CN204474236U - Mine hoist constant deceleration brake electrohydraulic control equipment that can be anti-skidding - Google Patents
Mine hoist constant deceleration brake electrohydraulic control equipment that can be anti-skidding Download PDFInfo
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- CN204474236U CN204474236U CN201420769755.3U CN201420769755U CN204474236U CN 204474236 U CN204474236 U CN 204474236U CN 201420769755 U CN201420769755 U CN 201420769755U CN 204474236 U CN204474236 U CN 204474236U
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Abstract
The utility model belongs to brake for elevator control technology, proposes a kind of mine hoist constant deceleration brake electrohydraulic control equipment that can be anti-skidding.Propose electrohydraulic control equipment include three-phase uninterruption power source UPS(3), linear hydraulic station (4) and two close cycles control apparatus (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) to be connected with the mouth of two close cycles control apparatus respectively by the normally closed contact of relay contactor, open contact and to switch; The oil circuit mouth 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).The utility model achieves the constant deceleration brake of mine hoist, and in safety arrestment process, avoid slip and the wriggling of steel rope.
Description
Technical field
The utility model belongs to mine hoist Brake Control, is specifically related to a kind of mine hoist constant deceleration brake electrohydraulic control equipment that can be anti-skidding.
Background technology
Mine hoist braking comprises service braking and safety arrestment; Described safety arrestment is mine hoist or mine winder, and the braking of sudden stop during deadly condition occurs in operational process.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 seldom uses; Two stage braking is a kind of traditional safety arrestment mode, belongs to constant moment of force braking, adopts two-stage brake hydraulic station as the feed apparatus of disc-brake; Two stage braking process is exactly be divided into secondary to brake the whole lock torques needed for certain gig; But two stage braking mainly exists following shortcoming: 1) during safety arrestment, braking force point two-stage applies to get on, and braking procedure comprises hoisting cable and derrick or headframe facility to mechanical equipment and impacts large, there is potential safety hazard; 2) heavy lift and decentralization process, the Tension Difference difference of hoisting cable significantly, for same used two-stage brake hydraulic station, take into account heavy lift and weight transfers the significant operating mode of two species diversity, debug difficulties, and braking effect is not good; The special perseverance deceleration Hydraulic Station of indivedual outfit is as disk brake feed apparatus, known permanent deceleration Hydraulic Station is equivalent on the basis of two-stage brake hydraulic station, add the oil sources and electro-hydraulic pressure regulation link that control to provide for slowing down for perseverance, although overcome some problems that two-stage brake hydraulic station exists, also there are some shortcomings, as: 1) service braking and constant deceleration brake process oil sources used and electro-hydraulic pressure regulator device be separately and repeat to arrange, permanent deceleration Hydraulic Station complex structure, debug difficulties, though braking effect is improved, poor repeatability; 2) safety arrestment is a random event, cannot regularly to realizing permanent deceleration link or unit carries out in-use performance checking in daily production process, until when permanent deceleration needs place in operation, permanent deceleration link or unit may be malfunctioning, there is other potential safety hazard equally; 3) in safety arrestment process, there is the switching decelerating to two stage braking and one-level braking from perseverance, there is potential safety hazard in handoff procedure; 4) no matter two-stage brake hydraulic station is adopted, still special perseverance deceleration Hydraulic Station is adopted, secondary or one-level braking are all implemented in put in place well head (end) interval of point station of distance, impact and still can not reduce and avoid, the parking even if gig normally puts in place, also often has large vibrations and the sound in the moment of stopping; 5) may there is serious steel cable sliding and crawl in safety arrestment and docking process.
If steel cable sliding and wriggle seriously there is potential safety hazard equally, affect simultaneously lifting container put in place parking accuracy, affect raising efficiency and safety.
Utility model content
For solving the problems of the technologies described above, the purpose of this utility model proposes a kind of mine hoist constant deceleration brake electrohydraulic control equipment that can be anti-skidding.
The utility model adopts following technical scheme for completing above-mentioned purpose:
Mine hoist constant deceleration brake electrohydraulic control equipment that can be anti-skidding, described electrohydraulic control equipment includes three-phase uninterruption power source UPS, linear hydraulic station and two close cycles control apparatus, described two close cycles control apparatus includes pressure closed loop and speed closed loop, the pressure sensor of described pressure closed loop detects the pressure closed loop signal of force value as two close cycles control apparatus input end of disk brake, the speed sensor of described speed closed loop detect mine hoist running velocity value and as the speed closed loop signal of two close cycles control apparatus input end, described linear hydraulic station includes electro-hydraulic pressure regulator device, security solenoid valve, hydraulic operated valve and with thinking that electro-hydraulic pressure regulator device provides the oil pump of pressure oil, described electro-hydraulic pressure regulator device is as work or for subsequent use two, can carry out work and switching for subsequent use by controlling relay contactor, described oil pump is corresponding two electro-hydraulic pressure regulator devices two, two described oily pump motors are communicated with three-phase uninterruption power source UPS respectively by the normally closed contact of relay contactor, open contact, the electric signal input end of the electro-hydraulic pressure regulator device described in two is connected with the mouth of two close cycles control apparatus respectively by the normally closed contact of relay contactor, open contact, receives speed closed loop electric signal, the pressure closed loop electric signal from two close cycles control apparatus, 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, electro-hydraulic pressure regulator device by the speed closed loop electric signal received or pressure closed loop electric signal linearly ratio convert the aperture that pressure signal controls in-built apportioning valve to, hydraulic operated valve selects work or emergency bearing oil pump as the oil sources of linear hydraulic station fuel feeding according to oil pressure condition automatically, the mouth of hydraulic operated valve is connected with the input end of security solenoid valve, described security solenoid valve is at least two that are arranged in parallel, the mouth of described security solenoid valve connects the oil circuit of disc-brake, by security solenoid valve for disk brake provides the oil sources of relevant pressure, allow disk brake linearly ratio apply corresponding braking force to mine hoist, perform safety arrestment, service braking, in perseverance deceleration safety arrestment process, electro-hydraulic pressure regulator device receives the speed closed loop electric signal that two close cycles control apparatus exports, pressure closed loop electric signal, and linearly ratio converts the aperture that pressure signal controls in-built apportioning valve to, make gig in secondary safety arrestment process, speed is successively decreased by the given deceleration/decel preset, by direction of improvement or the size of load and the impact of safety arrestment spot speed size, when the overall process of secondary safety arrestment all adopts permanent deceleration to control, and when the mean deceleration angle value of time safety arrestment process keeps constant, reduce safety arrestment process comprises hoisting cable impact to mechanical equipment, eliminate safe hidden trouble, guarantee steady safety in stopping-down process, vibrations when elimination or minimizing are stopped and sound.
Described two close cycles control apparatus includes speed ring, pressure ring and power amplifier; Described pressure ring includes clipper, pressure drop rate killer and pressure sensor between service brake pressure setter, pressure ring comparator, pressure regulator, pressure regulatory region; Described pressure sensor is used for carrying out Real-Time Monitoring to the actual pressure of disc-brake; The mouth of described pressure sensor is connected to the input end of pressure ring comparator, and the actual pressure at linear hydraulic station is sent into pressure ring comparator; Described service brake pressure setter is connected to the input end of pressure ring comparator by the open contact of safety relay AC, the setting pressure in service braking process is sent into pressure ring comparator; In described pressure ring comparator, the actual pressure at the setting pressure given in service braking process and linear hydraulic station is compared; The mouth of described pressure ring comparator is connected to the input end of pressure regulator; The mouth of described pressure regulator is connected with electro-hydraulic pressure regulator device by power amplifier, by power amplifier, power gain is carried out to the weak electric signal that pressure closed loop exports, adjust to drive the carrying out of electro-hydraulic pressure regulator device to linear hydraulic station pressure in linear Hydraulic Station; Between described pressure regulatory region, the mouth of clipper is connected to the amplitude limit input end of pressure regulator by the normally closed contact of safety relay AC, implement to carry out the control of upper and lower limit amplitude limit to the output signal of pressure regulator in permanent deceleration conditioning period in safety arrestment process, impel lock torque more even, brake more steady; In service braking process, the normally closed contact of safety relay AC disconnects, and between pressure regulatory region, the pressure amplitude limit of clipper is cancelled.
Described speed ring includes safety arrestment speed setter, speed ring comparator, speed regulator and speed sensor; The input end of described safety arrestment speed setter is connected with speed sensor by the open contact of safety relay AC; Described speed sensor is arranged on mine hoist, in order to carry out Real-Time Monitoring to the speed of mine hoist; The mouth of described speed sensor, described safety arrestment speed setter is all connected with the input end of speed ring comparator, gives 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 to successively decrease the numerical value formed by the deceleration/decel of setting using the spot speed of mine hoist safety braking as initial value in safety arrestment process; Compare given speed and actual speed in described speed ring comparator, the mouth of speed ring comparator is connected to the input end of speed regulator; The mouth of speed regulator is connected to the input end of pressure ring comparator, the setting pressure in safety arrestment process is sent into the input end of pressure ring comparator; Pressure ring comparator compares the actual pressure that the setting pressure in safety arrestment process and pressure sensor send into pressure ring comparator; In perseverance deceleration safety arrestment process, pressure adjustment is carried out according in the restriction interval of the velocity deviation situation of speed closed loop clipper between pressure regulatory region in linear hydraulic station, the speed of gig in safety arrestment process is successively decreased by the deceleration/decel of setting, by direction of improvement or the size of load and the impact of safety arrestment spot speed size, safety arrestment process average deceleration value keeps constant.
Deceleration/decel set by described safety arrestment speed setter implements the constant deceleration brake of different deceleration value according to the difference between heavy lift or the direction of transferring and lifting container location; Heavy lift when there is safety arrestment, the lifting deceleration/decel as1 interval in well of weight is less than the lifting deceleration/decel as2 of weight between shaft bottom or bank, and the lifting deceleration/decel as2 of weight between shaft bottom or bank is less than the deceleration/decel as3 of weight at point station; When weight is transferred and safety arrestment occurs, weight interval deceleration/decel bs1 that transfers in well is less than weight transfers deceleration/decel bs2 between shaft bottom or bank; The lifting deceleration/decel as1 interval in well of weight is greater than that weight is interval in well transfers deceleration/decel bs1; The lifting deceleration/decel as2 of weight between shaft bottom or bank is greater than weight and transfers deceleration/decel bs2 between shaft bottom or bank; According to different situations, set different deceleration/decels, mine hoist is comprised in different situations normally put in place to stop and selects to implement the constant deceleration brake of different deceleration value, reach the object avoiding or reduce steel cable sliding and wriggling, make safety arrestment and stopping brake more steady.
The oil circuit input end of described oil pump, mouth are respectively arranged with oil filter I, oil filter II; The mouth 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 acquires a certain degree, sends signal, reminds the linear Hydraulic Station of maintenance and clean oil circuit.
The mouth of described security solenoid valve manually shutoff valve is connected with pressure sensor.
The utility model proposes a kind of mine hoist constant deceleration brake electrohydraulic control equipment that can be anti-skidding, adopt technique scheme, do not need to be equipped with special perseverance deceleration Hydraulic Station, can according to the lifting of weight or the interval of transferring residing for direction and container, mine hoist realizes the perseverance deceleration safety arrestment of different deceleration value, the overall process of safety arrestment is made all to adopt permanent deceleration safety arrestment, and, at the perseverance deceleration conditioning period of safety arrestment process, oil pump still works and provides oil sources for perseverance deceleration adjustment, service braking and permanent deceleration safety arrestment share electro-hydraulic pressure regulator device and carry out pressure adjustment, achieve the constant deceleration brake of mine hoist, and in safety arrestment process, avoid or reduce slip and the wriggling of steel rope, there is overall performance good, the feature that safe reliability is high, the utility model does not have particular/special requirement to linear hydraulic station, linear hydraulic station used principle is simple, its oil circuit and device used are less cleaner and tidier, the cost realized required for permanent deceleration is lower, performance is more superior, constant deceleration brake and service braking share electro-hydraulic pressure regulator device, the task performance of oil circuit and 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 rope, have obvious social and economic benefits.
Accompanying drawing explanation
Fig. 1 is functional block diagram of the present utility model.
Fig. 2 is the structural representation of two close cycles control apparatus in utility model.
Fig. 3 is the signal of deceleration value under different situations.
In figure, 1, relay contactor, 2, two close cycles control apparatus, 2.1, safety relay AC, 2.2, safety arrestment speed setter, 2.3, speed ring comparator, 2.4, speed regulator, 2.5, pressure ring comparator, 2.6, service brake pressure setter, 2.7, pressure regulator, 2.8, clipper between pressure regulatory region, 2.9, pressure drop rate killer, 2.10, power amplifier, 2.11, speed sensor, 2.12, pressure sensor, 3, three-phase uninterruption power source UPS; 4, linear hydraulic station, 4.1, electro-hydraulic pressure regulator device, 4.2, electrical 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, manual shutoff valve, 4.9, compression indicator, 4.10. security solenoid valve, 5, disk brake, 6, mine hoist; D, safety arrestment origination point, T1, shut off cock operating point, T2, point station, interval in H1, well, between H2, shaft bottom or bank.
Detailed description of the invention
With specific embodiment, the utility model is illustrated by reference to the accompanying drawings:
As shown in Figure 1, a kind of can be anti-skidding mine hoist constant deceleration brake electrohydraulic control equipment, described electrohydraulic control equipment includes three-phase uninterruption power source UPS3, linear hydraulic station 4 and two close cycles control apparatus 2, described two close cycles control apparatus 2 includes pressure closed loop and speed closed loop, the pressure sensor 2.12 of described pressure closed loop detects the pressure closed loop signal of force value as two close cycles control apparatus input end of disk brake, the speed sensor 2.11 of described speed closed loop detect mine hoist running velocity value and as the speed closed loop signal of two close cycles control apparatus input end, 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, for being provided with work or for subsequent use two, can carry out work and switching for subsequent use by controlling relay contactor 1, described oil pump 4.3 is two that corresponding two electro-hydraulic pressure regulator devices are arranged, the electrical motor 4.2 of two described oil pumps 4.3 is communicated with three-phase uninterruption power source UPS3 respectively by the normally closed contact of relay contactor 1, open contact, 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, realizes constant deceleration brake and controls, the electric signal input end of two described electro-hydraulic pressure regulator devices 4.1 is connected with the mouth of two close cycles control apparatus respectively by the normally closed contact of relay contactor 1, open contact, receives speed closed loop electric signal, the pressure closed loop electric signal from two close cycles control apparatus 2, 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, electro-hydraulic pressure regulator device 4.1 by the speed closed loop electric signal received or pressure closed loop electric signal linearly ratio convert the aperture that pressure signal controls in-built apportioning valve to, hydraulic operated valve 4.7 selects work or emergency bearing oil pump as the oil sources of linear hydraulic station fuel feeding according to oil pressure condition automatically, the mouth of hydraulic operated valve 4.7 is connected with the input end of security solenoid valve 4.10, described security solenoid valve 4.10 is at least two that are arranged in parallel, in the end of a period moment just power-off of constant deceleration brake, make the reliable thoroughly oil return of disk brake 5, guarantee the safety of braking, in this embodiment, described security solenoid valve 4.10 is two of being arranged in parallel, the mouth of described security solenoid valve 4.10 connects the oil circuit of disc-brake 5, by security solenoid valve 4.10 for disk brake 5 provides the oil sources of relevant pressure, allow disk brake 5 linearly ratio apply corresponding braking force to mine hoist 6, perform safety arrestment, service braking, in perseverance deceleration safety arrestment process, electro-hydraulic pressure regulator device 4.1 receives the speed closed loop electric signal that two close cycles control apparatus 2 exports, pressure closed loop electric signal, and linearly ratio converts the aperture that pressure signal controls in-built apportioning valve to, make gig in secondary safety arrestment process, speed is successively decreased by the given deceleration/decel preset, by direction of improvement or the size of load and the impact of safety arrestment spot speed size, when the overall process of secondary safety arrestment all adopts permanent deceleration to control, and when the mean deceleration angle value of time safety arrestment process keeps constant, reduce safety arrestment process comprises hoisting cable impact to mechanical equipment, eliminate safe hidden trouble, guarantee steady safety in stopping-down process, vibrations when elimination or minimizing are stopped and sound.
As shown in Figure 2, described two close cycles control apparatus 2 includes speed ring, pressure ring and power amplifier 2.10; Described pressure ring includes clipper 2.8 between service brake pressure setter 2.6, pressure ring comparator 2.5, pressure regulator 2.7, pressure regulatory region, pressure drop rate killer 2.9 and pressure sensor 2.12; Described pressure sensor 2.12 is for carrying out Real-Time Monitoring to the actual pressure of disc-brake 2.7; The mouth of described pressure sensor 2.12 is connected to the input end of pressure ring comparator 2.5, and the actual pressure at linear hydraulic station 4 is sent into pressure ring comparator 2.5; Described service brake pressure setter 2.6 is connected to the input end of pressure ring comparator 2.5 by the open contact of safety relay AC2.1, the setting pressure in service braking process is sent into pressure ring comparator 2.5; In described pressure ring comparator 2.5, the actual pressure at the setting pressure given in service braking process and linear hydraulic station 4 is compared; The mouth of described pressure ring comparator 2.5 is connected to the input end of pressure regulator 2.7; The mouth 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 by power amplifier 2.10 pairs of pressure closed loops carries out power gain, adjusts to drive the carrying out of electro-hydraulic pressure regulator device 4.1 pairs of linear hydraulic station pressure in linear Hydraulic Station; Between described pressure regulatory region, the mouth of clipper 2.8 is connected to the amplitude limit input end of pressure regulator 2.7 by the normally closed contact of safety relay AC2.1, implement to carry out the control of upper and lower limit amplitude limit to the output signal of pressure regulator in permanent deceleration conditioning period in safety arrestment process, impel lock torque more even, brake more steady; In service braking process, the normally closed contact of safety relay AC2.1 disconnects, and between pressure regulatory region, the pressure amplitude limit of clipper 2.8 is cancelled.
Described speed ring includes safety arrestment speed setter 2.2, speed ring comparator 2.3, speed regulator 2.4 and speed sensor 2.11; The input end of described safety arrestment speed setter 2.2 is connected with speed sensor 2.11 by the open contact of safety relay AC2.1; Described speed sensor 2.11 is arranged on mine hoist, in order to carry out Real-Time Monitoring to the speed of mine hoist; The mouth of described speed sensor 2.11, described safety arrestment speed setter 2.2 is all connected with the input end of speed ring comparator 2.3, gives 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 to successively decrease the numerical value formed by the deceleration/decel of setting using the spot speed of mine hoist safety braking as initial value in safety arrestment process; Compare given speed and actual speed in described speed ring comparator 2.3, the mouth of speed ring comparator 2.3 is connected to the input end of speed regulator 2.4; The mouth of speed regulator 2.4 is connected to the input end of pressure ring comparator 2.5, the setting pressure in safety arrestment process is sent into the input end of pressure ring comparator; The actual pressure that setting pressure in pressure ring comparator 2.5 pairs of safety arrestment processes and pressure sensor 2.12 send into pressure ring comparator compares; In perseverance deceleration safety arrestment process, pressure adjustment is carried out according in the restriction interval of the velocity deviation situation of speed closed loop clipper between pressure regulatory region in linear hydraulic station, the speed of gig in safety arrestment process is successively decreased by the deceleration/decel of setting, by direction of improvement or the size of load and the impact of safety arrestment spot speed size, safety arrestment process average deceleration value keeps constant.
As shown in Figure 3, the deceleration/decel set by described safety arrestment speed 2.2 setter implements the constant deceleration brake of different deceleration value according to the difference between heavy lift or the direction of transferring and lifting container location; Heavy lift when there is safety arrestment, the lifting deceleration/decel as1 interval in well of weight is less than the lifting deceleration/decel as2 of weight between shaft bottom or bank, and the lifting deceleration/decel as2 of weight between shaft bottom or bank is less than the deceleration/decel as3 of weight at point station; When weight is transferred and safety arrestment occurs, weight interval deceleration/decel bs1 that transfers in well is less than weight transfers deceleration/decel bs2 between shaft bottom or bank; The lifting deceleration/decel as1 interval in well of weight is greater than that weight is interval in well transfers deceleration/decel bs1; The lifting deceleration/decel as2 of weight between shaft bottom or bank is greater than weight and transfers deceleration/decel bs2 between shaft bottom or bank; According to different situations, set different deceleration/decels, mine hoist is comprised in different situations normally put in place to stop and selects to implement the constant deceleration brake of different deceleration value, reach the object avoiding or reduce steel cable sliding and wriggling, make safety arrestment and stopping brake more steady.
The oil circuit input end of described oil pump 4.3, mouth are respectively arranged with oil filter I4.4, oil filter II4.5; The mouth 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 acquires a certain degree, sends signal, reminds the linear Hydraulic Station of maintenance and clean oil circuit.
The mouth of described security solenoid valve 4.10 manually shutoff valve 4.8 is connected with pressure sensor 2.12.
Electro-hydraulic pressure regulator device 4.1 in described linear hydraulic station 4, except in service braking process by electric signal linearly ratio convert to except pressure signal, also ejusdem generis work is kept in the perseverance deceleration control process of safety arrestment, only just quit work when emergency, guarantee mine hoist 6 stably stop.
Electrical motor 4.2 and oil pump 4.3 in described linear hydraulic station 4, except keep running in service braking process except, also keep running in the perseverance deceleration control process of safety arrestment, and when only having emergency, electrical motor 4.2 and oil pump 4.3 thereof are just out of service.
In service braking process, electrical motor 4.2 starts running 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 the filtration of oil filter I4.4 and oil filter II4.5, pressure oil arrives the oil circuit entrance of electro-hydraulic pressure regulator device 4.1, when the signal of the mouth of two close cycles control apparatus 2 and the telecommunication input terminal of electro-hydraulic pressure regulator device 4.1 is zero, the pressure oil that oil pump 4.2 exports is got back to through electro-hydraulic pressure regulator device 4.1 in the fuel tank at linear hydraulic station 4, now compression indicator 4.9 displayed 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 will port A or B of pressure be had to be communicated with its delivery port P, play the effect of work or oil sources for subsequent use automatic switchover, along with the signal value of the mouth of two close cycles control apparatus 2 and the telecommunication input terminal of electro-hydraulic pressure regulator device 4.1 raises or reduces, the system oil pressure at linear hydraulic station 4 is followed and is raised or reduce, when security solenoid valve 4.10 obtains electric, the oil circuit pressure of disk brake 5 also changes thereupon, disk brake 5 carries out declutching or tight lock action and service braking thereupon, when security solenoid valve 4.10 power-off, the hydraulic oil of disk brake 5 is through security solenoid valve 4.10 thoroughly oil return, all braking forces are applied on the brake disc of mine hoist 6 by disk brake 5, mine hoist 6 stably stop.
In safety arrestment process, oil pump motor 4.2 continues to be powered by three-phase uninterruption power source UPS3 and drives oil pump 4.3 to provide oil sources for linear hydraulic station 4, the output resume of two close cycles control apparatus 2 carries out regulable control to electro-hydraulic pressure regulator device 4.1, two close cycles control apparatus 2 monitors safety arrestment and mine hoist 6 running velocity of moment occurs as initial value, and reduce by given deceleration value, the actual speed that the given speed formed and speed sensor 2.11 detect compares, when actual speed is greater than given speed, closed loop adjustment in two close cycles control apparatus 2, the output of two close cycles control apparatus 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 is also toward the direction action of tight lock, strengthen lock torque, make mine hoist 6 strengthen deceleration/decel and carry out braking deceleration, otherwise when actual speed is less than given speed, the output of two close cycles control apparatus 2 raises, system oil pressure in linear hydraulic station 4 raises, the oil-filled supercharging of disk brake 5 is also toward the direction action of declutching, and reduce lock torque, the deceleration/decel of mine hoist 6 decreases, the result that speed and pressure closed loop regulate, during the permanent deceleration safety arrestment of enforcement, when the mean deceleration of secondary braking maintains substantially constant, reaches the object of permanent deceleration safety arrestment.
The foregoing is only the preferred embodiment that the utility model realizes mine hoist constant deceleration brake; protection domain of the present utility model is not limited thereto, and anyly all belongs within the utility model protection domain based on the equivalent transformation in technical solutions of the utility model.
Claims (5)
1. a mine hoist constant deceleration brake electrohydraulic control equipment that can be anti-skidding, is characterized in that: described electrohydraulic control equipment includes three-phase uninterruption power source UPS(3), linear hydraulic station (4) and two close cycles control apparatus (2); Described two close cycles control apparatus (2) includes pressure closed loop and speed closed loop; 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 as work or for subsequent use two; Described oil pump (4.3) is two that corresponding two electro-hydraulic pressure regulator devices are arranged; The electrical motor (4.2) of two described oil pumps (4.3) is respectively by the normally closed contact of relay contactor (1), open contact and three-phase uninterruption power source UPS(3) be communicated with; The electric signal input end of two described electro-hydraulic pressure regulator devices (4.1) is connected with the mouth of two close cycles control apparatus respectively by the normally closed contact of relay contactor (1), open contact; 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 of hydraulic operated valve (4.7) respectively; The mouth of hydraulic operated valve (4.7) is connected with the input end of security solenoid valve (4.10); Described security solenoid valve (4.10) is at least two that are arranged in parallel; The mouth of described security solenoid valve (4.10) connects the oil circuit of disc-brake (5).
2. according to claim 1 a kind of can be anti-skidding mine hoist constant deceleration brake electrohydraulic control equipment, it is characterized in that: described two close cycles control apparatus (2) includes speed ring, pressure ring and power amplifier (2.10); Described pressure ring includes clipper (2.8), pressure drop rate killer (2.9) and pressure sensor (2.12) between service brake pressure setter (2.6), pressure ring comparator (2.5), pressure regulator (2.7), pressure regulatory region; The mouth of described pressure sensor (2.12) is connected to the input end of pressure ring comparator (2.5); Described service brake pressure setter (2.6) is by safety relay AC(2.1) open contact be connected to the input end of pressure ring comparator (2.5); In described pressure ring comparator (2.5), the actual pressure of the setting pressure given in service braking process and linear hydraulic station (4) is compared; The mouth of described pressure ring comparator (2.5) is connected to the input end of pressure regulator (2.7); The mouth of described pressure regulator (2.7) is connected with electro-hydraulic pressure regulator device (4.1) by power amplifier (2.10); Between described pressure regulatory region, the mouth of clipper (2.8) is by safety relay AC(2.1) normally closed contact be connected to the amplitude limit input end of pressure regulator (2.7);
Described speed ring includes safety arrestment speed setter (2.2), speed ring comparator (2.3), speed regulator (2.4) and speed sensor (2.11); The input end of described safety arrestment speed setter (2.2) is by safety relay AC(2.1) open contact be connected with speed sensor (2.11); Described speed sensor (2.11) is arranged on mine hoist; Described speed sensor (2.11), the mouth of described safety arrestment speed setter (2.2) are all connected with the input end of speed ring comparator (2.3); The given speed of safety arrestment speed setter (2.2) is to successively decrease the numerical value formed by the deceleration/decel of setting using the spot speed of mine hoist safety braking as initial value in safety arrestment process; Compare given speed and actual speed in described speed ring comparator (2.3), the mouth of speed ring comparator (2.3) is connected to the input end of speed regulator (2.4); The mouth of speed regulator (2.4) is connected to the input end of pressure ring comparator (2.5).
3. according to claim 2 a kind of can be anti-skidding mine hoist constant deceleration brake electrohydraulic control equipment, it is characterized in that: the deceleration/decel set by described safety arrestment speed setter (2.2) implements the constant deceleration brake of different deceleration value according to the difference between heavy lift or the direction of transferring and lifting container location; Heavy lift when there is safety arrestment, the lifting deceleration/decel as1 interval in well of weight is less than the lifting deceleration/decel as2 of weight between shaft bottom or bank, and the lifting deceleration/decel as2 of weight between shaft bottom or bank is less than the deceleration/decel as3 of weight at point station; When weight is transferred and safety arrestment occurs, weight interval deceleration/decel bs1 that transfers in well is less than weight transfers deceleration/decel bs2 between shaft bottom or bank; The lifting deceleration/decel as1 interval in well of weight is greater than that weight is interval in well transfers deceleration/decel bs1; The lifting deceleration/decel as2 of weight between shaft bottom or bank is greater than weight and transfers deceleration/decel bs2 between shaft bottom or bank.
4. according to claim 1 a kind of can be anti-skidding mine hoist constant deceleration brake electrohydraulic control equipment, it is characterized in that: oil circuit input end, the mouth of described oil pump (4.3) are respectively arranged with oil filter I(4.4), oil filter II(4.5); Described oil filter II(4.5) mouth connect the oil circuit entrance of electro-hydraulic pressure regulator device; Described oil filter II(4.5) outside be parallel with differential pressure transmitter device (4.6).
5. according to claim 1 a kind of can be anti-skidding mine hoist constant deceleration brake electrohydraulic control equipment, it is characterized in that: the mouth of described security solenoid valve (4.10) manually shutoff valve (4.8) is connected with pressure sensor (2.12).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420769755.3U CN204474236U (en) | 2014-12-10 | 2014-12-10 | Mine hoist constant deceleration brake electrohydraulic control equipment that can be anti-skidding |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420769755.3U CN204474236U (en) | 2014-12-10 | 2014-12-10 | Mine hoist constant deceleration brake electrohydraulic control equipment that can be anti-skidding |
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| Publication Number | Publication Date |
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| CN204474236U true CN204474236U (en) | 2015-07-15 |
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| CN201420769755.3U Expired - Fee Related CN204474236U (en) | 2014-12-10 | 2014-12-10 | Mine hoist constant deceleration brake electrohydraulic control equipment that can be anti-skidding |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104444919A (en) * | 2014-12-10 | 2015-03-25 | 洛阳源创电气有限公司 | Non-slip constant deceleration brake elector-hydraulic control set for mine hoist |
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2014
- 2014-12-10 CN CN201420769755.3U patent/CN204474236U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104444919A (en) * | 2014-12-10 | 2015-03-25 | 洛阳源创电气有限公司 | Non-slip constant deceleration brake elector-hydraulic control set for mine hoist |
| CN104444919B (en) * | 2014-12-10 | 2016-10-05 | 洛阳源创电气有限公司 | Mine hoist constant deceleration brake electrichydraulic control equipment that can be anti-skidding |
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