A low-overshoot brake recovery system and its recovery method with graded loading
A technology of hierarchical loading and recovery system, applied in the direction of mechanical equipment, etc., can solve the problems of difficult to achieve safe recovery, large recovery overshoot force, etc., to achieve the effect of small overshoot and ensure safe buffer recovery
Active Publication Date: 2018-03-16
BEIJING INST OF STRUCTURE & ENVIRONMENT ENG +1
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Problems solved by technology
[0003] The existing brake buffer recovery test system can provide a maximum recovery pull force of about 10t, but the system has the problem of large recovery overshoot force. When the moving speed of the separation body is greater than 8m / s, the size of the overshoot force is 3.5 times that of the stable section. times, it is difficult to achieve safe recycling of products with weak structural strength
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[0024] The present invention will be described in further detail below in conjunction with the accompanying drawings and specific embodiments.
[0025] like figure 1 As shown, a low overshoot brake recovery system with graded loading includes brake air source, accumulator, pipeline, check valve, pressure sensor, air release valve and brake device, wherein the brake air source The high-pressure brake air source is connected to the high-pressure pipeline 9 to provide high brake pressure for the high-pressure pipeline 9; the low-pressure brake air source in the brake air source is connected to the low-pressure pipeline 3 to provide low-pressure pipeline 3 Braking pressure; the rear section of the low-pressure pipeline 3 communicates with the rear section of the high-pressure pipeline 9 and then connects with the brake device that generates the recovery load for the separation body, and the pipe after the low-pressure pipeline 3 and the high-pressure pipeline 9 are connected. A p...
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The invention relates to the technical field of spaceflight test piece recovery and particularly discloses a graded loading low-overshoot braking recovery system and a recovery method thereof. Braking gas sources in the braking recovery system include a high-pressure braking gas source and a low-pressure braking gas source, wherein the high-pressure braking gas source is connected with a high-pressure pipeline and is used for providing high braking pressure for the high-pressure pipeline; the low-pressure braking gas source is connected with a low-pressure pipeline and is used for providing low braking pressure for the low-pressure pipeline; and the rear section of the low-pressure pipeline is connected with a braking device after communicating with the rear section of the high-pressure pipeline, the front section of the low-pressure pipeline is provided with a low-pressure electromagnetic valve, and the front section of the high-pressure pipeline is provided with a high-pressure electromagnetic valve. When the device is used for recovering a detached body moving at the speed of 12m / s, the ratio of an overshoot force to a smooth section recovery force is reduced from 3.5 times to 2 times, and the safe buffer recovery of the detached body with a low-strength structure is ensured.
Description
technical field [0001] The invention belongs to the technical field of recovery of aerospace test pieces, and in particular relates to a recovery system for low-overshoot brakes with graded loading and a recovery method thereof. Background technique [0002] In the large-scale ground separation test in the aerospace field, in order to enable the test piece to be repeatedly tested, it is necessary to safely recover the test piece, especially for some products with weak structural strength, the size of the recovery force must be strictly controlled to ensure the safety of the product. Safety. [0003] The existing brake buffer recovery test system can provide a maximum recovery pull force of about 10t, but the system has the problem of large recovery overshoot force. When the moving speed of the separation body is greater than 8m / s, the size of the overshoot force is 3.5 times that of the stable section. times, it is difficult to achieve safe recycling of products with weak s...
Claims
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IPC IPC(8): F15B1/02
Inventor 王佳南丁沛皮本楼李红薇史江刘文会王振宇
Owner BEIJING INST OF STRUCTURE & ENVIRONMENT ENG