A welding auxiliary device for a snow melting and heating structure of a railway track

Abstract

The present invention relates to the technical field of railway track snow melting, and specifically to a welding auxiliary device for a railway track snow melting heating structure, which includes an equipment frame and a bottom plate fixedly installed on the upper end surface of the equipment frame. A support cross plate is fixedly installed on the upper end surface of the bottom plate through an L-shaped bracket arranged, and a clamping mechanism is arranged on the support cross plate. The fixation of the turnout snow melting heating strip is completed by adopting an integrated operation model of clamping, supporting and locking. 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 heating element and the heating strip during welding. Secondly, the locking provided by the triangular structure provides additional support and reinforcement, facilitates the subsequent welding of the connection between the heating element and the heating strip, and enhances the stability of the entire device. Finally, the overall performance and long-term operation reliability of the turnout snow melting heating strip are improved.

Description

Technical Field

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

[0002] The turnout snow melting heating strip (as Figure 9 shown) is an electric heating device used to prevent snow accumulation and freezing on railway turnouts. It mainly consists of cables, heating elements, U-shaped heating strips, etc. It melts the snow in the turnout area through electric heating to ensure the normal operation of the turnout. When manufacturing the turnout snow melting heating strip, in order to ensure good electrical connection between the heating element and the heating strip, welding treatment needs to be carried out on the connection part of the heating element and the heating strip. Therefore, before welding, the heating element and the heating strip need to be clamped and fixed to ensure the accuracy of welding and the overall performance and long-term operation stability of the turnout snow melting heating strip.

[0003] Currently, there are the following disadvantages when fixing the turnout snow melting heating strip before welding: 1. When clamping and fixing the heating element and the heating strip, multiple sets of clamping components are usually required to clamp and fix each part of the heating element and the U-shaped heating strip one by one, and each set of clamping components needs to be operated separately to achieve the fixing effect. And each part needs more setting time and fine adjustment for individual clamping, making the whole welding process more complex and consuming more time, thus affecting the production efficiency of the turnout snow melting heating strip; 2. After clamping and fixing the heating element and the heating strip, the clamping components for fixing the heating element and the clamping components for fixing the heating strip are not combined and locked, resulting in independent movement of the two sets of clamping components under the action of high temperature and welding pressure, thereby reducing the overall stability of the equipment, and causing inaccurate alignment between the heating element and the heating strip, affecting the welding quality, resulting in problems such as reduced welding strength at the connection or welding defects at the connection, and further affecting the overall performance and long-term operation stability of the turnout snow melting heating strip. Summary of the Invention

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

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

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

[0007] A fixing mechanism cooperating with the clamping mechanism is provided on the bottom plate; the fixing mechanism includes a fixing portion provided on the bottom plate and used for cooperatively limiting and fixing the heating element with the clamping portion, a driving portion and a limiting portion for limiting the arc portion of the heating strip are provided on the bottom plate, and a triangular plate is provided on the driving portion.

[0008] The clamping mechanism, the support mechanism and the fixing mechanism cooperate with each other to synchronously limit, fix and support the heating element and the heating strip integrally, and the triangular plate provides a triangular structure lock for the support portion and the fixing portion 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 portion includes first sliding grooves symmetrically penetrating through the upper end surface of the support cross plate from left to right, arc-shaped support rods fixedly installed on the support cross plate corresponding to the first sliding grooves one by one and symmetrically front and back, a bearing plate fixedly installed at the end of the arc-shaped support rod far from the support cross plate, a limiting convex block is provided on the bearing plate, and first sliders symmetrically arranged from left to right are slidably installed in the first sliding grooves.

[0010] As a preferred technical solution of the present invention, the clamping portion includes a limiting guide rail fixedly installed on the upper end surface of the bottom plate through a device seat, a bidirectional screw is rotatably installed in the limiting guide rail through a bearing, a motor with an output end fixedly connected to the bidirectional screw is fixedly installed on the bottom plate, cooperating columns symmetrically arranged from left to right and threadedly connected to the bidirectional screw are slidably installed in the limiting guide rail, a first clamping block is fixedly installed at the upper end of the first slider, the upper end of the right cooperating column is fixedly connected to the rightmost first clamping block, the upper end of the left cooperating column is fixedly connected to the leftmost first clamping block, and limiting vertical plates are fixedly installed at the upper ends of the two first clamping blocks on the same first sliding groove.

[0011] As a preferred technical solution of the present invention, the cooperating portion includes first slide rails fixedly installed on the lower end surface of the support cross plate corresponding to the first sliding grooves one by one, second sliders are slidably installed in the first slide rails, a hinge rod is hinged to the lower end surface of the first slider, and the lower ends of the two hinge rods below the same first sliding groove are jointly hinged to the rear end surface of the corresponding second slider through a pin shaft arranged.

[0012] As a preferred technical solution of the present invention, the support portion includes a first support plate fixedly installed above the bottom plate and directly behind the first slideway on the right side through an L-shaped bracket provided. A first through groove is formed through the upper end surface of the first support plate. Symmetric third sliders are slidably installed on the upper end surface of the first support plate. The upper end surface of the third slider consists of a front flat section, a middle inclined section, and a rear flat section. A limiting vertical plate is fixedly installed on the upper end surface of the third slider. Insertion rods and insertion slots that cooperate with each other are respectively provided on the side walls of the third sliders close to each other.

[0013] As a preferred technical solution of the present invention, the connection portion includes semi-circular vertical rods fixedly installed on the lower end surface of the third slider and located within the first through groove. The symmetric semi-circular vertical rods on the left and right form a complete cylinder. Connecting rods are fixedly installed on the side walls away from each other of the two first clamping blocks on the first slideway on the right side. The connecting rods are fixedly connected to the corresponding third sliders.

[0014] As a preferred technical solution of the present invention, the fixing portion includes a second support plate fixedly installed above the bottom plate and directly behind the first support plate through an L-shaped bracket provided. A second through groove is formed through the upper end surface of the second support plate. A placement plate for carrying a heating element is fixedly installed at the center of the upper end surface of the second support plate. Second clamping blocks symmetric about the placement plate are slidably installed on the upper end surface of the second support plate. A positioning rod located within the second through groove is fixedly installed on the lower end surface of the second clamping block. 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 through an L-shaped bracket provided. An arc-shaped limiting block is provided on the upper end of the limiting plate.

[0016] As a preferred technical solution of the present invention, the driving portion includes electric guide rails fixedly installed above the bottom plate and symmetric about the placement plate through L-shaped brackets provided. The symmetric electric guide rails on the left and right are located between the second support plate and the first support plate. A triangular plate is fixedly installed on the moving ends of the symmetric electric guide rails on the left and right. Lock holes are formed through the triangular parts of the upper end surface of the triangular plate. The lock hole at the front side corresponds to the symmetric semi-circular vertical rods, and the lock hole at the rear side corresponds to the positioning rod.

[0017] Compared with the prior art, the present invention has the following beneficial effects: 1. For the welding auxiliary device of the railway track snow melting and heating structure, through the combined use of the clamping mechanism, the supporting mechanism and the fixing mechanism, an integrated operation model of clamping, supporting and locking is adopted to fix the turnout snow melting heating strip. First, the integrated limit fixing and supporting simplifies the preparatory work before welding, reduces the complexity of the operation and improves the work efficiency, and ensures the stability of the connection during welding. Secondly, the triangular structure locking provides additional support for subsequent welding, enhances the stability of the whole device, and finally improves the overall performance and long-term operation reliability of the turnout snow melting heating strip.

[0018] 2. For the welding auxiliary device of the railway track snow melting and heating structure, through the combined use of the clamping mechanism and the supporting mechanism, the heating element and the heating strip are synchronously subjected to integrated limit fixing and support, ensuring the precise alignment of the heating element and the heating strip before welding, and at the same time ensuring that the positions of the heating element and the heating strip remain stable 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. For the welding auxiliary device of the railway track snow melting and heating structure, through the fixing mechanism provided, the triangular plate provides triangular stable locking for the parts required to clamp the heating element and the heating strip, provides additional support and strengthening for the connection between the two, so as to assist in fixing the connection between the heating element and the heating strip, improve the stability of the whole device, and during the welding process, the high temperature will cause thermal deformation of the heating element and the heating strip, and 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 is a three-dimensional structural schematic diagram of the present invention.

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

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

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

[0024] Figure 5 is a top view structural schematic diagram of the present invention.

[0025] Figure 6 is Figure 5 the sectional view taken along A-A in

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

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

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

[0029] In the figure: 1, equipment rack; 2, bottom plate; 3, support cross plate; 4, clamping mechanism; 41, bearing part; 411, first slideway; 412, arc-shaped support rod; 413, bearing plate; 414, first slider; 415, limit projection; 42, clamping part; 421, limit guide rail; 422, matching column; 423, first clamping block; 424, limit vertical plate; 43, matching part; 431, first slide rail; 432, second slider; 433, articulated rod; 5, support mechanism; 51, support part; 511, first support plate; 512, third slider; 52, connecting part; 521, connecting rod; 522, semi-circular 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, triangular plate. Detailed implementation manners

[0030] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0031] Please refer to Figure 1 , a welding auxiliary device for a railway track snow melting heating structure, including an equipment rack 1 and a bottom plate 2 fixedly installed on the upper end surface of the equipment rack 1. A support cross plate 3 is fixedly installed on the upper end surface of the bottom plate 2 through an L-shaped bracket provided, and a clamping mechanism 4 is arranged on the support cross plate 3; the clamping mechanism 4 includes a bearing part 41 arranged on the support cross plate 3 and used for bearing the horizontal parts on both sides of the turnout snow melting heating strip, and a clamping part 42 and a matching part 43 for synchronously clamping and fixing the horizontal parts on both sides are arranged on the bearing part 41.

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

[0033] Please refer to Figure 1 and Figure 3 , a fixing mechanism 6 cooperating with the clamping mechanism 4 is provided on the bottom plate 2; the fixing mechanism 6 includes a fixing portion 61 provided on the bottom plate 2 and used for cooperating with the clamping portion 42 to limit and fix the heating element, a driving portion 63 is provided on the bottom plate 2, and a limiting portion 62 for limiting the arc portion of the heating strip is provided, and a triangular plate 7 is provided on the driving portion 63.

[0034] The clamping mechanism 4, the support mechanism 5 and the fixing mechanism 6 cooperate with each other to synchronously limit, fix and support the heating element and the heating strip integrally, and the triangular plate 7 provides a triangular structure lock for the support portion 51 and the fixing portion 61 to assist in fixing the connection part of the heating element and the heating strip.

[0035] Please refer to Figure 1 , Figure 2 , Figure 4 and Figure 6 , the bearing portion 41 includes first sliding grooves 411 symmetrically and longitudinally opened on the upper end surface of the support cross plate 3, arc-shaped support rods 412 symmetrically and transversely fixed on the support cross plate 3 and corresponding to the first sliding grooves 411 one by one, a bearing plate 413 is fixedly installed at the end of the arc-shaped support rod 412 away from the support cross plate 3, a limiting convex block 415 is provided on the bearing plate 413, and left and right symmetric first sliders 414 are slidably installed in the first sliding grooves 411.

[0036] Please refer to Figure 1 , Figure 2 and Figure 4 , the clamping portion 42 includes a limiting guide rail 421 fixedly installed on the upper end surface of the bottom plate 2 through a device 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 bottom plate 2, left and right symmetric matching columns 422 threadedly connected to the bidirectional screw are slidably installed in the limiting guide rail 421, a first clamping block 423 is fixedly installed at the upper end of the first slider 414, the upper end of the right matching column 422 is fixedly connected to the rightmost first clamping block 423, the upper end of the left matching column 422 is fixedly connected to the leftmost first clamping block 423, and limiting vertical plates 424 are fixedly installed at the upper ends of the two first clamping blocks 423 on the same first sliding groove 411.

[0037] Please refer to Figure 1 , Figure 4 and Figure 6, the mating part 43 includes first slide rails 431 fixedly installed on the lower end surface of the support cross plate 3 and corresponding to the first slide ways 411 one by one. A second slider 432 is slidably installed in the first slide rail 431. The lower end surface of the first slider 414 is hinged with a hinge rod 433. The lower ends of the two hinge rods 433 below the same first slide way 411 are jointly hinged to the rear end surface of the corresponding second slider 432 through a set pin shaft.

[0038] Please refer to Figure 1 , Figure 2 and Figure 3 , the limiting part 62 includes a limiting plate 621 fixedly installed above the bottom plate 2 through a set L-shaped bracket. An arc-shaped limiting block 622 is arranged at the upper end of the limiting plate 621.

[0039] During specific operation, before welding, when the heating element and the heating strip need to be fixed, first align the heating element and the heating strip and insert them into the designated positions. Subsequently, 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. Then place the horizontal parts on both sides of the heating strip on the bearing plates 413 on both sides at the same time, so that the bearing plates 413 support the heating strip, and the limiting bumps 415 limit the horizontal parts on both sides of the heating strip. Subsequently, place the heating element in the fixing mechanism 6, and thus the placement of the heating element and the heating strip is completed.

[0040] Subsequently, start the motor to rotate the bidirectional screw rod, so as to synchronously move the two matching columns 422 on both sides closer, so that the leftmost first clamping block 423 and the rightmost first clamping block 423 move closer synchronously. Taking the right first slide way 411 as an example, at this time, the first slider 414 on the right side in the first slide way 411 will move leftward, and through the hinge rod 433, the corresponding second slider 432 will be pushed downward, so that the included angle between the two hinge rods 433 decreases, thereby synchronously moving the left first slider 414 rightward, so that the two first clamping blocks 423 in the same first slide way 411 move closer synchronously until the limiting vertical plates 424 on both sides clamp and fix the horizontal part of the heating strip, and the other first slide way 411 will also clamp and fix the other side of the heating strip, and thus the support and fixation of the horizontal parts on both sides of the turnout snow melting heating strip are completed.

[0041] Please refer to Figure 1 , Figure 3 , Figure 5 , Figure 7 and Figure 8, the supporting part 51 includes a first supporting plate 511 fixedly installed above the bottom plate 2 through a provided L-shaped bracket and located directly behind the first slideway 411 on the right side. A first through groove is formed through the upper end surface of the first supporting plate 511. Symmetric third sliders 512 are slidably installed on the upper end surface of the first supporting plate 511. The upper end surface of the third slider 512 consists of a front flat section, a middle inclined section, and a rear flat section. A limiting vertical plate 424 is fixedly installed on the upper end surface of the third slider 512. Insert rods and slots that are cooperatively inserted are respectively arranged on the side walls of the third sliders 512 close to each other.

[0042] Please refer to Figure 1 , Figure 3 , Figure 7 and Figure 8 , the connecting part 52 includes semi-circular vertical rods 522 fixedly installed on the lower end surface of the third slider 512 and located within the first through groove. The symmetric semi-circular vertical rods 522 form a complete cylinder. Connecting rods 521 are fixedly installed on the side walls of the two first clamping blocks 423 on the first slideway 411 on the right side away from each other. The connecting rod 521 is fixedly connected to the corresponding third slider 512.

[0043] Please refer to Figure 1 , Figure 3 , Figure 5 , Figure 7 and Figure 8 , the fixing part 61 includes a second supporting plate 611 fixedly installed above the bottom plate 2 through a provided L-shaped bracket and located directly behind the first supporting plate 511. A second through groove is formed through the upper end surface of the second supporting plate 611. A placement plate 612 for carrying a heating element is fixedly installed at the center of the upper end surface of the second supporting plate 611. Second clamping blocks 613 symmetric about the placement plate 612 are slidably installed on the upper end surface of the second supporting plate 611. A positioning rod 614 located within the second through groove is fixedly installed on the lower end surface of the second clamping block 613. 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 synchronously placed on the placement plate 612. During the process of the clamping mechanism 4 clamping the horizontal part of the heating strip, the symmetric third sliders 512 will be synchronously brought closer through the two connecting rods 521, and at the same time, the symmetric second clamping blocks 613 will be synchronously brought closer, so that the third sliders 512 on both sides will drive the corresponding limiting vertical plates 424 to simultaneously support and clamp the inclined part of the heating strip. During this process, the insert rods and slots provide guidance for the third sliders 512 on both sides, and the two semi-circular 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 as to simultaneously perform integrated limit fixation and support on the heating element and the heating strip, ensure the precise alignment of the heating element and the heating strip before welding, and at the same time ensure that the positions of the heating element and the heating strip remain stable during the welding process.

[0046] Please refer to Figure 1 and Figure 3 , the driving part 63 includes electric guide rails 631 which are fixedly installed above the bottom plate 2 through the provided L-shaped brackets and are symmetric about the placement plate 612. The symmetric electric guide rails 631 on the left and right are located between the second support plate 611 and the first support plate 511. Triangular plates 7 are fixedly installed on the moving ends of the symmetric electric guide rails 631 on the left and right. Lock holes are respectively formed through the triangular parts on the upper end surfaces of the triangular plates 7. The lock hole located at the front side corresponds to the symmetric semi-circular vertical rods 522 on the left and right, and the lock hole located at the rear side corresponds to the positioning rod 614.

[0047] During specific operation, after the clamping mechanism 4 and the supporting mechanism 5 cooperate to complete the fixation of the heating element and the heating strip, the electric guide rails 631 on both sides are simultaneously started to drive the triangular plates 7 to rise, so that the positioning rod 614 and the cylinder formed by the two semi-circular vertical rods 522 are simultaneously inserted into the corresponding lock holes, thereby locking the second clamping blocks 613 on both sides and the third sliding blocks 512 on both sides, so as to provide triangular stable locking for the components clamping the heating element and the heating strip, provide additional support and reinforcement for the connection part between the two, assist in fixing the connection part of the heating element and the heating strip, improve the stability of the whole device, and then the connection part of the heating element and the heating strip can be welded.

[0048] Although the embodiments of the present invention have been shown and described, for those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principle and spirit of the present invention. 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).

Images