CN212316560U

CN212316560U - Direct-buried fastener

Info

Publication number: CN212316560U
Application number: CN202020901534.2U
Authority: CN
Inventors: 吴俊�; 段桂平; 柯赟; 董国宪; 王欣怡; 秦邦
Original assignee: China Railway Shanghai Design Institute Group Co Ltd
Current assignee: China Railway Shanghai Design Institute Group Co Ltd
Priority date: 2020-05-26
Filing date: 2020-05-26
Publication date: 2021-01-08
Anticipated expiration: 2030-05-26

Abstract

The utility model belongs to the technical field of the technique of track construction and specifically relates to a direct-burried fastener, including backing plate and pillar, the backing plate includes plate body and lower plate body, and the size of lower plate body is less than the size of plate body, and upper plate body, lower plate body and pillar are connected as an organic whole, and upper plate body bottom is connected with lower plate body, and lower plate body bottom is connected with the pillar that two counterpointing set up. The utility model discloses a size of the lower plate body is less than the size of upper plate body, can be through injecting rapid-curing cutback cement or gluing agent in the lower plate body mounting groove toward the railway roadbed, can install two pillars respectively in two pillar mounting holes of railway roadbed, the lower plate body is installed in the lower plate body mounting groove of railway roadbed, the upper plate body bottom surface and the contact of railway roadbed top surface this moment, lower plate body and pillar have played the effect of location, can make the upper plate body place the assigned position at the railway roadbed, the installation error of upper plate body has been reduced, and then the installation error of the rail on upper plate body upper portion has been reduced, the installation accuracy of rail has been increased promptly.

Description

Direct-buried fastener

Technical Field

The utility model belongs to the technical field of the technique of track construction and specifically relates to a direct-burried fastener.

Background

The existing direct-buried fastener mainly has the following problems: 1. the nylon sleeve is easy to be inclined in the casting process due to the in-situ casting of the structure under the rail; 2. the fastener body is easy to pour in a structure under the rail by adopting a rail erecting method for construction, so that subsequent maintenance is influenced; 3. the small radius curve section pit is insufficient in transverse force capability, and the nylon sleeve is easily broken under the action of large transverse force, so that the fastener system is failed.

Disclosure of Invention

The utility model aims at providing a direct-burried fastener according to above-mentioned prior art is not enough, with nylon sleeve pipe and backing plate integrated into one piece, has improved its wholeness, makes the nylon sleeve pipe accurate location easier, has also increased nylon sleeve pipe intensity and withdrawal resistance simultaneously.

The utility model discloses the purpose is realized accomplishing by following technical scheme:

the utility model provides a direct-burried fastener installs on orbital way bed, its characterized in that: the novel bearing plate comprises a base plate and a supporting column, wherein the base plate comprises an upper plate body and a lower plate body, the size of the lower plate body is smaller than that of the upper plate body, the upper plate body is integrally connected with the lower plate body and the supporting column, the lower plate body is connected with the lower plate body, and the supporting column is connected to the bottom of the lower plate body in a two-alignment mode.

The utility model discloses a support, including support, upper plate body, lower plate body, upper plate body and lower plate body, the support outside is equipped with the external screw thread, two internal thread holes have been seted up at upper plate body top, the internal thread hole warp the upper plate body with the lower plate body extends to inside the support.

The bottom of the lower plate body is provided with a plurality of bosses which are uniformly arranged along the transverse and longitudinal directions of the lower plate body, a plurality of grooves which are staggered transversely and longitudinally are formed among the bosses, and two symmetrically arranged discharge ports are arranged in the middle of the edge of the joint of the upper plate body and the lower plate body.

The two pillars are respectively installed in two pillar mounting holes of the ballast bed, the depth and the diameter of each pillar mounting hole are both satisfied with the installation requirements of the pillar, the lower plate body is installed in the lower plate body mounting groove of the ballast bed, and the length, the width and the height of the lower plate body mounting groove are all satisfied with the installation requirements of the lower plate body.

A construction method related to the direct-buried fastener is characterized by comprising the following steps: the construction method comprises the following steps:

a. cutting a plate body installation groove at the installation position of the direct-buried fastener;

b. after the lower plate body mounting groove is dug, drilling a support column mounting hole in the lower plate body mounting groove;

c. after the drilling of the support mounting hole is finished, pouring quick-drying cement or adhesive into the lower plate mounting groove, wherein the quick-drying cement or adhesive can enter the support mounting hole along the lower plate mounting groove;

d. and pressing the direct-buried fastener into the lower plate body mounting groove to enable the support to be mounted in the support mounting hole, and mounting the lower plate body in the lower plate body mounting groove until the bottom surface of the upper plate body of the direct-buried fastener is in contact combination with the top surface of the ballast bed.

The utility model has the advantages that:

1. because the size of the lower plate body is smaller than that of the upper plate body, quick-drying cement or adhesive can be injected into the mounting groove of the lower plate body of the track bed, two support columns can be respectively mounted in the mounting holes of the two support columns of the track bed, the lower plate body is mounted in the mounting groove of the lower plate body of the track bed, the bottom surface of the upper plate body is contacted with the top surface of the track bed at the moment, the lower plate body and the support columns play a role in positioning, the upper plate body can be placed at a specified position of the track bed, the mounting error of the upper plate body is reduced, the mounting error of a steel rail on the upper part of the upper plate body is further reduced, the mounting precision of the steel rail is increased;

2. the upper plate body, the lower plate body and the support column are integrally connected, so that the matching of a pre-buried sleeve and a sleeper is omitted, the integrity of the fastener is improved, the installation error among the upper plate body, the lower plate body and the sleeper is reduced, the installation accuracy of the upper plate body is improved, the support column and the lower plate body are positioned more easily and accurately, and the strength and the anti-pulling force of the support column and the lower plate body are increased;

3. the lug boss and the groove formed by the lug boss can effectively increase the contact area between the direct-buried fastener and quick-dry cement or adhesive, can enhance the connection between the fastener and the under-rail structure, and improve the horizontal transverse shearing force and the integral tensile strength of the direct-buried fastener;

4. the upper plate body of the fastener is larger than the periphery of a chiseling space (lower plate body mounting groove), the upper plate body can be flatly placed on the top surface of the ballast bed, and the situations of uneven fastener construction, nonuniform height of the fastener protruding out of the top surface of the ballast bed and error on the front and back surfaces in the fastener mounting process can be effectively avoided during field mounting construction;

5. the external thread is arranged outside the strut, the external thread of the strut can effectively increase the contact area between the fastener and the quick-dry cement or adhesive, the connection between the fastener and the under-rail structure can be enhanced, and the strength and the pull-out resistance of the strut are increased;

6. the design of the discharge port can avoid burying the fastener during the pouring construction of the structure under the rail;

7. the fastener is made of glass fiber reinforced polyamide 66 material, and the material is widely applied to embedded sleeves and has the advantages of long service life, high strength and the like.

Drawings

Fig. 1 is a schematic view of the installation structure of the present invention;

fig. 2 is a top view of the present invention;

fig. 3 is a bottom view of the present invention;

fig. 4 is a schematic view of the installation of a conventional direct-burried fastener.

Detailed Description

The features of the present invention and other related features are described in further detail below by way of example in conjunction with the accompanying drawings to facilitate understanding by those skilled in the art:

as shown in fig. 1-4, the symbols 1-21 in the figures are respectively represented as: the track plate comprises an upper plate body 1, a lower plate body 2, a support column 3, an internal threaded hole 4, a groove 5, a discharge port 6, a track bed 7, a T-shaped bolt 8, a nut 9, a flat washer 10, an elastic strip 11, a track lower backing plate 12, an iron backing plate 13, an iron backing plate lower backing plate 14, a track gauge block 15, a bolt 19, a backing plate 20 and a boss 21.

Example (b): as shown in fig. 4, the direct-burried fastener in the prior art is composed of a T-bolt 8, a nut 9, a flat washer 10, a spring bar 11, a rail lower plate 12, an iron plate 13, an iron plate lower plate 14, a gauge block 15, an anchor bolt 16, a spring washer 17, and a nylon sleeve 18. The fastener system composed of the T-shaped bolt 8, the nut 9, the flat washer 10, the elastic strip 11, the anchor bolt 16, the spring washer 17 and the nylon sleeve 18 is mainly used for fastening and fixing the steel rail, the rail lower cushion plate 12 is used for supporting the steel rail, the iron cushion plate 13 and the iron cushion plate lower cushion plate 14 are used for supporting and correspondingly adjusting the height of the steel rail and the fastener system, and the rail gauge block 15 is used for adjusting the position of the steel rail, so that the rail gauge between the two steel rails meets the design requirement.

As shown in fig. 1, the direct-buried fastener in this embodiment is installed on the track bed of the track. As shown in fig. 1-3, the fastener mainly comprises a backing plate and a pillar 3, wherein the backing plate comprises an upper plate body 1 and a lower plate body 2, the bottom of the upper plate body 1 is connected with the lower plate body 2, and the bottom of the lower plate body 2 is connected with two pairs of pillars 3 arranged in an aligned manner. As shown in fig. 3, the outer contour dimension of the lower plate 2 is smaller than that of the upper plate 1, and when the tie plate is installed, the two struts 3 can be respectively installed in the two strut installation holes of the ballast bed 7 by injecting quick-drying cement or adhesive into the lower strut installation groove of the ballast bed 7, and the lower plate 2 is installed in the lower strut installation groove of the ballast bed 7, so that the bottom surface of the upper plate 1 can be supported on the surface of the ballast bed 7, and the lower plate 2 and the struts 3 play a role in positioning during mounting of the tie plate, so that the upper plate 1 can be placed at a designated position of the ballast bed 7, the installation error of the upper plate 1 is reduced, the installation error of the steel rail on the upper portion of the upper plate 1 is further reduced, and the installation accuracy of the steel rail is increased. In addition, because the last plate body 1 of this fastener is bigger than chisel out space (lower plate body mounting groove) all around, goes up plate body 1 and can place on 7 top surfaces of railway roadbed smoothly, can effectively avoid fastener construction unevenness, the height that the fastener protrudes 7 top surfaces of railway roadbed to be nonuniform and the condition that the positive and negative face made mistakes in the fastener installation process takes place during on-the-spot installation construction.

As shown in fig. 2 and 3, the upper plate body 1, the lower plate body 2 and the pillar 3 three are integrated, the cooperation of the embedded sleeve and the sleeper is omitted, the integrity of the fastener is improved, the structural strength is ensured, the installation error among the three is reduced, the installation precision of the upper plate body 1 is further improved, the pillar 3 and the lower plate body 2 are positioned accurately and easily, and the strength and the pull-out resistance of the pillar 3 and the lower plate body 2 are also increased.

As shown in fig. 3, a plurality of bosses 21 are uniformly arranged on the bottom of the lower plate body 2 along the transverse and longitudinal directions thereof, a plurality of grooves 5 staggered transversely and longitudinally are formed between the bosses 21, and two discharge ports 6 are symmetrically arranged in the middle of the edge of the joint of the upper plate body 1 and the lower plate body 2. The boss 21 and the groove 5 formed by the boss can effectively increase the contact area between the direct-buried fastener and the quick-drying cement or adhesive, can enhance the connection between the fastener and the rail lower structure, and improve the horizontal transverse shearing force and the overall tensile strength of the direct-buried fastener. In addition, surplus quick-drying cement or adhesive in the lower plate body mounting groove can be discharged from the discharge port 6, so that the fastener can be prevented from being buried when the structure under the rail is cast, and the uniformity between the quick-drying cement or adhesive arranged at the bottom of the lower plate body 2 and the quick-drying cement or adhesive is ensured.

As shown in fig. 1 and 2, two internal threaded holes 4 are formed in the top of the upper plate 1, and the internal threaded holes 4 extend into the pillars 3 through the upper plate 1 and the lower plate 2. The internal thread hole 4 is matched with the bolt 19, so that the upper plate body 1 and the base plate 20 can be connected together for installing a steel rail fastener; the bolt 19 extends through the internally threaded hole 4 to the interior of the post 3, thereby improving the integrity and strength of the fastener.

As shown in fig. 1, fig. 2 and fig. 3, the external thread is arranged outside the pillar 3, and the external thread of the pillar 3 can effectively increase the contact area between the fastener and the quick-dry cement or adhesive, so that the connection between the fastener and the structure under the rail can be enhanced, and the strength and the pull-out resistance of the pillar 3 are increased.

In some embodiments, the support of the fastener is made of glass fiber reinforced polyamide 66 material, which has been widely applied in embedded sleeves and has the advantages of long service life, high strength and the like.

In addition, as shown in fig. 1, fig. 2 and fig. 3, the present embodiment further includes a method for constructing a direct-buried fastener, the method comprising:

1) a lower plate body installation groove is drilled at the installation position of the direct-buried fastener, the lower plate body installation groove is a cuboid space, the size of the lower plate body installation groove is 450-290-55 mm, and the size and the shape of the lower plate body installation groove are matched with the size and the shape of the lower plate body 2;

2) after the lower plate body mounting groove is dug, a support mounting hole is dug in the lower plate body mounting groove, the support mounting hole is a hole with the diameter of 122mm and the depth of 190mm, and the size and the shape of the support mounting hole are matched with those of the support 3;

3) after the drilling of the support mounting hole is finished, pouring quick-drying cement or adhesive into the lower plate mounting groove, wherein the quick-drying cement or adhesive can enter the support mounting hole along the lower plate mounting groove;

4) pressing the direct-buried fastener into a lower plate body mounting groove to enable the support column 3 to be mounted in the support column mounting hole, and mounting the lower plate body 2 in the lower plate body mounting groove until the bottom surface of an upper plate body 1 of the direct-buried fastener is in contact combination with the top surface of a ballast bed 7;

5) the rails and corresponding fastener systems are applied above the tie plate.

Although the conception and the embodiments of the present invention have been described in detail with reference to the drawings, those skilled in the art will recognize that various changes and modifications can be made therein without departing from the scope of the appended claims, and therefore, the description thereof is not repeated herein.

Claims

1. The utility model provides a direct-burried fastener installs on orbital way bed, its characterized in that: the novel bearing plate comprises a base plate and a supporting column, wherein the base plate comprises an upper plate body and a lower plate body, the size of the lower plate body is smaller than that of the upper plate body, the upper plate body is integrally connected with the lower plate body and the supporting column, the lower plate body is connected with the lower plate body, and the supporting column is connected to the bottom of the lower plate body in a two-alignment mode.

2. A fastener of claim 1, wherein: the utility model discloses a support, including support, upper plate body, lower plate body, upper plate body and lower plate body, the support outside is equipped with the external screw thread, two internal thread holes have been seted up at upper plate body top, the internal thread hole warp the upper plate body with the lower plate body extends to inside the support.

3. A fastener of claim 1, wherein: the bottom of the lower plate body is provided with a plurality of bosses which are uniformly arranged along the transverse and longitudinal directions of the lower plate body, a plurality of grooves which are staggered transversely and longitudinally are formed among the bosses, and two symmetrically arranged discharge ports are arranged in the middle of the edge of the joint of the upper plate body and the lower plate body.

4. A fastener of claim 1, wherein: the two pillars are respectively installed in two pillar mounting holes of the ballast bed, the depth and the diameter of each pillar mounting hole are both satisfied with the installation requirements of the pillar, the lower plate body is installed in the lower plate body mounting groove of the ballast bed, and the length, the width and the height of the lower plate body mounting groove are all satisfied with the installation requirements of the lower plate body.