JPH07238759A - Ladder fixing device and boarding deck - Google Patents

Abstract

PURPOSE:To mount a ladder more simply and more safely by mounting slidingly the ladder to an upper section outside post by way of an arm and a holding metal fitting which are rotatively pivoted and pivoting a hand rail-equipped deck rotatively. CONSTITUTION:Prior to the installation of a ladder 5, which is accessible to the inside of a large-sized vessel such as a steel-made pan or a pit 1, the ladder is sliding and vertically mounted to two upper section outside posts 4 by way of a turnably pivoted arm 9 and a ladder holding metal fitting 11, and what is more, the ladder is mounted in such a fashion that its mounting angle may be adjustable. In addition, a boardable deck 14 provided with a hand rail 15 is turnably mounted to the posts 4. The arm 9 and the ladder holding metal fitting 11 are arranged to be removable easily by pulling out a shaft rod 6 and a holding rod 10. The ladder 5 is fixable without using a rope while the ladder, although in a set state, is arranged to change its vertical movement and its inclination angle. This construction makes it possible to simplify the mounting operation of the ladder.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention is to install a ladder from the top in a kiln furnace work such as repair and construction of steel making pots, molten steel pots, etc. and various containers and pits, and use the ladders to make containers and pits. The present invention relates to a ladder fixing device and a boarding deck in and out of work.

[0002]

2. Description of the Related Art Conventionally, when repairing a steel making pot or the like, a ladder was leaned against the pit edge and evenly stretched hemp ropes or the like on the left and right of the upper part of the ladder to bind it to the work floor. Also, when transferring to the ladder, he climbed to the top of the pit, grasped the ladder pillar with one hand, changed the body direction by 180 degrees, and put his foot on the ladder step.

[0003]

However, when a hemp rope or the like is used as a means for fixing the ladder to the pit or the like, it is troublesome that the tensions of the two hemp ropes on the left and right sides must be equalized. was there. In addition, the gap between the ladder and the upper edge of the pit was small, which was dangerous when transferring. Further, in the kiln work near the lower part of the ladder, there are often cases where the lower part of the ladder is moved, but each time it is necessary to replace hemp rope etc., it is very troublesome and the work efficiency is high. Will be reduced.

Further, there is a case in which the lower end of the ladder is set on a table lifter or the like, but the table lifter is used.
It is necessary to change the hemp rope etc. every time you move up and down.
This is also very troublesome. Furthermore, it was dangerous because the body had to change its direction by 180 degrees when transferring to the ladder.

The present invention has been made in view of the above points, and it is an object of the present invention to fix a ladder to a pit or the like easily without using hemp rope or the like. The space between the ladder and the ladder is secured near the top edge of the ladder, so that there is no danger when transferring, and the lower part of the ladder can be moved while the ladder is set with the ladder holding hardware. It is to provide a safe ladder fixing device and a boarding deck that allow the ladder to slide freely.

[0006]

In the ladder fixing device according to the present invention, two columns are erected at predetermined intervals on the outer peripheral edge of the upper portion of the container or pit, and are pivotally mounted on the upper portions of the columns. The shaft rod to be worn is provided laterally, the arms which are orthogonal to the shaft rod and protrude forward are fixedly provided at both ends of the shaft rod, and the support rods are provided laterally at the front ends of the arms. The upper part of the ladder is brought into contact with the support rod, and the upper part of the ladder is fixed by a ladder holding metal member slidably attached to the support rod.

Further, the ladder fixing device is provided with a shaft bolt and a bolt with a handle for fixing the ladder holding hardware at a desired angular position. Further, the ladder fixing device includes a tube member on which a ladder holding metal is slidably mounted on a support rod, a forwardly projecting flange provided on the outside of the tube member, and a lateral projection projecting from the inside of the front end of the flange. Is equipped with. The ladder fixing device and the boarding deck according to the present invention are provided with deck columns near the ladder fixing device at the upper outer peripheral edge of the container or pit at a predetermined interval, and one end side of the boarding deck is placed on the deck column upper part. It is rotatably and pivotally attached to a horizontally installed horizontal bar.

[0008]

[Action]

(1) Work procedure for setting the ladder Loosen the shaft rod pivotally attached to the upper part of the column, change the angle of the arm that rotates with the shaft rod, and change the angle of the arm and the upper end of the container or pit and the ladder. The horizontal distance is adjusted to several tens of cm and the shaft rod is fixed. The top of the ladder rests on the support rod. The ladder holding metal object slidably mounted on the support rod is loosened and slid to move to a position corresponding to the width of the ladder, and the ladder holding metal object is fixed at that position. When the angle of the ladder-holding hardware is incorrect, the ladder-holding hardware is fixed by loosening the ladder-holding hardware to correct the angle to hold the ladder.

(2) Ladder Removal Procedure The ladder holding hardware is loosened and slid on the support rod to release the ladder from the held state. Remove the upper part of the ladder that leaned against the support rod. If necessary, loosen the shaft rod and rotate the arm that rotates with the shaft rod so that it is located outside the container or pit, and fix it. Be out of the way.

(3) Work procedure for setting the boarding deck: Loosen one end side of the boarding deck that is pivotally attached to a horizontal bar laterally provided on the upper part of the deck pillar. Using the one end side of the boarding deck as a fulcrum, the deck is rotated from a position outside the container or pit to a position inside which is horizontal, and the deck is fixed at the horizontal position.

(4) Release of the boarding deck The one end side of the boarding deck rotatably pivotally attached to the horizontal bar provided above the deck pillar is loosened. Using the one end side of the boarding deck as a fulcrum, the deck is rotated so as to be located outside the horizontal position inside the container or pit, and the deck is fixed at a predetermined position.

[0012]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A case where a ladder is set in a ladle will be described below as an embodiment of the present invention with reference to the drawings. However, the present invention is not necessarily limited to this, and when a ladder is set in various containers or pits. Can also be applied. 1 is a side view of a ladder fixing device and a boarding deck, FIG. 2 is a front view of FIG. 1, FIG. 3 is a plan view of a ladder holding hardware, and FIG. 4 is a side view showing a state in which a ladder is set in a ladle. Reference numeral 1 denotes various containers and pits, and a ladle 1a is shown as an example of the containers and the pit 1. 2 is a table lifter installed on the inner bottom of the ladle 1a. Reference numeral 3 is a ring scaffold provided on the upper outer peripheral wall of the ladle 1a. Reference numeral 4 denotes two columns that are erected on the ring scaffold 3 at a predetermined interval. The distance between the two columns 4 is the ladder 5
The width of each ladder 5 is set wider than the width of each ladder 5, and a sufficient space corresponding to the width of each ladder 5 is provided.

A shaft rod 6 rotatably and pivotally attached to the upper portion of the column 4.
Is installed horizontally. As means for horizontally installing the shaft rod 6,
For example, a bearing 7 is provided on the top of each column 4, and the shaft rod 6 is pivotally supported by the bearing 7. Further, the bearing 7 is provided with a handle bolt 8 for rotating the shaft 6 or fixing the shaft 6 at a predetermined position. By attaching the bolt 8 with a handle, the bolt can be easily loosened or tightened, and the pivot 6 can be easily rotated and fixed. A ratchet (not shown) or other means may be used instead of the handle bolt 8.

Reference numeral 9 denotes both ends of the shaft rod 6 (positions inside the bearing 7).
The arm is fixed so as to project orthogonally to the shaft rod 6 and to the front. A support rod 10 is horizontally provided at the front end of the arm 9. A ladder holding hardware 11 is slidably mounted on the support rod 10. As shown in FIG. 3, the ladder holding hardware 11 is a pipe member 11a slidably mounted on a support rod 10.
And a deformable flange 11b provided outside the pipe member 11a and protruding forward, and a lateral projection 11c protruding from the inside of the front end portion of the flange 11b. The ladder holding hardware 11 is not limited to the above, and may be held by other means, for example, by spring elasticity or by loose fitting, as long as the ladder 5 can slide in the vertical direction without coming off or coming out. Good. The protrusion 11c is not directly applied to the ladder 5 as shown in FIG. 1, but is placed at a position slightly separated from the ladder 5,
The point is that the ladders 5 can be held by the left and right protrusions 11c so as not to come off. Further, handle bolts 8a and 8b are attached to the pipe member 11a so that the pipe member 11a can be slid along the support rod 10 to be fixed at a desired position or can be slid.

Numeral 12 is a deck support provided near the ladder fixing device at a predetermined interval on the ring scaffold 3 on the upper outer peripheral edge of the ladle 1a which is an example of the container and the pit 1, and in this example, two of them are provided. , One also serves as the support column 4, but may be provided separately. Reference numeral 13 is a horizontal bar horizontally provided above the deck support 12. However, in this example, one end of the horizontal bar 13 is fixed in the middle of the support column 4. One end of a boarding deck 14 with a handrail and an enclosure 15 is rotatably attached to a horizontal bar 13 provided above the deck column 12. In addition, one side of the boarding deck 14 is used so that the boarding deck 14 can be maintained horizontally inside the ladle 1a when in use, and can be kept tilted to the outside of the ladle 1a when not in use. A bolt 8c with a handle is attached to the rod so that it can be fixed on the horizontal bar 13.

Next, how to use the ladder fixing device and the boarding deck installed on the ladle 1a will be described. (1) Work procedure for setting the ladder Loosen the bolt 8 with a handle attached to the outside of the shaft rod 6 pivotally attached to the upper portion of the support column 4, and set the angle of the arm 9 that rotates together with the shaft rod 6 to an elevation angle. The horizontal distance between the upper end of the ladle 1a, which is an example of the container and the pit 1, and the ladder is 15 to 20 cm.
Then, the shaft rod 6 is fixed with a handle bolt 8. As shown in FIG. 1, the upper portion of the ladder 5 is aligned with one end side of the support rod 10 and leans on the support rod 10. In addition, ladder 5
The lower end of the table is placed on the table lifter-2 as shown in FIG. The ladder holding hardware 11 slidably mounted on the support rod 10 is loosened and slid. That is, one tube member 11a (the lower side of FIG. 3 in this example) that constitutes the ladder holding hardware 11 by loosening the handle bolt 8a has a width corresponding to the width of the ladder 5 from L ₁ to L ₂ along the support rod 10. The pipe member 11a is fixed by moving it to a position and tightening the handle bolt 8a at that position. If the ladder holding hardware 11 has an incorrect angle, the handle bolt 8
After loosening a and 8b and correcting the left and right flanges 11b forming the ladder holding hardware 11 to a desired angle, the bolt 8 with a handle
Tighten a and 8b. At this time, the protrusions 11c are slightly abutted from the ladder 5 without directly contacting the ladder 5 so that the ladder 5 can move up and down (see FIG. 1).

(2) Procedure for Removing Ladder Loosen the bolt 8a with a handle, slide the pipe member 11a constituting the ladder holding hardware 11 from L ₂ to L ₁ along the support rod, and the projection 11c separates from the ladder 5 The holding state of the ladder 5 is released. The ladder 5 leaning against the support rod 10 is removed. Loosen the left and right handle bolts 8 as necessary to remove the shaft rod 6
The arm 9 which rotates together with the ladle 1a is rotated toward the ring scaffold 3 located outside the ladle 1a to tighten the left and right handle bolts 8 so that the ladder fixing device does not interfere with the kiln furnace work or the like. To do so.

(3) Work procedure for setting the boarding deck After loosening the bolt 8c with handle, the boarding deck with the handrail and the enclosure 15 which are pivotally mounted on the horizontal bar 13 provided on the upper side of the deck column 12 so as to be rotatable. 14 is rotated from one position outside the ladle 1a (a) to a horizontal position inside the ladle 1a (a) by using one end side of the deck 14 as a fulcrum, and a bolt 8c with a handle is provided. Tighten.

(4) Release of boarding deck After loosening the handle bolt 8c, one side of the boarding deck 14 is used as a fulcrum to move the deck 14 from the horizontal state inside the ladle 1a (b). Outside 1a (a)
Rotate to the position and tighten the handle bolt 8c.

[0020]

As can be seen from the above description, the present invention has two support columns standing upright on the outer peripheral edge of the upper part of a container or pit and pivotally mounted on the top of the support columns. A shaft rod is provided horizontally, and at both ends of the shaft rod, an arm orthogonal to the shaft rod and projecting forward is fixedly provided, and at the front end portions of the both arms, support rods are provided horizontally. Since it is a ladder fixing device in which the upper part of the ladder is abutted against and the upper part of the ladder is fixed by a ladder holding hardware that is slidably attached to the support rod, when fixing the ladder in a pit, etc. Anyone can easily and quickly attach / detach the ladder without using any rope, etc., and it can be secured securely, and at the same time, it is possible to secure a space with the ladder near the upper edge of the pit, etc. and transfer to the ladder. There is no danger of time, you can move the ladder up and down with the ladder holding hardware set, Child holding the hardware ladder can be slid. More specifically, by adjusting the angle of the arm, the horizontal distance between the upper end of the container or pit and the ladder can be secured to be several tens of cm, which is safe.

Further, since the ladder fixing device is provided with the shaft rod and the bolt with a handle for fixing the ladder holding metal object at a desired angular position, the angle adjustment work of the ladder holding metal object can be easily performed. Further, the ladder holding hardware is provided with a pipe member slidably mounted on a support rod, a forwardly protruding flange provided on the outside of the pipe member, and a lateral protrusion protruding from the inside of the front end portion of the flange. The ladder fixing device allows the lower part of the ladder to be moved while the ladder is set by providing a clearance between the ladder and the projection, and the ladder is attached to the table lifter.
There is a case to move the lower part of the ladder when working on the lower part of the ladder when carrying it on the work, etc., but it is not necessary to change the hemp rope etc. each time as in the conventional case, and the ladder is attached to the tape.
Elevating work of bull lifter etc. becomes easy. In addition, the ladder can be freely slid between the left and right flanges protruding forward, and various ladders with different widths can be dealt with.

Further, deck props are provided near the ladder fixing device at the outer peripheral edge of the upper part of the container or pit at predetermined intervals, and one end side of the boarding deck is turned to a horizontal bar provided above the deck props. Since the ladder fixing device and the boarding deck are rotatably pivotally mounted, the danger of an operator transferring to the ladder can be largely eliminated by the combination of the ladder fixing device and the boarding deck.

[Brief description of drawings]

FIG. 1 is a side view of a ladder fixing device and a boarding deck.

FIG. 2 is a front view of FIG.

FIG. 3 is a plan view of a ladder holding metal object.

FIG. 4 is a side view showing a state in which a ladder is set in a ladle.

[Explanation of symbols]

 1 Containers and Pits 1a Ladle 2 Table Lifter 3 Ring Scaffold 4 Struts 5 Ladder 6 Axis Rod 7 Bearings 8, 8a, 8b, 8c Handle Bolt 9 Arm 10 Support Rod 11 Ladder Holding Hardware 11a Pipe Member 11b Flange 11c Protrusion 12 Deck support 13 Horizontal bar 14 Boarding deck 15 Training and enclosure

 ─────────────────────────────────────────────────── ─── Continuation of front page (72) Takashi Inoue Takashi Inoue 1 Kimitsu, Kimitsu-shi, Chiba Nippon Steel Corp. Kimitsu Works Kurosaki Reactor Co., Ltd. Kimitsu Works (72) Inventor Tadashi Hayashi Tadashi 1 Kimitsu, Kimitsu-shi, Chiba Nippon Steel Co., Ltd. Kimitsu Works Co., Ltd. Kurosaki Furnace Industry Co., Ltd. Kimitsu Works

Claims (4)

[Claims] 1. A column or a pit is provided with two columns upright at an outer peripheral edge thereof at a predetermined interval, and a shaft rod pivotally rotatably attached to the upper part of the column is provided horizontally. Arms that are orthogonal to the shaft rod and project forward are fixedly provided at both ends, support rods are provided laterally at the front ends of the two arms, and the upper portion of the ladder is abutted on the support rods and the support is provided. A ladder fixing device characterized in that the upper part of the ladder is fixed by a ladder holding hardware that is slidably attached to a rod. 2. The ladder fixing device according to claim 1, further comprising a bolt with a handle for fixing the shaft rod and the ladder holding metal object at a desired angular position. 3. The ladder holding hardware includes a pipe member slidably mounted on a support rod, a forwardly projecting flange provided outside the pipe member, and a lateral projection projecting from the inside of the front end of the flange. 3. The method according to claim 1, further comprising:
Or the ladder fixing device described in 2. 4. A deck support is provided near the ladder fixing device according to claim 1, 2 or 3 at a predetermined interval on an upper outer peripheral edge of a container or a pit, and one end side of a boarding deck is provided at the deck. A ladder fixing device and a boarding deck, which are pivotally attached to a horizontal bar horizontally provided on the upper part of a pillar.