CN117463983A - Installation method of ladle turret equipment of continuous casting machine - Google Patents

Abstract

The invention relates to a method for installing a ladle turret of a continuous casting machine; the method comprises the following steps of 1, mounting a base of a bale rotary table; step 2, assembling the ground of the large ladle turret body; step 3, integrally hoisting the large ladle turret body into position; in the step 2, in the assembly process of the large ladle turret body, a lower conjoined tool is arranged between the large ladle turret body and the lower position of a fork arm, an upper conjoined tool is arranged between the high position of the fork arm and a door-shaped frame, and a lifting lug tool is arranged at the outer side and the far end of a saddle; and 3, in the integral hoisting and positioning process of the large ladle turret body, the whole hoisting and positioning step of the large ladle turret body is carried out through the connection of the double cranes and the lifting lug tools at the far ends of the saddle saddles at the two sides. By adopting the hoisting method, the safety of the installation process of the continuous casting rotary equipment can be greatly improved, the installation efficiency of continuous casting rotary is improved, the utilization rate of the hoisting equipment is improved, and the labor intensity of operators is reduced.

Description

Installation method of ladle turret equipment of continuous casting machine

Technical Field

The invention relates to the technical field of installation of smelting equipment in a steel mill, in particular to an installation method of a ladle turret equipment of a continuous casting machine.

Background

In metallurgical engineering projects, a ladle turret apparatus is often employed by a continuous casting machine to lift and tilt a ladle of molten steel and to continuously cast the ladle in the continuous casting machine, thereby ensuring the continuity of the production process.

The installation of the conventional continuous casting machine equipment is often carried out after the factory building structure is closed, and the installation difficulty is high because the installation position of the large ladle turret equipment body is high, the volume is large, and the required precision is high.

When the traditional bale turntable equipment is installed, the upper part revolving frame, the door-shaped frame, the lifting oil cylinder, the fork arm, the connecting rod, the platform, the railing and the like are respectively installed after the revolving base and the driving device are installed. Therefore, when the space is narrow and the lower part of the obstacle is eccentrically installed, the parts need to be moved into the crane for multiple times or the double machines need to be moved into the crane, the distance between the working surfaces is almost consistent with the outer edge of the rotary equipment, and the lifting position is at the high altitude of tens or even tens of meters, so that the unavoidable collision and structural collision occur, and the collision possibly affects the precision and leads to the need of secondary adjustment work.

In addition, the large-ladle turret is large in size, poor in stability during single-hook hoisting, and is generally installed by adopting a double-crane hoisting method, so that the two travelling crane operation requirements are synchronous, the requirements on operators are high, the number of times of hoisting and installing the parts is more, and the parts are more dangerous especially in a factory building with a narrow space.

Disclosure of Invention

The invention aims to overcome the defects, and in order to improve the working efficiency and reduce the construction safety risk, the invention provides a method for installing the ladle turret of the continuous casting machine, which not only improves the working efficiency of equipment installation, but also reduces the labor intensity and the safety risk of operators aiming at the defects of instability in hoisting, low efficiency, high operation intensity and the like of the ladle turret in the installation process.

In order to achieve the above object, the present invention is achieved by:

a method for installing a ladle turret device of a continuous casting machine comprises

Step 1, mounting a base of a bale rotary table;

step 2, assembling the ground of the large ladle turret body;

step 3, integrally hoisting the large ladle turret body into position;

the large-package rotary table comprises a large-package rotary body (1), a fork-type arm supporting ball head (2), a fork-type arm (3), a weighing block (4), a saddle (5), a balance connecting rod (6), a gate-type frame (7), a lifting cylinder (8) and a rotary table base (9) with a driving device, and also comprises a lower part conjoined tool (10), an upper part conjoined tool (11), a lifting lug tool (12), a slip ring tray assembly (13) and a central slip ring mechanism (14);

wherein,

step 2, in the assembly process of the large ladle turret body, a lower connecting tool (10) is arranged between the large ladle turret body (1) and the lower position of the fork-shaped arm (3), an upper connecting tool (11) is arranged between the upper position of the fork-shaped arm (3) and the door-shaped frame (7), and a lifting lug (12) is arranged at the outer side and the far end of the saddle (5);

and 3, in the integral hoisting and positioning process of the large ladle turret body, the whole hoisting and positioning step of the large ladle turret body is carried out through the connection of the double cranes and lifting lug tools (12) at the two ends of the outer side of the saddle (5).

The invention provides a method for installing a large ladle turret of a continuous casting machine, which is characterized in that most of components of the large ladle turret are firstly installed, and then are integrally hoisted and seated, and has the following advantages: in the prior art, the base of the large-package revolving body has a certain height, and if the revolving body and the driving component are installed in advance, the installation process of other subsequent components is needed to be carried out in mid-air, so that the large-package revolving body has a certain danger for operators, and once the base of the large-package revolving body is installed with the revolving body and the driving component, the large-package revolving body has a large volume, and if the large-package revolving body is installed in a factory building in a narrow space, the other subsequent components are installed with insufficient hoisting space, interference, collision and other problems are easily caused, and the like.

In order to facilitate rapid seating in the integral hoisting process and also facilitate installation of the revolving body and the driving component, the installation method of the ladle turret equipment of the continuous casting machine specifically comprises the following steps of,

step 1.1, grouting is carried out on the basis of a rotary base by adopting non-shrinkage concrete, the positions of the base plates are adjusted according to the size of the rotary base (9), and two groups of adjusting base plates are guaranteed to be arranged near each bolt;

step 1.2, hoisting a rotary base (9) above the equipment foundation by using a pouring cross crown block, and adjusting the center of the rotary base (9) to coincide with the transverse center line of the bale; installing all foundation bolts after positioning;

and 1.3, installing a slip ring tray assembly (13) and a central slip ring mechanism (14) in the rotating base (9).

Through the steps, in the installation process of the base of the large-ladle turret, part of driving components are installed in advance, so that the problem that the driving components cannot be installed smoothly due to too small space in the subsequent hoisting and seating process is avoided.

Further, since the installation process of the ladle turret body is performed on the ground in advance, the installation sequence from inside to outside and from near to far can be followed, and thus, the above-mentioned continuous casting machine ladle turret apparatus installation method, in step 2, the ground assembly process of the ladle turret body specifically includes,

step 2.1, firstly assembling a revolving body (1) and a door-shaped frame (7) by using a crane on the ground crossing surface when molten steel is received, paying attention to the direction of the revolving body, and ensuring that a fork arm (3) is positioned at a pouring position after a fork arm (3) is installed;

2.2, one end of the lifting oil cylinder (8) is arranged on the top beam of the door-shaped frame (7), and the lifting oil cylinder is fixed reliably and prevented from swinging;

step 2.3, installing a balance connecting rod (6), hoisting the balance connecting rod (6) by using molten steel receiving straddling a crown block and installing the balance connecting rod (6) on two sides of a gate-type frame (7);

step 2.4, installing the fork arms (3), respectively hoisting the two fork arms (3) by using molten steel to accept a cross crown block and locating on the revolving body (1), and connecting with the other end of the lifting oil cylinder (8), wherein the fixation is firm, and the installation precision requirement of the fork arms (3) should meet the normal execution of lifting action;

step 2.5, the saddle (5) is arranged on the fork arm (3) and is connected with the balance connecting rod (6), and the saddle is fixed firmly;

step 2.6, the weighing block (4) is arranged on the saddle (5);

step 2.7, mounting a platform, a ladder, a safety rail and other accessories;

and 2.8, welding a lower conjoined tool (10) between the lower position of the fork arm (3) and the revolving body (1), welding an upper conjoined tool (11) between the upper position of the fork arm (3) and the portal frame (7), and arranging a lifting lug tool (12) at the outer distal end of the saddle (5).

The installation sequence of assembling firstly and then hoisting is adopted, so that the installation process of the large-package rotary table can be seen, the installation operation of each part is not interfered with each other and is not easy to collide in the whole process of implementing the installation operation, and the installation operation of the rotary part of the large-package rotary table can be realized rapidly and accurately.

Furthermore, the installation process of the large ladle turret provided by the invention follows the installation sequence of first installation and then hoisting, and for this reason, the hoisting process is essentially the whole hoisting operation of the rotary part of the large ladle turret. In the process, the lifting scheme provided by the invention utilizes the existing two crown blocks of a factory building to carry out lifting operation by matching with a lifting appliance pre-installed on the rotating part of the big ladle turret, and in the process, the rotating part of the big ladle turret is supported by an upper one-piece tool and a lower one-piece tool, so that the deformation of the rotating part of the big ladle turret during lifting is avoided; for this purpose, in the above-mentioned installation method of the ladle turret apparatus for a continuous casting machine, in step 3, the whole hoisting and positioning process of the ladle turret body includes,

step 3.1, hoisting the whole ladle turret body by using a main hook of a molten steel receiving overhead travelling crane, and simultaneously, using an auxiliary hook of the molten steel receiving overhead travelling crane to hold a steel wire rope which is hung in advance on a lifting lug (12) on a saddle (5) at one side of a receiving overhead travelling crane to prevent swinging; the attitude of the ladle turret body is such that the fork arms (3) are parallel to the casting flow direction, and molten steel is received to hoist the whole ladle turret body across the main hook of the overhead travelling crane and is placed on a steel plate pre-paved on a casting platform; in the process, the whole bale rotary table body is moved, so that the fork arm (3) on the other side which is not pulled and the saddle (5) thereof are connected with the lifting lug (12), and simultaneously, a casting streamline is crossed until the lower part of a crane lifting hook on one side is poured;

step 3.2, respectively connecting main hooks of the crown block on one side of the casting span and the crown block on one side of the molten steel receiving span with lifting lug tools (12) on the saddle (5) on two sides, and then slowly and cooperatively lifting the main hooks of the crown block on two sides until the steel wire rope is kept almost tensioned;

step 3.3, simultaneously acting a casting span side crown block and a molten steel receiving span side crown block, integrally hoisting the whole ladle turret body in a 'double-machine' cooperative manner, slowly and stably hoisting the ladle turret body to a base of the ladle turret and seating, and then installing and fastening connecting bolts according to a design drawing;

and 3.4, removing all the lifting appliances to finish the installation task.

According to the hoisting method, compared with the traditional hoisting scheme, the hoisting scheme provided by the invention only uses the existing crown block in the factory to implement hoisting operation, and the cost and time for manufacturing the hoisting shoulder pole are saved.

Drawings

FIG. 1 is a schematic view of a part of a bale turret.

Fig. 2 is a schematic diagram illustrating a process of the lifting method according to the present invention.

Fig. 3 is a second schematic process diagram of the hoisting method according to the present invention.

Fig. 4 is a process schematic diagram of a hoisting method according to the present invention.

Detailed Description

The invention is further illustrated by the following specific examples.

As shown in fig. 1, the ladle turret equipment of the continuous casting machine comprises a revolving body (1), a fork arm supporting ball head (2), a fork arm (3), a weighing block (4), a saddle (5), a balance connecting rod (6), a gate frame (7), a lifting cylinder (8) and a turret base (9) with a driving device, and also comprises a lower connecting tool (10), an upper connecting tool (11), a slip ring tray assembly (13) and a central slip ring mechanism (14); meanwhile, in order to facilitate subsequent hoisting operation, the continuous casting machine further comprises a lower part conjoined tool (10), an upper part conjoined tool (11) and a lifting lug tool (12), and the installation method of the ladle turret equipment of the continuous casting machine comprises the following steps:

step 1, mounting a base of a bale rotary table;

step 1.1, grouting is carried out on the basis of a rotary base by adopting non-shrinkage concrete, the positions of the base plates are adjusted according to the size of the rotary base (9), and two groups of adjusting base plates are guaranteed to be arranged near each bolt;

step 1.2, hoisting a rotary base (9) above the equipment foundation by using a pouring cross crown block, and adjusting the center of the rotary base (9) to coincide with the transverse center line of the bale; installing all foundation bolts after positioning;

step 1.3, a slip ring tray assembly (13) and a central slip ring mechanism (14) are arranged in the rotating base (9);

step 2, assembling the ground of the large ladle turret body;

step 2.1, firstly assembling a revolving body (1) and a door-shaped frame (7) by using a crane on the ground crossing surface when molten steel is received, paying attention to the direction of the revolving body, and ensuring that a fork arm (3) is positioned at a pouring position after a fork arm (3) is installed;

2.2, one end of the lifting oil cylinder (8) is arranged on the top beam of the door-shaped frame (7), and the lifting oil cylinder is fixed reliably and prevented from swinging;

step 2.3, installing a balance connecting rod (6), hoisting the balance connecting rod (6) by using molten steel receiving straddling a crown block and installing the balance connecting rod (6) on two sides of a gate-type frame (7);

step 2.4, installing the fork arms (3), respectively hoisting the two fork arms (3) by using molten steel to accept a cross crown block and locating on the revolving body (1), and connecting with the other end of the lifting oil cylinder (8), wherein the fixation is firm, and the installation precision requirement of the fork arms (3) should meet the normal execution of lifting action;

step 2.5, the saddle (5) is arranged on the fork arm (3) and is connected with the balance connecting rod (6), and the saddle is fixed firmly;

step 2.6, the weighing block (4) is arranged on the saddle (5);

step 2.7, mounting a platform, a ladder, a safety rail and other accessories;

step 2.8, a lower conjoined tool (10) is welded and connected between the lower position of the fork arm (3) and the revolving body (1), an upper conjoined tool (11) is welded and connected between the upper position of the fork arm (3) and the portal frame (7), and a lifting lug tool (12) is arranged at the outer side and the far end of the saddle (5);

step 3, integrally hoisting the large ladle turret body into position;

as shown in figure 2 of the drawings,

step 3.1, hoisting the whole ladle turret body by using a main hook of a molten steel receiving overhead travelling crane, and simultaneously, using an auxiliary hook of the molten steel receiving overhead travelling crane to hold a steel wire rope which is hung in advance on a lifting lug (12) on a saddle (5) at one side of a receiving overhead travelling crane to prevent swinging; the attitude of the ladle turret body is such that the fork arms (3) are parallel to the casting flow direction, and molten steel is received to hoist the whole ladle turret body across the main hook of the overhead travelling crane and is placed on a steel plate pre-paved on a casting platform; in the process, the whole bale rotary table body is moved, so that the fork arm (3) on the other side which is not pulled and the saddle (5) thereof are connected with the lifting lug (12), and simultaneously, a casting streamline is crossed until the lower part of a crane lifting hook on one side is poured;

as shown in figure 3 of the drawings,

step 3.2, respectively connecting main hooks of the crown block on one side of the casting span and the crown block on one side of the molten steel receiving span with lifting lug tools (12) on the saddle (5) on two sides, and then slowly and cooperatively lifting the main hooks of the crown block on two sides until the steel wire rope is kept almost tensioned;

as shown in figure 4 of the drawings,

step 3.3, simultaneously acting a casting span side crown block and a molten steel receiving span side crown block, integrally hoisting the whole ladle turret body in a 'double-machine' cooperative manner, slowly and stably hoisting the ladle turret body to a base of the ladle turret and seating, and then installing and fastening connecting bolts according to a design drawing;

and 3.4, removing all the lifting appliances to finish the installation task.

Claims (4)

1. A method for installing a ladle turret device of a continuous casting machine is characterized by comprising the following steps: comprising

Step 1, mounting a base of a bale rotary table;

step 2, assembling the ground of the large ladle turret body;

step 3, integrally hoisting the large ladle turret body into position;

the large-package rotary table comprises a large-package rotary body (1), a fork-type arm supporting ball head (2), a fork-type arm (3), a weighing block (4), a saddle (5), a balance connecting rod (6), a gate-type frame (7), a lifting cylinder (8) and a rotary table base (9) with a driving device, and also comprises a lower part conjoined tool (10), an upper part conjoined tool (11), a lifting lug tool (12), a slip ring tray assembly (13) and a central slip ring mechanism (14);

wherein,

step 2, in the assembly process of the large ladle turret body, a lower connecting tool (10) is arranged between the large ladle turret body (1) and the lower position of the fork-shaped arm (3), an upper connecting tool (11) is arranged between the upper position of the fork-shaped arm (3) and the door-shaped frame (7), and a lifting lug (12) is arranged at the outer side and the far end of the saddle (5);

and 3, in the integral hoisting and positioning process of the large ladle turret body, the whole hoisting and positioning step of the large ladle turret body is carried out through the connection of the double cranes and lifting lug tools (12) at the two ends of the outer side of the saddle (5).

2. The continuous casting machine ladle turret apparatus installation method according to claim 1, characterized in that: in the step 1, the base installation process of the bale turret specifically comprises,

step 1.1, grouting is carried out on the basis of a rotary base by adopting non-shrinkage concrete, the positions of the base plates are adjusted according to the size of the rotary base (9), and two groups of adjusting base plates are guaranteed to be arranged near each bolt;

step 1.2, hoisting a rotary base (9) above the equipment foundation by using a pouring cross crown block, and adjusting the center of the rotary base (9) to coincide with the transverse center line of the bale; installing all foundation bolts after positioning;

and 1.3, installing a slip ring tray assembly (13) and a central slip ring mechanism (14) in the rotating base (9).

3. The continuous casting machine ladle turret apparatus installation method according to claim 1, characterized in that: in the step 2, the ground assembling process of the large ladle turret body specifically comprises the following steps,

step 2.1, firstly assembling a revolving body (1) and a door-shaped frame (7) by using a crane on the ground crossing surface when molten steel is received, paying attention to the direction of the revolving body, and ensuring that a fork arm (3) is positioned at a pouring position after a fork arm (3) is installed;

2.2, one end of the lifting oil cylinder (8) is arranged on the top beam of the door-shaped frame (7), and the lifting oil cylinder is fixed reliably and prevented from swinging;

step 2.3, installing a balance connecting rod (6), hoisting the balance connecting rod (6) by using molten steel receiving straddling a crown block and installing the balance connecting rod (6) on two sides of a gate-type frame (7);

step 2.4, installing the fork arms (3), respectively hoisting the two fork arms (3) by using molten steel to accept a cross crown block and locating on the revolving body (1), and connecting with the other end of the lifting oil cylinder (8), wherein the fixation is firm, and the installation precision requirement of the fork arms (3) should meet the normal execution of lifting action;

step 2.5, the saddle (5) is arranged on the fork arm (3) and is connected with the balance connecting rod (6), and the saddle is fixed firmly;

step 2.6, the weighing block (4) is arranged on the saddle (5);

step 2.7, mounting a platform, a ladder, a safety rail and other accessories;

and 2.8, welding a lower conjoined tool (10) between the lower position of the fork arm (3) and the revolving body (1), welding an upper conjoined tool (11) between the upper position of the fork arm (3) and the portal frame (7), and arranging a lifting lug tool (12) at the outer distal end of the saddle (5).

4. The continuous casting machine ladle turret apparatus installation method according to claim 1, characterized in that: in the step 3, the integral hoisting and positioning process of the large ladle turret body comprises the following steps of,

step 3.1, hoisting the whole ladle turret body by using a main hook of a molten steel receiving overhead travelling crane, and simultaneously, using an auxiliary hook of the molten steel receiving overhead travelling crane to hold a steel wire rope which is hung in advance on a lifting lug (12) on a saddle (5) at one side of a receiving overhead travelling crane to prevent swinging; the attitude of the ladle turret body is such that the fork arms (3) are parallel to the casting flow direction, and molten steel is received to hoist the whole ladle turret body across the main hook of the overhead travelling crane and is placed on a steel plate pre-paved on a casting platform; in the process, the whole bale rotary table body is moved, so that the fork arm (3) on the other side which is not pulled and the saddle (5) thereof are connected with the lifting lug (12), and simultaneously, a casting streamline is crossed until the lower part of a crane lifting hook on one side is poured;

step 3.2, respectively connecting main hooks of the crown block on one side of the casting span and the crown block on one side of the molten steel receiving span with lifting lug tools (12) on the saddle (5) on two sides, and then slowly and cooperatively lifting the main hooks of the crown block on two sides until the steel wire rope is kept almost tensioned;

step 3.3, simultaneously acting a casting span side crown block and a molten steel receiving span side crown block, integrally hoisting the whole ladle turret body in a 'double-machine' cooperative manner, slowly and stably hoisting the ladle turret body to a base of the ladle turret and seating, and then installing and fastening connecting bolts according to a design drawing;

and 3.4, removing all the lifting appliances to finish the installation task.