Ultrahigh-temperature tiny sample electronic creep testing machine

Abstract

The utility model relates to the field of material science, and discloses an ultra-high temperature micro sample electronic creep testing machine which comprises a testing machine, the top of the testing machine is fixedly connected with supporting rods which are arranged in a rectangular array, the tops of the supporting rods are fixedly connected with a top plate, the top of the testing machine is provided with a hanging ring, the hanging ring is in threaded connection with a cross beam, and the cross beam is connected with the supporting rods. A stand column is fixedly connected to the inner wall of the cross beam, a super nut body is inserted into the cross beam through a connecting rod, a centering assembly is inserted into the cross beam through a connecting rod, a sensor mounting plate is attached to the lower surface of the centering assembly, and a locking sleeve is attached to the lower surface of the sensor mounting plate. The outer wall of the locking sleeve is in threaded connection with a coaxial rod, and the outer wall of the coaxial rod is in threaded connection with a universal joint nut. According to the utility model, by arranging the hanging ring, the cross beam, the pull tube, the sensor mounting plate and the like, the gravity influence of the pull rod at the lower part of the sample on the sample can be eliminated, and the test precision is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to material science field especially relates to a kind of superhigh temperature micro sample electronic creep testing machine. BACKGROUND

[0002] Testing machine is widely used in mechanical metallurgy, national defense military industry, aerospace, automobile manufacturing, scientific research institute, college and university and relevant quality inspection organization and other industry fields, superhigh temperature micro sample electronic creep testing machine is designed special fixture and loading mechanism for micro sample, can carry out high temperature tensile creep, high temperature compression creep, high temperature endurance, cycle endurance, stress relaxation and other tests.

[0003] Through the search, China patent publication No. CN115389339A discloses an electronic high temperature creep endurance strength testing machine, which forms different shapes and stretches and compresses to different degrees by bending assembly, rotating and twisting assembly, compression assembly and stretching assembly to meet the test requirements of different shapes and degrees of metal parts, and integrates them in the same high temperature furnace, which is convenient for high temperature creep test of metal parts with different shapes and stretching and compression degrees, and improves the test efficiency.

[0004] In the above technical scheme, the test sample is stretched or compressed by the cooperation of multiple components such as bending assembly, rotating and twisting assembly, etc., and the assembly process is complicated, the control system is complex, and the loading precision is low, which reduces the test efficiency and test accuracy, so a superhigh temperature micro sample electronic creep testing machine is proposed to solve the above problems. UTILITY MODEL CONTENT

[0005] In order to make up for the above shortcomings, the utility model provides a kind of superhigh temperature micro sample electronic creep testing machine, aims at improving the problem that the superhigh temperature micro sample electronic creep testing machine in prior art needs to use multiple components to cooperate to stretch and shrink for test, which leads to complicated assembly process and complex control, resulting in low test accuracy.

[0006] In order to achieve the above object, the utility model discloses the following technical scheme: a kind of ultrahigh temperature tiny sample electronic creep testing machine, including testing machine, the top of the testing machine is provided with lifting ring, the lifting ring is threadedly connected with crossbeam, the inner wall of the crossbeam is fixedly connected with stand, the crossbeam is inserted with super nut body by connecting rod, the crossbeam is inserted with centering assembly by connecting rod, the lower surface of the centering assembly is attached with sensor mounting plate, the lower surface of the sensor mounting plate is attached with locking sleeve, the outer wall of the locking sleeve is threadedly connected with coaxial stick, the outer wall of the coaxial stick is threadedly connected with universal joint nut, the bottom of the coaxial stick is threadedly connected with elastic universal joint, the lower end of the elastic universal joint is threadedly connected with spoke sensor, the bottom of the spoke sensor is fixedly connected with connecting disc by flange plate, the bottom of the connecting disc is fixedly connected with pull tube by flange plate, the outer wall of the pull tube is provided with middle plate, the bottom of the middle plate is provided with support cylinder, the bottom end of the pull tube is attached with screw nut mechanism, the lower end of the pull tube is provided with deep groove ball bearing, the lower end of the pull tube is provided with travel switch touchpad, the surface of the testing machine is provided with limit switch, the support cylinder is fixedly connected with bearing seat by screw, the inside of the testing machine is provided with servo motor, the output of the servo motor is fixedly connected with speed reducer, the output of the speed reducer is provided with synchronous belt mechanism.

[0007] As further description of the above technical solution:

[0008] The output shaft of the speed reducer is fixedly connected with the tensioning plate, the bottom of the testing machine is fixedly connected with the foot, the bottom end of the pull tube is provided with the internal hexagonal cylindrical head screw, the inner wall of the testing machine is fixedly connected with the connecting plate, the top end of the super nut body is threadedly connected with the super nut piece.

[0009] As further description of the above technical solution:

[0010] The inner wall of the middle plate is fixedly connected with the outer wall of the stand.

[0011] As further description of the above technical solution:

[0012] The top end of the support cylinder is fixedly connected with the bottom of the middle plate.

[0013] As further description of the above technical solution:

[0014] The pull tube is penetrated by the middle plate, and the lower end of the pull tube is located inside the support cylinder.

[0015] As further description of the above technical solution:

[0016] The synchronous belt mechanism is drivingly connected with the output end of the speed reducer, and the synchronous belt mechanism is drivingly connected with the screw nut mechanism.

[0017] As a further description of the above technical solutions:

[0018] The tensioning plate is threadedly connected with a hexagonal head bolt.

[0019] As a further description of the above technical solutions:

[0020] The tensioning plate is located on the upper surface of the connecting plate.

[0021] As a further description of the above technical solutions:

[0022] The upper and lower ends of the elastic universal joint are respectively connected with the coaxial rod and the spoke sensor.

[0023] The utility model has the following beneficial effects:

[0024] 1. In the utility model, through the cooperation of the structures such as the lifting eye, the cross beam, the pull pipe, the sensor mounting plate, the centering assembly, the coaxial rod, the elastic universal joint, the spoke sensor, the servo motor, the speed reducer, the synchronous belt mechanism and the screw nut mechanism, the influence of the lower pull rod of the sample on the gravity of the sample can be eliminated, the test precision is improved, the small sample can be subjected to the tests such as tensile creep, compression creep, endurance, cyclic endurance and stress relaxation under various environmental temperatures, the transmission efficiency is high, the test loading is stable, the structure is reasonable, the floor area is reduced, and the operation convenience is improved.

[0025] 2. In the utility model, through the cooperation of the structures such as the deep groove ball bearing, the travel switch touch plate, the limit switch, the bearing seat and the supporting cylinder, when the pull pipe is subjected to lifting displacement, the servo motor is automatically turned off when reaching the predetermined position, the limit position of the lower chuck is protected, the equipment is prevented from being damaged due to excessive movement, and the stability during the test is improved. BRIEF DESCRIPTION OF DRAWINGS

[0026] Figure 1 A main structure plane schematic view of the superhigh-temperature small sample electronic creep test machine is provided.

[0027] LEGEND:

[0028] 1. Lifting eye; 2. Super nut body; 3. Super nut part; 4. Centering assembly; 5. Cross beam; 6. Sensor mounting plate; 7. Locking sleeve; 8. Coaxial rod; 9. Universal joint nut; 10. Elastic universal joint; 11. Spoke sensor; 12. Connecting disc; 13. Pull pipe; 14. Middle plate; 15. Limit switch; 16. Travel switch touch plate; 17. Inner hexagonal cylindrical head screw; 18. Deep groove ball bearing; 19. Screw nut mechanism; 20. Bearing seat; 21. Connecting plate; 22. Anchor; 23. Hexagonal head bolt; 24. Synchronous belt mechanism; 25. Tensioning plate; 26. Speed reducer; 27. Servo motor; 28. Supporting cylinder; 29. Column. DETAILED DESCRIPTION

[0029] The technical solutions in the embodiments of the utility model will be apparently and completely described in connection with the drawings of the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments of the utility model, all the other embodiments obtained by the ordinary skilled in the art without creative labor belong to the protection scope of the utility model.

[0030] With reference to Figure 1 An embodiment provided by the utility model: a kind of ultrahigh temperature micro sample electronic creep testing machine, including testing machine, the top of testing machine is provided with lifting ring 1, lifting ring 1 is screw-connected with crossbeam 5, the inner wall of crossbeam 5 is fixedly connected with stand 29, crossbeam 5 is inserted with super nut body 2 by connecting rod, crossbeam 5 is inserted with centering assembly 4 by connecting rod, the lower surface of centering assembly 4 is attached with sensor mounting plate 6, the lower surface of sensor mounting plate 6 is attached with locking sleeve 7, the outer wall of locking sleeve 7 is screw-connected with coaxial stick 8, the outer wall of coaxial stick 8 is screw-connected with universal joint nut 9, the bottom of coaxial stick 8 is screw-connected with elastic universal joint 10, elastic universal joint 10 upper end is fixedly connected with lower pull rod, the lower end of elastic universal joint 10 is screw-connected with spoke sensor 11, the upper and lower ends of elastic universal joint 10 are connected with coaxial stick 8 and spoke sensor 11 respectively, the bottom of spoke sensor 11 is fixedly connected with connecting disc 12 by flange plate, the bottom of connecting disc 12 is fixedly connected with pull tube 13 by flange plate, the outer wall of pull tube 13 is provided with middle table plate 14, the bottom of middle table plate 14 is provided with support cylinder 28, pull tube 13 bottom end is attached with lead screw nut mechanism 19, the lower end of pull tube 13 is provided with deep groove ball bearing 18, the lower end of pull tube 13 is provided with travel switch touch panel 16, the surface of testing machine is provided with limit switch 15, support cylinder 28 is fixedly connected with bearing seat 20 by screw, bearing seat 20 is built-in a pair of deep groove ball bearings 18 and a pair of thrust ball bearings, the lower end surface of bearing seat 20 is connected with dust cover using screw, the inside of testing machine is provided with servo motor 27, the output end of servo motor 27 is fixedly connected with speed reducer 26, the output end of speed reducer 26 is provided with synchronous belt mechanism 24.

[0031] With reference to Figure 1, the inner wall of the middle platform 14 is fixedly connected with the outer wall of the column 29, the top end of the support cylinder 28 is fixedly connected with the bottom of the middle platform 14, the pull tube 13 penetrates the middle platform 14, the lower end of the pull tube 13 is located in the interior of the support cylinder 28, the synchronous belt mechanism 24 is in transmission connection with the output end of the speed reducer 26, the synchronous belt mechanism 24 is in transmission connection with the screw nut mechanism 19, the screw nut mechanism 19 is composed of a screw rod and a nut, the servo motor 27 controls the opening and closing of the synchronous belt mechanism 24 driven by the speed reducer 26 to operate, transmits the movement to the screw nut mechanism 19, the screw nut mechanism 19 is connected with the pull tube 13, converts the spiral movement into linear movement, so that the sample loading is realized, the tensioning plate 25 is screwedly connected with the hexagonal head bolt 23, the tensioning plate 25 is located on the output shaft of the speed reducer 26, and the main function of the tensioning plate 25 is to generate pressure and friction force through the tightening of the hexagonal head bolt 23, so that the transmission of the load is realized.

[0032] Referring to Figure 1 , the output shaft of the speed reducer 26 is fixedly connected with the tensioning plate 25, the tensioning plate 25 is located on the upper surface of the connecting plate 21, the bottom of the testing machine is fixedly connected with the foot 22, the bottom end of the pull tube 13 is provided with the inner hexagonal cylindrical head screw 17, the lower part of the pull tube 13 is separately provided with a threaded hole, a bearing blocking column is inserted into the threaded hole, a pair of deep groove ball bearings 18 and the travel switch touch plate 16 are installed on the bearing blocking column and are fixed by using the inner hexagonal cylindrical head screw 17, the inner wall of the testing machine is fixedly connected with the connecting plate 21, and the top end of the super nut body 2 is screwedly connected with the super nut part 3.

[0033] Working principle: the main machine frame adopts a double-column 29 portal structure, the main machine beam 5 and the testing machine are connected into a high-rigidity TPHS frame structure through the columns 29, have large main machine rigidity, are stable and reliable in a long-time test, adopt a servo driving system to load, the main machine power system adopts a servo motor 27 to drive, the servo motor 27 drives the synchronous belt mechanism 24 to rotate to the screw nut mechanism 19 through the speed reducer 26, the screw nut mechanism 19 operates to realize the lifting and lowering of the pull tube 13, has the characteristics of high transmission efficiency and stable test loading, the main machine structure is reasonable, the controller is built-in in the main machine, and a liquid crystal hand control box is operated, so that the main machine structure is optimized, the occupied space is reduced, temperature display is intuitive, the temperature control system is arranged in the main machine, a temperature instrument is installed on the front door plate, temperature observation is more intuitive, and operation is more convenient.

[0034] Finally, it should be noted that: the above only for the preferred embodiments of the present application, and is not intended to limit the present application, although the foregoing embodiments of the present application has been described in detail, for the skilled in the art, it still can be modified, or for part of the technical features of the equivalent replacement, the spirit and principles of the present application, made any modification, equivalent replacement, improvement, etc., should be included within the scope of the present application.

Claims

1. An ultra-high temperature microspecimen electron creep tester comprising a tester, characterized by: The top of the tester is provided with a lifting ring (1), the lifting ring (1) is threadedly connected with a cross beam (5), the inner wall of the cross beam (5) is fixedly connected with a stand (29), the cross beam (5) is inserted with a super nut body (2) through a connecting rod, the cross beam (5) is inserted with a centering assembly (4) through a connecting rod, the lower surface of the centering assembly (4) is attached with a sensor mounting plate (6), the lower surface of the sensor mounting plate (6) is attached with a locking sleeve (7), the outer wall of the locking sleeve (7) is threadedly connected with a coaxial rod (8), the outer wall of the coaxial rod (8) is threadedly connected with a universal joint nut (9), the bottom of the coaxial rod (8) is threadedly connected with an elastic universal joint (10), the lower end of the elastic universal joint (10) is threadedly connected with a spoke sensor (11), the bottom of the spoke sensor (11) is fixedly connected with a connecting disc (12) through a flange plate, the bottom of the connecting disc (12) is fixedly connected with a pull tube (13) through a flange plate, the outer wall of the pull tube (13) is provided with a middle table plate (14), the bottom of the middle table plate (14) is provided with a supporting cylinder (28), the pull tube (13) is attached with a lead screw nut mechanism (19) at the bottom end, the lower end of the pull tube (13) is provided with a deep groove ball bearing (18), the lower end of the pull tube (13) is provided with a travel switch touch panel (16), the surface of the tester is provided with a limit switch (15), the supporting cylinder (28) is fixedly connected with a bearing seat (20) through a screw, the inside of the tester is provided with a servo motor (27), the output end of the servo motor (27) is fixedly connected with a speed reducer (26), the output end of the speed reducer (26) is provided with a synchronous belt mechanism (24).

2. The ultra-high temperature micro-specimen electronic creep testing machine according to claim 1, characterized in that: The output shaft of the speed reducer (26) is fixedly connected with a tensioning plate (25), the bottom of the tester is fixedly connected with a footing (22), the bottom end of the pull tube (13) is provided with a hexagonal head cap screw (17), the inner wall of the tester is fixedly connected with a connecting plate (21), the top end of the super nut body (2) is threadedly connected with a super nut part (3).

3. The ultra-high temperature micro-specimen electronic creep testing machine according to claim 1, characterized in that: The inner wall of the middle table plate (14) is fixedly connected with the outer wall of the stand (29).

4. The ultra-high temperature micro-specimen electronic creep tester of claim 1, wherein: The top end of the supporting cylinder (28) is fixedly connected with the bottom of the middle table plate (14).

5. The ultra-high temperature micro-specimen electronic creep tester of claim 1, wherein: The pull tube (13) penetrates the middle table plate (14), and the lower end of the pull tube (13) is located inside the supporting cylinder (28).

6. The ultra-high temperature micro-specimen electronic creep tester of claim 1, wherein: The synchronous belt mechanism (24) is in transmission connection with the output end of the speed reducer (26), and the synchronous belt mechanism (24) is in transmission connection with the lead screw nut mechanism (19).

7. The ultra-high temperature micro-specimen electronic creep tester of claim 2, wherein: The tensioning plate (25) is threadedly connected with a hexagonal head bolt (23).

8. The ultra-high temperature micro-specimen electronic creep tester of claim 2, wherein: The tensioning plate (25) is located on the upper surface of the connecting plate (21).

9. The ultra-high temperature micro-specimen electronic creep tester of claim 1, wherein: The upper and lower ends of the elastic universal joint (10) are connected with the coaxial rod (8) and the spoke sensor (11) respectively. The output shaft of the speed reducer (26) is fixedly connected with a tensioning plate (25), the bottom of the tester is fixedly connected with a footing (22), the bottom end of the pull tube (13) is provided with a hexagonal head cap screw (17), the inner wall of the tester is fixedly connected with a connecting plate (21), the top end of the super nut body (2) is threadedly connected with a super nut part (3).

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