CN202055232U - Steel drawing tube device for drain hole of high-lift layer concrete - Google Patents
Steel drawing tube device for drain hole of high-lift layer concrete Download PDFInfo
- Publication number
- CN202055232U CN202055232U CN2011201327972U CN201120132797U CN202055232U CN 202055232 U CN202055232 U CN 202055232U CN 2011201327972 U CN2011201327972 U CN 2011201327972U CN 201120132797 U CN201120132797 U CN 201120132797U CN 202055232 U CN202055232 U CN 202055232U
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- steel
- tube
- drawing tube
- drain hole
- concrete
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Abstract
A steel drawing tube device for a drain hole of a high-lift layer concrete comprises a steel drawing tube. A foam layer is wrapped outside the steel drawing tube. Hosting holes are arranged on the upper portion of the steel drawing tube, and a drawing tube top cover is arranged at the top of the steel drawing tube. The steel drawing tube is of a through long-cylindrical-shaped structure with a conical opening on the lower portion and formed by a seamless steel tube, thereby being not easy to misplace when concrete is poured. The outer surface of the seamless steel tube is smooth and wrapped with the foam layer. The inside and outside of the seamless steel tube are bright and clean so that the steel drawing tube is easy to pull out. The concrete wall face of the formed dam body drain hole is smooth, thereby ensuring pouring quality of concrete. Additionally, the steel drawing tube is not easy to deform after being pulled out, thereby being capable of being used repeatedly. The top cover at the top can avoid blocking caused by the fact that mud and the like flow into the tube in the pouring process of the concrete. The whole device can be used repeatedly, thereby being labor-saving, time-saving, convenient to construct, safe and reliable to use, flexible in operation and capable of improving construction quality and work efficiency.
Description
Technical field
The utility model relates to a kind of dam body draining steel pipe drawing device, is specifically related to a kind of promotion layer concrete dam body drain hole steel tube drawing template that is applicable to.
Background technology
In construction of hydro project, the general design of dam dam body has the dam body drain hole about φ 200mm, is used to discharge the dam concrete infiltration, and the smoothness of drain hole pore-forming plays an important role to guaranteeing the casting of concrete in mass quality.From Three Gorges Projects, the exploration to dam body drain hole job practices has just been arranged, experienced from pipe of cement to wooden tube drawing again technological innovation process, though can both satisfy structural requirement, the defective of various degrees still to steel tube drawing outsourcing insulation quilt.Rise in the construction of layer position in storehouse dam body drain hole at conventional concrete, also adopted the PVC tube drawing, and the technical scheme of reel as lifting appliance be set in tube drawing inside, the easy demoulding of pvc pipe, but in promotion layer concrete (more than the concreting bed thickness 3m) construction, pvc pipe is easy to be pulled off in withdrawal process, the easy blocking problem of dam body drain hole can not be solved, the construction quality of dam body drain hole can not be guaranteed.
Summary of the invention
The purpose of this utility model provide a kind of reusable, reduce production costs, be easy to processing, make simple, economical and practical promotion layer concrete drain hole steel pipe drawing device.
The utility model is achieved in that a kind of promotion layer concrete drain hole steel pipe drawing device, comprises the steel tube drawing, and its steel tube drawing outsourcing froth bed is provided with hole for hoist on steel tube drawing top, and steel tube drawing top is provided with the tube drawing top cover.The steel tube drawing is through elongated cylindrical structure, and its underpart opening is taper.The half-cylindrical foam of a pair of hollow constitutes.
The promotion layer concrete drain hole steel pipe drawing device that the utility model provides, steel tube drawing adopt seamless steel pipe to make, and are the Long Circle structure that connects, and the bottom is the taper end opening, are difficult for dislocation when concreting; Seamless steel pipe is a smooth outer surface, and the outsourcing froth bed is inside and outside bright and clean, and after the concreting, the steel tube drawing is extracted easily, and the dam body drain hole concrete wall of formation is smooth, has guaranteed concrete pouring quality; And not yielding after steel pipe is extracted, can be repeatedly used; The top cover at top can prevent in the concreting process, has in the inflow pipe such as mud, causes stopping up.Whole device is reusable, the saving of labor, save time, easy construction, safe and reliable, flexible operation can improve workmanship and effect.
Description of drawings
The utility model is described in further detail below in conjunction with drawings and Examples.
Fig. 1 is a utility model steel tube drawing structural representation.
Fig. 2 is the structural representation after the utility model installs froth bed additional.
The specific embodiment
Structure of the present utility model is as follows: a kind of promotion layer concrete drain hole steel pipe drawing device, comprise steel tube drawing 1, and steel tube drawing 1 outsourcing froth bed 2 is provided with hole for hoist 3 on steel tube drawing 1 top, and steel tube drawing 1 top is provided with tube drawing top cover 4.Steel tube drawing 1 is through elongated cylindrical structure, and its underpart opening 5 is taper.Froth bed 2 constitutes for the half-cylindrical foam by a pair of hollow.
When the utility model uses, design size according to engineering dam body drain hole, the half-cylindrical foam that selection is made steel tube drawing 1 and a pair of hollow by seamless steel pipe constitutes outsourcing foam 2, be coated with the butter of 1mm thickness on steel tube drawing 1 surface, outsourcing froth bed 2 is installed again and is encased steel tube drawing 1, use gummed tape lid seam, bind, form draining steel tube drawing;
Use tie rod and horizontal steel tube to carry out draining steel tube drawing strengthening construction, steel tube drawing 1 mouth of pipe tube drawing top cover 4 adopts iron sheet to seal, and prevents in the concreting process inflow steel pipes such as mud are arranged, with its obstruction.
Hole for hoist 3 is located at apart from about 10cm place, steel tube drawing 1 top, when steel tube drawing 1 is installed and removed, hangs the thing rope and passes through from hole for hoist 3; 15-20h after the concreting upwards rotates steel tube drawing 1 by the steel pipe axis direction when adopting the manual interlocking, treat that steel tube drawing 1 is loosening after, use cucurbit or crane upwards tube drawing to be extracted along the steel pipe axis direction, the outsourcing froth bed comes off easily from heavy and light.
Claims (3)
1. a promotion layer concrete drain hole steel pipe drawing device comprises steel tube drawing (1), it is characterized in that: steel tube drawing (1) outsourcing froth bed (2), be provided with hole for hoist (3) on steel tube drawing (1) top, and steel tube drawing (1) top is provided with tube drawing top cover (4).
2. promotion layer concrete drain hole steel pipe drawing device according to claim 1 is characterized in that: steel tube drawing (1) is through elongated cylindrical structure, and its underpart opening (5) is taper.
3. promotion layer concrete drain hole steel pipe drawing device according to claim 1, it is characterized in that: froth bed (2) is made of the half-cylindrical foam of a pair of hollow.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011201327972U CN202055232U (en) | 2011-04-28 | 2011-04-28 | Steel drawing tube device for drain hole of high-lift layer concrete |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011201327972U CN202055232U (en) | 2011-04-28 | 2011-04-28 | Steel drawing tube device for drain hole of high-lift layer concrete |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202055232U true CN202055232U (en) | 2011-11-30 |
Family
ID=45015209
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011201327972U Expired - Fee Related CN202055232U (en) | 2011-04-28 | 2011-04-28 | Steel drawing tube device for drain hole of high-lift layer concrete |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202055232U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102890030A (en) * | 2012-10-23 | 2013-01-23 | 中国水利水电科学研究院 | Experiment device and method for testing change of elastic modulus of dam concrete along with age |
-
2011
- 2011-04-28 CN CN2011201327972U patent/CN202055232U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102890030A (en) * | 2012-10-23 | 2013-01-23 | 中国水利水电科学研究院 | Experiment device and method for testing change of elastic modulus of dam concrete along with age |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20111130 Termination date: 20190428 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |