Stepless height adjustment ballast bed vibration isolator device

Abstract

A stepless height adjusting ballast bed vibration isolator device sequentially comprises an embedded flange assembly, a bearing plate assembly, a rubber spring, a bottom plate assembly and a stepless height adjusting assembly from top to bottom, and the embedded flange assembly comprises a disc-shaped flange plate poured together with a concrete ballast bed plate; a plurality of connecting steel bars extending into a roadbed slab are welded to the inner side face of the flange plate, the bearing plate assembly is connected and fixed to the flange plate and clamps and fixes the upper end of the rubber spring, the lower end of the rubber spring is clamped and fixed to the bottom plate assembly, and the stepless height adjusting assembly is arranged below the bottom plate assembly. The stepless height adjusting assembly is of a bag-shaped structure, is hollow and is provided with a grouting opening and an exhaust opening. Therefore, the stepless height adjustment device is simple in structure and convenient to operate, the manufacturing cost can be greatly reduced on the premise that the vibration isolation performance is guaranteed, stepless height adjustment of the vibration isolator can be achieved, and the installation and construction precision of the vibration isolator is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of vibration reduction and noise reduction in rail transit, and particularly relates to a stepless height-adjustable track bed vibration isolator device for track bed vibration reduction. Background Art

[0002] In the field of rail transit, a vibration reduction track bed is an engineering facility used to prevent or reduce the impact of ground vibration on buildings or the surrounding environment when a train is overloaded. By setting an elastic support system under the track bed slab, it can effectively absorb and disperse vibration energy, thereby reducing the impact of vibration on buildings or equipment. The existing vibration reduction and isolation devices generally used in vibration reduction track beds are: rubber spring vibration isolators, steel spring vibration isolators, rubber vibration reduction pads, etc. Among them, rubber spring and steel spring vibration reduction are point support vibration isolation systems, and rubber vibration reduction pads are surface support vibration isolation systems. Due to different requirements for track bed installation environments and track bed vibration reduction, the use of rubber vibration reduction pads has certain limitations, such as requirements for the flatness of the base and the inability to adjust the track bed elevation. Therefore, the point support vibration reduction method with rubber spring vibration isolators and steel spring vibration isolators as the main vibration reduction units is used more and more. This invention mainly aims at a point support vibration reduction device to make up for some deficiencies and drawbacks of existing rubber spring and steel spring vibration isolators.

[0003] The existing rubber spring vibration isolator ( Regulatory Vibration Isolator of CN202221905379.7 ) and steel spring vibration isolator ( Steel Spring Vibration Isolator of CN202210872568.7 ) are installed on the track bed slab as follows: A number of metal sleeves are evenly distributed on the concrete track bed in advance according to design requirements. The sleeve is a through-type metal cylinder structure, and a horizontal plate is arranged on the inner wall. The rubber spring and steel spring vibration isolators are installed under the horizontal plate of the outer cylinder through a support plate, and the load and vibration are transmitted through the contact between the horizontal plate and the support plate. During actual installation, due to construction errors of the base, the heights of the vibration isolators at each point may be different. If the height consistency is to be ensured, height-adjusting gaskets for adjusting the height need to be inserted between the horizontal plate and the support plate to achieve the required track bed elevation. In addition, when installing the vibration isolators, the track bed slab needs to be jacked up one by one and then installed in sequence, which is time-consuming and laborious. Through the above description, the deficiencies of existing rubber spring and steel spring vibration isolators are that the pre-buried through-type outer cylinder is relatively bulky, the manufacturing cost is relatively high, the height-adjusting method is relatively rough and a bit troublesome, and the accuracy of the track bed height adjusted by this fixed-thickness height-adjusting gasket is also insufficient, which is not suitable for high-speed train sections.

[0004] Therefore, in view of the above defects, the designer of the present utility model has painstakingly studied and designed, and integrated the experience and achievements of being engaged in related industries for many years, and designed a stepless height-adjustable track bed vibration isolator device to overcome the above defects. Content of the Utility Model

[0005] The purpose of the present utility model is to provide a vibration isolator device for a ballastless adjustable-height track bed, which has a simple structure, is convenient to operate, can greatly reduce the manufacturing cost on the premise of ensuring the vibration isolation performance, can achieve stepless height adjustment of the vibration isolator, and improves the installation and construction accuracy of the vibration isolator.

[0006] To achieve the above object, the present utility model discloses a vibration isolator device for a ballastless adjustable-height track bed, which successively includes a pre-embedded flange assembly, a support plate assembly, a rubber spring, a bottom plate assembly and a stepless height adjustment assembly from top to bottom, and is characterized in that:

[0007] The pre-embedded flange assembly includes a disc-shaped flange plate cast together with the concrete track bed slab. Multiple connecting steel bars extending into the track bed slab are welded on the inner side surface of the flange plate. The support plate assembly is connected and fixed to the flange plate and clamps and fixes the upper end of the rubber spring. The lower end of the rubber spring is clamped and fixed to the bottom plate assembly. The stepless height adjustment assembly is arranged below the bottom plate assembly. The stepless height adjustment assembly is of a bag-like structure, with a hollow interior and provided with a grouting port and an exhaust port.

[0008] Wherein: the stepless height adjustment assembly includes a polymer flexible outer sleeve made of a polymer flexible material.

[0009] Wherein: the flange plate is made of steel plate with a thickness of 8 - 20 mm. A plurality of through circular connecting holes are evenly distributed thereon. The length of the connecting steel bars is 60 - 150 mm, and their positions correspond to the evenly distributed connecting holes. Threaded holes are provided at the connection positions of the connecting steel bars and the connecting holes.

[0010] Wherein: the support plate assembly includes a disc-shaped support plate. The support plate is provided with a plurality of flange connection holes corresponding to the connecting holes. After a plurality of connecting bolts penetrate through the flange connection holes, the support plate assembly is fixed to the pre-embedded flange assembly.

[0011] Wherein: a plurality of upper limit convex platforms are evenly installed on the lower end surface of the support plate. The inner side surfaces of the plurality of upper limit convex platforms are arc-shaped so as to wrap around the upper flange of the rubber spring to limit the lateral displacement of the upper end of the rubber spring. Each limit convex platform is respectively fixed with a retaining piece through an upper connecting rivet. The inner edge of the retaining piece is clamped under the upper flange of the rubber spring to limit the longitudinal displacement of the rubber spring.

[0012] Wherein: the thickness of the support plate is 8 - 20 mm, made of a metal material, and has a shape of a circular flat plate structure. The height of the upper limit convex platform is 8 - 12 mm, and the thickness of the retaining piece is 2 - 5 mm.

[0013] Among them: the bottom plate assembly includes a disc-shaped bottom plate, and a plurality of lower limit bosses are evenly installed on the upper end surface of the bottom plate. The inner side surfaces of the plurality of lower limit bosses are arc-shaped so as to cover the lower flange of the rubber spring to limit the lateral displacement of the lower end of the rubber spring. Each lower limit boss is fixed to the bottom plate through a lower connecting rivet, and the lower connecting rivet is engaged with the lower flange of the rubber spring to limit the longitudinal displacement of the rubber spring.

[0014] Among them: the thickness of the bottom plate is 8 - 20 mm, it is made of metal material, and its shape is a circular flat plate structure. The height of the lower limit boss is 8 - 12 mm.

[0015] From the above content, it can be seen that the non-polar height-adjustable track bed vibration isolator device of the present invention has the following effects:

[0016] 1. Change the existing through-type pre-embedded outer cylinder to a bottom pre-embedded flange installation method, remove the pre-embedded outer cylinder, and change it to a pre-embedded flange plate, which can greatly reduce the manufacturing cost and reduce the manufacturing difficulty of the track bed slab.

[0017] 2. Change the fully enclosed assembly method of the rubber spring to an open top and bottom enclosed assembly method, remove the height-adjusting devices with fixed thickness such as height-adjusting gaskets, and change it to a bottom-mounted grouting type non-polar height-adjusting device to achieve the height-adjusting function, improve the height-adjusting accuracy, simplify the height-adjusting construction difficulty, and reduce the height-adjusting cost.

[0018] The detailed content of the present invention can be obtained through the following description and the accompanying drawings. Description of the Drawings

[0019] Figure 1 Shows the installation schematic diagram of the non-polar height-adjustable track bed vibration isolator device of the present invention.

[0020] Figure 2A Shows the overall schematic diagram of the non-polar height-adjustable track bed vibration isolator device of the present invention.

[0021] Figure 2B Shows the front view of the non-polar height-adjustable track bed vibration isolator device of the present invention.

[0022] Figure 2C Shows the exploded schematic diagram of the non-polar height-adjustable track bed vibration isolator device of the present invention.

[0023] Figure 3 Shows the overall schematic diagram of the pre-embedded flange assembly of the present invention.

[0024] Figure 4A and Figure 4B Shows the overall schematic diagram and the exploded schematic diagram of the support plate assembly in the present invention.

[0025] Figure 5A andFigure 5B Shows the overall schematic diagram and exploded schematic diagram of the bottom plate assembly in the present utility model.

[0026] Figure 6 Shows the overall schematic diagram of the stepless height adjustment assembly in the present utility model.

[0027] Reference signs:

[0028] 101, roadbed slab; 102, steel bars; 10, stepless height adjustment roadbed vibration isolator device; 11, embedded flange assembly; 111, flange plate; 112, connecting steel bars; 113, connecting holes; 12, support plate assembly; 121, support plate; 122, flange connection holes; 123, connecting bolts; 124, upper limit boss; 125, retaining piece; 126, upper connecting rivets; 13, rubber spring; 14, bottom plate assembly; 141, bottom plate; 142, lower limit boss; 143, lower connecting rivets; 15, stepless height adjustment assembly; 151, polymer flexible outer sleeve; 152, grouting port. Detailed implementation manners

[0029] See Figures 1 to 6 , which shows the stepless height adjustment roadbed vibration isolator device of the present utility model. Among them, Figure 1 Shows the installation schematic diagram of the stepless height adjustment roadbed vibration isolator device of the present utility model. Figure 2A , Figure 2B and Figure 2C respectively show the overall schematic diagram, front view and exploded schematic diagram of the stepless height adjustment roadbed vibration isolator device of the present utility model.

[0030] As Figure 1 shown, a plurality of stepless height adjustment roadbed vibration isolator devices 10 are arranged at intervals at the bottom of the roadbed slab 101. Steel bars 102 arranged vertically and horizontally are provided in the roadbed slab 101. As Figure 2A , Figure 2B and Figure 2C shown, the stepless height adjustment roadbed vibration isolator device 10 successively includes an embedded flange assembly 11, a support plate assembly 12, a rubber spring 13, a bottom plate assembly 14 and a stepless height adjustment assembly 15 from top to bottom. At the same time, see Figure 3 , the embedded flange assembly 11 includes a disc-shaped flange plate 111 cast together with the concrete roadbed slab 101. A plurality of connecting steel bars 112 extending into the roadbed slab 101 are welded on the inner side surface (i.e., the surface buried in the roadbed slab 101) of the flange plate 111. The support plate assembly 12 is connected and fixed to the flange plate 111 and clamps and fixes the upper end of the rubber spring 13. The lower end of the rubber spring 13 is clamped and fixed to the bottom plate assembly 14. The stepless height adjustment assembly is provided below the bottom plate assembly 14.

[0031] The flange plate 111 is made of steel plate with a thickness of 8 - 20 mm. A plurality of through circular connection holes 113 are evenly distributed thereon, and the number is 3 - 6. The aperture of the connection hole 113 is used to install M12 - M20 connection bolts according to requirements. The length of the connection steel bar 112 is 60 - 150 mm, and its position corresponds to the evenly distributed connection holes 113. Threaded holes of M12 - M20 are provided at the connection positions of the connection steel bar 112 and the connection holes 113. The depth of the threaded hole is 2 - 3 times the thread diameter. The connection steel bar is used for binding and fixing with the steel bars in the track bed slab. After pouring is completed, the disc - shaped end face of the flange plate 111 is flush with the bottom surface of the track bed slab.

[0032] Thus, by changing the installation method of the existing through - type embedded outer cylinder to the bottom - embedded flange plate, the embedded outer cylinder can be removed and replaced with an embedded flange plate, so as to greatly reduce the manufacturing cost and the manufacturing difficulty of the track bed slab.

[0033] As Figure 2C shown, the fully - enclosed assembly method of the rubber spring 13 in this application is changed to an open - top - and - bottom - enclosed assembly method. The height - adjusting device with a fixed thickness such as a height - adjusting gasket is removed, and a bottom - mounted grouting - type stepless height - adjusting device is used to achieve the height - adjusting function. The specific implementation method is described as follows.

[0034] The upper end of the rubber spring 13 is provided with a support plate assembly 12 connected to the embedded flange assembly 11 through a plurality of connection bolts 123, and the lower end is provided with a bottom plate assembly 14. Also referring to Figure 4A and Figure 4B , the support plate assembly 12 includes a disc - shaped support plate 121. The support plate 121 is provided with a plurality of flange connection holes 121 corresponding to the connection holes 113. After a plurality of connection bolts 123 pass through the flange connection holes 121, the support plate assembly 12 is fixed to the embedded flange assembly 11. The lower end face of the support plate 121 is evenly provided with a plurality of upper limit bosses 124. The inner side surfaces of the plurality of upper limit bosses 124 are arc - shaped so as to wrap around the upper flange of the rubber spring 13 to limit the lateral displacement of the upper end of the rubber spring 13. Each limit boss 124 is respectively fixed with a retaining piece 125 through an upper connecting rivet 126. The inner edge of the retaining piece 125 is engaged with the lower side of the upper flange of the rubber spring 13 to limit the longitudinal displacement of the rubber spring 13. Thus, the rubber spring 13 is stably positioned relative to the support plate assembly 12 through the upper limit bosses 124 and the retaining pieces 125.

[0035] Among them, the thickness of the support plate 121 is 8 - 20 mm. It is made of metal material and has a shape of a circular flat plate structure. The height of the upper limit boss 124 is 8 - 12 mm and is welded to the support plate 121. The thickness of the retaining piece 125 is 2 - 5 mm.

[0036] Among them, the rubber spring 13 can adopt the patented product CN201220399624.1 (circular rubber spring shock absorber) authorized by the applicant before.

[0037] See also Figure 5A and Figure 5B , the bottom plate assembly 14 includes a disc-shaped bottom plate 141. On the upper end surface of the bottom plate 141, a plurality of lower limit bosses 142 are evenly installed. The inner side surfaces of the plurality of lower limit bosses 142 are arc-shaped so as to cover the lower flange of the rubber spring 13 to limit the lateral displacement of the lower end of the rubber spring 13. Each lower limit boss 142 is fixed to the bottom plate 141 through a lower connecting rivet 143. The lower connecting rivet 143 is engaged with the lower flange of the rubber spring 13 to limit the longitudinal displacement of the rubber spring 13. Thus, the rubber spring 13 is stably positioned relative to the bottom plate assembly 15 through the lower limit bosses 142 and the lower connecting rivets 143.

[0038] Among them, the thickness of the bottom plate 141 is 8-20 mm. It is made of a metal material and has a shape of a circular flat plate structure. The height of the lower limit boss 142 is 8-12 mm.

[0039] See also Figure 6 , the stepless height adjustment component 15 at the bottommost is of a bag-like structure. It includes a polymer flexible outer sleeve 151 made of a polymer flexible material. The inside of the polymer flexible outer sleeve 151 is hollow, similar to an air cushion, and is placed under the bottom plate. Its periphery is slightly larger than the bottom plate, and a grouting port 152 and an exhaust port (not shown) are provided. When the track slab is installed in place according to the elevation, there is a certain gap between the bottom plate and the ground. At this time, the stepless height adjustment component 15 is placed under the bottom plate, and grouting is carried out through the grouting port 152. The grouting volume is determined according to the size of the gap. When grouting mortar, the flexible material of the stepless height adjustment device will deform and fill the gap, forming a cushion-like structure at the bottom of the rubber spring. After the mortar solidifies and hardens, a substantial bottom support structure can be formed to achieve the height adjustment and support functions.

[0040] Thus, in this application, the pre-embedded flange replaces the pre-embedded sleeve, removes the metal parts outside the rubber spring, and uses an open (exposed) assembly; removes the fixed-thickness height adjustment method of the height adjustment gasket, and uses the grouting stepless height adjustment method to achieve the height adjustment function, improving the height adjustment accuracy, simplifying the height adjustment construction difficulty, and reducing the height adjustment cost.

[0041] It is obvious that the above description and record are only examples and not intended to limit the disclosure, application or use of the present utility model. Although the embodiments have been described in the examples and illustrated in the drawings, the present utility model does not limit to the specific examples illustrated in the drawings and described in the examples as the currently considered best mode for implementing the teachings of the present utility model. The scope of the present utility model will include any embodiments falling within the foregoing specification and the appended claims.

Claims

1. A stepless height-adjustable track bed vibration isolator device, comprising, from top to bottom, a pre-buried flange assembly, a support plate assembly, a rubber spring, a bottom plate assembly and a stepless height-adjustable assembly, characterized in that: The embedded flange assembly includes a disc-shaped flange plate cast together with the concrete ballast plate, and the inner side of the flange plate is welded with multiple connecting steel bars extending into the ballast plate. The support plate assembly is connected and fixed to the flange plate and clamps and fixes the upper end of the rubber spring. The lower end of the rubber spring is clamped and fixed to the bottom plate assembly. The stepless height adjustment assembly is provided below the bottom plate assembly. The stepless height adjustment assembly is a bag-like structure, which is hollow inside and is provided with a grouting port and an exhaust port.

2. The stepless height-adjustable track bed vibration isolator device according to claim 1, characterized in that: The stepless height adjustment component comprises a high molecular polymer flexible jacket made of high molecular flexible material.

3. The stepless height-adjustable track bed vibration isolator device according to claim 1, characterized in that: The flange plate is made of steel plate with a thickness of 8-20 mm and is evenly distributed with a plurality of through circular connecting holes. The length of the connecting steel bar is 60-150 mm and its position corresponds to the evenly distributed connecting holes. Threaded holes are provided at the connecting positions of the connecting steel bar and the connecting holes.

4. The stepless height-adjustable track bed vibration isolator device according to claim 3, characterized in that: The support plate assembly comprises a disc-shaped support plate, and the support plate is provided with a plurality of flange connection holes corresponding to the connection holes. A plurality of connection bolts penetrate through the flange connection holes to fix the support plate assembly to the embedded flange assembly.

5. The stepless height-adjustable track bed vibration isolator device according to claim 1, characterized in that: The lower end surface of the support plate is provided with a plurality of upper limit bosses evenly installed, the inner side surfaces of the plurality of upper limit bosses are arc-shaped so as to cover the upper flange of the rubber spring to limit the lateral displacement of the upper end of the rubber spring, and each limit boss is fixed with a baffle through an upper connecting rivet, and the inner edge of the baffle is engaged with the lower side of the upper flange of the rubber spring to limit the longitudinal displacement of the rubber spring.

6. The stepless height-adjustable track bed vibration isolator device according to claim 5, characterized in that: The support plate has a thickness of 8-20 mm, is made of metal material, and has a circular flat plate structure. The height of the upper limit boss is 8-12 mm, and the thickness of the baffle is 2-5 mm.

7. The stepless height-adjustable track bed vibration isolator device according to claim 1, characterized in that: The bottom plate assembly includes a disc-shaped bottom plate, and a plurality of lower limit bosses are evenly installed on the upper end surface of the bottom plate. The inner side surfaces of the plurality of lower limit bosses are arc-shaped so as to cover the lower flange of the rubber spring to limit the lateral displacement of the lower end of the rubber spring. Each lower limit boss is fixed to the bottom plate by a lower connecting rivet, and the lower connecting rivet is engaged with the lower flange of the rubber spring to limit the longitudinal displacement of the rubber spring.

8. The stepless height-adjustable track bed vibration isolator device according to claim 7, characterized in that: The thickness of the bottom plate is 8-20 mm, it is made of metal material, and has a circular flat plate structure. The height of the lower limit boss is 8-12 mm.

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