CN104961065A - Coal mine low voltage winch multifunctional combination switch work circuit - Google Patents
Coal mine low voltage winch multifunctional combination switch work circuit Download PDFInfo
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- CN104961065A CN104961065A CN201510282867.5A CN201510282867A CN104961065A CN 104961065 A CN104961065 A CN 104961065A CN 201510282867 A CN201510282867 A CN 201510282867A CN 104961065 A CN104961065 A CN 104961065A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66D—CAPSTANS; WINCHES; TACKLES, e.g. PULLEY BLOCKS; HOISTS
- B66D1/00—Rope, cable, or chain winding mechanisms; Capstans
- B66D1/28—Other constructional details
- B66D1/40—Control devices
- B66D1/48—Control devices automatic
- B66D1/485—Control devices automatic electrical
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66D—CAPSTANS; WINCHES; TACKLES, e.g. PULLEY BLOCKS; HOISTS
- B66D1/00—Rope, cable, or chain winding mechanisms; Capstans
- B66D1/54—Safety gear
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Gas-Insulated Switchgears (AREA)
- Keying Circuit Devices (AREA)
Abstract
The invention relates to a coal mine low voltage winch multifunctional combination switch work circuit, belongs to the combination switch work circuit technical field, and the combination switch work circuit can realize intelligent control of the winch, is safe in working, and simple in operation; the coal mine low voltage winch multifunctional combination switch work circuit comprises a mine high explosive switch, a mine explosion suppression type dry transformer, a multifunctional combination switch, a winch motor, an internal contracting brake motor, an explosion-proof bell, an explosion-proof audible-visual annunciator and a lighting power supply; the multifunctional combination switch comprises a low voltage permanent magnetism feed branch, a winch control branch and a lighting power supply control branch; the coal mine low voltage winch multifunctional combination switch work circuit is suitable for the combination switch technical field.
Description
Technical field
Colliery of the present invention low pressure winch Multifunctional combination switching pull up circuit, belongs to the technical field of combined switch pull up circuit.
Background technology
Along with completing of coal resources merging and reorganization; coal industry defines large group and the general layout of depositing; colliery grouping of the world economy more, scale; the coal production of single pithead is increasing; along with the increase of coal production; the winch of support equipment, transport of materials uses more and more, how to ensure the attended operation of the reliable and stable operation of winch, minimizing and simplified apparatus, reaches personnel reduction and enlargement, keeping the safety in production seems particularly important.
For adapting to the actual demand of coal mine user, on the basis of winch Successful utilization, mine flameproof and intrinsic safety type winch combination control box arises at the historic moment; It achieve the Based Intelligent Control of winch, reach safety in production object that is simple to operate, that protect comprehensively, cut payroll to improve efficiency.
Summary of the invention
The present invention overcomes the deficiency that prior art exists, and technical matters to be solved realizes winch Based Intelligent Control, safe operation and colliery low pressure winch Multifunctional combination switching pull up circuit simple to operate for providing a kind of.
In order to solve the problems of the technologies described above, the technical solution used in the present invention is: colliery low pressure winch Multifunctional combination switching pull up circuit, comprise: mining high-explosive switch, flameproof dry type transformer, Multifunctional combination switching, winch motor, band-type brake motor, explosion-proof electric bell, explosion-proof combined aural and visual alarm and mains lighting supply, described Multifunctional combination switching comprises: low voltage permanent magnetic feed leg, winch controlling brancher and mains lighting supply controlling brancher, be connected with colliery high tension supply after the input end of described flameproof dry type transformer is connected in series mining high-explosive switch, the mouth of described flameproof dry type transformer is connected with the input end of low voltage permanent magnetic feed leg, the mouth of described low voltage permanent magnetic feed leg is connected with the input end of mains lighting supply controlling brancher with the input end of winch controlling brancher respectively, the mouth of described winch controlling brancher is connected with the power end of band-type brake motor with the power end of winch motor respectively, the mouth of described mains lighting supply controlling brancher respectively with the power end of explosion-proof electric bell, the power end of explosion-proof combined aural and visual alarm is connected with the power end of mains lighting supply.
Described low voltage permanent magnetic feed leg comprises low voltage vacuum circuit breaker for permanent, the first supply transformer T1 and intelligent feeder protection equipment ZB1, described winch controlling brancher comprises the first contactless switch and the second contactless switch, and described mains lighting supply controlling brancher comprises the first disconnector, three phase mains voltage transformer and the 3rd contactless switch;
The input end of described low voltage vacuum circuit breaker for permanent is also connected with the mouth of flameproof dry type transformer after connecing the input end of the first supply transformer T1, the mouth of described first supply transformer T1 is connected with the power end of intelligent feeder protection equipment ZB1, the described intelligent control end of feeder protection equipment ZB1 is connected with the control end of low voltage vacuum circuit breaker for permanent, the mouth of described low voltage vacuum circuit breaker for permanent is connected with the input end of the second disconnector, the mouth of described second disconnector also connects the input end of the first disconnector, the input end of the first contactless switch is connected with the input end of second source voltage transformer T2 with after the input end of the second contactless switch, the mouth of described second source voltage transformer T2 is connected with the power end of combined switch protector ZB2, first control end of described combined switch protector ZB2 is connected with the control end of the first contactless switch, second control end of described combined switch protector ZB2 is connected with the control end of the second contactless switch, 3rd control end of described combined switch protector ZB2 is connected with the control end of the 3rd contactless switch, 4th control end of described combined switch protector ZB2 is connected with the control end of explosion-proof electric bell, 5th control end of described combined switch protector ZB2 is connected with the control end of explosion-proof combined aural and visual alarm, the mouth of described first disconnector is connected with the input end of three phase mains voltage transformer, the mouth of described three phase mains voltage transformer is connected with the input end of the 3rd contactless switch, the mouth of described 3rd contactless switch respectively with the power end of explosion-proof electric bell, the power end of explosion-proof combined aural and visual alarm is connected with the power end of mains lighting supply, the mouth of described first contactless switch is with the mouth of the second contactless switch and connect and to be connected with the power end of band-type brake motor with the power end of winch motor respectively afterwards.
The power end of described winch motor is by explosion-proof wiring terminal U1, V1, W1 is connected with the mouth of the second contactless switch with the mouth of the first contactless switch, the power end of described band-type brake motor is by explosion-proof wiring terminal U2, V2, W2 is connected with the mouth of the second contactless switch with the mouth of the first contactless switch, the power end of described mains lighting supply is by explosion-proof wiring terminal U3, V3, W3 is connected with the mouth of the 3rd contactless switch, the power end of described explosion-proof electric bell is by explosion-proof wiring terminal U4, V4 is connected with the mouth of the 3rd contactless switch, the power end of described explosion-proof combined aural and visual alarm is by explosion-proof wiring terminal U5, V5 is connected with the mouth of the 3rd contactless switch.
The input end of described low voltage vacuum circuit breaker for permanent is also connected with the mouth of flameproof dry type transformer by explosion-proof wiring terminal U6, V6, W6 after connecing the input end of the first supply transformer T1, the mouth of described low voltage vacuum circuit breaker for permanent is connected with explosion-proof wiring terminal U7, V7, W7, the input end of described second disconnector is connected with explosion-proof wiring terminal U8, V8, W8, and described explosion-proof wiring terminal U7, V7, W7 and explosion-proof wiring terminal U8, V8, W8 are by wire short circuit.
Described first contactless switch and the second contactless switch are AC contactor, and described second disconnector is insulating phase-change switch, and described colliery high tension supply is 6KV high tension supply, and described colliery high tension supply is 10KV high tension supply.
The present invention compared with prior art has following beneficial effect:
Colliery low pressure winch Multifunctional combination switching pull up circuit in the present invention, comprise: mining high-explosive switch, flameproof dry type transformer, Multifunctional combination switching, winch motor, band-type brake motor, explosion-proof electric bell, explosion-proof combined aural and visual alarm and mains lighting supply, described Multifunctional combination switching comprises: low voltage permanent magnetic feed leg, winch controlling brancher and mains lighting supply controlling brancher, be connected with colliery high tension supply after the input end of described flameproof dry type transformer is connected in series mining high-explosive switch, the mouth of described flameproof dry type transformer is connected with the input end of low voltage permanent magnetic feed leg, the mouth of described low voltage permanent magnetic feed leg is connected with the input end of mains lighting supply controlling brancher with the input end of winch controlling brancher respectively, the mouth of described winch controlling brancher is connected with the power end of band-type brake motor with the power end of winch motor respectively, the mouth of described mains lighting supply controlling brancher respectively with the power end of explosion-proof electric bell, the power end of explosion-proof combined aural and visual alarm is connected with the power end of mains lighting supply, the present invention is by integrated to low voltage vacuum circuit breaker for permanent, mains lighting supply, explosion-proof electric bell and explosion-proof combined aural and visual alarm, the back-up protection realizing winch is integrated with the logic controlling to export, for the safety in production in colliery brings guarantee, whole circuit structure is succinct, easy to install, practical.
Accompanying drawing explanation
Below in conjunction with accompanying drawing, the present invention will be further described in detail.
Fig. 1 is electrical block diagram of the present invention;
In figure: 1 is mining high-explosive switch, 2 is flameproof dry type transformer, and 3 is Multifunctional combination switching, 4 is winch motor, and 5 is band-type brake motor, and 6 is explosion-proof electric bell, 7 is explosion-proof combined aural and visual alarm, and 8 is mains lighting supply, and 9 is colliery high tension supply, 10 is low voltage vacuum circuit breaker for permanent, and 11 is the first contactless switch, and 12 is the second contactless switch, 13 is the first disconnector, 14 is three phase mains voltage transformer, and 15 is the 3rd contactless switch, and 16 is the second disconnector.
Detailed description of the invention
As shown in Figure 1, colliery low pressure winch Multifunctional combination switching pull up circuit, comprise: mining high-explosive switch 1, flameproof dry type transformer 2, Multifunctional combination switching 3, winch motor 4, band-type brake motor 5, explosion-proof electric bell 6, explosion-proof combined aural and visual alarm 7 and mains lighting supply 8, described Multifunctional combination switching 3 comprises: low voltage permanent magnetic feed leg, winch controlling brancher and mains lighting supply controlling brancher, be connected with colliery high tension supply 9 after the input end of described flameproof dry type transformer 2 is connected in series mining high-explosive switch 1, the mouth of described flameproof dry type transformer 2 is connected with the input end of low voltage permanent magnetic feed leg, the mouth of described low voltage permanent magnetic feed leg is connected with the input end of mains lighting supply controlling brancher with the input end of winch controlling brancher respectively, the mouth of described winch controlling brancher is connected with the power end of band-type brake motor 5 with the power end of winch motor 4 respectively, the mouth of described mains lighting supply controlling brancher respectively with the power end of explosion-proof electric bell 6, the power end of explosion-proof combined aural and visual alarm 7 is connected with the power end of mains lighting supply 8.
Described low voltage permanent magnetic feed leg comprises low voltage vacuum circuit breaker for permanent 10, first supply transformer T1 and intelligent feeder protection equipment ZB1, described winch controlling brancher comprises the first contactless switch 11 and the second contactless switch 12, and described mains lighting supply controlling brancher comprises the first disconnector 13, three phase mains voltage transformer 14 and the 3rd contactless switch 15; the input end of described low voltage vacuum circuit breaker for permanent 10 is also connected with the mouth of flameproof dry type transformer 2 after connecing the input end of the first supply transformer T1, the mouth of described first supply transformer T1 is connected with the power end of intelligent feeder protection equipment ZB1, the control end of described intelligent feeder protection equipment ZB1 is connected with the control end of low voltage vacuum circuit breaker for permanent 10, the mouth of described low voltage vacuum circuit breaker for permanent 10 is connected with the input end of the second disconnector 16, the mouth of described second disconnector 16 also connects the input end of the first disconnector 13, the input end of the first contactless switch 11 is connected with the input end of second source voltage transformer T2 with after the input end of the second contactless switch 12, the mouth of described second source voltage transformer T2 is connected with the power end of combined switch protector ZB2, first control end of described combined switch protector ZB2 is connected with the control end of the first contactless switch 11, second control end of described combined switch protector ZB2 is connected with the control end of the second contactless switch 12, 3rd control end of described combined switch protector ZB2 is connected with the control end of the 3rd contactless switch 15, 4th control end of described combined switch protector ZB2 is connected with the control end of explosion-proof electric bell 6, 5th control end of described combined switch protector ZB2 is connected with the control end of explosion-proof combined aural and visual alarm 7, the mouth of described first disconnector 13 is connected with the input end of three phase mains voltage transformer 14, the mouth of described three phase mains voltage transformer 14 is connected with the input end of the 3rd contactless switch 15, the mouth of described 3rd contactless switch 15 respectively with the power end of explosion-proof electric bell 6, the power end of explosion-proof combined aural and visual alarm 7 is connected with the power end of mains lighting supply 8, the mouth of described first contactless switch 11 is with the mouth of the second contactless switch 12 and connect and to be connected with the power end of band-type brake motor 5 with the power end of winch motor 4 respectively afterwards.
Particularly, when flameproof dry type transformer 2 out-put supply, then Multifunctional combination switching 3 obtains electric, end of incoming cables U6, V6, W6 of described low voltage vacuum circuit breaker for permanent 10 obtain electric, first supply transformer T1 obtains electric, intelligence feeder protection equipment ZB1 obtains electric work, and control low voltage vacuum circuit breaker for permanent 10 combined floodgate when ZB1 detects normal and run, then connection terminal U8, V8, W8, U7, V7, W7 obtains electric; At this moment closed second disconnector 16, then the input end of the first contactless switch 11, second contactless switch 12 and the input end of the first disconnector 13 and second source voltage transformer T2 obtain electric, the input end of closed first disconnector, 13 three phase mains voltage transformers 14 obtains electric, the mouth of three phase mains voltage transformer 14 and the input end of the 3rd contactless switch 15 obtain electric, and second source voltage transformer T2 obtains electric, and combined switch protector ZB2 obtains electric; At this moment combined switch protector ZB2 obtains electric work, control the 3rd contactless switch 15 according to composite design switch protector ZB2 to start, ensure explosion-proof electric bell 6, explosion-proof combined aural and visual alarm 7, mains lighting supply 8 electric being in can mode of operation, if the 3rd contactless switch 15 does not start, combined switch protector ZB2 obtains electric, control the first contactless switch 11 or the second contactless switch 12 fail to start adhesive, ensure that the power supply supply running explosion-proof electric bell 6, explosion-proof combined aural and visual alarm 7, mains lighting supply 8 once winch; If at this moment combined switch protector ZB2 controls the 3rd contactless switch 15 starting operation; then the first contactless switch 11 or the second contactless switch 12 can start adhesive; according to design when starting first contactless switch 11 or the second contactless switch 12; combined switch protector ZB2 controls explosion-proof electric bell 6, explosion-proof combined aural and visual alarm 7 work sends instruction alarm; holdee is reminded to note; control the first contactless switch 11 after the delay or the second contactless switch 12 starts adhesive; ensure that the program reasonableness of operation, prevent the generation of contingency.
The power end of described winch motor 4 is by explosion-proof wiring terminal U1, V1, W1 is connected with the mouth of the second contactless switch 12 with the mouth of the first contactless switch 11, the power end of described band-type brake motor 5 is by explosion-proof wiring terminal U2, V2, W2 is connected with the mouth of the second contactless switch 12 with the mouth of the first contactless switch 11, the power end of described mains lighting supply 8 is by explosion-proof wiring terminal U3, V3, W3 is connected with the mouth of the 3rd contactless switch 15, the power end of described explosion-proof electric bell 6 is by explosion-proof wiring terminal U4, V4 is connected with the mouth of the 3rd contactless switch 15, the power end of described explosion-proof combined aural and visual alarm 7 is by explosion-proof wiring terminal U5, V5 is connected with the mouth of the 3rd contactless switch 15, the input end of described low voltage vacuum circuit breaker for permanent 10 is also connected with the mouth of flameproof dry type transformer 2 by explosion-proof wiring terminal U6, V6, W6 after connecing the input end of the first supply transformer T1, the mouth of described low voltage vacuum circuit breaker for permanent 10 is connected with explosion-proof wiring terminal U7, V7, W7, the input end of described second disconnector 16 is connected with explosion-proof wiring terminal U8, V8, W8, and described explosion-proof wiring terminal U7, V7, W7 and explosion-proof wiring terminal U8, V8, W8 are by wire short circuit, described explosion-proof wiring terminal U6, V6, W6, U7, V7, W7 is arranged in an independent anti-explosion box body, described explosion-proof wiring terminal U1, V1, W1, U2, V2, W2, U3, V3, W3, U4, V4, U5, V5, U8, V8, W8, be arranged in an independent anti-explosion box body, described low voltage vacuum circuit breaker for permanent 10, first supply transformer T1, the low voltage permanent magnetic feed leg of intelligence feeder protection equipment ZB1 composition is arranged in an independent anti-explosion box body, described first contactless switch 11, second contactless switch 12, combined switch protector ZB2, second source voltage transformer T2, first disconnector 13, second disconnector 16, three phase mains voltage transformer 14, the winch controlling brancher that 3rd contactless switch 15 forms and Lighting control branch road are arranged in an independent anti-explosion box body, anti-explosion box body meets the requirement of coal mine flame-proof intrinsic safety type equipment, above-mentioned four anti-explosion box body Combination Welding are arranged on public dragging together and prize upper formation Multifunctional combination switching 3, and above-mentioned explosion-resistant enclosure meets the requirement of coal mine flame-proof intrinsic safety type equipment.
Described first contactless switch 11 and the second contactless switch 12 are AC contactor, and described second disconnector 16 is insulating phase-change switch, and described colliery high tension supply 9 is 6KV high tension supply, and described colliery high tension supply 9 is 10KV high tension supply.
The present invention is by low voltage vacuum circuit breaker for permanent, reversible electromagnetic starter, mains lighting supply, explosion-proof electric bell and explosion-proof combined aural and visual alarm integrated, the back-up protection being realized winch by singlechip technology is integrated with the logic controlling to export, for the safety in production in colliery brings guarantee, the present invention detection promptly and accurately can also judge the mode of operation of Multifunctional combination switching, whole circuit structure is succinct, easy to install, practical, safe in operation for coal mine winch runs and brings guarantee, reach the object of Safety of Coal Mine Production, there is outstanding substantive distinguishing features and significant progress, by reference to the accompanying drawings embodiments of the invention are explained in detail above, but the present invention is not limited to above-described embodiment, in the ken that those of ordinary skill in the art possess, also can makes various change under the prerequisite not departing from present inventive concept.
Claims (8)
1. colliery low pressure winch Multifunctional combination switching pull up circuit, it is characterized in that: comprising: mining high-explosive switch (1), flameproof dry type transformer (2), Multifunctional combination switching (3), winch motor (4), band-type brake motor (5), explosion-proof electric bell (6), explosion-proof combined aural and visual alarm (7) and mains lighting supply (8), described Multifunctional combination switching (3) comprising: low voltage permanent magnetic feed leg, winch controlling brancher and mains lighting supply controlling brancher;
The input end of described flameproof dry type transformer (2) is connected in series mining high-explosive switch (1) and is connected with colliery high tension supply (9) afterwards, the mouth of described flameproof dry type transformer (2) is connected with the input end of low voltage permanent magnetic feed leg, the mouth of described low voltage permanent magnetic feed leg is connected with the input end of mains lighting supply controlling brancher with the input end of winch controlling brancher respectively, the mouth of described winch controlling brancher is connected with the power end of band-type brake motor (5) with the power end of winch motor (4) respectively, the mouth of described mains lighting supply controlling brancher respectively with the power end of explosion-proof electric bell (6), the power end of explosion-proof combined aural and visual alarm (7) is connected with the power end of mains lighting supply (8).
2. colliery according to claim 1 low pressure winch Multifunctional combination switching pull up circuit, it is characterized in that: described low voltage permanent magnetic feed leg comprises low voltage vacuum circuit breaker for permanent (10), the first supply transformer T1 and intelligent feeder protection equipment ZB1, described winch controlling brancher comprises the first contactless switch (11) and the second contactless switch (12), and described mains lighting supply controlling brancher comprises the first disconnector (13), three phase mains voltage transformer (14) and the 3rd contactless switch (15);
The input end of described low voltage vacuum circuit breaker for permanent (10) is also connected with the mouth of flameproof dry type transformer (2) after connecing the input end of the first supply transformer T1, the mouth of described first supply transformer T1 is connected with the power end of intelligent feeder protection equipment ZB1, the control end of described intelligent feeder protection equipment ZB1 is connected with the control end of low voltage vacuum circuit breaker for permanent (10), the mouth of described low voltage vacuum circuit breaker for permanent (10) is connected with the input end of the second disconnector (16), the mouth of described second disconnector (16) also connects the input end of the first disconnector (13), the input end of the first contactless switch (11) is connected with the input end of second source voltage transformer T2 with after the input end of the second contactless switch (12), the mouth of described second source voltage transformer T2 is connected with the power end of combined switch protector ZB2, first control end of described combined switch protector ZB2 is connected with the control end of the first contactless switch (11), second control end of described combined switch protector ZB2 is connected with the control end of the second contactless switch (12), 3rd control end of described combined switch protector ZB2 is connected with the control end of the 3rd contactless switch (15), 4th control end of described combined switch protector ZB2 is connected with the control end of explosion-proof electric bell (6), 5th control end of described combined switch protector ZB2 is connected with the control end of explosion-proof combined aural and visual alarm (7), the mouth of described first disconnector (13) is connected with the input end of three phase mains voltage transformer (14), the mouth of described three phase mains voltage transformer (14) is connected with the input end of the 3rd contactless switch (15), the mouth of described 3rd contactless switch (15) respectively with the power end of explosion-proof electric bell (6), the power end of explosion-proof combined aural and visual alarm (7) is connected with the power end of mains lighting supply (8), the mouth of described first contactless switch (11) is with the mouth of the second contactless switch (12) and connect and to be connected with the power end of band-type brake motor (5) with the power end of winch motor (4) respectively afterwards.
3. colliery according to claim 2 low pressure winch Multifunctional combination switching pull up circuit, it is characterized in that: the power end of described winch motor (4) is by explosion-proof wiring terminal U1, V1, W1 is connected with the mouth of the second contactless switch (12) with the mouth of the first contactless switch (11), the power end of described band-type brake motor (5) is by explosion-proof wiring terminal U2, V2, W2 is connected with the mouth of the second contactless switch (12) with the mouth of the first contactless switch (11), the power end of described mains lighting supply (8) is by explosion-proof wiring terminal U3, V3, W3 is connected with the mouth of the 3rd contactless switch (15), the power end of described explosion-proof electric bell (6) is by explosion-proof wiring terminal U4, V4 is connected with the mouth of the 3rd contactless switch (15), the power end of described explosion-proof combined aural and visual alarm (7) is by explosion-proof wiring terminal U5, V5 is connected with the mouth of the 3rd contactless switch (15).
4. colliery according to claim 2 low pressure winch Multifunctional combination switching pull up circuit, it is characterized in that: the input end of described low voltage vacuum circuit breaker for permanent (10) by explosion-proof wiring terminal U6 after connecing the input end of the first supply transformer T1, V6, W6 is connected with the mouth of flameproof dry type transformer (2), the mouth of described low voltage vacuum circuit breaker for permanent (10) and explosion-proof wiring terminal U7, V7, W7 is connected, the input end of described second disconnector (16) and explosion-proof wiring terminal U8, V8, W8 is connected, described explosion-proof wiring terminal U7, V7, W7 and explosion-proof wiring terminal U8, V8, W8 is by wire short circuit.
5. colliery according to claim 2 low pressure winch Multifunctional combination switching pull up circuit, is characterized in that: described first contactless switch (11) and the second contactless switch (12) are AC contactor.
6. colliery according to claim 2 low pressure winch Multifunctional combination switching pull up circuit, is characterized in that: described second disconnector (16) is insulating phase-change switch.
7. colliery according to claim 1 low pressure winch Multifunctional combination switching pull up circuit, is characterized in that: described colliery high tension supply (9) is 6KV high tension supply.
8. colliery according to claim 1 low pressure winch Multifunctional combination switching pull up circuit, is characterized in that: described colliery high tension supply (9) is 10KV high tension supply.
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|---|---|---|---|
| CN201510282867.5A CN104961065B (en) | 2015-05-29 | 2015-05-29 | Coal mine low pressure winch Multifunctional combination switching operating circuit |
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|---|---|---|---|
| CN201510282867.5A CN104961065B (en) | 2015-05-29 | 2015-05-29 | Coal mine low pressure winch Multifunctional combination switching operating circuit |
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| CN104961065B CN104961065B (en) | 2018-10-23 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN105867293A (en) * | 2016-05-06 | 2016-08-17 | 山西际安电气有限公司 | Combination switch circuit for coal mine low-voltage belt |
| CN108668493A (en) * | 2017-03-28 | 2018-10-16 | 中国石油化工股份有限公司 | A kind of explosion-protection equipment of combined type pressurized enclosure |
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| CN103236742A (en) * | 2013-04-27 | 2013-08-07 | 山西际安电气有限公司 | Coal mine low-voltage permanent magnet multi-loop vacuum combined feed switching circuit |
| CN204173824U (en) * | 2014-10-24 | 2015-02-25 | 中国船舶重工集团公司七0四研究所 | A kind of apparatus for controlling of lifting for horizontal dried food and nuts replenishment device |
| CN204661206U (en) * | 2015-05-29 | 2015-09-23 | 山西际安电气有限公司 | A kind of colliery low pressure winch Multifunctional combination switching pull up circuit |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105867293A (en) * | 2016-05-06 | 2016-08-17 | 山西际安电气有限公司 | Combination switch circuit for coal mine low-voltage belt |
| CN105867293B (en) * | 2016-05-06 | 2023-05-23 | 山西际安电气有限公司 | Combined switch circuit for coal mine low-voltage belt |
| CN108668493A (en) * | 2017-03-28 | 2018-10-16 | 中国石油化工股份有限公司 | A kind of explosion-protection equipment of combined type pressurized enclosure |
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