CN103074999B - Novel steel pipe scaffold connecting piece - Google Patents
Novel steel pipe scaffold connecting piece Download PDFInfo
- Publication number
- CN103074999B CN103074999B CN201310045599.6A CN201310045599A CN103074999B CN 103074999 B CN103074999 B CN 103074999B CN 201310045599 A CN201310045599 A CN 201310045599A CN 103074999 B CN103074999 B CN 103074999B
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- China
- Prior art keywords
- trapezoidal
- groove
- lock pin
- hole
- dovetail groove
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Abstract
The invention discloses a novel steel pipe scaffold connecting piece, which comprises a sleeve and a pipe joint, wherein four trapezoidal keys are arranged on the peripheral surface of the sleeve; one end of the pipe joint is provided with a trapezoidal groove which is matched with one trapezoidal key; the trapezoidal key is inserted into the trapezoidal groove; a vertical locking pin through hole is formed in the middle along the length direction of the trapezoidal groove; a locking pin is inserted into the locking pin through hole; the top surface of a narrow end of the trapezoidal key is provided with a convex top; the bottom surface of the trapezoidal groove is provided with a groove which is matched with the convex top; a trapezoidal bump is arranged on one side close to the middle part of the locking pin; and a locking groove which is matched with the wide end of the trapezoidal bump is formed in the locking pin through hole and is mutually crossed with the groove in the bottom surface of the trapezoidal groove. The novel steel pipe scaffold connecting piece has the advantages that the pipe joint and the locking pin can be combined or separated by only pushing and pulling half the locking pin during disassembly and assembly of the pipe joint so as to prevent the locking pin from being lost, the trapezoidal key is tightly attached to the trapezoidal groove and is firmly connected with the trapezoidal groove, and a rectangular groove of the locking pin through hole axially stretches to improve the integral intensity of the connecting piece and prevent adjacent locking pins from being interfered with each other during use.
Description
Technical field
The present invention relates to a kind of steel tube scaffold connector, for building operations.
Background technology
The connector of the steel tube scaffold of prior art mainly comprises sleeve and union, is provided with four trapezoidal keys be uniformly distributed along the circumference at the outer peripheral face of this sleeve; The dovetail groove being respectively equipped with ring-type socket joint platform at the two ends of this union and coordinating with this trapezoidal key, this trapezoidal key inserts in this dovetail groove.During use, jacket casing is welded on standpipe, the ring-type socket joint platform of union is connected with the transverse pipe of horizontal plane and longitudinal pipe top.Be provided with the lock pin through hole vertical with this length direction in this trapezoidal key and the centre of this dovetail groove length direction, enter lock pin in this lock pin through hole interpolation.Only need the trapezoidal key of the union at transverse pipe and longitudinal pipe two ends to insert in this dovetail groove during installation, and enter lock pin in lock pin through hole interpolation and both can be locked together, very convenient.But also there is following shortcoming in this connector: lock pin all must be extracted out in lock pin through hole when dismantling union, easily causing the loss of lock pin; Lock pin trapezoidal key and dovetail groove locking, always can not leave small―gap suture, connects insecure; The large percentage that lock pin through hole accounts at ledge place, reduces the bulk strength of connector; Lock pin positional distance sleeve is comparatively near, mutually disturbs between lock pin (comprising each pipe end of needs connection) adjacent during use, causes adjacent lock pin can not simultaneously for connecting scaffold tube.
Summary of the invention
The present invention aims to provide a kind of steel tube scaffold connector, to solve lock pin all must being extracted out in lock pin through hole when dismantling union of prior art existence, easily causes the loss of lock pin; Lock pin trapezoidal key and dovetail groove locking, always can not leave small―gap suture, connects insecure; The large percentage of lock pin through hole shared by radial (ledge place), reduces the bulk strength of connector; Lock pin positional distance sleeve is comparatively near, mutually disturbs, can only use by part lock pin, the problem that part lock pin is stopped using between lock pin (comprising each pipe end that needs connect) adjacent during use.
Technical scheme of the present invention is: a kind of steel tube scaffold connector, comprises sleeve and union, is provided with the trapezoidal key of four swallow-tail forms be uniformly distributed along the circumference at the outer peripheral face of this sleeve; The dovetail groove being respectively equipped with ring-type socket joint platform at the two ends of this union and coordinating with this trapezoidal key, this trapezoidal key inserts in this dovetail groove, the lock pin through hole perpendicular with the length direction of this dovetail groove is provided with at the middle part of this union, lock pin is entered in this lock pin through hole interpolation, it is characterized in that, be provided with convex top at the end face of the narrow end of described trapezoidal key, be provided with in the bottom surface of this dovetail groove through these dovetail groove two ends and the groove be slidably matched with this convex top; Be provided with trapezoidal projection near the middle part of described lock pin, the locking groove that the wide end being provided with trapezoidal projection with this in the side that the bottom surface of this lock pin through hole and dovetail groove is adjacent is slidably matched, this locking groove intersects mutually with the groove of this dovetail groove bottom surface.
Described lock pin through hole is circular hole; Described locking groove is rectangular recess, and its width is less than the diameter of lock pin through hole.
The end face on the convex top of described trapezoidal key narrow end end face is semi-cylindrical; The groove of the dovetail groove bottom surface of described union is semicircle.
Be provided with connecting axle in ring-type socket joint platform one end of this union, be provided with pin-and-hole on the top of this connecting axle.
Semi-circular recesses is provided with at the end face of the wide end of described trapezoidal key.
Advantage of the present invention is: when dismounting union, only need lock pin to be extracted half (left and right push-and-pull), the trapezoidal projection on lock pin is made to overlap with convex top the on trapezoidal key or stagger, union can be installed from trapezoidal key or unload, realize being separated of sleeve and union, avoid the loss of lock pin; Trapezoidal projection on lock pin utilizes the inclined-plane of its both sides to be held out against by the narrow end of the convex top on trapezoidal key to dovetail groove, makes trapezoidal key and dovetail groove be adjacent to like this, can not leave gap, connects very fastening; The rectangular channel of lock pin through hole, to axial expansion, reduces the ratio shared by radial direction, improves the bulk strength of connector; The corresponding axial dimension adding union, lock pin position and sleeve distance increase, the mutual interference between lock pin (comprising each pipe end of needs connection) adjacent when avoiding use.
Accompanying drawing explanation
Fig. 1 is the general structure schematic diagram of the present invention top view of the connector at P place (in the Figure 17);
Fig. 2 is the perspective view of sleeve of the present invention;
Fig. 3 is the top view of Fig. 2;
Fig. 4 is the left view of Fig. 3;
Fig. 5 is the A-A sectional drawing of Fig. 4;
Fig. 6 is the structural representation of union first embodiment dovetail groove one end of the present invention;
Fig. 7 is the left view of Fig. 6;
Fig. 8 is the rear elevation of Fig. 6;
Fig. 9 is the B-B sectional view of Fig. 6;
Figure 10 is the C-C sectional view of Fig. 9;
Figure 11 is the front view (side view) of lock pin of the present invention;
Figure 12 is the top view of Figure 11;
Figure 13 is the sectional structure schematic diagram that in the present invention, the trapezoidal key of sleeve and the dovetail groove of union lock together by lock pin;
The sectional structure schematic diagram that a part makes the trapezoidal key of sleeve and the dovetail groove of union unlock extracted by lock pin in Figure 13 by Figure 14;
Figure 15 is the axial sectional view of union second embodiment of the present invention;
Figure 16 is the contour structures schematic diagram of union of the present invention 3rd embodiment (with connecting axle and be connected with longitudinal inclined tube);
Figure 17 is the perspective view of the scaffold adopting connector of the present invention assembling.
Detailed description of the invention
See Fig. 1-Figure 17, a kind of steel tube scaffold connector of the present invention, comprise sleeve 1 and union 2, the trapezoidal key 13 of four swallow-tail forms be uniformly distributed along the circumference is provided with at the outer peripheral face of this sleeve 1, convex top 12 is provided with at the end face of the narrow end of trapezoidal key 13, the length on convex top 12 is less than the half (reserving the position of trapezoidal protruding 31 of lock pin 3, see Fig. 4 and Figure 13) of trapezoidal key 13 total length.Be provided with semicircular groove 14 at the end face of the wide end of trapezoidal key 13, the end face on described convex top 12 is semi-cylindrical.
The dovetail groove 21 being respectively equipped with ring-type socket joint platform 24 at the two ends of this union 2 and coordinating with this trapezoidal key 13, the lock pin through hole 22 perpendicular with the length direction of this dovetail groove 21 is provided with at the middle part of this union 2, this trapezoidal key 13 inserts in this dovetail groove 21, in this lock pin through hole 22, insert lock pin 3.Be provided with in the bottom surface of this dovetail groove 21 through this dovetail groove 21 two ends and the groove 23 be slidably matched with the convex top 12 of trapezoidal key 13 end face.Can be provided with in one end that lock pin through hole 22 is adjacent to ring-type socket joint platform 24 and corresponding arch upward 25, lock pin through hole 22 is not exposed, and also gain in strength (as shown in Fig. 6-Fig. 9); Also can by the 25 place's hollow outs (hollow part 26) that arch upward, to save material (as shown in figure 15).The groove 23 of dovetail groove 21 bottom surface of described union 2 is semicircular arc.
See Figure 11-Figure 14, the main body of lock pin 3 is cylindrical bar, is provided with trapezoidal protruding 31 in the side in the middle part of it.Radial aperture 32 is provided with, for insertion opening pin 9 or other pins at the two ends of lock pin 3.
The locking groove 221 that the wide end being provided with this trapezoidal protruding 31 in the side that this lock pin through hole 22 is adjacent with the bottom surface of the dovetail groove 21 of union 2 is slidably matched, this locking groove 221 and the groove 23 of dovetail groove 21 bottom surface intersect (see Fig. 7, Fig. 9 and Figure 10) mutually.Described lock pin through hole 22 is circular hole; Described locking groove 221 is rectangular recess, and its width is less than the diameter of lock pin through hole 22.
See Figure 13 and Figure 14, during assembling, in the dovetail groove 21 of the narrow end Inserting Tube joint 2 of a trapezoidal key 13 of sleeve 1, lock pin 3 is inserted in the lock pin through hole 22 of union 2, after trapezoidal protruding 31 on lock pin 3 is inserted into middle part, the inclined-plane (having wedge effect) of the trapezoidal side of protruding 31 contacts with the inner face on the convex top 12 of trapezoidal key 13 narrow end end face and holds out against, and is locked in securely by trapezoidal key 13 in dovetail groove 21 (as shown in figure 13).When needs dismounting union 2, only need lock pin 3 to extract half, trapezoidal protruding 31 on lock pin 3 is staggered with the convex top 12 on trapezoidal key 13, union can be unloaded from trapezoidal key 13, (other end of lock pin 3 can insertion opening pin 9, as shown in figure 13) to avoid the loss of lock pin 3.On lock pin 3 trapezoidal protruding 31 utilizes the inclined-plane of its both sides to be held out against by the narrow end of the convex top 12 on trapezoidal key 13 to dovetail groove 21, makes trapezoidal key 13 be adjacent to dovetail groove 21 like this, can not leave gap, connect very fastening.
Because pin through hole 22 is axially adding locking groove 221, the therefore distance also corresponding increase of lock pin through hole 22 and sleeve 1, this just makes the distance of adjacent lock pin 3 increase, avoids to assemble between lock pin 3 adjacent afterwards mutually to disturb.
Also can be provided with connecting axle 4 in ring-type socket joint platform 24 one end of union 2, be provided with pin-and-hole 41 on the top of this connecting axle, and be furnished with the pin supporting with this pin-and-hole 41, for the connection (see Fig. 1, Figure 16 and Figure 17) with vertical inclined tube 7.
The ring-type socket joint platform 24 of union 2 also can be common bevel for welding (outer peripheral face of ring-type socket joint platform 24 is inclined-plane, not shown).
See Figure 17 and Fig. 1, adopt the scaffold that connector of the present invention is assembled into, comprise standpipe 11, horizontal plane transverse pipe 10, horizontal plane longitudinal pipe 6, horizontal inclined tube 5, vertical inclined tube 7 and 8 and connector of the present invention, the sleeve 1 of connector is inserted in standpipe 11, and is welded to each other; Horizontal plane transverse pipe 10, horizontal plane longitudinal pipe 6 are relative with the ring-type socket joint platform 24 of two unions 2 of connector respectively to be welded; Horizontal inclined tube 5 is connected with one end of the lock pin 3 on two unions 2 respectively with the vertical inclined tube 8 in outside; The vertical inclined tube 7 of side is connected with the connecting axle 4 on a union 2 in addition.
Claims (5)
1. a steel tube scaffold connector, comprises sleeve and union, is provided with the trapezoidal key of four swallow-tail forms be uniformly distributed along the circumference at the outer peripheral face of this sleeve; The dovetail groove being respectively equipped with ring-type socket joint platform at the two ends of this union and coordinating with this trapezoidal key, this trapezoidal key inserts in this dovetail groove, the lock pin through hole perpendicular with the length direction of this dovetail groove is provided with at the middle part of this union, lock pin is entered in this lock pin through hole interpolation, it is characterized in that, convex top is provided with at the end face of the narrow end of described trapezoidal key, the length on convex top is less than the half of trapezoidal key total length, reserve the position of the trapezoidal projection of lock pin, be provided with in the bottom surface of this dovetail groove through these dovetail groove two ends and the groove be slidably matched with this convex top; Be provided with trapezoidal projection near the middle part of described lock pin, the locking groove that the wide end being provided with trapezoidal projection with this in the side that the bottom surface of this lock pin through hole and dovetail groove is adjacent is slidably matched, this locking groove intersects mutually with the groove of this dovetail groove bottom surface.
2. steel tube scaffold connector according to claim 1, is characterized in that, described lock pin through hole is circular hole; Described locking groove is rectangular recess, and its width is less than the diameter of lock pin through hole.
3. steel tube scaffold connector according to claim 1, is characterized in that, the end face on the convex top of described trapezoidal key narrow end end face is semi-cylindrical; The groove of the dovetail groove bottom surface of described union is semicircle.
4. steel tube scaffold connector according to claim 1, is characterized in that, is provided with connecting axle, is provided with pin-and-hole on the top of this connecting axle in ring-type socket joint platform one end of this union.
5. steel tube scaffold connector according to claim 1, is characterized in that, is provided with semi-circular recesses at the end face of the wide end of described trapezoidal key.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310045599.6A CN103074999B (en) | 2013-02-06 | 2013-02-06 | Novel steel pipe scaffold connecting piece |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310045599.6A CN103074999B (en) | 2013-02-06 | 2013-02-06 | Novel steel pipe scaffold connecting piece |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103074999A CN103074999A (en) | 2013-05-01 |
| CN103074999B true CN103074999B (en) | 2015-05-13 |
Family
ID=48151685
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310045599.6A Expired - Fee Related CN103074999B (en) | 2013-02-06 | 2013-02-06 | Novel steel pipe scaffold connecting piece |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103074999B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104975712B (en) * | 2014-04-11 | 2017-12-08 | 湖南金峰金属构件有限公司 | A kind of socket joint type key slot type steel pipe support attachment means |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0882092A (en) * | 1994-09-05 | 1996-03-26 | Masao Suzuki | Connecting device for pipe |
| CN101225707A (en) * | 2008-01-28 | 2008-07-23 | 成志全 | Plug-fastened self-locking exterior scaffold |
| KR20090028164A (en) * | 2007-09-14 | 2009-03-18 | 주식회사 이지코리아 | Scissors type scaffolding joint device |
| CN201671319U (en) * | 2010-04-29 | 2010-12-15 | 周继忠 | Anti-slipping scaffold |
| CN102392533A (en) * | 2011-10-17 | 2012-03-28 | 宋佩瑜 | Steel pipe scaffold connecting piece |
| CN203066451U (en) * | 2013-02-06 | 2013-07-17 | 宋述泽 | Novel steel pipe scaffold connector |
-
2013
- 2013-02-06 CN CN201310045599.6A patent/CN103074999B/en not_active Expired - Fee Related
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0882092A (en) * | 1994-09-05 | 1996-03-26 | Masao Suzuki | Connecting device for pipe |
| KR20090028164A (en) * | 2007-09-14 | 2009-03-18 | 주식회사 이지코리아 | Scissors type scaffolding joint device |
| CN101225707A (en) * | 2008-01-28 | 2008-07-23 | 成志全 | Plug-fastened self-locking exterior scaffold |
| CN201671319U (en) * | 2010-04-29 | 2010-12-15 | 周继忠 | Anti-slipping scaffold |
| CN102392533A (en) * | 2011-10-17 | 2012-03-28 | 宋佩瑜 | Steel pipe scaffold connecting piece |
| CN203066451U (en) * | 2013-02-06 | 2013-07-17 | 宋述泽 | Novel steel pipe scaffold connector |
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| Publication number | Publication date |
|---|---|
| CN103074999A (en) | 2013-05-01 |
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| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150513 Termination date: 20160206 |
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| CF01 | Termination of patent right due to non-payment of annual fee |