CN2350750Y - Free backing plate set for tension tester - Google Patents

Abstract

The utility model relates to a backing plate set which is arranged on the top surface of a control box of a tension tester. A core plate which is penetrated with a bolt is arranged in a ring seat, ball bearing plates which contain steel balls are respectively covered on the upper surface and the lower surface of the core plate, a plurality of plug holes are arranged between the outer ring surface and the inner ring surface of the ring seat, and a plurality of plungers which have springs inside are arranged in the plug holes. The outer side of the ring seat is tightly sheathed by a tight ring, and the top surface is screwed and sealed by a panel. A bolt of the backing plate set is in the screw connection with a lower clamping claw of the tension tester after penetrating through the panel. When the utility model is used, the lower clamping claw can be freely moved by the backing plate set, so that the lower clamping claw can be kept at the same axial line position with an upper clamping claw, a material testing rod is kept with a correct verticality, and the accurate and credible tension value can be obtained.

Description

The free disc group of tensile test machine

The utility model is the disc structure of a kind of use on the tensile test machine, the following jaw combination with it that it utilizes a pad group that can be offset and makes the tensile test machine, so when the tensile test machine carries out tensile test, following jaw can revise its position in good time and upper gripper jaw is the coaxial cable state, to obtain tensile test value accurately.

The tensile test of material is for judging the good bad important tests of material, the method of its test is that the two ends with strip material are fixed tightly in two pulling force ends, make two pulling force ends relative to outwards moving again, material is elongated or breaks, and when elongating to a certain size or breaking, measure at that time draw the affair value, convert by this value of thrust and learn the tensile strength of material.

Existing machine 1 general structure as shown in Figure 1 as the material tensile test, it has and stands a vertical column 11 on a control box 10, the case, and one of suspension is provided with the head 13 of Displaying Meter 12 on the post; Its upper gripper jaw 14 of a pair of in addition jaw is installed in jaw 15 under head 13 belows and then is installed on the face 16 of top case face of control box 10; When carrying out tensile test, material is to be clamped between the upper and lower jaw 14,15 as above-mentioned tensile test machine 1, and head 13 and read value of thrust by Displaying Meter 12 then rises; In this operator scheme, well-known though material just merely is clamped in 14,15 of upper and lower jaws, if the clamping power deficiency of material then can generating material be broken away from and can't predict the situation of value of thrust from jaw; Another kind of situation then is uncared-for, and that is exactly whether the verticality of material when being held be correct; Because head 13 is to rise in vertical mode, if the state of material clamping is a deflection slightly, its measured value of thrust error to some extent then; Perhaps above-mentioned situation when the tensile test machine has just dispatched from the factory via the right alignment of the upper and lower jaw of accurate adjustment, and use under the test material rod of unified specification shape, perhaps can unlikelyly produce; Only, when tensile test machine 1 used the material bar of back or necessary clamping unnormalized year in year out, we dare not extravagantly hope that its measured data are still accurate; The upper and lower jaw 14,15 of especially existing tensile test machine 1 all is fixed on head 13 and face 16, shows no sign of its mutual adjustment of any permission function of position each other; Therefore, as if we can only sit by and watch and accept this and occur in the fact on the tensile test machine that used or even newly dispatched from the factory.

For the fixed upper and lower jaw that solves existing tensile test machine has no way of providing the adjustment of right alignment each other, so that cause the problem that influences the accuracy of value of thrust because of prod clamping verticality inadequately, fundamental purpose of the present utility model promptly is to provide a kind of free disc group of tensile test machine, provides the tensile test facility to have full-automatic concentric to align the effect that obtains accurate tensile test value to reach whereby.

For achieving the above object, characteristics of the present utility model be design a kind of can automatic shift to the following jaw of the heart; To be that face that following jaw is installed is inner form a movably mechanism for it, and this mechanism has a core of establishing for the bolt spiral shell, and this bolt is fixedly arranged on web member on the face for jaw down again; And bead supporting plate and following bead supporting plate on one are respectively laid in the top and bottom of core, are putting several steel balls in the bead supporting plate; Combination as above then is positioned in the ring seat, ring seat underlying one base plate, on screw togather a panel; In addition the ring side of ring seat is established several transverse axis holes, fills in plunger in the hole, the plunger center is established a blind hole again and implanted spring; Last put a beam ring at the ring seat outer shroud and prevent that the spring ricochet of plunger from going out, and above-mentioned whole assembly is run through downwards on the control box end face that ring seat is fixed at the tensile test machine by panel; So, will descend jaw and the bolt bolt that protrudes out on panel, and prod is clamped between the upper and lower jaw; When the rising head makes when moving on the upper gripper jaw, following jaw with prod by little pull-up up and make core in ring seat, produce the displacement of inertia; So, just the prod that perhaps is not vertical clamping fully can be adapted to fully vertically, such value of thrust that tests out is just more credible; And such mechanism all can be shifted to the heart, not adjustment that must be artificial can be provided at the clamping of difformity prod the time automatically.

As seen from the above description, the utility model is compared with existing apparatus and is had tangible advantage and positive result of use, when i.e. jaw and upper gripper jaw gripping testing of materials instantly rod is carried out tensile test, following jaw can make itself and upper gripper jaw remain on same axial location by disc group automatic shift, allow the testing of materials rod keep correct verticality by this, thereby obtain accurate believable value of thrust.

Below promptly be the complete description of the utility model conjunction with figs. and preferred embodiment:

The simple declaration of accompanying drawing:

Fig. 1 is the forward sight outside drawing of existing tensile test machine;

Fig. 2 is a part exploded perspective view of the present utility model;

Fig. 3 is of the present utility model in conjunction with fragmentary top cut-open view and enforcement illustration;

Fig. 4 is of the present utility model in conjunction with front cross sectional view and enforcement illustration.

See also Fig. 2, the utility model is to have comprised members such as panel 2, last bead supporting plate 3, core 4, following bead supporting plate 5, base plate 6, ring seat 7 and beam ring 8, wherein: an axis hole 20 is established at the center of panel 2 and circumferential surface is provided with large and small counter sink 21,22, the root edge face of panel 2 is provided with large and small counter sink 21,22, and the root edge of panel 2 then forms a neck edge 23 (not shown); Upper and lower bead supporting plate 3,5 respectively is an annular sheet body, and its plate body is provided with the pearl slotted eye 30,50 of annular arrangement; Core 4 is one to be provided with the annular slab of fish eyelet 40 at central plane; Base plate 6 is a thin rounded flakes plate; Ring seat 7 is annular solids, and its inner ring surface root edge forms an antelabium 70, and the pedestal end face is established the screw 71 of several ring-type Boulezs and bored a hole 72, establishes several consents that is through to inner ring surface 73 again on outer ring surface; Beam ring 8 is a thin slice ring.

See also Fig. 2, Fig. 3, assembling of the present utility model is that base plate 6 is placed on the interior ring antelabium 70 of ring seat 7, steel ball 90 is put into down in the pearl slotted eye 50 of bead supporting plate 5 and the following bead supporting plate 5 after will assembling is put on base plate 6 again; Bolt 91 also is seated in down on the bead supporting plate 5 after passing the fish eyelet 40 of core 4 again; Upward bead supporting plate 3 covers pass bolt 91 and place on the core 4 in addition, imbed steel ball 90 equally in the pearl slotted eye 30 of last bead supporting plate 3; Then panel 2 is passed bolt 90 with its axis hole 20 covers, and utilize screw 92 to be screwed in the screw 71 of ring seat 7, panel 2 and ring seat 7 are combined into one from counter sink 22; The bolt 91 that protrudes from panel 2 in addition wears a packing 93 again and nut 94 is lived panel 2 axis holes 20 with involution, but nut 94 packing packing 93 downwards moves so that packing 93 still can be affixed on panel 2 surfaces.Implant a plunger 95 that is provided with blind hole 950 in ring seat 7 consents 73 of combinations thereof body, insert a spring 96 in the blind hole 950 again, it is to adopt the perforate end towards outer ring surface for it when implanting, and then is placed in ring seat 7 outer shrouds with beam ring 8 and is stuck in the bottom surface neck edge 23 of panel 2; At last this assembly is screwed into control box 10 end faces that run through ring seat 7 perforation 72 and be installed in tensile test machine 1 with long spiro nail 97 from panel 2 counter sinks 21 and finishes assembling.

Please continue and consult Fig. 3, Fig. 4, the utility model is when assembling, former core 4 and the upper and lower bead supporting plate 3,5 that has been placed in the ring seat 7, be subjected to replacing mutually of plunger 95 that ring seat 7 ring limits implant and spring 96, remain on the interior ring center of ring seat 7 after making its installing, this measure can guarantee sheathed bolt 91 in the central drive core 4 and up and down during bead supporting plate 3,5 displacements unlikely generation end limit do not had the predicament of displacement even at the cost of one's life with ring seat 7 inner ring surfaces.The following jaw 15 of tensile test machine 1 is to be screwed on the bolt 91 of the present utility model, and when carrying out tensile test, and prod is subjected to drawing high of upper gripper jaw 14 and jaw 15 is dragged draw bolt 91 little risings, allow core 4 upwards compacting go up bead supporting plate 3; This moment is if prod is coaxial completely vertical in that 14,15 of upper and lower jaws are non-, then bolt 91 is being desired to keep under its situation about vertically setting up, can force core 4 to reach by moving and make down jaw 15 and upper gripper jaw 14 verticality at last at same axis towards a certain inner ring surface of ring seat 7, in this process, the steel ball 90 that is embedded in last bead supporting plate 3 has been undertaken the function that core 4 is moved easily; In like manner, when carrying out the installing of prod usually, also can utilize and transfer the position of moving bolt 91, the prod of non-standard body (unnormalized) vertically is installed between upper and lower jaw as far as possible, at this moment allowing bolt 91 drive the mobile easily power-assisted of core 4 is by being located at down the steel ball 90 in the bead supporting plate 5.

In sum, the utility model provides a disc group that can allow jaw under the tensile test machine move freely the location, in view of the above, makes that the clamping of prod is normal to be protected in coaxial plumbness and therefore obtain accurate believable tensile test value.

Claims (3)

1, a kind of free disc group of tensile test machine is characterized in that: mainly comprised panel, upper and lower bead supporting plate, core, base plate, ring seat, beam ring, steel ball, bolt, screw, packing, nut, plunger, spring and long spiro nail member, wherein:

Panel, its center have several large and small counter sinks that an axis hole and axis hole ring are placed, and the plate body root edge forms a neck edge again;

Upper and lower bead supporting plate respectively is an annular sheet body, and is equipped with the pearl slotted eye of annular arrangement on plate body;

Core is one to be provided with the annular slab of center fish eyelet;

Base plate is a thin rounded flakes plate;

Ring seat is an annular solid, and its inner rim root edge forms an antelabium, establishes the screw and the perforation of several ring-type Boulezs on the end face of pedestal, establishes the consent that several are through to inner ring surface again on outer ring surface;

Beam ring is a thin slice ring;

Plunger is a stopper that is provided with blind hole;

The assembling of above-mentioned member is that base plate is inserted on the antelabium of ring seat, and following bead supporting plate places on the base plate and in its pearl slotted eye again and puts into steel ball; Moreover, bolt wear fish eyelet into core, and another go up bead supporting plate and pass bolt and be placed on above the core, put into steel ball simultaneously in the pearl slotted eye of bead supporting plate on it; Panel is covered bolt with central shaft hole be covered on the ring seat and wear by the panel counter sink and be screwed into the ring seat screw, panel and ring seat are combined into one with screw; Inserting spring in the plunger blind hole again, and implant the consent of ring seat towards ring seat outer ring surface mode with the blind hole open end is placed in beam ring the ring seat outer shroud again and is stuck in the bottom neck edge of panel; In addition, a packing cover passes bolt and makes it to seal the axis hole of panel with the nut screw lock; Pass the control box end face of ring seat spiral shell with long spiro nail from the other counter sink of panel, the combinations thereof body is combined with the tensile test machine at the tensile test machine.

2, the free disc group of tensile test machine as claimed in claim 1 is characterized in that: wherein the following jaw of tensile test machine is on the solid bolt in being located in core of spiral shell.

3, the free disc group of tensile test machine as claimed in claim 1 is characterized in that: when wherein packing is encapsulated on the panel axis hole by the nut spiral shell, be to be a kind of pine that still allows packing to move to screw togather.

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