48-pin handrail anti-falling and anti-skid fastener

Abstract

The utility model relates to building construction machinery technical field discloses a kind of pipe scaffold anti-falling antiskid fastener, including No.48 pipe, No.48 pipe, the adjacent end of No.48 pipe is fixedly connected with No.1 fastener by No.48 pipe, the end of No.48 pipe is fixedly connected with No.2 fastener by No.48 pipe, the top surface of No.1 fastener and No.2 fastener bottom respectively are equipped with joint groove, the number of joint groove is two, thread hole A and thread hole B are respectively equipped on each joint groove, the inner wall of thread hole A and thread hole B is respectively threadedly connected with bolt. In the utility model, by the cooperation of positioning protrusion, positioning groove and positioning ball, spring, realize No.1 fastener and No.2 fastener fast and accurate butt joint, fastener and pipe connection are stable by welding fixation, cooperate the locking of bolt and nut, effectively prevent scaffold fastener from falling off in use, improve installation efficiency and connection reliability.

Description

Technical Field

[0001] This utility model relates to the field of construction machinery technology, and in particular to a 48-tube scaffolding anti-fall and anti-slip fastener. Background Technology

[0002] In the existing technology, the 48mm pipe scaffolding anti-fall and anti-slip fastener is a connecting component used in the construction field to fix 48mm specification steel pipes. It fixes two or more 48mm pipes through clamping or locking structures to form a stable scaffolding frame. It has both anti-fall and anti-slip functions and is the core component to ensure the overall stability of the scaffolding.

[0003] The usual steps for using this type of fastener in the prior art are as follows: First, attach the two halves of the fastener body to the 48mm pipe to be connected, adjust the position of the fastener so that the bolt holes on the body are aligned, pass the bolt through the aligned bolt holes, then put the nut into the exposed end of the bolt, and tighten the nut with a wrench or other tools to clamp the fastener body with the 48mm pipe, thus completing the connection and fixation of the two 48mm pipes. Multiple fasteners work together to achieve the erection of scaffolding.

[0004] In the aforementioned usage, existing fasteners lack a dedicated positioning structure, requiring repeated adjustments to bolt hole alignment, resulting in low installation efficiency. Furthermore, the connection between the fastener and the 48mm pipe relies primarily on the clamping force of the bolts; under long-term use, factors such as vibration and load changes can easily cause loosening, affecting the stability of the connection and making it difficult to fully prevent detachment. This hinders the rapid achievement of precise alignment and long-term reliable fixation. Therefore, a new anti-detachment and anti-slip fastener for 48mm pipe scaffolding is proposed to address these issues. Utility Model Content

[0005] To overcome the above shortcomings, this utility model provides a 48-tube scaffolding anti-fall and anti-slip fastener, which aims to solve the problems of inconvenient docking and positioning, low installation efficiency, insufficient connection stability, and easy risk of falling off in the existing 48-tube scaffolding fastener.

[0006] To achieve the above objectives, the present invention adopts the following technical solution: a scaffolding anti-fall and anti-slip fastener, comprising a No. 1 48 pipe and a No. 2 48 pipe, wherein a No. 1 fastener is fixedly connected to the end of the No. 1 48 pipe adjacent to the No. 2 48 pipe, and a No. 2 fastener is fixedly connected to the end of the No. 2 48 pipe adjacent to the No. 1 48 pipe. The top surface of the No. 1 fastener and the bottom surface of the No. 2 fastener are respectively provided with a joint groove, and the number of joint grooves is two. Each joint groove is provided with a threaded hole A and a threaded hole B. The inner walls of the threaded holes A and B are respectively threaded with bolts, and the threads on the surface of the bolts are respectively threaded with nuts. Both the No. 1 fastener and the No. 2 fastener are provided with positioning components. The positioning component includes a positioning protrusion, which is fixedly connected to the side of the threaded hole B near the engagement groove. The engagement groove has a positioning groove near the threaded hole A. The positioning protrusion is fixedly connected to the engagement groove near the threaded hole B. A groove is formed on the outer side of the positioning protrusion. A disc is connected to the inner wall of the groove. A positioning ball is embedded at one end of the disc. The other end of the disc is elastically connected to the inner wall of the groove by a spring. A positioning groove is formed on the inner wall of the positioning groove. The surface of the positioning ball abuts against the inner wall of the positioning groove.

[0007] As a further description of the above technical solution: the outer surfaces of the first fastener and the second fastener are respectively provided with slots, the bolt and nut are both located on the inner wall of the slot, and the nut is tightly fitted to the inner wall of the slot.

[0008] As a further description of the above technical solution: one end of the spring is fixedly connected to the inner wall of the groove, and the other end of the spring is fixedly connected to the other end of the disc.

[0009] As a further description of the above technical solution: both the positioning protrusion and the positioning groove are annular in shape, and the positioning protrusion is adapted to the positioning groove.

[0010] As a further description of the above technical solution: the edge of the disk is slidably connected to the inner wall of the groove.

[0011] As a further description of the above technical solution: the positioning groove is arc-shaped and the number of openings is several, and the multiple sets of positioning grooves are distributed circumferentially at equal intervals on the inner wall of the positioning groove.

[0012] This utility model has the following beneficial effects: 1. In this utility model, the positioning protrusion, positioning groove, positioning ball, and spring work together to achieve quick and accurate docking of fastener No. 1 and fastener No. 2. The welded and fixed fastener is firmly connected to the pipe. With the locking of bolts and nuts, the fastener is effectively prevented from falling off during the use of scaffolding, thus improving installation efficiency and connection reliability.

[0013] 2. In this utility model, the groove and nut fit tightly and the mating surface is frosted, the threaded hole and bolt are precisely matched, and the positioning component provides multi-point positioning, which enhances the overall anti-slip and anti-loosening performance. At the same time, the structure is simple and easy to operate, and it can adapt to standard pipe sizes, ensuring the safety and long-term stability of scaffolding. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the main structure of a 48-tube scaffolding anti-fall and anti-slip fastener proposed in this utility model; Figure 2 An exploded view of a 48-tube scaffolding anti-fall and anti-slip fastener proposed in this utility model; Figure 3 This is a cross-sectional schematic diagram of the combined anti-fall and anti-slip fastener for 48-tube scaffolding proposed in this utility model; Figure 4 This utility model proposes a 48mm tube scaffolding anti-fall and anti-slip fastener. Figure 3 Enlarged view of point A in the middle.

[0015] Legend: 1. No. 48 tube; 2. No. 48 tube; 3. No. 1 fastener; 4. No. 2 fastener; 5. Bolt; 6. Nut; 7. Positioning protrusion; 8. Groove; 9. Spring; 10. Disc; 11. Positioning ball; 12. Positioning groove; 13. Positioning recess; 14. Slot. Detailed Implementation

[0016] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0017] Reference Figure 1 , Figure 2 The present invention provides an embodiment of a 48mm tube scaffolding anti-fall and anti-slip fastener, comprising a No. 1 48mm tube 1 and a No. 2 48mm tube 2. A No. 1 fastener 3 is fixedly connected to the end of the No. 1 48mm tube 1 adjacent to the No. 2 48mm tube 2 by welding. The weld joint forms a closed weld seam around the outer wall of the No. 1 48mm tube 1 and the inner wall of the No. 1 fastener 3, enhancing the connection strength. A No. 2 fastener 4 is fixedly connected to the end of the No. 2 48mm tube 2 adjacent to the No. 1 48mm tube 1 by welding. The weld joint has the same welding structure as the No. 1 48mm tube 1 and the No. 1 fastener 3, ensuring balanced stress. A joint groove is respectively formed on the top surface of the No. 1 fastener 3 and the bottom surface of the No. 2 fastener 4. The width of the joint groove is the same as that of the No. 1 fastener 3 and the No. 2 fastener 4. The mating surface thickness of fastener 4 is suitable, the groove depth is 5-8mm, and there are two mating grooves, symmetrically distributed on both sides of fastener 3 and fastener 4. Each mating groove has a threaded hole A and a threaded hole B. The diameter of threaded hole A and threaded hole B matches the thread specification of bolt 5, and the thread accuracy is 6H. Bolt 5 is threaded to the inner wall of threaded hole A and threaded hole B respectively. Bolt 5 adopts a full thread structure, and the length of the screw is greater than the total mating thickness of fastener 3 and fastener 4. Nut 6 is threaded to the threaded part of bolt 5. Nut 6 is a hexagonal lock nut that perfectly matches the thread profile of bolt 5. Positioning components are provided on fastener 3 and fastener 4 respectively.

[0018] Reference Figure 3 ,Figure 4 The positioning component includes a positioning protrusion 7, which is fixedly connected to the side of the threaded hole B near the engagement groove. The connection method is integral molding. The height of the positioning protrusion 7 is 3-5mm. The engagement groove near the threaded hole A has a positioning groove 13. The groove diameter of the positioning groove 13 is clearance-fitted with the outer diameter of the positioning protrusion 7, with a clearance value of 0.1-0.2mm. The engagement groove near the threaded hole B is fixedly connected to the positioning protrusion 7, which is integrally molded and coaxially arranged with the positioning protrusion 7 on the other side. Both the positioning protrusion 7 and the positioning groove 13 are annular in shape. The positioning protrusion 7 and the positioning groove 13 are adapted to each other. The fitting gap ensures that the positioning protrusion 7 can be smoothly embedded into the positioning groove 13 without obvious shaking.

[0019] Reference Figure 3 , Figure 4 A groove 8 is provided on the outer side of the positioning protrusion 7. The groove 8 is a cylindrical groove with a diameter 0.05-0.1mm larger than the diameter of the disc 10. The disc 10 is connected to the inner wall of the groove 8. The edge of the disc 10 is slidably connected to the inner wall of the groove 8. The sliding fit clearance ensures that the disc 10 can extend and retract flexibly without jamming. A positioning ball 11 is embedded at one end of the disc 10. The diameter of the positioning ball 11 is 2-3mm, and the depth of embedding in the disc 10 is 1 / 2 of its own diameter. The other end of the disc 10 is elastically connected to the inner wall of the groove 8 by a spring 9. The spring 9 is a cylindrical helical compression spring. In its natural state, its length is greater than the depth of the groove 8. One end of the spring 9 is fixedly connected to the inner wall of the groove 8. The connection method is welding, and the welding point is located at the center of the inner wall of the groove 8. The other end of the spring 9 is fixedly connected to the other end of the disc 10 by welding to ensure that the spring 9 does not deviate when under force. The inner wall of the positioning groove 13 is provided with a positioning groove 12. The groove diameter of the positioning groove 12 is adapted to the diameter of the positioning ball 11, with a fit greater than 90%. The surface of the positioning ball 11 abuts against the inner wall of the positioning groove 12, forming point contact pressure when abutting, which enhances the positioning stability. The positioning groove 12 is arc-shaped and there are several sets. Multiple sets of positioning grooves 12 are equidistantly distributed on the inner wall of the positioning groove 13. The central angle between two adjacent sets of positioning grooves 12 is 30°, which improves the flexibility of positioning adjustment.

[0020] Reference Figure 2 , Figure 3 The outer surfaces of fastener 3 and fastener 4 are respectively provided with slots 14. The slots 14 are U-shaped structures with the opening facing away from the 48 tube. The depth of the slots 14 is adapted to the thickness of the nut 6, and the width is slightly larger than the head diameter of the bolt 5. The bolt 5 and the nut 6 are both located on the inner wall of the slots 14. A gap of 0.5-1mm is reserved between the head of the bolt 5 and the inner wall of the slots 14. The circumferential side of the nut 6 is fully fitted with the inner wall of the slots 14. The nut 6 is tightly fitted with the inner wall of the slots 14. The mating surface is frosted to increase the friction coefficient and prevent the nut 6 from rotating in the slots 14.

[0021] Working principle: First, fix fastener 3 to pipe 1 (48mm) and fastener 4 to pipe 2 (48mm) in place. Then, align the groove of fastener 3 with the groove of fastener 4, so that the positioning protrusion 7 is embedded in the positioning groove 13. During the embedding process, the inner wall of the positioning groove 13 presses against the positioning ball 11, pushing the disc 10 to compress the spring 9. When the positioning ball 11 moves to the position of the positioning groove 12, the spring 9 returns to its original position, pushing the disc 10 to engage the positioning ball 11 into the positioning groove 12, completing the initial positioning of fastener 3 and fastener 4. Next, unscrew the bolt 5 from the thread of fastener 3. Insert the bolt 6 through hole A, and after passing through the threaded hole B of fastener 4, place the nut 6 into the slot 14 and thread it with the bolt 5. Tighten the bolt 5 and nut with a tool to make the nut 6 fit tightly against the inner wall of the slot 14, further locking fastener 3 and fastener 4, and achieving a stable connection between the two 48 tubes. When disassembling, loosen the bolt 5 and nut 6 in the opposite direction to disengage the bolt 5 from the threaded holes A and B. Then apply external force to disengage the positioning ball 11 from the positioning groove 12. After compressing the spring 9, the positioning protrusion 7 can be removed from the positioning groove 13, separating fastener 3 and fastener 4, and then disassembling the two 48 tubes.

[0022] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A type of anti-fall and anti-slip fastener for 48mm scaffolding, comprising a No. 1 48mm pipe (1) and a No. 2 48mm pipe (2), characterized in that: One fastener (3) is fixedly connected to the end of the No. 1 48 pipe (1) adjacent to the No. 2 48 pipe (2), and a No. 2 fastener (4) is fixedly connected to the end of the No. 2 48 pipe (2) adjacent to the No. 1 48 pipe (1). The top surface of the No. 1 fastener (3) and the bottom surface of the No. 2 fastener (4) are respectively provided with a joint groove. There are two joint grooves. Each joint groove is provided with a threaded hole A and a threaded hole B. The inner walls of the threaded holes A and B are respectively threaded with bolts (5). Nuts (6) are respectively threaded at the surface threads of the bolts (5). Positioning components are provided on both the No. 1 fastener (3) and the No. 2 fastener (4). The positioning component includes a positioning protrusion (7), which is fixedly connected to the side of the threaded hole B near the engagement groove. The engagement groove near the threaded hole A has a positioning groove (13), and the engagement groove near the threaded hole B has a fixedly connected positioning protrusion (7). The outer side of the positioning protrusion (7) has a groove (8), and the inner wall of the groove (8) is connected to a disc (10). One end of the disc (10) is fitted with a positioning ball (11), and the other end of the disc (10) is elastically connected to the inner wall of the groove (8) by a spring (9). The inner wall of the positioning groove (13) has a positioning groove (12), and the surface of the positioning ball (11) abuts against the inner wall of the positioning groove (12).

2. The anti-fall and anti-slip fastener for 48mm scaffolding according to claim 1, characterized in that: The outer surfaces of fastener No. 1 (3) and fastener No. 2 (4) are respectively provided with slots (14), and the bolt (5) and nut (6) are located on the inner wall of the slot (14), and the nut (6) is tightly fitted to the inner wall of the slot (14).

3. The anti-fall and anti-slip fastener for 48mm scaffolding according to claim 1, characterized in that: One end of the spring (9) is fixedly connected to the inner wall of the groove (8), and the other end of the spring (9) is fixedly connected to the other end of the disc (10).

4. The anti-fall and anti-slip fastener for 48mm scaffolding according to claim 1, characterized in that: The positioning protrusion (7) and the positioning groove (13) are both ring-shaped, and the positioning protrusion (7) and the positioning groove (13) are adapted to each other.

5. The anti-fall and anti-slip fastener for 48mm scaffolding according to claim 1, characterized in that: The edge of the disk (10) is slidably connected to the inner wall of the groove (8).

6. The anti-fall and anti-slip fastener for 48mm scaffolding according to claim 1, characterized in that: The positioning groove (12) is arc-shaped and the number of openings is several. The multiple sets of positioning grooves (12) are circumferentially distributed on the inner wall of the positioning groove (13).

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