CN201756427U - Mining explosion-proof variable-frequency hoist - Google Patents
Mining explosion-proof variable-frequency hoist Download PDFInfo
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- CN201756427U CN201756427U CN2010202579976U CN201020257997U CN201756427U CN 201756427 U CN201756427 U CN 201756427U CN 2010202579976 U CN2010202579976 U CN 2010202579976U CN 201020257997 U CN201020257997 U CN 201020257997U CN 201756427 U CN201756427 U CN 201756427U
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- 238000005065 mining Methods 0.000 title claims description 21
- 238000006243 chemical reaction Methods 0.000 claims description 17
- 230000001105 regulatory effect Effects 0.000 claims description 8
- 238000012544 monitoring process Methods 0.000 claims description 5
- 239000003245 coal Substances 0.000 abstract description 5
- 238000001514 detection method Methods 0.000 abstract description 2
- 238000000034 method Methods 0.000 description 5
- 230000008569 process Effects 0.000 description 5
- 238000004519 manufacturing process Methods 0.000 description 3
- 238000004804 winding Methods 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
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- 238000002955 isolation Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
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Abstract
The utility model relates to coal mine underground conveying equipment, belongs to the technical field of electronic devices, and particularly relates to a coal mine underground explosion-proof variable-frequency hoist. The hoist is characterized by comprising a roller shaft encoder, a motor shaft encoder, a stroke switch, a PLC controller, a console, a variable-frequency speed governor box, a main motor, a hoist host and the like, wherein the roller shaft encoder, the motor shaft encoder, the console and the variable-frequency speed governor box form a signal detection, demand and feedback portion, and processing signals are inputted into the PLC control box so as to control the variable-frequency speed governor box to output voltage with different frequencies, thereby realizing stepless speed regulation of the main motor. Compared with the prior art, the explosion-proof variable-frequency hoist realizes stepless speed regulation, and is large in starting torque, high in loading capacity, safe and reliable in operation and wider in application prospect.
Description
Technical Field
The utility model relates to a colliery is transportation equipment in pit belongs to electron device technical field, refers in particular to an explosion-proof frequency conversion winch that colliery was used in pit.
Background
The mining hoisting winch is one of key devices in the field of mining industry, and the main task of the mining hoisting winch is to hoist ores and coal underground and convey personnel, equipment and materials, so that the mining hoisting winch has high requirements on all parts, particularly an electric control system.
At present, an electric control system of a mining hoisting winch generally adopts a winding type motor rotor series resistance mode for speed regulation, and the system has the following defects:
1. a large amount of electric energy is consumed on a slip resistor, so that serious energy waste is caused, and meanwhile, the coal mine underground coal mine with gas is extremely unsafe to operate.
2. In a control system, the failure rate is high, a contactor, a relay, a winding motor carbon brush and the like are easy to damage, the maintenance workload is large, and the production efficiency is directly influenced.
3. In the low-speed and crawling stages, speed control needs to be realized by relying on a brake shoe friction roller, and particularly when the load changes, constant speed reduction control is difficult to realize, so that the speed regulation is discontinuous, and the speed control performance is poor.
4. The starting and gear shifting impact current is large, so that great mechanical impact is caused, the service life of the motor is shortened, and the phenomenon of 'derailment' is easy to occur.
5. The automation degree is not high, the mining cost is increased, and the yield is influenced.
In practical application, how to design a novel mining hoisting winch with high automation degree enables underground operation to be safe and reliable, production cost to be effectively reduced, production efficiency to be improved, and the novel mining hoisting winch becomes a technical problem to be solved by technical personnel in the field.
Disclosure of Invention
The utility model aims at providing a mining explosion-proof frequency conversion winch, its weak point of having solved wire-wound motor belt resistance and dragging the winch is a can be safely, reliably, energy-conservingly in the colliery novel winch of operation in the pit.
In order to achieve the above purpose, the utility model adopts the following technical scheme:
the mining explosion-proof variable frequency winch mainly comprises a drum shaft encoder, a motor shaft encoder, a travel switch, a PLC control box, a console, a variable frequency speed regulating box, a main motor and a winch main machine part; the PLC control box is respectively connected with the control console, the variable-frequency speed regulating box and the motor shaft encoder.
Preferably, the drum shaft encoder is installed at one end coaxial with the drum in the winch main unit, the motor shaft encoder is installed at the end coaxial with the main motor, and the stroke switch is installed on the depth indicator, thereby constituting a signal collecting unit.
Preferably, the console inputs a given signal.
Preferably, the PLC control box compares and calculates signals given by the console and signals fed back by the frequency converter according to signals collected by the drum shaft encoder, the motor shaft encoder and the travel switch, and then transmits the signals to the frequency conversion speed regulating box.
Preferably, the variable frequency speed regulation box outputs different voltage frequencies to control the starting, accelerating, uniform speed, decelerating, stopping and braking of the main motor.
Preferably, the PLC control box includes a control and monitoring system, an operating PLC and an auxiliary PLC.
Preferably, the variable-frequency speed regulation box further comprises a power supply connected with the variable-frequency speed regulation box.
Preferably, one end of the variable-frequency speed regulation box is connected to the PLC control box, and the other end of the variable-frequency speed regulation box is connected with the main motor.
Preferably, the main motor is also connected with the winch main body part and the motor shaft encoder.
Preferably, the variable-frequency speed regulation box further comprises a power supply connected with the variable-frequency speed regulation box.
Compared with the prior art, the utility model has the advantages of as follows:
1. energy saving, safety, reliability and high automation degree.
2. The starting torque is large, and the load capacity is strong.
3. The stepless speed regulation of the motor is realized, the acceleration and deceleration process is stable, the current impact is small, and the mechanical impact strength is reduced.
Drawings
FIG. 1: the utility model discloses a mining explosion-proof frequency conversion winch system block diagram.
In the figure: 1. a drum shaft encoder; 2. a motor shaft encoder; 3. a travel switch; 4. a PLC control box; 4A, working PLC; 4B, an auxiliary PLC; 4C, a control and monitoring system; 5. a console; 6. a variable frequency speed regulating box; 7. a main motor; 8. a winch host portion; 9. a power source.
The specific implementation mode is as follows:
the following detailed description of the components of the present invention is made with reference to the accompanying drawings:
as shown in fig. 1, the mining explosion-proof frequency conversion winch mainly comprises a drum shaft encoder 1, a motor shaft encoder 2, a travel switch 3, a PLC control box 4, a console 5, a frequency conversion speed regulation box 6, a main motor 7 and a winch main machine part 8; wherein,
the drum shaft encoder 1 is installed at one end coaxial with the drum in the winch main body part 8, the motor shaft encoder 2 is installed at the end coaxial with the main motor 7, and the travel switch 3 is installed on a depth indicator (for example, a memorial archway type depth indicator), thereby constituting a signal acquisition part. The shaft encoders 1, 2 and the travel switch 3 detect the rope speed, the position of the container and perform safety precaution detection.
The PLC control box 4 is respectively connected with the control console 5, the variable-frequency speed-adjusting box 6 and the motor shaft encoder 2, and mainly comprises a control and monitoring system C4, a working PLC A4 and an auxiliary PLC B4.
The control and monitoring system C4 is used for realizing signal isolation and conversion, hardware safety control, oil pump control, working gate safety gate control, emergency operation and the like; the working PLC A4 is used for realizing manual/automatic control, lifting control and locking, speed setting and control, working brake and safety brake control of the winch and has the functions of digital depth prompt and software safety guarantee; the auxiliary PLC is used for realizing position control, continuous speed protection and software safety guarantee, and can be used as a backup for lifting control.
The console 5 is operated by an operator, can realize operation control, and can indicate the state of the winch on a display interface, including process traffic indication, digital depth indication, fault indication and the like.
One end of the variable-frequency speed-adjusting box 6 is connected to the PLC control box 4, and the other end is connected with the main motor 7, and the variable-frequency speed-adjusting box is used for regulating and controlling the rotating speed of the main motor 7 under the action of a control signal transmitted by the PLC control box 4, generating a feedback signal and transmitting the feedback signal to the PLC control box 4.
The main motor 7 is also connected with the winch main body part 8 and the motor shaft encoder 2 and used for adjusting the operation of the winch main body part 8 according to the rotating speed and feeding back the rotating speed of the main motor 7 to the PLC control box 4 through the motor shaft encoder 2.
The winch main machine part 8 realizes the direct control of the winch and simultaneously feeds back the operation condition to the PLC control box 4.
The mining explosion-proof variable frequency winch also comprises a power supply 9 connected with the variable frequency speed regulating box 6 and used for providing a three-phase alternating current power frequency power supply signal for the variable frequency speed regulating box 6.
The operation and operation process of the present invention are briefly described as follows:
an operator inputs a control signal and a given winch operation expected value from the console 5 to realize the operation of the winch in the processes of starting, accelerating, uniform speed, decelerating, stopping and braking; the PLC control box 4 processes the signals collected by the drum shaft encoder 1, the motor shaft encoder 2, the travel switch 3 and the like and the signals fed back by the variable-frequency speed regulation box 6, compares the signals with the preset values given by the console 5, generates corresponding control signals after corresponding algorithm operation, and transmits the control signals to the variable-frequency speed regulation box 6, and the variable-frequency speed regulation box 6 outputs randomly adjustable three-phase alternating-current variable-frequency voltage to control various speeds of the main motor 7.
The present invention has been described above by way of example, but the present invention is not limited to the above-mentioned embodiments, and any modification or variation based on the present invention is within the scope of the present invention.
Claims (6)
1. The mining explosion-proof frequency conversion winch is characterized by comprising a drum shaft encoder (1), a motor shaft encoder (2), a travel switch (3), a PLC control box (4), an operating console (5), a frequency conversion speed regulation box (6), a main motor (7) and a winch main machine part (8); the PLC control box (4) is respectively connected with the control console (5), the variable-frequency speed regulating box (6) and the motor shaft encoder (2).
2. The mining explosion-proof frequency conversion winch according to claim 1, characterized in that the drum shaft encoder (1) is installed at one end coaxial with the drum in the winch main body part (8), the motor shaft encoder (2) is installed at the end coaxial with the main motor (7), and the stroke switch (3) is installed on a depth indicator, thereby constituting a signal acquisition part.
3. The mining explosion-proof frequency-conversion winch according to claim 1, characterized in that the PLC control box (4) comprises a control and monitoring system (C4), a working PLC (A4) and an auxiliary PLC (B4).
4. The mining explosion-proof frequency conversion winch according to claim 1, characterized in that the frequency conversion speed regulation box (6) is connected to the PLC control box (4) at one end and connected to the main motor (7) at the other end.
5. The mining explosion-proof frequency conversion winch according to claim 1, characterized in that the main motor (7) is also connected with the winch main body part (8) and the motor shaft encoder (2).
6. The mining explosion-proof frequency conversion winch according to claim 1, characterized by further comprising a power supply (9) connected with the frequency conversion speed regulation box (6).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010202579976U CN201756427U (en) | 2010-07-14 | 2010-07-14 | Mining explosion-proof variable-frequency hoist |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010202579976U CN201756427U (en) | 2010-07-14 | 2010-07-14 | Mining explosion-proof variable-frequency hoist |
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| Publication Number | Publication Date |
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| CN201756427U true CN201756427U (en) | 2011-03-09 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2010202579976U Expired - Fee Related CN201756427U (en) | 2010-07-14 | 2010-07-14 | Mining explosion-proof variable-frequency hoist |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103043553A (en) * | 2013-01-15 | 2013-04-17 | 镇江赛尔尼柯自动化有限公司 | System and method for controlling hydrological winch |
| CN103288000A (en) * | 2013-06-28 | 2013-09-11 | 苏州工业园区职业技术学院 | Control system and method of bucket elevator |
| CN104876144A (en) * | 2014-02-27 | 2015-09-02 | 徐州苏煤矿山设备制造有限公司 | Controlling device and method for frequency conversion and speed regulation of mining transportation winch |
| CN114590731A (en) * | 2022-05-11 | 2022-06-07 | 新风光电子科技股份有限公司 | Self-adaptive coal mine hoisting winch frequency conversion method |
-
2010
- 2010-07-14 CN CN2010202579976U patent/CN201756427U/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103043553A (en) * | 2013-01-15 | 2013-04-17 | 镇江赛尔尼柯自动化有限公司 | System and method for controlling hydrological winch |
| CN103288000A (en) * | 2013-06-28 | 2013-09-11 | 苏州工业园区职业技术学院 | Control system and method of bucket elevator |
| CN103288000B (en) * | 2013-06-28 | 2015-10-28 | 苏州工业园区职业技术学院 | The control system of chain bucket and control method |
| CN104876144A (en) * | 2014-02-27 | 2015-09-02 | 徐州苏煤矿山设备制造有限公司 | Controlling device and method for frequency conversion and speed regulation of mining transportation winch |
| CN104876144B (en) * | 2014-02-27 | 2017-04-26 | 徐州苏煤矿山设备制造有限公司 | Controlling device and method for frequency conversion and speed regulation of mining transportation winch |
| CN114590731A (en) * | 2022-05-11 | 2022-06-07 | 新风光电子科技股份有限公司 | Self-adaptive coal mine hoisting winch frequency conversion method |
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| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20110309 Termination date: 20180714 |
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| CF01 | Termination of patent right due to non-payment of annual fee |