CN113092683B - High-temperature piezoelectric measurement device - Google Patents
High-temperature piezoelectric measurement device Download PDFInfo
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- CN113092683B CN113092683B CN202110367734.3A CN202110367734A CN113092683B CN 113092683 B CN113092683 B CN 113092683B CN 202110367734 A CN202110367734 A CN 202110367734A CN 113092683 B CN113092683 B CN 113092683B
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- 238000005259 measurement Methods 0.000 title claims abstract description 20
- 238000010438 heat treatment Methods 0.000 claims abstract description 58
- 238000012360 testing method Methods 0.000 claims abstract description 35
- 230000006835 compression Effects 0.000 claims abstract 4
- 238000007906 compression Methods 0.000 claims abstract 4
- 238000001816 cooling Methods 0.000 claims description 43
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 9
- 229910052802 copper Inorganic materials 0.000 claims description 9
- 239000010949 copper Substances 0.000 claims description 9
- 239000000463 material Substances 0.000 abstract description 9
- 230000008878 coupling Effects 0.000 description 5
- 238000010168 coupling process Methods 0.000 description 5
- 238000005859 coupling reaction Methods 0.000 description 5
- 239000000919 ceramic Substances 0.000 description 2
- 230000005855 radiation Effects 0.000 description 2
- 229910052581 Si3N4 Inorganic materials 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 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
- 238000011056 performance test 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 measurement device which comprises a support component, a force application component, a compression component and a heating component, wherein the force application component is connected with the support component and is used for applying alternating force to a test sample; the compressing assembly is connected with the supporting assembly and used for compressing the test sample on the force application assembly; the heating assembly is used for heating the test sample. The invention can test the evolution behavior and rule of the piezoelectric property of the piezoelectric material along with the temperature.
Description
Technical Field
The invention relates to the technical field of piezoelectric measurement, in particular to a high-temperature piezoelectric measurement device.
Background
The temperature stability of the piezoelectric material is a key factor for determining the working reliability and service life of key piezoelectric devices such as piezoelectric sensors, drivers, transducers and the like in a high-temperature service environment.
In order to improve the stability and reliability of the piezoelectric material and the device in the high temperature environment, the evolution behavior and rule of the piezoelectric performance of the piezoelectric material along with the temperature needs to be developed, but the current piezoelectric performance test is carried out in the room temperature environment, so that the measurement parameters are limited in the room temperature environment, and a device for testing the evolution behavior and rule of the piezoelectric performance of the piezoelectric material along with the temperature at the high temperature is lacked.
Disclosure of Invention
In view of the foregoing, it is necessary to provide a high-temperature piezoelectric measurement device, which solves the technical problem that the device for testing the evolution behavior and regularity of the piezoelectric performance of the piezoelectric material with temperature at high temperature is lacking in the prior art.
In order to achieve the above technical purpose, the technical solution of the present invention provides a high temperature piezoelectric measurement device, which is characterized by 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 compressing assembly is connected with the supporting assembly and used for compressing the test sample at the force application end of the force application assembly;
And the heating assembly is used for heating the test sample.
Further, the high-temperature piezoelectric measurement device further comprises a first connecting component and a second connecting component, the first connecting component is connected with the force application end of the force application component, the pressing component is connected with the second connecting component and used for driving the pressing component to press the test sample to the first connecting component, and the heating component is slidably sleeved on the first connecting component and the second connecting component.
Further, the high-temperature piezoelectric measurement 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 with the heating assembly and is 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 support 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, wherein the first support is fixed on the support assembly, the first guide rail is connected with the first support, the first sliding block is slidably connected with the first guide rail, the second support is respectively connected with the first sliding block and the force application end of the vibration exciter, and the first connection assembly is connected with the second support.
Further, the force application assembly further comprises a first pressure sensor, and the first pressure sensor is respectively connected with the force application end of the vibration exciter and the second bracket.
Further, the 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 keep away from the one end of second support and can dismantle connect in first cooling tube, the 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 between first cooling tube with the second cooling tube and can dismantle connect in the second cooling tube.
Further, the first connecting assembly further comprises a plurality of first radiating fins, the plurality of first radiating fins are arranged along the axial direction of the first radiating pipe at intervals, through holes are formed in the first radiating fins relative to the first radiating pipe, and the first radiating fins are fixedly sleeved on the first radiating pipe through the through holes.
Further, the heating assembly comprises a hearth, a heating piece and a cover body, wherein the hearth is slidably sleeved on the first connecting assembly and the second connecting assembly, the heating piece is sleeved on the hearth, and the cover body is covered on the heating piece.
Further, the heating element still includes tray, first furnace lid, second furnace lid and a plurality of mounting, the slidable sleeve of tray locate first coupling assembling and second coupling assembling and connect in the furnace with the cover body, the tray is seted up along the axial a plurality of screw holes, first furnace lid in the cover body, first furnace lid is relative first through-hole has been seted up to the furnace, first furnace lid is relative the screw hole has been seted up a plurality of second through-holes, the second through-hole with the screw hole one-to-one sets up, first furnace lid is through first through-hole cover is located the furnace and set up in the bottom of heating element, second furnace lid is arranged in the cover body, the second furnace lid is relative the third through-hole has been seted up to the furnace, the second furnace lid is relative the second through-hole has been seted up a plurality of fourth through-holes, the second furnace lid is through the third through-hole cover and set up in the screw thread nut is kept away from to the second screw, first through-hole cover and set up in the first screw thread nut is kept away from to the second screw.
Compared with the prior art, the invention has the beneficial effects that: when the sample to be tested is tested, the test sample is pressed on the force application component through the pressing component, alternating force is applied to the test sample through the force application component, the test sample is heated through the heating component, and the evolution behavior and rule of the piezoelectric performance of the piezoelectric material along with the temperature can be tested.
Drawings
FIG. 1 is a schematic view of a hidden housing of a high temperature piezoelectric measurement device according to the present invention;
FIG. 2 is an enlarged schematic view of a portion of FIG. 1 at A;
FIG. 3 is a perspective view of a high temperature piezoelectric measurement device according to the present invention;
FIG. 4 is a perspective view of the high temperature piezoelectric measurement device of the present invention after housing is hidden;
FIG. 5 is a schematic view of a high temperature piezoelectric measurement device according to the present invention from another view angle after hiding the housing;
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 in FIG. 6;
FIG. 8 is a partially enlarged schematic illustration of FIG. 6 at D;
FIG. 9 is an enlarged partial schematic view at E in FIG. 6;
FIG. 10 is a perspective view of a second support plate, a heating assembly and a linear motion assembly of the high temperature piezoelectric measurement apparatus of the present invention;
Fig. 11 is a perspective view of a furnace, a heating member, a tray, a first furnace cover, a second furnace cover, a fixing member, and a second fixing block in the high-temperature piezoelectric measuring device according to the present invention.
Detailed Description
The following detailed description of preferred embodiments of the application is made in connection with the accompanying drawings, which form a part hereof, and together with the description of the embodiments of the application, are used to explain the principles of the application and are not intended to limit the scope of the application.
The invention provides a high-temperature piezoelectric measuring device, which is shown in fig. 1 and 3, and comprises a supporting component 1, a force application component 2, a compressing component 3 and a heating component 4, wherein the supporting component 1 comprises a shell 11, a bottom plate 12, a top plate 13, a first supporting plate 14, a second supporting plate 15 and a third supporting plate 16, the inside of the shell 11 is hollow, an accommodating hole 17 is formed around the outer wall of the shell 11, the bottom plate 12 is arranged in the shell 11 and connected with the bottom inner wall of the shell 11, the top plate 13 is arranged in the shell 11 and is arranged above the bottom plate 12, the top plate 13 and the bottom plate 12 are arranged in parallel, the first supporting plate 14, the second supporting plate 15 and the third supporting plate 16 are arranged between the bottom plate 12 and the top plate 13 in parallel, and two ends of the first supporting plate 14, the second supporting plate 15 and the third supporting plate 16 are respectively connected with the bottom plate 12 and the top plate 13.
The force application assembly 2 is connected to the support assembly 1 for applying alternating force to the test sample.
The force application assembly 2 comprises a vibration exciter 21, the vibration exciter 21 is fixed on the support assembly 1 and arranged between the first support plate 14 and the second support plate 15, and the force application end of the vibration exciter 21 can output alternating force.
The vibration exciter 21 is a prior art, and is not described in detail in the present application.
By providing the vibration exciter 21, the vibration 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 rail 23, at least one first slider 24, and a second bracket 25, wherein 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 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 rail 23, and the second bracket 25 is connected to the first slider 24 and the force application end of the vibration exciter 21, respectively.
The first bracket 22 is U-shaped, and two 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 at two sides of the vibration exciter 21, the first sliding blocks 24 are disposed in one-to-one correspondence with the first guide rails 23, and the number of the corresponding first sliding blocks 24 is also two.
In this embodiment, the force application assembly 2 further includes a first pressure sensor 26, and the first pressure sensor 26 is connected to the force application end of the vibration exciter 21 and the second bracket 25, respectively.
The force generated by the vibration exciter 21 is detected in real time by providing the first pressure sensor 26.
The compressing assembly 3 is connected to the supporting assembly 1, and is used for compressing the test sample on the force application end of the force application assembly 2.
As shown in fig. 4, 6 and 8, in the present embodiment, the compressing assembly 3 includes a third bracket 31, a first motor 32, a first pulley 33, a second pulley 34, a belt 35, a first screw rod 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 on the third bracket 31, the first screw rod 36 can pass through the top plate 13 rotatably and can pass through the third bracket 31, the first pulley 33 is fixedly sleeved on the output shaft of the first motor 32, the second pulley 34 is fixedly sleeved on the first screw rod 36, the belt 35 is respectively sleeved on the first pulley 33 and the second pulley 34, the first sliding nut 37 is in threaded connection with the first screw rod 36, and the first sliding member 38 is slidably connected to the first sliding nut 37 along the axial direction of the first screw rod 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 upper and lower slip of first slip nut 37, through the first slip nut 37 of reciprocates, can apply to the test sample compacting 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 for first motor 32 through first lead screw 36, play the effect of isolated vibration.
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 slide plate 381, first connecting block 382, second connecting block 383, slide plate 381 and spout one-to-one setting, slide plate 381 slidable passes the spout, first connecting block 382 and second connecting block 383 set up respectively in the both ends of slide plate 381 and connect respectively in slide 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 having the first connection block 382 and the second connection block 383 fixed to both sides of the sliding plate 381, respectively, the slidable distance of the sliding plate 381 can be limited, and an excessive distance of the sliding plate 381 sliding downward can be avoided.
The pressing assembly 3 further includes a second sliding member 39, where the second sliding member 39 includes two second guide rails 391 and two second sliding blocks 392, the two second guide rails 391 are disposed on two sides of the sliding plate 381, the second sliding blocks 392 are disposed in one-to-one correspondence with the second guide rails 391, 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 frictional force between the sliding plate 381 and the chute can be reduced.
In this embodiment, the high temperature piezoelectric measurement device further includes a first connecting component 5 and a second connecting component 6, where the first connecting component 5 is connected to the force application end of the force application component 2, and the compressing component 3 is connected to the second connecting component 6, so as to drive the compressing component 3 to compress the test sample on the first connecting component 5.
Wherein the first connecting assembly 5 is connected to the second bracket 25.
As shown in fig. 7, in the present embodiment, the first connecting component 5 includes a first heat dissipating tube 51 and a first electrode 52, one end of the first heat dissipating tube 51 is connected to the second bracket 25, the first electrode 52 is disposed at one end of the first heat dissipating tube 51 away from the second bracket 25 and is detachably connected to the first heat dissipating tube 51, the second connecting component 6 includes a second heat dissipating tube 61 and a second electrode 62, the second heat dissipating tube 61 is disposed above the first heat dissipating tube 51 and one end of the second heat dissipating tube 61 is connected to the compressing component 3, and the second electrode 62 is disposed between the first heat dissipating tube 51 and the second heat dissipating tube 61 and is detachably connected to the second heat dissipating tube 61.
By providing the first heat radiation pipe 51 and the second heat radiation pipe 61, heat of the first electrode 52 and the second electrode 62 can be radiated, and 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 connecting component 5 further includes a plurality of first cooling fins 53, the plurality of first cooling fins 53 are disposed along the axial direction of the first cooling tube 51 at intervals, the first cooling fins 53 have through holes opposite to the first cooling tube 51, and the first cooling fins 53 are fixedly sleeved on the first cooling 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 and the first cooling tube 51 are integrally formed.
By arranging the first radiating fins 53 and sleeving the first radiating fins 53 on the first radiating tube 51, the first electrode 52 and the first radiating tube 51 can radiate heat, and the first radiating fins 53 can block external air from entering the heating assembly 4, so that the temperature in the heating assembly 4 can be kept constant.
The first connection assembly 5 further includes an end cover 54, a first insulating sheet 55, a second insulating sheet 56 and a connection nut 57, the end cover 54 is detachably connected to the other end of the first radiating tube 51 through a screw, the end cover 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 radiating tube 51, the inner diameter of the second fixing hole is smaller than that 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 external threads along the axial direction and can pass through the first fixing hole, the second fixing hole and the third fixing hole in a rotatable manner, the large-diameter section of the first electrode 52 is arranged above the end cover 54, the first insulating sheet 55 is sleeved at the small-diameter end of the first electrode 52, two ends of the first insulating sheet 55 are respectively abutted to the bottom inner wall of the first fixing hole, the second insulating sheet 56 is sleeved at the small-diameter end of the first electrode 52, one end of the second insulating sheet 56 is abutted to the bottom inner wall of the third fixing hole, and the connection nut 57 is connected to the other end of the first electrode 52 in a threaded manner and is abutted to 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, it is possible to mount the first electrode 52 on the vibrating first radiating pipe 51, fix the first electrode 52 to the first radiating pipe 51, and detach the first electrode 52 for replacement when necessary.
Wherein, the inner wall of the second radiating tube 61 near one end of the first radiating tube 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 one end of the second radiating tube 61 near the first radiating tube 51.
The second electrode 62 can be removed from the second radiating pipe 61 by screwing the small diameter section of the second electrode 62 to the second radiating pipe 61, facilitating replacement of the second electrode 62.
In the present embodiment, the second connecting assembly 6 further includes a plurality of second cooling fins 63, the plurality of second cooling fins 63 are disposed along the axial direction of the second cooling tube 61 at intervals, the second cooling fins 63 have through holes opposite to the second cooling tube 61, and the second cooling fins 63 are fixedly sleeved on the second cooling tube 61 through the through holes.
The number of the second cooling fins 63 may be set as required, and the second cooling fins 63 and the second cooling tube 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 dissipating tube 61 and the compressing assembly 3, and the second heat dissipating tube 61 is communicated with the compressing assembly 3 through the compressing assembly 3.
The second pressure sensor 64 is disposed between the second radiating pipe 61 and the second connection block 383, and the second pressure sensor 64 is connected to the second radiating pipe 61 and the second connection block 383, respectively.
When the pressing component 3 applies the pressing force to the sample to be tested, the second pressure sensor 64 is arranged, so that the pressure of the pressing component 3 applied to the sample to be tested can be known, the pressing component 3 is controlled to apply a constant pressure value to the sample to be tested, then the vibration exciter 21 is started, and the alternating force is applied to the material to be tested through 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 furnace 41, a heating element 42, and a cover 43, the furnace 41 is slidably sleeved on the first connecting element 5 and the second connecting element 6, the heating element 42 is sleeved on the furnace 41, and the cover 43 is covered on the heating element 42.
Through setting up furnace 41, heat furnace 41 through heating member 42, indirectly heat test sample through furnace 41, avoided test sample to be heated inhomogeneous, through locating first fin 53 and second fin 63 with test sample 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.
Wherein, the furnace 41 is slidably sleeved on the first cooling fin 53 and the second cooling fin 63.
Wherein, the cover 43 is provided with a first mounting hole opposite to the first cooling fin 53 and the second cooling fin 63.
The heating element 42 may be a heating wire, PTC ceramic, silicon nitride heating sheet, PTC ceramic sheet, or the like, and in this embodiment, the heating element 42 is a heating wire provided in a cylindrical shape, but the material of the heating element 42 is not limited thereto.
As shown in fig. 11, in this embodiment, the heating assembly 4 further includes a tray 44, a first furnace chamber cover 45, a second furnace chamber cover 46 and a plurality of fixing members 47, the tray 44 is slidably sleeved on the first connecting assembly 5 and the second connecting assembly 6 and is connected to the furnace chamber 41 and the cover 43, the tray 44 is provided with a plurality of threaded holes along an axial direction, the first furnace chamber cover 45 is internally provided with the cover 43, the first furnace chamber cover 45 is provided with a first through hole corresponding to the furnace chamber 41, the first furnace chamber cover 45 is provided with a plurality of second through holes corresponding to the threaded holes, the second through holes are arranged corresponding to the threaded holes, the first furnace chamber cover 45 is sleeved on the furnace chamber 41 through the first through holes and is arranged at the bottom of the heating member 42, the second furnace chamber cover 46 is internally provided with the cover 43, the second furnace chamber cover 46 is provided with a third through hole corresponding to the furnace chamber 41, the second furnace chamber cover 46 is provided with a plurality of fourth through holes corresponding to the second through holes, the second furnace chamber cover 46 is sleeved on the top of the heating member 42 through the first through hole, the fixing members 47 comprise first through holes and second through holes 471 and 471, and 471 are rotatably connected to one side of the first screw bolt and the second screw bolt through the first through hole and the first through 471 and the second screw bolt through the first through hole and the thread through the first through hole is connected to the first screw thread and the first screw cap 471 and the second screw and the screw 45.
By arranging the fixing member 47, the heating member 42 can be fixed on the tray 44, and by arranging the first hearth cover 45 and the second hearth cover 46, the heating member 42 can be effectively isolated from other components, the high-temperature heating member 42 is prevented from directly contacting with other components, and the heat loss can be effectively reduced.
In this embodiment, the high temperature piezoelectric measurement device further includes a linear moving assembly 7, where the linear moving assembly 7 is fixed to the supporting assembly 1 and has an output shaft connected to the heating assembly 4, and is used for driving the heating assembly 4 to slide relative to the first connecting assembly 5.
As shown in fig. 9 and 10, in the present embodiment, a sliding hole is formed in the middle of the second support plate 15, the sliding hole is disposed along the axial direction of the first radiating pipe 51, the linear moving assembly 7 includes a second motor 71, a second screw rod 72, a second sliding nut 73, a guide member 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 is connected to the second support plate 15, the second screw rod 72 is connected to the output shaft of the second motor 71 and is disposed parallel to the first radiating pipe 51, the second sliding nut 73 is connected to the second screw rod 72 in a threaded manner, the guide member 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 is disposed parallel to the first radiating pipe 51, the two first fixing blocks 742 are respectively disposed at two ends of the guide rod 741, the 743 is slidably sleeved on the guide rod 741, the second fixing block 75 is slidably passed through the sliding hole, the second fixing block 75 is relatively provided with a second mounting hole 743, and the second fixing hole is disposed opposite to the second fixing hole 743.
In this embodiment, the linear moving assembly 7 further includes a conductive block 76, at least one terminal 77, and at least one copper needle 78, where the conductive block 76 has a fourth mounting hole opposite to the guide rod 741, the conductive block 76 is sleeved on the guide rod 741 via the fourth mounting hole and connected to the second support plate 15, the inner diameter of the fourth mounting hole is greater than the outer diameter of the guide rod 741, the terminal 77 is connected to the conductive block 76, the copper needle 78 is opposite to the terminal 77 and connected to the second fixed block 75, and when the copper needle 78 abuts against the terminal 77, the second motor 71 is powered off, and the heating assembly 4 just covers the test sample at the middle position.
The number of the posts 77 may be one, two, three, four, etc., in this embodiment, the number of the posts 77 is four, the four posts 77 are arranged in a matrix, the copper pins 78 are arranged in a one-to-one correspondence with the posts 77, and the number of the copper pins 78 is four correspondingly, but the numbers of the posts 77 and the copper pins 78 are not limited thereto.
The specific working procedure of the invention is as follows: the test sample is sent into the accommodating hole 17 and is 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 moves to the first sliding piece 38, the second radiating tube 61 and the second electrode 62 towards the direction close to the test sample until the second electrode 62 compresses 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 moves to the second screw rod 72, the second sliding nut 73 moves along the axial direction of the second screw rod 72, the second sliding nut 73 drives the second fixing block 75 to move along the guide direction of the guide rod 741, the second fixing block 75 drives the heating component 4 to move along the axial direction of the first radiating tube 51 until the hearth 41 and the heating piece 42 are covered on the first piece 53, the test sample and the second radiating piece 63 are started, then the second radiator 21 is started, the low-frequency radiating piece 21 is output to the low-frequency radiating piece and the low-frequency radiating piece is heated by the low-frequency exciting piece 25, the low-frequency exciting piece is heated by the low-frequency exciting piece, the low-frequency exciting piece is heated by the low-frequency exciting piece and the low-frequency exciting piece is heated by the low-frequency exciting piece, the low-frequency exciting piece and the low-frequency exciting piece is heated to the test sample, the low-frequency exciting piece is heated, and the temperature, the temperature and the temperature is heated, and the temperature is heated.
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 assembly 7, the first motor 32 is started, the second radiating tube 61 and the second electrode 62 move upwards, at this time, the test sample can be taken out from the accommodating hole 17, and then the next test can be started.
The present invention is not limited to the above-mentioned embodiments, and any changes or substitutions that can be easily understood by those skilled in the art within the technical scope of the present invention are intended to be included in the scope of the present invention.
Claims (8)
1. A high temperature piezoelectric measurement device, comprising:
The support assembly comprises a shell, a bottom plate, a top plate, a first support plate, a second support plate and a third support plate, wherein the shell is hollow, the bottom plate is arranged in the shell and connected to the inner wall of the bottom of the shell, the top plate is arranged in the shell and above the bottom plate, the first support plate, the second support plate and the third support plate are mutually parallel and arranged between the bottom plate and the top plate, two ends of the first support plate, the second support plate and the third support plate are respectively connected to the bottom plate and the top plate, and a sliding hole is formed in the middle of the second support plate;
The force application assembly is connected to the support assembly and is used for applying alternating force to the test sample;
The first connecting component is connected with the force application end of the force application component,
A second connection assembly;
The compression assembly is connected with the support assembly and is connected with the second connecting assembly and used for driving the second connecting assembly to compress the test sample on the first connecting assembly; the compression assembly comprises a third bracket, a first motor, a first belt wheel, a second belt wheel, a belt, a first screw rod, a first sliding nut and a first sliding piece, wherein the third bracket is connected with the top plate, the first motor is fixed on the third bracket, the first screw rod can pass through the top plate and the third bracket in a rotating mode, the first belt wheel is fixedly sleeved on an output shaft of the first motor, the second belt wheel is fixedly sleeved on the first screw rod, the belt is respectively sleeved on the first belt wheel and the second belt wheel, the first sliding nut is in threaded connection with the first screw rod, and the first sliding piece is in sliding connection with the first sliding nut along the axial direction of the first screw rod;
the heating component is slidably sleeved on the first connecting component and the second connecting component and is used for heating the test sample;
The linear movement assembly is fixed on the support assembly, an output shaft of the linear movement assembly is connected with the heating assembly and is used for driving the heating assembly to slide relative to the first connection assembly, the linear movement assembly comprises a second motor, a second screw rod, a second sliding nut, a guide piece, a second fixed block, a conductive block, at least one binding post and at least one copper needle, the second motor is arranged between the third support plate and the second support plate and is connected with the second support plate, the second screw rod is connected with the output shaft of the second motor, the second sliding nut is in threaded connection with the second screw rod, the guide piece comprises a guide rod, two first fixed blocks and a sliding sleeve, the guide rod is arranged between the first support plate and the second support plate, the two first fixed blocks are respectively arranged at two ends of the guide rod and are respectively connected with the guide rod, the sliding sleeve is arranged on the guide rod in a sliding manner, the second fixed block can slide through the sliding hole, the second fixed block is provided with a second mounting hole relative to the second fixed block, the second sliding nut is provided with a second mounting hole relative to the second sliding nut, and the second mounting hole is respectively arranged on the second fixed block; the conducting block is provided with a fourth mounting hole relative to the guide rod, the conducting block is sleeved on the guide rod through the fourth mounting hole and is connected to the second support plate, the inner diameter of the fourth mounting hole is larger than the outer diameter of the guide rod, the binding post is connected to the conducting block, the copper needle is arranged relative to the binding post and is connected to the second fixing block, when the copper needle is abutted to the binding post, the second motor is powered off, and the heating assembly covers a test sample at the middle position.
2. The device of claim 1, wherein the force application assembly comprises a vibration exciter, the vibration exciter is fixed to the support assembly, and a force application end of the vibration exciter can output alternating force.
3. The device of claim 2, 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 first slider and the force application end of the vibration exciter, respectively, and the first connection assembly is connected to the second bracket.
4. The high temperature piezoelectric measurement device of claim 3, wherein the force application assembly further comprises a first pressure sensor connected to the force application end of the vibration exciter and the second bracket, respectively.
5. The device of claim 3, wherein the first connection assembly comprises a first radiating pipe and a first electrode, one end of the first radiating pipe is connected to the second support, the first electrode is disposed at one end of the first radiating pipe far away from the second support and is detachably connected to the first radiating pipe, the second connection assembly comprises a second radiating pipe and a second electrode, the second radiating pipe is disposed above the first radiating pipe, one end of the second radiating pipe is connected to the compression assembly, and the second electrode is disposed between the first radiating pipe and the second radiating pipe and is detachably connected to the second radiating pipe.
6. The device of claim 5, wherein the first connecting assembly further comprises a plurality of first cooling fins, the plurality of first cooling fins are disposed at intervals along the axial direction of the first cooling tube, the first cooling fins are provided with through holes relative to the first cooling tube, and the first cooling fins are fixedly sleeved on the first cooling tube through the through holes.
7. The device of claim 5, wherein the heating assembly comprises a hearth, a heating element and a cover, the hearth is slidably sleeved on the first connecting assembly and the second connecting assembly, the heating element is sleeved on the hearth, and the cover is covered on the heating element.
8. The high-temperature piezoelectric measurement device according to claim 7, wherein the heating assembly further comprises 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 assembly and the second connecting assembly and connected to the hearth and the cover body, the tray is provided with a plurality of threaded holes along the axial direction, the first hearth cover is internally provided with the cover body, the first hearth cover is provided with a first through hole corresponding to the first hearth, the first hearth cover is provided with a plurality of second through holes corresponding to the threaded holes, the second through holes are in one-to-one correspondence with the threaded holes, the first hearth cover is sleeved on the hearth through the first through holes and is arranged at the bottom of the heating member, the second hearth cover is internally provided with a third through hole corresponding to the hearth, the second hearth cover is provided with a plurality of fourth through holes corresponding to the second through holes, the fourth through holes are arranged corresponding to the second through holes and are arranged on the second hearth cover and can be far away from the first threaded hole and the screw nut, the first hearth cover is connected with the first threaded screw nut through the first hearth cover, and the second hearth cover is provided with the threaded screw nut.
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