CN209945863U

CN209945863U - Impact sample universal clamp

Info

Publication number: CN209945863U
Application number: CN201920710215.0U
Authority: CN
Inventors: 王自信; 邢小芳; 邓亮; 李忠响; 刘通
Original assignee: Shandong Shengli Steel pipe Co Ltd
Current assignee: Shandong Shengli Steel pipe Co Ltd
Priority date: 2019-05-17
Filing date: 2019-05-17
Publication date: 2020-01-14
Anticipated expiration: 2029-05-17

Abstract

The impact sample universal clamp comprises a chuck rear clamping piece, a chuck front clamping piece, a clamping rod I, a clamping rod II, a handle connecting universal shaft, a straight handle and a bent handle; the method is characterized in that: the first clamping rod and the second clamping rod are connected through a handle connecting universal shaft, the left end of the first clamping rod is connected through a cross-linking point of two inclined support rods which are crossed with the upper end face of the clamping head rear clamping piece through a clamping head connecting shaft I, and the right end of the first clamping rod is provided with a straight handle for holding; the left end of the second clamping rod is connected with a cross-linking point of two inclined supporting rods which are crossed with the upper end surface of the front clamping piece of the clamping head through a second clamping head connecting shaft, and the right end of the second clamping rod is provided with a bent handle of an annular ring.

Description

Impact sample universal clamp

Technical Field

The invention relates to an impact sample universal clamp for a Charpy impact test, which is suitable for a V-shaped notch sample for the Charpy impact test.

Background

At present, most of Charpy impact tests need to be carried out at low temperature, a common Charpy impact testing machine cannot finish cold insulation and tests at the same time, a sample needs to be placed in a low-temperature instrument for cooling, after the time and the temperature meet the standard requirements, the sample is transferred to an anvil block of the Charpy impact testing machine from the low-temperature instrument for impact tests, when the sample is taken out from the low-temperature instrument and the test is finished, the requirement is controlled within 5 seconds, the transferring process cannot be finished by hands, and only tools can be used, on one hand, the cold insulation of the sample at low temperature is realized, cooling liquid is generally industrial alcohol, on the other hand, if the sample is placed on the anvil block, the test result is invalid due to the fact that a hammer head is obliquely impacted; the existing tool is a common sample clamp, the cold insulation box of the cryoscope is small and has a certain depth, the sample clamp is labor-consuming to clamp a sample, the common sample clamp cannot change the angle when being placed on an anvil block, the time is a little long, the phenomenon of slipping can occur, the time exceeds the standard 5-second requirement, and the test is invalid; the invention overcomes the defects, provides the Charpy impact V-shaped notch test sample clamp with the cardan shaft to replace a common clamp, shortens the time from the low temperature instrument to the test machine for placing the test sample, improves the accuracy of the placing position of the test sample, and greatly reduces the influence on the test result caused by the placing position of the test sample.

Disclosure of Invention

The invention aims to provide an impact sample universal clamp of a Charpy impact V-shaped notch sample with a universal shaft, which shortens the time from a low temperature instrument to the placement of the sample on a testing machine, improves the accuracy of the placement position of the sample, and greatly reduces the influence on the test result caused by the placement position of the sample.

The impact sample universal clamp comprises a chuck rear clamping piece, a chuck front clamping piece, a clamping rod I, a clamping rod II, a handle connecting universal shaft, a straight handle and a bent handle; the method is characterized in that:

1. the first clamping rod and the second clamping rod are connected through a handle connecting universal shaft, the left end of the first clamping rod is connected through a cross-linking point of two inclined support rods which are crossed with the upper end face of the clamping head rear clamping piece through a clamping head connecting shaft I, and the right end of the first clamping rod is provided with a straight handle for holding; the left end of the second clamping rod is connected with a cross-linking point of two inclined supporting rods which are crossed with the upper end surface of the front clamping piece of the clamping head through a second clamping head connecting shaft, and the right end of the second clamping rod is provided with a bent handle of an annular ring.

2. The clamping piece is a rectangular slice square block behind the chuck, the inside surface of the clamping piece respectively has a rectangle square block bulge towards the both ends of clamping piece one side before the chuck behind the chuck promptly, the inside surface of the clamping piece behind these two rectangle square block bulges the perpendicular to chuck to constitute a U-shaped square groove with the inside surface of clamping piece behind the chuck, the length of U-shaped square groove is 1mm ~ 3mm than the length of Charpy impact test V type breach sample, the groove depth is less than the half of Charpy impact test V type breach sample height.

3. The front clamping piece of the chuck is a rectangular sheet square, a V-shaped bulge is arranged on the inner side surface of the front clamping piece of the chuck, namely towards the center of the rear clamping piece of the chuck, and the V-shaped bulge is an isosceles triangle.

4. The upper end surface of the clamping piece behind the clamping head is provided with two cross-linked inclined supporting rods, and the two inclined supporting rods are fixedly arranged at the positions, close to the two ends, of the upper end surface of the clamping piece behind the clamping head; the upper end surface of the front clamping piece of the chuck is provided with two cross-linked inclined supporting rods, and the two inclined supporting rods are fixedly arranged on the upper end surface of the front clamping piece of the chuck close to the two ends.

5. The length of the clamping piece behind the clamping head is similar to that of the clamping piece in front of the clamping head.

6. A V-shaped groove is formed in the center of the Charpy impact test V-shaped notch sample, the V-shaped groove is an isosceles triangle groove, and a V-shaped protrusion of a front clamping piece of the chuck is matched with the V-shaped groove of the Charpy impact test V-shaped notch sample.

Compared with the prior art, the invention has the following advantages:

1. the universal shaft connected with the handle replaces a common connecting shaft, so that the operation is more convenient.

2. The invention shortens the sample moving time and increases the sample moving stability.

3. The invention improves the accuracy of the sample placing position and greatly reduces the influence on the test result caused by the sample placing position.

Drawings

FIG. 1 is a schematic view of an embodiment of the present invention;

FIG. 2 is a detailed schematic view of the handle attachment cardan shaft shown in FIG. 1;

FIG. 3 is a schematic view of the chuck of FIG. 1 in holding a sample;

FIG. 4 is a schematic view of a rear jaw of the chuck of FIG. 1;

FIG. 5 is a schematic view of a Charpy impact test V-notch specimen;

fig. 6 is a schematic view of the front jaw of the chuck of fig. 1.

In FIGS. 1-6: 1. the test device comprises a chuck rear clamping piece, 2, a Charpy impact test V-shaped notch test sample, 3, a chuck front clamping piece, 4, a first clamping rod, 5, a second clamping rod, 6, a straight handle, 7, a bent handle, 8, a handle connecting universal shaft, 9, a first chuck connecting shaft, 10, a second chuck connecting shaft, 11, a ball head, 12, a ball socket, 13, a chuck front clamping piece V-shaped positioning bulge, 14 and a test sample V-shaped positioning notch.

Detailed Description

In the embodiment shown in fig. 1-6, the impact specimen universal clamp comprises a chuck rear clamping piece 1, a chuck front clamping piece 3, a clamping rod I4, a clamping rod II 5, a handle connecting universal shaft 8, a straight handle 6 and a bent handle 7; the method is characterized in that: the first clamping rod 4 and the second clamping rod 5 are connected through a handle connecting universal shaft 8, the left end of the first clamping rod 4 is connected with a cross-linking point of two inclined supporting rods which are crossed with the upper end surface of the chuck rear clamping piece 1 through a chuck connecting shaft I9, and the right end of the first clamping rod 4 is provided with a straight handle 6 for holding hands; the left end of the second clamping rod 5 is connected with a cross-linking point of two inclined supporting rods which are crossed with the upper end surface of the front clamping piece 3 of the clamping head through a second clamping head connecting shaft 10, and the right end of the second clamping rod 5 is provided with an annular bent handle 7.

Clamping piece 1 is a rectangular slice square behind the chuck, clamping piece 1 medial surface respectively has a rectangle square arch towards the both ends head of 3 one sides of clamping piece before the chuck promptly behind the chuck, the medial surface of clamping piece 1 behind these two protruding perpendicular to chuck of rectangle square, and constitute a U-shaped square groove with the medial surface of clamping piece 1 behind the chuck, the groove length of U-shaped square groove is 1mm ~ 3mm than the length of Charpy impact test V type breach sample 2, the groove depth is less than the half of Charpy impact test V type breach sample 2 height.

The front clamping piece 3 of the chuck is a rectangular sheet square, a V-shaped bulge is arranged on the inner side surface of the front clamping piece 3 of the chuck, namely towards the center of the rear clamping piece 1 of the chuck, and the V-shaped bulge is an isosceles triangle.

The upper end surface of the clamping head rear clamping piece 1 is provided with two cross-linked inclined supporting rods, and the two inclined supporting rods are fixedly arranged at the positions, close to the two ends, of the upper end surface of the clamping head rear clamping piece 1; two cross-linked inclined supporting rods are arranged on the upper end surface of the front clamping piece 3 of the chuck, and the two inclined supporting rods are fixedly arranged on the upper end surface of the front clamping piece 3 of the chuck close to the two ends.

The length of the clamping piece 1 at the back of the clamping head is similar to that of the clamping piece 3 at the front of the clamping head.

The centre of the Charpy impact test V-shaped notch sample 2 is provided with a V-shaped groove which is an isosceles triangle groove, and the V-shaped protrusion of the chuck front clamping piece 3 is matched with the V-shaped groove of the Charpy impact test V-shaped notch sample 2.

During operation, a right hand holds the straight handle 6 of the first clamping rod 4, a forefinger of the right hand extends into the annular ring of the bent handle 7 of the second clamping rod 5, the forefinger is moved outwards to enable the front clamping piece 3 and the rear clamping piece 1 of the chuck to open the universal clamp, then the opened universal clamp extends into the low temperature instrument, the V-shaped bulge of the front clamping piece 3 of the chuck is clamped into the V-shaped groove of the Charpy impact test V-shaped notch sample 2, and the forefinger is moved inwards to enable the front clamping piece 3 of the chuck to lean against the rear clamping piece 1 of the chuck to clamp the Charpy impact test V-shaped notch sample 2; after clamping the Charpy impact test V-shaped notch sample 2, quickly lifting the right hand and moving the right hand to the lofting position of the testing machine, then keeping the straight handle 6 held by the right hand immovably and keeping the chuck rear clamping piece 1 immovably, moving the index finger of the right hand outwards to make the chuck front clamping piece 3 far away from the chuck rear clamping piece 1 and lifting the chuck front clamping piece upwards, and then quickly moving the right hand to make the chuck rear clamping piece 1 push the Charpy impact test V-shaped notch sample 2 to move into the lofting position of the testing machine, immediately moving the chuck rear clamping piece 1 after the Charpy impact test V-shaped notch sample 2 is placed in place, and immediately performing an impact test.

Claims

1. The impact sample universal clamp comprises a chuck rear clamping piece (1), a chuck front clamping piece (3), a clamping rod I (4), a clamping rod II (5), a handle connecting universal shaft (8), a straight handle (6) and a bent handle (7); the method is characterized in that: the first clamping rod (4) and the second clamping rod (5) are connected through the handle connecting universal shaft (8), the left end of the first clamping rod (4) is connected with a cross-linking point of two inclined support rods which are crossed with the upper end surface of the chuck rear clamping piece (1) through a chuck connecting shaft I (9), and the right end of the first clamping rod (4) is provided with the straight handle (6); the left end of the second clamping rod (5) is connected with a cross-linking point of two inclined supporting rods which are crossed with the upper end face of the front clamping piece (3) of the chuck through a second chuck connecting shaft (10), and the right end of the second clamping rod (5) is provided with an annular ring of the bending handle (7).

2. The impact specimen gimbal clamp of claim 1, wherein: the upper end surface of the chuck rear clamping piece (1) is provided with two cross-linked inclined supporting rods, and the two inclined supporting rods are fixedly arranged at the positions, close to the two ends, of the upper end surface of the chuck rear clamping piece (1); two cross-linked oblique supporting rods are installed on the upper end face of the clamping piece (3) in front of the chuck, and the two oblique supporting rods are fixedly installed at the positions, close to the two ends, of the upper end face of the clamping piece (3) in front of the chuck.