Vehicle-mounted refrigerator vibration acceleration detection device

Abstract

A vehicle-mounted refrigerator vibration acceleration detection device includes a main frame with two support platforms connected to its bottom. A shock absorber is located below the main frame, and an air spring is attached to the inner wall of the shock absorber. The top of each air spring penetrates the main frame and extends to the top of the frame. This device, through the integrated air springs in the shock absorber below the main frame, effectively filters out external vibration interference, providing a stable base for detection, avoiding the influence of environmental vibration on the detection results, and ensuring data reliability. A collaborative robot equipped with a CCD camera achieves visual positioning of the door panel detection location. Combined with a switchable probe-type short rod round cap contact and a direct buffer spring acceleration sensor detection component, it balances the direct transmission of vibration signals with interference filtering capabilities. By offline testing of parameters such as the extension rod length and spring coefficient, it can be specifically adapted to different detection scenarios, balancing signal integrity.

Description

Technical Field

[0001] This utility model relates to the field of vehicle refrigerators, and in particular to a vibration acceleration detection device for vehicle refrigerators. Background Technology

[0002] With the development of society, economy and automobile industry, the quality of cars has gradually improved. Many cars are equipped with car refrigerators to provide passengers with refreshing drinks or fresh food during their journeys. A car refrigerator is a portable refrigeration device designed specifically for cars. It can maintain a low temperature under certain conditions and is used to store food, beverages, medicines and other items that need to be refrigerated. It is a practical tool to improve the quality of travel, especially suitable for long-distance travel, outdoor activities or special needs.

[0003] During vehicle operation, in-vehicle refrigerators need to withstand mechanical vibrations from various sources, including road conditions, engine operation, and vehicle body vibrations. Their vibration tolerance directly affects the reliability and lifespan of the product. Currently, the industry's testing methods for the vibration performance of in-vehicle refrigerators are relatively limited, resulting in problems such as low testing efficiency, poor consistency, and insufficient data reliability.

[0004] Therefore, it is necessary to provide an improved vehicle-mounted refrigerator vibration acceleration detection device to overcome the above-mentioned defects of the prior art. Utility Model Content

[0005] The purpose of this invention is to solve the above problems and provide a vehicle-mounted refrigerator vibration acceleration detection device.

[0006] To achieve the objectives of this utility model, the following technical solution is adopted:

[0007] A vehicle-mounted refrigerator vibration acceleration detection device includes: a main frame of the device, two support platforms connected to the bottom surface of the main frame, a shock absorber provided below the main frame, a set of air springs snapped into the inner wall of the shock absorber, the top of each air spring penetrating through the main frame and extending to the top of the main frame, and a lifting tray mechanism connected to the upper surface of each air spring.

[0008] Preferably, a buffer spring is connected to the end of the collaborative robot away from the detection mounting frame, and a first acceleration sensor is connected to the end of the buffer spring away from the collaborative robot.

[0009] Preferably, a buffer spring is connected to the end of the collaborative robot away from the detection mounting frame, and a first acceleration sensor is connected to the end of the buffer spring away from the collaborative robot.

[0010] Preferably, a second accelerometer is connected to the end of the collaborative robot away from the detection mounting frame, and a short rod is connected to the end of the second accelerometer away from the collaborative robot, with a round cap contact connected to the bottom surface of the short rod.

[0011] Preferably, an automatic power-on mechanism is connected to the front of the main frame. The automatic power-on mechanism includes a pneumatic disengagement mechanism connected to the front of the main frame, and one end of the pneumatic disengagement mechanism is connected to an XYZ floating mechanism.

[0012] Preferably, one end of the XYZ floating mechanism is connected to an electric power supply.

[0013] Preferably, a display is connected to the back of the testing mounting bracket, a touch screen is connected to the right side of the testing mounting bracket, and a control box is connected to the inner wall of the testing mounting bracket.

[0014] Compared with the prior art, the advantages of this utility model are as follows:

[0015] In this invention, the shock absorber integrated with an air spring under the main frame effectively filters out external vibration interference, providing a stable base for testing, avoiding the impact of environmental vibration on test results, and ensuring data reliability. The collaborative robot is equipped with a CCD camera to achieve visual positioning of the door panel detection position. Combined with a switchable probe-type short rod round cap contact and a direct buffer spring acceleration sensor detection component, it balances the direct transmission of vibration signals and interference filtering capabilities. By offline testing of parameters such as the extension rod length and spring coefficient, it can be specifically adapted to different testing scenarios, balancing signal integrity and anti-interference. The XYZ floating mechanism of the automatic power-on mechanism has three-dimensional compensation capabilities, ensuring rapid and accurate docking of the male connector of the equipment and the female connector of the tooling plate, realizing the automation of power supply and communication, avoiding human intervention errors, improving the continuity of the testing process, collecting test data in real time and comparing it with standard values, and automatically triggering a retest mechanism for non-conforming products to reduce misjudgments due to accidental factors. Test results are synchronously written into the database and uploaded to the MES system to achieve full-process information management, providing data support for product quality analysis and production traceability.

[0016] Additional aspects and advantages of this invention will be set forth in part in the description which follows, and will become apparent from the description or may be learned by practice of the invention. Attached Figure Description

[0017] The above and / or additional aspects and advantages of this utility model will become apparent and readily understood from the following description of the embodiments taken in conjunction with the accompanying drawings, in which:

[0018] Figure 1 This is a perspective view of a vehicle-mounted refrigerator vibration acceleration detection device according to an embodiment of the present invention.

[0019] Figure 2 This is a 3D structural diagram of the collaborative robot in the vehicle-mounted refrigerator vibration acceleration detection equipment.

[0020] Figure 3 This is a three-dimensional structural diagram of the first acceleration sensor in a vehicle-mounted refrigerator vibration acceleration detection device.

[0021] Figure 4 This is a three-dimensional structural diagram of the second acceleration sensor in a vehicle-mounted refrigerator vibration acceleration detection device.

[0022] Figure 5 This is a 3D view of the automatic power-on mechanism in a vehicle-mounted refrigerator vibration acceleration detection device. Detailed Implementation

[0023] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this utility model and should not be construed as limiting this utility model.

[0024] Those skilled in the art will understand that, unless specifically stated otherwise, the singular forms “a,” “an,” “the,” and “the” used herein may also include the plural forms. It should be further understood that the term “comprising” as used in this specification means the presence of the stated features, integers, steps, operations, elements, and / or components, but does not exclude the presence or addition of one or more other features, integers, steps, operations, elements, and / or components, nor does it exclude the presence or addition of one or more other features, integers, steps, operations, elements, components, and / or groups thereof. It should be understood that when we say an element is “connected” or “coupled” to another element, it can be directly connected or coupled to the other element, or there may be intermediate elements. Furthermore, “connected” or “coupled” as used herein can include wireless connection or wireless coupling. The term “and / or” as used herein includes all or any unit and all combinations of one or more associated listed items.

[0025] It will be understood by those skilled in the art that, unless otherwise defined, all terms used herein (including technical and scientific terms) have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. It should also be understood that terms such as those defined in general dictionaries should be understood to have the same meaning as in the context of the prior art, and should not be interpreted in an idealized or overly formal sense unless specifically defined as herein.

[0026] According to one embodiment of the present invention, in conjunction with Figure 1-5A vehicle-mounted refrigerator vibration acceleration detection device includes: a main frame 3, with two support platforms 1 connected to the bottom of the main frame 3; a shock absorber 2 located below the main frame 3; a set of air springs 201 snapped into the inner wall of the shock absorber 2; the top of each air spring 201 penetrates the main frame 3 and extends above it; a lifting tray mechanism 7 is connected to the upper surface of each air spring 201; a collaborative robot 401 precisely moves to the door panel detection position obtained by taking pictures and positioning with a CCD camera 402; depending on the detection scheme, if a probe-type detection is used, a second acceleration sensor 407 with a round cap contact 406 is attached to the refrigerator via a short rod 405; if a direct detection is used, a first acceleration sensor 407 connected via a buffer spring 403 is attached to the refrigerator. An accelerometer (404 stainless steel) is attached to the refrigerator, ensuring close contact for accurate vibration signal acquisition. The testing system begins collecting vibration data from the accelerometer and compares the real-time data with set standard values. Using a pre-defined algorithm and logic, the system determines whether the refrigerator's vibration acceleration meets requirements and generates a test result. If the result is unqualified, the system automatically triggers a retest, repeating steps 4 and 5 to re-test the product. This eliminates the influence of accidental factors on the test results, ensuring accuracy while balancing direct vibration signal transmission with interference filtering. By testing parameters such as the extension rod length and spring coefficient offline, the system can be tailored to different testing scenarios, balancing signal integrity and anti-interference capabilities.

[0027] The back of the main frame 3 is connected to the detection mounting frame 4. The inner wall of the detection mounting frame 4 is connected to the collaborative robot 401. The end of the collaborative robot 401 away from the detection mounting frame 4 is connected to the CCD camera 402. The collaborative robot 401 has multi-degree-of-freedom motion capability and can move flexibly in three-dimensional space. After the CCD camera 402 is positioned, it can quickly and accurately deliver the accelerometer to the designated detection position. The end of the collaborative robot 401 away from the detection mounting bracket 4 is connected to a buffer spring 403. The end of the buffer spring 403 away from the collaborative robot 401 is connected to a first accelerometer 404. The elastic deformation of the buffer spring 403 makes the first accelerometer 404 maintain a stable and moderate contact pressure with the surface of the refrigerator, which can ensure that the sensor continuously and stably collects vibration signals. The end of the collaborative robot 401 away from the detection mounting bracket 4 is connected to a second accelerometer 407. The end of the second accelerometer 407 away from the collaborative robot 401 is connected to a short rod 405. The bottom surface of the short rod 405 is connected to a round cap contact 406, which can prevent damage to the surface of the refrigerator.

[0028] An automatic power-on mechanism 5 is connected to the front of the main frame 3. The automatic power-on mechanism 5 includes a pneumatic disengagement mechanism 501 connected to the front of the main frame 3. One end of the pneumatic disengagement mechanism 501 is connected to an XYZ floating mechanism 502. The XYZ floating mechanism 502 has the ability to float and adjust in three coordinate axes, and can dynamically compensate for the positional deviation between the female end of the tooling plate and the male end of the equipment. One end of the XYZ floating mechanism 502 is connected to a power-on component 503. With its flexible floating and adjustment capabilities in the X, Y, and Z coordinate axes, the XYZ floating mechanism 502 can drive the power-on component 503 to perform dynamic position compensation, so that the power-on component 503 can accurately align with the female end of the tooling plate. A display 8 is connected to the back of the inspection mounting frame 4. A touch screen 9 is connected to the right side of the inspection mounting frame 4. A control box 6 is connected to the inner wall of the inspection mounting frame 4. The display 8 on the back of the inspection mounting frame 4 can display various data, images and inspection results in real time during the inspection process.

[0029] The working principle of this utility model is as follows: When the product flows to the detection position, the lifting mechanism is activated to lift the tooling plate. At the same time, the male end of the equipment and the female end of the tooling plate are accurately connected under the adjustment of the XYZ floating mechanism 502, completing the power supply and communication connection. The host computer sends a command to the vehicle-mounted refrigerator to start the refrigerator's compressor, simulating the working state of the vehicle-mounted refrigerator during actual operation, providing a realistic working environment for vibration detection. The collaborative robot 401 moves precisely to the door panel detection position obtained by the CCD camera 402. Depending on the detection scheme, if a probing detection is used, the second accelerometer 407 with a round cap contact 406 is attached to the refrigerator via a short rod 405. If a direct detection is used, the first accelerometer 404 connected by a buffer spring 403 is attached to the refrigerator, ensuring that the sensor is in close contact with the refrigerator to accurately collect vibration signals. The testing system then begins to collect data. The system collects vibration data from the accelerometer and compares the real-time collected data with the set standard value. Through a preset algorithm and judgment logic, it judges whether the vibration acceleration of the vehicle refrigerator meets the requirements and obtains the test result. If the test result is unqualified, the system automatically triggers the retest process, repeating steps 4 and 5 to retest the product to eliminate the influence of accidental factors on the test result and ensure the accuracy of the test result. Regardless of whether the test result is qualified or not, the test result is written to the database for storage in real time and uploaded to the MES system to realize the traceability and information management of the test data, which facilitates subsequent quality analysis and production traceability. After the test is completed, the collaborative robot 401 carries the sensor back to its original position, and the power-on component 503 of the automatic power-on mechanism 5 is disengaged from the tooling plate head under the action of the pneumatic disengagement mechanism 501. All mechanisms return to the initial state and are ready for the next test.

[0030] Those skilled in the art will understand that the steps, measures, and solutions in the various operations, methods, and processes discussed in this application can be alternated, modified, combined, or deleted. Furthermore, other steps, measures, and solutions in the various operations, methods, and processes discussed in this application can also be alternated, modified, rearranged, decomposed, combined, or deleted. Furthermore, steps, measures, and solutions in the prior art that are similar to those disclosed in this application can also be alternated, modified, rearranged, decomposed, combined, or deleted.

[0031] The above description is only a partial embodiment of this application. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the principle of this application, and these improvements and modifications should also be considered within the scope of protection of this application.

Claims

1. A vehicle-mounted refrigerator vibration acceleration detection apparatus comprising: The main frame of the equipment is characterized in that: two support platforms are connected to the bottom surface of the main frame, a shock absorber is provided below the main frame, a set of air springs is snapped into the inner wall of the shock absorber, the top of each air spring penetrates through the main frame and extends to the top of the main frame, and a lifting tray mechanism is connected to the upper surface of each air spring.

2. The shock acceleration detecting apparatus for a vehicle refrigerator according to claim 1, characterized by: The back of the main frame is connected to a testing mounting bracket.

3. The shock acceleration detecting apparatus for a vehicle refrigerator according to claim 2, characterized by: The inner wall of the testing mounting frame is connected to a collaborative robot.

4. The shock acceleration detecting apparatus for a vehicle refrigerator according to claim 3, characterized by: The collaborative robot is connected to a CCD camera at the end furthest from the inspection mounting frame.

5. The shock acceleration detecting apparatus for a vehicle refrigerator according to claim 4, characterized by: The collaborative robot has a buffer spring connected to the end furthest from the inspection mounting frame.

6. The shock acceleration detecting apparatus for a vehicle refrigerator according to claim 5, characterized by: The end of the buffer spring furthest from the collaborative robot is connected to a first acceleration sensor.

7. The shock acceleration detecting apparatus for a vehicle refrigerator according to claim 6, characterized by: The collaborative robot is connected to a second accelerometer at the end furthest from the detection mounting frame. The second accelerometer is connected to a short rod at the end furthest from the collaborative robot. A round cap contact is connected to the bottom surface of the short rod.

8. The shock acceleration detecting apparatus for a vehicle refrigerator according to claim 1, characterized by: An automatic power-on mechanism is connected to the front of the main frame. The automatic power-on mechanism includes a pneumatic disengagement mechanism connected to the front of the main frame, and one end of the pneumatic disengagement mechanism is connected to an XYZ floating mechanism.

9. The vehicle-mounted refrigerator vibration acceleration detection device according to claim 8, characterized in that: One end of the XYZ floating mechanism is connected to an electric power supply.

10. The vehicle-mounted refrigerator vibration acceleration detection device according to claim 2, characterized in that: A display is connected to the back of the testing mounting bracket, a touch screen is connected to the right side of the testing mounting bracket, and a control box is connected to the inner wall of the testing mounting bracket.

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