CN105865781A - Strip load measuring device based on double-Wheatstone-bridge connection - Google Patents
Strip load measuring device based on double-Wheatstone-bridge connection Download PDFInfo
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- CN105865781A CN105865781A CN201610419917.4A CN201610419917A CN105865781A CN 105865781 A CN105865781 A CN 105865781A CN 201610419917 A CN201610419917 A CN 201610419917A CN 105865781 A CN105865781 A CN 105865781A
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- China
- Prior art keywords
- connector
- tooth bar
- huitong
- measuring device
- double
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M13/00—Testing of machine parts
- G01M13/02—Gearings; Transmission mechanisms
- G01M13/021—Gearings
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Force Measurement Appropriate To Specific Purposes (AREA)
Abstract
The invention relates to the field of an ocean ascending and descending platform, in particular to a strip load measuring device based on double-Wheatstone-bridge connection. The strip load measuring device comprises a rack and a measuring device, wherein the measuring device comprises a connecting element, a sensor elastomer and sensors; each sensor is a double-shearing strain sheet; each senor is provided with two strain sheets; two sensors are totally used, and respectively form Wheatstone-bridge connections; the two Wheatstone-bridge connections are in mutual independent connection, parallel connection or serial connection. By using the structure, two independent Wheatstone measuring circuits are respectively used for measuring the load of the gear; when one Wheatstone measuring circuit fails and cannot work, the other Wheatstone measuring circuit can enable the measuring device to normally operate; the stability is improved.
Description
Technical field
The present invention relates to ocean lifting platform field, be specifically related to a kind of bar connect based on this bridging of double Huitong and carry
Lotus measurement apparatus.
Background technology
Big load gear, rack gear unit are the key function module realizing ocean platform equipment lifting, by
Load is born big during working platform, load skewness, and stage-geared is in power load
In lotus transformation process, the reason such as physical parameter change of each functional part of driving-chain, causes existing lifting unit
There is security risk in various degree, what current means of testing can't be effective, complete is carried out load capacity
Directly test, causes the structure optimization of existing sea work lift unit and transformation to lack direct guide data.
At present both at home and abroad not for 500T suffered by the gear of lifting of ocean platform unit gear-box, tooth bar and with
The direct measurement apparatus of upper load.Existing test mainly has a two schemes:
1) by the measurement of the physical quantity such as cylinder pressure, power of motor, indirectly calculate through theory conversion
To the load suffered by the gear of lifting of ocean platform unit gear-box, tooth bar；This method belongs to measurement indirectly,
But owing to existing, system is delayed, energy loss, and can not eliminate the friction of each link of whole driving-chain, energy
The factors such as amount loss and installation system error, utilize the load value that relevant measurement apparatus measurement obtains the most not
Accurately.
2) on the other hand, by installing foil gauge on gear, tooth bar, or connect at existing gear, tooth bar
Install load transducer in structure additional and carry out the measurement of load；Both approaches broadly falls into directly measurement, uses peace
The method of dress foil gauge is limited to work process and the working condition of gear-box, and foil gauge cannot be installed, technically
And it is infeasible.Use the method installing load transducer additional, the attachment structure of unit gear-box need to be correlated with
Big structure of modification, same and infeasible.
It addition, as the technology in ocean lifting platform field, how to improve unfailing performance the most crucial.
Summary of the invention
It is an object of the invention to propose a kind of bar load-measuring device connect based on this bridging of double Huitong, overcome
Problem above, measures the rack structure of the extra large work hoistable platform of big load, improves the stability measured.
For reaching this purpose, the present invention by the following technical solutions:
A kind of bar load-measuring device connect based on this bridging of double Huitong, including tooth bar and measurement apparatus, described
Measurement apparatus includes connector, sensor elastomer and sensor；
Described sensor elastomer is cylindrical structural, through and to be installed on described tooth bar corresponding with connector
Hole, make described tooth bar be installed on described connector；
Described sensor is installed on described sensor elastomer, is located at the right of described tooth bar and connector contact surface
Answer position, measure the stressing conditions between described tooth bar and connector.
Described sensor is double-shear foil gauge, and each described sensor is provided with two foil gauges, has two
Described sensor；
If totally four described foil gauges of tradition device are respectively R1, R2, R3 and R4 described in two of which, if
Described in another two, totally four described foil gauges of tradition device are respectively R5, R6, R7 and R8；
Described R1, R2, R3 and R4, and described R5, R6, R7 and R8 separately constitute this bridging of Huitong
Connect；Two these bridgings of described Huitong connect separate connection, in parallel or in series.
Described sensor elastomer be radially provided with two cannelures, be located at the position of tooth bar and connector contact surface
Putting, described sensor is installed in described cannelure.
Described cannelure is provided with through hole, radially across the central shaft of described sensor elastomer；One described logical
Two described sensors it are provided with in hole；The inwall in the centre position of described through hole is located at by two described sensors,
And relative both sides.
Described through hole is perpendicular to the Impact direction between described tooth bar and connector.
Described sensor is double-shear foil gauge, and each described sensor is provided with two foil gauges；
If totally four described foil gauges of in same described through hole two described tradition devices be respectively R1, R2,
R3 and R4, if totally four described foil gauges of in another through hole two described tradition devices be respectively R5,
R6, R7 and R8；
Described R1, R2, R3 and R4, and described R5, R6, R7 and R8 separately constitute this bridging of Huitong
Connect；Two these bridgings of described Huitong connect separate connection, in parallel or in series.
The installation direction of described foil gauge is 45 degree of angles with the central shaft of described sensor elastomer.
The end face at described sensor elastomer two ends flushes in the side of described connector, and described sensor is elastic
Body is fixed on connector by chuck, and the end face of described sensor elastomer both sides is located at by described chuck；Described
The axially arranged of sensor elastomer has wiring groove, and described wiring groove connects the end face of described sensor elastomer,
The end face of described sensor elastomer is installed and is provided with binding post；Wire one end connects described sensor, and leads to
Crossing described wiring groove, the other end connects described binding post.
Described measurement apparatus is located at the end of described tooth bar；One end of described tooth bar or two ends are provided with described survey
Amount device.
Described connector is installed on piston rod by screw thread, and described piston rod is positioned at relative with described tooth bar another
Side；The other end of described piston rod is installed on hydraulic cylinder.
Described connector is provided with U-shaped structure, and described tooth bar is installed in described U-shaped structure；Or described tooth
Bar is provided with U-shaped structure, and described connector is installed in described U-shaped structure.
The present invention distinguishes the load of prototype gears by above structure, two these measuring circuits of independent Huitong,
When this measuring circuit of one of them Huitong goes wrong and can not work, this measuring circuit of another one Huitong is also
Can ensure that measurement apparatus can be properly functioning, improve stability.
Accompanying drawing explanation
Fig. 1 be one embodiment of the present of invention main TV structure schematic diagram (wherein connector, with piston rod
Junction broken section)；
Fig. 2 is that (its middle gear and connector are section view for the plan structure schematic diagram of one embodiment of the present of invention
View)；
Fig. 3 is the sensor elastomer plan structure schematic diagram of one embodiment of the present of invention；
Fig. 4 is the B-B sectional structure schematic diagram of Fig. 3；
Fig. 5 is the A-A sectional structure schematic diagram of Fig. 3；
Fig. 6 is that this bridging of Huitong of foil gauge R1, R2, R3 and R4 of one embodiment of the present of invention connects electricity
Road schematic diagram；
Fig. 7 is that this bridging of Huitong of foil gauge R5, R6, R7 and R8 of one embodiment of the present of invention connects electricity
Road schematic diagram.
Tooth bar 1, connector 2, sensor elastomer 3, cannelure 31, through hole 32, wiring groove 33, should
Become sheet 41, piston rod 5, chuck 6, binding post 7.
Detailed description of the invention
Further illustrate technical scheme below in conjunction with the accompanying drawings and by detailed description of the invention.
As shown in Figure 1 to Figure 2, a kind of bar load-measuring device connect based on this bridging of double Huitong, including tooth
Bar 1 and measurement apparatus, described measurement apparatus includes connector 2, sensor elastomer 3 and sensor；
Described sensor elastomer 3 is cylindrical structural, passes and is installed on described tooth bar 1 and connector 2
Corresponding hole, makes described tooth bar 1 be installed on described connector 2；
Described sensor is installed on described sensor elastomer 3, is located at described tooth bar 1 and connector 2 contact surface
Correspondence position, measure the stressing conditions between described tooth bar 1 and connector 2.
Described sensor elastomer 3 is being positioned at the correspondence position of described tooth bar 1 and connector 2 contact surface, its
Subjected to stress is maximum, and deformation is the most maximum, and described sensor is located at this position and can be carried by maximally effective measurement tooth bar
Lotus.
Sensor elastomer 3 has the function of bearing pin, connects described tooth bar 1 and connector 2, the most also has
Measure the function of described tooth bar 1 load；Solve existing method of testing, measuring technology can not effectively eliminate examination
Test machine alignment error, problem that load data measuring accuracy is affected by kinematic error, and solve existing survey
Electricity testing device can not effectively and testing machine structure is effectively matched etc. not enough, thus be that the structure of extra large work lift unit is excellent
Change and transformation lacks the direct guide data of offer.
As shown in Figure 2 to Figure 3, described sensor elastomer 3 be radially provided with two cannelures 31, be located at
Tooth bar 1 and the position of connector 2 contact surface, described sensor is installed in described cannelure 31.
Described cannelure 31 makes the diameter of described sensor elastomer 3 less, is more easily generated shape during stress effect
Becoming, the load being herein more easy to measure described tooth bar 1 is located at by described sensor.
As shown in Figures 2 to 5, described cannelure 31 is provided with through hole 32, elastic radially across described sensor
The central shaft of body 3；It is provided with two described sensors in one described through hole 32；Two described sensors are located at
The inwall in the centre position of described through hole 32, and relative both sides.
Described sensor is positioned at the center of described sensor elastomer 3, and the load data of measurement is as the criterion most
Really.And relative to axially offering the hole installing described sensor, radially offer described through hole 32 and be more convenient for processing,
Also it is more convenient for described sensor is installed.
As in figure 2 it is shown, described through hole 32 is perpendicular to the Impact direction between described tooth bar 1 and connector 2.
The inwall making described sensor be installed is perpendicular to described Impact direction, and the load data of measurement is the most accurate.
As shown in Figures 4 to 7, described sensor is double-shear foil gauge, and each described sensor is provided with two
Individual foil gauge 41；
If totally four described foil gauges 41 of two described tradition devices 4 in same described through hole 32 are respectively
R1, R2, R3 and R4, if totally four described strains of two described tradition devices 4 in another through hole 32
Sheet 41 is respectively R5, R6, R7 and R8；
Described R1, R2, R3 and R4, and described R5, R6, R7 and R8 separately constitute this bridging of Huitong
Connect；Two these bridgings of described Huitong connect separate connection, in parallel or in series.
Two these measuring circuits of independent Huitong measure the load of described gear 1 respectively, when one of them Huitong
This measuring circuit goes wrong when can not work, and this measuring circuit of another one Huitong also ensures that measurement apparatus
Can be properly functioning, improve stability；Certainly, also can this bridging of Liang Ge Huitong be connect in parallel or in series,
Improve the degree of accuracy measured.
As shown in Fig. 4 to Fig. 5, in the installation direction of described foil gauge 41 and described sensor elastomer 3
Mandrel is 45 degree of angles.By the best angle calculated, make measurement the most accurate；Certainly, not
In the environment of Tong, it is also possible to be other angle, to reach optimum measurement effect.
As shown in Figure 1 to Figure 2, the end face at described sensor elastomer 3 two ends flushes in described connector
Side, described sensor elastomer 3 is fixed on connector 2 by chuck 6, and described biography is located at by described chuck 6
The end face of sensor elastomer 3 both sides；As shown in Figure 4, described the axially arranged of sensor elastomer 1 has cloth
Wire casing 33, described wiring groove 33 connects the end face of described sensor elastomer 1, described sensor elastomer 1
End face install be provided with binding post 7；Wire one end connects described sensor, and by described wiring groove 33,
The other end connects described binding post 7.
The tooth bar loading demands used due to sea work hoistable platform is the hugest, and accordingly, sensor is elastic
The size of body 1 is just the biggest than the size of general frame for movement, under such circumstances at sensor elastomer 1
In offer wiring groove 33 and affect the precision of measurement hardly, can connect up cleverly again.
Described measurement apparatus is located at the end of described tooth bar 1；One end or the two ends of described tooth bar 1 are provided with institute
State measurement apparatus.In order to adapt to different working environments, described measurement apparatus can also be located at described tooth bar 1
Other positions.
As shown in Figure 1 to Figure 2, described connector 2 is installed on piston rod 5, described piston rod 5 by screw thread
It is positioned at the opposite side relative with described tooth bar 1；The other end of described piston rod 5 is installed on hydraulic cylinder.
Described in described Hydraulic Cylinder, tooth bar 1 works, and described tooth bar 1 drives described tooth bar, to reach sea work
The purpose of lifting platform.
As shown in Figure 1 to Figure 2, described connector 2 is provided with U-shaped structure, and described tooth bar 1 is installed on described U
In shape structure；Or described tooth bar 1 is provided with U-shaped structure, described connector 2 is installed on described U-shaped structure
In.
Described connector 2 is provided with U-shaped structure or described tooth bar 1 is provided with U-shaped structure, makes described tooth bar 1
With structure between described connector 2 is the most firm.
The know-why of the present invention is described above in association with specific embodiment.These describe and are intended merely to explain this
The principle of invention, and limiting the scope of the invention can not be construed to by any way.Based on herein
Explaining, those skilled in the art need not pay performing creative labour can associate other tool of the present invention
Body embodiment, within these modes fall within protection scope of the present invention.
Claims (9)
1. the bar load-measuring device connect based on this bridging of double Huitong, including tooth bar and measurement apparatus, its
It is characterised by: described measurement apparatus includes connector, sensor elastomer and sensor；
Described sensor elastomer is cylindrical structural, through and to be installed on described tooth bar corresponding with connector
Hole, make described tooth bar be installed on described connector；
Described sensor is installed on described sensor elastomer, is located at the right of described tooth bar and connector contact surface
Answer position, measure the stressing conditions between described tooth bar and connector；
Described sensor is double-shear foil gauge, and each described sensor is provided with two foil gauges, has two
Described sensor；
If totally four described foil gauges of tradition device are respectively R1, R2, R3 and R4 described in two of which, if
Described in another two, totally four described foil gauges of tradition device are respectively R5, R6, R7 and R8；
Described R1, R2, R3 and R4, and described R5, R6, R7 and R8 separately constitute this bridging of Huitong
Connect；Two these bridgings of described Huitong connect separate connection, in parallel or in series.
A kind of bar load-measuring device connect based on this bridging of double Huitong the most according to claim 1, its
Be characterised by: described sensor elastomer be radially provided with two cannelures, be located at tooth bar and contact with connector
The position in face, described sensor is installed in described cannelure.
A kind of bar load-measuring device connect based on this bridging of double Huitong the most according to claim 2, its
It is characterised by: described cannelure is provided with through hole, radially across the central shaft of described sensor elastomer；One
Two described sensors it are provided with in described through hole；The centre position of described through hole is located at by two described sensors
Inwall, and relative both sides.
A kind of bar load-measuring device connect based on this bridging of double Huitong the most according to claim 3, its
It is characterised by: described through hole is perpendicular to the Impact direction between described tooth bar and connector.
A kind of bar load-measuring device connect based on this bridging of double Huitong the most according to claim 1, its
It is characterised by: the installation direction of described foil gauge is 45 degree of angles with the central shaft of described sensor elastomer.
A kind of bar load-measuring device connect based on this bridging of double Huitong the most according to claim 3, its
It is characterised by: the end face at described sensor elastomer two ends flushes in the side of described connector, described sensing
Device elastomer is fixed on connector by chuck, and the end face of described sensor elastomer both sides is located at by described chuck；
The axially arranged of described sensor elastomer has wiring groove, and described wiring groove connects described sensor elastomer
End face, the end face of described sensor elastomer is installed and is provided with binding post；Wire one end connects described sensor,
And by described wiring groove, the other end connects described binding post.
A kind of bar load-measuring device connect based on this bridging of double Huitong the most according to claim 1, its
It is characterised by: described measurement apparatus is located at the end of described tooth bar；One end or the two ends of described tooth bar are provided with
Described measurement apparatus.
A kind of bar load-measuring device connect based on this bridging of double Huitong the most according to claim 7, its
Being characterised by: described connector is installed on piston rod by screw thread, described piston rod is positioned at and described tooth bar phase
To opposite side；The other end of described piston rod is installed on hydraulic cylinder.
A kind of bar load-measuring device connect based on this bridging of double Huitong the most according to claim 1, its
Being characterised by: described connector is provided with U-shaped structure, described tooth bar is installed in described U-shaped structure；Or
Described tooth bar is provided with U-shaped structure, and described connector is installed in described U-shaped structure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610419917.4A CN105865781A (en) | 2016-06-14 | 2016-06-14 | Strip load measuring device based on double-Wheatstone-bridge connection |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610419917.4A CN105865781A (en) | 2016-06-14 | 2016-06-14 | Strip load measuring device based on double-Wheatstone-bridge connection |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105865781A true CN105865781A (en) | 2016-08-17 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610419917.4A Pending CN105865781A (en) | 2016-06-14 | 2016-06-14 | Strip load measuring device based on double-Wheatstone-bridge connection |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2000075605A1 (en) * | 1999-06-03 | 2000-12-14 | R. Rouvari Oy | System for measuring loadings in a structure, measuring unit and measuring sensor |
| CN101509816A (en) * | 2009-03-30 | 2009-08-19 | 东南大学 | Force sensor and air measurement method thereof |
| CN104280237A (en) * | 2014-10-11 | 2015-01-14 | 西北工业大学 | Experiment device and method for measuring uniform load performance of power dividing gear system |
| CN105547868A (en) * | 2015-12-30 | 2016-05-04 | 中北大学 | Drop hammer structural design based on stress concentration principle and test method thereof |
-
2016
- 2016-06-14 CN CN201610419917.4A patent/CN105865781A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2000075605A1 (en) * | 1999-06-03 | 2000-12-14 | R. Rouvari Oy | System for measuring loadings in a structure, measuring unit and measuring sensor |
| CN101509816A (en) * | 2009-03-30 | 2009-08-19 | 东南大学 | Force sensor and air measurement method thereof |
| CN104280237A (en) * | 2014-10-11 | 2015-01-14 | 西北工业大学 | Experiment device and method for measuring uniform load performance of power dividing gear system |
| CN105547868A (en) * | 2015-12-30 | 2016-05-04 | 中北大学 | Drop hammer structural design based on stress concentration principle and test method thereof |
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Application publication date: 20160817 |