A plate tension-torsion shear testing device

Abstract

The application discloses a kind of plate member tension-torsion shear test devices, including plate member, the upper and lower of the plate member is equipped with shear test unit respectively, the left side and the right side of the plate member are equipped with clamp unit respectively, two The left side edge and the right side edge of the plate member can be clamped respectively by two clamp units, two The left side edge and the right side edge of the plate member can be rotated in the same direction or opposite direction by two clamp units, two The plate member can be simultaneously pulled to left side and right side by two clamp units.The beneficial effects of the application are simple structure, practical and versatile.

Description

Technical Field

[0001] This invention relates to the field of metal sheet performance testing technology, and in particular to a sheet tensile, torsion and shear testing device. Background Technology

[0002] Metal sheets are widely used in high-end industrial manufacturing processes. Since metal sheets are subjected to destructive stresses such as tension, torsion and shear during use, companies need to test the fatigue strength of metal sheets before manufacturing. The fatigue strength of metal sheets refers to the maximum stress that a material can withstand without failure under an infinite number of alternating loads, and is called fatigue strength or fatigue limit.

[0003] However, due to the limitations of existing testing equipment, the performance testing of metal sheets can only test one of the tensile resistance, torsional resistance, and shear resistance. This requires the use of multiple different devices in combination, which not only increases the difficulty of debugging different devices, but also increases the workload of the staff. Summary of the Invention

[0004] The purpose of this invention is to solve the above-mentioned problems by designing a plate tensile-torsional-shear testing device.

[0005] To achieve the above objectives, the technical solution of the present invention is a plate tension-torsion-shear testing device, comprising a plate, with shear force testing units respectively provided above and below the plate, and clamping units respectively provided on the left and right sides of the plate. The two clamping units can respectively clamp the left edge and the right edge of the plate, and the two clamping units can respectively rotate the left edge and the right edge of the plate in the same or opposite directions. The two clamping units can also simultaneously pull the plate to the left and the right.

[0006] When the left and right edges of the plate rotate in opposite directions under the action of the two clamping units, the plate twists, enabling a twist test. When the left and right edges of the plate rotate in the same direction under the action of the two clamping units, the upper surface of the plate faces the shear force testing unit above the plate, and the lower surface of the plate faces the shear force testing unit below the plate, enabling the two shear force testing units to perform a shear force test on the plate. When the plate is pulled by the two clamping units, a tensile force test can be performed on the plate.

[0007] The clamping unit includes a baffle and a guide frame. The guide frame has a U-shaped structure, with longitudinal beams at both ends of the guide frame inserted through the baffle. The longitudinal beams at both ends of the guide frame can slide on the baffle. The crossbeam of the guide frame is located on one side of the baffle. A linear motor is fixedly installed on one side of the baffle, and the telescopic end of the linear motor is fixedly connected to the inner side of the crossbeam of the guide frame. The linear motor can drive the guide frame to move closer to or away from the baffle. The baffle has two through holes, which are respectively close to the longitudinal beams at both ends of the guide frame. The through holes connect one side of the baffle to the other side. The side is open, and a clamp is provided at the through hole. One end of the clamp passes through the through hole and is movably connected to the inner side of the crossbeam of the guide frame. The other end of the clamp is close to the plate. A connecting column and a rotary drive assembly are fixedly installed on the outer side of the crossbeam of the guide frame. The connecting column is a cylinder. The connecting column can rotate the guide frame, the baffle and the clamp under the drive of the rotary drive assembly. One end of the connecting column is fixedly connected to the outer side of the crossbeam of the guide frame. The other end of the connecting column is movably connected to the telescopic rod of the hydraulic cylinder through the connecting assembly. The connecting column can rotate relative to the telescopic rod of the hydraulic cylinder.

[0008] The clamp includes a swing arm, one end of which is movably connected to the inner side of the guide beam via a pin. A return spring is provided at the pin, which drives the swing arm to rotate around the longitudinal beam of the guide beam on the same side as the pin. The outer side of the swing arm abuts against one side of the through-hole cavity, which is arc-shaped. A protrusion is provided on the outer side of the other end of the swing arm, one end of which is located on the other side of the baffle and close to one side of the through-hole cavity. When the motor drives the guide... When the frame moves away from the baffle, the longitudinal beams at both ends of the guide frame slide toward one side of the baffle but do not disengage from the baffle. One end of the protrusion enters the through hole. One side of the inner cavity of the through hole drives the swing arm to overcome the elastic force of the return spring and swing toward the edge of the plate by squeezing the protrusion. A plate clamp is provided on the inner side of the other end of the swing arm. The plate clamp is provided with a notch. During the swinging process of the other end of the swing arm toward the plate, the edge of the plate is embedded in the notch on the plate clamp, and the plate is clamped by the two notches.

[0009] The plate clamp is trapezoidal in shape. The notch is arranged along the inclined surface of the plate clamp and communicates with the upper and lower bottom surfaces of the plate clamp. The size of the inner cavity of the notch is larger than the size of the edge of the plate. The notch is provided with a fastening bolt. When the two notches clamp the edge of the plate, the fastening bolt locks the edge of the plate in the inner cavity of the notch.

[0010] Limiting plates are fixedly installed on the longitudinal beams at both ends of the guide frame. The limiting plates are located on the other side of the baffle. When the plate is clamped by the two notches, the limiting plates are tightly attached to the other side of the baffle.

[0011] The rotary drive assembly includes a first gear, a second gear, and a rotary motor. The first gear is mounted on the connecting column and fixedly connected to the connecting column. The second gear is fixedly mounted on the rotating shaft of the rotary motor. The first gear meshes with the second gear.

[0012] The rotary motor is a servo motor, and it is fixedly installed on the ground by a bracket or base.

[0013] The connecting assembly includes a circular plate and an outer sleeve. The circular plate is fixedly installed at the other end of the connecting column, and the diameter of the circular plate is larger than the diameter of the connecting column. The outer sleeve has a cylindrical structure. One end face of the outer sleeve is fixedly connected to the telescopic rod of the hydraulic cylinder. An opening is provided on the other end face of the outer sleeve, and the opening communicates with the inner cavity of the outer sleeve. The inner cavity of the outer sleeve is cylindrical, and the size of the inner cavity of the outer sleeve matches the size of the circular plate. The circular plate is embedded in the inner cavity of the outer sleeve and can rotate within the inner cavity of the outer sleeve. The shape and size of the opening match the shape and size of the connecting column.

[0014] The shear force testing unit above the plate and the shear force testing unit below the plate are staggered, and the horizontal distance between the two shear force testing units does not exceed one centimeter. The shear force testing unit includes a shear force testing hammer and a drive rod. The shear force testing hammer is a cuboid metal part. The two shear force testing hammers are driven by the corresponding drive rod to synchronously press the surface of the plate to perform shear force testing on the plate.

[0015] Beneficial effects

[0016] A plate tensile-torsional-shear testing device manufactured using the technical solution of the present invention has the following advantages:

[0017] 1. This device utilizes the structural design of the clamps, rotary drive components, and connecting components on the clamp unit, in conjunction with the shear force testing unit, to enable multiple tests such as tensile force testing, torsion testing, and shear force testing of metal plates on the same equipment. This effectively enhances the versatility of the plate performance testing device, eliminating the need for multiple devices to cooperate in testing and effectively reducing the cost of plate testing for enterprises.

[0018] 2. During the testing process, this device only requires debugging one device under different test states, eliminating the need to set up and debug multiple devices. This effectively reduces workload and debugging difficulty, resulting in better practical performance.

[0019] 3. The fixture structure of this device adopts a swing arm and plate clamp design. The swing arm is driven by the through hole to make the notch on the plate clamp the edge of the four corners of the plate and is locked by fastening bolts. The entire fixture structure design is simple and practical, and effectively reduces production costs while ensuring the clamping effect. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the structure of the plate tension-torsion-shear testing device of the present invention when the plate is not clamped;

[0021] Figure 2 This is a schematic diagram of the clamping unit of the present invention when the plate is not clamped;

[0022] Figure 3 This is a schematic diagram of the structure of the plate tension-torsion-shear testing device of the present invention when clamping and fixing the plate;

[0023] Figure 4 This is a schematic diagram of the clamping unit of the present invention when clamping a plate;

[0024] Figure 5 This is a schematic diagram of the structure of the inner surface of the swing arm described in this invention;

[0025] Figure 6 This is a schematic diagram of the structure of the outer casing described in this invention;

[0026] Figure 7 This is a partially enlarged structural schematic diagram of the rotary drive assembly described in this invention;

[0027] In the diagram, 1. baffle; 2. guide frame; 3. linear motor; 4. through hole; 5. connecting column; 6. telescopic rod of hydraulic cylinder; 7. swing arm; 8. protrusion; 9. plate clamp; 10. notch; 11. fastening bolt; 12. limit plate; 13. gear one; 14. gear two; 15. rotary motor; 16. circular plate; 17. outer sleeve; 18. inner cavity; 19. shear force test hammer; 20. drive rod; 21. plate. Detailed Implementation

[0028] The present invention will now be described in detail with reference to the accompanying drawings, such as... Figure 1-7 As shown;

[0029] The inventive point of this application is that shear force testing units are respectively provided above and below the plate, and clamping units are respectively provided on the left and right sides of the plate. The two clamping units can clamp the left edge and right edge of the plate respectively, and the two clamping units can rotate the left edge and right edge of the plate in the same or opposite directions respectively. The two clamping units can also pull the plate to the left and right simultaneously. When the left edge and right edge of the plate rotate in opposite directions under the action of the two clamping units, the plate is twisted, and the plate can be subjected to a twist test. When the left edge and right edge of the plate rotate in the same direction under the action of the two clamping units, the upper surface of the plate can face the shear force testing unit above the plate, and the lower surface of the plate can face the shear force testing unit below the plate. The two shear force testing units can perform shear force testing on the plate. When the plate is pulled by the two clamping units, the plate can be subjected to a tensile force test.

[0030] The inventive point of this application also lies in that the clamping unit includes a baffle 1 and a guide frame 2. The guide frame has a U-shaped structure, and the longitudinal beams at both ends of the guide frame are inserted through the baffle. The longitudinal beams at both ends of the guide frame can slide on the baffle. The crossbeam of the guide frame is located on one side of the baffle. A linear motor 3 is fixedly installed on one side of the baffle. The telescopic end of the linear motor is fixedly connected to the inner side of the crossbeam of the guide frame. The linear motor can drive the guide frame to move closer to or away from the baffle. The baffle is provided with two through holes 4, which are respectively close to the longitudinal beams at both ends of the guide frame. The through holes allow the baffle to... One side is connected to the other side. A clamp is provided at the through hole. One end of the clamp passes through the through hole and is movably connected to the inner side of the crossbeam of the guide frame. The other end of the clamp is close to the plate. A connecting column 5 and a rotary drive assembly are fixedly installed on the outer side of the crossbeam of the guide frame. The connecting column is a cylinder. The connecting column can rotate the guide frame, the baffle and the clamp under the drive of the rotary drive assembly. One end of the connecting column is fixedly connected to the outer side of the crossbeam of the guide frame. The other end of the connecting column is movably connected to the telescopic rod 6 of the hydraulic cylinder through the connecting assembly. The connecting column can rotate relative to the telescopic rod of the hydraulic cylinder.

[0031] The inventive point of this application is that the fixture includes a swing arm 7, one end of which is movably connected to the inner side of the guide frame beam via a pin. A return spring is provided at the pin, which drives the swing arm to rotate around the longitudinal beam of the guide frame on the same side as the pin. The outer side of the swing arm abuts against one side of the inner cavity of the through hole, and one side of the inner cavity of the through hole is an arc-shaped surface. A protrusion 8 is provided on the outer side of the other end of the swing arm, one end of which is located on the other side of the baffle and close to one side of the inner cavity of the through hole. When the motor drives... When the guide frame moves away from the baffle, the longitudinal beams at both ends of the guide frame slide toward one side of the baffle but do not disengage from the baffle. One end of the protrusion enters the through hole. One side of the inner cavity of the through hole drives the swing arm to overcome the elastic force of the return spring and swing toward the edge of the plate by squeezing the protrusion. The inner side of the other end of the swing arm is provided with a plate clamp 9 and a notch 10. During the swinging process of the other end of the swing arm toward the plate, the edge of the plate is embedded in the notch on the plate clamp and the plate is clamped by the two notches.

[0032] The inventive point of this application is that the shape of the plate clamp is trapezoidal, the notch is arranged along the inclined surface of the plate clamp and communicates with the upper and lower bottom surfaces of the plate clamp, the size of the inner cavity of the notch is larger than the size of the edge of the plate, and a fastening bolt 11 is provided on the notch. When the two notches clamp the edge of the plate, the fastening bolt locks the edge of the plate in the inner cavity of the notch.

[0033] The inventive point of this application is that a limiting plate 12 is fixedly installed on the longitudinal beams at both ends of the guide frame. The limiting plate is located on the other side of the baffle. When the plate is clamped by the two notches, the limiting plate is in close contact with the other side of the baffle.

[0034] The electronic devices used in this technical solution are all existing products. The technical solution of this application does not have any special requirements or changes to the structure of the above electronic devices. The above electronic devices are all conventional electronic devices.

[0035] During the implementation of this technical solution, those skilled in the art need to connect all electrical components and their compatible power supplies through wires, and should select appropriate controllers according to actual conditions to meet control requirements. The specific connection and control sequence should refer to the working principle below, where the electrical components work sequentially to complete the electrical connection. The detailed connection methods are well-known in the art. The following mainly introduces the working principle and process, without explaining the electrical control.

[0036] In the implementation of this technical solution, the hydraulic cylinder is fixedly installed on a bracket or base. The telescopic rod of the hydraulic cylinder, connected to the connecting column, bears the weight of the entire clamping unit. Workers hoist the plate between the two clamping units. At this time, the plate clamps on the clamping units are close to the edge of the plate but do not contact it. The entire device appears as follows: Figure 1 The state is shown in the diagram. Subsequently, the operator starts the linear motor, which drives the guide frame away from the baffle. The longitudinal beams at both ends of the guide frame slide towards one side of the baffle but do not disengage from it. One protruding end enters the through hole, and one side of the through hole's inner cavity drives the swing arm to overcome the spring force of the return spring and swing towards the edge of the plate by squeezing the protrusion. The notch of the plate clamp on the swing arm engages with the edge of the plate. The operator uses fastening bolts to lock the plate clamp and the edge of the plate. At this time, the edges of the four corners of the plate are clamped by the four plate clamps on the two clamping units, and the entire device presents the state shown in the diagram. Figure 3 As shown in the diagram. When the left and right edges of the plate rotate in opposite directions under the drive of the two clamping units, the plate will twist, allowing for a plate twist test. When the left and right edges of the plate rotate in the same direction under the drive of the two clamping units, the plate can adjust its position relative to the two shear force testing units, facilitating subsequent shear force testing. When the telescopic rod of the hydraulic cylinder retracts, the hydraulic cylinder pulls the entire clamping unit through the connecting column, causing the clamping unit to pull the plate to both sides, allowing for a tensile test.

[0037] It should be noted that, in this document, relational terms such as "first" and "second" are used merely to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, the phrase "comprising an element defined as..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0038] The above technical solutions only embody the preferred technical solutions of the present invention. Any modifications that may be made by those skilled in the art to certain parts thereof embody the principles of the present invention and fall within the protection scope of the present invention.

Claims

1. A plate tensile-torsional-shear testing device, comprising a plate (21), wherein shear force testing units are respectively provided above and below the plate, and clamping units are respectively provided on the left and right sides of the plate, characterized in that, The two clamping units can respectively clamp the left and right edges of the plate, and the two clamping units can respectively rotate the left and right edges of the plate in the same or opposite directions. The two clamping units can also simultaneously pull the plate to the left and right. When the left and right edges of the plate rotate in opposite directions under the drive of the two clamping units, the plate twists, and the plate can be subjected to a twist test. When the left and right edges of the plate rotate in the same direction under the drive of the two clamping units, the upper surface of the plate can face the shear force testing unit above the plate, and the lower surface of the plate can face the shear force testing unit below the plate. The two shear force testing units can perform a shear force test on the plate. When the plate is pulled by the two clamping units, the plate can be subjected to a tensile force test. The clamping unit includes a baffle (1) and a guide frame (2). The guide frame has a U-shaped structure. The longitudinal beams at both ends of the guide frame are inserted through the baffle. The longitudinal beams at both ends of the guide frame can slide on the baffle. The crossbeam of the guide frame is located on one side of the baffle. A linear motor (3) is fixedly installed on one side of the baffle. The telescopic end of the linear motor is fixedly connected to the inner side of the crossbeam of the guide frame. The linear motor can drive the guide frame to move closer to or away from the baffle. The baffle is provided with two through holes (4). The two through holes are respectively close to the longitudinal beams at both ends of the guide frame. The through holes cover one side of the baffle. The guide frame is connected to the other side. A clamp is provided at the through hole. One end of the clamp passes through the through hole and is movably connected to the inner side of the crossbeam of the guide frame. The other end of the clamp is close to the plate. A connecting column (5) and a rotary drive assembly are fixedly installed on the outer side of the crossbeam of the guide frame. The connecting column is a cylinder. The connecting column can rotate the guide frame, the baffle and the clamp under the drive of the rotary drive assembly. One end of the connecting column is fixedly connected to the outer side of the crossbeam of the guide frame. The other end of the connecting column is movably connected to the telescopic rod (6) of the hydraulic cylinder through the connecting assembly. The connecting column can rotate relative to the telescopic rod of the hydraulic cylinder.

2. The plate tensile-torsional-shear testing device according to claim 1, characterized in that, The clamp includes a swing arm (7), one end of which is movably connected to the inner side of the guide frame beam via a pin. A return spring is provided at the pin, which drives the swing arm to rotate around the longitudinal beam of the guide frame on the same side as the pin. The outer side of the swing arm abuts against one side of the inner cavity of the through hole. One side of the inner cavity of the through hole is an arc-shaped surface. A protrusion (8) is provided on the outer side of the other end of the swing arm. One end of the protrusion is located on the other side of the baffle, and the other end of the protrusion is close to one side of the inner cavity of the through hole. When the motor drives the guide frame... When moving away from the baffle, the longitudinal beams at both ends of the guide frame slide toward one side of the baffle but do not disengage from the baffle. One end of the protrusion enters the through hole. One side of the inner cavity of the through hole drives the swing arm to overcome the elastic force of the return spring and swing toward the edge of the plate by squeezing the protrusion. A plate clamp (9) is provided on the inner side of the other end of the swing arm. A notch (10) is provided on the plate clamp. During the swinging process of the other end of the swing arm toward the plate, the edge of the plate is embedded in the notch on the plate clamp, and the plate is clamped by the two notches.

3. The plate tensile-torsional-shear testing device according to claim 2, characterized in that, The plate clamp is trapezoidal in shape. The notch is arranged along the inclined surface of the plate clamp and communicates with the upper and lower bottom surfaces of the plate clamp. The size of the inner cavity of the notch is larger than the size of the edge of the plate. The notch is provided with a fastening bolt (11). When the two notches clamp the edge of the plate, the fastening bolt locks the edge of the plate in the inner cavity of the notch.

4. The plate tensile-torsional-shear testing device according to claim 2, characterized in that, Limiting plates (12) are fixedly installed on the longitudinal beams at both ends of the guide frame. The limiting plates are located on the other side of the baffle. When the plate is clamped by the two notches, the limiting plates are tightly attached to the other side of the baffle.

5. The plate tensile-torsional-shear testing device according to claim 1, characterized in that, The rotary drive assembly includes a first gear (13), a second gear (14), and a rotary motor (15). The first gear is mounted on the connecting column and fixedly connected to the connecting column. The second gear is fixedly mounted on the rotating shaft of the rotary motor. The first gear meshes with the second gear.

6. The plate tensile-torsional-shear testing device according to claim 5, characterized in that, The rotary motor is a servo motor, and it is fixedly installed on the ground by a bracket or base.

7. The plate tensile-torsional-shear testing device according to claim 1, characterized in that, The connecting assembly includes a circular plate (16) and an outer sleeve (17). The circular plate is fixedly installed at the other end of the connecting column. The diameter of the circular plate is larger than the diameter of the connecting column. The outer sleeve is a cylindrical structure. One end face of the outer sleeve is fixedly connected to the telescopic rod of the hydraulic cylinder. An opening is provided on the other end face of the outer sleeve. The opening communicates with the inner cavity (18) of the outer sleeve. The inner cavity of the outer sleeve is cylindrical. The size of the inner cavity of the outer sleeve matches the size of the circular plate. The circular plate is embedded in the inner cavity of the outer sleeve and can rotate in the inner cavity of the outer sleeve. The shape and size of the opening match the shape and size of the connecting column.

8. The plate tensile-torsional-shear testing device according to claim 1, characterized in that, The shear force testing unit above the plate and the shear force testing unit below the plate are staggered from each other, and the horizontal distance between the two shear force testing units does not exceed one centimeter. The shear force testing unit includes a shear force testing hammer (19) and a drive rod (20). The shear force testing hammer is a cuboid metal part. The two shear force testing hammers are driven by the corresponding drive rod to synchronously press the surface of the plate to perform shear force testing on the plate.

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