CN220019236U - Reinforcing steel bar bending testing machine with calibrating device - Google Patents
Reinforcing steel bar bending testing machine with calibrating device Download PDFInfo
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- CN220019236U CN220019236U CN202321381892.5U CN202321381892U CN220019236U CN 220019236 U CN220019236 U CN 220019236U CN 202321381892 U CN202321381892 U CN 202321381892U CN 220019236 U CN220019236 U CN 220019236U
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- 238000005452 bending Methods 0.000 title claims abstract description 112
- 238000012360 testing method Methods 0.000 title claims abstract description 28
- 229910001294 Reinforcing steel Inorganic materials 0.000 title claims description 32
- 230000007246 mechanism Effects 0.000 claims abstract description 54
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 27
- 239000010959 steel Substances 0.000 claims abstract description 27
- 230000003014 reinforcing effect Effects 0.000 claims description 37
- 230000005540 biological transmission Effects 0.000 claims description 23
- 230000000295 complement effect Effects 0.000 claims description 5
- 230000000694 effects Effects 0.000 claims description 5
- 238000009434 installation Methods 0.000 abstract description 9
- 238000000034 method Methods 0.000 description 7
- 230000008569 process Effects 0.000 description 7
- 238000005259 measurement Methods 0.000 description 3
- 230000000149 penetrating effect Effects 0.000 description 3
- 230000006978 adaptation Effects 0.000 description 2
- 230000008859 change Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 230000009471 action Effects 0.000 description 1
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- 238000005516 engineering process Methods 0.000 description 1
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Abstract
The utility model relates to the technical field of experimental test instruments, in particular to a steel bar bending test machine with a calibration device, which comprises an installation box, a bending mechanism, a calibration mechanism and an auxiliary mechanism, wherein the bending mechanism and the calibration mechanism are arranged on the installation box, the auxiliary mechanism is arranged on the bending mechanism, the calibration mechanism comprises an indication assembly, the indication assembly comprises an angle dial and a pointer, the pointer is arranged on the bending mechanism, the angle dial is arranged on the installation box, the angle dial is provided with an angle degree, the angle dial is used for reading the angle through which the pointer rotates, and the auxiliary mechanism plays a role of fixing the non-bending end of a steel bar.
Description
Technical Field
The utility model relates to the technical field of experimental test instruments, in particular to a reinforcing steel bar bending test machine with a calibration device.
Background
At present, all large cities in the country are built in cities, various residential areas, office buildings and public facilities are actively built, a large amount of reinforcing steel bar materials are used in the building process, bending processing is needed for the reinforcing steel bar materials, and the bending angle of the reinforcing steel bars is particularly important for subsequent use.
In the prior art, the steel bar bending test machine mainly comprises an installation box and a bending mechanism, wherein the bending mechanism is arranged on the installation box and comprises a turntable, a transmission shaft and a motor, an output shaft of the motor is fixedly connected to the transmission shaft, the transmission shaft is integrally formed and connected to the circle center of the turntable, a plurality of positioning holes and bending rollers are formed in the turntable, steel bars are clamped between the bending rollers and the transmission shaft of the turntable, the motor starts to drive the turntable to rotate so as to bend the steel bars, and therefore, the rotated angle of the turntable is the bent angle of the steel bars.
In the process of realizing the utility model, the inventor finds that at least the following problems exist in the technology, and the bending angle of the steel bar is difficult to control and the steel bar bending experimental machine is inconvenient to calibrate in the long-time use process.
Disclosure of Invention
In order to accurately and conveniently calibrate the bending angle of the reinforcing steel bar bending test machine to the reinforcing steel bar, the utility model provides the reinforcing steel bar bending test machine with the calibrating device.
The utility model provides a reinforcing steel bar bending testing machine with a calibrating device, which adopts the following technical scheme:
the utility model provides a steel bar bending test machine with calibrating device, includes mounting box, bending mechanism, calibration mechanism and complementary unit, bending mechanism with the calibration mechanism all sets up on the mounting box, complementary unit sets up on the bending mechanism and is used for the stiff end of fixed reinforcing bar, calibration mechanism includes the instruction subassembly, the instruction subassembly includes angle calibrated scale and pointer, the pointer sets up on the bending mechanism, the angle calibrated scale sets up on the mounting box, be provided with the angle degree on the angle calibrated scale, the angle calibrated scale is used for reading the angle that the pointer was changeed.
Through adopting above-mentioned technical scheme, when bending mechanism is crooked the reinforcing bar, auxiliary mechanism fixes the reinforcing bar, and the pointer can rotate along with bending mechanism, obtains actual bending angle through reading the angle that the pointer was rotated on the angle calibrated scale to confirm whether set for angle and bending angle unanimous, convenient and fast's realization reinforcing bar bending angle's calibration.
Optionally, the bending mechanism includes carousel, bending roller and power component, the carousel rotates to be connected on the mounting box, the bending roller is connected on the carousel, power component sets up on the carousel, pointer fixed connection be in on the carousel and with the coaxial rotation of carousel.
Through adopting above-mentioned technical scheme, the reinforcing bar is placed between bending roll and transmission shaft, and power pack drive carousel rotates, and the carousel rotates and drives bending roll rotation, bends the reinforcing bar under bending roll and transmission shaft's interact, has played the effect of crooked reinforcing bar.
Optionally, the calibrating mechanism further comprises a connecting shaft, a first supporting rod and a second supporting rod, the connecting shaft is fixedly connected with the turntable coaxially, the pointer is fixedly connected with one end of the connecting shaft away from the transmission shaft, the angle dial is rotationally connected with the connecting shaft, the first supporting rod is fixedly connected with the angle dial, the second supporting rod is fixedly connected with the first supporting rod, and the second supporting rod is far away from the end face of the first supporting rod and is fixedly connected with the mounting box.
Through adopting above-mentioned technical scheme, first bracing piece and second bracing piece have played the fixed action, and the two is fixed connection with the angle calibrated scale on the mounting box, and the setting of first bracing piece and second bracing piece is fixed the angle calibrated scale in the top of carousel, the placing and collecting of the reinforcing bar of being convenient for.
Optionally, the calibration mechanism further comprises a positioning assembly, the positioning assembly comprises an angle scale ring, the angle scale ring and the turntable are concentric and arranged on the mounting box, the angle scale ring and the turntable rotate relatively, and an angle degree is arranged on the angle scale ring.
Through adopting above-mentioned technical scheme, utilize the angle scale ring to measure the angle that the carousel was turned over to further measurement actual bending angle, the angle of reading on the angle scale ring compares with the angle of reading on the angle calibrated scale, has further reduced the error in the actual bending angle measurement process.
Optionally, the locating component further includes a first limiting shaft, a second limiting shaft and a limiting rod, the limiting rod is arranged on the rotary table, a plurality of limiting holes are formed in the mounting box, the limiting holes are formed according to angles on the angle scale ring, the first limiting shaft and the second limiting shaft are respectively inserted into the two limiting holes, the angle between the first limiting shaft and the second limiting shaft is a set bending angle, and the limiting rod rotates between the first limiting shaft and the second limiting shaft.
Through adopting above-mentioned technical scheme, first spacing axle inserts in any spacing hole, the second spacing axle inserts in other spacing holes for angle between first spacing axle and the second spacing axle is the bending angle of settlement, start-up motor, motor rotation carousel rotates the gag lever post to the position of first spacing axle, gag lever post and first spacing axle looks butt, close the motor, place the reinforcing bar this moment, open the motor and drive the reinforcing bar bending, when the gag lever post runs into the second spacing axle, the gag lever post is stopped unable continuation rotation by the second spacing axle, close the motor this moment, thereby make the actual bending angle of reinforcing bar be the bending angle of settlement, the effect of adjustment settlement angle has been realized.
Optionally, the auxiliary mechanism includes butt plate and drive assembly, butt plate sliding connection is in on the carousel, drive assembly sets up on the mounting box, butt plate with drive assembly connects, drive assembly drives butt plate motion.
Through adopting above-mentioned technical scheme, drive assembly drives the butt board and removes to the lateral wall of reinforcing bar on, butt board and the lateral wall butt of reinforcing bar, and butt board promotes the reinforcing bar butt simultaneously on transmission shaft and bending roll, has reduced the inaccurate probability of actual measurement's bending angle because of there is the space between reinforcing bar and transmission shaft or the bending roll.
Optionally, the drive assembly includes mount table, lead screw and hand wheel, mount table fixed connection is in on the mount box, lead screw threaded connection is in on the mount table, hand wheel fixed connection is in on the lead screw, the butt board sets up the lead screw is kept away from the one end of hand wheel.
Through adopting above-mentioned technical scheme, manual rotatory hand wheel, hand wheel drive lead screw rotate advance, and the lead screw promotes the butt board and is close to the reinforcing bar for the more accurate butt of butt board is on the reinforcing bar, also provides the support for the butt board simultaneously, has reduced the probability that the reaction force when the butt board is rotated by the reinforcing bar was passed.
Optionally, a groove is formed on the end surface of the abutting plate, which is far away from the screw rod.
Through adopting above-mentioned technical scheme, the recess of seting up on the butt board wraps up fixedly to the reinforcing bar, has reduced the drunkenness of reinforcing bar, is convenient for make the reinforcing bar that accords with the regulation for the length of buckling the end is fixed, can not change.
Optionally, the abutting plate is detachably connected to the screw rod.
Through adopting above-mentioned technical scheme, when changing the reinforcing bar of different models and carrying out bending processing, install through dismantling original butt board, seek the butt board of recess and reinforcing bar model looks adaptation, improved the suitability of reinforcing bar bending test machine that has calibrating device.
In summary, the utility model has the following beneficial technical effects:
1. calibrating the bending angle of the reinforcing steel bar by the reinforcing steel bar bending test machine, reducing errors in the calibration process, and bending the reinforcing steel bar to a set bending angle;
2. the steel bars are abutted, fixed and protected, so that the safety of the operation process is improved;
drawings
Fig. 1 is a schematic structural view of a reinforcing steel bar bending test machine with a calibrating device according to an embodiment of the present utility model;
FIG. 2 is a schematic view of a bending mechanism according to an embodiment of the present utility model;
FIG. 3 is a schematic diagram of a calibration mechanism according to an embodiment of the present utility model;
fig. 4 is a schematic structural diagram of an auxiliary mechanism in an embodiment of the utility model.
Reference numerals: 1. a mounting box; 11. penetrating holes; 12. a limiting hole; 2. a calibration mechanism; 21. a connecting shaft; 22. an indication assembly; 221. an angle dial; 222. a pointer; 223. a first support bar; 224. a second support bar; 23. a positioning assembly; 231. an angle scale ring; 232. a first limiting shaft; 233. the second limiting shaft; 234. a limit rod; 3. a bending mechanism; 31. a turntable; 311. positioning holes; 32. a bending roller; 33. a transmission shaft; 34. a motor; 4. an auxiliary mechanism; 41. an abutting plate; 42. a drive assembly; 421. a mounting table; 422. a screw rod; 423. a hinge base; 424. a hand wheel; 43. a screw hole; 44. a mounting groove; 45. a groove.
Detailed Description
The utility model is described in further detail below with reference to fig. 1-4.
The embodiment of the utility model discloses a reinforcing steel bar bending testing machine with a calibrating device.
Referring to fig. 1, a reinforcing bar bending test machine with a calibration device includes a mounting box 1, a bending mechanism 3 provided on the mounting box 1 for bending reinforcing bars, a calibration mechanism 2 provided on the mounting box 1 for calibration, and an auxiliary mechanism 4 provided on the bending mechanism 3 for fixing reinforcing bars; when the reinforcing steel bar is bent, the bending mechanism 3 bends the reinforcing steel bar, the calibration mechanism 2 detects whether the bending angle of the reinforcing steel bar is accurate or not, the reinforcing steel bar is adjusted to be bent to a set bending angle, the auxiliary device is abutted against the reinforcing steel bar to prevent the reinforcing steel bar from sliding, the probability of idle running of the bending mechanism 3 is reduced, and errors in the calibration process are reduced.
Referring to fig. 2 and 3, the bending mechanism 3 comprises a turntable 31, the turntable 31 is rotatably connected to the mounting box 1, a positioning hole 311 is formed in the end surface of the turntable 31 far away from the mounting box 1, a bending roller 32 is inserted into the positioning hole 311, and a transmission shaft 33 is integrally formed at the center of the turntable 31; the turntable 31 is also provided with a power assembly, the power assembly comprises a motor 34, the motor 34 is fixedly connected to the end face, close to the ground, of the installation box 1, a penetrating hole 11 is formed in one end, far away from the ground, of the installation box 1, and one end, close to the installation box 1, of the transmission shaft 33 penetrates through the penetrating hole 11 and is fixedly connected to the motor 34; when the steel bar bending test is carried out, the steel bar is placed on the rotary table 31, the steel bar is located between the transmission shaft 33 and the bending roller 32, the motor 34 is started, the motor 34 drives the rotary table 31 to rotate, the rotary table 31 drives the bending roller 32 to rotate, and the bending roller 32 and the transmission shaft 33 act together to bend the steel bar.
Referring to fig. 3 and 4, an auxiliary mechanism 4 is arranged on the mounting box 1, the auxiliary mechanism 4 comprises an abutting plate 41, the abutting plate 41 is slidably connected to the turntable 31, a groove 45 is formed in the end face, close to the reinforcing steel bar, of the abutting plate 41, and the groove 45 is matched with the side wall of the reinforcing steel bar; the mounting box 1 is provided with a driving assembly 42, the driving assembly 42 comprises two mounting tables 421, the two mounting tables 421 are fixedly connected to the mounting box 1, screw holes 43 are formed in each mounting table 421 along the length direction, screw rods 422 are connected to each screw hole 43 in a threaded mode, a hand wheel 424 is fixedly connected to one end, away from the abutting plate 41, of each screw rod 422, a hinge seat 423 is coaxially connected to one end, away from the hand wheel 424, of each screw rod 422, an inserting block is fixedly connected to one end, away from the screw rods 422, of each hinge seat 423, two mounting grooves 44 are formed in the end face, away from the reinforcing steel bars, of each abutting plate 41, and the two inserting blocks are respectively inserted into the two mounting grooves 44; the hand wheel 424 is manually rotated before bending the reinforcing steel bars, the hand wheel 424 drives the screw rod 422 to rotate, the screw rod 422 rotates to drive the abutting plate 41 to be close to the reinforcing steel bars, the groove 45 on the abutting plate 41 wraps the reinforcing steel bars, the abutting plate 41 pushes the reinforcing steel bars to be respectively abutted against the bending roller 32 and the transmission shaft 33, and the probability of inaccurate bending angle actually measured due to gaps between the reinforcing steel bars and the transmission shaft 33 or the bending roller 32 is reduced; the butt plate 41 and the grafting of two inserts have realized the detachable effect of butt plate 41, and when the reinforcing bar of change different models was crooked, the butt plate 41 of discomfort was dismantled earlier, found groove 45 and the butt plate 41 of the lateral wall looks adaptation of reinforcing bar again and installed, improved the suitability of reinforcing bar bending test machine.
The calibration mechanism 2 comprises a connecting shaft 21, the connecting shaft 21 is fixedly connected to the end face of the transmission shaft 33 far away from the motor 34, an indication assembly 22 is arranged on the connecting shaft 21, the indication assembly 22 comprises a second supporting rod 224, the second supporting rod 224 is vertically and fixedly connected to the mounting box 1, one end of the second supporting rod 224 far away from the mounting box 1 is fixedly connected with a first supporting rod 223, the axis of the length direction of the first supporting rod 223 is vertical to the axis of the second supporting rod 224, one end of the first supporting rod 223 far away from the second supporting rod 224 is fixedly connected with an angle dial 221, the angle dial 221 is rotationally connected with the connecting shaft 21, the angle dial 221 is positioned at one end of the connecting shaft 21 far away from the turntable 31, the end face of the angle dial 221 far away from the connecting shaft 21 is carved with a degree of 0-360 degrees, the end face of the connecting shaft 21 near the angle dial 221 is fixedly connected with a pointer 222, the pointer 222 is rotationally connected with the angle dial 221, and the pointer 222 is positioned at the end face of the angle dial 221 far away from the turntable 31; when the reinforcing bar is bent, the rotation of the turntable 31 drives the pointer 222 to rotate, and the angle at which the pointer 222 rotates is read on the angle dial 221, thereby determining whether the reinforcing bar is bent to a set angle.
The mounting box 1 is also provided with a positioning assembly 23, the positioning assembly 23 comprises an angle scale ring 231, the angle scale ring 231 is fixedly connected to the mounting box 1, the angle scale ring 231 and the turntable 31 are concentric and rotate relative to the turntable 31, and the end surface of the angle scale ring 231 far away from the mounting box 1 is engraved with degrees of 0-360 degrees; the mounting box 1 is provided with a plurality of limiting holes 12, all the limiting holes 12 are divided into two groups, the first group of limiting holes 12 are uniformly arranged along the angle scale ring 231 close to the turntable 31 at intervals of 0 degrees from the side wall perpendicular to the mounting box 1, and the second group of limiting holes 12 are uniformly arranged along the angle scale ring 231 away from the turntable 31 at intervals of 1 degree from the side wall perpendicular to the mounting box 1; a first limiting shaft 232 is inserted into the corresponding limiting hole 12 of 0 degree, a second limiting shaft 233 is inserted into any limiting hole 12 clockwise from the first limiting shaft 232, a limiting rod 234 is fixedly connected to the side wall of the turntable 31 perpendicular to the installation box 1, the axis of the limiting rod 234 is parallel to the ground, and the limiting rod 234 rotates between the first limiting shaft 232 and the second limiting shaft 233; when the steel bar is bent, the first limiting shaft 232 is inserted into the limiting hole 12 corresponding to 0 degree, the second limiting shaft 233 is inserted into the limiting hole 12 corresponding to the set bending angle, the motor 34 is started to rotate the rotary table 31, the rotary table 31 drives the limiting rod 234 to be abutted to the side wall of the first limiting shaft 232, the motor 34 is closed, the steel bar is placed in the steel bar, the motor 34 is started again to bend the steel bar, and when the limiting rod 234 is abutted to the second limiting shaft 233, the second limiting shaft 233 prevents the rotary table 31 from continuing to rotate, and at the moment, the motor 34 is stopped, and the steel bar is bent to the set bending degree.
The implementation principle of the reinforcing steel bar bending test machine with the calibration device provided by the embodiment of the utility model is as follows: when a steel bar bending test is performed, the first limiting shaft 232 is inserted into the limiting hole 12 corresponding to 0 degrees, the second limiting shaft 233 is inserted into the limiting hole 12 corresponding to the set bending degree, the degree between the first limiting shaft 232 and the second limiting shaft 233 is the set bending degree, the motor 34 is started to rotate the rotary table 31, the limiting rod 234 on the rotary table 31 is rotated to be abutted against the side wall of the first limiting shaft 232, the motor 34 is closed, the bending roller 32 is inserted into the corresponding positioning hole 311, then the steel bar is placed on the rotary table 31, the steel bar is positioned between the connecting shaft 21 and the bending roller 32, at the moment, the hand wheel 424 is manually rotated, the abutting plate 41 abuts against the steel bar and pushes the steel bar to be abutted against the transmission shaft 33 and the bending roller 32 respectively, then the motor 34 is started, the motor 34 drives the rotary table 31 to rotate with the pointer 222, the rotary table 31 drives the bending roller 32 to rotate, the steel bar is bent under the interaction of the bending roller 32 and the transmission shaft 33, when the limiting rod 234 rotates to be abutted against the side wall of the second limiting shaft 232, the second limiting shaft 234 is stopped from rotating, the motor 31 is closed, the bending roller 32 is inserted into the corresponding positioning hole 311, the degree is read, the degree of the bending angle is not equal to the set bending angle is read, and the degree of the degree is not equal to the degree, and the degree of the bending angle is required to be aligned to the degree of the bending angle is compared with the bending angle 222, and the degree is not equal to the degree.
The above embodiments are not intended to limit the scope of the present utility model, so: all equivalent changes in structure, shape and principle of the utility model should be covered in the scope of protection of the utility model.
Claims (9)
1. The utility model provides a steel bar bending test machine with calibrating device, its characterized in that, including mounting box (1), bending mechanism (3), calibrating mechanism (2) and complementary unit (4), bending mechanism (3) with calibrating mechanism (2) set up on mounting box (1), complementary unit (4) set up on bending mechanism (3), calibrating mechanism (2) include instruction subassembly (22), instruction subassembly (22) include angle calibrated scale (221) and pointer (222), pointer (222) set up on bending mechanism (3), angle calibrated scale (221) set up on mounting box (1), be provided with the angle number of degrees on angle calibrated scale (221), angle calibrated scale (221) are used for reading the angle that pointer (222) rotated, complementary unit (4) play the effect of fixed steel bar non-bending end.
2. A reinforcing bar bending testing machine with a calibration device according to claim 1, characterized in that the bending mechanism (3) comprises a turntable (31), bending rollers (32), a transmission shaft (33) and a power assembly, the turntable (31) is rotatably connected to the mounting box (1), the bending rollers (32) are arranged on the turntable (31), the transmission shaft (33) is fixedly connected to the turntable (31), and the power assembly is arranged on the transmission shaft (33).
3. The reinforcing steel bar bending testing machine with the calibrating device according to claim 2, characterized in that the calibrating mechanism (2) further comprises a connecting shaft (21), a first supporting rod (223) and a second supporting rod (224), the connecting shaft (21) is fixedly connected with the rotary table (31) coaxially, the pointer (222) is fixedly connected with one end of the connecting shaft (21) far away from the transmission shaft (33), the angle dial (221) is rotatably connected with the connecting shaft (21), the first supporting rod (223) is fixedly connected with the angle dial (221), the second supporting rod (224) is fixedly connected with the first supporting rod (223), and the end face of the second supporting rod (224) far away from the first supporting rod (223) is fixedly connected with the mounting box (1).
4. A reinforcing bar bending testing machine with a calibration device according to claim 3, characterized in that the calibration mechanism (2) further comprises a positioning assembly (23), the positioning assembly (23) comprises an angle scale ring (231), the angle scale ring (231) and the turntable (31) are concentrically arranged on the mounting box (1), the angle scale ring (231) and the turntable (31) rotate relatively, and the angle scale ring (231) is provided with an angle degree.
5. The reinforcing steel bar bending testing machine with the calibration device according to claim 4, wherein the positioning assembly (23) further comprises a first limiting shaft (232), a second limiting shaft (233) and a limiting rod (234), the limiting rod (234) is arranged on the rotary table (31), a plurality of limiting holes (12) are formed in the mounting box (1), the limiting holes (12) are formed according to angles on the angle scale ring (231), the first limiting shaft (232) and the second limiting shaft (233) are respectively inserted into two limiting holes (12) in the plurality of limiting holes (12), the angle between the first limiting shaft (232) and the second limiting shaft (233) is a set bending angle, and the limiting rod (234) rotates between the first limiting shaft (232) and the second limiting shaft (233).
6. A machine for reinforcing bar bending test with calibration device according to claim 5, characterized in that said auxiliary mechanism (4) comprises an abutment plate (41) and a driving assembly (42), said abutment plate (41) being slidingly connected to said turntable (31), said driving assembly (42) being provided on said mounting box (1), said abutment plate (41) being connected to said driving assembly (42), said driving assembly (42) driving said abutment plate (41) in motion.
7. The machine according to claim 6, wherein the driving assembly (42) comprises a mounting table (421), a screw (422) and a hand wheel (424), the mounting table (421) is fixedly connected to the mounting box (1), the screw (422) is in threaded connection with the mounting table (421), the hand wheel (424) is fixedly connected to the screw (422), and the abutting plate (41) is disposed at one end of the screw (422) away from the hand wheel (424).
8. A machine for reinforcing bar bending test with alignment means, as set forth in claim 7, characterized in that said abutment plate (41) is notched (45) on the end face remote from said screw (422).
9. A machine for reinforcing bar bending test with calibration means according to claim 7, characterized in that said abutment plate (41) is removably connected to said screw (422).
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
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CN202321381892.5U CN220019236U (en) | 2023-05-31 | 2023-05-31 | Reinforcing steel bar bending testing machine with calibrating device |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
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CN202321381892.5U CN220019236U (en) | 2023-05-31 | 2023-05-31 | Reinforcing steel bar bending testing machine with calibrating device |
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CN220019236U true CN220019236U (en) | 2023-11-14 |
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CN202321381892.5U Active CN220019236U (en) | 2023-05-31 | 2023-05-31 | Reinforcing steel bar bending testing machine with calibrating device |
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CN (1) | CN220019236U (en) |
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2023
- 2023-05-31 CN CN202321381892.5U patent/CN220019236U/en active Active
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