CN102295154B - Electro-hydraulic control system for disc-type braking device of declining belt conveyor - Google Patents
Electro-hydraulic control system for disc-type braking device of declining belt conveyor Download PDFInfo
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- CN102295154B CN102295154B CN 201110152392 CN201110152392A CN102295154B CN 102295154 B CN102295154 B CN 102295154B CN 201110152392 CN201110152392 CN 201110152392 CN 201110152392 A CN201110152392 A CN 201110152392A CN 102295154 B CN102295154 B CN 102295154B
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Abstract
The invention discloses an electro-hydraulic control system for a disc-type braking device of a declining belt conveyor, and belongs to the technical field of electro-hydraulic control system application. The electro-hydraulic control system comprises a belt conveyor driving roller, a braking head, a braking disc, an oil tank, a gear pump, a speed increasing device, a pressure transmitter I, a pressure transmitter II, an energy accumulator I, an energy accumulator II, an electromagnetic directional valve I, an electromagnetic directional valve II, an electromagnetic directional valve III, an electromagnetic directional valve IV, an electromagnetic directional valve V, an electromagnetic directional valve VI, a proportional overflow valve I, a proportional overflow valve II and a throttle valve, wherein the energy accumulator I, the electromagnetic directional valve I, the electromagnetic directional valve VI and the pressure transmitter I form a power source; the energy accumulator II, the electromagnetic directional valve II, the electromagnetic directional valve V and the pressure transmitter II form the other power source; and when one of the power sources is in use, the other one is used as a standby. The electro-hydraulic control system has the beneficial effects that structure is simple, efficiency is high, energy consumption is low, maintenance is convenient, the heat productivity of the gear pump is effectively reduced and the service life of equipment is prolonged, thus the electro-hydraulic control system has wide practicability.
Description
Technical field
The present invention relates to a kind of electrohydraulic control system, specifically is that a kind of downward belt conveyor disc brake apparatus is used electrohydraulic control system, belongs to the electrohydraulic control system applied technical field.
Background technology
At present, downward belt conveyor, particularly fully loaded downward belt conveyor material and load-transfer device in operational process can produce bigger sliding force; Cause the speed of load-transfer device more and more faster, when speed exceeds certain limit, very easily cause the damage of belt conveyer; Cause serious accident, on the other hand, because the inertia of material and load-transfer device; It is also more difficult that the peaceful conveying belt type conveyer of fortune is gone up in the parking of downward belt conveyor; Parking period is long, and then system's cal val is big, is prone to cause gas explosion during down-hole application in the colliery; Parking period is too short, and then the load-transfer device dynamic stress of bearing is bigger, very easily causes the generation of accidents such as broken belt.Therefore the stopping speed to downward belt conveyor also has strict demand, for above-mentioned reasons, and the equal configure dedicated brake equipment of downward belt conveyor that uses at present.
Brake equipment at present commonly used has two kinds of the sticking brake equipment of liquid and disc brake apparatus; Though the brake equipment of other employing different operating principle is also arranged,, is abandoned by the user just gradually because its result of use is unsatisfactory; The sticking brake equipment of liquid adopts the sticking transmission principle of liquid; The internal friction sheet is connected with drum shaft, and outside friction disc is connected with frame, realizes braking through the oil film thickness between outside friction disc in changing.This device not only structure is comparatively complicated; Make, cost of installation is higher, electric control system is also comparatively complicated, safeguards comparatively difficulty; The sticking brake equipment of what is more important liquid needs long braking time (more than the 60s) just can obtain comparatively desirable effect; Time, braking effect was poor in short-term, and general belt conveyer braking time requires in 30s, so the use occasion of the sticking brake equipment of liquid is also fewer and feweri.
By contrast; Disc brake apparatus is because simple in structure; Advantage such as easy to maintenance and obtain increasing application; But at present all to adopt the motor driven gear pump be that system provides pressure oil to the electrohydraulic control system of disc brake apparatus, do not make full use of the sliding force of material and load-transfer device in the downward belt conveyor operational process, is unfavorable for saving energy and reduce the cost; If the motor et out of order can't be worked thereby will cause the braking head can't open belt conveyer in addition.
Summary of the invention
Problem to above-mentioned prior art existence; The present invention provides a kind of downward belt conveyor disc brake apparatus to use electrohydraulic control system; Utilize material and load-transfer device sliding force driving gear pump that pressure oil is provided; Can guarantee the disc brake apparatus normal operation, thereby guarantee that belt conveyer normally moves, have energy-saving disc brake apparatus simple in structure, easy to maintenance, that efficient is high, energy consumption is low again and use electrohydraulic control system.
To achieve these goals; The present invention realizes through following technical scheme: a kind of downward belt conveyor disc brake apparatus is used electrohydraulic control system; Comprise driving drum of belt conveyor, braking head, brake disc and fuel tank, also comprise gear type pump, boost installation, pressure transformer I, pressure transformer II, energy storage I, energy storage II, solenoid directional control valve I, solenoid directional control valve II, solenoid directional control valve III, solenoid directional control valve IV, solenoid directional control valve V, solenoid directional control valve VI, proportional pressure control valve I, proportional pressure control valve II and flow regulating valve; Driving drum of belt conveyor is connected with the input shaft of boost installation; The output shaft of boost installation is connected with gear type pump; The oil outlet of gear type pump is connected with the pressure oil inlet of solenoid directional control valve V and solenoid directional control valve VI respectively; Be connected with the oil inlet of proportional pressure control valve II simultaneously; The oil outlet of proportional pressure control valve II is connected with fuel tank; The outlet of solenoid directional control valve V is connected with pressure transformer II, energy storage II and solenoid directional control valve II respectively, and the outlet of solenoid directional control valve VI is connected with pressure transformer I, energy storage I and solenoid directional control valve I respectively, and the energy storage I is connected with the oil cylinder ante-chamber of solenoid directional control valve II with the braking head through the solenoid directional control valve I respectively with the energy storage II.
The oil cylinder passing ratio by pass valve I of braking head is connected with fuel tank with the solenoid directional control valve III; The oil cylinder of braking head also is connected with fuel tank with flow regulating valve through the solenoid directional control valve IV simultaneously, and the pressure transformer I is connected with the oil inlet of energy storage I with the energy storage II respectively with the pressure transformer II; Solenoid directional control valve I, solenoid directional control valve II, solenoid directional control valve III, solenoid directional control valve V and solenoid directional control valve VI when dead electricity and oil circuit break off, connect with oil circuit when electric, the solenoid directional control valve IV is connected with oil circuit when dead electricity, gets when electric and the oil circuit disconnection.
Principle of work of the present invention is: gear type pump is connected with the belt conveyor ' s pulley axle through boost installation; Can utilize directly that material and load-transfer device downslide component driving gear pump are the energy storage topping up in the belt conveyer operational process; Belt conveyer also need not to consider the power needs of gear type pump when design; Utilize material and load-transfer device downslide component institute work that belt conveyer has also been played certain brake action simultaneously; Reduce the required power consumption of belt conveyer braking, started energy-saving and cost-reducing effect.
The present invention adopts energy storage as disc brake apparatus hydraulic efficiency pressure system propulsion source; Energy storage I, solenoid directional control valve I, solenoid directional control valve VI and pressure transformer I are formed a propulsion source; Energy storage II, solenoid directional control valve II, solenoid directional control valve V and pressure transformer II are formed another propulsion source; Two propulsion source the using and the reserved are launched another propulsion source a propulsion source insufficient pressure or when breaking down, and can guarantee the normal operation of belt conveyer.
The pressure of proportional pressure control valve II is the rated pressure value when giving the energy storage topping up; Topping up finishes back proportional pressure control valve II dead electricity; Pressure is its dead band pressure; Passing ratio by pass valve I reduces a braking inner oil cylinder working-pressure by needed rule during normal brake application; The speed of load-transfer device is reduced until parking according to certain rules, thereby guarantee the suffered dynamic stress minimum of parts such as load-transfer device and frame in the braking procedure, an inner oil cylinder is braked by system when sudden power pressure oil flows back to fuel tank through flow regulating valve; Regulate the braking time that the flow regulating valve openings of sizes can be adjusted disc brake apparatus, reduce the suffered dynamic stress of parts such as load-transfer device and frame in the braking procedure to a certain extent.
The invention has the beneficial effects as follows: simple in structure, easy to maintenance, efficient is high, and energy consumption is low, has effectively reduced the cal val of gear type pump, has prolonged the service life of equipment, has practicality widely.
Description of drawings
Fig. 1 is an agent structure scheme drawing of the present invention
Among the figure: 1, driving drum of belt conveyor, 2, the braking head, 3, brake disc, 4, the pressure transformer I, 5, the energy storage I; 6, solenoid directional control valve I, 7, the pressure transformer II, 8, the energy storage II, 9, the solenoid directional control valve II, 10, the proportional pressure control valve I; 11, solenoid directional control valve III, 12, the solenoid directional control valve IV, 13, fuel tank, 14, flow regulating valve, 15, the proportional pressure control valve II; 16, solenoid directional control valve V, 17, the solenoid directional control valve VI, 18, gear type pump, 19, boost installation.
The specific embodiment
To combine accompanying drawing that the present invention is further specified below.
As shown in Figure 1; A kind of downward belt conveyor disc brake apparatus is used electrohydraulic control system; Comprise driving drum of belt conveyor 1, braking 2, brake disc 3 and fuel tank 13, also comprise gear type pump 18, boost installation 19, pressure transformer I 4, pressure transformer II 7, energy storage I 5, energy storage II 8, solenoid directional control valve I 6, solenoid directional control valve II 9, solenoid directional control valve III 11, solenoid directional control valve IV 12, solenoid directional control valve V 16, solenoid directional control valve VI 17, proportional pressure control valve I 10, proportional pressure control valve II 15 and flow regulating valve 14; Driving drum of belt conveyor 1 is connected with the input shaft of boost installation 19; The output shaft of boost installation 19 is connected with gear type pump 18; The oil outlet of gear type pump 18 is connected with the pressure oil inlet of solenoid directional control valve V 16 and solenoid directional control valve VI 17 respectively; Be connected with the oil inlet of proportional pressure control valve II 15 simultaneously; The oil outlet of proportional pressure control valve II 15 is connected with fuel tank 13; The outlet of solenoid directional control valve V 16 is connected with pressure transformer II 7, energy storage II 8 and solenoid directional control valve II 9 respectively, and the outlet of solenoid directional control valve VI 17 is connected with pressure transformer I 4, energy storage I 5 and solenoid directional control valve I 6 respectively, and energy storage I 5 and energy storage II 8 are connected through the oil cylinder ante-chamber of solenoid directional control valve I 6 and solenoid directional control valve II 9 and braking 2 respectively.
The oil cylinder passing ratio by pass valve I 10 of braking 2 is connected with fuel tank 13 with solenoid directional control valve III 11; The oil cylinder of braking 2 also is connected with fuel tank 13 with flow regulating valve 14 through solenoid directional control valve IV 12 simultaneously, and pressure transformer I 4 is connected with the oil inlet of energy storage I 5 with energy storage II 8 respectively with pressure transformer II 7; Solenoid directional control valve I 6, solenoid directional control valve II 9, solenoid directional control valve III 11, solenoid directional control valve V 16 and solenoid directional control valve VI 17 when dead electricity and oil circuit break off; When electric with the oil circuit connection; Solenoid directional control valve IV 12 when dead electricity and oil circuit connect, when electric with the oil circuit disconnection.
Energy storage I 5, solenoid directional control valve I 6, solenoid directional control valve VI 17 and pressure transformer I 4 are formed a propulsion source; Energy storage II 8, solenoid directional control valve II 9, solenoid directional control valve V 16 and pressure transformer II 7 are formed another propulsion source; Two propulsion source the using and the reserved; Launch another propulsion source a propulsion source insufficient pressure or when breaking down, can guarantee the normal operation of belt conveyer.
Working process of the present invention is: before the belt conveyer running, solenoid directional control valve IV 12 electric, then by the inside oil cylinder voltage supply power oil of a propulsion source, make braking 2 open take-off the brake dish 3 to braking 2.
Behind the belt conveyer normal operation; Break off with a braking propulsion source that 2 inner oil cylinders are connected; Be connected with braking 2 an inner oil cylinder by another propulsion source, starting pressurize effect, driving drum of belt conveyor 1 is through 18 runnings of boost installation 19 driven gear pumps; Proportional pressure control valve II 15 is set at system's rated value at this moment, and the propulsion source lower to pressure fills pressure oil.
Proportional pressure control valve II 15 dead electricity after the oil-filled completion, pressure is its dead band pressure, in the working process; When causing the propulsion source pressure decay of participating in pressurize owing to reasons such as system leaks; This propulsion source of automatic cutout is launched another propulsion source, begins simultaneously to fill pressure oil to the lower propulsion source of pressure.
During normal brake application, solenoid directional control valve III 11 electric, electric control system changes the pressure of proportional pressure control valve I 10 according to certain rules, the positive pressure of braking 2 changes thereupon according to certain rules, thereby lock is lived brake disc 3 belt conveyer is stopped.
During the system sudden power; Solenoid directional control valve IV 12 dead electricity; The pressure oil of braking 2 an inner oil cylinder flows back to fuel tank 13 through solenoid directional control valve IV 12 and flow regulating valve 14, regulates the opening degree of flow regulating valve 14, and the parking period of belt conveyer is changed thereupon; Reduce parts such as load-transfer device and frame to a certain extent, the dynamic stress of in docking process, bearing.
Claims (1)
1. a downward belt conveyor disc brake apparatus is used electrohydraulic control system; Comprise driving drum of belt conveyor (1), braking head (2), brake disc (3) and fuel tank (13), it is characterized in that also comprising gear type pump (18), boost installation (19), pressure transformer I (4), pressure transformer II (7), energy storage I (5), energy storage II (8), solenoid directional control valve I (6), solenoid directional control valve II (9), solenoid directional control valve III (11), solenoid directional control valve IV (12), solenoid directional control valve V (16), solenoid directional control valve VI (17), proportional pressure control valve I (10), proportional pressure control valve II (15) and flow regulating valve (14); Driving drum of belt conveyor (1) is connected with the input shaft of boost installation (19); The output shaft of boost installation (19) is connected with gear type pump (18); The oil outlet of gear type pump (18) is connected with the pressure oil inlet of solenoid directional control valve V (16) and solenoid directional control valve VI (17) respectively; Be connected with the oil inlet of proportional pressure control valve II (15) simultaneously; The oil outlet of proportional pressure control valve II (15) is connected with fuel tank (13); The outlet of solenoid directional control valve V (16) is connected with pressure transformer II (7), energy storage II (8) and solenoid directional control valve II (9) respectively; The outlet of solenoid directional control valve VI (17) is connected with pressure transformer I (4), energy storage I (5) and solenoid directional control valve I (6) respectively; Energy storage I (5) is connected with the oil cylinder ante-chamber of solenoid directional control valve II (9) with braking head (2) through solenoid directional control valve I (6) respectively with energy storage II (8); The oil cylinder passing ratio by pass valve I (10) of braking head (2) is connected with fuel tank (13) with solenoid directional control valve III (11), and the oil cylinder of braking head (2) also is connected with fuel tank (13) with flow regulating valve (14) through solenoid directional control valve IV (12) simultaneously, and pressure transformer I (4) is connected with the oil inlet of energy storage I (5) with energy storage II (8) respectively with pressure transformer II (7).
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| Application Number | Priority Date | Filing Date | Title |
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| CN 201110152392 CN102295154B (en) | 2011-06-08 | 2011-06-08 | Electro-hydraulic control system for disc-type braking device of declining belt conveyor |
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| Application Number | Priority Date | Filing Date | Title |
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| CN 201110152392 CN102295154B (en) | 2011-06-08 | 2011-06-08 | Electro-hydraulic control system for disc-type braking device of declining belt conveyor |
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| CN102295154A CN102295154A (en) | 2011-12-28 |
| CN102295154B true CN102295154B (en) | 2012-12-26 |
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| CN103129919B (en) * | 2013-03-12 | 2015-05-20 | 太原理工大学 | Electro-hydraulic control system of disc type braking device of mine belt conveyor |
| CN104590823B (en) * | 2014-11-27 | 2017-02-22 | 中国矿业大学 | Disc -shaped braking system for downwards transportation belt type conveyor |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| US3872670A (en) * | 1973-05-02 | 1975-03-25 | Caterpillar Tractor Co | Selectively actuatable shock absorbing system for an implement control circuit |
| DE3438396A1 (en) * | 1984-10-19 | 1986-04-30 | Rudolf Hausherr & Söhne GmbH & Co KG, 4322 Sprockhövel | Circuit for intermittently operating, hydraulically driven equipment or machines |
| CN85200452U (en) * | 1985-04-01 | 1985-12-20 | 机械工业部北京起重运输机械研究所 | Brake equipment of down-conveying belt conveyor |
| CN201305334Y (en) * | 2008-11-21 | 2009-09-09 | 徐州五洋科技有限公司 | Hydraulic control system of tension device for belt conveyor |
| CN201391493Y (en) * | 2009-04-23 | 2010-01-27 | 福建万新发电设备有限公司 | High-pressure energy accumulation hydraulic operation device |
| CN202147996U (en) * | 2011-06-08 | 2012-02-22 | 徐州五洋科技有限公司 | Electric-hydraulic control system for disc braking device of downward belt conveyor |
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Address after: 221000 No. 9006-1 Kunlun Avenue, Copper Mt. New District, Jiangsu, Xuzhou Applicant after: XUZHOU WUYANG TECHNOLOGY Co.,Ltd. Address before: 221000 No. 9006-1 Kunlun Avenue, Copper Mt. New District, Jiangsu, Xuzhou Applicant before: Xuzhou Wuyang Technology Co.,Ltd. |
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Address after: 221006 East of Yinshan Road and North of the Pearl River Road, Tongshan New District, Xuzhou City, Jiangsu Province Patentee after: JIANGSU WUYANG PARKING INDUSTRY GROUP Co.,Ltd. Address before: No. 9006-1, Kunlun Avenue, Tongshan New District, Xuzhou City, Jiangsu Province, 221000 Patentee before: XUZHOU WUYANG TECHNOLOGY Co.,Ltd. |