CN110950243B

CN110950243B - Collector wear monitoring device

Info

Publication number: CN110950243B
Application number: CN201811123435.XA
Authority: CN
Inventors: 袁海; 张永志; 杜爽; 卫轶博; 丁杰
Original assignee: MCC Baosteel Technology Services Co Ltd
Current assignee: MCC Baosteel Technology Services Co Ltd
Priority date: 2018-09-26
Filing date: 2018-09-26
Publication date: 2021-02-19
Anticipated expiration: 2038-09-26
Also published as: CN110950243A

Abstract

The invention provides a current collector abrasion monitoring device, which comprises a contact detection module, a signal judgment unit connected with the contact detection module and an alarm module connected with the signal judgment unit, wherein the contact detection module comprises a detection probe arranged on a current collector, and when a sliding block of the current collector is abraded to a set state, the detection probe is contacted with a sliding contact line; when the detection probe is in contact with the sliding contact line, the contact detection module sends a contact signal to the signal judgment unit; the signal judgment unit judges whether the contact signal is a wear signal, and when the signal judgment unit judges that the contact signal is the wear signal, the signal judgment unit sends an alarm signal to the alarm module, and the alarm module gives an alarm to prompt a worker to overhaul the current collector, so that the wear state of the current collector is monitored; compared with a manual visual inspection mode, the current collector abrasion monitoring device can timely and accurately monitor the abrasion state of the current collector.

Description

Collector wear monitoring device

Technical Field

The invention relates to a monitoring device, in particular to a current collector abrasion monitoring device.

Background

When the bridge crane runs, the power supply of the bridge crane is realized in a mode that a sliding contact line is in sliding contact with a current collector. Thus, the slider of the collector may frequently rub against the trolley wire. When the abrasion loss of the sliding block reaches about ten sliding millimeters, the chamfers at the front end and the rear end of the sliding block disappear due to abrasion, and the front end and the rear end of the sliding block form a right angle; when the crane runs, the current collector and the sliding block impact the trolley line, and the trolley line falls. In addition, the sliding contact line can fall off due to plant settlement, current collector blade abrasion and current collector support deformation. At present, in the daily running process of a traveling crane, namely a bridge crane, the abrasion loss of a current collector and a sliding block is monitored by visual inspection of an operator, and the monitoring method is lack of quantitative standards and scientific and convenient monitoring means. Meanwhile, due to the fact that the use places and working conditions of the sliding contact line and the current collector are different, and factors such as skills, experience and work responsibility of equipment personnel are added, the existing monitoring method cannot timely and accurately monitor whether the abrasion loss of the sliding block reaches the set standard or not. In the running process of the crane, particularly under the condition that the sliding block of the current collector is seriously abraded, a sliding contact line is possibly pulled off and a large-area power supply fault is caused by a slight difference, and further, the field production is extremely adversely affected. Meanwhile, the cost required for fault recovery is high, the production and construction period is long, the busy production requirements of a steel plant cannot be met, and serious economic loss can be caused. That is, when the wear of the slide reaches the wear level, but the field equipment personnel carelessly fail to find the condition, and the current collector is not repaired and replaced in time, irreparable economic loss can be caused. Therefore, it is very important to develop a current collector monitoring device capable of timely and accurately monitoring whether the wear amount of the sliding block reaches a set standard.

Disclosure of Invention

In view of the above-described drawbacks of the prior art, an object of the present invention is to provide a collector wear monitoring device capable of monitoring a wear state of a collector.

In order to achieve the purpose, the invention provides a current collector abrasion monitoring device, which comprises a contact detection module, a signal judgment unit connected with the contact detection module and an alarm module connected with the signal judgment unit, wherein the contact detection module comprises a detection probe arranged on a current collector, and when a sliding block of the current collector is abraded to a set state, the detection probe is contacted with a sliding contact line; when the detection probe is in contact with the sliding contact line, the contact detection module sends a contact signal to the signal judgment unit; the signal judging unit judges whether the contact signal is a wear signal, and when the signal judging unit judges that the contact signal is the wear signal, the signal judging unit sends an alarm signal to the alarm module, and the alarm module gives an alarm.

Furthermore, the signal judgment unit comprises a first-stage signal judgment module connected with the contact detection module and a second-stage signal judgment module connected with the first-stage signal judgment module, and the alarm module is connected with the second-stage signal judgment module; when the detection probe is in contact with the sliding contact line, the contact detection module sends a contact signal to the first-stage signal judgment module; the first-stage signal judgment module judges whether the contact signal is a wear signal, and when the first-stage signal judgment module judges that the contact signal is the wear signal, the first-stage signal judgment module sends the contact signal to the second-stage signal judgment module, the second-stage signal judgment module judges whether the contact signal is the wear signal, and when the second-stage signal judgment module judges that the contact signal is the wear signal, the second-stage signal judgment module sends an alarm signal to the alarm module.

Further, the contact detection module still includes the first relay of being connected with the test probe electricity, first level signal judgement module includes the second relay of being connected with first relay electricity, just the second relay is the delay relay, second level signal judgement module includes the third relay of being connected with the second relay electricity, and the third relay is the delay relay, alarm module includes the alarm of being connected with the third relay electricity.

Furthermore, there are two detection probes, and two detection probes are respectively located the front and back both sides of slider.

Furthermore, there are two first relays, and the two first relays are respectively electrically connected with the two detection probes.

Furthermore, the alarm is an audible and visual alarm.

Further, the first relay is electrically connected with the detection probe through a first circuit breaker.

As described above, the collector wear monitoring device according to the present invention has the following advantageous effects:

the working principle of the current collector abrasion monitoring device is as follows: when the sliding block of the current collector is worn to a set state, the detection probe is contacted with the sliding contact line; when the detection probe is in contact with the sliding contact line, the contact detection module sends a contact signal to the signal judgment unit; the signal judgment unit judges whether the contact signal is a wear signal, and when the signal judgment unit judges that the contact signal is the wear signal, the signal judgment unit sends an alarm signal to the alarm module, and the alarm module gives an alarm to prompt a worker to overhaul the current collector, so that the wear state of the current collector is monitored; compared with a manual visual inspection mode, the current collector abrasion monitoring device can timely and accurately monitor the abrasion state of the current collector. Meanwhile, the current collector abrasion monitoring device judges the contact signal by using the signal judgment unit of the current collector abrasion monitoring device to ensure that the contact signal is an abrasion signal, namely the signal judgment unit judges whether the detection probe is in contact with the sliding contact line when the sliding block of the current collector is abraded to a set state, so that the condition that the detection probe is in contact with the sliding contact line due to accidental reasons, such as temporary inclination of the current collector, but not in the set state is eliminated, and the current collector abrasion monitoring device can accurately monitor the abrasion state of the current collector to avoid sending wrong alarms.

Drawings

Fig. 1 is an electrical schematic of a collector wear monitoring device of the present invention.

Fig. 2 is a schematic view of the structure of the current collector in the present invention.

Fig. 3 is a schematic view of the structure of the collector of the present invention worn to a set state.

Fig. 4 is a schematic structural diagram of the detection probe of the present invention.

Description of the element reference numerals

1 contact detection module

11 detection probe

12 first relay

13 first circuit breaker

2 signal judging unit

21 first-stage signal judgment module

211 second relay

22 second-stage signal judging module

221 third relay

3 alarm module

31 alarm

4 Current collector

41 slider

5 Power supply

6 sliding contact line

7 second circuit breaker

Detailed Description

The following description of the embodiments of the present invention is provided for illustrative purposes, and other advantages and effects of the present invention will become apparent to those skilled in the art from the present disclosure.

It should be understood that the structures, ratios, sizes, and the like shown in the drawings are only used for matching the disclosure of the present disclosure, and are not used for limiting the conditions of the present disclosure, so that the present disclosure is not limited to the technical essence, and any modifications of the structures, changes of the ratios, or adjustments of the sizes, can still fall within the scope of the present disclosure without affecting the function and the achievable purpose of the present disclosure. In addition, the terms "upper", "lower", "left", "right", "middle" and "one" used in the present specification are for convenience of description only, and are not intended to limit the scope of the present invention, and the relative relationship between the terms and the terms is not to be construed as a scope of the present invention unless otherwise specified.

As shown in fig. 1 to 4, the present invention provides a collector wear monitoring device, which includes a contact detection module 1, a signal determination unit 2 connected to the contact detection module 1, and an alarm module 3 connected to the signal determination unit 2, wherein the contact detection module 1 includes a detection probe 11 mounted on a collector 4. When the sliding block 41 of the current collector 4 is worn to a set state, the detection probe 11 is in contact with the trolley wire 6; when the detection probe 11 is in contact with the trolley line 6, the contact detection module 1 sends a contact signal to the signal judgment unit 2; the signal judging unit 2 judges whether the contact signal is a wear signal, and when the signal judging unit 2 judges that the contact signal is the wear signal, the signal judging unit 2 sends an alarm signal to the alarm module 3, and the alarm module 3 gives an alarm to prompt a worker to overhaul the current collector 4, so that the wear state of the current collector 4 is monitored; compared with a manual visual inspection mode, the current collector abrasion monitoring device can timely and accurately monitor the abrasion state of the current collector 4. Meanwhile, the current collector wear monitoring device judges the contact signal by using the signal judgment unit 2 to ensure that the contact signal is a wear signal, namely, the signal judgment unit 2 judges whether the detection probe 11 is in contact with the sliding contact line 6 when the sliding block 41 of the current collector 4 is worn to a set state, so that the condition that the detection probe 11 is in contact with the sliding contact line 6 due to accidental reasons, such as temporary inclination of the current collector 4, but the sliding block 41 of the current collector 4 is not worn to the set state is eliminated, and the current collector wear monitoring device can accurately monitor the wear state of the current collector 4 to avoid sending wrong alarms.

As shown in fig. 1 to 4, in the present embodiment, the signal determination unit 2 includes a first-stage signal determination module 21 connected to the contact detection module 1, and a second-stage signal determination module 22 connected to the first-stage signal determination module 21, and the alarm module 3 is connected to the second-stage signal determination module 22; when the detection probe 11 is in contact with the trolley line 6, the contact detection module 1 sends a contact signal to the first-stage signal judgment module 21; the first-stage signal judgment module 21 judges whether the contact signal is a wear signal, and when the first-stage signal judgment module 21 judges that the contact signal is a wear signal, the first-stage signal judgment module 21 sends the contact signal to the second-stage signal judgment module 22, the second-stage signal judgment module 22 judges whether the contact signal is a wear signal, and when the second-stage signal judgment module 22 judges that the contact signal is a wear signal, the second-stage signal judgment module 22 sends an alarm signal to the alarm module 3. In the embodiment, two stages of signal judgment modules, namely the first-stage signal judgment module 21 and the second-stage signal judgment module 22, are used for respectively judging the contact signal so as to ensure that the detection probe 11 is in contact with the sliding contact line 6 when the sliding block 41 is worn to a set state when the contact signal is a wear signal, and then an alarm signal is sent to the alarm module 3 so as to ensure that the wear monitoring device for the current collector can accurately monitor the wear state of the current collector 4 and avoid sending out false alarms.

As shown in fig. 1, in the present embodiment, the contact detection module 1 further includes a first relay 12 electrically connected to the detection probe 11, the first-stage signal judgment module 21 includes a second relay 211 electrically connected to the first relay 12, the second relay 211 is a time delay relay, the second-stage signal judgment module 22 includes a third relay 221 electrically connected to the second relay 211, the third relay 221 is a time delay relay, and the alarm module 3 includes an alarm 31 electrically connected to the third relay 221. When the detection probe 11 is in contact with the trolley line 6, the first relay 12 is electrified, and a contact of the first relay 12 acts, that is, the first relay 12 sends a contact signal to the first-stage signal judgment module 21, so that the second relay 211 is electrified, when the electrification time of the second relay 211 reaches a set time, the contact of the second relay 211 acts, that is, when the electrification time of the second relay 211 reaches the set time, it is described that the contact time of the detection probe 11 and the trolley line 6 reaches the set time, the first-stage signal judgment module 21 sequentially judges that the contact signal is an abrasion signal, the second relay 211 sends a contact signal to the second-stage signal judgment module 22, so that the third relay 221 is electrified, otherwise, the contact of the second relay 211 cannot act, and the third relay 221 cannot be electrified; when the electrified time of the third relay 221 reaches the set time, the contact of the third relay 221 acts, that is, when the electrified time of the third relay 221 reaches the set time, it indicates that the contact time of the detection probe 11 and the trolley line 6 reaches a longer set time, the second-stage signal judgment module 22 sequentially judges that the contact signals are abrasion signals, the third relay 221 sends an alarm signal to the alarm module 3, so that the alarm 31 is electrified, the alarm 31 gives an alarm to remind a worker that the abrasion state of the current collector 4 reaches the set state at the moment, the current collector 4 needs to be overhauled, otherwise, the contact of the third relay 221 does not act, and the alarm 31 is not electrified. In this embodiment, when the second relay 211 is electrified for a set time, it is described that the contact time between the detection probe 11 and the sliding wire reaches a certain time, so as to preliminarily eliminate the situation that the detection probe 11 is in contact with the sliding wire 6 in a short time due to an accidental factor; meanwhile, when the third relay 221 is electrified for a set time, the contact time of the detection probe 11 and the trolley line 6 is longer than the set time, so that the detection probe 11 is further determined to be in contact with the trolley line 6 due to the fact that the sliding block 41 is worn to a set state, the contact of the third relay 221 acts at the moment, the alarm 31 gives an alarm, and therefore the monitoring accuracy of the collector wear monitoring device is effectively guaranteed to be higher.

As shown in fig. 2 and 3, in the present embodiment, there are two detection probes 11, and the two detection probes 11 are respectively located on the front and rear sides of the slider 41. When any one of the detecting probes 11 is in contact with the trolley conductor 6, the contact detecting module 1 sends a contact signal to the first-stage signal judging module 21, so that the monitoring capability of the current collector wear monitoring device is effectively enhanced. Meanwhile, as shown in fig. 1, there are two first relays 12 in the present embodiment, and the two first relays 12 are electrically connected to the two detection probes 11, respectively. When the detection probe 11 is brought into contact with the trolley wire 6, the first relay 12 electrically connected to the detection probe 11 is electrified, and the contact of the first relay 12 operates to electrify the second relay 211.

In this embodiment, the alarm 31 is an audible and visual alarm. When the alarm 31 is electrified in the embodiment, the alarm can give out sound and light alarm to remind the working personnel to overhaul the current collector 4 in time.

As shown in fig. 1, in the present embodiment, the first relay 12 is electrically connected to the detection probe 11 through the first circuit breaker 13, so that the first circuit breaker 13 is used to control the on/off between the detection probe 11 and the first relay 12.

As shown in fig. 1, in the present embodiment, the first relay 12, the second relay 211, the third relay 221, and the alarm 31 are all connected to one phase line of the power supply 5, and the trolley line 6 is connected to the other phase line of the power supply 5. When the detection probe 11 is in contact with the trolley line 6, a voltage difference is generated at two ends of the detection probe 11, and the detection probe 11 is electrified; meanwhile, a voltage difference is generated between both ends of the first relay 12, and the first relay 12 is electrified. In the present embodiment, the detecting probe 11 plays a role of conducting electricity. When the sliding block 41 is worn to a set state, the detecting probe 11 will contact with the trolley line 6 and electrify the first relay 12, that is, the detecting probe 11 can sense whether the sliding block 41 is worn to the set state. The detecting probe 11 in this embodiment is also referred to as a sensor. In this embodiment, the detecting probe 11 is made of a conductive material and has a needle-like structure.

As shown in fig. 1, the first relay 12 is connected to the power source 5 through the second circuit breaker 7 in this embodiment. And the first circuit breaker 13 and the second circuit breaker 7 are both small circuit breakers in this embodiment.

In this embodiment, the surface of the slider 41 in contact with the trolley wire 6 is 10 mm beyond the surface of the detection probe 11 in contact with the trolley wire 6 in the wear direction. The specific monitoring process of the collector wear monitoring device in this embodiment is as follows: when the slide block 41 is abraded by 10 mm, the detection probe 11 is contacted with the sliding contact line 6, the two ends of the first relay 12 generate voltage, the first relay 12 is electrified, the contact of the first relay 12 acts to generate voltage at the two ends of the second relay 211 and electrify the second relay 211, when the electrification time of the second relay 211 reaches 2 seconds, the contact of the second relay 211 acts to generate voltage at the two ends of the third relay 221 and electrify the third relay 221, when the electrification time of the third relay 221 reaches 120 seconds, the contact of the third relay 221 acts to generate voltage at the two ends of the alarm 31, the alarm 31 is electrified and gives an audible and visual alarm to remind a worker that the collector 4 is abraded to a set state, the collector 4 needs to be overhauled, and the collector 4 is prevented from sliding along the sliding contact line 6 due to excessive abrasion, causing the trolley wire 6 to fall off. The current collector 4 in this embodiment is a current collector 4 of a bridge crane. The current collector abrasion monitoring device can monitor whether the sliding block 41 of the current collector 4 is abnormally abraded or not, can give an alarm in time and avoids the occurrence of faults. The current collector wear monitoring device in the embodiment is also called a trolley line falling prevention detection device of the bridge crane. The bridge crane can be used for ferrous metallurgy.

The second circuit breaker 7 in this embodiment is a power supply circuit breaker. The first relay 12 is an intermediate relay, and the specific manufacturer is schneider, and the model is: CAD32Q7C, AC380V 50 Hz. The second relay 211 is also called a gas-bag type time delay auxiliary contact group, and is manufactured by schneider, and has the following model: and LADT2, power-on delay, delay 1-30 s. The third relay 221 is an alarm relay, also called a gas bag type time delay auxiliary contact group, and has a model number of: LADT4, power-on delay, delay 10-180 s.

The current collector abrasion monitoring device is a crane current collector abrasion detection structure and an abnormity alarm electrical system, and is mainly applied to bridge cranes which are used under the conditions of poor technical conditions, severe environments and frequent use, and can also be applied to similar equipment with a current collector 4 device. This current collector wearing and tearing monitoring devices can effectively monitor the 41 wearing and tearing states of slider of current collector 4, reports to the police in advance for the current collector 4 that appears abnormal wear to avoid the emergence of accident, and remind the staff to arrange in advance to overhaul, avoid the interrupt of production commodity circulation, can be applied to the metallurgical field. This current collector wearing and tearing monitoring devices can effectively avoid bridge crane's wiping line 6 to fall the economic loss who brings.

When the slip ring has slight burrs, the adopted treatment method comprises the following steps: the surface treatment is carried out by leveling the file on the slip ring, so that the maintenance time of the slip ring can be reduced.

In addition, the bridge crane power supply mode designed at home at first is for grinding the electric channel, and its security is poor. The state has been changed to design JDC protective safety slide-contact lines concentrated by adopting '9030-371' construction department standard diagrams. The usage amount of the domestic safe type sliding contact line relay accounts for more than 90%, so the current collector abrasion monitoring device has a wide market. Meanwhile, when the current collector abrasion monitoring device is applied, the design of the current collector 4 of the original crane can not be changed, and only one set of monitoring device needs to be additionally arranged on the basis of the original current collector 4. Meanwhile, the current collector abrasion monitoring device is simple in structure, light and low in cost. And the current collector abrasion monitoring device is convenient to install and disassemble, needs short downtime and has better practicability.

After the monitoring device is used, the wear state of the current collector 4 can be conveniently monitored online timely and effectively, early warning is carried out in advance when the state is degraded, and preventive state overhaul investigation is carried out; the accident that the trolley line 6 falls caused by the abnormity of the current collector 4 of the crane is prevented and reduced, and the equipment accident operation loss is reduced. Therefore, the monitoring device can effectively remind operators and operators to replace the current collector 4 in time, and accidents are avoided.

In conclusion, the present invention effectively overcomes various disadvantages of the prior art and has high industrial utilization value.

The foregoing embodiments are merely illustrative of the principles and utilities of the present invention and are not intended to limit the invention. Any person skilled in the art can modify or change the above-mentioned embodiments without departing from the spirit and scope of the present invention. Accordingly, it is intended that all equivalent modifications or changes which can be made by those skilled in the art without departing from the spirit and technical spirit of the present invention be covered by the claims of the present invention.

Claims

1. A collector wear monitoring device, comprising: the device comprises a contact detection module (1), a signal judgment unit (2) connected with the contact detection module (1) and an alarm module (3) connected with the signal judgment unit (2), wherein the contact detection module (1) comprises a detection probe (11) arranged on a current collector (4), and when a sliding block (41) of the current collector (4) is worn to a set state, the detection probe (11) is contacted with a sliding contact line (6); when the detection probe (11) is in contact with the sliding contact line (6), the contact detection module (1) sends a contact signal to the signal judgment unit (2); the signal judging unit (2) judges whether the contact signal is a wear signal, and when the signal judging unit (2) judges that the contact signal is the wear signal, the signal judging unit (2) sends an alarm signal to the alarm module (3), and the alarm module (3) gives an alarm; the signal judging unit (2) comprises a first-stage signal judging module (21) connected with the contact detection module (1) and a second-stage signal judging module (22) connected with the first-stage signal judging module (21), and the alarm module (3) is connected with the second-stage signal judging module (22); when the detection probe (11) is in contact with the sliding contact line (6), the contact detection module (1) sends a contact signal to the first-stage signal judgment module (21); the first-stage signal judgment module (21) judges whether the contact signal is a wear signal, when the first-stage signal judgment module (21) judges that the contact signal is the wear signal, the first-stage signal judgment module (21) sends the contact signal to the second-stage signal judgment module (22), the second-stage signal judgment module (22) judges whether the contact signal is the wear signal, and when the second-stage signal judgment module (22) judges that the contact signal is the wear signal, the second-stage signal judgment module (22) sends an alarm signal to the alarm module (3); the contact detection module (1) further comprises a first relay (12) electrically connected with the detection probe (11), the first-stage signal judgment module (21) comprises a second relay (211) electrically connected with the first relay (12), the second relay (211) is a time delay relay, the second-stage signal judgment module (22) comprises a third relay (221) electrically connected with the second relay (211), the third relay (221) is a time delay relay, and the alarm module (3) comprises an alarm (31) electrically connected with the third relay (221); the number of the detection probes (11) is two, and the two detection probes (11) are respectively positioned on the front side and the rear side of the sliding block (41); the number of the first relays (12) is two, and the two first relays (12) are respectively and electrically connected with the two detection probes (11); the first relay (12) is electrically connected with the detection probe (11) through a first circuit breaker (13).

2. The collector wear monitoring device of claim 1, wherein: the alarm (31) is an audible and visual alarm.