A device for measuring the strength of a car body panel

Abstract

The application discloses a kind of strength measuring devices of carriage steel plate, it is related to strength measurement technical field, including pedestal, pedestal is equipped with two groups of tensile components with center line symmetry.There are tensile components, including the tensile box of sliding on pedestal, the top of tensile box is equipped with pull plate, and there are strip holes and stepped stopper for positioning test plate on pull plate, and the lower surface of pull plate is equipped with sliding seat, slide bar and lock plate for clamping test plate.Tensile box bottom plate is equipped with hydraulic press, and the end of telescopic shaft of hydraulic press is equipped with pressing plate.Pedestal is equipped with hardness testing machine between two tensile components, and the measurement of the hardness of test plate is realized by the structure of multiple drive plate, lower triangular block and upper triangular block.In addition, the device also includes cleaning plate, for cleaning the surface of test plate, to improve the accuracy of measurement.The application can measure the tensile strength and hardness of carriage steel plate simultaneously, and can measure multiple positions of steel plate, obtain average value, obtain more accurate measurement result.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of strength measurement, more particularly, it relates to a strength measurement device for carriage steel plate. BACKGROUND

[0002] In the production and quality control process of carriage steel plate, strength measurement is a crucial link. The strength of carriage steel plate, including tensile strength and hardness, directly affects the structural safety and service life of the carriage.

[0003] In the prior art, the axis direction of the test sample plate is inconsistent with the axis direction of the tensile strength testing machine, which can cause measurement error. At the same time, the traditional strength measurement device is often single-functioned, and can only measure one kind of strength index, which cannot meet the measurement requirements of tensile strength and hardness at the same time. In addition, in the measurement process of the traditional device, only a single position of the steel plate can be measured, and the overall strength performance of the steel plate cannot be fully reflected. Therefore, it has important practical significance to develop a device which can measure the tensile strength and hardness of the carriage steel plate at the same time, and can measure multiple positions of the steel plate. SUMMARY

[0004] In view of the deficiencies in the prior art, the purpose of the present application is to provide a strength measurement device for carriage steel plate.

[0005] To solve the above technical problems, the present application is realized by the following technical scheme: a kind of strength measuring device of carriage steel plate, including pedestal, it is characterized in that, pedestal is equipped with two groups of tensile components with center line symmetry, tensile component includes the pull box of sliding on the pedestal, the top of pull box is equipped with pull plate, pedestal is equipped with tensile strength testing machine for pulling pull box;The pull plate is equipped with strip hole one and strip hole two, the step block for positioning test plate is equipped at the strip hole one of pull plate, the lower surface of pull plate is equipped with sliding seat, sliding seat is slidably equipped with slide rod, the end of slide rod is equipped with the lock plate for clamping test plate, lock plate extends from strip hole two to the upper surface of pull plate, spring one is sleeved on the outside of slide rod, the two ends of spring one are connected with sliding seat and lock plate respectively, the bottom plate of pull box is equipped with hydraulic press, the end of telescopic shaft of hydraulic press is equipped with pressing plate, the let hole for inserting lock plate is equipped in pressing plate, telescopic cylinder is equipped between pressing plate and pull box;The hardness testing machine is equipped in the middle of two tensile components on the pedestal, the drop plate is equipped in hardness testing machine, the end of drop plate is equipped with hardness testing head for measuring hardness, and the lower surface of drop plate is equipped with multiple drive plate, the lower end of multiple drive plate is equipped with inclined plate one and vertical plate one, the lower triangular block is slidably equipped above the pedestal, the semicircular surface that cooperates with inclined plate one and vertical plate one is equipped in lower triangular block, guide rod seat is equipped on the both sides of lower triangular block on the pedestal, and forms sliding cooperation with lower triangular block, spring two is sleeved on the outside of guide rod seat, the two ends of spring two are connected with the end plate of guide rod seat and lower triangular block respectively, the upper triangular block for lifting test plate is slidably equipped on the inclined surface of lower triangular block, vertical guide rod that forms sliding cooperation with upper triangular block is equipped on the both sides of upper triangular block on the pedestal.

[0006] As a preferred technical scheme of the present application, the top of the lock plate is equipped with a hooking table for hooking the test plate.

[0007] As a preferred technical scheme of the present application, the side of the lock plate is equipped with a pull rod, which extends to the outside of the pull box, and the end of the pull rod outside the pull box is equipped with a pull disc.

[0008] As a preferred technical scheme of the present application, the step block is sequentially equipped with a first stop surface, a second stop surface and a third stop surface for positioning the test plate, and the lower surface of the pull plate is equipped with two light rods that form sliding cooperation with the step block.

[0009] As a preferred technical scheme of the present application, the top of the first stop surface and the second stop surface is equipped with a triangular table for limiting the test plate.

[0010] As a preferred technical scheme of the present application, the vertical plate one of the multiple drive plate is sequentially connected with a middle flat plate, an inclined plate two and a vertical plate two, and the vertical plate two is fixedly arranged on the lower surface of the drop plate.

[0011] As a preferred technical scheme of the present application, two sliding frames are arranged on the base, guide shafts are arranged on the sliding frames in the horizontal direction, springs four are arranged outside the guide shafts, two ends of the springs four are connected with the sliding frames and the end portions of the guide shafts respectively, a cleaning plate for cleaning the test plate is connected with the two guide shafts, a connecting frame is arranged on the side wall of the cleaning plate, and a driven arc plate in contact with the inclined plate two is arranged on the connecting frame.

[0012] As a preferred technical scheme of the present application, a middle hole for inserting the hardness testing head is arranged in the middle portion of the connecting frame.

[0013] Compared with the prior art, the present application has the following beneficial effects:

[0014] (1) The present application can simultaneously measure the tensile strength and hardness of the steel plate in the carriage, meets the diversified measurement requirements, and improves the measurement efficiency; the lock plate and the stepped block position the test plate, that is, ensure that the axial direction of the test plate is consistent with the pulling direction of the tensile strength testing machine, and ensure the accuracy of measuring the tensile strength.

[0015] (2) The present application can measure multiple positions of the test plate through the design of the stepped block, so as to obtain the average value and obtain a more accurate hardness value, and comprehensively reflect the overall strength performance of the steel plate; when measuring the hardness, the upper surface of the upper triangular block is in contact with the lower surface of the test plate, which prepares for measuring the hardness of the test plate and avoids bending the test plate when measuring the hardness, so as to affect the measured hardness value.

[0016] (3) The present application is provided with a cleaning plate, which can automatically clean the surface of the test plate before hardness measurement, effectively removes surface dirt and impurities, and improves the accuracy of hardness measurement.

[0017] (4) The present application realizes the simplification and intelligentization of the measurement process through the automatic control of the tensile strength testing machine and the hardness testing machine, reduces the operation difficulty and labor intensity. BRIEF DESCRIPTION OF DRAWINGS

[0018] Figure 1 It is a structural schematic view of the whole front surface of the present application.

[0019] Figure 2 It is a structural schematic view of the whole back surface of the present application.

[0020] Figure 3 It is a structural schematic view of the installation of the pressing plate of the present application.

[0021] Figure 4 It is a structural schematic view of the pulling plate of the present application.

[0022] Figure 5 It is a structural schematic view of the installation of the lock plate of the present application.

[0023] Figure 6 Structure diagram of the installation of the pull plate of the present application.

[0024] Figure 7 Structure diagram of the installation of the pull plate of the present application.

[0025] Figure 8 Structure diagram of the installation of the pull plate of the present application.

[0026] Figure 9 Structure diagram of the installation of the pull plate of the present application.

[0027] Figure 10 Structure diagram of the installation of the pull plate of the present application.

[0028] Figure 11 Structure diagram of the installation of the pull plate of the present application.

[0029] Figure 12 Structure diagram of the installation of the pull plate of the present application.

[0030] Figure 13 Structure diagram of the installation of the pull plate of the present application.

[0031] Reference numerals: 1 - base; 2 - pull box; 3 - pull plate; 301 - hole one; 302 - hole two; 4 - tensile strength tester; 5 - step stopper; 501 - stop surface one; 502 - stop surface two; 503 - stop surface three; 504 - triangular table; 6 - test plate; 7 - sliding seat; 8 - sliding rod; 9 - lock plate; 901 - hook table; 10 - spring one; 11 - hydraulic machine; 12 - press plate; 1201 - let go hole; 13 - telescopic cylinder; 14 - hardness tester; 15 - drop plate; 16 - hardness test head; 17 - multi-drive plate; 1701 - inclined plate one; 1702 - vertical plate one; 1703 - middle flat plate; 1704 - inclined plate two; 1705 - vertical plate two; 18 - lower triangular block; 1801 - semicircular surface; 19 - guide rod seat; 20 - spring two; 21 - upper triangular block; 22 - vertical guide rod; 23 - pull rod; 24 - pull plate; 25 - light rod; 26 - spring three; 27 - sliding frame; 28 - guide shaft; 29 - spring four; 30 - cleaning plate; 31 - connecting frame; 3101 - middle hole; 32 - driven arc plate. DETAILED DESCRIPTION

[0032] In the present application, the directions such as "up, down" are generally directed to the directions shown in the drawings, or the vertical, perpendicular or gravity directions, unless otherwise specified; similarly, for the convenience of understanding and description, "left, right" are generally directed to the left and right shown in the drawings, and "inner, outer" are directed to the inner and outer relative to the contour of each component, but the above directional words are not used to limit the present application.

[0033] Embodiment: Please refer toFigures 1 to 13 The application provides the following technical scheme in the structural schematic view: a strength measuring device for a carriage steel plate, which comprises a base 1, the base 1 is provided with two groups of stretching assemblies in a center line symmetry, the stretching assembly comprises a pulling box 2 slidingly arranged on the base 1, the top of the pulling box 2 is provided with a pulling plate 3, and the base 1 is provided with a tensile strength testing machine 4 for pulling the pulling box 2.

[0034] The pulling plate 3 is provided with a strip hole one 301 and a strip hole two 302, the pulling plate 3 is provided with a stepped block 5 for positioning a test plate 6 at the strip hole one 301, the lower surface of the pulling plate 3 is provided with a sliding seat 7, the sliding seat 7 is slidingly provided with a sliding rod 8, the end of the sliding rod 8 is provided with a locking plate 9 for clamping the test plate 6, the locking plate 9 extends from the strip hole two 302 to the upper surface of the pulling plate 3, the outer portion of the sliding rod 8 is provided with a spring one 10, the two ends of the spring one 10 are connected with the sliding seat 7 and the locking plate 9 respectively, the bottom plate of the pulling box 2 is provided with a hydraulic machine 11, the end of the telescopic shaft of the hydraulic machine 11 is provided with a pressing plate 12, the pressing plate 12 is provided with a gap hole 1201 for inserting the locking plate 9, and the telescopic cylinder 13 is arranged between the pressing plate 12 and the pulling box 2. The carriage steel plate is made into the test plate 6 with a standard size, and the two ends of the test plate 6 are respectively placed in the two groups of stretching assemblies.

[0035] Specifically, the end of the test plate 6 is placed above the pulling plate 3 of the stretching assembly, the inner side of the test plate 6 abuts against the stepped block 5, and the outer side of the test plate 6 abuts against the locking plate 9, the spring one 10 provides elastic force, so that the locking plate 9 and the stepped block 5 position and clamp the test plate 6, that is, the axial direction of the test plate 6 is consistent with the pulling direction of the tensile strength testing machine 4, and the accuracy of the tensile strength is ensured. The telescopic shaft of the hydraulic machine 11 is retracted, so that the pressing plate 12 is lowered, and the two ends of the test plate 6 are clamped by the pressing plates 12 of the two stretching assemblies, in this process, the locking plate 9 is inserted into the gap hole 1201, so that the locking plate 9 and the pressing plate 12 are prevented from interfering. At the same time, the tensile strength testing machines 4 of the two stretching assemblies are started, so that the tensile strength of the test plate 6 can be tested.

[0036] The base 1 is provided with a hardness tester 14 between the two stretching assemblies, the hardness tester 14 is provided with a descending plate 15, the end of the descending plate 15 is provided with a hardness testing head 16 for measuring hardness, and the lower surface of the descending plate 15 is provided with a multi-drive plate 17, the lower end of the multi-drive plate 17 is provided with an inclined plate one 1701 and a vertical plate one 1702, the upper surface of the base 1 is slidably provided with a lower triangular block 18, the lower triangular block 18 is provided with a semicircular surface 1801 matched with the inclined plate one 1701 and the vertical plate one 1702, and the base 1 is provided with a guide rod seat 19 matched with the lower triangular block 18 on both sides of the lower triangular block 18, the guide rod seat 19 is externally sleeved with a spring two 20, the two ends of the spring two 20 are respectively connected with the lower triangular block 18 and the end plate of the guide rod seat 19, and the inclined surface of the lower triangular block 18 is slidably provided with an upper triangular block 21 for lifting the test plate 6, and the base 1 is provided with a vertical guide rod 22 matched with the upper triangular block 21 on both sides of the upper triangular block 21.

[0037] Specifically, the hardness tester 14 is started, the hardness tester 14 drives the descending plate 15 to descend, the descending plate 15 drives the multi-drive plate 17 to synchronously descend, the inclined plate one 1701 of the multi-drive plate 17 drives the lower triangular block 18 to move away from the multi-drive plate 17 along the guide rod seat 19, the spring two 20 is compressed, the inclined surface of the lower triangular block 18 slides with the inclined surface of the upper triangular block 21, and the upper triangular block 21 is driven to move upward along the vertical guide rod 22, so that the upper surface of the upper triangular block 21 is in contact with the lower surface of the test plate 6, and preparation is made for measuring the hardness of the test plate 6. As the descending plate 15 continues to descend, the semicircular surface 1801 on the lower triangular block 18 transitions from the inclined plate one 1701 to the vertical plate one 1702, the lower triangular block 18 no longer rises, and then the descending plate 15 moves downward with the hardness testing head 16, the hardness testing head 16 is in contact with the upper surface of the test plate 6, and the hardness testing head 16 measures the hardness of the test plate 6.

[0038] The top of the lock plate 9 is provided with a hook table 901 for hooking the test plate 6. Specifically, the hook table 901 limits the test plate 6, so that when the lock plate 9 and the stepped block 5 clamp the test plate 6, the lock plate 9 is not lifted, thereby affecting the measurement of the hardness strength.

[0039] The side surface of the lock plate 9 is provided with a pull rod 23 extending to the outside of the pull box 2, and the end of the pull rod 23 outside the pull box 2 is provided with a pull plate 24. Specifically, when the lock plate 9 is used to clamp the test plate 6, the pull plate 24 is manually pulled, the power is transmitted through the pull rod 23, the lock plate 9 and the sliding rod 8 move away from the stepped block 5 along the sliding seat 7, and the test plate 6 is conveniently placed between the stepped block 5 and the lock plate 9.

[0040] The stepped block 5 is sequentially provided with a first stop surface 501, a second stop surface 502 and a third stop surface 503 for positioning the test plate 6, and the lower surface of the pull plate 3 is provided with two light rods 25 which are in sliding fit with the stepped block 5, and the outer part of the light rod 25 is provided with a third spring 26, and the two ends of the third spring 26 are connected with the stepped block 5 and the lower end of the light rod 25 respectively.

[0041] Specifically, in the original state, the third spring 26 provides elastic force to make the stepped block 5 in the upper position, the inner side of the test plate 6 is in contact with the first stop surface 501 of the stepped block 5, the telescopic shaft of the hydraulic machine 11 drives the pressing plate 12 to descend, the pressing plate 12 is in contact with the top surface of the stepped block 5, then the pressing plate 12 drives the stepped block 5 to descend along the light rod 25, and the third spring 26 is compressed, when the first stop surface 501 of the stepped block 5 is separated from the test plate 6, the first stop surface 501 is no longer in contact with the test plate 6, the first spring 10 provides pulling force to make the lock plate 9 drive the inner side of the test plate 6 to be in contact with the second stop surface 502, so as to change the position for hardness measurement. With the continuous descent of the pressing plate 12, the second stop surface 502 is separated from the test plate 6, and the lock plate 9 drives the inner side of the test plate 6 to be in contact with the third stop surface 503 according to the same principle as above. Therefore, in the descending process of the pressing plate 12, the inner side of the test plate 6 is in contact with the first stop surface 501, the second stop surface 502 and the third stop surface 503 respectively, so that the position of the test plate 6 located directly below the hardness testing head 16 has three positions, and therefore the hardness of three different positions of the test plate 6 can be measured to obtain an average value, so as to obtain a more accurate hardness value.

[0042] The top part of the first stop surface 501 and the second stop surface 502 is provided with a triangular platform 504 for limiting the test plate 6. Specifically, when the inner side of the test plate 6 is in contact with the first stop surface 501 or the second stop surface 502, the triangular platform 504 hooks the test plate 6 to avoid the test plate 6 from being bounced up, so that the test plate 6 is in close contact with the upper surface of the pull plate 3, which is beneficial to the accuracy of hardness measurement. When the triangular platform 504 is in contact with the test plate 6 in the descending process of the stepped block 5, the triangular platform 504 drives the test plate 6 and the lock plate 9 to move to the outside of the pull plate 3 at the same time, so that the test plate 6 smoothly passes through the triangular platform 504. When the third stop surface 503 is in contact with the inner side of the test plate 6, the pressing plate 12 clamps the test plate 6 on the pull plate 3, and the test plate 6 is also prevented from being bounced up during the hardness measurement.

[0043] The vertical plate one 1702 of the multi-drive plate 17 is sequentially connected with a middle flat plate 1703, an inclined plate two 1704 and a vertical plate two 1705, and the vertical plate two 1705 is fixedly arranged on the lower surface of the descending plate 15.

[0044] The base 1 is provided with two sliding frames 27, the sliding frames 27 are provided with guide shafts 28 in the horizontal direction, the guide shafts 28 are externally provided with spring fours 29, the two ends of the spring fours 29 are respectively connected with the sliding frames 27 and the end portions of the guide shafts 28, the two guide shafts 28 are commonly connected with a cleaning plate 30 for cleaning the test plate 6, the side wall of the cleaning plate 30 is provided with a connecting frame 31, the connecting frame 31 is provided with a driven arc plate 32 in contact with the inclined plate two 1704.

[0045] The middle portion of the connecting frame 31 is provided with a middle hole 3101 for inserting the hardness test head 16.

[0046] Specifically, when the drop plate 15 and the multi-driven plate 17 move downward, the inclined plate two 1704 on the multi-driven plate 17 drives the driven arc plate 32 to move along the sliding frame 27 in the direction of the test plate 6 with the connecting frame 31, the cleaning plate 30 and the guide shaft 28, the spring four 29 is compressed, the cleaning plate 30 passes through the position to be tested on the upper surface of the test plate 6, and the upper surface of the test plate 6 is cleaned, so that the accuracy of the hardness measurement of the test plate 6 is improved. With the continuous descent of the drop plate 15 and the multi-driven plate 17, the middle hole 3101 of the connecting frame 31 is located directly below the hardness test head 16 when the hardness test head 16 contacts the test plate 6.

[0047] Working principle: in the original state, the telescopic shaft of the hydraulic machine 11 is in the elongated state, the pressing plate 12 is in the upper position, the spring three 26 provides elastic force to make the stepped block 5 in the upper position. The pull plates 24 of the two groups of stretching assemblies are pulled in turn, the power is transmitted through the pull rods 23, the lock plate 9 and the sliding rod 8 move along the sliding seat 7 away from the stepped block 5, the end portion of the test plate 6 is placed on the upper surface of the pull plate 3, and the end portion of the test plate 6 is placed between the stepped block 5 and the lock plate 9, the pull plate 24 is released, the spring one 10 provides elastic force to drive the lock plate 9 to move in the direction of the stepped block 5, the lock plate 9 drives the inner side of the test plate 6 to abut against the abutting surface one 501 of the stepped block 5, that is, the lock plate 9 and the abutting surface one 501 of the stepped block 5 clamp and position the test plate 6. The hook table 901 on the lock plate 9 limits the test plate 6, the triangular table 504 on the upper portion of the abutting surface one 501 hooks and limits the test plate 6, so that the test plate 6 is in close contact with the upper surface of the pull plate 3, which is conducive to the accuracy of the hardness measurement.

[0048] The hardness tester 14 is started, the hardness tester 14 drives the descending plate 15 to descend, the descending plate 15 drives the multi-drive plate 17 to descend synchronously, the inclined plate one 1701 of the multi-drive plate 17 drives the lower triangular block 18 to move along the guide rod seat 19 to the direction away from the multi-drive plate 17, the spring two 20 is compressed, the inclined surface between the lower triangular block 18 and the upper triangular block 21 slides, the upper triangular block 21 is driven to move upward along the vertical guide rod 22, the upper surface of the upper triangular block 21 is in contact with the lower surface of the test plate 6, the hardness of the test plate 6 is prepared to be measured, the test plate 6 is prevented from being bent when the hardness is measured, so as to affect the measured hardness value. With the continuous descent of the descending plate 15, the semicircular surface 1801 on the lower triangular block 18 is transferred from the inclined plate one 1701 to the vertical plate one 1702, the lower triangular block 18 is no longer raised. In this process, the inclined plate two 1704 on the multi-drive plate 17 drives the driven arc plate 32 to move along the sliding frame 27 to the direction of the test plate 6 with the connecting frame 31, the cleaning plate 30 and the guide shaft 28, the spring four 29 is compressed, the cleaning plate 30 passes through the position of the upper surface of the test plate 6 to be measured, and the upper surface of the test plate 6 is cleaned, so as to improve the accuracy of the hardness measurement of the test plate 6. Subsequently, the descending plate 15 drives the hardness testing head 16 to move downward, the middle hole 3101 of the connecting frame 31 is located directly below the hardness testing head 16, and the hardness testing head 16 passes through the middle hole 3101 to measure the hardness of the test plate 6.

[0049] After the hardness measurement of the first position on the test plate 6 is completed, the hardness tester 14 is restored to the original state, the hydraulic machine 11 is started, the telescopic shaft of the hydraulic machine 11 is retracted, the pressing plate 12 is driven to descend, the pressing plate 12 contacts the top surface of the stepped block 5, the pressing plate 12 drives the stepped block 5 to descend along the light pole 25, the spring 26 is compressed, when the blocking surface one 501 of the stepped block 5 is separated from the test plate 6, the blocking surface one 501 is no longer in contact with the test plate 6, the spring one 10 provides a pulling force, the locking plate 9 drives the inner side of the test plate 6 to contact the blocking surface two 502, so as to change the position of the hardness measurement, the hook table 901 on the locking plate 9 and the triangular table 504 on the upper part of the blocking surface two 502 also clamp the test plate 6 on the pulling plate 3, the hydraulic machine 11 is paused, the hardness tester 14 is started again to measure the hardness of the second position on the test plate 6. The hydraulic machine 11 is started again, the pressing plate 12 is continuously lowered, the blocking surface two 502 is separated from the test plate 6, and the locking plate 9 drives the inner side of the test plate 6 to contact the blocking surface three 503 according to the same principle as described above, the hydraulic machine 11 drives the pressing plate 12 to directly descend to clamp the test plate 6 on the pulling plate 3, and the hardness of the third position on the test plate 6 is measured. Therefore, the inner side of the test plate 6 contacts the blocking surface one 501, the blocking surface two 502 and the blocking surface three 503 during the descending process of the pressing plate 12, so that there are three positions of the test plate 6 located below the hardness testing head 16, and the hardness of the three different positions of the test plate 6 can be measured to obtain a more accurate hardness value. During the descending process of the stepped block 5, when the triangular table 504 contacts the test plate 6, the triangular table 504 drives the test plate 6 and the locking plate 9 to move to the outside of the pulling plate 3 at the same time, so that the test plate 6 can smoothly pass through the triangular table 504.

[0050] After the hardness measurement of the test plate 6 is completed, the pressing plate 12 clamps the test plate 6 on the pulling plate 3, the locking plate 9 is inserted into the accommodation hole 1201 to avoid interference between the locking plate 9 and the pressing plate 12, the inner sides of the two ends of the test plate 6 contact the blocking surface three 503 of the two groups of tensile assembly stepped blocks 5 respectively, so that the axis direction of the test plate 6 is consistent with the pulling direction of the tensile strength tester 4, and the accuracy of the tensile strength is ensured. The tensile strength tester 4 of the two tensile assemblies is started at the same time, so that the tensile strength of the test plate 6 can be tested.

[0051] The above is only a specific embodiment of the present application, but the technical features of the present application are not limited to this. Any simple change, equivalent replacement or modification made on the basis of the present application to solve the basically same technical problem and realize the basically same technical effect is also covered in the protection scope of the present application.

Claims

1. A device for measuring the strength of a bodywork panel, comprising a base (1), characterized in that, The base (1) is provided with two groups of stretching assemblies symmetrically with respect to the center line, the stretching assembly comprises a pull box (2) slidingly arranged on the base (1), the top of the pull box (2) is provided with a pull plate (3), and the base (1) is provided with a tensile strength testing machine (4) for pulling the pull box (2); the pull plate (3) is provided with a strip hole one (301) and a strip hole two (302), the pull plate (3) is provided with a stepped block (5) for positioning the test plate (6) at the strip hole one (301), the lower surface of the pull plate (3) is provided with a sliding seat (7), the sliding seat (7) is slidingly provided with a sliding rod (8), the end of the sliding rod (8) is provided with a locking plate (9) for clamping the test plate (6), the locking plate (9) extends from the strip hole two (302) to the upper surface of the pull plate (3), the outer portion of the sliding rod (8) is provided with a spring one (10), the two ends of the spring one (10) are connected with the sliding seat (7) and the locking plate (9) respectively, the bottom plate of the pull box (2) is provided with a hydraulic machine (11), the end of the telescopic shaft of the hydraulic machine (11) is provided with a pressing plate (12), the pressing plate (12) is provided with a gap hole (1201) for inserting the locking plate (9), and the pressing plate (12) and the pull box (2) are provided with a telescopic cylinder (13); The base (1) is provided with a hardness testing machine (14) between the two stretching assemblies, the hardness testing machine (14) is provided with a descending plate (15), the end of the descending plate (15) is provided with a hardness testing head (16) for measuring hardness, and the lower surface of the descending plate (15) is provided with a multi-drive plate (17), the lower end of the multi-drive plate (17) is provided with an inclined plate one (1701) and a vertical plate one (1702), the upper portion of the base (1) is slidingly provided with a lower triangular block (18), the lower triangular block (18) is provided with a semicircular surface (1801) matched with the inclined plate one (1701) and the vertical plate one (1702), the base (1) is provided with a guide rod seat (19) on both sides of the lower triangular block (18), the guide rod seat (19) is provided with a spring two (20) outside, the two ends of the spring two (20) are connected with the lower triangular block (18) and the end plate of the guide rod seat (19) respectively, the inclined surface of the lower triangular block (18) is slidingly provided with an upper triangular block (21) for lifting the test plate (6), and the base (1) is provided with a vertical guide rod (22) on both sides of the upper triangular block (21) and matched with the upper triangular block (21).

2. A device for measuring the strength of a car body steel panel according to claim 1, characterized in that: The top of the locking plate (9) is provided with a hook table (901) for hooking the test plate (6).

3. The strength measuring device for a railcar panel of claim 1 wherein: The side of the locking plate (9) is provided with a pull rod (23), the pull rod (23) extends to the outside of the pull box (2), and the end of the pull rod (23) outside the pull box (2) is provided with a pull disc (24).

4. The strength measuring device for a railcar panel of claim 1 wherein: The stepped block (5) is sequentially provided with a blocking surface one (501), a blocking surface two (502) and a blocking surface three (503) for positioning the test plate (6), the lower surface of the pull plate (3) is provided with two light rods (25) matched with the stepped block (5) in sliding mode, the outer portion of the light rod (25) is provided with a spring three (26), and the two ends of the spring three (26) are connected with the stepped block (5) and the lower end of the light rod (25) respectively.

5. A device for measuring the strength of a carriage steel plate according to claim 4, characterized in that: The top of the first stop surface (501) and the second stop surface (502) is provided with a triangular table (504) for limiting the test plate (6).

6. The strength measuring device of a railcar steel panel according to claim 1, wherein: The vertical plate one (1702) of the multi-drive plate (17) is sequentially connected with a middle flat plate (1703), an inclined plate two (1704) and a vertical plate two (1705), and the vertical plate two (1705) is fixedly arranged on the lower surface of the descending plate (15).

7. A device for measuring the strength of a carriage steel plate according to claim 6, characterized in that: The base (1) is provided with two sliding frames (27), the sliding frames (27) are provided with guide shafts (28) in the horizontal direction, the guide shafts (28) are externally provided with spring fours (29), the two ends of the spring fours (29) are respectively connected with the sliding frames (27) and the end portions of the guide shafts (28), the two guide shafts (28) are commonly connected with a cleaning plate (30) for cleaning the test plate (6), the sidewall of the cleaning plate (30) is provided with a connecting frame (31), and the connecting frame (31) is provided with a driven arc plate (32) in contact with the inclined plate two (1704).

8. A device for measuring the strength of a carriage steel plate according to claim 7, characterized in that: The middle portion of the connecting frame (31) is provided with a middle hole (3101) for inserting the hardness testing head (16).

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