CN213409823U

CN213409823U - Tilting mechanism of sizing mill frame

Info

Publication number: CN213409823U
Application number: CN202021257117.5U
Authority: CN
Inventors: 王锐
Original assignee: Jingjiang Special Steel Co Ltd
Current assignee: Jingjiang Special Steel Co Ltd
Priority date: 2020-07-02
Filing date: 2020-07-02
Publication date: 2021-06-11
Anticipated expiration: 2030-07-02

Abstract

The utility model relates to a tilting mechanism of sizing mill frame, the on-line screen storage device comprises a rack, set up the L type upset arm of two relay upsets on the rack, two the interval sets up around the L type upset arm level, two do not include two holding surfaces of mutually perpendicular are equallyd divide to L type upset arm, and the frame accomplishes first 90 upsets between two holding surfaces of preceding L type upset arm when preceding L type upset arm is turned over after, accomplishes the upset transmission of frame between two L type upset arms when the last holding surface of preceding L type upset arm and the preceding holding surface coplane of a back L type upset arm, and the frame accomplishes second 90 upsets between two holding surfaces of a back L type upset arm when a back L type upset arm is turned over after. Through two L type upset arms that set up in front and back, realize successively twice 90 upset transmissions to the frame, finally accomplish the 180 upsets of frame, advantage safe high-efficient, simple swift.

Description

Tilting mechanism of sizing mill frame

Technical Field

The utility model relates to a tilting mechanism realizes the upset of sizing mill work in-process frame.

Background

In the production process of seamless steel pipes, steel pipe sizing or tension reducing is an important process, and a sizing mill frame or a reducing mill frame is used. Since sizing or stretch reducing mills (stretch reducing mills) are generally associated with continuous rolling processes, a plurality of stands are required to operate simultaneously. The diameter reduction of the steel pipe adopts a non-closed hole pattern, and roll gaps of front and rear frames need to be arranged in a staggered manner. In the use process of the frame, the hole pattern position of the roller is inverted up and down according to different requirements when the roller is turned, so that before the frame is used on a line, whether the frame needs to be turned over for 180 degrees or not is determined according to the working position of the frame.

At present, the frame overturning adopts the following three modes:

the lifting appliance is lifted by the overhead travelling crane, two pin shafts on the lifting appliance are inserted into the columnar holes of the rack in a manual mode, then the rack is inclined to pull by the overhead travelling crane, the rack is laid down, the lifting appliance is toppled to the other side of the rack around the pin shafts, the manual locking is achieved, the overhead travelling crane is lifted by the overhead travelling crane, the rack is erected step by step, and the rack is turned over.

The disadvantages are as follows: A. the crown block is occupied for a long time; B. the bolt shaft and the locking rack need to be manually operated, so that the manual labor intensity is high; C. when the overhead traveling crane is laid down and hoisted the frame, belong to askew oblique hanging of drawing completely, increased the operation danger, the overhead traveling crane strikes greatly, and when hoist weight is great, manual operation bolt axle and locking difficulty, therefore this mode can only be used to the frame that the list weight is lighter.

And secondly, directly using a crown block, pulling the rack to be inclined through a steel wire rope hung on the upper part of the rack, slowly falling the rack on the skid through the operation of the crown block, hanging the steel wire rope on the other side by an operator after the rack is flatly placed, and slowly hoisting the crown block to complete the turnover of the rack.

The disadvantages are as follows: A. the inclined pulling and hanging has serious potential safety hazard; B. the impact force to the crown block is large; C. although the skid is arranged, the impact force is large, and the roller edge protruding out of the frame shell is easy to knock down, so that the roller waste is caused.

Thirdly, the special frame turnover machine is used for turning over the frame, and the current basic form is as follows: a welded basket-type cage with an upper cover and a lower cover fastened through bolts extends out of two shafts from left to right at the vertical symmetrical positions of the cage and is fixed on a bearing seat on a rack, one end of the cage is connected with a speed reduction motor, the cage rotates under the driving of the motor, and the rack rotates together in the cage to complete the turnover.

The disadvantages are as follows: before and after the frame is turned over, the weight of the frame is respectively pressed on the upper cover and the lower cover, so that the cover of the cage must be reliably installed, a large number of bolts need to be fastened, and the cage can be lifted out of the frame after the cover needs to be detached when the frame is taken out; the operation difficulty is high, and the turnover efficiency is low.

SUMMERY OF THE UTILITY MODEL

The utility model aims at designing a tilting mechanism for accomplish 180 upsets of sizing mill frame fast, alleviate the operation degree of difficulty of frame upset.

The utility model provides a technical scheme that above-mentioned problem adopted does: the utility model provides a tilting mechanism of sizing mill frame which characterized in that: the multifunctional turnover rack comprises a rack, set up the L type upset arm of two relay upsets on the rack, two interval setting around the L type upset arm level, two the L type upset arm is equallyd divide and is do not including two support surfaces of mutually perpendicular, and the frame accomplishes the first 90 upsets between two support surfaces of a preceding L type upset arm when preceding L type upset arm is turned over after, accomplishes the upset transmission of frame between two L type upset arms when the preceding support surface of the back support surface of a preceding L type upset arm and a back L type upset arm coplane, and the frame accomplishes the 90 upset of second time between two support surfaces of a back L type upset arm when a back L type upset arm is turned over after.

Preferably, the rear supporting surface of the front L-shaped overturning arm and the front supporting surface of the rear L-shaped overturning arm are of fence structures, and are mutually crossed when being coplanar, so that the gravity center of the rack is simultaneously dropped on the two crossed supporting surfaces in the transferring process.

Preferably, a front supporting surface of the front L-shaped overturning arm and a rear supporting surface of the rear L-shaped overturning arm are of flat plate structures, so that the stand can be conveniently erected and stably supported.

Preferably, two supporting surfaces of the L-shaped turnover arm are fixedly arranged (welded and fixed) on the rotating shaft by 90 degrees, a bearing seat is arranged on the rack, the rotating shaft is correspondingly supported on the bearing seat, and the rotating shaft is connected with an oil cylinder and drives the rotating shaft to deflect.

Preferably, the rack is provided with a cushion block for supporting the supporting surface and limiting the overturning action of the supporting surface, so that the reliability and stability of the overturning action are ensured, and related equipment is protected.

Compared with the prior art, the utility model has the advantages of: two times of 90-degree turnover transmission is realized for the rack through the two L-shaped turnover arms arranged in front and at the back, and the 180-degree turnover of the rack is finally completed. The turnover mechanism has the advantages of light structure, convenience in manufacturing and maintenance, and safety, high efficiency, simplicity and quickness in turnover action of the rack.

Drawings

Fig. 1 is a schematic view of the operation of the turnover mechanism in the embodiment of the present invention;

fig. 2 is a front view of the turnover mechanism in the embodiment of the present invention;

fig. 3 is a top view of the turnover mechanism in the embodiment of the present invention;

fig. 4 is a side view of the turnover mechanism in the embodiment of the present invention.

Detailed Description

The invention will be described in further detail with reference to the following examples, which are given by way of illustration and are intended to be illustrative of the invention and should not be construed as limiting the invention.

This embodiment relates to a tilting mechanism of sizing mill frame, including rack 1, rack 1 is the horizontal plane, and the interval sets up two L type upset arms around on the rack 1: 1# L-shaped turnover arm 2, 2# L-shaped turnover arm 4, and the two L-shaped turnover arms are turned over in a relay mode. The two L-shaped overturning arms respectively comprise two supporting surfaces which are perpendicular to each other, when the 1# L-shaped overturning arm is overturned backwards, the rack 3 completes first 90-degree overturning between the two supporting surfaces of the 1# L-shaped overturning arm, when the rear supporting surface of the 1# L-shaped overturning arm is coplanar with the front supporting surface of the 2# L-shaped overturning arm, overturning transmission of the rack 3 between the two L-shaped overturning arms is completed, when the 2# L-shaped overturning arm is overturned backwards, the rack 3 completes second 90-degree overturning between the two supporting surfaces of the 2# L-shaped overturning arm, and 180-degree overturning of the rack 3 is completed through twice overturning. The rack 1 is provided with a cushion block 7 which supports a support surface turned to be horizontal.

A back supporting surface of the 1# L-shaped overturning arm and a front supporting surface of the 2# L-shaped overturning arm are of fence structures and are mutually crossed when being coplanar, and the gravity center of the rack 3 falls on the supporting surfaces of the two fence structures simultaneously in the overturning and transferring process, so that the rack 3 is convenient to transfer. The front supporting surface of the 1# L-shaped overturning arm and the rear supporting surface of the 2# L-shaped overturning arm are of flat plate structures, and the vertical type rack 3 is stably supported.

Two supporting surfaces of the 1# L-shaped turnover arm are welded and fixed on a rotating shaft at an angle of 90 degrees, a 1# bearing seat 5 is arranged on the rack 1 and used for supporting the rotating shaft, and the rotating shaft is connected with an oil cylinder. Similarly, two supporting surfaces of the 2# L-shaped turnover arm are welded and fixed on a rotating shaft at an angle of 90 degrees, a 2# bearing seat 6 is arranged on the rack 1 and used for supporting the rotating shaft, and the rotating shaft is connected with an oil cylinder.

The utility model discloses tilting mechanism's theory of operation as follows:

and as shown in the figure 1, when the turnover machine is in the state as shown in the figure, the rack is lifted in place according to the position shown in the figure by using a crown block, and the lifting steel wire rope is manually taken down.

The tilter is started, the working button is pressed, and the 1# L-shaped tilting arm drives the rack to tilt 90 degrees towards the middle direction.

When the 1# L-shaped turnover arm completely levels the rack, the rack is in a laid-down state, the 1# turnover arm stops working, the 2# L-shaped turnover arm starts working, and the 2# L-shaped turnover arm turns over from the middle to the back, drives the rack to raise from a horizontal position to a vertical position, and simultaneously turns over for 180 degrees.

The operator hangs the frame on the hoisting steel wire rope and uses the crown block to hoist the frame out of the turnover mechanism.

The next time of use, starting with the 2# L-shaped invert arm and finishing with the 1# L-shaped invert arm.

The basic idea of the invention is to use the joint force of two L-shaped arms to work to complete 180-degree turnover of a frame, and use an electric detection element to control a hydraulic system, so that the whole process is completely free from manual intervention, and the labor intensity of operators is saved.

The power of the invention is a hydraulic oil cylinder, the reliable self-locking of a hydraulic system is utilized, the stability and the safety of the frame in the overturning process are ensured, the overturning equipment is also ensured not to be subjected to large impact, and the cushion block arranged on the place where the overturning mechanism is possibly contacted with the frame is additionally arranged, so that the possible damage to the frame and the roller can be completely avoided.

Although the preferred embodiments of the present invention have been described in detail hereinabove, it should be clearly understood that modifications and variations of the present invention are possible to those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. The utility model provides a tilting mechanism of sizing mill frame which characterized in that: the multifunctional turnover rack comprises a rack, set up the L type upset arm of two relay upsets on the rack, two interval setting around the L type upset arm level, two the L type upset arm is equallyd divide and is do not including two support surfaces of mutually perpendicular, and the frame accomplishes the first 90 upsets between two support surfaces of a preceding L type upset arm when preceding L type upset arm is turned over after, accomplishes the upset transmission of frame between two L type upset arms when the preceding support surface of the back support surface of a preceding L type upset arm and a back L type upset arm coplane, and the frame accomplishes the 90 upset of second time between two support surfaces of a back L type upset arm when a back L type upset arm is turned over after.

2. The tilting mechanism of a sizing mill frame according to claim 1, characterized in that: the back supporting surface of the front L-shaped turnover arm and the front supporting surface of the back L-shaped turnover arm are in fence structures and are mutually crossed when being coplanar.

3. The tilting mechanism of a sizing mill frame according to claim 1, characterized in that: the front supporting surface of the front L-shaped overturning arm and the rear supporting surface of the rear L-shaped overturning arm are of flat plate structures.

4. The tilting mechanism of a sizing mill frame according to claim 1, characterized in that: two supporting surfaces of the L-shaped turnover arm are mutually fixed on the rotating shaft by 90 degrees, a bearing seat is arranged on the rack, the rotating shaft is correspondingly supported on the bearing seat, and the rotating shaft is connected with the oil cylinder.

5. The tilting mechanism of a sizing mill frame according to claim 1, characterized in that: the rack is provided with a cushion block for supporting the supporting surface.