CN211052168U

CN211052168U - Extended target ball fixer

Info

Publication number: CN211052168U
Application number: CN201922061995.3U
Authority: CN
Inventors: 徐建峰; 郭立平
Original assignee: Shanghai Dingye Metallurgy Technology Co ltd
Current assignee: Shanghai Dingye Metallurgy Technology Co ltd
Priority date: 2019-11-22
Filing date: 2019-11-22
Publication date: 2020-07-21
Anticipated expiration: 2029-11-22

Abstract

An extended target ball holder, the target ball holder comprising: the top cover is embedded with a first magnet, and the target ball is attracted and fixed on the top cover surface by magnetic force; the top cover is sleeved at one end of the extension rod; the base is sleeved at the other end of the extension rod. And a second magnet is embedded in the base.

Description

Extended target ball fixer

Technical Field

The utility model belongs to the technical field of the metallurgical measurement, in particular to extension formula target ball fixer.

Background

Due to the limitation of the steel rolling process of a steel rolling mill, the working environment of the steel rolling mill is poor, and negative factors including high temperature, dust, oil stain, noise, radiation and the like have negative effects on field rolling mill equipment and workers. High temperature and high humidity generated at any moment in the steel rolling process inevitably cause corrosion, abrasion and impact on a rolling mill frame, particularly a window body, an upper roller and a lower roller, so that the spatial positions of all parts of the rolling mill are changed. The rolling precision of the rolling mill is closely related to the spatial positions of various components of the rolling mill. Once the spatial positions of the window of the rolling mill and the internal rollers are displaced relatively, the specification of the finally rolled and formed steel cannot meet the specified requirement.

The method of measuring the position or reference point by using the laser tracker is a method which is already commonly used in the metallurgical industry, and has been described in many documents on the measuring system and principle thereof, and the target ball adopted by the laser tracker is also available as a product sold in the market, for example, L eica geosystems provides the target ball which is a metal ball provided with a triangular reflecting mirror and can ensure a constant offset when measuring the surface.

Because the working condition environment of the rolling mill is severe, it is impossible to ensure that all measured points or measured planes are easy to fix target balls. In actual detection, the target ball can only be fixed in a mode of manually holding the target ball, the mode is greatly influenced by human factors, the stability is poor, the efficiency is low, the rolling mill is a complex and high large machine, and the climbing device is very unsafe for operators needing to climb.

For example, the height of a rolling mill can be up to 10 meters or even more. In the presence of such a huge object, in the actual laser detection, it is often encountered that some positions needing detection cannot be reached by light. For example, the detection cannot be performed because the bearing seat at the transmission side position of the lower work roll is blocked by the balance cylinder, the roll bending block, or the like, and the laser beam of the laser tracker cannot reach the bearing seat.

In the conventional measurement method, there are three ways to solve the above problems:

in the first mode, field workers cooperate to remove interference parts such as a balance bar and a roller bending block which shield the bearing pedestal, so that light can reach the bearing pedestal to complete measurement. The drawbacks of this approach are also apparent. The cooperation of field workers is needed, and the scaffold is arranged, so that a large amount of labor and time are consumed.

The second way is to move the laser tracker position so that it can measure the bearing support. However, once the machine is moved, the originally set spatial coordinates must be re-fitted, so that the detection steps that can be completed in one step must be completed in multiple steps, and the detection accuracy is correspondingly reduced.

A third way is to use a T-probe detection tool instead of a target ball to detect planes where light cannot reach. However, the price of one T-probe is not so high, and millions of RMB are frequently moved, so that the detection cost is increased.

Therefore, the traditional detection method has the defects in the aspects of detection precision, detection time progress and cost performance.

SUMMERY OF THE UTILITY MODEL

The embodiment of the utility model provides an extension formula target ball fixer for solve among the prior art some hidden, the unable difficult problem that detects of position that arrives of light of rolling mill.

The embodiment of the utility model provides an one of, an extension formula target ball fixer for rolling mill parameter measurement, this target ball fixer includes top cap, extension rod and base. A second magnet is embedded in the top cover, and the target ball is attracted and fixed on the surface of the top cover by magnetic force; the top cover is sleeved at one end of the extension rod; the base is sleeved at the other end of the extension rod.

The utility model discloses to the difficult problem that meets in actual rolling mill parameter detection, provide an extension formula target ball fixer, this target ball fixer is the appurtenance that adopts laser tracker to carry out laser detection, has thoroughly solved the problem that is difficult to detect the rolling mill and conceals the position that often meets among the present laser detection, has really realized three big characteristics of accuracy, high efficiency, the safety that laser detected.

Drawings

The above and other objects, features and advantages of exemplary embodiments of the present invention will become readily apparent from the following detailed description read in conjunction with the accompanying drawings. Several embodiments of the present invention are illustrated by way of example, and not by way of limitation, in the figures of the accompanying drawings and in which:

fig. 1 is a schematic structural view of a target ball holder according to an embodiment of the present invention.

Fig. 2 is an exploded view of a target ball holder according to an embodiment of the present invention.

Fig. 3 is a schematic diagram of a target ball holder according to an embodiment of the present invention.

Fig. 4 is a partially enlarged view of V in fig. 3.

1-top cover, 2-extension rod, 3-base, 4-first magnet, 5-second magnet, 6-target ball fixer, 7-rolling mill.

Detailed Description

In accordance with one or more embodiments, as shown in fig. 1 and 2, an extended target ball holder for mill parameter measurement includes a top cover, an extension rod, and a base. The top cover is embedded with a second magnet, and the target ball is attracted and fixed on the top cover surface by magnetic force. The top cover surface is a spherical curved surface, and the radius of the spherical curved surface is consistent with the radius of the target sphere. The radius of this spherical surface can be chosen to be 19.05mm, depending on the size of the target sphere at hand. The surface roughness of the spherical curved surface can be Ra0.2-1.2 mu m, and the same roundness of any circumference of the curved surface is less than or equal to 0.01 mm. After the target ball is placed on the target ball seat, the distance between the lowest point of the target ball surface and the magnet is recommended to be controlled to be 0.6-1.55 mm, so that the moderate magnetic force is ensured.

The top cover is sleeved at one end of the extension rod; the base is sleeved at the other end of the extension rod. A first magnet is embedded in the base. The magnet can help the base to be attached to the surface to be measured of the rolling mill.

Further, according to one or more embodiments, the extended target ball holder is composed of three parts, i.e., a base, an extension rod, and a top cover as a target ball seat. The base is made of aluminum alloy and is fixed on the extension rod made of carbon fiber through two inner hexagonal screws. The other end of the extension rod is fixed with a top cover which is made of stainless steel and is used as a target ball seat through AB glue. The fixing means may ensure the structural stability of the measuring device. And stability is a key factor for ensuring the measurement accuracy.

As shown in fig. 3 and 4, in the actual measurement process, the detection personnel manually hold the extension type target ball fixer, one end of the base of the extension type target ball fixer is firmly attached to the plane to be detected, which cannot be reached by light, and meanwhile, the extension rod is held by the other hand, so that the target ball attracted by the other end of the extension rod through magnetic force is ensured to receive the laser beam emitted by the laser tracker. By the method, the stability of the detection process is ensured, and the target ball cannot deviate unnecessarily, so that the detection precision is ensured. Compared with the traditional detection mode, the time is greatly saved. On average, it takes only 5 minutes to complete the plane detection. The average layer height of a certain type of rolling mill is about 20 to 30 meters, and some surfaces of an arc-shaped section on the rolling mill need to be detected sometimes. The traditional detection mode needs detection personnel to carry out high-altitude operation for detection. The extension rod is used at present, so that the position on the arc section, which cannot be reached by light, can be conveniently detected. Under the condition of ensuring the detection precision, the personal safety of detection personnel is also ensured.

To sum up, the extension type target ball fixer can effectively solve the detection problem that light cannot reach certain planes in detection operation, ensures the detection precision and efficiency, avoids the process of building an auxiliary detection platform on site, avoids overhead operation at the same time, and practically ensures the safety of detection personnel.

It is worth noting that while the foregoing has described the spirit and principles of the present invention with reference to several specific embodiments, it is to be understood that the present invention is not limited to the disclosed embodiments, nor is the division of aspects, which is for convenience only as the features in these aspects cannot be combined. The invention is intended to cover various modifications and equivalent arrangements included within the spirit and scope of the appended claims.

Claims

1. An extended target ball holder for rolling mill parameter measurement, the target ball holder comprising:

the top cover is internally embedded with a second magnet, the target ball is attracted and fixed on a top cover surface by magnetic force, the top cover surface is a spherical curved surface, and the radius of the spherical curved surface is consistent with the radius of the target ball;

the top cover is sleeved at one end of the extension rod;

the base is sleeved at the other end of the extension rod.

2. The target ball holder of claim 1 wherein a first magnet is embedded in the base.