CN117684421A - Steel spring vibration isolator structure for track floating slab and floating slab jacking method thereof - Google Patents
Steel spring vibration isolator structure for track floating slab and floating slab jacking method thereof Download PDFInfo
- Publication number
- CN117684421A CN117684421A CN202311673926.2A CN202311673926A CN117684421A CN 117684421 A CN117684421 A CN 117684421A CN 202311673926 A CN202311673926 A CN 202311673926A CN 117684421 A CN117684421 A CN 117684421A
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- Prior art keywords
- plate
- base plate
- vibration isolator
- jacking
- steel spring
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- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01B—PERMANENT WAY; PERMANENT-WAY TOOLS; MACHINES FOR MAKING RAILWAYS OF ALL KINDS
- E01B1/00—Ballastway; Other means for supporting the sleepers or the track; Drainage of the ballastway
-
- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01B—PERMANENT WAY; PERMANENT-WAY TOOLS; MACHINES FOR MAKING RAILWAYS OF ALL KINDS
- E01B1/00—Ballastway; Other means for supporting the sleepers or the track; Drainage of the ballastway
- E01B1/002—Ballastless track, e.g. concrete slab trackway, or with asphalt layers
-
- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01B—PERMANENT WAY; PERMANENT-WAY TOOLS; MACHINES FOR MAKING RAILWAYS OF ALL KINDS
- E01B19/00—Protection of permanent way against development of dust or against the effect of wind, sun, frost, or corrosion; Means to reduce development of noise
- E01B19/003—Means for reducing the development or propagation of noise
-
- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01B—PERMANENT WAY; PERMANENT-WAY TOOLS; MACHINES FOR MAKING RAILWAYS OF ALL KINDS
- E01B2/00—General structure of permanent way
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- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Vibration Prevention Devices (AREA)
Abstract
The invention discloses a steel spring vibration isolator structure for a track floating plate and a floating plate jacking method thereof, wherein the steel spring vibration isolator comprises an upper cover and a lower cylinder, a spring is arranged in the lower cylinder, an outer sleeve is arranged on the track floating plate, the steel spring vibration isolator is arranged in the outer sleeve, a base plate boss is arranged on the inner side of the outer sleeve, the base plate boss protrudes from the side wall of the outer sleeve to the center of the outer sleeve, the upper cover is a round cover, a guide groove is arranged at the top end of the upper cover and is used for placing a height-adjusting base plate, the length of the height-adjusting base plate is longer than that of the guide groove, so that the height-adjusting base plate part protrudes out of the edge side surface of the upper cover, and can be abutted with the bottom of the base plate boss when the height-adjusting base plate is positioned below the base plate boss; and a positioning bolt is arranged between the height-adjusting base plate and the guide groove, and the distance between the height-adjusting base plate and the bottom of the guide groove is adjusted through the positioning bolt. The steel spring vibration isolator structure for the track floating plate and the floating plate jacking method thereof reduce the railway construction cost and improve the stability of the vibration isolator.
Description
Technical Field
The invention relates to a steel spring vibration isolator structure for a track floating slab and a floating slab jacking method thereof, belonging to the technical field of track traffic.
Background
The steel spring floating slab track bed is a main technical device for high-grade rail vibration isolation adopted by the subway industry, and is characterized in that a reinforced concrete track bed board with certain vibration-taking mass is suspended and fixed on a damping spring vibration isolator with specific rigidity to form a mass-spring vibration isolation system, so that the mass-spring vibration isolation system has three-dimensional elasticity and stability, and can inhibit and absorb solid sound conduction, thereby reducing the influence of rail traffic on the surrounding environment vibration and noise.
The steel spring vibration isolator is a main component of the floating slab vibration reduction track, is a main component for reducing the structural rigidity of the track, and has elasticity and damping provided by the steel spring and the damping in the vibration isolator respectively, and has obvious influence on the vibration characteristics of the floating slab track. However, the conventional steel spring vibration isolator has the following disadvantages: the steel spring vibration isolator has the advantages of more parts, complex processing technology and imperfect structural design, and has unstable damping ratio and large discreteness.
In addition, conventional steel spring isolators also exist: the upper cover and the lower cylinder are easy to separate, so that the safety problem is caused; the sealing ring is easy to fall off, so that the problem of leakage of damping fluid is caused; in addition, the traditional steel spring vibration isolator has large usage amount of the heightening base plate and high requirement on basic flatness.
For the above reasons, the present inventors have conducted intensive studies on the existing steel spring vibration isolator for a track floating plate to solve the above problems.
Disclosure of Invention
The present inventors have made intensive studies in order to overcome the above problems, and devised a steel spring vibration isolator structure for a track floating plate, which comprises an upper cover 1 and a lower cylinder 2, a spring 3 is provided in the lower cylinder 2, an outer sleeve 9 is provided on the track floating plate, the steel spring vibration isolator is disposed in the outer sleeve 9,
a backing plate boss 91 is arranged on the inner side of the outer sleeve 9, the backing plate boss 91 protrudes from the side wall of the outer sleeve 9 to the center of the outer sleeve 9,
the upper cover 1 is a round cover, a guide groove 11 is arranged at the top end of the upper cover 1 and is used for placing a height-adjusting backing plate 4,
the length of the heightening base plate 4 is longer than the length of the guide groove 11, so that the heightening base plate 4 partially protrudes out of the edge side surface of the upper cover 1, and can be abutted with the bottom of the base plate boss 91 when the heightening base plate 4 is positioned below the base plate boss 91;
a positioning bolt 5 is arranged between the height-adjusting base plate 4 and the guide groove 11, and the distance between the height-adjusting base plate 4 and the bottom of the guide groove 11 is adjusted through the positioning bolt 5.
In a preferred embodiment, the lower barrel 2 has a horizontal limit recess 22 in a central location at the bottom.
In a preferred embodiment, a positioning ring 21 is arranged at the central position of the inner side of the bottom of the lower cylinder 2, and the bottom end of the spring 3 is arranged between the cylinder wall of the lower cylinder 2 and the positioning ring 21.
In a preferred embodiment, the utility model also comprises a T-shaped bolt 6, the upper end of the T-shaped bolt 6 is fixedly connected with the upper cover 1 through a nut, the lower end is hinged with the lower cylinder 2 through a bolt head,
a bolt groove 211 is provided in the center of the retainer ring 21, and the height of the bolt groove 211 is higher than the height of the bolt head of the T-shaped bolt 6, so that the bolt head of the T-shaped bolt 6 can move up and down in the bolt groove 211.
In a preferred embodiment, the upper cover 1 and the lower cylinder 2 are integrally cast.
The steel spring vibration isolator structure for the track floating slab also comprises a jacking tool 7, wherein the jacking tool 7 comprises a jacking bracket 71 and a hydraulic cylinder 72,
the edge of the jacking bracket 71 is provided with an outwards protruding jacking plate 711, the inner side of the outer sleeve 9 is provided with a jacking boss 92, the jacking boss 92 protrudes from the side wall of the outer sleeve 9 to the center of the outer sleeve 9, and when the jacking plate 711 is positioned below the jacking boss 92, the jacking plate 711 can be abutted with the bottom of the jacking boss 92;
the main body of the hydraulic cylinder 72 is fixed on the lifting plate 711, and the top of the hydraulic cylinder is abutted against the upper cover 1, so that the upper cover can be lowered when the hydraulic cylinder 72 works, and then the steel spring between the upper cover and the lower cover is compressed.
In a preferred embodiment, a process hole 712 is provided in the jacking bracket 71 for screwing the positioning bolt 5.
The invention also provides a method for lifting the steel spring vibration isolator floating plate for the track floating plate, which comprises the following steps:
s1, placing a floating plate on a substrate, placing an isolator in an outer sleeve, and staggering a heightening base plate and a base plate boss at the moment;
s2, placing the jacking tool above the vibration isolator, rotating the vibration isolator and the jacking tool to enable the heightening base plate to be located below the base plate boss, and enabling the jacking plate to be located below the jacking boss;
s3, starting the hydraulic cylinder to enable the lifting plate to continuously rise, driving the outer sleeve to rise after the lifting plate is abutted against the lower surface of the lifting boss, and enabling the floating plate to rise along with the outer sleeve until the distance between the floating plate and the substrate reaches a preset value;
s4, tightening the positioning bolt to enable the heightening base plate to be abutted with the lower surface of the base plate boss;
s5, the hydraulic cylinder is depressurized, and the jacking tool is removed.
In a preferred embodiment, in S1, a limit projection is provided on the base, said limit projection being provided in a horizontal limit recess in the bottom of the vibration isolator.
In a preferred embodiment, in S5, a positioning plate is provided on the height-adjusting shim plate, and the positioning plate is locked with the height-adjusting shim plate by providing a nut on the positioning bolt.
The invention has the beneficial effects that:
(1) The upper cover welding piece and the lower cylinder welding piece are integrally poured from multi-part assembly welding, so that the types of parts are reduced, the dimensional accuracy of key parts is improved, the dimensional matching requirement is ensured, and the damping ratio stability is improved;
(2) The lower cylinder adopts a monolithic casting design, so that leakage caused by welding line quality errors is reduced; the upper cover and the lower cylinder are designed by adopting a limiting table, so that damping fluid leakage caused by the falling off of the sealing ring is avoided; simultaneously, the volume of damping fluid is increased, and the height of a damping page is correspondingly reduced;
(3) The upper cover is connected with the lower cylinder through a T-shaped bolt, so that the carrying safety of the vibration isolator is ensured;
(4) The thickness of the heightening base plate is obviously reduced, and the distance between the heightening base plate and the upper cover can be respectively adjusted, so that the outer sleeve is more attached to the vibration isolator.
Drawings
Fig. 1 is a schematic cross-sectional view showing the structure of a steel spring vibration isolator for a track floating slab according to a preferred embodiment of the present invention;
fig. 2 is a schematic view showing a structural perspective view of a steel spring vibration isolator for a track floating slab according to a preferred embodiment of the present invention;
FIG. 3 is a schematic view showing the structure of an outer sleeve in a steel spring vibration isolator structure for a track floating slab according to a preferred embodiment of the present invention;
fig. 4 is a schematic view showing a cross-sectional structure of an upper cover in a steel spring vibration isolator structure for a track floating plate according to a preferred embodiment of the present invention;
fig. 5 is a schematic view showing a perspective structure of a lower cylinder in a steel spring vibration isolator structure for a track floating plate according to a preferred embodiment of the present invention;
fig. 6 is a schematic view showing a cross-sectional structure of a lower cylinder in a steel spring vibration isolator structure for a track floating plate according to a preferred embodiment of the present invention;
FIG. 7 is a schematic view showing the structure of a height-adjusting shim plate in a steel spring vibration isolator structure for a track floating plate according to a preferred embodiment of the present invention;
fig. 8 is a schematic perspective view showing a jacking tool in a steel spring vibration isolator structure for a track floating slab according to a preferred embodiment of the present invention;
fig. 9 is a schematic cross-sectional view showing a jacking tool in a steel spring vibration isolator structure for a track floating slab according to a preferred embodiment of the present invention;
FIGS. 10 and 11 are views showing a state of step S1 in a method of lifting a floating slab of a steel spring vibration isolator for a track floating slab according to a preferred embodiment of the present invention;
FIGS. 12 and 13 are views showing a state of step S2 in a method of lifting up a floating slab of a steel spring vibration isolator for a track floating slab according to a preferred embodiment of the present invention;
FIG. 14 is a state diagram showing a step S4 in a method of lifting a floating slab of a steel spring vibration isolator for a track floating slab according to a preferred embodiment of the present invention;
fig. 15 is a state diagram showing a step S5 in a method of lifting up a floating slab of a steel spring vibration isolator for a track floating slab according to a preferred embodiment of the present invention.
Reference numerals illustrate:
1-an upper cover;
2-lower cylinder;
3-a spring;
4-heightening the backing plate;
5-positioning bolts;
a 6-T bolt;
7-jacking a tool;
9-an outer sleeve;
11-a guide groove;
12-an outer ring connecting ring;
13-an inner ring connection ring;
14-a limiting table;
15-sealing ring
16-clamping hoop;
21-positioning rings;
22-a horizontal limit groove;
71-lifting a bracket;
72-a hydraulic cylinder;
73-lifting a rod;
81-floating plates;
82-a substrate;
83-positioning plate;
91-backing plate boss;
92-lifting the boss;
211-bolt slots;
711-jacking plate;
712-process holes.
Detailed Description
The invention is further described in detail below by means of the figures and examples. The features and advantages of the present invention will become more apparent from the description.
The word "exemplary" is used herein to mean "serving as an example, embodiment, or illustration. Any embodiment described herein as "exemplary" is not necessarily to be construed as preferred or advantageous over other embodiments. Although various aspects of the embodiments are illustrated in the accompanying drawings, the drawings are not necessarily drawn to scale unless specifically indicated.
According to the steel spring vibration isolator structure for the track floating plate, which is provided by the invention, the steel spring vibration isolator comprises an upper cover 1 and a lower cylinder 2, a spring 3 is arranged in the lower cylinder 2, as shown in figures 1 and 2, an outer sleeve 9 is arranged on the track floating plate, the steel spring vibration isolator is arranged in the outer sleeve 9,
a backing plate boss 91 is provided on the inside of the outer sleeve 9, the backing plate boss 91 protruding from the side wall of the outer sleeve 9 toward the center of the outer sleeve 9, as shown in figure 3,
the upper cover 1 is a round cover, a guide groove 11 is arranged at the top end of the upper cover 1 and used for placing the height-adjusting base plate 4, the guide groove 11 is used for limiting the circumferential movement of the height-adjusting base plate 4 relative to the upper cover 1,
the length of the heightening base plate 4 is longer than the length of the guide groove 11, so that the heightening base plate 4 partially protrudes out of the edge side surface of the upper cover 1, and can be abutted with the bottom of the base plate boss 91 when the heightening base plate 4 is positioned below the base plate boss 91;
a positioning bolt 5 is arranged between the height-adjusting base plate 4 and the guide groove 11, and the distance between the height-adjusting base plate 4 and the bottom of the guide groove 11 is adjusted through the positioning bolt 5.
In the traditional vibration isolator, the floating plate is required to be added with at least 35mm of height-adjusting base plates at each vibration isolator position from the position of the floating plate to the suspension state, and the whole circuit cost is high. According to practical tests, the thickness of the heightening backing plate can be reduced by 15mm, and the production cost is effectively reduced.
The inventor finds that through the structure, the requirement on the flatness of the substrate is also reduced, in general, a plurality of height-adjusting base plates are required to be arranged between the vibration isolator and the outer sleeve, when the substrate is uneven, the vibration isolator cannot be horizontally placed, and because the thickness of the height-adjusting base plates on the traditional vibration isolator is fixed, a certain one of the plurality of height-adjusting base plates cannot be attached to the supporting surface of the outer sleeve necessarily, and vibration, shaking and the like are easy to occur. According to the structure provided by the invention, the height between each height-adjusting base plate and the upper cover can be flexibly adjusted through the bolts, so that the stability of the floating plate is improved.
In a preferred embodiment, the guide grooves 11 are 3, and are uniformly distributed at the top end of the upper cover 1 in the circumferential direction, as shown in fig. 2.
Correspondingly, the number of the backing plate bosses 91 is 3, and the backing plate bosses are uniformly distributed on the inner side of the outer sleeve 9 in the circumferential direction.
According to the invention, an outer ring connecting ring 12 is arranged outside the bottom end of the upper cover 1 and is used for being connected with the lower cylinder 2;
an inner ring connecting ring 13 is arranged on the inner side of the bottom end of the upper cover 1, and the top end of the spring 3 is arranged between the outer ring connecting ring 12 and the inner ring connecting ring 13 as shown in fig. 4;
in a preferred embodiment, the lower barrel 2 has a horizontal limit groove 22 at the bottom center, which is a cylindrical groove, so that the vibration isolator can only rotate along the center axis and cannot translate in the horizontal plane.
In a preferred embodiment, as shown in fig. 1, the upper cover 1 and the lower cylinder 2 are connected by a seal ring 15. More preferably, a clamp 16 is further arranged at the connection position of the sealing ring 15 and the upper cover 1 or the lower cylinder 2, so that the sealing ring is prevented from falling off.
Further, a damping fluid is filled in the lower cylinder 2.
In a preferred embodiment, a raised limiting table 14 is arranged at the contact position of the upper cover 1 and the lower cylinder 2 with the sealing ring, and the sealing ring is prevented from falling off by the limiting table, so that damping fluid leakage is avoided.
In a preferred embodiment, a positioning ring 21 is arranged at the central position inside the bottom of the lower cylinder 2, and the bottom end of the spring 3 is arranged between the cylinder wall of the lower cylinder 2 and the positioning ring 21, as shown in fig. 5-6.
According to a preferred embodiment of the present invention, the vibration isolator further comprises a T-bolt 6, the upper end of the T-bolt 6 is fixedly connected with the upper cover 1 by a nut, the lower end is hinged with the lower cylinder 2 by a bolt head,
a bolt groove 211 is provided in the center of the retainer ring 21, and the height of the bolt groove 211 is higher than the height of the bolt head of the T-shaped bolt 6, so that the bolt head of the T-shaped bolt 6 can move up and down in the bolt groove 211.
According to the invention, the T-shaped bolt 6 plays a supporting role after the spring is broken, so that the sinking amount of the vibration isolator is ensured to be within the standard, specifically, under normal conditions, the spring is a support between the upper cover 1 and the lower cylinder 2, and the bolt head of the T-shaped bolt 6 is abutted against the upper end of the bolt groove 211; when the spring is broken, the upper cover 1 is pressed towards the lower cylinder 2, and the T-shaped bolt 6 replaces the spring to serve as a support, so that the sinking amount of the upper cover 1 does not exceed the height of the bolt groove 211. In addition, the upper cover and the lower cylinder are connected through the T-shaped bolt, so that the safety of the vibration isolator in the carrying process is guaranteed, and collision between the upper cover and the lower cylinder is avoided.
According to a preferred embodiment of the present invention, the upper cover 1 and the lower cylinder 2 are integrally cast. The upper cover and the lower cylinder of the traditional vibration isolator are generally welded, specifically, the inner ring of the upper cover is selected according to the inner ring of the spring, then machining and positioning welding are carried out, the inner ring of the lower cylinder is also machined and welded, the machining process is complex, and the stability is poor. According to the invention, a pouring mode is adopted, so that the structural strength of the product can be greatly improved, the deformation degree of the product is reduced, and leakage caused by welding line quality errors is reduced.
In a preferred embodiment, the height-adjusting backing plate 4 is provided with threaded holes, as shown in fig. 7.
More preferably, the screw thread in the threaded hole of the height-adjusting backing plate 4 is rectangular, can transmit large torque and shearing force, and can be self-locked.
Further, the steel spring vibration isolator for the track floating plate also comprises a jacking tool 7, wherein the jacking tool 7 comprises a jacking bracket 71 and a hydraulic cylinder 72, as shown in figures 8 and 9,
the edge of the jacking bracket 71 is provided with an outwards protruding jacking plate 711, the inner side of the outer sleeve 9 is provided with a jacking boss 92, the jacking boss 92 protrudes from the side wall of the outer sleeve 9 to the center of the outer sleeve 9, and when the jacking plate 711 is positioned below the jacking boss 92, the jacking plate 711 can be abutted with the bottom of the jacking boss 92;
the main body of the hydraulic cylinder 72 is fixed on the lifting plate 711, and the top of the hydraulic cylinder is abutted against the upper cover 1, so that the upper cover can be lowered when the hydraulic cylinder 72 works, and then the steel spring between the upper cover and the lower cover is compressed.
In a preferred embodiment, the jacking tool 7 further has a jacking rod 73, which is convenient for personnel to operate.
Further, as shown in fig. 8, a process hole 712 for screwing the positioning bolt 5 is provided on the jacking bracket 71.
The invention also provides a method for lifting the steel spring vibration isolator floating plate for the track floating plate, which comprises the following steps:
s1, placing a floating plate on a substrate, placing an isolator in an outer sleeve, and staggering a heightening base plate and a base plate boss at the moment;
in a preferred embodiment, in S1, a limit projection is provided on the base, said limit projection being provided in a horizontal limit recess in the bottom of the vibration isolator.
Preferably, the vibration isolator is placed in the outer sleeve and then the height-adjusting shim plate is installed, as shown in fig. 10 and 11.
S2, placing the jacking tool above the vibration isolator, rotating the vibration isolator and the jacking tool so that the heightening base plate is positioned below the base plate boss, and the jacking plate is positioned below the jacking boss, as shown in figures 12 and 13;
s3, starting the hydraulic cylinder to enable the lifting plate to continuously rise, driving the outer sleeve to rise after the lifting plate is abutted against the lower surface of the lifting boss, further enabling the floating plate to rise along with the outer sleeve until the distance between the floating plate and the substrate reaches a preset value, preferably, the preset value is 30mm,
s4, tightening the positioning bolt to enable the heightening base plate to be abutted with the lower surface of the base plate boss, as shown in FIG. 14;
according to the invention, the distance between the height-adjusting base plate and the upper cover main body is adjusted through the positioning bolts, so that the thickness of the height-adjusting base plate is reduced.
S5, the hydraulic cylinder is depressurized, and the jacking tool is removed.
Preferably, in S5, a positioning plate is disposed on the height-adjusting backing plate, and the positioning plate is locked with the height-adjusting backing plate by disposing a nut on the positioning bolt, as shown in fig. 15.
In the description of the present invention, it should be noted that the positional or positional relationship indicated by the terms such as "upper", "lower", "inner", "outer", "front", "rear", etc. are based on the positional or positional relationship in the operation state of the present invention, are merely for convenience of describing the present invention and simplifying the description, and do not indicate or imply that the apparatus or elements referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as limiting the present invention. Furthermore, the terms "first," "second," "third," "fourth," and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
The invention has been described above in connection with preferred embodiments, which are, however, exemplary only and for illustrative purposes. On this basis, the invention can be subjected to various substitutions and improvements, and all fall within the protection scope of the invention.
Claims (10)
1. The steel spring vibration isolator structure for the track floating plate comprises an upper cover (1) and a lower cylinder (2), wherein a spring (3) is arranged in the lower cylinder (2), an outer sleeve (9) is arranged on the track floating plate, the steel spring vibration isolator is arranged in the outer sleeve (9) and is characterized in that,
a base plate boss (91) is arranged on the inner side of the outer sleeve (9), the base plate boss (91) protrudes from the side wall of the outer sleeve (9) to the center of the outer sleeve (9),
the upper cover (1) is a round cover, a guide groove (11) is arranged at the top end of the upper cover (1) and is used for placing a height-adjusting base plate (4),
the length of the heightening base plate (4) is longer than that of the guide groove (11), so that the heightening base plate (4) partially protrudes out of the edge side surface of the upper cover (1), and can be abutted with the bottom of the base plate boss (91) when the heightening base plate (4) is positioned below the base plate boss (91);
a positioning bolt (5) is arranged between the height-adjusting base plate (4) and the guide groove (11), and the distance between the height-adjusting base plate (4) and the bottom of the guide groove (11) is adjusted through the positioning bolt (5).
2. The steel spring vibration isolator structure for a track floating slab according to claim 1, wherein,
the central position of the bottom of the lower cylinder (2) is provided with a horizontal limit groove (22).
3. The steel spring vibration isolator structure for a track floating slab according to claim 1, wherein,
the inner side central position of the bottom of the lower cylinder (2) is provided with a positioning ring (21), and the bottom end of the spring (3) is arranged between the cylinder wall of the lower cylinder (2) and the positioning ring (21).
4. The steel spring vibration isolator structure for a track floating slab according to claim 1, wherein,
also comprises a T-shaped bolt (6), the upper end of the T-shaped bolt (6) is fixedly connected with the upper cover (1) through a nut, the lower end is hinged with the lower cylinder (2) through a bolt head,
a bolt groove (211) is formed in the center of the positioning ring (21), and the height of the bolt groove (211) is higher than that of the bolt head of the T-shaped bolt (6), so that the bolt head of the T-shaped bolt (6) can move up and down in the bolt groove (211).
5. The steel spring vibration isolator structure for a track floating slab according to claim 1, wherein,
the upper cover (1) and the lower cylinder (2) are integrally cast.
6. The steel spring vibration isolator structure for the track floating plate according to claim 1, which is characterized by further comprising a jacking tool (7), wherein the jacking tool (7) comprises a jacking bracket (71) and a hydraulic cylinder (72),
the edge of the jacking bracket (71) is provided with an outwards protruding jacking plate (711), a jacking boss (92) is arranged on the inner side of the outer sleeve (9), the jacking boss (92) protrudes from the side wall of the outer sleeve (9) to the center of the outer sleeve (9), and when the jacking plate (711) is positioned below the jacking boss (92), the jacking plate can be abutted with the bottom of the jacking boss (92);
the main body of the hydraulic cylinder (72) is fixed on the jacking plate (711), and the top of the hydraulic cylinder is abutted on the upper cover (1), so that the upper cover can be pressed down when the hydraulic cylinder (72) works, and then a steel spring between the upper cover and the lower cover is compressed.
7. The steel spring vibration isolator structure for a track floating slab according to claim 6, wherein,
and a process hole (712) is formed in the jacking bracket (71) and is used for screwing the positioning bolt (5).
8. The method for lifting the floating plate of the steel spring vibration isolator for the track floating plate is characterized by comprising the following steps of:
s1, placing a floating plate on a substrate, placing an isolator in an outer sleeve, and staggering a heightening base plate and a base plate boss at the moment;
s2, placing the jacking tool above the vibration isolator, rotating the vibration isolator and the jacking tool to enable the heightening base plate to be located below the base plate boss, and enabling the jacking plate to be located below the jacking boss;
s3, starting the hydraulic cylinder to enable the lifting plate to continuously rise, driving the outer sleeve to rise after the lifting plate is abutted against the lower surface of the lifting boss, and enabling the floating plate to rise along with the outer sleeve until the distance between the floating plate and the substrate reaches a preset value;
s4, tightening the positioning bolt to enable the heightening base plate to be abutted with the lower surface of the base plate boss;
s5, the hydraulic cylinder is depressurized, and the jacking tool is removed.
9. The method for lifting a floating slab of a steel spring vibration isolator for a track floating slab according to claim 8, wherein,
in S1, a limiting protrusion is arranged on a substrate and is arranged in a horizontal limiting groove at the bottom of the vibration isolator.
10. The method for lifting a floating slab of a steel spring vibration isolator for a track floating slab according to claim 8, wherein,
and S5, arranging a positioning plate on the heightening backing plate, and locking the positioning plate and the heightening backing plate by arranging nuts on the positioning bolts.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311673926.2A CN117684421A (en) | 2023-12-07 | 2023-12-07 | Steel spring vibration isolator structure for track floating slab and floating slab jacking method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311673926.2A CN117684421A (en) | 2023-12-07 | 2023-12-07 | Steel spring vibration isolator structure for track floating slab and floating slab jacking method thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN117684421A true CN117684421A (en) | 2024-03-12 |
Family
ID=90134591
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202311673926.2A Pending CN117684421A (en) | 2023-12-07 | 2023-12-07 | Steel spring vibration isolator structure for track floating slab and floating slab jacking method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN117684421A (en) |
-
2023
- 2023-12-07 CN CN202311673926.2A patent/CN117684421A/en active Pending
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