WO2011050617A1 - Pre-positioning device for connecting support post and platform of mixing plant and mixing system using same - Google Patents
Pre-positioning device for connecting support post and platform of mixing plant and mixing system using same Download PDFInfo
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- WO2011050617A1 WO2011050617A1 PCT/CN2010/074195 CN2010074195W WO2011050617A1 WO 2011050617 A1 WO2011050617 A1 WO 2011050617A1 CN 2010074195 W CN2010074195 W CN 2010074195W WO 2011050617 A1 WO2011050617 A1 WO 2011050617A1
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- platform
- connecting plate
- positioning device
- support column
- mixing station
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
- E04B1/00—Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
- E04B1/18—Structures comprising elongated load-supporting parts, e.g. columns, girders, skeletons
- E04B1/24—Structures comprising elongated load-supporting parts, e.g. columns, girders, skeletons the supporting parts consisting of metal
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
- E04B1/00—Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
- E04B1/18—Structures comprising elongated load-supporting parts, e.g. columns, girders, skeletons
- E04B1/24—Structures comprising elongated load-supporting parts, e.g. columns, girders, skeletons the supporting parts consisting of metal
- E04B1/2403—Connection details of the elongated load-supporting parts
Definitions
- Pre-positioning device and stirring system for connecting stirring column support column and platform
- the utility model relates to the field of concrete mixing equipment, in particular to a pre-positioning device and a stirring system for connecting a supporting column of a mixing station and a platform.
- the technical problem to be solved by the utility model is to overcome the deficiencies of the prior art, and provide a pre-positioning device and a stirring system for connecting the supporting column and the platform of the mixing station with convenient, quick and accurate installation, saving time and labor, and improving work efficiency. .
- a pre-positioning device for connecting a support column of a mixing station and a platform comprising: one or more first connecting plates disposed on the supporting column; and one or more second connecting plates disposed on the platform at positions corresponding to the first connecting plate
- the first connecting plate and the second connecting plate are rotatably connected by a connecting shaft.
- the first connecting plate is a piece
- the second connecting plate is two pieces, and is disposed in parallel with each other, and the first connecting plate is sandwiched between the two second connecting plates
- a through hole is defined in each of the first connecting plate and the second connecting plate, and the connecting shaft is disposed in the through hole.
- the first connecting plate is fixedly connected to the supporting column, and the second connecting plate is fixedly connected to the platform.
- the first connecting plate is an isosceles right triangle structure.
- the connecting shaft is a pin or a mandrel.
- a concrete mixing system includes a mixing station, and the pre-positioning device is provided on a supporting column and a platform of the mixing station.
- the utility model has the following beneficial effects:
- the connecting plates for the pre-positioning are respectively arranged on the supporting columns and the platform of the concrete mixing station, they are pre-positioned and connected into a rotatable whole by the connecting shaft, so the supporting column can be rotated by the rotation of the connecting shaft before installation.
- the connecting shaft When it is placed on the platform, when the support column needs to be installed on the platform, it is only necessary to lift the support column by the crane, and the support column will not be separated from the platform, and the relative position of the connection hole on the support hole will not be It can be changed and automatically aligned, thus eliminating the need to manually realign the support column and the bolt connection hole on the platform.
- the installation is very fast, convenient and accurate, saving time and labor, and improving work efficiency.
- FIG. 1 is a schematic structural view of a first connecting plate provided on a support column
- FIG. 2 is a schematic structural view of a second connecting plate on a platform
- FIG. 3 is a side view showing a schematic view of an application example of the pre-positioning device of the present invention.
- FIG. 4 is a top plan view showing an application example of the pre-positioning device of the present invention.
- FIG. 5 is a partial structural schematic view of the stirring system of the present invention.
- Support column 2. Platform; 31, first connecting plate; 32, second connecting plate; 33, connecting shaft; 34, through hole; 4. connecting bolt; 41, bolt connecting hole.
- the pre-positioning device for connecting the supporting column of the mixing station and the platform of the utility model comprises one or more first connecting plates 31 disposed on the supporting column 1 and disposed on the platform 2 and One or more second connecting plates 32 at corresponding positions of one connecting plate 31, and the first connecting plate 31 and the second connecting plate 32 are rotatably connected by a connecting shaft 33.
- the first connecting plate 31 is a piece, and is fixedly disposed at a middle portion of the side of the supporting column 1.
- the first connecting plate 31 has a right-angled triangle shape, preferably an isosceles right triangle.
- the structure has a large contact area, saves material, and does not form an interference when the support column 1 is placed on the platform 2.
- the second connecting plate 32 is two blocks and is fixedly disposed on the platform 2 in parallel with each other.
- the first connecting plate 31 is sandwiched between the two second connecting plates 32, and the first connecting plate 31 and the second connecting plate 32 are respectively A through hole 34 is provided, and the connecting shaft 33 is bored in the through hole 34.
- the connecting shaft 33 can be a pin shaft or a mandrel. In the embodiment, the connecting shaft 33 is a pin shaft, and the structure is simple, and the installation is convenient and stable.
- Pre-positioning method According to the pre-designed positioning size (the positioning size should be able to connect the support column 1 and the platform 2
- the bolt connection holes 41 of the joint are aligned.
- the first connecting plate 31 and the second connecting plate 32 are respectively disposed on the same side of the joint of the supporting column 1 and the platform 2, and are rotatably connected in advance through the connecting shaft 33. In one.
- the support column 1 is rotated and placed on the platform 2 by the rotation of the connecting shaft 33.
- the support column 1 is simply erected by the hoisting machine, and the connection between the support column 1 and the platform 2 is not separated due to the connection of the connecting shaft 33, and the support column 1 and the platform 2 are connected for connection.
- the relative position of the bolt connection hole 41 does not change any more, and can be automatically aligned, so that the position of the support column 1 and the platform 2 need not be manually placed again, and the connection bolt 4 is directly inserted into the bolt connection of the support column 1 and the platform 2.
- the connecting bolt 4 can be tightened and fixed. The installation is convenient and fast, and the hole is accurate, which can save time, labor and improve work efficiency.
- the concrete mixing system of the present invention comprises a mixing station, which is to install a pre-positioning device of the utility model according to the above method on the supporting column 1 and the platform 2 of the existing mixing station.
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- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
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- Structural Engineering (AREA)
- Preparation Of Clay, And Manufacture Of Mixtures Containing Clay Or Cement (AREA)
Abstract
A pre-positioning device for connecting a support post (1) and a platform (2) of a mixing plant and a mixing system using the same are provided. The pre-positioning device includes at least one first connecting plate (31) provided on the support post (1) and at least one second connecting plate (32) provided on the platform (2) and matched with the first connecting plate (31), and both of them are rotatablely connected together by a connecting shaft (33). The mix system includes a mixing plant, wherein the support post (1) and the platform (2) thereof are provided with the pre-positioning device. The pre-positioning device can improve the installation efficiency.
Description
用于搅拌站支撑立柱与平台连接的预定位装置及搅拌系统 技术领域 Pre-positioning device and stirring system for connecting stirring column support column and platform
本实用新型涉及混凝土搅拌设备领域，特别涉及一种用于搅拌站支撑立柱与平台连 接的预定位装置及搅拌系统。 The utility model relates to the field of concrete mixing equipment, in particular to a pre-positioning device and a stirring system for connecting a supporting column of a mixing station and a platform.
背景技术 Background technique
通常情况下， 在安装混凝土搅拌站支撑立柱时， 需要先使用吊车吊着立柱， 然后安 装人员将立柱连接处的连接孔同平台上的连接孔对准， 再插入螺栓， 最后拧紧螺栓。 但 采用这种连接方式通常存在以下不足： （1 ) 安装时太费时。 传统方式需要人工对孔， 非常麻烦； （2) 安装时太费力。 传统方式安装时如果孔对的不太准， 就需要使用撬棍 或者其它工具来对孔， 非常费力。 因此这种传统的连接方式其工作效率不高， 还存在一 定的安全隐患。 Normally, when installing the concrete mixing station support column, you need to use the crane to hang the column first, then the installer aligns the connection hole at the column connection with the connection hole on the platform, inserts the bolt, and finally tightens the bolt. However, the use of this type of connection usually has the following disadvantages: (1) Installation is too time consuming. The traditional method requires manual hole punching, which is very troublesome; (2) It is too laborious to install. In the traditional way, if the hole pair is not accurate, it is necessary to use a crowbar or other tools to the hole, which is very laborious. Therefore, this traditional connection method is not efficient, and there are still certain security risks.
实用新型内容 Utility model content
本实用新型要解决的技术问题是克服现有技术的不足， 提供一种安装方便快捷、 准 确且能省时省力、工作效率提高的用于搅拌站支撑立柱与平台连接的预定位装置及搅拌 系统。 The technical problem to be solved by the utility model is to overcome the deficiencies of the prior art, and provide a pre-positioning device and a stirring system for connecting the supporting column and the platform of the mixing station with convenient, quick and accurate installation, saving time and labor, and improving work efficiency. .
为解决上述技术问题， 本实用新型提出的技术方案为： In order to solve the above technical problems, the technical solution proposed by the utility model is:
一种用于搅拌站支撑立柱与平台连接的预定位装置，包括设置于支撑立柱上一块以 上的第一连接板和设置于平台上与第一连接板相对应位置处的一块以上第二连接板，所 述第一连接板和第二连接板通过连接轴可转动地连接。 A pre-positioning device for connecting a support column of a mixing station and a platform, comprising: one or more first connecting plates disposed on the supporting column; and one or more second connecting plates disposed on the platform at positions corresponding to the first connecting plate The first connecting plate and the second connecting plate are rotatably connected by a connecting shaft.
作为对本实用新型的进一步改进，所述第一连接板为一块，所述第二连接板为两块， 并相互平行设置， 第一连接板夹设于两块第二连接板之间， 所述第一连接板和第二连接 板上均设有通孔， 所述连接轴穿设于所述通孔内。 As a further improvement of the present invention, the first connecting plate is a piece, the second connecting plate is two pieces, and is disposed in parallel with each other, and the first connecting plate is sandwiched between the two second connecting plates, A through hole is defined in each of the first connecting plate and the second connecting plate, and the connecting shaft is disposed in the through hole.
作为对本实用新型的进一步改进， 所述第一连接板与所述支撑立柱固定连接， 所述 第二连接板与平台固定连接。 As a further improvement of the present invention, the first connecting plate is fixedly connected to the supporting column, and the second connecting plate is fixedly connected to the platform.
作为对本实用新型的进一步改进， 所述第一连接板为等腰直角三角形结构。 As a further improvement of the present invention, the first connecting plate is an isosceles right triangle structure.
作为对本实用新型的进一步改进， 所述连接轴为销轴或心轴。 As a further improvement of the present invention, the connecting shaft is a pin or a mandrel.
一种混凝土搅拌系统， 包括搅拌站， 所述搅拌站的支撑立柱和平台上设有上述预定 位装置。
与现有技术相比， 本实用新型具有以下有益效果： A concrete mixing system includes a mixing station, and the pre-positioning device is provided on a supporting column and a platform of the mixing station. Compared with the prior art, the utility model has the following beneficial effects:
由于在混凝土搅拌站的支撑立柱与平台上分别设置了用于预定位的连接板，通过连 接轴将它们预先定位连接成了可转动的整体， 因此在安装之前通过连接轴的转动可将支 撑立柱倒放在平台上， 当需要将支撑立柱安装在平台上时， 只需用吊车吊起支撑立柱正 立好， 支撑立柱便不会再与平台分离， 其上的连接孔的相对位置也不会再改变， 且可自 动对准， 从而省去了人工重新对准支撑立柱与平台上螺栓连接孔的过程， 其安装非常快 捷、 方便、 准确， 省时又省力， 提高了工作效率。 Since the connecting plates for the pre-positioning are respectively arranged on the supporting columns and the platform of the concrete mixing station, they are pre-positioned and connected into a rotatable whole by the connecting shaft, so the supporting column can be rotated by the rotation of the connecting shaft before installation. When it is placed on the platform, when the support column needs to be installed on the platform, it is only necessary to lift the support column by the crane, and the support column will not be separated from the platform, and the relative position of the connection hole on the support hole will not be It can be changed and automatically aligned, thus eliminating the need to manually realign the support column and the bolt connection hole on the platform. The installation is very fast, convenient and accurate, saving time and labor, and improving work efficiency.
附图说明 DRAWINGS
图 1是支撑立柱上设置第一连接板的结构示意图； 1 is a schematic structural view of a first connecting plate provided on a support column;
图 2是平台上设置第二连接板的结构示意图； 2 is a schematic structural view of a second connecting plate on a platform;
图 3是本实用新型的预定位装置应用例的侧视结构示意图； 3 is a side view showing a schematic view of an application example of the pre-positioning device of the present invention;
图 4是本实用新型的预定位装置应用例的俯视结构示意图； 4 is a top plan view showing an application example of the pre-positioning device of the present invention;
图 5是本实用新型搅拌系统的局部结构示意图。 Figure 5 is a partial structural schematic view of the stirring system of the present invention.
图例说明： illustration:
1、 支撑立柱； 2、 平台； 31、 第一连接板； 32、 第二连接板； 33、 连接轴； 34、 通 孔； 4、 连接螺栓； 41、 螺栓连接孔。 1. Support column; 2. Platform; 31, first connecting plate; 32, second connecting plate; 33, connecting shaft; 34, through hole; 4. connecting bolt; 41, bolt connecting hole.
具体实施方式 detailed description
下面结合具体实施例及附图对本实用新型作进一步的说明。 The present invention will be further described below in conjunction with the specific embodiments and the accompanying drawings.
如图 3和图 4所示， 本实用新型的用于搅拌站支撑立柱与平台连接的预定位装置， 包 括设置于支撑立柱 1上一块以上的第一连接板 31和设置于平台 2上与第一连接板 31相对 应位置处的一块以上第二连接板 32，第一连接板 31和第二连接板 32通过连接轴 33可转动 地连接。 As shown in FIG. 3 and FIG. 4, the pre-positioning device for connecting the supporting column of the mixing station and the platform of the utility model comprises one or more first connecting plates 31 disposed on the supporting column 1 and disposed on the platform 2 and One or more second connecting plates 32 at corresponding positions of one connecting plate 31, and the first connecting plate 31 and the second connecting plate 32 are rotatably connected by a connecting shaft 33.
如图 1和图 2所示， 本实施例中， 第一连接板 31为一块， 固定设置在支撑立柱 1一侧 的中部， 第一连接板 31的形状为直角三角形， 优选为等腰直角三角形结构， 具有接触面 积大， 节省材料， 支撑立柱 1横放在平台 2上时不会形成干涉的优点。 第二连接板 32为两 块， 并相互平行固定设置在平台 2上， 第一连接板 31夹设于两块第二连接板 32之间， 第 一连接板 31和第二连接板 32上均设有通孔 34， 连接轴 33穿设于该通孔 34内。 连接轴 33可 为销轴， 也可为心轴， 本实施例中， 连接轴 33为销轴， 其结构简单， 安装方便、 稳固。 As shown in FIG. 1 and FIG. 2, in the embodiment, the first connecting plate 31 is a piece, and is fixedly disposed at a middle portion of the side of the supporting column 1. The first connecting plate 31 has a right-angled triangle shape, preferably an isosceles right triangle. The structure has a large contact area, saves material, and does not form an interference when the support column 1 is placed on the platform 2. The second connecting plate 32 is two blocks and is fixedly disposed on the platform 2 in parallel with each other. The first connecting plate 31 is sandwiched between the two second connecting plates 32, and the first connecting plate 31 and the second connecting plate 32 are respectively A through hole 34 is provided, and the connecting shaft 33 is bored in the through hole 34. The connecting shaft 33 can be a pin shaft or a mandrel. In the embodiment, the connecting shaft 33 is a pin shaft, and the structure is simple, and the installation is convenient and stable.
预定位方法： 按照预先设计好的定位尺寸（该定位尺寸要能使支撑立柱 1和平台 2连
接处的螺栓连接孔 41位置对正） ， 在支撑立柱 1与平台 2连接处的同侧上分别设置第一连 接板 31和第二连接板 32，通过连接轴 33预先将它们可转动地连接成一体。当不需安装时， 利用连接轴 33的转动， 将支撑立柱 1转动倒放在平台 2上。 需要安装时， 只需用起吊机将 支撑立柱 1吊起正立好， 支撑立柱 1和平台 2之间由于有连接轴 33的连接便不会分离， 支 撑立柱 1和平台 2上用于连接的螺栓连接孔 41的相对位置也不会再变动， 且可以自动对 准， 因此不用再重新人工摆放支撑立柱 1与平台 2的位置， 直接将连接螺栓 4插入支撑立 柱 1和平台 2的螺栓连接孔 41内， 拧紧连接螺栓 4即可安装固定好。 其安装方便快捷， 对 孔准确， 能省时、 省力、 提高工作效率。 Pre-positioning method: According to the pre-designed positioning size (the positioning size should be able to connect the support column 1 and the platform 2 The bolt connection holes 41 of the joint are aligned. The first connecting plate 31 and the second connecting plate 32 are respectively disposed on the same side of the joint of the supporting column 1 and the platform 2, and are rotatably connected in advance through the connecting shaft 33. In one. When no installation is required, the support column 1 is rotated and placed on the platform 2 by the rotation of the connecting shaft 33. When the installation is required, the support column 1 is simply erected by the hoisting machine, and the connection between the support column 1 and the platform 2 is not separated due to the connection of the connecting shaft 33, and the support column 1 and the platform 2 are connected for connection. The relative position of the bolt connection hole 41 does not change any more, and can be automatically aligned, so that the position of the support column 1 and the platform 2 need not be manually placed again, and the connection bolt 4 is directly inserted into the bolt connection of the support column 1 and the platform 2. In the hole 41, the connecting bolt 4 can be tightened and fixed. The installation is convenient and fast, and the hole is accurate, which can save time, labor and improve work efficiency.
如图 5所示， 本实用新型的混凝土搅拌系统， 包括搅拌站， 其是在现有搅拌站的支 撑立柱 1和平台 2上按照上述方法安装一本实用新型的预定位装置即可。 As shown in Fig. 5, the concrete mixing system of the present invention comprises a mixing station, which is to install a pre-positioning device of the utility model according to the above method on the supporting column 1 and the platform 2 of the existing mixing station.
以上所述仅是本实用新型的优选实施方式，本实用新型的保护范围并不仅局限于上 述实施例， 凡属于本实用新型思路下的技术方案均属于本实用新型的保护范围。 应当指 出， 对于本技术领域的普通技术人员来说， 在不脱离本实用新型原理前提下的若干改进 和润饰也应视为本实用新型的保护范围。
The above description is only a preferred embodiment of the present invention, and the scope of protection of the present invention is not limited to the above embodiments, and all the technical solutions under the idea of the present invention belong to the protection scope of the present invention. It should be noted that a number of improvements and modifications of the present invention without departing from the principles of the present invention are also considered to be within the scope of the present invention.
Claims
1、 一种用于搅拌站支撑立柱与平台连接的预定位装置， 其特征在于： 包括设置于 支撑立柱（1 )上一块以上的第一连接板（31 )和设置于平台 （2)上与第一连接板（31 ) 相对应位置处的一块以上第二连接板（32)， 所述第一连接板（31 )和第二连接板（32) 通过连接轴 （33) 可转动地连接。 A pre-positioning device for connecting a support column of a mixing station and a platform, comprising: a first connecting plate (31) disposed on the supporting column (1) and disposed on the platform (2); One or more second connecting plates (32) at corresponding positions of the first connecting plate (31), the first connecting plate (31) and the second connecting plate (32) are rotatably connected by a connecting shaft (33).
2、 根据权利要求 1所述的用于搅拌站支撑立柱与平台连接的预定位装置， 其特征 在于： 所述第一连接板（31 )为一块， 所述第二连接板（32)为两块， 并相互平行设置， 第一连接板 （31 ) 夹设于两块第二连接板 （32) 之间， 所述第一连接板 （31 )和第二连 接板 （32) 上均设有通孔 （34) ， 所述连接轴 （33) 穿设于所述通孔 （34) 内。 2. The pre-positioning device for connecting a support column of a mixing station and a platform according to claim 1, wherein: the first connecting plate (31) is one piece, and the second connecting plate (32) is two pieces. The blocks are disposed in parallel with each other, and the first connecting plate (31) is sandwiched between the two second connecting plates (32), and the first connecting plate (31) and the second connecting plate (32) are respectively disposed. The through hole (34), the connecting shaft (33) is disposed in the through hole (34).
3、 根据权利要求 2所述的用于搅拌站支撑立柱与平台连接的预定位装置， 其特征 在于： 所述第一连接板 （31 ) 与所述支撑立柱 （1 ) 固定连接， 所述第二连接板 （32) 与所述平台 （2) 固定连接。 The pre-positioning device for connecting the support column and the platform of the mixing station according to claim 2, wherein: the first connecting plate (31) is fixedly connected with the supporting column (1), the first The two connecting plates (32) are fixedly connected to the platform (2).
4、根据权利要求 1或 2或 3所述的用于搅拌站支撑立柱与平台连接的预定位装置， 其特征在于： 所述第一连接板 （31 ) 为等腰直角三角形结构。 A pre-positioning device for connecting a support column of a mixing station to a platform according to claim 1 or 2 or 3, wherein: said first connecting plate (31) is an isosceles right-angled triangular structure.
5、 根据权利要求 4所述的用于搅拌站支撑立柱与平台连接的预定位装置， 其特征 在于： 所述连接轴 （33) 为销轴或心轴。 5. A pre-positioning device for agitating station support columns connected to a platform according to claim 4, wherein: said connecting shaft (33) is a pin or a mandrel.
6、 一种混凝土搅拌系统， 包括搅拌站， 其特征在于： 所述搅拌站的支撑立柱 （1 ) 和平台 （2) 上设有权利要求 1〜5中任一项所述的预定位装置。 A concrete agitation system, comprising a mixing station, characterized in that: the support column (1) and the platform (2) of the mixing station are provided with the pre-positioning device according to any one of claims 1 to 5.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009203137814U CN201573285U (en) | 2009-10-30 | 2009-10-30 | Pre-position device used for connecting upright supporting post with platform in mixing plant and mixing system |
| CN200920313781.4 | 2009-10-30 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| WO2011050617A1 true WO2011050617A1 (en) | 2011-05-05 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/CN2010/074195 WO2011050617A1 (en) | 2009-10-30 | 2010-06-22 | Pre-positioning device for connecting support post and platform of mixing plant and mixing system using same |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN201573285U (en) |
| WO (1) | WO2011050617A1 (en) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2653836A1 (en) * | 1989-10-27 | 1991-05-03 | Lefur Jean Paul | System for assembling hollow sections and load-bearing structure obtained |
| CN2615321Y (en) * | 2003-04-08 | 2004-05-12 | 中国石化集团江汉石油管理局第四机械厂 | Pulling drill block |
| CN201190422Y (en) * | 2008-05-21 | 2009-02-04 | 中国建筑一局(集团)有限公司 | Ultra-heavy steel column rotating positioning apparatus |
| CN201262174Y (en) * | 2008-09-19 | 2009-06-24 | 何伟雄 | Pipe section bar connecting mechanism |
-
2009
- 2009-10-30 CN CN2009203137814U patent/CN201573285U/en not_active Expired - Fee Related
-
2010
- 2010-06-22 WO PCT/CN2010/074195 patent/WO2011050617A1/en active Application Filing
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2653836A1 (en) * | 1989-10-27 | 1991-05-03 | Lefur Jean Paul | System for assembling hollow sections and load-bearing structure obtained |
| CN2615321Y (en) * | 2003-04-08 | 2004-05-12 | 中国石化集团江汉石油管理局第四机械厂 | Pulling drill block |
| CN201190422Y (en) * | 2008-05-21 | 2009-02-04 | 中国建筑一局(集团)有限公司 | Ultra-heavy steel column rotating positioning apparatus |
| CN201262174Y (en) * | 2008-09-19 | 2009-06-24 | 何伟雄 | Pipe section bar connecting mechanism |
Also Published As
| Publication number | Publication date |
|---|---|
| CN201573285U (en) | 2010-09-08 |
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