A device for testing the mechanical properties of galvanized sheet

Abstract

The invention discloses a device for detecting the mechanical properties of a galvanized sheet, and relates to the technical field of detecting the mechanical properties of a galvanized sheet. The device comprises a pulling component for clamping the galvanized sheet and detecting the tensile strength and elongation of the galvanized sheet. The galvanized sheet is clamped by a plurality of clamping blocks in the pulling component. A knocking component for knocking the galvanized sheet is arranged at the upper end of the pulling component. The knocking component performs a knocking test on the galvanized sheet to restore the impact that the galvanized sheet may receive during use, so that the detection result is more in line with the actual working condition. A bending component for performing a bending test on the galvanized sheet is arranged at the lower end of the pulling component. The bending component drives the galvanized sheet to bend 180 degrees, and cooperates with the wiping block on the pulling component to complete the bending test on the galvanized sheet. The invention can automatically test all mechanical properties of the galvanized sheet, and improve the detection efficiency and accuracy.

Description

Technical Field

[0001] The invention relates to the technical field of mechanical property detection of galvanized sheet, and in particular to a mechanical property detection device for galvanized sheet. Background Art

[0002] Galvanized sheet refers to a steel sheet with a layer of zinc on the surface. Galvanizing is a commonly used economical and effective rust prevention method. About half of the world's zinc production is used for this process. Galvanized steel sheet is coated with a layer of metal zinc on the surface of the steel sheet to prevent corrosion and extend its service life. This zinc-coated steel sheet is called galvanized sheet. Galvanized sheet is widely used in daily life, and the mechanical properties of galvanized sheet need to be guaranteed.

[0003] The mechanical properties of galvanized sheets are tested from two points, tensile test and bending test. Generally speaking, only galvanized sheets for structure, tensile and deep drawing have tensile performance requirements. Among them, structural galvanized sheets require yield point, tensile strength and elongation, etc.; tensile sheets only require elongation. Bending test is the main item to measure the process performance of thin sheets. Generally, it is required that after the galvanized sheet is bent 180°, the zinc layer on the outer surface shall not be detached, and the base of the sheet shall not have cracks or breaks.

[0004] The Chinese invention patent with announcement number CN109029957B discloses a galvanized steel plate mechanical property testing machine and a testing method thereof, including a work frame, a fixed locking device is symmetrically arranged on the inner side of the front and rear ends of the work frame, and an execution device is symmetrically arranged on the outer side of the front and rear ends of the work frame. A pressing cylinder is installed on the inner wall of the upper end of the work frame, and the top of the pressing cylinder is installed on the pressing fixing plate through a flange. A working support plate is installed between the inner walls of the work frame. The main technical problem solved by this device is the feeding problem when the mechanical properties of the galvanized sheet are tested. This device is not perfect enough to test the mechanical properties of the galvanized sheet, and it is impossible to test the mechanical properties of the galvanized sheet in all directions. Summary of the invention

[0005] In view of the problems existing in the above-mentioned technologies, the present invention proposes a device for detecting the mechanical properties of a galvanized sheet.

[0006] The present invention aims at solving the above technical problems and adopts the following technical solutions: a device for detecting the mechanical properties of a galvanized sheet, comprising a pulling component, a galvanized sheet is arranged on the pulling component, a bending component is arranged at the lower end of the pulling component, a knocking component is arranged at the upper end of the pulling component, the pulling component comprises a base, two sets of fastening mechanisms are respectively arranged on the base for sliding and fixing, the two sets of fixed fastening mechanisms are installed at one end of the base, a motor 1 is arranged on the fixed wiping mechanism, a screw rod 1 is arranged on the output shaft of the motor 1, the screw rod 1 is rotatably connected to the base, the two sets of sliding fastening mechanisms are connected to the screw rod 1 by threads, and the fastening mechanism comprises The invention comprises a moving block and a clamping block 1, wherein the clamping block 1 and the moving block clamp the galvanized sheet, a wiping mechanism is arranged at the lower end of the pulling assembly, the knocking assembly comprises a connecting rod slidably mounted on the base, a supporting plate is arranged on the connecting rod, a plurality of swinging mechanisms are arranged on the supporting plate, the swinging mechanism comprises a knocking head, and the knocking head is fitted with the galvanized sheet, the bending assembly comprises an outer cylinder mounted at the lower end of the base, an electric cylinder is arranged in the outer cylinder, a moving column is arranged at the movable end of the electric cylinder, a torsion mechanism is arranged for rotation inside the moving column, and the torsion mechanism comprises a clamping block 2.

[0007] Furthermore, the fastening mechanism includes a moving block, a screw rod 2 is fixedly provided on the moving block, a clamping block 1 is slidably installed on the screw rod 2, a spring is provided between the clamping block 1 and the moving block, a gear 1 is rotatably provided on the screw rod 2, the gear 1 is connected to the screw rod 2 by threads, a fastening motor is provided on the clamping block 1, a gear 2 is provided on the output shaft of the fastening motor, and the gear 2 is meshed with the gear 1.

[0008] Furthermore, one end of the clamping block is provided with an inclined surface, and the inclined surface on the clamping block is intermittently fitted with the galvanized sheet.

[0009] Furthermore, the wiping mechanism also includes a rack 1 and a protruding block installed at the bottom end of the base, the protruding blocks are arranged in multiple groups, a movable plate is slidably arranged on the base, the wiping block is slidably arranged in the movable plate, one end of the wiping block is fitted with the bent galvanized plate, and the other end of the wiping block is intermittently fitted with the protruding block, a motor 2 is arranged on the movable plate, a gear 3 is arranged on the output shaft of the motor 2, the gear 3 is meshed with the rack 1, and two groups of pressure sensors are arranged on the base.

[0010] Furthermore, the knocking assembly includes a mobile motor installed on the side of the connecting rod, a gear four is arranged on the output shaft of the mobile motor, a rack two is arranged on the side of the base, and the gear four is meshed with the rack two.

[0011] Furthermore, the swing mechanism includes a rotating disk rotatably mounted on a support plate, two groups of driving circular plates are arranged on the rotating disk, a swing rod is swingably arranged on the support plate, a groove plate 1 and a groove plate 2 are arranged on the swing rod, the groove plate 1 and the groove plate 2 are respectively slidably connected to a group of driving circular plates, one end of the swing rod swings with the support plate, and the other end of the swing rod is rotatably connected to the striking head.

[0012] Furthermore, a striking motor is arranged on the support plate, and an output shaft of the striking motor is coaxially arranged with the rotating disks in the plurality of swing mechanisms.

[0013] Furthermore, the torsion mechanism includes a rotating column rotatably installed in the moving column, a rotating motor is arranged at one end of the rotating column, a gear five is arranged on the output shaft of the rotating motor, an outer gear ring is arranged inside the moving column, the gear five is meshed with the outer gear ring, a motor three and a sliding rod are arranged at the other end of the rotating column, a screw rod three is arranged on the output shaft of the motor three, a clamping block two is slidably arranged on the sliding rod, and the clamping block two and the screw rod three are connected by threads.

[0014] Furthermore, a chamber is provided in the clamping block 2, a push rod 1 is provided on the sliding rod, a push rod 2 is provided at one end of the chamber provided in the clamping block 2, and multiple groups of push rods 3 are provided at the other end of the chamber, and the push rod 2 is intermittently fitted with the push rod 1.

[0015] Compared with the prior art, the present invention has the following beneficial effects: (1) The present invention can detect the mechanical properties of the galvanized sheet according to the different types of the galvanized sheet by means of the pulling component and the bending component, thereby improving the detection range of the present invention; (2) The clamping block arranged in the pulling component of the present invention can clamp the galvanized sheets of different thicknesses, and the galvanized sheet is not easy to fall off when being pulled; (3) The present invention can bend the galvanized sheet 180° by means of the bending component, thereby completing the bending test of the galvanized sheet, and when the bending test is not required, the bending component will not affect other detection functions; (4) The present invention performs a knocking test on the galvanized sheet by means of the knocking component, thereby restoring the impact that the galvanized sheet may be subjected to during use, thereby making the detection result more in line with the actual working conditions. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a front view of the overall structure of the present invention.

[0017] Figure 2 It is a schematic diagram of the overall structure of the present invention.

[0018] Figure 3 It is a schematic diagram of the structure of the pulling component of the present invention.

[0019] Figure 4 It is a schematic diagram of the structure of the moving block of the present invention.

[0020] Figure 5 It is a cross-sectional view of the movable block structure of the present invention.

[0021] Figure 6 It is a schematic diagram of the local structure of the pulling component of the present invention.

[0022] Figure 7 It is a cross-sectional view of the movable plate structure of the present invention.

[0023] Figure 8 It is a schematic diagram of the structure of the knocking component of the present invention.

[0024] Fig. 9 It is a schematic diagram of the local structure of the knocking component of the present invention.

[0025] Fig.10 for Fig. 9 Enlarged schematic diagram at point A in the middle.

[0026] Fig.11 It is a schematic diagram of the structure of the rotating disk of the present invention.

[0027] Fig.12 It is a schematic diagram of the structure of the bending component of the present invention.

[0028] Fig.13 for Fig.12 Enlarged schematic diagram of point B in the middle.

[0029] Fig.14 It is a cross-sectional view of the bending component structure of the present invention.

[0030] Fig.15 Schematic diagram of the rotating column structure of the present invention.

[0031] Reference numerals: 1-galvanized sheet; 2-pulling assembly; 3-knocking assembly; 4-bending assembly; 201-moving block; 202-base; 203-motor 1; 204-screw rod 1; 205-screw rod 2; 206-gear 1; 207-gear 2; 208-clamping block 1; 209-spring; 210-pressure sensor; 211-moving plate; 212-wiping block; 213-rack 1; 214-gear 3; 215-protruding block; 216-motor 2; 301-connecting rod; 302- Support plate; 303-gear four; 304-rack two; 305-rotating disk; 306-swinging rod; 307-grooved plate one; 308-grooved plate two; 309-knocking head; 310-driving circular plate; 401-outer cylinder; 402-sliding rod; 403-screw three; 404-clamping block two; 405-motor three; 406-rotating column; 410-electric cylinder; 411-moving column; 412-outer gear ring; 413-gear five; 414-lift rod one; 415-lift rod two; 416-lift rod three. DETAILED DESCRIPTION

[0032] The specific implementation of the device of the present invention is further described below in conjunction with the accompanying drawings and exemplary embodiments.

[0033] refer to Figures 1 to 15 As shown, a galvanized sheet mechanical property testing device includes a pulling component 2 for clamping the galvanized sheet 1 and testing the tensile strength and elongation of the galvanized sheet 1, a knocking component 3 for knocking the galvanized sheet is arranged at the upper end of the pulling component 2, and a bending component 4 for performing a bending test on the galvanized sheet 1 is arranged at the lower end of the pulling component 2.

[0034] The pulling assembly 2 includes a base 202, one end of which is fixedly provided with two groups of moving blocks 201, both of which are provided with a motor 203, and the output shaft of the motor 203 is provided with a screw 204, and the base 202 is also provided with two groups of moving blocks 201 for sliding, the sliding moving blocks 201 are connected to the screw 204 through threads, the moving blocks 201 are fixedly provided with a screw 205, a clamping block 208 is slidably mounted on the screw 205, a spring 209 is provided between the clamping block 208 and the moving block 201, a gear 206 is rotatably provided on the screw 205, the gear 206 is connected to the screw 205 through threads, and the clamping block 208 is provided with a spring 209 between the clamping block 208 and the moving block 201, and the screw 205 is rotatably provided with a gear 206, and the gear 206 is connected to the screw 205 through threads. 08 is provided with a fastening motor, and a gear 207 is provided on the output shaft of the fastening motor, and the gear 207 is meshed with the gear 1 206. A clamping block 208 is provided with an inclined surface at one end, and the inclined surface on the clamping block 208 is intermittently fitted with the galvanized plate 1. Two groups of pressure sensors 210 are provided at the upper end of the base 202, and a rack 213 and a protruding block 215 are installed at the bottom end of the base 202. The protruding block 215 is provided with multiple groups. A moving plate 211 is slidably provided on the base 202, and a wiping block 212 is slidably installed in the moving plate 211. One end of the wiping block 212 is fitted with the bent galvanized plate 1, and the other end of the wiping block 212 is intermittently fitted with the protruding block 215. The moving plate 211 is provided with an electric Machine 216, gear 3 214 is arranged on the output shaft of motor 216, gear 3 214 is meshed with rack 1 213, two sets of pressure sensors 210 are arranged on base 202, when clamping galvanized sheet 1, start the tightening motor, the tightening motor drives gear 207 to rotate, gear 207 drives gear 1 206 to rotate, gear 1 206 is connected with screw rod 205 by thread, gear 1 206 slides on screw rod 205 when rotating, gear 1 206 drives clamping block 1 208 to move on screw rod 205, clamping block 1 208 squeezes spring 209 when moving, and the inclined surface of clamping block 1 208 cooperates with moving block 201 to clamp galvanized sheet 1, which needs When the galvanized sheet 1 is pulled, the motor 203 is started, the motor 203 drives the screw 204 to rotate, the screw 204 drives the two groups of moving blocks 201 to move, the moving block 201 pulls the galvanized sheet 1, and when the curved surface of the galvanized sheet 1 is wiped, the motor 216 is started, the motor 216 drives the gear 3 214 to rotate, the gear 3 214 meshes with the rack 1 213, the gear 3 214 drives the moving plate 211 to slide on the base 202, and the moving plate 211 drives the wiping block 212 to move when it moves, and the wiping block 212 shakes up and down when it fits with the raised block 215 to wipe the curved surface of the galvanized sheet 1 to avoid the zinc layer on the galvanized sheet being loosened but not falling off, causing misjudgment.

[0035] The knocking assembly 3 includes a connecting rod 301 slidably mounted on the base 202, a moving motor is arranged on the connecting rod 301, a gear 4 303 is arranged on the output shaft of the moving motor, a rack 2 304 is arranged on the side of the base 202, the gear 4 303 is meshed with the rack 2 304, a supporting plate 302 is arranged on the connecting rod 301, a knocking motor is arranged on the supporting plate 302, a plurality of rotating disks 305 are arranged on the output shaft of the knocking motor, the rotating disk 305 is rotatably connected with the supporting plate 302, two groups of driving circular plates 310 are arranged on the rotating disk 305, a swinging rod 306 is swingably arranged on the supporting plate 302, a grooved plate 1 307 and a grooved plate 2 308 are arranged on the swinging rod 306, the grooved plate 1 307 and the grooved plate 2 308 are respectively slidably connected with a group of driving circular plates 310, and the swinging rod 3 06 one end and support plate 302 swing, swing rod 306 the other end is provided with knocking head 309, when need to knock on the surface of galvanized sheet 1, start moving motor, moving motor drives gear four 303 to rotate, gear four 303 moves on rack two 304, gear four 303 drives connecting rod 301 to slide on base 202, start knocking motor at the same time, knocking motor drives rotating disk 305 to rotate, rotating disk 305 drives two sets of driving circular plates 310 to rotate, driving circular plates 310 drives grooved plate one 307 and grooved plate two 308 to swing, grooved plate one 307 and grooved plate two 308 drive swing rod 306 to swing, swing rod 306 slides on support plate 302 at the same time, swing rod 306 drives knocking head 309 to contact with galvanized sheet 1 when swinging, knocks galvanized sheet 1.

[0036] The bending assembly 4 includes an outer cylinder 401 installed at the lower end of the base 202, an electric cylinder 410 is arranged in the outer cylinder 401, a moving column 411 is arranged at the movable end of the electric cylinder 410, and the moving column 411 is slidably connected to the outer cylinder 401. A rotating column 406 is rotatably arranged in the moving column 411, a rotating motor is arranged at one end of the rotating column 406, and a gear 5 413 is arranged on the output shaft of the rotating motor. An outer gear ring 412 is arranged inside the moving column 411, and the gear 5 413 is meshed with the outer gear ring 412. The rotating column 406 is also provided with a rotating motor. A motor 3 405 and a sliding rod 402 are provided at one end, a screw rod 3 403 is provided on the output shaft of the motor 3 405, a clamping block 2 404 is slidably provided on the sliding rod 402, the clamping block 2 404 is connected to the screw rod 3 403 by threads, a chamber is provided in the clamping block 2 404, a push rod 1 414 is provided on the sliding rod 402, a push rod 2 415 is provided at one end of the chamber provided in the clamping block 2 404, a plurality of push rod 3 416 are provided at the other end of the chamber, and the push rod 2 415 is intermittently fitted with the push rod 1 414.

[0037] Working principle: When working, start the fastening motor, the fastening motor drives gear 2 207 to rotate, gear 207 drives gear 1 206 to rotate, gear 1 206 is connected to screw rod 205 by threads, gear 1 206 slides on screw rod 205 when rotating, gear 1 206 drives clamping block 1 208 to move on screw rod 205, clamping block 1 208 squeezes spring 209 when moving, and at the same time, the inclined surface of clamping block 1 208 cooperates with moving block 201 to clamp the galvanized plate 1.

[0038] When it is necessary to knock on the galvanized sheet 1, start the moving motor, the moving motor drives the gear four 303 to rotate, the gear four 303 moves on the rack two 304, the gear four 303 drives the connecting rod 301 to slide on the base 202, and at the same time start the knocking motor, the knocking motor drives the rotating disk 305 to rotate, the rotating disk 305 drives two sets of driving circular plates 310 to rotate, the driving circular plates 310 drive the grooved plate one 307 and the grooved plate two 308 to swing, the grooved plate one 307 and the grooved plate two 308 drive the swing rod 306 to swing, and at the same time the swing rod 306 slides on the support plate 302, and when the swing rod 306 swings, it drives the knocking head 309 to contact the galvanized sheet 1, and knocks the galvanized sheet 1.

[0039] When the tensile strength and elongation of the galvanized sheet 1 need to be tested, start the motor 203, the motor 203 drives the screw 204 to rotate, the screw 204 drives the two sets of moving blocks 201 to move, the moving blocks 201 pull the galvanized sheet 1, and then measure the tensile strength and elongation of the galvanized sheet 1.

[0040] When it is necessary to perform a bending test on the galvanized sheet 1, the galvanized sheet 1 on the two sets of sliding moving blocks 201 is loosened, and then the motor 1 203 is started to move the two sets of moving blocks 201 to fit with the two fixed sets of moving blocks 201. At this time, one end of the galvanized sheet 1 is not clamped and falls on the outer cylinder 401. At this time, the electric cylinder 410 is started, and the electric cylinder 410 pushes the moving column 411 to slide in the outer cylinder 401. The moving column 411 drives the rotating column 406 to move, and then the motor 3 405 is started, and the motor 3 405 drives the screw rod 3 403 to rotate, and the screw rod 3 403 is rotated. Rod three 403 drives clamping block two 404 to slide on sliding rod 402. When the lower end of clamping block two 404 fits with the lower end of galvanized plate 1, electric cylinder 410 is started. Electric cylinder 410 drives moving column 411 and rotating column 406 to move backward. When the side of galvanized plate 1 fits with the side of clamping block two 404, electric cylinder 410 is stopped. At this time, the upper end of galvanized plate 1 does not fit with clamping block two 404, and the lower end of galvanized plate 1 fits with clamping block two 404. At this time, motor three 405 is started again. Motor three 405 drives clamping block two 404 to rise. At this time, push rod one 414 hits the second push rod 415, and the second push rod 415 drives the third push rod 416 through the chamber. The third push rod 416 and the lower end of the clamping block 2 404 clamp the galvanized sheet 1. At this time, the motor 3 405 is stopped, and then the rotating motor is started. The rotating motor drives the gear 5 413 to rotate, and the gear 5 413 rotates on the outer gear ring 412. The gear 5 413 drives the rotating column 406 to rotate, and the rotating column 406 drives the clamping block 2 404 to rotate. The clamping block 2 404 drives the galvanized sheet 1 to bend. When the galvanized sheet 1 is bent to fit with the pressure sensor 210 , the pressure sensor 210 sends a signal, and the galvanized sheet 1 is bent 180 degrees. The motor stops rotating and the motor 216 is started. The motor 216 drives the gear 3 214 to rotate. The gear 3 214 meshes with the rack 1 213. The gear 3 214 drives the moving plate 211 to slide on the base 202. When the moving plate 211 moves, it drives the wiping block 212 to move. When the wiping block 212 and the raised block 215 are in contact, they shake up and down to wipe the curved surface of the galvanized sheet 1 to avoid the zinc layer on the galvanized sheet being loosened but not falling off, causing misjudgment.

[0041] The present invention is not limited to the above-mentioned specific implementation modes. Various changes made by technicians in the relevant technical field based on the above-mentioned conception without creative work all fall within the protection scope of the present invention.

Claims

1. A galvanized sheet mechanical property testing device, comprising a pulling component (2), a galvanized sheet (1) being arranged on the pulling component (2), a bending component (4) being arranged at the lower end of the pulling component (2), and a knocking component (3) being arranged at the upper end of the pulling component (2), characterized in that: The pulling assembly (2) comprises a base (202), on which two sets of fastening mechanisms are respectively slidably and fixedly arranged, the two sets of fixed fastening mechanisms are installed at one end of the base (202), a motor 1 (203) is arranged on the fixed wiping mechanism, a screw 1 (204) is arranged on the output shaft of the motor 1 (203), the screw 1 (204) is rotatably connected to the base (202), the two sets of sliding fastening mechanisms are connected to the screw 1 (204) by threads, the fastening mechanism comprises a moving block (201) and a clamping block 1 (208), the clamping block 1 (208) and the moving block (201) clamp the galvanized sheet (1), and the wiping mechanism is arranged at the lower end of the pulling assembly (2). The knocking assembly (3) comprises a connecting rod (301) slidably mounted on a base (202), a supporting plate (302) being disposed on the connecting rod (301), a plurality of swinging mechanisms being disposed on the supporting plate (302), the swinging mechanisms comprising a knocking head (309), the knocking head (309) being in contact with the galvanized sheet (1), the bending assembly (4) comprising an outer cylinder (401) mounted on the lower end of the base (202), an electric cylinder (410) being disposed inside the outer cylinder (401), a movable column (411) being disposed at the movable end of the electric cylinder (410), a twisting mechanism being rotatably disposed inside the movable column (411), the twisting mechanism comprising a clamping block 2 (404); The fastening mechanism comprises a moving block (201), a screw rod 2 (205) is fixedly provided on the moving block (201), the clamping block 1 (208) is slidably mounted on the screw rod 2 (205), a spring (209) is provided between the clamping block 1 (208) and the moving block (201), a gear 1 (206) is rotatably provided on the screw rod 2 (205), the gear 1 (206) is connected to the screw rod 2 (205) by threads, a fastening motor is provided on the clamping block 1 (208), a gear 2 (207) is provided on the output shaft of the fastening motor, the gear 2 (207) is meshed with the gear 1 (206), and an inclined surface is provided at one end of the clamping block 1 (208), and the inclined surface on the clamping block 1 (208) is intermittently fitted with the galvanized sheet (1); The wiping mechanism further comprises a rack 1 (213) and a protruding block (215) mounted at the bottom end of the base (202), wherein the protruding block (215) is provided in a plurality of groups, a movable plate (211) is slidably provided on the base (202), a wiping block (212) is slidably provided in the movable plate (211), one end of the wiping block (212) is fitted with the bent galvanized plate (1), and the other end of the wiping block (212) is intermittently fitted with the protruding block (215), a motor 2 (216) is provided on the movable plate (211), a gear 3 (214) is provided on the output shaft of the motor 2 (216), and the gear 3 (214) is meshed with the rack 1 (213), and two groups of pressure sensors (210) are provided on the base (202).

2. A galvanized sheet mechanical properties testing device according to claim 1, characterized in that: The striking assembly (3) comprises a movable motor mounted on the side of the connecting rod (301), a gear four (303) being arranged on the output shaft of the movable motor, a rack two (304) being arranged on the side of the base (202), and the gear four (303) being meshed with the rack two (304).

3. A galvanized sheet mechanical properties testing device according to claim 2, characterized in that: The swing mechanism comprises a rotating disk (305) rotatably mounted on a support plate (302), two groups of driving circular plates (310) being arranged on the rotating disk (305), a swing rod (306) being swingably arranged on the support plate (302), a first groove plate (307) and a second groove plate (308) being arranged on the swing rod (306), the first groove plate (307) and the second groove plate (308) being slidably connected to a group of driving circular plates (310) respectively, one end of the swing rod (306) swings with the support plate (302), and the other end of the swing rod (306) is rotatably connected to a striking head (309).

4. A galvanized sheet mechanical properties testing device according to claim 3, characterized in that: A striking motor is arranged on the support plate (302), and the output shaft of the striking motor is coaxially arranged with the rotating disk (305) in the plurality of sets of swing mechanisms.

5. A galvanized sheet mechanical property testing device according to claim 1, characterized in that: The torsion mechanism comprises a rotating column (406) rotatably mounted in a moving column (411), a rotating motor being arranged at one end of the rotating column (406), a gear five (413) being arranged on the output shaft of the rotating motor, an outer gear ring (412) being arranged inside the moving column (411), the gear five (413) being meshed with the outer gear ring (412), a motor three (405) and a sliding rod (402) being arranged at the other end of the rotating column (406), a screw rod three (403) being arranged on the output shaft of the motor three (405), a clamping block two (404) being slidably arranged on the sliding rod (402), and the clamping block two (404) and the screw rod three (403) being connected by threads.

6. A galvanized sheet mechanical property testing device according to claim 5, characterized in that: A chamber is arranged in the clamping block 2 (404), a push rod 1 (414) is arranged on the sliding rod (402), a push rod 2 (415) is arranged at one end of the chamber arranged in the clamping block 2 (404), and a plurality of groups of push rods 3 (416) are arranged at the other end of the chamber, and the push rod 2 (415) is intermittently fitted with the push rod 1 (414).

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