CN104085803A - Protective device for preventing excessive pay-off of crane steel rope - Google Patents
Protective device for preventing excessive pay-off of crane steel rope Download PDFInfo
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- CN104085803A CN104085803A CN201410299775.3A CN201410299775A CN104085803A CN 104085803 A CN104085803 A CN 104085803A CN 201410299775 A CN201410299775 A CN 201410299775A CN 104085803 A CN104085803 A CN 104085803A
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- limiter
- warning device
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- steel rope
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Abstract
The invention relates to the technical field of cranes and in particular relates to a protective device for preventing excessive pay-off of a crane steel rope. The invention aims at providing the protective device for preventing excessive pay-off of a crane steel rope, which is independent of a moment limiter and can normally work under the condition that the moment limiter is de-energized. The protective device comprises a first position sensor KM1, a second position sensor KM2, a warning device, a moment limiter control main engine and a power supply, wherein the first position sensor KM1 is fixed on a rope pressing mechanism comprising a rope pressing wheel and a support, and the second position sensor KM2 is arranged on the outer circumference surface of a steel rope reel wound by a steel rope. The protective device is suitable for the field of the cranes.
Description
Technical field
The present invention relates to the technical field of hoisting crane, be specifically related to the anti-overdischarging protector of crane rope.
Background technology
According to the requirement of GB12602-2009 < < elevator machinery overload protection device > >, three tons of above lorry-mounted cranes require to install limiter of moment additional, and the limiter of moment product of installing on straight arm type lorry-mounted crane in the market is mainly comprised of power sensor, linear transducer, angular transducer and height limit switch; For in the lift heavy operation at hoisting crane for the steel rope of the object that hoists, owing to explicitly calling in GB12602-2009 standard, must not cross the state of putting to it and detect protection, so most of limiter of moment producer carries out putting to steel rope to limiter of moment configuration when producing, not detect and the function of protection; And in the process of crane hoisting weight; if there is to put phenomenon in steel rope; can damage equipment; even can make steel rope from pressing plate, extract out or plate screw is broken and had an accident; so in the working process of hoisting crane; no matter from secure context or economic aspect, the anti-mistake of steel rope is put the detection of state and is protected extremely important.
Summary of the invention
The present invention overcomes the deficiency that prior art exists, and technical matters to be solved is: provide a kind of simple in structure, can be with the crane rope of limiter of moment cooperating anti-overdischarging protector.
In order to solve the problems of the technologies described above, the technical solution used in the present invention is: the anti-overdischarging protector of crane rope, comprise primary importance sensor KM1, second place sensor KM2, warning device, limiter of moment main control system and power supply, described primary importance sensor KM1 is fixed in the Ya Sheng mechanism that comprises press rope wheel and support, and described second place sensor KM2 is arranged on the cable drum outer circumference surface that is wound with steel rope by mounting rod, one end of the open contact KM1.1 of described primary importance sensor KM1 and connect one end of normally closed contact KM2.1 of described second place sensor KM2 after be connected with described positive source, the other end of the open contact KM1.1 of described primary importance sensor KM1 is connected with the first PORT COM of described limiter of moment main control system, the other end of the normally closed contact KM2.1 of described second place sensor KM2 is connected with the second PORT COM of described limiter of moment main control system, the first control port of described limiter of moment main control system is connected with one end of described warning device, the other end of described warning device is connected with described power cathode.
Described anti-Cross prevention system also comprises electric liquid protective valve DF1, and one end of described electric liquid protective valve DF1 is connected with the second control port of described limiter of moment main control system, and the other end of described electric liquid protective valve DF1 is connected with described power cathode; Described warning device comprises buzzer phone DL1, the input end that the input end of described buzzer phone DL1 is described warning device, the mouth that the mouth of described buzzer phone DL1 is described warning device; Described primary importance sensor KM1 and described second place sensor KM2 are approach switch.
The present invention compared with prior art has following beneficial effect:
1, in the present invention, the anti-Cross prevention system of steel rope comprises primary importance sensor KM1, second place sensor KM2, warning device, limiter of moment main control system and power supply, described primary importance sensor KM1 is fixed in the Ya Sheng mechanism that comprises press rope wheel and support, and described second place sensor KM2 is arranged on the cable drum outer circumference surface that is wound with steel rope by mounting rod, primary importance sensor KM1 is for detection of the position of Ya Sheng mechanism, second place sensor KM2 is for detection of the folding and unfolding state of a certain circle (as the last lap) steel rope being wound around on cable drum, in the process of crane hoisting weight, release along with steel rope, the displacement meeting of the actuator in Ya Sheng mechanism changes, and the number of turns of this displacement and steel rope is certain proportion, when steel rope is released into a fixing turn (as last lap), actuator in Ya Sheng mechanism enters the detection range of primary importance sensor KM1, primary importance sensor KM1 action, its open contact KM1.1 is closed, and transmit an on-off signal to the main control system of limiter of moment, the main control system of limiter of moment sends another switching value to second place sensor KM2 after receiving this on-off signal, second place sensor KM2 connects, its normally closed contact KM2.1 disconnects, now second place sensor KM2 detects the folding and unfolding state of remaining a certain circle (as last lap) steel rope in real time, when this circle steel rope being detected, discharge when complete, the normally closed contact KM2.1 closure that is the second place sensor KM2 of off-state, and transmit an on-off signal to the main control system of limiter of moment, the main control system of limiter of moment receives that the backward warning device of this on-off signal transmits control signal, warning device sends alerting signal after receiving signal, remind staff to take action in time, guarantee that equipment can not cause damaging because of excessive release of steel wire rope.
2, in the present invention, warning device comprises buzzer phone DL1, and this buzzer phone DL1 can send high caution sound when excessive release of steel wire rope, has good warning function; Anti-Cross prevention system in the present invention also comprises the electric liquid protective valve DF1 being connected with limiter of moment; this electricity liquid protective valve DF1 is serially connected in the hydraulic circuit of hoisting crane; when the main control system of limiter of moment is received the on-off signal of second place sensor KM2 transmission; transmit control signal also to when transmitting control signal to warning device electric liquid protective valve DF1; electricity liquid protective valve DF1 receives the hydraulic circuit that cuts off hoisting crane after signal; stop in time the release of steel rope; guarantee the safe handling of hoisting crane, avoided unnecessary economic loss.
Accompanying drawing explanation
Below in conjunction with accompanying drawing, the present invention will be further described in detail:
Fig. 1 is scheme of installation of the present invention;
Fig. 2 is the right elevation of Fig. 1;
Fig. 3 is the electrical block diagram of embodiment mono-;
Fig. 4 is the electrical block diagram of embodiment bis-.
The specific embodiment
Embodiment mono-
As shown in Figure 1 and Figure 2, the anti-overdischarging protector of crane rope, comprise primary importance sensor KM1, second place sensor KM2, warning device, limiter of moment main control system and power supply, described primary importance sensor KM1 is fixed in the Ya Sheng mechanism that comprises press rope wheel and support, described second place sensor KM2 is arranged at by mounting rod on the cable drum outer circumference surface that is wound with steel rope, and the primary importance sensor KM1 in the present embodiment and second place sensor KM2 all can be approach switch, as shown in Figure 3, one end of the open contact KM1.1 of described primary importance sensor KM1 and connect one end of normally closed contact KM2.1 of described second place sensor KM2 after be connected with described positive source, the other end of the open contact KM1.1 of described primary importance sensor KM1 is connected with the first PORT COM of described limiter of moment main control system, the other end of the normally closed contact KM2.1 of described second place sensor KM2 is connected with the second PORT COM of described limiter of moment main control system, the first control port of described limiter of moment main control system is connected with one end of described warning device, the other end of described warning device is connected with described power cathode, in the present embodiment, described warning device comprises buzzer phone DL1, the input end of described buzzer phone DL1 is the input end of described warning device, the mouth of described buzzer phone DL1 is the mouth of described warning device, in addition, described warning device also can comprise Warning light, and described Warning light can be attempted by the two ends of described buzzer phone DL1, in the present embodiment, described anti-Cross prevention system also can comprise electric liquid protective valve DF1, one end of described electric liquid protective valve DF1 is connected with the second control port of described limiter of moment main control system, the other end of described electric liquid protective valve DF1 is connected with described power cathode, described electric liquid protective valve DF1 is serially connected in the hydraulic circuit of hoisting crane, electricity liquid protective valve DF1 mono-must electricly will disconnect the hydraulic circuit of controlling winding plant in hoisting crane, makes steel rope at once stop discharging.
Anti-Cross prevention system architecture in the present embodiment is simple, and accuracy of detection is higher, improves to realize and steel rope is carried out to anti-mistake put and detect and protection on the basis on existing limiter of moment.
Embodiment bis-
In embodiment mono-; system is achieved carries out the function of anti-Cross prevention and the mode of operation of limiter of moment is closely bound up to steel rope; and in practical operation; sometimes can there is the situation of power-off in limiter of moment; and then can affecting anti-Cross prevention system, that the mistake of steel rope is put to state-detection is inaccurate; and anti-Cross prevention system in the present embodiment has overcome this shortcoming; different from embodiment mono-: in the present embodiment, to have increased control relay KJ1; all devices all do not rely on limiter of moment and carry out work, and physical circuit is as follows:
One end of the open contact KM1.1 of described primary importance sensor KM1 and connect one end of open contact KJ1.1 of described control relay KJ1 after be connected with positive source, the other end of open contact KJ1.1 and the input end of described warning device of described control relay KJ1 are connected, the other end of the open contact KM1.1 of described primary importance sensor KM1 is connected with one end of the normally closed contact KM2.1 of described second place sensor KM2, the other end of the normally closed contact KM2.1 of described second place sensor KM2 is connected with one end of the coil KJ1.2 of described control relay KJ1, the other end of the coil KJ1.2 of described control relay KJ1 and connect the mouth of described warning device after be connected with power cathode, primary importance sensor KM1 is for detection of the position of Ya Sheng mechanism, second place sensor KM2 is for detection of the folding and unfolding state of a certain circle (as the last lap) steel rope being wound around on cable drum, in the process of crane hoisting weight, release along with steel rope, the displacement meeting of the actuator in Ya Sheng mechanism changes, and the number of turns of this displacement and steel rope is certain proportion, when steel rope is released into a fixing turn (as last lap), actuator in Ya Sheng mechanism enters the detection range of primary importance sensor KM1, primary importance sensor KM1 action, its open contact KM1.1 is closed, second place sensor KM2 obtains electric, its normally closed contact KM2.1 disconnects, now second place sensor KM2 detects the folding and unfolding state of remaining a certain circle (as last lap) steel rope in real time, when this circle steel rope being detected, discharge when complete, the normally closed contact KM2.1 closure that is the second place sensor KM2 of off-state, now, the coil KJ1.2 of control relay KJ1 obtains electric, its open contact KJ1.1 is closed, warning device obtains the electric alerting signal of sending, remind staff to take action in time, guarantee that equipment can not cause damaging because of excessive release of steel wire rope, above-mentioned anti-Cross prevention system architecture is simple, impact resistance and anti-vibration ability are better, and accuracy of detection is high, do not rely on limiter of moment in operational process completely, be the normal operation that the use state of limiter of moment does not affect this device completely, there is extremely strong practicality.
Anti-Cross prevention system in the present embodiment has independent starting, stop loop, does not rely on the running state of limiter of moment, in the situation that limiter of moment does not power on, still can normally work; By reference to the accompanying drawings embodiments of the invention are explained in detail above, but the present invention is not limited to above-described embodiment, in the ken possessing those of ordinary skills, can also under the prerequisite that does not depart from aim of the present invention, makes various variations.
Claims (4)
1. the anti-overdischarging protector of crane rope, it is characterized in that: comprise primary importance sensor KM1, second place sensor KM2, warning device, limiter of moment main control system and power supply, described primary importance sensor KM1 is fixed in the Ya Sheng mechanism that comprises press rope wheel and support, and described second place sensor KM2 is arranged on the cable drum outer circumference surface that is wound with steel rope by mounting rod;
One end of the open contact KM1.1 of described primary importance sensor KM1 and connect one end of normally closed contact KM2.1 of described second place sensor KM2 after be connected with described positive source, the other end of the open contact KM1.1 of described primary importance sensor KM1 is connected with the first PORT COM of described limiter of moment main control system, the other end of the normally closed contact KM2.1 of described second place sensor KM2 is connected with the second PORT COM of described limiter of moment main control system, the first control port of described limiter of moment main control system is connected with one end of described warning device, the other end of described warning device is connected with described power cathode.
2. the anti-overdischarging protector of crane rope according to claim 1; it is characterized in that: described anti-Cross prevention system also comprises electric liquid protective valve DF1; one end of described electric liquid protective valve DF1 is connected with the second control port of described limiter of moment main control system, and the other end of described electric liquid protective valve DF1 is connected with described power cathode.
3. the anti-overdischarging protector of crane rope according to claim 1 and 2; it is characterized in that: described warning device comprises buzzer phone DL1; the input end of described buzzer phone DL1 is the input end of described warning device, the mouth that the mouth of described buzzer phone DL1 is described warning device.
4. the anti-overdischarging protector of crane rope according to claim 1 and 2, is characterized in that: described primary importance sensor KM1 and described second place sensor KM2 are approach switch.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410299775.3A CN104085803B (en) | 2014-06-30 | 2014-06-30 | The anti-overdischarging protector of crane rope |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410299775.3A CN104085803B (en) | 2014-06-30 | 2014-06-30 | The anti-overdischarging protector of crane rope |
Publications (2)
| Publication Number | Publication Date |
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| CN104085803A true CN104085803A (en) | 2014-10-08 |
| CN104085803B CN104085803B (en) | 2016-03-30 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201410299775.3A Active CN104085803B (en) | 2014-06-30 | 2014-06-30 | The anti-overdischarging protector of crane rope |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2815997Y (en) * | 2005-05-25 | 2006-09-13 | 四川长江工程起重机有限责任公司 | Crane hoisting over fall prevention device |
| CN201942463U (en) * | 2010-12-31 | 2011-08-24 | 徐州重型机械有限公司 | Crane and winding steel wire rope over-releasing-prevention protection device thereof |
| CN202897903U (en) * | 2012-11-20 | 2013-04-24 | 抚顺起重机制造有限责任公司 | Winch steel wire rope over release prevention device for crawler crane |
| DE202012009836U1 (en) * | 2012-10-15 | 2014-01-16 | Liebherr-Werk Ehingen Gmbh | Device for transporting persons by means of a crane - Crane with device for transporting persons |
| CN204185160U (en) * | 2014-06-30 | 2015-03-04 | 长治清华机械厂 | The anti-overdischarging protector of a kind of crane rope |
-
2014
- 2014-06-30 CN CN201410299775.3A patent/CN104085803B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2815997Y (en) * | 2005-05-25 | 2006-09-13 | 四川长江工程起重机有限责任公司 | Crane hoisting over fall prevention device |
| CN201942463U (en) * | 2010-12-31 | 2011-08-24 | 徐州重型机械有限公司 | Crane and winding steel wire rope over-releasing-prevention protection device thereof |
| DE202012009836U1 (en) * | 2012-10-15 | 2014-01-16 | Liebherr-Werk Ehingen Gmbh | Device for transporting persons by means of a crane - Crane with device for transporting persons |
| CN202897903U (en) * | 2012-11-20 | 2013-04-24 | 抚顺起重机制造有限责任公司 | Winch steel wire rope over release prevention device for crawler crane |
| CN204185160U (en) * | 2014-06-30 | 2015-03-04 | 长治清华机械厂 | The anti-overdischarging protector of a kind of crane rope |
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| Publication number | Publication date |
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| CN104085803B (en) | 2016-03-30 |
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Address after: 046012 mailbox, Changzhi, Shanxi, 6 Co-patentee after: China Academy of Launch Vehicle Technology Patentee after: Shanxi spaceflight Qinghua Equipment Co., Ltd. Address before: 046012 mailbox, Changzhi, Shanxi, 6 Co-patentee before: China Academy of Launch Vehicle Technology Patentee before: Qinghua Machinery Plant, Changzhi |
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