CN204602904U

CN204602904U - A kind of heavy rail dedicated integral smoothing roll

Info

Publication number: CN204602904U
Application number: CN201520310061.8U
Authority: CN
Inventors: 解光文; 付国龙; 顾双全; 滕飞; 赵利永
Original assignee: Hebei Iron And Steel Co Ltd Handan Branch
Current assignee: Hebei Iron And Steel Co Ltd Handan Branch
Priority date: 2015-05-14
Filing date: 2015-05-14
Publication date: 2015-09-02
Anticipated expiration: 2025-05-14

Abstract

The utility model relates to the overall smoothing roll of a kind of heavy rail straightening, belong to heavy rail finishing technique field, for solving the technical problem of existing combined straightening roller aperture type quick abrasion, straightening process instability, technical scheme is: comprise upper straightening roll and lower smoothing roll, upper and lower smoothing roll is cylindrical integral structure, have collars centre bore along its axis, centre bore is sheathed in the rotating shaft of transmission device, offers heavy rail straightening hole along smoothing roll roll surface circumference.Combined straightening roller in prior art is become integral type smoothing roll by the utility model, revises upper and lower smoothing roll pass simultaneously, makes it more meet the shape of heavy duty rail head and the flange of rail, and leveling effect is better than prior art smoothing roll leveling effect.The utility model is installed on heavy rail line level aligning unit, structure simple rigid, and integral rigidity is better, and pass is stablized, and can effectively improve straightening process stability, decreases the generation of roll change in advance, improves Operational preparation for roller efficiency, remarkable in economical benefits.

Description

A kind of heavy rail dedicated integral smoothing roll

Technical field

The utility model relates to the overall smoothing roll of a kind of heavy rail straightening, belongs to heavy rail finishing technique field.

Background technology

In modern Heavy-rail Production, the flat vertical compound straightening technique of general employing carries out long chi aligning to rail, to reach the requirement of high straightness.Flat vertical compound roll leveller group is made up of Horizontal weld type straightener and vertical roller straightener, after aligning with horizontal straightener rail vertical direction, then carries out supplementing aligning with vertical straightener in the horizontal direction.Wherein a set of smoothing roll of horizontal straightener forms by 9, comprises 4 identical top rolls, acts on rail head, and 5 identical lower rolls, act on the flange of rail, and upper and lower smoothing roll is combined type.Combined straightening roller is formed by straightening ring, both sides back-up ring and sleeve combination, and straightening ring and shield ring sleeve, at one end on screwed axle sleeve, are adjusted its axial location by pad, compressed by screw thread; During use, be enclosed within by axle sleeve in the rotating shaft of connection for transmission device, the pass formed by straightening ring and back-up ring is applied active force to the top and bottom of rail and side respectively and aligns.Combined straightening roller also exists following problem in heavy rail straightening is produced:

(1) because the back-up ring of combined straightening roller and straightening ring adopt spiral shell button to be pressed together, back-up ring easily loosens by side force and vibration influence, and the speed occurring to loosen is far above pass collocation speed, causes smoothing roll to roll off the production line in advance;

(2) because combined straightening roller rigid is poor, the pass causing back-up ring and straightening ring to be formed is out of shape comparatively large, straightening process poor stability;

(3) need burst to carry out grinding roller reparation after combining roller wearing and tearing, and assembling is comparatively complicated, a large amount of manpower of Operational preparation consumption and time, efficiency is lower.

Utility model content

Technical problem to be solved in the utility model is to provide a kind of heavy rail dedicated integral formula smoothing roll, reorganizing box-like smoothing roll is monoblock type smoothing roll, and design heavy rail straightening hole pass, there is the advantages such as wear-resistant, straightening process is stable, and effectively can improve straightening roller life, solve the defect in background technology.

The technical scheme solved the problems of the technologies described above is:

A kind of heavy rail dedicated integral smoothing roll, comprise upper straightening roll and lower smoothing roll, its improvements are: described smoothing roll is cylindrical integral structure, has collars centre bore along its axis, centre bore is sheathed in the rotating shaft of transmission device, offers heavy rail straightening hole along smoothing roll roll surface circumference.

Above-mentioned a kind of heavy rail dedicated integral smoothing roll, described collars centre bore has keyway.

Above-mentioned a kind of heavy rail dedicated integral smoothing roll, described upper straightening roll roll surface aligning hole hole slot bottom land is circular arc, and arc radius is more than or equal to heavy duty rail head tread arc radius, and arc length is identical with heavy duty rail head tread arc length, and hole slot width is greater than heavy duty rail head width; In convex in the middle part of the hole slot bottom land of lower smoothing roll roll surface aligning hole, hole slot width is greater than heavy rail flange of rail width; Upper straightening roll and lower smoothing roll hole slot angle of sides are between 1:3 ~ 1:5.

Above-mentioned a kind of heavy rail dedicated integral smoothing roll, described upper straightening roll roll surface aligning hole hole slot gullet radius is greater than heavy duty rail head tread arc radius 0 ~ 100mm, and hole slot width exceeds heavy duty rail head width 4 ~ 8mm; In the middle part of the hole slot bottom land of described lower smoothing roll roll surface aligning hole, convex surface convexity is 2 ~ 4mm, and land width is 40 ~ 80mm, and hole slot width is greater than heavy rail flange of rail width 4 ~ 6mm.

The beneficial effects of the utility model:

Combined straightening roller in prior art is become integral type smoothing roll by the utility model, revises upper and lower smoothing roll pass simultaneously, makes it more meet the shape of heavy duty rail head and the flange of rail, and leveling effect is better than prior art smoothing roll leveling effect.The utility model is installed on heavy rail line level aligning unit, structure simple rigid, and integral rigidity is better, and pass is stablized, and can effectively improve straightening process stability, decreases the generation of roll change in advance, improves Operational preparation for roller efficiency, remarkable in economical benefits.

Accompanying drawing explanation

Fig. 1 combines smoothing roll schematic diagram in prior art;

Fig. 2 is the utility model scheme of installation;

Fig. 3 is the utility model smoothing roll cross-sectional;

Fig. 4 is upper straightening roll pass schematic diagram;

Fig. 5 is lower smoothing roll pass schematic diagram.

Be labeled as in figure: 1-upper straightening roll, 2-lower smoothing roll, 3-heavy rail, 4-pad, 5-rotating shaft, 6-keyway, 7-centre bore, 8-straightening ring, 9-back-up ring, 10-axle sleeve, 11-pad, 12-screw thread, A-upper straightening roll pass, B-lower smoothing roll pass.

Detailed description of the invention

Fig. 2-Fig. 4 shows, the utility model smoothing roll is cylindrical integral structure, comprise upper straightening roll 1 and lower smoothing roll 2, the axis of upper straightening roll 1 and lower smoothing roll 2 has collars centre bore 7, centre bore 7 is sheathed in the rotating shaft 5 of transmission device, collars centre bore 7 has the keyway 6 matched with flat key in rotating shaft 5, for fixing smoothing roll, prevent smoothing roll along the circumferential play of rotating shaft 5; Roll surface circumference along upper straightening roll 1 and lower smoothing roll 2 offers heavy rail straightening hole, wherein, upper straightening roll 1 roll surface aligning hole hole slot bottom land is circular arc, arc radius is more than or equal to the rail head tread arc radius 0 ~ 100mm of heavy rail 3,, arc length is identical with the rail head tread arc length of heavy rail 3, and hole slot width is greater than the rail head width 4 ~ 8mm of heavy rail 3, thus ensure rail head circular arc and the hole slot arc contact of heavy rail 3, and rail head side and hole slot sidewall have 2 ~ 4mm gap; In convex in the middle part of the roll surface aligning hole hole slot bottom land of lower smoothing roll 2, convex surface convexity is 2 ~ 4mm, and land width is 40 ~ 80mm, and hole slot width is greater than the flange of rail width 4 ~ 6mm of heavy rail 3; Thus have 40 ~ 80mm contact surface at the bottom of the flange of rail of guarantee heavy rail 3 and hole slot, and the flange of rail side of heavy rail 3 and hole slot sidewall have 2 ~ 3mm gap; The hole slot angle of sides of upper straightening roll 1 and lower smoothing roll 2, between 1:3 ~ 1:5, ensures the good recoverability of pass, and contributes to guiding rail correctly to nip pass.

Claims

1. a heavy rail dedicated integral smoothing roll, comprise upper straightening roll (1) and lower smoothing roll (2), it is characterized by: described smoothing roll is cylindrical integral structure, collars centre bore (7) is had along its axis, centre bore (7) is sheathed in the rotating shaft (5) of transmission device, offers heavy rail straightening hole along smoothing roll roll surface circumference.

2. a kind of heavy rail dedicated integral smoothing roll as claimed in claim 1, is characterized by: described collars centre bore (7) has keyway (6).

3. a kind of heavy rail dedicated integral smoothing roll as claimed in claim 1, it is characterized by: described upper straightening roll (1) roll surface aligning hole hole slot bottom land is circular arc, arc radius is more than or equal to the rail head tread arc radius of heavy rail (3), arc length is identical with the rail head tread arc length of heavy rail (3), and hole slot width is greater than the rail head width of heavy rail (3); In convex in the middle part of the hole slot bottom land of lower smoothing roll (2) roll surface aligning hole, hole slot width is greater than the flange of rail width of heavy rail (3); Upper straightening roll (1) and lower smoothing roll (2) hole slot angle of sides are between 1:3 ~ 1:5.

4. a kind of heavy rail dedicated integral smoothing roll as described in claim 1 or 3, it is characterized by: described upper straightening roll (1) roll surface aligning hole hole slot gullet radius is greater than the rail head tread arc radius 0 ~ 100mm of heavy rail (3), and hole slot width exceeds the rail head width 4 ~ 8mm of heavy rail (3); In the middle part of the hole slot bottom land of described lower smoothing roll (2) roll surface aligning hole, convex surface convexity is 2 ~ 4mm, and land width is 40 ~ 80mm, and hole slot width is greater than the flange of rail width 4 ~ 6mm of heavy rail (3).