阅读说明：本技术 一种可实现多向隔振的高分子复合式浮置板道床隔振器 (Polymer composite floating slab road bed vibration isolator capable of realizing multidirectional vibration isolation ) 是由 黄雪涛 王海霞 董新婷 毋青松 于 2019-11-12 设计创作，主要内容包括：本发明提供了一种可实现多向隔振效果的高分子复合式浮置板道床隔振器,包括连接装置、承压装置和隔振装置,所述连接装置包括地脚套筒、球头螺栓、吊装螺栓及底板连接螺栓,其中地脚套筒预埋在浮置板内部,与球头螺栓通过螺纹配合连接,所述球头螺栓的端部为半球形,所述承压装置包括上盖板、承压板及底板,其中承压板和底板与隔振装置连接,所述上盖板的内部设置橡胶涂层,上表面与浮置板连接,并通过球头螺栓传递动力至承压板,所述承压板中间有球形凹槽,与球头螺栓球面配合,所述隔振装置包括保持架和弹性基体,所述保持架中部开孔,所述弹性基体深入到保持架的孔中。本发明开发了一种可实现多向隔振效果的高分子复合式浮置板道床隔振器,不仅对列车运行时产生的垂向载荷隔振效果明显,而且对列车运行过程中产生的横、纵向载荷也具有良好的隔振效果。(The invention provides a high polymer composite floating slab track bed vibration isolator capable of realizing multidirectional vibration isolation effect, which comprises a connecting device, a pressure-bearing device and a vibration isolation device, the connecting device comprises a foundation sleeve, a ball stud, a hoisting bolt and a bottom plate connecting bolt, wherein the foundation sleeve is pre-embedded inside the floating plate and is in threaded fit connection with the ball stud, the end part of the ball stud is hemispherical, the pressure-bearing device comprises an upper cover plate, a pressure-bearing plate and a bottom plate, wherein the bearing plate and the bottom plate are connected with the vibration isolation device, the upper cover plate is internally provided with a rubber coating, the upper surface of the upper cover plate is connected with the floating plate and transmits power to the bearing plate through a ball stud, a spherical groove is arranged in the middle of the bearing plate, the vibration isolation device is matched with the spherical surface of the ball stud and comprises a retainer and an elastic base body, wherein a hole is formed in the middle of the retainer, and the elastic base body extends into the hole of the retainer. The invention develops the high-molecular composite floating slab track bed vibration isolator capable of realizing the multidirectional vibration isolation effect, which not only has obvious vibration isolation effect on the vertical load generated during the running of a train, but also has good vibration isolation effect on the horizontal and longitudinal loads generated during the running process of the train.)

1. A floating slab road bed vibration isolator capable of realizing multidirectional vibration isolation effect, which comprises a connecting device, a pressure-bearing device and a vibration isolation device, the connecting device comprises a foundation sleeve, a ball stud, a hoisting bolt and a bottom plate connecting bolt, the foundation sleeve is embedded in the floating plate, is connected with the ball stud in a thread fit way, the end part of the ball stud is hemispherical, the pressure bearing device comprises an upper cover plate, a pressure bearing plate and a bottom plate, wherein the pressure bearing plate and the bottom plate are connected with the vibration isolation device, the inner part of the upper cover plate is provided with a rubber coating, the upper surface of the upper cover plate is connected with the floating plate, and transmits power to the bearing plate through the ball stud, a spherical groove is arranged in the middle of the bearing plate, the spherical groove and the ball stud are connected by a spherical surface, the vibration isolation device comprises a retainer and an elastic base body, wherein a hole is formed in the middle of the retainer, and the elastic base body extends into the hole of the retainer.

2. The isolator of claim 1 wherein the cage and elastomeric body are both polymer composite materials.

3. The isolator of claim 1 wherein said cage and elastomeric body undergo compressive deformation when the isolator is subjected to vertical loads, said upper cover plate descends with the ball stud and bearing plate, said cage and elastomeric body undergo torsional deformation when said isolator is subjected to longitudinal and lateral loads, and said isolator provides longitudinal and lateral isolation.

4. The vibration isolator of claim 1, wherein the pressure-bearing plate is coupled to the upper cover plate through the rubber coating when the vibration isolator is subjected to longitudinal and lateral loads, thereby ensuring the vibration isolation effect of the longitudinal and lateral loads and performing overload protection of the lateral and longitudinal loads.

5. The vibration isolator according to claim 1, wherein the retainer and the elastic base are both made of polymer composite materials, the retainer comprises three parts, namely a retainer outer coating, a retainer base and retainer pores, the retainer outer coating is mainly made of anti-corrosion and anti-aging materials, the retainer base is made of polymer composite materials with high temperature resistance, aging resistance and high rigidity coefficient, the retainer pores are slightly larger than the outer diameter of the elastic base, and the height of the retainer pores is slightly larger than the height of the elastic base.

Technical Field

The invention relates to a vibration isolator technology, in particular to a novel vibration isolator of a floating slab track bed.

Background

The vibration isolation technique isolates the vibration source from the protected object through an auxiliary system comprising a special device, thereby reducing the dynamic coupling between the vibration source and the protected object and reducing the transmission of undesirable vibrations to or from the protected object.

The vibration isolation technology is widely applied to the industries of aviation, oceans, machinery, civil engineering, energy and the like, and since the vibration isolation technology is introduced into the rail transportation industry, the design idea of the ballasted rail is changed, the traditional vibration attenuation mode which only depends on sleepers and broken stones is eliminated, the satisfactory vibration isolation effect is obtained by adopting the ballastless floating slab track bed vibration isolation technology, and a new place in the rail transportation industry is opened up. At present, the vibration isolator is widely applied to various ballastless track equipment, including floating slab track bed equipment.

The vibration isolator is a mechanical device which converts the kinetic energy of a vibrating object into the internal energy of an elastic material by utilizing the energy absorption principle of the elastic material of the vibration isolator. The vibration isolator has wide application field and is widely applied to occasions such as high-speed presses, automobiles, aerospace equipment platforms and the like. The existing vibration isolator is also widely applied to the field of rail transit, such as Beijing subway No. 4 line and the like. However, in the prior art, for example, in the patent CN2018100725930, because the steel spring structure adopted between the vibration isolator and the floating slab track has poor longitudinal and transverse vibration isolation effects, a new structure needs to be designed to achieve the multidirectional vibration isolation effect of the floating slab track bed vibration isolation system.

In view of the above problems, the present invention is an improvement on the above invention, and provides a new structural vibration isolator to realize multi-directional vibration isolation of a floating slab track bed vibration isolation system.

Disclosure of Invention

In order to solve the problems, the invention is improved on the basis of the previous invention, and provides a novel vibration isolator.

In order to achieve the purpose, the technical scheme of the invention is as follows:

the utility model provides a can realize multidirectional vibration isolation's board of floating road bed isolator, includes connecting device, pressure-bearing device and vibration isolator, connecting device includes rag sleeve, ball stud, hoist and mount bolt and bottom plate connecting bolt, and wherein rag sleeve is pre-buried inside floating plate, passes through screw-thread fit with ball stud and is connected, ball stud's tip is the hemisphere, pressure-bearing device includes upper cover plate, bearing plate and bottom plate, and wherein bearing plate and bottom plate are connected with the vibration isolator, the inside of upper cover plate sets up rubber coating, and the upper surface is connected with floating plate to transmit power to bearing plate through ball stud, there is spherical groove in the middle of the bearing plate, with ball stud spherical surface cooperation, vibration isolator includes holder and elastic matrix, holder middle part trompil, elastic matrix gos deep into in the hole of holder.

Preferably, the elastic base has a hardness higher than that of the retainer.

Preferably, the vibration isolation device is covered with a cover sheet.

Preferably, the thickness of the rubber coating of the upper cover plate is such that the upper cover plate is in transition fit with the bearing plate.

Preferably, the hardness of the rubber coating of the upper cover plate is lower than that of the rubber retainer.

Preferably, the pressure bearing plate is made of a vibration-absorbing wear-resistant material.

Preferably, a vulcanization process is adopted between the vibration isolation device and the pressure bearing plate to ensure the connection strength.

Preferably, a vulcanization process is adopted between the vibration isolation device and the bottom plate to ensure the connection strength.

Preferably, a vulcanized ply or the like in the elastomeric matrix increases the shear resistance of the elastomeric matrix.

Preferably, the retainer is made of high-quality rubber with high temperature resistance, oil resistance, fatigue resistance and ultraviolet resistance.

Preferably, the ball part of the ball stud and the groove part of the bearing plate are subjected to wear-resistant treatment.

Preferably, the inclination angle of the upper cover plate with respect to the pressure receiving plate and the vibration damping device is controlled within ± 3 °.

Compared with the prior art, the invention has the following advantages:

1) the invention develops a novel high-molecular composite floating slab track bed vibration isolator capable of realizing multidirectional vibration isolation, and the vibration isolator has the advantages of realizing multidirectional vibration isolation of a vibration isolation system, realizing automatic centering and quick replacement of the vibration isolation system, and playing a good vibration isolation effect.

2) The vibration isolation device is improved in structure, the high-molecular composite vibration isolation system is adopted, the material of the outer retainer has the capabilities of corrosion resistance, high temperature resistance, ultraviolet resistance and aging resistance, the rigidity of the retainer is low, the system has good elasticity, the hardness of the inner elastic matrix is high, the compression resistance and the shearing resistance are strong, the main vibration isolation effect is achieved, and the defect that the vibration isolation device is uneven in stress can be overcome through the multi-column uniform distribution type structure.

3) According to the invention, through the spherical connection between the ball stud and the spherical groove of the bearing plate, the upper part and the lower part of the vibration isolation system can be separated from contact under the action of the external lifting device, so that the replacement of the vibration isolator is facilitated.

4) According to the vibration isolation system, the rubber coating is added at the edge position of the upper cover plate, so that on one hand, the automatic aligning function of the vibration isolation system in a certain range can be ensured, meanwhile, the vibration isolation effect is realized on transverse and longitudinal dynamic loads, and when the transverse and longitudinal loads are large, the overload protection effect can also be realized.

5) According to the invention, through the threaded connection between the upper cover plate and the ball stud, the height between each vibration isolation system can be conveniently adjusted, the height error caused by construction error or uneven stress on each part of the floating slab track bed is overcome, and the field construction and detection are convenient.

Drawings

FIG. 1 is a schematic structural diagram of a polymer composite floating slab track bed vibration isolator capable of realizing multidirectional vibration isolation according to the present invention.

Fig. 2 is a schematic view of an embodiment of the polymer composite floating slab track bed vibration isolator capable of realizing multidirectional vibration isolation according to the present invention.

FIG. 3 is a schematic structural diagram of an upper cover plate of the polymer composite floating slab track bed vibration isolator capable of realizing multidirectional vibration isolation according to the present invention.

Fig. 4 is a schematic view of the vibration isolator structure of the polymer composite floating slab track bed vibration isolator capable of realizing multi-directional vibration isolation according to the present invention.

Fig. 5 is a schematic structural diagram of a bottom plate of the polymer composite floating slab track bed vibration isolator capable of realizing multidirectional vibration isolation according to the invention.

In the figure: 1-foundation sleeve, 2-ball stud, 3-upper cover plate, 4-rubber coating, 5-hoisting bolt, 6-hexagon nut, 7-washer, 8-stud, 9-retainer, 10-elastic matrix, 11-bottom plate, 12-bearing plate, 13-hoisting ring, 14-ground, 15-floating slab track bed, 31-coaming, 32-top plate, 33-longitudinal reinforcing rib, 34-central reinforcing ring, 35-transverse reinforcing rib, 91-retainer outer coating, 92-retainer matrix, 93-retainer pore, 111-vulcanized plate, 112-guide plate and 113-positioning hole.

Detailed Description

The following detailed description of embodiments of the invention refers to the accompanying drawings.

As shown in fig. 1, a polymer composite floating slab track bed vibration isolator capable of realizing multidirectional vibration isolation includes a bearing plate 12, a retainer 9, an elastic matrix 10 and a bottom plate 11, wherein the retainer 9 and the elastic matrix 10 are both made of polymer composite materials, openings are formed in the middle and the periphery of the retainer 9, the diameters of the openings are slightly larger than the outer diameter of the elastic matrix, the elastic matrix extends into the hole of the retainer 9, the elastic matrix 10 and the openings of the retainer 9 are connected together through an adhesive, the retainer 9 and the elastic matrix 10 are both fixed on the bearing plate 12 through vulcanization or other bonding methods, the height of the elastic matrix 10 is slightly smaller than that of the hole of the retainer, and the joint of the openings of the elastic matrix 10 and the retainer 9 and the bearing plate is kept flush.

The vibration isolator retainer 9 and the elastic base body 10 are both made of high-strength elastic materials, preferably high-performance rubber materials, high-performance polyurethane materials or other high polymer materials, when the designed vibration isolator bears static load of a floating slab track bed, load acts on the vibration isolator retainer 9 and the elastic base body 10 through the ground pin sleeve 1, the ball stud 2 and the pressure bearing plate 12, the retainer 9 is firstly subjected to compression deformation, when the bottom of the retainer 9 is flush with the bottom of the elastic base body 10, the retainer 9 and the elastic base body 10 share the load, and the rigidity of the vibration isolator is further improved along with the compression deformation of the retainer 9 and the elastic base body 10; when the gravity of the floating slab track bed and the supporting force of the retainer 9 and the elastic base body 10 reach balance, the vibration isolator stops moving; when a train passes through the floating slab track bed, the dynamic load generated when the train runs enables the retainer 9 and the elastic matrix 10 to continue to generate compression deformation until the support force generated by the vibration isolator is balanced with the gravity of the floating slab track bed and the dynamic load of the train, the vibration isolator stops moving, and after the train passes through the floating slab track bed, the support force generated by the vibration isolator is greater than the gravity of the floating slab track bed, the retainer 9 and the elastic matrix 10 of the vibration isolator move upwards, the support force generated by the vibration isolator gradually decreases until the support force of the vibration isolator is balanced with the gravity of the floating slab track bed, and the retainer 9 and the elastic matrix 10 of the vibration isolator stop moving; when the next train passes, the retainer 9 and the elastic base 10 of the vibration isolator start to be compressed and deformed, and a new vibration isolation stroke is started. When the elastic base 10 is compressed and deformed, the elastic base 10 becomes thick under the action of pressure, and the compressed elastic base 10 fills the gap of the open hole of the retainer 9, so that the stability of the vibration isolator is ensured.

Fig. 2 shows an embodiment of the polymer composite floating slab track bed vibration isolator capable of realizing multidirectional vibration isolation. As shown in fig. 2, the ground 14 needs to be hardened, and the stud bolt 8 is embedded, the lower end of the stud bolt 8 is located in the ground 14, and the upper end is connected with the hexagon nut 6 through the bottom plate 11 and the washer 7. The floating slab track bed 15 is in threaded connection with the ball stud 2 through the embedded anchor sleeve 1, the ball stud 2 is in spherical connection with the groove part of the bearing plate 12, and when a verticality error exists between the floating slab track bed 15 and the ground 14 due to installation errors or construction errors, the load of the ball stud 2 can be guaranteed to be always perpendicular to the bearing plate, and automatic aligning of the vibration isolation device is achieved. The inner diameter of the upper cover plate 3 is slightly larger than the outer diameter of the bearing plate 12, the inner side of the upper cover plate 3 is coated with the rubber coating 4, the bottom of the upper cover plate 3 is slightly higher than the top of the bearing plate after the vibration isolation system is installed, and threaded holes are formed in the bottom of the upper cover plate 3 and corresponding positions of the rubber coating 4 and the bearing plate 12 so as to be conveniently connected with the hoisting bolts 5 and the hoisting rings 13, and the vibration isolation device plays a hoisting role in the transportation process; the hoisting bolt 5 and the hoisting ring 13 are connected with the upper cover plate 3, the rubber coating 4 and the bearing plate 12 together in the process of carrying the vibration isolation device so as to facilitate hoisting, and when the vibration isolation system is installed and works, the vibration isolation system is taken out and properly stored so as to facilitate next hoisting; the upper cover plate 3 and the ball stud 2 are connected by bolts, when the vibration isolation system works, the retainer 9 and the elastic base 10 are compressed and deformed under the action of an external load, the upper cover plate 3 descends along with the ball stud 2 and the bearing plate 12, the upper cover plate 3, the rubber coating 4 and the bearing plate 12 are in clearance fit, when the vibration isolation system bears longitudinal and transverse loads, the bearing plate 12 is connected with the upper cover plate through the rubber coating 4, the vibration isolation effect of the longitudinal and transverse loads can be guaranteed, the overload protection effect of the transverse and longitudinal loads can be achieved, and the automatic aligning function of the vibration isolation system is limited to be achieved within a certain angle range. A jack can be placed between the ground 14 and the floating slab track bed 15, and due to the spherical connection adopted between the ball stud 2 and the bearing plate 12, under the supporting action of the jack, the ball stud 2 floats upwards along with the floating slab track bed 15, the foundation sleeve 1 and the upper cover plate 3, and the groove part between the ball stud 2 and the bearing plate 12 is separated from contact; with the further lifting of the jack, the lower end part of the upper cover plate 3 rises to be higher than the upper end part of the pressure bearing plate 12, and the replacement of the vibration isolation device can be conveniently realized after the hexagon nut 6 and the gasket 7 of the bottom plate 11 are disassembled. The ball stud 2 and the foot margin sleeve 1 are connected through threads, when the heights of the vibration isolators of all parts of the floating slab track bed are inconsistent, manual leveling of the floating slab track bed can be achieved by adjusting the position of initial thread fit, and the horizontal consistency of the floating slab track bed and the vibration isolation devices of the floating slab track bed is guaranteed.

As shown in fig. 3, the upper cover plate 3 is composed of a surrounding plate 31, a top plate 32, a longitudinal reinforcing rib 33, a central reinforcing ring 34 and a transverse reinforcing rib 35, the surrounding plate 31 and the top plate 32 are welded together, and the bottom of the surrounding plate is provided with a hoisting hole which is connected with the hoisting hole on the bearing plate through a hoisting bolt 5 during hoisting, so that the vibration isolator is convenient to assemble and disassemble; the longitudinal reinforcing ribs 33 and the transverse reinforcing ribs 35 adopt an inclined plane structure, and the thickness of the longitudinal reinforcing ribs and the transverse reinforcing ribs gradually decreases from the central part along the radial direction, so that the strength of the upper cover plate 3 is ensured, and the material is saved; threaded holes are formed in the center parts of the top plate 32 and the central reinforcing ring 34 and are in threaded connection with the ball stud 2.

As shown in fig. 4, the retainer 9 and the elastic base 10 are both made of polymer composite materials, the retainer 9 includes three parts, namely a retainer outer coating 91, a retainer base 92 and retainer pores 93, the retainer outer coating 91 is mainly made of an anti-corrosion and anti-aging material, the retainer base 92 is made of polymer composite materials with high temperature resistance, aging resistance and high rigidity coefficient, the retainer pores 93 are slightly larger than the outer diameter of the elastic base 10, and the height of the retainer pores is slightly larger than the height of the elastic base 10. When the vibration isolator works, the height of the elastic base body 10 is slightly lower than that of the retainer 9, the retainer 9 is firstly deformed under pressure, and when the compressed height is the same as that of the elastic base body 10, the elastic base body 10 starts to deform under pressure. The vibration isolation device adopts a multi-column uniform distribution type structure, so that the vibration isolation device is uniform in stress and good in vibration isolation effect.

The polymer composite floating slab road bed vibration isolator capable of realizing multidirectional vibration isolation has the advantages that the vibration isolator can realize multidirectional vibration isolation effect, is convenient to install and disassemble, can realize automatic centering and has good vibration isolation effect.

Preferably, the rigidity of the elastic base 10 is higher than that of the rubber retainer 9.

Preferably, the elastic body 10 is made of a chlorine-based laminated rubber material, and the fatigue life of the material is enhanced by a net-like laminated cord structure.

As shown in fig. 5, the bottom plate 11 includes a vulcanization plate 111, a guide plate 112 and a positioning hole 113, the vulcanization plate 111 is located in the middle of the bottom plate and is connected with the upper retainer 9 and the elastic base 10 in a vulcanization manner; the guide plate 112 adopts an inclined plate structure, and the thickness of the guide plate gradually decreases from the center to the periphery so as to facilitate the drainage of rainwater and the like; the size of the positioning hole 113 is slightly larger than that of the stud bolt 8, so as to ensure clearance fit between the stud bolt and the positioning hole.

Preferably, the bottom plate 11 is provided with an anti-slip pattern on the ground to prevent the vibration isolator from slipping.