JP2008031524A - Apparatus for lance-hanging work, and method of hanging lance using the same - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an apparatus for supporting a lance when the lance is hung with a crane or the like, which is suitable for hanging a long lance in a narrow space, and to provide a method of hanging the lance while using the apparatus. <P>SOLUTION: This apparatus for lance-hanging work comprises: a travel cart 2 which moves on a track 10; and a lance-supporting means 3 which is movably installed on the travel cart. The travel cart comprises: a driving means 11 for moving the travel cart on the track; a lift-preventing means 12 for preventing the travel cart from being lifted from the track; and a driving means 7 for moving the lance-supporting means. The lance-supporting means can move orthogonally to a direction in which the travel cart travels. The lance-hanging method comprises the steps of: arranging the apparatus 1 for a lance-hanging work on the track laid in an approximately orthogonal direction to the lance-hanging direction; and moving the position of the lance-hanging apparatus, at which the head of the lance will be placed, according to the quantity by which the lance head will be hung up. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to a device for supporting a lance when it is suspended by a crane or the like, and a method for suspending a lance using the device, and relates to a device suitable for suspending a long lance in a narrow space. .

  The coke oven is maintained and inspected by inserting a lance from the furnace kiln. When repairing the furnace wall in the carbonization chamber, a thermal spraying device is attached to the tip, and when observing the furnace wall, an imaging device or non-contact type is attached to the tip. A distance meter or the like is attached (for example, Patent Document 1 and Patent Document 2).

  Since the lance used for these operations is a steel pipe, it is difficult for an operator to manually operate a large coke oven, and several proposals have been made.

  Patent Document 3 relates to a work table lifting device that prevents the work table to which a thermal spray lance or the like is attached from being shaken and toppled over, and sandwiches a flange of a coke oven backstay at the tip of a telescopic rod for inserting the lance into the furnace. A mechanism is disclosed in which a roller is attached and the work table is stabilized during work.

Patent Document 4 is a lance turning work cart that was developed because the platform lifting and lowering device described in Patent Document 3 is a large-sized automation device that is difficult to use in a weak work path. A rotating platform is installed on the traveling cart. A pipe mechanism including a pantograph type lance lifting device provided with a support member for supporting the lance on the top of the rotary table is disclosed.
JP 2005-330385 A Japanese Patent No. 3336192 JP-A-8-270206 JP 2005-24234 A

  By the way, the oxygen lance used in the top blowing oxygenator of the vacuum degassing equipment and the lance used for blowing oxygen in the pure oxygen converter work are about 15 to 20 m long and are attached to the head. The hanging part is hung with a crane etc.

  When the work space is large, the long lance can be tilted and monitored by monitoring the movement of the head suspended by a crane, etc. The tip movement must also be monitored. In order to improve work efficiency, it is effective to keep the trajectory drawn by the head and tip for each work constant. However, Patent Documents 1 to 4 are intended for short lances, and long lances. There is no description about the ups and downs work.

  Accordingly, the present invention provides a lance hanging work apparatus that enables the trajectory drawn by the head and the rear tip of the lance to be drawn in the same manner for each work in raising and lowering the long lance (hanging). It is another object of the present invention to provide a lance hanging work method using the apparatus.

The object of the present invention can be achieved by the following means.
1. A traveling carriage that moves on the track, and a lance support means that is movably provided on the traveling carriage, the traveling carriage prevents the lift from the track and the driving means for moving on the track An apparatus for suspending a lance, characterized in that the lance support means is movable in the longitudinal direction of the traveling carriage.
2. A lance suspending work method in which a lance head is suspended by a crane, and the lance suspending work device according to 1 is provided on a track laid in a direction substantially perpendicular to the lance suspending direction. A lance hanging work method comprising: arranging and moving a position of a tip portion of the lance in the lance hanging work device according to a lifting amount of the lance head.
3. A lance hanging work method in which the lance hanging work device described in 1 is placed on a track laid in a direction substantially perpendicular to the lance hanging direction, and the lance head is hung by a crane and the work is turned upside down. Then, the suspension work is performed in advance so that the building and the lance do not come into contact with each other, and the movement amount of the lance support base on the traveling carriage for each of the following processes is obtained. A lance hanging work method, wherein the lance head is lifted by an overhead crane so that the amount of movement of the table becomes the amount of movement.
1. 1. The process of lifting the lance head at the hook position. The process of lifting the lance head while moving the lance tip at the lance lifting limit line, where the lance tip refers to the spout at the time of converter blowing, and the lance head refers to the end surface opposite to the lance tip.

  According to the present invention, in the lifting work in the work of raising and lowering the long lance, the trajectory drawn by the head and tip of the long lance is determined, and the same trajectory is drawn for each work. If the conditions not to be obtained are obtained, the work efficiency is improved, which is extremely useful in industry.

Hereinafter, the present invention will be described in detail with reference to the drawings.
FIG. 1 is a schematic diagram for explaining the configuration of a lance hanging work apparatus according to an embodiment of the present invention. In the figure, 1 is a lance hanging work apparatus, 2 is a traveling carriage, 2 a is a traveling carriage 2. The tip portion, 3 is a lance support base that is a lance support means, 4 and 5 are gears, 6 is a roller chain with an attachment, 7 is a drive device for a lance support base that rotates the gear 5, and 8 is a traveling carriage 2 on the track. A driving device for traveling, 9 is a shift device for supporting the lance, 10 is a track, 11 is a wheel of the traveling carriage 2, and 12 is a lifting prevention means for preventing the lifting of the traveling carriage 2 from the track 10. 73, a roller chain for transmitting the driving force of the driving device 7 to the gear 5, 13 a lance, 13a a lance head, 14 a hook for hanging a crane hook, etc. Members, 31 and 32 road wheels of the lance support base 3, 34 denotes a fixing member for fixing the lance 13 into the lance support table 3.

  2 is a top view of the apparatus 1 for suspending the lance shown in FIG. 1. In FIG. 2, 15 is a gear for transmitting the driving force of the lance support base driving apparatus 7 to the gear 5, and 16 is from the driving apparatus 8 for traveling. The shafts 21 and 22 for transmitting the driving force to the traveling wheel 10 are long members that form the sides of the traveling carriage 2.

  The lance hanging work apparatus 1 according to the present invention includes a traveling carriage 2 that moves on a track 10 and a lance support base 3 that moves within the traveling carriage 2. The traveling vehicle 2 has a basic frame structure in which long members 21 and 22 having a U-shaped cross section are arranged in parallel with the open portions thereof being overlapped, and the long members 21 and 22 are longer than the lance 13. To do.

  The distal end portions of the long members 21 and 22 have a foldable structure to prevent contact between the distal end portion 2a of the traveling carriage 2 and the building or the like in a narrow work space. Further, a shift device 9 that supports the intermediate portion in the length direction of the lance 13 and shifts the lance 13 is suspended over the long members 21 and 22 when suspended. The shift device 9 has a structure in which a roll is attached to the upper end portion so that the lance 13 can move back and forth.

  The traveling carriage 2 includes a traveling wheel 11 and a lifting prevention member 12 that prevents the traveling wheel 11 from being lifted off the track 10 when the center of gravity is moved due to suspension of the lance or the like, and the wheel is removed. The lifting prevention member 12 has, for example, an L-shaped cross-sectional shape in which the tip portion enters a concave portion in the cross-sectional shape of the track 10.

  A plurality of traveling wheels 11 are arranged in the longitudinal direction of the traveling carriage 2 at substantially equal intervals, and the driving force of the traveling drive device 8 is transmitted by the shaft 16 to rotate.

  FIG. 3 is a diagram for explaining the configuration of the traveling drive system of the lance hanging work apparatus 1 and shows a side view of the long members 21 and 22 from a direction perpendicular to the member axis. The driving force generated by manually rotating the traveling manual handle 81 of the traveling drive device 8 is transmitted to the traveling wheel 11 attached to the shaft driven by the gear 82 and the roller chain 83.

  The traveling wheel 11 and the lifting prevention member 12 are disposed before and after the traveling direction of the traveling carriage 2 and are attached below the long members 21 and 22. A traveling system having a structure in which the lifting prevention member 12 also serves as a bearing for the traveling wheel 11 is preferable because it has a simple structure.

  The traveling carriage 2 includes a lance support base 3 on which a lance 13 is mounted. The lance support base 3 is wound around gears 4 and 5 attached to front and rear ends of the long members 21 and 22 of the traveling carriage 2. It is attached to an attachment (not shown) of a roller chain 6 with a strip attachment. The gears 4 and 5 are attached so that the roller chain 6 with attachments can rotate along the member axes of the long members 21 and 22.

  Traveling wheels 31 and 32 are attached to the lance support base 3 so as to be in contact with the inside of the U-shapes of the long members 21 and 22. By setting it as the above structure, the lance support stand 3 moves on the traveling trolley 2 along the member axis | shaft of the elongate members 21 and 22 with rotation of the roller chain 6 with an attachment.

  The roller chain 6 with attachments is rotated by the driving force transmitted from the driving device 7 to the gear 15 through the gear 72 and the roller chain 73.

  FIG. 4 is a diagram for explaining the configuration of the drive system of the lance support table 3. The drive force generated by manually rotating the forward / reverse manual handle 71 of the drive device 7 for the lance support table is a drive gear 72 and a roller chain 73. Is transmitted to the drive gear 15 (not shown) of the roller chain 6 with attachment. The gear shaft 17 that connects the driving gear 15 and the gear 5 is coaxial with the gear shafts of the left and right gears 5.

  It is preferable that a worm speed reducer is incorporated in the lance support base drive device 7 so that the operator can easily operate the forward / reverse manual handle 71 while observing the position of the lance support base 3.

  When the lance 13 is placed on the traveling carriage 2, the tip portion is placed on the lance support base 3, and then fixed to the lance support base 3 by the fixture 34. An intermediate portion in the longitudinal direction of the lance 13 is supported by the shift device 9 so as to be able to move forward and backward. The fixture 34 is structured to be detachably attached to the lance support 3 and is removed when the lance 13 is suspended.

  Next, a case where a long lance is suspended by the lance hanging method according to the present invention will be described with reference to FIG. The description will be given for the case where the lance 13 is suspended by an overhead crane (not shown) in the internal space 18b in the internal spaces 18a, 18b of the building 18.

  The ceiling height of the internal space 18a is lower than the internal space 18b, and the height of the internal space 18b is the height from the laying surface f on which the track 10 is laid to the ceiling. The total length of the lance 13 is approximately equal to the height of the internal space 18b.

  The track 10 is not particularly defined in the present invention as long as the lance 13 is lifted so that the lance support 3 can be smoothly moved on the traveling carriage 2, but is laid in a direction substantially perpendicular to the lifting direction. It is desirable that the movement of the lance 13 is not complicated during the lifting operation.

  First, the tip end portion of the lance 13 having the hook member 14 attached to the head portion 13a is placed on the lance support base 3 (not shown) on the traveling carriage 2 of the lance hanging work apparatus 1.

  A lance support base (not shown) 3 is moved on the traveling carriage 2 to advance the lance head 13a to the hooking position d1 (arrow a). After attaching the hook to the hook member 14, at the same position, the hook is wound up with an overhead crane (not shown) until the lance head 13a reaches the allowable height h1 of the internal space 18a (arrow b).

  Next, the lance head 13a is moved up to the suspension limit point d2 of the overhead crane (not shown) in the internal space 18b by moving the lance support base 3 (not shown) on the traveling carriage 2 while being rolled up. (Arrow c), and further lifted to the lifting limit height h2 (arrow d). At this time, the tip of the lance 13 is separated from the traveling carriage 2.

  Finally, the lance head 13a is moved by an overhead crane (not shown) to a predetermined hanging position d1, the same position as the hooking position d1 in this description (arrow e). In the series of operations described above, the lifting amount and the moving amount of the lance support table in the operation of lifting the lance head 13a with the overhead crane are recorded, and the moving amount of the lance support table in the next lifting operation of the lance. The overhead crane is operated so that is the amount of movement.

  In the lance hanging method according to the present invention, the lifting operation is performed in advance so that the building and the lance do not come into contact with each other, and the amount of movement of the lance supporting table on the traveling carriage is obtained. By setting the amount of movement to the amount of movement, the locus of the head and tip of the lance is reproduced, and the work efficiency is improved. Also, when pulling the lance, it can be done in the reverse order of the trigger.

Example of the present invention Top view of the example of the present invention shown in FIG. Example of the present invention Example of the present invention The figure explaining the movement of the lance head in the lifting operation | work of the lance using the example of this invention shown in FIG.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Lance suspension work apparatus 2 Traveling carriage 2a Tip part 3 Lance support stand 4, 5 Gear 6 Roller chain with attachment 7 Lance support stand drive device 8 Travel drive device 9 Shift device 10 Track 11 Wheel 12 Lift prevention member 13 Lance 13a Lance head 14 Hook member 15 Drive gear 16 Shaft 17 Gear shaft 18 Building 18a, 18b Inner space 31, 32 Traveling wheel 34 Fixture 21, 22 Long member 71 Forward / reverse manual handle 72, 82 Drive Gear 73, 83 Roller chain 81 Traveling manual handle

Claims (3)

  A traveling carriage that moves on the track, and a lance support means that is movably provided on the traveling carriage, the traveling carriage prevents the lift from the track and the driving means for moving on the track An apparatus for suspending a lance, characterized in that the lance support means is movable in the longitudinal direction of the traveling carriage.   A lance suspending work method in which a lance head is suspended by a crane, and the lance is suspended on a track laid in a direction substantially perpendicular to the lance suspending direction. A lance hanging work method, characterized in that a device is arranged and a position of a tip portion of the lance in the lance hanging work device is moved according to a lifting amount of the lance head. A lance hanging work in which the lance hanging work device according to claim 1 is arranged on a track laid in a direction substantially perpendicular to the lance hanging direction, and the lance head is hung by a crane to perform a tilting work. In this method, the suspension work is performed in advance so that the building and the lance do not come into contact with each other, and the amount of movement of the lance support base on the traveling carriage for each of the following processes is obtained. A lance hanging work method, wherein the lance head is lifted by an overhead crane so that the amount of movement of the lance support is equal to the amount of movement.
1. 1. The process of lifting the lance head at the hook position. Lifting the lance head while moving the tip of the lance at the lance lifting limit line

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