CN207987275U - A kind of blast furnace replaces rock drill and lifts trolley - Google Patents

Abstract

The utility model is related to blast furnace technical field of auxiliary equipment in smelting iron, it specifically provides a kind of blast furnace and replaces rock drill and lift trolley, including lifting tablet, telescopic shock absorber, hydraulic jack, support tablet and universal wheel, telescopic shock absorber is equipped with 4, and the upper end of 4 telescopic shock absorbers is fixed at 4 angles for lifting tablet, lower end is fixed at 4 angles of support tablet, is supported and is fixed two hydraulic jacks on tablet, universal wheel is equipped with 4, is connected at 4 angles of support tablet lower surface.The utility model solves in the prior art because rock drill cannot be replaced in time, influences the problem of blast furnace normally taps a blast furnace.

Description

Lifting trolley for blast furnace replacement rock drill

technical field

The utility model relates to the technical field of blast furnace auxiliary equipment in ironmaking, and in particular provides a lifting trolley for replacing a rock drill for a blast furnace.

Background technique

At present, the 4747m ³ blast furnace of Benxi Iron and Steel Co., Ltd. is one of the super large blast furnaces in China. There are 4 casthouses in total. Due to the limited plane space, the hydraulic gun and taphole machine are arranged on the same side of the iron ditch, and the foundation positions of the two equipment are far apart. It is relatively close and sandwiched between the tuyere platform and the frame structure of the casthouse platform. This arrangement saves the plane space in front of the furnace, but the three-dimensional space for equipment maintenance is relatively small, which increases the difficulty of maintenance operations.

In addition, the rock drilling machine is hung upside down on the beam of the tap hole machine. In the past, when the rock drilling machine was replaced, the crane in front of the furnace could not reach it, the crane could not get in, and the forklift could not be lifted in place. The workers had to use chain hoists to move the rock drilling machine bit by bit. Move it out between the tuyere platform and the casthouse platform, and then use the crane to hoist it to the truck for transportation. It takes 5.5 hours to replace a rock drill, which is time-consuming and laborious. Often because the rock drill cannot be replaced in time, the tap hole cannot be opened in time and affects the normal tapping of the blast furnace.

In addition, if the blast furnace taphole cannot be opened in time, there will be a large amount of slag and iron in the hearth, which will affect the smooth operation of the blast furnace and cause the blast furnace to be suffocated and not accept the air volume. The rise of the iron surface in the hearth caused the tuyere burn-through accident. Once the tuyere burned through, due to the large amount of slag and iron in the hearth, slag filling was often caused when the wind was reduced, causing huge losses to the blast furnace.

Utility model content

In order to solve the above technical problems, the utility model provides a lifting trolley for replacing rock drills for blast furnaces, so as to solve the problem in the prior art that the normal tapping of blast furnaces is affected because the rock drills cannot be replaced in time.

The utility model is achieved in this way. A lifting trolley for replacing a rock drill for a blast furnace includes a lifting plate, a cylindrical shock absorber, a hydraulic jack, a supporting plate and a universal wheel. There are 4 cylindrical shock absorbers, and 4 The upper end of a cylindrical shock absorber is fixed at the 4 corners of the lifting plate, the lower end is fixed at the 4 corners of the supporting plate, two hydraulic jacks are fixed on the supporting plate, and there are 4 universal wheels connected to the supporting plate. 4 corners of the lower surface of the plate.

Further, the cylindrical shock absorber includes a guide rod, a spring and an outer cylinder, the guide rod is connected to the spring, the lower end of the spring is fixed in the outer cylinder, the upper end of the guide rod is fixedly connected to the lifting plate, and the lower end of the outer cylinder is fixedly connected to the Support the slab.

Further, the supporting plate is a hot-rolled steel plate with a thickness of 16 mm; the supporting plate is a hot-rolled steel plate with a thickness of 20 mm.

Further, the maximum lifting height of the lifting platform is 350mm.

Further, the length of the lifting platform is 1300mm, the width is 700mm, and the height of the lifting trolley is 780mm.

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

1. The structure is simple, the specificity is strong, the work efficiency can be improved by more than 3 times during inspection and maintenance, and it is easy to use;

2. It can drill into a very narrow working space. When any high-tech advanced lifting machinery is out of reach, it can hang a rock drill with a weight of 1.8 tons and a length of 1.2 meters upside down on the blast furnace tap hole machine from the tuyere platform. and move into or out of the cracks of the casthouse platform;

3. Time-saving and labor-saving, it only takes 1 hour to replace a rock drill, which reduces the labor intensity of workers and avoids potential safety hazards caused by cross-operation of multiple types of work in space;

4. It has an independent hydraulic power device, and does not need to install feeder cables or contact conductive devices;

5. Freedom of movement, under the conditions of its lifting capacity and external dimensions, it can undertake most of the lifting work in the entire blast furnace hearth or in the cracks;

6. There is no need for fixed structures such as overhead rails, so infrastructure investment, production costs or maintenance costs can be reduced.

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.

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, the utility model provides a lifting trolley for replacing a rock drill for a blast furnace, which includes a lifting plate 1, a cylindrical shock absorber 2, a hydraulic jack 3, a supporting plate 4 and a universal wheel 5, and the cylindrical shock absorber 2 is set There are four, and the upper ends of the four cylinder shock absorbers 2 are fixed at the four corners of the lifting plate 1, and the lower ends are fixed at the four corners of the supporting plate 4, and two hydraulic jacks 3 are fixed on the supporting plate 4, There are 4 universal wheels 5 connected to the 4 corners of the lower surface of the supporting plate 4 .

When it is necessary to dismantle the old rock drilling machine, push the lifting trolley under the taphole machine, and reciprocate the crank handle of the hydraulic jack 3 to make the manual oil pump continuously press oil into the oil cylinder. Due to the continuous increase of oil pressure in the oil cylinder, the piston is forced to Push the lifting plate 1 to move upward together. When the lifting plate 1 is close to the rock drill, remove the fastening bolts of the rock drill, and then open the oil return valve of the hydraulic jack 3, and the high-pressure oil in the oil cylinder will flow back to the oil storage chamber, so the rock drill forces the piston drop to its original position. Lift the trolley out of the narrow space, and then directly hoist the old rock drill with the crane and drop it onto the truck for transport.

In the same way, when a new rock drill needs to be installed, first, the crown crane lifts the new rock drill to the lifting trolley, pushes the lifting trolley to the bottom of the tap hole driver, and installs the new rock drilling machine in place in the same way.

As a specific embodiment, the cylindrical shock absorber 2 includes a guide rod 2A, a spring 2B and an outer cylinder 2C, the guide rod 2A is connected to the spring 2B, the lower end of the spring 2B is fixed in the outer cylinder 2C, and the upper end of the guide rod 2A is fixed The lifting plate 1 is connected, and the lower end of the outer cylinder 2C is fixedly linked with the supporting plate 4 .

Preferably, the supporting plate is a hot-rolled steel plate with a thickness of 16 mm; the supporting plate is a hot-rolled steel plate with a thickness of 20 mm.

In order to adapt to the installation height of the rock drilling machine, as an improvement of the technical solution, the maximum lifting height of the lifting plate 1 is 350 mm.

In order to adapt to the working environment of the lifting trolley, as an improvement of the technical solution, the length of the lifting flat plate 1 is 1300mm, the width is 700mm, and the height of the lifting trolley is 780mm.

Claims (5)

1. a kind of blast furnace replaces rock drill and lifts trolley, which is characterized in that including lifting tablet, telescopic shock absorber, hydraulic jack Top, support tablet and universal wheel, telescopic shock absorber is equipped with 4, and the upper end of 4 telescopic shock absorbers is fixed on and lifts the 4 of tablet At a angle, lower end is fixed at 4 angles of support tablet, is supported and is fixed two hydraulic jacks on tablet, and universal wheel is equipped with 4 It is a, it is connected at 4 angles of support tablet lower surface.

2. blast furnace described in accordance with the claim 1 replaces rock drill and lifts trolley, which is characterized in that the telescopic shock absorber includes Guide rod, spring and outer barrel, guide rod connecting spring, lower spring end are fixed in outer barrel, and the upper end of guide rod is fixedly connected with institute It states and lifts tablet, tablet is supported described in the fixed-link of outer barrel lower end.

3. blast furnace described in accordance with the claim 1 replaces rock drill and lifts trolley, which is characterized in that the tablet of lifting is thickness The hot rolled steel plate of 16mm；The hot rolled steel plate that the support tablet is thickness 20mm.

4. blast furnace described in accordance with the claim 1 replaces rock drill and lifts trolley, which is characterized in that the highest for lifting tablet It is 350mm to lift height.

5. blast furnace described in accordance with the claim 1 replaces rock drill and lifts trolley, which is characterized in that described to lift a length of of tablet 1300mm, width 700mm, the height for lifting trolley are 780mm.