CN2255036Y - Mechanical strain gauge for lever - Google Patents
Mechanical strain gauge for lever Download PDFInfo
- Publication number
- CN2255036Y CN2255036Y CN 96211456 CN96211456U CN2255036Y CN 2255036 Y CN2255036 Y CN 2255036Y CN 96211456 CN96211456 CN 96211456 CN 96211456 U CN96211456 U CN 96211456U CN 2255036 Y CN2255036 Y CN 2255036Y
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- CN
- China
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- lever
- gauge
- holding frame
- plate
- following
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- Investigating Strength Of Materials By Application Of Mechanical Stress (AREA)
Abstract
The utility model relates to a mechanical strain gauge for levers, an upper and a lower clamping frames are arranged on a machine frame; the left end of the lower clamping frame is provided with a lower lever; a ball is arranged in a V-shaped slot at the middle of the lower lever; a V-shaped knife edge at the right end and two V-shaped slots at the lower end of a gauge length plate form rotary fulcra; one end contact of the lower lever supports the upper lever of which one end contacts the measuring head of a dial gauge; test samples clamped on the clamping frames are subjected to force to generate elongation and deformation, the dial gauge can read the reading of deformation. The utility model adopts that two-stage transmissivity is 1/10; resolution is 1/1000 mm or 0.1/1000 mm, and can be used for the stress test of the non proportion extension of elastic modulus E in colleges and universities and physical and chemical inspection industry.
Description
It is the metering outfit of feature that the utility model relates in to adopt mechanical means, is a kind of instrument that measures solid deformation.
Tens(i)ometer is the mechanical detection instrument of a kind of mensuration material (sample) elongation strain, and it is widely used in institution of higher education, technical secondary school's material mechanics experiment teaching and physical and chemical inspection industry and measures the elastic modulus of material, disproportional elongation stress etc.
In the background technology field, the mechanical type instrument that is used to measure the material elongation strain both at home and abroad has: (1) lever tens(i)ometer, adopt full lever to amplify, resolution is 1/1000mm, the problem that exists is that range is too little, only be applicable to and measure material in the distortion in elastic deformation stage, so sample installation specification height is seldom use at present; (2) two table tens(i)ometers adopt lever to transmit at 1: 1, are amplified by dial gauge or clock gauge, and resolution is 1/100mm or 1/1000mm, the axial average elongation when the energy test specimens is stretched.The problem that exists is that two tables often can not be experienced distortion synchronously, and physical dimension is big, requires long sample, and the physical and chemical inspection industry often can't be used because sampling is short, in addition, reads distortion owing to adopt two tables to measure, and uses inconvenient; (3) ball pivot tens(i)ometer, adopt lever to transmit at 1: 2, amplify by dial gauge or clock gauge, resolution is 1/200mm or 1/2000mm, the average axial deformation when the energy test specimens is stretched, and enlargement factor is higher, the problem that exists also is that structure is too big and the activity link is too many, inconvenience is installed, requires sample longer, be difficult to already promote the use of at the physics and chemistry check row.
The purpose of this utility model is: it adopts the lever tabular form tens(i)ometer of two-stage lever transmission, can solve the problem that exists in the background technology.
The technical solution adopted in the utility model is: it comprises frame, sample holder device, lever transmission mechanism, indicating gauge clamping device.Frame comprises the gauge stand plate, contiguous block, and the gauge length plate, gauge stand plate and gauge length plate are contained in the left and right side of contiguous block respectively.The sample holder device comprises holding frame, following holding frame, last holding frame is equipped with on the contiguous block with straight pin, and form with straight pin and to be rotatably assorted, the left end of following holding frame is equipped with down lever, in the V-shaped groove in the middle of it ball is housed, the two V-arrangement edges of a knife of its left end and two V-shaped grooves of gauge length plate lower end form rotating fulcrum.Lever transmission mechanism comprises lever down, upper lever, one end of upper lever is fixed on the gauge stand plate with straight pin, and form with straight pin and to be rotatably assorted, the other end contacts with the indicating gauge measuring head, following lever one end withstands on the upper lever by the contact, and the other end is contained in down on the holding frame, and following holding frame and following lever are located with supporting plate.The indicating gauge clamping device comprises the gauge stand that is contained on the gauge stand plate, and indicating gauge is housed on the gauge stand, and the measuring head of indicating gauge contacts with upper lever.Backstay also can be housed on contiguous block and backstay down is housed below supporting plate.
The utility model is compared with background technology, and the useful effect that is had is:
1. adopting two-stage lever transmission ratio is 1: 10, and adopting the dial gauge total magnification is 1000 times, and resolution is 1/1000mm, is 1000 times if adopt the clock gauge total magnification, and resolution is 0.1/1000mm;
2. can accurately measure disproportional elongation stress σ
P0.01: the technical very difficult realization in the past of the proportional limit of material or limit of elasticity, native land man standard has all been used instead and has been surveyed σ
P0.01Replace, promptly extend the 0.01% o'clock pairing stress that reaches the former gauge length of sample and be σ with disproportional
P0.01, press GB222-87 new national standard regulation, as surveying σ with circular short proportional test bar
P0.01The lattice number that then disproportional elongation is equivalent in the background technology the 2nd, 3 kind of tens(i)ometer shows is respectively 5 lattice and 10 lattice, and the utility model is indicated as changing clock gauge, and enlargement factor reaches 10000 times, the suitable lattice number of its disproportional elongation is 50 lattice, so measuring accuracy improves greatly;
3. physical dimension is little, than in the background technology the 2nd, 3 kind of tens(i)ometer be little by 1/3～1/4, thereby tested sample length can shorten 30%, saves the sampling material;
4. sample can be put into the location-plate location from the right side of two holding frames, and clamps sample, and is easy for installation.
Therefore, it can make the elastic modulus E of material, disproportional elongation stress σ in institution of higher education, technical secondary school and physical and chemical inspection industry
P0.01, σ
P0.05And σ
P0.2The usefulness of test.
Below in conjunction with accompanying drawing, the utility model is described in detail.
Fig. 1, front view of the present utility model;
Fig. 2, vertical view of the present utility model;
Fig. 3, right view of the present utility model;
Fig. 4, A-A cut-open view of the present utility model;
The front view of Fig. 5, following holding frame and the assembling of following lever;
The vertical view of Fig. 6, following holding frame and the assembling of following lever.
As Fig. 1, Fig. 2, Fig. 8, shown in Figure 4, frame is by gauge stand plate 2, and contiguous block 3, gauge length plate 7 usefulness screws fuse and form the gate-type combined rack.Gauge stand 17 is housed, in order to distortion indicating gauge 1 (dial gauge or clock gauge) to be installed on the gauge stand plate 2.The sample holder device is made up of last holding frame 6 (U-shaped frame) and following holding frame 9 (U-shaped frame), and last holding frame is connected on the contiguous block 3 by straight pin 5, and it can freely rotate around straight pin; Figure as 5, shown in Figure 6, the left end of following holding frame 9 is equipped with down lever 14, in the V-shaped groove in the middle of it ball 12 is housed, with the pressing plate 10 that is contained on the gauge length plate 7 ball 12 is located, two V-arrangement edge of a knife A, the B of its right-hand member (angle is 60 ° ± 1 °) forms rotating fulcrum with two V-shaped grooves of gauge length plate 7 lower ends, can rotate up and down around fulcrum after following holding frame 9 and following lever 14 are linked to be integral body, each having two top screws 19 on the upper and lower holding frame 6,9 is check nut in order to clamping tensile sample 8,18.Backstay 4 is housed on contiguous block 3 simultaneously, backstay 11 is housed down below the supporting plate 13, in order to locate sample 8.One end of the upper lever 16 in the lever transmission mechanism is fixed on the gauge stand plate 2 with straight pin, and form with straight pin and to be rotatably assorted, the other end contacts with the measuring head of indicating gauge 1, following lever 14 1 ends withstand on the mid point of upper lever 16 by the contact, the other end is contained in down on the holding frame 9, following holding frame 9 and following lever 14 usefulness supporting plates 13 location.
When the stressed generation elongation strain of sample 8, following holding frame 9 rotates around the V-arrangement fulcrum, drive lever clockwise direction rotation down, and its top upper lever 16 mid points that withstand on, thereby promote the straight pin of upper lever 16 on gauge stand plate 3 and do equidirectional (clockwise direction) rotation, and make by the top cap of set screw 15 that the indicating gauge sounding rod is flexible to move up and down, in order to regulate initial reading, indicate distortion reading after the amplification of tensile sample in gauge length (measurement length) by indicating gauge again, the total magnification of the indication lattice number of indicating gauge, be tensile sample absolute elongation in the gauge length length in loading process divided by indicating gauge.
Claims (2)
1. lever tabular form tens(i)ometer, it comprises frame, the sample holder device, lever transmission mechanism, the indicating gauge clamping device is characterized in that:
1) frame: comprise gauge stand plate [2], contiguous block [3], gauge length plate [7], gauge stand plate [2] and gauge length plate [7] are contained in the left and right side of contiguous block [3] respectively;
2) sample holder device: comprise holding frame [6], following holding frame [9], last holding frame [6] is contained on the contiguous block [3] with straight pin [5], and form with straight pin [5] and to be rotatably assorted, the left end of following holding frame [9] is equipped with down lever [14], in the V-shaped groove in the middle of it ball [12] is housed, two V-arrangement edge of a knife A, the B of its right-hand member and two V-shaped grooves of gauge length plate [7] lower end form rotating fulcrum;
3) lever transmission mechanism: comprise lever [14] down, upper lever [16], one end of upper lever [16] is fixed on the gauge stand plate [2] with straight pin, and form with straight pin and to be rotatably assorted, the other end contacts with the measuring head of indicating gauge [1], following lever [14] one ends withstand on the upper lever [16] by the contact, and the other end is contained in down on the holding frame [9], and following holding frame [9] and following lever [14] are located with supporting plate [13];
4) indicating gauge clamping device: comprise the gauge stand [17] that is contained on the gauge stand plate [2], indicating gauge [1] is housed on the gauge stand [17], the measuring head of indicating gauge [1] contacts with upper lever [16].
2. lever tabular form tens(i)ometer according to claim 1 is characterized in that: backstay [4] is housed on contiguous block [3], backstay [11] down is housed below supporting plate [13].
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 96211456 CN2255036Y (en) | 1996-05-24 | 1996-05-24 | Mechanical strain gauge for lever |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 96211456 CN2255036Y (en) | 1996-05-24 | 1996-05-24 | Mechanical strain gauge for lever |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2255036Y true CN2255036Y (en) | 1997-05-28 |
Family
ID=33894383
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 96211456 Expired - Fee Related CN2255036Y (en) | 1996-05-24 | 1996-05-24 | Mechanical strain gauge for lever |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2255036Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102401622A (en) * | 2010-09-17 | 2012-04-04 | 深圳富泰宏精密工业有限公司 | Measuring equipment |
| CN112113842A (en) * | 2020-09-22 | 2020-12-22 | 中国航发湖南动力机械研究所 | Data measuring device and data measuring method for plane double-shaft test |
-
1996
- 1996-05-24 CN CN 96211456 patent/CN2255036Y/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102401622A (en) * | 2010-09-17 | 2012-04-04 | 深圳富泰宏精密工业有限公司 | Measuring equipment |
| CN112113842A (en) * | 2020-09-22 | 2020-12-22 | 中国航发湖南动力机械研究所 | Data measuring device and data measuring method for plane double-shaft test |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |