JPH0322223B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a lining device that can be effectively used for lining various metallurgical containers, particularly containers with small or narrow furnace openings such as pig iron mixer trucks and large internal spaces. .

Conventionally, various types of equipment have been developed for the purpose of the above-mentioned lining work, and one of them is the Jikosho
There is a device described in Japanese Patent No. 57-46055. This divides the nozzle support tube into at least three parts, a first support tube, a second support tube, and a third support tube, and connects them to each other by joints so that the nozzle can be freely rotated. It is connected to. With this configuration, the nozzle can be extended deep into the pig iron mixer car, and the necessary lining work can be performed. Generally, lining work is often performed hot, and in that case, the support tube and nozzle are exposed to high temperatures. However, the above-mentioned lining device does not take any measures to protect against hot work, and has a problem in that respect. Furthermore, in the above-mentioned lining device, the first, second, and third support tubes are linear when charging the pig iron mixer, so the height of the entire device including the machine frame is significantly increased, which reduces equipment costs. It was considered expensive.

In addition, Japanese Patent Application Laid-open No. 54-77651 discloses a trunk, a fuselage supporting the trunk, and a body pivotally attached to the tip of the trunk,
A lining device made of sprayed pulp that is rotatable at any angle is disclosed. Similar to the device described in the above-mentioned Japanese Utility Model Publication No. 57-46055, this device can also extend the spray nozzle deep into the pig iron mixer car and perform the required lining. However, even with this equipment, sufficient measures have not been taken to prevent hot repairs. Specifically, even though the main body itself is water-cooled, the material hose that supplies the spray material to the spray nozzle, the control line for nozzle rotation, etc. They were left exposed to high heat, and there were insufficient protection measures from dust.

The present invention is capable of solving the drawbacks of the prior art, and provides a lining device that can efficiently repair a pig iron mixer truck, etc. while sufficiently protecting material hoses, etc. from high heat and dust even in hot conditions. The purpose is to

In the present invention, a branching column is connected to the lower part of the lifting column supported on the machine frame, and the branching column is made up of a pair of branching rods and forms an arm storage space with openings on both sides between the two branching rods. This invention relates to a lining device having a freely collapsible blowpipe, characterized in that a pipe support arm containing the blowpipe is attached to the folding itself, and a protective passage for material hoses, etc. is formed in each branching rod. .

The present invention will be specifically explained below with reference to an embodiment shown in the attached drawings.

1 and 2 show the overall structure of a lining device according to the present invention, in which a gate-type machine frame 1 has an opening 2 at the top and is arranged to straddle a pig iron mixing car 3. It is mounted on the floor surface 4. In addition, the gate-shaped machine frame 1 can also be made into a trolley. A truck 7 is mounted on the upper frame 5 of the gate-shaped machine frame 1 via rails 6 so as to be movable in a direction orthogonal to the axis of the pig iron mixer truck 3. The truck 7 has an elevating column 8 attached to it so as to pass through the truck, and is further equipped with a column elevating mechanism 9 and a column rotating mechanism 10 that raise and lower the elevating columns 8 and rotate them. As shown in FIG. 4, the elevating column 8 consists of an outer shell 8a and an inner shell 8b, with cooling water passages 8c and 8 provided between the shells 8a and 8b.
d. The vertical support 8 has a branch support 100 connected to its lower end via a flange 11, and the branch support 100 forms an arm storage space 12 between a pair of parallel branching rods 100a and 100b. Further, the branching strut 100 has a base end rotatably connected to the base end of a pipe support arm 13 having a built-in blowing pipe 60, and by rotating the pipe supporting arm 13, its axis is aligned with the axis of the branching strut 100. By aligning the pipe support arm 13 with the above, the pipe support arm 13 is completely folded and stored within the arm storage space 12 of the branch column 100.

3 to 5 show the detailed structures of the column lifting mechanism 9 and the column rotating mechanism 10. First, the column rotating mechanism 10 will be described. 20 is a hole drilled into the cart 7 in order to insert the lifting column 8. Through hole provided, 21
22 is a rotating gear rotatably attached to the circular fixed pedestal 21 via a bearing 23, and 24 is fixed to the lower end of the rotating gear 22. A horizontal revolving body 25 is fixed to the output shaft of a rotary motor 26 mounted on the trolley 7, and a pinion gear meshing with the rotation gear 22; This is a guide wheel that engages with a required number of guide ribs 28. With this configuration, the rotation motor 26 is driven by the pinion gear 25, the swing gear 22, the horizontal rotating body 24,
The lifting column 8 is rotated via the guide rib 28, and the pipe support arm 13 is also rotated together. The column elevating mechanism 9 is substantially provided on the horizontal revolving body 24, and in FIGS. 1 and 5, 30 is a rack fixed in the axial direction on the outer peripheral surface of the elevating column 8, and 31 is the same rack. 30
32 is a pinion mounting shaft to which the pinion 31 is attached and is rotatably supported by a bearing 33; 34 is a reduction gear box that connects the pinion mounting shaft with the lifting motor 35. With this configuration, the lifting motor 35 is driven by the reduction gearbox 34, the pinion 31, and the rack 3.
The lifting column 8 and the branching column 100 are raised and lowered via the 0.

The detailed structures of the branch strut 100 and the pipe support arm 13 are shown in FIGS. 6 to 12. As is clear from FIGS. 7 and 8, each of the branching rods 100a, 100b has a semicylindrical shape to have sufficient rigidity, and has a double shell structure consisting of an outer shell 40 and an inner shell 41. . A protection passage 42 is formed within the inner shell 41, and a material hose or the like is encircled within the protection passage 42. Specifically, a material hose 43, an arm rotation drive device 44, and a purge air pipe 45 are enclosed within the branching rod 100a, and a pipe rotation motor 70, which will be described later, is located within the branching rod 100b. Pipe retraction motor 71, control wire 46 for furnace observation devices 80 and 81, and water hose 47
and purge air piping 48 are enclosed.
In the above configuration, the arm rotation drive device 44
In this embodiment, sprocket wheels 44a and 44b are rotatably attached to the upper and lower ends of the branching rod 100a, and an endless chain 44d having a ball screw 44c in the middle is installed between both sprocket wheels.
The threaded cylinder 44e is screwed around the ball screw as an axis, and the threaded cylinder is connected to the pinion 44h and the wheel 44.
The ball screw is rotated by a motor 44f via a motor 44f, thereby moving the ball screw forward and backward.
Note that 44g is a block that restricts the rotation of the ball screw. In addition, cooling water passages 49 and 50 are formed by partition walls 51 in the space between the outer shell 40 and the inner shell 41, specifically, 49 forms an outgoing path, 50 forms a return path, and each lift column 8 cooling water passage 8c,
Contact 8d. With this configuration, the material hose 43 and the like are not only protected from high temperatures, but also completely protected from dust. In addition, 14 is an expansion prevention piece. 1 from Figures 6 and 9
FIG. 2 shows the detailed structure of the pipe support arm 13 that houses the spray pipe 60. The pipe support arm 13 has an arm joint 13a and an arm body 1.
3b and more. Regarding the arm joint part 13a, 61 and 62 are branching rods 100a, 1
The first hollow rotation shafts 63 and 64, which are fixed to both sides of the arm joint portion 13a of both bearings 61 and 62, are rotatably supported. Further, the first hollow rotating shaft 63 has a swivel joint therein for connecting the material hose 43 to a feeding hose 66 wound around a hose storage drum 65 rotatably disposed within the joint portion 13a. It consists of Specifically, such a swivel joint includes a second hollow rotating shaft 67a on the material hose side that connects one end to the material hose 43 in the first hollow rotating shaft 63, and a second hollow rotating shaft 67a on the material hose side that connects one end to the feeding hose 66 so as to be relatively rotatable. Second hollow rotating shaft 67b
It is constructed by attaching it rotatably. Note that 65a is a spring that provides rewinding to the hose storage drum 65. Next, if we talk about the arm body 13b, the arm body 13b
is a long spray pipe 60 connected to a delivery hose 66 at one end and having a spray nozzle 68 at the other end.
It is long enough to accommodate. Further, the arm body 13b has a through hole 69 at one end thereof to allow the blowing pipe 60 to move relative to the arm body 13b (advance and retreat). 11 and 12 show a pipe advancing/retracting mechanism and a pipe rotating mechanism for advancing and retreating the spray pipe 60, and reference numerals 70 and 71 are pipe rotating mechanisms attached to a bracket 13c provided inside the pipe support arm 13. A motor and a motor for advancing and retracting the pipe, 72 and 73 are spline shafts and a ball screw shaft connected to the motors 70 and 71, and 74 has one end screwed to the ball screw shaft 73 and the other end connected to the spray pipe 60 via a swivel joint 75. A moving plate 77 is attached to the spline shaft 72 and engages with the moving plate 74 in the middle, and 78 is a driving side gear connected to the spray pipe 60. This is a driven gear that is fixed and meshes with the driving gear 77. With this configuration, the motor 71 for advancing and retracting the arm is driven to advance and retreat the spray pipe 60 via the ball screw shaft 73 and the swivel joint 75 of the moving plate 74, while the motor 70 for rotating the pipe is driven by the spline shaft 72. , driving side gear 77, driven side gear 7
8 to rotate the spray pipe 60.

Note that an in-furnace observation device is provided at the tip of the arm main body 13b, and this device is composed of a camera 80 and an illumination device 81 in this embodiment.

Furthermore, the arm 13 has a water-cooled jacket structure similar to the branch column 100, and as shown in FIGS. 9 and 10, the arm 13 is connected to the outer shell 90.
and an inner shell 91, and this outer wall 90
A cooling water flow path is formed between the inner wall 91 and the inner wall 91, and the cooling water flow path is connected to the cooling water flow paths of the branching rods 100a and 100b. Note that arrows a, b and arrows a' to h' are branching rods 100
These are the cooling water paths a and 100b. Further, 92 indicates a cooling gas flow path to the bearing 61.

Next, lining work using the lining device having the above configuration will be described.

As shown by the solid line in FIG. 1, the bogie 7 is moved to a position where the lifting column 8 and the branching column 100 are directly above the opening 2 of the pig iron mixer car 3. At this point, the pipe support arm 13 is stored in the pipe support arm storage space 12 of the branch column 100. Next, the cooling water supply mechanism and the air supply mechanism (not shown) are operated to raise and lower the elevating column 8 and the branching column 100.
Cooling water flows into the pipe support arm 13 for cooling, and purge air flows through the pipe support arm 13. Thereafter, the column lifting mechanism 9 is driven to lower the branching column 100 together with the lifting column 8 to the pig iron mixer 3 and take the position shown by the dotted line. Next, the arm rotation drive device 44 in the branching member 100a is driven to rotate the arm approximately 90 degrees clockwise to take the position shown by the dotted line. Drive the pipe advancing/retracting mechanism to advance the blowing pipe 60 from the arm 13, and if necessary, drive the pipe rotation mechanism to rotate the blowing pipe 60, so that the blowing nozzle 68 is accurately moved to the repaired area in the pig iron mixer 3. to confront. Next, a refractory supply mechanism (not shown) is activated to spray the material (refractory) onto the area to be repaired via the material hose 43, feed hose 66, spray pipe 60, and spray nozzle 68.

In the above lining work, the branch column 100 and the pipe support arm 13 are sufficiently cooled with cooling water as described above, and the branch column 100 and the pipe support arm 13 are sufficiently cooled with cooling water.
00 has a sealed protection passage inside, so
The material hose 43, control wire 46, etc. can be sufficiently protected not only from high temperatures but also from dust. Furthermore, the air supplied into the pipe support arm 13 can prevent dust from adhering to the furnace observation device inside the pipe support arm 13, and a clear field of view can be ensured.

As described above, the lining device according to the present invention has the effect of being able to efficiently repair the inside of a container such as an iron mixer car even during hot conditions.

[Brief explanation of drawings]

FIG. 1 is a front view of the lining device according to the present invention, FIG. 2 is a view taken along the line shown in FIG. 1, and FIG.
The figure is an enlarged front cross-sectional view of the column rotation mechanism, FIG. 4 is a view taken along the line shown in FIG. 3, and FIG.
Figure 6 is an enlarged front view of the branch strut;
The figures are a cross-sectional view taken along the line in Figure 7, Figure 9 is an enlarged cross-sectional front view of the arm joint, Figure 10 is a cross-sectional view taken along the line in Figure 9, and Figure 11 is an enlarged view of the pipe rotation mechanism and the pipe advance/retreat mechanism. The front view and FIG. 12 are sectional views taken along the line of FIG. 11. In the figure, 1...Gate type machine frame, 2...Opening, 3...Pig mixer car, 4...Floor surface, 5...Upper frame, 6...Rail, 7...Dolly, 8...Elevating column, 9... Strut lifting mechanism, 10... Strut rotation mechanism, 11... Flange, 12... Arm storage space, 13... Pipe support arm, 13a... Arm joint, 13b...
Arm body, 13c... Bracket, 14... Expansion prevention piece, 20... Through hole, 21... Annular fixed pedestal, 22... Swivel gear, 23... Bearing, 24...
Horizontal rotating body, 25... Pinion gear, 26... Rotating motor, 27... Guide wheel, 28... Guide rib, 30... Rack, 31... Pinion, 32
... Pinion mounting shaft, 33 ... Bearing, 34 ... Reduction gear box, 35 ... Lifting motor, 40 ...
...Outer shell, 41...Inner shell, 42...Protection passage, 43
...Material hose, 44...Arm rotation drive device, 45...Purge air piping, 46...Control wire, 47...Water hose, 48...Purge air piping, 49...Cooling water passage, 50 ...Cooling water passage,
60... Blow pipe, 61... Bearing, 62... Bearing, 63... First hollow rotating shaft, 64... First hollow rotating shaft, 65... Hose storage drum, 66... Feeding hose, 67a, 67b ...Second hollow rotating shaft,
68...Blowing nozzle, 69...Through hole, 70...Pipe rotation motor, 71...Pipe advance/retreat motor, 72...Spline shaft, 73...Ball screw shaft, 74...Moving plate, 75...Swivel Joint, 76...Guide rail, 77...Drive side gear, 78...Driven side gear, 80...Camera, 8
1...Lighting device, 90...Outer wall, 91...Inner wall,
100...branch support, 100a...branch configuration rod,
100b...branch configuration rod.

Claims (1)

[Claims] 1 A branching column consisting of a pair of branching rods and forming an arm storage space with openings on both sides between the two branching rods is connected to the lower part of the lifting column supported on the machine frame, and a blowing pipe is attached to the lower end of the branching column. A lining device having a freely foldable blowing pipe, characterized in that a pipe support arm containing a built-in pipe is foldably attached, and a protective passage for a material hose, etc. is formed in each branching rod.