Electric heating assembly for railway turnout slide plate

Abstract

The embodiment of the invention relates to the field of railway turnout snow melting, in particular to an electric heating assembly for a railway turnout slide plate. The electrical heating assembly may include a plug-in housing and a heating member. Wherein an opening part is formed in the plug-in housing, the opening part is arranged to allow the slide plate to enter the plug-in housing so as to be plugged with the plug-in housing, and the plug-in housing can be in heat conduction connection with the slide plate; and the heating piece is in heat conduction connection with the plug-in housing. According to the electric heating assembly provided by the embodiment of the invention, the insertion housing is inserted into the slide plate, so that the heat of the heating piece can be transmitted to the slide plate through the insertion housing, the slide plate does not need to be processed and transformed, the operation difficulty is reduced, and adverse effects on the strength of the slide plate are avoided.

Description

Technical Field

[0001] The embodiments of the present application relate to the field of snow melting of railway turnouts, and in particular to an electric heating assembly for a slide bed of a railway turnout. Background Art

[0002] The statements herein merely provide background information related to the present application and do not necessarily constitute prior art.

[0003] Turnouts are line connection equipment for railway track structures. Turnouts mainly include fixed, immovable base rails and movable point rails. By changing the contact state between the point rails and base rails, locomotives can turn from one track to or cross another track. In addition to base rails and point rails, turnouts also include slide plates. The slide plates are installed on sleepers, and base rails and point rails are installed on the slide plates, where the point rails can move along the slide plates. In winter, snowy days, the turnouts cannot work properly due to ice and snow jams, which in turn affects the normal operation of the railway. Electric heating turnout snow melting equipment can effectively solve the problem of turnouts not working properly due to ice and snow jams in winter, and plays an important role in railway operations. Summary of the invention

[0004] A brief overview of the present application is provided below in order to provide a basic understanding of certain aspects of the present application. It should be understood that this overview is not an exhaustive overview of the present application. It is not intended to identify the key or important parts of the present application, nor is it intended to limit the scope of the present application. Its purpose is merely to present certain concepts in a simplified form as a prelude to a more detailed description discussed later.

[0005] In a first aspect, an embodiment of the present application provides an electric heating assembly for a railway turnout slide plate, which is used to heat the slide plate of the railway turnout. It may include a plug-in cover and a heating element. The plug-in cover is formed with an opening, and the opening is configured to allow the slide plate to enter the plug-in cover to be plugged with the plug-in cover, and the plug-in cover can be thermally connected to the slide plate; the heating element is thermally connected to the plug-in cover.

[0006] The electric heating assembly provided in the embodiment of the present application can transfer the heat of the heating element to the sliding bed plate through the plug-in cover shell by plugging the plug-in cover shell into the sliding bed plate, without the need to process or modify the sliding bed plate, thereby reducing the difficulty of operation and avoiding adverse effects on the strength of the sliding bed plate.

[0007] In a second aspect, an embodiment of the present application provides an electric heating assembly for a railway turnout, comprising: the electric heating assembly of the first aspect of the present application, used to heat the slide bed of the railway turnout; and a foldable electric heating assembly, used to heat the base rail of the railway turnout. BRIEF DESCRIPTION OF THE DRAWINGS

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

[0009] Figure 1 It is a top view schematic diagram of the slide bed plate electric heating assembly provided in an embodiment of the present application after being installed on a railway turnout.

[0010] Figure 2 It is a top view schematic diagram of the assembled slide bed electric heating assembly and slide bed provided in an embodiment of the present application.

[0011] Figure 3 yes Figure 2 A schematic side view of the assembled slide bed electric heating assembly and slide bed.

[0012] Figure 4 yes Figure 2 A schematic top view of the plug-in cover of the slide bed plate electric heating assembly.

[0013] Figure 5 yes Figure 4 A schematic front view of the plug-in cover in FIG.

[0014] Figure 6a yes Figure 5 A schematic cross-sectional view of the plug-in cover at AA.

[0015] Figure 6b yes Figure 5 A schematic cross-sectional view of the plug-in cover at BB.

[0016] Figure 6c yes Figure 5 Schematic cross-sectional view of the plug-in cover at CC.

[0017] Figure 7 yes Figure 2 Schematic diagram of a top view of the heating element of the slide bed plate electric heating assembly.

[0018] Figure 8 yes Figure 7 Schematic side view of the heating element in FIG.

[0019] Fig. 9 yes Figure 2 Schematic diagram of a top view of the protective plate of the slide bed plate electric heating assembly.

[0020] Fig.10 yes Fig. 9 Schematic diagram of the front view of the protection plate.

[0021] Fig.11 yes Fig. 9 Schematic diagram of the side view of the protection plate in FIG.

[0022] Fig.12 yes Figure 2 Schematic top view of the connecting plate of the slide bed plate electric heating assembly.

[0023] Fig.13 It is a schematic diagram of the structure of the foldable electric heating component provided in an embodiment of the present application when folded.

[0024] Fig.14 yes Fig.13 Schematic diagram of the structure of the foldable electric heating component when it is unfolded.

[0025] Fig.15 It is a top view schematic diagram of a foldable electric heating assembly provided in an embodiment of the present application installed on a railway turnout.

[0026] Fig.16 It is a cross-sectional schematic diagram of a rigid heating section of a foldable electric heating assembly provided in an embodiment of the present application.

[0027] Fig.17 It is a cross-sectional schematic diagram of the flexible heating section and the protective member of the foldable electric heating assembly provided in an embodiment of the present application after being assembled.

[0028] Fig.18 It is a partial structural schematic diagram of a foldable electric heating assembly with a split electrical connector provided in an embodiment of the present application.

[0029] Fig.19 yes Fig.15 A partial enlarged schematic diagram of the D area in the middle.

[0030] Fig. 20 It is a cross-sectional schematic diagram of the foldable electric heating component and the basic rail after being assembled according to the embodiment of the present application.

[0031] Fig.21 It is a cross-sectional schematic diagram of the foldable electric heating assembly provided in an embodiment of the present application after being assembled with a base rail using a connecting piece.

[0032] Description of reference numerals:

[0033] 10. Electric heating assembly; 101. Rigid heating section; 102. Flexible heating section;

[0034] 11. flexible heating element; 111. recessed portion; 12. protective tube section; 121. first protective tube section; 1211. straight tube section; 12111. first straight tube section; 1212. bent section; 122. second protective tube section; 123. adhesive strip; 13. protective element; 131. slot; 132. raised portion; 14. power cord; 141. protective hose; 15. electrical connector; 151. first connector; 1511. plug-in portion; 1512. first body; 15121. recessed portion; 152. second connector; 1521. plug-in mating portion; 1522. second body; 1 6. Fixing member; 161. Accommodating portion; 1611. Slot; 162. Connecting plate; 163. First clamping plate; 164. Second clamping plate; 165. Third clamping plate; 166. Mounting portion; 17. Clamping fitting portion; 171. First clamping fitting plate; 172. Second clamping fitting plate; 173. Third clamping fitting plate; 18. Fastening assembly; 181. Fastener; 182. Fastening fitting; 19. Connecting member; 191. Pressing portion; 192. Extending portion; 1921. First extending portion; 1922. Second extending portion; 193. Connecting portion; 194. Clamping portion;

[0035] 20. Basic rail; 21. Rail seat; 22. Rail waist; 23. Rail head;

[0036] 30. Transformer box;

[0037] 40. Electric heating assembly of slide bed;

[0038] 41. Plug-in cover; 411. Opening; 412. Plug-in side plate; 4121. Connecting mounting hole; 413. Plug-in top plate; 4131. Plug-in mounting hole; 4132. Slot; 414. Plug-in bottom plate; 4141. Through hole; 42. Heating element; 421. Top heating plate; 4211. Displacement groove; 422. Side heating plate; 43. Protective plate; 431. Protective top plate; 4311. Displacement groove; 432. Protective side plate; 4321. Notch; 44. Connecting plate; 441. Connecting main board; 442. Connecting side plate; 4421. Connecting mounting hole; 45. Fastener; 46. Fastening fitting; 47. Lead wire;

[0039] 50, slide bed plate; 51, top surface; 511, raised portion;

[0040] 60. Point rail.

[0041] It should be noted that the drawings are not necessarily drawn to scale, but are merely shown in a schematic manner that does not affect the reader's understanding. DETAILED DESCRIPTION

[0042] Exemplary embodiments of the present application will be described below in conjunction with the accompanying drawings. For the sake of clarity and conciseness, not all features of the actual implementation are described in the specification. However, it should be understood that many implementation-specific decisions must be made in the process of developing any such actual implementation in order to achieve the developer's specific goals, such as meeting those constraints related to the system and business, and these constraints may vary from implementation to implementation. In addition, it should be understood that although the development work may be very complex and time-consuming, it is only a routine task for those skilled in the art who benefit from the content of this application.

[0043] It is also necessary to explain here that, in order to avoid obscuring the present application due to unnecessary details, only the device structure and / or processing steps closely related to the scheme according to the present application are shown in the accompanying drawings, while other details that are not very relevant to the present application are omitted.

[0044] The electric heating elements of the snow-melting equipment are mainly straight or U-shaped electric heating strips, which are usually installed on the base rails in the turnout area. After the snow-melting equipment is powered on, the electric heating strips transfer heat to the base rails, and the base rails then transfer heat to the slide bed plates, point rails and other locations where snow and ice need to be melted. Due to the application environment of the turnout and the large surface area and long length of the base rails, only a part of the heat transferred from the electric heating strips to the base rails is transferred to the positions of the turnouts for melting snow and ice, and most of the other heat is lost in the surrounding ineffective heating areas. The inventors of the present application have found that in winter snowy days, this heating method is effective for melting small and medium snow, but is not ideal for melting heavy snow. The main reason for this result is that the slide bed plates, which are the key parts of the turnout area, are not directly heated.

[0045] In order to heat the slide bed of an existing turnout, the inventor of the present application processed a new slide bed and replaced the original slide bed on the turnout with the new slide bed after processing and modification. The inventor of the present application found that since the slide bed needs to bear the heavy pressure transmitted by the point rail and the stock rail, the strength of the slide bed will be adversely affected after processing and modification.

[0046] In order to solve the technical problem of how to heat the slide bed plate while avoiding adversely affecting the strength of the slide bed plate, an embodiment of the present application provides an electric heating component for heating the slide bed plate of a railway turnout. In order to distinguish it from the foldable electric heating component for heating the basic rail of the railway turnout mentioned below, the electric heating component for heating the slide bed plate of the railway turnout in the embodiment of the present application can be referred to as a slide bed plate electric heating component.

[0047] like Figures 1 to 3As shown, the slide bed plate electric heating assembly 40 provided in the embodiment of the present application may include a plug-in housing 41 and a heating element 42. The plug-in housing 41 is formed with an opening 411, and the opening 411 is configured to allow the slide bed plate 50 to enter the plug-in housing 41 to be plugged with the plug-in housing 41, and the plug-in housing 41 can be thermally connected to the slide bed plate 50; the heating element 42 is thermally connected to the plug-in housing 41. The slide bed plate electric heating assembly 40 provided in the embodiment of the present application is configured to plug the plug-in cover 41 into the slide bed plate 50, and the plug-in cover 41 is configured to be thermally connected to the slide bed plate 50 and the heating element 42 respectively. The slide bed plate electric heating assembly 40 provided in the embodiment of the present application is configured to plug the plug-in cover 41 into the slide bed plate 50, so that the heat of the heating element 42 can be transferred to the slide bed plate 50 through the plug-in cover 41, without the need to process or modify the slide bed plate 50, thereby reducing the difficulty of operation and avoiding adverse effects on the strength of the slide bed plate.

[0048] In some embodiments, the heating element 42 may be an electric heating element, which can generate heat after being powered on to heat the slide bed plate 50 to melt snow or ice. In some embodiments, the heat generated by the heating element 42 may be transferred to the slide bed plate 50 through the plug-in cover 41 to heat the slide bed plate 50.

[0049] like Figure 4 and Figure 5 As shown, in some embodiments, the plug-in housing 41 may include two plug-in side panels 412 arranged opposite to each other and a plug-in top panel 413 connected between the two plug-in side panels 412, and the space between the two plug-in side panels 412 is formed as an opening 411; the plug-in top panel 413 faces the top surface 51 of the slide bed 50 to cover part of the top surface 51 of the slide bed 50 and is thermally connected to part of the top surface 51; the two plug-in side panels 412 face the two side surfaces of the slide bed 50 and are thermally connected to the two side surfaces. The opening 411 is formed by the two plug-in side panels 412, so that the slide bed 50 and the plug-in housing 41 can be plugged; and the plug-in housing 41 and the slide bed 50 are thermally connected by the thermal connection between the plug-in top panel 413 and the top surface 51 of the slide bed 50 and the plug-in side panels 412 and the side surfaces of the slide bed 50, so as to achieve thermal connection.

[0050] See also Figure 6a , Figure 6b and Figure 6cIn some embodiments, the plug-in housing 41 may further include two plug-in bottom plates 414, which may be connected to the two plug-in side plates 412 respectively, and the plug-in bottom plates 414 may be located outside the plug-in side plates 412. A through hole 4141 may be formed on the plug-in bottom plates 414, and the through hole 4141 is used to detachably connect the plug-in bottom plates 414 to the turnout base. In some embodiments, the plug-in bottom plates 414 may be detachably connected to the turnout base by fasteners 45 passing through the through holes 4141.

[0051] See also Figure 3 and Figure 6c In some embodiments, the cross-section of the plug-in cover 41 is in a "J" shape, which not only facilitates the installation of the plug-in cover 41 but also increases the heating area of ​​the heating element 42.

[0052] See also Figure 2 In some embodiments, the top surface 51 of the slide bed plate 50 may form a protrusion 511 for the point rail 60 to slide. In some embodiments, a slot 4132 may be provided on the side of the plug-in top plate 413 facing the protrusion 511 to make way for the protrusion 511. By providing the slot 4132, the movement of the point rail 60 on the slide bed plate 50 is not affected, thereby avoiding affecting the normal use of the slide bed plate 50. In some embodiments, the slot 4132 may be U-shaped.

[0053] In some embodiments, the slide bed plate 50 can be fixed to the turnout base by fasteners 45. The turnout base can be, for example, a rail sleeper. In some embodiments, the plug-in top plate 413 can be fixed to the slide bed plate 50 by fasteners 45. The slide bed plate 50 is fixed to the turnout base and the plug-in cover 41 is fixed to the slide bed plate 50 by fasteners 45, and no additional processing or modification is required on the slide bed plate 50, so that the slide bed plate electric heating assembly 40 is easily installed on the slide bed plate 50.

[0054] In some embodiments, the fastener 45 may be a bolt. In some embodiments, the slide bed plate electric heating assembly 40 may further include a fastener 46, which may cooperate with the fastener 45 to fix the slide bed plate 50 to the turnout base and to fix the plug-in top plate 413 to the slide bed plate 50. In some embodiments, the fastener 46 may be a nut, and the fastener 46 and the fastener 45 are threadedly connected, and the size of the fastener 46 matches that of the fastener 45. For example, the fastener 45 may be an M8×30 ​​bolt, and the fastener 46 may be an M8 nut.

[0055] In some embodiments, the slide bed plate 50 has a slide bed mounting hole so that the slide bed plate 50 can be fixed to the turnout base by fasteners 45 passing through the slide bed mounting hole. Figure 4In some embodiments, the plug-in top plate 413 is provided with a plug-in mounting hole 4131, so as to fix the plug-in cover 41 to the slide bed plate 50 by means of a fastener 45 that passes through the plug-in mounting hole 4131 and the slide bed mounting hole in sequence. In some embodiments, the plug-in mounting hole 4131 is connected to the slot 4132. The plug-in mounting hole 4131 connected to the slot 4132 makes it possible to align the plug-in mounting hole 4131 with the slide bed mounting hole without removing all the fasteners 45 when installing the slide bed plate electric heating assembly 40 to the slide bed plate 50. The fastener 45 only needs to be loosened to achieve alignment of the plug-in mounting hole 4131 with the slide bed mounting hole. In some embodiments, the plug-in mounting hole 4131 can be a U-shaped hole that passes through the plug-in top plate 413 and is connected to the slot 4132.

[0056] like Figure 7 and Figure 8 As shown, in some embodiments, the heating element 42 may be a flexible sheet structure, and the heating element 42 is attached to at least part of the plug-in side plate 412 and at least part of the plug-in top plate 413 of the plug-in housing 41 on the outside of the plug-in housing 41. By attaching the heating element 42 to at least part of the plug-in side plate 412 and at least part of the plug-in top plate 413 of the plug-in housing 41, the separation of the heating element 42 from the plug-in housing 41 can be avoided; and the flexibility of the heating element 42 facilitates the attachment of the heating element 42 to the plug-in housing 41, and the sheet structure of the heating element 42 enables the heating element 42 to have a larger heating area and a uniform heating effect.

[0057] In some embodiments, the heating element 42 can be disposed on the plug-in housing 41 by heat pressing or gluing. In some embodiments, the heating element 42 can be formed of a flexible planar electric heating material.

[0058] like Figures 9 to 11 As shown, in some embodiments, the slide bed plate electric heating assembly 40 may further include a protective plate 43, which may be disposed on the outside of the heating element 42 to protect the heating element 42. By disposing the protective plate 43 on the outside of the heating element 42, it is possible to prevent hard objects from knocking against the heating element 42 and causing it to be worn out. In some embodiments, the protective plate 43 may also be used to conduct the heat generated by the heating element 42 to melt snow or ice.

[0059] See also Figure 7 and Fig. 9In some embodiments, the heating element 42 and the protective plate 43 facing the plug-in installation hole 4131 may form a clearance groove so that the fastener 45 can be directly pressed on the plug-in housing 41. By enabling the fastener 45 to be directly pressed on the plug-in housing 41, the fastener 45 is prevented from being pressed on the protective plate 43 and the heating element 42, thereby preventing the fastener 45 from causing pressure on the heating element 42, causing it to be consumed and worn. In some embodiments, the heating element 42 may form a clearance groove 4211 on the portion facing the plug-in installation hole 4131, and the protective plate 43 may form a clearance groove 4311 on the portion facing the plug-in installation hole 4131.

[0060] In some embodiments, the heating element 42 may include a top heating plate 421 and two side heating plates 422. The top heating plate 421 is attached to the plug-in top plate 413. The two side heating plates 422 are respectively connected to two opposite ends of the top heating plate 421. The two side heating plates 422 are respectively attached to a portion of the two plug-in side plates 412. By respectively arranging heating plates on the plug-in top plate 413 and the plug-in side plates 412, it is beneficial to increase the heating area and fully heat the slide bed plate 50.

[0061] See also Fig. 9 In some embodiments, the protective plate 43 may include a protective top plate 431 and two protective side plates 432. The protective top plate 431, the top heating plate 421 and the plug-in top plate 413 have substantially the same shape. The top heating plate 421 has substantially the same shape as the plug-in top plate 413, which is beneficial for the top heating plate 421 to heat the entire plug-in top plate 413; the protective top plate 431 has substantially the same shape as the top heating plate 421, which is beneficial for the protective top plate 431 to fully protect the top heating plate 421. In some embodiments, the protective top plate 431 is substantially the same size as the top heating plate 421.

[0062] In some embodiments, two protective side plates 432 are respectively connected to opposite ends of the protective top plate 431, and the two protective side plates 432 face the two side heating plates 422 respectively to protect the side heating plates 422. In some embodiments, the length of the protective side plates 432 is substantially the same as the length of the side heating plates 422, so that the protective side plates 432 can fully cover and protect the side heating plates 422, thereby preventing the side heating plates 422 from being worn out.

[0063] See also Fig.10 In some embodiments, the lead 47 of the heating element 42 is disposed at the end of a side heating plate 422, and a notch 4321 is formed at one end of the corresponding protective side plate 432 of the protective plate 43 for leading out the lead 47. Leading out the lead 47 facilitates powering the heating element 42. In some embodiments, the lead 47 of the heating element 42 can be connected to a power source in parallel.

[0064] See also Figure 8 and Fig.11 In some embodiments, the cross-section of the protection plate 43 and the heating element 42 is U-shaped.

[0065] See also Figure 2 In some embodiments, the length of the two plug-in side plates 412 is greater than the length of the slide bed plate 50 . When the slide bed plate 50 enters the plug-in cover 41 to be plugged with the plug-in cover 41 , the two plug-in side plates 412 may protrude from the slide bed plate 50 .

[0066] like Figure 2 and Fig.12 As shown, in some embodiments, the slide bed plate electric heating assembly 40 may further include a connecting plate 44, which can be closely attached to the slide bed plate 50 and detachably connected to the two plug-in side plates 412. Through the connection between the connecting plate 44 and the plug-in side plates 412, the two plug-in side plates 412 can clamp the slide bed plate 50.

[0067] See also Fig.12 In some embodiments, the connecting plate 44 may include a connecting main plate 441 and two connecting side plates 442. The connecting main plate 441 is tightly attached to the slide bed plate 50, and the two connecting side plates 442 are arranged in parallel on both sides of the connecting main plate 441. The two connecting side plates 442 can be detachably connected to the two plug-in side plates 412, respectively. In some embodiments, the cross section of the connecting plate 44 is U-shaped.

[0068] See also Figure 2 , Figure 5 as well as Fig.12 In some embodiments, the connecting side plate 442 is provided with a connecting mounting hole 4421, and correspondingly, the plug-in side plate 412 is provided with a connecting mounting hole 4121. The fastener 45 can pass through the connecting mounting hole 4421 on the connecting side plate 442 and the connecting mounting hole 4121 on the plug-in side plate 412 respectively to detachably connect the connecting plate 44 to the plug-in side plate 412.

[0069] The slide bed electric heating assembly 40 provided in the embodiment of the present application can effectively reduce heat loss and improve the snow and ice melting effect by heating the slide bed 50 of the turnout, effectively solving the problem of the turnout point rail 60 being blocked due to ice and snow on snowy days in winter, and is beneficial to ensuring the reliable operation of the turnout on snowy days in winter, thereby ensuring the safe and punctual operation of the railway.

[0070] The embodiment of the present application also provides a foldable electric heating assembly for heating the stock rail 20 of a railway turnout. Fig.13 and Fig.14 As shown, Fig.13 is a schematic diagram of the structure of the foldable electric heating assembly provided in an embodiment of the present application when folded, Fig.14 yes Fig.13 The schematic diagram of the structure of the foldable electric heating component when unfolded is shown in FIG. 1 , wherein the foldable electric heating component 10 comprises a plurality of rigid heating segments 101 and a plurality of flexible heating segments 102, and two adjacent rigid heating segments 101 are connected by a flexible heating segment 102, so that the two adjacent rigid heating segments 101 can be deformed by the flexible heating segment 102 to achieve folding. The foldable electric heating component 10 provided in the embodiment of the present application is folded by the deformation of the flexible heating segment 102, which facilitates the transportation of the foldable electric heating component 10.

[0071] All rigid heating segments 101 and all flexible heating segments 102 may be collectively referred to as heating segments.

[0072] In some embodiments, the heating section can be formed by a long strip of flexible heating element 11 and a plurality of protective tube sections 12 sleeved on the flexible heating element 11, with a gap between two adjacent protective tube sections 12. The portion of the flexible heating element 11 sleeved with the protective tube section 12 and the corresponding protective tube section 12 together form a rigid heating section 101; the portion of the flexible heating element 11 located between two adjacent protective tube sections 12 forms a flexible heating section 102. The foldable electric heating assembly 10 provided in the embodiment of the present application is provided with a long strip of flexible heating element 11, and a protective tube section 12 is sleeved on the flexible heating element 11 to form a rigid heating section 101 and a flexible heating section 102, and then folding is achieved through the deformation of the flexible heating section 102.

[0073] See also Fig.15 When installing the foldable electric heating assembly 10, the heating section of the foldable electric heating assembly 10 can be unfolded to install the heating section on the basic rail 20 of the turnout. In some embodiments, the basic rail 20 may include a rail head 23, a rail seat 21, and a rail waist connecting the rail head 23 and the rail seat 21. In some embodiments, the heating section of the foldable electric heating assembly 10 may be installed at the rail waist. In other embodiments, the heating section of the foldable electric heating assembly 10 may be installed at the rail seat 21.

[0074] In some embodiments, the flexible heating element 11 may be a flexible electric heating strip, which can generate heat after being energized to melt snow or ice on the turnout.

[0075] In some embodiments, the protection pipe section 12 may be a metal pipe. Since the metal pipe is provided to protect the flexible heating element 11, the flexible heating element 11 is not easily damaged.

[0076] In some embodiments, the protective tube segment 12 and the flexible heating element 11 can be fixedly connected to prevent the protective tube segment 12 from separating from the flexible heating element 11 and affecting the folding of the foldable electric heating assembly 10, while preventing the protective tube segment 12 from damaging the flexible heating element 11.

[0077] In some embodiments, the protective tube section 12 and the flexible heating element 11 can be fixedly connected by bonding. Fig.16 , which shows a cross-sectional schematic diagram of the rigid heating segment 101. In some embodiments, the foldable electric heating assembly 10 further includes an adhesive strip 123, and the protective tube segment 12 and the flexible heating element 11 are bonded via the adhesive strip 123. In some embodiments, the adhesive strip 123 can be a thermally conductive silicone strip.

[0078] like Fig.16 As shown, in some embodiments, two opposite sides of the cross section of the flexible heating element 11 may form a recessed portion 111, and the foldable electric heating assembly 10 further includes two adhesive strips, which are respectively disposed in the two recessed portions 111 to fix the protection tube section 12 to the flexible heating element 11. By disposing the adhesive strips in the recessed portions 111, the protection tube section 12 and the flexible heating element 11 can be firmly bonded, and the heat conduction effect of the protection tube section 12 and the flexible heating element 11 can be ensured.

[0079] See also Fig.16 In some embodiments, the protection tube section 12 may be flat to increase the contact area with the base rail 20 , which is beneficial to improving the heating effect of the flexible heating element 11 on the base rail 20 .

[0080] like Fig.17 As shown, it is a cross-sectional schematic diagram of the flexible heating segment 102 and the protective member 13 after being assembled. In some embodiments, the foldable electric heating component 10 may also include a plurality of protective members 13, each of which is detachably connected to the flexible heating segment 102 (i.e., the portion of the flexible heating element 11 exposed outside the protective tube segment 12), and is used to protect the flexible heating segment 102 when the foldable electric heating component 10 is installed on the base rail 20. By providing a detachable protective member 13 to protect the flexible heating segment 102, there is no need to install the protective member 13 during transportation, thereby enabling the folding of the foldable electric heating component 10; installing the protective member 13 during use can prevent the flexible heating segment 102 from being damaged, so as to ensure the heating effect of the flexible heating element 11 on the base rail 20.

[0081] See also Fig.16In some embodiments, the protective member 13 may form a groove 131, and the flexible heating section 102 may be embedded in the groove 131. When the foldable electric heating assembly 10 is installed on the waist of the base rail 20, the groove 131 of the protective member 13 faces the waist of the base rail 20. By embedding the flexible heating section 102 in the groove 131 of the protective member 13, the stability of the connection between the flexible heating member 11 and the protective member 13 can be improved while facilitating disassembly, thereby preventing the protective member 13 from being separated from the flexible heating member 11 in unexpected circumstances.

[0082] See also Fig.17 In some embodiments, the protective member 13 may form two oppositely disposed protrusions 132 at the notch of the slot 131, and each protrusion 132 may be embedded in a corresponding recess 111 of the flexible heating member 11. The cooperation between the protrusion 132 and the recess 111 makes the connection between the flexible heating member 11 and the protective member 13 more stable.

[0083] In some embodiments, the side of the flexible heating element 11 facing the base rail 20 protrudes from the protective element 13, that is, the flexible heating section 102 is partially embedded in the groove 131 instead of being fully embedded in the groove 131. When the foldable electric heating assembly 10 is assembled with the base rail 20, the side surface of the flexible heating element 11 facing the base rail 20 can be closer to the base rail 20, or even close to the base rail 20, so that it is more conducive for the flexible heating section 102 to heat the waist of the base rail 20.

[0084] See also Fig.13 and Fig.14 In some embodiments, the foldable electric heating assembly 10 may further include a power cord 14 and an electrical connector 15. The power cord 14 is used to connect the power source, and the electrical connector 15 is used to electrically connect the power cord 14 to the heating section or the flexible heating element 11. The power cord 14 and the electrical connector 15 are used to electrically connect the power source to the flexible heating element 11, so that the flexible heating element 11 can be powered on to heat the base rail 20.

[0085] In some embodiments, see Fig.15 The power line 14 can be introduced into the transformer box 30 and connected to the isolation transformer to ensure power safety.

[0086] In some embodiments, the electrical connector 15 is a one-piece piece.

[0087] The inventors of the present application have discovered that, for the foldable electric heating component 10, when a heating section fails, the heating section and the power cord 14 need to be replaced at the same time; and after the power cord 14 is introduced into the transformer box 30, in order to ensure the electrical sealing effect, the positions where the wires enter and exit the transformer box 30 are often potted, and in actual working conditions, the ground around the transformer box 30 is often required to be cured. When the foldable electric heating component 10 is replaced after potting and / or curing, the potting and / or curing treatment needs to be completely destroyed before it can be replaced, which is very inconvenient.

[0088] Therefore, in some embodiments, the electrical connector 15 may be a split component, so that the flexible heating element 11 and the power cord 14 can be separated by the split electrical connector 15, which is convenient for repairing and replacing the flexible heating element 11. When the flexible heating element 11 fails, the foldable electric heating assembly 10 provided in the embodiment of the present application only needs to disconnect the electrical connector 15 to replace the flexible heating element 11; and when replacing the flexible heating element 11, there is no need to replace the power cord 14, which is easy to operate.

[0089] At present, the commonly used heating elements and power cords are mostly formed in one piece. In order to adapt to different installation situations, the one-piece formed heating elements are often provided with longer power cords, the length of which is 10m or 15m. The longer power cords also bring many inconveniences during transportation. The foldable electric heating assembly 10 provided in the embodiment of the present application transforms the power cord 14 and the flexible heating element 11 into a split type through a split electrical connector 15. During transportation, the power cord 14 and the flexible heating element 11 can be transported separately, which is conducive to improving transportation efficiency and improving the inconvenience during transportation.

[0090] like Fig.18 As shown, it shows a partial structural schematic diagram of a foldable electric heating component 10 with a split electrical connector 15 provided in an embodiment of the present application. In some embodiments, the electrical connector 15 may include a first connector 151 and a second connector 152. Among them, the first connector 151 is electrically connected to the flexible heating element 11; the second connector 152 is electrically connected to the power cord 14, and the first connector 151 and the second connector 152 are electrically connected by plugging. The flexible heating element 11 and the power cord 14 can be quickly separated by plugging the first connector 151 and the second connector 152, which is convenient for maintenance and replacement of the flexible heating element 11. In some embodiments, a protective hose 141 can be provided at the portion where the power cord 14 is connected to the second connector 152.

[0091] In some embodiments, the first connector 151 may be one of a quick-connect plug and a socket, and correspondingly, the second connector 152 may be the other of a quick-connect plug and a socket.

[0092] In some embodiments, the first connector 151 may include a first body 1512 and a plug-in portion 1511 disposed on the first body 1512, and the second connector 152 may include a second body 1522 and a plug-in mating portion 1521 disposed on the second body 1522. The plug-in portion 1511 and the plug-in mating portion 1521 are plugged in and mated with each other to facilitate plugging and unplugging of the first connector 151 and the second connector 152. In some embodiments, the first connector 151 may be provided with a metal shell, which encloses the flexible heating element 11 to protect the flexible heating element 11.

[0093] like Fig.19 and Fig. 20 As shown, in some embodiments, the foldable electric heating assembly 10 may further include a fixing member 16, which is disposed on the rail seat 21 of the base rail 20 and is used to fix the electric connector 15. The fixing member 16 supports the electric connector 15 to prevent the first joint 151 and the second joint 152 from being separated during the heating process, so as to ensure that the heating section can heat the base rail 20.

[0094] In some embodiments, the protection tube segment 12 closest to the electrical connector 15 among the multiple protection tube segments 12 is connected to the electrical connector 15. For ease of description, the protection tube segment 12 closest to the electrical connector 15 among the multiple protection tube segments 12 can be referred to as the first protection tube segment 121, and the other protection tube segments 12 can be referred to as the second protection tube segment 122.

[0095] See also Fig.13 and Fig.14 In some embodiments, the first protection pipe section 121 includes a straight pipe section 1211 and a bent section 1212. The straight pipe section 1211 is used to be attached to the rail waist 22 of the base rail 20, and the bent section 1212 is used to enable the electrical connector 15 to deviate from the rail waist 22 to connect with the fixing member 16. By providing the straight pipe section 1211 and the bent section 1212, the flexible heating element 11 can be attached to the rail waist 22, and the fixing member 16 is convenient for fixing the electrical connector 15.

[0096] In some embodiments, the first protective tube section 121 may also include a first straight tube section 12111, which is connected to the electrical connector 15, and the bent section 1212 connects the first straight tube section 12111 and the straight tube section 1211, thereby facilitating the fixing of the electrical connector 15 by the fixing member 16.

[0097] In some embodiments, the bent section 1212 bends from the end of the straight section 1211 close to the electrical connector 15 in a direction away from the waist 22 of the base rail 20 so that the electrical connector 15 can deviate from the waist 22 to connect with the fixing member 16 .

[0098] See also Fig.19 and Fig. 20In some embodiments, the fixing member 16 may include a receiving portion 161 and a clamping portion. The receiving portion 161 may be used to receive the electrical connector 15, and the clamping portion may be used to clamp with one end of the rail seat 21. In some embodiments, the fixing member 16 may include two receiving portions 161, which are used to receive the first connector 151 and the second connector 152, respectively.

[0099] In some embodiments, the receiving portion 161 forms a slot 1611 , and the first connector 151 and the second connector 152 can enter the slot 1611 .

[0100] In some embodiments, the first body 1512 of the first connector 151 further forms a recessed portion 15121, which can enter the slot 1611 of one receiving portion 161, thereby limiting the significant movement of the first body 1512 along the slot 1611 relative to the second body 1522. A step surface is formed between the second body 1522 and the plug-in mating portion 1521, which cooperates with the slot 1611 of another receiving portion 161, thereby limiting the significant movement of the second body 1522 along the slot 1611 relative to the first body 1512. This arrangement can prevent the first connector 151 and the second connector 152 from being separated in the event of strong vibration caused by a vehicle passing by.

[0101] In some embodiments, the fixing member 16 may further include an installation portion 166, which is located below the snap-fit ​​portion. The foldable electric heating component 10 may further include a snap-fit ​​portion 17 and a fastening component 18, the snap-fit ​​portion 17 is snap-fitted to the other end of the rail seat 21, and the fastening component 18 fixes the installation portion and the snap-fit ​​portion 17 from below the rail seat 21.

[0102] In some embodiments, the mounting portion 166 includes a mounting hole, and the snap-fit ​​portion 17 is provided with a mating mounting hole. The fastening assembly 18 can fix the mounting portion 166 and the snap-fit ​​portion 17 together through the mounting hole of the mounting portion 166 and the mating mounting hole of the snap-fit ​​portion 17 .

[0103] In some embodiments, the snap-fitting portion 17 includes a first snap-fitting plate 171, a second snap-fitting plate 172, and a third snap-fitting plate 173. The first snap-fitting plate 171 and the third snap-fitting plate 173 are connected by the second snap-fitting plate 172. The first snap-fitting plate 171 and the third snap-fitting plate 173 are respectively used to conform to the upper and lower surfaces of the rail seat 21, and the second snap-fitting plate 172 conforms to the side of the rail seat 21. The matching mounting hole is formed in the third snap-fitting plate 173. The length of the third snap-fitting plate 173 is greater than that of the first snap-fitting plate 171, so as to enhance the stability of the connection between the snap-fitting portion 17 and the rail seat 21.

[0104] In some embodiments, the receiving portion 161 may be a plate body, and a slot 1611 is formed on the plate body and is open in the direction of the rail seat 21. The fixing member 16 may also include: a connecting plate 162, which is used to connect the two receiving portions 161 with the clamping portion. In some embodiments, the clamping portion includes a first clamping plate 163, a second clamping plate 164, and a third clamping plate 165. The first clamping plate 163 is connected to the connecting plate 162, and the first clamping plate 163 and the third clamping plate 165 are connected by the second clamping plate 164. The first clamping plate 163 and the third clamping plate 165 are used to match the upper and lower surfaces of the rail seat 21 respectively, and the second clamping plate 164 is matched with the side surface of the rail seat 21.

[0105] The connecting plate 162, the first clamping plate 163, and the second clamping plate 164 can be integrally formed. The third clamping plate 165 and the mounting portion 166 can be integrally formed. The second clamping plate 164 can be welded to the mounting portion 166, and a through hole is also formed at the position of the second clamping plate 164 corresponding to the mounting hole to increase the strength of the fixing member 16. Through the above arrangement, the connection between the fixing member 16 and the rail seat 21 is more stable, which is further conducive to preventing the first joint 151 and the second joint 152 from being separated when a vehicle passes by and causes strong vibration.

[0106] See also Fig. 20 In some embodiments, the fastening assembly 18 may include a fastener 181 and a fastening fitting 182. The fastener 181 may pass through the mounting hole and the matching mounting hole and be connected to the fastening fitting 182 to achieve a fixed connection between the snap-fit ​​portion and the snap-fit ​​portion 17.

[0107] In some embodiments, the fastening fitting 182 may be disposed on a side of the clamping portion away from the rail seat 21; in other embodiments, the fastening fitting 182 may be disposed on a side of the clamping fitting portion 17 away from the rail seat 21. In some embodiments, the fastener 181 and the fastening fitting 182 may be threadedly connected. The fastener 181 may be a bolt, and the fastening fitting 182 may be a nut.

[0108] like Fig.21 As shown, it shows a cross-sectional schematic diagram of the foldable electric heating component 10 provided by the embodiment of the present application after being assembled with the base rail 20 using the connecting piece 19. In some embodiments, the foldable electric heating component 10 may also include a plurality of connecting pieces 19, which are used to fix the protection tube segment 12 or the protection member 13 to the base rail 20. In other words, the connecting piece 19 is used to fix the heating segment to the base rail 20. By fixing the heating segment to the base rail 20 through the connecting piece 19, the flexible heating element 11 can be fixed to the base rail 20, so as to ensure the heating effect of the flexible heating element 11 on the base rail 20.

[0109] In some embodiments, when the heating section is fixed to the base rail 20 by a plurality of connecting members 19 , the surface of the flexible heating member 11 exposed to the outside that faces the base rail 20 is in close contact with the base rail 20 .

[0110] See also Fig.21 In some embodiments, each connector 19 can be formed by bending an elastic metal strip. In some embodiments, the connector 19 formed by bending the metal strip can include a pressing portion 191, an extending portion 192, a connecting portion 193 and two clamping portions 194.

[0111] The two clamping parts 194 are respectively used to clamp with the two side ends of the rail seat 21. The clamping part 191 is used to clamp the heating section to the rail waist 22. The connecting part 193 extends from the clamping part 191 toward the end of the rail seat 21 to connect with the clamping part 194 on the same side. The connecting part 193 extends from the bottom of the rail seat 21 to the other end of the rail seat 21 to connect with the clamping part 194 on the other side. The end of the connecting part 193 connected to the clamping part 194 is in contact with the lower surface of the rail seat 21, and the end of the extending part 192 connected to the clamping part 194 is in contact with the upper surface of the rail seat 21. Through such an arrangement, the connecting member 19 can ensure that the heating section is in thermal contact with the rail waist 22 as much as possible.

[0112] In some embodiments, the connection portion 193 may be a V-shaped structure, and the distance between the center of the connection portion 193 and the lower surface of the rail seat 21 is greater than the thickness of the end of the rail seat 21. When the connection portion 193 is subjected to an upward force, the pressing portion 191 and the clamping portion 194 are deformed, so that the pressing portion 191 can press the heating section against the base rail 20.

[0113] In some embodiments, the extension portion 192 includes a first extension portion 1921 and a second extension portion 1922, the first extension portion 1921 extends in a contour with the portion where the rail waist 22 and the rail seat 21 meet, and the second extension portion 1922 connects with the first extension portion 1921 and extends in a straight line to the clamping portion 194. The extension portion 192 configured in this way is conducive to the clamping portion 191 clamping the heating section.

[0114] The embodiment of the present application also provides an electric heating assembly for a railway turnout, comprising a foldable electric heating assembly 10 of any embodiment of the present application and a slide bed plate electric heating assembly 40 of any embodiment of the present application. The foldable electric heating assembly 10 is used to heat the stock rail of the railway turnout. The slide bed plate electric heating assembly 40 is used to heat the slide bed plate 50 of the railway turnout.

[0115] Regarding the embodiments of the present application, it should also be noted that, in the absence of conflict, the embodiments of the present application and the features therein can be combined with each other to obtain new embodiments.

[0116] The above are only specific implementation methods of the present application, but the protection scope of the present application is not limited thereto. The protection scope of the present application shall be based on the protection scope of the claims.

Claims

1. An electric heating assembly for a railway turnout slide plate, used for heating the slide plate of a railway turnout, characterized in that: The electric heating assembly comprises: A plug-in cover having an opening, wherein the opening is configured to allow the slide bed plate to enter the plug-in cover so as to be plugged with the plug-in cover, and the plug-in cover can be thermally connected to the slide bed plate; and A heating element is thermally connected to the plug-in housing.

2. The electric heating assembly according to claim 1, characterized in that: The plug-in housing comprises two plug-in side plates arranged opposite to each other and a plug-in top plate connected between the two plug-in side plates, and the space between the two plug-in side plates forms the opening; The plug-in top plate faces the top surface of the slide bed plate to cover a portion of the top surface of the slide bed plate and is thermally connected to the portion of the top surface; The two plug-in side plates face the two side surfaces of the slide bed plate and are heat-conductingly connected to the two side surfaces.

3. The electric heating assembly according to claim 2, characterized in that: The top surface of the slide bed is formed with a raised portion for the pointed rail to slide. A groove for making way for the protrusion is provided on one side of the plug-in top plate facing the protrusion.

4. The electric heating assembly according to claim 3, characterized in that: The slide bed is fixed to the turnout base by fasteners. The plug-in top plate is fixed to the slide bed plate by the fasteners.

5. The electric heating assembly according to claim 4, characterized in that: The slide bed plate has a slide bed mounting hole, so that the slide bed plate can be fixed to the turnout base by the fastener passing through the slide bed mounting hole; The plug-in top plate is provided with a plug-in mounting hole, so that the plug-in cover shell and the slide bed plate are fixed by the fastener passing through the plug-in mounting hole and the slide bed mounting hole in sequence; The plug-in installation hole is communicated with the slot.

6. The electric heating assembly according to claim 5, characterized in that: The heating element is a flexible sheet structure, and the heating element is attached to at least part of the plug-in side plate and at least part of the plug-in top plate of the plug-in cover on the outer side of the plug-in cover.

7. The electric heating assembly according to claim 6, characterized in that: Also includes: A protection plate is arranged on the outer side of the heating element and is used to protect the heating element.

8. The electric heating assembly according to claim 7, characterized in that: The heating element and the protection plate form a clearance groove at the part facing the plug-in installation hole, so that the fastener can be directly pressed on the plug-in cover shell.

9. The electric heating assembly according to claim 7, characterized in that: The heating element comprises a top heating plate and two side heating plates, wherein the top heating plate is attached to the plug-in top plate, the two side heating plates are respectively connected to two opposite ends of the top heating plate, and the two side heating plates are respectively attached to a part of the two plug-in side plates; The protection plate includes a protection top plate and two protection side plates. The protective top plate, the top heating plate and the plug-in top plate have substantially the same shape; The two protection side plates are respectively connected to the two opposite ends of the protection top plate, and the two protection side plates face the two side heating plates respectively; The lead wire of the heating element is arranged at the end of one of the side heating plates, A notch is formed at one end of the protection plate corresponding to the protection side plate for leading out the lead wire.

10. An electric heating assembly for a railway turnout, characterized in that: include: The electric heating assembly according to any one of claims 1 to 9, used for heating the slide bed plate of the railway turnout; A foldable electric heating assembly is used to heat the stock rail of the railway turnout.

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