CN211318011U

CN211318011U - Scale distance adjustable stretching and pressing extensometer

Info

Publication number: CN211318011U
Application number: CN201922453052.5U
Authority: CN
Inventors: 宾远红; 许文胜; 宋珊珊
Original assignee: Guangdong Torch Testing Co ltd
Current assignee: Guangdong Torch Testing Co ltd
Priority date: 2019-12-31
Filing date: 2019-12-31
Publication date: 2020-08-21
Anticipated expiration: 2029-12-31

Abstract

The utility model discloses a scale distance adjustable is tensile, to extensometer, electron extensometer one side and first stay tube fixed connection, and first stay tube becomes the quadrature with first cantilever beam and is connected, and first cantilever beam tip is equipped with down location sword and first foil gage, and first foil gage is connected with the electron extensometer, the activity of second stay bar cup joints at first stay tube, through set screw location, and second stay bar becomes the quadrature with the second cantilever beam and is connected, and second cantilever beam tip is equipped with and fixes a position sword and second foil gage, and the second foil gage is connected with the electron extensometer; the utility model provides a gauge length adjustable is tensile, to the extensometer, and it has avoided two cutting edge contacts to skid through portable anchor clamps, when pressing from both sides tight easy operation, and the gauge length is adjustable, has increased the application range of extensometer.

Description

Scale distance adjustable stretching and pressing extensometer

Technical Field

The utility model relates to a measure utensil equipment technical field, in particular to scale distance adjustable is tensile, to extensometer.

Background

The extensometer is an important common measuring tool for mechanical detection of metal materials, and is indispensable for accurately measuring tensile strain or compressive strain of materials in tensile test and compressive test. In daily detection, two end blade contacts of the extensometer need to be tightly clamped with a test sample, a common method is to use a rubber band or a small spring hook to respectively wind and clamp an upper blade contact and a lower blade contact, and the main defects are as follows: firstly, the operation is troublesome, one hand is needed to hold the extensometer, and the other hand is needed to wind a rubber band or a small spring hook; secondly, the rubber band is easy to slip, the force of the rubber band and the small spring hook is small, the friction force between the rubber band and the sample is small, the rubber band is very easy to slip, and the test is invalid; and the scale distance of the extensometer is fixed, so that the extensometer has a single use range.

Disclosure of Invention

To the problem that exists among the background art, the utility model provides a scale distance adjustable is tensile, press to the extensometer, and it has avoided two cutting edge contacts to skid through portable anchor clamps, and easy operation when pressing from both sides tightly, and the scale distance is adjustable, has increased the application range of extensometer.

In order to achieve the above purpose, the utility model is realized by the following technical scheme: the scale distance adjustable stretching and pressing extensometer comprises an electronic extensometer, a first supporting pipe, a first cantilever beam, a second supporting rod and a second cantilever beam, wherein one side of the electronic extensometer is fixedly connected with the first supporting pipe, the first supporting pipe is orthogonally connected with the first cantilever beam, the end part of the first cantilever beam is provided with a lower positioning knife and a first strain gauge, the first strain gauge is connected with the electronic extensometer, the second supporting rod is movably sleeved on the first supporting pipe and positioned by a positioning screw, the second supporting rod is orthogonally connected with the second cantilever beam, the end part of the second cantilever beam is provided with an upper positioning knife and a second strain gauge, and the second strain gauge is connected with the electronic extensometer; install the connecting pipe on the side of first cantilever beam and second cantilever beam, movable mounting has the connecting rod in the connecting pipe, and splint are installed to connecting rod one end, are equipped with a supporting bench on the lateral wall of connecting pipe, and the screw thread has connect the screw rod soon on the supporting bench, and screw rod one end is connected with the connecting rod.

Preferably, the clamping plate is provided with a latch.

Preferably, the electronic extensometer is installed on the telescopic link, and the telescopic link lower extreme is installed on the magnetism supporting seat.

The utility model has the advantages that:

the utility model provides a gauge length adjustable is tensile, to the extensometer, and it has avoided two cutting edge contacts to skid through portable anchor clamps, and easy operation when pressing from both sides tightly, and the gauge length is adjustable, has increased the application range of extensometer.

Drawings

Fig. 1 is a front view of the present invention;

fig. 2 is a top view of the clamp of the present invention;

in the figure, 1-electronic extensometer, 2-first supporting tube, 3-first cantilever beam, 4-second supporting rod, 5-second cantilever beam, 6-lower positioning knife, 7-first strain gauge, 8-positioning screw, 9-second strain gauge, 10-connecting tube, 11-connecting rod, 12-clamping plate, 13-supporting table, 14-screw rod, 15-latch, 16-telescopic rod, 17-magnetic supporting seat, 18-upper positioning knife and 19-sample.

Detailed Description

In order to make the objects, technical solutions and technical effects of the present invention clearer, the following will explain in detail the advantageous embodiments of the present invention with reference to the accompanying drawings, so as to facilitate the understanding of the skilled person.

As shown in fig. 1-2, the scale distance adjustable stretching and pressing extensometer comprises an electronic extensometer 1, a first supporting tube 2, a first cantilever beam 3, a second supporting rod 4 and a second cantilever beam 5, wherein one side of the electronic extensometer 1 is fixedly connected with the first supporting tube 2, the first supporting tube 2 is orthogonally connected with the first cantilever beam 3, the end part of the first cantilever beam 3 is provided with a lower positioning knife 6 and a first strain gauge 7, the lower positioning knife and the first strain gauge 7 are connected with the electronic extensometer 1 through the first strain gauge 7, a sample 19 axially extends under the action of a tensile testing machine, two blade contacts of the electronic extensometer 1 are contacted with the sample 19 to sense the extension of the sample 19 in the interval between the two blade contacts, the first strain gauge 7 generates strain, the first strain gauge 7 converts the resistance variation into a resistance variation, the voltage signal is converted by a measuring and amplifying circuit to display a test record, the second supporting rod 4 is movably sleeved on the first supporting tube 2, the adjustable gauge length of the extensometer is realized by positioning through a positioning screw 8, a second supporting rod 4 is orthogonally connected with a second cantilever beam 5, the end part of the second cantilever beam 5 is provided with an upper positioning knife 18 and a second strain gauge 9, the second strain gauge 9 is connected with an electronic extensometer 1, a sample 19 axially extends under the action of a tensile testing machine, two blade contacts of the electronic extensometer 1 are contacted with the sample 19 to sense the extension of the sample 19 in the space between the two blade contacts, strain is generated through the second strain gauge 9, the second strain gauge 9 converts the resistance variation into a resistance variation, and then the resistance variation is converted into a voltage signal through a measurement amplifying circuit to display a test record; be connected with connecting pipe 10 on the side of first cantilever beam 3 and second cantilever beam 5, movable mounting has connecting rod 11 in the connecting pipe 10, splint 12 is installed to connecting rod 11 one end, conveniently rotate splint 12, make and press from both sides tight sample 19 convenient and fast, be equipped with brace table 13 on the lateral wall of connecting pipe 10, it installs screw rod 14 to rotate on the brace table 13, screw rod 14 one end is connected with connecting rod 11, at the position of being connected of screw rod 14 and connecting rod 11, screw rod 14 is rotatable for connecting rod 11, screw rod 14 can not the displacement for connecting rod 11, realize through rotating screw rod 14, thereby drive and control about connecting rod 11, realize adjusting splint 12's position, thereby change splint 12 respectively with last location sword 18, the distance between the sword 6 is fixed a position down, realize clip.

The clamping plate 12 is provided with clamping teeth 15, so that friction between the sample 19 and the clamping plate 12 is increased, and the upper positioning knife 18 and the lower positioning knife 6 are prevented from slipping.

Electronic extensometer 1 installs on telescopic link 16, can adjust electronic extensometer 1's height on telescopic link 16 for electronic extensometer 1 is located and is fit for measuring position, avoids the staff to support, and 16 lower extremes of telescopic link are installed on magnetism supporting seat 17, adsorb on table surface through magnetism supporting seat 17, conveniently remove electronic extensometer 1.

The utility model provides a gauge length adjustable is tensile, to the extensometer, and it has avoided two cutting edge contacts to skid through portable anchor clamps, when pressing from both sides tight easy operation, and the gauge length is adjustable, has increased the application range of extensometer.

Finally, it is noted that the above-mentioned preferred embodiments illustrate rather than limit the invention, and that, although the invention has been described in detail with reference to the above-mentioned preferred embodiments, it will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the scope of the invention as defined by the appended claims.

Claims

1. The utility model provides a scale distance adjustable is tensile, to extensometer which characterized in that: the scale distance adjustable stretching and pressing extensometer comprises an electronic extensometer (1), a first supporting tube (2), a first cantilever beam (3), a second supporting rod (4) and a second cantilever beam (5), one side of the electronic extensometer (1) is fixedly connected with a first supporting tube (2), the first supporting tube (2) is orthogonally connected with a first cantilever beam (3), a lower positioning knife (6) and a first strain gauge (7) are arranged at the end part of the first cantilever beam (3), the first strain gauge (7) is connected with the electronic extensometer (1), the second supporting rod (4) is movably sleeved on the first supporting pipe (2), the positioning is carried out through a positioning screw (8), the second supporting rod (4) is orthogonally connected with the second cantilever beam (5), an upper positioning knife (18) and a second strain gauge (9) are arranged at the end part of the second cantilever beam (5), and the second strain gauge (9) is connected with the electronic extensometer (1); install connecting pipe (10) on the side of first cantilever beam (3) and second cantilever beam (5), movable mounting has connecting rod (11) in connecting pipe (10), and splint (12) are installed to connecting rod (11) one end, are equipped with brace table (13) on the lateral wall of connecting pipe (10), and the screw thread has connect screw rod (14) soon on brace table (13), and screw rod (14) one end is connected with connecting rod (11).

2. The gauge-length adjustable stretch, compression extensometer of claim 1 characterized in that: the clamping plate (12) is provided with a clamping tooth (15).

3. The gauge-length adjustable stretch, compression extensometer of claim 1 characterized in that: the electronic extensometer (1) is arranged on a telescopic rod (16), and the lower end of the telescopic rod (16) is arranged on a magnetic supporting seat (17).