CN201660396U - Hydraulic station of hydraulic delay braking hoisting machine - Google Patents
Hydraulic station of hydraulic delay braking hoisting machine Download PDFInfo
- Publication number
- CN201660396U CN201660396U CN2010201528356U CN201020152835U CN201660396U CN 201660396 U CN201660396 U CN 201660396U CN 2010201528356 U CN2010201528356 U CN 2010201528356U CN 201020152835 U CN201020152835 U CN 201020152835U CN 201660396 U CN201660396 U CN 201660396U
- Authority
- CN
- China
- Prior art keywords
- valve
- solenoid directional
- oil
- control valve
- directional control
- 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.)
- Expired - Fee Related
Links
Images
Landscapes
- Fluid-Pressure Circuits (AREA)
Abstract
The utility model relates to a hydraulic station of a hydraulic delay braking hoisting machine. In the technical scheme, a motor drives an oil pump, the oil pump is connected with a proportional relief valve, and a shuttle valve on the oil channel of the proportional relief valve is connected with a brake through a first solenoid directional valve; an oil channel communicating the first solenoid directional valve and a first brake is provided with a one-way throttle valve, wherein the two ends of the one-way throttle valve are respectively connected with a power accumulator and a hydraulic changeover valve; the two ends of a one-way speed control valve are respectively connected with an overflow valve and a control oil port of the hydraulic changeover valve, wherein the oil channel of the one-way speed control valve is communicated with the oil channel of the shuttle valve; and an oil channel shared by the one-way speed control valve and the overflow valve is connected with a second brake through a third solenoid directional valve, an oil channel communicating the one-way throttle valve and the hydraulic changeover valve is provided with a fifth solenoid directional valve, the oil inlet of the fifth solenoid directional valve is communicated with the one-way throttle valve, and the oil outlet of the fifth solenoid directional valve is communicated with the hydraulic changeover valve. With the additional solenoid directional valves, the system pressure can be zero prior to gate opening, and thereby facilitating the gate opening of the system.
Description
Technical field
The utility model is particularly related to a kind of mine winch, harbour are finished the mine hoist safety braking with hydraulic technique with cable car, cableway etc. hydraulic time-delay double-stage braking hoister hydraulic station that is used for.
Background technology
Various liftings, Transport Machinery adopt hydraulic time-delay double-stage braking to finish usually.Hydraulic time-delay double-stage braking is one of important performance of various liftings, Transport Machinery, there is not two stage braking if wherein be used for the winch of various liftings, Transport Machinery, the winch of fast running then, when running into sudden power, all unexpected band-type brake brakes of drg can make the steel rope shake, and personnel are easy to be bruised in the winch, if the winch steel wire is broken, also can cause great safety misadventure.The applicant is in the patent of application on January 22nd, 2009 about hydraulic time-delay double-stage braking hoister hydraulic station, publication number is CN101475130A, described Hydraulic Station service braking mainly is made up of the oil circuit that proportional pressure control valve, first, the 3rd solenoid directional control valve are formed, in normal operation, do not work in the hydraulic time-delay double-stage braking loop, when emergency episode (having a power failure or the outage etc. of breaking down of winch circuit) occurring, start safety arrestment, hydraulic pressure time-delay secondary safety arrestment loop works as unexpected full ore deposit.Though this system's two stage braking is swift in response, stable, make advantages such as two stage braking dependable performance, but Hydraulic Station must make proportional pressure control valve set up the pressure of 0.35-0.5Mpa before opening a sluice gate earlier, after pressure oil promotion hydraulicchange-over valve core moves to left, could open first solenoid directional control valve (1DT).Open the control handle that promotes proportional pressure control valve behind first solenoid directional control valve again, make oil pressure from low to high, open lock first drg and second drg, this open a sluice gate to operate cumbersome.
Summary of the invention
The purpose of this utility model provides a kind of hydraulic time-delay double-stage braking hoister hydraulic station, increases by the 5th solenoid directional control valve, and system pressure can be zero before opening a sluice gate, and it is more convenient that system is opened a sluice gate.
The purpose of this utility model is achieved in that hydraulic time-delay double-stage braking hoister hydraulic station, by the motor-driven oil pump, connects proportional pressure control valve on the oil circuit of oil pump, and proportional pressure control valve is connected with first drg by shuttle valve, first solenoid directional control valve; The oil circuit that first solenoid directional control valve is communicated with drg is provided with one-way throttle valve, and an end of one-way throttle valve is connected with accumulator, and the other end is connected with hydraulicchange-over valve; One end of unidirectional governor valve is connected with by pass valve, and the oil circuit of the other end is communicated with the hydraulic fluid port of hydraulicchange-over valve control spool action; The oil circuit of unidirectional governor valve is communicated with the oil circuit of shuttle valve; By pass valve is connected between oil circuit that first solenoid directional control valve is communicated with first drg and unidirectional governor valve and the oil circuit that first solenoid directional control valve is communicated with; Described first solenoid directional control valve is connected in series by oil circuit with second solenoid directional control valve; Be connected with second drg by the 3rd solenoid directional control valve on the common oil circuit of described unidirectional governor valve and by pass valve; The 3rd solenoid directional control valve and the 4th solenoid directional control valve are by oil circuit and connect, the oil circuit that described one-way throttle valve is communicated with hydraulicchange-over valve is provided with the 5th solenoid directional control valve, the 5th solenoid directional control valve oil inlet is communicated with one-way throttle valve, and the 5th solenoid directional control valve oil outlet is communicated with hydraulicchange-over valve.
Owing to adopt technique scheme, in hydraulic pressure time-delay braking gig Hydraulic Station system, the 5th solenoid directional control valve is set, it is more convenient that system is opened a sluice gate.When not having the 5th solenoid directional control valve, must make proportional pressure control valve set up the pressure of 0.35-0.5Mpa earlier before opening a sluice gate, after pressure oil promotion hydraulicchange-over valve core moves to left, could open first solenoid directional control valve 12, opened the control handle that promotes proportional pressure control valve behind first solenoid directional control valve again, make oil pressure from low to high, open first drg and second drg.After the 5th solenoid directional control valve was set, system pressure can be zero before opening a sluice gate, first solenoid directional control valve, the 3rd solenoid directional control valve, the energising of the 5th solenoid directional control valve, promote the proportional valve control handle, make oil pressure from low to high, open first drg and second drg, it is simpler to open a sluice gate operation.
Description of drawings
Fig. 1 is the structural representation of hydraulic time-delay double-stage braking hoister hydraulic station described in the utility model.
In the accompanying drawing, 1 is coarse filter; 2 is motor; 3 is oil pump; 4 is proportional pressure control valve; 5 is fine filter; 6 is shuttle valve; 7 is unidirectional governor valve; 8 is hydraulicchange-over valve; 9 is by pass valve; 10 is one-way throttle valve; 11 is energy storage; 12,13,14,15 be respectively first, second, third, fourth solenoid directional control valve; 16 is first drg, and 17 is fuel tank, and 18 is second drg, and 19 is the 5th solenoid directional control valve.
The specific embodiment
Referring to Fig. 1, hydraulic pressure time-delay braking gig Hydraulic Station described in the utility model, motor 2 is electrically connected with oil pump 3, is used to drive oil pump 3, and the oil inlet end of oil pump is connected with coarse filter 1, is used to filter hydraulic oil.The oil outlet end of oil pump 3 is connected with fine filter 5, further filters hydraulic oil, guarantees to enter the cleanliness level of whole Hydraulic Station hydraulic oil.Connect proportional pressure control valve 4 on the oil circuit of the oil outlet end of oil pump 3.Hydraulic Station is according to above-mentioned setting, by 2 motors, oil pump, thick fine filter, and proportional pressure control valve, and connect a shuttle valve 6 between on the common oil circuit of 2 proportional pressure control valves and oil pump oil outlet end and form the dual power source double control systems.Shuttle valve is connected with first drg 16 by first solenoid directional control valve 12; First solenoid directional control valve is provided with one-way throttle valve 10 with the oil circuit that first drg 16 is communicated with, one end of one-way throttle valve is connected with accumulator 11, the other end is connected with hydraulicchange-over valve 8, the feed circuit that one-way throttle valve and energy storage are formed directly is communicated with the first drg oil circuit, realizes the repairing voltage stabilizing function of one-level oil pressure.The oil circuit that described one-way throttle valve 10 is communicated with hydraulicchange-over valve 8 is provided with the 5th solenoid directional control valve 19, the five solenoid directional control valves 19 oil inlets and is communicated with one-way throttle valve 10, and the 5th solenoid directional control valve 19 oil outlets are communicated with hydraulicchange-over valve 8.After increasing by the 5th solenoid directional control valve 19, system pressure can be zero before opening a sluice gate, first solenoid directional control valve 12, the 3rd solenoid directional control valve 14,19 energisings of the 5th solenoid directional control valve, promote the proportional valve control handle, make oil pressure from low to high, open first drg 16 and second drg 18, it is simpler to open a sluice gate operation.One end of unidirectional governor valve 7 is connected with by pass valve, and the oil circuit of the other end is communicated with the hydraulic fluid port of the control spool action of hydraulicchange-over valve 8, and the time regulating loop that described hydraulicchange-over valve, unidirectional governor valve are formed makes the one-level braking have the regulatory function of delay time.Unidirectional governor valve 7 also is communicated with first solenoid directional control valve 12, and the oil circuit of unidirectional governor valve 7 is communicated with the oil circuit of shuttle valve.By pass valve 9 is connected between oil circuit that first solenoid directional control valve 12 is communicated with first drg 16 and unidirectional governor valve 7 and the oil circuit that first solenoid directional control valve 12 is communicated with, the by pass valve oil inlet is communicated with the oil circuit of first drg, by pass valve into and out of hydraulic fluid port respectively with being communicated with of first solenoid directional control valve into and out of hydraulic fluid port, realize the voltage regulation function of one-level oil pressure.Described first solenoid directional control valve is connected in series by oil circuit with second solenoid directional control valve 13, makes total system have releasing or keeps the two stage braking function.Be connected with second drg 18 by the 3rd electromagnetic valve 14 on the common oil circuit of described unidirectional governor valve 7 and by pass valve 9.The 3rd electromagnetic valve 14 and the 4th solenoid directional control valve 15 are by oil circuit and connect.Described second solenoid directional control valve is the solenoid directional control valve that has steady arm.
This hydraulic work system principle is as follows: during normal operation, starter motor, hydraulic oil passes through shuttle valve 4 through oil pump 3, make first solenoid directional control valve 12,14 energisings of the 3rd solenoid directional control valve, hydraulic oil enters first drg 16, second drg 18 respectively through solenoid directional control valve 12,14, at this moment the oil that comes out from shuttle valve enters unidirectional governor valve 7 through another branch road, promotes the hydraulicchange-over valve core and moves to left, and closes an oil return line in first drg.Scaling up by pass valve electric current, system pressure raise, and when system pressure during greater than 4Mpa, hydraulic oil overcomes spring force, opens plate disc brake, and winch is started working.In the time will stopping winch, reduce the received current of proportional pressure control valve, control presssure reduces, and plate disc brake is band-type brake under the spring force effect, makes the winch stop motion.At this moment the oil that comes out from oil pump and flow back to fuel tank 17 from the oily passing ratio by pass valve that plate disc brake is returned.
Learn the oil circuit realization that this Hydraulic Station service braking partly mainly is made up of proportional pressure control valve 4, solenoid directional control valve 12,14 from the above mentioned.Hydraulic pressure time-delay brake circuit is inoperative when normal operation.
Hydraulic pressure time-delay brake circuit is mainly used in the safety arrestment of winch when emergency episode (having a power failure or the outage etc. of breaking down of winch circuit as suddenly full ore deposit) occurring in operational process, the hydraulic time-delay double-stage braking oil circuit realization that hydraulic pressure time-delay secondary safety arrestment loop partly is made up of unidirectional governor valve 7, hydraulicchange-over valve 8, by pass valve 9, one-way throttle valve 10, energy storage 11, solenoid directional control valve 12,13.
The effect of hydraulic pressure time-delayed safe braking is, when the winch emergency power off, oil pump shuts down, system pressure reduces to zero, solenoid directional control valve 12,14 outages, in two groups of drgs (first drg and second drg), oil in the II group oil pipe is got back to fuel tank by solenoid directional control valve 14, the second drg band-type brake that links to each other with II group oil pipe, with 1/2 braking force braking, the oil pressure in the drg that another is organized with the I oil pipe links to each other is stopped up by the 4DT of solenoid directional control valve 13, can not oil sump tank, be higher than the fluid of first class pressure part, flow back to fuel tank from by pass valve 9, first drg that links to each other with I group oil pipe is under the first class pressure effect, be in the lagging state, do not play brake action, when winch after reducing running velocity under the second drg effect of II group oil pipe or after slowly coming to a complete stop, the oil pressure of one-level braking is at this moment got back to fuel tank by hydraulicchange-over valve 8, the first drg brake sticking brake of I group oil pipe is checked winch safety.And the commutation of hydraulicchange-over valve is to promote spool by spring to move to right, and by the unidirectional governor valve control spool time length that moves to right, thus control reversing time.Fuel tank is connected in commutation from the winch sudden power to hydraulicchange-over valve, is called the two stage braking delay time during this period of time.Regulate the governor valve openings of sizes, scalable two stage braking delay time.
The effect of each valve is as follows in the hydraulic pressure time-delay brake circuit:
(1) function of by pass valve is to regulate one-level oil pressure pressure.By regulating this valve, can obtain different one-level oil pressure force value.During normal operation, the by pass valve inlet and outlet pressure equates that by pass valve is inoperative, when sudden power, and the vanishing immediately of by pass valve delivery pressure, at this moment the pressure in the oil pipe I is the pressure that by pass valve is set.One-level braking oil pressure value generally is made as 2-3Mpa.
(2) hydraulicchange-over valve and unidirectional governor valve make up, and finish the delay function of system's one-level oil pressure, close unidirectional governor valve, and the native system one-level oil pressure dwell time can reach more than one minute; Governor valve reaches maximum, and the dwell time is about 0.3 second.Regulate governor valve, can obtain different one-level oil pressure in-service times.Its in-service time is to be set up by governor valve.Its principle is: the two ends of being controlled the hydraulicchange-over valve spool by unidirectional governor valve and spring respectively.When system's normal operation, pressure oil is entered by unidirectional governor valve, promotes hydraulicchange-over valve and closes, and brake pipe I oil circuit and fuel tank are disconnected.When emergency braking occurring, the outage of full ore deposit, system pressure disappears, oil pipe I is in one-level oil pressure state, and spring promotes the hydraulicchange-over valve spool and moves to right, and passes through t second, behind system shutdown, hydraulicchange-over valve is opened by spring, and brake pipe I oil circuit pressure is reduced to zero and finished two stage braking.
(3) one-way throttle valve and energy storage combination realizes giving the one-level braking oil pressure to leak the function of repairing.Because the native system energy storage communicates with brake piping, during normal operation, the energy storage oil pressure is identical with system oil pressure.One-way throttle valve is housed before the energy storage, and when system entered one-level braking oil pressure situation, energy storage pressure was higher than the pressure in the one-level brake circuit, there is pressure reduction before and after the one-way throttle valve, regulate the flow regulating valve openings of sizes, can make the repairing amount equal dredge oil amount, to keep the one-level brake-pressure invariable.
(4) solenoid directional control valve 13 of band detent mechanism and solenoid directional control valve 12 combinations realize removing or keeping the two stage braking function.As: when the cage that the mine is used is worked in well, the 4DT of first solenoid directional control valve, 12 second solenoid directional control valves energising, system possesses the two stage braking function.When cage arrived well head, one side winch passing ratio spill valve decompression was braked and is slowed down, if at this moment run into sudden power, and can be without two stage braking.At this moment, do not have an accident if do not remove the two stage braking cage just might go out well head.Can not adopt two stage braking when therefore, the winch cage is to well head.The 3DT energising of system's second solenoid directional control valve, the two stage braking function is then removed in the 4DT outage.
Claims (1)
1. a hydraulic pressure time-delay braking gig Hydraulic Station by the motor-driven oil pump, connects proportional pressure control valve on the oil circuit of oil pump, and proportional pressure control valve is connected with first drg by shuttle valve, first solenoid directional control valve; First solenoid directional control valve is provided with one-way throttle valve with the oil circuit that first drg is communicated with, and an end of one-way throttle valve is connected with accumulator, and the other end is connected with hydraulicchange-over valve; One end of unidirectional governor valve is connected with by pass valve, and the oil circuit of the other end is communicated with the hydraulic fluid port of hydraulicchange-over valve control spool action; The oil circuit of unidirectional governor valve is communicated with the oil circuit of shuttle valve; By pass valve is connected between oil circuit that first solenoid directional control valve is communicated with first drg and unidirectional governor valve and the oil circuit that first solenoid directional control valve is communicated with; Described first solenoid directional control valve is connected in series by oil circuit with second solenoid directional control valve; Be connected with second drg by the 3rd solenoid directional control valve on the common oil circuit of described unidirectional governor valve and by pass valve; The 3rd solenoid directional control valve and the 4th solenoid directional control valve are by oil circuit and connect, it is characterized in that: the oil circuit that described one-way throttle valve is communicated with hydraulicchange-over valve is provided with the 5th solenoid directional control valve, the 5th solenoid directional control valve oil inlet is communicated with one-way throttle valve, and the 5th solenoid directional control valve oil outlet is communicated with hydraulicchange-over valve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010201528356U CN201660396U (en) | 2010-04-08 | 2010-04-08 | Hydraulic station of hydraulic delay braking hoisting machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010201528356U CN201660396U (en) | 2010-04-08 | 2010-04-08 | Hydraulic station of hydraulic delay braking hoisting machine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201660396U true CN201660396U (en) | 2010-12-01 |
Family
ID=43230811
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010201528356U Expired - Fee Related CN201660396U (en) | 2010-04-08 | 2010-04-08 | Hydraulic station of hydraulic delay braking hoisting machine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201660396U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| CN104196927A (en) * | 2014-08-08 | 2014-12-10 | 徐州五洋科技股份有限公司 | Control device for disk brake of downward-conveying belt conveyor |
| CN117142380A (en) * | 2023-10-23 | 2023-12-01 | 中信重工开诚智能装备有限公司 | Electric control automatic driving system of mining elevator |
| CN118047323A (en) * | 2024-04-10 | 2024-05-17 | 中信重工开诚智能装备有限公司 | Double-system hydraulic station of elevator and control method for redundant safety braking of double-system hydraulic station |
-
2010
- 2010-04-08 CN CN2010201528356U patent/CN201660396U/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| CN104196927A (en) * | 2014-08-08 | 2014-12-10 | 徐州五洋科技股份有限公司 | Control device for disk brake of downward-conveying belt conveyor |
| CN104196927B (en) * | 2014-08-08 | 2018-04-27 | 徐州五洋科技股份有限公司 | A kind of Disc Brakes of Downward Belt Conveyor control device |
| CN117142380A (en) * | 2023-10-23 | 2023-12-01 | 中信重工开诚智能装备有限公司 | Electric control automatic driving system of mining elevator |
| CN117142380B (en) * | 2023-10-23 | 2024-02-13 | 中信重工开诚智能装备有限公司 | Electric control automatic driving system of mining elevator |
| CN118047323A (en) * | 2024-04-10 | 2024-05-17 | 中信重工开诚智能装备有限公司 | Double-system hydraulic station of elevator and control method for redundant safety braking of double-system hydraulic station |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101475130B (en) | Hydraulic time-delay double-stage braking hoister hydraulic station | |
| CN102153027B (en) | Stepless regulation constant tension device for hydraulic winch | |
| CN104925685B (en) | A kind of winch hydraulic system that cable is led by stepless time adjustment constant tensile control | |
| CN103613021B (en) | A kind of winding hydraulic control system and engineering machinery | |
| CN102910550B (en) | Winch emergency pay-off module | |
| CN103807232B (en) | The fluid pressure drive device of engineering machinery | |
| CN108706463B (en) | Hydraulic control system of crane | |
| CN201660396U (en) | Hydraulic station of hydraulic delay braking hoisting machine | |
| CN103601088A (en) | Large load sensitive type tension-releasing hydraulic dragging winch | |
| CN205820780U (en) | The self-stopping anchor winch hydraulic control system of a kind of band | |
| CN110219836B (en) | Safety switching braking constant-speed-reduction hydraulic system and braking method for elevator | |
| CN203463385U (en) | Energy-saving hoisting system of hydraulic crane | |
| CN108557675B (en) | A kind of safety arrestment redundancy perseverance deceleration hydraulic station and its control method | |
| CN107892240B (en) | A kind of winch emergency release and its control method | |
| CN204387167U (en) | The hydraulic braking sytem that a kind of moment is controlled | |
| CN108408617B (en) | Hydraulic wringing mill | |
| CN202415082U (en) | Synchronous hydraulic driving system and lifting platform | |
| CN110526152A (en) | Multichannel protecting against shock intelligent constant deceleration brake fluid system | |
| CN106315442A (en) | Automatic cable arranging hydraulic control system for cable dragging machine | |
| CN108584739A (en) | Emergent overload protective device and its working method | |
| CN208648608U (en) | A kind of automatic brake vehicle type Operating Pressure equipment balance Winch control system | |
| CN109707567B (en) | Variable-pressure yaw brake hydraulic system of wind generating set and control method thereof | |
| CN110482408A (en) | A kind of electro-hydraulic automatic control device of grab type crawler crane | |
| CN201952155U (en) | Mine winch preventing from magnifying slip | |
| CN103696996A (en) | Crane and hydraulic control system thereof |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20101201 Termination date: 20130408 |