Metal component compressive strength detection device

Abstract

The invention discloses a metal component compressive strength detection device, and relates to the technical field of strength testing. A comprehensive test problem is solved. The device specifically comprises a rack, a guide rod is fixed to the top of the rack, a moving table is movably arranged at the top of the guide rod, a first fixing assembly used for fixing one end of a metal pipe is arranged at the top of the moving table, and a supporting frame is fixed to the top of one side of the rack through bolts; and a torsion applying mechanism which is used for fixing the other end of the metal pipe and applying torsion to the pipe is arranged on one side of the supporting frame. According to the invention, the first fixing assembly and the second fixing assembly are arranged to fix the metal pipe, and meanwhile, the hydraulic telescopic rod and the torsion motor are respectively arranged to respectively apply pulling / pressing force and torsion force between the first fixing assembly and the second fixing assembly, so that the axial strength and / or torsional strength of the metal pipe can be detected; the limitation problem in the prior art is solved.

Description

Technical Field

[0001] This invention relates to the field of strength testing technology, and in particular to a device for testing the compressive strength of metal components. Background Technology

[0002] As an important component of metal structures, metal pipes often withstand complex pressure loads during actual service. Their compressive strength is one of the core mechanical indicators for assessing structural safety and reliability. Therefore, accurate and efficient compressive strength testing of metal pipes is of great significance for product quality control, engineering safety assessment, and material performance research.

[0003] A search revealed a Chinese patent publication number CN223217215U, which discloses a high-temperature tensile strength testing device for CPVC pipes. The device includes a long box, a pulling mechanism inside the long box, a support platform on top of the pulling mechanism, a clamping mechanism on top of the support platform, a support plate fixedly connected to the bottom of the long box, a motor fixedly connected to the right side of the support plate, an output shaft fixedly connected to the output end of the motor, a transmission assembly on the outer wall of the output shaft, and a threaded cylinder inside the transmission assembly.

[0004] The aforementioned patent has the following shortcomings: it can only perform tensile strength tests on pipes, but since metal pipes are subjected to axial tension / compression and torque simultaneously during actual service, only performing axial tension / compression tests has certain limitations. Summary of the Invention

[0005] The purpose of this invention is to address the shortcomings of existing technologies by proposing a device for testing the compressive strength of metal components.

[0006] To achieve the above objectives, the present invention adopts the following technical solution: A device for testing the compressive strength of metal components includes a frame, a guide rod fixed to the top of the frame, a movable platform movably mounted on the top of the guide rod, a fixing component for fixing one end of a metal pipe on the top of the movable platform, a support frame fixed to one side of the top of the frame by bolts, and a torque applying mechanism for fixing the other end of the metal pipe and applying torque to the pipe on one side of the support frame.

[0007] Preferably, the torque application mechanism includes a fixing component two for fixing the end of the metal pipe and a torque motor fixed to the side wall of the support frame for time torque. The fixing component two is rotatably connected to the top inner wall of the support frame through a transition shaft, and the other end of the transition shaft is connected to the output shaft of the torque motor through a torque sensor.

[0008] Furthermore: a hydraulic telescopic rod is fixed to one side of the support frame by bolts, a connecting seat is fixed to the bottom outer wall of the moving platform by bolts, a cam is movably installed on the inner wall of the connecting seat, there are gaps between the two sides of the cam and the inner wall of the connecting seat, and a set of pressure sensors is installed in each gap, an insert rod is fixed to the inner wall of the cam, and the end of the insert rod is fixed to the telescopic end of the hydraulic telescopic rod.

[0009] Based on the aforementioned scheme: the fixing component 2 includes a fixing ring 1 and a fixing ring 2. The fixing ring 1 and the fixing ring 2 are coaxially fixed by a connecting frame. The side wall of the fixing ring 1 is radially slidably connected with a plurality of clamping blocks 1 that clamp the outer wall of the metal pipe. The side wall of the fixing ring 2 is radially slidably connected with a plurality of clamping blocks 2 that clamp the inner wall of the metal pipe.

[0010] A better option among the aforementioned solutions is: a rotating ring is rotatably connected to one side of the outer wall of the fixed ring, the end face of the rotating ring is provided with a vortex protrusion, and the side wall of the clamping block is provided with a vortex groove that engages with the vortex protrusion.

[0011] As a further embodiment of the present invention: a rotating ring two is rotatably connected to one side outer wall of the fixed ring one, and a vortex protrusion two is provided on the end face of the rotating ring two, and a vortex groove two is opened on the side wall of the clamping block two to engage with the vortex protrusion two.

[0012] Meanwhile, the outer wall of the second rotating ring is provided with a toothed groove, and the outer wall of the toothed groove is engaged with multiple planetary gears. The outer walls of the multiple planetary gears are engaged with the same external gear ring, which is fixed to the other end face of the first rotating ring. The same planetary carrier is rotatably connected to one side of the multiple planetary gears.

[0013] As a preferred embodiment of the present invention: the side wall of the connecting frame is fixed with a clamping motor by bolts, and the output shaft of the clamping motor is engaged with the outer wall of the planetary carrier by a gear set.

[0014] Meanwhile, the fixing component one may be the same as or different from the fixing component two.

[0015] As a preferred embodiment of the present invention: a control cabinet is provided on the front side of the frame, the control cabinet is electrically connected to the torque sensor and the pressure sensor, and the control cabinet is controlled to connect to the torque motor, the hydraulic telescopic rod and the clamping motor.

[0016] The beneficial effects of this invention are as follows: 1. The present invention fixes the metal pipe by setting a fixing component one and a fixing component two, and at the same time sets a hydraulic telescopic rod and a torque motor to apply tension / compression and torque to the fixing component one and the fixing component two respectively, thereby realizing the detection of the axial strength and / or torsional strength of the metal pipe, and solving the limitations of the prior art.

[0017] 2. In this invention, by setting a second fixing component, which uses a set of clamping blocks one and a set of clamping blocks two to clamp the inner and outer walls of the metal pipe based on a three-jaw clamping method, deformation is prevented from occurring due to large clamping force on one side for thin-walled pipes, thus ensuring the reliability of clamping.

[0018] 3. This invention, by setting an external gear ring, planetary gears and tooth grooves, adopts a form based on a planetary gear set. Utilizing the two degrees of freedom of the planetary gear set, on the one hand, it can realize the synchronous driving of a single clamping motor to clamp the inner and outer sides of the clamping block two and the clamping block one, saving power layout and increasing integration. On the other hand, it can also ensure that the internal and external pressure difference of the pipe clamping is small, further preventing the deformation of thin-walled pipes.

[0019] 4. In this invention, by setting up a control cabinet, which serves as a signal processing and control center, the system can receive, process, and analyze signals from torque and pressure sensors, and can also perform execution control on the torque motor, hydraulic telescopic rod, and clamping motor, thereby achieving automated detection. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the overall structure of a metal component compressive strength testing device proposed in this invention; Figure 2 This is a schematic diagram of the torque application mechanism of a metal component compressive strength testing device proposed in this invention; Figure 3 This is a schematic diagram showing the installation position and connection structure of the hydraulic telescopic rod of a metal component compressive strength testing device proposed in this invention; Figure 4 This invention provides a device for testing the compressive strength of metal components. Figure 3 Enlarged structural diagram of section A; Figure 5 This invention provides a schematic diagram of the structure of a fixed component two in a device for testing the compressive strength of metal components. Figure 1 ; Figure 6 This invention provides a schematic diagram of the vortex protrusion and vortex groove mating structure of a metal component compressive strength testing device. Figure 2 ; Figure 7 This is a schematic diagram of the vortex protrusion II and vortex groove II mating structure of a metal component compressive strength testing device proposed in this invention; Figure 8 This is a schematic diagram of the drive section of a metal component compressive strength testing device proposed in this invention.

[0021] In the diagram: 1. Frame; 2. Guide rod; 3. Moving stage; 4. Fixed component one; 5. Torque application mechanism; 6. Support frame; 7. Fixed component two; 8. Torque sensor; 9. Torque motor; 10. Hydraulic telescopic rod; 11. Connecting seat; 12. Protrusion; 13. Insert rod; 14. Pressure sensor; 15. Clamping block one; 16. Fixing ring one; 17. Clamping block two; 18. Fixing ring two; 19. Connecting frame; 20. Rotary ring one; 21. Scroll protrusion one; 22. Scroll groove one; 23. Scroll protrusion two; 24. Scroll groove two; 25. Gear groove; 26. Clamping motor; 27. Planetary carrier; 28. External gear ring; 29. ​​Planetary gear; 30. Control cabinet; 31. Transition shaft; 32. Rotary ring two. Detailed Implementation

[0022] The technical solution of the present invention will be further described in detail below with reference to specific embodiments.

[0023] Embodiments of the present invention are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and should not be construed as limiting the present invention.

[0024] Example 1: A device for testing the compressive strength of metal components, such as Figures 1-8 As shown, the device includes a frame 1, a guide rod 2 fixed to the top of the frame 1, a movable platform 3 movably mounted on the top of the guide rod 2, a fixing component 4 for fixing one end of a metal pipe on the top of the movable platform 3, a support frame 6 fixed to one side of the top of the frame 1 by bolts, and a torque applying mechanism 5 for fixing the other end of the metal pipe and applying torque to the pipe on one side of the support frame 6.

[0025] The torque application mechanism 5 includes a fixing component 2 7 for fixing the end of the metal pipe and a torque motor 9 fixed to the side wall of the support frame 6 for time torque. The fixing component 2 7 is rotatably connected to the top inner wall of the support frame 6 through a transition shaft 31. The other end of the transition shaft 31 is connected to the output shaft of the torque motor 9 through a torque sensor 8.

[0026] A hydraulic telescopic rod 10 is fixed to one side of the support frame 6 by bolts. A connecting seat 11 is fixed to the bottom outer wall of the moving platform 3 by bolts. A cam 12 is movably installed on the inner wall of the connecting seat 11. There are gaps between both sides of the cam 12 and the inner wall of the connecting seat 11, and a set of pressure sensors 14 are installed in each gap. An insert rod 13 is fixed to the inner wall of the cam 12, and the end of the insert rod 13 is fixed to the telescopic end of the hydraulic telescopic rod 10.

[0027] In use, the device can fix one end of the metal pipe with fixing component 4, and then fix the other end of the metal pipe with fixing component 7. After fixing, the hydraulic telescopic rod 10 generates telescopic force, which is transmitted to the moving platform 3 and finally applied to the axial direction of the metal pipe. The torque motor 9 is started, and the torque motor 9 can apply torque to fixing component 7 through torque sensor 8 and transition shaft 31, thereby applying torque to the steel pipe. When tension / compression and torque are applied, torque sensor 8 can sense the magnitude of torque, and pressure sensor 14 can sense the magnitude of tension / compression, thereby realizing the detection of axial strength and / or torsional strength of the metal pipe.

[0028] This device fixes the metal pipe by setting a fixing component 4 and a fixing component 7. At the same time, it is equipped with a hydraulic telescopic rod 10 and a torque motor 9 to apply tension / compression and torque to the fixing component 4 and the fixing component 7 respectively, thereby realizing the detection of the axial strength and / or torsional strength of the metal pipe, which solves the limitations of the prior art.

[0029] To address the fixation issue, this embodiment does not specifically limit the types of fixing component 4 and fixing component 7. Fixing component 4 and fixing component 7 can be configured in the same way or designed in different ways, allowing for flexible adjustment according to design requirements. Figures 5-8 As shown, the fixing component 2 7 includes a fixing ring 16 and a fixing ring 2 18. The fixing ring 16 and the fixing ring 2 18 are coaxially fixed by a connecting frame 19. The side wall of the fixing ring 16 is radially slidably connected to a plurality of clamping blocks 15 for clamping the outer wall of the metal pipe. The side wall of the fixing ring 2 18 is radially slidably connected to a plurality of clamping blocks 2 17 for clamping the inner wall of the metal pipe.

[0030] A rotating ring 20 is rotatably connected to one side of the outer wall of the fixed ring 16. A vortex protrusion 21 is provided on the end face of the rotating ring 20. A vortex groove 22 is provided on the side wall of the clamping block 15 to engage with the vortex protrusion 21.

[0031] One side of the fixed ring 16 is rotatably connected to a rotating ring 32. The end face of the rotating ring 32 is provided with a vortex protrusion 23. The side wall of the clamping block 17 is provided with a vortex groove 24 that engages with the vortex protrusion 23.

[0032] The outer wall of the second rotating ring 32 is provided with a toothed groove 25, and a plurality of planetary gears 29 are meshed on the outer wall of the toothed groove 25. The outer walls of the plurality of planetary gears 29 are meshed with the same external gear ring 28. The external gear ring 28 is fixed to the other end face of the first rotating ring 20, and the same planetary carrier 27 is rotatably connected to one side of the plurality of planetary gears 29. The side wall of the connecting frame 19 is fixed with a clamping motor 26 by bolts, and the output shaft of the clamping motor 26 is meshed with the outer wall of the planetary carrier 27 through a gear set.

[0033] When the clamping motor 26 is started, it drives the planetary carrier 27 to rotate. When the planetary carrier 27 rotates, it synchronously drives the outer gear ring 28 and the rotating ring 32 to rotate. When the outer gear ring 28 rotates, it drives the rotating ring 20 to rotate. Thus, through the meshing relationship between the scroll protrusion 21 and the scroll groove 22, it drives the clamping block 15 to move and clamp the outer wall of the metal pipe. At the same time, when the rotating ring 32 rotates, it drives the clamping block 17 to move and clamp the inner wall of the metal pipe through the meshing relationship between the scroll protrusion 23 and the scroll groove 24.

[0034] This device, by setting a fixing component 2 7, which adopts a three-jaw clamping method, uses a set of clamping blocks 1 15 and a set of clamping blocks 2 17 to clamp the inner and outer walls of the metal pipe respectively. This prevents deformation of thin-walled pipes due to large clamping force on one side, thus ensuring the reliability of clamping.

[0035] This device, by setting an external gear ring 28, planetary gears 29 and tooth grooves 25, adopts a form based on a planetary gear set. Utilizing the two degrees of freedom of the planetary gear set, on the one hand, it can realize the synchronous driving of a single clamping motor 26 to clamp the inner and outer sides of the clamping block 17 and the clamping block 15, saving power layout and increasing integration. On the other hand, it can also ensure that the internal and external pressure difference of the pipe clamping is small, further preventing the deformation of thin-walled pipes.

[0036] In this embodiment, one end of the metal pipe can be fixed by fixing component 4, and the other end of the metal pipe can be fixed by fixing component 7. After fixing, the hydraulic telescopic rod 10 generates a telescopic force, which is transmitted to the moving platform 3 and finally applied to the axial direction of the metal pipe. The torque motor 9 is then activated, and the torque motor 9 applies torque to fixing component 7 through the torque sensor 8 and the transition shaft 31, thereby applying torque to the steel pipe. When tension / compression and torque are applied, the torque sensor 8 can sense the magnitude of the torque, and the pressure sensor 14 can sense the magnitude of the tension / compression, thus achieving the application of torque to the metal pipe. The axial strength and / or torsional strength of the pipe are tested. The clamping action is as follows: When the clamping motor 26 is started, it can drive the planetary carrier 27 to rotate. When the planetary carrier 27 rotates, it will synchronously drive the external gear ring 28 and the rotating ring 32 to rotate. When the external gear ring 28 rotates, it can drive the rotating ring 20 to rotate. Thus, through the meshing relationship between the volute protrusion 21 and the volute groove 22, the clamping block 15 moves to clamp the outer wall of the metal pipe. At the same time, when the rotating ring 32 rotates, it can drive the clamping block 17 to move to clamp the inner wall of the metal pipe through the meshing relationship between the volute protrusion 23 and the volute groove 24.

[0037] Example 2: A device for testing the compressive strength of metal components, such as Figure 1As shown, in order to solve the problem of automated control, this embodiment makes the following improvements based on embodiment 1: a control cabinet 30 is provided on the front side of the frame 1, the control cabinet 30 is electrically connected to the torque sensor 8 and the pressure sensor 14, and the control cabinet 30 is controlled to the torque motor 9, the hydraulic telescopic rod 10 and the clamping motor 26.

[0038] In this embodiment, by setting up a control cabinet 30, which serves as a signal processing and control center, it can receive, process, and analyze the signals from the torque sensor 8 and the pressure sensor 14, and can also perform execution control on the torque motor 9, the hydraulic telescopic rod 10, and the clamping motor 26, thereby achieving automated detection.

[0039] The above description is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.

Claims

1. A device for testing the compressive strength of metal components, characterized in that, The frame (1) includes a guide rod (2) fixed on the top of the frame (1), a movable platform (3) movably arranged on the top of the guide rod (2), a fixing component (4) for fixing one end of the metal pipe on the top of the movable platform (3), a support frame (6) fixed on one side of the top of the frame (1) by bolts, and a torque applying mechanism (5) for fixing the other end of the metal pipe and applying torque to the pipe on one side of the support frame (6).

2. The compressive strength testing device for metal components according to claim 1, characterized in that, The torque application mechanism (5) includes a fixing component two (7) for fixing the end of the metal pipe and a torque motor (9) fixed to the side wall of the support frame (6) for time torque. The fixing component two (7) is rotatably connected to the top inner wall of the support frame (6) via a transition shaft (31). The other end of the transition shaft (31) is connected to the output shaft of the torque motor (9) via a torque sensor (8).

3. The compressive strength testing device for metal components according to claim 1, characterized in that, One side of the support frame (6) is fixed with a hydraulic telescopic rod (10) by bolts. The bottom outer wall of the moving platform (3) is fixed with a connecting seat (11) by bolts. A cam (12) is movably installed on the inner wall of the connecting seat (11). There are gaps between the two sides of the cam (12) and the inner wall of the connecting seat (11), and a set of pressure sensors (14) is installed in each gap. An insert rod (13) is fixed on the inner wall of the cam (12), and the end of the insert rod (13) is fixed to the telescopic end of the hydraulic telescopic rod (10).

4. The compressive strength testing device for metal components according to claim 2, characterized in that, The second fixing component (7) includes a first fixing ring (16) and a second fixing ring (18). The first fixing ring (16) and the second fixing ring (18) are coaxially fixed by a connecting frame (19). The side wall of the first fixing ring (16) is radially slidably connected to a plurality of clamping blocks (15) that clamp the outer wall of the metal pipe. The side wall of the second fixing ring (18) is radially slidably connected to a plurality of clamping blocks (17) that clamp the inner wall of the metal pipe.

5. The compressive strength testing device for metal components according to claim 4, characterized in that, One side of the fixed ring (16) is rotatably connected to a rotating ring (20), and the end face of the rotating ring (20) is provided with a vortex protrusion (21). The side wall of the clamping block (15) is provided with a vortex groove (22) that engages with the vortex protrusion (21).

6. The compressive strength testing device for metal components according to claim 5, characterized in that, One side of the fixed ring (16) is rotatably connected to a rotating ring (32). The end face of the rotating ring (32) is provided with a vortex protrusion (23). The side wall of the clamping block (17) is provided with a vortex groove (24) that engages with the vortex protrusion (23).

7. The compressive strength testing device for metal components according to claim 6, characterized in that, The outer wall of the second rotating ring (32) is provided with a toothed groove (25), and the outer wall of the toothed groove (25) is engaged with a plurality of planetary gears (29). The outer walls of the plurality of planetary gears (29) are engaged with the same external gear ring (28). The external gear ring (28) is fixed to the other end face of the first rotating ring (20), and the same planet carrier (27) is rotatably connected to one side of the plurality of planetary gears (29).

8. The compressive strength testing device for metal components according to claim 7, characterized in that, The side wall of the connecting frame (19) is fixed with a clamping motor (26) by bolts, and the output shaft of the clamping motor (26) is meshed with the outer wall of the planetary carrier (27) through a gear set.

9. The compressive strength testing device for metal components according to claim 4, characterized in that, The fixing component one (4) may be the same as or different from the fixing component two (7).

10. A device for testing the compressive strength of metal components according to claim 1, characterized in that, A control cabinet (30) is provided on the front side of the frame (1). The control cabinet (30) is electrically connected to the torque sensor (8) and the pressure sensor (14). The control cabinet (30) is also connected to the torque motor (9), the hydraulic telescopic rod (10), and the clamping motor (26).

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