A gear comprehensive performance testing device

Abstract

The invention relates to a gear comprehensive performance testing device, including a base, a sample fixing unit, a sample limiting unit and a gear sample, wherein the sample fixing unit and the sample limiting unit are both located on the base, the sample fixing unit is pushed by a power source to move and position on the base, and the gear sample on the sample fixing unit is driven to rotate by the power source or is limited and fixed by the sample limiting unit. The device includes gear anti-tooth beating performance and static and dynamic strength tests before and after tooth beating, and can especially test the mechanical properties of gears with different radii under different initial speed conditions.

Description

Technical Field

[0001] The invention belongs to the technical field of gear performance detection tooling, and in particular relates to a gear comprehensive performance testing device. Background Art

[0002] At present, gears, as a commonly used rotating speed-changing component, are of great significance in practical engineering applications. Their mechanical behavior under complex stress conditions has also received more and more attention from engineering, especially their anti-tooth punching performance and static and dynamic strength problems before and after tooth punching. With the increasing requirements for design safety and accuracy of various gear products, the performance, dynamic and static fracture strength testing and characterization of gears before and after tooth punching have become an inevitable requirement for engineering product development. However, the currently used fracture strength and tooth punching performance testing devices are all used to characterize the mechanical properties of gears when the gears are in static working conditions. The test results are not very accurate, and the shapes of different types of gears are quite different, which cannot meet the requirements of product design accuracy. Therefore, the original testing device cannot test the tooth punching and fracture performance of gears more accurately. A multifunctional and accurate testing device for the comprehensive performance of gears is needed. The invention of the present invention is an improvement based on the above-mentioned technical problems. Summary of the invention

[0003] The present invention aims to solve the related problems in the background technology and provides a gear comprehensive performance testing device, which includes gear anti-tooth beating performance and static and dynamic strength tests before and after tooth beating, and can especially test the mechanical properties of gears with different radii under different initial speed conditions.

[0004] In order to solve the above technical problems, the technical solution adopted by the present invention is:

[0005] A gear comprehensive performance testing device comprises a base, a sample fixing unit and a sample limiting unit, wherein the sample fixing unit and the sample limiting unit are both located on the base, the sample fixing unit is pushed by a power source to move and position on the base, and the gear sample on the sample fixing unit is driven to rotate by the power source or is limited and fixed by the sample limiting unit;

[0006] The sample fixing unit includes a sample fixing bracket, a sample right fixing block, a sample left fixing block, a sample fixing shaft and the gear sample. The bottom of the sample fixing bracket can be moved and positioned on the base; the sample right fixing block and the sample left fixing block are arranged in parallel on the upper part of the sample fixing bracket, and the sample fixing shaft passes through the sample left and right fixing blocks and is driven to rotate by a power source. The gear sample is fixed to the middle part of the sample fixing shaft.

[0007] Furthermore, the power source is an electric motor.

[0008] Furthermore, a threaded hole is provided at the lower portion of the base for the propulsion shaft of the power source to pass through, and the threaded hole is threadably matched with the propulsion shaft.

[0009] Furthermore, the sample fixing bracket includes a connecting portion and a leg portion that are integrally connected, and the two leg portions arranged in parallel are located below the connecting portion, and a bridge hole is formed between the connecting portion and the two leg portions.

[0010] Furthermore, the sample limiting unit includes a fixed tooth plate and a lower support block arranged upper and lower, the lower support block is fixed on the base, the fixed tooth plate is rotatably connected to the fixed tooth plate through a rotating shaft, the fixed tooth plate is vertically positioned relative to the lower support block through a flat key, and the fixed tooth plate is meshed and fixed with the gear sample.

[0011] Furthermore, the fixed tooth plate is arranged opposite to the bridge hole.

[0012] Furthermore, a tooth punching test unit is provided, which includes an upper connecting member, an upper test shaft and a gear fixing block arranged from top to bottom, the upper connecting member is connected to the upper test shaft via an upper connecting locking pin, the gear fixing block and the upper test shaft are fixed by plugging, the gear for the tooth punching test is rotatably connected to the gear fixing block via a damping bearing, and the gear for the tooth punching test is in contact with the gear sample.

[0013] Furthermore, a gear strength testing unit is provided, which includes an upper testing mechanism, which includes an upper connecting member, an upper testing shaft and an upper tooth tip, wherein the upper connecting member is connected to the upper testing shaft via an upper connecting locking pin, the upper tooth tip is plugged and fixed to the upper testing shaft, and the upper tooth tip is in contact with the gear sample.

[0014] Furthermore, the gear strength testing unit also includes a lower testing mechanism, which includes a lower connecting member, a lower testing shaft and a lower tooth tip, the lower connecting member is rotatably connected to the lower testing shaft via a rotating shaft, the lower connecting member is fixedly connected to the lower testing shaft via a flat key, the lower tooth tip is plugged and fixed to the lower testing shaft, and the lower tooth tip is in contact with the gear sample.

[0015] Furthermore, the upper connecting member and the lower connecting member are shaft sleeves or hooks.

[0016] Furthermore, the upper connecting member and the lower connecting member are both connected to a power output testing machine.

[0017] Beneficial effects of the present invention:

[0018] (1) The test device can realize the rapid conversion between the dynamic and static state of the gear sample to meet the requirements of the gear punching test for the dynamic form of the gear sample, and the requirements of the gear strength or residual strength test for the static / dynamic form of the gear sample;

[0019] (2) The test device can adjust the distance between the upper and lower tooth tips according to different test requirements, install sample fixing shafts, left and right sample fixing blocks and fixed tooth plates of different sizes to meet the test requirements of gear samples of different sizes; install damping bearings with different damping values ​​to correspond to gear toothing conditions under different conditions to achieve the most realistic test effect;

[0020] (3) The test device has a compact structure, occupies a small space, has comprehensive testing functions, and is worthy of promotion and application. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 This is a schematic diagram of the main structure of the test device in the embodiment of the present invention;

[0022] Figure 2 A schematic diagram of the three-dimensional structure of a test device in an embodiment of the present invention;

[0023] Figure 3 This is a schematic diagram of the main structure of the test device after the left and right fixing blocks of the sample are hidden in the embodiment of the present invention.

[0024] In the figure: 1. base; 2. sample fixing unit; 21. sample fixing bracket; 211. connecting part; 212. leg part; 22. sample right fixing block; 23. sample left fixing block; 24. sample fixing shaft; 25. gear sample; 26. stepping motor; 27. propulsion shaft; 28. rotating motor; 29. ​​belt; 3. sample limiting unit; 31. fixed tooth plate; 32. lower support block; 33. rotating shaft; 34. flat key; 4. gear testing unit; 41. upper connecting piece; 42. upper test shaft; 43. gear fixing block; 44. gear for gear testing; 45. damping bearing; 46. upper connecting lock pin; 5. gear strength testing unit; 51. upper tooth tip; 52. lower connecting piece; 53. lower test shaft; 54. lower tooth tip. DETAILED DESCRIPTION

[0025] It should be noted that, in the absence of conflict, the embodiments of the present invention and the features in the embodiments may be combined with each other.

[0026] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention. In addition, the terms "first", "second", etc. are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, features defined as "first", "second", etc. may explicitly or implicitly include one or more of the features. In the description of the present invention, unless otherwise specified, "multiple" means two or more.

[0027] In the description of the invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the invention can be understood according to specific circumstances.

[0028] The present invention will be described in detail below with reference to the accompanying drawings and in combination with embodiments.

[0029] In some embodiments, a gear comprehensive performance testing device includes a base 1, a sample fixing unit 2, and a sample limiting unit 3, wherein the sample fixing unit 2 and the sample limiting unit 3 are both located on the base 1, and the sample fixing unit 2 is pushed by the propulsion shaft 27 of the stepping motor 26 to move and position on the base 1, and the gear sample 25 is installed on the sample fixing unit 2, and can be driven to rotate by the rotating motor 28, or limited and fixed by the sample limiting unit 3; when the gear sample 25 is in a rotatable state, it is pushed to a suitable position of the base 1 by the propulsion shaft 27 of the stepping motor 26, and the gear sample 25 can contact the tooth testing unit 4 for a tooth testing; when the gear sample 25 is limited and fixed with the sample limiting unit 3, the gear sample 25 can contact the gear strength testing unit 5 for a gear strength or residual strength test.

[0030] That is, the testing device can realize the rapid conversion of the dynamic and static states of the gear sample 25 to meet the requirements of the dynamic form of the gear sample 25 in the gear punching test and the static / dynamic form requirements of the gear strength or residual strength test.

[0031] In some embodiments, the sample fixing unit 2 includes a sample fixing bracket 21, a sample right fixing block 22, a sample left fixing block 23, a sample fixing shaft 24 and the gear sample 25. The T-shaped convex strip at the bottom of the sample fixing bracket 21 is located in the T-shaped slot on the upper surface of the base 1, and a threaded hole is provided at the lower part thereof for the propulsion shaft 27 to pass through, and the threaded hole is threadedly matched with the propulsion shaft 27; the sample right fixing block 22 and the sample left fixing block 23 are arranged in parallel on the upper part of the sample fixing bracket 21 through bolts, and the sample fixing shaft 24 passes through the sample left and right fixing blocks and is driven to rotate by the rotating motor 28, and the gear sample 25 is clamped and fixed to the middle part of the sample fixing shaft 24;

[0032] Furthermore, the sample fixing bracket 21 includes a connecting portion 211 and a leg portion 212 that are integrally connected, and the two leg portions 212 arranged in parallel are located below the connecting portion 211 , and a bridge hole is formed between the connecting portion 211 and the two leg portions 212 .

[0033] In some embodiments, the sample limiting unit 3 includes a fixed tooth plate 31 and a lower support block 32 arranged in an upper and lower position, the lower support block 32 is fixed to the base 1 by bolts, the fixed tooth plate 31 is rotatably connected to the fixed tooth plate 31 by a rotating shaft 33, the fixed tooth plate 31 is vertically positioned relative to the lower support block 32 by a flat key 34, and the fixed tooth plate 31 is arranged opposite to the bridge hole;

[0034] When it is necessary to limit and fix the gear sample 25, the flat key 34 is inserted into the corresponding hole, the fixed tooth plate 31 is in a vertical positioning state, and the fixed tooth plate 31 is meshed with the gear sample 25 to form a limit fixation for the gear sample 25; when it is necessary to release the limit fixation of the gear sample 25, the flat key 34 is pulled out, and the fixed tooth plate 31 can be rotated relative to the lower support block 32 to the bridge hole, thereby releasing the limit effect of the fixed tooth plate 31 on the gear sample 25.

[0035] In some embodiments, the tooth punching test unit 4 includes an upper connecting member 41, an upper test shaft 42 and a gear fixing block 43 arranged from top to bottom, the upper connecting member 41 is connected to the upper test shaft 42 through an upper connecting locking pin 46, the gear fixing block 43 and the upper test shaft 42 are fixed by the fitting connection of a T-slot and a T-shaped boss, and a tooth punching test gear 44 is rotatably connected to the gear fixing block 43 through a damping bearing 45; when a tooth punching test is required, the tooth punching test gear 44 contacts the gear sample 25 in a rotating state for testing.

[0036] In some embodiments, the gear strength test unit 5 includes an upper test mechanism and a lower test mechanism, the upper test mechanism includes an upper connecting member 41, an upper test shaft 42 and an upper tooth tip 51, the upper connecting member 41 is connected to the upper test shaft 42 through an upper connecting lock pin 46, and the upper tooth tip 51 is fixed to the upper test shaft 42 through the fitting plug-in of a T-slot and a T-shaped protrusion; the lower test mechanism includes a lower connecting member 52, a lower test shaft 53 and a lower tooth tip 54, the lower connecting member 52 is rotatably connected to the lower test shaft 53 through a rotating shaft 33, the lower connecting member 52 is fixedly connected to the lower test shaft 53 through a flat key 34, and the lower tooth tip 54 is fixed to the lower test shaft 53 through the fitting plug-in of a T-slot and a T-shaped protrusion. When the gear strength or residual strength test is required, the upper tooth tip 51 and the lower tooth tip 54 are in contact with the gear sample 25 in a stationary / rotating state for testing.

[0037] In some embodiments, the upper connecting member 41 and the lower connecting member 52 may be one of a sleeve and a hook. The upper and lower connecting members 52 are connected to a power output testing machine, which is a HTM16020 hydraulic servo high-speed dynamic testing machine of the German ZWICK company. The test actuation direction includes two directions, upper and lower.

[0038] In some embodiments, the use process of the testing device is as follows:

[0039] During the gear punching test, the sample gear is fixed on the sample gear fixed shaft through the sample left fixed block 23 and the sample right fixed block 22, the flat key 34 of the fixed tooth plate 31 is pulled out, the fixed tooth plate 31 is placed horizontally, the upper test shaft 42 is connected to the gear 44 for the tooth punching test, the flat key 34 of the lower test shaft 53 is pulled out, and the lower test shaft 53 is placed horizontally. During the test, the rotating motor 28 drives the gear sample 25 to rotate at a specific speed, and the stepper motor 26 pushes the gear sample 25 to the gear 44 for the tooth punching test at a specific speed through the propulsion shaft 27. The gear 44 for the tooth punching test can select the required damping bearing 45 according to the requirements. After the two gears are fully in contact, the teeth are punched and the test is completed.

[0040] When testing the gear strength or residual strength, place the fixed tooth plate 31 and the lower test shaft 53 vertically, insert the flat key 34 used to limit the vertical state of the fixed tooth plate 31 and the lower test shaft 53, replace the gear 44 for the tooth testing with the upper tooth tip 51 for the strength testing, and use the stepper motor 26 to adjust the position of the gear sample 25 and the upper and lower tooth tips for the strength testing. During the test, the upper and lower connecting members 52 connect the upper and lower test ends to the power output testing machine respectively, and ensure that the upper and lower test ends are coaxial and move in the vertical direction during the test. During the test, the upper and lower test ends move in the vertical direction, the gear is damaged, and the static gear strength test is completed. Pull out the flat key 34 used to limit the vertical state of the fixed tooth plate 31, and turn the motor 28 to drive the gear sample 25 to rotate at a specific speed. Dynamic gear strength testing can be performed. This process is the same as the static test process and will not be repeated.

[0041] The above is a detailed description of an embodiment of the present invention, but the content is only a preferred embodiment of the present invention and cannot be considered to limit the scope of implementation of the present invention. All equivalent changes and improvements made within the scope of the present invention should still fall within the scope of the patent coverage of the present invention.

Claims

1. A gear comprehensive performance testing device, characterized in that: It includes a base, a sample fixing unit and a sample limiting unit, wherein the sample fixing unit and the sample limiting unit are both located on the base, the sample fixing unit is pushed by a power source to move and position on the base, and the gear sample on the sample fixing unit is driven to rotate by the power source or is limited and fixed by the sample limiting unit; The sample fixing unit comprises a sample fixing bracket, a sample right fixing block, a sample left fixing block, a sample fixing shaft and the gear sample, the bottom of the sample fixing bracket can be moved and positioned on the base; the sample right fixing block and the sample left fixing block are arranged in parallel on the upper part of the sample fixing bracket, the sample fixing shaft passes through the sample left and right fixing blocks and is driven to rotate by a power source, and the gear sample is fixedly arranged in the middle of the sample fixing shaft; The sample fixing bracket comprises a connecting portion and a leg portion which are integrally connected, and two parallel-arranged leg portions are located below the connecting portion, and a bridge hole is formed between the connecting portion and the two leg portions; The sample limiting unit comprises a fixed tooth plate and a lower support block arranged in an upper and lower position, the lower support block is fixed on the base, the fixed tooth plate is rotatably connected with the fixed tooth plate through a rotating shaft, the fixed tooth plate is vertically positioned relative to the lower support block through a flat key, and the fixed tooth plate is meshed and fixed with the gear sample; A gear punching test unit is also provided, the gear punching test unit comprises an upper connecting member, an upper test shaft and a gear fixing block arranged from top to bottom, the upper connecting member is connected to the upper test shaft through an upper connecting locking pin, the gear fixing block is plug-fixed to the upper test shaft, a gear for gear punching test is rotatably connected to the gear fixing block through a damping bearing, and the gear for gear punching test is in contact with the gear sample; A gear strength test unit is also provided, the gear strength test unit comprises an upper test mechanism, the upper test mechanism comprises an upper connecting member, an upper test shaft and an upper tooth tip, the upper connecting member is connected to the upper test shaft via an upper connecting locking pin, the upper tooth tip is plugged and fixed to the upper test shaft, and the upper tooth tip is in contact with the gear sample; The gear strength test unit also includes a lower test mechanism, which includes a lower connecting member, a lower test shaft and a lower tooth tip, wherein the lower connecting member is rotatably connected to the lower test shaft via a rotating shaft, the lower connecting member is fixedly connected to the lower test shaft via a flat key, the lower tooth tip is plugged and fixed to the lower test shaft, and the lower tooth tip is in contact with the gear sample; when a gear punching test is required, the gear for the gear punching test is in contact with the gear sample in a rotating state for testing; When gear strength or residual strength testing is required, the upper tooth tip and lower tooth tip are in contact with the stationary / rotating gear sample for testing.

2. A gear comprehensive performance testing device according to claim 1, characterized in that: A threaded hole for a propulsion shaft of a power source to pass through is provided at the lower part of the base, and the threaded hole is threadably matched with the propulsion shaft.

3. A gear comprehensive performance testing device according to claim 1, characterized in that: The fixed tooth plate is arranged opposite to the bridge hole.

4. A gear comprehensive performance testing device according to claim 1, characterized in that: The upper connecting piece and the lower connecting piece are shaft sleeves or hooks.

5. A gear comprehensive performance testing device according to claim 1, characterized in that: The upper connecting piece and the lower connecting piece are both connected to the power output testing machine.

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