CN206593963U - A kind of fired common brick resistance to compression fixture - Google Patents

Abstract

The utility model discloses a kind of fired common brick resistance to compression fixture, it is related to fired common brick compression strength detection aid field, including top pressing device, jig arm, connecting plate and the compression plate being placed on pressure testing machine, the top pressing device includes bearing plate, pressure plare and transmission rod, the connecting plate center offers the hole for accommodating the transmission rod, the connecting plate two ends with prestressed articulated elements by symmetrically connecting the jig arm, the jig arm is provided with the seesaw on top and the pinch of bottom, the intermediate width of the compression plate and two pinches is adapted.When not being pressurized, the jig arm clamps sample, jig arm is opened during compression, pressure passes to sample by the top pressing device, both it can clamp, and not influence test data, and improve test efficiency, the sample for solving fired common brick non-forming sample preparation in the prior art easily obscures, in groups sample separate, the problem of influence test efficiency.

Description

A kind of fired common brick resistance to compression fixture

Technical field

The utility model is related to fired common brick compression strength detection aid field, more particularly to fired common brick resists Compressive Strength detects sample holder field of tool, is a kind of fired common brick resistance to compression fixture specifically.

Background technology

In the compressive strength test of fired common brick, the preparation method of sample be once molded sample preparation, post forming sample preparation, Non-forming sample preparation these three.One-shot forming sample preparation refers to, fired common brick sample is sawn into two brick bats from centre, will have been cut Two brick bats opened are put into the water purification of room temperature to soak and taken out after 20min~30min, and the 20min that dripped on iron wire net rack~ 30min, is fitted into sampling die with fracture opposite direction, controls two bat spacing not should be greater than 5mm with plate, the big face of brick with Mould spacing not should be greater than 3mm, be padded between brick section, top surface and mould with rubber blanket or other encapsulants, then will install sample Mould be placed on shake table, stood after adding the net slurry that stirs in right amount, vibration 0.5min~1min, reach and torn open after initial set Mould；Post forming sample preparation refers to, monoblock fired common brick sample is put into the water purification of room temperature to soak and taken out after 20min~30min, Dripped 20min~30min on iron wire net rack, and the net slurry stirred in right amount is added into mould, and by monoblock sample, one is held Pressure surface is contacted with net slurry, is fitted into sampling die, then mould is placed on shake table, is stood, is reached after vibration 0.5min~1min Form removal after to initial set, obtains the screed-coat of a pressure-bearing surface, and looking for for another pressure-bearing surface of monoblock sample is completed according still further to same method It is flat；Non-forming sample preparation, which is applied to sample, need not carry out the mode of surface leveling sample preparation, by fired common brick sample from centre Two brick bats are sawn into, two brick bat cut-off ports are conversely stacked, and lamination portion cannot be less than 100mm.After the completion of prepared by sample, Sample finished product is placed in the increased pressure board center of forcing press, perpendicular to compression face, uniform and stable loading, must not impact or shake It is dynamic, with 2~6KN/s speed loading, untill sample is destroyed, record maximal destruction load P.

According to《Fired common brick》GB/T5101-2003 regulation, in the compressive strength test of brick, fired common brick with 3.5 ten thousand -15 ten thousand pieces are an inspection lot, less than 3.5 ten thousand pieces based on an inspection lot, take method of random sampling in each inspection lot Extracted in product stacks, each inspection lot extracts 10 pieces of fired common brick sample.In reality, the commonly required scale of construction of building brick compared with Greatly, it is also more according to the fired common brick sample size needed for code requirement.

For one-shot forming sample preparation and post forming sample preparation, sample finished product is an entirety, is fetched conveniently；And for it is non-into Type sample preparation, sample is stacked after blocking by fracture opposite direction, sample finished product for separation two pieces of brick bats, by sample from sample Room is carried to during compression test room, is easily occurred sample and is obscured, or the situation that the sample worked good is separated, and is being tested When, need to redistrict again, be combined into and can carry out the sample finished product of compression test, and often have a large amount of samples in testing agency Finished product needs detection, distinguishes one by one at the trial, combination extremely influences test efficiency.

Utility model content

The purpose of this utility model is to provide a kind of fired common brick resistance to compression fixture, for solving to sinter in the prior art The sample of common brick non-forming sample preparation is easily obscured, sample separation in groups, the problem of influenceing test efficiency.

The utility model is achieved through the following technical solutions：

A kind of fired common brick resistance to compression fixture, including top pressing device, jig arm, connecting plate and be placed on pressure testing machine by Pressing plate, the top pressing device includes bearing plate, pressure plare, and is fixedly connected or is integrally formed in the bearing plate and the pressure Transmission rod between plate, the connecting plate center offers the hole for accommodating the transmission rod, the connecting plate two End forms the sky for clamping sample by being symmetrically connected with prestressed articulated elements in the middle part of two jig arm, the jig arm Chamber, the upper and lower part of the jig arm is respectively arranged with integrally formed seesaw and pinch, and the seesaw is located at the articulated elements Between top, the bearing plate and pressure plare, the pinch is located at the jig arm bottom, the compression plate and two pinches Middle width is adapted.

It is preferred that, the pinch width is 5mm, and the length of the compression plate is more than 100mm, and it is common that width is slightly less than sintering The normal width 115mm of brick and the pinch gripping width are adapted.

It is preferred that, the articulated elements includes the circle opened up on the connecting plate in integrally formed pivot pin and the jig arm Hole, the pivot pin and the circular hole are adapted, and are socketed with the pivot pin with prestressed torsion spring.

It is preferred that, the length of the pressure plare is more than 100mm, and width is equal to the normal width 115mm of fired common brick.

It is preferred that, the top pressing device, jig arm, connecting plate, the material of compression plate are the cast iron through thermo-chemical treatment, and institute State pressure plare, jig arm, the surface of compression plate 4 and polish refined by grinding machine.

It is preferred that, integrally formed bearing plate upper surface is bonded with the hard rubber of shore hardness 90 on the top pressing device.

The utility model compared with prior art, with advantages below and beneficial effect：

（1）The burning of non-forming sample preparation is clamped by two jig arm being connected to prestressed articulated elements on one piece of connecting plate Common brick sample is tied, when sample is placed in into sample room shelved, the pinch of the jig arm is suppressed and with prestressing force in sample gravity Articulated elements effect under, jig arm is integrally kept upright；Opening holes are used to connect the top pressing device on the connecting plate again Transmission rod, the connecting plate can be slided on the transmission rod, it is necessary to when moving sample, lift the pressure-bearing on the top pressing device top Plate, the pressure plare of bottom contacts the connecting plate, by lifting sample with the jig arm that connecting plate is hinged, it is to avoid the sample combined Finished product is confused, upset；When being tested, directly lift bearing plate and sample is placed in the compression plate being placed on pressure testing machine On, now top pressing device and jig arm release, bearing plate contacts the seesaw of the jig arm, and pressure testing machine pushes top pressing device, the top Depressor is by pressure transmission to sample, while the pressure that seesaw is transmitted by bearing plate, the jig arm is rotated around the articulated elements, pinch Separated to both sides, jig arm leaves sample, it is to avoid jig arm produces lateral pressure to sample, it is to avoid pressure testing machine is collected most There is deviation in big pressure failing load.Both it can clamp, and not influence test data, and improve test efficiency, solve existing skill In art the sample of fired common brick non-forming sample preparation easily obscure, in groups sample separate, influence test efficiency the problem of.

（2）According to the standard size of fired common brick 240mm × 115mm × 53mm, the minimum overlapping length of sample is 100mm, sets each scantling：The length of the compression plate is more than 100mm, and width is slightly less than the normal width of fired common brick 115mm and the pinch gripping width are adapted, and the length of the pressure plare is more than 100mm, and width is equal to fired common brick Normal width 115mm, the pinch width is 5mm, the utility model is just agreed with sample, and does not influence experiment to carry out, The size of compression plate and sample difference are smaller, maximum pressure failing load are not caused a deviation.

（3）Jig arm is met the effect of clamping sample by the setting of pivot pin and prestressing force torsion spring, and do not influence examination Test precision.

（4）The material of the top pressing device, jig arm, connecting plate, compression plate is set to the cast iron through thermo-chemical treatment, due to Having carried out the cast iron of thermo-chemical treatment has good wearability, crushing resistance, high weakening, corrosion resistance and antioxygenic property, The utility model is set to meet the requirement of transmission pressure, and can be durable in use；And the pressure plare, jig arm, the surface of compression plate 4 It is refined by grinding machine polishing, reduce the abrasion to specimen surface, will not also be caused because of the surface irregularity of pressure plare 13, compression plate 4 The pressure collected is set to destroy less than normal.

（5）The hard rubber of shore hardness 90 is bonded in bearing plate upper surface, this hard rubber has high measuring body spy Property, simultaneously because the bradyseism performance that rubber has, further reduces weak impact during pressure testing machine contact bearing plate, make examination Test data as accurate as possible.

Brief description of the drawings

Fig. 1 is the utility model structural representation；

Fig. 2 is Fig. 1 right view；

Fig. 3 is Fig. 1 top view；

Fig. 4 is state diagram of the present utility model when sample is just placed on compression plate；

Fig. 5 is that sample is not affected by state diagram of the present utility model during pressure；

Fig. 6 is state diagram of the present utility model when sample is pressurized；

Fig. 7 is sample finished product schematic perspective view；

Wherein 1- top pressing devices；2- jig arm；3- connecting plates；4 compression plates；11- bearing plates；12- transmission rods；13- pressure plares； 21- seesaws；22- articulated elements；23- pinches.

Embodiment

The utility model is described in further detail with reference to embodiment, but embodiment of the present utility model is not It is limited to this.

Embodiment 1：

With reference to shown in accompanying drawing 1-3, a kind of fired common brick resistance to compression fixture, including top pressing device 1, jig arm 2, connecting plate 3 and peace The compression plate 4 on pressure testing machine is put, the top pressing device 1 includes bearing plate 11, pressure plare 13, and is fixedly connected or one The transmission rod 12 between the bearing plate 11 and the pressure plare 13 is molded over, the center of connecting plate 3, which is offered, to be used for The hole of the transmission rod 12 is accommodated, the two ends of connecting plate 3 with prestressed articulated elements 22 by being symmetrically connected with two institutes Jig arm 2 is stated, the middle part of jig arm 2 forms the cavity for clamping sample, and the upper and lower part of the jig arm 2 is respectively arranged with one Body formed seesaw 21 and pinch 23, the seesaw 21 is located at the top of articulated elements 22, the bearing plate 11 and pressure plare 13 Between, the width that the pinch 23 is located in the middle of the bottom of jig arm 2, the compression plate 4 and two pinches 23 is adapted.

Principle of the present utility model set forth further below：

Non-forming sample preparation is clamped by two jig arm 2 being connected to prestressed articulated elements 22 on one piece of connecting plate 3 Fired common brick sample, and the connecting plate 3 that center is offered into hole is connected on transmission rod 12, the connecting plate 3 can Slided on the transmission rod 12.

When sample is placed in into sample room shelved, suppress the pinch 23 in sample gravity and the band is prestressed is hinged In the presence of part 22, jig arm 2 is overall to be kept upright；When needing to move sample, lift the bearing plate 11 on the top of top pressing device 1, The pressure plare 13 of bottom contacts the connecting plate 3, lifts sample by the jig arm 2 being hinged with connecting plate 3, it is to avoid the examination combined Sample finished product is confused, upset；As shown in figs. 4 through 6, when being tested, directly lift bearing plate 11 and be placed in sample and be placed in pressure On compression plate 4 on force tester, because the width in the middle of the compression plate 4 and two pinches 23 is adapted, it will not limit The activity of pinch 23 is made, now the top pressing device 1 and jig arm 2 discharge, and the bearing plate 11 contacts the seesaw of the jig arm 2 21, pressure testing machine pushes the top pressing device 1, the top pressing device 1 by pressure transmission to sample, while the seesaw 21 is by described The pressure that bearing plate 11 is transmitted, the jig arm 2 is rotated around the articulated elements 22, the pinch 23 is separated to both sides, and jig arm 2 is left Sample, it is to avoid the jig arm 2 produces lateral pressure to sample, so that the maximum pressure destruction for avoiding pressure testing machine from collecting There is deviation in load.

Embodiment 2：

On the basis of embodiment 1, with reference to shown in accompanying drawing 1-3, according to fired common brick standard size 240mm × 115mm × 53mm, the minimum overlapping length of sample is 100mm, further carries out the restriction of size, the width of pinch 23 is 5mm, the length of the compression plate 4 is more than 100mm, and width is slightly less than the normal width 115mm and the pinch of fired common brick 23 gripping widths are adapted, and the utility model is just agreed with sample when clamping, and do not influence experiment to carry out, and because are pressurized The size of plate 4 and the size difference of sample compression face are smaller, maximum pressure failing load are not caused a deviation.

Further, the length of the pressure plare 13 is more than 100mm, and width is equal to the normal width of fired common brick 115mm, the size and the size of sample compression face of the pressure plare 13 is of substantially equal, pressure energy is uniformly passed by pressure plare 13 It is delivered on sample.

Further, the articulated elements 22 includes opening up in integrally formed pivot pin and the jig arm 2 on the connecting plate 3 Circular hole, the pivot pin and the circular hole are adapted, are socketed with the pivot pin with prestressed torsion spring.The jig arm 2 is in band Prestressed torsion spring effect is lower to be clamped, and is met the effect of clamping sample, while jig arm 2 can be flared out when being pressurized, is not influenceed Test data.

Embodiment 3：

On the basis of embodiment 1 or 2, with reference to shown in accompanying drawing 1-3, the top pressing device 1, jig arm 2, connecting plate 3, compression plate 4 material is the cast iron through thermo-chemical treatment, and essence is polished in the surface of the pressure plare 13, jig arm 2, compression plate 4 by grinding machine System.Because the cast iron for carrying out thermo-chemical treatment has good wearability, crushing resistance, high weakening, corrosion resistance and antioxygen Change performance, the utility model is met the requirement of transmission pressure, and can be durable in use；The pressure plare 13, jig arm 2, compression The surface of plate 4 polishes refined by grinding machine, reduces the abrasion to specimen surface, also will not because of pressure plare 13, compression plate 4 surface Out-of-flatness causes the pressure collected to destroy less than normal.

Further, the integrally formed upper surface of bearing plate 11 is bonded with the hard plastic of shore hardness 90 on the top pressing device 1 Rubber.This hard rubber has high measuring body characteristic, simultaneously because the bradyseism performance that rubber has, further reduces pressure examination Weak impact during machine contact bearing plate 11 is tested, makes test data as accurate as possible.

It is described above, only it is preferred embodiment of the present utility model, any formal limit is not done to the utility model System, every any simple modification made according to technical spirit of the present utility model to above example, equivalent variations are each fallen within Within protection domain of the present utility model.

Claims (6)

1. a kind of fired common brick resistance to compression fixture, it is characterised in that including top pressing device（1）, jig arm（2）, connecting plate（3）And placement Compression plate on pressure testing machine（4）, the top pressing device（1）Including bearing plate（11）, pressure plare（13）, and be fixedly connected Or be integrally formed in the bearing plate（11）With the pressure plare（13）Between transmission rod（12）, the connecting plate（3）Center Position is offered for accommodating the transmission rod（12）Hole, the connecting plate（3）Two ends pass through with prestressed articulated elements （22）It is symmetrically connected with two jig arm（2）, the jig arm（2）Middle part forms the cavity for clamping sample, the jig arm （2）Upper and lower part be respectively arranged with integrally formed seesaw（21）And pinch（23）, the seesaw（21）Positioned at the hinge Fitting（22）Top, the bearing plate（11）And pressure plare（13）Between, the pinch（23）Positioned at the jig arm（2）Bottom, The compression plate（4）With two pinches（23）Middle width is adapted.

2. a kind of fired common brick resistance to compression fixture according to claim 1, it is characterised in that the pinch（23）Width is 5mm, the compression plate（4）Length be more than 100mm, width be slightly less than fired common brick normal width 115mm, with the folder Pin（23）Gripping width is adapted.

3. a kind of fired common brick resistance to compression fixture according to claim 1 or 2, it is characterised in that the articulated elements（22） Including the connecting plate（3）Upper integrally formed pivot pin and the jig arm（2）On the circular hole that opens up, the pivot pin and the circular hole It is adapted, is socketed with the pivot pin with prestressed torsion spring.

4. a kind of fired common brick resistance to compression fixture according to claim 3, it is characterised in that the pressure plare（13）Length Degree is more than 100mm, and width is equal to the normal width 115mm of fired common brick.

5. a kind of fired common brick resistance to compression fixture according to claim 4, it is characterised in that the top pressing device（1）, jig arm （2）, connecting plate（3）, compression plate（4）Material be the cast iron through thermo-chemical treatment, and the pressure plare（13）, jig arm（2）、 Polish refined by grinding machine in the surface of compression plate 4.

6. a kind of fired common brick resistance to compression fixture according to any one of claim 1,2,4,5, it is characterised in that described Top pressing device（1）Upper integrally formed bearing plate（11）Upper surface is bonded with the hard rubber of shore hardness 90.