Vibration testing device for simulating connection strength of blade fork of ceiling fan

Abstract

The utility model relates to the technical field of fan testing, in particular to a vibration testing device for simulating the connection strength of a blade fork of a ceiling fan, which comprises a machine base, a workbench used for installing the blade fork to test the connection strength is arranged above the machine base, and a driving mechanism used for driving the workbench to reciprocate up and down is arranged on the machine base. The driving mechanism comprises a rotating shaft connected with the machine base and an eccentric part arranged on the rotating shaft and used for being matched with the bottom of the workbench, and the driving mechanism further comprises a driving assembly used for driving the rotating shaft to rotate so that the eccentric part can act on the bottom of the workbench, and therefore the workbench can move up and down in a reciprocating mode. According to the technical scheme, the eccentric part is driven by the driving mechanism to rotate to be matched with the bottom of the working table, so that the working table reciprocates up and down, the eccentric part is in full contact with the driven part in the testing process, the working table keeps stable vibration, a more accurate testing result is obtained, and the problem that an existing vibration testing device runs unstably is solved.

Description

Technical field

[0001] The utility model relates to the technical field of fan testing, in particular to a vibration testing device for simulating the connection strength of leaf clips of a ceiling fan. [Background Technology]

[0002] Currently, in the field of fan testing, technicians need to conduct strength tests on leaf clips during the R&D testing process. If undesirable phenomena such as breakage occur before the vibration test times required are met, technicians need to adjust the direction in a timely manner and formulate further R&D plans.

[0003] In the prior art Chinese utility model patent CN212030869U, a crack resistance vibration test device for fan blade assembly is disclosed. The test device uses a motor to drive an eccentric wheel to movably connect to a fixed frame through a connecting piece, thereby driving a lifting rod to move up and down, generating vibration.

[0004] However, due to the weak stress points of the connecting piece, the connection piece is easily deformed during repeated vibrations through the transmission between the connecting piece and the fixing frame and the lifting rod, resulting in the base plate not being able to move up and down in place, and then causing the fan blades to fail to meet the test standards, thus affecting the final test results.

[0005] In view of the above technical problems, the present invention is specially studied and proposed. [Utility Model Content]

[0006] The present invention aims to overcome the shortcomings of the prior art by providing a vibration test device for simulating the connection strength of a ceiling fan blade. The device utilizes a drive mechanism to rotate an eccentric portion, which engages with the bottom of a workbench, causing the workbench to reciprocate up and down. During the test, the eccentric portion maintains full contact with the driven assembly, thereby maintaining stable vibration and resolving the problem of unstable operation of existing vibration test devices. The vibration test device of the present invention offers the advantages of stable operation and more accurate test results.

[0007] The utility model is realized through the following technical solutions:

[0008] A vibration testing device for simulating the connection strength of a leaf clip of a ceiling fan includes a base 1, a workbench 2 for mounting a leaf clip for connection strength testing is provided above the base 1, a driving mechanism 4 for driving the workbench 2 to reciprocate up and down is provided on the base 1, the driving mechanism 4 includes a rotating shaft 41 connected to the base 1 and an eccentric portion 42 provided on the rotating shaft 41 for cooperating with the bottom of the workbench 2, the driving mechanism 4 also includes a driving assembly 43 for driving the rotating shaft 41 to rotate so that the eccentric portion 42 acts on the bottom of the workbench 2 so that the workbench 2 reciprocates up and down.

[0009] As in the above-mentioned vibration testing device for simulating the connection strength of a ceiling fan leaf clip, the bottom of the workbench 2 is provided with a driven component 5 for cooperating with the eccentric part 42 to drive the workbench 2 to reciprocate up and down.

[0010] As described above, in a vibration testing device simulating the connection strength of a ceiling fan leaf clip, the driven component 5 includes a fixed seat 51 provided at the bottom of the workbench 2, and also includes a guide wheel 52 provided in the fixed seat 51 for cooperating with the eccentric part 42.

[0011] As in the above-mentioned vibration testing device for simulating the connection strength of a ceiling fan leaf clip, the guide wheel 52 is rotationally matched with the fixing seat 51.

[0012] As described above, in a vibration testing device simulating the connection strength of a ceiling fan leaf clip, the driving mechanism 4 also includes a pair of bases 433 spaced apart on the base 1, and the two ends of the rotating shaft 41 rotate in conjunction with the corresponding bases 433. The driving assembly 43 is arranged on the base 1 to drive the rotating shaft 41 to rotate.

[0013] As described above, in a vibration testing device for simulating the connection strength of a ceiling fan leaf clip, the rotating shaft 41 is detachably connected to the eccentric portion 42. The rotating shaft 41 includes a first end 411 and a second end 412. At least one guide groove 414 is formed on the rotating shaft 41. The middle portion of the guide groove 414 extends toward the first end 411 of the rotating shaft 41, forming an entrance 413 at the first end 411. The second end 412 of the rotating shaft 41 extends and bends in the guide groove 414 to form a positioning groove 415.

[0014] The eccentric portion 42 is provided with a through hole 421 that slides with the rotating shaft 41. At least one protrusion 422 is provided on the inner side of the through hole 421 of the eccentric portion 42. The protrusion 422 enters the guide groove 414 from the entrance 413 and slides into the positioning groove 415. The protrusion 422 is engaged in the positioning groove 415 to limit the movement of the eccentric portion 42. A limiting component 55 is provided between the eccentric portion 42 and the rotating shaft 41 for locking the eccentric portion 42 in the positioning groove 415.

[0015] As described above, in a vibration testing device simulating the connection strength of a ceiling fan leaf clip, the limiting component 55 includes a fixed portion 56b formed at the second end 412 of the rotating shaft 41 and a compression spring 57 sleeved on the rotating shaft 41. The compression spring 57 is located between the fixed portion 56b and the eccentric portion 42 and is used to press the eccentric portion 42 to limit the protrusion 422 from disengaging from the positioning groove 415.

[0016] As in the above-mentioned vibration testing device for simulating the connection strength of a ceiling fan leaf clip, an elastic component 6 is provided between the workbench 2 and the base 1 for ensuring that the driven component 5 and the eccentric part 42 always maintain contact during the up and down movement.

[0017] As described above, in a vibration testing device simulating the connection strength of a ceiling fan leaf clip, the driving assembly 43 includes a motor 431 provided on a base 1, a driving wheel 434a provided on an output shaft 432 of the motor 431, and a driven wheel 435a provided on a rotating shaft 41, and also includes a transmission belt 436a wound between the driving wheel 434a and the driven wheel 435a.

[0018] As described above, in a vibration testing device simulating the connection strength of a ceiling fan leaf clip, a jig 201 for installing leaf clips of different models to meet different test requirements is detachably provided above the workbench 2, and the jig 201 is provided with several groups of holes 203 of the same specifications for installing leaf clips.

[0019] Compared with the prior art, the vibration test device for simulating the connection strength of a ceiling fan leaf clip of the utility model has the following advantages:

[0020] 1. In this embodiment, when the vibration testing device is being tested, the fan blades are installed on the workbench. After the installation is completed, the driving mechanism drives the rotating shaft to rotate, and the rotating shaft then drives the eccentric part to rotate. The eccentric part directly acts on the bottom of the workbench to cause the workbench to reciprocate up and down. Compared with the traditional vibration testing machine that drives the connecting piece through the eccentric wheel and then drives the base to move up and down through the connecting piece, this driving method has the advantages of smooth operation and higher vibration amplitude accuracy; at the same time, it reduces friction loss, improves energy efficiency, and reduces energy consumption.

[0021] 2. During vibration testing, the guide wheel and the eccentric portion are in rolling contact. To avoid prolonged contact with the same position of the guide wheel, this solution utilizes a rotational coupling between the guide wheel and the guide wheel shaft. This prevents long-term wear of the guide wheel in the same position and extends the service life of the guide wheel. This also prevents severe wear of the guide wheel in the same position, which could result in the worktable not moving up and down properly, ensuring that vibration accuracy remains within a stable and controllable range.

[0022] 3. The present invention realizes a detachable connection between the rotating shaft and the eccentric part, which is convenient for installation and removal, and facilitates maintenance and replacement of the eccentric part, thereby reducing downtime and additional costs caused by maintenance, while ensuring the stability and reliability of the structure. The technical solution of this application is applicable to the requirements of different types of leaf hairpin tests and has universality. Different leaf hairpin tests require different vibration amplitudes, and the vibration amplitude can be selected by replacing different types of eccentric parts.

Brief Description of the Drawings

[0023] The specific embodiments of the present invention are further described in detail below with reference to the accompanying drawings, wherein:

[0024] Figure 1 This is one of the structural diagrams of the vibration testing device in the present utility model;

[0025] Figure 2 This is the second structural diagram of the vibration testing device in the present utility model;

[0026] Figure 3 This is the third structural diagram of the vibration testing device in the present utility model;

[0027] Figure 4 This is one of the partial schematic diagrams of the driving mechanism in the present utility model;

[0028] Figure 5 This is the second partial schematic diagram of the driving mechanism in the present utility model;

[0029] Figure 6 It is a partial exploded view of the driven component in the present utility model;

[0030] Figure 7 It is a partial schematic diagram of the driven component in the present utility model;

[0031] Figure 8 This is one of the structural diagrams between the eccentric part and the rotating shaft in the utility model;

[0032] Figure 9 This is one of the assembly drawings of the embodiment of the assembly of the eccentric part and the rotating shaft in the utility model;

[0033] Figure 10 This is the second structural diagram between the eccentric part and the rotating shaft in the present invention;

[0034] Figure 11 This is the second assembly diagram of the embodiment of the assembly of the eccentric portion and the rotating shaft in the present utility model;

[0035] Figure 12 This is one of the structural diagrams of the eccentric part in the utility model;

[0036] Figure 13 This is the second structural diagram of the eccentric part in the utility model;

[0037] Figure 14 This is one of the structural diagrams of the drive assembly in the present utility model;

[0038] Figure 15 This is the second structural diagram of the drive assembly in the present utility model;

[0039] Figure 16 This is a schematic diagram of the structure of the fixture in the present utility model;

[0040] Figure 17 It is a partial schematic diagram of a part of the base in the utility model.

[0041] In the picture:

[0042] 1. Machine base; 11. Motor mounting base; 12. Strip hole; 13. Fixing plate; 14. Screw; 15. Left adjusting nut; 16. Right adjusting nut;

[0043] 2. Workbench; 201. Fixture; 202. Avoidance hole; 203. Hole position; 3. Guide rod; 31. Opening hole;

[0044] 4. Driving mechanism; 41. Rotating shaft; 411. First end; 412. Second end; 413. Entry port; 414. Guide groove; 415. Positioning groove; 42. Eccentric portion; 421. Through hole; 422. Protrusion; 43. Driving assembly; 431. Motor; 432. Output shaft; 433. Base;

[0045] 434a, driving pulley; 435a, driven pulley; 436a, transmission belt;

[0046] 434b, driving sprocket; 435b, driven sprocket; 436b, chain;

[0047] 5. Driven assembly; 51. Fixed seat; 52. Guide wheel; 53. Bearing; 54. Guide wheel shaft; 55. Limiting component; 56a. Threaded sleeve; 56b. Fixed part; 57. Compression spring; 58. Washer;

[0048] 6. Elastic component; 61. Spring; 611. Tension spring; 62. Connecting seat; 63. Connecting piece. [Specific implementation method]

[0049] The following describes the embodiments of the present invention in detail with reference to the accompanying drawings.

[0050] like Figure 1-17 As shown, the utility model includes a vibration test device for simulating the connection strength of a leaf clip of a ceiling fan, comprising a base 1, characterized in that a workbench 2 for mounting a leaf clip for connection strength testing is provided above the base 1, a drive mechanism 4 for driving the workbench 2 to reciprocate up and down is provided on the base 1, the drive mechanism 4 includes a rotating shaft 41 connected to the base 1 and an eccentric portion 42 provided on the rotating shaft 41 for cooperating with the bottom of the workbench 2, the drive mechanism 4 also includes a drive assembly 43 for driving the rotating shaft 41 to rotate so that the eccentric portion 42 acts on the bottom of the workbench 2 to reciprocate up and down the workbench 2. The base 1 is provided with a plurality of guide rods 3 that slide up and down with the workbench 2, the workbench 2 is provided with an opening 31 that slides with the guide rod 3, and the upper end of the guide rod 3 is sleeved in the opening 31 of the workbench 2 and slides with the guide rod 3.

[0051] In this embodiment, when the vibration testing device is conducting a test, the fan blades are installed on the workbench 2. After the installation is completed, the driving mechanism 4 drives the rotating shaft 41 to rotate, and the rotating shaft 41 then drives the eccentric part 42 to rotate. The eccentric part 42 directly acts on the bottom of the workbench 2 to cause the workbench 2 to reciprocate up and down. Compared with the traditional vibration testing machine that drives the connecting piece through the eccentric wheel and then drives the base to move up and down through the connecting piece, it has the advantages of smooth operation and higher vibration amplitude accuracy; at the same time, it reduces friction loss, improves energy efficiency, and thus reduces energy consumption.

[0052] In addition, the present application provides multiple guide rods 3 on the machine base 1 to slide with the workbench 2, so that the workbench 2 can be more stable when it moves up and down. In addition to using the guide rods 3 to cooperate with the workbench 2, the present application can also use guide rails and sliders to cooperate, such as providing a support plate on the machine base 1, and the guide rails are vertically installed on the support plate, and then connected to the workbench 2 via sliders. It should be noted that the method of cooperating with the workbench 2 by guide rails and sliders is not illustrated in this application, and this method is prior art.

[0053] like Figure 4-7 As shown, as a further solution of this embodiment, in order to make the up and down movement of the workbench 2 more stable and to prevent the bottom of the workbench 2 from rolling in contact with the eccentric part 42 for a long time, which may cause the workbench 2 to be damaged and inconvenient to replace, a driven component 5 is provided at the bottom of the workbench 2 for cooperating with the eccentric part 42 to drive the workbench 2 to reciprocate up and down. The driven component 5 includes a fixed seat 51 provided at the bottom of the workbench 2, and also includes a guide wheel 52 provided in the fixed seat 51 for cooperating with the eccentric part 42; that is, the eccentric part 42 transmits power to act on the bottom of the workbench 2 through the guide wheel 52. Compared with the point contact method in which the connecting piece is connected to the fixing frame in the prior art, the line contact between the eccentric part 42 and the guide wheel 52 has the advantage of stable operation.

[0054] like Figure 4-7 As shown, as a further solution of this embodiment, the guide wheel 52 is rotationally matched with the fixed seat 51; the driven assembly 5 includes a guide wheel shaft 54 ​​provided on the fixed seat 51, and the guide wheel 52 is provided on the guide wheel shaft 54, and is rotationally matched with the guide wheel shaft 54 ​​through a bearing 53. During the vibration test, the guide wheel 52 is in rolling contact with the eccentric portion 42. In order to avoid long-term contact with the same position of the guide wheel 52, this solution adopts the guide wheel 52 to rotate with the guide wheel shaft 54 ​​to avoid long-term wear of the same position of the guide wheel 52, thereby extending the service life of the guide wheel 52. It can also prevent the guide wheel 52 from being severely worn at the same position, resulting in the problem of the workbench 2 not being in place when moving up and down, thereby ensuring that the vibration accuracy remains within a stable and controllable range. In addition, the guide wheel 52 is made of nylon material with low cost, thereby reducing production costs.

[0055] like Figure 4 、 5 As shown, as a further embodiment of this embodiment, the drive mechanism 4 further includes a pair of bases 433 spaced apart on the base 1. The ends of the rotating shaft 41 rotatably engage with the corresponding bases 433. The drive assembly 43 is disposed on the base 1 to drive the rotating shaft 41. Bearings 53 are provided at both ends of the rotating shaft 41, each connected to the corresponding base 433. This embodiment reduces friction between the rotating shaft 41 and the base 433 through the rotational coordination of the bases 433 and the rotating shaft 41, resulting in smoother rotation.

[0056] like Figure 8-11 As shown, as a further solution of this embodiment, the rotating shaft 41 is detachably connected to the eccentric part 42, and the rotating shaft 41 includes a first end 411 and a second end 412. At least one guide groove 414 is provided on the rotating shaft 41, and the middle part of the guide groove 414 extends toward the first end 411 of the rotating shaft 41, forming an entrance 413 at the first end 411, and the second end 412 of the rotating shaft 41 in the guide groove 414 extends and bends to form a positioning groove 415.

[0057] The eccentric portion 42 is provided with a through hole 421 that slides with the rotating shaft 41. At least one protrusion 422 is provided on the inner side of the through hole 421 of the eccentric portion 42. The protrusion 422 enters the guide groove 414 from the entrance 413 and slides into the positioning groove 415. The protrusion 422 is engaged in the positioning groove 415 to limit the movement of the eccentric portion 42. A limiting component 55 is provided between the eccentric portion 42 and the rotating shaft 41 for locking the eccentric portion 42 in the positioning groove 415.

[0058] When assembling the eccentric portion 42 and the rotating shaft 41, the eccentric portion 42 is inserted into the rotating shaft 41 from the first end 411 of the rotating shaft 41 to the second end 412, and the through hole 421 of the eccentric portion 42 slides with the rotating shaft 41. At this time, the protrusion 422 on the inner side of the through hole 421 of the eccentric portion 42 is aligned with the entrance 413 of the guide groove 414. By applying force to the eccentric portion 42, the protrusion 422 slides into the guide groove 414 along the entrance 413. When the eccentric portion 42 slides to the bending position, it is rotated a certain angle toward the bending position and then slides to the positioning groove 415.

[0059] At this time, the protrusion 422 of the eccentric part 42 is engaged in the positioning groove 415, and the eccentric part 42 is locked in the positioning groove 415 by the limiting component 55 to ensure that the eccentric part 42 and the rotating shaft 41 do not move relative to each other, so that the eccentric part 42 and the rotating shaft 41 can work stably.

[0060] When removing the eccentric part 42, first release the lock on the eccentric part 42 through the limiting component 55. At this time, the eccentric part 42 is in a state where it can move in the positioning groove 415. The eccentric part 42 is rotated so that the protrusion 422 is correspondingly folded around the bending part, so that the protrusion 422 disengages from the positioning groove 415 and then slides into the guide groove 414. Then the eccentric part 42 continues to slide toward the first end 411 of the rotating shaft 41, and the protrusion 422 slides out of the entrance 413 along the guide groove 414 to separate the eccentric part 42 from the rotating shaft 41.

[0061] This solution achieves a detachable connection between the rotating shaft 41 and the eccentric portion 42, making installation and removal operations convenient, and facilitating maintenance and replacement of the eccentric portion 42. This reduces downtime and additional costs associated with maintenance while ensuring structural stability and reliability. Furthermore, the technical solution of this application is applicable to various leaf hairpin test environments, demonstrating its versatility. Because different leaf hairpin tests require different vibration amplitudes, the vibration amplitude can be selected by replacing different types of eccentric portions 42.

[0062] like Figure 8 、 9 As shown, as a preferred solution of the limiting component 55 of this embodiment, the limiting component 55 includes a fixed portion 56b formed on the second end 412 of the rotating shaft 41 and a compression spring 57 sleeved on the rotating shaft 41. The compression spring 57 is located between the fixed portion 56b and the eccentric portion 42 and is used to press the eccentric portion 42 to limit the protrusion 422 from detaching from the positioning groove 415; a washer 58 is also provided between the eccentric portion 42 and the compression spring 57 to increase the friction force to ensure the stability between the two.

[0063] In this embodiment, a fixing portion 56b is provided on the rotating shaft 41, and the compression spring 57 is moved from the first end 411 of the rotating shaft 41 to the position of the fixing portion 56b. When assembling the eccentric portion 42 and the rotating shaft 41, the eccentric portion 42 rotates the shaft 41 from the entrance 413 of the first end 411 of the rotating shaft 41. The protrusion 422 slides on the rotating shaft 41 toward the bend of the guide groove 414. One side of the eccentric portion 42 presses against the washer 58, thereby preventing the compression spring 57 from sliding. The sliding continues to press the compression spring 57. The eccentric portion 42 is then rotated a certain angle so that the protrusion 422 engages with the positioning groove 415. At this time, the compression spring 57 and the washer 58 cooperate to press against the eccentric portion 42 to restrict the movement of the eccentric portion 42, completing the assembly.

[0064] When removing the eccentric portion 42, force is applied to the eccentric portion 42, pushing the compression spring 57 toward the fixed portion 56b. The eccentric portion 42 is in a movable state in the positioning groove 415. The eccentric portion 42 is rotated so that the protrusion 422 is correspondingly bent around the bend, thereby disengaging the positioning groove 415 and sliding into the guide groove 414. The eccentric portion 42 then continues to slide toward the first end 411 of the rotating shaft 41. The protrusion 422 slides out of the entrance 413 along the guide groove 414, thereby separating the eccentric portion 42 from the rotating shaft 41. This embodiment adopts a detachable method in which the compression spring 57 cooperates with a stop to prevent movement between the eccentric portion 42 and the rotating shaft 41, making operation convenient and quick.

[0065] like Figure 10 、 11 As shown in FIG. 5 , as another preferred embodiment of the position-limiting member 55 of this embodiment, the position-limiting member 55 includes a threaded sleeve 56 a disposed at the second end 412 of the rotating shaft 41. The threaded sleeve 56 a is locked to the rotating shaft 41 through threaded engagement to abut against one side of the eccentric portion 42 to prevent the protrusion 422 from disengaging from the positioning groove 415. A washer 58 is further disposed between the eccentric portion 42 and the threaded sleeve 56 a to increase friction and ensure tightness and stability between the two.

[0066] In this embodiment, a threaded sleeve 56a is provided on the rotating shaft 41, and its threads engage with a stop. When assembling the eccentric portion 42, the threaded sleeve 56a is inserted into the rotating shaft 41 from the first end 411 of the rotating shaft 41. The threaded sleeve 56a is slid so that the threads on the inner side of the threaded sleeve 56a engage and lock with the threaded portion of the rotating shaft 41. The eccentric portion 42 is assembled onto the rotating shaft 41, and the eccentric portion 42 is slid and rotated a certain angle at the bend so that the protrusion 422 engages with the positioning groove 415. The threaded sleeve 56a is then rotated toward the eccentric portion 42. The washer 58 is disposed between the threaded sleeve 56a and the eccentric portion 42, pressing against one side of the eccentric portion 42 to restrict the movement of the eccentric portion 42, completing the assembly. This embodiment adopts a detachable threaded sleeve 56a that engages with the stop to prevent movement between the eccentric portion 42 and the rotating shaft 41, making operation convenient and quick.

[0067] like Figure 2 、 5As shown, a further solution of this embodiment is that an elastic component 6 is provided between the workbench 2 and the machine base 1 for keeping the driven component 5 and the eccentric part 42 in contact at all times during the up and down movement. Specifically, the elastic component 6 includes a spring 61, a connecting seat 62 provided on the base 433 of the workbench 2, and a connecting piece 63 provided on the machine base 1, the upper end of the spring 61 is connected to the connecting seat 62 and the lower end is connected to the connecting piece 63. In order to facilitate the adjustment of the tension of the spring 61, the upper end of the spring 61 described in this application is threadedly connected to the base 433 of the workbench 2 with the connecting seat 62, and the lower end of the spring 61 is threadedly connected to the machine base 1 with the connecting piece 63. When the workbench 2 is at the highest point during the movement, the spring 61 is in a stretched state; during the up and down movement of the workbench 2, the action of the spring 61 enables the driven component 5 to always keep in contact with the eccentric part 42, so as to ensure stable operation of the vibration process.

[0068] like Figure 5 As shown, in the present application, the above-mentioned spring 61 can be replaced with a tension spring 611 that acts on the bottom of the workbench 2 to provide a pulling force to pull the workbench 2 down to a specific position. The upper end of the tension spring 611 is connected to the workbench 2 through a connecting seat 62, and the lower end is locked to the machine base 1 through a connecting piece 63. When the workbench 2 moves upward, the tension spring 611 is pulled, and the tension spring 611 produces tensile deformation in the tensile direction. The number of elastic components 6 can be set to one or more; when there are multiple elastic components 6, the elastic components 6 work together to make the contact between the driven component 5 and the eccentric part 42 more stable during the fall of the workbench 2, so as to ensure that the vibration of the workbench 2 is stable and ultimately obtain accurate test results.

[0069] like Figure 14 As shown, as a preferred embodiment of this embodiment, the drive assembly 43 includes a motor 431 mounted on the base 1, a driving pulley 434a mounted on the output shaft 432 of the motor 431, and a driven pulley 435a mounted on the rotating shaft 41. It also includes a transmission belt 436a wound between the driving pulley 434a and the driven pulley 435a. This embodiment, through the transmission method of the driving pulley 434a, the driven pulley 435a, and the transmission belt 436a, has low maintenance costs and is characterized by smooth rotation and reduced abnormal noise during operation.

[0070] like Figure 15 As shown, as another preferred solution of this embodiment, the driving component 43 includes a motor 431 arranged on the machine base 1, a driving sprocket 434b arranged on the output shaft 432 of the motor 431, and a driven sprocket 435b arranged on the rotating shaft 41, and also includes a chain 436b wound between the driving sprocket 434b and the driven sprocket 435b. This embodiment has a compact structure and high transmission accuracy during operation through the transmission method of the driving sprocket 434b, the driven sprocket 435b and the chain 436b.

[0071] As another preferred embodiment of this embodiment, the drive assembly 43 includes a motor 431 mounted on the base 1, a driving gear mounted on the output shaft 432 of the motor 431, and a driven gear mounted on the rotating shaft 41 and meshing with the driving gear. This embodiment, through the meshing of the driving and driven gears, features smooth transmission and high efficiency. It should be noted that the coupling between the driving and driven gears in the drive assembly 43 is not illustrated in the figures of this application.

[0072] like Figure 16 As shown, as a further solution of this embodiment, in order to meet the testing requirements of different types of leaf clips, a jig 201 for mounting different types of leaf clips to meet different testing requirements is detachably provided above the workbench 2. The jig 201 is provided with several groups of holes 203 of the same specifications for mounting leaf clips. The jig 201 is correspondingly provided with avoidance holes 202 for the guide rod 3 to pass through, preventing the jig 201 from being squeezed or collided during the test process.

[0073] The vibration testing device in this application uses a drive mechanism 4 to drive the workbench 2 up and down, thereby driving the jig 201 to reciprocate up and down. This embodiment provides jigs 201 with different models to accommodate different leaf clips for vibration testing, eliminating the need to equip multiple models of vibration testing devices and reducing testing costs. The jig 201 is provided with multiple sets of holes 203 of the same size, enabling simultaneous testing of multiple leaf clips, effectively improving testing efficiency.

[0074] For easy disassembly, the connection between the fixture 201 and the workbench 2 can be a snap fit, a latch, a limit block, or a fastener for detachably connecting the fixture 201 to the workbench 2, including but not limited to the mutual cooperation of the above connection methods.

[0075] like Figure 17As shown, as a further solution of this embodiment, a motor mounting base 11 is provided on the machine base 1, the motor 431 is provided on the motor mounting base 11, and a strip hole 12 is provided on the motor mounting base 11; a fixing plate 13 is also provided on the machine base 1, and a screw 14 is provided in the motor mounting base 11, one end of the screw 14 is connected to the fixing plate 13, the left end of the screw 14 is provided with a left adjusting nut 15, and the right end of the screw 14 is provided with a right adjusting nut 16. Adjust the left adjusting nut 15 to reduce the distance between the driving wheel 434a and the driven wheel 435a, or the driving sprocket 434b and the driven sprocket 435b, so that the transmission belt 436a or the chain 436b can be placed between the driving wheel 434a and the driven wheel 435a, or the driving sprocket 434b and the driven sprocket 435b, and then adjust the right adjusting nut 16 to lock it with the fixing plate 13, tighten the transmission belt 436a or the chain 436b, and screw the strip hole 12 to the fixing plate 13 to complete the installation.

Claims

1. A vibration test device for simulating the connection strength of a ceiling fan leaf clip, comprising a base (1), characterized in that A workbench (2) for mounting a leaf clip for connection strength testing is provided above the machine base (1); a driving mechanism (4) for driving the workbench (2) to move up and down is provided on the machine base (1); the driving mechanism (4) comprises a rotating shaft (41) connected to the machine base (1) and an eccentric portion (42) provided on the rotating shaft (41) for cooperating with the bottom of the workbench (2); the driving mechanism (4) further comprises a driving assembly (43) for driving the rotating shaft (41) to rotate so that the eccentric portion (42) acts on the bottom of the workbench (2) to cause the workbench (2) to move up and down.

2. The vibration test device for simulating the connection strength of a ceiling fan leaf clip according to claim 1 is characterized in that The bottom of the workbench (2) is provided with a driven component (5) for cooperating with the eccentric portion (42) to drive the workbench (2) to move up and down reciprocatingly.

3. The vibration testing device for simulating the connection strength of a ceiling fan leaf clip according to claim 2 is characterized in that The driven assembly (5) includes a fixed seat (51) arranged at the bottom of the workbench (2), and also includes a guide wheel (52) arranged in the fixed seat (51) for cooperating with the eccentric part (42).

4. The vibration testing device for simulating the connection strength of a ceiling fan leaf clip according to claim 3 is characterized in that The guide wheel (52) is rotationally matched with the fixing seat (51).

5. The vibration testing device for simulating the connection strength of a ceiling fan leaf clip according to claim 1 is characterized in that The driving mechanism (4) further comprises a pair of bases (433) spaced apart and arranged on the machine base (1); both ends of the rotating shaft (41) are rotatably engaged with the corresponding bases (433); and the driving assembly (43) is arranged on the machine base (1) to drive the rotating shaft (41) to rotate.

6. The vibration testing device for simulating the connection strength of a ceiling fan leaf clip according to claim 1 is characterized in that The rotating shaft (41) is detachably connected to the eccentric portion (42). The rotating shaft (41) includes a first end (411) and a second end (412). At least one guide groove (414) is provided on the rotating shaft (41). The middle portion of the guide groove (414) extends toward the first end (411) of the rotating shaft (41), forming an inlet (413) at the first end (411). The second end (412) of the rotating shaft (41) extends and bends in the guide groove (414) to form a positioning groove (415). The eccentric portion (42) is provided with a through hole (421) that cooperates with and slides with the rotating shaft (41). At least one protrusion (422) is provided inside the through hole (421) of the eccentric portion (42). The protrusion (422) enters the guide groove (414) from the entrance (413) and slides into the positioning groove (415). The protrusion (422) is engaged with the positioning groove (415) to limit the movement of the eccentric portion (42). A limiting component (55) for locking the eccentric portion (42) in the positioning groove (415) is provided between the eccentric portion (42) and the rotating shaft (41).

7. The vibration testing device for simulating the connection strength of a ceiling fan leaf clip according to claim 6, characterized in that The limiting component (55) includes a fixing portion (56b) formed on the second end (412) of the rotating shaft (41) and a compression spring (57) sleeved on the rotating shaft. The compression spring (57) is located between the fixing portion (56b) and the eccentric portion (42) and is used to press the eccentric portion (42) to limit the protrusion (422) from leaving the positioning groove (415).

8. The vibration testing device for simulating the connection strength of a ceiling fan leaf clip according to claim 2, characterized in that An elastic component (6) is provided between the workbench (2) and the machine base (1) for ensuring that the driven component (5) and the eccentric portion (42) always maintain contact during up and down movement.

9. The vibration testing device for simulating the connection strength of a ceiling fan leaf clip according to claim 1, characterized in that The driving assembly (43) includes a motor (431) provided on a machine base (1), a driving wheel (434a) provided on an output shaft (432) of the motor (431), and a driven wheel (435a) provided on a rotating shaft (41), and also includes a transmission belt (436a) wound between the driving wheel (434a) and the driven wheel (435a).

10. The vibration testing device for simulating the connection strength of a ceiling fan leaf clip according to any one of claims 1 to 9, characterized in that A jig (201) for mounting leaf clips of different models to meet different testing requirements is detachably provided above the workbench (2), and the jig (201) is provided with a plurality of groups of holes (203) of the same specification for mounting leaf clips.

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