A rail transit height adjustment vibration reduction bearing and use method thereof

Abstract

The present invention provides a rail transit height adjustment vibration reduction bearing and a use method thereof, which relates to the field of rail transit technology, and comprises a base assembly, a support assembly, a stud assembly, a nut, a locking eccentric nut, a sleeve assembly and a top seat assembly; the upper end of the base assembly is connected to the support assembly; the upper end of the support assembly is connected to the stud assembly; the nut is connected to the outside of the stud assembly; the locking eccentric nut is arranged on the outside of the stud assembly, at the upper end of the nut; the sleeve assembly is arranged on the upper end of the base assembly, on the outside of the stud assembly, the nut, and the locking eccentric nut; the top seat assembly is arranged at the upper end of the sleeve assembly.

Description

Technical Field

[0001] The present invention relates to the technical field of rail transit, and in particular to a rail transit height-adjusting vibration-damping bearing and a use method thereof. Background Art

[0002] With the development of my country's economy and the acceleration of urbanization, the size of urban population has shown explosive growth. In order to alleviate the traffic congestion caused by population growth, my country's urban rail transit industry has developed rapidly. The subway has become one of the key options for alleviating urban traffic congestion with its many advantages such as speed, safety, convenience and punctuality. The vibration and noise generated by the subway operation have a great impact on the surrounding environment, the daily life of surrounding residents and the riding experience of passengers. What's more, it has become one of the unsafe factors of urban buildings. Traditional rail transit vibration reduction technologies include rubber spring floating plates and steel spring floating plates. The dynamic loads generated by vehicle operation are offset by elastic elements such as rubber springs or steel springs, thereby achieving vibration reduction and noise reduction. However, both rubber spring floating plates and steel spring floating plates require special lifting equipment for lifting, which is complicated to operate and inefficient. In order to ensure the safety of subway operation during operation, the height of the subway line needs to be adjusted according to actual conditions. Rubber spring floating plates or steel spring floating plates can only adjust the line height by adding height adjustment pads or through traditional fastener systems. However, this method has limited adjustment capacity and low adjustment efficiency, and cannot meet the requirements of rapid adjustment in time. Summary of the invention

[0003] The invention provides a rail transit height-adjusting vibration-damping support and a use method thereof, which utilizes the transmission characteristics of a thread to adjust the line height, thereby solving the current problems of great difficulty and long construction period in adjusting the line height.

[0004] Implementation of the present invention:

[0005] A rail transit height adjustment and vibration reduction bearing, comprising a base assembly, a bearing assembly, a stud assembly, a nut, a locking eccentric nut, a sleeve assembly and a top seat assembly; the upper end of the base assembly is connected to the bearing assembly; the upper end of the bearing assembly is connected to the stud assembly; the nut is connected to the outside of the stud assembly; the locking eccentric nut is arranged on the outside of the stud assembly, at the upper end of the nut; the sleeve assembly is arranged on the upper end of the base assembly, on the outside of the stud assembly, the nut, and the locking eccentric nut; the top seat assembly is arranged at the upper end of the sleeve assembly.

[0006] Furthermore, the base assembly includes a bottom plate and connecting columns; a plurality of connecting columns are provided at the lower end of the bottom plate; and a pad is provided at the lower end of the connecting column.

[0007] Furthermore, the support assembly includes an upper seat plate, a support and a lower seat plate; the upper seat plate is provided at the upper end of the support; and the lower seat plate is provided at the lower end of the support.

[0008] Furthermore, the stud assembly includes a stud and a seat plate; the outer wall of the stud is provided with a first thread; and a dustproof pad is provided between the stud assembly and the support assembly.

[0009] Furthermore, the inner wall of the nut is provided with a second thread matching the first thread; the upper part of the nut is provided with a step; the step is conical; the side wall of the step is provided with a plurality of spring pin mounting holes; the lower end surface of the step is provided with a plurality of first notches for rotating the nut; a spring pin is installed in the spring pin mounting hole; a spring is provided inside the spring pin mounting hole; the spring is plug-fitted with one end of the spring pin; the other end of the spring pin is an arc surface.

[0010] Furthermore, a locking groove corresponding to the spring pin mounting hole is provided at the lower part of the locking eccentric nut; a plurality of second notches for rotating the locking eccentric nut are provided at the upper end of the locking eccentric nut; a third thread matching the first thread is provided on the inner wall of the locking eccentric nut; the lower part of the locking eccentric nut is conical; the central axis of the third thread does not coincide with the central axis of the cone of the lower part of the locking eccentric nut.

[0011] Furthermore, the sleeve assembly includes a cylinder body, anchor bars, columns and support plates; a plurality of anchor bars are provided on the outer wall of the cylinder body; a plurality of columns are provided on the outer wall of the cylinder body; a plurality of support plates are provided on the lower part of the inner wall of the cylinder body; a copper pad is provided on the upper end of the support plate; the nut is placed on the upper end of the copper pad; a rubber pad is provided between the cylinder body and the base assembly.

[0012] Furthermore, the top seat assembly includes a branch pipe and a top cover; a top cover is provided at the upper end of the branch pipe; a dust cover is provided at the upper end of the top seat assembly; a plurality of dust sleeves are provided at the upper end of the dust cover; a plurality of dust covers are provided at the upper end of the dust cover; a clamping column is provided at the lower end of the dust cover; and a lug is provided on the outer side of the clamping column.

[0013] The tool used to operate the rail transit height-adjusting vibration-damping bearing comprises a sleeve and a wrench; the wrench is arranged at the upper end of the sleeve; the lower end of the sleeve is provided with a plurality of claws for cooperating with the first notch and the second notch; the right side of the claw is provided with a first step; the left side of the claw is provided with a second step; the height of the first step is greater than the height of the second step.

[0014] The method for using the rail transit height adjustment vibration reduction bearing comprises the following steps:

[0015] Step 1: The height-adjustable vibration-damping support is placed in the initial state, that is, the sleeve assembly is pressed against the dust pad by rotating the nut to achieve a seal between the sleeve assembly and the base assembly, the eccentric nut is tightened to a tight state, and the dust cover is installed to achieve a top seal, so that the height-adjustable vibration-damping support is in an integral packaging state;

[0016] Step 2: Arrange several height-adjustable vibration-damping supports symmetrically in the steel mesh of the floating slab, so that the base assembly is exposed outside, fix the anchor bars on the sleeve assembly to the steel mesh of the floating slab, pour concrete after the formwork is erected, and perform curing. After the curing is completed, an isolation membrane is attached to the lower surface of the floating slab and around the base assembly to complete the prefabrication of the floating slab;

[0017] Step 3: Place the prefabricated floating plate on the upper surface of the base, and adjust the position of the floating plate so that the base assembly falls into the reserved notch on the base;

[0018] Step 4: Pour non-shrinkage epoxy resin mortar into the reserved notch and tamp it, pour the base assembly and the base together, and then cure it;

[0019] Step 5: Remove the dust cover, pass the tool sleeve through the top seat assembly, insert the tooth claw into the second notch of the locking eccentric nut, turn the wrench to drive the locking eccentric nut to rotate on the stud, and completely separate the conical surface of the lower part of the locking eccentric nut from the step of the nut;

[0020] Step 6: Slightly turn the wrench to make the claw pass through the second notch and insert into the first notch of the nut. Turn the wrench to drive the nut and the locking eccentric nut to rotate upward on the stud, push the top seat assembly upward, thereby driving the sleeve assembly to rise and adjust the height of the floating plate.

[0021] Step 7: Move the tool upwards so that the tooth claw comes out of the first notch and is only inserted into the second notch of the locking eccentric nut. Turn the wrench to move the locking eccentric nut downwards. When the locking groove is aligned with the spring pin mounting hole, the spring pin in the spring pin mounting hole pops out under the action of the spring. The arc surface of the spring pin presses against the locking groove (51), and the conical surface at the bottom of the locking eccentric nut is squeezed and clamped with the step of the nut, thereby realizing a double locking function.

[0022] Step 8: Install the dust cover;

[0023] Step 9: Lay the rail system on the floating slab.

[0024] Beneficial effects of the present invention:

[0025] (1) The present invention adopts an integral packaging technology, which can be pre-installed with the floating plate as a whole. The construction of the floating plate can be completed by paving, pouring, and jacking, thereby improving the construction efficiency and being able to evenly apply the output force to the floating plate;

[0026] (2) Through the threaded transmission of the stud assembly and the nut, the height of the floating plate can be adjusted with high precision, large range and rapidity;

[0027] (3) The height-adjustable vibration-damping support forms two sealed cavities by providing a dust cover, a dust pad and a rubber pad, which prevents concrete from entering the cavity when the floating plate is poured, and prevents dust and other debris from entering the cavity of the threaded engagement during normal use to affect the transmission efficiency, and provides a convenient channel for height-adjusting operation, that is, the height-adjusting operation can be performed by directly opening the dust cover;

[0028] (4) The present invention achieves vibration reduction by having a support assembly with low natural frequency and adjustable stiffness, and has a good vibration reduction effect;

[0029] (5) The present invention is provided with a locking system; a locking eccentric nut is provided to lock the nut to achieve a first level of locking, and a spring pin is provided to perform a second level of locking on the nut;

[0030] (6) The base assembly of the present invention is cast together with the base to prevent the floating plate from slipping due to the violent vibration generated when the subway passes through a curve;

[0031] (7) The present invention adopts a dedicated integrated adjustment interface, and a dedicated tool is inserted and matched with the first notch of the nut and the second notch of the locking eccentric nut to achieve the adjustment and anti-loosening of the nut height, thereby quickly completing the adjustment of the floating plate height;

[0032] (8) The present invention adopts an inverted top seat assembly structure, which is easy to maintain. By removing the top seat assembly, each internal component can be quickly disassembled, inspected and replaced. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] Figure 1 Schematic diagram of raising the vibration reduction bearing for rail transit;

[0034] Figure 2 is a schematic diagram of the base assembly;

[0035] Figure 3 is a schematic diagram of the support assembly;

[0036] Figure 4 is a schematic diagram of a stud assembly;

[0037] Figure 5 It is a schematic diagram of a nut;

[0038] Figure 6 is a schematic diagram of a spring pin;

[0039] Figure 7 It is a schematic diagram of locking the eccentric nut;

[0040] Figure 8 is a schematic diagram of a sleeve assembly;

[0041] Fig. 9 is a schematic diagram of the top seat assembly;

[0042] Fig.10 It is a partial enlarged view of part A;

[0043] Fig.11 This is a partial enlarged view of part B;

[0044] Fig.12 It is a partial enlarged view of part C;

[0045] Fig.13 This is a schematic diagram of the dustproof pad;

[0046] Fig.14 It is a cross-sectional view of the dust cover;

[0047] Fig.15 This is a schematic diagram of the dust cover being opened;

[0048] Fig.16 is a first stereogram of the dust cover;

[0049] Fig.17 is a second stereoscopic view of the dust cover;

[0050] Fig.18 A schematic diagram of the tool;

[0051] Fig.19 Schematic diagram of installation of vibration reduction bearing for rail transit;

[0052] Fig. 20 Schematic diagram of the vibration reduction bearing before lifting for rail transit;

[0053] Fig.21 Schematic diagram of the rail transit height-adjusting vibration-damping bearing after jacking up;

[0054] In the figure, 1 base assembly, 11 bottom plate, 12 connecting column, 13 pad, 2 support assembly, 21 upper seat plate, 22 support, 23 lower seat plate, 3 stud assembly, 31 stud, 311 first thread, 32 seat plate, 33 dust pad, 4 nut, 41 second thread, 42 step, 43 spring pin mounting hole, 431 spring pin, 432 spring, 44 first notch, 5 locking eccentric nut, 51 locking groove, 52 second Notch, 53 third thread, 6 sleeve assembly, 61 cylinder, 62 anchor bar, 63 column, 64 support plate, 65 copper pad, 66 rubber pad, 7 top seat assembly, 71 branch pipe, 72 top cover, 8 dust cover, 81 dust sleeve, 82 dust cover, 83 column, 84 lug, 9 floating plate, 91 base, 911 reserved notch, 101 sleeve, 102 wrench, 103 claw, 104 first step, 105 second step. DETAILED DESCRIPTION

[0055] The present invention will be further described below by means of specific examples.

[0056] Example 1

[0057] This embodiment provides a rail transit height adjustment vibration reduction support. Figures 1 to 17 , including a base assembly 1, a support assembly 2, a stud assembly 3, a nut 4, a locking eccentric nut 5, a sleeve assembly 6 and a top seat assembly 7; the upper end of the base assembly 1 is connected to the support assembly 2; the upper end of the support assembly 2 is connected to the stud assembly 3; the nut 4 is connected to the outside of the stud assembly 3; the locking eccentric nut 5 is arranged on the outside of the stud assembly 3, at the upper end of the nut 4; the sleeve assembly 6 is arranged at the upper end of the base assembly 1, outside the stud assembly 3, the nut 4, and the locking eccentric nut 5; the top seat assembly 7 is arranged at the upper end of the sleeve assembly 6.

[0058] Preferably, the base assembly 1 comprises a bottom plate 11 and connecting columns 12 ; three connecting columns 12 are evenly distributed at the lower end of the bottom plate 11 ; and a pad 13 is provided at the lower end of the connecting column 12 .

[0059] Preferably, the support assembly 2 includes an upper seat plate 21, a support 22 and a lower seat plate 23; the upper seat plate 21 is provided at the upper end of the support 22; the lower seat plate 23 is provided at the lower end of the support 22; the lower seat plate 23 is connected to the base plate 11 by bolts.

[0060] Preferably, the stud assembly 3 includes a stud 31 and a seat plate 32; the outer wall of the stud 31 is provided with a first thread 311; a dustproof pad 33 is provided between the stud assembly 3 and the support assembly 2 to prevent dust from entering the cavity formed by the stud assembly 3 and the dust cover 8 and play a sealing role; the seat plate 32 is connected to the upper seat plate 21 by bolts.

[0061] Preferably, the inner wall of the nut 4 is provided with a second thread 41 matching the first thread 311; the upper part of the nut 4 is provided with a step 42; the step 42 is conical; the side wall of the step 42 is evenly provided with a plurality of spring pin mounting holes 43; the lower end surface of the step 42 is evenly provided with three first notches 44 for rotating the nut 4; a spring pin 431 is installed in the spring pin mounting hole 43; a spring 432 is provided inside the spring pin mounting hole 43; the spring 432 is plugged into and matched with one end of the spring pin 431; the other end of the spring pin 431 is an arc surface.

[0062] Preferably, a locking groove 51 corresponding to the spring pin mounting hole 43 is provided at the lower part of the locking eccentric nut 5; the lower part of the locking eccentric nut 5 is conical; three second notches 52 for rotating the locking eccentric nut 5 are evenly distributed at the upper end of the locking eccentric nut 5; a third thread 53 matching the first thread 311 is provided on the inner wall of the locking eccentric nut 5; the central axis of the third thread 53 does not coincide with the central axis of the cone at the lower part of the locking eccentric nut 5, so that the locking eccentric nut 5 has a locking effect on the nut 4.

[0063] Preferably, the sleeve assembly 6 includes a cylinder 61, anchor bars 62, columns 63 and support plates 64; three anchor bars 62 are evenly distributed on the outer wall of the cylinder 61; three columns 63 are evenly distributed on the outer wall of the cylinder 61; three support plates 64 are evenly distributed on the lower part of the inner wall of the cylinder 61; a copper pad 65 is provided on the upper end of the support plate 64; the nut 4 is placed on the upper end of the copper pad 65; a rubber pad 66 is provided between the cylinder 61 and the base assembly 1 for sealing.

[0064] Preferably, the top seat assembly 7 includes a branch pipe 71 and a top cover 72; the top cover 7 is provided at the upper end of the branch pipe 71, and the branch pipe 71 and the top cover 72 are connected in the middle; the top cover 72 is connected to the column 63 by bolts; the upper end of the top seat assembly 7 is connected to a dust cover 8 by bolts; three dust covers 81 are provided at the upper end of the dust cover 8 to cover the bolts connecting the top cover 72 and the column 63 to prevent dust from entering; a dust cover 82 is provided at the upper end of the dust cover 8, and one end of the dust cover 82 can be lifted up to see Fig.15 , used to cover the bolts connecting the top seat assembly 7 and the dust cover 8; the dust cover 8 is provided with a clamping column 83 at the lower end, and a lug 84 is provided on the outer side of the clamping column 83 to enable the dust cover 8 to be clamped in the through hole in the middle of the top cover 72.

[0065] Example 2

[0066] This embodiment provides a tool for operating the rail transit height adjustment vibration reduction support described in Embodiment 1. Fig.18 .

[0067] The tool comprises a sleeve 101 and a wrench 102; the wrench 102 is arranged at the upper end of the sleeve 101; three tooth claws 103 for cooperating with the first notch 44 and the second notch 52 are evenly distributed at the lower end of the sleeve 101; a first step 104 is arranged on the right side of the tooth claw 103; a second step 105 is arranged on the left side of the tooth claw 103; the height of the first step 104 is greater than the height of the second step 105 and the height of the first step 104 is less than the height of the locking eccentric nut 5.

[0068] Example 3

[0069] This embodiment provides a method for using the rail transit height adjustment vibration reduction bearing described in Embodiment 1, comprising the following steps:

[0070] Step 1: The height-adjustable vibration-damping support is placed in an initial state, that is, the sleeve assembly 6 is made to squeeze the rubber pad 66 by rotating the nut 4 to prevent the mortar from entering the sleeve assembly 6 when pouring the non-shrinkage epoxy resin mortar, so as to achieve a seal between the sleeve assembly 6 and the base assembly 1, and the eccentric nut 5 is tightened to a screwed state, and the dust cover 8 is installed to achieve a top seal, so that the height-adjustable vibration-damping support is in an integral packaging state;

[0071] Step 2: symmetrically arrange a number of height-adjustable vibration-damping supports in the steel mesh of the floating plate 9, so that the base assembly 1 is exposed outside, and the anchor bars 62 on the sleeve assembly 6 are fixedly connected to the steel mesh of the floating plate 9. After the formwork is erected, concrete is poured and cured. After the curing is completed, an isolation film is pasted on the lower surface of the floating plate 9 and around the base assembly 1 to complete the prefabrication of the floating plate 9. The isolation film is a polyethylene film.

[0072] Step 3: Place the prefabricated floating plate 9 on the upper surface of the base 91, and adjust the position of the floating plate 9 so that the base assembly 1 falls into the reserved notch 911 on the base 91. Fig.19 ;

[0073] Step 4: pour non-shrinkage epoxy resin mortar into the reserved notch 911 and tamp it down, pour the base assembly 1 and the base 91 together, and then perform curing;

[0074] Step 5: Remove the dust cover 8, pass the tool sleeve 101 through the top seat assembly 7, insert the tooth claw 103 into the second notch 52 of the locking eccentric nut 5, and make the first step 104 stuck on one side of the second notch 52, rotate the wrench 102 counterclockwise to drive the locking eccentric nut 5 to rotate upward on the stud 31, so that the conical surface at the bottom of the locking eccentric nut 5 is completely separated from the step 42 of the nut 4;

[0075] Step 6: Slightly rotate the wrench 102 clockwise to drive the locking eccentric nut 5 to rotate downward slowly, and apply downward pressure to the tool at the same time. When the lower end of the claw 103 passes through the first notch 44, the tool moves downward to make the claw 103 pass through the second notch 52 and be inserted into the first notch 44 of the nut 4. Then, rotate the wrench 102 counterclockwise to drive the nut 4 and the locking eccentric nut 5 to rotate upward on the stud 31, push the top seat assembly 7 to move upward, thereby driving the sleeve assembly 6 to rise, and adjusting the height of the floating plate 9;

[0076] Step 7: Move the tool upward to make the tooth claw 103 come out of the first notch 44, and the second step 105 is stuck on the other side of the second notch 52. At this time, the tooth claw 10 is only inserted into the second notch 52 of the locking eccentric nut 5; turn the wrench 102 clockwise to move the locking eccentric nut 5 downward, and when the locking groove 51 is aligned with the spring pin mounting hole 43, the spring pin 431 in the spring pin mounting hole 43 pops out under the action of the spring 432, and the arc surface of the spring pin 431 presses against the locking groove 51, and the conical surface at the bottom of the locking eccentric nut 5 can be squeezed and clamped with the step 42 of the nut 4 due to the eccentricity, so as to realize the double locking function;

[0077] Step 8: Finally install the dust cover 8, see Fig.21 ;

[0078] Step 9: Laying the rail system on the floating slab 9.

[0079] The above contents are further detailed descriptions of the present invention in combination with specific preferred embodiments, and the specific implementation of the present invention cannot be limited to these descriptions. For ordinary technicians in the field to which the present invention belongs, several simple deductions or substitutions can be made without departing from the concept of the present invention, which should be regarded as falling within the protection scope of the present invention.

Claims

1. A rail transit height adjustment vibration reduction bearing, characterized in that: It comprises a base assembly (1), a support assembly (2), a stud assembly (3), a nut (4), a locking eccentric nut (5), a sleeve assembly (6) and a top seat assembly (7); The upper end of the base assembly (1) is connected to the support assembly (2); The upper end of the support assembly (2) is connected to the stud assembly (3); The nut (4) is connected to the outside of the stud assembly (3); The locking eccentric nut (5) is arranged on the outside of the stud assembly (3) and on the upper end of the nut (4); The sleeve assembly (6) is arranged at the upper end of the base assembly (1), outside the stud assembly (3), the nut (4), and the locking eccentric nut (5); The top seat assembly (7) is arranged at the upper end of the sleeve assembly (6); The stud assembly (3) comprises a stud (31) and a seat plate (32); The sleeve assembly (6) comprises a cylinder (61), anchor bars (62), a column (63) and a support plate (64); The outer wall of the cylinder (61) is provided with a plurality of anchor bars (62); The outer wall of the cylinder (61) is provided with a plurality of columns (63); A plurality of support plates (64) are provided at the lower portion of the inner wall of the cylinder (61); The top seat assembly (7) comprises a branch pipe (71) and a top cover (72); A top cover (72) is provided at the upper end of the branch pipe (71); The top cover (72) is connected to the column (63) via bolts; The nut (4) and the locking eccentric nut (5) rotate upward on the stud (31), pushing the top seat assembly (7) to move upward, thereby driving the sleeve assembly (6) to rise.

2. The rail transit height adjustment vibration reduction bearing according to claim 1, characterized in that: The base assembly (1) comprises a base plate (11) and a connecting column (12); A plurality of connecting columns (12) are provided at the lower end of the bottom plate (11); A pad (13) is provided at the lower end of the connecting column (12).

3. The rail transit height adjustment vibration reduction support according to claim 2 is characterized in that: The support assembly (2) comprises an upper seat plate (21), a support (22) and a lower seat plate (23); An upper seat plate (21) is provided at the upper end of the support (22); A lower seat plate (23) is provided at the lower end of the support (22).

4. The rail transit height adjustment vibration reduction support according to claim 3 is characterized in that: The outer wall of the stud (31) is provided with a first thread (311); A dustproof pad (33) is provided between the stud assembly (3) and the support assembly (2).

5. The rail transit height adjustment vibration reduction support according to claim 4 is characterized in that: The inner wall of the nut (4) is provided with a second thread (41) matching the first thread (311); The nut (4) is provided with a step (42) on its upper portion; The step (42) is conical; The side wall of the step (42) is provided with a plurality of spring pin mounting holes (43); The lower end surface of the step (42) is provided with a plurality of first notches (44) for rotating the nut (4); A spring pin (431) is installed in the spring pin installation hole (43); A spring (432) is provided inside the spring pin mounting hole (43); The spring (432) is plug-fitted into one end of the spring pin (431); The other end of the spring pin (431) is an arc surface.

6. The rail transit height adjustment vibration reduction support according to claim 5, characterized in that: The locking eccentric nut (5) has a locking groove (51) at the bottom thereof corresponding to the spring pin mounting hole (43); The upper end of the locking eccentric nut (5) is provided with a plurality of second notches (52) for rotating the locking eccentric nut (5); The inner wall of the locking eccentric nut (5) is provided with a third thread (53) matching the first thread (311); The lower part of the locking eccentric nut (5) is conical; The central axis of the third thread (53) does not coincide with the central axis of the lower cone of the locking eccentric nut (5).

7. The rail transit height adjustment vibration reduction support according to claim 6, characterized in that: A copper pad (65) is provided at the upper end of the support plate (64); The nut (4) is placed on the upper end of the copper washer (65); A rubber pad (66) is provided between the cylinder (61) and the base assembly (1).

8. The rail transit height adjustment vibration reduction support according to claim 7, characterized in that: A dust cover (8) is provided at the upper end of the top seat assembly (7); A plurality of dust covers (81) are provided at the upper end of the dust cover (8); A plurality of dust covers (82) are provided at the upper end of the dust cover (8); A clamping column (83) is provided at the lower end of the dust cover (8); A lug (84) is provided on the outer side of the clamping column (83).

9. The method for using the rail transit height adjustment vibration reduction bearing as claimed in claim 8, comprising a tool for operating the rail transit height adjustment vibration reduction bearing, the tool comprising a sleeve (101) and a wrench (102), the wrench (102) being arranged at the upper end of the sleeve (101), the lower end of the sleeve (101) being provided with a plurality of tooth claws (103) for cooperating with the first notch (44) and the second notch (52), the right side of the tooth claw (103) being provided with a first step (104), the left side of the tooth claw (103) being provided with a second step (105), the height of the first step (104) being greater than the height of the second step (105), and characterized in that: The method of use comprises the following steps: Step 1: The height-adjustable vibration-damping support is placed in an initial state, that is, the sleeve assembly (6) is pressed against the dust-proof pad (33) by rotating the nut (4) to achieve a seal between the sleeve assembly (6) and the base assembly (1), the eccentric nut (5) is tightened to a tight state, and the dust-proof cover (8) is installed to achieve a top seal, so that the height-adjustable vibration-damping support is in an integral packaging state; Step 2: symmetrically arrange a plurality of height-adjustable vibration-damping supports in the steel mesh of the floating plate (9) so that the base assembly (1) is exposed outside, and the anchor bars (62) on the sleeve assembly (6) are fixedly connected to the steel mesh of the floating plate (9). After the formwork is erected, concrete is poured and cured. After the curing is completed, an isolation film is attached to the lower surface of the floating plate (9) and the periphery of the base assembly (1), thereby completing the prefabrication of the floating plate (9); Step 3: placing the prefabricated floating plate (9) on the upper surface of the base (91), and adjusting the position of the floating plate (9) so that the base assembly (1) falls into the reserved notch (911) on the base (91); Step 4: pouring non-shrinkage epoxy resin mortar into the reserved notch (911), tamping it, pouring the base assembly (1) and the base (91) together, and then curing; Step 5: Remove the dust cover (8), pass the sleeve (101) of the tool through the top seat assembly (7), insert the tooth claw (103) into the second notch (52) of the locking eccentric nut (5), turn the wrench (102), drive the locking eccentric nut (5) to rotate on the stud (31), and completely disengage the conical surface of the lower part of the locking eccentric nut (5) from the step (42) of the nut (4); Step 6: Slightly turn the spanner (102) so that the tooth claw (103) passes through the second notch (52) and is inserted into the first notch (44) of the nut (4), and rotate the spanner (102) to drive the nut (4) and the locking eccentric nut (5) to rotate upward on the stud (31), thereby pushing the top seat assembly (7) to move upward, thereby driving the sleeve assembly (6) to rise, and adjusting the height of the floating plate (9); Step 7: Move the tool upward so that the tooth claw (103) comes out of the first notch (44) and is only inserted into the second notch (52) of the locking eccentric nut (5). Turn the wrench (102) to move the locking eccentric nut (5) downward. When the locking groove (51) is aligned with the spring pin mounting hole (43), the spring pin (431) in the spring pin mounting hole (43) pops out under the action of the spring (432). The arc surface of the spring pin (431) presses against the locking groove (51), and the conical surface at the bottom of the locking eccentric nut (5) is squeezed and clamped with the step (42) of the nut (4), thereby realizing a double locking function. Step 8: Install the dust cover (8); Step 9: Lay the rail system on the floating slab (9).

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