JPH0329670Y2 - - Google Patents
Info
- Publication number
- JPH0329670Y2 JPH0329670Y2 JP4774186U JP4774186U JPH0329670Y2 JP H0329670 Y2 JPH0329670 Y2 JP H0329670Y2 JP 4774186 U JP4774186 U JP 4774186U JP 4774186 U JP4774186 U JP 4774186U JP H0329670 Y2 JPH0329670 Y2 JP H0329670Y2
- Authority
- JP
- Japan
- Prior art keywords
- tip
- layer
- ready
- hose
- mixed concrete
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired
Links
- 229920001971 elastomer Polymers 0.000 claims description 35
- 229910000831 Steel Inorganic materials 0.000 claims description 33
- 239000010959 steel Substances 0.000 claims description 33
- 230000003014 reinforcing effect Effects 0.000 claims description 30
- 238000004804 winding Methods 0.000 claims description 10
- 230000007423 decrease Effects 0.000 claims description 4
- 230000002787 reinforcement Effects 0.000 claims description 4
- 239000010410 layer Substances 0.000 description 44
- 239000003638 chemical reducing agent Substances 0.000 description 9
- 238000005266 casting Methods 0.000 description 7
- 229920003002 synthetic resin Polymers 0.000 description 7
- 239000000057 synthetic resin Substances 0.000 description 7
- 230000008602 contraction Effects 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 239000004744 fabric Substances 0.000 description 3
- 230000010349 pulsation Effects 0.000 description 3
- 244000043261 Hevea brasiliensis Species 0.000 description 2
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 229920003052 natural elastomer Polymers 0.000 description 2
- 229920001194 natural rubber Polymers 0.000 description 2
- 239000012779 reinforcing material Substances 0.000 description 2
- 239000002356 single layer Substances 0.000 description 2
- 229920000297 Rayon Polymers 0.000 description 1
- IDCBOTIENDVCBQ-UHFFFAOYSA-N TEPP Chemical compound CCOP(=O)(OCC)OP(=O)(OCC)OCC IDCBOTIENDVCBQ-UHFFFAOYSA-N 0.000 description 1
- 230000004323 axial length Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000005336 cracking Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 230000001737 promoting effect Effects 0.000 description 1
- 239000002964 rayon Substances 0.000 description 1
- 229920002994 synthetic fiber Polymers 0.000 description 1
- 239000012209 synthetic fiber Substances 0.000 description 1
Description
【考案の詳細な説明】
〔産業上の利用分野〕
本考案はコンクリートポンプを用いて生コンを
圧送する移送鋼管の先端に接続され、生コンを打
設場所に放出するのに用いる生コン打設先端用ゴ
ムホースに関する。[Detailed description of the invention] [Industrial field of application] This invention is used for the tip of ready-mixed concrete pouring, which is connected to the tip of a transfer steel pipe that pumps ready-mixed concrete using a concrete pump, and is used to discharge the ready-mixed concrete to the place where it is poured. Regarding rubber hoses.
建設工事や土木工事において生コンを打設する
作業では、作業を早く行なうために、ピストン式
ポンプを用いて生コンを打設現場近くまで移送鋼
管を通して圧送し、打設現場での移動を容易にす
るために、放出先端から３〜15ｍの範囲で自由に
屈曲できる可撓性ホースを移送鋼管に接続して打
設先端用ホースとして使用している。
When pouring ready-mixed concrete during construction or civil engineering work, in order to speed up the work, a piston-type pump is used to force-feed the ready-mixed concrete through steel pipes close to the pouring site, making it easier to move around the pouring site. For this reason, a flexible hose that can be bent freely within a range of 3 to 15 meters from the discharge tip is connected to the transfer steel pipe and used as a hose for the pouring tip.
即ち、生コンの圧送量を増すためにポンプに連
結した太い移送鋼管から順次レジユーサーで細い
移送鋼管に接続して打設現場に生コンを移送する
が、それでも打設現場近くでの最後の移送鋼管の
内径は一般に４インチ程度の太さがあり、第３図
に示すように、この太い移送鋼管１５に金属製の
レジユーサー１４を介して細い打設先端用ホース
１３を接続していた。この打設先端用ホース１３
として最近では、軽くて屈曲性の良い合成樹脂製
ホースが多く使用されるようになつているが、そ
れでも従来の打設先端用ホース１３は作業性の点
から一般に内径3.5インチ程度の細いものが必要
であり、通常の内径及び外径が一定の補強材入り
可撓性ホース等を適当な長さに切断して使用して
いた。 In other words, in order to increase the amount of fresh concrete pumped, the thick transfer steel pipe connected to the pump is sequentially connected to the thin transfer steel pipe at the reducer to transfer the ready-mixed concrete to the pouring site. The inner diameter is generally about 4 inches, and as shown in FIG. 3, a thin casting tip hose 13 was connected to this thick transfer steel pipe 15 via a metal reducer 14. This hose 13 for the casting tip
Recently, synthetic resin hoses that are lightweight and have good flexibility have come into use, but the conventional hose 13 for the casting tip is generally thin with an inner diameter of about 3.5 inches from the viewpoint of workability. This was necessary, and conventional flexible hoses with reinforcing materials having constant inner and outer diameters were cut into appropriate lengths and used.
しかし、レジユーサー１４は製作の都合上軸方
向の長さが短いために、生コンが太い移送鋼管１
５から細い打設先端用ホース１３に移送された際
に局部的に且つ急激に内圧が上昇する。このため
打設先端用ホース１３のレジユーサー１４との続
続部付近の内周面において摩耗が局部的に急激に
進行して、打設先端用ホース１３の寿命が極端に
短いという欠点があつた。又、レジユーサー１４
の内径は急激に小さくなるので、生コンが内部で
目詰まりを起こし易く、生コン打設作業に支障を
きたすこともあつた。 However, because the reducer 14 has a short axial length due to manufacturing reasons, the ready-mixed concrete is transferred to the thick transfer steel pipe 1.
5 to the thin casting tip hose 13, the internal pressure locally and rapidly increases. For this reason, there was a drawback that wear progressed locally and rapidly on the inner circumferential surface of the hose 13 for the casting tip in the vicinity of the continuous portion with the reducer 14, and the life of the hose 13 for the casting tip was extremely short. Also, Reuser 14
Since the inner diameter of the concrete is rapidly reduced, the ready-mixed concrete tends to become clogged inside, which sometimes causes problems in pouring ready-mixed concrete.
更に、最近使用されている合成樹脂製ホースは
軟質の合成樹脂パイプの層内に硬質の合成樹脂線
材を補強材として埋設してあるので、軽くて屈曲
性に富み、作業がしやすい利点がある。しかし、
材質的に伸びないので、生コンを送り出すピスト
ン式ポンプの脈動圧をホース内面がそのまゝ受け
て耐摩耗性に劣る軟質合成樹脂のホース内面が激
しく摩耗し、同時に鉄筋上やコンクリート上を引
きずられて外面も摩耗が激しいので、生コン打設
先端用ホースとして満足すべきものではなかつ
た。特に冬期には硬くなつてホースの柔軟性が失
なわれるので、作業がしにくくなると共に、ピス
トン式ポンプの脈動圧を全く緩和することができ
ず、上記ホース内面の摩耗が一層激しくなると共
に割れ易くなり、寿命が非常に短い欠点があつ
た。 In addition, the synthetic resin hoses that are being used these days have hard synthetic resin wire embedded as a reinforcing material within a layer of soft synthetic resin pipe, which has the advantage of being lightweight, flexible, and easy to work with. . but,
Since the material does not stretch, the inner surface of the hose receives the pulsating pressure of the piston-type pump that pumps out fresh concrete, causing severe wear on the soft synthetic resin inner surface of the hose, which has poor wear resistance.At the same time, it is dragged over reinforcing bars and concrete. Since the outer surface of the hose was also severely worn, it was not satisfactory as a hose for use at the tip of pouring ready-mixed concrete. Particularly in the winter, the hose becomes hard and loses its flexibility, making it difficult to work, and the pulsating pressure of the piston pump cannot be alleviated at all, causing further wear on the inner surface of the hose and cracking. The drawback was that it was easy to use and had a very short lifespan.
本考案は、レジユーサーを用いずに直後移送鋼
管に接続できしかも内面の急激な局部的摩耗がな
く、ホース内の脈動圧をホース自体により緩和で
き、軽量且つ柔軟で作業性に富む生コン打設先端
用ホースを提供することを目的とする。
This invention can be connected to the steel pipe for immediate transfer without using a reducer, and there is no sudden local wear on the inner surface.The pulsating pressure inside the hose can be alleviated by the hose itself.The tip of the ready-mixed concrete pouring tip is lightweight, flexible, and highly workable. The purpose is to provide hoses for
本考案の生コン打設先端用ホースは、生コンの
移送鋼管に接続する接続基部の端から生コンを放
出する先端部の端までの全長が３〜10ｍであつ
て、接続基部内径を75〜130mm及び先端部内径を
50〜100mmとし、接続基部の端から先端部の端ま
での間に内径を漸次減少させたテーパー管体部を
有するゴム管からなり、しかも該ゴム管は厚さ２
〜４mmの内面ゴム層と、内面ゴム層の外周に巻き
つけられた１層の内補強コード層と、内補強コー
ド層の外周に螺線状に巻き付けられた１本の鋼ワ
イヤーと、鋼ワイヤーの外周に巻き付けられた１
層の外補強コード層と、外補強コード層の外周に
施された厚さ1.5〜2.5mmの外面ゴム層とからなつ
ていて、内補強コード層と外補強コード層の巻き
つけ角度が65゜〜75゜及び載鋼ワイヤーの巻き付け
角度が前記補強コード層の巻き付け角度より大き
い78゜〜82゜としたものである。
The ready-mixed concrete pouring tip hose of the present invention has a total length of 3 to 10 m from the end of the connecting base that connects to the steel pipe for transferring ready-mixed concrete to the end of the tip that discharges the ready-mixed concrete, and the inner diameter of the connecting base is 75 to 130 mm. The inner diameter of the tip
It is made of a rubber tube having a tapered tube body with a diameter of 50 to 100 mm and whose inner diameter gradually decreases from the end of the connection base to the end of the tip, and the rubber tube has a thickness of 2
~4mm inner rubber layer, one inner reinforcing cord layer wrapped around the outer periphery of the inner reinforcing cord layer, one steel wire wound spirally around the outer periphery of the inner reinforcing cord layer, and steel wire. 1 wrapped around the outer circumference of
It consists of an outer reinforcing cord layer and an outer rubber layer with a thickness of 1.5 to 2.5 mm applied around the outer periphery of the outer reinforcing cord layer, and the wrapping angle of the inner reinforcing cord layer and the outer reinforcing cord layer is 65 degrees. 75 degrees and the winding angle of the steel wire is 78 degrees to 82 degrees, which is larger than the winding angle of the reinforcing cord layer.
この生コン打設先端用ホースは、移送鋼管との
接続基部側から生コンを放出する先端部まで３〜
10ｍの長さがあり、このホース全長に亘つて又は
途中に、内径を徐々に減少させたテーパー管体部
を形成してあるから、生コンは移送鋼管からこの
打設先端用ホース内をスムースに流れ、内圧が局
部的に急上昇することがなく且つ内部での目詰ま
りが起こり難い。
This hose for the tip of ready-mixed concrete pouring has 3 to
The length of this hose is 10m, and since the hose has a tapered pipe body whose inner diameter gradually decreases over the entire length or in the middle, the ready-mixed concrete can be smoothly passed from the transfer steel pipe into the hose for the pouring tip. The flow and internal pressure do not locally rise sharply, and internal clogging is less likely to occur.
又、生コンを打設個所に放出するためにホース
先端部を人が操作するとき、先端部ほど小径とな
つているために、希望場所に生コンを打設するた
めの屈曲が容易となり、取扱いやすくなる。 In addition, when a person operates the tip of the hose to discharge the ready-mixed concrete to the pouring location, since the tip has a smaller diameter, it is easier to bend the hose to pour the ready-mixed concrete to the desired location, making it easier to handle. Become.
接続基部の内径を75〜130mmの範囲とするのは
通常使用される生コン移送鋼管の内径が３インチ
（76.2mm）、3.5インチ（88.9mm）、４インチ（101.6
mm）及び５インチ（127mm）であるからである。
又、接続基部内径が130mm及び先端部内径が100mm
を共に超える太いホースではホース全体の重量が
重くなると共に柔軟性が損なわれて生コン打設作
業が困難となり、接続部内径が75mm及び先端部内
径が50mm未満の細いホースでは生コン放出量が少
なくなり能率的でなくなると共に長時間打設作業
をするとホース内で生コンが凝固し易くなる。
又、内径が上記範囲内であつても、テーパー管体
部の勾配が余り急であると生コンのスムーズな流
れが阻害されるので、テーパー管体部の勾配は7/
１００００〜13/10000の範囲が好ましい。この勾配が1
３／１００００を超えると内圧が上昇してホースの摩耗
が激しくなり、勾配が7/10000未満ではホース全
体が太く且つ重くなりやすく、取り扱い易さに欠
ける。 The inner diameter of the connection base is set in the range of 75 to 130 mm because the inner diameter of the normally used ready-mixed concrete transfer steel pipe is 3 inches (76.2 mm), 3.5 inches (88.9 mm), or 4 inches (101.6 mm).
mm) and 5 inches (127 mm).
Also, the inner diameter of the connection base is 130mm and the inner diameter of the tip is 100mm.
A hose that is thicker than both increases the overall weight of the hose and loses its flexibility, making it difficult to place ready-mixed concrete.A thinner hose with an inner diameter of 75 mm at the connection end and less than 50 mm at the tip will result in a reduced amount of ready-mixed concrete released. In addition to being inefficient, fresh concrete tends to solidify inside the hose if pouring work is carried out for a long time.
Also, even if the inner diameter is within the above range, if the slope of the tapered pipe body is too steep, the smooth flow of ready-mixed concrete will be inhibited, so the slope of the tapered pipe body should be set to 7/2.
The range of 10,000 to 13/10,000 is preferable. This slope is 1
If the slope exceeds 3/10,000, the internal pressure will increase and the hose will become more abrasive, and if the slope is less than 7/10,000, the entire hose will tend to be thick and heavy, making it difficult to handle.
しかも第２図に示すように、ホース材料として
合成樹脂より可撓性の大きいゴムを用い、内面ゴ
ム層１の外周に合成繊維製のすだれ布を１層に巻
きつけた内補強コード層２、その上に１本の鋼ワ
イヤー３、及びその上に内補強コード層２と逆向
きに１層に巻きつけた外補強コード層４を設けて
耐圧性を付与してある。内補強コード層２及び外
補強コード層４の巻きつけ角度βを静止角度
（54゜44′）より大きい65゜〜75゜とすることにより、
ホースが脈動圧を受けて容易に長手方向に伸縮し
て内圧を吸収するようにしてある。補強コード層
２，４の巻き付け角度βが65゜より小さいと脈動
の昇圧期にホースの伸長が追従しなくなり、75゜
より大きいと脈動の降圧期にホースの収縮が追従
しなくなる。鋼ワイヤー３の巻きつけ角度αは補
強コード層２，４の巻きつけ角度βより更に大き
い78゜〜82゜としたが、それは硬い鋼ワイヤー３の
傾斜を容易にして補強コード層２，４の傾斜を妨
げず、脈動の降圧期にホースの収縮を助長する効
果があるためである。内面ゴム層１及び外面ゴム
層５は耐久性の点からは厚いほうが好ましいが、
厚すぎるとホースの伸縮性が悪くなり、鋼ワイヤ
ー３及び補強コード層２，４の伸縮を妨げる。内
面ゴム層１は生コンと常時接触するので最小２mm
の厚さが必要であり、４mmを超えると伸縮性を阻
害し、外面ゴム層５は補強層を充分覆うために最
小1.5mmの厚さが必要で、2.5mmを超えると伸縮性
を阻害する。 Moreover, as shown in FIG. 2, rubber, which is more flexible than synthetic resin, is used as the hose material, and an inner reinforcing cord layer 2 is formed by wrapping a single layer of synthetic fiber blind cloth around the outer periphery of the inner rubber layer 1. A single steel wire 3 is provided thereon, and an outer reinforcing cord layer 4 wound in a single layer in the opposite direction to the inner reinforcing cord layer 2 is provided thereon to provide pressure resistance. By setting the winding angle β of the inner reinforcing cord layer 2 and the outer reinforcing cord layer 4 to 65° to 75°, which is larger than the rest angle (54° 44'),
The hose is designed to easily expand and contract in the longitudinal direction in response to pulsating pressure to absorb internal pressure. If the winding angle β of the reinforcing cord layers 2 and 4 is smaller than 65°, the extension of the hose will not follow the pressure increase phase of pulsation, and if it is larger than 75°, the contraction of the hose will not follow the pressure drop phase of pulsation. The winding angle α of the steel wire 3 was set to 78° to 82°, which is larger than the winding angle β of the reinforcing cord layers 2 and 4. This is because it does not hinder the inclination and has the effect of promoting contraction of the hose during the pressure drop phase of pulsation. It is preferable that the inner rubber layer 1 and the outer rubber layer 5 are thicker from the viewpoint of durability.
If it is too thick, the elasticity of the hose will be poor and the expansion and contraction of the steel wire 3 and reinforcing cord layers 2 and 4 will be hindered. The inner rubber layer 1 is in constant contact with the ready-mixed concrete, so the minimum thickness is 2 mm.
The outer rubber layer 5 needs to have a minimum thickness of 1.5 mm to sufficiently cover the reinforcing layer, and if it exceeds 4 mm, it will inhibit elasticity. .
本考案の一実施例を第１図について説明する。
この生コン打設先端用ゴムホースの一端は移送鋼
管に接続するための接続金具８を内側に取付け且
つ外周に固定用リング９を嵌るために外径及び内
径を一定にした接続基部１０が設けてあり、この
接続基部１０の内径は105mmで長さは50cmである。
他端は生コンを放出する先端部１１であつて内径
88.9mmで長さ20cmになつている。接続基部10と先
端部１１の間は内径及び外径が漸次減少した長さ
7.5ｍのテーパー管体部１２となつている。又、
先端部１１の外周には環状突起を設けて作業用ロ
ープ等を結びやすくしてある。
An embodiment of the present invention will be described with reference to FIG.
One end of this rubber hose for placing the ready-mixed concrete is provided with a connecting base 10 having a constant outer diameter and inner diameter in order to attach a connecting fitting 8 for connecting to a transfer steel pipe on the inside and to fit a fixing ring 9 on the outer periphery. The inner diameter of this connecting base 10 is 105 mm and the length is 50 cm.
The other end is the tip part 11 that releases ready-mixed concrete, and has an inner diameter
It measures 88.9mm and is 20cm long. The length between the connection base 10 and the tip 11 is a length in which the inner diameter and outer diameter gradually decrease.
It has a tapered tube body part 12 of 7.5 m. or,
An annular projection is provided on the outer periphery of the tip portion 11 to make it easier to tie a working rope or the like.
この生コン打設先端用ゴムホースの断面構造を
みると、鉄マンドレル（図示せず）を用いて形成
した天然ゴムからなる厚さ３mmの内面ゴム層１の
上に、厚さ１mmで幅120mmのテトロン製すだれ布
を巻き付け角度β＝70゜で一層に巻き付けて内補
強コード層２を形成してある。内補強コード層２
の外周には直径2.6mmの鋼ワイヤー３をピツチ12
mm及び巻きつけ角度α＝80゜で内補強コード層２
と同向きに巻き回し、その上にSBRゴムからな
る中間ゴム層６を厚さ0.7mmに形成し、更にその
上に上記すだれ布を巻きつけ角度β＝70゜で鋼ワ
イヤー３と逆向きに一層に巻きつけて外補強コー
ド層４を形成してある。 Looking at the cross-sectional structure of this rubber hose for the tip of ready-mixed concrete pouring, we see that a tetron with a thickness of 1 mm and a width of 120 mm is placed on an inner rubber layer 1 of 3 mm thick made of natural rubber formed using an iron mandrel (not shown). The inner reinforcing cord layer 2 is formed by wrapping the blind cloth in one layer at a winding angle β=70°. Inner reinforcement cord layer 2
A steel wire 3 with a diameter of 2.6 mm is placed around the outer circumference of the
Inner reinforcement cord layer 2 with mm and winding angle α = 80°
Then, on top of that, an intermediate rubber layer 6 made of SBR rubber is formed with a thickness of 0.7 mm, and the above-mentioned blind cloth is further wound on top of it at an angle β = 70° in the opposite direction to the steel wire 3. The outer reinforcing cord layer 4 is formed by wrapping the cord in one layer.
中間ゴム層６は鋼ワイヤー３の固着のために形
成したものであり、内補強コード層２及び外補強
コード層４にトツピングゴムが施してあれば特に
形成しなくても良い。 The intermediate rubber layer 6 is formed for fixing the steel wire 3, and does not need to be particularly formed if the inner reinforcing cord layer 2 and the outer reinforcing cord layer 4 are coated with topping rubber.
更に、外補強コード層４の外周には鋼ワイヤー
３と同ピツチでレーヨンの加工糸７が鋼ワイヤー
３と半ピツチだけずれて巻き付けてあり、ホース
の屈曲性を高めるようになつている。加工糸７は
ホースの屈曲性を高めるためのもであり、使用し
なくても良い。最外周には天然ゴムからなる外面
ゴム層５が厚さ２mmに施してある。 Furthermore, processed rayon yarn 7 is wound around the outer circumference of the outer reinforcing cord layer 4 at the same pitch as the steel wire 3, with a half pitch shift from the steel wire 3, so as to enhance the flexibility of the hose. The processed yarn 7 is for increasing the flexibility of the hose, and does not need to be used. On the outermost periphery, an outer rubber layer 5 made of natural rubber is applied to a thickness of 2 mm.
本考案によれば、生コン打設先端用ゴムホース
をレジユーサーを用いずに直後に従来の移送鋼管
に接続でき、しかも生コン打設先端用ゴムホース
は移送鋼管との接続基部の端から先端部の端まで
３〜10ｍの長さがあり、このホース全長に亘つて
又は途中に、内径を徐々に減少させたテーパー管
体部を形成してあるから、生コンは移送鋼管から
この打設先端用ゴムホース内をスムースに流れる
ことができ、内圧の上昇が分散されて局部的な内
圧の急上昇がない。
According to the present invention, the rubber hose for the tip of ready-mixed concrete pouring can be immediately connected to the conventional transfer steel pipe without using a reducer, and the rubber hose for the tip of ready-mixed concrete pouring extends from the end of the connection base to the transfer steel pipe to the end of the tip. The length of this hose is 3 to 10 meters, and a tapered pipe body part with an inner diameter gradually reduced is formed along the entire length or in the middle of the hose, so the ready-mixed concrete is transferred from the transfer steel pipe to the rubber hose for the pouring tip. It can flow smoothly, and the rise in internal pressure is dispersed, so there is no local sudden rise in internal pressure.
更に、この生コン打設先端用ゴムホースは内圧
の変化によく順応して伸縮し内圧を緩衝できるの
で、内圧の上昇を０〜７Kgｆ／cm2に抑えることが
できる。 Furthermore, this rubber hose for the tip of ready-mixed concrete pouring can adapt well to changes in internal pressure, expand and contract, and buffer internal pressure, so that increases in internal pressure can be suppressed to 0 to 7 kgf/cm 2 .
このように、本考案の生コン打設先端用ゴムホ
ースは長手方向の伸縮により内圧を緩衝できると
共に内圧の局部的な急上昇がないので、生コンの
通過による内面の摩耗を減少でき耐久性に優れ且
つ生コンがスムーズに流れて目詰まりが発生する
ことがない。又、レジユーサーを使用しなくて良
いので、レジユーサーの摩耗に伴なうレジユーサ
ーの取り替え作業がなくなる。特に、冬期におけ
る耐久性は合成樹脂製の打設先端用ホースの３倍
以上であつた。 In this way, the rubber hose for the tip of ready-mixed concrete of the present invention can buffer internal pressure by expanding and contracting in the longitudinal direction, and there is no local sudden rise in internal pressure, so it can reduce wear on the inner surface due to the passage of ready-mixed concrete, and has excellent durability. flows smoothly and no clogging occurs. Furthermore, since there is no need to use a reducer, there is no need to replace the reducer due to its wear. In particular, the durability in winter was more than three times that of synthetic resin hoses for casting ends.
更に、接続基部の内径を従来の移送鋼管の内径
より大きくして生コンの移送効率を改善でき、及
び／又は先端部の内径を従来の打設先端用ホース
の内径より小さくできるので、作業する先端部を
従来より軽量にでき、良好な屈曲性とあいまつて
作業性を改善することができる。 Furthermore, the inner diameter of the connection base can be made larger than the inner diameter of conventional transfer steel pipes to improve the transfer efficiency of ready-mixed concrete, and/or the inner diameter of the tip can be made smaller than the inner diameter of conventional pouring tip hoses, so that the working tip can be This makes it possible to make the part lighter than before, and together with good flexibility, it is possible to improve workability.
第１図は本考案の生コン打設先端用ゴムホース
の側面図で、上半分を断面で示したものであり、
第２図は本考案ホースの各層を段階的に剥いで示
した側面図であり、第３図は従来の生コン打設先
端用ゴムホースをレジユーサーを用いて移送鋼管
に接続した状態を示す側面図である。
１……内面ゴム層、２……内補強コード層、３
……鋼ワイヤー、４……外補強コード層、５……
外面ゴム層、６……中間ゴム層、７……加工糸、
１０……接続基部、１１……先端部、１２……テ
ーパー管体部。
Figure 1 is a side view of the rubber hose for the tip of ready-mixed concrete pouring according to the present invention, showing the upper half in cross section.
Figure 2 is a side view showing the hose of the present invention with each layer peeled off in stages, and Figure 3 is a side view showing a conventional rubber hose for the tip of ready-mixed concrete pouring connected to a transfer steel pipe using a reducer. be. 1... Inner rubber layer, 2... Inner reinforcing cord layer, 3
... Steel wire, 4 ... Outer reinforcement cord layer, 5 ...
Outer rubber layer, 6...middle rubber layer, 7...processed yarn,
10... Connection base, 11... Tip, 12... Tapered pipe body.
Claims (1)
ら生コンを放出する先端部の端までの全長が３
〜10ｍであつて、接続基部内径を75〜130mm及
び先端部内径を50〜100mmとし、接続基部の端
から先端部の端までの間に内径を漸次減少させ
たテーパー管体部を有するゴム管からなり、該
ゴム管は厚さ２〜４mmの内面ゴム層と、内面ゴ
ム層の外周に巻き付けられた一層の内補強コー
ド層と、内補強コード層の外周に螺旋状に巻き
付けられた１本の鋼ワイヤーと、鋼ワイヤーの
外周に巻き付けられた１層の外補強コード層
と、外補強コード層の外周に施された厚さ1.5
〜2.5mmの外面ゴム層とからなつていて、内補
強コード層と外補強コード層の巻き付け角度が
65゜〜75゜及び鋼ワイヤーの巻きつけ角度が前記
補強コード層の巻き付け角度より大きい78゜〜
82゜である生コン打設先端用ゴムホース。 (2) 上記テーパ管体部の勾配が7/10000〜13/1000
０であることを特徴とする、実用新案登録請求
の範囲(1)記載の生コン打設先端用ゴムホース。[Scope of claim for utility model registration] (1) The total length from the end of the connection base that connects to the steel pipe for transferring ready-mixed concrete to the end of the tip that discharges ready-mixed concrete is 3.
A rubber tube with a diameter of ~10 m, an inner diameter of the connecting base of 75 to 130 mm, an inner diameter of the tip of 50 to 100 mm, and a tapered tube body whose inner diameter gradually decreases from the end of the connecting base to the end of the tip. The rubber tube consists of an inner rubber layer with a thickness of 2 to 4 mm, an inner reinforcing cord layer wound around the outer periphery of the inner reinforcing cord layer, and one layer spirally wound around the outer periphery of the inner reinforcing cord layer. steel wire, one layer of outer reinforcement cord wrapped around the outer circumference of the steel wire, and a thickness of 1.5
It consists of a ~2.5mm outer rubber layer, and the wrapping angle of the inner reinforcing cord layer and outer reinforcing cord layer is
65° to 75° and 78° to 78°, where the winding angle of the steel wire is larger than the winding angle of the reinforcing cord layer.
A rubber hose with an angle of 82° for the tip of ready-mixed concrete. (2) The slope of the tapered pipe body above is 7/10000 to 13/1000.
0. A rubber hose for a ready-mixed concrete pouring tip according to claim (1) of utility model registration, characterized in that:
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4774186U JPH0329670Y2 (en) | 1986-03-31 | 1986-03-31 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4774186U JPH0329670Y2 (en) | 1986-03-31 | 1986-03-31 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS62163389U JPS62163389U (en) | 1987-10-17 |
| JPH0329670Y2 true JPH0329670Y2 (en) | 1991-06-24 |
Family
ID=30868632
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP4774186U Expired JPH0329670Y2 (en) | 1986-03-31 | 1986-03-31 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0329670Y2 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US11154053B2 (en) | 2019-02-05 | 2021-10-26 | Bluegreen Water Technologies Ltd. | Compositions for controlling phytoplankton contamination |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2007315453A (en) * | 2006-05-24 | 2007-12-06 | Toyo Tire & Rubber Co Ltd | Front hose for placing ready-mixed concrete and pipe line for transferring ready-mixed concrete |
-
1986
- 1986-03-31 JP JP4774186U patent/JPH0329670Y2/ja not_active Expired
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US11154053B2 (en) | 2019-02-05 | 2021-10-26 | Bluegreen Water Technologies Ltd. | Compositions for controlling phytoplankton contamination |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS62163389U (en) | 1987-10-17 |
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