Adjustable crossbar of scaffolding

Abstract

The utility model discloses an adjustable cross bar of a scaffold in the field of building construction technology, comprising a telescopic rod body and a latch assembly installed at both ends of the rod body for connecting with a disc node, the latch assembly is rotatably arranged at both ends of the rod body, and a rotation axis of the latch assembly and the rod body for rotation connection is perpendicular to the axis of the rod body, when the latch assembly at one end of the rod body is connected with the disc node, the rod body and the latch assembly at the other end can rotate around the rotation axis of the latch assembly and the rod body on the disc node, and the application range is greatly increased by adjusting the length, angle and other parameters of the rod body, so that special-shaped scaffolds can also form an integral system to jointly bear the load, thereby improving the stability and use efficiency of the scaffold.

Description

Technical Field

[0001] The utility model relates to the technical field of building construction, in particular to an adjustable cross bar of a scaffold. Background Art

[0002] In recent years, domestic scholars have made a lot of research on the optimization and improvement of the disc buckle frame, and derived a series of simplified frame pipes such as wheel buckle scaffolding, which saves materials while meeting the force requirements. However, in some specific cases, the frame is limited by the span modulus and cannot form a complete system to bear the load together.

[0003] For example, the Chinese utility model patent with patent application number 202321377188.2 discloses a horizontal rod of a steel pipe scaffold with adjustable length, which includes a first steel pipe and a second steel pipe, the end of the second steel pipe is embedded in the interior of the first steel pipe, the inner wall gap of the second steel pipe and the first steel pipe is matched, the ends of the first steel pipe and the second steel pipe are provided with buckle assemblies, the first steel pipe and the second steel pipe are welded to the buckle assemblies, and the intersection of the first steel pipe and the second steel pipe is provided with a fastening clip, the fastening clip is wrapped around the surface of the second steel pipe, and the fastening clip is connected to the inner wall of the first steel pipe. Whether in special-shaped, non-rectangular and insufficient modulus areas, by adjusting the length of the horizontal rod, the horizontal rod joint can be inserted into the connecting plate and connected with a wedge-shaped pin to form a steel pipe bracket with a structural geometrically invariant system, thereby ensuring the absolute stability and safe operation of the scaffolding during construction.

[0004] The above patent realizes the length adjustment of the horizontal rod (cross bar). No matter in the area of ​​special shape, non-rectangular shape or insufficient module, by adjusting the length of the horizontal rod (cross bar), the horizontal rod (cross bar) joint can be inserted into the connecting plate (disc buckle node) and connected with a pin to form a steel pipe bracket with a structural geometrically unchanged system.

[0005] However, when encountering ring beams, Y-beams, and curved buildings, there will be a large misalignment between the scaffoldings constructed on the exterior walls, and the connecting plate (disk-lock node) is limited in size, and generally has 8 holes on its surface for plugging with the pins. In other words, the horizontal rod (cross bar) can only be connected to the connecting plate (disk-lock node) within these 8 holes, which undoubtedly limits the installation angle of the horizontal rod (cross bar). When encountering the above-mentioned special-shaped buildings, the scaffolding body cannot form a complete system simply by adjusting the length of the horizontal rod (cross bar), and cannot bear the load together.

[0006] Based on this, the utility model designs an adjustable cross bar of a scaffold to solve the above problems. Utility Model Content

[0007] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: an adjustable cross bar of a scaffold, comprising a telescopic rod body and a pin assembly installed at both ends of the rod body for connecting with a disc node, the pin assembly is rotatably arranged at both ends of the rod body, and the rotation axis of the pin assembly rotatably connected to the rod body is perpendicular to the axis of the rod body, when the pin assembly at one end of the rod body is connected to the disc node, the rod body and the pin assembly at the other end can rotate around the rotation axis of the pin assembly and the rod body on the disc node.

[0008] As a further solution of the utility model, the rod body is composed of a sleeve and an inner tube movably installed in the sleeve.

[0009] As a further solution of the utility model, the ends of the sleeve and the inner tube that are far away from each other are fixedly installed with annular joints, and the sleeve and the inner tube are rotatably connected to the latch assembly through the annular joint.

[0010] As a further solution of the utility model, the latch assembly includes an anti-dropout latch for inserting into the buckle node and a rotary joint for connecting the anti-dropout latch and the annular joint.

[0011] As a further solution of the utility model, a first opening for the annular joint to be inserted is provided at one end of the rotary joint, and a second opening for the disc node to be inserted is provided at the other end, and the annular joint is rotatably arranged in the first opening of the rotary joint.

[0012] As a further solution of the utility model, a rotating shaft pin is rotatably installed at one end of the rotating joint with the first opening, and the rotating shaft pin passes through the annular joint in the first opening, so that the annular joint and the rotating joint are rotatably matched.

[0013] As a further solution of the utility model, the rotary joint is provided with a notch penetrating the second opening, and the anti-dropping pin is plugged into the notch.

[0014] As a further solution of the utility model, both ends of the rotating shaft pin are threadedly engaged with bolts to prevent the rotating shaft pin from being separated from the rotating joint.

[0015] As a further solution of the utility model, the outer circumferential surfaces of the sleeve and the inner tube on one side close to each other are both provided with external threads, and the external threads on the surfaces are simultaneously engaged with the positive and negative thread sleeve threads.

[0016] As a further solution of the utility model, the inner diameter of the sleeve is equal to the outer diameter of the outer thread of the inner tube.

[0017] The utility model has the following beneficial effects:

[0018] 1. This device achieves adjustable rod length by slidingly matching the sleeve with the inner tube, and rotatably installs the swivel joints at both ends of the rod. When one end of the rod is fixed, it can rotate freely in the plane, thereby meeting the construction needs of different special-shaped scaffolds. The scope of application is greatly increased, so that special-shaped scaffolds can also form an integral system to jointly bear the load, thereby improving the stability and use efficiency of the scaffold.

[0019] 2. The design of adjustable length and rotatable rod can improve the efficiency of scaffolding construction. By adjusting the length and angle of the rod, the scaffolding can be built quickly, avoiding the problem of using steel pipes + fasteners for supplementary connections in traditional scaffolding construction, which consumes a lot of time and manpower.

[0020] 3. Each accessory of the device can be disassembled separately, and all components can be disassembled to facilitate the replacement of locally worn parts, extend the overall service life, and meet the concept of environmental protection and energy saving.

[0021] In addition to the above-described purposes, features and advantages, the present invention has other purposes, features and advantages. The present invention will be further described in detail below with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] The drawings constituting a part of this application are used to provide a further understanding of the present invention. The illustrative embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation on the present invention. In the drawings:

[0023] Figure 1 It is a schematic diagram of the overall structure of the utility model.

[0024] Figure 2 It is a structural schematic diagram of the rod body in the utility model.

[0025] Figure 3 It is a schematic diagram of the exploded structure of the latch assembly in the utility model.

[0026] Figure 4 It is a structural schematic diagram of the notch in the utility model.

[0027] Figure 5 It is a schematic diagram of the cross-sectional structure of the positive and negative thread sleeve in the utility model.

[0028] Legend:

[0029] 1. Sleeve; 2. Inner tube; 3. Ring joint; 4. Anti-drop pin; 5. Rotary joint; 51. First opening; 52. Second opening; 53. Rotary shaft pin; 54. Notch; 55. Bolt; 6. Positive and negative thread sleeve. DETAILED DESCRIPTION

[0030] The embodiments of the present invention are described in detail below in conjunction with the accompanying drawings. However, the present invention can be implemented in a variety of different ways as defined and covered below.

[0031] See also Figure 1-5 The utility model provides a technical solution: an adjustable cross bar of a scaffold, comprising a telescopic rod body and a pin assembly installed at both ends of the rod body for connecting with a disc node, the pin assembly is rotatably arranged at both ends of the rod body, and the rotation axis of the rotational connection between the pin assembly and the rod body is perpendicular to the axis of the rod body, when the pin assembly at one end of the rod body is connected with the disc node, the rod body and the pin assembly at the other end can rotate around the rotation axis of the pin assembly and the rod body on the disc node.

[0032] In the present embodiment, the rod body is retractable and the two ends of the rod body are rotatably installed with latch assemblies. During the scaffolding construction process, the rod body is connected to the disc-locking nodes on the vertical rod through the latch assemblies at both ends. Since the rod body as a whole is retractable, the length of the rod body can be adjusted according to actual conditions. Since the latch assemblies are rotatably arranged at both ends of the rod body, the rod body can be horizontally offset at an angle according to the misalignment between the scaffolds during the installation process, so as to connect the misaligned disc-locking nodes. It can adapt to different beam spacings and slopes through rotation and telescoping, so that the scaffolding body forms a complete system, thereby meeting the needs of special-shaped arrangements. By adjusting the length and angle of the rod body, the scaffolding can be quickly built, avoiding the problem of using steel pipes + fasteners for supplementary connections in traditional scaffolding construction, which consumes a lot of time and manpower.

[0033] The heights of two adjacent disc-lock nodes that need to be connected are consistent, and the rotation axis of the rotational connection between the pin assembly and the rod body is perpendicular to the axis of the rod body. This ensures that when the rod body rotates around the rotation axis of the pin assembly and the rod body, the rod body will not tilt or change in height, ensuring that the pin assemblies at both ends of the rod body can be smoothly connected to the disc-lock nodes.

[0034] like Figure 2 As shown, the rod body is composed of a sleeve 1 and an inner tube 2 movably installed in the sleeve 1.

[0035] In this embodiment, the rod body is composed of a sleeve 1 and an inner tube 2 movably installed in the sleeve 1. The inner tube 2 enters or extends out of the inner cavity of the sleeve 1 to achieve the length adjustment of the rod body.

[0036] like Figure 2 As shown, the ends of the sleeve 1 and the inner tube 2 that are away from each other are fixedly mounted with an annular joint 3, and the sleeve 1 and the inner tube 2 are rotatably connected to the latch assembly through the annular joint 3.

[0037] In this embodiment, the sleeve 1 and the inner tube 2 are both rotatably connected to the latch assembly via the annular joint 3. The annular joint 3 is flat, and the side away from the sleeve 1 and the inner tube 2 is arc-shaped. In this way, when rotating with the latch assembly, not only can the area of ​​the fitting surface with the latch assembly be increased, but also the range of motion interference during the rotation of the annular joint 3 can be reduced, thereby increasing stability.

[0038] In order to ensure that the annular joint 3 does not break, the tensile strength condition to be met is

[0039] Wherein, t is the thickness of the annular joint 3; b is the width of the annular joint 3; d is the diameter of the small hole on the annular joint 3; [σ] is the ultimate tensile stress of the steel.

[0040] like Figure 1-3 As shown, the latch assembly includes an anti-dropout latch 4 for inserting into the buckle node and a rotary joint 5 for connecting the anti-dropout latch 4 and the annular joint 3.

[0041] In this embodiment, the two ends of the rotary joint 5 are respectively used to connect with the annular joint 3 and the anti-dropping pin 4, and the anti-dropping pin 4 is inserted into the buckle node to fix the rotary joint 5 on the buckle node.

[0042] As shown in 3 , one end of the rotary joint 5 defines a first opening 51 into which the annular joint 3 can be inserted, and the other end defines a second opening 52 into which the buckle node can be inserted. The annular joint 3 is rotatably disposed in the first opening 51 of the rotary joint 5 .

[0043] In this embodiment, a first opening 51 and a second opening 52 are respectively provided at both ends of the rotary joint 5, the annular joint 3 is inserted into the first opening 51 and is rotatably connected to the rotary joint 5, and after the buckle node is inserted into the second opening 52, the buckle point is locked in the second opening 52 by the anti-drop pin 4, and the first opening 51 and the second opening 52 are respectively staggeredly engaged with the annular joint 3 and the buckle node, thereby enhancing the torsion resistance of the connection.

[0044] like Figure 1-3 As shown, a rotating shaft pin 53 is rotatably mounted on one end of the rotating joint 5 with the first opening 51 , and the rotating shaft pin 53 passes through the annular joint 3 in the first opening 51 , so that the annular joint 3 and the rotating joint 5 are rotatably matched.

[0045] In this embodiment, the rotating shaft pin 53 serves as a rotating shaft to rotationally connect the annular joint 3 and the rotating joint 5 together.

[0046] like Figure 4 As shown, the rotary joint 5 is provided with a slot 54 penetrating through the second opening 52 , and the anti-dropping pin 4 is plugged into and fitted in the slot 54 .

[0047] In this embodiment, the rotary joint 5 is provided with a slot 54 which passes through the second opening 52, and the second opening 52 is engaged with the surface of the buckle node, so that the slot 54 provided on the surface of the rotary joint 5 is aligned with the card hole on the surface of the buckle node, and then the anti-detachment pin 4 passes through the slot 54 to lock the rotary joint 5 with the buckle node to prevent the rotary joint 5 from detaching from the buckle node.

[0048] like Figure 3 As shown, both ends of the rotating shaft pin 53 are threadedly engaged with bolts 55 to prevent the rotating shaft pin 53 from being separated from the rotating joint 5.

[0049] In this embodiment, both ends of the rotating shaft pin 53 are threadedly engaged with bolts 55, and the bolts 55 prevent the rotating shaft pin 53 from being detached from the rotating joint 5, so as to realize the disassembly and replacement function of the rotating joint 5, facilitate the replacement of locally worn parts, and extend the service life of the cross bar.

[0050] like Figure 5 As shown, the outer circumferential surfaces of the sleeve 1 and the inner tube 2 on one side close to each other are both provided with external threads, and the external threads on the surfaces are simultaneously threadedly engaged with the positive and negative thread sleeves 6.

[0051] In this embodiment, the sleeve 1 and the inner tube 2 are simultaneously threadedly engaged with the positive and negative wire sleeve 6 to connect the sleeve 1 and the inner tube 2 together to form a rod body. After being connected together, the total length of the sleeve 1 and the inner tube 2 can be controlled by rotating the positive and negative wire sleeve 6. At the same time, there is no need to change the angle between the sleeve 1 and the inner tube 2 during the adjustment process, thereby realizing stepless adjustment of the length of the rod body. Since the length of the positive and negative wire sleeve 6 is limited, the adjustable range of the positive and negative wire sleeve 6 will be more limited. Therefore, when connecting the sleeve 1 and the inner tube 2 to the positive and negative wire sleeve 6, it is necessary to first control the length of the rod body to an approximate length, and then make fine adjustments by rotating the positive and negative wire sleeve 6 when installing the rod body.

[0052] like Figure 5 As shown, the inner diameter of the sleeve 1 is equal to the outer diameter of the outer thread of the inner tube 2.

[0053] In this embodiment, when the inner tube 2 and the outer surface are simultaneously threadedly engaged with the positive and negative thread sleeve 6, the end of the inner tube 2 that is engaged with the positive and negative thread sleeve 6 will enter the sleeve 1, and the inner cavity diameter of the sleeve 1 is equal to the outer diameter of the outer thread of the inner tube 2. When the inner tube 2 enters the sleeve 1, the inner tube 2 will just fit with the inner cavity of the sleeve 1, thereby increasing the connection strength between the inner tube 2 and the sleeve 1.

[0054] The above description is only the preferred embodiment of the utility model, and is not intended to limit the utility model. For those skilled in the art, the utility model can have various modifications and changes. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.

Claims

1. A scaffolding adjustable crossbar, comprising a telescopic rod body and a latch assembly mounted at both ends of the rod body for connecting with a buckle node, characterized in that: The latch assembly is rotatably arranged at both ends of the rod body, and the rotation axis of the latch assembly and the rod body is perpendicular to the axis of the rod body. When the latch assembly at one end of the rod body is connected to the disc buckle node, the rod body and the latch assembly at the other end can rotate around the rotation axis of the latch assembly and the rod body on the disc buckle node.

2. The adjustable crossbar of a scaffold according to claim 1, characterized in that: The rod body is composed of a sleeve (1) and an inner tube (2) movably installed in the sleeve (1).

3. The adjustable crossbar of a scaffold according to claim 2, characterized in that: The ends of the sleeve (1) and the inner tube (2) that are away from each other are fixedly mounted with an annular joint (3), and the sleeve (1) and the inner tube (2) are rotatably connected to the latch assembly via the annular joint (3).

4. The adjustable crossbar of a scaffold according to claim 3, characterized in that: The latch assembly comprises an anti-dropout latch (4) for inserting into a buckle node and a rotary joint (5) for connecting the anti-dropout latch (4) and a ring joint (3).

5. The adjustable crossbar of a scaffold according to claim 4, characterized in that: One end of the rotary joint (5) is provided with a first opening (51) into which the annular joint (3) can be inserted, and the other end is provided with a second opening (52) into which the buckle node can be inserted. The annular joint (3) is rotatably arranged in the first opening (51) of the rotary joint (5).

6. The adjustable crossbar of a scaffold according to claim 5, characterized in that: A rotating shaft pin (53) is rotatably mounted on one end of the rotating joint (5) where the first opening (51) is opened. The rotating shaft pin (53) passes through the annular joint (3) in the first opening (51), so that the annular joint (3) and the rotating joint (5) are rotatably matched.

7. The adjustable crossbar of a scaffold according to claim 5, characterized in that: The rotary joint (5) is provided with a notch (54) penetrating the second opening (52), and the anti-dropping pin (4) is plugged into the notch (54).

8. The adjustable crossbar of a scaffold according to claim 6, characterized in that: Both ends of the rotating shaft pin (53) are threadedly engaged with bolts (55) for preventing the rotating shaft pin (53) from being separated from the rotating joint (5).

9. The adjustable crossbar of a scaffold according to claim 2, characterized in that: The outer circumferential surfaces of the sleeve (1) and the inner tube (2) on one side close to each other are both provided with external threads, and the external threads on the surfaces are simultaneously threadedly engaged with the positive and negative thread sleeves (6).

10. The adjustable crossbar of a scaffold according to claim 9, characterized in that: The inner diameter of the sleeve (1) is equal to the outer diameter of the outer thread of the inner tube (2).

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