CN201852565U - System for measuring downward deflection of crane girder - Google Patents
System for measuring downward deflection of crane girder Download PDFInfo
- Publication number
- CN201852565U CN201852565U CN2010205698943U CN201020569894U CN201852565U CN 201852565 U CN201852565 U CN 201852565U CN 2010205698943 U CN2010205698943 U CN 2010205698943U CN 201020569894 U CN201020569894 U CN 201020569894U CN 201852565 U CN201852565 U CN 201852565U
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- crane
- girder
- range finder
- laser range
- support
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Abstract
The utility model discloses a system for measuring downward deflection of a crane girder, which belongs to the technical field of deflection measurement of a crane. The system comprises a laser ranging device (1), a stand (2) and a crane girder (3), wherein the laser ranging device (1) is arranged on the stand (2), and the stand (2) is placed under the crane girder (3). In the utility model, through measuring downward deflection of the crane girder by the laser ranging device, the laser ranging device is convenient to carry, the measuring process is simple and easy to operate, the adjustment is convenient and the cost is low; and in addition, the laser ranging device also can compute the vertical distance of the measured girder through a self function under the non-vertical and non-horizontal condition, so that different use occasions can be met, and high efficiency of the device to be measured is ensured.
Description
Technical field
The utility model relates to crane deflection metrology technical field, particularly a kind of system of measuring lower flexibility of main girder of crane.
Background technology
The detection of lower flexibility of main girder of crane is the important performance indexes that crane safety is estimated, and it directly affects the safe handling problems such as load-bearing capacity, shock resistance of crane.Therefore, the measurement of lower flexibility of main girder of crane has great significance to production, the applying unit of crane.
The measuring method of lower flexibility of main girder of crane mainly contains suspension wire method, the spirit-leveling instrument direct method of measurement etc. at present.The suspension wire mensuration is by selecting the reference point of two fixed statics, on each reference point, fix a fixed pulley respectively, the suspension wire that two ends is connected weight is walked around fixed pulley then, under the gravity of weight, suspension wire tightened even up, obtain its time amount of deflection by the distance of measuring girder point and suspension wire at last.Though the suspension wire mensuration is simple, this method requires on-the-spot have static reference point, the field of employment that will limit this kind method like this; In addition, because problem such as the choosing and all can the cause error bigger than normal of gravity sag of suspension wire self and suspension wire diameter.The spirit-leveling instrument direct method of measurement is to adopt spirit-leveling instrument and scale, and the rod reading difference obtains the natural bow of girder span centre before and after loading according to the girder span centre.But setting is walked on stage, railing because many cranes do not have, and inconvenient personnel directly are provided with scale to crane; In addition, this method causes error bigger than normal in the outdoor influence that is subject to strong wind atmosphere.
The utility model content
For solve existing lower flexibility of main girder of crane measure inconvenient, problem such as measuring error is big, the utility model provides a kind of system of measuring lower flexibility of main girder of crane, comprises laser range finder (1), support (2) and crane girder (3); Described laser range finder (1) is installed on the support (2), and described support (2) is placed on crane girder (3) below.
Described support comprises a carriage on (2), and described carriage is installed in the top of described support (2), and described laser range finder (1) is installed on the described carriage.
Described support (2) also comprises a level meter, is used to check whether level of described carriage.
Described support (2) comprises a vertical collimator, is used to check whether described laser range finder is vertical with described crane girder.
The utility model is measured lower flexibility of main girder of crane by laser range finder, and laser range finder is easy to carry, and measuring process is simple, easy to adjust, cost is low; In addition, laser range finder can also calculate the vertical range of the girder of surveying in out of plumb by the incidental function of instrument self under the out-of-level condition, can satisfy different use occasions like this, has guaranteed the high efficiency of equipment to be checked.
Description of drawings
Fig. 1 is the system architecture synoptic diagram of the utility model examples measure lower flexibility of main girder of crane.
Embodiment
Below in conjunction with drawings and Examples, technical solutions of the utility model are further described.
Referring to Fig. 1, the utility model embodiment provides a kind of simple, fast employing laser range finder to measure the system of lower flexibility of main girder of crane, and this system comprises laser range finder (1), support (2) and crane girder (3); Laser range finder (1) is installed on the support (2), and support (2) is placed on crane girder (3) below.
Alternatively, support can comprise a carriage on (2), and carriage is installed in the top of support (2), and laser range finder (1) is installed on the carriage.
Alternatively, support (2) can also comprise a level meter, is used to check whether level of carriage.
Alternatively, support (2) comprises a vertical collimator, is used to check whether laser range finder is vertical with crane girder.
In order to measure lower flexibility of main girder of crane exactly, present embodiment adopts following method to measure:
Step 1, support (2) is placed on the ground under tested crane girder (3) span centre,, vertical with the lower surface of tested crane girder (3) by the level meter on the observation support (2) by the vertical collimator adjustment laser range finder of observing on the support (2) (1) with the carriage level-off on the support (2);
Step 2, open laser range finder (1), make the measuring point of laser range finder (1) aim at the lower surface of tested crane girder (3), at this moment the shown numerical value of laser range finder (1) is the height value of girder span centre before loading;
Step 3, crane is increased corresponding load, treat the shown numerical value of load stable back laser range finder (1) for loading the height value of back girder span centre, the shown difference of reading of laser range finder (1) obtains the natural bow of girder before and after loading according to crane like this.
Above-mentioned measurement is carried out under a kind of ecotopia, consider the performance characteristics of laser range finder itself, laser range finder can also be in out of plumb, calculate the vertical range of the girder of surveying under the out-of-level condition by the incidental function of instrument self, thereby further determine the natural bow of girder.
The utility model is measured lower flexibility of main girder of crane by laser range finder, and laser range finder is easy to carry, and measuring process is simple, easy to adjust, cost is low; In addition, laser range finder can also calculate the vertical range of the girder of surveying in out of plumb by the incidental function of instrument self under the out-of-level condition, can satisfy different use occasions like this, has guaranteed the high efficiency of equipment to be checked.
Above-described specific embodiment; the purpose of this utility model, technical scheme and beneficial effect are further described; institute is understood that; the above only is a specific embodiment of the utility model; be not limited to the utility model; all within spirit of the present utility model and principle, any modification of being made, be equal to replacement, improvement etc., all should be included within the protection domain of the present utility model.
Claims (4)
1. a system of measuring lower flexibility of main girder of crane is characterized in that, comprises laser range finder (1), support (2) and crane girder (3); Described laser range finder (1) is installed on the support (2), and described support (2) is placed on crane girder (3) below.
2. the system of measurement lower flexibility of main girder of crane as claimed in claim 1 is characterized in that, described support comprises a carriage on (2), and described carriage is installed in the top of described support (2), and described laser range finder (1) is installed on the described carriage.
3. the system of measurement lower flexibility of main girder of crane as claimed in claim 2 is characterized in that, described support (2) also comprises a level meter.
4. as the system of arbitrary described measurement lower flexibility of main girder of crane among the claim 1-3, it is characterized in that described support (2) comprises a vertical collimator.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010205698943U CN201852565U (en) | 2010-10-20 | 2010-10-20 | System for measuring downward deflection of crane girder |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010205698943U CN201852565U (en) | 2010-10-20 | 2010-10-20 | System for measuring downward deflection of crane girder |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201852565U true CN201852565U (en) | 2011-06-01 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010205698943U Expired - Lifetime CN201852565U (en) | 2010-10-20 | 2010-10-20 | System for measuring downward deflection of crane girder |
Country Status (1)
| Country | Link |
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| CN (1) | CN201852565U (en) |
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103063383A (en) * | 2013-01-10 | 2013-04-24 | 芜湖东旭光电科技有限公司 | Deflection measuring device of flat-panel display substrate glass |
| CN103090809A (en) * | 2011-10-28 | 2013-05-08 | 康力电梯股份有限公司 | Measuring method for elevator truss deflection |
| CN103278300A (en) * | 2013-05-23 | 2013-09-04 | 长安大学 | Non-contact bridge deflection sensor |
| CN104215192A (en) * | 2013-06-05 | 2014-12-17 | 中国铁建港航局集团有限公司 | Method for measuring inverted camber of prefabricated beam/slab |
| CN105758325A (en) * | 2016-04-28 | 2016-07-13 | 杭州凯达电力建设有限公司 | Holding pole deformation measuring instrument |
| CN106908006A (en) * | 2017-02-21 | 2017-06-30 | 安徽工业大学 | Member bends measurement apparatus and application method based on laser and bracing wire displacement |
| 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 |
| CN110360927A (en) * | 2019-07-24 | 2019-10-22 | 西南交通大学 | One kind is grown up component amount of deflection rapid measurement device and measurement method |
| CN110389008A (en) * | 2019-07-23 | 2019-10-29 | 常州机电职业技术学院 | Method for measuring deflection under main beam of bridge crane by using level gauge on ground |
| CN111693233A (en) * | 2020-05-12 | 2020-09-22 | 广东省特种设备检测研究院珠海检测院 | Crane main beam lower deflection measuring device based on image processing |
| CN112507472A (en) * | 2020-10-29 | 2021-03-16 | 南京航空航天大学 | Crane static deflection assessment method based on modal deflection method |
-
2010
- 2010-10-20 CN CN2010205698943U patent/CN201852565U/en not_active Expired - Lifetime
Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103090809A (en) * | 2011-10-28 | 2013-05-08 | 康力电梯股份有限公司 | Measuring method for elevator truss deflection |
| CN103063383A (en) * | 2013-01-10 | 2013-04-24 | 芜湖东旭光电科技有限公司 | Deflection measuring device of flat-panel display substrate glass |
| CN103278300A (en) * | 2013-05-23 | 2013-09-04 | 长安大学 | Non-contact bridge deflection sensor |
| CN104215192A (en) * | 2013-06-05 | 2014-12-17 | 中国铁建港航局集团有限公司 | Method for measuring inverted camber of prefabricated beam/slab |
| CN105758325A (en) * | 2016-04-28 | 2016-07-13 | 杭州凯达电力建设有限公司 | Holding pole deformation measuring instrument |
| CN105758325B (en) * | 2016-04-28 | 2018-01-26 | 杭州凯达电力建设有限公司 | A kind of pole distortion measurement instrument |
| CN106908006A (en) * | 2017-02-21 | 2017-06-30 | 安徽工业大学 | Member bends measurement apparatus and application method based on laser and bracing wire displacement |
| 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 |
| CN110389008A (en) * | 2019-07-23 | 2019-10-29 | 常州机电职业技术学院 | Method for measuring deflection under main beam of bridge crane by using level gauge on ground |
| CN110360927A (en) * | 2019-07-24 | 2019-10-22 | 西南交通大学 | One kind is grown up component amount of deflection rapid measurement device and measurement method |
| CN111693233A (en) * | 2020-05-12 | 2020-09-22 | 广东省特种设备检测研究院珠海检测院 | Crane main beam lower deflection measuring device based on image processing |
| CN112507472A (en) * | 2020-10-29 | 2021-03-16 | 南京航空航天大学 | Crane static deflection assessment method based on modal deflection method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CP01 | Change in the name or title of a patent holder | ||
| CP01 | Change in the name or title of a patent holder |
Address after: 100007 Lama Temple street, Dongcheng District, Dongcheng District, Beijing Patentee after: Beijing lifting and conveying machinery design and Research Institute Co., Ltd. Address before: 100007 Lama Temple street, Dongcheng District, Dongcheng District, Beijing Patentee before: Beijing Materials Handling Research Institute |
|
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20110601 |