CN202880333U - Braking system used for downward belt conveyor - Google Patents
Braking system used for downward belt conveyor Download PDFInfo
- Publication number
- CN202880333U CN202880333U CN 201220571994 CN201220571994U CN202880333U CN 202880333 U CN202880333 U CN 202880333U CN 201220571994 CN201220571994 CN 201220571994 CN 201220571994 U CN201220571994 U CN 201220571994U CN 202880333 U CN202880333 U CN 202880333U
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- brake
- belt conveyor
- oil
- directional control
- control valve
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- Expired - Fee Related
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Abstract
The utility model discloses a double-brake system used for a downward belt conveyor. The double-brake system used for the downward belt conveyor comprises a belt conveyor driving drum shaft 1, a hydro-viscous brake 4, a thrust oil cylinder 8, a shaft 9 of the hydro-viscous brake, a throttle valve I 14, a lubricating oil pump 18, a pressure oil pump 21, a belt conveyor reducer high-speed shaft 23, an oil tank 26 and a throttle valve II 27, and the double-brake system used for the downward belt conveyor further comprises a brake disc 2 of a disc brake, a brake head 3 of the disc brake, a reducing valve 11, a hydraulic control reversing valve 13, a magnetic exchange valve I 16, a magnetic exchange valve II 25, a hydraulic control reversing valve II 28, a hydraulic control reversing valve III 29 and a magnetic exchange valve III 30. According to the double-brake system used for the downward belt conveyor, the downward belt conveyor uses the hydro-viscous brake 4 as a braking device, at the same time, the disc brake is added and combined with the common effects of the lubricating oil pump 18 and the pressure oil pump 21, the downward belt conveyor can reach a braking effect under normal conditions and power-off conditions, run-away accidents caused by brake failure are avoided, reliability of the braking system used for the downward belt conveyor is further improved.
Description
Technical field
The utility model 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 purpose of this utility model is the weak point that overcomes 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 adopted in the utility model 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 the by pass valve I, be installed in parallel the solenoid directional control valve I with the 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 the by pass valve II, be installed in parallel the solenoid directional control valve II with the by pass valve II, the oil pressure pump oil outlet is equipped with the 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, the solenoid directional control valve III is installed on left road, oil pressure pump is fuel-displaced to lead to the Disk Brake head via the 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 utility model system 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 the utility model structural representation.
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, the by pass valve I, 13, the pilot operated directional control valve I, 14, the flow regulating valve I, 15, cooling vessel, 16, the solenoid directional control valve I, 17, the fine filter I, 18, lubricating pump, 19, the coarse filter I, 20, the fine filter II, 21, oil pressure pump, 22, the coarse filter II, 23, belt conveyer reductor high speed shaft, 24, the by pass valve II, 25, the solenoid directional control valve II, 26, fuel tank, 27, the flow regulating valve II, 28, the pilot operated directional control valve II, 29, the pilot operated directional control valve III, 30, the solenoid directional control valve III.
The specific embodiment
The utility model is described in further detail 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 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; 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 I 12, be installed in parallel solenoid directional control valve I 16 with by pass valve I 12, 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 II 24, be installed in parallel solenoid directional control valve II 25 with by pass valve II 24, oil pressure pump 21 oil outlets are equipped with pilot operated directional control valve III 29, oil circuit is divided into left and right sides two-way after the pilot operated directional control valve III 29, solenoid directional control valve III 30 is installed on left road, oil pressure pump 21 is fuel-displaced to lead to Disk Brake head 3 via solenoid directional control valve III 30, oil circuit between pilot operated directional control valve III 29 and solenoid directional control valve III 30 is provided with along separate routes, by being installed, pilot operated directional control valve II 28 and flow regulating valve II 27 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 III 29 and propelling cylinder 8 is provided with along separate routes, is connected with fuel tank 26 by pilot operated directional control valve I 13 and flow regulating valve I 14 are installed.
In the course of the work, when downward belt conveyor works, solenoid directional control valve I 16, solenoid directional control valve II 25, solenoid directional control valve III 30 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 I 16, solenoid directional control valve II 25, solenoid directional control valve III 30 equal dead electricity, 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 III 29 places connect, and the oil circuit at pilot operated directional control valve I 13 and pilot operated directional control valve II 28 places 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 I 13 and pilot operated directional control valve II 28 are connected 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 utility model, preferred, lubricating pump 18 oil inlets and oil outlet are separately installed with coarse filter I 19 and fine filter I 17, and the oil inlet of oil pressure pump 21 and oil outlet also are separately installed with coarse filter II 22 and fine filter II 20.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 utility model 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 driving drum of belt conveyor axle (1), liquid glues drg (4), propelling cylinder (8), liquid glues brake operating shaft (9), 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), two oil circuits about pilot operated directional control valve III (29) connects, left road is connected with Disk Brake head (3) by solenoid directional control valve III (30) is installed, be provided with on the oil circuit between pilot operated directional control valve III (29) and the solenoid directional control valve III (30) along separate routes, by being installed, pilot operated directional control valve II (28) 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, be provided with on the oil circuit between pilot operated directional control valve III (29) and the propelling cylinder (8) along separate routes, be connected with fuel tank (26) by pilot operated directional control valve I (13) and flow regulating valve I (14) are installed.
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 |
|---|---|---|---|
| CN 201220571994 CN202880333U (en) | 2012-10-31 | 2012-10-31 | Braking system used for downward belt conveyor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220571994 CN202880333U (en) | 2012-10-31 | 2012-10-31 | Braking system used for downward belt conveyor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202880333U true CN202880333U (en) | 2013-04-17 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220571994 Expired - Fee Related CN202880333U (en) | 2012-10-31 | 2012-10-31 | Braking system used for downward belt conveyor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202880333U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102897490A (en) * | 2012-10-31 | 2013-01-30 | 中国矿业大学 | Braking system for downward belt conveyor |
| CN105065343A (en) * | 2015-08-19 | 2015-11-18 | 华润水泥技术研发有限公司 | Hydraulic control system and method for disc brake of descending adhesive tape machine |
| CN109751231A (en) * | 2019-02-21 | 2019-05-14 | 中国长江电力股份有限公司 | A kind of pressure oil pump electrical control gear and method |
-
2012
- 2012-10-31 CN CN 201220571994 patent/CN202880333U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102897490A (en) * | 2012-10-31 | 2013-01-30 | 中国矿业大学 | Braking system for downward belt conveyor |
| CN102897490B (en) * | 2012-10-31 | 2015-04-08 | 中国矿业大学 | Braking system for downward belt conveyor |
| CN105065343A (en) * | 2015-08-19 | 2015-11-18 | 华润水泥技术研发有限公司 | Hydraulic control system and method for disc brake of descending adhesive tape machine |
| CN109751231A (en) * | 2019-02-21 | 2019-05-14 | 中国长江电力股份有限公司 | A kind of pressure oil pump electrical control gear and method |
| CN109751231B (en) * | 2019-02-21 | 2023-11-21 | 中国长江电力股份有限公司 | Electric control device and method for pressure oil pump |
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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: 20130417 Termination date: 20131031 |