CN108238561B - Safety arrestment series redundancy two-stage brake hydraulic station and its control method - Google Patents
Safety arrestment series redundancy two-stage brake hydraulic station and its control method Download PDFInfo
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- CN108238561B CN108238561B CN201810017111.1A CN201810017111A CN108238561B CN 108238561 B CN108238561 B CN 108238561B CN 201810017111 A CN201810017111 A CN 201810017111A CN 108238561 B CN108238561 B CN 108238561B
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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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- 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
- B66D5/12—Crane, lift hoist, or winch brakes operating on drums, barrels, or ropes with axial effect
- B66D5/14—Crane, lift hoist, or winch brakes operating on drums, barrels, or ropes with axial effect embodying discs
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- Environmental & Geological Engineering (AREA)
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Abstract
A kind of safety arrestment series redundancy two-stage brake hydraulic station and its control method, hydraulic station includes: oil pump, motor, proportional pressure control valve, overflow valve, one-way throttle valve, accumulator, sensor, B pipe brake, A pipe brake and the solenoid directional control valve for monitoring valve position, one channel, which will be connected, realizes parallel redundancy conducting using two solenoid directional control valve connections in parallel, and a channel, which will be blocked, realizes that series redundancy blocks using two concatenated solenoid directional control valve connections.Using two concatenated solenoid directional control valves, the residual voltage oil circuit of the pressure oil circuit of B pipe brake and proportional pressure control valve is blocked, B pipe brake is made to maintain the first order braking oil pressure value of secondary safety braking in well.There are three channels when safety arrestment, every is all to reach redundancy by two solenoid directional control valves of simultaneously operation, if every has a solenoid directional control valve transposition failure occur, remains to complete this safety arrestment, the sensor diagnostic for monitoring valve position is driven next time to transposition failure, alarm or locking.
Description
Technical field
The present invention relates to a kind of safety arrestment redundant hydraulic station and its methods, especially a kind of to be suitable for brake for lifting machine
Or the safety arrestment series redundancy two-stage brake hydraulic station and its control method of other machine brakes.
Background technique
The 425th article of regulation of " safety regulations in coal mine " executed on October 1st, 2016: safety arrestment must have parallel redundancy
Drainback passage.
E149A shown in 07 month 2013 " mine hoist troubleshooting and technological transformation " Fig. 4-45 of page 186 published
Hydraulic station, although how two solenoid directional control valves 11 not redundancy in parallel, it is in parallel on a channel be known as parallel redundancy
Two solenoid directional control valves, have appearance transposition failure, remain to complete this safety arrestment, referred to as parallel redundancy.It is real in well
When applying first order safety arrestment, according to the 187th page table 4-20, proportional pressure control valve 6 is powered off, and motor 4 powers off, and hydraulic pump 3 stops
Fuel feeding, the pressure oil of B pipe brake powers off simultaneously by two solenoid directional control valves 11 in parallel to be changed to right position and overflow valve 18, stores
Energy device 19 is connected, and oil pressure drops to rapidly overflow valve 18 and sets up first order braking oil pressure, and setting up delay time is to prolong less than 10 seconds
When during, accumulator 19 plays pressure stabilizing and repairing, and first order braking oil pressure value is basically unchanged, realize well in the first level security
Braking；There is transposition failure in any one with two solenoid directional control valves 11 in parallel, does not change if powering off occurs in the right solenoid directional control valve 11
Position is in the transposition failure of left position, and the pressure oil of B pipe brake passes through the right 11 left position of solenoid directional control valve leads with proportional pressure control valve 6
Logical oil return box, oil pressure moment are reduced to zero, B pipe brake and brake suddenly, do not complete first order safety braking functions in well, in well
The huge inertia of the hoisting container of high-ball may cause disconnected rope or abseiling accident, illustrate two solenoid directional control valves 11 in parallel
Not redundancy analyzes its reason: although B pipe brake and overflow valve 18 will be connected, to be connected in parallel with two solenoid directional control valves 11 be superfluous
Remaining, but B pipe brake and proportional pressure control valve will block and be connected in parallel not redundancy with two solenoid directional control valves 11.
The patent high reliability oil return two-stage brake hydraulic station and its control method of ZL200810023108.7, in attached drawing 2,
When implementing first order safety arrestment in well, oil pump 1 stops feed flow and electro-hydraulic pressure regulator device 3 powers off, the pressure oil of brake 8, with
The residual voltage oil circuit of electro-hydraulic pressure regulator device 3 is powered off simultaneously by concatenated solenoid directional control valve G4, G9 and changes to left position blocking, makes brake 8
As closed circuit, enters 6 level pressure overflow of overflow valve from the left position solenoid directional control valve G4, maintain first order braking oil pressure in well.If
There is the transposition failure for being in middle position in solenoid directional control valve G4, and the pressure oil of brake 8 has been blocked to lead to the logical of overflow valve 6
Road, the pressure oil of brake 8 are still to open a sluice gate operating pressure, do not reach first order braking oil pressure in well, lead to the first order in well
Brake failure illustrates concatenated two solenoid directional control valves G4, G9 not redundancy, analyzes its reason: although the oil circuit of brake 8 and electricity
It is redundancy that the oil circuit of liquid regulator 3, which will be blocked with two solenoid directional control valve G4, G9 series connections,.But the oil circuit of brake 8
It to be connected with the oil circuit of overflow valve 6 and not redundancy is connected in series with two solenoid directional control valves G4, G9.
Existing two-stage brake hydraulic station, the problem is that: (1) when safety arrestment damper brake group and power-off proportional overflow
Valve, which needs to block, can not achieve redundancy blocking using two solenoid directional control valve connections in parallel, and two solenoid directional control valves in parallel are appointed
One failure, solenoid directional control valve of the pressure oil of damper brake group Jing Guo failure is connected with the proportional pressure control valve of power-off flows back to oil
Case, damper brake group are braked rapidly, and oil pressure value needed for two stage braking is not kept, and lead to two stage braking failure, in fact it could happen that disconnected rope
Or abseiling accident；(2) when safety arrestment, damper brake group needs to be connected with overflow valve to be connect using two concatenated solenoid directional control valves
It can not achieve redundancy conducting, if first solenoid directional control valve occurs being in the transposition failure that middle position is not turned on, blocked system
Dynamic lock group pressure oil leads to the channel of overflow valve, and the pressure oil of damper brake group is still to open a sluice gate operating pressure, does not reach in well the
Level-one braking oil pressure leads to first order brake failure in well.Realize that redundancy is purpose, two solenoid directional control valve parallel connections not redundancy,
Two solenoid directional control valves series connection not redundancy, " safety regulations in coal mine " the 425th article of regulation: safety arrestment must have returning for parallel redundancy
Oily channel, parallel connection be not equal to redundancy, the formulation of " parallel redundancy " be it is inappropriate, realize safety arrestment redundancy be purpose, no matter
Which kind of coupling method it must reach redundancy with.The conceptual understanding of safety arrestment redundant channel is to pass through the two of installation simultaneously operation
A solenoid directional control valve, any one solenoid directional control valve break down, remain to complete this safety arrestment, while monitoring electromagnetic switch
The fault alarm of valve or locking are driven next time.When redundancy is not achieved with parallel connection, the mistaken ideas of " parallel redundancy " are broken through, explore two
The coupling method of solenoid directional control valve realization redundancy.
Summary of the invention
Technical problem: the purpose of the present invention is for shortcoming present in prior art, provide a kind of structure it is simple,
The good safety arrestment series redundancy two-stage brake hydraulic station of using effect and its control method, by being changed with two electromagnetism in parallel
It is connected to valve and realizes parallel redundancy conducting, or connected with concatenated two solenoid directional control valves of a carrier frequency channel break and realize that series connection is superfluous
Remaining blocking.
Technical solution: safety arrestment series redundancy two-stage brake hydraulic station of the invention, comprising: oil pump, motor, ratio are overflow
Flow valve, overflow valve, one-way throttle valve, accumulator, sensor, B pipe brake, A pipe brake and the electromagnetic switch for monitoring valve position
Valve, the proportional pressure control valve connect oil pump, set that there are two concatenated electromagnetism on the pipeline of the B pipe brake connection oil pump
Reversal valve, set on the pipeline of B pipe brake connection fuel tank there are two solenoid directional control valve in parallel, B pipe brake and accumulator and
The ante-chamber of overflow valve connects, and the back cavity of overflow valve is connect by two solenoid directional control valves in parallel with oil pump and fuel tank；The A group
Solenoid directional control valve in parallel there are two being set on the pipeline that damper brake is communicated with oil pump and fuel tank；It is all provided on all solenoid directional control valves
There is the sensor of monitoring valve position.
The control method of above-mentioned safety arrestment series redundancy two-stage brake hydraulic station, comprises the following processes:
When elevator system works normally, solenoid directional control valve is all powered, and is distinguished by the pressure oil of proportional overflow valve regulation
Enter A pipe brake by the right position of two solenoid directional control valves in parallel and two concatenated right positions of solenoid directional control valve and B control is dynamic
Device, proportional overflow threshold voltage are gradually raised to operating voltage, and oil pressure is gradually raised to operating oil pressure, and brake is opened a sluice gate elevator and normally transported
Turn；Meanwhile the pressure oil of operating oil pressure enters accumulator, the ante-chamber and back cavity of overflow valve by the check valve in one-way throttle valve
Pressure oil be all operating oil pressure, the spool of overflow valve is in close state；
When elevator system service braking, the input voltage of proportional pressure control valve is gradually dropped to zero from operating voltage, accordingly
Oil pressure is gradually dropped to residual voltage, brake combined floodgate brake for elevator from operating oil pressure；
When elevator system breaks down, including full mine is powered off, exceeded the speed limit, reversing, elevator system realizes safety arrestment,
Motor power-off, oil pump fuel cut-off, proportional pressure control valve power-off；Pressure oil in A pipe brake is from two electromagnetic switch in parallel
Valve powers off change to left position oil return box simultaneously, and A pipe brake is braked rapidly.
The elevator system is divided into two kinds of different situations and realizes that safety arrestment is as follows:
1) in the well when hoisting container, which is located at, to break down in well secondary safety brake: the pressure oil of B pipe brake with
The residual voltage oil circuit of proportional pressure control valve by two concatenated solenoid directional control valves simultaneously power off change to left position block, make B pipe brake at
For closed circuit, the back cavity of overflow valve powers off simultaneously by two solenoid directional control valves in parallel changes to left position oil return box, and it is fixed to realize
Pressurized overflow；At this time set up overflow valve oil pressure be two stage braking first order braking oil pressure, set up delay time be less than 10 seconds,
During the delay process, accumulator plays pressure stabilizing and repairing, is adjusted by the throttle valve openings of sizes adjusted in one-way throttle valve
Its topping up of oil, first order braking oil pressure value are basically unchanged, and realize first order safety arrestment in well；Delay time terminates, and B control is dynamic
The pressure oil of device powers off simultaneously by two solenoid directional control valves in parallel and changes to left position oil return box, so that oil pressure is dropped to zero rapidly, in fact
Second level safety arrestment in existing well, reaches full braking state；
2) it the safety arrestment when hoisting container breaks down positioned at well head: should stop immediately, solenoid directional control valve is still in
The pressure oil of energization on state, B pipe brake enters proportional pressure control valve oil return box by the right bit stream of solenoid directional control valve, passes through simultaneously
Two solenoid directional control valves in parallel power off simultaneously changes to left position oil return box, and B pipe brake is braked rapidly, realizes one level security of well head
Braking reaches full braking state, and meeting " safety regulations in coal mine " the 426th article of disk brake idle motion time must not exceed 0.3 second
Regulation.
The utility model has the advantages that due to using above-mentioned technology case, safety arrestment series redundancy two-stage brake hydraulic station of the invention
And its control method, solving two solenoid directional control valve parallel connections in the prior art, redundancy, two solenoid directional control valve series connection are not superfluous
Remaining problem.When safety arrestment of the present invention, a channel needs to be connected to be realized simultaneously using two solenoid directional control valves connection in parallel
Join redundancy conducting, a channel, which needs to block, realizes that series redundancy blocks using two concatenated solenoid directional control valve connections.Its is excellent
Point is: participating in all channels all redundancies of safety arrestment, i.e. the electromagnetic switch of two simultaneously operations is all arranged in all channels
Valve remains to complete this safety arrestment, while monitoring electricity if every channel has a solenoid directional control valve transposition failure occur
The fault alarm of magnetic reversal valve or locking are driven next time.Specific implementation is: (1) when safety arrestment, the ratio of B pipe brake and power-off
Example overflow valve, which needs to block, realizes that series redundancy blocks using two concatenated solenoid directional control valve connections, completes this safety arrestment
Function；Any one failure of two concatenated solenoid directional control valves, the correct solenoid directional control valve that replaced block, remain to complete this
Safety braking functions solve the problems, such as the not redundancy of two solenoid directional control valve parallel connections in the prior art.(2) A pipe brake and oil
Case, which needs to be connected, realizes parallel redundancy conducting using two solenoid directional control valve connections in parallel, completes this safety braking functions；
Any one failure of two solenoid directional control valves in parallel, by replacing, correct solenoid directional control valve is connected, and remains to complete this peace
Full application of brake function solves the problems, such as the not redundancy of two solenoid directional control valve series connection in the prior art.Its structure is simple, operation side
Just, using effect is good, has wide applicability.
Detailed description of the invention
Fig. 1 is safety arrestment series redundancy two-stage brake hydraulic station operation principle schematic diagram of the invention
In figure: oil pump-l, motor -2, proportional pressure control valve -3, overflow valve -4, one-way throttle valve -5, accumulator -6 monitor valve
Sensor -7, B pipe brake -8, A pipe brake -9 of position, solenoid directional control valve-G3, G33, G4, G44, G5, G55.
Specific embodiment
The invention will be further described for embodiment in reference to the accompanying drawing:
As shown in Figure 1, safety arrestment series redundancy two-stage brake hydraulic station of the invention, is overflow by oil pump 1, motor 2, ratio
Flow valve 3, overflow valve 4, one-way throttle valve 5, accumulator 6, sensor 7, B pipe brake 8, A pipe brake 9 and the electricity for monitoring valve position
Magnetic reversal valve is constituted.The proportional pressure control valve 3 connects oil pump 1, and the pipeline that the B pipe brake 8 connects oil pump 1 is equipped with
Two concatenated solenoid directional control valve G4, G44, B pipe brake 8, which connects, sets that there are two solenoid directional control valves in parallel on the pipeline of fuel tank
G5, G55, B pipe brake 8 are connect with the ante-chamber of accumulator 6 and overflow valve 4, and the back cavity of overflow valve 4 passes through two electromagnetism in parallel
Reversal valve G3, G33 and oil pump 1 and fuel tank connect；There are two being set on the pipeline that the A group damper brake 9 is communicated with oil pump 1 and fuel tank
Solenoid directional control valve G3, G33 in parallel；The sensor 7 of monitoring valve position is equipped on all solenoid directional control valves.
The control method of above-mentioned safety arrestment series redundancy two-stage brake hydraulic station, detailed process is as follows:
Hydraulic station provides the pressure oil of different oil pressure for brake, and the variation of oil pressure is adjusted by proportional pressure control valve 3；When mentioning
When rising machine system worked well, 6 solenoid directional control valves G3, G33, G4, G44, G5, G55 are all powered, by proportional pressure control valve (3)
The pressure oil of adjusting pass through respectively two right positions solenoid directional control valve G33, G3 in parallel and two concatenated solenoid directional control valve G44,
The right position G4 enters A pipe brake 9 and B pipe brake 8, and driver can realize oil pressure by adjusting the voltage of proportional pressure control valve 3
Variation, to achieve the purpose that regulating brake force square.3 voltage of proportional pressure control valve is gradually raised to operating voltage, and oil pressure gradually rises
To operating oil pressure, brake opens a sluice gate elevator normal operation；Meanwhile the pressure oil of operating oil pressure passes through in one-way throttle valve 5
Check valve enters accumulator 6, and the ante-chamber of overflow valve 4 and the pressure oil of back cavity are all operating oil pressure, and the spool of overflow valve 4, which is in, to close
Closed state；
When elevator system service braking, the input voltage of proportional pressure control valve 3 is gradually dropped to zero from operating voltage, accordingly
Oil pressure is gradually dropped to residual voltage, brake combined floodgate brake for elevator from operating oil pressure；
When elevator system breaks down, including full mine is powered off, exceeded the speed limit, reversing, elevator system realizes safety arrestment,
Motor 2 powers off, 1 fuel cut-off of oil pump, and proportional pressure control valve 3 powers off；Pressure oil in A pipe brake 9 is from two electromagnetism in parallel
Reversal valve G3, G33 are powered off change to left position oil return box simultaneously, and A pipe brake 9 is braked rapidly, and the safety arrestment is divided into two kinds
Different situations:
1) in the well when hoisting container, which is located at, to break down in well secondary safety brake: the pressure oil of B pipe brake 8 with
The residual voltage oil circuit of proportional pressure control valve 3 is powered off simultaneously by two concatenated solenoid directional control valve G4, G44 and changes to left position blocking, makes B control
Dynamic device 8 becomes closed circuit, and the back cavity of overflow valve 4 powers off simultaneously by two solenoid directional control valve G3, G33 in parallel changes to left position
Oil return box realizes level pressure overflow；The oil pressure for setting up overflow valve 4 at this time is the first order braking oil pressure of two stage braking, sets up delay
Time is less than 10 seconds, and during the delay process, accumulator 6 plays pressure stabilizing and repairing, by adjusting the section in one-way throttle valve 5
Stream valve openings of sizes adjusts its topping up of oil, and first order braking oil pressure value is basically unchanged, and realizes first order safety arrestment in well；Delay
Time terminates, and the pressure oil of B pipe brake 8 powers off simultaneously by two solenoid directional control valve G5, G55 in parallel changes to left position oil return
Case makes oil pressure drop to zero rapidly, realizes second level safety arrestment in well, reaches full braking state；
2) the well head level-one safety arrestment when hoisting container breaks down positioned at well head: should stop immediately, electromagnetic switch
Valve G4, G44 are still in energization on state, and the pressure oil of B pipe brake 8 enters ratio by the right bit stream of solenoid directional control valve G4, G44
3 oil return box of overflow valve, while being powered off simultaneously by two solenoid directional control valve G5, G55 in parallel and changing to left position oil return box, B control
The dynamic braking rapidly of device 8, realizes the safety arrestment of well head level-one, reaches full braking state, meet " safety regulations in coal mine " the 426th bar of disk
Formula brake idle motion time must not exceed 0.3 second regulation.
Working principle: when safety arrestment, a channel will be connected, and be realized with two solenoid directional control valve connections in parallel in parallel
Redundancy conducting, illustrates so that A pipe brake 9 and fuel tank will be connected as an example, is connected with two solenoid directional control valve G3, G33 in parallel, two
Solenoid directional control valve G3, G33 of a parallel connection are powered off change to left position oil return box simultaneously, and A pipe brake 9 is braked rapidly.Two in parallel
There is transposition failure in any one by solenoid directional control valve G3, G33, if solenoid directional control valve G3 occurs being stuck in the intermediate transposition event being not turned on
Barrier, pressure oil change to left position oil return box from the correct solenoid directional control valve G33 power-off that replaces, and A pipe brake 9 is braked rapidly, still complete
At this safety braking functions；If or there is being stuck in the intermediate transposition failure being not turned in solenoid directional control valve G33, pressure oil is from transposition
Left position oil return box is changed in correct solenoid directional control valve G3 power-off, and A pipe brake 9 is braked rapidly, still completes this safety arrestment function
Energy；The diagnosis of sensor 7 for monitoring valve position is driven next time to transposition fault alarm or locking.When safety arrestment, a channel will be led
Logical, realize parallel redundancy conducting also with two solenoid directional control valve connections in parallel: B pipe brake 8 and fuel tank will be connected, and use
Parallel redundancy conducting is realized in two solenoid directional control valve G5, G55 connections in parallel.
When safety arrestment, a channel will be blocked, and realize that series redundancy blocks with two concatenated solenoid directional control valve connections,
Specific implementation: when hoisting container is in well, the residual voltage oil circuit of B pipe brake 8 and proportional pressure control valve 3 will be blocked, and be gone here and there with two
Solenoid directional control valve G4, G44 of connection are connected, and two concatenated solenoid directional control valve G4, G44 are powered off simultaneously changes to left position blocking, manage B
Brake 8 becomes closed circuit.If two concatenated solenoid directional control valve G4, G44 any one there is transposition failure, example electromagnetic switch
Valve G44 occurs not changing to the transposition failure of left position, and the residual voltage oil circuit of B pipe brake 8 and proportional pressure control valve 3 is correctly electric by transposition
Left position blocking is changed in magnetic reversal valve G4 power-off, equally reaches the function of making B pipe brake 8 become closed circuit, realizes that series connection is superfluous
Remaining, the diagnosis of sensor 7 of monitoring valve position is driven next time to transposition fault alarm or locking.
In safety arrestment, share three channels: the residual voltage oil circuit of B pipe brake 8 and proportional pressure control valve 3 will be blocked, and be used
Series redundancy is realized in two concatenated solenoid directional control valve G4, G44 connections；B pipe brake 8 and fuel tank will be connected, with two parallel connections
Solenoid directional control valve G5, G55 connection realize parallel redundancy；A pipe brake 9 and fuel tank will be connected, and be changed with two electromagnetism in parallel
It is connected to valve G3, G33 and realizes parallel redundancy.Three channels all redundancies, if two electromagnetism of the movement that replaces simultaneously in every channel
Reversal valve has a valve transposition failure occur, remains to complete this safety arrestment, and the sensor of monitoring valve position, diagnosis has been arranged
To transposition failure, alarm or locking are driven next time.
Claims (2)
1. a kind of control method of safety arrestment series redundancy two-stage brake hydraulic station, using safety arrestment series redundancy two-stage system
Brake hydraulic station, safety arrestment series redundancy two-stage brake hydraulic station include oil pump (1), motor (2), proportional pressure control valve (3), overflow
Valve (4), one-way throttle valve (5), accumulator (6), monitor the sensor (7) of valve position, B pipe brake (8), A pipe brake (9) and
Solenoid directional control valve, it is characterised in that: the proportional pressure control valve (3) connects oil pump (1), and the B pipe brake (8) connects oil
It pumps and is set on the pipeline of (1) there are two concatenated solenoid directional control valve G4, G44, the pipeline of B pipe brake (8) connection fuel tank is equipped with
Two solenoid directional control valve G5, G55 in parallel, B pipe brake (8) are connect with the ante-chamber of accumulator (6) and overflow valve (4), overflow
The back cavity of valve (4) is connected by two solenoid directional control valve G3, G33 in parallel and oil pump (1) and fuel tank；The A pipe brake (9)
Solenoid directional control valve G3, G33 in parallel there are two being set on the pipeline communicated with oil pump (1) and fuel tank；On all solenoid directional control valves
It is equipped with the sensor (7) of monitoring valve position, it is characterised in that comprise the following processes:
When elevator system works normally, solenoid directional control valve G3, G33, G4, G44, G5, G55 are all powered, by proportional pressure control valve
(3) pressure oil adjusted passes through two right positions solenoid directional control valve G33, G3 in parallel and two concatenated solenoid directional control valves respectively
The right position G44, G4 enters A pipe brake (9) and B pipe brake (8), and proportional pressure control valve (3) voltage is gradually raised to operating voltage, oil
Pressure is gradually raised to operating oil pressure, and brake opens a sluice gate elevator normal operation；Meanwhile the pressure oil of operating oil pressure passes through one-way throttle
Check valve in valve (5) enters accumulator (6), and the ante-chamber of overflow valve (4) and the pressure oil of back cavity are all operating oil pressure, overflow valve
(4) spool is in close state；
When elevator system service braking, the input voltage of proportional pressure control valve (3) is gradually dropped to zero from operating voltage, corresponding oil
Pressure is gradually dropped to residual voltage, brake combined floodgate brake for elevator from operating oil pressure；
When elevator system breaks down, including full mine is powered off, exceeded the speed limit, reversing, elevator system realizes safety arrestment, motor
(2) it powers off, oil pump (1) fuel cut-off, proportional pressure control valve (3) power-off；Pressure oil in A pipe brake (9) is in parallel from two
Solenoid directional control valve G3, G33 are powered off change to left position oil return box simultaneously, and A pipe brake (9) is braked rapidly.
2. the control method of safety arrestment series redundancy two-stage brake hydraulic station according to claim 1, it is characterised in that:
The elevator system is divided into two kinds of different situations and realizes that safety arrestment is as follows:
1) in the well when hoisting container, which is located at, to break down in well secondary safety brake: the pressure oil of B pipe brake (8) with than
The residual voltage oil circuit of example overflow valve (3) is powered off simultaneously by two concatenated solenoid directional control valve G4, G44 and changes to left position blocking, makes B control
Dynamic device (8) become closed circuit, and the back cavity of overflow valve (4) powers off simultaneously by two solenoid directional control valve G3, G33 in parallel to be changed to
Left position oil return box realizes level pressure overflow；The oil pressure for setting up overflow valve (4) at this time is the first order braking oil pressure of two stage braking, is adjusted
Determining delay time is less than 10 seconds, and during the delay process, accumulator (6) plays pressure stabilizing and repairing, by adjusting one-way throttle
Throttle valve openings of sizes in valve (5) adjusts its topping up of oil, and first order braking oil pressure value is constant, realizes the first level security system in well
It is dynamic；Delay time terminates, and the pressure oil of B pipe brake (8) powers off simultaneously by two solenoid directional control valve G5, G55 in parallel to be changed
To left position oil return box, oil pressure is made to drop to zero rapidly, realizes second level safety arrestment in well, reach full braking state；
2) the well head level-one safety arrestment when hoisting container breaks down positioned at well head: should stop immediately, solenoid directional control valve G4,
G44 is still in energization on state, and the pressure oil of B pipe brake (8) enters ratio by the right bit stream of solenoid directional control valve G4, G44 and overflows
Valve (3) oil return box is flowed, while being powered off simultaneously by two solenoid directional control valve G5, G55 in parallel and changing to left position oil return box, B control
Dynamic device (8) are braked rapidly, are realized the safety arrestment of well head level-one, are reached full braking state, disk brake idle motion time is no more than
0.3 second.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810017111.1A CN108238561B (en) | 2018-01-09 | 2018-01-09 | Safety arrestment series redundancy two-stage brake hydraulic station and its control method |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201810017111.1A CN108238561B (en) | 2018-01-09 | 2018-01-09 | Safety arrestment series redundancy two-stage brake hydraulic station and its control method |
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| CN108238561A CN108238561A (en) | 2018-07-03 |
| CN108238561B true CN108238561B (en) | 2019-11-29 |
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| DE102018126964A1 (en) * | 2018-10-29 | 2020-05-14 | Pintsch Bubenzer Gmbh | BRAKE ARRANGEMENT FOR SECURING A CONVEYOR, CONVEYOR AND CRANE SYSTEM |
| CN110873096B (en) * | 2019-12-05 | 2022-02-11 | 河南永华能源有限公司 | Main well hydraulic station redundant loop transformation system |
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| CN206447437U (en) * | 2017-02-09 | 2017-08-29 | 洛阳智超机电科技有限公司 | A kind of mine hoist hydraulic station safety arrestment multiple redundancy and monitoring and diagnosis system |
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| CN201580876U (en) * | 2009-08-10 | 2010-09-15 | 上海冶金矿山机械厂 | Hydraulic station device for mine hoister |
| CN202492250U (en) * | 2012-02-22 | 2012-10-17 | 山东泰鼎矿山机械有限公司 | Cartridge valve hydraulic station for preventing blocking |
| CN102701103A (en) * | 2012-06-09 | 2012-10-03 | 太原理工大学 | Safety brake and redundancy control system of mine hoist |
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