CN204702420U - A kind of anti-steel rope breaking device - Google Patents
A kind of anti-steel rope breaking device Download PDFInfo
- Publication number
- CN204702420U CN204702420U CN201520427405.3U CN201520427405U CN204702420U CN 204702420 U CN204702420 U CN 204702420U CN 201520427405 U CN201520427405 U CN 201520427405U CN 204702420 U CN204702420 U CN 204702420U
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- resistance
- force
- sensing sensor
- steel rope
- comparator
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Abstract
The utility model discloses a kind of anti-steel rope breaking device, comprise mechanics and electric part; Mechanics comprises force-sensing sensor, two fixed pulleys, movable pulleys, and two fixed pulleys are connected with hoisting crane by firm banking; Movable pulley is connected with movable rod, is positioned in the middle of two fixed pulleys; Force-sensing sensor is placed between movable rod and hoisting crane; Electric part comprises bridge circuit, comparator circuit, amplifying circuit and voltage relay; Voltage U b between the resistance R1 of bridge circuit and resistance R2, the voltage U a between force-sensing sensor resistance R3 and adjustable resistance R4 are input in comparator circuit and compare, the mouth of comparator circuit is connected with the input end of amplifying circuit, the mouth of amplifying circuit is connected with the coil of voltage relay, and the normally closed switch of voltage relay is connected with the control loop of hoisting crane.This device can prevent the steel rope of hoisting crane to be pulled off, to reduce property damage and to guarantee personal security.
Description
Technical field
The utility model relates to a kind of anti-steel rope breaking device.
Background technology
Hoisting crane generally uses, because improper use often has an accident at industry fields such as building, liftings.Hoisting crane exceeds the time limit to use, long neglected and in disrepair, the aging height limitator switch that makes of electric elements is failure to actuate or slow movement, what have is even sticked together by the spark produced during action cannot disconnects contact scorification, and cause pulleying to be broken by wire rope roll, make suspension hook, lift heavy thing falls and cause property and personal casualty.Simultaneously, the limiter of moment of some hoisting crane particularly on mono beam crane in bridge type does not complete wiring, just think the telltale use of amplitude display and hoisting capacity, equally easily cause the generation of lifting accident when not having the effect of killer, cause property and personal casualty.Therefore, we are in the urgent need to a kind of device that the steel rope of hoisting crane can be prevented to be pulled off, to guarantee property and personal security.
Utility model content
The purpose of this utility model is to provide a kind of anti-steel rope breaking device, and this device can prevent the steel rope of hoisting crane to be pulled off, and decreases property damage, ensure that personal security.
The utility model is changed by a force-sensing sensor the pulling force of the steel rope of hoisting crane, a voltage relay job is driven again by bridge circuit, comparator circuit and amplifying circuit process, normally closed for voltage relay point is sealed in crane control loop, reach the object of the wire cable rupture preventing hoisting crane, the wire cable rupture accident that can effectively avoid hoisting crane often to occur.
The utility model is achieved in that
A kind of anti-steel rope breaking device, comprises mechanics and electric part;
Described mechanics comprises force-sensing sensor, two fixed pulleys, movable pulleys, and two fixed pulleys are connected with hoisting crane by firm banking, and described movable pulley is connected with movable rod, are positioned in the middle of two fixed pulleys; Again through movable pulley after fixed pulley on the left of the steel wire penetrating of hoisting crane, finally again through the fixed pulley on right side, and steel rope on the left of movable pulley is parallel with the steel rope on right side;
Described movable rod comprises the connecting rod, guide rod and the spring that is set on guide rod that are connected with movable pulley, and connecting rod moves along guide rod under the action of the spring; Described force-sensing sensor is placed between guide rod and hoisting crane, and one end of described spring contacts with force-sensing sensor, and the other end of spring contacts with connecting rod;
Described electric part comprises 24V direct supply, bridge circuit, comparator circuit, amplifying circuit and voltage relay, described 24V direct supply is bridge circuit, comparator circuit, amplifying circuit are powered, described bridge circuit comprises force-sensing sensor resistance R3, adjustable resistance R4, and the identical resistance R1 of resistance and resistance R2, one end of resistance R1 is connected with 24V direct supply, the other end of resistance R1 is connected with one end of resistance R2, one end of force-sensing sensor resistance R3 is connected with 24V direct supply, the other end of force-sensing sensor resistance R3 is connected with one end of adjustable resistance R4, the other end of resistance R2 and the other end of adjustable resistance R4 are connected to ground, voltage U b between resistance R1 and resistance R2, voltage U a between force-sensing sensor resistance R3 and adjustable resistance R4 is input in comparator circuit and compares, the mouth of comparator circuit is connected with the input end of amplifying circuit, the mouth of amplifying circuit is connected with the coil of voltage relay, the normally closed switch of described voltage relay is connected with the control loop of hoisting crane, when the coil of voltage relay obtains electric, the normally closed switch of voltage relay disconnects, the control loop of hoisting crane is in off-state, hoisting crane quits work.
Further scheme is: described comparator circuit comprises comparator, resistance R5 and resistance R6, the in-phase end of comparator is connected with the other end of resistance R1, the end of oppisite phase of comparator is connected with the other end of force-sensing sensor resistance R3, the mouth of comparator is connected with 24V direct supply by resistance R5, the mouth of comparator is connected with one end of resistance R6, and the other end of resistance R6 is connected with amplifying circuit.
Further scheme is: described amplifying circuit comprises aerotron, resistance R7, diode D, the base stage of aerotron is connected with the other end of resistance R6, the base stage of aerotron is connected to ground by resistance R7, the emitter of aerotron is connected to ground, the collecting electrode of aerotron is connected with the positive pole of diode D, the negative pole of diode D is connected with 24V direct supply, and the positive pole of diode D is connected with the negative pole of diode D by the coil of voltage relay.
Further scheme is: the bottom of described connecting rod is provided with bullport, and the top of guide rod is inserted in bullport.
Force-sensing sensor resistance R3 resistance increases with force-sensing sensor pressure and reduces, generally, breaking force of rope is more than 3 times of steel rope pulling force allowable, adjustable resistance R4 resistance equals the resistance of force-sensing sensor resistance R3 when lineoutofservice signal pull is 1.5 times of pulling force allowable, and namely the resistance of adjustable resistance R4 equals 1.5 times of the resistance of force-sensing sensor resistance R3.
In the utility model, bridge circuit produces two voltage U a, Ub, voltage comparator in comparator circuit is used to compare two voltage U a, Ub in bridge circuit, output on amplifying circuit, in amplifying circuit, aerotron amplifies voltage and outputs on voltage relay again, voltage relay normally closed switch is sealed in crane control loop, to reach the object preventing wire cable rupture.
The beneficial effects of the utility model are: structure is simple, and input cost is low; The object of the wire cable rupture preventing hoisting crane can be reached, the wire cable rupture accident that can effectively avoid hoisting crane often to occur, reduce property damage, guarantee staff's personal safety.
Accompanying drawing explanation
Fig. 1 is the structural representation of the utility model mechanics;
Fig. 2 is the circuit diagram of the utility model electric part.
In figure: 1, steel rope, the 2, second firm banking, the 3, first firm banking, 4, the second fixed pulley, 5, movable pulley, the 6, first fixed pulley, 7, movable rod, 8, spring, 9, force-sensing sensor, 10, bridge circuit, 11, comparator circuit, 12, amplifying circuit, 13, connecting rod, 14, guide rod, KV, voltage relay.
Detailed description of the invention
Below in conjunction with accompanying drawing, the utility model is described further.
See Fig. 1 and Fig. 2, the utility model is changed by a force-sensing sensor 9 pulling force of the steel rope 1 of hoisting crane, process drive one voltage relay KV by bridge circuit 10, comparator circuit 11 and amplifying circuit 12 again to work, the normally closed switch of voltage relay KV is sealed in crane control loop, reach the object preventing the steel rope 1 of hoisting crane from rupturing, the wire cable rupture accident that can effectively avoid hoisting crane often to occur.Concrete structure of the present utility model is:
A kind of anti-steel rope breaking device, comprises mechanics and electric part;
Described mechanics comprises force-sensing sensor 9, first fixed pulley 6, second fixed pulley 4, movable pulley 5, first fixed pulley 6 is connected with hoisting crane by the first firm banking 3, second fixed pulley 4 is connected with hoisting crane by the second firm banking 2, movable pulley 5 is connected with movable rod 7, and movable pulley 5 is positioned in the middle of the first fixed pulley 6 and the second fixed pulley 4; The steel rope 1 of hoisting crane through after the first fixed pulley 6 again through movable pulley 5, finally again through the second fixed pulley 4, and steel rope 1 on the left of movable pulley 5 is parallel with the steel rope 1 on right side;
Described movable rod 7 comprises the connecting rod 13, guide rod 14 and the spring 8 that is set on guide rod 14 that are connected with movable pulley 5, the bottom of connecting rod 13 is provided with bullport, the top of guide rod 14 is inserted in bullport, described force-sensing sensor 9 is placed between guide rod 14 and hoisting crane, one end of described spring 8 contacts with force-sensing sensor 9, and the other end of spring 8 contacts with connecting rod 13; Connecting rod 13 moves along guide rod 14 under the effect of spring 8, and the stressed of steel rope 1 is passed to force-sensing sensor 9 by movable rod 7;
Described electric part comprises 24V direct supply, bridge circuit 10, comparator circuit 11, amplifying circuit 12 and voltage relay KV, 24V direct supply is bridge circuit 10, comparator circuit 11, amplifying circuit 12 are powered, described bridge circuit 10 comprises force-sensing sensor resistance R3, adjustable resistance R4, and the identical resistance R1 of resistance and resistance R2, one end of resistance R1 is connected with 24V direct supply, the other end of resistance R1 is connected with one end of resistance R2, one end of force-sensing sensor resistance R3 is connected with 24V direct supply, the other end of force-sensing sensor resistance R3 is connected with one end of adjustable resistance R4, the other end of resistance R2 and the other end of adjustable resistance R4 are connected to ground, voltage U b between resistance R1 and resistance R2, voltage U a between force-sensing sensor resistance R3 and adjustable resistance R4 is input in comparator circuit 11 and compares, the mouth of comparator circuit 11 is connected with the input end of amplifying circuit 12, the mouth of amplifying circuit 12 is connected with the coil of voltage relay KV, the normally closed switch of voltage relay KV is connected with the control loop of hoisting crane, when the coil of voltage relay KV obtains electric, the normally closed switch of voltage relay KV disconnects, the control loop of hoisting crane is in off-state, hoisting crane quits work, thus prevent hoist fracture of rope,
Described comparator circuit 11 comprises comparator LM393, resistance R5 and resistance R6, the in-phase end of comparator LM393 is connected with the other end of resistance R1, the end of oppisite phase of comparator LM393 is connected with the other end of force-sensing sensor resistance R3, the mouth of comparator LM393 is connected with 24V direct supply by resistance R5, the mouth of comparator LM393 is connected with one end of resistance R6, and the other end of resistance R6 is connected with amplifying circuit 12;
Described amplifying circuit 12 comprises aerotron NPN, resistance R7, diode D, the base stage of aerotron NPN is connected with the other end of resistance R6, the base stage of aerotron NPN is connected to ground by resistance R7, the emitter of aerotron NPN is connected to ground, the collecting electrode of aerotron NPN is connected with the positive pole of diode D, the negative pole of diode D is connected with 24V direct supply, and the positive pole of diode D is connected with the negative pole of diode D by the coil of voltage relay KV.
Generally, steel rope 1 rupture pull force is more than 3 times of steel rope 1 pulling force allowable, as long as therefore steel rope 1 pulling force within 1.5 times of steel rope 1 pulling force allowable, just can ensure that steel rope 1 is not pulled off.Due to resistance R1=resistance R2, therefore Ub=+12V, adjustable resistance R4 resistance equals the resistance of force-sensing sensor resistance R3 when steel rope 1 pulling force is 1.5 times of pulling force allowable.Reduce because force-sensing sensor resistance R3 resistance increases with force-sensing sensor 9 pressure, when steel rope 1 pulling force is greater than 1.5 times of pulling force allowable, force-sensing sensor resistance R3< adjustable resistance R4, voltage U a>+12V, voltage U a> voltage U b, comparator LM393 in comparator circuit 11 exports high level, make conducting between the collecting electrode of the aerotron NPN in amplifying circuit 12 and emitter, and then the coil of voltage relay KV obtains electric, due to the normally closed switch of voltage relay KV has been sealed in crane control loop, when the coil of voltage relay KV obtains electric, the normally closed switch of voltage relay KV disconnects, crane control loop open circuit, hoisting crane is out of service, steel rope 1 can be avoided to be pulled off.Otherwise when steel rope 1 pulling force is less than 1.5 times of pulling force allowable, the coil of voltage relay KV must not be electric, and crane control loop is path, and hoisting crane normally runs.
The utility model radical function is for guaranteeing on weight-lifting equipment and personnel, safety of goods below weight-lifting equipment, Wuhan Iron and Steel Plant 10 hoisting cranes are successfully applied to, in improved 1 year, the anti-steel rope breaking device of 10 hoisting cranes is total to action 2 times, these 2 lifting process carry personnel 3 and part objects altogether, if wire cable rupture will cause casualties and article damage, only the value of article will just reach 140,000 yuan, and the person of 3 people is worth inestimable.
The utility model can prevent steel rope overload from breaking effectively, can be applicable to the various occasions that hoisting crane, winch etc. use wire rope gearing, has a extensive future.
Claims (5)
1. an anti-steel rope breaking device, is characterized in that: comprise mechanics and electric part;
Described mechanics comprises force-sensing sensor, two fixed pulleys, movable pulleys, and two fixed pulleys are connected with hoisting crane by firm banking, and described movable pulley is connected with movable rod, are positioned in the middle of two fixed pulleys; On the left of the steel wire penetrating of hoisting crane after fixed pulley again through movable pulley, finally again through fixed pulley, and steel rope on the left of movable pulley is parallel with the steel rope on right side;
Described movable rod comprises the connecting rod, guide rod and the spring that is set on guide rod that are connected with movable pulley, and connecting rod moves along guide rod under the action of the spring; Described force-sensing sensor is placed between guide rod and hoisting crane, and one end of described spring contacts with force-sensing sensor, and the other end of spring contacts with connecting rod;
Described electric part comprises 24V direct supply, bridge circuit, comparator circuit, amplifying circuit and voltage relay, described 24V direct supply is bridge circuit, comparator circuit, amplifying circuit are powered, described bridge circuit comprises force-sensing sensor resistance R3, adjustable resistance R4, and the identical resistance R1 of resistance and resistance R2, one end of resistance R1 is connected with 24V direct supply, the other end of resistance R1 is connected with one end of resistance R2, one end of force-sensing sensor resistance R3 is connected with 24V direct supply, the other end of force-sensing sensor resistance R3 is connected with one end of adjustable resistance R4, the other end of resistance R2 and the other end of adjustable resistance R4 are connected to ground, voltage U b between resistance R1 and resistance R2, voltage U a between force-sensing sensor resistance R3 and adjustable resistance R4 is input in comparator circuit and compares, the mouth of comparator circuit is connected with the input end of amplifying circuit, the mouth of amplifying circuit is connected with the coil of voltage relay, the normally closed switch of described voltage relay is connected with the control loop of hoisting crane, when the coil of voltage relay obtains electric, the normally closed switch of voltage relay disconnects, the control loop of hoisting crane is in off-state, hoisting crane quits work.
2. anti-steel rope breaking device as claimed in claim 1, it is characterized in that: described comparator circuit comprises comparator, resistance R5 and resistance R6, the in-phase end of comparator is connected with the other end of resistance R1, the end of oppisite phase of comparator is connected with the other end of force-sensing sensor resistance R3, the mouth of comparator is connected with 24V direct supply by resistance R5, the mouth of comparator is connected with one end of resistance R6, and the other end of resistance R6 is connected with amplifying circuit.
3. anti-steel rope breaking device as claimed in claim 2, it is characterized in that: described amplifying circuit comprises aerotron, resistance R7, diode D, the base stage of aerotron is connected with the other end of resistance R6, the base stage of aerotron is connected to ground by resistance R7, the emitter of aerotron is connected to ground, the collecting electrode of aerotron is connected with the positive pole of diode D, and the negative pole of diode D is connected with 24V direct supply, and the positive pole of diode D is connected with the negative pole of diode D by the coil of voltage relay.
4. anti-steel rope breaking device as claimed in claim 1, is characterized in that: the bottom of described connecting rod is provided with bullport, and the top of guide rod is inserted in bullport.
5. anti-steel rope breaking device as claimed in claim 1, is characterized in that: the resistance of adjustable resistance R4 equals the resistance of force-sensing sensor resistance R3 when steel cable pulling force is 1.5 times of pulling force allowable.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520427405.3U CN204702420U (en) | 2015-06-19 | 2015-06-19 | A kind of anti-steel rope breaking device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520427405.3U CN204702420U (en) | 2015-06-19 | 2015-06-19 | A kind of anti-steel rope breaking device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204702420U true CN204702420U (en) | 2015-10-14 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520427405.3U Expired - Fee Related CN204702420U (en) | 2015-06-19 | 2015-06-19 | A kind of anti-steel rope breaking device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204702420U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106241619A (en) * | 2016-09-23 | 2016-12-21 | 成都九十度工业产品设计有限公司 | A kind of tower crane for building |
| CN106241632A (en) * | 2016-09-23 | 2016-12-21 | 成都九十度工业产品设计有限公司 | A kind of tower crane of band rock-steady structure |
| CN106395649A (en) * | 2016-09-23 | 2017-02-15 | 成都九十度工业产品设计有限公司 | Standard knot structure of engineering tower crane |
| CN113336111A (en) * | 2021-05-28 | 2021-09-03 | 淮阴工学院 | Protective fusing device and method for steel wire rope of automobile crawler crane under overload tension |
-
2015
- 2015-06-19 CN CN201520427405.3U patent/CN204702420U/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106241619A (en) * | 2016-09-23 | 2016-12-21 | 成都九十度工业产品设计有限公司 | A kind of tower crane for building |
| CN106241632A (en) * | 2016-09-23 | 2016-12-21 | 成都九十度工业产品设计有限公司 | A kind of tower crane of band rock-steady structure |
| CN106395649A (en) * | 2016-09-23 | 2017-02-15 | 成都九十度工业产品设计有限公司 | Standard knot structure of engineering tower crane |
| CN106395649B (en) * | 2016-09-23 | 2018-09-28 | 四川欧瑞建设集团有限公司 | A kind of standard section structure of engineering tower crane |
| CN106241619B (en) * | 2016-09-23 | 2018-12-07 | 成都九十度工业产品设计有限公司 | A kind of tower crane for building |
| CN113336111A (en) * | 2021-05-28 | 2021-09-03 | 淮阴工学院 | Protective fusing device and method for steel wire rope of automobile crawler crane under overload tension |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20170717 Address after: 430083, Gate No. 2, Qingshan District, Hubei, Wuhan Patentee after: Wuhan iron and Steel Company Limited Address before: 430080 Wuhan, Hubei Friendship Road, No. 999, Wuchang Patentee before: Wuhan Iron & Steel (Group) Corp. |
|
| 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: 20151014 Termination date: 20190619 |