High-frequency vibration fatigue test clamp for engine transmission gear

Abstract

The utility model relates to an engine transmission gear high-frequency vibration fatigue test fixture, which belongs to the technical field of test fixtures, and comprises an upper clamping assembly partially meshed with a gear to be tested and a lower clamping assembly detachably connected with the gear to be tested, the upper clamping assembly is arranged above the lower clamping assembly, and the lower clamping assembly is arranged above the upper clamping assembly. The upper clamping assembly comprises a left clamping piece and a right clamping piece, and the gear to be tested is arranged between the left clamping piece and the right clamping piece. By arranging the upper clamping assembly and the lower clamping assembly, a gear to be tested can be clamped, fixed and positioned; the lower clamping assembly is movably connected with the supporting piece, so that when the gear to be tested is installed and clamped, the left centering piece and the right centering piece can be adjusted by a certain angle, and matched installation of the most centering piece, the right centering piece and the gear to be tested is facilitated; the clamp has high inherent frequency, and the test precision and the test reliability can be improved.

Description

Technical Field

[0001] The utility model relates to the technical field of test fixtures, in particular to a high-frequency vibration fatigue test fixture for an engine transmission gear. Background Art

[0002] In order to meet the high-frequency vibration fatigue acceleration test of engine transmission gears, it is necessary to design a gear high-frequency vibration acceleration test fixture to meet the requirements of fixing the samples in the test and perform vibration tests on them; the fixture is required to fix the gears, but in the prior art, when installing the gears, the position between the fixture and the gears has high requirements, which will affect the efficiency of fixing the gears on the fixture. Utility Model Content

[0003] In order to overcome the above-mentioned defects of the prior art, the utility model provides a high-frequency vibration fatigue test fixture for engine transmission gears, which can meet the test requirements and is simple and fast to install.

[0004] In order to achieve the above-mentioned purpose of the invention, the utility model provides a high-frequency vibration fatigue test fixture for engine transmission gears, including an upper clamping assembly partially meshed with a gear to be tested and a lower clamping assembly detachably connected to the gear to be tested, the upper clamping assembly being arranged above the lower clamping assembly, the upper clamping assembly comprising a left clamping member and a right clamping member, and the gear to be tested being arranged between the left clamping member and the right clamping member.

[0005] Furthermore, the left clamping member is provided with a left limit tooth meshing with the gear to be tested on the side facing the right clamping member, and the right clamping member is provided with a right limit tooth meshing with the gear to be tested on the side facing the left clamping member, and the left clamping member is connected to the right clamping member via a connecting member.

[0006] Furthermore, the clamp also includes a mounting frame, the upper clamping assembly is connected to the mounting frame, and the mounting frame is arranged on the frame.

[0007] Furthermore, the fixture also includes a vibration table, and the lower clamping assembly is arranged on the vibration table through a support.

[0008] Furthermore, the lower clamping assembly is movably connected to the support member.

[0009] Furthermore, the lower clamping assembly includes a right centering piece arranged on one side of the gear to be tested and a left centering piece arranged on the other side of the gear to be tested, and the left centering piece and the right centering piece are symmetrically arranged with respect to the gear to be tested.

[0010] Furthermore, the lower clamping assembly also includes a support plate, and any one of the left centering piece and the right centering piece is fixedly connected to the support plate.

[0011] Furthermore, the gear to be tested is provided with a clamping through hole, and the left centering piece and the right centering piece are both provided with positioning holes aligned with the clamping through hole, and the positioning holes cooperate with the positioning pins.

[0012] Furthermore, protrusions are provided on the left centering member and the right centering member, and the positioning holes are provided on the protrusions.

[0013] Compared with the prior art, the beneficial effects of the utility model are:

[0014] By setting the upper clamping assembly and the lower clamping assembly, the gear to be tested can be clamped and fixed in position;

[0015] By movably connecting the lower clamping assembly with the supporting member, the left centering member and the right centering member can be adjusted to a certain angle when installing and clamping the gear to be tested, so as to facilitate the coordinated installation of the centering member, the right centering member and the gear to be tested;

[0016] The fixture has a higher natural frequency and can improve the accuracy and reliability of the test. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the structure of an embodiment of the utility model;

[0018] Figure 2 for Figure 1 A is a schematic diagram of the enlarged structure of the middle part;

[0019] Figure 3 It is an enlarged structural schematic diagram of the left centering piece, the right centering piece and the gear to be tested. DETAILED DESCRIPTION

[0020] In order to make the purpose, technical solution and advantages of the embodiment of the utility model clearer, the technical solution in the embodiment of the utility model will be clearly and completely described in conjunction with the drawings of the utility model. Obviously, the described embodiment is a part of the embodiment of the invention, not all of the embodiments. The embodiment of the utility model is described below in conjunction with the drawings.

[0021] refer to Figure 1 to Figure 3 The high-frequency vibration fatigue test fixture of the engine transmission gear includes an upper clamping assembly partially meshed with the gear 5 to be tested and a lower clamping assembly 6 detachably connected to the gear 5 to be tested, the upper clamping assembly is arranged above the lower clamping assembly 6, the upper clamping assembly includes a left clamping member 2 and a right clamping member 3, the gear 5 to be tested is arranged between the left clamping member 2 and the right clamping member 3, and the engine gear 5 to be tested is clamped on the left and right sides by the upper clamping assembly and the lower clamping assembly 6, so as to perform a high-frequency vibration test on the gear 5;

[0022] A left limiting tooth 9 meshing with the gear 5 to be tested is provided on the side of the left clamping member 2 facing the right clamping member 3, and a right limiting tooth 10 meshing with the gear 5 to be tested is provided on the side of the right clamping member 3 facing the left clamping member 2. The left clamping member 2 and the right clamping member 3 are connected by a connecting member 11. The left limiting tooth 9 or the right limiting tooth 10 can be a plurality of teeth partially meshing with the gear 5 to be tested. During installation, the left clamping member 2 is located on the upper left side of the gear 5 to be tested, and the right clamping member 3 is arranged on the upper right side of the gear 5 to be tested. The installation of the gear 5 to be tested is completed by limiting the upper left and upper right of the gear 5 to be tested, as well as limiting the middle thereof.

[0023] The fixture further includes a mounting frame 4, the upper clamping assembly is connected to the mounting frame 4, the mounting frame 4 is arranged on the frame 1, the mounting frame 4 is used to support the upper clamping assembly, and the upper clamping assembly is arranged above the lower clamping assembly 6 through the mounting frame 4;

[0024] The fixture further includes a vibration table 8, on which the lower clamping assembly 6 is arranged through a support 7, and the vibration table 8 is used to provide a vibration source for the gear 5 under test;

[0025] The lower clamping assembly 6 is movably connected to the support member 7, and the lower clamping assembly 6 and the support member 7 are connected by a ball head, so that the lower clamping assembly 6 can be rotated at a certain angle to facilitate the centering of the left centering member 12 and the right centering member 13, and the gear 5 to be tested can be installed more quickly;

[0026] The lower clamping assembly 6 includes a right centering piece 13 arranged on one side of the gear 5 to be tested and a left centering piece 12 arranged on the other side of the gear 5 to be tested. The left centering piece 12 and the right centering piece 13 are symmetrically arranged about the gear 5 to be tested. The left centering piece 12 and the right centering piece 13 are arranged on the left and right sides of the gear 5 to be tested, which limits the degree of freedom of the gear 5 to be tested in the thickness direction. After the installation is completed, the gear 5 to be tested will not be separated from the upper clamping assembly due to the limitation of the thickness direction of the gear 5 to be tested, so that the vibration test can be carried out more safely and reliably.

[0027] The lower clamping assembly 6 also includes a support plate 16, and any one of the left centering member 12 and the right centering member 13 is fixedly connected to the support plate 16. The fixed connection between the left centering member 12 and the right centering member 13 and the support plate 16 can limit the positions of the left centering member 12 and the right centering member 13. The one that is not fixedly connected to the support plate 16 can be fitted with the gear 5 to be tested, and can be suitable for gears 5 of different thicknesses. The bottom of the one that is not fixedly connected to the support plate 16 is a plane, supported on the support plate 16, and cooperates with the positioning holes 14 thereon, so that its position can also be completely fixed;

[0028] A clamping through hole 15 is provided on the gear 5 to be tested, and a positioning hole 14 aligned with the clamping through hole 15 is provided on the left centering piece 12 and the right centering piece 13, and the positioning hole 14 cooperates with the positioning pin; a protrusion is provided on the left centering piece 12 and the right centering piece 13, and the positioning hole 14 is set on the protrusion. When installing, first insert the gear 5 to be tested into the left clamping piece 2 and the right clamping piece 3, let one side of the gear 5 contact with the left centering piece 12 or the right centering piece 13 that is fixedly connected to the support plate 16, and then install the left centering piece 12. 2 or the one of the right centering pieces 13 that is not fixed to the support plate 16, adjust the left centering piece 12 and the right centering piece 13, align the positioning holes 14 on the left centering piece 12 and the right centering piece 13 with the clamping through hole 15, insert the positioning pin, insert the pin into the head of the positioning pin for positioning, or align the positioning hole 14 on the left centering piece 12 or the right centering piece 13 that is fixed to the support plate 16 with the clamping through hole 15 first, install the positioning pin, and then install the one that is not fixed to the support plate 16, and complete the installation of the gear 5 to be tested;

[0029] By providing the upper clamping assembly and the lower clamping assembly 6, the gear 5 to be tested can be clamped and fixed in position;

[0030] By movably connecting the lower clamping assembly 6 with the supporting member 7, when installing and clamping the gear 5 to be tested, the left centering member 12 and the right centering member 13 can be adjusted to a certain angle, which facilitates the installation of the centering member, the right centering member 13 and the gear 5 to be tested;

[0031] The fixture has a higher natural frequency and can improve the accuracy and reliability of the test.

[0032] The technical solution of the present invention is described above in conjunction with specific implementation methods, but it should be noted that the above descriptions are only for explaining the solution of the present invention and cannot be interpreted in any way as a specific limitation on the scope of protection of the invention. Based on the explanation here, those skilled in the art can think of other specific implementation methods or equivalent replacements of the present invention without creative work, and they will all fall within the scope of protection of the present invention.

Claims

1. A high-frequency vibration fatigue test fixture for engine transmission gears, characterized in that: It includes an upper clamping assembly that is partially meshed with the gear to be tested and a lower clamping assembly that is detachably connected to the gear to be tested. The upper clamping assembly is arranged above the lower clamping assembly. The upper clamping assembly includes a left clamping member and a right clamping member. The gear to be tested is arranged between the left clamping member and the right clamping member.

2. The engine transmission gear high frequency vibration fatigue test fixture according to claim 1, characterized in that: The left clamping piece is provided with a left limiting tooth meshing with the gear to be tested on one side facing the right clamping piece, and the right clamping piece is provided with a right limiting tooth meshing with the gear to be tested on one side facing the left clamping piece. The left clamping piece is connected to the right clamping piece via a connecting piece.

3. The high-frequency vibration fatigue test fixture for engine transmission gears according to claim 2, characterized in that: The clamp also includes a mounting frame, the upper clamping assembly is connected to the mounting frame, and the mounting frame is arranged on the frame.

4. The engine transmission gear high frequency vibration fatigue test fixture according to claim 1, characterized in that: The fixture further comprises a vibration table, and the lower clamping assembly is arranged on the vibration table through a support.

5. The high-frequency vibration fatigue test fixture for engine transmission gears according to claim 4, characterized in that: The lower clamping assembly is movably connected to the supporting member.

6. The high-frequency vibration fatigue test fixture for engine transmission gears according to claim 4, characterized in that: The lower clamping assembly includes a right centering piece arranged on one side of the gear to be tested and a left centering piece arranged on the other side of the gear to be tested, and the left centering piece and the right centering piece are symmetrically arranged with respect to the gear to be tested.

7. The engine transmission gear high frequency vibration fatigue test fixture according to claim 6, characterized in that: The lower clamping assembly also includes a support plate, and any one of the left centering member and the right centering member is fixedly connected to the support plate.

8. The high-frequency vibration fatigue test fixture for engine transmission gears according to claim 7, characterized in that: The gear to be tested is provided with a clamping through hole, and the left centering piece and the right centering piece are both provided with positioning holes aligned with the clamping through hole, and the positioning holes cooperate with the positioning pins.

9. The high-frequency vibration fatigue test fixture for engine transmission gears according to claim 8, characterized in that: The left centering piece and the right centering piece are both provided with protrusions, and the positioning holes are arranged on the protrusions.

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