CN218994945U - CT sample opening displacement measuring device - Google Patents

Abstract

The application relates to a CT sample opening displacement measuring device, it includes the pull rod, lid and cauldron body, lid fixed mounting is in the top side of cauldron body, the internal portion of cauldron is provided with the supporting seat, fixedly connected with bracing piece between lid and the supporting seat, the pull rod runs through the lid, the one end that the pull rod is located the internal portion of cauldron and the equal fixed mounting in one side that the supporting seat is close to the lid have installation component, two installation components are used for installing the CT sample, each installation component all is provided with the conducting rod, conversion mechanism is installed to the one end of conducting rod, the lid is run through to the other end of conducting rod, displacement sensor is installed to the other end of conducting rod, displacement sensor installs in the one side that the lid kept away from the cauldron body, conversion mechanism is used for driving the conducting rod according to the opening of CT sample and goes up and down, displacement sensor is used for producing displacement signal according to the lift of conducting rod. The application has the effect of conveniently detecting under the liquid with high temperature or corrosion.

Description

CT sample opening displacement measuring device

Technical Field

The application relates to the field of material testing equipment, in particular to a CT sample opening displacement measuring device.

Background

The CT specimen is a block of a specific shape made of the material to be detected. When the performance test of the fracture toughness and the fatigue crack growth rate of the material is carried out, an experimental machine is generally adopted to stretch a CT sample, and then the opening size of the CT sample is detected, so that the fracture toughness and the fatigue crack growth rate are obtained. The experimental machine generally comprises a displacement measuring device and a servo loading device, wherein a CT sample is placed in the displacement measuring device, and the CT sample is stretched by providing power through the servo loading device. After the CT sample is stretched, the displacement measuring device detects the fracture toughness and fatigue crack growth rate of the CT sample.

The prior art discloses a CT sample opening measuring device, including pull rod, lid and cauldron body, lid fixed mounting is in the top side of the cauldron body, and the internal portion of cauldron is provided with the supporting seat, fixedly connected with bracing piece between lid and the supporting seat, and the pull rod runs through the lid, and the one end that the pull rod is located the internal portion of cauldron and the supporting seat is close to one side of lid and all fixed mounting have the installation component, and two installation components are used for installing the CT sample. And a COD gauge is arranged between the two installation components. The pull rod is used for stretching the servo loading device, the COD gauge generates a signal according to the opening size of the CT sample and then sends the signal to the server for calculation, so that the opening size of the stretched CT sample block is obtained.

With respect to the related art as described above, the inventors consider that experiments of a part of materials require detection under a liquid having a high temperature or corrosion. And the high-temperature or corrosive liquid can damage the COD gauge, so that the COD gauge cannot detect under the high-temperature or corrosive liquid.

Disclosure of Invention

In order to facilitate detection under high-temperature or corrosive liquid, the application provides a CT sample opening displacement measuring device.

The application provides a CT sample opening displacement measuring device adopts following technical scheme:

the utility model provides a CT sample opening displacement measuring device, includes pull rod, lid and cauldron body, lid fixed mounting is in the top side of cauldron body, the internal portion of cauldron is provided with the supporting seat, fixedly connected with bracing piece between lid and the supporting seat, the pull rod runs through the lid, the one end that the pull rod is located the internal portion of cauldron and the one side that the supporting seat is close to the lid are all fixed mounting have installation component, two installation component is used for installing the CT sample, every installation component all is provided with the conducting rod, conversion mechanism is installed to the one end of conducting rod, the other end of conducting rod runs through the lid, displacement sensor is installed to the other end of conducting rod, displacement sensor installs in one side that the cauldron body was kept away from to the lid, conversion mechanism is used for driving the conducting rod according to the opening of CT sample and goes up and down, displacement sensor is used for producing the displacement signal according to the lift of conducting rod.

By adopting the technical scheme, the CT sample is placed between the two mounting assemblies, and then the servo loading device pulls the mounting assemblies through the pull rod, so that the CT sample is stretched. When the CT sample is stretched, the opening of the CT sample is gradually increased, so that the conversion mechanism drives the conductive rod to lift. The displacement sensor generates a displacement signal according to the position of the guide rod and sends the displacement signal to the server for calculation, so that the size of the CT sample opening is obtained. The displacement sensor is arranged outside the kettle body, so that the condition that liquid inside the kettle body damages the displacement sensor is reduced, and the detection is convenient under the condition of high temperature or corrosive liquid.

Optionally, the installation component includes installation piece and bolt, one of them installation piece and the one end fixed connection that the pull rod is close to the supporting seat of installation component, another installation piece and one side fixed connection that the supporting seat is close to the pull rod of installation component, two the through groove has been seted up to one side that the installation piece was faced each other, the through-hole that supplies the bolt to wear to establish has all been seted up to the installation piece relative both sides, through-hole and through groove intercommunication are put to the placing, the bolt is used for running through CT sample and is located the inside part of through groove.

Through adopting above-mentioned technical scheme, put into two places through groove insidely with the CT sample, later the bolt passes the through-hole and runs through the CT sample to make the CT sample install between two installation pieces, and then conveniently fix the CT sample at the internal portion of cauldron.

Optionally, the conversion mechanism includes connecting plate, bolt, backup pad, compresses tightly subassembly and conversion subassembly, the bolt is used for being connected connecting plate and CT sample, one side fixed connection that CT sample was kept away from with the connecting plate to one side of backup pad, the conduction hole that supplies the conduction pole to wear to establish is offered to the backup pad, the diameter of conduction hole is greater than the diameter of conduction pole, compress tightly subassembly and conversion subassembly all install in the conduction pole, compress tightly the subassembly and be located one side that the lid was kept away from to the backup pad, conversion subassembly is located one side that the backup pad is close to the lid, compress tightly the subassembly and be used for driving the backup pad and tightly support conversion subassembly, conversion subassembly is used for supplying the backup pad to promote the conduction pole and goes up and down.

By adopting the technical scheme, the opening of the CT sample gradually becomes larger under the stretching, and the CT sample block drives the supporting plate to move through the connecting plate. The supporting plate compresses tightly the conversion component under the drive of compressing tightly the subassembly to make the backup pad drive the conducting rod through the conversion component and go up and down. When the CT sample drives the supporting plate to move, the supporting plate rotates and is converted into lifting in the vertical direction through the conversion assembly, so that the lifting of the conductive rod is facilitated.

Optionally, the compression assembly includes first nut and spring, first nut thread bush is located the conducting rod, the conducting rod is all located to the spring cover, the spring tightly supports between backup pad and first nut.

Through adopting above-mentioned technical scheme, the spring receives the extrusion shrink of first nut and backup pad to make the spring promote the backup pad and tightly support conversion component, and then make things convenient for the backup pad to drive the conducting rod through conversion component and go up and down.

Optionally, the compressing assembly further includes a sleeve, the sleeve is sleeved on the conductive rod, the sleeve is located between the support plate and the first nut, and the spring is located inside the sleeve.

Through adopting above-mentioned technical scheme, the sleeve is used for restricting the spring to reduce the spring and receive the crooked condition appearance of back to the week side behind the extrusion.

Optionally, the conversion component includes second nut and switching-over piece, second nut thread bush is located the conducting rod, switching-over piece fixed mounting is close to one side of backup pad in the second nut, the conducting rod runs through the switching-over piece, the distance between the opposite both sides wall of switching-over piece reduces gradually and is triangle-shaped setting by being close to second nut one side to opposite side, the closed angle logical groove that the closed angle of confession switching-over piece was worn to establish is offered to the backup pad, the distance between the two inside walls of closed angle logical groove is triangle-shaped setting by being close to second nut one side to opposite side gradually, the contained angle between the two inside walls of closed angle logical groove is greater than the contained angle between the opposite both sides wall of switching-over piece.

By adopting the technical scheme, when the CT sample drives the supporting plate to rotate, the sharp angle of the reversing block is extruded with the inner wall of the sharp angle through groove. Meanwhile, the included angle between the two inner side walls of the sharp-angle through groove is larger than the included angle between the two opposite side walls of the reversing block, and the reversing block is sleeved on the conductive rod, so that the sharp angle of the reversing block can conveniently move upwards after being extruded by the inner wall of the sharp-angle through groove. And then the reversing block drives the conducting rod to lift through the second nut, so that the rotation of the supporting plate is converted into the driving of the conducting rod to lift.

Optionally, dodge the groove has been seted up to one side that the backup pad kept away from the lid, dodge the groove and be used for supplying the backup pad to avoid the bolt.

Through adopting above-mentioned technical scheme, when passing through the bolt with the connecting plate and being connected with the CT sample, dodge the groove and avoid the bolt to make things convenient for the bolt to run through backup pad and CT sample and fix.

Optionally, the conducting rod comprises a first sub-rod, a second sub-rod and a clamp, wherein one end of the first sub-rod is connected with the displacement sensor, one end of the second sub-rod is connected with the conversion mechanism, and the clamp is clamped between the first sub-rod and the second sub-rod.

Through adopting above-mentioned technical scheme, the liquid level that has the liquid of corruption in the cauldron body keeps being less than first sub-pole and clip to reduce the condition that first sub-pole and clip damaged and appear. And after the second sub-rod is soaked in the liquid and damaged, the clamp is taken down, and a new second sub-rod is connected with the clamp, so that the second sub-rod is convenient to replace.

In summary, the present application includes at least one of the following beneficial technical effects:

1. the displacement sensor is arranged outside the kettle body, and then the opening change of the CT sample is transmitted to the displacement sensor through the conversion mechanism and the conductive rod, so that the displacement sensor can conveniently generate displacement information according to the opening of the CT sample, and then the displacement information is transmitted to the server to calculate the opening size of the CT sample, and meanwhile, the condition that liquid in the kettle body damages the displacement sensor is reduced, and further, the detection is conveniently carried out under the condition of high temperature or corrosive liquid;

2. through the cooperation of switching-over piece and closed angle logical groove to the convenience is changed the rotation with the backup pad into drive the conducting rod and is gone up and down.

Drawings

FIG. 1 is a schematic overall structure of an embodiment of the present application;

FIG. 2 is a schematic view of the structure of FIG. 1 with the tank removed;

FIG. 3 is an exploded view of a mounting assembly according to an embodiment of the present application;

FIG. 4 is a schematic diagram of the conversion mechanism, the conductive rod and the displacement sensor according to the embodiment of the present application;

fig. 5 is a schematic view of the structure of the conversion mechanism and the conductive rod according to the embodiment of the present application.

Reference numerals illustrate: 1. a kettle body; 2. a cover body; 3. a pull rod; 4. a support base; 5. a support rod; 6. a mounting assembly; 61. a mounting block; 62. a plug pin; 7. placing a through groove; 8. a CT sample; 9. a through hole; 10. a conductive rod; 101. a first sub-lever; 102. a second sub-lever; 103. a clip; 11. a displacement sensor; 12. a conversion mechanism; 121. a connecting plate; 122. a bolt; 123. a support plate; 124. a compression assembly; 1241. a sleeve; 1242. a first nut; 1243. a spring; 125. a conversion assembly; 1251. a second nut; 1252. a reversing block; 13. a conductive via; 14. sharp angle through groove; 15. avoiding the groove.

Detailed Description

The present application is described in further detail below in conjunction with figures 1-5.

The embodiment of the application discloses a CT sample opening displacement measuring device.

Referring to fig. 1, a device for measuring displacement of an opening of a CT sample comprises a vessel 1 and a cover 2 mounted on the top side of the vessel 1. The cover body 2 is provided with a pull rod 3, and the pull rod 3 penetrates through the cover body 2. The pull rod 3 is used for the servo loading device to stretch.

Referring to fig. 2, a support seat 4 is provided inside the kettle body 1, and a support rod 5 is fixedly installed between the support seat 4 and the cover body 2. One end of the pull rod 3 positioned in the kettle body 1 and one side of the supporting seat 4 close to the cover body 2 are both provided with a mounting component 6.

Referring to fig. 2 and 3, the mounting assembly 6 includes a mounting block 61 and a latch 62. One mounting block 61 is fixedly connected with one end of the pull rod 3, which is positioned in the kettle body 1, and the other mounting block 61 is fixedly connected with one side of the supporting seat 4, which is close to the cover body 2. The two mounting blocks 61 are provided with a placing through groove 7 on one side facing each other. The CT sample 8 has an opening. The CT sample 8 is divided into two parts by taking the opening as a boundary, and is respectively positioned in the placing through groove 7. Through holes 9 for inserting bolts 62 are formed in two opposite sides of the mounting block 61, and the through holes 9 are communicated with the placing through grooves 7. The pins 62 penetrate through the through holes 9 and penetrate through the portions of the CT specimen 8 located inside the placement through grooves 7, thereby fixing the CT specimen 8 to the two mounting blocks 61.

Referring to fig. 2, each of the mounting blocks 61 is provided with a conductive rod 10, and the conductive rod 10 penetrates the cover 2. The displacement sensor 11 is installed to the one end that the conduction pole 10 is located the cauldron body 1 outside. The displacement sensor 11 is fixedly arranged on one side of the cover body 2 far away from the kettle body 1. One end of the conductive rod 10, which is positioned inside the kettle body 1, is provided with a conversion mechanism 12. The conversion mechanism 12 is used for connecting the conductive rod 10 with the CT sample 8, and the change of the size of the opening of the CT sample 8 drives the conductive rod 10 to lift through the conversion mechanism 12. The two displacement sensors 11 generate displacement signals according to the lifting of the guide rod 10, and send the displacement signals to the server for calculation, so that the size of the opening of the CT sample 8 is obtained.

Referring to fig. 4 and 5, the conversion mechanism 12 includes a connection plate 121, a bolt 122, a support plate 123, a pressing assembly 124, and a conversion assembly 125. The bolt 122 penetrates through the connecting plate 121 and then is screwed into the CT sample 8, so that the connecting plate 121 and the CT sample 8 are fixedly connected. The support plate 123 is fixedly mounted on the side of the connection plate 121 remote from the CT sample 8. The side of the supporting plates 123 far away from the cover body 2 is provided with avoiding grooves 15, and the avoiding grooves 15 positioned on the two supporting plates 123 are symmetrically arranged. The avoidance groove 15 facilitates the screw 122 to be screwed into the CT sample 8 after passing through the connecting plate 121.

Referring to fig. 4 and 5, the support plate 123 is provided with a guide hole 13 through which the guide rod 10 is inserted, and the guide hole 13 has a diameter larger than that of the guide rod 10. The compression assembly 124 includes a sleeve 1241, a first nut 1242, and a spring 1243, the first nut 1242 is threadedly engaged with the conductive rod 10, and the sleeve 1241 and the spring 1243 are engaged with the conductive rod 10. The first nut 1242 is located at a side of the support plate 123 remote from the cover 2, the sleeve 1241 and the spring 1243 are located between the first nut 1242 and the support plate 123, and the spring 1243 is located inside the sleeve 1241. The spring 1243 is abutted between the support plate 123 and the first nut 1242. The sleeve 1241 serves to restrain the spring 1243, thereby reducing the occurrence of bending to the circumferential side when the spring 1243 is compressed.

Referring to fig. 4 and 5, the conversion assembly 125 includes a second nut 1251 and a reversing block 1252, and the second nut 1251 is threadedly engaged with the conductive rod 10. The reversing block 1252 is fixedly mounted to a side of the second nut 1251 adjacent to the support plate 123, and the conductive rod 10 extends through the reversing block 1252. The distance between the opposite side walls of the reversing block 1252 is gradually reduced from one side to the other side near the second nut 1251 to form a triangle. The supporting plate 123 is provided with a sharp angle through groove 14 for the sharp angle of the reversing block 1252 to pass through, and the distance between the two inner side walls of the sharp angle through groove 14 is gradually reduced from one side close to the second nut 1251 to the other side and is in a triangular shape. The angle between the two inner sidewalls of the pointed through slot 14 is greater than the angle between the opposite sidewalls of the reversing block 1252.

After the CT sample 8 is stretched, the opening of the CT sample 8 is increased, thereby driving the support plate 123 to turn over. When the supporting plate 123 is turned over, the inner wall of the sharp-angle through groove 14 and the sharp angle of the reversing block 1252 are mutually extruded, and meanwhile, the included angle between the two inner walls of the sharp-angle through groove 14 is larger than the included angle between the two opposite side walls of the reversing block 1252, so that the reversing block 1252 moves upwards. The reversing block 1252 drives the conductive rod 10 to lift through the second nut 1251, thereby facilitating the conversion of the turning movement of the supporting plate 123 into the lifting movement of the conductive rod 10.

Referring to fig. 4, the conductive rod 10 includes a first sub-rod 101, a second sub-rod 102, and a clip 103, one end of the first sub-rod 101 is connected to the displacement sensor 11, one end of the second sub-rod 102 is connected to the switching mechanism 12, and the clip 103 is clamped between the first sub-rod 101 and the second sub-rod 102. After the liquid is injected into the kettle body 1, the water level of the liquid is lower than that of the first sub-rod 101 and the clamp 103, so that the first sub-rod 101 and the clamp 103 are damaged by the liquid. After the second sub-rod 102 is damaged by being immersed in the liquid, the clip 103 is opened, and the second sub-rod 102 is taken out. The new second sub-lever 102 is then re-clamped by the clamp 103, thereby facilitating replacement of the second sub-lever 102.

First data obtained by measuring the opening size of the CT sample 8 in a liquid having no corrosion at normal temperature by the COD scale. The displacement sensor 11 detects the opening size of the CT sample 8 under the same environment as the COD gauge to obtain second data. By finding out the correlation between the first data and the second data, the data detected by the displacement sensor 11 is then converted so that the data detected by the displacement sensor 11 is identical to the COD gauge.

The implementation principle of the CT sample opening displacement measuring device in the embodiment of the application is as follows: after the CT specimen 8 is stretched, the opening increases, and the change in the opening of the CT specimen 8 is transmitted to the displacement sensor 11 through the switching mechanism 12 and the conductive rod 10. The two displacement sensors 11 detect the lifting of the conductive rod 10 to generate a displacement signal and then transmit the displacement signal to the server. The server calculates the size of the opening of the CT sample 8 based on the displacement signal. When detecting CT sample 8 opening, displacement sensor 11 is located the cauldron body 1 outside to reduce the condition that displacement sensor 11 received the inside liquid of cauldron body 1 to destroy appears, and then conveniently detect under the liquid that the temperature is high or have the corruption.

The foregoing are all preferred embodiments of the present application, and are not intended to limit the scope of the present application in any way, therefore: all equivalent changes in structure, shape and principle of this application should be covered in the protection scope of this application.

Claims (8)

1. A CT specimen aperture displacement measurement device, characterized in that: including pull rod (3), lid (2) and cauldron body (1), lid (2) fixed mounting is in the top side of cauldron body (1), the inside supporting seat (4) that is provided with of cauldron body (1), fixedly connected with bracing piece (5) between lid (2) and supporting seat (4), pull rod (3) run through lid (2), one side that one end and supporting seat (4) that pull rod (3) are located cauldron body (1) are close to lid (2) is equal fixed mounting have installation component (6), two installation component (6) are used for installing CT sample (8), each installation component (6) all are provided with conducting rod (10), conversion mechanism (12) are installed to the one end of conducting rod (10), the other end of conducting rod (10) runs through lid (2), displacement sensor (11) are installed to the other end of conducting rod (10), displacement sensor (11) are installed in one side that lid (2) kept away from cauldron body (1), conversion mechanism (6) are used for installing CT sample (8) and are used for carrying out lifting and lowering down in signal sensor (10) according to the displacement sensor (10).

2. A CT specimen aperture displacement measurement device according to claim 1, wherein: the installation component (6) is including installation piece (61) and bolt (62), one of them installation piece (61) of installation component (6) is close to the one end fixed connection of supporting seat (4) with pull rod (3), another installation piece (61) of installation component (6) is close to one side fixed connection of pull rod (3) with supporting seat (4), two place logical groove (7) have been seted up to one side that installation piece (61) was faced each other, through-hole (9) that supply bolt (62) to wear to establish are all seted up to the opposite both sides of installation piece (61), through-hole (9) and place logical groove (7) intercommunication, bolt (62) are used for running through CT sample (8) and are located the inside part of placing logical groove (7).

3. A CT specimen aperture displacement measurement device according to claim 1, wherein: the utility model provides a conversion mechanism (12) includes connecting plate (121), bolt (122), backup pad (123), compresses tightly subassembly (124) and conversion subassembly (125), bolt (122) are used for connecting plate (121) with CT sample (8), one side of backup pad (123) is kept away from one side fixed connection of CT sample (8) with connecting plate (121), conduction hole (13) that supply conduction pole (10) to wear to establish are seted up to backup pad (123), the diameter of conduction hole (13) is greater than the diameter of conduction pole (10), compress tightly subassembly (124) and conversion subassembly (125) all install in conduction pole (10), compress tightly one side that cover (2) was kept away from to subassembly (124) in backup pad (123), conversion subassembly (125) are located one side that backup pad (123) are close to cover (2), compress tightly subassembly (124) and are used for driving backup pad (123) tightly to support conversion subassembly (125), conversion subassembly (125) are used for supplying backup pad (123) to promote conduction pole (10) to go up and down.

4. A CT specimen aperture displacement measurement device according to claim 3, wherein: the compression assembly (124) comprises a first nut (1242) and a spring (1243), the first nut (1242) is sleeved on the conductive rod (10) in a threaded mode, the spring (1243) is sleeved on the conductive rod (10), and the spring (1243) is tightly abutted between the supporting plate (123) and the first nut (1242).

5. The CT specimen opening displacement measurement device according to claim 4, wherein: the compression assembly (124) further comprises a sleeve (1241), the sleeve (1241) is sleeved on the conductive rod (10), the sleeve (1241) is located between the support plate (123) and the first nut (1242), and the spring (1243) is located inside the sleeve (1241).

6. A CT specimen aperture displacement measurement device according to claim 3, wherein: the conversion assembly (125) comprises a second nut (1251) and a reversing block (1252), the second nut (1251) is sleeved on the conducting rod (10) in a threaded mode, the reversing block (1252) is fixedly installed on one side, close to the supporting plate (123), of the second nut (1251), the conducting rod (10) penetrates through the reversing block (1252), the distance between two opposite side walls of the reversing block (1252) is gradually reduced to be triangular from one side, close to the second nut (1251), of the second nut to the other side, a sharp angle through groove (14) for penetrating a sharp angle of the reversing block (1252) is formed in the supporting plate (123), the distance between two inner side walls of the sharp angle through groove (14) is gradually reduced to be triangular from one side, close to the second nut (1251), and an included angle between two inner side walls of the sharp angle through groove (14) is larger than an included angle between two opposite side walls of the reversing block (1252).

7. A CT specimen aperture displacement measurement device according to claim 3, wherein: one side of the supporting plate (123) far away from the cover body (2) is provided with an avoidance groove (15), and the avoidance groove (15) is used for enabling the supporting plate (123) to avoid the bolt (122).

8. A CT specimen aperture displacement measurement device according to claim 1, wherein: the conductive rod (10) comprises a first sub-rod (101), a second sub-rod (102) and a clamp (103), one end of the first sub-rod (101) is connected with the displacement sensor (11), one end of the second sub-rod (102) is connected with the conversion mechanism (12), and the clamp (103) is clamped on the first sub-rod (101) and the second sub-rod (102).

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