Microcomputer-controlled electro-hydraulic servo fatigue testing machine

Abstract

The utility model discloses a microcomputer control electro-hydraulic servo fatigue testing machine which comprises a base, the top of the base is fixedly connected with two sets of sliding rods, the sliding rods are connected with a traction mechanism in a sliding mode, the top of the base and the bottom of the traction mechanism are fixedly provided with fixing seats, the fixing seats are fixedly provided with clamping mechanisms, and the clamping mechanisms are connected with the sliding rods in a sliding mode. A driving mechanism for driving the clamping mechanisms to clamp materials is arranged on the fixing base, and a protection mechanism is arranged on the base and located between the two clamping mechanisms. The clamping mechanism and the driving mechanism are installed in the fixing seat in a threaded mode, then the traction mechanism moves towards the base along the sliding rod, then the driving mechanism can be used for pushing the clamping mechanism to fix and clamp a circular tube, and therefore the circular tube can be prevented from being disengaged when the traction mechanism tests the tensile force of the circular tube, and the tensile strength of the circular tube is improved. And the arranged protection mechanism can protect the test piece, so that potential safety hazards during breakage or separation are prevented.

Description

Technical Field

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

[0002] An electro-hydraulic servo fatigue testing machine is a physical property testing instrument used in the fields of civil engineering and transportation engineering. It is mainly used for detecting the dynamic and static mechanical properties of various materials, parts, elastomers, rubber elastomers and shock absorbers. It can perform tensile, compression, bending, low-cycle and high-cycle fatigue, crack propagation, and fracture mechanics tests under sine wave, triangular wave, square wave, trapezoidal wave, sawtooth wave, and user-defined waveforms.

[0003] When testing materials, when encountering cylindrical materials, it is easy for the round tube to break away during the tensile test, which affects the test results. And if it falls off during the test, it is extremely likely to cause potential safety hazards. For this reason, we propose a microcomputer-controlled electro-hydraulic servo fatigue testing machine. Content of the Utility Model

[0004] The purpose of the utility model is to provide a microcomputer-controlled electro-hydraulic servo fatigue testing machine to solve the problems raised in the background technique.

[0005] To achieve the above purpose, the utility model provides the following technical solution: A microcomputer-controlled electro-hydraulic servo fatigue testing machine, including a base, two groups of sliding rods are fixedly connected to the top of the base, a top plate is fixedly installed on the top of the sliding rods, a pulling mechanism is slidably connected to the sliding rods, fixed seats are fixedly installed on the top of the base and the bottom of the pulling mechanism respectively, a clamping mechanism is fixedly installed on the fixed seats, a driving mechanism for driving the clamping mechanism to clamp the material is arranged on the fixed seats, and a protection mechanism is arranged on the base and between the two groups of clamping mechanisms.

[0006] Further, the pulling mechanism includes a sliding seat, a sliding sleeve, a mounting plate and a hydraulic telescopic rod. A sliding sleeve is slidably connected to the sliding rod, a sliding seat is fixedly connected to the outer surface of the sliding sleeve, a mounting plate is fixedly connected to the bottom of the sliding seat, two groups of hydraulic telescopic rods are fixedly connected to the top of the base, and the top of the hydraulic telescopic rod is fixedly connected to the mounting plate.

[0007] Further, the fixed seat includes a fixing plate, fixing bolts and a threaded mounting seat. The fixing plate is fixedly installed through a plurality of fixing bolts, and a threaded mounting seat is fixedly connected to the top of the fixing plate.

[0008] Further, the driving mechanism includes a threaded rod, a threaded sleeve, a first threaded rod, and a pushing seat. The top of the threaded rod is rotatably connected to the threaded sleeve. The threaded rod is threadedly connected to the threaded mounting seat. The first threaded rod is threadedly connected inside the threaded sleeve. The top of the first threaded rod is fixedly connected to a pushing seat with an inclined inner wall. Two turning handles are fixedly connected to the outer surface of the threaded sleeve.

[0009] Further, the clamping mechanism includes a mounting rod, a limiting plate, a clamping seat, and a first limiting groove. The mounting rod is fixedly installed inside the threaded rod. The top of the mounting rod passes through the threaded rod and the threaded sleeve and extends into the pushing seat. The top of the mounting rod is fixedly connected to the limiting plate. Two clamping seats are provided. First limiting grooves for clamping with the limiting plate are formed on the opposite sides of the two clamping seats. The outer wall of the clamping seat is provided with an inclined surface that fits the inner wall of the pushing seat. Clamping grooves are formed on the opposite sides of the two clamping seats.

[0010] Further, the protection mechanism includes a support rod, a first protective sleeve, and a second protective sleeve. The top of the base is fixedly connected to the first protective sleeve through the support rod. One side of the first protective sleeve is rotatably connected to the second protective sleeve through a rotating shaft. A second limiting groove is formed on one side of the first protective sleeve. A connecting plate inserted into the second limiting groove is fixedly connected to one side of the second protective sleeve. A threaded sleeve is provided on the surface of the first protective sleeve. A locking bolt is threadedly connected inside the threaded sleeve. One end of the locking bolt passes through the surface of the first protective sleeve and contacts the connecting plate. The other end of the locking bolt is fixedly connected to a knob.

[0011] Compared with the prior art, the present utility model has the following beneficial effects: The clamping mechanism and the driving mechanism provided in the present utility model are threadedly installed inside the fixed seat. Subsequently, the pulling mechanism moves along the sliding rod towards the base. Then, the driving mechanism can be used to push the clamping mechanism to fixedly clamp the round tube. In this way, it can prevent the round tube from detaching during the tensile test of the round tube by the pulling mechanism. The provided protection mechanism can protect the test piece and prevent safety hazards from occurring when it breaks or detaches. Description of the Drawings

[0012] Figure 1 It is a schematic structural diagram of the first three-dimensional view of the present utility model;

[0013] Figure 2 It is a schematic structural diagram of the second three-dimensional view of the present utility model;

[0014] Figure 3 It is a schematic diagram of the connection mechanism of the clamping mechanism and the driving mechanism of the present utility model in a three-dimensional view;

[0015] Figure 4 It is a schematic structural diagram of the protection mechanism of the present utility model in a three-dimensional view.

[0016] In the figure: 1 base, 2 sliding rod, 3 top plate, 4 pulling mechanism, 5 fixed seat, 6 clamping mechanism, 7 driving mechanism, 8 protection mechanism, 9 sliding seat, 10 sliding sleeve, 11 mounting plate, 12 hydraulic telescopic rod, 13 fixing plate, 14 fixing bolt, 15 threaded mounting seat, 16 threaded rod, 17 threaded sleeve, 18 first threaded rod, 19 pushing seat, 20 mounting rod, 21 limiting plate, 22 clamping seat, 23 first limiting groove, 24 clamping groove, 25 turning handle, 26 support rod, 27 first protective sleeve, 28 rotating shaft, 29 second protective sleeve, 30 second limiting groove, 31 connecting plate, 32 threaded sleeve, 33 locking bolt, 34 knob. Specific embodiments

[0017] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative work shall fall within the protection scope of the present invention.

[0018] Please refer to Figure 1 , the present invention provides a technical solution: a microcomputer-controlled electro-hydraulic servo fatigue testing machine, including a base 1, two groups of sliding rods 2 are fixedly connected to the top of the base 1, a top plate 3 is fixedly installed on the top of the sliding rods 2, a pulling mechanism 4 is slidably connected to the sliding rods 2, fixed seats 5 are fixedly installed on the top of the base 1 and the bottom of the pulling mechanism 4, a clamping mechanism 6 is fixedly installed on the fixed seats 5, a driving mechanism 7 for driving the clamping mechanism 6 to clamp the material is arranged on the fixed seats 5, and a protection mechanism 8 is arranged on the base 1 and between the two groups of clamping mechanisms 6.

[0019] Among them, the arranged clamping mechanism 6 and driving mechanism 7 are threadedly installed inside the fixed seat 5. Then, the pulling mechanism 4 moves along the sliding rod 2 towards the base 1. Subsequently, the driving mechanism 7 can be used to push the clamping mechanism 6 to fixedly clamp the round tube. In this way, it can be prevented that the round tube disengages when the pulling mechanism 4 conducts a tensile test on the round tube. And the arranged protection mechanism 8 can protect the test piece to prevent safety hazards from occurring when it breaks or disengages.

[0020] Please refer to Figure 1 and Figure 2, the pulling mechanism 4 includes a sliding seat 9, a sliding sleeve 10, a mounting plate 11 and a hydraulic telescopic rod 12. A sliding sleeve 10 is slidably connected to the sliding rod 2. A sliding seat 9 is fixedly connected to the outer surface of the sliding sleeve 10. A mounting plate 11 is fixedly connected to the bottom of the sliding seat 9. Two groups of hydraulic telescopic rods 12 are fixedly connected to the top of the base 1. The top of the hydraulic telescopic rod 12 is fixedly connected to the mounting plate 11.

[0021] Among them, when fixing the test piece and performing the tensile test, the setting of the hydraulic telescopic rod 12 can drive the sliding seat 9, the sliding sleeve 10 and the mounting plate 11 to move. And the hydraulic telescopic rods 12 are set in two groups, which can make the sliding seat 9 and the mounting plate 11 move more stably.

[0022] Please refer to Figure 1 and Figure 3 , the fixing seat 5 includes a fixing plate 13, fixing bolts 14 and a threaded mounting seat 15. The fixing plate 13 is fixedly installed through a plurality of groups of fixing bolts 14. A threaded mounting seat 15 is fixedly connected to the top of the fixing plate 13.

[0023] Among them, the provided fixing plate 13 is installed and fixed through a plurality of groups of fixing bolts 14. And the threaded mounting seat 15 provided on the top of the fixing plate 13 is threadedly connected to the driving mechanism 7, so as to facilitate the replacement of the driving mechanism 7 and the clamping mechanism 6.

[0024] Please refer to Figure 1 , Figure 2 and Figure 3 , the driving mechanism 7 includes a threaded rod 16, a threaded sleeve 17, a first threaded rod 18 and a pushing seat 19. The top of the threaded rod 16 is rotatably connected to a threaded sleeve 17. The threaded rod 16 is threadedly connected to the threaded mounting seat 15. The first threaded rod 18 is threadedly connected to the inside of the threaded sleeve 17. The top of the first threaded rod 18 is fixedly connected to a pushing seat 19 with an inclined inner wall. Two groups of turning handles 25 are fixedly connected to the outer surface of the threaded sleeve 17. The clamping mechanism 6 includes a mounting rod 20, a limiting plate 21, a clamping seat 22 and a first limiting groove 23. The mounting rod 20 is fixedly installed inside the threaded rod 16. The top of the mounting rod 20 passes through the threaded rod 16 and the threaded sleeve 17 and extends into the inside of the pushing seat 19. The top of the mounting rod 20 is fixedly connected to a limiting plate 21. The clamping seats 22 are provided in two groups. A first limiting groove 23 for clamping the limiting plate 21 is provided on the relative side of the two groups of clamping seats 22. The outer wall of the clamping seat 22 is provided with an inclined surface that fits the inner wall of the pushing seat 19. A clamping groove 24 is provided on the relative side of the two groups of clamping seats 22.

[0025] Among them, when it is necessary to clamp the circular tubular test piece, the test piece is placed inside the first limiting groove 23 between the two clamping seats 22. Then, the rotary handle 25 is rotated to make the threaded sleeve 17 rotate along the top of the threaded rod 16. Subsequently, the first threaded rod 18 can be used to drive the pushing seat 19 to move up and down. The moving pushing seat 19 up and down can push the two clamping seats 22 to contract along the limiting plate 21, so that the circular tubular test piece can be clamped and fixed by the two clamping seats 22.

[0026] Please refer to Figure 1 and Figure 4 As shown in FIGS.

[0027] and

[0028] the protection mechanism 8 includes a support rod 26, a first protective sleeve 27 and a second protective sleeve 29. The top of the base 1 is fixedly connected with the first protective sleeve 27 through the support rod 26. One side of the first protective sleeve 27 is rotatably connected with the second protective sleeve 29 through a rotating shaft 28. A second limiting groove 30 is formed on one side of the first protective sleeve 27. A connecting plate 31 inserted into the second limiting groove 30 is fixedly connected to one side of the second protective sleeve 29. A threaded sleeve 32 is arranged on the surface of the first protective sleeve 27. A locking bolt 33 is threadedly connected inside the threaded sleeve 32. One end of the locking bolt 33 penetrates through the surface of the first protective sleeve 27 and contacts the connecting plate 31. The other end of the locking bolt 33 is fixedly connected with a knob 34.​In use, first, the clamping mechanism 6 and the driving mechanism 7 are threadedly installed inside the fixed seat 5. Subsequently, the pulling mechanism 4 moves along the sliding rod 2 towards the base 1. Then, the driving mechanism 7 can be used to push the clamping mechanism 6 to fixedly clamp the round tube, so as to prevent the round tube from detaching when the pulling mechanism 4 conducts a tensile test on the round tube. The provided protection mechanism 8 can protect the test piece to prevent safety hazards from occurring when the test piece breaks or detaches. When fixing the test piece and conducting the tensile test, the hydraulic telescopic rod 12 is provided to drive the sliding seat 9, the sliding sleeve 10 and the mounting plate 11 to move. The hydraulic telescopic rod 12 is provided in two groups, which can make the sliding seat 9 and the mounting plate 11 move more stably. The provided fixing plate 13 is installed and fixed by a plurality of fixing bolts 14. The threaded mounting seat 15 provided at the top of the fixing plate 13 is threadedly connected to the driving mechanism 7, so as to facilitate the replacement of the driving mechanism 7 and the clamping mechanism 6. When clamping a round tube-shaped test piece, place the test piece inside the first limiting groove 23 between the two clamping seats 22. Then rotate the handle 25 to make the threaded sleeve 17 rotate along the top of the threaded rod 16. Then, the first threaded rod 18 can be used to drive the pushing seat 19 to move up and down. The moving pushing seat 19 can push the two clamping seats 22 to contract along the limiting plate 21, so as to clamp and fix the round tube-shaped test piece with the two clamping seats 22. After the test piece is clamped, rotate the second protective sleeve 29 to make it rotate along the rotating shaft 28. Then, the connecting plate 31 is inserted into the second limiting groove 30, so that the test piece can be hidden between the first protective sleeve 27 and the second protective sleeve 29. Then rotate the knob 34 to make the locking bolt 33 move along the threaded sleeve 32, so as to prevent the connecting plate 31 from detaching from the inside of the second limiting groove 30, and thus prevent safety hazards from occurring when the test piece falls off or breaks.

[0029] Although the embodiments of the present invention have been shown and described, for those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principle and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A microcomputer-controlled electro-hydraulic servo fatigue testing machine, comprising a base (1), the top of the base (1) being fixedly connected to two sets of slide bars (2), the top of the slide bars (2) being fixedly mounted with a top plate (3), characterized in that: A pulling mechanism (4) is slidably connected to the slide bar (2); a fixing seat (5) is fixedly installed on the top of the base (1) and the bottom of the pulling mechanism (4); a clamping mechanism (6) is fixedly installed on the fixing seat (5); a driving mechanism (7) for driving the clamping mechanism (6) to clamp the material is arranged on the fixing seat (5); and a protective mechanism (8) is arranged on the base (1) and between the two groups of clamping mechanisms (6).

2. A microcomputer-controlled electro-hydraulic servo fatigue testing machine according to claim 1, characterized in that: The pulling mechanism (4) comprises a sliding seat (9), a sliding sleeve (10), a mounting plate (11) and a hydraulic telescopic rod (12); the sliding sleeve (10) is slidably connected to the sliding rod (2); the outer surface of the sliding sleeve (10) is fixedly connected to the sliding seat (9); the bottom of the sliding seat (9) is fixedly connected to the mounting plate (11); the top of the base (1) is fixedly connected to two groups of hydraulic telescopic rods (12); the top of the hydraulic telescopic rod (12) is fixedly connected to the mounting plate (11).

3. A microcomputer-controlled electro-hydraulic servo fatigue testing machine according to claim 2, characterized in that: The fixing seat (5) comprises a fixing plate (13), fixing bolts (14) and a threaded mounting seat (15); the fixing plate (13) is fixedly mounted by means of a plurality of sets of fixing bolts (14); and the top of the fixing plate (13) is fixedly connected to the threaded mounting seat (15).

4. A microcomputer-controlled electro-hydraulic servo fatigue testing machine according to claim 3, characterized in that: The driving mechanism (7) comprises a threaded rod (16), a threaded sleeve (17), a first threaded rod (18) and a pushing seat (19); the top of the threaded rod (16) is rotatably connected to the threaded sleeve (17); the threaded rod (16) is threadedly connected to the threaded mounting seat (15); the inner thread of the threaded sleeve (17) is threadedly connected to the first threaded rod (18); the top of the first threaded rod (18) is fixedly connected to the pushing seat (19) whose inner wall is inclined; and the outer surface of the threaded sleeve (17) is fixedly connected to two sets of turning handles (25).

5. A microcomputer-controlled electro-hydraulic servo fatigue testing machine according to claim 4, characterized in that: The clamping mechanism (6) comprises a mounting rod (20), a limiting plate (21), a clamping seat (22) and a first limiting groove (23); the mounting rod (20) is fixedly mounted inside the threaded rod (16); the top of the mounting rod (20) passes through the threaded rod (16) and the threaded sleeve (17) and extends to the inside of the pushing seat (19); the top of the mounting rod (20) is fixedly connected to the limiting plate (21); the clamping seat (22) is arranged in two groups; the first limiting groove (23) which is clamped with the limiting plate (21) is provided on opposite sides of the two groups of clamping seats (22); the outer wall of the clamping seat (22) is arranged as an inclined surface which fits the inner wall of the pushing seat (19); the clamping groove (24) is provided on opposite sides of the two groups of clamping seats (22).

6. A microcomputer-controlled electro-hydraulic servo fatigue testing machine according to claim 5, characterized in that: The protective mechanism (8) comprises a support rod (26), a first protective sleeve (27) and a second protective sleeve (29); the top of the base (1) is fixedly connected to the first protective sleeve (27) via the support rod (26); one side of the first protective sleeve (27) is rotatably connected to the second protective sleeve (29) via a rotating shaft (28); one side of the first protective sleeve (27) is provided with a second limiting groove (30); one side of the second protective sleeve (29) is fixedly connected to a connecting plate (31) inserted into the second limiting groove (30); a threaded sleeve (32) is provided on the surface of the first protective sleeve (27); the internal thread of the threaded sleeve (32) is connected to a locking bolt (33); one end of the locking bolt (33) passes through the surface of the first protective sleeve (27) and contacts the connecting plate (31); the other end of the locking bolt (33) is fixedly connected to a knob (34).

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