A metal member tension-torsion testing device

Abstract

The application discloses a metal component tension-torsion test device, which comprises a base and a metal component, a first end plate is fixedly installed on the left end of the upper surface of the base, a second end plate is fixedly installed on the right end of the upper surface of the base, a fixed clamp is installed on the right side surface of the first end plate, one end of the metal component is inserted into the fixed clamp and locked by a fastening bolt on the fixed clamp, a tension-torsion unit is installed on the second end plate, the tension-torsion unit can rotate on the second end plate, the other end of the metal component is clamped by the tension-torsion unit, and the tension-torsion unit can perform a stretching and screwing action on the metal component. The metal component tension-torsion test device has the advantages of compact structure and double detection functions of tension and torsion.

Description

Technical Field

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

[0002] Metal components are widely used in the production and manufacturing process of the aviation industry, especially metal components connected by bolts or rivets. Since metal components connected by bolts or rivets are often used as the main load-bearing structure during use, the requirements for tensile strength and torsional strength of metal components and metal pipes are relatively high. Therefore, aviation companies need to test the tensile and torsional strength of metal components connected by fasteners before production and manufacturing.

[0003] However, due to the limitations of existing testing equipment, the performance testing of metal components can only test one of the tensile resistance and torsional resistance. This requires the use of two different devices in combination, which not only increases the difficulty of debugging 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 device for testing the tensile and torsional forces of metal components.

[0005] To achieve the above objectives, the technical solution of the present invention is as follows: a metal component tensile and torsional force testing device, comprising a base and a metal component, an end plate one fixedly installed on the left end of the upper surface of the base, an end plate two fixedly installed on the right end of the upper surface of the base, a fixing clamp installed on the right side of the end plate one, one end of the metal component inserted into the fixing clamp and locked by a fastening bolt on the fixing clamp, a tension torsion unit installed on the end plate two, the tension torsion unit being able to rotate on the end plate two, the tension torsion unit clamping the other end of the metal component, and the tension torsion unit being able to perform tensioning and twisting actions on the metal component.

[0006] The tensioning and torsioning unit includes a housing and a motor. The housing is located on the left side of the second end plate, and the motor is located on the right side of the second end plate. The motor is fixedly connected to the right side of the second end plate via a bracket. The left end of the housing has a rectangular opening, and the right end of the housing is closed. A tensioning component is provided at the rectangular opening at the left end of the housing. The tensioning component can clamp the other end of the metal component. A slot is provided on the closed surface at the right end of the housing. A torsioning component is installed in the slot. The torsioning component extends through the second end plate to the right side of the second end plate. The torsioning component is connected to the shaft of the motor and, driven by the motor, performs a torsioning action on the metal component through the housing.

[0007] The stretching assembly includes two mounting plates, a connecting structure, and a driving structure. The two mounting plates are parallel to each other and are fixedly installed on the upper and lower edges of the rectangular opening, respectively. Both mounting plates are parallel to the length direction of the metal component. Two pins are fixedly installed between the two mounting plates, and clamping arms are installed on each of the two pins, forming a clamping structure. The clamping arms can rotate around the pins. Arc-shaped grooves are provided on the opposite surfaces of the two clamping arms, with the arc-shaped grooves near the right end of the clamping arms. The left end of the connecting structure extends out of the rectangular opening and is inserted between the two clamping arms, hooking the two arc-shaped grooves. The driving structure can drive the connecting structure to slide. During the sliding process, the connecting structure can push the two clamping arms to open or pull the two clamping arms to clamp.

[0008] The connecting structure includes a slider and two guide plates. Both sides of the left end of the slider have protrusions. The two protrusions are respectively embedded in and hooked into the two arc-shaped grooves. The two guide plates are located on both sides of the slider and guide it to slide along the length of the metal component. Both guide plates are fixedly connected to the inner surface of the outer shell. A toggle groove is provided on one side of the right end of the slider. The position of the toggle groove matches the position of the driving structure. The driving structure can insert into the toggle groove and drive the slider to extend outwards or retract into the inner cavity of the outer shell. When the slider extends outwards, the two protrusions push the two clamping arms to open. When the slider retracts into the inner cavity of the outer shell, the two protrusions pull the two clamping arms to clamp.

[0009] The drive structure includes a swing arm and a hydraulic cylinder. A through hole is provided on one side of the housing, and a fixed shaft is installed at the through hole. The middle part of the swing arm is sleeved on the fixed shaft. One end of the swing arm is inserted into the actuation groove, and the other end of the swing arm extends to the outside of the housing. A hydraulic cylinder bracket is fixedly installed on the inner surface of the housing, and a hydraulic cylinder is installed on the hydraulic cylinder bracket. The telescopic rod of the hydraulic cylinder passes through one side of the housing, extends out of the housing, and presses against the other end of the swing arm. The bottom end of the hydraulic cylinder passes through the other side of the housing, extends out of the housing, and connects to the matching circuit and oil circuit.

[0010] The hydraulic cylinder telescopic rod is equipped with an end cap, which is hemispherical. The swing arm is a V-shaped rod with an obtuse angle at the bend. A return spring is provided on the fixed shaft. The return spring drives one end of the swing arm to rotate toward the rectangular opening. When the hydraulic cylinder telescopic rod retracts, the return spring drives one end of the swing arm to push the sliding body to extend outward toward the outer shell. When the hydraulic cylinder telescopic rod extends and pushes the other end of the swing arm to swing around the fixed shaft against the elastic force of the return spring, one end of the swing arm pushes the sliding body to retract toward the inner cavity of the outer shell.

[0011] The screwing assembly includes a driving gear, a driven gear, a drive shaft, and a hexagonal prism. The inner cavity of the slot is hexagonal, and the hexagonal prism is located inside the slot and fits against the inner surface of the slot. One end of the drive shaft is inserted into the slot and fixedly connected to the end face of the hexagonal prism. The drive shaft is coaxial with the hexagonal prism. A bearing is installed on the second end plate, and the other end of the drive shaft extends through the bearing to the right side of the second end plate. The driven gear is fixedly installed on the other end of the drive shaft, and the driving gear is fixedly installed on the rotating shaft of the motor. The driving gear meshes with the driven gear. Driven by the motor, the drive shaft drives the hexagonal prism, the outer shell, and the two clamping arms to rotate synchronously. The two clamping arms clamp the other end of the metal component and complete the twisting action of the metal component during the rotation.

[0012] A counterweight is fixedly installed on the other end of the drive shaft. The counterweight is located on the right side of the second end plate, and the weight of the counterweight matches the weight borne by one end of the drive shaft.

[0013] The outer shell is a rectangular shell or a cylindrical shell.

[0014] Beneficial effects

[0015] A metal component tensile and torsional force testing device manufactured using the technical solution of the present invention has the following advantages:

[0016] 1. This device integrates both the tensile and torsional structures onto a single housing, ensuring both the compactness and simplicity of the testing device. This avoids the problem of structural complexity caused by compactness and reduces the difficulty of operation and maintenance during use.

[0017] 2. During the testing process, this device can achieve dual testing functions of tension and torque by only controlling the hydraulic cylinder and motor to different degrees. It does not require too much setting and debugging, which effectively reduces the workload and debugging difficulty, and has better practical effect.

[0018] 3. In terms of the design of the clamp structure, this device uses the sliding body to push the two clamping arms to open or pull the two clamping arms to clamp. The entire clamp structure design is simple and practical, and effectively reduces production costs while ensuring the clamping effect. Attached Figure Description

[0019] Figure 1 This is a front view of a metal component tensile and torsional force testing device according to the present invention;

[0020] Figure 2 This is a top view of a metal component tensile and torsional force testing device according to the present invention;

[0021] Figure 3 This is a top view of a cross-sectional structural schematic diagram of a metal component tensile and torsional force testing device according to the present invention;

[0022] In the diagram, 1. Base; 2. Metal component; 3. End plate one; 4. Fixing clamp; 5. Housing; 6. Motor; 7. Bracket; 8. Rectangular opening; 9. Slot; 10. Mounting plate; 11. Pin; 12. Clamping arm; 13. Arc groove; 14. Sliding body; 15. Guide plate; 16. Actuating groove; 17. Swing arm; 18. Hydraulic cylinder; 19. Through hole; 20. Fixed shaft; 21. Hydraulic cylinder bracket; 22. End head; 23. Protrusion; 24. Driving gear; 25. Driven gear; 26. Drive shaft; 27. Hexagonal prism; 28. Bearing; 29. ​​Counterweight; 30. End plate two. Detailed Implementation

[0023] The present invention will now be described in detail with reference to the accompanying drawings, such as... Figure 1-3 As shown;

[0024] The inventive point of this application lies in installing a tension-twist unit on end plate two. The tension-twist unit can rotate on end plate two and clamp the other end of the metal component. The tension-twist unit can perform tensioning and twisting actions on the metal component. The tension-twist unit includes a housing 5 and a motor 6. The housing is located on the left side of end plate two, and the motor is located on the right side of end plate two. The motor is fixedly connected to the right side of end plate two through a bracket 7. The left end of the housing has a rectangular opening 8, and the right end of the housing is closed. A tensioning component is provided at the rectangular opening at the left end of the housing. The tensioning component can clamp the other end of the metal component. A slot 9 is provided on the closed surface at the right end of the housing. A twisting component is installed at the slot. The twisting component extends through end plate two to the right side of end plate two. The twisting component is connected to the rotating shaft of the motor and performs a twisting action on the metal component through the housing under the drive of the motor.

[0025] The tensioning assembly includes two mounting plates 10, a connecting structure, and a driving structure. The two mounting plates are parallel to each other and are fixedly installed on the upper and lower edges of the rectangular opening, respectively. Both mounting plates are parallel to the length direction of the metal component. Two pins 11 are fixedly installed between the two mounting plates. Each pin has a clamping arm 12, which forms a clamping structure. The clamping arms can rotate around the pins. Each clamping arm has an arc-shaped groove 13 on its opposite surface. The arc-shaped groove is close to the right end of the clamping arm. The left end of the connecting structure extends out of the rectangular opening and is inserted between the two clamping arms and hooks the two arc-shaped grooves. The driving structure can drive the connecting structure to slide. During the sliding process, the connecting structure can push the two clamping arms to open or pull the two clamping arms to clamp.

[0026] The inventive point of this application is that the connecting structure includes a slider 14 and two guide plates 15. Both sides of the left end of the slider are provided with protrusions 22. The two protrusions are respectively embedded in two arc-shaped grooves and hooked into the two arc-shaped grooves. The two guide plates are located on both sides of the slider and guide the slider to slide along the length direction of the metal component. Both guide plates are fixedly connected to the inner surface of the shell. A toggle groove 16 is provided on one side of the right end of the slider. The position of the toggle groove matches the position of the drive structure. The drive structure can be inserted into the toggle groove and drive the slider to extend out of the shell or retract into the shell cavity through the toggle groove. When the slider extends out of the shell, the two protrusions push the two clamping arms to open. When the slider retracts into the shell cavity, the two protrusions pull the two clamping arms to clamp.

[0027] The inventive point of this application also lies in that the drive structure includes a swing arm 17 and a hydraulic cylinder 18. A through hole 19 is provided on one side of the housing, and a fixed shaft 20 is installed at the through hole. The middle part of the swing arm is sleeved on the fixed shaft. One end of the swing arm is inserted into a moving groove, and the other end of the swing arm extends to the outside of the housing. A hydraulic cylinder bracket 21 is fixedly installed on the inner surface of the housing. A hydraulic cylinder is installed on the hydraulic cylinder bracket. The telescopic rod of the hydraulic cylinder passes through one side of the housing, extends out of the housing, and abuts against the other end of the swing arm. The bottom end of the hydraulic cylinder passes through the other side of the housing, extends out of the housing, and is connected to a matching electric motor. The hydraulic cylinder has a hydraulic cylinder extension rod with an end cap 23, which is hemispherical. The swing arm is a V-shaped rod with an obtuse angle at the bend. A return spring is provided on the fixed shaft. The return spring drives one end of the swing arm to rotate toward the rectangular opening. When the hydraulic cylinder extension rod retracts, the return spring drives one end of the swing arm to push the sliding body to extend outward toward the outer shell. When the hydraulic cylinder extension rod extends and pushes the other end of the swing arm to swing around the fixed shaft against the elastic force of the return spring, one end of the swing arm pushes the sliding body to retract toward the inner cavity of the outer shell.

[0028] The inventive point of this application is that the screwing assembly includes a driving gear 24, a driven gear 25, a drive shaft 26, and a hexagonal prism 27. The inner cavity of the slot is hexagonal, the hexagonal prism is located inside the slot and fits against the inner surface of the slot. One end of the drive shaft is inserted into the slot and fixedly connected to the end face of the hexagonal prism. The drive shaft is coaxial with the hexagonal prism. A bearing 28 is installed on the end plate 2. The other end of the drive shaft passes through the bearing and extends to the right side of the end plate 2. The driven gear is fixedly installed on the other end of the drive shaft. The driving gear is fixedly installed on the rotating shaft of the motor. The driving gear meshes with the driven gear. Under the drive of the motor, the drive shaft drives the hexagonal prism, the outer shell, and the two clamping arms to rotate synchronously. The two clamping arms clamp the other end of the metal component and complete the twisting action of the metal component during the rotation.

[0029] 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.

[0030] 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.

[0031] In the implementation of this technical solution, the operator installs one end of the metal component on the fixed clamp and locks it with fastening bolts. At this time, the other end of the metal component is located between the two clamping arms. When a tensile test is required, the operator starts the hydraulic cylinder. At this time, the motor is in a power-off and stopped state. The extension rod of the hydraulic cylinder extends and pushes the other end of the swing arm to swing around the fixed axis against the elastic force of the return spring. One end of the swing arm pushes the sliding body to retract into the inner cavity of the outer shell. The two protrusions on the sliding body pull the arc-shaped grooves on the two clamping arms. The left ends of the two clamping arms swing around the pin axis to the other end of the metal component and clamp the other end of the metal component. Then the extension rod of the hydraulic cylinder continues to extend. At this time, the pressure value output by the hydraulic cylinder is the tensile force value borne by the metal component. The sliding body continues to retract into the inner cavity of the outer shell. The two clamping arms, together with the fixed clamp, stretch the metal component, thereby completing the tensile test process of the metal component.

[0032] When torque testing is required, the operator activates the hydraulic cylinder. At this time, the motor is powered off and stopped. The hydraulic cylinder's extension rod extends, pushing the other end of the swing arm to swing around the fixed axis against the force of the return spring. One end of the swing arm pushes the sliding body to retract into the inner cavity of the outer shell. Two protrusions on the sliding body pull the arc-shaped grooves on the two clamping arms. The left ends of both clamping arms swing around the pin axis to the other end of the metal component, clamping it tightly. Then, the operator closes the hydraulic cylinder. The hydraulic cylinder locks the extension of the extension rod through a self-locking mechanism, ensuring that the two clamping arms remain clamped to the other end of the metal component. Subsequently, the motor is started. The motor's output power is proportional to the torque borne by the metal component. The motor drives the drive shaft to rotate through the drive and driven gears. During rotation, the drive shaft drives the hexagonal prism, the outer shell, and the two clamping arms to rotate synchronously. The two clamping arms clamp the other end of the metal component and complete the torsion action during rotation, thus realizing the torque testing process of the metal component.

[0033] 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.

[0034] 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 device for testing the tensile and torsional forces of a metal component, comprising a base (1) and a metal component (2), wherein an end plate (3) is fixedly installed on the left end of the upper surface of the base, and an end plate (30) is fixedly installed on the right end of the upper surface of the base, and a fixing clamp (4) is installed on the right side of the end plate (3), wherein one end of the metal component is inserted into the fixing clamp and locked by a fastening bolt on the fixing clamp, characterized in that, A tensioning torsion unit is installed on the second end plate. The tensioning torsion unit can rotate on the second end plate. The tensioning torsion unit clamps the other end of the metal component. The tensioning torsion unit can perform stretching and twisting actions on the metal component. The stretching and twisting unit includes a housing (5) and a motor (6). The left end of the housing is provided with a rectangular opening (8). A stretching component is provided at the rectangular opening at the left end of the housing. The stretching component can clamp the other end of the metal component. The stretching assembly includes two mounting plates (10), a connecting structure and a driving structure. The two mounting plates are parallel to each other, and two pins (11) are fixedly installed between the two mounting plates. Each of the two pins is equipped with a clamping arm (12), and an arc groove (13) is provided on the opposite surface of the two clamping arms. The left end of the connecting structure is inserted between the two clamping arms and hooks the two arc grooves. The connecting structure includes a slider (14), and protrusions (22) are provided on both sides of the left end of the slider. The two protrusions are respectively embedded in the two arc-shaped grooves and hook the two arc-shaped grooves. A toggle groove (16) is provided on one side of the right end of the slider. The driving structure can be inserted into the toggle groove and drive the slider to extend out of the outer shell or retract into the inner cavity of the outer shell through the toggle groove. When the slider extends out of the outer shell, the two protrusions push the two clamping arms to open. When the slider retracts into the inner cavity of the outer shell, the two protrusions pull the two clamping arms to clamp. The drive structure includes a swing arm (17) and a hydraulic cylinder (18). One end of the swing arm is inserted into the actuation groove, and the telescopic rod of the hydraulic cylinder extends through one side of the housing, protrudes from the housing, and presses against the other end of the swing arm.

2. The device for testing the tensile and torsional forces of metal components according to claim 1, characterized in that, The outer casing is located on the left side of the second end plate, and the motor is located on the right side of the second end plate. The motor is fixedly connected to the right side of the second end plate via a bracket (7). The right end of the outer casing is closed, and a slot (9) is provided on the closed surface of the right end of the outer casing. A screwing assembly is installed at the slot. The screwing assembly extends through the second end plate to the right side of the second end plate. The screwing assembly is connected to the rotating shaft of the motor and performs a screwing action on the metal component through the outer casing under the drive of the motor.

3. The device for testing the tensile and torsional forces of metal components according to claim 2, characterized in that, The two mounting plates are respectively fixedly installed on the upper and lower edges of the rectangular opening. Both mounting plates are parallel to the length direction of the metal component. The two clamping arms form a clamping structure. The clamping arms can rotate around the pin. The arc-shaped groove is close to the right end of the clamping arm. The left end of the connecting structure extends out of the rectangular opening. The driving structure can drive the connecting structure to slide. During the sliding process, the connecting structure can push the two clamping arms to open or pull the two clamping arms to clamp.

4. The metal component tensile and torsional force testing device according to claim 3, characterized in that, The connection structure also includes two guide plates (15), which are located on both sides of the slider and guide the slider to slide along the length of the metal component. Both guide plates are fixedly connected to the inner surface of the housing, and the position of the actuating groove matches the position of the driving structure.

5. The tensile and torsional force testing device for metal components according to claim 4, characterized in that, A through hole (19) is provided on one side of the housing, and a fixed shaft (20) is installed at the through hole. The middle part of the swing arm is sleeved on the fixed shaft, and the other end of the swing arm extends to the outside of the housing. A hydraulic cylinder bracket (21) is fixedly installed on the inner surface of the housing. A hydraulic cylinder is installed on the hydraulic cylinder bracket, and the bottom end of the hydraulic cylinder extends out of the housing through the other side of the housing and is connected to the matching circuit and oil circuit.

6. The tensile and torsional force testing device for metal components according to claim 5, characterized in that, The hydraulic cylinder telescopic rod is equipped with an end (23), which is hemispherical. The swing arm is a V-shaped rod with an obtuse angle at the bent part of the swing arm. A return spring is provided on the fixed shaft. The return spring drives one end of the swing arm to rotate in the direction of the rectangular opening. When the hydraulic cylinder telescopic rod retracts, the return spring drives one end of the swing arm to push the sliding body to extend outward from the outer shell. When the hydraulic cylinder telescopic rod extends and pushes the other end of the swing arm to swing around the fixed shaft against the elastic force of the return spring, one end of the swing arm pushes the sliding body to retract into the inner cavity of the outer shell.

7. The device for testing the tensile and torsional forces of metal components according to claim 2, characterized in that, The screwing assembly includes a drive gear (24), a driven gear (25), a drive shaft (26), and a hexagonal prism (27). The inner cavity of the slot is hexagonal in shape. The hexagonal prism is located inside the slot and fits against the inner surface of the slot. One end of the drive shaft is inserted into the slot and fixedly connected to the end face of the hexagonal prism. The drive shaft is coaxial with the hexagonal prism. A bearing (28) is installed on the end plate 2. The other end of the drive shaft passes through the bearing and extends to the right side of the end plate 2. The driven gear is fixedly installed on the other end of the drive shaft. The drive gear is fixedly installed on the rotating shaft of the motor. The drive gear meshes with the driven gear. Under the drive of the motor, the drive shaft drives the hexagonal prism, the outer shell, and the two clamping arms to rotate synchronously. The two clamping arms clamp the other end of the metal component and complete the twisting action of the metal component during the rotation.

8. The tensile and torsional force testing device for metal components according to claim 7, characterized in that, A counterweight (29) is fixedly installed on the other end of the drive shaft. The counterweight is located on the right side of the end plate 2, and the weight of the counterweight matches the weight borne by one end of the drive shaft.

9. A testing device for tensile and torsional forces of metal components according to claim 1, characterized in that, The outer shell is a rectangular shell or a cylindrical shell.

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