CN217941414U

CN217941414U - Wear-resistant and crack-resistant pulling-straightening roller

Info

Publication number: CN217941414U
Application number: CN202123247132.9U
Authority: CN
Inventors: 仇圣中
Original assignee: Yangzhou Xionglian Metallurgy Technology Co ltd
Current assignee: Yangzhou Xionglian Metallurgy Technology Co ltd
Priority date: 2021-12-22
Filing date: 2021-12-22
Publication date: 2022-12-02
Anticipated expiration: 2031-12-22

Abstract

The utility model relates to a draw and rectify roller technical field, especially relate to a wear and tear resistant chap resistant draw and rectify roller. The wear-resistant and crack-resistant pulling-straightening roller comprises a pulling-straightening roller body, wherein a hollow cavity is formed in the middle of the pulling-straightening roller body, insertion cavities are formed in two ends of the pulling-straightening roller body, and steel balls are arranged in the insertion cavities; the roll shaft is positioned on the pulling and straightening roller body, and a steel bar is fixedly embedded on the shaft wall of the roll shaft. The utility model provides a wear and tear resistant cracked roller of straightening that draws, when roller transmission power received the torsional force of straightening the roll body, the torsion that the roller received disperses on each billet, and the billet with draw the steel ball in straightening the roll body to match each other, rolling contact, consequently with torsion dispersion to each steel ball on, follow-up gathering again draws on straightening the roll body, billet and steel ball that this application was add can avoid the roller to appear twisting off because torsion is too big in the twinkling of an eye when the torsion transmission, impaired problem, the wearing and tearing of roller and the straightening roll body have also been reduced simultaneously.

Description

Wear-resistant and crack-resistant pulling-straightening roller

Technical Field

The utility model relates to a draw and rectify roller technical field, especially relate to a wear and tear resistant cracked roll of drawing and rectifying.

Background

The common stretching straightener of the strip steel continuous hot galvanizing unit has three forms of two bending and two straightening, two bending and one straightening and one bending and one straightening, wherein the two bending and one straightening type is most applied. The two-bending one-straightening stretching straightener mainly comprises two groups of bending roller sets, a group of straightening roller sets, a plurality of steering rollers, a group of roller changing devices, a roller set lifting system and the like.

In the use of drawing and straightening machine, the torque force between the drawing and straightening roller body and the roller shaft easily leads to the phenomenon that the transmission shaft is twisted off and damaged because of the excessive instant torque force, and meanwhile, if the heat dissipation effect of the roller shaft is not good and the temperature is not reduced timely, the drawing and straightening roller is easy to crack.

Therefore, it is necessary to provide a new wear and crack resistant withdrawal and straightening roll to solve the above technical problems.

SUMMERY OF THE UTILITY MODEL

In order to solve the technical problem, the utility model provides a wear-resistant and crack-resistant withdrawal and straightening roller.

The utility model provides a wear and tear resistant cracked roller of withdrawing includes:

the middle part of the pulling and straightening roller body is provided with a hollow cavity, the two ends of the pulling and straightening roller body are provided with insertion cavities, and a plurality of groups of movably-mounted steel balls are arranged in the insertion cavities;

the roll shaft is positioned on the pulling and straightening roller body, and a plurality of steel bars which are distributed in an annular shape are fixedly embedded on the shaft wall of the roll shaft.

Preferably, the diameter of the inserting cavity is smaller than that of the hollow cavity, a plurality of limit grooves distributed in an annular mode are formed in the inserting cavity, spherical cavities communicated with the limit grooves are formed in the pulling and straightening roller bodies on two sides of each limit groove, and a plurality of steel balls in contact with each spherical cavity are stored in each spherical cavity.

Preferably, one third of the ball body of the steel ball extends into the limiting groove.

Preferably, the arc-shaped grooves are formed in two sides of the steel bar on the roll shaft, and the arc-shaped grooves are matched with the balls extending out of the steel balls.

Preferably, the roll walls on two sides of the pulling and straightening roll body are provided with annular grooves, and each annular groove is internally provided with a plurality of heat dissipation holes which are distributed annularly and are communicated with the hollow cavity.

Preferably, the roll shaft penetrates through a hollow cavity formed in the pulling and straightening roller body and is inserted into the cavity, and shaft covers fixedly connected with two ends of the pulling and straightening roller body are sleeved on two sides of the roll shaft.

Preferably, the pulling and straightening roller body is sprayed with a metal ceramic composite material by supersonic flame.

Compared with the prior art, the utility model provides a stand wear and tear resistant chap draw and rectify roller has following beneficial effect:

1. the steel bars and the steel balls are additionally arranged in the utility model, so that the problems of twist-off and damage of the roll shaft caused by excessive instant torsion during torsion transmission of the roll shaft can be avoided, and meanwhile, the abrasion between the roll shaft and the pulling and straightening roll body is reduced;

2. the utility model discloses because be provided with the billet on the roller, consequently draw and rectify the heat on the roll body and can dispel the heat to the roller fast to consequently draw and rectify the louvre of seting up on the roll body and well cavity intercommunication each other, thereby make the heat on the roll body of drawing and rectifying can arrange outside fast, consequently the effectual roll of drawing and rectifying of having protected.

Drawings

Fig. 1 is a schematic structural view of a preferred embodiment of the wear-resistant and crack-resistant withdrawal and straightening roll provided by the present invention.

Fig. 2 is a cross-sectional internal structural view of the pulling and straightening roller body shown in fig. 1.

Fig. 3 is a schematic cross-sectional view of the pulling and straightening roller body shown in fig. 2.

Fig. 4 is a schematic structural view of the roll shaft shown in fig. 2.

Fig. 5 is an enlarged schematic view of a portion a shown in fig. 3.

The reference numbers in the figures: 1. pulling and straightening roller bodies; 1a, a hollow cavity; 1b, inserting into the cavity; 1c, a limiting groove; 1d, a spherical cavity; 1e, an annular groove; 1f, heat dissipation holes; 2. a roll shaft; 3. a steel bar; 3a, an arc-shaped groove; 4. steel balls; 5. and (4) a shaft cover.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

The following detailed description is provided for the specific embodiments of the present invention.

Referring to fig. 1 to 5, an embodiment of the present invention provides a wear-resistant and crack-resistant pulling and straightening roll, which includes: a pulling and straightening roller body 1 and a roller shaft 2.

In the embodiment of the present invention, please refer to fig. 1, fig. 2, fig. 4 and fig. 5, a hollow cavity 1a is formed in the middle of the pulling and straightening roller body 1, and both ends of the pulling and straightening roller body 1 are both provided with an insertion cavity 1b, a plurality of groups of movably mounted steel balls 4 are arranged in the insertion cavity 1b, specifically, the diameter of the insertion cavity 1b is smaller than that of the hollow cavity 1a, a plurality of annularly distributed limiting grooves 1c are formed in the insertion cavity 1b, spherical cavities 1d communicated with the limiting grooves 1c are formed in the pulling and straightening roller bodies 1 on both sides of each limiting groove 1c, a plurality of steel balls 4 in contact are stored in each spherical cavity 1d, and one third of the balls of the steel balls 4 extends into the limiting groove 1 c;

the roller 2 is located draw and rectify on the roll body 1, specifically be, roller 2 passes and draws the well cavity 1a that rectify roll body 1 was seted up and insert and establish chamber 1b, just the both sides of roller 2 all overlap and be equipped with draw and rectify roll body 1 both ends fixed connection's shaft cover 5, just fixed gomphosis has many annular distribution's billet 3 on the axle wall of roller 2, arc wall 3a has all been seted up to 3 both sides of the last billet of roller 2, just the spheroid that arc wall 3a and steel ball 4 extend out matches each other.

It should be noted that: roll shaft 2 receives when pulling out the torsional force of straightening roll body 1 at transmission power, the torsion that roll shaft 2 received disperses on each billet 3, and billet 3 because with pull out the spheroid that each steel ball 4 in the straightening roll body 1 extended out match each other, rolling contact, consequently with torsion dispersion to on each steel ball 4, follow-up gathering again pulls out straightening roll body 1 on, compare and draws straightening roll, billet 3 and steel ball 4 that this application was add, can avoid roll shaft 2 because torsion is too big in the twinkling of an eye and lead to roll shaft 2 to appear twisting-off when torsion transmission, impaired problem, the while has also reduced roll shaft 2 and has pulled out the wearing and tearing of straightening roll body 1.

In the embodiment of the present invention, please refer to fig. 1 and fig. 3, the roll walls at both sides of the pulling and straightening roll body 1 are respectively provided with an annular groove 1e, and each of the annular grooves 1e is internally provided with a plurality of heat dissipation holes 1f which are distributed annularly and are mutually communicated with the hollow cavity 1 a.

It should be noted that: because be provided with billet 3 on the roller 2, consequently draw and rectify the heat on the roll body 1 and can dispel the heat to roller 2 fast to consequently draw and rectify louvre 1f and well cavity 1a intercommunication that set up on the roll body 1, thereby make the heat on the roll body 1 of drawing and rectifying to arrange outward fast, consequently the effectual roller of drawing and rectifying of having protected.

The pulling and straightening roller body 1 is coated with the metal ceramic composite material by supersonic flame spraying, so that the service cycle of the pulling and straightening roller is greatly prolonged.

The utility model provides a stand wear and tear resistant cracked straightening roller's theory of operation as follows:

when the roll shaft 2 is subjected to the torsional force of the pulling and straightening roll body 1 after power is transmitted, the torsion force applied to the roll shaft 2 is dispersed to each steel bar 3, and the steel bars 3 are matched with and in rolling contact with the spheres extending from each steel ball 4 in the pulling and straightening roll body 1, so that the torsion force is dispersed to each steel ball 4 and is subsequently accumulated on the pulling and straightening roll body 1, compared with the pulling and straightening roll, the steel bars 3 and the steel balls 4 which are additionally arranged in the pulling and straightening roll body can avoid the problem that the roll shaft 2 is twisted off and damaged due to the fact that the instant torsion force is too large when the torsion force is transmitted, and meanwhile, the abrasion of the roll shaft 2 and the pulling and straightening roll body 1 is also reduced;

because be provided with billet 3 on the roller 2, consequently draw and rectify the heat on the roll body 1 and can dispel the heat to roller 2 fast to consequently draw and rectify louvre 1f and well cavity 1a intercommunication that set up on the roll body 1, thereby make and draw and rectify the heat on the roll body 1 and can arrange outward fast, consequently the effectual roll of straightening of having protected.

The above-mentioned only be the embodiment of the present invention, not consequently the restriction of the patent scope of the present invention, all utilize the equivalent structure or equivalent flow transform made of the content of the specification and the attached drawings, or directly or indirectly use in other relevant technical fields, all including in the same way the patent protection scope of the present invention.

Claims

1. A wear and tear resistant tension leveler roller comprising:

the device comprises a pulling and straightening roller body (1), wherein a hollow cavity (1 a) is formed in the middle of the pulling and straightening roller body (1), insertion cavities (1 b) are formed in two ends of the pulling and straightening roller body (1), and a plurality of groups of movably-mounted steel balls (4) are arranged in the insertion cavities (1 b);

the roll shaft (2) is positioned on the pulling and straightening roller body (1), and a plurality of steel bars (3) which are distributed in an annular shape are fixedly embedded on the shaft wall of the roll shaft (2).

2. The wear-resistant and crack-resistant pulling and straightening roller as claimed in claim 1, characterized in that the diameter of the insertion cavity (1 b) is smaller than that of the hollow cavity (1 a), a plurality of annularly distributed limiting grooves (1 c) are formed in the insertion cavity (1 b), spherical cavities (1 d) communicated with the limiting grooves (1 c) are formed in the pulling and straightening roller bodies (1) on two sides of each limiting groove (1 c), and a plurality of steel balls (4) in contact are stored in each spherical cavity (1 d).

3. The wear-resistant and crack-resistant withdrawal and straightening roll according to claim 2, characterized in that one third of the ball bodies of the steel balls (4) extend into the limiting groove (1 c).

4. The wear-resistant and crack-resistant pulling straightening roller as claimed in claim 3, characterized in that arc-shaped grooves (3 a) are formed in both sides of the steel bar (3) on the roller shaft (2), and the arc-shaped grooves (3 a) are matched with the spheres extending from the steel balls (4).

5. The wear-resistant and crack-resistant pulling and straightening roller according to claim 1, characterized in that the roller walls on both sides of the pulling and straightening roller body (1) are provided with annular grooves (1 e), and each annular groove (1 e) is provided with a plurality of heat dissipation holes (1 f) which are distributed annularly and are communicated with the hollow cavity (1 a).

6. The wear-resistant and crack-resistant pulling and straightening roller according to claim 1, characterized in that the roller shaft (2) passes through the hollow cavity (1 a) formed in the pulling and straightening roller body (1) and the insertion cavity (1 b), and both sides of the roller shaft (2) are sleeved with shaft covers (5) fixedly connected with both ends of the pulling and straightening roller body (1).

7. The wear-resistant and crack-resistant pulling and straightening roll as claimed in claim 1, characterized in that the pulling and straightening roll body (1) is coated with a cermet composite material by supersonic flame spraying.