Microcomputer-controlled electro-hydraulic servo torsional fatigue testing machine

Abstract

The utility model discloses a microcomputer control electro-hydraulic servo torsional fatigue testing machine which comprises a working plate, an end fixing mechanism fixedly connected with one end of a test piece is fixedly installed on one side of the top of the working plate, and an installation mechanism is fixedly installed on the top of the working plate. A torsion testing mechanism for testing the fixed torsion of the other end of the test piece is fixedly mounted at the top of the mounting mechanism, and an auxiliary positioning mechanism is fixedly mounted on the working plate. According to the utility model, one end of the test piece to be tested can be fixedly clamped by arranging the end part fixing mechanism, and the test piece can be supported by the arranged auxiliary positioning mechanism, so that the test piece is ensured to be in a horizontal state, and bending deformation caused by self gravity is avoided; and the possibility of potential safety hazards caused by manual supporting can be reduced, and then the mounting mechanism drives the torsion testing mechanism to move towards the other end of the test piece, so that the other end of the test piece can be clamped and fixed for torsion testing.

Description

Technical Field

[0001] The utility model relates to the technical field of testing devices, in particular to a microcomputer-controlled electro-hydraulic servo torsion fatigue testing machine. Background Art

[0002] The microcomputer controlled electro-hydraulic servo torsion fatigue testing machine is a high-precision device specially used for testing the mechanical properties of materials. It combines microcomputer control technology, electro-hydraulic servo technology and material testing technology, and is mainly used to measure and analyze the fatigue characteristics of various materials under torsion load, including metals, alloys, and composite materials.

[0003] When a cylindrical test piece is subjected to a torsion test, one end of the test piece needs to be fixed, and then the other end needs to be fixed, and then the torsion test is performed by rotation. The existing equipment needs to be manually supported when performing a torsion test, and then the other end is clamped and fixed by a mechanical structure. Such a hand-held method is prone to safety hazards, and if one end of the torsion test is displaced during the torsion test, it is easy to affect the test results. For this reason, we propose a microcomputer-controlled electro-hydraulic servo torsion fatigue testing machine. Utility Model Content

[0004] The utility model aims to provide a microcomputer-controlled electro-hydraulic servo torsion fatigue testing machine to solve the problems raised in the background technology.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a microcomputer-controlled electro-hydraulic servo torsion fatigue testing machine, comprising a working plate, the bottom of the working plate is fixedly connected to a supporting leg, one side of the top of the working plate is fixedly installed with an end fixing mechanism fixedly connected to one end of a test piece, the top of the working plate is fixedly installed with a mounting mechanism, the top of the mounting mechanism is fixedly installed with a torsion testing mechanism for fixing the other end of the test piece for torsion testing, and an auxiliary positioning mechanism for supporting test pieces of different sizes is fixedly installed on the working plate and between the end fixing mechanism and the torsion testing mechanism.

[0006] Furthermore, the end fixing mechanism includes a first mounting plate, a reinforcement plate, a first three-jaw chuck and a first fixing clamp. The first mounting plate is fixedly installed on the top of the working plate. The top of the working plate is fixedly connected to one side of the first mounting plate through the reinforcement plate. The first three-jaw chuck is fixedly installed on one side of the first mounting plate. The first fixing clamp is fixedly installed on the movable jaw of the first three-jaw chuck through a locking bolt.

[0007] Furthermore, the mounting mechanism includes an electric slide rail, an electric slider, a connecting rod and a second mounting plate. The electric slide rail is arranged in two groups and is fixedly mounted on the top of the working plate. The electric slide rail is slidably connected to the electric slider, and the top of the electric slider is fixedly connected to the second mounting plate via a connecting rod.

[0008] Furthermore, the torsion testing mechanism includes a driving motor, a second three-jaw chuck and a second fixing fixture, a driving motor is fixedly installed on one side of the second mounting plate, an output end of the driving motor is fixedly connected to the second three-jaw chuck, a movable jaw of the second three-jaw chuck is fixedly connected to the second fixing fixture by a locking bolt, positioning patterns are provided on the inner walls of the first fixing fixture and the second fixing fixture, a plurality of support columns are fixedly connected to one side of the second mounting plate, and a ball bearing that fits one side of the second three-jaw chuck is rotatably connected to one side of the support column.

[0009] Furthermore, the auxiliary positioning mechanism includes a limit sleeve, a limit rod, a support block, a threaded sleeve and a threaded rod. A plurality of limit sleeves are fixedly installed on the bottom of the working plate. The limit sleeve is internally slidably connected to the limit rod. The top of the limit rod and the position corresponding to the positioning pattern are fixedly connected to the support block. A threaded sleeve is fixedly installed on the bottom of the working plate. The internal thread of the threaded sleeve is connected to the threaded rod. The top of the threaded rod is rotatably connected to the bottom of the support block, and the bottom of the threaded rod is fixedly connected to a turntable.

[0010] Furthermore, two sets of support frames are fixedly installed on both sides of the second mounting plate, and the bottom of the support frame is rotatably connected to a limiting wheel that fits with the top of the working plate.

[0011] Compared with the prior art, the utility model has the following beneficial effects: the utility model can fix and clamp one end of the test piece to be tested by setting an end fixing mechanism, and the set auxiliary positioning mechanism can support the test piece, thereby ensuring that the test piece is in a horizontal state and will not cause bending deformation due to its own gravity, and can reduce the possibility of safety hazards caused by manual support. Subsequently, the installation mechanism drives the torsion test mechanism to move to the other end of the test piece, so that the other end of the test piece can be clamped and fixed for a torsion test, and the torsion test mechanism is limited when it moves and works, which can prevent the test result from being affected during the torsion test. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 It is a schematic diagram of the first stereogram structure of the utility model;

[0013] Figure 2 It is a schematic diagram of the second stereoscopic structure of the utility model;

[0014] Figure 3It is a third stereoscopic structural diagram of the utility model;

[0015] Figure 4 It is a fourth stereoscopic structural schematic diagram of the utility model.

[0016] In the figure: 1 working plate, 2 supporting legs, 3 end fixing mechanism, 4 mounting mechanism, 5 torsion testing mechanism, 6 auxiliary positioning mechanism, 7 first mounting plate, 8 reinforcement plate, 9 first three-jaw chuck, 10 first fixing fixture, 11 electric slide rail, 12 electric slider, 13 connecting rod, 14 second mounting plate, 15 driving motor, 16 second three-jaw chuck, 17 second fixing fixture, 18 limiting sleeve, 19 limiting rod, 20 supporting block, 21 threaded sleeve, 22 threaded rod, 23 turntable, 24 supporting frame, 25 limiting wheel, 26 supporting column, 27 ball bearing, 28 positioning pattern. DETAILED DESCRIPTION

[0017] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0018] See also Figure 1-Figure 4 The utility model provides a technical solution: a microcomputer-controlled electro-hydraulic servo torsion fatigue testing machine, comprising a working plate 1, a supporting leg 2 is fixedly connected to the bottom of the working plate 1, an end fixing mechanism 3 fixedly connected to one end of a test piece is fixedly installed on one side of the top of the working plate 1, a mounting mechanism 4 is fixedly installed on the top of the working plate 1, a torsion testing mechanism 5 for fixing the other end of the test piece for torsion testing is fixedly installed on the top of the mounting mechanism 4, and an auxiliary positioning mechanism 6 for supporting test pieces of different sizes is fixedly installed on the working plate 1 and between the end fixing mechanism 3 and the torsion testing mechanism 5.

[0019] Among them, by setting up the end fixing mechanism 3, one end of the test piece to be tested can be fixed and clamped, and the auxiliary positioning mechanism 6 can support the test piece, thereby ensuring that the test piece is in a horizontal state and will not cause bending deformation due to its own gravity, and can reduce the possibility of safety hazards caused by manual support. Subsequently, the installation mechanism 4 drives the torsion test mechanism 5 to move to the other end of the test piece, so that the other end of the test piece can be clamped and fixed for a torsion test, and the torsion test mechanism 5 is limited when it moves and works, which can prevent the test result from being affected during the torsion test.

[0020] See also Figure 1The end fixing mechanism 3 includes a first mounting plate 7, a reinforcement plate 8, a first three-jaw chuck 9 and a first fixing fixture 10. The first mounting plate 7 is fixedly installed on the top of the working plate 1. The top of the working plate 1 is fixedly connected to one side of the first mounting plate 7 through the reinforcement plate 8. The first three-jaw chuck 9 is fixedly installed on one side of the first mounting plate 7. The first fixing fixture 10 is fixedly installed on the movable claw of the first three-jaw chuck 9 through a locking bolt.

[0021] Among them, the test piece to be tested is placed between multiple groups of first fixing fixtures 10, and then the first three-jaw chuck 9 is started to work. The first single-jaw chuck 9 can drive multiple groups of first fixing fixtures 10 to work, so that one end of the test piece can be fixed.

[0022] See also Figure 1 , Figure 2 and Figure 3 The auxiliary positioning mechanism 6 includes a limiting sleeve 18, a limiting rod 19, a support block 20, a threaded sleeve 21 and a threaded rod 22. A plurality of limiting sleeves 18 are fixedly installed at the bottom of the working plate 1. The limiting sleeve 18 is internally slidably connected to the limiting rod 19. The top of the limiting rod 19 and the position corresponding to the positioning pattern 28 are fixedly connected to the support block 20. The bottom of the working plate 1 is fixedly installed with a threaded sleeve 21. The internal thread of the threaded sleeve 21 is connected to the threaded rod 22. The top of the threaded rod 22 is rotatably connected to the bottom of the support block 20. The bottom of the threaded rod 22 is fixedly connected to a turntable 23. When the structure 5 moves to the other end of the test piece, the second three-jaw chuck 16 is started to operate, and the second three-jaw chuck 16 can drive the multiple groups of second fixing clamps 17 to contract, so that the other end of the test piece can be clamped and fixed, and then the auxiliary positioning mechanism 6 is rotated to descend, and the positioning grooves 28 opened on the inner walls of the first fixing clamp 10 and the second fixing clamp 17 can prevent the test piece from sliding during the torsion test. After the clamping and fixing of the test piece is completed, the driving motor 15 can drive the second three-jaw chuck 16 and the second fixing clamp 17 to perform a torsion test, and the support column 26 and the ball 27 can prevent the second three-jaw chuck 16 from deflecting when rotating.

[0023] When the test piece is clamped for testing, the turntable 23 is rotated to drive the threaded rod 22 to move along the threaded sleeve 21, so that the support block 20 can be pushed to move up and down, so that the bottom of the test piece can be supported and limited to prevent deformation of one end of the test piece due to its own gravity after the clamping is completed, and the torsion test mechanism 5 can also be used to fix the other end of the test piece. In the process of the support block 20 moving up and down, it can be limited by the limit rod 19 and the limit sleeve 18 to prevent the support block 20 from deflecting when moving.

[0024] See also Figure 1 The mounting mechanism 4 includes an electric slide rail 11, an electric slider 12, a connecting rod 13 and a second mounting plate 14. The electric slide rail 11 is provided in two groups and is fixedly mounted on the top of the working plate 1. The electric slider 12 is slidably connected to the electric slide rail 11, and the top of the electric slider 12 is fixedly connected to the second mounting plate 14 via a connecting rod 13.

[0025] The torsion test mechanism 5 is installed on the second installation plate 14, and the electric slide rail 11 can drive the electric slider 12 and the torsion test mechanism 5 to move toward the other end of the test piece.

[0026] See also Figure 1 , Figure 2 and Figure 4 The torsion testing mechanism 5 includes a driving motor 15, a second three-jaw chuck 16 and a second fixing fixture 17. The driving motor 15 is fixedly installed on one side of the second mounting plate 14, and the output end of the driving motor 15 is fixedly connected to the second three-jaw chuck 16. The movable claw of the second three-jaw chuck 16 is fixedly connected to the second fixing fixture 17 through a locking bolt. The inner walls of the first fixing fixture 10 and the second fixing fixture 17 are both provided with positioning patterns 28. One side of the second mounting plate 14 is fixedly connected to multiple groups of support columns 26, and one side of the support column 26 is rotatably connected to a ball 27 that fits one side of the second three-jaw chuck 16.

[0027] Among them, when the torsion testing mechanism 5 moves to the other end of the test piece, the second three-jaw chuck 16 is started to operate, and the second three-jaw chuck 16 can drive multiple groups of second fixing clamps 17 to contract, so that the other end of the test piece can be clamped and fixed, and then the auxiliary positioning mechanism 6 is rotated to descend, and the positioning grooves 28 opened on the inner walls of the first fixing clamp 10 and the second fixing clamp 17 can prevent the test piece from sliding during the torsion test. After the clamping and fixing of the test piece is completed, the driving motor 15 can drive the second three-jaw chuck 16 and the second fixing clamp 17 to perform a torsion test, and the support column 26 and the ball 27 can prevent the second three-jaw chuck 16 from deflecting when it rotates.

[0028] See also Figure 1 Two sets of support frames 24 are fixedly installed on both sides of the second mounting plate 14. The bottom of the support frame 24 is rotatably connected to a limiting wheel 25 that fits the top of the working plate 1. The set support frame 24 and the limiting wheel 25 can support the second mounting plate 14, thereby preventing the torsion test mechanism 5 on the second mounting plate 14 from deviating and shaking when moving.

[0029] When in use, first, place the test piece to be tested between multiple groups of first fixing clamps 10, and then start the first three-jaw chuck 9 to work. The first single-jaw chuck 9 can drive multiple groups of first fixing clamps 10 to work, so that one end of the test piece can be fixed. When the test piece is clamped for testing, the turntable 23 is rotated to drive the threaded rod 22 to move along the threaded sleeve 21, so that the support block 20 can be pushed up and down, so that the bottom of the test piece can be supported and limited to prevent the test piece from being deformed due to its own gravity after one end of the clamping is completed. It can also facilitate the torsion test mechanism 5 to fix the other end of the test piece. In the process of the support block 20 moving up and down, it can be limited by the limit rod 19 and the limit sleeve 18 to prevent the support block 20 from deviating when moving. The torsion test mechanism 5 is installed on the second mounting plate 14, and the electric slide rail 11 can drive the electric slider 12 and the torsion test mechanism 5 to move to the other end of the test piece.

[0030] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A microcomputer-controlled electro-hydraulic servo torsion fatigue testing machine, comprising a working plate (1), the bottom of which is fixedly connected to a supporting leg (2), characterized in that: An end fixing mechanism (3) for fixing one end of a test piece is fixedly mounted on one side of the top of the working plate (1); a mounting mechanism (4) is fixedly mounted on the top of the working plate (1); a torsion testing mechanism (5) for fixing the other end of the test piece for torsion testing is fixedly mounted on the top of the mounting mechanism (4); an auxiliary positioning mechanism (6) for supporting test pieces of different sizes is fixedly mounted on the working plate (1) and located between the end fixing mechanism (3) and the torsion testing mechanism (5).

2. A microcomputer-controlled electro-hydraulic servo torsion fatigue testing machine according to claim 1, characterized in that: The end fixing mechanism (3) comprises a first mounting plate (7), a reinforcement plate (8), a first three-jaw chuck (9) and a first fixing fixture (10); the first mounting plate (7) is fixedly mounted on the top of the working plate (1); the top of the working plate (1) is fixedly connected to one side of the first mounting plate (7) via the reinforcement plate (8); the first three-jaw chuck (9) is fixedly mounted on one side of the first mounting plate (7); and the first fixing fixture (10) is fixedly mounted on the movable jaw of the first three-jaw chuck (9) via a locking bolt.

3. A microcomputer-controlled electro-hydraulic servo torsion fatigue testing machine according to claim 2, characterized in that: The mounting mechanism (4) comprises an electric slide rail (11), an electric slider (12), a connecting rod (13) and a second mounting plate (14); the electric slide rail (11) is arranged in two groups and is fixedly mounted on the top of the working plate (1); the electric slider (12) is slidably connected to the electric slide rail (11); and the top of the electric slider (12) is fixedly connected to the second mounting plate (14) via the connecting rod (13).

4. A microcomputer-controlled electro-hydraulic servo torsion fatigue testing machine according to claim 3, characterized in that: The torsion testing mechanism (5) comprises a driving motor (15), a second three-jaw chuck (16) and a second fixing fixture (17); the driving motor (15) is fixedly mounted on one side of the second mounting plate (14); the output end of the driving motor (15) is fixedly connected to the second three-jaw chuck (16); the movable jaws of the second three-jaw chuck (16) are fixedly connected to the second fixing fixture (17) via locking bolts; the inner walls of the first fixing fixture (10) and the second fixing fixture (17) are both provided with positioning grooves (28); a plurality of groups of support columns (26) are fixedly connected to one side of the second mounting plate (14); a ball (27) which is in contact with one side of the second three-jaw chuck (16) is rotatably connected to one side of the support column (26).

5. A microcomputer-controlled electro-hydraulic servo torsion fatigue testing machine according to claim 4, characterized in that: The auxiliary positioning mechanism (6) comprises a limiting sleeve (18), a limiting rod (19), a support block (20), a threaded sleeve (21) and a threaded rod (22); a plurality of limiting sleeves (18) are fixedly mounted on the bottom of the working plate (1); the limiting sleeve (18) is internally slidably connected to the limiting rod (19); the top of the limiting rod (19) and the position corresponding to the positioning pattern (28) are fixedly connected to the support block (20); a threaded sleeve (21) is fixedly mounted on the bottom of the working plate (1); the threaded sleeve (21) is internally threadedly connected to the threaded rod (22); the top of the threaded rod (22) is rotatably connected to the bottom of the support block (20); and the bottom of the threaded rod (22) is fixedly connected to a turntable (23).

6. A microcomputer-controlled electro-hydraulic servo torsion fatigue testing machine according to claim 5, characterized in that: Two groups of support frames (24) are fixedly mounted on both sides of the second mounting plate (14), and the bottom of the support frame (24) is rotatably connected to a limiting wheel (25) that fits with the top of the working plate (1).

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