CN216027108U

CN216027108U - double-R-bond hard alloy pinch roll

Info

Publication number: CN216027108U
Application number: CN202122672794.4U
Authority: CN
Inventors: 陈恺; 屠永宁; 谢地; 谢英
Original assignee: Zhuzhou Cemented Carbide Group Co Ltd
Current assignee: Zhuzhou Cemented Carbide Group Co Ltd
Priority date: 2021-11-03
Filing date: 2021-11-03
Publication date: 2022-03-15
Anticipated expiration: 2031-11-03

Abstract

The utility model discloses a double-R-key hard alloy pinch roll, belongs to the technical field of high-speed wire steel rolling, and solves the problems that the existing single-key pinch roll is inconvenient to install, low in transmission efficiency, easy to loosen during equipment operation and poor in stability. The pinch roll is integrally of an annular structure, a guide groove along the circumferential direction of an outer ring is formed in the excircle of the pinch roll, outer chamfers for transition are machined on the guide groove and two axial end faces of the pinch roll, the outer chamfers are R angles, the end faces of the pinch roll and the outer ring face are in smooth transition, a double R key and a 5 x 45 degree inner mounting hole chamfer structure are adopted in a middle mounting hole of the pinch roll, the double R key has the effect of circumferential fixation, the 5 x 45 degree inner mounting hole chamfer has the guiding effect, so that the pinch roll is convenient to mount and dismount on a shaft sleeve, and the pinch roll is firm and stable to mount on the shaft sleeve, is not easy to loosen and is high in transmission efficiency.

Description

double-R-bond hard alloy pinch roll

Technical Field

The utility model belongs to the technical field of high-speed wire steel rolling, and particularly relates to a double-R-key hard alloy pinch roll.

Background

The high-speed wire steel is an important variety in steel products and has a very wide application range. The steel wire is produced by a full-continuous high-speed torsion-free wire rod finishing mill group and a cooling control system; the pinch roll is used for helping the head of the wire rod rolled by the finishing mill to enter the laying head for coiling, and preventing the tail of the wire rod running at a high speed from being accelerated to cause a steel pile blockage accident due to separation constraint when the tail of the wire rod runs out of the finishing mill.

With the continuous improvement of equipment and the adjustment of national standards, the rolling outlet speed is continuously increased to reach more than 100 m/s. Higher requirements are also put forward for the laying head matched with the finishing mill and the front pinch roll of the laying head. The main stream pinch rolls in the current market are mostly internally provided with single keys, so that the pinch rolls are inconvenient to install, low in transmission efficiency, easy to loosen during equipment operation and poor in stability.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a double-R-bond hard alloy pinch roll, which is used for solving the following technical problems:

the single bond pinch roll of present solution, the installation is not convenient, and transmission efficiency is not high to easily appear not hard up when equipment operation, the poor problem of stability.

In order to achieve the purpose, the utility model provides the following technical scheme:

the double-R-key hard alloy pinch roll is integrally of an annular structure, a guide groove is formed in the outer annular surface of the pinch roll along the circumferential direction, and two ends of the guide groove are in chamfer transition with the outer part of the end surface of the pinch roll;

the inner ring surface of the pinch roll forms a circular mounting hole, at least two concave R keys are axially arranged on the inner ring surface along the inner ring of the pinch roll, and the inner ring surface and the end surface of the pinch roll are in chamfer transition at an angle of 45 degrees.

Further scheme: the cross section of the guide groove is arc-shaped.

Further scheme: and the transition outer chamfer angle between the guide groove and the end surface of the pinch roll is an R angle.

Further scheme: the number of the R bonds formed on the inner ring surface is two, and the two R bonds are positioned at two opposite ends of the inner ring surface.

Further scheme: the 45-degree chamfer is a 5-by-45-degree chamfer.

Compared with the prior art, the utility model has the beneficial effects that:

the structure of double R keys and the chamfer angle of the mounting hole in the 5X 45 degrees is adopted in the middle mounting hole of the pinch roll, the double R keys have the function of circumferential fixation, and the chamfer angle of the mounting hole in the 5X 45 degrees has the guiding function, so that the installation and the disassembly on the shaft sleeve are convenient, and the installation on the shaft sleeve is firm, stable, not easy to loosen and high in transmission efficiency.

The double-R-key pinch roll is embedded with the shaft sleeve, and compared with a single-R-key pinch roll, the double-R-key pinch roll has lower assembling pressure, can avoid slide rolls, can prevent steel drawing and indentation caused by overlarge pressure, reduces abrasion of the pinch roll, and prolongs the service life.

Drawings

In order to facilitate understanding for those skilled in the art, the present invention will be further described with reference to the accompanying drawings.

Fig. 1 is a schematic overall structure diagram provided in the embodiment of the present invention.

In the figure: 1. a guide groove; 2. chamfering at 45 degrees; 3. a circular mounting hole; 4. r is a bond.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the detailed description and specific examples, while indicating the preferred embodiment of the utility model, are intended for purposes of illustration only and are not intended to limit the scope of the utility model. The components of embodiments of the present invention generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations.

Thus, the following detailed description of the embodiments of the present invention, presented in the figures, is not intended to limit the scope of the utility model, as claimed, but is merely representative of selected embodiments of the utility model. All other embodiments, which can be derived by a person skilled in the art from the embodiments of the present invention without making any creative effort, shall fall within the protection scope of the present invention.

Referring to fig. 1, in the embodiment of the present invention, a double-R-key cemented carbide pinch roll is of an annular structure as a whole, a guide groove 1 is formed in an outer circle of the pinch roll along an outer ring circumferential direction, outer chamfers for transition are machined on the guide groove 1 and two axial end faces of the pinch roll, and the outer chamfers are 45 ° R angles, so that the end faces of the pinch roll and the outer ring face are in smooth transition;

in the embodiment, a circular mounting hole 3 is formed in the inner ring surface of the pinch roll, two concave R keys 4 are axially arranged on the inner ring surface along the inner ring of the pinch roll, and the two R keys 4 are positioned at two opposite ends of the inner ring surface; in another embodiment, 4 inward-concave R keys 4 are arranged on the inner ring surface along the axial direction of the inner ring of the pinch roll, and the 4R keys 4 are uniformly distributed along the circumferential direction of the inner ring surface.

The inner ring surface and the end surface of the pinch roll are in transition through machining of 45-degree chamfers 2, the 45-degree chamfers 2 are 5-45-degree chamfers, so that the shaft sleeve is convenient to mount and dismount, and the transmission efficiency is high and the transmission device is firm, stable and not prone to loosening and can be designed into 3-45-degree chamfers, 4-45-degree chamfers and 6-45-degree chamfers according to requirements.

The working principle is as follows:

the high-speed wire pinch roll consists of an upper roll and a lower roll, is driven by a speed regulating motor to increase the speed internally for transmission, and is controlled by a cylinder during working for adjusting the clamping force. The device can provide a stable pulling force for the rolled piece, prevent the rolled piece from shaking in the water tank, and control the speed of the rolled piece entering the laying head, thereby achieving the purpose of controlling the material type.

The double-R key 4 is embedded with the shaft sleeve, and compared with the single-R key 4, the pinch roll has lower assembly pressure, can avoid sliding rolls, prevent steel drawing and indentation caused by overlarge pressure, reduce abrasion of the pinch roll and prolong the service life. Can bear the working conditions of the rolling temperature of 650-1050 ℃ and the rolling speed of 60-120 m/s.

The foregoing is merely exemplary and illustrative of the present invention, and various modifications, additions and substitutions of the specific embodiments described herein may be made by those skilled in the art without departing from the scope of the utility model as defined in the accompanying claims.

Claims

1. The double-R-key hard alloy pinch roll is characterized in that the pinch roll is of an annular structure as a whole, a guide groove (1) is formed in the outer annular surface of the pinch roll along the circumferential direction, and two ends of the guide groove (1) are in chamfer transition with the outer part of the end surface of the pinch roll;

the inner ring surface of the pinch roll forms a circular mounting hole (3), at least two concave R keys (4) are axially arranged on the inner ring surface along the inner ring of the pinch roll, and the inner ring surface and the end surface of the pinch roll are in transition by a 45-degree chamfer (2).

2. A double R-bond cemented carbide pinch roll according to claim 1, characterized in that the cross section of the guide groove (1) is circular arc.

3. The double R-bond cemented carbide pinch roll according to claim 1, characterized in that the transition of the guide groove (1) and the end surface of the pinch roll is chamfered at an angle R.

4. The double-R-key hard alloy pinch roll according to claim 1, characterized in that the number of the R keys (4) arranged on the inner ring surface is two, and the two R keys (4) are positioned at two opposite ends of the inner ring surface.

5. A double R-key cemented carbide pinch roll according to claim 4, characterized in that the 45 ° chamfer (2) is a 5 x 45 ° chamfer.