DC power supply.