Visible light lens vibration aging test device

Abstract

The utility model discloses a vibration aging test device for a visible light lens, which belongs to the technical field of vibration aging test and comprises a base and a top plate. The upper side of the base is rotationally connected with the top plate; an eccentric shaft driving assembly and an elastic supporting assembly are mounted on the base; the eccentric shaft driving assembly comprises an eccentric shaft, and an eccentric wheel of the eccentric shaft is sleeved with a top plate supporting bearing. An eccentric shaft is driven to rotate, a top plate supporting bearing does eccentric motion, the rear portion of a top plate is elastically supported upwards through an elastic supporting assembly, it is guaranteed that an outer ring of the top plate supporting bearing and the lower side of the front portion of the top plate are tightly pressed, the outer ring of the top plate supporting bearing cannot rotate, only tiny relative rolling is generated, and abrasion is avoided; and reliable and convenient pitching swing vibration aging test is realized. The whole structure is simple, the use is convenient, the cost is low, long-time non-intermittent operation can be realized, and the vibration aging test cost of the visible light lens is effectively reduced.

Description

Technical Field

[0001] The utility model belongs to the technical field of vibration aging testing, in particular to a visible light lens vibration aging testing device. Background Art

[0002] A visible light lens is an optical lens capable of capturing light within the visible wavelength range (generally 380 to 750 nanometers). Through the principles of optical imaging, it clearly presents the target object on the imaging plane. With its high resolution, high sensitivity, and intelligent features, it has demonstrated widespread application value in a variety of fields, including drones, security surveillance, industrial inspection, and military reconnaissance.

[0003] Vibration aging testing of visible light lenses is an important method for evaluating performance changes and lifespan degradation caused by vibration during long-term use. The fundamental principle of vibration aging testing is to simulate the vibration environment experienced in actual use by subjecting the lens to long-term vibration to observe performance changes and lifespan degradation. This allows for a comprehensive understanding of lens performance changes under different environmental conditions, providing a scientific basis for lens design and optimization.

[0004] Vibration aging tests for visible light lenses typically use a pitch and swing vibration tester. This device performs pitch and swing aging tests at different frequencies (primarily low frequencies) and pitch angles to test the reliability of visible light lenses. Visible light lens aging tests are characterized by long, uninterrupted cycles. Conventional swing test benches struggle to achieve frequencies of 1-10 Hz and require significant equipment time. Furthermore, conventional swing test benches struggle to maintain continuous testing for extended periods, shortening the life of the test equipment and increasing aging testing costs. Utility Model Content

[0005] In order to solve the problems that it is difficult to reach a frequency of 1-10 Hz when using a conventional swing test bench for visible light lens aging testing, the equipment occupancy time is long, and it is difficult for a conventional swing test bench to achieve long-term uninterrupted testing operations, which will shorten the life of the experimental equipment and the aging test cost is high, the utility model provides a visible light lens vibration aging test device.

[0006] The utility model is realized through the following technical solutions:

[0007] A visible light lens vibration aging test device comprises a base and a top plate capable of positioning and installing the visible light lens; the upper side of the base is connected to the top plate rotation support via a rotating shaft assembly; an eccentric shaft drive assembly and an elastic support assembly capable of elastically supporting the top plate upward are installed on the base, and the eccentric shaft drive assembly and the elastic support assembly are respectively arranged on both sides of the rotating shaft assembly; the eccentric shaft drive assembly comprises an eccentric shaft capable of being driven to rotate, and the eccentric wheel of the eccentric shaft is fitted with a top plate support bearing capable of abutting against the lower side of the top plate.

[0008] A further improvement of the present invention is that the eccentric shaft drive assembly includes a motor base connected to the base, the eccentric shaft is rotatably mounted on the motor base through a first bearing, and a motor transmission-connected to the eccentric shaft is positioned and mounted on the motor base.

[0009] A further improvement of the present invention is that the output shaft of the motor is connected to one end of the eccentric shaft through a coupling.

[0010] A further improvement of the present invention is that two oppositely arranged first bearing mounting seats are provided on the motor seat, two first bearings are installed on each first bearing mounting seat, and the inner ring end faces of two adjacent first bearings are separated and supported by a spacer ring.

[0011] A further improvement of the present invention is that the two ends of the eccentric wheel of the eccentric shaft are provided with shaft shoulders that abut and support the end faces of the adjacent first bearing inner rings; and the two ends of the eccentric shaft are respectively clamped with retaining springs that can limit the first bearing on the side of the eccentric wheel away from the eccentric shaft.

[0012] A further improvement of the present invention is that a notch is provided on the upper side of the first bearing mounting seat and is communicated with the mounting hole thereof, and the size of the notch is larger than the size of the eccentric shaft mounting shaft.

[0013] A further improvement of the present invention is that the rotating shaft assembly includes two shaft seats positioned and installed on the upper side of the base and two bearing seats positioned and installed on the lower side of the top plate; a second bearing is installed in the bearing seat, and a rotating shaft is positioned and installed on the shaft seat, and the two ends of the rotating shaft are respectively connected to the inner rings of the two second bearings.

[0014] A further improvement of the present invention is that the elastic support assembly includes a limit column vertically positioned and installed on the base, a sliding hole is opened on the lower side of the top plate and is sleeved on the outside of the top of the limit column, and an elastic body is sleeved on the outside of the limit column for elastically supporting the lower side of the top plate.

[0015] A further improvement of the present invention is that at least two limiting columns are arranged at intervals on the left and right sides along the length direction of the rotating shaft assembly, and can elastically support the top plate symmetrically on the left and right sides.

[0016] A further improvement of the present invention is that a counterweight block is detachably mounted on one side of the top plate close to the eccentric shaft drive assembly.

[0017] It can be seen from the above technical solutions that the beneficial effects of the present invention are:

[0018] During use, several visible light lenses are positioned and mounted on the upper side of the top plate. By driving the eccentric shaft on the eccentric shaft drive assembly to rotate, the top plate support bearing on the eccentric wheel of the eccentric shaft performs eccentric movement. The elastic support assembly elastically supports the rear of the top plate upward, ensuring that the outer ring of the top plate support bearing is tightly pressed against the lower side of the front of the top plate. The outer ring of the top plate support bearing does not rotate, only causing slight relative rolling without relative displacement friction, thus avoiding wear. This allows the top plate to swing around the rotating axis assembly, realizing reliable and convenient pitch, swing, and vibration aging testing of visible light lenses. The overall structure is simple, easy to use, and low in cost. It can operate continuously for a long time, effectively reducing the cost of vibration aging testing of visible light lenses and can effectively replace expensive swing test benches, with high practicality. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the technical solution of the present invention, the following is a brief introduction to the drawings required for the description. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0020] Figure 1 It is a structural diagram of a specific implementation method of the utility model.

[0021] Figure 2 This is a schematic structural diagram of an eccentric shaft drive assembly according to a specific embodiment of the present invention.

[0022] Figure 3 This is a schematic structural diagram of a rotating shaft assembly according to a specific embodiment of the present invention.

[0023] Figure 4 This is a schematic structural diagram of an elastic support assembly according to a specific embodiment of the present invention.

[0024] Figure 5 This is a schematic diagram of the eccentric shaft structure of a specific implementation method of the utility model.

[0025] In the accompanying drawings: 1. Base; 2. Eccentric shaft drive assembly; 21. Motor; 22. Coupling; 23. Motor seat; 24. First bearing; 25. Spacer; 26. Retaining spring; 27. Eccentric shaft; 28. Top plate support bearing; 3. Top plate; 4. Rotating shaft assembly; 41. Rotating shaft; 42. Shaft seat; 43. Second bearing; 44. Bearing seat; 5. Elastic support assembly; 51. Elastomer; 52. Limiting column; 6. Counterweight. DETAILED DESCRIPTION

[0026] In order to make the purpose, features, and advantages of the present invention more obvious and easy to understand, the technical solutions of the present invention will be clearly and completely described below in conjunction with the drawings in the specific embodiments. Obviously, the embodiments described below are only part of the embodiments of the present invention, not all of them. Based on the embodiments in this patent, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of this patent.

[0027] like Figure 1-5 As shown, the utility model discloses a visible light lens vibration aging test device, comprising a horizontally placed base 1 and a top plate 3 capable of positioning and installing the visible light lens; the upper side of the base 1 is connected and installed with a rotation support in the middle part of the lower side of the top plate 3 through a rotating shaft assembly 4, and the rotation axis direction of the top plate 3 is the left and right direction; an eccentric shaft driving assembly 2 and an elastic support assembly 5 capable of elastically supporting the top plate 3 upward are installed on the base 1, and the eccentric shaft driving assembly 2 and the elastic support assembly 5 are respectively arranged on both sides of the rotating shaft assembly 4, and specifically, the eccentric shaft driving assembly 2 and the elastic support assembly 5 can be respectively arranged at the front and rear ends of the base 1 (such as Figure 1 As shown); the eccentric shaft drive assembly 2 includes an eccentric shaft 27 that can be driven to rotate, and the axial direction of the eccentric shaft 27 is left and right, that is, consistent with the direction of the rotation axis of the top plate 3; the eccentric wheel of the eccentric shaft 27 is provided with a top plate support bearing 28 that can abut against the lower side of the top plate 3.

[0028] During operation, several visible light lenses are positioned and mounted on the upper side of the top plate 3. The eccentric shaft 27 of the eccentric shaft drive assembly 2 is driven to rotate, causing the top plate support bearing 28 on the eccentric wheel of the eccentric shaft 27 to move eccentrically. The elastic support assembly 5 elastically supports the rear of the top plate 3 upward, ensuring that the outer ring of the top plate support bearing 28 is tightly pressed against the front underside of the top plate 3. This prevents rotation, resulting in only slight relative rolling motion without relative displacement friction, thus preventing wear. This allows the top plate 3 to oscillate about the rotation axis assembly 4, enabling reliable and convenient pitch and roll vibration (low-frequency, less than 10 Hz) aging testing of visible light lenses. The device has a simple overall structure, is easy to use, and is inexpensive to manufacture. It can operate continuously for extended periods, effectively reducing the cost of vibration aging testing of visible light lenses and effectively replacing expensive oscillation test benches, offering excellent practicality.

[0029] Furthermore, the pitch (swing) frequency can be changed by changing the rotation speed of the eccentric shaft 27, and the pitch (swing) angle can be changed by changing the eccentricity of the eccentric shaft 27. The use is more flexible and the versatility is good.

[0030] like Figure 1As shown, a counterweight 6 is removably mounted on one end (front end) of the top plate 3 near the eccentric shaft drive assembly 2. Bolts penetrate through multiple counterweights 6 and connect them to the top plate 3. Together with the elastic support assembly 5 providing elastic support to the rear of the top plate 3, this effectively ensures that the lower side of the top plate 3 is always in contact with the outer ring of the top plate support bearing 28, ensuring the reliability of the vibration aging test.

[0031] like Figure 1 、 4 As shown, the elastic support assembly 5 includes a limiting post 52 vertically mounted on the base 1. A sliding hole is provided on the underside of the top plate 3, which is sleeved onto the outside of the top of the limiting post 52. The sliding hole is larger than the upper end of the limiting post 52 to ensure that the wall of the sliding hole and the limiting post 52 do not interfere when the top plate 3 swings. An elastic body 51 is sleeved onto the outside of the limiting post 52, providing elastic support for the underside of the top plate 3. The elastic body 51 is a spring, effectively ensuring the reliability of the elastic upward support provided to the rear of the top plate 3.

[0032] The bottom of the limit column 52 is screwed and installed with the base 1. The top of the limit column 52 is provided with a smaller insertion section and a shoulder is formed. The insertion section is inserted into the sliding hole. The shoulder can hard limit the downward swinging limit position of the rear part of the top plate 3 to prevent the top plate 3 from being excessively tilted and causing damage to the visible light lens.

[0033] Further, such as Figure 4 As shown, at least two limiting columns 52 are spaced apart along the length direction of the rotating shaft assembly 4 and can elastically support the top plate 3 symmetrically on both sides, thereby ensuring the stability and reliability of the elastic support for the rear portion of the top plate 3 upward.

[0034] like Figure 1-2 As shown, the eccentric shaft drive assembly 2 includes a motor base 23 connected to the base 1. An eccentric shaft 27 is rotatably mounted on the motor base 23 via a first bearing 24. A motor 21 is positioned and mounted on the motor base 23, which is in transmission connection with the eccentric shaft 27. The output shaft of the motor 21 is connected to one end of the eccentric shaft 27 via a coupling 22. The motor 21 drives the eccentric shaft 27 to rotate on the motor base 23 (via the first bearing 24) through the coupling 22, ensuring long-term, uninterrupted, and reliable rotation of the eccentric shaft 27.

[0035] Furthermore, the motor base 23 is provided with two opposing first bearing mounting seats, each of which is mounted with two first bearings 24. The inner ring end faces of two adjacent first bearings 24 are separated and supported by a spacer 25. The four first bearings 24 provide reliable rotational support for the mounting shaft of the thinner eccentric shaft 27, ensuring the long-term, uninterrupted rotation of the eccentric shaft 27. The spacer 25 provides abutment support for the inner rings of two adjacent first bearings 24, ensuring reliable and stable operation of the first bearings 24.

[0036] Furthermore, the eccentric shaft 27 has shoulders at both ends of the eccentric wheel that abut against the inner ring end face of the adjacent first bearing 24. A retaining spring 26 is mounted on each end of the eccentric shaft 27 to limit the first bearing 24 on the side of the eccentric wheel away from the eccentric shaft 27. This facilitates the installation of the first bearing 24, achieves axial limitation of the eccentric shaft 27 and the first bearing 24, and ensures reliable and stable rotation of the eccentric shaft 27.

[0037] The first bearing mounting seat has a notch on its upper side that communicates with its mounting hole. The notch is larger than the mounting shaft size of the eccentric shaft 27. The eccentric shaft 27 is lowered and installed through the notch. The first bearing 24, spacer 25, and retaining ring 26 are then installed from both ends of the eccentric shaft 27. This allows for convenient installation of the eccentric shaft 27 and easy replacement of eccentric shafts 27 with different eccentricities.

[0038] like Figure 3 As shown, the rotating shaft assembly 4 includes two shaft seats 42 positioned and mounted on the upper side of the base 1 and two bearing seats 44 positioned and mounted on the lower side of the top plate 3. Second bearings 43 are mounted in the bearing seats 44. The left and right rotating shaft 41 is positioned and mounted on the shaft seats 42. The rotating shaft 41 is provided with a square shaft segment. The shaft seats 42 have slots for clamping the square shaft segment. The square shaft segment is penetrated by screws that are screwed to the shaft seats 42, ensuring reliable positioning and installation of the rotating shaft 41. The two ends of the rotating shaft 41 are respectively plug-connected to the inner rings of the two second bearings 43. This provides rotational support for the top plate 3 and ensures long-term operational reliability.

[0039] When in use, the present visible light lens vibration aging test device positions several visible light lenses on the upper side of the top plate 3. By driving the eccentric shaft 27 on the eccentric shaft drive assembly 2 to rotate, the top plate support bearing 28 on the eccentric wheel of the eccentric shaft 27 performs eccentric movement. The elastic support assembly 5 elastically supports the rear portion of the top plate 3 upward, thereby ensuring that the outer ring of the top plate support bearing 28 is tightly pressed against the lower side of the front portion of the top plate 3. The outer ring of the top plate support bearing 28 does not rotate, but only produces slight relative rolling without relative displacement friction, thus avoiding wear. The top plate 3 is thereby swung about the rotating shaft assembly 4, achieving reliable and convenient pitch, swing, and vibration aging testing of the visible light lenses. The overall structure is simple, easy to use, and inexpensive. It can operate continuously for a long period of time, effectively reducing the cost of vibration aging testing of visible light lenses, and can effectively replace expensive swing test benches, with good practicality.

[0040] The various embodiments in this specification are described in a progressive manner. Each embodiment focuses on the differences from other embodiments. The same and similar parts between the various embodiments can be referenced to each other.

[0041] The terms "upper," "lower," "outer," "inner," and the like, if used in the specification and claims of the present invention and the accompanying drawings, are used to distinguish relative positions and do not necessarily define them. It should be understood that the terms used in this manner are interchangeable where appropriate, such that the embodiments of the present invention described herein can be implemented in sequences other than those illustrated or described herein. Furthermore, the terms "including," "having," and any variations thereof are intended to cover non-exclusive inclusions.

[0042] The above description of the disclosed embodiments will enable one skilled in the art to implement or use the present invention. Various modifications to these embodiments will be readily apparent to one skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention is not limited to the embodiments shown herein but is intended to conform to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A visible light lens vibration aging test device, characterized in that: The invention comprises a base (1) and a top plate (3) capable of positioning and installing a visible light lens; the upper side of the base (1) is connected and installed to the top plate (3) for rotational support via a rotating shaft assembly (4); an eccentric shaft drive assembly (2) and an elastic support assembly (5) capable of elastically supporting the top plate (3) upward are installed on the base (1), and the eccentric shaft drive assembly (2) and the elastic support assembly (5) are respectively arranged on both sides of the rotating shaft assembly (4); the eccentric shaft drive assembly (2) comprises an eccentric shaft (27) capable of rotational driving, and an eccentric wheel of the eccentric shaft (27) is provided with a top plate support bearing (28) capable of abutting against the lower side of the top plate (3).

2. The visible light lens vibration aging test device according to claim 1, characterized in that: The eccentric shaft drive assembly (2) includes a motor base (23) connected to the base (1), the eccentric shaft (27) is rotatably mounted on the motor base (23) via a first bearing (24), and a motor (21) transmission-connected to the eccentric shaft (27) is positioned and mounted on the motor base (23).

3. The visible light lens vibration aging test device according to claim 2, characterized in that: The output shaft of the motor (21) is connected to one end of the eccentric shaft (27) through a coupling (22).

4. The visible light lens vibration aging test device according to claim 2, characterized in that: Two first bearing mounting seats are arranged opposite to each other on the motor seat (23), two first bearings (24) are mounted on each first bearing mounting seat, and the inner ring end faces of two adjacent first bearings (24) are separated and supported by a spacer ring (25).

5. The visible light lens vibration aging test device according to claim 4, characterized in that: The eccentric wheel of the eccentric shaft (27) has two ends provided with shaft shoulders that are in contact with the inner ring end face of the adjacent first bearing (24) for support; and the two ends of the eccentric shaft (27) are respectively clamped with a retaining spring (26) that can limit the first bearing (24) on the side of the eccentric wheel away from the eccentric shaft (27).

6. The visible light lens vibration aging test device according to claim 4, characterized in that: A notch is provided on the upper side of the first bearing mounting seat and is communicated with the mounting hole thereof, and the size of the notch is larger than the size of the mounting shaft of the eccentric shaft (27).

7. The visible light lens vibration aging test device according to claim 1, characterized in that: The rotating shaft assembly (4) includes two shaft seats (42) positioned and installed on the upper side of the base (1) and two bearing seats (44) positioned and installed on the lower side of the top plate (3); a second bearing (43) is installed in the bearing seat (44), and a rotating shaft (41) is positioned and installed on the shaft seat (42), and the two ends of the rotating shaft (41) are respectively connected to the inner rings of the two second bearings (43).

8. The visible light lens vibration aging test device according to claim 1, characterized in that: The elastic support assembly (5) includes a limiting column (52) vertically positioned and mounted on the base (1); a sliding hole is provided on the lower side of the top plate (3) and is sleeved on the outer side of the top of the limiting column (52); and an elastic body (51) is sleeved on the outer side of the limiting column (52) and is capable of elastically supporting the lower side of the top plate (3).

9. The visible light lens vibration aging test device according to claim 1, characterized in that: The limiting columns (52) are arranged at least two at intervals along the length direction of the rotating shaft assembly (4) and are capable of elastically supporting the top plate (3) in a left-right symmetrical manner.

10. The visible light lens vibration aging test device according to claim 1, characterized in that: A counterweight (6) is detachably mounted on one side of the top plate (3) close to the eccentric shaft drive assembly (2).

Images