Piston ring fatigue test device

Abstract

The utility model discloses a piston ring fatigue test device. The device comprises a workbench and clamping modules arranged on two opposite sides of the workbench. Wherein the clamping module comprises rotating frames, connecting arms, a fixing assembly and a driving assembly, a piston ring clamping groove matched with a piston ring is formed in the workbench, the rotating frames are rotatably arranged on the two opposite sides of the workbench respectively, and the connecting arms matched with the piston ring are arranged at the outer ends of the rotating frames. According to the piston ring clamping device, the defects that in the prior art, when the device is used, a piston ring needs to be placed in a piston ring clamping groove, then the position of a connecting arm is manually adjusted, then the piston ring is clamped through a clamping roller set, clamping and assembling of the piston ring are very troublesome, dismounting is inconvenient, and time and labor are wasted are overcome. Therefore, the piston ring fatigue test device which is convenient for clamping and assembling the piston ring is provided.

Description

Technical Field

[0001] This utility model relates to the field of piston ring processing technology, specifically to a piston ring fatigue testing device. Background Technology

[0002] Piston rings are core components inside internal combustion engines and are widely used in various power machinery. Together with cylinders, pistons, and cylinder walls, they seal the fuel gas. Early piston rings were formed by casting, but with technological advancements, high-power steel piston rings were developed. Furthermore, with the continuous improvement of engine performance and environmental requirements, the requirements for the inner and outer circular contours and the quality of the opening of piston rings are becoming increasingly stringent.

[0003] Chinese Patent No. CN202121807216.0 discloses a piston ring fatigue testing device. This device uses a guide groove on the base plate for mounting piston ring slots, clamping modules on the base plates on both sides of the piston ring slots, a rotating pry bar to drive the connecting roller group on the connecting arm to embed into the piston ring located in the piston ring slot, a cylinder to drive a movable block, and the movable block to drive the connecting roller unit located on the movable block to stretch and contract the piston ring to achieve the piston ring blank test.

[0004] The applicant discovered the following technical problems when implementing the above-mentioned technical solution:

[0005] When using this device, the piston ring needs to be placed in the piston ring slot, and then the position of the connecting arm needs to be adjusted manually. The piston ring is then clamped by the clamping roller group. The clamping and assembly of the piston ring is very troublesome, and disassembly is also inconvenient, which is time-consuming and labor-intensive.

[0006] Therefore, providing a piston ring fatigue testing device that facilitates the clamping and assembly of piston rings is a problem that this utility model urgently needs to solve. Utility Model Content

[0007] To address the aforementioned technical problems, the purpose of this utility model is to overcome the cumbersome and time-consuming nature of existing piston ring fatigue testing devices. These devices require placing the piston ring in the piston ring slot, manually adjusting the position of the connecting arm, and then clamping the piston ring using clamping rollers. The clamping and assembly of the piston ring is cumbersome, and disassembly is also inconvenient. Therefore, this invention provides a piston ring fatigue testing device that facilitates the clamping and assembly of piston rings.

[0008] To achieve the above objectives, this utility model provides a piston ring fatigue testing device, the device comprising: a worktable and clamping modules disposed on opposite sides of the worktable; wherein, the clamping module comprises: a rotating frame, a connecting arm, a fixing component, and a driving component, the worktable is provided with a piston ring slot adapted to the piston ring, and a rotating frame is rotatably disposed on opposite sides of the worktable, the outer end of the rotating frame is provided with a connecting arm adapted to the piston ring, the outer end of the connecting arm is provided with a limiting groove adapted to the piston ring, the fixing component is disposed on the outer end of the connecting arm for fixing the piston ring, and the driving component is disposed on the worktable for driving the rotating frame to reciprocate.

[0009] Preferably, the connecting arm is arc-shaped.

[0010] Preferably, the piston ring groove is provided with limiting brackets adapted to the connecting arm on both sides.

[0011] Preferably, the fixing assembly includes: a rotating rod, a fixing block, and a fixing member. One end of the rotating rod is hinged to one side of the outer end of the connecting arm. The fixing block is adapted to the opening of the connecting arm limiting groove, and one side of the fixing block is rotatably disposed on the outside of the rotating rod. The fixing block can be fixed to the connecting arm limiting groove by the fixing member.

[0012] Preferably, the drive assembly includes a linear motor, one end of which is hinged to the bottom of the worktable away from its output end, and the outer end of its telescopic rod is hinged to one side of the rotating frame.

[0013] Preferably, the inner wall of the fixing block is arc-shaped to match the inner side of the piston ring, and the inner wall of the limiting groove is arc-shaped to match the outer side of the piston ring.

[0014] Preferably, the inner wall of the fixing block and the inner wall of the limiting groove are provided with anti-slip texture.

[0015] According to the above technical solution, the beneficial effects of this utility model compared with the prior art are as follows: This application inserts the piston ring into the piston ring slot, then starts the drive assembly to drive the connecting arm to rotate through each rotating frame until the opposite sides of the piston ring are inserted into the limiting groove. Then, the opposite sides of the piston ring are fixed by the fixing assembly. Then, any drive assembly is started to drive the corresponding rotating frame to rotate, thereby performing a tensile fatigue test on the piston ring through the connecting arm. This device can fix the piston ring without manually adjusting the position of the connecting arm. When removing it, it is only necessary to contact the fixing assembly and then start the drive assembly to drive each rotating frame to drive the connecting arm to rotate, thereby releasing the fixation of the piston ring.

[0016] Other features and advantages of this utility model will be described in detail in the following detailed description section; and all parts not covered in this utility model are the same as or can be implemented using existing technology. Attached Figure Description

[0017] The accompanying drawings are provided to further illustrate the present invention and form part of the specification. They are used together with the following detailed description to explain the present invention, but do not constitute a limitation thereof. In the drawings:

[0018] Figure 1 The planar surface of the piston ring fatigue testing device provided in a preferred embodiment of this utility model Figure 1 .

[0019] Figure 2 The planar surface of the piston ring fatigue testing device provided in a preferred embodiment of this utility model Figure 2 .

[0020] Figure 3 This is a perspective view of a piston ring fatigue testing device provided in a preferred embodiment of the present invention.

[0021] Explanation of reference numerals in the attached drawings: 1-Workbench; 101-Piston ring groove; 102-Limiting frame; 2-Clamping module; 201-Rotating frame; 202-Connecting arm; 20201-Limiting groove; 203-Fixing component; 20301-Rotating rod; 20302-Fixing block; 204-Drive component; 20401-Linear motor; 20402-Telescopic rod. Detailed Implementation

[0022] The specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are for illustration and explanation only and are not intended to limit the scope of this utility model.

[0023] In the description of the embodiments of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," indicating orientation or positional relationships, are based on the orientation or positional relationships shown in the accompanying drawings, or the orientation or positional relationships commonly used when the utility model product is in use. These are merely for the convenience of describing the utility model and simplifying the description, and do not indicate or imply that the device or component referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the utility model. Furthermore, the terms "first," "second," and "third," etc., are only used for distinguishing descriptions and should not be construed as indicating or implying relative importance. Additionally, the terms "horizontal," "vertical," and "suspended," etc., do not indicate that the component is required to be absolutely horizontal or suspended, but rather that it can be slightly tilted. For example, "horizontal" simply means that its direction is more horizontal than "vertical," and does not mean that the structure must be completely horizontal, but can be slightly tilted.

[0024] In the description of the embodiments of this utility model, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set," "install," "connect," and "link" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0025] To further understand the features, technical means, and specific objectives and functions achieved by this utility model, the following detailed description of this utility model is provided in conjunction with the accompanying drawings and specific embodiments.

[0026] Reference Figures 1-3 A piston ring fatigue testing device includes a worktable 1 and clamping modules 2 disposed on opposite sides of the worktable 1. Each clamping module 2 includes a rotating frame 201, a connecting arm 202, a fixing component 203, and a driving component 204. The worktable 1 has a piston ring groove 101 adapted to the piston ring, and rotating frames 201 are rotatably disposed on opposite sides of the worktable 1. A connecting arm 202 adapted to the piston ring is disposed at the outer end of the rotating frame 201, and a limiting groove 20201 adapted to the piston ring is disposed at the outer end of the connecting arm 202. The fixing component 203 is disposed at the outer end of the connecting arm 202 for fixing the piston ring. The driving component 204 is disposed on the worktable 1 for driving the rotating frame 201 to reciprocate.

[0027] This application performs a tensile fatigue test on the piston rings by inserting the piston rings into the piston ring slots 101, then activating the drive assembly 204 to rotate the connecting arms 202 via each rotating frame 201 until the opposite sides of the piston rings are engaged in the limiting grooves 20201. Then, the piston rings are fixed to the opposite sides by the fixing assembly 203. Then, any drive assembly 204 is activated to rotate the corresponding rotating frame 201, thereby performing a tensile fatigue test on the piston rings via the connecting arms 202. This device can fix the piston rings without manually adjusting the position of the connecting arms 202. When removing the piston rings, it is only necessary to contact the fixing assembly 203 and then activate the drive assembly 204 to rotate each rotating frame 201 to rotate the connecting arms 202, thereby releasing the fixation of the piston rings.

[0028] Reference Figure 2 The connecting arm 202 is arc-shaped.

[0029] When the arc-shaped connecting arm 202 of this application swings under the drive of the rotating frame 201, it will cause the piston ring to tilt downward to open, which is more in line with the opening situation in actual use; in actual use, it is necessary to pry open the piston ring to put the piston ring on the piston pin.

[0030] Reference Figure 2 The piston ring groove 101 is provided with limiting brackets 102 on both sides, which are adapted to the connecting arm 202.

[0031] This application limits the arc-shaped connecting arm 202 by setting a limit bracket 102 to prevent the drive assembly 204 from driving one side of the connecting arm 202 to move excessively through the rotating bracket 201, which would prevent the other side of the connecting arm 202 from cooperating to achieve the initial fixation of the piston ring.

[0032] Reference Figure 3 The fixing component 203 includes a rotating rod 20301, a fixing block 20302, and a fixing member. One end of the rotating rod 20301 is hinged to one side of the outer end of the connecting arm 202. The fixing block 20302 is adapted to the opening of the limiting groove 20201 of the connecting arm 202, and one side of it is rotatably disposed on the outside of the rotating rod 20301. The fixing block 20302 can be fixed at the limiting groove 20201 of the connecting arm 202 by the fixing member.

[0033] In this application, the piston ring is initially fixed by the connecting arms 202 on both sides of the piston ring groove 101 through the limiting groove 20201. Then, the rotating rod 20301 and the fixing block 20302 are rotated to seal the fixing block 20302 at the limiting groove 20201 of the connecting arm 202. Finally, the fixing block 20302 is fixed by a fastener, thereby achieving the fixing of the piston ring. The fastener can be a screw, etc.

[0034] Reference Figure 3 The drive assembly 204 includes a linear motor 20401, one end of which is hinged to the bottom of the worktable 1 away from its output end, and the outer end of its telescopic rod 20402 is hinged to one side of the rotating frame 201.

[0035] This application uses a linear motor 20401 to drive the telescopic rod 20402 to extend and retract, thereby driving the rotating frame 201 to rotate back and forth.

[0036] Reference Figure 3 The inner wall of the fixing block 20302 is arc-shaped to match the inner side of the piston ring, and the inner wall of the limiting groove 20201 is arc-shaped to match the outer side of the piston ring.

[0037] This application uses this design to ensure that the inner wall of the fixing block 20302 and the inner wall of the limiting groove 20201 are in full contact with the piston ring, thereby increasing the friction and improving the fixing effect.

[0038] Reference Figure 3 The inner wall of the fixing block 20302 and the inner wall of the limiting groove 20201 are provided with anti-slip texture.

[0039] This application improves the fixing effect by setting anti-slip texture to further increase friction.

[0040] In use, the device provided by this utility model involves inserting the piston ring into the piston ring slot 101, then activating the drive assembly 204 to rotate the connecting arm 202 via each rotating frame 201 until the opposite sides of the piston ring are inserted into the limiting groove 20201. Then, the fixing assembly 203 fixes the opposite sides of the piston ring. Then, any drive assembly 204 is activated to rotate the corresponding rotating frame 201, thereby performing a tensile fatigue test on the piston ring via the connecting arm 202. This device can fix the piston ring without manually adjusting the position of the connecting arm 202. When removing it, it is only necessary to contact the fixing assembly 203 and then activate the drive assembly 204 to drive each rotating frame 201 to rotate the connecting arm 202, thereby releasing the fixation of the piston ring.

[0041] The preferred embodiments of the present invention have been described in detail above with reference to the accompanying drawings. However, the present invention is not limited to the specific details of the above embodiments. Within the scope of the technical concept of the present invention, various simple modifications can be made to the technical solution of the present invention, and these simple modifications all fall within the protection scope of the present invention.

[0042] It should also be noted that the various specific technical features described in the above specific embodiments can be combined in any suitable way without contradiction. In order to avoid unnecessary repetition, this utility model will not describe the various possible combinations separately.

[0043] Furthermore, various different embodiments of this utility model can be combined in any way, as long as they do not violate the spirit of this utility model, they should also be regarded as the content disclosed by this utility model.

Claims

1. A piston ring fatigue testing device, characterized in that, The device includes: a worktable (1) and clamping modules (2) disposed on opposite sides of the worktable (1); wherein, The clamping module (2) includes: a rotating frame (201), a connecting arm (202), a fixing component (203), and a driving component (204). The worktable (1) is provided with a piston ring slot (101) adapted to the piston ring, and the rotating frame (201) is rotatably provided on its opposite sides. The outer end of the rotating frame (201) is provided with a connecting arm (202) adapted to the piston ring. The outer end of the connecting arm (202) is provided with a limiting groove (20201) adapted to the piston ring. The fixing component (203) is provided on the outer end of the connecting arm (202) for fixing the piston ring. The driving component (204) is provided on the worktable (1) for driving the rotating frame (201) to reciprocate.

2. The piston ring fatigue testing device according to claim 1, characterized in that, The connecting arm (202) is arc-shaped.

3. The piston ring fatigue testing device according to claim 2, characterized in that, The piston ring groove (101) is provided with limiting brackets (102) on both sides that are adapted to the connecting arm (202).

4. The piston ring fatigue testing device according to claim 1, characterized in that, The fixing component (203) includes: a rotating rod (20301), a fixing block (20302), and a fixing member. One end of the rotating rod (20301) is hinged to one side of the outer end of the connecting arm (202). The fixing block (20302) is adapted to the opening of the limiting groove (20201) of the connecting arm (202), and one side of it is rotatably disposed on the outside of the rotating rod (20301). The fixing block (20302) can be fixed to the limiting groove (20201) of the connecting arm (202) by the fixing member.

5. The piston ring fatigue testing device according to claim 1, characterized in that, The drive assembly (204) includes a linear motor (20401), one end of which is hinged to the bottom of the worktable (1) away from its output end, and the outer end of its telescopic rod (20402) is hinged to one side of the rotating frame (201).

6. The piston ring fatigue testing device according to claim 4, characterized in that, The inner wall of the fixing block (20302) is arc-shaped to match the inner side of the piston ring, and the inner wall of the limiting groove (20201) is arc-shaped to match the outer side of the piston ring.

7. The piston ring fatigue testing device according to claim 6, characterized in that, The inner wall of the fixing block (20302) and the inner wall of the limiting groove (20201) are provided with anti-slip texture.

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