CN214529969U

CN214529969U - Low III type sleeper

Info

Publication number: CN214529969U
Application number: CN202120355347.3U
Authority: CN
Inventors: 欧阳炎
Original assignee: Individual
Current assignee: Individual
Priority date: 2021-02-09
Filing date: 2021-02-09
Publication date: 2021-10-29
Anticipated expiration: 2031-02-09

Abstract

The utility model relates to a short III type rail pillow, including sleeper body and support rail groove, the interval is provided with a plurality of prestressing tendons in the sleeper body, has arranged a plurality of stirrups along sleeper body transverse separation on prestressing tendons, is equipped with reinforcing bar net one at the tip of sleeper body, is equipped with reinforcing bar net two below the support rail groove, and sleeper body lower part between the support rail groove is equipped with reinforcing bar net three, and the fender shoulder position pre-buried of support rail groove both sides has the reinforcing bar component that is used for preventing the sleeper to keep off shoulder position and produce the crackle in drawing of patterns process. Above-mentioned technical scheme sets up the prestressing tendons in the sleeper body, still sets up the reinforcing bar of different specifications respectively at its tip, support rail groove below and middle part bottom, and in the atress region of difference, according to the atress size different with the direction, adopt the reinforcing bar net of different specifications, and arrange in the sleeper with different modes, can satisfy the atress requirement of III type sleepers to when satisfying the clean space demand, also accord with the parameter requirement of III type sleepers, the practicality is strong.

Description

Low III type sleeper

Technical Field

The utility model relates to a sleeper, in particular to short III type sleeper.

Background

With the increasing status of railway transportation in the transportation industry, the laying range of sleepers worldwide is also increased. Along with the transformation of electrified circuit, the problem of not enough clear space has appeared in more and more highway sections, the difficult problem of falling the way, if want to solve the clear space not enough, can only reduce sleeper thickness but how to design the sleeper can enough reduce sleeper thickness, can satisfy the requirement of III type sleeper each item parameter again and is the problem that technical staff in this field await the opportune moment to solve.

In addition, the sleeper is used as a special product for the railway, and the quality of the sleeper is related to the life safety of people. The sleeper shoulder-blocking crack is a common failure phenomenon in the railway line operation process. One reason is that the sleeper fails due to improper use during use; the other is that invisible hidden cracks and visible cracks (directly judged as waste products) are caused by sleeper manufacturing process reasons in the sleeper manufacturing process, and the hidden cracks gradually develop and crack in the using process until the hidden cracks fail. After the thickness of the sleeper is reduced, the tensioning prestress of the sleeper with small thickness is larger, the rail bearing groove has a slope with low inside and high outside, and the sleeper is easy to be damaged by stress and cracked at the position because the shoulder blocking position of the sleeper is restricted by the steel model rail groove plate due to the stress deformation when the sleeper is demoulded and tensioned, thereby influencing the yield and the service life of the sleeper.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a can solve the short III type sleeper of the problem of the difficulty of falling to the road that leads to inadequately because of the clean space.

In order to realize the purpose, the utility model provides a low III type sleeper, which comprises a sleeper body and a rail bearing groove arranged on the sleeper body, wherein a preformed hole or a pre-embedded plastic sleeve which extends downwards to the bottom of the sleeper body is arranged in the rail bearing groove, the thickness of the sleeper body is 150mm-200mm, spiral ribs are arranged on the sleeper body around the preformed hole or the pre-embedded plastic sleeve, a plurality of prestressed ribs are arranged at intervals in the middle of the sleeper body, a plurality of stirrups are arranged on the prestressed ribs along the transverse interval of the sleeper body, a reinforcing steel bar mesh I is arranged at the end part of the sleeper body along the transverse direction of the sleeper body, a reinforcing steel bar mesh II is arranged in the sleeper body above the prestressed ribs below the rail bearing groove, a reinforcing steel bar mesh III is arranged on the bottom surface in the middle of the sleeper, reinforcing steel bar members used for preventing the crack of the shoulder blocking part in the demoulding process are pre-embedded at the shoulder blocking parts at the two sides of the rail bearing groove, the rebar member is transversely disposed in the tie body.

Furthermore, the first reinforcing mesh, the second reinforcing mesh and the third reinforcing mesh are reinforcing meshes with different specifications, wherein the first reinforcing mesh is made of round steel bars through resistance welding or manual spot welding; the second reinforcing mesh and the third reinforcing mesh are made of round steel bars through resistance welding or manual spot welding, or the second reinforcing mesh and the third reinforcing mesh are made through binding and forming.

Further, the first reinforcing mesh is transversely arranged along the sleeper body and vertically arranged in the sleeper body, and the second reinforcing mesh and the third reinforcing mesh are horizontally arranged in the sleeper body.

Furthermore, the shoulder side slope reinforcement comprises a plurality of Z-shaped steel bars, the Z-shaped steel bars are fixed on the connecting piece at equal intervals, and the Z-shaped steel bars at the two ends of the connecting piece are inclined towards the center line of the connecting piece and are close to the center line of the connecting piece so as to match the size of the rail bearing groove.

Furthermore, the Z-shaped reinforcing steel bar is formed by bending round reinforcing steel bars.

Furthermore, one end of the Z-shaped steel bar, which is far away from the rail bearing groove, is provided with a downward bend.

Further, keep off shoulder upper portion reinforcement include a plurality of reinforcing bars that are the L shape, a plurality of L shape reinforcing bars are connected the connecting piece is kept away from one side of Z shape reinforcing bar, and with Z shape reinforcing bar staggered arrangement.

Compared with the prior art, the utility model discloses following technological effect has:

1. the utility model discloses not only set up the prestressing tendons in the sleeper body, still set up the reinforcing bar of different specifications respectively in its tip, below the rail supporting groove and the bottom at its middle part, in different stress areas, according to the atress size and the direction difference, adopt the reinforcing bar net of different specifications, and arrange in the sleeper in different modes, reasonable in design, can satisfy the atress and the intensity requirement of rail III type sleeper, thereby when reducing to the demand that satisfies the clear space at sleeper body thickness, also accord with the parameter requirement of III type sleeper, therefore the practicality is strong;

2. the utility model effectively avoids the cracks generated due to stress deformation when the sleeper is demoulded and tensioned by pre-embedding the steel bar component at the shoulder blocking part, improves the finished product of the product manufacture, and prolongs the service life of the product, thereby improving the economic benefit of sleeper production enterprises and reducing the later replacement cost of the railway sleeper;

3. the utility model discloses a reinforcing bar component is formed by the round steel welding, simple structure, reasonable in design, and the practicality is strong, and the round steel adopt the workshop leftover bits can, convenient for material collection, cost of manufacture are low, easily implement widely.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate preferred embodiments of the invention and together with the description, serve to explain the principles of the invention. In the figure:

FIG. 1 is a schematic block diagram of the low type III sleeper of the present invention;

FIG. 2 is a schematic view of the placement of the rebar members in the tie body;

FIG. 3 is a schematic internal structural view of the low type III sleeper of the present invention at the rail receiving groove;

fig. 4 is a schematic perspective view of the reinforcing bar member.

The reference numbers in the figures denote the following meanings: 100 is a sleeper body; 200 is a rail bearing groove; 300 is a steel bar component, 310 is a shoulder-blocking slope reinforcement, 320 is a shoulder-blocking upper reinforcement, 330 is a connector, 311 is a Z-shaped steel bar, 311A is a groove part extending into a bearing rail, 311B is a slope protection part, 311C is a body part extending into a sleeper, 311D is a strengthening part, and 321 is an L-shaped steel bar; 400 is a shoulder; 500 is a prestressed tendon; 600 is a hoop, 700 is a reinforcing mesh I, and 800 is a reinforcing mesh II; 900 is a reinforcing mesh III; 110 are spiral ribs.

Detailed Description

The embodiments of the invention will be described in detail below with reference to the drawings, but the invention can be embodied in many different forms and covered by the claims.

Example 1: a preferred embodiment of the low type iii sleeper of the present invention will now be described in detail with reference to figures 1, 2, 3 and 4.

Example 1: as shown in fig. 1 and 2, a low iii type sleeper includes a sleeper body 100 and a rail supporting groove 200 disposed on the sleeper body 100, a preformed hole or a pre-embedded plastic sleeve extending downward to the bottom of the sleeper body 100 is disposed in the rail supporting groove 200, the thickness of the sleeper body is 150mm-200mm, the height below the sleeper rail of this embodiment is 160mm, and the thickness of the sleeper body 100 is 190 mm. Be provided with spiral muscle 100 on the sleeper body around preformed hole or pre-buried plastic casing, set up the bearing capacity of spiral muscle 100 enhancement preformed hole, when chooseing for use pre-buried plastic casing's fastener connected mode, strengthen the cohesion of pre-buried plastic casing and sleeper body to improve its bearing capacity, spiral muscle 100 adopts the diameter to be 3 mm low carbon cold drawn steel wire. The stirrup 600 of this embodiment is a low carbon hot rolled circular rod with a diameter of 6 mm. The prestressed steel sleeper is characterized in that a plurality of prestressed tendons 500 are arranged in the sleeper body 100 at intervals, a plurality of stirrups 600 are arranged on the prestressed tendons 500 at intervals along the sleeper body 100 in the transverse direction, the prestressed tendons are deformed steel wires with the diameter of 7mm, the stirrups 600 are fixed on the prestressed tendons 500 in a binding mode, and the stirrups 500 are made of round steel bars with the diameter of 7 mm. In this embodiment, the number of the tendons is 16, the number of the stirrups 600 is 8, and the total tensile force of the tendons 500 of this embodiment is 725 KN. The distance of the stirrups 600 between the adjacent stirrups in the sleeper body 100 below the rail bearing groove 200 is less than the distance between the two stirrups at the two ends and the middle part of the sleeper body 100, that is to say, the stirrups in the compression area of the rail bearing groove 200 at the sleeper are the most dense, so that the requirement of the sleeper under compression is met, and then the distance between the stirrups at the end part of the sleeper body 100 is less than the distance between the two stirrups at the middle part of the sleeper body 100. At the end of the sleeper body 100, there are reinforcing mesh one 700 arranged along the transverse direction of the sleeper body, and 3 reinforcing mesh one are arranged in the sleeper body 100 at equal intervals, so as to ensure the strength of the sleeper end. The second reinforcing mesh 800 is arranged in the sleeper body above the prestressed tendons below the rail bearing groove 200, the third reinforcing mesh 900 is arranged on the bottom surface of the middle part of the sleeper body 100, the second reinforcing mesh 800 and the third reinforcing mesh 900 are horizontally arranged in the sleeper body 100, in different stress areas, according to different stress sizes and directions, reinforcing meshes of different specifications are adopted, and are arranged in the sleeper in different modes, the design is reasonable, stress and strength requirements of the III-type sleeper of the rail can be met, and therefore when the thickness of the sleeper body is reduced to meet the requirements of a clean space, the parameter requirements of the III-type sleeper are met. The first reinforcing mesh 700, the second reinforcing mesh 800 and the third reinforcing mesh 900 are reinforcing meshes with different specifications, wherein the first reinforcing mesh is made of round steel bars through resistance welding or manual spot welding; the second reinforcing mesh is made of round steel bars through resistance welding or manual spot welding, or the second reinforcing mesh 800 and the third reinforcing mesh 900 are formed through binding. In this embodiment, the first mesh reinforcement 700, the second mesh reinforcement 800 and the third mesh reinforcement 900 are made of steel bars with a diameter of 6mm to 18mm, but the arrangement of the steel bars of the mesh reinforcements is different, and specifically, the sleeper of the present invention has an under-rail crack resistance of more than 210KN and an under-sleeper crack resistance of more than 162KN according to TB/T1879 "static load test method for prestressed concrete sleeper".

As shown in fig. 3, the reinforcement member 300 for preventing the shoulder 400 from cracking during the demolding process of the sleeper is embedded in the shoulder 400 at both sides of the rail bearing groove 200, the reinforcement member 300 is transversely disposed in the sleeper body 100, the reinforcement member 300 can be fixed on the stirrup inside the sleeper body 100 by means of binding or welding, the reinforcement member 300 includes a shoulder slope reinforcement 310 at the bottom of the rail bearing groove 200 and the junction of the shoulder 400 and a shoulder upper reinforcement 320 at the junction of the top of the sleeper body 100 and the shoulder 400, the shoulder slope reinforcement 310 and the shoulder upper reinforcement 320 are fixedly connected by a connecting member 330, the shoulder slope reinforcement 310 extends downwards from the upper middle of the shoulder 400 to the lower part of the shoulder 400 and extends away from the shoulder, the length of the shoulder slope reinforcement 310 extending to the rail bearing groove 200 is about 100 mm-300 mm, and the shoulder slope reinforcement can extend to the bottom of the rail bearing groove 200 to play a corresponding role, and is not limited to length. The utility model discloses a setting up and keeping off shoulder side slope reinforcement 310 and preventing to keep off shoulder 400 and support rail groove 200 junction and produce the crackle, keep off shoulder upper portion reinforcement 320 and upwards extend and bend to the direction of keeping away from and keeping off shoulder 400 by the well upper portion that keeps off shoulder 400, keep off shoulder upper portion reinforcement 320 through the design and prevent to keep off and produce the crack between shoulder 400 and sleeper body 100. The connecting piece 330 is formed by cutting off a long-strip-shaped round steel bar. Through keeping off the pre-buried reinforcing bar component in shoulder position, the reinforcing bar component is equivalent to the bearing and lives and keeps off shoulder position, effectively avoids putting the production crackle because of stress deformation when tensile at the sleeper drawing of patterns, improves the finished product of product preparation to prolong its life.

As shown in fig. 4, the shoulder slope reinforcement 310 includes a plurality of Z-shaped reinforcing bars, a plurality of Z-shaped reinforcing bars 311 are fixed on the connecting member 330 at equal intervals, and the Z-shaped reinforcing bars at the two ends of the connecting member 330 are inclined toward the center line of the connecting member 300 to match the size of the rail groove. Z shape reinforcing bar 311 is bent by round steel bar and is formed, and the department of bending of Z shape reinforcing bar is the fillet, and Z shape reinforcing bar adopts the integral type structure, the preparation of being convenient for, and can not produce welding stress. The Z-shaped steel bar 311 has a rail supporting groove 311A, a slope protection part 311B, a sleeper body 311C and a reinforcement part 311D, the rail supporting groove 311A is located below the rail supporting groove 200, the slope protection part 311B is arranged on the inner side of the slope, the sleeper body 311C is combined with the sleeper body 100, and the reinforcement part 311D also extends downward, so that the binding force between the steel bar structural member and the sleeper body is improved, and the anti-cracking effect is enhanced.

Keep off shoulder upper portion reinforcement 320 and include a plurality of reinforcing bars that are the L shape, a plurality of L shape reinforcing bars 321 are connected in the connecting piece and are kept away from one side of Z shape reinforcing bar 311, and with Z shape reinforcing bar 311 staggered arrangement, Z shape reinforcing bar 311 and L shape reinforcing bar 321 all adopt the welded mode to be connected with connecting piece 330, and staggered arrangement prevents stress concentration to improve the bulk strength of reinforcing bar component. The L-shaped reinforcing bar 321 may be formed by bending a long round bar, or two bars may be welded together.

Example 2: as another embodiment of the present invention, the content of this embodiment is substantially the same as that of embodiment 1, except that: as shown in fig. 4, the end of the Z-shaped steel bar far from the rail-supporting groove is provided with a downward bending part 311D, and the downward bending part 311D facilitates not only connection with the steel bar net inside the sleeper, but also combination of the steel bar member and the sleeper body, thereby improving the strength of the sleeper.

The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A low III type sleeper comprises a sleeper body and a rail bearing groove arranged on the sleeper body, wherein a preformed hole or a pre-buried plastic sleeve extending downwards to the bottom of the sleeper body is arranged in the rail bearing groove, the thickness of the sleeper body is 150mm-200mm, and a spiral rib is arranged on the sleeper body around the preformed hole or the pre-buried plastic sleeve, the low III type sleeper is characterized in that a plurality of pre-stressed ribs are arranged in the sleeper body at intervals, a plurality of stirrups are arranged on the pre-stressed ribs at intervals along the transverse direction of the sleeper body, a reinforcing steel bar net I is arranged at the end part of the sleeper body along the transverse direction of the sleeper body, a reinforcing steel bar net II is arranged in the sleeper body above the pre-stressed steel bars below the rail bearing groove, a reinforcing steel bar net III is arranged on the bottom surface in the middle of the sleeper, reinforcing steel bar members for preventing the shoulder parts of the sleeper from cracking in the demoulding process are pre-buried at the shoulder parts on the two sides of the rail bearing groove, the rebar member is transversely disposed in the tie body.

2. The low type III sleeper as claimed in claim 1, wherein the first, second and third steel bar meshes are steel bar meshes of different specifications, wherein the first steel bar mesh is made of round steel bars by resistance welding or manual spot welding; the second reinforcing mesh and the third reinforcing mesh are made of round steel bars through resistance welding or manual spot welding, or the second reinforcing mesh and the third reinforcing mesh are made through binding and forming.

3. The low type iii sleeper of claim 2, wherein said first mesh reinforcement is disposed laterally along and vertically within said sleeper body, and said second and third mesh reinforcement are disposed horizontally within said sleeper body.

4. The low type III sleeper according to claim 1, wherein said reinforcement member includes a shoulder rib reinforcement at a junction between said rail receiving groove bottom and said shoulder rib and a shoulder upper reinforcement at a junction between said sleeper body top surface and said shoulder rib, said shoulder rib reinforcement and said shoulder upper reinforcement being fixedly connected by a connector, said shoulder rib reinforcement extending downwardly from a shoulder upper middle portion to a shoulder lower portion and extending in a direction away from said shoulder rib, said shoulder upper reinforcement extending upwardly from said shoulder upper middle portion and extending in a direction away from said shoulder rib.

5. A low type III sleeper as defined in claim 4 wherein said shoulder side slope reinforcement includes a plurality of Z-shaped reinforcing bars fixed to said connector at equal intervals, and the Z-shaped reinforcing bars at the two ends of said connector are inclined toward the center line of said connector to match the size of the rail grooves.

6. A low III sleeper as defined in claim 5 wherein, said Z-shaped reinforcing bars are formed by bending round reinforcing bars.

7. A low type III sleeper as defined in claim 5 wherein, the ends of said Z-shaped reinforcing bars remote from said rail grooves are provided with downward bends.

8. A low type III sleeper as defined in claim 5 wherein said shoulder upper reinforcement includes a plurality of L-shaped reinforcing bars connected to said connecting member on a side thereof remote from said Z-shaped reinforcing bars and staggered with said Z-shaped reinforcing bars.