阅读说明：本技术 一种具有自锁功能的内防盗弹条钢轨扣件 (Internal anti-theft spring steel rail fastener with self-locking function ) 是由 毛瑞辰 朱秀艳 李岗 马晓飞 谢永福 徐挺 孟雪 刘博� 于 2021-09-01 设计创作，主要内容包括：本发明专利属于一种具有自锁功能的内防盗弹条钢轨扣件,包括水泥轨枕,在水泥轨枕上面的两侧,对称地装有两对预埋铁座；在预埋铁座头部上设有一个前后通透的城门形内腔,其特征在于在城门形内腔内部的顶面上设有一个横截面呈直角梯形的环形凸台,环形凸台的右面设有一个斜面,斜面与腔壁的夹角为α,α＝150°～165°,环形凸台的左面与腔壁的夹角为90°；内防盗弹条的圆柱形安装部在城门形内腔的右侧穿入,圆柱形安装部的端部设有倒角,在倒角的右侧设有环形槽,环形凸台卡在环形槽中。该发明专利便于安装,防盗效果好,且不会松脱。(The invention belongs to an internal anti-theft spring steel rail fastener with a self-locking function, which comprises a cement sleeper, wherein two pairs of embedded iron seats are symmetrically arranged on two sides of the upper surface of the cement sleeper; the head of the embedded iron seat is provided with a front-back through city gate-shaped inner cavity, and the embedded iron seat is characterized in that the top surface in the city gate-shaped inner cavity is provided with an annular boss with a right trapezoid cross section, the right surface of the annular boss is provided with an inclined plane, the included angle between the inclined plane and the cavity wall is alpha, the alpha is 150-165 degrees, and the included angle between the left surface of the annular boss and the cavity wall is 90 degrees; the cylindrical installation department of interior theftproof bullet strip penetrates on the right side of city door-shaped inner chamber, and the tip of cylindrical installation department is equipped with the chamfer, is equipped with the ring channel on the right side of chamfer, and the annular boss card is in the ring channel. The anti-theft lock is convenient to install, good in anti-theft effect and free from loosening.)

1. An internal anti-theft elastic strip steel rail fastener with a self-locking function comprises a cement sleeper (1), wherein two pairs of embedded iron seats (2) are symmetrically arranged on two sides of the upper surface of the cement sleeper (1), the lower parts of the embedded iron seats (2) are fixed in the cement sleeper (1), the head parts (2-1) of the embedded iron seats protrude out of the upper surface of the cement sleeper (1), a rail lower base plate (6) is paved on the cement sleeper (1) between each pair of the embedded iron seats (2), an I-shaped steel rail (4) is paved on the rail lower base plate (6), an insulating gauge block (5) is arranged between the steel rail (4) and the head parts (2-1) of the embedded iron seats, one end of the insulating gauge block (5) abuts against the side surface of the head parts (2-1) of the embedded iron seats, and the other end of the insulating gauge block is lapped on the protruding part below the steel rail (4); the embedded iron seat head (2-1) is provided with a front-back through urban portal inner cavity (2-2), and is characterized in that the top surface inside the urban portal inner cavity (2-2) is provided with an annular boss (2-3) with a right trapezoid cross section, the right side of the annular boss (2-3) is provided with an inclined plane (2-4), the included angle between the inclined plane (2-4) and the cavity wall is alpha, alpha is 150-165 degrees, and the included angle between the left side of the annular boss (2-3) and the cavity wall is 90 degrees; a cylindrical installation part (3-1) of the inner anti-theft elastic strip (3) penetrates into the right side of the urban door-shaped inner cavity (2-2), a chamfer (3-1-2) is arranged at the end part of the cylindrical installation part (3-1), an annular groove (3-1-1) is arranged on the right side of the chamfer (3-1-2), and an annular boss (2-3) is clamped in the annular groove (3-1-1).

2. The steel rail fastener with self-locking function of internal anti-theft elastic strip according to claim 1, wherein the included angle between the inclined plane (2-4) and the cavity wall is α, α is 157.5 °.

Technical Field

The invention belongs to railway accessories, and particularly relates to an internal anti-theft elastic strip steel rail fastener with a self-locking function.

Background

In modern society, rail transportation is related to thousands of households, and the safety of the steel rail as a rail of a train is particularly important. At present, in the laying of railway rails, a rail lower base plate is firstly placed between two pre-buried iron seats on a sleeper, then the rails are placed on the rail lower base plate, an insulating gauge block is placed between the rails and the pre-buried iron seats, one end of the insulating gauge block is lapped on a protruding part below the rails, finally, a columnar installation part of an elastic strip is inserted into a cavity on the upper part of the pre-buried iron seats, a pressing part of the elastic strip presses the insulating gauge block by applying downward elastic force, and then the rails are fixed on the sleeper. Although the installation mode can well fix the steel rail on the sleeper, the installation mode does not have the anti-theft function, and the spring bar can be easily detached by lawless persons, thereby bringing hidden danger to the transportation safety of railways.

Disclosure of Invention

The invention aims to overcome the technical defects, and provides an internal anti-theft elastic strip steel rail fastener with a self-locking function, which is characterized in that an annular boss with a certain angle is prefabricated in a cavity at the upper part of an embedded iron seat, an annular groove is prefabricated at the head part of a columnar installation part on an elastic strip, and the annular boss is clamped in the annular groove after the elastic strip is connected with the embedded iron seat, so that self-locking and anti-theft are realized

The technical problem solved by the patent of the invention is that the adopted technical scheme is as follows: an internal anti-theft elastic strip steel rail fastener with a self-locking function comprises a cement sleeper, wherein two pairs of embedded iron seats are symmetrically arranged on two sides of the upper surface of the cement sleeper, the lower parts of the embedded iron seats are fixed in the cement sleeper, the head parts of the embedded iron seats are protruded on the cement sleeper, a lower rail base plate is paved on the cement sleeper between each pair of the embedded iron seats, an I-shaped steel rail is paved on the lower rail base plate, an insulating gauge block is arranged between the steel rail and the head parts of the embedded iron seats, one end of the insulating gauge block is propped against the side surface of the head parts of the embedded iron seats, and the other end of the insulating gauge block is lapped on the protruded part below the steel rail; the head of the embedded iron seat is provided with a front-back through city gate-shaped inner cavity, and the embedded iron seat is characterized in that the top surface in the city gate-shaped inner cavity is provided with an annular boss with a right trapezoid cross section, the right surface of the annular boss is provided with an inclined plane, the included angle between the inclined plane and the cavity wall is alpha, the alpha is 150-165 degrees, and the included angle between the left surface of the annular boss and the cavity wall is 90 degrees; the cylindrical installation department of interior theftproof bullet strip penetrates on the right side of city door-shaped inner chamber, and the tip of cylindrical installation department is equipped with the chamfer, is equipped with the ring channel on the right side of chamfer, and the annular boss card is in the ring channel.

The inclined plane and the chamber wall form an included angle alpha which is 157.5 degrees.

The anti-theft lock has the beneficial effects that the anti-theft lock is convenient to install, good in anti-theft effect and free from loosening.

Drawings

The following description is made in detail by way of example with reference to the accompanying drawings.

FIG. 1 is a front view of an internal anti-theft spring steel rail fastener with self-locking function;

FIG. 2 is a top view of FIG. 1;

FIG. 3 is a front view of the pre-buried iron seat in FIG. 1;

FIG. 4 is a sectional view A-A of FIG. 3;

FIG. 5 is a three-dimensional view of the inner tamper-resistant band of FIG. 1;

fig. 6 is an enlarged view at I in fig. 4.

In the figure: 1-cement sleeper; 2-pre-embedding an iron seat; 2-1-embedding the head part of the iron seat; 2-2-a portal cavity; 2-3-annular boss; 2-4-bevel; 3-inner anti-theft elastic strip; 3-1-cylindrical mounting portion; 3-1-1-ring groove; 3-1-2-chamfering; 4-steel rail; 5-insulating gauge blocks; 6-rail lower backing plate.

Detailed Description

In the embodiment, referring to the attached drawings, the internal anti-theft elastic strip steel rail fastener with the self-locking function comprises a cement sleeper 1, wherein two pairs of embedded iron seats 2 are symmetrically arranged on two sides of the upper surface of the cement sleeper 1, the lower parts of the embedded iron seats 2 are fixed in the cement sleeper 1, the head parts 2-1 of the embedded iron seats protrude out of the upper surface of the cement sleeper 1, a lower rail base plate 6 is paved on the cement sleeper 1 between each pair of the embedded iron seats 2, an I-shaped steel rail 4 is paved on the lower rail base plate 6, an insulating gauge block 5 is arranged between the steel rail 4 and the head parts 2-1 of the embedded iron seats, one end of the insulating gauge block 5 is propped against the side surface of the head part 2-1 of the embedded iron seats, and the other end of the insulating gauge block is lapped on the protruding part of the lower surface of the steel rail 4; the embedded iron seat is characterized in that an annular boss 2-3 with a right trapezoid cross section is arranged on the top surface inside the urban door-shaped inner cavity 2-2, an inclined plane 2-4 is arranged on the right side (shown in figure 4) of the annular boss 2-3, the included angle between the inclined plane 2-4 and the cavity wall is alpha, alpha is 157.5 degrees, and the included angle between the left side (shown in figure 4) of the annular boss 2-3 and the cavity wall is 90 degrees; the cylindrical installation part 3-1 of the inner anti-theft elastic strip 3 is inserted into the right side (shown in attached figures 4 and 5) of the urban door-shaped inner cavity 2-2, the end part of the cylindrical installation part 3-1 is provided with a chamfer 3-1-2, the right side of the chamfer 3-1-2 is provided with an annular groove 3-1-1, and the annular boss 2-3 is clamped in the annular groove 3-1-1.

The working principle of the invention is as follows: when the cylindrical installation part 3-1 of the inner anti-theft elastic strip 3 is inserted into the through front-back urban door-shaped inner cavity 2-2 arranged on the head part 2-1 of the embedded iron seat, the cylindrical installation part 3-1 of the anti-theft elastic strip 3 can be easily inserted because the insertion end part of the anti-theft elastic strip 3 is provided with the chamfer 3-1-2 and the included angle between the right inclined plane 2-4 of the annular boss 2-3 and the cavity wall is 150-165 degrees. After the anti-theft elastic strip is inserted, the annular boss 2-3 is clamped in the annular groove 3-1-1, and because the included angle between the left surface (shown in attached figure 4) of the annular boss 2-3 and the cavity wall is 90 degrees, the cylindrical installation part 3-1 of the anti-theft elastic strip 3 cannot be drawn out from the city gate-shaped inner cavity 2-2 without using a special tool, so that the anti-theft purpose is achieved.