CN216474278U - Fastener for tramcar - Google Patents

Abstract

The utility model discloses a fastener for a tramcar, which comprises an embedded sleeve, a base plate, a bolt, an elastic strip, a gauge block and a rail height-adjusting backing plate, wherein the bolt penetrates through the base plate to be connected with the embedded sleeve so that the elastic strip deforms and compresses the base plate and the gauge block; the bearing groove part on the substrate is provided with an inserting groove, the elastic strip cushion block is provided with an inserting rib which can be inserted into the inserting groove, and the inserting rib is inserted into the inserting groove to connect the elastic strip cushion block with the substrate; the fastener of this structure can effectively solve the problem that can't compress tightly because of too high bullet strip of steel rail.

Description

Fastener for tramcar

Technical Field

The utility model belongs to the technical field of rail transit fasteners, and particularly relates to a tramcar rail fastener structure.

Background

With the rapid development of urban rail transit, modern tramcars occupy various large and medium-sized cities rapidly with the advantages of economy, comfort, energy conservation, environmental protection, beauty and the like, and become an indispensable member in the field of rail transit. After more and more circuit operation was opened, people constantly improved to the demand in aspects such as riding comfort and safety and stability, consequently, the structure and the performance of current fastener also need promote to some extent, especially become the problem that tram fastener system urgently needed the solution to the requirements such as the insulation, damping, bear, corrosion resistance, locking of system.

At present, most fasteners adopt a base plate made of a non-metal material, although the defects of rusting, corrosion and the like after the metal base plate is buried underground are overcome, the effect of bearing the transverse load of a wheel rail is poor, the base plate cannot transfer the load to a rail foundation and a sleeper better, and a bolt is enabled to bear a large bending moment and finally break.

Meanwhile, most fasteners have no anti-loosening structure or are unreasonable in anti-loosening structure, bolts gradually loosen along with vibration of wheel rails, elastic strips are buckled and become invalid, the tramcar fasteners are integrally buried underground, re-screwing of the bolts can be almost realized, and great potential safety hazards exist in the running process of trains.

In addition, after rainwater or mud in the embedded sleeve enters, the bolt rusts, and water freezes in a severe cold area to cause the sleeve to burst.

In addition, the elastic element that most fasteners adopted generally is the elastic backing plate of frustum formula or slot type, and sewage and debris enter into the inside of elastic backing plate easily, finally lead to the elastic backing plate to become the entity structure, have lost elasticity, make fastener rigidity increase to can't play the damping effect, take the travelling comfort variation.

Meanwhile, the height adjustment amount of the steel rail is limited, the front toe of the elastic strip continuously faces upwards in the height adjustment process, the position of the rear toe is unchanged, at the moment, the overall buckling pressure of the fastener is affected, the steel rail is prone to overturning, and potential safety hazards exist in the system.

SUMMERY OF THE UTILITY MODEL

The present invention is directed to a new type of fastener to solve the above problems and to improve the stability, safety and riding comfort of the fastener. The technical scheme adopted by the utility model is as follows:

the utility model provides a fastener for tram, is including buried sleeve, base plate, bolt, bullet strip, gauge block and rail height-adjusting backing plate down, the bolt pass the base plate and be connected with buried sleeve and make bullet strip warp and compress tightly base plate and gauge block, rail height-adjusting backing plate arrange in between rail and the base plate on be equipped with the bearing groove of installation bullet strip the base plate on be equipped with and arrange in the bearing groove position and can change or the bullet strip cushion of demolising the base plate on the bearing groove position be equipped with the inserting groove bullet strip cushion is last to be equipped with the grafting muscle that can insert the inserting groove, the grafting muscle insert the inserting groove in make bullet strip cushion and base plate connection.

Furthermore, the shape of the elastic strip bearing part of the elastic strip cushion block is the same as that of the elastic strip bearing part of the bearing groove on the substrate.

Further, still include elastic backing plate, sealing washer and lock washer, lock washer joint prevent on the bolt that the bolt is not hard up, the sealing washer cover establish the bolt and arrange the base plate bottom in and prevent that debris from getting into the buried sleeve in advance, elastic backing plate arrange in and realize the damping energy-absorbing between rail and the base plate.

Furthermore, the elastic backing plate comprises an elastic plate, and a group of regularly arranged damping particles are embedded in the elastic plate.

Furthermore, the anti-loose washer comprises a check ring which is provided with a polygonal hole and can be clamped on the hexagonal head of the bolt, and the periphery of the check ring is provided with a limiting hook for limiting the rotation of the check ring.

Furthermore, a base plate lower-lifting base plate is arranged between the base plate and the sleeper.

Furthermore, inclined planes are arranged at the contact parts of the two ends of the base plate and the sleeper blocking shoulders.

The utility model has the beneficial effects that:

the height-adjusting auxiliary base plate is adopted, so that the height adjustment amount of the system is increased, and the consistency and the smoothness of the height of the steel rail can be ensured in the later operation process.

The base plate with the two inclined surfaces at the two ends is adopted, the service life under the naked condition can be ensured, meanwhile, the transverse load is better transmitted to the rail foundation, and the train runs more safely.

The anti-loosening gasket is adopted, so that the buckling pressure of the fastener is not lost, and the problem that the fastener cannot be re-screwed for maintenance after being embedded in the later period is avoided.

The sealing ring is adopted, so that the condition that sewage cannot enter the embedded sleeve is ensured, the bolt is prevented from being corroded, and the conditions that the sleeve is frozen and swelled after water enters the sleeve in a severe cold area can be avoided.

The elastic base plate with the damping particles embedded inside can provide better elasticity and vibration damping performance. Meanwhile, different from most of grooves or frustum base plates at present, the base plate is of a flat plate-shaped structure integrally, sundries cannot enter the base plate, and the elasticity of the fastener system cannot be affected in the using process.

Drawings

FIG. 1 is a schematic structural view of the present invention;

FIG. 2 is a schematic view of a substrate structure according to the present invention;

FIG. 3 is a schematic view of the structure of the spring strip spacer of the present invention;

FIG. 4 is a schematic view of a lock washer according to the present invention;

FIG. 5 is a schematic view of the structure of the elastic pad of the present invention.

Detailed Description

The fastener shown in the figure 1 comprises an embedded sleeve 1, a base plate 2, a bolt 3, elastic strips 4, a gauge block 5 and a rail lower height-adjusting base plate 6, wherein the embedded sleeve 1 is embedded in a sleeper, the base plate 2 is placed on the sleeper to support a steel rail, the gauge block 5 is pressed and buckled on two sides of the rail bottom of the steel rail, the bolt 3 penetrates through the base plate 2 to be connected with the embedded sleeve 1 to tightly press the elastic strips 4 arranged on the base plate 2, and the elastic strips 4 tightly press the gauge block 5 and the base plate 2.

The rail height-adjusting backing plate 6 is arranged between the steel rail and the base plate 2 and used for adjusting the height of the steel rail, the height of the steel rail is adjusted after the rail height-adjusting backing plate 6 is arranged, the front toe (one end of the compressed gauge block) of the elastic strip 4 is continuously upward, the position of the rear toe is unchanged, at the moment, the integral buckling pressure of the fastener is influenced, the steel rail is easy to overturn, and the system has potential safety hazards, so that in order to ensure the balance of the buckling pressure of the elastic strip, an elastic strip cushion block 7 is arranged at the position where the elastic strip 4 is arranged on the base plate 2, a bearing groove 2-1 is arranged on the base plate 2, when the rail height-adjusting backing plate 6 is not arranged, the front toe of the elastic strip 4 cannot be too high, the elastic strip 4 does not need to be adjusted to be high to reach balance, the elastic strip 4 is directly placed in the bearing groove 2-1 to compress the steel rail, and when the rail height-adjusting backing plate 6 is arranged below the steel rail as shown in figure 1, the installation position of the elastic strip 4 also needs to be adjusted at the same time in order to balance, therefore, the elastic strip cushion block 7 is arranged on the base plate 2, the elastic strip cushion block 7 is arranged at the position of the bearing groove 2-1 on the base plate 2, and the elastic strip 4 is placed on the elastic strip cushion block 7 to be heightened so as to be matched with the steel rail to be heightened. As shown in fig. 3, the shape of the part of the elastic strip cushion block 7 bearing the elastic strip 4 is the same as the shape of the part of the substrate 2 bearing the elastic strip 4, and the substrate 2 provided with the elastic strip cushion block 7 is equivalent to increase the height of the bearing groove 2-1, so that the mounting height of the elastic strip 4 is adjusted to ensure that the buckling angle of the elastic strip 4 is unchanged, and the situation that the buckling pressure is influenced because the front toe of the elastic strip is lifted after the steel rail is lifted by the rail lower heightening cushion plate 6 is avoided.

As shown in fig. 2 and 3, in order to facilitate installation of the spring strip cushion block 7, the insertion groove 2-2 is formed in the substrate 2, the insertion rib 7-1 is formed in the spring strip cushion block 7, and the insertion rib 7-1 is inserted into the insertion groove 2-2 to position and fix the spring strip cushion block 7 when the spring strip cushion block 7 is installed.

In avoiding impurity to get into buried sleeve 1 as shown in figure 1, still the cover is equipped with sealing washer 9 on bolt 3, and sealing washer 9 is arranged in and is filled up the space between base plate 2 and the bolt 3 under base plate 2, plays sealed effect, prevents that sewage from the sleeper face from getting into buried sleeve 1 inside, prevents the bolt corrosion, has more stopped the phenomenon emergence of the casing frost heaving under winter or severe cold weather.

As shown in figure 4, the anti-loose washer 10 is clamped on the bolt 3 to prevent the bolt from loosening, and comprises a retainer ring 10-1 which is provided with a polygonal hole and can be clamped on the hexagon head of the bolt 3, and a limiting hook 10-2 for limiting the rotation of the retainer ring 10-1 is arranged on the periphery of the retainer ring 10-1.

In order to achieve better vibration damping effect on the steel rail, an elastic base plate 8 is arranged below the steel rail, as shown in fig. 5, the elastic base plate 8 comprises an elastic plate 8-1, and a group of regularly arranged damping particles 8-2 are embedded in the elastic plate 8-1. When a train load is applied, the elastic backing plate 8 is compressed integrally to generate elastic deformation, and meanwhile, the damping particles 8-2 absorb vibration energy to provide elasticity and vibration damping performance for the fastener. When the load is relieved or disappears, the damping particles 8-2 can be rapidly restored to their original state by their elasticity.

As shown in figure 2, in order that when a train passes through, the base plate 2 can completely transmit the received transverse load to the sleepers and the track foundations on the outer side of the base plate through the inclined planes on the two sides, so that the stability of a fastener system is ensured when the stress is applied, and the service life of the fastener is prolonged, the inclined planes 2-3 arranged on the two sides of the base plate 2 are matched with the sleeper retaining shoulders.

If necessary, a base plate lower elevation base plate can be arranged below the base plate 2 to adjust the height of the whole fastener.

Claims (7)

1. The utility model provides a fastener for tram, is including buried sleeve (1), base plate (2), bolt (3), bullet strip (4), gauge block (5) and rail height-adjusting backing plate (6) down, bolt (3) pass base plate (2) and buried sleeve (1) and be connected messenger bullet strip (4) deformation and compress tightly base plate (2) and gauge block (5), rail height-adjusting backing plate (6) down arrange in between rail and base plate (2) and adjust rail height, its characterized in that: the elastic strip bearing device is characterized in that a bearing groove (2-1) for mounting an elastic strip (4) is formed in the substrate (2), an elastic strip cushion block (7) which is arranged in the bearing groove (2-1) and can be replaced or detached is arranged on the substrate (2), an insertion groove (2-2) is formed in the position of the bearing groove (2-1) on the substrate (2), an insertion rib (7-1) which can be inserted into the insertion groove (2-2) is arranged on the elastic strip cushion block (7), and the insertion rib (7-1) is inserted into the insertion groove (2-2) to enable the elastic strip cushion block (7) to be connected with the substrate (2).

2. The railcar fastener of claim 1, wherein: the shape of the part of the elastic strip cushion block (7) for bearing the elastic strip (4) is the same as that of the part of the base plate (2) for bearing the elastic strip (4).

3. The railcar fastener of claim 1, wherein: still include elastic backing plate (8), sealing washer (9) and lock washer (10), lock washer (10) joint prevent on bolt (3) that the bolt is not hard up, sealing washer (9) cover establish bolt (3) arrange base plate (2) bottom in and prevent debris from getting into buried sleeve (1), elastic backing plate (8) arrange in and realize the damping energy-absorbing between rail and base plate (2).

4. A railcar fastener according to claim 3, wherein: the elastic cushion plate (8) comprises an elastic plate (8-1), and a group of regularly arranged damping particles (8-2) are embedded in the elastic plate (8-1).

5. A railcar fastener according to claim 3, wherein: the anti-loose washer (10) comprises a retainer ring (10-1) which is provided with a polygonal hole and can be clamped on a hexagon head of the bolt (3), and a limiting hook (10-2) for limiting the rotation of the retainer ring (10-1) is arranged on the periphery of the retainer ring (10-1).

6. A railcar coupler according to claim 1, wherein: and a base plate lower-lifting base plate is arranged between the base plate (2) and the sleeper.

7. The railcar fastener of claim 1, wherein: inclined planes (2-3) are arranged at the contact parts of the two ends of the base plate (2) and the sleeper shoulder.

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