CN112162521A - Automatically controlled real device of instructing of vertical hoisting equipment - Google Patents
Automatically controlled real device of instructing of vertical hoisting equipment Download PDFInfo
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- CN112162521A CN112162521A CN202010862045.5A CN202010862045A CN112162521A CN 112162521 A CN112162521 A CN 112162521A CN 202010862045 A CN202010862045 A CN 202010862045A CN 112162521 A CN112162521 A CN 112162521A
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- 229910000831 Steel Inorganic materials 0.000 claims abstract description 18
- 239000010959 steel Substances 0.000 claims abstract description 18
- 238000012549 training Methods 0.000 claims abstract description 18
- 238000012544 monitoring process Methods 0.000 claims description 14
- 239000003638 chemical reducing agent Substances 0.000 claims description 9
- 230000009467 reduction Effects 0.000 description 4
- 230000006872 improvement Effects 0.000 description 3
- 238000012423 maintenance Methods 0.000 description 3
- 238000006073 displacement reaction Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 230000007246 mechanism Effects 0.000 description 2
- 230000001133 acceleration Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000004134 energy conservation Methods 0.000 description 1
- 238000009776 industrial production Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
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- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
- G05B19/00—Programme-control systems
- G05B19/02—Programme-control systems electric
- G05B19/04—Programme control other than numerical control, i.e. in sequence controllers or logic controllers
- G05B19/05—Programmable logic controllers, e.g. simulating logic interconnections of signals according to ladder diagrams or function charts
- G05B19/054—Input/output
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- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09B—EDUCATIONAL OR DEMONSTRATION APPLIANCES; APPLIANCES FOR TEACHING, OR COMMUNICATING WITH, THE BLIND, DEAF OR MUTE; MODELS; PLANETARIA; GLOBES; MAPS; DIAGRAMS
- G09B9/00—Simulators for teaching or training purposes
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- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
- G05B2219/00—Program-control systems
- G05B2219/10—Plc systems
- G05B2219/11—Plc I-O input output
- G05B2219/1105—I-O
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Abstract
The invention discloses an electric control practical training device of vertical shaft hoisting equipment, which comprises a derrick, a wellhead, a shaft bottom, a winch room and a control cabinet, wherein the derrick is arranged on the shaft bottom; the derrick is arranged on a wellhead, the head sheave platform and the overwinding switch are arranged on the derrick, and the signal output end of the overwinding switch is connected with the signal input end of the head sheave platform; the well head is communicated with the well bottom through a shaft; a lifting container is arranged in the shaft, and a depth sensor is arranged on the lifting container; the winch house is arranged at the derrick, a lifting winch and an operation platform are arranged in the winch house, and the lifting winch is connected with the lifting winch through a head sheave platform of the derrick by arranging a steel wire rope; the control cabinet is provided with a start-stop button, the control cabinet is internally provided with a depth indicator and a lifting system, the signal input end of the depth indicator is respectively connected with the output ends of the depth sensor and the overwinding switch, the signal output end of the lifting system is connected with the signal input end of the lifting winch, and the signal output end of the start-stop button of the operating platform is connected with the signal input end of the lifting system.
Description
Technical Field
The invention belongs to the technical field of vertical shaft lifting equipment, and particularly relates to an electric control practical training device for vertical shaft lifting equipment.
Background
At present, a winch is a common machine in an industrial production process, and with the continuous improvement of a manufacturing technology of the winch, the continuous improvement of a processing material and the continuous improvement of an electronic control technology, the winch is widely used in various fields such as mines, and the requirements of the winch on power, energy conservation and safety are higher and higher.
The winch lifting equipment under the mine uses the start-stop button of the set operating room to manually and directly control the winch to work, goods under the mine are transported, safety accidents often occur in the transportation engineering, the progress of the mine engineering is greatly influenced, the construction period is very influenced once accidents happen, a plurality of operators are needed to complete monitoring and regulation of the engineering during operation, time and labor are wasted, the cost is high, the safety factor is low, and the safety and the automation degree of the mine lifting equipment device are improved urgently.
Disclosure of Invention
The invention aims to solve the technical problem of providing an electric control practical training device for vertical shaft lifting equipment, which can greatly improve the automation degree of the lifting equipment, reduce the maintenance cost, save human resources, increase the safety factor of use and ensure that the engineering can be smoothly completed on time.
In order to achieve the purpose, the invention adopts the technical scheme that: comprises a derrick, a wellhead, a shaft bottom, a winch room and a control cabinet; the derrick is arranged on a wellhead, the derrick is provided with a head sheave platform, an overwinding switch and a parking switch, and the signal output end of the overwinding switch is connected with the signal input end of the head sheave platform; the well head is communicated with the well bottom through a shaft; a lifting container is arranged in the shaft, and a depth sensor is arranged on the lifting container; the winch house is arranged at a position corresponding to the derrick, a lifting winch and an operating platform are arranged in the winch house, a start-stop button is arranged on the operating platform, and the lifting winch is connected with the lifting winch through a head sheave platform of the derrick by arranging a steel wire rope; the control cabinet is internally provided with a depth indicator and a lifting system, the signal input end of the depth indicator is respectively connected with the output ends of the depth sensor and the overwinding switch, the signal output end of the lifting system is connected with the signal input end of the lifting winch, and the signal output end of the start-stop button of the operating platform is connected with the signal input end of the lifting system.
The technical scheme provides an automatically controlled real device of instructing of vertical shaft lifting means, lifting system comprises main control computer programmable logic controller, control machine programmable logic controller, converter, power, first axle encoder, second axle encoder and reduction gear, main control computer programmable logic controller signal output part is connected with the signal input part of converter, the output of converter is equipped with the motor and connects, the output of motor is connected with the reduction gear, the output of reduction gear with promote the container and be connected, the motor is connected with main control computer programmable logic controller's signal input part through first axle encoder in addition, the reduction gear is connected with control machine programmable logic controller's signal input part through the second axle encoder in addition, the signal output part of promotion winch is connected with main control computer programmable logic controller's signal input part, the degree of depth indicator, the speed reducer is connected with the signal input part of the main control machine programmable logic controller through the second, The signal output ends of the start-stop button and the stop button are connected with the signal input end of the monitoring machine programmable logic controller, and the input ends of the monitoring machine programmable logic controller and the frequency converter are respectively provided with a power supply for connection.
According to the technical scheme, the electric control practical training device of the vertical shaft lifting equipment is characterized in that the head sheave platform on the derrick comprises movable idler wheels and a sliding groove, a shaft of each movable idler wheel is movably connected with the sliding groove, and the sliding groove is transversely fixed on the head sheave platform.
According to the electric control practical training device for the vertical shaft hoisting equipment, a roller arranged on the hoisting winch is connected with one end of a steel wire rope, and the other end of the steel wire rope bypasses a head sheave platform of a derrick and is fixedly connected with the hoisting container.
This technical scheme provides a real device of instructing of automatically controlled of vertical hoisting equipment, be equipped with ladder room, pipe room, steel cage, heavy car line and empty wagon line in addition in the pit shaft, be equipped with compressed air pipe, cable and drain pipe between the pipe, the cage setting is in the steel cage, and heavy car line and empty wagon line set up the both sides at the cage respectively.
This technical scheme provides a real device of instructing of automatically controlled of vertical hoisting equipment, the well head with the shaft bottom all is provided with signal lamp, emergency exit and car stop, and the signal lamp of well head and shaft bottom sets up the side at the car stop of well head and shaft bottom respectively, and the emergency exit setting of well head is in the position that well head and pit shaft are connected, and the emergency exit setting of shaft bottom is in the position that shaft bottom and pit shaft are connected, and the car stop of well head and shaft bottom sets up respectively in the position that corresponds with well head and shaft bottom emergency exit.
According to the technical scheme, the safety door and the signal input end of the car stopper are respectively connected with the signal output end of the depth indicator in the control cabinet.
This technical scheme provides a real device of instructing of vertical hoisting equipment automatically controlled, be provided with touch-control display screen, start and stop signal indicator, alarm signal indicator and demonstration switch on the switch board, touch-control display screen is connected to the signal output part of degree of depth indicator, and alarm signal indicator is connected to the signal output part of touch-control display screen, starts to stop button signal output part and connects the hoist system.
According to the electric control practical training device for the vertical shaft lifting equipment, the main control machine programmable logic controller is an ohm dragon CP1H-X standard type programmable logic controller; the monitoring machine programmable logic controller is an ohm dragon CP1H-Y high-speed positioning type programmable logic controller.
According to the technical scheme, the electric control practical training device of the vertical shaft hoisting equipment is characterized in that the frequency converter is an ohm dragon frequency converter, and a signal input end of the ohm dragon frequency converter is connected with a signal output end of a control unit of the main control machine programmable logic controller.
By adopting the technical scheme, the automation control is carried out through the programmable logic controller, the automation degree of the lifting equipment can be greatly improved, and the shaft encoder in the lifting system converts the analog quantity of the displacement of the rotating shaft of the motor into the digital quantity to be output to the programmable logic controller, so that the whole lifting project is monitored in real time, the maintenance cost can be reduced, the manpower resource is saved, the safety factor of use is increased, and the project can be smoothly completed on time.
The invention will be explained in more detail below with reference to the drawings and examples.
Drawings
The contents of the description and the references in the drawings are briefly described as follows:
FIG. 1 is a schematic view of an apparatus of the present invention;
FIG. 2 is a schematic flow diagram of a lift system according to the present invention;
labeled as: 1. a derrick; 2. a wellhead; 3. a wellbore; 4. a well bottom; 5. a winch house; 6. a control cabinet; 7. a head sheave platform; 8. a parking switch; 9. an overwinding switch; 10. a wire rope; 11. a signal lamp; 12. a depth sensor; 13. a steel cage guide; 14. a cage; 15. a heavy vehicle line; 16. an empty lane; 17. lifting the container; 18. a car stopper; 19. hoisting a winch; 20. an operation table; 21. a start-stop button; 22. a start-stop signal indicator lamp; 23. an alarm signal indicator light; 24. a demonstration switch; 25. a depth indicator; 26. a touch display screen; 27. a ladder compartment; 28. and (4) a safety door.
Detailed Description
The following description of the embodiments of the present invention, with reference to the accompanying drawings, will be made in further detail for the purpose of providing a more complete, accurate and thorough understanding of the inventive concepts and technical solutions of the present invention, including the shapes of the components, the structures, the mutual positions and connection relationships of the components, the functions and operating principles of the components, the manufacturing processes, the operation and use methods, and the like.
The electric control practical training device of the vertical shaft hoisting equipment shown in the figure 1 comprises a derrick 1, a wellhead 2, a shaft 3, a shaft bottom 4, a winch room 5 and a control cabinet 6; the derrick 1 is arranged on the wellhead 2, the head sheave platform 7, the overwinding switch 9 and the parking switch 8 are arranged on the derrick 1, and the signal output end of the overwinding switch 9 is connected with the signal input end of the head sheave platform 7; the well head 2 is communicated with the well bottom 4 through a shaft 3; a lifting container 17 is arranged in the shaft 3, and a depth sensor 12 is arranged on the lifting container 17; the winch house 5 is arranged at a position corresponding to the derrick 1, a lifting winch 19 and an operating platform 20 are arranged in the winch house 5, a start-stop button 21 is arranged on the operating platform 20, and the lifting winch 19 is connected with the lifting winch 19 through a head sheave platform 7 of the derrick 1 by arranging a steel wire rope 10; the control cabinet 6 is provided with a depth indicator 25 and a lifting system, the signal input end of the depth indicator 25 is respectively connected with the output ends of the depth sensor 12 and the overwinding switch 9, the signal output end of the lifting system is connected with the signal input end of the lifting winch 19, and the signal output end of the start-stop button 21 of the operating platform 20 is connected with the signal input end of the lifting system.
The lifting system shown in fig. 2 is composed of a main control machine programmable logic controller, a monitoring machine programmable logic controller, a frequency converter, a power supply, a first shaft encoder, a second shaft encoder and a speed reducer, wherein a signal output end of the main control machine programmable logic controller is connected with a signal input end of the frequency converter, an output end of the frequency converter is provided with a motor for connection, an output end of the motor is connected with the speed reducer, an output end of the speed reducer is connected with a lifting container 17, the motor is connected with a signal input end of the main control machine programmable logic controller through the first shaft encoder, the speed reducer is connected with a signal input end of the monitoring machine programmable logic controller through the second shaft encoder, a signal output end of a lifting winch 19 is connected with a signal input end of the main control machine programmable logic controller, signal output ends of a depth indicator 25, a start-stop button 21 and a stop button are connected with a signal input end, the input ends of the programmable logic controller of the monitoring machine and the frequency converter are respectively provided with power supply connection.
The drum arranged on the hoisting winch 19 is connected with one end of a steel wire rope 10, and the other end of the steel wire rope 10 bypasses the head sheave platform 7 of the derrick 1 to be fixedly connected with a hoisting container 17.
The shaft 3 is additionally provided with a ladder room 27, a pipe room, a steel cage 13, a cage 14, a heavy vehicle line 15 and an empty vehicle line 16, the pipe room is provided with a compressed air pipe, a cable and a drain pipe, the cage 14 is arranged in the steel cage 13, and the heavy vehicle line 15 and the empty vehicle line 16 are respectively arranged at two sides of the cage 14.
The well head 2 and the well bottom 4 are respectively provided with a signal lamp 11, a safety door 28 and a car stopper 18, the signal lamps 11 of the well head 2 and the well bottom 4 are respectively arranged at the side ends of the car stoppers 18 of the well head 2 and the well bottom 4, the safety door 28 of the well head 2 is arranged at the position where the well head 2 is connected with the shaft 3, the safety door 28 of the well bottom 4 is arranged at the position where the well bottom 4 is connected with the shaft 3, and the car stoppers 18 of the well head 2 and the well bottom 4 are respectively arranged at the positions corresponding to the safety doors 28 of the well head 2 and.
The signal inputs of the safety door 28 and the car stop 18 are each connected to a signal output of a depth indicator 25 in the control cabinet 6.
Be provided with touch-control display screen 26, start and stop signal indicator 22, alarm signal indicator 23 and demonstration switch 24 on the switch board 6, touch-control display screen 26 is connected to the signal output part of degree of depth indicator 25, and alarm signal indicator 23 is connected to the signal output part of touch-control display screen 26, starts and stops button 21 signal output part and connects lift system.
The main control machine programmable logic controller is an ohm dragon CP1H-X standard type programmable logic controller; the monitoring machine programmable logic controller is an ohm dragon CP1H-Y high-speed positioning type programmable logic controller.
The frequency converter is an ohm dragon frequency converter, and the signal input end of the ohm dragon frequency converter is connected with the signal output end of the control unit of the main control machine programmable logic controller.
When the lifting container 17 is used, the start-stop button 21 of the control room is started, signals are transmitted to the lifting system, after the lifting system is started, the main control machine programmable logic controller and the monitoring machine programmable logic controller which are used as control cores realize automatic control of the lifting winch 19 through the frequency converter, the power of the motor is regulated and controlled according to conditions, the lifting winch 19 is provided with the steel wire rope 10 which is connected with the lifting container 17 through the movable roller of the head sheave platform 7, the lifting container 17 is controlled to move away from the heavy vehicle line 15 or the empty vehicle line 16 according to the quality of the lifting container 17, the safety door 28 is opened and closed according to the depth indicator 25, when the lifting container 17 moves from the well bottom 4 to the well top 2, the car stopper 18 does not work, the safety door 28 is opened, and the lifting winch 19 lifts the lifting container 17. Once an accident occurs, if the lifting container 17 falls, the shaft encoder of the lifting system can acquire the information according to the acceleration and convert the information into digital information to be transmitted to the main control machine programmable logic controller, at the moment, the vehicle is directly stopped to completely work, and the safety door 28 is closed to prevent the danger of falling of heavy objects. The practical training device can also demonstrate the protection functions of a signal system, a locking relation, overwinding resetting, low-speed lifting, a safety loop, emergency stop and the like. Because the device is provided with a locking relation and can be started only after the locking condition is met, the mechanism with the locking relation is firstly used for resetting before demonstration, and generally, after normal operation, all the mechanisms are in the resetting position, and normal demonstration can be realized at the moment. The driving signal is formed by two modes: the signal lamp 11 of the well head 2 sends signals to the well bottom 4, and the signal lamp 11 of the well bottom 4 sends signals to the winch house 5; the signal light 11 of the well bottom 4 signals the well head 2, and the signal light 11 of the well head 2 signals the winch house 5. The signal lamp 11 of the well bottom 4 does not send a signal, and the well head 2 does not send a signal to the winch house 5; the wellhead 2 does not signal and the bottom 4 does not signal the winch house 5.
By adopting the technical scheme, the automation control is carried out through the programmable logic controller, the automation degree of the lifting equipment can be greatly improved, and the shaft encoder in the lifting system converts the analog quantity of the displacement of the rotating shaft of the motor into the digital quantity to be output to the programmable logic controller, so that the whole lifting project is monitored in real time, the maintenance cost can be reduced, the manpower resource is saved, the safety factor of use is increased, and the project can be smoothly completed on time.
The invention has been described above with reference to the accompanying drawings, it is obvious that the invention is not limited to the specific implementation in the above-described manner, and it is within the scope of the invention to apply the inventive concept and solution to other applications without substantial modification.
Claims (10)
1. The utility model provides an automatically controlled real device of instructing of vertical hoisting equipment which characterized in that: comprises a derrick, a wellhead, a shaft bottom, a winch room and a control cabinet; the derrick is arranged on a wellhead, the derrick is provided with a head sheave platform, an overwinding switch and a parking switch, and the signal output end of the overwinding switch is connected with the signal input end of the head sheave platform; the well head is communicated with the well bottom through a shaft; a lifting container is arranged in the shaft, and a depth sensor is arranged on the lifting container; the winch house is arranged at a position corresponding to the derrick, a lifting winch and an operating platform are arranged in the winch house, a start-stop button is arranged on the operating platform, and the lifting winch is connected with the lifting winch through a head sheave platform of the derrick by arranging a steel wire rope; the control cabinet is internally provided with a depth indicator and a lifting system, the signal input end of the depth indicator is respectively connected with the output ends of the depth sensor and the overwinding switch, the signal output end of the lifting system is connected with the signal input end of the lifting winch, and the signal output end of the start-stop button of the operating platform is connected with the signal input end of the lifting system.
2. An electric control practical training device for vertical shaft lifting equipment according to claim 1, which is characterized in that: the lifting system consists of a main control machine programmable logic controller, a monitoring machine programmable logic controller, a frequency converter, a power supply, a first shaft encoder, a second shaft encoder and a speed reducer, wherein the signal output end of the main control machine programmable logic controller is connected with the signal input end of the frequency converter, the output end of the frequency converter is provided with a motor for connection, the output end of the motor is connected with the speed reducer, the output end of the speed reducer is connected with the lifting container, the motor is connected with the signal input end of the main control machine programmable logic controller through the first shaft encoder, the speed reducer is connected with the signal input end of the monitoring machine programmable logic controller through the second shaft encoder, the signal output end of the lifting winch is connected with the signal input end of the main control machine programmable logic controller, and the signal output ends of the depth indicator, the start-stop button and the stop button are connected with the signal input end of the monitoring machine, the input ends of the programmable logic controller of the monitoring machine and the frequency converter are respectively provided with power supply connection.
3. An electric control practical training device for vertical shaft lifting equipment according to claim 1, which is characterized in that: the head sheave platform on the derrick comprises movable idler wheels and a sliding groove, wherein a shaft of each movable idler wheel is movably connected with the sliding groove, and the sliding groove is transversely fixed on the head sheave platform.
4. An electric control practical training device for vertical shaft lifting equipment according to claim 1, which is characterized in that: and a roller arranged on the hoisting winch is connected with one end of a steel wire rope, and the other end of the steel wire rope bypasses a head sheave platform of the derrick to be fixedly connected with the hoisting container.
5. An electric control practical training device for vertical shaft lifting equipment according to claim 1, which is characterized in that: the shaft is additionally provided with a ladder room, a pipe room, a steel cage, a heavy vehicle line and an empty vehicle line, a compressed air pipe, a cable and a drain pipe are arranged between the pipes, the cage is arranged in the steel cage, and the heavy vehicle line and the empty vehicle line are respectively arranged at two sides of the cage.
6. An electric control practical training device for vertical shaft lifting equipment according to claim 1, which is characterized in that: the well head with the shaft bottom all is provided with signal lamp, emergency exit and car stopper, and the signal lamp in well head and shaft bottom sets up the side at the car stopper in well head and shaft bottom respectively, and the emergency exit setting of well head is in the position that well head and pit shaft are connected, and the emergency exit setting in the shaft bottom is in the position that shaft bottom and pit shaft are connected, and the car stopper in well head and shaft bottom sets up respectively in the position that corresponds with well head and shaft bottom emergency exit.
7. An electric control practical training device for vertical shaft lifting equipment according to claim 6, which is characterized in that: and the signal input ends of the safety door and the car stopper are respectively connected with the signal output end of the depth indicator in the control cabinet.
8. An electric control practical training device for vertical shaft lifting equipment according to claim 1, which is characterized in that: the control cabinet is provided with a touch display screen, a start-stop signal indicator lamp, an alarm signal indicator lamp and a demonstration switch, the signal output end of the depth indicator is connected with the touch display screen, the signal output end of the touch display screen is connected with the alarm signal indicator lamp, and the start-stop button signal output end is connected with the lifting system.
9. An electric control practical training device for vertical shaft lifting equipment according to claim 2, characterized in that: the main control machine programmable logic controller is an ohm dragon CP1H-X standard type programmable logic controller; the monitoring machine programmable logic controller is an ohm dragon CP1H-Y high-speed positioning type programmable logic controller.
10. An electric control practical training device for vertical shaft lifting equipment according to claim 3, characterized in that: the frequency converter is an ohm dragon frequency converter, and the signal input end of the ohm dragon frequency converter is connected with the signal output end of the control unit of the main control machine programmable logic controller.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010862045.5A CN112162521A (en) | 2020-08-25 | 2020-08-25 | Automatically controlled real device of instructing of vertical hoisting equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010862045.5A CN112162521A (en) | 2020-08-25 | 2020-08-25 | Automatically controlled real device of instructing of vertical hoisting equipment |
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| CN112162521A true CN112162521A (en) | 2021-01-01 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010862045.5A Pending CN112162521A (en) | 2020-08-25 | 2020-08-25 | Automatically controlled real device of instructing of vertical hoisting equipment |
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| CN (1) | CN112162521A (en) |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6029951A (en) * | 1998-07-24 | 2000-02-29 | Varco International, Inc. | Control system for drawworks operations |
| CN201236084Y (en) * | 2008-01-08 | 2009-05-13 | 白士良 | Sensor and digit display electronic speed limiter security device of lift elevator |
| CN202584543U (en) * | 2012-03-24 | 2012-12-05 | 安徽理工大学 | Simulating training device of multi-rope friction mine hoist |
| CN104952348A (en) * | 2015-04-20 | 2015-09-30 | 淮北朔里矿业有限责任公司 | Coal mine hoist simulation training device |
| US20190048688A1 (en) * | 2017-08-14 | 2019-02-14 | Barry J. Nield | Drill rig and method for operating a drill rig |
| CN110032136A (en) * | 2019-04-28 | 2019-07-19 | 淮北矿业股份有限公司 | It is a kind of to confirm system with hole top signal |
| CN110482362A (en) * | 2019-09-21 | 2019-11-22 | 中科鼎盛电梯科技江苏有限公司 | A kind of no foundation ditch type elevator safety protective mechanisms |
-
2020
- 2020-08-25 CN CN202010862045.5A patent/CN112162521A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6029951A (en) * | 1998-07-24 | 2000-02-29 | Varco International, Inc. | Control system for drawworks operations |
| CN201236084Y (en) * | 2008-01-08 | 2009-05-13 | 白士良 | Sensor and digit display electronic speed limiter security device of lift elevator |
| CN202584543U (en) * | 2012-03-24 | 2012-12-05 | 安徽理工大学 | Simulating training device of multi-rope friction mine hoist |
| CN104952348A (en) * | 2015-04-20 | 2015-09-30 | 淮北朔里矿业有限责任公司 | Coal mine hoist simulation training device |
| US20190048688A1 (en) * | 2017-08-14 | 2019-02-14 | Barry J. Nield | Drill rig and method for operating a drill rig |
| CN110032136A (en) * | 2019-04-28 | 2019-07-19 | 淮北矿业股份有限公司 | It is a kind of to confirm system with hole top signal |
| CN110482362A (en) * | 2019-09-21 | 2019-11-22 | 中科鼎盛电梯科技江苏有限公司 | A kind of no foundation ditch type elevator safety protective mechanisms |
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Application publication date: 20210101 |