Three-station loading structure of pulse fatigue testing machine

Abstract

The utility model relates to the technical field of pulsating fatigue testing machines, and discloses a three-station loading structure of a pulsating fatigue testing machine, which comprises a base and a pulsating fatigue testing machine main machine, the top end of the base is fixedly connected with a three-station stress application frame, three actuators are arranged on the inner lower side of the three-station stress application frame, and the three actuators are connected with the pulsating fatigue testing machine main machine. A plurality of tool supports are fixedly connected to the top end of the base, an oil separator is fixedly connected to the outer portion of the three-station stress application frame, a steel pipe oil pipe is fixedly connected to the output end of the pulsation fatigue testing machine main machine, and steel rails abut against the top ends of the tool supports. According to the utility model, the oil separator, the steel pipe oil pipe, the pulsation fatigue testing machine main machine, the three-station stress application frame and other structures are matched for use, so that one pulsation fatigue testing machine main machine can drive a plurality of actuators at the same time, and the equipment layout and the use process are greatly simplified.

Description

Technical Field

[0001] The utility model relates to the technical field of pulsating fatigue testing machines, in particular to a three-station loading structure of a pulsating fatigue testing machine. Background Art

[0002] With the rapid expansion of China's high-speed railway network and the increase in train operation speed, the safety and durability of railway rails are particularly crucial. To ensure the quality and reliability of rail weld joints, it is essential to conduct welding fatigue performance tests. These tests usually use 50-ton and 100-ton pulsating fatigue testing machines, which can simulate the dynamic load conditions during train operation. In particular, the 100-ton pulsating fatigue testing machine can drive three 50-ton actuators to conduct fatigue tests on three welded rail specimens respectively. This configuration enables engineers and researchers to effectively evaluate the durability and performance of weld joints in order to design a safer and more durable high-speed railway rail system. Through these test equipment, the stress and strain under real operating conditions can be accurately simulated, thus providing a scientific basis for the reliability and safety of railway engineering. These efforts contribute to ensuring the stable operation of China's high-speed railways and providing a safer and more efficient service for passenger and freight transportation.

[0003] The existing production products are configured with three force application frames. However, they have a large floor area and it is troublesome to arrange hydraulic pipelines, making the aerial oil pipelines messy and complex. To address the above problems, the technical personnel in this field have proposed a three-station loading structure for a pulsating fatigue testing machine to solve the above problems. Summary of the Utility Model

[0004] To make up for the above deficiencies, the utility model provides a three-station loading structure for a pulsating fatigue testing machine, aiming to improve the problem that the existing production products need to be configured with three force application frames.

[0005] To achieve the above object, the utility model provides the following technical solutions:

[0006] A three-station loading structure for a pulsating fatigue testing machine, including a base and a main body of the pulsating fatigue testing machine. A three-station force application frame is fixedly connected to the top end of the base. Three actuators are installed on the inner lower side of the three-station force application frame. A plurality of tooling supports are fixedly connected to the top end of the base. An oil distributor is fixedly connected to the outside of the three-station force application frame. A steel pipe oil pipeline is fixedly connected to the output end of the main body of the pulsating fatigue testing machine. Rails are abutted against the top ends of the plurality of tooling supports.

[0007] Further, the main body of the pulsating fatigue testing machine is powered by an external device.

[0008] Further, a controller is arranged outside the main body of the pulsating fatigue testing machine.

[0009] Further, the three actuators are equidistantly arranged.

[0010] Further, the multiple tooling supports are equidistantly arranged.

[0011] Further, the base is made of heavy-duty steel material.

[0012] Further, the three-station force amplifier is made of high-strength metal material.

[0013] The utility model has the following beneficial effects:

[0014] In the utility model, through the mutual cooperation of structures such as an oil distributor, steel pipe oil pipelines, the main body of a pulsating fatigue testing machine, and a three-station force amplifier, a single main body of a pulsating fatigue testing machine can drive multiple actuators simultaneously, greatly simplifying the equipment layout and operation process. Moreover, the optimized design effectively reduces the floor area of the equipment and simplifies the complex layout of oil pipelines, making it cleaner and more efficient. Furthermore, the usage efficiency of the testing equipment is improved, and the requirement for laboratory space is significantly reduced. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 is a plan view of a three-station loading structure of a pulsating fatigue testing machine proposed by the utility model;

[0016] Figure 2 is a schematic structural view of a tooling support of a three-station loading structure of a pulsating fatigue testing machine proposed by the utility model.

[0017] LEGEND DESCRIPTION:

[0018] 1. Base; 2. Three-station force amplifier; 3. Actuator; 4. Tooling support; 5. Oil distributor; 6. Steel pipe oil pipelines; 7. Main body of a pulsating fatigue testing machine; 8. Rail. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0019] The following will clearly and completely describe the technical solutions in the embodiments of the utility model with reference to the accompanying drawings in the embodiments of the utility model. Obviously, the described embodiments are only a part of the embodiments of the utility model, rather than all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the utility model.

[0020] Refer to Figure 1 and Figure 2, An embodiment provided by the present utility model: a three-station loading structure of a pulsating fatigue testing machine, including a base 1 and a pulsating fatigue testing machine main unit 7. The base 1 is made of heavy steel material, and the pulsating fatigue testing machine main unit 7 is powered by an external device. A controller is provided outside the pulsating fatigue testing machine main unit 7. A three-station force-applying frame 2 is fixedly connected to the top end of the base 1, and the three-station force-applying frame 2 is made of high-strength metal material.

[0021] Specifically, the base 1 is made of heavy steel material, ensuring the stability and load-bearing capacity of the entire testing machine. The heavy steel material can effectively reduce vibration and displacement, thus ensuring the accuracy and reliability of the test process. Through the pulsating fatigue testing machine main unit 7, an external device can be connected, and a controller is also provided, making the operation of the test process more intuitive and convenient, and enabling more flexible management of the test process and recording of experimental data. The three-station force-applying frame 2 is made of high-strength metal material to withstand the dynamic loading and repeated stresses during the test. The high-strength metal material has excellent tensile strength and fatigue resistance, ensuring the stability and safety of the force-applying frame during long-term tests.

[0022] Refer to Figure 1 and Figure 2 , Three actuators 3 are installed on the inner lower side of the three-station force-applying frame 2. The three actuators 3 are arranged at equal distances. A plurality of tooling supports 4 are fixedly connected to the top end of the base 1, and the plurality of tooling supports 4 are arranged at equal distances.

[0023] Specifically, by arranging the actuators 3 at equal distances in the structure of the three-station force-applying frame 2, the repeatability and accuracy of the test results are ensured. By arranging the tooling supports 4 at equal distances, the load distribution on each tooling support 4 during the test is ensured to be uniform, thus guaranteeing the reliability of the test and the consistency of the results.

[0024] Refer to Figure 1 and Figure 2 , An oil distributor 5 is fixedly connected to the outside of the three-station force-applying frame 2. A steel pipe oil pipe 6 is fixedly connected to the output end of the pulsating fatigue testing machine main unit 7. The top ends of the plurality of tooling supports 4 abut against a steel rail 8.

[0025] Specifically, through the oil distributor 5, hydraulic oil can be distributed to each actuator 3 to ensure their normal operation and the application of the required force or displacement, thereby ensuring that each actuator 3 obtains the same working fluid to guarantee the accuracy and reliability of the test. By fixedly connecting a steel pipe oil pipe 6 to the output end of the pulsating fatigue testing machine main unit 7, the pulsating fatigue testing machine main unit 7 can stably transport hydraulic oil into the actuator 3 through the steel pipe oil pipe 6. The tooling supports 4 can carry the steel rail 8.

[0026] Working principle: It is installed on the tooling support 4 through the steel rail 8, and receives the force from the actuator 3. Through the main body 7 of the pulsating fatigue testing machine, the oil distributor 5 and the steel pipe oil pipe 6, it can ensure that the actuator 3 can accurately control the applied force. Then, through the main body 7 of the pulsating fatigue testing machine, the whole test process is controlled and monitored, and the test data is recorded and analyzed for evaluating the engineering characteristics such as the fatigue life, strength and durability of materials or components.

[0027] Finally, it should be noted that the above are only the preferred embodiments of the present utility model and are not used to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, for those skilled in the art, they can still modify the technical solutions recorded in the foregoing embodiments, or perform equivalent replacements for some of the technical features. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present utility model shall be included within the protection scope of the present utility model.

Claims

1. Three-station loading structure of a pulsating fatigue testing machine, comprising a base (1) and a main body of the pulsating fatigue testing machine (7), characterized in that: At the top of the base (1), a three-station force intensifier (2) is fixedly connected. At the inner lower side of the three-station force intensifier (2), three actuators (3) are installed. At the top of the base (1), a plurality of tooling supports (4) are fixedly connected. At the outside of the three-station force intensifier (2), an oil distributor (5) is fixedly connected. At the output end of the pulsating fatigue testing machine mainframe (7), a steel pipe oil pipe (6) is fixedly connected. At the top of the plurality of tooling supports (4), a steel rail (8) abuts.

2. The three-station loading structure of the pulsating fatigue testing machine according to claim 1, characterized in that: The pulsating fatigue testing machine mainframe (7) is powered by an external device.

3. The three-station loading structure of the pulsating fatigue testing machine according to claim 1, wherein: A controller is provided outside the pulsating fatigue testing machine mainframe (7).

4. The three-station loading structure of the pulsating fatigue testing machine according to claim 1, wherein: The three actuators (3) are arranged at equal intervals.

5. The three-station loading structure of the pulsating fatigue testing machine according to claim 1, wherein: The plurality of tooling supports (4) are arranged at equal intervals.

6. The three-station loading structure of the pulsating fatigue testing machine according to claim 1, wherein: The base (1) is made of heavy steel material.

7. The three-station loading structure of the pulsating fatigue testing machine according to claim 1, characterized in that: The three-station force intensifier (2) is made of high-strength metal material.

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