Subway electromechanical device anti-seismic structure

Abstract

The utility model relates to a subway electromechanical device anti -seismic structure relates to the field of subway electromechanical device anti -seismic, solved the traditional anti -seismic technique rigid fixing or single shock insulation support (such as rubber shock insulation pad, spring damper) more, conventional shock insulation device often aims at vertical vibration design, and subway vibration has obvious horizontal and torsional component, the lateral impact force produced when train in and out station easily leads to the shear displacement between equipment and base, causes the fatigue fracture of connecting piece, secondly the lead rubber support although has certain energy dissipation capacity, but its hysteresis curve under the multiple cyclic load easily appears the problem of rigidity degradation. Technical features include: base, install the fixed plate in the four around of base and install the fixed bolt on the fixed plate, the base is used for with ground contact, the base is fixed on the ground through the fixed bolt on the fixed plate. Do not need to dismantle the equipment as a whole, the structure is relatively simple, convenient to use.

Description

Technical Field

[0001] This utility model relates to the field of seismic resistance technology for subway electromechanical equipment, and in particular to a seismic-resistant structure for subway electromechanical equipment. Background Technology

[0002] A subway is an urban rail transit system, usually powered by electricity, consisting of stations, tunnels, and railway lines. It is used to efficiently and quickly transport large numbers of passengers in cities. Subways have high safety, speed, and capacity, greatly reducing urban traffic pressure and facilitating people's travel.

[0003] As a vital artery of urban transportation, the stable operation of the subway's electromechanical equipment is directly related to the subway's safe operation and passenger experience. However, the subway environment has long faced complex vibration challenges. On the one hand, it is caused by low-frequency, high-amplitude vibrations triggered by natural disasters such as earthquakes, and on the other hand, it is caused by high-frequency, continuous vibrations generated by frequent train starts and stops, wheel-rail friction, and the operation of the equipment itself.

[0004] Traditional seismic resistance technologies often employ rigid fixed or single seismic isolation bearings (such as rubber seismic isolation pads and spring vibration dampers). Conventional seismic isolation devices are often designed for vertical vibrations, while subway vibrations have significant horizontal and torsional components. The lateral impact force generated when trains enter or leave the station can easily cause shear displacement between the equipment and the base, resulting in fatigue fracture of the connecting parts. Secondly, although conventional lead-core rubber bearings have a certain energy dissipation capacity, their hysteresis curves are prone to stiffness degradation under repeated cyclic loading. Therefore, in order to solve this problem, it is necessary to design a seismic-resistant structure for subway electromechanical equipment. Utility Model Content

[0005] This invention addresses the problem that traditional seismic resistance technologies often employ rigid fixing or single seismic isolation bearings (such as rubber vibration isolation pads and spring vibration dampers). Conventional seismic isolation devices are typically designed for vertical vibrations, while subway vibrations have significant horizontal and torsional components. The lateral impact force generated when trains enter or leave the station can easily cause shear displacement between the equipment and the base, leading to fatigue fracture of the connecting parts. Furthermore, although conventional lead-core rubber bearings have a certain energy dissipation capacity, their hysteresis curves are prone to stiffness degradation under repeated cyclic loading. This invention provides a seismic-resistant structure for subway electromechanical equipment.

[0006] To solve the above-mentioned technical problems, the specific technical solution of this utility model is as follows:

[0007] A seismic-resistant structure for subway electromechanical equipment, comprising:

[0008] The base, the fixing plates installed around the base, and the fixing bolts installed on the fixing plates;

[0009] The base is used to contact the ground, and the base is fixed to the ground by fixing bolts on the fixing plate;

[0010] Also includes:

[0011] Vibration isolation and energy dissipation components installed on the base, limiting components installed on the upper surface of the vibration isolation and energy dissipation components, support components installed on the upper surface of the vibration isolation and energy dissipation components, and limiting and damping components installed on the support components;

[0012] The seismic isolation and energy dissipation component is fixed to the upper surface of the base by bolts. The limiting component is fixed to the upper surface of the seismic isolation and energy dissipation component by bolts, and the subway electromechanical device is fixed to the upper surface of the seismic isolation and energy dissipation component. The support component is fixed to the upper surface of the seismic isolation and energy dissipation component by bolts, and the limiting and damping components on the support component provide vibration damping.

[0013] Preferably, the vibration isolation and energy dissipation component includes an upper mounting plate, a middle clamping plate located below the upper mounting plate, a lower mounting plate located below the middle clamping plate, a first vibration isolation part installed between the upper mounting plate and the middle clamping plate, and a second vibration isolation part installed between the lower mounting plate and the middle clamping plate.

[0014] The upper mounting plate is used to install on the subway electromechanical equipment, the lower mounting plate is used to connect with the base, and the middle clamping plate is used to connect the first vibration isolation part and the second vibration isolation part.

[0015] Preferably, the middle layer sandwich plate includes an upper support plate installed on the first vibration isolation part, a lower support plate installed on the second vibration isolation part, and a plurality of support connecting plates installed between the upper support plate and the lower support plate;

[0016] The supporting connecting plate is an X-shaped cross connecting plate, and the supporting connecting plate is connected to the upper supporting plate and the lower supporting plate by U-shaped buckles.

[0017] Preferably, the first vibration isolation part includes two pairs of first lead-core rubber bearings installed between the upper support plate and the middle layer clamping plate, and three pairs of first viscous dampers installed between the upper support plate and the middle layer clamping plate.

[0018] Two pairs of first lead-core rubber supports are connected to the upper support plate at one end by bolts, and the other end of the two pairs of first lead-core rubber supports are connected to the middle layer clamping plate by bolts. The two pairs of first lead-core rubber supports are symmetrically distributed at the four corners of the upper support plate. The three pairs of first viscous dampers are radially inclined and form a hexagonal symmetrical layout. The three pairs of first viscous dampers are obliquely connected to the upper support plate and the middle layer clamping plate. The upper end of the first viscous damper is fixed to the lower surface of the upper support plate, and the lower end of the first viscous damper is fixed to the upper surface of the middle layer clamping plate.

[0019] Preferably, the second vibration isolation part includes two pairs of second lead-core rubber bearings installed between the lower support plate and the middle layer clamping plate, and three pairs of second viscous dampers installed between the lower support plate and the middle layer clamping plate.

[0020] Two pairs of second lead-core rubber supports are connected at one end to the lower support plate by bolts, and at the other end to the middle layer clamping plate by bolts. The two pairs of second lead-core rubber supports are symmetrically distributed at the four corners of the lower support plate. Three pairs of second viscous dampers are radially inclined and form a hexagonal symmetrical layout. The three pairs of second viscous dampers are obliquely connected to the lower support plate and the middle layer clamping plate. The upper end of the second viscous damper is fixed to the lower surface of the middle layer clamping plate, and the lower end of the second viscous damper is fixed to the upper surface of the lower support plate.

[0021] Preferably, the limiting component includes two pairs of limiting plates mounted on the upper surface of the upper support plate;

[0022] The two pairs of limiting plates are bolted to the upper surface of the upper support plate, and the two pairs of limiting plates are used to limit and fix the subway electromechanical device.

[0023] Preferably, the support assembly includes a mounting base mounted on the upper surface of the upper support plate, a vertical column mounted on the upper surface of the mounting base, and a crossbeam mounted on the vertical column;

[0024] The mounting base is fixed to the upper surface of the upper support plate by bolts, and the mounting base is located around the subway electromechanical equipment. The vertical column is welded to the upper surface of the mounting base, the horizontal beam is welded to the vertical column, and the horizontal beam is located at 2 / 3 of the height of the subway electromechanical equipment.

[0025] Preferably, the limiting and shock-absorbing assembly includes a honeycomb aluminum plate installed on the vertical column and the horizontal beam, and a silicone shock-absorbing pad installed on the honeycomb aluminum plate.

[0026] This utility model has the following beneficial effects:

[0027] This seismic-resistant structure for subway electromechanical equipment significantly improves the seismic performance of subway electromechanical equipment through multi-level synergistic energy dissipation. It forms a composite energy dissipation network by symmetrically distributing first and second lead-core rubber bearings at their four corners, along with a radial layout of first and second viscous dampers, thereby reducing vibration. The first and second lead-core rubber bearings dissipate energy through the shear plastic deformation of the lead core. The radial layout of the first and second viscous dampers decomposes horizontal vibrations into axial forces, reducing the torsional effect of the equipment. The synergistic effect of the support connecting plate and the hexagonal damper layout counteracts the torsional moment. The combined effect of the crushing deformation of the honeycomb aluminum plate and the frictional sliding of the silicone pad prevents resonance damage. It occupies relatively little space, and when replacing or maintaining the first and second lead-core rubber bearings, the first and second viscous dampers, and the second viscous dampers, there is no need to completely disassemble the equipment. The structure is relatively simple and easy to use. Attached Figure Description

[0028] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments.

[0029] Figure 1 This is a structural schematic diagram of a seismic-resistant structure for a subway electromechanical device according to the present invention;

[0030] Figure 2 This is a front view structural diagram of a seismic-resistant structure for subway electromechanical devices according to this utility model;

[0031] Figure 3 This is a front view of a seismic-resistant structure for a subway electromechanical device according to this utility model;

[0032] Figure 4 This is a top view of a seismic-resistant structure for a subway electromechanical device according to this utility model;

[0033] Figure 5 This is a partial schematic diagram of a seismic-resistant structure for a subway electromechanical device according to the present invention;

[0034] Figure 6 This is a partial schematic diagram of the vibration isolation and energy dissipation component of this utility model.

[0035] The reference numerals in the figure are:

[0036] 1. Base; 2. Fixing plate; 3. Fixing bolts; 4. Vibration isolation and energy dissipation components; 5. Limiting components; 6. Support components; 7. Limiting and damping components.

[0037] Upper mounting plate 41, middle clamping plate 42, lower mounting plate 43, first lead-core rubber support 44, first viscous damper 45, second lead-core rubber support 46, second viscous damper 47;

[0038] Upper support plate 421, lower support plate 422, support connecting plate 423;

[0039] Limit plate 51;

[0040] Mounting base 61, vertical column 62, horizontal beam 63;

[0041] 71. Honeycomb aluminum panel; 72. Silicone shock-absorbing pad. Detailed Implementation

[0042] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0043] Please see Figure 1-6 An anti-seismic structure for subway electromechanical equipment includes: a base 1, a fixing plate 2 installed around the base 1, and fixing bolts 3 installed on the fixing plate 2. The base 1 is used to contact the ground and is fixed to the ground by the fixing bolts 3 on the fixing plate 2. It also includes: a seismic isolation and energy dissipation component 4 installed on the base 1, a limiting component 5 installed on the upper surface of the seismic isolation and energy dissipation component 4, a support component 6 installed on the upper surface of the seismic isolation and energy dissipation component 4, and a limiting and damping component 7 installed on the support component 6. The seismic isolation and energy dissipation component 4 is fixed to the upper surface of the base 1 by bolts, the limiting component 5 is fixed to the upper surface of the seismic isolation and energy dissipation component 4 by bolts and fixes the subway electromechanical equipment to the upper surface of the seismic isolation and energy dissipation component 4, and the support component 6 is fixed to the upper surface of the seismic isolation and energy dissipation component 4 by bolts and performs vibration damping by the limiting and damping component 7 on the support component 6.

[0044] The base 1 is made of Q235B steel with galvanized surface treatment. The base 1 is placed at the position of the pre-embedded anchor bolts in the subway equipment compartment. The base is leveled using a laser level to ensure that the horizontal error of the upper surface of the base is ≤1mm / m. Eight fixing plates 2 are welded around the base 1. The fixing bolts 3 are M24 high-strength bolts, which pass through the reserved holes on the fixing plates 2 and are connected to the ground embedded parts.

[0045] The seismic isolation and energy dissipation component 4 includes an upper mounting plate 41, a middle clamping plate 42 located below the upper mounting plate 41, a lower mounting plate 43 located below the middle clamping plate 42, a first seismic isolation part installed between the upper mounting plate 41 and the middle clamping plate 42, and a second seismic isolation part installed between the lower mounting plate 43 and the middle clamping plate 42. The upper mounting plate 41 is used to install on the subway electromechanical equipment, the lower mounting plate 43 is used to connect with the base 1, and the middle clamping plate 42 is used to connect the first seismic isolation part and the second seismic isolation part.

[0046] Both the upper mounting plate 41 and the lower mounting plate 43 are made of Q345 steel plates, and the surfaces are coated with epoxy zinc-rich primer.

[0047] The middle layer plate 42 includes an upper support plate 421 installed on the first vibration isolation part, a lower support plate 422 installed on the second vibration isolation part, and a plurality of support connecting plates 423 installed between the upper support plate 421 and the lower support plate 422. The support connecting plates 423 are X-shaped cross connecting plates, and the support connecting plates 423 are connected to the upper support plate 421 and the lower support plate 422 by U-shaped buckles.

[0048] The middle layer plate 42 is composed of an upper support plate 421, a lower support plate 422 and a support connecting plate 423. The upper support plate 421 and the lower support plate 422 are Q355B support plates. The support connecting plate 423 has a cross angle of 60° and is connected to the upper support plate 421 and the lower support plate 422 by a U-shaped buckle. The U-shaped buckle is a 304 stainless steel U-shaped buckle with a gap of 3mm.

[0049] The first seismic isolation unit includes two pairs of first lead-core rubber bearings 44 installed between the upper support plate 421 and the middle layer clamping plate 42, and three pairs of first viscous dampers 45 installed between the upper support plate 421 and the middle layer clamping plate 42. One end of the two pairs of first lead-core rubber bearings 44 is connected to the upper support plate 421 by bolts, and the other end of the two pairs of first lead-core rubber bearings 44 is connected to the middle layer clamping plate 42 by bolts. The two pairs of first lead-core rubber bearings 44 are symmetrically distributed at the four corners of the upper support plate 421, and the three pairs of first viscous dampers 45 are radially inclined to form a hexagonal symmetrical layout. The three pairs of first viscous dampers 45 are obliquely connected to the upper support plate 421 and the middle layer clamping plate 42. The upper end of the first viscous damper 45 is fixed to the lower surface of the upper support plate 421, and the lower end of the first viscous damper 45 is fixed to the upper surface of the middle layer clamping plate 42.

[0050] The second seismic isolation unit includes two pairs of second lead-core rubber bearings 46 installed between the lower support plate 422 and the middle layer clamping plate 42, and three pairs of second viscous dampers 47 installed between the lower support plate 422 and the middle layer clamping plate 42. One end of each pair of second lead-core rubber bearings 46 is connected to the lower support plate 422 by bolts, and the other end of each pair of second lead-core rubber bearings 46 is connected to the middle layer clamping plate 42 by bolts. The two pairs of second lead-core rubber bearings 46 are symmetrically distributed at the four corners of the lower support plate 422, and the three pairs of second viscous dampers 47 are radially inclined to form a hexagonal symmetrical layout. The three pairs of second viscous dampers 47 are obliquely connected to the lower support plate 422 and the middle layer clamping plate 42. The upper end of each second viscous damper 47 is fixed to the lower surface of the middle layer clamping plate 42, and the lower end of each second viscous damper 47 is fixed to the upper surface of the lower support plate 422.

[0051] The first lead-core rubber support 44 and the second lead-core rubber support 46 are LRB-300×50 lead-core rubber supports. The second lead-core rubber support 46 is fixed with M20 bolts, and the first lead-core rubber support 44 is also fixed with M20 bolts. The first viscous damper 45 and the second viscous damper 47 are VD-80 / 100 viscous dampers. The first viscous damper 45 and the second viscous damper 47 form a 30° angle with the first lead-core rubber support 44 and the second lead-core rubber support 46.

[0052] The limiting assembly 5 includes two pairs of limiting plates 51 installed on the upper surface of the upper support plate 421. The two pairs of limiting plates 51 are installed on the upper surface of the upper support plate 421 by bolts, and the two pairs of limiting plates 51 limit and fix the metro electromechanical device.

[0053] The inner side of the limiting plate 51 has a 5mm gap with the equipment and is fixed to the upper mounting plate 41 by M16 bolts. Silicone rubber buffer strips are filled between the limiting plate 51 and the equipment to absorb high-frequency micro-vibrations.

[0054] The support assembly 6 includes a mounting base 61 mounted on the upper surface of the upper support plate 421, a vertical column 62 mounted on the upper surface of the mounting base 61, and a crossbeam 63 mounted on the vertical column 62. The mounting base 61 is fixed to the upper surface of the upper support plate 421 by bolts and is located around the metro electromechanical equipment. The vertical column 62 is welded to the upper surface of the mounting base 61, and the crossbeam 63 is welded to the vertical column 62 and is located at 2 / 3 of the height of the metro electromechanical equipment.

[0055] Mounting base 61 is fixed to upper mounting plate 41 with M24 bolts. Vertical column 62 is made of Q355B seamless steel pipe. The bottom of vertical column 62 is welded to the upper surface of mounting base 61. The height of vertical column 62 is adjusted according to the equipment size (usually 2 / 3 of the equipment height, such as 2.7m high equipment, the crossbeam is installed at 1.8m). Crossbeam 63 is welded between vertical columns 62 to form a rectangular rigid frame with vertical columns 62.

[0056] The limiting and shock-absorbing assembly 7 includes a honeycomb aluminum plate 71 installed on the vertical column 62 and the crossbeam 63, and a silicone shock-absorbing pad 72 installed on the honeycomb aluminum plate 71.

[0057] Honeycomb aluminum panel 71 (thickness 50mm, density 0.3g / cm³) 3 (10mm aperture) is pasted on the inside of the crossbeam 63, and the joint is filled with polyurethane sealant. Silicone shock-absorbing pads 72 are installed on the surface of the honeycomb aluminum plate 71 and fixed to the honeycomb aluminum plate 71 by 6063 aluminum profile pressure strips and bolts.

[0058] First, use a total station to locate the center line of base 1, hoist base 1 above the embedded parts, adjust the position to align the bolt holes, place adjustable shims at the four corners of base 1, weld the fixing plate 2 to base 1 using continuous fillet welds, and grind away the weld slag after cooling. Then, pass the fixing bolts 3 through the fixing plate and tighten them to the embedded parts in the ground. Next, install the second lead-core rubber support 46 onto the lower mounting plate using bolts. Then, hoist the lower mounting plate 43 onto the upper surface of base 1 and temporarily fix it using M20 bolts. Assemble the middle clamping plate 42 and connect the supports. Plate 423 is connected to the upper support plate 421 and the lower support plate 422 via U-shaped buckles with a 3mm gap. It is then hoisted onto the second lead-core rubber support 46, aligning the holes. The second lead-core rubber support 46 is connected to the lower support plate 422 via bolts. Then, the second viscous damper 47 is installed. The upper pin of the second viscous damper 47 is connected to the lower support plate 422, and the lower pin of the second viscous damper 47 is connected to the lower mounting plate 43. The anti-loosening nut is tightened. Finally, the first lead-core rubber support 44 is installed onto the upper support plate via bolts. 421 is then installed on the upper mounting plate 41 and hoisted onto the first lead-core rubber support 44. The holes are aligned, and the first lead-core rubber support 44 is connected to the upper mounting plate 41 with bolts. The first viscous damper 45 is installed, with its upper pin connected to the upper support plate 421 and its lower pin connected to the upper mounting plate 41. A crane is used to hoist the electromechanical equipment onto the upper mounting plate 41, and the position is adjusted so that the center of gravity projection deviation is ≤10mm. Limiting plates 51 are installed at the four corners of the equipment, with the inner side aligned with the equipment... A 5mm gap is provided, and the equipment is fixed with M16 bolts. The space between the limiting plate 51 and the equipment is filled with silicone rubber strips. Mounting bases 61 are installed around the equipment. Vertical columns 62 of the corresponding size are welded to the upper surface of the mounting bases 61. The crossbeam 63 is welded to the vertical columns 62, with a height of 2 / 3 of the equipment height. The honeycomb aluminum plate 71 is cut to match the inner edge of the crossbeam 63. The silicone shock-absorbing pad 72 is fixed to the honeycomb aluminum plate 71 with pressure strips. Finally, the honeycomb aluminum plate 71 is glued to the vertical columns 62 and the crossbeam 63 with epoxy structural adhesive.

[0059] The applicant conducted experiments using the device, including static performance testing: applying a horizontal thrust of 50kN to the device using a hydraulic jack, measuring the displacement of the isolation layer (allowable displacement ≤15mm, corresponding to the pre-yield state of the lead core support), and a reset error ≤2mm; checking bolt preload: randomly inspecting 10% of bolts using an ultrasonic bolt stress meter, with a preload loss rate ≤10%; and dynamic vibration testing: inputting white noise vibration (frequency 0.1-50Hz, acceleration 0.1g), and collecting the device response through an acceleration sensor (PCB 356A01): horizontal transmissibility ≤0.35 (@10Hz), vertical transmissibility ≤0.25 (@10Hz); simulating seismic waves (inputting El-Centro wave, PGA=0.4g, lasting 30 seconds), with a maximum device displacement ≤25mm, no plastic deformation of the structure, and damper temperature ≤80℃.

[0060] Obviously, the above embodiments are merely illustrative examples for clear explanation and are not intended to limit the implementation. Those skilled in the art will recognize that other variations or modifications can be made based on the above description. It is neither necessary nor possible to exhaustively list all possible implementations here. However, obvious variations or modifications derived therefrom are still within the scope of protection of this invention.

Claims

1. A seismic-resistant structure for subway electromechanical equipment, comprising: Base (1), fixing plate (2) installed around the base (1), and fixing bolt (3) installed on the fixing plate (2); The base (1) is used to contact the ground, and the base (1) is fixed to the ground by fixing bolts (3) on the fixing plate (2); Its characteristic is that it further includes: The vibration isolation and energy dissipation component (4) is installed on the base (1), the limiting component (5) is installed on the upper surface of the vibration isolation and energy dissipation component (4), the support component (6) is installed on the upper surface of the vibration isolation and energy dissipation component (4), and the limiting and damping component (7) is installed on the support component (6). The vibration isolation and energy dissipation component (4) is fixed to the upper surface of the base (1) by bolts. The limiting component (5) is fixed to the upper surface of the vibration isolation and energy dissipation component (4) by bolts, and the subway electromechanical device is fixed to the upper surface of the vibration isolation and energy dissipation component (4). The support component (6) is fixed to the upper surface of the vibration isolation and energy dissipation component (4) by bolts, and the vibration is reduced by the limiting and damping component (7) on the support component (6).

2. The anti-seismic structure of a subway electromechanical device according to claim 1, characterized in that, The vibration isolation and energy dissipation component (4) includes an upper mounting plate (41), a middle clamping plate (42) located below the upper mounting plate (41), a lower mounting plate (43) located below the middle clamping plate (42), a first vibration isolation part installed between the upper mounting plate (41) and the middle clamping plate (42), and a second vibration isolation part installed between the lower mounting plate (43) and the middle clamping plate (42). The upper mounting plate (41) is used to install on the subway electromechanical equipment, the lower mounting plate (43) is used to connect with the base (1), and the middle clamping plate (42) is used to connect the first vibration isolation part and the second vibration isolation part.

3. The seismic-resistant structure for subway electromechanical equipment according to claim 2, characterized in that, The middle layer sandwich plate (42) includes an upper support plate (421) installed on the first vibration isolation part, a lower support plate (422) installed on the second vibration isolation part, and a plurality of support connecting plates (423) installed between the upper support plate (421) and the lower support plate (422). The support connecting plate (423) is an X-shaped cross connecting plate, and the support connecting plate (423) is connected to the upper support plate (421) and the lower support plate (422) by U-shaped buckles.

4. The anti-seismic structure of a subway electromechanical device according to claim 2, characterized in that, The first vibration isolation unit includes two pairs of first lead-core rubber bearings (44) installed between the upper support plate (421) and the middle layer clamping plate (42) and three pairs of first viscous dampers (45) installed between the upper support plate (421) and the middle layer clamping plate (42). Two pairs of first lead-core rubber supports (44) are connected at one end to the upper support plate (421) by bolts, and at the other end of the two pairs of first lead-core rubber supports (44) are connected to the middle layer plate (42) by bolts. The two pairs of first lead-core rubber supports (44) are symmetrically distributed at the four corners of the upper support plate (421). Three pairs of first viscous dampers (45) are radially inclined to form a hexagonal symmetrical layout. The three pairs of first viscous dampers (45) are obliquely connected to the upper support plate (421) and the middle layer plate (42). The upper end of the first viscous damper (45) is fixed to the lower surface of the upper support plate (421), and the lower end of the first viscous damper (45) is fixed to the upper surface of the middle layer plate (42).

5. The anti-seismic structure of a subway electromechanical device according to claim 2, wherein The second vibration isolation unit includes two pairs of second lead-core rubber bearings (46) installed between the lower support plate (422) and the middle layer clamping plate (42) and three pairs of second viscous dampers (47) installed between the lower support plate (422) and the middle layer clamping plate (42). Two pairs of second lead-core rubber supports (46) are connected at one end to the lower support plate (422) by bolts, and at the other end of the two pairs of second lead-core rubber supports (46) are connected to the middle layer plate (42) by bolts. The two pairs of second lead-core rubber supports (46) are symmetrically distributed at the four corners of the lower support plate (422). Three pairs of second viscous dampers (47) are radially inclined to form a hexagonal symmetrical layout. The three pairs of second viscous dampers (47) are obliquely connected to the lower support plate (422) and the middle layer plate (42). The upper end of the second viscous damper (47) is fixed to the lower surface of the middle layer plate (42), and the lower end of the second viscous damper (47) is fixed to the upper surface of the lower support plate (422).

6. The anti-seismic structure of a subway electromechanical device according to claim 3, wherein The limiting component (5) includes two pairs of limiting plates (51) installed on the upper surface of the upper support plate (421); The two pairs of limiting plates (51) are bolted to the upper surface of the upper support plate (421) and the subway electromechanical device is limited and fixed by the two pairs of limiting plates (51).

7. The seismic-resistant structure for subway electromechanical equipment according to claim 3, characterized in that, The support assembly (6) includes a mounting base (61) mounted on the upper surface of the upper support plate (421), a vertical column (62) mounted on the upper surface of the mounting base (61), and a crossbeam (63) mounted on the vertical column (62). The mounting base (61) is fixed to the upper surface of the upper support plate (421) by bolts, and the mounting base (61) is located around the subway electromechanical device. The vertical column (62) is welded to the upper surface of the mounting base (61), and the crossbeam (63) is welded to the vertical column (62). The crossbeam (63) is located at 2 / 3 of the height of the subway electromechanical device.

8. The anti-seismic structure of a subway electromechanical device according to claim 3, wherein The limiting and shock-absorbing assembly (7) includes a honeycomb aluminum plate (71) installed on the vertical column (62) and the crossbeam (63) and a silicone shock-absorbing pad (72) installed on the honeycomb aluminum plate (71).

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