Connecting fastener for socket and spigot type disc buckle type steel pipe formwork supporting scaffold
By designing the connecting fastener for the plug-in type coil-button steel pipe formwork support scaffolding, the vertical cross-connection between vertical steel pipe and horizontal steel pipe is achieved, solving the problem that such connection cannot be achieved in the prior art, and improving the main beam The bending and shear strength achieves efficient load-bearing performance and economy.
Patent Information
- Application Number
- CN202421071618.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-05-16
- Publication Date
- 2024-12-31
- Estimated Expiration
- Not applicable · inactive patent
AI Technical Summary
In the plug-in type coil-type steel pipe formwork support scaffolding, there is a lack of fasteners that can achieve vertical cross-connection of one vertical steel pipe with two steel pipes of the same horizontal plane, resulting in the inability to fully utilize the high load-bearing performance of the coil-type vertical rod.
A connecting fastener including the left clamp and the right clamp is designed. The vertical cross connection between the vertical steel pipe and the horizontal steel pipe is realized through hinges and bolts. The connecting part and the connecting part are formed into a semicircular groove to fix the horizontal clamp. Hoop, enhance bending and shear strength.
The effective connection between vertical steel pipes and horizontal steel pipes is achieved, the bending strength and shear strength of the main beam are improved, the bending deformation is reduced, and it is economical and safe, and the high load-bearing performance of the buckle pole is fully utilized.
Smart Images
Figure CN222276149U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to a scaffolding connection fastener technology, in particular to a socket-type disc-type steel pipe formwork supporting scaffolding connection fastener. Background Art
[0002] The socket-type disc-type steel pipe bracket is widely used in the formwork support scaffolding for building concrete construction. Its vertical pole is Q355 steel with a strength design value of 300N / mm2, which is better than the 205N / mm2 of Q235 steel of ordinary steel pipe scaffolding. In the erection of the socket-type disc-type steel pipe formwork support scaffolding, in order to achieve the co-support of beams and plates, the commonly used connecting components are: one is to connect the double-slot joist with the disc-type vertical pole connecting plate, and the other is to connect a single ordinary steel pipe with the disc-type vertical pole through a right-angle fastener. The double-slot joist is a special beam spliced with two channel steels. The cross-sectional resistance moment is generally not less than 57cm3. The shear bearing capacity of the connecting plate on the disc-type vertical pole is 40KN, which can give full play to the high bearing performance of the disc-type vertical pole. Its disadvantage is that it is expensive and has not been widely used. A single steel pipe is used as the main beam of the formwork supporting scaffolding and is connected to the disc-locked uprights through right-angle fasteners. It is widely used, but its cross-sectional resistance moment is generally 4.25cm3, which cannot give full play to the high load-bearing performance of the disc-locked uprights.
[0003] In addition to the above two types of beam and plate co-supporting connection components, a more economical and reasonable connection method is to use two ordinary steel pipes as the formwork support scaffolding main beams. The reason why this connection method has not been used is that there is currently no steel pipe scaffolding fastener that can realize the vertical cross connection of a vertical steel pipe with two steel pipes on the same horizontal plane.
[0004] Therefore, in the application of socket-type disc-type steel pipe formwork supporting scaffolding, a fastener that can realize vertical cross-connection of a vertical steel pipe with two steel pipes on the same horizontal plane is urgently needed to be developed. Summary of the invention
[0005] The utility model aims at the problems existing in the prior art and proposes a socket-type disc-locked steel pipe formwork supporting scaffolding connecting fastener, through which a vertical steel pipe can be vertically cross-connected with two steel pipes on the same horizontal plane.
[0006] The technical solution adopted by the utility model is: a socket-type disc-type steel pipe formwork supporting scaffolding connecting fastener, including a left clamp and a right clamp for fixing the disc-type upright pole, one end of the left clamp and the right clamp are hinged, and the other end can be fixedly connected by bolts.
[0007] The outer sides of the left clamp and the right clamp are provided with connecting parts, and each connecting part is connected to a corresponding connecting part pair. The connecting part pair is hinged to one end of the connecting part, and the other end can be fixedly connected by bolts. The opposite surfaces of the connecting part pair and the connecting part are provided with semicircular grooves, and the connecting part and the connecting part pair constitute a horizontal clamp for fixing the horizontal rod.
[0008] On the basis of the above solution, preferably, the connecting portion is fixed by welding or integrally formed with the corresponding left clamp and right clamp.
[0009] On the basis of the above solution, as a preference, the connection part pair is hinged to the lower end of the connection part, and the upper end is fixedly connected by bolts.
[0010] On the basis of the above solution, preferably, the upper end of the connecting portion has a stepped hole for sinking the bolt head into the connecting portion.
[0011] On the basis of the above scheme, as a preference, the left and right hoops have a connecting column at one end and an extension portion at the other end, the connecting column has a through hole, the pin passes through the through hole on the connecting column to hinge the left and right hoops, and the extension portions of the left and right hoops are fixed by bolts.
[0012] Compared with the prior art, the utility model has the following beneficial effects:
[0013] Through this connection fastener, a vertical steel pipe can be vertically cross-connected with two steel pipes on the same horizontal plane. By using this connection fastener, two steel pipes on the same horizontal plane are used as a main beam, which can fully improve the bending strength and shear strength of the main beam, reduce the bending deformation of the main beam, and give full play to the high load-bearing performance of the socket-type disc-type steel pipe upright. Its economy is significantly better than that of the double-slot support beam, and its safety is significantly better than that of the single steel pipe main beam, enriching the selection range of the main beam of the socket-type disc-type steel pipe formwork frame. BRIEF DESCRIPTION OF THE DRAWINGS
[0014] Figure 1 It is a structural schematic diagram of the utility model;
[0015] Figure 2 yes Figure 1 Rear view of
[0016] Figure 3 yes Figure 1 A top view of
[0017] Figure 4 yes Figure 3 sectional view of
[0018] Figure 5 yes Figure 1 Left view of
[0019] Figure 6It is a stereogram of the utility model. DETAILED DESCRIPTION
[0020] The present invention will be further described below by way of embodiments, but the scope of the present invention is not limited thereto.
[0021] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit the exemplary embodiments according to the utility model. As used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "comprise" and / or "include" are used in this specification, it indicates the presence of features, steps, operations, devices, components and / or combinations thereof.
[0022] The connection fastener developed in this paper is suitable for the erection of socket-type disc-type steel pipe formwork support scaffolding. The application scenario is: double steel pipes are used as the main beam at the bottom of the beam, and the double steel pipe main beam is vertically cross-connected with the disc-type uprights to achieve the co-support of the beam and plate formwork bracket. It can also be called a "double right-angle fastener".
[0023] The material of the fastener casting should be malleable cast iron with mechanical properties not lower than KTH330-08 specified in GB / T9440 or ZG230-450 cast steel specified in GB / T11352.
[0024] Anti-slip performance: When the load is 7.0KN, the displacement of the cross tube is ≤7.00mm; the design value of anti-slip bearing capacity is 8.0KN;
[0025] Anti-destruction performance: When the load is 25.0KN, all parts are not damaged;
[0026] Torsional stiffness performance: When the torque is 900N·m, the displacement value of the torsional stiffness test is ≤70.0mm.
[0027] The fasteners should be subjected to a 65KN·m torque test and there should be no cracks in any part.
[0028] The nominal outer diameter of the steel pipe of the formwork support connected by fasteners is 48.3±0.5mm; the U-shaped opening size of the adjustable support is ≥160mm; the opening distance between the cover plate and the seat is ≥50mm.
[0029] The materials used for T-bolts, nuts, washers and rivets for fasteners shall comply with the relevant provisions of GB / T700. The threads of the bolts and nuts shall comply with the provisions of GB / T196, the thickness of the washers shall comply with the provisions of GB / T95, and the rivets shall comply with the provisions of GB / T867. The total length of the T-bolt M12 is 72±0.5mm, the width of the nut across the flats is 22±0.5mm, and the thickness is 14±0.5mm; the diameter of the rivet is 8±0.5mm, and the rivet head should be 1mm larger than the diameter of the rivet hole.
[0030] Specifically, Figure 1-6 As shown, a socket-type disc-type steel pipe formwork supporting scaffolding connecting fastener (double right-angle fastener) includes a left clamp 1 and a right clamp 2 for fixing the disc-type upright 7, one end of the left clamp and the right clamp are hinged, and the other end can be fixedly connected by bolts, the outer side surfaces of the left clamp and the right clamp are provided with a connecting part 3, each connecting part is correspondingly connected to a connecting part pair 4, the connecting part pair is hinged to one end of the connecting part, and the other end can be fixedly connected by bolts, the opposite surface of the connecting part pair and the connecting part are provided with a semicircular groove 5, and the connecting part and the connecting part pair constitute a horizontal clamp for fixing a horizontal rod 6.
[0031] The connecting part is fixed by welding or integrally formed with the corresponding left clamp and right clamp.
[0032] The connection part pair is hinged to the lower end of the connection part, and the upper end is fixedly connected by bolts.
[0033] The upper end of the connecting part is provided with a stepped hole for sinking the bolt head into the connecting part.
[0034] One end of the left and right hoops has a connecting column, and the other end has an extension part 9. The connecting column has a through hole. The pin 8 passes through the through hole on the connecting column to hinge the left and right hoops. The extension parts of the left and right hoops are fixed by bolts.
[0035] It should be noted that the embodiments described above are only used to explain the utility model and do not constitute any limitation to the utility model. The utility model is described by reference to typical embodiments, but it should be understood that the words used therein are descriptive and explanatory words, rather than restrictive words. The utility model can be modified as specified within the scope of the claims of the utility model, and the utility model can be revised without departing from the scope and spirit of the utility model. Although the utility model described therein involves specific methods, materials and embodiments, it does not mean that the utility model is limited to the specific examples disclosed therein. On the contrary, the utility model can be extended to all other methods and applications with the same functions.
Claims
1. A socket-type disc-type steel pipe formwork support scaffolding connection fastener, characterized in that: It includes a left clamp and a right clamp for fixing to the buckle pole. One end of the left clamp and the right clamp are hinged, and the other end can be fixedly connected by bolts. The outer sides of the left clamp and the right clamp are provided with connecting parts, and each connecting part is connected to a corresponding connecting part pair. The connecting part pair is hinged to one end of the connecting part, and the other end can be fixedly connected by bolts. The opposite surfaces of the connecting part pair and the connecting part are provided with semicircular grooves, and the connecting part and the connecting part pair constitute a horizontal clamp for fixing the horizontal rod.
2. The socket-type disc-type steel pipe formwork support scaffolding connection fastener as claimed in claim 1, characterized in that: The connecting part is fixed by welding or integrally formed with the corresponding left clamp and right clamp.
3. The socket-type disc-type steel pipe formwork support scaffolding connection fastener as claimed in claim 1, characterized in that: The connection part pair is hinged to the lower end of the connection part, and the upper end is fixedly connected by bolts.
4. The socket-type disc-type steel pipe formwork support scaffolding connection fastener as claimed in claim 3 is characterized in that: The upper end of the connecting part is provided with a stepped hole for sinking the bolt head into the connecting part.
5. The socket-type disc-type steel pipe formwork support scaffolding connection fastener as claimed in claim 1, characterized in that: One end of the left and right hoops is provided with a connecting column, and the other end is provided with an extension part. The connecting column is provided with a through hole. The pin shaft passes through the through hole on the connecting column to hinge the left and right hoops. The extension parts of the left and right hoops are fixed by bolts.