CN104477809B - The two close cycles adjusting means of mine hoist braking and braking method - Google Patents
The two close cycles adjusting means of mine hoist braking and braking method Download PDFInfo
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- CN104477809B CN104477809B CN201410748302.7A CN201410748302A CN104477809B CN 104477809 B CN104477809 B CN 104477809B CN 201410748302 A CN201410748302 A CN 201410748302A CN 104477809 B CN104477809 B CN 104477809B
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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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Abstract
The invention belongs to mine hoist Brake Control, propose the two close cycles adjusting means of a kind of mine hoist braking.The constant deceleration brake of the two close cycles adjusting means of a kind of mine hoist braking proposed shares Hydraulic Station (15) and electro-hydraulic pressure regulator device (13) with service braking；The oil pressure of Hydraulic Station (15) is adjusted by electro-hydraulic pressure regulator device (13) by two close cycles adjusting means；Two close cycles adjusting means includes speed ring, pressure rings and power amplifier (10)；Pressure rings includes service brake pressure and gives device (6), pressure rings comparator (5), pressure regulator (7), the interval amplitude limiter (8) of pressure regulation, pressure rate of descent limiter (9) and pressure transducer (12)；Speed ring includes safety arrestment speed setter (2), speed ring comparator (3), speed regulator (4) and velocity sensor (11).Invention achieves elevator can the purpose of safety and steady Brake stop.
Description
Technical field
The invention belongs to mine hoist Brake Control, be specifically related to two close cycles adjusting means and the braking method of the braking of a kind of mine hoist.
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 grades 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；Constant deceleration brake is 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 constant deceleration brake overcomes some problems that two stage braking exists, but there is also other shortcoming, 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.
Summary of the invention
For solving above-mentioned technical problem, the purpose of the present invention is to propose to two close cycles adjusting means and the braking method of a kind of mine hoist braking.
The present invention takes techniques below scheme for completing foregoing invention purpose:
The two close cycles adjusting means of a kind of mine hoist braking, described mine hoist braking includes safety arrestment and service braking；Described safety arrestment uses constant deceleration brake；Described constant deceleration brake and service braking share Hydraulic Station and electro-hydraulic pressure regulator device；The oil sources of described Hydraulic Station is provided by oil pump；The oil pressure of described Hydraulic Station is adjusted by electro-hydraulic pressure regulator device by two close cycles adjusting means；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 of 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 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, power amplifier the weak electric signal exported pressure closed loop carries out power amplification, to drive electro-hydraulic pressure regulator device in Hydraulic Station to be adjusted 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 signal 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, 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.
Pressure rate of descent limiter it is provided with between described pressure regulator and described power amplifier, the rate of descent of pressure is limited by described pressure rate of descent limiter, pressure changing is matched with the action inertia of disc-brake, eliminate safety arrestment and the impact of service braking docking process and the sound, steadily stop.
Upper pressure limit P1 of the interval amplitude limiter of described pressure regulation is less than the oil pressure contacting brake value Pa, low pressure limit P2More than Hydraulic Station residual voltage Pb 。
The Enable Pin of described speed regulator is by the normally opened contact short circuit of safety relay AC, and during mine hoist service braking, speed regulator is blocked, and speed regulator is output as zero, and speed ring is inoperative.
Described safety relay AC includes the coil of wire and contact；Described safety relay AC and safety arrestment speed setter, speed ring comparator, speed regulator, pressure rings comparator, service brake pressure give device, pressure regulator, the interval connection between amplitude limiter, pressure rate of descent limiter of pressure regulation include logical relation, can be realized by hardware or software or software and hardware combining.
The method that the two close cycles adjusting means using above-mentioned mine hoist to brake carries out mine hoist braking, the braking of described mine hoist includes service braking process and safety arrestment process.
During service braking, the coil of wire of safety relay AC obtains electric, and the normally opened contact Guan Bi of safety relay AC, normally-closed contact disconnect, and speed regulator is blocked, and speed ring is inoperative；Meanwhile, the outfan of the interval amplitude limiter of pressure regulation is also disconnected by the normally-closed contact of safety relay AC, and pressure amplitude limit is cancelled；Safety arrestment speed setter keeps monitoring the output valve i.e. speed of service of elevator of velocity sensor in real time, service brake pressure gives the output of device and compares as between setting pressure and actual pressure, closed loop regulation is carried out through pressure regulator, electro-hydraulic pressure regulator device is adjusted by pressure rate of descent limiter and power amplifier and controls by the output signal of pressure regulator, the pressure follow service brake pressure making Hydraulic Station gives the exporting change of device, and disk brake carries out declutching and the tight i.e. service braking of lock action therewith.
During safety arrestment, safety relay AC coil of wire power-off, its normally opened contact disconnects, normally-closed contact Guan Bi, it is cut that service brake pressure gives device, speed regulator is lifted a blockade, the output signal of speed regulator is as setting pressure, and is adjusted pressure by the interval amplitude limiter of pressure regulation；nullSafety arrestment speed setter occurs the elevator speed of service of moment as initial value using monitoring safety arrestment，And by the deceleration decay set，This deceleration set is exactly that safety arrestment gives deceleration，The actual speed that the given speed that initial value and deceleration are formed and velocity sensor are detected compares，When actual speed is more than given speed，Speed ring comparator is output as negative value，The output making speed regulator reduces，The i.e. pressure set-point of pressure rings reduces，Pressure rings comparator is output as negative value，Closed loop regulation is carried out through pressure regulator，Electro-hydraulic pressure regulator device is adjusted by pressure rate of descent limiter and power amplifier and controls by the output signal of pressure regulator，The output pressure in Hydraulic Station is forced to reduce，Disk brake oil return pressure release past tight lock direction action，Increase braking moment，Make mine hoist strengthen deceleration to slow down；When actual speed is less than given speed, speed ring comparator be output as on the occasion of, the output making speed regulator increases, the i.e. pressure set-point of pressure rings increases, pressure rings comparator be output as on the occasion of, closed loop regulation is carried out through pressure regulator, electro-hydraulic pressure regulator device is adjusted by pressure rate of descent limiter and power amplifier and controls by the output signal of pressure regulator, the output pressure in Hydraulic Station is forced to increase, the oil-filled supercharging of disk brake past direction action of declutching, reduce braking moment, make mine hoist reduce deceleration value to slow down, the result of speed closed loop regulation, during implementing permanent deceleration safety arrestment, average deceleration value remains constant, reach the purpose of permanent deceleration safety arrestment.
At safety arrestment implementation Process perseverance deceleration control period, the pressure regulation spectrum of Hydraulic Station is under pressure and regulates the restriction of interval amplitude limiter, limits P under stress2～upper pressure limit P1Interval in be adjusted, it is ensured that the braking moment of safety arrestment is more uniform, and braking procedure is more steady.
The two close cycles adjusting means of a kind of mine hoist braking that the present invention proposes and braking method, safety arrestment uses same Hydraulic Station and electrohydraulic control equipment with service braking, need not be equipped with special permanent deceleration Hydraulic Station, achieving the constant deceleration brake function of mine hoist, having reached elevator can the purpose of safety and steady Brake stop；Compared to existing known technology, 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, compared with known permanent deceleration Hydraulic Station, the permanent oil sources controlled that slows down is provided by links such as the accumulator separately set and electro-hydraulic pressure regulations thereof, the present invention does not has particular/special requirement to Hydraulic Station, Hydraulic Station principle used is simple, its oil circuit and device used are the cleanest and the tidiest, cost required for realizing permanent deceleration is lower, constant deceleration brake and service braking share oil sources and 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 more steady and safety of stopping, have obvious social and economic benefits.
Accompanying drawing explanation
Fig. 1 is the theory diagram of the present invention.
Fig. 2 is the characteristic of the interval amplitude limiter of pressure regulation in the present invention.
In figure: 1, safety relay AC, 2, safety arrestment speed setter, 3, speed ring comparator, 4, speed regulator, 5, pressure rings comparator, 6, service brake pressure give device, 7, pressure regulator, 8, the interval amplitude limiter of pressure regulation, 9, pressure rate of descent limiter, 10, power amplifier, 11. velocity sensors, 12, pressure transducer, 13, electro-hydraulic pressure regulator device, 14, oil pump, 15, Hydraulic Station, 16, disk brake, 17, mine hoist.
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, the two close cycles adjusting means of a kind of mine hoist braking, described mine hoist braking includes safety arrestment and service braking；Described safety arrestment uses constant deceleration brake；Described constant deceleration brake and service braking share Hydraulic Station 15 and electro-hydraulic pressure regulator device 13；The oil sources of described Hydraulic Station 15 is provided by oil pump 14；The oil pressure of described Hydraulic Station 15 is adjusted by electro-hydraulic pressure regulator device 13 by two close cycles adjusting means；Described two close cycles adjusting means 13 includes speed ring, pressure rings and power amplifier 10.
Described pressure rings includes service brake pressure and gives device 6, pressure rings comparator 5, pressure regulator 7, the interval amplitude limiter 8 of pressure regulation, pressure rate of descent limiter 9 and pressure transducer 12；Described pressure transducer 12 is for monitoring in real time the actual pressure of Hydraulic Station 15；The outfan of described pressure transducer 12 is connected to the input of pressure rings comparator 5, and the actual pressure of Hydraulic Station 15 is sent into pressure rings comparator 5；Described service brake pressure is given device 6 and is connected to the input of pressure rings comparator 5 by the normally opened contact of safety relay AC1, and the setting pressure during service braking is sent into pressure rings comparator 5；In described pressure rings comparator 5, the actual pressure of the setting pressure during service braking with Hydraulic Station 15 is compared；The outfan of described pressure rings comparator 5 is connected to the input of pressure regulator 7；The outfan of described pressure regulator 7 is connected with electro-hydraulic pressure regulator device 13 by power amplifier 10, the weak electric signal exported pressure closed loop by power amplifier 10 carries out power amplification, to drive electro-hydraulic pressure regulator device 13 in Hydraulic Station to be adjusted Hydraulic Station pressure；The outfan of the interval amplitude limiter 8 of described pressure regulation is connected to the amplitude limit input of pressure regulator 7 by the normally-closed contact of safety relay AC1, in in during safety arrestment process and enforcement perseverance slow down regulation, the output signal of 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 AC1 disconnects, and the pressure amplitude limit of the interval amplitude limiter 8 of pressure regulation is cancelled.
Described speed ring includes safety arrestment speed setter 2, speed ring comparator 3, speed regulator 4 and velocity sensor 11；The input of described safety arrestment speed setter 2 is connected with velocity sensor 11 by the normally opened contact of safety relay AC1；Described velocity sensor 11 is arranged on mine hoist, in order to monitor the speed of mine hoist in real time；Described velocity sensor 11, the outfan of described safety arrestment speed setter 2 all inputs with speed ring comparator 3 are connected, and give speed ring comparator 3 by the safety arrestment given speed of safety arrestment speed setter 2 and the actual speed of mine hoist 17；The described given speed of safety arrestment speed setter 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 3, the outfan of speed ring comparator 3 is connected to the input of speed regulator 4；The outfan of speed regulator 4 is connected to the input of pressure rings comparator 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 12 are sent into pressure rings comparator by pressure rings comparator 5 compares；During perseverance deceleration safety arrestment, 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.
Pressure rate of descent limiter 9 it is provided with between described pressure regulator 7 and described power amplifier 10, the rate of descent of pressure is limited by described pressure rate of descent limiter 9, pressure changing is matched with the action inertia of disc-brake, eliminate safety arrestment and the impact of service braking docking process and the sound, steadily stop.
As in figure 2 it is shown, upper pressure limit P of the interval amplitude limiter 8 of described pressure regulation1Less than the oil pressure contacting brake value Pa, low pressure limit P2More than Hydraulic Station residual voltage Pb, oil pressure lower limit P2In the certain limit more than Hydraulic Station residual voltage, value is carried out, if value is P according to actual braking effecta/4~Pa/ 3, suitably adjust in the debugging stage according to practical situation.
The Enable Pin of described speed regulator 4 is by the normally opened contact short circuit of safety relay AC1, and during mine hoist service braking, speed regulator is blocked, and speed regulator is output as zero.
Described safety relay AC1 includes the coil of wire and contact；Described safety relay AC1 and safety arrestment speed setter 2, speed ring comparator 3, speed regulator 4, pressure rings comparator 5, service brake pressure give device 6, pressure regulator 7, the interval connection between amplitude limiter 8, pressure rate of descent limiter 9 of pressure regulation include logical relation, can be realized by hardware or software or software and hardware combining.
The method that the two close cycles adjusting means using above-mentioned mine hoist to brake carries out mine hoist braking, the braking of described mine hoist includes service braking process and safety arrestment process.
During service braking, the coil of wire of safety relay AC1 obtains electric, and the normally opened contact Guan Bi of safety relay AC1, normally-closed contact disconnect, and speed regulator 4 is blocked, and speed ring is inoperative；Meanwhile, the outfan of the interval amplitude limiter 8 of pressure regulation is also disconnected by the normally-closed contact of safety relay AC, and pressure amplitude limit is cancelled；Safety arrestment speed setter 2 keeps the output valve to the velocity sensor 11 i.e. speed of service of elevator to monitor in real time, service brake pressure gives the output of device 6 and compares as between setting pressure and actual pressure, closed loop regulation is carried out through pressure regulator 7, electro-hydraulic pressure regulator device 13 is adjusted by pressure rate of descent limiter 9 and power amplifier 10 and is controlled by the output signal of pressure regulator 7, the pressure follow service brake pressure making Hydraulic Station 15 gives the exporting change of device, and disk brake 16 carries out declutching and the tight i.e. service braking of lock action therewith.
During safety arrestment, safety relay AC1 coil of wire power-off, its normally opened contact disconnects, normally-closed contact Guan Bi, it is cut that service brake pressure gives device 6, speed regulator 4 is lifted a blockade, the output signal of speed regulator 4 is as setting pressure, and is adjusted pressure by the interval amplitude limiter 8 of pressure regulation；nullSafety arrestment speed setter 2 occurs the elevator speed of service of moment as initial value using monitoring safety arrestment，And by the deceleration decay set，This deceleration set is exactly that safety arrestment gives deceleration，The actual speed that the given speed that initial value and deceleration are formed and velocity sensor are detected compares，When actual speed is more than given speed，Speed ring comparator 3 is output as negative value，The output making speed regulator 4 reduces，The i.e. pressure set-point of pressure rings reduces，Pressure rings comparator 5 is output as negative value，Closed loop regulation is carried out through pressure regulator 7，Electro-hydraulic pressure regulator device 13 is adjusted by pressure rate of descent limiter 9 and power amplifier 10 and is controlled by the output signal of pressure regulator 7，The output pressure in Hydraulic Station 15 is forced to reduce，Disk brake 16 oil return pressure release past tight lock direction action，Increase braking moment，Make mine hoist strengthen deceleration to slow down；When actual speed is less than given speed, speed ring comparator 3 be output as on the occasion of, the output making speed regulator 4 increases, the i.e. pressure set-point of pressure rings increases, pressure rings comparator 5 be output as on the occasion of, closed loop regulation is carried out through pressure regulator 7, electro-hydraulic pressure regulator device 13 is adjusted by pressure rate of descent limiter 9 and power amplifier 10 and is controlled by the output signal of pressure regulator 7, the output pressure in Hydraulic Station 15 is forced to increase, the oil-filled supercharging of disk brake 16 past direction action of declutching, reduce braking moment, make mine hoist reduce deceleration value to slow down, the result of speed closed loop regulation, during implementing permanent deceleration safety arrestment, average deceleration value remains constant, reach the purpose of permanent deceleration safety arrestment.
At safety arrestment implementation Process perseverance deceleration control period, the pressure regulation spectrum of Hydraulic Station is under pressure and regulates the restriction of interval amplitude limiter, limits P under stress2～upper pressure limit P1Interval in be adjusted, it is ensured that the braking moment of safety arrestment is more uniform, and braking procedure is more steady.
The foregoing is only the present invention and realize method and 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 (6)
1. a two close cycles adjusting means for mine hoist braking, described mine hoist braking includes safety arrestment and service braking；Described safety arrestment uses constant deceleration brake；It is characterized in that: described constant deceleration brake and service braking share Hydraulic Station (15) and electro-hydraulic pressure regulator device (13)；The oil sources of described Hydraulic Station (15) is provided by oil pump (14)；The oil pressure of described Hydraulic Station (15) is adjusted by electro-hydraulic pressure regulator device (13) by two close cycles adjusting means；Described two close cycles adjusting means (13) includes speed ring, pressure rings and power amplifier (10)；
Described pressure rings includes service brake pressure and gives device (6), pressure rings comparator (5), pressure regulator (7), the interval amplitude limiter (8) of pressure regulation, pressure rate of descent limiter (9) and pressure transducer (12)；Described pressure transducer (12) is for monitoring in real time the actual pressure of disc-brake (16)；The outfan of described pressure transducer (12) is connected to the input of pressure rings comparator (5), and the actual pressure of Hydraulic Station (15) is sent into pressure rings comparator (5)；Described service brake pressure gives device (6) by safety relay AC(1) normally opened contact be connected to the input of pressure rings comparator (5), the setting pressure during service braking is sent into pressure rings comparator (5)；In described pressure rings comparator (5), the actual pressure to the setting pressure during service braking with Hydraulic Station (15) is compared；The outfan of described pressure rings comparator (5) is connected to the input of pressure regulator (7)；The outfan of described pressure regulator (7) is connected with electro-hydraulic pressure regulator device (13) by power amplifier (10), the weak electric signal exported pressure closed loop by power amplifier (10) carries out power amplification, to drive electro-hydraulic pressure regulator device in Hydraulic Station (13) to be adjusted Hydraulic Station pressure；The outfan of the interval amplitude limiter of described pressure regulation (8) is by safety relay AC(1) normally-closed contact be connected to the amplitude limit input of pressure regulator (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(1) normally-closed contact disconnect, the pressure amplitude limit of the interval amplitude limiter (8) of pressure regulation is cancelled；
Described speed ring includes safety arrestment speed setter (2), speed ring comparator (3), speed regulator (4) and velocity sensor (11)；The input of described safety arrestment speed setter (2) pass through safety relay AC(1) normally opened contact be connected with velocity sensor (11)；Described velocity sensor (11) is arranged on mine hoist, in order to monitor the speed of mine hoist in real time；Described velocity sensor (11), the outfan of described safety arrestment speed setter (2) all inputs with speed ring comparator (3) are connected, and give speed ring comparator (3) by the safety arrestment given speed of safety arrestment speed setter (2) and the actual speed of mine hoist (17)；The described given speed of safety arrestment speed setter (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 (3), the outfan of speed ring comparator (3) is connected to the input of speed regulator (4)；The outfan of speed regulator (4) is connected to the input of pressure rings comparator (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 (12) are sent into pressure rings comparator by pressure rings comparator (5) compares；During perseverance deceleration safety arrestment, 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 two close cycles adjusting means of a kind of mine hoist the most according to claim 1 braking, it is characterized in that: between described pressure regulator (7) and described power amplifier (10), be provided with pressure rate of descent limiter (9), the rate of descent of pressure is limited by described pressure rate of descent limiter (9), pressure changing is matched with the action inertia of disc-brake, eliminate safety arrestment and the impact of service braking docking process and the sound, steadily stop.
The two close cycles adjusting means of a kind of mine hoist the most according to claim 1 braking, it is characterised in that: upper pressure limit P1 of the interval amplitude limiter (8) of described pressure regulation is more than Hydraulic Station residual voltage Pb less than the oil pressure contacting brake value Pa, low pressure limit P2。
The two close cycles adjusting means of a kind of mine hoist the most according to claim 1 braking, it is characterized in that: the Enable Pin of described speed regulator (4) is by safety relay AC(1) normally opened contact short circuit, during mine hoist service braking, speed regulator is blocked.
The two close cycles adjusting means of a kind of mine hoist the most according to claim 1 braking, it is characterised in that: described safety relay AC(1) include the coil of wire and contact；Described safety relay AC(1) and the connection that gives between device (6), pressure regulator (7), the interval amplitude limiter of pressure regulation (8), pressure rate of descent limiter (9) of safety arrestment speed setter (2), speed ring comparator (3), speed regulator (4), pressure rings comparator (5), service brake pressure include logical relation, hardware or software or software and hardware combining realize.
6. use the method that the two close cycles adjusting means of the mine hoist braking described in claim 1 carries out mine hoist braking, it is characterised in that: the braking of described mine hoist includes service braking process and safety arrestment process；
During service braking, safety relay AC(1) the coil of wire obtain electric, safety relay AC(1) normally opened contact Guan Bi, normally-closed contact disconnect, speed regulator (4) is blocked, and speed ring is inoperative；Meanwhile, the outfan of the interval amplitude limiter (8) of pressure regulation is also disconnected by the normally-closed contact of safety relay AC, and pressure amplitude limit is cancelled；Safety arrestment speed setter (2) keeps monitoring the output valve i.e. speed of service of elevator of velocity sensor (11) in real time, service brake pressure gives the output of device (6) and compares as between setting pressure and actual pressure, closed loop regulation is carried out through pressure regulator (7), electro-hydraulic pressure regulator device (13) is adjusted and controls by pressure rate of descent limiter (9) and power amplifier (10) by the output signal of pressure regulator (7), the pressure follow service brake pressure making Hydraulic Station gives the exporting change of device, disk brake carries out declutching and the tight i.e. service braking of lock action therewith；
During safety arrestment, safety relay AC(1) coil of wire power-off, its normally opened contact disconnects, normally-closed contact Guan Bi, it is cut that service brake pressure gives device (6), speed regulator (4) is lifted a blockade, the output signal of speed regulator (4) is as setting pressure, and is adjusted pressure by the interval amplitude limiter (8) of pressure regulation；nullSafety arrestment speed setter (2) occurs the elevator speed of service of moment as initial value using monitoring safety arrestment，And by the deceleration decay set，This deceleration set is exactly that safety arrestment gives deceleration，The actual speed that the given speed that initial value and deceleration are formed and velocity sensor are detected compares，When actual speed is more than given speed，Speed ring comparator (3) is output as negative value，The output making speed regulator (4) reduces，The i.e. pressure set-point of pressure rings reduces，Pressure rings comparator (5) is output as negative value，Closed loop regulation is carried out through pressure regulator (7)，Electro-hydraulic pressure regulator device (13) is adjusted and controls by pressure rate of descent limiter (9) and power amplifier (10) by the output signal of pressure regulator (7)，The output pressure in Hydraulic Station is forced to reduce，Disk brake (16) oil return pressure release past tight lock direction action，Increase braking moment，Make mine hoist strengthen deceleration to slow down；When actual speed is less than given speed, speed ring comparator (3) be output as on the occasion of, the output making speed regulator (4) increases, the i.e. pressure set-point of pressure rings increases, pressure rings comparator (5) be output as on the occasion of, closed loop regulation is carried out through pressure regulator (7), electro-hydraulic pressure regulator device (13) is adjusted and controls by pressure rate of descent limiter (9) and power amplifier (10) by the output signal of pressure regulator (7), the output pressure in Hydraulic Station is forced to increase, disk brake (16) oil-filled supercharging past direction action of declutching, reduce braking moment, make mine hoist reduce deceleration value to slow down, the result of speed closed loop regulation, during implementing permanent deceleration safety arrestment, average deceleration value remains constant, reach the purpose of permanent deceleration safety arrestment.
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| CN201410748302.7A CN104477809B (en) | 2014-12-10 | 2014-12-10 | The two close cycles adjusting means of mine hoist braking and braking method |
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| CN201410748302.7A CN104477809B (en) | 2014-12-10 | 2014-12-10 | The two close cycles adjusting means of mine hoist braking and braking method |
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| CN104477809A CN104477809A (en) | 2015-04-01 |
| CN104477809B true CN104477809B (en) | 2016-10-05 |
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| 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 |
| CN111352385A (en) * | 2020-03-13 | 2020-06-30 | 湖南网大科技有限公司 | System and method for controlling deceleration motion of working machine |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1044796A (en) * | 1989-02-11 | 1990-08-22 | 顿涅茨克综合技术研究所 | The control monitor unit of lifting means brake system |
| CN2085365U (en) * | 1991-04-09 | 1991-09-25 | 扬州市王庄煤矿 | Brake for lifting machine |
| CN2739158Y (en) * | 2004-10-25 | 2005-11-09 | 黄文彪 | Mining stepless speed-governing winch emergency brake device |
| CN1749150A (en) * | 2004-09-09 | 2006-03-22 | 德马格起重机及部件有限公司 | Safety braking device of a winding drum and working method for lapping the safety brake |
| CN2767413Y (en) * | 2004-12-31 | 2006-03-29 | 山东泰山天盾矿山机械有限公司 | Hoisting winch emergency brake rigging for mining |
| CN204474237U (en) * | 2014-12-10 | 2015-07-15 | 洛阳源创电气有限公司 | The two close cycles control apparatus of mine hoist braking |
-
2014
- 2014-12-10 CN CN201410748302.7A patent/CN104477809B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1044796A (en) * | 1989-02-11 | 1990-08-22 | 顿涅茨克综合技术研究所 | The control monitor unit of lifting means brake system |
| CN2085365U (en) * | 1991-04-09 | 1991-09-25 | 扬州市王庄煤矿 | Brake for lifting machine |
| CN1749150A (en) * | 2004-09-09 | 2006-03-22 | 德马格起重机及部件有限公司 | Safety braking device of a winding drum and working method for lapping the safety brake |
| CN2739158Y (en) * | 2004-10-25 | 2005-11-09 | 黄文彪 | Mining stepless speed-governing winch emergency brake device |
| CN2767413Y (en) * | 2004-12-31 | 2006-03-29 | 山东泰山天盾矿山机械有限公司 | Hoisting winch emergency brake rigging for mining |
| CN204474237U (en) * | 2014-12-10 | 2015-07-15 | 洛阳源创电气有限公司 | The two close cycles control apparatus of mine hoist braking |
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