A rapid cooling device for the surface of rail welding joints

Abstract

The utility model discloses a device for rapidly cooling the surface of a rail welding joint, comprising a gantry structure support, a rail top air jet box, a rail waist air jet box and a refrigeration device. The rail top air jet box and two rail waist air jet boxes are respectively installed on the top and left and right sides of the support through a position adjustment mechanism, and the vertical position adjustment of the rail top air jet box and the left and right direction adjustment of the left and right side air jet boxes are achieved through the position adjustment mechanism. The three air jet boxes are used to pass the rails, and the three air jet boxes have air jet holes evenly distributed on one side as air jet surfaces, facing the rail top and the rail waists on both sides of the passing rails respectively. Air inlets are also designed on the side walls of the three air jet boxes, which are connected to the refrigeration equipment through high-pressure air ducts, and then the cold air generated by the refrigeration equipment is supplied to each air jet box, and the cold air is blown toward the rails through the air jet holes on the air jet surface, so as to achieve the cooling operation of the rail welding joint. The utility model is not affected by environmental and workpiece factors, can save energy and reduce emissions, improve operating efficiency, and has high equipment stability.

Description

Technical Field

[0001] The utility model relates to the field of cold processing of rail welds, and is a device for rapidly cooling the surface of rail weld joints. Technical Background

[0002] According to the China Railway Corporation enterprise standard Q / CR707-2019-9.1.1.4, when measuring the straightness of the cold-processed welded joint of the rail, the joint should be at the natural rail temperature. At present, there are four main operations in the cold processing of rails in the welded rail base, and the operation process is: welding joint straightening-shape finishing (fine grinding / fine milling)-appearance inspection-ultrasonic flaw detection. The device is installed after the shape finishing station and before the appearance inspection station. Because the surface finishing stations of some bases use fine grinding equipment and the joints are trimmed by grinding, this will cause the temperature of the joint grinding part to rise, and the appearance inspection station needs to measure the straightness of the joint. The high temperature of the joint will cause the measured data value to be too large and cause false data. Therefore, the base uses water cooling (wetting with water) to cool down the temperature of the joint grinding part, cool it to the natural temperature, and then measure the straightness. However, when the northern rail welding base is producing in winter, although the joint water spraying method can reduce the temperature of the joint grinding part, there will be water in the joint grinding part. When the rails are running on the roller, they will quickly form thin ice. The joint after the thin ice is severely inspected, and the operation efficiency is low. At present, this joint cooling method has great disadvantages.

[0003] The current shortcomings:

[0004] (1) The water-spraying part of the joint is prone to ice formation (in winter in the north);

[0005] (2) Low operating efficiency;

[0006] (3) The watering time is long and the cooling speed is slow;

[0007] (4) Waste of water resources and increased costs. Utility Model Content

[0008] In order to solve the above problems, the joint can be quickly reduced to the auto-ignition temperature after fine grinding, and there is no water in the fine grinding part of the joint. A device is proposed to ensure the cold processing effect of the joint.

[0009] The utility model discloses a device for rapidly cooling the surface of a rail welding joint, which comprises a bracket, a rail top air spray box, a rail waist air spray box and refrigeration equipment.

[0010] The support is a gantry frame, with a rail top air jet box installed on the top and rail waist air jet boxes installed on the left and right sides. There is a space for the rail to pass between the rail top air jet box and the rail waist air jet boxes on both sides. At the same time, one side of the rail top air jet box and the two rail waist air jet boxes serve as air jet surfaces, and are evenly distributed with air jet holes; and the air jet surface of the rail top air jet box faces the top of the rail, and the air jet surfaces of the rail waist air jet boxes on both sides face the rail waist of the rail.

[0011] The rail top air jet box and the rail waist air jet boxes on both sides are installed on the gantry through a position adjustment mechanism, so that the rail top air jet box has a moving pair in the vertical direction, and the rail waist air jet boxes on both sides have a moving pair in the left and right direction. Air inlets are provided on the rail top air jet box and the rail waist air jet boxes on both sides, and the refrigeration equipment is connected to the air inlets of each air jet box through an air inlet pipe. The structure of the above-mentioned position adjustment mechanism and the installation method between the bracket are as follows: the position adjustment mechanism includes an adjusting screw, a push rod and a push rod limit platform. Among them, the adjusting screw has an external thread and is arranged along the direction of the moving pair. The adjusting screw is coaxially threaded with the threaded hole opened on the bracket; the front end of the adjusting screw is designed with a coaxial threaded hole, which is coaxially threaded with the external thread designed at the end of the push rod. The push rod is coaxially placed in the through hole of the push rod limit platform fixedly installed on the connecting plate designed on the inner side of the gantry, and a positioning protrusion is designed on the middle side wall of the push rod along the axial direction of the push rod. The positioning protrusion is plugged into the positioning recessed portion provided along the axial direction of the through hole on the push rod limiting platform to limit the circumferential rotation of the push rod; the front end of the push rod is used to connect the air spray box.

[0012] Therefore, when the rail passes between the three air blow boxes, cold air is blown toward the rail through the air blow surfaces of the three air blow boxes, thereby achieving rapid cooling of the rail welding joint.

[0013] The advantages of the utility model are:

[0014] (1) The utility model provides a rapid cooling device for the surface of a rail welding joint, which has a fast cooling speed and improves the working efficiency;

[0015] (2) The rail welding joint surface rapid cooling device of the utility model does not require water spraying, does not freeze, and is energy-saving and environmentally friendly. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a schematic diagram of the overall structure of the utility model of a rapid cooling device for the surface of a rail welding joint;

[0017] Figure 2 It is a schematic diagram of the structure of the position adjustment component in the rapid cooling device for the surface of a rail welding joint of the utility model.

[0018] 1-air jet box at rail head 2-air jet box at left side of rail waist 3-air jet box at right side of rail waist

[0019] 4- Position adjustment assembly 5- Support frame 6- FDR type refrigeration equipment

[0020] 401-adjusting screw 402-elevator 403-elevator limiter

[0021] 404- positioning protrusion 405- positioning recess 406- handle

[0022] 501-top support plate 502-left support plate 503-right support plate

[0023] 504-top plate 505-left plate 506-right plate DETAILED DESCRIPTION

[0024] The utility model will be further described below in conjunction with the accompanying drawings.

[0025] The utility model air jet box position adjustable device comprises a rail head air jet box 1, a rail waist left side air jet box 2, a rail waist right side air jet box 3, a position adjustment component 4, a support frame 5 and an FDR type refrigeration device 6, such as Figure 1 shown.

[0026] The support frame 5 is a gantry structure, having a top support plate 501, a left support plate 502 and a right support plate 503. At the same time, a mounting plate of an inverted U-shaped structure formed by a top plate 504, a left plate 505 and a right plate 506 is also installed inside the gantry structure. The mounting plate is arranged perpendicular to the three support plates, and the left and right side edges are respectively connected and fixed to the left support plate 502 and the right support plate 503, and the top edge is connected and fixed to the top support plate 501.

[0027] In the above-mentioned mounting plate, the top plate 504, the left plate 505 and the right plate 506 are respectively matched with the top support plate 501, the left support plate 502 and the right support plate 503 to install the position adjustment component. The installation method is the same. The following takes the top plate 504 and the top support plate 501 as an example to install the position adjustment component, and the specific installation method of the position adjustment plate is described:

[0028] The position adjustment assembly 4 includes an adjustment screw 401, a push rod 402 and a push rod limiter 403. The adjustment screw 401 has an external thread, is arranged perpendicular to the top support plate 501, and is coaxially threadedly connected with a threaded hole opened in the middle of the top support plate 501. A coaxial threaded hole is designed at the front end of the adjustment screw 401, which is coaxially threadedly connected with the external thread designed at the end of the push rod 402; a handle 406 is designed at the end of the adjustment screw 401 for holding and rotating the adjustment screw 401.

[0029] The ejector rod 402 is coaxially arranged in a through hole designed on an ejector rod limiting platform 404 installed in the middle of the side wall of the ejector plate 503, and a positioning protrusion 404 is designed on the middle side wall of the ejector rod 402 along the axial direction of the ejector rod 402; the positioning protrusion 404 is engaged with a positioning recess 405 provided along the axial direction of the through hole on the ejector rod limiting platform 403. Thus, the ejector rod 402 is limited from rotating in the circumferential direction by the cooperation between the positioning protrusion 404 and the positioning recess 405.

[0030] The rail head air jet box 1, rail waist left side air jet box 2, rail waist right side air jet box 3 are all rectangular cross-section boxes; the front side of the rail head air jet box 1, rail waist left side air jet box 2, rail waist right side air jet box 3 is used as an air jet surface, and there are air jet holes with a diameter of 4mm evenly distributed thereon; the rear side is used as a connecting surface, and the center position is connected and fixed to the front end of the top rod 404 in the position adjustment component 4. The rail head air jet box 1, rail waist left side air jet box 2, rail waist right side air jet box 3 are used to pass the rails, and the center of the front side of the rail head air jet box 1, rail waist left side air jet box 2, rail waist right side air jet box 3 is directly facing the top of the rail and the middle of the left and right sides of the rail waist. At the same time, the lateral length (in the direction of rail width) of the front side of the rail head air jet box 1 is greater than the rail head width; the longitudinal height (in the direction of rail height) of the front side of the rail waist left side air jet box 2 and the rail waist right side air jet box 3 is greater than the rail waist height; thereby, the air outlet range of the air jet holes in the rail head air jet box 1, the rail waist left side air jet box 2, and the rail waist right side air jet box 3 can cover the rail head and the left and right sides of the rail waist.

[0031] The rail head air jet box 1, the rail waist left side air jet box 2, and the rail waist right side air jet box 3 are also designed with air inlet holes on their side walls; the FDR refrigeration equipment 6 is connected to each air inlet hole by a high-pressure air duct (air inlet duct) to supply cold air in the low temperature box of the FDR refrigeration equipment to each air jet box. The FDR refrigeration equipment 6 is installed on the top of the support frame 5.

[0032] When the adjustable air spray device of the utility model is used, the rail passes between the rail head air spray box 2 and the two rail waist air spray boxes 3, and the rail head air spray box 1, the rail waist left side air spray box 2, and the rail waist right side air spray box 3 respectively spray cold air to the top surface of the rail and the two sides of the rail waist; and by rotating the adjusting screw 401 in the position adjustment component 4, the adjusting screw 401 can drive the top rod to move axially, so as to adjust the spacing between the rail head air spray box 1, the rail waist left side air spray box 2, the rail waist right side air spray box 3 and the rail top and the rail waist on both sides, so as to adapt to the cooling operation of the welded joints of rails of different models (60 rails and 75 rails) and sizes.

Claims

1. A device for rapidly cooling the surface of a rail welding joint, characterized in that: Including bracket, rail top air spray box, rail waist air spray box and refrigeration equipment; The support is a gantry frame, with a rail top air jet box installed on the top; rail waist air jet boxes are installed on the left and right sides; there is a space for the rail to pass between the rail top air jet box and the rail waist air jet boxes on both sides; at the same time, one side of the rail top air jet box and the two rail waist air jet boxes serve as air jet surfaces, and are evenly provided with air jet holes; and the air jet surface of the rail top air jet box faces the rail top, and the air jet surfaces of the rail waist air jet boxes on both sides face the rail waist; The rail top air jet box and the rail waist air jet boxes on both sides are provided with air inlet holes, and the refrigeration equipment is connected with the air inlet holes of each air jet box through an air inlet pipe.

2. A rail welding joint surface rapid cooling device as claimed in claim 1, characterized in that: The rail top air jet box and the rail waist air jet boxes on both sides are installed on the gantry through a position adjustment mechanism, so that the rail top air jet box has a vertical moving pair, and the rail waist air jet boxes on both sides have a left-right moving pair.

3. A rail welding joint surface rapid cooling device as claimed in claim 2, characterized in that: The structure of the position adjustment mechanism and the installation method between the bracket are as follows: The position adjustment mechanism includes an adjusting screw, a push rod and a push rod limit platform; wherein the adjusting screw has an external thread and is arranged along the moving sub-direction; the adjusting screw is coaxially threadedly connected with the threaded hole opened on the bracket; a coaxial threaded hole is designed at the front end of the adjusting screw, which is coaxially threadedly connected with the external thread designed at the end of the push rod; the push rod is coaxially placed in a through hole of the push rod limit platform fixedly installed on a connecting plate designed on the inner side of the gantry, and a positioning protrusion is designed on the middle side wall of the push rod along the axial direction of the push rod; the positioning protrusion is plugged into a positioning recess opened on the side wall of the through hole on the push rod limit platform along the axial direction of the hole to limit the circumferential rotation of the push rod; the front end of the push rod is used to connect the air spray box.

4. A rail welding joint surface rapid cooling device as claimed in claim 3, characterized in that: A handle is designed at the end of the adjusting screw.

5. A rail welding joint surface rapid cooling device as claimed in claim 1, characterized in that: The refrigeration equipment adopts FDR type refrigeration equipment.

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