JPS5835995Y2 - Wind box lifting device for measuring air volume of sintering machine - Google Patents

Description

[Detailed description of the invention] The present invention relates to a wind box elevating device for measuring the air volume of a sintering machine, and in particular, it is a wind box elevating device for measuring air volume of a sintering machine. Regarding a box lifting device.

A Dwight Lloyd type (DL type) sintering machine (hereinafter simply referred to as a sintering machine) is usually used for sintering fine ore in a steelworks.

As shown in Fig. 1, the sintering machine includes a plurality of pallets 2 running on endless tracks, a plurality of wind boxes 4 fixedly installed directly below the pallets 2, and a machine for mixing fine ore and coke onto the pallets 2. It consists of an ore feed hopper 6 into which raw material 8 is charged, and an ignition furnace 10 which ignites the raw material 8 charged in a pallet.In order to obtain a good sintered ore, the grain size, moisture content, and composition of the raw material must be adjusted. Not only the ratio but also the amount of air passing through the raw material layer 8 must be strictly controlled.

For this purpose, an air volume measuring device is required to continuously measure the amount of air passing through the raw material layer 8 in the width direction and length direction of the pallet 2. However, conventionally, there is no satisfactory air volume measuring device, especially a wind box lifting device. A device has yet to be disclosed that allows the wind box 12 to be raised and lowered at the same time, and in which the wind box 12 and the sintered ore 8 in the pallet 2 can be easily separated from each other in case of trouble such as power source failure. has not yet been reached.

The purpose of this invention is to eliminate the drawbacks of the conventional wind box lifting device for measuring air volume in sintering machines, to be able to lift and lower multiple wind boxes at the same time, and to be able to measure air volume even in the unlikely event of trouble such as power source failure. To provide a wind box elevating device for measuring air volume, which has a simple structure and is easy to operate, which can easily release the contact between the wind box and sintered ore.

The main points of this invention are as follows.

That is, in a wind box lifting device for measuring air volume of a sintering machine mounted on an air volume measuring cart that moves in sync with a moving pallet cart, the wind box lifting drive device is fixedly installed upright on the cart; A wind box elevating frame is attached to the wind box elevating drive device so as to be able to rise and fall freely, a plurality of wind boxes are fixed to the frame, and the wind box elevating frame is located directly below the end of the wind box elevating frame and is mounted on the air volume measuring trolley. A lifting rod support device that is fixed to the sintering machine and has slide bearings on the top and bottom, a guide rail that is fixed to the frame on the sintering machine discharge side and guides in the vertical direction, and a roller that moves on the guide rail at one end. This is a wind box lifting device for measuring air volume of a sintering machine, comprising a lifting rod that passes through the slide bearing and reaches just below an end of the wind box lifting frame.

The necessary functions of the wind box elevating device for measuring the air volume of a sintering machine are listed below with reference to FIG.

(a) It must be mounted on an air volume measuring cart 14 that moves in sync with the pallet 2 that moves in the direction of the arrow in FIG.

(b) A plurality of wind boxes 12 can be raised and lowered at the same time.

(c) At the air volume measurement starting point A, move the wind box 12 to the pallet 2.
to be brought into contact with the raw material layer 8, and to be able to easily release the contact at the air volume measurement end point B.

(d) Even in the unlikely event that the drive source of the lifting device malfunctions, the wind box 12 mounted on the trolley 14 can be easily raised to release the contact between the wind box 12 and the raw material layer 8.

The present invention satisfies all of the above functions, and preferred embodiments thereof will be described with reference to the accompanying drawings.

As shown in Figure 2.3.4, the wind box lifting device of the present invention is roughly divided into a regular wind box lifting device 1 and an emergency wind box lifting device II.

(2)-a Regular wind box lifting device The air volume measuring trolley 14 is connected to the pallet 2 at the air volume measurement starting point A in FIG. 1, and the connection is released at the air volume measurement ending point B.

A wind box elevating device 20 is fixedly installed on the air volume measuring cart 14 in an upright manner.

The wind box lifting device 20 connects one end of the wire 21 to the eye bolt 32 attached to the wind box lifting frame 30 side with a shackle 22,
Installed via simple 23, eye plate 24 on the other end
The hanging tool 25 with the hanging tool 25 attached, the sheave 26 that supports the hanging tool 25, and the sheave 26 that is directly fixed to the air volume measuring trolley 14.
6, a cylinder 28 for raising and lowering the wind box, etc.

As described above, the wind box lifting frame 30 is suspended by the wind box lifting devices 20 on both sides so as to be able to rise and fall freely.

Further, since the plurality of wind boxes 12 are fixedly installed on the lifting frame 30, the plurality of wind boxes 12 can be raised and lowered to any height by the lifting device 20.

II-a Emergency wind box lifting device Positioned directly below the end 30A of the wind box lifting frame 30, lifting rod support devices 40A and 40B are provided at least at two locations above and below on the air volume measurement trolley 14, with a A plurality of slide bearings 41 are provided.

In this embodiment, three slide bearings 41 are fixedly installed, 41A directly below the end portion 30A, 41B on the truck frame 14, and 41C on the auxiliary frame 42, and the rod 43 is moved up and down by these slide bearings 41. The freely supported slide bearing 41A also serves as a stopper for regulating the lower limit position of the lifting rod 43.

The top of the rod 43 is connected to the end 30A of the wind box lifting frame 30.
However, under normal conditions, a gap 44 is provided between the end portion 30A and the top of the rod 43.

A grooved roller 46 is attached to the lower end of the rod 43, and a metal rod 48 for preventing rotation of the rod 43 is also provided.

On the other hand, at the air volume measurement end point B in FIG. 1 on the ore discharge side of the sintering machine, as shown in FIG. A grooved roller 46 at the lower end of the roller 43 is guided to run.

Note that the air volume measurement cart 14 is moved by running wheels 58 that are driven by a drive motor 56 on rails 54, and in normal conditions, a limit switch 62 is used to kick the striker 60 and lower the cylinder rod 29.
is provided.

Further, the wind box 12 for measuring air volume is usually provided with a hot wire anemometer 13.

Next, the regular wind box lifting device ■ and the emergency wind box lifting device II
The effect of this will be explained.

(2-b) Operation of the regular air box lifting device I At the air volume measurement starting point A shown in FIG. 1, the air box 12 stands by without contacting the surface of the sintering raw material 8, as shown in FIG.

Once the trolley 14 is connected to the pallet 2 and ready to travel, the sequence is such that the wind box lifting cylinder 28 operates in the direction of raising the cylinder rod 29. The elevating frame 30 is lowered, and the lower end of the wind box 12 is exposed to the sintered ore 8 as shown in FIG.
air volume measurement begins.

When the trolley 14 reaches the end point B of FIG. 1 while connected to the pallet 2, the limit switch 62 turns on the striker 60 as shown in FIG.
Since the sequence operates in the direction of lowering the wind box, the wind box lifting frame 30 is raised via the hanging device 25,
The lower end of the wind box 12 is housed at a position away from the surface of the sintered ore 8, as shown in FIG.

When the connection between the truck 14 and the pallet 2 is released in this state, the truck 14 is driven by the drive motor 56 and moves to the first position.
The system returns to the air volume measurement starting point A in the figure, waits until the next air volume measurement, and repeats the same operation.

II-b Operation of the emergency wind box lifting device II Electricity, hydraulic pressure, or pneumatics can be used as the power source for the wind box lifting cylinder 28, but the trolley 14 is located at the air volume measurement end point B in FIG. Even if the cylinder 28 reaches this point, some trouble may cause the cylinder 28 to become inoperable.

In such an emergency, if the wind box 12 remains in contact with the surface layer of the sintered ore 8, the cart 14 will fall, leading to damage to the cart 14 and the sintering machine. This system works to prevent accidents from occurring.

At the air volume measurement starting point A in FIG. 1, as shown in FIG. There is a gap 44 between the upper end of the rod 43 of the box lifting device II, and the weight load of the wind box 12 does not act on the rod 43.

However, if the cylinder 28 is inoperable even when the truck 14 reaches the air volume measurement end point B in FIG. As shown in FIG. 4 and FIG. It can be separated from the surface layer.

As described above, according to the present invention, even if the power source does not operate, the wind box 12 is moved to the pallet 2 at the air volume measurement end point B.
It is possible to safely remove it from above the sintered ore 8 inside.

As shown in the above embodiment of the present invention, the wind box lifting device for measuring air volume of a sintering machine according to the present invention has wind box lifting devices for regular use and emergency use, and overcomes the conventional drawbacks of this type of device. However, we were able to achieve the following effects.

(a) The regular wind box lifting device has a structure in which the wind box is fixed to a wind box lifting frame that is raised and lowered by a cylinder, so multiple wind boxes can be raised and lowered at the same time.

(b) Even if the power source fails and does not operate, the wind box can be mechanically lifted away from the surface of the sintered ore inside the pallet using an emergency wind box lifting device, ensuring operational safety. can.

[Brief explanation of the drawing]

Figure 1 is a schematic sectional view showing the entire sintering machine, Figures 2 to 5
The figure shows the wind box lifting device according to the present invention, Fig. 2 is a perspective view showing the entire air volume measuring device, Fig. 3 is a front view showing the wind box in a lowered state, and Fig. 4 is a raised wind box. FIG. 5 is a front view showing the state, and FIG. 5 is a side view showing the operation of the emergency wind box lifting device in an emergency. 2... Pallet, 8... Sintering raw material (sintered ore), A... Air volume measurement starting point, B...
・Air volume measurement end point, 12... Wind box, 14...
... Air volume measurement trolley, 25 ... Hanging tool, 26.
... Sheave, 27 ... Sheave support bracket, 28 ... Wind box lifting cylinder, 30.
...Wind box lifting frame, 40 (40A, 40B
)... Lifting rod support device, 41 (41A,
41B, 41C)...Slide bearing, 43...
... Lifting rod, 46 ... Grooved roller, 5
0... Sintering machine mount, 52... Guide rail.

Claims (1)

[Scope of utility model registration request] In a wind box lifting device for measuring the air volume of a sintering machine mounted on an air volume measuring trolley that moves in sync with a moving pallet trolley,
a wind box lifting and lowering drive device fixedly installed upright on the trolley;
A wind box lifting frame attached to the wind box lifting drive device so as to be able to rise and fall freely; a plurality of wind boxes fixed to the frame; A lifting rod support device that is fixed to the sintering machine and has slide bearings on the top and bottom, a guide rail that is fixed to the frame on the sintering machine discharge side and guides in the vertical direction, and a roller that moves on the guide rail at one end. A wind box lifting device for measuring air volume of a sintering machine, comprising a lifting rod that passes through the slide bearing and reaches just below an end of the wind box lifting frame.