Device for synchronously fixing and locking side surfaces of primary mirror of reflecting telescope

Abstract

The utility model discloses a device for synchronously fixing and locking the side surface of a primary mirror of a reflecting telescope. The device comprises a primary mirror holding claw, a synchronous locking ring, a locking screw, a locking device bottom plate, a locking device fixing screw and a primary mirror bottom plate, according to the device, rotation of the synchronous locking ring is converted into axial thrust on the side edge of the primary mirror, the primary mirror holding claw is pushed to gradually press the primary mirror, the contact face and pressure of the primary mirror holding claw and the primary mirror holding claw are increased at the same time, and it is ensured that the side edge of the primary mirror is pressed and fixed in a face contact mode while the primary mirror is pushed to the center of an optical axis. Compared with a traditional primary mirror side face locking mode, the problems of primary mirror eccentricity, complex installation and debugging and the like caused by stress concentration and asynchronous multi-point adjustment of a traditional device are solved.

Description

TECHNICAL FIELD

[0001] The utility model relates to a main mirror side surface synchronous fixed locking device of reflecting telescope, and the locking device relates to the field of reflecting telescope main mirror installation, fixation, locking and the like. BACKGROUND

[0002] Reflecting astronomical telescope has the advantages of large lens aperture, large light flux and high resolution, and is widely applied to the fields of astronomical observation photography, remote sensing, aerospace photography and the like. In order to keep the accurate reflecting surface of the large aperture and make the imaging more clear, the rigidity of the lens is usually ensured by increasing the thickness of the main mirror, but the mass of the main mirror is also increased, which can reach ten kilograms or even dozens of kilograms. The key link to ensure the accuracy of the whole telescope is the fixing mode of the main mirror, which requires that the center of the main mirror is strictly coincided with the optical axis, and the fixing mode of the main mirror cannot cause the main mirror to be subjected to excessive stress and result in the slight deformation of the reflecting surface to affect the final imaging. The fixing mode of the main mirror in the current practical application adopts the side surface multi-point top screw fixing mode, and there are problems such as stress concentration, uneven multi-point stress and eccentricity of the main mirror, so there are problems such as complex installation and debugging, and it is not easy to play the maximum advantage of the main mirror.

[0003] Therefore, there is a need for a stress dispersion, stress uniformity, and simultaneous application of the same pressure to the side surface of the main mirror and the shrinking of the main mirror fixing device. UTILITY MODEL CONTENTS

[0004] The utility model aims at providing a main mirror side surface synchronous locking fixing device which is convenient and reliable to install and debug, can minimize the stress on the side surface of the main mirror, and is convenient for the center of the main mirror to be coincided with the center of the main mirror bottom plate.

[0005] The main mirror side surface synchronous fixed locking device comprises a main mirror claw, a synchronous locking ring, a locking screw, a locking device bottom plate, a locking device fixing screw and a main mirror bottom plate. The main mirror claw is used for gradually applying pressure to the main mirror from the side surface. The synchronous locking ring is used for applying an axial thrust from small to large to the main mirror claw contact point by rotating the synchronous locking ring. The locking screw is used for locking the main mirror and simultaneously locking the main mirror claw and the synchronous locking ring when the center of the main mirror is coincided with the center of the main mirror bottom plate. The locking device bottom plate is used for supporting the main mirror claw and the synchronous locking ring. The locking device fixing screw is used for supporting the whole device. The main mirror bottom plate is used for fixing the locking device screw. Working principle: the main mirror side surface synchronous fixed locking device simultaneously applies pressure to the plurality of main mirror claws through the locking ring, so that the area of the main mirror claw contacting the side surface of the main mirror gradually increases, the pressure gradually increases, the stress received by the side surface of the main mirror is reduced through the surface contact to ensure the minimum deformation of the main mirror surface, and the main mirror is naturally pushed to the center of the main mirror bottom plate because the plurality of main mirror claws simultaneously apply pressure to the main mirror in the axial direction, so the problem of the centering of the main mirror is solved.

[0006] Compared with the traditional side locking mode of the primary mirror, the utility model solves the problems of stress concentration, different step of multi-point adjustment, eccentricity of the primary mirror, complicated installation and adjustment and the like of the traditional device, realizes the purposes of multi-directional synchronous locking and fixing the primary mirror, changing from point contact to surface contact, dispersing stress and not generating too concentrated stress points and naturally centering the primary mirror. BRIEF DESCRIPTION OF DRAWINGS

[0007] Figure 1 A device schematic diagram of side synchronous fixed locking of a primary mirror of a reflecting telescope.

[0008] Figure 2 A device exploded schematic diagram of side synchronous fixed locking of a primary mirror of a reflecting telescope.

[0009] Figure 3 Locking process step 1 schematic diagram.

[0010] Figure 4 Locking process step 2 schematic diagram.

[0011] Figure 5 Locking process step 3 schematic diagram.

[0012] Figure 6 Locking process step 4 schematic diagram.

[0013] Figure 7 Locking process step 5 schematic diagram.

[0014] Figure 8 Locking process step 6 schematic diagram. DETAILED DESCRIPTION

[0015] As Figure 1 shown in the device composition of side synchronous fixed locking of the primary mirror, it comprises:

[0016] 1. The primary mirror gripper (1) is used for side gripping the primary mirror.

[0017] 2. The synchronous locking ring (2) is used for synchronously pushing the primary mirror gripper to grip the primary mirror.

[0018] 3. The locking screw (3) is used for locking the primary mirror gripper and the synchronous locking ring after gripping the primary mirror.

[0019] 4. The locking device bottom plate (4) is used for bearing the primary mirror gripper and the synchronous locking ring.

[0020] 5. The locking device fixing screw (5) is used for bearing the whole locking device.

[0021] 6. The primary mirror (6).

[0022] 7. The primary mirror gripper contact point (7) is used for contacting the inner side of the synchronous locking ring and synchronously applying the centripetal force to the primary mirror gripper.

[0023] 8. Primary mirror base plate (8).

[0024] The specific working steps of the device for synchronously fixing and locking the side of the primary mirror are as follows:

[0025] 1. Locking process step 1 as follows Figure 3 Open the main mirror gripper (1) slightly to the sides and put the main mirror (6) in.

[0026] 2. Locking process step 2 as follows Figure 4 Bring the main mirror gripper (1) inward to close against the main mirror (6).

[0027] 3. Locking process step 3 as follows Figure 5 Place the synchronizing locking ring (2) outside the main mirror gripper (1), and note that the part that contacts the main mirror gripper contact point (7) is the part of the inner wall of the synchronizing locking ring (2) without protrusions.

[0028] 4. Locking process step 4 as follows Figure 6 Screw in the locking screw (3) but do not tighten it, so that the part of the inner wall of the synchronous locking ring (2) without protrusions is close to the locking screw (3).

[0029] 5. Locking process step 5 as follows Figure 7 Slowly rotate the synchronous locking ring (2) counterclockwise to make the synchronous locking ring (2)

[0030] The protruding part of the inner wall contacts the contact point of the primary mirror claw and gradually closes to the step of the protruding part. At this time, several primary mirror claws (1) gradually push the primary mirror (6) towards the center of the primary mirror base plate (8) and lock it under the synchronous push of the synchronous locking ring (2).

[0031] Locking process step 6 as follows Figure 8 Tighten the locking screw (3) to simultaneously press the synchronous locking ring (2) and the main mirror gripper (1) to complete the installation.

Claims

1. A device for synchronously fixing and locking the side of the primary mirror of a reflecting telescope, characterized in that: The device for side surface synchronous fixed locking of the primary mirror comprises primary mirror clamping jaws, a synchronous locking ring, locking screws, a locking device base plate, locking device fixing screws and a primary mirror base plate. The primary mirror clamping jaws are used to gradually apply pressure to the primary mirror from the side surface. The synchronous locking ring is used to apply an axial thrust from small to large to the primary mirror clamping jaw contact point by rotating the synchronous locking ring. The locking screws are used to lock the primary mirror and, when the center of the primary mirror coincides with the center of the primary mirror base plate, to simultaneously lock the primary mirror clamping jaws and the synchronous locking ring. The locking device base plate is used to support the primary mirror clamping jaws and the synchronous locking ring. The locking device fixing screws are used to support the entire device. The primary mirror base plate is used to fix the locking device screws. The working steps of the device for side surface synchronous fixed locking of the primary mirror include: the device for side surface synchronous fixed locking of the primary mirror simultaneously applies pressure to the plurality of primary mirror clamping jaws through the locking ring, the area of the clamping jaws contacting the side surface of the primary mirror gradually increases, the pressure gradually increases, the stress received by the side surface of the primary mirror is reduced through surface contact to ensure the minimum deformation of the primary mirror surface, and the plurality of primary mirror clamping jaws simultaneously apply pressure to the primary mirror in the axial direction to push the primary mirror to the center of the primary mirror base plate.

Images