Steel rail connecting line for track circuit

Abstract

The utility model belongs to the technical field of rail equipment, and particularly relates to a steel rail connecting line for a track circuit, which comprises two leads, plug pins and two groups of lead pressing rods, two side end parts of the two leads are respectively fixed on the plug pins, the two groups of lead pressing rods are symmetrically arranged along the centers of the leads, one ends of the lead pressing rods are fixed on the plug pins, and the other ends of the lead pressing rods are fixed on the plug pins. The other end of the wire pressing rod is pressed on two wires in a sliding mode through an upper pressing plate connected with the wire pressing rod, the wires comprise a concave section wire, a linear section wire and an arc-shaped section wire, an oblique line section of the concave section wire comprises a first wire and a second wire, and the first wire and the second wire are different in section shape and are connected through a transition section. According to the utility model, two integrated structures with different sections connected are adopted, the middle part adopts the concave structure, and the wire pressing rod is additionally arranged at the concave structure section, so that the problems of arching of the steel rail connecting line and breakage of the welding end of the steel rail connecting line are solved.

Description

Technical Field

[0001] This utility model belongs to the technical field of railway equipment, specifically relating to a rail splice line for track circuits. Background Technology

[0002] Track circuits are the basic equipment for automatic railway signal control. They can automatically detect the running position of trains and vehicles, control the display of signals, and transmit ground signals to locomotives to control train operation.

[0003] A track circuit is a circuit consisting of two steel rails of a railway line as conductors, with mechanical insulation or electrical separation at both ends, and connected to power transmission and receiving equipment. A schematic diagram of a track circuit is shown below. Figure 1 As shown.

[0004] The rail splice is an important structure connecting the track circuit. Existing rail splices consist of two conductors, each with a straight section in the middle and curved sections at both ends. The bottom of the curved sections is welded to a stopper. The specific structure is as follows: Figure 2 As shown, the existing rail splice line has a diameter of 5mm, and the existing rail splice line has the following problems:

[0005] 1. Due to train rolling, track maintenance personnel's deliberate misalignment of rails, or weather changes, the rail joint gaps of the rail joints change, causing the middle of the rail joints to bulge. Electrical engineers need to straighten the bulging joints. If they are not dealt with in time, they are often crushed and broken by train wheels, resulting in a large workload for electrical engineers in inspection and maintenance.

[0006] 2. Rail movement caused by train running over the rails or manual rail alignment can result in high tension on the rail joints at curved sections. Under the vibration generated by passing trains, the weld at the connection between the plug and the rail joint may break, causing track circuit failure.

[0007] Therefore, the quality of the connecting line directly affects the transportation safety of trains and the efficiency of railways. Utility Model Content

[0008] To address the shortcomings of existing technologies, this utility model proposes a rail splice line for track circuits. This rail splice line adopts an integrated structure connecting two different cross-sections, and the middle part adopts a concave structure. At the same time, a conductor pressure rod is added to the concave structure section to solve the problems of rail splice line arching and rail splice line weld end breakage.

[0009] A rail splice for a track circuit includes two conductors, plugs, and conductor clamps. The two ends of the two conductors are fixed to the plugs respectively. Two sets of conductor clamps are symmetrically arranged along the center of the conductors. One end of the conductor clamp is fixed to the plug, and the other end of the conductor clamp is slidably pressed onto the two conductors by an upper pressure plate connected to it.

[0010] The conductor includes a concave section conductor, a straight section conductor, and an arc section conductor. The concave section conductor, the straight section conductor, and the arc section conductor are an integral structure and made of the same material. The concave section conductor is located at the center. Straight section conductors are provided at both ends of the concave section conductor. Arc section conductors are provided at the other ends of the two straight section conductors. The bottom end of the arc section conductor is fixed to the plug.

[0011] The concave section of the conductor includes a first conductor and a second conductor. The concave section of the conductor is an integral structure. The first conductor and the second conductor have different cross-sectional shapes and are connected by a transition section. The first conductor is connected to the straight section of the conductor and has the same cross-sectional shape as the straight section of the conductor and the arc section of the conductor. The second conductor is connected to the straight section of the concave section of the conductor, and the two have the same cross-sectional shape.

[0012] The cross-sectional area of ​​the first conductor is the same as that of the second conductor, but the height of the cross-section of the first conductor is less than that of the cross-section of the second conductor.

[0013] The upper pressure plate on the conductor pressure rod slides and presses against the straight section of the concave conductor.

[0014] The conductor pressure rod is also provided with a lower support plate, which is set at the bottom of the straight section of the concave conductor, and the lower support plate is spaced apart from the upper pressure plate.

[0015] The conductor rod can also be fixed to the plug pin by a rod fixing post. The rod fixing post includes a connecting block and a connecting plate. One end of the connecting block is fixedly connected to the plug pin, and the other end is fixedly connected to the connecting plate. A through rectangular groove is opened in the middle of the connecting plate. The end of the conductor rod extends into the rectangular groove. The conductor rod is threaded. The conductor rods at both ends of the rectangular groove are fastened with bolts.

[0016] The beneficial effects of this utility model are as follows:

[0017] 1. This utility model symmetrically sets two sets of conductor pressure bars on the conductor, giving the conductor a downward force and preventing the conductor from arching. At the same time, combined with the setting of the concave section of the conductor, the effect of preventing the conductor from arching is even better.

[0018] 2. The concave section of the conductor of this utility model has different cross-sectional shapes but the same cross-sectional area. At the same time, the cross-sectional shape of the first conductor is the same as that of the straight section and the arc section; the cross-sectional shape of the second conductor is the same as that of the straight section of the concave section. This makes the deformation resistance of the conductor in the middle greater than that of the straight section and the arc section. As a result, when the rails are connected, the arc section and the straight section connected to it deform due to their low stiffness, thereby reducing the stress at the weld between the conductor and the plug and solving the problem of weld breakage. At the same time, the deformation of the straight section connected to the arc section further suppresses the arching deformation of the concave section.

[0019] 3. This utility model improves the safety of track circuits and the smoothness of transportation, extends the replacement cycle of rail splices, reduces railway maintenance costs, and alleviates the labor intensity of electrical personnel. Attached Figure Description

[0020] Figure 1 Schematic diagram of the track circuit of this utility model;

[0021] Figure 2 This utility model presents a structural schematic diagram of an existing rail splicing line;

[0022] Figure 3 A schematic diagram of the structure of the rail splicing line in Embodiment 1 of this utility model;

[0023] Figure 4 A schematic diagram of the structure of the rail splicing line in Embodiment 2 of this utility model;

[0024] Figure 5 A front view of the rail splice line in Embodiment 2 of this utility model;

[0025] Figure 6 A schematic diagram of the structure of the compression rod fixing pile in Embodiment 2 of this utility model;

[0026] In the attached diagram: 1. Plug; 2. Conductor pressure rod; 201. Upper pressure plate; 202. Lower support plate; 3. Pressure rod fixing stake; 301. Connecting block; 302. Connecting plate; 3021. Rectangular groove; 4. Arc-shaped conductor segment; 5. Straight conductor segment; 6. Concave conductor segment; 601. Straight segment; 602. Oblique segment; 6021. First conductor; 6022. Second conductor. Detailed Implementation

[0027] The present invention will now be described in detail with reference to the accompanying drawings.

[0028] Example 1

[0029] like Figures 3-6As shown, a rail splice for a track circuit includes two wires, a plug 1, and a wire pressure rod 2. The two ends of the two wires are respectively fixed on the plug 1. Two sets of wire pressure rods 2 are symmetrically arranged along the center of the wires. One end of the wire pressure rod 2 is fixed on the plug 1, and the other end of the wire pressure rod 2 is slidably pressed onto the two wires by an upper pressure plate 201 connected to it.

[0030] In this embodiment, the wire clamping rod 2 has an L-shaped structure. The short side of the wire clamping rod 2 is fixed to the plug, and the long side of the wire clamping rod 2 is slidably pressed onto the two wires by the upper clamping plate 201 connected to it. The upper clamping plate 201 of the wire clamping rod 2 acts at least 1 / 3 of the wire. The cross-section of the wire clamping rod 2 is circular with a diameter of 10mm to 14mm.

[0031] When the rail moves and causes the plug 1 to move, the upper pressure plate 201 of the conductor pressure rod 2, which is fixedly connected to the plug 1, slides on the conductor, and the upper pressure plate 201 acts on the conductor to prevent the conductor from arching.

[0032] The conductor includes a concave section conductor 6, a straight section conductor 5, and an arc section conductor 4. The concave section conductor 6, the straight section conductor 5, and the arc section conductor 4 are an integral structure and made of the same material, namely galvanized iron wire. The concave section conductor 6 is located at the center. Straight section conductors 5 are provided at both ends of the concave section conductor 6. Arc section conductors 4 are provided at the other ends of the two straight section conductors 5. The bottom end of the arc section conductor 4 is fixed on the plug 1.

[0033] The oblique segment 602 of the concave section conductor 6 includes a first conductor 6021 and a second conductor 6022. The oblique segment 602 of the concave section conductor 6 is an integral structure. The first conductor 6021 and the second conductor 6022 have different cross-sectional shapes and are connected by a transition section conductor. The transition section conductor can be formed by cold pressing or hot pressing with a special mold. The first conductor 6021 is connected to the straight section conductor 5, and the first conductor 6021 has the same cross-sectional shape as the straight section conductor 5 and the arc section conductor 4. The second conductor 6022 is connected to the straight section 601 of the concave section conductor 6, and the two have the same cross-sectional shape.

[0034] The cross-sectional area of ​​the first conductor 6021 is the same as that of the second conductor 6022, and the height of the cross-section of the first conductor 6021 is less than the height of the cross-section of the second conductor 6022.

[0035] In this embodiment, the first conductor 6021 has a rectangular cross-sectional shape, the second conductor 6022 has a circular cross-sectional shape, and the transition section conductor transitions from the rectangular cross-section first conductor 6021 to the circular cross-section second conductor 6022. The transition section conductor can be formed by cold pressing or hot pressing the circular cross-section second conductor 6022 using a special mold. The oblique segment 602 of the concave section conductor 6 is an integral structure. The rectangular cross-section first conductor 6021 connects to the straight section conductor 5, and the circular cross-section second conductor 6022 connects to the straight segment 601 of the concave section conductor 6. The cross-sectional shape of the rectangular cross-section first conductor 6021 is the same as that of the straight section conductor 5 and the arc section conductor 4. The cross-sectional shape of the circular cross-section second conductor 6022 is the same as that of the straight segment conductor 601 of the concave section conductor 6. The cross-sectional area of ​​the circular cross-section second conductor 6022 is the same as that of the rectangular cross-section first conductor 6021, and the height of the rectangular cross-section first conductor 6021 is smaller than the diameter of the circular cross-section second conductor 6022.

[0036] The cross-sectional shape of the first conductor 6021 can also be semi-circular or elliptical.

[0037] By setting the concave section conductor 6, the arching of the conductor can be prevented. At the same time, through the transition connection of conductors with different cross-sectional shapes, the stiffness of the arc-shaped section conductor 4 and the straight section conductor 5 at both ends is less than that of the middle concave section conductor 6, making it relatively softer and easier to deform. When the rail moves, the straight section 601 of the concave section conductor 6 is not easily deformed, while the arc-shaped section conductor 4 and the straight section conductor 5 deform. This setting improves the arching of the straight section 601 of the concave section conductor 6, transforming the arching of the concave section conductor 6 into a slight arching of the straight section conductor 5. On the other hand, it improves the stress at the connection between the arc-shaped section conductor 4 and the plug 1, reducing the risk of weld failure at the weld between the plug 1 and the conductor.

[0038] In this embodiment, to meet the technical specification requirement that the resistance of the rail gap should not exceed 3mΩ, the total length of the conductor is set to 1500mm. The lengths of the two arc-shaped conductor segments 4 are 200mm each, the lengths of the two straight conductor segments 5 are 150mm each, and the lengths of the two first conductors 6021 are 6mm each. The cross-sectional dimensions of the first conductor 6021, the arc-shaped conductor segments 4, and the straight conductor segments 5 are all 2mm wide and 14.13mm long. The lengths of the two second conductors 6022 are 2mm each, the lengths of the two transition conductor segments are 2mm, the length of the straight section 601 of the concave conductor segment 6 is 780mm, and the diameters of the second conductors 6022 and the straight section 601 of the concave conductor segment 6 are both 6mm.

[0039] The upper pressure plate 201 of the conductor pressure rod 2 slides and presses against the top of the straight section 601 of the concave section of the conductor 6. The end of the upper pressure plate 201 not connected to the conductor pressure rod 2 is provided with a lower pressure edge, the height of which is consistent with the diameter of the straight section 601 of the concave section of the conductor 6. The conductor pressure rod 2 is also provided with a lower support plate 202, which is located at the bottom of the straight section 601 of the concave section of the conductor 6. The end of the lower support plate 202 not connected to the conductor pressure rod 2 is provided with an upper support edge, the height of which is consistent with the diameter of the straight section 601 of the concave section of the conductor 6. The lower support plate 202 and the upper pressure plate 201 are spaced apart. The lower support plate 202 is preferably located at the top of the conductor pressure rod 2. The lower support plate 202 provides support for the concave section of the conductor 6, and the lower support edge assists in supporting the conductor. The upper pressure plate 201 applies downward pressure to the concave section of the conductor 6, and the lower pressure edge assists in pressing the conductor to prevent the conductor from arching.

[0040] Example 2

[0041] The conductor rod 2 is fixed to the plug 1 by the rod fixing post 3. The rod fixing post 3 includes a connecting block 301 and a connecting plate 302. One end of the connecting block 301 is fixedly connected to the plug 1, and the other end is fixedly connected to the connecting plate 302. A through rectangular groove 3021 is opened in the middle of the connecting plate 302. The end of the conductor rod 2 extends into the rectangular groove 3021. The conductor rod 2 is threaded. The conductor rods 2 at both ends of the rectangular groove 3021 are fastened with bolts.

[0042] In this embodiment, the connecting block 301 provided on the pressure rod fixing pile 3 can prevent the plug 1 from damaging the connecting plate 302 during the process of driving into the rail, and also prevent the connecting plate 302 from affecting the vertical entry of the plug 1 into the rail.

[0043] In this embodiment, the short side of the conductor pressure rod 2 extends into the rectangular groove 3021. The short side of the conductor pressure rod 2 is threaded, and the conductor pressure rods 2 at both ends of the rectangular groove 3021 are fastened with bolts. Since the length and angle of the plug 1 driven into the rail vary depending on the technical skills of the on-site personnel, the rectangular groove 3021 on the pressure rod fixing pile 3 allows the on-site maintenance personnel to freely adjust the position and angle of the conductor pressure rod 2 and the plug 1, ensuring that the conductor pressure rod 2 can pass smoothly through the rectangular groove 3021, and preventing the conductor pressure rod 2 from failing to function due to different operating methods of the technicians.

[0044] In this embodiment, the size of the connecting block can be determined according to the size of the hammer used to operate the plug on site, ensuring that the connecting plate does not affect the use of the hammer; the connecting plate 302 is 50mm long and 10mm high, and the rectangular groove 3021 is asymmetrically arranged along the length direction. The reserved thicknesses on both sides of the rectangular groove 3021 in the length direction are 10mm and 2mm respectively. The end of the connecting plate 302 with a reserved thickness of 10mm faces the rail side and is fixed to the plug 1 by the connecting block 301; the end of the connecting plate 302 with a reserved thickness of 2mm is away from the rail side; the rectangular groove 3021 is symmetrically arranged in the width direction, and the reserved thicknesses on both sides of the rectangular groove 3021 in the width direction are 4mm.

[0045] In this embodiment, when the rail splice is in use, according to the design requirements, two plugs 1 are fixed to the rail. Then, one end of the conductor pressure rod 2 is passed through the rectangular groove 3021 of the pressure rod fixing pile 3, and the conductor pressure rods 2 at both ends of the rectangular groove 3021 are fixed with bolts. Then, the conductor is placed between the upper pressure plate 201 and the lower support plate 202 of the conductor pressure rod 2, so that the upper pressure plate 201 presses against the two conductors, and the lower support plate 202 supports the bottom of the two conductors, thereby completing the installation of the entire conductor. When the rail moves and drives the plugs 1 to move, the upper pressure plate 201 and the lower support plate 202 of the conductor pressure rod 2, which are fixedly connected to the plugs 1, slide on the conductor. At the same time, combined with the concave section conductor 6, and the variable cross-section setting of the inclined section 602 of the concave section conductor 6, the conductor is prevented from arching. The variable cross-section design on the inclined section 602 of the concave section conductor 6 also further avoids the weld opening at the connection between the conductor and the plug 1.

Claims

1. A rail splice wire for track circuits, characterized in that, It includes two wires, plugs, and wire clamps. The two ends of the two wires are fixed to the plugs respectively. Two sets of wire clamps are symmetrically arranged along the center of the wires. One end of the wire clamp is fixed to the plug, and the other end of the wire clamp is slidably pressed onto the two wires by the upper clamp plate connected to it.

2. The rail splice wire for track circuits according to claim 1, characterized in that, The conductor includes a concave section conductor, a straight section conductor, and an arc section conductor. The concave section conductor, the straight section conductor, and the arc section conductor are an integral structure and made of the same material. The concave section conductor is located at the center. Straight section conductors are provided at both ends of the concave section conductor. Arc section conductors are provided at the other ends of the two straight section conductors. The bottom end of the arc section conductor is fixed to the plug.

3. A rail splice wire for track circuits according to claim 2, characterized in that, The concave section of the conductor includes a first conductor and a second conductor. The concave section of the conductor is an integral structure. The first conductor and the second conductor have different cross-sectional shapes and are connected by a transition section. The first conductor is connected to the straight section conductor, and the first conductor has the same cross-sectional shape as the straight section conductor and the arc section conductor. The second conductor is connected to the straight section of the concave conductor, and the two have the same cross-sectional shape; The cross-sectional area of ​​the first conductor is the same as that of the second conductor, but the height of the cross-section of the first conductor is less than that of the cross-section of the second conductor.

4. A rail splice wire for track circuits according to claim 3, characterized in that, The upper pressure plate on the conductor pressure rod slides and presses against the straight section of the concave conductor.

5. A rail splice wire for track circuits according to claim 3, characterized in that, The conductor pressure rod is also provided with a lower support plate, which is set at the bottom of the straight section of the concave conductor, and the lower support plate is spaced apart from the upper pressure plate.

6. A rail splice wire for track circuits according to claim 1, characterized in that, The conductor rod can also be fixed to the plug pin by a rod fixing post. The rod fixing post includes a connecting block and a connecting plate. One end of the connecting block is fixedly connected to the plug pin, and the other end is fixedly connected to the connecting plate. A through rectangular groove is opened in the middle of the connecting plate. The end of the conductor rod extends into the rectangular groove. The conductor rod is threaded. The conductor rods at both ends of the rectangular groove are fastened with bolts.

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