CN212656054U - Nonlinear damping vibration isolator, floating plate with nonlinear damping vibration isolator and floating plate track system - Google Patents
Nonlinear damping vibration isolator, floating plate with nonlinear damping vibration isolator and floating plate track system Download PDFInfo
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- CN212656054U CN212656054U CN202022079203.8U CN202022079203U CN212656054U CN 212656054 U CN212656054 U CN 212656054U CN 202022079203 U CN202022079203 U CN 202022079203U CN 212656054 U CN212656054 U CN 212656054U
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Abstract
The utility model discloses a nonlinear damping vibration isolator, a floating slab with the nonlinear damping vibration isolator and a floating slab track system with the nonlinear damping vibration isolator, which comprises a fixed part, wherein the fixed part comprises a base, a damping cylinder part and a sleeve, and the damping cylinder part is fixed in the middle of the base; the sleeve is correspondingly positioned at the outer side of the damping cylinder part and is fixed along the peripheral side of the base; the moving part comprises a top cover, a steel spring and a damping piston, and the top cover is positioned above the sleeve and is in seal movable connection with the upper end of the sleeve; the steel spring is sleeved between the damping cylinder part and the sleeve, and the upper end and the lower end of the steel spring are correspondingly abutted against the top cover and the base; one end of the damping piston is fixed with the top cover, and the other end of the damping piston is positioned in the damping cylinder part; the damping cylinder part is provided with damping holes, the linear distance between the cylinder and the inner wall of the sleeve is gradually changed, and damping liquid is filled in the damping cylinder part and the sleeve. The utility model discloses can realize the variable damping characteristic of isolator for the isolator does not enlarge high frequency load when reducing the formant, has weakened the vibration of railway roadbed board, has reduced the noise simultaneously.
Description
Technical Field
The utility model relates to a technical field of making an uproar falls in the track damping, concretely relates to nonlinear damping isolator and have its floating plate rail system.
Background
In order to reduce environmental vibration noise caused by subway operation, a large number of damping rails are adopted in urban rails, wherein the best damping effect is a steel spring floating slab rail. However, researches show that the steel spring floating plate rail has obvious vibration damping effect on the vibration in the conventional frequency band above 20Hz, but the vibration damping effect is not ideal for the low-frequency vibration of the subway, and the vibration component amplification phenomenon can even occur in the low-frequency band.
The low-frequency part in the vibration has strong capability of penetrating through the stratum and buildings due to low frequency and relatively long wavelength, thereby bringing adverse effects to physical and mental health, work and daily life of nearby residents, even damaging ancient buildings and influencing the normal operation of precision instruments and high-tech equipment. The first-order natural frequency of the existing floating slab track structure is usually about 10Hz, and the existing floating slab track structure cannot play a role in vibration reduction for low-frequency vibration components between 5Hz and 15Hz which are extremely sensitive to buildings, precision instruments, human bodies and the like, but the existing floating slab track structure generates resonance because the frequency band vibration is close to the natural frequency of the track structure, so that the vibration response of the frequency band is enhanced.
The steel spring floating plate track belongs to a linear vibration isolation system, and cannot obtain lower initial vibration isolation frequency (high vibration isolation effect) and higher static bearing capacity (system stability) at the same time, so that the floating plate track system inevitably causes the vibration response increase of a wheel track system while obtaining the high vibration isolation effect, namely the floating plate track is replaced by the high vibration isolation effect through sacrificing the stability of the system. Therefore, the problems of high noise, large vibration of a track structure, more operation diseases and the like generally exist in the current special vibration reduction section. The actual measurement results of a large number of lines show that the vibration of the steel rail and the rail plate of the steel spring floating plate rail is far greater than that of a common rail; when the train passes through the steel spring floating plate section, the medium-low frequency noise of the 'corronbloom' can be generated in the train, and the riding comfort of the train is greatly influenced.
In order to improve the control effect of the floating slab track on low-frequency vibration, the traditional method is to reduce the natural frequency of the track structure, i.e. to increase the mass of the track structure or reduce the rigidity of the track structure. Due to the limitation of railway foundation building limits and cost, the vibration reduction effect brought by the mass increase of the track slab which is one of the key components of the track structure is limited; if the rigidity of the track structure is reduced, the natural frequency can be reduced, but the rigidity is reduced too much, the displacement of the track structure is increased, and the potential safety hazard of train operation is brought, so that the vibration influence in a low frequency range cannot be further reduced through the mode. Therefore, new techniques are needed to improve the low frequency vibration isolation performance of the floating plate track and reduce the vibration response of the wheel track system.
Therefore, how to provide a nonlinear damping vibration isolator and a floating plate track system with the nonlinear damping vibration isolator is a problem to be solved by those skilled in the art.
SUMMERY OF THE UTILITY MODEL
In view of this, the utility model provides a nonlinear damping isolator, and nonlinear damping separates a root ware setting on floating board, and a plurality of floating board and have its nonlinear damping separate a root ware and constitute the track system that can reduce the damping effect.
In order to achieve the above purpose, the utility model adopts the following technical scheme: a nonlinear damping vibration isolator comprises
A fixing part, which comprises a base, a damping cylinder part and a sleeve,
the damping cylinder part is fixed in the middle of the base; the sleeve is correspondingly positioned on the outer side of the damping cylinder part and is fixed along the peripheral side of the base;
the moving part comprises a top cover, a steel spring and a damping piston, and the top cover is positioned above the sleeve and is in sealing movable connection with the upper end of the sleeve through a sealing element; the steel spring is sleeved between the damping cylinder part and the sleeve, and the upper end and the lower end of the steel spring are correspondingly abutted against the top cover and the base; one end of the damping piston is fixed with the top cover, and the other end of the damping piston is positioned in the damping cylinder part;
the damping cylinder component is characterized in that a damping hole is formed in the cylinder body of the damping cylinder component, the linear distance between the cylinder body and the inner wall of the sleeve is gradually changed, and damping liquid is filled in the damping cylinder component and the sleeve.
The utility model has the advantages that: the nonlinear damping vibration isolator comprises a fixing part, wherein the fixing part comprises a base, a damping cylinder part and a sleeve, and the damping cylinder part is fixed in the middle of the base; the sleeve is correspondingly positioned at the outer side of the damping cylinder part and is fixed along the peripheral side of the base; the moving part comprises a top cover, a steel spring and a damping piston, and the top cover is positioned above the sleeve and is in seal movable connection with the upper end of the sleeve; the steel spring is sleeved between the damping cylinder part and the sleeve, and the upper end and the lower end of the steel spring are correspondingly abutted against the top cover and the base; one end of the damping piston is fixed with the top cover, and the other end of the damping piston is positioned in the damping cylinder part; the damping cylinder component and the sleeve are filled with damping liquid, and through the sliding of the steel spring and the damping piston in the damping liquid, a nonlinear damping characteristic curve is formed through the relative flow change of the damping liquid and the combined action of the steel spring, so that the nonlinear damping of the vibration isolator does not amplify the vibration transmission of high-frequency load while reducing the resonance peak, the low-frequency vibration isolation performance of the floating slab track is improved to a certain extent, the vibration of the track bed plate is weakened, the wheel track force response is attenuated, and the noise is suppressed.
Just the utility model provides a floating plate rail system has the damping and falls the performance of making an uproar good, the track stability is high, simple structure is reliable, engineering cost low grade advantage, can wide application fall the noise in the track traffic damping and fall require high and special damping subway, can also be applied to the special damping district section of high speed-per-hour subway.
Preferably, the damping cylinder part comprises a damping cylinder cover and the cylinder body, and the damping cylinder cover is fixed at the upper end of the cylinder body; the height of the cylinder is lower than that of the sleeve.
Preferably, the damping piston comprises a damping connecting rod and a damping disc, a through hole is formed in the middle of the damping cylinder cover, one end of the damping connecting rod is fixed with the top cover, and the other end of the damping connecting rod penetrates through the through hole into the cylinder body in a sliding mode; the damping disc is fixedly sleeved on the periphery of the damping connecting rod in the cylinder.
Preferably, the orifice is disposed in plurality along the cylinder.
Preferably, the damping fluid is any one of a colloidal damping agent and a high-viscosity liquid damping agent.
Preferably, the barrel is apart from the linear distance of sleeve inner wall sets up for the gradual change, including from top to bottom for reduce gradually, crescent, reduce after increasing earlier or reduce after increasing earlier, and correspond respectively the damping hole from top to bottom the aperture change is to increase in proper order, reduce after increasing earlier or increase after reducing earlier.
Preferably, the barrel is apart from the linear distance of sleeve inner wall is for gradually changing just the wall thickness of barrel from top to bottom reduces gradually, crescent, reduces after increasing or reduces after increasing earlier.
The utility model also provides a floating plate, a plurality of through holes which are penetrated up and down are arranged on the floating plate body along the length direction; a fixed sleeve is fixed on the inner wall of each through hole, and the nonlinear damping vibration isolator is correspondingly positioned in the fixed sleeve; the top cover is connected with the inner wall of the fixed sleeve; the insulating cover plate is fixed at the upper end of the through hole corresponding to the floating plate body; the base is fixed on the foundation below the corresponding through hole.
Preferably, the height of the floating plate can be adjusted by the aid of a backing plate and a clamping plate, and the backing plate abuts against the top cover; the clamping plate is abutted against the upper end face of the backing plate, and the peripheral side of the backing plate is clamped with the inner wall of the fixed sleeve.
The utility model also provides a floating slab track system, it is a plurality of floating slab lays on the road bed, nonlinear damping isolator follows the even interval distribution of floating slab length direction, adjacent two nonlinear damping isolator interval is 1.2-1.8 m.
Drawings
FIG. 1 is a cross-sectional view of the nonlinear damping vibration isolator and its floating plate according to the present invention;
FIG. 2 is a schematic plan view of the floating slab track bed of the present invention;
fig. 3 is a sectional view of the nonlinear damping vibration isolator according to embodiment 1 of the present invention;
fig. 4 is a sectional view of the nonlinear damping vibration isolator according to embodiment 2 of the present invention;
FIG. 5 is a schematic view of the damping gradual decrease nonlinear damping characteristic curve of the present invention;
FIG. 6 is a schematic view of the damping gradually increasing nonlinear damping characteristic curve of the present invention;
FIG. 7 is a schematic view of the first-larger damping and last-smaller non-linear damping characteristic curve of the present invention;
fig. 8 is a schematic view of the nonlinear damping characteristic curve of the present invention with the damping first smaller and then larger.
1 floating plate, 2 beds, 3 fixed sleeves, 4 nonlinear damping vibration isolators, 5 backing plates, 6 insulating cover plates, 8 foundations, 9 clamping plates, 10 steel springs, 11 damping pistons, 111 damping connecting rods, 112 damping discs, 12 top covers, 13 damping cylinder components, 131 cylinders, 132 damping holes, 133 damping cylinder covers, 14 bases, 15 sleeves, 16 seals and A damping cavity A, B damping cavity B, C damping gaps.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
Example 1
Referring to fig. 1 to 8 of the present invention, according to an embodiment of the present invention, a nonlinear damping vibration isolator for installation in a floating plate 1, the nonlinear damping vibration isolator 4 includes a fixing portion, the fixing portion includes a base 14, a damping cylinder part 13 and a sleeve 15, the damping cylinder part 13 is fixed in the middle of the base 14; the sleeve 15 is correspondingly positioned outside the damping cylinder part 13 and fixed along the peripheral side of the base 14;
the moving part comprises a top cover 12, a steel spring 10 and a damping piston 11, wherein the top cover 12 is positioned above the sleeve 15 and is in seal movable connection with the upper end of the sleeve 15 through a sealing piece 16; the steel spring 10 is sleeved between the damping cylinder part 13 and the sleeve 15, and the upper end and the lower end of the steel spring are correspondingly abutted against the top cover 12 and the base 14; one end of the damping piston 11 is fixed with the top cover 12, and the other end is positioned in the damping cylinder part 13;
the damping hole 132 is arranged on the cylinder body of the damping cylinder part 13, the linear distance between the cylinder body and the inner wall of the sleeve 15 is gradually changed, and damping liquid is filled in the damping cylinder part 13 and the sleeve 15;
when the damping fluid is a colloidal damping agent.
Specifically, the damper cylinder member 13 includes a cylinder 131, and the height of the cylinder 131 is lower than the height of the sleeve.
More specifically, the damping piston 11 includes a damping connecting rod 111 and a damping disc 112, the damping disc 112 is fixedly sleeved on one end of the damping connecting rod 111 and extends into the damping cylinder part 13 to contact with the colloidal damping agent.
Further, a plurality of damping holes 132 are arranged along the cylinder 131, and the colloidal damping agent in the damping sleeve part 13 can flow inside and outside the damping holes 132, and the damping piston 11 enters the damping sleeve part 13 and contacts with the colloidal damping agent, so that when the steel spring 10 moves downwards and the damping piston 11 moves downwards, the colloidal damping agent can move relatively to change the damping coefficients under different displacements.
Furthermore, the linear distance between the outer side surface of the cylinder 131 and the inner wall of the sleeve 15 is gradually changed, the linear distance between the outer side surface of the cylinder 131 and the inner wall of the sleeve 15 is gradually reduced from top to bottom, the corresponding damping holes 132 on the cylinder 131 are sequentially increased from top to bottom in diameter, a damping cavity B is formed in the damping cylinder part 13, a damping gap C is formed in the colloidal damping agent between the cylinder 131 and the sleeve 15 by the steel spring 10, when the top cover of the vibration isolator moves downwards, the damping piston 11 is driven to move downwards, because the peripheral diameter of the cylinder 131 is gradually reduced and changed from top to bottom, the damping gap C between the steel spring 10 and the cylinder 131 is gradually increased, the relative flow of the colloidal damping agent is gradually increased, the corresponding damping force and damping coefficient are relatively reduced, the diameter of the damping holes 132 is sequentially increased from top to bottom, and therefore when the damping piston, the relative flow of the colloidal damping agent inside and outside is increased, and the damping force is reduced. The damping coefficient is reduced, so that the damping coefficient and the downward displacement of the floating plate are downward nonlinear curves according to the size change of the cylinder and the damping aperture, the problem of resonance caused by the linear damping change of the conventional steel spring is solved, the relative flow of damping liquid is influenced by the change of the diameters or the radiuses of the cylinder and the damping hole, the damping characteristic is further influenced, the nonlinear damping characteristic is formed, the resonance can be reduced, and the noise is reduced.
The linear distance of barrel 131 apart from sleeve 15 inner wall is the gradual change setting, specifically, the barrel 131 inner wall is vertical unchangeable, and the barrel cross-section is barrel thickness from top to bottom crescent or reduce gradually, or crescent earlier and then reduce gradually the setting, and the change in damping hole 132 aperture is unanimous with the linear distance change of barrel 131 apart from sleeve 15 inner wall.
Example 2
When the peripheral diameter of the cylinder 131 is gradually increased from top to bottom, the corresponding aperture of the damping hole 132 on the cylinder 131 is sequentially reduced from top to bottom, a damping cavity B is formed in the damping cylinder part 13, a damping clearance C is formed in the damping liquid between the cylinder 131 and the sleeve 15 by the steel spring 10, when the vibration isolator top cover moves downwards, the damping piston 11 is driven to move downwards, because the peripheral diameter of the cylinder 131 is gradually increased and changed from top to bottom, the damping clearance C between the steel spring 10 and the cylinder 131 is gradually reduced, the relative flow of the damping liquid is gradually reduced, the corresponding damping force and damping coefficient are relatively increased, and the aperture of the damping hole 132 is sequentially reduced from top to bottom, so when the damping piston 11 moves downwards, the relative flow of the damping liquid inside and outside is reduced, and the damping force is increased. The damping coefficient is increased, so that the displacement relation between the damping coefficient and the floating plate is an upward nonlinear curve according to the change of the sizes of the cylinder and the damping aperture, a nonlinear damping characteristic is formed corresponding to the graph 6, the problem of resonance caused by the linear damping characteristic of the conventional steel spring can be solved, and the noise can be reduced.
Example 3
When the diameter of the cylinder 131 is increased and then decreased from top to bottom, the corresponding hole diameter of the damping hole 132 on the cylinder 131 is decreased and then increased from top to bottom, a damping cavity B is formed in the damping cylinder part 13, the steel spring 10 forms a damping gap C in the damping fluid between the cylinder 131 and the sleeve 15, and when the top cover of the vibration isolator moves downwards, the damping piston 11 is driven to move downwards, since the diameter of the outer circumference of the cylinder 131 is changed from up to down by increasing and then decreasing, the damping clearance C between the steel spring 10 and the cylinder 131 is gradually decreased and then gradually increased, the relative flow of the damping fluid is gradually decreased and then gradually increased, the corresponding damping force and damping coefficient are increased and then decreased, the aperture of the damping hole 132 is decreased and then increased from top to bottom, therefore, when the damping piston 11 moves downward, the relative flow rate of the damping fluid inside and outside is reduced and then increased, and the damping force is increased and then decreased. The damping coefficient is increased and then decreased, so that according to the change of the cylinder and the damping aperture, the damping coefficient and the displacement relation of the floating plate correspond to the figure 7, a nonlinear damping characteristic is formed, and a nonlinear damping characteristic curve is designed according to the load of the floating plate when the vehicle passes through the vehicle and is related to the damping characteristic of the damping liquid and the elastic modulus of the steel spring.
Example 4
When the diameter of the cylinder 131 is reduced from top to bottom and then increased, the corresponding hole diameter of the damping hole 132 on the cylinder 131 is increased from top to bottom and then decreased, a damping cavity B is formed in the damping cylinder part 13, the steel spring 10 forms a damping gap C in the damping fluid between the cylinder 131 and the sleeve 15, and when the top cover of the vibration isolator moves downwards, the damping piston 11 is driven to move downwards, since the diameter of the outer periphery of the cylinder 131 is changed from top to bottom in a decreasing and then increasing manner, the damping clearance C between the steel spring 10 and the cylinder 131 is gradually increased and then gradually decreased, the relative flow rate of the damping fluid is gradually increased and then gradually decreased, the corresponding damping force and damping coefficient are relatively decreased and then increased, the aperture of the damping hole 132 is increased and then decreased from top to bottom, therefore, when the damping piston 11 moves downward, the relative flow rate of the damping fluid inside and outside increases first and then decreases, and the damping force decreases first and then increases. The damping coefficient is reduced and then increased, so that the damping coefficient and the floating plate displacement relation correspond to a graph 8 according to the size change of the cylinder and the damping aperture, and a nonlinear damping characteristic is formed.
Example 5
A nonlinear damping vibration isolator for being installed in a floating slab 1 comprises a fixed part, wherein the fixed part comprises a base 14, a damping cylinder part 13 and a sleeve 15, and the damping cylinder part 13 is fixed in the middle of the base 14; the sleeve 15 is correspondingly positioned outside the damping cylinder part 13 and fixed along the peripheral side of the base 14;
the moving part comprises a top cover 12, a steel spring 10 and a damping piston 11, wherein the top cover 12 is positioned above the sleeve 15 and is in seal movable connection with the upper end of the sleeve 15 through a sealing piece 16; the steel spring 10 is sleeved between the damping cylinder part 13 and the sleeve 15, and the upper end and the lower end of the steel spring are correspondingly abutted against the top cover 12 and the base 14; one end of the damping piston 11 is fixed with the top cover 12, and the other end is positioned in the damping cylinder part 13;
the damping hole 132 is arranged on the cylinder body of the damping cylinder part 13, the linear distance between the cylinder body and the inner wall of the sleeve 15 is gradually changed, and damping liquid is filled in the damping cylinder part 13 and the sleeve 15.
The damping fluid is a high viscosity fluid damping agent.
Specifically, the damping cylinder part 13 comprises a damping cylinder cover 133 and a cylinder 131, and the damping cylinder cover 133 is fixed at the upper end of the cylinder 131; the height of the cylinder 131 is lower than the height of the sleeve 15.
More specifically, the damping piston 11 includes a damping connecting rod 111 and a damping disc 112, a through hole is formed in the middle of the damping cylinder cover 133, one end of the damping connecting rod 111 is fixed with the top cover 12, and the other end of the damping connecting rod slides through the through hole into the cylinder 131; the damping disk 112 is fixedly sleeved on the peripheral side of the damping connecting rod 111 in the cylinder 131 and is contacted with the high-viscosity liquid damping agent.
Further, a plurality of damping holes 132 are arranged along the cylinder 131, the damping holes 132 are formed in the cylinder 131, damping fluid in the damping sleeve part 13 can flow inside and outside through the damping holes 132, the damping cylinder cover 133 is fixedly connected to the top of the cylinder 131, a through hole is formed in the middle of the damping cylinder cover 133, the damping piston 11 enters the damping cylinder part 13 through the through hole and contacts with the damping fluid, and when the steel spring 10 moves downwards and the damping piston 11 moves downwards, relative movement of the damping fluid can be caused, so that damping coefficients under different displacements can be changed.
Furthermore, the linear distance between the cylinder 131 and the inner wall of the sleeve 15 is gradually changed and gradually reduced from top to bottom, the corresponding damping holes 132 on the cylinder 131 are sequentially increased in aperture change from top to bottom, a damping cavity B is formed in the damping cylinder part 13, the steel spring 10 forms a damping gap C in the damping fluid between the cylinder 131 and the sleeve 15, when the top cover of the vibration isolator moves downwards, the damping piston 11 is driven to move downwards, the peripheral diameter of the cylinder 131 is gradually reduced and changed from top to bottom, so the damping gap C between the steel spring 10 and the cylinder 131 is gradually increased, the relative flow of the damping fluid is gradually increased, the corresponding damping force and damping coefficient are relatively decreased, and the aperture of the damping holes 132 is sequentially increased from top to bottom, so that when the damping piston 11 moves downwards, the relative flow of the damping fluid inside and outside is increased, and the damping force is decreased. The damping coefficient is reduced, so that the damping coefficient and the downward displacement of the floating plate are downward nonlinear curves according to the size change of the cylinder and the damping aperture, the problem of resonance caused by the linear damping change of the conventional steel spring is solved, the relative flow of damping liquid is influenced by the change of the diameters or the radiuses of the cylinder and the damping hole, the damping characteristic is further influenced, the nonlinear damping characteristic is formed, the resonance can be reduced, and the noise is reduced.
Example 6
When the linear distance from the cylinder 131 to the inner wall of the sleeve 15 is gradually changed and the wall thickness of the cylinder 131 is gradually reduced from top to bottom, the corresponding damping holes 132 on the cylinder 131 are sequentially increased from top to bottom in diameter, a damping cavity B is formed in the damping cylinder part 13, the steel spring 10 forms a damping clearance C in the high-viscosity liquid damping agent between the cylinder 131 and the inner wall of the sleeve 15, and when the top cover of the vibration isolator moves downwards, the damping piston 11 is driven to move downwards, since the wall thickness of the cylinder 131 is gradually reduced from top to bottom, the damping clearance C between the steel spring 10 and the cylinder 131 is gradually increased, the relative flow of the colloidal damping agent is gradually increased, the corresponding damping force and damping coefficient are relatively decreased, the aperture of the damping hole 132 is sequentially increased from top to bottom, therefore, when the damping piston 11 moves downward, the relative flow rate of the colloidal damping agent between the inside and the outside increases, and the damping force decreases. The damping coefficient is reduced, so that according to the changes of the wall thickness and the damping aperture of the cylinder, the damping coefficient and the downward displacement of the floating plate form a downward nonlinear curve, the problem of resonance caused by the linear damping change of the conventional steel spring is solved, the relative flow of damping liquid is influenced by the wall thickness change of the cylinder and the change of the diameter or radius of the damping hole, the damping characteristic is further influenced, the nonlinear damping characteristic is formed, the resonance can be reduced, and the noise is reduced.
In addition, the utility model also discloses a floating plate 1, a plurality of through holes which are penetrated up and down are arranged on the floating plate body along the length direction; a fixed sleeve 3 is fixed on the inner wall of each through hole, and the nonlinear damping vibration isolator 4 is correspondingly positioned in the fixed sleeve 3; the top cover 12 is connected with the inner wall of the fixed sleeve 3; the insulating cover plate 6 is fixed at the upper end of the through hole corresponding to the floating plate body; the base 14 is fixed on the foundation 8 below the corresponding through hole.
Specifically, the floating device further comprises a backing plate 5 and a clamping plate 9, wherein the height of the floating plate 1 can be adjusted, and the backing plate 5 is abutted against a top cover 12; the clamping plate 9 is abutted against the upper end face of the backing plate 5, and the peripheral side of the clamping plate is clamped with the inner wall of the fixed sleeve 3.
Furthermore, the utility model discloses a floating slab track system is laid on railway roadbed 2 by a plurality of floating slabs 1, and constitutes track system with a plurality of nonlinear damping isolator 4, and nonlinear damping isolator 4 is along the even interval distribution of 1 length direction of floating slab, and two adjacent nonlinear damping isolator 4 intervals are 1.2-1.8 m.
For the device and the using method disclosed by the embodiment, the description is simple because the device and the using method correspond to the method disclosed by the embodiment, and the relevant points can be referred to the description of the method part.
The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (10)
1. A nonlinear damping vibration isolator is characterized by comprising
A fixed part including a base (14), a damper cylinder member (13) and a sleeve (15),
the damping cylinder part (13) is fixed in the middle of the base (14); the sleeve (15) is correspondingly positioned outside the damping cylinder component (13) and is fixed along the peripheral side of the base (14);
a moving part which comprises a top cover (12), a steel spring (10) and a damping piston (11),
the top cover is positioned above the sleeve (15) and is in sealing movable connection with the upper end of the sleeve (15) through a sealing element (16); the steel spring (10) is sleeved between the damping cylinder part (13) and the sleeve (15), and the upper end and the lower end of the steel spring are correspondingly abutted against the top cover (12) and the base; one end of the damping piston (11) is fixed with the top cover (12), and the other end of the damping piston is positioned in the damping cylinder part (13);
the damping cylinder component (13) is characterized in that a damping hole (132) is formed in the cylinder body of the damping cylinder component (13), the distance between the cylinder body and the inner wall of the sleeve (15) is gradually changed, and damping liquid is filled in the damping cylinder component (13) and the sleeve (15).
2. The nonlinear damping vibration isolator of claim 1, characterized in that the damping cylinder component (13) comprises a damping cylinder cover (133) and the cylinder body (131), the damping cylinder cover (133) is fixed on the upper end of the cylinder body (131); the height of the cylinder (131) is lower than the height of the sleeve (15).
3. The nonlinear damping vibration isolator of claim 1, characterized in that the damping piston (11) comprises a damping connecting rod (111) and a damping disc (112), one end of the damping connecting rod (111) is fixed with the top cover (12), and the other end of the damping connecting rod extends into the inner cavity of the cylinder (131); the damping disc (112) is fixedly sleeved on the peripheral side of the damping connecting rod (111) in the cylinder body (131).
4. A non-linear damping vibration isolator according to any one of claims 1 to 3, characterized in that a plurality of damping holes (132) are arranged along the barrel (131).
5. The nonlinear damping vibration isolator of any one of claims 1 to 3, wherein the damping fluid is any one of a colloidal damping agent and a high viscosity liquid damping agent.
6. The nonlinear damping vibration isolator according to any one of claims 1 to 3, wherein the linear distance between the cylinder (131) and the inner wall of the sleeve (15) is gradually changed, including gradually decreasing, gradually increasing, increasing first and then decreasing or decreasing first and then increasing from top to bottom, and the corresponding damping holes (132) are changed from the hole diameter from top to bottom to be sequentially increasing, sequentially decreasing, decreasing first and then increasing or increasing first and then decreasing.
7. The non-linear damping vibration isolator of claim 6 wherein the linear distance of the barrel (131) from the inner wall of the sleeve (15) is gradual and the wall thickness of the barrel is gradually reduced, gradually increased, increased and then reduced or decreased and then increased.
8. A floating plate, which is characterized by comprising the nonlinear damping vibration isolator (4) as claimed in any one of claims 1 to 7, a floating plate body and an insulating cover plate (6), wherein the floating plate body is provided with a plurality of through holes which penetrate through the floating plate body up and down along the length direction of the floating plate body; a fixed sleeve (3) is fixed on the inner wall of each through hole, and the nonlinear damping vibration isolator (4) is correspondingly positioned in the fixed sleeve (3); the top cover (12) is connected with the inner wall of the fixed sleeve (3); the insulating cover plate (6) is fixed at the upper end of the floating plate body corresponding to the through hole; the base (14) is fixed on the foundation (8) below the corresponding through hole.
9. The floating plate according to claim 8, characterized by further comprising a backing plate (5) and a clamping plate (9) capable of adjusting the height of the floating plate (1), wherein the backing plate (5) abuts against the top cover (12); the clamping plate (9) is abutted against the upper end face and the peripheral side of the backing plate (5) and is clamped with the inner wall of the fixed sleeve (3).
10. A floating slab track system comprising a plurality of floating slabs as claimed in claim 8 or 9, a plurality of said floating slabs (1) being laid on a track bed (2), said nonlinear damping vibration isolators (4) being evenly spaced apart along the length of said floating slabs (1), and the distance between two adjacent nonlinear damping vibration isolators (4) being 1.2-1.8 m.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
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| CN111962339A (en) * | 2020-09-21 | 2020-11-20 | 中国铁道科学研究院集团有限公司铁道建筑研究所 | Nonlinear damping vibration isolator, floating plate with nonlinear damping vibration isolator and floating plate track system |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN111962339A (en) * | 2020-09-21 | 2020-11-20 | 中国铁道科学研究院集团有限公司铁道建筑研究所 | Nonlinear damping vibration isolator, floating plate with nonlinear damping vibration isolator and floating plate track system |
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