CN113622649A - Cross node fixer for external scaffold cross brace - Google Patents
Cross node fixer for external scaffold cross brace Download PDFInfo
- Publication number
- CN113622649A CN113622649A CN202111029866.1A CN202111029866A CN113622649A CN 113622649 A CN113622649 A CN 113622649A CN 202111029866 A CN202111029866 A CN 202111029866A CN 113622649 A CN113622649 A CN 113622649A
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- China
- Prior art keywords
- limiting block
- connecting part
- scaffold
- fixedly connected
- sleeve
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- 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.)
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Links
- 238000007789 sealing Methods 0.000 claims description 5
- 229910000831 Steel Inorganic materials 0.000 description 11
- 239000010959 steel Substances 0.000 description 11
- 238000010276 construction Methods 0.000 description 6
- 238000009434 installation Methods 0.000 description 5
- 238000000034 method Methods 0.000 description 4
- 238000003466 welding Methods 0.000 description 4
- 230000007547 defect Effects 0.000 description 2
- 239000007787 solid Substances 0.000 description 2
- 230000004323 axial length Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
Images
Classifications
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04G—SCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
- E04G7/00—Connections between parts of the scaffold
- E04G7/02—Connections between parts of the scaffold with separate coupling elements
- E04G7/06—Stiff scaffolding clamps for connecting scaffold members of common shape
- E04G7/12—Clamps or clips for crossing members
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04G—SCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
- E04G7/00—Connections between parts of the scaffold
- E04G7/02—Connections between parts of the scaffold with separate coupling elements
- E04G7/06—Stiff scaffolding clamps for connecting scaffold members of common shape
- E04G7/12—Clamps or clips for crossing members
- E04G7/14—Clamps or clips for crossing members for clamping the members independently
- E04G7/16—Clamps or clips for crossing members for clamping the members independently of which the clamping parts for the different members are rotatable with respect to one another
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- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Mechanical Engineering (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Joining Of Building Structures In Genera (AREA)
Abstract
The invention relates to a cross node fixer for a cross brace of an external scaffold, which comprises a first connecting part and a second connecting part, wherein the first connecting part and the second connecting part are relatively rotated and mutually connected; the first connecting part is fixed with the first scaffold tube, and the second connecting part is fixed with the second scaffold tube; the rotary locking mechanism is arranged between the first connecting part and the second connecting part and limits the rotating angle of the first connecting part relative to the second connecting part according to the design included angle of the first scaffold tube and the second scaffold tube.
Description
Technical Field
The invention relates to the technical field of external scaffold cross braces, in particular to a cross node fixer for external scaffold cross braces.
Background
The existing stage of external scaffold cross bracing construction is mainly based on the traditional steel pipe frame. The outer scaffold cross brace is mainly arranged on the side wall of the vertical face of the outer scaffold. When the external scaffold is used for bridging facilities, the external scaffold is firstly built to a certain height, then the bridging is installed, and the external scaffold is built to the design height according to the construction process. The existing method for fixing the bridging connection node of the external scaffold mainly adopts a fastener to hold the external scaffold to form a whole with the external scaffold, and has the defects that the length of a steel pipe is not fully reduced at will when the bridging is arranged, so that part of the steel pipe head is contracted on the fixed fastener, the precision of the bridging length is low, and the safety performance cannot meet the standard requirement.
The prior art has the following problems: (1) adopt steel pipe fastener to tie up the bridging fixed mode on outer scaffold, because there is great error in artifical locking fastener, cause fastener nut smooth silk or torque system not in place easily, especially can not guarantee bridging and outer scaffold and closely combine, cause outer scaffold bridging can't form wholly with outer scaffold, can't guarantee outer scaffold's factor of safety requirement. (2) Adopt steel pipe overlap joint to connect for outer scaffold frame bridging fixed mode, also have the shortcoming with the fixed mode that forms outer scaffold frame longitudinal connection of steel pipe overlap joint, if adopt steel pipe overlap joint mode, can appear that steel pipe overlap joint length can not satisfy the holistic factor of safety condition of outer scaffold frame according to the unsatisfied standard requirement when artifical installation bridging, bring very big potential safety hazard for outer scaffold frame installation.
Disclosure of Invention
The invention aims to solve the defects in the prior art, and provides an external scaffold cross brace node fixer based on an additional traditional construction process.
The invention solves the problems and adopts the technical scheme that:
a cross node fixer for external scaffold cross bracing comprises a first connecting part and a second connecting part, wherein the first connecting part and the second connecting part are relatively rotated and mutually connected; the first connecting part is fixed with the first scaffold tube, and the second connecting part is fixed with the second scaffold tube; and a rotation locking mechanism is further arranged between the first connecting part and the second connecting part, and the rotation locking mechanism limits the rotation angle of the first connecting part relative to the second connecting part according to the design included angle of the first scaffold tube and the second scaffold tube.
Compared with the prior art, the invention adopting the technical scheme has the beneficial effects that:
the invention ensures the installation precision of the connecting node of the cross brace, reduces construction errors and improves the safety of the external scaffold.
Preferably, the further technical scheme of the invention is as follows:
the rotary locking mechanism comprises a first limiting block and a second limiting block which extend and widen in the radial direction, and the distance between the second limiting block and the first limiting block is 60 degrees; the third limiting block extends between the first limiting block and the second limiting block; the third limiting block, the first limiting block and the second limiting block are positioned on the same rotating circumference; the first limiting block and the second limiting block are fixedly connected with the first connecting part or the second connecting part, and the third limiting block is fixedly connected with the second connecting part or the first connecting part. The rotary locking structure can accurately fix the included angle of the scaffold tube and ensure that all included angles of the shear braces are uniform.
The second connecting part is a sleeve, and the first connecting part is an anchor rod; one end of the sleeve is fixedly connected with the second scaffold tube, and the other end of the sleeve is provided with a sealing sheet which is provided with a through hole; the shaft end of the anchor rod penetrates through the through hole to be installed in the sleeve, and the other end of the anchor rod is fixedly connected with the first scaffold tube. The structure connects the two scaffold tubes movably through a simple anchor rod.
The shaft end of the anchor rod loading sleeve is provided with a ball bearing; the inner ring of the ball bearing is fixedly connected with the anchor rod, and the outer ring of the ball bearing is fixedly connected with the sleeve. The ball bearing with the structure can ensure that the node rotates more labor-saving and smooth.
The first limiting block and the second limiting block are fixedly connected with an outer ring of the ball bearing; the third limiting block is fixedly connected with the anchor rod.
The first limiting block and the second limiting block are wedge-shaped; one side of the third limiting block is a plane in surface contact with the first limiting block, and the other side of the third limiting block is a plane in surface contact with the second limiting block. The stop force of the surface contact structure is more stable, the requirement on the setting accuracy of the axial position of the limit block is low, and the surface contact structure is easy to manufacture and install.
Drawings
FIG. 1 is a schematic structural diagram of an embodiment of the present invention;
FIG. 2 is an exploded view of the present invention;
FIG. 3 is a schematic cross-sectional view of the present invention;
FIG. 4 is a cross-sectional view taken along line A-A of FIG. 3;
FIG. 5 is a schematic end view of the present invention;
fig. 6 is a schematic view of the installation structure of the present invention.
In the figure: 1. a sleeve; 2. a ball bearing; 2-1, outer ring; 2-2, inner ring; 3. an anchor rod; 4. a first stopper; 5. a second limiting block; 6. a third limiting block; 7. a first scaffold tube; 8. a second scaffold tube.
Detailed Description
The invention will be further illustrated by the following examples, which are intended only for a better understanding of the present invention and therefore do not limit the scope of the invention.
When the external scaffold cross brace is constructed by the traditional process, the transverse diagonal braces are arranged between the same sections and are continuously arranged in a zigzag manner from the bottom to the top layer. Both ends of the linear and open double-row scaffolds are required to be provided with transverse inclined struts, and the middle of the linear and open double-row scaffolds is preferably provided with one strut at intervals of 6. The closed double-row scaffold with the height of less than 24m can be provided with no transverse diagonal bracing, and the closed scaffold with the height of more than 24m is provided with transverse diagonal bracing at the corners and one path at intervals of 6 spans in the middle.
The invention provides a structure for connecting and fixing cross nodes of scissor-arm scaffold tubes. According to the invention, the outer scaffold cross braces are fixedly connected and positioned, so that the overlapping length and the positioning accuracy of the outer scaffold cross braces on the outer scaffold are ensured, and the safety of the outer scaffold is improved.
Referring to fig. 1, an external scaffolding cross-bracing node fixture includes a first connection part and a second connection part, which are relatively and mutually connected; the first connecting part is fixed with the first scaffold tube 7, and the second connecting part is fixed with the second scaffold tube 8; and a rotation locking mechanism is further arranged between the first connecting part and the second connecting part, and the rotation locking mechanism limits the rotation angle of the first connecting part relative to the second connecting part according to the design included angle of the first scaffold tube 7 and the second scaffold tube 8.
Referring to fig. 1 to 3, the second connecting portion is a sleeve 1, and the first connecting portion is a bolt 3. One end of the sleeve 1 is fixedly connected with the second scaffold tube 8, and the other end is provided with a sealing sheet; the sealing sheet is provided with a through hole, the shaft end of the anchor rod 3 penetrates through the through hole to be installed in the sleeve 1, and the other end of the anchor rod 3 is fixedly connected with the first scaffold tube 7. In order to ensure that the mutual rotation of the anchor rod 3 and the sleeve 1 is smoother and the operation is more labor-saving, the invention arranges the ball bearing 2 between the sleeve 1 and the shaft end of the anchor rod 3, in particular, the ball bearing 2 is arranged at the shaft end of the anchor rod 3 which is arranged in the sleeve 1; an inner ring 2-2 of the ball bearing 2 is fixedly connected with the anchor rod 3, and an outer ring 2-1 is fixedly connected with the sleeve 1.
Referring to fig. 3 to 5, the rotation locking mechanism of the present invention includes a first stopper 4 and a second stopper 5 that extend and widen in a radial direction, and an included angle of 60 degrees is formed between the second stopper 5 and the first stopper 4; the third limiting block 6 extends between the first limiting block 4 and the second limiting block 5; the third limiting block 6, the first limiting block 4 and the second limiting block 5 are located on the same rotation circle. The first limiting block 4 and the second limiting block 5 are fixedly connected with the first connecting part or the second connecting part, and the third limiting block 6 is fixedly connected with the second connecting part or the first connecting part. The third stopper 6 forms a matched clamping structure with the first and second stoppers, when the third stopper 6 contacts with the first stopper 4, the first scaffold tube 7 is parallel to the second scaffold tube 8, and when the third stopper 6 contacts with the second stopper 5, the first scaffold tube 7 and the second scaffold tube 8 form a relative included angle. The angle between the first limiting block 4 and the second limiting block 5 is the fixed included angle designed by the two scaffold tubes of the cross-bracing structure.
The first stopper 4 and the second stopper 5 are fixedly connected to the first connecting portion, and the third stopper 6 is fixedly connected to the second connecting portion, or vice versa. According to the invention, the first limiting block 4 and the second limiting block 5 are fixedly connected with the outer ring 2-1 of the ball bearing 2, namely, the first limiting block and the second limiting block are equivalently fixed with the sleeve 1 and the second scaffold tube 8 into a whole. The third limiting block 6 is fixedly connected with the anchor rod 3, namely, is equal to a structure which is integrally fixed with the inner ring 2-2 and the first scaffold tube 7.
The rotary locking structure can accurately fix the included angle of the scaffold tube and ensure that all included angles of the shear braces are uniform.
The larger the axial length of the three limit blocks is, the easier the three limit blocks form a stop surface when being installed. Therefore, in order to ensure that the third limiting block 6 can form a butting surface with the first limiting block 4 and the second limiting block 5 when the anchor rod 3 rotates, the radial and axial directions of the limiting blocks are increased. Specifically, the first limiting block 4 and the second limiting block 5 are wedge-shaped; one side of the third limiting block 6 is a plane in surface contact with the first limiting block 4, and the other side of the third limiting block is a plane in surface contact with the second limiting block 5. The stop force of the surface contact structure is more stable, the radial direction and the axial direction of the limiting block are increased, and the requirement on installation precision is low. The problem that the stop cannot be realized due to dislocation in rotation is avoided.
The fixer is used for fixing the cross joint of the scissor-arm pipe during the construction of the external scaffold. Ball bearing 2 adopts path ball bearing, 2 inner ring diameters of ball bearing and 3 tight fits of stock, 2 outer ring diameters of ball bearing and sleeve 1 tight fits. Still be equipped with welding disc 9 between ball bearing and the mounting, this welding disc 9 is as an organic whole with the welding of stock 3, and the length of welding disc and ball bearing 2 equals sleeve length, avoids the stock axial float. The length of the anchor rod 3 should not be too large, and the part of the anchor rod which is generally outside the sealing sheet is 50mm to 80mm enough to be welded with the scaffold tube.
Referring to fig. 6, each length of the scissor-bracing scaffold tube is one meter, and the fixator of the present invention is disposed at the midpoint of the scaffold tube. The scaffold tube of the scissor support is designed into a steel tube with a solid middle part and hollow two sides. The solid portion may be provided with mounting slots to receive the sleeve or the end of the bolt.
When the scaffold tube is connected and installed through the scissors braces, the end part of the scaffold tube needs to be extended or connected, and then a corresponding connecting structure needs to be designed at the end part of the scaffold tube. The middle of the invention is provided with a scaffold tube of the bearing fixer, two ends of the scaffold tube are provided with pin holes, and the scaffold tube are fixed by a movable pin clamping piece. The pin catches may be 50 x 10 gauge round pins.
And positioning the scissor supports on the installed external scaffold, and temporarily fixing the scissor support scaffold tubes. And installing the cross brace connecting piece at the top end of the steel pipe, and inserting the other steel pipe into the cross brace connecting piece. The angle position of the cross brace connecting piece is adjusted to meet the design requirement, so that the cross brace is accurately positioned along the lapping length direction of the outer scaffold.
The invention ensures the lapping precision of the external scaffold cross braces, reduces construction errors and improves the working efficiency and safety.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the scope of the present invention, which is defined in the appended claims.
Claims (6)
1. The utility model provides an outer scaffold frame bridging cross node fixer which characterized in that: the first connecting part is fixed with the first scaffold tube (7), and the second connecting part is fixed with the second scaffold tube (8); the first connecting part and the second connecting part are relatively rotated and mutually connected; and a rotation locking mechanism is further arranged between the first connecting part and the second connecting part, and the rotation locking mechanism limits the rotation angle of the first connecting part relative to the second connecting part according to the design included angle of the first scaffold tube (7) and the second scaffold tube (8).
2. The external scaffolding scissors bracing cross node fixture of claim 1, wherein: the rotary locking mechanism comprises a first limiting block (4) and a second limiting block (5) which extend and widen in the radial direction, and the second limiting block (5) and the first limiting block (4) are separated by an included angle of 60 degrees; the third limiting block (6) extends between the first limiting block (4) and the second limiting block (5); the third limiting block, the first limiting block (4) and the second limiting block (5) are positioned on the same rotating circumference; the first limiting block and the second limiting block are fixedly connected with the first connecting part or the second connecting part, and the third limiting block is fixedly connected with the second connecting part or the first connecting part.
3. The external scaffolding scissors bracing cross node fixture of claim 1 or 2, wherein: the second connecting part is a sleeve (1), and the first connecting part is an anchor rod (3); one end of the sleeve (1) is fixedly connected with the second scaffold tube (8), and the other end of the sleeve is provided with a sealing sheet which is provided with a through hole; the shaft end of the anchor rod (3) penetrates through the through hole to be installed in the sleeve (1), and the other end of the anchor rod is fixedly connected with the first scaffold tube (7).
4. The external scaffolding scissors bracing cross node fixture of claim 3, wherein: the shaft end of the anchor rod (3) which is arranged in the sleeve is provided with a ball bearing (2); an inner ring (2-2) of the ball bearing (2) is fixedly connected with the anchor rod (3), and an outer ring (2-1) is fixedly connected with the sleeve (1).
5. The external scaffolding scissors bracing cross node anchor of claim 4, wherein: the first limiting block (4) and the second limiting block (5) are fixedly connected with an outer ring (2-1) of the ball bearing (2); the third limiting block (6) is fixedly connected with the anchor rod (3).
6. The external scaffolding scissors bracing cross node fixture of claim 2 or 5, wherein: the first limiting block (4) and the second limiting block (5) are wedge-shaped; one side of the third limiting block (6) is a plane in surface contact with the first limiting block (4), and the other side of the third limiting block is a plane in surface contact with the second limiting block (5).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111029866.1A CN113622649A (en) | 2021-09-03 | 2021-09-03 | Cross node fixer for external scaffold cross brace |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111029866.1A CN113622649A (en) | 2021-09-03 | 2021-09-03 | Cross node fixer for external scaffold cross brace |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN113622649A true CN113622649A (en) | 2021-11-09 |
Family
ID=78388955
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111029866.1A Pending CN113622649A (en) | 2021-09-03 | 2021-09-03 | Cross node fixer for external scaffold cross brace |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN113622649A (en) |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH1122185A (en) * | 1997-07-03 | 1999-01-26 | Ube Nitto Kasei Co Ltd | Angle adjusting jig of cross joint |
| CN204452219U (en) * | 2015-03-13 | 2015-07-08 | 宁波精成车业有限公司 | For the stop gear of automobile rearview mirror folder |
| CN207513143U (en) * | 2017-11-14 | 2018-06-19 | 温州市城乡建设职工中等专业学校 | A kind of scissors support structure in pulley-clip scaffold system |
| CN207620353U (en) * | 2017-11-25 | 2018-07-17 | 天津锦丰盛泰科技集团有限公司 | A kind of universal scaffold |
| CN209837658U (en) * | 2019-03-15 | 2019-12-24 | 广西建工集团第一建筑工程有限责任公司 | Special fastener for outer rod of cross brace of fastener type steel pipe scaffold |
| CN209855214U (en) * | 2019-04-30 | 2019-12-27 | 中冶建工集团有限公司 | Scissor-bracing steel pipe connector |
| CN213062895U (en) * | 2020-05-29 | 2021-04-27 | 中天建设集团有限公司 | Lengthened rotary fastener |
-
2021
- 2021-09-03 CN CN202111029866.1A patent/CN113622649A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH1122185A (en) * | 1997-07-03 | 1999-01-26 | Ube Nitto Kasei Co Ltd | Angle adjusting jig of cross joint |
| CN204452219U (en) * | 2015-03-13 | 2015-07-08 | 宁波精成车业有限公司 | For the stop gear of automobile rearview mirror folder |
| CN207513143U (en) * | 2017-11-14 | 2018-06-19 | 温州市城乡建设职工中等专业学校 | A kind of scissors support structure in pulley-clip scaffold system |
| CN207620353U (en) * | 2017-11-25 | 2018-07-17 | 天津锦丰盛泰科技集团有限公司 | A kind of universal scaffold |
| CN209837658U (en) * | 2019-03-15 | 2019-12-24 | 广西建工集团第一建筑工程有限责任公司 | Special fastener for outer rod of cross brace of fastener type steel pipe scaffold |
| CN209855214U (en) * | 2019-04-30 | 2019-12-27 | 中冶建工集团有限公司 | Scissor-bracing steel pipe connector |
| CN213062895U (en) * | 2020-05-29 | 2021-04-27 | 中天建设集团有限公司 | Lengthened rotary fastener |
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| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20211109 |
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| RJ01 | Rejection of invention patent application after publication |