JPH0221207Y2 - - Google Patents

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Publication number
JPH0221207Y2
JPH0221207Y2 JP11986983U JP11986983U JPH0221207Y2 JP H0221207 Y2 JPH0221207 Y2 JP H0221207Y2 JP 11986983 U JP11986983 U JP 11986983U JP 11986983 U JP11986983 U JP 11986983U JP H0221207 Y2 JPH0221207 Y2 JP H0221207Y2
Authority
JP
Japan
Prior art keywords
cassette
frame
window
inner frame
movable frame
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
Application number
JP11986983U
Other languages
Japanese (ja)
Other versions
JPS6026807U (en
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed filed Critical
Priority to JP11986983U priority Critical patent/JPS6026807U/en
Publication of JPS6026807U publication Critical patent/JPS6026807U/en
Application granted granted Critical
Publication of JPH0221207Y2 publication Critical patent/JPH0221207Y2/ja
Granted legal-status Critical Current

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  • Moulds, Cores, Or Mandrels (AREA)
  • Manufacturing Of Tubular Articles Or Embedded Moulded Articles (AREA)

Description

【考案の詳細な説明】 本考案はマンホール用型枠のステツプ埋込装置
に関する。
[Detailed Description of the Invention] The present invention relates to a step embedding device for a manhole formwork.

マンホールは、その中を人が昇降するためU字
状のステツプが埋設されるが、このステツプの形
成は、コンクリート型枠でコンクリートを流し込
むのと同時に行われる。従来、このステツプの埋
込みは、型枠の内枠に窓を設け、この窓に、製品
内部に埋設されるステツプの基部を差込み、内側
からトロ洩れが起らないように当て板で窓をふさ
ぎこの板を各々内部で螺合固定し、コンクリート
が固化した後に、この螺合を解いて、当て板を外
すことにより行われていた。しかし、このような
従来の装置では、ステツプの埋設長さや水平精度
を正確に設定することが難しく、トロ洩れが生ず
ることが多く、また、挿脱作業のほとんどが内枠
内部で行われ、極めて作業能率が悪い。更にマン
ホールに埋設されるステツプの形状は一定とは限
らず、各種のものが使用されるが、従来の型枠で
は、特定形状で径が一定のステツプだけしか使用
出来ないものとなつている。
U-shaped steps are buried in manholes for people to ascend and descend through them, but these steps are formed at the same time as concrete is poured in concrete forms. Conventionally, steps were embedded by providing a window in the inner frame of the formwork, inserting the base of the step to be embedded inside the product into the window, and covering the window with a patch plate to prevent leakage from inside. This was accomplished by screwing and fixing the plates inside each other, and after the concrete had hardened, unscrewing the plates and removing the caul plate. However, with such conventional devices, it is difficult to accurately set the embedded length and horizontal accuracy of the step, often causing leakage, and most of the insertion/removal work is performed inside the inner frame, which is extremely time consuming. Work efficiency is poor. Furthermore, the shape of the step buried in the manhole is not necessarily constant, and various types are used, but with conventional formwork, only steps with a specific shape and constant diameter can be used.

本考案はかかる点に鑑み、内枠の外側から極め
て簡単にステツプを内枠内にセツトできると共
に、そのセツト位置の精度が極めて高く、しか
も、どのようなステツプの埋込みにも適したマン
ホール用型枠の埋込装置を提供しようとするもの
であり、その要旨とするところは、底板の上に外
枠と内枠を同心円状に配置し、外枠と内枠の間を
コンクリート注入用の室とするマンホール用型枠
において、内枠の一画を切り欠いてこれを後退可
能な可動枠とし、この可動枠に段違いに複数の窓
を設けると共にこの窓から奥行き方向に支枠を延
設する一方、この窓から挿入して支枠内に保持さ
れる脱着自在のステツプ用カセツトが設けられ、
このカセツトは上下2枚の狭圧板より成り蝶番に
て一方が開閉自在となつており、この狭圧板の対
接面にはステツプの基部が嵌まる溝が形成され、
このカセツトを前記可動枠の窓より内枠内に挿着
したときカセツトの狭圧板の開閉側が可動枠の外
面に一致すると同時に前記窓を密に閉じることを
特徴とするものである。
In view of these points, the present invention has been developed to provide a manhole mold that allows steps to be set into the inner frame from outside the inner frame extremely easily, has extremely high accuracy in setting position, and is suitable for embedding any type of step. The purpose is to provide a frame embedding device, and its gist is to place an outer frame and an inner frame concentrically on the bottom plate, and to create a chamber between the outer frame and the inner frame for concrete pouring. In the manhole formwork, one section of the inner frame is cut out to make it a retractable movable frame, and this movable frame is provided with a plurality of windows at different levels, and a supporting frame is extended from the window in the depth direction. On the other hand, a removable step cassette is provided which is inserted through this window and held within the support frame.
This cassette consists of two upper and lower narrow pressure plates, one of which can be opened and closed by a hinge, and a groove into which the base of the step fits is formed on the opposing surface of the narrow pressure plate.
When this cassette is inserted into the inner frame through the window of the movable frame, the opening/closing side of the narrow pressure plate of the cassette coincides with the outer surface of the movable frame, and at the same time, the window is tightly closed.

本考案が応用される型枠はマンホール用のもの
であるが、マンホール製品は通常円筒状でその側
壁は、直壁型のものと斜壁型のものがあり、ま
た、桝状のものもあるが、本考案はこれらの全て
に応用される。その型枠は、底板上に、外枠と内
枠を配置し、その間の室にコンクリートを注入す
るものであり、外枠は、半円筒状に2分割され、
クランプで緊締出来るようになつている。内枠は
外枠に対し同心円状に配置され、外枠を内枠の外
側に配置し、その間に形成される室がコンクリー
ト注入用の室となり、ここでコンクリートの固化
が行われる。
The formwork to which this invention is applied is for manholes, but manhole products are usually cylindrical, and their side walls can be straight-walled, slanted-walled, or box-shaped. However, the present invention can be applied to all of these. The formwork consists of placing an outer frame and an inner frame on the bottom plate, and pouring concrete into the chamber between them, and the outer frame is divided into two semi-cylindrical parts.
It can be tightened with a clamp. The inner frame is arranged concentrically with respect to the outer frame, and the outer frame is arranged outside the inner frame, and the chamber formed between them is a chamber for concrete pouring, where the concrete is solidified.

本考案においては、内枠の一画が切り欠かれ、
この切り欠き部分が進退可能な可動枠となつてい
る。この可動枠の大きさは、取り付けられるステ
ツプの全てをカバーするものであり、内枠の上縁
にまで及ぶように切り欠かれたものであつてもよ
く、また、ステツプの全てをカバーするものであ
る限り、矩形ではなく、それ以外の多角形であつ
てもよい。この可動枠の移動装置としては、従来
の装置の当て板の移動に用いられた公知の手段
(例えば、実公昭53−35586)でもよく、また、後
に述べる螺杆を用いた移動手段でもよい。
In this invention, one stroke of the inner frame is cut out,
This notch part is a movable frame that can move forward and backward. The size of this movable frame is such that it covers all of the steps to be attached, and it may be cut out to extend to the upper edge of the inner frame, or it may be of a size that covers all of the steps. As long as , it may be a polygon other than a rectangle. The moving device for this movable frame may be a known means used for moving the backing plate of a conventional device (for example, Japanese Utility Model Publication No. 53-35586), or a moving means using a screw rod, which will be described later.

かかる可動枠には、段違いに複数の窓が穿た
れ、この窓の後方には支枠が形成される。この支
枠は有底のハウジングのようなもので、ダクトの
ような後方開口を有するものでもよい。また、こ
の支枠は後方を狭くしたテーパを付けることが、
後に述べるカセツトの位置決めを行う上で都合が
よいが、支枠の上部のみ、または、側部のみをテ
ーパーにしてもよい。
A plurality of windows are bored in the movable frame at different levels, and a support frame is formed behind the windows. The support frame may be a housing with a bottom and a rear opening such as a duct. In addition, this support frame can be tapered to make it narrower at the rear.
Although it is convenient for positioning the cassette as will be described later, only the upper part or only the side part of the support frame may be tapered.

一方、本考案では前記窓から挿入されて支枠内
に保持されるステツプ用カセツトが用意される。
このカセツトは、上下2枚の挟圧板から成り一端
に蝶番が取り付けられ他端が開閉自在となつてお
り、前記可動枠の窓から支枠に挿着されたときそ
の開閉側は可動枠の外面の一部を為し窓を密に閉
じる形状となつている。また、カセツトは、挿着
時にはややきつく支枠内に保持されることが望ま
しいが、バネ付ストツパを用いて支枠内にカセツ
トを不動状態に保持するものであつてもよい。ま
た、支枠の後方が閉じておらずダクト状に開口さ
れている場合には、カセツトの後端を挿着時に支
枠後方に突出させる長さにし、コンクリートの注
入中又は固化中にカセツトが室の中に移動しない
ような何らかのストツパが突出部のカセツトと支
枠の間に設けられる。カセツトを構成する挟圧板
は、硬質ゴムのみからなるものであつてもよい
が、外側を金属又はプラスチツク板とし内部に硬
質ゴム部材としてもよく、更に、全体を金属又は
プラスチツクとしてもよい。
On the other hand, in the present invention, a step cassette is provided which is inserted through the window and held within the support frame.
This cassette is made up of two upper and lower pressure plates, with a hinge attached to one end and the other end capable of opening and closing.When inserted into the supporting frame through the window of the movable frame, the opening/closing side of the cassette is attached to the outer surface of the movable frame. It is shaped like a window that is tightly closed. Furthermore, although it is desirable that the cassette be held somewhat tightly within the support frame during insertion, a spring-loaded stopper may be used to hold the cassette immovably within the support frame. In addition, if the back of the support frame is not closed and has a duct-like opening, the rear end of the cassette should be long enough to protrude behind the support frame when it is inserted, so that the cassette is not closed during concrete pouring or hardening. Some kind of stop is provided between the cassette of the projection and the support frame to prevent it from moving into the chamber. The pressure plate constituting the cassette may be made of only hard rubber, but it may also be made of a metal or plastic plate on the outside and a hard rubber member on the inside, or it may be made entirely of metal or plastic.

このような挟圧板の上下の対接面には溝が設け
られる。この溝の形状は、埋設されるステツプの
形状によつて決定される。通常のステツプはU字
状を為しており、かかるステツプにおいては、カ
セツトの開閉側から外方にステツプの自由端が突
出し、ステツプの基部を上下から圧接できる深さ
の溝であればよいが、ステツプが円材で形成され
ている場合には、溝の形状は上下共断面が半円状
となる。かかる溝にステツプの基部を嵌め上下の
挟圧板を閉じてカセツト全体を可動板の窓より挿
着したとき溝とステツプの間には間隙がなくなる
ようにする。
Grooves are provided on the upper and lower opposing surfaces of such a pressure plate. The shape of this groove is determined by the shape of the step to be buried. A normal step has a U-shape, and in such a step, the free end of the step projects outward from the opening/closing side of the cassette, and the groove may be deep enough to press the base of the step from above and below. When the step is formed of a circular member, the groove has a semicircular cross section on both the upper and lower sides. When the base of the step is fitted into the groove, the upper and lower pressure plates are closed, and the entire cassette is inserted through the window of the movable plate, there is no gap between the groove and the step.

本考案を実施例として示す図面に従つて説明す
る。
The present invention will be explained with reference to the drawings which show examples.

1は、マンホール用型枠本体、2は外枠、3は
内枠、4は底板、5は、内外の枠2,3によつて
囲まれる室でここに未凝固のコンクリートが注入
され固化される。
1 is the manhole form body, 2 is the outer frame, 3 is the inner frame, 4 is the bottom plate, and 5 is a chamber surrounded by the inner and outer frames 2 and 3, into which unsolidified concrete is poured and hardened. Ru.

6は、内枠3の一部を下方より上縁まで矩形状
に切り欠いた可動枠で、この可動枠6には窓7が
上下に段違いに穿たれており、その後方には箱状
の支枠8が奥に向けて挟くしたテーパを付けて取
り付けられている。また、この可動枠6は内側に
移動装置9によつて進退動可能になつている。す
なわち、移動装置9は、可動枠6の内面中央の上
下の点を支点とする回動可動な連杆10が軸支さ
れ、この連杆10の他端は、底板4に垂設され上
下に反対方向の螺条11を刻設した螺杆12に
各々螺合する2つの螺合リング13の各々に回動
自在に支持されている。14は螺杆12を廻すハ
ンドルで内枠3の上に臨んでいる。
Reference numeral 6 denotes a movable frame in which a part of the inner frame 3 is cut out in a rectangular shape from the lower part to the upper edge.The movable frame 6 has windows 7 cut out vertically in different steps, and behind it is a box-shaped window 7. The support frame 8 is attached with a taper toward the back. Further, this movable frame 6 can be moved forward and backward by a moving device 9 inwardly. That is, in the moving device 9, a rotatable connecting rod 10 is pivotally supported with the upper and lower points of the center of the inner surface of the movable frame 6 as fulcrums. It is rotatably supported by two threaded rings 13 that are threaded into threaded rods 12 having threads 11 in opposite directions. 14 is a handle for turning the screw rod 12 and faces above the inner frame 3.

一方、15は、ステツプ16を保持し得るカセ
ツトであり、該カセツト15は、上下2枚の挟圧
板17より成り、一側に設けられた蝶番18によ
つて開閉自在となつている。カセツト15は、前
記窓7及び支枠8内に密に内接して保持されるよ
うに型取られ挿着時にはカセツト15乃至挟圧板
17の前面は、可動枠6の外面に一致し窓7を密
に閉じる。また、挟圧板17はハウジング19と
この中に嵌つた硬質のゴム板20から成り、その
対接面にはステツプ16の自由端側の埋設部分2
1が外にのぞみ、その基部22が嵌まる溝23が
形成されている。
On the other hand, 15 is a cassette capable of holding a step 16. The cassette 15 is made up of two upper and lower pressing plates 17, and can be opened and closed by a hinge 18 provided on one side. The cassette 15 is molded so that it is held in close contact with the window 7 and the support frame 8, and when inserted, the front surfaces of the cassette 15 and the pressure plate 17 match the outer surface of the movable frame 6, and the window 7 is held in place. Close tightly. The clamping plate 17 is made up of a housing 19 and a hard rubber plate 20 fitted therein, and the opposing surface has a buried portion 2 on the free end side of the step 16.
A groove 23 into which the base 22 of the groove 1 extends is formed.

24は、カセツト15を支枠8内にセツトした
とき、カセツト15が室5の方向に離脱しないよ
うにするためのストツパである。
24 is a stopper for preventing the cassette 15 from coming off in the direction of the chamber 5 when the cassette 15 is set in the support frame 8.

本考案は以上のように構成されているので、外
枠2を底板4から降ろした状態で、可動枠6を内
枠3と面一にセツトしておく。このためには、移
動装置9のハンドル14を廻し、連杆10の水平
距離が長くなるようにして可動枠6を前方に移動
させればよい。
Since the present invention is constructed as described above, the movable frame 6 is set flush with the inner frame 3 while the outer frame 2 is lowered from the bottom plate 4. For this purpose, the movable frame 6 may be moved forward by turning the handle 14 of the moving device 9 so that the horizontal distance of the connecting rod 10 becomes longer.

次に、カセツト15を蝶番18を介して開き、
溝23内にステツプ16の基部22を嵌め挟圧板
17を閉じ、この状態でカセツト15を蝶番18
側より可動枠6の窓7から支枠8内に挿着する。
このとき、ステツプ16の埋設部分21は室5内
に位置する。かくして、外枠2を底板4上に載
せ、クランプで止めて、室5内にコンクリート注
入する。
Next, open the cassette 15 via the hinge 18,
The base 22 of the step 16 is fitted into the groove 23 and the pressure plate 17 is closed. In this state, the cassette 15 is attached to the hinge 18.
It is inserted into the support frame 8 through the window 7 of the movable frame 6 from the side.
At this time, the buried portion 21 of the step 16 is located within the chamber 5. Thus, the outer frame 2 is placed on the bottom plate 4, clamped, and concrete is poured into the chamber 5.

コンクリートが固化するとステツプ16の埋設
部分21はコンクリートと一体化し、外枠2を外
しても内枠3との脱型はこのままの状態では不可
能であるが、前記移動装置9のハンドル14を逆
転させ、可動枠6全体を後退させる。カセツト1
5の後端が可動枠6の窓7から脱出するまで、可
動枠6を後退させたら、コンクリート製品は上方
向に障害物がなくなるまで、製品をリフトで上方
に吊り上げ内枠3からの脱型が完了する。製品を
地上に降ろしたならば、製品内壁にステツプ16
と共に未だ付いているカセツト15を蝶番18を
介して上下に開け、ステツプ16からカセツト1
6を離型させれば、ステツプ16の基部22が製
品の内壁に現われ、製品とカセツト15との脱型
も完了する。
When the concrete hardens, the embedded part 21 of the step 16 becomes integrated with the concrete, and even if the outer frame 2 is removed, it is impossible to remove the inner frame 3 from the mold in this state. to move the entire movable frame 6 backward. Cassette 1
After moving the movable frame 6 backward until the rear end of the concrete product 5 escapes from the window 7 of the movable frame 6, the concrete product is lifted upward with a lift until there are no obstacles upwards, and removed from the inner frame 3. is completed. Once the product is lowered to the ground, attach the step 16 to the inner wall of the product.
At the same time, open the cassette 15 still attached up and down via the hinge 18, and remove the cassette 1 from step 16.
6 is released from the mold, the base 22 of the step 16 appears on the inner wall of the product, and the demolding of the product and cassette 15 is completed.

本考案は以上のように、ステツプ16を支持し
たカセツト15を可動枠6の外側より窓7から挿
着するものであるので極めて簡単な操作でステツ
プ16を内枠にセツトすることが出来、また、そ
の装着位置は窓7と支枠8によつて決定されるの
で、これらの取り付けが正確に行われている限
り、カセツト15は所定の位置にセツトされ、ス
テツプ16もカセツト15の挟圧板17の溝23
に拘束されて圧接装架されているので、ステツプ
16のセツト位置も正確に決められて製品内に埋
設され、トロ洩れも可及的に防止出来る。また、
カセツト15の挟圧板17の溝23を変えるだけ
で種々の寸法及び形状のステツプの埋込に応用出
来、装置本体の改造を一切必要とせず、カセツト
を改造するにしても極めて安価である。
As described above, in the present invention, the cassette 15 supporting the step 16 is inserted from the outside of the movable frame 6 through the window 7, so the step 16 can be set in the inner frame with an extremely simple operation. , its mounting position is determined by the window 7 and the support frame 8, so as long as these are correctly mounted, the cassette 15 will be set in the predetermined position, and the step 16 will also be able to hold the pressure plate 17 of the cassette 15. groove 23
Since the step 16 is clamped and mounted under pressure, the setting position of the step 16 is also accurately determined and embedded within the product, and leakage can be prevented as much as possible. Also,
It can be applied to embedding steps of various sizes and shapes by simply changing the groove 23 of the pressure plate 17 of the cassette 15, and there is no need to modify the main body of the device, and even if the cassette is modified, it is extremely inexpensive.

更に、カセツト15が挿着される内枠3の一画
は、一枚の可動枠6となつており、これを後退さ
せることにより、一挙にコンクリート製品は吊り
上げ可能な状態となり、従来の如く、ステツプ装
架箇所毎に当て板を当てておき、脱型時には個々
的にこの当て板を取り外さねばならないという繁
雑さがなく、特に、従来では内枠下方に取り付け
られているステツプ固定装置の解放時には内枠内
に入つて作業しなければならなかつたが、本考案
では可動枠6を一体的に移動させれば足りる上、
移動装置9の操作手段を内枠3の上方に取り付け
ることが出来、脱型作業も極めて簡単となるもの
である。
Furthermore, one section of the inner frame 3 into which the cassette 15 is inserted is a single movable frame 6, and by retracting this, the concrete product can be lifted at once, and as in the past, There is no need to apply a patch plate to each step mounting point and then remove each plate individually when demolding.This is especially useful when releasing the step fixing device, which is conventionally attached to the lower part of the inner frame. Previously, it was necessary to enter the inner frame to work, but with the present invention, it is sufficient to move the movable frame 6 integrally, and
The operation means of the moving device 9 can be attached above the inner frame 3, and demolding work is also extremely simple.

【図面の簡単な説明】[Brief explanation of the drawing]

第1図はマンホール用型枠の部分断面正面図、
第2図はカセツトの一部切欠き斜視図、第3図は
開いた状態を示すカセツトの平面図、第4図は可
動枠を後退させた内枠部分の平面図、第5図は第
4図のA−A線一部断面図、第6図は可動枠を前
進させた状態を示す内枠の一部断面図、第7図は
カセツトの挿着状態を示す一部拡大断面図、第8
図は第7図のB−B線断面図である。 1……マンホール用型枠、2……外枠、3……
内枠、4……底板、5……室、6……可動枠、7
……窓、8……支枠、9……移動装置、10……
連杆、11……螺条、12……螺杆、13……螺
合リング、14……ハンドル、15……カセツ
ト、16……ステツプ、17……挟圧板、18…
…蝶番、19……ハウジング、20……ゴム板、
21……埋設部分、22……基部、23……溝、
24……ストツパ。
Figure 1 is a partial cross-sectional front view of the manhole form;
Fig. 2 is a partially cutaway perspective view of the cassette, Fig. 3 is a plan view of the cassette in the open state, Fig. 4 is a plan view of the inner frame with the movable frame retracted, and Fig. 5 is the cassette. 6 is a partial sectional view of the inner frame showing the state in which the movable frame is moved forward; FIG. 7 is a partially enlarged sectional view showing the state in which the cassette is inserted; 8
The figure is a sectional view taken along the line BB in FIG. 7. 1... Manhole formwork, 2... Outer frame, 3...
Inner frame, 4... Bottom plate, 5... Chamber, 6... Movable frame, 7
... window, 8 ... support frame, 9 ... moving device, 10 ...
Connecting rod, 11... Thread, 12... Threaded rod, 13... Threaded ring, 14... Handle, 15... Cassette, 16... Step, 17... Pressure plate, 18...
...Hinge, 19...Housing, 20...Rubber plate,
21... Buried part, 22... Base, 23... Groove,
24...stoppa.

Claims (1)

【実用新案登録請求の範囲】[Scope of utility model registration request] 底板の上に外枠と内枠を同心円状に配置し外枠
と内枠の間をコンクリート注入用の室としたマン
ホール用型枠において、内枠の一画を切り欠いて
これを進退動可能な可動枠とし、この可動枠に段
違いに複数の窓を設けると共にこの窓から奥行き
方向に支枠を延設する一方、この窓から挿入して
支枠内に内接して保持される脱着自在のステツプ
用カセツトが設けられ、このカセツトは上下2枚
の狭圧板より成り蝶番にて開閉自在となつてお
り、この狭圧板の対接面にステツプの基部が嵌ま
る溝が形成され、このカセツトを前記窓より可動
枠内に挿着したとき、カセツトの狭圧板前面が可
動枠の外面に一致すると同時に前記窓を密に閉じ
ることを特徴とするマンホール用型枠のステツプ
埋込装置。
In manhole formwork, where the outer frame and inner frame are arranged concentrically on the bottom plate, and the space between the outer frame and the inner frame is used as a chamber for pouring concrete, a section of the inner frame is cut out to allow it to move forward and backward. The movable frame is provided with a plurality of windows at different levels, and a supporting frame extends from the window in the depth direction. A step cassette is provided, and this cassette is made up of two upper and lower narrow pressure plates and can be opened and closed with a hinge.A groove into which the base of the step fits is formed on the opposing surface of this narrow pressure plate. A step embedding device for a manhole form, characterized in that when the cassette is inserted into the movable frame through the window, the front surface of the narrow pressure plate of the cassette coincides with the outer surface of the movable frame and at the same time tightly closes the window.
JP11986983U 1983-08-02 1983-08-02 Step embedding device for manhole formwork Granted JPS6026807U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP11986983U JPS6026807U (en) 1983-08-02 1983-08-02 Step embedding device for manhole formwork

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP11986983U JPS6026807U (en) 1983-08-02 1983-08-02 Step embedding device for manhole formwork

Publications (2)

Publication Number Publication Date
JPS6026807U JPS6026807U (en) 1985-02-23
JPH0221207Y2 true JPH0221207Y2 (en) 1990-06-08

Family

ID=30274931

Family Applications (1)

Application Number Title Priority Date Filing Date
JP11986983U Granted JPS6026807U (en) 1983-08-02 1983-08-02 Step embedding device for manhole formwork

Country Status (1)

Country Link
JP (1) JPS6026807U (en)

Also Published As

Publication number Publication date
JPS6026807U (en) 1985-02-23

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