CN108005968A - Emergency brake release system, control method and its hoisting system - Google Patents
Emergency brake release system, control method and its hoisting system Download PDFInfo
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- CN108005968A CN108005968A CN201711252237.9A CN201711252237A CN108005968A CN 108005968 A CN108005968 A CN 108005968A CN 201711252237 A CN201711252237 A CN 201711252237A CN 108005968 A CN108005968 A CN 108005968A
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- Prior art keywords
- emergent
- brake
- emergency brake
- valve
- oil
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B1/00—Installations or systems with accumulators; Supply reservoir or sump assemblies
- F15B1/02—Installations or systems with accumulators
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66D—CAPSTANS; WINCHES; TACKLES, e.g. PULLEY BLOCKS; HOISTS
- B66D5/00—Braking or detent devices characterised by application to lifting or hoisting gear, e.g. for controlling the lowering of loads
- B66D5/02—Crane, lift hoist, or winch brakes operating on drums, barrels, or ropes
- B66D5/24—Operating devices
- B66D5/26—Operating devices pneumatic or hydraulic
- B66D5/28—Operating devices pneumatic or hydraulic specially adapted for winding gear, e.g. in mining hoists
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B11/00—Servomotor systems without provision for follow-up action; Circuits therefor
- F15B11/08—Servomotor systems without provision for follow-up action; Circuits therefor with only one servomotor
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B13/00—Details of servomotor systems ; Valves for servomotor systems
- F15B13/02—Fluid distribution or supply devices characterised by their adaptation to the control of servomotors
- F15B13/04—Fluid distribution or supply devices characterised by their adaptation to the control of servomotors for use with a single servomotor
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B20/00—Safety arrangements for fluid actuator systems; Applications of safety devices in fluid actuator systems; Emergency measures for fluid actuator systems
- F15B20/002—Electrical failure
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- General Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Life Sciences & Earth Sciences (AREA)
- Environmental & Geological Engineering (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geology (AREA)
- Fluid-Pressure Circuits (AREA)
Abstract
The invention discloses a kind of emergency brake to discharge system, including battery, brake monitor and emergent liquid braking device；Battery provides power supply for emergent liquid braking device；Brake monitor issues the emergent liquid braking device work of control signal control, realizes that lifting mechanism discharges weight when power is off.Present invention also offers the control method of emergency brake release system, including system to start self-test；Start emergency brake release system；Emergent pump start；Brake is promptly opened a sluice gate；Velocity sensor detects lifting motor rotating speed and uploads brake monitor；Brake monitor control proportional pressure control valve ensures the rotating speed of lifting motor；If lifting motor rotating speed is more than threshold value, battery and the connection of emergency brake release system, brake are turned off.Present invention also offers the lifting mechanism that system and control method are discharged including emergency brake.The present invention can ensure lifting mechanism safely and fast controllable release weight in system cut-off, and simple in structure, securely and reliably.
Description
Technical field
It is an object of the invention to provide a kind of emergency brake release system, control method and its hoisting system.
Background technology
With the development and the improvement of people's living standards of national economy technology, electric energy has become the daily production of people
With essential secondary energy sources in life, production and life to people bring endless facility.
Lifting mechanism is the important auxiliary body in industrial production, and existing lifting mechanism uses electric hydraulic controlling party
Formula.Hydraulic brake is to apply a kind of device to brake in lifting mechanism, is subtracted in lifting mechanism course of normal operation
During speed parking, it is reliably achieved band-type brake and checks lifting mechanism；In the case where being in an emergency, can be checked with quick response, band-type brake
Rise mechanism；When lifting mechanism is stopped, hoisting mechanism can be checked with band-type brake, lifting mechanism is failure to actuate.
But when there is significant trouble, for example when lifting mechanism total system powers off, lifting mechanism will be embraced directly at this time
Extremely, lifted weight will hover in the air.For safety and the needs of maintenance, it is necessary in a short time discharge weight to ground or certain
A security platform.In existing technology, common method is by manually using pumping manually to system for brake fluid pressure station institute band
Dynamic oil cylinder pressurization, when the pressure in oil cylinder reaches certain value, oil cylinder piston starts to compress disc spring, brake shoe is applied to brake disc
On pressure reduce, be finally completed hands off process, weight be discharged into ground or security platform.But this method is uncontrollable
Formula, it is necessary to operation personnel possess proficiency skills, slowly repeatedly opening and closing lock；Careless slightly, weight will quickly drop, and cause weight
The damage of thing and miscellaneous equipment；And it is long the time required to this method, it is unsatisfactory for quickly repairing the demand of failure.
The content of the invention
It is an object of the present invention to provide one kind to ensure that lifting mechanism is safely and fast controllable in system cut-off
Release weight emergency brake release system.
The second object of the present invention is to provide a kind of control method of the emergency brake release system.
The third object of the present invention is to provide a kind of for including the emergency brake release system and control method
The system of liter.
This emergency brake release system provided by the invention, including battery, brake monitor and emergent liquid braking device；
The emergent liquid braking device of battery connection, for providing power supply in system cut-off for emergent liquid braking device；Brake monitor with
Emergent liquid braking device connection, for issuing the emergent liquid braking device work of control signal control, exists so as to fulfill lifting mechanism
Weight is discharged during power-off.
The emergency brake release system further includes management of charging and discharging device；Management of charging and discharging device is connected to battery with meeting an urgent need
Between liquid braking device, it is used for realization the charging and discharging process to battery and is managed.
The emergency brake release system further includes velocity sensor；Velocity sensor is used to sample the emergency brake
The rotating speed of lifting motor in the lifting mechanism that release system is controlled, and rotary speed information is uploaded into brake monitor.
The emergent liquid braking device, including fuel tank (1), main oil supply system and one-way cylinder (8), the main fuel feeding
System is connected between fuel tank and one-way cylinder, and the main oil supply system is driven to one-way cylinder fuel feeding from brake monitor
Open a sluice gate release movement, the one-way cylinder by closing lock spring control closure, the brake further include proportional pressure control valve and
Emergent oil supply system, the emergent oil supply system and main oil supply system are powered by different power supplies, the emergent fuel feeding
System one end is connected with fuel tank, one end is serially connected in oil between main oil supply system and one-way cylinder by two-position three way magnetic valve
Lu Shang, the proportional pressure control valve are attempted by the oil circuit between emergent oil supply system and two-position three way magnetic valve, the emergent confession
Oil system is driven from brake monitor and carries out opening a sluice gate release movement to one-way cylinder fuel feeding when main oil supply system is powered off, described
Proportional pressure control valve from brake monitor adjustment control meet an urgent need oil supply system to one-way cylinder stablize fuel feeding；The one-way cylinder
Connect lifting mechanism brake, for control brake open a sluice gate and band-type brake.
The main oil supply system include main oil pump (2), main motor (3), two solenoid directional control valves (4,5), two pressure after
Electric appliance (6,7) and accumulator (9), the emergent oil supply system include emergent oil pump (11) and emergent motor (12), the main electricity
Machine and emergent motor are powered by different power supplies, and the main motor driving main oil pump extracts the oil in fuel tank, main oil
The oil circuit of pump is connected by the first solenoid directional control valve, two-position three way magnetic valve and one-way cylinder, the second solenoid directional control valve and the
Two pressure switches are attempted by the oil circuit between the first solenoid directional control valve and two-position three way magnetic valve, first pressure relay
And accumulator is attempted by the oil circuit between main oil pump and the first solenoid directional control valve；The emergent motor driving emergency oil pumping
The oil in fuel tank is taken, the oil circuit of emergent oil pump is connected with two-position three way magnetic valve, and proportional pressure control valve is attempted by emergent oil pump and two
On oil circuit between position-3-way solenoid valve；The brake monitor control the operating of each motor, the electromagnet of solenoid valve obtain it is electric or
Dead electricity.
On oil circuit between first solenoid directional control valve and two-position three way magnetic valve and be connected to one manually pump (14).
Filter (15) is mounted at the main oil pump, emergent oil pump and the inlet port that pumps manually.
Check valve is mounted in the main oil pump, emergent oil pump and the oil outlet that pumps manually.
Between the main oil pump and check valve, emergent and it is connected to overflow valve between oil pump and check valve.
And pressure is connected between the check valve and the first solenoid directional control valve, between check valve and two-position three way magnetic valve
Power table.
The one-way cylinder is equipped with amount of spring compression detector (18), which closes for monitoring
The decrement of lock spring simultaneously sends the signal for adjusting proportional pressure control valve to brake monitor.
Present invention also offers the control method of emergency brake release system, include the following steps：
S1. system starts simultaneously self-test；
S2. when lifting mechanism power supply powers off, emergency brake release system is started；
S3. when emergency brake release system starts, electric motor starting of meeting an urgent need, so that emergent operation of oil pump, is single-acting oil
The rod chamber oiling of cylinder；
S4. in the rod chamber of one-way cylinder pressure rise until the brake of lifting mechanism is promptly opened a sluice gate；
S5. velocity sensor detects the lifting motor rotating speed of lifting mechanism in real time, and the rotary speed information detected is uploaded
Brake monitor；
S6. brake monitor issues control instruction to proportional pressure control valve, passes through according to the lifting motor rotary speed information of upload
The operating pressure of proportional pressure control valve is controlled, ensures the rotary speed working of lifting motor in the range of speeds of setting；
S7. if brake monitor detects that lifting motor rotating speed is more than the threshold value of setting, brake monitor issues control
Management of charging and discharging device is instructed, management of charging and discharging device turns off battery and the connection of emergency brake release system, at this time raising
The brake of mechanism, so as to ensure the safety of lifting mechanism.
Present invention also offers a kind of hoisting system, the hoisting system include described emergency brake release system and its
Control method.
This emergency brake release system and its control method provided by the invention, by increasing a set of power supply, answering
Urgent telegram machine and emergent oil pump, it is using two-position three way magnetic valve that existing oil feed line and emergent oil feed line is oily with single-acting respectively
Cylinder connects, and when main power source powers off, when one-way cylinder switching-off action can not continue, user can voluntarily start increased power supply and supply
Electricity, continues fuel feeding pressurize to one-way cylinder by two-position three way magnetic valve from emergent oil pump and opens a sluice gate, it is ensured that complete machine workflow
It is smooth；By between oil pump and two-position three way magnetic valve and connecing a proportional pressure control valve emergent, by comparative example overflow valve when
When adjust, make from emergent oil pump flow into one-way cylinder oil pressure be effectively controlled, can effectively realize that slow floating formula is opened a sluice gate,
Ensure that the stabilization for opening a sluice gate work continues；Finally, the configuration of the present invention is simple, can be true in normally closed brake main motor powering-off state
Protect it is continuous and stable open a sluice gate, can ensure lifting mechanism safely and fast controllable release weight in system cut-off, reduce
The occurrence probability of accident.
Brief description of the drawings
Fig. 1 is that the emergency brake of the present invention discharges the functional block diagram of system.
Fig. 2 is the hydraulic principle schematic diagram of the emergent liquid braking device of the present invention.
Fig. 3 is principle schematic of the emergent liquid braking device of the present invention in energy storage pressurize.
Fig. 4 is principle schematic of the emergent liquid braking device of the present invention when normally opening a sluice gate.
Fig. 5 is principle schematic of the emergent liquid braking device of the present invention in emergent open a sluice gate.
Fig. 6 is the flow chart of the control method of the present invention.
Embodiment
As shown in Figure 1 the functional block diagram of system is discharged for the emergency brake of the present invention：It is provided by the invention this emergent
Brake release system, including battery, brake monitor, emergent liquid braking device, management of charging and discharging device and velocity sensor；Battery
The emergent liquid braking device of connection, for providing power supply in system cut-off for emergent liquid braking device；Brake monitor is with meeting an urgent need
Liquid braking device connects, and for issuing the emergent liquid braking device work of control signal control, is being powered off so as to fulfill lifting mechanism
When discharge weight；Management of charging and discharging device is connected between battery and emergent liquid braking device, be used for realization charging to battery and
Discharge process is managed；Velocity sensor is used to sample raising in the lifting mechanism that the emergency brake release system is controlled
The rotating speed of motor, and rotary speed information is uploaded into brake monitor.
It is illustrated in figure 2 the hydraulic principle schematic diagram of the emergent liquid braking device of the present invention：The mark shown in figure and institute
Corresponding component name is：1st, fuel tank；2nd, main oil pump；3rd, main motor；4th, 5 respectively the first solenoid directional control valve, the second electromagnetism change
To valve；6th, 7 be respectively first pressure relay, second pressure relay；8th, one-way cylinder；9th, accumulator；10th, two-position three way
Solenoid valve；11st, emergent oil pump；12nd, emergent motor；13rd, proportional pressure control valve；14th, pump manually；15th, filter；16th, overflow valve；
17th, pressure gauge；18th, amount of spring compression detector；81st, lock spring is closed
The liquid braking device figure it is seen that this new type of safe of the present invention is met an urgent need, including fuel tank 1, main oil supply system,
One-way cylinder 8, two-position three way magnetic valve 10, emergent oil supply system, proportional pressure control valve 13, amount of spring compression detector 18 and system
Movement controller, wherein, main oil supply system includes main oil pump 2, main motor 3, the first normally opened solenoid directional control valve 4, normally opened second
Solenoid directional control valve 5, first pressure relay 6, second pressure relay 7 and accumulator 9, oil supply system of meeting an urgent need include emergent oil pump
11 and emergent motor 12, be provided with the rodless cavity of one-way cylinder 8 for close clamp close lock spring 81；
Wherein, the inlet port of main oil pump 2 and emergent oil pump 11 is connected with fuel tank 1；Main motor 3 and emergent motor 12 be not by
Same power supply power supply；Main motor 3 is electrically connected with main oil pump 2, for driving main oil pump 2 to extract the oil in fuel tank 1；Emergent motor 12
It is electrically connected with emergent oil pump 11, for driving emergent oil pump 11 to extract the oil in fuel tank 1；The oil circuit of 2 oil outlet of main oil pump passes through
Respectively with A mouths, first pressure relay 6 and the accumulator 9 of the first solenoid directional control valve 4 and connecing, the first electromagnetism changes one check valve
To B mouths oil circuit the A mouths with the second solenoid directional control valve 5, the A mouths of two-position three way magnetic valve 10 and the second pressure relay respectively of valve 4
Device 7 simultaneously connects, and the B mouths of the second solenoid directional control valve 5 are connected with fuel tank 1；The oil circuit of 11 oil outlet of emergent oil pump passes through a check valve
It is connected respectively with the B of proportional pressure control valve 13 and two-position three way magnetic valve 10 mouths, C mouths and the single-acting oil of two-position three way magnetic valve 10
The rod chamber of cylinder 8 is connected；First pressure relay 6 is used to monitor the real-time oil pressure of accumulator 9 and is sent instead to brake monitor
Feedback signal, second pressure relay 7 are used to monitor the real-time oil pressure for flowing into one-way cylinder 8 and send feedback to brake monitor
Signal, amount of spring compression detector 18, which is installed on, is used to monitoring the decrement of closing lock spring 81 and to control on one-way cylinder 8
Device sends the signal for adjusting proportional pressure control valve 13, brake monitor control the operating of each motor, the electromagnet of solenoid valve obtain it is electric or
Dead electricity.
Figure it is seen that the emergent liquid braking device of the present invention further includes pump 14, some filters 15, some manually
Overflow valve and some pressure gauges, the inlet port of manual pump 14 are connected with fuel tank 1, and the oil circuit for pumping 14 oil outlets manually passes through one
Oil communication between the A mouths of the B mouths and the second solenoid directional control valve 5 of check valve and the first solenoid directional control valve 4；Filter 15 is distinguished
At the inlet port of main oil pump 2, emergent oil pump 11 and manual pump 14, for filtering hydraulic oil, ensure to enter whole brake
The cleannes of device hydraulic oil；The import oil circuit of overflow valve 16 is attempted by between main oil pump 2 and check valve, emergent oil pump 11 with it is unidirectional
On oil circuit between valve, the outlet oil circuit of overflow valve 16 is connected with fuel tank 1；Pressure gauge 18 is attempted by check valve and is changed with the first electromagnetism
To on the oil circuit between the A mouths of valve 4, between the B mouths of check valve and two-position three way magnetic valve 10.
Action process of the present invention is as follows：
1st, as shown in figure 3, the present invention is during just normally closed lock, main motor 3 starts, and brake monitor controls the first electromagnetism
The electromagnet of reversal valve 4 obtains electric, disconnects its A mouthfuls and B mouthful, and main oil pump 2 is to 9 fuel feeding of accumulator；When reaching first pressure relay
During the operating pressure that device 6 is set, first pressure relay 6 sends signal, and brake monitor control main motor 3 shuts down, makes
Dynamic brake is in energy storage packing state.
2nd, as shown in figure 4, during normal open a sluice gate, brake monitor controls the electromagnet of the first solenoid directional control valve 4 to lose
Electricity, the electromagnet of the second solenoid directional control valve 5 obtain electric, two-position three way magnetic valve 10 electromagnet dead electricity, the second solenoid directional control valve 5
A mouthfuls and B mouthfuls disconnections, close the rod chamber of one-way cylinder 8 and the path of fuel tank 1；Meanwhile first solenoid directional control valve 4 A mouths and
B mouthfuls of connections, the A mouths of two-position three way magnetic valve 10 are connected with C mouthfuls, and high pressure liquid pressure oil flows to having for one-way cylinder 8 from accumulator 9
Rod cavity, brake quickly perform and open a sluice gate release movement, and second pressure relay 7, which is sent, opens a sluice gate signal to custom system；From accumulation of energy
When the hydraulic fluid pressure that device 9 flows to the rod chamber of one-way cylinder 8 is reduced to the operating pressure of the setting of second pressure relay 7,
Second pressure relay 7 sends signal, and brake monitor control main motor 3, which voluntarily operates, carries out ftercompction.
3rd, as shown in figure 5, during while powering off suddenly (such as system) is promptly opened a sluice gate, main motor 3 powers off, control for brake
The emergent motor 12 of device control starts, the electromagnet of two-position three way magnetic valve 10 obtain it is electric, B mouths of two-position three way magnetic valve 10 with C mouthfuls
Connection, the operating pressure set according to proportional pressure control valve 13, rod chamber fuel feeding pressurize of the oil pump 11 to one-way cylinder 8 of meeting an urgent need,
Ensure that the urgent of brake is opened a sluice gate；During opening a sluice gate to release braking, amount of spring compression detector 18 constantly monitors and closes lock bullet
The data sending that this is monitored simultaneously is passed through amount of spring compression detector by the decrement of spring 81 to brake monitor, brake monitor
18 data monitored constantly adjust the operating pressure of proportional pressure control valve 13, it is ensured that the emergent dynamics and stabilization opened a sluice gate.
The control method of the emergency brake release system provided by the invention is illustrated in figure 6, is included the following steps：
S1. system starts simultaneously self-test；
S2. when lifting mechanism power supply powers off, emergency brake release system is started；
S3. when emergency brake release system starts, electric motor starting of meeting an urgent need, so that emergent operation of oil pump, is single-acting oil
The rod chamber oiling of cylinder；
S4. in the rod chamber of one-way cylinder pressure rise until the brake of lifting mechanism is promptly opened a sluice gate；
S5. velocity sensor detects the lifting motor rotating speed of lifting mechanism in real time, and the rotary speed information detected is uploaded
Brake monitor；
S6. brake monitor issues control instruction to proportional pressure control valve, passes through according to the lifting motor rotary speed information of upload
The operating pressure of proportional pressure control valve is controlled, ensures the rotary speed working of lifting motor in the range of speeds of setting；
S7. if brake monitor detects that lifting motor rotating speed is more than the threshold value of setting, brake monitor issues control
Management of charging and discharging device is instructed, management of charging and discharging device turns off battery and the connection of emergency brake release system, at this time raising
The brake of mechanism, so as to ensure the safety of lifting mechanism.
This emergency brake release system and its control method provided by the invention, are risen available for other any need
The equipment for rising operation, including bridge crane, gantry crane, gate hoist, gantry crane crane, mine hoist, metallurgy
Crane, container crane, claw bucket sling, rubbish are hung, electromagnetic lifter, derrick crane, hoist engine, belt tension machine and drilling well elevator
Deng.
Claims (10)
1. a kind of emergency brake discharges system, it is characterised in that including battery, brake monitor and emergent liquid braking device；Battery
The emergent liquid braking device of connection, for providing power supply in system cut-off for emergent liquid braking device；Brake monitor is with meeting an urgent need
Liquid braking device connects, and for issuing the emergent liquid braking device work of control signal control, is being powered off so as to fulfill lifting mechanism
When discharge weight.
2. emergency brake according to claim 1 discharges system, it is characterised in that further includes management of charging and discharging device；Discharge and recharge
Manager is connected between battery and emergent liquid braking device, is used for realization the charging and discharging process to battery and is managed.
3. emergency brake according to claim 1 discharges system, it is characterised in that further includes velocity sensor；Velocity pick-up
Device is used for the rotating speed for sampling lifting motor in the lifting mechanism that the emergency brake release system is controlled, and by rotary speed information
Pass brake monitor.
4. the emergency brake release system according to one of claims 1 to 3, it is characterised in that the emergent hydraulic braking
Device, including fuel tank (1), main oil supply system and one-way cylinder (8), the main oil supply system are connected to fuel tank and one-way cylinder
Between, the main oil supply system is driven from brake monitor and carries out opening a sluice gate release movement, the nonoculture to one-way cylinder fuel feeding
Proportional pressure control valve and emergent oil supply system are further included by closing lock spring control closure, the brake with oil cylinder, the emergent fuel feeding system
System and main oil supply system are powered by different power supplies, and described emergent oil supply system one end is connected with fuel tank, one end leads to
Cross two-position three way magnetic valve to be serially connected on the oil circuit between main oil supply system and one-way cylinder, the proportional pressure control valve is attempted by
On emergent oil circuit between oil supply system and two-position three way magnetic valve, the emergent oil supply system is driven in master by brake monitor
Oil supply system carries out opening a sluice gate release movement when powering off to one-way cylinder fuel feeding, and the proportional pressure control valve is adjusted by brake monitor
The emergent oil supply system of control stablizes fuel feeding to one-way cylinder；The brake of the one-way cylinder connection lifting mechanism, is used for
Control brake open a sluice gate and band-type brake.
5. emergency brake according to claim 4 discharges system, it is characterised in that the main oil supply system includes main oil pump
(2), main motor (3), two solenoid directional control valves (4,5), two pressure switches (6,7) and accumulator (9), the emergent fuel feeding
System includes emergent oil pump (11) and emergent motor (12), the main motor and emergent motor and is supplied by different power supplies
Electricity, the main motor driving main oil pump extract the oil in fuel tank, and the oil circuit of main oil pump passes through the first solenoid directional control valve, two-position three way
Solenoid valve is connected with one-way cylinder, the second solenoid directional control valve and second pressure relay be attempted by the first solenoid directional control valve with
On oil circuit between two-position three way magnetic valve, first pressure relay and accumulator are attempted by main oil pump and the first electromagnetic switch
On oil circuit between valve；The emergent motor driving emergency oil pumping takes the oil in fuel tank, the oil circuit for oil pump of meeting an urgent need and two three
Three-way electromagnetic valve connects, and proportional pressure control valve is attempted by the oil circuit between emergent oil pump and two-position three way magnetic valve；The braking control
Device processed controls the operating of each motor, the electromagnet of solenoid valve to obtain electric or dead electricity.
6. emergency brake according to claim 5 discharges system, it is characterised in that first solenoid directional control valve and two
On oil circuit between three-way magnetic valve and be connected to one manually pump (14).
7. emergency brake according to claim 5 discharges system, it is characterised in that between the main oil pump and check valve, answers
And overflow valve is connected between anxious oil pump and check valve.
8. emergency brake according to claim 5 discharges system, it is characterised in that the one-way cylinder is equipped with spring
Decrement detector (18), the amount of spring compression detector are used to monitor the decrement for closing lock spring and are sent to brake monitor
Adjust the signal of proportional pressure control valve.
9. the control method of the emergency brake release system described in a kind of one of claim 1~8, includes the following steps：
S1. system starts simultaneously self-test；
S2. when lifting mechanism power supply powers off, emergency brake release system is started；
S3. when emergency brake release system starts, electric motor starting of meeting an urgent need, so that emergent operation of oil pump, is one-way cylinder
Rod chamber oiling；
S4. in the rod chamber of one-way cylinder pressure rise until the brake of lifting mechanism is promptly opened a sluice gate；
S5. velocity sensor detects the lifting motor rotating speed of lifting mechanism in real time, and the rotary speed information detected is uploaded and is braked
Controller；
S6. brake monitor issues control instruction to proportional pressure control valve, passes through control according to the lifting motor rotary speed information of upload
The operating pressure of proportional pressure control valve, ensures the rotary speed working of lifting motor in the range of speeds of setting；
S7. if brake monitor detects that lifting motor rotating speed is more than the threshold value of setting, brake monitor issues control instruction
To management of charging and discharging device, management of charging and discharging device turns off battery and the connection of emergency brake release system, at this time lifting mechanism
Brake, so as to ensure the safety of lifting mechanism.
10. a kind of hoisting system, it is characterised in that discharge system, and power including the emergency brake described in one of claim 1~8
Profit requires the control method described in 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711252237.9A CN108005968B (en) | 2017-12-01 | 2017-12-01 | Emergency brake release system, control method and lifting system thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711252237.9A CN108005968B (en) | 2017-12-01 | 2017-12-01 | Emergency brake release system, control method and lifting system thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108005968A true CN108005968A (en) | 2018-05-08 |
| CN108005968B CN108005968B (en) | 2023-09-15 |
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ID=62056128
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711252237.9A Active CN108005968B (en) | 2017-12-01 | 2017-12-01 | Emergency brake release system, control method and lifting system thereof |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112503059A (en) * | 2020-05-09 | 2021-03-16 | 上海乾瑞科技有限公司 | Pipeless wireless full-automatic integrated intelligent steel support system and method |
| CN115535903A (en) * | 2022-08-25 | 2022-12-30 | 杭州大杰智能传动科技有限公司 | Braking system, safety braking tower crane hoisting mechanism and braking method |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20040050042A1 (en) * | 2000-11-28 | 2004-03-18 | Frazer Hugh Ivo | Emergercy energy release for hydraulic energy storage systems |
| CN102050202A (en) * | 2010-11-11 | 2011-05-11 | 武汉船用机械有限责任公司 | Shark pincers with emergent release function |
| CN206360940U (en) * | 2016-12-20 | 2017-07-28 | 北京中冶迈克液压有限责任公司 | One kind is coaling vehicle hydraulic system |
| CN207660911U (en) * | 2017-12-01 | 2018-07-27 | 江西工埠机械有限责任公司 | Emergency brake discharges system and its hoisting system |
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| US20040050042A1 (en) * | 2000-11-28 | 2004-03-18 | Frazer Hugh Ivo | Emergercy energy release for hydraulic energy storage systems |
| CN102050202A (en) * | 2010-11-11 | 2011-05-11 | 武汉船用机械有限责任公司 | Shark pincers with emergent release function |
| CN206360940U (en) * | 2016-12-20 | 2017-07-28 | 北京中冶迈克液压有限责任公司 | One kind is coaling vehicle hydraulic system |
| CN207660911U (en) * | 2017-12-01 | 2018-07-27 | 江西工埠机械有限责任公司 | Emergency brake discharges system and its hoisting system |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN112503059A (en) * | 2020-05-09 | 2021-03-16 | 上海乾瑞科技有限公司 | Pipeless wireless full-automatic integrated intelligent steel support system and method |
| CN115535903A (en) * | 2022-08-25 | 2022-12-30 | 杭州大杰智能传动科技有限公司 | Braking system, safety braking tower crane hoisting mechanism and braking method |
| CN115535903B (en) * | 2022-08-25 | 2024-05-14 | 杭州大杰智能传动科技有限公司 | Braking system, tower crane lifting mechanism for safety braking and braking method |
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| CN108005968B (en) | 2023-09-15 |
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