Clamping method for variable cross-section steel rail flash welding machine

Abstract

The invention relates to a clamping method for a variable cross-section steel rail flash welding machine, the flash welding machine comprises a movable frame and a static frame, a first clamping mechanism is arranged on the movable frame, at least one first electrode group is oppositely arranged on the first clamping mechanism, a second clamping mechanism is arranged on the static frame, and at least one second electrode group is oppositely arranged on the second clamping mechanism. The method comprises the following steps that S1, a steel rail at one end is clamped through the first clamping mechanism on the movable frame, and at least one first electrode set in the first electrode set is clamped on a rail head of the steel rail; during use, at least one of the first electrode groups is clamped on a rail head of the steel rail by changing the clamping mode of the first electrode groups and the second electrode groups on the steel rail, and the second electrode group can be independently clamped on the rail head of the steel rail, or independently clamped on a rail web of the steel rail, or both clamped on the rail head of the steel rail according to requirements. And the clamping device is clamped on the rail web of the steel rail in various clamping modes.

Description

Technical Field

[0001] The invention relates to a clamping method for a variable-section rail flash welding machine. Background Art

[0002] The current mobile rail flash welding machine electrode clamping rail method is as follows Figure 1 As shown, since the longitudinal shape of the rails is consistent, the clamping point is selected at the rail waist, with two clamping points for each of the dynamic frame and the static frame. The typical structure of the rail flash welder is shown in Chinese patent application number: 2017109824814. The electrodes on the traditional rail flash welder have three main functions: the first is to clamp the main rails so that there is no slipping during welding and forging; the second is to conduct electricity. The flash and heating at the rail weld come from the electrodes conducting the welding voltage to both ends of the weld; the third is the positioning of the rail welding joint. The clamped and fixed rails must have strong centering and centering performance to ensure that there are no high and low joints or misaligned joints in the welding joints.

[0003] For turnout flash welding machines, variable cross-section AT rails are required, such as Figure 2 As shown, the 450mm long side on the right side of the figure is a standard 60kg / m rail, and the rail type is shown in the right figure. The left side is L (undetermined) and the 60kg / mAT rail, and the rail type is shown in the left figure. The middle 150mm is the rail type transition part. The welding part is the end of the 60kg / m standard rail, which is welded with the ordinary 60kg / m rail. If the current method of clamping the rail with electrodes is used to clamp the variable-section AT rail, the position of the electrode close to the welding end is in the standard rail area, and ordinary electrodes can be used. Since the structure of the variable-section AT rail in the outer rail type transition zone is asymmetrical with the standard rail side, the electrode cannot clamp the waist of the variable-section AT rail, which reduces the applicability of the welding machine and reduces the welding efficiency. Summary of the invention

[0004] The technical problem to be solved by the present invention is: in order to solve the problem that the existing method of clamping rails with electrodes cannot clamp the waist of variable-section AT rails, thereby reducing the applicability of the welding machine and the welding efficiency, a clamping method for a flash welding machine for variable-section rails is provided.

[0005] The technical solution adopted by the present invention to solve the technical problem is: a clamping method for a flash welding machine for a variable-section rail, the flash welding machine comprises a moving frame and a stationary frame, the moving frame is provided with a first clamping mechanism, the first clamping mechanism is relatively provided with at least one group of first electrode groups, the stationary frame is provided with a second clamping mechanism, the second clamping mechanism is relatively provided with at least one group of second electrode groups, comprising the following steps:

[0006] S1, clamping a steel rail at one end by a first clamping mechanism on a movable frame, and clamping at least one of the first electrode groups on a rail head of the steel rail;

[0007] S2. Clamp the rail at the other end through the second clamping mechanism on the static frame, and clamp the second electrode group on the rail waist and / or rail head of the rail. Compared with the prior art, this solution changes the clamping method of the first electrode group and the second electrode group on the rail, so that at least one of the first electrode groups is clamped on the rail head of the rail, and the second electrode group can be clamped on the rail head alone according to requirements, or clamped on the rail waist alone, or clamped on both the rail head and the rail waist of the rail. A variety of clamping methods can realize clamping welding of special rails, and can also be applied to clamping welding of ordinary rails, thereby improving the applicability of the welding machine.

[0008] In some preferred embodiments, two groups of first electrode groups are arranged opposite to each other on the first clamping assembly, wherein one group of the first electrode groups is clamped on the waist of the rail, and the other group of the first electrode groups is clamped on the head of the rail.

[0009] In some preferred embodiments, the rail clamped by the first clamping mechanism on the movable frame is a variable-section AT rail or a special-shaped rail.

[0010] The beneficial effects of the present invention are as follows: when the clamping method of the flash welding machine for variable-section rails of the present invention is used, by changing the clamping method of the first electrode group and the second electrode group on the rail, at least one of the first electrode groups is clamped on the rail head of the rail, and the second electrode group can be clamped on the rail head of the rail alone according to requirements, or clamped on the rail waist of the rail alone, or clamped on both the rail head of the rail and the rail waist of the rail. A variety of clamping methods can realize the clamping welding of special rails and can be applicable to the clamping welding of ordinary rails, meet the welding use of different types of rails, improve the applicability of the welding machine, and also improve the welding efficiency of the rails, avoiding the problem that the existing method of clamping rails with electrodes cannot clamp the rail waist of the variable-section AT rail, reduces the applicability of the welding machine, and reduces the welding efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] The present invention is further described below in conjunction with the accompanying drawings and embodiments.

[0012] Figure 1 It is a schematic diagram of clamping of existing common rails;

[0013] Figure 2 It is a schematic diagram of the existing variable-section AT rail;

[0014] Figure 3 It is a schematic diagram of the structure of a clamping rail in the present invention;

[0015] Figure 4 It is a schematic diagram of another structure of clamping rails in the present invention;

[0016] Figure 5 It is a schematic diagram of the structure of another rail clamping device in the present invention.

[0017] In the figure: 1, rail, 101, rail head, 102, rail waist, 2, first electrode group, 3, second electrode group. DETAILED DESCRIPTION

[0018] The present invention is further described in detail below in conjunction with embodiments:

[0019] The present invention is not limited to the following specific embodiments. A person skilled in the art can implement the present invention in various other specific embodiments according to the contents disclosed in the present invention, or any simple changes or modifications made to the design structure and ideas of the present invention fall within the protection scope of the present invention. It should be noted that the embodiments and features in the embodiments of the present invention can be combined with each other without conflict.

[0020] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", and the like are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, features defined as "first", "second", and the like may explicitly or implicitly include one or more of the features. In the description of the present invention, unless otherwise specified, "multiple" means two or more.

[0021] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood by specific circumstances.

[0022] like Figure 3-5As shown, a clamping method for a flash welder for a variable-section rail is shown, the flash welder includes a moving frame and a stationary frame, a first clamping mechanism is arranged on the moving frame, in this embodiment, two groups of first electrode groups 2 are arranged relatively on the first clamping mechanism, and the two groups of first electrode groups 2 are arranged at intervals along the axial direction of the rail 1. Of course, in addition to the two groups of first electrode groups 2 in this embodiment, one group, three groups or more can also be provided, a second clamping mechanism is arranged on the stationary frame, and two groups of second electrode groups 3 are arranged relatively on the second clamping mechanism. Of course, in addition to the two groups of first electrode groups 2 in this embodiment, one group, three groups or more can also be provided, and at the same time, an upsetting mechanism is installed between the moving frame and the stationary frame, and the upsetting mechanism is used to control the moving frame to approach or move away from the stationary frame assembly along the axial direction of the rail 1, including the following steps:

[0023] S1, clamping the rail 1 at one end by the first clamping mechanism on the movable frame, and clamping one of the first electrode groups 2 on the rail head 101 of the rail 1, and clamping the other of the first electrode groups 2 on the rail head 101 of the rail 1, or clamping the other of the first electrode groups 2 on the rail waist 102 of the rail 1;

[0024] S2. Clamp the steel rail 1 at the other end through the second clamping mechanism on the stationary frame, and clamp the second electrode group 3 on the rail waist 102 and / or rail head 101 of the steel rail 1.

[0025] In this embodiment, the rail 1 clamped by the first clamping mechanism on the movable frame is a variable-section AT rail 1 or a special-shaped rail 1 .

[0026] When the above-mentioned clamping method for a flash welding machine for variable-section rails is used, in this embodiment, a variable-section AT rail 1 is taken as an example. The variable-section AT steel has an AT rail area, a transition rail area, and an ordinary standard rail area connected in sequence. The profiles of the rail heads 101 in the three rail areas are completely consistent and symmetrical. A clamping method is used, in which the two groups of first electrode groups 2 of the first clamping mechanism on the moving frame are clamped on the rail head 101 of the variable-section AT rail 1, and the two groups of second electrode groups 3 of the second clamping mechanism on the static frame are clamped on the rail head 101 of the ordinary rail 1. The clamping rail head 101 can obtain sufficient clamping force, and the welding end electrode remains unchanged, which can ensure the positioning and welding conductivity between the rails 1. When welding between ordinary rails 1 is required, such a clamping method is fully compatible and does not The welding of the ordinary rail 1 can be carried out by replacing the electrode. Another clamping method is that a group of first electrode groups 2 on the outer side of the first clamping mechanism on the moving frame is clamped on the rail head 101 of the variable-section AT rail 1, and another group of first electrode groups 2 on the inner side is clamped on the rail waist 102 of the variable-section AT rail 1, and two groups of second electrode groups 3 of the second clamping mechanism on the static frame are clamped on the rail waist 102 of the ordinary rail 1, or, two groups of second electrode groups 3 of the second clamping mechanism on the static frame are clamped on the rail head 101 of the ordinary rail 1, or, one group of second electrode groups 3 of the second clamping mechanism on the static frame are clamped on the rail head 101 of the ordinary rail 1, and the other group of second electrode groups 3 are clamped on the rail waist 102 of the ordinary rail 1. A variety of clamping methods are selected according to actual clamping.

[0027] The above-mentioned ideal embodiments of the present invention are for inspiration. Through the above-mentioned description, relevant staff can make various changes and modifications without departing from the technical idea of ​​the present invention. The technical scope of the present invention is not limited to the contents of the specification, and its technical scope must be determined according to the scope of the claims.

Claims

1. A clamping method for a flash welder for a variable cross-section rail, the flash welder comprising a moving frame and a stationary frame, the moving frame being provided with a first clamping mechanism, the first clamping mechanism being provided with at least one first electrode group (2) being relatively arranged thereon, the stationary frame being provided with a second clamping mechanism, the second clamping mechanism being provided with at least one second electrode group (3) being relatively arranged thereon, characterized in that: The steps include: S1, clamping a steel rail (1) at one end by a first clamping mechanism on a movable frame, and clamping at least one of the first electrode groups (2) on a rail head (101) of the steel rail (1); S2. Clamp the steel rail (1) at the other end by means of a second clamping mechanism on the stationary frame, and clamp the second electrode group (3) on the rail waist (102) and / or rail head (101) of the steel rail (1).

2. A clamping method for a variable-section rail flash welding machine according to claim 1, characterized in that: Two groups of first electrode groups (2) are arranged opposite to each other on the first clamping assembly, wherein one group of the first electrode groups (2) is clamped on the rail waist (102) of the steel rail (1), and the other group of the first electrode groups (2) is clamped on the rail head (101) of the steel rail (1).

3. The clamping method for a variable-section rail flash welding machine according to claim 1 is characterized in that: The steel rail (1) clamped by the first clamping mechanism on the movable frame is a variable-section AT steel rail (1) or a special-shaped steel rail (1).

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