CN202420445U

CN202420445U - Metal material tensile deformation detector

Info

Publication number: CN202420445U
Application number: CN201120388876XU
Authority: CN
Inventors: 杨玉强; 曹颖; 赵晓辉
Original assignee: Individual
Current assignee: Individual
Priority date: 2011-10-13
Filing date: 2011-10-13
Publication date: 2012-09-05
Anticipated expiration: 2021-10-13

Abstract

The utility model discloses a metal material tensile deformation detector, wherein a magnetic force adsorption positioning mode is employed, not only can the deformation amount of detected material close to yielding be detected, but also the operation is convenient, and positioning is simple. According to the utility model, a grating ruler is employed as a sensor for detecting the metal material tensile deformation amount, when the pulling force applied to a tested workpiece exceeds a magnetic force, the grating ruler of the sensor is automatically released from the detector, the sensor is effectively protected, and the detection accuracy is guaranteed.

Description

Metal material stretcher strain pick-up unit

Technical field

The utility model relates to the checkout equipment of material mechanical performance, relates in particular to the device that the sensor to test material stretcher strain amount positions, protects.

Background technology

When prior art is carried out extension test to material, adopt displacement transducer that sensor is attached to institute and surveys on the workpiece, produce when being out of shape the dependent variable of sensor synchronized generation correspondence in test piece.

During test, the sensor two ends are separately fixed on the test piece.Will in time remove fixture at test block during near yield deformation, otherwise produce destructive test as a result the time at workpiece, deflection will be above the sensor measurement stroke, and not only test result is inaccurate, also can cause the sensor damage.

Adopt the defective of this fixed form to be: the deflection that can not accurately reflect test block; Sensor is fragile.

The utility model content

The utility model overcomes the deficiency of above-mentioned prior art; A kind of metal material stretcher strain pick-up unit is provided, adopts the mode of absorption location, not only can accurately, in time detect the deflection of measured material the time near yield deformation; And easy to operate, locate simple and direct.

The technical scheme of the utility model is following:

Metal material stretcher strain pick-up unit; Said device; Comprise positioning fixture, following positioning fixture, contact rope, movable grating chi, benchmark grating chi, U type magnetic patch, photoelectric sensor and circuit board, the said positioning fixture of going up is connected with U type magnetic patch with circuit board respectively with following positioning fixture, and photoelectric sensor comprises luminotron and light-receiving tube; Several luminotrons and light-receiving tube branch are listed on the circuit board; The every pair of luminotron, light-receiving tube are relative thirty years of age, between luminotron and light-receiving tube, are provided with the grip block of the two parallel and certain intervals that are spaced from each other, and two grip blocks are provided with the grating hole corresponding to every pair of luminotron, light-receiving tube position; The light that luminotron is sent is received by light-receiving tube through the grating hole; One end of benchmark grating chi is fixed on the medial surface of grip block, and the corresponding end of movable grating chi is plugged in the gap in the middle of two grip blocks, and the other end of benchmark grating chi and movable grating chi is connected magnetic material sheets being respectively; The terminal magnetic material sheets being of benchmark grating chi and movable grating chi is plugged in the U type magnetic patch on the lower clamp, and upper and lower anchor clamps are connected by the contact rope and are suspended on the said extension test equipment.

Benchmark grating chi and movable light canopy chi also promptly are used for the sensor of test material stretching variable.

Said upper and lower positioning fixture all comprises blade, magnet steel, V-type left side magnet stand, the right magnet stand of V-type, stage clip and installing plate; The right magnet stand symmetry of V-type left side magnet stand and V-type is installed on the said installing plate; Both are at the synthetic V-type groove of adjacent; Fixedly magnet steel and spring on the installing plate below this groove, blade is connected with the upper end of said spring, can move with the flexible of spring.

Said V-type left side magnet stand and the corresponding blade side edge of the right magnet stand of V-type are provided with slot, and the dual-side of said blade is plugged in the corresponding slot, and blade can move along this slot

The beneficial effect of the utility model is: when carrying out the material extending experiment, only need upper and lower positioning fixture is adsorbed on the workpiece, operation is very convenient; Improved the work efficiency of material extending experiment; When the suffered pulling force of test piece surpasses magnetic force, the grating chi of sensor will be thrown off from lower clamp automatically, effectively protect sensor, guarantee the accuracy of test effect.

Description of drawings

Fig. 1 is the structural representation of the utility model embodiment.

Fig. 2 is that A in the structural representation shown in Figure 1 is to view.

Fig. 3 is that C in the structural representation shown in Figure 1 is to view.

Fig. 4 is the B-B cut-open view in the structural representation shown in Figure 1.

Fig. 5 is a D-D cut-open view in the structural representation shown in Figure 4.

Fig. 6 is a structural representation of going up positioning fixture.

Fig. 7 is the structural representation of following positioning fixture.

Among the figure, 1 blade, 2 magnet steel, 3V type left side magnet stand, 4 stage clips, 5 installing plates, the right magnet stand of 6V type; 7 slots, 8 rectangular channels, 9 locating slots, positioning fixture on 10, positioning fixture under the 10b, 20 experimental stands; 21 experiment workpiece, the movable grating chi of 22a, 22b benchmark grating chi, 23 contact ropes, 24 steel discs, 25U type magnetic patch; 26 grip blocks, 27a luminotron, 27b light-receiving tube, 28 circuit boards, 29 grating holes, 30 bolts.

Embodiment

Further specify below in conjunction with accompanying drawing and embodiment:

Map 1, the utility model device mainly is made up of last positioning fixture 10a, following positioning fixture 10b, contact rope 23, movable grating chi 22, benchmark grating chi 22b, U type magnetic patch 25, installing plate 5, photoelectric sensor and circuit board.

Last positioning fixture 10a and following positioning fixture 10b are installed on the installing plate 5, and the installing plate 5 of 10a downside is connected with circuit board 28 through bolt 30 on the last positioning fixture, and the installing plate 5 of following positioning fixture 10b downside is connected with U type magnetic patch 25.Photoelectric sensor is made up of luminotron 27a and light-receiving tube 27b; 2

luminotron

27a and 2 light-receiving tube 27b branches are listed on the circuit board 28; The every couple of luminotron 27a, light-receiving tube 27b are relative thirty years of age, between luminotron 27a and light-receiving tube 27b, are provided with two parallel and grip block 26, the two grip blocks certain interval that is spaced from each other and are provided with grating hole 29 corresponding to every pair of luminotron, light-receiving tube position; The light that luminotron 27a is sent is received by light-receiving tube 27b through grating hole 29, sees also Fig. 2.The end of benchmark grating chi 22b is fixed on the medial surface of a grip block 26; The corresponding end of movable grating chi 22a is plugged in the gap in the middle of two grip blocks 26; The other end of benchmark grating chi 22b and movable grating chi 22a is connected a steel disc 24 respectively; The terminal steel disc 24 of benchmark grating chi 22b and movable light canopy chi 22a is plugged on down in the U type magnetic patch 25 on the positioning fixture, sees also Fig. 3. and the end of contact rope 23a is fixed on the experimental stand 20, and it is connected an end and last locating clip.The two ends of contact rope 23b connect upper and lower positioning fixture respectively.

Upper and lower positioning fixture, its structure map 6, Fig. 7.Wherein Fig. 6 has represented the practical structures situation of upper and lower locating clip, and Fig. 7 opens V-type left side magnet stand 3, the right magnet stand 6 of V type artificially to both sides, so that more clearly represent its inner structure.Upper and lower positioning fixture 11a, 10b mainly are made up of blade 1, magnet steel 2, V-type left side magnet stand 3, the right magnet stand 6 of V-type, stage clip 4 and installing plate 5.V-type left side magnet stand 3 is installed on the installing plate 5 with right magnet stand 6 symmetries of V-type.Like this; Form a V-type groove at both adjacents. fixedly magnet steel 2 and stage clip 4 on the installing plate below this groove 5; Magnet steel 2 places the inboard of its stage clip 4; The below of blade 1 has and the corresponding rectangular channel 8 of stage clip 4 external diameters, and blade 1 is plugged on the upper end of stage clip 5 and is attached thereto through this groove 8 and is integral, and moves with the flexible of stage clip 4.The position of V-type left side magnet stand 3 and the right magnet stand 6 corresponding blade sides of V-type is provided with slot 7, and the dual-side of blade 1 is plugged in this slot 7, and blade 1 can move along this pumping slot 7.

When carrying out the experiment of material tensile deformation, upper and lower positioning fixture is placed on along the axial upper and lower position of detecting workpiece.

The test piece of present embodiment is that a cross section is circular round steel.Before experimentizing, the upper and lower locating slot 17 of processing sees also Fig. 5 on test piece.Blade 1 in the anchor clamps slides along groove 7 under the effect of stage clip 4, and it is pressed closer in this groove 17.Left and right V-

type magnet stand

3,6 receives the magnetization of magnet steel 2 and has magnetic; The periphery of test piece is adsorbed on the groove face of the synthetic V-type groove of two magnet stands, sees also Fig. 4, and carry out axial location through the interaction of locating slot 7 and blade 1; The back side of the circuit board 28 that is connected with last anchor clamps installing plate 5 also connects a grating chi 22; With the stay cord 23 parallel with grating chi 22, the end of grating chi 22 and stay cord 23 is connected on the steel disc 24, and the back side of following positioning fixture installing plate 5 connects U magnetic patch 25; Above-mentioned steel disc 24 inserts in the U magnetic patch 25, sees also Fig. 3.

When carrying out stretching experiment, test block will be along with continuing to increase of pulling force will produce stretcher strain, and when the test worker crossed surrender near destruction, the pulling force that test piece 21, grating chi 22 and stay cord 23 receive was maximum.At this moment, stay cord 23 suffered pulling force are adsorbed on the suction in the U type magnetic patch greater than steel disc.So stay cord 23 is pulled out grating chi 22 from U type magnetic patch.Like this; Test piece under tension through yield deformation and going to pot before; Grating chi 22 is just thrown off lower clamp automatically under the effect of stay cord 23; Exempt from the consequence of being broken with test block, effectively protect sensor (being grating chi 22), and measured the maximum tension deflection of test piece the time more exactly near destruction.During use,, just accomplish the positioning action of sensor as long as upper and lower anchor clamps are adsorbed on the test block, convenient and simple, greatly increase work efficiency.

Claims

1. metal material stretcher strain pick-up unit; It is characterized in that: said device; Comprise positioning fixture, following positioning fixture, contact rope, movable grating chi, benchmark grating chi, U type magnetic patch, photoelectric sensor and circuit board, the said positioning fixture of going up is connected with U type magnetic patch with circuit board respectively with following positioning fixture, and photoelectric sensor comprises luminotron and light-receiving tube; Several luminotrons and light-receiving tube branch are listed on the circuit board; The every pair of luminotron, light-receiving tube are relative thirty years of age, between luminotron and light-receiving tube, are provided with the grip block of the two parallel and certain intervals that are spaced from each other, and two grip blocks are provided with the grating hole corresponding to every pair of luminotron, light-receiving tube position; The light that luminotron is sent is received by light-receiving tube through the grating hole; One end of benchmark grating chi is fixed on the medial surface of grip block, and the corresponding end of movable grating chi is plugged in the gap in the middle of two grip blocks, and the other end of benchmark grating chi and movable grating chi is connected magnetic material sheets being respectively; The terminal magnetic material sheets being of benchmark grating chi and movable grating chi is plugged in the U type magnetic patch on the lower clamp, and upper and lower anchor clamps are connected by the contact rope and are suspended on the said extension test equipment.

2. metal material stretcher strain pick-up unit according to claim 2; It is characterized in that: said upper and lower positioning fixture all comprises blade, magnet steel, V-type left side magnet stand, the right magnet stand of V-type, stage clip and installing plate; V-type left side magnet stand is installed on the said installing plate with the right magnet stand symmetry of V-type, and both synthesize a V-type groove at adjacent, fixedly magnet steel and spring on the installing plate below this groove; Blade is connected with the upper end of said spring, can move with the flexible of spring.

3. metal material stretcher strain pick-up unit according to claim 3; It is characterized in that: said V-type left side magnet stand and the corresponding blade side edge of the right magnet stand of V-type; Be provided with slot, the dual-side of said blade is plugged in the corresponding slot, and blade can move along this slot.