Railway turnout outer locking device heating assembly

Abstract

The embodiment of the application relates to the field of devices for removing ice and snow on railway tracks by heating, and particularly relates to a railway turnout outer locking device heating assembly, which comprises a locking frame heating assembly for heating the locking frame, the locking frame heating assembly comprises two locking frame heating pieces and a heating connecting piece connecting the two locking frame heating pieces; each locking frame heating piece heats an extension. The locking frame heating piece comprises a surface heating piece, a heating piece support plate and a heating mounting piece. The surface heating piece is used for heating an extension; the heating piece support plate is arranged on the side surface of the extension opposite to the locking frame mounting piece, and the surface heating piece is arranged on the side surface of the heating piece support plate facing the extension; and the heating mounting piece is used for abuttingly mounting the heating piece support plate and the extension on the extension. The railway turnout outer locking device heating assembly provided by the embodiment of the application can greatly improve the heating efficiency, thereby improving the snow melting effect.

Description

Technical Field

[0001] The embodiments of this application relate to the field of devices for removing ice and snow from railway tracks using a heating method, and specifically to a heating component for an external locking device of a railway turnout. Background Technology

[0002] The statements herein are provided merely as background information in connection with this application and do not necessarily constitute prior art.

[0003] A turnout is a track connection device in a railway system. It mainly consists of a fixed, immovable stock rail, a movable switch rail, and an external locking device. The external locking device unlocks or locks the switch rail to the stock rail, changing their contact state and allowing locomotives and rolling stock to switch onto or cross tracks. In winter, snow and ice can obstruct the external locking device, preventing the turnout from functioning properly and affecting railway operations. Electric heating turnout snow-melting equipment can heat the external locking device, effectively solving the problem of turnout malfunction caused by snow and ice obstructing the device in winter, playing a vital role in railway operations.

[0004] Currently, there are still many limitations when using electrically heated turnout snow melting equipment. Summary of the Invention

[0005] A brief overview of this application is provided below to offer a basic understanding of certain aspects thereof. It should be understood that this overview is not an exhaustive summary of the application. It is not intended to identify key or essential parts of the application, nor is it intended to limit its scope. Its purpose is merely to present certain concepts in a simplified form as a prelude to the more detailed description that follows.

[0006] To address the aforementioned problems, embodiments of this application provide a heating assembly for a railway turnout external locking device, comprising a locking frame heating assembly for heating a roller-type locking frame of the railway turnout external locking device. The locking frame heating assembly includes two locking frame heating elements and a heating connector for connecting the two locking frame heating elements. Each locking frame heating element is used to heat an extension of the frame body of the roller-type locking frame. Each locking frame heating element includes a planar heating element, a heating element support plate, and a heating mounting element. The planar heating element provides heat to heat an extension of the frame body; the heating element support plate is disposed on the side of the heating element support plate facing the extension, opposite to the locking frame mounting element; the heating mounting element is used to abut the heating element support plate against the extension and install it onto the extension.

[0007] The heating assembly for the railway turnout external locking device provided in the embodiments of this application heats the two extensions of the frame body through the surface heating elements of the two locking frame heating elements. This melts the ice and snow on the locking frame of the railway turnout external locking device, preventing ice and snow from blocking the locking frame. Furthermore, the use of surface heating elements improves the heating area and heating uniformity, ensuring uniform heating of the locking frame body, improving heating efficiency, enhancing the ice and snow melting effect, and reducing mechanical damage caused by non-uniform heating. Since the surface heating elements are disposed on the side surface of the heating element support plate facing the extension, and the heating element support plate is abutted against the extension by the heating mounting component, the surface heating elements can directly contact the extension, allowing the heat from the surface heating elements to be directly conducted to the frame body, significantly improving heating efficiency and thus enhancing the snow melting effect. Attached Figure Description

[0008] Other objects and advantages of this application will become apparent from the following description of embodiments of this application with reference to the accompanying drawings, and will help to provide a comprehensive understanding of this application.

[0009] Figure 1 This is a schematic diagram of the structure of the heating assembly of the locking frame of the railway turnout external locking device heating component and the roller-type locking frame of the railway turnout external locking device after assembly, according to an embodiment of this application.

[0010] Figure 2 yes Figure 1 The diagram shows the structure of the locking frame heating assembly.

[0011] Figure 3 yes Figure 2 The diagram shows a structural schematic of the locking frame heating assembly from another angle, with the heating connectors omitted.

[0012] Figure 4 yes Figure 2 An exploded view of the electrical connections of the locking frame heating element is shown.

[0013] Figure 5 yes Figure 4 The diagram shows the structure of the first connector and snap-fit ​​assembly.

[0014] Figure 6 yes Figure 4 The diagram shows the structure of the first connector.

[0015] Figure 7 yes Figure 4 The diagram shows the structure of the second connector.

[0016] Figure 8This is a schematic diagram of the structure of the heating assembly of the locking rod of the railway turnout external locking device heating assembly and the locking rod of the railway turnout external locking device after assembly, according to an embodiment of this application.

[0017] Figure 9 yes Figure 8 The diagram shows the structure of the locking rod heating assembly.

[0018] Figure 10 yes Figure 9 The diagram shown illustrates the structure of the locking rod heating assembly after omitting the third mounting plate.

[0019] Figure 11 yes Figure 1 The diagram shows a front view of the assembled locking frame heating assembly and the roller-type locking frame of the railway turnout external locking device.

[0020] Explanation of reference numerals in the attached figures:

[0021] 10. Locking frame heating assembly;

[0022] 11. Locking frame heating element; 111. Surface heating element; 1110. Lead wire;

[0023] 112. Heating element support plate; 1120. Folding section;

[0024] 113. Heating installation component; 1131. Top baffle; 11310. Abutment part;

[0025] 1132. Bottom baffle; 1133. Top connecting plate; 11330. Through hole; 1134. Side baffle; 1135. Side snap-fit ​​component; 1136. Bottom abutment component;

[0026] 114. Electrical connector; 1141. First connector; 11411. First connector body; 11412. Snap-fit ​​connector; 11413. First insertion interface; 11414. Second insertion interface; 1142. Second connector; 11421. Second connector body; 11422. First insertion interface; 11423. Second insertion interface; 1143. Snap-fit ​​connector; 11430. Snap-fit ​​groove; 11431. Connecting groove; 1144. Snap-fit ​​mating part; 1145. Protective sleeve;

[0027] 115. Sealing materials;

[0028] 12. Heating connector; 120. Rod; 121. Nut; 122. Sleeve;

[0029] 20. Locking rod heating assembly; 21. Locking rod surface heating element; 210. Lead wire;

[0030] 22. Locking rod heating element support plate; 220. Folding section;

[0031] 23. Heated mounting bracket for locking bar; 231. First mounting plate; 232. Second mounting plate; 233. Third mounting plate;

[0032] 230, Fastener; 2301, Mating Hole; 2302, Nut;

[0033] 300, Locking frame; 301, Frame body; 3011, Extension; 3012, Roller; 302, Frame mounting part; 400, Locking rod.

[0034] It should be noted that the accompanying drawings are not necessarily drawn to scale, but are shown only in a schematic manner without affecting the reader's understanding. Detailed Implementation

[0035] Exemplary embodiments of this application will be described below with reference to the accompanying drawings. For clarity and brevity, not all features of actual implementations are described in the specification. However, it should be understood that many implementation-specific decisions must be made in the development of any such actual embodiment to achieve the developer's specific goals, such as complying with constraints related to the system and business, and these constraints may vary depending on the implementation. Furthermore, it should be understood that while development work can be very complex and time-consuming, such development work is merely a routine task for those skilled in the art who benefit from the content of this application.

[0036] It should also be noted that, in order to avoid obscuring this application with unnecessary details, only the equipment structure and / or processing steps closely related to the solution according to this application are shown in the accompanying drawings, while other details that are not closely related to this application are omitted.

[0037] In related technologies, the heating element for heating the locking frame is usually located on the side of the locking frame. The inventors of this application have discovered that since the side of the locking frame is usually not a machined surface, the side of the locking frame is not flat enough, resulting in low heating efficiency of the heating element for heating the locking frame and poor melting effect on ice and snow.

[0038] To address the aforementioned issues, embodiments of this application provide a heating assembly for an external locking device of a railway turnout.

[0039] See Figure 1 The embodiment of this application provides a schematic diagram of the structure of the locking frame heating assembly 10 of the railway turnout external locking device heating assembly after assembly with the roller-type locking frame 300 of the railway turnout external locking device. The railway turnout external locking device heating assembly may include a locking frame heating assembly for heating the roller-type locking frame 300 of the railway turnout external locking device.

[0040] See Figure 1 and Figure 2 , Figure 2 yes Figure 1 The schematic diagram of the locking frame heating assembly 10 shown includes two locking frame heating elements 11 and a heating connector 12 for connecting the two locking frame heating elements 11; wherein each locking frame heating element 11 is used to heat an extension 3011 of the frame body 301 of the roller-type locking frame 300.

[0041] See Figure 1 , Figure 2 as well as Figure 3 , Figure 3 yes Figure 2 The diagram shows a structural schematic of the locking frame heating assembly 10 from another angle, omitting the heating connector 12. Each locking frame heating element 11 may include a planar heating element 111, a heating element support plate 112, and a heating mounting element 113. The planar heating element 111 provides heat to heat an extension 3011 of the frame body 301; the heating element support plate 112 is disposed on the side surface of the extension 3011 opposite to the locking frame mounting element, and the planar heating element 111 is disposed on the side surface of the heating element support plate 112 facing the extension 3011; the heating mounting element 113 is used to abut against the extension 3011 and mount the heating element support plate 112 to the extension 3011.

[0042] The heating assembly for the railway turnout external locking device provided in the embodiments of this application provides heat to the two extensions 3011 of the frame body 301 through two planar heating elements 111 of the two locking frame heating elements 11. This heats the ice and snow on the locking frame 300 of the railway turnout external locking device, preventing ice and snow from blocking the locking frame 300. Furthermore, the use of planar heating elements 111 helps to increase the heating area and heating uniformity, thereby ensuring that the frame body 301 of the locking frame 300 is heated evenly, which helps to improve heating efficiency and improve the effect of melting ice and snow. It also avoids mechanical damage to the railway turnout external locking device due to uneven heating. Meanwhile, the surface heating element 111 is disposed on the side surface of the heating element support plate 112 facing the extension 3011. The heating element support plate 112 and the extension 3011 are abutted and installed on the extension 3011 by the heating mounting component 113, so that the surface heating element 111 can directly contact the extension 3011, thereby allowing the heat of the surface heating element 111 to be directly conducted to the frame body 301, greatly improving the heating efficiency and thus improving the snow melting effect.

[0043] In some embodiments, the external locking device for railway turnouts may include locking frames disposed on both sides of the main rail and locking rods 400 disposed below the main rail.

[0044] The external locking device for railway turnouts can be an HRS type external locking device. The locking frame of the HRS type external locking device is a roller-type locking frame 300. The roller-type locking frame 300 may include a frame body 301 and a frame mounting portion 302 for mounting the frame body 301 to a locking frame mounting member. The locking frame mounting member is, for example, a rail or a support rail. The frame body 301 is typically located further away from the locking frame mounting member than the frame mounting portion 302. The locking frame mounting member is typically located between the locking frame and the locking rod.

[0045] The frame body 301 may include two oppositely arranged extensions 3011 and rollers 3012 disposed at the lower ends of the two extensions 3011.

[0046] In some embodiments, the heating element support plate 112 and the planar heating element 111 have substantially the same shape and size as the side surface of the extension 3011 opposite to the locking frame mounting member, so as to increase the heating area and heating uniformity of the extension 3011 and improve the heating effect.

[0047] In some embodiments, the two locking frame heating elements 11 can be symmetrically arranged. The opposing surfaces of the two heating element support plates 112 can be referred to as inner surfaces, and the opposing surfaces of the two extensions 3011 can also be referred to as inner surfaces; the opposing surfaces of the two heating element support plates 112 can be referred to as outer surfaces, and the opposing surfaces of the two extensions 3011 can also be referred to as outer surfaces. The inner surfaces of the heating element support plates 112 face towards the inner surface of the other heating element support plate 112 and do not protrude beyond the corresponding inner surfaces of the extensions 3011, thereby avoiding interference with the locking rod 400.

[0048] In some embodiments, the planar heating element 111 can be a planar structure made of a flexible electric heating material. When energized, the planar heating element 111 generates and releases heat outwards. Because the planar heating element 111 is a planar structure made of a flexible electric heating material, when the heating element support plate 112 is tightly mounted against the extension 3011 of the frame body 301 using the heating mounting member 113, the planar heating element 111 can make close contact with the extension 3011 through slight deformation, thereby improving the thermal conductivity between the planar heating element 111 and the extension 3011 and reducing heat loss.

[0049] The planar heating element 111 can be fixedly mounted on the heating element support plate 112 by gluing or hot pressing, thereby facilitating installation, maintenance and replacement.

[0050] See Figure 2 and Figure 3In some embodiments, the heating mounting member 113 may include a top baffle 1131 and a bottom baffle 1132. The top baffle 1131 is connected to the upper end of the heating element support plate 112 and extends along the top surface of the extension 3011 toward the side where the frame mounting portion 302 is located; the bottom baffle 1132 is connected to the lower end of the heating element support plate 112 and extends along the bottom surface of the extension 3011 toward the side where the frame mounting portion 302 is located; the top baffle 1131 and the bottom baffle 1132 abut against the top surface and bottom surface of the extension 3011, respectively. In such embodiments, by having the top baffle 1131 and the bottom baffle 1132 abut against the top surface and bottom surface of the extension 3011, the heating element support plate 112 is prevented from moving up and down relative to the extension 3011, ensuring that the planar heating element 111 and the extension 3011 can abut face to face.

[0051] See Figure 2 and Figure 3 In some embodiments, the heating mounting member 113 may further include a top connecting plate 1133, which is connected to the end of the top baffle 11 away from the other locking frame heating member 11 and extends upwards. The top connecting plate 1133 forms a through hole 11330. The heating connector 12 passes through the through hole 11330 of the top connecting plates 1133 of the two locking frame heating members 11, connecting the two locking frame heating members 11. In such an embodiment, since the top baffle 1131 and the bottom baffle 1132 abut against the top surface and the bottom surface of the extension 3011, respectively, connecting the top connecting plates 1133 of the two locking frame heating members 11 through the heating connector 12 helps to strengthen the abutment effect between the top baffle 1131 and the bottom baffle 1132 and the top surface and the bottom surface of the extension 3011, while also avoiding interference with the locking frame 300 and preventing any impact on the normal use of the locking frame 300.

[0052] See Figure 2 , Figure 3 as well as Figure 11 , Figure 11 yes Figure 1The diagram shows a front view of the assembled roller-type locking frame of the locking frame heating assembly and the external locking device of the railway turnout. In some embodiments, the heating connector 12 may include a rod 120 with a thread at least one end, at least one nut 121, and a sleeve 122. The rod 120 passes through the through hole 11330 of the top connecting plate 1133 of the two locking frame heating elements 11 and is connected to the nut 121; the sleeve 122 is fitted onto the rod 120 between the top connecting plates 1133 of the two locking frame heating elements 11 to limit the minimum distance between the top connecting plates 1133 of the two locking frame heating elements 11. In such an embodiment, limiting the minimum distance between the top connecting plates 1133 of the two locking frame heating elements 11 by the sleeve 122 prevents deformation of the heating element support plate 112 due to overtight installation of the rod 120 and the nut 121, thereby affecting the thermal conductivity between the planar heating element 111 and the extension 3011.

[0053] See Figure 2 , Figure 3 as well as Figure 11 In some embodiments, the top baffle 1131 forms an abutment portion 11310, which abuts against the top surface of the extension 3011. After the locking frame heating assembly 10 is assembled with the locking frame 300, due to the presence of machining gaps, there is a gap along the height direction between the heating mounting part 113 of the locking frame heating assembly 10 and the extension 3011 of the locking frame 300 (i.e., the sum of the gap between the top baffle 1131 and the top surface of the extension 3011, and the gap between the bottom baffle 1132 and the bottom surface of the extension 3011). If the rod 120 and the nut 121 are tightened too much, the two top connecting plates 1133 will be too close together, causing the two top... The opposite end of the top baffle 1131 is tilted upwards, affecting the contact between the top baffle 1131 and the top surface of the extension 3011. In the embodiments of this application, by forming an abutment portion 11310, the abutment portion 11310 abuts against the top surface of the extension 3011, which can eliminate the gap in the height direction and ensure that the top baffle 1131 can abut against the top surface of the extension 3011, making the installation of the locking frame heating element 11 more stable and preventing relative movement between the locking frame heating element 11 and the locking frame 300.

[0054] See Figure 2 and Figure 3In some embodiments, the surface of the abutment portion 11310 away from the top baffle 1131 can be a slope. The slope extends downward in a direction away from the other locking frame heating element 11, so that the height of the end of the abutment portion 11310 away from the other locking frame heating element 11 is greater than the height of the end of the abutment portion 11310 close to the other locking frame heating element 11. This allows the abutment portion 11310 to still abut against the top surface of the extension portion 3011 even when the end of the top baffle 1131 away from it is tilted upward, thus eliminating installation instability caused by processing gaps.

[0055] See Figure 2 and Figure 3 In some embodiments, the heating mount 113 may further include a side baffle 1134 and a side snap-fit ​​member 1135. The side baffle 1134 is connected to the middle of the heating element support plate 112 on the side away from the other locking frame heating element 11, and extends along the side surface of the extension 3011 (i.e., the outer surface of the extension 3011) toward the side where the frame mount 302 is located; the side snap-fit ​​member 1135 is connected to the side baffle 1134 and is used to snap onto the side surface of the extension 3011 opposite to the heating element support plate 112. In this embodiment, after the heating element support plate 112 is installed abutting against the extension 3011, the above-mentioned arrangement helps to prevent relative movement between the locking frame heating element 11 and the extension 3011 in the width direction (i.e., the extension direction of the roller 3012) and the thickness direction (i.e., the directions perpendicular to the extension direction of the roller 3012 and the height direction of the heating element support plate 112, respectively), thus ensuring a stable installation.

[0056] In some embodiments, the dimension of the side baffle 1134 along the height direction of the extension 3011 is larger than the dimension of the side snap-fit ​​1135 along the height direction of the extension 3011. The side baffle 1134 is an inclined surface that mates with the side surface of the extension 3011, thereby facilitating a tight fit with the side surface of the extension 3011. The side snap-fit ​​1135 may be an L-shaped member.

[0057] See Figure 2 and Figure 3 In some embodiments, the heating mounting member 113 may further include a bottom abutment member 1136, which connects to the side of the bottom baffle 1132 near the other locking frame heating member 11, for abutting against the side surface of the extension 3011 opposite to the side baffle 1134 (i.e., the inner surface of the extension 3011). In such embodiments, after the heating member support plate 112 is abuttedly mounted to the extension 3011, the above-described arrangement further prevents relative movement between the locking frame heating member 11 and the extension 3011 in the width direction, further ensuring a stable installation.

[0058] In some embodiments, after each locking frame heating element 11 and extension 3011 is assembled, the length of the sleeve 122 is determined based on the distance between the two top connecting plates 1133 and the gap between each side baffle 1134 and the corresponding extension 3011. It is readily understood that the length of the sleeve 122 limits the minimum distance between the two top connecting plates 1133. With the sleeve 122 determined in the manner described above, deformation of the heating element support plate 112 due to overtightening of the rod 120 and nut 121 can be avoided when assembling the rod 120 and nut 121.

[0059] Specifically, the locking frame heating element 11 and the extension 3011 can be assembled using three-dimensional software simulation, and the distance between the two top connecting plates 1133 and the gap between each side baffle 1134 and the corresponding extension 3011 in the free state can be measured. The length of the sleeve 122 can be determined by subtracting the gap between each side baffle 1134 and the corresponding extension 3011 from the distance between the two top connecting plates 1133 in the free state.

[0060] See Figure 2 In some embodiments, each locking frame heating element 11 may further include an electrical connector 114 and a sealing material 115. The electrical connector 114 is used to electrically connect a power cord to the lead wire 1110 of the surface heating element 111. A folded portion 1120 is formed on the top of the heating element support plate 112. The lead wire 1110 of the surface heating element 111 extends from the folded portion 1120 and connects to the electrical connector 114. The sealing material 115 is filled in the folded portion 1120 to seal the lead wire 1110. In this embodiment, by providing a folded portion 1120 on the heating element support plate 112, the lead wire 1110 can be extended to the outside of the heating element 11 of the locking frame and connected to the electrical connector 114 without affecting the normal operation of the locking frame 300; and the sealing material 115 is filled in the folded portion 1120 to facilitate the filling operation of the sealing material 115, so that the sealing material 115 is firmly sealed and not easy to fall off, and has a good dustproof and waterproof effect on the lead wire 1110 lead-out portion.

[0061] The sealing material 115 is, for example, a sealant.

[0062] The folded portion 1120 can be formed on the top of the heating element support plate 112 and close to another locking frame heating element 11, so that it will not affect the normal operation of the locking frame 300 and will help ensure the structural strength of the heating element support plate 112 itself.

[0063] In some embodiments, the folded portion 1120 can be formed by forming a U-shaped opening at the top of the heating element support plate 112, and folding the U-shaped plate inside the U-shaped opening to form an angle with the plane where the heating element support plate 112 is located.

[0064] In some embodiments, the opening of the folded portion 1120 faces upward to facilitate the filling of the sealing material 115.

[0065] In some embodiments, the angle between the plane containing the folded portion 1120 and the plane containing the heating element support plate 112 is 20°-30°, so that the folded portion 1120 does not affect the extension of the lead wire 1110 while preventing the lead wire 1110 from bending at the folded portion 1120, thereby protecting the lead wire 1110. For example, the angle between the plane containing the folded portion 1120 and the plane containing the heating element support plate 112 is 25°.

[0066] See Figure 4 , Figure 4 yes Figure 2 The schematic diagram shown is of the structure of the electrical connector 114 of the locking frame heating element 11. In some embodiments, the electrical connector 114 may include a first connector 1141, a second connector 1142, a snap-fit ​​element 1143, a snap-fit ​​mating element 1144, and a protective sleeve 1145. The first connector 1141 is electrically connected to the lead wire 1110 of the surface heating element 111; the second connector 1142 is electrically connected to the power cord; the first connector 1141 and the second connector 1142 are electrically connected by plugging in; the snap-fit ​​member 1143 and the snap-fit ​​mating member 1144 are respectively disposed on the first connector 1141 and the second connector 1142 or respectively disposed on the second connector 1142 and the first connector 1141, for snap-fit ​​mating member 1143 and snap-fit ​​mating member 1144 after the first connector 1141 and the second connector 1142 are plugged in; after the snap-fit ​​mating member 1143 and the snap-fit ​​mating member 1144 are snap-fit ​​mating, the protective sleeve 1145 is fitted onto the first connector 1141 and the second connector 1142. In this embodiment, after the first connector 1141 and the second connector 1142 are inserted, the snap-fit ​​member 1143 and the snap-fit ​​mating member 1144 engage to prevent the first connector 1141 and the second connector 1142 from becoming loose. Furthermore, the first connector 1141 and the second connector 1142 are electrically connected through insertion, facilitating disassembly and maintenance. Simultaneously, by covering the first connector 1141 and the second connector 1142 with the protective sleeve 1145, the insertion points of the first connector 1141 and the second connector 1142 are protected, achieving waterproofing, dustproofing, and protection against natural corrosion and aging at the insertion points. Moreover, by covering the first connector 1141 and the second connector 1142 with the protective sleeve 1145, accidental disconnection of the first connector 1141 and the second connector 1142 is avoided, ensuring the stability of the insertion.

[0067] Protective sleeve 1145 is, for example, heat shrink tubing.

[0068] In some embodiments, a snap-fit ​​member 1143 is disposed on a first connector 1141, and a snap-fit ​​mating member 1144 is disposed on a second connector 1142. In other embodiments, a snap-fit ​​member 1143 is disposed on a second connector 1142, and a snap-fit ​​mating member 1144 is disposed on a first connector 1141.

[0069] See Figure 5 , Figure 6 as well as Figure 7 , Figure 5 yes Figure 4 The diagram shown is a structural schematic of the first connector 1141 and the snap-fit ​​member 1143 after assembly. Figure 6 yes Figure 4 The diagram shown is a structural schematic of the first connector 1141. Figure 7 yes Figure 4 The schematic diagram of the second connector 1142 shown illustrates that, in some embodiments, a snap-fit ​​member 1143 is rotatably disposed on either the first connector 1141 or the second connector 1142, forming a snap-fit ​​groove 11430; a snap-fit ​​mating member 1144 is fixedly disposed on either the second connector 1142 or the first connector 1141, and when the snap-fit ​​member 1143 rotates, the snap-fit ​​mating member 1144 can enter the snap-fit ​​groove 11430. In such embodiments, the above arrangement can reduce the possibility of the first connector 1141 and the second connector 1142 disconnecting due to misoperation, which is beneficial to improving the stability of the snap-fit.

[0070] In some embodiments, the snap-fit ​​member 1143 is rotatably disposed on the first connector 1141, and the snap-fit ​​mating member 1144 is fixedly disposed on the second connector 1142. In other embodiments, the snap-fit ​​member 1143 is rotatably disposed on the second connector 1142, and the snap-fit ​​mating member 1144 is fixedly disposed on the first connector 1141.

[0071] See Figure 5 and Figure 6 In some embodiments, the first connector 1141 may further include a first connector body 11411 and two snap-fit ​​connectors 11412. One end of the first connector body 11411 forms a first insertion interface 11413 and a second insertion interface 11414. The first connector body 11411 is inserted into the second connector 1142 through the first insertion interface 11413 and the second insertion interface 11414. The two snap-fit ​​connectors 11412 are disposed opposite to each other on both sides of the first connector body 11411, and the snap-fit ​​connector 1143 is connected to the first connector body 11411 through the snap-fit ​​connectors 11412.

[0072] In some embodiments, the snap-fit ​​member 1143 forms a connecting groove 11431, and the snap-fit ​​connector 11412 can enter the connecting groove 11431 so that the snap-fit ​​member 1143 can be rotatably disposed on the first connector 1141.

[0073] In some embodiments, the second connector 1142 may further include a second connector body 11421, a first plug 11422, and a second plug 11423. The first plug 11422 and the second plug 11423 are disposed at one end of the second connector body 11421. The second connector body 11421 is connected to the first connector body 11411 by the first plug 11422 engaging with the first plug interface 11413 and the second plug 11423 engaging with the second plug interface 11414.

[0074] In some embodiments, the shape and position of the first connector 11422 correspond to the shape and position of the first interface 11413, the shape and position of the second connector 11423 correspond to the shape and position of the second interface 11414, and the shapes of the first interface 11413 and the second interface 11414 are different, and the shapes of the first connector 11422 and the second connector 11423 are different to prevent errors during insertion.

[0075] The cross-section of the first connector 11422 is, for example, circular, and the cross-section of the second connector 11423 is, for example, rectangular.

[0076] See Figure 8 , Figure 8 This is a schematic diagram of the structure of the heating assembly of the external locking device of the railway turnout provided in the embodiments of this application after the locking rod heating assembly 20 and the locking rod 400 of the external locking device of the railway turnout are assembled. In some embodiments, the heating assembly of the external locking device of the railway turnout may also include the locking rod heating assembly 20, which is used to heat the locking rod 400 of the external locking device of the railway turnout.

[0077] See Figure 9 and Figure 10 , Figure 9 yes Figure 8 The diagram shown illustrates the structure of the locking rod heating assembly 20. Figure 10 yes Figure 9The schematic diagram shown is of the locking bar heating assembly 20 after omitting the third mounting plate 233. The locking bar heating assembly 20 may include a locking bar surface heating element 21, a locking bar heating element support plate 22, and a locking bar heating mounting component 23. The locking bar surface heating element 21 is used to provide heat to heat the locking bar 400; the locking bar heating element support plate 22 is disposed facing the upper surface of the locking bar 400, and the locking bar surface heating element 21 is disposed on the lower surface of the locking bar heating element support plate 22; the locking bar heating mounting component 23 is used to abut against the locking bar 400 and install the locking bar heating element support plate 22 to the locking bar 400. In this embodiment, the locking rod 400 of the railway external locking device is heated by the surface heating element 21, which melts the ice and snow on the locking rod 400 and prevents the ice and snow from blocking the locking rod 400. The surface heating element improves the heating area and heating uniformity, ensuring uniform heating of the locking rod 400 and reducing mechanical damage caused by uneven heating. Since the locking rod heating element support plate 22 faces the upper surface of the locking rod 400, and the surface heating element 21 is located on the lower surface of the support plate 22, the locking rod heating mounting component 23 abuts against the locking rod 400, allowing the surface heating element 21 to directly contact the locking rod 400. This allows the heat from the surface heating element 21 to be directly conducted to the locking rod 400, significantly improving heating efficiency and thus enhancing the snow melting effect.

[0078] The embodiments of this application, by setting a locking frame heating assembly 10 and a locking rod heating assembly 20, directly heat the locking frame 300 and the locking rod 400 respectively, and by using a planar heating element to improve the heating area and heating uniformity, allow heat to be transferred from the locking frame 300 and the locking rod 400 to the entire device, thereby melting the ice and snow on the outer surface of the railway turnout external locking device, while avoiding a large temperature difference in the railway turnout external locking device.

[0079] In some embodiments, the surface heating element 111 and the locking rod surface heating element 21 can have a protection rating of IP67 to adapt to the working conditions of railway turnouts in the field.

[0080] In some embodiments, the locking rod surface heating element 21 can be disposed on the locking rod heating element support plate 22 by means of adhesive bonding or hot pressing, thereby facilitating the installation, maintenance and replacement of the locking rod surface heating element 21.

[0081] In some embodiments, the locking rod heating mounting component 23 may include two first mounting plates 231 that are respectively connected to both sides of the locking rod heating component support plate 22 and extend downward along the surface of the locking rod 400, two second mounting plates 232 that are respectively connected to each of the first mounting plates 231, and a third mounting plate 233 that is detachably connected to the two second mounting plates 232; the two first mounting plates 231, the two second mounting plates 232 and the locking rod heating component support plate 22 together form a "U" shape, and the third mounting plate 233 is connected to the two second mounting plates 232 at the bottom of the locking rod 400 so that the locking rod surface heating component 21 is in close contact with the upper surface of the locking rod 400 and is easy to install and remove.

[0082] In some embodiments, the third mounting plate 233 is detachably connected to the two second mounting plates 232 via a plurality of fasteners 230. Both the third mounting plate 233 and the second mounting plate 232 have multiple sets of mating holes 2301. The fasteners 230 include bolts and nuts 2302. Each bolt passes sequentially from bottom to top through a corresponding set of mating holes 2301 in the third mounting plate 233 and the second mounting plate 232, and is then tightened to a gate-type threaded fastener via a nut 2302. In some embodiments, a spring washer is provided at the connection point of the bolt and nut 2302.

[0083] In some embodiments, the locking rod heating assembly 20 may further include an electrical connector 114 and a sealing material 115. The electrical connector 114 is used to electrically connect a power cord to the lead 210 of the locking rod surface heating element 21; a folded portion 220 is formed at the top of the locking rod heating element support plate 22, from which the lead 210 of the locking rod surface heating element 21 extends and connects to the electrical connector 114. The sealing material 115 fills the folded portion 220 to seal the lead 210. The structure of the electrical connector 114 of the locking rod heating assembly 20 is the same as that of the electrical connector 114 of the locking frame heating assembly 10.

[0084] In some embodiments, a folded portion 220 may be formed at one end of the locking rod heating element support plate 22 to facilitate wire lead-in. The opening of the folded portion 220 is flush with one end of the locking rod heating element support plate 22, thereby facilitating processing and wire lead-in without adversely affecting the locking rod 400.

[0085] Regarding the embodiments of this application, it should also be noted that, without conflict, the embodiments of this application and the features in the embodiments can be combined with each other to obtain new embodiments.

[0086] The above description is merely a specific embodiment of this application, but the scope of protection of this application is not limited thereto. The scope of protection of this application shall be determined by the scope of the claims.

Claims

1. A heating assembly for an external locking device of a railway turnout, characterized in that, include: A locking frame heating assembly is used to heat the roller-type locking frame of the external locking device of the railway turnout. The locking frame heating assembly includes two locking frame heating elements and a heating connector for connecting the two locking frame heating elements. Wherein, each of the locking frame heating elements is used to heat an extension of the frame body of the roller-type locking frame; each of the locking frame heating elements includes: A planar heating element is used to provide heat to heat an extension of the frame body; A heating element support plate is provided on the side surface of the extension that is opposite to the locking frame mounting member, and the planar heating element is provided on the side surface of the heating element support plate that faces the extension. A heating mounting component is used to abut against the extension portion and install the heating element support plate and the extension portion together on the extension portion; The heating mounting component includes: The top baffle is connected to the upper end of the heating element support plate and extends along the top surface of the extension toward the side where the frame mounting part is located. The bottom baffle is connected to the lower end of the heating element support plate and extends along the bottom surface of the extension toward the side where the frame mounting part is located. The top baffle and the bottom baffle respectively abut against the top surface and the bottom surface of the extension; The heating mounting component also includes: A top connecting plate is connected to the end of the top baffle away from the other locking frame heating element and extends upward, the top connecting plate forming a through hole; The heating connector passes through the through hole in the top connecting plate of the two locking frame heating elements to connect the two locking frame heating elements. This helps to strengthen the contact effect between the top baffle and the bottom baffle and the top and bottom surfaces of the extension. At the same time, it can also avoid interference with the locking frame and avoid affecting the normal use of the locking frame. The heating connector includes: A rod with a thread at least one end and at least one nut, the rod passing through a through hole in the top connecting plate of the locking frame heating element and connected to the nut; A sleeve is fitted onto the rod between the top connecting plates of the two locking frame heating elements to limit the minimum distance between the top connecting plates of the two locking frame heating elements, preventing the heating element support plate from deforming due to excessive tightness of the rod and the nut, thereby affecting the thermal conductivity between the planar heating element and the extension.

2. The heating assembly according to claim 1, characterized in that, The top baffle forms an abutment portion, which is used to abut against the top surface of the extension.

3. The heating assembly according to claim 2, characterized in that, The surface of the abutting part away from the top baffle is a slope, and the slope extends downward in a direction away from the other locking frame heating element.

4. The heating assembly according to claim 2, characterized in that, The heating mounting component also includes: A side baffle is connected to the middle of the heating element support plate on the side of the heating element support plate away from the other locking frame heating element, and extends along the side surface of the extension toward the side where the frame mounting part is located. A side snap-fit ​​component, connected to the side baffle, is used to snap onto the side surface of the extension that faces away from the heating element support plate.

5. The heating assembly according to claim 4, characterized in that, The heating mounting component also includes: The bottom abutment is connected to the side of the bottom baffle near the other locking frame heating element, and is used to abut against the side surface of the extension opposite to the side baffle.

6. The heating assembly according to claim 4, characterized in that, After each of the locking frame heating elements is assembled with the extension, the length of the sleeve is determined based on the distance between the two top connecting plates and the gap between each of the side baffles and the corresponding extension.

7. The heating assembly according to claim 1, characterized in that, Each of the locking frame heating elements further includes: Electrical connector for electrically connecting a power cord to the leads of the planar heating element; The top of the heating element support plate forms a folded portion, and the lead wire of the planar heating element extends from the folded portion and connects to the electrical connector; A sealing material is filled into the folded portion to seal the lead wire.

8. The heating assembly according to claim 7, characterized in that, The electrical connector includes: The first connector is electrically connected to the lead wire of the planar heating element; and The second connector is electrically connected to the power cord; the first connector and the second connector are electrically connected by plugging in. A snap-fit ​​component and a snap-fit ​​mating component are respectively disposed on the first connector and the second connector or respectively disposed on the second connector and the first connector, for engaging with the snap-fit ​​component after the first connector and the second connector are inserted; The protective sleeve is fitted onto the first connector and the second connector after the snap-fit ​​component and the snap-fit ​​mating component are snapped together.

9. The heating assembly according to claim 8, characterized in that, The snap-fit ​​component is rotatably disposed on the first connector or the second connector, and the snap-fit ​​component forms a snap-fit ​​groove; The snap-fit ​​component is fixedly disposed on the second connector or the first connector. When the snap-fit ​​component rotates, it can enter the slot.

10. The heating assembly according to any one of claims 1-9, characterized in that, Also includes: A locking rod heating assembly is used to heat the locking rod of the external locking device of the railway turnout. The locking rod heating assembly includes: A surface heating element for the locking rod is used to provide heat to heat the locking rod; A locking rod heating element support plate is provided facing the upper surface of the locking rod, and the locking rod planar heating element is provided on the lower surface of the locking rod heating element support plate; A locking rod heating mounting component is used to install the locking rod heating component support plate and the locking rod abutting against the locking rod.

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