Single-point support device for an optical reflection unit

Abstract

The application relates to the technical field of optical mechanical structures, and particularly provides a single-point supporting device of an optical reflection unit. The device comprises a screw rod, a plane bearing, a locking nut, a self-aligning bearing, a rubber sleeve and a base. The base is a groove structure with a hollow bottom, and the self-aligning bearing is installed at the bottom of the groove of the base. The upper edge of the base is used for bonding with a supported surface. One plane bearing is arranged on the upper and lower surfaces of the self-aligning bearing respectively, the plane bearing is used for ensuring the translational freedom of the device and releasing the temperature stress of the device, the rubber sleeve is sleeved on the screw rod, the screw rod penetrates through the plane bearing and the self-aligning bearing, and the rubber sleeve is used for ensuring the centering of the plane bearing during assembly. The locking nut is arranged at the lower end of the device and is in threaded connection with the screw rod, and the screw rod is axially fixed by rotating the locking nut to the plane bearing. The device has the advantages that the centering can be adjusted independently during assembly, and the device can realize slight translation and release of temperature stress after assembly.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of optical machine structure, and particularly relates to a single-point supporting device of an optical reflection unit. BACKGROUND

[0002] Large optical reflection arrays, radar radiation arrays and the like are usually spliced by a plurality of unit modules during processing and assembly, and the overall array usually has certain surface type precision requirements. Therefore, the supporting structure of the unit module needs to have the adjustment capability of small-range angle or position.

[0003] The space mirror and its supporting structure in the prior art usually design the height and thickness of the supporting rib on the back of the mirror according to the overall consistency, which reduces the overall design difficulty of the mirror. In combination with the process limitation of the mirror, the design can meet the requirements in the design of small and medium-sized mirrors, but the design method has its own design defects in the design of large reflection arrays. The back supporting structure of the mirror not only bears the mirror surface, but also supports the overall stress and force transmission of the mirror. The force transmission is mainly determined by the rib thickness and rib height after the lightening of the mirror. The supporting rib in the local non-important area of the mirror also exists due to the overall design. The mirror supporting rib in this position not only increases the overall quality of the mirror, but also increases the mirror surface deformation when the mirror is subjected to gravity and temperature change. Therefore, the mirror surface shape precision is poor. This situation is particularly obvious in the development process of large reflection arrays.

[0004] The application scene of the large array structure is usually outdoor, and outdoor has a certain temperature change range. The array and the supporting structure are not made of the same material, so a certain temperature stress and deformation will be generated in the unit module of the array, which will affect the working precision.

[0005] A mirror flexible supporting structure applied to back single-point supporting is disclosed in Chinese patent CN218675454U. The structure can solve the problem of mirror deformation caused by gravity, eliminate the stress caused by deformation, and ensure the mirror surface type precision. However, the fixing and adjustment need to be back and forth during assembly and adjustment, and the assembly is relatively complex. In addition, the traditional scheme has a supporting device in the form of a foot cup structure, which has angle adjustment capability but does not have temperature stress release capability, and generally has a large size and is used to support heavy load structures. At the same time, the structure does not have the translational freedom in the supported surface. If the supporting structure has the adjustment capability of angle and position, and the translational freedom in the supported surface is small, the stress and deformation caused by temperature change can be eliminated. Therefore, developing a mirror supporting structure with angle adjustment and temperature stress release functions is very beneficial to improving the working precision of large optical reflection arrays. SUMMARY

[0006] The present application provides a single-point supporting device for optical reflection units to solve the above problems.

[0007] The present application provides a single-point supporting device for optical reflection units to solve the above problems.

[0008] The bottom of the base is hollowed out, and the self-aligning bearing is installed at the bottom of the groove of the base; the upper edge of the base is used to bond with the supported surface.

[0009] The upper and lower surfaces of the self-aligning bearing are respectively provided with one of the plane bearings, and the plane bearings are used to ensure the translational freedom of the device and release the temperature stress of the device.

[0010] The rubber sleeve is sleeved on the screw rod, the screw rod passes through the plane bearing and the self-aligning bearing, and the rubber sleeve is used to ensure the centering of the plane bearing during assembly.

[0011] The locking nut is arranged at the lower end of the device and is threadedly connected with the screw rod, and the screw rod is axially fixed by rotating the locking nut towards the plane bearing.

[0012] Preferably, the plane bearing comprises rolling elements, a gasket and a retainer, and the rolling elements are embedded in the retainer and placed on the gasket; the gasket faces the self-aligning bearing.

[0013] Preferably, a gasket is arranged between the locking nut and the plane bearing, and the plane bearing is pressed on the self-aligning bearing by the locking nut.

[0014] Preferably, the upper edge of the base is provided with a fitting surface, and the contact area of the fitting surface with the supported surface is greater than the cross-sectional area of the sidewall of the base, so that the base is more firmly bonded with the supported surface.

[0015] Preferably, a plurality of grooves are arranged on the fitting surface, and the grooves are used to increase the friction between the fitting surface and the supported surface.

[0016] Preferably, the device further comprises a gasket set arranged below the locking nut, and the gasket set comprises a corrugated gasket; when the lower end of the screw rod is connected to the support frame below, the compression amount between the components is adjusted in a small range by adjusting the position of the nut to compress or relax the corrugated gasket.

[0017] Preferably, the gasket set forms a "sandwich" structure with two flat gaskets and the corrugated gasket.

[0018] The second object of the present application is a support structure of high-precision reflecting units, which pastes no less than three single-point support devices of the optical reflecting units on the back of the high-precision reflecting units, so that the support structure forms a multi-point support to realize the surface type adjustment of the supported surface.

[0019] Compared with the prior art, the present application can achieve the following beneficial effects:

[0020] (1) The single-point support device of each optical reflecting unit has independent alignment and support normal position adjustment functions during assembly;

[0021] (2) After assembly, the device has a small translational degree of freedom in the direction parallel to the optical reflecting array during use, which can release the temperature stress. BRIEF DESCRIPTION OF DRAWINGS

[0022] Figure 1 is a cross-sectional view of a single-point support device of an optical reflecting unit according to an embodiment of the present application.

[0023] Figure 2 is a cross-sectional view of a single-point support device of an optical reflecting unit according to an embodiment of the present application.

[0024] REFERENCE NUMERALS:

[0025] 1, screw rod; 2, rolling body; 3, gasket; 4, retainer; 5, locking nut; 6, aligning bearing; 7, rubber sleeve; 8, base; 9, flat gasket; 10, corrugated gasket; 11, support frame; 801, bonding surface; 802, groove. DETAILED DESCRIPTION

[0026] Hereinafter, embodiments of the present application will be described with reference to the accompanying drawings. In the following description, the same modules are denoted by the same reference numerals. In the case of the same reference numerals, their names and functions are also the same. Therefore, detailed descriptions thereof will not be repeated.

[0027] In order to make the objects, technical solutions, and advantages of the present application clearer, further detailed descriptions will be given below in combination with the accompanying drawings and specific embodiments. It should be understood that the specific embodiments described herein are only used to explain the present application and do not constitute a limitation on the present application.

[0028] A single-point support device of an optical reflecting unit includes a screw rod, a flat bearing, a locking nut, an aligning bearing, a rubber sleeve, and a base. The flat bearing includes rolling bodies, a gasket 3, and a retainer, and the rolling bodies are embedded in the retainer and placed on the gasket 3.

[0029] The base is a groove structure with a hollow bottom, and the aligning bearing is installed at the bottom of the groove of the base.

[0030] A planar bearing is arranged on the upper and lower surfaces of the self-aligning bearing respectively; the washer of the planar bearing faces the self-aligning bearing, so as to ensure translational freedom and release temperature stress;

[0031] The screw rod passes through the planar bearing and the self-aligning bearing, and a rubber sleeve is arranged between the screw rod and the planar bearing and the self-aligning bearing, so as to ensure the centering of the planar bearing during assembly;

[0032] The locking nut is threadedly connected with the screw rod, a washer is arranged between the locking nut and the planar bearing, the planar bearing is pressed on the self-aligning bearing by the locking nut, so that the screw rod as a whole cannot axially move and can have a small amount of movement in the direction parallel to the supported surface;

[0033] The base is provided with an abutting surface on the side close to the supported surface, and a plurality of grooves are arranged on the abutting surface, so as to increase the friction between the abutting surface and the supported surface; the abutting surface abuts against the supported surface, so as to be integrally formed with the supported surface.

[0034] Embodiment 1

[0035] As Figure 1 A single-point supporting device of an optical reflection unit is shown, which comprises a screw rod 1, a planar bearing, a locking nut 5, a self-aligning bearing 6, a rubber sleeve 7 and a base 8; the planar bearing comprises rolling elements 2, a washer 3 and a retainer 4, a plurality of rolling elements 2 are embedded in the retainer 4 and placed on the washer 3, and the washer 3 is used to ensure that the rolling elements 2 are in full contact with the retainer 4;

[0036] The base 8 is a groove structure with a hollow bottom, and the self-aligning bearing 6 is installed at the bottom of the groove of the base 8;

[0037] A planar bearing is arranged on the upper and lower surfaces of the self-aligning bearing 6 respectively; the washer 3 of the planar bearing faces the self-aligning bearing 6, so as to ensure translational freedom and release temperature stress;

[0038] The screw rod 1 passes through the planar bearing and the self-aligning bearing 6, and a rubber sleeve 7 is arranged between the screw rod 1 and the planar bearing and the self-aligning bearing 6, so as to ensure the centering of the planar bearing during assembly;

[0039] The locking nut 5 is threadedly connected with the screw rod 1, a washer 3 is arranged between the locking nut 5 and the planar bearing, the planar bearing is pressed on the self-aligning bearing 6 by the locking nut 5 and the wear between components is reduced, so that the screw rod 1 as a whole cannot axially move and can have a small amount of movement in the direction parallel to the supported surface;

[0040] The base is provided with a close surface 801 close to the side of the supported surface, and a plurality of grooves 802 are arranged on the close surface 801, which are used to increase the friction between the close surface 801 and the supported surface; the close surface 801 abuts against the supported surface, and is used to be bonded with the supported surface.

[0041] When installing, the supporting device of the optical reflecting unit in the embodiment should adopt at least three supporting points to support the thin-wall structure (reflecting surface) of the unit module plane or curved surface with precision requirement; each supporting device has independent centering and normal position adjusting functions when assembling; after assembling, the supporting device has a small translational freedom in the direction parallel to the reflecting surface, and can release the temperature stress.

[0042] The lower end of the screw rod 1 is connected with the supporting frame 11 by a nut, and a gasket set is arranged between the locking nut 5 and the supporting frame 11, the gasket set is formed as a “sandwich” structure by two flat gaskets 9 and a corrugated gasket 10, and the compression amount of the corrugated gasket 10 is adjusted in a small range by extruding or relaxing the corrugated gasket 10. Figure 2 )。

[0043] Embodiment 2

[0044] A supporting structure of a high-precision reflecting unit, comprising the single-point supporting device of the optical reflecting unit and the supporting frame in the embodiment 1; when installing, the bases 8 of the three single-point supporting devices of the optical reflecting units are pasted on the back surface of the high-precision reflecting unit, so that the supporting structure is formed as a three-point supporting structure to realize the stability of the whole structure.

[0045] The lower end of the screw rod 1 of the single-point supporting device of the optical reflecting unit is connected with the supporting frame 11 below by a nut, and a whole supporting structure is formed (as shown in Figure 2 ).

[0046] It should be understood that the various forms of flow shown above can be used to reorder, add or delete steps. For example, the steps described in the present disclosure can be executed in parallel, sequentially or in different orders, as long as the desired results of the technical solutions of the present disclosure can be achieved, which is not limited herein.

[0047] The above detailed description does not constitute a limitation on the protection scope of the present application. Those skilled in the art should understand that various modifications, combinations, sub-combinations and substitutions can be made according to design requirements and other factors. Any modification, equivalent replacement and improvement within the spirit and principles of the present application should be included in the protection scope of the present application.

Claims

1. A single-point supporting device for an optical reflection unit, characterized by: The screw rod, the plane bearing, the locking nut, the aligning bearing, the rubber sleeve and the base are included. The base is a groove structure with a hollow bottom, and the aligning bearing is installed at the bottom of the groove of the base. The plane bearing is arranged on the upper and lower surfaces of the aligning bearing, and is used for ensuring the translational freedom of the device and releasing the temperature stress of the device. The rubber sleeve is sleeved on the screw rod, and the screw rod passes through the plane bearing and the aligning bearing. The locking nut is arranged at the lower end of the device, and is threadedly connected with the screw rod.

2. A single point support device for an optical reflecting unit according to claim 1, characterized in that: The plane bearing includes rolling elements, a washer and a retainer, and the rolling elements are embedded in the retainer and placed on the washer.

3. A single point support device for an optical reflecting unit according to claim 2, wherein: A washer is arranged between the locking nut and the plane bearing, and the plane bearing is pressed on the aligning bearing by the locking nut.

4. A single point support device for an optical reflecting unit according to claim 3, wherein: The upper edge of the base is provided with a contact surface, and the contact area of the contact surface with the supported surface is greater than the cross-sectional area of the sidewall of the base, so that the base is more firmly attached to the supported surface.

5. A single point support device for an optical reflecting unit according to claim 4, wherein: The contact surface is provided with a plurality of grooves, and the grooves are used for increasing the friction between the contact surface and the supported surface.

6. A single point support device for an optical reflecting unit according to any one of claims 1 to 5, characterized in that: The device further includes a gasket set arranged below the locking nut, and the gasket set includes a corrugated gasket.

7. A single point support device for an optical reflecting unit according to claim 6, wherein: When the lower end of the screw rod is connected to the support frame below, the compression amount between the components is adjusted by adjusting the position of the nut to compress or relax the corrugated gasket.

8. A support structure for high precision reflecting units, characterized by: The gasket set forms a sandwich structure with two flat gaskets and the corrugated gasket. The base of the single-point supporting device of the optical reflection unit is attached to the back of the high-precision reflection unit, and the supporting structure forms a multi-point support to adjust the surface type of the supported surface. The base of the single-point supporting device of the optical reflection unit is attached to the back of the high-precision reflection unit, and the supporting structure forms a multi-point support to adjust the surface type of the supported surface.

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