CN113092683A - High-temperature piezoelectric measuring device - Google Patents
High-temperature piezoelectric measuring device Download PDFInfo
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- CN113092683A CN113092683A CN202110367734.3A CN202110367734A CN113092683A CN 113092683 A CN113092683 A CN 113092683A CN 202110367734 A CN202110367734 A CN 202110367734A CN 113092683 A CN113092683 A CN 113092683A
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- 238000010438 heat treatment Methods 0.000 claims abstract description 63
- 238000012360 testing method Methods 0.000 claims abstract description 35
- 230000017525 heat dissipation Effects 0.000 claims description 16
- 238000005259 measurement Methods 0.000 claims description 4
- 238000009529 body temperature measurement Methods 0.000 claims 1
- 239000000463 material Substances 0.000 abstract description 10
- 238000001816 cooling Methods 0.000 description 15
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 6
- 229910052802 copper Inorganic materials 0.000 description 6
- 239000010949 copper Substances 0.000 description 6
- 230000008878 coupling Effects 0.000 description 5
- 238000010168 coupling process Methods 0.000 description 5
- 238000005859 coupling reaction Methods 0.000 description 5
- 238000009413 insulation Methods 0.000 description 4
- 239000000919 ceramic Substances 0.000 description 2
- 229910052581 Si3N4 Inorganic materials 0.000 description 1
- 230000004308 accommodation Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 239000011159 matrix material Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012856 packing Methods 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- HQVNEWCFYHHQES-UHFFFAOYSA-N silicon nitride Chemical compound N12[Si]34N5[Si]62N3[Si]51N64 HQVNEWCFYHHQES-UHFFFAOYSA-N 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N33/00—Investigating or analysing materials by specific methods not covered by groups G01N1/00 - G01N31/00
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Abstract
The invention discloses a high-temperature piezoelectric measuring device which comprises a supporting component, a force application component, a pressing component and a heating component, wherein the force application component is connected to the supporting component and used for applying alternating force to a test sample; the pressing component is connected with the supporting component and is used for pressing the test sample to the force application component; the heating assembly is used for heating the test sample. The invention can test the behavior and rule of the piezoelectric property of the piezoelectric material along with the evolution of the temperature.
Description
Technical Field
The invention relates to the technical field of piezoelectric measurement, in particular to a high-temperature piezoelectric measuring device.
Background
The temperature stability of the piezoelectric material is a key factor for determining the working reliability and the service life of key piezoelectric devices such as piezoelectric sensors, drivers and transducers in a high-temperature service environment.
In order to improve the stability and reliability of the piezoelectric material and the device in high-temperature environment, the behavior and the law of the piezoelectric property of the piezoelectric material along with the evolution of the temperature need to be developed, but the current piezoelectric property tests are all performed in room-temperature environment, so that the measurement parameters are limited in the room-temperature environment, and a device for testing the behavior and the law of the piezoelectric property of the piezoelectric material along with the evolution of the temperature at high temperature is lacked.
Disclosure of Invention
In view of this, there is a need to provide a high-temperature piezoelectric measurement apparatus, which solves the technical problem in the prior art that there is no apparatus for measuring the evolution behavior and rule of piezoelectric property of piezoelectric material with temperature at high temperature.
In order to achieve the above technical object, a technical solution of the present invention provides a high temperature piezoelectric measuring device, including:
a support assembly;
the force application assembly is connected to the support assembly and is used for applying alternating force to the test sample;
the pressing component is connected to the supporting component and is used for pressing the sample to be tested on the force application end of the force application component;
a heating assembly for heating the test sample.
Furthermore, the high-temperature piezoelectric measuring device further comprises a first connecting assembly and a second connecting assembly, the first connecting assembly is connected to the force application end of the force application assembly, the pressing assembly is connected to the second connecting assembly and used for driving the pressing assembly to press the test sample to the first connecting assembly, and the heating assembly is slidably sleeved on the first connecting assembly and the second connecting assembly.
Furthermore, the high-temperature piezoelectric measuring device further comprises a linear moving assembly, wherein the linear moving assembly is fixed on the supporting assembly, and an output shaft of the linear moving assembly is connected to the heating assembly and used for driving the heating assembly to slide relative to the first connecting assembly.
Further, the force application assembly comprises a vibration exciter, the vibration exciter is fixed on the supporting assembly, and the force application end of the vibration exciter can output alternating force.
Further, the force application assembly further comprises a first support, at least one first guide rail, at least one first sliding block and a second support, the first support is fixed to the support assembly, the first guide rail is connected to the first support, the first sliding block is slidably connected to the first guide rail, the second support is respectively connected to the first sliding block and the force application end of the vibration exciter, and the first connecting assembly is connected to the second support.
Further, the force application assembly further comprises a first pressure sensor, and the first pressure sensor is connected to the force application end of the vibration exciter and the second support respectively.
Further, first coupling assembling includes first cooling tube and first electrode, the one end of first cooling tube connect in the second support, first electrode set up in first cooling tube is kept away from the one end of second support and can dismantle connect in first cooling tube, second coupling assembling includes second cooling tube and second electrode, the second cooling tube set up in the top of first cooling tube and its one end connect in compress tightly the subassembly, the second electrode set up in first cooling tube with between the second cooling tube and can dismantle connect in the second cooling tube.
Furthermore, the first connecting assembly further comprises a plurality of first radiating fins, the first radiating fins are arranged at intervals along the axial direction of the first radiating tube, through holes are formed in the first radiating fins relative to the first radiating tube, and the first radiating fins are fixedly sleeved on the first radiating tube through the through holes.
Further, heating element includes furnace, heating member and the cover body, but furnace sliding sleeve is located first connecting element with second coupling assembling, heating member cover is located furnace, the cover body cover is located heating member.
Further, the heating component further comprises a tray, a first hearth cover, a second hearth cover and a plurality of fixing pieces, the tray is slidably sleeved on the first connecting component and the second connecting component and connected to the hearth and the cover body, the tray is axially provided with a plurality of threaded holes, the first hearth cover is arranged in the cover body, the first hearth cover is provided with a first through hole relative to the hearth, the first hearth cover is provided with a plurality of second through holes relative to the threaded holes, the second through holes and the threaded holes are arranged in a one-to-one correspondence manner, the first hearth cover is sleeved on the hearth through the first through hole and arranged at the bottom of the heating pieces, the second hearth cover is arranged in the cover body, the second hearth cover is provided with a third through hole relative to the hearth, the second hearth cover is provided with a plurality of fourth through holes relative to the second through hole, the fourth through hole and the second through hole are arranged in a one-to-one correspondence mode, the second hearth cover is sleeved on the hearth through the third through hole and arranged at the top of the heating element, the fixing element comprises a screw rod, a first nut and a second nut, one end of the screw rod can penetrate through the fourth through hole and the second through hole in a rotating mode and is in threaded connection with the threaded hole, the first nut is in threaded connection with the screw rod and is arranged between the tray and the first hearth cover, and the second nut is in threaded connection with the screw rod and is arranged on one side, far away from the first hearth cover, of the second hearth cover.
Compared with the prior art, the invention has the beneficial effects that: when a sample to be tested is tested, the test sample is pressed by the pressing component in the force application component, alternating force is applied to the test sample by the force application component, the test sample is heated by the heating component, and the behavior and the law of the piezoelectric property of the piezoelectric material along with the temperature evolution can be tested.
Drawings
FIG. 1 is a schematic structural diagram of a high-temperature piezoelectric measuring device according to the present invention after a housing is hidden;
FIG. 2 is an enlarged partial schematic view at A of FIG. 1;
FIG. 3 is a perspective view of a high temperature piezoelectric measuring device according to the present invention;
FIG. 4 is a perspective view of the high temperature piezoelectric measuring device of the present invention with the housing hidden;
FIG. 5 is a schematic structural view of another view angle of the high temperature piezoelectric measuring device according to the present invention after the housing is hidden;
FIG. 6 is a cross-sectional view taken along line B-B of FIG. 5;
FIG. 7 is an enlarged partial schematic view at C of FIG. 6;
FIG. 8 is an enlarged partial schematic view at D of FIG. 6;
FIG. 9 is an enlarged partial schematic view at E of FIG. 6;
FIG. 10 is a perspective view of a second support plate, a heating element and a linear moving element of the high-temperature piezoelectric measuring device according to the present invention;
fig. 11 is a perspective view of a hearth, a heating member, a tray, a first hearth cover, a second hearth cover, a fixing member, and a second fixing block in the high-temperature piezoelectric measuring device according to the present invention.
Detailed Description
The preferred embodiments of the present invention will now be described in detail with reference to the accompanying drawings, which form a part hereof, and which together with the embodiments of the invention serve to explain the principles of the invention and not to limit its scope.
The invention provides a high-temperature piezoelectric measuring device, which comprises a supporting component 1, a force application component 2, a pressing component 3 and a heating component 4, wherein the supporting component 1 comprises a shell 11, a bottom plate 12, a top plate 13 and a first supporting plate 14, second backup pad 15 and third backup pad 16, the inside of casing 11 is hollow, the outer wall of casing 11 surrounds and is formed with an accommodation hole 17, casing 11 is arranged in and is connected to the bottom inner wall of casing 11 in bottom plate 12, place casing 11 in and set up in the top of bottom plate 12 in roof 13, roof 13 and bottom plate 12 parallel arrangement each other, first backup pad 14, second backup pad 15, third backup pad 16 are parallel to each other and set up between bottom plate 12 and roof 13, first backup pad 14, second backup pad 15, the both ends of third backup pad 16 are connected respectively in bottom plate 12 and roof 13.
The force application assembly 2 is connected to the support assembly 1 for applying an alternating force to the test sample.
The force application assembly 2 comprises an exciter 21, the exciter 21 is fixed on the support assembly 1 and is arranged between the first support plate 14 and the second support plate 15, and the force application end of the exciter 21 can output alternating force.
The vibration exciter 21 is prior art and will not be described in detail in this application.
By providing the exciter 21, the exciter 21 can output a low frequency alternating force for testing.
As shown in fig. 2, in the present embodiment, the force application assembly 2 further includes a first bracket 22, at least one first guide rail 23, at least one first slider 24 and a second bracket 25, the first bracket 22 is fixed to the support assembly 1 and disposed between the first support plate 14 and the second support plate 15, the first guide rail 23 is connected to the first bracket 22 and disposed parallel to the first support plate 14, the first slider 24 is slidably connected to the first guide rail 23, and the second bracket 25 is respectively connected to the first slider 24 and the force application end of the exciter 21.
Wherein, the first bracket 22 is U-shaped, and both ends of the first bracket 22 are connected to the bottom plate 12.
The number of the first guide rails 23 is two, the two first guide rails 23 are respectively disposed on two sides of the resonator 21, the first sliders 24 are disposed in one-to-one correspondence with the first guide rails 23, and the number of the corresponding first sliders 24 is also two.
In this embodiment, the force application assembly 2 further comprises a first pressure sensor 26, and the first pressure sensor 26 is respectively connected to the force application end of the vibration exciter 21 and the second bracket 25.
By providing the first pressure sensor 26, the force generated by the exciter 21 is detected in real time.
The pressing component 3 is connected to the supporting component 1 and is used for pressing the test sample to the force application end of the force application component 2.
As shown in fig. 4, 6 and 8, in the present embodiment, the pressing assembly 3 includes a third bracket 31, a first motor 32, a first pulley 33, a second pulley 34, a belt 35, a first lead screw 36, a first sliding nut 37 and a first sliding member 38, the third bracket 31 is disposed above the top plate 13 and connected to the top plate 13, the first motor 32 is fixed to the third bracket 31, the first lead screw 36 rotatably penetrates through the top plate 13 and can be connected to the third bracket 31, the first pulley 33 is fixedly sleeved on an output shaft of the first motor 32, the second pulley 34 is fixedly sleeved on the first lead screw 36, the belt 35 is respectively sleeved on the first pulley 33 and the second pulley 34, the first sliding nut 37 is connected to the first lead screw 36 in a threaded manner, and the first sliding member 38 is slidably connected to the first sliding nut 37 along an axial direction of the first lead screw 36.
Through setting up third support 31, first motor 32, first band pulley 33, second band pulley 34, belt 35, first lead screw 36, first slip nut 37 and first slider 38, the rotation of first motor 32 can realize the slip from top to bottom of first slip nut 37, through the first slip nut 37 that reciprocates, can apply for the test sample packing force, and carry out the transmission through the mode of belt 35, can avoid the low frequency alternating force of vibration exciter 21 output to transmit first motor 32 through first lead screw 36, play isolated vibration's effect.
Wherein, two spouts have been seted up at the top of roof 13, two spouts are parallel to each other and the interval sets up, first slider 38 includes two sliding plates 381, first connecting block 382, second connecting block 383, sliding plate 381 and spout one-to-one set up, sliding plate 381 slidable passes the spout, first connecting block 382 and second connecting block 383 set up respectively in the both ends of sliding plate 381 and connect respectively in sliding plate 381, first connecting block 382 and second connecting block 383 set up respectively in the both ends of roof 13, and first connecting block 382 sets up in the top of second connecting block 383 and connects in first slip nut 37.
By slidably passing the sliding plate 381 through the top plate 13 and fixing the first and second connection blocks 382 and 383, respectively, to both sides of the sliding plate 381, the slidable distance of the sliding plate 381 can be limited, and the sliding plate 381 can be prevented from sliding down too much.
The pressing assembly 3 further comprises a second sliding member 39, the second sliding member 39 comprises two second guide rails 391 and two second sliding blocks 392, the two second guide rails 391 are arranged at two sides of the sliding plate 381, the second sliding blocks 392 are arranged corresponding to the second guide rails 391 in a one-to-one manner, and the second sliding blocks 392 are slidably connected to the second guide rails 391 and connected to the sliding plate 381 and the first connecting block 382.
By providing the second slider 39, the sliding of the sliding plate 381 can be guided, and the friction between the sliding plate 381 and the chute can be reduced.
In this embodiment, the high temperature piezoelectric measuring device further includes a first connecting component 5 and a second connecting component 6, the first connecting component 5 is connected to the force application end of the force application component 2, and the pressing component 3 is connected to the second connecting component 6, so as to drive the pressing component 3 to press the test sample to the first connecting component 5.
Wherein the first connecting member 5 is connected to the second bracket 25.
As shown in fig. 7, in the present embodiment, the first connection assembly 5 includes a first heat pipe 51 and a first electrode 52, one end of the first heat pipe 51 is connected to the second bracket 25, the first electrode 52 is disposed at one end of the first heat pipe 51 away from the second bracket 25 and detachably connected to the first heat pipe 51, the second connection assembly 6 includes a second heat pipe 61 and a second electrode 62, the second heat pipe 61 is disposed above the first heat pipe 51 and one end thereof is connected to the compressing assembly 3, and the second electrode 62 is disposed between the first heat pipe 51 and the second heat pipe 61 and detachably connected to the second heat pipe 61.
By providing the first heat pipe 51 and the second heat pipe 61, the first electrode 52 and the second electrode 62 can be radiated, and the heat of the first electrode 52 and the second electrode 62 can be conducted out, so that the life of the first electrode 52 and the second electrode 62 can be prolonged.
In this embodiment, the first connection assembly 5 further includes a plurality of first heat dissipation fins 53, the plurality of first heat dissipation fins 53 are disposed at intervals along the axial direction of the first heat dissipation tube 51, the first heat dissipation fins 53 have through holes corresponding to the first heat dissipation tube 51, and the first heat dissipation fins 53 are fixedly sleeved on the first heat dissipation tube 51 through the through holes.
The number of the first cooling fins 53 may be set as required, and the first cooling fins 53 are integrally formed with the first cooling pipe 51.
By disposing the first heat sink 53 and covering the first heat sink 53 on the first heat pipe 51, the first electrode 52 and the first heat pipe 51 can dissipate heat, and the first heat sink 53 can block the outside air from entering the heating element 4, so as to maintain the temperature inside the heating element 4 constant.
Wherein, the first connection assembly 5 further includes an end cap 54, a first insulation sheet 55, a second insulation sheet 56 and a connection nut 57, the end cap 54 is detachably connected to the other end of the first heat dissipation pipe 51 by a screw, the end cap 54 is provided with a first fixing hole, a second fixing hole and a third fixing hole which are sequentially communicated along the axial direction of the first heat dissipation pipe 51, the inner diameter of the second fixing hole is smaller than the inner diameters of the first fixing hole and the third fixing hole, the first electrode 52 is in a stepped shaft shape, the small diameter section of the first electrode 52 is provided with an external thread along the axial direction and rotatably penetrates through the first fixing hole, the second fixing hole and the third fixing hole, the large diameter section of the first electrode 52 is arranged above the end cap 54, the first insulation sheet 55 is sleeved on the small diameter end of the first electrode 52, and both ends thereof are respectively abutted against the bottom inner wall of the first fixing hole and the large diameter end of the first electrode 52, the second insulation sheet 56 is sleeved on the small diameter end of the first electrode 52, and one end thereof is abutted against the bottom inner wall And a coupling nut 57 is screwed to the small diameter end of the first electrode 52 and abuts against the other end of the second insulating sheet 56.
By providing the end cap 54, the first insulating sheet 55, the second insulating sheet 56, and the coupling nut 57, the first electrode 52 can be attached to the vibrating first heat pipe 51, the first electrode 52 can be fixed to the first heat pipe 51, and the first electrode 52 can be removed and replaced when necessary.
Wherein, the inner wall of the end of the second radiating pipe 61 close to the first radiating pipe 51 is provided with an internal thread along the axial direction, the second electrode 62 is in a stepped shaft shape, the outer wall of the small diameter section of the second electrode 62 is provided with an external thread, and the small diameter section of the second electrode 62 is in threaded connection with the end of the second radiating pipe 61 close to the first radiating pipe 51.
By screwing the small diameter section of the second electrode 62 to the second radiating pipe 61, the second electrode 62 can be removed from the second radiating pipe 61, which facilitates the replacement of the second electrode 62.
In this embodiment, the second connecting assembly 6 further includes a plurality of second heat dissipating fins 63, the plurality of second heat dissipating fins 63 are disposed at intervals along the axial direction of the second heat dissipating tube 61, the second heat dissipating fins 63 have through holes corresponding to the second heat dissipating tube 61, and the second heat dissipating fins 63 are fixedly sleeved on the second heat dissipating tube 61 through the through holes.
The number of the second heat dissipation fins 63 can be set as required, and the second heat dissipation fins 63 and the second heat dissipation pipe 61 are integrally formed.
In this embodiment, the second connection assembly 6 further includes a second pressure sensor 64, the second pressure sensor 64 is disposed between the second heat pipe 61 and the pressing assembly 3, and the second heat pipe 61 is communicated with the pressing assembly 3 through the pressing assembly 3.
The second pressure sensor 64 is disposed between the second heat pipe 61 and the second connection block 383, and the second pressure sensor 64 is respectively connected to the second heat pipe 61 and the second connection block 383.
When the pressing assembly 3 applies pressing force to the sample to be tested, the pressure applied to the sample to be tested by the pressing assembly 3 can be known by arranging the second pressure sensor 64, the pressing assembly 3 is controlled to apply a constant pressure value to the sample to be tested, then the vibration exciter 21 is started, and alternating force is applied to the material to be tested by the vibration exciter 21.
The heating assembly 4 is used to heat the test sample.
In this embodiment, the heating element 4 is slidably sleeved on the first connecting element 5 and the second connecting element 6.
In this embodiment, the heating element 4 includes a hearth 41, a heating element 42 and a cover 43, the hearth 41 is slidably sleeved on the first connecting element 5 and the second connecting element 6, the heating element 42 is sleeved on the hearth 41, and the cover 43 covers the heating element 42.
Through setting up furnace 41, heat furnace 41 through heating member 42, heat test sample through furnace 41 is indirect, avoided test sample to be heated inhomogeneously, locate first fin 53 and second fin 63 through surveying sample article cover for furnace 41's internal diameter is greater than first cooling tube 51 and second cooling tube 61, furnace 41 contact test sample when avoiding sliding furnace 41.
The hearth 41 is slidably sleeved on the first heat sink 53 and the second heat sink 63.
The cover 43 has a first mounting hole corresponding to the first heat sink 53 and the second heat sink 63.
The heating member 42 may be a heating wire, a PTC ceramic, a silicon nitride heating sheet, a PTC ceramic sheet, or the like, and in the present embodiment, the heating member 42 is a heating wire disposed in a cylindrical shape, but the material of the heating member 42 is not limited thereto.
As shown in fig. 11, in the present embodiment, the heating element 4 further includes a tray 44, a first hearth cover 45, a second hearth cover 46 and a plurality of fixing members 47, the tray 44 is slidably sleeved on the first connecting element 5 and the second connecting element 6 and is connected to the hearth 41 and the cover 43, the tray 44 is axially provided with a plurality of threaded holes, the first hearth cover 45 is disposed in the cover 43, the first hearth cover 45 is provided with a first through hole corresponding to the hearth 41, the first hearth cover 45 is provided with a plurality of second through holes corresponding to the threaded holes, the second through holes and the threaded holes are arranged in a one-to-one correspondence manner, the first hearth cover 45 is sleeved on the hearth 41 through the first through hole and is disposed at the bottom of the heating element 42, the second hearth cover 46 is disposed in the cover 43, the second hearth cover 46 is provided with a third through hole corresponding to the hearth 41, the second hearth cover 46 is provided with a plurality of fourth through holes corresponding to the second through holes, the second hearth cover 46 is sleeved on the hearth 41 through the third through hole and is arranged on the top of the heating element 42, the fixing member 47 comprises a screw 471, a first nut 472 and a second nut 473, one end of the screw 471 can rotatably penetrate through the fourth through hole and the second through hole and is in threaded connection with the threaded hole, the first nut 472 is in threaded connection with the screw 471 and is arranged between the tray 44 and the first hearth cover 45, and the second nut 473 is in threaded connection with the screw 471 and is arranged on one side of the second hearth cover 46, which is far away from the first hearth cover 45.
Through setting up mounting 47, can fix heating member 42 on tray 44, through setting up first furnace lid 45 and second furnace lid 46, can effectively keep apart heating member 42 in other parts, avoid heating member 42 direct contact other parts of high temperature, can effectively reduce thermal loss.
In this embodiment, the high temperature piezoelectric measuring device further includes a linear moving element 7, the linear moving element 7 is fixed to the supporting element 1, and an output shaft thereof is connected to the heating element 4 for driving the heating element 4 to slide relative to the first connecting element 5.
As shown in fig. 9 and 10, in the present embodiment, a sliding hole is formed at a middle portion of the second support plate 15, the sliding hole is disposed along an axial direction of the first radiating pipe 51, the linear moving assembly 7 includes a second motor 71, a second lead screw 72, a second sliding nut 73, a guide 74 and a second fixing block 75, the second motor 71 is disposed between the third support plate 16 and the second support plate 15 and connected to the second support plate 15, the second lead screw 72 is connected to an output shaft of the second motor 71 and disposed parallel to the first radiating pipe 51, the second sliding nut 73 is threadedly connected to the second lead screw 72, the guide 74 includes a guide rod 741, two first fixing blocks 742 and a sliding sleeve 743, the guide rod 741 is disposed between the first support plate 14 and the second support plate 15 and disposed parallel to the first radiating pipe 51, the two first fixing blocks 742 are disposed at both ends of the guide rod 741 and connected to the guide rods 741 respectively, the sliding sleeve 743 is slidably sleeved on the guide rod 741, the second fixing block 75 slidably penetrates through the sliding hole, the second fixing block 75 is provided with a second mounting hole corresponding to the second sliding nut 73, the second fixing block 75 is provided with a third mounting hole corresponding to the sliding sleeve 743, and the second fixing block 75 is fixedly sleeved on the second sliding nut 73 and the sliding sleeve 743 through the second mounting hole and the third mounting hole respectively.
In this embodiment, the linear moving assembly 7 further includes a conductive block 76, at least one terminal 77, and at least one copper pin 78, the conductive block 76 is provided with a third mounting hole corresponding to the guide rod 741, the conductive block 76 is sleeved on the conductive block 76 through the third mounting hole and connected to the second support plate 15, an inner diameter of the third mounting hole is larger than an outer diameter of the guide rod 741, the terminal 77 is connected to the conductive block 76, the copper pin 78 is arranged corresponding to the terminal 77 and connected to the second fixed block 75, when the copper pin 78 abuts against the terminal 77, the second motor 71 is powered off, and at this time, the heating assembly 4 just covers the test sample at the middle position.
In this embodiment, the number of the terminals 77 may be one, two, three, four, etc., and the number of the terminals 77 is four, the four terminals 77 are arranged in a matrix, the copper pins 78 are arranged in one-to-one correspondence with the terminals 77, and correspondingly, the number of the copper pins 78 is four, but the number of the terminals 77 and the number of the copper pins 78 are not limited thereto.
The specific working process of the invention is as follows: the test sample is sent into the containing hole 17 and arranged on the large-diameter section of the first electrode 52, then the first motor 32 is started, the first motor 32 drives the first belt pulley 33 to rotate, the first belt pulley 33 drives the second belt pulley 34 to rotate through the belt 35, the second belt pulley 34 drives the first screw rod 36 to rotate, the first sliding nut 37 moves along the axial direction of the first screw rod 36, the first sliding nut 37 drives the first sliding part 38, the second radiating pipe 61 and the second electrode 62 to move towards the direction close to the test sample until the second electrode 62 presses the test sample on the first electrode 52, then the first motor 32 is closed, the second motor 71 is started, the output shaft of the second motor 71 drives the second screw rod 72 to rotate, the second sliding nut 73 moves along the axial direction of the second screw rod 72, the second sliding nut 73 drives the second fixed block 75 to move along the guide direction of the guide rod 741, the second fixing block 75 drives the heating assembly 4 to move along the axial direction of the first radiating pipe 51 until the hearth 41 and the heating element 42 are covered on the first radiating fin 53, the test sample and the second radiating fin 63, then the vibration exciter 21 is started, the vibration exciter 21 outputs longitudinal low-frequency alternating force, the low-frequency alternating force is transmitted to the test sample through the first pressure sensor 26, the second support 25 and the first radiating pipe 51, the low-frequency alternating force is applied to the test sample, the heating element 42 is started, the heating element 42 is heated, the temperature of the test sample in the hearth 41 is heated through the heating element 42, and the behavior and the law of the piezoelectric performance of the piezoelectric material along with the temperature evolution can be tested.
After the experiment is completed, the heating element 42 is controlled to stop heating, the heating element 4 is controlled to move upwards through the linear moving element 7, the first motor 32 is started, the second radiating pipe 61 and the second electrode 62 move upwards, the test sample can be taken out from the containing hole 17 at the moment, and then the next test can be started.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present invention are also within the scope of the present invention.
Claims (10)
1. A high temperature piezoelectric measurement device, comprising:
a support assembly;
the force application assembly is connected to the support assembly and is used for applying alternating force to the test sample;
the pressing component is connected to the supporting component and is used for pressing the test sample to the force application end of the force application component;
a heating assembly for heating the test sample.
2. The pyro-piezoelectric measuring device according to claim 1, further comprising a first connecting member and a second connecting member, wherein the first connecting member is connected to the force applying end of the force applying member, the pressing member is connected to the second connecting member, and is configured to drive the pressing member to press the test sample against the first connecting member, and the heating member is slidably sleeved on the first connecting member and the second connecting member.
3. The pyro-piezoelectric measuring device according to claim 2, further comprising a linear moving member fixed to the support member and having an output shaft connected to the heating member for driving the heating member to slide relative to the first connecting member.
4. The pyro-piezoelectric measuring device according to claim 2, wherein the force application assembly comprises an exciter fixed to the support assembly, and an application end of the exciter can output an alternating force.
5. The pyro-piezoelectric measuring device according to claim 4, wherein the force application assembly further comprises a first bracket, at least one first rail, at least one first slider, and a second bracket, the first bracket is fixed to the support assembly, the first rail is connected to the first bracket, the first slider is slidably connected to the first rail, the second bracket is connected to the force application ends of the first slider and the vibration exciter, respectively, and the first connection assembly is connected to the second bracket.
6. The pyro-piezoelectric measuring device of claim 5, wherein the force application assembly further comprises a first pressure sensor connected to the force application end of the exciter and the second bracket, respectively.
7. The apparatus of claim 5, wherein the first connection assembly comprises a first heat pipe and a first electrode, one end of the first heat pipe is connected to the second support, the first electrode is disposed at an end of the first heat pipe away from the second support and detachably connected to the first heat pipe, the second connection assembly comprises a second heat pipe and a second electrode, the second heat pipe is disposed above the first heat pipe and one end of the second heat pipe is connected to the compressing assembly, and the second electrode is disposed between the first heat pipe and the second heat pipe and detachably connected to the second heat pipe.
8. The apparatus according to claim 7, wherein the first connection assembly further comprises a plurality of first heat dissipation fins spaced apart from each other along an axial direction of the first heat dissipation tube, the first heat dissipation fins having through holes formed therein and being fixedly secured to the first heat dissipation tube through the through holes.
9. The piezoelectric high temperature measurement device according to claim 7, wherein the heating element includes a furnace, a heating element and a cover, the furnace is slidably sleeved on the first connection element and the second connection element, the heating element is sleeved on the furnace, and the cover is disposed on the heating element.
10. The high-temperature piezoelectric measuring device according to claim 9, wherein the heating element further includes a tray, a first hearth cover, a second hearth cover, and a plurality of fixing members, the tray is slidably sleeved on the first connecting element and the second connecting element and connected to the hearth and the cover, the tray has a plurality of threaded holes along the axial direction, the first hearth cover is disposed in the cover, the first hearth cover has a first through hole corresponding to the hearth, the first hearth cover has a plurality of second through holes corresponding to the threaded holes, the second through holes are disposed in one-to-one correspondence with the threaded holes, the first hearth cover is sleeved on the hearth through the first through hole and disposed at the bottom of the heating element, the second hearth cover is disposed in the cover, and the second hearth cover has a third through hole corresponding to the hearth, the second hearth cover is provided with a plurality of fourth through holes relative to the second through holes, the fourth through holes are in one-to-one correspondence with the second through holes, the second hearth cover is sleeved on the hearth through the third through holes and is arranged at the top of the heating element, the fixing piece comprises a screw rod, a first nut and a second nut, one end of the screw rod can rotatably penetrate through the fourth through holes and the second through holes and is in threaded connection with the threaded holes, the first nut is in threaded connection with the screw rod and is arranged between the tray and the first hearth cover, and the second nut is in threaded connection with the screw rod and is arranged on one side, far away from the first hearth cover, of the second hearth cover.
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