A welding auxiliary device for railway track snow melting heating structure

Abstract

The present invention relates to the technical field of railway track snow melting, specifically to a railway track snow melting heating structure welding auxiliary device, including an equipment frame and a base plate fixedly installed on the upper end face of the equipment frame, wherein the upper end face of the base plate is fixedly installed with a supporting cross plate by an L-shaped bracket, and a clamping mechanism is provided on the supporting cross plate. The fixing of the turnout snow melting heating strip is completed by adopting an integrated operation model of clamping, supporting and locking. Firstly, the integrated limit fixing and support simplifies the preparation work before welding, reduces the complexity of operation and improves work efficiency, and ensures the stability of the heating element and the heating strip during welding. Secondly, the triangular structure locking is used to provide additional support and reinforcement, which facilitates the subsequent welding of the heating element and the heating strip connection, and enhances the stability of the entire device, and finally improves the overall performance and long-term operation reliability of the turnout snow melting heating strip.

Description

Technical Field

[0001] The invention relates to the technical field of railway track snow melting, in particular to a railway track snow melting heating structure welding auxiliary device. Background Art

[0002] Turnout snow melting heating strip (such as Fig. 9 (as shown) is an electric heating device used to prevent snow from freezing on railway turnouts. It is mainly composed of cables, heating elements and U-shaped heating strips. It melts the snow in the turnout area by electric heating to ensure the normal operation of the turnout. In order to ensure that the heating element and the heating strip have good electrical connection when producing the turnout snow-melting heating strip, the connection between the heating element and the heating strip needs to be welded. Therefore, the heating element and the heating strip need to be clamped and fixed before welding to ensure the accuracy of welding and ensure the overall performance and long-term stability of the turnout snow-melting heating strip.

[0003] At present, the following disadvantages exist when fixing the turnout snow-melting heating strips before welding: 1. When clamping and fixing the heating elements and the heating strips, it is usually necessary to use multiple sets of clamping assemblies to clamp and fix each part of the heating elements and the U-shaped heating strips one by one, and each set of clamping assemblies needs to be operated separately to achieve the fixing effect, and each part needs more setting time and fine adjustment to clamp separately, which makes the whole welding process more complicated and time-consuming, thereby affecting the production efficiency of the turnout snow-melting heating strips; 2. After the heating elements and the heating strips are clamped and fixed, the clamping assemblies for fixing the heating elements and the clamping assemblies for fixing the heating strips are not combined and locked, so that the two sets of clamping assemblies move independently under the action of high temperature and welding pressure, thereby reducing the overall stability of the equipment, and causing inaccurate alignment between the heating elements and the heating strips, affecting the welding quality, thereby causing problems such as reduced welding strength at the joint or welding defects at the joint, thereby affecting the overall performance and long-term operation stability of the turnout snow-melting heating strips. Summary of the invention

[0004] In order to solve the above-mentioned technical problems, the present invention provides a railway track snow-melting heating structure welding auxiliary device, which is achieved by the following specific technical means: a railway track snow-melting heating structure welding auxiliary device, comprising an equipment frame and a base plate fixedly installed on the upper end surface of the equipment frame, the upper end surface of the base plate is fixedly installed with a supporting cross plate by an L-shaped bracket, and a clamping mechanism is arranged on the supporting cross plate.

[0005] The clamping mechanism includes a bearing part arranged on the supporting cross plate and used to bear the horizontal parts on both sides of the turnout snow melting heating strip, and the bearing part is provided with a clamping part and a matching part cooperating with the clamping part to synchronously clamp and fix the horizontal parts on both sides.

[0006] A supporting mechanism cooperating with the clamping mechanism is arranged on the bottom plate; the supporting mechanism includes a supporting part arranged on the bottom plate and used to support and clamp the inclined part of the heating strip, and a connecting part cooperating with the clamping part to provide power for the supporting part is arranged on the supporting part.

[0007] A fixing mechanism cooperating with the clamping mechanism is arranged on the bottom plate; the fixing mechanism includes a fixing part arranged on the bottom plate and used to cooperate with the clamping part to limit and fix the heating element, a driving part and a limiting part used to limit the arc-shaped part of the heating strip are arranged on the bottom plate, and a triangular plate is arranged on the driving part.

[0008] The clamping mechanism, the supporting mechanism and the fixing mechanism cooperate with each other to synchronously implement integrated limiting fixation and support for the heating element and the heating strip, and the triangular plate provides a triangular structure locking for the supporting part and the fixing part to assist in fixing the connection between the heating element and the heating strip.

[0009] As a preferred technical solution of the present invention, the bearing part includes a first slideway which is symmetrically installed on the upper end surface of the supporting horizontal plate, and an arc-shaped support rod which corresponds to the first slideway one by one and is symmetrical front and back is fixedly installed on the supporting horizontal plate. A bearing plate is fixedly installed on one end of the arc-shaped support rod away from the supporting horizontal plate, and a limiting protrusion is arranged on the bearing plate. A first sliding block which is symmetrical on the left and right is slidably installed in the first slideway.

[0010] As a preferred technical solution of the present invention, the clamping part includes a limiting guide rail fixedly installed on the upper end surface of the base plate through an equipment seat, a bidirectional screw is rotatably installed in the limiting guide rail through a bearing, a motor whose output end is fixedly connected to the bidirectional screw is fixedly installed on the base plate, and a matching column that is symmetrical on the left and right and threadedly connected to the bidirectional screw is slidably installed in the limiting guide rail. A first clamping block is fixedly installed on the upper end of the first sliding block, the upper end of the matching column on the right is fixedly connected to the first clamping block on the far right, and the upper end of the matching column on the left is fixedly connected to the first clamping block on the far left, and the upper ends of the two first clamping blocks on the same first slide are fixedly installed with a limiting vertical plate.

[0011] As a preferred technical solution of the present invention, the matching part includes a first slide rail fixedly installed on the lower end surface of the supporting cross plate and corresponding one-to-one to the first slide track, a second slider is slidably installed in the first slide rail, a hinged rod is hinged on the lower end surface of the first slider, and the lower ends of the two hinged rods under the same first slide track are hinged to the rear end surface of the corresponding second slider through a set pin shaft.

[0012] As a preferred technical solution of the present invention, the support part includes a first support plate fixedly installed above the base plate by an L-shaped bracket and located directly behind the first slide on the right side. A first through groove is penetrated through the upper surface of the first support plate, and a third slider symmetrically installed on the upper surface of the first support plate is slidably installed. The upper surface of the third slider is composed of a front plane, a middle inclined surface and a rear plane. A limiting vertical plate is fixedly installed on the upper surface of the third slider, and a side wall of the third slider close to each other is respectively provided with a plug rod and a slot that cooperate with each other.

[0013] As a preferred technical solution of the present invention, the connecting part includes a semicircular vertical rod fixedly installed on the lower end surface of the third slider and located in the first through groove, the left and right symmetrical semicircular vertical rods form a complete cylinder, and the side walls of the two first clamping blocks located on the right first slide track that are away from each other are fixedly installed with connecting rods, and the connecting rods are fixedly connected to the corresponding third slider.

[0014] As a preferred technical solution of the present invention, the fixing part includes a second support plate fixedly installed above the base plate and directly behind the first support plate by an L-shaped bracket, a second through groove is penetrated through the upper surface of the second support plate, a placement plate for carrying a heating element is fixedly installed at the center of the upper surface of the second support plate, a second clamping block symmetrically installed with respect to the placement plate is slidably installed on the upper surface of the second support plate, a positioning rod located in the second through groove is fixedly installed on the lower end surface of the second clamping block, and the connecting rod is fixedly connected to the corresponding second clamping block.

[0015] As a preferred technical solution of the present invention, the limiting portion includes a limiting plate fixedly installed above the bottom plate by an L-shaped bracket, and an arc-shaped limiting block is arranged on the upper end of the limiting plate.

[0016] As a preferred technical solution of the present invention, the driving part includes an electric guide rail which is fixedly installed above the base plate by an L-shaped bracket and is symmetrical about the placement plate. The symmetrical electric guide rail is located between the second support plate and the first support plate. The movable ends of the symmetrical electric guide rails are commonly fixed with a triangular plate. Lock holes are penetrated at the triangles on the upper end faces of the triangular plates. The lock holes on the front side correspond to the symmetrical semicircular vertical poles, and the lock holes on the rear side correspond to the positioning poles.

[0017] Compared with the prior art, the present invention has the following beneficial effects: 1. The railway track snow-melting heating structure welding auxiliary device, through the coordinated use of the clamping mechanism, the supporting mechanism and the fixing mechanism, adopts an integrated operation model of clamping, supporting and locking to complete the fixation of the turnout snow-melting heating strip. Firstly, the integrated limit fixation and support simplifies the preparation work before welding, reduces the complexity of operation and improves work efficiency, and ensures the stability of the connection during welding. Secondly, the triangular structure locking is used to provide additional support to facilitate subsequent welding and enhance the stability of the entire device, ultimately improving the overall performance and long-term operation reliability of the turnout snow-melting heating strip.

[0018] 2. The railway track snow-melting heating structure welding auxiliary device, through the coordinated use of the clamping mechanism and the supporting mechanism, simultaneously implements integrated limiting fixation and support for the heating element and the heating strip, ensuring the precise alignment of the heating element and the heating strip before welding, and at the same time ensuring that the position of the heating element and the heating strip is always in a stable state during the welding process, thereby improving the uniformity and strength of the welded joint, and enhancing the overall performance and long-term operation stability of the turnout snow-melting heating strip.

[0019] 3. The railway track snow-melting heating structure welding auxiliary device, through the setting of the fixing mechanism, enables the triangular plate to provide a triangular and stable locking for the required parts of the clamping heating element and the heating strip, and provide additional support and reinforcement for the connection between the two to assist in fixing the connection between the heating element and the heating strip, thereby improving the stability of the entire device. In addition, the high temperature during the welding process will cause the heating element and the heating strip to undergo thermal deformation. The locking of the triangular plate can better disperse and offset the deformation force and maintain the stability of the connection. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention.

[0021] Figure 2 It is a schematic diagram of the three-dimensional structure of the clamping mechanism of the present invention.

[0022] Figure 3 It is a bottom-up stereoscopic structural schematic diagram of the supporting mechanism and the fixing mechanism of the present invention.

[0023] Figure 4 It is a partial cross-sectional three-dimensional structural schematic diagram of the matching part of the present invention.

[0024] Figure 5 It is a schematic diagram of the top structure of the present invention.

[0025] Figure 6 for Figure 5 Sectional view of AA.

[0026] Figure 7It is a partial three-dimensional structural schematic diagram of the supporting mechanism, fixing mechanism and triangular plate of the present invention.

[0027] Figure 8 It is a bottom-up stereoscopic structural schematic diagram of the support mechanism of the present invention.

[0028] Fig. 9 This is a schematic diagram of the three-dimensional structure of the turnout snow-melting heating strip.

[0029] In the figure: 1, equipment frame; 2, bottom plate; 3, supporting horizontal plate; 4, clamping mechanism; 41, bearing part; 411, first slideway; 412, arc support rod; 413, bearing plate; 414, first slide block; 415, limiting convex block; 42, clamping part; 421, limiting guide rail; 422, matching column; 423, first clamping block; 424, limiting vertical plate; 43, matching part; 431, first slide rail; 432, second slide block; 433, hinged rod ; 5. Support mechanism; 51. Support part; 511. First support plate; 512. Third slider; 52. Connecting part; 521. Connecting rod; 522. Semicircular vertical rod; 6. Fixing mechanism; 61. Fixing part; 611. Second support plate; 612. Placement plate; 613. Second clamping block; 614. Positioning rod; 62. Limiting part; 621. Limiting plate; 622. Arc-shaped limiting block; 63. Driving part; 631. Electric guide rail; 7. Triangle plate. DETAILED DESCRIPTION

[0030] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0031] See also Figure 1 A railway track snow-melting heating structure welding auxiliary device comprises an equipment frame 1 and a bottom plate 2 fixedly mounted on the upper end surface of the equipment frame 1, a supporting cross plate 3 is fixedly mounted on the upper end surface of the bottom plate 2 through an L-shaped bracket, and a clamping mechanism 4 is arranged on the supporting cross plate 3; the clamping mechanism 4 comprises a bearing part 41 arranged on the supporting cross plate 3 and used for bearing the horizontal parts on both sides of the turnout snow-melting heating strip, a clamping part 42 is arranged on the bearing part 41, and a matching part 43 which cooperates with the clamping part 42 to synchronously clamp and fix the horizontal parts on both sides.

[0032] See also Figure 1A supporting mechanism 5 cooperating with the clamping mechanism 4 is provided on the bottom plate 2; the supporting mechanism 5 includes a supporting portion 51 arranged on the bottom plate 2 and used to support and clamp the inclined portion of the heating strip, and a connecting portion 52 cooperating with the clamping portion 42 to provide power for the supporting portion 51 is provided on the supporting portion 51.

[0033] See also Figure 1 and Figure 3 A fixing mechanism 6 cooperating with the clamping mechanism 4 is arranged on the bottom plate 2; the fixing mechanism 6 includes a fixing portion 61 arranged on the bottom plate 2 and used to cooperate with the clamping portion 42 to limit and fix the heating element, a driving portion 63 and a limiting portion 62 for limiting the arc-shaped part of the heating strip are arranged on the bottom plate 2, and a triangular plate 7 is arranged on the driving portion 63.

[0034] The clamping mechanism 4, the supporting mechanism 5 and the fixing mechanism 6 cooperate with each other to synchronously implement integrated limiting fixation and support for the heating element and the heating strip, and the triangular plate 7 provides a triangular structure locking for the supporting part 51 and the fixing part 61 to assist in fixing the connection between the heating element and the heating strip.

[0035] See also Figure 1 , Figure 2 , Figure 4 and Figure 6 The bearing part 41 includes a first slide 411 which is symmetrically penetrated through the upper end surface of the supporting horizontal plate 3, and an arc-shaped support rod 412 which corresponds to the first slide 411 one by one and is symmetrical front to back is fixedly installed on the supporting horizontal plate 3. A bearing plate 413 is fixedly installed on one end of the arc-shaped support rod 412 away from the supporting horizontal plate 3, and a limiting protrusion 415 is provided on the bearing plate 413. A first sliding block 414 which is symmetrical left to right is slidably installed in the first slide 411.

[0036] See also Figure 1 , Figure 2 and Figure 4 The clamping part 42 includes a limiting guide rail 421 fixedly installed on the upper end surface of the base plate 2 through an equipment seat, a bidirectional screw is rotatably installed in the limiting guide rail 421 through a bearing, a motor with an output end fixedly connected to the bidirectional screw is fixedly installed on the base plate 2, a matching column 422 that is symmetrical on the left and right and threadedly connected to the bidirectional screw is slidably installed in the limiting guide rail 421, a first clamping block 423 is fixedly installed on the upper end of the first sliding block 414, the upper end of the matching column 422 on the right is fixedly connected to the first clamping block 423 on the far right, the upper end of the matching column 422 on the left is fixedly connected to the first clamping block 423 on the far left, and the upper ends of the two first clamping blocks 423 on the same first slideway 411 are fixedly installed with a limiting vertical plate 424.

[0037] See also Figure 1 , Figure 4 and Figure 6The matching part 43 includes a first slide rail 431 fixedly installed on the lower end surface of the supporting cross plate 3 and corresponding to the first slide 411 one by one. A second slider 432 is slidably installed in the first slide rail 431. A hinged rod 433 is hinged on the lower end surface of the first slider 414. The lower ends of the two hinged rods 433 under the same first slide 411 are hinged to the rear end surface of the corresponding second slider 432 through a set pin shaft.

[0038] See also Figure 1 , Figure 2 and Figure 3 The limiting portion 62 includes a limiting plate 621 fixedly mounted above the bottom plate 2 by an L-shaped bracket, and an arc-shaped limiting block 622 is disposed at the upper end of the limiting plate 621 .

[0039] During specific work, when it is necessary to fix the heating element and the heating strip before welding, first align the heating element and the heating strip and plug them into the specified position, then place the arc-shaped part of the heating strip on the limiting plate 621, so that the arc-shaped limiting block 622 squeezes and limits the arc-shaped part of the heating strip, and then place the horizontal parts on both sides of the heating strip on the supporting plates 413 on both sides at the same time, so that the supporting plates 413 support the heating strip, and the limiting protrusions 415 limit the horizontal parts on both sides of the heating strip, and then place the heating element in the fixing mechanism 6, so as to complete the placement of the heating element and the heating strip.

[0040] Then, the motor is started to rotate the bidirectional screw, thereby synchronously moving the matching columns 422 on both sides closer together, so that the first clamping block 423 on the far left and the first clamping block 423 on the far right are synchronously moved closer together. Taking the first slide 411 on the right as an example, at this time, the first slider 414 on the right side of the first slide 411 will move to the left, and push the corresponding second slider 432 downward through the hinge rod 433, so that the angle between the two hinge rods 433 is reduced, thereby synchronously moving the first slider 414 on the left side to the right, so that the two first clamping blocks 423 in the same first slide 411 are synchronously moved closer together, until the limiting vertical plates 424 on both sides clamp and fix the horizontal part of the heating strip, and the first slide 411 on the other side will also clamp and fix the other side of the heating strip, thereby completing the support and fixation of the horizontal parts of the turnout snow-melting heating strip on both sides.

[0041] See also Figure 1 , Figure 3 , Figure 5 , Figure 7 and Figure 8The support portion 51 includes a first support plate 511 fixedly installed above the bottom plate 2 through an L-shaped bracket and located directly behind the first slide 411 on the right side. A first through groove is penetrated through the upper end surface of the first support plate 511. A left-right symmetrical third slider 512 is slidably installed on the upper end surface of the first support plate 511. The upper end surface of the third slider 512 is composed of a front plane, a middle inclined surface and a rear plane. A limiting vertical plate 424 is fixedly installed on the upper end surface of the third slider 512. The side walls of the third slider 512 that are close to each other are respectively provided with plug rods and slots that cooperate with each other.

[0042] See also Figure 1 , Figure 3 , Figure 7 and Figure 8 The connecting part 52 includes a semicircular vertical rod 522 fixedly installed on the lower end surface of the third slider 512 and located in the first through groove. The left-right symmetrical semicircular vertical rods 522 form a complete cylinder. The side walls of the two first clamping blocks 423 located on the right first slide 411 away from each other are fixedly installed with connecting rods 521, and the connecting rods 521 are fixedly connected to the corresponding third slider 512.

[0043] See also Figure 1 , Figure 3 , Figure 5 , Figure 7 and Figure 8 The fixing portion 61 includes a second support plate 611 fixedly installed above the bottom plate 2 and located directly behind the first support plate 511 through an L-shaped bracket, a second through groove is penetrated through the upper end surface of the second support plate 611, a placement plate 612 for carrying the heating element is fixedly installed at the center of the upper end surface of the second support plate 611, a second clamping block 613 symmetrical with respect to the placement plate 612 is slidably installed on the upper end surface of the second support plate 611, a positioning rod 614 located in the second through groove is fixedly installed on the lower end surface of the second clamping block 613, and the connecting rod 521 is fixedly connected to the corresponding second clamping block 613.

[0044] During specific operation, before the clamping mechanism 4 limits and fixes the heating strip, the heating element will be placed on the placement plate 612 synchronously. In the process of the clamping mechanism 4 clamping the horizontal part of the heating strip, the left-right symmetrical third slider 512 will be brought closer synchronously through the two connecting rods 521, and the left-right symmetrical second clamping block 613 will be brought closer synchronously, so that the third sliders 512 on both sides can synchronously support and clamp the inclined part of the heating strip with the corresponding limiting vertical plates 424. In this process, the insertion rod and the slot provide guidance for the third sliders 512 on both sides, and the two semicircular vertical rods 522 below form a complete cylinder.

[0045] The second clamping block 613 will simultaneously limit and fix the heating element on the placement plate 612, so that the heating element and the heating strip can be simultaneously implemented with integrated limit fixation and support, ensuring the precise alignment of the heating element and the heating strip before welding, and ensuring that the position of the heating element and the heating strip is always stable during the welding process.

[0046] See also Figure 1 and Figure 3 The driving part 63 includes an electric guide rail 631 which is fixedly installed above the base plate 2 through an L-shaped bracket and is symmetrical about the placement plate 612. The symmetrical electric guide rail 631 is located between the second support plate 611 and the first support plate 511. The movable ends of the symmetrical electric guide rails 631 are commonly fixed with a triangular plate 7. The triangular parts of the upper end surface of the triangular plate 7 are penetrated with locking holes. The locking holes on the front side correspond to the symmetrical semicircular uprights 522, and the locking holes on the rear side correspond to the positioning rod 614.

[0047] During specific operation, after the clamping mechanism 4 and the supporting mechanism 5 cooperate to fix the heating element and the heating strip, the electric guide rails 631 on both sides are started at the same time to make it rise with the triangular plate 7, so that the positioning rod 614 and the cylinder composed of two semicircular vertical rods 522 are inserted into the corresponding lock holes at the same time, so as to lock the second clamping blocks 613 on both sides and the third sliders 512 on both sides, thereby providing a triangular stable lock for the components clamping the heating element and the heating strip, providing additional support and reinforcement for the connection between the two, so as to assist in fixing the connection between the heating element and the heating strip, and improve the stability of the entire device, and then the connection between the heating element and the heating strip can be welded.

[0048] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A railway track snow melting heating structure welding auxiliary device, comprising an equipment frame (1) and a bottom plate (2) fixedly mounted on the upper end surface of the equipment frame (1), characterized in that: A supporting transverse plate (3) is fixedly mounted on the upper end surface of the bottom plate (2) via an L-shaped bracket, and a clamping mechanism (4) is provided on the supporting transverse plate (3); The clamping mechanism (4) comprises a bearing part (41) arranged on the supporting horizontal plate (3) and used to bear the horizontal parts on both sides of the turnout snow melting heating strip; the bearing part (41) is provided with a clamping part (42) and a matching part (43) which cooperates with the clamping part (42) to synchronously clamp and fix the horizontal parts on both sides; A supporting mechanism (5) cooperating with the clamping mechanism (4) is provided on the bottom plate (2); The support mechanism (5) comprises a support portion (51) arranged on the bottom plate (2) and used to support and clamp the inclined portion of the heating strip, and the support portion (51) is provided with a connection portion (52) that cooperates with the clamping portion (42) to provide power for the support portion (51); A fixing mechanism (6) cooperating with the clamping mechanism (4) is provided on the bottom plate (2); The fixing mechanism (6) comprises a fixing portion (61) arranged on the bottom plate (2) and used to cooperate with the clamping portion (42) to limit the position of the heating element, a driving portion (63) and a limiting portion (62) used to limit the arc-shaped portion of the heating strip are arranged on the bottom plate (2), and a triangular plate (7) is arranged on the driving portion (63); The clamping mechanism (4), the supporting mechanism (5) and the fixing mechanism (6) cooperate with each other to synchronously implement integrated limiting fixation and support for the heating element and the heating strip, and the triangular plate (7) provides a triangular structure locking for the supporting part (51) and the fixing part (61) to assist in fixing the connection between the heating element and the heating strip.

2. The railway track snow melting heating structure welding auxiliary device according to claim 1, characterized in that: The bearing portion (41) comprises a first slideway (411) which is symmetrically arranged on the upper end surface of the supporting transverse plate (3). An arc-shaped support rod (412) which corresponds to the first slideway (411) and is symmetrical in front and back is fixedly installed on the supporting transverse plate (3). A bearing plate (413) is fixedly installed on one end of the arc-shaped support rod (412) away from the supporting transverse plate (3). A limiting protrusion (415) is arranged on the bearing plate (413). A first sliding block (414) which is symmetrical in front and back is slidably installed in the first slideway (411).

3. A railway track snow melting heating structure welding auxiliary device according to claim 2, characterized in that: The clamping part (42) comprises a limiting guide rail (421) fixedly mounted on the upper end surface of the base plate (2) through an equipment seat, a bidirectional screw is rotatably mounted in the limiting guide rail (421) through a bearing, a motor whose output end is fixedly connected to the bidirectional screw is fixedly mounted on the base plate (2), a matching column (422) which is symmetrical on both sides and threadedly connected to the bidirectional screw is slidably mounted in the limiting guide rail (421), a first clamping block (423) is fixedly mounted on the upper end of the first sliding block (414), the upper end of the matching column (422) on the right side is fixedly connected to the first clamping block (423) on the far right, and the upper end of the matching column (422) on the left side is fixedly connected to the first clamping block (423) on the far left.

4. The railway track snow melting heating structure welding auxiliary device according to claim 3 is characterized by: The upper ends of the two first clamping blocks (423) on the same first slideway (411) are both fixedly mounted with a limiting vertical plate (424).

5. The railway track snow melting heating structure welding auxiliary device according to claim 3 is characterized by: The matching portion (43) comprises a first slide rail (431) fixedly mounted on the lower end surface of the supporting cross plate (3) and corresponding one to one with the first slideway (411); a second slider (432) is slidably mounted in the first slide rail (431); a hinged rod (433) is hingedly mounted on the lower end surface of the first slider (414); and the lower ends of the two hinged rods (433) under the same first slideway (411) are hingedly mounted on the rear end surface of the corresponding second slider (432) via a set pin shaft.

6. The railway track snow melting heating structure welding auxiliary device according to claim 3, characterized in that: The support portion (51) comprises a first support plate (511) fixedly mounted above the bottom plate (2) by means of an L-shaped bracket and located directly behind the first slideway (411) on the right side; a first through slot is formed through the upper end surface of the first support plate (511); a third sliding block (512) symmetrically mounted on the upper end surface of the first support plate (511) is slidably mounted; the upper end surface of the third sliding block (512) is composed of a front section plane, a middle section inclined surface and a rear section plane; a limiting vertical plate (424) is fixedly mounted on the upper end surface of the third sliding block (512); and a plug rod and a slot that are mutually matched and plugged are respectively arranged on the side walls of the third sliding block (512) that are close to each other.

7. The railway track snow melting heating structure welding auxiliary device according to claim 6, characterized in that: The connecting portion (52) comprises a semicircular vertical rod (522) fixedly mounted on the lower end surface of the third sliding block (512) and located in the first through groove, the semicircular vertical rods (522) being symmetrical on both sides forming a complete cylinder, and connecting rods (521) are fixedly mounted on one side wall of the two first clamping blocks (423) located on the right first slideway (411) away from each other, and the connecting rods (521) are fixedly connected to the corresponding third sliding block (512).

8. The railway track snow melting heating structure welding auxiliary device according to claim 7, characterized in that: The fixing portion (61) comprises a second support plate (611) fixedly mounted above the bottom plate (2) and located directly behind the first support plate (511) by means of an L-shaped bracket, a second through slot being penetrated through the upper end surface of the second support plate (611), a placement plate (612) for carrying a heating element being fixedly mounted at the center of the upper end surface of the second support plate (611), a second clamping block (613) symmetrically mounted on the upper end surface of the second support plate (611) being slidably mounted with respect to the placement plate (612), a positioning rod (614) located in the second through slot being fixedly mounted on the lower end surface of the second clamping block (613), and a connecting rod (521) being fixedly connected to the corresponding second clamping block (613).

9. The railway track snow melting heating structure welding auxiliary device according to claim 1, characterized in that: The limiting portion (62) comprises a limiting plate (621) fixedly mounted above the bottom plate (2) via an L-shaped bracket, and an arc-shaped limiting block (622) is arranged at the upper end of the limiting plate (621).

10. The railway track snow melting heating structure welding auxiliary device according to claim 8, characterized in that: The driving part (63) comprises an electric guide rail (631) fixedly mounted above the bottom plate (2) by means of an L-shaped bracket and symmetrical with respect to the placement plate (612); the symmetrical electric guide rail (631) is located between the second support plate (611) and the first support plate (511); a triangular plate (7) is fixedly mounted on the movable ends of the symmetrical electric guide rail (631); locking holes are provided through the triangular parts of the upper end surface of the triangular plate (7); the locking holes located on the front side correspond to the symmetrical semicircular uprights (522); and the locking holes located on the rear side correspond to the positioning rods (614).

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