CN207812988U - The jacket-type scaffold pedestal of steel pipe stress can be monitored - Google Patents
The jacket-type scaffold pedestal of steel pipe stress can be monitored Download PDFInfo
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- CN207812988U CN207812988U CN201721871379.9U CN201721871379U CN207812988U CN 207812988 U CN207812988 U CN 207812988U CN 201721871379 U CN201721871379 U CN 201721871379U CN 207812988 U CN207812988 U CN 207812988U
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Abstract
The utility model is related to scaffold chassis technology fields, particular for jacket-type scaffold pedestal, it is related to a kind of jacket-type scaffold pedestal monitoring steel pipe stress, further include the intelligent wireless strain monitoring device for the strain transducer and outside for being integrated in outer steel pipe root including steel plate chassis, outer steel pipe.The strain transducer is resistance strain sensor, uses bridge circuit for measuring circuit, operating mode can be one kind in a quarter bridge, half-bridge or full-bridge.The information of strain transducer acquisition inputs intelligent wireless strain monitoring device by signal input interface, after signal condition, A/D conversions, analyzing processing is carried out by microcontroller, and real time data and warning message are sent to PC control terminals by radio transmitting device, to realize the real-time monitoring changed to scaffold pedestal steel penstock stress.The utility model can find security risk of scaffold during installation and construction usage in time, greatly facilitate the security monitoring to scaffold.
Description
Technical field
The utility model is related to scaffold chassis technology fields, and particular for jacket-type scaffold pedestal, being related to one kind can
Monitor the jacket-type scaffold pedestal of steel pipe stress.
Background technology
Scaffold is indispensable temporary facility in construction, be for ensure high-rise working safely, be smoothed out and apply
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 safety accident 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 pedestal, can anti-sliding stop and uneven subsidence.To the stress variation of scaffold pedestal
It is monitored in real time, early warning can be made when big variation occurs for pedestal stress, and then timely to the corresponding site of scaffold
It checked, adjusted, overall collapse or the partial collapse for preventing scaffold avoid casualties to reduce safety accident.
Therefore, other than 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 safety accident that seat, which monitor in real time,.
Utility model content
In order to prevent collapsing for scaffold, the utility model provides a kind of jacket-type foot hand monitoring steel pipe stress
Frame pedestal is monitored for the stress variation of outer steel pipe, early warning is made when big variation occurs for its stress in real time.
In order to solve the above technical problems, the utility model takes following technical scheme：One kind can monitor steel pipe stress
Jacket-type scaffold pedestal, including steel plate chassis, outer steel pipe, the strain transducer for being integrated in outer steel pipe root and outside
Intelligent wireless strain monitoring device.
Specifically, the jacket-type scaffold pedestal, outer steel pipe internal diameter is bigger 2mm than upright bar outer diameter, and when use will stand
Bar is inserted into 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 integrated strain transducer of the jacket-type scaffold pedestal is resistance strain sensor.
Further, the resistance strain sensor uses the change of strain gage testing scaffold pedestal steel penstock stress
Change.
Preferably, the resistance strain sensor uses bridge circuit for 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 include 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 is answered comprising four resistance
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 acquisition carry out error compensation and necessary put
Big processing.
Preferably, the A/D converter converts analog signals into digital signal, is convenient for signal processing and transmission.
Preferably, the microcontroller carries out digital filtering, analyzing processing to the digital signal that A/D converter exports, and
It is sent by radio transmitting device.
The utility model has the beneficial effects that：By integrating strain transducer on scaffold pedestal and connecting intelligent wireless
Strain monitoring device monitors the stress variation of scaffold pedestal steel pipe in real time, and will be real-time by wireless transmitting system
Data and warning message are sent to PC control terminals, to find that safety of scaffold during installation and construction usage is hidden in time
Suffer from, greatly facilitates the security monitoring to scaffold.
Description of the drawings
Fig. 1 is the structural schematic diagram for the jacket-type scaffold pedestal that the utility model can monitor steel pipe stress.
Fig. 2 is the sectional view of Fig. 1.
Fig. 3 is the vertical view of Fig. 1.
Fig. 4 is the principles of the present invention structure diagram.
Fig. 5 is the jacket-type scaffold understructure vertical view that six resistance strain gages are integrated in embodiment 4.
Fig. 6 is the jacket-type scaffold understructure vertical view that eight resistance strain gages are integrated in embodiment 5.
Specific implementation mode
The utility model is described in detail below in conjunction with attached drawing.
Embodiment 1
Jacket-type scaffold understructure such as Fig. 1-3 of steel pipe stress can be monitored in the utility model, this practicality is new
Implementation principle structure such as Fig. 4 of type.
As shown in Figs. 1-3, the jacket-type scaffold pedestal for monitoring steel pipe stress includes outer steel pipe 1, steel
Board bottom disk 2, the resistance strain gage 3-6 of strain transducer for being integrated in 1 root of outer steel pipe and the intelligent wireless strain of outside are supervised
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 pedestal are measured first, and according to the Structure Calculation of scaffold just
In the case of being often used, different operation can caused by stress variation value, set up stress variation early warning value accordingly, can be arranged different pre-
Alert rank.During the work time, when stress variation is more than 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 being stored in the intelligent wireless strain monitoring device and history warning message.
Preferably, the strain transducer is resistance strain sensor.The resistance strain sensor uses resistance-strain
Piece 3-6 measures the variation of scaffold pedestal stress, and uses bridge circuit for 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 about housing steel
1 axisymmetrical of pipe, resistance strain gage5 Hes6 about 1 axisymmetrical of outer steel pipe.By resistance strain gage when 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 integrated positional symmetry of two resistance strain gages of electric bridge, on the contrary, when foil gauge generates deformation because of stress, electric bridge loses stress
It goes to balance, to generate differential signal.This differential signal reflects the variation of scaffold pedestal steel penstock stress, accesses intelligent wireless
Strain monitoring device.
The signal of the signal conditioner pair of strain sensors acquisition carries out error compensation and necessary enhanced processing, place
Signal after reason accesses A/D converter.
The A/D converter converts analog signals into digital signal, is convenient for signal processing and transmission, preferably high-precision
The A/D converter of degree, 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.In turn, the microcontroller counts signal accordingly
According to processing, analyze and determine whether stress variation is more than corresponding early warning value, and result is passed through into nothing in the case where early warning occurs
Line Transmission system is reported to the ends PC.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 monitoring steel pipe stress of the utility model
With embodiment 1, the strain transducer is resistance strain sensor for setting and application principle, and uses bridge circuit to measure electricity
Road.The bridge circuit uses the working method of a quarter bridge, including four identical a quarter bridge circuits, each four points
One of bridge circuit include a resistance strain gage, four resistance strain gage 3-6 are uniformly distributed, and are integrated in the root of outer steel pipe 1.
When work, each resistance strain gage accesses an a quarter bridge circuit, and the stress to measure 1 different direction of outer steel pipe becomes
Change.
Embodiment 3
As shown in Figs 1-4, a kind of jacket-type scaffold understructure monitoring steel pipe stress of the utility model
With embodiment 1, the strain transducer is resistance strain sensor for setting and application principle, and uses bridge circuit to measure electricity
Road.The bridge circuit uses the working method of full-bridge, including a full-bridge circuit.The full-bridge circuit includes four identical
Resistance strain gage 3-6, is uniformly distributed, and is integrated in the root of outer steel pipe 1.When work, opposite foil gauge is accessed into electric bridge
Adjacent two-arm makes four measured signals be connected into two differential symmetrical full-bridge working forms.Due to opposite foil gauge stress phase
Instead, when foil gauge generates deformation because of stress, electric bridge disequilibrium, to generate differential signal, access intelligent wireless strain prison
Measurement equipment.
Embodiment 4
As shown in Figs 1-4, a kind of jacket-type scaffold understructure monitoring steel pipe stress of the utility model
With embodiment 1, the strain transducer is resistance strain sensor for setting and application principle.As shown in figure 5, the resistance-strain
Sensor is integrated in the root of outer steel pipe 1 using six resistance strain gage 3-8, and is uniformly distributed.The resistance-strain sensing
Device adds a kind of working method in a half-bridge using six a quarter bridges, three half-bridges or a full-bridge.Using six electricity
It is wider to the covering of outer steel pipe 1 to hinder foil gauge 3-8, thus the sensitivity monitored to its stress variation can be improved.
Embodiment 5
As shown in Figs 1-4, a kind of jacket-type scaffold understructure monitoring steel pipe stress of the utility model
With embodiment 1, the strain transducer is resistance strain sensor for setting and application principle.As shown in fig. 6, the resistance-strain
Sensor is integrated in the root of outer steel pipe 1 using eight resistance strain gage 3-10, and is uniformly distributed.The resistance-strain sensing
Device uses a kind of working method in eight a quarter bridges, four half-bridges or two full-bridges.Using eight resistance strain gage 3-
The covering of 10 pairs of outer steel pipes 1 more comprehensively, thus can further increase to it stress comprehensive monitoring of its all angles
The sensitivity of stress variation monitoring.
The present invention is not limited to the above embodiments, and those skilled in the art are made any to the above embodiment
Conspicuously improved or change, all protection domain without departing from the design of the utility model and appended claims.
Claims (8)
1. a kind of jacket-type scaffold pedestal monitoring steel pipe stress, including steel plate chassis, outer steel pipe, feature exist
In, further include be integrated in outer steel pipe root strain transducer and outside intelligent wireless strain monitoring device.
2. the jacket-type scaffold pedestal according to claim 1 for monitoring steel pipe stress, which is characterized in that described
Scaffold understructure form is jacket-type, and the outer steel pipe internal diameter is bigger 2mm than upright bar outer diameter, is inserted into upright bar when use outer
It covers in steel pipe.
3. the jacket-type scaffold pedestal according to claim 1 for monitoring steel pipe stress, which is characterized in that described
Intelligent wireless strain monitoring device includes signal input interface, signal conditioner, A/D converter, microcontroller and wireless biography
The output of defeated device, the strain transducer is 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 pedestal according to claim 1 for monitoring steel pipe stress, which is characterized in that described
Strain transducer is resistance strain sensor.
5. the jacket-type scaffold pedestal according to claim 4 for monitoring steel pipe stress, which is characterized in that described
Resistance strain sensor uses the variation of strain gage testing outer steel pipe Root Stress.
6. the jacket-type scaffold pedestal according to claim 4 for monitoring steel pipe stress, which is characterized in that described
Resistance strain sensor uses bridge circuit for measuring circuit.
7. the jacket-type scaffold pedestal according to claim 6 for monitoring steel pipe stress, which is characterized 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 pedestal according to claim 5 for monitoring steel pipe stress, which is characterized in that described
Resistance strain gage is uniformly integrated in the root of outer steel pipe.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721871379.9U CN207812988U (en) | 2017-12-28 | 2017-12-28 | The jacket-type scaffold pedestal of steel pipe stress can be monitored |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721871379.9U CN207812988U (en) | 2017-12-28 | 2017-12-28 | The jacket-type scaffold pedestal of steel pipe stress can be monitored |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207812988U true CN207812988U (en) | 2018-09-04 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201721871379.9U Active CN207812988U (en) | 2017-12-28 | 2017-12-28 | The jacket-type scaffold pedestal of steel pipe stress can be monitored |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108019035A (en) * | 2017-12-28 | 2018-05-11 | 晋江万芯晨电子科技有限公司 | The jacket-type scaffold base of steel pipe stress can be monitored |
| CN111678627A (en) * | 2020-05-21 | 2020-09-18 | 北京交通大学 | Stress test method for shield tunnel segment connecting bolt |
-
2017
- 2017-12-28 CN CN201721871379.9U patent/CN207812988U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108019035A (en) * | 2017-12-28 | 2018-05-11 | 晋江万芯晨电子科技有限公司 | The jacket-type scaffold base of steel pipe stress can be monitored |
| CN111678627A (en) * | 2020-05-21 | 2020-09-18 | 北京交通大学 | Stress test method for shield tunnel segment connecting bolt |
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