CN120992356B - Firmly-fixed steel bar tension test device - Google Patents
Firmly-fixed steel bar tension test deviceInfo
- Publication number
- CN120992356B CN120992356B CN202511511673.8A CN202511511673A CN120992356B CN 120992356 B CN120992356 B CN 120992356B CN 202511511673 A CN202511511673 A CN 202511511673A CN 120992356 B CN120992356 B CN 120992356B
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- clamping group
- group
- lower clamping
- fixedly connected
- steel bar
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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
- G01N3/08—Investigating strength properties of solid materials by application of mechanical stress by applying steady tensile or compressive forces
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B5/00—Measuring arrangements characterised by the use of mechanical techniques
- G01B5/24—Measuring arrangements characterised by the use of mechanical techniques for measuring angles or tapers; for testing the alignment of axes
- G01B5/245—Measuring arrangements characterised by the use of mechanical techniques for measuring angles or tapers; for testing the alignment of axes for testing perpendicularity
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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
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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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- 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
- G01N3/06—Special adaptations of indicating or recording means
- G01N3/062—Special adaptations of indicating or recording means with mechanical indicating or recording means
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N2203/0001—Type of application of the stress
- G01N2203/0003—Steady
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N2203/0014—Type of force applied
- G01N2203/0016—Tensile or compressive
- G01N2203/0017—Tensile
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N2203/02—Details not specific for a particular testing method
- G01N2203/06—Indicating or recording means; Sensing means
- G01N2203/0605—Mechanical indicating, recording or sensing means
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N2203/02—Details not specific for a particular testing method
- G01N2203/06—Indicating or recording means; Sensing means
- G01N2203/067—Parameter measured for estimating the property
- G01N2203/0682—Spatial dimension, e.g. length, area, angle
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Biochemistry (AREA)
- General Health & Medical Sciences (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Investigating Strength Of Materials By Application Of Mechanical Stress (AREA)
Abstract
The invention relates to the technical field of steel bar tension tests and discloses a steel bar tension test device which is firmly fixed, comprising a tension test machine shell, an upper clamping group and a lower clamping group, wherein the upper clamping group and the lower clamping group are arranged on the tension test machine shell, the upper clamping group is arranged above the lower clamping group, a positioning rotating group is arranged in the lower clamping group, the positioning rotating group comprises a working groove, the working groove is arranged in the lower clamping group, a positioning rotating turbine is rotationally connected to the inside of the working groove, the upper and lower positions of a steel bar can be accurately adjusted by the aid of a transmission structure of a worm, the positioning rotating turbine and a threaded rod, the length of the two ends extending into the clamping group is uniform by matching with a liftable positioning cylinder, centering adjustment is realized, the accuracy of the test is improved, the length centering and the perpendicularity correction functions are definitely separated, and different effects are realized through the same mechanism structure and switching states.
Description
Technical Field
The invention relates to the field of steel bar tension tests, in particular to a steel bar tension test device which is firmly fixed.
Background
The steel bar tension test device is an instrument specially used for testing the mechanical property of steel bars when the steel bars are tensioned. The key indexes such as strength, plasticity and the like of the steel bar are detected by applying gradually increasing pulling force to the steel bar until the steel bar is broken.
The columnar steel bar tension testing device on the market generally has the problems of difficult centering adjustment, poor clamping adaptability, complicated perpendicularity correction and the like, and firstly, most devices rely on manual naked eyes to judge the extending lengths of two ends of the steel bar, and lack of an accurate centering mechanism, so that uneven clamping stress is caused, and the fluctuation of test data is large. Secondly, perpendicularity adjustment usually requires repeated measurement by means of an external tool, and is excessively dependent on experience of an operator, and visual monitoring feedback is lacking. Finally, each adjusting function is dispersed in different mechanisms, so that the switching is inconvenient, and the batch detection requirement is difficult to adapt.
Therefore, it is desirable to provide a steel bar tension test device that is firmly fixed, so as to solve the above-mentioned problems.
Disclosure of Invention
Aiming at the defects in the prior art, the invention aims to provide a steel bar tension test device which is firmly fixed.
The steel bar tension testing device comprises a tension testing machine shell, an upper clamping group and a lower clamping group, wherein the upper clamping group and the lower clamping group are arranged on the tension testing machine shell, the upper clamping group is arranged above the lower clamping group, and a positioning rotating group is arranged in the lower clamping group;
The rotary positioning group comprises a working groove, the working groove is formed in the lower clamping group, a positioning rotary turbine is connected to the working groove in a rotary mode, a threaded rod is connected to the positioning rotary turbine in a threaded mode, a vertical groove is formed in the lower surface of the threaded rod, a rectangular block is connected to the vertical groove in a sliding mode, the lower clamping group is formed in the rotary groove in a sliding mode, the rectangular block is connected to the rotary groove in a sliding mode, a disc limiting rotary rod is fixedly connected to one end of the rectangular block, the disc limiting rotary rod is connected to the outer wall of the disc limiting rotary rod in a sleeved mode, a positioning block group is fixedly connected to the lower clamping group in a rotary mode, a worm is connected to the positioning block group in a rotary mode, and a rotary handle is fixedly connected to one end of the lower clamping group in a rotary mode, far away from the worm.
Preferably, the positioning rotating group further comprises a bearing disc, the inner wall of the bearing disc is fixedly connected to the bottom of the threaded rod, three arc rods are annularly distributed on the outer wall of the bearing disc and fixedly connected with the outer wall of the bearing disc, an arc chute is formed in the lower clamping group, and the three arc rods are slidably connected to the inner portion of the arc chute.
Preferably, the top of threaded rod is provided with fixed subassembly, the top fixedly connected with location section of thick bamboo of threaded rod, location section of thick bamboo fixed connection is at the top of threaded rod, the upper surface of location section of thick bamboo is six fixed blocks of annular fixedly connected with, every the equal sliding connection of outer wall of fixed block has the recess slide.
Preferably, the fixing assembly further comprises six clamping pieces, six clamping pieces are fixedly connected to one side, far away from the fixing block, of the groove sliding plate, a second reset spring is fixedly connected to the outer wall of the groove sliding plate, and one end, far away from the groove sliding plate, of the second reset spring is fixedly connected to the fixing block.
Preferably, the straightness detection group is all provided with on last clamping group and the lower clamping group, the straightness detection group is including two square fixture blocks, two square fixture blocks joint respectively on last clamping group and lower clamping group, two the inside of square fixture block all is provided with the measuring rod, two the equal fixedly connected with locating plate of outer wall of measuring rod, two the inside of measuring rod is all rotated and is connected with spacing, two the equal fixedly connected with third reset spring of outer wall of spacing, the one end fixedly connected with of spacing is kept away from to third reset spring is on the locating plate, two the equal sliding connection in inside of measuring rod has the conflict head, the inside fixedly connected with tooth dental lamina of conflict head.
Preferably, the straightness detection group still includes the percentage table, percentage table fixed connection is on the square fixture block of centre gripping group top down, the measuring rod sliding connection on the centre gripping group down is in the inside of percentage table and square fixture block, the measuring rod fixed connection on the upper clamping group is in the inside of square fixture block, the warning light is installed to the bottom of lower clamping group.
Preferably, the worm is meshed with the positioning rotating turbine, the disc limiting rotating rod is connected to the inside of the lower clamping group in a sliding and rotating mode, one end of the first reset spring is fixedly connected to the lower clamping group, and the other end of the first reset spring is in contact with the disc limiting rotating rod.
Preferably, each clamping piece is provided with anti-skidding lines on one side far away from the groove sliding plate, and each clamping piece is provided with an inclined plane on the top on one side far away from the groove sliding plate.
Preferably, the limit bar is abutted against the tooth plate, and one ends of the two abutting heads, which are far away from the detection rod, are all arranged to be cambered surfaces.
Compared with the prior art, the steel bar tension test device provided by the invention has the beneficial effects that:
The transmission structure of the worm, the positioning rotating turbine and the threaded rod is used for matching with the liftable positioning cylinder, so that the upper position and the lower position of the steel bar can be accurately adjusted, the length of the two ends extending into the clamping group is ensured to be uniform, the problem of uneven tension distribution caused by poor centering is avoided, the reliability of test data is improved, centering adjustment is realized, and the test accuracy is improved;
through the arrangement of the clamping piece and the second reset spring, the spring is used for clamping, so that the flexible uniform clamping is realized, the stability of primary clamping is ensured, the damage to the surface of a test piece is avoided, and the device is suitable for testing reinforcing steel bars with various specifications;
Through setting up of two supporting contacts, percentage table, warning light, reached and need not to measure the correction with the help of external tool, realized the visual monitoring and the automatic correction of straightness, when the reinforcing bar is non-perpendicular, the percentage table pointer deflection is obvious, along with the rotatory adjustment of reinforcing bar, the pointer returns the positive gradually, the warning light goes out promptly and shows that it is perpendicular promptly to go out, this kind of design has simplified the straightness adjustment flow, has reduced the dependence to operating personnel experience.
The device has the advantages that the length centering function and the perpendicularity correcting function are clearly separated, different effects are realized through the same mechanism structure and the switching state, the operation logic is clear, the rotary locking mechanism (rectangular block, vertical groove, rotary groove and the like) is matched, the adjusting mode can be rapidly switched when needed, the adjusting precision is ensured, the operation efficiency is improved, and the device is suitable for batch detection scenes.
Drawings
FIG. 1 is a schematic diagram of the overall device position relationship in the present invention;
FIG. 2 is a cross-sectional view of the overall device of the present invention;
FIG. 3 is an enlarged view of the structure of FIG. 2A in accordance with the present invention;
FIG. 4 is a schematic diagram showing the position relationship of square fixture block, detection rod and dial indicator in the present invention;
FIG. 5 is an enlarged view of the structure of FIG. 4B in accordance with the present invention;
FIG. 6 is a schematic diagram showing the relationship between the square fixture block and the detecting rod according to the present invention;
FIG. 7 is an enlarged view of the structure of FIG. 6 at C in accordance with the present invention;
FIG. 8 is a schematic diagram showing the positional relationship among the upper clamping set, the lower clamping set, the square clamping block, the detection rod and the dial indicator;
FIG. 9 is a schematic view of the positional relationship of the lower clamping set, the threaded rod and the positioning cylinder in the present invention;
FIG. 10 is an enlarged view of the structure of FIG. 9D in accordance with the present invention;
FIG. 11 is a schematic view of the positional relationship of the working groove, positioning rotating turbine, threaded rod, bearing disk, and arcuate lever in the present invention;
FIG. 12 is an enlarged view of the structure of FIG. 11E in accordance with the present invention;
FIG. 13 is a schematic view of the position relationship of rectangular blocks, rotating grooves and disc limiting rotating rods in the invention;
FIG. 14 is a schematic view of the positional relationship of the positioning cylinder, the fixed block and the groove slide plate in the present invention;
Fig. 15 is an enlarged view of the structure of fig. 14 at F in accordance with the present invention.
Reference numeral 11, a tensile testing machine shell, 12, an upper clamping group, 13, a lower clamping group;
The positioning rotating group comprises a 21, a working groove, a 22, a positioning rotating turbine, a 23, a threaded rod, a 24, a vertical groove, a 251, a rectangular block, a 252, a rotating groove, a 26, a disc limiting rotating rod, a 27, a first reset spring, a28, a positioning block group, a 29, a worm, a 210, a rotating handle, a 211, a bearing disc, a 212, an arc-shaped rod, a 213 and an arc-shaped chute;
the fixing component comprises 31, a positioning cylinder, 32, a fixing block, 33, a groove sliding plate, 34, a clamping piece, 35 and a second reset spring;
the verticality detection group comprises 41, square clamping blocks, 42, detection rods, 43, positioning plates, 44, limit bars, 45, third reset springs, 46, abutting heads, 47, tooth plates, 48, dial indicators, 49 and alarm lamps.
Detailed Description
For the purpose of making apparent the objects, technical solutions and advantages of the present invention, the present invention will be further described in detail with reference to the accompanying drawings and examples, it being understood that the specific examples described herein are for illustration only and are not intended to limit the present invention.
In the description of the present invention, the terms "center", "lateral", "upper", "lower", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc. indicate orientations or positional relationships based on those shown in the drawings, merely for convenience in describing the present invention and simplifying the description, and do not indicate or imply that the apparatus or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present invention.
Specific implementations of the invention are described in detail below in connection with specific embodiments.
The embodiment of the invention is shown in fig. 1 to 3 and fig. 9 to 13, and the device for testing tension of steel bars, which is provided by an embodiment of the invention, comprises a tensile testing machine shell 11, an upper clamping group 12 and a lower clamping group 13, wherein the upper clamping group 12 and the lower clamping group 13 are arranged on the tensile testing machine shell 11, the upper clamping group 12 is arranged above the lower clamping group 13, and a positioning rotating group is arranged in the lower clamping group 13;
The lower clamping group 13 is slidably connected to the tensile testing machine shell 11, and a driving assembly is arranged at the bottom of the lower clamping group 13 and used for driving the lower clamping group 13 to ascend or descend.
The positioning rotating group comprises a working groove 21, the working groove 21 is formed in the lower clamping group 13, a positioning rotating turbine 22 is connected to the working groove 21 in a rotating mode, a threaded rod 23 is connected to the positioning rotating turbine 22 in a threaded mode, a vertical groove 24 is formed in the lower surface of the threaded rod 23, a rectangular block 251 is connected to the inner portion of the vertical groove 24 in a sliding mode, one end, away from the vertical groove 24, of the rectangular block 251 is fixedly connected with a disc limiting rotating rod 26, a first reset spring 27 is sleeved on the outer wall of the disc limiting rotating rod 26, a positioning block group 28 is fixedly connected to the inner portion of the lower clamping group 13, a worm 29 is connected to the positioning block group 28 in a rotating mode, and one end, away from the lower clamping group 13, of the worm 29 is fixedly connected with a rotating handle 210.
It should be noted that, the worm 29 is meshed with the disc limiting rotating rod 26, so that the worm 29 can drive the disc limiting rotating rod 26 to rotate, the disc limiting rotating rod 26 is slidingly and rotatably connected in the lower clamping group 13, so that the disc limiting rotating rod 26 can drive the rectangular block 251 to separate from the vertical groove 24, one end of the first return spring 27 is fixedly connected on the lower clamping group 13, and the other end of the first return spring 27 is in contact with the disc limiting rotating rod 26.
As shown in fig. 14 to 15, a fixing component is disposed at the top of the threaded rod 23, a positioning barrel 31 is fixedly connected to the top of the threaded rod 23, six fixing blocks 32 are fixedly connected to the upper surface of the positioning barrel 31 in a ring shape, and a groove sliding plate 33 is slidably connected to the outer wall of each fixing block 32.
The fixing assembly further comprises six clamping pieces 34, the six clamping pieces 34 are fixedly connected to one side, far away from the fixed block 32, of the groove sliding plate 33, a second reset spring 35 is fixedly connected to the outer wall of the groove sliding plate 33, and one end, far away from the groove sliding plate 33, of the second reset spring 35 is fixedly connected to the fixed block 32.
It should be noted that, the side of each clamping piece 34 far away from the groove sliding plate 33 is provided with anti-skid patterns, and the top of the side of each clamping piece 34 far away from the groove sliding plate 33 is provided with an inclined plane, so that the columnar steel bar test piece is convenient to be primarily fixed.
As shown in fig. 4 to 8, the upper clamping group 12 and the lower clamping group 13 are respectively provided with a perpendicularity detection group, the perpendicularity detection groups comprise two square clamping blocks 41, the two square clamping blocks 41 are respectively clamped on the upper clamping group 12 and the lower clamping group 13, detection rods 42 are respectively arranged in the two square clamping blocks 41, positioning plates 43 are fixedly connected to the outer walls of the two detection rods 42, limit bars 44 are respectively and rotatably connected to the inner portions of the two detection rods 42, third reset springs 45 are fixedly connected to the outer walls of the two limit bars 44, one ends, far away from the limit bars 44, of the third reset springs 45 are fixedly connected to the positioning plates 43, abutting heads 46 are slidably connected to the inner portions of the two detection rods 42, and tooth plates 47 are fixedly connected to the inner portions of the abutting heads 46.
The perpendicularity detection group further comprises a dial indicator 48, the dial indicator 48 is fixedly connected to the square clamping block 41 on the lower clamping group 13, the detection rod 42 on the lower clamping group 13 is slidably connected to the insides of the dial indicator 48 and the square clamping block 41, the detection rod 42 on the upper clamping group 12 is fixedly connected to the inside of the square clamping block 41, and the bottom of the lower clamping group 13 is provided with an alarm lamp 49.
It should be noted that, the limit strip 44 is in contact with the tooth plate 47, so that the limit strip 44 can limit the abutting contact 46 through the tooth plate 47, one end of the two abutting contact 46 away from the detecting rod 42 is set to be a cambered surface, so that the abutting contact 46 can conveniently detect the verticality of the columnar steel bar test piece, the dial indicator 48 and the alarm lamp 49 have a connection relationship, so that after the dial indicator 48 detects the verticality of the columnar steel bar test piece, the alarm lamp 49 can be used for knowing the verticality of the columnar steel bar test piece, the alarm lamp 49 adopts a red-green bicolor design (red represents non-verticality and green represents verticality), and is equipped with a buzzer (volume is greater than or equal to 80 dB), when the verticality of the columnar steel bar reaches the standard, the lamplight is changed from red to green and accompanied with buzzing prompt, visual and auditory feedback is considered, the observation burden of operators is reduced, the dial indicator 48 is a pointer type dial indicator in the prior art, the working core is to convert tiny linear displacement into rotary motion of a pointer, and realize 'small displacement visualization' in the prior art, which is described in detail herein.
In combination with the above embodiments, the following are all working procedures and working principles of the above embodiments:
in the initial state, the first return spring 27, the second return spring 35 and the third return spring 45 are not compressed, and the rectangular block 251 is positioned in the vertical groove 24.
When the columnar steel bar testing piece is in operation, the columnar steel bar testing piece is manually placed usually by a human, and the extending lengths of the columnar steel bar testing piece in the upper clamping group 12 and the lower clamping group 13 are inconsistent, so that the stress of the upper clamping group 12 and the lower clamping group 13 is unbalanced, the tensile force distribution deviation is caused, and finally, the testing data is distorted.
Fixing and centering adjustment of a columnar steel bar test piece:
the staff first needs to insert the columnar steel bar test piece into the lower clamping group 13, then place the columnar steel bar test piece in the positioning cylinder 31, and the columnar steel bar test piece will firstly abut against the inclined surfaces of the six clamping pieces 34, at this time, the columnar steel bar test piece will abut against the clamping pieces 34 and the groove sliding plate 33 according to the diameter thereof to move towards the direction of the fixed block 32, and meanwhile, the groove sliding plate 33 will gradually compress the second reset spring 35 towards the direction of the fixed block 32;
after the bottom of the columnar steel bar test piece abuts against the bottom of the inner cavity of the positioning cylinder 31, the second reset spring 35 enables the six groove sliding plates 33 to abut against the columnar steel bar test piece through the clamping pieces 34 due to self elasticity, so that the columnar steel bar test piece is preliminarily fixed.
Then, the staff drives the lower clamping group 13 and the positioning cylinder 31 therein and the columnar steel bar test piece to ascend through the driving assembly, so that both ends of the columnar steel bar test piece are positioned in the upper clamping group 12 and the lower clamping group 13.
After the primary fixing of the columnar steel bar test piece is completed, enabling the two ends of the columnar steel bar test piece to be located in the upper clamping group 12 and the lower clamping group 13, at the moment, a worker rotates the rotating handle 210, the rotating handle 210 drives the worm 29 to synchronously rotate around the positioning block group 28, the worm 29 is meshed with the positioning rotating turbine 22, the worm 29 further drives the positioning rotating turbine 22 to rotate in the rotating process, and then the positioning rotating turbine 22 drives the threaded rod 23 to ascend or descend through the threaded groove;
the threaded rod 23 can drive the positioning cylinder 31 at the top to synchronously rise or fall in the rising or falling process, the positioning cylinder 31 can drive the columnar steel bar test piece at the top to synchronously rise or fall, and when the staff stretches the two ends of the columnar steel bar test piece into the inner lengths of the upper clamping group 12 and the lower clamping group 13, the inner lengths of the upper clamping group 12 and the lower clamping group 13 are more uniform, so that the data are more accurate when the columnar steel bar test piece is subjected to tensile test.
During the process of ascending or descending the threaded rod 23, the threaded rod 23 pulls the bearing plate 211 at the bottom to ascend or descend synchronously, and the bearing plate 211 drives the arc-shaped rod 212 of the outer wall to slide along the inside of the arc-shaped chute 213.
Through the arrangement of the clamping piece 34 and the second reset spring 35, the springs are used for clamping, so that the flexible uniform clamping is realized, the stability of primary clamping is ensured, the damage to the surface of a test piece is avoided, and the device is suitable for testing reinforcing steel bars with various specifications;
The transmission structure of the worm 29, the positioning rotating turbine 22 and the threaded rod 23 is used for matching with the liftable positioning cylinder 31, so that the upper and lower positions of the steel bars can be accurately adjusted, the lengths of the two ends extending into the clamping groups are ensured to be uniform, the problem of uneven tension distribution caused by poor centering is avoided, the reliability of test data is improved, centering adjustment is realized, and the test accuracy is improved;
Adjustment of the abutment 46:
After the columnar steel bar test piece is preliminarily fixed, the worker needs to press the limiting strip 44 at this time, the limiting strip 44 compresses the third reset spring 45 towards the positioning plate 43, the limiting strip 44 is separated from the limit of the tooth plate 47, the worker can sequentially pull the two abutting heads 46 according to the diameter of the columnar steel bar test piece, the abutting heads 46 slide in the detecting rod 42, one ends of the two abutting heads 46, far away from the detecting rod 42, are abutted against the columnar steel bar test piece, the pressing of the limiting strip 44 is stopped finally, the third reset spring 45 elastically stretches and pushes the pressing of the limiting strip 44 to abut against the tooth plate 47, and the position of the abutting head 46 is limited through the tooth plate 47.
And (3) verticality adjustment:
When the staff stretches both ends of the columnar steel bar test piece into the upper clamping group 12 and the lower clamping group 13 to reach a uniform condition, the staff needs to pull the disc limiting rotating rod 26 in a direction away from the threaded rod 23, then the disc limiting rotating rod 26 gradually compresses the first reset spring 27, meanwhile, the disc limiting rotating rod 26 drives the rectangular block 251 to move in a direction away from the vertical groove 24, and then the disc limiting rotating rod 26 drives the rectangular block 251 to gradually slide into the rotary groove 252;
Then, the disc limiting rotating rod 26 is rotated, so that the disc limiting rotating rod 26 drives the rectangular block 251 to rotate in the rotating groove 252, then a worker stops pulling the disc limiting rotating rod 26, at the moment, the first reset spring 27 elastically stretches to push the disc limiting rotating rod 26 and the rectangular block 251 to move towards the vertical groove 24, and after the rectangular block 251 rotates due to the disc limiting rotating rod 26, the first reset spring 27 elastically pushes the rectangular block 251 to abut against the rotating groove 252, so that the rectangular block 251 cannot abut against the vertical groove 24 on the threaded rod 23, and the threaded rod 23 cannot ascend or descend in the rotating process of the positioning rotating turbine 22;
When the worker rotates the rotating handle 210 again, the rotating handle 210 is meshed through the worm 29 to position the rotating turbine 22 to rotate, the rectangular block 251 cannot abut against the vertical groove 24 on the threaded rod 23, the threaded rod 23 is driven to synchronously rotate in the process of positioning the rotating turbine 22, and the smoothness of rotation is improved through the bearing disc 211 at the bottom when the threaded rod 23 rotates;
The threaded rod 23 rotates while driving the positioning cylinder 31 at the top to rotate, and at this time, the second return spring 35 makes the six groove sliding plates 33 collide with the columnar steel bar test piece through the clamping piece 34 due to self elasticity, so that the columnar steel bar test piece is primarily fixed, and the positioning cylinder 31 drives the columnar steel bar test piece to synchronously rotate;
At this time, the two abutting heads 46 abut against the columnar steel bar test piece at the end far away from the detecting rod 42, so that when the columnar steel bar test piece rotates around the positioning cylinder 31 in a non-vertical state, the columnar steel bar test piece compresses the abutting head 46 at the end far away from the dial indicator 48 of the detecting rod 42 on the lower clamping group 13, the columnar steel bar test piece in the non-vertical state abuts against the abutting head 46 and moves with the detecting rod 42, so that the detecting rod 42 slides in the square clamping block 41 and the dial indicator 48, the larger the moving distance of the detecting rod 42 by the columnar steel bar test piece is, the larger the pointer rotation amplitude on the dial indicator 48 is, and conversely, the smaller the offset angle of the columnar steel bar test piece is, the smaller the moving distance of the columnar steel bar test piece abuts against the detecting rod 42 is, and the smaller the pointer rotation amplitude on the dial indicator 48 is;
Along with the rotation of the columnar steel bar test piece, the detection rod 42 on the upper clamping group 12 contacts with the steel bar through the abutting contact 46, and is matched with the detection system of the lower clamping group 13 to gradually correct the perpendicularity of the steel bar, and the columnar steel bar test piece is in a vertical state with the upper clamping group 12 and the lower clamping group 13 when the alarm lamp 49 is extinguished due to the connection relationship between the dial indicator 48 and the alarm lamp 49, so that the purpose of correcting the columnar steel bar test piece is achieved.
Through the setting of two conflict heads 46, percentage table 48, warning light 49, reached and need not to measure the correction with the help of external tool, realized the visual monitoring and the automatic correction of straightness, when the reinforcing bar is non-perpendicular, the pointer deflection of percentage table 48 is obvious, along with the rotatory adjustment of reinforcing bar, the pointer is right gradually, warning light 49 goes out simultaneously and shows that it is perpendicular promptly, this kind of design has simplified the straightness adjustment flow, has reduced the dependence to operating personnel experience.
The device clearly separates the functions of length centering and perpendicularity correction, realizes different effects through the same mechanism structure and switching states, has clear operation logic, is matched with a rotary locking mechanism (a rectangular block 251, a vertical groove 24, a rotary groove 252 and the like), can rapidly switch the adjustment modes when required, ensures the adjustment precision, improves the operation efficiency, and is suitable for batch detection scenes.
It will be apparent to those skilled in the art that although several embodiments and examples of the present invention have been described, these embodiments and examples are presented by way of example and are not intended to limit the scope of the invention. These novel embodiments can be implemented in various other modes, and various omissions, substitutions, and changes can be made without departing from the spirit of the invention. These embodiments and modifications thereof are included in the scope and gist of the invention, and are included in the invention described in the claims and their equivalents.
Furthermore, it should be understood that although the present disclosure describes embodiments, not every embodiment is provided with a separate embodiment, and that this description is provided for clarity only, and that the disclosure is not limited to the embodiments described in detail below, and that the embodiments described in the examples may be combined as appropriate to form other embodiments that will be apparent to those skilled in the art.
Claims (8)
1. The utility model provides a fixed firm reinforcing bar tensile test device, includes tensile test machine casing (11), goes up clamping group (12) and lower clamping group (13), go up clamping group (12) and lower clamping group (13) and all set up on tensile test machine casing (11), and go up clamping group (12) and set up in the top of lower clamping group (13), its characterized in that, be provided with the rotatory group of positioning in lower clamping group (13);
The positioning rotating group comprises a working groove (21), the working groove (21) is formed in the lower clamping group (13), a positioning rotating turbine (22) is connected to the working groove (21) in a rotating mode, a threaded rod (23) is connected to the positioning rotating turbine (22) in a threaded mode, a vertical groove (24) is formed in the lower surface of the threaded rod (23), a rectangular block (251) is connected to the inner portion of the vertical groove (24) in a sliding mode, a rotating groove (252) is formed in the inner portion of the lower clamping group (13), the rectangular block (251) is connected to the inner portion of the rotating groove (252) in a sliding mode, a disc limiting rotating rod (26) is fixedly connected to one end, far away from the vertical groove (24), of the rectangular block (251), a first reset spring (27) is sleeved on the outer wall of the disc limiting rotating rod (26), a positioning block group (28) is fixedly connected to the inner portion of the lower clamping group (13), a worm (29) is connected to the inner rotating portion of the positioning block group (28), and one end, far away from the lower clamping group (13), of the handle is fixedly connected with a hand (210);
The utility model discloses a tooth plate (47) is provided with a clamping group (13), including upper clamping group (12) and lower clamping group (13), the straightness that hangs down detects group is including two square fixture blocks (41), two square fixture blocks (41) joint respectively on upper clamping group (12) and lower clamping group (13), two the inside of square fixture blocks (41) all is provided with measuring rod (42), two the equal fixedly connected with locating plate (43) of outer wall of measuring rod (42), two the inside of measuring rod (42) all rotates and is connected with spacing (44), two the equal fixedly connected with third reset spring (45) of outer wall of spacing (44), the one end fixedly connected with of spacing (44) is kept away from to third reset spring (45) is on locating plate (43), two the equal sliding connection in inside of measuring rod (42) has conflict head (46), the inside fixedly connected with tooth plate (47) of conflict head (46).
2. The steel bar tension test device with firm fixation according to claim 1, wherein the positioning rotating group further comprises a bearing disc (211), the inner wall of the bearing disc (211) is fixedly connected to the bottom of the threaded rod (23), three arc rods (212) are fixedly connected to the outer wall of the bearing disc (211) in an annular distribution mode, an arc chute (213) is formed in the lower clamping group (13), and the three arc rods (212) are slidably connected to the inside of the arc chute (213).
3. The steel bar tension test device with firm fixation according to claim 1, wherein a fixing component is arranged at the top of the threaded rod (23), a positioning cylinder (31) is fixedly connected to the top of the threaded rod (23), the positioning cylinder (31) is fixedly connected to the top of the threaded rod (23), six fixing blocks (32) are fixedly connected to the upper surface of the positioning cylinder (31) in a ring shape, and a groove sliding plate (33) is slidably connected to the outer wall of each fixing block (32).
4. A fixed firm reinforcing bar tensile test device according to claim 3, characterized in that, fixed subassembly still includes six grip tabs (34), six grip tabs (34) are all fixed connection in recess slide (33) and are kept away from fixed block (32) one side, the outer wall fixedly connected with second reset spring (35) of recess slide (33), the one end fixed connection that recess slide (33) was kept away from to second reset spring (35) is on fixed block (32).
5. The steel bar tension test device with firm fixation according to claim 1, wherein the perpendicularity detection group further comprises a dial indicator (48), the dial indicator (48) is fixedly connected to a square clamping block (41) on the lower clamping group (13), a detection rod (42) on the lower clamping group (13) is slidably connected to the inside of the dial indicator (48) and the square clamping block (41), the detection rod (42) on the upper clamping group (12) is fixedly connected to the inside of the square clamping block (41), and an alarm lamp (49) is installed at the bottom of the lower clamping group (13).
6. The steel bar tension test device with firm fixation according to claim 1, wherein the worm (29) is meshed with the positioning rotating turbine (22), the disc limiting rotating rod (26) is slidingly and rotatably connected inside the lower clamping group (13), one end of the first return spring (27) is fixedly connected to the lower clamping group (13), and the other end of the first return spring (27) is in contact with the disc limiting rotating rod (26).
7. The device for testing tension of steel bar with firm fixation according to claim 4, wherein each clamping piece (34) is provided with anti-slip patterns on one side far away from the groove sliding plate (33), and the top of one side far away from the groove sliding plate (33) of each clamping piece (34) is provided with an inclined plane.
8. The device for testing tension of steel bar according to claim 1, wherein the limiting strip (44) is abutted against the tooth plate (47), and one ends of the two abutting heads (46) far away from the detecting rod (42) are both arc surfaces.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN202511511673.8A CN120992356B (en) | 2025-10-22 | 2025-10-22 | Firmly-fixed steel bar tension test device |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202511511673.8A CN120992356B (en) | 2025-10-22 | 2025-10-22 | Firmly-fixed steel bar tension test device |
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| CN120992356A CN120992356A (en) | 2025-11-21 |
| CN120992356B true CN120992356B (en) | 2026-02-06 |
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| CN208636140U (en) * | 2018-07-18 | 2019-03-22 | 河北林汇耐磨材料科技有限公司 | It is a kind of for detecting the cupping machine of special steel material |
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| CN220120555U (en) * | 2023-06-19 | 2023-12-01 | 陕西金信建筑工程质量检测有限公司 | Tensile strength testing machine |
| CN222353662U (en) * | 2024-04-29 | 2025-01-14 | 名扬宇恒工程管理集团有限公司 | Reinforcing bar tensile strength check out test set |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN117168966A (en) * | 2023-09-14 | 2023-12-05 | 新三思(深圳)实验设备有限公司 | A material solder joint tensile testing fixture and testing method |
| CN119985067A (en) * | 2025-01-09 | 2025-05-13 | 国家能源集团新能源技术研究院有限公司 | Mechanical testing system |
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