JP5594678B2 - Scaffolding material for storage tank - Google Patents

Description

  The present invention relates to a storage tank scaffolding member that is improved in safety and convenience with respect to a temporary bracket structure scaffold used for new construction or repair work of a storage tank.

  Temporary working scaffolds are installed near the side plates when constructing new storage tanks and repairing work. This temporary work scaffold is generally a frame scaffold that is assembled using pipes, plates, etc., but a receiving member that is attached directly to the wall of the side plate, that is, a bracket, is used inside or outside the storage tank. The temporary bracket structure scaffolding that was used is used.

6 to 8 show an example in which the scaffold 5 having a temporary bracket structure is directly attached to the inner wall surface of the side plate 3 of the flat bottom cylindrical upright storage tank 1.
A large storage tank 1 for storing crude oil and other volatile and flammable liquids is composed of a circular flat plate 2, a cylindrical side plate 3, and a roof 4.
When a new construction or repair work of the storage tank 1 is performed, a temporary bracket structure scaffold 5 is directly attached to the wall surface of the side plate 3.
Reference numeral 6 denotes a shelf-like bracket, and 7 denotes an attachment member that is welded and fixed to the side plate 3 in order to attach the bracket 6 to the side plate 3. A scaffolding plate 8 is placed and fixed on top of brackets 6, 6... That are separated and fixed in the horizontal direction along the side plate 3. Reference numeral 9 denotes a stanchion or column that stands vertically at the upper end of the bracket 6. Reference numeral 10 denotes a horizontal handrail that extends over the vicinity of the upper end of the column 9, and reference numeral 11 denotes an intermediate handrail.

  The invention of Japanese Patent Application Laid-Open No. 2003-147854, “Prior Handrail of Frame Scaffolding”, relates to a preceding handrail provided at the uppermost stage of the frame scaffolding, and the handrail column and the lifting guide can move up and down along each other. Each of them is provided with a hook that can be fixed to the building frame of the frame scaffolding, and further provided with an extendable handrail that is always connected between the upper part of the handrail pillar and the hook is freely extendable.

  In addition, the invention of Japanese Patent Application Laid-Open No. 2009-191506 “Handrail and Frame Scaffolding” of Patent Document 2 is incorporated as a handrail that can be fastened between columns having different outer diameters and columns having the same outer diameter. A frame scaffolding having a pair of wedge holes and wedges that can be inserted into both of the pair of wedge holes, and mounting members that can embrace the columns to be fastened are provided at both ends of the long handrail body. A handrail provided. Further, this handrail is made to be extendable.

Further, the invention of Japanese Patent Application No. 2009-199374 “Scafter Scaffolding Member” of Patent Document 3 related to the present applicant improves the safety of the scaffolding of the temporary bracket structure that is used by fixing the bracket to the side plate wall surface of the storage tank. In order to adapt to legal regulations, a mounting support is fixed on the bracket, and a baseboard having a structure for covering and blocking the gaps on both sides of the scaffold is attached to the mounting support.

JP 2003-147554 A JP 2009-191506 A Japanese Patent Application No. 2009-199374

  As shown in FIGS. 7 and 8 of the conventional example, the scaffold 5 of the conventional temporary bracket structure used as a temporary work scaffold that is directly attached to the wall surface of the side plate 3 of the storage tank 1 is attached to the column 9 of the scaffold 5. In some cases, the tip 10a of the handrail 10 protrudes into the passage or work place on the scaffold and becomes a hindrance and becomes dangerous.

  In particular, since the wall surface of the storage tank side plate is curved, the space between the brackets 6 is not a straight line extending continuously. In addition, since it is used as a temporary work scaffold at a construction site, it is difficult to secure the distance and distance between the brackets 6 and 6 to a certain length, and the direction and the distance between the handrail 10 and the middle 11 below the handrail 10 It was irregular and could not be adjusted, making installation difficult.

  Moreover, since a member such as a simple rope is stretched between the support columns as the middle member 11, the strength is weak and it may not be fixed firmly, and it is difficult to maintain the tension, and there is a concern that it may become loose.

  In addition, there is a case where a baseboard to be a toe plate of the scaffolding board is not provided, and there is a possibility that an operator steps on the foot or drops an object from a gap on the side of the scaffolding board.

  The Occupational Safety and Health Regulations were amended (enforced on June 1, 2009). Regarding the bracket structure scaffold used at the site, the structure of the handrail and the middle was confirmed, and a baseboard, etc. was installed near the support pillar. It became essential to establish.

  The invention of Japanese Patent Application Laid-Open No. 2003-147854, “Prior Handrail of Frame Scaffolding”, relates to a preceding handrail provided at the uppermost stage of the frame scaffolding, and the handrail column when moving the handrail column up and down is disclosed. A telescopic handrail that can extend and retract between the upper part of the fixed hook is provided, and this telescopic handrail is installed at the top of the frame scaffold to prevent the operator from falling when assembling and disassembling the frame scaffold. Although it is a preceding handrail to be provided, it cannot be applied to a handrail that is mounted over and attached between the columns in a scaffold of a temporary bracket structure that is directly fixed to the wall surface of the storage tank.

  Further, the invention of Japanese Patent Application Laid-Open No. 2009-191506 “Handrail and Frame Scaffolding” in Japanese Patent Application Laid-Open No. 2009-191506 is a framework in which a mounting member that can be fastened between columns having different outer diameters and columns having the same outer diameter is provided. Although it is a handrail that can be applied to a scaffold, the structure of the handrail main body and the mounting member is complicated, and the structure is not suitable for being fixedly installed on a scaffolding column of a temporary bracket structure.

  Further, the invention of Japanese Patent Application No. 2009-199374 “Scafter Scaffolding Member” of Patent Document 3 related to the present applicant improves the safety of the scaffolding of the temporary bracket structure that is used by fixing the bracket to the side plate wall surface of the storage tank. In order to comply with legal regulations, a mounting bracket is fixed on the bracket, and a structure slanting skirting board that covers the gaps on both sides of the scaffold is attached to this mounting bracket. The handrails to be installed and Naka-san are not described.

  In the scaffold members shown in Patent Documents 1 to 3, in a bracket directly attached to a wall surface such as a side plate of a storage tank in which a horizontal plane is formed by an arc and a string, it is easy to hang between struts erected on the bracket. The handrails of the structure and Mr. Naka are not disclosed.

The object of the present invention was made in view of the problems of the above-mentioned prior art scaffolds. In the temporary bracket structure scaffolds that are directly attached to the side plate wall surface of the storage tank, safety and convenience are improved. It is intended to provide a storage tank scaffolding member adapted to various laws and regulations.

The storage tank scaffolding member according to claim 1 is a scaffold with a temporary bracket structure that is fixed and attached directly to the wall surface of the side plate, and a pillar is erected on a rod-like rod protruding from the top end of the bracket of the scaffold. near the upper end position of the strut, the intermediate vicinity, and near the lower end position, the scaffold balustrade, middle-san, and socket-like consisting of the horizontal member of the skirting an adapter for inserting insert the vertical member extending vertically downward The receiving member is attached.

The storage tank scaffolding member according to claim 2, wherein the socket-shaped receiving member corresponds to an outer diameter of a vertical member extending vertically downward from each horizontal member of the scaffolding, middle part, and baseboard of the scaffolding. short have is obtained by forming a hollow tubing to.

Reservoir scaffolding member according to claim 3, wherein, among the horizontal member of the scaffold, the handrail and medium was in using a pipe member and the rod-shaped member, skirting boards by using a flat plate of L-shaped cross section, respectively stretch The connection structure is formed.

The storage tank scaffolding member according to claim 1 is a scaffold with a temporary bracket structure that is fixed and attached directly to the wall surface of the side plate, and a pillar is erected on a rod-like rod protruding from the top end of the bracket of the scaffold. near the upper end position of the strut, the intermediate vicinity, and near the lower end position, the scaffold balustrade, middle-san, and socket-like consisting of the horizontal member of the skirting an adapter for inserting insert the vertical member extending vertically downward Since the receiving member was attached,
The length of the scaffolding member that is directly attached to the side plate of the storage tank that has an arc-shaped side wall with a non-constant distance between the side plate and the scaffold can be extended and adjusted to adjust the direction at the column mounting position even if the side plate wall surface is curved and not straight. In addition, it can be attached with good workability without complicated handling of the attachment and detachment to adjust the direction , and the functionality of the scaffolding that securely attaches the horizontal member consisting of the handrail of the removable structure and the middle and the baseboard , Safety can be improved .
In this way, the handrail does not protrude on the scaffolding plate that becomes the passage or work place, the middle is firmly fixed between the columns, and the skirting board becomes the toe plate of the scaffolding plate, so the scaffolding plate is safe It becomes a work path and work place with good workability.

The storage tank scaffolding member according to claim 2, wherein the socket-shaped receiving member corresponds to an outer diameter of a vertical member extending vertically downward from each horizontal member of the scaffolding, middle part, and baseboard of the scaffolding. short have so formed with hollow tubing to,
The handrail, the middle and the baseboard members are detachable and formed into a telescopic connection structure with a simple mounting bracket component, so the length can be easily adjusted even between brackets where the spacing is not constant. Since the structure can be installed with the direction adjusted and can be attached and detached with good workability, the functionality of the scaffold member can be improved.

Reservoir scaffolding member according to claim 3, wherein, among the horizontal member of the scaffold, the handrail and medium was in using a pipe member and the rod-shaped member, skirting boards by using a flat plate of L-shaped cross section, respectively stretch Because it was formed into a connected structure,
It can be installed easily by adjusting the length between the columns upright on the bracket.
In addition, the baseboard made of a flat plate having an L-shaped cross section has a vertical plate part that becomes a toe plate of the scaffold plate, and a horizontal plate portion that covers and covers the gap on the side surface of the scaffold plate, so that an object may roll and fall on the scaffold plate. Safety is ensured.
Thus, since the temporary scaffold member according to the present invention does not require a large temporary frame scaffold, it is possible to reduce the construction cost and the construction period.

It is an isometric view explanatory drawing which shows the example of the scaffold member for storage tanks concerning this invention. It is plane explanatory drawing which abbreviate | omitted a part of FIG. It is explanatory drawing which shows the structural example of a handrail among the scaffold members for storage tanks concerning this invention. It is explanatory drawing which shows the structural example of Mr. Naka among the scaffold members for storage tanks concerning this invention. It is explanatory drawing which shows the structure example of a baseboard among the scaffold members for storage tanks concerning this invention. It is side surface explanatory drawing which shows the condition which provided the scaffold of the bracket structure of the prior art example on the inner wall surface of the cylinder upright storage tank side plate. It is a perspective explanatory view which expands and shows a part of scaffold of the bracket structure of FIG. FIG. 8 is an explanatory plan view showing a protruding state of the handrail of FIG. 7.

An embodiment of a storage tank scaffolding member according to the present invention will be described with reference to FIGS. 1 to 5.
This embodiment shows an improvement example of the scaffold 5 of the temporary bracket structure that is directly installed on the side plate wall surface of the cylindrical upright storage tank illustrated in FIG. 6. The same term is used throughout FIGS. 1 to 5. Reference numerals are used, and a part of the description of each reference is omitted.
In the illustrated example, the temporary scaffold 5 provided on the inner wall surface of the storage tank 1 will be described. However, it goes without saying that the temporary scaffold structure scaffold provided on the outer wall surface of the storage tank 1 can also be applied.

FIG. 1 is a perspective explanatory view in which a part of the storage tank scaffold member according to the present invention is installed on a scaffold with a temporary bracket structure is omitted, and FIG. 2 is a plan explanatory view of FIG.
A mounting member 7 called Necopyus is fixed to the wall surface of the side plate 3 by welding, and a hook 7a of the bracket 6 is hooked on the mounting member 7 from above and fixed. The bracket 6 is formed in a substantially triangular shape by a horizontal rod that is horizontal on the side, a vertical rod that is vertical on the side, and an inclined rod that is inclined on the side.
A plurality of the brackets 6 are separated from each other along the horizontal direction and attached to the side plate 3, and the scaffolding plate 8 is installed over the horizontal rods of the adjacent brackets 6. Further, the front end 6d of the horizontal rod of the bracket 6 is extended vertically upward, and the lower end of the pipe-structured column 9 is inserted into the front end to rise. A handrail 15 (10) is horizontally installed near the upper edge of the column 9, and a middle 16 (11) intermediate rail structure is horizontally installed near the center. The skirting board 17 is installed horizontally over the floor.

  As shown in FIG. 1, socket-like receiving members 12 a, b, 13 a, b, 14 a, which are adapters with short hollow pipe materials, are positioned near the upper end portion, the middle portion, and the lower end portion of the column 9. b is provided, a handrail 15 (10) is inserted and attached to the receiving members 12a and b, a middle 16 (11) is inserted and attached to the receiving members 13a and b, and a skirting board 17 is inserted into the receiving members 14a and b. Install with.

  Thus, the handrail 15 (10), the middle 16 (11), and the skirting board 17 of the detachable structure to be inserted and attached to the receiving members 12a, b, 13a, b, 14a, b of the support column 9 were attached. Therefore, it can be installed on the column 9 with good workability, and the direction of the column mounting position can be freely adjusted even if the side plate wall surface is curved and not straight, thereby improving the functionality and safety of the scaffold member.

  As shown in FIG. 1 and FIG. 2, the handrail 15 (10) does not protrude onto the scaffolding plate 8 serving as a passage or a work place, and the middle 16 (11) is firmly fixed between the support columns. 17 is a toe plate of the scaffold plate 8 and also fills the gaps on the side of the scaffold plate, so that the scaffold plate 8 is a safe and workable passage and work place.

FIG. 3 is an explanatory diagram of a structural example of the handrail 15 (10) of the storage tank scaffolding member according to the present invention.
The handrail 15 is formed of a sturdy member made of a thin pipe 15A and a thick pipe 15B, and the tip of these horizontal portions is formed to be extendable and retractable by a connecting portion 15c having an insertion structure made of a tube material or a bar material.
Further, the vertical member 15a extending vertically downward from the horizontal of the thin pipe 15A and the vertical member 15b extending vertically downward from the horizontal of the thick pipe 15B are inserted into the receiving members of the column and fixed detachably. In addition, this handrail member can also be reduced in weight and can be used as a middle.

FIG. 4 is an explanatory view of a structural example of the middle 16 (11) among the storage tank scaffold members according to the present invention.
The middle 16 is formed of a lightweight member composed of a narrow pipe 16A and a thin pipe 16B, and the tip of these horizontal portions is formed to be extendable and contractable by a connecting portion 16c having an insertion structure composed of a tube material and a bar material.
Further, the vertical member 16a extending vertically downward from the horizontal of the narrow pipe 16A and the vertical member 16b extending vertically downward from the horizontal of the thin pipe 16B are inserted into the receiving members of the support column and fixed detachably. In addition, this middle member can also be used as a handrail by making the diameter thick and strong.

FIG. 5 shows a structural example of the skirting board 17 among the storage tank scaffolding members according to the present invention.
The skirting board 17 is formed of skirting boards 17A and 17B using a flat plate material having an L-shaped cross section, and the vicinity of one side edge of these skirting boards 17 is overlapped and a fixing member such as a bolt 18 or a nut for adjusting the length. 19 is formed into a telescopic connection structure. The base plate 17 having an L-shaped cross section has a vertical plate portion having a height of about 10 centimeters or more and serves as a toe plate of a scaffold plate, and a horizontal plate portion is a plate that covers a gap on the side surface of the scaffold plate.
Hook-like vertical members 17a and 17b extending vertically downward are provided at the edges of the other side of the skirting boards 17A and 17B, and the vertical members 17a and 17b are inserted into the receiving members of the support column and fixed detachably. To do.

  As described above, the receiving members 12, 13, 14 and the handrails 15, the middle 16 and the baseboard 17 constituting the storage tank scaffolding member are detachable and can be adjusted by adjusting the length and direction. It becomes a structure that can be attached and removed with good performance.

  Further, since the members of the handrail 15, the middle paddle 16, and the baseboard 17 are formed in an expansion and contraction structure, the length can be easily adjusted and installed even between the brackets whose intervals are not constant.

And it can be constructed with good workability without being caught on a safe scaffolding board, and the safety is ensured without the operator stepping on the foot and the object rolling and falling on the scaffolding board. The
Since the temporary scaffold member according to the present invention does not require a large temporary frame scaffold, it is possible to reduce the cost of construction work and shorten the construction period.

The storage tank scaffold member according to the present invention can be widely applied to a scaffold of a temporary bracket structure that is directly attached to the inner and outer wall surfaces of various storage tanks such as an upright cylindrical storage tank and a spherical storage tank.

1 Storage tank
2 Bottom plate
3 Side plate
4 Roof
5 Scaffolding
6 Bracket
7 Mounting members
8 Scaffolding board
9 Prop
10 Handrail
11 Naka
12 Receiving member
13 receiving member
14 Receiving member
15 Handrail
16 Naka
17 Skirting board
18 Long hole
19 Fixing member

Claims (3)

A scaffold with a temporary bracket structure that is directly attached to the wall of the side plate,
A pillar is erected on a rod-shaped rod protruding from the top end of the bracket of the scaffold,
Near the upper end position of the strut, midpoint position, and near the lower end position,
Scaffolding railings, medium-san, and inserted by inserting the vertical member extending vertically downward from the horizontal member of the skirting, reservoir scaffold member, characterized in that attaching the socket-shaped receiving member comprising a adapter . The socket shaped receiving member of the scaffold balustrade, Mr. medium, and that it has formed a short have hollow tubular member which corresponds to the outer diameter of the vertical member extending vertically downward from the horizontal member of the skirting The storage tank scaffolding member according to claim 1, wherein Among the horizontal members of the scaffold, the handrail and the middle are made of a pipe material and a rod-like material , and the skirting board is made of a flat plate material having an L-shaped cross section , and each is formed into a stretchable connection structure. Item 3. The storage tank scaffold according to Item 1 or 2.

Images