CN107555343A - A kind of mine hoist torque-controllable sure brake system and braking method - Google Patents
A kind of mine hoist torque-controllable sure brake system and braking method Download PDFInfo
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- CN107555343A CN107555343A CN201710770093.XA CN201710770093A CN107555343A CN 107555343 A CN107555343 A CN 107555343A CN 201710770093 A CN201710770093 A CN 201710770093A CN 107555343 A CN107555343 A CN 107555343A
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- 238000004146 energy storage Methods 0.000 claims description 10
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- 238000002347 injection Methods 0.000 claims description 7
- 239000007924 injection Substances 0.000 claims description 7
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Abstract
A kind of mine hoist torque-controllable sure brake system and braking method, including reel, hydraulic station, electric control gear and detection feedback device, reel is provided with brake disc, brake disc both sides are provided with disc-brake, a kind of mine hoist torque-controllable sure brake system and braking method of the present invention, avoid the change of prior art braking deceleration greatly, braking impact is big, braking procedure is unstable, and brake safe reliability owes excellent deficiency.Braking stationarity and security reliability is improved, system is reached higher security reliability and Technical Economy.Security reliability to improving mine throat equipment, it is significant to improve production efficiency.
Description
Technical field
It is controllable more particularly to a kind of mine hoist the present invention relates to mine hoist safely braking control technical field
Torque sure brake system and braking method.
Background technology
Mine hoist is the throat equipment of mining, carries mineral, equipment, material and personnel between underground
The vital task of conveying, its performance quality are particularly significant for Mine Safety in Production；And mine hoisting brake system is relation
To the critical component of mine hoist safety performance.
Safety arrestment refers in elevator or hoisting gear running, stops rapidly during to avoid the occurrence of security incident
Braking action；Safety arrestment process is mainly to be completed by brakes.
At present, most of mine hoist and hoisting gear still use and set up definite value constant moment of force secondary safety control for brake side
Formula, its first order braking oil pressure only have only one setting value.So-called constant moment of force secondary safety brake control mode（Abbreviation two level
Braking）, just refer in safety arrestment, by whole braking moments with different numerical value be divided to two deboost phases be applied to elevator or
On the drum brake disc of hoisting gear；Wherein, first order deboost phase applying portion braking moment, to meet braking deceleration
It is required that and keep braking oil pressure（That is braking moment）It is constant until parking；Then whole brake force are applied when the second level is braked
Square, to ensure stably stop.Main purpose using this mode of braking be in order to solve safety arrestment during, for system
Braking moment needed for the requirement of dynamic deceleration size during inactive state for braking moment needed for parking reliability requirement with differing
The contradiction of cause, it is allowed to meet the relevant safety code requirement of country, to realize that lifting system securely and reliably works.Due to different loads
The safety arrestment torque that lotus, speed and drive manner need is different, in actual applications, this most severe work only with heavy-load lowering
Condition sets braking moment to meet that heavy duty above carries the braking needs with heavy-load lowering etc. under different operating modes.But because weight above puies forward work
Under condition, gravity load direction is to aid in lifting system braking, completes braking moment needed for braking procedure and reduces, therefore, and again
Decentralization operating mode is carried to compare, braking deceleration is excessive, steel wire rope overload accident caused by slack rope easily occurs, especially for
Inclined shaft hoisting is particularly evident.Abseiling accident is then also easy to produce for multi-rope friction hoisting machine, in lifting system load change situation
Under there is also it is same the problem of.
As can be seen here, it is above-mentioned to set up that definite value constant moment of force mode of braking fully meet mine hoist and hoisting gear exists
Under whole operating modes, safety arrestment needs when particularly heavy-load lowering and heavy duty above put forward two kinds of extremity operating modes.It is i.e. existing
Constant-moment secondary braking mode, for being only capable of braking by the braking moment set under different operating modes, it is impossible to which reply carries
Rise the situation of airborne lotus direction change；For large-scale multirope winding plant, it is easy to break through during safety arrestment and slides pole
Limit, causes steel wire iope slippage；Easily occur steel wire rope overload accident caused by slack rope for inclined shaft hoisting, reduce equipment
Security performance and service life, or even cause serious accident and casualties.
The content of the invention
To solve deficiency existing for above-mentioned background technology, this hair provides a kind of mine hoist torque-controllable safety arrestment system
System and braking method.
The technical solution adopted for the present invention to solve the technical problems：
A kind of mine hoist torque-controllable sure brake system, including reel, hydraulic station, electric control gear and detection feedback dress
Put, reel is provided with brake disc, and brake disc both sides are provided with disc-brake；
The hydraulic station includes energy storage device, electricity liquid ratio relief valve, the first inserting component, the second inserting component and electromagnetic switch
Valve, the arrival end of the electricity liquid ratio relief valve connect energy storage device, the entrance of electricity liquid ratio relief valve by one-way throttle valve
Pumping source, electric-hydraulic proportion are accessed in end after being connected respectively with the first inserting component, the second inserting component and solenoid directional control valve by pipeline
The arrival end of overflow valve is also connected by the oil cylinder of stop valve and disc-brake.
The detection feedback device includes the tachogenerator being arranged on reel and electricity liquid ratio relief valve and dish type system
Pressure sensor between the oil cylinder of dynamic device.
The tachogenerator gathers elevator deceleration signal and inputs electric control gear, and electric control gear receives deceleration letter
Number and control instruction is sent compared with given velocity amplitude, the control instruction is sent to electric-hydraulic proportion after Electric signal processing
Electric signal control instruction is converted to hydraulic pressure signal and exported by input electrical signal control instruction by overflow valve, electricity liquid ratio relief valve
The hydraulic pressure signal control disc-brake of change, forms velocity close-loop control loop.
The fuel injection pressure signal collected is fed back to electricity liquid ratio relief valve by the pressure sensor after electric control gear is handled,
Form pressure closed loop control loop.
A kind of braking method of mine hoist torque-controllable sure brake system, comprises the following steps：
A, need to set given speed value in electric control gear according to mine hoist safety arrestment requirement and lifting system；
B, set pressure sensor in systems that the fuel injection pressure signal collected is fed back into electricity liquid ratio relief valve, form pressure
Close loop control circuit；
The Hoist Speed signal collected is fed back to electric control gear, electric control gear by velocity sensor C, being arranged on reel
By the rate signal compared with given velocity amplitude after send control instruction, the control instruction is through Electric signal processing
Afterwards, then after the oil pressure pressure signal with being sent from pressure sensor electric signal control instruction, electric signal control instruction are sent
After the modes such as amplified, correction are handled, hydraulic pressure signal is converted to through electricity liquid ratio relief valve, electricity liquid ratio relief valve output is by defeated
The hydraulic pressure signal control disc-brake 3 for entering the change of electric signal control instruction forms velocity close-loop control loop, i.e., electro-hydraulic
The hydraulic pressure signal that the output of proportional pressure control valve changes according to input electrical signal control instruction controls disc-brake oil cylinder
The power of piston rod output；
D, the remaining force after the power of disc-brake cylinder piston rod output is offset with disc-brake spring force passes through lock
Watt and brake disc act on brake disc brake disc, the motion state of the braking moment of formation control lifting system is according to input telecommunications
The changing rule of number control instruction and braking deceleration, implement the control to lifting system.
Due to using technical scheme as described above, the present invention has following superiority：
A kind of mine hoist torque-controllable sure brake system and braking method of the present invention, avoid prior art system
Greatly, braking impact is big, and braking procedure is unstable, and brake safe reliability owes excellent deficiency for dynamic deceleration change.Improve braking
Stationarity and security reliability, system is set to reach higher security reliability and Technical Economy.To improving mine throat equipment
Security reliability, improve production efficiency it is significant.
Brief description of the drawings
Fig. 1 is the hydraulic circuit schematic diagram of the present invention；
Fig. 2 is the braking method flow chart of the present invention；
In accompanying drawing：1st, reel；2nd, brake disc；3rd, disc-brake；4th, stop valve；5th, pressure sensor；6th, accumulator；7th, it is unidirectional
Choke valve；8th, electricity liquid ratio relief valve；9th, the first inserting valve module；10th, the second inserting valve module；11st, solenoid directional control valve.
Embodiment
The present invention can be explained in more detail by the following examples, the open purpose of the present invention is intended to the protection present invention
In the range of all changes and improvements, the invention is not limited in the following examples：
The mine hoist torque-controllable sure brake system of the present invention, including the disc braking being arranged on drum brake disc 2
Device 3, hydraulic station, electric control gear and detection feedback device；
The hydraulic station of the system includes energy storage device 6, and the electric signal of input is converted to corresponding hydraulic flow pressure by one
Electricity liquid ratio relief valve 8, in addition to the inserting component 9,10 and electromagnetism of control system media flow direction and pressure loading unloading
Reversal valve 11；Hydraulic system is connected to the oil cylinder of disc-brake 3 by fluid pressure line.
The detection feedback device of the system includes the tachogenerator being arranged on reel 1；
The tachogenerator gathers elevator deceleration signal and inputs electric control gear, and electric control gear receives the deceleration letter
Number and control instruction is sent compared with given velocity amplitude, the control instruction is through Electric signal processing, electric-hydraulic proportion overflow
Electric signal control instruction is converted to hydraulic pressure signal and exports the hydraulic pressure signal changed by input electrical signal control instruction by valve 8
Disc-brake 3 is controlled to form velocity close-loop control loop.
The detection feedback device also includes being arranged between the oil cylinder of electricity liquid ratio relief valve 8 and disc-brake 3
The fuel injection pressure signal collected is fed back to electric-hydraulic proportion after electric control gear is handled and overflow by pressure sensor 5, the pressure sensor 5
Valve 8 is flowed, forms pressure closed loop control loop.
The entrance termination energy storage device 6 of the electricity liquid ratio relief valve 8 of the hydraulic station, energy storage device passes through with hydraulic pump source
The associated of one-way throttle valve 7 simultaneously obtains pressure oil supplement, and one-way throttle valve 7 allows fluid to be flowed towards the direction of energy storage device,
When requiring supplementation with pressure oil during safety arrestment, by choke valve to system flow.
In braking with high safety, brakes of the invention can be realized in different loads, friction speed and different works
Under condition, lifting system is set to be braked according to given speed.Detect that actual speed deviates set-point in detection feedback device
In the case of, feedback regulation and compensating action by electro-hydraulic closed loop brake control system, it is reduced deviation rapidly, reach to
Fixed speed simultaneously keeps constant until parking, so as to realize the braking effect of torque-controllable mode of braking.
As shown in figure 1, wherein energy storage device-accumulator 6 of hydraulic station, electricity liquid ratio relief valve 8, solenoid directional control valve
11 connect to form hydraulic circuit with inserting component, are connected to disc-brake 3 by stop valve 4, are specifically connected to disc braking
The oil cylinder of device；Accumulator 6 is connected to pumping source through one-way throttle valve 7, and one-way throttle valve 7 allows fluid towards energy storage device
Flow when safety arrestment needs repairing to system flow in 6 direction.Wherein electricity liquid ratio relief valve 8 is that electro-hydraulic conversion is put
Big element, the electric signal control instruction of consecutive variations is inputted, export the hydraulic power oil stream of servo-actuated change；The conduct of accumulator 6
The standby oil sources of system, control pressure oil is provided for brake fluid system when safety arrestment includes having a power failure；Insert component 9,10
System pressure unloads during with solenoid directional control valve 11 to control the break-make of hydraulic power oil stream flow path and brake hard
Carry;For cutting off oil stream between hydraulic station and disc-brake 3 when stop valve 4 is maintenance；Disc-brake 3 is
As the hydraulic pressure and power conversion device of whole system, and braking executive component；The piston rod machine of the oil cylinder of disc-brake 3
Tool connects brake disc 2, and brake disc is close to friction with reel wheel hub in the presence of the oil cylinder of disc-brake 3 and produces brake force.
With reference to shown in accompanying drawing 2, set pressure sensor 5 in systems that the fuel injection pressure signal collected is fed back into electro-hydraulic ratio
Example overflow valve 8, forms pressure closed loop control loop；The Hoist Speed that the velocity sensor being arranged on reel 1 will collect
Signal feeds back to electric control gear, electric control gear by the rate signal compared with given velocity amplitude after send control and refer to
Order, the control instruction send electricity after Electric signal processing, then after the oil pressure pressure signal with being sent from pressure sensor
After the mode such as signal control instruction, electric signal control instruction is amplified, correction is handled, liquid is converted to through electricity liquid ratio relief valve 8
Signal is pressed, the output of electricity liquid ratio relief valve 8 controls disc braking by the hydraulic pressure signal of input electrical signal control instruction change
Device forms velocity close-loop control loop.The liquid that i.e. output of electricity liquid ratio relief valve 8 changes according to input electrical signal control instruction
Pressure pressure signal come control the cylinder piston rod of disc-brake 3 export power, the cylinder piston rod of disc-brake 3 output power
Remaining force after being offset with the spring force of disc-brake 3 is acted on the brake disc of brake disc 2 by brake shoe and brake disc, shape
Into braking moment control lifting system motion state according to the changing rule of input electrical signal control instruction braking deceleration,
Implement the control to lifting system.
When the mine hoist torque-controllable sure brake system of the present embodiment is implemented, brakes is according to mine hoist
Safety arrestment requirement and lifting system need to set given speed value, and electric control gear is by given deceleration value and actual feedback speed
Signal sends control instruction after being compared, control instruction after the mode such as amplifying, correcting and handle, then with from pressure sensor
Electric signal control instruction is sent after 5 fuel injection pressure signals sent, hydraulic pressure signal is converted to by electricity liquid ratio relief valve 8, electricity
The braking hoister of hydraulic pressure flow control plate shape brake 3 that the output of liquid proportional overflow valve 8 is changed by input control instruction, it is real
Apply the torque-controllable safety arrestment of mine hoist.
Above-described embodiment is the preferable embodiment of the present invention, but embodiments of the present invention are not by above-described embodiment
Limitation, other are any be away from Spirit Essence of the invention with made under principle change, modification, replacement, combine, simplification,
Equivalent substitute mode is should be, is included in protection scope of the present invention.
Claims (4)
- A kind of 1. mine hoist torque-controllable sure brake system, it is characterised in that：Including reel（1）, hydraulic station, automatically controlled dress Put and detect feedback device, reel（1）It is provided with brake disc（2）, brake disc（2）Both sides are provided with disc-brake（3）；The liquid Pressure station includes energy storage device（6）, electricity liquid ratio relief valve（8）, first inserting component（9）, second inserting component（10）And electromagnetism Reversal valve（11）, the electricity liquid ratio relief valve（8）Arrival end pass through one-way throttle valve（7）Connect energy storage device（6）, it is electro-hydraulic Proportional pressure control valve（8）Arrival end by pipeline respectively with first inserting component（9）, second inserting component（10）And electromagnetic switch Valve（11）Pumping source, electricity liquid ratio relief valve are accessed after connection（8）Arrival end also pass through stop valve（4）With disc-brake（3） Oil cylinder connection.The detection feedback device includes being arranged on reel（1）On tachogenerator and electricity liquid ratio relief valve（8） With disc-brake（3）Oil cylinder between pressure sensor（5）.
- A kind of 2. mine hoist torque-controllable sure brake system according to claim 1, it is characterised in that：The survey Fast sensor collection elevator deceleration signal simultaneously inputs electric control gear, electric control gear receive deceleration signal and with given speed Angle value, which is compared, sends control instruction, and the control instruction is sent to electricity liquid ratio relief valve after Electric signal processing（8）, it is electro-hydraulic Proportional pressure control valve（8）Electric signal control instruction is converted into hydraulic pressure signal and exports the liquid changed by input electrical signal control instruction Pressure pressure annunciator panel shape brake（3）, form velocity close-loop control loop.
- A kind of 3. mine hoist torque-controllable sure brake system according to claim 1, it is characterised in that：The pressure Force snesor（5）The fuel injection pressure signal collected is fed back into electricity liquid ratio relief valve after electric control gear is handled（8）, form pressure Close loop control circuit.
- 4. a kind of braking method of mine hoist torque-controllable sure brake system as claimed in claim 1, its feature exist In：Comprise the following steps：A, need to set given speed value in electric control gear according to mine hoist safety arrestment requirement and lifting system；Pressure sensor in systems is set B,（5）The fuel injection pressure signal collected is fed back into electricity liquid ratio relief valve（8）, shape Into pressure closed loop control loop；C, it is arranged on reel（1）On velocity sensor the Hoist Speed signal collected is fed back into electric control gear, it is automatically controlled Device by the rate signal compared with given velocity amplitude after send control instruction, the control instruction through electric signal at After reason, then with from pressure sensor（5）Electric signal control instruction, electric signal control are sent after the oil pressure pressure signal sent After instructing the modes such as amplified, correction to handle, through electricity liquid ratio relief valve（8）Be converted to hydraulic pressure signal, electricity liquid ratio relief valve （8）Output forms velocity close-loop control by the hydraulic pressure signal control disc-brake 3 of input electrical signal control instruction change Loop, i.e. electricity liquid ratio relief valve（8）The output hydraulic pressure signal that changes according to input electrical signal control instruction control Disc-brake（3）The power of cylinder piston rod output；D, disc-brake（3）The power and disc-brake of cylinder piston rod output（3）Spring force offset after remaining force Brake disc is acted on by brake shoe and brake disc（2）On brake disc, the motion state of the braking moment control lifting system of formation is pressed According to input electrical signal control instruction changing rule and braking deceleration, implement the control to lifting system.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710770093.XA CN107555343A (en) | 2017-08-31 | 2017-08-31 | A kind of mine hoist torque-controllable sure brake system and braking method |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201710770093.XA CN107555343A (en) | 2017-08-31 | 2017-08-31 | A kind of mine hoist torque-controllable sure brake system and braking method |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111352385A (en) * | 2020-03-13 | 2020-06-30 | 湖南网大科技有限公司 | System and method for controlling deceleration motion of working machine |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2001050202A (en) * | 1999-08-09 | 2001-02-23 | Hitachi Constr Mach Co Ltd | Hydraulic control system for hydraulic working machine |
| CN102030280A (en) * | 2010-11-08 | 2011-04-27 | 中信重工机械股份有限公司 | Mine-hoist constant deceleration safety braking system and braking method thereof |
| CN102139840A (en) * | 2011-04-08 | 2011-08-03 | 中信重工机械股份有限公司 | Dual-setting value constant torque secondary braking control system of mine hoister |
| CN102219161A (en) * | 2011-06-14 | 2011-10-19 | 中信重工机械股份有限公司 | Mine hoist constantly-decelerating safe braking system with double working points |
| CN204140548U (en) * | 2014-08-21 | 2015-02-04 | 武汉钢铁(集团)公司 | A kind of novel hydraulic Emergeny Cutoff Valves |
| CN207361670U (en) * | 2017-08-31 | 2018-05-15 | 中信重工机械股份有限公司 | A kind of mine hoist torque-controllable sure brake system |
-
2017
- 2017-08-31 CN CN201710770093.XA patent/CN107555343A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2001050202A (en) * | 1999-08-09 | 2001-02-23 | Hitachi Constr Mach Co Ltd | Hydraulic control system for hydraulic working machine |
| CN102030280A (en) * | 2010-11-08 | 2011-04-27 | 中信重工机械股份有限公司 | Mine-hoist constant deceleration safety braking system and braking method thereof |
| CN102139840A (en) * | 2011-04-08 | 2011-08-03 | 中信重工机械股份有限公司 | Dual-setting value constant torque secondary braking control system of mine hoister |
| CN102219161A (en) * | 2011-06-14 | 2011-10-19 | 中信重工机械股份有限公司 | Mine hoist constantly-decelerating safe braking system with double working points |
| CN204140548U (en) * | 2014-08-21 | 2015-02-04 | 武汉钢铁(集团)公司 | A kind of novel hydraulic Emergeny Cutoff Valves |
| CN207361670U (en) * | 2017-08-31 | 2018-05-15 | 中信重工机械股份有限公司 | A kind of mine hoist torque-controllable sure brake system |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111352385A (en) * | 2020-03-13 | 2020-06-30 | 湖南网大科技有限公司 | System and method for controlling deceleration motion of working machine |
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