CN106895105B - Damping vibration absorption assembly and application thereof - Google Patents
Damping vibration absorption assembly and application thereof Download PDFInfo
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- CN106895105B CN106895105B CN201710151873.6A CN201710151873A CN106895105B CN 106895105 B CN106895105 B CN 106895105B CN 201710151873 A CN201710151873 A CN 201710151873A CN 106895105 B CN106895105 B CN 106895105B
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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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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
- B60L7/00—Electrodynamic brake systems for vehicles in general
- B60L7/02—Dynamic electric resistor braking
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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
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- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
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- Acoustics & Sound (AREA)
- Aviation & Aerospace Engineering (AREA)
- Power Engineering (AREA)
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- Vibration Prevention Devices (AREA)
Abstract
The damping vibration absorption component provided by the invention comprises at least one damping vibration absorption element, each damping vibration absorption element comprises a damping insulating rod, two damping elastic elements and two bases, and two ends of the damping insulating rod are connected with the bases through the damping elastic elements. Compared with the prior art, the invention has the advantages that: through the damping vibration absorption assembly, the electromagnetic oscillation generated by large current passing through the carrier and the oscillation generated by high-temperature gas disturbance are absorbed and attenuated, the blocking structure is arranged to reduce the waveform length of the thin strip of the resistance grid, namely, the vibration amplitude of a noise source is reduced, the noise reduction level can be effectively improved, and the noise can be reduced to below 70 dB.
Description
Technical Field
The present invention relates to a vibration damping device, and more particularly, to a damping vibration absorption assembly.
Background
Noise pollution and water pollution, atmospheric pollution, waste pollution are seen as four major environmental problems worldwide. Since the industrial revolution, the creation and use of various mechanical devices has brought prosperous and advanced to human beings, but at the same time, more and more noises are generated. The measures taken to reduce noise are mainly sound insulation and absorption, but a method with low cost and good noise reduction effect is not found so far.
Taking traffic noise as an example, rail traffic modes such as subways and light rails are important traffic modes of many cities in the world, have technical and economic advantages of convenience, rapidness, punctuality, large passenger capacity, low energy consumption, light pollution, small occupied area, good safety and the like, are the first choice for solving the problem of large-city traffic, and the development of rail traffic such as subways and light rails becomes the development direction of urban traffic in China. With the continuous improvement of living standard of people, the environmental protection consciousness is strengthened day by day, and higher requirements are provided for the running environment and riding comfort of trains. The noise characteristic of the subway becomes an important index for measuring the subway quality because excessive noise seriously affects the psychology, physiology and normal life of passengers and people along the railway. The urban rail transit noise control indexes formulated by the American public transport Association are as follows: acceptable noise in the vehicle is 70-80 dB; the maximum noise in the station is 75-85 dB; the upper limit of roadside noise is 70dB in residential areas and 85dB in industrial areas (at the line centerline 15 m). The noise level indicator is measured at 0.35m to ensure that private conversations are carried out with normal sound.
In the rail transit engineering, a direct-alternating voltage and variable-frequency transmission mode is generally adopted, the braking mode of a vehicle is electric braking (regenerative braking) + mechanical braking, and the electric braking is mainly used in the operation and the mechanical braking is used as an auxiliary. During the running process of the train, the train is started and braked frequently due to the short station spacing, and the braking energy is considerable. According to experience, except that a certain proportion (generally 20% -80%, different according to the train running density and the interval distance) of energy generated by subway regenerative braking is absorbed and utilized by other adjacent trains, the rest part of energy is mainly consumed by an absorption resistor of the trains in a heating mode or absorbed by an absorption device on a line. The electric braking of the railway vehicle has two types, one is a vehicle self-provided braking resistor, and the other is ground regenerative braking absorption equipment. The hybrid braking energy absorption equipment consumes braking energy by using resistors in a hybrid mode, is mature and advanced application with high combination degree, is safe and reliable for long-term operation, and has high coefficient and extremely less maintenance capacity. With the development of society and the improvement of environmental governance requirements, the requirement for reducing the resistance noise level in operation is urgent, the corresponding brake resistance noise level at home and abroad is more than 75dB, and particularly, most of equipment is installed in the outdoor and platform working areas around the line in an operating mode, so that the influence on working life and living is generated. The urban development provides new application requirements of low-noise high-power brake resistors, and the application of the resistor noise reduction technology meets the requirements of continuous development of environmental ecology.
The high-power resistor and the braking resistor of the subway rail vehicle are usually resistor cabinet boxes, the average equivalent power is 160 kW-220 kW/surface (one surface is usually 6-8 resistor cabinet boxes), and chopped wave direct current processed by an IGBT switching power supply passes through the resistor cabinet boxes. The frequency of the chopping pulse power supply is generally in the range of 150 Hz-300 Hz, high noise electromotive force is generated for equipment, the resistance grid is heated due to large chopping pulse direct current to generate vibration propagation noise, and the size or strength of the noise is mainly determined by the amplitude of vibration of an object, so that the amplitude is large and the noise is large; the amplitude is small, and the noise is small. The vibration is caused by molecular disturbance, is related to resistance values, temperature and external frequency bands and is in direct proportion to applied voltage and current, the noise magnitude is also directly related to the structure, and the higher the power is, the more the superposed noise is accumulated. Particularly, as the working temperature of the rail transit is usually 200-550 ℃, in order to reduce the working temperature, the development trend of the resistance grid is thin, long and large, the resistance grid sheet provided by the invention is of a thin and long strip structure, and long-wave parallel arrangement is adopted in order to obtain extremely micro inductance and excellent ventilation and heat dissipation. The parameter structure of the brake (power) resistor has corresponding standard regulation, is difficult to change, has corresponding cost control and economic feasibility, and has great limitation on improvement, while the thin-sheet-shaped resistor waveform structure is slightly lengthened and bent in a waveform due to the influence of the expansion coefficient of the electrothermal alloy in high-temperature work, the electromagnetic excitation effect is increased, strong pressure difference is formed by cold and hot air, and the superposed vibration caused by convection fluctuation is an energy source of resistance noise. The number of the wave forms is large, the surface area is large, and the rigidity of the thin strip structure is poor. The high-power resistor cabinet boxes are overlapped and installed in a centralized mode, and large noise is inevitably generated due to accumulation. Generally, rail transit is usually vibration caused by chopper pulsation large current impact of a front-end power supply IGBT (insulated gate bipolar transistor) during working, thermal disturbance of cold and heat exchange during working, and noise caused by vibration caused by a resistance grid structure.
According to the existing noise control mode, the noise of the resistor cabinet device is controlled, and a sound insulation board wall is usually arranged outside the device equipment, so that the occupied space of the equipment is enlarged, and the equipment is not coordinated with the environment; or the high-power filtering unit is arranged in front of the resistance cabinet box, which can only reduce current ripple noise, and the thermal noise still exists, and the front high-power filtering unit has high manufacturing cost and large volume, occupies precious arrangement space, and cannot be used as the best choice for preventing and controlling the noise. Other prior art techniques are also limited by product standard rules.
Aiming at the technical defects of the noise pollution prevention measures, a device for simply, reasonably, effectively reducing the level of electrical noise and achieving environmental management is developed, and the problem to be solved in the field is solved.
Disclosure of Invention
The object of the present invention is to overcome the drawbacks of the prior art mentioned above,
in order to achieve the purpose, the invention provides the technical scheme that:
the invention provides a damping vibration absorption component, which comprises at least one damping vibration absorption element, wherein each damping vibration absorption element comprises a damping insulating rod, two damping elastic elements and two bases, and two ends of the damping insulating rod are respectively and independently connected with the two bases through the two damping elastic elements.
Preferably, the outer edge of the base is further provided with a base damping sleeve, and the base damping sleeve is wrapped outside the damping elastic element and used for protecting the damping elastic element from external force so as to prolong the service life of the damping vibration absorption assembly.
Preferably, the damping elastic element is selected from a rubber rod, a rubber ring, and a damping compression spring.
Preferably, the damping elastic element is a damping pressure spring, the end part of the damping insulating rod and one end of the base are respectively provided with a limiting part with a hole in the middle, and the damping elastic element is sleeved on the limiting part.
More preferably, the damping elastic element is a damping pressure spring A and a damping pressure spring B, and the damping pressure spring A is installed in the limiting part hole; and a damping pressure spring B is arranged outside the limiting part hole.
Further, the diameter of the vibration reduction pressure spring A is smaller than that of the vibration reduction pressure spring B.
More preferably, the damping compression spring a is filled with a damping vibration attenuation member, such as a mixture of a wire mesh and a damping glue.
Preferably, the bottom of the base is also provided with a shock pad; as a preferred mode, a waist-shaped pit is formed in the bottom of the base, the shock absorption pad is placed in the waist-shaped pit, and the base and the shock absorption pad are connected to a device to be denoised through bolts.
More preferably, the shock pad has a waist-shaped through hole with adjustable size, which is determined by specific use environment and the type of the resistor unit in the resistor cabinet, and is used for releasing the contact area between the framework assembly of the resistor unit and the base.
More preferably, a high-temperature resistant damping glue is filled between the contact surfaces of the shock pad and the base.
More preferably, the shock pad is a non-metallic microporous component.
Preferably, the damping insulating rod is drop-shaped in cross section.
Preferably, when the resistor unit has a thin-belt structure therein, the damping insulating rod is provided with a groove, and the thin-belt structure is clamped in the groove for increasing the contact surface between the damping vibration absorbing assembly and the resistor unit and enhancing the fixation of the damping vibration absorbing assembly.
Taking noise reduction of a long-wave resistance grid sheet (resistance grid thin strip) in a resistance box brake resistor as an example, the working principle of the damping vibration absorption component provided by the invention is as follows: the vibration reduction control of the displacement of the monolithic resistor grid thin belt structure is enhanced to reduce noise, the vibration frequency transmitted by the whole resistor grid is collected and amplitude is controlled by a damping insulating rod and transmitted to a vibration reduction elastic element, the vibration reduction elastic element is attenuated by a first layer of a matched vibration reduction pressure spring and a base vibration reduction sleeve, and then is attenuated by a second layer of a base and a vibration reduction pad to a resistor grid frame or a framework with high rigidity, the vibration of the whole brake resistor is controlled through a damping vibration absorption assembly, the level of sound radiation is reduced, a noise reduction effect is generated, and a low-noise resistor type product is obtained; in addition, the damping insulating rod adopts a small and exquisite water drop-shaped cross section, the heat dissipation performance of the resistor grid belt space is not affected, and the universality is high.
It is another object of the present invention to provide the application of the above-mentioned damping vibration absorbing assembly, which can be used for vibration and noise reduction of a long-wave resistive grid.
Preferably, the damped shock absorbing assembly is connected to a long waveform resistive grid.
Preferably, the damped shock absorbing assembly is attached to the resistive grid mount.
More preferably, the resistor grid fixing member includes an insulating fixing member and a framework assembly, and the long-wave-shaped resistor grid is mounted on the framework assembly through the insulating fixing member.
More preferably, the resistor grid fixing member includes an insulating fixing member and a frame assembly, and the long-wave-shaped resistor grid is installed in the frame assembly through the insulating fixing member.
As a preferred connection method, the damping vibration absorbing element may be clamped, inserted, screwed, and abutted to the resistance grid, or any connection method in the prior art that allows the damping vibration absorbing element to contact the resistance grid, such as abutting the base of the damping vibration absorbing element to the frame assembly or screwing the base to the frame assembly, which is not described herein.
As a preferred scheme, the brake resistor comprises a long-wave-shaped resistor grid, a resistor grid fixing part and a damping vibration absorption component, wherein the damping vibration absorption component is arranged on the resistor grid fixing part or the resistor grid sheet.
The damping vibration absorption component provided by the invention is arranged on the brake resistor to reduce vibration and noise according to the following principle: 1. the relative soft material is matched with the high-hardness electrothermal alloy material and the grid belt material in a damping way, the maximum noise vibration source in the horizontal direction of the ripple of the resistance wave type grid belt is absorbed and limited, and the noise radiated outwards through air is reduced: because 150-300 Hz pulsating current (from pulse direct current chopping frequency current energy) is a main noise source, a plurality of layers of constrained toothed plates (namely grooves arranged on the damping insulating rod corresponding to the resistor grid pieces) are used for isolating the vibration energy of each grid piece, the damping insulating rod grooves are wrapped and pressed into two symmetrical surfaces (the surfaces of the resistor grid pieces are additionally processed in a disturbed flow concave-convex shape) of the resistor grid pieces with certain thickness, the damping insulating rod absorbs and attenuates the high-frequency micro-vibration of the resistor grid pieces, and simultaneously mutually offsets the absorbed amplitude frequency which possibly collides, so that the electromagnetic noise is attenuated through the resisting pressing transmission of the structure. 2. The damping compression springs are additionally arranged, the energy of vibration of the thin and long wave-shaped sheet (resistance grid sheet) is absorbed and limited by the grooves of the damping insulating rod respectively and is transmitted to the damping compression springs B at two ends of the damping insulating rod, the damping compression springs B absorb and attenuate the vibration energy collected by each groove of the insulating rod and also collect the vibration of heavy current natural frequency, and the energy absorbed by the damping compression springs B is linearly attenuated; the damping pressure spring A is filled with damping vibration attenuation substances, and absorbs irregular frequency oscillation generated by thermal radiation of the resistance grid plate, so that viscous damping is realized. The vibration-damping elastic element absorbs and attenuates the oscillation frequency generated by different physical phenomena, and reduces the noise generated by radiating vibration to the air by the total vibration energy of the grid plate. 3. By installing the flexible insulating base and filling damping vibration dampers in the vibration damping elastic elements, after the damping vibration dampers are stressed, relative displacement of the damping vibration dampers (such as metal wires) generates sliding friction to dissipate energy. 4. The damping and vibration absorbing elements are arranged on the long-wave-shaped resistor grid sheet or the fixing element of the long-wave-shaped resistor grid sheet in a vertically symmetrical mode (note that the lengthened-wave brake resistors are arranged in an asymmetrical mode vertically), and the brake resistors provided with the damping and vibration absorbing elements are arranged in a resistor box in a current reverse symmetrical mode and connected in a cross-layer mode to mutually offset the stress of a magnetic field. The electromagnetic oscillation generated by the large current passing through the carrier and the oscillation generated by the high-temperature gas disturbance are arranged through the damping vibration absorption assembly blocking structure, so that the waveform length of the thin strip of the resistance grid can be reduced, and the vibration amplitude of a noise source is controlled. 5. The residual total vibration energy of the damping vibration absorption component which is not absorbed and attenuated from the brake resistor is transmitted to a frame or a skeleton assembly which has large mass and is thick, so that the vibration reduction efficiency of the structure is further improved.
Compared with the prior art, the invention has the following advantages:
1. the vibration reduction elastic element absorbs and attenuates the oscillation frequency generated by different physical phenomena, and reduces the noise generated by radiation vibration of the total vibration energy of the grid plate to the air;
2. the residual total vibration energy of the damping vibration absorption component which is not absorbed and attenuated from the brake resistor is transmitted to a frame or a skeleton assembly which has large mass and is thick, so that the vibration reduction efficiency of the structure is further improved;
3. the resistance grid strip sheets are pressed by adopting cross-shaped crossed rectangular convex-concave parts, and the rigidity of the sheets is enhanced by transplanting heat dissipation fins of an efficient cooler, so that the rigidity of the thin strip grid strip in the unfolding length direction is enhanced;
in summary, according to the technical scheme provided by the invention, the damping vibration absorption assembly absorbs and attenuates electromagnetic oscillation generated by a large current passing through the carrier and oscillation generated by high-temperature gas disturbance, and the arrangement of the blocking structure reduces the waveform length of the resistance grid thin strip, i.e. reduces the vibration amplitude of a noise source, so that the noise reduction level can be effectively improved, and the noise can be reduced to below 70 dB.
Drawings
FIG. 1 is a schematic view of a damping vibration absorbing element according to the present invention;
FIG. 2 is an enlarged view of portion A of FIG. 1;
FIG. 3 is a schematic view of a damping vibration absorbing element according to the present invention;
fig. 4 is a perspective view of the damping vibration absorbing element according to the present invention;
FIG. 5 is a cross-sectional view of the base of the damping vibration absorbing element according to the present invention;
FIG. 6 is a schematic view of a damping vibration absorbing element shock pad according to the present invention;
FIG. 7 is a perspective view of the damping vibration absorbing element base according to the present invention;
fig. 8 is a schematic view of a preferred embodiment of the damping vibration absorbing element according to the present invention mounted on a braking resistor;
fig. 9 is a schematic view of another preferred embodiment of the damping shock-absorbing element mounted on the braking resistor according to the present invention;
fig. 10 is a schematic view of another preferred embodiment of the damping shock-absorbing element mounted on the braking resistor according to the present invention.
Detailed Description
In order to more clearly describe the technical contents of the present invention, the following further description is given in conjunction with specific embodiments.
Example 1
As shown in fig. 1 to 5, the damping vibration absorption assembly provided by the present invention comprises at least one damping vibration absorption element 1, wherein the damping vibration absorption element comprises a damping insulating rod 11 formed by pressing PH5 type phlogopite, two damping compression springs B12, two damping compression springs a13 and two bases 14, two ends of the damping insulating rod are connected to the bases through the damping compression springs B and a damping compression spring a, specifically, two ends of the damping insulating rod and the two bases are respectively provided with a limiting member 15 having a hole in the middle, a metallic wire-shaped damping mixture (not shown in the figure) is encapsulated in the damping compression springs a and installed in the limiting member hole, the limiting member is externally sleeved with the damping compression springs B, and an outer ring of the damping compression springs B is further wrapped with a damping base sleeve 141 disposed on the bases. In addition, the bottom of the base is provided with a waist-shaped pit 142, the bottom of the base is provided with a shock pad 16, the shock pad is placed in the waist-shaped pit, the base and the shock pad are connected to a device or equipment to be denoised through bolts, and high-temperature resistant damping glue (not shown in the figure) is filled between the shock pad and the contact surface of the base. The shock pad is provided with a waist-shaped through hole 161, the size of the through hole is adjustable, and the through hole is determined according to the specific use environment and the type of the resistor unit in the resistor cabinet and is used for releasing the contact area between the framework assembly of the resistor unit and the base.
Example 2
Taking the example of applying the embodiment 1 to a certain track traffic brake resistor as an example, as shown in fig. 6 to 8, the invention provides a track traffic brake resistor, which comprises a long-wave-shaped resistor grid 2, an insulating fixing part 3, a frame assembly 4 and a damping vibration absorption component, wherein the damping vibration absorption component provided by the embodiment 1 is installed on a resistor grid thin strip of the brake resistor, a pre-filtering device in the prior art is not required to be added, a required air circulation channel in convection of a heating element can be kept, electrical noise and thermal noise are greatly reduced, the original equipment size and an additional noise insulation barrier are not increased, and the generation of a noise source is controlled by using the damping device, so that the noise level allowed by the natural environment is met. At this time, the bases at the two ends of the damping insulating rod of the damping vibration absorbing assembly provided in embodiment 1 are abutted against the frame assembly, and the base and the damping pad are connected to the frame assembly of the brake resistor through the bolt. In addition, the damping insulating rod is provided with a groove 111, a thin-band structure is clamped in the groove for increasing the contact surface between the damping vibration absorption component and the resistance unit and fixing the damping vibration absorption component, the distance between each groove and each groove can be determined according to the type of the brake resistor, specifically, the groove width and the thickness of the resistor grid are taken as the standard, and at the moment, the damping vibration absorption component can be pressed into the resistor grid to cooperate with the brake resistor to absorb vibration and reduce noise. Specifically, the damping vibration absorption components are arranged on the resistor grid in a vertically symmetrical mode, and the brake resistors provided with the damping vibration absorption components are arranged in the resistor box in a current reverse symmetrical mode and connected in a cross-layer mode to mutually offset the stress of the magnetic field. It should be noted that the elongated wave brake resistor is mounted asymmetrically up and down.
The damping vibration absorption component provided by the invention is arranged on the brake resistor to reduce vibration and noise according to the following principle: 1. the relative soft material is matched with the high-hardness electrothermal alloy material and the grid belt material in a damping way, the maximum noise vibration source in the horizontal direction of the ripple of the resistance wave type grid belt is absorbed and limited, and the noise radiated outwards through air is reduced: because 150-300 Hz pulsating current (from pulse direct current chopping frequency current energy) is a main noise source, a plurality of layers of constrained toothed plates (namely grooves arranged on the damping insulating rod corresponding to the resistor grid pieces) are used for isolating the vibration energy of each grid piece, the damping insulating rod grooves are wrapped and pressed into two symmetrical surfaces (the surfaces of the resistor grid pieces are additionally processed in a disturbed flow concave-convex shape) of the resistor grid pieces with certain thickness, the damping insulating rod absorbs and attenuates the high-frequency micro-vibration of the resistor grid pieces, and simultaneously mutually offsets the absorbed amplitude frequency which possibly collides, so that the electromagnetic noise is attenuated through the resisting pressing transmission of the structure. 2. The damping pressure spring and the damping pressure spring A are additionally arranged, the energy of vibration of a thin and long wave-shaped sheet (a resistance grid sheet) is absorbed and limited by the damping insulating rod grooves respectively and is transmitted to the damping pressure springs at two ends of the damping insulating rod, the vibration energy collected by each groove of the insulating rod is absorbed and attenuated by the damping pressure springs, the damping pressure springs are linear damping, and the amplitude frequency of the grid sheet caused by high-current electromagnetism is reduced; the vibration reduction pressure spring A absorbs irregular frequency oscillation generated by thermal radiation of the resistance grid plate and is viscous damping. The vibration-damping elastic element absorbs and attenuates the oscillation frequency generated by different physical phenomena, and reduces the noise generated by radiating vibration to the air by the total vibration energy of the grid plate. 3. By installing the flexible insulating base and filling damping vibration dampers in the vibration damping elastic elements, after the damping vibration dampers are stressed, relative displacement of the damping vibration dampers (such as metal wires) generates sliding friction to dissipate energy. 4. The damping and vibration absorbing elements are arranged on the long-wave-shaped resistor grid sheet or the fixing element of the long-wave-shaped resistor grid sheet in a vertically symmetrical mode (note that the lengthened-wave brake resistors are arranged in an asymmetrical mode vertically), and the brake resistors provided with the damping and vibration absorbing elements are arranged in a resistor box in a current reverse symmetrical mode and connected in a cross-layer mode to mutually offset the stress of a magnetic field. The electromagnetic oscillation generated by the large current passing through the carrier and the oscillation generated by the high-temperature gas disturbance are arranged through the damping vibration absorption assembly blocking structure, so that the waveform length of the thin strip of the resistance grid can be reduced, and the vibration amplitude of a noise source is controlled. 5. The residual total vibration energy of the damping vibration absorption component which is not absorbed and attenuated from the brake resistor is transmitted to a frame or a skeleton assembly which has large mass and is thick, so that the vibration reduction efficiency of the structure is further improved.
In this specification, the invention has been described with reference to specific embodiments thereof. It will, however, be evident that various modifications and changes may be made thereto without departing from the broader spirit and scope of the invention. The specification and drawings are, accordingly, to be regarded in an illustrative rather than a restrictive sense.
Claims (11)
1. Damping vibration absorbing component, its characterized in that: the damping vibration absorption device comprises at least one damping vibration absorption element, wherein each damping vibration absorption element comprises a damping insulating rod, two damping elastic elements and two bases, two ends of the damping insulating rod are respectively and independently connected with the two bases through the two damping elastic elements, a groove is formed in the damping insulating rod, a thin-band structure is clamped in the groove, a damping vibration absorption component is arranged on a resistance grid fixing part or a long-wave-shaped resistance grid piece, the resistance grid fixing part comprises an insulating fixing part and a framework assembly/frame assembly, and a brake resistor provided with the damping vibration absorption component is arranged in a resistance box in a current reverse symmetrical mode and connected in a cross-layer mode; the damping elastic element is a damping pressure spring A and a damping pressure spring B, the end part of the damping insulating rod and one end of the base are respectively provided with a limiting part with a hole in the middle, the limiting part hole is internally provided with the damping pressure spring A, and the limiting part hole is externally provided with the damping pressure spring B.
2. The damped vibration absorber assembly of claim 1 wherein: the outer edge of the base is also provided with a base damping sleeve which is coated outside the damping elastic element.
3. The damped vibration absorber assembly of claim 1 wherein: the diameter of the vibration reduction pressure spring A is smaller than that of the vibration reduction pressure spring B.
4. The damped vibration absorber assembly of claim 1 wherein: and the damping pressure spring A is filled with a damping vibration attenuation piece.
5. The damped vibration absorber assembly of claim 1 wherein: and a metal wire mesh and vibration reduction glue are filled in the vibration reduction pressure spring A.
6. The damped vibration absorber assembly of claim 1 wherein: the bottom of the base is provided with a shock pad.
7. The damped vibration absorber assembly of claim 6 wherein: the bottom of the base is provided with a waist-shaped pit, the shock pad is placed in the waist-shaped pit, and the base and the shock pad are connected on a device to be denoised through bolts.
8. The damped vibration absorber assembly of claim 7 wherein: a waist-shaped through hole is formed in the shock pad, and the size of the through hole is adjustable.
9. The damped vibration absorber assembly of claim 7 wherein: high-temperature resistant damping glue is filled between the contact surfaces of the shock pad and the base.
10. The damped vibration absorber assembly of claim 7 wherein: the shock pad is a non-metal microporous component.
11. The damped vibration absorber assembly of claim 1 wherein: the cross section of the damping insulating rod is in a water drop shape.
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Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE1540418A1 (en) * | 1965-05-19 | 1970-01-02 | Siemens Ag | External ventilated resistance device |
| CN1039500A (en) * | 1988-05-20 | 1990-02-07 | 莫塞巴克制造公司 | The resistance grid that central authorities ventilate |
| CN2089652U (en) * | 1991-03-20 | 1991-11-27 | 余青 | High reliable non-interruption resistance inductless resistor |
| CN202601341U (en) * | 2012-06-15 | 2012-12-12 | 南车株洲电力机车研究所有限公司 | Chopped wave resistance device of locomotive |
| CN202871435U (en) * | 2012-08-03 | 2013-04-10 | 株洲联诚集团有限责任公司 | Air-quantity self-adaption, low-noise and energy-saving-type urban rail locomotive brake resistor device |
| CN203311952U (en) * | 2013-05-30 | 2013-11-27 | 杨协范 | Locomotive brake resistor device |
| CN206647482U (en) * | 2017-03-14 | 2017-11-17 | 湘潭市恒创电气设备有限公司 | Damping shock absorption component |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2554423Y (en) * | 2002-07-24 | 2003-06-04 | 靳伟华 | Multi-compound damping spring shock-absorber |
| CN202196630U (en) * | 2011-08-03 | 2012-04-18 | 四川永星电子有限公司 | Mica clamping bar of stainless steel chip resistor |
-
2017
- 2017-03-14 CN CN201710151873.6A patent/CN106895105B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE1540418A1 (en) * | 1965-05-19 | 1970-01-02 | Siemens Ag | External ventilated resistance device |
| CN1039500A (en) * | 1988-05-20 | 1990-02-07 | 莫塞巴克制造公司 | The resistance grid that central authorities ventilate |
| CN2089652U (en) * | 1991-03-20 | 1991-11-27 | 余青 | High reliable non-interruption resistance inductless resistor |
| CN202601341U (en) * | 2012-06-15 | 2012-12-12 | 南车株洲电力机车研究所有限公司 | Chopped wave resistance device of locomotive |
| CN202871435U (en) * | 2012-08-03 | 2013-04-10 | 株洲联诚集团有限责任公司 | Air-quantity self-adaption, low-noise and energy-saving-type urban rail locomotive brake resistor device |
| CN203311952U (en) * | 2013-05-30 | 2013-11-27 | 杨协范 | Locomotive brake resistor device |
| CN206647482U (en) * | 2017-03-14 | 2017-11-17 | 湘潭市恒创电气设备有限公司 | Damping shock absorption component |
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| Publication number | Publication date |
|---|---|
| CN106895105A (en) | 2017-06-27 |
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