CN102718143A - Novel weighing device structure of shipbuilding gantry crane - Google Patents
Novel weighing device structure of shipbuilding gantry crane Download PDFInfo
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- CN102718143A CN102718143A CN2011100795679A CN201110079567A CN102718143A CN 102718143 A CN102718143 A CN 102718143A CN 2011100795679 A CN2011100795679 A CN 2011100795679A CN 201110079567 A CN201110079567 A CN 201110079567A CN 102718143 A CN102718143 A CN 102718143A
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Abstract
The invention discloses a novel weighing device structure of a shipbuilding gantry crane, characterized in that: the structure is provided with a pulley yoke, a fixed pulley shaft is fixed on the pulley yoke, no less than two fixed pulleys are sleeved on the fixed pulley shaft symmetrically; a weighing pulley yoke is sleeved on the fixed pulley shaft and arranged between the fixed pulleys, the lower end of the weighing pulley yoke is provided with a weighing pulley; the center of the weighing pulley is provided with a shaft pin sensor which can simultaneously serve as a pulley shaft, between the sensor and the pulley is sleeved with a shaft sleeve II, the side surface of the sensor is provided with a baffle plate, and the baffle plate is fixed on the weighing pulley yoke; a shaft sleeve I is sleeved on the sensor, and the bearing in the weighing pulley is arranged in the shaft sleeve I. The weighing device can weigh accurately, and is not affected by lifting height and the arrangement structure of lifting mechanism when weighing.
Description
Technical field
The present invention is specifically related to a kind of weighting apparatus structure, the novel weighting apparatus structure of particularly a kind of ship-building gantry crane.
Background technology
Present stage, when ship-building gantry crane is weighed to the weight of slinging, generally adopt bearing-type weighting apparatus or axial pin type weighting apparatus to weigh.
Bearing seat formula weighting apparatus, i.e. the installation shaft bearing formula sensor detection that realizes weighing on the hoisting drum supporting seat.This weighting apparatus main parts size is bearing cap shim, bearing seat, sensor, base, is provided with bearing, axle sleeve, logical lid and stifle in the bearing seat and uses so that drum shaft to be installed.Drum shaft is rotated in bearing seat, and the load of its drum shaft is delivered on the bearing seat through bearing during hoisting heavy.
Its principle of work: when the lifting mechanism lift heavy, the lift heavy that bears on the suspension hook is delivered to reel respectively through steel rope and above the fixed pulley group.Be generally two steel ropes above the reel, the every suffered power of steel rope is distributed according to multiplying power.This moment, the one side strong point of reel was bearing seat formula weighting apparatus place, and the sensor in the weighting apparatus is according to stressed big or small feedback signal.The load of sensor is relevant with the multiplying power of the size of hoisting capacity and steel rope, under static state, is installed in that the suffered power of sensor is in the bearing seat: P=Q/2m
Sensor Force Calculation formula according to top can know that the stressed size of sensor is relevant with lifted load and pulley block ratio.Wherein pulley block ratio is a certain value, and the P value that calculates is the stressed size of steel rope on the reel.Can know the stressed power that not only comprises steel rope in bearing seat place according to pattern is installed, also comprise the weight of reel deadweight and steel rope.Wherein reel deadweight is certain value, but the weight of steel rope increases the corresponding increasing of its weight with lifting altitude.So just brought sensor institute side load to change with lifting altitude; In addition because drum shaft is rotated the variation that the live load of bringing also influences its stressed size; Be difficult to safety and alerting signal value are set, strengthened potential safety hazard or be difficult to guarantee its maximum rated hoisting capacity according to certain value.
Adopt the axial pin type weighting apparatus on the leading sheave, be about to original leading sheave axle and replace, make that its leading sheave is stressed to act directly on above the axial pin type sensor axle, by the detection that realizes weighing of in-to-in sensor with the axial pin type sensor axle.This weighting apparatus main parts size is axial pin type sensor, axle sleeve, back-up ring, backing plate, axle head baffle plate.Steel rope passes leading sheave according to canoe along certain angle and position, and the power that acts on above the axial pin type sensor will be converted according to the angle that steel rope twines.Its principle of work: when the lifting mechanism lift heavy, act on the steel rope above the leading sheave, power is delivered to above the axial pin type sensor through pulley by winding angle and position.When weighing detection, carrying out initial value according to lift heavy amount, multiplying power and the steel rope component above the leading sheave sets.Lift heavy amount and multiplying power are converted out the power size above the every steel rope,, calculate the steel rope that passes through on the leading sheave component, be the stressed size above the axial pin type sensor along the pulley tangential direction again through the parallelogram principle of making a concerted effort.
Can know according to top principle of work, above the axial pin type sensor stressed only with walk around leading sheave on the steel rope angle relevant, do not have technology receiving lifting altitude to change the steel rope weight change and cause the problem that dynamometry is uneven in.But, leading sheave makes that actual component is too little because being changed by the steel rope angle.Follow the signal amplification of its sensor to make error bigger, be unfavorable for detecting exactly the variation of actual lift heavy amount equally.
Summary of the invention
The present invention provides a kind of ship-building gantry crane novel weighting apparatus, and purpose is to solve the prior art problem, provides a kind of and weighs accurately the weighting apparatus that not influenced by lifting altitude and lifting mechanism arrangement structure.
The present invention's technical scheme that adopts of dealing with problems is:
The novel weighting apparatus structure of ship-building gantry crane has pulley yoke, on pulley yoke, is fixed with fixed pulley axis, and the fixed pulley symmetry that is no less than two is set on the fixed pulley axis outward.On fixed pulley axis and be positioned at outside the fixed pulley middle and be arranged with the pulley yoke of weighing, the pulley yoke lower end of weighing is provided with the pulley of weighing.The pulley center of weighing is provided with the axial pin type sensor of while as sheave shaft, is arranged with axle sleeve II between sensor and the pulley, and sensors sides is provided with baffle plate, and baffle plate is fixed on the pulley yoke of weighing.
Outside sensor, be arranged with axle sleeve I, and the bearing in the pulley of weighing is positioned at axle sleeve I.
Beneficial effect of the present invention: ship-building gantry crane is because of its large span, hoisting capacity is big, lifting altitude is big characteristics, must guarantee that it weighs accurately, safety.The pulley of weighing is set separately as the dynamometry of sensor under pulley yoke, the drum shaft bearing formula sensor that has solved in the prior art one receives lifting altitude to change the uneven problem of dynamometry of the additional steel rope weight change of bringing.Also solved the error problem that after amplifying, be with by gained component signal gets too small at the sensor on the leading sheave.Guaranteed that the outside gained data of its force transducer are accurate, stable.The accuracy and the safety of its use have greatly been improved.
Description of drawings
Fig. 1 is a front view of the present invention;
Fig. 2 is a left view of the present invention;
Fig. 3 is a birds-eye view of the present invention;
Fig. 4 is the front view of axial pin type sensor.
The specific embodiment
Below in conjunction with accompanying drawing and specific embodiment the present invention is described further.
The novel weighting apparatus structure of ship-building gantry crane shown in Fig. 1, Fig. 2, Fig. 3 has pulley yoke 1, on pulley yoke 1, is fixed with fixed pulley axis 6, is no less than two outer being set on the fixed pulley axis 6 of fixed pulley 9 symmetries.On fixed pulley axis 6 and be positioned at and be arranged with the pulley yoke 7 of weighing outside the fixed pulley middle, pulley yoke 7 lower ends of weighing are provided with the pulley 4 of weighing.Pulley 4 centers of weighing are provided with simultaneously as the axial pin type sensor 5 of sheave shaft, are arranged with axle sleeve II 3 between sensor 5 and the pulley 4, the axle sleeve II 3 mutual fitted position of pulley 4 and sensor 5 that can guarantee to weigh.For preventing sensor 5 axial motions, be provided with baffle plate 8 in sensor 5 sides, baffle plate 5 is fixed on the pulley yoke of weighing, and can prevent sensor 5 axial motions to sensor 5 axial location.
For the pulley 4 that prevents to weigh moves vertically, outside sensor 5, be arranged with axle sleeve I, and the bearing in the pulley of weighing is positioned at axle sleeve I.2 couples of this axle sleeve I bearing axial location in the pulley 4 of weighing, the pulley 4 that prevents to weigh moves vertically.
Principle of work:
With one independently pulley be arranged on assembly pulley below as the pulley of weighing, solved the power taking value well and changed the problem of too little need that reach through amplifying signal.
When lifting mechanism handling weight, give the certain loading force value of pulley of weighing through the wire rope transfers that is wrapped on the pulley of weighing, pulley passes to axial pin type sensor 5 to loading force value D through axle sleeve I 2 by weighing.Independently weigh below can knowing according to the left view among Fig. 2 stressed symmetry of steel rope of the right and left on the pulley 4, whole loading force value D all acts on above the sensor 5.The detailed outside drawing of sensor among Fig. 4 has shown sensor as stressed sheave shaft, and structure stress obviously, accurately.The external coder control system of sensor end cable by programming control lifting mechanism lift heavy size, guarantees that the lifting mechanism overload warning accurately, in time.
In the lifting mechanism weighting apparatus structure design of shipbuilding gantry crane, conventional bearing seat formula weighing structure only is applicable to the gauntry crane of little lifting altitude, and lifting altitude is low, and the numerical value of therefore weighing receives the influence of steel rope weight change little.Also there is the gauntry crane of big elevating height to adopt the reel of rope-arranging mechanism to go out rope device; Its weighting apparatus is arranged in above row's rope leading sheave; But, leading sheave makes that actual component is too little because being changed by the steel rope angle; Follow the signal amplification of its sensor to make error bigger, be unfavorable for detecting exactly the variation of actual lift heavy amount equally.The merits and faults that combines above two kinds of weighing structure through improved design; And the fixed pulley group of designing one of them arrange weighting apparatus above the fixed pulley; The numerical value that the axial pin type sensor of its fixed pulley the inside is surveyed does not receive the influence of steel rope weight change, and its value is steady, accurate within whole lifting altitude stroke changes, and selected sensor specification type selecting is convenient; The stable output of the feedback signal in later stage guarantees safe in utilization, accurate.
The technical term definition that occurs in this patent:
P---sensor stress load;
The rated load of Q---hoisting crane;
M---crane hoisting mechanism duplex pulley block ratio.
Claims (2)
1. the novel weighting apparatus structure of ship-building gantry crane, it is characterized in that: have pulley yoke, on pulley yoke, be fixed with fixed pulley axis, the fixed pulley symmetry that is no less than two is set on the fixed pulley axis outward; On fixed pulley axis and be positioned at outside the fixed pulley middle and be arranged with the pulley yoke of weighing, the pulley yoke lower end of weighing is provided with the pulley of weighing; The pulley center of weighing is provided with the axial pin type sensor of while as sheave shaft, is arranged with axle sleeve II between sensor and the pulley, and sensors sides is provided with baffle plate, and baffle plate is fixed on the pulley yoke of weighing.
2. the novel weighting apparatus of the ship-building gantry crane described in claim 1 is characterized in that: outside sensor, be arranged with axle sleeve I, and the bearing in the pulley of weighing is positioned at axle sleeve I.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011100795679A CN102718143A (en) | 2011-03-31 | 2011-03-31 | Novel weighing device structure of shipbuilding gantry crane |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011100795679A CN102718143A (en) | 2011-03-31 | 2011-03-31 | Novel weighing device structure of shipbuilding gantry crane |
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| Publication Number | Publication Date |
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| CN102718143A true CN102718143A (en) | 2012-10-10 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2011100795679A Pending CN102718143A (en) | 2011-03-31 | 2011-03-31 | Novel weighing device structure of shipbuilding gantry crane |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104150359A (en) * | 2014-07-08 | 2014-11-19 | 湖南中联重科智能技术有限公司 | Hoisting-weight measuring method, equipment, system and engineering machine |
| CN111498689A (en) * | 2020-04-03 | 2020-08-07 | 江西昌河汽车有限责任公司 | Main hook pulley block of A-line traveling crane in stamping workshop and application of main hook pulley block |
| CN111847244A (en) * | 2020-06-11 | 2020-10-30 | 中联重科股份有限公司 | Method for measuring hanging load of crane |
Citations (9)
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|---|---|---|---|---|
| US3827514A (en) * | 1973-06-25 | 1974-08-06 | Weigh Tronix | Weight measuring hook block apparatus for cranes |
| JPS5218657A (en) * | 1975-08-01 | 1977-02-12 | Mitsubishi Electric Corp | Method of mounting weight measuring instrument on overhead crane |
| SU627064A1 (en) * | 1976-04-29 | 1978-10-05 | Тюменский индустриальный институт | Magnetoelastic force-measuring sensor for crane weighing apparatus |
| JPH05218657A (en) * | 1992-02-04 | 1993-08-27 | Hitachi Ltd | Multilayer printed wiring board |
| CN1613744A (en) * | 2004-12-08 | 2005-05-11 | 梅特勒-托利多(常州)称重设备系统有限公司 | Metering crab bucket |
| CN2786077Y (en) * | 2004-12-13 | 2006-06-07 | 贵阳铝镁设计研究院 | Discharged aluminium weighting mechanism of operation machine for electrolyte tank |
| CN201068367Y (en) * | 2007-06-29 | 2008-06-04 | 余姚太平洋称重工程有限公司 | Mounting device for bridge type crane electronic scale |
| CN201343355Y (en) * | 2008-12-23 | 2009-11-11 | 上海宝钢工程技术有限公司 | Steel ladle weighing device for shaft pin type sensors on hoisting and lifting equipment |
| CN201961979U (en) * | 2011-03-31 | 2011-09-07 | 江苏象王起重机有限公司 | Novel weighting device structure of shipbuilding gantry crane |
-
2011
- 2011-03-31 CN CN2011100795679A patent/CN102718143A/en active Pending
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3827514A (en) * | 1973-06-25 | 1974-08-06 | Weigh Tronix | Weight measuring hook block apparatus for cranes |
| JPS5218657A (en) * | 1975-08-01 | 1977-02-12 | Mitsubishi Electric Corp | Method of mounting weight measuring instrument on overhead crane |
| SU627064A1 (en) * | 1976-04-29 | 1978-10-05 | Тюменский индустриальный институт | Magnetoelastic force-measuring sensor for crane weighing apparatus |
| JPH05218657A (en) * | 1992-02-04 | 1993-08-27 | Hitachi Ltd | Multilayer printed wiring board |
| CN1613744A (en) * | 2004-12-08 | 2005-05-11 | 梅特勒-托利多(常州)称重设备系统有限公司 | Metering crab bucket |
| CN2786077Y (en) * | 2004-12-13 | 2006-06-07 | 贵阳铝镁设计研究院 | Discharged aluminium weighting mechanism of operation machine for electrolyte tank |
| CN201068367Y (en) * | 2007-06-29 | 2008-06-04 | 余姚太平洋称重工程有限公司 | Mounting device for bridge type crane electronic scale |
| CN201343355Y (en) * | 2008-12-23 | 2009-11-11 | 上海宝钢工程技术有限公司 | Steel ladle weighing device for shaft pin type sensors on hoisting and lifting equipment |
| CN201961979U (en) * | 2011-03-31 | 2011-09-07 | 江苏象王起重机有限公司 | Novel weighting device structure of shipbuilding gantry crane |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104150359A (en) * | 2014-07-08 | 2014-11-19 | 湖南中联重科智能技术有限公司 | Hoisting-weight measuring method, equipment, system and engineering machine |
| CN104150359B (en) * | 2014-07-08 | 2016-06-08 | 湖南中联重科智能技术有限公司 | Hoisting capacity measuring method, equipment, system and engineering machinery |
| CN111498689A (en) * | 2020-04-03 | 2020-08-07 | 江西昌河汽车有限责任公司 | Main hook pulley block of A-line traveling crane in stamping workshop and application of main hook pulley block |
| CN111498689B (en) * | 2020-04-03 | 2023-06-16 | 江西昌河汽车有限责任公司 | Main hook pulley block for line A traveling in stamping workshop and application thereof |
| CN111847244A (en) * | 2020-06-11 | 2020-10-30 | 中联重科股份有限公司 | Method for measuring hanging load of crane |
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Application publication date: 20121010 |