Large amplitude vibration active isolation lever

A technology of isolating rods and large amplitude, applied in the direction of electric components, electrical components, electromechanical devices, etc., can solve the problems of small expansion range, large bearing capacity, poor bearing capacity, etc., and achieve large vibration isolation range, large bearing capacity, and responsive fast effect

Inactive Publication Date: 2009-04-22
BEIHANG UNIV
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AI-Extracted Technical Summary

Problems solved by technology

[0004] The present invention is a large-amplitude vibration active isolation rod, and its purpose ...
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Abstract

A large-amplitude vibration active spacer bar consists of a rotor, a stator and a position sensor. When the large-amplitude vibration active spacer bar is in operation, the rotor is positioned at the upper part, the stator is positioned at the lower part and the rotor moves up and down relative to the stator so as to counteract the vibration transmitted from the stator and stabilize the rotor; the rotor consists of an internal support cylinder, a linear guide rail slide block, a linear guide rail and a motor rotor; the stator consists of a dustproof cover, a guide rail fixed plate, a motor stator, an external support cylinder, a positioning screw and a top positioning block; the position sensor consists of a grating fixed plate and a grating sensor. The large-amplitude vibration active spacer bar has the advantages of large stroke, large load capacity, quick response speed, high reliability, large vibration insulation amplitude, wide frequency band, etc.

Application Domain

Propulsion systems

Technology Topic

Frequency bandStator +5

Image

  • Large amplitude vibration active isolation lever
  • Large amplitude vibration active isolation lever
  • Large amplitude vibration active isolation lever

Examples

  • Experimental program(1)

Example Embodiment

[0029] The technical solutions of the present invention will be described in detail below through specific embodiments.
[0030] In this embodiment, the large-amplitude vibration active isolation rod includes three parts: a mover 1 , a stator 2 and a position sensor 3 . The mover 1 consists of an inner support cylinder 4, a linear guide slider 7, a linear guide 8, and a motor mover 9; the stator 2 consists of a dust cover 5, a guide rail fixing plate 6, a motor stator 10, an outer support cylinder 11, and a positioning screw 14 and the top positioning block 15; the position sensor 3 is composed of a grating fixing plate 13 and a grating sensor 12. The mover 1 is on the top, the stator 2 is on the bottom, the mover 1 moves up and down relative to the stator 2, cancels the vibration transmitted by the stator 2, and keeps the mover 1 stable. The position sensor 3 is fixed on the stator 2 to detect the stroke of the mover 1. .
[0031] The assembly process of this embodiment is to first connect the motor mover 9 with the inner support cylinder 4, install the linear guide slider 7 and the linear guide rail 8 on the three sides of the inner support cylinder 4, and complete the assembly of the mover 1; Install the top positioning block 15 on the top of the motor stator 10, then connect the bottom of the motor stator 10 to the outer support cylinder 11, then fix the top positioning block 15 with four positioning screws 14, and connect the three guide rail fixing plates 6 to the outer support cylinder. 11 is connected to complete the assembly of stator 2; next, put the assembled mover 1 into the stator 2, and after adjusting the concentricity, fix the linear guide slider 7 of the mover 1 part and the guide rail fixing plate of the stator 2 part 6. Make the mover 1 move relative to the stator 2 in the direction of the guide rail; finally connect the grating sensor 3 to the grating fixing plate 13, and then fix the grating fixing plate 13 to the outer support cylinder 11, and cover the top of the outer support cylinder 11. Dust cover 5, complete all assembly.
[0032] Among them, the motor mover (9) and the motor stator (10) are cylindrical linear motor components produced by the German BOB company, the model is DTL85/103. The continuous output force of the cylindrical linear motor at 20 degrees Celsius is 142N, with a peak value of 142N. The output force is 217N and the total stroke is 55mm. The guide rail slider (7) and the guide rail (8) are produced by Japanese THK Company, and the models are SRS15MUU and 110LM. The grating sensor (12) is RGH22 of British Renishow Company, the maximum measurement speed is 10m/s, and the measurement accuracy is 500nm.
[0033] The inner support cylinder (4), the dust cover (5), the outer support cylinder (11) and the top positioning block (15) are made of hard aluminum alloy, and the guide rail fixing plate (6) and the grating fixing plate (13) are used The material is steel. The surface treatment process used for hard aluminum alloy parts is surface anodizing, and the surface treatment process used for steel parts is chrome plating.
[0034] After the assembly is completed, the total height of the large-amplitude vibration active isolation rod is 255mm, the diameter of the circumscribed circle is 135mm, and the total mass is 5.7kg. The maximum bearing weight is 8kg, the maximum vibration active isolation amplitude is 25mm, and the maximum vibration active isolation frequency is above 50Hz.

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Description & Claims & Application Information

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