CN202304788U - Device for measuring prestress tension elongation - Google Patents
Device for measuring prestress tension elongation Download PDFInfo
- Publication number
- CN202304788U CN202304788U CN2011204024666U CN201120402466U CN202304788U CN 202304788 U CN202304788 U CN 202304788U CN 2011204024666 U CN2011204024666 U CN 2011204024666U CN 201120402466 U CN201120402466 U CN 201120402466U CN 202304788 U CN202304788 U CN 202304788U
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- Prior art keywords
- lifting jack
- sensor
- inner casing
- jack
- inner cylinder
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Abstract
The utility model relates to a device for measuring the wireless prestress tension elongation, which comprises a jack, a sensor unit and a traction component, wherein the jack comprises an outer cylinder and an inner cylinder, a plurality of prestress ribs penetrate through the inner cylinder along the axial direction and are fixedly connected with the end part of the inner cylinder, the sensor unit is fixedly connected onto the outer cylinder of the jack and comprises a case, a singlechip microcomputer, a displacement sensor, an angle sensor, a display module, a battery module and a wireless communication module are arranged in the case, the displacement sensor, the angle sensor, the display module, the battery module and the wireless communication module are electrically connected with the singlechip microcomputer, the traction component is fixedly connected onto the inner cylinder of the jack, an ejector pin is arranged on the traction component and is connected with the displacement sensor and the angle sensor through a pull rope, and in addition, the pull rope is maintained to be axially parallel to the inner cylinder of the jack. The device for measuring the wireless prestress tension elongation has the advantages that the design is reasonable, the structure is simple, the mounting and the dismounting are convenient, the size of the sensor can be smaller through the reasonable sensor type selection, and the device for measuring the wireless prestress tension elongation is suitable for the precise measurement of the tension elongation of civil engineering prestress components.
Description
Technical field
The utility model relates to a kind of stretching extension measuring device, and particularly a kind of wireless stretching extension measuring device that is applicable to the civil engineering work prestressed component belongs to technical field of automation.
Background technology
Prestressed concrete member is the primary structure form of present road and bridge construction.Present stage, prestressing force method construction method basically all is to adopt manually operated mode at home.The site operation personnel is in stretching process; Usually the stretching force and the stretching extension amount of three nodes of record stretch-draw initial stress point 1 (be generally 10～15% design stretching force), stretch-draw initial stress point 2 (being generally the some twice of 1 initial stress), complete stretch-draw point; If the stretching extension amount does not exceed the allowable value of pre-stress rib stretching force theoretical elongation, think that then stretch-draw is normal.The metering system of current stretching extension amount is most through instruments such as steel rulers, though this mode simple, intuitive be prone to the doping human factor, and this mode has hindered the informationization of stretching process.In the prior art, the patent No. is ZL03111812.7, and patent name is the patent of invention of " full-automatic pre-stress stretching device ", proposes to adopt the control assembly of lifting jack, oil pump power, sensor element, displacement transducer and tensioning equipment; The sensor that this invention is adopted all adopts electrical connection, and has increased force transducer and detect the control as stretching force, and this mode is not too suitable at precast beam or crane span structure scene at present, and beam spare peripheral element and tensioning equipment mobile is easy to destroy connecting line; The lifting jack pump housing is often carried, is collided with, and can't guarantee that fixed displacement transducer is not destroyed.The patent No. is ZL01129163.X; Patent name is the patent of invention of " integrated autocontrol tester for prestressed stretch-draw anchor "; Proposed the transmission of displacement transducer signal electric weight, in structural drawing, provided displacement transducer in the form of piston, be installed in the lifting jack outer wall through affixed mode; Such affixed mode is damaged displacement transducer because of colliding with easily, causes the actual effect of subsequent control; Adopt the piston type displacement transducer in addition, can't reduce the volume of displacement transducer.
Summary of the invention
The purpose of the utility model is to provide a kind of wireless Prestressed Stretching Elongation measurement mechanism, can accurately measure the stretching extension amount of civil engineering work prestressed component.
For solving the problems of the technologies described above; The utility model discloses a kind of wireless Prestressed Stretching Elongation measurement mechanism; Comprise: a lifting jack, said lifting jack comprise an outer shell and an inner casing, and a plurality of presstressed reinforcing steels run through said inner casing vertically and are fixed in the end of said inner casing; One sensor unit is fixed on the outer shell of said lifting jack, and said sensor unit comprises a shell; The displacement transducer that in said shell, is provided with a single-chip microcomputer and is electrically connected on said single-chip microcomputer; Angular transducer, display module, battery module and wireless communication module; One traction element is consolidated on the inner casing of said lifting jack, and said traction element is provided with a thimble, and said thimble connects said displacement transducer and angular transducer through a stay cord, and the inner casing of said stay cord and said lifting jack keeps axially parallel.
The utility model is reasonable in design, and is simple in structure, easy to loading and unloading, and can make the sensor volume less through rational sensor type selecting, is applicable to the accurate measurement of civil engineering work stretching prestressed component elongation.
The further improvement of the utility model is that the inner casing end of said lifting jack is combined with an anchor slab, and said presstressed reinforcing steel is fixed on the said anchor slab through intermediate plate.Come affixed presstressed reinforcing steel through anchor slab, can prevent effectively that presstressed reinforcing steel from producing slip in drawing process, and can make the presstressed reinforcing steel dismounting more convenient.
The further improvement of the utility model is that said sensor unit is adsorbed in the outer shell of said lifting jack through a magnetic force gauge stand; Said traction element is adsorbed in the inner casing of said lifting jack through a magnetic force gauge stand.Sensor unit and traction element are adsorbed on the lifting jack through the magnetic force table, can make sensor unit and traction element dismounting more convenient, and sensor unit and traction element are applicable on the lifting jack of multiple pattern.
Description of drawings
Fig. 1 is that the wireless Prestressed Stretching Elongation measurement mechanism of the utility model uses arrangenent diagram;
Fig. 2 is the structure diagram of traction element;
Fig. 3 is the vertical view of sensor unit;
Fig. 4 is the structural representation of A-A section among Fig. 3;
Fig. 5 is the sensor unit control module figure of the utility model.
Embodiment
Below in conjunction with accompanying drawing the utility model is done further description.
Like Fig. 1, Fig. 2, Fig. 3 and shown in Figure 4; This device comprises lifting jack outer shell 1, lifting jack inner casing 2, anchor slab 3, intermediate plate 4 and presstressed reinforcing steel 5; Sensor element 6, single-chip microcomputer 7, draw-wire displacement sensor 8, angular transducer 9, lithium battery 10, Liquid Crystal Module 11, sensor element magnetic force gauge stand 12, sensor draw ring 13, sensor stay cord 14, traction element 15, traction element thimble 16 and traction element magnetic force gauge stand 17; Liquid Crystal Module 11 and sensor element magnetic force gauge stand 12 are installed in the surface of sensor element 6; Traction element magnetic force gauge stand 17 is installed in the surface of traction element 15; Traction element 15 is connected with traction element thimble 16, and single-chip microcomputer 7, draw-wire displacement sensor 8, angular transducer 9 and lithium battery 10 are installed in the inside of sensor element 6.Because lifting jack is a hydraulic mechanism, along with the axial translation of lifting jack inner casing 2, lifting jack inner casing 2 self has certain rotation; Therefore angular transducer 9 has been installed specially in sensor element 6, has been used for measuring the anglec of rotation of lifting jack inner casing 2 in stretching process.In the Unit Installation process, at first make presstressed reinforcing steel 5 pass lifting jack inner casing 2, be fixed on presstressed reinforcing steel 5 on the instrument anchor slab 3 through instrument intermediate plate 4; Then be adsorbed on sensor element 6 on the lifting jack outer shell 1, be adsorbed on traction element 15 on the lifting jack inner casing 2 through traction element magnetic force gauge stand 17 through sensor element magnetic force gauge stand 12; Be enclosed within sensor draw ring 13 on the traction element thimble 16 at last, and make the stretching axially parallel of sensor stay cord 14 and lifting jack inner casing 2.
Cooperate shown in Figure 5, after this device installs, opening power, single-chip microcomputer 7 is accomplished communication and is connected promptly through the upper control machine around the wireless module search, and sends " sensor is ready " status word.In stretching process; Along with moving of lifting jack inner casing 2 and anchor slab 3; Traction element thimble 16 drives stay cord 14 and then triggers displacement sensor 8 and angular transducer 9; Displacement transducer 8 will feed back to sensor master control borad 7 with the displacement information of stay cord 14 and the rotation angle information of lifting jack inner casing 2 through the mode of pulse or aanalogvoltage with angular transducer 9; Then single-chip microcomputer sensor master control borad 7 obtains the initial value of presstressed reinforcing steel 5 stretching extension amounts according to the displacement information of stay cord 14, and according to the rotation angle information of lifting jack inner casing 2 initial value is revised, and obtains the exact value of presstressed reinforcing steel 5 stretching extension amounts; Last sensor master control borad 7 passes through the exact value digitizing of the mode of counting or A/D conversion with presstressed reinforcing steel 5 stretching extension amounts, and is sent to upper control machine through wireless module.
Wireless Prestressed Stretching Elongation measurement mechanism provides zero clearing simultaneously, owes electric prompt facility, and the single charge stream time surpasses 100 hours at present, has characteristics easy to use.
Present embodiment provided detailed embodiment and concrete operating process, but the protection domain of the utility model is not limited to following embodiment being to implement under the prerequisite with the utility model technical scheme.
Claims (4)
1. device that is used to measure Prestressed Stretching Elongation is characterized in that comprising:
One lifting jack, said lifting jack comprise an outer shell and an inner casing, and a plurality of presstressed reinforcing steels run through said inner casing vertically and are fixed in the end of said inner casing;
One sensor unit is fixed on the outer shell of said lifting jack, and said sensor unit comprises a shell; The displacement transducer that in said shell, is provided with a single-chip microcomputer and is electrically connected on said single-chip microcomputer; Angular transducer, display module, battery module and wireless communication module;
One traction element is consolidated on the inner casing of said lifting jack, and said traction element is provided with a thimble, and said thimble connects said displacement transducer and angular transducer through a stay cord, and the inner casing of said stay cord and said lifting jack keeps axially parallel.
2. device as claimed in claim 1 is characterized in that the inner casing end of said lifting jack is combined with an anchor slab, and said presstressed reinforcing steel is fixed on the said anchor slab through intermediate plate.
3. device as claimed in claim 2 is characterized in that said sensor unit is adsorbed in the outer shell of said lifting jack through a magnetic force gauge stand.
4. like each described device in the claim 1～3, it is characterized in that said traction element is adsorbed in the inner casing of said lifting jack through a magnetic force gauge stand.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011204024666U CN202304788U (en) | 2011-10-20 | 2011-10-20 | Device for measuring prestress tension elongation |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011204024666U CN202304788U (en) | 2011-10-20 | 2011-10-20 | Device for measuring prestress tension elongation |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202304788U true CN202304788U (en) | 2012-07-04 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011204024666U Expired - Fee Related CN202304788U (en) | 2011-10-20 | 2011-10-20 | Device for measuring prestress tension elongation |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202304788U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102853735A (en) * | 2012-08-29 | 2013-01-02 | 中铁十局集团有限公司 | Clamping sheet exposing value measuring device of front clamping type jack |
| CN103063174A (en) * | 2011-10-20 | 2013-04-24 | 上海力远计算机科技有限公司 | Wireless prestress tensile elongation measuring device |
| CN113700700A (en) * | 2021-08-27 | 2021-11-26 | 四川交达预应力工程检测科技有限公司 | Device and method for measuring displacement of piston cylinder of prestress jack |
-
2011
- 2011-10-20 CN CN2011204024666U patent/CN202304788U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103063174A (en) * | 2011-10-20 | 2013-04-24 | 上海力远计算机科技有限公司 | Wireless prestress tensile elongation measuring device |
| CN102853735A (en) * | 2012-08-29 | 2013-01-02 | 中铁十局集团有限公司 | Clamping sheet exposing value measuring device of front clamping type jack |
| CN102853735B (en) * | 2012-08-29 | 2015-04-01 | 中铁十局集团有限公司 | Clamping sheet exposing value measuring device of front clamping type jack |
| CN113700700A (en) * | 2021-08-27 | 2021-11-26 | 四川交达预应力工程检测科技有限公司 | Device and method for measuring displacement of piston cylinder of prestress jack |
| CN113700700B (en) * | 2021-08-27 | 2024-04-05 | 四川交达预应力工程检测科技有限公司 | Device and method for measuring displacement of piston cylinder of prestressing jack |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20120704 Termination date: 20121020 |