CN102897490A - Braking system for downward belt conveyor - Google Patents
Braking system for downward belt conveyor Download PDFInfo
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- CN102897490A CN102897490A CN2012104274904A CN201210427490A CN102897490A CN 102897490 A CN102897490 A CN 102897490A CN 2012104274904 A CN2012104274904 A CN 2012104274904A CN 201210427490 A CN201210427490 A CN 201210427490A CN 102897490 A CN102897490 A CN 102897490A
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- belt conveyor
- control valve
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Abstract
The invention discloses a dual-braking system for a downward belt conveyor. The dual-braking system comprises a belt conveyor driving drum shaft 1, a hydro-viscous brake 4, a propulsion oil cylinder 8, a hydro-viscous brake shaft 9, a first throttling valve 14, a lubricating oil pump 18, a pressure oil pump 21, a belt conveyor speed reducer high-speed shaft 23, an oil tank 26, a second throttling valve 27, a disc brake braking disc 2, a disc brake braking head 3, a pressure reducing valve 11, a liquid control reversing valve 13, a first electromagnetic reversing valve 16, a second electromagnetic reversing valve 25, a second liquid control reversing valve 28, a third liquid control reversing valve 29 and a third electromagnetic reversing valve 30. The downward belt conveyor uses the hydro-viscous brake 4 as a braking device, meanwhile, a disc brake is added, the combined effect of the lubricating oil pump 18 and the pressure oil pump 21 is combined, the downward belt conveyor is enabled to respectively reach the braking effect under the normal condition and the power failure condition, the occurrence of runaway accidents caused by braking failure is avoided, and the reliability of the dual-braking system for the downward belt conveyor is further improved.
Description
Technical field
The present invention relates to a kind of brake system for downward belt conveyor.
Background technology
Downward belt conveyor is a kind of feedway that material is transported to lower from eminence, because it has and can take full advantage of relief feature, reduce the characteristics such as equipment investment, thereby more and more be applied to a plurality of fields such as underworkings, grass transport systems, field of opencast mining and ore dressing plant in mine.
Can produce two aspect problems in the downward belt conveyor working process: the one, can produce the hypervelocity phenomenon in the transportation, and speed is more and more faster, final belt conveyer is out of control, causes runaway accident to occur; The 2nd, if brake system can not respond fast when having a power failure suddenly in the course of the work, the material on the load-transfer device can glide by driving conveying belt, and speed is more and more faster, also can cause runaway accident to occur.Driving also may cause personal injury except causing heavy economic losses.
The brake of bottom-loading conveyer that uses at present has two kinds: the one, and plate disc brake, the 2nd, liquid glues drg.Plate disc brake is converted into heat energy to the kinetic energy of belt conveyer fully when braking, easily cause the brake disc temperature to raise when braking time is long, causes the fire damp blast; The principle of work of the sticking drg of liquid is based on law of friction in the newton, and namely between two friction linings that relative moving speed arranged, shearing stress is directly proportional with kinetic viscosity and velocity of shear, is inversely proportional to oil film thickness.When needing braking, control system is sent speed-slackening signal, the controller basis changes from the oil pressure of the signal control electro-hydraulic proportional valve of tachogen, make piston overcome the effect of spring force, it is mobile vertically to promote active friction plate, changes the gap between active friction plate and the friction pair dish, like this, change the thickness of oil film according to the difference of actual speed and setting speed, thereby reach the effect of braking.Although the sticking drg of liquid has overcome the uncontrollable shortcoming of disc type brake actuator temperature, it needs electrical control, and its braking time can't be controlled automatically under the operating mode that has a power failure suddenly.
Summary of the invention
The objective of the invention is to overcome the weak point of prior art, provide a kind of downward belt conveyor that can conveniently make to realize that under the operating modes such as hypervelocity and suddenly power failure belt conveyer safely, steadily slows down or the requirement of braking, have again the advantages such as compact conformation, efficient height, smooth running, simultaneously the cost brake system that is used for downward belt conveyor low, easy to maintenance.
To achieve these goals, the technical solution used in the present invention is: a kind of brake system for downward belt conveyor comprises driving drum of belt conveyor axle, the sticking drg of liquid, propelling cylinder, the sticking brake operating shaft of liquid, flow regulating valve I, lubricating pump, oil pressure pump, belt conveyer reductor high speed shaft, fuel tank and flow regulating valve II; Wherein the body skin of the sticking drg of liquid is fixed in ground, the body skin of the sticking drg of outside friction disc and liquid links, the sticking brake operating shaft of inner attrition piece and liquid passes through splined, between per two outside friction discs the disk spring group is installed, plate disc brake also is set in the system, wherein brake disk connects by coupler with the driving drum of belt conveyor axle, the Disk Brake head is fixed in ground by frame, and the sticking brake operating shaft of liquid connects with the axle of brake disk by coupler; Belt conveyer reductor high speed shaft is two shafts, one end and motor or speed regulation device link, the other end is by being connected with lubricating pump and oil pressure pump by coupler, lubricating pump and oil pressure pump are twin pump, wherein the lubricating pump oil outlet is equipped with by pass valve I, be installed in parallel solenoid directional control valve I with by pass valve I, the fuel-displaced friction lining group that directly enters the sticking drg of liquid of lubricating pump oil outlet is lubricated, used lubricating oil flows back to fuel tank by the sticking drg top of liquid lubricating oil return pipe, cooling vessel is arranged on the pipeline of lubricating oil return pipe, and used lubricating oil is cooled off; The oil inlet of oil pressure pump is equipped with by pass valve II, be installed in parallel solenoid directional control valve II with by pass valve II, the oil pressure pump oil outlet is equipped with pilot operated directional control valve III, oil circuit is divided into left and right sides two-way after the pilot operated directional control valve III, solenoid directional control valve III is installed on left road, oil pressure pump is fuel-displaced to lead to the Disk Brake head via solenoid directional control valve III, oil circuit between pilot operated directional control valve III and solenoid directional control valve III is provided with along separate routes, by being installed, pilot operated directional control valve II and flow regulating valve II be connected with fuel tank, right wing is equipped with reducing valve, the fuel-displaced propelling cylinder that leads to the sticking drg of liquid via reducing valve of oil pressure pump, oil circuit between pilot operated directional control valve III and propelling cylinder is provided with along separate routes, is connected with fuel tank by pilot operated directional control valve I and flow regulating valve I are installed.
Further, lubricating pump oil inlet and oil outlet are separately installed with coarse filter I and fine filter I.
Further, the oil inlet of oil pressure pump and oil outlet are separately installed with coarse filter II and fine filter II.
In the situation that in the downward belt conveyor working process, occurs suddenly to have a power failure, solenoid directional control valve in the system of the present invention all has a power failure, the lubricating oil that lubricating pump provides enters the sticking brake bush group of liquid and cools off, the pilot operated directional control valve in oil pressure pump delivery pressure control exit is connected oil circuit, the pilot operated directional control valve that control links to each other with flow regulating valve disconnects the place oil circuit, provide simultaneously pressure oil to enter the propelling cylinder of Disk Brake head and the sticking drg of liquid, on the one hand brake head is opened, be that plate disc brake is not worked, the outside friction disc and the inner attrition piece that promote on the other hand the sticking drg of liquid begin to engage, play brake action, the sticking drg of liquid can be taken away the heat that produces by lubricating oil in braking procedure, thereby has avoided the gas explosion that causes because slip velocity is too fast; After inferior belt conveyer speed reduces to a certain degree, system pressure can descend, the Disk Brake head begins to compress brake disc, further downward belt conveyor is braked, the injures and deaths of runaway accident generation and operating personal have been avoided, and compact conformation, easy to use, further improved the reliability of downward belt conveyor with brake system.
Description of drawings
Fig. 1 is structural representation of the present invention.
Among the figure: 1, the driving drum of belt conveyor axle, 2, brake disk, 3, the Disk Brake head, 4, liquid glues drg, 5, outside friction disc, 6, inner attrition piece, 7, the disk spring group, 8, propelling cylinder, 9, liquid glues brake operating shaft, 10, the lubricating oil return pipe, 11, reducing valve, 12, by pass valve I, 13, pilot operated directional control valve I, 14, flow regulating valve I, 15, cooling vessel, 16, solenoid directional control valve I, 17, fine filter I, 18, lubricating pump, 19, coarse filtration I I, 20, fine filter II, 21, oil pressure pump, 22, coarse filter II, 23, belt conveyer reductor high speed shaft, 24, by pass valve II, 25, solenoid directional control valve II, 26, fuel tank, 27, flow regulating valve II, 28, pilot operated directional control valve II, 29, pilot operated directional control valve III, 30, solenoid directional control valve III.
The specific embodiment
The invention will be further described below in conjunction with accompanying drawing.
As shown in Figure 1, a kind of brake system for downward belt conveyor comprises driving drum of belt conveyor axle 1, the sticking drg 4 of liquid, propelling cylinder 8, the sticking brake operating shaft 9 of liquid, flow regulating valve I14, lubricating pump 18, oil pressure pump 21, belt conveyer reductor high speed shaft 23, fuel tank 26 and flow regulating valve II27; Wherein the body skin of the sticking drg 4 of liquid is fixed in ground, outside friction disc 5 links with the body skin of the sticking drg 4 of liquid, inner attrition piece 6 passes through splined with the sticking brake operating shaft 9 of liquid, between per two outside friction discs disk spring group 7 is installed, plate disc brake also is set in the system, wherein brake disk 2 and driving drum of belt conveyor axle 1 connect by coupler, Disk Brake head 3 is fixed in ground by frame, and the sticking brake operating shaft 9 of liquid connects by the axle of coupler with brake disk 2; Belt conveyer reductor high speed shaft 23 is two shafts, one end and motor or speed regulation device link, the other end is by being connected with lubricating pump 18 and oil pressure pump 21 by coupler, lubricating pump 18 is twin pump with oil pressure pump 21, wherein lubricating pump 18 oil outlets are equipped with by pass valve I12, be installed in parallel solenoid directional control valve I16 with by pass valve I12, the fuel-displaced friction lining group that directly enters the sticking drg 4 of liquid of lubricating pump 18 oil outlets is lubricated, used lubricating oil flows back to fuel tank 26 by the sticking drg 4 top lubricating oil return pipes 10 of liquid, cooling vessel 15 is arranged on the pipeline of lubricating oil return pipe 10, and used lubricating oil is cooled off; The oil outlet of oil pressure pump 21 is equipped with by pass valve II24, be installed in parallel solenoid directional control valve II25 with by pass valve II24, oil pressure pump 21 oil outlets are equipped with pilot operated directional control valve III29, oil circuit is divided into left and right sides two-way after the pilot operated directional control valve III29, solenoid directional control valve III30 is installed on left road, oil pressure pump 21 is fuel-displaced to lead to Disk Brake head 3 via solenoid directional control valve III30, oil circuit between pilot operated directional control valve III29 and solenoid directional control valve III30 is provided with along separate routes, by being installed, pilot operated directional control valve II28 and flow regulating valve II27 be connected with fuel tank 26, right wing is equipped with reducing valve 11, the oil pressure pump 21 fuel-displaced propelling cylinders 8 that lead to the sticking drg 4 of liquid via reducing valve 11, oil circuit between pilot operated directional control valve III29 and propelling cylinder 8 is provided with along separate routes, is connected with fuel tank 26 by pilot operated directional control valve I13 and flow regulating valve I14 are installed.
In the course of the work, when downward belt conveyor works, solenoid directional control valve I16, solenoid directional control valve II25, solenoid directional control valve III30 all electric, lubricating pump 18 and oil pressure pump 21 unloadings, the pressure oil that the pumping plant of simultaneously plate disc brake self configuration provides can not enter hydraulic efficiency pressure system shown in Figure 1 yet.
When the situation of downward belt conveyor hypervelocity or suddenly power failure occurring, solenoid directional control valve I16, solenoid directional control valve II25, the equal dead electricity of solenoid directional control valve III30, the lubricating oil that lubricating pump 18 provides enters the friction lining group of the sticking drg 4 of liquid, then flow back to fuel tank through lubricating oil return pipe 10, cool off through cooling vessel 15 before the oil sump tank.The pressure oil that oil pressure pump 21 provides at first makes the oil circuit at pilot operated directional control valve III29 place connect, and the oil circuit at pilot operated directional control valve I13 and pilot operated directional control valve II28 place disconnects, and then pressure oil enters respectively oil cylinder and the propelling cylinder 8 of Disk Brake head 3.The pressure oil that enters Disk Brake head 3 oil cylinders makes Disk Brake head 3 stay open state, and namely plate disc brake is not braked, and the pressure oil promotion outside friction disc 5 and the inner attrition piece 6 that enter propelling cylinder 8 are bonded with each other, and implement braking.The experiment proved that, it is more that downward belt conveyor speed exceeds normal speed, and the pressure oil pressure that oil pressure pump 21 provides can be higher, thereby outside friction disc 5 and inner attrition piece 6 are bonded with each other tighter, be that the lock torque that provides of the sticking drg 4 of liquid is larger, the belt conveying motor speed descends can be faster.
When downward belt conveyor speed is down to a certain degree, the pressure oil pressure decreased that oil pressure pump 21 provides, the sticking drg of liquid provides lock torque to begin to reduce, and beginning to compress 2 pairs of downward belt conveyors of brake disk, brakes on Disk Brake head 3, pilot operated directional control valve I13 and pilot operated directional control valve II28 connect the place oil circuit simultaneously, and the fluid in Disk Brake head 3 and the propelling cylinder 8 flows back to fuel tank.
In the present invention, preferred, lubricating pump 18 oil inlets and oil outlet are separately installed with coarse filter I19 and fine filter I17, and the oil inlet of oil pressure pump 21 and oil outlet also are separately installed with coarse filter II22 and fine filter II20.In practical work process, after lubricating pump 18 and oil pressure pump 21 long-term works, can pile up in various degree the dregs of fat and other impurity at oil inlet and oil outlet place, hindered the conveying of normal lubricating oil and pressure oil, increased after the thickness filter, can filter the dregs of fat and other impurity in the course of the work, thereby the conveying that guarantees lubricating oil and pressure oil is clear and coherent.Equally, oil inlet and oil outlet increase filtering net or other filtering installation at lubricating pump 18 and oil pressure pump 21 can reach identical effect equally.
In conjunction with working process, the present invention is by when using the sticking drg of liquid 4 as brake equipment at downward belt conveyor, increase plate disc brake, in conjunction with lubricating pump 18 and oil pressure pump 21 combineds action, guaranteed downward belt conveyor under normal circumstances with situation about having a power failure under, can reach the effect of braking, the runaway accident of avoiding occurring because of brake failure occurs, further improve the reliability of downward belt conveyor with brake system, had widely market outlook.
Claims (3)
1. brake system that is used for downward belt conveyor, comprise the sticking drg (4) of driving drum of belt conveyor axle (1), liquid, propelling cylinder (8), the sticking brake operating shaft (9) of liquid, flow regulating valve I(14), lubricating pump (18), oil pressure pump (21), belt conveyer reductor high speed shaft (23), fuel tank (26) and flow regulating valve II(27), the body skin that liquid glues drg (4) is fixed in ground, outside friction disc (5) links with the body skin of the sticking drg (4) of liquid, and inner attrition piece (6) passes through splined with the sticking brake operating shaft (9) of liquid; Lubricating pump (18) is twin pump with oil pressure pump (21), reductor high speed shaft (23) by coupler and belt conveyer links, lubricating pump (18) oil outlet is equipped with by pass valve I(12), lubricating pump (18) oil outlet is connected with the friction lining group of the sticking drg (4) of liquid, the friction lining group that liquid glues drg (4) is connected with fuel tank (26) by sticking drg (4) the top lubricating oil return pipe (10) of liquid, cooling vessel (15) is arranged on the lubricating oil return pipe (10), the oil outlet of oil pressure pump (21) is equipped with by pass valve II(24), the oil outlet of oil pressure pump (21) is connected with the propelling cylinder (8) of the sticking drg (4) of liquid, it is characterized in that, also comprise brake disk (2) and Disk Brake head (3), described brake disk (2) connects by coupler with driving drum of belt conveyor axle (1), described Disk Brake head (3) is fixed in ground by frame, and liquid glues brake operating shaft (9) and connects by the axle of coupler with brake disk 2; The by pass valve I(12 that described lubricating pump (18) oil outlet is installed) has been installed in parallel solenoid directional control valve I(16), the by pass valve II(24 that described oil pressure pump (21) oil inlet is installed) has been installed in parallel solenoid directional control valve II(25), described oil pressure pump (21) oil outlet is equipped with pilot operated directional control valve III(29), pilot operated directional control valve III(29) two oil circuits about the connection, left road is by installing solenoid directional control valve III(30) be connected with Disk Brake head (3), pilot operated directional control valve III(29) and solenoid directional control valve III(30) between oil circuit on be provided with along separate routes, by pilot operated directional control valve II(28 is installed) and flow regulating valve II(27) be connected with fuel tank (26), right wing is connected with the propelling cylinder (8) of the sticking drg (4) of liquid by reducing valve (11) is installed, pilot operated directional control valve III(29) and be provided with on the oil circuit between the propelling cylinder (8) along separate routes, by pilot operated directional control valve I(13 is installed) and flow regulating valve I(14) be connected with fuel tank (26).
2. a kind of brake system for downward belt conveyor according to claim 1 is characterized in that, described lubricating pump (18) oil inlet and oil outlet are separately installed with coarse filter I (19) and fine filter I (17).
3. a kind of brake system for downward belt conveyor according to claim 1 is characterized in that, the oil inlet of described oil pressure pump (21) and oil outlet are separately installed with coarse filter II (22) and fine filter II (20).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210427490.4A CN102897490B (en) | 2012-10-31 | 2012-10-31 | Braking system for downward belt conveyor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210427490.4A CN102897490B (en) | 2012-10-31 | 2012-10-31 | Braking system for downward belt conveyor |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102897490A true CN102897490A (en) | 2013-01-30 |
| CN102897490B CN102897490B (en) | 2015-04-08 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210427490.4A Expired - Fee Related CN102897490B (en) | 2012-10-31 | 2012-10-31 | Braking system for downward belt conveyor |
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| Country | Link |
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| CN (1) | CN102897490B (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103129919A (en) * | 2013-03-12 | 2013-06-05 | 太原理工大学 | Electro-hydraulic control system of disc type braking device of mine belt conveyor |
| CN104590823A (en) * | 2014-11-27 | 2015-05-06 | 中国矿业大学 | Disc -shaped braking system for downwards transportation belt type conveyor |
| CN109353759A (en) * | 2018-10-17 | 2019-02-19 | 山东科技大学 | The double mode driving of belt conveyor can brake apparatus |
| CN112697453A (en) * | 2020-12-07 | 2021-04-23 | 山东百海逸机电股份有限公司 | Disc type brake device test bed and test method thereof |
| CN114060332A (en) * | 2021-12-02 | 2022-02-18 | 中煤科工集团重庆研究院有限公司 | Anti-deviation crawler walking hydraulic system |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| 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 |
| CN85200453U (en) * | 1985-04-01 | 1985-12-20 | 机械工业部北京起重运输机械研究所 | Explosion-proof brake equipment of dowm-conveying belt conveyor |
| CN87206404U (en) * | 1987-04-17 | 1988-04-06 | 中国矿业学院 | Braking device |
| DE3320504C1 (en) * | 1983-06-07 | 1988-12-22 | Alfred 5940 Lennestadt Tüschen | Belt band conveyor, especially for backwards conveying in inclined sections |
| CN1415509A (en) * | 2002-11-13 | 2003-05-07 | 太原理工大学 | Hydraulic arrester with capabilities of speed adjustment and soft braking |
| 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 |
| CN202880333U (en) * | 2012-10-31 | 2013-04-17 | 中国矿业大学 | Braking system used for downward belt conveyor |
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2012
- 2012-10-31 CN CN201210427490.4A patent/CN102897490B/en not_active Expired - Fee Related
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3320504C1 (en) * | 1983-06-07 | 1988-12-22 | Alfred 5940 Lennestadt Tüschen | Belt band conveyor, especially for backwards conveying in inclined sections |
| 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 |
| CN85200453U (en) * | 1985-04-01 | 1985-12-20 | 机械工业部北京起重运输机械研究所 | Explosion-proof brake equipment of dowm-conveying belt conveyor |
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| CN1415509A (en) * | 2002-11-13 | 2003-05-07 | 太原理工大学 | Hydraulic arrester with capabilities of speed adjustment and soft braking |
| 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 |
| CN202880333U (en) * | 2012-10-31 | 2013-04-17 | 中国矿业大学 | Braking system used for downward belt conveyor |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103129919A (en) * | 2013-03-12 | 2013-06-05 | 太原理工大学 | Electro-hydraulic control system of disc type braking device of mine belt conveyor |
| 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 |
| CN104590823A (en) * | 2014-11-27 | 2015-05-06 | 中国矿业大学 | Disc -shaped braking system for downwards transportation belt type conveyor |
| CN109353759A (en) * | 2018-10-17 | 2019-02-19 | 山东科技大学 | The double mode driving of belt conveyor can brake apparatus |
| CN112697453A (en) * | 2020-12-07 | 2021-04-23 | 山东百海逸机电股份有限公司 | Disc type brake device test bed and test method thereof |
| CN114060332A (en) * | 2021-12-02 | 2022-02-18 | 中煤科工集团重庆研究院有限公司 | Anti-deviation crawler walking hydraulic system |
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| CN102897490B (en) | 2015-04-08 |
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