CN207570915U - Tensile deformation test device and its deformation-sensor fixture in concrete sample high temperature - Google Patents
Tensile deformation test device and its deformation-sensor fixture in concrete sample high temperature Download PDFInfo
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- CN207570915U CN207570915U CN201721617239.9U CN201721617239U CN207570915U CN 207570915 U CN207570915 U CN 207570915U CN 201721617239 U CN201721617239 U CN 201721617239U CN 207570915 U CN207570915 U CN 207570915U
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Abstract
The utility model is related to tensile deformation test device in concrete sample high temperature and its deformation-sensor fixtures, wherein, deformation-sensor fixture, fixed seat including arc-shaped elastic component, set on elastic component both ends, the measuring rod set on fixed seat outer end, the measuring rod has for stretching into the fire resisting measurement end in fire disaster simulation stove, and the side of the fixed seat is both provided with is used to clamp deformation-sensor, band top plate supporting rod or locating rod ferrule with trip bolt；Tensile deformation test device in concrete sample high temperature, the deformation-sensor fixture including at least two above structures.The utility model solves the problems, such as that deformation-sensor can not directly test deflection in concrete sample high temperature.
Description
Technical field
The utility model is related to the deformation-sensor fixture in mechanical performance of concrete experimental test field and use the folder
Tensile deformation test device in the concrete sample high temperature of tool.
Background technology
With the rapid development of skyscraper, fire problem becomes increasingly conspicuous.In skyscraper, reinforced concrete structure accounts for
More than 90%.A series of variations will occur concrete as primary structural material for mechanical property in high temperature of fire and after high temperature,
Such as intensity and elasticity modulus decline, deformation increases.And load-bearing and support system as building, structure must be certain
Enough bearing capacities are kept in period, so that disaster affected people safely evacuates, fire fighter is put out a fire and given first aid to casualty etc..
Therefore, fire prevention and control to be effectively performed in terms of Security design of architecture, must just further investigate the structures such as Concrete Subjected To Fire
The performance degradation rule of material, this be not only to concrete structure and its material under fire service ability carry out Scientific evaluation and
It the leading indicator of performance study and establishes concrete structure fire resistant design method and establishes the damages of concrete structures that overdoes and comment
Estimate and strain-responsive under high temperature and tension stress coupling of the important evidence of restoring and fastening method, particularly concrete and
Failure mechanism for improving concrete fire-resistance design theory, is established a set of concrete structure fire-resistance rationally, conveniently with practicality and is set
Meter method has important theory significance and application value.And to obtain the accurate examination of concrete material deformational behavior at high temperature
Testing data is difficult, and existing test equipment and device can not be subjected to the direct effect of high temperature of fire, also can not just measure mixed
Deformation values of the solidifying soil test specimen in high temperature, such as apply it is entitled " concrete direct tensile test test specimen, specimen molding mold and into
Covering device ", Publication No. CN106018044A Chinese patent in disclose and a kind of direct tensile test carried out to concrete
Although device, the device solve the problems, such as the uniaxial direct tensile and deformation test of concrete sample under normal temperature condition, but in the device
Deformation-sensor equally cannot be used directly for test high temperature in test piece deformation value.For this purpose, to understand concrete in high temperature
The information of lower deformational behavior must just develop applicable novel test device.
Utility model content
The purpose of this utility model is to provide a kind of deformation-sensor fixtures, in the prior art can not be directly sharp with solution
The problem of Analysis of Concrete Tensile deforms in high temperature is measured with deformation-sensor；The purpose of this utility model, which also resides in, provides a kind of use
Tensile deformation test device in the concrete sample high temperature of the deformation-sensor fixture.
In order to solve the above technical problems, the technical solution of deformation-sensor fixture is as follows in the utility model：
Deformation-sensor fixture, including arc-shaped elastic component, set on the fixed seat at elastic component both ends, outside fixed seat
The measuring rod at end, the measuring rod have for stretching into the fire resisting measurement end in fire disaster simulation stove, and the side of the fixed seat is equal
It is provided with and is used to clamp deformation-sensor, band top plate supporting rod or locating rod ferrule with trip bolt.
Preferably, the measuring rod include set on fixed seat outer end main limb and on the main limb by fire proofed wood
Fire resisting made of material is followed closely.
Preferably, the main limb includes the rectangular section being connect with the outer end of fixed seat section and by baffle ring and institute
The cylindrical cross-section section of rectangular section section connection is stated, two lock pins are respectively provided on two measuring rods, is the first lock close to fixed seat
Pin, another is the second lock pin, and the main limb rectangular section section of another measuring rod opposite with the first lock pin and the second lock pin is provided with
First lockpin hole and the second lockpin hole, lock pin can be pierced by and retract in lockpin hole；The cylindrical cross-section section of the main limb of measuring rod
It is arranged with and disengages spring and sleeve, disengage spring one end and connect with baffle ring, the other end is arranged in sleeve simultaneously and sleeve connection, de-
Opening the movable device of spring and sleeve composition can slide along the cylindrical cross-section section of main limb；It is surveyed where each sleeve to respective sleeve
The second lockpin hole direction on gauge rod is provided with the sleeve hanging buckle passed through for the second lock pin on another measuring rod, the main limb of measuring rod
On be provided with the hook passed through for the first lock pin on another measuring rod, the hook is for connecting limit spring, the measuring rod
The hanging hole for connecting limit spring is provided on main limb.
Preferably, the end of the cylindrical cross-section section is clamped and connected fire resisting nail, the end of the cylindrical cross-section section
Radially setting can reduce the insulation hole of heat transfer in portion.
The main limb respectively stretches out a trigger limb in opposite directions, and two lock pins are arranged on corresponding described by the trigger limb
On measuring rod.
The technical solution of tensile deformation test device is in concrete sample high temperature in the utility model：
Tensile deformation test device in concrete sample high temperature, the deformation-sensor folder including at least two above structures
Tool.
Preferably, two ferrules of the deformation-sensor fixture clamp deformation-sensor and are clamped with top plate respectively
Bar.
Preferably, two clamping two identical locating rods of hoop clamp of the deformation-sensor fixture, the locating rod
On be all provided with edge of a knife card slot, the blade of two measuring rod ends of extensometer is plugged in the corresponding edge of a knife card slot.
Preferably, fire disaster simulation stove both sides are inserted in there are two the deformation-sensor fixtures, respectively, outside fire disaster simulation stove
Side sets eight pulleys, and four limit springs connect the deformation of fire disaster simulation stove both sides by four groups of hanging holes with hook respectively
Clamp of sensor.
The beneficial effects of the utility model are：In use, it is fixed to deformation biography by deformation-sensor and with top plate supporting rod
In the fixed seat of sensor fixture, then the fire resisting measurement end of deformation-sensor fixture is inserted into fire disaster simulation stove, works as concrete
Two measuring rods of deformation-sensor fixture is driven to do relative motion when test specimen is stretched, and then drive deformation-sensor and top plate
Do the relative motion with linear change, the test piece deformation amount in such fire disaster simulation stove after high temperature and load coupling is just
The deformation-sensor outside stove is passed to by deformation-sensor fixture, concrete examination can not directly be tested by solving deformation-sensor
The problem of deflection in part high temperature.
Further, the structure of deformation-sensor fixture causes the fire resisting of deformation-sensor fixture is followed closely to be inserted into fire disaster simulation stove
Afterwards, by the way that fire resisting screw top is against on concrete sample by the position-limit mechanism that limit spring, hook and hanging hole etc. form, work as high temperature
Middle concrete sample deformation values beyond deformation-sensor range or concrete sample be broken when, the first lock pin extension is firm
It is retracted into lockpin hole well, makes to be connected with the hook release of limit spring, the second lock pin extension is also just retracted into lock pin
Discharge sleeve hanging buckle in hole, the disengagement spring band moving sleeve bullet compressed in sleeve passes deformation to the housing of fire disaster simulation stove
Sensor fixture disengages test specimen, is hung by the lock pin on deformation-sensor fixture trigger limb, the lockpin hole on measuring rod, hook, sleeve
The overtravel protection mechanism of the compositions such as button and limit spring plays a role, and deformation-sensor and deformation-sensor fixture is protected not to be broken
It is bad.
Further, the end of cylindrical cross-section section is clamped and connected fire resisting nail, can replace damage in time as needed
Bad fire resisting is followed closely, and radially setting can reduce the insulation hole of heat transfer for the end of cylindrical cross-section section, reduce the width that heat transmits backward
Degree further protects deformation-sensor fixture and deformation-sensor.
It should be noted that tensile deformation test device is applicable not only to test concrete in fire in concrete sample high temperature
Calamity and the lower deformational behavior for destroying whole process of tensile load effect, are also applied for test concrete and make in fire and constant tensile load
It creeps under behavior.
Description of the drawings
Fig. 1 is the usage state diagram of tensile deformation test device in 1 concrete sample high temperature of embodiment in the utility model；
Fig. 2 is the cooperation schematic diagram of deformation-sensor fixture and deformation-sensor in Fig. 1；
Fig. 3 is the vertical view of Fig. 2；
Fig. 4 is the cooperation schematic diagram of tensile deformation test device and fire disaster simulation stove in concrete sample high temperature in Fig. 1；
Fig. 5 is the structure diagram of concrete sample in Fig. 1；
Fig. 6 is the vertical view of Fig. 5；
Fig. 7 is the structure diagram of upper clamping fixture in Fig. 1；
Fig. 8 is the vertical view of Fig. 7；
Fig. 9 is the structure diagram of fire disaster simulation stove in Fig. 1；
Figure 10 is the side view of Fig. 9；
Figure 11 is the vertical view of Fig. 9；
Figure 12 is the cooperation schematic diagram of deformation-sensor fixture and deformation-sensor in embodiment 2.
Specific embodiment
Embodiment 1
Tensile deformation test device is as shown in Fig. 1 ~ 11 in the concrete sample high temperature of the present embodiment.Concrete sample high temperature
Middle tensile deformation test device includes being divided into the deformation-sensor fixture 14 of fire disaster simulation stove both sides, deformation biography during a pair of use
Sensor 12, band top plate supporting rod 13, pulley E10, limit spring B1 (B1 ') and limit spring B4 (B4 ') etc..
Deformation-sensor fixture includes the elastic component A1 of arcuate structure, and elastic component A1's is respectively provided with fixed seat, a fixation
Deformation-sensor 12 is set on seat, and setting band top plate supporting rod 13 in another fixed seat, fixed seat is logical in the present embodiment
The ferrule A3 of screw A2 lockings is crossed, the measure-ball of deformation-sensor is withstood on top plate.There are two measuring rods, that is, is set to band
The first measuring rod 15 in the fixed seat of deformation-sensor, be set in the fixed seat with top plate supporting rod with the first measuring rod
15 corresponding second measuring rods 16, each measuring rod include the fire resisting nail set on the main limb A4 of fixed seat outer end and on main limb
A17, the fire resisting measurement end of measuring rod are followed closely for fire resisting, and fire resisting nail A17 is made of refractory material.Main limb A4 includes and fixed seat
Outer end connection rectangular section section and by baffle ring and the cylindrical cross-section section that connect of rectangular section section, fire resisting follow closely A17 and
The clamping of cylindrical cross-section section is connected, and sets insulation hole A16 at cylindrical cross-section section clamping fire resisting nail, insulation hole A16 is along cylinder
The end of section is radially set, for reducing heat transfer to the adverse effect of deformation-sensor fixture 14.A17 and examination are followed closely in fire resisting
One end end that part 6 contacts is taper（Or blade-like）, slipped for being accurately positioned and preventing.The main limb A4 of each measuring rod is opposite
Respectively stretch out a trigger limb A15, the end of each trigger limb separates two lock pins, and two lock pins on the first measuring rod 15 claim
For first the first lock pin of measuring rod and first the second lock pin of measuring rod, two lock pins on the second measuring rod are known as the second measuring rod
First lock pin A7 and second the second lock pin of measuring rod A10 is both provided with for corresponding lock in the rectangular section section of each main limb of measuring rod
The lockpin hole that is pierced by is sold, what it is corresponding to 15 first lock pin of the first measuring rod and the second lock pin is the first lock pin on the second measuring rod
Hole and the second lockpin hole, corresponding to second measuring rod the first lock pin A7 and the second lock pin A10 be on the first measuring rod first
Lockpin hole A8 and the second lockpin hole A11.First lock pin of the first measuring rod 15 can on the second measuring rod corresponding first lock pin
It is extended and retracted in hole and the grab A6 that connect of limit spring B1 with being set on rear side of lower section is used cooperatively, the first measuring rod 15 the
Two lock pins can be extended and retracted in corresponding second lockpin hole A11 ' on the second measuring rod 16 and with the set of the second measuring rod 16
Cylinder buckle A9 is used cooperatively, and first is arranged in the cylindrical cross-section section adjacent with the second lockpin hole A11 on the first measuring rod 15
Rod sleeve A14 is measured, the second measurement rod set is arranged in the second measuring rod 16 cylindrical cross-section section adjacent with trigger limb A15
Cylinder.The cylindrical cross-section section of measuring rod, which is arranged, disengages spring A13, and the disengagement spring is arranged in the sleeve, one end and set
Cylinder connection, the other end are fixed on baffle ring A12, and baffle ring A12 is circular collar.It is all provided on the measuring rod of each deformation-sensor fixture
Limit spring connection structure is equipped with, limit spring connection structure is spring hanging hole A5 in the present embodiment, and left side deformation-sensor presss from both sides
One end of hanging hole A5 the first limit springs of connection B1 of upper first measuring rod of tool, the first limit spring B1 are taken across fire disaster simulation stove
In the limiting slot of two pulley E10 of 5 back upper places, the other end is stuck in right side deformation-sensor fixture the by the grab A6 of connection
On first lock pin A7 of two measuring rod trigger limbs；The hanging hole A5 connections second of the first measuring rod limit on the deformation-sensor fixture of right side
One end of position spring B 4, the second limit spring B4 are taken across in the limiting slot of two pulley E10 of 5 front upper place of fire disaster simulation stove,
The other end is stuck in by the grab A6 of connection on the first lock pin A7 of left side deformation-sensor fixture the second measuring rod trigger limb.It is left
Right two the second measuring rods of deformation-sensor fixture are also by front and rear two limit springs（B1 ' and B4 '）With two sets of hanging hole hooks
Structure is attached.Four limit springs are used cooperatively, and are used to control during deformation test in concrete sample high temperature
The measuring rod of two deformation-sensor fixtures is clamped on test specimen always, and harmonious with test piece deformation.
Operation principle such as Fig. 1 of tensile deformation test device in the concrete sample high temperature.It is drawn in concrete sample high temperature
Deformation test device is stretched in concrete sample high temperature pulling test device, concrete sample high temperature pulling test device to include
It stretches and becomes in tensioning system, cooling system, fire disaster simulation system, control and data collecting system and the concrete sample high temperature
Shape test device.
The tensioning system includes load bar 1, load transducer 2, flexural pivot connecting rod 3, clamping fixture 4 etc..
Test specimen 6 uses " I " character form structure, is divided into from middle part to both ends by fiery section C1, power transmission section C2 and stand under load section C3,
Included test section C0 by fiery section C1.The fire effect being subjected to by fiery section C1 for simulation；Test section C0 is also predetermined Fault Segment, is used
In the test of intensity and deformation performance；Power transmission section is used to provide enough spaces for test operation；Stand under load section C3 is used for stretching force
Application.To avoid the stress concentration at variable cross-section, adopted between test section C0 and power transmission section C2, power transmission section C2 and stand under load section C3
The cambered surface transition for being R with radius.Destruction to ensure test specimen is happened at the test section C0 of section minimum, and the section of test specimen is from test
The 2R of section C0 is gradually increased to the 4R of stand under load section C3.Length, width and the thickness of the test section C0 is equal to 2R, and for just
In test specimen moulding by casting, each section of thickness is equal to 2R.Stand under load section C3 close to the cambered surface transition position of power transmission section C2 be provided with
Test specimen is axially in 45 degree of angles by section.
Clamping fixture 4 uses in pairs, and the stand under load section C3 for clamping test specimen 6 respectively forms stretching force.Clamping fixture is according to examination
The structure type and dimensioned of 6 end of part form, and girder D1, scapulet D4, card beam D5 are connected into overall structure by backboard D3,
Centre forms the square tapered opening card slot that can be clamped to test specimen 6, is installed for ease of test specimen, side's tapered opening card slot
Size is more than the stand under load section C3 of test specimen 6.Girder center is provided with flexural pivot nest D2, flexural pivot nest and flexural pivot connecting rod 3 by the side of test specimen 6
Form spherical pair.The flexural pivot nest center line formed after the medial surface of card beam D5 and two 4 clamping test pieces 6 of clamping fixture is in 45 degree
Angle, and the loading surface for clamping card beam D5 should be bonded completely with test specimen 6 by section.One clamping fixture 4 passes through ball during use
Hinge bar 3 is connect with load transducer 2, and load transducer 2 is connected again by the jaw or tensioning interface of load bar 1 and testing machine
It connects, another clamping fixture 4 connect completion directly by flexural pivot connecting rod 3 to test specimen 6 with the jaw or tensioning interface of testing machine
Tensioning.Test specimen making mold should be complete with the loading surface inclination angle of loads fixture card beam D5 by section corresponding test specimen stand under load section C3's
Unanimously.The consistency of the setting of spherical pair and test specimen and loads fixture contact surface can ensure test specimen not to be caused to become in tensioning test specimen
Moment of flexure, torque and stress concentration are generated at section, improves success of the test rate.The card beam D5 and backboard D3 being in direct contact with test specimen 6
The interconnected water-circulating pipe D6 of middle setting, the water-circulating pipe are provided with inlet and outlet.
The cooling system includes water cooling unit 9, outlet pipe 10 and return pipe 11 etc..Cooling-water machine 9 is by outlet pipe 10 and returns
Water pipe 11 connects the inlet and outlet of water-circulating pipe D6 in clamping fixture 4.Be in the water cooling unit be integrated with including water pump,
The air cooling refrigeration machine of the components such as water tank, evaporator, compressor, pressure controller, filter, liquid storage device, condenser, fan.
Water pump is connect with outlet pipe 10, and set temperature sensor in return pipe 11, temperature sensor is connected by signal wire and controller 8
It connects.The water pump is variable ratio frequency changer centrifugal pump, when the return water temperature of measurement is less than set temperature, water pump with low-frequency operation, when higher than
Set temperature increases water pump operation frequency gradually, when water pump operation frequency reaches capacity or temperature adds bandwidth higher than set temperature
When, start water cooling unit 9, in test rigidity is unaffected to ensure clamping fixture 4.
The fire disaster simulation system includes fire disaster simulation stove 5 and its supporting mechanism etc..Fire disaster simulation stove is big by two grades
Semi-square cylindrical shell be formed by connecting by hinge E6 and lockset E11, two semi-square cylindrical shell symmetrical configurations, by shell E1
Skeleton is gone along with sb. to guard him in formation, and shell is made of stainless steel.Two semi-square cylindrical shells are linked to be hollow space after whole fire disaster simulation stove 5
Form burner hearth E5.Thermal insulation layer E2, insulating layer E3 and fire disaster simulation chamber are set gradually between the shell E1 of fire disaster simulation stove and burner hearth E5
E4.Thermal insulation layer is made of heat-resisting heat-barrier material, and nanoporous aerogel composite adiabatic felt can be used, for preventing scattering and disappearing for heat.It protects
The preparation of inorganic refractory thermal insulation material, such as mineral wool, rock wool, mineral wool, aluminium silicate wool, ceramic fibre can be used in warm layer, is used for
Insulation.Fire disaster simulation cavity wall is made of refractory material, heating pipe built-in E9, and simulation generation fire, heating tube passes through conducting wire
It is connect with controller.To measure the temperature in burner hearth E5, multiple temperature sensor E8 are symmetrically positioned about in burner hearth E5, temperature passes
Sensor peripheral hardware protection pipe, temperature sensor are connect by conducting wire with controller 8.The joint face of two semi-square cylindrical shells forms
One layer of high temperature resistant blanket of edge patch on seam E7, seam E7 face, prevents scattering and disappearing for heat in hot test.The middle part of seam E7 is expanded
Big to form deformation measurement seam E12, the size of the deformation measurement seam should meet need of the deformation-sensor fixture 14 to working space
It will.The lateral cross section shape of burner hearth is rectangle, and size is slightly larger than the power transmission section C2 of test specimen 6, and longitudinal length is with test specimen by fiery section
The length of C1 is suitable or bigger, and such structure type not only guarantees to meet test requirements document, is also more conducive to test specimen by fiery section
C1 applies the fire effect of simulation.Supporting mechanism is a set of movable device being made of shaft E13 and connecting rod E14 etc., connecting rod E14
One end be fixed on the shell E1 of 5 halfbody of fire disaster simulation stove, the other end is fixed on the bearing of shaft E13, and shaft E13 passes through
Bearing and another connecting rod E15 are connected with applying the experiment machine frame of tensile load to test specimen 6, and fire is driven by connecting rod E14
Displacement to fire disaster simulation stove 5 is realized in the rotation for simulating the E13 around the shaft of stove 5.When needing to carry out fire smoldering test to test specimen,
E13 rotates fire disaster simulation stove 5 towards test specimen 6 by fiery section C1 around the shaft, and two half-shells of fire disaster simulation stove 5 are opened along hinge E6
Body, make burner hearth E5 just surround test specimen 6 by fiery section C1, with lockset E11 locking fire disaster simulations stove 5, by burner hearth and test specimen
The fire effect of simulation can be applied after the closing of contact site fire resisting blanket to test specimen according to the program of setting.With hinge E6 and
The adjacent outer wall corner of shell E1 where lockset E11 and level, which correspond at deformation measurement seam E12, is respectively provided with two sets of cunnings up and down
E10 is taken turns, pulley blocks are used to support the first limit spring B1 (B1 ') and the second limit spring B4, and avoid to deformation measurement value band
Carry out error.
Control and data collecting system are by load transducer 2, manipulation screen 7, controller 8, deformation-sensor 13, temperature sensing
The compositions such as device E8.Controller passes through cable and load transducer 2, deformation-sensor 13, manipulation screen 7, cooling-water machine 9, fire respectively
Simulation stove 5 and testing machine etc. are connected.It is realized by program and manipulation screen 7 to tensile load, fire disaster simulation in-furnace temperature, cold water
The control of machine etc. and the acquisition to parameters such as tensile load, test piece deformation, temperature.
When testing test piece deformation, two deformation-sensors are used cooperatively in pairs, are pressed from both sides by deformation-sensor 12 and with top plate
Bar 13 is held on the deformation-sensor fixture, adjustment deformation-sensor is in testing range, by the deformation-sensor
The fire resisting nail A17 of fixture is clamped on the test section C0 of test specimen 6, and one end of limit spring B1 is articulated in a set of deformation-sensor
On the hanging hole A5 of fixture 14, limit spring is stuck in separately around the pulley blocks E10 on fire disaster simulation stove 5, other end mounting hook A6
On a set of the first lock pin of deformation-sensor fixture A7, another limit spring B4 is completed into same connection, then complete second group
The connection of B1 ' and B4 '.Under the coupling of fire and load, deformation-sensor fixture 14 can be synchronous with test specimen test section C0
It deforms and deformation values is passed into deformation-sensor 12, the first measuring rod, the second measuring rod start, in splayed, to work as test piece deformation
When no to scale or test specimen are broken, fire resisting nail finally makes the sponson of trigger limb girdle pendulum lock pin sum return to lock by displacement transfer
Pin hole is in, and hook A6 and sleeve hanging buckle A9 are disengaged with lock pin, the deformation-sensor fixture 14 under the action of spring A13 is disengaged
It is disengaged from test specimen 6, a kind of protection is respectively formed to deformation-sensor fixture 14 and deformation-sensor 12.
It will be to the concrete sample high temperature of 12 grade compositions of deformation-sensor fixture 14 and deformation-sensor before deformation test
The precision of middle tensile deformation test device carries out integral calibrating.
Embodiment 2
As different from Example 1, the needs of cassette extensometer, deformation-sensor fixture are used to meet deformation-sensor
14 ferrule A3 is used to clamping position bar 18, and the positioning boom end is both provided with and 17 matched edge of a knife card of extensometer
Slot 19.The edge of a knife of the positioning blade of 17 two measuring rod front ends of extensometer is stuck in the card slot during use, as shown in figure 12.
In the other embodiments of the utility model：Foil gauge can also be pasted on elastic component to replace deformation-sensor；
Two deformation-sensor fixtures can not also share limit spring, such as corresponding measuring rod is directly connected by limit spring
In on fire disaster simulation stove；The first lock pin, the second lock pin on each measuring rod can also be connected directly between on corresponding main limb.
Claims (9)
1. deformation-sensor fixture, it is characterised in that：Including arc-shaped elastic component, set on elastic component both ends fixed seat, set
Measuring rod in fixed seat outer end, the measuring rod have to stretch into the fire resisting measurement end in fire disaster simulation stove, the fixation
The side of seat is both provided with is used to clamp deformation-sensor, band top plate supporting rod or locating rod ferrule with trip bolt.
2. deformation-sensor fixture according to claim 1, spy are：The measuring rod includes being set on fixed seat outer end
Main limb and on the main limb the fire resisting made of refractory material nail.
3. deformation-sensor fixture according to claim 2, it is characterised in that：The main limb includes and the fixed seat
The rectangular section section of outer end connection and the cylindrical cross-section section being connect by baffle ring and the rectangular section section, on two measuring rods
Two lock pins are respectively provided with, are the first lock pin close to fixed seat, another is the second lock pin, with the first lock pin and the second lock pin phase
To another measuring rod main limb rectangular section section be provided with the first lockpin hole and the second lockpin hole, lock pin can be worn in lockpin hole
Go out and retract；The cylindrical cross-section section of the main limb of measuring rod, which is arranged with, disengages spring and sleeve, disengages spring one end and is connect with baffle ring,
The other end is arranged in sleeve and can be cut with sleeve connection, the movable device that disengagement spring and sleeve form along the cylinder of main limb
Face section is slided；Second lockpin hole direction of each sleeve on measuring rod where respective sleeve is provided on another measuring rod
The sleeve hanging buckle that second lock pin passes through is provided with the hook passed through for the first lock pin on another measuring rod, institute on the main limb of measuring rod
Hook is stated for connecting limit spring, the hanging hole for connecting limit spring is provided on the main limb of measuring rod.
4. deformation-sensor fixture according to claim 3, it is characterised in that：The end clamping of the cylindrical cross-section section
The fire resisting nail is connected, radially setting can reduce the insulation hole of heat transfer for the end of the cylindrical cross-section section.
5. deformation-sensor fixture according to claim 3, it is characterised in that：The main limb respectively stretches out a trigger in opposite directions
Limb, two lock pins are arranged on by the trigger limb on the corresponding measuring rod.
6. tensile deformation test device in concrete sample high temperature, it is characterised in that：Appoint including at least two such as claim 1-5
Deformation-sensor fixture described in meaning one.
7. tensile deformation test device in concrete sample high temperature according to claim 6, it is characterised in that：The deformation
Two ferrules of clamp of sensor clamp deformation-sensor and with top plate supporting rod respectively.
8. tensile deformation test device in concrete sample high temperature according to claim 6, it is characterised in that：The deformation
Two of clamp of sensor clamp two identical locating rods of hoop clamp, and edge of a knife card slot, extensometer two are all provided in the locating rod
The blade of a measuring rod end is plugged in the corresponding edge of a knife card slot.
9. tensile deformation test device in the concrete sample high temperature according to 7 or 8 any one of claim, feature exist
In：There are two the deformation-sensor fixtures, is inserted in fire disaster simulation stove both sides respectively, eight cunnings are set on the outside of fire disaster simulation stove
Wheel, four limit springs connect the deformation-sensor fixture of fire disaster simulation stove both sides by four groups of hanging holes with hook respectively.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201721617239.9U CN207570915U (en) | 2017-11-28 | 2017-11-28 | Tensile deformation test device and its deformation-sensor fixture in concrete sample high temperature |
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| CN201721617239.9U CN207570915U (en) | 2017-11-28 | 2017-11-28 | Tensile deformation test device and its deformation-sensor fixture in concrete sample high temperature |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107764649A (en) * | 2017-11-28 | 2018-03-06 | 郑州大学 | Tensile deformation test device and its deformation-sensor fixture in concrete sample high temperature |
| RU211657U1 (en) * | 2021-10-12 | 2022-06-16 | Федеральное государственное бюджетное учреждение "Новосибирский научно-исследовательский институт травматологии и ортопедии им. Я.Л. Цивьяна" Министерства здравоохранения Российской Федерации (ФГБУ "ННИИТО им Я.Л. Цивьяна" Минздрава России) | CLAMPING DEVICE FOR MECHANICAL TESTING OF MEDICAL AND BIOLOGICAL MATERIALS AND BIOLOGICAL TISSUE SAMPLES |
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2017
- 2017-11-28 CN CN201721617239.9U patent/CN207570915U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107764649A (en) * | 2017-11-28 | 2018-03-06 | 郑州大学 | Tensile deformation test device and its deformation-sensor fixture in concrete sample high temperature |
| CN107764649B (en) * | 2017-11-28 | 2024-01-30 | 郑州大学 | Tensile deformation testing device for concrete test piece at high temperature and deformation sensor clamp thereof |
| RU211657U1 (en) * | 2021-10-12 | 2022-06-16 | Федеральное государственное бюджетное учреждение "Новосибирский научно-исследовательский институт травматологии и ортопедии им. Я.Л. Цивьяна" Министерства здравоохранения Российской Федерации (ФГБУ "ННИИТО им Я.Л. Цивьяна" Минздрава России) | CLAMPING DEVICE FOR MECHANICAL TESTING OF MEDICAL AND BIOLOGICAL MATERIALS AND BIOLOGICAL TISSUE SAMPLES |
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