CN1219160C - Hydraulic arrester with capabilities of speed adjustment and soft braking - Google Patents
Hydraulic arrester with capabilities of speed adjustment and soft braking Download PDFInfo
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- CN1219160C CN1219160C CN 02135816 CN02135816A CN1219160C CN 1219160 C CN1219160 C CN 1219160C CN 02135816 CN02135816 CN 02135816 CN 02135816 A CN02135816 A CN 02135816A CN 1219160 C CN1219160 C CN 1219160C
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Abstract
The present invention relates to a hydraulic speed-regulating type soft brake which belongs to the hydraulic speed-regulating type braking device. The present invention is mainly used for braking a down transport belt type conveyer and can be used for auxiliary startup or overload protection. The present invention aims to attain the purposes of stable braking and to better solve the problems of no capability of speed regulation and the pressure impact of a high-pressure and large-flow hydraulic loop without a cooling appliance. The present invention is composed of a hydraulic system and an electronic control system, wherein the hydraulic system comprises a braking pump and a hydraulic pump station which comprises a manual reversing valve, an electromagnetic overflow valve, a proportion throttle valve, a fixed differential reducing valve, a fine filter, a coarse filter, a bypass valve, an oil tank, a pressure gauge, a stop valve and a sensor; the sensor comprises a flow sensor and a speed sensor which are respectively connected with the electronic control system; the electromagnetic overflow valve comprises a first-guide type overflow valve and an electromagnetic reversing valve, and is used for system unloading and pressure control; an unloading opening of the first-guide type overflow valve is connected with the electromagnetic reversing valve.
Description
Affiliated technical field
The present invention relates to a kind of Hydraulic Adjustable Speed type braking device.Especially the supporting use of mechanical system that be fit to and following fortune sealing-tape machine etc. must be braked.
Background technique
The downward belt conveyor that some inclination angles are bigger; because the sliding force that the gravity of material produces; surpassed running resistance widely; drive motor is moved under generating state; when shutting down braking; sliding force all acts on the braking device, easily causes the malfunctioning generation driving of braking device, causes and runs coal, hurts sb.'s feelings, broken belt, rotor got rid of accidents such as bad.At this situation, many braking device have been developed both at home and abroad, use comparatively general and using effect also preferably one of braking device be the Hydraulic Adjustable Speed break, but its main deficiency has three: the one, carry out the adjusting of braking force with series flow control valve, domestic series flow control valve maximum working (operation) pressure (MWP) is 28Mpa at present, and high pressure high-volume hydraulic system generally should reach the withstand voltage of 35Mpa, press valve so must in system, add base, after base pressed valve to distribute the pressure of 4～5Mpa, series flow control valve could proper functioning.No matter the result is at damped condition or non-damped condition, and it is the work of band pressure that base is pressed valve always, causes heating, thereby makes whole hydraulic system heating, cisco unity malfunction.The 2nd, adopt predefined braking rule to brake speed governing, control section is simple, does not adopt feedback signal, and the braking moment that hydraulic system produced can not be consistent with the required braking moment of sealing-tape machine actual conditions, belongs to open loop control.The 3rd, hydraulic braking sytem generally adopts open system, and the easiest influence that is subjected to surrounding environment of open system behind the oil contamination, often causes whole system (particularly important valve member) cisco unity malfunction.
Summary of the invention
Purpose of the present invention overcomes above-mentioned the deficiencies in the prior art exactly, provides a kind of braking steadily, not need cooler, and the speed governing of the fine solution high-pressure high-flow oil hydraulic circuit of energy and the hydraulic arrester with capabilities of speed adjustment and soft braking of compression shock problem.
The present invention adopts proportional throttle valve to brake speed governing, guarantees that with reduction valve the pressure reduction of proportional throttle valve import and export is stable simultaneously.Brake speed governing by regulating the proportional throttle valve openings of sizes.Under non-damped condition, all element pressure are zero-pressure in the hydraulic arrester with capabilities of speed adjustment and soft braking system, thereby have avoided the heating problem of system.The present invention adopts ratio, integration, differential control law (PID) to control, programmable controller (PLC) carries out data computation, comparison to detected feedback signal with the PID rule, regulate the openings of sizes of proportional throttle valve according to comparative result, make braking moment and load must braking moment consistent, reach the purpose of gradual braking, belong to closed loop control system.Hydraulic braking sytem of the present invention also is an open system, but adopt the air sac type fuel tank, the air bag upper surface contacts with air, lower surface contacts with the fuel tank pasta, both guaranteed to have on the pasta an atmospheric pressure, fluid and air can be kept apart fully again, solve the pollution of moisture content and dust effectively, guarantee the work of whole system normal reliable hydraulic oil.
The present invention is made up of hydraulic system and automatical control system.Hydraulic system includes brake pump and hydraulic power unit, and hydraulic power unit includes hand-operated direction valve, electromagnetic relief valve, proportional throttle valve, Fixed differential reducing valve, fine filter, coarse-grain filtering device, bypass valve, fuel tank, pressure gauge, stop valve, sensor.Sensor comprises flow transducer and speed probe, is connected with automatical control system respectively; Electromagnetic relief valve includes pilot operated compound relief valve and solenoid directional control valve, is used for the off-load and the pressure control of system; Pilot operated compound relief valve off-load mouth links to each other with solenoid directional control valve.Automatical control system includes programmable controller (PLC), digital simulation energy converter (D/A converter), signal amplifier.The digital signal of PLC output converts to and proportional voltage of this digital quantity or current signal through D/A converter, and through after the signal amplifier amplification, the open amount of control electro-hydraulic proportional throttle valve.
The motor that is braked system links to each other with the sealing-tape machine retarder through coupling, and the output shaft of retarder directly drives the conveyor head roll, and the brake pump inlet port links to each other with hydraulic power unit respectively with oil drain out; Brake pump links to each other with the retarder high speed shaft of sealing-tape machine by coupling, makes main system drive soft break and carries out braking work; The same rotating speed of brake pump and motor, and be arranged symmetrically in the retarder both sides; Flow transducer, speed probe, solenoid directional control valve and proportional throttle valve are connected with automatical control system respectively; Automatical control system by signaling line be braked control system and link to each other, this system sends and starts or parking order, automatical control system returns and allows order or carry out the stopping brake order, and rubber conveyer is controlled.
The present invention mainly is applicable to the braking of downward belt conveyor, also can be used for assistant starting or overload protection.Flow transducer of the present invention and speed probe can feed back instantaneous flow rate signal and pump shaft tach signal, in start-up course, unlatching according to the electrical signal control ratio throttle orifice of sensor, system pressure reduces, and adhesive tape quickens operation downwards, electric motor starting when belt speed is tending towards rating value under the material action of gravity, when conveyor stable operation, solenoid directional control valve gets electric, proportional throttle valve dead electricity, hydraulic system off-load.When needing braking, the motor outage, while solenoid directional control valve dead electricity, proportional throttle valve gets, electrical signal control ratio throttle valve valve port by flow transducer and speed probe is slowly closed, system pressure progressively reaches the setting of relief valve, and motor speed is reduced gradually, then mechanical braking lock band-type brake.If carry out emergency braking, solenoid directional control valve and proportional throttle valve be dead electricity simultaneously, and system pressure reaches the setting of relief valve rapidly, and conveyor is by emergency braking.
When downward belt conveyor is braked, adopt this device, and,, adjust braking moment automatically by the control electrohydraulic proportional velocity regulating valve according to magnitude of load, realize steadily braking rapidly.During startup, adopt under this device may command the certainly sliding accelerating process of fortune band under the material weight-driven, when tape speed drops into motor, controlled hydraulic system off-load idle running simultaneously during near rating value again.
The present invention is mainly used in the braking of downward belt conveyor, also can be used for assistant starting or overload protection.Compact structure of the present invention, rationally distributed, braking does not steadily need speed governing and the compression shock problem of cooling apparatus with regard to can solve the high-pressure high-flow oil hydraulic circuit.
Description of drawings
The present invention is further described below in conjunction with accompanying drawing.
Fig. 1 is a hydraulic system principle figure of the present invention;
Fig. 2 is a mounting arrangements schematic representation of the present invention.
Among the figure: 1, fuel tank, 2, stop valve, 3, coarse-grain filtering device, 4, speed probe, 5, motor, 6, brake pump, 7, solenoid directional control valve, 8, pilot operated compound relief valve, 9, hand-operated direction valve, 10,11, pressure gauge, 12, fine filter, 13, bypass valve, 14, Fixed differential reducing valve, 15, proportional throttle valve, 16, amplifier, 17, D/A converter, 18, programmable controller, 19, flow transducer, 20, the rubber conveyer head roll, 21, retarder, 22,23,24, coupling, 25, master control system, 26, automatical control system, 27, the high pressure return tube, 28, the low pressure oil inlet pipe, 29, hydraulic power unit, 30, bearing support, 31, adhesive tape.
Embodiment:
Hydraulic arrester with capabilities of speed adjustment and soft braking is a subtense angle, must be braked system's (main system) and be used.The motor 5 of main system links to each other with the retarder 21 of sealing-tape machine through coupling 22, and the output shaft of retarder 21 directly drives conveyor head roll 20.Brake pump 6 inlet ports link to each other with hydraulic power unit 29 respectively with oil drain out.Hand-operated direction valve 9, pilot operated compound relief valve 8, solenoid directional control valve 7, proportional throttle valve 15, Fixed differential reducing valve 14, fine filter 12, coarse-grain filtering device 3, bypass valve 13, fuel tank 1, pressure gauge 10,11, stop valve 2, flow transducer 19, speed probe 4 all are arranged in the hydraulic power unit 29.Brake pump 6 links to each other with retarder 21 high speed shafts of sealing-tape machine by coupling 23, makes main system drive soft break and carries out braking work.Brake pump 6 and motor 5 same rotating speeds, and be arranged symmetrically in retarder 21 both sides.Flow transducer 19, speed probe 4, and solenoid directional control valve 7 be connected with automatical control system respectively with proportional throttle valve 15.Automatical control system links to each other with master control system 25 by signaling line.Main system is sent to subtense angle and is started or parking order, and subtense angle returns and allows order or carry out the stopping brake order, and press the PID control criterion, real-time to rubber conveyer start, the control of braking and proper functioning.
Shown in Figure 1: hand-operated direction valve 9 is selected the two-position three way type for use, and one position port divides two-way, leads up to pilot operated compound relief valve 8, solenoid directional control valve 7 connected tanks 1; Another road links to each other with fuel tank 1 by fine filter 12, Fixed differential reducing valve 14, proportional throttle valve 15 in proper order; The another one port is directly connected fuel tank 1, reaches the purpose of bypass oil return off-load.
Be provided with the air bag that fluid and air can be kept apart fully on fuel tank 1, the air bag upper surface contacts with air, and lower surface contacts with the fuel tank pasta.Solved the pollution of moisture content and dust effectively, guaranteed the work of whole system normal reliable hydraulic oil.
Claims (2)
1, the soft break of a kind of Hydraulic Adjustable Speed type is characterized in that being made up of hydraulic system and automatical control system; Hydraulic system includes brake pump and hydraulic power unit, and hydraulic power unit includes hand-operated direction valve, electromagnetic relief valve, proportional throttle valve, Fixed differential reducing valve, fine filter, coarse-grain filtering device, bypass valve, fuel tank, pressure gauge, stop valve, sensor; Sensor comprises flow transducer and speed probe, is connected with automatical control system respectively; Electromagnetic relief valve includes pilot operated compound relief valve and solenoid directional control valve, and pilot operated compound relief valve off-load mouth links to each other with solenoid directional control valve; Hand-operated direction valve is the two-position three way type, and one position port divides two-way, leads up to pilot operated compound relief valve, solenoid directional control valve connected tank; Another road links to each other with fuel tank by fine filter, Fixed differential reducing valve, proportional throttle valve in proper order; The another one port is directly connected fuel tank; Automatical control system includes programmable controller, digital simulation energy converter, signal amplifier; The motor that is braked system links to each other with the sealing-tape machine retarder through coupling, and the output shaft of retarder directly drives the conveyor head roll, and the brake pump inlet port links to each other with hydraulic power unit respectively with oil drain out; Brake pump links to each other with the retarder high speed shaft of sealing-tape machine by coupling, the same rotating speed of brake pump and motor, and be arranged symmetrically in the retarder both sides; Flow transducer, speed probe, solenoid directional control valve and proportional throttle valve are connected with automatical control system respectively; Automatical control system by signaling line be braked control system and link to each other, the digital signal of programmable controller output converts to and proportional voltage of this digital quantity or current signal through the digital simulation energy converter, and through after the signal amplifier amplification, the open amount of control electro-hydraulic proportional throttle valve.
2, hydraulic arrester with capabilities of speed adjustment and soft braking as claimed in claim 1 is characterized in that being provided with on the fuel tank air bag that fluid and air can be kept apart fully, and the air bag upper surface contacts with air, and lower surface contacts with the fuel tank pasta.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 02135816 CN1219160C (en) | 2002-11-13 | 2002-11-13 | Hydraulic arrester with capabilities of speed adjustment and soft braking |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 02135816 CN1219160C (en) | 2002-11-13 | 2002-11-13 | Hydraulic arrester with capabilities of speed adjustment and soft braking |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1415509A CN1415509A (en) | 2003-05-07 |
| CN1219160C true CN1219160C (en) | 2005-09-14 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 02135816 Expired - Fee Related CN1219160C (en) | 2002-11-13 | 2002-11-13 | Hydraulic arrester with capabilities of speed adjustment and soft braking |
Country Status (1)
| Country | Link |
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| CN (1) | CN1219160C (en) |
Families Citing this family (19)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN100350168C (en) * | 2005-12-16 | 2007-11-21 | 太原理工大学 | Wheel type explosion-proof hydraulic brake |
| CN102167023B (en) * | 2011-04-09 | 2013-01-02 | 太原理工大学 | Hydraulic retarding braking machine |
| CN102328806A (en) * | 2011-05-30 | 2012-01-25 | 泰安力博机电科技有限公司 | Hydraulic controllable braking device |
| CN102328812A (en) * | 2011-05-30 | 2012-01-25 | 泰安力博机电科技有限公司 | Self-cooling controllable braking device |
| CN202657611U (en) * | 2012-07-04 | 2013-01-09 | 北京起重运输机械设计研究院 | Hydraulic speed regulation brake device for downward belt |
| CN102897490B (en) * | 2012-10-31 | 2015-04-08 | 中国矿业大学 | Braking system for downward belt conveyor |
| CN102991571B (en) * | 2012-12-04 | 2015-10-28 | 中联重科股份有限公司 | Hydraulic control circuit, hydraulic control system and fluid control valve group |
| CN103144624B (en) * | 2013-03-11 | 2015-05-13 | 西安航空制动科技有限公司 | Brake control valve of airplane |
| CN103144766B (en) * | 2013-03-11 | 2015-04-08 | 西安航空制动科技有限公司 | Electric hydraulic pressure servo valve |
| CN103144622B (en) * | 2013-03-23 | 2015-12-23 | 牛国亮 | A kind of hydraulic vehicle brake system |
| CN103352889B (en) * | 2013-07-08 | 2015-07-01 | 太原理工大学 | Method for buffering hydraulic system shock of crawler loader |
| CN104514770B (en) * | 2013-09-30 | 2017-09-26 | 哈尔滨飞机工业集团有限责任公司 | A kind of micro-pressure calibration equipment of Hydraulic Elements |
| CN103587897A (en) * | 2013-12-02 | 2014-02-19 | 郑州市嵩阳煤机制造有限公司 | Downward transport belt conveyor energy-saving braking system |
| CN104176021A (en) * | 2014-08-15 | 2014-12-03 | 武汉理工大学 | Aerodynamics additional device for improving automobile braking performance |
| CN105882640B (en) * | 2016-05-17 | 2022-06-24 | 法法汽车(中国)有限公司 | Vehicle control method and device |
| CN111175478A (en) * | 2019-12-26 | 2020-05-19 | 太原理工大学 | Intelligent oil filtering and monitoring system |
| CN113575115B (en) * | 2021-07-02 | 2022-04-08 | 农业农村部南京农业机械化研究所 | Wheel-track combined regenerated rice combine harvester |
| CN113575116B (en) * | 2021-07-02 | 2022-04-12 | 农业农村部南京农业机械化研究所 | Triangular crawler harvester for ratooning rice |
| CN113650596B (en) * | 2021-09-16 | 2022-07-12 | 广西柳工机械股份有限公司 | Service braking system, control method and electric loader |
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2002
- 2002-11-13 CN CN 02135816 patent/CN1219160C/en not_active Expired - Fee Related
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| Publication number | Publication date |
|---|---|
| CN1415509A (en) | 2003-05-07 |
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| C06 | Publication | ||
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| C14 | Grant of patent or utility model | ||
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| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20050914 Termination date: 20101113 |
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| EE01 | Entry into force of recordation of patent licensing contract |
Application publication date: 20030507 Assignee: Taiyuan BST Machine Electricity Liquid Engineering Co., Ltd. Assignor: Taiyuan University of Technology Contract record no.: 2010990000340 Denomination of invention: Hydraulic arrester with capabilities of speed adjustment and soft braking Granted publication date: 20050914 License type: Exclusive License Record date: 20100602 |
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| LICC | Enforcement, change and cancellation of record of contracts on the licence for exploitation of a patent or utility model |