CN110389008A - The method of amount of deflection under level meter ground survey bridging crane main beam - Google Patents
The method of amount of deflection under level meter ground survey bridging crane main beam Download PDFInfo
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- CN110389008A CN110389008A CN201910666301.0A CN201910666301A CN110389008A CN 110389008 A CN110389008 A CN 110389008A CN 201910666301 A CN201910666301 A CN 201910666301A CN 110389008 A CN110389008 A CN 110389008A
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- Prior art keywords
- point
- ruler
- level meter
- girder
- hung
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B5/00—Measuring arrangements characterised by the use of mechanical techniques
- G01B5/30—Measuring arrangements characterised by the use of mechanical techniques for measuring the deformation in a solid, e.g. mechanical strain gauge
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M5/00—Investigating the elasticity of structures, e.g. deflection of bridges or air-craft wings
- G01M5/0041—Investigating the elasticity of structures, e.g. deflection of bridges or air-craft wings by determining deflection or stress
- G01M5/005—Investigating the elasticity of structures, e.g. deflection of bridges or air-craft wings by determining deflection or stress by means of external apparatus, e.g. test benches or portable test systems
- G01M5/0058—Investigating the elasticity of structures, e.g. deflection of bridges or air-craft wings by determining deflection or stress by means of external apparatus, e.g. test benches or portable test systems of elongated objects, e.g. pipes, masts, towers or railways
Abstract
The method of amount of deflection, belongs to crane deflection metrology technical field under a kind of level meter ground survey bridging crane main beam.The present invention, which solves traditional measurement method, has low efficiency, error big and the problems such as gauger is dangerous.Trolley is moved to one end of girder by the present invention, and since trolley stops end, does a mark point at interval of 0.5m to a beam in girder, and mark point is successively recorded as to, the 3rd point ..., N point at the 1st point at the 2nd point；Then ruler will be hung to be hung on the 1st point, it is read and is recorded using level meter and hang the reading that ruler is located at the 1st point, repeat the above steps the mobile reading hung ruler and use all mark points of level measurement, will using squared paper, according to the reading for the mark point that level meter 5 measures, the lower line of deflection an of beam is drawn.Measurement method of the invention is simple and easy, and is separately to measure two beams in girder, more accurate to the data that two beams measure together in girder compared in existing mensuration.
Description
Technical field
The present invention relates to a kind of methods of amount of deflection under level meter ground survey bridging crane main beam, belong to crane amount of deflection
Field of measuring technique.
Background technique
Bridge crane is crossbearer in the lifting equipment of workshop, warehouse and stock ground overhead progress material handling.Overhead traveling crane
The girder of machine along be laid on two sides it is overhead on track it is longitudinally running, trolley is laterally transported along the track being laid on girder
Row constitutes the working range of a rectangle, so that it may the space handling material below gantry is made full use of, not by the resistance of ground installation
Hinder.This crane is widely used in indoor and outdoor warehouse, workshop, harbour and outdoor yard etc..
The detection for degree of disturbing is the important performance indexes of crane safety evaluation under crane girder, it directly affects lifting
Bearing capacity, shock resistance of machine etc. use problem safely.
The measurement method of lower flexibility of main girder of crane is mainly suspension wire method, level meter aerological measurement method etc. at present.Suspension wire is surveyed
Amount method is that steel wire is drawn on girder, measures amount of deflection with Steel Ruler.Although suspension wire mensuration is simple, this method due to suspension wire from
The problems such as selection of the gravity sag of body and suspension wire diameter, can all cause biggish error, influence measurement result.Level meter is high
Empty mensuration sets seat ruler or straight steel ruler on level meter is erected on the race beam of workshop first or level meter is erected at walks on stage
At upper cover plate offset track pressing plate, with level measurement amount of deflection.Level meter aerological measurement method needs level meter being erected at factory
On the race beam in room, not about 0.5 meter of beam width is run, and run and be laid with cart rail among beam, gauger is dangerous, adds house
Top glazed thread is dim, and gauger does not see Chu, influences measurement result.Therefore it provides a kind of level meter ground survey overhead traveling crane
The method of amount of deflection is very necessary under main beam.
Summary of the invention
The present invention to solve the above-mentioned problems, provides amount of deflection under a kind of level meter ground survey bridging crane main beam
Method.
Technical solution of the present invention:
The method of amount of deflection under level meter ground survey bridging crane main beam, method includes the following steps:
Trolley is moved to one end of girder 3 by step 1, and since trolley stops end, to one in girder 3
Root beam does a mark point at interval of 0.5m, and mark point is successively recorded as to the 1st point, the 2nd point, the 3rd point ..., N point；And
Ruler 4 will be hung to be hung on the 1st point；
Step 2, by lower section ground of the level meter 5 by level meter bracket placement 3 other end of girder, alignment is hung ruler 4 and is adjusted
It is flat；
Step 3 is read and is recorded using level meter 5 and hangs the reading that ruler 4 is located at the 1st point；Mobile ruler 4 of hanging makes to second point
It is read and is recorded with level meter 5 and hung ruler 4 and be located at the 2nd point of reading, repeat above-mentioned measurement process, until obtaining hanging ruler 4 is located at the
N/2 point or (N+1)/2 points of reading；
Trolley is moved to the other end of girder 3 by step 4, repeats the measurement process in step 3, until being hung
Ruler 4 is located across the reading of remaining mark point after step 3 measurement；
Step 5, using squared paper will, according to level meter 5 measure in the 1st point, the 2nd point, the 3rd point ..., the reading of N point
Number, draws the lower line of deflection of the root beam；
Step 6, the step 5 always that repeats the above steps measure another beam, and draw the lower line of deflection of the root beam.
Preferred: the extension ruler 4 is that right angle hangs ruler, and the measuring surface and datum level of right angle extension ruler are orthogonal.
Preferred: when extension ruler is hung in mark point in the step one, the datum level for hanging ruler 4 hangs over a crane
On girder 3, and guarantee that the upper surface for hanging the datum level and crane girder 3 of ruler 4 is in the same plane.
Preferred: the level meter 5 is placed on bright and clear position.
Preferred: the girder 3 includes two beams
The invention has the following advantages: the present invention relates to a kind of level meter ground survey bridging crane main beam downwarps
The problem of method of degree, this method is simple and easy, avoids the inaccuracy and low efficiency of existing outstanding line measurement.It also avoids simultaneously
Level meter aerological measurement method runs the dangerous of beam measurement narrow, rather dark, situations such as not seeing Chu of measurement.And
Method of the invention is that two beams in girder separately measure, and is measured together compared in existing mensuration two beams in girder
Obtained data are more accurate.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of measurement lower flexibility of main girder of crane of the embodiment of the present invention；
Fig. 2 is the overlooking structure diagram of Fig. 1；
Fig. 3 is the structural schematic diagram of bridge crane；
1- runs beam, 2- rail, 3- girder, 4- extension ruler, 5- level meter in figure.
Specific embodiment
Specific embodiment 1:
Illustrate the specific embodiment of the invention in conjunction with attached drawing 1 to Fig. 3: a kind of level meter ground survey overhead traveling crane of the present invention
The method of amount of deflection under main beam, method includes the following steps:
Trolley is moved to one end of girder 3 by step 1, and since trolley stops end, to one in girder 3
Root beam does a mark point at interval of 0.5m, and mark point is successively recorded as to the 1st point, the 2nd point, the 3rd point ..., N point；And
Ruler 4 will be hung to be hung on the 1st point；
Step 2, by lower section ground of the level meter 5 by level meter bracket placement 3 other end of girder, alignment is hung ruler 4 and is adjusted
It is flat；
Step 3 is read and is recorded using level meter 5 and hangs the reading that ruler 4 is located at the 1st point；Mobile ruler 4 of hanging makes to second point
It is read and is recorded with level meter 5 and hung ruler 4 and be located at the 2nd point of reading, repeat above-mentioned measurement process, until obtaining hanging ruler 4 is located at the
N/2 point or (N+1)/2 points of reading；
Trolley is moved to the other end of girder 3 by step 4, repeats the measurement process in step 3, until being hung
Ruler 4 is located across the reading of remaining mark point after step 3 measurement；
Step 5, using squared paper will, according to level meter 5 measure in the 1st point, the 2nd point, the 3rd point ..., the reading of N point
Number, draws the lower line of deflection of the root beam；
Step 6, another beam of the girder 3 of step 5 measurement always that repeats the above steps, and draw the lower flexure of the root beam
Line.
Wherein, hanging ruler 4 is that right angle hangs ruler, and the measuring surface and datum level of right angle extension ruler are orthogonal, and in step 1
When middle extension ruler is hung in mark point, the datum level for hanging ruler 4 is hung on a crane girder 3, and guarantees to hang the datum level of ruler 4
It is in the same plane with the upper surface of crane girder 3.
As shown in Figure 1 to Figure 3, the concrete column being arranged on ground or metal branch are looked for by land in the both ends that workshop runs beam 1
On frame, workshop runs and is equipped with girder track 2 on beam 1, and two beams of girder 3 are arranged on girder track 2.Before measuring by lifting
Trolley moves to one end of girder 3, and since trolley stops end, does one at interval of 0.5m to a beam in girder 3
Mark point, and mark point is successively recorded as to the 1st point, the 2nd point, the 3rd point ..., N point；And it is hung on ruler 4 is hung on the 1st point；
Then by the lower section ground that level meter 5 is placed to 3 other end of girder by level meter bracket, alignment is hung ruler 4 and is leveled；Use water
Level 5, which reads and records, hangs the reading that ruler 4 is located at the 1st point；Mobile ruler 4 of hanging is read using level meter 5 to second point and records extension
Ruler 4 is located at the 2nd point of reading, repeats above-mentioned measurement process, until obtaining hanging the reading that ruler 4 is located at central marker point；By lifting
Trolley moves to the other end of girder 3, repeats the measurement process in step 3, until obtaining extension ruler 4 is located across step 3 measurement
The reading of remaining mark point afterwards；Using squared paper will, according to level meter 5 measure in the 1st point, the 2nd point, the 3rd point ..., N
The reading of point, draws the lower line of deflection of the root beam；Then using another beam of above method measurement girder 3, and the root is drawn
The lower line of deflection of beam.
This embodiment is just an exemplary description of this patent, does not limit its protection scope, those skilled in the art
Member can also be changed its part, as long as it does not exceed the essence of this patent, within the protection scope of the present patent.
Claims (5)
1. the method for amount of deflection under level meter ground survey bridging crane main beam, it is characterised in that method includes the following steps:
Trolley is moved to one end of girder (3) by step 1, and since trolley stops end, to one in girder (3)
Root beam does a mark point at interval of 0.5m, and mark point is successively recorded as to the 1st point, the 2nd point, the 3rd point ..., N point；And
Ruler (4) will be hung to be hung on the 1st point；
Step 2, by the lower section ground of level meter (5) by level meter bracket placement girder (3) other end, ruler (4) are hung in alignment
Leveling；
Step 3 is read and is recorded using level meter (5) and hangs the reading that ruler (4) are located at the 1st point；Mobile hang ruler (4) to second point,
It is read and is recorded using level meter (5) and hang the reading that ruler (4) are located at the 2nd point, repeat above-mentioned measurement process, until obtaining hanging ruler
(4) it is located at N/2 point or (N+1)/2 points of reading；
Trolley is moved to the other end of girder (3) by step 4, repeats the measurement process in step 3, until obtaining hanging ruler
(4) it is located across the reading of remaining mark point after step 3 measures；
Step 5, using squared paper will, according to level meter (5) measure in the 1st point, the 2nd point, the 3rd point ..., the reading of N point
Number, draws the lower line of deflection of the root beam；
Step 6, another beam of step 5 measurement girder (3) always that repeats the above steps, and draw the lower flexure of the root beam
Line.
2. the method for amount of deflection under level meter ground survey bridging crane main beam according to claim 1, it is characterised in that:
The extension ruler (4) is that right angle hangs ruler, and the measuring surface and datum level of right angle extension ruler are orthogonal.
3. the method for amount of deflection under level meter ground survey bridging crane main beam according to claim 2, it is characterised in that:
When extension ruler is hung in mark point in the step one, the datum level for hanging ruler (4) is hung on a crane girder (3), and
Guarantee that the upper surface for hanging the datum level and crane girder (3) of ruler (4) is in the same plane.
4. the method for amount of deflection under level meter ground survey bridging crane main beam according to claim 1, it is characterised in that:
The level meter (5) is placed on bright and clear position.
5. the method for amount of deflection under level meter ground survey bridging crane main beam according to claim 1, it is characterised in that:
The girder (3) includes two beams.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910666301.0A CN110389008B (en) | 2019-07-23 | 2019-07-23 | Method for measuring deflection under main beam of bridge crane by using level gauge on ground |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910666301.0A CN110389008B (en) | 2019-07-23 | 2019-07-23 | Method for measuring deflection under main beam of bridge crane by using level gauge on ground |
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| CN110389008A true CN110389008A (en) | 2019-10-29 |
| CN110389008B CN110389008B (en) | 2020-08-25 |
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201852565U (en) * | 2010-10-20 | 2011-06-01 | 北京起重运输机械设计研究院 | System for measuring downward deflection of crane girder |
| CN104567641A (en) * | 2015-01-06 | 2015-04-29 | 长安大学 | Middle and small span bridge deflection measuring device |
| CN105571504A (en) * | 2015-12-16 | 2016-05-11 | 天津市天门进保科技有限公司 | Bridge flexibility symmetrical photoelectric automatic measurement apparatus |
| CN108036707A (en) * | 2017-11-30 | 2018-05-15 | 浙江富春江水电设备有限公司 | Vertical hydropower generator Load brackets deflection metrology method |
| CN208419944U (en) * | 2018-07-02 | 2019-01-22 | 辽宁省交通高等专科学校 | Deflection measuring apparatus and deflection metrology system |
| CN109253716A (en) * | 2017-07-12 | 2019-01-22 | 上海宝钢工业技术服务有限公司 | The non-contact measurement apparatus and method of crossbeam amount of deflection |
-
2019
- 2019-07-23 CN CN201910666301.0A patent/CN110389008B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201852565U (en) * | 2010-10-20 | 2011-06-01 | 北京起重运输机械设计研究院 | System for measuring downward deflection of crane girder |
| CN104567641A (en) * | 2015-01-06 | 2015-04-29 | 长安大学 | Middle and small span bridge deflection measuring device |
| CN105571504A (en) * | 2015-12-16 | 2016-05-11 | 天津市天门进保科技有限公司 | Bridge flexibility symmetrical photoelectric automatic measurement apparatus |
| CN109253716A (en) * | 2017-07-12 | 2019-01-22 | 上海宝钢工业技术服务有限公司 | The non-contact measurement apparatus and method of crossbeam amount of deflection |
| CN108036707A (en) * | 2017-11-30 | 2018-05-15 | 浙江富春江水电设备有限公司 | Vertical hydropower generator Load brackets deflection metrology method |
| CN208419944U (en) * | 2018-07-02 | 2019-01-22 | 辽宁省交通高等专科学校 | Deflection measuring apparatus and deflection metrology system |
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| CN110389008B (en) | 2020-08-25 |
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