A heating mechanism for snow melting locking frame of railway turnout

Abstract

The present invention relates to a railway turnout snow melting locking frame heating mechanism, which is characterized by comprising an electric heating element (1), an aluminum alloy heat conductive pad (2), an elastic clamp (3), an elastic pressing sheet (4), an aluminum alloy triangular filling block (5), a railway turnout (9), and a locking frame (10); the locking frame (10) is connected to the railway turnout (9) through bolts and nuts, the locking frame (10) has an extension platform at the lower end of the bolts and nuts, the elastic clamp (3) is clamped on both sides of the extension platform, the elastic clamp (3) is clamped with the elastic pressing sheet (4) and the aluminum alloy heat conductive pad (2) at the same time, one end of the elastic pressing sheet (4) is fixed in the bolts and nuts connecting the locking frame (10) and the railway turnout (9), and the L-shaped 180W electric heating element (1) is connected through the elastic pressing sheet (4). The railway turnout snow melting locking frame heating mechanism has high heating efficiency, good safety, and is easy to use and install.

Description

Technical Field

[0001] The invention is suitable for heating the locking frame of various types of external locking devices of all domestic turnouts, and particularly relates to a heating mechanism for the snow-melting locking frame of a railway turnout. Background Art

[0002] In cold regions of northern my country, particularly the Northeast, heavy snow blankets the outer locking devices of turnouts during the winter, freezing components such as the locking frame and locking rod, the locking iron and locking hook, and the locking frame and locking hook together. This prevents the outer locking devices from functioning properly and prevents flexible turnout switching, leaving trains in an unsafe state. This can lead to common accidents such as train misses and delays, a problem particularly acute on high-speed railways. Currently, the main method for melting snow at turnout outer locking devices in China is to install a heating plate under the locking frame. However, since the heat is transferred via thermal radiation, the thermal efficiency is low and the effect is minimal. Especially in strong winds, a large amount of heat is lost to the air, making it virtually ineffective for snow removal. Consequently, manual snow and ice removal at the outer locking devices can only be performed on-site using heating tools such as blowtorches and heat guns. This is labor-intensive, cumbersome, and unsafe, and has even resulted in tragic casualties caused by snow removal. Therefore, there is an urgent need for a snow and ice removal device with high heating efficiency that effectively heats the outer locking devices. Summary of the Invention

[0003] The purpose of the present invention is to provide a railway turnout snow melting locking frame heating mechanism which has high heating efficiency, good safety and is easy to use and install.

[0004] The objective of the present invention is achieved by providing a railway turnout snow-melting locking frame heating mechanism, which is characterized by comprising an electric heating element, an aluminum alloy thermal pad, an elastic clamp, an elastic pressure piece, an aluminum alloy triangular filling block, a railway turnout, and a locking frame; the locking frame is connected to the railway turnout through bolts and nuts, and the locking frame has an extension platform at the lower end of the bolts and nuts, and the elastic clamp is clamped on both sides of the extension platform. The elastic clamp simultaneously clamps the elastic pressure piece and the aluminum alloy thermal pad, and one end of the elastic pressure piece is fixed in the bolt and nut connecting the locking frame and the railway turnout, and the L-shaped 180W electric heating element is connected through the elastic pressure piece.

[0005] The electric heating element is an L-shaped 180W resistance heater, which is fixed to the epitaxial platform by a fastener group, which includes screws, nuts and elastic sheets.

[0006] The aluminum alloy heat-conducting pad is a long strip structure, which connects the railway switch and the locking frame and is used to conduct the heating temperature of the electric heating element to the railway switch.

[0007] The elastic clamp is a "U-shaped" closing structure with an elastic metal clamping edge on the outside of the "U-shaped" closing structure. The "U-shaped" closing structure is used to clamp the locking frame, and the elastic metal clamping edge is used to clamp the electric heating element.

[0008] The elastic pressing piece is punched into an L-shape by a 1.2mm thick metal strip. A connecting hole is provided on one side of the L-shape. The fastener assembly passes through the connecting hole and is connected to the railway switch through the locking frame.

[0009] The aluminum alloy triangular filling block is an aluminum alloy part.

[0010] The locking frame is composed of three sections, the first and third sections are transitioned through the second section, and the three sections are an integrated structure. The first and third sections are parallel, and the second section is perpendicular to the first and third sections. There is an elliptical connecting hole in the middle of the first section, and the elliptical connecting hole is used to connect the railway turnout through bolts and nuts. There are triangular cut corners at both ends of the second section. The triangular cut corners are the same shape as the aluminum alloy triangular filling blocks, and the aluminum alloy triangular filling blocks are installed at the cut corners of the locking frame.

[0011] The installation process of the present invention is as follows: first, assemble the remaining parts except the aluminum alloy thermal pad according to Figure 1 below, then expand the elastic clamp and insert it into the locking frame. At this time, the heating device relies on its own elastic force to tightly fasten the locking frame. Finally, loosen the bolts fixing the locking frame, insert the elastic pressing piece and tighten the bolts. The elastic pressing piece plays a double fastening role. When the electric heating element is energized, the heat will heat the locking frame through the aluminum alloy thermal pad and the L-shaped 180W electric heating element.

[0012] The advantages of the present invention are: high heating efficiency. Unlike traditional indirect heating with heating plates, this device uses direct heat conduction heating and uses aluminum alloy with excellent thermal conductivity to conduct heat. Therefore, it has high thermal efficiency and significant heating effect, can significantly save electricity, and achieve the goal of energy conservation and emission reduction; it is simple and reliable; the heating mechanism has a simple structure, and is tightly fixed to the locking frame by the elastic force of the elastic clamp itself. At the same time, it adopts mechanical limit and positioning, and the installation location is far away from the moving parts of the external locking device. Therefore, the heating mechanism has no impact on the normal operation of the external locking device and does not affect the track circuit; the unique electric heating element has a flat heating strip structure. Compared with tubular heating elements, flat tubular heating elements have a larger contact surface, increasing the heat transfer area, which is very beneficial for heat conduction; the heating conductor and insulation material are highly compressed and encapsulated in a 0.3mm metal shell, and the wires are connected at one end. The outer layer of the wire is protected by a silicone rubber spiral guard, which is extremely corrosion-resistant and aging-resistant, with a service life of up to 15 years and high versatility. This heating mechanism is applicable to both the point rail and the heart rail of the turnout. During on-site installation, the electric heating element can be reversed according to actual conditions, so there is no distinction between left-mounted and right-mounted switch machines. This greatly facilitates on-site installation and maintenance and complies with the principle of fail-safe. Since the movement characteristics of the external locking device were taken into consideration during the design, the installation position is as far away from the moving parts of the external locking device as possible. Therefore, when the bolts become loose or the elastic clamps break, the heating mechanism will fall off on the track bed under the action of gravity and will not affect the original conversion equipment. It has strong adaptability. This heating mechanism relies on elastic thin-walled sheet metal materials and takes up very little space on the turnout. It is particularly suitable for turnouts with narrow installation spaces such as the No. 12 duplex intersection SC350. It is easy to disassemble and is tightly fixed to the locking frame using the elastic force of the elastic clamps themselves. Therefore, disassembly can be easily completed with a flat-blade screwdriver.

[0013] The present invention is applicable to heating the locking frames of various types of external locking devices of all domestic turnouts. By utilizing the locking frame fixing bolts and the elastic force thereof to reliably fix the locking frame, the present invention can be conveniently and quickly installed and disassembled without changing the structure of the existing locking frame, thereby achieving rapid heating of the locking frame, thereby ensuring the turnout parameters (opening distance and locking amount) and switch gap index requirements, and keeping the various parameter indicators of the turnout and switching equipment in an excellent state, thereby ensuring the normal switching of the turnout and indoor signaling, and maintaining railway driving safety.

[0014] The present invention will be further described below in conjunction with the accompanying drawings of the embodiments. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1A and Figure 1B It is a structural diagram of the second embodiment of the present invention;

[0016] Figure 2 This is a schematic diagram of the L-type 180W resistance heater structure;

[0017] Figure 3 This is a schematic diagram of the structure of the aluminum alloy thermal pad;

[0018] Figure 4 2. It is a schematic diagram of the elastic fixture structure;

[0019] Figure 5 2. It is a schematic diagram of the elastic tablet structure;

[0020] Figure 6 It is a schematic diagram of the triangle filling block structure;

[0021] Figure 7A and Figure 7B Schematic diagram of different sides of the locking frame structure.

[0022] In the figure: 1. Electric heating element; 2. Aluminum alloy thermal pad; 3. Elastic clamp; 4. Elastic pressing piece; 5. Aluminum alloy triangular filling block; 6-8. Fastener assembly; 9. Railway switch; 10. Locking frame. DETAILED DESCRIPTION

[0023] As shown in Figure 1, the present invention relates to a railway turnout snow melting locking frame heating mechanism, which is characterized by: including an L-shaped 180W electric heating element 1, an aluminum alloy thermal pad 2, an elastic clamp 3, an elastic pressure plate 4, an aluminum alloy triangular filling block 5, a fastener group 6~8, a railway turnout 9, and a locking frame 10; the locking frame 10 is connected to the railway turnout 9 through bolts and nuts, and the locking frame 10 has an extension platform at the lower end of the bolt and nut, and the elastic clamp 3 is clamped on both sides of the extension platform. The elastic clamp 3 is simultaneously clamped with the elastic pressure plate 4 and the aluminum alloy thermal pad 2, and one end of the elastic pressure plate 4 is fixed in the bolt and nut connecting the locking frame 10 and the railway turnout 9, and the L-shaped 180W electric heating element 1 is connected through the elastic pressure plate 4. The fastener group 6~8 includes a screw 6, a nut 7 and an elastic plate 8.

[0024] like Figure 2 As shown, the electric heating element 1 is an L-shaped 180W resistance heater.

[0025] like Figure 3 As shown, the aluminum alloy heat conductive pad 2 is a long strip structure, connecting the railway switch 9 and the locking frame 10, and is used to conduct the heating temperature of the electric heating element 1 to the railway switch 9.

[0026] like Figure 4 As shown, the elastic clamp 3 is a "U-shaped" closing structure, and there is an elastic metal clamping edge on the outside of the "U-shaped" closing structure. The "U-shaped" closing structure is used to clamp the locking frame 10, and the elastic metal clamping edge is used to clamp the electric heating element 1.

[0027] like Figure 5As shown, the elastic pressing piece 4 is punched into an L-shape by a 1.2 mm thick metal strip. One side of the L-shape has a connecting hole. The fastener assembly passes through the connecting hole and is connected to the railway switch 9 through the locking frame 10.

[0028] like Figure 6 As shown, the aluminum alloy triangular filling block 5 is an aluminum alloy part.

[0029] As shown in Figure 7, the locking frame 10 is composed of three sections. The first section and the third section are transitioned through the second section. The three sections are an integrated structure. The first section and the third section are parallel, and the second section is perpendicular to the first section and the third section. There is an elliptical connecting hole in the middle of the first section. The elliptical connecting hole is used to connect the railway turnout 9 through bolts and nuts. There are triangular cut corners at both ends of the second section. The triangular cut corners are the same shape as the aluminum alloy triangular filling block 5. The aluminum alloy triangular filling block 5 is installed at the cut corners of the locking frame 10.

[0030] In the present invention, the elastic clamp 3 and the elastic pressing plate 4 are both made of 1.2mm elastic material, ensuring that their hook structure can ensure that the heating mechanism is fixed on the locking frame 10 and will not fall off. The aluminum alloy thermal pad 2 and the aluminum alloy triangular filling block 5 are both made of aluminum alloy material, ensuring fast and efficient heat conduction. The installation process of the present invention is: first, assemble the remaining parts except the aluminum alloy thermal pad 3 according to Figure 1 below, then stretch out the elastic clamp part 3 and put it into the locking frame 10. At this time, the heating mechanism relies on its own elastic force to tightly hold the locking frame 10. Finally, loosen the bolts fixing the locking frame 10, insert the elastic pressing plate 4 and tighten the bolts. The elastic pressing plate 4 plays a double fastening role. After the electric heating element 1 is energized, the heat will pass through the aluminum alloy thermal pad 2 and the L-shaped 180W electric heating element 1 to heat the locking frame 10. The L-shaped electric heating element 1 of the present invention has dimensions and performance parameters. The heating element is 5.5mm thick and adopts a flat structure, which increases the heat transfer area. A 0.3mm thick metal shell is used to highly compress and encapsulate the heating conductor and insulation material. The conductors are connected at one end, and the outer layer of the conductors is protected by a spiral silicone rubber shield, which is highly resistant to corrosion and aging. The elastic clamp 3 is snapped onto the locking frame 10 using its own elastic force. This is simple and reliable, allowing the outer locking frame 10 to be installed without any modification or disassembly, while also ensuring that the normal operation of the outer locking device is not affected. The heating mechanism of the present invention is easy to install and disassemble, and can be installed without any modification to the turnout locking frame 10, which is of great significance for the installation of existing lines. The aluminum alloy thermal pad 2 and the L-shaped 180W electric heating element 1 heat the locking frame 10, thereby achieving the purpose of efficient snow and ice removal.

Claims

1. A railway turnout snow melting locking frame heating mechanism, characterized by: The invention comprises an electric heating element (1), an aluminum alloy heat-conducting pad (2), an elastic clamp (3), an elastic pressing sheet (4), an aluminum alloy triangular filling block (5), a railway turnout (9), and a locking frame (10); the locking frame (10) is connected to the railway turnout (9) by means of bolts and nuts; the locking frame (10) has an extension platform at the lower end of the bolts and nuts; the elastic clamp (3) is clamped on both sides of the extension platform; the elastic clamp (3) is simultaneously clamped with the elastic pressing sheet (4) and the aluminum alloy heat-conducting pad (2); one end of the elastic pressing sheet (4) is fixed in the bolts and nuts connecting the locking frame (10) and the railway turnout (9); the electric heating element (1) is connected to the L-shaped 180W electric heating element (1) by means of the elastic pressing sheet (4); the electric heating element (1) is an L-shaped 180W resistance heater and is fixed on the extension platform by means of a fastener group (6-8); the fastener group (6-8) comprises a screw (6), a nut (7) and an elastic sheet (8); the heating element The thickness is 5.5 mm, and a flat structure is adopted to increase the heat transfer area. At the same time, a 0.3 mm thick metal shell is used to highly compress the heating conductor and the insulating material for packaging, and a wire is output at one end. The outer layer of the output wire is protected by a spiral silicone rubber protection. The aluminum alloy heat conductive pad (2) is a long strip structure, connecting the railway turnout (9) and the locking frame (10), and is used to conduct the heating temperature of the electric heating element (1) to the railway turnout (9). The elastic clamp (3) is a "U-shaped" closing structure, and the outer side of the "U-shaped" closing structure has an elastic metal clamping edge, and the "U-shaped" closing is used to clamp the locking frame (10), and the elastic metal clamping edge is used to clamp the electric heating element (1). The elastic pressing sheet (4) is stamped into an L-shape using a 1.2 mm thick metal strip, and one side of the L-shape has a connecting hole, and the fastener group (6-8) passes through the connecting hole and is connected to the railway turnout (9) through the locking frame (10).

2. A railway turnout snow melting locking frame heating mechanism according to claim 1, characterized in that: The aluminum alloy triangular filling block (5) is an aluminum alloy part.

3. The railway turnout snow melting locking frame heating mechanism according to claim 1 is characterized by: The locking frame (10) is composed of three sections, the first section and the third section are transitioned through the second section, the three sections are an integrated structure, the first section and the third section are parallel, the second section is perpendicular to the first section and the third section, an elliptical connecting hole is provided in the middle of the first section, the elliptical connecting hole is used to connect the railway turnout (9) through bolts and nuts, and triangular cut corners are provided at both ends of the second section, the triangular cut corners are of the same shape as the triangular filling block (5), and the triangular filling block (5) is installed at the cut corners of the locking frame (10).

4. The railway turnout snow melting locking frame heating mechanism according to claim 1 is characterized by: After the remaining parts other than the aluminum alloy heat conductive pad (2) are assembled, the elastic clamp part is stretched open and inserted into the locking frame (10). The heating mechanism fastens the locking frame (10) by its own elastic force. Finally, the bolts fixing the locking frame (10) are loosened, and the elastic pressing piece (4) is inserted and the bolts are tightened. The elastic pressing piece (4) plays a double tightening role. When the electric heating element is energized, the heat will heat the locking frame (10) through the aluminum alloy heat conductive pad (2) and the L-shaped 180W electric heating element (1).

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