CN217168371U

CN217168371U - Tool for disassembling and assembling foundation screws of furnace door cylinder of LF (ladle furnace)

Info

Publication number: CN217168371U
Application number: CN202123066882.6U
Authority: CN
Inventors: 曲孝伟; 余潭慧
Original assignee: Angang Steel Co Ltd
Current assignee: Angang Steel Co Ltd
Priority date: 2021-12-08
Filing date: 2021-12-08
Publication date: 2022-08-12
Anticipated expiration: 2031-12-08

Abstract

The utility model provides an instrument for dismouting LF stove furnace gate cylinder rag screw, includes extension bar, screw rod, big nut, horizontal pole, screw sleeve, screw rod and screw sleeve become "L" type and fix the both ends at the horizontal pole, big nut spiro union is on the screw rod, the other end fixed connection of extension bar and screw rod. Compared with the prior art, the beneficial effects of the utility model are that: the utility model discloses can realize the work of one-man operation dismouting LF stove furnace gate cylinder lower margin screw, improve work efficiency, shorten the repair time of equipment, reduce intensity of labour, can guarantee operation personnel personal safety, guarantee the maintenance quality. The utility model discloses it is simple effective, be worth promoting.

Description

Tool for disassembling and assembling foundation screws of furnace door cylinder of LF (ladle furnace)

Technical Field

The utility model relates to a metallurgical machinery especially relates to an instrument that is used for dismouting LF stove furnace gate cylinder rag screw.

Background

The LF furnace is used for carrying out external refining on molten steel, a furnace door is arranged on a furnace cover of the LF furnace and used for adding alloy materials and the like into a molten steel tank, the opening and closing of the furnace door of the LF furnace are controlled by an air cylinder, and the air cylinder needs to be replaced once the air cylinder fails. Because the cylinder is located the bell surface, cylinder surface and cylinder lower margin screw fixed connection board difference in height 500mm, the lower margin screw is phi 20 x 100mm, when tearing open, when adorning the screw, two screws in the outside are changed especially, the maintainer does not have the place of standing, the maintainer must lie prone on the cylinder, the side is on one's side, the arm is stretched and just can get the screw, very arduous, the body is unsettled (the next door is the high altitude of 7 meters more high drops), the screw must be worn from the below of the connecting board of fixed lower margin screw during the installation screw, block with the spanner, the screw follows when preventing to twist the screw cap turns, another hand takes the nut to twist, tighten with the spanner, very difficult during the connection, need 2 people to work in coordination together at every turn, can accomplish at least half an hour, unsettled operation is extremely dangerous, workman's intensity of labour has been strengthened.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing an instrument that is used for dismouting LF stove furnace gate cylinder lower margin screw, the utility model discloses can realize the work of one-man operation dismouting LF stove furnace gate cylinder lower margin screw.

In order to achieve the above purpose, the utility model adopts the following technical scheme:

the utility model provides an instrument for dismouting LF stove furnace gate cylinder rag screw, includes extension bar, screw rod, big nut, horizontal pole, screw sleeve, screw rod and screw sleeve become "L" type and fix the both ends at the horizontal pole, big nut spiro union is on the screw rod, the other end fixed connection of extension bar and screw rod.

The inner hole of the screw sleeve is matched with the head of a foundation screw of an air cylinder of the LF furnace door, and one end of the screw sleeve is closed or the inner diameter of the screw sleeve is smaller than the head of the foundation screw of the air cylinder of the LF furnace door.

The large nut is formed by respectively welding and fixing a hexagonal nut on six edges of a hexagonal nut.

The extension bar is provided with a handle.

The distance between the screw sleeve and the screw rod is 120-130 mm.

Compared with the prior art, the beneficial effects of the utility model are that:

the utility model discloses can realize the work of one-man operation dismouting LF stove furnace gate cylinder lower margin screw, improve work efficiency, shorten the repair time of equipment, reduce intensity of labour, can guarantee operation personnel personal safety, guarantee the maintenance quality.

The utility model discloses it is simple effective, be worth promoting.

Drawings

Fig. 1 is a schematic structural diagram of the present invention.

Fig. 2 is a view from a-a of fig. 1.

In the figure: 1. extension bar, 2 big nuts, 3 screws, 4 screw sleeves, 5 handles, 6 cross bars.

Detailed Description

The technical solution in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention.

Referring to fig. 1-2, a tool for disassembling and assembling anchor screws of an air cylinder of an LF furnace door comprises an extension bar 1, a screw rod 3, a large nut 2, a cross rod 6 and a screw sleeve 4, wherein the screw rod 3 and the screw sleeve 4 are fixed at two ends of the cross rod 6 in an L shape, the large nut 2 is screwed on the screw rod 3, and the extension bar 1 is fixedly connected with the other end of the screw rod 3.

The inner hole of the screw sleeve 4 is matched with the head of a foundation screw of an air cylinder of the LF furnace door, and one end of the screw sleeve 4 is closed or the inner diameter of the screw sleeve is smaller than the head of the foundation screw of the air cylinder of the LF furnace door.

The large nut 2 is formed by respectively welding and fixing a hexagonal nut on six edges of the hexagonal nut.

The extension bar 1 is provided with a handle 5.

The distance between the screw sleeve 4 and the screw 3 is 120-130 mm.

The making and using process of the embodiment is as follows:

1) the side surface of the screw sleeve 4 is welded with one end of a steel bar with the length of 120mm and the diameter of 12 mm. In the embodiment, the inner hole of the screw sleeve is a hexagonal hole matched with the head of a hexagonal screw.

2) The other end of the steel bar with the diameter of 12mm is welded with a screw rod 3 with the length of 160mm and M12 into a U shape.

3) A hexagonal nut M12 is screwed on the

screw rod

3, and 6 hexagonal nuts M12 are horizontally welded on 6 side surfaces of the previous hexagonal nut, and 7 nuts form a plane to form a large nut 2.

4) The upper end of the screw rod 3 is welded with an extension bar 1 which is 450mm long and 10mm phi and is provided with a handle 5.

5) Cleaning welding stains, rotating the large nut 2 up and down, and observing whether the large nut 2 rotates up and down flexibly.

6) After being manufactured, the product is put into use on site.

7) Use of the tool: maintainer rides and sits on the pneumatic cylinder, hold the utility model discloses a handle 5, another hand (hold) LF stove furnace gate cylinder rag screw puts into screw sleeve 4, roughly adjusted big nut 2 upper and lower positions (be greater than two bolted connection board thickness), this instrument is held to the hand, let the screw wear from the screw hole under the bolted connection board, be close to the connecting plate to the screw rod 3 at big nut 2 place, work shoes frictioning big nut 2 on with the foot, make its clamping connection board, reach level and vertical location, screw up LF stove furnace gate cylinder rag screw cap, accomplish the screw mounting.

When dismantling LF stove furnace gate cylinder anchor screw, also can fix anchor screw with screw sleeve 4, revolve the twist nut again.

Claims

1. The utility model provides an instrument that is used for dismouting LF stove furnace gate cylinder lower margin screw, a serial communication port, including extension bar, screw rod, big nut, horizontal pole, screw sleeve, screw rod and screw sleeve become "L" type and fix the both ends at the horizontal pole, big nut spiro union is on the screw rod, the other end fixed connection of extension bar and screw rod.

2. The tool for dismounting the foundation screw of the air cylinder of the LF furnace door according to claim 1, wherein an inner hole of the screw sleeve is matched with a head of the foundation screw which is larger than the foundation screw of the air cylinder of the LF furnace door, and one end of the screw sleeve is closed or the inner diameter of the screw sleeve is smaller than the head of the foundation screw of the air cylinder of the LF furnace door.

3. The tool for dismounting the foundation screws of the air cylinder of the furnace door of the LF furnace according to claim 1, wherein the large nuts are respectively welded and fixed with a hexagonal nut on six edges of the hexagonal nut.

4. The tool for dismounting the foundation screw of the air cylinder of the furnace door of the LF furnace as claimed in claim 1, wherein the extension bar is provided with a handle.

5. The tool for dismounting the anchor screw of the air cylinder of the LF furnace door as claimed in claim 1, wherein the distance between the screw sleeve and the screw rod is 120-130 mm.