CN104444919B - Mine hoist constant deceleration brake electrichydraulic control equipment that can be anti-skidding - Google Patents
Mine hoist constant deceleration brake electrichydraulic control equipment that can be anti-skidding Download PDFInfo
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- CN104444919B CN104444919B CN201410748204.3A CN201410748204A CN104444919B CN 104444919 B CN104444919 B CN 104444919B CN 201410748204 A CN201410748204 A CN 201410748204A CN 104444919 B CN104444919 B CN 104444919B
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66D—CAPSTANS; WINCHES; TACKLES, e.g. PULLEY BLOCKS; HOISTS
- B66D5/00—Braking or detent devices characterised by application to lifting or hoisting gear, e.g. for controlling the lowering of loads
- B66D5/02—Crane, lift hoist, or winch brakes operating on drums, barrels, or ropes
- B66D5/24—Operating devices
- B66D5/26—Operating devices pneumatic or hydraulic
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66D—CAPSTANS; WINCHES; TACKLES, e.g. PULLEY BLOCKS; HOISTS
- B66D5/00—Braking or detent devices characterised by application to lifting or hoisting gear, e.g. for controlling the lowering of loads
- B66D5/02—Crane, lift hoist, or winch brakes operating on drums, barrels, or ropes
- B66D5/24—Operating devices
- B66D5/26—Operating devices pneumatic or hydraulic
- B66D5/28—Operating devices pneumatic or hydraulic specially adapted for winding gear, e.g. in mining hoists
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B21/00—Common features of fluid actuator systems; Fluid-pressure actuator systems or details thereof, not covered by any other group of this subclass
- F15B21/04—Special measures taken in connection with the properties of the fluid
- F15B21/041—Removal or measurement of solid or liquid contamination, e.g. filtering
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B21/00—Common features of fluid actuator systems; Fluid-pressure actuator systems or details thereof, not covered by any other group of this subclass
- F15B21/08—Servomotor systems incorporating electrically operated control means
- F15B21/087—Control strategy, e.g. with block diagram
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- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Analytical Chemistry (AREA)
- Chemical & Material Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Environmental & Geological Engineering (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geology (AREA)
- Fluid-Pressure Circuits (AREA)
- Braking Arrangements (AREA)
Abstract
The invention belongs to brake for elevator control technology, propose a kind of mine hoist constant deceleration brake electrichydraulic control equipment that can be anti-skidding.Propose electrichydraulic control equipment include three-phase uninterruption power source UPS(3), linear hydraulic station (4) and two close cycles adjusting means (2)；Linear hydraulic station (4) includes two electro-hydraulic pressure regulator devices (4.1), security solenoid valve (4.10), hydraulic operated valve (4.7) and oil pump (4.3)；The electric signal input end of two electro-hydraulic pressure regulator devices (4.1) is connected by the normally-closed contact of relay contactor, normally opened contact with the outfan of two close cycles adjusting means and switches respectively；The oil circuit outfan of electro-hydraulic pressure regulator device (4.1) connects the oil circuit of disc-brake (7) by hydraulic operated valve (4.7), security solenoid valve (4.10).Present invention achieves the constant deceleration brake of mine hoist, and during safety arrestment, avoid slip and the wriggling of steel wire rope.
Description
Technical field
The invention belongs to mine hoist Brake Control, be specifically related to a kind of mine hoist constant deceleration brake electrichydraulic control equipment that can be anti-skidding.
Background technology
Mine hoist braking includes service braking and safety arrestment；Described safety arrestment is mine hoist or mine winder, and the braking stopped in emergency during deadly condition occurs in running.At present, in prior art, the mode of safety arrestment has one-level braking, two stage braking and constant deceleration brake；Wherein one-level braking has been rarely employed；Two stage braking is a kind of traditional safety arrestment mode, belongs to constant moment of force braking, uses two-stage brake hydraulic station as the fueller of disc-brake；Two stage braking process be exactly by certain elevator needed for whole braking moments be divided into two grades to be braked；But two stage braking is primarily present following shortcoming: 1) safety arrestment time, brake force divides two-stage to apply up, and braking procedure includes that to plant equipment boom hoist cable and derrick or the impact of headframe facility are big, there is potential safety hazard；2) heavy lift and decentralization process, the Tension Difference difference of boom hoist cable is notable, and for same the two-stage brake hydraulic station used, heavy lift to be taken into account and weight transfer the two significant operating modes of species diversity, debugging difficulty, and braking effect is the best；It is equipped with individually special permanent deceleration Hydraulic Station as disk brake fueller, known permanent deceleration Hydraulic Station is equivalent to add on the basis of two-stage brake hydraulic station for the oil sources and electro-hydraulic pressure regulation link controlling to provide that slow down for perseverance, although overcoming some problems that two-stage brake hydraulic station exists, there is also some shortcomings, as: 1) service braking and the oil sources used by constant deceleration brake process and electro-hydraulic pressure regulator device be separate and repeat to arrange, permanent deceleration Hydraulic Station structure complexity, debugging difficulty, though braking effect has an improvement, but poor repeatability；2) safety arrestment is a random event, regularly deceleration link permanent to realization or unit serviceability checking cannot be carried out in daily production process, during until permanent deceleration needs to come into operation, permanent deceleration link or unit may be malfunctioning, equally exist other potential safety hazard；3) during safety arrestment, existing and decelerate to two stage braking and the switching of one-level braking from perseverance, there is potential safety hazard in handoff procedure；4) no matter two-stage brake hydraulic station is used, still special permanent deceleration Hydraulic Station is used, two grades or one-level braking are all implemented in put in place well head (end) interval of stop of distance, impact still can not reduce and avoid, the parking even if elevator normally puts in place, the most often has big vibrations and the sound in the moment stopped；5) safety arrestment and docking process there may be serious steel cable sliding and crawl.
If steel cable sliding and wriggle seriously equally exist potential safety hazard, affect simultaneously hoisting container put in place parking accuracy, affect raising efficiency and safety.
Summary of the invention
For solving above-mentioned technical problem, the purpose of the present invention is to propose to a kind of mine hoist constant deceleration brake electrichydraulic control equipment that can be anti-skidding.
The present invention adopts the following technical scheme that for completing above-mentioned purpose
A kind of can be anti-skidding mine hoist constant deceleration brake electrichydraulic control equipment, described electrichydraulic control equipment includes three-phase uninterruption power source UPS, linear hydraulic station and two close cycles adjusting means；Described two close cycles adjusting means includes pressure closed loop and speed closed loop；The force value of the pressure transducer detection disk brake of described pressure closed loop as the pressure closed loop signal of two close cycles adjusting means input, the speed of service value of the velocity sensor detection mine hoist of described speed closed loop the speed closed loop signal as two close cycles adjusting means input；Described linear hydraulic station include electro-hydraulic pressure regulator device, security solenoid valve, hydraulic operated valve and with think electro-hydraulic pressure regulator device provide pressure oil oil pump；Described electro-hydraulic pressure regulator device is as work or standby two, the switching operable and standby by controlling relay contactor；Described oil pump is corresponding two electro-hydraulic pressure regulator devices two；Two described oil pump motors are connected with three-phase uninterruption power source UPS by the normally-closed contact of relay contactor, normally opened contact respectively；The electric signal input end of two described electro-hydraulic pressure regulator devices is connected with the outfan of two close cycles adjusting means by the normally-closed contact of relay contactor, normally opened contact respectively, receives the speed closed loop signal of telecommunication from two close cycles adjusting means, the pressure closed loop signal of telecommunication；The oil circuit entrance of two described electro-hydraulic pressure regulator devices is connected with corresponding oil pump respectively；The oil circuit outlet of two described electro-hydraulic pressure regulator devices is connected with two input ports of hydraulic operated valve respectively, and the speed closed loop signal of telecommunication received or the pressure closed loop signal of telecommunication are converted into pressure signal by linear scale and control the aperture of built-in proportioning valve by electro-hydraulic pressure regulator device；Hydraulic operated valve automatically selects work or the emergency bearing oil pump oil sources as linear hydraulic station fuel feeding according to oil pressure condition；The outfan of hydraulic operated valve is connected with the input of security solenoid valve；At least be arranged in parallel two of described security solenoid valve；The outfan of described security solenoid valve connects the oil circuit of disc-brake, the oil sources of relevant pressure is provided for disk brake by security solenoid valve, allow disk brake apply corresponding brake force by linear scale to mine hoist, perform safety arrestment, service braking；During perseverance deceleration safety arrestment, electro-hydraulic pressure regulator device receives the speed closed loop signal of telecommunication of two close cycles adjusting means output, the pressure closed loop signal of telecommunication, and the aperture of the pressure signal built-in proportioning valve of control it is converted into by linear scale, make elevator during secondary safety arrestment, speed is successively decreased by given deceleration set in advance, do not affected by direction of improvement or the size of load and safety arrestment spot speed size, when the overall process of secondary safety arrestment all uses permanent deceleration to control, and when the mean deceleration angle value of time safety arrestment process keeps constant, reduce safety arrestment process and plant equipment is included the impact of boom hoist cable, eliminate safe hidden trouble；Guarantee during Brake stop steadily safety, vibrations when eliminating or reduce parking and sound.
Described two close cycles adjusting means includes speed ring, pressure rings and power amplifier；Described pressure rings includes service brake pressure and gives device, pressure rings comparator, pressure regulator, the interval amplitude limiter of pressure regulation, pressure rate of descent limiter and pressure transducer；Described pressure transducer is for monitoring in real time the actual pressure of disc-brake；The outfan of described pressure transducer is connected to the input of pressure rings comparator, and the actual pressure at linear hydraulic station is sent into pressure rings comparator；Described service brake pressure is given device and is connected to the input of pressure rings comparator by the normally opened contact of safety relay AC, and the setting pressure during service braking is sent into pressure rings comparator；In described pressure rings comparator, the actual pressure to the setting pressure during service braking with linear hydraulic station is compared；The outfan of described pressure rings comparator is connected to the input of pressure regulator；The outfan of described pressure regulator is connected with electro-hydraulic pressure regulator device by power amplifier, the weak electric signal exported pressure closed loop by power amplifier carries out power amplification, to drive electro-hydraulic pressure regulator device in linear hydraulic station to be adjusted linear hydraulic station pressure；The outfan of the interval amplitude limiter of described pressure regulation is connected to the amplitude limit input of pressure regulator by the normally-closed contact of safety relay AC, in during safety arrestment process and enforcement perseverance slow down regulation, the output signal to pressure regulator carries out upper and lower limit amplitude limit control, promote braking moment more uniform, brake more steady；During service braking, the normally-closed contact of safety relay AC disconnects, and the pressure amplitude limit of the interval amplitude limiter of pressure regulation is cancelled.
Described speed ring includes safety arrestment speed setter, speed ring comparator, speed regulator and velocity sensor；The input of described safety arrestment speed setter is connected with velocity sensor by the normally opened contact of safety relay AC；Described velocity sensor is arranged on mine hoist, in order to monitor the speed of mine hoist in real time；Described velocity sensor, the outfan of described safety arrestment speed setter all inputs with speed ring comparator are connected, and give speed ring comparator by the safety arrestment given speed of safety arrestment speed setter and the actual speed of mine hoist；The described given speed of safety arrestment speed setter is using the spot speed of mine hoist safety braking as initial value the numerical value of formation of successively decreasing by the deceleration set during safety arrestment；Comparing given speed with actual speed in described speed ring comparator, the outfan of speed ring comparator is connected to the input of speed regulator；The outfan of speed regulator is connected to the input of pressure rings comparator, and the setting pressure during safety arrestment is sent into the input of pressure rings comparator；The actual pressure that setting pressure during safety arrestment and pressure transducer are sent into pressure rings comparator by pressure rings comparator compares；During perseverance deceleration safety arrestment, linear hydraulic station carries out pressure regulation according to the velocity deviation situation of speed closed loop in the restriction interval of the interval amplitude limiter of pressure regulation, elevator speed during safety arrestment is successively decreased by the deceleration set, not affected by direction of improvement or the size of load and safety arrestment spot speed size, safety arrestment process average deceleration value keeps constant.
The interval different constant deceleration brake implementing different deceleration value in direction that deceleration set by described safety arrestment speed setter according to heavy lift or is transferred and hoisting container place；Heavy lift when there is safety arrestment, lifting deceleration as2 that liftings deceleration as1 interval in well of weight is interval in shaft bottom or well head less than weight, weight lifting deceleration as2 interval in shaft bottom or well head is less than weight deceleration as3 at stop；When weight is transferred and safety arrestment occurs, weight in well interval transfer deceleration bs1 interval in shaft bottom or well head less than weight transfer deceleration bs2；Liftings deceleration as1 interval in well of weight more than weight in well interval transfer deceleration bs1；What weight lifting deceleration as2 in shaft bottom or well head interval was interval in shaft bottom or well head more than weight transfers deceleration bs2；According to different situations, set different deceleration, make mine hoist include in different situations normally to put in place to stop and select to implement the constant deceleration brake of different deceleration value, reach to avoid or reduce the purpose of steel cable sliding and wriggling so that safety arrestment and stopping brake are more steady.
The oil circuit input of described oil pump, outfan are respectively arranged with oil filter I, oil filter II；The outfan of described oil filter II connects the oil circuit entrance of electro-hydraulic pressure regulator device；The outside of described oil filter II is parallel with differential pressure transmitter device, in order to when oil filter II blocking reaches to a certain degree, to send signal, to remind and overhaul linear Hydraulic Station and clean oil circuit.
The outfan of described security solenoid valve manually stop valve is connected with pressure transducer.
The present invention proposes a kind of mine hoist constant deceleration brake electrichydraulic control equipment that can be anti-skidding, use technique scheme, need not be equipped with special permanent deceleration Hydraulic Station, can according to weight promote or transfer the interval residing for direction and container, mine hoist realizes the permanent deceleration safety arrestment of different deceleration value, the overall process making safety arrestment all uses permanent deceleration safety arrestment, and, during the permanent regulation of slowing down of safety arrestment process, oil pump still works and slows down to regulate for perseverance provides oil sources, service braking and permanent deceleration safety arrestment share electro-hydraulic pressure regulator device and carry out pressure regulation, achieve the constant deceleration brake of mine hoist, and during safety arrestment, avoid or reduce slip and the wriggling of steel wire rope, there is overall performance good, the feature that security reliability is high；The present invention does not has particular/special requirement to linear hydraulic station, linear hydraulic station used principle is simple, its oil circuit and device used are the cleanest and the tidiest, cost required for realizing permanent deceleration is lower, performance is more superior, constant deceleration brake and service braking share electro-hydraulic pressure regulator device, oil circuit and the task performance of hydraulic component and unfailing performance access regular checking, fault rate is lower, braking procedure and docking process are more steadily and safety, avoid or reduce slip and the wriggling of steel wire rope, have obvious social and economic benefits.
Accompanying drawing explanation
Fig. 1 is the theory diagram of the present invention.
Fig. 2 is the structural representation of two close cycles adjusting means in invention.
Fig. 3 is the signal of deceleration value under different situations.
In figure, 1, relay contactor, 2, two close cycles adjusting means, 2.1, safety relay AC, 2.2, safety arrestment speed setter, 2.3, speed ring comparator, 2.4, speed regulator, 2.5, pressure rings comparator, 2.6, service brake pressure give device, 2.7, pressure regulator, 2.8, the interval amplitude limiter of pressure regulation, 2.9, pressure rate of descent limiter, 2.10, power amplifier, 2.11, velocity sensor, 2.12, pressure transducer, 3, three-phase uninterruption power source UPS；4, linear hydraulic station, 4.1, electro-hydraulic pressure regulator device, 4.2, motor, 4.3, oil pump, 4.4. oil filter I, 4.5, oil filter II, 4.6, differential pressure transmitter device, 4.7, hydraulic operated valve, 4.8, hand stop valve, 4.9, Pressure gauge, 4.10. security solenoid valve, 5, disk brake, 6, mine hoist；D, safety arrestment generation point, T1, shutdown switch operating point, T2, stop, interval in H1, well, H2, shaft bottom or well head are interval.
Detailed description of the invention
In conjunction with the drawings and specific embodiments, the present invention is illustrated:
As it is shown in figure 1, a kind of can be anti-skidding mine hoist constant deceleration brake electrichydraulic control equipment, described electrichydraulic control equipment includes three-phase uninterruption power source UPS3, linear hydraulic station 4 and two close cycles adjusting means 2；Described two close cycles adjusting means 2 includes pressure closed loop and speed closed loop；The pressure transducer 2.12 of described pressure closed loop detects the force value pressure closed loop signal as two close cycles adjusting means input of disk brake, and the velocity sensor 2.11 of described speed closed loop detects the speed of service value of mine hoist and as the speed closed loop signal of two close cycles adjusting means input；Described linear hydraulic station 4 includes electro-hydraulic pressure regulator device 4.1, security solenoid valve 4.10, hydraulic operated valve 4.7 and with thinking that electro-hydraulic pressure regulator device 4.1 provides the oil pump 4.3 of pressure oil；Described electro-hydraulic pressure regulator device 4.1 is to be provided with work or standby two, the switching operable and standby by controlling relay contactor 1；Described oil pump 4.3 is two that corresponding two electro-hydraulic pressure regulator devices are arranged；The motor 4.2 of two described oil pumps 4.3 is connected with three-phase uninterruption power source UPS3 by the normally-closed contact of relay contactor 1, normally opened contact respectively, even if under the accident conditions that full ore deposit has a power failure, three-phase uninterruption power source UPS3 also can provide power supply for linear hydraulic station 4 and control loop thereof, it is achieved constant deceleration brake controls；The electric signal input end of two described electro-hydraulic pressure regulator devices 4.1 is connected with the outfan of two close cycles adjusting means by the normally-closed contact of relay contactor 1, normally opened contact respectively, receives the speed closed loop signal of telecommunication from two close cycles adjusting means 2, the pressure closed loop signal of telecommunication；The oil circuit entrance of two described electro-hydraulic pressure regulator devices 4.1 is connected with corresponding oil pump 4.3 respectively；The oil circuit outlet of two described electro-hydraulic pressure regulator devices 4.1 is connected with two input ports A, B of hydraulic operated valve 4.7 respectively, and the speed closed loop signal of telecommunication received or the pressure closed loop signal of telecommunication are converted into pressure signal by linear scale and control the aperture of built-in proportioning valve by electro-hydraulic pressure regulator device 4.1；Hydraulic operated valve 4.7 automatically selects work or the emergency bearing oil pump oil sources as linear hydraulic station fuel feeding according to oil pressure condition；The outfan of hydraulic operated valve 4.7 is connected with the input of security solenoid valve 4.10；At least be arranged in parallel two of described security solenoid valve 4.10；End of a period moment just power-off at constant deceleration brake so that the reliable thoroughly oil return of disk brake 5, it is ensured that the safety of braking；In this embodiment, described security solenoid valve 4.10 is two be arranged in parallel；The outfan of described security solenoid valve 4.10 connects the oil circuit of disc-brake 5, the oil sources of relevant pressure is provided for disk brake 5 by security solenoid valve 4.10, allow disk brake 5 apply corresponding brake force by linear scale to mine hoist 6, perform safety arrestment, service braking；During perseverance deceleration safety arrestment, electro-hydraulic pressure regulator device 4.1 receives the speed closed loop signal of telecommunication of two close cycles adjusting means 2 output, the pressure closed loop signal of telecommunication, and the aperture of the pressure signal built-in proportioning valve of control it is converted into by linear scale, make elevator during secondary safety arrestment, speed is successively decreased by given deceleration set in advance, do not affected by direction of improvement or the size of load and safety arrestment spot speed size, when the overall process of secondary safety arrestment all uses permanent deceleration to control, and when the mean deceleration angle value of time safety arrestment process keeps constant, reduce safety arrestment process and plant equipment is included the impact of boom hoist cable, eliminate safe hidden trouble；Guarantee during Brake stop steadily safety, vibrations when eliminating or reduce parking and sound.
As in figure 2 it is shown, described two close cycles adjusting means 2 includes speed ring, pressure rings and power amplifier 2.10；Described pressure rings includes service brake pressure and gives device 2.6, pressure rings comparator 2.5, pressure regulator 2.7, the interval amplitude limiter 2.8 of pressure regulation, pressure rate of descent limiter 2.9 and pressure transducer 2.12；Described pressure transducer 2.12 is for monitoring in real time the actual pressure of disc-brake 2.7；The outfan of described pressure transducer 2.12 is connected to the input of pressure rings comparator 2.5, and the actual pressure at linear hydraulic station 4 is sent into pressure rings comparator 2.5；Described service brake pressure is given device 2.6 and is connected to the input of pressure rings comparator 2.5 by the normally opened contact of safety relay AC2.1, and the setting pressure during service braking is sent into pressure rings comparator 2.5；In described pressure rings comparator 2.5, the actual pressure to the setting pressure during service braking with linear hydraulic station 4 is compared；The outfan of described pressure rings comparator 2.5 is connected to the input of pressure regulator 2.7；The outfan of described pressure regulator 2.7 is connected with electro-hydraulic pressure regulator device 4.1 by power amplifier 2.10, the weak electric signal exported pressure closed loop by power amplifier 2.10 carries out power amplification, to drive electro-hydraulic pressure regulator device 4.1 in linear hydraulic station to be adjusted linear hydraulic station pressure；The outfan of the interval amplitude limiter 2.8 of described pressure regulation is connected to the amplitude limit input of pressure regulator 2.7 by the normally-closed contact of safety relay AC2.1, in during safety arrestment process and enforcement perseverance slow down regulation, the output signal to pressure regulator carries out upper and lower limit amplitude limit control, promote braking moment more uniform, brake more steady；During service braking, the normally-closed contact of safety relay AC2.1 disconnects, and the pressure amplitude limit of the interval amplitude limiter 2.8 of pressure regulation is cancelled；
Described speed ring includes safety arrestment speed setter 2.2, speed ring comparator 2.3, speed regulator 2.4 and velocity sensor 2.11；The input of described safety arrestment speed setter 2.2 is connected with velocity sensor 2.11 by the normally opened contact of safety relay AC2.1；Described velocity sensor 2.11 is arranged on mine hoist, in order to monitor the speed of mine hoist in real time；Described velocity sensor 2.11, the outfan of described safety arrestment speed setter 2.2 all inputs with speed ring comparator 2.3 are connected, and give speed ring comparator 2.3 by the safety arrestment given speed of safety arrestment speed setter 2.2 and the actual speed of mine hoist 6；The described given speed of safety arrestment speed setter 2.2 is using the spot speed of mine hoist safety braking as initial value the numerical value of formation of successively decreasing by the deceleration set during safety arrestment；Comparing given speed with actual speed in described speed ring comparator 2.3, the outfan of speed ring comparator 2.3 is connected to the input of speed regulator 2.4；The outfan of speed regulator 2.4 is connected to the input of pressure rings comparator 2.5, and the setting pressure during safety arrestment is sent into the input of pressure rings comparator；The actual pressure that setting pressure during safety arrestment and pressure transducer 2.12 are sent into pressure rings comparator by pressure rings comparator 2.5 compares；During perseverance deceleration safety arrestment, linear hydraulic station carries out pressure regulation according to the velocity deviation situation of speed closed loop in the restriction interval of the interval amplitude limiter of pressure regulation, elevator speed during safety arrestment is successively decreased by the deceleration set, not affected by direction of improvement or the size of load and safety arrestment spot speed size, safety arrestment process average deceleration value keeps constant.
As it is shown on figure 3, described safety arrestment speed 2.2 gives direction and the different constant deceleration brake implementing different deceleration value in interval, hoisting container place that the deceleration set by device according to heavy lift or is transferred；Heavy lift when there is safety arrestment, lifting deceleration as2 that liftings deceleration as1 interval in well of weight is interval in shaft bottom or well head less than weight, weight lifting deceleration as2 interval in shaft bottom or well head is less than weight deceleration as3 at stop；When weight is transferred and safety arrestment occurs, weight in well interval transfer deceleration bs1 interval in shaft bottom or well head less than weight transfer deceleration bs2；Liftings deceleration as1 interval in well of weight more than weight in well interval transfer deceleration bs1；What weight lifting deceleration as2 in shaft bottom or well head interval was interval in shaft bottom or well head more than weight transfers deceleration bs2；According to different situations, set different deceleration, make mine hoist include in different situations normally to put in place to stop and select to implement the constant deceleration brake of different deceleration value, reach to avoid or reduce the purpose of steel cable sliding and wriggling so that safety arrestment and stopping brake are more steady.
The oil circuit input of described oil pump 4.3, outfan are respectively arranged with oil filter I4.4, oil filter II4.5；The outfan of described oil filter II4.5 connects the oil circuit entrance of electro-hydraulic pressure regulator device 4.1；The outside of described oil filter II4.5 is parallel with differential pressure transmitter device 4.6, in order to when oil filter II4.5 blocking reaches to a certain degree, to send signal, to remind and overhaul linear Hydraulic Station and clean oil circuit.
The outfan of described security solenoid valve 4.10 manually stop valve 4.8 is connected with pressure transducer 2.12.
Electro-hydraulic pressure regulator device 4.1 in described linear hydraulic station 4, in addition to the signal of telecommunication being converted into pressure signal by linear scale during service braking, also the work of character is maintained like during the permanent regulation of slowing down of safety arrestment, only just quit work when emergency, it is ensured that mine hoist 6 stably stop.
Motor 4.2 and oil pump 4.3 in described linear hydraulic station 4, in addition to keeping operating during service braking, also keep operating during the permanent regulation of slowing down of safety arrestment, and only during emergency, motor 4.2 and oil pump 4.3 thereof are the most out of service.
nullDuring service braking，Motor 4.2 starts operating under the power supply of three-phase uninterruption power source UPS3，The pressure oil in linear Hydraulic Station 4 drawn by oil pump 4.3，Respectively through oil filter I4.4 and the filtration of oil filter II4.5，Pressure oil arrives the oil circuit entrance of electro-hydraulic pressure regulator device 4.1，When the outfan i.e. signal of the telecommunication input terminal of electro-hydraulic pressure regulator device 4.1 of two close cycles adjusting means 2 is zero，The pressure oil of oil pump 4.2 output is in electro-hydraulic pressure regulator device 4.1 returns to the fuel tank at linear hydraulic station 4，Now Pressure gauge 4.9 show value is the residual voltage value of system oil pressure，Hydraulic operated valve 4.7 is according to two input port A、The pressure of B，Automatically port A or B having pressure is connected with its delivery outlet P，Play work or the effect of standby oil sources automatic switchover，Along with the outfan i.e. signal value of the telecommunication input terminal of electro-hydraulic pressure regulator device 4.1 of two close cycles adjusting means 2 is raised and lowered，The system oil pressure at linear hydraulic station 4 is followed and is raised and lowered，Security solenoid valve 4.10 electric in the case of，The oil circuit pressure of disk brake 5 changes the most therewith，Disk brake 5 carries out declutching or tight lock action i.e. service braking therewith，When security solenoid valve 4.10 power-off，The hydraulic oil of disk brake 5 is through the thorough oil return of security solenoid valve 4.10，All of brake force is applied on the brake disc of mine hoist 6 by disk brake 5，Mine hoist 6 stably stop.
nullDuring safety arrestment，Oil pump motor 4.2 continues powered by three-phase uninterruption power source UPS3 and drive oil pump 4.3 to provide oil sources for linear hydraulic station 4，Electro-hydraulic pressure regulator device 4.1 is adjusted controlling by the output resume of two close cycles adjusting means 2，Two close cycles adjusting means 2 monitors safety arrestment and occurs mine hoist 6 speed of service of moment as initial value，And reduce by given deceleration value，The actual speed that the given speed formed is detected with velocity sensor 2.11 compares，When actual speed is more than given speed，Closed loop regulation in two close cycles adjusting means 2，The output of two close cycles adjusting means 2 reduces，Under the effect of electro-hydraulic pressure regulator device 4.1，System oil pressure in linear hydraulic station 4 reduces，Disk brake 5 oil return pressure release the direction action toward tight lock，Strengthen braking moment，Make mine hoist 6 strengthen deceleration and be braked deceleration；Otherwise, when actual speed is less than given speed, the output of two close cycles adjusting means 2 raises, system oil pressure in linear hydraulic station 4 raises, the oil-filled supercharging of disk brake 5 the past direction action declutched, reduce braking moment, and the deceleration of mine hoist 6 decreases；Speed and the result of pressure closed loop regulation, during implementing permanent deceleration safety arrestment, when the average retardation rate of secondary braking maintains substantially constant, reach the purpose of permanent deceleration safety arrestment.
The foregoing is only the present invention and realize the preferred embodiment of mine hoist constant deceleration brake, protection scope of the present invention is not limited thereto, any belong to scope based on the equivalent transformation in technical solution of the present invention within.
Claims (5)
1. one kind can be anti-skidding mine hoist constant deceleration brake electrichydraulic control equipment, it is characterised in that: described electrichydraulic control equipment includes three-phase uninterruption power source UPS(3), linear hydraulic station (4) and two close cycles adjusting means (2)；Described two close cycles adjusting means (2) includes pressure closed loop and speed closed loop；The force value of pressure transducer (2.12) the detection disk brake of described pressure closed loop as the pressure closed loop signal of two close cycles adjusting means input, the speed of service value of velocity sensor (2.11) the detection mine hoist of described speed closed loop the speed closed loop signal as two close cycles adjusting means input；Described linear hydraulic station (4) include electro-hydraulic pressure regulator device (4.1), security solenoid valve (4.10), hydraulic operated valve (4.7) and with think electro-hydraulic pressure regulator device (4.1) provide pressure oil oil pump (4.3)；Described electro-hydraulic pressure regulator device (4.1) is as work or standby two, the switching operable and standby by controlling relay contactor (1)；Described oil pump (4.3) is two that corresponding two electro-hydraulic pressure regulator devices are arranged；The motor (4.2) of two described oil pumps (4.3) is respectively by the normally-closed contact of relay contactor (1), normally opened contact and three-phase uninterruption power source UPS(3) connect；The electric signal input end of two described electro-hydraulic pressure regulator devices (4.1) is connected with the outfan of two close cycles adjusting means by the normally-closed contact of relay contactor (1), normally opened contact respectively, receives the speed closed loop signal of telecommunication from two close cycles adjusting means (2), the pressure closed loop signal of telecommunication；The oil circuit entrance of two described electro-hydraulic pressure regulator devices (4.1) is connected with corresponding oil pump (4.3) respectively；The oil circuit outlet of two described electro-hydraulic pressure regulator devices (4.1) is connected with two input ports A, B of hydraulic operated valve (4.7) respectively, and the speed closed loop signal of telecommunication received or the pressure closed loop signal of telecommunication are converted into pressure signal by linear scale and control the aperture of built-in proportioning valve by electro-hydraulic pressure regulator device (4.1)；Hydraulic operated valve (4.7) automatically selects work or the emergency bearing oil pump oil sources as linear hydraulic station fuel feeding according to oil pressure condition；The outfan of hydraulic operated valve (4.7) is connected with the input of security solenoid valve (4.10)；At least be arranged in parallel two of described security solenoid valve (4.10)；The outfan of described security solenoid valve (4.10) connects the oil circuit of disc-brake (5), it is the oil sources that disk brake (5) provides relevant pressure by security solenoid valve (4.10), allow disk brake (5) apply corresponding brake force by linear scale to mine hoist (6), perform safety arrestment, service braking；During perseverance deceleration safety arrestment, electro-hydraulic pressure regulator device (4.1) receives the speed closed loop signal of telecommunication that two close cycles adjusting means (2) exports, the pressure closed loop signal of telecommunication, and the aperture of the pressure signal built-in proportioning valve of control it is converted into by linear scale, make elevator during secondary safety arrestment, speed is successively decreased by given deceleration set in advance, do not affected by direction of improvement or the size of load and safety arrestment spot speed size, when the overall process of secondary safety arrestment all uses permanent deceleration to control, and when the mean deceleration angle value of time safety arrestment process keeps constant, reduce safety arrestment process and plant equipment is included the impact of boom hoist cable, eliminate safe hidden trouble；Guarantee during Brake stop steadily safety, vibrations when eliminating or reduce parking and sound.
The most according to claim 1 a kind of can be anti-skidding mine hoist constant deceleration brake electrichydraulic control equipment, it is characterised in that: described two close cycles adjusting means (2) includes speed ring, pressure rings and power amplifier (2.10)；Described pressure rings includes service brake pressure and gives device (2.6), pressure rings comparator (2.5), pressure regulator (2.7), the interval amplitude limiter (2.8) of pressure regulation, pressure rate of descent limiter (2.9) and pressure transducer (2.12)；Described pressure transducer (2.12) is for monitoring in real time the actual pressure of disc-brake (5)；The outfan of described pressure transducer (2.12) is connected to the input of pressure rings comparator (2.5), and the actual pressure of linear hydraulic station (4) is sent into pressure rings comparator (2.5)；Described service brake pressure gives device (2.6) by safety relay AC(2.1) normally opened contact be connected to the input of pressure rings comparator (2.5), the setting pressure during service braking is sent into pressure rings comparator (2.5)；In described pressure rings comparator (2.5), the actual pressure to the setting pressure during service braking with linear hydraulic station (4) is compared；The outfan of described pressure rings comparator (2.5) is connected to the input of pressure regulator (2.7)；The outfan of described pressure regulator (2.7) is connected with electro-hydraulic pressure regulator device (4.1) by power amplifier (2.10), the weak electric signal exported pressure closed loop by power amplifier (2.10) carries out power amplification, to drive electro-hydraulic pressure regulator device (4.1) in linear hydraulic station to be adjusted linear hydraulic station pressure；The outfan of the interval amplitude limiter of described pressure regulation (2.8) is by safety relay AC(2.1) normally-closed contact be connected to the amplitude limit input of pressure regulator (2.7), in during safety arrestment process and enforcement perseverance slow down regulation, the output signal to pressure regulator carries out upper and lower limit amplitude limit control, promote braking moment more uniform, brake more steady；During service braking, safety relay AC(2.1) normally-closed contact disconnect, the pressure amplitude limit of the interval amplitude limiter (2.8) of pressure regulation is cancelled;
Described speed ring includes safety arrestment speed setter (2.2), speed ring comparator (2.3), speed regulator (2.4) and velocity sensor (2.11)；The input of described safety arrestment speed setter (2.2) pass through safety relay AC(2.1) normally opened contact be connected with velocity sensor (2.11)；Described velocity sensor (2.11) is arranged on mine hoist, in order to monitor the speed of mine hoist in real time；Described velocity sensor (2.11), the outfan of described safety arrestment speed setter (2.2) all inputs with speed ring comparator (2.3) are connected, and give speed ring comparator (2.3) by the safety arrestment given speed of safety arrestment speed setter (2.2) and the actual speed of mine hoist (6)；The described given speed of safety arrestment speed setter (2.2) is using the spot speed of mine hoist safety braking as initial value the numerical value of formation of successively decreasing by the deceleration set during safety arrestment；Comparing given speed with actual speed in described speed ring comparator (2.3), the outfan of speed ring comparator (2.3) is connected to the input of speed regulator (2.4)；The outfan of speed regulator (2.4) is connected to the input of pressure rings comparator (2.5), and the setting pressure during safety arrestment is sent into the input of pressure rings comparator；The actual pressure that setting pressure during safety arrestment and pressure transducer (2.12) are sent into pressure rings comparator by pressure rings comparator (2.5) compares；During perseverance deceleration safety arrestment, linear hydraulic station carries out pressure regulation according to the velocity deviation situation of speed closed loop in the restriction interval of the interval amplitude limiter of pressure regulation, elevator speed during safety arrestment is successively decreased by the deceleration set, not affected by direction of improvement or the size of load and safety arrestment spot speed size, safety arrestment process average deceleration value keeps constant.
The most according to claim 2 a kind of can be anti-skidding mine hoist constant deceleration brake electrichydraulic control equipment, it is characterised in that: the interval different constant deceleration brake implementing different deceleration value in direction that the deceleration set by described safety arrestment speed setter (2.2) according to heavy lift or is transferred and hoisting container place；Heavy lift when there is safety arrestment, lifting deceleration as2 that liftings deceleration as1 interval in well of weight is interval in shaft bottom or well head less than weight, weight lifting deceleration as2 interval in shaft bottom or well head is less than weight deceleration as3 at stop；When weight is transferred and safety arrestment occurs, weight in well interval transfer deceleration bs1 interval in shaft bottom or well head less than weight transfer deceleration bs2；Liftings deceleration as1 interval in well of weight more than weight in well interval transfer deceleration bs1；What weight lifting deceleration as2 in shaft bottom or well head interval was interval in shaft bottom or well head more than weight transfers deceleration bs2；According to different situations, set different deceleration, make mine hoist include in different situations normally to put in place to stop and select to implement the constant deceleration brake of different deceleration value, reach to avoid or reduce the purpose of steel cable sliding and wriggling so that safety arrestment and stopping brake are more steady.
The most according to claim 1 a kind of can be anti-skidding mine hoist constant deceleration brake electrichydraulic control equipment, it is characterised in that: the oil circuit input of described oil pump (4.3), outfan are respectively arranged with oil filter I(4.4), oil filter II(4.5)；Described oil filter II(4.5) outfan connect electro-hydraulic pressure regulator device oil circuit entrance；Described oil filter II(4.5) outside be parallel with differential pressure transmitter device (4.6), in order to when oil filter II blocking reaches to a certain degree, to send signal, remind and overhaul linear Hydraulic Station and also clean oil circuit.
The most according to claim 1 a kind of can be anti-skidding mine hoist constant deceleration brake electrichydraulic control equipment, it is characterised in that: the outfan manually stop valve (4.8) of described security solenoid valve (4.10) is connected with pressure transducer (2.12).
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| CN201410748204.3A CN104444919B (en) | 2014-12-10 | 2014-12-10 | Mine hoist constant deceleration brake electrichydraulic control equipment that can be anti-skidding |
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| CN108298452A (en) * | 2018-01-26 | 2018-07-20 | 太原理工大学 | Elevator list damper brake group redundant hydraulic control loop |
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| CN105927683B (en) * | 2016-07-08 | 2018-01-02 | 四川宏华石油设备有限公司 | Tube drawbench hoisting mechanism hydraulic control system |
| CN106315322B (en) * | 2016-11-09 | 2017-11-07 | 中国矿业大学(北京) | A kind of intelligent anti-skid safety brakes of mine hoist |
| CN106348120B (en) * | 2016-11-09 | 2017-10-10 | 中国矿业大学(北京) | A kind of mine hoist intelligent and safe brakes |
| US11203510B2 (en) | 2018-07-31 | 2021-12-21 | Otis Elevator Company | Electrohydraulic damper for elevator system |
| CN110104531B (en) * | 2019-05-21 | 2021-10-01 | 山东东山新驿煤矿有限公司 | Elevator control protection system and control method based on constant-deceleration hydraulic station |
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