Embedded sleeve for railroad sleeper

Abstract

The utility model discloses an embedded casing pipe for a railroad sleeper, which comprises a casing pipe main body and a turnover device arranged at the bottom of the casing pipe main body, and the turnover device comprises a turnover cover and a turnover sheet arranged in the turnover cover. Compared with the prior art, the embedded sleeve for the railroad sleeper has the advantages that the embedded sleeve for the railroad sleeper can prevent mud at the bottom from splashing in the normal service stage; when sundries are accumulated at the bottom of the sleeve, the sundries are cleaned and discharged through the bottom turnover device, normal installation of the screw spikes is guaranteed, and the situation that buckling pressure is reduced due to the fact that the elastic strips are not fastened in place through the screw spikes, and potential safety hazards are caused to the track is avoided.

Description

Technical Field

[0001] The utility model relates to a pre-buried sleeve for railway sleepers. Background Art

[0002] The fastener system is an important component of railway track transportation. It fastens the spring bar through the friction between the threaded contact surface of the spiral spike and the embedded casing, thereby fixing the rail.

[0003] In order to prevent mud from splashing under the track, the lower end of the embedded casing is usually sealed. However, during the service of the embedded casing, due to the long-term repeated action of the wheel-rail force, a gap appears between the threaded contact surface of the bolt and the embedded casing, and dust, sand and gravel and other debris will enter the bottom of the casing through the gap; at the same time, when the bolts are removed during railway operation and maintenance, the debris around the embedded casing mouth may also be accidentally pushed into the bottom of the embedded casing. When there are too many debris at the bottom of the casing, the spiral spike cannot be installed normally, resulting in a decrease in the pressure of the spring clip, posing a hidden danger to the safety of the railway track. Utility Model Content

[0004] In order to overcome the above-mentioned shortcomings of the prior art, the utility model proposes an embedded sleeve for railway sleepers. A flipping device is installed at the bottom of the embedded sleeve. When debris accumulates at the bottom of the embedded sleeve, the flipping piece can be flipped by prying it with a thin rod to discharge the debris at the bottom. After the flipping piece is reset, mud can be prevented from splashing in.

[0005] The utility model solves the technical problem by adopting a technical solution: a pre-buried sleeve for railway sleepers, comprising a sleeve body and a flip device arranged at the bottom of the sleeve body, wherein the flip device comprises a flip cover and a flip sheet arranged in the flip cover.

[0006] Furthermore, the flip sheet is mounted on the bottom of the flip cover through two symmetrically arranged rotating pins cooperating with two symmetrically arranged mounting pin holes on the flip cover.

[0007] Furthermore, a guide rail groove is provided on the mounting pin hole.

[0008] Furthermore, an opening and a supporting plane are arranged at the bottom of the flip cover.

[0009] Furthermore, a mark is provided on the top surface of the sleeve body, corresponding to the opening direction of the lower flip cover.

[0010] Furthermore, a cylindrical boss is arranged on the flip sheet, and the cylindrical boss is inserted into a through hole arranged at a corresponding position of the supporting plane.

[0011] Furthermore, the cylindrical boss and the cylindrical surface of the through hole cooperate with each other in drafting at a certain angle to ensure that the cylindrical boss will not fall off easily after being inserted into the through hole.

[0012] Furthermore, an annular groove is provided at the bottom end of the sleeve body, and an annular protrusion is provided on the side wall of the flip cover, and the sleeve body and the flip cover are tightly connected through the cooperation of the annular protrusion and the annular groove.

[0013] Furthermore, two reinforcing ribs are symmetrically arranged on the outer wall of the sleeve body.

[0014] Compared with the prior art, the positive effects of the utility model are:

[0015] The utility model provides a pre-buried casing for railway sleepers, which can avoid splashing of bottom mud during normal service; when debris is accumulated at the bottom of the casing, the debris is cleaned and discharged through a bottom turning device, thereby ensuring normal installation of spiral spikes and preventing the buckling pressure from decreasing due to inadequate fastening of the spiral spikes to the spring strips, thereby causing potential safety hazards to the track. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The present invention will be described by way of examples with reference to the accompanying drawings, in which:

[0017] Figure 1 It is a front cross-sectional schematic diagram of a pre-buried casing for railway sleepers described in the utility model during normal service;

[0018] Figure 2 It is a three-dimensional schematic diagram of a pre-buried casing for railway sleepers according to the utility model;

[0019] Figure 3 It is a front cross-sectional schematic diagram of a pre-buried casing for railway sleepers according to the utility model when a bottom turning device is working during operation and maintenance;

[0020] Figure 4 It is a side cross-sectional schematic diagram of a pre-buried casing for railway sleepers according to the utility model when the bottom turning device is working during operation and maintenance;

[0021] Figure 5 It is a partially enlarged schematic diagram of the embedded casing body 1 and its bottom end;

[0022] Figure 6 It is a schematic diagram of the three-dimensional structure of the flip sheet 2;

[0023] Figure 7 It is a schematic diagram of the three-dimensional structure of the flip cover 3;

[0024] The reference numerals in the figure include: sleeve body 1, external thread 11, internal thread 12, reinforcing rib 13, annular groove 14, flip sheet 2, rotating pin 21, cylindrical boss 22, flip cover 3, mounting pin hole 31, through hole 32, annular protrusion 33, opening 34, supporting plane 35. DETAILED DESCRIPTION

[0025] like Figures 1 to 3 As shown, a pre-buried sleeve for railway sleepers of the utility model comprises a sleeve body 1 and a flip device arranged at the bottom of the sleeve body 1 , wherein the flip device comprises a flip cover 3 and a flip sheet 2 arranged in the flip cover 3 .

[0026] like Figure 4 and Figure 5 As shown, the outer wall of the casing body 1 is provided with an outer thread 11 that matches the concrete sleeper, and the inner wall is provided with an inner thread 12 that matches the spiral spike. Two reinforcing ribs 13 are symmetrically provided on the outer wall of the embedded casing; and an annular groove 14 is also provided at the bottom end of the casing body 1.

[0027] like Figure 6 As shown, two rotating pins 21 and a cylindrical boss 22 are symmetrically arranged on the flip plate 2.

[0028] like Figure 7 As shown, an opening 34 and a supporting plane 35 are arranged at the bottom of the flip cover 3, two mounting pin holes 31 and an annular protrusion 33 are symmetrically arranged on the side wall of the flip cover, and a through hole 32 is arranged on the supporting plane 35 of the flip cover.

[0029] When assembling the embedded sleeve, first insert the rotating pin 21 of the flip piece 2 into the mounting pin hole 31 along the guide groove provided on the mounting pin hole 31 in the flip cover 3 to ensure that the cylindrical boss 22 is inserted into the through hole 32. The flip piece 2 can rotate freely. Due to the influence of the processing accuracy, a small gap can be allowed between the flip piece 2 and the bottom cavity of the sleeve body 1 and the inner wall of the flip cover 3; then press the flip cover 3 directly into the bottom of the sleeve body 1, and the annular protrusion 33 and the annular groove 14 cooperate to make the sleeve body 1 and the flip cover 3 tightly connected.

[0030] The two reinforcing ribs 13 symmetrically arranged on the sleeve body 1 can enhance the tensile strength of the sleeve.

[0031] like Figure 1 and Figure 2 As shown, a mark 15 is provided on the top surface of the sleeve body 1, corresponding to the opening direction of the flip cover 3 below.

[0032] The cylindrical boss 22 and the cylindrical surface of the through hole 32 cooperate with the drafting angle to ensure that the two will not fall off easily after being inserted. The state when inserted is the normal service state, and the turning piece 2 can prevent mud from splashing into the inside of the sleeve.

[0033] When it is necessary to remove debris from the bottom of the sleeve, use a thin rod to probe down from the upper opening of the sleeve along the marked position on the top end face of the sleeve, and press the flip plate 2 with a slight force to flip the flip plate 2 90 degrees. After cleaning the debris at the bottom of the sleeve, use the thin rod to push the flip plate 2 in the opposite direction of the marked position to rotate it in the opposite direction. The cylindrical boss 22 is inserted into the through hole 32 to complete the reset.

Claims

1. A pre-buried casing for railway sleepers, characterized in that: It comprises a sleeve body and a flip device arranged at the bottom of the sleeve body, wherein the flip device comprises a flip cover and a flip sheet arranged in the flip cover; the flip sheet is installed at the bottom of the flip cover through two symmetrically arranged rotating pins and two symmetrically arranged mounting pin holes on the flip cover.

2. The embedded casing for railway sleepers according to claim 1, characterized in that: A guide rail groove is arranged on the mounting pin hole.

3. The embedded casing for railway sleepers according to claim 1, characterized in that: An opening and a supporting plane are arranged at the bottom of the flip cover.

4. The embedded casing for railway sleepers according to claim 3 is characterized in that: A mark is set on the top surface of the sleeve body, corresponding to the opening direction of the lower flip cover.

5. The embedded casing for railway sleepers according to claim 3 is characterized in that: A cylindrical boss is arranged on the flip sheet, and the cylindrical boss is inserted into a through hole arranged at a corresponding position of the supporting plane.

6. The embedded casing for railway sleepers according to claim 5, characterized in that: The cylindrical boss and the cylindrical surface of the through hole are drafted together at a certain angle to ensure that the cylindrical boss will not fall off easily after being inserted into the through hole.

7. The embedded casing for railway sleepers according to claim 1, characterized in that: An annular groove is arranged at the bottom end of the sleeve body, and an annular protrusion is arranged on the side wall of the flip cover. The sleeve body and the flip cover are tightly connected through the cooperation of the annular protrusion and the annular groove.

8. The embedded casing for railway sleepers according to claim 1, characterized in that: Two reinforcing ribs are symmetrically arranged on the outer wall of the sleeve body.

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