CN115076288A - Cradle type damping-adjustable tower secondary radar system operation vibration control technology - Google Patents
Cradle type damping-adjustable tower secondary radar system operation vibration control technology Download PDFInfo
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- CN115076288A CN115076288A CN202210676868.8A CN202210676868A CN115076288A CN 115076288 A CN115076288 A CN 115076288A CN 202210676868 A CN202210676868 A CN 202210676868A CN 115076288 A CN115076288 A CN 115076288A
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- 238000005516 engineering process Methods 0.000 title claims abstract description 14
- 238000013016 damping Methods 0.000 claims abstract description 55
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 39
- 239000010959 steel Substances 0.000 claims abstract description 39
- 230000002093 peripheral effect Effects 0.000 claims abstract description 17
- 238000000034 method Methods 0.000 claims abstract description 13
- 238000012360 testing method Methods 0.000 claims description 5
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
- F16F15/00—Suppression of vibrations in systems; Means or arrangements for avoiding or reducing out-of-balance forces, e.g. due to motion
- F16F15/02—Suppression of vibrations of non-rotating, e.g. reciprocating systems; Suppression of vibrations of rotating systems by use of members not moving with the rotating systems
- F16F15/023—Suppression of vibrations of non-rotating, e.g. reciprocating systems; Suppression of vibrations of rotating systems by use of members not moving with the rotating systems using fluid means
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
- E04B1/00—Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
- E04B1/62—Insulation or other protection; Elements or use of specified material therefor
- E04B1/92—Protection against other undesired influences or dangers
- E04B1/98—Protection against other undesired influences or dangers against vibrations or shocks; against mechanical destruction, e.g. by air-raids
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
- F16F15/00—Suppression of vibrations in systems; Means or arrangements for avoiding or reducing out-of-balance forces, e.g. due to motion
- F16F15/02—Suppression of vibrations of non-rotating, e.g. reciprocating systems; Suppression of vibrations of rotating systems by use of members not moving with the rotating systems
- F16F15/04—Suppression of vibrations of non-rotating, e.g. reciprocating systems; Suppression of vibrations of rotating systems by use of members not moving with the rotating systems using elastic means
- F16F15/06—Suppression of vibrations of non-rotating, e.g. reciprocating systems; Suppression of vibrations of rotating systems by use of members not moving with the rotating systems using elastic means with metal springs
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16M—FRAMES, CASINGS OR BEDS OF ENGINES, MACHINES OR APPARATUS, NOT SPECIFIC TO ENGINES, MACHINES OR APPARATUS PROVIDED FOR ELSEWHERE; STANDS; SUPPORTS
- F16M5/00—Engine beds, i.e. means for supporting engines or machines on foundations
Abstract
The invention discloses a cradle type damping-adjustable tower secondary radar system operation vibration control device which is characterized by comprising a cradle type frame structure (10), an adjustable steel spring damping unit (20) and a support wall (30); the cradle type frame structure (10) comprises a peripheral horizontal frame part (11) and a central sunken frame part (12), the tower secondary radar system (40) is fixedly connected to the central sunken frame part (12), and the peripheral horizontal frame part (11) is supported on a peripheral support wall (30) through an adjustable steel spring damping unit (20). The technology can effectively ensure that the radar system has higher level stability in the operation process.
Description
Technical Field
The invention belongs to the technical field of vibration control engineering, and particularly relates to a cradle type damping-adjustable tower secondary radar system operation vibration control technology.
Background
At present, generally adopted methods for the vibration hazard of power equipment on high-rise structures such as airport towers and the like comprise a structural cavity vibration isolation layer, large concrete, a rigid support and a rubber pad spacer. However, these solutions have the following drawbacks:
1. and (4) rigid support. Vibration reduction and isolation measures are not arranged, vibration is resisted by the design of self rigidity, the stability is poor, the energy dissipation is slow, the requirement on the structure is high, and the noise pollution and the damage of vibration to personnel and equipment cannot be controlled.
2. A structural cavity layer is provided. Need set up cavity layer structure under equipment, extension vibration transmission route has certain vibration reduction and isolation effect, and the cooperation sound insulation material can reduce the noise to a certain extent. However, the method improves the building height, has high manufacturing cost, is ineffective in medium and high frequency vibration (the operating frequency of the secondary radar is about 50Hz), and has low vibration reduction efficiency.
3. And arranging a large concrete foundation. Through setting up the high density basis of bulk concrete, reduce upper portion device vibration and propagate downwards. However, the method needs to be designed in a mass ratio, the requirements for the bearing capacity and the shock resistance of the structure are improved, the design space and the construction conditions are limited, the shock resistance is improved to a limited extent, and the cost is high.
4. A rubber pad is arranged. The vibration isolation rubber belongs to a simple vibration isolation means, has low efficiency, is seriously influenced by temperature and natural aging and embrittlement of rubber, and has poor durability. In addition, the four schemes cannot accurately control and adjust vibration reduction and isolation parameters, are seriously influenced by construction errors, and are difficult to achieve the design effect.
Therefore, a new technical apparatus is needed to solve the deficiencies of the prior art.
Disclosure of Invention
In order to solve the technical problem, the invention provides a vibration control technology for a tower secondary radar system, which mainly comprises an equipment base and an adjustable steel spring viscous damper vibration control unit to realize vibration control between the secondary radar system and a building structure.
In order to achieve the purpose, the technical scheme adopted by the invention comprises the following steps:
a cradle-type damping-adjustable tower secondary radar system operation vibration control device is characterized by comprising a cradle-type frame structure (10), an adjustable steel spring damping unit (20) and a support wall (30);
the cradle type frame structure (10) comprises a peripheral horizontal frame part (11) and a central sunken frame part (12), the tower secondary radar system (40) is fixedly connected to the central sunken frame part (12), and the peripheral horizontal frame part (11) is supported on a peripheral support wall (30) through an adjustable steel spring damping unit (20).
According to an embodiment of the invention, the adjustable steel spring damping unit (20) is a steel spring oil damper.
According to an embodiment of the present invention, the cradle frame structure (10) is a cross-shaped frame structure as a whole, four ends of the cross-shaped frame constituting peripheral horizontal frame portions (11), and a central crossing portion of the cross-shaped frame constituting a central recessed frame portion (12).
According to the embodiment of the invention, the number of the adjustable steel spring damping units (20) is 4, and the adjustable steel spring damping units are respectively and uniformly fixedly arranged below the four ends of the cross-shaped frame.
According to another aspect of the present invention, there is provided a cradle-type damping-adjustable tower secondary radar system operation vibration control technology, comprising:
designing a cradle type frame structure (10), wherein the cradle type frame structure (10) comprises a peripheral horizontal frame part (11) and a central sunken frame part (12), and a tower secondary radar system (40) is fixedly connected to the central sunken frame part (12) to reduce the center of gravity and enable the system to basically approach to the state of just coincident mass; and
designing an adjustable steel spring damping unit (20) for supporting the cradle frame structure (10); the method comprises the step of determining a refined vibration control parameter system through system testing and modeling analysis.
According to the embodiment of the invention, the determination of the refined vibration control parameter system comprises the steps of fully considering the parameter conversion relation between the large support gyration radius and the stability standard value, after the unit is arranged in place and the upper load is equivalently loaded, enabling the operation stability of the whole antenna system to meet the standard requirement through repeated test comparison and field modulation damping control parameters under various working conditions, and finally determining the damping parameter value.
According to an embodiment of the invention, the damping control parameters include damping orifice, piston area, and damping fluid linear viscosity.
The invention mainly aims at the problem of vibration hazard generated during the operation of a secondary radar, and provides a high-applicability adjustable vibration control technology which comprises the following steps: and a vibration control system for connecting the secondary radar system and the tower is formed by matching the cradle type steel frame base with the steel spring adjustable viscous damping connecting unit. Wherein: the cradle type steel frame base is designed, so that the gravity center is reduced, and the controllability of the system is improved; the steel spring can adjust the viscous damping connecting unit and can be finely controlled; the larger supporting rotation distance is set, so that the rotational inertia of the base is improved, the peak value of radar vibration is reduced, the system stability is improved, and the efficiency of the damper is enlarged; after the technologies are combined, the vibration reduction efficiency is greatly improved, and is improved by about 85 percent compared with the traditional method.
The vibration control technology aims at the problem that secondary radars arranged on structures such as a tower and the like can generate dangerous engineering vibration to surrounding personnel, equipment and structures in work, and effectively weakens the adverse effect of vibration generated by the working of the secondary radars on the surrounding environment by utilizing a combined vibration control system of a cradle type equipment base and an adjustable viscous damping connecting unit which are designed based on the principle of mass and stiffness superposition.
Drawings
FIG. 1 is a schematic top view of a vibration control device for cradle-type adjustable damping tower secondary radar system operation according to an embodiment of the present invention;
FIG. 2 is a cross-sectional view of a cradle-type damping-adjustable tower secondary radar system operation vibration control device according to an embodiment of the present invention, an
Fig. 3 is a schematic diagram of a cradle-type adjustable damping tower secondary radar system according to an embodiment of the invention after a radar system is installed in a vibration control device.
Detailed Description
The present invention will now be described in further detail by way of specific embodiments with reference to the accompanying drawings, which are included to illustrate and not to limit the invention in its broadest sense.
It should be understood that some basic technical concepts related to the present invention, such as finite element modeling vibration control parameters, adjustable damping vibration control, etc., are known per se, and therefore the focus is on how to combine these basic techniques for vibration control between a secondary radar system and a building structure.
FIG. 1 is a schematic top view of a vibration control device for a cradle-type adjustable damping tower secondary radar system according to an embodiment of the present invention; fig. 2 is a cross-sectional view of a vibration control device for operating a cradle-type adjustable damping tower secondary radar system according to an embodiment of the present invention, and fig. 3 is a schematic diagram of the cradle-type adjustable damping tower secondary radar system according to an embodiment of the present invention after a radar system is installed in the vibration control device for operating the cradle-type adjustable damping tower secondary radar system. Referring to fig. 1 to 3, the cradle-type adjustable damping tower secondary radar system operation vibration control device of the embodiment may include a cradle-type frame structure (10), an adjustable steel spring damping unit (20), and a support wall (30).
As shown in fig. 2, the cradle frame structure (10) includes a peripheral horizontal frame portion (11) and a central recessed frame portion (12), the tower secondary radar system (40) is fixedly connected to the central recessed frame portion (12), and the peripheral horizontal frame portion (11) is supported on a peripheral support wall (30) through an adjustable steel spring damping unit (20). More specifically, as shown in the drawing, the cradle type frame structure (10) is a cross type frame structure as a whole, four ends of the cross type frame constituting the outer peripheral horizontal frame portions (11), and a central crossing portion of the cross type frame constituting the central recessed frame portion (12). The four ends of the cross frame are placed on the support wall (30) by means of the lower 8 adjustable steel spring damping units (20). For example, the main geometric parameters of the supporting steel frame beam square steel pipe can be 200 × 12.5mm in length, width and height, so that the whole system is close to the quality and the rigidity in coincidence.
As shown in fig. 3, the embodiment adopts a cradle type support structure form, an upper support and a lower suspension system formed by a radar antenna, a rotary connecting component, a driving motor and the like of a tower secondary radar system (40) can enable the whole system to approach the situation of quality and just coincide by reasonably reducing the gravity center design, and carry on a vibration isolation support system formed by an adjustable steel spring damping unit group, so that the infinite-freedom-degree vibration participating system is effectively reduced and decoupled to be converted into a single mass point six-freedom-degree vibration participating system, and the control efficiency and the precision are greatly improved; meanwhile, the invention increases the support turning radius as much as possible in the limited radar room space, improves the support moment of inertia of the control system and is beneficial to vibration control. The cradle type adjustable damping vibration control technology can realize the vibration reduction efficiency of more than 85 percent in a high-rise tower top radar system.
The adjustable steel spring damping unit (20) can be a steel spring oil damper, for example, the structure of which is well known in the art, for example, the adjustable steel spring oil damper can comprise an adjustable viscous damper and a positioning plate, the length, width and height of the geometric parameters of the adjustable steel spring damping unit can be 200 × 120 × 200mm, the positioning plate can be used for accurately positioning the adjustable steel spring damping unit (20) on the cradle type frame structure (10), and the rigidity and damping parameters of the adjustable steel spring damping unit (20) can be adjusted.
The implementation scheme provides a damping adjustable technology of a refined vibration control unit aiming at the requirement of higher stability in the normal operation and rotation process of the radar antenna. The core process is that a refined vibration control parameter system is determined through system test and modeling analysis, a steel spring oil liquid damper is used as a basic unit (an adjustable steel spring damping unit (20)), the damping system is finely controlled, designed and manufactured, and comprises parameters such as damping holes, piston area, damping fluid linear viscosity and the like, and fully considers the parameter conversion relation between the large support turning radius (height difference of two ends) and the stability standard value (turning angle limit value), after the unit is arranged in place and the upper load is equivalently loaded, the damping control parameters are repeatedly tested and compared and adjusted on site under various working conditions, so that the operation stability of the whole antenna system meets the standard requirement, the damping parameter values are finally determined, and the parameters are locked and unchanged through control measures, and the parameters and frequency modulation, frequency error and frequency stabilization devices jointly form a vibration control system meeting the actual engineering. The technology can effectively ensure that the radar system has higher level stability in the operation process.
The support wall (30) can be a concrete partition wall, the length, the width and the height are 4200 by 2520mm, the wall thickness is 300mm, and the internal space is large, so that later-stage maintenance and detection are convenient.
Compared with the prior art, the invention can realize the beneficial technical effects that:
1) through carrying out cradle formula structural design to steel frame base, can reduce the barycenter of subtracting the vibration isolation system, reach the matter and just coincide, be favorable to subtracting the vibration isolation system and be close non-coupling (decoupling) state, in actual engineering, control the vibration more easily.
2) Due to the adoption of the steel spring adjustable viscous damper unit, fine control can be performed, secondary adjustment can be performed after the viscous damper unit is installed in a field, the vibration reduction and isolation performance has adjustable characteristics, the energy consumption effect is effectively exerted, and interference of radar communication signals and resonance damage caused by equipment in a lower control room are avoided.
3) Through the reasonable interval that enlarges the support concrete wall, increase the inertia of steel frame base, angular acceleration beta when can effectively reduce the rotor acceleration and deceleration rotation has reduced radar peak vibration, makes it tend to stabilize, strengthens the equilibrium stability of system.
4) The cradle type base and the adjustable steel spring damper are designed according to the quality and rigidity superposition, the advantage is obvious after the space between the supporting concrete walls is reasonably expanded, the system stability is enhanced, the damper effect is enlarged, and the damping efficiency is improved by nearly 85 percent compared with that of the traditional rigid supporting method.
The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. It will be readily apparent to those skilled in the art that various modifications to these embodiments may be made, and the generic principles described herein may be applied to other embodiments without the use of the inventive faculty. Therefore, the present invention is not limited to the embodiments described herein, and those skilled in the art should make improvements and modifications within the scope of the present invention based on the disclosure of the present invention.
Claims (7)
1. A cradle-type damping-adjustable tower secondary radar system operation vibration control device is characterized by comprising a cradle-type frame structure (10), an adjustable steel spring damping unit (20) and a support wall (30);
the cradle type frame structure (10) comprises a peripheral horizontal frame part (11) and a central sunken frame part (12), the tower secondary radar system (40) is fixedly connected to the central sunken frame part (12), and the peripheral horizontal frame part (11) is supported on a peripheral support wall (30) through an adjustable steel spring damping unit (20).
2. The cradle-type damping-adjustable tower secondary radar system operation vibration control device as set forth in claim 1, characterized in that the adjustable steel spring damping unit (20) is a steel spring oil damper.
3. The cradle-type adjustable damping tower secondary radar system operational vibration control device as set forth in claim 1, characterized in that the cradle-type frame structure (10) is a cross-type frame structure as a whole, four ends of the cross-type frame constituting peripheral horizontal frame portions (11), and a central crossing portion of the cross-type frame constituting a central recessed frame portion (12).
4. The cradle-type damping-adjustable tower secondary radar system operation vibration control device as set forth in claim 3, wherein: the number of the adjustable steel spring damping units (20) is 4, and the adjustable steel spring damping units are respectively and uniformly fixedly arranged below the four end parts of the cross-shaped frame.
5. The utility model provides a tower secondary radar system operation vibration control technique of damping is adjustable to cradle formula which characterized in that includes:
designing a cradle type frame structure (10), wherein the cradle type frame structure (10) comprises a peripheral horizontal frame part (11) and a central sunken frame part (12), and a tower secondary radar system (40) is fixedly connected to the central sunken frame part (12) to reduce the center of gravity and enable the system to basically approach to the state of just coincident mass; and
designing an adjustable steel spring damping unit (20) for supporting the cradle frame structure (10); the method comprises the step of determining a refined vibration control parameter system through system testing and finite element modeling analysis.
6. The cradle-type damping-adjustable tower secondary radar system operation vibration control technology of claim 5, characterized in that: the determination of the refined vibration control parameter system comprises the steps of fully considering the parameter conversion relation between the large support turning radius and a stability standard value, after the unit is arranged in place and the upper load is equivalently loaded, enabling the operation stability of the whole antenna system to meet the standard requirement through repeated test comparison and field modulation damping control parameters under various working conditions, and finally determining the damping parameter value.
7. The cradle-type damping-adjustable tower secondary radar system operation vibration control technology of claim 6, characterized in that: the damping control parameters include damping orifice, piston area and damping fluid linear viscosity.
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| CN202210676868.8A CN115076288A (en) | 2022-06-15 | 2022-06-15 | Cradle type damping-adjustable tower secondary radar system operation vibration control technology |
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| CN202210676868.8A CN115076288A (en) | 2022-06-15 | 2022-06-15 | Cradle type damping-adjustable tower secondary radar system operation vibration control technology |
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