CN116397467A - A lateral limit type vibration damping fastener system and its installation method - Google Patents

Abstract

The invention discloses a transverse limiting type vibration damping fastener system and an installation method thereof, wherein the fastener system comprises a sleeper and an embedded sleeve arranged in the sleeper, an insulating buffer base plate is paved on the sleeper, a vibration damper assembly formed by connecting an upper iron base plate, a middle vibration damping base plate, a lower iron base plate and a limiting block into a whole through connecting sleeves is paved on the insulating buffer base plate, a distance adjusting fastener is arranged on the vibration damper assembly, an anchor bolt penetrates through a spring washer, a distance adjusting buckle plate, the vibration damper assembly and the insulating buffer base plate to be connected with the embedded sleeve, a rail lower base plate is paved on the upper iron base plate, a steel rail is paved on the rail lower base plate, insulating gauge blocks are installed on two sides of the steel rail, and the steel rail is buckled on the upper iron base plate through elastic strips. The invention provides the vibration-damping fastener with low vertical rigidity and high transverse rigidity, which not only can effectively reduce the vibration and noise of a steel rail, but also can facilitate the installation and maintenance of the fastener, and simultaneously ensures the transverse stability of a fastener system.

Description

A lateral limit type vibration damping fastener system and its installation method

technical field

The invention relates to a transverse position-limiting vibration-damping fastener system and an installation method thereof.

Background technique

Rail transit has brought great convenience to people's travel, but its noise and vibration problems have also brought great troubles to the lives of surrounding residents. Therefore, vibration reduction and noise reduction has become an urgent problem in the construction of rail transit. The use of vibration reduction fasteners is one of the effective measures to alleviate rail vibration and noise.

At present, the commonly used double-layer vibration-damping fasteners on the market mostly use elastic backing plates to reduce the vertical stiffness of the fasteners, so that the fasteners have a certain vibration-damping effect. However, while the fastener system reduces the vertical stiffness, it also weakens the lateral strength, which leads to the increase of the dynamic gauge when the train passes, and the serpentine movement of the wheels, which affects the driving safety. At the same time, it is easy to cause rail corrugation and greatly increases the workload of operation and maintenance. .

Contents of the invention

In order to overcome the above-mentioned shortcomings of the prior art, the present invention proposes a laterally limited vibration-absorbing fastener system and its installation method, so that the fastener has a relatively high lateral rigidity while having a relatively low vertical rigidity, which can effectively Reduce noise and rail wear during operation.

The technical solution adopted by the present invention to solve its technical problems is: a laterally limited vibration-damping fastener system, including a sleeper and a pre-embedded bushing arranged in the sleeper, an insulating buffer pad is laid on the sleeper, and an insulating buffer Lay the shock absorber assembly formed by connecting the upper iron backing plate, the middle damping backing plate, the lower iron backing plate and the limit block through the connecting sleeve on the backing plate, and place the adjustable distance fastener on the shock absorber assembly, and anchor The bolts pass through the spring washer, distance adjustment buckle plate, shock absorber assembly and insulating buffer plate to connect with the embedded casing, lay the under-rail plate on the upper iron plate, lay the steel rail on the under-rail plate, and Insulating gauge blocks are installed on both sides, and the rail is buckled and pressed on the upper iron backing plate through elastic strips.

The present invention also provides a method for installing a laterally limited vibration-damping fastener system, which includes the following steps:

Step 1. Assemble the shock absorber assembly:

(1) Place the limit block on the shoulder of the lower iron backing plate, make the inclined side of the limit block fit the inner side of the shoulder of the lower iron backing plate, and the boss of the limit block is stuck on the shoulder of the lower iron backing plate Between the two stoppers on the top surface;

(2) Place the middle damping backing plate on the lower iron backing plate, so that the inner wall of the small hole of the middle damping backing plate just passes through the limit column of the lower iron backing plate;

(3) Place the upper iron backing plate on the middle damping backing plate, make the through hole of the upper iron backing plate pass through the limit column of the lower iron backing plate, and make the side of the upper iron backing Block side fit;

(4) Align the inner hole wall of the connecting sleeve with the straight edge of the upper boss on the limit post of the lower iron backing plate, and then pass the connecting sleeve through the limit post so that the bottom surface of the flange platform of the connecting sleeve is aligned with the upper iron pad The top surface of the plate is in contact; a vertical downward force is given to the upper iron backing plate to make the middle damping backing plate in a compressed state, and then the connection sleeve is rotated 90° to unload the force loaded on the upper iron backing plate. At this time, the connection sleeve The upper surface of the lock column platform is in contact with the lower surface of the upper boss of the lower iron backing plate, the bottom surface of the connecting sleeve flange is in contact with the top surface of the upper iron backing plate, and the inner hole wall of the connecting sleeve fits the outer wall of the limiting column , the outer circular wall of the connecting sleeve fits the inner wall of the through hole of the upper iron backing plate;

Step 2. Lay the insulating cushion plate on the sleeper, lay the shock absorber assembly assembled in step 1 on the insulating cushion plate, and make the center of the oblong hole of the lower iron plate align with the embedded casing in the sleeper ;

Step 3. Place the distance-adjustable buckle on the shock absorber assembly, make the tooth shape of the distance-adjustable buckle plate mesh with the tooth shape on the limit post, and place the limit boss of the distance-adjustable buckle plate on the connecting sleeve and In the limit groove set on the limit post;

Step 4. Put the anchor bolts on the spring washers, pass through the distance adjustment fasteners, shock absorber components and insulating buffer plates, and screw them into the embedded casing of the sleeper;

Step 5. Lay the under-rail backing plate on the upper iron backing plate of the shock absorber assembly, lay the rail on the under-rail backing plate, install insulating gauge blocks on both sides of the rail, and finally use elastic strips to buckle the rail on the upper Iron plate.

Compared with prior art, positive effect of the present invention is:

The invention provides a vibration-damping fastener with low vertical stiffness and high lateral stiffness. The fastener can effectively reduce rail vibration and noise through the double-layer damping effect of the under-rail backing plate and the middle vibration-damping backing plate; The upper iron backing plate, the middle damping backing plate and the lower iron backing plate are connected together with the connecting sleeve, which is convenient for the installation and maintenance of the fasteners. The iron backing plates can only move vertically, which ensures the lateral stability of the fastener system. The specific advantages are as follows:

(1) The fastening system can achieve low vertical stiffness and good vibration damping effect through the under-rail backing plate and the middle damping backing plate; the lower iron backing plate of the fastening system is fixed on the sleeper through anchor bolts, and the upper iron Between the backing plate and the lower iron backing plate, the horizontal limit is realized through the connecting sleeve and the limit block, and the fastener system has sufficient lateral rigidity.

(2) The upper iron backing plate, the middle damping backing plate, and the lower iron backing plate are assembled into one through the connecting sleeve and the limit block to form a shock absorber, which reduces the number of parts on the construction site and facilitates the on-site installation of the fastener system.

(3) The under-rail backing plate, insulating gauge block, elastic strip and other parts used in the fastener system are all consistent with the ordinary fasteners of the line, which has strong versatility and is conducive to on-site installation and maintenance.

Description of drawings

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

Fig. 1 is a partial sectional view of the overall structure of the present invention;

Fig. 2 is a top view of the overall structure of the present invention;

Figure 3 is a partial sectional view of the shock absorber assembly;

Fig. 4 is a schematic diagram of the shock absorber assembly;

Figure 5 is a schematic diagram of the lower iron backing plate;

Fig. 6 is a schematic diagram of an upper iron backing plate;

Fig. 7 is a schematic diagram of the middle damping backing plate;

Figure 8 is a schematic diagram of the connecting sleeve;

Fig. 9 is a schematic diagram of a limit block;

Fig. 10 is a schematic diagram of the adjustable distance buckle;

The main reference signs in the figure include: rail 1, elastic bar 2, insulating gauge block 3, under-rail backing plate 4, upper iron backing plate 5, limit block 6, middle vibration-damping backing plate 7, lower iron backing plate 8 , Insulation cushion plate 9, anchor bolt 10, spring washer 11, distance adjustment buckle plate 12, connecting sleeve 13, embedded casing 14, sleeper 15.

Detailed ways

As shown in Fig. 1 and Fig. 2, the transverse limit type damping fastener of the present invention comprises a sleeper 15 and a pre-embedded bushing 14 arranged in the sleeper, and the anchor bolt 10 passes through the spring washer 11, the distance-adjusting buckle plate 12, The lower iron backing plate 8 and the insulating buffer backing plate 9 are connected with the embedded casing 14 . The lower iron backing plate 8 is provided with the middle damping backing plate 7 and the upper iron backing plate 5 in sequence, and the lower iron backing plate 8, the middle damping backing plate 7, the upper iron backing plate 5 and the limit block 6 are connected through the connecting sleeve 13 As a whole, forming a shock absorber. Under the rail 1, an under-rail backing plate 4 is laid, and insulating gauge blocks 3 are installed on both sides, and the rail is buckled on the upper iron backing plate 5 by elastic strips 2.

As shown in Figure 5, a limit post 801 is set on the lower iron backing plate 8, and the limit post includes a lower boss 8011, a middle boss 8012, and an upper boss 8013, and the bosses are cylinders, and the upper boss is provided with a flat Straight side 8016, the upper surface of the upper boss is provided with a tooth profile 8015 and a limiting groove 8014. Both sides of the lower iron backing plate are also provided with retaining shoulders 802 , and the top surface of the retaining shoulders is provided with an inwardly extending stopper 8021 , and a bayonet 8022 is formed between the two stoppers 8021 .

As shown in FIG. 6 , the upper iron backing plate 5 is provided with a through hole 501 , and a circular boss 502 is arranged around the through hole, and the upper iron backing plate 5 is provided with an elastic bar mounting seat 503 .

As shown in Figure 7, the middle damping backing plate 7 is provided with a stepped hole, and the inner wall 701 of the small hole can just pass through the lower iron backing plate limit post 801, and cooperates with the outer wall of the lower boss 8011, and the inner wall 702 of the large hole is matched with the outer wall of the lower boss 8011. The outer wall 1301 of the connection sleeve is matched.

As shown in Figure 8, the connecting sleeve 13 is a hollow cylinder, and its inner hole 1302 is provided with two symmetrical locking posts 1303. The straight edge 8016 of the platform, the outer circular wall 1301 of the connecting sleeve can just pass through the through hole 501 of the upper iron backing plate. The upper surface of the connecting sleeve is provided with a flange 1305 and a limiting groove 1304 .

As shown in Figure 9, the top surface of the limit block 6 is provided with a boss 601, and the boss 601 snaps into the bayonet 8022 of the shoulder of the lower iron backing plate, and is connected with the two stoppers 8021 on the top surface of the shoulder of the lower iron backing plate. Cooperate to prevent the limit block from moving along the direction of the rail. When the shock absorber is installed, the inclined side 602 of the limit block fits with the inner side 8023 of the shoulder of the lower iron backing plate, and the other side 603 fits with the spring provided on the upper iron backing plate 5. The sides 5031 of the strip mount 503 fit snugly.

The lower iron backing plate 8, the middle damping backing plate 7, the upper iron backing plate 5, the connecting sleeve 13 and the limit block 6 can be combined into one body to form a shock absorber assembly, as shown in Fig. 3 and Fig. 4 . The installation method is: place the limit block 6 on the shoulder 802 of the lower iron backing plate 8, make the inclined side 602 of the limit block fit with the inner surface 8023 of the shoulder of the lower iron backing plate, and the boss 601 of the limit block Just stuck in the middle of the stopper 8021 on the top surface of the lower iron backing plate retaining shoulder. Place the middle damping backing plate 7 on the lower iron backing plate 8, the small hole inner wall 701 of the middle damping backing plate 7 can just pass through the lower iron backing plate limit post 801, which can prevent the middle damping backing plate 7 from being horizontally Direction shifting. The upper iron backing plate 5 is placed on the middle damping backing plate 7, the through hole 501 of the upper iron backing plate passes through the limit post 801 of the lower iron backing plate, and the side 5031 of the elastic bar mounting seat of the upper iron backing plate is connected to the limiter. The bit block side 603 fits. Align the inner hole wall lock post platform 1303 on the connection sleeve 13 with the straight edge 8016 of the upper boss on the limit post of the lower iron backing plate, then pass the connection cover 13 through the stop post 801, so that the bottom surface of the flange platform 1305 of the connection sleeve is aligned with the Upper iron backing plate 5 top surface contacts. Give the upper iron backing plate 5 a vertically downward force to make the middle damping backing plate 7 in a compressed state, and then unload the force loaded on the upper iron backing plate 5 after the connecting sleeve 13 is rotated 90°. At this time, the upper surface of the lock column platform 1303 of the connection sleeve contacts the lower surface of the upper boss 8013 of the lower iron backing plate limit post, the bottom surface of the connection sleeve flange platform 1305 contacts the top surface of the upper iron backing plate circular boss 502, and the connection sleeve The inner hole wall 1302 is attached to the outer wall of the limit column 801, and the outer circular wall 1301 of the connecting sleeve is attached to the inner wall of the through hole 501 of the upper iron backing plate. In this way, the upper iron backing plate 5, the middle damping backing plate 7, the lower iron backing plate 8, and the spacer 6 are connected as one by the connection sleeve 13, and the spacer 6 and the connection sleeve 13 can prevent the upper iron backing plate 5 from connecting with the lower iron backing plate. The iron backing plate 8 moves in the horizontal direction, which enhances the lateral stiffness of the shock absorber.

As shown in Figure 10, the distance-adjusting buckle plate 12 is provided with a round hole 1201, and the periphery of the round hole is provided with a tooth profile 1202. The tooth profile 1202 on the distance-adjusting pinch plate can mesh with the tooth profile 8015 on the lower iron backing plate limit post, and The oblong hole of the iron backing plate limit post 801 can be used for the adjustment of the rail gauge, and setting the tooth shape can improve the lateral load resistance capacity of the fastener system. The distance-adjusting buckle is provided with a limit boss 1203, and when the fastener is installed, the limit boss cooperates with the limit groove 1304 of the connecting sleeve and the limit groove 8014 on the limit post of the lower iron backing plate, which can effectively prevent the connection sleeve from rotating and ensure less The vibrator does not loosen.

Fastener system installation method: Lay the insulating cushion plate 9 on the sleeper 15, lay the shock absorber assembly on the insulating cushion plate 9, and align the center of the long hole of the lower iron plate 8 with the pre-embedded hole in the sleeper. Sleeve 14; the distance-adjusting buckle 12 is placed on the shock absorber assembly, the tooth shape of the distance-adjusting buckle is engaged with the tooth shape on the limit column, and the spacing boss 1203 of the distance-adjusting buckle is placed on the In the limit groove 1304 of the connecting sleeve 13 and the limit groove 8014 of the limit post 801; put the anchor bolt 10 on the spring washer 11 through the hole of the distance adjustment fastener and the shock absorber assembly, and screw it into the pre-embedded part of the sleeper. inside the casing. Then lay the under-rail backing plate 4 on the shock absorber assembly, lay the steel rail 1 on the under-rail backing plate 4, and install insulating gauge blocks 3 on both sides of the rail; finally, use elastic strips to fix the rail on the shock absorber assembly .

Claims (10)

1. A transverse spacing type vibration damping fastener system, characterized in that: including sleeper and the pre-buried sleeve pipe that sets up in the sleeper, lay insulating buffer backing plate on the sleeper, lay the shock absorber subassembly that is connected as an organic wholely by last indisputable backing plate, middle damping backing plate, lower indisputable backing plate and stopper through the adapter sleeve on insulating buffer backing plate, lay the roll adjustment fastener on the shock absorber subassembly, anchor bolt passes spring washer, roll adjustment buckle, shock absorber subassembly and insulating buffer backing plate are connected with pre-buried sleeve pipe, lay the rail lower bolster on last indisputable backing plate, lay the rail on rail lower bolster, install insulating gauge piece in rail both sides, withhold the rail on last indisputable backing plate through the bullet strip.

2. A transverse spacing vibration damping fastener system according to claim 1, wherein: the lower iron base plate is provided with a limit column and a stop shoulder, the upper iron base plate is provided with an elastic strip installation seat, the inclined side surface of the limit block is attached to the inner side surface of the stop shoulder, and the other side surface of the limit block is attached to the outer side surface of the elastic strip installation seat.

3. A transverse spacing vibration damping fastener system according to claim 2, wherein: the stop block is provided with a stop block extending inwards, the top surface of the stop block is provided with a boss, and the boss is clamped into a bayonet formed between the two stop blocks.

4. A transverse spacing vibration damping fastener system according to claim 2, wherein: the limit column comprises a lower boss, a middle boss and an upper boss.

5. A transverse spacing vibration damping fastener system according to claim 4, wherein: the middle vibration reduction backing plate is provided with a step hole, the inner wall of the small hole is matched with the outer wall of the lower boss, and the inner wall of the large hole is matched with the outer wall of the connecting sleeve.

6. A transverse spacing vibration damping fastener system according to claim 4, wherein: the upper boss is provided with a flat edge, the connecting sleeve is a hollow cylinder, the inner hole of the connecting sleeve is provided with two symmetrical lock column platforms, the distance between the two lock column platforms just can pass through the flat edge of the boss on the lower iron base plate limiting column, and the outer circular wall of the connecting sleeve just can pass through the through hole of the upper iron base plate.

7. A transverse spacing vibration damping fastener system according to claim 4, wherein: the distance adjusting buckle plate is provided with a limiting boss, and limiting grooves matched with the limiting boss are formed in the upper surface of the upper boss of the lower iron base plate limiting column and the upper surface of the connecting sleeve.

8. A transverse spacing vibration damping fastener system according to claim 4, wherein: the distance adjusting buckle plate is provided with a round hole, and the periphery of the round hole is provided with a tooth shape for being meshed with the tooth shape on the lower iron backing plate limit post.

9. A transverse spacing vibration damping fastener system according to claim 2, wherein: and a slotted hole is arranged in the lower iron backing plate limit column.

10. The method for installing the transverse limiting type vibration reduction fastener system is characterized by comprising the following steps of: the method comprises the following steps:

step one, assembling a damper assembly:

(1) Placing a limiting block at the shoulder of the lower iron base plate, enabling the inclined side surface of the limiting block to be attached to the inner side surface of the shoulder of the lower iron base plate, and enabling the boss of the limiting block to be clamped between two stop blocks on the top surface of the shoulder of the lower iron base plate;

(2) Placing the middle vibration reduction base plate on the lower iron base plate, so that the inner wall of a small hole of the middle vibration reduction base plate just penetrates through a limit column of the lower iron base plate;

(3) Placing the upper iron base plate on the middle vibration reduction base plate, enabling the through holes of the upper iron base plate to penetrate through the limit posts of the lower iron base plate, and enabling the side surfaces of the elastic strip installation seats of the upper iron base plate to be attached to the side surfaces of the limit blocks;

(4) Aligning the inner hole wall lock post platform of the connecting sleeve with the flat edge of the boss on the lower iron base plate limit post, and then enabling the connecting sleeve to pass through the limit post so that the bottom surface of the flange platform of the connecting sleeve is contacted with the top surface of the upper iron base plate; a vertical downward force is applied to the upper iron base plate to enable the middle vibration reduction base plate to be in a compressed state, then the connecting sleeve is rotated for 90 degrees, and then the force applied to the upper iron base plate is unloaded, at the moment, the upper surface of a lock post table of the connecting sleeve is contacted with the lower surface of an upper boss of a limit post of the lower iron base plate, the bottom surface of a flange table of the connecting sleeve is contacted with the top surface of a round boss of the upper iron base plate, the inner hole wall of the connecting sleeve is attached to the outer wall of the limit post, and the outer circular wall of the connecting sleeve is attached to the inner wall of a through hole of the upper iron base plate;

step two, paving an insulating buffer backing plate on the sleeper, paving the shock absorber assembly assembled in the step one on the insulating buffer backing plate, and enabling the center of a long round hole of a lower iron backing plate to be aligned with an embedded sleeve in the sleeper;

step three, placing the distance adjusting fastener on the shock absorber component, enabling the tooth shape of the distance adjusting buckle plate to be meshed with the tooth shape on the limit column, and enabling the limit boss of the distance adjusting buckle plate to be placed in the limit groove arranged on the connecting sleeve and the limit column;

step four, putting the anchor bolt on a spring washer, and screwing the anchor bolt into an embedded sleeve of the sleeper through the distance-adjusting fastener, the damper assembly and the insulating buffer backing plate;

and fifthly, paving the rail lower backing plate on an upper iron backing plate of the shock absorber assembly, paving the steel rail on the rail lower backing plate, installing insulating track gauge blocks on two sides of the steel rail, and finally buckling the steel rail on the upper iron backing plate by using elastic strips.

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