Infrared polarization imager testing device based on worm and gear mechanism

Abstract

The utility model discloses an infrared polarization imager testing device based on a worm and gear mechanism. The infrared polarization imager testing device comprises a worm and gear reverse movement mechanism, a front polaroid installation frame, a front polaroid, a rear polaroid installation frame, a rear polaroid, a one-dimensional rotary table, an aluminum profile supporting frame and a horizontal adjustment moving substrate. The device is reasonable, simple and compact in structure, high in reliability, easy to manufacture and easy and convenient to install, the worm gear and worm mechanism in which one worm drives two worm gears is adopted for transmission, so that the two tested polaroids can completely synchronously rotate oppositely in the opposite directions, the one-dimensional rotary table mechanism is adopted, and the two tested polaroids can rotate in the same direction at the same time; and meanwhile, mechanism self-locking in a vibration environment can be realized. The universal wheels are adopted to facilitate movement, the testing device can be adjusted to be horizontal by adjusting the leveling supporting feet, and high-precision performance testing of the infrared polarization imager is achieved.

Description

Technical Field

[0001] The invention patent relates to an infrared polarization imager test device, specifically to an infrared polarization imager test device based on a worm gear mechanism. Background Art

[0002] Polarization imaging is a technology that collects polarization information of the target to be measured, obtains target polarization data and finally realizes imaging. An infrared polarization imager is a device that uses polarization imaging technology for infrared imaging. It can simultaneously obtain target radiation intensity information and polarization image information, and fuse the two to enhance the detection capability of the infrared system. The infrared polarization imager is an emerging detection device. After its development, it needs to be tested for performance. The current testing method mainly uses two polarizers placed between the device and the detection target. The two polarizers can rotate simultaneously or relatively. The target information is obtained through the different states of the two polarizers to test the performance of the infrared polarization imager. At present, there is no economical and reliable infrared polarization imager test device to realize the performance test of the infrared polarization imager. Summary of the invention

[0003] The purpose of the present invention is to provide a worm gear mechanism-based infrared polarization imager test device with compact structure, simple control and low cost, which is suitable for various infrared polarization imagers. The two test polarizers in the test device can rotate in the same direction at the same time or in opposite directions synchronously, and can achieve self-locking in a vibration environment, which is more suitable for mature market use and scientific research use, and meets the needs of high-precision performance testing of infrared polarization imagers.

[0004] In order to achieve the above object, the present invention adopts the following technical solutions:

[0005] An infrared polarization imager test device based on a worm gear mechanism comprises a worm gear reverse motion mechanism 1, a front polarizer mounting frame 2, a front polarizer 3, a rear polarizer mounting frame 4, a rear polarizer 5, a one-dimensional turntable 6, an aluminum profile support frame 7, and a horizontal adjustment movable substrate 8; the characteristics are:

[0006] The worm gear reverse motion mechanism 1 comprises a mechanism base 1-1, a worm 1-2, a worm wheel 1-3, a front worm wheel bearing 1-4, a rear worm wheel bearing 1-5, a front worm wheel 1-6, a rear worm wheel 1-7, a front worm wheel cover plate 1-8, and a rear worm wheel cover plate 1-9; it is characterized in that: the lower part of the mechanism base 1-1 is a disc structure, the upper front side is a front worm wheel bracket, the upper rear side is a rear worm wheel bracket, the upper left side is a left bearing seat, and the upper right side is a right bearing seat; the mechanism The left bearing seat of the mechanism base 1-1 and the center holes of the right bearing seat of the mechanism base 1-1 are both equipped with deep groove ball bearings, the left end shaft sleeve of the worm 1-2 is installed in the inner ring of the deep groove ball bearing of the left bearing seat of the mechanism base 1-1, and the right end shaft sleeve of the worm 1-2 is installed in the inner ring of the deep groove ball bearing of the right bearing seat of the mechanism base 1-1. The worm 1-2 is axially positioned by a shaft shoulder; the worm wheel 1-3 is fixed by a set screw and The flat key fixed sleeve is mounted on the right end shaft of the worm 1-2; the inner hole sleeve of the front worm gear bearing 1-4 is mounted on the upper end shaft of the front worm gear bracket of the mechanism base 1-1 and is axially positioned through the shaft shoulder, and the inner hole sleeve of the rear worm gear bearing 1-5 is mounted on the upper end shaft of the rear worm gear bracket of the mechanism base 1-1 and is axially positioned through the shaft shoulder; the inner hole sleeve of the front worm gear 1-6 is mounted on the outer ring of the front worm gear bearing 1-4 and is axially positioned through the shaft shoulder, and is installed so that the front worm gear 1-6 is in meshing state with the worm 1-2, the inner hole sleeve of the rear worm gear 1-7 is mounted on the outer ring of the rear worm gear bearing 1-5 and is axially positioned through the shaft shoulder, and is installed so that the rear worm gear 1-7 is in meshing state with the worm 1-2; the front worm gear cover plate 1-8 is fixedly connected to the upper end face of the front worm gear 1-6 by screws, and the rear worm gear cover plate 1-9 is fixedly connected to the upper end face of the rear worm gear 1-7 by screws.

[0007] The front polarizer 3 is installed in the installation groove of the center hole of the front polarizer mounting frame 2 and is tightly fixed by pressing the pressing block. The rear polarizer 5 is installed in the installation groove of the center hole of the rear polarizer mounting frame 4 and is tightly fixed by pressing the pressing block. The lower end surface of the front polarizer mounting frame 2 is fixedly connected to the upper end surface of the front worm gear cover plate 1-8 of the worm gear reverse motion mechanism 1 by screws, and the lower end surface of the rear polarizer mounting frame 4 is fixedly connected to the upper end surface of the rear worm gear cover plate 1-9 of the worm gear reverse motion mechanism 1 by screws; the worm gear reverse motion mechanism 1 The lower disc structure of the mechanism base 1-1 is fixedly connected to the rotating shaft on the upper part of the one-dimensional turntable 6 by screws; the aluminum profile support frame 7 is a square structure made of aluminum profiles, and the upper part is a mounting plate. The one-dimensional turntable 6 is fixedly mounted on the upper end surface of the mounting plate of the aluminum profile support frame 7 by screws; a leveling foot is installed on each of the four corners of the horizontal adjustment movable substrate 8, and a universal wheel is installed on each of the four sides of the bottom of the horizontal adjustment movable substrate 8. The lower end surface of the aluminum profile support frame 7 is fixedly connected to the upper end surface of the horizontal adjustment movable substrate 8 by screws.

[0008] The infrared polarization imager test device based on the worm gear mechanism is moved to the test position, a level is placed on the upper end surface of the horizontal adjustment movable substrate 8, and the infrared polarization imager test device based on the worm gear mechanism is adjusted to a horizontal position by adjusting the leveling legs at the four corners of the horizontal adjustment movable substrate 8; the worm wheel 1-3 of the worm gear reverse motion mechanism 1 is rotated, and the front worm wheel 1-6 of the worm gear reverse motion mechanism 1 is meshed with the worm 1-2 and the rear worm wheel 1-7 is meshed with the worm 1-2 to drive the front polarizer 3 and the rear polarizer 3 to drive ... The polarizer 5 rotates synchronously in opposite directions relative to each other, and at the same time, the one-dimensional turntable 6 is started to drive the front polarizer 3 and the rear polarizer 5 to rotate in the same direction at the same time. The performance test of the infrared polarization imager can be carried out under different motion states of the front polarizer 3 and the rear polarizer 5; the output shaft of the one-dimensional turntable 6, the worm gear mechanism composed of the front worm wheel 1-6 and the worm 1-2, and the worm gear mechanism composed of the rear worm wheel 1-7 and the worm 1-2 have a self-locking function, thereby realizing the self-locking of the infrared polarization imager test device based on the worm gear mechanism.

[0009] The invention has the following advantages: the invention has a reasonable, simple, compact structure, high reliability, easy manufacturing, and simple installation. The invention adopts a worm-wheel mechanism transmission in which a worm drives two worm wheels so that the two test polarizers can be completely synchronously rotated in opposite directions relative to each other. The invention adopts a one-dimensional turntable mechanism so that the two test polarizers can be rotated in the same direction at the same time, and the mechanism can be self-locked in a vibration environment. The invention adopts a universal wheel for easy movement, and the leveling support foot is adjusted so that the test device can be adjusted to a level, thereby realizing high-precision performance testing of an infrared polarization imager. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] Figure 1 It is a schematic diagram of the overall structure of an embodiment of the present invention.

[0011] Figure 2 It is a schematic structural diagram of a worm gear reverse motion mechanism according to an embodiment of the present invention.

[0012] Figure 3 yes Figure 2 Front view of.

[0013] Figure 4 yes Figure 3 Cross-sectional view at KK in the figure.

[0014] Figure 5 It is a structural schematic diagram of a mechanism base of an embodiment of the present invention. DETAILED DESCRIPTION

[0015] A preferred embodiment of the present invention is given below in conjunction with the accompanying drawings, mainly to further explain the features of the present invention in detail, but not to limit the scope of the present invention:

[0016] See also Figure 1 The infrared polarization imager test device based on the worm gear mechanism includes a worm gear reverse motion mechanism 1, a front polarizer mounting frame 2, a front polarizer 3, a rear polarizer mounting frame 4, a rear polarizer 5, a one-dimensional turntable 6, an aluminum profile support frame 7, and a horizontal adjustment movable substrate 8; the characteristics are:

[0017] See also Figures 2 to 5The worm gear reverse motion mechanism 1 comprises a mechanism base 1-1, a worm 1-2, a worm wheel 1-3, a front worm wheel bearing 1-4, a rear worm wheel bearing 1-5, a front worm wheel 1-6, a rear worm wheel 1-7, a front worm wheel cover plate 1-8, and a rear worm wheel cover plate 1-9; the characteristics are as follows: the lower part of the mechanism base 1-1 is a disc structure, the upper front side is a front worm wheel bracket, the upper rear side is a rear worm wheel bracket, the upper left side is a left bearing seat, and the upper right side is a right bearing seat; the left side of the mechanism base 1-1 The center holes of the right bearing seat of the bearing seat and the mechanism base 1-1 are both equipped with deep groove ball bearings. The deep groove ball bearings are deep groove ball bearings 6001-2RZ produced by China Harbin Bearing Group Co., Ltd. The left end shaft sleeve of the worm 1-2 is installed in the inner ring of the deep groove ball bearing of the left bearing seat of the mechanism base 1-1, and the right end shaft sleeve of the worm 1-2 is installed in the inner ring of the deep groove ball bearing of the right bearing seat of the mechanism base 1-1. The worm 1-2 is axially positioned by the shaft shoulder; the worm wheel 1-3 is The set screw and flat key fixing sleeve are installed on the right end shaft of the worm 1-2; the front worm wheel bearing 1-4 and the rear worm wheel bearing 1-5 both adopt the deep groove ball bearing 6001-2RZ of China Harbin Bearing Group Co., Ltd., the inner hole sliding sleeve of the front worm wheel bearing 1-4 is installed on the upper end shaft of the front worm wheel bracket of the mechanism base 1-1 and is axially positioned through the shaft shoulder, and the inner hole sliding sleeve of the rear worm wheel bearing 1-5 is installed on the upper end shaft of the rear worm wheel bracket of the mechanism base 1-1 and is axially positioned through the shaft shoulder; the front worm wheel The 1-6 inner hole sleeve is installed on the outer ring of the front worm gear bearing 1-4 and is axially positioned by the shaft shoulder, and is installed so that the front worm gear 1-6 is meshed with the worm 1-2. The rear worm gear 1-7 inner hole sleeve is installed on the outer ring of the rear worm gear bearing 1-5 and is axially positioned by the shaft shoulder, and is installed so that the rear worm gear 1-7 is meshed with the worm 1-2; the front worm gear cover plate 1-8 is fixedly connected to the upper end face of the front worm gear 1-6 by screws, and the rear worm gear cover plate 1-9 is fixedly connected to the upper end face of the rear worm gear 1-7 by screws.

[0018] The front polarizer 3 and the rear polarizer 5 are both test polarizers developed by Shanghai Langdan Technology Group Co., Ltd., China. The front polarizer 3 is installed in the installation groove of the center hole of the front polarizer mounting frame 2 and is tightly fixed by pressing the pressing block. The rear polarizer 5 is installed in the installation groove of the center hole of the rear polarizer mounting frame 4 and is tightly fixed by pressing the pressing block. The lower end surface of the front polarizer mounting frame 2 is fixedly connected to the upper end surface of the front worm gear cover plate 1-8 of the worm gear reverse motion mechanism 1 by screws, and the lower end surface of the rear polarizer mounting frame 4 is fixedly connected to the upper end surface of the rear worm gear cover plate 1-9 of the worm gear reverse motion mechanism 1 by screws; the one-dimensional turntable 6 adopts R1R150H-O-180 of Shanghai Lianyi Fiber Laser Equipment Co., Ltd., China, and the mechanism base 1- 1 is fixedly connected to the rotating shaft at the top of the one-dimensional turntable 6 by screws; the aluminum profile support frame 7 is a square structure formed by splicing 40 series aluminum profiles of Shanghai Aohong Metal Products Co., Ltd., China, and the upper part is a mounting plate, and the one-dimensional turntable 6 is fixedly mounted on the upper end surface of the upper mounting plate of the aluminum profile support frame 7 by screws; a leveling support foot is installed on each of the four corners of the horizontal adjustment movable base plate 8, and the leveling support foot adopts 028.ntm12.50.60d of Shanghai Aohong Metal Products Co., Ltd., China, and a universal wheel is installed on each of the four sides of the bottom of the horizontal adjustment movable base plate 8, and the universal wheel adopts CNGS550-R of Japan MISUMI Company, and the lower end surface of the aluminum profile support frame 7 is fixedly connected to the upper end surface of the horizontal adjustment movable base plate 8 by screws.

[0019] The action flow of the embodiment is as follows: the infrared polarization imager test device based on the worm gear mechanism is moved to the test position, a level is placed on the upper end surface of the horizontal adjustment movable substrate 8, and the infrared polarization imager test device based on the worm gear mechanism is adjusted to a horizontal position by adjusting the leveling feet at the four corners of the horizontal adjustment movable substrate 8; the worm wheel 1-3 of the worm gear reverse motion mechanism 1 is rotated, and the front worm wheel 1-6 of the worm gear reverse motion mechanism 1 is meshed with the worm 1-2 for transmission, and the rear worm wheel 1-7 is meshed with the worm 1-2 for transmission. , drive the front polarizer 3 and the rear polarizer 5 to rotate synchronously in opposite directions relative to each other, and at the same time start the one-dimensional turntable 6 to drive the front polarizer 3 and the rear polarizer 5 to rotate simultaneously in the same direction. The performance test of the infrared polarization imager can be carried out under different motion states of the front polarizer 3 and the rear polarizer 5; the output shaft of the one-dimensional turntable 6, the worm gear mechanism composed of the front worm wheel 1-6 and the worm 1-2, and the worm gear mechanism composed of the rear worm wheel 1-7 and the worm 1-2 have a self-locking function, thereby realizing the self-locking of the infrared polarization imager test device based on the worm gear mechanism.

Claims

1. An infrared polarization imager test device based on a worm gear mechanism, comprising a worm gear reverse motion mechanism (1), a front polarizer mounting frame (2), a front polarizer (3), a rear polarizer mounting frame (4), a rear polarizer (5), a one-dimensional turntable (6), an aluminum profile support frame (7), and a horizontal adjustment movable substrate (8); characterized in that: The worm gear reverse motion mechanism (1) comprises a mechanism base (1-1), a worm (1-2), a worm wheel (1-3), a front worm wheel bearing (1-4), a rear worm wheel bearing (1-5), a front worm wheel (1-6), a rear worm wheel (1-7), a front worm wheel cover plate (1-8), and a rear worm wheel cover plate (1-9); the characteristic is that: the lower part of the mechanism base (1-1) is a disc structure, the upper front side is a front worm wheel bracket, the upper rear side is a rear worm wheel bracket, the upper left side is a left bearing seat, and the upper right side is a right bearing seat; The left bearing seat of the mechanism base (1-1) and the center holes of the right bearing seat of the mechanism base (1-1) are both provided with deep groove ball bearings. The left end shaft sleeve of the worm (1-2) is installed in the inner ring of the deep groove ball bearing of the left bearing seat of the mechanism base (1-1). The right end shaft sleeve of the worm (1-2) is installed in the inner ring of the deep groove ball bearing of the right bearing seat of the mechanism base (1-1). The worm (1-2) is axially positioned by a shaft shoulder. The worm wheel (1-3) is fixed by a set screw. The screw and flat key fixing sleeve are mounted on the right end shaft of the worm (1-2); the inner hole sliding sleeve of the front worm gear bearing (1-4) is mounted on the upper end shaft of the front worm gear bracket of the mechanism base (1-1) and is axially positioned through the shaft shoulder; the inner hole sliding sleeve of the rear worm gear bearing (1-5) is mounted on the upper end shaft of the rear worm gear bracket of the mechanism base (1-1) and is axially positioned through the shaft shoulder; the inner hole sliding sleeve of the front worm gear (1-6) is mounted on the outer ring of the front worm gear bearing (1-4) and is axially positioned through the shaft shoulder, and the installation The front worm wheel (1-6) is in meshing state with the worm (1-2); the inner hole sleeve of the rear worm wheel (1-7) is installed on the outer ring of the rear worm wheel bearing (1-5) and is axially positioned through the shaft shoulder, so that the rear worm wheel (1-7) and the worm (1-2) are in meshing state; the front worm wheel cover plate (1-8) is fixedly connected to the upper end surface of the front worm wheel (1-6) through screws, and the rear worm wheel cover plate (1-9) is fixedly connected to the upper end surface of the rear worm wheel (1-7) through screws; The front polarizer (3) is mounted in the mounting groove of the center hole of the front polarizer mounting frame (2) and is fixedly secured by a pressing block, the rear polarizer (5) is mounted in the mounting groove of the center hole of the rear polarizer mounting frame (4) and is fixedly secured by a pressing block, the lower end surface of the front polarizer mounting frame (2) is fixedly connected to the upper end surface of the front worm gear cover plate (1-8) of the worm gear reverse motion mechanism (1) by screws, and the lower end surface of the rear polarizer mounting frame (4) is fixedly connected to the upper end surface of the rear worm gear cover plate (1-9) of the worm gear reverse motion mechanism (1) by screws; the worm gear reverse motion mechanism (1 ) is fixedly connected to the rotating shaft at the top of the one-dimensional turntable (6) by screws; the aluminum profile support frame (7) is a square structure made of aluminum profiles, the top of which is a mounting plate, and the one-dimensional turntable (6) is fixedly mounted on the upper mounting plate surface of the aluminum profile support frame (7) by screws; a leveling foot is installed on each of the four corners of the horizontal adjustment movable base plate (8), and a universal wheel is installed on each of the four sides of the bottom of the horizontal adjustment movable base plate (8); the lower end surface of the aluminum profile support frame (7) is fixedly connected to the upper end surface of the horizontal adjustment movable base plate (8) by screws.

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