A fan oscillation life tester

Abstract

This utility model relates to the field of fan testing, specifically to a fan oscillation life testing machine. The testing mechanism includes a fixed frame, at least one fan oscillation clamp, and left and right rotation motors. The left and right rotation motors are fixed to the fixed frame. The frame has a U-shaped opening facing downwards, and the top of the frame is fixedly connected to the output shaft of the left and right rotation motors. The two sides of the clamping frame are rotatably connected to the two sides of the frame opening via rotating shafts. A set of transmission wheels is provided on the side of the frame, connected by a synchronous belt. A pitch motor is fixedly mounted on the frame, with one rotating wheel fixedly connected to the rotating shaft, and the other transmission wheel fixedly connected to the output shaft of the pitch motor. The above structure is simple and easy to operate. The multi-station staggered arrangement allows for expansion, saving space and improving testing consistency and accuracy. It simultaneously meets the requirements for left and right rotation and up and down pitch rotation testing, improving testing efficiency. A lifting function is used to accommodate different sample heights.

Description

Technical Field

[0001] This utility model relates to the field of fan testing, specifically to a fan oscillation life testing machine. Background Technology

[0002] The oscillation mechanism of a fan is a core functional component, and its reliability directly affects the product's lifespan and user experience. Currently, most oscillation fans on the market use a gearbox + synchronous motor or brushless motor direct drive transmission method. During long-term use, oscillation failure may occur due to mechanical wear, motor overheating, or structural fatigue. Therefore, industry standards (such as IEC 60335-2-80 and GB / T 13380) require that the fan oscillation mechanism must pass more than 10,000 durability tests, and some high-end products even need to meet more than 50,000 cycle tests.

[0003] A fan oscillation life tester is used to test the lifespan of a fan oscillation mechanism. Currently, fan oscillation life testers on the market can only test the lifespan of left and right oscillation, but do not have the function of pitching and rocking. Therefore, the function is very limited, and the workstations are all independent. As a result, the test workstations cannot be stacked, leading to a shortage of test workstations and low testing efficiency. Since the workstations operate independently, the test standards for each workstation are different, and the test accuracy is not high. Utility Model Content

[0004] The purpose of this invention is to solve the above-mentioned problems by proposing a fan oscillation life tester.

[0005] To achieve the above objectives, this utility model provides the following technical solution:

[0006] A fan oscillation life testing machine is characterized by comprising a testing frame, a testing mechanism, and a height adjustment mechanism. The testing mechanism is located at the top of the testing frame, and the height adjustment mechanism is located at the bottom of the testing frame for placing the fan under test. The testing mechanism includes a fixed frame, at least one fan oscillation clamp, and a left-right rotating motor. The left-right rotating motor is fixed on the fixed frame. The fan oscillation clamp includes a bracket and a clamping frame for clamping the fan head. The bracket has a U-shaped opening facing downwards. The top of the bracket is fixedly connected to the output shaft of the left-right rotating motor. The two sides of the clamping frame are rotatably connected to the two sides of the bracket opening via rotating shafts. A set of transmission wheels is provided on the side of the bracket and connected by a synchronous belt. A pitch motor is fixedly installed on the bracket. One rotating wheel is fixedly connected to the rotating shaft, and the other transmission wheel is fixedly connected to the output shaft of the pitch motor, forming a synchronous pitch drive structure.

[0007] This setup, based on the left-right swing test structure, adds a pitch drive structure, which can simultaneously or separately test the rotational life of the fan in the left, right, up, and down directions. It has high testing efficiency and also has the function of compound testing. Multiple rounds of testing can be completed with only one fixation, which greatly improves testing efficiency.

[0008] Preferably, several workstations are set on the fixed frame, and each workstation is equipped with a synchronous pulley. The synchronous pulley is fixedly connected to the top of a bracket through a connecting shaft. A drive wheel is set on the top of the left and right rotating motor. The drive wheel is connected to the output shaft of the left and right rotating motor. The drive wheel and the synchronous pulley are connected through a synchronous belt, thus forming a multi-workstation synchronous left and right rotating structure.

[0009] This setup employs an integrated synchronous design, allowing one left-right rotating motor to simultaneously test multiple fans, avoiding the problem of rotational deviation among multiple motors. Multiple workstations can be arranged on the test rack for workstation expansion, resulting in higher consistency in testing standards for batches of fans and improving testing accuracy and precision.

[0010] Preferably, at least one set of multi-station synchronous left and right rotation structures is provided on the fixed frame.

[0011] This setting allows for the installation of multiple sets of multi-station synchronous left-right rotation structures on a fixed frame. Since the power of a single motor is limited, it is generally more stable to drive 3-5 supports simultaneously. Therefore, to expand the number of workstations, multiple sets of multi-station synchronous left-right rotation structures can be installed to ensure the consistency and accuracy of the tests as much as possible.

[0012] Preferably, the height adjustment mechanism includes a lifting platform, a lead screw, and a lifting motor. A lifting motor is fixedly installed on each side of the lifting platform. A mounting plate with screw holes is fixedly installed on the lifting platform. The lead screw passes through the screw holes and forms a rotational lifting engagement with them. A crossbeam is installed on each side of the test frame, and a bearing seat is fixedly installed on the crossbeam. One end of the lead screw is rotatably mounted in the bearing seat, and the other end is connected to a synchronous gear. A drive synchronous gear is fixedly fitted on the output shaft of the lifting motor. A lead screw is installed at each end of a crossbeam. The drive synchronous gear and the synchronous gears on both sides are connected by a synchronous belt to form a synchronous lifting engagement.

[0013] This setup features a synchronous lifting structure that can stably adjust the height of the test fan. This adjustable structure allows the workstation to adapt to different batches and types of fans, making adjustment very convenient. It greatly expands the versatility and applicability, and also improves testing efficiency. As for the synchronization of the lifting motors on both sides, the synchronization issue can be addressed by using existing synchronous switches or an external PCL control system.

[0014] Preferably, a limit switch is provided on the mounting plate.

[0015] The limit switch on the mounting plate is provided to accommodate the limit requirements when using a fully automatic control system. To connect to a fully automatic control system, simply install limit switch contacts on the test fixture to achieve limit control of the upper and lower positions.

[0016] The fan oscillation life testing machine proposed in this utility model has the following advantages: simple structure, convenient operation, multiple staggered workstations, and expandability, which not only saves space but also improves the consistency and accuracy of testing; it can simultaneously meet the rotation test of left and right rotation and up and down tilt, thus improving the testing efficiency; and it uses a lifting function to adapt to different sample heights. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the structure of this utility model;

[0018] Figure 2 This is a schematic diagram of the structure of the testing mechanism of this utility model;

[0019] Figure 3 This is a schematic diagram of the fan oscillating clamp of this utility model;

[0020] Figure 4 This is a side view of the fan oscillating clamp of this utility model;

[0021] Figure 5 This is a schematic diagram of the height adjustment mechanism of this utility model. Detailed Implementation

[0022] The present invention will be further described below with reference to the accompanying drawings:

[0023] See attached document Figure 1-5 In this embodiment, the fan oscillation life tester includes a test frame 1, a test mechanism, and a height adjustment mechanism. The test mechanism is located at the top of the test frame 1, and the height adjustment mechanism is located at the bottom of the test frame for placing the fan under test. The test mechanism includes a fixed frame 2, at least one fan oscillation clamp, and a left and right rotation motor 21. The left and right rotation motor 21 is fixed on the fixed frame 2. The fan oscillation clamp includes a bracket 3 and a clamping frame 31 for clamping the fan head. The bracket 3 has a U-shaped opening facing downwards. The top of the bracket 3 is fixedly connected to the output shaft of the left and right rotation motor 21. The two sides of the clamping frame 31 are rotatably connected to the two sides of the opening of the bracket 3 through a rotating shaft 32. A set of transmission wheels 33 is provided on the side of the bracket 3 and connected by a synchronous belt 34. A pitch motor 35 is fixedly installed on the bracket 3. One rotating wheel 33 is fixedly connected to the rotating shaft 32, and the other transmission wheel 33 is fixedly connected to the output shaft of the pitch motor 35, forming a synchronous pitch drive structure.

[0024] Preferably, three workstations are set on the fixed frame 2, and each workstation is equipped with a synchronous wheel 4. The synchronous wheel 4 is fixedly connected to the top of a bracket 3 through a connecting shaft 41. A drive wheel 22 is set on the top of the left and right rotating motor 21. The drive wheel 22 is connected to the output shaft of the left and right rotating motor 21. The drive wheel 22 and the synchronous wheel 4 are connected through a synchronous belt, thus forming a multi-workstation synchronous left and right rotation structure.

[0025] Preferably, at least two sets of multi-station synchronous left and right rotation structures are provided on the fixed frame 2.

[0026] Preferably, the height adjustment mechanism includes a lifting platform 5, a lead screw 51, and a lifting motor 52. A lifting motor 52 is fixedly installed on each side of the lifting platform 5. A mounting plate 53 with screw holes is fixedly installed on the lifting platform 5. The lead screw 51 passes through the screw hole and forms a rotational lifting engagement with the screw hole. A crossbeam 11 is set on each side of the test frame 1. A bearing seat 12 is fixedly installed on the crossbeam 11. One end of the lead screw 51 is rotatably installed in the bearing seat 12, and the other end is connected to a synchronous gear 54. A drive synchronous gear 55 is fixedly sleeved on the output shaft of the lifting motor 52. A lead screw 51 is set at each end of a crossbeam 11. The drive synchronous gear 55 and the synchronous gears 54 on both sides are connected by a synchronous belt to form a synchronous lifting engagement.

[0027] Preferably, a limit switch 56 is provided on the mounting plate.

[0028] Working principle:

[0029] First, place the sample on the lifting platform 5, and adjust the lifting platform 5 to rise or fall so that the fan head is fixed to the workstation by the clamps. Adjust the initial position to zero, and use quick clamps to fix the fan base. Fix other workstations in the same way. By manually moving the fan, determine the maximum rotation and pitch angles of the fan. In this embodiment, an external PCL control system is used in actual use. Therefore, the angle is input into the system through the external PCL system, and the system automatically controls the test conditions of fan rotation and pitch. After setting the number of times, the equipment moves automatically. After reaching the number of times, the equipment stops.

[0030] Although the present invention has been illustrated and described with reference to preferred embodiments, those skilled in the art should understand that various changes in form and detail are possible within the scope of the claims.

Claims

1. A fan head shaking life test machine characterized by: The device includes a test frame, a test mechanism, and a height adjustment mechanism. The test mechanism is located at the top of the test frame, and the height adjustment mechanism is located at the bottom of the test frame. It is used to place the fan under test. The test mechanism includes a fixed frame, at least one fan oscillation clamp, and left and right rotation motors. The left and right rotation motors are fixed on the fixed frame. The fan oscillation clamp includes a bracket and a clamping frame for clamping the fan head. The bracket has a U-shaped opening facing downwards. The top of the bracket is fixedly connected to the output shaft of the left and right rotation motors. The two sides of the clamping frame are rotatably connected to the two sides of the bracket opening through rotating shafts. A set of transmission wheels is provided on the side of the bracket and connected by a synchronous belt. A pitch motor is fixedly installed on the bracket. One rotation wheel is fixedly connected to the rotating shaft, and the other transmission wheel is fixedly connected to the output shaft of the pitch motor, forming a synchronous pitch drive structure.

2. A fan head shaking life test machine according to claim 1, characterized in that: Several workstations are set on a fixed frame, and each workstation is equipped with a synchronous pulley. The synchronous pulley is fixedly connected to the top of a bracket through a connecting shaft. A drive wheel is set on the top of the left and right rotating motors. The drive wheel is connected to the output shaft of the left and right rotating motors. The drive wheel and the synchronous pulley are connected through a synchronous belt, forming a multi-workstation synchronous left and right rotating structure.

3. A fan oscillation life testing machine according to claim 2, characterized in that: At least one set of multi-station synchronous left and right rotation structures is set on the fixed frame.

4. A fan oscillation life testing machine according to claim 3, characterized in that: The height adjustment mechanism includes a lifting platform, a lead screw, and a lifting motor. A lifting motor is fixedly installed on each side of the lifting platform. A mounting plate with screw holes is fixedly installed on the lifting platform. The lead screw passes through the screw holes, forming a rotational lifting engagement. A crossbeam is installed on each side of the test frame, and a bearing seat is fixedly installed on the crossbeam. One end of the lead screw is rotatably mounted in the bearing seat, and the other end is connected to a synchronous gear. A drive synchronous gear is fixedly fitted onto the output shaft of the lifting motor. A lead screw is installed at each end of a crossbeam. The drive synchronous gear and the synchronous gears on both sides are connected by a synchronous belt, forming a synchronous lifting engagement.

5. A fan oscillation life testing machine according to claim 4, characterized in that: Install limit switches on the mounting plate.

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