Durability test equipment for harmonic reducer

Abstract

The utility model relates to the technical field of endurance life test of harmonic reducers, in particular to endurance life test equipment for harmonic reducers. The endurance life experiment equipment for the harmonic reducer comprises a workbench, a first moving carrier, a second moving carrier, a fixed carrier, a load device and a torque input mechanism, the first moving carrier, the second moving carrier and the fixed carrier are sequentially arranged at the upper end of the workbench at intervals, the torque input mechanism is installed on the first moving carrier, and the load device is installed on the first moving carrier. The second mobile carrier is used for installing a harmonic reducer to be detected, the load device is installed on the fixed carrier, the shaft end of an output shaft of the torque input mechanism is provided with the first torque detection device and is connected with an input shaft of the harmonic reducer through the first torque detection device, and an input shaft of the load device is used for being connected with an output shaft of the harmonic reducer. The device has the advantages of reasonable structural design, high test efficiency, stable and reliable test process and relatively low use cost.

Description

Technical Field

[0001] This utility model relates to the field of endurance life testing technology for harmonic reducers, and in particular to an endurance life testing device for harmonic reducers. Background Technology

[0002] Harmonic reducers have high requirements for durability, service life, and fatigue strength, resulting in demanding and lengthy testing. A single component's durability life test can require 6000 hours or even longer. Most traditional testing benches are complex in structure, expensive, and have stringent environmental requirements. Meeting the durability life test needs of multiple varieties and batches of harmonic reducers is costly.

[0003] Therefore, it is necessary to develop a durability life testing device for harmonic reducers to solve the above-mentioned technical problems. Utility Model Content

[0004] The technical problem to be solved by this utility model is to provide a durability life test device for harmonic reducers, which effectively overcomes the defects of the prior art.

[0005] The technical solution of this utility model to solve the above-mentioned technical problems is as follows:

[0006] A durability life testing device for a harmonic reducer includes a workbench, a first moving carrier, a second moving carrier, a fixed carrier, a load device, and a torque input mechanism. The first moving carrier, the second moving carrier, and the fixed carrier are arranged sequentially at intervals on the upper part of the workbench. The torque input mechanism is mounted on the first moving carrier. The second moving carrier is used to mount the harmonic reducer under test. The load device is mounted on the fixed carrier. The output shaft of the torque input mechanism is equipped with a first torque detection device, which is connected to the input shaft of the harmonic reducer. The input shaft of the load device is connected to the output shaft of the harmonic reducer.

[0007] Based on the above technical solution, the present invention can be further improved as follows.

[0008] Furthermore, the aforementioned torque input mechanism is a servo motor.

[0009] Furthermore, the aforementioned load device is a brake.

[0010] Furthermore, the aforementioned load device is a magnetic powder brake.

[0011] Furthermore, the input shaft of the aforementioned load device is equipped with a second torque detection device, and the output shaft of the aforementioned harmonic reducer is connected through the second torque detection device.

[0012] Furthermore, both the first torque detection device and the second torque detection device mentioned above are torque sensors.

[0013] Furthermore, the outer surface of the aforementioned harmonic reducer is equipped with a temperature detector and a vibration sensor.

[0014] Furthermore, it also includes a control host, which is connected to the torque input mechanism, the first torque detection device, the second torque detection device, the temperature detector, and the vibration sensor.

[0015] Furthermore, the workbench is provided with two parallel slides, the fixed carrier is located at one end of the two slides, the lower ends of the first moving carrier and the second moving carrier are respectively provided with sliders embedded in the two slides, and the lower ends of the first moving carrier and the second moving carrier are respectively equipped with locking bolts for screwing into the slides and abutting or separating from the bottom wall of the slides.

[0016] Furthermore, the aforementioned slide is a dovetail groove or a T-shaped groove, and the corresponding slider is a dovetail or T-shaped shape adapted to the aforementioned slide. The end of the aforementioned slide away from the aforementioned fixed carrier passes through the edge of the aforementioned worktable.

[0017] The advantages of this utility model are: reasonable structural design, high testing efficiency, stable and reliable testing process, and relatively low cost of use. Attached Figure Description

[0018] Figure 1 This is a three-dimensional structural view of the durability life test equipment for harmonic reducers according to the present invention.

[0019] Figure 2 This is a front view of the structure of the durability life test equipment for harmonic reducers according to this utility model;

[0020] Figure 3 Top view of the structure of the durability life test equipment for harmonic reducers according to this utility model.

[0021] The attached diagram lists the components represented by each number as follows:

[0022] 1. Workbench; 2. First moving carrier; 3. Second moving carrier; 4. Fixed carrier; 5. Loading device; 6. Torque input mechanism; 7. Harmonic reducer; 11. Slide. Detailed Implementation

[0023] The principles and features of this utility model are described below with reference to the accompanying drawings. The examples given are only for explaining this utility model and are not intended to limit the scope of this utility model.

[0024] Example

[0025] like Figure 1 , 2 As shown in Figure 3, the durability life testing equipment for harmonic reducers in this embodiment includes a workbench 1, a first moving carrier 2, a second moving carrier 3, a fixed carrier 4, a load device 5, and a torque input mechanism 6. The first moving carrier 2, the second moving carrier 3, and the fixed carrier 4 are arranged sequentially at intervals on the upper end of the workbench 1. The torque input mechanism 6 is mounted on the first moving carrier 2. The second moving carrier 3 is used to mount the harmonic reducer 7 to be tested. The load device 5 is mounted on the fixed carrier 4. The output shaft of the torque input mechanism 6 has a first torque detection device at its shaft end, and the input shaft of the harmonic reducer 7 is connected through the first torque detection device. The input shaft of the load device 5 is used to connect with the output shaft of the harmonic reducer 7.

[0026] In the durability life test equipment for harmonic reducers in this embodiment, the first mobile carrier 2, the second mobile carrier 3, and the fixed carrier 4 are merely frames for mounting the fixed load device 5, the torque input mechanism 6, and the harmonic reducer 7 to be tested. The specific structure is not limited, and a conventional base with a mounting bracket can be used, as long as the first mobile carrier 2, the second mobile carrier 3, and the fixed carrier 4 are stably assembled on their respective frames.

[0027] The working process of the durability life test equipment used for harmonic reducers is as follows:

[0028] 1) Install the harmonic reducer 7 to be tested on the second moving vehicle 3;

[0029] 2) Move the position of the second moving carrier 3 and connect the output shaft of the harmonic reducer 7 and the input shaft of the load device 5 through coupling a;

[0030] 3) Initially fix the second moving carrier 3 to the workbench 1, and fix the first torque detection device to the output shaft end of the torque input mechanism 6;

[0031] 4) Move the first moving carrier 2 and connect the input shaft of the harmonic reducer 7 to the first torque detection device through the aforementioned coupling b;

[0032] 5) Initially fix the first mobile carrier 2 to the workbench 1;

[0033] 6) With the load at zero, start the torque input mechanism 6, stop after 30 seconds, and securely lock the second moving carrier 3 and the worktable 1, as well as the first moving carrier 2 and the worktable 1.

[0034] 7) Adjust the load device 5 to the specified range, start the torque input mechanism 6, adjust to the specified output torque and speed according to the test requirements, monitor the running time, surface temperature of the harmonic reducer 7 under test, input shaft torque, input shaft speed and vibration of the harmonic reducer 7, and start the experiment.

[0035] 8) During equipment operation, the speed and output torque of the torque input mechanism 6 can be adjusted as needed. The torque, surface temperature, and vibration of the harmonic reducer 7 under test are monitored in real time to ensure they are within the specified range. If values ​​exceed the range, the equipment will alarm and stop operation. The power and output shaft speed of the torque input mechanism 6 are monitored in real time, as well as the total experimental time. When the experimental time reaches the set value, the equipment automatically stops and indicates that the experiment is complete, transmitting relevant experimental data to the industrial control computer. Professional experimental software tracks the experimental data in real time, displaying the experimental process and data storage. Overall, the structure is reasonably designed, with high testing efficiency, stable and reliable testing process, and relatively low operating costs.

[0036] In this embodiment, the torque input mechanism 6 uses a servo motor of an appropriate model.

[0037] In this embodiment, the load device 5 is a brake, specifically a magnetic powder brake of a suitable model.

[0038] In a preferred embodiment, the input shaft end of the load device 5 is equipped with a second torque detection device, and the output shaft of the harmonic reducer 7 is connected through the second torque detection device.

[0039] In the above implementation scheme, the second torque detection device can participate in detecting the torque of the load device 5 during the commissioning process, and can be removed before the formal experiment.

[0040] In this embodiment, both the first torque detection device and the second torque detection device use a torque sensor of a compatible model. The torque sensor is a product of existing technology and will not be described in detail here.

[0041] In this embodiment, a temperature detector and a vibration sensor are mounted on the outer surface of the harmonic reducer 7. These temperature detector and vibration sensor are used to accurately test the surface temperature and vibration of the harmonic reducer 7 during the experiment.

[0042] Specifically, the temperature detector can use a temperature sensor of an appropriate model.

[0043] It is important to emphasize that, in addition to measuring torque, the torque sensor can also simultaneously measure the rotational speed of the shaft it is connected to. This is existing technology and will not be elaborated upon here.

[0044] In a preferred embodiment, the system also includes a control host, which is connected to the torque input mechanism 6, the first torque detection device, the second torque detection device, the temperature detector, and the vibration sensor.

[0045] In the above implementation scheme, the data or information measured by the first torque detection device, the second torque detection device, the temperature detector, and the vibration sensor are all fed back to the control host, which displays, tracks, and stores the data. Simultaneously, the overall operation of the equipment is completed by the control host in conjunction with the various monitoring facilities. After the operator sets the relevant parameters on each monitoring facility, fully automatic operation can be initiated. This allows the equipment to achieve unattended, fully automatic operation; if no abnormalities occur during the entire operation, no operator intervention is required.

[0046] In this embodiment, the control host is a conventionally compatible PLC industrial computer. This control host can be equipped with an emergency stop device; if an abnormality occurs at any time and the emergency stop switch is pressed, all operations will cease.

[0047] It should be noted that in this embodiment, the model of the load device 5 is adjustable, that is, the load size is adjustable, so as to be suitable for experiments with different models of harmonic reducers.

[0048] In a preferred embodiment, the workbench 1 is provided with two parallel slides 11, the fixed carrier 4 is disposed at one end of the two slides 11, the lower ends of the first moving carrier 2 and the second moving carrier 3 are respectively provided with sliders embedded in the two slides 11, and the lower ends of the first moving carrier 2 and the second moving carrier 3 are respectively equipped with locking bolts c for screwing into the slides 11 and abutting or separating from the bottom wall of the slides 11.

[0049] In the above implementation scheme, after loosening the locking bolts, the first moving carrier 2 and the second moving carrier 3 can move along the length of the slide 11. After moving to the target position, the lower ends of the first moving carrier 2 and the second moving carrier 3 can be fixed to the slide 11 by tightening the locking bolts. This allows the distance between the first moving carrier 2 and the second moving carrier 3, as well as the relative distance between them and the fixed carrier 4, to accommodate the installation and testing of different models of harmonic reducers 7.

[0050] In this embodiment, the slide groove 11 is a dovetail groove or a T-shaped groove, and the corresponding slider is a dovetail or T-shaped shape adapted to the slide groove 11. The end of the slide groove 11 away from the fixed carrier 4 passes through the edge of the worktable 1. This design prevents the slider from vertically disengaging from the slide groove 11, avoids the first moving carrier 2 and the second moving carrier 3 from vertically disengaging from the worktable 1, and allows it to slide along the length of the slide groove 11 without deviating.

[0051] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0052] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this utility model, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0053] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; 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; they can refer to the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0054] In this utility model, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0055] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0056] Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of the present invention.

Claims

1. A durability life test apparatus for a harmonic reducer, characterized by: The device includes a workbench (1), a first moving carrier (2), a second moving carrier (3), a fixed carrier (4), a load device (5), and a torque input mechanism (6). The first moving carrier (2), the second moving carrier (3), and the fixed carrier (4) are arranged sequentially at intervals on the upper end of the workbench (1). The torque input mechanism (6) is mounted on the first moving carrier (2). The second moving carrier (3) is used to mount the harmonic reducer (7) to be tested. The load device (5) is mounted on the fixed carrier (4). The output shaft of the torque input mechanism (6) is equipped with a first torque detection device, and the input shaft of the harmonic reducer (7) is connected through the first torque detection device. The input shaft of the load device (5) is used to connect with the output shaft of the harmonic reducer (7).

2. The durable life test apparatus for a harmonic reducer according to claim 1, characterized by: The torque input mechanism (6) is a servo motor.

3. The durable life test apparatus for a harmonic reducer according to claim 1, characterized by: The load device (5) is a brake.

4. The durable life test apparatus for a harmonic reducer according to claim 3, characterized by: The load device (5) is a magnetic powder brake.

5. The durable life test apparatus for a harmonic reducer according to claim 1, characterized by: The input shaft of the load device (5) is equipped with a second torque detection device, and the output shaft of the harmonic reducer (7) is connected through the second torque detection device.

6. A durable life test apparatus for a harmonic reducer according to claim 5, characterized in that: Both the first torque detection device and the second torque detection device are torque sensors.

7. A durable life test apparatus for a harmonic reducer according to claim 6, characterized in that: The outer surface of the harmonic reducer (7) under test is equipped with a temperature detector and a vibration sensor.

8. The durable life test apparatus for a harmonic reducer according to claim 7, characterized by: It also includes a control host, which is connected to the torque input mechanism (6), the first torque detection device, the second torque detection device, the temperature detector and the vibration sensor respectively.

9. A durable life test apparatus for a harmonic reducer according to any one of claims 1 to 8, characterized in that: The workbench (1) is provided with two parallel slides (11). The fixed carrier (4) is located at one end of the two slides (11). The lower ends of the first moving carrier (2) and the second moving carrier (3) are respectively provided with sliders embedded in the two slides (11). The lower ends of the first moving carrier (2) and the second moving carrier (3) are respectively equipped with locking bolts for screwing into the slides (11) and abutting or separating from the bottom wall of the slides (11).

10. The durable life test apparatus for a harmonic reducer according to claim 9, wherein: The slide (11) is a dovetail groove or a T-shaped groove, and the corresponding slider is a dovetail or T-shaped shape adapted to the slide (11). The end of the slide (11) away from the fixed carrier (4) passes through the edge of the worktable (1).

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