Scaffold fastener

Abstract

The utility model discloses a scaffold fastener relates to the field of building scaffold, and the scaffold fastener includes center pole, fixed disc, first arc plate, second arc plate, locking mechanism, and the fixed disc is fixed in the middle part of center pole, and one side of fixed disc is equipped with first lug, is equipped with the pivot on first lug, one side of first arc plate is equipped with second lug, and second lug rotatory setting is in pivot, one side of second arc plate is equipped with third lug, and third lug rotatory setting is in pivot, and locking mechanism is located in the side of first arc plate and second arc plate away from lug, is used for fixed first arc plate and second arc plate. The other side of first arc plate and second arc plate all is equipped with the clamping tooth structure, and when the scaffold fastener is in the closed state, two clamping tooth structures interlock. The utility model aims at solving the problem that traditional fastener is easy to deform, and the problem of inaccurate positioning is solved, improves steel pipe assembly stability, prolongs the service life of fastener and ensures construction safety.

Description

Technical Field

[0001] This utility model relates to the field of building scaffolding technology, and in particular to a scaffolding coupler. Background Technology

[0002] During scaffolding assembly, various fasteners are used to connect and fix steel pipes. Among these, butt-joint fasteners are key components used to extend two steel pipes by joining them, and are widely used in the extension of vertical pipes, horizontal pipes, and diagonal braces. Existing butt-joint fasteners typically employ a design where a central rod is inserted into the steel pipe, coupled with rotatable arc-shaped plates on both sides of the central rod and a threaded rod and nut locking structure. However, this traditional structure has significant drawbacks: the stress generated during the pipe joining is concentrated on the rotating shaft and the threaded rod and nut, causing the arc-shaped plates to easily undergo plastic deformation after repeated use. This deformation leads to misalignment of the two arc-shaped plates in the vertical direction, not only reducing the stability of the steel pipe assembly but also accelerating the wear of the threaded rod, creating a vicious cycle that directly affects the service life of the fasteners and construction safety. Utility Model Content

[0003] The main purpose of this utility model is to propose a scaffolding coupler that aims to solve the problems of easy deformation and inaccurate positioning of traditional couplers, improve the stability of steel pipe assembly, extend the service life of the coupler, and ensure construction safety.

[0004] To achieve the above objectives, the scaffolding coupler proposed in this utility model includes: Center rod; A fixed plate is fixed to the middle of the central rod. A first protrusion is provided on one side of the fixed plate, and a rotating shaft is provided on the first protrusion. A first arc-shaped plate, wherein a second protrusion is provided on one side of the first arc-shaped plate, and the second protrusion is rotatably mounted on the rotating shaft; The second arc-shaped plate has a third protrusion on one side, and the third protrusion is rotatably mounted on the rotating shaft; A locking mechanism is located on the side of the first arc-shaped plate and the second arc-shaped plate away from the protrusion, for fixing the first arc-shaped plate and the second arc-shaped plate; The scaffolding fastener has an open state and a closed state. Both the first arc plate and the second arc plate are provided with a locking tooth structure on the other side. When the scaffolding fastener is in the closed state, the two locking tooth structures mesh with each other to avoid vertical misalignment.

[0005] In one embodiment, a plurality of retaining blocks are provided on the side protrusion where the first arc plate and the second arc plate meet, and a groove is provided between the plurality of retaining blocks. The retaining blocks on the first arc plate are inserted into the grooves on the second arc plate, and the retaining blocks on the second arc plate are inserted into the grooves on the first arc plate.

[0006] In one embodiment, the thickness of the holding block is less than the thickness of the first arc plate and the second arc plate. The groove is formed by the sidewalls of the first arc plate and the second arc plate and the groove at the end is connected but does not extend to both sides to form a stepped structure. This arrangement ensures the longitudinal holding of the first arc plate and the second arc plate and also assists in horizontal positioning.

[0007] In one embodiment, the locking mechanism includes a lead screw and a nut.

[0008] In one embodiment, a first fixing plate is provided at one end of the first arc-shaped plate, and a second fixing plate is provided at one end of the second arc-shaped plate. The first fixing plate and the second fixing plate are attached together. The lead screw is fixed to the first fixing plate. The second fixing plate is provided with a notch. During the opening or closing process, the lead screw leaves or enters the notch.

[0009] In one embodiment, there are two of each of the second and third bumps, with the two second bumps located at both ends close to the first bump and the two third bumps located outside the two second bumps.

[0010] In one embodiment, the scaffold fastener further includes a holding mechanism, which holds the second protrusion and the third protrusion in the open state to prevent the arc plate from colliding due to excessive opening angle, and holds the second protrusion and the third protrusion in the closed state to ensure that the locking position is consistent each time it is closed.

[0011] In one embodiment, the abutting mechanism includes a fixed rod disposed on the fixed plate. The second protrusion and the third protrusion are each provided with an opening abutting member, which is used to abut against the fixed rod in the open state. The second protrusion and the third protrusion are each provided with a closing abutting member, which is used to abut against the fixed rod in the closed state.

[0012] In one embodiment, both the opening and closing abutments are elastic elements, which provide position compensation after the scaffold fasteners undergo slight deformation due to prolonged use.

[0013] In one embodiment, both the upper and lower ends of the first arc-shaped plate and the second arc-shaped plate are provided with guide inclined plates, which are used to assist in guiding the steel pipe.

[0014] As can be seen from the above, the scaffolding coupler provided in this application effectively solves the problems of easy deformation and inaccurate positioning of traditional couplers by setting a tooth structure, a clamping block and groove matching structure, and an elastic support mechanism. It has the advantages of improving the stability of steel pipe assembly, extending the service life of couplers, and ensuring construction safety. Attached Figure Description

[0015] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.

[0016] Figure 1 A three-dimensional structural schematic diagram of an embodiment of the scaffolding coupler provided by this utility model; Figure 2 This is a schematic diagram of the closed structure; Figure 3 This is a schematic diagram of the first explosion; Figure 4 This is a schematic diagram of the second explosion; Figure 5 This is a diagram showing the open state.

[0017] Explanation of icon numbers: 1000. Scaffolding coupler; 1. Center pole; 2. Fixing plate; 21. Fixing rod; 3. First arc plate; 31. Second protrusion; 32. Clamping block; 33. Groove; 34. First fixing plate; 35. Opening support; 36. Closing support; 4. Second arc plate; 41. Third protrusion; 42. Second fixing plate; 43. Notch; 5. Locking mechanism; 51. Screw rod; 52. Nut; 6. Guide inclined plate; 7. Steel pipe.

[0018] The realization of the purpose, functional features and advantages of this utility model will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0019] 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.

[0020] It should be noted that if the embodiments of this utility model involve directional indicators (such as up, down, left, right, front, back, etc.), the directional indicators are only used to explain the relative positional relationship and movement of the components in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indicators will also change accordingly.

[0021] Furthermore, if the embodiments of this utility model involve descriptions such as "first" or "second," these descriptions are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of indicated technical features. Therefore, features defined with "first" or "second" may explicitly or implicitly include at least one of those features. Additionally, the technical solutions of the various embodiments can be combined with each other, but this must be based on the ability of those skilled in the art to implement them. If the combination of technical solutions is contradictory or impossible to implement, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection claimed by this utility model.

[0022] Please see Figures 1 to 5 This application discloses a scaffolding coupler 1000, including a center rod 1, a fixing plate 2, a first arc-shaped plate 3, a second arc-shaped plate 4, and a locking mechanism 5. The fixing plate 2 is fixed to the center rod 1, and a first protrusion is provided on one side of the fixing plate 2, with a rotating shaft on the first protrusion. A second protrusion 31 is provided on one side of the first arc-shaped plate 3, and the second protrusion 31 is rotatably mounted on the rotating shaft. A third protrusion 41 is provided on one side of the second arc-shaped plate 4, and the third protrusion 41 is rotatably mounted on the rotating shaft. The locking mechanism 5 is located on the side of the first arc-shaped plate 3 and the second arc-shaped plate 4 away from the protrusions, and is used to fix the first arc-shaped plate 3 and the second arc-shaped plate 4. The scaffolding coupler 1000 has an open state and a closed state. A locking tooth structure is provided on the other side of both the first arc-shaped plate 3 and the second arc-shaped plate 4. When the scaffolding coupler 1000 is in the closed state, the two locking tooth structures mesh with each other to prevent vertical misalignment.

[0023] The first protrusion can be integrally formed with the fixed plate 2, or it can be fixed by welding or bolting. The rotating shaft can be a pin, bolt, or other rotatable connector. The curvature of the first arc plate 3 and the second arc plate 4 can be adjusted according to the diameter of the steel pipe 7, and is usually semi-circular or close to semi-circular. The locking structure can be a continuous sawtooth structure, or it can be a series of protrusions and grooves 33. The locking mechanism 5 can adopt a screw 51 and nut 52 structure, a snap-fit ​​structure, or other detachable fixing methods.

[0024] This technical solution effectively solves the problem of vertical misalignment that easily occurs in existing butt couplers after prolonged use by setting up an interlocking tooth structure. When the scaffold coupler 1000 is in the closed state, the two tooth structures interlock to form a stable mechanical connection, capable of withstanding the stress at the joint of the steel pipe 7 and preventing relative displacement of the curved plates. When the scaffold coupler 1000 is closed from the open state, the first curved plate 3 and the second curved plate 4 can only be properly closed and locked after the tooth structure is engaged, avoiding the unstable fixation caused by locking before reaching the correct position. The setting of the pivot and the protrusion allows the curved plates to rotate flexibly, facilitating the installation and disassembly of the steel pipe 7. The locking mechanism 5 further ensures the stability of the coupler in the closed state. Compared with the prior art, this solution has a simple and reliable structure, which can significantly improve the stability of the steel pipe 7 connection and extend the service life of the coupler.

[0025] Please see Figures 1 to 5 Furthermore, this application also proposes that a plurality of retaining blocks 32 are provided on the side where the first arc plate 3 and the second arc plate 4 are connected, and a groove 33 is provided between the plurality of retaining blocks 32. The retaining blocks 32 on the first arc plate 3 are inserted into the groove 33 on the second arc plate 4, and the retaining blocks 32 on the second arc plate 4 are inserted into the groove 33 on the first arc plate 3.

[0026] Specifically, the thickness of the retaining block 32 is less than the thickness of the first arc-shaped plate 3 and the second arc-shaped plate 4. The groove 33 is formed by openings in the side walls of the first arc-shaped plate 3 and the second arc-shaped plate 4, and is connected to the end slots but does not extend to both sides, thus forming a stepped structure. In a preferred embodiment, the retaining block 32 can be rectangular, trapezoidal, or other shapes that enable stable insertion. The size of the groove 33 matches the retaining block 32 to ensure that there is no loosening after insertion. Furthermore, the number of retaining blocks 32 and grooves 33 can be adjusted according to actual needs, for example, 2-4 sets can be provided to enhance connection stability.

[0027] Therefore, this technical solution, through the interlocking of the retaining block 32 and the groove 33, not only ensures the longitudinal holding of the first arc-shaped plate 3 and the second arc-shaped plate 4, but also assists in horizontal positioning, thereby effectively avoiding deformation and misalignment problems caused by prolonged use. Compared with existing technologies, this structure simplifies the assembly process and improves the reliability of repeated use while ensuring the stability of the fasteners.

[0028] The thickness of the retaining block 32 is designed to be less than the thickness of the main body of the arc-shaped plate, and this dimensional difference forms a stepped mating structure. The groove 33 is machined using a sidewall grooving process, with the groove extending along the length of the arc-shaped plate while retaining the integrity of both side walls. As a preferred embodiment, the retaining block 32 can have a trapezoidal cross-section design, with its top width slightly smaller than its bottom width, to enhance guidance during insertion. In another embodiment, the surface of the retaining block 32 can be coated with a wear-resistant coating, and the inner wall of the groove 33 can be machined with lubrication channels to reduce frictional wear during long-term use.

[0029] Please see Figures 1 to 5 Furthermore, this application also proposes that the locking mechanism 5 includes a lead screw 51 and a nut 52. Specifically, the lead screw 51 is threadedly connected to the nut 52, and when the nut 52 rotates, it can move axially along the lead screw 51, thereby achieving the fastening or loosening of the first arc-shaped plate 3 and the second arc-shaped plate 4.

[0030] Furthermore, this application also proposes that a first fixing plate 34 is provided at one end of the first arc plate 3, and a second fixing plate 42 is provided at one end of the second arc plate 4. The first fixing plate 34 and the second fixing plate 42 are fitted together, and the lead screw 51 is fixed to the first fixing plate 34. The second fixing plate 42 is provided with a notch 43. During the opening or closing process, the lead screw 51 leaves or enters the notch 43.

[0031] Specifically, the first fixing plate 34 and the second fixing plate 42 are positioned by planar contact, wherein the first fixing plate 34 and the lead rod 51 can be fixed by welding or threaded connection. The notch 43 is preferably a U-shaped groove, the width of which is slightly larger than the diameter of the lead rod 51 to allow the lead rod 51 to move in and out smoothly. As a preferred embodiment, a guide slope can be provided on the edge of the notch 43 to assist the lead rod 51 in entering. In the closed state, the lead rod 51 completely passes through the notch 43 and is locked by the nut 52, at which time the first fixing plate 34 and the second fixing plate 42 form a rigid connection; in the open state, the lead rod 51 moves along the trajectory of the notch 43 until it is completely out of the notch 43 range, allowing the arc plate to rotate freely.

[0032] Therefore, this technical solution achieves a separable design for the locking mechanism 5 by setting a mating structure between the second fixing plate 42 with a notch 43 and the lead screw 51. During operation, the mating of the lead screw 51 and the notch 43 ensures rigid locking in the closed state and eliminates the need to completely disassemble the nut 52 during the opening process, significantly improving operational efficiency. Simultaneously, the fixing plate distributes the force on the lead screw 51, effectively mitigating the deformation problem caused by direct force on the end of the arc-shaped plate in existing technologies. This structure ensures the consistency of the locking position during each closure through mechanical limiting, solving the assembly deviation problem caused by repeated use.

[0033] Please see Figures 1 to 5 Furthermore, this application also proposes that there are two second protrusions 31 and two third protrusions 41, with the two second protrusions 31 located at both ends close to the first protrusion, and the two third protrusions 41 located outside the two second protrusions 31.

[0034] Specifically, the number of second protrusions 31 and third protrusions 41 is increased to two. The two second protrusions 31 are respectively located at both ends of the first arc-shaped plate 3 near the first protrusion, while the two third protrusions 41 are located on the outer sides of the two second protrusions 31. In a preferred embodiment, the second protrusions 31 and third protrusions 41 can be symmetrically distributed on both sides of the rotating shaft, thereby forming a four-point support structure. With the two second protrusions 31 located at the ends near the first protrusion and the two third protrusions 41 located on the outer sides, this arrangement effectively disperses stress during rotation, avoiding structural deformation caused by excessive force at a single point.

[0035] Please see Figures 1 to 5 Furthermore, this application also proposes a holding mechanism, which is used to hold the second protrusion 31 and the third protrusion 41 in the open state to prevent the arc plate from colliding due to excessive opening angle, and to hold the second protrusion 31 and the third protrusion 41 in the closed state to ensure that the locking position is consistent each time it is closed.

[0036] Specifically, this application also proposes that the abutment mechanism includes a fixed rod 21, which is disposed on the fixed plate 2. The second protrusion 31 and the third protrusion 41 are each provided with an opening abutment 35, which is used to abut against the fixed rod 21 in the open state. The second protrusion 31 and the third protrusion 41 are each provided with a closing abutment 36, which is used to abut against the fixed rod 21 in the closed state.

[0037] The fixing rod 21 can be a round or square metal rod, which is fixed to the side of the fixing plate 2 by welding or bolting. The opening support 35 and the closing support 36 can be made of elastic materials such as rubber blocks, polyurethane buffer blocks or spring steel sheets. The rubber blocks can be integrally formed with the protrusion through a vulcanization process, the polyurethane buffer blocks can be fixed by bolts, and the spring steel sheets can be welded to the side of the protrusion.

[0038] Therefore, this technical solution achieves a dual limiting function through the cooperation of the fixed rod 21 and two types of abutment members: in the open state, the open abutment member 35 contacts the fixed rod 21 to form a mechanical stop, effectively preventing the arc plate from over-opening due to inertia; in the closed state, the rigid contact between the closed abutment member 36 and the fixed rod 21 ensures that the arc plate maintains the same closing angle each time it is locked. The use of an elastic material gives the abutment member deformation compensation capability, maintaining a stable limiting effect even when the rotating parts experience wear or slight deformation. Compared with existing technologies, this design solves the positioning accuracy problem of the rotating parts while maintaining structural simplicity and avoiding component damage caused by impact loads.

[0039] Please see Figures 1 to 5 Furthermore, this application also proposes that both the opening support 35 and the closing support 36 are elastic elements, and that the elastic elements have a position compensation function after the scaffolding fastener 1000 undergoes slight deformation after long-term use.

[0040] Specifically, the elastic element can be made of materials with elastic deformation capabilities, such as helical springs, rubber blocks, or metal sheets. In a preferred embodiment, the helical spring is fixed to the second protrusion 31 and the third protrusion 41 by welding or bolting, with its free end in contact with the fixing rod 21. When the scaffold fastener 1000 is in the open or closed state, the elastic element absorbs the displacement deviation of the rotating components through its own deformation. For example, in the open state, the spring of the open abutment 35 is compressed, generating a counterforce; in the closed state, the spring of the closed abutment 36 provides a compensating force through tensile deformation. Thus, even if the pivot part wears due to long-term load or the arc plate undergoes slight deformation, the elastic restoring force of the elastic element can still maintain effective contact between the abutment and the fixing rod 21.

[0041] Please see Figures 1 to 5 Furthermore, this application proposes that guide ramps 6 be provided at both the upper and lower ends of the first arc-shaped plate 3 and the second arc-shaped plate 4, the guide ramps 6 serving to assist in guiding the steel pipe 7. The guide ramps 6 can be configured as an integrally formed inclined structure with the arc-shaped plate, or they can be fixed to the ends of the arc-shaped plate by welding or bolting. The preferred inclination angle of the guide ramps 6 is 30-45 degrees to ensure that the steel pipe 7 can smoothly slide into the fastener. As a preferred embodiment, the surface of the guide ramps 6 can be coated with a wear-resistant coating to extend its service life.

[0042] Specifically, the technical solution of the guide ramp 6 achieves its function in the following way: when the steel pipe 7 needs to be inserted into the fastener, the end of the steel pipe 7 first contacts the inclined surface of the guide ramp 6, and slides along the ramp into the space formed by the first arc plate 3 and the second arc plate 4 under the action of gravity or external force. The upper guide ramp 6 mainly guides the steel pipe 7 to fall, while the lower guide ramp 6 restricts the falling position of the steel pipe 7. Therefore, this design effectively solves the alignment problem during the assembly of the steel pipe 7 and avoids assembly difficulties caused by angular deviations.

[0043] By setting the guide ramp 6, the operational difficulty of assembling the steel pipe 7 is significantly reduced, and the assembly efficiency is improved. At the same time, it reduces the wear of fasteners caused by improper assembly and extends their service life. In addition, the guide ramp 6 has a simple structure, is easy to process and manufacture, and will not significantly increase production costs.

[0044] The above description is merely an exemplary embodiment of the present utility model and does not limit the patent scope of the present utility model. Any equivalent structural transformations made based on the technical concept of the present utility model and the contents of the present utility model specification and drawings, or direct / indirect applications in other related technical fields, are included within the patent protection scope of the present utility model.

Claims

1. A scaffolding coupler, characterized in that, The scaffolding couplers include: Center rod; A fixed plate is fixed to the middle of the central rod. A first protrusion is provided on one side of the fixed plate, and a rotating shaft is provided on the first protrusion. A first arc-shaped plate, wherein a second protrusion is provided on one side of the first arc-shaped plate, and the second protrusion is rotatably mounted on the rotating shaft; The second arc-shaped plate has a third protrusion on one side, and the third protrusion is rotatably mounted on the rotating shaft; A locking mechanism is located on the side of the first arc-shaped plate and the second arc-shaped plate away from the protrusion, for fixing the first arc-shaped plate and the second arc-shaped plate; The scaffolding fastener has an open state and a closed state. Both the first arc plate and the second arc plate are provided with a locking tooth structure on the other side. When the scaffolding fastener is in the closed state, the two locking tooth structures mesh with each other to avoid vertical misalignment.

2. The scaffolding coupler as described in claim 1, characterized in that, The first arc-shaped plate and the second arc-shaped plate are provided with a plurality of retaining blocks on the side protrusion where they meet, and grooves are provided between the plurality of retaining blocks. The retaining blocks on the first arc-shaped plate are inserted into the grooves on the second arc-shaped plate, and the retaining blocks on the second arc-shaped plate are inserted into the grooves on the first arc-shaped plate.

3. The scaffolding coupler as described in claim 2, characterized in that, The thickness of the holding block is less than the thickness of the first arc plate and the second arc plate. The groove is opened from the side wall of the first arc plate and the second arc plate and is connected to the end of the groove, but does not extend to both sides, so as to form a stepped structure. This setting not only ensures the longitudinal holding of the first arc plate and the second arc plate, but also assists in horizontal positioning.

4. The scaffolding coupler as described in claim 1, characterized in that, The locking mechanism includes a lead screw and a nut.

5. The scaffolding coupler as described in claim 4, characterized in that, One end of the first arc-shaped plate is provided with a first fixing plate, and one end of the second arc-shaped plate is provided with a second fixing plate. The first fixing plate and the second fixing plate are attached together. The lead screw is fixed to the first fixing plate. The second fixing plate is provided with a notch. During the opening or closing process, the lead screw leaves or enters the notch.

6. The scaffolding coupler as described in claim 1, characterized in that, There are two of each of the second and third bumps. The two second bumps are located at both ends close to the first bump, and the two third bumps are located outside the two second bumps.

7. The scaffolding coupler as described in claim 6, characterized in that, The scaffolding fastener also includes a holding mechanism, which is used to hold the second protrusion and the third protrusion in the open state to prevent the arc plate from colliding due to excessive opening angle, and to hold the second protrusion and the third protrusion in the closed state to ensure that the locking position is consistent each time it is closed.

8. The scaffolding coupler as described in claim 7, characterized in that, The supporting mechanism includes a fixed rod disposed on the fixed plate. The second protrusion and the third protrusion are each provided with an opening supporting member, which is used to abut against the fixed rod in the open state. The second protrusion and the third protrusion are each provided with a closing supporting member, which is used to abut against the fixed rod in the closed state.

9. The scaffolding coupler as described in claim 8, characterized in that, Both the opening and closing abutments are elastic components, and after the scaffold fasteners undergo slight deformation due to prolonged use, the elastic components have a position compensation function.

10. The scaffolding coupler as described in any one of claims 1 to 9, characterized in that, Both the upper and lower ends of the first arc-shaped plate and the second arc-shaped plate are provided with guide inclined plates, which are used to assist in guiding the steel pipe.

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