Baby carriage speed reducer detection equipment and detection method thereof

Abstract

The invention relates to the field of speed reducer detection, in particular to baby carriage speed reducer detection equipment and a detection method thereof.The baby carriage speed reducer detection equipment comprises a detection table, and a positioning assembly used for positioning a speed reducer is arranged at the top end of the detection table; the first sliding frame is driven by a first electric cylinder and slides at the top end of the detection table, and a contact part is arranged on the side wall of the first sliding frame and used for making contact with a shell of the speed reducer; and the vibration sensor is arranged on the contact component and is used for detecting a vibration signal of the shielding case. By arranging the vibration sensor, the sound sensor and the spray head, the controller controls the spray head to spray marks with different colors on the output shaft of the speed reducer based on vibration signals and sound signals, the abnormal position of the worm gear can be quickly found according to extension lines of the color marks, and meanwhile meshing abnormity is jointly detected based on the sound signals and the vibration signals; the detection precision is improved.

Description

Technical Field

[0001] The present invention relates to the field of reducer detection, and particularly to a detection device and a detection method for a baby carriage reducer. Background Art

[0002] As one of the important components of a baby carriage, a reducer is an independent component composed of gear transmission, worm transmission, or gear-worm transmission enclosed in a rigid housing, and is commonly used as a speed reduction transmission device between a prime mover and a working machine. Since the main users of baby carriages are children, the baby carriage reducer needs to have high safety and reliability to ensure that no faults occur during use and to avoid harm to children. Therefore, when manufacturing a reducer, it is necessary to detect the reducer, such as whether the worm and worm gear in the reducer mesh normally.

[0003] In the prior art, a noise detection device is commonly used to detect the meshing state of the worm and worm gear in the reducer. For example, the utility model patent with the publication number CN202092871U discloses a noise detection device for the main reducer assembly of an automobile rear axle, which includes a vibration sensor and a control cabinet that processes, displays, and stores vibration information through operating software. It also includes a vertical power source connected to the input shaft of the rear axle main reducer and a bridge housing package that mounts the rear axle main reducer on a horizontal base. The vibration sensor is a horizontal and vertical vibration sensor provided on the rear axle main reducer.

[0004] The above case has the following defects: after detecting the reducer and determining whether the worm and worm gear in the reducer mesh abnormally, it is necessary to disassemble the abnormal reducer and reprocess the abnormally meshing part. Although the above detection device can detect whether the worm and worm gear in the reducer mesh abnormally, it does not mark the abnormal part, thus increasing the difficulty of subsequent processing.

[0005] Therefore, the present invention provides a detection device and a detection method for a baby carriage reducer to solve the above problems. Summary of the Invention

[0006] To achieve the above object, the technical solution adopted by the present invention is as follows: A detection device for a baby carriage reducer, comprising:

[0007] A detection table, on the top of which a positioning component for positioning the reducer is provided;

[0008] A first sliding frame, which is driven by a first electric cylinder and slidably arranged on the top of the detection table. A contact component is provided on the side wall of the first sliding frame for contacting the outer shell of the reducer;

[0009] A vibration sensor, which is arranged on the contact component for detecting the vibration signal of the shield;

[0010] A second sliding frame, which is driven by a second electric cylinder and is slidably arranged on the top of the detection table. A spray head is arranged on the side wall of the second sliding frame corresponding to the meshing position of the worm and worm gear in the speed reducer.

[0011] A controller, which is based on the vibration signal. When the vibration signal is abnormal, the controller controls the spray head to spray the marking liquid onto the surface of the output shaft of the speed reducer.

[0012] Preferably, the contact component includes:

[0013] A connecting rod, which is fixedly connected to the side wall of the first sliding frame;

[0014] A shielding cover, which is fixed at the end of the connecting rod. A sound sensor is arranged inside the shielding cover, and the sound sensor is used to detect the sound signal when the worm and worm gear in the speed reducer mesh.

[0015] The vibration sensor is arranged on the outer side wall of the shielding cover;

[0016] The controller is based on the sound signal. When the sound signal is abnormal, the controller controls the spray head to spray the marking liquid onto the surface of the output shaft of the speed reducer.

[0017] Preferably, it further includes:

[0018] A mounting frame, which is fixedly connected to the side wall of the second sliding frame;

[0019] An annular fixing plate, which is rotatably connected to the side wall of the mounting frame corresponding to the position of the output shaft of the speed reducer. An annular magnetic grating ruler is fixedly connected to the outer side wall of the annular fixing plate;

[0020] A connecting component, which enables the annular fixing plate to rotate synchronously with the output shaft of the speed reducer;

[0021] A reading head, which is fixedly connected to the side wall of the mounting frame corresponding to the meshing position of the worm and worm gear in the speed reducer. The reading head is used to record the position information of the annular magnetic grating ruler in real time;

[0022] A timer, which is fixed on the mounting frame. When the speed reducer starts, the timer starts timing;

[0023] The controller calculates and adjusts the rotational speed of the output shaft of the speed reducer based on the time information of the timer and the position information recorded by the reading head.

[0024] Preferably, it further includes:

[0025] An arc-shaped fixing frame, which is fixedly connected to the end of the mounting frame;

[0026] An arc-shaped track, the arc-shaped track is opened on an arc-shaped fixing frame, and the arc-shaped track is concentric with the output shaft of the speed reducer;

[0027] An arc-shaped mounting plate, the arc-shaped mounting plate is slidably connected to the inner side wall of the arc-shaped track, and the nozzle is fixedly connected to the arc-shaped mounting plate;

[0028] A position adjusting component, the position adjusting component is used to adjust the position of the arc-shaped mounting plate on the arc-shaped track to compensate for the error of the marking position.

[0029] Preferably, the position adjusting component includes:

[0030] Two arc-shaped racks, the two arc-shaped racks are symmetrically and fixedly connected to the side wall of the arc-shaped mounting plate;

[0031] Two gears, the two gears are respectively meshed with the two arc-shaped racks, the two gears share the same rotating shaft, and the rotating shaft penetrates through the outer side wall of the arc-shaped fixing frame and is rotatably connected to the arc-shaped fixing frame;

[0032] A self-locking motor, the self-locking motor is fixedly connected to the outer side wall of the arc-shaped fixing frame, and the output shaft of the self-locking motor is fixedly connected to the rotating shaft.

[0033] Preferably, the connecting component includes:

[0034] Two arc-shaped clamping plates, the two arc-shaped clamping plates are symmetrically and slidably connected to the side wall of the end of the annular fixing plate, and a spring is fixedly connected between the arc-shaped clamping plate and the annular fixing plate;

[0035] Two friction pads, the two friction pads are fixedly connected to the inner wall of the arc-shaped clamping plate;

[0036] Four electromagnets, the four electromagnets are respectively symmetrically and fixedly connected to the groove of the side wall of the arc-shaped clamping plate.

[0037] Preferably, the nozzle is flat, and the long side of the nozzle is parallel to the output shaft of the speed reducer.

[0038] Preferably, the nozzle is internally provided with a first nozzle and a second nozzle, a first pipe communicating with the first nozzle and a second pipe communicating with the second nozzle are fixed at the top of the nozzle, the first pipe is connected to an external first liquid pump through a pipeline, and the second pipe is connected to an external second liquid pump through a pipeline.

[0039] To solve the above problems, the present invention also proposes a detection method for a baby carriage speed reducer, including the following steps:

[0040] S1: Calibrate the position of the nozzle;

[0041] S2: Place the speed reducer on the detection table and position it through the positioning component;

[0042] S3: Detect the internal sound signal of the speed reducer and the vibration signal of the speed reducer housing through a sound sensor and a vibration sensor;

[0043] S4: When an abnormality occurs based on the sound signal and vibration information, the controller controls the nozzle to spray marks of different colors on the output shaft of the speed reducer;

[0044] S5: Determine the abnormal area of the worm wheel according to the extension line of the mark.

[0045] Preferably, the S1 specifically includes the following steps:

[0046] S101: Read the position information of the circular magnetic grating ruler in real time through a reading head and feedback it to the external display screen;

[0047] S102: The external display screen displays different colors at the corresponding position information according to the sound signal and vibration signal, with abnormal displayed in red and normal displayed in green;

[0048] S103: When an abnormality occurs based on the sound signal and vibration information, the controller controls the nozzle to spray marks of different colors on the output shaft of the speed reducer;

[0049] S104: Adjust the spraying position of the nozzle through the position adjustment component so that the extension line of the mark on the output shaft of the speed reducer is consistent with the position of the red mark on the external display screen.

[0050] Compared with the prior art, the present invention has the following beneficial effects:

[0051] First, by setting a vibration sensor, a sound sensor and a nozzle, the controller controls the nozzle to spray marks of different colors on the output shaft of the speed reducer based on the vibration signal and the sound signal, which is convenient for quickly finding the abnormal position of the worm wheel according to the extension line of the color mark. At the same time, the combined detection of meshing abnormality based on the sound signal and the vibration signal improves the detection accuracy.

[0052] Second, by setting a circular magnetic grating ruler, a reading head and a timer, when the output shaft of the speed reducer rotates, the arc-shaped fixing plate drives the circular magnetic grating ruler to rotate, and the timer starts timing. The controller calculates and adjusts the rotational speed of the output shaft of the speed reducer based on the position information recorded by the timer and the reading head, ensuring that the output shaft of the speed reducer can maintain the same rotational speed each time the speed reducer is detected, thereby helping to reduce the detection error.

[0053] III. By setting an arc track and a position adjustment component, the present invention starts the speed reducer, causing the output shaft of the speed reducer to rotate only one circle. During this process, the position information of the annular magnetic grating ruler is read in real time by the reading head and fed back to the external display screen. At the same time, the sound sensor and the vibration sensor detect the internal sound signal and vibration signal of the speed reducer in real time. When an abnormality occurs, a red mark will be displayed at the corresponding position information on the external display screen, and a green mark will be displayed otherwise. After the detection is completed, observe whether the extension line of the mark on the output shaft of the speed reducer corresponds to the target position of the annular magnetic grating ruler. The target position is the position of the red mark on the external display screen. If the mark is offset, the position adjustment component is used to drive the nozzle to move by the arc-shaped mounting plate, so that the extension line of the mark on the output shaft of the speed reducer is consistent with the target position, thereby reducing the error in determining the abnormal position of the worm wheel. BRIEF DESCRIPTION OF THE DRAWINGS

[0054] Figure 1 is the overall structure diagram of the detection device of the present invention;

[0055] Figure 2 is the connection schematic diagram of the second sliding frame and the mounting frame of the present invention;

[0056] Figure 3 is the connection schematic diagram of the first sliding frame and the shielding cover of the present invention;

[0057] Figure 4 is the connection schematic diagram of the mounting frame and the arc-shaped fixing frame in the present invention;

[0058] Figure 5 is the connection schematic diagram of the arc-shaped rack and the gear in the present invention;

[0059] Figure 6 is the cross-sectional view of the nozzle of the present invention;

[0060] Figure 7 is the connection schematic diagram of the annular magnetic grating ruler and the arc-shaped fixing plate in the present invention;

[0061] Figure 8 is the flow chart of the speed reducer detection method of the present invention;

[0062] Figure 9 is the flow chart of the nozzle calibration method of the present invention.

[0063] In the figure: inspection table 1, controller 2, fixed seat 3, hydraulic cylinder 4, positioning plate 5, speed reducer 6, first sliding frame 7, first electric cylinder 8, connecting rod 9, shielding cover 10, sound sensor 11, vibration sensor 12, elastic gasket 13, second sliding frame 14, second electric cylinder 15, nozzle 16, first nozzle 1601, second nozzle 1602, first pipe 1603, second pipe 1604, mounting frame 17, annular fixing plate 18, annular magnetic grating ruler 19, reading head 20, timer 21, arc-shaped clamping plate 22, spring 23, friction pad 24, electromagnet 25, arc-shaped fixing frame 26, arc-shaped track 27, arc-shaped mounting plate 28, arc-shaped rack 29, gear 30, self-locking motor 31. Detailed implementation

[0064] The following description is used to disclose the present invention so that those skilled in the art can implement the present invention. The preferred embodiments described below are only examples, and those skilled in the art can think of other obvious variations.

[0065] As Figures 1 to 7 shown, a baby carriage speed reducer detection device includes:

[0066] Inspection table 1, on the top of which a positioning component is provided for positioning the speed reducer 6;

[0067] First sliding frame 7, which is slidably connected to the top of the inspection table 1, and a contact component is provided on the side wall of the first sliding frame 7 for contacting the outer shell of the speed reducer 6;

[0068] First electric cylinder 8, which is fixed on the inspection table 1, and the telescopic rod of the first electric cylinder 8 is fixedly connected to the side wall of the first sliding frame 7;

[0069] Vibration sensor 12, which is arranged on the contact component for detecting the vibration signal of the shielding cover 10;

[0070] Second sliding frame 14, which is slidably connected to the top of the inspection table 1 corresponding to the output shaft position of the speed reducer 6, and a nozzle 16 is arranged on the side wall of the second sliding frame 14 corresponding to the meshing position of the worm and worm gear in the speed reducer 6;

[0071] Second electric cylinder 15, which is fixed on the inspection table 1, and the telescopic rod of the second electric cylinder 15 is fixedly connected to the side wall of the second sliding frame 14;

[0072] Controller 2, based on the vibration signal, when the vibration signal is abnormal, the controller 2 controls the nozzle 16 to spray the marking liquid onto the surface of the output shaft of the speed reducer 6;

[0073] Specifically, in the prior art, after detecting the reducer 6 and determining whether the meshing of the worm and worm gear in the reducer 6 is abnormal, it is necessary to disassemble the abnormal reducer 6 and reprocess the abnormally meshing part. Although the existing detection equipment can detect whether the meshing of the worm and worm gear in the reducer 6 is abnormal, it does not mark the abnormal part, thus increasing the subsequent processing difficulty. This technical solution can solve the above problems, and the specific operations are as follows:

[0074] First, place the reducer 6 to be detected on the detection table 1, position the reducer 6 through the positioning component on the detection table 1, and then start the first electric cylinder 8 and the second electric cylinder 15, so that the telescopic rod of the first electric cylinder 8 pushes the first sliding frame 7, and the first sliding frame 7 drives the contact part to approach the outer wall of the reducer 6 and make contact with the outer wall of the reducer 6. The telescopic rod of the second electric cylinder 15 pushes the second sliding frame 14, so that the second sliding frame 14 drives the nozzle 16 to move closer to the surface of the output shaft of the reducer 6;

[0075] Subsequently, connect the reducer 6 to an external power supply (not shown in the figure), so that the worm in the reducer 6 rotates slowly. Under the action of the meshing of the worm and worm gear, the worm wheel rotates, and thus the output shaft of the reducer 6 rotates slowly;

[0076] Then, detect the vibration signal of the contact part through the vibration sensor 12 (since the vibrating part is in contact with the reducer, when the reducer 6 vibrates, the contact part vibrates), and transmit the vibration signal to the controller 2. The controller 2 makes a real-time comparison between the vibration signal detected by the vibration sensor 12 and the sample vibration signal. When there is an obvious difference between the detected vibration signal and the sample vibration signal, for example, the RMS value of the vibration signal frequency band exceeds the calibrated value of 120%, the controller 2 controls the nozzle 16 to spray the marking liquid on the surface of the output shaft of the reducer 6;

[0077] After the detection is completed, remove the reducer 6 from the detection table 1. If there is a color mark on the output shaft, disassemble the outer shell of the reducer 6, and then find the abnormal position of the worm wheel along the extension line of the color mark and draw a line mark. After disassembling the worm and worm gear, the abnormal part of the worm wheel can be quickly found according to the marked position, which is convenient for repair and ensures the high safety and reliability of the reducer 6.

[0078] As a further implementation of the present invention, the contact part includes:

[0079] A connecting rod 9, which is fixedly connected to the side wall of the first sliding frame 7;

[0080] A shielding cover 10, which is fixed at the end of the connecting rod 9. A sound sensor 11 is arranged in the shielding cover 10, and the sound sensor 11 is used to detect the sound signal when the worm and worm gear in the reducer 6 are meshing;

[0081] The vibration sensor 12 is arranged on the outer side wall of the shielding cover 10;

[0082] When the sound signal is abnormal based on the sound signal, the controller 2 controls the nozzle 16 to spray the marking liquid onto the surface of the output shaft of the speed reducer 6.

[0083] Specifically, by setting the sound sensor 11 to detect the sound when the worm and worm gear in the speed reducer 6 mesh, the controller 2 makes a real-time comparison between the sound signal detected by the sound sensor 11 and the sample sound signal. When there is an obvious difference between the detected sound signal and the sample sound signal (for example, the difference value between the detected sound signal and the sample sound signal exceeds 120%), the controller 2 controls the nozzle 16 to spray the marking liquid of another color onto the surface of the output shaft of the speed reducer 6. On the one hand, it is convenient to distinguish the sound signal and the vibration signal, and on the other hand, the abnormal meshing is detected based on the combined detection of the sound signal and the vibration signal, improving the detection accuracy.

[0084] It should be noted that: the data of the sample vibration signal and the sample sound signal are obtained through the test of standard parts.

[0085] Furthermore, an elastic gasket 13 is fixedly connected to the end of the shielding cover 10 to ensure full contact between the shielding cover 10 and the outer shell of the speed reducer 6, further eliminating the interference of external noise.

[0086] As an optional implementation manner of the positioning component, the positioning component includes:

[0087] Four fixing seats 3, and the four fixing seats 3 are respectively fixed at the top of the test bench 1 corresponding to the positions of the four sides of the outer shell of the speed reducer 6;

[0088] Four hydraulic cylinders 4, the four hydraulic cylinders 4 are respectively fixed on the four fixing seats 3, the end parts of the telescopic rods of the four hydraulic cylinders 4 are fixedly connected with a positioning plate 5, and two first sliding rods are symmetrically and fixedly connected to the side wall of the positioning plate 5, and the first sliding rods are slidably connected with the fixing seats 3;

[0089] Specifically, by setting the four hydraulic cylinders 4 and the positioning plate 5, on the one hand, the speed reducer 6 is positioned to prevent the speed reducer 6 from shifting in position when starting, and on the other hand, it is ensured that the speed reducer 6 is located at the same position on the test bench 1, so that each time the speed reducer 6 is detected, the shielding cover 10 is located at the same position on the outer shell of the speed reducer 6, which is beneficial to reducing the detection error.

[0090] It should be noted that: the sound sensor 11 can select the TR-2000 series, with built-in low-pass filtering and dynamic threshold triggering functions, automatically filtering high-frequency noise and recording effective signals. The vibration sensor 12 can select the CMSS2100T model, and the controller 2 can select the Siemens S7-1500 series.

[0091] It should also be noted that the nozzle 16 is flat, with a first nozzle 1601 and a second nozzle 1602 built therein. At the top of the nozzle 16, a first pipe 1603 communicating with the first nozzle 1601 and a second pipe 1604 communicating with the second nozzle 1602 are fixed. The first pipe 1603 is connected to an external first liquid pump through a pipeline, and the second pipe 1604 is connected to an external second liquid pump through a pipeline. The long side of the nozzle 16 is parallel to the output shaft of the speed reducer 6; (for the sake of simplicity of the drawing, the first liquid pump and the second liquid pump are not drawn in the figure).

[0092] Specifically, when the vibration signal is abnormal, the controller 2 starts the external first liquid pump, so that the first nozzle 1601 sprays a marked liquid with a color. When the sound signal is abnormal, the controller 2 starts the external second liquid pump, so that the second nozzle 1602 sprays another marked liquid with a color. And because the nozzle 16 is flat and the long side is parallel to the output shaft of the speed reducer 6, the marks are in the shape of thin strips, further reducing the difficulty of determining the abnormal position of the worm gear subsequently. (If the marks are too thick, it is easy to cause overlap between adjacent marks, thus increasing the difficulty of determining the abnormal position of the worm gear subsequently).

[0093] As a further implementation scheme of the present invention, it further includes:

[0094] A mounting bracket 17, which is fixedly connected to the side wall of the second sliding bracket 14;

[0095] An annular fixing plate 18, which is rotatably connected to the side wall of the mounting bracket 17 at a position corresponding to the output shaft of the speed reducer 6. An annular magnetic grating scale 19 is fixedly connected to the outer side wall of the annular fixing plate 18;

[0096] A connecting component, which enables the annular fixing plate 18 to rotate synchronously with the output shaft of the speed reducer 6;

[0097] A reading head 20, which is fixedly connected to the side wall of the mounting bracket 17 at a position corresponding to the meshing position of the worm and worm gear in the speed reducer 6. The reading head 20 is used to record the position information of the annular magnetic grating scale 19 in real time;

[0098] A timer 21, which is fixed on the mounting bracket 17. When the speed reducer 6 starts, the timer 21 starts timing;

[0099] The controller 2 calculates and adjusts the rotation speed of the output shaft of the speed reducer 6 based on the time information of the timer 21 and the position information recorded by the reading head 20;

[0100] The connecting component includes:

[0101] Two arc-shaped clamping plates 22, which are symmetrically and slidably connected to the side wall of the end of the annular fixing plate 18. A spring 23 is fixedly connected between the arc-shaped clamping plate 22 and the annular fixing plate 18;

[0102] Two friction pads 24, and the two friction pads 24 are fixedly connected to the inner wall of the arc-shaped clamping plate 22;

[0103] Four electromagnets 25, and the four electromagnets 25 are respectively symmetrically and fixedly connected in the side wall grooves of the arc-shaped clamping plate 22;

[0104] Specifically, after the reducer 6 is positioned, the second electric cylinder 15 pushes the second sliding frame 14 close to the output shaft of the reducer 6, so that the annular fixing plate 18 is sleeved on the surface of the output shaft of the reducer 6. Subsequently, the circuit of the electromagnet 25 is connected. Under the action of the mutual attraction of the four electromagnets 25, the two arc-shaped clamping plates 22 approach each other and are in full contact with the output shaft of the reducer 6. In order to ensure that the annular fixing plate 18 can rotate synchronously with the output shaft of the reducer 6, a connecting groove is opened on the side wall of the arc-shaped clamping plate 22, and the two arc-shaped clamping plates 22 are locked on the output shaft of the reducer 6 through bolts to ensure that the arc-shaped clamping plate 22 and the output shaft of the reducer 6 rotate synchronously;

[0105] After the arc-shaped clamping plate 22 is connected, the reducer 6 is started, so that the output shaft of the reducer 6 rotates, so that the annular fixing plate 18 drives the annular magnetic grating ruler 19 to rotate, and the timer 21 starts timing. The controller 2 calculates and adjusts the rotation speed of the output shaft of the reducer 6 based on the time information of the timer 21 and the position information recorded by the reading head 20, ensuring that the output shaft of the reducer 6 can maintain the same rotation speed each time the reducer 6 is detected, thereby facilitating the reduction of detection errors.

[0106] Among them, the model of the reading head 20 can be selected from the LIDA 400 series and is paired with the LC series magnetic grating ruler.

[0107] It should be noted that: the controller 2 adjusts the magnitude of the output current of the external power supply to adjust the rotation speed of the output shaft of the reducer 6.

[0108] As a further implementation scheme of the present invention, it further includes:

[0109] An arc-shaped fixing frame 26, and the arc-shaped fixing frame 26 is fixedly connected to the end of the mounting frame 17;

[0110] An arc-shaped track 27, and the arc-shaped track 27 is opened on the arc-shaped fixing frame 26, and the arc-shaped track 27 is concentric with the output shaft of the reducer 6;

[0111] An arc-shaped mounting plate 28, and the arc-shaped mounting plate 28 is slidably connected to the inner side wall of the arc-shaped track 27, and the nozzle 16 is fixedly connected to the arc-shaped mounting plate 28;

[0112] A position adjustment component, which is used to adjust the position of the arc-shaped mounting plate 28 on the arc-shaped track 27 to compensate for the error of the marked position;

[0113] The position adjustment component includes:

[0114] Two arc-shaped rack bars 29 are symmetrically and fixedly connected to the side wall of the arc-shaped mounting plate 28;

[0115] Two gears 30, the two gears 30 are respectively engaged with the two arc-shaped rack bars 29, the two gears 30 share the same rotating shaft, and the rotating shaft penetrates through the outer side wall of the arc-shaped fixing frame 26 and is rotatably connected to the arc-shaped fixing frame 26;

[0116] A self-locking motor 31, the self-locking motor 31 is fixedly connected to the outer side wall of the arc-shaped fixing frame 26, and the output shaft of the self-locking motor 31 is fixedly connected to the rotating shaft;

[0117] Specifically, since the controller 2 receives the sound signals and vibration signals sent by the sound sensor 11 and the vibration sensor 12, and then controls the nozzle 16 to spray the marking liquid according to the abnormalities of the sound signals and vibration signals, this operation process requires a certain response time, and the output shaft of the speed reducer 6 is always in a rotating state, which is likely to cause an error between the marking position and the actual abnormal position. Therefore, before detecting the speed reducer 6, it is necessary to calibrate the position of the nozzle 16. The specific operation is as follows. First, place the speed reducer 6 on the detection table 1 for detection. The detection process is as above. The output shaft of the speed reducer 6 only rotates one circle. The position information of the annular magnetic grating scale 19 is read in real time by the reading head 20 and fed back to the external display screen. At the same time, the sound sensor 11 and the vibration sensor 12 detect the internal sound signals and vibration signals of the speed reducer 6 in real time. When an abnormality occurs, a red mark will be displayed at the corresponding position information on the external display screen, otherwise it will display green. After the detection is completed, observe whether the extension line of the mark on the output shaft of the speed reducer 6 corresponds to the target position of the annular magnetic grating scale 19. The target position is the position of the red mark on the external display screen. If the mark is offset, start the self-locking motor 31 to make the output shaft of the self-locking motor 31 rotate. The gear 30 rotates and meshes with the arc-shaped rack bar 29, so that the arc-shaped mounting plate 28 drives the nozzle 16 to move until the extension line of the mark on the output shaft of the speed reducer 6 is consistent with the target position (the error is within 0.1 mm), and then the remaining detection of the speed reducer 6 is carried out, so as to reduce the error in determining the abnormal position of the worm gear.

[0118] Such as Figure 8 and Figure 9 As shown, to solve the above problems, the present invention also proposes a method for detecting a baby carriage speed reducer, including the following steps:

[0119] S1: Calibrate the position of the nozzle 16;

[0120] S2: Place the speed reducer 6 on the detection table 1 and position it through the positioning component;

[0121] S3: Detect the internal sound signal of the speed reducer 6 and the vibration signal of the housing of the speed reducer 6 through the sound sensor 11 and the vibration sensor 12;

[0122] S4: When an abnormality occurs based on the sound signal and the vibration information, the controller 2 controls the nozzle 16 to spray marks of different colors on the output shaft of the speed reducer 6;

[0123] S5: Determine the abnormal area of the worm gear according to the extension line of the mark;

[0124] Among them, S1 specifically includes the following steps:

[0125] S101: Read the position information of the annular magnetic grating ruler 19 in real time through the reading head 20 and feedback it to the external display screen;

[0126] S102: The external display screen displays different colors at the corresponding position information according to the sound signal and the vibration signal, with abnormal displayed in red and normal displayed in green;

[0127] S103: When an abnormality occurs based on the sound signal and the vibration information, the controller 2 controls the nozzle 16 to spray marks of different colors on the output shaft of the speed reducer 6;

[0128] S104: Adjust the spraying position of the nozzle 16 through the position adjustment component so that the extension line of the mark on the output shaft of the speed reducer 6 is consistent with the position of the red mark on the external display screen.

[0129] Finally, the working principle of the present invention is as follows:

[0130] First, place the speed reducer 6 to be detected on the detection table 1, position the speed reducer 6 through the positioning component on the detection table 1, and then start the first electric cylinder 8 and the second electric cylinder 15, so that the telescopic rod of the first electric cylinder 8 pushes the first sliding frame 7, and the first sliding frame 7 drives the contact part to approach the outer wall of the speed reducer 6 and contact with the outer wall of the speed reducer 6. The telescopic rod of the second electric cylinder 15 pushes the second sliding frame 14, so that the second sliding frame 14 drives the nozzle 16 to move closer to the surface of the output shaft of the speed reducer 6;

[0131] Subsequently, connect the speed reducer 6 to an external power supply (not shown in the figure), so that the worm in the speed reducer 6 rotates slowly. Under the action of the meshing of the worm and the worm gear, the worm gear rotates, so that the output shaft of the speed reducer 6 rotates slowly;

[0132] Next, the vibration sensor 12 is used to detect the vibration signal of the contact component (since the vibrating component is in contact with the speed reducer, when the speed reducer 6 vibrates, the contact component vibrates), and the vibration signal is transmitted to the controller 2. The controller 2 makes a real-time comparison between the vibration signal detected by the vibration sensor 12 and the sample vibration signal. When there is an obvious difference between the detected vibration signal and the sample vibration signal, for example, the RMS value of the vibration signal frequency band exceeds the calibration value by 120%, the controller 2 controls the nozzle 16 to spray the marking liquid onto the surface of the output shaft of the speed reducer 6;

[0133] After the detection is completed, the speed reducer 6 is removed from the detection table 1. If there is a color mark on the output shaft, the housing of the speed reducer 6 is disassembled, and then the abnormal position of the worm wheel is marked by drawing a line along the extension line of the color mark. After disassembling the worm and worm wheel, the abnormal part of the worm wheel can be quickly found according to the marked position, which is convenient for repair and ensures the high safety and reliability of the speed reducer 6.

[0134] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited by the above embodiments. What is described in the above embodiments and the specification is only the principle of the present invention. Without departing from the spirit and scope of the present invention, the present invention will have various changes and improvements, and these changes and improvements all fall within the scope of the present invention claimed.

Claims

1. A baby stroller speed reducer detection device, characterized in that, Including: A detection table (1), on the top of which there is a positioning component for positioning the speed reducer (6); A first sliding frame (7), which is driven by a first electric cylinder (8) and slidably arranged on the top of the detection table (1). A contact component is arranged on the side wall of the first sliding frame (7) for contacting the outer shell of the speed reducer (6); A vibration sensor (12), which is arranged on the contact component for detecting the vibration signal of the shielding cover (10); A second sliding frame (14), which is driven by a second electric cylinder (15) and slidably arranged on the top of the detection table (1). A nozzle (16) is arranged on the side wall of the second sliding frame (14) corresponding to the meshing position of the worm and worm gear in the speed reducer (6); A controller (2), based on the vibration signal, when the vibration signal is abnormal, the controller (2) controls the nozzle (16) to spray a marking liquid onto the surface of the output shaft of the speed reducer (6).

2. The detection device for a baby carriage speed reducer according to claim 1, characterized in that, The contact component includes: A connecting rod (9), which is fixedly connected to the side wall of the first sliding frame (7); A shielding cover (10), which is fixed to the end of the connecting rod (9). A sound sensor (11) is arranged inside the shielding cover (10) for detecting the sound signal when the worm and worm gear in the speed reducer (6) are meshing; The vibration sensor (12) is arranged on the outer side wall of the shielding cover (10); Based on the sound signal, when the sound signal is abnormal, the controller (2) controls the nozzle (16) to spray a marking liquid onto the surface of the output shaft of the speed reducer (6).

3. The detection device for a baby carriage speed reducer according to claim 2, wherein, It further includes: A mounting frame (17), which is fixedly connected to the side wall of the second sliding frame (14); An annular fixing plate (18), which is rotatably connected to the side wall of the mounting frame (17) corresponding to the position of the output shaft of the speed reducer (6). An annular magnetic grating ruler (19) is fixedly connected to the outer side wall of the annular fixing plate (18); A connecting component, which synchronizes the rotation of the annular fixing plate (18) and the output shaft of the speed reducer (6); A reading head (20), which is fixedly connected to the side wall of the mounting frame (17) corresponding to the meshing position of the worm and worm gear in the speed reducer (6). The reading head (20) is used to record the position information of the annular magnetic grating ruler (19) in real time; A timer (21), which is fixed on the mounting frame (17). When the speed reducer (6) starts, the timer (21) starts timing; Based on the time information of the timer (21) and the position information recorded by the reading head (20), the controller (2) calculates and adjusts the rotational speed of the output shaft of the speed reducer (6).

4. The detection device for a baby carriage speed reducer according to claim 3, characterized in that, It further includes: An arc-shaped fixing frame (26), which is fixedly connected to the end of the mounting frame (17); An arc-shaped track (27), which is opened on the arc-shaped fixing frame (26) and is concentric with the output shaft of the speed reducer (6); An arc-shaped mounting plate (28), the arc-shaped mounting plate (28) is slidably connected to the inner side wall of the arc-shaped track (27), and the nozzle (16) is fixedly connected to the arc-shaped mounting plate (28); A position adjustment component, the position adjustment component is used to adjust the position of the arc-shaped mounting plate (28) on the arc-shaped track (27) to compensate for the error of the marked position.

5. The detection device for a baby carriage speed reducer according to claim 4, characterized in that, The position adjustment component includes: Two arc-shaped racks (29), the two arc-shaped racks (29) are symmetrically and fixedly connected to the side wall of the arc-shaped mounting plate (28); Two gears (30), the two gears (30) are respectively engaged with the two arc-shaped racks (29), the two gears (30) share the same rotating shaft, and the rotating shaft penetrates through the outer side wall of the arc-shaped fixing frame (26) and is rotatably connected to the arc-shaped fixing frame (26); A self-locking motor (31), the self-locking motor (31) is fixedly connected to the outer side wall of the arc-shaped fixing frame (26), and the output shaft of the self-locking motor (31) is fixedly connected to the rotating shaft.

6. The detection device for a baby carriage speed reducer according to claim 5, characterized in that The connecting component includes: Two arc-shaped clamping plates (22), the two arc-shaped clamping plates (22) are symmetrically and slidably connected to the side wall of the end of the annular fixing plate (18), and a spring (23) is fixedly connected between the arc-shaped clamping plate (22) and the annular fixing plate (18); Two friction pads (24), the two friction pads (24) are fixedly connected to the inner wall of the arc-shaped clamping plate (22); Four electromagnets (25), the four electromagnets (25) are respectively symmetrically and fixedly connected in the side wall grooves of the arc-shaped clamping plate (22).

7. The inspection device for a baby carriage reduction gear according to claim 2, characterized in that, The nozzle (16) is flat, and the long side of the nozzle (16) is parallel to the output shaft of the speed reducer (6).

8. The detection device for a baby carriage speed reducer according to claim 7, characterized in that, The nozzle (16) is internally provided with a first nozzle (1601) and a second nozzle (1602), a first pipe (1603) communicated with the first nozzle (1601) and a second pipe (1604) communicated with the second nozzle (1602) are fixed at the top of the nozzle (16), the first pipe (1603) is connected to an external first liquid pump through a pipeline, and the second pipe (1604) is connected to an external second liquid pump through a pipeline.

9. A method for detecting a speed reducer of a baby carriage, applicable to a baby carriage speed reducer detection device according to claim 7, includes the following steps: S1: Calibrate the position of the nozzle (16); S2: Place the speed reducer (6) on the detection table (1) and position it through the positioning component; S3: Detect the internal sound signal of the speed reducer (6) and the vibration signal of the housing of the speed reducer (6) through the sound sensor (11) and the vibration sensor (12); S4: When an abnormality occurs based on the sound signal and the vibration information, the controller (2) controls the nozzle (16) to spray marks of different colors on the output shaft of the speed reducer (6); S5: Determine the abnormal area of the worm gear according to the extension line of the mark.

10. A method for detecting a baby carriage reduction gearbox according to claim 9, characterized in that, The specific steps of S1 include the following: S101: Read the position information of the annular magnetic grating ruler (19) in real time through the reading head (20) and feedback it to the external display screen; S102: The peripheral display screen displays different colors at the corresponding position information according to the sound signal and the vibration signal, with abnormal display in red and normal display in green; S103: The controller (2) controls the nozzle (16) to spray marks of different colors on the output shaft of the speed reducer (6) when an abnormality occurs based on the sound signal and the vibration information; S104: Through the position adjustment component, the spraying position of the nozzle (16) is adjusted so that the extension line of the mark on the output shaft of the speed reducer (6) is consistent with the position of the red mark on the peripheral display screen.

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