Stress-free supporting and unloading device for ground adjustment of reflecting surface

Abstract

The invention provides an unstressed supporting and unloading device for ground adjustment of a reflecting surface. The unstressed supporting and unloading device comprises movable trundles, a bottom frame, an adapter plate and an adjustable supporting assembly. The plurality of adapter plates are mounted on the underframe; the adjustable supporting assembly is fixedly connected with the adapter plate, and the top end of the adjustable supporting assembly is used for being connected with an external reflecting surface. The adjustable supporting assembly comprises a rigid supporting bracket, a spherical hinge joint, an upper sleeve, a lower sleeve, a fixed support and a height adjusting structure. The height adjusting structure comprises an upper fixing nut, an upper locking nut, an adjustable supporting screw rod, a lower locking nut, a lower fixing nut, a height adjusting handle and a locking handle; a height adjusting handle is mounted on the adjustable supporting screw rod; locking handles are mounted on the upper locking nut and the lower locking nut; one set of device can penetrate through the reflecting surface assembling technological process, parking, loading, transporting and adjusting of the reflecting surface are met, one-stop assembling is achieved, and the assembling efficiency is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of ground splicing, adjustment and final assembly of large-caliber space reflection surfaces, and specifically to a stress-free support and unloading device for ground adjustment of reflection surfaces, and in particular to a stress-free support and unloading device for ground adjustment of large-size reflection surfaces, and in particular to a stress-free support and unloading device. Background Art

[0002] With the development of space optical technology, the requirements for resolution are increasing, and large-aperture space reflector antennas are needed. The increase in aperture will bring a series of technical problems. Large-aperture reflector antennas are usually lightweight in design and assembled with multiple petals. Their on-orbit working environment is a microgravity environment. In order to ensure that the accuracy after gravity release after entering orbit can meet the requirements, they need to be assembled and tested in a ground gravity environment. During the ground assembly process, the influence of fixed stress and self-gravity on the reflector surface shape should be avoided.

[0003] Therefore, how to design a stress-free fixing method and a reasonable support and unloading structure during the processes of parking, transportation, and adjustment on the reflective surface has become a technical problem that needs to be solved urgently. Summary of the invention

[0004] In view of the defects in the prior art, the object of the present invention is to provide a stress-free support and unloading device for adjusting the ground of a reflective surface.

[0005] According to the present invention, a stress-free support and unloading device for adjusting the reflective surface ground is provided, comprising movable casters, a base frame, an adapter plate and an adjustable support assembly;

[0006] The movable casters are mounted on the bottom of the chassis;

[0007] A plurality of adapter plates are all mounted on the base frame; the adjustable support assembly is fixedly connected to the adapter plate, and the top end of the adjustable support assembly is used to connect to an external reflective surface.

[0008] Preferably, a first waist-shaped hole is formed on the adapter plate, and a second waist-shaped hole is provided on the base frame, and the first waist-shaped hole and the second waist-shaped hole are perpendicular to each other and match each other.

[0009] Preferably, the adjustable support assembly includes a rigid support bracket, a ball joint, an upper sleeve, a lower sleeve, a fixed support and a height adjustment structure;

[0010] The lower sleeve is installed on the fixed support, and the height adjustment structure is installed between the upper sleeve and the lower sleeve;

[0011] The rigid support bracket is installed on the upper sleeve through a ball joint; the rigid support bracket supports the reflecting surface.

[0012] Preferably, the height adjustment structure comprises an upper fixing nut, an upper locking nut, an adjustable support screw, a lower locking nut, a lower fixing nut, a height adjustment handle and a locking handle; the height adjustment handle is installed on the adjustable support screw, and the upper locking nut and the lower locking nut are both installed with locking handles;

[0013] The upper fixing nut is partially embedded in the upper sleeve and connected to the upper sleeve, and the lower fixing nut is partially embedded in the lower sleeve and connected to the lower sleeve; the adjustable support screw is respectively matched with the upper fixing nut and the lower fixing nut thread;

[0014] The upper locking nut and the lower locking nut are threadedly connected to the upper screw and the lower screw of the adjustable support screw respectively. When the upper locking nut and the lower locking nut are respectively against the upper fixing nut and the lower fixing nut, the upper locking nut locks the upper screw of the adjustable support screw, and the lower locking nut locks the lower screw of the adjustable support screw.

[0015] Preferably, the inner thread of the lower fixing nut is a right-handed thread, the inner thread of the upper fixing nut is a left-handed thread, the upper screw of the adjustable support screw is a left-handed thread that cooperates with the upper fixing nut, and the lower screw of the adjustable support screw is a right-handed thread that cooperates with the lower fixing nut.

[0016] Preferably, the support surface of the rigid support bracket is hollowed out, a boss structure is arranged on the support surface, the boss structure contacts the back of the reflective surface, and a flow channel is arranged on the boss structure; after the rigid support bracket supports the reflective surface, silicone rubber is coated along the circumference of the support, and part of the silicone rubber flows into the hollow part of the rigid support bracket through the flow channel. Preferably, the adapter plate is an aluminum plate.

[0017] Preferably, the number of adapter plates is ≥3.

[0018] Preferably, the base frame is a profile welding structure, and the slot aluminum on both sides of the upper end surface of the base frame are respectively provided with the second waist-shaped holes in array.

[0019] Preferably, the movable casters are fixedly mounted on the four corners of the bottom surface of the base frame.

[0020] Compared with the prior art, the present invention has the following beneficial effects:

[0021] 1. A set of devices of the present invention can run through the reflective surface assembly process, meet the requirements of reflective surface parking, shipping, and adjustment, realize one-stop assembly, and improve assembly efficiency.

[0022] 2 The present invention can realize stress-free support unloading of the reflective surface, control gravity deformation through multi-point support unloading, ensure the surface accuracy of the reflective surface, and simulate the microgravity environment.

[0023] 3. The present invention is designed with multiple adjustable support components, and the height of each adjustable support component is adjustable, which can achieve precise adjustment of the support height and facilitate the control of the surface shape. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Other features, objects and advantages of the present invention will become more apparent from the detailed description of non-limiting embodiments made with reference to the following drawings:

[0025] Figure 1 This is a schematic diagram of the structure of the present invention when a reflective surface is installed;

[0026] Figure 2 It is a structural schematic diagram of the present invention;

[0027] Figure 3 Schematic diagram of the structure of the bottom frame from a top view;

[0028] Figure 4 It is a structural schematic diagram of a single adapter board;

[0029] Figure 5 is a schematic diagram of the structure of an adjustable support assembly;

[0030] Figure 6 for Figure 5 A partial cross-sectional view of

[0031] The figure shows:

[0032] DETAILED DESCRIPTION

[0033] The present invention is described in detail below in conjunction with specific embodiments. The following embodiments will help those skilled in the art to further understand the present invention, but are not intended to limit the present invention in any form. It should be noted that, for those of ordinary skill in the art, several changes and improvements can also be made without departing from the concept of the present invention. These all belong to the protection scope of the present invention.

[0034] The present invention provides a stress-free support and unloading device for adjusting the reflective surface ground, such as Figure 1-Figure 5As shown, it includes a movable caster 1, a base frame 2, an adapter plate 3 and an adjustable support assembly 4; the movable caster 1 is installed at the bottom of the base frame 2, specifically, the movable caster is fixedly installed at the four corners of the bottom surface of the base frame. There are multiple adapter plates 3, specifically, the number is ≥3, and there are gaps for adjustment margins between different adapter plates. Multiple adapter plates 3 are all installed on the upper surface of the base frame 2; the adjustable support assembly 4 is fixedly connected to the adapter plate 3, and the number of adjustable support assemblies 4 is consistent with that of the adapter plates 3. Multiple adjustable support assemblies 4 are staggered, and their number and initial position are determined by the simulation analysis of the gravity deformation control of the reflective surface to ensure the reflective surface shape and control the influence of gravity deformation. The top of the adjustable support assembly 4 is used to connect to the external reflective surface 5. The height of the adjustable support assembly 4 is adjustable, and the support height of the adjustable support assembly can be adjusted by the theoretical model and the measured surface shape accuracy. Specifically, in the initial splicing posture of the reflective surface, the height of each group of adjustable support components 4 is determined according to the theoretical model, and the height difference of each group of fixed supports 410 is consistent with the height difference of each group of adjustable support components 4 to ensure that the height adjustment amount of the adjustable support components remains consistent.

[0035] The adapter plate 3 is provided with a first waist-shaped hole 301, and the base frame 2 is provided with a second waist-shaped hole 201, wherein the first waist-shaped hole 301 and the second waist-shaped hole 201 are perpendicular to each other and match each other. By designing the waist-shaped holes perpendicular to each other, the adapter plate 3 and the base frame 2 can be moved and adjusted in the horizontal plane in the horizontal and vertical directions when installed, thereby realizing the position adjustment of the adjustable support assembly 4.

[0036] The adjustable support assembly 4 includes a rigid support bracket 401, a high-precision ball joint 402, an upper sleeve 403, a lower sleeve 409, a fixed support 410 and a height adjustment structure; the lower sleeve 409 is installed on the fixed support 410 by screw connection, and the height adjustment structure is installed between the upper sleeve 403 and the lower sleeve 409; the rigid support bracket 401 is installed on the upper sleeve 403 by a ball joint 402, specifically, the high-precision ball joint 402 is screwed on the upper part of the upper sleeve 403; the rigid support bracket 401 is connected and fixed to the ball joint 402. The rigid support bracket 401 supports the reflecting surface 5.

[0037] The height adjustment structure includes an upper fixing nut 404, an upper locking nut 405, an adjustable support screw 406, a lower locking nut 407, a lower fixing nut 408, a height adjustment handle 4111 and a locking handle 4112; the height adjustment handle 4111 is installed on the adjustable support screw 406, and the locking handle 4112 is installed on the upper locking nut 405 and the lower locking nut 407;

[0038] The upper fixing nut 404 is partially embedded in the upper sleeve 403 and connected to the upper sleeve 403 by screws, and the lower fixing nut 408 is partially embedded in the lower sleeve 409 and connected to the lower sleeve 409 by screws; the adjustable support screw 406 is threadedly matched with the upper fixing nut 404 and the lower fixing nut 408 respectively;

[0039] The upper locking nut 405 and the lower locking nut 407 are respectively threadedly connected to the upper screw and the lower screw of the adjustable support screw 406. When the upper locking nut 405 and the lower locking nut 407 are respectively abutted against the upper fixing nut 404 and the lower fixing nut 408, the upper locking nut 405 locks the upper screw of the adjustable support screw 406, and the lower locking nut 407 locks the lower screw of the adjustable support screw 406.

[0040] The internal thread of the lower fixing nut 408 is a right-handed thread, the internal thread of the upper fixing nut 404 is a left-handed thread, the upper screw of the adjustable support screw 406 is a left-handed thread that cooperates with the upper fixing nut 404, and the lower screw of the adjustable support screw 406 is a right-handed thread that cooperates with the lower fixing nut 408.

[0041] The height of the adjustable support assembly 4 can be lowered by rotating the adjustable support screw 406 clockwise through the height adjustment handle 4111, and the height of the adjustable support assembly 4 can be raised by rotating the adjustable support screw 406 counterclockwise. After the height is determined, the upper locking nut 405 and the lower locking nut 407 are respectively rotated through the locking handle 4112 to lock the adjustable support screw 406;

[0042] The support surface of the rigid support bracket 401 is hollowed out, and a boss structure is provided on the circumference of the hollowed-out portion of the support surface, the boss structure contacts the back of the reflective surface 5, and a flow channel 4011 is provided on the boss structure; after the rigid support bracket 401 supports the reflective surface 5, silicone rubber is coated along the circumference of the support, and part of the silicone rubber flows into the hollowed-out portion 4012 of the rigid support bracket 401 through the flow channel 4011. The present invention realizes stress-free support and fixation of the reflective surface 5 through the connection between the ball joint 402 and the silicone rubber.

[0043] In a preferred embodiment, the adapter plate 3 is a thicker aluminum plate. The base frame 2 is a welded structure of rectangular aluminum tubes, angle aluminum, channel aluminum and other profiles to form a stable frame. The channel aluminum on both sides of the upper end surface of the base frame 2 are respectively provided with an array of the second waist-shaped holes 201.

[0044] The present invention has a simple structure and low development cost; the present invention has high overall rigidity, and when installed on a posture adjustment mechanism for reflecting surface posture adjustment assembly, it can well control overall deformation and achieve high-precision adjustment; the adjustable support assembly 4 is connected to a hollow rigid support bracket through a ball joint to support the back of the reflecting surface, and combined with the coating of silicone rubber to eliminate the stress caused by the support and connection; the movable adapter plate can realize the adjustment of the support point, and the multi-point distributed precision threaded adjustable support assembly can realize the precise adjustment of the support height, which is convenient for the control of the surface shape; a set of devices of the present invention can run through the reflecting surface assembly process, meet the parking, shipping, and adjustment of the reflecting surface, realize one-stop assembly, and improve assembly efficiency.

[0045] The present invention provides a stress-free support and unloading device for a reflector surface based on the ground assembly process of the reflector antenna, solves the influence of gravity deformation of the ground assembly of the reflector antenna, realizes the simulation of the microgravity environment of the reflector surface, ensures the surface accuracy of the reflector surface, solves the one-stop connection of the reflector antenna assembly process, satisfies the ground parking, transportation, splicing and adjustment of the reflector surface, and improves the assembly efficiency of the reflector antenna.

[0046] The present invention can not only meet the requirements of stress-free support and unloading of the reflective surface, but also facilitate the parking, transportation, splicing and adjustment of the reflective surface. The present invention is used for parking and transportation of large-sized reflective surfaces, and can be installed on the posture adjustment mechanism to adjust the posture of the reflective surface. It can achieve stress-free support and unloading of large-sized, weakly rigid reflective surfaces, control gravity deformation through multi-point support and unloading, ensure the surface accuracy of the reflective surface, simulate the microgravity environment, and the decentralized adjustable support components can effectively avoid the position of the reflective surface back frame to achieve splicing and adjustment of the reflective surface under support and convenient withdrawal.

[0047] In the description of the present application, it should be understood that the terms "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present application.

[0048] The above describes the specific embodiments of the present invention. It should be understood that the present invention is not limited to the above specific embodiments, and those skilled in the art can make various changes or modifications within the scope of the claims, which does not affect the essence of the present invention. In the absence of conflict, the embodiments of the present application and the features in the embodiments can be combined with each other arbitrarily.

Claims

1. A stress-free support and unloading device for reflective surface ground adjustment, characterized in that: It comprises a movable caster (1), a base frame (2), an adapter plate (3) and an adjustable support assembly (4); The movable caster (1) is installed at the bottom of the base frame (2); A plurality of adapter plates (3) are mounted on the base frame (2); an adjustable support assembly (4) is fixedly connected to the adapter plate (3); and the top end of the adjustable support assembly (4) is used to connect to an external reflection surface (5).

2. The stress-free support and unloading device for reflective surface ground adjustment according to claim 1 is characterized in that: A first waist-shaped hole (301) is formed on the adapter plate (3), and a second waist-shaped hole (201) is provided on the base frame (2); the first waist-shaped hole (301) and the second waist-shaped hole (201) are perpendicular to each other and match each other.

3. The stress-free support and unloading device for reflective surface ground adjustment according to claim 1 is characterized in that: The adjustable support assembly (4) comprises a rigid support bracket (401), a ball joint (402), an upper sleeve (403), a lower sleeve (409), a fixed support (410) and a height adjustment structure; The lower sleeve (409) is installed on the fixed support (410), and the height adjustment structure is installed between the upper sleeve (403) and the lower sleeve (409); The rigid support bracket (401) is mounted on the upper sleeve (403) via a ball joint (402); the rigid support bracket (401) supports the reflecting surface (5).

4. The stress-free support and unloading device for reflective surface ground adjustment according to claim 3 is characterized in that: The height adjustment structure comprises an upper fixing nut (404), an upper locking nut (405), an adjustable support screw (406), a lower locking nut (407), a lower fixing nut (408), a height adjustment handle (4111) and a locking handle (4112); the height adjustment handle (4111) is installed on the adjustable support screw (406), and the locking handle (4112) is installed on the upper locking nut (405) and the lower locking nut (407); The upper fixing nut (404) is partially embedded in the upper sleeve (403) and connected to the upper sleeve (403), and the lower fixing nut (408) is partially embedded in the lower sleeve (409) and connected to the lower sleeve (409); the adjustable support screw (406) is threadedly matched with the upper fixing nut (404) and the lower fixing nut (408) respectively; The upper locking nut (405) and the lower locking nut (407) are respectively threadedly connected to the upper screw and the lower screw of the adjustable support screw (406). When the upper locking nut (405) and the lower locking nut (407) are respectively abutted against the upper fixing nut (404) and the lower fixing nut (408), the upper locking nut (405) locks the upper screw of the adjustable support screw (406), and the lower locking nut (407) locks the lower screw of the adjustable support screw (406).

5. The stress-free support and unloading device for reflective surface ground adjustment according to claim 4 is characterized in that: The internal thread of the lower fixing nut (408) is a right-handed thread, the internal thread of the upper fixing nut (404) is a left-handed thread, the upper screw of the adjustable support screw (406) is a left-handed thread that matches the upper fixing nut (404), and the lower screw of the adjustable support screw (406) is a right-handed thread that matches the lower fixing nut (408).

6. The stress-free support and unloading device for reflective surface ground adjustment according to claim 3 is characterized in that: The support surface of the rigid support bracket (401) is hollowed out, and a boss structure is arranged on the support surface, and the boss structure is in contact with the back side of the reflective surface (5); a flow channel (4011) is arranged on the boss structure; after the rigid support bracket (401) supports the reflective surface (5), silicone rubber is coated along the circumference of the support, and part of the silicone rubber flows from the flow channel (4011) into the hollow part (4012) of the rigid support bracket (401).

7. The stress-free support and unloading device for reflective surface ground adjustment according to claim 1 is characterized in that: The adapter plate (3) is an aluminum plate.

8. The stress-free support and unloading device for reflective surface ground adjustment according to claim 1 is characterized in that: The number of adapter plates (3) is ≥3.

9. The stress-free support and unloading device for reflective surface ground adjustment according to claim 2 is characterized in that: The base frame (2) is a profile welded structure, and the slotted aluminum on both sides of the upper end surface of the base frame (2) are respectively provided with arrays of the second waist-shaped holes (201).

10. The stress-free support and unloading device for reflective surface ground adjustment according to claim 1 is characterized in that: The movable casters (1) are fixedly mounted on the four corners of the bottom surface of the base frame (2).

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