CN214995876U - Connecting fastener for connecting parallel double steel pipes and single steel pipe on scaffold vertically - Google Patents
Connecting fastener for connecting parallel double steel pipes and single steel pipe on scaffold vertically Download PDFInfo
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- CN214995876U CN214995876U CN202121470787.XU CN202121470787U CN214995876U CN 214995876 U CN214995876 U CN 214995876U CN 202121470787 U CN202121470787 U CN 202121470787U CN 214995876 U CN214995876 U CN 214995876U
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- 229910000831 Steel Inorganic materials 0.000 title claims abstract description 92
- 239000010959 steel Substances 0.000 title claims abstract description 92
- 238000004512 die casting Methods 0.000 claims description 2
- 238000010276 construction Methods 0.000 abstract description 10
- 230000007547 defect Effects 0.000 abstract description 5
- 230000004308 accommodation Effects 0.000 description 3
- 238000005266 casting Methods 0.000 description 3
- 230000008878 coupling Effects 0.000 description 3
- 238000010168 coupling process Methods 0.000 description 3
- 238000005859 coupling reaction Methods 0.000 description 3
- 238000000034 method Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 241000124033 Salix Species 0.000 description 1
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Abstract
The invention discloses a connecting fastener for vertically connecting a parallel double-steel pipe and a single-steel pipe on a scaffold, which is used for vertically connecting the parallel double-steel pipe and the single-steel pipe on the scaffold, and comprises: the double-steel-pipe parallel connection structure comprises a first sub-fastener, a second sub-fastener, a third sub-fastener and a fourth sub-fastener, wherein two steel pipes of the parallel double-steel-pipe are respectively arranged between the first sub-fastener and the second sub-fastener and between the third sub-fastener and the fourth sub-fastener, and a single steel pipe is arranged between the second sub-fastener and the third sub-fastener. The invention avoids that two steel pipes are not at the same elevation due to the use of a plurality of cross fasteners when the parallel double steel pipes are connected, and a short steel pipe is not required to be selected, so that the connection is firmer, the workload of a construction site is reduced, a stable supporting system is formed, the safety and the reliability are ensured, the uniform stress of the beam bottom is ensured, the quality defect is not formed, and the integral construction level is ensured.
Description
Technical Field
The invention relates to the technical field of connecting fasteners for building scaffolds, in particular to a connecting fastener for connecting a double parallel steel pipe and a single steel pipe on a scaffold.
Background
In the process of using the scaffold in construction engineering, especially in the process of using socket type plate buckle type supporting system, the modulus of a beam side plate buckle upright rod plate at a beam plate junction is not at the same elevation as a beam bottom, the beam bottom needs to adopt double steel pipes as a main keel, when the main keel adopts a top support, the beam bottom support upright rod and the beam side upright rod are on the same straight line, a proper short steel pipe can be selected due to the problem of insufficient space size, the workload of a construction site is improved, and the short steel pipe is unfixed at two ends, so the steel pipe is easy to slide, a stable supporting system cannot be formed, the safety and the reliability are difficult to guarantee, the stress of the beam bottom caused by deformation of the support plate is uneven, the quality defect is easy to form, and the overall construction level is influenced.
Disclosure of Invention
Aiming at the defects of the prior art, the invention designs a connecting fastener for vertically connecting a parallel double-steel pipe and a single-steel pipe on a scaffold, the connecting fastener is used for vertically connecting the parallel double-steel pipe and the single-steel pipe on the scaffold, and the connecting fastener comprises: the first sub-fastener, the second sub-fastener, the third sub-fastener and the fourth sub-fastener; the single steel pipe is arranged in the accommodating space formed between the second sub-fastener and the third sub-fastener; the first sub-fastener and the second sub-fastener, the third sub-fastener and the fourth sub-fastener are connected, accommodating spaces are formed between the first sub-fastener and the second sub-fastener and between the third sub-fastener and the fourth sub-fastener, and two rods of the parallel double-steel tube are arranged in the accommodating space formed between the first sub-fastener and the second sub-fastener and the accommodating space formed between the third sub-fastener and the fourth sub-fastener respectively.
Preferably, the second sub-fastener and the third sub-fastener both include a first connecting surface and a second connecting surface, and the first sub-fastener and the fourth sub-fastener both include a third connecting surface, wherein the second connecting surface and the first connecting surface are respectively arranged at the inner side and the outer side of the second sub-fastener and the third sub-fastener; the second connecting surface of the second sub-fastener is opposite to and connected with the second connecting surface of the third sub-fastener, and an accommodating space formed between the second connecting surface of the second sub-fastener and the second connecting surface of the third sub-fastener is used for arranging a single steel pipe; the first connecting surface of the second sub-fastener and the third connecting surface of the first sub-fastener are oppositely arranged and connected, and an accommodating space formed between the first connecting surface of the second sub-fastener and the third connecting surface of the first sub-fastener is used for arranging one of the parallel double steel pipes; the first connecting surface of the third sub-fastener and the third connecting surface of the fourth sub-fastener are oppositely arranged and connected, and the accommodating space formed between the first connecting surface of the third sub-fastener and the third connecting surface of the fourth sub-fastener is used for arranging the other steel pipe in the parallel double steel pipes.
Preferably, one end of the second connecting surface of the second sub-fastener is rotatably connected with one end of the second connecting surface of the third sub-fastener, and the other end of the second connecting surface of the second sub-fastener is detachably connected with the other end of the second connecting surface of the third sub-fastener; one end of the first connecting surface of the second sub-fastener is rotatably connected with one end of the third connecting surface of the first sub-fastener, and the other end of the first connecting surface of the second sub-fastener is detachably connected with the other end of the third connecting surface of the first sub-fastener; one end of the first connecting surface of the third sub-fastener is rotatably connected with one end of the third connecting surface of the fourth sub-fastener, and the other end of the first connecting surface of the third sub-fastener is detachably connected with the other end of the third connecting surface of the fourth sub-fastener.
Preferably, two ends of the third connecting surface of the first sub-fastener are respectively provided with a first locking structure and a first rotating structure, and two ends of the first connecting surface of the second sub-fastener are respectively provided with a second rotating structure and a second locking structure; first revolution mechanic passes through willow nail swivelling joint with the second revolution mechanic, and first locking structure and second locking structure pass through T type bolt detachable connection.
Preferably, two ends of a second connecting surface of the second sub-fastener are respectively provided with a third rotating structure and a third locking structure, and two ends of a second connecting surface of the third sub-fastener are respectively provided with a fourth rotating structure and a fourth locking structure; the third rotating structure and the fourth rotating structure are connected in a rotating mode through the rivet, and the third locking structure and the fourth locking structure are detachably connected through the T-shaped bolt.
Preferably, a fifth rotating structure and a fifth locking structure are respectively arranged at two ends of the first connecting surface of the third sub-fastener, and a sixth rotating structure and a sixth locking structure are respectively arranged at two ends of the third connecting surface of the fourth sub-fastener; the fifth rotating structure is rotatably connected with the sixth rotating structure through a rivet, and the fifth locking structure is detachably connected with the sixth locking structure through a T-shaped bolt.
Preferably, the first connecting surface, the second connecting surface and the third connecting surface are semi-circular arc surfaces, the second connecting surface of the second sub-fastener is equal to the second connecting surface of the third sub-fastener in inner diameter and is matched with the outer diameter of the single steel pipe, the first connecting surface of the second sub-fastener is equal to the third connecting surface of the first sub-fastener in inner diameter and is matched with the outer diameter of one of the parallel double steel pipes, the first connecting surface of the third sub-fastener is equal to the third connecting surface of the fourth sub-fastener in inner diameter and is matched with the outer diameter of the other of the parallel double steel pipes, and the axes of the first connecting surface and the second connecting surface are perpendicular to each other.
Preferably, the first sub-fastener, the second sub-fastener, the third sub-fastener and the fourth sub-fastener are all single die-opened castings.
Compared with the closest prior art, the invention has the beneficial effects that:
1. according to the connecting fastener, the single steel pipe and the parallel double steel pipes can be fixedly connected through the first sub-fastener, the second sub-fastener, the third sub-fastener and the fourth sub-fastener, the condition that the two steel pipes are not at the same elevation due to the fact that a plurality of cross fasteners are used when the parallel double steel pipes are connected is avoided, short steel pipes are not required to be selected, connection is firmer, workload of a construction site is reduced, a stable supporting system is formed, safety and reliability are guaranteed, uniform stress of a beam bottom can be guaranteed, quality defects cannot be caused, and the overall construction level is guaranteed.
2. The first sub-fastener, the second sub-fastener, the third sub-fastener and the fourth sub-fastener of the connecting fastener are casting parts which are independently opened, so that the tensile strength of the connecting fastener is increased, the torque-resistant rigidity is greatly improved, and the connecting fastener has higher safety and reliability.
3. According to the connecting fastener, the first sub-fastener, the second sub-fastener, the third sub-fastener and the fourth sub-fastener are connected in a rotating mode through the nails and detachably connected through the T-shaped bolts, the height direction of the parallel double steel pipes can be adjusted at will, the eccentric stress of the cross fastener can be changed into the axial stress along the vertical rod direction, and the stability and the reliability of frame construction are greatly improved.
4. One end of each of the first sub-fastener, the second sub-fastener, the third sub-fastener and the fourth sub-fastener of the connecting fastener is in a rotary connection mode, and the other end of each of the first sub-fastener, the second sub-fastener, the third sub-fastener and the fourth sub-fastener is in a detachable connection mode.
Drawings
Fig. 1 is a schematic view of an installation structure of the connecting fastener of the present invention.
Fig. 2 is a schematic front view of the connecting fastener of the present invention.
FIG. 3 is an exploded view of the present invention shown in FIG. 2 (bolts and spikes not shown).
Fig. 4 is a schematic top view of the connecting fastener of the present invention.
FIG. 5 is an exploded view of the present invention shown in FIG. 2 (bolts and spikes not shown).
Reference numerals:
1-connecting fastener, 11-first sub fastener, 111-first locking structure, 112-first rotating structure, 12-second sub fastener, 121-second rotating structure, 122-third rotating structure, 123-second locking structure, 124-third locking structure, 13-third sub fastener, 131-fourth rotating structure, 132-fifth rotating structure, 133-fourth locking structure, 134-fifth locking structure, 14-fourth sub fastener, 141-sixth rotating structure, 142-sixth locking structure, 2-single steel pipe and 3-parallel double steel pipe.
Detailed Description
The technical solution in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention.
Example 1
As shown in fig. 1 to 5, the present invention provides a coupling clip for connecting a parallel double steel pipe and a single steel pipe on a scaffold perpendicularly, wherein the coupling clip 1 is used for vertically connecting a parallel double steel pipe 3 and a single steel pipe 2 on a scaffold, and the coupling clip 1 comprises: a first sub fastening member 11, a second sub fastening member 12, a third sub fastening member 13 and a fourth sub fastening member 14. The second sub-fastener 12 is connected to the third sub-fastener 13, an accommodating space is formed between the second sub-fastener 12 and the third sub-fastener 13, and the single steel tube 2 is disposed in the accommodating space formed between the second sub-fastener 12 and the third sub-fastener 13. First sub-fastener 11 and second sub-fastener 12, third sub-fastener 13 is connected with fourth sub-fastener 14, and all have between first sub-fastener 11 and second sub-fastener 12 and third sub-fastener 13 and fourth sub-fastener 14 to be formed with accommodation space, and two poles of parallel double steel pipe 3 set up respectively in the accommodation space that forms between first sub-fastener 11 and second sub-fastener 12 and the accommodation space that forms between third sub-fastener 13 and fourth sub-fastener 14. Connect fastener 1 and with single steel pipe 2 and the 3 fixed connection of parallel two steel pipes, two steel pipes that lead to because of using a plurality of cross fasteners are not at same elevation when having avoided the connection of parallel two steel pipes 3, need not to select short steel pipe, not only can make to connect more firm, the job site work load has been reduced, form firm support system, security and reliability are ensured, and can guarantee that the bottom of a beam atress is even moreover, can not form quality defect, whole construction level has been guaranteed.
The second sub-fastener 12 and the third sub-fastener 13 both include a first connecting surface and a second connecting surface, the first sub-fastener 11 and the fourth sub-fastener 14 both include a third connecting surface, and the second connecting surface and the first connecting surface are respectively disposed on the inner side and the outer side of the second sub-fastener 12 and the third sub-fastener 13. The second connection surface of the second sub-fastener 12 and the second connection surface of the third sub-fastener 13 are oppositely arranged and connected, and the second connection surface of the second sub-fastener 12 and the second connection surface of the third sub-fastener 13 form an accommodating space for arranging the single steel pipe 2. The first connecting surface of the second sub-fastening member 12 is opposite to and connected with the third connecting surface of the first sub-fastening member 11, and the accommodating space formed between the first connecting surface of the second sub-fastening member 12 and the third connecting surface of the first sub-fastening member 11 is used for arranging one of the parallel double steel pipes 3. The first connecting surface of the third sub-fastening 13 is opposite to and connected with the third connecting surface of the fourth sub-fastening 14, and the accommodating space formed between the first connecting surface of the third sub-fastening 13 and the third connecting surface of the fourth sub-fastening 14 is used for arranging the other steel pipe in the parallel double steel pipes 3.
In a preferred embodiment, one end of the second connection surface of the second sub-fastening member 12 is rotatably connected to one end of the second connection surface of the third sub-fastening member 13, and the other end of the second connection surface of the second sub-fastening member 12 is detachably connected to the other end of the second connection surface of the third sub-fastening member 13. One end of the first connecting surface of the second sub-fastening member 12 is rotatably connected to one end of the third connecting surface of the first sub-fastening member 11, and the other end of the first connecting surface of the second sub-fastening member 12 is detachably connected to the other end of the third connecting surface of the first sub-fastening member 11. One end of the first connecting surface of the third sub-fastening 13 is rotatably connected to one end of the third connecting surface of the fourth sub-fastening 14, and the other end of the first connecting surface of the third sub-fastening 13 is detachably connected to the other end of the third connecting surface of the fourth sub-fastening 14. The first sub-fastener, the second sub-fastener, the third sub-fastener and the fourth sub-fastener between one end adopt swivelling joint's mode, the mode of connection can be dismantled to the other end, easy operation, labour saving and time saving during the use can have enough to meet the need reuse moreover after using, has practiced thrift the preparation material.
In a preferred embodiment, the first locking structure 111 and the first rotating structure 112 are respectively disposed at two ends of the third connecting surface of the first sub-fastening 11, and the second rotating structure 121 and the second locking structure 123 are respectively disposed at two ends of the first connecting surface of the second sub-fastening 12. The first rotating structure 112 and the second rotating structure 121 are rotatably connected through a rivet, and the first locking structure 111 and the second locking structure 123 are detachably connected through a T-shaped bolt. A third rotation structure 122 and a third locking structure 124 are respectively arranged at two ends of the second connecting surface of the second sub-fastening member 12, and a fourth rotation structure 131 and a fourth locking structure 133 are respectively arranged at two ends of the second connecting surface of the third sub-fastening member 13. The third rotation structure 122 and the fourth rotation structure 131 are rotatably connected by a rivet, and the third locking structure 124 and the fourth locking structure 133 are detachably connected by a T-bolt. The third sub-fastening member 13 has a fifth rotation structure 132 and a fifth locking structure 134 at two ends of the first connecting surface, and the fourth sub-fastening member 14 has a sixth rotation structure 141 and a sixth locking structure 142 at two ends of the third connecting surface. The fifth rotating structure 132 and the sixth rotating structure 141 are rotatably connected by a rivet, and the fifth locking structure 134 and the sixth locking structure 142 are detachably connected by a T-bolt. Through the rivet swivelling joint and can dismantle the connection through T type bolt, parallel two steel pipe direction of height can be adjusted wantonly, can become the axial atress along the pole setting direction with the eccentric atress of cross fastener, great improvement the stability and the reliability of support body construction.
In a preferred embodiment, the first connecting surface, the second connecting surface and the third connecting surface are semi-circular arc surfaces, the second connecting surface of the second sub-fastener 12 and the second connecting surface of the third sub-fastener 13 have the same inner diameter and are matched with the outer diameter of the single steel pipe 2, the first connecting surface of the second sub-fastener 12 and the third connecting surface of the first sub-fastener 11 have the same inner diameter and are matched with the outer diameter of one of the parallel double steel pipes 3, the first connecting surface of the third sub-fastener 13 and the third connecting surface of the fourth sub-fastener 14 have the same inner diameter and are matched with the outer diameter of the other of the parallel double steel pipes 3, and the axes of the first connecting surface and the second connecting surface are perpendicular to each other.
In a preferred embodiment, the first sub-fastening 11, the second sub-fastening 12, the third sub-fastening 13 and the fourth sub-fastening 14 are all separate open-die castings. The die sinking casting piece alone for this connection fastener tensile strength has obtained the increase, and anti moment of torsion rigidity improves greatly, has security and reliability more.
In a preferred embodiment, the connecting fastener 1 further comprises a nut and a washer, the nut and the washer are used in cooperation with a T-bolt, preferably, the T-bolt is an M12 bolt with a length of 72 ± 0.5mm, the first locking structure 111, the third locking structure 124 and the sixth locking structure 142 are notch structures, the edge thickness of the notch structures is not less than 14mm, the rivet is a rivet with a diameter of 8 ± 0.5mm, the rivet joint is larger than the rivet diameter by 1mm, and the rivet diameter of the rotation center fastener is 10 ± 0.5 mm.
Furthermore, when the connecting fastener 1 is used, the connecting position where the single steel pipe and the double rods are vertically crossed is determined to determine the elevation for installing the connecting fastener and the number of the installed connecting fasteners, then the single steel pipe 1 is inserted between the second connecting surface of the second sub-fastener 12 and the second connecting surface of the third sub-fastener 13, the T-shaped bolt is screwed by rotating the nut, then the two steel pipes parallel to the double steel pipes 2 are respectively inserted between the first connecting surface of the second sub-fastener 12 and the third connecting surface of the first sub-fastener 11 and between the first connecting surface of the third sub-fastener 13 and the third connecting surface of the fourth sub-fastener 14 in sequence, and the T-shaped bolt is screwed by rotating the nut, so that the three steel pipes are connected to form a stable fixed connection system. The operation is convenient and fast, and is stable and reliable.
The above is only a preferred embodiment of the present invention, and is not intended to limit the present invention, and various modifications and changes will occur to those skilled in the art. Any modification, equivalent replacement, improvement or the like made within the spirit and principle of the present invention is included in the scope of the claims of the present invention filed as filed.
Claims (8)
1. The utility model provides a be used for on scaffold parallel double steel pipe and single steel pipe vertically to be connected fastener, its characterized in that, connect fastener (1) and be used for on scaffold parallel double steel pipe (3) and the perpendicular of single steel pipe (2) to be connected, connect fastener (1) and include: a first sub fastener (11), a second sub fastener (12), a third sub fastener (13) and a fourth sub fastener (14);
the second sub-fastener (12) is connected with the third sub-fastener (13), an accommodating space is formed between the second sub-fastener (12) and the third sub-fastener (13), and the single steel pipe (2) is arranged in the accommodating space formed between the second sub-fastener (12) and the third sub-fastener (13);
the first sub-fastener (11) is connected with the second sub-fastener (12), the third sub-fastener (13) is connected with the fourth sub-fastener (14), accommodating spaces are formed between the first sub-fastener (11) and the second sub-fastener (12) and between the third sub-fastener (13) and the fourth sub-fastener (14), and two rods of the parallel double-steel pipe (3) are respectively arranged in the accommodating space formed between the first sub-fastener (11) and the second sub-fastener (12) and in the accommodating space formed between the third sub-fastener (13) and the fourth sub-fastener (14).
2. A connecting fastener for a scaffold parallel double steel pipe perpendicular to a single steel pipe according to claim 1, wherein said second sub fastener (12) and said third sub fastener (13) each comprise a first connecting surface and a second connecting surface, and said first sub fastener (11) and said fourth sub fastener (14) each comprise a third connecting surface, wherein said second connecting surface and said first connecting surface are respectively disposed inside and outside said second sub fastener (12) and said third sub fastener (13);
a second connecting surface of the second sub-fastener (12) and a second connecting surface of the third sub-fastener (13) are oppositely arranged and connected, and an accommodating space formed between the second connecting surface of the second sub-fastener (12) and the second connecting surface of the third sub-fastener (13) is used for arranging the single steel pipe (2);
the first connecting surface of the second sub-fastener (12) and the third connecting surface of the first sub-fastener (11) are oppositely arranged and connected, and an accommodating space formed between the first connecting surface of the second sub-fastener (12) and the third connecting surface of the first sub-fastener (11) is used for arranging one steel pipe in the parallel double steel pipes (3);
the first connecting surface of the third sub-fastener (13) and the third connecting surface of the fourth sub-fastener (14) are oppositely arranged and connected, and an accommodating space formed between the first connecting surface of the third sub-fastener (13) and the third connecting surface of the fourth sub-fastener (14) is used for arranging the other steel pipe in the parallel double steel pipes (3).
3. The connecting fastener for connecting a parallel double steel pipe and a single steel pipe on a scaffold according to claim 2, wherein one end of the second connecting surface of the second sub fastener (12) is rotatably connected with one end of the second connecting surface of the third sub fastener (13), and the other end of the second connecting surface of the second sub fastener (12) is detachably connected with the other end of the second connecting surface of the third sub fastener (13);
one end of the first connecting surface of the second sub-fastener (12) is rotatably connected with one end of the third connecting surface of the first sub-fastener (11), and the other end of the first connecting surface of the second sub-fastener (12) is detachably connected with the other end of the third connecting surface of the first sub-fastener (11);
one end of the first connecting surface of the third sub-fastener (13) is rotatably connected with one end of the third connecting surface of the fourth sub-fastener (14), and the other end of the first connecting surface of the third sub-fastener (13) is detachably connected with the other end of the third connecting surface of the fourth sub-fastener (14).
4. A connecting fastener for a parallel double steel pipe and a single steel pipe perpendicular on a scaffold according to claim 3, wherein the first locking structure (111) and the first rotating structure (112) are respectively provided at two ends of the third connecting surface of the first sub-fastener (11), and the second rotating structure (121) and the second locking structure (123) are respectively provided at two ends of the first connecting surface of the second sub-fastener (12); the first rotating structure (112) and the second rotating structure (121) are rotatably connected through a rivet, and the first locking structure (111) and the second locking structure (123) are detachably connected through a T-shaped bolt.
5. A connecting fastener for connecting a parallel double steel pipe and a single steel pipe on a scaffold according to claim 3, wherein the second connecting surface of the second sub-fastener (12) is provided at both ends thereof with a third rotating structure (122) and a third locking structure (124), respectively, and the second connecting surface of the third sub-fastener (13) is provided at both ends thereof with a fourth rotating structure (131) and a fourth locking structure (133), respectively; the third rotating structure (122) and the fourth rotating structure (131) are rotatably connected through a rivet, and the third locking structure (124) and the fourth locking structure (133) are detachably connected through a T-shaped bolt.
6. A connecting fastener for connecting a parallel double steel pipe and a single steel pipe on a scaffold to be perpendicular to each other according to claim 3, wherein a fifth rotating structure (132) and a fifth locking structure (134) are respectively provided at both ends of the first connecting surface of the third sub-fastener (13), and a sixth rotating structure (141) and a sixth locking structure (142) are respectively provided at both ends of the third connecting surface of the fourth sub-fastener (14); the fifth rotating structure (132) and the sixth rotating structure (141) are rotatably connected through a rivet, and the fifth locking structure (134) and the sixth locking structure (142) are detachably connected through a T-shaped bolt.
7. The connecting fastener for the parallel double steel pipes and the single steel pipe on the scaffold according to claim 2, wherein the first connecting surface, the second connecting surface and the third connecting surface are semi-circular arc surfaces, the second connecting surface of the second sub-fastener (12) and the second connecting surface of the third sub-fastener (13) have the same inner diameter and are matched with the outer diameter of the single steel pipe (2), the first connecting surface of the second sub-fastener (12) and the third connecting surface of the first sub-fastener (11) have the same inner diameter and are matched with the outer diameter of one of the parallel double steel pipes (3), the first connecting surface of the third sub-fastener (13) and the third connecting surface of the fourth sub-fastener (14) have the same inner diameter and are matched with the outer diameter of the other of the parallel double steel pipes (3), and the axes of the first connection face and the second connection face are perpendicular to each other.
8. A connecting fastener for connecting a parallel double steel pipe and a single steel pipe perpendicular to each other on a scaffold according to claim 1, wherein said first sub-fastener (11), said second sub-fastener (12), said third sub-fastener (13) and said fourth sub-fastener (14) are all single open-die castings.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121470787.XU CN214995876U (en) | 2021-06-30 | 2021-06-30 | Connecting fastener for connecting parallel double steel pipes and single steel pipe on scaffold vertically |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121470787.XU CN214995876U (en) | 2021-06-30 | 2021-06-30 | Connecting fastener for connecting parallel double steel pipes and single steel pipe on scaffold vertically |
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| CN214995876U true CN214995876U (en) | 2021-12-03 |
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| CN202121470787.XU Active CN214995876U (en) | 2021-06-30 | 2021-06-30 | Connecting fastener for connecting parallel double steel pipes and single steel pipe on scaffold vertically |
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