Micro cycloidal pin wheel planetary reducer gear bending fatigue test equipment

Abstract

The utility model belongs to the technical field of accessory test application, and particularly discloses a miniature cycloidal-pin wheel planetary reducer gear bending fatigue test device which is composed of a test bench, a load bench, a driving assembly, a first load assembly, a second load assembly and the like. The beneficial effects of the miniature cycloidal-pin wheel planetary reducer gear bending fatigue test equipment are that 1, aiming at the current gear bending fatigue test equipment, the application environment of a planetary reducer gear is simulated more truly, and the detection parameter acquisition accuracy is improved; 2, the first high-precision rotating speed and torque sensor and the second high-precision rotating speed and torque sensor are combined with an external measurement and control system for use, so that data acquisition and recording of rotating speed and torque as well as alarm self-inspection and alarm can be realized, and the detection efficiency and safety are improved; and 3, the overall structural design is reasonable and simple, and in addition, the combined design can perform matching test on test gears with different sizes.

Description

Technical Field

[0001] This utility model belongs to the field of accessory testing application technology, specifically relating to a bending fatigue testing device for micro cycloidal pinwheel planetary reducer gears, used for rapid and safe bending fatigue testing of gears during the research and development process. Background Technology

[0002] During the development of miniature cycloidal pinwheel planetary reducers, corresponding bending fatigue tests need to be conducted on sample components such as gears to ensure that the mass-produced gear components have uniform quality and meet assembly and use requirements.

[0003] Search results show that: (1) Application No. / Patent No. 202223609976.8 discloses a gear bending fatigue testing device, comprising: a worktable; two support plates, which are arranged opposite each other at both ends of the worktable, and a gear is installed in the opening formed by the two support plates and the worktable through a fixed shaft; one end of a lower pressure head is disposed on the worktable, and the other end abuts against the gear teeth; an upper pressure head is located directly above the lower pressure head, one end of the upper pressure head is connected to a pulse head, and under the drive of the pulse head, the other end of the upper pressure head moves toward or away from the lower pressure head; a circumferential positioning device, comprising a positioning pressure head, a fixing block and a fastener, the fixing block is disposed on the worktable and has a groove, the positioning pressure head is slidably disposed in the groove, one end of the positioning pressure head is connected to the fastener, and when the fastener is tightened, the other end of the positioning pressure head is inserted into the gear tooth groove and abuts against the gear teeth. The testing device provided in this application can circumferentially position the gear teeth and more accurately adjust the contact position of the upper pressure head, the lower pressure head and the gear teeth.

[0004] (2) Application No. / Patent No. 202422205387.6 discloses a fatigue resistance testing device for plastic gears, including a testing box and a gear body. The testing box has symmetrical rotating rods inside, and each of the two rotating rods has a mounting cylinder at its top. The mounting cylinder has a positioning screw inside, and the top of the positioning screw extends to the outside of the mounting cylinder and has a rotating block. The positioning screw is threadedly connected to a threaded cylinder, and several connecting blocks are rotatably arranged on the outside of the threaded cylinder. One end of the connecting block is rotatably equipped with a positioning rod. The outer wall of the mounting cylinder has a through hole for the positioning rod to move. The inside of the gear body has a positioning groove that matches the positioning rod. By rotating the positioning screw, the threaded cylinder is driven to move downward, and at the same time, the connecting block is driven to squeeze the positioning rod, so that the positioning rod is inserted into the positioning hole inside the gear body. The positioning rod can prevent the gear body from easily shaking when rotating at high speed, thus improving the test results.

[0005] Analysis shows that (1) and (2) are single-transmission load meshing tests of gears, which are not suitable for double-sided simulated load tests of planetary reducer gears. If they are used for the corresponding tests, the test results will have large errors.

[0006] Therefore, based on the above problems, this utility model provides a bending fatigue testing device for miniature cycloidal pinwheel planetary reducer gears. Utility Model Content

[0007] Purpose of the utility model: The purpose of this utility model is to provide a bending fatigue testing device for micro cycloidal pinwheel planetary reducers, solve the technical problems existing in the gear bending fatigue testing devices in the background art, and improve the accuracy of acquiring the testing parameters for bending fatigue testing of planetary reducers.

[0008] Technical Solution: The present invention relates to a micro cycloidal pinwheel planetary reducer gear bending fatigue testing device, comprising a test bench, a load bench, a drive assembly, a first load assembly, and a second load assembly. The drive assembly includes a motor mount mounted on the symmetrical centerline end face of one end of the test bench, a power motor mounted on the motor mount, a coupling mounted on the power motor, a first vertical bearing seat mounted on the test bench and located on one side of the motor mount, a rotating shaft mounted on the first vertical bearing seat and connected at one end to the coupling, and a test gear fixing plate mounted at the other end of the rotating shaft. The first load assembly includes a set of second load assemblies symmetrically arranged on one end face of the load bench. The second load assembly includes a vertical bearing housing, a first load shaft mounted on the second vertical bearing housing, a first load gear fixing plate mounted on one end face of the first load shaft, and a first load gear mounted on the first load gear fixing plate; the second load assembly includes a set of third vertical bearing housings symmetrically arranged on the other end face of the load platform, a second load shaft mounted on the third vertical bearing housing, a second load gear fixing plate mounted on one end face of the second load shaft, and a second load gear mounted on the second load gear fixing plate; wherein, the test gear is mounted on the test gear fixing plate and is arranged in a horizontal meshing manner with the first load gear and the second load gear, respectively.

[0009] In this technical solution, the drive assembly further includes at least two sets of test gear fixing plate screw grooves symmetrically arranged on one side of the test gear fixing plate, and test gear fastening bolts that fix the test gear and the test gear fixing plate through the test gear fixing plate screw grooves.

[0010] In this technical solution, the first load component further includes at least two sets of first threaded grooves symmetrically arranged on one side of the first load gear fixing plate, and first fastening bolts that fix the first load gear fixing plate and the first load gear through the first threaded grooves.

[0011] In this technical solution, the second load component further includes at least two sets of second threaded grooves symmetrically arranged on one side of the second load gear fixing plate, and second fastening bolts that fix the second load gear fixing plate and the second load gear through the second threaded grooves.

[0012] The micro cycloidal pinwheel planetary reducer gear bending fatigue testing equipment of this technical solution also includes a first high-precision speed and torque sensor and a second high-precision speed and torque sensor, which are disposed on one end face of the load platform and used in conjunction with the first load shaft and the second load shaft, respectively.

[0013] In this technical solution, the test gear, the first load gear, and the second load gear are of the same size.

[0014] In this technical solution, the size of the test gear is greater than or less than the size of the first load gear and the second load gear, respectively, and the size of the first load gear and the second load gear is the same.

[0015] In this technical solution, the test gear, the first load gear, and the second load gear have different dimensions.

[0016] Compared with existing technologies, the advantages of this utility model's miniature cycloidal pinwheel planetary reducer gear bending fatigue testing equipment are as follows: 1. Compared with current gear bending fatigue testing equipment, it more realistically simulates the application environment of planetary reducer gears, improving the accuracy of test parameter acquisition; 2. The first high-precision speed and torque sensor and the second high-precision speed and torque sensor, combined with an external measurement and control system, can realize the data acquisition and recording of speed and torque, as well as alarm self-check and alarm, improving testing efficiency and safety; 3. The overall structure design is reasonable and simple, and the modular design can be used for matching tests on test gears of different sizes. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0018] Figure 1 This is a top view schematic diagram of the micro cycloidal pinwheel planetary reducer gear bending fatigue testing device of this utility model;

[0019] Figure 2 yes Figure 1 A schematic diagram of the split-part structure;

[0020] Figure 3 This is a side view schematic diagram of the test gear, the first load gear, and the second load gear;

[0021] Figure 4 yes Figure 1 Schematic diagram of the structure of the main view section

[0022] The numbers in the diagram are as follows: A-Test stand, B-Load stand, C-First high-precision speed and torque sensor, D-Second high-precision speed and torque sensor, 10-Motor mount, 11-Power motor, 12-Coupling, 13-First vertical bearing seat, 14-Rotating shaft, 15-Test gear fixing plate, 16-Test gear fixing plate screw groove, 17-Test gear fastening bolt, 18-Test gear, 200-Second vertical bearing seat, 201-First load rotating shaft, 202-First load gear fixing plate, 203-First screw groove, 204-First load gear, 205-First fastening bolt, 300-Third vertical bearing seat, 301-Second load rotating shaft, 302-Second load gear fixing plate, 303-Second screw groove, 304-Second load gear, 305-Second fastening bolt. Detailed Implementation

[0023] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the protection scope of the present utility model.

[0024] In the description of this utility model, it should be noted that the terms "top," "bottom," "one side," "the other side," "front," "back," "middle part," "inner," "top," and "bottom," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this utility model and for simplifying the description, and do not indicate or imply that the device or element 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 this utility model. The terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance. Furthermore, unless otherwise explicitly specified and limited, the terms "installed," "connected," and "joined" 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 based on the specific circumstances.

[0025] Example 1

[0026] like Figure 1 , Figure 2 , Figure 3 and Figure 4The micro cycloidal pinwheel planetary reducer gear bending fatigue testing equipment shown consists of a test bench A, a load bench B, a drive assembly 1, a first load assembly 2, and a second load assembly 3.

[0027] The drive assembly 1 includes a motor base 10 disposed on the end face of the symmetrical center line at one end of the test bench A, a power motor 11 disposed on the motor base 10, a coupling 12 disposed on the power motor 11, a first vertical bearing seat 13 disposed on the test bench A and located on one side of the motor base 10, a rotating shaft 14 disposed on the first vertical bearing seat 13 and connected at one end to the coupling 12, and a test gear fixing plate 15 disposed at the other end of the rotating shaft 14.

[0028] The first load assembly 2 includes a set of second vertical bearing seats 200 symmetrically arranged on one side end face of the load platform B, a first load shaft 201 arranged on the second vertical bearing seats 200, a first load gear fixing plate 202 arranged on one end face of the first load shaft 201, and a first load gear 204 mounted on the first load gear fixing plate 202.

[0029] The second load assembly 3 includes a set of third vertical bearing seats 300 symmetrically arranged on the other end face of the load platform B, a second load shaft 301 arranged on the third vertical bearing seat 300, a second load gear fixing plate 302 arranged on one end face of the second load shaft 301, and a second load gear 304 mounted on the second load gear fixing plate 302.

[0030] The test gear 18 is mounted on the test gear fixing plate 15 and is arranged in a horizontal meshing manner with the first load gear 204 and the second load gear 304, respectively.

[0031] The working principle is as follows:

[0032] (1) Assemble the test gear 18, the first load gear 204, and the second load gear 304 into place, and mesh the test gear 18, the first load gear 204, and the second load gear 304 with each other. Then apply lubricant to the test gear 18, the first load gear 204, and the second load gear 304.

[0033] (2) Start the power motor 11. At this time, the power motor 11 drives the test gear 18 on the test gear fixing plate 15 to rotate through the coupling 12 and the rotating shaft 14.

[0034] (3) The rotating test gear 18 rotates with the first load gear 204 and the second load gear 304 as the load center. When the required detection time is reached, the power motor 11 stops and the test gear 18 is removed horizontally for the next step of detection parameter collection and analysis.

[0035] Example 2

[0036] Based on Embodiment 1, the drive assembly 1 further includes at least two sets of test gear fixing plate screw grooves 16 symmetrically arranged on one side of the test gear fixing plate 15, and test gear fastening bolts 17 that fix the test gear 18 and the test gear fixing plate 15 through the test gear fixing plate screw grooves 16.

[0037] The test gear fastening bolt 17 facilitates the installation / removal of the test gear 18, and also facilitates the replacement of test gears 18 (test sample gears) of different sizes.

[0038] Example 3

[0039] Based on Embodiment 1, the first load component 2 further includes at least two sets of first threaded grooves 203 symmetrically arranged on one side of the first load gear fixing plate 202, and first fastening bolts 205 that fix the first load gear fixing plate 202 and the first load gear 204 through the first threaded grooves 203.

[0040] The first fastening bolt 205 facilitates the use of the first load gear 204, and also facilitates the replacement of the first load gear 204 with different sizes to match the test gear 18 (the sample gear to be tested) to complete the test.

[0041] Example 4

[0042] Based on Embodiment 1, the second load assembly 3 further includes at least two sets of second threaded grooves 303 symmetrically arranged on one side of the second load gear fixing plate 302, and second fastening bolts 305 that fix the second load gear fixing plate 302 and the second load gear 304 through the second threaded grooves 303.

[0043] The second fastening bolt 305 facilitates the use of the second load gear 304, and also facilitates the replacement of the second load gear 304 of different sizes to match the test gear 18 (the sample gear to be tested) to complete the test.

[0044] Example 5

[0045] Based on the above embodiments, the micro cycloidal pinwheel planetary reducer gear bending fatigue testing equipment also includes a first high-precision speed and torque sensor C and a second high-precision speed and torque sensor D, which are disposed on one end face of the load platform B and are used in conjunction with the first load shaft 201 and the second load shaft 301, respectively.

[0046] The first high-precision speed and torque sensor C and the second high-precision speed and torque sensor D are used in conjunction with an external measurement and control system (not shown in the figure, but they do not affect the disclosure of the technical solution of this application) to monitor the current speed and torque of the first load shaft 201 and the second load shaft 301, respectively, and to collect and record data, perform alarm self-checks and alarms, so as to carry out safe and efficient test control.

[0047] In addition, preferably, the test gear 18, the first load gear 204, and the second load gear 304 are the same size; the size of the test gear 18 is greater than or less than the size of the first load gear 204 and the second load gear 304, respectively; the first load gear 204 and the second load gear 304 are the same size; and the test gear 18, the first load gear 204, and the second load gear 304 are not the same size.

[0048] The above design structure improves the overall practicality of the equipment, and can be used for bending fatigue testing of test gears of different sizes and rapid testing of gears of different models.

[0049] It should be noted that, in this document, terms such as "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0050] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

Claims

1. A micro cycloidal pinwheel planetary reducer gear bending fatigue testing device, comprising a test bench (A), a load bench (B), a drive assembly (1), a first load assembly (2), and a second load assembly (3), characterized in that: The drive assembly (1) includes a motor base (10) disposed on the end face of the symmetrical center line at one end of the test bench (A), a power motor (11) disposed on the motor base (10), a coupling (12) disposed on the power motor (11), a first vertical bearing seat (13) disposed on the test bench (A) and located on one side of the motor base (10), a rotating shaft (14) disposed on the first vertical bearing seat (13) and connected at one end to the coupling (12), and a test gear fixing plate (15) disposed at the other end of the rotating shaft (14). The first load assembly (2) includes a set of second vertical bearing seats (200) symmetrically arranged on one side end face of the load platform (B), a first load shaft (201) arranged on the second vertical bearing seats (200), a first load gear fixing plate (202) arranged on one end face of the first load shaft (201), and a first load gear (204) mounted on the first load gear fixing plate (202); The second load assembly (3) includes a set of third vertical bearing seats (300) symmetrically arranged on the other end face of the load platform (B), a second load shaft (301) arranged on the third vertical bearing seat (300), a second load gear fixing plate (302) arranged on one end face of the second load shaft (301), and a second load gear (304) mounted on the second load gear fixing plate (302); The test gear (18) is mounted on the test gear fixing plate (15) and is arranged to mesh horizontally with the first load gear (204) and the second load gear (304) respectively.

2. The micro cycloidal pinwheel planetary reducer gear bending fatigue testing equipment according to claim 1, characterized in that: The drive assembly (1) further includes at least two sets of test gear fixing plate screw grooves (16) symmetrically arranged on one side of the test gear fixing plate (15), and test gear fastening bolts (17) that fix the test gear (18) and the test gear fixing plate (15) through the test gear fixing plate screw grooves (16).

3. The micro cycloidal pinwheel planetary reducer gear bending fatigue testing equipment according to claim 1, characterized in that: The first load assembly (2) further includes at least two sets of first threaded grooves (203) symmetrically arranged on one side of the first load gear fixing plate (202), and first fastening bolts (205) that fix the first load gear fixing plate (202) and the first load gear (204) through the first threaded grooves (203).

4. The micro cycloidal pinwheel planetary reducer gear bending fatigue testing device according to claim 1, characterized in that: The second load assembly (3) further includes at least two sets of second threaded grooves (303) symmetrically arranged on one side of the second load gear fixing plate (302), and second fastening bolts (305) that fix the second load gear fixing plate (302) and the second load gear (304) through the second threaded grooves (303).

5. The micro cycloidal pinwheel planetary reducer gear bending fatigue testing device according to claim 1, characterized in that: The micro cycloidal pinwheel planetary reducer gear bending fatigue testing equipment also includes a first high-precision speed and torque sensor (C) and a second high-precision speed and torque sensor (D) disposed on one end face of the load platform (B) and used in conjunction with the first load shaft (201) and the second load shaft (301) respectively.

6. The micro cycloidal pinwheel planetary reducer gear bending fatigue testing device according to claim 1, characterized in that: The test gear (18), the first load gear (204), and the second load gear (304) are of the same size.

7. The micro cycloidal pinwheel planetary reducer gear bending fatigue testing device according to claim 1, characterized in that: The dimensions of the test gear (18) are greater than or less than the dimensions of the first load gear (204) and the second load gear (304), respectively, and the dimensions of the first load gear (204) and the second load gear (304) are the same.

8. The micro cycloidal pinwheel planetary reducer gear bending fatigue testing device according to claim 1, characterized in that: The test gear (18), the first load gear (204), and the second load gear (304) are of different sizes.

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