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JP3597489B2 - safety cover - Google Patents
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JP3597489B2 - safety cover - Google Patents

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Publication number
JP3597489B2
JP3597489B2 JP2001162412A JP2001162412A JP3597489B2 JP 3597489 B2 JP3597489 B2 JP 3597489B2 JP 2001162412 A JP2001162412 A JP 2001162412A JP 2001162412 A JP2001162412 A JP 2001162412A JP 3597489 B2 JP3597489 B2 JP 3597489B2
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Japan
Prior art keywords
frame
pipe
safety cover
main frame
net
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JP2001162412A
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Japanese (ja)
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JP2002356837A (en
Inventor
正文 草野
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Individual
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Description

【0001】
【発明の属する技術分野】
本発明は水路、歩道路等の凹溝にごみが入ったり、人が転落するのを防止する安全カバーに関する。
【0002】
【従来の技術】
農業水路等のカバーとして実用新案登録第1584567号(実公昭59−23794号)、実公平4−34197号公報、実公平4−34198号公報等に記載のものがある。
【0003】
これは図13に示すように、パイプにより屋根形に形成した主フレーム1の内側に同じくパイプによる補助フレーム2を配置して、これで枠体3を形成する。この場合、該補助フレーム2はその途中が主フレーム1と部分的に結合し、ブレース的な存在となる。
【0004】
このような枠体3を、水路4の堰堤41に設けたアングル状の金属製のベースプレート5を介して適宜間隔で立設し、かつ、並列する枠体3の相互は主フレーム1を同じくパイプからなる横材としての継ぎフレーム6で連結することにより、水路4の長さ方向に連結する。そして、全体上面に鋼製網体によるカバーネット7を布設した。
【0005】
このように施工された図13のカバーは、補助フレーム2で強度が増した枠体3を必要数増していくだけで容易に延設でき、全体としての強度もこの枠体3が主として負担するので高く、例えば非常時などに人間がカバーに乗っても安全に対処できる。
【0006】
【発明が解決しようとする課題】
しかし、前記図13に示すカバーは枠体3は主フレーム1と補助フレーム2との2本のパイプからなるもので、部材点数が多いとともに、これらフレーム相互を離脱しないように結合する必要があり、前記実用新案登録第1584567号(実公昭59−23794号)では、主フレーム1と補助フレーム2とを一緒に取り囲むように帯状の締付けバンド8により固定している。該締付けバンド8の端はボルト、ナット22で止める。
【0007】
また、実公平4−34197号公報では適宜な長さの短尺な鞘管を溶接で一方のフレームに取り付け、他方のフレームをこの鞘管内に挿通させている。このように枠体3は主フレーム1と補助フレーム2との2本のパイプからなるのでは、組み立て等が面倒である。
【0008】
本発明の目的前記従来例の不都合を解消し、主フレームのみで済むようにして、部材点数を減らし、組み立ての手間の簡素化、工期の短縮化とコストの低減が可能で、また、強度的にも補助フレームを備えた従来品に遜色がない安全カバーを提供することにある。
【0009】
【課題を解決するための手段】
本発明は前記目的を達成するため、第1に、円弧に湾曲するパイプ主フレームの端部は円弧の延長として直線部分となるが、この端部に、パイプ主フレームに外側から嵌めるパイプであり、先端を共に潰して平坦にしてここにボルト挿通用の孔を穿設した補強材を嵌めて2重構造とし、その先端部分を平坦にしてここにボルト挿通用の孔を穿設して枠体部材を構成し、この枠体部材端部を凹溝側壁の上端部に固定された金属製のベースにボルト止めして複数の枠体部材を適宜間隔で架設し、これら枠体部材に凹溝長さ方向に向かうパイプ継ぎフレームを上に載置するようにして架け渡し、交差する主フレームと継ぎフレームとは針金状弾性部材により結合し、これらに金属製カバーネットを布設したことを要旨とするものである。
【0010】
第2に、針金状弾性部材は、一方のパイプに掛け回す縦向き逆U字部分と、このU字部分の端部の折り曲げ部分として他方のパイプに掛け回すU型湾曲部と、さらにその先の延設直線部分とからなり、平行する延設直線部分の先を湾曲させて突き合わせて一方のパイプに掛け回す開き可能な逆U字部分としたこと、第3に、金属製のベースは適宜間隔を存して設置し、金属製カバーネットの外側端部には網目を互い違いに縫うように貫通して丸棒によるネット固定部材を配設し、このネット固定部材を複数のベースに跨がって沿わせ、JまたはUボルトでベースにボルト止めすることを要旨とするものである。
【0011】
請求項1記載の本発明によれば、枠体はパイプ主フレーム1本のみであり、補助フレームを必要としないので、部材点数が少なく、主フレームと補助フレームとを結合する手間も不要である。そして、主フレームは全体が円弧に湾曲する、いわゆるアーチ型として強度的に安定し、しかも、取り付けのために端部を平坦にして孔明けするとこの部分が脆弱部分となるおそれがあるが、補強材を嵌めて2重構造とすることでそのようなおそれがなく、一層強度的に信頼性の高いものとなる。
【0012】
また、交差する主フレームと継ぎフレームとは針金状弾性部材で簡単に結合できる。
【0013】
さらに、継ぎフレームはこれを上にして架設するので、仮押さえが必要とならずに針金状弾性部材を掛けることができ、また、この継ぎフレーム自体も人等を支えることができるので強度部材として利用することが可能となる。
【0014】
請求項2記載の本発明によれば、前記作用に加えて、針金状弾性部材はそのままの形状を利用して主フレームと継ぎフレームとを迅速に結合できる。
【0015】
請求項3記載の本発明によれば、金属製カバーネットの外側端部は丸棒に対するJまたはUボルトのボルト止めで引張力を加えながら、また、簡単にベースにボルト止めすることができ、平板をネット固定部材としてこれをベースにボルト止めする場合に比べて、長穴などを設けなくとも位置の微調整が楽にできる。
【0016】
【発明の実施の形態】
以下、図面について本発明の実施の形態を詳細に説明する。図1は本発明の安全カバーの1実施形態を示す平面図、図2は同上側面図で、図3は一部省略した正面図で、図中9は農業用水路、歩行路、その他の凹溝であり、9aは凹溝9の側壁である。
【0017】
凹溝9に人が転落したり、ごみが入ったりするのを防止するために本発明の安全カバーが架設されるが、枠体部材11は、円弧に湾曲するパイプ主フレーム10のみで構成し、従来の補助フレームを省略した。
【0018】
パイプ主フレーム10の端部は円弧の延長として直線部分となるが、この端部には図4に示すように補強材12を嵌めて2重構造とした。補強材12はパイプ主フレーム10の端に外側から嵌めるパイプであり、一例として主フレーム10がφ19.1とすると、2.3±以上の太さのもので、図5、図6に示すように100〜150m/m程度(α部分)を残してその先端を共に潰して平坦にしてここにボルト挿通用の孔13を穿設した。該孔13は主フレーム10と補強材12を共に潰した上で、一緒に貫通さればよい。
【0019】
図4中、14は横断面L型の金属製のベースであるが、ベース4は50cmの長さを有しており、図9に示すように50cm間隔で凹溝9の側壁9aの上端に固定部材としてのアンカーボルト15およびナットにより固定する。
【0020】
また、ベース14の両端面には四角形の金属製の取付プレート14aを溶接で設けて、全体を上面、前面開放の横長箱体とした。この取付プレート14aにもボルト挿通用の孔13′を穿設する。
【0021】
このようにして、前記枠体部材11の端部をベース14の取付プレート14aに取付ボルト16でボルト止めして複数の枠体部材11を凹溝9上に適宜間隔で架設し、これら枠体部材11に凹溝9の長さ方向に向かうパイプ継ぎフレーム17を上に載置するようにして架け渡した。
【0022】
本実施形態では継ぎフレーム17は主フレーム10の円弧に沿って3本を間隔を存して平行させ、交差する主フレーム10と継ぎフレーム17とは針金状弾性部材18により結合する。
【0023】
図10、図11に針金状弾性部材18の詳細を示すと、一方のパイプに掛け回す縦向き逆U字部分18aと、この縦向き逆U字部分18aの端部の折り曲げ部分として他方のパイプに掛け回すU型湾曲部18bと、さらにその先の延設直線部分18cとからなり、平行する延設直線部分18cの先を湾曲させて突き合わせて一方のパイプに掛け回す開き可能な逆U字部分18dとした。
【0024】
開き可能な逆U字部分18dから全体を開いて、縦向き逆U字部分18aを主フレーム10の上に位置する継ぎフレーム17に掛け回し、そのままU型湾曲部18bを主フレーム10の下から掛け回して延設直線部分18cを斜め上方へもってきて、最後に開き可能な逆U字部分18dを継ぎフレーム17に引っかけて掛け回す。
【0025】
このようにして主フレーム10に継ぎフレーム17を固定したならば、これらに金属製カバーネット19を布設するが、図7に示すように、金属製カバーネット19の外側端部には網目を互い違いに縫うように貫通して丸棒20によるネット固定部材を配設しておく。
【0026】
前記のごとく、金属製のベース14は適宜間隔を存して設置されており、この複数のベース14に跨がって丸棒20を沿わせ、JまたはUボルト21でベース14の垂直片部にボルト止めする。
【0027】
このようにして構成された本発明の安全カバーによる検討結果を下記に示す。
【0028】
設計条件は下記の通りである。(図12参照)

Figure 0003597489
【0029】
Figure 0003597489
【0030】
Figure 0003597489
【0031】
Figure 0003597489
【0032】
Figure 0003597489
【0033】
Figure 0003597489
【0034】
Figure 0003597489
【0035】
Figure 0003597489
【0036】
Figure 0003597489
【0037】
Figure 0003597489
【0038】
上記計算結果より、仮定部材(パイプ19.1φ×1.2t) を主フレーム10での主要部材として使用しても問題がない。
【0039】
【発明の効果】
以上述べたように本発明の安全カバーは、凹溝(水路等)に人が落ちたりごみが入るのを防止できるものとして、主フレームのみで済むようにして、部材点数を減らし、組み立ての手間の簡素化、工期の短縮化とコストの低減が可能で、また、強度的にも補助フレームを備えた従来品に遜色がないものである。
【図面の簡単な説明】
【図1】本発明の安全カバーの1実施形態を示す平面図である。
【図2】本発明の安全カバーの1実施形態を示す側面図である。
【図3】本発明の安全カバーの1実施形態を示す一部省略した正面図である。
【図4】本発明の安全カバーの1実施形態を示すベース部分の斜視図である。
【図5】主フレーム端部の制作過程を示す説明図である。
【図6】主フレーム端部の縦断側面図である。
【図7】本発明の安全カバーの1実施形態を示す説明図である。
【図8】本発明の安全カバーの1実施形態を示すベース部分の正面図である。
【図9】本発明の安全カバーの1実施形態を示すベース設置状態の斜視図である。
【図10】主フレームと継ぎフレームとの結合で針金状弾性部材の使用を示す止め前段階の斜視図である。
【図11】主フレームと継ぎフレームとの結合で針金状弾性部材の使用を示す止め後段階の斜視図である。
【図12】設計条件計算のための説明図である。
【図13】従来例を示す正面図である。
【符号の説明】
1…主フレーム 2…補助フレーム
3…枠体 4…水路
5…ベースプレート
6…継ぎフレーム 7…カバーネット
8…締付けバンド 9…ボルト・ナット
9…凹溝 9a…側壁
10…主フレーム 11…枠体部材
12…補強材 13,13′…孔
14…ベース 14a…取付プレート
15…アンカーボルト 16…取付ボルト
17…継ぎフレーム 18…針金状弾性部材
18a…縦向き逆U字部分 18b…U型湾曲部
18c…延設直線部分 18d…開き可能な逆U字部分
19…金属製カバーネット 20…丸棒
21…JまたはUボルト 22…ボルト・ナット
41…堰堤[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to a safety cover for preventing dirt from entering a groove such as a waterway or a sidewalk or preventing a person from falling down.
[0002]
[Prior art]
Examples of covers for agricultural waterways and the like include those described in Utility Model Registration No. 1584567 (Japanese Utility Model Publication No. 59-23794), Japanese Utility Model Publication No. 4-34197, Japanese Utility Model Publication No. 4-34198, and the like.
[0003]
As shown in FIG. 13, an auxiliary frame 2 also made of a pipe is arranged inside a main frame 1 formed in a roof shape by a pipe, thereby forming a frame 3. In this case, the auxiliary frame 2 is partially connected to the main frame 1 in the middle, and has a brace-like existence.
[0004]
Such frame members 3 are erected at appropriate intervals via an angle-shaped metal base plate 5 provided in a bank 41 of the waterway 4, and the frame members 3 arranged in parallel are connected to the main frame 1 by the same pipe. The connection is made in the length direction of the water channel 4 by connecting with the joint frame 6 as a cross member made of. Then, a cover net 7 made of a steel net was laid on the entire upper surface.
[0005]
The cover of FIG. 13 constructed in this manner can be easily extended simply by increasing the required number of frames 3 having increased strength with the auxiliary frame 2, and the overall strength is mainly borne by the frame 3. High, for example, even if a person gets on the cover in an emergency or the like, it can safely cope.
[0006]
[Problems to be solved by the invention]
However, in the cover shown in FIG. 13, the frame body 3 is composed of two pipes, the main frame 1 and the auxiliary frame 2, so that the number of members is large and it is necessary to connect these frames so as not to separate from each other. In Japanese Utility Model Registration No. 1584567 (Japanese Utility Model Publication No. 59-23794), the main frame 1 and the auxiliary frame 2 are fixed together by a band-shaped tightening band 8 so as to surround them together. The ends of the tightening band 8 are fixed with bolts and nuts 22.
[0007]
In Japanese Utility Model Publication No. 4-34197, a short sheath tube having an appropriate length is attached to one frame by welding, and the other frame is inserted through the sheath tube. Since the frame 3 is composed of the two pipes of the main frame 1 and the auxiliary frame 2, assembling is troublesome.
[0008]
The object of the present invention is to eliminate the disadvantages of the conventional example and to use only the main frame, reduce the number of members, simplify the assembling labor, shorten the construction period and reduce the cost, and also reduce the strength. An object of the present invention is to provide a safety cover that is comparable to a conventional product having an auxiliary frame.
[0009]
[Means for Solving the Problems]
In order to achieve the above object, the present invention firstly provides a pipe which is fitted into the pipe main frame from the outside at the end of the pipe main frame which curves into an arc, which is a straight portion as an extension of the arc . The two ends are squashed together and flattened, and a reinforcing material having a hole for bolt insertion is fitted therein to form a double structure. The front end is flattened and a hole for bolt insertion is formed here to form a frame. A frame member is formed, and an end of the frame member is bolted to a metal base fixed to the upper end portion of the groove side wall, and a plurality of frame members are bridged at appropriate intervals. The main point is that the pipe joint frame extending in the groove length direction is placed on top and bridged over, and the intersecting main frame and joint frame are joined by a wire-like elastic member, and a metal cover net is laid on these. It is assumed that.
[0010]
Secondly, the wire-like elastic member has a vertically inverted U-shaped portion looped around one pipe, a U-shaped curved portion looped around the other pipe as a bent portion at the end of the U-shaped portion, and further beyond. And an openable inverted U-shaped portion which is formed by bending the ends of parallel extending straight portions and abutting them on one of the pipes . Third, a metal base is appropriately provided. It is installed at intervals, and a net fixing member made of a round bar is arranged at the outer end of the metal cover net so as to sew the mesh alternately, and this net fixing member straddles a plurality of bases. The main point is to bolt the base with a J or U bolt.
[0011]
According to the first aspect of the present invention, since the frame body is only one pipe main frame and does not require an auxiliary frame, the number of members is small, and labor for connecting the main frame and the auxiliary frame is unnecessary. . The main frame is curved in a circular arc as a whole, and is stable as a so-called arch type. Moreover, if the end is flattened and drilled for mounting, this part may become a fragile part. There is no such a possibility by fitting the material into a double structure, and the strength is more reliable.
[0012]
In addition, the main frame and the joining frame that intersect can be easily connected by a wire-like elastic member.
[0013]
Furthermore, since the joint frame is erected with this on top, wire-like elastic members can be hung without the need for temporary holding, and since the joint frame itself can support people etc., it is used as a strength member. It can be used.
[0014]
According to the second aspect of the present invention, in addition to the above operation, the main frame and the joining frame can be quickly connected by using the shape of the wire-like elastic member as it is.
[0015]
According to the third aspect of the present invention, the outer end of the metal cover net can be easily bolted to the base while applying a tensile force with a J or U bolt to the round bar, Compared to a case where a flat plate is used as a net fixing member and bolted to the base, fine adjustment of the position can be easily performed without providing a long hole or the like.
[0016]
BEST MODE FOR CARRYING OUT THE INVENTION
Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings. 1 is a plan view showing an embodiment of the safety cover of the present invention, FIG. 2 is an upper side view thereof, FIG. 3 is a partially omitted front view, and 9 in the figure is an agricultural waterway, a walkway, and other grooves. Reference numeral 9a denotes a side wall of the concave groove 9.
[0017]
The safety cover of the present invention is installed to prevent a person from falling into the concave groove 9 and dust from entering, but the frame member 11 is constituted only by the pipe main frame 10 curved into an arc. The conventional auxiliary frame is omitted.
[0018]
The end of the pipe main frame 10 is a straight portion as an extension of an arc, and a reinforcing member 12 is fitted to this end as shown in FIG. 4 to form a double structure. The reinforcing member 12 is a pipe which is fitted to the end of the pipe main frame 10 from the outside. As an example, when the main frame 10 has a diameter of φ19.1, it has a thickness of 2.3 ± or more, as shown in FIGS. In this case, the ends were crushed and flattened, leaving about 100 to 150 m / m (α portion), and holes 13 for bolt insertion were formed here. The hole 13 may be formed by crushing both the main frame 10 and the reinforcing member 12 and then penetrating the same together.
[0019]
In FIG. 4, reference numeral 14 denotes a metal base having an L-shaped cross section. The base 4 has a length of 50 cm, and is provided at an upper end of the side wall 9a of the concave groove 9 at intervals of 50 cm as shown in FIG. It is fixed by anchor bolts 15 and nuts as fixing members.
[0020]
Further, a rectangular metal mounting plate 14a is provided on both end surfaces of the base 14 by welding, so that the whole is a horizontally long box having an upper surface and an open front surface. A hole 13 'for bolt insertion is also formed in the mounting plate 14a.
[0021]
In this manner, the end portions of the frame member 11 are bolted to the mounting plate 14a of the base 14 with the mounting bolts 16 so that the plurality of frame members 11 are bridged on the concave grooves 9 at appropriate intervals. The pipe joint frame 17 extending in the length direction of the concave groove 9 was placed over the member 11 so as to be placed thereon.
[0022]
In this embodiment, three splicing frames 17 are arranged in parallel along the arc of the main frame 10 at intervals, and the intersecting main frame 10 and splicing frame 17 are joined by a wire-like elastic member 18.
[0023]
FIGS. 10 and 11 show details of the wire-like elastic member 18. The vertical inverted U-shaped portion 18 a wrapped around one pipe and the other pipe as a bent portion at the end of the vertical inverted U-shaped portion 18 a are shown. An open U-shaped bent portion comprising a U-shaped curved portion 18b and an extended straight line portion 18c ahead of the U-shaped curved portion 18b. The portion was 18d.
[0024]
The entirety is opened from the openable inverted U-shaped portion 18d, and the vertically-inverted inverted U-shaped portion 18a is wrapped around the joint frame 17 located on the main frame 10, and the U-shaped curved portion 18b is directly held from below the main frame 10. The extension straight portion 18c is moved obliquely upward, and the openable inverted U-shaped portion 18d is finally hooked on the joint frame 17 and wrapped around.
[0025]
After the joining frame 17 is fixed to the main frame 10 in this way, a metal cover net 19 is laid on these, but as shown in FIG. A net fixing member by the round bar 20 is disposed so as to penetrate the sewing machine.
[0026]
As described above, the metal bases 14 are installed at appropriate intervals, and the round bar 20 is laid along the plurality of bases 14, and the vertical piece of the base 14 is Bolt.
[0027]
The results of a study using the safety cover of the present invention thus configured are shown below.
[0028]
The design conditions are as follows. (See Fig. 12)
Figure 0003597489
[0029]
Figure 0003597489
[0030]
Figure 0003597489
[0031]
Figure 0003597489
[0032]
Figure 0003597489
[0033]
Figure 0003597489
[0034]
Figure 0003597489
[0035]
Figure 0003597489
[0036]
Figure 0003597489
[0037]
Figure 0003597489
[0038]
From the above calculation results, there is no problem even if the assumed member (pipe 19.1 φ × 1.2 t) is used as the main member in the main frame 10.
[0039]
【The invention's effect】
As described above, the safety cover according to the present invention can reduce the number of members by simplifying the assembling process by using only the main frame as it can prevent a person from falling into the concave groove (water channel or the like) or entering dirt. It is possible to shorten the construction, shorten the construction period, and reduce the cost, and it is comparable in strength to the conventional product having the auxiliary frame.
[Brief description of the drawings]
FIG. 1 is a plan view showing one embodiment of a safety cover of the present invention.
FIG. 2 is a side view showing an embodiment of the safety cover of the present invention.
FIG. 3 is a partially omitted front view showing an embodiment of the safety cover of the present invention.
FIG. 4 is a perspective view of a base portion showing one embodiment of the safety cover of the present invention.
FIG. 5 is an explanatory diagram showing a production process of an end of a main frame.
FIG. 6 is a vertical sectional side view of an end of a main frame.
FIG. 7 is an explanatory view showing one embodiment of the safety cover of the present invention.
FIG. 8 is a front view of a base portion showing one embodiment of the safety cover of the present invention.
FIG. 9 is a perspective view of a base installed state showing one embodiment of the safety cover of the present invention.
FIG. 10 is a perspective view showing a stage before stopping showing the use of a wire-like elastic member in the connection between the main frame and the joining frame.
FIG. 11 is a perspective view of a post-stop stage showing the use of a wire-like elastic member in the connection between the main frame and the joining frame.
FIG. 12 is an explanatory diagram for calculating design conditions.
FIG. 13 is a front view showing a conventional example.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 ... Main frame 2 ... Auxiliary frame 3 ... Frame 4 ... Water channel 5 ... Base plate 6 ... Joint frame 7 ... Cover net 8 ... Tightening band 9 ... Bolt / Nut 9 ... Groove 9a ... Side wall 10 ... Main frame 11 ... Frame Member 12 Reinforcement 13, 13 'Hole 14 Base 14a Mounting plate 15 Anchor bolt 16 Mounting bolt 17 Joint frame 18 Wire-like elastic member 18a Vertical inverted U-shaped portion 18b U-shaped curved portion 18c ... Extended linear portion 18d ... Openable inverted U-shaped portion 19 ... Metal cover net 20 ... Round bar 21 ... J or U bolt 22 ... Bolt / nut 41 ... Dike

Claims (3)

円弧に湾曲するパイプ主フレームの端部は円弧の延長として直線部分となるが、この端部に、パイプ主フレームに外側から嵌めるパイプであり、先端を共に潰して平坦にしてここにボルト挿通用の孔を穿設した補強材を嵌めて2重構造とし、その先端部分を平坦にしてここにボルト挿通用の孔を穿設して枠体部材を構成し、この枠体部材端部を凹溝側壁の上端部に固定された金属製のベースにボルト止めして複数の枠体部材を適宜間隔で架設し、これら枠体部材に凹溝長さ方向に向かうパイプ継ぎフレームを上に載置するようにして架け渡し、交差する主フレームと継ぎフレームとは針金状弾性部材により結合し、これらに金属製カバーネットを布設したことを特徴とする安全カバー。The end of the pipe main frame that curves into an arc becomes a straight line part as an extension of the arc, but this end is a pipe that fits into the pipe main frame from the outside. A reinforcing member having a hole formed therein is fitted to form a double structure, a tip portion thereof is flattened, and a hole for bolt insertion is formed therein to form a frame member. A plurality of frame members are erected at appropriate intervals by bolting to a metal base fixed to the upper end of the groove side wall, and a pipe joint frame extending in the length direction of the concave groove is placed on these frame members. A safety cover, wherein the main frame and the intersecting frame that are crossed over and connected by a wire-like elastic member, and a metal cover net is laid on these. 針金状弾性部材は、一方のパイプに掛け回す縦向き逆U字部分と、このU字部分の端部の折り曲げ部分として他方のパイプに掛け回すU型湾曲部と、さらにその先の延設直線部分とからなり、平行する延設直線部分の先を湾曲させて突き合わせて一方のパイプに掛け回す開き可能な逆U字部分とした請求項1記載の安全カバー。The wire-like elastic member includes a vertically inverted U-shaped portion to be looped around one pipe, a U-shaped curved portion to be looped around the other pipe as a bent portion of an end of the U-shaped portion, and an extended straight line further therefrom. 2. The safety cover according to claim 1, wherein the safety cover comprises an openable inverted U-shaped portion that is formed by bending the ends of the parallel extending straight portions and abutting them around one pipe. 金属製のベースは適宜間隔を存して設置し、金属製カバーネットの外側端部には網目を互い違いに縫うように貫通して丸棒によるネット固定部材を配設し、このネット固定部材を複数のベースに跨がって沿わせ、JまたはUボルトでベースにボルト止めする請求項1または請求項2に記載の安全カバー。The metal base is installed at appropriate intervals, and a net fixing member made of a round bar is arranged at the outer end of the metal cover net so as to sew the mesh alternately. The safety cover according to claim 1 or 2, wherein the safety cover extends along a plurality of bases and is bolted to the bases with J or U bolts.
JP2001162412A 2001-05-30 2001-05-30 safety cover Expired - Lifetime JP3597489B2 (en)

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JP4762883B2 (en) * 2006-12-27 2011-08-31 日鐵住金建材株式会社 Fence for easy panel removal
JP5682121B2 (en) * 2010-03-04 2015-03-11 大日本印刷株式会社 Petri dish for preparation of fractionation medium
JP2016204873A (en) * 2015-04-17 2016-12-08 ランデックス工業株式会社 Side groove coating
CN116867752B (en) * 2020-12-18 2025-07-04 贺利氏科纳米北美有限责任公司 Multilayer sintered ceramic body

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