Overlap removing cutter structure for turnout welding

Abstract

The utility model belongs to the technical field of railway engineering mechanical equipment manufacturing, and particularly relates to an overlap pushing knife structure for turnout welding. The device comprises an upper overlap pushing knife assembly and a rail bottom overlap pushing knife, a cutting edge is formed in the inner side of the upper beading removing cutter assembly; pull rod locking notches are formed in the two ends of the top of the upper overlap pushing knife assembly; a cutting edge opening is formed in the top of the rail bottom beading pushing knife; each of the two ends of the rail bottom beading pushing knife is rotationally connected with a beading pushing knife pull rod; after being rotated towards the direction close to the upper portion tumor pushing knife assembly, the tumor pushing knife pull rod is clamped into the pull rod locking notch of the upper portion tumor pushing knife assembly, and then the tumor pushing knife pull rod is fixed into the pull rod locking notch through a fixing piece; according to the invention, the overlap pushing knife can be used under the condition that the space gap between the steel rails is narrow, so that the field turnout flash welding operation is more convenient, and the efficiency is higher.

Description

Technical Field

[0001] This application belongs to the field of railway engineering machinery and equipment manufacturing technology, specifically relating to a pusher knife structure for turnout welding. Background Technology

[0002] With the rapid development of high-speed rail, the safety and reliability of railways are increasing due to the continuous improvement in the welding quality of rails. Currently, rail welding methods are mainly divided into three categories: flash butt welding, gas pressure welding, and aluminothermic welding. Due to the advantages of flash butt welding, such as the safety, reliability, and stable welding of the joints, it has gradually been applied in the field of turnout welding. However, when welding turnouts, the narrow space at the turnout location makes it impossible to use conventional push-button cutters in the confined space, which complicates the flash butt welding operation on the turnout. Therefore, there is an urgent need for a new push-button cutter structure that can be used by mobile flash butt rail welding machines to weld turnouts, making the flash butt welding operation on the turnout more convenient.

[0003] For example, a Chinese patent, application number 202121260371.5, application date June 7, 2021, entitled "A Combined Track-Type Tubal Pushing Knife," describes a combined track-type pushing knife as follows: It includes a left blade, a right blade, a top blade, and a bottom blade. The bottom of the right blade is rotatably connected to one end of the bottom blade via a connecting mechanism. The two ends of the top blade are rotatably connected to the left and right blades respectively via connecting mechanisms. Blades are installed on the inner sides of the left, right, top, and bottom blades. The outer wall of the blade is equipped with several outwardly protruding locking blocks. The connecting mechanism includes a connecting rod. The outer wall of the connecting rod is provided with external threads near both ends. The two ends of the connecting rod are threaded with threaded rings. A sleeve is installed on the middle of the outer side of the left blade, right blade, top blade, and bottom blade. A locking screw is slidably connected inside the sleeve. One end of each locking screw is tightly welded to the inner left blade, right blade, top blade, and bottom blade, respectively. The other end passes through the sleeve and is threaded with a locking nut.

[0004] The aforementioned patent uses a connecting mechanism to facilitate the flexible rotation of the left and right blades, allowing the device to be unfolded and stored for easy maintenance and cleaning. However, relying solely on the connecting mechanism for flexible rotation is insufficient for turnout welding. Due to the narrow space between the turnout and the turnout, the bottom blade cannot enter the space, preventing it from assembling with the left, right, and top blades. Therefore, the push-cut blade structure of the aforementioned patent cannot be used to perform welding operations on the turnout. Summary of the Invention

[0005] In order to solve the problems existing in the prior art, this application provides a pusher knife structure for turnout welding that makes turnout welding more convenient.

[0006] To achieve the above-mentioned technical effects, the technical solution of this application is as follows:

[0007] A pusher blade structure for turnout welding includes an upper pusher blade assembly and a rail bottom pusher blade. The upper pusher blade assembly has a cutting edge on its inner side. Both ends of the upper pusher blade assembly have locking notches for connecting rods. The rail bottom pusher blade has a cutting edge for the top. Each end of the rail bottom pusher blade is rotatably connected to a pusher blade connecting rod. After the pusher blade connecting rod rotates towards the upper pusher blade assembly, it engages with the locking notch of the upper pusher blade assembly, and is then fixed in the locking notch by a fastener.

[0008] Furthermore, the upper pusher knife assembly includes a rail-top pusher knife, a left rail waist pusher knife, and a right rail waist pusher knife; the left rail waist pusher knife and the right rail waist pusher knife are symmetrically arranged at both ends of the rail-top pusher knife; the bottom of the rail-top pusher knife is provided with a rail-top blade edge, the right side of the left rail waist pusher knife is provided with a rail waist blade edge, and the left side of the right rail waist pusher knife is provided with a rail waist blade edge.

[0009] Furthermore, two locking notches for the tie rods are respectively opened at both ends of the rail top pusher; both ends of the rail top pusher are provided with rail top connecting pin holes that extend along the width direction of the rail top pusher; the rail top connecting pin holes at both ends of the rail top pusher are connected to the locking notches for the tie rods; the top of the left rail waist pusher and the right rail waist pusher are each provided with a rail waist connecting pin hole for connecting with the rail top pusher.

[0010] Furthermore, the rail waist connecting pin hole of the left rail waist pusher is connected to one side of the rail top pusher through a rail waist connecting pin, and rotates outward with the rail waist connecting pin as the rotation center; the rail waist connecting pin hole of the right rail waist pusher is connected to the other side of the rail top pusher through another rail waist connecting pin, and rotates outward with the rail waist connecting pin as the rotation center.

[0011] Furthermore, the bottom of the left rail waist pusher knife is provided with a rail waist knife positioning boss, and the rail waist knife positioning boss is connected to the rail bottom knife positioning stop at one end of the rail bottom pusher knife; the bottom of the right rail waist pusher knife is provided with a rail waist knife positioning boss, and the rail waist knife positioning boss is connected to the rail bottom knife positioning stop at the other end of the rail bottom pusher knife.

[0012] Furthermore, the top two ends of the rail bottom pusher are respectively provided with rail bottom pusher connecting pin holes that extend through the width direction of the rail bottom pusher; the top two ends of the rail bottom pusher are respectively provided with rail bottom pusher pull rod notches that open into the rail bottom pusher; the top two ends of the rail bottom pusher are respectively provided with rail bottom pusher positioning stops that open into the rail bottom pusher; the rail bottom pusher connecting pin holes, rail bottom pusher pull rod notches, and rail bottom pusher positioning stops are interconnected; the top of the rail bottom pusher is provided with an inwardly recessed rail bottom pusher cutting edge, and the rail bottom pusher cutting edge is located between the rail bottom pusher positioning stops at both ends of the top of the rail bottom pusher.

[0013] Furthermore, the rail bottom knife pull rod notch at one end of the rail bottom pusher is rotatably connected to the connecting pin hole of the pusher pull rod via a pull rod connecting pin, and the connecting pin hole is located at one end of the pusher pull rod; the rail bottom knife pull rod notch at the other end of the rail bottom pusher is rotatably connected to the connecting pin hole of another pusher pull rod via another pull rod connecting pin, and the connecting pin hole is located at one end of the pusher pull rod; the other ends of both pusher pull rods rotate about their respective pull rod connecting pins as the rotation center in a direction closer to or further away from the side of the upper pusher knife assembly.

[0014] Furthermore, the fastener is a locking threaded sleeve; there are two locking threaded sleeves; the other end of the two pusher knife pull rods is provided with a pull rod locking thread; the two pusher knife pull rods are each connected to a locking threaded sleeve through the pull rod locking thread; the bottom of the two locking threaded sleeves fits against the top of the rail top pusher knife.

[0015] Furthermore, the locking threaded sleeve includes a threaded sleeve handle and a threaded sleeve body; the threaded sleeve handle is located at the top of the threaded sleeve body, and the bottom of the threaded sleeve body has a threaded hole with threads.

[0016] Furthermore, both the right and left rail waist-mounted tumescent knife are equipped with weight-reducing holes to reduce their weight; a rail-top knife handle is provided on the top of the rail-top tumescent knife.

[0017] Based on the above technical solution, the beneficial effects of this application are as follows:

[0018] 1. The upper pusher knife assembly, rail bottom pusher knife, pusher knife tie rod and fixing parts used in this utility model enable the upper pusher knife assembly and rail bottom pusher knife to be fastened and separated in the narrow space between the rails, realizing the use of the pusher knife even in the case of narrow space between the rails, making the on-site turnout flash welding operation more convenient and more efficient.

[0019] 2. The upper pusher knife assembly used in this utility model includes a rail top pusher knife, a left rail waist pusher knife, and a right rail waist pusher knife; the left rail waist pusher knife and the right rail waist pusher knife are respectively set at both ends of the rail bottom pusher knife. Both the left rail waist pusher knife and the right rail waist pusher knife can rotate outward, and both the left rail waist pusher knife and the right rail waist pusher knife are connected to the rail top pusher knife through the rail waist connecting pin, which makes the rotation angle easy to control and makes it easier to place the upper pusher knife assembly on the rail to be welded, preventing damage to adjacent rails.

[0020] 3. The bottom ends of the left and right rail waist pusher blades of this utility model are provided with rail waist blade positioning bosses that match the rail bottom blade positioning stop of the rail bottom pusher blade. This avoids positional deviation when the bottom pusher blade is attached to the bottom of the left and right rail waist pusher blades during the combination of the rail bottom pusher blade and the pusher blade assembly, ensuring the pushing effect during the pushing operation and preventing damage to the rail during the pushing operation.

[0021] 4. This utility model uses a pull rod locking thread and a locking thread sleeve to lock and fix the pusher knife pull rod on the pull rod locking notch. Through the locking thread and locking thread sleeve, the technical effect of disassembling and reassembling the upper pusher knife assembly and the rail bottom pusher knife at any time is achieved. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the overall structure of this utility model.

[0023] Figure 2 This is a schematic diagram of the structure of the rail-mounted pusher blade.

[0024] Figure 3 This is a schematic diagram of the left-rail waist-pushing scalpel.

[0025] Figure 4 This is a schematic diagram of the structure of the rail bottom pusher.

[0026] Figure 5 This is a schematic diagram of the locking threaded sleeve.

[0027] Figure 6 This is a schematic diagram of the structure of the tube-pulling knife pull rod.

[0028] Figure 7 This is a schematic diagram of the left-rail waist-pushing knife and the right-rail waist-pushing knife rotating outwards.

[0029] Figure 8 This is a schematic diagram showing the separation of the bottom pusher knife and the upper pusher knife assembly.

[0030] Figure 9 This is a schematic diagram of the assembly of the bottom-mounted pusher knife and the upper pusher knife assembly.

[0031] In the attached diagram: 1-rail top pusher; 2-right rail web pusher; 3-left rail web pusher; 4-rail bottom pusher; 5-rail web connecting pin; 6-locking threaded sleeve; 7-pusher pull rod; 8-pull rod connecting pin; 9-rail to be welded; 10-both rails; 101-rail top knife handle; 102-rail top connecting pin hole; 103-rail top knife cutting edge; 104-pull rod locking notch; 301-rail Waist connecting pin hole; 302-rail waist knife cutting edge; 303-rail waist knife positioning boss; 304-rail waist knife weight reduction hole; 401-rail bottom knife connecting pin hole; 402-rail bottom knife cutting edge; 403-rail bottom knife positioning stop; 404-rail bottom knife pull rod notch; 601-threaded sleeve handle; 602-threaded hole; 603-threaded sleeve body; 701-pull rod locking thread; 702-pull rod connecting pin hole. Detailed Implementation

[0032] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are some embodiments of this application, but not all embodiments.

[0033] Example 1

[0034] like Figure 1 As shown, a pusher blade structure for turnout welding includes an upper pusher blade assembly and a rail bottom pusher blade 4. The upper pusher blade assembly has a cutting edge on its inner side for removing protruding portions from the top outer surface and side outer surface of the rail to be welded (9). The upper pusher blade assembly has locking notches 104 at both ends of its top. The rail bottom pusher blade 4 has a rail bottom cutting edge 402 on its top for removing protruding portions from the bottom outer surface of the rail to be welded (9). Each end of the rail bottom pusher blade 4 is rotatably connected to a pusher blade lever 7, and the two levers 7 can rotate towards or away from the side of the upper pusher blade assembly. When this invention is needed, the upper pusher blade assembly is placed on the rail to be welded (9). The pusher rod 7 passes through the gap between the upper pusher assembly and the two side rails 10. After rotating towards the upper pusher assembly, the pusher rod 7 is engaged in the rod locking notch 104 of the upper pusher assembly. Then, the pusher rod 7 is fixed in the rod locking notch 104 by the fastener, thus completing the assembly of the upper pusher assembly and the rail bottom pusher 4. After the invention stops working, the fastener is removed and the pusher rod 7 is rotated away from the upper pusher assembly. One end of the pusher rod 7 leaves the rod locking notch 104, and then the pusher rod 7 leaves the gap between the upper pusher assembly and the two side rails 10, thus separating the upper pusher assembly and the rail bottom pusher 4.

[0035] The fastener can be a cylindrical threaded cap with a threaded hole. A thread is provided on one end of the pusher rod 7 that is inserted into the rod locking notch 104. The cylindrical threaded cap is connected to the pusher rod 7 via the thread, and the bottom of the cylindrical threaded cap is in contact with the top of the pusher rod 1 on the rail top. This allows the pusher rod 7 to be fixed in the rod locking notch 104 by the fastener. Alternatively, the fastener can be a fixing sleeve with a hole at the bottom, and a first threaded hole is provided on the side of the fixing sleeve; a second threaded hole is provided on one end of the pusher rod 7 that is inserted into the rod locking notch 104. When the fixed sleeve is fitted through the bottom opening onto one end of the pusher rod 7 that is engaged in the rod locking notch 104, the first threaded hole and the second threaded hole are connected. The first threaded hole and the second threaded hole are connected to the fixed sleeve and the end of the pusher rod 7 that is engaged in the rod locking notch 104 by screws, and the bottom surface of the fixed sleeve is in contact with the top of the pusher rod 1 on the rail top. Thus, the pusher rod 7 can be fixed in the rod locking notch 104 by the fastener. The shape of the fastener can be a cube, cuboid, cylinder, etc., and the shape of the fastener is not limited here.

[0036] Example 2

[0037] like Figure 1 As shown, a pusher blade structure for turnout welding includes an upper pusher blade assembly and a rail bottom pusher blade 4. The upper pusher blade assembly has a cutting edge on its inner side for removing protruding portions from the top outer surface and side outer surface of the rail to be welded (9). The upper pusher blade assembly has locking notches 104 at both ends of its top. The rail bottom pusher blade 4 has a rail bottom cutting edge 402 on its top for removing protruding portions from the bottom outer surface of the rail to be welded (9). Each end of the rail bottom pusher blade 4 is connected to a pusher blade lever 7. The two pusher rods 7 are dynamically connected and can rotate towards or away from the side of the upper pusher assembly. When this invention is needed, the upper pusher assembly is placed on the rail 9 to be welded, and the pusher rods 7 pass through the gap between the upper pusher assembly and the two side rails 10. After rotating towards the upper pusher assembly, the pusher rods 7 are engaged in the rod locking notch 104 of the upper pusher assembly. Then, the pusher rods 7 are fixed in the rod locking notch 104 by a fastener. Figure 9 As shown, complete the assembly of the upper tumescent knife assembly and the track bottom tumescent knife 4; as shown Figure 8 and Figure 9As shown, when the upper pusher knife assembly is placed on the rail 9 to be welded, it will occupy part of the gap between the two side rails 10 and the rail 9 to be welded. Since the gap between the two side rails 10 and the rail 9 to be welded is 53mm, after being partially occupied, the gap between the upper pusher knife assembly and the two side rails 10 is much smaller than 53mm. Therefore, when the upper pusher knife assembly and the rail bottom pusher knife 4 are assembled, the pusher knife pull rod 7 needs to pass through the gap between the upper pusher knife assembly and the two side rails 10. After the present invention stops working, the fixing part is removed and the pusher knife pull rod 7 is rotated away from the upper pusher knife assembly. One end of the pusher knife pull rod 7 leaves the pull rod locking notch 104. Then the pusher knife pull rod 7 leaves the gap between the upper pusher knife assembly and the two side rails 10, realizing the separation of the upper pusher knife assembly and the rail bottom pusher knife 4.

[0038] like Figure 2 and Figure 3 As shown, the upper pusher knife assembly includes a rail top pusher knife 1, a left rail waist pusher knife 3, and a right rail waist pusher knife 2, which remove the protruding parts of the top surface and outer side of the rail 9 to be welded; the left rail waist pusher knife 3 and the right rail waist pusher knife 2 are symmetrically arranged at both ends of the rail top pusher knife 1; the bottom of the rail top pusher knife 1 is provided with a rail top blade edge 103, the right side of the left rail waist pusher knife 3 is provided with a rail waist blade edge 302, and the left side of the right rail waist pusher knife 2 is provided with a rail waist blade edge 302; the rail waist blade edges 302 at the bottom of the rail top pusher knife 1, the right side of the left rail waist pusher knife 3, and the left side of the right rail waist pusher knife 2 are all blade edge contours that conform to the shape of the rail surface, and the distance between the blade edge contour and the rail 9 to be welded is 1mm~2mm; the left rail waist pusher knife 3 and the right rail waist pusher knife 2 are symmetrical parts.

[0039] like Figure 4 and Figure 8 As shown, two locking notches 104 are respectively opened at both ends of the rail top pusher 1; both ends of the rail top pusher 1 are provided with rail top connecting pin holes 102 that extend through the width direction of the rail top pusher 1; as shown Figure 2 As shown, x is the width direction of the rail top pusher 1, y is the height direction of the rail top pusher 1, and z is the length direction of the rail top pusher 1; the rail top connecting pin holes 102 at both ends of the rail top pusher 1 are connected to the tie rod locking notch 104; the top of the left rail waist pusher 3 and the right rail waist pusher 2 are each provided with a rail waist connecting pin hole 301 for connecting with the rail top pusher 1.

[0040] The rail waist connecting pin hole 301 of the left rail waist pusher 3 is connected to one side of the rail top pusher 1 through a rail waist connecting pin 5, and rotates outward with the rail waist connecting pin 5 as the rotation center; the rail waist connecting pin hole 301 of the right rail waist pusher 2 is connected to the other side of the rail top pusher 1 through another rail waist connecting pin 5, and rotates outward with the rail waist connecting pin 5 as the rotation center; as Figure 7 As shown, when placing the rail top pusher 1, the left rail waist pusher 3, and the right rail waist pusher 2 on the rail to be welded 9, the left rail waist pusher 3 and the right rail waist pusher 2 need to be rotated outward at a certain angle so that they can be placed on the rail to be welded 9.

[0041] like Figure 3 and Figure 8 As shown, the bottom of the left rail waist pusher knife 3 is provided with a rail waist knife positioning boss 303, and the rail waist knife positioning boss 303 is connected to the rail bottom knife positioning stop 403 at one end of the rail bottom pusher knife 4; the bottom of the right rail waist pusher knife 2 is provided with a rail waist knife positioning boss 303, and the rail waist knife positioning boss 303 is connected to the rail bottom knife positioning stop 403 at the other end of the rail bottom pusher knife 4.

[0042] like Figure 1 and Figure 3 As shown, both the right-rail waist-pushing knife 2 and the left-rail waist-pushing knife 3 are provided with weight-reducing holes to reduce their weight; as Figure 2 As shown, a rail top pusher 1 is provided with a rail top handle 101 on its top, which makes it easy for workers to pick it up or place it on the rail 9 to be welded.

[0043] Example 3

[0044] Based on Example 2, such as Figure 4 As shown, x1 represents the width of the rail bottom pusher 4, y1 represents the height of the rail bottom pusher 4, and z1 represents the length of the rail bottom pusher 4. The top two ends of the rail bottom pusher 4 are respectively provided with rail bottom pusher connecting pin holes 401 that extend through the width of the rail bottom pusher 4. The top two ends of the rail bottom pusher 4 are respectively provided with rail bottom pusher pull rod notches 404 that extend into the rail bottom pusher 4. The top two ends of the rail bottom pusher 4 are respectively provided with rail bottom pusher positioning stops 403 that extend into the rail bottom pusher 4. The rail bottom pusher connecting pin holes 401, rail bottom pusher pull rod notches 404, and rail bottom pusher positioning stops 403 are interconnected. The top of the rail bottom pusher 4 is provided with an inwardly recessed rail bottom pusher cutting edge 402, which is located between the rail bottom pusher positioning stops 403 at both ends of the top of the rail bottom pusher 4. The rail bottom pusher cutting edge 402 is used to remove the protruding portion at the bottom of the rail 9 to be welded.

[0045] The rail bottom pusher 4 has a rail bottom knife pull rod notch 404 at one end, which is rotatably connected to the connecting pin hole of the pusher 7 via a pull rod connecting pin 8, and the connecting pin hole is opened at one end of the pusher 7; the rail bottom knife pull rod notch 404 at the other end of the rail bottom pusher 4 is rotatably connected to the connecting pin hole of another pusher 7 via another pull rod connecting pin 8, and the connecting pin hole is opened at one end of the pusher 7; the other ends of the two pusher 7 pusher rods rotate about their respective pull rod connecting pin 8 in a direction that is closer to or farther away from the side of the upper pusher 7 assembly.

[0046] like Figure 5 As shown, the fastener is a locking threaded sleeve 6; as Figure 1 As shown, there are two locking threaded sleeves 6; as Figure 6 As shown, the other end of the two pusher rods 7 is provided with a rod locking thread 701; each of the two pusher rods 7 is connected to a locking thread sleeve 6 through the rod locking thread 701; the two locking thread sleeves 6 are in contact with the top of the rail top pusher 1; the bottom diameter, width or length of the two locking thread sleeves 6 is greater than the opening width of their corresponding rod locking opening, so that the two locking thread sleeves 6 are in contact with the top of the rail top pusher 1, and the two locking thread sleeves 6 cannot fall from the top of the rail top pusher 1 into the rod locking notch 104; the locking thread sleeve 6 includes a threaded sleeve handle 601 and a threaded sleeve body 603; the threaded sleeve handle 601 is located on the top of the threaded sleeve body 603, and the bottom of the threaded sleeve body 603 is provided with a threaded hole 602, so that the threaded sleeve handle 601 can be connected to the pusher rod 7 when rotating the threaded sleeve body 603, and the bottom of the threaded sleeve body 603 is in close contact with the top of the rail top pusher 1.

[0047] Example 4

[0048] Based on Embodiment 3, the installation process of this utility model is as follows: Figure 7 As shown, the upper pusher blade assembly rotates outward via the left rail waist pusher blade 3 and the right rail waist pusher blade 2, and is placed on the rail to be welded 9; as Figure 8 As shown, rotate the two pusher rods 7 outwards, move the bottom pusher 4 upwards, and let the two pusher rods 7 pass through the gap formed between the upper pusher assembly and the two rails 10 on both sides. Continue to move upwards until the positioning boss of the left rail waist pusher 3 engages with the rail bottom knife positioning stop 403 at one end of the rail bottom pusher 4, and the positioning boss at the bottom of the right rail waist pusher 2 engages with the rail bottom knife positioning stop 403 at the other end of the rail bottom pusher 4. At this time, rotate the two pusher rods 7 towards the direction of the upper pusher assembly until the two pusher rods 7 are respectively inserted into the tensioning and locking notches on both sides of the rail top pusher 1. Finally, tighten the locking threaded sleeve 6 to complete the installation of the entire pusher.

[0049] The above description is a detailed description of the preferred embodiments of this application. However, the embodiments are not intended to limit the scope of the patent application of this application. All equivalent changes or modifications made under the technical spirit of this application should fall within the patent scope covered by this application.

Claims

1. A structure of a cull removing tool for a turnout welding, characterized by: The application relates to a rail top and bottom tumor pushing device, which comprises an upper tumor pushing knife assembly and a rail bottom tumor pushing knife (4); the inner side of the upper tumor pushing knife assembly is provided with a knife edge; two ends of the top of the upper tumor pushing knife assembly are provided with pull rod locking notches (104); the top of the rail bottom tumor pushing knife (4) is provided with a rail bottom knife edge (402); the two ends of the rail bottom tumor pushing knife (4) are respectively rotationally connected with a tumor pushing knife pull rod (7); after the tumor pushing knife pull rod (7) is rotated towards the upper tumor pushing knife assembly, the tumor pushing knife pull rod (7) is clamped into the pull rod locking notches (104) of the upper tumor pushing knife assembly, and then the tumor pushing knife pull rod (7) is fixed in the pull rod locking notches (104) through a fixing member.

2. The structure of the bumping cutter for switch welding according to claim 1, characterized in that: The upper tumor pushing knife assembly comprises a rail top tumor pushing knife (1), a left rail waist tumor pushing knife (3) and a right rail waist tumor pushing knife (2); the left rail waist tumor pushing knife (3) and the right rail waist tumor pushing knife (2) are symmetrically arranged at the two ends of the rail top tumor pushing knife (1); the bottom of the rail top tumor pushing knife (1) is provided with a rail top knife edge (103), the right side surface of the left rail waist tumor pushing knife (3) is provided with a rail waist knife edge (302), and the left side surface of the right rail waist tumor pushing knife (2) is provided with a rail waist knife edge (302).

3. The structure of the bumping cutter for switch welding according to claim 2, characterized in that: Two pull rod locking notches (104) are respectively arranged at the two ends of the rail top tumor pushing knife (1); the two ends of the rail top tumor pushing knife (1) are provided with rail top connecting pin holes (102) penetrating along the width direction of the rail top tumor pushing knife (1); the rail top connecting pin holes (102) at the two ends of the rail top tumor pushing knife (1) are connected with the pull rod locking notches (104); the top of the left rail waist tumor pushing knife (3) and the top of the right rail waist tumor pushing knife (2) are respectively provided with a rail waist connecting pin hole (301) for being connected with the rail top tumor pushing knife (1).

4. The structure of the bumping cutter for switch welding according to claim 2, characterized in that: The rail waist connecting pin hole (301) of the left rail waist tumor pushing knife (3) is connected with one side of the rail top tumor pushing knife (1) through a rail waist connecting pin shaft (5), and rotates outward with the rail waist connecting pin shaft (5) as the rotation center; the rail waist connecting pin hole (301) of the right rail waist tumor pushing knife (2) is connected with the other side of the rail top tumor pushing knife (1) through another rail waist connecting pin shaft (5), and rotates outward with the rail waist connecting pin shaft (5) as the rotation center.

5. The structure of the bumping tool for switch welding according to claim 4, characterized in that: The bottom of the left rail waist tumor pushing knife (3) is provided with a rail waist knife positioning boss (303), and the rail waist knife positioning boss (303) is connected with a rail bottom knife positioning stop (403) at one end of the rail bottom tumor pushing knife (4); the bottom of the right rail waist tumor pushing knife (2) is provided with a rail waist knife positioning boss (303), and the rail waist knife positioning boss (303) is connected with a rail bottom knife positioning stop (403) at the other end of the rail bottom tumor pushing knife (4).

6. The structure of the bumping cutter for switch welding according to claim 5, characterized in that: The rail bottom push bumping knife (4) is provided with rail bottom knife connecting pin holes (401) penetrating along the width direction of the rail bottom push bumping knife (4) at the top of two ends of the rail bottom push bumping knife (4); the rail bottom push bumping knife (4) is provided with rail bottom knife pull rod notches (404) opened to the inside of the rail bottom push bumping knife (4) at the top of two ends of the rail bottom push bumping knife (4); the rail bottom knife connecting pin holes (401), the rail bottom knife pull rod notches (404) and the rail bottom knife positioning stop (403) are in communication with each other; the rail bottom push bumping knife (4) is provided with a rail bottom knife blade opening (402) recessed inward at the top of the rail bottom push bumping knife (4), and the rail bottom knife blade opening (402) is located between the rail bottom knife positioning stop (403) at the top of two ends of the rail bottom push bumping knife (4).

7. The structure of the bumping tool for switch welding according to claim 4, characterized in that: The rail bottom knife pull rod notch (404) at one end of the rail bottom push bumping knife (4) is rotationally connected with the connecting pin hole of the push bumping knife pull rod (7) through a pull rod connecting pin shaft (8), and the connecting pin hole is opened at one end of the push bumping knife pull rod (7); the rail bottom knife pull rod notch (404) at the other end of the rail bottom push bumping knife (4) is rotationally connected with the connecting pin hole of the other push bumping knife pull rod (7) through the other pull rod connecting pin shaft (8), and the connecting pin hole is opened at one end of the push bumping knife pull rod (7); the other ends of the two push bumping knife pull rods (7) are rotated towards the side direction close to or away from the upper push bumping knife assembly with the respective pull rod connecting pin shaft (8) as the rotation center.

8. The structure of the bumping cutter for switch welding according to claim 7, characterized in that: The fixing member is a locking threaded sleeve (6); there are two locking threaded sleeves (6); the other ends of the two push bumping knife pull rods (7) are provided with pull rod locking threads (701); the two push bumping knife pull rods (7) are respectively connected with one locking threaded sleeve (6) through the pull rod locking threads (701); the bottoms of the two locking threaded sleeves (6) are attached to the top of the rail top push bumping knife (1).

9. The structure of the bumping tool for switch welding according to claim 8, characterized in that: The locking threaded sleeve (6) comprises a threaded sleeve handle (601) and a threaded sleeve body (603); the threaded sleeve handle (601) is arranged at the top of the threaded sleeve body (603), and the bottom of the threaded sleeve body (603) is provided with a threaded threaded hole (602).

10. The structure of the bumping tool for switch welding according to claim 2, characterized in that: The right rail waist push bumping knife (2) and the left rail waist push bumping knife (3) are both provided with lightening holes for reducing the weight of the right rail waist push bumping knife (2) and the left rail waist push bumping knife (3); the top of the rail top push bumping knife (1) is provided with a rail top knife handle (101).

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