Bidirectional liquid shock-absorbing train track and construction method

Abstract

The invention discloses a bidirectional liquid shock-absorbing train track and a construction method, which relates to the technical field of shock-absorbing devices and solves the technical problem that the existing track shock-absorbing is too rigid and has a poor shock-absorbing effect. The track comprises a thickened cushion layer on a roadbed, a steel plate, a steel block and a concrete roadbed. A bidirectional liquid shock-absorbing device is embedded and installed on the upper surface of the thickened cushion layer. Both sides of the bidirectional liquid shock-absorbing device are connected to the roadbed through steel blocks. The inside of the bidirectional liquid shock-absorbing device is connected to a concrete roadbed through a steel plate, and a sleeper track is installed on the concrete roadbed. The concrete roadbed of the invention is connected to an inner main frame as a whole, and the internal liquid shock-absorbing device is used for shock-absorbing. The rubber block can be compressed laterally, so that the inner main frame can be displaced laterally to achieve horizontal shock-absorbing. Since the space between the shock-absorbing shell and the inner main frame is filled with liquid, the inner main frame can be automatically in a horizontal state, so that the track deformation can be avoided while achieving bidirectional shock-absorbing.

Description

Technical Field

[0001] The present invention relates to the technical field of shock absorbing equipment, and more specifically to the technical field of bidirectional liquid shock absorbing train track. Background Art

[0002] Track refers to the route paved with steel strips for trains, trams, etc. to travel on. It can also be the route for celestial bodies to move in the universe, also called trajectory; train is a number of continuous vehicles, generally refers to a train, especially a train connected in a series consisting of a traction locomotive and freight or passenger carriages; shock absorbers are used to suppress the shock caused by the rebound of the spring after shock absorption and the impact from the road surface. They are widely used in the fields of automobiles and trains to accelerate the attenuation of frame and body vibrations to improve driving smoothness; when passing over uneven roads, although the shock-absorbing spring can filter out the vibration of the road surface, the spring itself will still have reciprocating motion, and the shock absorber is used to suppress this spring jump; if the shock absorber is too soft, the body will jump up and down, and if the shock absorber is too hard, it will bring too much resistance and hinder the normal operation of the spring.

[0003] The existing track shock absorption technology has an application number CN202110500857.X, which discloses a shock-absorbing and anti-settling subway track suitable for tunnels; it includes a base and a track top plate, two rails are fixed on the top of the track top plate, and two elastic support plates are arranged between the base and the top plate; the base is provided with a plurality of groups of symmetrically arranged shock-absorbing devices, the shock-absorbing devices include a support shaft fixed to the base, a sleeve is sleeved on the end of the support shaft, the sleeve is rotatably connected to the support shaft, a plurality of spiral grooves of the same rotation direction are evenly distributed on the inner wall of the sleeve, and evenly distributed arc-shaped protrusions are fixed on the outer side of the sleeve; a transmission shaft extending into the sleeve is fixed to the lower surface of the track top plate, and a transmission rod is fixed on the circumference of the transmission shaft; a hydraulic shock-absorbing box is fixed to the base, a piston is slidably connected in the hydraulic shock-absorbing box, and a connecting rod extending out of the hydraulic shock-absorbing box and abutting against the arc-shaped protrusion is fixed to the piston; the present invention is intended to solve the problem of tunnel settlement caused by the long-term circulation of vibration loads of existing subway trains. Application No. CN201820140102.7 discloses a shock absorbing device for rail trains; it includes a bottom plate, the lower surface of the bottom plate is fixedly connected with a connecting column, the bottom of the connecting column is fixedly connected with a pressure plate, a through hole is provided on the pressure plate, a buffer groove is provided inside the middle part of the bottom plate, the inside of the buffer groove is filled with a main pressure spring, the outside of the main pressure spring is fixedly connected with a protective cover, the four corners of the upper surface of the bottom plate are fixedly connected with secondary pressure springs, the top of the secondary pressure spring is fixedly connected with an upper connecting plate, and the upper surface of the middle part of the upper connecting plate is fixedly connected with an air spring. The shock absorbing device for rail trains can better absorb and decompose the vibration of the train during operation by setting a multi-layer buffer structure, and the structure of the air spring and the traditional spring is added, the overall effect is better, and the addition of lubricating fluid avoids the occurrence of resonance. The application number CN201922352878.2 discloses an internal shock-absorbing and noise-isolating damping structure for a floating plate track isolator; it includes bolts, a shock-isolating ring, a square circular spring, an upper cover, a steel spring and a base; the shock-isolating ring and the square circular spring are arranged in the countersunk hole of the upper cover, the shock-isolating ring can be slid up and down in the countersunk hole of the upper cover, the upper end of the square circular spring is abutted against the shock-isolating ring, and the lower end of the square circular spring is abutted against the upper cover; the bolts pass through the shock-isolating ring, the square circular spring and the upper cover and are sealed and screwed to the base; the internal cavity of the base is provided with damping fluid. This application does not solidify or flow in the natural environment of -25 degrees Celsius and +80 degrees Celsius, and can have bonding functions with metal and non-metallic objects, and has stretching and natural recovery effects; it has strong bonding force, does not dry out or flow, and naturally bonds with adjacent contact parts; the damping liquid is loaded into the inside of the vibration isolator, and when the train passes, it will absorb the friction sound of the metal parts, and at the same time stretch or recover during work to play a buffering and shock-absorbing function, and has a long service life.

[0004] The existing shock absorption technology basically adopts vertical motion shock absorption, the shock absorption device is transmitted from point to surface, the vibration isolator has a short service life, and the shock absorption and impact resistance are poor. Summary of the invention

[0005] The purpose of the present invention is to solve the technical problem that the track shock absorption is too rigid and the shock absorption effect is poor. The present invention provides a bidirectional liquid shock absorption type train track.

[0006] The technical solution adopted by the present invention is as follows: a bidirectional liquid shock-absorbing train track, comprising a thickened cushion layer on a roadbed, a steel plate, a steel block, and a concrete roadbed, wherein a bidirectional liquid shock-absorbing device is embedded and installed on the upper surface of the thickened cushion layer, and both sides of the bidirectional liquid shock-absorbing device are connected to the roadbed through steel blocks, and the inside of the bidirectional liquid shock-absorbing device is connected to the concrete roadbed through a steel plate, and a sleeper track is installed on the concrete roadbed; specifically, Figure 1 As shown, the two-way liquid shock-absorbing device should be embedded in the thickened cushion layer, connected to the steel block and the roadbed on the side to constrain the movement of the two-way liquid shock-absorbing device; the concrete roadbed is not in contact with the thickened cushion layer, but is placed on the two-way liquid shock-absorbing device to achieve horizontal and vertical movement of the concrete roadbed, and the manufacturer controls the displacement range of the two-way liquid shock-absorbing device in the concrete to achieve the shock-absorbing effect; the two-way liquid shock-absorbing device includes a shock-absorbing shell and a rubber block, an inner main frame is arranged in the shock-absorbing shell, and liquid is filled between the inner main frame and the shock-absorbing shell, and the upper ends of the shock-absorbing shell are tightly connected to the rubber block respectively, and a stainless steel sheet is attached to the end of the rubber block close to the inner main frame, and the inner main frame is in close contact with the stainless steel sheet, and an injection channel is arranged on the upper side of the shock-absorbing shell, and a drainage channel is arranged on the bottom of the shock-absorbing shell; specifically, as Figure 2 As shown in the figure, the inner main frame is an integrated type, made of steel, floating on the liquid, and the contact sides are also liquid, so the inner main frame can move horizontally and vertically; the concrete roadbed is poured together with the sleepers during construction, and the concrete roadbed is placed on the steel plate. There are nuts on the side to connect the two, and the bottom of the steel plate is welded to the inner main frame, so that the concrete roadbed and the inner main frame become one, and rely on the internal liquid for shock absorption at the same time; the rubber block is ordinary rubber with strong plasticity, which does not participate in the shock absorption effect, but can be compressed laterally, so that the inner main frame can be displaced laterally to achieve horizontal shock absorption; the two-way liquid shock-absorbing device is used in areas with small temperature changes throughout the year and the annual minimum temperature is above 3°, so as to give full play to the shock-absorbing effect of the device, increase the service life, and avoid the influence of low temperature on the frost heave of the shock-absorbing liquid.

[0007] The bottom and side areas of the inner main frame in contact with the liquid are provided with a rubber layer, which is a high elastic-plastic rubber layer and is used to prevent liquid leakage.

[0008] Sawtooth bars are arranged at both ends of the inner bottom of the shock-absorbing shell, and this structure can increase the consumption of vibration energy inside the liquid.

[0009] The injection channel includes a rubber hose and a hole closed end. One end of the rubber hose is connected to the hole closed end, and the other end has an aperture that gradually becomes thinner. A triangular channel is arranged in the hole closed end. The specific liquid adding process is: the triangular pipe is inserted into the triangular channel, and the surface of the triangular channel has threads. The inserted triangular pipe can be rotated to realize the movement of the triangular pipe. The rubber hose and the hose aperture gradually become thinner toward the outlet end. The high pressure provided by the high-pressure pump flows into the shock absorbing device along the flow direction of the shock absorbing fluid. The purpose of rotating the triangular pipe is: there are holes on the surface of the triangular channel, and the holes can be rotated outward to close the holes in the hole closed end to prevent liquid from flowing out of the device. When liquid needs to be injected, the triangular channel is moved inward by rotation. After the holes completely leave the hole closed end, the high-pressure pump is turned on to inject the shock absorbing fluid. This design can effectively reduce liquid reflux, and the injection efficiency is high through high-pressure injection.

[0010] The liquid discharge channel includes a hexagonal tail end, an opening and closing piece, a threaded rotary rod, and a rubber ring. The threaded rotary rod is sequentially sleeved with the rubber ring and the opening and closing piece and then welded to the hexagonal tail end. The opening and closing piece has a liquid outlet channel in the axial direction. The opening and closing piece opens and closes the liquid outlet channel by rotating the threaded rotary rod. When in use, the liquid outlet channel rotates the hexagonal tail end through an external tool (such as a wrench) to achieve conversion between a closed state and a smooth state. The function of the rubber ring is that in the closed state, the rubber ring is in a compressed state to prevent the shock absorber fluid from leaking from the gap through the thread to the outside.

[0011] The steel plate is an L-shaped steel plate, the bottom of which is welded to the inner main frame, and the upper part is bolted to the concrete roadbed. The L-shaped steel plate connects a plurality of bidirectional liquid shock absorbing devices into a whole, so that the shock absorbing transmission effect is good and the stability is strong.

[0012] The steel block is a triangular steel block, which makes the structure more stable and facilitates the connection between the roadbed and the bidirectional liquid shock absorbing device.

[0013] A bidirectional liquid shock-absorbing train track construction method comprises the following steps:

[0014] Step 1: Level the road surface, build an embankment, pour a thickened cushion layer, and reserve a groove for embedding a bidirectional liquid shock absorbing device during pouring;

[0015] Step 2: Install the bidirectional liquid shock absorbing device in the groove, and fix the bidirectional liquid shock absorbing device on the embankment through a steel block;

[0016] Step 3: Weld the steel plate to the inner main frame of the bidirectional liquid shock absorbing device, prefabricate the concrete ballast, put the sleepers in and cast the concrete ballast as one, place the concrete ballast on the steel plate, and use nuts on the side of the bidirectional liquid shock absorbing device to connect and fix the concrete ballast and the steel plate.

[0017] In summary, due to the adoption of the above technical solution, the beneficial effects of the present invention are:

[0018] The concrete roadbed of the present invention is connected to the inner main frame as a whole, and the internal liquid is used for shock absorption. The rubber block can be compressed laterally, so that the inner main frame can be displaced laterally to achieve horizontal shock absorption. In addition, since the space between the shock absorption shell and the inner main frame is filled with liquid, the inner main frame can be automatically in a horizontal state, and while achieving two-way shock absorption, deformation of the track is avoided.

[0019] The rubber layer of the present invention is a high elastic-plastic rubber layer, which is used to prevent the leakage of the liquid;

[0020] The sawtooth bar of the present invention can increase the consumption of vibration energy inside the liquid;

[0021] The triangular hole structure in the injection hole of the present invention can prevent the liquid from flowing out of the device. When the liquid needs to be injected, the triangular hole is moved inward by rotation. After the hole completely leaves the closed end of the hole, the high-pressure pump is turned on to inject the shock-absorbing liquid. This design can effectively reduce the liquid backflow, and the injection efficiency is high through high-pressure injection.

[0022] The drainage hole of the present invention realizes the conversion of the closed state and the unblocked state with a hexagonal tail end, which is easy to operate. The rubber ring makes the drainage hole in the closed state and the rubber ring is in a compressed state to prevent the shock-absorbing fluid from leaking to the outside through the thread from the gap. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] The present invention will now be described by way of example with reference to the accompanying drawings, in which:

[0024] Figure 1 The present invention is used for a three-dimensional diagram of a rail operation system;

[0025] Figure 2 It is a schematic cross-sectional view of the main frame of the present invention;

[0026] Figure 3 It is a schematic diagram of the connection of the injection channel of the present invention;

[0027] Figure 4 is a simplified diagram of the high pressure injection system of the present invention;

[0028] Figure 5 This is a schematic diagram of the unblocked state of the liquid outlet channel of the present invention;

[0029] Figure 6 This is a schematic diagram of the closed state of the liquid outlet channel of the present invention;

[0030] Markings in the figure: 1-sleeper track, 2-concrete roadbed, 3-inner main frame, 4-rubber layer, 5-liquid, 6-rubber block, 61-stainless steel sheet, 7-serrated bar, 8-steel plate, 9-steel block, 10-thickened cushion, 11-liquid injection channel, 12-liquid discharge channel, 13-shock absorber shell, 111-triangular channel, 112-rubber hose, 113-shock absorber liquid flow direction, 114-hole closed end, 115-triangular pipe, 116-connecting pipe, 117-high-pressure pump, 121-hexagonal tail end, 122-opening and closing parts, 123-liquid outlet channel, 124-threaded rotary rod, 125-rubber ring. DETAILED DESCRIPTION

[0031] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Generally, the components of the embodiments of the present invention described and shown in the drawings here can be arranged and designed in various different configurations.

[0032] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the invention claimed for protection, but merely represents selected embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0033] Example 1

[0034] like Figure 1-6 As shown in the figure, the present embodiment provides a thickened cushion layer 10 on the roadbed, a steel plate 8, a steel block 9, and a concrete roadbed 2. A bidirectional liquid shock absorbing device is embedded and installed on the upper surface of the thickened cushion layer 10. Both sides of the bidirectional liquid shock absorbing device are connected to the roadbed through the steel block 9. The inside of the bidirectional liquid shock absorbing device is connected to the concrete roadbed 2 through the steel plate 8. The sleeper track 1 is installed on the concrete roadbed 2. Specifically, as shown in FIG. Figure 1As shown, the bidirectional liquid shock absorbing device should be embedded in the thickened cushion layer 10, connected to the steel block 9 on the side, and connected to the roadbed to constrain the movement of the bidirectional liquid shock absorbing device; the concrete roadbed 2 and the thickened cushion layer 10 are not in contact with each other, but are placed on the bidirectional liquid shock absorbing device to achieve horizontal and vertical movement of the concrete roadbed 2, and the manufacturer controls the displacement range of the bidirectional liquid shock absorbing device in the concrete to achieve the shock absorbing effect; the bidirectional liquid shock absorbing device includes a shock absorbing shell 13 and a rubber block 6, an inner main frame 3 is arranged in the shock absorbing shell 13, and liquid 5 is filled between the inner main frame 3 and the shock absorbing shell 13, and the upper ends of the shock absorbing shell 13 are respectively tightly connected to the rubber block 6, and the rubber block 6 is located at the end close to the inner main frame 3 and a stainless steel sheet 61 is attached, and the inner main frame 3 is in close contact with the stainless steel sheet 61, and the upper side of the shock absorbing shell 13 is provided with a liquid injection channel 11, and the bottom of the shock absorbing shell 13 is provided with a liquid discharge channel 12; specifically, as Figure 2 As shown in the figure, the inner main frame 3 is an integrated type, made of steel, floating on the liquid 5, and the contact sides are also liquid 5, so the inner main frame 3 can move horizontally and vertically; the concrete roadbed 2 is poured together with the sleepers during construction, and the concrete roadbed 2 is placed on the steel plate 8. There are nuts on the side to connect the two. The bottom of the steel plate 8 is welded to the inner main frame 3, so that the concrete roadbed 2 and the inner main frame 3 become one, and rely on the internal liquid 5 for shock absorption at the same time; the rubber block 6 is ordinary rubber with strong plasticity. It does not participate in the shock absorption effect, but can be compressed laterally. The inner main frame 3 is in close contact with the rubber block 6 through the stainless steel sheet 61, so that the inner main frame 3 can be displaced laterally and vertically to achieve horizontal and vertical bidirectional shock absorption; the bidirectional liquid shock absorbing device is used in areas with small temperature changes throughout the year and the annual minimum temperature is above 3°, so as to give full play to the shock absorption effect of the device, increase the service life, and avoid the influence of low temperature on the frost heave of the shock absorbing liquid 5.

[0035] Example 2

[0036] On the basis of Example 1, a rubber layer 4 is provided at the bottom and side areas of the inner main frame 3 in contact with the liquid 5. The rubber layer 4 is a high elastic-plastic rubber layer 4 for preventing the liquid 5 from leaking.

[0037] Example 3

[0038] On the basis of Example 1, sawtooth bars 7 are provided at both ends of the inner bottom of the shock-absorbing shell 13 . This structure can increase the consumption of vibration energy inside the liquid 5 .

[0039] Example 4

[0040] On the basis of Example 1, the injection channel 11 includes a rubber hose 112 and a hole closed end 114. The hole closed end 114 is provided at one end of the rubber hose 112, and the aperture of the other end of the rubber hose 112 gradually becomes thinner. A triangular channel 111 is provided in the hole closed end 114. The specific liquid adding process is as follows: the triangular pipe 115 is inserted into the triangular channel 111, and the surface of the triangular channel 111 is threaded, and the inserted triangular pipe 115 can be rotated to realize the movement of the triangular pipe 115. The rubber hose 112, the hose aperture gradually decreases toward the outlet end. The high pressure provided by the high-pressure pump 117 flows into the shock absorbing device along the flow direction 113 of the shock absorbing fluid. The purpose of rotating the triangular pipe 115 is that: the surface of the triangular channel 111 has holes, which can be rotated outward to close the holes in the hole closed end 114 to prevent the liquid 5 from flowing out of the device. When the liquid 5 needs to be injected, the triangular channel 111 is moved inward by rotation. After the holes completely leave the hole closed end 114, the high-pressure pump 117 is turned on to inject the shock absorbing fluid. This design can effectively reduce the reflux of the liquid 5, and through high-pressure injection, the injection efficiency is high.

[0041] Example 5

[0042] On the basis of Example 1, the discharge channel 12 includes a hexagonal tail end 121, an opening and closing piece 122, a threaded rotary rod 124, and a rubber ring 125. The threaded rotary rod 124 is sequentially sleeved with the rubber ring 125 and the opening and closing piece 122 and then welded to the hexagonal tail end 121. The opening and closing piece 122 is provided with a liquid outlet channel 123 in the axial direction. The opening and closing piece 122 opens and closes the liquid outlet channel 123 by rotating the threaded rotary rod 124. When in use, the liquid outlet channel 123 is rotated by an external tool (such as a wrench) through the hexagonal tail end 121 to achieve the conversion between the closed state and the unblocked state. The function of the rubber ring 125 is that in the closed state, the rubber ring 125 is in a compressed state to prevent the shock absorber fluid from leaking to the outside through the thread from the gap.

[0043] Example 6

[0044] On the basis of Example 1, the steel plate 8 is an L-shaped steel plate 8, the bottom of the steel plate 8 is welded to the inner main frame 3, the upper part of the steel plate 8 is bolted to the concrete roadbed 2, and the L-shaped steel plate 8 connects a plurality of bidirectional liquid shock absorbing devices into a whole.

[0045] Example 7

[0046] On the basis of Example 1, the steel block is a triangular steel block, which makes the structure more stable and facilitates the connection between the roadbed and the bidirectional liquid shock absorbing device.

[0047] Application Example 1

[0048] Using any track of Examples 1-7, a bidirectional liquid shock-absorbing train track construction method comprises the following steps:

[0049] Step 1: level the road surface, build the embankment, pour the thickened cushion layer 10, and reserve a groove for embedding the bidirectional liquid shock absorbing device during pouring;

[0050] Step 2: Install the bidirectional liquid shock absorbing device in the groove and fix the bidirectional liquid shock absorbing device on the embankment through the steel block 9.

[0051] Step 3, weld the steel plate 8 to the inner main frame 3 of the bidirectional liquid shock absorbing device, prefabricate the concrete roadbed 2, put the sleepers and the concrete roadbed 2 into one, place the concrete roadbed 2 on the steel plate 8, and use nuts on the side of the bidirectional liquid shock absorbing device to connect and fix the concrete roadbed 2 and the steel plate 8. After installing the track, the construction is completed.

Claims

1. A bidirectional liquid shock-absorbing train track, comprising a thickened cushion layer (10) on a roadbed, a steel plate (8), a steel block (9), and a concrete ballast bed (2), characterized in that: A bidirectional liquid shock absorbing device is embedded and installed on the upper surface of the thickened cushion layer (10), and the two sides of the bidirectional liquid shock absorbing device are connected to the roadbed through steel blocks (9). The interior of the bidirectional liquid shock absorbing device is connected to a concrete roadbed (2) through steel plates (8), and a sleeper track (1) is installed on the concrete roadbed (2); the bidirectional liquid shock absorbing device comprises a shock absorbing shell (13) and a rubber block (6); an inner main frame (3) is arranged inside the shock absorbing shell (13), and liquid (5) is filled between the inner main frame (3) and the shock absorbing shell (13); the upper ends of the shock absorbing shell (13) are respectively tightly connected to the rubber block (6); a stainless steel sheet (61) is attached to the end of the rubber block (6) located close to the inner main frame (3), and the inner main frame (3) is in close contact with the stainless steel sheet (61); a liquid injection channel (11) is arranged on the upper side of the shock absorbing shell (13), and a liquid discharge channel (12) is arranged at the bottom of the shock absorbing shell (13); A rubber layer (4) is provided on the bottom and side surfaces of the inner main frame (3) in areas in contact with the liquid (5); The steel plate (8) is an L-shaped steel plate (8), the bottom of the steel plate (8) is welded to the inner main frame (3), and the upper part of the steel plate (8) is bolted to the concrete ballast (2).

2. A bidirectional liquid damping train track according to claim 1, characterized in that: Sawtooth strips (7) are provided at both ends of the inner bottom of the shock-absorbing housing (13).

3. A bidirectional liquid damping train track according to claim 1, characterized in that: The injection channel (11) comprises a rubber hose (112) and a hole closed end (114); one end of the rubber hose (112) is connected to the hole closed end (114); the hole diameter of the other end of the rubber hose (112) gradually becomes thinner; and a triangular channel (111) is provided in the hole closed end (114).

4. A bidirectional liquid damping train track according to claim 1, characterized in that: The liquid discharge channel (12) comprises a hexagonal tail end (121), an opening and closing member (122), a liquid discharge channel (123), a threaded rotating rod (124), and a rubber ring (125); the threaded rotating rod (124) is sequentially sleeved with the rubber ring (125) and the opening and closing member (122) and then welded to the hexagonal tail end (121); and the opening and closing member (122) is provided with a liquid discharge channel (123) in an axial direction.

5. The bidirectional liquid damping train track according to claim 1, characterized in that: The steel block (9) is a triangular steel block.

6. A method for constructing a bidirectional liquid shock-absorbing train track, using the bidirectional liquid shock-absorbing train track described in any one of claims 1 to 5, characterized in that: The steps include: Step 1: leveling the road surface, building an embankment, pouring a thickened cushion layer (10), and reserving a groove for embedding a bidirectional liquid shock absorbing device during pouring; Step 2: Install a bidirectional liquid shock absorbing device in the groove, and fix the bidirectional liquid shock absorbing device on the embankment through a steel block (9); Step 3: Weld the steel plate (8) onto the inner main frame (3) of the bidirectional liquid shock absorbing device, prefabricate the concrete ballast, put the sleepers into it and cast it into one piece with the concrete ballast, place the concrete ballast (2) on the steel plate (8), and connect and fix the concrete ballast (2) and the steel plate (8) with nuts on the side of the bidirectional liquid shock absorbing device.

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