Height-adjustable steel spring vibration isolator

Abstract

The utility model relates to the field of rail transit vibration reduction, in particular to a height-adjustable steel spring vibration isolator which comprises an outer sleeve, a plurality of U-shaped bosses are arranged on the upper portion of the inner wall of the outer sleeve, and notches of the bosses are arranged in the same direction in the circumferential direction of the outer sleeve; the outer wall of the inner sleeve is provided with a plurality of convex blocks, the convex blocks are matched with the bosses in number and position, and the top of the inner sleeve is provided with a vertically-arranged screw rod; a through hole is formed in the middle of each polygonal leveling gasket; the height of the inner sleeve is adjusted by adjusting the number of the leveling gaskets between the boss of the outer sleeve and the protruding block of the inner sleeve, and the remaining leveling gaskets are clamped at the notch of the concave boss. The vibration isolator has the advantages that the height of the vibration isolator is adjustable, so that the vibration isolator adapts to different mounting environments and requirements; the gasket and the inner sleeve are integrally designed, friction and looseness between parts are reduced, the vibration isolation effect is improved, and the service life is prolonged; the maintenance requirement is low, and the frequency and cost of maintenance and replacement are reduced.

Description

Technical Field

[0001] The utility model relates to the field of rail transit vibration reduction, in particular to a steel spring vibration isolator with adjustable height. Background Art

[0002] The steel spring floating plate ballast is a widely used ballast form in the field of railway traffic engineering technology, with excellent vibration reduction effect. As one of the core components, the steel spring isolator plays a vital role in ensuring the smooth operation of the track system and reducing the vibration interference to the surrounding environment. Its specific composition structure includes an outer sleeve, an inner sleeve, a leveling steel plate gasket and a locking system; the outer sleeve is located between the two sleepers to transfer the load on the track plate; the inner sleeve is the core component, which is used to absorb and buffer the vibration of the train; the leveling steel plate gasket is used to adjust the height of the steel spring floating plate; the locking system is used to fix the track plate and the isolator to prevent relative movement. At present, manual operation is mainly used for the placement or replacement of the leveling steel plate, which consumes a lot of time and manpower, affecting the progress and efficiency of the project. At the same time, due to the large number of gasket types and quantities, it is easy to lose and waste materials. If the height of the gasket is not adjusted accurately, it may cause uneven gaps between the ballast plate and the foundation cushion layer, which in turn affects the normal operation of the steel spring isolator. In addition, there are certain safety hazards in manually adjusting the height of the gasket, which may cause harm to construction workers. Utility Model Content

[0003] The utility model aims to solve the problems of mechanical repetition of operation procedures, easy loss of gaskets and impact on the safety of operators when manually adjusting the height of a steel spring isolator using a leveling steel plate gasket during the use of a steel spring floating plate ballast, and to provide a height-adjustable steel spring isolator to simplify the structure, avoid wasting materials and controllably adjust the height of the steel spring floating plate ballast.

[0004] In order to achieve the above-mentioned purpose, a height-adjustable steel spring vibration isolator is designed, comprising: an outer sleeve, a plurality of concave bosses are provided on the upper part of the inner wall of the outer sleeve, and the recesses of the plurality of concave bosses are arranged in the same direction clockwise or counterclockwise along the circumferential direction of the outer sleeve; an inner sleeve, a plurality of protrusions are provided on the outer wall of the inner sleeve, and the plurality of protrusions match the number and position of the plurality of protrusions of the outer sleeve, and a vertically arranged screw is provided on the top of the inner sleeve; a plurality of stacked leveling gaskets, the leveling gaskets are polygonal, and a through hole is provided in the middle of each leveling gasket for passing the screw of the inner sleeve; the height of the inner sleeve is adjusted by adjusting the number of leveling gaskets between the outer sleeve bosses and the inner sleeve protrusions, and the remaining leveling gaskets are clamped in the recesses of the concave bosses.

[0005] Preferably, the bottom of the inner sleeve of the utility model is open, an elastic body is provided in the cavity of the inner sleeve, and after the inner sleeve is installed in the outer sleeve, the elastic body contacts the bottom of the outer sleeve.

[0006] Preferably, the inner sleeve of the utility model rotates so that the inner sleeve protrusion and the outer sleeve boss avoid each other. After the inner sleeve is installed into the outer sleeve, the inner sleeve is rotated so that the inner sleeve protrusion is located below the outer sleeve boss.

[0007] Preferably, the number of sides of the polygonal leveling gasket of the utility model matches the number of bosses of the outer sleeve.

[0008] Preferably, the utility model also includes a leveling chuck, the inner wall of the leveling chuck is provided with a thread for connecting the screw, and the outer wall of the leveling chuck is provided with a plurality of claws on the circumferential side, the through hole of the leveling gasket is large enough to pass through the leveling chuck, and the circumferential side of the through hole of the leveling gasket is provided with a notch that matches the claws of the leveling chuck.

[0009] Compared with the prior art, the utility model has the following advantages:

[0010] 1. The vibration isolator is highly adjustable and flexible, and can adapt to different installation environments and requirements.

[0011] 2. The integrated design of the gasket and the inner sleeve makes the vibration isolator more compact and stable in structure, reduces the friction and looseness between the components, and thus improves the vibration isolation effect and service life.

[0012] 3. The steel spring is used as the vibration isolation element, which makes the vibration isolator have a higher load-bearing capacity and good elasticity. The steel spring has good durability and stability, and can maintain consistent vibration isolation performance during long-term use.

[0013] 4. Low maintenance requirements. Once installed, it can operate stably for a long time, reducing the frequency and cost of maintenance and replacement. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is an exploded view of the structure of the utility model;

[0015] Figure 2 It is a schematic diagram of the steel spring floating slab track bed structure;

[0016] Figure 3A 2. It is a schematic diagram of the outer sleeve structure;

[0017] Figure 3B is a schematic diagram of the inner sleeve structure;

[0018] Figure 3C 1. It is a schematic diagram of the structure of the leveling chuck;

[0019] Figure 3DSchematic diagram of the structure of the leveling gasket;

[0020] Figure 4 It is the force analysis diagram of the utility model device;

[0021] Figure 5 This is a working state diagram of the utility model device;

[0022] In the figure: 1. outer sleeve; 11. boss; 2. inner sleeve; 21. steel spring and damper; 22. screw; 3. leveling chuck; 31. internal thread; 32. claw; 4. leveling gasket; 41. notch; 5 connecting floating plate; 51. rail; 52. vibration isolator. DETAILED DESCRIPTION

[0023] The utility model is further described below in conjunction with specific embodiments.

[0024] Embodiment 1:

[0025] like Figure 1 As shown, the utility model provides a steel spring vibration isolator with adjustable height, comprising: an outer sleeve 1, an inner sleeve 2, a leveling chuck 3, and a leveling gasket 4.

[0026] like Figure 2 , Figure 3A As shown, the outer sleeve 1 is a cylindrical body, which is cast in the floating slab concrete and is a transmission device for the vibration force of the rail 51 between the floating slab 5 and the inner sleeve of the vibration isolator 52. It has the function of connecting the floating slab 5 and the inner sleeve 2 of the vibration isolator and ensuring the force transmission between the two. A boss 11 is opened on the inner wall of the outer sleeve 1, which contacts the leveling gasket 4 to form a contact surface of the elastic force of the steel spring vibration isolator.

[0027] like Figure 3B As shown, the inner sleeve 2 mainly includes a steel spring and a damper 21 to realize the function of a vibration isolator. A screw 22 is inherently provided on the top surface of the inner sleeve, which is connected to the internal thread 31 of the leveling chuck.

[0028] like Figure 3C As shown, the leveling chuck 3 is a cylindrical body with an internal thread 31, which is connected to the screw rod 22 of the inner sleeve. The bottom of the cylindrical body has three circular claws 32, which contact the circular notch 41 inside the leveling gasket to realize the rotation of the leveling gasket 4.

[0029] like Figure 3DAs shown, the leveling gasket 4 is a triangular metal plate with a certain rigidity and thickness, with a circular slot 41 inside, which is nested on the cylindrical body of the leveling chuck. There are 7 leveling gaskets in total, with thicknesses of 20mm, 5mm, 5mm, 3mm, 3mm, 2mm, and 2mm respectively. They are placed from bottom to top, and the thickness becomes thinner in sequence. Therefore, the adjustable height of the entire steel spring isolator is 0~40mm.

[0030] like Figure 4 As shown, the working principle of a height-adjustable steel spring vibration isolator is that the number of leveling washers 4 between the inner wall boss 11 of the outer sleeve and the upper top surface of the inner sleeve 2 is adjusted by the leveling chuck 3 to control the gap distance between the inner wall boss 11 of the outer sleeve and the upper top surface of the inner sleeve 2, thereby changing the height. At the same time, the leveling washers 4 have an elastic force F that supports the inner wall boss 11 of the outer sleeve upward, thereby achieving the height adjustment of the steel spring vibration isolator.

[0031] like Figure 5 As shown, a method for using a height-adjustable steel spring vibration isolator is as follows: in an initial state, the leveling gasket 4 is located inside the inner wall boss 11 of the outer sleeve, Figure 5 Select the target height leveling pad, use the leveling chuck 3 to insert the circular claw 32 into the circular groove 41, rotate the leveling chuck 3, and move the target pad from Figure 5 The original point a in the middle rotates to the separation point b, and the triangular part of the target gasket is misaligned with the inner wall boss 11 of the outer sleeve, and falls off from the inner wall boss 11 of the outer sleeve; at the same time, there is a downward force when the leveling chuck 3 is rotated downward, the steel spring is in a compressed state, the gap between the inner wall boss 11 of the outer sleeve and the upper top surface of the inner sleeve 2 increases, and the target gasket falls off into the gap between the two; when the target gasket enters the gap between the inner wall boss 11 of the outer sleeve and the upper top surface of the inner sleeve 2, the leveling chuck 3 is used to rotate the gasket to Figure 5 The middle working point is c, so that the triangular part of the target gasket is aligned with the inner wall boss 11 of the outer sleeve; when the leveling chuck 3 is rotated upward, the steel spring recovers the deformation, the inner sleeve 2 moves upward, the gap between the inner wall boss 11 of the outer sleeve and the upper top surface of the inner sleeve 2 is reduced, and the target gasket contacts the lower bottom surface of the inner wall boss 11 of the outer sleeve to form the contact surface of the elastic force of the steel spring vibration isolator, and finally completes the adjustment of the relative height between the inner wall boss 11 of the outer sleeve and the upper top surface of the inner sleeve 2.

[0032] The above is only a specific implementation method of this utility model, but the protection scope of the utility model is not limited thereto. Any technician familiar with the technical field within the technical scope disclosed by the utility model, according to the technical solution and new concept of the utility model, shall be covered by the protection scope of the utility model.

Claims

1. A height-adjustable steel spring isolator, characterized in that include An outer sleeve, wherein a plurality of concave bosses are provided on the upper portion of the inner wall of the outer sleeve, and the notches of the plurality of concave bosses are arranged in the same direction clockwise or counterclockwise along the circumferential direction of the outer sleeve; An inner sleeve, wherein the outer wall of the inner sleeve is provided with a plurality of protrusions, the plurality of protrusions match the number and position of the plurality of bosses of the outer sleeve, and the top of the inner sleeve is provided with a vertically arranged screw; A plurality of stacked leveling washers, each of which is polygonal in shape, and each of which has a through hole in the middle for passing the screw of the inner sleeve; The height of the inner sleeve is adjusted by adjusting the number of leveling washers between the outer sleeve boss and the inner sleeve convex block, and the remaining leveling washers are clamped in the notch of the concave boss.

2. A height-adjustable steel spring isolator as claimed in claim 1, characterized in that The bottom of the inner sleeve is open, and an elastic body is arranged in the cavity of the inner sleeve. After the inner sleeve is installed in the outer sleeve, the elastic body contacts the bottom of the outer sleeve.

3. A height-adjustable steel spring isolator as claimed in claim 1, characterized in that The inner sleeve rotates so that the inner sleeve convex block and the outer sleeve convex platform avoid each other. After the inner sleeve is installed into the outer sleeve, the inner sleeve is rotated so that the inner sleeve convex block is located below the outer sleeve convex platform.

4. A height-adjustable steel spring isolator as claimed in claim 1, characterized in that The number of sides of the polygonal leveling gasket matches the number of the outer sleeve bosses.

5. A height-adjustable steel spring isolator as claimed in claim 1, characterized in that It also includes a leveling chuck, the inner wall of which is provided with threads for connecting the screw rod, and the outer wall of the leveling chuck is provided with a plurality of claws on the circumference, the through hole of the leveling gasket is large enough to pass through the leveling chuck, and the circumference of the through hole of the leveling gasket is provided with notches that match the claws of the leveling chuck.

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