CN2366393Y - Device for real time measuring and monitoring strenth and rigidity of main beam of crane - Google Patents
Device for real time measuring and monitoring strenth and rigidity of main beam of crane Download PDFInfo
- Publication number
- CN2366393Y CN2366393Y CN99209179U CN99209179U CN2366393Y CN 2366393 Y CN2366393 Y CN 2366393Y CN 99209179 U CN99209179 U CN 99209179U CN 99209179 U CN99209179 U CN 99209179U CN 2366393 Y CN2366393 Y CN 2366393Y
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- girder
- rigidity
- crane
- real time
- intensity
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Abstract
The utility model provides a device for real time measuring and monitoring the strength and the rigidity of a main beam of a crane, which comprises a strain gauge, an amplifier and a data processor which are pasted at the maximum stress position of the dangerous cross-section of the main beam, a rigidity detector arranged at the maximum deflection position of the main beam, a computer, a display, an audible and visual alarm, a main circuit controller, etc. The utility model can be suitable for the real time detection, forecast, control, etc. of the strength and the rigidity of the main beams of various bridge cranes and gantry cranes. The utility model is especially suitable for the application of large bridge crane and the gantry crane, and can also be suitable for the load test of the long-span bridge.
Description
The utility model belongs to the test and the control technology of hoisting crane.
In the existing hoisting crane, a kind of load limiter is installed mostly, is adopted force gauge and secondary instrument to realize load limit and forecast.And just under static full load condition, utilize detections such as theodolite for the test of lower flexibility of main girder of crane, on January 25th, 99, the inventor applied for " a kind of lower flexibility of main girder of crane laser detecting method and device " (application number: 99101428.6) to China Intellectual Property Office, but the intensity to girder also only is to do the test of its stress, strain in static state or lifting process, can not satisfy operating crane girder intensity is detected in real time and prediction and alarm, not form comprehensive detection predictors such as the intensity of this main beam and rigidity.
The utility model provides a kind of device that in hoisting crane work the intensity and the rigidity of girder is detected in real time and monitors simultaneously.
The utility model provides a kind of crane girder intensity, rigidity to detect in real time and control monitor unit, it comprises electric bridge, amplifier, the lower flexibility of main girder rigidity detection device that resistance strain gauge is formed, it is characterized in that: it also comprises data handler, computing machine, telltale, combined aural and visual alarm and the major loop controller that strain signal is gathered, strain gage sticks on plane of weakness stress maximum and place, shearing maximum cross-section on the girder, and each link is by cable connection and transmit electric signal; The lower flexibility of main girder detecting device is loaded on lower flexibility of main girder maximum position place, and the electric signal of rigidity detection device is directly by cable input computing machine.
This installs described amplifier, data handler is integrated among the casing.
By the technical solution of the utility model, realized the intensity to crane girder, the real-time detection and the monitoring of rigidity, can onlinely detect; dynamically show that overload warning also can be used as the part of crane control system; it has improved the monitoring level of hoisting crane, plays the safety guard-safeguard effect.
Fig. 1 is the crane girder scheme drawing
Fig. 2 is that crane girder intensity, rigidity detect and control monitor unit formation scheme drawing
Fig. 3 is that crane girder inductance type, photoelectric position sensor rigidity detect scheme drawing
Describe the utility model embodiment in detail below in conjunction with accompanying drawing.
Fig. 1 is the crane girder scheme drawing.At the plane of weakness place of crane girder 10 flexure stress maximums (span centre of single supported beam), the plane of weakness place of shearing stress maximum (supporting position), adhering resistance strain gage 1,2 on its maximum stress point respectively, at the lower flexibility of main girder of crane maximum (span centre of single supported beam, the end of cantilever beam), a laser detector 4 is installed, the target of laser detector is installed on the supporting position.
Fig. 2 is that crane girder intensity, rigidity detect and control monitor unit formation scheme drawing.
Intensity (strain, stress) test section, it comprises resistance strain gauge 1 or 2, amplifier 3, data handler 5, computing machine 6, telltale 7, combined aural and visual alarm 8 and the major loop controller 9 that sticks on the crane girder, and they are got up by the transmission signals cable connection.And amplifier 3 and data handler 5 are integrated in the casing 11.When the crane loading weight, crane girder produces strain, stress, stick on the electric bridge that the resistance strain gauge on the girder is formed, convert the strain signal on the crane girder to electric signal, after preamplifier 12 in amplifier 3 and main amplifier 13 amplify signal, filter high order harmonic through filter 14 again, power amplifier 15 signals are input in the data handler after amplifying, data handing is to signal sampling, handle, and analog signal conversion become digital signal, digital signal is input to through connecting cable carries out processing such as data and image in the computing machine, control, forecast, and by the numeral of computing machine delivery port with signal, figures etc. are sent to telltale, on combined aural and visual alarm and the major loop controller.
Rigidity detects (lower flexibility of main girder of crane) part, among Fig. 1, rigidity detection device is a laser detector, and it is by laser detector 4, computing machine 6, telltale 7, combined aural and visual alarm 8 and major loop controller 9, and is made up of the cable connection of the transmission of electric signals institute of getting up.Laser detector comprises that the target two parts that are installed in the laser on the amount of deflection maximum position under the hoisting crane and are installed in girder supporting-point place form.
In the rigidity detection device of Fig. 3, its device is by inductive displacement transducer 20,21, the support 16, the slack-free steel cable 17 that are installed in girder supporting-point place are formed, one end of the armature 20 of inductive displacement transducer is fixedly mounted on the slack-free steel cable, and its shell filling is on the following amount of deflection maximum position of girder.It also comprises computing machine 6, telltale 7, combined aural and visual alarm 8 and major loop controller 9 etc. in addition, and is got up by the cable connection of transmission signals.
In addition, in Fig. 3, its rigidity detection device, it also can be by photoelectric psd 18,19, and the support 16, the slack-free steel cable 17 that are installed in girder supporting-point place form, and its grating 18 is fixed on the steel cable, and photoelectric transducer 19 is installed on the position of following amount of deflection maximum of girder.Equally, it also comprises computing machine 6, telltale 7, combined aural and visual alarm 8 and major loop controller 9 etc., and is got up by the cable connection of transmission signals.
When the crane loading weight, crane girder produces lower flexure strain, at this moment the rigidity detection device that is installed in girder span centre (following amount of deflection maximum position) converts the position signal of the lower flexibility of main girder measured to electric signal, and be input in the computing machine by the bonded assembly transmission cable, computing machine descends processing such as the data of amount of deflection and image, and numeral, figure and the control signal of signal is sent to respectively on telltale, combined aural and visual alarm and the major loop controller.
The utility model crane girder intensity, rigidity detect computing machine 6, telltale 7, combined aural and visual alarm 8 and the major loop controller 9 with control monitor unit in real time, can be used for equally in the control and other failure prediction of hoisting crane.
The utility model provides a kind of crane girder intensity, rigidity to detect in real time and control monitor unit, applicable various bridge-type, main beam of gantry crane intensity, real-time detection, forecast and the control etc. of rigidity, be specially adapted to the application of large-scale bridge type, transfer crane, also applicable to the Road test of large bridge.
Claims (4)
1, a kind of crane girder intensity, rigidity detect and control monitor unit in real time, it comprises electric bridge (1) that resistance strain gauge is formed or (2), amplifier (3), lower flexibility of main girder rigidity detection device (4), it is characterized in that: it also comprises data handler (5), computing machine (6), telltale (7), combined aural and visual alarm (8) and the major loop controller (9) that strain signal is gathered, strain gage sticks on girder (10) and goes up plane of weakness stress maximum and place, shearing maximum cross-section, and each link is by cable connection and transmit electric signal; The lower flexibility of main girder detecting device is loaded on lower flexibility of main girder maximum position place, and the electric signal of rigidity detection device is directly by cable input computing machine.
2, a kind of crane girder intensity according to claim 1, rigidity detect and control monitor unit in real time, it is characterized in that: described amplifier (3), data handler (5) are integrated among the casing (11).
3, detect in real time and control monitor unit according to claim 1,2 described a kind of crane girder intensity, rigidity, it is characterized in that: described lower flexibility of main girder detecting device, it is made up of the support that is installed in girder supporting-point place (16), slack-free steel cable (17), photoelectric psd (18,19), the grating of photoelectric psd (18) is fixed on the slack-free steel cable, and photoelectric transducer (19) is installed on the girder.
4, detect in real time and control monitor unit according to claim 1,2 described a kind of crane girder intensity, rigidity, it is characterized in that: described lower flexibility of main girder detecting device, it is made up of the support that is installed in girder supporting-point place (16), slack-free steel cable (17), inductive displacement transducer (20,21), one end of the armature of inductive displacement transducer (20) is fixedly mounted on the slack-free steel cable, and the shell filling of its sensor is on girder.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN99209179U CN2366393Y (en) | 1999-04-21 | 1999-04-21 | Device for real time measuring and monitoring strenth and rigidity of main beam of crane |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN99209179U CN2366393Y (en) | 1999-04-21 | 1999-04-21 | Device for real time measuring and monitoring strenth and rigidity of main beam of crane |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2366393Y true CN2366393Y (en) | 2000-03-01 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN99209179U Expired - Lifetime CN2366393Y (en) | 1999-04-21 | 1999-04-21 | Device for real time measuring and monitoring strenth and rigidity of main beam of crane |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2366393Y (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101830397A (en) * | 2010-04-02 | 2010-09-15 | 太原科技大学 | System and method for acquiring loading spectrum parameter data of bridge crane |
| CN101712438B (en) * | 2009-12-15 | 2012-04-18 | 太原科技大学 | Method for acquiring evaluation point stress time domain value by utilizing tower crane operating data |
| CN103213904A (en) * | 2012-01-20 | 2013-07-24 | 宝山钢铁股份有限公司 | Apparatus for detecting dangerous section of object taking part of hoisting machine |
| CN108128702A (en) * | 2017-12-22 | 2018-06-08 | 西京学院 | A kind of jib for tower crane side sway amount real-time monitoring system |
| CN108584703A (en) * | 2018-07-18 | 2018-09-28 | 安徽工业大学 | Double girder overhead crane lift heavy and Main Girder Deflection on-line measurement system and its measurement method |
-
1999
- 1999-04-21 CN CN99209179U patent/CN2366393Y/en not_active Expired - Lifetime
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101712438B (en) * | 2009-12-15 | 2012-04-18 | 太原科技大学 | Method for acquiring evaluation point stress time domain value by utilizing tower crane operating data |
| CN101830397A (en) * | 2010-04-02 | 2010-09-15 | 太原科技大学 | System and method for acquiring loading spectrum parameter data of bridge crane |
| CN103213904A (en) * | 2012-01-20 | 2013-07-24 | 宝山钢铁股份有限公司 | Apparatus for detecting dangerous section of object taking part of hoisting machine |
| CN103213904B (en) * | 2012-01-20 | 2015-04-01 | 宝山钢铁股份有限公司 | Apparatus for detecting dangerous section of object taking part of hoisting machine |
| CN108128702A (en) * | 2017-12-22 | 2018-06-08 | 西京学院 | A kind of jib for tower crane side sway amount real-time monitoring system |
| CN108128702B (en) * | 2017-12-22 | 2019-05-10 | 西京学院 | A kind of jib for tower crane side sway amount real-time monitoring system |
| CN108584703A (en) * | 2018-07-18 | 2018-09-28 | 安徽工业大学 | Double girder overhead crane lift heavy and Main Girder Deflection on-line measurement system and its measurement method |
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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: TAIYUAN HEAVY INDUSTRY CO. Free format text: FORMER OWNER: TAIYUAN HEAVY MACHINERY(GROUP )CO.LTD. Effective date: 20080815 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20080815 Address after: 53, Jade River Street, Hexi District, Shanxi, Taiyuan: 030024 Patentee after: Taiyuan Heavy Industry Co., Ltd. Address before: 53, Jade River Street, Wan Berlin District, Shanxi, Taiyuan Province, 030024 Patentee before: Taiyuan Heavy-Duty Machinery (Group) Co., Ltd. |
|
| C17 | Cessation of patent right | ||
| CX01 | Expiry of patent term |