CN207798315U - A kind of device for measuring steel platform bracket pressure - Google Patents
A kind of device for measuring steel platform bracket pressure Download PDFInfo
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- CN207798315U CN207798315U CN201721828814.XU CN201721828814U CN207798315U CN 207798315 U CN207798315 U CN 207798315U CN 201721828814 U CN201721828814 U CN 201721828814U CN 207798315 U CN207798315 U CN 207798315U
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Abstract
The utility model provides a kind of device for measuring steel platform bracket pressure.Wherein, device for measuring steel platform bracket pressure includes a flexible bottom, at least one vertical supporting bar, at least one top cross bar, at least one bolt and at least one MEMS pressure sensor, flexible bottom is fixed on the bottom surface of bracket and is connect with one end of vertical supporting bar, the other end of vertical supporting bar is connected by one end of bolt and top cross bar, MEMS pressure sensor is set to the other end of top cross bar, and is contacted with the top surface of bracket.Using flexible bottom and MEMS pressure sensor, the height of pressure test device is greatly reduced, the stability of bracket and the convenience climbed will not be influenced being mounted with measuring device on bracket.The cost of MEMS pressure sensor itself is greatly reduced, while having and can be preferably minimized construction loss, thus greatly reduces detection construction cost.
Description
Technical field
The utility model is related to construction detection technique fields, more particularly to a kind of for measuring steel platform bracket pressure
Device.
Background technology
Steel platform is the Large Construction job platform for construction field, is mainly used for construction of super highrise building, Ke Yiyou
Effect improves working security, shortens the construction period and reduces construction cost.In work progress, the dead weight of steel platform is mainly by ox
Leg is (also referred to as：Bottom Cantilever Beams) it is fixed on and provides vertical supporting power on high-rise building Core Walls Structure side wall.Bracket generally uses
An important factor for high strength steel of rectangular solid cross section makes, and corbels support counter-force size is concerning steel platform safety, such as
Bracket comes to nothing or supports range insufficient, and reaction of bearing will be zero or be obviously reduced, and may result in local steel platform from recast
Occur moderate finite deformation under, or even safety accident occurs；If multiple corbels support counter-forces are insufficient or excessively high, i.e., steel platform supports
Point stress is asymmetric uneven, and steel platform will be made a degree of integral inclined deformation occur during long-time service, influence to make
Industry safety.Therefore, it is necessary to the reaction of bearing to steel platform bracket position effectively to be monitored, and guarantee the safety of construction.
At present for corbels support counter-force monitoring mainly use pressure gauge, due to the single corbels support counter-force of steel platform compared with
Greatly, it is generally changed within the scope of tens tons to up to a hundred tons.Therefore the pressure that the reaction of bearing for measuring bracket needs selected range larger
Power meter, but the height of wide range pressure gauge will also tend to it is bigger.In general, corresponding tens tons of pressure gauges for arriving up to a hundred tons of ranges
Height generally all in 10cm or more.The pressure gauge that height is more than 10cm is fixed below bracket, on the one hand, bracket is being born
In the case of high pressure, the pressure gauge of superelevation height may cause bracket vertical unstable phenomenon occur；On the other hand, bracket can be with
The whole movement of vertically climbing upwards of steel platform, pressure gauge can also move up therewith, and the pressure gauge of superelevation height can make to climb
It is inconvenient, and it is likely to result in that bracket is flexible to be restricted.In addition, bracket very big because of the pressure that bracket is born
Pressure can all convert to pressure gauge, under some extreme cases, may be damaged pressure gauge.
Therefore, it is necessary to study a kind of device for measuring steel platform bracket pressure of lightweight is developed, can adhere to
Under bracket, reaction of bearing larger under bracket is effectively measured.
Utility model content
The purpose of this utility model is to provide a kind of devices for measuring steel platform bracket pressure, to solve using biography
The problem of system pressure gauge can not safely and conveniently measure steel platform bracket force-bearing situation is pressed by the way that flexible bottom and MEMS is arranged
Force snesor greatly reduces the height of pressure test device, and ox will not be influenced being mounted with measuring device on bracket
The stability of leg and the convenience climbed, to realize safely, conveniently, the purpose of efficient detection bracket stressing conditions.
In order to solve the above-mentioned technical problem, the utility model provides a kind of device for measuring steel platform bracket pressure,
Including a flexible bottom, at least one vertical supporting bar, at least one top cross bar, at least one bolt and at least one MEMS
Pressure sensor, the flexible bottom is fixed on the bottom surface of the bracket and is connect with one end of the vertical supporting bar, described
The other end of vertical supporting bar is connect by the bolt with one end of the top cross bar, the MEMS pressure sensor setting
It is contacted in the other end of the top cross bar, and with the top surface of the bracket.
Optionally, described in measuring the device of steel platform bracket pressure, the flexible bottom to be high-strength rubber block,
The interval setting multilayer steel plates in the high-strength rubber block.
Optionally, described in measuring the device of steel platform bracket pressure, the thickness of the flexible bottom to be 1cm-
3cm, the steel plate thickness are 2mm-5mm.
Optionally, the device for measuring steel platform bracket pressure includes at least two MEMS pressure sensings
Device, the MEMS pressure sensor are spaced apart in the bracket top surface along the telescopic direction of the bracket.
Optionally, described in measuring the device of steel platform bracket pressure, the range of the MEMS pressure sensor
Range is in 70MPa-100MPa.
Using the device provided by the utility model for measuring steel platform bracket pressure, at least have below beneficial to skill
Art effect：
1, by setting flexible bottom and MEMS pressure sensor, the height of pressure test device is effectively reduced, even if
It is mounted with that measuring device will not influence the stability of bracket and the convenience climbed on bracket so as to the reality of bracket pressure
When monitoring be possibly realized.
2, MEMS pressure sensor is to measure the pressure on bracket by unloading manner, therefore there is no because of bracket
Pressure overload and the possibility for damaging sensor by pressure so that the waste of MEMS pressure sensor can be preferably minimized, to reduce
Construction cost.
Description of the drawings
Fig. 1 is the side view of the device for measuring steel platform bracket pressure of one embodiment of the utility model；
Fig. 2 is the structural schematic diagram of the flexible bottom in one embodiment of the utility model；
Fig. 3 is the vertical view of the device for measuring steel platform bracket pressure of one embodiment of the utility model；
Fig. 4 is the pressure of the bracket of another embodiment of the utility model and the fitting song of MEMS pressure sensor measured value
Line.
Reference numeral：1- flexible bottoms；2- vertical supporting bars；3- top cross bars；4- bolts；5-MEMS pressure sensors；
6- brackets；7- reserving holes.
Specific implementation mode
Below in conjunction with the drawings and specific embodiments to the utility model proposes one kind for measuring steel platform bracket pressure
Device be described in further detail.According to following explanation and claims, the advantages of the utility model and feature will be more clear
Chu.It should be noted that attached drawing is all made of very simplified form and uses non-accurate ratio, only to conveniently, lucidly
Aid in illustrating the purpose of the utility model embodiment.
Inventor has found, for the test of steel platform bracket pressure, main purpose be confirm bracket whether stress, stress is
It is no abundant, and the requirement of the accuracy to testing bracket pressure is not high.In addition, because in entire construction work, bracket meeting
It as steel platform is constantly climbed, and stretches repeatedly in the different stages, therefore the excessive measurement of volume can not possibly be carried on bracket
Device.Therefore, inventor is directed to actual demand, it is proposed that in bracket pressure test sequence, it is necessary to meet following two and want
It asks：Measuring device can be moved up and down with bracket, and size is smaller in height, be not much different on the width with former cross-sectional width；
The requirement of big pressure test range can be met.For this purpose, the utility model provides one kind based on dependence MEMS pressure sensor
The device and method of bracket pressure is measured by unloading manner.
Fig. 1 is the side view of the device for measuring steel platform bracket pressure of one embodiment of the utility model, such as Fig. 1 institutes
Show, one embodiment of the utility model is used to measure the device 100 of steel platform bracket pressure, including a flexible bottom 1, at least one
Vertical supporting bar 2, at least one top cross bar 3, at least one bolt 4 and at least one MEMS pressure sensor
(Microelectro Mechanical Systems) 5, flexible bottom 1 be fixed on the bottom surface of bracket 6 and with vertical supporting bar 2
One end connection, the other end of vertical supporting bar 2 connect by bolt 4 with one end of top cross bar 3, MEMS pressure sensor 5
It is set to the other end of top cross bar 3, and is contacted with the top surface of bracket 6.
By tightening bolt 4, MEMS pressure sensor 5 can be pressed on the top surface of bracket 6, MEMS pressure sensor
The pressure of 5 impressions is the pressure that bolt 4 is applied to bracket 6 by top cross bar 3, stubborn tighter, the MEMS pressure sensor of bolt 4
5 pressure values that measure are bigger.When bracket 6 is when carrying stress, bracket 6 can apply pressure to the flexible bottom 1 positioned at its bottom,
It is the process of a discharge degree for MEMS pressure sensor 5, at this time for when bracket 6 does not stress,
The pressure that MEMS pressure sensor 5 is experienced becomes smaller, that is to say, that passes through the change of 5 experienced pressure of MEMS pressure sensor
Change, can reflect the variation of 6 stress size of bracket indirectly, the measured value of MEMS pressure sensor 5 is smaller, illustrate bracket 6 by
Power is bigger.
In the carrying stress on removal bracket 6, do not stress initially in order to ensure bracket 6 can be restored to as much as possible
Location status, as shown in Fig. 2, flexible bottom 1 can select high-strength rubber block, such as neoprene, natural rubber etc. preferred,
Multilayer steel plates 11 can also be set at interval in the flexible bottom 1 that high-strength rubber block is made, pass through high-strength rubber and multilayer steel plates
Setting, both ensure that the elasticity of flexible bottom 1, and also ensured the bearing capacity of flexible bottom 1.In general, the thickness of flexible bottom 1
Degree is 1cm-3cm, and the thickness of steel plate 11 is 2mm-5mm.
MEMS pressure sensor refer to collection microsensor, actuator and signal processing and control circuit, interface circuit,
Communication and power supply are in the Micro Electro Mechanical System of one.MEMS pressure sensor can use the designing technique and system of similar integrated circuit
Technique is made, the mass production of high-precision, low cost is carried out, pressure control is made to become simple, easy-to-use and intelligent.Traditional machine
Tool pressure sensor is to be based on metal elastomer stress deformation, is exported by mechanical quantity flexible deformation to electricity conversion, therefore it is not
May be as MEMS pressure sensor, as integrated circuit is so small, and cost also significantly larger than MEMS pressure sensor.
Relative to traditional mechanical quantity sensor, MEMS pressure sensor it is smaller, maximum thickness be no more than one centimetre, phase
For traditional " machinery " manufacturing technology, size substantially reduces, cost performance increases substantially.
Measuring device based on MEMS pressure sensor 5 and flexible bottom 1, the MEMS pressure sensor 5 of diaphragm type
With the flexible bottom 1 that thickness is 1cm-3cm so that the thickness of entire measuring device is effectively controlled, even if being installed on bracket 6
Measuring device will not influence the stability of bracket 6 and the convenience climbed so that become to real-time monitor of bracket 6 pressure
It may.In general, the range ability of MEMS pressure sensor 5 is in 70MPa-100MPa.
Fig. 3 is the vertical view for measuring steel platform bracket pressure apparatus of one embodiment of the utility model.Usually one
On a bracket 6, one MEMS pressure sensor 5 of setting can measure the pressure carried on corresponding bracket 6.In reality
In engineering practice, other than needing to know the pressure carried on bracket 6, it is also necessary to know whether bracket 6 fully extend into core
In reserving hole 7 on heart cylinder, if bracket 6 is not extend into fully in reserving hole 7, bracket 6 is to reserving hole 7
Pressure can be excessive, under extreme case, can cause the destruction to reserving hole 7, to cause entire steel platform unstability.For this purpose, can
To be spaced apart multiple MEMS pressure sensors 5 in the telescopic direction along bracket 6, by measuring multiple MEMS pressure sensors
5 stress, the measured value of more multiple MEMS pressure sensors 5 have illustrated bracket 6 if multiple measured values are not much different
It fully extend into reserving hole 7, if multiple measured values differ greatly, illustrates that bracket 6 does not extend into preformed hole fully
In hole 7.
Above-mentioned in measuring the device 100 of steel platform bracket pressure, although MEMS pressure sensor therein 5 measures
There are certain relationships for value and the pressure of bracket 6, but the reflection of 5 measured value of MEMS pressure sensor is top cross bar 3 and ox
Pressure between leg 6, the not pressure between bracket 6 and flexible bottom 1, in order to establish 5 measured value of MEMS pressure sensor with
Correspondence between the pressure value of bracket 6, it is also necessary to which the device 100 for measuring steel platform bracket pressure is demarcated.For
This, the utility model also provides a kind of scaling method for measuring the device of steel platform bracket pressure.It connects below and combines Fig. 1
To Fig. 3, the scaling method of the device for measuring steel platform bracket pressure is described in detail, scaling method includes：
Step 1：When bracket 6 is in non-stress, bolt 4 is tightened, the measured value of MEMS pressure sensor 5 is made to arrive
Up to the 70%-80% of its full scale；
When integral steel platform installs original state, all brackets 6 can all be stretched to the reserving hole 7 on Core Walls Structure
Interior, artificial visual confirms that every bracket 6 all fully stretches in reserving hole 7, and at this moment all brackets 6 are all in non-stress shape
State tightens bolt 4, and the measured value of MEMS pressure sensor 5 is made to reach the 70%-80% of its full scale.For example, MEMS pressure passes
If the full scale of sensor 5 is 100MPa, bolt 4 is tightened, the measured value of MEMS pressure sensor 5 is made to reach 70MPa-
80MPa。
Step 2：When bracket 6 is in initial stressed state, the initial pressure and MEMS pressure sensor 5 of bracket 6 are recorded
Measured value；
When integral steel platform installation is complete be prepared to enter into Construction State when, the dead weight of integral steel platform can be converted to every ox
On leg 6, at this moment actual initial pressure is suitable with initial design values on every bracket 6, and bracket 6 is because by initial pressure to soft
Property pedestal 1 apply downward pressure, be equivalent to for MEMS pressure sensor 5 and unloaded partial pressure, to can make
The measured value of MEMS pressure sensor 5 reduces, and records the initial pressure of bracket 6 and MEMS pressure sensor 5 under this state
Measured value.
Step 3：Using 6 downward on-load pressure of jack pair bracket, make jack according to the 3%- of 6 initial stressed of bracket
4% multistage loadings, often load level-one, record the measured value of the pressure and MEMS pressure sensor 5 of bracket 6 at that time；
By 6 downward multistage loadings pressure of jack pair bracket, it is equivalent to and unloads pressure step by step to MEMS pressure sensor 5
Power, in order to avoid bracket 6 deforms, the series of multistage loadings is no more than 10 grades, often loads level-one, bracket 6 at that time under recorder
The measured value of pressure and corresponding MEMS pressure sensor 5.For example, the initial pressure of bracket 6 is 60tonf, pass through jack pair
The power of every grade of load of 6 downward on-load pressure of bracket is 1.8tonf-2.4tonf, and jack is accumulated to 6 downward on-load pressure of bracket
No more than 24tonf.
Step 4：The gradually pressure of removal jack pair bracket 6 makes jack according to the 3%-4% of 6 initial stressed of bracket
Removal step by step records the measured value of the pressure and MEMS pressure sensor 5 of bracket 6 at that time per removal level-one；
With the process in step 3 on the contrary, after the power that jack loads downwards reaches peak value, pass through jack pair bracket 6
Downward unloading pressure step by step, until whole pressure of removal jack, this process are equivalent to MEMS pressure sensor 5 step by step
On-load pressure, it is preferred that in step 4, per level-one unloading pressure it is equal with on-load pressure in step 3, record when
When bracket 6 pressure and corresponding MEMS pressure sensor 5 measured value.
Step 5：Utilize the measurement of the pressure and corresponding MEMS pressure sensor 5 of the bracket 6 in step 2 to step 4
Value draws the matched curve of the pressure of bracket 6 and the measured value of MEMS pressure sensor 5.
During in step 2 to step 4 to 6 multistage loadings of bracket and unloading pressure, every grade of 6 pressure of bracket and
The measured value of corresponding MEMS pressure sensor 5 can draw out the measured value of the pressure and MEMS pressure sensor 5 of bracket 6
Matched curve.As shown in figure 4, being when the initial pressure of bracket 6 is 60tonf, every grade of load or unloading pressure are 2tonf
When, measured value and the bracket 6 of MEMS pressure sensor 5 bear the matched curve of pressure.
Pass through similar matched curve as shown in Figure 4, so that it may according to the measured value of MEMS pressure sensor 5, directly to calculate
Go out bracket 6 bears pressure.If bracket 6 be in stress it is increased during when, utilize unloading curve in Fig. 4 to find
Correspondence, if bracket 6 is when being in during stress reduces, the loading curve in Fig. 4 to be utilized to find correspondence.
On the basis of above-mentioned scaling method, the utility model also provides a kind of above-mentioned matched curve of utilization and measures steel platform
The method of bracket pressure, including：
Step 1：All brackets of steel platform are demarcated one by one；
In general, a steel platform includes many brackets, the own wt and load weight of integral steel platform all pass through
Bracket shifts on Core Walls Structure, in order to monitor stability of the integral steel platform in entire work progress, needs to each bracket
Stress be monitored, need to demarcate all brackets in steel platform one by one using above-mentioned scaling method thus, to every
A bracket forms corresponding matched curve.
Step 2：When steel platform is climbed to predetermined altitude, bracket is stretched in reserving hole, when the load-bearing of steel platform
When on conversion to bracket, the measured value of MEMS pressure sensor is read one by one, and calculates correspondence according to corresponding matched curve
Bracket pressure.
With the propulsion of construction speed, steel platform will constantly climb up liter, and steel platform at various height, can pass through
MEMS pressure sensor can understand corresponding ox in real time by transmitting measured values to tentation data platform, according to corresponding matched curve
The actual pressure of leg.
For entire platform, whether the stress of multiple brackets is uniform, is that one of influence steel platform stability is important
Factor can calculate the variance of the pressure value of all brackets to understand the stressing conditions of multiple brackets, when variance be less than etc.
When predetermined permissible value, illustrate the uniform force of all brackets, allows to carry out subsequent construction；When variance is more than predetermined permissible value
When, illustrate the discontinuity of all brackets, needs to confirm stretching into degree and ensuring that all brackets fully stretch into for bracket one by one
In reserving hole, variance is then recalculated, after the variance is less than or equal to predetermined permissible value, then carries out subsequent construction.
In conclusion provided by the utility model in measuring the device of steel platform bracket pressure, utilizing flexibility
Pedestal and MEMS pressure sensor, greatly reduce the height of pressure test device, even if being mounted with measuring device on bracket
It will not influence the stability of bracket and the convenience climbed.MEMS pressure sensor is intelligent so as to bracket pressure simultaneously
It is real-time monitoring be possibly realized.The technique productions manufacture of integrated circuit may be used in MEMS pressure sensor so that MEMS pressure
The cost of sensor is greatly reduced.In addition, measurement method provided by the utility model is to measure bracket by unloading manner
On pressure, therefore there is no the possibilities for damaging because of bracket pressure overload sensor by pressure so that MEMS pressure sensor
Waste can be preferably minimized, to reduce construction cost.
Foregoing description is only the description to the utility model preferred embodiment, not to any limit of the scope of the utility model
Calmly, any change, the modification that the those of ordinary skill in the utility model field does according to the disclosure above content, belong to right and want
Seek the protection domain of book.
Claims (5)
1. a kind of for measuring the device of steel platform bracket pressure, which is characterized in that including a flexible bottom, at least one vertical
Supporting rod, at least one top cross bar, at least one bolt and at least one MEMS pressure sensor, the flexible bottom are fixed
It is connect in the bottom surface of the bracket and with one end of the vertical supporting bar, the other end of the vertical supporting bar passes through the spiral shell
Bolt is connect with one end of the top cross bar, and the MEMS pressure sensor is set to the other end of the top cross bar, and
It is contacted with the top surface of the bracket.
2. the device for measuring steel platform bracket pressure as described in claim 1, which is characterized in that the flexible bottom is
High-strength rubber block, the interval setting multilayer steel plates in the high-strength rubber block.
3. the device as claimed in claim 2 for measuring steel platform bracket pressure, which is characterized in that the flexible bottom
Thickness is 1cm-3cm, and the steel plate thickness is 2mm-5mm.
4. the device for measuring steel platform bracket pressure as claimed any one in claims 1 to 3, which is characterized in that packet
At least two MEMS pressure sensors are included, the MEMS pressure sensor is in bracket top surface the stretching along the bracket
Contracting direction is spaced apart.
5. the device as claimed in claim 4 for measuring steel platform bracket pressure, which is characterized in that the MEMS pressure passes
The range ability of sensor is in 70MPa-100MPa.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721828814.XU CN207798315U (en) | 2017-12-25 | 2017-12-25 | A kind of device for measuring steel platform bracket pressure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721828814.XU CN207798315U (en) | 2017-12-25 | 2017-12-25 | A kind of device for measuring steel platform bracket pressure |
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| Publication Number | Publication Date |
|---|---|
| CN207798315U true CN207798315U (en) | 2018-08-31 |
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ID=63280779
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721828814.XU Active CN207798315U (en) | 2017-12-25 | 2017-12-25 | A kind of device for measuring steel platform bracket pressure |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108168758A (en) * | 2017-12-25 | 2018-06-15 | 上海建工集团股份有限公司 | A kind of device and method for being used to measure steel platform bracket pressure |
-
2017
- 2017-12-25 CN CN201721828814.XU patent/CN207798315U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108168758A (en) * | 2017-12-25 | 2018-06-15 | 上海建工集团股份有限公司 | A kind of device and method for being used to measure steel platform bracket pressure |
| CN108168758B (en) * | 2017-12-25 | 2023-12-05 | 上海建工集团股份有限公司 | Device and method for measuring bracket pressure of steel platform |
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