Construction scaffold clamping and locking type butt joint assembly
The design of the support frame, sleeve, and locking ring of the snap-lock docking assembly solves the problem of insufficient steel pipe connection strength, achieves stable connection and simplifies operation, improves construction safety and reduces costs.
Patent Information
- Application Number
- CN202520551468.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-03-27
- Publication Date
- 2026-02-24
- Estimated Expiration
- 2035-03-27
AI Technical Summary
In existing building construction, the snap-on fasteners used for steel pipe connections often fail due to problems such as low bolt strength, corrosion, and deformation, posing safety hazards and increasing costs.
The system employs a locking-type connection assembly, including a support frame, an upper sleeve, a lower sleeve, and a locking ring. The locking ring and deformable clamps enable tool-free tightening of the steel pipes, forming a rigid connection.
It improves the stability of steel pipe connections, avoids connection failures caused by bolt corrosion and deformation, simplifies the operation process, and reduces safety hazards and construction costs.
Smart Images

Figure CN223937620U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of scaffolding construction in building engineering, and specifically to a locking-type docking component for construction scaffolding. Background Technology
[0002] With the development of society and economy, safety requirements in construction are becoming increasingly stringent, and scaffolding is a key aspect of construction safety management.
[0003] As building height increases, so does the height of scaffolding. Currently, the steel pipes are six meters long and need to be joined together for longer installations. Traditionally, steel pipes are connected using a snap-on clamp system, which uses a combination of a snap-on plate and bolts. However, due to the low strength of the bolts, the clamping force of the couplers is relatively weak. In addition, factors such as rust, deformation, and thread damage on the connecting bolts can all cause damage to the couplers, leading to connection failure, significant safety hazards, and increased construction costs. Utility Model Content
[0004] To address the aforementioned problems, this utility model discloses a locking-type connection assembly for construction scaffolding. This device uses a locking mechanism to connect steel pipes, eliminating the need for complex operations such as tightening with wrenches to achieve the connection of steel pipes.
[0005] A construction scaffolding locking assembly includes a support frame, an upper sleeve, a lower sleeve, and a locking ring. The support frame is installed inside two connecting steel pipes. The upper sleeve and the lower sleeve are respectively fitted onto the upper and lower ends of the support frame. The outer sides of the upper sleeve and the lower sleeve are fixedly installed to the outside of the upper and lower steel pipe sections by the locking ring.
[0006] Preferably, the upper part of the upper sleeve and the lower part of the lower sleeve are provided with multiple slots spaced apart along the circumference, and each sleeve is fitted with a clamp on the outside. The end of the clamp is provided with a deformable clip that cooperates with the slot, and the locking ring is installed on the outside of the deformable clip.
[0007] Preferably, the clamp includes a steel ring, and a plurality of deformable clips are connected to the outer end face of the steel ring. The outer surface of the deformable clips gradually slopes outward from the direction of the steel ring toward the end of the deformable clip.
[0008] Preferably, the support frame includes a horizontal partition, and the upper and lower ends of the horizontal partition are provided with support plates for supporting the inner wall of the steel pipe.
[0009] Preferably, the cross-section of the support plate is a cross-shaped structure.
[0010] Preferably, the connection between the support plate and the diaphragm is provided with a slope, and the slope gradually extends outward from the direction of the support plate to the direction of the diaphragm.
[0011] Preferably, the lower end of the lower sleeve, on the outside of the lower steel pipe, is fitted with a closed steel ring for supporting the clamp.
[0012] Preferably, the inner surface of the deformable clip is rough.
[0013] Compared with the prior art, this utility model has the following advantages:
[0014] 1. This utility model features an integrated design to avoid losses due to the loss of spare parts.
[0015] 2. This utility model adopts a locking connection, eliminating the need for wrenches or screw tightening, thus preventing connection failure caused by workers not tightening the bolts properly.
[0016] 3. This device has no bolts or other accessories, which avoids the possibility that factors such as rust, deformation, or thread damage of the connecting bolts can cause damage to the fasteners and connection failure.
[0017] 4. After the steel pipes are inserted and locked, two fastening points are formed at the bottom slope of the support plate and at the deformable clamp, ensuring a rigid connection at each steel pipe joint and improving the stability of the connection. Attached Figure Description
[0018] Figure 1 This is a cross-sectional view of the structure of this utility model before it is installed on the connecting steel pipe and locked.
[0019] Figure 2 This is a cross-sectional view of the structure of this utility model after it has been installed on the connecting steel pipe and locked in place.
[0020] Figure 3 This is a three-dimensional structural diagram of the present invention after it has been installed on the connecting steel pipe and locked in place.
[0021] Figure 4 This is a structural diagram of the support frame;
[0022] Figure 5 It is a diagram of the clamp structure;
[0023] Figure 6 This is a structural diagram of the upper sleeve;
[0024] Figure 7 This is the lower sleeve structure diagram;
[0025] Figure 8 This is a diagram of the locking ring structure;
[0026] In the diagram, 1. Upper steel pipe, 2. Clamp, 2-1. Steel ring, 2-2. Clamping plate, 3. Locking ring, 4. Support frame, 4-1. Support plate, 4-2. Horizontal partition, 5. Upper sleeve, 6. Lower sleeve, 7. Lower steel pipe, 8. Closed steel ring. Detailed Implementation
[0027] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present utility model and are not intended to limit the present utility model.
[0028] This utility model is disclosed as follows: Figure 1-8 The construction scaffolding interlocking assembly shown comprises five main parts: an upper sleeve 5, a lower sleeve 6, a support frame 4, a clamp 2, and a locking ring 3. The steel pipes to be connected include an upper steel pipe 1 and a lower steel pipe 7.
[0029] Both the upper sleeve 5 and the lower sleeve 6 are made of steel pipe. The inner diameter of the sleeve is adapted to the outer diameter of the steel pipe to be connected, which facilitates the insertion of the steel pipe. Multiple slots are machined at intervals on the upper part of the upper sleeve 5 and the lower part of the lower sleeve 6. These slots are used to install the clamp 2.
[0030] The support frame 4 is welded from support plates 4-1 and cross diaphragms 4-2. The support plates 4-1 are arranged in a cross shape, and their width is adapted to the inner diameter of the steel pipe to be connected, preventing the steel pipe from being squeezed and deformed when clamped by the clamps 2. The base of the support plates 4-1 is sloped, which allows the bottom of the steel pipe to be connected to be locked when inserted, while also ensuring that the support frame 4 has a certain strength and avoiding stress concentration at the connection.
[0031] The clamp 2 is welded together from a connecting steel ring 2-1 and a clamping plate 2-2. The bottom of the clamping plate 2-2 has a certain slope so that it can grip the steel pipe to be connected when the locking ring moves downward, hence it is called a deformable clamping plate. The inner side of the clamping plate 2-2 should be machined to a certain rough surface to increase the friction between it and the steel pipe.
[0032] The locking ring 3 includes an inner ring 3-1 and an outer ring 3-2 that are coaxially arranged and connected to each other. The inner diameter of the inner ring 3-1 is adapted to the outer diameter of the upper and lower sleeves, and the outer ring 3-2 is used for hammering to lock.
[0033] During processing, firstly, the upper sleeve 5 and the lower sleeve 6 are welded to the upper and lower ends of the transverse partition 4-1 of the support frame 4 to form a whole. During welding, attention should be paid to aligning the horizontal extension direction of the support plate 4-1 with the middle of the slots on the upper and lower sleeves. Then, the clamp 2 is welded to the corresponding positions on the outside of the upper and lower sleeves, ensuring that the clamping plates can move appropriately. Before welding the clamp 2, the locking ring 3 should be fitted onto the root of the clamp 2 (i.e., near the connecting steel ring 2-1). Finally, the closing steel ring 8 is welded to the lower end of the lower sleeve 6.
[0034] In use, first insert this component into the upper end of the lower steel pipe 7, then use a hammer to strike the lower locking ring 3. Apply even force during hammering to ensure the locking ring 3 evenly locks the clamp 2, lower sleeve 6, and lower steel pipe 7. Next, insert the upper steel pipe 1 into the upper end of this component and similarly strike the lower locking ring 3 to lock the upper clamp 2, upper sleeve 5, and upper steel pipe 1. To remove, use a hammer to strike the locking ring 3 in the opposite direction to pull out the connecting steel pipe.
[0035] The above description of the disclosed embodiments enables those skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims
1. A locking-type connection assembly for construction scaffolding, characterized in that, It includes a support frame (4), an upper sleeve (5), a lower sleeve (6), and a locking ring (3). The support frame (4) is installed inside the two connected steel pipes. The upper sleeve (5) and the lower sleeve (6) are respectively fitted onto the upper and lower ends of the support frame (4). The outer sides of the upper sleeve (5) and the lower sleeve (6) are fixedly installed on the outside of the upper and lower steel pipes by the locking ring (3).
2. The construction scaffolding interlocking assembly according to claim 1, characterized in that, The upper part of the upper sleeve (5) and the lower part of the lower sleeve (6) are provided with multiple slots spaced apart along the circumference. Each sleeve is fitted with a clamp (2) on its outside. The end of the clamp (2) is provided with a deformable clip that cooperates with the slot. The locking ring (3) is installed on the outside of the deformable clip.
3. The construction scaffolding interlocking assembly according to claim 2, characterized in that, The clamp (2) includes a steel ring (2-1), and a plurality of deformable clips are connected to the outer end face of the steel ring (2-1). The outer surface of the deformable clips gradually tilts outward from the direction of the steel ring (2-1) toward the end of the deformable clip.
4. The construction scaffolding interlocking connection assembly according to claim 2, characterized in that, The inner surface of the deformable clip is rough.
5. A construction scaffolding interlocking connection assembly according to claim 1, characterized in that, The support frame (4) includes a horizontal partition (4-2), and the upper and lower ends of the horizontal partition (4-2) are provided with support plates (4-1) for supporting the inner wall of the steel pipe.
6. The construction scaffolding interlocking assembly according to claim 5, characterized in that, The cross-section of the support plate (4-1) is a cross-shaped structure.
7. A construction scaffolding interlocking connection assembly according to claim 5, characterized in that, The connection between the support plate (4-1) and the diaphragm (4-2) is provided with a slope, which gradually extends outward from the direction of the support plate (4-1) towards the direction of the diaphragm (4-2).
8. The construction scaffolding interlocking assembly according to claim 1, characterized in that, The lower end of the lower sleeve (6) is fitted with a closed steel ring (8) for supporting the clamp on the outside of the lower steel pipe.