JPS5930397Y2 - Furnace repair equipment - Google Patents

Description

[Detailed Description of the Invention] Industrial Application Field The present invention relates to a repair device that can be effectively used for repairing various types of converters and other furnaces that generally have narrow furnace openings.

Conventional technology Traditionally, for example, Tupperware is used to repair the tuyeres of AOD furnaces, etc.

Paste and the like are packaged in 5 to 10 kg bags and placed manually at the front of the furnace, but depending on the texture, the above-mentioned feeding method is sometimes difficult because of the large angle of inclination.

In particular, the AOD furnace mouth is smaller than the large converter furnace mouth, so there is a large amount of residual heat, making spraying repairs from the front of the furnace extremely difficult, and also poses safety issues. Ta.

Purpose of the invention The present invention is intended to solve the problems of the prior art, and its purpose is to make the spray pipe have a sufficient angle of elevation and rotation with respect to the surface to be repaired in various types of furnaces, etc. It is an object of the present invention to provide a repair device that can perform sufficient repairs over the entire wall inside the furnace using remote control, and can also improve safety by performing repairs by remote control.

Structure of the Invention In order to achieve the above object, in the present invention, a furnace repair device is formed by forming a gate-shaped support frame with a pair of vertical supports and a horizontal support member, and the center of the horizontal support member is connected to its vertical axis and rotation axis. A pipe holding cylinder is attached to the elevating rod whose axis is aligned with the axis of the vertical support so that it can be raised and lowered, and the blowing pipe is supported on the pipe holding cylinder so that it can move forward and backward and rotate freely.

``With such a configuration, the spray pipe can have a sufficient elevation angle and turning angle.

EXAMPLES Below, the above-mentioned repair device according to the present invention will be explained in detail with reference to examples shown in FIGS. 1 to 6.

In the embodiment shown in FIGS. 1 and 2, the gate-shaped support frame 1 consists of two vertical supports 1a that are substantially erected on the floor surface on the hearth side and a horizontal support member 1 that connects the upper ends of both vertical supports.
A mechanism for raising, lowering, and rotating the spray pipe 2, which will be described later, is provided on the horizontal support member 1b.

In this embodiment, the elevating mechanism includes a vertical elevating rod 4 that penetrates the center of the horizontal support member 1b so as to be able to rise and fall freely, and has a lower end that pivotally supports the pipe holding cylinder 3, and a vertical elevating rod 4 that is guided inward to guide the vertical elevating rod in its upward and downward movement. A lifting rod guide frame 6 incorporating rollers 5, a pipe lifting cylinder 8 whose base end is pivotally supported by a bracket 7 protruding from the horizontal support member 1b, and one end of which is connected to the advancing/retracting rod 8a of the pipe lifting cylinder 8. It is composed of a connecting cord 10 which is tied and the other end is tied to the upper end of the vertical lifting rod 4 via a pulley 9 provided in the guide frame 6.

On the other hand, the turning mechanism is rotatably attached to the horizontal support member 1b with a bearing 11, and has a driven side gear 12 in which the vertical lifting rod 4 is fitted in a non-rotatable but slidable manner. It is composed of a drive side gear 13 that meshes with the drive side gear 13, and a pipe turning motor 14 which has the drive side gear 13 fixed to a rotating shaft and whose main body is attached to a horizontal support member 1b.

In the above basic configuration, the vertical lift axis and the rotation axis of the vertical lift rod 4 are aligned with the axis of the vertical support 1a of the gate-shaped support frame 1, and due to this alignment, the pipe holding cylinder and the spray pipe supported by the pipe holding cylinder are aligned. The pipe can be elevated and turned freely without being hindered by the portal support frame.

Incidentally, the elevating mechanism and the turning mechanism are not limited to those described above, and may be of the form shown in FIG. 4, for example.

That is, the rotary cylinder 16 is rotatably mounted on the horizontal support member 1b via the bearing 15, and the vertical lifting rod 4 is inserted into the rotary cylinder so that it can slide but not rotate. A pipe turning motor 17, a worm gear, and a pipe lifting/lowering motor 18 are attached to the top, respectively, and if necessary, a safety stop limit 19 can also be attached.

The pipe holding cylinder 3, which is pivotally supported at the lower end of the vertical lifting rod 4, is rotatably attached to the swing ring 3a and the swing ring 3a, which is attached to the base end of the vertical lifting rod so as to be able to slide up and down. It consists of a rotating cylindrical body 3b into which the spray pipe 2 is inserted so as to be freely retractable.

A mechanism for rotating the spray pipe 2 around its axis, a mechanism for raising and lowering it, and a mechanism for advancing and retreating are substantially attached to the pipe holding cylinder 3. First, the pipe rotation mechanism rotates the spray pipe 2 with the key 20. Although it is not possible, it is inserted so that it can move forward and backward, and the rotating cylinder body 3
The driven gear 21 is fixed in the middle of b, and the swing ring 3a
It is constructed by mounting a pipe rotation motor 23 having a pinion gear 22 that meshes with a rotation gear attached thereto.

Next, the pipe elevating mechanism has a rotating ring 24 at the rear end of the rotating cylinder.
The telescopic rod 2 of the cylinder 25 for elevating the pipe is formed by attaching the same rotary ring and pivoting the base end to the middle of the vertical elevating rod 4.
It is constructed by connecting the 5a ends.

In addition, the pipe advance/retreat mechanism in this embodiment is
has a double pipe structure consisting of a large pipe 2a and a small pipe 2b, and a large pipe advancing/retracting device 26 is attached to the tip of the rotating cylinder 3b, and a small pipe advancing/retracting device 27 is attached to the rear end of the large pipe 2a. are doing.

Regarding other components in this embodiment,
30 is a material conveying hose that conveys the required spraying material from the material tank 31 into the spraying pipe 2; 32 is a water conveying hose that conveys the required added water from the water tank 33 into the spraying pipe 2; and 34 is a material conveying hose of the spraying pipe 2. It is a spray nozzle attached to the tip.

Next, AO is performed using the repair device of this embodiment having the above configuration.
The repair work for Furnace D and A will be described below.

First, the repair device, which is in the standby position shown by the dotted line when not in use, is brought to the solid line position by driving the pipe lifting mechanism, turning mechanism, rotation mechanism, elevating mechanism, and advance/retreat mechanism integrally or separately, and the spray nozzle 34 is moved to the position shown by the solid line. Place it facing the wall.

The blowing pipe 2 according to the present invention in the above work or operation
Since the pipe posture control mechanism and the pipe attitude control mechanism are suspended from the upper part of the gate-shaped support frame 1, there is nothing under the spray pipe 2 that obstructs the operation of the pipe and the pipe holding cylinder 3, and the elevating rod 4 Since the axis of elevation and rotation of the vertical column 1a coincides with the axis of the vertical support 1a, the spray pipe 2 can take any spraying posture, and the spray nozzle 34 can be accurately opposed to any part of the AOD furnace etc. can be done.

Furthermore, the space below the spray pipe 2 can also be effectively utilized.

Thereafter, the material and water are supplied from the material tank 31 and the water tank 33 to the spray pipe 2, and the spray nozzle 34 sprays the spray material onto the work area.

In the above embodiment, the gate-shaped support frame 1 was fixed on the floor in front of the furnace mouth, but as shown in FIG. It can also be assumed that

In the figure, 42 is a vertical lifting rod, and in this embodiment, the blowing pipe 2 is raised and lowered by the vertical lifting rod 42 using a rack and pinion.
This is done by raising and lowering the

However, the rotation of the spray pipe 2 is effected by the rotation of the turntable 41.

Note that 43 is a switch for setting the amount of elevation of the vertical lifting rod 42.

Effects of the invention As described above, the repair device according to the invention can have the following effects.

(1) By using the gate-shaped support frame, the operation mechanism for the spray pipe is substantially provided above the spray pipe, so that a sufficient working space can be secured below the spray pipe.

(2) Also, align the vertical axis of the vertical frame of the portal support frame with the vertical frame axis of the lifting rod and touch it, so that the movement of the spray pipe is not hindered by the portal support frame and is at a sufficient angle. Can be elevated and rotated,
The spray nozzle can be accurately faced to any location to be worked on, such as AOD furnaces and various other furnaces.

(3) When the gate-shaped support frame is mounted on the traveling truck, it is possible to further provide mobility in addition to the above-mentioned effects.

[Brief explanation of drawings]

Figure 1 is a front view of a repair device for an AOD furnace, etc. according to the present invention;
Fig. 2 is a plan view of the same, Fig. 3 is a partial cross-sectional explanatory view of the pipe lifting and turning mechanism, Fig. 4 is a partial cross-sectional explanatory view of another embodiment of the above configuration, and Fig. 5 is an explanatory partial cross-sectional view of another embodiment of the above-mentioned structure. FIG. 3 is a front view of an embodiment of the invention. In the figure, 1a...vertical support, 1b...horizontal support member, 2...blow pipe, 2a...
・Large pipe, 2b...Small pipe, 3...
・Pipe holding cylinder, 3a... Swing ring, 3b.
... Rotating cylinder, 4 ... Vertical lifting rod, 5.
...Guide roller, 6 ... Lifting rod guide frame, 7 ... Bracket, 8 ... Pipe lifting cylinder, 9 ... Pulley , 10...
・Connection string, 11... Bearing, 12... Driven side gear, 13... Drive side gear, 14...
... Vibrator rotation motor, 15 ... Bearing, 1
6... Rotating cylinder body, 17... Pipe turning motor, 18... Pipe lifting motor, 19
...Stop limit, 20...Key 2
1... Driven side gear, 22... Pinion gear, 23... Pipe rotation motor, 24...
... Rotating ring, 25 ... Pipe elevation cylinder, 25a ... Telescopic rod, 26 ...
...Large pipe advance/retreat device, 27...Small pipe advance/retreat device, 30...Material conveyance hose, 31...
...Material Tankyu 32...Water conveyance hose, 3
3...Water tank, 34...Crest nozzle,
40.--.Traveling trolley.

Claims (1)

[Scope of Claim for Utility Model Registration] A) A gate-type support frame consisting of a pair of vertical supports and a horizontal support member connecting the upper parts of both vertical supports; A lifting rod that is rotatably mounted and whose lifting and rotational axes are aligned with the axis of the vertical support; c) A pipe holding cylinder that is installed at the lower end of the lifting rod so that it can be raised and lowered; 2) It is supported by the pipe holding cylinder so that it can move forward and backward and rotate freely. Blow pipe, and furnace repair equipment.