CN202336386U - Chain jumping and chain scission protector - Google Patents
Chain jumping and chain scission protector Download PDFInfo
- Publication number
- CN202336386U CN202336386U CN2011204912855U CN201120491285U CN202336386U CN 202336386 U CN202336386 U CN 202336386U CN 2011204912855 U CN2011204912855 U CN 2011204912855U CN 201120491285 U CN201120491285 U CN 201120491285U CN 202336386 U CN202336386 U CN 202336386U
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- Prior art keywords
- chain
- protection device
- jumping
- scraper plate
- shallow slot
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- Expired - Lifetime
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- 230000009191 jumping Effects 0.000 title claims abstract description 29
- 230000001012 protector Effects 0.000 title abstract 4
- 238000012668 chain scission Methods 0.000 title abstract 3
- 238000012544 monitoring process Methods 0.000 claims abstract description 20
- 238000013459 approach Methods 0.000 claims abstract description 5
- 229910000831 Steel Inorganic materials 0.000 claims description 7
- 239000010959 steel Substances 0.000 claims description 7
- 239000003082 abrasive agent Substances 0.000 claims description 6
- 238000009434 installation Methods 0.000 claims description 2
- 238000012423 maintenance Methods 0.000 abstract description 8
- 238000004519 manufacturing process Methods 0.000 abstract description 3
- 230000009471 action Effects 0.000 description 4
- 238000010586 diagram Methods 0.000 description 4
- 230000001681 protective effect Effects 0.000 description 4
- 239000000725 suspension Substances 0.000 description 4
- 239000003245 coal Substances 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 230000007257 malfunction Effects 0.000 description 2
- 230000007246 mechanism Effects 0.000 description 2
- 238000007665 sagging Methods 0.000 description 2
- 235000008331 Pinus X rigitaeda Nutrition 0.000 description 1
- 235000011613 Pinus brutia Nutrition 0.000 description 1
- 241000018646 Pinus brutia Species 0.000 description 1
- 230000002146 bilateral effect Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000002950 deficient Effects 0.000 description 1
- 230000006866 deterioration Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000008676 import Effects 0.000 description 1
- 229910052500 inorganic mineral Inorganic materials 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 239000011707 mineral Substances 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
- 238000012216 screening Methods 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
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Abstract
The utility model provides a chain jumping and chain scission protector for a shallow slot scrapper. Each side of the shallow slot scrapper is provided with a chain, the shallow slot scrapper comprises a head pulley, a follower pulley and a tail pulley, the chains extend from the head pulley and reach the tail pulley via the follower pulley, a stationary shaft is installed at the position of the head pulley, a shaft sleeve capable of rotating around the stationary shaft freely is installed on the stationary shaft. The chain jumping and chain scission protector comprises a feeler lever with one end fixed to the shaft sleeve and the other end abutting against the chains, and a monitoring system which consists of two approach switches connected with one another in series. Each approach switch is near the stationary shaft at each side of the shallow slot scrapper. The protector of the utility model is simple to manufacture and sensitive and reliable to use, the daily maintenance load is small and the maintenance is convenient.
Description
Technical field
The utility model relates to a kind of jumping chain chain breakage protection device that is used for shallow slot scraper plate machine.
Background technology
In the industry of colliery, often need carry out sorting to mineral, a kind of important screening installation that is adopted is the shallow slot heavy-media separator, this separator is accomplished assorting room by density by suspension in gravitational field.In this course, raw coal feeds from dense media shallow-tank separator material feeding end, and suspension imports from feed chute below, forms horizontal flow and upwelling to carry out sorting.Float coal overflows along locating nature with horizontal flow to overflow, and heavy cash sinks down into the sorting trench bottom and is promoted to the top by shallow slot scraper plate machine and discharges through chute.
Shallow slot scraper plate machine live load is big, wearing and tearing and corrosion situation are serious, is shallow slot medium separator maximum trouble point aborning.Traditional shallow slot scraper plate machine can't receive sensitive reliable protection; Also can't in time find scraper plate machine fault and the parking of locking in time; Cause fault constantly to be aggravated easily, until critical conditions occurring, for example bilateral chain rupture; Chain, scraper plate, material all are deposited in the sorting trench bottom, and perhaps suspension can't be emitted.Until just locking parking of scraper plate machine this moment.If the staff just begins to handle this type of fault at this moment, not only waste time and energy, and have very big potential safety hazard.
Fig. 1 shows the fast stall protection structure of owing of existing shallow slot scraper plate machine.As shown in Figure 1, this is owed fast stall protection structure and is made up of with speed measuring device two parts the rotating speed test point (that is sensor block) 101 that is installed on the shallow slot scraper plate machine tugboat axle 100.Be fixed on sensor block 101 on the tugboat axle 100 along with tugboat axle 100 rotates together, speed measuring device is by constituting near the switch 102 and the time relay, certainly, and also can be by pulse signal directly being transferred to higher level's monitoring system near switch 102.Speed measuring device is fixed on the support.Rotation along with sensor block 101; To sense corresponding rotating speed near switch 102; Speed measuring device just is transferred to the PLC monitoring system with the rate signal that senses thus; Judge according to this rate signal whether needs are owed fast stall locking to scraper plate machine tugboat axle 100 by the PLC program, as be judged to be " being ", then stop the work of shallow slot scraper plate machine.
As indicated above, shallow slot scraper plate machine is in service to occur catastrophe failure such as chain rupture easily, therefore need on the scraper plate machine, chain breakage protection device be set.Existing shallow slot scraper plate machine chain breakage protection device by the rotation touching lever on fixed axis, the axle, be fixed on monitoring sheet and the checkout gear of rotation on the touching lever and form.In shallow slot scraper plate machine normal operation process, evenly spaced link plate is with fixed frequency touching rotation touching lever.In case the touching frequency between rotation touching lever and the link plate changes, then take the corresponding protection action.
Yet existing shallow slot scraper plate machine is owed the ubiquitous shortcoming of fast stall protection device and is, when the scraper plate machine was jumped chain or one-sided chain rupture, protective device can't send action, thereby the shutdown of locking in time makes fault further develop deterioration.
The ubiquitous shortcoming of existing shallow slot scraper plate machine chain breakage protection device is: (1) because cutter chain or other reasons are when causing scraper plate to become big at interval, this protective device sends misoperation easily when the scraper plate machine; (2) influenced by the tightness of scraper plate chain bar very big for chain breakage protection device, and scraper plate chain bar crosses pine or tension all can cause protective device to send misoperation, and reliability is relatively poor; (3) this chain breakage protection device has taken most space for maintenance of shallow slot across on sorting shallow slot top, changes liner plate at the scraper plate machine, the chain time space is limited, causes maintenance inconvenience.
In brief, unreliable, the problem that can not sensitive action when chain rupture taking place or jump the chain fault of the protective device ubiquity of present shallow slot scraper plate machine operation.
The utility model content
The utility model provides a kind of jumping chain chain breakage protection device that is used for shallow slot scraper plate machine, is intended to overcome the defective that exists in the prior art mentioned above.
Particularly, the utility model provides a kind of jumping chain chain breakage protection device that is used for shallow slot scraper plate machine, and said shallow slot scraper plate machine both sides respectively are provided with a chain; This shallow slot scraper plate machine comprises great wheel, supporting roller, tail wheel, and chain arrives at tail wheel from great wheel extend past supporting roller, and the place installs and fixes axle in great wheel; On fixed axis, install and to center on the axle sleeve that fixed axis freely rotates; Jumping the chain chain breakage protection device comprises: feeler lever, and this feeler lever one end and axle sleeve are fixed, and the other end is resisted against on the chain; Monitoring system, this monitoring system comprise two of mutual series connection near switch, and each is arranged near switch near the fixed axis of each side of shallow slot scraper plate machine both sides.
Preferably, jumping the chain chain breakage protection device is arranged between great wheel and the supporting roller.
Preferably, the supporting steel plate of feeler lever for processing by band steel.
Preferably, on an end of chain, install high-abrasive material at feeler lever additional.
More preferably, high-abrasive material is the rubber skin.
Preferably, be the contactless inductance approach switch of PRL18-5AC near switch.
Preferably, monitoring system further comprises alarm lamp.
Employing is according to the jumping chain chain breakage protection device of the utility model, make install simple, use sensitive reliable, anti-interference anticorrosion, the regular maintenance amount is little and maintenance is convenient.In addition, this jumping chain chain breakage protection device can cooperate with the original fast stall protection mechanism that owes of scraper plate machine, and most of obstacles are eliminated in bud, finds obstacle and the workload of overhauling thereby greatly reduce the staff.Make the jumping chain chain breakage protection device of the utility model have very high economic worth and social value thus, can reliable guarantee be provided for the safe and efficient production of shallow slot heavy-media separator.
Description of drawings
Fig. 1 shows the fast stall protection structure of owing of existing shallow slot scraper plate machine;
Fig. 2 illustrates the position relation according to jumping chain chain breakage protection device of the utility model and scraper plate chain bar;
Fig. 3 illustrates the control principle figure according to the monitoring system of the jumping chain chain breakage protection device of an embodiment of the utility model;
Fig. 4 shows the PLC control ladder diagram according to schematic diagram shown in Figure 3.
The specific embodiment
Hereinafter, identical Reference numeral refers to components identical.
Shallow slot scraper plate machine both sides respectively split a chain.When normal operation, both sides chain height is equal basically, chain vertically on suitable sag is arranged.
When shallow slot scraper plate machine broke down, operation characteristic that is embodied and the consequence that finally causes had obvious difference during all with normal operation.Below will introduce some malfunctions for example about shallow slot scraper plate machine:
(1) chain is long, and then the vertically last sag of chain is bigger, and the arc top is lower, and both sides chain height is equal basically.In this case, cause jumping chain or chain rupture easily;
(2) one side chain bars are jumped chain, and then chain height in both sides is different, and the side chain bar rising of chain takes place to jump, and a side chain bar of not jumping chain reduces, and in this case, makes the side chain bar chain rupture that chain does not take place to jump easily, even makes the equal chain rupture of both sides chain;
(3) one-sided chain chain rupture, then the chain of chain rupture one side is sagging naturally, and it is highly constant that the opposite side chain then keeps, and in this case, causes the chain that chain rupture does not also take place to skew easily, even make this chain that chain rupture also take place thereupon;
(4) the equal chain rupture of both sides chain, then the both sides chain is all sagging naturally, and in the case, chain, scraper plate, material all are deposited in the sorting trench bottom, and suspension also can't discharge.
Operation characteristic according to the above-mentioned malfunction of shallow slot scraper plate machine; The utility model adopts and detects the deflection angle that rides over feeler lever on the chain of scraper plate machine both sides respectively near switch; Monitor the height of scraper plate machine both sides chain with this, and subsequently monitor signal is further being handled to confirm whether shallow slot scraper plate machine breaks down.
Fig. 2 illustrates the position relation according to jumping chain chain breakage protection device of the utility model and scraper plate chain bar.
Each side is provided with a chain 200 respectively in scraper plate machine both sides.As shown in Figure 2, chain 200 is initial from scraper plate head pulley 201, and extend past supporting roller 202 arrives at tail wheel 203 at last.Jumping chain chain breakage protection device 204 is arranged between great wheel 201 and the supporting roller 202.Install and fix axle 205 at great wheel 201 places, the axle sleeve that can freely rotate around fixed axis 205 is installed on fixed axis 205.Jump feeler lever 206 1 ends and the axle sleeve of chain chain breakage protection device 204 and fix, the other end is resisted against on the chain 200.When shallow slot scraper plate machine normally moved, feeler lever 206 slided on chain against an end of chain 200.Feeler lever 206 is the supporting steel plate for being processed by band steel for example, and it is 4 millimeters * 40 millimeters that this band steel can be designed to be about 600 millimeters and cross section.Preferably, feeler lever 206 on an end of chain 200, install high-abrasive material additional, to strengthen the wearability of feeler lever 206.High-abrasive material for example can be rubber skin 207.
Jump near being arranged on the fixed axis 205 of chain chain breakage protection device 204, can sense the deflection angle of feeler lever 206 with respect to chain 200 near switch S L.When shallow slot scraper plate machine normally moved, this deflection angle for example was 45 °.Preferably adopt the contactless inductance approach switch of producing by Korea S AUTONICS company of PRL18-5AC near switch S L, have characteristics such as anticorrosive, dustproof, waterproof.
Fig. 3 illustrates the control principle figure according to the monitoring system of the jumping chain chain breakage protection device of an embodiment of the utility model.
Monitoring system can adopt the PLC monitoring system, comprises the PLC chip, and it is the FP of a Panasonic series PLC.It is as shown in Figure 3,
SB1-X0: scraper plate machine start button SB2-X1: scraper plate machine stop button
SL1-X2: the scraper plate machine is jumped the chain chain rupture and is protected near switch S L2: near switch
SL3-X3: scraper plate machine coal piling protection SL4-X4: the scraper plate machine is owed the speed protection
FR-X15: scraper plate machine overcurrent protection KM1-Y0: scraper plate machine drive motors control contactor
KM2-Y1: the scraper plate organizational security protects action alarm lamp (flicker cycle for example is 1Hz)
In monitoring system shown in Figure 3, near the chain of scraper plate machine both sides, office near switch S L1, the SL2 setting of connecting.When fault mentioned above took place for the chain of scraper plate machine either side, the height of the chain 200 of this side changed, and the deflection angle of the feeler lever of being taken on the chain 200 206 changes thereupon, made thus near among switch S L1, the SL2 one or two all to break off.Owing to the setting of in monitoring system, connecting near switch S L1, SL2, therefore all can cause breaking off near the residing current path of switch near any disconnection among switch S L1, the SL2, just can start thereupon and jump chain chain rupture protection.
Saying that from logical operation when the scraper plate machine ran well, two of the both sides signals that turn back to monitoring system near switch S L were 1, still is 1 at these two signals with (in the digital circuit and logic) back result, and the scraper plate machine continues to run well.When above-mentioned fault took place shallow slot scraper plate machine, at least one signal became 0, two signal by 1 and the back logical consequence is also inevitable thereupon by 1 change 0 in two signals that turn back to monitoring system near switch S L.In the case, monitoring system will be carried out the locking shut-down operation to shallow slot scraper plate machine, and send sound and light alarm.Alarm lamp in monitoring system will correspondingly glimmer.
Fig. 4 shows the PLC control ladder diagram according to schematic diagram shown in Figure 3.
Employing is according to the jumping chain chain breakage protection device of the utility model, make install simple, use sensitive reliable, anti-interference anticorrosion, the regular maintenance amount is little and maintenance is convenient.In addition, this jumping chain chain breakage protection device can cooperate with the original fast stall protection mechanism that owes of scraper plate machine, and most of obstacles are eliminated in bud, finds obstacle and the workload of overhauling thereby greatly reduce the staff.Make the jumping chain chain breakage protection device of the utility model have very high economic worth and social value thus, can reliable guarantee be provided for the safe and efficient production of shallow slot heavy-media separator.
Those skilled in the art will also be appreciated that the protection domain of the utility model is not limited in the foregoing description, and all equivalents to the utility model all drop in the scope of the utility model.
Claims (7)
1. jumping chain chain breakage protection device that is used for shallow slot scraper plate machine; Said shallow slot scraper plate machine both sides respectively are provided with a chain; This shallow slot scraper plate machine comprises great wheel, supporting roller, tail wheel, and chain arrives at tail wheel from great wheel extend past supporting roller, and the place installs and fixes axle in great wheel; Installation can center on the axle sleeve that fixed axis freely rotates on fixed axis, it is characterized in that:
Said jumping chain chain breakage protection device comprises:
Feeler lever, this feeler lever one end and axle sleeve are fixed, and the other end is resisted against on the chain;
Monitoring system, this monitoring system comprise two of mutual series connection near switch, and each is arranged near switch near the fixed axis of each side of shallow slot scraper plate machine both sides.
2. jumping chain chain breakage protection device according to claim 1 is characterized in that, jumps the chain chain breakage protection device and is arranged between great wheel and the supporting roller.
3. jumping chain chain breakage protection device according to claim 1 is characterized in that, the supporting steel plate of feeler lever for being processed by band steel.
4. jumping chain chain breakage protection device according to claim 1 is characterized in that, on an end of chain, installs high-abrasive material at feeler lever additional.
5. jumping chain chain breakage protection device according to claim 4 is characterized in that said high-abrasive material is the rubber skin.
6. jumping chain chain breakage protection device according to claim 1 is characterized in that, is the contactless inductance approach switch of PRL18-5AC near switch.
7. jumping chain chain breakage protection device according to claim 1 is characterized in that said monitoring system further comprises alarm lamp.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011204912855U CN202336386U (en) | 2011-11-30 | 2011-11-30 | Chain jumping and chain scission protector |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011204912855U CN202336386U (en) | 2011-11-30 | 2011-11-30 | Chain jumping and chain scission protector |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202336386U true CN202336386U (en) | 2012-07-18 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011204912855U Expired - Lifetime CN202336386U (en) | 2011-11-30 | 2011-11-30 | Chain jumping and chain scission protector |
Country Status (1)
| Country | Link |
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| CN (1) | CN202336386U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102489381A (en) * | 2011-11-30 | 2012-06-13 | 中国神华能源股份有限公司 | Protective device for chain jump and chain breakage |
| CN103708205A (en) * | 2012-09-29 | 2014-04-09 | 无锡市兴盛环保设备有限公司 | Infrared chain displacement protector for pipeline chain-scraper conveyor |
| CN105469557A (en) * | 2016-01-08 | 2016-04-06 | 南通星诺冷冻设备有限公司 | Novel large-chain alarming device |
| CN107954177A (en) * | 2017-11-07 | 2018-04-24 | 陕西未来能源化工有限公司 | The monitoring device and its monitoring method of chain scrapper conveyor |
-
2011
- 2011-11-30 CN CN2011204912855U patent/CN202336386U/en not_active Expired - Lifetime
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102489381A (en) * | 2011-11-30 | 2012-06-13 | 中国神华能源股份有限公司 | Protective device for chain jump and chain breakage |
| CN103708205A (en) * | 2012-09-29 | 2014-04-09 | 无锡市兴盛环保设备有限公司 | Infrared chain displacement protector for pipeline chain-scraper conveyor |
| CN105469557A (en) * | 2016-01-08 | 2016-04-06 | 南通星诺冷冻设备有限公司 | Novel large-chain alarming device |
| CN105469557B (en) * | 2016-01-08 | 2017-10-03 | 南通星诺冷冻设备有限公司 | A kind of new big chain warning device |
| CN107954177A (en) * | 2017-11-07 | 2018-04-24 | 陕西未来能源化工有限公司 | The monitoring device and its monitoring method of chain scrapper conveyor |
| CN107954177B (en) * | 2017-11-07 | 2023-11-17 | 陕西未来能源化工有限公司 | Monitoring device and monitoring method for double-chain scraper |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20120718 Effective date of abandoning: 20140409 |
|
| RGAV | Abandon patent right to avoid regrant |