CN102444273A - Connecting member of socket and spigot type tenon-mortise self-locked steel pipe scaffold - Google Patents
Connecting member of socket and spigot type tenon-mortise self-locked steel pipe scaffold Download PDFInfo
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- CN102444273A CN102444273A CN2011102778536A CN201110277853A CN102444273A CN 102444273 A CN102444273 A CN 102444273A CN 2011102778536 A CN2011102778536 A CN 2011102778536A CN 201110277853 A CN201110277853 A CN 201110277853A CN 102444273 A CN102444273 A CN 102444273A
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- cross bar
- tenon
- socket
- earthly branches
- twelve earthly
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Abstract
The invention relates to a connecting member of a socket and spigot type tenon-mortise self-locked steel pipe scaffold, which can be used for solving the problems of being easy for losing a buckling member and poor in stability and bearing capability. In the technical proposal disclosed by the invention, the connecting member comprises a transverse rod combination body, an upright pipe and an upright rod rabbet socket; the transverse rod combination body is formed by combining a sliding bolt and a transverse rod mortise groove together through a transverse rod; one end of the sliding bolt passes through the transverse rod mortise groove; the other end of the sliding bolt passes through a through hole of the transverse rod; the front end of the transverse rod and the transverse rod mortise groove are fixed together; the upright pipe is fixed in the upright rod rabbet socket; the four sides of the upright rod rabbet socket are sleeved with the transverse rod mortise groove; and the transverse rod combination body is respectively connected with a horizontal inclined rod combination body and an upright inclined rod. The connecting member disclosed by the invention has the self-locking function and has the advantages of being simple in structure, firm for connection, good in integral stability, high in bearing force, quick for assembly and disassembly and convenient for use. Components are prevented from being lost. The repetitive use rate is high. The application cost is reduced.
Description
Technical field
The present invention relates to scaffold, particularly a kind of spigot-and-socket tenon fourth of the twelve Earthly Branches self-locking steel pipe scaffold connector.
Background technology
The traditional fastener type steel pipe scaffold of many uses is connected scaffold with socket joint in the building site at present, but owing to structural reason, have following problem: the fastener of (1) fastener type steel pipe scaffold is lost easily; The rod member at node place is eccentric the connection, and frictionally transmits load, thereby has reduced its supporting capacity; The influence of the own quality of quality of connection fastener between steel pipe and workman's operation is remarkable.(2) socket joint connects the linkage that scaffold is not provided with down tube; Down tube can't be installed, influence the stability of scaffold, thereby reduce its supporting capacity.
Summary of the invention
To above-mentioned situation, for overcoming the prior art defective, the present invention's purpose just provides a kind of spigot-and-socket tenon fourth of the twelve Earthly Branches self-locking steel pipe scaffold connector, can effectively solve fastener and be prone to lose, the problem of stability and supporting capacity difference.
The technical scheme that the present invention solves is, comprises cross bar assembly, standpipe and vertical rod tenon socket, and the cross bar assembly is combined through slide bolt and cross bar fourth of the twelve Earthly Branches groove by cross bar and constituted; Slide bolt one end is installed in the groove of the cross bar fourth of the twelve Earthly Branches, and the other end is installed in the through hole of cross bar, and the front end of cross bar and cross bar fourth of the twelve Earthly Branches groove are fixed together; Standpipe is fixed in the vertical rod tenon socket; Vertical rod tenon socket perimembranous and cross bar fourth of the twelve Earthly Branches groove be fit mutually, and the cross bar assembly is connected with vertical brace with horizontal brace assembly respectively, and described horizontal brace assembly is made up of horizontal brace and grooving; Horizontal brace links together through rivet (bolt or pin) and grooving; Horizontal brace can rotate around rivet (bolt or pin) in horizontal plane, and it is outside that grooving is installed on cross bar fourth of the twelve Earthly Branches groove, and vertical brace and horizontal brace all are the integrative-structures that partly are made up of stretched part and clinohedral; On one end of stretched part flat upper surface is arranged, the inclined-plane of clinohedral part links to each other with flat upper surface.
The present invention have auto-lock function, simple in structure, be connected firmly, resistance to overturning is good, bearing capacity is high, fast assembling and disassembling, easy to use, has avoided losing of component and fitting, repeat usage is high, has reduced the cost of using.
Description of drawings
Fig. 1 is a structural perspective of the present invention.
Fig. 2 is the structural perspective (during bolt) of another embodiment of the present invention.
Fig. 3 is the structural perspective of cross bar of the present invention fourth of the twelve Earthly Branches groove.
Fig. 4 is the structure upward view of cross bar of the present invention fourth of the twelve Earthly Branches groove.
Fig. 5 is the structural perspective of vertical rod tenon socket of the present invention.
Fig. 6 is the structural perspective of horizontal brace assembly of the present invention (during bolt).
Fig. 7 is the structural perspective of first embodiment of horizontal brace assembly of the present invention (during dowel fixes).
Fig. 8 is the structural perspective of second embodiment of horizontal brace assembly of the present invention (rivet fixedly time).
Fig. 9 is the structural front view of horizontal brace of the present invention.
Figure 10 is the left TV structure stereogram of cross bar assembly of the present invention.
Figure 11 is the right TV structure stereogram of cross bar assembly of the present invention.
Figure 12 is the structural perspective of slide bolt of the present invention.
The specific embodiment
Elaborate below in conjunction with the accompanying drawing specific embodiments of the invention.
Provide by Fig. 1-Figure 12; The present invention includes cross bar assembly, standpipe and vertical rod tenon socket, the cross bar assembly is combined through slide bolt 25 and cross bar fourth of the twelve Earthly Branches groove 4 by cross bar 2 and is constituted, and slide bolt one end is installed in the groove of the cross bar fourth of the twelve Earthly Branches; The other end is installed in the through hole 24 of cross bar; The front end of cross bar and cross bar fourth of the twelve Earthly Branches groove are fixed together, and standpipe 1 is fixed in the vertical rod tenon socket 6, and vertical rod tenon socket perimembranous and cross bar fourth of the twelve Earthly Branches groove 4 be fit mutually; The cross bar assembly is connected with vertical brace 26 with horizontal brace assembly 3 respectively; Described horizontal brace assembly 3 is made up of horizontal brace and grooving, and horizontal brace 11 links together through rivet 13 (bolt or pin) and grooving 12, and horizontal brace can rotate around rivet (bolt or pin) in horizontal plane; It is outside that grooving is installed on cross bar fourth of the twelve Earthly Branches groove; Vertical brace and horizontal brace all are the integrative-structures that partly are made up of stretched part and clinohedral, on the end of stretched part flat upper surface A are arranged, clinohedral inclined-plane B partly link to each other with flat upper surface A (as shown in Figure 9).
Described vertical rod tenon socket 6 is combined by four on socket 7 and socket front and back symmetries and symmetrical up-small and down-big, pre-large post-small tenon 5 and is constituted; Shrinkage pool 8 is arranged in the front end of tenon; Circular or the oblate cavity 9 that inside and outside connection is arranged on the tenon both sides; There is protruding fixture block 10 the tenon top, and shrinkage pool and fixture block are all rectangular; Last plane 14 is arranged at one end top of described cross bar fourth of the twelve Earthly Branches groove 4, and there is tapered plane 16 both sides, and trapezoidal perforate 15 is arranged in the middle of the last plane; The round hole 17 that connection is arranged respectively on the tapered plane of both sides has protruding torus 18 on the outside of round hole, the tapered plane junction of last plane and both sides is circular arc; On anterior 21 the groove 22 that matches with tenon shape size is arranged, groove and trapezoidal perforate and round hole are interconnected, and groove is the groove shape spiral-lock of front and lower aperture on tenon; Trapezoidal perforate and fixture block snap together; Circular or the oblate empty corresponding connection that round hole is inner with tenon, the cross bar fourth of the twelve Earthly Branches groove other end is fixed on the round 20, and there is Rotary-table 23 at the round rear portion; The Rotary-table edge is fixed with the joint 19 of arc, and Rotary-table is fixed together through joint and cross bar 2; Described grooving 12 is the semi-circular ring that matches and answer with cross bar fourth of the twelve Earthly Branches groove size; Described through hole 24 is the little bellmouth of the big other end of an end; The structure of described slide bolt 25 is, it is longer than the other end that two ends are the end of body of rod 25a of bending, and the long end of the body of rod has bumping post 25b; The short end of the body of rod has vertical slot 25d, is installed with rotating catch 25c on the transverse axis in the vertical slot, when installing; Catch is allocated to and body of rod horizontal state mutually, after installing, in the time of fixedly; Catch is allocated to the state perpendicular with the body of rod, can realizes fixing; Described bumping post 25b is a cylinder, and height is greater than the diameter of the body of rod; The through hole 24 that the long end of described body of rod 25a passes cross bar by the bumping post block in through hole; When the cross bar assembly is connected with vertical brace 26; The short end of the body of rod of slide bolt passes round hole 17 and the circular or oblate cavity 9 of tenon and the front end of vertical brace of cross bar fourth of the twelve Earthly Branches groove; Link together through catch; When the cross bar assembly was connected with horizontal brace assembly, the short end of the body of rod of slide bolt passed the circular or oblate cavity 9 of grooving and the cross bar fourth of the twelve Earthly Branches groove and the tenon of horizontal brace assembly, links together through catch; Described cross bar fourth of the twelve Earthly Branches groove 4 also can be connected with vertical brace 26 with horizontal brace assembly 3 respectively through bolt (or pin).
The present invention is welded on cross bar fourth of the twelve Earthly Branches groove, vertical rod tenon socket respectively on cross bar, the standpipe earlier in use, and slide bolt, cross bar and cross bar fourth of the twelve Earthly Branches groove are combined; The short end of slide bolt penetrates the round hole of cross bar fourth of the twelve Earthly Branches groove, and catch is arranged, and catch is free to rotate; Long end has bumping post, and bumping post can pass the big end of the through hole of cross bar, retaining and small end place; On the tenon on cross bar fourth of the twelve Earthly Branches groove cover and the vertical rod tenon socket, rap and compress, horizontal brace assembly and vertical brace (horizontal brace assembly is claimed down tube again with vertical brace) are installed then; During connection, slide bolt is extracted out in cross bar, the short end of slide bolt is extracted out in the round hole of cross bar fourth of the twelve Earthly Branches groove; The bumping post retaining of the long end of slide bolt is at the small end place of through hole, and the grooving of horizontal brace assembly is placed on one of them cross bar fourth of the twelve Earthly Branches groove, promotes slide bolt; The short end of the body of rod of slide bolt passes the circular or oblate cavity of grooving two ends and this cross bar fourth of the twelve Earthly Branches groove and tenon; Horizontal catch is allocated to the body of rod is vertical configuration, promptly accomplish being connected of horizontal brace assembly and cross bar assembly and standpipe, more vertical brace is connected with another cross bar fourth of the twelve Earthly Branches groove; Promote slide bolt; The short end of the body of rod that is about to slide bolt passes the jack of this cross bar fourth of the twelve Earthly Branches groove, tenon and vertical brace, horizontal catch is allocated to the body of rod be vertical configuration, promptly accomplishes vertical brace and fixes with being connected of cross bar assembly and standpipe.
Can know that by said structure the present invention includes standpipe, cross bar assembly and vertical rod tenon socket, the cross bar assembly comprises slide bolt, cross bar and cross bar fourth of the twelve Earthly Branches groove; The outer end and the cross bar of cross bar fourth of the twelve Earthly Branches groove are fixed together, and during binding slide bolt are extracted out in cross bar, and standpipe is fixed in the vertical rod tenon socket; Vertical rod tenon socket perimembranous and cross bar fourth of the twelve Earthly Branches groove be fit mutually, makes on the tenon of cross bar fourth of the twelve Earthly Branches groove fit and vertical rod tenon socket, respectively horizontal brace assembly and vertical brace position is put well again; Again slide bolt is inserted in the cross bar, push the catch of the short end of slide bolt vertical with slide bolt, this moment the cross bar assembly respectively with horizontal brace assembly, vertical brace linking together tightly; Described horizontal brace assembly is made up of horizontal brace, rivet (bolt or pin) and grooving; Horizontal brace links together through rivet (bolt or pin) and grooving, and horizontal brace can rotate around rivet (bolt or pin) in horizontal plane, and it is outside that grooving is installed on cross bar fourth of the twelve Earthly Branches groove; Grooving is the semi-circular ring that matches and answer with cross bar fourth of the twelve Earthly Branches groove size; The bottom of horizontal brace is horizontal, and an end has platform, and the body of rod that links to each other with platform is tilted to.Each tie point of the present invention can effectively be connected the cross bar and the horizontal brace assembly of four direction with vertical brace with standpipe, the cross bar axis of four direction intersects at a bit, makes the whole axially loadeds of standpipe; No subsidiary stress; Mechanical property is good, has auto-lock function, and horizontal brace assembly effectively is connected with standpipe, cross bar assembly through slide bolt with vertical brace; It is more reliable that standpipe, cross bar assembly are connected with down tube, the scaffold good integrity of composition.With respect to traditional fastener type steel pipe scaffold and spigot-and-socket steel pipe scaffold, its supporting capacity has had significantly raising; Because connection fittings of the present invention are fixed on the steel pipe, have avoided losing of accessory, have improved repeat usage; Reduced use cost; And the connection reliability of rod member is reduced by the probability of artificial on-site construction operations factor affecting greatly, and simple to operate in installation and demolishing process, a people can operate; Reduce engineering cost, reduce the duration.
Standpipe of the present invention adopts the tenon fourth of the twelve Earthly Branches (being the tenon of cross bar fourth of the twelve Earthly Branches groove and vertical rod tenon socket) to be connected with the cross bar assembly; The cross bar assembly can not break away from standpipe under horizontal force, simultaneously, being shaped as of cross bar fourth of the twelve Earthly Branches groove is up-small and down-big; Can guarantee that the cross bar assembly can bear load action straight down; Have auto-lock function, and, then can stop cross bar assembly end to come off through slide bolt if the cross bar assembly receives load action straight up.Down tube is fixed on the vertical rod tenon socket through slide bolt, can guarantee the stability of scaffold, save the scaffold node set-up time, and security performance is reliable.The fastener that the invention solves traditional fastener type steel pipe scaffold existence is lost and breaking-up easily easily; Supporting capacity is not high; The significant problem of influence that efficiency of construction quality of quality of connection fastener own and workman low and the fastener node operate; Having solved socket joint connects the installation that scaffold is not provided with the problem, particularly down tube of down tube and has improved scaffold supporting capacity and resistance to overturning greatly.
Claims (9)
1. a spigot-and-socket tenon fourth of the twelve Earthly Branches self-locking steel pipe scaffold connector comprises cross bar assembly, standpipe and vertical rod tenon socket, it is characterized in that; The cross bar assembly is combined formation by cross bar (2) through slide bolt (25) and cross bar fourth of the twelve Earthly Branches groove (4); Slide bolt one end is installed in the groove of the cross bar fourth of the twelve Earthly Branches, and the other end is installed in the through hole (24) of cross bar, and the front end of cross bar and cross bar fourth of the twelve Earthly Branches groove are fixed together; Standpipe (1) is fixed in the vertical rod tenon socket (6); Vertical rod tenon socket perimembranous and cross bar fourth of the twelve Earthly Branches groove (4) be fit mutually, and the cross bar assembly is connected with vertical brace (26) with horizontal brace assembly (3) respectively, and described horizontal brace assembly (3) is made up of horizontal brace and grooving; Horizontal brace (11) links together through rivet (13) and grooving (12); Horizontal brace can rotate around rivet in horizontal plane, and it is outside that grooving is installed on cross bar fourth of the twelve Earthly Branches groove, and vertical brace and horizontal brace all are the integrative-structures that partly are made up of stretched part and clinohedral; On one end of stretched part flat upper surface (A) is arranged, the inclined-plane (B) of clinohedral part links to each other with flat upper surface (A).
2. spigot-and-socket tenon fourth of the twelve Earthly Branches self-locking steel pipe scaffold connector according to claim 1; It is characterized in that; Described vertical rod tenon socket (6) is combined formation by four on socket (7) and socket front and back symmetries and symmetrical up-small and down-big, pre-large post-small tenon (5), and shrinkage pool (8) is arranged in the front end of tenon, and the circular or oblate cavity (9) of inside and outside connection is arranged on the tenon both sides; There is protruding fixture block (10) the tenon top, and shrinkage pool and fixture block are all rectangular.
3. spigot-and-socket tenon fourth of the twelve Earthly Branches self-locking steel pipe scaffold connector according to claim 1 is characterized in that last plane (14) is arranged at an end top of described cross bar fourth of the twelve Earthly Branches groove (4); There is tapered plane (16) both sides, in the middle of the last plane trapezoidal perforate (15) are arranged, and the round hole (17) of connection is arranged respectively on the tapered plane of both sides; Protruding torus (18) is arranged on the outside of round hole, and the tapered plane junction of last plane and both sides is circular arc, on anterior (21) groove (22) that matches with tenon shape size is arranged; Groove and trapezoidal perforate and round hole are interconnected; Groove is the groove shape spiral-lock of front and lower aperture on tenon, and trapezoidal perforate and fixture block snap together, the circular or oblate empty corresponding connection that round hole is inner with tenon; The cross bar fourth of the twelve Earthly Branches groove other end is fixed on the round (20); There is Rotary-table (23) at the round rear portion, and the Rotary-table edge is fixed with the joint (19) of arc, and Rotary-table is fixed together through joint and cross bar (2).
4. spigot-and-socket tenon fourth of the twelve Earthly Branches self-locking steel pipe scaffold connector according to claim 1 is characterized in that, described grooving (12) is the semi-circular ring that matches and answer with cross bar fourth of the twelve Earthly Branches groove size.
5. spigot-and-socket tenon fourth of the twelve Earthly Branches self-locking steel pipe scaffold connector according to claim 1 is characterized in that described through hole (24) is the little bellmouth of the big other end of an end.
6. spigot-and-socket tenon fourth of the twelve Earthly Branches self-locking steel pipe scaffold connector according to claim 1 is characterized in that the structure of described slide bolt (25) is; Two ends are that the end of the body of rod (25a) of bending is longer than the other end, and the long end of the body of rod has bumping post (25b), and the short end of the body of rod has vertical slot (25d); Be installed with rotating catch (25c) on the transverse axis in the vertical slot; When installing, catch is allocated to and body of rod horizontal state mutually, after installing; In the time of fixedly, catch is allocated to the state perpendicular with the body of rod.
7. spigot-and-socket tenon fourth of the twelve Earthly Branches self-locking steel pipe scaffold connector according to claim 6 is characterized in that described bumping post (25b) is a cylinder, and height is greater than the diameter of the body of rod.
8. spigot-and-socket tenon fourth of the twelve Earthly Branches self-locking steel pipe scaffold connector according to claim 6 is characterized in that, the through hole (24) that the long end of the described body of rod (25a) passes cross bar by the bumping post block in through hole.
9. spigot-and-socket tenon fourth of the twelve Earthly Branches self-locking steel pipe scaffold connector according to claim 1; It is characterized in that; Described cross bar assembly and vertical brace (26) are when being connected; The short end of the body of rod of slide bolt passes round hole (17) and the circular or oblate cavity (9) of tenon and the front end of vertical brace of cross bar fourth of the twelve Earthly Branches groove, links together through catch, when the cross bar assembly is connected with horizontal brace assembly; The short end of the body of rod of slide bolt passes the circular or oblate cavity (9) of grooving and the cross bar fourth of the twelve Earthly Branches groove and the tenon of horizontal brace assembly, links together through catch.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110277853 CN102444273B (en) | 2011-09-19 | 2011-09-19 | Connecting member of socket and spigot type tenon-mortise self-locked steel pipe scaffold |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110277853 CN102444273B (en) | 2011-09-19 | 2011-09-19 | Connecting member of socket and spigot type tenon-mortise self-locked steel pipe scaffold |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102444273A true CN102444273A (en) | 2012-05-09 |
| CN102444273B CN102444273B (en) | 2013-09-18 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201110277853 Expired - Fee Related CN102444273B (en) | 2011-09-19 | 2011-09-19 | Connecting member of socket and spigot type tenon-mortise self-locked steel pipe scaffold |
Country Status (1)
| Country | Link |
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| CN (1) | CN102444273B (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102392533A (en) * | 2011-10-17 | 2012-03-28 | 宋佩瑜 | Steel pipe scaffold connecting piece |
| CN102943541A (en) * | 2012-12-11 | 2013-02-27 | 上海市机械施工有限公司 | Steel structure connecting device |
| CN103174286A (en) * | 2013-03-27 | 2013-06-26 | 湖南金峰建达科技发展有限公司 | Self-locking type scaffold welding-free connection device |
| CN103485529A (en) * | 2013-10-15 | 2014-01-01 | 湖南金峰金属构件有限公司 | Multifunctional socket connecting device for socket keyslot type support |
| CN110056083A (en) * | 2019-04-16 | 2019-07-26 | 武汉大学 | Can quick assembling self-locking FRP profile bean column node |
| CN112211392A (en) * | 2020-09-28 | 2021-01-12 | 安徽长青建筑制品有限公司 | Scaffold frame supports reinforced structure for construction |
| CN115043092A (en) * | 2022-07-22 | 2022-09-13 | 天元建设集团有限公司 | Mortise and tenon type steel pipe bundle capable of being positioned |
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| SU962534A1 (en) * | 1981-02-12 | 1982-09-30 | Проектно-Технологический Трест "Оргтехстрой" Министерства Строительства Ссср | Scaffold for construction and erection work |
| CN2256011Y (en) * | 1996-06-06 | 1997-06-11 | 余炳全 | Pattern inserting steel bar scaffold |
| DE202004002593U1 (en) * | 2004-02-19 | 2004-06-09 | Wilhelm Layher Vermögensverwaltungs-Gmbh | Termination element for coupling devices of scaffolding frame e.g. for supporting concrete shuttering |
| CN2873939Y (en) * | 2006-03-06 | 2007-02-28 | 张建忠 | Quick clamping support frame |
| CN202248845U (en) * | 2011-09-19 | 2012-05-30 | 焦作建工集团有限公司 | Socket and spigot joint type connecting piece for mortise and tenon joint self-locking steel tube scaffold |
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2011
- 2011-09-19 CN CN 201110277853 patent/CN102444273B/en not_active Expired - Fee Related
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
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| SU962534A1 (en) * | 1981-02-12 | 1982-09-30 | Проектно-Технологический Трест "Оргтехстрой" Министерства Строительства Ссср | Scaffold for construction and erection work |
| CN2256011Y (en) * | 1996-06-06 | 1997-06-11 | 余炳全 | Pattern inserting steel bar scaffold |
| DE202004002593U1 (en) * | 2004-02-19 | 2004-06-09 | Wilhelm Layher Vermögensverwaltungs-Gmbh | Termination element for coupling devices of scaffolding frame e.g. for supporting concrete shuttering |
| CN2873939Y (en) * | 2006-03-06 | 2007-02-28 | 张建忠 | Quick clamping support frame |
| CN202248845U (en) * | 2011-09-19 | 2012-05-30 | 焦作建工集团有限公司 | Socket and spigot joint type connecting piece for mortise and tenon joint self-locking steel tube scaffold |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102392533A (en) * | 2011-10-17 | 2012-03-28 | 宋佩瑜 | Steel pipe scaffold connecting piece |
| CN102392533B (en) * | 2011-10-17 | 2013-06-26 | 宋佩瑜 | Steel pipe scaffold connecting piece |
| CN102943541A (en) * | 2012-12-11 | 2013-02-27 | 上海市机械施工有限公司 | Steel structure connecting device |
| CN103174286A (en) * | 2013-03-27 | 2013-06-26 | 湖南金峰建达科技发展有限公司 | Self-locking type scaffold welding-free connection device |
| CN103485529A (en) * | 2013-10-15 | 2014-01-01 | 湖南金峰金属构件有限公司 | Multifunctional socket connecting device for socket keyslot type support |
| CN110056083A (en) * | 2019-04-16 | 2019-07-26 | 武汉大学 | Can quick assembling self-locking FRP profile bean column node |
| CN112211392A (en) * | 2020-09-28 | 2021-01-12 | 安徽长青建筑制品有限公司 | Scaffold frame supports reinforced structure for construction |
| CN115043092A (en) * | 2022-07-22 | 2022-09-13 | 天元建设集团有限公司 | Mortise and tenon type steel pipe bundle capable of being positioned |
Also Published As
| Publication number | Publication date |
|---|---|
| CN102444273B (en) | 2013-09-18 |
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