JP2018197062A - Falling preventing tool and position adjustment method of the same - Google Patents

Abstract

To enable position adjustment of a falling preventing tool of a dolly for transporting large diameter steel pipes to be easily performed on the ground.SOLUTION: A falling prevention tool 4 prevents falling of loaded objects (steel pipes) on a dolly and has: a body part 11 disposed on the dolly; and a handling member 12 which is detachably attached to the body part 11 and adjusts a position of the body part 11 from the outer side of the dolly 1. The body part 11 includes a roller 13 and a handling member attachment part 14. The handling member 12 is attached to the handling member attachment part 14. When the handling member 12 is operated to incline the body part 11, the roller 13 becomes rollable to enable a position of the body part 11 to move in a desired direction.SELECTED DRAWING: Figure 7

Description

  The present invention relates to a fall prevention tool for a carriage for transporting large-diameter steel pipes such as spiral steel pipes, UO steel pipes, and BR steel pipes, and a method for adjusting the position of the fall prevention tool.

  For example, large-diameter steel pipes such as spiral steel pipes and UO steel pipes described in Patent Literature 1 and Patent Literature 2 are produced in a factory, and then loaded on a carriage, and a painting process or a processing process for attaching accessories. The steel pipes are transported to each processing plant or storage location in the factory where a joining process for joining steel pipes is performed.

  Generally, when an article is loaded and transported on a carriage, a fall prevention tool for preventing the load from falling is provided. When transporting a steel pipe on a carriage, it is necessary to adjust the position of the fall prevention device according to the diameter of the steel pipe to be transported in order to prevent the steel pipe from falling from the carriage or moving on the carriage. . Therefore, the fall prevention device is usually semi-fixed. Conventionally, the position adjustment work of the fall prevention device is carried out by an operator who moves up on a cart with a height of 1.5 m or more, removes a fixing tool such as a pin, moves the position of the fall prevention device, and again. After attaching the fixture, the procedure was to descend from the carriage. For this reason, it was very troublesome to go up and down to the carriage, but there was no means for adjusting the position of the fall preventer during work on the ground.

JP 09-295138 A JP 2001-115238 A

  This invention is made in view of this point, and it aims at enabling position adjustment of the fall prevention tool of the trolley | bogie for conveyance of a large diameter steel pipe to be performed by a simple operation | work on the ground.

  In order to solve the above problem, the present invention is a fall prevention device for preventing a load on a carriage from dropping, and a main body disposed on the carriage, and is detachable from the main body. A handling member that adjusts the position from the outside of the carriage, and the main body portion includes a roller and a handling member attaching portion, the handling member is attached to the handling member attaching portion, and the handling member is operated to operate the handling member. When the main body is tilted, the roller can roll, and the position of the main body can be moved in a desired direction.

  In the fall prevention tool, the main body is installed on a mounting table for mounting the load, and the mounting table is provided with through holes for inserting positioning fixing pins at a plurality of positions in the longitudinal direction. The body portion is provided with a pin hole at a position overlapping the through hole, the roller is rolled to adjust the position of the body portion, and the fixing pin is inserted by aligning the through hole and the pin hole. By doing so, the position of the main body may be fixed.

  Moreover, the stopper which restrict | limits the movement range of the said main-body part may be provided in the edge part of the said mounting base.

  The handling member has a rod shape, the handling member mounting portion has a cylindrical shape having a hollow portion, and a distal end portion of the handling member has a thickness that can be inserted into the hollow portion, and a proximal end side of the handling member May be thicker than the hollow portion. Further, a retaining member that protrudes in a direction perpendicular to the longitudinal direction of the distal end portion is provided at the distal end of the handling member, and the length of the handling member attaching portion is the length of the distal end portion of the handling member. Further, an opening through which the retaining member can pass when the tip is inserted into the hollow portion may be formed over the entire length in the longitudinal direction.

  A cushioning material may be provided on the side of the main body that contacts the load. The load may be a steel pipe of 400φ to 2500φ.

  Further, the present invention is a method for adjusting the position of a fall prevention tool that prevents the load on the carriage from falling, wherein the fall prevention tool is detachably attached to the main body section disposed on the carriage. A handling member, and the main body portion includes a roller and a handling member attaching portion, the handling member is attached to the handling member attaching portion, and the handling member is operated from the outside of the carriage to operate the main body portion. After tilting, a method for adjusting the position of the fall prevention device is provided, wherein the roller is rolled to move the main body in a desired direction.

  According to the present invention, the position of the fall prevention tool can be adjusted according to the diameter of the steel pipe to be loaded by simple ground work without going up on the carriage.

It is a figure which shows the state which loaded the steel pipe on the trolley | bogie provided with the fall prevention tool concerning embodiment of this invention. It is a side view which shows the state in which the position of the fall prevention tool shown in FIG. 1 is being fixed. It is sectional drawing seen from the AA line of FIG. It is a perspective view of the main-body part of the fall prevention tool shown in FIG. It is a figure explaining the attachment method of a handling member. It is a figure which shows the example of embodiment from which a handling member attaching part differs. It is a side view explaining the position adjustment method of the fall prevention tool shown in FIG.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings. In the present specification and drawings, elements having substantially the same functional configuration are denoted by the same reference numerals, and redundant description is omitted.

  FIG. 1 is a view showing a state in which a steel pipe 2 such as a large diameter spiral steel pipe, UO steel pipe, BR (bending roll) steel pipe or the like having a diameter of about 400φ to 2500φ is loaded on a carriage 1 for transportation. A plurality of steel pipes 2 are stacked side by side on a mounting table 3 installed on the carriage 1, and the steel pipe 2 is prevented from dropping from the carriage 1 or moving on the carriage 1 at both ends in the width direction of the carriage 1. A fall prevention tool 4 is provided. The fall prevention device 4 is disposed at a plurality of locations with appropriate intervals in the longitudinal direction of the steel pipe 2 (direction perpendicular to the paper surface of FIG. 1). The dimension in the width direction of the carriage 1 on which the large-diameter steel pipe is loaded is, for example, about 3.5 m.

  2 and 3 are views for explaining the fall prevention tool 4 according to the embodiment of the present invention. FIG. 2 is a side view showing a state in which the position of the fall prevention tool 4 is fixed. FIG. It is sectional drawing seen from the AA line.

  On the carriage 1 that transports the steel pipe 2 as a load, a placing table 3 is installed with the width direction of the carriage 1 as a longitudinal direction as shown in FIG. The mounting tables 3 are provided at appropriate intervals in the traveling direction of the carriage 1, that is, in the longitudinal direction of the steel pipe 2 to be loaded. The mounting table 3 is formed, for example, by attaching a wooden sleeper 6 to the upper surface side of the H-shaped steel 5. The fall prevention tool 4 according to the present embodiment is attached to both ends of the mounting table 3.

  The fall prevention tool 4 includes a main body part 11 and a handling member 12 that is detachably attached to the main body part 11. The main body portion 11 is provided with a roller 13 and a handling member attachment portion 14. Hereinafter, the structure of the main body part 11 will be described with the side facing the steel pipe 2 of the main body part 11 of the fall prevention tool 4 as the front surface and the end side of the mounting table 3 as the back surface.

  FIG. 4 is a perspective view of the main body 11. The main body 11 has a back plate 21 with a roller 13 attached to the lower part on the back side, and a bottom plate 22 extending from the lower end of the back plate 21 to the front side in a direction perpendicular to the front side. As shown in FIG. 2, the bottom plate 22 is entirely in contact with the mounting table 3 when the main body 11 is not tilted. In this state, the roller 13 is slightly lifted from the mounting table 3. When the main body 11 is tilted by an operation of the handling member 12 described later, the roller 13 comes into contact with the mounting table 3 and can roll. The diameter of the roller 13 is, for example, about 50φ, and is determined according to the weight of the main body 11 or the like.

  Further, the main body 11 has side plates 23 from both sides of the back plate 21 toward the front side. The cushioning material 7 such as wooden is fitted between the side plates 23 and 23 on both sides so that the front side of the upper portion of the side plate 23 does not directly touch the steel pipe 2 that is the load (FIG. 1, (See FIG. 2). The lower portions of the side plates 23 and 23 on both sides are installed so as to sandwich both sides of the mounting table 3 as shown in FIG. 3, and the side plates 23 and 23 have a symmetrical configuration. A handling member attaching portion 14 is attached to the outer surface of the side plate 23. As the handling member attaching portion 14, a member having a hollow portion, such as a square steel pipe or a lip groove steel, is used and attached to the side plate 23 by welding or the like. Furthermore, a pin hole 24 is provided below the side plate 23 so as to overlap with a plurality of through holes 31 provided in the H-section steel 5 of the mounting table 3. By aligning the positions of the through hole 31 and the pin hole 24 and inserting the fixing pin 32 therein, the position of the main body 11 is fixed. For example, the H-shaped steel 5 is provided with through holes 31 at intervals of 100 mm in the longitudinal direction. On the other hand, the side plate 23 of the main body 11 is provided with two pin holes 24 and 24 at intervals of 200 mm, for example. ing. The back plate 21, the bottom plate 22, and the side plates 23 of the main body 11 are formed of an iron plate or the like.

  As shown in FIG. 2, the handling member 12 according to the present embodiment is a rod-shaped member, and may be either a hollow or a round bar. The front end portion 12 a of the handling member 12 is a portion that is inserted into the handling member attachment portion 14, is thick enough to be inserted into the hollow portion 14 a of the handling member attachment portion 14, and is longer than the handling member attachment portion 14. The dimensions are a little long. The base end portion 12b of the handling member 12 is thicker than the hollow portion 14a. Thereby, at the time of work, it can be easily determined that the handling member 12 has been inserted to the required range.

  In the present embodiment, a retaining member 15 that protrudes in a direction orthogonal to the longitudinal direction of the distal end portion 12 a is provided at the distal end of the handling member 12. As shown in FIG. 5, the handling member mounting portion 14 is formed with an opening 14b over the entire length so that the retaining member 15 can pass when the distal end portion 12a of the handling member 12 is inserted into the hollow portion 14a. Has been. When attaching the handling member 12, the retaining member 15 is aligned with the position of the opening 14 b, and the distal end portion 12 a is inserted into the hollow portion 14 a, and is inserted until the retaining member 15 comes out ahead of the handling member attaching portion 14. After that, by rotating the handling member 12 around the central axis of the tip end portion 12a, the retaining member 15 moves as shown by the arrow in FIG. 5, and there is no opening 14b on the front surface of the handling member mounting portion 14. It is locked to. As a result, the handling member 12 is prevented from coming out backward (toward the operator). The handling member mounting portion 14 may be formed by cutting out a part of a square steel pipe as shown in FIG. 5 to form the opening 14b, or by combining two members as shown in FIG. 6 (a). 14b may be used, or a lip groove steel may be used as shown in FIG. 6 (b).

  Further, a flange 16 is provided near the proximal end of the handling member 12 in consideration of operability. The length of the handling member 12 is determined in consideration of the fact that the main body 11 can be easily tilted by human power based on the principle of the lever, and that the handling member 12 itself does not become too heavy, for example, about 1100 mm. The handling member 12 is stored in a storage place or the like provided in the carriage 1 except during work.

  A stopper 33 that restricts the range of movement of the main body 11 is provided at the end of the mounting table 3. For example, as shown in FIG. 2, the stopper 33 is provided on the side surface in the vicinity of the end of the mounting table 3, and protrudes outward in the width direction. And when the back surface side of the side plate 23 of the main body part 11 hits the stopper 33, the main body part 11 does not move to the outer side. Furthermore, a roller stopper 34 at a position higher than the upper surface of the mounting table 3 may be provided at the end of the mounting table 3.

  Next, an operation procedure when adjusting the position of the fall prevention tool 4 will be described.

  First, the handling member 12 is taken out from the storage location, and the distal end portion 12 a of the handling member 12 is inserted into the handling member mounting portion 14 of the fall prevention tool 4 from the outside of the carriage 1. By pushing until the handling member 12 does not enter any more, only the necessary length is inserted. Thereafter, the handling member 12 is rotated until the retaining member 15 is directed upward, for example, without the opening 14b.

  Next, the fixing pin 32 that fixes the position of the main body 11 is removed. Thereafter, when the base end side of the handling member 12 is operated downward, as shown in FIG. 7, the main body portion 11 is tilted with the lower end of the back plate 21 of the main body portion 11 as a fulcrum, and the roller 13 contacts the mounting table 3. And the roller 13 is rolled in the state in which the main-body part 11 was mounted on the roller 13, and the main-body part 11 is moved to the desired position of the front-back direction. At the position where the through hole 31 of the mounting table 3 and the pin hole 24 of the main body 11 coincide with each other, the base end side of the handling member 12 is returned upward, and the front side of the main body 11 that has been lifted is lowered onto the mounting table 3. .

  Then, the fixing pin 32 is inserted again to fix the position of the main body 11, and the handling member 12 is removed in the reverse procedure to that for attachment and stored in a predetermined storage location, and the operation is completed. In addition, when the fixing position of the main-body part 11 has left | separated from the side of the trolley | bogie 1, you may fix only the near side where the hand of a ground worker reaches among the pin holes 24 of two places.

  As described above, according to the present invention, the position of the fall prevention device 4 can be adjusted by a simple work from the ground without the worker climbing on the carriage 1, and the physical burden on the worker is reduced. Can be reduced. In consideration of the possibility that an operator may collide with the end of the mounting table 3, protective plates 35 made of wood, resin, or the like may be provided on both end surfaces of the mounting table 3.

  As mentioned above, although preferred embodiment of this invention was described, this invention is not limited to this example. It is obvious for those skilled in the art that various changes or modifications can be conceived within the scope of the technical idea described in the claims. It is understood that it belongs to.

  The present invention is applicable to a carriage for transporting large-diameter steel pipes in a steel factory, a carriage for transporting sheet piles other than large-diameter steel pipes, and a fall prevention device that adjusts the position according to the load on a general trailer. it can.

DESCRIPTION OF SYMBOLS 1 Carriage 2 Steel pipe 3 Mounting stand 4 Fall prevention tool 5 H-section steel 6 Sleeper 7 Buffer material 11 Main body part 12 Handling member 12a Tip part 12b Base end part 13 Roller 14 Handling member attachment part 14a Hollow part 14b Opening part 15 Retaining member 24 Pin hole 31 Through hole 32 Fixed pin 33 Stopper

Claims (8)

A fall prevention tool that prevents the load on the carriage from falling,
A main body disposed on the carriage, and a handling member that is detachable from the main body and adjusts the position of the main body from the outside of the carriage,
The main body includes a roller and a handling member mounting portion,
When the handling member is attached to the handling member attaching portion and the handling member is operated to tilt the main body, the roller can roll, and the position of the main body can move in a desired direction. , Fall prevention equipment. The main body is installed on a mounting table for mounting the load, and the mounting table is provided with through holes for inserting positioning fixing pins at a plurality of positions in the longitudinal direction.
The body part is provided with a pin hole at a position overlapping the through hole, the roller is rolled to adjust the position of the body part, and the fixing pin is inserted by aligning the through hole and the pin hole. The position of the said main-body part is fixed by doing, The fall prevention tool of Claim 1 characterized by the above-mentioned.   The fall prevention tool according to claim 2, wherein a stopper for limiting a movement range of the main body is provided at an end of the mounting table. The handling member is rod-shaped, and the handling member mounting part is a cylinder having a hollow part,
The distal end portion of the handling member is thick enough to be inserted into the hollow portion, and the proximal end portion of the handling member is thicker than the hollow portion. Fall prevention tool as described in the paragraph. At the tip of the handling member, a retaining member that protrudes in a direction perpendicular to the longitudinal direction of the tip is provided,
The handling member mounting portion has a length in the longitudinal direction shorter than the length of the distal end portion of the handling member, and an opening through which the retaining member can pass when the distal end portion is inserted into the hollow portion. The fall prevention tool according to claim 4, wherein the fall prevention tool is formed over the entire length.   The fall prevention tool according to any one of claims 1 to 5, wherein a cushioning material is provided on a side of the main body that comes into contact with the load.   The fall prevention tool according to any one of claims 1 to 6, wherein the load is a steel pipe of 400φ to 2500φ. A method for adjusting the position of a fall prevention device that prevents the load on the carriage from falling,
The fall prevention device has a main body portion disposed on the carriage, and a handling member that can be attached to and detached from the main body portion, and the main body portion includes a roller and a handling member attaching portion,
The handling member is attached to the handling member attaching portion, the handling member is operated from the outside of the carriage and the main body portion is tilted, and then the roller is rolled to move the main body portion in a desired direction. A method of adjusting the position of the fall prevention device, characterized by the above.

Images