CN202038782U - Cable over-winding protection device - Google Patents
Cable over-winding protection device Download PDFInfo
- Publication number
- CN202038782U CN202038782U CN2011200826494U CN201120082649U CN202038782U CN 202038782 U CN202038782 U CN 202038782U CN 2011200826494 U CN2011200826494 U CN 2011200826494U CN 201120082649 U CN201120082649 U CN 201120082649U CN 202038782 U CN202038782 U CN 202038782U
- Authority
- CN
- China
- Prior art keywords
- cable
- magnetic induction
- contactless magnetic
- overwinding
- fender guard
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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Abstract
The utility model provides a cable over-winding protection device which comprises a contactless magnetic induction proximity switch and a counter. The cable over-winding protection device is arranged on a cable winding coil; the cable winding coil is arranged at the tail part of a scraper body; a tail cable extends out of the cable winding coil; a detection point is arranged on the cable winding coil; the contactless magnetic induction proximity switch is arranged above the detection point and is connected with the counter through a lead; and the counter is connected with a control system. The cable over-winding protection device has simple structure and low cost and not only can carry out early warning in advance, but also can be automatically cut off, thereby greatly improving the operation safety.
Description
Technical field
The utility model relates to the mechanical assist device field, particularly a kind of cable overwinding-proof fender guard.
Background technology
Cable overwinding-proof fender guard is a kind of preventive device that is equipped with for electronic trackless extractive equipment tail cable; when the tail cable number of turns is very few; shut down processing by fender guard, thereby guarantee in the equipment operation process, tail cable is not pulled and electric shock accidents is taken place.Because the employed cable overwinding-proof of electric LHD fender guard is the mechanical type fender guard at present, it is to carry out transmission by chain and gear, therefore in installation process, chain link wheel and chain, tension wheel are on same horizontal surface under claimed bottom of device chain link wheel and the cable rolling dish slip ring, therefore for guaranteeing reliable transmission, the chain elasticity must be suitably, if chain is too tight, then switch bottom and bearing junction are may be stressed excessive and ftracture, cause the gear wheel shaft can not be fixed, chain can't be fixed and damage; If chain is pine too, and comes off easily, switch is ineffective, simultaneously because the trackless extractive equipment is to use under the environment of down-hole humidity, dust, therefore if adopt metal parts very easily to get rusty, so parts often adopt Plastic Parts, but adopt Plastic Parts to wear and tear easily, fault rate is high.
The utility model content
At above problem; the purpose of this utility model provides a kind of electric LHD cable overwinding-proof fender guard; utilizing on overwinding-proof fender guard basis the magnetic proximity sensor switch to substitute former mechanical type overwinding-proof fender guard at existing electric LHD cable monitors the cable rolling dish inner cable number of turns; when device power cable length is kept to 6 circles; the bright while buzzer warning of Warning light; the alert cable is about to reach the limit of the position and slows down or move backward; if move on this moment; when device power cable length is kept to 3 circles; can cut off main circuit power halts the main motor outage equipment that makes; reach and prevent to cause the accident that tail cable breaks to occur because of equipment moves on; for reaching this purpose; the utility model provides a kind of cable overwinding-proof fender guard; comprise that contactless magnetic induction is near the switch sum counter; described cable overwinding-proof fender guard is arranged on the cable rolling dish; described cable rolling dish is arranged on shovel motivation main body afterbody; be extended with tail cable on the cable rolling dish; described cable rolling dish is provided with check point; described contactless magnetic induction is arranged on the check point top near switch; contactless magnetic induction links to each other with counting machine by lead near switch, and described counting machine links to each other with control system.
As further improvement of the utility model, described contactless magnetic induction near switch comprise the first contactless magnetic induction near switch and the second contactless magnetic induction near switch, in order to carry out plus-minus counting according to cable rolling dish operating condition, this patent is provided with 2 contactless magnetic induction near switch, calculate when check point carries out addend near the contactless magnetic induction of switch to the second near the switch hour counter by the first contactless magnetic induction, calculate when check point carries out subtrahend near the contactless magnetic induction of switch to the first near the switch hour counter by the second contactless magnetic induction.
As further improvement of the utility model, described counting machine links to each other with buzzer phone with Warning light, make when device power cable length is kept to 6 circles, but the bright while buzzer warning of Warning light.
The utility model can be monitored the cable rolling dish inner cable number of turns at any time by a kind of cable overwinding-proof fender guard of design, therefore has following advantage:
1. this patent is to utilize on overwinding-proof fender guard basis the magnetic proximity sensor switch to substitute former mechanical type overwinding-proof fender guard at existing electric LHD cable the cable rolling dish inner cable number of turns is monitored; therefore need not existing structure is improved; adopt install behind this patent and maintenance convenient, can effectively avoid faults such as chain releasing, mechanical friction, the switch of mechanical drive mode be cracked.
2. this patent is owing to be to adopt magnetic proximity sensor to monitor, therefore in case need to change tail cable or chain comes off, only need elder generation that cable has been put after, this patent counting machine is resetted, carry out disposable the finishing of take-up again and get final product, improved overhaul efficiency greatly.
3. this patent is simple in structure, and is with low cost, and cost is less than 1/50 of original device, and can give warning in advance, and can stop automatically to break again, thereby improve the safety of operation greatly.
Description of drawings
Fig. 1 adopts fender guard shovel car work scheme drawing described in the utility model;
Fig. 2 is the utility model electrical schematic diagram scheme drawing;
Member among the figure is:
1, shovel motivation main body; 2, cable rolling dish; 2-1, check point; 3, contactless magnetic induction is near switch;
3-1, the first contactless magnetic induction are near switch; 3-2, the second contactless magnetic induction are near switch;
4, counting machine; 5, tail cable;
The specific embodiment
Below in conjunction with drawings and Examples utility model is described in detail:
The purpose of this utility model provides a kind of electric LHD cable overwinding-proof fender guard; utilize on overwinding-proof fender guard basis the magnetic proximity sensor switch to substitute former mechanical type overwinding-proof fender guard at existing electric LHD cable the cable rolling dish inner cable number of turns is monitored, can prevent to cause stub cable to break to such an extent that accident occurs because of equipment moves on.
The utility model provides shovel car work scheme drawing a kind of as shown in Figure 2 cable overwinding-proof of electrical schematic diagram scheme drawing fender guard as shown in Figure 1; comprise that contactless magnetic induction is near switch 3 sum counters 4; described cable overwinding-proof fender guard is arranged on the cable rolling dish 2; described cable rolling dish 2 is arranged on shovel motivation main body 1 afterbody; be extended with tail cable 5 on the cable rolling dish 2; described cable rolling dish 2 is provided with check point 2-1; described contactless magnetic induction is arranged on check point 2-1 top near switch 3; described contactless magnetic induction near switch 3 comprise the first contactless magnetic induction near switch 3-1 and the second contactless magnetic induction near switch 3-2; in order to carry out plus-minus counting according to cable rolling dish 2 operating conditions; this patent is provided with 2 contactless magnetic induction near switch 3; when carrying out addend near the contactless magnetic induction of switch 3-1 to the second near switch 3-2 hour counter 4 by the first contactless magnetic induction, calculates check point; when carrying out subtrahend near the contactless magnetic induction of switch 3-2 to the first near switch 3-1 hour counter 4 by the second contactless magnetic induction, calculates check point 4; because it is 10mm that contactless magnetic induction detects distance near switch 3; therefore just require the first contactless magnetic induction near switch 3-1 and the second contactless magnetic induction near the vertical distance of the transmitting terminal of switch 3-2 and check point 2-1 less than 10mm; and according to installation requirement near switch; therefore the first contactless magnetic induction allows size to be preferably 45mm near switch 3-1 and the second contactless magnetic induction near the minimum of the level interval of switch 3-2; described contactless magnetic induction links to each other with counting machine 4 by lead near switch 3; described counting machine 4 links to each other with control system; described counting machine 4 links to each other with buzzer phone with Warning light; make when device power cable length is kept to 6 circles the bright while buzzer warning of Warning light.
The utility model working process is as follows, when device power cable length is kept to 6 circles, the closing of contact of Warning light, the bright while buzzer warning of Warning light, the alert cable is about to reach the limit of the position and slows down or move backward, if move on this moment, when device power cable length was kept to 3 circles, relay can disconnect and cut off main circuit power halted the main motor outage equipment that makes
The utility model can be monitored the cable rolling dish inner cable number of turns at any time by a kind of cable overwinding-proof fender guard of design, therefore has following advantage:
1. this patent is to utilize on overwinding-proof fender guard basis the magnetic proximity sensor switch to substitute former mechanical type overwinding-proof fender guard at existing electric LHD cable the cable rolling dish inner cable number of turns is monitored; therefore need not existing structure is improved; adopt install behind this patent and maintenance convenient, can effectively avoid faults such as chain releasing, mechanical friction, the switch of mechanical drive mode be cracked.
2. this patent is owing to be to adopt magnetic proximity sensor to monitor, therefore in case need to change tail cable or chain comes off, only need elder generation that cable has been put after, this patent counting machine is resetted, carry out disposable the finishing of take-up again and get final product, improved overhaul efficiency greatly.
3. this patent is simple in structure, and is with low cost, and cost is less than 1/50 of original device, and can give warning in advance, and can stop automatically to break again, thereby improve the safety of operation greatly.
The above; it only is preferred embodiment of the present utility model; be not to be the restriction of the utility model being made any other form, and, still belong to the utility model scope required for protection according to any modification or equivalent variations that technical spirit of the present utility model is done.
Claims (4)
1. cable overwinding-proof fender guard; comprise that contactless magnetic induction is near switch (3) sum counter (4); described cable overwinding-proof fender guard is arranged on the cable rolling dish (2); described cable rolling dish (2) is arranged on shovel motivation main body (1) afterbody; be extended with tail cable (5) on the cable rolling dish (2); it is characterized in that: described cable rolling dish (2) is provided with check point (2-1); described contactless magnetic induction is arranged on check point (2-1) top near switch (3); contactless magnetic induction links to each other with counting machine (4) by lead near switch (3), and described counting machine (4) links to each other with control system.
2. a kind of cable overwinding-proof fender guard according to claim 1 is characterized in that: described contactless magnetic induction near switch (3) comprise the first contactless magnetic induction near switch (3-1) and the second contactless magnetic induction near switch (3-2).
3. a kind of cable overwinding-proof fender guard according to claim 1 and 2, it is characterized in that: described counting machine (4) links to each other with Warning light.
4. a kind of cable overwinding-proof fender guard according to claim 3, it is characterized in that: described counting machine (4) links to each other with buzzer phone.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011200826494U CN202038782U (en) | 2011-03-25 | 2011-03-25 | Cable over-winding protection device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011200826494U CN202038782U (en) | 2011-03-25 | 2011-03-25 | Cable over-winding protection device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202038782U true CN202038782U (en) | 2011-11-16 |
Family
ID=44966240
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011200826494U Expired - Fee Related CN202038782U (en) | 2011-03-25 | 2011-03-25 | Cable over-winding protection device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202038782U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110342311A (en) * | 2019-08-13 | 2019-10-18 | 洛阳理工学院 | A kind of nanocrystalline broken magnetic machine |
-
2011
- 2011-03-25 CN CN2011200826494U patent/CN202038782U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110342311A (en) * | 2019-08-13 | 2019-10-18 | 洛阳理工学院 | A kind of nanocrystalline broken magnetic machine |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20111116 Termination date: 20190325 |