CN201580908U - Overload protecting system of crane lifting transmission chain - Google Patents
Overload protecting system of crane lifting transmission chain Download PDFInfo
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- CN201580908U CN201580908U CN2009202875981U CN200920287598U CN201580908U CN 201580908 U CN201580908 U CN 201580908U CN 2009202875981 U CN2009202875981 U CN 2009202875981U CN 200920287598 U CN200920287598 U CN 200920287598U CN 201580908 U CN201580908 U CN 201580908U
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Abstract
The utility model discloses an overload protecting system of a crane lifting transmission chain, which comprises a trolley frame, a torque limiting coupling, a fixed pulley set, a balancing arm and a steel wire rope. The characteristics are as follows: a speed-reducing device or two speed-reducing devices which are symmetrically arranged are installed on the trolley frame so as to form a single-stage/double-stage brake system. A low-speed end of a speed reducer is connected with a winding drum set, and a high-speed end is connected with a motor in single-direction and /or in double-direction through a shaft coupling I, a brake wheel coupling II and the torque limiting coupling; the motor and the winding drum set are respectively provided with an encoder. During overloading, the change of the speed ratio of the two encoders are utilized, meanwhile, the system is controlled in a participating way through the preferredly-selected information, then, the power supply of the motor is cut off, an emergency brake is started, and a work brake is braked at the same time, so as to keep load safely. During electrical fault, the force on the transmission chain is limited through the slip of the torque limiting coupling between the motor and the speed reducer, so as to realize the safety protection on the machine.
Description
Technical field
The utility model relates to and having at the chassis fixing or that movably walk on crane span structure or the door frame or the hoisting crane of dolly, is used in field such as nuclear power, aerospace, metallurgy or the high hoisting crane of security requirement that important place and hazardous environment use.
Background technology
Hoisting crane such as polar crane, the fuel handling hoisting crane etc. of the dangerous load of handling are the very high weight-lifting equipments of a kind of safety, reliability requirement in the nuclear station.Dangerous the falling of load of this class weight-lifting equipment will be caused serious accident, the multiple tracks fender guard will be set in design avoid this class accident to take place.But learn, have that to surpass 80% accident be because suspension hook is rushed to summit or load is hung serious overload such as storehouse and caused by the analysis of Crane Load being fallen the case accident causation although be provided with multinomial fender guard on the hoisting crane.
Traditional lifting mechanism causes suspension hook to be rushed to summit or load when hanging serious overload phenomenon such as storehouse when electrical accidents such as limes superiors limit switch, over travel limit switch, load transducer be malfunctioning occurring; can not realize protection, will cause the accident that messenger chain is badly damaged even generation load is fallen the messenger chain that hoists.Therefore, in system, increase the one-level messenger chain overload protection system that hoists, solve the safety problem that traditional lifting mechanism occurs, extremely urgent.
Summary of the invention
The purpose of this utility model is, by increasing the one-level messenger chain overload protection system that hoists, solves traditional safety problem that lifting mechanism occurred, and further improves the safe reliability of hoisting crane.
Technical solution of the present utility model is achieved in that
A kind of crane hoisting messenger chain overload protection system, comprise trolley frame, moment restriction coupler, the fixed pulley group, equilibrium arm and steel rope, it is characterized in that: reductor I is housed on the trolley frame wherein, its low speed end connects the reel group, the other end of reel group is equipped with sure brake, the axle head that goes out of described reel group then is equipped with coder: the speed end of retarder I has a left side, right two shafts, dress brake wheel coupler II on the shaft of a left side, its right shaft is then adorned brake wheel coupler I, described brake wheel coupler I, the wheel side of II then is equipped with service brake and accident brake respectively; Described brake wheel coupler I is connected with electrical motor by axle I and moment restriction coupler; Fixing steel rope on the described reel group is connected with adaptor union through fixed pulley group, suspension hook group, and adaptor union then is connected with equilibrium arm by load transducer; When system overloads, at first detection signal is passed to electric-control system and carry out elementary protection by load transducer, electric-control system sends instruction according to the overload quantity setting value, cuts off the power supply of the electrical motor that hoists, the brake application braking simultaneously of accident brake, service brake, sure brake; Elementary protection was lost efficacy, and overload quantity continues to increase, and when it increased to the moment setting value of moment restriction coupler, moment restriction coupler began to skid, and detector switch I is stirred in the switch trigger gear displacement on the moment restriction coupler, sends breakdown signal a; Meanwhile, because coder in the electrical motor and coder detect high speed shaft in the described messenger chain and the revolution ratio of slow-speed shaft changes, be judged as the messenger chain destructive malfunction, send breakdown signal b, preferentially choose the breakdown signal participation system control that transmits by electric-control system, send instruction, cut off the lifting motor power supply, the brake application braking simultaneously of emergency governor, service brake, sure brake, safety maintains load.
Compared with prior art, the utility model has the advantages that conspicuously, mainly show:
1, when limes superiors limit switch, over travel limit switch be malfunctioning etc. when electrical accident causes suspension hook to be rushed to summit, can realize protection to the messenger chain that hoists;
2, hang the phenomenons that cause seriously overloading such as storehouse or load transducer be malfunctioning when taking place when load, can realize protection the messenger chain that hoists;
3, simple in structure, good reliability.Be used for domestic third generation nuclear station, can save huge Patent project expense, for enterprise's year is created more than 300 ten thousand dollars of economic benefits.
Description of drawings
The utility model drawings attached 2 width of cloth, wherein:
Fig. 1 is a structural representation of the present utility model;
Fig. 2 is the A-A cutaway view of Fig. 1.
In the drawings: 1, trolley frame 2, speed reduction gearing I 3, fixed pulley group 4, equilibrium arm 5, reel group 6, brake wheel coupler I 7, brake wheel coupler II 8, accident brake 9, service brake 10, axle I 11, detector switch I 12, moment restriction coupler 13, electrical motor 14, sure brake 15, load transducer 16, adaptor union 17, suspension hook group 18, steel rope 19, coder 20, electric-control system.
The specific embodiment
A kind of crane hoisting messenger chain overload protection system as Fig. 1～shown in Figure 2; form by trolley frame 1, speed reduction gearing I2, fixed pulley group 3, equilibrium arm 4, reel group 5, brake wheel coupler I6, brake wheel coupler II7, accident brake 8, service brake 9, axle I10, detector switch I11, moment restriction coupler 12, electrical motor 13, sure brake 14, load transducer 15, adaptor union 16, suspension hook group 17, steel rope 18, coder 19, electric-control system 20, see Fig. 1 and Fig. 2.
Its principle of work is as follows:
At first be transferred to and carry out elementary protection in the electric-control system 20 by the detection signal of load transducer 15; when overload quantity reaches setting value; electric-control system 20 sends instruction; the cut-out motor power that hoists; accident brake 8, service brake 9, sure brake 14 brake application braking simultaneously, safety maintains load.If described elementary defencive function lost efficacy; do not stop the rotation of lifting mechanism electrical motor; this moment, electrical motor continued to increase moment of torsion to messenger chain; overload quantity continues to increase; moment restriction coupler 12 begins to skid when increasing to the moment setting value of moment restriction coupler 12; detector switch I11 is stirred in switch actuating device displacement on the coupler 12 of moment restriction simultaneously, sends failure message a.Meanwhile, coder in the electrical motor 13 and coder 19 are compared to the rotating speed of high speed shaft in the messenger chain and slow-speed shaft in real time, when above-mentioned moment restriction coupler 12 begins to skid, revolution ratio between high speed shaft and the slow-speed shaft changes, send failure message b, electric-control system 20 is chosen the failure message participation system control that transmits earlier from failure message a and failure message b, send instruction, the cut-out motor power that hoists, accident brake 8, service brake 9, sure brake 14 brake application braking simultaneously, safety maintains load.
Described brakeage process is confined to promptly, the drg sequence of operation under the accident condition.But its brake application braking procedure is not limited to above order, according to the requirement of function setting and electric-control system, also can adopt following sequence of operation:
1. sure brake 14 first brake applications, the order of accident brake 8, service brake 9 back brake applications;
2. sure brake 14 first brake applications, service brake 9 and accident brake 8 be the priority brake application successively, sure brake 14 and service brake 9 are successively opened or service brake 9 and sure brake 14 are successively opened successively successively then, control 8 pairs of load of accident brake then and carry out step-down operation.
In the said process brakeage process be confined to promptly, the drg sequence of operation under the accident condition.In addition as required, also can be after drg safety keep main load, service brake 9 is opened, and controls 8 pairs of load of accident brake then and carries out step-down operation.
Claims (1)
1. crane hoisting messenger chain overload protection system, comprise trolley frame (1), moment restriction coupler (12), fixed pulley group (3), equilibrium arm (4) and steel rope (18), it is characterized in that: reductor I (2) is housed on the trolley frame wherein (1), its low speed end connects reel group (5), the other end of reel group (5) is equipped with sure brake (14), and the axle head that goes out of described reel group (5) then is equipped with coder (9); The speed end of retarder I (2) has left and right two shafts, dress brake wheel coupler II (7) on the shaft of a left side, its right shaft is then adorned brake wheel coupler I (6), described brake wheel coupler I, the wheel side of II (6,7) then is equipped with service brake (9) and accident brake (8) respectively; Described brake wheel coupler I (6) is connected with electrical motor (13) with moment restriction coupler (12) by axle I (10); Described reel group (5) goes up fixedly steel rope (18), is connected with adaptor union (16) through fixed pulley group (3), suspension hook group (17), and adaptor union (16) then is connected with equilibrium arm (4) by load transducer (15).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009202875981U CN201580908U (en) | 2009-12-10 | 2009-12-10 | Overload protecting system of crane lifting transmission chain |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009202875981U CN201580908U (en) | 2009-12-10 | 2009-12-10 | Overload protecting system of crane lifting transmission chain |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201580908U true CN201580908U (en) | 2010-09-15 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009202875981U Expired - Fee Related CN201580908U (en) | 2009-12-10 | 2009-12-10 | Overload protecting system of crane lifting transmission chain |
Country Status (1)
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| CN (1) | CN201580908U (en) |
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102530749A (en) * | 2012-01-17 | 2012-07-04 | 青岛港（集团）有限公司 | Novel crane luffing mechanism |
| CN102701081A (en) * | 2012-05-16 | 2012-10-03 | 苏州汇川技术有限公司 | Frequency converter overload protection system and method thereof |
| CN105060120A (en) * | 2015-08-12 | 2015-11-18 | 上海核工程研究设计院 | High-low speed shaft transmission ratio protection device and method of loading and unloading machine lifting mechanism |
| CN105135466A (en) * | 2015-08-12 | 2015-12-09 | 航天科工哈尔滨风华有限公司 | Air preheater radial sealing control mechanism having over-moment protection device |
| CN105366551A (en) * | 2015-12-21 | 2016-03-02 | 黄运新 | Brake safety braking monitoring system and crane hoisting mechanism |
| CN106185628A (en) * | 2016-08-29 | 2016-12-07 | 润邦卡哥特科工业有限公司 | A kind of crane hoisting mechanism |
| CN107188044A (en) * | 2017-07-05 | 2017-09-22 | 太原科技大学 | A kind of craning weight of same is weighed and overload protective device |
| CN111465573A (en) * | 2017-12-18 | 2020-07-28 | 株式会社多田野 | Crane with a movable crane |
| CN112357799A (en) * | 2020-11-20 | 2021-02-12 | 中国人民解放军63921部队 | Crane lifting and winding device and method for rocket docking |
| CN112520619A (en) * | 2020-12-16 | 2021-03-19 | 大冶特殊钢有限公司 | Crown block brake mounting structure capable of being used for tonnage of 15T to 50T and crown block |
-
2009
- 2009-12-10 CN CN2009202875981U patent/CN201580908U/en not_active Expired - Fee Related
Cited By (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102530749A (en) * | 2012-01-17 | 2012-07-04 | 青岛港（集团）有限公司 | Novel crane luffing mechanism |
| CN102701081A (en) * | 2012-05-16 | 2012-10-03 | 苏州汇川技术有限公司 | Frequency converter overload protection system and method thereof |
| CN102701081B (en) * | 2012-05-16 | 2015-06-10 | 苏州汇川技术有限公司 | Frequency converter overload protection system and method thereof |
| CN105060120A (en) * | 2015-08-12 | 2015-11-18 | 上海核工程研究设计院 | High-low speed shaft transmission ratio protection device and method of loading and unloading machine lifting mechanism |
| CN105135466A (en) * | 2015-08-12 | 2015-12-09 | 航天科工哈尔滨风华有限公司 | Air preheater radial sealing control mechanism having over-moment protection device |
| CN105366551B (en) * | 2015-12-21 | 2024-03-01 | 黄运新 | Brake safety braking monitoring system and crane lifting mechanism |
| CN105366551A (en) * | 2015-12-21 | 2016-03-02 | 黄运新 | Brake safety braking monitoring system and crane hoisting mechanism |
| CN106185628A (en) * | 2016-08-29 | 2016-12-07 | 润邦卡哥特科工业有限公司 | A kind of crane hoisting mechanism |
| CN107188044A (en) * | 2017-07-05 | 2017-09-22 | 太原科技大学 | A kind of craning weight of same is weighed and overload protective device |
| CN111465573A (en) * | 2017-12-18 | 2020-07-28 | 株式会社多田野 | Crane with a movable crane |
| CN111465573B (en) * | 2017-12-18 | 2022-06-03 | 株式会社多田野 | Crane with a movable crane |
| CN112357799A (en) * | 2020-11-20 | 2021-02-12 | 中国人民解放军63921部队 | Crane lifting and winding device and method for rocket docking |
| CN112357799B (en) * | 2020-11-20 | 2023-12-15 | 中国人民解放军63921部队 | Lifting winch device and method for rocket docking crane |
| CN112520619A (en) * | 2020-12-16 | 2021-03-19 | 大冶特殊钢有限公司 | Crown block brake mounting structure capable of being used for tonnage of 15T to 50T and crown block |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| ASS | Succession or assignment of patent right |
Owner name: DALIAN HUARUI HEAVY INDUSTRY GROUP CO., LTD. Free format text: FORMER OWNER: HUARUI CO., LTD., DALIAN Effective date: 20120405 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| COR | Change of bibliographic data |
Free format text: CORRECT: ADDRESS; FROM: 116028 DALIAN, LIAONING PROVINCE TO: 116013 DALIAN, LIAONING PROVINCE |
|
| TR01 | Transfer of patent right |
Effective date of registration: 20120405 Address after: 116013 Bayi Road, Xigang District, Liaoning, China, No. 169, No. Patentee after: Dalian Huarui Heavy Industry Group Co., Ltd. Address before: 116028 No. 169 Bayi Road, Xigang District, Liaoning, Dalian Patentee before: Huarui Co., Ltd., Dalian |
|
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20100915 Termination date: 20171210 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |