Plate buckle scaffold and cross rod connector and plate buckle plug pin thereof
By setting limiting pin grooves and gravity outward flipping mechanism on both sides of the pin body, combined with the U-shaped fork head for easy disassembly, the problem of pin loosening and falling off is solved, and the stability of the pin and construction efficiency are improved.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- NANTONG CONSTR GORUP CO LTD
- Filing Date
- 2025-07-26
- Publication Date
- 2026-05-15
AI Technical Summary
The pins of existing disc-lock scaffolding are prone to loosening or falling off during construction due to shaking and vibration. This increases the risk, especially during frequent material handling and personnel movement on the construction site. Existing limit structures fail in complex environments.
A plate-shaped pin body is designed with limiting pin grooves on both sides. The limiting pins turn outward and abut under the action of gravity, providing double-sided limiting and increasing stability. It is also easy to disassemble via a U-shaped fork.
It effectively reduces the risk of pins falling off, improves stability and disassembly efficiency during construction, reduces the probability of falling off due to accidental contact, and enhances construction safety and efficiency.
Smart Images
Figure CN224244407U_ABST
Abstract
Description
Technical Field
[0001] This utility model belongs to the field of building construction technology, and in particular relates to disc-lock scaffolding and its crossbar connectors and disc-lock pins. Background Technology
[0002] In the construction process, disc-lock scaffolding has gradually replaced other forms of scaffolding due to its advantages such as strong load-bearing capacity, safety and reliability, and convenient construction and dismantling. As a component of disc-lock scaffolding, the pin plays a crucial role in the stability of the scaffolding itself. However, during construction, because the pins lack anchoring measures, they may loosen as the scaffolding sways after installation, and in severe cases, they may even fall off.
[0003] Currently, some solutions have been proposed by technicians to address the aforementioned issues. For example, the "pin structure for disc-lock scaffolding" disclosed in CN116290728A reduces the risk of pin detachment to some extent by setting a locking plate inside the pin to limit its movement. However, this type of limiting pin still poses a significant risk of detachment in complex construction sites. Frequent material handling and personnel movement during construction greatly increase the possibility of accidental activation of the locking plate, thus increasing the risk of pin detachment. Furthermore, the scaffolding structure often vibrates during use, which can also affect the pins. Prolonged vibration can easily cause the locking plate to disengage, thereby rendering the pin's locking function ineffective. Utility Model Content
[0004] To solve the above problems, the present invention adopts the following technical solution:
[0005] The snap fastener includes:
[0006] The pin body is plate-shaped, and the width of the pin body increases from the pin head to the pin tail.
[0007] The pin body has limit pin grooves on both sides, which are used to accommodate the limit pins that can be turned outwards at the top.
[0008] When the pin body is arranged longitudinally, the upper end of the limiting pin tends to bulge outwards and protrude from the two plates of the pin body under the action of gravity.
[0009] In some configurations, the lower end of the limiting pin is hinged to the inner wall of the limiting pin groove.
[0010] Furthermore, the upper width of the limiting pin is greater than the lower width, and when the limiting pin is housed in the limiting pin groove, the center of gravity of the limiting pin is located outside the hinge shaft.
[0011] Furthermore, the lower inner wall of the limiting pin groove has a concave portion, and the inner side of the lower end of the limiting pin has an abutting protrusion. When the limiting pin is turned outward from the limiting pin groove, its abutting protrusion abuts against the concave portion.
[0012] Furthermore, the upper end face of the limiting pin is inclined downward from the inner side of the outer side; or, the upper end face of the limiting pin is an arc surface.
[0013] Furthermore, the limiting pin grooves located on the two plates of the pin body are offset in the width direction; the outer side of the middle part of the limiting pin has an outward protrusion.
[0014] The crossbar connector includes a U-shaped fork head that can be fitted onto the disc buckle connector. The two fixed plates of the U-shaped fork head are provided with corresponding pin holes, and any one of the aforementioned pin bodies can be simultaneously inserted into the pin holes of the two fixed plates.
[0015] The length of the pin hole is less than the width of the upper end of the pin body but greater than the width of the lower end of the pin body; and the width of the pin hole is adapted to the thickness of the pin body. When the limiting pin flips out of the limiting pin groove, the distance between the limiting pin limiting ends of the two plates is greater than the width of the pin hole.
[0016] In some embodiments, the spacing between the two fixing plates of the U-shaped fork head is adapted to the thickness of the pin body, and when the two limiting pin slots of the pin body are located between the two fixing plates, the limiting pin in either limiting pin slot is housed in the limiting pin slot.
[0017] In some embodiments, the middle of any limiting pin of the pin body has a convex arc segment, and when the outer side of the arc segment is flush with the surface of the pin body plate, the upper outer edge of the limiting pin is recessed into the groove surface of the limiting pin groove.
[0018] Modular scaffolding includes:
[0019] A disc with a vertical rod connected to the middle of its two sides, and the disc surface has at least 4 fixing and positioning holes;
[0020] In any of the aforementioned crossbar connectors, the U-shaped fork head is mounted on the disc and its pin hole is aligned with any of the fixed positioning holes of the disc.
[0021] The aforementioned disc buckle pin passes through aligned fixing positioning holes and pin holes;
[0022] In this case, after the limiting pin passes through the fixed positioning hole and the pin hole in the limiting pin groove of the disc buckle, the upper end of the limiting pin is turned outward out of the limiting pin groove.
[0023] In this disclosure, limit pins are provided on both sides of the disc buckle pin to reduce the risk of accidental detachment due to accidental activation on one side. Limiting from opposite sides ensures stable operation of the other side in the event of accidental activation on one side. Furthermore, the outward folding of the limit pins relies primarily on gravity, allowing for more stable outward folding after installation. Additionally, although the two limit pins are located on opposite sides, they can be simultaneously pushed up by a U-shaped fork during disassembly, reducing the difficulty of disassembly and improving construction efficiency. Attached Figure Description
[0024] Figure 1 This is a schematic diagram of the connection structure of the horizontal and vertical members of the disc-lock scaffolding.
[0025] Figure 2 A is a schematic diagram of the outward-turned shape of the limiting pin of the disc buckle pin. A is a schematic diagram of the three-dimensional structure, and B is a partial sectional view of the three-dimensional structure in A.
[0026] Figure 3 A is a schematic diagram of the inward retraction of the limiting pin of the disc buckle pin. A is a schematic diagram of the three-dimensional structure, and B is a partial sectional view of the three-dimensional structure in A.
[0027] Figure 4 This is a schematic diagram showing the layout of the two limiting pins of the disc buckle pin;
[0028] Figure 5 For disc lock pins, crossbar connectors, and disc lock scaffolding;
[0029] Figure 6 This is a diagram showing the disassembly and reassembly of the disc buckle pin; a~d represent the changes in the shape of each component as it is pushed upwards.
[0030] Figure 7 This diagram shows the state of the disc buckle pin being inserted into the disc buckle. A to C represent the changes in the shape of each component as the disc buckle pin is gradually inserted and installed.
[0031] In the picture:
[0032] 100. Pin body; 110. Limiting pin groove; 111. Concave part; 120. Limiting pin; 121. Abutting protrusion; 200. U-shaped fork head; 210. Fixing plate; 211. Pin hole; 300. Disc; 310. Fixing positioning hole. Detailed Implementation
[0033] The present invention will be further described below with reference to the accompanying drawings.
[0034] Flip-lock pin, such as Figures 2-4 As shown, it includes:
[0035] The plate-shaped pin body 100 has an overall structure similar to that of a commonly used disc buckle pin. In this design, the width of the pin body 100 is increased from the pin head to the pin tail, so that it will not fall off when installed from top to bottom during use.
[0036] The pin body 100 has at least one limiting pin groove 110 on each of its two plates. The two limiting pin grooves 110 are used to accommodate the limiting pin 120 whose upper end can be turned outward. When the upper end of the limiting pin 120 is turned outward, the upper end of the limiting pin 120 protrudes from the side of the pin body 100 and forms an abutment state.
[0037] When the pin body 100 is arranged longitudinally, the upper end of the limiting pin 120 tends to protrude outward from the two plates of the pin body 100 under the action of gravity, such as... Figure 2 As shown, when the pin body 100 is arranged longitudinally, the limiting pin 120 flips outward under the action of gravity. Of course, the force that causes the limiting pin 120 to flip outward can be further enhanced by adding an elastic element (such as a spring or torsion spring) between the limiting pin 120 and the limiting pin groove 110, but this elastic element is not a necessary option in this solution.
[0038] Regarding the flipping capability of the limit pin 120, it can be achieved by hinged connection between the lower end of the limit pin 120 and the inner wall of the limit pin groove 110. The connection between the two provides the flipping axis. Of course, the initial connection is mainly for the purpose of flipping. If there are other solutions that can achieve the same purpose, they should also be regarded as equivalent solutions.
[0039] Regarding the specific form of the limiting pin 120, it may have any of the following characteristics:
[0040] The upper width of the limiting pin 120 is greater than that of the lower width, and when the limiting pin 120 is housed in the limiting pin groove 110, the center of gravity of the limiting pin 120 is located outside the hinge shaft. Its main purpose is to keep the center of gravity of the limiting pin 120 located outside the hinge shaft, so that the limiting pin 120 has a tendency to be turned outward.
[0041] In practical applications, to ensure that the limit pin 120 can smoothly turn outward and stop after turning outward to a certain extent, such as Figure 4 As shown, the lower inner wall of the limiting pin groove 110 has a concave portion 111, which increases the outward turning angle of the limiting pin 120. The inner side of the lower end of the limiting pin 120 has an abutting protrusion 121. When the limiting pin 120 turns outward from the limiting pin groove 110, its abutting protrusion 121 abuts against the concave portion 111.
[0042] The upper surface of the limiting pin 120 slopes downward from the outside to the inside, especially when it is flipped outwards, its upper surface can maintain a flat surface and abut against the lower end of the U-shaped fork head 200 as much as possible; or, the upper surface of the limiting pin 120 is an arc surface, which can still effectively maintain the abutment function when it is flipped outwards, and by setting it to an arc surface, the convenience of the disassembly process can be improved and the possibility of jamming during the disassembly process can be reduced.
[0043] The limiting pin 120 has an outward protrusion on the outer side of its middle portion, such as... Figure 6 As shown, when the middle part of the limiting pin 120 protrudes outward, the upper end of the limiting pin 120 can be better kept within the limiting pin groove 110 (for example, recessed by about 2~3mm) when the middle part of the limiting pin 120 is pressed into the limiting pin groove 110, thus preventing the limiting pin groove 110 from protruding outward and affecting disassembly. Specifically, the protruding part can be an arc segment that protrudes outward in the middle.
[0044] Regarding the positions of the two limiting pin grooves 110, the limiting pin grooves 110 on the two plates of the pin body 100 are staggered in the width direction. On the one hand, since the thickness of the disc buckle pin is limited, if the two limiting pin grooves 110 are located in the same position, it may affect the groove depth of the limiting pin grooves 110. On the other hand, the staggered setting further reduces the probability of accidental activation.
[0045] This utility model also relates to a crossbar connector, such as... Figure 1 As shown, it includes a U-shaped fork head 200 that can be fitted onto the disc buckle connecting disc. The two fixing plates 210 of the U-shaped fork head 200 are respectively provided with pin holes 211. The pin body 100 of either of the aforementioned pins can be simultaneously inserted into the pin holes 211 of the two fixing plates 210.
[0046] The length of the pin hole 211 is less than the width of the upper end of the pin body 100 but greater than the width of the lower end of the pin body 100; and the width of the pin hole 211 is adapted to the thickness of the pin body 100. When the limiting pin 120 flips out of the limiting pin groove 110, the distance between the limiting ends of the limiting pins 120 on the two plates is greater than the width of the pin hole 211, so as to ensure that the plate has abutment. In practical applications, the length of the limiting pin 120 can be set to be greater than the thickness of the disc 300, specifically 1.5 to 2 times. This ensures that when the limiting pin 120 is disassembled and passes through the fixed positioning hole 310, a portion of the limiting pin 120 is always located in the pin hole 211, preventing the limiting pin 120 from accidentally flipping outward during the passage through the fixed positioning hole 310. Furthermore, this design allows for an appropriate increase in the diameter of the fixed positioning hole 310, improving the ease of installation and disassembly. Setting the diameter of the fixed positioning hole 310 to be greater than that of the pin hole 211 reduces the difficulty of installing the disc buckle pin.
[0047] The spacing between the two fixing plates 210 of the U-shaped fork 200 is adapted to the thickness of the pin body 100. When the two limiting pin grooves 110 of the pin body 100 are located between the two fixing plates 210, the limiting pin 120 in either limiting pin groove 110 is housed within the limiting pin groove 110. Therefore, at the construction site, a tool similar to the U-shaped fork 200 can be used to disassemble the pin body 100, for example... Figure 6 As shown, when the U-shaped fork head 200 is applied upward from the bottom, the two fixed plates 210 can apply force to the two limiting pins 120 from both sides at the same time, thereby squeezing the two limiting pins 120 into the limiting pin groove 110. At this time, when the U-shaped fork head 200 is pushed upward further, the disc buckle pin can be pushed up further, making it easier to pull out the disc buckle pin from above.
[0048] Similar requirements as those mentioned above are, for example Figure 6 As shown, any limiting pin 120 of the pin body 100 has a convex arc segment in the middle. When the outer side of the arc segment is flush with the plate surface of the pin body 100, the upper outer edge of the limiting pin 120 is recessed into the groove surface of the limiting pin groove 110. Figure 6 The U-shaped fork head 200 in the figure is a schematic diagram. In the initial installation state, the upper end of the limit pin 120 generally abuts against the lower end face of the U-shaped fork head 200.
[0049] The following section provides a detailed introduction to the disc-lock scaffolding in this scheme, taking into account the aforementioned disc-lock pins and crossbar connectors.
[0050] Disc-lock scaffolding, such as Figure 1 , 5 As shown, it includes:
[0051] The disc 300 has a vertical post connected to the middle of both sides. The horizontal post can be connected to the disc 300 by a U-shaped fork head 200 and locked in place. The disc 300 has at least 4 fixing positioning holes 310 to ensure its installation versatility. Of course, it is not limited to 4. In order to achieve multi-angle installation, more holes can be added as needed. The specific number is not specifically limited here.
[0052] In any of the aforementioned crossbar connectors, the U-shaped fork 200 is forked onto the disc 300 and its pin hole 211 is aligned with any of the fixing and positioning holes 310 of the disc 300.
[0053] The aforementioned disc buckle pin passes through the aligned fixing hole 310 and pin hole 211. Specifically, after the limiting pin 120 in the limiting pin groove 110 of the disc buckle pin passes through the fixing hole 310 and pin hole 211, the upper end of the limiting pin 120 protrudes outward from the limiting pin groove 110. During the insertion process... Figure 7As shown in the diagram, after final installation, the limiting pin 120 can abut against the lower end face of the U-shaped fork head 200. Specifically, during installation, the U-shaped fork head 200 is as follows: Figure 5 The middle sleeve is attached to one side of the disc 300 (other sections can be set similarly). Then, the disc buckle pin passes through the pin hole 211 of the upper fixing plate of the U-shaped fork head 200, the fixing positioning hole 310 of the disc 300, and the pin hole 211 of the lower fixing plate in sequence from top to bottom. Finally, when the limiting pin groove 110 is protruding, the limiting pin 120 in the limiting pin groove 110 flips outward, and the distance between the two limiting pins 120 after flipping outward is greater than the diameter of the pin hole 211 of the lower fixing plate, thereby achieving the limiting function. In this structure, even if the limiting pin 120 on one side of the scaffold is accidentally touched, it can automatically flip outward under the action of gravity. Moreover, even if the limiting pin 120 on one side is accidentally touched and cannot flip outward, the limiting pin 120 on the other side can still play a limiting role, achieving double insurance for limiting. Furthermore, although double insurance is used, both limit pins 120 can still be unlocked simultaneously when disassembling using a U-shaped plug, avoiding the impact of double insurance on scaffold disassembly. Of course, using other methods to simultaneously press and unlock the limit pins 120 on both sides is also an optional solution.
[0054] Those skilled in the art will appreciate that various modifications to the above embodiments can be made without departing from the overall spirit and concept of this utility model. For any aspects not detailed herein, reference can be made to the prior art. All such modifications fall within the protection scope of this utility model. The protection scheme of this utility model is defined by the appended claims.
Claims
1. A disc buckle pin, characterized in that, include: The pin body (100) is plate-shaped, and the width of the pin body (100) increases from the pin head to the pin tail. The pin body (100) has two plates with limit pin grooves (110) respectively. The two limit pin grooves (110) are used to accommodate the limit pins (120) that can be turned outward at the top. When the pin body (100) is arranged longitudinally, the upper end of the limiting pin (120) tends to bulge outward and protrude from the two plates of the pin body (100) under the action of gravity. The lower end of the limiting pin (120) is hinged to the inner wall of the limiting pin groove (110); The lower inner wall of the limiting pin groove (110) has a concave portion (111), and the inner side of the lower end of the limiting pin (120) has an abutting protrusion (121). When the limiting pin (120) is turned outward from the limiting pin groove (110), its abutting protrusion (121) abuts against the concave portion (111).
2. The disc buckle pin according to claim 1, characterized in that, The upper width of the limiting pin (120) is greater than that of the lower width, and when the limiting pin (120) is housed in the limiting pin groove (110), the center of gravity of the limiting pin (120) is located outside the hinge shaft.
3. The disc buckle pin according to claim 1, characterized in that, The upper surface of the limiting pin (120) is inclined downward from the outside to the inside; or, the upper surface of the limiting pin (120) is an arc surface.
4. The disc buckle pin according to claim 1, characterized in that, The limiting pin grooves (110) located on the two plates of the pin body (100) are offset in the width direction; the limiting pin (120) has an outward protrusion on the outer side of the middle part.
5. A crossbar connector, characterized in that, Includes a U-shaped fork head (200) that can be fitted onto a disc buckle connecting disc, wherein the two fixing plates (210) of the U-shaped fork head (200) are respectively provided with pin holes (211), and the pin body (100) of any one of claims 1 to 4 can be simultaneously inserted into the pin holes (211) of the two fixing plates (210); The length of the pin hole (211) is less than the width of the upper end of the pin body (100) but greater than the width of the lower end of the pin body (100); and the width of the pin hole (211) is adapted to the thickness of the pin body (100). When the limiting pin (120) flips out of the limiting pin groove (110), the distance between the limiting ends of the limiting pins (120) on the two plates is greater than the width of the pin hole (211).
6. The crossbar connector according to claim 5, characterized in that, The spacing between the two fixing plates (210) of the U-shaped fork (200) is adapted to the thickness of the pin body (100). When the two limiting pin grooves (110) of the pin body (100) are located between the two fixing plates (210), the limiting pin (120) in any limiting pin groove (110) is stored in the limiting pin groove (110).
7. The crossbar connector according to claim 5, characterized in that, The middle part of any limiting pin (120) of the pin body (100) has an outwardly protruding arc segment. When the outer side of the arc segment is flush with the plate surface of the pin body (100), the upper outer edge of the limiting pin (120) is recessed into the groove surface of the limiting pin groove (110).
8. A modular scaffold, characterized in that, include: A disc (300) has a vertical rod connected to the middle of its two sides, and its surface has at least 4 fixing and positioning holes (310). The crossbar connector according to any one of claims 5 to 7 has a U-shaped fork (200) forked on a disc (300) and its pin hole (211) aligned with any fixed positioning hole (310) of the disc (300). The disc buckle pin according to any one of claims 1 to 4, wherein the disc buckle pin passes through the aligned fixing positioning hole (310) and the pin hole (211); Wherein, after the limiting pin (120) in the limiting pin groove (110) of the disc buckle pin passes through the fixed positioning hole (310) and the pin hole (211), the upper end of the limiting pin (120) is turned outward out of the limiting pin groove (110).