CN210638493U

CN210638493U - Tilting mechanism of steelmaking electric arc furnace

Info

Publication number: CN210638493U
Application number: CN201921711508.7U
Authority: CN
Inventors: 杨舒云; 杨静莉
Original assignee: Individual
Current assignee: Individual
Priority date: 2019-10-14
Filing date: 2019-10-14
Publication date: 2020-05-29
Anticipated expiration: 2029-10-14

Abstract

A tilting mechanism of a steelmaking electric arc furnace belongs to the technical field of steelmaking equipment improvement. The utility model aims at replacing the tilting mechanism of the steelmaking electric arc furnace supporting main shaft without dismantling the furnace tilting platform and the furnace body assembly above the platform, the furnace cover lifting rotating mechanism, the electrode lifting mechanism and other equipment with hundreds of tons. The utility model discloses install the arc frame below the platform of fascinating, fascinating the stove hydro-cylinder of fascinating of piston is connected to platform extension end of fascinating, and the riding wheel contact of arc frame bottom and riding wheel assembly, riding wheel assembly install respectively on bearing diagonal frame and horizontal stand, and the bearing diagonal frame is arranged in on the base. The utility model discloses an arc frame of new design reduces the deformation of the platform of fascinating the stove, has prolonged the life of the platform of fascinating the stove, also makes electric stove installation basis reduce after the required precision improves as long as several hours of stopping production can pull down old riding wheel support main shaft, adorns new riding wheel main shaft.

Description

Tilting mechanism of steelmaking electric arc furnace

Technical Field

The utility model belongs to the technical field of steelmaking equipment improvement.

Background

Steelmaking is the most important thing in the industry, the demand for steel cannot be kept away from the construction of all trades, the global steel yield is huge, and the steel yield is increased every year. The electric arc furnace tilting mechanism plays a role in skimming or tapping during smelting of the steel-making electric arc furnace. A weighing device is arranged in a riding wheel supporting main shaft of an electric arc furnace tilting mechanism, and due to the fact that the weighing device is short in service life, the riding wheel supporting main shaft is required to be disassembled. At present, the riding wheel supporting main shaft can be dismounted only after devices with weight of hundreds of tons, such as a furnace tilting platform, a furnace body assembly above the platform, a furnace cover lifting rotating mechanism, an electrode lifting mechanism and the like, are firstly dismounted, then a new riding wheel supporting main shaft is mounted, the furnace body assembly, the furnace cover lifting rotating mechanism and the electrode lifting mechanism above the furnace tilting platform and the platform are mounted again, and the production is stopped for about one week. After the improvement, the old riding wheel supporting main shaft can be detached as long as the production is stopped for several hours, and a new riding wheel main shaft is assembled.

Disclosure of Invention

The utility model aims at replacing the tilting mechanism of the steelmaking electric arc furnace supporting main shaft without dismantling the furnace tilting platform and the furnace body assembly above the platform, the furnace cover lifting rotating mechanism, the electrode lifting mechanism and other equipment with hundreds of tons.

The arc-shaped frame is arranged below the tilting platform, the extended end of the tilting platform is connected with the piston type tilting oil cylinder, the bottom end of the arc-shaped frame is contacted with the riding wheel of the riding wheel assembly, the riding wheel assembly is respectively arranged on the inclined bracket and the transverse bracket, and the inclined bracket is arranged on the base; the structure of the riding wheel assembly is as follows: a left support plate and a right support plate are fixedly arranged on the inclined support or the transverse support, a riding wheel support main shaft is conical and penetrates through the left support plate and the right support plate and is fastened through a main shaft locking nut, a main shaft sleeve with the conical inner part is sleeved outside the conical middle part of the riding wheel support main shaft between the left support plate and the right support plate, the main shaft sleeve is arranged inside a trailer frame, a riding wheel is arranged at the upper end of the trailer frame through a riding wheel shaft, a movable trailer frame fixing block is arranged at the lower end of the trailer frame between the left support plate and the right support plate, a locking frame groove matched with the bottom end of the trailer frame is formed in the trailer frame fixing block, an avoiding groove is formed in the bottom of the left support plate and/or the right support plate, and an inclined iron pad with the upper surface in a slope shape is inserted into; the main shaft dismounting support is arranged on the inclined support or the transverse support, the main shaft dismounting support is arranged on the outer side of the left support plate, a spiral ejector rod is arranged on the main shaft dismounting support through threads, the spiral ejector rod corresponds to the conical supporting wheel supporting main shaft, and an ejector rod crank is arranged on the spiral ejector rod.

The utility model discloses install main shaft dismouting rings on conical riding wheel support main shaft right side.

The utility model discloses all open the groove of dodging bottom left support plate and right branch fagging to the main shaft is dismantled the support bottom and is also opened the groove of dodging, and left wedge passes the main shaft simultaneously and dismantles the support bottom and also open the groove of dodging that has the groove of dodging and left support plate bottom.

The utility model discloses an improve on current tilting mechanism basis, removed the horizontal support of platform, and the arc frame through new design replaces, just so adopts three arc frame and the utility model discloses three arc frame riding wheels of group who redesigns support the assembly. The utility model discloses not only can reduce the deformation of the platform of fascinating the stove, prolong the life of the platform of fascinating the stove, make steelmaking electric arc furnace operation simple more reliable moreover. The utility model discloses to have each riding wheel of group now to support and become two riding wheels by a riding wheel, not only can make the riding wheel diameter diminish, also make electric stove installation basis reduce after the required precision improves as long as several hours of stopping production can pull down old riding wheel support main shaft, adorn new riding wheel main shaft.

Drawings

FIG. 1 is a schematic structural view of the present invention;

figure 2 is a left side view of figure 1 of the present invention;

FIG. 3 is an enlarged view of a portion A of FIG. 1 according to the present invention;

fig. 4 is a sectional view taken along line B-B of fig. 3 according to the present invention.

Detailed Description

The utility model discloses install arc frame 2 below the platform of fascinating 1, fascinating 1 extension end of platform of fascinating connects piston and fascinates hydro-cylinder 4, 2 bottoms of arc frame and riding wheel assembly 3's riding wheel 11 contacts, and riding wheel assembly 3 is the utility model discloses the modified part to, arc frame 2 adopts threely, and same correspondence will adopt three groups the utility model discloses a riding wheel assembly 3. Riding wheel assembly 3 is installed respectively on oblique support 7 and lateral frame 6, and the oblique support 7 among the three riding wheel assemblies of group 3 adopts two, and lateral frame 6 adopts one to two oblique support 7 components are similar to a bowl shape, and are corresponding with the arc of 2 bottoms of arc frame, and this is the utility model discloses first point after the improvement: the improved tilting furnace mechanism has the advantages that the improvement is carried out on the basis of the existing tilting furnace mechanism, the horizontal support of a platform is removed, the existing two arc-shaped frames are added into three arc-shaped frames, and therefore a group of supporting roller assemblies 3 for supporting the arc-shaped frames are also added for supporting and assembling. The inclined bracket 7 is arranged on the base 5. The structure of the riding wheel assembly 3 is as follows: the structure of the riding wheel assembly 3 is the second improvement of the utility model. The left support plate 12 and the right support plate 9 are fixedly mounted on the inclined support 7 or the transverse support 6, the supporting roller supporting main shaft 14 is conical and penetrates through the left support plate 12 and the right support plate 9, namely, the supporting roller supporting main shaft 14 is gradually reduced from right to left, so that the supporting roller supporting main shaft 14 can be conveniently inserted from the right side, after the supporting roller supporting main shaft is completely inserted, the supporting roller supporting main shaft is fastened through a main shaft locking nut 24, a conical main shaft sleeve 13 is sleeved on a conical part 18 in the middle of the supporting roller supporting main shaft 14 between the left support plate 12 and the right support plate 9, the main shaft sleeve 13 is a transition piece, the supporting roller supporting main shaft 14 and the towing roller frame 8 can be conveniently mounted, and the main shaft sleeve 13 is mounted inside the towing. The riding wheel 11 is installed on the upper end of the towing wheel frame 8 through the riding wheel shaft 10, the lower end of the towing wheel frame 8 between the left support plate 12 and the right support plate 9 is provided with a movable towing wheel frame fixing block 16, the upper surface of the towing wheel frame fixing block 16 is provided with a locking frame groove 19 matched with the bottom end of the towing wheel frame 8, the bottom of the left support plate 12 and/or the right support plate 9 is provided with an avoiding groove 23, the inclined pad iron 17 with the slope-shaped upper surface is inserted into the avoiding groove 23 and is arranged at the bottom of the towing wheel frame fixing block 16, the towing wheel frame fixing block 16 is a movable part capable of moving up and down, when the inclined pad iron 17 is gradually inserted, the towing wheel frame fixing block 16 is gradually lifted up until the bottom end of the towing wheel frame 8 is completely arranged in the locking frame groove 19, the rotation of the inclined pad iron is limited, and the towing wheel frame 8 is simultaneously supported. The main shaft dismounting support 22 is installed on the inclined support 7 or the transverse support 6, the main shaft dismounting support 22 is arranged on the outer side of the left support plate 12, the spiral ejector rod 21 is installed on the main shaft dismounting support 22 through threads, the spiral ejector rod 21 corresponds to the conical riding wheel support main shaft 14, the ejector rod crank 20 is installed on the spiral ejector rod 21, the ejector rod crank 20, the spiral ejector rod 21 and the main shaft dismounting support 22 form a mechanism convenient for the riding wheel support main shaft 14 to be dismounted, and the riding wheel support main shaft 14 is used for a long time and is inconvenient to dismount in possible installation, so that after the spiral ejector rod 21 is rotated, the main shaft dismounting support gradually contacts with the small end of the riding wheel support main shaft 14 and is gradually ejected.

The utility model discloses install main shaft dismouting rings 15 on conical riding wheel support main shaft 14 right side, main shaft dismouting rings 15 mainly are the rings that make things convenient for when dismantling and installing riding wheel support main shaft 14, and the right side has a convenient control.

The utility model discloses it dodges groove 23 all to open in left branch fagging 12 and 9 bottoms of right branch fagging to main shaft dismantles support 22 bottom and also opens and has dodge the groove, and left wedge 17 passes main shaft dismantles support 22 bottom simultaneously and also opens the groove of dodging that has dodge groove and left branch fagging 12 bottoms. The part is that a part for lifting the tug frame fixing block 16 upwards is added on the left side, so that the tug frame fixing block 16 cannot be inclined after the inclined pad irons 17 on the left side and the right side are synchronously inserted.

The working process is as follows: when the electric arc furnace is used for smelting, the tilting mechanism platform is in a horizontal position, when the electric arc furnace is used for carrying out steel tapping operation, the piston rod of the piston type tilting oil cylinder extends to jack the platform under the action of high-pressure oil, so that the arc frame rotates on the supporting wheel by taking the circle center of the arc frame as an axis and the molten steel flows out of the steel tapping groove of the furnace body. When the slag is removed, the piston rod of the furnace tilting oil cylinder 4 retracts, and the electric arc furnace rotates in the opposite direction to enable the steel slag to flow out of the furnace door. No matter tapping or slagging-off electric arc furnace platform is in an inclined state, the platform horizontal support of the existing electric arc furnace can only be supported during horizontal smelting, and under the condition of tapping or slagging-off, the platform horizontal support firstly passes through a supporting oil cylinder, and then the tapping and slagging operation can be carried out after the platform horizontal support is removed. The result of doing so is not only operating procedure loaded down with trivial details, prolongs the smelting time, and the platform is often in the state of not having the support moreover, causes the platform to warp, has shortened the life of platform. The utility model discloses newly increase an arc frame and a set of riding wheel support assembly, can realize no matter the electric arc furnace is in horizontal position or under the tilt state of tapping and slagging-off operation, the platform is in all the time by the supported state. Because the retainer ring is arranged between the supporting wheel frame and the supporting wheel seat, the supporting wheel frame cannot move in the horizontal direction, and the supporting wheel support main shaft cannot move in the horizontal direction and cannot rotate under the action of the main shaft locking nut.

The working process of disassembling and assembling the supporting wheel supporting spindle is briefly described as follows: when the weighing device arranged in the riding wheel support main shaft is damaged, the riding wheel support main shaft is arranged at the original working position after a new sensor is arranged again after the shaft is detached. The utility model discloses the riding wheel supports the main shaft and at first supports the main shaft by cylindrical riding wheel and change conical riding wheel support main shaft into in the design. When the supporting main shaft of the supporting wheel needs to be disassembled, the oblique iron pads on the two sides of the supporting wheel seat are knocked by a hammer to jack up the fixing block of the supporting wheel frame, so that the supporting wheel frame is fixed. The main shaft locking nut is unscrewed and removed, the ejector rod crank is rotated, the spiral ejector rod moves forwards on the main shaft removing support towards the direction of the supporting wheel supporting main shaft and pushes the supporting wheel supporting main shaft, the supporting wheel supporting main shaft moves backwards to be separated from the main shaft sleeve, and the rope is connected with the main shaft removing and mounting hanging ring together, so that the supporting and transporting main shaft can be removed. When the riding wheel support main shaft is remounted, the shaft is firstly inserted into the mounting hole, and the riding wheel support main shaft can be completely mounted through the reverse procedure.

Claims

1. The utility model provides a steelmaking electric arc furnace tilting mechanism, the installation arc frame (2) below tilting platform (1), tilting platform (1) extension end connects piston tilting cylinder (4), its characterized in that: the bottom end of the arc-shaped frame (2) is contacted with a riding wheel (11) of a riding wheel assembly (3), the riding wheel assembly (3) is respectively arranged on an inclined bracket (7) and a transverse bracket (6), and the inclined bracket (7) is arranged on the base (5); the structure of the riding wheel assembly (3) is as follows: a left support plate (12) and a right support plate (9) are fixedly arranged on the inclined support (7) or the transverse support (6), a riding wheel support spindle (14) is conical and penetrates through the left support plate (12) and the right support plate (9) and is fastened through a spindle locking nut (24), a spindle sleeve (13) with the inner part being conical is sleeved outside a conical part (18) in the middle of the riding wheel support spindle (14) between the left support plate (12) and the right support plate (9), the spindle sleeve (13) is arranged inside the towing wheel frame (8), a riding wheel (11) is arranged at the upper end of the towing wheel frame (8) through a riding wheel shaft (10), a movable towing wheel frame fixing block (16) is arranged at the lower end of the towing wheel frame (8) between the left support plate (12) and the right support plate (9), a locking frame groove (19) matched with the bottom end of the towing wheel frame (8) is formed in the upper surface of the towing wheel frame fixing block (16), and an avoiding groove (23) is formed in the bottoms of the left, an inclined sizing block (17) with a slope-shaped upper surface is inserted into the avoidance groove (23) and is arranged at the bottom of the fixed block (16) of the towing wheel frame; a main shaft dismounting support (22) is mounted on the inclined support (7) or the transverse support (6), the main shaft dismounting support (22) is arranged on the outer side of the left support plate (12), a spiral ejector rod (21) is mounted on the main shaft dismounting support (22) through threads, the spiral ejector rod (21) corresponds to the conical riding wheel support main shaft (14), and an ejector rod crank (20) is mounted on the spiral ejector rod (21).

2. The steelmaking electric arc furnace tilting mechanism of claim 1, wherein: a main shaft dismounting hanging ring (15) is arranged on the right side of the conical riding wheel supporting main shaft (14).

3. The steelmaking electric arc furnace tilting mechanism of claim 1, wherein: dodging grooves (23) are formed in the bottoms of the left supporting plate (12) and the right supporting plate (9), dodging grooves are also formed in the bottom of the spindle dismounting support (22), and the left oblique sizing block (17) penetrates through the bottom of the spindle dismounting support (22) to form dodging grooves which are also formed in the bottoms of the dodging grooves and the left supporting plate (12).