CN108019035A - The jacket-type scaffold base of steel pipe stress can be monitored - Google Patents
The jacket-type scaffold base of steel pipe stress can be monitored Download PDFInfo
- Publication number
- CN108019035A CN108019035A CN201711455000.0A CN201711455000A CN108019035A CN 108019035 A CN108019035 A CN 108019035A CN 201711455000 A CN201711455000 A CN 201711455000A CN 108019035 A CN108019035 A CN 108019035A
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- China
- Prior art keywords
- steel pipe
- jacket
- monitoring
- type scaffold
- bridge
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Classifications
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04G—SCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
- E04G5/00—Component parts or accessories for scaffolds
- E04G5/02—Scaffold feet, e.g. with arrangements for adjustment
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
- G01L1/00—Measuring force or stress, in general
- G01L1/20—Measuring force or stress, in general by measuring variations in ohmic resistance of solid materials or of electrically-conductive fluids; by making use of electrokinetic cells, i.e. liquid-containing cells wherein an electrical potential is produced or varied upon the application of stress
- G01L1/22—Measuring force or stress, in general by measuring variations in ohmic resistance of solid materials or of electrically-conductive fluids; by making use of electrokinetic cells, i.e. liquid-containing cells wherein an electrical potential is produced or varied upon the application of stress using resistance strain gauges
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- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Mechanical Engineering (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Testing Of Devices, Machine Parts, Or Other Structures Thereof (AREA)
- Investigating Strength Of Materials By Application Of Mechanical Stress (AREA)
Abstract
The present invention relates to scaffold chassis technology field, particular for jacket-type scaffold base, it is related to a kind of jacket-type scaffold base for monitoring steel pipe stress, including steel plate chassis, outer steel pipe, the strain transducer for being integrated in outer steel pipe root and exterior intelligent wireless strain monitoring device are further included.The strain transducer is resistance strain sensor, uses bridge circuit as measuring circuit, its operating mode can be one kind in a quarter bridge, half-bridge or full-bridge.The information of strain transducer collection inputs intelligent wireless strain monitoring device by signal input interface, after signal condition, A/D conversions, analyzed and processed by microcontroller, and real time data and warning message are sent to PC control terminals by radio transmitting device, so as to fulfill the real-time monitoring changed to scaffold base steel penstock stress.The present invention can have found security risk of the scaffold during installation and construction usage in time, greatly facilitate the security monitoring to scaffold.
Description
Technical field
The present invention relates to scaffold chassis technology field, and particular for jacket-type scaffold base, being related to one kind can monitor
The jacket-type scaffold base of steel pipe stress.
Background technology
Scaffold is indispensable temporary facility in construction, be for ensure high-rise working safely, be smoothed out applying
Work and the workbench or operation path set up, have wide in the installation of structure construction, decoration construction and equipment pipe
General application.
The scaffold security incident of China's construction in recent years takes place frequently, whether caused by scaffold entirety or local buckling
Topple, cave in, or scaffold take tear open and frame on operating personnel high falling, cause serious casualty accident.
Steel pipe scaffold upright bar sets base, can anti-sliding stop and uneven subsidence.To the stress variation of scaffold base
Monitored in real time, early warning can be made when big change occurs for base stress, so it is timely to the corresponding site of scaffold
Checked, adjusted, prevented overall collapse or the partial collapse of scaffold, so as to reduce security incident, avoid casualties.
Therefore, in addition to being set up in strict accordance with regulation and using scaffold, during scaffold building and use, to its bottom
It is also the important measures for preventing and reducing security incident that seat, which monitor in real time,.
The content of the invention
In order to prevent collapsing for scaffold, the present invention provides a kind of jacket-type scaffold bottom for monitoring steel pipe stress
Seat, is monitored in real time for the stress variation of outer steel pipe, and early warning is made when big change occurs for its stress.
In order to solve the above technical problems, the present invention takes following technical scheme：It is a kind of to monitor the outer of steel pipe stress
Shell type scaffold base, including steel plate chassis, outer steel pipe, the strain transducer for being integrated in outer steel pipe root and exterior nothing
Line intelligence strain monitoring device.
Specifically, the jacket-type scaffold base, its outer steel pipe internal diameter is bigger 2mm than upright bar outside diameter, will be vertical during use
In bar insertion outer steel pipe.
Further, the intelligent wireless strain monitoring device includes signal input interface, signal conditioner, A/D conversions
Device, microcontroller and radio transmitting device.The output of the strain transducer is connected to signal input interface, signal conditioner
Output be connected to the input of A/D converter, the output of A/D converter is connected to the input of microcontroller, microcontroller it is defeated
Go out to be connected to the input of radio transmitting device.
Preferably, the strain transducer that the jacket-type scaffold base integrates is resistance strain sensor.
Further, the resistance strain sensor uses the change of strain gage testing scaffold base steel penstock stress
Change.
Preferably, the resistance strain sensor uses bridge circuit as measuring circuit.
Further, the bridge circuit is using a kind of working method in a quarter bridge, half-bridge, full-bridge.
Further, the half-bridge working method includes two identical half-bridge circuits, and each half-bridge circuit includes
Two identical resistance strain gages, the resistance strain gage symmetrically integrate the root for covering steel pipe outside, access adjacent the two of electric bridge
Arm.
Further, a quarter bridge working method includes four identical a quarter bridge circuits, each four points
One of bridge circuit include a resistance strain gage, four resistance strain gages are uniformly distributed, and are integrated in the root of outer steel pipe.
Further, the full-bridge working method includes a full-bridge circuit, and the full-bridge circuit includes four resistance should
Become piece, be uniformly distributed, be integrated in the root of outer steel pipe, opposite foil gauge accesses the adjacent two-arm of electric bridge.
Further, the quantity of the resistance strain gage is extended to six, eight.
Preferably, the signal conditioner can the signal of pair of strain sensors collection carry out error compensation and necessary put
Big processing.
Preferably, the A/D converter converts analog signals into digital signal, easy to signal processing and transmission.
Preferably, the digital signal that the microcontroller exports A/D converter carries out digital filtering, analyzing and processing, and
Sent by radio transmitting device.
The beneficial effects of the invention are as follows：Strained by integrating strain transducer on scaffold base and connecting intelligent wireless
Monitoring device, monitors the stress variation of scaffold base steel pipe in real time, and by wireless transmitting system by real time data
And warning message is sent to PC control terminals, so that security risk of the scaffold during installation and construction usage is found in time,
Greatly facilitate the security monitoring to scaffold.
Brief description of the drawings
Fig. 1 is the structure diagram for the jacket-type scaffold base that the present invention can monitor steel pipe stress.
Fig. 2 is the profile of Fig. 1.
Fig. 3 is the top view of Fig. 1.
Fig. 4 is the principle of the present invention structure diagram.
Fig. 5 is the jacket-type scaffold understructure top view that six resistance strain gages are integrated in embodiment 4.
Fig. 6 is the jacket-type scaffold understructure top view that eight resistance strain gages are integrated in embodiment 5.
Embodiment
Below in conjunction with attached drawing, the present invention will be described in detail.
Embodiment 1
Jacket-type scaffold understructure such as Fig. 1-3 of steel pipe stress, implementation principle of the invention can be monitored in the present invention
Structure such as Fig. 4.
As shown in Figs. 1-3, the jacket-type scaffold base for monitoring steel pipe stress includes outer steel pipe 1, steel
Plate chassis 2, the resistance strain gage 3-6 of strain transducer and the intelligent wireless strain prison of outside for being integrated in 1 root of outer steel pipe
Measurement equipment.
As shown in figure 4, the intelligent wireless strain monitoring device includes signal input interface, signal conditioner, A/D conversions
Device, microcontroller and radio transmitting device.The output of the strain transducer is connected to signal input interface, signal conditioner
Output be connected to the input of A/D converter, the output of A/D converter is connected to the input of microcontroller, microcontroller it is defeated
Go out to be connected to the input of radio transmitting device.
When it is implemented, the initial stress values of scaffold base are measured first, and according to the Structure Calculation of scaffold just
Under normal service condition, different operating can caused by stress variation value, set up stress variation early warning value accordingly, can set different pre-
Alert rank.During the work time, when stress variation exceedes early warning value, alarm signal is sent to PC control terminals by system, this report
Alert signal includes alert levels, alert locations and stress variation information.Do not alarm generation when, PC control terminals can also ask to look into
See the real-time strain data and history warning message being stored in the intelligent wireless strain monitoring device.
Preferably, the strain transducer is resistance strain sensor.The resistance strain sensor uses resistance-strain
Piece 3-6 measures the change of scaffold base stress, and uses bridge circuit as measuring circuit.The bridge circuit is using half-bridge
Working method, including two identical half-bridge circuits, each half-bridge circuit include two identical resistance strain gages.Four
Resistance strain gage 3-6 is uniformly distributed, and is integrated in the root of outer steel pipe 1, wherein resistance strain gage3 Hes4 on overcoat steel
1 axisymmetrical of pipe, resistance strain gage5 Hes6 on 1 axisymmetrical of outer steel pipe.By resistance strain gage during work3 HesThe adjacent two-arm of 4 one electric bridge of access, resistance strain gage5 Hes6 access the adjacent two-arm of another electric bridge.Due to connecing
Enter the positional symmetry that two resistance strain gages of electric bridge integrate, on the contrary, when foil gauge produces deformation because of stress, electric bridge loses stress
Go to balance, so as to produce differential signal.This differential signal reflects the change of scaffold base steel penstock stress, accesses intelligent wireless
Strain monitoring device.
The signal of the signal conditioner pair of strain sensors collection carries out error compensation and necessary enhanced processing, place
Signal access A/D converter after reason.
The A/D converter converts analog signals into digital signal, preferably high-precision easy to signal processing and transmission
Degree, the A/D converter of multichannel.The input terminal of the output signal access microcontroller of A/D converter.
The microcontroller has the function of data acquisition control, can control the sample frequency of A/D converter, and to A/D
The digital signal of converter output carries out digital filtering, removes noise.And then the microcontroller counts signal accordingly
According to processing, analysis judges whether stress variation exceedes corresponding early warning value, and result is passed through nothing in the case where early warning occurs
Line Transmission system is reported to PC ends.Preferably, the microcontroller have storage control function, can store real-time strain data and
History warning message.
Embodiment 2
As shown in Figs 1-4, a kind of jacket-type scaffold understructure for monitoring steel pipe stress of the invention sets and should
With principle with embodiment 1, the strain transducer is resistance strain sensor, and uses bridge circuit as measuring circuit.It is described
Bridge circuit uses the working method of a quarter bridge, includes four identical a quarter bridge circuits, each a quarter bridge
Circuit includes a resistance strain gage, and four resistance strain gage 3-6 are uniformly distributed, and are integrated in the root of outer steel pipe 1.Work
When, each resistance strain gage accesses an a quarter bridge circuit, so as to measure the stress change of 1 different azimuth of outer steel pipe.
Embodiment 3
As shown in Figs 1-4, a kind of jacket-type scaffold understructure for monitoring steel pipe stress of the invention sets and should
With principle with embodiment 1, the strain transducer is resistance strain sensor, and uses bridge circuit as measuring circuit.It is described
Bridge circuit uses the working method of full-bridge, includes a full-bridge circuit.The full-bridge circuit includes four identical resistance should
Become piece 3-6, be uniformly distributed, be integrated in the root of outer steel pipe 1.During work, by adjacent the two of opposite foil gauge access electric bridge
Arm, makes four measured signals be connected into two differential symmetrical full-bridge working forms.Answered due to opposite foil gauge stress on the contrary, working as
When becoming piece because of stress generation deformation, electric bridge disequilibrium, so as to produce differential signal, accesses intelligent wireless strain monitoring device.
Embodiment 4
As shown in Figs 1-4, a kind of jacket-type scaffold understructure for monitoring steel pipe stress of the invention sets and should
With principle with embodiment 1, the strain transducer is resistance strain sensor.As shown in figure 5, the resistance strain sensor makes
The root of outer steel pipe 1 is integrated in six resistance strain gage 3-8, and is uniformly distributed.The resistance strain sensor uses six
A a quarter bridge, three half-bridges or a full-bridge add a kind of working method in a half-bridge.Using six resistance strain gages
Coverings of the 3-8 to outer steel pipe 1 is wider, thus can improve the sensitivity to the monitoring of its stress variation.
Embodiment 5
As shown in Figs 1-4, a kind of jacket-type scaffold understructure for monitoring steel pipe stress of the invention sets and should
With principle with embodiment 1, the strain transducer is resistance strain sensor.As shown in fig. 6, the resistance strain sensor makes
The root of outer steel pipe 1 is integrated in eight resistance strain gage 3-10, and is uniformly distributed.The resistance strain sensor uses eight
A kind of working method in a a quarter bridge, four half-bridges or two full-bridges.Using eight resistance strain gage 3-10 to overcoat
The covering of steel pipe 1 more comprehensively, thus can be further improved to its stress variation the stress comprehensive monitoring of its all angles
The sensitivity of monitoring.
The invention is not restricted to the above embodiment, made any to the above embodiment aobvious of those skilled in the art and
The improvement or change being clear to, all without the design beyond the present invention and the protection domain of appended claims.
Claims (11)
1. a kind of jacket-type scaffold base for monitoring steel pipe stress, including steel plate chassis, outer steel pipe, its feature exist
In further including the intelligent wireless strain monitoring device of the strain transducer that is integrated in outer steel pipe root and outside.
2. the jacket-type scaffold base according to claim 1 for monitoring steel pipe stress, it is characterised in that described
Scaffold understructure form is jacket-type, and the outer steel pipe internal diameter is bigger 2mm than upright bar outside diameter, is inserted into upright bar during use outer
Cover in steel pipe.
3. the jacket-type scaffold base according to claim 1 for monitoring steel pipe stress, it is characterised in that described
Intelligent wireless strain monitoring device includes signal input interface, signal conditioner, A/D converter, microcontroller and wireless biography
Defeated device, the output of the strain transducer are connected to signal input interface, and the output of the signal conditioner is connected to A/D and turns
The input of parallel operation, the output of the A/D converter are connected to the input of microcontroller, and the output of the microcontroller is connected to nothing
The input of line transmitting device.
4. the jacket-type scaffold base according to claim 1 for monitoring steel pipe stress, it is characterised in that described
The strain transducer that jacket-type scaffold base integrates is resistance strain sensor.
5. the jacket-type scaffold base according to claim 4 for monitoring steel pipe stress, it is characterised in that described
Resistance strain sensor uses the change of strain gage testing outer steel pipe Root Stress.
6. the jacket-type scaffold base according to claim 4 for monitoring steel pipe stress, it is characterised in that described
Resistance strain sensor uses bridge circuit as measuring circuit.
7. the jacket-type scaffold base according to claim 6 for monitoring steel pipe stress, it is characterised in that described
Bridge circuit is using a kind of working method in a quarter bridge, half-bridge, full-bridge.
8. the jacket-type scaffold base according to claim 5 for monitoring steel pipe stress, it is characterised in that described
Resistance strain gage is uniformly integrated in the root of outer steel pipe.
9. the jacket-type scaffold base for monitoring steel pipe stress according to claim 7,8, it is characterised in that institute
The resistance strain gage included in half-bridge circuit is stated, opposite foil gauge accesses the adjacent two-arm of electric bridge.
10. the jacket-type scaffold base for monitoring steel pipe stress according to claim 7,8, it is characterised in that
The resistance strain gage included in the full-bridge circuit, opposite foil gauge access the adjacent two-arm of electric bridge.
11. the jacket-type scaffold base for monitoring steel pipe stress according to claim 5,8-10, its feature exist
In the quantity of the resistance strain gage can expand to six, eight by four.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711455000.0A CN108019035A (en) | 2017-12-28 | 2017-12-28 | The jacket-type scaffold base of steel pipe stress can be monitored |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711455000.0A CN108019035A (en) | 2017-12-28 | 2017-12-28 | The jacket-type scaffold base of steel pipe stress can be monitored |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108019035A true CN108019035A (en) | 2018-05-11 |
Family
ID=62072071
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711455000.0A Pending CN108019035A (en) | 2017-12-28 | 2017-12-28 | The jacket-type scaffold base of steel pipe stress can be monitored |
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| Country | Link |
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| CN (1) | CN108019035A (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE20219209U1 (en) * | 2002-12-11 | 2004-04-15 | Dipl.-Ing. Herbert Schulz Gerüstbau GmbH & Co. KG | Marker indicating a critical loading of scaffolding platforms with bulk materials comprises outer and inner hollow cylindrical components which are slidable relative to one another |
| CN102087151A (en) * | 2010-11-17 | 2011-06-08 | 重庆建工第三建设有限责任公司 | Intelligent force testing device of steel pipe scaffold based on wireless transmission |
| CN103912114A (en) * | 2014-03-28 | 2014-07-09 | 交通运输部公路科学研究所 | Intelligent scaffold fastener with function of measuring stress change |
| CN204212383U (en) * | 2014-10-29 | 2015-03-18 | 中建新疆建工集团第一建筑工程有限公司 | Plug-in type steel pipe scaffold |
| CN105067166A (en) * | 2015-07-28 | 2015-11-18 | 北京工业大学 | Sleeve type force transducer for support structures |
| CN207812988U (en) * | 2017-12-28 | 2018-09-04 | 晋江万芯晨电子科技有限公司 | The jacket-type scaffold pedestal of steel pipe stress can be monitored |
-
2017
- 2017-12-28 CN CN201711455000.0A patent/CN108019035A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE20219209U1 (en) * | 2002-12-11 | 2004-04-15 | Dipl.-Ing. Herbert Schulz Gerüstbau GmbH & Co. KG | Marker indicating a critical loading of scaffolding platforms with bulk materials comprises outer and inner hollow cylindrical components which are slidable relative to one another |
| CN102087151A (en) * | 2010-11-17 | 2011-06-08 | 重庆建工第三建设有限责任公司 | Intelligent force testing device of steel pipe scaffold based on wireless transmission |
| CN103912114A (en) * | 2014-03-28 | 2014-07-09 | 交通运输部公路科学研究所 | Intelligent scaffold fastener with function of measuring stress change |
| CN204212383U (en) * | 2014-10-29 | 2015-03-18 | 中建新疆建工集团第一建筑工程有限公司 | Plug-in type steel pipe scaffold |
| CN105067166A (en) * | 2015-07-28 | 2015-11-18 | 北京工业大学 | Sleeve type force transducer for support structures |
| CN207812988U (en) * | 2017-12-28 | 2018-09-04 | 晋江万芯晨电子科技有限公司 | The jacket-type scaffold pedestal of steel pipe stress can be monitored |
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