CN1994614A - Machine for manufacturing structural part by reinforcing bar - Google Patents
Machine for manufacturing structural part by reinforcing bar Download PDFInfo
- Publication number
- CN1994614A CN1994614A CN 200610000369 CN200610000369A CN1994614A CN 1994614 A CN1994614 A CN 1994614A CN 200610000369 CN200610000369 CN 200610000369 CN 200610000369 A CN200610000369 A CN 200610000369A CN 1994614 A CN1994614 A CN 1994614A
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- reinforcement
- rotor
- guidance unit
- circular slab
- lengthwise movement
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Abstract
The invention relates to a machine used to produce strengthen bar, wherein at the longitudinal movement guider, there is first and second round plates; at the preset positions of first and second round plates, there are strengthen bar holders with lockers; the second round plate that relative to the holder has guide concave and guide hole; therefore, some bar ends will deflect from the ends of other bars, to improve the combination.
Description
Technical field
The present invention relates generally to the machine that uses a plurality of reinforcements (reinforcing bar) to make the cylindricality reinforced bar structural member, more specifically, the present invention relates to a kind of machine that is used to make such reinforced bar structural member, so that the end of some reinforcements of this reinforced bar structural member is from the end of all the other reinforcements skew predetermined length, thereby improve bond strength between the reinforced bar structural member that is engaged with each other.
Background technology
Be in bridge, one or more bridge piers to be set between abutment to known in those skilled in the art to support the truss of bridge.The load that this bridge pier is used for being applied on the bridge passes to support ground.In addition, bridge pier must have the structure that can be enough to bear other external force.
According to intended purposes, bridge pier can be divided into wooden bridge pier, brick bridge pier, stone bridge pier, concrete pier, reinforced concrete bridge pier and steel bridge pier.The main reinforced concrete bridge pier that uses.
In order to build this reinforced concrete bridge pier, before applying concrete, make the reinforced bar structural member of cylindrical shape by welding a plurality of reinforcements, to guarantee the intensity of reinforced concrete bridge pier to reinforced bar structural member.
To describe the process of making the cylindricality reinforced bar structural member below in detail.Reinforcement is arranged to have the cylindrical shape of predetermined diameter, thereby these reinforcements are spaced apart from each other with the angular separation of rule.Afterwards, in the position that is spaced apart from each other with regular spaces other reinforcement is wrapped in above-mentioned reinforcement around and welding thereon, thereby finish reinforced bar structural member.Yet, in this conventional art,, need many manpowers so make reinforced bar structural member, and also need plenty of time and cost because all above-mentioned steps are all manually carried out.
In recent years, in order to overcome that conventional art encounters problems and in the effort of paying, proposed a kind of machine that is used to make reinforced bar structural member.With reference to Fig. 1 this machine is described in detail below.As shown in Figure 1, traditional machine comprises frame body 1, reinforcement guidance unit 2, a plurality of reinforcement support unit 3, lengthwise movement guidance unit 4, welding muscle feeding unit 6 and lift unit 7.Frame body 1 forms the rectangular shape with predetermined length.Reinforcement guidance unit 2 comprises the fixed body 2a that vertically is installed in frame body 1 middle part and is located at the first rotor 2c of the first motor 2b that is connected to the pre-position that is located on the fixed body 2a on the fixed body 2a inner surface and by chain, thereby this first rotor 2c rotates at a predetermined velocity.Pass the first rotor 2c and be formed with reinforcement supported hole (not shown) along its edge, thereby a plurality of reinforcement 8 can pass each reinforcement supported hole.First side at the first rotor 2c is provided with a plurality of reinforcement support units 3.Each reinforcement support unit 3 all comprises guide rail 3e and a plurality of reinforcement support member 3b that is located on the frame body 1, and these reinforcement support members 3b radially is located on the Centered turning cylinder 3a with the first rotor 2c.Reinforcement support member 3b is spaced apart from each other with regular spaces.The roller 3c that rotates along guide rail 3e is located on the end of each reinforcement support member 3b.Lengthwise movement guidance unit 4 comprises the movable body 4a and the second rotor (not shown), movable body 4a is located at second side of the first rotor 2c and moves forwards or backwards by lengthwise movement motor (not shown), second rotor is located on the inner surface of movable body 4a and is connected to the second motor 4b of the pre-position that is located on the movable body 4a by chain, thereby second rotor rotates at a predetermined velocity.Lengthwise movement guidance unit 4 also comprises a plurality of reinforcement keeper 4e that are provided with along the edge of second rotor, thereby utilizes locking device (not shown, for example screw) that reinforcement 8 is fastened on the corresponding reinforcement keeper 4e.Welding muscle feeding unit 6 is located between reinforcement guidance unit 2 and the lengthwise movement guidance unit 4 with supply welding reinforcement.Lift unit 7 is located at the lower position of frame body 1 below reinforcement guidance unit 2 and lengthwise movement guidance unit 4.The reinforced bar structural member that this lift unit 7 is used for finishing rises to predetermined altitude, to allow easily to deliver the reinforced bar structural member of finishing.
In order to use traditional machine to make reinforced bar structural member, the staff supplies reinforcement 8 between the reinforcement support member 3b of reinforcement support unit 3, and makes the end of reinforcement 8 pass the reinforcement supported hole of the first rotor 2c simultaneously.Afterwards, the end of passing the reinforcement 8 of reinforcement supported hole is inserted among the corresponding reinforcement keeper 4e of lengthwise movement guidance unit 4 and is fastened firmly on it.
Then, make lengthwise movement guidance unit 4 along the preset distance that moves away from the direction of reinforcement guidance unit 2.Afterwards, when these two guidance units 2 and 4 are retained in its relevant position, lengthwise movement guidance unit 4 is rotated with identical speed with reinforcement guidance unit 2.Simultaneously, by the reinforcement feeding unit 6 between lengthwise movement guidance unit 4 and the reinforcement guidance unit 2 will weld reinforcement be wrapped in around the reinforcement 8 and welding thereon.Then, repeat said process, arrive the end of frame body 1 up to lengthwise movement guidance unit 4.
When lengthwise movement guidance unit 4 has arrived the end of frame body 1, remove the free end of reinforcement 8 from reinforcement guidance unit 2.At this moment, lift unit 7 promotes the reinforced bar structural member finished to allow this reinforced bar structural member of delivery such as crane.
Simultaneously, the opposed end of each reinforcement all has screw thread.Therefore, can utilize the reinforcement fastener that the plurality of strengthening ribs structural member is engaged with each other to form the length of expectation, this reinforcement fastener is bonded with each other the reinforcement end that faces with each other.
Yet, in traditional machine, as shown in Figure 1, because the end of all reinforcements 8 all is fastened to setting at grade (promptly, on second rotor of lengthwise movement guidance unit 4) reinforcement keeper 4e on, so reinforcement 8 termination on same vertical plane.Therefore, the reinforcement fastener that the end of two reinforced bar structural members is engaged with each other just is arranged on the same vertical plane.Therefore, there is the significantly reduced problem of bond strength between the reinforced bar structural member.
Summary of the invention
Therefore, the present invention considers that the problems referred to above that occur in the prior art make, and the object of the present invention is to provide a kind of machine that is used to make reinforced bar structural member, wherein in the lengthwise movement guidance unit, be provided with first circular slab and second circular slab, and utilize locking device reinforcement to be fastened on the reinforcement keeper that is located on described first circular slab and second circular slab, thereby the bond strength between the reinforced bar structural member that is engaged with each other has been improved from the end skew predetermined length of all the other reinforcements in the end of some reinforcements of reinforced bar structural member therefore.
To achieve these goals, the invention provides a kind of machine that is used to make reinforced bar structural member, wherein second rotor of lengthwise movement guidance unit comprises first circular slab and second circular slab, this second circular slab have a plurality of reinforcement bullports that run through its formation and with the spaced apart preset distance of described first circular slab, and on the pre-position of first circular slab and second circular slab with the corresponding position of described reinforcement bullport, all be provided with a plurality of reinforcement keepers that all have locking device.
Described machine also can be included in a plurality of reinforcement guide notch that form with the corresponding position of the reinforcement keeper of described first circular slab in second circular slab.
Description of drawings
From following detailed description in conjunction with the accompanying drawings, will clearer understanding be arranged to above-mentioned and other purpose of the present invention, feature and advantage, in the accompanying drawings:
Fig. 1 is the view that expression is used to make the conventional machines of reinforced bar structural member;
Fig. 2 according to the embodiment of the invention, be used to make the stereogram of critical component of the machine of reinforced bar structural member;
Fig. 3 is that expression uses machine according to the present invention to make the stereogram of the process of reinforced bar structural member; And
Fig. 4 is the amplification view of critical component of the machine of presentation graphs 3.
The specific embodiment
The preferred embodiment of the present invention will be described in detail below with reference to accompanying drawings.
Fig. 2 is according to the preferred embodiment of the invention, is used to make the stereogram of critical component of the machine of reinforced bar structural member.Fig. 3 is that expression uses machine of the present invention to make the stereogram of the process of reinforced bar structural member.Fig. 4 is the amplification view of critical component of the machine of Fig. 3.
As shown in drawings, the machine that is used to make reinforced bar structural member according to the preferred embodiment of the invention comprises frame body 11, reinforcement guidance unit 12, a plurality of reinforcement support unit 13, lengthwise movement guidance unit 14, welding muscle feeding unit (not shown) and lift unit 17.Frame body 11 forms the rectangular shape with predetermined length.Reinforcement guidance unit 12 comprises the fixed body 12a and the first rotor 12c, fixed body 12a vertically is installed in the middle part of frame body 11, and the first rotor 12c is located on the inner surface of this fixed body 12a and is connected to the first motor 12b of the pre-position that is located on the fixed body 12a by chain, thereby the rotor 12c that wins is rotated at a predetermined velocity.Pass the first rotor 12c and be formed with reinforcement supported hole 12d along its edge, thereby a plurality of reinforcement 18 passes corresponding reinforcement supported hole 12d.Described a plurality of reinforcement support unit 13 is located at first side of the first rotor 12c.Each reinforcement support unit 13 all comprises guide rail 13e and a plurality of reinforcement support member 13b that is located on the frame body 11, and these reinforcement support members 13b is on the Centered turning cylinder 13a that radially is located at the first rotor 12c.Reinforcement support member 13b is spaced apart from each other with regular spaces.Be located at the place, end of each reinforcement support member 13b along the roller 13c of guide rail 13e rotation.Lengthwise movement guidance unit 14 comprise second side that is located at the first rotor 12c and the movable body 14a that moves forwards or backwards by lengthwise movement motor (not shown) and the inner surface that is located at this movable body 14a on and be connected to the second rotor 14c of the second motor 14b of the pre-position that is located on the movable body 14a by chain, thereby the second rotor 14c is rotated with desired speed.Lengthwise movement guidance unit 14 also comprises a plurality of reinforcement keeper 14k, the 14k ' that is provided with along the edge of the second rotor 14c, thereby reinforcement 18 uses locking device 14d, 14d ' (for example, screw) to be fastened on corresponding reinforcement keeper 14k, the 14k '.Welding muscle feeding unit (not shown) is located between reinforcement guidance unit 12 and the lengthwise movement guidance unit 14 with supply welding reinforcement 15.Lift unit 17 is located at the lower position of frame body 11 below reinforcement guidance unit 12 and lengthwise movement guidance unit 14.The reinforced bar structural member that lift unit 17 is used for finishing rises to predetermined altitude, to allow easily to deliver the reinforced bar structural member of finishing.
In the present invention, the second rotor 14c of lengthwise movement guidance unit 14 comprises the first circular slab 14f and the second circular slab 14h.The first circular slab 14f is fastened on the second rotor 14c, thereby the first circular slab 14f rotates with the second rotor 14c.A plurality of connecting rod 14g are located on the first circular slab 14f at its first end place.The second circular slab 14h is fastened on the second end of connecting rod 14g by welding, the preset distance thereby the first circular slab 14f and the second circular slab 14h are spaced apart from each other.
In addition, reinforcement keeper 14k that is spaced apart from each other with the angular separation of rule and 14k ' are located at the pre-position on the first circular slab 14f and the second circular slab 14h respectively by welding.Locking device 14d and 14d ' (for example, screw) are located at respectively among reinforcement keeper 14k and the 14k ', thereby utilize locking device 14d and 14d ' that the end of reinforcement 18 is fastened firmly on reinforcement keeper 14 and the 14k '.In addition, in the position that corresponds respectively to reinforcement keeper 14k and 14k ', pass the second circular slab 14h and be formed with reinforcement guide notch 14j and reinforcement bullport 14j '.
Below the operation that has the machine of said structure according to of the present invention will be described.
At first, the staff supplies reinforcement 18 between the reinforcement support member 13b of reinforcement support unit 13, makes the end of reinforcement 18 pass the reinforcement supported hole 12d of the first rotor 12c simultaneously.Afterwards, the end with reinforcement 18 is directed to lengthwise movement guidance unit 14.Here, the end of reinforcement 18 is inserted into the locking device 14d that also use is relevant among the reinforcement keeper 14k of lengthwise movement guidance unit 14 and is fastened on it after passing relevant reinforcement guide notch 14j.At this moment, as shown in Figure 4, locking device 14d is fastened, thereby the predetermined portions (the threaded portion on being formed on reinforcement 18 ends) of the inner of locking device 14d extruding reinforcement 18 prevents that thus threaded portion from damaging.
Afterwards, the reinforcement 18 that another is adjacent passes the adjacent reinforcement bullport 14j ' of the second circular slab 14h, and the locking device 14d ' that this reinforcement 18 is inserted among the relevant reinforcement keeper 14k ' and use is correlated with is fastened on it, and this reinforcement keeper 14k ' is located at the different position with the first circular slab 14f.In the same way, remaining reinforcement 18 is fastened on reinforcement keeper 14k and the 14k '.Like this, reinforcement 18 just is configured to such shape, and promptly the end of some of them reinforcement 18 is from the end skew of other reinforcement 18.
Then, make lengthwise movement guidance unit 14 along the preset distance that moves away from the direction of reinforcement guidance unit 12.Afterwards, when lengthwise movement guidance unit 14 and reinforcement guidance unit 12 remain on corresponding position, these two guidance units 12 are rotated with identical speed with 14.Simultaneously, by the welding muscle feeding unit between lengthwise movement guidance unit 14 and reinforcement guidance unit 12, will weld reinforcement 15 and be wrapped in around the reinforcement 18 and and be welded on the reinforcement 18 it.Afterwards, repeat said process arrives frame body 11 up to lengthwise movement guidance unit 14 end.
In addition, when lengthwise movement guidance unit 14 has arrived the end of frame body 11, remove the free end of reinforcement 18 from reinforcement guidance unit 12.At this moment, lift unit 17 promotes the reinforced bar structural member finished to allow delivery reinforced bar structural member such as crane.
Simultaneously, because on each opposed end of reinforcement 18, all be formed with threaded portion, so can utilize the reinforcement fastener that the plurality of strengthening ribs structural member is engaged with each other to form the length of expectation, this fastener makes the reinforcement end that faces with each other be engaged with each other.
Therefore, in the present invention, the reinforcement fastener that the reinforcement opposed end of adjacent reinforced bar structural member is engaged with each other is disposed on the plane that differs from one another, thereby prevents that stress from concentrating on the reinforcement fastener, has therefore improved the bond strength between the adjacent reinforced bar structural member.
As mentioned above, the invention provides a kind of machine that is used to make reinforced bar structural member, wherein in the lengthwise movement guidance unit, be provided with first circular slab and second circular slab, and use locking device reinforcement to be fastened on the reinforcement keeper that is arranged at first circular slab and second circular slab, thereby the bond strength between the reinforced bar structural member that is engaged with each other has been improved from the end skew preset distance of all the other reinforcements in the end of some reinforcements of reinforced bar structural member therefore.
Although for illustration purpose discloses the preferred embodiments of the present invention, one skilled in the art will understand that under situation about not breaking away from scope and spirit of the present invention disclosed in the accompanying claims, can carry out various modifications, augment and replace.
Claims (2)
1, a kind of machine that is used to make reinforced bar structural member comprises:
Frame body, it forms the rectangular shape with predetermined length;
The reinforcement guidance unit comprises
Fixed body, it vertically is installed in the middle part of described frame body; With
First rotor, it is located on the inner surface of described fixed body and is connected to first motor of the pre-position that is located on this fixed body by chain, thereby described first rotor rotates at a predetermined velocity, and pass described first rotor and be formed with a plurality of reinforcement supported holes, thereby a plurality of reinforcement passes corresponding reinforcement supported hole along the edge of this first rotor;
A plurality of reinforcement support units, it is located at first side of described first rotor, and each described reinforcement support unit all comprises:
Guide rail, it is located on the described frame body; With
A plurality of reinforcement support members, it is along radially being located on the turning cylinder that is provided with the center-aligned of described first rotor, and the spacing with rule is spaced apart from each other, and all is provided with roller on the end of each reinforcement support member, and this roller rotates along described guide rail;
The lengthwise movement guidance unit comprises:
Movable body, it is located at second side of described first rotor, and moves forwards or backwards by the lengthwise movement motor;
Second rotor, it is located on the inner surface of described movable body and is connected to second motor of the pre-position that is located on this movable body by chain, thus second rotor rotates at a predetermined velocity; With
A plurality of reinforcement keepers, it is along the edge setting of described second rotor, thus the use locking device is fastened to described reinforcement on the corresponding reinforcement keeper;
Welding muscle feeding unit, it is located between described reinforcement guidance unit and the described lengthwise movement guidance unit with supply welding reinforcement; And
Lift unit, it is located at the lower position of described frame body below described reinforcement guidance unit and described lengthwise movement guidance unit, and the reinforced bar structural member of finishing is risen to the reinforced bar structural member of predetermined altitude to allow delivery to finish, wherein
Second rotor of described lengthwise movement guidance unit comprises: first circular slab; And second circular slab, its have a plurality of reinforcement bullports that run through its formation and with the spaced apart preset distance of described first circular slab, and the described a plurality of reinforcement keepers that all have locking device both had been located at the pre-position of described first circular slab, also were located on described second circular slab and the corresponding position of described reinforcement bullport.
2, machine according to claim 1 is characterized in that, also comprises:
A plurality of reinforcement guide notch, it is formed in described second circular slab corresponding position of reinforcement keeper with described first circular slab.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2006100003698A CN100398228C (en) | 2006-01-06 | 2006-01-06 | Machine for manufacturing structural part by reinforcing bar |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2006100003698A CN100398228C (en) | 2006-01-06 | 2006-01-06 | Machine for manufacturing structural part by reinforcing bar |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1994614A true CN1994614A (en) | 2007-07-11 |
| CN100398228C CN100398228C (en) | 2008-07-02 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2006100003698A Expired - Fee Related CN100398228C (en) | 2006-01-06 | 2006-01-06 | Machine for manufacturing structural part by reinforcing bar |
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| Country | Link |
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| CN (1) | CN100398228C (en) |
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| CN105014248A (en) * | 2015-07-16 | 2015-11-04 | 朱玉兵 | Welding equipment for pile foundation reinforcement cage for road and bridge construction |
| CN105033480A (en) * | 2015-07-29 | 2015-11-11 | 朱玉兵 | Support pillar reinforcement cage welder for municipal engineering |
| CN105033519A (en) * | 2015-07-29 | 2015-11-11 | 朱玉兵 | Reinforcement cage welding device used for road and bridge bearing column and facilitating unloading of reinforcement cage |
| CN105033483A (en) * | 2015-07-29 | 2015-11-11 | 朱玉兵 | Welding device for pile foundation reinforcement cage in municipal engineering |
| CN105575549A (en) * | 2015-12-15 | 2016-05-11 | 爱彼思（苏州）自动化科技有限公司 | Cylindrical multilayer cable manufacturing method |
| CN105750458A (en) * | 2016-04-06 | 2016-07-13 | 中国十七冶集团有限公司 | Mounting method of pile foundation steel bar cage efficient maker |
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| CN106734771A (en) * | 2016-12-29 | 2017-05-31 | 衢州市灵杰液压机械制造有限公司 | A kind of weldering cage bar of non-prestressed electric pole cage muscle, winding ring muscle all-in-one and the method that electric pole cage muscle is prepared using the all-in-one |
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| CN111283039A (en) * | 2020-02-11 | 2020-06-16 | 王利民 | Ring reinforcing steel bar forming equipment for supporting long column based on bridge construction |
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| AU2867377A (en) * | 1976-09-22 | 1979-03-15 | Rocla Concrete Pipes Ltd | Tubular welded wire cage |
| CN1085141A (en) * | 1992-09-30 | 1994-04-13 | 陈文祥 | Steel reinforcement cage preparation method and reinforcing bar are adjusted rod and continued access device |
| JP2001150078A (en) * | 1999-11-30 | 2001-06-05 | High Frequency Heattreat Co Ltd | Manufacturing method and facility for cylindrical reinforcement cage with spiral reinforcement |
| JP3580265B2 (en) * | 2001-04-17 | 2004-10-20 | 鹿島建設株式会社 | Vertical assembly method for reinforced concrete columns |
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- 2006-01-06 CN CNB2006100003698A patent/CN100398228C/en not_active Expired - Fee Related
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| CN105014248A (en) * | 2015-07-16 | 2015-11-04 | 朱玉兵 | Welding equipment for pile foundation reinforcement cage for road and bridge construction |
| CN106363311A (en) * | 2015-07-29 | 2017-02-01 | 朱玉兵 | Reinforcement cage welding machine for road and bridge construction |
| CN105033480A (en) * | 2015-07-29 | 2015-11-11 | 朱玉兵 | Support pillar reinforcement cage welder for municipal engineering |
| CN105033519A (en) * | 2015-07-29 | 2015-11-11 | 朱玉兵 | Reinforcement cage welding device used for road and bridge bearing column and facilitating unloading of reinforcement cage |
| CN105033483A (en) * | 2015-07-29 | 2015-11-11 | 朱玉兵 | Welding device for pile foundation reinforcement cage in municipal engineering |
| CN105817813A (en) * | 2015-07-29 | 2016-08-03 | 朱玉兵 | Novel welding device |
| CN105904124A (en) * | 2015-07-29 | 2016-08-31 | 朱玉兵 | Welding machine capable of achieving convenient unloading of reinforcing cage and used for building construction |
| CN105033519B (en) * | 2015-07-29 | 2016-09-21 | 江俞 | It is easy to the road and bridge load-bearing pillar steel reinforcement cage welding equipment of steel reinforcement cage unloading |
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| CN105575549A (en) * | 2015-12-15 | 2016-05-11 | 爱彼思（苏州）自动化科技有限公司 | Cylindrical multilayer cable manufacturing method |
| CN105750458A (en) * | 2016-04-06 | 2016-07-13 | 中国十七冶集团有限公司 | Mounting method of pile foundation steel bar cage efficient maker |
| CN105750458B (en) * | 2016-04-06 | 2018-05-11 | 中国十七冶集团有限公司 | A kind of method using efficient maker installation pile foundation steel bar cage |
| CN106287007A (en) * | 2016-10-13 | 2017-01-04 | 江苏云联管道有限公司 | A kind of steel wire mesh frame molding special-shaped support mandrel |
| CN106287007B (en) * | 2016-10-13 | 2018-05-18 | 江苏云联管道有限公司 | A kind of steel wire mesh frame shaping special-shaped support mandrel |
| CN106734771A (en) * | 2016-12-29 | 2017-05-31 | 衢州市灵杰液压机械制造有限公司 | A kind of weldering cage bar of non-prestressed electric pole cage muscle, winding ring muscle all-in-one and the method that electric pole cage muscle is prepared using the all-in-one |
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| CN107639188A (en) * | 2017-10-24 | 2018-01-30 | 成都明杰科技有限公司 | A kind of clamp assemblies prefabricated for stake holes ground steel reinforcement cage |
| CN107803452A (en) * | 2017-10-24 | 2018-03-16 | 成都明杰科技有限公司 | A kind of prefabricated application process with clamp assemblies of building lot steel reinforcement cage |
| CN111037141A (en) * | 2020-01-17 | 2020-04-21 | 刘争 | Steel reinforcement cage welding equipment for road and bridge |
| CN111283039A (en) * | 2020-02-11 | 2020-06-16 | 王利民 | Ring reinforcing steel bar forming equipment for supporting long column based on bridge construction |
| CN113547050A (en) * | 2021-06-28 | 2021-10-26 | 广东港重绿建科技有限公司 | A steel reinforcement cage welding set for building pier stud |
| CN113547050B (en) * | 2021-06-28 | 2023-02-28 | 广东港重绿建科技有限公司 | A steel reinforcement cage welding set for building pier stud |
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|---|---|
| CN100398228C (en) | 2008-07-02 |
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