CN220251542U - Microcomputer controlled steel strand relaxation tester - Google Patents
Microcomputer controlled steel strand relaxation tester Download PDFInfo
- Publication number
- CN220251542U CN220251542U CN202322100931.6U CN202322100931U CN220251542U CN 220251542 U CN220251542 U CN 220251542U CN 202322100931 U CN202322100931 U CN 202322100931U CN 220251542 U CN220251542 U CN 220251542U
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- fixing
- steel strand
- test
- sliding block
- mounting
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- 229910000831 Steel Inorganic materials 0.000 title claims abstract description 59
- 239000010959 steel Substances 0.000 title claims abstract description 59
- 238000012360 testing method Methods 0.000 claims abstract description 68
- 230000001681 protective effect Effects 0.000 claims description 10
- 238000009864 tensile test Methods 0.000 claims description 6
- 238000002474 experimental method Methods 0.000 description 6
- 230000006378 damage Effects 0.000 description 4
- 208000027418 Wounds and injury Diseases 0.000 description 3
- 208000014674 injury Diseases 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000007747 plating Methods 0.000 description 2
- 229910000975 Carbon steel Inorganic materials 0.000 description 1
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- 229910000677 High-carbon steel Inorganic materials 0.000 description 1
- 229910001209 Low-carbon steel Inorganic materials 0.000 description 1
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 description 1
- 229910000611 Zinc aluminium Inorganic materials 0.000 description 1
- 229910045601 alloy Inorganic materials 0.000 description 1
- 239000000956 alloy Substances 0.000 description 1
- HXFVOUUOTHJFPX-UHFFFAOYSA-N alumane;zinc Chemical compound [AlH3].[Zn] HXFVOUUOTHJFPX-UHFFFAOYSA-N 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000010962 carbon steel Substances 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000009713 electroplating Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000003822 epoxy resin Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 229920000647 polyepoxide Polymers 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 238000005491 wire drawing Methods 0.000 description 1
- 239000011701 zinc Substances 0.000 description 1
- 229910052725 zinc Inorganic materials 0.000 description 1
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- Investigating Strength Of Materials By Application Of Mechanical Stress (AREA)
Abstract
The utility model relates to the technical field of steel strand relaxation tests, in particular to a microcomputer control steel strand relaxation test machine, which improves the safety of the test, ensures personal safety, is convenient for fixing the steel strand, is convenient for the test, prevents the steel strand from sliding relative to a fixing mechanism, and improves the accuracy of the test; comprises a protection mechanism; the anti-slip device comprises a protection mechanism, and is characterized by further comprising a locking mechanism, a test mechanism, a first fixing mechanism, a second fixing mechanism and an anti-slip mechanism, wherein the locking mechanism is arranged on the protection mechanism, the locking mechanism is arranged in the protection mechanism, the test mechanism is arranged on the protection mechanism, the first fixing mechanism is arranged on the test mechanism, the second fixing mechanism is arranged on the test mechanism, and the anti-slip mechanism is arranged on the second fixing mechanism.
Description
Technical Field
The utility model relates to the technical field of steel strand relaxation tests, in particular to a microcomputer-controlled steel strand relaxation test machine.
Background
The steel strand is a steel product formed by twisting a plurality of steel wires, a galvanized layer, a zinc-aluminum alloy layer, an aluminum-coated layer, a copper-coated layer, epoxy resin coating and the like can be added on the surface of the carbon steel according to the requirements, the manufacturing process is divided into monofilament manufacturing and strand manufacturing, a wire drawing technology is adopted when the monofilament is manufactured, and according to different materials of related products of the steel strand, the steel strand can be a high-carbon steel wire rod, a stainless steel wire rod or a medium-low-carbon steel wire rod, and if the zinc plating is required, electroplating or hot-dip plating treatment is carried out on the monofilament.
In the prior art of the steel strand wires relaxation test, for example, application number is CN202023248344.4, the trapezoidal seat can be driven to move up and down through the cooperation of the driving belt pulley, the driven belt pulley and the screw rod, and the trapezoidal seat can adjust the second fixing seat through the cooperation of the sliding rail and the pulley, so that the first fixing seat and the second fixing seat stretch after fixing the steel strand wires.
The prior art is inconvenient to fix and tensile test steel strands with different diameters, and the steel strands fixed in the prior art possibly slide relative to the fixing device during stretching, so that test errors are large, and accuracy is reduced.
Disclosure of Invention
In order to solve the technical problems, the microcomputer control steel strand relaxation testing machine provided by the utility model has the advantages that the safety of a test is improved, the personal safety is ensured, the steel strand is convenient to fix, the test is convenient, the steel strand and a fixing mechanism are prevented from sliding relatively, and the test accuracy is improved.
The microcomputer-controlled steel strand relaxation testing machine comprises a protection mechanism; the device further comprises a locking mechanism, a test mechanism, a first fixing mechanism, a second fixing mechanism and an anti-slip mechanism, wherein the locking mechanism is arranged on the protection mechanism; through protection mechanism to human protection when carrying out the experiment, prevent that the steel strand wires from breaking and causing the injury in the experiment, locking mechanical system and locking mechanical system fix protection mechanism, prevent to open in the experiment protection mechanism, and test mechanism carries out tensile test to the steel strand wires, and first fixed establishment and second fixed establishment fix the both ends of steel strand wires, and anti-skidding mechanism prevents that the steel strand wires from causing the error to the relative second fixed establishment slip, improves the accuracy.
Preferably, the protection mechanism comprises a bottom plate, a hinge, a protection cover and an observation window, wherein the protection cover is rotatably arranged on the bottom plate through the hinge, the observation window is arranged on the protection cover, and a handle is arranged on the protection cover; the test is integrally wrapped inside by the protective cover, so that the life injury caused by the breakage of the steel strand in the test process is prevented.
Preferably, the locking mechanism comprises a limiting plate, a lock pin and a spring, the protective cover is provided with a lock box, the limiting plate is slidably arranged in the lock box, the lock pin is arranged on the limiting plate, the lock pin penetrates through the lock box to be slidably arranged, one end of the spring is arranged on the inner wall of the lock box, the other end of the spring is connected with the limiting plate, the other end of the lock pin is provided with a handle, and the lock hole is provided with the top end of the bottom plate; pulling the handle pulls the lock pin into the lock box, simultaneously extrudes the spring, and when the protective cover is closed, the handle is released, and the lock pin is pushed into the lock hole through the elasticity of the spring to lock the protective cover.
Preferably, the locking mechanism comprises a locking block, a first threaded rod and a first handle, a cavity is formed in the bottom plate, the locking block is slidably mounted in the cavity, one end of the first threaded rod is mounted on the locking block, a threaded hole is formed in the bottom plate, the first threaded rod is mounted on the bottom plate in a threaded relation, and the first handle is mounted at the outward end of the first threaded rod; after the lockpin stretches into the lockhole, the first handle is rotated to drive the first threaded rod to rotate, the locking block is driven to slide in the cavity through the threaded relation, and then the locking block fixes the lockpin, so that the protective cover is prevented from being opened during a tensile test, and damage is caused to a human body.
Preferably, the test mechanism comprises a test bed, a screw rod, a sliding block and a motor, wherein the test bed is arranged at the top end of the bottom plate, the screw rod is rotatably arranged in the test bed, a sliding groove is formed in the top end of the test bed, the sliding block is slidably arranged in the sliding groove and is provided with internal threads, the sliding block is in threaded fit with the screw rod, the motor is arranged on the side wall of the test bed, and the output end of the motor is connected with the screw rod; after the first fixing mechanism slides into the second fixing mechanism to fix the steel strand, the motor is opened to drive the screw rod to rotate, and then the sliding block is driven to slide in the sliding groove through the threaded relation, so that the fixed steel strand is subjected to a tensile test.
Preferably, the first fixing mechanism comprises a mounting block, a cylinder, a mounting plate, a mounting column and an angle fixing rod, wherein the mounting block is mounted at the top end of the test bed, the cylinder is mounted on the mounting block, the mounting plate is mounted on the cylinder, the mounting column is mounted on the mounting plate, the angle fixing rod has a certain angle, one end of the angle fixing rod is mounted on the movable end of the cylinder, and the turning part of the angle fixing rod is rotatably mounted on the mounting column; one end of the steel strand is placed at the movable end of the air cylinder, the air cylinder is controlled to shrink, the movable end of the air cylinder pulls the angle fixing rod to rotate around the mounting column, and then the steel strand is fixed.
Preferably, the second fixing mechanism comprises a fixing frame, a fixing sliding block, a second threaded rod and a second handle, the fixing frame is arranged on the sliding block, the fixing sliding block is slidably arranged in the fixing frame, one end of the second threaded rod is arranged at the bottom end of the fixing sliding block, a threaded hole is formed in the bottom end of the fixing frame, the second threaded rod is arranged in the threaded hole in a threaded manner, the second handle is arranged at the bottom end of the second threaded rod, fixing grooves are formed in the fixing frame and the fixing sliding block, and the anti-slip mechanism is arranged in the fixing grooves; the steel strand passes through the fixing frame and the fixing groove of the fixing slide block, and then the fixing slide block is driven to slide in the fixing frame through a threaded relation by rotating the second handle until the anti-skid mechanism fixes the steel strand.
Preferably, the anti-skid mechanism comprises a mounting pad and anti-skid teeth, the mounting pad is arranged in a fixing groove of the fixed sliding block, and the anti-skid teeth are arranged on the mounting pad; the steel strand wires are fixed through being provided with anti-skidding tooth to provide great frictional force, prevent that the steel strand wires from reducing the precision that leads in the test relative mount and fixed slider slip and reduce.
Compared with the prior art, the utility model has the beneficial effects that: through protection mechanism to human protection when carrying out the experiment, prevent that the steel strand wires from breaking and causing the injury in the experiment, locking mechanical system and locking mechanical system fix protection mechanism, prevent to open in the experiment protection mechanism, and test mechanism carries out tensile test to the steel strand wires, and first fixed establishment and second fixed establishment fix the both ends of steel strand wires, and anti-skidding mechanism prevents that the steel strand wires from causing the error to the relative second fixed establishment slip, improves the accuracy.
Drawings
FIG. 1 is a schematic diagram of the structure of the present utility model;
FIG. 2 is a top cross-sectional view of the present utility model;
FIG. 3 is a cross-sectional view of the base plate of the present utility model;
FIG. 4 is a front cross-sectional view of the present utility model;
FIG. 5 is an isometric view of the present utility model;
FIG. 6 is a left side cross-sectional view of the present utility model;
FIG. 7 is a schematic view of a partial enlarged structure at A in FIG. 2 according to the present utility model;
FIG. 8 is a schematic view of a partially enlarged structure of the present utility model at B in FIG. 5;
FIG. 9 is a schematic view of a partially enlarged construction of the present utility model at C in FIG. 5;
the reference numerals in the drawings: 01. a protection mechanism; 11. a bottom plate; 12. a hinge; 13. a protective cover; 14. an observation window; 02. a locking mechanism; 21. a limiting plate; 22. a locking pin; 23. a spring; 24. a lock hole; 03. a locking mechanism; 31. a locking piece; 32. a first threaded rod; 33. a first handle; 04. a testing mechanism; 41. a test bed; 42. a screw rod; 43. a slide block; 44. a motor; 05. a first fixing mechanism; 51. a mounting block; 52. a cylinder; 53. a mounting plate; 54. a mounting column; 55. an angle fixing rod; 06. a second fixing mechanism; 61. a fixing frame; 62. a fixed slide block; 63. a second threaded rod; 64. a second handle; 07. an anti-slip mechanism; 71. a mounting pad; 72. anti-slip teeth.
Detailed Description
In order that the utility model may be readily understood, a more complete description of the utility model will be rendered by reference to the appended drawings. This utility model may be embodied in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete.
The microcomputer-controlled steel strand relaxation testing machine comprises a protection mechanism 01; the anti-slip device further comprises a locking mechanism 02, a locking mechanism 03, a test mechanism 04, a first fixing mechanism 05, a second fixing mechanism 06 and an anti-slip mechanism 07, wherein the locking mechanism 02 is arranged on the protection mechanism 01, the locking mechanism 03 is arranged inside the protection mechanism 01, the test mechanism 04 is arranged on the protection mechanism 01, the first fixing mechanism 05 is arranged on the test mechanism 04, the second fixing mechanism 06 is arranged on the test mechanism 04, and the anti-slip mechanism 07 is arranged on the second fixing mechanism 06; the protection mechanism 01 comprises a bottom plate 11, a hinge 12, a protection cover 13 and an observation window 14, wherein the protection cover 13 is rotatably arranged on the bottom plate 11 through the hinge 12, the observation window 14 is arranged on the protection cover 13, and a handle is arranged on the protection cover 13; the locking mechanism 02 comprises a limiting plate 21, a lock pin 22 and a spring 23, wherein a lock box is arranged on the protective cover 13, the limiting plate 21 is slidably arranged in the lock box, the lock pin 22 is arranged on the limiting plate 21, the lock pin 22 penetrates through the lock box to be slidably arranged, one end of the spring 23 is arranged on the inner wall of the lock box, the other end of the spring 23 is connected with the limiting plate 21, a handle is arranged at the other end of the lock pin 22, and a lock hole 24 is arranged at the top end of the bottom plate 11; the locking mechanism 03 comprises a locking block 31, a first threaded rod 32 and a first handle 33, wherein a cavity is formed in the bottom plate 11, the locking block 31 is slidably installed in the cavity, one end of the first threaded rod 32 is installed on the locking block 31, a threaded hole is formed in the bottom plate 11, the first threaded rod 32 is installed on the bottom plate 11 in a threaded relation, and the first handle 33 is installed at the outward end of the first threaded rod 32; the test mechanism 04 comprises a test bed 41, a screw rod 42, a sliding block 43 and a motor 44, wherein the test bed 41 is arranged at the top end of the bottom plate 11, the screw rod 42 is rotatably arranged in the test bed 41, a sliding groove is arranged at the top end of the test bed 41, the sliding block 43 is slidably arranged in the sliding groove, the sliding block 43 is provided with internal threads, the sliding block 43 is in threaded fit with the screw rod 42, the motor 44 is arranged on the side wall of the test bed 41, and the output end of the motor 44 is connected with the screw rod 42; the first fixing mechanism 05 comprises a mounting block 51, a cylinder 52, a mounting plate 53, a mounting column 54 and an angle fixing rod 55, wherein the mounting block 51 is mounted at the top end of the test stand 41, the cylinder 52 is mounted on the mounting block 51, the mounting plate 53 is mounted on the cylinder 52, the mounting column 54 is mounted on the mounting plate 53, the angle fixing rod 55 has a certain angle, one end of the angle fixing rod 55 is mounted on the movable end of the cylinder 52, and the turning part of the angle fixing rod 55 is rotatably mounted on the mounting column 54; the second fixing mechanism 06 comprises a fixing frame 61, a fixing sliding block 62, a second threaded rod 63 and a second handle 64, wherein the fixing frame 61 is arranged on the sliding block 43, the fixing sliding block 62 is slidably arranged in the fixing frame 61, one end of the second threaded rod 63 is arranged at the bottom end of the fixing sliding block 62, a threaded hole is formed in the bottom end of the fixing frame 61, the second threaded rod 63 is arranged in the threaded hole in a threaded manner, the second handle 64 is arranged at the bottom end of the second threaded rod 63, the fixing frame 61 and the fixing sliding block 62 are both provided with fixing grooves, and the anti-skid mechanism 07 is arranged in the fixing grooves; the anti-slip mechanism 07 includes a mounting pad 71 and anti-slip teeth 72, the mounting pad 71 being mounted in a fixing groove of the fixing slider 62, and the anti-slip teeth 72 being mounted on the mounting pad 71.
As shown in fig. 1 to 9, in the microcomputer controlled steel strand relaxation testing machine of the present utility model, when in operation, one end of a steel strand is firstly placed at the movable end of an air cylinder 52, then the air cylinder 52 is controlled to shrink, the movable end of the air cylinder 52 pulls an angle fixing rod 55 to rotate around a mounting post 54, thereby fixing the steel strand, then the steel strand passes through fixing grooves of a fixing frame 61 and a fixing sliding block 62, then the fixing sliding block 62 is driven to slide in the fixing frame 61 through a threaded relation by rotating a second handle 64 until an anti-slip tooth 72 fixes the steel strand, the steel strand is fixed through the anti-slip tooth 72, and a larger friction force is provided, the steel strand is prevented from being reduced in the test by sliding relative to the fixing frame 61 and the fixing sliding block 62, the locking pin 22 is pulled into a lock box, meanwhile, a spring 23 is extruded, after a protective cover 13 is closed, the steel strand is released, the locking pin 22 is pushed into the lock hole 24 through the elasticity of the spring 23, the lock hole 13 is locked, after the protective cover 22 is stretched into the lock hole 24, the first handle 33 is rotated, the first handle 33 is driven to rotate, the first handle 32 is driven to slide in the sliding relation, the sliding block 31 is driven to slide in the cavity 31 through the sliding relation, and the sliding of the sliding guide groove 43 is further prevented from being opened, and the sliding in the human body is further, the sliding relation is prevented from being damaged, and the sliding in the test, and the sliding relation is opened, and the sliding groove is fixed in the cavity by the sliding groove is 43, and the sliding is 43 is caused.
The number of mounting posts 54 and angle fixing bars 55 is not unique.
The motor 44 and cylinder 52 of the present utility model are commercially available and will be installed and operated by those skilled in the art in accordance with their attendant instructions without the need for creative effort by those skilled in the art.
The foregoing is merely a preferred embodiment of the present utility model, and it should be noted that it will be apparent to those skilled in the art that modifications and variations can be made without departing from the technical principles of the present utility model, and these modifications and variations should also be regarded as the scope of the utility model.
Claims (8)
1. The microcomputer-controlled steel strand relaxation testing machine comprises a protection mechanism (01); the anti-slip device is characterized by further comprising a locking mechanism (02), a locking mechanism (03), a test mechanism (04), a first fixing mechanism (05), a second fixing mechanism (06) and an anti-slip mechanism (07), wherein the locking mechanism (02) is arranged on the protection mechanism (01), the locking mechanism (03) is arranged in the protection mechanism (01), the test mechanism (04) is arranged on the protection mechanism (01), the first fixing mechanism (05) is arranged on the test mechanism (04), the second fixing mechanism (06) is arranged on the test mechanism (04), and the anti-slip mechanism (07) is arranged on the second fixing mechanism (06);
the protection mechanism (01) protects a human body when the steel strand is tested, the locking mechanism (02) and the locking mechanism (03) fix the protection mechanism (01), the test mechanism (04) performs a tensile test on the steel strand, the first fixing mechanism (05) and the second fixing mechanism (06) fix the two ends of the steel strand, and the anti-slip mechanism (07) prevents the steel strand from slipping.
2. The microcomputer control steel strand relaxation testing machine according to claim 1, wherein the protection mechanism (01) comprises a bottom plate (11), a hinge (12), a protection cover (13) and an observation window (14), the protection cover (13) is rotatably installed on the bottom plate (11) through the hinge (12), the observation window (14) is installed on the protection cover (13), and a handle is arranged on the protection cover (13).
3. The microcomputer control steel strand relaxation testing machine according to claim 2, wherein the locking mechanism (02) comprises a limiting plate (21), a lock pin (22) and a spring (23), a lock box is arranged on the protective cover (13), the limiting plate (21) is slidably mounted in the lock box, the lock pin (22) is mounted on the limiting plate (21), the lock pin (22) penetrates through the lock box to be slidably mounted, one end of the spring (23) is mounted on the inner wall of the lock box, the other end of the spring (23) is connected with the limiting plate (21), a handle is arranged at the other end of the lock pin (22), and the lock hole (24) is arranged at the top end of the bottom plate (11).
4. The microcomputer control steel strand relaxation testing machine according to claim 2, wherein the locking mechanism (03) comprises a locking piece (31), a first threaded rod (32) and a first handle (33), a cavity is formed in the base plate (11), the locking piece (31) is slidably mounted in the cavity, one end of the first threaded rod (32) is mounted on the locking piece (31), a threaded hole is formed in the base plate (11), the first threaded rod (32) is mounted on the base plate (11) in a threaded relation, and the first handle (33) is mounted at the outward end of the first threaded rod (32).
5. The microcomputer control steel strand relaxation testing machine according to claim 2, wherein the testing mechanism (04) comprises a testing stand (41), a screw rod (42), a sliding block (43) and a motor (44), the testing stand (41) is installed at the top end of the bottom plate (11), the screw rod (42) is rotatably installed inside the testing stand (41), a sliding groove is formed in the top end of the testing stand (41), the sliding block (43) is slidably installed in the sliding groove, the sliding block (43) is provided with internal threads, the sliding block (43) is in threaded fit with the screw rod (42), the motor (44) is installed on the side wall of the testing stand (41), and the output end of the motor (44) is connected with the screw rod (42).
6. The microcomputer control steel strand relaxation testing machine of claim 5, wherein the first fixing mechanism (05) comprises a mounting block (51), a cylinder (52), a mounting plate (53), a mounting post (54) and an angle fixing rod (55), the mounting block (51) is mounted on the top end of the test stand (41), the cylinder (52) is mounted on the mounting block (51), the mounting plate (53) is mounted on the cylinder (52), the mounting post (54) is mounted on the mounting plate (53), the angle fixing rod (55) has a certain angle, one end of the angle fixing rod (55) is mounted on the movable end of the cylinder (52), and a turning part of the angle fixing rod (55) is rotatably mounted on the mounting post (54).
7. The microcomputer control steel strand relaxation testing machine of claim 5, wherein the second fixing mechanism (06) comprises a fixing frame (61), a fixing sliding block (62), a second threaded rod (63) and a second handle (64), the fixing frame (61) is installed on the sliding block (43), the fixing sliding block (62) is slidably installed in the fixing frame (61), one end of the second threaded rod (63) is installed at the bottom end of the fixing sliding block (62), a threaded hole is formed in the bottom end of the fixing frame (61), the second threaded rod (63) is installed in the threaded hole through a threaded relationship, the second handle (64) is installed at the bottom end of the second threaded rod (63), the fixing frame (61) and the fixing sliding block (62) are both provided with fixing grooves, and the anti-skid mechanism (07) is installed in the fixing grooves.
8. The microcomputer controlled steel strand relaxation testing machine of claim 7, wherein the anti-slip mechanism (07) comprises a mounting pad (71) and anti-slip teeth (72), the mounting pad (71) is mounted in a fixing groove of the fixing slider (62), and the anti-slip teeth (72) are mounted on the mounting pad (71).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322100931.6U CN220251542U (en) | 2023-08-07 | 2023-08-07 | Microcomputer controlled steel strand relaxation tester |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322100931.6U CN220251542U (en) | 2023-08-07 | 2023-08-07 | Microcomputer controlled steel strand relaxation tester |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220251542U true CN220251542U (en) | 2023-12-26 |
Family
ID=89227544
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202322100931.6U Active CN220251542U (en) | 2023-08-07 | 2023-08-07 | Microcomputer controlled steel strand relaxation tester |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220251542U (en) |
-
2023
- 2023-08-07 CN CN202322100931.6U patent/CN220251542U/en active Active
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