CN104671096A - Method and equipment for rapidly and conveniently detecting load lifting limiter - Google Patents
Method and equipment for rapidly and conveniently detecting load lifting limiter Download PDFInfo
- Publication number
- CN104671096A CN104671096A CN201510071872.1A CN201510071872A CN104671096A CN 104671096 A CN104671096 A CN 104671096A CN 201510071872 A CN201510071872 A CN 201510071872A CN 104671096 A CN104671096 A CN 104671096A
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- China
- Prior art keywords
- load lifting
- shock absorber
- arm
- lifting limiter
- crossbeam
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66C—CRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
- B66C13/00—Other constructional features or details
- B66C13/16—Applications of indicating, registering, or weighing devices
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66C—CRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
- B66C15/00—Safety gear
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66C—CRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
- B66C2700/00—Cranes
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Control And Safety Of Cranes (AREA)
Abstract
The invention relates to equipment for rapidly and conveniently detecting a load lifting limiter. The equipment comprises a balancing weight, a cross beam, a left arm, a right arm, a left buffer device, a right buffer device and force measurement sensors, wherein the balancing weight is arranged under the cross beam, a flying ring is arranged in the middle of the upper end of the cross beam, the left arm and the right arm are arranged at two ends of the cross beam, the left buffer device is arranged at one end, away from the cross beam, of the left arm, the right buffer device is arranged at one end, away from the cross beam, of the right arm, the force measurement sensors are arranged between the left arm and the left buffer device and/or between the right arm and the right buffer device. The invention also relates to a method for rapidly and conveniently detecting the load lifting limiter, and the method adopts the equipment for rapidly and conveniently detecting the load lifting limiter. The equipment has the beneficial effects that the structure is simple and light, can be operated conveniently and can be used for transportation without other hoisting equipment.
Description
Technical field
The present invention relates to method and equipment thereof that a kind of rapid and convenient detects load lifting limiter.
Background technology
LOAD CELLS detects hoisting weight, and output signal is amplified by amplifier.Signal after amplification sends into Weighting and Controlling instrument.Weighting and Controlling instrument compares differentiation according to weight signal and " pre-alarm ", " delayed alarm and control " and " report to the police immediately and control " three pivot weight signal sets values, exports corresponding state control signal.Three pivot weight signal sets values are set in 90%, 105% and 110% of rated load respectively.
In the TSG Q7015-2008 " elevator machinery periodical survey rule " promulgated on August 7th, 2008, B9.6.2 equipment in use carries out Reliability of Microprocessor inspection; Rated load three kinds of test mass of 0.9 times, 1.05 times and 1.1 times just must be provided when will carry out Reliability of Microprocessor inspection to it in actual survey process respectively, but often applying unit is difficult to provide suitable test mass, in addition because steel rope is consumable accessory, more change steel rope need remove load lifting limiter, and reinstall debugging again after changing, so the reliability of load lifting limiter carries out test mass test again, so often increases the weight of the economical burden of enterprise.
Based on above-mentioned actual conditions, after No. 141 " TSG Q7015-2008 " elevator machinery periodical survey rule " number one amendment " revision in 2010, B9.6.2 is adjusted to equipment in use and checks whether and arrange load lifting limiter, whether by short circuit.This measure is the caving-in bash in reality testing, also reflects the urgency and essentiality that work out one " can rapid and convenient detect the equipment of crane load killer precision and the situation of installation " simultaneously.
We investigate, retrieved the present situation of carrying out correlative study both at home and abroad in lifting reason killer context of detection.The type test and all having each certification body of the inspection of load lifting limiter in hoisting crane supervision and inspection of lifting reason killer is carried out, but to few for the method for load lifting limiter in periodical survey, particularly blank be can be described as to the precision of load lifting limiter and the detection of installing condition.
Existing load lifting limiter in use Problems existing, using electric block as the hoisting crane of lifting mechanism, the load lifting limiter of general apolegamy has three kinds: side-compression, plate ring type, current type are wherein in the majority with side pressure type elevating capacity limiter, mainly because it has low, the easy installation of cost, advantage that commonality is good; But also find in real work that it exists following problem of can not ignore:
(1) more change steel rope time need repetition Installation and Debugging.Because side pressure type elevating capacity limiter will be fixed on a steel cord, and steel rope is consumable accessory, and more change steel rope need remove load lifting limiter, and reinstalls debugging again, to reach warning and the limit for tonnage operating point of code requirement after changing.The installing/dismounting of such repetition, not only constantly can reduce stability and the service life of load lifting limiter, and can increase every cost of applying unit, for actual production brings inconvenience.In addition, in order to avoid trouble, some enterprise only installs load lifting limiter and does not debug, and load lifting limiter is performed practically no function, loses safety protection function.
(2) stability and reliability are not strong.Because steel rope is in continuous loading process, steel rope attenuates, cause sensor binding bolt to loosen, and have impact on the stressing conditions of load lifting limiter, and overload operating point is changed; When production environment is more severe, as high temperature, dust, the environment such as to be exposed to the sun often cause the inefficacy, operating point drift etc. of electronic devices and components, these all cause potential safety hazard to actual production.
(3) fragile.Hoisting crane play weight motion time, load lifting limiter can not stop dynamic along with steel rope, occurs that signal wire (SW) disconnects, killer such as to break at the problem sometimes.In addition, after the hoisting limiter of electric block lost efficacy, load lifting limiter can be involved in suspension ring pulley with steel rope, easily causes damage.
After occurring that above problem is repaired, need regularly or aperiodically to detect the precision of load lifting limiter and accuracy and check, otherwise just affect the safety protection function of load lifting limiter.
Summary of the invention
Technical matters to be solved by this invention is to provide method and the equipment thereof that a kind of rapid and convenient detects load lifting limiter, solves the deficiencies in the prior art.
The technical scheme that the present invention solves the problems of the technologies described above is as follows: a kind of rapid and convenient detects load lifting limiter equipment, and it comprises clump weight, crossbeam, left arm, right arm, left shock absorber, right shock absorber, force transducer; Clump weight is arranged on the below of crossbeam; The upper center of crossbeam is provided with the suspension ring for clump weight of conveniently slinging; Left arm, right arm are separately positioned on the two ends of crossbeam, and left arm and right arm are symmetrical arranged about suspension ring; Left shock absorber is arranged on left arm one end away from crossbeam, and right shock absorber is arranged on right arm one end away from crossbeam; Force transducer is provided with between left arm and left shock absorber and/or between right arm and right shock absorber; Force transducer for detecting the force signal that left arm and/or right arm bear, and changes electric signal into force signal.
The technical scheme that the present invention solves the problems of the technologies described above is as follows: a kind of rapid and convenient detects the method for load lifting limiter, and the method uses above-mentioned a kind of rapid and convenient to detect load lifting limiter equipment; Step one: open tested hoisting crane, opens described crane hoisting mechanism to girder span centre position, transfers the suspension hook of tested hoisting crane; Step 2: suspension hook is connected with suspension ring; Step 3: described hoisting crane to rise suspension hook with First Speed, and described detection load lifting limiter equipment is sling, when the described left shock absorber of detection load lifting limiter equipment, the upper end of right shock absorber contact with the lower surface of the crossbeam at hoisting crane place, suspension hook is stopped to rise; Step 4: described hoisting crane to rise suspension hook with second speed, and second speed is less than First Speed; Telltale display weight, when reaching the weight needing to detect, stops suspension hook rising.
The invention has the beneficial effects as follows: the present invention is simple and light and easy and simple to handle, thus can not carry by other weight-lifting equipments.Corresponding test mass can not be reoffered after using this product, according to the weight of this product display screen display compared with the weight that hoisting crane shows, thus can detect whether the precision of load lifting limiter on hoisting crane and mounting means meet related request easily.
Accompanying drawing explanation
Fig. 1 is structural representation of the present invention;
Fig. 2 is the lateral plan of Fig. 1;
Fig. 3 is the structural representation of another embodiment of the present invention.
Detailed description of the invention
Be described principle of the present invention and feature below in conjunction with accompanying drawing, example, only for explaining the present invention, is not intended to limit scope of the present invention.
As shown in Figure 1, Figure 2, Figure 3 shows, a kind of rapid and convenient detects load lifting limiter equipment, and it comprises clump weight 1, crossbeam 2, left arm 4, right arm 5, left shock absorber 6, right shock absorber 7, force transducer 8; Described clump weight 1 is arranged on the below of described crossbeam 2; The upper center of described crossbeam 2 is provided with the suspension ring 3 for conveniently slinging; Described left arm 4, described right arm 5 are separately positioned on the two ends of described crossbeam 2, and described left arm 4 and described right arm 5 are symmetrical arranged about described suspension ring 3; Described left shock absorber 6 is arranged on described left arm 4 one end away from described crossbeam 2, and described right shock absorber 7 is arranged on described right arm 5 one end away from described crossbeam 2; Force transducer 8 is provided with between described left arm 4 and described left shock absorber 6 and/or between described right arm 5 and described right shock absorber 7; Described force transducer 8 for detecting the force signal that described left arm 4 and/or described right arm 5 bear, and changes electric signal into described force signal.
Clump weight 1 can by numerous single heavy be that the cast iron of 20Kg is formed, adjust integral central position of the present invention by the size adjusting counterweight when being mainly used in lifting by crane and be positioned at hoisting point position, thus ensure that integral structure can steadily rise.
As shown in Figure 3, further: described force transducer 8 is set to two, and two described force transducers 8 are separately positioned between described left arm 4 and described left shock absorber 6, between described right arm 5 and described right shock absorber 7.Further: described force transducer 8 is strain-gauge force transducer 8.
Further: to be all detachably fixedly connected with by bolt between described left arm 4, described right arm 5 with described crossbeam 2.
Further: described left shock absorber 6, right shock absorber 7 all adopt YK-HYD4-50 type water bumper.Described left shock absorber 6, right shock absorber 7 can bear the gravity of 8 tons, and cushion stroke is 50mm, can play the effect of buffering when left arm 4 contacts with girder with right arm 5, and reduce impulsive force, girder is the crossbeam at tested Jack place.
The present invention also comprises projector, receptor, treater, display terminal; Described projector is used for described electric signal to be transmitted to described receptor by wireless mode; Described receptor receives the described electric signal that described projector is launched, and described electric signal is sent to described treater; Described treater obtains weight signal to described electric signal after amplification, A/D conversion, and described weight signal is sent to described telltale.Such design has weight display, radio remote Distance Transmission, feature simple and light and easy and simple to handle.
The present invention also discloses a kind of method that rapid and convenient detects load lifting limiter, the method utilizes the lifting mechanism of tested hoisting crane to promote and detects load lifting limiter equipment, by the power originally needing applied load downward, power is upwards converted into by check implement, be applied on the girder of hoisting crane, thus reach and exempt to do the object that load just can detect load lifting limiter precision; The method uses above-mentioned a kind of rapid and convenient to detect load lifting limiter equipment;
Step one: open tested hoisting crane, opens the lifting mechanism (dolly or electric block) of described hoisting crane to girder span centre position, transfers the suspension hook of described tested hoisting crane;
Step 2: described suspension hook is connected with described suspension ring 3;
Step 3: described hoisting crane to rise described suspension hook with First Speed, and described detection load lifting limiter equipment is sling, when the described left shock absorber 6 of detection load lifting limiter equipment, the upper end of right shock absorber 7 contact with the lower surface of the crossbeam at described hoisting crane place, described suspension hook is stopped to rise;
Step 4: described hoisting crane to rise described suspension hook with second speed, and described second speed is less than described First Speed; Described telltale display weight, when reaching the weight needing to detect, stops described suspension hook to rise.If tested hoisting crane is single speed hoisting crane, then second speed is that the mode adopting crawl to rise rises.
Utilize lifting motor the present invention to be pulled up to contact with girder, when described left arm 4, described right arm 5 start stressed after, power is transferred to sensor makes sensor produce micro-change of voltage, after instrument amplifier amplifies, become digital signal through high-resolution A/D converter.Digital signal is directly read by one-chip computer, is converted into gravimetric value after treatment and shows on a display screen.
The present invention is simple and light and easy and simple to handle, thus can not carry by other weight-lifting equipments.Corresponding test mass can not be reoffered after using this product, according to the weight of this product display screen display compared with the weight that hoisting crane shows, thus can detect whether the precision of load lifting limiter on hoisting crane and mounting means meet related request easily.
The foregoing is only preferred embodiment of the present invention, not in order to limit the present invention, within the spirit and principles in the present invention all, any amendment done, equivalent replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (7)
1. rapid and convenient detects a load lifting limiter equipment, it is characterized in that: comprise clump weight (1), crossbeam (2), left arm (4), right arm (5), left shock absorber (6), right shock absorber (7), force transducer (8); Described clump weight (1) is arranged on the below of described crossbeam (2); The upper center of described crossbeam (2) is provided with the suspension ring (3) for conveniently slinging; Described left arm (4), described right arm (5) are separately positioned on the two ends of described crossbeam (2), and described left arm (4) and described right arm (5) are symmetrical arranged about described suspension ring (3); Described left shock absorber (6) is arranged on described left arm (4) one end away from described crossbeam (2), and described right shock absorber (7) is arranged on described right arm (5) one end away from described crossbeam (2); Described force transducer (8) is provided with between described left arm (4) and described left shock absorber (6) and/or between described right arm (5) and described right shock absorber (7); Described force transducer (8) for detecting the force signal that described left arm (4) and/or described right arm (5) bear, and changes electric signal into described force signal.
2. a kind of rapid and convenient detects load lifting limiter equipment according to claim 1, it is characterized in that: between described left arm (4) and described left shock absorber (6) and between described right arm (5) and described right shock absorber (7), be provided with described force transducer (8).
3. a kind of rapid and convenient detects load lifting limiter equipment according to claim 2, it is characterized in that: described force transducer (8) is strain-gauge force transducer (8).
4. a kind of rapid and convenient detects load lifting limiter equipment according to claim 1, it is characterized in that: described left arm (4), be all detachably fixedly connected with by bolt between described right arm (5) with described crossbeam (2).
5. a kind of rapid and convenient detects load lifting limiter equipment according to claim 1, it is characterized in that: described left shock absorber (6), right shock absorber (7) all adopt YK-HYD4-50 type water bumper.
6. according to any one of claim 1 to 5, a kind of rapid and convenient detects load lifting limiter equipment, it is characterized in that: also comprise projector, receptor, treater, display terminal; Described projector is used for described electric signal to be transmitted to described receptor by wireless mode; Described receptor receives the described electric signal that described projector is launched, and described electric signal is sent to described treater; Described treater obtains weight signal to described electric signal after amplification, A/D conversion, and described weight signal is sent to described telltale.
7. rapid and convenient detects a method for load lifting limiter, it is characterized in that: the method uses described a kind of rapid and convenient of any one of claim 1 to 6 to detect load lifting limiter equipment;
Step one: open tested hoisting crane, opens the lifting mechanism of described hoisting crane to girder span centre position, transfers the suspension hook of described hoisting crane;
Step 2: described suspension hook is connected with described suspension ring (3);
Step 3: described hoisting crane to rise described suspension hook with First Speed, and described detection load lifting limiter equipment is sling, when the left shock absorber (6) of described detection load lifting limiter equipment, the upper end of right shock absorber (7) contact with the lower surface of the crossbeam at described hoisting crane place, described suspension hook is stopped to rise;
Step 4: described hoisting crane to rise described suspension hook with second speed, and described second speed is less than described First Speed; Described telltale display weight, when reaching the weight needing to detect, stops described suspension hook to rise.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510071872.1A CN104671096A (en) | 2015-02-11 | 2015-02-11 | Method and equipment for rapidly and conveniently detecting load lifting limiter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510071872.1A CN104671096A (en) | 2015-02-11 | 2015-02-11 | Method and equipment for rapidly and conveniently detecting load lifting limiter |
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| Publication Number | Publication Date |
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| CN104671096A true CN104671096A (en) | 2015-06-03 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510071872.1A Pending CN104671096A (en) | 2015-02-11 | 2015-02-11 | Method and equipment for rapidly and conveniently detecting load lifting limiter |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5152183A (en) * | 1990-04-05 | 1992-10-06 | Mannesmann Aktiengesellschaft | Measurement system for loaded lifting rope |
| CN2890858Y (en) * | 2006-04-18 | 2007-04-18 | 杭州华新科技有限公司 | Lifting mechanism load test bench for crane |
| CN200954984Y (en) * | 2006-10-13 | 2007-10-03 | 李衍忠 | Suspension-type crane hoisting meter |
| CN202141559U (en) * | 2011-06-24 | 2012-02-08 | 常州市常欣电子衡器有限公司 | Calibration device for lifting capacity limiter force cell sensor |
| CN204454309U (en) * | 2015-02-11 | 2015-07-08 | 衢州市特种设备检验中心 | A kind of rapid and convenient detects load lifting limiter equipment |
-
2015
- 2015-02-11 CN CN201510071872.1A patent/CN104671096A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5152183A (en) * | 1990-04-05 | 1992-10-06 | Mannesmann Aktiengesellschaft | Measurement system for loaded lifting rope |
| CN2890858Y (en) * | 2006-04-18 | 2007-04-18 | 杭州华新科技有限公司 | Lifting mechanism load test bench for crane |
| CN200954984Y (en) * | 2006-10-13 | 2007-10-03 | 李衍忠 | Suspension-type crane hoisting meter |
| CN202141559U (en) * | 2011-06-24 | 2012-02-08 | 常州市常欣电子衡器有限公司 | Calibration device for lifting capacity limiter force cell sensor |
| CN204454309U (en) * | 2015-02-11 | 2015-07-08 | 衢州市特种设备检验中心 | A kind of rapid and convenient detects load lifting limiter equipment |
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| PB01 | Publication | ||
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| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20150603 |
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| RJ01 | Rejection of invention patent application after publication |