CN208250348U - A kind of blast furnace replacement sow heat shield traction device - Google Patents

Abstract

The utility model relates to the technical field of blast furnace equipment in ironmaking, and in particular provides a traction device for replacing the main iron ditch heat shield of a blast furnace, which includes two tractor units and rails, and the rails are fixed on the casting plant platform below the heat shield The tractor unit includes wheels, wheel shafts and connecting plates. There are two wheel shafts, which are connected together through the connecting plates. The two ends of the wheel shafts are respectively rotatably fixed to the wheels. Fix traction rings respectively on the far two wheel axles, fixed pulleys are respectively arranged at suitable positions in front of the two traction rings, and one end of the wire rope is fixed on the traction rings, and the other end passes through the fixed pulleys. The utility model solves the problem in the prior art that the heat shield is often burned and cannot be replaced in time.

Description

A traction device for replacing the heat shield of the main iron trough of a blast furnace

technical field

The utility model relates to the technical field of blast furnace equipment in ironmaking, and in particular provides a traction device for replacing a heat shield of a main iron ditch of a blast furnace.

Background technique

At present, when domestic extra-large blast furnaces tap iron, a heat shield must be covered above the main iron ditch to prevent the splashed slag iron from scalding the furnace equipment around the taphole. The heat shield is composed of steel structure and refractory materials, and its own weight is 18 tons. Due to the long-term erosion and erosion of high-temperature molten iron, the parts of the heat shield that contact the molten iron are often damaged and replaced frequently, with an average monthly consumption of 18-20 pieces. When encountering a large blast at the taphole, the heat shield is often burned, or even falls into the main iron ditch, blocking the running track of the hydraulic mud gun, resulting in the failure to block the taphole, and the blast furnace is forced to shut down, seriously affecting The blast furnace is in normal production.

In addition, the frame structure of the tuyere platform and the casthouse platform is composed of two parts. The heat shield is placed on the main iron ditch between the tuyere platform and the casthouse platform. , the heat shield is removed from the main iron ditch by the cover removing machine. The height between the tuyere platform and the casthouse platform is 1.9 meters, the heat shield is 4.8 meters long, 2.78 meters wide and 1.45 meters high. When replacing the heat shield, the hook of the crane crane in front of the furnace cannot turn, so it cannot reach the heat shield. Because the space is too low, the arm of the mobile crane crane cannot reach the heat shield no matter how long it is extended.

In addition, the cover removing machine can only lift the heat shield by 585mm, and remove the heat shield from the main iron channel horizontally, but cannot move vertically. In the past, it took 2.1 hours to replace a heat shield. The method is that workers use chain hoists to move the heat shield longitudinally out of the space between the tuyere platform and the casthouse platform bit by bit, and then use the crane to lift it onto the truck for transportation. Walk. It is time-consuming and laborious, and often affects the normal production of the blast furnace because the heat shield cannot be replaced in time.

Utility model content

In order to solve the above technical problems, the utility model provides a traction device for replacing the heat shield of the main iron trough of the blast furnace to solve the problem that the heat shield in the prior art is often burned and cannot be replaced in time.

The utility model is achieved in this way, a traction device for replacing the heat shield of the main iron ditch of a blast furnace, including two tractor units and rails, the rails are fixed on the casting plant platform below the heat shield, and the tractor unit includes wheels, There are two wheel axles and connecting plates, which are connected together by connecting plates. The two ends of the wheel axles are respectively rotatably fixed to the wheels. The wheels are matched with the rails. The traction rings are respectively fixed, fixed pulleys are respectively arranged at suitable positions in front of the two traction rings, one end of the wire rope is fixed on the traction ring, and the other end passes through the fixed pulleys.

Further, on each tractor unit, one end of the two wheel axles is respectively fixed with a right-angle baffle.

Further, the size of each tractor unit is: length 3690mm, width 240mm, height 200mm, the length of the rails is 9000mm, the span of the two rails is 1710mm, and the two rails extend to the air outlet platform by 4000mm.

Compared with the prior art, the utility model has the advantages of:

1. Quickly and timely replace the heat shield before it burns out, so as to avoid the splashed slag and iron from scalding the furnace equipment around the taphole.

2. When encountering a large blow from the tap hole, replace the heat shield in advance to prevent the heat shield from falling into the main iron ditch and block the running track of the hydraulic mud gun, resulting in the failure to block the tap hole and the blast furnace being forced to shut down Furnace, to ensure the normal production of the blast furnace.

3. In the case that any high-tech advanced lifting machinery is out of reach, it can lift a huge object with a weight of 18 tons, a length of 4.8 meters, a width of 2.78 meters, and a height of 1.45 meters from the gap between the tuyere platform and the casthouse platform. Move in or out.

4. Using fixed pulleys can not save labor, but can change the direction of force. Using any power machinery, such as forklifts, cranes, etc., can pull the heat shield from the gap between the tuyere platform and the casting yard platform by pulling the soft steel wire rope. Move out or move in.

5. Time-saving and labor-saving. It only takes 20 minutes to replace a heat shield, which reduces the labor intensity of workers and improves work efficiency by more than 6 times.

6. The utility model is a special transportation tool, which is cheap and can be used repeatedly.

Description of drawings

Below in conjunction with accompanying drawing and embodiment the utility model is described in further detail:

Fig. 1 is the structural representation of the utility model;

Fig. 2 is a schematic diagram of the size of the utility model;

Fig. 3 is a schematic diagram of the size of the tractor unit of the utility model.

Detailed ways

In order to make the purpose, technical solutions and advantages of the utility model clearer, the utility model will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the utility model, and are not intended to limit the utility model.

Referring to Fig. 1, Fig. 2 and Fig. 3, the utility model provides a traction device for replacing the heat shield of the main iron trench of a blast furnace, which includes two tractor units and a rail 1, and the rail 1 is fixed on the casting plant platform below the heat shield Above, the tractor unit includes a wheel 2, a wheel axle 3 and a connecting plate 4. There are two wheel axles 3, which are connected together through the connecting plate 4. The two ends of the wheel axle 3 are respectively rotatably fixed to the wheel 2. 1 matching, the traction rings 5 are respectively fixed on the two wheel axles 3 farthest from the two tractor units, the fixed pulleys 6 are respectively arranged at suitable positions in front of the two traction rings 5, and one end of the steel wire rope 7 is fixed on the traction ring 5, The other end passes through fixed pulley 6.

On each tractor unit, one end of the two wheel axles is respectively fixed with a right-angle baffle.

As a preferred technical solution, the size of each tractor unit is: length 3690mm, width 240mm, height 200mm, the length of the rails is 9000mm, the span of the two rails is 1710mm, and the two rails extend the air outlet platform 4000mm.

When the old heat shield needs to be removed, use the cover remover to lift the old heat shield, use the crane to hoist the two sets of tractors onto the rail 1 at the same time, and manually push them under the old heat shield, and the cover remover will fall The old heat shield is also removed, and the two sets of tractor units are connected by the heat shield's own gravity. The right-angle baffle 8 is arranged on the side close to the main iron ditch, which can prevent the heat shield from slipping and falling into the main iron ditch. One end of the steel wire rope 7 hooks the traction ring 5 and the other end passes through the fixed pulley 6 to connect with the crane hook. While the crane hook is lifting upwards, the old heat shield is horizontally pulled out of the air outlet platform, and then the old heat shield is directly hoisted by the crane and dropped onto the truck for transport.

Similarly, when a new heat shield needs to be moved in, the two sets of tractors are hoisted on the fixed rail at the same time with the crane, the span between the two sets of tractors is determined according to the length of the heat shield, and the right-angle baffle 8 is set near One side of the main iron ditch can prevent the heat shield from slipping and falling into the main iron ditch, and use the heat shield's own gravity to connect the two sets of tractors. One end of the steel wire rope 7 is hooked to the traction ring 5 and the other end passes through the fixed pulley 6 to connect with the crane hook. When the crane hook is lifted upwards, the new heat shield is dragged horizontally into the tuyere platform, and the new heat shield is lifted by the cover shifter. The heat shield, and remove the two sets of tractors, and use the crane to stack the two sets of tractors and hoist them to a fixed position.

Claims (3)

1. A blast furnace replaces the traction device of the heat shield of the main iron ditch, which is characterized in that it comprises two tractor units and rails, the rails are fixed on the ironworks platform below the heat shield, and the tractor unit includes wheels, wheel axles And the connecting plate, there are two wheel axles, which are connected together through the connecting plate, the two ends of the wheel axle are respectively rotatably fixed to the wheels, the wheels are matched with the rails, and the two wheel axles with the farthest distance between the two tractor units are respectively fixed For the traction ring, fixed pulleys are respectively arranged at suitable positions in front of the two traction rings, and one end of the wire rope is fixed on the traction ring, and the other end passes through the fixed pulley. 2. The traction device for replacing the main iron trough heat shield of the blast furnace according to claim 1, characterized in that, on each of the tractor units, one end of the two wheel axles is respectively fixed with a right-angle baffle. 3. The traction device for replacing the heat shield of the blast furnace according to claim 1, wherein the size of each tractor unit is: 3690mm long, 240mm wide, and 200mm high, and the length of the rail is: 9000mm, the span of the two rails is: 1710mm, and the two rails extend the air outlet platform by 4000mm.