Dynamic balance detection device applied to radiator fan

Abstract

The utility model discloses a dynamic balance detection device applied to a radiator fan, which comprises a rack, the rack is provided with a rotary table used for placing and testing the fan, the rotary table is provided with a support rod, the top of the support rod is provided with a chute, an embedded block 1 is divided into two parts to form a top block 1 and a top block 2 which are independent from each other and are connected in the chute in a sliding manner, and the embedded block 2 is connected with the support rod. A connecting rod is arranged at the top of the supporting rod in a penetrating mode in the radial direction, a first ejector block and a second ejector block are inserted into the connecting rod at intervals, and a limiting nut is assembled on the first ejector block and the second ejector block together to limit the position of the fan. The fan limiting part is improved, in the initial stage, the size of a limiting embedded block formed by the first ejector block and the second ejector block is small, the fan can be conveniently arranged in the limiting embedded block, meanwhile, after the limiting nut is sleeved with the first ejector block and the second ejector block in a pressing mode, the first ejector block and the second ejector block expand outwards to fill gaps between the first ejector block and the embedded groove, then the fan is tightly ejected and fastened, and the process can be flexibly adjusted.

Description

Technical Field

[0001] This utility model relates to the technical field of fan production testing devices, specifically a dynamic balance testing device for radiator fans. Background Technology

[0002] A fan is a device used to generate airflow for cooling in hot weather. An electric fan is a device that uses electricity to produce airflow. The fan inside rotates when powered on, creating a natural breeze to achieve a cooling effect. Household fans include ceiling fans, overhead fans, and floor fans. Currently, the balance testing devices used for fan blades sometimes fail to meet standards during testing, posing a certain safety hazard. Therefore, fan blades must be tested after production.

[0003] The problem during fan installation is that the clearance between the slot and the insert is very small, resulting in significant jamming during insertion and making pressing down on the fan more complicated. Furthermore, pressing down on the fan can easily cause slight deformation. Secondly, while the slot fits onto the insert, there is always a gap between them, which can cause slight misalignment during rotation testing, affecting the accuracy of dynamic balance testing.

[0004] This case arose in order to resolve the aforementioned issues. Utility Model Content

[0005] (a) Technical problems to be solved

[0006] To address the shortcomings of existing technologies, this invention provides a dynamic balancing testing device for radiator fans, which solves the problems mentioned in the background section.

[0007] (II) Technical Solution

[0008] To achieve the above objectives, this utility model is implemented through the following technical solution: a dynamic balancing testing device for radiator fans, comprising a frame, a turntable for mounting and testing fans on the frame, a support rod on the turntable, a sliding groove on the top of the support rod, an insert block divided into two independent and slidably connected top block one and top block two within the sliding groove, a connecting rod radially passing through the top of the support rod, and top block one and top block two respectively inserted at intervals on the connecting rod, and a limit nut mounted on top block one and top block two to limit the fan position.

[0009] Preferably, the adjacent sidewalls of the top block one and the top block two are respectively provided with receiving grooves, and a spring is connected to the inner wall of the two receiving grooves.

[0010] Preferably, pressure grooves are respectively provided on the inner side of the top of the first top block and the second top block, and a pressure block is pivotally connected at the axial center of the limiting nut. The outer periphery of the first top block and the second top block together form a threaded groove, and the first top block and the second top block can be adapted to the limiting nut for screwing during the outward expansion process.

[0011] Preferably, a threaded groove is formed on one side of the connecting rod, and it is threadedly connected to the top block two on the corresponding side, so that the position of the top block two can be actively adjusted by rotating the connecting rod.

[0012] (III) Beneficial Effects

[0013] After adopting the above technical solution, this utility model has the following advantages compared with the prior art: This utility model provides a dynamic balance detection device for radiator fans. By improving the fan limiting part, the limiting insert formed by top block one and top block two is small in size in the initial stage, which is convenient for inserting the fan. At the same time, after the limiting nut is pressed down and fitted, top block one and top block two expand outward to fill the gap with the groove, thereby pressing and securing the fan. Moreover, the above process can be flexibly adjusted. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the present invention;

[0015] Figure 2 This utility model Figure 1 Enlarged schematic diagram of a local structure at point A;

[0016] Figure 3 This is a disassembly diagram of the fan limiting part of this utility model;

[0017] Figure 4 This is a cross-sectional schematic diagram of the fan limiting part of this utility model;

[0018] Figure 5 This is a cross-sectional view of the improved fan limiting part of this utility model.

[0019] In the diagram: 1. Frame; 2. Turntable; 3. Support rod; 4. Fan; 5. Limit nut; 6. Limit insert; 7. Screw; 8. Groove; 9. Screw block; 10. Pressure block; 11. Top block one; 12. Top block two; 13. Slide groove; 14. Connecting rod; 15. Spring; 16. Thread groove one; 17. Thread groove two; 18. Receiving groove; 19. Pressure groove. Detailed Implementation

[0020] The present invention will be further described in detail below with reference to the accompanying drawings and embodiments.

[0021] like Figure 1-2As shown: A dynamic balancing testing device for radiator fans includes a frame 1, a turntable 2 on the frame 1, and a support rod 3 axially mounted in the middle of the turntable 2. The turntable 2 is used to mount a fan 4 for testing dynamic balance. The support rod 3 is provided with a limiting insert 6, and a screw 7 is connected to its upper side. Correspondingly, a groove 8 is opened at the center of the fan 4. The groove 8 is adapted to the size of the insert. After the two are fitted and installed, the screw 7 protrudes upward and is tightened with a limiting nut 5 to secure the fan 4.

[0022] The problem with the installation of the aforementioned fan 4 is that the extra space between the slot 8 and the insert is very small, resulting in a severe jamming sensation during insertion and making it complicated to press down and insert. Furthermore, pressing down on the fan 4 can easily cause slight deformation. Secondly, while the slot 8 can fit onto the insert, there is always a gap between them, which can easily cause slight misalignment during rotation testing, affecting the accuracy of the dynamic balance test.

[0023] As attached Figure 3-4 As shown, improvements have been made to the support rod 3 and the insert at the fan 4's embedded limiting position. A groove 13 is formed at the top of the support rod 3. The insert is divided into two independent top blocks 11 and 12, which are slidably connected within the groove 13. A connecting rod 14 is radially inserted through the top of the support rod 3, and the top blocks 11 and 12 are respectively inserted into the connecting rod 14 at intervals. Receiving grooves 18 are formed on the adjacent side walls of the top blocks 11 and 12, and the inner walls of the two receiving grooves 18 are connected to both ends of a spring 15.

[0024] The top inner sides of top blocks 11 and 12 are respectively provided with pressure grooves 19. A pressure block 10 is pivotally connected at the axial center of the limiting nut 5. As the pressure block 10 is gradually pressed into the pressure grooves 19, it expands top blocks 11 and 12 to both sides until it presses against the inner wall of the groove 8 of the fan 4. Furthermore, the outer peripheries of top blocks 11 and 12 together form a threaded groove 2 17, which allows top blocks 11 and 12 to be fitted and screwed into the limiting nut 5 during the outward expansion process.

[0025] The above-mentioned configuration allows the limiting insert 6 formed by top block 11 and top block 2 12 to be small in size in the initial stage, making it easy to insert the fan 4. At the same time, after the limiting nut 5 is pressed down and inserted, top block 11 and top block 2 12 expand outward to fill the gap with the groove 8, thereby pressing and securing the fan 4. Moreover, the above process can be flexibly adjusted.

[0026] However, the problem lies in the fact that the downward pressure of the nut is limited by the dimensions of the outwardly expanding top block 11 and top block 2 12, as well as the pressure block 10, causing the limiting nut 5 to fail to press tightly against the upper surface of the fan 4. Therefore, as shown in the attached... Figure 5As shown, in this embodiment, a threaded groove 16 is opened on one side of the connecting rod 14 and threadedly connected to the top block 12 on the corresponding side. By rotating the connecting rod 14, the position of the top block 12 is actively adjusted so that, under the premise that the limit nut 5 can always press down and tighten the fan 4, the position adjustment of the top block 11 and the top block 12 can always be screwed and tightened with the limit nut 5.

[0027] The above-described embodiments are provided for illustrative purposes. Based on the above description, those skilled in the art can make various changes and modifications without departing from the inventive concept. The technical scope of this utility model is not limited to the contents of the specification; its protection scope must be determined according to the claims.

Claims

1. A dynamic balancing testing device for radiator fans, comprising a frame, wherein a turntable for mounting and testing fans is provided on the frame, characterized in that: The rotating table is provided with a supporting rod, a sliding groove is formed in the top of the supporting rod, the embedded block is divided into two parts to form a top block one and a top block two which are independent and slidably connected in the sliding groove, a connecting rod is radially arranged on the top of the supporting rod, and the top block one and the top block two are respectively and separately arranged on the connecting rod, and a limiting nut is assembled on the top block one and the top block two to limit the position of the fan.

2. The application for heat sink fan dynamic balance detection device according to claim 1, characterized in that: Respective accommodating grooves are formed in the adjacent side walls of the top block one and the top block two, and the inner walls of the two accommodating grooves are jointly connected with a spring.

3. The device for detecting dynamic balance of a radiator fan according to claim 1, characterized in that: Respective pressing grooves are formed in the inner sides of the top of the top block one and the top block two, a pressing block is pivotally connected to the axial center of the limiting nut, and the periphery of the top block one and the top block two jointly forms a second screw groove, and the top block one and the top block two can be screwed with the limiting nut during the expansion process.

4. The device for detecting dynamic balance of a radiator fan according to claim 1, characterized in that: A first screw groove is formed in one side of the connecting rod and is threadedly connected with the top block two on the corresponding side, and the position of the top block two is actively adjusted by rotating the connecting rod.

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