A device for detecting plastic yield strength of a metal material

Abstract

The application provides a metal material plastic yield strength detection device, and belongs to the technical field of metal detection. The device comprises a support table, a detection table arranged on one side of the support table through a screw, and grooves formed in the inner wall of the detection table on both sides. When the device is used, the output end of a hydraulic rod is controlled to move downward, a first connecting seat is further driven by a pressing rod to move downward, the distance between two transmission plates can be adjusted, the two sides of a metal plate to be detected are respectively placed below the two pressing plates, the output ends of two electric push rods are controlled to move downward, the two pressing plates are pressed on the metal plate, the output end of the hydraulic rod is controlled to move downward, the two connecting plates are controlled to move away from each other, and the two pressing plates pull the two sides of the metal plate. Therefore, when detection is performed, the two sides of the metal plate are pulled, the stress distribution of the metal plate under actual working conditions can be simulated, and the yield strength and plastic properties of the metal material can be more truly tested.

Description

Technical Field

[0001] This invention relates to the field of metal testing, and more particularly to a device for testing the plastic yield strength of metallic materials. Background Technology

[0002] The plastic yield strength of metallic materials is an important indicator for measuring the deformation capacity and stability of metals under stress. It is of great significance for the structural design, manufacturing process and safety assessment of metals. In practical applications, metallic materials will undergo plastic deformation to varying degrees when subjected to external forces. Among them, the yield strength is the critical point at which a metallic material begins to undergo significant plastic deformation. In order to ensure that the performance of metallic materials meets engineering requirements, it is crucial to accurately measure their yield strength and plasticity characteristics.

[0003] However, in the yield strength test of metal plates, some testing devices apply stress only by pulling one side of the metal plate. This unilateral stretching method cannot effectively simulate the stress state of metal materials under actual working conditions. In actual applications, metal materials are subjected to uniform tension on both sides at the same time. Secondly, the mechanical sensors in some devices are not effectively protected and are easily exposed to the external environment, which can lead to their damage and affect the accuracy of the test results. Summary of the Invention

[0004] This invention provides a device for testing the plastic yield strength of metallic materials. During testing, the device stretches both sides of a metal plate to simulate the stress distribution of the metal plate under actual working conditions, thus more realistically testing the yield strength and plasticity of the metallic material. When not in use, the device protects the mechanical sensor to prevent it from being exposed and damaged, which could affect the accuracy of the test results. When using the device, the testing part is cleaned to improve the accuracy of the test results.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: a device for testing the plastic yield strength of metallic materials, the device comprising:

[0006] Support platform;

[0007] The testing table is screwed to one side of the support platform, and sliding grooves are provided on both sides of the inner wall of the testing table. The testing table can be removed from the support platform by rotating the screws.

[0008] Two transmission plates are slidably disposed on the inner walls of the two slide grooves. A connecting plate is fixedly disposed on one side of each of the two transmission plates. The two transmission plates can slide on the inner walls of the two slide grooves. When the two connecting plates move, they drive the two transmission plates to move.

[0009] Support, fixedly arranged on one side of the support table, and a hydraulic rod is installed at the center of one side of the support, and the support supports the hydraulic rod, so that the hydraulic rod is installed above the support table;

[0010] The pressing rod is fixedly arranged on the output end of the hydraulic rod, and a first connecting seat is fixedly arranged on one side of the pressing rod. By controlling the downward movement of the output end of the hydraulic rod, the first connecting seat is further moved downward by the pressing rod, and the distance between the two transmission plates can be adjusted.

[0011] As a further improvement of the present application: two connecting plates are installed at the center of one side of the connecting plate, and two output ends of the electric push rod are fixedly arranged on the output end of the electric push rod. The inner wall of the first connecting seat is fixedly provided with two first horizontal rods, and the outer surface of the two first horizontal rods is movably provided with a support plate. The side of the two support plates is movably embedded with a second horizontal rod, and the two ends of the two second horizontal rods are fixedly provided with a second connecting seat. The two second connecting seats are respectively fixedly arranged on the center of one side of the two connecting plates. The two support plates are respectively rotated about the two first horizontal rods or the two second horizontal rods, and the two transmission plates can slide in the inner wall of the two sliding grooves. When the first connecting seat moves downward, the two support plates are pressed, and the lower ends of the two support plates respectively push the two second connecting seats, so that the two connecting plates drive the two transmission plates to move in opposite directions. When the first connecting seat moves upward, the two support plates are pulled, and the lower ends of the two support plates respectively pull the two second connecting seats, so that the two connecting plates drive the two transmission plates to move in opposite directions.

[0012] As a further improvement of the present application: the detection table is fixedly provided with a protection box on one side, and the inner walls of the two sides of the protection box are fixedly provided with square plates. The side of the two square plates is fixedly provided with a first spring, and the one end of the two first springs is fixedly provided with a mounting plate. The material yield strength of the metal plate is detected by the mechanical sensor, and the mechanical sensor is located in the interior of the protection box to prevent the mechanical sensor from being damaged by being exposed to the outside. The two first springs are pressed by the mounting plate and the two square plates, and the two first springs have elastic force.

[0013] As a further improvement of the present application: the inner wall of the mounting plate is provided with a mechanical sensor, and the side of the support table is provided with a display plate. The mechanical sensor is connected with the display plate through a transmission line. The material yield strength of the metal plate is detected by the mechanical sensor, and the mechanical sensor contacts the metal plate for detection. The detection result is displayed through the display plate through the transmission line.

[0014] As a further improvement of the present application: one side of the support is fixedly provided with a display plate, the pressure rod is movably embedded on one side of the display plate, a circular plate is movably embedded on the inner wall of the display plate, the circular plate is fixedly sleeved on the outer surface of the hydraulic rod, the pressure rod can slide on one side of the display plate, the circular plate moves downward, the circular plate compresses the gas below the circular plate in the display plate, and the gas is compressed into the inside of the shunt pipe through the pipeline.

[0015] As a further improvement of the present application: a pipeline is fixedly arranged on the outer surface of the display plate, one end of the pipeline is fixedly provided with a shunt pipe, and the two ends of the shunt pipe are fixedly provided with first telescopic rods.

[0016] As a further improvement of the present application: second telescopic rods are movably embedded on the inner walls of the two first telescopic rods, and one end of each of the two second telescopic rods is fixedly arranged on one side of the mounting plate. The two second telescopic rods can slide on the inner walls of the two first telescopic rods, and at this time, the two second telescopic rods move upward under the pushing of the gas, and further push the mechanical sensor upward through the mounting plate.

[0017] As a further improvement of the present application: opposite sides of the two transmission plates are fixedly provided with pull plates, opposite sides of the two pull plates are fixedly provided with cover plates, and a through slot is formed in the side of the detection table close to the two cover plates. The two transmission plates move away from each other, further drive the two cover plates to move relative to each other through the two pull plates, so that the through slot is exposed, and the mechanical sensor can be extended.

[0018] As a further improvement of the present application: two first sleeve rods are fixedly arranged on one side of each of the two cover plates, second sleeve rods are movably embedded on the inner walls of the plurality of first sleeve rods, second springs are movably sleeved on the outer surfaces of the plurality of second sleeve rods, the plurality of second sleeve rods can slide in the inner walls of the plurality of first sleeve rods, and the plurality of second springs have elastic force. During detection, the metal plate is above the two fixed plates, the two fixed plates are pushed by the elastic force of the plurality of second springs, and the two cleaning brushes are tightly attached to one side of the metal plate.

[0019] As a further improvement of the present application: the plurality of second sleeve rods are divided into two groups, one end of each of the two groups of second sleeve rods is fixedly provided with a fixed plate, and one side of each of the two fixed plates is fixedly provided with a cleaning brush. The two cleaning brushes are tightly attached to one side of the metal plate, and when moving to both sides, the two moving cleaning brushes clean the detection area of the metal plate.

[0020] Compared with the prior art, the present application has the advantages and positive effects that,

[0021] 1. The application, when detecting the strength of the metal plate, two supporting plates are rotated with two first horizontal rods or two second horizontal rods as the shaft, and two transmission plates can slide on the inner wall of two sliding grooves, when the first connecting seat moves downward, it will press two supporting plates, and the lower end of the two supporting plates will further push two second connecting seats, and the two connecting plates will further drive two transmission plates to move in opposite directions, when the first connecting seat moves upward, it will pull two supporting plates, and the lower end of the two supporting plates will further pull two second connecting seats, and the two connecting plates will further drive two transmission plates to move in opposite directions, by controlling the downward movement of the output end of the hydraulic rod, and further driving the first connecting seat downward by the pressure rod, the distance between the two transmission plates can be adjusted, and the two sides of the metal plate to be detected are placed below the two pressure plates, the output end of the two electric push rods is controlled to move downward, and the two pressure plates are pressed on the metal plate, and the output end of the hydraulic rod is controlled to move downward, and the two connecting plates move away from each other, and the two pressure plates pull the two sides of the metal plate, so that the two sides of the metal plate are pulled during detection, and the stress distribution of the metal plate under actual working conditions can be simulated, and the yield strength and plasticity of the metal material can be more truly tested.

[0022] 2. The application, when using the detection device, the material yield strength of the metal plate is detected by the mechanical sensor, the mechanical sensor is inside the protection box, and the mechanical sensor is prevented from being damaged by being exposed, during detection, the pressure rod moves downward, further driving the circular plate to move downward, the circular plate compresses the gas below the circular plate inside the display plate, the gas is compressed into the inside of the shunt pipe through the conduit, further through the two ends of the shunt pipe, the gas is discharged into the inside of the two first telescopic rods, the two second telescopic rods can slide on the inner wall of the two first telescopic rods, at this time, the two second telescopic rods move upward under the push of the gas, further pushing the mechanical sensor upward through the mounting plate, and the mounting plate and the two square plates press the two first springs, the two first springs have elastic force, during detection, the two transmission plates move away from each other, further driving the two cover plates to move relative to each other through the two pull plates, so that the through slot is exposed, at this time, the upward moving mechanical sensor contacts the metal plate for detection, the detection result is displayed through the display plate through the transmission line, after detection, the two first telescopic rods are not pressed by the gas, the elastic force of the two first springs pushes the mounting plate, further making the two second telescopic rods return to the inside of the two first telescopic rods, and the mechanical sensor is recovered to the inside of the protection box, and the two cover plates move away from each other to block the through slot, so that the mechanical sensor is protected when not detecting, and the mechanical sensor is prevented from being damaged by being exposed, and the accuracy of the detection result is affected.

[0023] 3、The application, in detection, a plurality of second sleeves can slide at the inner wall of a plurality of first sleeves respectively, a plurality of second springs have elastic force, the metal plate is above the two fixed plates during detection, the two fixed plates are pushed by the elastic force of the plurality of second springs, so that the two cleaning brushes are tightly attached to one side of the metal plate, the two transmission plates drive the two cover plates to move away from each other during detection, the two cleaning brushes are further driven by the two fixed plates to move away from each other, and the two cleaning brushes are tightly attached to one side of the metal plate, when moving to both sides, the two cleaning brushes clean one side of the metal plate, so that the part to be detected is cleaned when using the detection device, and the accuracy of the detection result is improved. BRIEF DESCRIPTION OF DRAWINGS

[0024] Figure 1 A front view of the metal material plastic yield strength detection device is provided.

[0025] Figure 2 A side view of the metal material plastic yield strength detection device is provided.

[0026] Figure 3 A right view of the metal material plastic yield strength detection device is provided.

[0027] Figure 4 A three-dimensional structure diagram of the metal material plastic yield strength detection device without the cover plate is provided.

[0028] Figure 5 A partial three-dimensional diagram of the metal material plastic yield strength detection device is provided.

[0029] Figure 6 A sectional view of the hollow cylinder of the metal material plastic yield strength detection device is provided.

[0030] Figure 7 A sectional view of the protection box of the metal material plastic yield strength detection device is provided.

[0031] Figure 8 A sectional view of the first telescopic rod of the metal material plastic yield strength detection device is provided.

[0032] Figure 9 A metal material plastic yield strength detection device is provided. Figure 2 An enlarged view of A in the metal material plastic yield strength detection device.

[0033] Illustration: 1, support table; 2, detection table; 201, sliding groove; 202, transmission plate; 203, connecting plate; 205, electric push rod; 206, pressing plate; 207, support; 208, hydraulic rod; 209, pressing rod; 210, first connecting seat; 211, first cross rod; 212, support plate; 213, second cross rod; 214, second connecting seat; 3, protection box; 301, square plate; 302, first spring; 303, mounting plate; 304, mechanical sensor; 305, display plate; 306, hollow cylinder; 307, round plate; 308, catheter; 309, shunt; 310, first telescopic rod; 311, second telescopic rod; 312, pull plate; 313, cover plate; 314, through groove; 4, first sleeve rod; 401, second sleeve rod; 402, fixed plate; 403, cleaning brush; 404, second spring. DETAILED DESCRIPTION

[0034] In order to enable the above-mentioned objects, features and advantages of the present application to be more clearly understood, the following will further describe the present application with reference to the drawings and embodiments. It should be noted that the embodiments of the present application and the features in the embodiments can be combined with each other without conflict.

[0035] In the following description, a large number of specific details are set forth in order to facilitate a thorough understanding of the present application, but the present application can also be implemented in other ways different from those described herein, and therefore the present application is not limited to the specific embodiments disclosed in the following description.

[0036] Please refer to Figures 1 to 9 The embodiment provides a metal material plastic yield strength detection device, which comprises a support table 1, a detection table 2 arranged on one side of the support table 1 through a screw, and sliding grooves 201 formed in the inner walls of the detection table 2 on both sides, the detection table 2 can be disassembled from the support table 1 by rotating the screw, two transmission plates 202 are slidingly arranged at the inner walls of the two sliding grooves 201, a connecting plate 203 is fixedly arranged on one side of each of the two transmission plates 202, the two transmission plates 202 can slide at the inner walls of the two sliding grooves 201, and the two connecting plates 203 drive the two transmission plates 202 to move when moving; a support 207 is fixedly arranged on one side of the support table 1, a hydraulic rod 208 is installed at the center of one side of the support 207, the support 207 supports the hydraulic rod 208, and the hydraulic rod 208 is installed above the support table 1; a pressing rod 209 is fixedly arranged on the output end of the hydraulic rod 208, a first connecting seat 210 is fixedly arranged on one side of the pressing rod 209, the distance between the two transmission plates 202 can be adjusted by controlling the output end of the hydraulic rod 208 to move downward and further controlling the first connecting seat 210 to move downward through the pressing rod 209.

[0037] Please refer to Figures 1 to 9In an embodiment, the two connecting plates 203 are provided with electric push rods 205 at the center of one side, the output ends of the two electric push rods 205 are fixedly provided with pressing plates 206, the inner wall of the first connecting seat 210 is fixedly provided with two first horizontal rods 211, the outer surfaces of the two first horizontal rods 211 are movably sleeved with supporting plates 212, the two supporting plates 212 are movably embedded with second horizontal rods 213 on one side, the two ends of the two second horizontal rods 213 are fixedly provided with second connecting seats 214, the two second connecting seats 214 are fixedly arranged on the center of one side of the two connecting plates 203 respectively, the two supporting plates 212 are rotated with the two first horizontal rods 211 or the two second horizontal rods 213 as the shaft respectively, and the two transmission plates 202 can slide on the inner walls of the two sliding grooves 201. When the first connecting seat 210 moves downward, the two supporting plates 212 are pressed, the lower ends of the two supporting plates 212 further push the two second connecting seats 214 respectively, and the two connecting plates 203 further drive the two transmission plates 202 to move in opposite directions. When the first connecting seat 210 moves upward, the two supporting plates 212 are pulled, the lower ends of the two supporting plates 212 further pull the two second connecting seats 214 respectively, and the two connecting plates 203 further drive the two transmission plates 202 to move in opposite directions.

[0038] Please refer to Figures 1 to 9 In an embodiment, the detection table 2 is fixedly provided with a protection box 3 on one side, the inner walls of the two sides of the protection box 3 are fixedly provided with square plates 301, the one sides of the two square plates 301 are fixedly provided with first springs 302, and the one ends of the two first springs 302 are fixedly provided with mounting plates 303. The material yield strength of the metal plate is detected by a mechanical sensor 304. The mechanical sensor 304 is located in the interior of the protection box 3, so as to prevent the mechanical sensor 304 from being damaged by being exposed. The mounting plate 303 and the two square plates 301 press the two first springs 302, and the two first springs 302 have elastic force.

[0039] Please refer to Figures 1 to 9 In an embodiment, the inner wall of the mounting plate 303 is provided with a mechanical sensor 304, and the one side of the supporting table 1 is provided with a display plate 305. The mechanical sensor 304 is connected with the display plate 305 through a transmission line. The material yield strength of the metal plate is detected by the mechanical sensor 304. The mechanical sensor 304 contacts the metal plate to detect, and the detection result is displayed by the display plate 305 through the transmission line.

[0040] Please refer to Figures 1 to 9In one embodiment, one side of the support 207 is fixedly provided with a hollow cylinder 306, the pressing rod 209 is movably embedded in one side of the hollow cylinder 306, the inner wall of the hollow cylinder 306 is movably embedded with a circular plate 307, the circular plate 307 is fixedly sleeved on the outer surface of the hydraulic rod 208, the pressing rod 209 can slide on one side of the hollow cylinder 306, the circular plate 307 moves downward, the circular plate 307 compresses the gas below the circular plate 307 in the hollow cylinder 306, and the gas is compressed into the inside of the shunt pipe 309 through the conduit 308.

[0041] Please refer to Figures 1 to 9 In one embodiment, the outer surface of the hollow cylinder 306 is fixedly provided with the conduit 308, one end of the conduit 308 is fixedly provided with the shunt pipe 309, both ends of the shunt pipe 309 are fixedly provided with the first telescopic rod 310, and the gas is discharged into the inside of the two first telescopic rods 310 through the two ends of the shunt pipe 309.

[0042] Please refer to Figures 1 to 9 In one embodiment, the inner wall of each of the two first telescopic rods 310 is movably embedded with the second telescopic rod 311, one end of each of the two second telescopic rods 311 is fixedly arranged on one side of the mounting plate 303, and the two second telescopic rods 311 can slide on the inner wall of the two first telescopic rods 310, at this time, the two second telescopic rods 311 move upward under the pushing of the gas, and further push the mechanical sensor 304 upward through the mounting plate 303.

[0043] Please refer to Figures 1 to 9 In one embodiment, the opposite side of each of the two transmission plates 202 is fixedly provided with the pull plate 312, the opposite side of each of the two pull plates 312 is fixedly provided with the cover plate 313, the detection table 2 is provided with the through slot 314 on the side close to the two cover plates 313, the two transmission plates 202 move away from each other, the two cover plates 313 are driven to move relative to each other through the two pull plates 312, the through slot 314 is exposed, and the mechanical sensor 304 can be stretched out.

[0044] Please refer to Figures 1 to 9 In one embodiment, one side of each of the two cover plates 313 is fixedly provided with the first sleeve rod 4, the inner wall of each of the plurality of first sleeve rods 4 is movably embedded with the second sleeve rod 401, the outer surface of each of the plurality of second sleeve rods 401 is movably sleeved with the second spring 404, the plurality of second sleeve rods 401 can slide in the inner wall of the plurality of first sleeve rods 4, and the plurality of second springs 404 have elasticity. During detection, the metal plate is above the two fixed plates 402, the two fixed plates 402 are pushed by the elasticity of the plurality of second springs 404, and the two cleaning brushes 403 are tightly attached to one side of the metal plate.

[0045] Please refer to Figures 1 to 9In one embodiment, the plurality of second sleeves 401 are two by two in a group, one end of the two groups of second sleeves 401 is fixedly provided with a fixed plate 402, one side of the two fixed plates 402 is fixedly provided with a cleaning brush 403, and the two cleaning brushes 403 are tightly attached to one side of the metal plate and move to both sides, and the two cleaning brushes 403 moving to both sides clean the detection area of the metal plate.

[0046] Working principle: when the strength of the metal plate is detected, the two supporting plates 212 rotate around the two first horizontal rods 211 or the two second horizontal rods 213 respectively, and at the same time, the two transmission plates 202 can slide on the inner walls of the two sliding grooves 201. When the first connecting seat 210 moves downward, it will press the two supporting plates 212, and further push the lower ends of the two supporting plates 212 to move the two second connecting seats 214, and further make the two connecting plates 203 drive the two transmission plates 202 to move in opposite directions. When the first connecting seat 210 moves upward, it will pull the two supporting plates 212, and further pull the lower ends of the two supporting plates 212 to move the two second connecting seats 214, and further make the two connecting plates 203 drive the two transmission plates 202 to move in opposite directions. By controlling the output end of the hydraulic rod 208 to move downward, the first connecting seat 210 is driven to move downward by the pressing rod 209, the distance between the two transmission plates 202 can be adjusted, and the two sides of the metal plate to be detected are placed under the lower position of the two pressing plates 206. The output end of the two electric push rods 205 is controlled to move downward, so that the two pressing plates 206 are pressed on the metal plate, and the output end of the hydraulic rod 208 is controlled to move downward, so that the two connecting plates 203 move in opposite directions, and the two pressing plates 206 pull the two sides of the metal plate, so that the two sides of the metal plate are pulled during detection, and the stress distribution of the metal plate under actual working conditions can be simulated, and the yield strength and plastic properties of the metal material can be more truly tested;

[0047] When the detection device is used, the material yield strength of the metal plate is detected by the mechanical sensor 304, the mechanical sensor 304 is in the inside of the protection box 3, and the mechanical sensor 304 is prevented from being damaged by being exposed to the outside, when the detection is performed, the pressure rod 209 moves downward, further drives the circular plate 307 to move downward, the circular plate 307 compresses the gas below the circular plate 307 in the inside of the hollow cylinder 306, the gas is compressed into the inside of the shunt pipe 309 through the conduit 308, and the gas is further discharged into the inside of the two first telescopic rods 310 through the two ends of the shunt pipe 309, the two second telescopic rods 311 can slide at the inner walls of the two first telescopic rods 310 respectively, at this time, the two second telescopic rods 311 move upward under the pushing of the gas, further push the mechanical sensor 304 upward through the mounting plate 303, and the mounting plate 303 and the two square plates 301 squeeze the two first springs 302, the two first springs 302 have elastic force, when the detection is performed, the two transmission plates 202 move away from each other, further drive the two cover plates 313 to move relative to each other through the two pull plates 312, so that the through slot 314 is exposed, at this time, the upward moving mechanical sensor 304 contacts the metal plate for detection, the detection result is displayed through the display plate 305 through the transmission line, after the detection is completed, the two first telescopic rods 310 are not squeezed by the gas, the elastic force of the two first springs 302 pushes the mounting plate 303, further makes the two second telescopic rods 311 return to the inside of the two first telescopic rods 310, and the mechanical sensor 304 is recovered to the inside of the protection box 3, and the two cover plates 313 move away from each other to block the through slot 314, so that the mechanical sensor 304 is protected when the detection is not performed, and the mechanical sensor 304 is prevented from being damaged by being exposed to the outside, and the accuracy of the detection result is affected;

[0048] When the detection is performed, the plurality of second sleeve rods 401 can slide at the inner walls of the plurality of first sleeve rods 4 respectively, the plurality of second springs 404 have elastic force, the metal plate is above the two fixed plates 402 when the detection is performed, the two fixed plates 402 are pushed by the elastic force of the plurality of second springs 404, so that the two cleaning brushes 403 are tightly attached to one side of the metal plate, the two transmission plates 202 drive the two cover plates 313 to move away from each other when the detection is performed, further drive the two cleaning brushes 403 to move away from each other through the two fixed plates 402, the two cleaning brushes 403 are tightly attached to one side of the metal plate, and the two cleaning brushes 403 clean one side of the metal plate when moving to both sides, so that the part to be detected is cleaned when the detection device is used, and the accuracy of the detection result is improved.

[0049] The above merely describes the preferred embodiments of the present application, but is not intended to limit the present application in other forms. Any person skilled in the art can make changes or modifications to the above disclosed technical contents into equivalent embodiments with equivalent changes, and apply them to other fields. However, any simple modification, equivalent change and modification made to the above embodiments according to the technical essence of the present application, without departing from the technical solution of the present application, still falls within the protection scope of the present application.

Claims

1. A device for testing the plastic yield strength of metallic materials, characterized in that, The device comprises: A support table (1); A detection table (2) is arranged on one side of the support table (1) through a screw, and two sides of the inner wall of the detection table (2) are provided with sliding grooves (201); Two transmission plates (202) are slidingly arranged on the inner walls of the two sliding grooves (201), and one side of each of the two transmission plates (202) is fixedly provided with a connecting plate (203); A support (207) is fixedly arranged on one side of the support table (1), and a hydraulic rod (208) is installed at the center of one side of the support (207); A pressing rod (209) is fixedly arranged on the output end of the hydraulic rod (208), and a first connecting seat (210) is fixedly arranged on one side of the pressing rod (209); One side of the detection table (2) is fixedly provided with a protection box (3), the inner walls of the two sides of the protection box (3) are fixedly provided with square plates (301), one side of each of the two square plates (301) is fixedly provided with a first spring (302), and one end of each of the two first springs (302) is fixedly provided with a mounting plate (303); A mechanical sensor (304) is installed on the inner wall of the mounting plate (303), one side of the support table (1) is provided with a display panel (305), and the mechanical sensor (304) is connected with the display panel (305) through a transmission line; One side of the support (207) is fixedly provided with a hollow cylinder (306), the pressing rod (209) is movably embedded on one side of the hollow cylinder (306), a circular plate (307) is movably embedded on the inner wall of the hollow cylinder (306), and the circular plate (307) is fixedly sleeved on the outer surface of the hydraulic rod (208); A catheter (308) is fixedly arranged on the outer surface of the hollow cylinder (306), one end of the catheter (308) is fixedly provided with a shunt (309), and the two ends of the shunt (309) are fixedly provided with first telescopic rods (310); Second telescopic rods (311) are movably embedded on the inner walls of the two first telescopic rods (310), and one end of each of the two second telescopic rods (311) is fixedly arranged on one side of the mounting plate (303).

2. The device for detecting plastic yield strength of a metal material according to claim 1, characterized by: Electric push rods (205) are installed at the centers of one side of the two connecting plates (203), pressing plates (206) are fixedly arranged on the output ends of the two electric push rods (205), first cross rods (211) are fixedly arranged on the inner walls of the first connecting seats (210), support plates (212) are movably sleeved on the outer surfaces of the two first cross rods (211), second cross rods (213) are movably embedded on one side of each of the two support plates (212), second connecting seats (214) are fixedly arranged on the two ends of each of the two second cross rods (213), and one side of each of the two second connecting seats (214) is fixedly arranged at the center of one side of each of the two connecting plates (203).

3. The device for detecting plastic yield strength of a metal material according to claim 1, characterized in that: Two opposite sides of each of the transmission plates (202) are fixedly provided with pull plates (312), and two opposite sides of each of the pull plates (312) are fixedly provided with cover plates (313). The detection table (2) is provided with a through slot (314) on one side close to the two cover plates (313).

4. The device for detecting plastic yield strength of a metal material according to claim 3, characterized in that: One side of each of the two cover plates (313) is fixedly provided with two first sleeve rods (4), and the inner walls of the plurality of first sleeve rods (4) are movably embedded with second sleeve rods (401). The outer surfaces of the plurality of second sleeve rods (401) are movably sleeved with second springs (404).

5. The apparatus for detecting plastic yield strength of a metal material according to claim 4, characterized in that: The plurality of second sleeve rods (401) are in pairs in a group, one end of the two groups of second sleeve rods (401) is fixedly provided with a fixed plate (402), and one side of the two fixed plates (402) is fixedly provided with a cleaning brush (403).

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