A device for assisting in the welding of a diamond crossing rail

Abstract

The application discloses a kind of for diamond turnout rail welding auxiliary device, it is related to the technical field of rail welding, including sand mould, mould shell, positioning mechanism and opening and closing mechanism, wherein: the sand mould is equipped with a pair and symmetrically distributed before and after;The mould shell is equipped with a pair and is correspondingly clamped to the outside of two sand moulds, and the mould shell is used to prevent the deformation or damage of two sand moulds during moulding;The positioning mechanism is equipped with a pair and symmetrically distributed left and right, and the positioning mechanism is used to position two sand moulds to the end gap between two rails to be welded;The opening and closing mechanism is equipped with a pair and is correspondingly distributed on the upper side of two positioning mechanisms, and the opening and closing mechanism is used to drive two sand moulds to automatically execute moulding and mould opening process.This kind of for diamond turnout rail welding auxiliary device in the application has the characteristics of reasonable scheme design, ingenious structure design, convenient use and maintenance.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of steel rail welding, in particular to a device for assisting the welding of diamond-shaped turnout rails. BACKGROUND

[0002] In the late nineteenth century, with the development of metallurgical industry and chemical industry, people invented aluminum heat welding to weld steel rails. In the twentieth century, foreign countries began to use aluminum heat welding to weld trolley tracks, railway and subway lines. In the early 1960s, China began to use aluminum heat welding to weld seamless rails on railways. The pouring and cooling process of steel rail aluminum heat welding is extremely similar to the law of casting, so aluminum heat welding is also called casting welding. In order to ensure the safety and stability of train operation, the railway department has strict requirements on the welding quality. The adjustment of the two steel rails used for welding before welding is the prerequisite for ensuring the welding quality.

[0003] The traditional aluminum heat welding mold is first attached to the two molds and the steel rail, and then fixed by using a bolt or other fixing device. After welding, the fixing device is removed, which is troublesome and low in work efficiency. SUMMARY

[0004] The purpose of the present application is to provide a device for assisting the welding of diamond-shaped turnout rails to solve the above-mentioned defects in the prior art.

[0005] A device for assisting the welding of diamond-shaped turnout rails, comprising a sand mold, a mold shell, a positioning mechanism and an opening and closing mechanism, wherein:

[0006] The sand mold is provided with a pair of and is symmetrically distributed front and back;

[0007] The mold shell is provided with a pair of and is correspondingly clamped on the outer side of the two sand molds, and the mold shell is used to prevent the two sand molds from being deformed or damaged during the closing process;

[0008] The positioning mechanism is provided with a pair of and is symmetrically distributed left and right, and the positioning mechanism is used to position the two sand molds to the end gap between the two steel rails to be welded;

[0009] The opening and closing mechanism is provided with a pair of and is correspondingly distributed on the upper side of the two positioning mechanisms, and the opening and closing mechanism is used to drive the two sand molds to automatically perform the closing and opening processes.

[0010] Preferably, the positioning mechanism includes a fixed plate, a hydraulic cylinder, a side fixing block, and a center fixing block. The fixed plate is horizontal and oriented front to back. A pair of hydraulic cylinders are symmetrically distributed front to back, with each hydraulic cylinder mounted vertically downwards at one end of the fixed plate. The piston rod of each hydraulic cylinder is connected to a hinge seat, and a "└"-shaped hinge bar is hinged to the hinge seat. A second hinge seat is connected to the side of the fixed plate next to the hydraulic cylinder, and the second hinge seat is hinged... A second hinge bar with an "│" shape is connected. The other end of the adjacent first hinge bar is hinged to the other end of the second hinge bar. A pair of side fixing blocks are provided and symmetrically distributed front and back. The side fixing blocks located on the same side are connected to the side of the first hinge bar. The side fixing blocks have a parallelogram structure and their inner side can fit against the rail web surface of the rail. A middle fixing block is provided and centrally connected to the lower side of the first fixing plate. The middle fixing block has a "︻" shaped structure and its lower side can fit against the rail head surface of the rail.

[0011] Preferably, the opening and closing mechanism includes a fixed plate two and a hydraulic cylinder two. The fixed plate two has a "┴" shaped structure and is vertically installed on the upper side of the fixed plate one. The hydraulic cylinder two is horizontally installed inward at the center of the fixed plate two. The piston rod of the hydraulic cylinder two is connected to a hinge seat three. Two hinge bars three are hinged to the hinge seat three, which are symmetrically arranged front and back. The other end of each hinge bar three is hinged to a hinge seat four. The hinge seats four located on the same side are correspondingly installed on the side of the mold shell.

[0012] Preferably, both the side fixing blocks and the center fixing blocks are made of hard rubber material, and anti-slip textures are provided on their surfaces that are in contact with the rail.

[0013] Preferably, an "I"-shaped connecting plate is installed on the lower side of the hinge seat three, and a "∩"-shaped cutting blade is installed on the lower side of the connecting plate, with the cutting edge of the cutting blade facing inward.

[0014] Preferably, a "∩"-shaped lifting frame is installed on the upper side of the second fixing plate, and a soft rubber anti-slip sleeve is fitted in the middle section of the lifting frame.

[0015] Compared with the prior art, the present invention has the following advantages:

[0016] 1. Place the center blocks on both sides against the rail head surfaces of the first and second rails respectively. Then, extend the piston rods of the hydraulic cylinders on both sides and drive the front and rear side blocks to adhere to the web surfaces of the first and second rails. This positions the two sand molds in the end gap between the two rails to be welded.

[0017] 2. Let the piston rod of the hydraulic cylinder two on both sides extend and drive the front and rear sand mold molds to automatically perform the mold closing; pour the molten metal solution into the cavity formed by the two sand mold molds, and cool for a certain time; let the piston rod of the hydraulic cylinder two on both sides retract and drive the front and rear sand mold molds to automatically perform the mold opening, and at the same time, drive the cutting knives on both sides to cut off the excess welding crystallization. BRIEF DESCRIPTION OF DRAWINGS

[0018] Fig. 1 It is a schematic diagram of the overall three-dimensional structure of the application.

[0019] Fig. 2 It is a schematic diagram of the structure of the pouring mold and the mold shell in the application.

[0020] Fig. 3 It is a schematic diagram of the structure of the positioning mechanism in the application.

[0021] Fig. 4 It is a schematic diagram of the structure of the opening and closing mechanism in the application.

[0022] Among them:

[0023] 10 - sand mold mold;

[0024] 20 - mold shell;

[0025] 30 - positioning mechanism; 301 - fixed plate one; 302 - hydraulic cylinder one; 303 - hinged seat one; 304 - hinged bar one; 305 - hinged seat two; 306 - hinged bar two; 307 - side positioning block; 308 - middle positioning block;

[0026] 40 - opening and closing mechanism; 401 - fixed plate two; 402 - hydraulic cylinder two; 403 - hinged seat three; 404 - hinged bar three; 405 - hinged seat four; 406 - connecting plate; 407 - cutting knife; 408 - lifting and placing frame; 409 - anti-skid sleeve;

[0027] 50 - first steel rail;

[0028] 60 - second steel rail. DETAILED DESCRIPTION

[0029] In order to make the technical means, creative features, purposes and effects realized by the application easy to understand, the application will be further described below in combination with specific embodiments.

[0030] As Figs. 1 to 4 shown, a device for assisting the welding of diamond-shaped turnout rails, comprising a sand mold mold 10, a mold shell 20, a positioning mechanism 30 and an opening and closing mechanism 40, wherein:

[0031] The sand mold mold 10 is provided with a pair of and is symmetrically distributed front and rear;

[0032] The mold shell 20 is provided with a pair of and correspondingly clamped to the outside of the two sand mold 10, the mold shell 20 is used to prevent the two sand mold 10 deformation or damage in the process of closing;

[0033] The positioning mechanism 30 is provided with a pair of and left-right symmetric distribution, the positioning mechanism 30 is used for positioning two sand mold 10 to the end gap between the two steel rails to be welded;

[0034] The opening and closing mechanism 40 is provided with a pair of and correspondingly distributed on the upper side of the two positioning mechanism 30, the opening and closing mechanism 40 is used to drive two sand mold 10 to automatically perform the closing and opening process.

[0035] In this embodiment, the positioning mechanism 30 includes a fixed plate 301, a hydraulic cylinder 302, a side block 307 and a middle block 308, the fixed plate 301 is horizontally and front-back oriented, the hydraulic cylinder 302 is provided with a pair of and front-back symmetric distribution, the hydraulic cylinder 302 is vertically downwardly mounted on the end of the fixed plate 301, the piston rod end of the hydraulic cylinder 302 is connected with the hinge seat 303, the hinge seat 303 is hinged with the hinge strip 304 of "└" type, the hinge seat 305 is connected with the hinge strip 306 of "│" type on the side of the fixed plate 301, the other end of the adjacent hinge strip 304 is hinged with the other end of the hinge strip 306, the side block 307 is provided with a pair of and front-back symmetric distribution, the side block 307 on the same side is connected to the side of the hinge strip 304, the side block 307 is a parallelogram structure and its inner side can be fitted to the rail waist surface of the steel rail, the middle block 308 is provided with one and connected to the lower side of the fixed plate 301, the middle block 308 is a "︻" type structure and its lower side can be fitted to the rail head surface of the steel rail.

[0036] In this embodiment, the opening and closing mechanism 40 includes a fixed plate 401 and a hydraulic cylinder 402, the fixed plate 401 is a "┴" type structure and is vertically mounted on the upper side of the fixed plate 301, the hydraulic cylinder 402 is horizontally inwardly mounted on the center of the fixed plate 401, the piston rod end of the hydraulic cylinder 402 is connected with the hinge seat 403, the hinge seat 403 is hinged with two front-back symmetric hinge strips 404, the other end of the hinge strip 404 is hinged with the hinge seat 405, the hinge seat 405 on the same side is correspondingly mounted on the side of the mold shell 20.

[0037] In this embodiment, both the side fixing block 307 and the center fixing block 308 are made of hard rubber material, and anti-slip textures are provided on their surfaces that fit against the rail. Using hard rubber to make the side fixing block 307 and the center fixing block 308 can both increase the friction with the rail and prevent excessive deformation from causing insecure clamping.

[0038] In this embodiment, an "I"-shaped connecting plate 406 is installed on the lower side of the hinge seat 403, and a "∩"-shaped cutting blade 407 is installed on the lower side of the connecting plate 406, with the cutting edge of the cutting blade 407 facing inward. By adding the cutting blade 407, excess weld crystals can be removed during the opening of the sand mold 10.

[0039] In this embodiment, a "∩"-shaped lifting frame 408 is installed on the upper side of the fixing plate 401, and a soft rubber anti-slip sleeve 409 is fitted on the middle section of the lifting frame 408. The addition of the lifting frame 408 makes it easier for workers to lift or lower the entire welding auxiliary device, while the anti-slip sleeve 409 is added to increase the friction between the palm and the lifting frame 408.

[0040] In practical applications, this auxiliary device for welding rails in diamond-shaped turnouts includes the following working process:

[0041] Step 1: Put the piston rods of the two hydraulic cylinders 402 in a semi-extended state, then clamp the two mold shells 20 onto the outside of the two sand molds 10, and then fit the two sand molds 10 into the end gap between the first rail 50 and the second rail 60.

[0042] Step 2: Place the center fixing blocks 308 on both sides onto the rail head surfaces of the first rail 50 and the second rail 60 respectively. Then, extend the piston rods of the hydraulic cylinders 302 on both sides and drive the two side fixing blocks 307 to adhere to the rail web surfaces of the first rail 50 and the second rail 60. In this way, the two sand molds 10 are positioned in the end gap between the two rails to be welded.

[0043] Step 3: Extend the piston rods of the hydraulic cylinders 402 on both sides and drive the two sand molds 10 to automatically close the mold.

[0044] Step 4: Pour the molten metal solution into the cavity formed by two sand molds 10 and let it cool for a certain period of time;

[0045] Step 5: Retract the piston rods of the hydraulic cylinders 402 on both sides and drive the two sand molds 10 to automatically open the mold. At the same time, drive the cutting blades 407 on both sides to remove the excess weld crystals.

[0046] Step 6: The two side blocks 307 are disengaged from the rail waist surface of the first rail 50 and the second rail 60 by retracting the piston rods of the two hydraulic cylinders 302 and lifting the whole welding auxiliary device, so that the two middle blocks 308 are disengaged from the rail head surface of the first rail 50 and the second rail 60, respectively.

[0047] Therefore, the above disclosed embodiments are only examples in all aspects, and are not the only ones. All changes within the scope of the present application or within the scope equivalent to the present application are included in the present application.

Claims

1. An auxiliary device for welding rails of diamond-shaped turnouts, characterized in that, It includes a sand mold (10), a mold shell (20), a positioning mechanism (30), and an opening and closing mechanism (40), wherein: The sand mold (10) is provided in pairs and is symmetrically distributed front and back; The mold shell (20) is provided with a pair and correspondingly snapped onto the outside of the two sand molds (10). The mold shell (20) is used to prevent the two sand molds (10) from deforming or being damaged during the mold closing process. The positioning mechanism (30) is provided in pairs and is symmetrically distributed on the left and right. The positioning mechanism (30) is used to position the two sand molds (10) into the end gap between the two rails to be welded. The opening and closing mechanism (40) is provided in pairs and is correspondingly distributed on the upper side of the two positioning mechanisms (30). The opening and closing mechanism (40) is used to drive the two sand molds (10) to automatically perform the mold closing and mold opening process. The positioning mechanism (30) includes a fixed plate (301), a hydraulic cylinder (302), a side fixing block (307), and a center fixing block (308). The fixed plate (301) is horizontal and oriented front to back. There is a pair of hydraulic cylinders (302) symmetrically distributed front to back. The hydraulic cylinders (302) are vertically mounted at the end of the fixed plate (301). The piston rod of the hydraulic cylinder (302) is connected to a hinge seat (303). A "└"-shaped hinge bar (304) is hinged to the hinge seat (303). A second hinge seat (305) is connected to the side of the hydraulic cylinder (302) on the fixed plate (301). The hinge seat 2 (305) is hinged with a "│" shaped hinge bar 2 (306), and the other end of the adjacent hinge bar 1 (304) is hinged to the other end of the hinge bar 2 (306). The side fixing blocks (307) are provided in pairs and are symmetrically distributed front and back. The side fixing blocks (307) located on the same side are connected to the side of the hinge bar 1 (304). The side fixing blocks (307) are parallelogram structures and their inner side can fit against the rail web surface of the rail. The center fixing block (308) is provided and is centrally connected to the lower side of the fixing plate 1 (301). The center fixing block (308) is a "︻" shaped structure and its lower side can fit against the rail head surface of the rail. The opening and closing mechanism (40) includes a fixed plate two (401) and a hydraulic cylinder two (402). The fixed plate two (401) has a "┴" shaped structure and is vertically installed on the upper side of the fixed plate one (301). The hydraulic cylinder two (402) is horizontally installed inward at the center of the fixed plate two (401). The piston rod end of the hydraulic cylinder two (402) is connected to a hinge seat three (403). Two hinge bars three (404) are hinged on the hinge seat three (403) with front and rear symmetry. The other end of each hinge bar three (404) is hinged to a hinge seat four (405). The hinge seats four (405) located on the same side are correspondingly installed on the side of the mold shell (20). The lower side of the hinge seat three (403) is equipped with an "I"-shaped connecting plate (406), and the lower side of the connecting plate (406) is equipped with a "∩"-shaped cutting blade (407), with the cutting edge of the cutting blade (407) facing inward.

2. The auxiliary device for welding rails of a diamond-shaped turnout according to claim 1, characterized in that, Both the side fixing block (307) and the center fixing block (308) are made of hard rubber material, and anti-slip textures are provided on their surfaces that are in contact with the rail.

3. The auxiliary device for welding rails of a diamond-shaped turnout according to claim 1, characterized in that, The upper side of the fixed plate 2 (401) is equipped with a "∩" shaped lifting frame (408), and the middle section of the lifting frame (408) is fitted with a soft rubber anti-slip sleeve (409).

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