Steel rail milling fixing tool

Abstract

The utility model discloses a steel rail milling fixing tool, which belongs to the technical field of steel rail milling and comprises a portal frame milling machine and a processing platform arranged on the portal frame milling machine, a steel rail is clamped on the processing platform, and a plurality of clamping tools, at least one tail end limiting seat, a movable single-side clamp and a heightening seat are mounted on the processing platform. The multiple clamping tools are matched with the at least one tail end limiting seat, the movable single-side clamp and the heightening seat to fix the steel rail, and the problems that one end of the steel rail is milled, the special-shaped end of the other end of the steel rail cannot be attached to the electromagnetic chuck and cannot be clamped, the part can generate vibration in the milling process, and the machining efficiency of the steel rail is affected are solved. Therefore, the milling effect and the machining precision of the rail bottom are affected, the machining error is large, and the quality of finished steel rails is greatly reduced.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the steel rail milling technical field, concretely relates to a steel rail milling fixing frock. BACKGROUND

[0002] Rail is the main component of railway track, its function is in guiding the locomotive vehicle wheel advance, bear the huge pressure of wheel, and transfer to the sleeper on. Rail must provide continuous, smooth and minimum resistance rolling surface for wheel, in electrified railway or automatic block section, rail can also be used as track circuit. The rail section shape adopts the I-shaped section with the best bending resistance, which is composed of rail head, rail waist and rail bottom, wherein the whole rail includes standard section and special-shaped section at both ends of the standard section, wherein the special-shaped section needs to be milled, and in the production and manufacturing of the existing rail, the rail bottom of the standard section is contacted with the electromagnetic chuck, when needing to be processed, the special-shaped section at one end of the standard section is milled, and the special-shaped section at the other end cannot be attached to the electromagnetic chuck, so that it cannot be clamped, and the part will vibrate during the milling process, thereby affecting the overall milling effect and processing precision of the rail, and the processing error is large, which greatly reduces the finished product quality of the rail. CONTENT OF THE UTILITY MODEL

[0003] To solve the problems in the background art, the utility model provides a steel rail milling fixing frock, which can fix and clamp the special-shaped part of the rail that cannot be adsorbed by the electromagnetic chuck through the cooperation of the tail end limiting seat and the movable single-side clamp and the heightening seat, reduce the vibration of the special-shaped section at the other end of the standard section of the rail when the special-shaped section at one end is milled, reduce the milling error, and ensure the finished product quality of the rail.

[0004] To achieve the above object, the utility model provides the following technical scheme: a steel rail milling fixing frock, which comprises a gantry milling machine and a processing platform arranged on the gantry milling machine, a steel rail is clamped on the processing platform, a plurality of clamping frocks and at least one tail end limiting seat, movable single-side clamp and heightening seat are installed on the processing platform, and the plurality of clamping frocks and the at least one tail end limiting seat, movable single-side clamp and heightening seat cooperate to fix the steel rail.

[0005] The steel rail comprises a standard section and a special-shaped section, the standard section is clamped and limited by a clamping frock, the heightening seat is installed at the bottom of the connecting part of the standard section and the special-shaped section of the steel rail, the movable single-side clamp clamps and presses the lower part of the special-shaped section of the steel rail, and the tail end limiting seat limits the part close to the end face of the lower part of the special-shaped section of the steel rail.

[0006] Preferably, the clamping tool comprises an electromagnetic base mounted on the machining platform and a resisting plate mounted on one side of the electromagnetic base, and a clamping hook strip is arranged on the side of the electromagnetic base away from the resisting plate and matches the rail bottom part of the steel rail, and a threaded jacking column is threadedly connected to the resisting plate and used to abut against the rail waist of the steel rail to make one side of the rail waist match the clamping hook strip of the electromagnetic base.

[0007] Preferably, the heightening base comprises a cushion block mounted on the machining platform and a rail bottom limiting plate arranged on one side of the top of the cushion block, and the cushion block matches the lower bottom surface of the rail bottom of the steel rail, and the rail bottom limiting plate is in the shape of 7 and matches the upper surface of the rail bottom of the steel rail.

[0008] Preferably, the pressing hook comprises a connecting plate connected to the main shaft, an inclined plate connected to one end of the connecting plate away from the main shaft, and a clamping hook arranged on the top of one end of the inclined plate away from the connecting plate and matching the upper surface of the rail bottom of the steel rail, and a waist hole is arranged at the joint of the connecting plate and the inclined plate, one end of the threaded column of the adjusting bolt is fixed on the mounting base, the other end penetrates through and extends out of the waist hole, and a nut is arranged on the extending end of the other end, and the diameter of the waist hole is larger than the diameter of the threaded column.

[0009] Preferably, the bottom of one end of the inclined plate away from the connecting plate is connected to the mounting base through a spring.

[0010] Preferably, the tail end limiting seat comprises a cushion seat, and lead pins are arranged on the two sides of the cushion seat and used to mount the cushion seat on the machining platform through bolts, and limiting plates are arranged on the two sides of the cushion seat and used to limit the two sides of the steel rail special-shaped section.

[0011] Compared with the prior art, the utility model has the advantages that:

[0012] 1. The steel rail milling fixing tool described in the utility model can magnetically attract and clamp the rail bottom of the steel rail standard section through the electromagnetic base, abut against the rail waist of the steel rail through the threaded jacking column of the resisting plate to make one side of the rail waist match the clamping hook strip of the electromagnetic base, ensure better fixing effect, pad the rail bottom through the heightening base, limit the steel rail through the rail bottom limiting plate, adjust the adjusting bolt through the movable single-side clamp to make the connecting plate and the inclined plate close to or away from the mounting base, drive the clamping hook to press or release the upper surface of the rail bottom of the steel rail special-shaped section, limit the two sides of the steel rail special-shaped section through the tail end limiting seat, further reduce the vibration, reduce the milling error, and ensure the finished product quality of the steel rail. BRIEF DESCRIPTION OF DRAWINGS

[0013] Figure 1 It is a three-dimensional structure schematic view of the utility model;

[0014] Figure 2 It is a part three-dimensional structure assembly schematic view of the resisting plate and the electromagnetic base;

[0015] Figure 3The schematic view of the three-dimensional structure of the part of the heightening base;

[0016] Figure 4 The schematic view of the three-dimensional structure of the part of the movable single-side clamp;

[0017] Figure 5 The schematic view of the front structure of the part of the movable single-side clamp;

[0018] Figure 6 The schematic view of the three-dimensional structure of the part of the tail end limiting base;

[0019] In the figure: 1, gantry milling machine; 2, machining platform; 3, tail end limiting base; 4, movable single-side clamp; 5, heightening base; 6, steel rail; 7, abutting plate; 8, electromagnetic base; 9, clamping hook strip; 10, threaded jacking column; 501, cushion block; 502, rail bottom limiting plate; 401, main shaft; 402, mounting base; 403, connecting plate; 404, adjusting bolt; 405, inclined plate; 406, clamping hook; 407, spring; 301, cushion base; 302, pin; 303, limiting plate. DETAILED DESCRIPTION

[0020] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.

[0021] Please refer to Figures 1-6 The present application provides the following technical solutions: a steel rail milling fixing tool, comprising a gantry milling machine 1 and a machining platform 2 arranged on the gantry milling machine 1, the machining platform 2 clamping a steel rail 6, the machining platform 2 being provided with a plurality of clamping tools and at least one tail end limiting base 3, a movable single-side clamp and a heightening base 5, the plurality of clamping tools and the at least one tail end limiting base 3, the movable single-side clamp 4 and the heightening base 5 cooperating to fix the steel rail 6.

[0022] The steel rail 6 comprises a standard section and a special-shaped section, the standard section being clamped and limited by a clamping tool, the heightening base 5 being installed at the bottom of the connecting part of the standard section and the special-shaped section of the steel rail 6, the movable single-side clamp 4 clamping and pressing the lower part of the special-shaped section of the steel rail 6, and the tail end limiting base 3 limiting the part close to the end face of the lower part of the special-shaped section of the steel rail 6.

[0023] Specifically, the clamping tool includes an electromagnetic base 8 installed on the machining platform 2 and a resisting plate 7 installed on one side of the electromagnetic base 8, and the side of the electromagnetic base 8 away from the resisting plate 7 is provided with a hook strip 9 which is in close contact with the rail bottom of the steel rail 6, and the resisting plate 7 is threadedly connected with a threaded jacking column 10 for abutting against the rail waist of the steel rail 6 to make one side of the steel rail 6 in close contact with the electromagnetic base 8 and the hook strip 9 on the electromagnetic base 8, thereby ensuring better fixing effect.

[0024] Specifically, the cushion seat 5 includes a cushion block 501 installed on the machining platform 2 and a rail bottom limiting plate 502 provided on one side of the top of the cushion block 501, the cushion block 501 is in close contact with the lower bottom surface of the rail bottom of the steel rail 6, and the rail bottom limiting plate 502 is in the shape of a Chinese character “7” and is in close contact with the upper surface of the rail bottom of the steel rail 6, thereby reducing the vibration generated when the steel rail 6 is milled.

[0025] Specifically, the movable single-side clamp 4 includes a mounting base 402 installed on the machining platform 2, one end of the mounting base 402 is hingedly connected with a pressing hook, one end of the pressing hook is matched with the upper surface of the rail bottom of the special-shaped section of the steel rail 6, a waist hole is arranged on the pressing hook, an adjusting bolt 404 is arranged on the mounting base 402, one end of the adjusting bolt 404 is fixed on the mounting base 402, the other end of the adjusting bolt 404 penetrates through and extends out of the waist hole, and the nut of the adjusting bolt 404 is located on the upper surface of the pressing hook, so as to press or relax the upper surface of the pressing hook, so that the pressing hook is close to or away from the upper surface of the rail bottom of the special-shaped section of the steel rail 6.

[0026] The pressing hook includes a connecting plate 403 connected with a main shaft 401, one end of the connecting plate 403 away from the main shaft 401 is connected with an inclined plate 405, the top of one end of the inclined plate 405 away from the connecting plate 403 is provided with a hook 406 in close contact with the upper surface of the rail bottom of the special-shaped section of the steel rail 6, a waist hole is arranged at the joint of the connecting plate 403 and the inclined plate 405, one end of the threaded column of the adjusting bolt 404 is fixed on the mounting base 402, the other end of the threaded column penetrates through and extends out of the waist hole, the nut is arranged on the extending end of the threaded column, the diameter of the waist hole is larger than the diameter of the threaded column, and the bottom of one end of the inclined plate 405 away from the connecting plate 403 is connected with the mounting base 402 through a spring 407.

[0027] The adjusting bolt 404 comprises two parts, a threaded column fixedly connected with the mounting base 402, the threaded column penetrating through and passing through the waist hole, that is, the connecting plate 403 and the inclined plate 405 are connected at a position provided with a waist hole for the threaded column to extend out, and the waist hole has a diameter larger than the threaded column, and a nut is threadedly connected to the threaded column extending out of the waist hole, by screwing the nut, the nut presses the connecting plate 403 and the inclined plate 405, so that the connecting plate 403 and the inclined plate 405 are close to or away from the mounting base 402, thereby driving the clamping hook 406 to press or release the upper surface of the rail bottom of the special-shaped section of the rail 6, and the waist hole having a diameter larger than the threaded column ensures that the connecting plate 403 and the inclined plate 405 have a certain gap with the threaded column, so that when the connecting plate 403 and the inclined plate 405 are close to or away from the mounting base 402, the connecting plate 403 and the inclined plate 405 do not interfere with the threaded column;

[0028] The main shaft 401 functions to make the end portions of the connecting plate 403 and the inclined plate 405 in a movable hinged state, and by adjusting the position of the nut on the threaded column, the nut presses or releases the connecting plate 403 and the inclined plate 405, when the connecting plate 403 and the inclined plate 405 are pressed, the clamping hook is close to the mounting base 402, and when released, the spring 407 pushes the clamping hook away from the mounting base 402 by the elastic force of the spring itself, so that the clamping hook 406 can release the upper surface of the rail bottom of the special-shaped section of the rail 6, and after the nut is released, the clamping hook can be reset, thereby ensuring the fixing or releasing of the rail 6.

[0029] Specifically, the tail end limiting seat 3 comprises a pad seat 301, lead pins 302 are arranged on both sides of the pad seat 301, the lead pins 302 are used to install the pad seat 301 on the machining platform 2 through bolts, and limiting plates 303 are arranged on both sides of the pad seat 301 to limit the two sides of the special-shaped section of the rail 6, thereby limiting the two sides of the special-shaped section of the rail 6 and further reducing vibration during milling.

[0030] By adopting the above technical scheme, the rail milling fixing tool described in the utility model can better fix the rail 6 by using multiple electromagnetic seats 8 to magnetically attract and clamp the rail bottom of the standard section of the rail 6, and by using the threaded top column 10 on the resisting plate 7 to press against the rail waist of the rail 6, so that one side of the rail waist is attached to the clamping hook strip 9 on the electromagnetic seat 8, the rail 6 is then padded by the pad seat 5, and the rail 6 is limited by the rail bottom limiting plate 502, the adjusting bolt 404 is adjusted by the movable one-side clamp 4, so that the connecting plate 403 and the inclined plate 405 are close to or away from the mounting base 402, thereby driving the clamping hook 406 to press or release the upper surface of the rail bottom of the special-shaped section of the rail 6, so as to fix the rail 6, and then the two sides of the special-shaped section of the rail 6 are limited by the tail end limiting seat 3, thereby further reducing vibration, reducing milling errors, and ensuring the quality of the finished product of the rail 6.

[0031] The utility model discloses a working principle and use flow: the steel rail milling fixed frock described in the utility model, when needing to mill the steel rail 6, first installs multiple electromagnetic seats 8 and the resisting plate 7 respectively on the processing platform 2 of gantry milling machine 1, then installs tail end limit seat 3, movable single -sided clamp 4 and pad seat 5 on the processing platform 2 in proper order, and the above parts are installed and set up in a character, then hoists the steel rail 6 to the processing platform 2, then places it on electromagnetic seat 8, tail end limit seat 3, movable single -sided clamp 4 and pad seat 5, then manually adjusts the position of steel rail 6, through the threaded jacks 10 on the resisting plate 7, the rail waist of steel rail 6 is pressed, makes its one side adhere to the catch strip 9 on electromagnetic seat 8, then opens electromagnetic seat 8, makes it clamp steel rail 6, then through pad seat 5, the bottom of steel rail 6 is padded, and simultaneously through rail bottom limit board 502, the steel rail 6 is positioned, through movable single -sided clamp 4, adjusts screw bolt 404, makes connecting plate 403 and inclined plate 405 approach or away from mounting base 402, to drive catch 406 to compress or loosen the special-shaped section rail bottom upper surface of steel rail 6, to this to guarantee the fixation of steel rail 6, then through tail end limit seat 3, the special-shaped section both sides of steel rail 6 are positioned, further reduce its vibration, make the milling error of reduced, guarantee the finished product quality of steel rail 6, thus complete.

[0032] Although the embodiments of the utility model have been shown and described, it can be understood by those skilled in the art that various changes, modifications, replacements and variations can be made to these embodiments without departing from the principles and spirits of the utility model, and the scope of the utility model is defined by the appended claims and their equivalents.

Claims

1. A rail milling fixture, characterized by: It comprises a tail end limiting seat (3), a movable single-side clamp (4) and a cushioning seat (5); The cushioning seat (5) comprises a cushioning block (501) located below the standard section of the steel rail (6) and used for supporting the steel rail (6); The movable single-side clamp (4) comprises a mounting base (402) and a clamping hook (406) hinged to the mounting base (402), and the two work together to press and clamp the lower part of the special-shaped section of the steel rail (6). The tail end limiting seat (3) comprises a cushioning seat (301) and limiting plates (303) on both sides of the cushioning seat (301), which support the rail bottom of the special-shaped section of the steel rail (6) and limit the sidewall of the rail bottom.

2. A rail milling fixture according to claim 1, characterised in that: The cushioning seat (5) comprises a cushioning block (501) mounted on the processing platform (2) and a rail bottom limiting plate (502) arranged on one side of the top of the cushioning block (501), wherein the cushioning block (501) is in close contact with the lower bottom surface of the rail bottom of the steel rail (6), and the rail bottom limiting plate (502) is in the shape of a Chinese character "7" and is in close contact with the upper surface of the rail bottom of the steel rail (6).

3. A rail milling fixture according to claim 1, wherein: The movable single-side clamp (4) comprises a mounting base (402) mounted on the processing platform (2), wherein one end of the mounting base (402) is hinged to a pressing hook, one end of the pressing hook is matched with the upper surface of the rail bottom of the special-shaped section of the steel rail (6), a waist hole is arranged on the pressing hook, an adjusting bolt (404) is arranged on the mounting base (402), one end of the adjusting bolt (404) is fixed on the mounting base (402), the other end of the adjusting bolt (404) penetrates through and extends out of the waist hole, and the nut of the adjusting bolt (404) is located on the upper surface of the pressing hook, which is used to press or relax the upper surface of the pressing hook so that the pressing hook is close to or away from the upper surface of the rail bottom of the special-shaped section of the steel rail (6).

4. A rail milling fixture according to claim 3, wherein: The pressing hook comprises a connecting plate (403) connected with a main shaft (401), one end of the connecting plate (403) away from the main shaft (401) is connected with an inclined plate (405), the top of one end of the inclined plate (405) away from the connecting plate (403) is provided with a clamping hook (406) matched with the upper surface of the rail bottom of the special-shaped section of the steel rail (6), a waist hole is arranged at the joint of the connecting plate (403) and the inclined plate (405), one end of the threaded column of the adjusting bolt (404) is fixed on the mounting base (402), the other end of the threaded column penetrates through and extends out of the waist hole, a nut is mounted on the extending end of the threaded column, and the diameter of the waist hole is greater than the diameter of the threaded column.

5. A rail milling fixture as claimed in claim 4, wherein: The bottom of one end of the inclined plate (405) away from the connecting plate (403) is connected with the mounting base (402) through a spring (407).

6. A rail milling fixture as claimed in claim 1, characterized in that: The tail end limiting seat (3) comprises a cushioning seat (301), the two sides of the cushioning seat (301) are respectively provided with pins (302), the pins (302) are used for mounting the cushioning seat (301) on the processing platform (2) through bolts, and the two sides of the cushioning seat (301) are respectively provided with limiting plates (303) for limiting the two sides of the special-shaped section of the steel rail (6).

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