Spring pressure fatigue testing machine

Abstract

The utility model belongs to the technical field of testing machines, and particularly relates to a spring pressure fatigue testing machine which comprises a machine frame, a working table is fixedly installed on the machine frame, a positioning column is in threaded connection with the working table, a positioning air cylinder is fixedly installed on one side of the top of the machine frame, and the telescopic end of the positioning air cylinder is fixedly connected with a connecting rod. One end of the connecting rod is fixedly connected with a mounting plate, a reciprocating air cylinder is fixedly mounted on the mounting plate, the output end of the reciprocating air cylinder is fixedly connected with a mounting frame, a pressing plate is mounted in the mounting frame through bolts, meanwhile, pressing holes are formed in the mounting frame and the pressing plate, and a sliding block is fixedly connected to the side edge of the mounting plate. The sliding block is connected to the guide rod in a sliding mode. According to the utility model, through the synergistic effect of all parts, accurate, stable and reliable pressure fatigue tests can be carried out on springs with different specifications and shapes, various test requirements are met, the test efficiency and accuracy are improved, and the quality of the springs and the reliability of performance evaluation are ensured.

Description

Technical Field

[0001] The utility model relates to the technical field of testing machines, in particular to a spring pressure fatigue testing machine. Background Art

[0002] Springs are widely used in many industrial fields and daily life, such as automotive suspension systems, mechanical components, electronic devices, etc. However, during long-term use, springs are subjected to repeated pressure, which may lead to fatigue failure. To ensure the quality and reliability of springs, it is necessary to conduct pressure fatigue tests on them.

[0003] Traditional spring pressure fatigue testing methods often have many deficiencies. For example, the testing equipment is not precise enough to simulate real usage scenarios and pressure changes; or the operation is complex and inefficient, unable to meet the needs of large-scale production and quality inspection. In addition, some testing equipment has poor versatility and cannot adapt to different specifications and types of springs, increasing the testing cost and time.

[0004] Therefore, to overcome these problems and improve the accuracy, efficiency, and versatility of spring pressure fatigue testing, it is particularly important to design a new type of spring pressure fatigue testing machine. This new type of testing machine aims to more realistically simulate the pressure changes of springs during actual use, and at the same time has the advantages of simple operation, high precision, and wide application range, thus providing a more reliable basis for the quality inspection and performance evaluation of springs. Content of the Utility Model

[0005] (1) Technical Problems to be Solved

[0006] In view of the deficiencies of the prior art, the utility model provides a spring pressure fatigue testing machine, which solves the problems put forward in the above background art.

[0007] (2) Technical Solutions

[0008] The utility model specifically adopts the following technical solutions to achieve the above purposes:

[0009] A spring pressure fatigue testing machine includes a frame. A workbench is fixedly installed on the frame. A positioning column is threadedly connected to the workbench. A positioning cylinder is fixedly installed on one side of the top of the frame. The telescopic end of the positioning cylinder is fixedly connected to a connecting rod. One end of the connecting rod is fixedly connected to a mounting plate. A reciprocating cylinder is fixedly installed on the mounting plate. The output end of the reciprocating cylinder is fixedly connected to a mounting frame. A pressing plate is bolted inside the mounting frame. At the same time, pressing holes are provided on both the mounting frame and the pressing plate. A slider is fixedly connected to the side of the mounting plate. The slider is slidably connected to a guide rod. A positioning rod is fixedly installed on the mounting frame.

[0010] Further, the positioning posts can be disassembled, replaced, and have different diameters. There are two positioning posts in the same group.

[0011] Further, the pressing holes on the mounting frame have the largest diameter, and the diameter of the pressing holes on the pressing plate changes with the replacement of the pressing plate.

[0012] Further, the diameters of the positioning posts are adapted to the pressing holes on the pressing plate, so that the edge of the pressing plate contacts the spring.

[0013] Further, the guide rod is fixedly installed on the top of the frame.

[0014] Further, four positioning rods are distributed and installed, and the positioning rods are slidably limited to the mounting plate.

[0015] (III) Beneficial Effects

[0016] Compared with the prior art, the present utility model provides a spring pressure fatigue testing machine, which has the following

[0017] beneficial effects:

[0018] With the present utility model, through the coordinated action of various components, accurate, stable, and reliable pressure fatigue tests can be carried out on springs of different specifications and shapes, meeting various test requirements, improving test efficiency and accuracy, and ensuring the reliability of spring quality and performance evaluation. Description of the Drawings

[0019] Figure 1 is a schematic structural diagram of the present utility model;

[0020] Figure 2 is a schematic side view structural diagram of the present utility model;

[0021] Figure 3 is a schematic top view structural diagram of the present utility model;

[0022] Figure 4 is a schematic structural diagram of the connection between the mounting frame and the pressing plate of the present utility model.

[0023] In the figure: 1, frame; 2, workbench; 3, positioning post; 4, positioning cylinder; 5, connecting rod; 6, mounting plate; 7, reciprocating cylinder; 8, mounting frame; 9, pressing plate; 10, slider; 11, guide rod; 12, pressing hole; 13, positioning rod. Detailed Embodiments

[0024] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0025] Embodiment

[0026] As Figures 1-4 shown, a spring pressure fatigue testing machine proposed in an embodiment of the present invention includes a frame 1, a workbench 2 is fixedly installed on the frame 1, a positioning column 3 is threadedly connected to the workbench 2, a positioning cylinder 4 is fixedly installed on one side of the top of the frame 1, a connecting rod 5 is fixedly connected to the telescopic end of the positioning cylinder 4, one end of the connecting rod 5 is fixedly connected to a mounting plate 6, a reciprocating cylinder 7 is fixedly installed on the mounting plate 6, an output end of the reciprocating cylinder 7 is fixedly connected to a mounting frame 8, a pressing plate 9 is bolted inside the mounting frame 8, and pressing holes 12 are provided on both the mounting frame 8 and the pressing plate 9. A slider 10 is fixedly connected to a side of the mounting plate 6, the slider 10 is slidably connected to a guide rod 11, and a positioning rod 13 is fixedly installed on the mounting frame 8;

[0027] Frame 1: As the support structure of the entire testing machine, it provides an installation basis for other components and ensures the stability of the testing machine.

[0028] Workbench 2: Provides a plane for placing the spring to be tested and installing the positioning column 3.

[0029] Positioning column 3: Threadedly connected to the workbench 2, it can be disassembled and replaced and has different diameters. There are two in each group, which are used to position and fix the spring to ensure the accurate position of the spring during the test.

[0030] Positioning cylinder 4: Fixed on one side of the top of the frame 1, its telescopic end is connected to the mounting plate 6 through the connecting rod 5, and provides power for the movement of the mounting plate 6.

[0031] Mounting plate 6: Serves as the installation carrier for components such as the reciprocating cylinder 7 and the slider 10.

[0032] Reciprocating cylinder 7: Installed on the mounting plate 6, its output end is connected to the mounting frame 8, and is used to push the mounting frame 8 to perform reciprocating motion, thereby applying pressure to the spring.

[0033] Mounting frame 8: The pressing plate 9 is bolted inside it and is connected to the output end of the reciprocating cylinder 7, driving the pressing plate 9 to press the spring.

[0034] Pressing plate 9: It is installed in the installation frame through bolts. The diameter of its pressing hole 12 changes with replacement, contacts the spring and applies pressure.

[0035] Slider 10: Fixed on the side of the mounting plate 6, slidably connected to the guide rod 11 to ensure the smoothness and linearity of the movement of the mounting plate 6.

[0036] Guide rod 11: Fixed on the top of the machine frame 1, providing guidance for the sliding of the slider 10.

[0037] Pressing hole 12: Set on the mounting frame and the pressing plate 9, used to accommodate the spring and enable the pressing plate 9 to accurately contact the spring.

[0038] Positioning rod 13: Fixed on the mounting frame 8, there are four of them, slidingly limiting the mounting plate 6, restricting the movement range of the mounting frame 8, and ensuring the accuracy and stability of its movement.

[0039] The working principle is as follows:

[0040] First, place the spring to be tested on the workbench 2, and position and fix the spring through the positioning column 3 with a suitable diameter to ensure that the spring does not displace during the test.

[0041] Then, start the positioning cylinder 4. The telescopic end of the positioning cylinder 4 pushes the mounting plate 6 to move through the connecting rod 5, so that the reciprocating cylinder 7, the mounting frame 8 and the pressing plate 9 on the mounting plate 6 move as a whole to a suitable position.

[0042] Next, the reciprocating cylinder 7 starts to work, and its output end pushes the mounting frame 8 and the pressing plate 9 towards the spring. Since the pressing holes 12 are provided on both the mounting frame 8 and the pressing plate 9, and the positioning column 3 passes through the pressing holes 12, the edge of the pressing plate 9 can contact the spring.

[0043] Under the action of the reciprocating cylinder 7, the pressing plate 9 performs repeated compression and release actions on the spring, simulating the pressure changes that the spring receives during actual use.

[0044] During the whole process, the slider 10 on the side of the mounting plate 6 slides on the guide rod 11 to ensure the smoothness and accuracy of the movement of the mounting plate 6 and the components connected thereto. At the same time, the positioning rod 13 on the mounting frame 8 is slidably limited to the mounting plate 6 to ensure that the movement of the mounting frame 8 is within the specified range, preventing deviation, thereby ensuring the stability and reliability of the test. Through such repeated pressure loading, the fatigue performance of the spring is tested.

[0045] Such as Figure 1As shown, in some embodiments, the positioning posts 3 can be disassembled and replaced. The diameters of the positioning posts 3 are different, and there are two positioning posts 3 in the same group. It is possible to select a positioning post 3 with a suitable diameter according to springs of different sizes and shapes, improving the adaptability of the testing machine to springs of different specifications.

[0046] As Figure 3 shown, in some embodiments, the pressing holes 12 on the installation frame 8 have the largest diameter, and the diameters of the pressing holes 12 on the pressing plate 9 change with the replacement of the pressing plate 9; the diameters of the pressing holes 12 on the pressing plate 9 change with the replacement of the pressing plate 9, enabling the selection of a pressing plate 9 with a corresponding pressing hole 12 diameter according to springs of different diameters. For example, when testing a thicker spring, replace it with a pressing plate 9 with a larger pressing hole 12 diameter; when testing a thinner spring, select a pressing plate 9 with a smaller pressing hole 12 diameter, thus better adapting to springs of different specifications and ensuring the accuracy and effectiveness of the test.

[0047] As Figure 3 shown, in some embodiments, the diameter of the positioning post 3 is adapted to the pressing hole 12 on the pressing plate 9, so that the edge of the pressing plate 9 contacts the spring; through precise adaptation, the pressure exerted by the pressing plate 9 on the spring can accurately act on the spring, avoiding uneven pressure distribution or ineffective testing of the fatigue performance of the spring due to inaccurate positioning.

[0048] As Figure 2 shown, in some embodiments, the guide rod 11 is fixedly installed on the top of the frame 1; ensuring that components cooperating with the guide rod 11, such as the slider 10 on the side of the mounting plate 6, can slide along a fixed and accurate path, thereby ensuring the movement direction and accuracy of relevant moving components.

[0049] As Figure 1 shown, in some embodiments, four positioning rods 13 are distributed and installed, and the positioning rods 13 are in sliding limit with the mounting plate 6; the four distributed and installed positioning rods 13 can limit and guide the movement of the mounting plate 6 from different directions, making its movement smoother and more accurate. Compared with a smaller number of positioning rods 13, the four positioning rods 13 can provide a more balanced limiting effect, reducing the possible shaking or deviation of the mounting plate 6 during movement.

[0050] Finally, it should be noted that the above are only the preferred embodiments of the present invention and are not used to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art 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 invention shall be included in the protection scope of the present invention.

Claims

1. A spring pressure fatigue testing machine, comprising a frame (1), characterized in that: A workbench (2) is fixedly mounted on the frame (1), a positioning column (3) is threadedly connected to the workbench (2), a positioning cylinder (4) is fixedly mounted on one side of the top of the frame (1), a connecting rod (5) is fixedly connected to the telescopic end of the positioning cylinder (4), one end of the connecting rod (5) is fixedly connected to a mounting plate (6), a reciprocating cylinder (7) is fixedly mounted on the mounting plate (6), an output end of the reciprocating cylinder (7) is fixedly connected to a mounting frame (8), a pressure plate (9) is installed on the internal bolts of the mounting frame (8), and pressure holes (12) are provided on the mounting frame (8) and the pressure plate (9), a sliding block (10) is fixedly connected to the side of the mounting plate (6), the sliding block (10) is slidably connected to a guide rod (11), and a positioning rod (13) is fixedly mounted on the mounting frame (8).

2. A spring pressure fatigue testing machine according to claim 1, characterized in that: The positioning posts (3) can be disassembled, assembled and replaced; the diameters of the positioning posts (3) are different, and there are two positioning posts (3) in the same group.

3. A spring pressure fatigue testing machine according to claim 2, characterized in that: The diameter of the pressure hole (12) on the mounting frame (8) is the largest, and the diameter of the pressure hole (12) on the pressure plate (9) changes with the replacement of the pressure plate (9).

4. A spring pressure fatigue testing machine according to claim 3, characterized in that: The diameter of the positioning column (3) is adapted to the pressure hole (12) on the pressure plate (9), so that the edge of the pressure plate (9) contacts the spring.

5. A spring pressure fatigue testing machine according to claim 1, characterized in that: The guide rod (11) is fixedly mounted on the top of the frame (1).

6. A spring pressure fatigue testing machine according to claim 1, characterized in that: Four positioning rods (13) are installed in a distributed manner, and the positioning rods (13) and the mounting plate (6) are slidably limited.

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