A large-tonnage three-channel coordinated loading testing machine

Abstract

This utility model relates to the field of coordinated loading testing machines, and discloses a large-tonnage three-channel coordinated loading testing machine, including two columns, an upper crossbeam, and a lower crossbeam. The upper crossbeam is fixed at the upper end of one of the two columns on opposite sides, and the lower crossbeam is fixed at the lower end of one of the two columns on opposite sides. An X-axis actuator for lateral testing is installed at the lower end of one side of each of the two columns, and a Y-axis actuator for vertical testing is installed on the upper crossbeam. A mounting plate is fixedly installed at the rear end of each of the two columns, and a Z-axis actuator for longitudinal testing is installed on the mounting plate. A sample is fixedly mounted on the upper end of the lower crossbeam by bolts. This utility model can realize loading tests with individual actuators, as well as coordinated loading with multiple actuators, breaking through the limitations of multi-axis load coordinated control and multi-field coupled loading, and realizing simulation tests of three-point working conditions.

Description

Technical Field

[0001] This utility model relates to the field of coordinated loading testing machines, and in particular to a large-tonnage three-channel coordinated loading testing machine. Background Technology

[0002] With the rapid development of modern industrial technology, engineering structures (such as aerospace vehicles, new energy vehicles, and large bridges) face increasingly complex service environments. Materials and components need to withstand multiaxial dynamic loads (such as combined tension-compression-torsion), multi-physics field coupling, and the synergistic effect of random impact loads.

[0003] In the process of realizing this application, the inventors discovered the following problems with the prior art: Traditional uniaxial or static loading testing machines have limited load forms and simple environmental simulations, making it difficult to truly reproduce actual working conditions, resulting in significant deviations in material performance evaluation; since they can only apply loads in a single direction, they cannot simulate multiaxial stress states (such as planar biaxial and triaxial compression), leading to distortions in the verification of material constitutive models and failure criteria.

[0004] Therefore, those skilled in the art have provided a large-tonnage three-channel coordinated loading testing machine to solve the problems mentioned in the background art. Utility Model Content

[0005] The purpose of this invention is to address the shortcomings of existing technologies by proposing a large-tonnage three-channel coordinated loading test machine that can perform loading tests with individual actuators or with multiple actuators in coordination. It breaks through the limitations of multi-axis load coordination control and multi-field coupling loading, and realizes simulation tests of three-point working conditions.

[0006] To achieve the above objectives, the present invention provides the following technical solution:

[0007] A large-tonnage three-channel coordinated loading testing machine includes two columns, an upper crossbeam, and a lower crossbeam. The upper crossbeam is fixed at the upper end of one of the two columns on opposite sides, and the lower crossbeam is fixed at the lower end of one of the two columns on opposite sides. An X-axis actuator for transverse testing is installed at the lower end of one side of each of the two columns. A Y-axis actuator for vertical testing is installed on the upper crossbeam. A mounting plate is fixedly installed at the rear end of each of the two columns, and a Z-axis actuator for longitudinal testing is installed on the mounting plate. A sample is fixedly mounted on the upper end of the lower crossbeam by bolts.

[0008] The X-axis actuator, Y-axis actuator, and Z-axis actuator all adopt a hydraulic cylinder drive structure, which specifically includes a cylinder, a piston installed inside the cylinder, a seal located between the outer wall of the piston and the cylinder, and a hysteresis displacement sensor located at the end of the piston. The upper and lower ends of the X-axis actuator, Y-axis actuator, and Z-axis actuator are all equipped with actuator ball joints that can realize steering adjustment, and one end of the actuator ball joint is fixed to the column, the upper crossbeam, and the mounting plate, respectively.

[0009] Furthermore, it also includes a control cabinet for controlling the drive, a sub-distribution station assembly connected to the control cabinet, a fatigue machine silent oil source host for realizing hydraulic oil supply, and an air-cooled chiller connected to the fatigue machine silent oil source host for heat dissipation, and a power distribution cabinet is also provided on one side of the air-cooled chiller for system power supply.

[0010] Furthermore, all of the aforementioned hysteresis displacement sensors are electrically connected to the control cabinet, and the fatigue machine silent oil source host is connected to an air-cooled chiller via a pipeline assembly.

[0011] Furthermore, the X-axis actuator is located on the side of the sample, the Y-axis actuator is located at the top of the sample, and the Z-axis actuator is located at the rear end of the sample.

[0012] Furthermore, a hoist mounting rod is fixedly mounted on the mounting plate, and a hoist tie rod is fixedly mounted on the hoist mounting rod. The Z-axis actuator is connected to the mounting plate through an actuator ball joint installed at the rear end.

[0013] Furthermore, reinforcing ribs are fixedly installed at the corners where the two columns and the upper crossbeam connect, and a hand-operated hoist is fixedly installed at the lower end of one of the two reinforcing ribs. Side support frames are fixedly installed at the front and rear ends of the lower sides of the two columns, and the two columns are fixed to the ground by multiple bolts.

[0014] Furthermore, the upper end of the actuator ball joint on the upper surface of the Y-axis actuator is fixedly provided with a fixing plate, and the upper end of the fixing plate is equipped with a connecting plate by multiple long bolts. The fixing plate, multiple long screws and the connecting plate are hoisted and fixed on the upper crossbeam.

[0015] Furthermore, the actuator ball joint includes a pressure plate, and supports are fixedly provided on both sides of the upper surface of the pressure plate. A hinge pin is rotatably provided between the two supports, and a ball joint is fixedly sleeved on the outside of the hinge pin.

[0016] Furthermore, one end of the hinge pin passes through the outer wall of one side of the support and is internally threaded with a locking nut.

[0017] Furthermore, the two columns and the upper crossbeam are combined to form a gantry structure, and both ends of the upper crossbeam are fixedly connected to the columns by multiple hexagonal head screws.

[0018] This utility model has the following beneficial effects:

[0019] 1. This utility model proposes a large-tonnage three-channel coordinated loading testing machine. This equipment is powerful in function. By setting three sets of actuators, the three sets of actuators correspond to the transverse, vertical and longitudinal directions respectively. The three sets of actuators can perform loading tests individually or in coordination. Among them, the Y and Z actuators of this equipment can adjust their height and position in the test space as needed, so as to adapt to various specimens. Moreover, this testing machine has high rigidity, and the overall frame deformation is small under maximum load. This equipment can perform both static and dynamic tests and can realize the loading of sine waves, triangle waves, square waves and other waveforms. Attached Figure Description

[0020] Figure 1 This is a front view structural diagram of the present utility model;

[0021] Figure 2 This is a top view of the structure of this utility model;

[0022] Figure 3 This is a schematic diagram of the axial side structure of this utility model;

[0023] Figure 4 For the present utility model Figure 3 A schematic diagram of a partial structure;

[0024] Figure 5 This is a partial cross-sectional view of the present invention.

[0025] Figure 6 This is a schematic diagram of the actuator ball joint of this utility model.

[0026] Legend:

[0027] 1. Air-cooled chiller; 2. Distribution cabinet; 3. Column; 4. Upper crossbeam; 5. Hoist mounting rod; 6. Y-axis actuator; 7. Hand chain hoist; 8. Reinforcing rib; 9. Socket head cap screw; 10. X-axis actuator; 11. Lower crossbeam; 12. Control cabinet; 13. Piping assembly; 14. Sample; 15. Actuator ball joint; 1501. Ball joint; 1502. Hinge pin; 1503. Support; 1504. Locking nut; 1505. Pressure plate; 16. Silent oil source main unit for fatigue machine; 17. Hoist pull rod; 18. Z-axis actuator; 19. Sub-distribution station assembly; 20. Side support frame; 21. Hysteresis displacement sensor; 22. Piston; 23. Seal; 24. Cylinder. Detailed Implementation

[0028] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0029] Reference Figures 1-5 An embodiment of this utility model is provided: a large-tonnage three-channel coordinated loading test machine, including two columns 3, an upper crossbeam 4 and a lower crossbeam 11. The upper crossbeam 4 is fixed at the upper end of the opposite side of the two columns 3, and the lower crossbeam 11 is fixed at the lower end of the opposite side of the two columns 3. An X-axis actuator 10 for transverse testing is installed at the lower end of one side of the two columns 3. A Y-axis actuator 6 for vertical testing is installed on the upper crossbeam 4. An installation plate is fixedly provided at the rear end of the two columns 3, and a Z-axis actuator 18 for longitudinal testing is installed on the installation plate. A sample 14 is fixedly provided at the upper end of the lower crossbeam 11 by bolts.

[0030] The X-axis actuator 10, Y-axis actuator 6, and Z-axis actuator 18 all adopt a hydraulic cylinder drive structure, which specifically includes a cylinder 24, a piston 22 installed inside the cylinder 24, a seal 23 located between the outer wall of the piston 22 and the cylinder 24, and a hysteresis displacement sensor 21 located at the end of the piston 22. The upper and lower ends of the X-axis actuator 10, Y-axis actuator 6, and Z-axis actuator 18 are equipped with actuator ball joints 15 that can realize steering adjustment, and one end of the actuator ball joint 15 is fixed to the column 3, the upper crossbeam 4, and the mounting plate, respectively.

[0031] Specifically, when testing the specimen 14, the X-axis actuator 10, Y-axis actuator 6, or Z-axis actuator 18 are activated according to the actual required test direction to load the specimen 14. Since the specimen 14 is fixed on the lower crossbeam 11, the specimen 14 will not move during the loading test. That is, when the X-axis actuator 10 loads the specimen 14 to the left, it will continuously approach the specimen 14 and adhere to the outer wall of the specimen 14 to load it, thus realizing a single-sided extrusion loading test.

[0032] The X-axis actuator 10 and the Y-axis actuator 6 can also be activated simultaneously. The X-axis actuator 10 compresses the outer wall of the right side of the specimen 14, and the Y-axis actuator 6 compresses the outer wall of the upper end of the specimen 14 to achieve a planar biaxial stress compression loading test. When the X-axis actuator 10, the Y-axis actuator 6, or the Z-axis actuator 18 move together, the actuator ball joint 15 of one of the actuators near the specimen 14 is tilted and adjusted. At this time, the contact surface between the actuator ball joint 15 at the front end of the actuator and the specimen 14 is inclined and push-type, which produces a linkage effect similar to torsion-compression, thereby realizing the multiaxial dynamic load loading test function.

[0033] Reference Figures 1-3 It also includes a control cabinet 12 for controlling the drive, a sub-distribution station assembly 19 connected to the control cabinet 12, a fatigue machine silent oil source host 16 for realizing hydraulic oil supply, and an air-cooled chiller 1 connected to the fatigue machine silent oil source host 16 for heat dissipation. A power distribution cabinet 2 is also provided on one side of the air-cooled chiller 1 for system power supply. Multiple hysteresis displacement sensors 21 are electrically connected to the control cabinet 12. The fatigue machine silent oil source host 16 is connected to the air-cooled chiller 1 on one side through a pipeline assembly 13.

[0034] Specifically, first, the positions of the three actuators are adjusted. After placing the sample 14 in a suitable position, the actuators are controlled by the control cabinet 12. The position of the actuators is adjusted to be about 3mm away from the sample 14. Then, the test plan is controlled by the control cabinet 12, and the force value is cleared to zero. Then, the test can be started. The motion status of the actuators, including displacement, applied force and other data, will be transmitted to the control cabinet 12 for recording and display, so as to obtain data information in real time. The fatigue machine silent oil source host 16 is connected to the three actuators through the sub-distribution station component 19 to realize the delivery and use of hydraulic oil. The air-cooled chiller 1 is used for heat dissipation.

[0035] Reference Figures 1-4 The X-axis actuator 10 is located on the side of the sample 14, the Y-axis actuator 6 is located at the upper end of the sample 14, and the Z-axis actuator 18 is located at the rear end of the sample 14. A hoist mounting rod 5 is fixedly installed on the mounting plate, and a hoist pull rod 17 is fixedly installed on the hoist mounting rod 5. The Z-axis actuator 18 is connected to the mounting plate through the actuator ball joint 15 installed at the rear end. A fixing plate is fixedly installed on the upper end of the actuator ball joint 15 on the upper end of the Y-axis actuator 6, and a connecting plate is installed on the upper end of the fixing plate through multiple long bolts. The fixing plate, multiple long screws and the connecting plate are hoisted and fixed on the upper crossbeam 4.

[0036] Specifically, three actuators are set in three positions, and the directions of the force exerted by the three actuators are transverse-vertical and longitudinal. When the three actuators are activated at the same time, a linkage compression loading test can be performed on the three sides of the sample 14. The actuators are installed and fixed by multiple bolts, which can facilitate quick disassembly and maintenance, as well as quick position adjustment.

[0037] Reference Figures 1-4 At the corner where the two columns 3 and the upper beam 4 are connected, there are still reinforcing ribs 8 fixedly installed. A hand chain hoist 7 is fixedly installed at the lower end of one of the two reinforcing ribs 8. Side support frames 20 are fixedly installed at the front and rear ends of the lower side of the two columns 3. The two columns 3 are fixed to the ground by multiple bolts.

[0038] Specifically, diagonal reinforcing ribs 8 are added between the upper crossbeam 4 and the column 3 to make the connection more secure, while providing a more stable support for the upper crossbeam 4, greatly improving the stability of the entire equipment; and the side support frames 20 at the front and rear ends of the column 3 can prevent the column from tilting forward or backward and collapsing.

[0039] Reference Figure 5 The actuator ball joint 15 includes a pressure plate 1505. Supports 1503 are fixedly provided on both sides of the upper end face of the pressure plate 1505. A hinge pin 1502 is rotatably provided between the two supports 1503, and a ball joint seat 1501 is fixedly sleeved on the outside of the hinge pin 1502.

[0040] Specifically, the upper end of the ball joint seat 1501 is connected to the actuator, while the lower end of the pressure plate 1505 contacts the outer wall of the sample 14 during use. Since the pressure plate 1505 is fixed on the support 1503, and the support 1503 can rotate along the inner hinge pin 1502, the required angle can be adjusted as needed, so that the lower surface of the pressure plate 1505 fits better with the outer wall of the sample 14, thereby avoiding accidental slippage during compression loading and improving stability.

[0041] Reference Figure 5 The hinge pin 1502 has one end that passes through the outer wall of the support 1503 on one side and is internally threaded with a locking nut 1504.

[0042] Specifically, after the support 1503 rotates along the outer wall of the hinge pin 1502 to the required angle position, the hinge pin 1502 is tightened and fixed by turning the locking nut 1504 so that it no longer rotates, thereby achieving the angle fixing effect after angle adjustment.

[0043] Reference Figures 1-4 The two columns 3 and the upper crossbeam 4 are combined to form a gantry structure, and both ends of the upper crossbeam 4 are fixedly connected to the columns 3 by multiple hexagonal head screws 9.

[0044] Specifically, multiple hexagonal head screws 9 are used to connect and fix the upper crossbeam 4 to the column 3.

[0045] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A large-tonnage three-channel coordinated loading testing machine, comprising two columns (3), an upper crossbeam (4) and a lower crossbeam (11), characterized in that: The upper crossbeam (4) is fixed at the upper end of the opposite side of the two columns (3), and the lower crossbeam (11) is fixed at the lower end of the opposite side of the two columns (3). An X-axis actuator (10) for transverse testing is installed at the lower end of one side of the two columns (3). A Y-axis actuator (6) for vertical testing is installed on the upper crossbeam (4). A mounting plate is fixedly installed at the rear end of the two columns (3), and a Z-axis actuator (18) for longitudinal testing is installed on the mounting plate. A sample (14) is fixedly installed at the upper end of the lower crossbeam (11) by bolts. The X-axis actuator (10), Y-axis actuator (6) and Z-axis actuator (18) all adopt a hydraulic cylinder drive structure, which specifically includes a cylinder (24), a piston (22) installed inside the cylinder (24), a seal (23) located between the outer wall of the piston (22) and the cylinder (24), and a hysteresis displacement sensor (21) located at the end of the piston (22). The X-axis actuator (10), Y-axis actuator (6) and Z-axis actuator (18) are equipped with actuator ball joints (15) that can realize steering adjustment at both ends, and one end of the actuator ball joint (15) is fixed to the column (3), the upper crossbeam (4) and the mounting plate respectively.

2. The large-tonnage three-channel coordinated loading testing machine according to claim 1, characterized in that: It also includes a control cabinet (12) for controlling the drive, a sub-distribution station assembly (19) connected to the control cabinet (12), a fatigue machine silent oil source host (16) for realizing hydraulic oil supply, and an air-cooled chiller (1) connected to the fatigue machine silent oil source host (16) for heat dissipation. A power distribution cabinet (2) is also provided on one side of the air-cooled chiller (1) for system power supply.

3. The large-tonnage three-channel coordinated loading testing machine according to claim 2, characterized in that: Multiple hysteresis displacement sensors (21) are electrically connected to the control cabinet (12), and the fatigue machine silent oil source host (16) is connected to the air-cooled chiller (1) through the pipeline assembly (13).

4. The large-tonnage three-channel coordinated loading testing machine according to claim 1, characterized in that: The X-axis actuator (10) is located on the side of the sample (14), the Y-axis actuator (6) is located at the upper end of the sample (14), and the Z-axis actuator (18) is located at the rear end of the sample (14).

5. The large-tonnage three-channel coordinated loading testing machine according to claim 1, characterized in that: The mounting plate is fixedly mounted with a hoist mounting rod (5) and a hoist pull rod (17) is fixedly mounted on the hoist mounting rod (5). The Z-axis actuator (18) is connected to the mounting plate through the actuator ball joint (15) installed at the rear end.

6. The large-tonnage three-channel coordinated loading testing machine according to claim 1, characterized in that: At the corner where the two columns (3) and the upper beam (4) are connected, there are still fixed reinforcing ribs (8). A hand-operated hoist (7) is fixedly installed at the lower end of one of the two reinforcing ribs (8). Side support frames (20) are fixedly installed at the front and rear ends of the lower side of the two columns (3). The two columns (3) are fixed to the ground by multiple bolts.

7. The large-tonnage three-channel coordinated loading testing machine according to claim 1, characterized in that: The upper end of the actuator ball joint (15) of the Y-axis actuator (6) is fixedly provided with a fixing plate, and the upper end of the fixing plate is installed with a connecting plate by multiple long bolts. The fixing plate, multiple long screws and the connecting plate are hoisted and fixed on the upper crossbeam (4).

8. The large-tonnage three-channel coordinated loading testing machine according to claim 1, characterized in that: The actuator ball joint (15) includes a pressure plate (1505), and supports (1503) are fixedly provided on both sides of the upper end face of the pressure plate (1505). A hinge pin (1502) is rotatably provided between the two supports (1503), and a ball joint seat (1501) is fixedly sleeved on the outside of the hinge pin (1502).

9. A large-tonnage three-channel coordinated loading testing machine according to claim 8, characterized in that: The hinge pin (1502) has one end that passes through the outer wall of the support (1503) on one side and is internally threaded with a locking nut (1504).

10. A large-tonnage three-channel coordinated loading testing machine according to claim 1, characterized in that: The two columns (3) and the upper beam (4) are combined to form a gantry structure, and both ends of the upper beam (4) are fixedly connected to the columns (3) by multiple hexagonal head screws (9).

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