CN117007444A - A elongation after break measuring device for tensile test - Google Patents
A elongation after break measuring device for tensile test Download PDFInfo
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- CN117007444A CN117007444A CN202310909858.9A CN202310909858A CN117007444A CN 117007444 A CN117007444 A CN 117007444A CN 202310909858 A CN202310909858 A CN 202310909858A CN 117007444 A CN117007444 A CN 117007444A
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- 238000009864 tensile test Methods 0.000 title claims abstract description 17
- 238000005259 measurement Methods 0.000 claims abstract description 6
- 238000003825 pressing Methods 0.000 claims description 14
- 238000001514 detection method Methods 0.000 abstract description 7
- 230000009286 beneficial effect Effects 0.000 abstract description 2
- 230000006872 improvement Effects 0.000 description 6
- 238000009434 installation Methods 0.000 description 5
- 238000000034 method Methods 0.000 description 5
- 239000007769 metal material Substances 0.000 description 4
- 230000008569 process Effects 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- 230000003068 static effect Effects 0.000 description 3
- 230000006835 compression Effects 0.000 description 2
- 238000007906 compression Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000003993 interaction Effects 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 238000007665 sagging Methods 0.000 description 2
- 238000012360 testing method Methods 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 230000000712 assembly Effects 0.000 description 1
- 238000000429 assembly Methods 0.000 description 1
- 238000013142 basic testing Methods 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
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- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 238000005482 strain hardening Methods 0.000 description 1
- 238000004154 testing of material Methods 0.000 description 1
- 230000007704 transition Effects 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
- G01N3/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N3/28—Investigating ductility, e.g. suitability of sheet metal for deep-drawing or spinning
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N3/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N3/02—Details
- G01N3/04—Chucks
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
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Abstract
The application discloses a device for measuring the elongation after fracture for a tensile test, which comprises a base, wherein at least one sample clamping frame is arranged on two sides of the base, sliding grooves are formed in the sample clamping frames, broken samples are respectively arranged in the sliding grooves in a sliding manner, and a positioning assembly for controlling the mounting position of the samples is also arranged in the sliding grooves; the measuring device further comprises a pushing device, a driving device and a measuring assembly, wherein one end of the pushing device is in power connection with the driving device, and the other end of the pushing device is abutted against the sample so as to push the two broken samples to be mutually close and spliced; the measuring assembly is connected with the base; compared with the prior art, the application can ensure that the broken samples are accurately spliced along the axial direction, provide powerful guarantee for subsequent measurement and is beneficial to improving the detection precision of the broken samples.
Description
Technical Field
The application relates to the technical field of detection equipment, in particular to a device for measuring the elongation after break for a tensile test.
Background
The metal tensile test is the most basic test in mechanical properties, and is also one of important test items for checking metal materials and characterizing the intrinsic quality of the metal materials. The tensile property of the metal is not only an important index for evaluating the metal material, but also a main basis for mechanical manufacturing, engineering design and material selection. The basic mechanical property indexes of the metal material under the unidirectional static stretching condition, such as elastic modulus, poisson ratio, yield strength, specified non-proportional extension strength, tensile strength, elongation after break, area shrinkage, strain hardening index, plastic strain ratio and the like, can be measured through a tensile test.
The test principle is that a tensile sample is arranged on a material testing machine, axial force F is slowly and uniformly applied, the deformation process of the sample under the action of external force is observed and measured until the sample breaks, then the broken sample is spliced and the length of the spliced sample is measured, and the elongation of the sample can be calculated by combining the length of the sample before stretching, but in the prior art, the splicing of the broken sample is generally realized manually by a person skilled in the art, the splicing precision is poor, the stability after splicing is poor, and the measurement precision of the length after stretching is poor.
Disclosure of Invention
The application mainly aims to provide a device and a method for measuring the elongation after break for a tensile test, which aim to solve the defect of poor detection precision in the prior art.
The application realizes the aim through the following technical scheme:
a breaking elongation measuring device for tensile test comprises a base;
the sample clamping frames are respectively arranged at two sides of the base, sliding grooves are formed in the sample clamping frames, and broken samples are respectively arranged in the sliding grooves in a sliding manner; the chute is also internally provided with a positioning component for controlling the installation position of the sample;
the pushing device is arranged on the base in a sliding manner;
the driving device is connected with the pushing device and drives the pushing device to push the two broken samples to be mutually close and spliced;
and the measuring assembly is connected with the sample clamping frame in a sliding manner.
Optionally, the base is further provided with a plurality of sleeves, one end of each sleeve is connected with an adjusting screw in a threaded manner, and the other end of each sleeve is sleeved with a supporting cap in a sliding manner; and a buffer spring is further arranged in the sleeve, and two ends of the buffer spring are respectively abutted against the supporting cap and the adjusting screw.
Optionally, the sample clamping frame comprises a base and a movable pressing plate, wherein a plurality of sliding rods are arranged on the base, and one end of the movable pressing plate is respectively connected with each sliding rod in a sliding manner; and the slide bar is also provided with a limit spring and a limit nut.
Optionally, the positioning assembly comprises a positioning chute and a positioning slide bar which are matched with each other, and the positioning chute and the positioning slide bar are respectively arranged on the chute and the sample.
Optionally, the pushing component comprises a center, a support frame and an elastic carriage, wherein the center is slidably connected with the support frame; one end of the center is abutted with the sample, a pushing sleeve is arranged on the elastic sliding frame, and the center is abutted with the pushing sleeve.
Optionally, lifting plates are arranged on the support frame and the elastic sliding frame, and fixing screws are arranged on the lifting plates; the support frame is provided with a lifting plate, and the lifting plate is provided with a fixing screw rod; the pushing sleeve is provided with a slot matched with the elastic sliding frame; the support frame is provided with a lifting groove matched with the center.
Optionally, the drive assembly includes power continuous driving motor and drive lead screw, be provided with the drive groove on the base, the last screw thread of drive lead screw is connected with the actuating lever, the one end of actuating lever passes the drive groove with elasticity balladeur train links to each other.
Optionally, the pushing assembly further comprises an adjusting sleeve connected with the pushing sleeve through threads; an adjusting spring is arranged in the adjusting sleeve, a contact switch is further arranged on the pushing sleeve, a trigger piece opposite to the contact switch is arranged at the top of the elastic sliding frame, and two ends of the adjusting spring are respectively abutted to the elastic sliding frame and the adjusting sleeve.
Optionally, pushing components are arranged on two sides of the base, the driving rod comprises a left driving rod and a right driving rod, the driving screw rod is respectively connected with the left driving rod and the right driving rod through threads with opposite rotation directions, and the left driving rod and the right driving rod are respectively connected with the elastic sliding frames on the corresponding sides.
Optionally, the measuring assembly includes a caliper and a support that are connected to each other, and the support is connected to any one of the sample holders by a slide rail and a slide block that are matched with each other.
Compared with the prior art, the application has the following beneficial effects:
the application comprises a base, wherein at least one sample clamping frame is arranged on two sides of the base, sliding grooves are arranged on the sample clamping frames, broken samples are respectively arranged in the sliding grooves in a sliding manner, and a positioning assembly for controlling the mounting position of the samples is also arranged in the sliding grooves; the measuring device further comprises a pushing device, a driving device and a measuring assembly, wherein one end of the pushing device is in power connection with the driving device, and the other end of the pushing device is abutted against the sample so as to push the two broken samples to be mutually close and spliced; the measuring assembly is connected with the base;
when the device is used, broken samples are respectively placed in sample clamping frames at two sides of the base, and the broken samples are positioned through the positioning assembly, so that the accurate installation of the samples is realized, and the coaxiality between the two samples is ensured;
after the installation is finished, the pushing device is abutted against the end face of the sample, and meanwhile, the driving device drives the pushing device to slide towards the direction close to the other sample, so that the two samples are pushed to be close to each other along the axial direction until the two samples are completely spliced; finally, the length of the spliced sample is measured through the sliding of the measuring assembly, so that the elongation is measured;
compared with the prior art, the application ensures the stable position of the sample through the sample clamping frame, simultaneously ensures that the broken sample can only slide along the axial direction due to the limitation of the sample clamping frame, and the positioning component ensures the coaxiality of the sample, and simultaneously avoids the rotation of the sample around the axial direction, thereby ensuring the matching degree between the sections, so that compared with the hand-held splicing mode of the person skilled in the art, the stability and the precision of the sample splicing are higher;
secondly, through the cooperation of the driving device and the pushing device, the automatic splicing of the fracture sample is realized, the hands of the person in the field are liberated, the person in the field can have more efforts to judge whether the splicing is accurate or not and correct the misoperation in the splicing process, and the improvement of the splicing precision is facilitated;
finally, due to improvement of splicing accuracy, the sections among the fracture samples after the completion of splicing can be perfectly spliced, so that the splicing effect of the samples is guaranteed, powerful guarantee is provided for subsequent measurement, and improvement of the detection accuracy of the fracture samples is facilitated.
Drawings
Fig. 1 is a schematic structural diagram of a device for measuring elongation after break according to embodiment 1 of the present application;
fig. 2 is an operation state diagram of a device for measuring elongation after break according to embodiment 1 of the present application;
FIG. 3 is a schematic illustration of a pushing assembly;
FIG. 4 is a schematic view of the sleeve and support cap assembly;
fig. 5 is a side view of a sample holder.
Reference numerals: the device comprises a 1-base, a 2-sample clamping frame, a 3-sliding chute, a 4-sleeve, a 5-adjusting screw, a 6-supporting cap, a 7-buffer spring, an 8-positioning sliding chute, a 9-positioning sliding bar, a 10-center, a 11-supporting frame, a 12-elastic sliding frame, a 13-pushing sleeve, a 14-lifting plate, a 15-fixing screw, a 16-inserting slot, a 17-lifting slot, a 18-driving motor, a 19-driving screw, a 20-driving slot, a 21-driving rod, a 22-adjusting sleeve, a 23-adjusting spring, a 24-contact switch, a 25-triggering piece, a 26-left driving rod, a 27-right driving rod, a 28-caliper, a 29-supporting frame, a 30-sliding rail, a 31-sliding block, a 201-base, a 202-movable pressing plate, a 203-sliding bar, a 204-limiting spring and a 205-limiting nut.
The achievement of the objects, functional features and advantages of the present application will be further described with reference to the accompanying drawings, in conjunction with the embodiments.
Detailed Description
The following description of the embodiments of the present application will be made clearly and fully with reference to the accompanying drawings, in which it is evident that the embodiments described are only some, but not all embodiments of the application. All other embodiments, which can be made by those skilled in the art based on the embodiments of the application without making any inventive effort, are intended to be within the scope of the application.
It should be noted that all directional indicators (such as up, down, left, right, front, and rear … …) in the embodiments of the present application are merely used to explain the relative positional relationship, movement, etc. between the components in a particular posture (as shown in the drawings), and if the particular posture is changed, the directional indicator is changed accordingly.
In the present application, unless specifically stated and limited otherwise, the terms "connected," "affixed," and the like are to be construed broadly, and for example, "affixed" may be a fixed connection, a removable connection, or an integral body; can be mechanically or electrically connected; either directly or indirectly, through intermediaries, or both, may be in communication with each other or in interaction with each other, unless expressly defined otherwise. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art according to the specific circumstances.
In addition, if there is a description of "first", "second", etc. in the embodiments of the present application, the description of "first", "second", etc. is for descriptive purposes only and is not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include at least one such feature. In addition, the meaning of "and/or" as it appears throughout includes three parallel schemes, for example "A and/or B", including the A scheme, or the B scheme, or the scheme where A and B are satisfied simultaneously. In addition, the technical solutions of the embodiments may be combined with each other, but it is necessary to base that the technical solutions can be realized by those skilled in the art, and when the technical solutions are contradictory or cannot be realized, the combination of the technical solutions should be considered to be absent and not within the scope of protection claimed in the present application.
Embodiment 1
Referring to fig. 1 to 3, this embodiment, which is an alternative embodiment of the present application, discloses a post-breaking elongation measuring device for tensile test, comprising a base 1, at least one sample holder 2 being provided on both sides of the base 1 along a length direction of the base 1, wherein one sample holder 2 is preferably provided on each side;
a plurality of sleeves 4 are arranged between the two sample clamping frames 2, and meanwhile, the base 1 is provided with connecting holes with the same number, and each sleeve 4 is respectively inserted into each connecting hole; the two ends of the sleeve 4 are opened, the top of the sleeve is in sliding sleeve connection with a supporting cap 6, a supporting sheet is arranged in the supporting cap 6, the bottom of the sleeve 4 is in threaded connection with an adjusting screw 5, a buffer spring 7 is arranged in the sleeve 4, and two ends of the buffer spring 7 respectively abut against the supporting sheet and the adjusting screw 5;
the device is positioned in the middle of the base 1, so that the support cap 6 can provide support for the suspended splicing ends of all samples, and the suspended splicing ends of the samples are prevented from sagging, so that the two samples can be spliced with each other in a coaxial state, and the splicing precision is improved;
meanwhile, the supporting cap 6 can be controlled to ascend or descend through the adjusting nut, so that the supporting requirements of samples with different structures are met, and the application range of the equipment is widened.
Each sample clamping frame 2 comprises a base 1 and a movable pressing plate 202, wherein the base 1 is of an L-shaped structure, a plurality of sliding rods 203 are arranged on the vertical edge of the base 1, the movable pressing plate 202 is arranged on the base 1, one end of the movable pressing plate is suspended, the other end of the movable pressing plate is respectively connected with each sliding rod 203 in a sliding manner, a limit spring 204 and a limit nut 205 are further arranged on the sliding rods 203, the limit nut 205 is positioned at the top of the sliding rods 203, and two ends of the limit spring 204 respectively abut against the movable pressing plate 202 and the limit nut 205;
the space between the base 1 and the movable pressing plate 202 is a chute 3, and the chute 3 is a structure with an opening on one side; the cross section of the chute 3 is square; the measuring device further comprises a positioning assembly, wherein the positioning assembly comprises a positioning chute 8 and a positioning slide bar 9, and the positioning chute 8 and the positioning slide bar 9 are respectively arranged on the chute 3 and the sample; it should be noted that the setting positions of the positioning chute 8 and the positioning slide 9 are not fixed, and can be adjusted as required by those skilled in the art;
the positioning chute 8 is arranged along the sliding direction of the sample, and the cross section of the positioning chute is of a V-shaped structure; the positioning slide bar 9 is matched with the positioning slide groove 8, and the cross section of the positioning slide bar is also of a V-shaped structure; meanwhile, it should be noted that the cross sections of the positioning chute 8 and the positioning slide bar 9 may be other structures which are convenient to install, such as square structures;
the sample clamping frame 2 with the structure has a certain activity allowance, so that the height of the movable pressing plate 202 can be adjusted according to the needs to meet different clamping requirements; on the other hand, the movable pressing plate 202 is tightly attached to the top surface of the sample by the downward pressure of the limiting spring 204, so that the stability of the sample is ensured, the free end of the sample is prevented from sagging, and the coaxiality of the sample is further influenced;
secondly, the cross section of the chute 3 is of a square structure, compared with a traditional circular structure, the bottom surface of the square chute 3 is of a flat plate structure, the structure of the corresponding part of a sample is synchronously changed, the stability of supporting the sample can be effectively improved, the two samples can be effectively ensured to slide along the axial direction by matching with the positioning chute 8 and the positioning slide bar 9, splicing is further completed, coaxiality control can be realized by processing the positions of the positioning chute 8 and the positioning slide bar 9, and the sample can be rapidly positioned and installed by the positioning chute 8 and the positioning slide bar 9, so that the efficiency of sample splicing is improved as much as possible, and the detection efficiency is further improved;
finally, the chute 3 with the square structure and the sample can avoid the sample from rotating around the axial square, so that the matching degree between the sections of the sample is ensured, the sample can be spliced once, and the splicing efficiency is improved.
The measuring device further comprises a measuring assembly, a sliding rail 30 is arranged at the top of any movable pressing plate 202, the measuring assembly comprises a caliper 28 and a bracket 29, the caliper 28 is arranged on the bracket 29, and the bracket 29 is slidably connected with the sliding rail 30 through a sliding block 31;
the mounting mode ensures that the measuring assembly is positioned right above the sample, is convenient to adjust and observe, and further ensures the measuring precision; meanwhile, the sliding structure ensures that the zero position of the caliper 28 can be adjusted according to the requirement, so that the detection requirements of samples with different lengths are met;
the measuring device further comprises a pushing assembly and a driving assembly, wherein the pushing assembly comprises a center 10, a supporting frame 11 and a flexible sliding frame 12, a pushing sleeve 13 is arranged on the flexible sliding frame 12, and the pushing sleeve 13 and the center 10 are abutted against each other;
a lifting plate 14 is arranged on the supporting frame 11 in a sliding manner, and a fixed screw 15 is arranged on the lifting plate 14; the supporting frame 11 is provided with a lifting groove 17 matched with the center 10, the lifting groove 17 is a kidney-shaped groove, the center 10 is slidably inserted into the kidney-shaped groove, the tip of the center 10 is opposite to the end face of the sample, and a center hole is formed in the end face of the sample; the center 10 is placed on the lifting plate 14;
the height of the center 10 is adjusted through the lifting plate 14, so that the center 10 is always coaxial with the center 10 hole, and the pushing requirements of samples with different sizes are met;
the pushing sleeve 13 is provided with a slot 16 matched with the elastic sliding frame 12, and the top of the elastic sliding frame 12 passes through the slot 16 and extends out to the upper side of the pushing sleeve 13; meanwhile, a supporting plate is further arranged on the elastic sliding frame 12, the supporting plate is connected with the elastic sliding frame 12 through bolts, and the pushing sleeve is placed on the supporting plate; after the height of the center is adjusted, whether to replace the elastic carriage 12 is selected according to actual conditions.
The driving assembly comprises a driving motor 18 and a driving screw rod 19 which are connected with each other in a power mode, a driving groove 20 is formed in the base 1, a driving rod 21 is connected to the driving screw rod 19 in a threaded mode, and one end of the driving rod 21 penetrates through the driving groove 20 to be connected with the elastic sliding frame 12;
the center 10 is controlled to slide along the axis direction of the sample by the structure, so that the two samples are pushed to be close to each other, and the structure is detected and the operation is convenient;
the pushing assembly is provided with two sets, which are respectively arranged at the left side and the right side of the base 1, the driving screw rod 19 is provided with left adjusting screw threads and right adjusting screw threads with opposite rotation directions, the driving screw rod 19 is respectively connected with a left driving rod 26 and a right driving rod 27 through the left adjusting screw threads and the right adjusting screw threads in a threaded manner, and the left driving rod 26 and the right driving rod 27 are respectively connected with the elastic sliding frame 12 at the corresponding sides;
through the structure, the pushing assemblies are arranged on the left side and the right side, and the two samples are synchronously pushed to be close to each other from the two sides, so that the splicing efficiency is improved, meanwhile, the pushing force interaction of the two sides ensures that the samples are in a static state after being spliced with each other, compared with single-side pushing, the sliding of unpowered samples is avoided, the spliced samples are in static and reasonable positions, and favorable conditions are created for subsequent measurement;
meanwhile, the pushing assembly further comprises an adjusting sleeve 22 in threaded connection with one end, away from the center 10, of the pushing sleeve 13; an adjusting spring 23 is arranged in the adjusting sleeve 22, a contact switch 24 is further arranged on the pushing sleeve 13, a trigger piece 25 opposite to the contact switch 24 is arranged on the top of the elastic sliding frame 12, two ends of the adjusting spring 23 respectively abut against the elastic sliding frame 12 and the adjusting sleeve 22, and the trigger piece 25 is preferably made of a thin steel sheet;
the trigger piece 25 can be forced to bend towards the side of the contact switch 24 and draw close to each other by the compression of the adjusting spring 23; when the samples are spliced, the driving motor 18 drives the elastic sliding frame 12 to continue to move, so that the trigger piece 25 is forced to further bend and finally contacts with the contact switch 24, so that the circuit is conducted, the driving motor 18 is controlled to stop, the automatic shutdown of the equipment is realized after the stable splicing, overload of the driving motor 18 is avoided, meanwhile, the transition compression of the samples is avoided, and the measuring precision is further influenced;
when the device is used, broken samples are respectively placed in the sample clamping frames 2 at two sides of the base 1, and the broken samples are positioned through the positioning assembly, so that the accurate installation of the samples is realized, and the coaxiality between the two samples is ensured;
after the installation is finished, the pushing device is abutted against the end face of the sample, and meanwhile, the driving device drives the pushing device to slide towards the direction close to the other sample, so that the two samples are pushed to be close to each other along the axial direction until the two samples are completely spliced; finally, the length of the spliced sample is measured through the sliding of the measuring assembly, so that the elongation is measured;
compared with the prior art, the application ensures the stable position of the sample through the sample clamping frame, simultaneously ensures that the broken sample can only slide along the axial direction due to the limitation of the sample clamping frame, and the positioning component ensures the coaxiality of the sample, and simultaneously avoids the rotation of the sample around the axial direction, thereby ensuring the matching degree between the sections, so that compared with the hand-held splicing mode of the person skilled in the art, the stability and the precision of the sample splicing are higher;
secondly, through the cooperation of the driving device and the pushing device, the automatic splicing of the fracture sample is realized, the hands of the person in the field are liberated, the person in the field can have more efforts to judge whether the splicing is accurate or not and correct the misoperation in the splicing process, and the improvement of the splicing precision is facilitated;
finally, due to improvement of splicing accuracy, the sections among the fracture samples after the completion of splicing can be perfectly spliced, so that the splicing effect of the samples is guaranteed, powerful guarantee is provided for subsequent measurement, and improvement of the detection accuracy of the fracture samples is facilitated.
The foregoing description is only of the preferred embodiments of the present application, and is not intended to limit the scope of the application, but rather is intended to cover any equivalents of the structures or equivalent processes disclosed herein or in the alternative, which may be employed directly or indirectly in other related arts.
Claims (10)
1. A device for measuring elongation after break for tensile test, characterized by comprising a base (1);
the device comprises a base (1), a plurality of sample clamping frames (2), a plurality of slide grooves (3) and a plurality of slide grooves (3), wherein the sample clamping frames (2) are respectively arranged on two sides of the base (1), and broken samples are respectively arranged in the slide grooves (3) in a sliding manner; a positioning assembly for controlling the mounting position of the sample is further arranged in the chute (3);
the pushing device is arranged on the base (1) in a sliding manner;
the driving device is connected with the pushing device and drives the pushing device to push the two broken samples to be mutually close and spliced;
and the measuring assembly is connected with the sample clamping frame (2) in a sliding manner.
2. The device for measuring the elongation after break for the tensile test according to claim 1, wherein the base (1) is further provided with a plurality of sleeves (4), one end of each sleeve (4) is connected with an adjusting screw (5) in a threaded manner, and the other end of each sleeve is sleeved with a supporting cap (6) in a sliding manner; and a buffer spring (7) is further arranged in the sleeve (4), and two ends of the buffer spring (7) are respectively abutted against the supporting cap (6) and the adjusting screw (5).
3. The device for measuring the elongation after break for the tensile test according to claim 1, wherein the sample clamping frame (2) comprises a base (201) and a movable pressing plate (202), a plurality of sliding rods (203) are arranged on the base (201), and one end of each movable pressing plate (202) is respectively connected with each sliding rod (203) in a sliding manner; and the slide bar (203) is also provided with a limit spring (204) and a limit nut (205).
4. The device for measuring elongation after break according to claim 1, wherein the positioning assembly comprises a positioning chute (8) and a positioning slide (9) which are mutually matched, and the positioning chute (8) and the positioning slide (9) are respectively arranged on the chute (3) and the sample.
5. The post-break elongation measurement device for tensile testing according to claim 1, wherein the pushing assembly comprises a tip (10), a support frame (11) and an elastic carriage (12), the tip (10) being slidingly connected with the support frame (11); one end of the center (10) is abutted with the sample, a pushing sleeve (13) is arranged on the elastic carriage (12), and the center (10) is abutted with the pushing sleeve (13).
6. The device for measuring elongation after break for tensile test according to claim 5, wherein a lifting plate (14) is arranged on the supporting frame (11), and a fixing screw (15) is arranged on the lifting plate (14); the pushing sleeve (13) is provided with a slot (16) which is matched with the elastic sliding frame (12); the supporting frame (11) is provided with a lifting groove (17) which is matched with the center (10).
7. The post-breaking elongation measuring device for tensile test according to claim 5, wherein the driving assembly comprises a driving motor (18) and a driving screw rod (19) which are connected in a power mode, a driving groove (20) is formed in the base (1), a driving rod (21) is connected to the driving screw rod (19) in a threaded mode, and one end of the driving rod (21) penetrates through the driving groove (20) to be connected with the elastic sliding frame (12).
8. The device for measuring elongation after break for tensile test according to claim 6, wherein said pushing assembly further comprises an adjustment sleeve (22) screwed to said pushing sleeve (13); an adjusting spring (23) is arranged in the adjusting sleeve (22), a contact switch (24) is further arranged on the pushing sleeve (13), a trigger piece (25) opposite to the contact switch (24) is arranged at the top of the elastic sliding frame (12), and two ends of the adjusting spring (23) are respectively abutted to the elastic sliding frame (12) and the adjusting sleeve (22).
9. The post-breaking elongation measuring device for tensile test according to claim 7, wherein pushing components are arranged on two sides of the base (1), the driving rod comprises a left driving rod (26) and a right driving rod (27), the driving screw (19) is respectively connected with the left driving rod (26) and the right driving rod (27) through threads with opposite rotation directions, and the left driving rod (26) and the right driving rod (27) are respectively connected with the elastic sliding frame (12) on the corresponding sides.
10. A post-break elongation measuring device according to claim 1, wherein the measuring assembly comprises a caliper (28) and a bracket (29) connected to each other, the bracket (29) being connected to any one of the sample holders (2) by means of mutually cooperating slide rails (30) and slides (31).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310909858.9A CN117007444A (en) | 2023-07-24 | 2023-07-24 | A elongation after break measuring device for tensile test |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310909858.9A CN117007444A (en) | 2023-07-24 | 2023-07-24 | A elongation after break measuring device for tensile test |
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| Publication Number | Publication Date |
|---|---|
| CN117007444A true CN117007444A (en) | 2023-11-07 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202310909858.9A Pending CN117007444A (en) | 2023-07-24 | 2023-07-24 | A elongation after break measuring device for tensile test |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN118090281A (en) * | 2024-04-23 | 2024-05-28 | 成都飞机工业（集团）有限责任公司 | Sampling device and sampling method for aircraft coating adhesion experiment |
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2023
- 2023-07-24 CN CN202310909858.9A patent/CN117007444A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN118090281A (en) * | 2024-04-23 | 2024-05-28 | 成都飞机工业（集团）有限责任公司 | Sampling device and sampling method for aircraft coating adhesion experiment |
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