CN111122306A

CN111122306A - Upper clamp for high-speed tensile test of steel

Info

Publication number: CN111122306A
Application number: CN201911341922.8A
Authority: CN
Inventors: 潘勇; 马维根; 王长西; 王奎山; 刘冬喜
Original assignee: Dongtai Hongkai Stainless Steel Co Ltd
Current assignee: Dongtai Hongkai Stainless Steel Co Ltd
Priority date: 2019-12-24
Filing date: 2019-12-24
Publication date: 2020-05-08

Abstract

The invention discloses an upper clamp for high-speed tensile test of steel, which comprises: the fixing base that is located the side, fixing base one side fixed connection side seat, side seat one side fixed connection sleeve, wear to establish the removal axle that passes side seat and fixing base in the sleeve, fixing base opposite side fixed connection places the board, place the equal integrated into one piece of board middle part upper and lower side and connect the arc bellying, place on the board opposite side, the downside all is equipped with the V type recess of placing steel, remove the articulated triangle intermediate plate of axle one end, the upper and lower end of triangle intermediate plate opposite side all articulates the connecting rod, the articulated splint one side bottom of connecting rod, the articulated arc bellying in splint one side top. Its compact structure can place two steel and press from both sides tightly simultaneously, carries out tensile test, and is efficient, uses manpower sparingly.

Description

Upper clamp for high-speed tensile test of steel

Technical Field

The invention relates to the field of processing auxiliary equipment, in particular to an upper clamp for a high-speed tensile test of steel.

Background

Currently, there are two methods of testing high strain rate tensile tests, servo hydraulics and hopkinson bars. The Hopkinson bar high-speed tensile test system generally has the maximum test speed of 103s < -1 >, and the hydraulic servo system generally has the maximum test speed of 102s < -1 >, so that compared with the Hopkinson bar, the test environment of the hydraulic servo system is more stable, the test control is more accurate, and the measured data is more reliable, so that the hydraulic servo high-speed tensile test system is mostly adopted.

In the high-speed tensile test of tubular steel, the sample need the centering centre gripping in order to guarantee to receive the unipolar tensile force, because test speed is too fast, still need to guarantee that the sample centre gripping is firm, especially intensity is higher and the sample that has the coating on the surface, otherwise easily takes place to skid, influences the test result. The upper clamp of the existing hydraulic servo high-speed tensile testing machine is connected with a tensile rod and can slide upwards, the position is not fixed during standby and is an active end, and the lower clamp is a fixed end. In the testing process, make sample upper end and last anchor clamps top align in order to guarantee the perpendicular centering of sample with the centre gripping end stretches into in the anchor clamps on the sample, if sample top processing is irregular or artificial judgement error this moment, the sample can't be followed the central line and aimed at when can leading to the installation, tensile force non-axial during the test, influence the test result accuracy, because go up anchor clamps non-fixed, the process of screwing up needs operating personnel to use great power, if test intensity is higher or the sample of surface coating, the initiative end takes place the sample easily and skids, cause the test result can't be used

Disclosure of Invention

Aiming at the defects in the prior art, the invention provides the upper clamp for the high-speed tensile test of the steel, which has a compact structure, can be used for placing two steels for clamping simultaneously for tensile test, has high efficiency and saves manpower.

In order to achieve the purpose of the invention, the invention adopts the technical scheme that:

an upper clamp for high-speed tensile test of steel comprises: the fixing base that is located the side, fixing base one side fixed connection side seat, side seat one side fixed connection sleeve, wear to establish the removal axle that passes side seat and fixing base in the sleeve, fixing base opposite side fixed connection places the board, place the equal integrated into one piece of board middle part upper and lower side and connect the arc bellying, place on the board opposite side, the downside all is equipped with the V type recess of placing steel, remove the articulated triangle intermediate plate of axle one end, the upper and lower end of triangle intermediate plate opposite side all articulates the connecting rod, the articulated splint one side bottom of connecting rod, the articulated arc bellying in splint one side top.

Furthermore, the other end of the moving shaft is fixedly connected with an existing power mechanism for providing reciprocating motion power.

Further, splint are the T-shaped structure, the splint opposite side is equipped with crooked clamping part, clamping part fixed connection anti-skidding gasket, inner wall just are located the steel lateral wall.

Furthermore, an anti-skid gasket is fixedly connected to the inner wall of the V-shaped groove.

The invention has the beneficial effects that:

tubular steel is placed on the inner wall of the V-shaped groove, the bending clamping portion on the other side of the clamping plate is used for being fixed on the outer side wall of the tubular steel, when external force applies reciprocating force to the moving shaft, the connecting rod is driven to move, the connecting rod drives the clamping plate to move, and therefore clamping and loosening of the tubular steel are achieved. Its compact structure can place two steel and press from both sides tightly simultaneously, carries out tensile test, and is efficient, uses manpower sparingly.

Drawings

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

FIG. 2 is a front view of the present invention;

reference symbol comparison table:

1-moving shaft, 2-sleeve, 3-fixed seat, 4-placing plate, 5-arc-shaped bulge, 6-V-shaped groove, 7-clamping plate, 8-connecting rod, 9-triangular intermediate plate, 10-side seat and 11-steel.

Detailed Description

The following further describes embodiments of the present invention with reference to the accompanying drawings. In which like parts are designated by like reference numerals.

It should be noted that the terms "front," "back," "left," "right," "upper" and "lower" used in the following description refer to directions in the drawings, and the terms "inner" and "outer" refer to directions toward and away from, respectively, the geometric center of a particular component.

In order to make the content of the present invention more clearly understood, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention.

As shown in fig. 1 and 2, an upper fixture for a high-speed tensile test of steel material includes: the fixing base 3 that is located the side, 3 one side fixed connection side seats 10 of fixing base, 10 one side fixed connection sleeve 2 of side seat, wear to establish the removal axle 1 that passes side seat 10 and fixing base 3 in the

sleeve

2, 3 opposite side fixed connection of fixing base place board 4, place the equal integrated into one piece of board 4 middle part upper and lower side and connect arc bellying 5, place on the board 4 opposite side, the downside all is equipped with the V type recess 6 of placing steel 11, remove the articulated triangle intermediate lamella 9 of 1 one end of axle, the equal articulated connecting rod 8 of lower extreme on the triangle intermediate lamella 9 opposite side, the articulated splint 7 one side bottom of connecting rod 8, the articulated arc bellying 5 in splint 7 one side top.

The other end of the moving shaft 1 is fixedly connected with an existing power mechanism for providing reciprocating motion power. Splint 7 is the T-shaped structure, splint 7 opposite side is equipped with crooked clamping part, clamping part fixed connection anti-skidding gasket, on the inner wall and be located the steel lateral wall. And the inner wall of the V-shaped groove 6 is fixedly connected with an anti-skid gasket.

In the device use, place tubulose steel on V type recess inner wall, the crooked clamping part of splint opposite side is used for fixing on the steel lateral wall, and when external force applyed the reciprocating force for removing the axle, drives the connecting rod motion, and the connecting rod drives the splint motion to the realization is tight and not hard up with the clamp of tubulose steel. The clamping device is compact in structure and can be used for placing two steel materials to clamp simultaneously.

The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the present invention, and any modifications, equivalents and improvements made within the spirit and principle of the present invention should be included in the scope of the present invention.

Claims

1. The utility model provides a high-speed tensile test of steel is with last anchor clamps which characterized in that includes: a fixed seat (3) positioned on the side surface, one side of the fixed seat (3) is fixedly connected with a side seat (10), one side of the side seat (10) is fixedly connected with a sleeve (2), a moving shaft (1) penetrating through the side seat (10) and the fixed seat (3) is arranged in the sleeve (2), the other side of the fixed seat (3) is fixedly connected with a placing plate (4), the upper side and the lower side of the middle part of the placing plate (4) are integrally connected with an arc-shaped bulge part (5), the upper side and the lower side of the other side of the placing plate (4) are both provided with a V-shaped groove (6) for placing steel (11), one end of the moving shaft (1) is hinged with a triangular intermediate plate (9), the upper end and the lower end of the other side of the triangular intermediate plate (9) are both hinged with a connecting rod (8), the connecting rod (8) is hinged to the bottom end of one side of the clamping plate (7), and the top end of one side of the clamping plate (7) is hinged to the arc-shaped protruding portion (5).

2. The upper clamp for the high-speed tensile test of the steel according to claim 1, wherein: the other end of the moving shaft (1) is fixedly connected with an existing power mechanism for providing reciprocating moving power.

3. The upper clamp for the high-speed tensile test of the steel according to claim 1, wherein: splint (7) are the T-shaped structure, splint (7) opposite side is equipped with crooked clamping part, clamping part fixed connection anti-skidding gasket, on the inner wall and be located the steel lateral wall.

4. The upper clamp for the high-speed tensile test of the steel according to claim 1, wherein: and the inner wall of the V-shaped groove (6) is fixedly connected with an anti-skid gasket.