KR100744196B1 - Pull cord switch and monitoring system of conveyor using the same - Google Patents

Abstract

A pull cord switch for a conveyor and a conveyor monitoring and controlling system using the same are provided to improve the durability and the reliability for safety by preventing contamination of a switch unit. A pull cord switch for a conveyor includes a housing, a terminal block(20), a switch unit(30), a first rotational shaft, a second rotational shaft, an insulation oil, a cover member, and a radio communication module(80). The housing has a first space section one side of which is opened. The terminal block is engaged with the housing so as to be divided from the first space section. A plurality of terminals is installed in the terminal block. The switch unit is installed in the interior of the first space section and has at least one manipulation section for supplying and interrupting a power source to a conveyor drive source through a terminal of the terminal block. The first rotational shaft is supported by the housing. One side of the rotational shaft is protrudes outward. A rotary lever is mounted to the first rotational shaft. The second rotational shaft is rotatably installed in the housing so as to be located in the first space section and is engaged with the first rotational shaft by a power transfer unit. A manipulation lever member for manipulating the manipulation section for supplying and interrupting a power source of the switch unit is installed in the second rotational shaft. The insulation oil is filled in the first space section. The cover member is engaged with the housing to close the first space section. The radio communication module is installed in the housing and detects interruption of a power source to the conveyor drive source of the switch unit by the operation of the manipulation lever member. The radio communication module wirelessly transmits the detected information.

Description

Pull cord switch and monitoring system of conveyor using the same}

1 is an exploded perspective view of a full cord switch for a conveyor according to the present invention;

FIG. 2 is a plan view showing the cover member of the full cord switch of FIG. 1 removed; FIG.

3 is a cross-sectional view of the full cord switch of FIG.

Figure 4 is a front view of the full cord switch of Figure 1, a view showing a state in which the rope is installed,

5 is a block diagram illustrating a wireless communication module of FIG. 1,

FIG. 6 is a diagram illustrating a conveyor monitoring control system to which the full code switch of FIG. 1 is applied.

<Explanation of symbols for main parts of the drawings>

10; Full code switch 20; terminal block

30 switch unit 40; Driving means

50; Return means 80: wireless communication module

93: battery 100; Insulation oil

200: rope

The present invention relates to a full code switch for a conveyor and a conveyor monitoring control system using the same, and to a conveyor full code switch and a conveyor monitoring control system using the same, so that the operation information of the full code switch can be wirelessly transmitted and collected. .

Conveyor systems for transporting iron ore, coal and the like are typically very long, extending for several kilometers. Since the conveyor system is located at a remote location from the driving unit, an emergency stop device that can operate the emergency switch accurately when emergency stop is necessary in an emergency situation and can easily check and repair is common.

Korean Unexamined Utility Model No. 1998-033630 discloses an example of a remote emergency stop device of the drive unit. The disclosed remote emergency stop device installs sliders on both sides of the open and close enclosures under the tension of the wires and the restoring force of the springs, but installs a plug and an outlet on the inside of the enclosure where both sliders meet so that the terminal block is electrically connected to the drive unit. A structure for blocking a contact is disclosed.

Registered Utility Model No. 20-0302686 discloses an emergency stop device for a belt conveyor. The disclosed emergency stop device includes an upper and lower housings, an actuating lever having a plurality of linking rings formed through a bearing fixed to a double fixing part of an upper housing and connected to a wire rope at an upper end thereof, and a correction spring fixed to a bottom of a double fixing part. And an angle sensing unit installed through the upper surface of the lower housing and a stopper reset unit detachable from the fixed shaft of the angle sensing unit in the housing.

In addition, Korean Utility Model Registration No. 20-0123912 discloses a full code switch device that detects normal operation and abnormal operation to light an alarm melody or a light emitting lamp.

However, when the length of the conveyor is extended by several kilometers and a large number of full cord switches are installed, according to the emergency stop device, which is a conventional full cord switch, the full cord switch is operated when any one of the full cord switches is operated by an operator. The operator can know the location of the conveyor where the problem occurred, but if the worker does not report the problem to the manager who manages the conveyor system as a whole, the manager will not be able to know the problem and it will be difficult for the worker to take the corrective action immediately. have.

The present invention was devised to improve the above-mentioned problems, and has a low power consumption, and a full code switch for a conveyor capable of wirelessly transmitting operation information including position information on the operation of a full code switch together with position information, and a conveyor using the same. The purpose is to provide a supervisory control system.

In order to achieve the above object, a full cord switch for a conveyor according to the present invention has a housing having a first space part open at one side thereof, coupled to the housing so as to be partitioned from the first space part, and a plurality of terminals are installed. A switch unit installed inside the first space part and having at least one operation part for supplying and intermitting power to a conveyor driving source through a terminal of the terminal block; A first rotating shaft protruding outward from the first space part to which the rotation lever is mounted; Rotatably installed in the housing so as to be located in the first space, coupled to the first rotating shaft and the power transmission means, and provided with an operating lever member for operating the operation unit for supplying power and shorting the switch unit; Two rotating shafts; Insulating oil filled in the first space; A cover member coupled to the housing to seal the first space; And a wireless communication module which detects whether power is interrupted to the conveyor driving source of the switch unit by the operation of the operation lever member, and wirelessly transmits the detected information.

Preferably, the first rotation shaft further includes a return means for returning to the original position when the rotation lever is rotated, wherein the return means has one side fixed to a bracket fixed to the housing and the other side fixed to the first rotation shaft. At least one torsion spring is installed.

In addition, it is further provided with a stopping means installed in the housing to fix the rotation of the first and second rotary shaft.

Preferably, the wireless communication module is capable of communicating by a Zigbee protocol.

In addition, in order to achieve the above object, the conveyor monitoring control system according to the present invention is installed to control the power supply to the drive source of the conveyor by the operation of the operating lever member of the conveyor by the operation of the operating lever member A plurality of full code switches having a wireless communication module for detecting the presence of power interruption to a driving source and transmitting the result wirelessly; A wireless base station operating as a sink node for the wireless communication module and collecting information transmitted from the wireless communication module of the full code switches; And a management server connected to the wireless base station through a communication interface to store information collected through the wireless base station so as to be viewable and to manage the full code switch.

Hereinafter, with reference to the accompanying drawings will be described in more detail a full code switch for a conveyor according to a preferred embodiment of the present invention and a conveyor monitoring control system using the same.

The full cord switch for a conveyor according to the present invention is to cause an abnormality or an urgent situation to be driven in the driven conveyor so as to cut off the power supplied to the conveyor driving source, an embodiment of which is illustrated in FIGS. 1 and 2.

1 and 2, a full cord switch 10 for a conveyor includes a housing 12 having a first space 11 open at one side thereof, and a plurality of side surfaces of the first space 11. The terminal block 20 is provided with two terminals 21a to 21d.

Among the terminals 21a to 21d formed in the terminal block 20, reference numerals 21a and 21b are for connecting cables (see Fig. 3; 23a and 23b) leading to the conveyor drive source, and reference candidates 21c and 21d are wireless communication modules ( 80 is a terminal for connecting the battery 93 for driving the wireless communication module 80 with.

The periphery of the terminal block 20 is provided to have a skirt portion 12a, which extends to surround the terminal block 20 and to which cables connected to the conveyor driving cable connecting terminals 21a and 21b flow. An opening 12b may be formed on the front surface of the skirt portion 12a to facilitate the operation when the cable and the terminals 21a and 21b are coupled and separated.

In the first space 11 of the housing 12, a switch unit 30 is installed to be connected via a terminal block 20 to supply and control power to a drive source of the conveyor.

The switch unit 30 is provided with at least one operation part 31 for operating this.

The operation unit 31 is capable of coupling and detaching the plug with respect to the outlet, but is not limited thereto. The operation unit 31 may be a conventional structure that can control the power when pressing or removing the pressing force, for example, a switch terminal may be elastically open while being switched on when pressed.

In the first space portion 11 of the housing 12, drive means 40 for operating the operation portion 31 of the switch unit 30 is provided.

The driving means 40 is rotatably installed in the housing 12, the first rotating shaft 41 having an end protruding from the outer circumferential surface of the housing 12, and the first rotating shaft 41 protruding from the outer circumferential surface of the housing 12. It is provided with a rotation lever 42 installed at the end of the return means 50 is installed in the housing 12 for returning it to its original position when the first rotation shaft 41 is rotated by the rotation lever 42.

The return means 50 includes at least one torsion spring 52 having one side fixed to the bracket 51 fixed to the housing 12 and the other side installed on the first rotation shaft 41. 52 may be supported by the first rotation shaft 41 and may be wrapped by the case 53.

The return means 50 is not limited to the above-described embodiment, and may be any structure as long as the return means 50 can return the first rotational shaft 41 rotated by the rotation lever 42 to its original position.

The first space 11 of the housing 12 is rotated by the first rotation shaft 41 and the power transmission means 43, and the second rotation shaft 44 is installed on the support 44a so as to be rotatable. The two rotary shafts 44 are provided with at least one operating lever member 45 for operating the operation unit 31 for supplying power and shorting the switch unit 30.

The operation lever member 45 is an eccentric cam inserted into the second rotation shaft 44 to advance and retract the operation unit 31 according to the rotation angle so as to connect and disconnect the power supply to the conveyor drive source of the switch unit 30. Can be done.

The power transmission means 43 has first and second gears 43a and 43b installed on the first and second rotary shafts 41 and 44, respectively, but are not limited thereto, and the rotation lever 42 is not limited thereto. Any structure can be used as long as it can transmit the driving force of the first rotary shaft 41 to the second rotary shaft 44.

 Meanwhile, the housing 12 may further include a stopping means 60 for fixing the rotation of the first and second rotation shafts 41 and 44.

The stopper means 60 is provided with a coupling hole 61 in the second gear 43b, selectively coupled to the coupling hole 61 and elastically biased to the gear side by a spring 63 installed in the main body 62. A coupling pin 64 is provided.

The wireless communication module 80 is installed to detect the presence or absence of contact interruption of the switch unit 30 by the rotation of the rotation lever 42, and wirelessly transmits the detected information through the antenna 88.

Reference numeral 93 denotes a battery for the wireless communication module 80 and is installed to supply power to the wireless communication module 80 through terminals 21c and 21d of the terminal block 20.

A more detailed description of the wireless communication module 80 will be described later.

Meanwhile, as shown in FIG. 3, the insulating oil 100 is installed in the first space 11 of the housing 12 in a state where the switch unit 30, the driving means 40, and the wireless communication module 80 are installed. The first space 11 is filled by the cover member 14 coupled with the housing 12.

In the present invention, the driving means 40 installed in the first space portion 11 of the housing 12 is not limited to the above-described embodiment, and is applied to the driving source of the conveyor in abnormal operation and emergency in driving the conveyor. Any structure can be used as long as it can transmit the rotational force of the rotation lever 42 to cut off the power supply to the operation unit 31 of the switch unit 30.

Referring to Figure 4 with the action of the full-cord switch 10 for a conveyor according to the present invention configured as described above are as follows.

The full cord switch 10 for a conveyor according to the present invention is installed at predetermined intervals in the length direction of the conveyor system so as to intermittently supply power to a driving source of the unit conveyor, and each full cord switch 10 Rotating lever 42 is connected to the rope (200). In this state, when a specific conveyor of the Kenvey system is abnormally operated and needs to be sharpened, the worker pulls the rope 200.

In this way, the rotation lever 42 is rotated, the first rotary shaft 41 connected thereto is rotated, and the second rotary shaft 44 connected by the power transmission means 43 is rotated. Therefore, the operation unit 31 of the switch unit 30 is operated by the operation lever members 45 installed on the second rotary shaft 44 to cut off the power supplied to the drive source of the conveyor. In this process, since the coupling pin 64 of the stopping means 60 is elastically biased toward the second gear 43b, the coupling pin 64 is coupled to the coupling hole 61 as the second gear 43b rotates. The blocked state of the unit 30 is maintained. In this process, the wireless communication module 80 detects the open state of the contact point of the switch unit 30, and transmits the detected information by using the detected information as the destination address of the wireless base station through the RF transmitter / receiver.

Meanwhile, in order to solve the abnormality of the conveyor and to operate the conveyor normally, the coupling pin 64 of the stopping means 60 is separated from the second gear 43b. In this way, the first rotation shaft 41 is rotated to its original position by the torsion spring 52, which is the return means 50, and is returned. Accordingly, the first rotation shaft 41 is rotated by the first and second gears 43a and 43b. By rotating the 44, the operation lever member 45 drives the operation unit 31 of the switch unit 30.

Since the insulating oil 100 is filled in the first space 11 of the housing 12 during the operation as described above, it is possible to fundamentally prevent the generation of sparks or shorts due to the operation. In addition, since the first space 11 is completely sealed by the housing 12, the terminal block 20, and the cover member 14, foreign matters are prevented from being introduced from outside, and the cable and the full cord switch 10 are separated from each other. When connecting, the terminal block 20 and the cable may be connected so that the first space 11 in which the switch unit 30 is installed, as in the prior art, does not need to be opened. Therefore, contamination of the first space part 11 of the housing can be essentially blocked.

On the other hand, the wireless communication module 80 may be configured to detect the switch on / off of the cable corresponding to the conveyor drive source of the switch unit 30 of the switch unit 30, and to transmit the detected information, it is preferable An example is shown in FIG. 5.

The wireless communication module 80 includes an RF transmission / reception unit 81, a control unit 83, a storage unit 85, and a power interruption detection unit 87.

The RF transmitter / receiver 81 is controlled by the controller 83 to transmit and receive information through the antenna 88.

The power supply interruption detection unit 87 may be constructed to detect the presence or absence of interruption of the switch terminal of the switch unit 30 and output the detected information to the control unit 83.

As an example of the power interruption detecting unit 87, the operation state of the movable terminal for interconnecting and disconnecting the switch terminals so that the switch terminals of the switch unit 30 by the operation of the operation lever member 45 can be detected on or off is described. Various methods are possible, such as a method of detecting a rotational position corresponding to a switch on or off of the operating lever member 45 or installed to detect the contact or non-contact type.

The storage unit 85 is controlled by the control unit 83 to record operation state information including the switch-off occurrence time information detected by the power interruption detection unit 87, or stores various data necessary for wireless communication. For example, the storage unit 85 may store a unique address or identification information, and a routing table for supporting a wireless network may be stored.

The control unit 83 transmits the information through the RF transmission / reception unit 81 according to the information received from the power interruption detection unit 87.

Preferably, the wireless communication module 80 is constructed to communicate according to the Zigbee standard based on IEEE 802.15.4 proposed by the International Electrotechnical Commission (IEEE).

As is well known, the Zigbee communication method is advantageous in miniaturization of hardware because the communication protocol is very simple, and can be operated for about 1 to 2 years with a conventional small battery, which can reduce power consumption and prolong the battery replacement cycle. .

When a wireless communication module is constructed according to the Zigbee communication method, a routing table having a tree structure is recorded in the storage unit 85 so as to perform a wireless network.

Conveyor monitoring control system to which the full code switch 10 is applied, as shown in Figure 6 by installing the full cord switch (10a to 10n) at a predetermined interval in the longitudinal direction of the conveyor 300 of the conveyor system of the unit conveyor It is provided to intermittently supply power to the drive source, and includes a wireless base station 310 and a management server 320 connected to the full cord switches 10a to 10n through a communication network.

The radio base station 310 collects the information of each full code switch 10a to 10n as a sink node, relays communication with the management server 320, and, if there is a request for information transmission from the management server 320, each full code. Information transmission is requested to the switches 10a to 10n, and the transmitted information is transmitted to the management server 320.

The radio base station 310 is provided with an interface device for interfacing with the management server 320 in addition to the control unit, the storage unit and the RF transceiver unit mentioned in the wireless communication module 80. The interface method of the interface device applied to the wireless base station 310 may be a variety of known methods such as the Internet, wireless LAN, wired.

The management server 320 is constructed in a general computer structure, and a program for user interfacing for managing the full code switches 10a to 10n is installed.

The management server 320 is connected to the wireless base station 310 through the communication interface 315 to store the information transmitted from the wireless base station 310 to be viewed, the operating state of the full code switch (10a to 10n) from the manager If there is a request to check the process through the radio base station 310 to collect the status information from each full code switch (10a to 10n).

On the other hand, each full code switch 10a to 10n has a unique identification information as a sensor node, and when abnormality is detected, that is, the rope 200 of the full code switch 10a to 10n is pulled to supply power to the conveyor drive source. When the switch unit 30 is operated to be blocked, the operation state information along with the unique identification information is transmitted through the wireless communication module 80.

The wireless network method by the Zigbee method of the wireless communication module 80 is known and detailed description thereof will be omitted.

On the other hand, the communication method of the wireless communication module 80 is a wireless network communication method different from the above-described method, for example, a variety of known methods such as Bluetooth can be applied, of course.

According to this system, when the pull cord switch 10a to 10n of any one of the plurality of full cord switches 10a to 10n is pulled by an operator in the event of an abnormality or emergency of the conveyor, the conveyor 200 is stopped. It can be delivered to the management server 320 wirelessly, the administrator can immediately know the position of the conveyor caused the stop through the unique identification information of the full code switch (10a to 10n) can immediately perform the action for recovery That provides the benefits.

As described above, according to the full code switch for a conveyor according to the present invention and a conveyor monitoring control system using the same, whether the full code switch is operated and the position at which the full code switch is operated can be collected from a remote location through a network. It provides an easy advantage. In addition, the full cord switch for conveyor can fundamentally solve the contamination of the switch unit under adverse conditions such as dust, moisture, and severe temperature change, and can stabilize the work by improving reliability of durability and safety.

Claims (5)

A housing having a first space having one side opened; A terminal block coupled to the housing so as to be partitioned from the first space, and having a plurality of terminals installed therein; A switch unit installed in the first space part and having at least one operation part for supplying and controlling power to a conveyor driving source through a terminal of the terminal block; A first rotating shaft supported by the housing and having one side protruding to the outside of the first space to mount a rotation lever; Rotatably installed in the housing so as to be located in the first space, coupled to the first rotating shaft and the power transmission means, and provided with an operating lever member for operating the operation unit for supplying power and shorting the switch unit; Two rotating shafts; Insulating oil filled in the first space; A cover member coupled to the housing to seal the first space; And a wireless communication module installed in the housing, detecting whether power is interrupted to the conveyor driving source of the switch unit by the operation of the operation lever member, and wirelessly transmitting the detected information. Full cord switch. The method of claim 1, The first rotation shaft further includes a return means for returning to the original position when the rotation lever by the rotation lever, The return means is a full cord switch for a conveyor, characterized in that it comprises at least one torsion spring fixed to one side of the bracket fixed to the housing and the other side is installed on the first rotary shaft. The method of claim 1, And a stopping means installed on the housing to fix rotation of the first and second rotary shafts. The method according to any one of claims 1 to 3, The wireless communication module is a full code switch for a conveyor, characterized in that the communication by the Zigbee protocol. A wireless communication module is installed to intermittently supply power to the drive source of the conveyor by operating the control lever member, and wirelessly detects the presence or absence of power interruption to the drive source of the conveyor due to the operation of the control lever member. A plurality of full cord switches; A wireless base station operating as a sink node for the wireless communication module and collecting information transmitted from the wireless communication module of the full code switches; And a management server connected to the wireless base station through a communication interface to store information collected through the wireless base station so as to be viewable and to manage the full code switch. The full cord switch is A housing having a first space having one side opened; A terminal block coupled to the housing so as to be partitioned from the first space part, and having a plurality of terminals installed to relay a power supply to the conveyor driving source; A switch unit installed in the first space part and having at least one operation part for supplying and controlling power to the conveyor driving source through a terminal of the terminal block; A first rotating shaft supported by the housing and having one side protruding to the outside of the first space to mount a rotation lever; Rotatably installed in the housing so as to be located in the first space, coupled to the first rotational shaft and a power transmission means, and provided with the operation lever member for operating an operation unit for supplying power and shorting the switch unit; Two rotating shafts; Insulating oil filled in the first space; And a cover member coupled to the housing to seal the first space part.

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