CN114481715A - A kind of two-way liquid damping type train track and construction method - Google Patents

Abstract

The invention discloses a bidirectional liquid shock-absorbing train track and a construction method, relates to the technical field of shock-absorbing devices, and solves the technical problems of over-rigidity and poor shock-absorbing effect of the existing track; the concrete track bed and the inner main frame are connected into a whole, and the rubber block can be transversely compressed through damping of the internal liquid, so that the inner main frame can transversely displace to realize horizontal damping; and because the liquid is filled between the damping shell and the inner main frame, the inner main frame can be automatically in a horizontal state, and the deformation of the track is avoided while the bidirectional damping is realized.

Description

A kind of two-way liquid damping type train track and construction method

technical field

The invention relates to the technical field of shock absorption equipment, and more particularly to the technical field of a two-way liquid shock absorption type train track.

Background technique

A track refers to a route made of strip-shaped steel for trains, trams, etc. It can also be a route for celestial bodies to run in the universe, also called a trajectory; a train is a number of continuous vehicles, generally referring to trains, especially those driven by traction A train consisting of a locomotive and a freight or passenger carriage; a shock absorber is used to suppress the shock when the spring rebounds after shock absorption and the impact from the road surface. It is widely used in automobiles and trains and other fields to accelerate Attenuate the vibration of the frame and the body to improve the ride comfort; when passing through uneven roads, although the shock-absorbing spring can filter the vibration of the road, the spring itself will also have a 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 prevent the spring from working properly.

There is a shock-absorbing and anti-settling subway track suitable for tunnels disclosed with application number CN202110500857.X about the track shock absorption technology; it includes a base and a track top plate, two rails are fixed on the top of the track top plate, and a set of rails is arranged between the base and the top plate. There are two elastic support plates; the base is provided with several sets of symmetrically arranged shock absorbing devices, the shock absorbing devices include a support shaft fixed on the base, the end of the support shaft is sleeved with a sleeve, and the sleeve rotates Connected to the support shaft, the inner wall of the sleeve is evenly distributed with a number of spiral grooves with the same rotation direction, and the outer side of the sleeve is fixed with evenly distributed arc-shaped protrusions; the lower surface of the track top plate is fixed with a transmission shaft extending into the sleeve , a transmission rod is fixed around the transmission shaft; a hydraulic shock-absorbing box is fixed on the base, a piston is slidably connected in the hydraulic shock-absorbing box, and the piston is fixed with a connecting rod extending out of the hydraulic shock-absorbing box and opposing the arc-shaped protrusion; The present invention is intended to solve the problem of tunnel settlement caused by the long-term cycle of vibration loads of existing subway trains. Application No. CN201820140102.7 discloses a shock absorbing device for rail trains; it includes a bottom plate, a connecting column is fixedly connected to the lower surface of the bottom plate, and a pressure-bearing plate is fixedly connected to the bottom of the connecting column. A through hole is formed on the pressure-bearing plate, a buffer groove is formed in the middle of the bottom plate, the inside of the buffer groove is filled with a main pressure-bearing spring, and a protective sleeve is fixedly connected to the outside of the main pressure-bearing spring. Auxiliary pressure springs are fixedly connected to the four corners of the upper surface of the bottom plate, an upper connecting plate is fixedly connected to the top of the auxiliary pressure spring, and an air spring is fixedly connected to the upper surface of the middle of the upper connecting plate. The shock absorption device for rail trains can better absorb and decompose the vibration of the train by setting up a multi-layer buffer structure, and adding a structure in which the air spring and the traditional spring cooperate, the overall effect is better , and the addition of lubricating fluid avoids the occurrence of resonance. Application No. CN201922352878.2 discloses a shock-absorbing, noise-isolating and damping structure in a vibration isolator for a floating plate track; including bolts, shock-isolating rings, square-shaped circular springs, upper covers, steel springs and bases; shock-isolating rings and square-shaped circular The spring is arranged in the countersunk hole of the upper cover, and the shock isolation ring is slidable up and down in the countersunk hole of the upper cover. The vibration isolation ring, the square-shaped circular spring, the upper cover and the base are sealed and screwed and fixed; the inner cavity of the base is provided with damping fluid. The application does not solidify and does not flow under the natural environment of minus 25 degrees and 80 degrees above zero, and has the function of bonding with metal and non-metallic objects, and has the effect of stretching and natural recovery; strong adhesion, non-drying It is solid and does not flow, and is naturally bonded to the adjacent contact parts; the damping fluid is placed inside the vibration isolator, 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 buffer and dampen function and long service life.

The prior art shock absorption 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

The purpose of the present invention is: in order to solve the technical problem that the track damping is too rigid and the damping effect is poor, the present invention provides a two-way liquid damping type train track.

The technical scheme adopted by the present invention is as follows: a two-way liquid damping type train track, comprising a thickened cushion on the roadbed, a steel plate, a steel block and a concrete ballast bed, and the upper surface of the thickened cushion is embedded and installed with a two-way liquid damping device, the two sides of the two-way liquid shock absorption device are connected to the roadbed through steel blocks, the inside of the two-way liquid shock absorption device is connected to a concrete track bed through a steel plate, and a sleeper track is installed on the concrete track bed; specifically, as shown in Figure 1 , the two-way liquid damping device should be embedded in the thickened cushion, and the side is connected with the steel block and the roadbed to restrict the movement of the two-way liquid damping device; there is no contact between the concrete ballast bed and the thickened cushion, but is placed on the Above the two-way liquid damping device, the horizontal and vertical movement of the concrete ballast bed is realized, and the damping effect is realized by adjusting the displacement range of the two-way liquid damping device in the concrete by the manufacturer; the two-way liquid damping device includes a damping shell The shock absorbing shell is provided with an inner main frame, the inner main frame and the shock absorbing shell are filled with liquid, the upper two ends of the shock absorbing shell are respectively tightly connected with the rubber block, the The end of the rubber block near the inner main frame is attached with a stainless steel sheet, and the inner main frame is in close contact with the stainless steel sheet. The upper side of the shock absorbing shell is provided with a liquid injection hole, and the bottom of the shock absorbing shell is provided with a liquid drainage hole ; Specifically, as shown in Figure 2, the inner main frame in the figure is integrated, the material is steel, floating on the liquid, the two sides are also in contact with the liquid, and the inner main frame can move horizontally and vertically; the construction of the concrete track bed When pouring together with sleepers, the concrete ballast bed is placed on the steel plate, and there are nuts on the side to connect the two. The bottom of the steel plate is welded with the inner main frame, so that the concrete ballast bed and the inner main frame are integrated, and simultaneously rely on the internal liquid for shock absorption; the rubber block is Ordinary rubber, with strong plasticity, does not participate in shock absorption, but can compress laterally, so that the inner main frame can be displaced laterally to achieve horizontal shock absorption; this two-way liquid shock absorption device is used for small temperature changes throughout the year and annual minimum temperature of 3° or more. In some regions, the shock absorption effect of the device should be fully utilized, and the service life should be increased to avoid the frost heave effect of low temperature on the shock absorption liquid.

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

Both ends of the inner bottom of the shock absorbing housing are provided with sawtooth strips, and this structure can increase the consumption of vibration energy inside the liquid.

The liquid injection channel includes a rubber hose and a closed end of the hole. One end of the rubber hose is connected to the closed end of the hole, and the other end has a gradually tapered aperture. The closed end of the hole is provided with a triangular channel. The specific liquid addition process is as follows: The triangular pipe is inserted into the triangular hole, the surface of the triangular hole is threaded, and the inserted triangular pipe can be rotated to realize the movement of the triangular pipe. The liquid flow direction flows into the shock absorber. The purpose of rotating the triangular pipe is: there are holes on the surface of the triangular channel, and the hole can be closed in the closed end of the hole by rotating outward to prevent the liquid from flowing out of the device. Move inward, after the hole completely leaves the closed end of the hole, then turn on the high-pressure pump to inject shock absorber fluid. This design can effectively reduce the liquid backflow, and through high-pressure injection, the injection efficiency is high.

The drainage channel includes a hexagonal tail end, an opening and closing piece, a threaded rod, and a rubber ring. There is a liquid outlet channel in the axial direction of the closing member. The opening and closing member opens and closes the liquid outlet channel by rotating the screw rod. When in use, the liquid outlet channel rotates the hexagonal tail end through an external tool (wrench) to achieve a closed state. The function of the rubber ring is: in the closed state, the rubber ring is in a compressed state to prevent the shock absorbing fluid from leaking from the gap to the outside through the thread.

The steel plate is an L-shaped steel plate, the bottom of the steel plate is welded with the inner main frame, and the upper part is connected with the concrete ballast bed bolts. The L-shaped steel plate connects several two-way liquid shock absorption devices as a whole, so that the shock absorption transmission effect is good and the stability is strong. .

The steel block is a triangular steel block, which makes the structure more stable and facilitates the connection between the roadbed and the connecting two-way liquid damping device.

A two-way liquid damping type train track construction method, comprising the following steps:

Step 1. Level the road surface, build the embankment, pour the thickened cushion layer, and reserve the groove embedded in the two-way liquid shock absorption device during pouring;

Step 2. Install the two-way liquid shock absorber in the groove, and fix the two-way liquid shock absorber on the embankment through the steel block;

Step 3: Weld the steel plate on the inner main frame of the two-way liquid damping device, prefabricate the concrete ballast, put in the sleepers and pour the concrete ballast into one, the concrete ballast is placed on the steel plate, and the side of the two-way liquid damping device is nutted against the concrete. The track bed is connected and fixed with the steel plate.

To sum up, due to the adoption of the above technical solutions, the beneficial effects of the present invention are:

The concrete ballast bed of the invention is connected with the inner main frame as a whole, and the internal liquid damps the shock, and the rubber blocks can be compressed laterally, so that the inner main frame can be displaced laterally to achieve horizontal shock absorption; Filled with liquid, the inner main frame can be automatically in a horizontal state, which can avoid the deformation of the track while realizing two-way shock absorption;

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

The sawtooth bar of the invention can increase the consumption of vibration energy inside the liquid;

The triangular channel structure in the liquid injection channel of the present invention can prevent the liquid from flowing out of the device. When the liquid needs to be injected, the triangular channel can be moved inward by rotation. Effectively reduce liquid backflow, and through high-pressure injection, the injection efficiency is high;

The liquid discharge channel of the invention realizes the conversion between the closed state and the unblocked state, and the hexagonal end is convenient to operate, and the rubber ring keeps the liquid discharge channel in the closed state, and the rubber ring is in a compressed state, preventing the shock absorption fluid from passing through the thread from the gap to the direction External leaks.

Description of drawings

The invention will be described by way of example and with reference to the accompanying drawings, in which:

Fig. 1 is a three-dimensional view of the present invention for a rail operation system;

2 is a schematic cross-sectional view of the main frame in the present invention;

Fig. 3 is the schematic diagram of the junction of the liquid injection hole of the present invention;

4 is a schematic diagram of the high-pressure injection system of the present invention;

Fig. 5 is the schematic diagram of the unobstructed state of the liquid outlet hole of the present invention;

Fig. 6 is the schematic diagram of the closed state of the liquid outlet channel of the present invention;

Marked in the picture: 1- sleeper track, 2- concrete ballast bed, 3- inner main frame, 4- rubber layer, 5- liquid, 6- rubber block, 61- stainless steel sheet, 7- sawtooth strip, 8- steel plate, 9- Steel block, 10-Thickening cushion, 11-Filling port, 12-Draining port, 13-Draining shell, 111-Triangular port, 112-Rubber hose, 113-Draining fluid flow direction, 114- Hole closed end, 115-triangular pipe, 116-connecting pipe, 117-high pressure pump, 121-hexagonal end, 122-opening and closing piece, 123-liquid outlet, 124-threaded rod, 125-rubber ring.

Detailed ways

In order to make the purposes, 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 with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments These are some embodiments of the present invention, but not all embodiments. The components of the embodiments of the invention generally described and illustrated in the drawings herein may be arranged and designed in a variety of different configurations.

Thus, the following detailed description of the embodiments of the invention provided in the accompanying drawings is not intended to limit the scope of the invention as claimed, but is merely representative of selected embodiments of the invention. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

Example 1

As shown in FIGS. 1-6 , this embodiment provides a thickened cushion layer 10 on the roadbed, a steel plate 8 , a steel block 9 , and a concrete ballast bed 2 . The upper surface of the thickened cushion layer 10 is embedded and installed with two-way liquid shock absorption device, the two sides of the two-way liquid damping device are connected with the roadbed through steel blocks 9, the interior of the two-way liquid damping device is connected with a concrete track bed 2 through a steel plate 8, and a sleeper track 1 is installed on the concrete track bed 2; Specifically, As shown in Figure 1, the two-way liquid damping device should be embedded in the thickened cushion 10, and the side is connected to the steel block 9 and the roadbed to constrain the movement of the two-way liquid damping device; the concrete track bed 2 and the thickened cushion 10 There is no contact between them, but they are placed on the two-way liquid shock absorption device to realize the horizontal and vertical movement of the concrete ballast bed 2, and the shock absorption effect is achieved by adjusting the displacement range of the two-way liquid shock absorption device in the concrete by the manufacturer; The two-way liquid damping device includes a damping housing 13 and a rubber block 6 . An inner main frame 3 is arranged in the damping housing 13 , and a liquid 5 is filled between the inner main frame 3 and the damping housing 13 . The upper two ends of the shock absorbing housing 13 are respectively tightly connected with the rubber block 6, the rubber block 6 is located near the inner main frame 3 and the stainless steel sheet 61 is attached to the end, and the inner main frame 3 is in close contact with the stainless steel sheet 61, so The upper side of the damping housing 13 is provided with a liquid injection channel 11, and the bottom of the damping housing 13 is provided with a liquid drain channel 12; The material is steel, which floats on the liquid 5, and the two sides are also in contact with the liquid 5. The inner main frame 3 can move horizontally and vertically; the concrete ballast bed 2 is poured together with sleepers during construction, and the concrete ballast bed 2 is placed on the steel plate 8. There is a nut on the side to connect the two, the bottom of the steel plate 8 is welded with the inner main frame 3, so that the concrete ballast bed 2 and the inner main frame 3 are integrated, synchronously relying on the internal liquid 5 for shock absorption; the rubber block 6 is ordinary rubber, which has strong plasticity and does not participate in 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 horizontally and vertically to achieve horizontal and vertical two-way shock absorption; the two-way liquid shock absorption device is used for In areas where the annual temperature changes are small and the annual minimum temperature is above 3°, the shock absorption effect of the device can be fully exerted, and the service life can be increased to avoid the impact of low temperature on the frost heave of the shock absorption liquid 5.

Example 2

On the basis of Example 1, the bottom and side surfaces of the inner main frame 3 are provided with a rubber layer 4 in the area in contact with the liquid 5 .

Example 3

On the basis of Embodiment 1, sawtooth strips 7 are provided on both ends of the inner bottom of the shock absorbing housing 13 , and this structure can increase the consumption of vibration energy inside the liquid 5 .

Example 4

On the basis of Example 1, the liquid injection channel 11 includes a rubber hose 112 and a hole closed end 114. One end of the rubber hose 112 is provided with a hole closed end 114, and the other end of the rubber hose 112 has a gradually thinner aperture. The closed end 114 of the hole is provided with a triangular channel 111; the specific liquid adding process is as follows: the triangular pipeline 115 is inserted into the triangular channel 111, the surface of the triangular channel 111 is threaded, and the inserted triangular pipeline 115 can be rotated to realize the movement of the triangular pipeline 115, and the rubber In the hose 112, the diameter of the hose gradually becomes thinner toward the outlet end, and the high pressure provided by the high-pressure pump 117 flows into the shock absorber along the flow direction 113 of the shock absorber fluid. The hole can be closed in the hole closed end 114 by rotating and moving outward to prevent the liquid 5 from flowing out of the device. When the liquid 5 needs to be injected, the triangular channel 111 can be moved inward by rotation. After the hole completely leaves the hole closed end 114, the high pressure pump is turned on again. 117 to inject shock absorption liquid, this design can effectively reduce the backflow of liquid 5, and through high-pressure injection, the injection efficiency is high.

Example 5

On the basis of Example 1, the drainage channel 12 includes a hexagonal end 121, an opening and closing member 122, a threaded rod 124, and a rubber ring 125. The threaded rod 124 is connected to the rubber ring 125, the opening and closing in turn The opening and closing member 122 is sleeved and then welded with the hexagonal tail end 121. The opening and closing member 122 is provided with a liquid outlet channel 123 in the axial direction. When in use, the liquid outlet channel 123 rotates the hexagonal end 121 through an external tool (wrench) to realize the conversion between the closed state and the unblocked state. The function of the rubber ring 125 is: in the closed state, the rubber ring 125 is in a compressed state, Prevent shock absorber fluid from leaking to the outside through the thread.

Example 6

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 with the inner main frame 3, the upper part of the steel plate 8 is bolted to the concrete ballast bed 2, and the L-shaped steel plate 8 reduces a number of bidirectional liquids. The vibration device is connected as a whole.

Example 7

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 connecting two-way liquid damping device.

Application example 1

Applying any track of Examples 1-7, a method for constructing a two-way liquid shock-absorbing train track, comprising the following steps:

Step 1, leveling the road surface, building the embankment, pouring the thickened cushion layer 10, and reserving a groove for embedding the two-way liquid shock absorption device during pouring;

Step 2: Install the two-way liquid shock absorber in the groove, and fix the two-way liquid shock absorber on the embankment through the steel block 9 .

Step 3: Weld the steel plate 8 on the inner main frame 3 with the two-way liquid damping device, prefabricate the concrete ballast 2, put the sleepers into the concrete ballast 2 and cast as one, the concrete ballast 2 is placed on the steel plate 8, and the two-way liquid damping device The side of the concrete ballast bed 2 and the steel plate 8 are connected and fixed with nuts, and the construction is completed after the track is installed.

Claims (8)

1. A bidirectional liquid damping type train track comprises a thickening cushion layer (10) on a roadbed, a steel plate (8), a steel block (9) and a concrete track bed (2), and is characterized in that a bidirectional liquid damping device is embedded in the upper surface of the thickening cushion layer (10), two sides of the bidirectional liquid damping device are connected with the roadbed through the steel block (9), the inside of the bidirectional liquid damping device is connected with the concrete track bed (2) through the steel plate (8), and a sleeper track (1) is installed on the concrete track bed (2); two-way liquid damping device includes shock attenuation casing (13), rubber block (6), be provided with interior body frame (3) in shock attenuation casing (13), it has liquid (5) to fill between this interior body frame (3) and shock attenuation casing (13), the upper portion both ends of shock attenuation casing (13) respectively with rubber block (6) zonulae occludens, this end that this rubber block (6) are located to be close to interior body frame (3) is pasted stainless steel sheet (61), interior body frame (3) and stainless steel sheet (61) in close contact with, the upside of shock attenuation casing (13) is provided with annotates liquid pore (11), and the bottom of shock attenuation casing (13) is provided with flowing back pore (12).

2. A two-way fluid-damped train track according to claim 1, wherein the bottom and side of the inner frame (3) are provided with rubber layers (4) in the areas contacting the fluid (5).

3. The bidirectional fluid shock-absorbing train track according to claim 1, wherein both ends of the inside bottom of the shock-absorbing shell (13) are provided with saw-tooth bars (7).

4. The two-way liquid damping type train track according to claim 1, wherein the liquid injection hole channel (11) comprises a rubber hose (112) and a hole closed end (114), one end of the rubber hose (112) is connected with the hole closed end (114), the aperture of the other end of the rubber hose (112) is gradually reduced, and a triangular hole channel (111) is arranged in the hole closed end (114).

5. The bidirectional liquid damping type train track as claimed in claim 1, wherein the liquid discharge duct (12) comprises a hexagonal tail end (121), an opening and closing member (122), a liquid discharge duct (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 with the hexagonal tail end (121), and the liquid discharge duct (123) is formed in the axial direction of the opening and closing member (122).

6. The bidirectional fluid shock-absorbing train track according to claim 1, wherein 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 track bed (2).

7. A two-way liquid shock absorbing train track according to claim 1, characterized in that the steel block (9) is a triangular steel block.

8. A bidirectional liquid damping type train track construction method applies any one of the claims 1 to 7 to the bidirectional liquid damping type train track, and is characterized by comprising the following steps:

leveling a road surface, building an embankment, pouring a thickened cushion layer (10), and reserving a groove for embedding a bidirectional liquid damping device during pouring;

step two, installing a bidirectional liquid damping device in the groove, and fixing the bidirectional liquid damping device on the embankment through a steel block (9);

and thirdly, welding a steel plate (8) on the inner main frame (3) of the bidirectional liquid damping device, prefabricating a concrete track bed, putting sleepers and the concrete track bed into the concrete track bed to be poured into a whole, arranging the concrete track bed (2) on the steel plate (8), and connecting and fixing the concrete track bed (2) and the steel plate (8) by using nuts on the side surface of the bidirectional liquid damping device.

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