Electric servo fatigue and tuberculosis testing machine
By using pressure sensors and servo motors to maintain stable pressure in the electric servo tester and using scraper plates to clean the scraps on the surface of the roller, the difficulty of pressure detection and rolling pressure of concrete slabs in the prior art during the rolling process is solved. The problem of unevenness improves the accuracy of fatigue tests.
Patent Information
- Application Number
- CN202420644340.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-04-01
- Publication Date
- 2024-12-27
- Estimated Expiration
- 2034-04-01
AI Technical Summary
The existing electric servo fatigue test machines cannot effectively detect the pressure distribution of concrete slabs during the rolling process, resulting in errors and inaccuracies in the fatigue test results, and the waste residue adhered to the roller surface affects the accuracy of the test results.
An electric servo fatigue tester is designed, using a pressure sensor and a servo motor to ensure that the concrete slab maintains a stable pressure during the rolling process, and the scraping plate is used to clean the scrap residue on the surface of the roller to ensure the consistency of the rolling pressure.
It effectively avoids the problem of excessive or insufficient pressure on the concrete slab, improves the accuracy and reliability of fatigue tests, and ensures uniform damage to the concrete slab during the rolling process.
Smart Images
Figure CN222259031U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of fatigue and tuberculosis testing machines, in particular to an electric servo fatigue and tuberculosis testing machine. Background Art
[0002] After a period of driving, cement concrete pavement will be damaged by cracks, deformation, looseness, subsidence and potholes, which will cause great inconvenience to people's travel. The quality of cement concrete pavement determines the quality of the road to a large extent. In order to ensure the quality of concrete structure products, fatigue tests need to be carried out before use.
[0003] Most of the traditional compressive fatigue testing equipment can only test its ability to resist compressive impact pressure, but cannot simulate the fatigue damage caused by vehicles running and rolling on normal roads. Therefore, we need to use an electric servo fatigue testing machine to test the fatigue strength of concrete slabs.
[0004] For example, the prior art Chinese patent authorization announcement number "CN212301083U" provides an electro-hydraulic servo fatigue testing machine, including a workbench with a support leg, a fixed seat with a bottom opening is inserted and fixed at the center of the upper end of the workbench, a placement plate is symmetrically hinged at the bottom of the fixed seat, connecting blocks are symmetrically fixed to the front and rear sides of the upper end of the fixed seat, an adjusting screw is screwed inside the connecting block, a clamping block is fixed to the bottom of the adjusting screw, cavities are opened on the left and right sides of the fixed seat, an air outlet is obliquely opened on one side of the fixed seat located at the cavity, the air outlet is connected to the cavity, and an air outlet mechanism is fixed to the upper end of the workbench at the rear side of the fixed seat.
[0005] When the device needs to clean the surface of the placement plate, the driving mechanism is controlled to move the support plate downward, so that unqualified concrete debris on the surface of the placement plate can be cleaned, which solves the problem of time-consuming and labor-intensive conventional cleaning operations and improves the overall efficiency of the device.
[0006] The existing electric servo fatigue testing machine fails to detect the pressure on the concrete slab when it is fixedly rolling the concrete slab, so as to avoid fatigue testing when the concrete slab is over-pressed or under-pressed, which leads to errors and inaccuracies in the results of the concrete fatigue test. At the same time, when the roller is rolling the concrete surface, waste debris and residue will be rolled out on the surface of the concrete slab and adhere to the surface of the roller. The surface of the roller is not scraped and cleaned, which will result in different degrees of rolling and damage to the surface of the concrete slab, affecting the accuracy of the fatigue test results of the concrete slab. Utility Model Content
[0007] The purpose of the utility model is to solve the shortcomings of the prior art that the pressure on the concrete slab cannot be detected, so as to avoid fatigue testing when the concrete slab is over-pressed or under-pressed, which leads to errors and inaccuracies in the results of the concrete fatigue test, and to propose an electric servo fatigue testing machine.
[0008] In order to achieve the above purpose, the utility model provides the following technical solutions:
[0009] An electric servo fatigue testing machine is designed, comprising a base, a first guide hole is opened on the surface of the base, a first guide rod is slidably passed inside the first guide hole, a placement plate is fixed at the top end of the first guide rod, a concrete slab is placed on the top end of the placement plate, a baffle is fixed at the top edge of the placement plate and at a position outside the concrete slab, a second connecting hole is opened on the surface of the baffle, a tightening bolt is passed through the inside of the second connecting hole, a tightening plate is fixed to the inner end of the tightening bolt, a connecting tube is fixed to the bottom end of the placement plate, an electric push rod is fixed at the top end of the base, the top end of the electric push rod is inserted into the connecting tube, a pressure sensor is fixed at the inner top end of the connecting tube and at a position located at the bottom end of the placement plate, a first connecting hole is opened at the outer bottom end of the connecting tube, a limiting bolt is disassembled inside the first connecting hole, a first top plate is fixed to the top end of the electric push rod, a spring is connected to the top end of the first top plate, and the top end of the spring is connected to the second top plate, and the top end of the second top plate is pressed tightly against the bottom end of the pressure sensor.
[0010] Furthermore, a supporting leg is fixed to the bottom end of the base, a supporting frame is fixed to the top of the base and at positions on both sides of the placement plate, a rotating rod is rotatably connected between the two supporting frames, a servo motor is fixed to one end of the rotating rod, a second guide rod is fixed between the two supporting frames and at positions on both sides of the rotating rod, an adjusting plate is installed on the surfaces of the second guide rod and the rotating rod, a third connecting hole is opened in the middle of the surface of the adjusting plate, the rotating rod passes through the third connecting hole, second guide holes are opened on the surface of the adjusting plate and at positions on both sides of the third connecting hole, the second guide rod slides through the second guide hole, an installing frame is fixed to the adjusting plate, a rotating rod is fixed inside the installing frame, a roller is rotatably installed on the surface of the rotating rod, the roller is pressed tightly against the top end of the concrete slab, and a scraping plate is fixed on the top end of the inner part of the installing frame.
[0011] Furthermore, the first guide rod is vertically arranged, the placement plate is a rectangular plate structure and is horizontally arranged, the concrete plate is a rectangular plate structure and is horizontally arranged, and the baffle is a rectangular plate structure and is vertically arranged, and its height is not higher than the top of the concrete plate.
[0012] Furthermore, the second connecting hole is a threaded rod structure, the tightening bolt is horizontally arranged and threadedly connected to the second connecting hole, and drives the tightening plate to rotate and move, the tightening plate is a circular plate structure, and is vertically tightened and arranged on the side of the concrete slab.
[0013] Furthermore, the connecting tube is a cylindrical structure and is vertically arranged, the electric push rod is vertically telescopically arranged between the base and the placement plate, and the first connecting hole is a threaded hole structure.
[0014] Furthermore, the first top plate and the second top plate are both circular plates, and are horizontally slidably installed inside the connecting tube and are located above the limiting bolt. The spring is compressed and slidably installed inside the connecting tube.
[0015] Furthermore, the support frame is a U-shaped structure and is vertically arranged with its top end horizontal. The rotating rod is a threaded rod structure and is horizontally arranged above the concrete slab. The servo motor is installed at the outer top end of the support frame. The second guide rod is a cylindrical rod structure and is horizontally arranged.
[0016] Furthermore, the adjustment plate is a rectangular plate structure, the third connecting hole is a threaded hole structure, and is threadedly connected to the rotating rod, the mounting frame is a C-shaped structure, and the top end is horizontally arranged, and its two sides are vertically arranged above the concrete slab, the rotating rod is a cylindrical rod structure, and is horizontally arranged, the roller is a cylindrical structure, and is horizontally pressed against the top end of the concrete slab, and is rotatably installed and connected to the mounting frame through the rotating rod, the scraping plate is a rectangular plate structure, and is vertically arranged, and is located on both sides of the top end of the roller, and its bottom end is in scraping contact with the surface of the roller.
[0017] The electric servo fatigue tester proposed by the utility model has the following beneficial effects:
[0018] 1. The utility model arranges a first top plate, a spring and a second top plate at the top of the electric push rod, and installs a pressure sensor at the top of the connecting tube at the bottom end of the placement plate. Therefore, the concrete plate is placed on the top of the placement plate, and the top plate is tightened against the side of the concrete plate by rotating the tightening bolt to keep the concrete plate stable and not sliding. At the same time, the electric push rod extends upward and pushes the pressure sensor upward through the first top plate, the spring and the second top plate to lift the concrete plate to the bottom end of the roller and continue to push upward. At this time, the spring is compressed and reaches the pressure value set by the pressure sensor, stopping the electric push rod from extending upward to avoid excessive pressure on the concrete plate. Or insufficient pressure may cause errors and inaccuracies in the test results. Therefore, the servo motor drives the rotating rod to rotate forward or reverse, so that the roller moves back and forth along the second guide rod on the top of the concrete slab and rolls. When the top of the concrete slab is damaged by the rolling of the roller and the thickness is reduced, the pressure value of the pressure sensor becomes smaller, and the electric push rod can be started to extend upward, and the placement plate and the concrete slab are pushed upward through the first top plate, the spring and the second top plate. The spring has an outward elastic force, which can keep the placement plate and the concrete slab always under the upward elastic force of the spring, thereby preventing the concrete slab from being damaged by rolling and the roller from being unable to roll the concrete slab after the thickness is reduced.
[0019] 2. The utility model has scraping plates inside the installation frame and on both sides of the top of the roller, and the bottom ends of the scraping plates are in scraping contact with the surface of the roller. Therefore, in the process of the roller rolling the top of the concrete slab, the bottom ends of the scraping plates scrape the surface of the roller to clean up the adhered concrete debris and residues, and the roller surface is kept clean to roll different positions of the top of the concrete slab, avoiding different rolling pressures on the concrete slab due to the debris and residues adhered to the roller surface, thereby improving the accuracy of the fatigue test results of the concrete slab. BRIEF DESCRIPTION OF THE DRAWINGS
[0020] Figure 1 It is a schematic diagram of the overall structure of the utility model;
[0021] Figure 2 For this utility model Figure 1 The enlarged view of point D;
[0022] Figure 3 For this utility model Figure 1 Schematic diagram of the overall structure;
[0023] Figure 4 For this utility model Figure 3 The enlarged view of point E;
[0024] Figure 5 For this utility model Figure 1 A cross-sectional view of
[0025] Figure 6For this utility model Figure 5 A magnified image of point A;
[0026] Figure 7 For this utility model Figure 5 The enlarged view of point B;
[0027] Figure 8 For this utility model Figure 5 Enlarged view of point C.
[0028] In the figure: 1. base; 2. supporting leg; 3. first guide rod; 4. first guide hole; 5. electric push rod; 6. placement plate; 7. tightening bolt; 8. support frame; 9. servo motor; 10. rotating rod; 11. tightening plate; 12. roller; 13. baffle; 14. concrete slab; 15. connecting tube; 16. pressure sensor; 17. second top plate; 18. spring; 19. first top plate; 20. limiting bolt; 21. first connecting hole; 22. second connecting hole; 23. rotating rod; 24. scraper plate; 25. mounting frame; 26. adjusting plate; 27. third connecting hole; 28. second guide hole; 29. second guide rod. DETAILED DESCRIPTION
[0029] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments.
[0030] Example 1
[0031] See also Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 , Figure 6 , Figure 7 and Figure 8The electric servo fatigue tester shown in the figure includes a base 1, a first guide hole 4 is opened on the surface of the base 1, a first guide rod 3 slides through the inside of the first guide hole 4, a placement plate 6 is fixed to the top of the first guide rod 3, a concrete slab 14 is placed on the top of the placement plate 6, a baffle 13 is fixed to the top edge of the placement plate 6 and located outside the concrete slab 14, a second connecting hole 22 is opened on the surface of the baffle 13, a tightening bolt 7 passes through the inside of the second connecting hole 22, a tightening plate 11 is fixed to the inner end of the tightening bolt 7, and a connecting bolt 11 is fixed to the bottom end of the placement plate 6 The top of the base 1 is fixed with an electric push rod 5, the top of the electric push rod 5 is inserted into the connecting tube 15, the inner top of the connecting tube 15 and the position at the bottom end of the placing plate 6 is fixed with a pressure sensor 16, the outer bottom end of the connecting tube 15 is provided with a first connecting hole 21, the inner limit bolt 20 of the first connecting hole 21 is disassembled, the top of the electric push rod 5 is fixed with a first top plate 19, the top of the first top plate 19 is connected with a spring 18, the top of the spring 18 is connected with a second top plate 17, and the top of the second top plate 17 is pressed tightly against the bottom end of the pressure sensor 16.
[0032] The concrete slab 14 is placed on the top of the placing plate 6, and the tightening plate 11 is tightened against the side of the concrete slab 14 by rotating the tightening bolts 7 to keep the concrete slab 14 stable and not sliding. At the same time, the electric push rod 5 extends upward and pushes the pressure sensor 16 upward through the first top plate 19, the spring 18 and the second top plate 17 to lift the concrete slab 14 to the bottom end of the roller 12 and continue to push it upward. At this time, the spring 18 is compressed and reaches the pressure value set by the pressure sensor 16, stopping the electric push rod 5 from extending upward. Therefore, it can avoid excessive or insufficient pressure on the concrete slab 14, which may cause errors and inaccuracies in the test results.
[0033] A supporting leg 2 is fixed to the bottom end of the base 1, a supporting frame 8 is fixed to the top end of the base 1 and at positions on both sides of the placement plate 6, a rotating rod 10 is rotatably connected between the two supporting frames 8, a servo motor 9 is fixed to one end of the rotating rod 10, a second guide rod 29 is fixed between the two supporting frames 8 and at positions on both sides of the rotating rod 10, an adjusting plate 26 is installed on the surfaces of the second guide rod 29 and the rotating rod 10, a third connecting hole 27 is opened in the middle of the surface of the adjusting plate 26, the rotating rod 10 passes through the third connecting hole 27, a second guide hole 28 is opened on the surface of the adjusting plate 26 and at positions on both sides of the third connecting hole 27, the second guide rod 29 slides through the second guide hole 28, a mounting frame 25 is fixed to the adjusting plate 26, and the mounting frame 25 A rotating rod 23 is fixed inside, and a roller 12 is rotatably installed on the surface of the rotating rod 23. The roller 12 is pressed against the top of the concrete slab 14, and the rotating rod 10 is driven by the servo motor 9 to rotate forward or reversely, so that the roller 12 moves back and forth along the second guide rod 29 on the top of the concrete slab 14 to roll. When the top of the concrete slab 14 is damaged by the rolling of the roller 12 and the thickness is reduced, the pressure value of the pressure sensor 16 becomes smaller, and the electric push rod 5 can be continuously started to extend upward, and the placement plate 6 and the concrete slab 14 are pushed upward through the first top plate 19, the spring 18 and the second top plate 17. The spring 18 has an outward elastic force, which can keep the placement plate 6 and the concrete slab 14 always under the upward elastic force of the spring 18, so as to avoid the concrete slab 14 being damaged by rolling and the roller 12 being unable to roll the concrete slab after the thickness is reduced.
[0034] The first guide rod 3 is vertically arranged, the placement plate 6 is a rectangular plate structure and is horizontally arranged, the concrete plate 14 is a rectangular plate structure and is horizontally arranged, and the baffle 13 is a rectangular plate structure and is vertically arranged, and its height is not higher than the top of the concrete plate 14.
[0035] The second connecting hole 22 is a threaded rod structure, the tightening bolt 7 is horizontally arranged and threadedly connected to the second connecting hole 22, and drives the tightening plate 11 to rotate and move. The tightening plate 11 is a circular plate structure and is vertically tightened and arranged on the side of the concrete slab 14.
[0036] The connecting tube 15 is a cylindrical structure and is vertically arranged. The electric push rod 5 is vertically telescopically arranged between the base 1 and the placement plate 6. The first connecting hole 21 is a threaded hole structure.
[0037] The first top plate 19 and the second top plate 17 are both circular plates and are horizontally slidably installed inside the connecting tube 15 and are located above the limiting bolt 20 . The spring 18 is compressed and slidably installed inside the connecting tube 15 .
[0038] The support frame 8 is a U-shaped structure and is vertically arranged with its top end horizontal. The rotating rod 10 is a threaded rod structure and is horizontally arranged above the concrete slab 14. The servo motor 9 is installed on the outer top end of the support frame 8. The second guide rod 29 is a cylindrical rod structure and is horizontally arranged.
[0039] The adjustment plate 26 is a rectangular plate structure, the third connection hole 27 is a threaded hole structure, and is threadedly connected to the rotating rod 10, the installation frame 25 is a C-shaped structure, and the top end is horizontally arranged, and its two sides are vertically arranged above the concrete slab 14, the rotating rod 23 is a cylindrical rod structure, and is horizontally arranged, the roller 12 is a cylindrical structure, and is horizontally pressed against the top end of the concrete slab 14, and is rotatably installed and connected to the installation frame 25 through the rotating rod 23.
[0040] Example 2
[0041] See also Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 , Figure 6 , Figure 7 and Figure 8 The electric servo fatigue tester shown in the figure includes a base 1, a first guide hole 4 is opened on the surface of the base 1, a first guide rod 3 slides through the inside of the first guide hole 4, a placement plate 6 is fixed to the top of the first guide rod 3, a concrete slab 14 is placed on the top of the placement plate 6, a baffle 13 is fixed to the top edge of the placement plate 6 and located outside the concrete slab 14, a second connecting hole 22 is opened on the surface of the baffle 13, a tightening bolt 7 passes through the inside of the second connecting hole 22, a tightening plate 11 is fixed to the inner end of the tightening bolt 7, and a connecting bolt 11 is fixed to the bottom end of the placement plate 6 The top of the base 1 is fixed with an electric push rod 5, the top of the electric push rod 5 is inserted into the connecting tube 15, the inner top of the connecting tube 15 and the position at the bottom end of the placing plate 6 is fixed with a pressure sensor 16, the outer bottom end of the connecting tube 15 is provided with a first connecting hole 21, the inner limit bolt 20 of the first connecting hole 21 is disassembled, the top of the electric push rod 5 is fixed with a first top plate 19, the top of the first top plate 19 is connected with a spring 18, the top of the spring 18 is connected with a second top plate 17, and the top of the second top plate 17 is pressed tightly against the bottom end of the pressure sensor 16.
[0042] The concrete slab 14 is placed on the top of the placing plate 6, and the tightening plate 11 is tightened against the side of the concrete slab 14 by rotating the tightening bolts 7 to keep the concrete slab 14 stable and not sliding. At the same time, the electric push rod 5 extends upward and pushes the pressure sensor 16 upward through the first top plate 19, the spring 18 and the second top plate 17 to lift the concrete slab 14 to the bottom end of the roller 12 and continue to push it upward. At this time, the spring 18 is compressed and reaches the pressure value set by the pressure sensor 16, stopping the electric push rod 5 from extending upward. Therefore, it can avoid excessive or insufficient pressure on the concrete slab 14, which may cause errors and inaccuracies in the test results.
[0043] A supporting leg 2 is fixed to the bottom end of the base 1, a supporting frame 8 is fixed to the top of the base 1 and at positions on both sides of the placement plate 6, a rotating rod 10 is rotatably connected between the two supporting frames 8, a servo motor 9 is fixed to one end of the rotating rod 10, a second guide rod 29 is fixed between the two supporting frames 8 and at positions on both sides of the rotating rod 10, an adjusting plate 26 is installed on the surfaces of the second guide rod 29 and the rotating rod 10, a third connecting hole 27 is opened in the middle of the surface of the adjusting plate 26, the rotating rod 10 passes through the third connecting hole 27, a second guide hole 28 is opened on the surface of the adjusting plate 26 and at positions on both sides of the third connecting hole 27, the second guide rod 29 slides through the second guide hole 28, a mounting frame 25 is fixed to the adjusting plate 26, and the mounting frame 25 A rotating rod 23 is fixed inside, and a roller 12 is rotatably installed on the surface of the rotating rod 23. The roller 12 is pressed against the top of the concrete slab 14, and the rotating rod 10 is driven by the servo motor 9 to rotate forward or reversely, so that the roller 12 moves back and forth along the second guide rod 29 on the top of the concrete slab 14 to roll. When the top of the concrete slab 14 is damaged by the rolling of the roller 12 and the thickness is reduced, the pressure value of the pressure sensor 16 becomes smaller, and the electric push rod 5 can be started to extend upward, and the placement plate 6 and the concrete slab 14 are pushed upward through the first top plate 19, the spring 18 and the second top plate 17. The spring 18 has an outward elastic force, which can keep the placement plate 6 and the concrete slab 14 always under the upward elastic force of the spring 18, so as to avoid the roller 12 from rolling the concrete slab 14 after the concrete slab 14 is damaged by rolling and the thickness is reduced.
[0044] The adjustment plate 26 is a rectangular plate structure, the third connection hole 27 is a threaded hole structure, and is threadedly connected to the rotating rod 10, the installation frame 25 is a C-shaped structure, and the top end is horizontally arranged, and its two sides are vertically arranged above the concrete slab 14, the rotating rod 23 is a cylindrical rod structure, and is horizontally arranged, the roller 12 is a cylindrical structure, and is horizontally pressed against the top end of the concrete slab 14, and is rotatably installed and connected to the installation frame 25 through the rotating rod 23.
[0045] A scraper plate 24 is fixed to the inner top of the mounting frame 25. When the roller 12 rolls the top of the concrete slab 14, the bottom end of the scraper plate 24 scrapes the surface of the roller 12 to clean off the adhered concrete debris and residues. The roller 12 is kept clean when rolling different positions of the top of the concrete slab 14 to avoid the concrete slab 14 being subjected to different rolling pressures due to the debris and residues adhered to the surface of the roller 12. Therefore, the accuracy of the fatigue test results of the concrete slab 14 can be improved.
[0046] The scraping plate 24 is a rectangular plate structure and is vertically arranged and located on both sides of the top of the roller 12 , and the bottom end thereof is in scraping contact with the surface of the roller 12 .
[0047] Working method: A first top plate 19, a spring 18 and a second top plate 17 are arranged at the top of the electric push rod 5, and a pressure sensor 16 is installed at the top of the connecting tube 15 at the bottom end of the placing plate 6. Therefore, the concrete plate 14 is placed on the top of the placing plate 6, and the tightening bolt 7 is rotated to tighten the side of the concrete plate 14 with the tightening plate 11, so that the concrete plate 14 is kept stable and does not slide. At the same time, the electric push rod 5 extends upward, and pushes the pressure sensor 16 upward through the first top plate 19, the spring 18 and the second top plate 17, and lifts the concrete plate 14 to the bottom end of the roller 12, and continues to push upward. At this time, the spring 18 is compressed and reaches the pressure value set by the pressure sensor 16, stopping the electric push rod 5 from extending upward, thereby preventing the concrete plate 14 from being damaged. Over-pressure or under-pressure may cause errors and inaccuracies in the test results. Therefore, the servo motor 9 drives the rotating rod 10 to rotate forward or reversely, so that the roller 12 moves back and forth along the second guide rod 29 on the top of the concrete slab 14 and rolls. When the top of the concrete slab 14 is damaged by the rolling of the roller 12 and the thickness is reduced, the pressure value of the pressure sensor 16 becomes smaller, and the electric push rod 5 can be started to extend upward, and the placement plate 6 and the concrete slab 14 are pushed upward through the first top plate 19, the spring 18 and the second top plate 17. The spring 18 has an outward elastic force, which can keep the placement plate 6 and the concrete slab 14 always under the upward elastic force of the spring 18, so as to avoid the concrete slab 14 being damaged by rolling and the roller 12 being unable to roll the concrete slab 14 after the thickness is reduced.
[0048] Scraping plates 24 are arranged inside the mounting frame 25 and on both sides of the top of the roller 12, and the bottom ends of the scraping plates 24 are in scraping contact with the surface of the roller 12. Therefore, in the process of the roller 12 rolling the top of the concrete slab 14, the bottom ends of the scraping plates 24 scrape the surface of the roller 12 to clean off the adhered concrete debris and residues, and the roller 12 surface is kept clean to roll different positions of the top of the concrete slab 14, so as to avoid the concrete slab 14 being subjected to different rolling pressures due to the debris and residues adhered to the surface of the roller 12, thereby improving the accuracy of the fatigue test results of the concrete slab 14.
[0049] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes within the technical scope disclosed by the present invention according to the technical scheme and the utility model concept of the present invention, which should be covered by the protection scope of the present invention.
Claims
1. An electric servo fatigue tester, comprising a base (1), characterized in that: The surface of the base (1) is provided with a first guide hole (4), a first guide rod (3) is slidably passed through the interior of the first guide hole (4), a placement plate (6) is fixed to the top end of the first guide rod (3), a concrete plate (14) is placed on the top end of the placement plate (6), a baffle plate (13) is fixed to the top edge of the placement plate (6) and located outside the concrete plate (14), a second connection hole (22) is provided on the surface of the baffle plate (13), a tightening bolt (7) is passed through the interior of the second connection hole (22), a tightening plate (11) is fixed to the inner end of the tightening bolt (7), a connecting tube (15) is fixed to the bottom end of the placement plate (6), and the base (1) is provided with a first guide hole (4), a first guide rod (3) is slidably passed through the interior of the first guide hole (4), a placement plate (6) is fixed to the top end of the first guide rod (3), a baffle plate (13) is fixed to the bottom end of the placement plate (6), and the base (1) is provided with a first guide hole (4), a first guide rod (3) is slidably passed through the interior of the ... ) is fixed to the top of the electric push rod (5), the top of the electric push rod (5) is inserted into the connecting tube (15), a pressure sensor (16) is fixed at the top of the inner top of the connecting tube (15) and located at the bottom of the placement plate (6), a first connecting hole (21) is opened at the outer bottom end of the connecting tube (15), a disassembly limit bolt (20) is installed inside the first connecting hole (21), a first top plate (19) is fixed to the top of the electric push rod (5), a spring (18) is connected to the top of the first top plate (19), a second top plate (17) is connected to the top of the spring (18), and the top of the second top plate (17) is pressed tightly against the bottom end of the pressure sensor (16).
2. The electric servo fatigue testing machine according to claim 1, characterized in that: A supporting leg (2) is fixed at the bottom end of the base (1), a supporting frame (8) is fixed at the top end of the base (1) and at positions on both sides of the placement plate (6), a rotating rod (10) is rotatably connected between the two supporting frames (8), a servo motor (9) is fixed at one end of the rotating rod (10), a second guide rod (29) is fixed between the two supporting frames (8) and at positions on both sides of the rotating rod (10), an adjustment plate (26) is installed on the surface of the second guide rod (29) and the rotating rod (10), a third connecting hole (27) is opened in the middle of the surface of the adjustment plate (26), and the The rotating rod (10) passes through the third connecting hole (27); second guide holes (28) are formed on the surface of the adjusting plate (26) and at positions on both sides of the third connecting hole (27); the second guide rod (29) slides through the second guide hole (28); a mounting frame (25) is fixed to the adjusting plate (26); a rotating rod (23) is fixed inside the mounting frame (25); a roller (12) is rotatably mounted on the surface of the rotating rod (23); the roller (12) is pressed against the top end of the concrete slab (14); and a scraping plate (24) is fixed to the top end of the mounting frame (25).
3. The electric servo fatigue testing machine according to claim 1, characterized in that: The first guide rod (3) is vertically arranged, the placement plate (6) is a rectangular plate structure and is horizontally arranged, the concrete plate (14) is a rectangular plate structure and is horizontally arranged, and the baffle plate (13) is a rectangular plate structure and is vertically arranged, and its height is not higher than the top of the concrete plate (14).
4. The electric servo fatigue testing machine according to claim 1, characterized in that: The second connection hole (22) is a threaded rod structure, the tightening bolt (7) is horizontally arranged and threadedly connected to the second connection hole (22), and drives the tightening plate (11) to rotate and move, and the tightening plate (11) is a circular plate structure and is vertically tightened and arranged on the side of the concrete plate (14).
5. The electric servo fatigue testing machine according to claim 1, characterized in that: The connecting tube (15) is a cylindrical structure and is vertically arranged. The electric push rod (5) is vertically telescopically arranged between the base (1) and the placement plate (6). The first connecting hole (21) is a threaded hole structure. The limiting bolt (20) is threadedly connected to the first connecting hole (21) and is horizontally inserted into the interior of the connecting tube (15) without contacting the surface of the electric push rod (5).
6. The electric servo fatigue testing machine according to claim 1, characterized in that: The first top plate (19) and the second top plate (17) are both circular plates and are horizontally slidably mounted inside the connecting tube (15) and are located above the limiting bolt (20). The spring (18) is compressed and slidably mounted inside the connecting tube (15).
7. The electric servo fatigue testing machine according to claim 2, characterized in that: The support frame (8) is a U-shaped structure and is arranged vertically with its top end horizontal. The rotating rod (10) is a threaded rod structure and is arranged horizontally above the concrete slab (14). The servo motor (9) is installed at the top end of the outer side of the support frame (8). The second guide rod (29) is a cylindrical rod structure and is arranged horizontally.
8. The electric servo fatigue testing machine according to claim 2, characterized in that: The adjusting plate (26) is a rectangular plate structure, the third connecting hole (27) is a threaded hole structure and is threadedly connected to the rotating rod (10), the mounting frame (25) is a C-shaped structure, the top end is horizontally arranged, and the two sides are vertically arranged above the concrete plate (14), the rotating rod (23) is a cylindrical rod structure and is horizontally arranged, the roller (12) is a cylindrical structure and is horizontally pressed against the top end of the concrete plate (14), and is rotatably installed and connected between the rotating rod (23) and the mounting frame (25), the scraping plate (24) is a rectangular plate structure and is vertically arranged and located on both sides of the top end of the roller (12), and the bottom end thereof is in scraping contact with the surface of the roller (12).