CN201130125Y

CN201130125Y - Floating type centering device capable of rotationally adjusting

Info

Publication number: CN201130125Y
Application number: CNU200720076989XU
Authority: CN
Inventors: 楼渊
Original assignee: Baoshan Iron and Steel Co Ltd
Current assignee: Baoshan Iron and Steel Co Ltd
Priority date: 2007-12-21
Filing date: 2007-12-21
Publication date: 2008-10-08
Anticipated expiration: 2017-12-21

Abstract

A rotatable adjustable floating type centralizing device comprises a fixed base whose upper portion is provided with a through-hole, wherein adjusting holes are opened on the through-hole walls, and locating screws are arranged in the adjusting holes, a push-rod whose one end is penetrated in the through-hole on the upper portion of the fixed base, and forms a step, wherein the locating screws are penetrated through the adjusting holes and are pressed on the push-rod, and a compression spring is arranged on the step end of the push-rod, and is fixed by a guiding cap, and the two ends of the compression spring are respectively pressed with the push-rod step and the inner walls of the guiding cap. Through the compression spring, the clamping portion of a sample starts to flatten and expand towards the two sides of a clamping piece after an arc-shaped stretching sample is clamped by the clamping piece. The push-rod is retracted backwards under the effect of the compression spring, thereby reducing the pressing holding force of the push-rod when in stretching detection. The centralizing device has the characteristics of simple structure, small volume, and high centralizing efficiency and centralizing accuracy and the like when the arc-shaped sample is detected, especially can eliminate the effect of the externality to the stretching sample in the process of detection, and can directly obtain real and effective test data without adding special control circuits and switching elements.

Description

The floating type centralising device of rotatable adjusting

Technical field

The utility model relates to metal tensile test machine testing instrument, the floating type centralising device of rotatable adjusting that particularly a kind of metal tensile test machine is used.

Background technology

The tabular tensile sample mechanical property of metal (steel pipe) is detected, generally carry out, use cupping machine by testing requirements according to standards such as API, ASME, DIN, JIS and GB.

According to the requirement of test standard, the detection of right alignment must be arranged, according to test standard to instrument, when tension test, sample must should be vertical with the lower and upper cross-member of testing machine, so manufacturer respectively is provided with a fixedly centralising device of sample at lower and upper cross-member when the production testing instrument.To guarantee that detected sample and testing machine main shaft are on same axis.

When the steel pipe tensile sample is tested, detect by standards such as ASME, DIN, JIS and GB, its tensile sample is mainly the arcuation tensile sample.

The cupping machine that has German ZWICKSC to produce that the cupping machine that uses mainly adopts at present, its centralising device is fixed, and it is support that a main body is respectively arranged, and has one can adjust the flexible cylinder ejector rod of joint on support, and push rod is fixed with screw.In use can adjust push rod according to the differently width of tensile sample, make between the lower and upper cross-member of tensile sample and cupping machine and the tens(i)ometer to keep vertical, the moving of the crossbeam (tens(i)ometer) by cupping machine tested and automatically with measurement data.Guarantee measurement data accuracy and authenticity.

We know that from steel pipe intercepting longitudinal strip sample be the tabular tensile sample that has arcuation, and the curvature of its arcuation is that the size according to outer diameter of steel pipes decides, and that is to say that big more its curvature of bore of steel pipe is more little, otherwise more little its curvature of the bore of steel pipe is big more.In the stretching testing process, tensile sample by flat intermediate plate clamping after, the retained part of sample is flattened and to the expansion of the both sides of intermediate plate through clamping, stretching.When the retained part of tensile sample flattens and just centralising device forms one bearing force on the cupping machine to being fixed on when both sides are expanded.And fixed centralising device equally also gives tensile sample one anti-bearing force under the bearing force effect, under the effect that forms one bearing force and anti-bearing force each other, just is difficult to obtain the True Data of tension test when tensile sample in test process.Therefore, originally carry out existing certain problem in the testing process, must solve, with the accuracy and the authenticity of the measurement data that improves tension test at tabular tensile sample to arcuation.

Summary of the invention

The purpose of this utility model is to design the floating type centralising device of a kind of rotatable adjusting, on existing cupping machine, the tabular tensile sample of arcuation is carried out eliminating in the testing process centralising device give one bearing force of tensile sample.

For achieving the above object, the technical solution of the utility model is,

The floating type centralising device of rotatable adjusting comprises, holder, and its top has a through hole, and through-hole side wall also has an adjustment hole, and a location screw is set in this adjustment hole; Push rod, the one end is arranged in the through hole on holder top, and this end also forms a step; Set screw passes adjustment hole and is resisted against push rod; Stage clip is arranged at the step end of push rod, and sheathed fixing by a guiding cap, and two ends lean with push rod step and guiding cap inwall respectively.

Again, described holder is L-shaped, and the bottom has and supplies the fixedly fixed orifice of usefulness.

The utility model can correspondingly rotate adjustment at different width tension samples on demand by push rod, and it is fast and accurate to regulate the speed, and can make tensile sample guarantee that all the time detected sample and testing machine are on same axis when stretching detection.

Utilize stage clip, when the arcuation tensile sample after intermediate plate clamps, the retained part of sample begins to flatten and to the expansion of the both sides of intermediate plate.Rotatable adjusting centering push rod will be shunk back backward at the effect lower push rod of stage clip, reduces its bearing force when stretching detection.

The beneficial effects of the utility model

The floating type centralising device simple structure of the utility model, volume are small and exquisite, characteristics such as the high and centering of centering efficient is accurate when being detected, the arcuation tensile sample are arranged, especially the influence of bound pair tensile sample outside in testing process, eliminating, can directly obtain authentic and valid test figure, need not to increase special control circuit and switching device, do not change the control program and the Control Software of origin operation system, efficient, quick and shirtsleeve operation, general and adjust small investment and instant effect easily.Be fit to be installed on the cupping machine of dissimilar models, have a wide range of application value.

Description of drawings

Fig. 1 is a structural representation of the present utility model;

Fig. 2 is the side view of Fig. 1;

Fig. 3 is the vertical view of Fig. 1.

Embodiment

Referring to Fig. 1～Fig. 3, the floating type centralising device of rotatable adjusting of the present utility model comprises, holder 1, and its top has a through hole 101, and through-hole side wall also has an adjustment hole 102, and a location screw 5 is set in this adjustment hole 102; Push rod 2, one end are arranged in the through hole 101 on holder 1 top, and this end also forms a step 21; Set screw 5 passes adjustment hole 102 and is resisted against push rod 2; Stage clip 3 is arranged at the step end of push rod 2, and sheathed fixing by a guiding cap 4, and two ends lean with push rod step 21 and guiding cap 4 inwalls respectively.

Described holder 1 is L-shaped, and the bottom has for the fixing fixed orifice 103 of usefulness.

Push rod 2 can be regulated its centering by rotatable to the sample of different in width when detecting, stage clip 3 can in time be eliminated in to arcuation tensile sample testing process, the retained part of sample flattens and when both sides expands and the formed bearing force of centralising device, and to the influence of tension test generation.

The utility model is installed on the cupping machine, two main bodys are installed in respectively on the upper and lower crossbeam of cupping machine, it is kept vertically each other, utilize the movably effect mutually of the upper and lower crossbeam of cupping machine, make it into as a whole motion assembly.

When the arcuation tensile sample is detected, can carry out the selectivity rotation to push rod according to the different width of tensile sample and adjust.Need not to increase special control circuit and switching device in addition, do not change the control timing of origin operation system.

When the arcuation tensile sample after intermediate plate clamps, the retained part of sample begins to flatten and to the expansion of the both sides of intermediate plate.Rotatable adjusting centering push rod will be shunk back backward at the effect lower push rod of stage clip, reduce its bearing force when stretch detecting, reduced tensile sample have at the trial extraneous bringing power and the True Data that detects of influence.

Claims

1. the floating type centralising device of rotatable adjusting is characterized in that, comprises,

Holder, its top has a through hole, and through-hole side wall also has an adjustment hole, and a location screw is set in this adjustment hole;

Push rod, the one end is arranged in the through hole on holder top, and this end also forms a step; Set screw passes adjustment hole and is resisted against push rod;

Stage clip is arranged at the step end of push rod, and sheathed fixing by a guiding cap, and two ends lean with push rod step and guiding cap inwall respectively.

2. the floating type centralising device of rotatable adjusting as claimed in claim 1 is characterized in that described holder is L-shaped, and the bottom has and supplies the fixedly fixed orifice of usefulness.