Detachable eccentric driving structure applied to blade fork vibration testing device

Abstract

The utility model relates to the technical field of fan blade testing equipment, in particular to a detachable eccentric driving structure applied to a blade fork vibration testing device, which comprises a rotating shaft and an eccentric part sleeved on the rotating shaft and used for driving a workbench in the vibration testing device to move up and down, the eccentric part can be installed in the preset position of the rotating shaft from the first end, and the eccentric driving structure further comprises a limiting component used for locking the eccentric part on the preset position of the rotating shaft. According to the invention, the rotating shaft and the eccentric part are detachably connected, so that the eccentric part is more convenient to mount and dismount, the eccentric part is convenient to maintain and replace, and the downtime and extra cost caused by maintenance can be reduced.

Description

TECHNICAL FIELD

[0001] The utility model relates to fan blade test equipment technical field, concretely relates to a detachable eccentric drive structure applied to the vibration test device of leaf. BACKGROUND

[0002] At present in the fan test field, the technical personnel need to carry out strength test to the leaf in the development test process, if the number of not reaching the vibration test requirement breaks down and other bad phenomenon, then need the technical personnel to adjust direction in time, and make further development plan.

[0003] In the prior art CN212030869U Chinese utility model patent, a kind of fan blade assembly's anti-cracking vibration test device is disclosed, the test device utilizes motor-driven eccentric wheel to be connected with fixed frame by connecting piece and then drive lifting rod to move up and down, and generate vibration.

[0004] However, due to the weak stress point of connecting piece, through the transmission cooperation of connecting piece and fixed frame and lifting rod, connecting piece is easily deformed and damaged in repeated vibration process, which causes the problem that the base plate cannot run in place, and further causes the fan blade to not meet the test standard, thereby affecting the final test result. If different fan blades need to be tested, different vibration amplitudes are required, therefore, different sizes of connecting pieces need to be replaced to drive the fixed frame, so as to meet the requirement of different vibration amplitudes, but the connecting piece is fixedly arranged and inconvenient to disassemble and replace. In addition to the way of replacing the connecting piece, different models of test devices can also be directly purchased for testing, but the test cost is higher in this way. SUMMARY

[0005] The technical problem to be solved by the present application is to provide an eccentric drive structure applied to the vibration test device of leaf, which can meet the test requirements of different models of leaf by being quickly replaced and disassembled, and solve the problem that the existing test device cannot adapt to different vibration requirements, and has the advantage of adapting to different test requirements.

[0006] To solve the above technical problems, the present application provides an eccentric drive structure applied to the vibration test device of leaf, which includes a rotating shaft and an eccentric part disposed on the rotating shaft for driving the workbench of the vibration test device to move up and down, the rotating shaft includes a first end and a second end, the eccentric part can be assembled from the first end to the preset position of the rotating shaft, and the eccentric drive structure further includes a limiting component for locking the eccentric part at the preset position of the rotating shaft.

[0007] The application discloses a detachable eccentric driving structure applied to a leaf-shaped vibration testing device.

[0008] The application discloses a detachable eccentric driving structure applied to a leaf-shaped vibration testing device.

[0009] The application discloses a detachable eccentric driving structure applied to a leaf-shaped vibration testing device.

[0010] The application discloses a detachable eccentric driving structure applied to a leaf-shaped vibration testing device.

[0011] The application discloses a detachable eccentric driving structure applied to a leaf-shaped vibration testing device.

[0012] The application discloses a detachable eccentric driving structure applied to a leaf-shaped vibration testing device.

[0013] The application discloses a detachable eccentric driving structure applied to a leaf-shaped vibration testing device.

[0014] Compared with the prior art, the application discloses a detachable eccentric driving structure applied to a leaf-shaped vibration testing device.

[0015] 1、The application discloses a detachable eccentric driving structure applied to a leaf-shaped vibration testing device.

[0016] 2, the eccentric part of the application can be disassembled and replaced, different vibration amplitude requirements can be realized by replacing different types of eccentric parts, and different types of vane test requirements can be met, which is convenient for users to test. BRIEF DESCRIPTION OF DRAWINGS

[0017] The specific embodiments of the application will be further described in detail below with reference to the accompanying drawings.

[0018] Figure 1 is the structure diagram of the eccentric driving structure installed on the vane vibration test device in the utility model.

[0019] Figure 2 is Figure 1 the enlarged structure diagram of A in the utility model.

[0020] Figure 3 is the structure diagram of the utility model.

[0021] Figure 4 is the exploded structure diagram of the utility model.

[0022] Figure 5 is another structure diagram of the utility model.

[0023] Figure 6 is another exploded structure diagram of the utility model.

[0024] Figure 7 is the structure diagram of the eccentric part in the utility model.

[0025] Figure 8 is another structure diagram of the eccentric part in the utility model.

[0026] Figure 9 is still another structure diagram of the eccentric part in the utility model.

[0027] Figure 10 is the structure diagram of the rotating shaft in the utility model.

[0028] In the figure: 1, workbench; 41, rotating shaft; 411, first end; 412, second end; 413, inlet; 414, guide groove; 415, positioning groove; 42, eccentric part; 421, through hole; 422, protrusion;

[0029] 55, limiting part; 56a, threaded sleeve; 56b, fixed part; 57, compression spring; 58, washer. DETAILED DESCRIPTION

[0030] The embodiments of the application will be described in detail below with reference to the accompanying drawings.

[0031] As Figures 1-10As shown, the present invention includes a detachable eccentric drive structure applied to a leaf hairpin vibration testing device, including a rotating shaft 41, and an eccentric portion 42 sleeved on the rotating shaft 41 for driving the workbench 1 in the vibration testing device to move up and down, the rotating shaft 41 includes a first end 411 and a second end 412, the eccentric portion 42 can be installed from the first end 411 to a preset position of the rotating shaft 41, and the eccentric drive structure also includes a limiting component 55 for locking the eccentric portion 42 at a preset position of the rotating shaft 41.

[0032] When testing a leaf hairpin, the leaf hairpin is mounted on a workbench 1, and a driving mechanism (not shown) drives the rotating shaft 41 to rotate. The rotating shaft 41 then drives the eccentric portion 42 to rotate. The eccentric portion 42 then acts directly or indirectly on the bottom of the workbench 1, thereby driving the workbench 1 to move up and down, thereby testing the leaf hairpin. In the past, different vibration testing devices were required for different types of leaf hairpins, which resulted in high testing costs. Furthermore, the eccentric portion 42 is a wearing part that is easily damaged during long-term use. If it is not replaced, the workbench 1 will not operate properly, ultimately resulting in inaccurate test results. The existing fixing portion 56b is generally fixed, making it inconvenient to disassemble and repair.

[0033] By providing a detachable connection between the rotating shaft 41 and the eccentric portion 42, this application facilitates both installation and removal of the eccentric portion 42, facilitating maintenance and replacement of the eccentric portion 42, thereby reducing downtime and additional costs associated with maintenance. Because different leaf hairpin tests require different vibration amplitudes, different vibration amplitude requirements can be achieved by replacing different types of eccentric portions 42, thus providing versatility and adaptability to the requirements of different leaf hairpin tests.

[0034] like Figures 3 to 6 As a further embodiment of this embodiment, at least one guide groove 414 is defined 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. A positioning groove 415 is formed by extending and bending in the guide groove 414 to limit the movement of the eccentric portion 42. 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 inside the through hole 421 of the eccentric portion 42. The protrusion 422 enters the guide groove 414 through the entrance 413 and slides into the positioning groove 415. The protrusion 422 engages with the positioning groove 415 to limit the movement of the eccentric portion 42. The limiting component 55 locks the eccentric portion 42 in the positioning groove 415.

[0035] In the process of assembling the eccentric part 42 and the rotating shaft 41, the eccentric part 42 is sleeved on the rotating shaft 41 from the first end 411 to the second end 412 of the rotating shaft 41, and the through hole 421 of the eccentric part 42 is in sliding fit with the rotating shaft 41. At this time, the protrusion 422 inside the through hole 421 of the eccentric part 42 is aligned with the entrance 413 of the guide groove 414. By applying force to the eccentric part 42, the protrusion 422 is slid along the entrance 413 into the guide groove 414. When the eccentric part 42 slides to the bending position, it is turned at a certain angle in the direction of the bending position and then slid into the positioning groove 415.

[0036] At this time, the protrusion 422 of the eccentric part 42 is clamped in the positioning groove 415, and the eccentric part 42 is locked in the positioning groove 415 by the limiting part 55, so as to ensure that the eccentric part 42 and the rotating shaft 41 do not move relative to each other, thereby making the eccentric part 42 and the rotating shaft 41 work stably.

[0037] When disassembling the eccentric part 42, first, the locking of the eccentric part 42 by the limiting part 55 is released. At this time, the eccentric part 42 is in a state of being movable in the positioning groove 415. The eccentric part 42 is turned so that the protrusion 422 is correspondingly turned out of the bending position, so that the protrusion 422 is separated from the positioning groove 415, and then slid into the guide groove 414. Subsequently, the eccentric part 42 continues to slide in the direction of the first end 411 of the rotating shaft 41, and the protrusion 422 slides out of the entrance 413 along the guide groove 414, so as to separate the eccentric part 42 from the rotating shaft 41.

[0038] As a further scheme of the embodiment, a gasket 58 for increasing friction is further arranged between the eccentric part 42 and the limiting part 55. By arranging the gasket 58, the eccentric part 42 can be prevented from loosening and falling off.

[0039] As Figure 3 , Figure 4 , Figure 7 , Figure 8As shown in the figure, as one preferred solution of the present embodiment, the limiting component 55 comprises a fixed part 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 part 56b and the eccentric part 42 for pressing the eccentric part 42 to limit the protrusion 422 from the positioning groove 415. In the present embodiment, the rotating shaft 41 is provided with the fixed part 56b, and the compression spring 57 is moved from the first end 411 of the rotating shaft 41 to the position of the fixed part 56b. When assembling the eccentric part 42 and the rotating shaft 41, the eccentric part 42 is rotated from the first end 411 of the rotating shaft 41, the protrusion 422 slides on the rotating shaft 41 to the bending part of the guide groove 414, one side of the eccentric part 42 abuts against the washer 58 to stop the sliding of the compression spring 57, and the eccentric part 42 is continuously slid to make the compression spring 57 in a compressed state, then the eccentric part 42 is rotated by a certain angle to make the protrusion 422 engaged in the positioning groove 415, at this time, the compression spring 57 cooperates with the washer 58 to abut against the eccentric part 42 to limit the movement of the eccentric part 42, and the assembly is completed.

[0040] When disassembling the eccentric part 42, the eccentric part 42 is forced, the compression spring 57 is pushed towards the fixed part 56b, the eccentric part 42 is in a movable state in the positioning groove 415, the eccentric part 42 is rotated to make the protrusion 422 correspondingly bend out of the bending part, so that the protrusion 422 is separated from the positioning groove 415, then slides into the guide groove 414, and then the eccentric part 42 continues to slide towards the first end 411 of the rotating shaft 41, the protrusion 422 slides out of the entrance 413 along the guide groove 414, so that the eccentric part 42 is separated from the rotating shaft 41. The present embodiment adopts the detachable mode of the compression spring 57 cooperating with the stopper to stop the movement between the eccentric part 42 and the rotating shaft 41, which is convenient and fast to operate.

[0041] As shown in the figure, Figure 5 , Figure 6 , Figure 7 , Figure 8 As another preferred solution of the present embodiment, the limiting component 55 comprises a threaded sleeve 56a arranged on the second end 412 of the rotating shaft 41, the threaded sleeve 56a is locked on the rotating shaft 41 by threaded cooperation to abut against one side of the eccentric part 42 to limit the protrusion 422 from the positioning groove 415.

[0042] In this embodiment, the rotating shaft 41 is provided with a threaded sleeve 56a matched with a stopper. When assembling the eccentric part 42, the threaded sleeve 56a is sleeved on the first end 411 of the rotating shaft 41, and the threaded sleeve 56a is slid to match the threads inside the threaded sleeve 56a with the threaded part of the rotating shaft 41. Then the eccentric part 42 is assembled on the rotating shaft 41, and the eccentric part 42 is slid and rotated at a certain angle at the bending part to make the protrusion 422 engaged in the positioning groove 415. Then the threaded sleeve 56a is rotated towards the eccentric part 42 and screwed in. The washer 58 is sleeved between the threaded sleeve 56a and the eccentric part 42, and abuts against one side of the eccentric part 42 to limit the movement of the eccentric part 42, thereby completing the assembly. In this embodiment, the threaded sleeve 56a is matched with the stopper in a detachable manner to limit the movement between the eccentric part 42 and the rotating shaft 41, which is convenient and fast.

[0043] As shown in Figure 9 , Figure 10 , as a further scheme of this embodiment, in order to make the connection of the eccentric part 42 more stable, the guide groove 414 is provided with four grooves and is arranged around the rotating shaft 41 at equal intervals, and correspondingly, the protrusion 422 is also provided with four protrusions. By providing multiple guide grooves 414, the connection of the eccentric part 42 can be more stable, and multiple protrusions 422 can be divided into forces to prevent damage to the protrusion 422.

[0044] As shown in Figure 9 , Figure 10 , as a further scheme of this embodiment, two positioning grooves 415 are formed in each guide groove 414, and correspondingly, the through hole 421 of the eccentric part 42 is provided with two protrusions 422 corresponding to the positioning grooves 415. Similarly, by providing two positioning grooves 415 and corresponding protrusions 422 in each guide groove 414, the connection of the eccentric part 42 can be more stable.

Claims

1. A detachable eccentric driving structure applied to a leaf vibration testing device, characterized in that The eccentric part (42) is sleeved on the rotating shaft (41) for driving the workbench (1) in the vibration testing device to run up and down, the rotating shaft (41) comprises a first end (411) and a second end (412), the eccentric part (42) can be loaded into the preset position of the rotating shaft (41) from the first end (411), and the eccentric driving structure further comprises a limiting component (55) for locking the eccentric part (42) at the preset position of the rotating shaft (41).

2. The eccentric drive structure detachably applied to the vibration testing device of a leaf chisel according to claim 1, characterized in that The rotating shaft (41) is provided with at least one guide groove (414), the middle part of the guide groove (414) extends to the first end (411) of the rotating shaft (41), and an entrance (413) is formed at the first end (411), and the positioning groove (415) for limiting the eccentric part (42) is formed by extending and bending in the guide groove (414).

3. The eccentric drive structure according to claim 2, wherein The eccentric part (42) is provided with a through hole (421) matched with the rotating shaft (41) for sliding, at least one protrusion (422) is arranged in the through hole (421) of the eccentric part (42), the protrusion (422) enters the guide groove (414) from the entrance (413) and slides into the positioning groove (415), the protrusion (422) is clamped in the positioning groove (415) to limit the movement of the eccentric part (42), and the limiting component (55) locks the eccentric part (42) in the positioning groove (415).

4. The eccentric drive structure detachably applied to the vibration testing device of a leaf chisel according to claim 2, characterized in that A gasket (58) for increasing friction is further arranged between the eccentric part (42) and the limiting component (55).

5. The eccentric drive structure according to claim 2, wherein The limiting component (55) comprises a fixed part (56b) formed at the second end (412) of the rotating shaft (41) and a compression spring (57) sleeved on the rotating shaft, and the compression spring (57) is located between the fixed part (56b) and the eccentric part (42) for pressing the eccentric part (42) to limit the protrusion (422) from being separated from the positioning groove (415).

6. The eccentric drive structure of claim 2, wherein The limiting component (55) comprises a threaded sleeve (56a) arranged at the second end (412) of the rotating shaft (41), and the threaded sleeve (56a) is locked on the rotating shaft (41) by threaded cooperation to abut against one side of the eccentric part (42) to limit the protrusion (422) from being separated from the positioning groove (415).

7. The eccentric drive structure according to claim 3, wherein The guide groove (414) is provided with four guide grooves arranged at equal intervals around the rotating shaft (41), and correspondingly, the protrusion (422) is also provided with four protrusions.

8. The eccentric drive structure of claim 3, wherein Each guide groove (414) is formed with two positioning grooves (415), and correspondingly, the inner side of the through hole (421) of the eccentric part (42) is provided with two protrusions (422) corresponding to the positioning grooves (415).

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