Coal mine switch work recorder

Abstract

The utility model belongs to the technical field of switch monitoring, and aims to solve the problem that the action times of an isolation change-over switch and a vacuum contactor and the illegal operation of an operator cannot be monitored. The coal mine switch working recorder comprises an action frequency input circuit, a travel switch I, a travel switch II and a PLC (Programmable Logic Controller), action signals of the travel switch I and the travel switch II are accessed to an action frequency input circuit of the PLC controller and are used for recording the action frequency of the isolation change-over switch; and a normally open contact of a vacuum contactor of the starter is connected to an action frequency input circuit of the PLC and is used for recording the action frequency of the vacuum contactor. The device can monitor the use times of the isolation change-over switch and the vacuum contactor and judge the service life; and meanwhile, whether an operator performs violation operation or not can be monitored according to a built-in clock of the PLC.

Description

TECHNICAL FIELD

[0001] The utility model belongs to switch monitoring technical field, concretely relates to a coal mine switch work recorder. BACKGROUND

[0002] Various starters, feedings and switches are applied very much in coal mine underground, these switches control various mechanical and electrical equipment on the mine, such as belt conveyor, scraper conveyor and so on. These devices are all specific requirements when operating, such as should be jogged before starting, and then start after confirming that there is no problem, but sometimes some employees do not obey these regulations when operating, and nobody knows as long as there is no accident, only the trip number, the closing number, the fault reason and the like are recorded in the switch.

[0003] The mechanical life of the isolating reversing switch is 6000 times, and the electrical life of the vacuum contactor is 60,000 times. After their life reaches, their performance is not very reliable, but the previous technology cannot record their action times, and can only be replaced after damage, which will lead to fault and affect the normal operation of the equipment.

[0004] In addition, during the operation of the starter, it is generally required to be jogged before starting formally, but some employees directly start without the jogging procedure, and the monitoring for this irregular operation is also lacking at present. CONTENT OF THE UTILITY MODEL

[0005] The utility model discloses a coal mine switch work recorder to solve at least one technical problem existing in the prior art.

[0006] The utility model discloses the following technical scheme is adopted: a coal mine switch work recorder, including action times input circuit, travel switch I, travel switch II and PLC controller, travel switch I, travel switch II are set up respectively in the locking piece both sides of isolating reversing switch, wherein travel switch I corresponds the position of locking piece when isolating reversing switch hits to the positive direction, travel switch II corresponds the position of locking piece when isolating reversing switch hits to the reverse direction, travel switch I, travel switch II action signal all access the action times input circuit of PLC controller, are used for recording the action times of isolating reversing switch, the normally open contact action signal of starter's vacuum contactor access the action times input circuit of PLC controller, is used for recording the action times of vacuum contactor.

[0007] Preferably, the action times input circuit includes the isolating reversing switch positive action times input branch, the isolating reversing switch reverse action times input branch, the vacuum contactor action times input branch and the voltage stabilizing circuit for providing stable voltage for the above branch, which are arranged in parallel.

[0008] Preferably, the isolated reverse switch action frequency input branch includes switch J2, relay KA3, triode VT1, VT2, VT3, capacitor C1 and resistors R1, R2, R3; wherein the switch J2 is controlled by the travel switch II, the base of the triode VT1 is connected to the first end of the capacitor C1 and the resistor R1 respectively, the emitter of the triode VT1 is connected to the base of the triode VT2, the collector of the triode VT1 is connected to the first end of the resistor R2, the collector of the triode VT2 is connected to the first end of the resistor R3, the emitter of the triode VT2 is connected to the base of the triode VT3, the collector of the triode VT3 is connected to the first end of the relay KA3, the second end of the resistor R1 is connected to the first end of the switch J2, the second end of the switch J1, the second end of the resistor R2, the second end of the resistor R3 and the second end of the relay KA3 are all connected to one end of the voltage stabilizing circuit, the second end of the capacitor C1 and the emitter of the triode VT3 are all connected to the other end of the voltage stabilizing circuit.

[0009] Preferably, the isolated reverse switch action frequency input branch includes switch J2, relay KA3, triode VT1, VT2, VT3, capacitor C1 and resistors R1, R2, R3; wherein the switch J2 is controlled by the travel switch II, the base of the triode VT1 is connected to the first end of the capacitor C1 and the resistor R1 respectively, the emitter of the triode VT1 is connected to the base of the triode VT2, the collector of the triode VT1 is connected to the first end of the resistor R2, the collector of the triode VT2 is connected to the first end of the resistor R3, the emitter of the triode VT2 is connected to the base of the triode VT3, the collector of the triode VT3 is connected to the first end of the relay KA3, the second end of the resistor R1 is connected to the first end of the switch J2, the second end of the switch J1, the second end of the resistor R2, the second end of the resistor R3 and the second end of the relay KA3 are all connected to one end of the voltage stabilizing circuit, the second end of the capacitor C1 and the emitter of the triode VT3 are all connected to the other end of the voltage stabilizing circuit.

[0010] Preferably, the vacuum contactor action frequency input branch comprises a switch KM3, a relay KA1, triodes VT1, VT2, VT3, a capacitor C1 and resistors R1, R2 and R3; wherein the switch KM3 is the normally open contact of the vacuum contactor, the base of the triode VT1 is connected to the first end of the capacitor C1 and the first end of the resistor R1 respectively, the emitter of the triode VT1 is connected to the base of the triode VT2, the collector of the triode VT1 is connected to the first end of the resistor R2, the collector of the triode VT2 is connected to the first end of the resistor R3, the emitter of the triode VT2 is connected to the base of the triode VT3, the collector of the triode VT3 is connected to the first end of the relay KA1, the second end of the resistor R1 is connected to the first end of the switch J2, the second end of the switch KM3, the second end of the resistor R2, the second end of the resistor R3 and the second end of the relay KA1 are all connected to one end of a voltage stabilizing circuit, and the second end of the capacitor C1 and the emitter of the triode VT3 are all connected to the other end of the voltage stabilizing circuit.

[0011] Preferably, the signal input ends I0.0, I0.1 and I0.2 of the PLC controller are connected to the vacuum contactor action signal, the forward action signal of the isolation reversing switch and the reverse action signal respectively, and the vacuum contactor action signal, the forward action signal of the isolation reversing switch and the reverse action signal correspond to the switch signals of the normally open contact of the vacuum contactor, the travel switch I and the travel switch II respectively; the signal output ends Q0.0, Q0.1 and Q0.2 of the PLC controller are connected to the relays KA1, KA2 and KA3 respectively; and the PLC controller is built-in with a clock.

[0012] Compared with the prior art, the utility model has the beneficial effects that:

[0013] The device can monitor the use frequency of the isolation reversing switch and the vacuum contactor, judge the service life, and also can monitor whether there is an operator to perform illegal operation according to the built-in clock of the PLC controller. BRIEF DESCRIPTION OF DRAWINGS

[0014] In order to more clearly illustrate the technical scheme in the embodiments of the utility model or the prior art, the drawings needed to be used in the embodiments will be briefly introduced below, and obviously, the drawings in the following description are only some embodiments of the utility model, and for those skilled in the art, other drawings can also be obtained according to these drawings without creating laboriously.

[0015] Figure 1 It is the whole circuit connection schematic diagram of this embodiment;

[0016] Figure 2 It is the PLC wiring diagram of this embodiment;

[0017] Figure 3Fig. 1 is a position diagram of the travel switch I and the travel switch II of the present embodiment. DETAILED DESCRIPTION

[0018] The technical solutions in the embodiments of the present application are clearly and completely described in combination with the drawings in the embodiments of the present application. Apparently, the described embodiments are only some of the embodiments of the present application, but not all the embodiments. Based on the embodiments of the present application, all other embodiments obtained by those skilled in the art without creative work fall within the scope of the present application.

[0019] It should be understood that the structures, proportions, sizes, etc. shown in the drawings of the present application are only used to understand and read the disclosed content by those skilled in the art, and are not used to limit the implementation conditions of the present application, and therefore do not have technical substantive significance. Any modification of the structure, change of the proportional relationship or adjustment of the size, without affecting the effects and purposes that can be achieved by the present application, should fall within the scope of the technical content disclosed by the present application. It should be noted that in the present specification, relationship terms such as first and second are only used to distinguish one entity from another entity, and do not necessarily require or imply any actual relationship or order between the entities.

[0020] The present application provides an embodiment:

[0021] As shown in Fig. 1, a coal mine switch operation recorder comprises an action frequency input circuit, a travel switch I, a travel switch II and a PLC controller. Figures 1 to 3 The travel switch I and the travel switch II are respectively arranged on both sides of the locking piece of the isolation reversing switch, wherein the travel switch I corresponds to the position of the locking piece when the isolation reversing switch is turned to the forward direction, and the travel switch II corresponds to the position of the locking piece when the isolation reversing switch is turned to the reverse direction. The action signals of the travel switch I and the travel switch II are both connected to the action frequency input circuit of the PLC controller, and are used to record the action frequency of the isolation reversing switch. The normally open contact action signal of the vacuum contactor of the starter is connected to the action frequency input circuit of the PLC controller, and is used to record the action frequency of the vacuum contactor.

[0022] In the present embodiment, one travel switch is installed on each side of the locking piece of the isolation reversing switch. When the isolation reversing switch is turned to the forward direction, the locking piece contacts the travel switch I. When the isolation reversing switch is turned to the reverse direction, the locking piece contacts the travel switch II. The action of the two travel switches is connected to the PLC, and the action frequency of the isolation switch is recorded.

[0023] The normally open contact (normally open contact KM3) of the vacuum contactor on the starter is connected to the PLC, and the action frequency of the vacuum contactor is recorded.

[0024] The action times input circuit comprises an isolated commutating switch forward action times input branch, an isolated commutating switch reverse action times input branch, a vacuum contactor action times input branch and a voltage stabilizing circuit for providing stable voltage for the above branches.

[0025] The isolated commutating switch forward action times input branch comprises a switch J1, a relay KA2, transistors VT1, VT2, VT3, a capacitor C1 and resistors R1, R2, R3; wherein the switch J1 is controlled by a travel switch I, the base of the transistor VT1 is connected to the first end of the capacitor C1 and the resistor R1 respectively, the emitter of the transistor VT1 is connected to the base of the transistor VT2, the collector of the transistor VT1 is connected to the first end of the resistor R2, the collector of the transistor VT2 is connected to the first end of the resistor R3, the emitter of the transistor VT2 is connected to the base of the transistor VT3, the collector of the transistor VT3 is connected to the first end of the relay KA2, the second end of the resistor R1 is connected to the first end of the switch J1, the second end of the switch J1, the second end of the resistor R2, the second end of the resistor R3 and the second end of the relay KA2 are all connected to one end of the voltage stabilizing circuit, the second end of the capacitor C1 and the emitter of the transistor VT3 are all connected to the other end of the voltage stabilizing circuit.

[0026] The isolated commutating switch reverse action times input branch comprises a switch J2, a relay KA3, transistors VT1, VT2, VT3, a capacitor C1 and resistors R1, R2, R3; wherein the switch J2 is controlled by a travel switch II, the base of the transistor VT1 is connected to the first end of the capacitor C1 and the resistor R1 respectively, the emitter of the transistor VT1 is connected to the base of the transistor VT2, the collector of the transistor VT1 is connected to the first end of the resistor R2, the collector of the transistor VT2 is connected to the first end of the resistor R3, the emitter of the transistor VT2 is connected to the base of the transistor VT3, the collector of the transistor VT3 is connected to the first end of the relay KA3, the second end of the resistor R1 is connected to the first end of the switch J2, the second end of the switch J1, the second end of the resistor R2, the second end of the resistor R3 and the second end of the relay KA3 are all connected to one end of the voltage stabilizing circuit, the second end of the capacitor C1 and the emitter of the transistor VT3 are all connected to the other end of the voltage stabilizing circuit.

[0027] The vacuum contactor action frequency input branch includes a switch KM3, a relay KA1, transistors VT1, VT2, VT3, a capacitor C1, and resistors R1, R2, and R3; wherein the switch KM3 is a normally open contact of the vacuum contactor, the base of the transistor VT1 is connected to the first end of the capacitor C1 and the resistor R1, the emitter of the transistor VT1 is connected to the base of the transistor VT2, the collector of the transistor VT1 is connected to the first end of the resistor R2, the collector of the transistor VT2 is connected to the first end of the resistor R3, the emitter of the transistor VT2 is connected to the base of the transistor VT3, the collector of the transistor VT3 is connected to the first end of the relay KA1, the second end of the resistor R1 is connected to the first end of the switch J2, the second end of the switch KM3, the second end of the resistor R2, the second end of the resistor R3, and the second end of the relay KA1 are all connected to one end of a voltage stabilizing circuit, and the second end of the capacitor C1 and the emitter of the transistor VT3 are both connected to the other end of the voltage stabilizing circuit.

[0028] The circuit is saturated and turned on through VT1-VT3, causing the relay KA1 or the relay KA2 or the relay KA3 to act, turning on the PLC input loop, so that the corresponding action frequency can be recorded, and the PLC controller can be reminded to approach the service life.

[0029] The signal input ends I0.0, I0.1, and I0.2 of the PLC controller are connected to the vacuum contactor action signal, the forward action signal of the isolation reversing switch, and the reverse action signal, respectively, and the vacuum contactor action signal, the forward action signal of the isolation reversing switch, and the reverse action signal correspond to the switch signals of the normally open contact of the vacuum contactor, the travel switch I, and the travel switch II, respectively; the signal output ends Q0.0, Q0.1, and Q0.2 of the PLC controller are connected to the relay KA1, the relay KA2, and the relay KA3, respectively; and the PLC controller is built-in with a clock.

[0030] The operating equipment generally needs to be first jogged and then formally started, and some employees directly start without jogging.

[0031] For example, the vacuum contactor needs to act twice for normal start-up of the starter, and the time of each action is short, and if the number of times is missing, it is determined that the operation is not performed according to the regulations, and based on the clock in the PLC controller, whether the number of times of the signal input end I0.0 is twice and whether the time of the first time is short can be determined, so as to determine whether the employee normally starts the starter.

[0032] The above is only a preferred specific implementation manner of the present application, but the protection scope of the present application is not limited to this, any skilled person in the art can easily think of changes or replacements within the technical range disclosed by the present application, which should be covered in the protection scope of the present application. Therefore, the protection scope of the present application should be subject to the protection scope of the claims.

Claims

1. A coal mine switch performance recorder, characterized in that: The application relates to a motion frequency input circuit, which comprises a motion frequency input circuit, a travel switch I, a travel switch II and a PLC controller; the travel switch I and the travel switch II are arranged on the two sides of a locking piece of an isolation commutating switch, wherein the travel switch I corresponds to the position of the locking piece when the isolation commutating switch is switched to the forward direction, the travel switch II corresponds to the position of the locking piece when the isolation commutating switch is switched to the reverse direction, the motion signals of the travel switch I and the travel switch II are connected to the motion frequency input circuit of the PLC controller, and the motion frequency input circuit is used for recording the motion frequency of the isolation commutating switch; the motion signal of the normally open contact of a vacuum contactor of a starter is connected to the motion frequency input circuit of the PLC controller, and the motion frequency input circuit is used for recording the motion frequency of the vacuum contactor.

2. The mine switch record apparatus according to claim 1, characterized in that: The motion frequency input circuit comprises an isolation commutating switch forward motion frequency input branch, an isolation commutating switch reverse motion frequency input branch, a vacuum contactor motion frequency input branch and a voltage stabilizing circuit for providing stable voltage for the branches.

3. A coal mine switch operation recorder according to claim 2, characterized in that: The isolation commutating switch forward motion frequency input branch comprises a switch J1, a relay KA2, transistors VT1, VT2 and VT3, a capacitor C1 and resistors R1, R2 and R3; wherein the switch J1 is controlled by the travel switch I, the base of the transistor VT1 is connected to the first end of the capacitor C1 and the first end of the resistor R1, the emitter of the transistor VT1 is connected to the base of the transistor VT2, the collector of the transistor VT1 is connected to the first end of the resistor R2, the collector of the transistor VT2 is connected to the first end of the resistor R3, the emitter of the transistor VT2 is connected to the base of the transistor VT3, the collector of the transistor VT3 is connected to the first end of the relay KA2, the second end of the resistor R1 is connected to the first end of the switch J1, the second end of the switch J1, the second end of the resistor R2, the second end of the resistor R3 and the second end of the relay KA2 are connected to one end of the voltage stabilizing circuit, and the second end of the capacitor C1 and the emitter of the transistor VT3 are connected to the other end of the voltage stabilizing circuit.

4. The mine switch record apparatus according to claim 3, characterized in that: The isolation commutating switch reverse motion frequency input branch comprises a switch J2, a relay KA3, transistors VT1, VT2 and VT3, a capacitor C1 and resistors R1, R2 and R3; wherein the switch J2 is controlled by the travel switch II, the base of the transistor VT1 is connected to the first end of the capacitor C1 and the first end of the resistor R1, the emitter of the transistor VT1 is connected to the base of the transistor VT2, the collector of the transistor VT1 is connected to the first end of the resistor R2, the collector of the transistor VT2 is connected to the first end of the resistor R3, the emitter of the transistor VT2 is connected to the base of the transistor VT3, the collector of the transistor VT3 is connected to the first end of the relay KA3, the second end of the resistor R1 is connected to the first end of the switch J2, the second end of the switch J1, the second end of the resistor R2, the second end of the resistor R3 and the second end of the relay KA3 are connected to one end of the voltage stabilizing circuit, and the second end of the capacitor C1 and the emitter of the transistor VT3 are connected to the other end of the voltage stabilizing circuit.

5. A coal mine switch operation recorder according to claim 4, characterized in that: The vacuum contactor action frequency input branch includes switch KM3, relay KA1, triode VT1, VT2, VT3, capacitor C1, and resistors R1, R2 and R3; wherein the switch KM3 is the normally open contact of the vacuum contactor, the base of the triode VT1 is connected with the first end of the capacitor C1 and the first end of the resistor R1 respectively, the emitter of the triode VT1 is connected with the base of the triode VT2, the collector of the triode VT1 is connected with the first end of the resistor R2, the collector of the triode VT2 is connected with the first end of the resistor R3, the emitter of the triode VT2 is connected with the base of the triode VT3, the collector of the triode VT3 is connected with the first end of the relay KA1, the second end of the resistor R1 is connected with the first end of the switch J2, the second end of the switch KM3, the second end of the resistor R2, the second end of the resistor R3 and the second end of the relay KA1 are all connected with one end of the voltage stabilizing circuit, the second end of the capacitor C1 and the emitter of the triode VT3 are all connected with the other end of the voltage stabilizing circuit.

6. A coal mine switch operation recorder according to claim 5, characterized in that: The signal input ends I0.0, I0.1 and I0.2 of the PLC controller are connected with the vacuum contactor action signal, the forward action signal of the isolation reversing switch and the reverse action signal respectively, and the vacuum contactor action signal, the forward action signal of the isolation reversing switch and the reverse action signal correspond to the switch signals of the normally open contact of the vacuum contactor, the travel switch I and the travel switch II respectively; the signal output ends Q0.0, Q0.1 and Q0.2 of the PLC controller are connected with the relays KA1, KA2 and KA3 respectively; the PLC controller is built-in with a clock.

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