CN204422343U - A kind of digital display device for measuring deformed bar stretching extension value - Google Patents
A kind of digital display device for measuring deformed bar stretching extension value Download PDFInfo
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- CN204422343U CN204422343U CN201520094910.0U CN201520094910U CN204422343U CN 204422343 U CN204422343 U CN 204422343U CN 201520094910 U CN201520094910 U CN 201520094910U CN 204422343 U CN204422343 U CN 204422343U
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Abstract
The utility model provides a kind of digital display device for measuring deformed bar stretching extension value, belongs to technical field of bridge engineering.The utility model comprises: hydraulic jack, described hydraulic jack comprises hydraulic jack cylinder body, the piston rod of hydraulic jack be slidably connected with hydraulic jack cylinder body, also comprise: digital display module and linear pattern capacitor grid transducer, described linear pattern capacitor grid transducer comprises: comprise the moving grid of the first bar shaped electrode group and comprise the fixed grid of the second bar shaped electrode group; Described fixed grid has cutting ferrule, and one end of described moving grid is connected with described digital display module side, and the other end is connected with described fixed grid through described cutting ferrule, and described digital display module is fixedly connected on described hydraulic jack outer wall of cylinder block; Described fixed grid is connected to described piston rod of hydraulic jack end face.By the capacitor grid transducer of the fixed grid that arranges in hydraulic jack and moving grid composition, the numerical value of elongation can be determined accurately, and numerical monitor, reduce the consumption of manpower.
Description
Technical field
The utility model belongs to technical field of bridge engineering, particularly relates to a kind of digital display device for measuring deformed bar stretching extension value.
Background technology
" highway bridge and culvert construction technique normalizing " (JTG/T F50-2011) regulation " when presstressed reinforcing steel adopts stress control method stretch-draw; should check with stretch value; the difference of actual elongation value and theoretic elongation should meet designing requirement; when designing no standard; the difference of actual elongation value and theoretic elongation should control within 6%; otherwise should suspend stretch-draw, after ascertaining the reason and take measures to be adjusted, can continue stretch-draw." therefore, to take multiple measurements its elongation in deformed bar stretching process, at present mainly to adopt manually by the method that steel ruler is measured, cause efficiency low, be affected by human factors large, the shortcomings such as particularly prestress short bundle elongation relative error is larger.
Utility model content
In view of this, the utility model aims to provide a kind of digital display device for measuring deformed bar stretching extension value, causes measurement inaccurate, use poor, the inefficient problem of measuring accuracy that steel ruler angle has deviation to bring to solve by human factor.
The utility model discloses a kind of digital display device for measuring deformed bar stretching extension value, belonging to technical field of bridge engineering.The utility model comprises: hydraulic jack, described hydraulic jack comprises hydraulic jack cylinder body, piston rod of hydraulic jack, also comprise: digital display module and linear pattern capacitor grid transducer, described linear pattern capacitor grid transducer comprises: comprise the moving grid of the first bar shaped electrode group and comprise the fixed grid of the second bar shaped electrode group; Described fixed grid has cutting ferrule, and one end of described moving grid is connected with described digital display module side, and the other end is connected with described fixed grid through described cutting ferrule, and described digital display module is fixedly connected on described hydraulic jack outer wall of cylinder block; Described fixed grid is connected to described piston rod of hydraulic jack end face.
By the capacitor grid transducer of the fixed grid that arranges in hydraulic jack and moving grid composition, the numerical value of elongation can be determined accurately, and numerical monitor, convenient and swift, reduce the consumption of manpower.
Accompanying drawing explanation
Fig. 1 is the structural representation of the utility model embodiment;
Fig. 2 is the structural representation that the utility model embodiment is overlooked;
Fig. 3 is moving grid and fixed grid annexation schematic diagram in the utility model embodiment;
Fig. 4 is the schematic diagram of piston rod of hydraulic jack (hollow piston rod) in the utility model embodiment;
Fig. 5 is the A-A transverse sectional view of Fig. 4;
Fig. 6 is fixed grid fixture block structure front elevation in the utility model embodiment.
In figure, 1 is fixed grid; 2 is moving grid; 3 is digital display module; 4 is piston rod of hydraulic jack; 5 is hydraulic jack cylinder body; 6 is the first screw; 7 is cutting ferrule; 8 is the first bar shaped electrode group; 9 is the second bar shaped electrode group; 10 is the second screw; 11 is trapezoidal fixture block; 12 is the 3rd screw.
Embodiment
The following description and drawings illustrate specific embodiments of the present utility model fully, put into practice them to enable those skilled in the art.
Below with reference to the accompanying drawings and in conjunction with the preferred embodiments, the utility model is described in detail.
As shown in Figure 1, a kind of digital display device for measuring deformed bar stretching extension value, comprise: hydraulic jack, described hydraulic jack comprises hydraulic jack cylinder body 5, piston rod of hydraulic jack 4, also comprises: the linear pattern capacitor grid transducer that digital display module 3 and the moving grid 2 comprising the first bar shaped electrode group 9 form with the fixed grid 1 comprising the second bar shaped electrode group 8.
Fixed grid 1 has cutting ferrule 7, and one end of moving grid 2 is connected with the side of digital display module 3, and the other end is connected with fixed grid 1 through cutting ferrule 7, and described digital display module 3 is fixedly connected on described hydraulic jack cylinder body 5 outer wall;
Described fixed grid 1 is connected to described piston rod of hydraulic jack 4 end face.
In some illustrative embodiment, as shown in Figure 2, the surrounding of digital display module 3 has round hole, and the first screw 6 is connected with vertical first screw at hydraulic jack cylinder body 5 top through described round hole and digital display module 3 is fixedly connected on hydraulic jack cylinder body 5 outer wall.
In some illustrative embodiment, as shown in Figure 3, fixed grid 1 has the first bar shaped electrode group 8 and cutting ferrule 7, and moving grid 2 has the second bar shaped electrode group 9.Described moving grid 2 passes perpendicularly through described cutting ferrule 7 and is connected with described fixed grid 1, and described moving grid 2 can slide in described cutting ferrule 7 simultaneously.First bar shaped electrode group 8 and the second bar shaped electrode group 9 corresponding, there is before both the gap of suitable distance, when the fixed grid 1 be connected on piston rod of hydraulic jack 4 moves along with piston rod of hydraulic jack 4 and moves, change in displacement is produced between first bar shaped electrode group 8 and the second bar shaped electrode group 9, and producing electrostatic coupling, the concrete numerical value that can calculate change in displacement accurately according to electrostatic coupling completes the measurement of hydraulic jack elongation.
Wherein, described piston rod of hydraulic jack 4 can be hollow piston rod or solid piston bar, and Fig. 4 is for hollow piston rod.
In some illustrative embodiment, as shown in Figure 4 and Figure 5, the end face of described piston rod of hydraulic jack 4 end is provided with the dovetail groove connecting fixed grid 1.As shown in Figure 5, described fixed grid 1 has trapezoidal fixture block 11, coordinates be connected with described dove tail shape.
In some illustrative embodiment, as shown in Figure 5, described trapezoidal fixture block 11 has the second screw run through, and is fixed the trapezoidal fixture block 11 of the described fixed grid 1 in described dovetail groove by the second screw 10 be connected with described second screw.
In some illustrative embodiment, as shown in Figure 6, described trapezoidal fixture block 11 has the 3rd screw run through, and is fixedly connected with described fixed grid 1 and described trapezoidal fixture block 11 by the 3rd screw 12 be connected with described 3rd screw.
Digital display device of the present utility model, make use of the capacitor grid transducer be connected in hydraulic jack, drive fixed grid and moving grid to produce electrostatic coupling when being extended by piston rod of hydraulic jack and measure elongation, this measuring method measuring accuracy is high, need by instrument, more laborsaving.
The foregoing is only preferred embodiment of the present utility model, be not limited to the utility model, for a person skilled in the art, the utility model can have various modifications and variations.Anyway, within spirit of the present utility model and principle, any amendment done, equivalent replacement, improvement etc., all should be included within protection domain of the present utility model.
Claims (7)
1. one kind for measuring the digital display device of deformed bar stretching extension value, comprise hydraulic jack, described hydraulic jack comprises: hydraulic jack cylinder body, the piston rod of hydraulic jack be slidably connected with described hydraulic jack cylinder body, it is characterized in that, also comprise:
Digital display module and linear pattern capacitor grid transducer, described linear pattern capacitor grid transducer comprises: comprise the moving grid of the first bar shaped electrode group and comprise the fixed grid of the second bar shaped electrode group;
Described fixed grid has cutting ferrule, and one end of described moving grid is connected with described digital display module side, and the other end is connected with described fixed grid through described cutting ferrule, and described digital display module is fixedly connected on described hydraulic jack outer wall of cylinder block;
Described fixed grid is connected to described piston rod of hydraulic jack end face.
2. according to the digital display device for measuring deformed bar stretching extension value described in claim 1, it is characterized in that, described moving grid parallels with the bearing of trend of described piston rod of hydraulic jack, described moving grid vertically snaps in described cutting ferrule, has induction gap between described fixed grid and described moving grid.
3. according to the digital display device for measuring deformed bar stretching extension value described in claim 1, it is characterized in that, described hydraulic jack cylinder body has the first screw of vertical open pores, bottom described digital display module, surrounding has round hole, be connected through the first screw of described round hole and described first screw, described digital display module and described hydraulic jack cylinder body are fixedly connected.
4. according to the digital display device for measuring deformed bar stretching extension value described in claim 1, it is characterized in that, the end face of described piston rod of hydraulic jack end is provided with the dovetail groove connecting described fixed grid.
5. according to the digital display device for measuring deformed bar stretching extension value described in claim 4, it is characterized in that, described fixed grid has the trapezoidal fixture block of strip, and matching to hold with described dovetail groove is connected.
6. according to the digital display device for measuring deformed bar stretching extension value described in claim 5, it is characterized in that, described trapezoidal fixture block offers the second screw run through, and fixes described trapezoidal fixture block by the second screw be connected with described second screw.
7. according to the digital display device for measuring deformed bar stretching extension value described in claim 6, it is characterized in that, described trapezoidal fixture block offers vertical groove, described fixed grid is bar shaped, vertically be arranged in described groove, by the 3rd screw that runs through described vertical groove and the 3rd screw matched, fixing described fixed grid.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520094910.0U CN204422343U (en) | 2015-02-10 | 2015-02-10 | A kind of digital display device for measuring deformed bar stretching extension value |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520094910.0U CN204422343U (en) | 2015-02-10 | 2015-02-10 | A kind of digital display device for measuring deformed bar stretching extension value |
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| CN204422343U true CN204422343U (en) | 2015-06-24 |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108535363A (en) * | 2018-02-09 | 2018-09-14 | 中国科学院声学研究所 | A kind of sample clamp for the sound absorption test of acoustic impedance pipe |
| CN111351457A (en) * | 2020-02-21 | 2020-06-30 | 国家电网有限公司 | Method and device for measuring residual elongation of top cover bolt of pumped storage unit |
| CN111386455A (en) * | 2018-10-29 | 2020-07-07 | 株式会社岛津制作所 | Material testing machine |
-
2015
- 2015-02-10 CN CN201520094910.0U patent/CN204422343U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108535363A (en) * | 2018-02-09 | 2018-09-14 | 中国科学院声学研究所 | A kind of sample clamp for the sound absorption test of acoustic impedance pipe |
| CN111386455A (en) * | 2018-10-29 | 2020-07-07 | 株式会社岛津制作所 | Material testing machine |
| CN111386455B (en) * | 2018-10-29 | 2024-03-26 | 株式会社岛津制作所 | Material testing machine |
| CN111351457A (en) * | 2020-02-21 | 2020-06-30 | 国家电网有限公司 | Method and device for measuring residual elongation of top cover bolt of pumped storage unit |
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