CN103950859B - Synchronous concurrent multi-channel constant deceleration safety braking system and method for mine hoist - Google Patents
Synchronous concurrent multi-channel constant deceleration safety braking system and method for mine hoist Download PDFInfo
- Publication number
- CN103950859B CN103950859B CN201410128093.6A CN201410128093A CN103950859B CN 103950859 B CN103950859 B CN 103950859B CN 201410128093 A CN201410128093 A CN 201410128093A CN 103950859 B CN103950859 B CN 103950859B
- Authority
- CN
- China
- Prior art keywords
- hydraulic
- brake
- signal
- loop
- braking
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Landscapes
- Braking Arrangements (AREA)
Abstract
The invention discloses a synchronous concurrent multi-channel constant deceleration safety braking system for a mine hoist. The synchronous concurrent multi-channel constant deceleration safety braking system comprises braking loops consisting of hydraulic systems, constant deceleration closed-loop electrical control devices and detection feedback devices; the braking system comprises at least two parallel independent braking loops; the same constant deceleration set point command signal is input to the constant deceleration closed-loop electrical control device of each independent braking loop, the constant deceleration closed-loop electrical control device of each independent braking loop receives the same speed feedback signal, and a difference value obtained after the speed feedback signal is compared with the constant deceleration set point command signal serves as an input command of each independent braking loop to control the braking loop; each independent braking loop outputs a hydraulic medium to the same executive component; when any one or a plurality of independent braking loops work, the braking system works. The invention also discloses a safety braking control method for the mine hoist based on the system, so that any one or a plurality of braking loops in the effective working conditions output the hydraulic medium to the executive component to execute hoist drum braking work, and the safety braking reliability is improved.
Description
Technical field
The present invention relates to mine hoist safely braking control technical field.
Background technology
Mine hoist is the throat equipment of well work mining, carries the vital task that mineral between underground, equipment, material and personnel carry, and its performance quality is very important for Mine Safety in Production.Mine hoisting system load large (moving-mass can reach hundreds of ton), speed fast (per second more than 10 meters), personnel's many (promote personnel Shi Ke and reach tens of people to hundreds of people), once brake failure, consequence is hardly imaginable; Therefore the deceleration and stopping performance of brake system and reliability are then the important leverages of mine hoisting system safety in production, wherein electro-hydraulic brake system is the key component being related to mine hoist safety deceleration and stopping performance.
Safety arrestment refers to that gig or lifting winch are in operational process, is the braking action stopped rapidly when avoiding occurring safety misadventure; Safety arrestment process is mainly completed by electro-hydraulic brake system.
Permanent deceleration safely braking control mode is mine hoisting system safety arrestment mode the most advanced at present.Permanent deceleration safety arrestment refers to: during safety arrestment, by the control action of closed loop control system, reach the brake mode keeping elevator system braking deceleration invariable in same braking procedure.When safety arrestment, can, under various load, various speed, various operating mode, elevator system be braked according to given constant deceleration/decel.It is in the patent specification of ZL201010534232.7 that detailed technology scheme is documented in the patent No..But the permanent deceleration safety catch of the constant closed loop generally used at present all adopts single loop, and the closed loop control system be namely made up of single brake equipment, electrofluidic control device and detection positioner realizes the constant closed loop brake controlling functions of elevator system in safety arrestment process.
Because mine hoist is a kind of equipment high to device security reliability requirement, and control setup is all made up of several parts, the disabler of any one component part all likely causes systemic-function to lose efficacy, thus causes the serious accident of fatal crass.Therefore current measure, except adopting the components and parts of high reliability, also needs to configure safety arrestment loop for subsequent use.In safety arrestment process, when brake system detects that main brake control loop lost efficacy, be automatically brought to alternate brake control loop and complete safety arrestment work, produce safety misadventure to avoid occurring braking failure.
The back-up safety brake circuit of current employing mainly contains two kinds: one is constant deceleration brake mode constant-moment secondary braking mode for subsequent use.The working process of this standby mode is: in safety arrestment process, when brake system detects that constant deceleration brake loop control lost efficacy, is automatically brought to constant-moment secondary braking control loop for subsequent use and completes safety arrestment process.This alternate brake mode loop is simple, reliable, but due to constant-moment secondary braking mode deceleration and stopping performance not as constant deceleration brake mode performance safety, steadily, and the anti-skidding condition meeting large-scale multirope friction winder is reduced, needs meet the elevator system parameter configuration under two kinds of brake control modes in mine hoisting system design simultaneously, the condition be actually according to parameter is lower designs, elevator system will be caused like this to increase counterweight, strengthen specification of equipment and power, increase the disavantage such as construction cost.Another kind is constant deceleration brake mode constant deceleration brake mode for subsequent use.The working process of this standby mode is: in safety arrestment process, when brake system detects that constant deceleration brake loop control lost efficacy, is automatically brought to constant deceleration brake control loop for subsequent use and completes safety arrestment process.Although this alternate brake mode ensure that deceleration and stopping performance is constant after alternate brake mode is before switching, and though single-circuit braking system before switching after all must have the inherent characteristic of its fault rate; In addition, in switching process, transfer device also must have its fault rate, and the fault rate of two brake circuits before and after conversion and the fault rate of transfer device have Overlay, three devices separately fault rate and constitute whole brake system total failare rate.Such system failure rate for not being optimal concerning the high mine hoist system of security requirement.
For the mode Problems existing adopting standby mode to improve brake system reliability, occur that a kind of multi-channel brake system adopts three brake circuit parallel connections and the brake control mode simultaneously worked.This brake control mode can have three loops to work simultaneously, and from probability theory, the probability broken down in more than two loops simultaneously can greatly reduce, and the probability broken down in more than three loops is simultaneously lower.But in this mode, actuating unit drg is divided into several parts identical with independent loop quantity, each independent loop all only connects a part wherein.Like this, as long as wherein break down in any loop, this partial brake device that this loop controls just fails, and the maximum braking force of whole brake system just have lost part, may braking failure be there is when needs maximum braking force, thus cause serious accident.
Summary of the invention
Based on the problem in background technology, the invention provides a kind of sure brake system fault rate that greatly can reduce prior art, improve the synchronous concurrent multi-channel permanent deceleration mine hoist safe braking control system of the braking safety of mine hoist.
The present invention provides the synchronous concurrent multi-channel of a kind of mine hoist permanent deceleration safely braking control method simultaneously.
Control logic of the present invention is: if back-up circuit and performance loop can be allowed to be connected in parallel (being namely total to output point), and devote oneself to work (synchronously), just there will be the raising of great-leap-forward. simultaneouslyAs long as because there is an independent loop normally to work, whole braking forces of whole brake system just can realize normal work, article two, the probability that more than, break down in loop simultaneously then greatly reduces (refer to specification sheets citing), and the probability broken down in more than three loops is simultaneously lower.So just can improve the reliability of brake system greatly.
Concrete, the present invention realizes by following technical solution:
The permanent deceleration safety braking system of the synchronous concurrent multi-channel of a kind of mine hoist, comprises the brake circuit be made up of hydraulic efficiency pressure system, permanent deceleration closed loop electrical control gear and detection positioner;
Described hydraulic efficiency pressure system comprises for the electro-hydraulic proportion reversing valve of electric liquid signal conversion, conductive liquid piezodielectric and the power element performing braking;
Described detection positioner is for collection signal and by signal feedback to permanent deceleration closed loop electrical control gear;
Described permanent deceleration closed loop electrical control gear receiving feedback signals, and feedback signal is compared with built-in Setting signal, send control command to electro-hydraulic proportion reversing valve according to comparative result, described electro-hydraulic proportion reversing valve output presses the hydraulic medium of control command change to power element;
Further, described brake system at least comprises the parallel independent brake loop of two-way, the perseverance deceleration closed loop electrical control gear in independent brake loop, described every road is embodied as the same permanent deceleration set point command signal of input, and receive same feedback speed signal, difference after comparing with permanent deceleration set point command signal according to feedback speed signal, the input instruction as each independent brake loop controls this brake circuit; Described every bar independent brake loop equal output hydraulic pressure medium is to same power element; Then brake system work during one or more independent brake loop works in office.
As preferred embodiment, described feedback speed signal is by the tachogenerator collection be arranged on lifting drum and feed back to permanent deceleration closed loop electrical control gear.
As preferred embodiment, described permanent deceleration closed loop electrical control gear inbound pacing feedback signal, and compare with perseverance deceleration set point command signal, send control command to electro-hydraulic proportion reversing valve according to comparative result, described electro-hydraulic proportion reversing valve exports and forms velocity close-loop control loop by the hydraulic medium of control command change to power element.
As preferred embodiment, described detection positioner also comprises the pressure sensor be arranged between every bar brake circuit electro-hydraulic proportion reversing valve exit end and power element on hydraulic medium pipeline; The hydraulic medium fuel injection pressure signal collected is fed back to the perseverance deceleration closed loop electrical control gear of place brake circuit by described pressure sensor.
As preferred embodiment, described permanent deceleration closed loop electrical control gear receives oil pressure feedback signal, and compare with electro-hydraulic proportion reversing valve arrival end fuel injection pressure signal, send control command to electro-hydraulic proportion reversing valve according to comparative result, described electro-hydraulic proportion reversing valve exports mineralization pressure close loop control circuit by the hydraulic medium of control command change.
As preferred embodiment, described hydraulic efficiency pressure system also comprises closed-center system, to switch hydraulic efficiency pressure system and normally to work the solenoid directional control valve of operating mode and safety arrestment operating mode; Form path between node after described closed-center system is connected with electro-hydraulic proportion reversing valve hydraulic medium pipeline, be connected with solenoid directional control valve hydraulic medium pipeline after described at least two path in parallel are arranged, solenoid directional control valve is connected to power element through hydraulic medium pipeline.
As preferred embodiment, the entrance termination closed-center system of described electro-hydraulic proportion reversing valve, described closed-center system and hydraulic power source are connected by check valve and obtain hydraulic medium and supplement, and described check valve allows fluid can not counter-flow towards the direction flowing of closed-center system; Otherly between the described path that is arranged in parallel and solenoid directional control valve establish by pass valve; Described solenoid directional control valve is connected to power element through shutoff valve.
A kind of mine hoist safely braking control method, brake system comprises at least two parallel brake circuits be made up of hydraulic efficiency pressure system, permanent deceleration closed loop electrical control gear and detection positioner; Detect positioner for collection signal and by signal feedback to permanent deceleration closed loop electrical control gear; Permanent deceleration closed loop electrical control gear receiving feedback signals, and feedback signal is compared with built-in Setting signal, send the electro-hydraulic proportion reversing valve of control command to hydraulic efficiency pressure system according to comparative result, described electro-hydraulic proportion reversing valve output presses the hydraulic medium of control command change to power element;
Make the perseverance deceleration closed loop electrical control gear of each brake circuit input same permanent deceleration set point command signal, and receive same feedback speed signal; Difference after feedback speed signal is compared with permanent deceleration set point command signal, the input instruction as each independent brake loop controls this brake circuit; To make to appoint one or more effective mode of operation brake circuit common output hydraulic pressure medium to perform lifting drum braking operation to same power element.
As preferred embodiment, the pressure sensor be arranged between every bar brake circuit electro-hydraulic proportion reversing valve exit end and power element on hydraulic medium pipeline gathers hydraulic medium fuel injection pressure signal and feeds back to the perseverance deceleration closed loop electrical control gear in loop, place; Described permanent deceleration closed loop electrical control gear receives oil pressure feedback signal, and compare with electro-hydraulic proportion reversing valve arrival end fuel injection pressure signal, send control command to electro-hydraulic proportion reversing valve according to comparative result, it is that each brake circuit is arranged separately that described electro-hydraulic proportion reversing valve exports mineralization pressure close loop control circuit by the hydraulic medium that control command changes.
Each independent loop of the present invention both can complete separately the constant deceleration brake process of brake system, the process of common synchro control power element braking under the feedback speed signal that can detect at same permanent deceleration set point command signal and same speed sensor again controls, namely defines the permanent deceleration electro-hydraulic brake system of synchronous output point multi-channel altogether; Realize can performing braking operation when appointing one or more loop effectively to work.
When wherein no-output fault appears in an independent loop, this loop is in closed condition, and other independent loop still normally can complete permanent deceleration safety arrestment process; When wherein no-output fault appears in two independent loops, other independent loop still normally can complete permanent deceleration safety arrestment process.When wherein full draining fault appears in an independent loop, this loop hydraulic system is in channel status, the compensating action effectively exported by other independent loop, and whole brake system still normally can complete permanent deceleration safety arrestment process.Therefore make the safety arrestment reliability of brake system have very big raising, therefore great pernicious safety misadventure can be avoided, greatly improve the safety in production level of mine hoist.
It should be noted that, the synchronous output point multi-channel constant deceleration brake mode altogether that the present invention realizes, faced by be not that many static cost control loops are simply in parallel, but the parallel connection of the close loop control circuit of many independent dynamic adjustments.In the course of the work, each moment each bar loop be all in out of phase, different amplitude (on the occasion of or negative value), the Dynamic Regulating Process of different adjustment direction (increase or reduce).At synchronization, in system, the amplitude in each bar loop is in positive and negative overlaying state, and the amplitude after superposition is only the final execution instruction controlling brake system.The superposition example of most typical many dynamic loop is exactly three plase alternating current, when one end of three coil winding of A, B, C phase place of three plase alternating current links together (wye connection), owing to being that phase place all differs 120
oconstant amplitude sinusoid, the superposition amplitude of point of connection is just zero, material is thus formed the zero line of electric power system three-phase four-wire system.Before the technical scheme sizing of the application, severally testing program is taken turns through devising, achieve thousands of groups of trial curve data, again experimental test is carried out to the synchronous output point multi-channel constant deceleration brake Control experiment device altogether of the application, achieve test result, maintain control command amplitude substantially constant after superposition, the control command amplitude in each bar loop is decayed after superposition, demonstrate the feasibility adopting synchronous output point multi-channel constant deceleration brake mode altogether.
And adopt the safety arrestment reliability of brake system of the present invention to have very big raising than prior art products reliability, therefore great pernicious safety misadventure can be avoided, greatly improve the safety in production level of mine hoist.
Accompanying drawing explanation
Fig. 1 is the control system block diagram that the invention is preferably implemented;
Fig. 2 is the hydraulic system principle figure that the invention is preferably implemented;
In figure: 1-reel; 2-brake disc; 3-disc-brake; 4-ball valve; 5-solenoid directional control valve; 6-by pass valve; 7-check valve; 8-electro-hydraulic proportion reversing valve; 9-ball valve; 10-energy storage; 11-pressure sensor.
Detailed description of the invention
Composition graphs 1 and Fig. 2, the mine hoist safe braking control system of this preferred embodiment, comprise the brake circuit that three route hydraulic efficiency pressure systems, permanent deceleration closed loop electrical control gear and detection positioner are formed, described three road brake circuits are arranged in parallel, and each brake circuit structure function is identical and separate.Illustrate for brake circuit one below.
Wherein, hydraulic efficiency pressure system comprises for the electro-hydraulic proportion reversing valve of electric liquid signal conversion, conductive liquid piezodielectric and the power element (disc-brake) performing braking; Detect positioner for collection signal and by signal feedback to permanent deceleration closed loop electrical control gear; Permanent deceleration closed loop electrical control gear receiving feedback signals, and feedback signal is compared with built-in Setting signal, control command is sent to electro-hydraulic proportion reversing valve according to comparative result, the oil cylinder of hydraulic medium to disc-brake of control command change is pressed in electro-hydraulic proportion reversing valve output, forms the permanent deceleration electro-hydraulic brake loop of single loop.
Concrete, detect positioner and be made up of speed loop and pressure circuit; Wherein, permanent deceleration closed loop electrical control gear is fed back to by the tachogenerator picking rate feedback signal be arranged on the reel 1 of gig; Permanent deceleration closed loop electrical control gear inbound pacing feedback signal, and compare with perseverance deceleration set point command signal, send control command to electro-hydraulic proportion reversing valve according to comparative result, the oil cylinder formation velocity close-loop control loop of hydraulic medium to disc-brake of control command change is pressed in electro-hydraulic proportion reversing valve output.Gather hydraulic medium fuel injection pressure signal by the pressure sensor be arranged between every bar brake circuit electro-hydraulic proportion reversing valve exit end and the oil cylinder of disc-brake on hydraulic medium pipeline and feed back to permanent deceleration closed loop electrical control gear; Permanent deceleration closed loop electrical control gear receives oil pressure feedback signal, and compare with electro-hydraulic proportion reversing valve arrival end fuel injection pressure signal, send control command to electro-hydraulic proportion reversing valve according to comparative result, electro-hydraulic proportion reversing valve exports mineralization pressure close loop control circuit by the hydraulic medium of control command change.
Concrete, hydraulic efficiency pressure system also comprises below closed-center system 10-1(and also becomes energy storage), switch hydraulic efficiency pressure system and normally to work the solenoid directional control valve 5 of operating mode and safety arrestment operating mode; Closed-center system 10-1 and electro-hydraulic proportion reversing valve 8-1 form path between node after being connected by hydraulic medium pipeline, wherein, and also can Bonding pressure sensor 11-1 on this path; Path is connected by hydraulic medium pipeline with solenoid directional control valve 5, and solenoid directional control valve 5 hydraulic medium pipeline is connected to the oil cylinder of disc-brake 3.Wherein, the entrance termination closed-center system 10-1 of electro-hydraulic proportion reversing valve 8-1, closed-center system and hydraulic power source are connected by check valve 7-1 and are obtained hydraulic medium and supplement, and check valve allows fluid can not counter-flow towards the direction flowing of closed-center system; Between path and solenoid directional control valve, by pass valve 6 is established on side; Solenoid directional control valve is connected to the oil cylinder of disc-brake through shutoff valve 4.Wherein electro-hydraulic proportion reversing valve 8-1 is electric liquid conversion amplifier element, the instruction of input continually varying electric signal, exports the hydraulic power oil stream of servo-actuated change; Energy storage 10-1 as the oil sources for subsequent use of system, when safety arrestment (comprising power failure) for hydraulic brake system provide control presssure oil; By pass valve 6 is used for the pre-braking operation oil pressure of restriction system; Shutoff valve 9-1 is used for energy storage draining when being maintenance; Shutoff valve 4 is used for cutting off oil between Hydraulic Station and disc-brake 3 and flows when being maintenance; Disc-brake 3 is the hydraulic pressure-power conversion devices as whole system, is also braking power element.In like manner, the hydraulic circuit of independent loop two and independent loop three is made up of the components and parts of correspondence respectively, and principle of work is identical with independent loop one.
By path in parallel between three nodes of hydraulic efficiency pressure system, and the parallel connection of pressure closed loop control loop forms the brake circuit of three independent parallels of this preferred embodiment; Every bar independently brake circuit is all complete, to have a constant deceleration brake function individual control loop, can the constant deceleration brake process of complete independently mine hoist.Wherein, three independently brake circuit input same permanent deceleration set point command signal, and receive the feedback speed signal that same speed sensor detects, the reel 1 actual output speed feedback signal of gig compares rear difference with permanent deceleration set point command signal, input instruction as each independent brake loop controls this constant deceleration brake loop, and all independent output hydraulic pressure medium of every bar brake circuit is to the oil cylinder of disc-brake; I.e. synchronous output point multi-channel control system altogether, then control system work when realizing one or more independent brake loop works in office.
During the synchronous work of output point multi-channel control system altogether, whole independent brake loop is all in running order, each independent brake loop both can complete separately the constant deceleration brake process of control system, the braking procedure of common synchro control disc-brake under the feedback speed signal that can detect at same permanent deceleration set point command signal and same speed sensor again controls.When wherein no-output fault appears in an independent brake loop, both the hydraulic efficiency pressure system in this independent brake loop was without effective output, and this brake circuit is in closed condition, and other two independent loops still normally can complete permanent deceleration safety arrestment process; When wherein no-output fault appears in two independent brake loops, other independent brake loop still normally can complete permanent deceleration safety arrestment process; The then control system work when arbitrary independent brake loop works of realization.When wherein full draining fault appears in an independent brake loop, both this independent brake loop hydraulic system was in draining state, be in channel status, the compensating action effectively exported by other two independent brake loops, whole control system still normally can complete permanent deceleration safety arrestment process; The then control system work when multiple (at least two) independent brake loop works of realization.
In another embodiment, two brake circuits are arranged in parallel, compared to a upper embodiment, when no-output fault appears in brake circuit (great majority belong to this type of fault), the then control system work when arbitrary independent brake loop works can be realized; And when full draining fault appears in brake circuit (a few cases), another independent brake loop then can not realize the compensating action effectively exported, then whole control system normally can not complete permanent deceleration safety arrestment process.Therefore in practical application example, for guaranteeing safety factor, should at least be set to more than three or three independently brake circuit carry out and be unified into control system.
Based on the mine hoist safely braking control method of above-mentioned control system, according to the same permanent deceleration set point command signal of each brake circuit of input permanent deceleration closed loop electrical control gear, and the feedback speed signal of the same speed sensor feedback of each brake circuit permanent deceleration closed loop electrical control gear reception, difference after feedback speed signal compares with permanent deceleration set point command signal, input instruction as each independent brake loop controls this brake circuit, make to appoint one or more effective mode of operation brake circuit output hydraulic pressure medium to perform lifting drum braking operation to power element.
During specific works, input electrical signal instruction be just (or being negative) signal time, for brake circuit one, electro-hydraulic proportion reversing valve 8-1 oil-feed valve port is opened, draining valve port is closed, carry out opening a sluice gate or reducing the operation of lock torque by the oil cylinder that electro-hydraulic proportion reversing valve 8-1 oil-feed valve port enters disc-brake 3 from the hydraulic oil with pressure energy of energy storage 10-1, make disc-brake depart from brake disc 2, electro-hydraulic proportion reversing valve 8-1 valve port open size namely reduce the degree size of lock torque operation and the electric signal instruction size of input proportional; When input electrical signal instruction is for negative (or being just) signal, electro-hydraulic proportion reversing valve 8-1 draining valve port is opened, oil-feed valve port is closed, the in-oil cylinder hydraulic oil of disc-brake 3 flows back to by this electro-hydraulic proportion reversing valve 8-1 draining valve port the operation that fuel tank carries out closing a floodgate or increasing lock torque under retarding spring effect, make disc-brake be adjacent to brake disc 2, its valve port open size namely increase the degree size of lock torque operation and the electric signal instruction size of input proportional.
According to above-described embodiment, compared with prior art, braking control system safety arrestment functional reliability is greatly improved: assuming that the probability of each independent brake loop et out of order in safety arrestment process is one of percentage, both 1%, then two independent brake loops in safety arrestment process simultaneously the probability of et out of order be 1% × 1%=0.01%, both ten thousand/; In like manner, three independent brake loops in safety arrestment process simultaneously the probability of et out of order be 1,000,000/.No-output fault is occurred for independent brake loop, to break down due to an independent brake loop or two independent brake loops are broken down in situation simultaneously, braking control system still can normally work, and the probability minimum (1,000,000/) broken down in three independent brake loops simultaneously, therefore the brake safe reliability of braking control system is greatly improved.On the other hand, even if one there is full draining fault in independent brake loop, by the compensating action that other two or more independent brake loops effectively export, whole braking control system still normally can complete permanent deceleration safety arrestment process, for three independent brake loops and the brake servo circuit be unified into, article two, break down simultaneously and braking control system just can be made to lose efficacy in independent brake loop, and the probability broken down in two independent brake loops be simultaneously ten thousand/, still improve a lot than the braking reliability of prior art.
It is same as the prior art that the present invention does not state part.
Claims (9)
1. the permanent deceleration safety braking system of the synchronous concurrent multi-channel of mine hoist, comprises the brake circuit be made up of hydraulic efficiency pressure system, permanent deceleration closed loop electrical control gear and detection positioner;
Described hydraulic efficiency pressure system comprises for the electro-hydraulic proportion reversing valve of electric liquid signal conversion, conductive liquid piezodielectric and the power element performing braking;
Described detection positioner is for collection signal and by signal feedback to permanent deceleration closed loop electrical control gear;
Described permanent deceleration closed loop electrical control gear receiving feedback signals, and feedback signal is compared with built-in Setting signal, send control command to electro-hydraulic proportion reversing valve according to comparative result, described electro-hydraulic proportion reversing valve output presses the hydraulic medium of control command change to power element; It is characterized in that:
Described brake system at least comprises the parallel independent brake loop of two-way, wherein the perseverance deceleration closed loop electrical control gear in every independent brake loop, road is embodied as the same permanent deceleration set point command signal of input, and receive same feedback speed signal, difference after comparing with permanent deceleration set point command signal according to feedback speed signal, the input instruction as each independent brake loop controls this brake circuit; Independent brake loop, every road equal output hydraulic pressure medium is to same power element; Then brake system work during one or more independent brake loop works in office.
2. the permanent deceleration safety braking system of the synchronous concurrent multi-channel of mine hoist according to claim 1, is characterized in that: described feedback speed signal is by the tachogenerator collection be arranged on lifting drum and feed back to every road permanent deceleration closed loop electrical control gear.
3. the permanent deceleration safety braking system of the synchronous concurrent multi-channel of mine hoist according to claim 1 and 2, it is characterized in that: described permanent deceleration closed loop electrical control gear inbound pacing feedback signal, and compare with perseverance deceleration set point command signal, send control command to electro-hydraulic proportion reversing valve according to comparative result, described electro-hydraulic proportion reversing valve exports and forms velocity close-loop control loop by the hydraulic medium of control command change to power element.
4. the permanent deceleration safety braking system of the synchronous concurrent multi-channel of mine hoist according to claim 1, is characterized in that: described detection positioner also comprises the pressure sensor be arranged between every bar brake circuit electro-hydraulic proportion reversing valve exit end and power element on hydraulic medium pipeline; Described pressure sensor is for gathering hydraulic medium fuel injection pressure signal and feeding back to the perseverance deceleration closed loop electrical control gear of place brake circuit.
5. the permanent deceleration safety braking system of the synchronous concurrent multi-channel of the mine hoist according to claim 1 or 4, it is characterized in that: described permanent deceleration closed loop electrical control gear receives oil pressure feedback signal, and compare with electro-hydraulic proportion reversing valve arrival end fuel injection pressure signal, send control command to electro-hydraulic proportion reversing valve according to comparative result, described electro-hydraulic proportion reversing valve exports mineralization pressure close loop control circuit by the hydraulic medium of control command change.
6. the permanent deceleration safety braking system of the synchronous concurrent multi-channel of mine hoist according to claim 1, is characterized in that: described hydraulic efficiency pressure system also comprises closed-center system, switches hydraulic efficiency pressure system and normally to work the solenoid directional control valve of operating mode and safety arrestment operating mode; Form path between node after described closed-center system is connected with electro-hydraulic proportion reversing valve hydraulic medium pipeline, between at least two nodes, path in parallel is connected with solenoid directional control valve hydraulic medium pipeline after arranging, and solenoid directional control valve is connected to power element through hydraulic medium pipeline.
7. the permanent deceleration safety braking system of the synchronous concurrent multi-channel of the mine hoist according to claim 1 or 6, it is characterized in that: the entrance termination closed-center system of described electro-hydraulic proportion reversing valve, described closed-center system and hydraulic power source are connected by check valve and obtain hydraulic medium and supplement, and described check valve allows fluid can not counter-flow towards the direction flowing of closed-center system; Between the node be arranged in parallel, between path and solenoid directional control valve, by pass valve is established on side; Described solenoid directional control valve is connected to power element through shutoff valve.
8. the synchronous concurrent multi-channel of a mine hoist permanent deceleration safely braking control method, brake system comprises at least two parallel brake circuits be made up of hydraulic efficiency pressure system, permanent deceleration closed loop electrical control gear and detection positioner; Detect positioner for collection signal and by signal feedback to permanent deceleration closed loop electrical control gear; Permanent deceleration closed loop electrical control gear receiving feedback signals, and feedback signal is compared with built-in Setting signal, send the electro-hydraulic proportion reversing valve of control command to hydraulic efficiency pressure system according to comparative result, described electro-hydraulic proportion reversing valve output presses the hydraulic medium of control command change to power element; It is characterized in that:
Make the perseverance deceleration closed loop electrical control gear of each brake circuit input same permanent deceleration set point command signal, and receive same feedback speed signal; Difference after feedback speed signal is compared with permanent deceleration set point command signal, the input instruction as each independent brake loop controls this brake circuit; Lifting drum braking operation is performed to same power element so that one or more effective mode of operation brake circuit common output hydraulic pressure medium will be appointed.
9. the synchronous concurrent multi-channel of mine hoist according to claim 8 permanent deceleration safely braking control method, is characterized in that: the pressure sensor be arranged between every bar brake circuit electro-hydraulic proportion reversing valve exit end and power element on hydraulic medium pipeline gathers hydraulic medium fuel injection pressure signal and feeds back to the perseverance deceleration closed loop electrical control gear in loop, place; Described permanent deceleration closed loop electrical control gear receives oil pressure feedback signal, and compare with electro-hydraulic proportion reversing valve arrival end fuel injection pressure signal, send control command to electro-hydraulic proportion reversing valve according to comparative result, it is that each brake circuit is arranged separately that described electro-hydraulic proportion reversing valve exports mineralization pressure close loop control circuit by the hydraulic medium that control command changes.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410128093.6A CN103950859B (en) | 2014-04-01 | 2014-04-01 | Synchronous concurrent multi-channel constant deceleration safety braking system and method for mine hoist |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410128093.6A CN103950859B (en) | 2014-04-01 | 2014-04-01 | Synchronous concurrent multi-channel constant deceleration safety braking system and method for mine hoist |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103950859A CN103950859A (en) | 2014-07-30 |
| CN103950859B true CN103950859B (en) | 2015-04-08 |
Family
ID=51328252
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410128093.6A Active CN103950859B (en) | 2014-04-01 | 2014-04-01 | Synchronous concurrent multi-channel constant deceleration safety braking system and method for mine hoist |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103950859B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| LU101711B1 (en) * | 2019-08-30 | 2021-03-04 | Guiyang Plateau Mining Machinery Company Ltd | Multi-channel impact-resistant intelligent-constant-decelaration hydraulic braking system |
Families Citing this family (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106321530B (en) * | 2015-06-19 | 2018-03-16 | 北京强度环境研究所 | The low overshoot brake recovery system and its recovery method of a kind of hierarchical loading |
| CN104876105B (en) * | 2015-06-26 | 2016-08-10 | 徐州大恒测控技术有限公司 | A kind of manual secondary safety braking pressure relief device and method |
| AU2016428671B2 (en) * | 2016-11-04 | 2019-10-03 | Taiyuan University Of Technology | Safe-braking control system, mine hoist and safe-braking control method |
| CN107021429A (en) * | 2017-06-06 | 2017-08-08 | 哈尔滨理工大学 | A kind of mine-hoist constant deceleration system |
| CN111376944A (en) * | 2018-12-29 | 2020-07-07 | 比亚迪股份有限公司 | Braking system for a rail vehicle and rail vehicle |
| CN109682588B (en) * | 2019-01-28 | 2021-02-05 | 江苏建筑职业技术学院 | Experimental system for testing constant deceleration braking |
| CN110131252A (en) * | 2019-05-21 | 2019-08-16 | 山东东山新驿煤矿有限公司 | A kind of improved brake for elevator gate control system |
| CN110219836B (en) * | 2019-06-10 | 2023-12-26 | 徐州大恒测控技术有限公司 | Safety switching braking constant-speed-reduction hydraulic system and braking method for elevator |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3204695A1 (en) * | 1982-02-11 | 1983-08-18 | Siemens AG, 1000 Berlin und 8000 München | Device for the safety braking of hoists, in particular drum-type hoists |
| CN2897976Y (en) * | 2006-01-17 | 2007-05-09 | 徐州重型机械有限公司 | Intelligent controller of hoisting brake for crane |
| CN201857238U (en) * | 2010-11-08 | 2011-06-08 | 中信重工机械股份有限公司 | Constant deceleration safety braking system for mine hoist |
| CN102030280B (en) * | 2010-11-08 | 2013-02-27 | 中信重工机械股份有限公司 | Mine-hoist constant deceleration safety braking system and braking method thereof |
| CN203794539U (en) * | 2014-04-01 | 2014-08-27 | 中信重工机械股份有限公司 | Synchronous concurrent multichannel constant-deceleration safety brake system of mine hoist |
-
2014
- 2014-04-01 CN CN201410128093.6A patent/CN103950859B/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| LU101711B1 (en) * | 2019-08-30 | 2021-03-04 | Guiyang Plateau Mining Machinery Company Ltd | Multi-channel impact-resistant intelligent-constant-decelaration hydraulic braking system |
Also Published As
| Publication number | Publication date |
|---|---|
| CN103950859A (en) | 2014-07-30 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103950859B (en) | Synchronous concurrent multi-channel constant deceleration safety braking system and method for mine hoist | |
| CN102030280B (en) | Mine-hoist constant deceleration safety braking system and braking method thereof | |
| CN201857238U (en) | Constant deceleration safety braking system for mine hoist | |
| CN208686672U (en) | A kind of mine hoist safety arrestment perseverance deceleration hydraulic control device | |
| CN203794539U (en) | Synchronous concurrent multichannel constant-deceleration safety brake system of mine hoist | |
| CN102219161B (en) | Mine hoist constantly-decelerating safe braking system with double working points | |
| AU2020202237B2 (en) | Multi-channel impact-resistant intelligent-constant-deceleration hydraulic braking system | |
| CN106672765A (en) | Detection and protection circuit of elevator door lock | |
| CN204281094U (en) | Two overhead traveling cranes hang the coordinated control system carried simultaneously | |
| CN108298452B (en) | Elevator list damper brake group redundant hydraulic control loop | |
| CN102139840B (en) | Dual-setting value constant torque secondary braking control system of mine hoister | |
| EP2638438B1 (en) | Circuit arrangement having an emergency stop switch of a hoist | |
| CN204200723U (en) | Mine hoist hydraulic station modified node method | |
| CN204510183U (en) | A kind of electric control gear of hydraulic bolt formula platform hoist system | |
| CN202766071U (en) | Escalator and moving walk security system | |
| CN108238561A (en) | Safety arrestment series redundancy two-stage brake hydraulic station and its control method | |
| CN206232360U (en) | A kind of two-stage brake hydraulic station for distinguishing different loads operating mode | |
| CN108180187A (en) | Safety arrestment connection in series-parallel redundancy two-stage brake hydraulic station and its control method | |
| CN207361670U (en) | A kind of mine hoist torque-controllable sure brake system | |
| CN216895132U (en) | Three-item locking assembly of heading machine, support and anchor cable tensioning device | |
| CN108358099B (en) | Brake for elevator lock group redundant hydraulic control loop | |
| CN211004339U (en) | Multichannel anti-impact intelligent constant-deceleration hydraulic braking system | |
| CN104477809B (en) | The two close cycles adjusting means of mine hoist braking and braking method | |
| CN202186861U (en) | Double-working-point constant speed reduction safety braking system of mine hoist | |
| CN202829418U (en) | Rotary excavating drilling machine and main hoist steel wire rope pre-tension control system thereof |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |