Testing tool for obstacle crossing assembly of sweeper

Abstract

A testing tool for obstacle crossing assemblies of a sweeper comprises a testing table, avoiding grooves are formed in the positions, corresponding to driving wheels of the sweeper, of the testing table, and bearing supporting plates are arranged at the lower ends of the grooves and connected with Z-direction moving mechanisms; an X-direction translation mechanism is arranged on one side of the avoiding groove and can drive an encoder and a tachometer wheel to be meshed with the driving wheel, and a detection assembly is arranged on the other side of the avoiding groove and comprises a photoelectric detection part, a first distance measuring sensor and a second distance measuring sensor which are used for detecting the initial position, the open state and the limit position of the obstacle crossing wheel respectively. The detection assembly is installed on the Y-direction moving mechanism. A jacking mechanism is arranged below the test board to fix the sweeper, and the bearing supporting plate is provided with a limiting block to prevent the driving wheel from deviating. According to the utility model, through cooperative work of the three-axis motion mechanism, detection of the power performance of the driving wheel and the motion state of the obstacle crossing wheel is realized, sub-item test errors are eliminated, the test efficiency and precision are improved, and the device is adaptive to different models. The device has the advantages of compact structure, comprehensive detection, strong anti-interference performance and the like, and is suitable for automatic testing of the obstacle crossing assembly of the sweeper.

Description

Technical Field

[0001] This utility model relates to the technical field of sweeper testing equipment, and in particular to a testing fixture for the obstacle crossing component of a sweeper. Background Technology

[0002] With the increasing popularity of smart homes, robotic vacuum cleaners have become an essential cleaning tool for modern families. In actual use, robotic vacuum cleaners need to overcome obstacles such as carpets, thresholds, and power cords, so their obstacle-crossing ability directly affects the product's practicality and user experience. Currently, most robotic vacuum cleaners on the market use a height-adjustable obstacle-crossing wheel structure. Because the height of obstacles varies significantly between different households, the reliability of the obstacle-crossing components, the speed of the drive wheels, and the lifting stroke of the obstacle-crossing wheels all require rigorous testing to ensure stable operation of the product in real-world environments.

[0003] Existing testing methods for sweeping machines mainly rely on manual visual inspection or simple mechanical testing, which has the following problems:

[0004] Low testing accuracy: Traditional methods are difficult to accurately measure the lifting height, limit position, and speed of the drive wheel of the obstacle crossing wheel, resulting in inaccurate test data and affecting product optimization.

[0005] Insufficient automation: Manual testing is inefficient and cannot meet the testing needs of mass production, and the test results are easily affected by subjective factors.

[0006] Incomplete test coverage: Existing test equipment usually only targets a single parameter (such as obstacle clearance height or drive wheel speed), and lacks means to test comprehensive performance such as obstacle clearance wheel trajectory and drive wheel dynamic response.

[0007] Therefore, in view of the shortcomings of the existing technology, it is necessary to design a test fixture for the obstacle-crossing component of the sweeping robot to solve the above problems.

[0008] It should be noted that the above introduction to the technical background is only for the purpose of providing a clear and complete explanation of the technical solution of this utility model and facilitating the understanding of those skilled in the art. It should not be assumed that the above content is known to those skilled in the art simply because it has been described in the background section of this utility model. Utility Model Content

[0009] To overcome the shortcomings of the prior art, the present invention discloses a testing fixture for the obstacle-crossing component of a sweeper, so as to achieve comprehensive testing of the power performance of the drive wheel, the motion state of the obstacle-crossing wheel and the extreme position, thereby improving the product testing efficiency and reliability.

[0010] This utility model discloses a testing fixture for a sweeper obstacle crossing component, including a test platform. The test platform is provided with an obstacle avoidance groove that penetrates its thickness at the position corresponding to the drive wheel of the sweeper. A bearing plate is provided at the lower end of the obstacle avoidance groove, and a Z-axis moving mechanism is connected to the lower end of the bearing plate.

[0011] An X-axis translation mechanism is provided on one side of the lower end of the clearance groove. The moving end of the X-axis translation mechanism is connected to an encoder, and the detection end of the encoder is provided with a speed measuring wheel. The X-axis translation mechanism is used to drive the speed measuring wheel to dock with the drive wheel of the sweeper.

[0012] A detection component is provided on the opposite side of the clearance groove. The detection component includes:

[0013] Photoelectric detection device used to detect the initial position of obstacle-crossing wheels.

[0014] The first ranging sensor is used to measure whether the left side is in place when the obstacle-crossing wheel is open.

[0015] A second ranging sensor used to measure whether the right side of the obstacle-crossing wheel is in place when it is in the extreme open state;

[0016] The photoelectric sensor, the first ranging sensor, and the second ranging sensor are all mounted on the mounting frame, and the lower end of the mounting frame is connected to the Y-axis moving mechanism.

[0017] The above descriptions of X, Y, and Z directions are to distinguish the relative displacement directions of the moving mechanism, and do not refer to any specific direction.

[0018] Preferred technical solution: At least two lifting mechanisms are provided under the test platform. The front end of the lifting mechanism can pass through the test platform and connect with the positioning hole at the bottom of the sweeper. This is used to fix the sweeper during the test of the drive wheel of the sweeper and prevent the sweeper from tilting to the side.

[0019] Preferred technical solution: A limiting block is provided at the upper end of the support plate to limit the displacement of the sweeper's drive wheel.

[0020] Preferred technical solution: The outer periphery of the speed measuring wheel is provided with a toothed surface structure that matches the drive wheel of the sweeper, so as to prevent the speed measuring wheel from slipping on the connection surface between the drive wheel and the sweeper.

[0021] Preferred technical solution: The Z-axis moving mechanism is any one of a pneumatic cylinder, a hydraulic cylinder, and an electric cylinder.

[0022] Preferred technical solution: Two symmetrical third distance sensors are installed above the test platform to measure whether the two sides of the sweeper are balanced.

[0023] Due to the application of the above technical solution, the beneficial effects of this utility model compared with the prior art are as follows:

[0024] 1) The drive wheel speed / torque is quantified by encoder and speed measuring wheel, and the position of obstacle crossing wheel is monitored in real time by distance measuring sensor and photoelectric detection. A single test can complete the coordinated evaluation of power output and mechanical motion, avoiding the accumulation of errors caused by separate tests.

[0025] 2) The gear teeth of the speed measuring wheel mesh with the drive wheel to eliminate the risk of slippage during testing and ensure that the speed and torque data reflect the real working conditions.

[0026] 3) By using X-axis translation mechanism, Y-axis movement mechanism and Z-axis movement mechanism to avoid interference between different detection components, the automatic detection of multiple items can be realized, thereby improving detection efficiency and accuracy.

[0027] 4) By replacing the speed measuring wheel with different tooth pitches and adjusting the height of the mounting frame and the position of the lifting mechanism, it can be compatible with testing different models of sweeping machines. Attached Figure Description

[0028] To more clearly illustrate the specific embodiments of this utility model or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0029] Figure 1 This is a schematic diagram of the structure of a test fixture for an obstacle-crossing component of a sweeper according to the present invention;

[0030] Figure 2 This is a schematic diagram of the test bench in this utility model;

[0031] Figure 3 This is a schematic diagram of the encoder structure in this utility model;

[0032] Figure 4 This is a schematic diagram of the detection component in this utility model.

[0033] In the attached figures above, 1. Test stand; 11. Clearance groove; 12. Support plate; 13. Z-axis moving mechanism; 14. Lifting mechanism; 15. Limit block; 16. Third distance sensor; 2. X-axis translation mechanism; 3. Encoder; 31. Speed ​​measuring wheel; 4. Detection component; 41. Detection photoelectric sensor; 42. First distance sensor; 43. Second distance sensor; 44. Mounting bracket; 45. Y-axis moving mechanism. Detailed Implementation

[0034] The following specific embodiments illustrate the implementation of this utility model. Those skilled in the art can easily understand other advantages and effects of this utility model from the content disclosed in this specification.

[0035] It should be noted that the terms "first," "second," etc., in the specification, claims, and accompanying drawings of this application are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be used interchangeably where appropriate for the description of embodiments of this application herein. Furthermore, the terms "comprising" and "having," and their synonyms, are intended to cover non-exclusive inclusion; for example, a process, method, system, product, or apparatus that comprises a series of steps or units is not necessarily limited to those steps or units explicitly listed, but may include other steps or units not explicitly listed or inherent to such processes, methods, products, or apparatus.

[0036] In this application, the terms "upper," "lower," "left," "right," "front," "rear," "top," "bottom," "inner," "outer," "middle," "vertical," "horizontal," "lateral," and "longitudinal" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. These terms are primarily for the purpose of better describing the present invention and its embodiments, and are not intended to limit the indicated device, element, or component to having a specific orientation, or to be constructed and operated in a specific orientation.

[0037] Furthermore, in addition to indicating location or positional relationship, some of the aforementioned terms may also have other meanings. For example, the term "above" may also be used in some cases to indicate a certain dependency or connection relationship. Those skilled in the art can understand the specific meaning of these terms in this utility model according to the specific circumstances.

[0038] Furthermore, the terms "installation," "setting," "equipped with," "connection," "linking," "fitting," and "fitting" should be interpreted broadly. For example, "connection" can be a fixed connection, a detachable connection, or an integral structure; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, or an internal connection between two devices, components, or parts. Similarly, "fitting" can mean completely or partially fitted. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0039] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other. This application will now be described in detail with reference to the accompanying drawings and embodiments.

[0040] Example:

[0041] like Figure 1As shown, this utility model discloses a test fixture for a sweeper obstacle crossing component, used to detect the rotational speed of the drive wheel, the unfolding state of the obstacle crossing wheel, and the accuracy of the extreme position of the sweeper during obstacle crossing. It includes a test bench 1.

[0042] like Figure 1 and Figure 2 As shown, the test platform 1 has a through-hole 11 corresponding to the position of the sweeper's drive wheel. The width of the through-hole 11 is larger than the diameter of the sweeper's drive wheel, allowing the drive wheel to rotate freely without interference. A support plate 12 is provided at the lower end of the through-hole 11 to support the sweeper and prevent it from being suspended in the air, which could lead to testing errors. The lower end of the support plate 12 is connected to a Z-axis moving mechanism 13, which can be driven by a servo electric cylinder to achieve precise lifting and lowering adjustments to meet the height requirements of different sweeper models.

[0043] like Figure 1 and Figure 3 As shown, an X-axis translation mechanism 2 is installed on one side of the lower end of the clearance groove 11. The moving end of the X-axis translation mechanism 2 is connected to an encoder 3. The detection end of the encoder 3 is equipped with a speed measuring wheel 31. When the sweeper's drive wheel rotates, the speed measuring wheel rotates accordingly. The encoder 3 records the rotation speed data in real time and analyzes it through PLC or host computer software to determine whether the accuracy and stability of the drive wheel's rotation speed are up to standard. The X-axis translation mechanism 2 uses a precision linear guide rail and a servo motor drive to ensure that the speed measuring wheel 31 can move smoothly and accurately dock with the sweeper's drive wheel. The outer circumference of the speed measuring wheel 31 is provided with a toothed surface structure that matches the sweeper's drive wheel to increase friction, prevent slippage, and ensure the accuracy of rotation speed detection.

[0044] like Figure 1 and Figure 4 As shown, a detection component 4 is provided on the opposite side of the obstacle avoidance groove 11 to detect the deployment state of the obstacle-crossing wheels. The detection component 4 includes:

[0045] Photoelectric sensor 41: Used to detect whether the bottom of the obstacle-crossing wheel is in place and to determine whether it is in the initial closed state.

[0046] First distance sensor 42: A laser distance sensor is used to measure the distance between the left edge of the obstacle-crossing wheel and the first distance sensor 42 when the obstacle-crossing wheel is in its normal deployed state, and to calculate whether the obstacle-crossing wheel exceeds the allowable range based on trigonometric functions.

[0047] Second ranging sensor 43: Also uses a laser ranging sensor. When the obstacle-crossing wheel is in its extreme deployment state, it measures the distance between the right edge of the obstacle-crossing wheel and the second ranging sensor 43, and calculates whether the obstacle-crossing wheel exceeds the allowable range based on trigonometric functions.

[0048] All of the above sensors are mounted on an adjustable mounting bracket 44. The lower end of the mounting bracket 44 is connected to a Y-axis moving mechanism 45, which allows the detection component 4 to move along the Y-axis to adapt to the installation position of the obstacle-crossing wheels of different sweepers.

[0049] like Figure 1 and Figure 2 As shown, at least two sets of lifting mechanisms 14 are provided under the test platform 1. The front end of the lifting mechanism 14 can pass through the test platform 1 and connect with the positioning hole at the bottom of the sweeper. The front end of the lifting rod adopts a conical guide head, which can automatically align with the positioning hole at the bottom of the sweeper to ensure that the equipment does not shift during the test.

[0050] refer to Figure 1 , Figure 2 , Figure 3 and Figure 4 As shown, the usage method and principle of this utility model are described below:

[0051] Positioning stage: Place the sweeper on the support plate 12, and the lifting mechanism 14 will automatically rise and insert into the positioning hole at the bottom of the sweeper to ensure that the equipment is centered and fixed.

[0052] Obstacle wheel detection: The Y-axis moving mechanism 45 drives the mounting frame 44 to move towards the test platform 1, so that the first distance sensor 42 and the second distance sensor 43 are below the projection of the obstacle wheel of the sweeper; the detection photoelectric 41 confirms whether the obstacle wheel is initially closed; the sweeper enters the obstacle-crossing mode, the obstacle wheel unfolds, and the first distance sensor 42 detects the unfolded position on the left; the obstacle wheel continues to unfold to the limit position, and the second distance sensor 43 detects the limit position on the right.

[0053] Drive wheel speed measurement: Z-axis moving mechanism 13 drives the bearing plate 12 to descend, X-axis translation mechanism 2 drives the speed measuring wheel 31 to contact the drive wheel, and encoder 3 records the speed data;

[0054] Data analysis: All test data is uploaded to the industrial control computer, which automatically determines whether the data is qualified and generates a test report.

[0055] like Figure 1 and Figure 2 As shown, a limiting block 15 is provided at the upper end of the support plate 12 to fix the front and rear position of the sweeper and prevent it from sliding during the test.

[0056] like Figure 1 and Figure 2 As shown, the Z-axis moving mechanism 13 can be any one of a pneumatic cylinder, a hydraulic cylinder, or an electric cylinder.

[0057] like Figure 1 and Figure 2As shown, two symmetrical third distance sensors 16 are provided above the test platform 1. When the support plate 12 is lowered, the lifting mechanism 14 is also kept in a lowered state. After the sweeper reaches balance by its own counterweight, the two symmetrical third distance sensors 16 measure whether the height difference between the left and right sides of the sweeper is within the specified range, thereby judging whether the assembly of the sweeper is qualified.

[0058] Finally, it should be noted that the above are merely preferred embodiments of the present utility model and are not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A sweeping machine obstacle crossing assembly test tool comprising a test table (1), characterized in that: The test bench (1) is provided with a clearance groove (11) that extends through its thickness at the position corresponding to the drive wheel of the sweeper. The lower end of the clearance groove (11) is provided with a support plate (12), and the lower end of the support plate (12) is connected to a Z-axis moving mechanism (13). An X-axis translation mechanism (2) is provided on one side of the lower end of the clearance groove (11). The moving end of the X-axis translation mechanism (2) is connected to the encoder (3). The detection end of the encoder (3) is provided with a speed measuring wheel (31). The X-axis translation mechanism (2) is used to drive the speed measuring wheel (31) to connect with the drive wheel of the sweeper. A detection component (4) is provided on the opposite side of the clearance groove (11), and the detection component (4) includes: Photoelectric sensor (41) used to detect the initial position of the obstacle-crossing wheel. The first ranging sensor (42) is used to measure whether the left side is in place when the obstacle crossing wheel is open. The second distance sensor (43) is used to measure whether the right side is in place when the obstacle wheel is in the extreme open state. The detection photoelectric sensor (41), the first ranging sensor (42), and the second ranging sensor (43) are all mounted on the mounting frame (44), and the lower end of the mounting frame (44) is connected to the Y-axis moving mechanism (45). 2.The obstacle surmounting component test tool of the sweeping machine according to claim 1, wherein: At least two lifting mechanisms (14) are provided below the test platform (1), and the front end of the lifting mechanism (14) can pass through the test platform (1) and connect with the positioning hole at the bottom of the sweeper. 3.The obstacle surmounting component test tool of the sweeping robot according to claim 1, wherein: The upper end of the bearing plate (12) is provided with a limiting block (15).

4. The test tool for the obstacle-surmounting assembly of the robot sweeper according to claim 1, characterized in that: The speed measuring wheel (31) has a toothed surface structure on its outer periphery that matches the drive wheel of the sweeper.

5. The test tool for the obstacle-surmounting assembly of the robot sweeper according to claim 1, characterized in that: The Z-axis moving mechanism (13) is any one of a pneumatic cylinder, a hydraulic cylinder, and an electric cylinder.

6. The test tool for the obstacle-surmounting assembly of the robot sweeper according to claim 1, characterized in that: Two symmetrical third ranging sensors (16) are provided above the test stand (1).

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