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An umbrella-shaped retractable limit protection device for a three-axis air bearing platform

A technology of limit protection and air bearing, which is applied in the direction of bearings, shafts and bearings, machine platforms/supports, etc., and can solve problems that have not yet collected data, found no instructions or reports, etc.

Active Publication Date: 2017-11-14
SHANGHAI SATELLITE ENG INST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] At present, there is no description or report of a technology similar to the present invention, and no domestic similar data has been collected yet.

Method used

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  • An umbrella-shaped retractable limit protection device for a three-axis air bearing platform
  • An umbrella-shaped retractable limit protection device for a three-axis air bearing platform

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] Example 1: The working principle diagram of a three-axis air bearing platform umbrella-shaped retractable limit protection device provided by the present invention is as follows figure 1 As shown, in the circumferential direction of the large three-axis air-floating billiard ball bearing 1 and the ball bearing support column 11, the push rods 2 with nut protection are evenly distributed at 60 degrees apart, and the telescopic range of the push rod 2 with nut protection can be adjusted synchronously through electronic control. To adjust the free rotation angle of the instrument panel body 3, prevent the instrument panel body 3 from tipping over at a large angle and damage the test equipment.

[0021] The three-axis air bearing table is designed to have a rotation angle range of ±15° around the two horizontal axes, and the umbrella-shaped retractable limit protection device is designed with six push rods 2 with nut protection. The diameter is 36mm, and the push rod 2 with ...

Embodiment 2

[0022] Embodiment 2: Six umbrella-shaped retractable limit protection units such as figure 2 As shown, servo motor 4 and reducer 5 are used for electric control, through angular contact ball bearing (7010AC) 6, large bevel gear 7, deep groove ball bearing (6208) 8 and a screw rod installed on six bevel gear seat 9 The screw mandrel six bevel gears 10 work in conjunction to drive; the screw mandrel six bevel gears 10 realize elongation and shortening of the band nut protection push rod 2 installed on the push rod track. The entire protection device is installed on the ball bearing support column 11, the maximum travel speed of the retractable limit protection push rod is 0.572m / s, and the telescopic range is 0-202mm. The command sent by the ground console can realize linkage and synchronous adjustment of the expansion and contraction of six push rods with nuts for system application.

[0023] The retractable limit protection device of the large three-axis air flotation platfo...

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Abstract

The invention discloses an umbrella-shaped telescopic limiting protection device for a three-axis air floating platform. The umbrella-shaped telescopic limiting protection device for the three-axis air floating platform comprises an instrument desk body and further comprises a hexagonal-umbrella-shaped telescopic limiting protection unit. The center of the lower end of the instrument desk body is installed on the hexagonal-umbrella-shaped telescopic limiting protection unit through an air floating desk ball bearing. The hexagonal-umbrella-shaped telescopic limiting protection unit comprises an angular contact ball bearing, a big bevel gear, a deep groove ball bearing, a lead screw hexagonal-umbrella-shaped gear, a hexagonal-umbrella-shaped gear seat, a protective push rod, a flexible limiting contact, a ball bearing support column, a servo motor and a speed reducer, wherein the protective push rod is provided with a nut. The umbrella-shaped telescopic limiting protection device for the three-axis air floating platform has the characteristics that the size is large, the bearing capacity is large, and micro-disturbance-torque environmental simulation is achieved; and the defect that the instrument desk body possibly falls accidentally due to the change of the test environment in a testing process of the three-axis air floating platform, and consequentially on-board equipment participating in testing or equipment of the three-axis air floating platform is damaged is overcome.

Description

technical field [0001] The invention relates to the technical field of satellite simulation operation control, in particular to an umbrella-shaped retractable limit protection device for a three-axis air bearing platform. Background technique [0002] The three-axis air-floor table supported by air-floating ball bearings can rely on the air film formed between the air-floating ball and the bearing seat by compressed air to make the simulated instrument table body float, which can not only simulate the three-axis direction required by the satellite in orbit Attitude movement can also simulate the satellite three-axis attitude coupling dynamics. [0003] Due to the increasingly high requirements for image resolution, pointing accuracy, and positioning accuracy of large-scale optical remote sensing satellites, it is necessary to use a large-scale three-axis air bearing table for physical simulation on the ground. The micro-interference torque requirement of the three-axis air ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F16M11/14F16C32/06
CPCF16C32/0614F16M11/14
Inventor 潘高伟宋效正杜冬王田野仲惟超
Owner SHANGHAI SATELLITE ENG INST