Connecting structure for preventing fatigue fracture of concrete sleeper bolt based on railway

Abstract

The utility model relates to a connecting structure for preventing fatigue fracture of a concrete sleeper bolt based on a railway, and belongs to the technical field of railway transportation equipment. According to the technical scheme, the connecting structure for preventing fatigue fracture of the concrete sleeper bolt based on the railway is characterized by comprising a railway concrete sleeper (1), the concrete sleeper bolt (2), a fastening nut (3), a positioning cushion block (4) and a rail positioning block (5), the railway concrete sleeper (1) is laid in gravel of a railway base layer, and the concrete sleeper bolt (2) is installed in the railway concrete sleeper (1) in an embedded mode; the rail positioning block (5) is fixed on the railway concrete sleeper (1) through the concrete sleeper bolt (2) and the fastening nut (3), the positioning cushion block (4) is fixed on the rail positioning block (5), and the positioning cushion block (4) is located between the fastening nut (3) and the rail positioning block (5). The concrete sleeper bolt has the advantages that the phenomenon that the concrete sleeper bolt is broken due to the fact that the fastening nut of the concrete sleeper bolt is loosened due to vibration can be avoided, and potential safety hazards are eliminated.

Description

TECHNICAL FIELD

[0001] The utility model relates to a kind of connecting structure for preventing concrete sleeper bolt fatigue break based on railway, belong to railway transport equipment technical field. BACKGROUND

[0002] The concrete sleeper used on railway is also called concrete sleeper, and the function of concrete sleeper is to fix the track gauge of railway track, bear the weight load of steel rail and passing vehicle, make track pressure load evenly dispersed to subgrade, keep line stable and unobstructed, and track sleeper bears various forces from steel rail, and elastically distributes the force to ballast, while effectively maintaining the gauge, direction and position of track.

[0003] In the patent with application number CN201210467428.8, a railway overhead fixing device and a method for building railway bridge and culvert by using the device are disclosed, the fixing device includes longitudinal beams and sleeper beams, the sleeper beams pass through the track and are parallel to the concrete sleepers, the top of the two ends of the sleeper beams is respectively fixedly connected with a longitudinal beam perpendicular to the sleeper beam, and the longitudinal beam is fixedly connected with a support beam body through a support point pile. The railway overhead fixing device and the method for building railway bridge and culvert by using the device solve the problems that the fixing effect of the traditional construction method for building railway bridge and culvert cannot meet the speed requirement of existing railway and the small overhead span cannot meet the large-span bridge and culvert crossing.

[0004] The rail will vibrate due to force when the vehicle passes, so that the nut of concrete sleeper bolt is loose due to vibration, which leads to poor cooperation and fastening effect of concrete sleeper bolt and fastening nut, and in severe cases, the fastening nut may be detached from the concrete sleeper bolt, which has high safety hazard. After the fastening nut is loose, the gap between the concrete sleeper bolt and the fixing part increases, and the concrete sleeper bolt is easily broken due to vibration of the rail, which has poor stability and low practicability. UTILITY MODEL CONTENTS

[0005] The utility model aims to provide a kind of connecting structure for preventing concrete sleeper bolt fatigue break based on railway, which can avoid the fastening nut of concrete sleeper bolt from being loose due to vibration, lead to the breakage of concrete sleeper bolt, eliminate safety hazard and solve the problems in the background art.

[0006] The technical scheme of the utility model is as follows:

[0007] A kind of connecting structure for preventing concrete sleeper bolt fatigue break based on railway, which includes railway concrete sleeper, concrete sleeper bolt, fastening nut, positioning pad and rail positioning block, the railway concrete sleeper is laid in the gravel inside railway base layer, and the concrete sleeper bolt is pre-buried and installed in the railway concrete sleeper;The rail positioning block is fixed on the railway concrete sleeper by the concrete sleeper bolt and the fastening nut, the positioning pad is fixed on the rail positioning block, and the positioning pad is located between the fastening nut and the rail positioning block.

[0008] The bottom of the fastening nut is circular, and the top of the positioning cushion block is provided with a protection convex ring matched with the bottom of the fastening nut.

[0009] The bottom of the fastening nut is circular, and the top of the positioning cushion block is provided with a protection convex ring matched with the bottom of the fastening nut.

[0010] The bottom of the fastening nut is circular, and the top of the positioning cushion block is provided with a protection convex ring matched with the bottom of the fastening nut.

[0011] The bottom of the fastening nut is circular, and the top of the positioning cushion block is provided with a protection convex ring matched with the bottom of the fastening nut.

[0012] The bottom of the fastening nut is circular, and the top of the positioning cushion block is provided with a protection convex ring matched with the bottom of the fastening nut.

[0013] The bottom of the fastening nut is circular, and the top of the positioning cushion block is provided with a protection convex ring matched with the bottom of the fastening nut.

[0014] The bottom of the fastening nut is circular, and the top of the positioning cushion block is provided with a protection convex ring matched with the bottom of the fastening nut.

[0015] The bottom of the fastening nut is circular, and the top of the positioning cushion block is provided with a protection convex ring matched with the bottom of the fastening nut.

[0016] The bottom of the fastening nut is circular, and the top of the positioning cushion block is provided with a protection convex ring matched with the bottom of the fastening nut. BRIEF DESCRIPTION OF DRAWINGS

[0017] Figure 1 It is a structural schematic diagram of the utility model;

[0018] Figure 2 It is a structural schematic diagram of the utility model;

[0019] Figure 3 It is a structural schematic diagram of the utility model;

[0020] Figure 4 It is a structural schematic diagram of the utility model; It is a structural schematic diagram of the utility model;

[0021] Figure 5 Figure is a structure diagram of the fastening nut after disassembly of the utility model;

[0022] Figure 6 Figure is a structure diagram of the bottom part of the utility model; Figure 5

[0023] Figure 7 Figure is a structure diagram of the enlarged A part in the utility model; Figure 2

[0024] In the figure: 1, railway concrete sleeper; 2, concrete sleeper bolt; 3, fastening nut; 4, positioning pad; 5, rail positioning block;

[0025] 201, anti-slip column; 301, anti-dropping rack; 302, unlocking groove; 3021, unlocking ring; 3022, linkage column; 3023, reset top spring; 401, anti-dropping block; 402, protection convex ring; 4011, fixed top spring. DETAILED DESCRIPTION

[0026] The utility model will be further described by examples in combination with the drawings.

[0027] Referring to the drawings Figures 1-7 A connection structure based on fatigue fracture of concrete sleeper bolt for railway, including railway concrete sleeper 1, concrete sleeper bolt 2, fastening nut 3, positioning pad 4 and rail positioning block 5, railway concrete sleeper 1 is laid in the broken stone inside railway base layer, concrete sleeper bolt 2 is pre-buried and installed in railway concrete sleeper 1 inside, rail positioning block 5 is fixed on railway concrete sleeper 1 through concrete sleeper bolt 2 and fastening nut 3, positioning pad 4 is fixed on rail positioning block 5, and positioning pad 4 is located between fastening nut 3 and rail positioning block 5.

[0028] In the embodiment, referring to the drawings Figures 1-7 The bottom of concrete sleeper bolt 2 is provided with a fixed plate, the shape of the fixed plate is square, the periphery of the fixed plate is provided with anti-slip column 201, anti-slip column 201 can effectively prevent the phenomenon of fastening nut 3 loosening caused by self-rotation of concrete sleeper bolt 2, and the stability of the device is improved.

[0029] Fastening nut 3 is screwed on the rod body outside of concrete sleeper bolt 2, the bottom of fastening nut 3 is circular, the bottom of fastening nut 3 is provided with anti-dropping rack 301, the gear teeth of anti-dropping rack 301 are right-angled triangle, and the direction of the right-angled side of the gear teeth of anti-dropping rack 301 is the same as the tightening direction of fastening nut 3.

[0030] ​​The top of the positioning cushion block 4 is provided with a protection protruding ring 402, the bottom of the fastening nut 3 is inserted into the inside of the protection protruding ring 402, the protection protruding ring 402 can protect the internal components of the fastening nut 3 and the positioning cushion block 4 from being damaged by external force, is durable, and improves the stability and durability of the overall structure;

[0031] The inside of the protection protruding ring 402 at the top of the positioning cushion block 4 is provided with four anti-disengagement blocks 401, the top of each anti-disengagement block 401 is provided with a right-angled triangular-shaped tooth, and the direction of the right-angled side of the tooth is the same as that of the direction of the tooth of the anti-disengagement rack 301. When the fastening nut 3 is tightened in the forward direction, the tooth at the top of the anti-disengagement block 401 does not hinder the tightening of the fastening nut 3 in the forward direction; when the fastening nut 3 is loosened in the reverse direction, the tooth at the top of the anti-disengagement block 401 is engaged with the tooth of the anti-disengagement rack 301.

[0032] The positioning cushion block 4 is welded at the top of the rail positioning block 5, so that the positioning cushion block 4 cannot rotate, and thus the fastening nut 3 cannot be reversed, which prevents the fastening nut 3 from being loosened and coming out of the rod body of the concrete sleeper bolt 2 from the source, improves the integrity of the concrete sleeper bolt 2 and the fastening nut 3, and thus the rail and other components can be stably fixed, even after long-term use, the fastening nut 3 will not be loosened or come out of the concrete sleeper bolt 2 due to rail vibration, and the practicability and stability of the overall structure are improved.

[0033] The bottom of the anti-disengagement block 401 is provided with a fixed top spring 4011, the two ends of the fixed top spring 4011 are fixed to the bottom of the anti-disengagement block 401 and the inside of the insertion slot of the fastening nut 3, respectively, and the fixed top spring 4011 can ensure that the anti-disengagement block 401 is stably engaged in the inside of the anti-disengagement rack 301, thereby avoiding the fastening nut 3 from being accidentally loosened and coming out of the concrete sleeper bolt 2, and improving the stability.

[0034] The bottom of the fastening nut 3 is also provided with an unlocking slot 302, the inside of the unlocking slot 302 is inserted with an unlocking ring 3021, the top of the unlocking ring 3021 is provided with eight linkage columns 3022, and the linkage columns 3022 are inserted into the inside of the fastening nut 3, and the unlocking ring 3021 is located directly above the anti-disengagement block 401.

[0035] When the fastening nut 3 needs to be disassembled, the wrench is only needed to be put on the cap body of the fastening nut 3 and pressed down, at this time, the wrench can drive the unlocking ring 3021 to move downward through the linkage columns 3022, the tooth of the anti-disengagement block 401 is driven to be inserted into the inside of the positioning cushion block 4 to be hidden, and when the fastening nut 3 is reversed through the wrench, the fastening nut 3 can be freely rotated, and the disassembly is convenient and flexible.

[0036] The top of the linkage column 3022 is provided with a linkage piece, the bottom of the linkage piece is provided with a reset top spring 3023, and the two ends of the reset top spring 3023 are fixedly connected to the bottom of the linkage piece and the top of the bottom circular ring of the fastening nut 3 respectively. The reset top spring 3023 can ensure that the unlocking ring 3021 is in a raised state when the device is in a reset state, the unlocking ring 3021 will not press the anti-withdrawal block 401 into the inside of the positioning pad block 4, so that the anti-withdrawal block 401 can be stably clamped in the inside of the anti-withdrawal rack 301, the accidental reverse of the fastening nut 3 is avoided, and the stability is further improved.

[0037] The positioning pad block 4 is welded on the top of the rail positioning block 5, then the fastening nut 3 is tightened, the rail positioning block 5 is fixed on the top of the railway concrete sleeper 1, and finally the rail is installed on the top of the rail positioning block 5.

Claims

1. A connecting structure based on the fatigue fracture of a tie bolt for railway, characterized by: The utility model relates to a railway concrete sleeper (1), concrete sleeper bolt (2), fastening nut (3), positioning cushion block (4) and rail positioning block (5), railway concrete sleeper (1) is laid in the broken stone inside railway base layer, concrete sleeper bolt (2) is preburied and installed in the inside railway concrete sleeper (1), rail positioning block (5) is fixed on railway concrete sleeper (1) through concrete sleeper bolt (2) and fastening nut (3), positioning cushion block (4) is fixed on rail positioning block (5), and positioning cushion block (4) is located between fastening nut (3) and rail positioning block (5), the bottom of fastening nut (3) is circular, the top of positioning cushion block (4) is equipped with the protection convex ring (402) with the bottom cooperation of fastening nut (3), and the bottom of fastening nut (3) is inserted in the protection convex ring (402) top of positioning cushion block (4) inside, the bottom circumferential direction of fastening nut (3) is equipped with anti -drop rack (301), and the inside of protection convex ring (402) top of positioning cushion block (4) is equipped with a plurality of anti -drop check block (401), and the top of anti -drop check block (401) is equipped with the check tooth with anti -drop rack (301) matching.

2. The connecting structure based on the fatigue fracture of the concrete sleeper bolt for railway according to claim 1, characterized in that: The anti -drop rack (301) of the bottom circumferential direction of fastening nut (3) and the check tooth of the top of anti -drop check block (401) are all right angle triangles, and the direction of the right angle side of check tooth is same with the direction of the right angle side of anti -drop rack (301).

3. The connecting structure based on the fatigue fracture of the concrete sleeper bolt for railway according to claim 2, characterized in that: The anti -drop check block (401) in protection convex ring (402) is four even arrangement in circumferential direction.

4. The connecting structure based on the fatigue fracture of the concrete sleeper bolt for railway according to claim 2, characterized in that: The bottom of anti -drop check block (401) is equipped with fixed top spring (4011), and fastening nut (3) is equipped with the slot with fixed top spring (4011) cooperation.

5. The connecting structure based on the fatigue fracture of the concrete sleeper bolt for railway according to claim 2, characterized in that: The bottom of fastening nut (3) is further equipped with the unlocking slot (302), and the inside insertion of unlocking slot (302) has the unlocking ring (3021), and the unlocking ring (3021) is located the directly above of anti -drop check block (401), and the top of unlocking ring (3021) is equipped with a plurality of linkage column (3022), and linkage column (3022) is inserted in the inside fastening nut (3).

6. The connecting structure based on the fatigue fracture of the concrete sleeper bolt for railway according to claim 5, characterized in that: The top of linkage column (3022) is equipped with linkage piece, and the below of linkage piece is equipped with reset top spring (3023).

7. The connecting structure based on the fatigue fracture of the concrete sleeper bolt for railway according to claim 1, characterized in that: The bottom of concrete sleeper bolt (2) is equipped with fixed plate, and the periphery of fixed plate is equipped with anti -slip column (201).

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