A mobile disc buckle structure for a scaffold

Abstract

The utility model discloses a mobile disc buckle structure for scaffold relates to scaffold technical field, including vertical tube, mobile structure, buckle disc structure and adjusting structure, and the outer periphery vertical symmetry of vertical tube is provided with two groups of clamping groove, mobile structure includes sleeve, fixed ring and clamping part, and sleeve sliding sleeve sets in the vertical tube outside, and fixed ring installs in the sleeve outer periphery, and clamping part installs on the sleeve, this mobile disc buckle structure for scaffold not only can through the cooperation of clamping part and locking structure makes the mobile adjustment of buckle disc structure and the installation fixed operation convenient, can also according to the need rotation buckle disc structure makes the bolt structure on buckle disc structure with the bolt structure position of other buckle disc structure on same horizontal height correspond, thereby makes the arrangement and installation convenient of cross bar, in addition, the adjusting structure that sets up can adjust the inclination angle of second bolt, so as to satisfy the installation demand of different inclination of inclined pole, effectively enhance the practicality of device.

Description

Technical Field

[0001] This utility model relates to the field of scaffolding technology, and more specifically, to a movable disc buckle structure for scaffolding. Background Technology

[0002] Disc-lock scaffolding (also known as disc-lock scaffolding or disc-lock frame) is a modern construction scaffolding system widely used in building construction, bridge construction, and large equipment installation projects. It is favored for its high efficiency, safety, flexibility, and ease of assembly and disassembly. Structural features: Disc-lock nodes are the core component of disc-lock scaffolding. They are usually made of steel and have multiple holes that allow horizontal and vertical bars to be inserted in different directions to form a stable structure.

[0003] Chinese invention patent CN117344959A discloses a disc-lock scaffolding structure, uprights, and scaffolding support structure. The disc-lock scaffolding structure includes a locking disc, limiting components, a restraining disc, a connector, and a locking assembly. The limiting components have a first limiting part and a second limiting part. When the locking assembly locks with the first limiting part, the connector is positioned above the locking disc. When the locking assembly locks with the second limiting part, the connector is inserted into the locking disc. This technical solution is easy to install and disassemble, requires no additional installation tools, involves less construction work, facilitates maintenance, and helps improve safety. However, the structure of the connectors on the horizontal and diagonal members differs in this technical solution. Horizontal and diagonal members need to be manufactured separately, increasing the difficulty and cost of production. Furthermore, the fixed connector structure of the diagonal members is not easily adjustable, resulting in a fixed installation method for the connectors on the diagonal members within the disc-lock structure. Therefore, it is inconvenient to adjust the installation inclination of the diagonal members as needed, leading to poor performance. Utility Model Content

[0004] In view of this, the purpose of this utility model is to provide a movable disc buckle structure for scaffolding, which makes the height of the buckle structure easy to adjust, and the buckle structure can be rotated as needed to facilitate the arrangement and installation of crossbars. In addition, the inclination of the corresponding pins can be adjusted according to the actual situation to meet the installation requirements of different inclinations of the diagonal bars, effectively enhancing the practicality of the device.

[0005] To achieve the above objectives, this utility model provides a movable disc-lock structure for scaffolding, comprising:

[0006] A vertical tube, wherein two sets of engaging grooves are symmetrically arranged vertically on the outer periphery of the vertical tube;

[0007] The movable structure includes a sleeve that is slidably sleeved on the outside of the vertical tube, a fixing ring installed on the outer periphery of the sleeve, and a locking component installed on the sleeve. The locking component is used to insert into the locking groove to restrict the vertical movement of the sleeve.

[0008] The snap-on structure includes a rotating ring sleeved on the outer periphery of the fixed ring, a mounting plate fixed on the outer periphery of the rotating ring, a plurality of first pins evenly installed in a ring on the top of the mounting plate, and a second pin rotatably installed inside the mounting plate and located on the side of the first pins near the axis of the mounting plate; the second pin has a sliding hole inside.

[0009] The adjustment structure includes a rotating shaft that passes horizontally through the second pin, a threaded block and a slider that are respectively fixed at both ends of the rotating shaft, a lead screw that passes horizontally through the threaded block along the length of the sliding hole and is rotatably connected to the rotating ring, and a smooth rod that passes horizontally through the slider along the length of the sliding hole and is fixedly connected to the rotating ring.

[0010] Furthermore, the engaging component includes a rotating rod rotatably installed inside the sleeve and an insert block installed on the side of the rotating rod near the vertical tube. The outer side of the sleeve is provided with a rotating groove corresponding to the engaging groove position, and the outer wall of the rotating rod is slidably adapted to the rotating groove.

[0011] Furthermore, the movable disc-lock structure for scaffolding also includes:

[0012] The locking structure includes several guide rods installed on the top of the fixed ring, a lifting ring slidably connected to the outside of the guide rods, and an elastic element sleeved on the outside of the guide rods and fixedly connected to the lifting ring and the fixed ring. The guide rods and the rotating rods are arranged alternately, and the lifting rings are provided with fitting holes that are adapted to slide with the rotating rods in the vertical state.

[0013] Furthermore, a plurality of sliding blocks are vertically installed on the inner wall of the sleeve, and a sliding groove is vertically opened on the outer wall of the vertical tube to slide and adapt to the sliding blocks. The sliding blocks and the engaging groove are staggered.

[0014] Furthermore, the mounting plate has a swing opening adapted to the width of the second pin, and the second pin has a rotating shaft that is rotatably connected to the inner wall of the swing opening.

[0015] Furthermore, the outer wall of the fixing ring is provided with a plurality of uniformly distributed circular clearance grooves, the width of which is greater than the width of the second pin.

[0016] Furthermore, the bottom of the mounting plate is fixedly connected to a mounting plate corresponding to the position of the second pin, the end of the optical rod away from the rotating ring is fixedly connected to the mounting plate, the lead screw passes horizontally through the mounting plate, and the lead screw is rotatably connected to the mounting plate.

[0017] Furthermore, an operating block is provided at the end of the lead screw away from the rotating ring.

[0018] Furthermore, the outer periphery of the fixed ring is provided with an annular groove, the outer wall dimension of the portion of the fixed ring above the annular groove is larger than the outer wall dimension of the portion of the fixed ring below the annular groove, the cross-sectional shape of the rotating ring is inverted L-shaped, and the lateral portion of the rotating ring is slidably adapted to the annular groove on the fixed ring.

[0019] Furthermore, the movable disc-lock structure for scaffolding also includes:

[0020] The crossbar and the diagonal bar are both composed of straight tubes and connectors.

[0021] Compared with the prior art, this utility model has the following advantages and effects:

[0022] 1. The movable disc-lock structure for scaffolding in this utility model can change the position of the disc structure on the vertical tube by adjusting the movable structure. This facilitates the movement, adjustment, installation, and fixing of the disc structure by cooperating with the locking components and locking structure, making it convenient to adjust the position of the disc structure as needed. The disc structure can rotate around the outer periphery of the movable structure, allowing the position of the pin structure to be adjusted according to actual needs. This ensures that the pin structure on the disc structure corresponds to the pin structure of other disc structures at the same horizontal height, thus facilitating the arrangement and installation of the horizontal bars. Furthermore, the tilt angle of the second pin can be adjusted by the adjustable structure to meet the installation requirements of different tilt angles of the diagonal bars, enhancing the practicality and effectiveness of the device.

[0023] 2. The movable disc-lock structure for scaffolding in this utility model makes the structure of the horizontal bars and diagonal bars consistent through the setting of the connecting parts, with only the bar lengths differing. Therefore, when preparing the horizontal bars and diagonal bars, they can be manufactured in a unified manner, which greatly reduces the difficulty and cost of preparing the horizontal bars and diagonal bars. Attached Figure Description

[0024] Figure 1 This is a schematic diagram of the top three-dimensional structure of the movable disc-lock structure for scaffolding in an embodiment of this utility model;

[0025] Figure 2 This is a schematic diagram of the bottom three-dimensional structure of the movable disc-lock structure for scaffolding in an embodiment of this utility model;

[0026] Figure 3 This is a schematic diagram of the front half-section of the movable disc-lock structure for scaffolding in an embodiment of this utility model;

[0027] Figure 4This is a top cross-sectional view of the adjustment structure of the movable disc-lock structure for scaffolding in an embodiment of this utility model.

[0028] Figure 5 This is a top cross-sectional view of the sleeve of the movable disc-lock structure for scaffolding in an embodiment of the present utility model.

[0029] Figure 6 This is a schematic diagram of the installation structure of the horizontal and diagonal bars of the movable disc-lock structure used for scaffolding in an embodiment of this utility model.

[0030] Explanation of reference numerals in the attached figures:

[0031] 1-Vertical pipe;

[0032] 11-Modulating groove; 12-Sliding groove;

[0033] 2-Moving structure;

[0034] 21-Sleeve; 211-Sliding block; 22-Fixing ring; 221-Allowing groove; 23-Rotating rod; 24-Insertion block;

[0035] 3-Locking structure;

[0036] 31-Lifting ring; 32-Guide rod; 33-Elastic element;

[0037] 4-Closure plate structure;

[0038] 41-Rotating ring; 42-Mounting plate; 421-Swing port; 43-First pin; 44-Second pin; 441-Sliding hole;

[0039] 5-Adjustment structure;

[0040] 51-Mounting plate; 52-Lead screw; 53-Smooth rod; 54-Threaded block; 55-Slider; 56-Rotating shaft;

[0041] 6-Horizontal bar; 7-Diagonal bar; 8-Connector. Detailed Implementation

[0042] The technical solution of this utility model will now be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0043] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can also refer to the internal connection of two components; and they can refer to a wireless connection or a wired connection. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0044] Please see Figure 1-6 As shown, this utility model embodiment provides a movable disc-lock structure for scaffolding, including a vertical tube 1, a movable structure 2, a locking disc structure 4, and an adjusting structure 5, wherein:

[0045] Two sets of locking grooves 11 are symmetrically arranged on the outer periphery of the vertical tube 1; as a further description of the above scheme, the vertical tube 1 is an optimized design for the upright of the scaffold, and its installation and use method is the same as that of the upright of the scaffold.

[0046] The movable structure 2 includes a sleeve 21, a fixing ring 22, and a locking component. The sleeve 21 is slidably sleeved on the outside of the vertical tube 1, the fixing ring 22 is installed on the outer periphery of the sleeve 21, and the locking component is installed on the sleeve 21. The locking component is used to insert into the locking groove 11 to restrict the vertical movement of the sleeve 21. This allows for easy adjustment of the height of the disc buckle structure by adjusting the position of the movable structure 2, and the locking component restricts the movement of the movable structure 2, thereby achieving the fixation of the disc buckle structure.

[0047] The buckle structure 4 includes a rotating ring 41, a mounting plate 42, a first pin 43, and a second pin 44. The rotating ring 41 is sleeved on the outer periphery of the fixed ring 22, and the mounting plate 42 is fixed on the outer periphery of the rotating ring 41. Several first pins 43 are evenly installed in a ring on the top of the mounting plate 42. The second pins 44 are rotatably installed inside the mounting plate 42 and are located on the side of the first pins 43 closest to the axis of the mounting plate 42. The second pins 44 have a sliding hole 441 inside. This facilitates the installation of the crossbar 6 between two adjacent vertical pipes 1 using the first pins 43, and by adjusting the inclination of the second pins 44, the connection of the diagonal bar 7 between two adjacent vertical pipes 1 can be made convenient.

[0048] The adjustment structure 5 includes a rotating shaft 56, a threaded block 54, a slider 55, a lead screw 52, ​​and a smooth rod 53. The rotating shaft 56 passes horizontally through the sliding hole 441 on the second pin 44. The threaded block 54 and the slider 55 are fixed at both ends of the rotating shaft 56. The lead screw 52 passes horizontally through the threaded block 54 along the length of the sliding hole 441 and is rotatably connected to the rotating ring 41. The smooth rod 53 passes horizontally through the slider 55 along the length of the sliding hole 441 and is fixedly connected to the rotating ring 41. By rotating the lead screw 52, ​​the threaded block 54 can drive the rotating shaft 56 to slide within the sliding hole 441, thereby facilitating the rotation of the second pin 44 and thus adjusting the inclination of the second pin 44.

[0049] As a further description of the above technical solution, the height of the buckle structure 4 can be adjusted by adjusting the position of the moving structure 2 on the vertical pipe 1. When the moving structure 2 moves to the preset position, the movement of the moving structure 2 can be restricted by the locking component, thereby fixing the moving structure 2 on the vertical pipe 1. Then, the rotating ring 41 needs to be rotated according to the installation position of other vertical pipes 1, so that the first pin 43 on the buckle structure 4 corresponds to the first pin 43 on other buckle structures 4. At this time, the first pin 43 can be used to arrange the crossbar 6 between two adjacent vertical pipes 1. In addition, when it is necessary to arrange the diagonal bar 7 between two vertical pipes 1, the inclination of the second pin 44 can be adjusted to facilitate the installation of the diagonal bar 7.

[0050] Please see Figure 1-3 As shown, the engaging component includes a rotating rod 23 and an insert 24. The rotating rod 23 is rotatably mounted inside the sleeve 21, and the insert 24 is mounted on the side of the rotating rod 23 near the vertical tube 1. The outer side of the sleeve 21 has a rotating groove corresponding to the position of the engaging groove 11. The outer wall of the rotating rod 23 is slidably adapted to the rotating groove. When the rotating rod 23 rotates toward the vertical tube 1, the insert 24 on the rotating rod 23 can extend into the engaging groove 11 of the vertical tube 1, so as to restrict the movement of the sleeve 21 in the moving structure 2 by means of the interlocking effect of the insert 24 and the engaging groove 11. In addition, when the rotating rod 23 rotates away from the vertical tube 1, the restriction on the movement of the sleeve 21 in the moving structure 2 can be released.

[0051] Please see Figure 1-3 As shown, the movable disc-lock structure for scaffolding also includes a locking structure 3, wherein:

[0052] The locking structure 3 includes a guide rod 32, a lifting ring 31, and an elastic element 33. Several guide rods 32 are evenly installed in a ring on the top of the fixed ring 22. The lifting ring 31 is slidably connected to the outside of the guide rod 32. The elastic element 33 is sleeved on the outside of the guide rod 32 and is fixedly connected to the lifting ring 31 and the fixed ring 22. The guide rod 32 and the rotating rod 23 are staggered. The lifting ring 31 has a fitting hole that is adapted to slide with the rotating rod 23 in the vertical state.

[0053] When the rotating rod 23 is in a vertical position, the rotating rod 23 can pass through the fitting hole of the lifting ring 31 by moving the lifting ring 31. At this time, the lifting ring 31 can restrict the rotation of the rotating rod 23, thereby locking the rotating rod 23 by the downward pulling action of the elastic element 33 on the lifting ring 31, and further preventing the sleeve 21 in the moving structure 2 from slipping on the vertical tube 1. In addition, when the lifting ring 31 moves up to above the rotating rod 23, the restriction on the rotation of the rotating rod 23 can be released.

[0054] Please see Figure 5 As shown, several sliding blocks 211 are vertically installed on the inner wall of the sleeve 21, and a sliding groove 12 that is adapted to slide the sliding blocks 211 is vertically opened on the outer wall of the vertical tube 1. The sliding blocks 211 and the locking groove 11 are staggered. This allows the movement of the sliding blocks 211 in the sliding groove 12 to limit the relative rotation of the vertical tube 1 and the sleeve 21, and prevents the locking groove 11 from deviating from the insert block 24 on the rotating rod 23.

[0055] Please see Figure 1-4 As shown, the mounting plate 42 has a swing opening 421 that matches the width of the second pin 44. The second pin 44 has a rotating shaft that is rotatably connected to the inner wall of the swing opening 421. This allows the second pin 44 to rotate around the axis of the rotating shaft in the swing opening 421 of the mounting plate 42, thereby achieving tilt adjustment of the second pin 44.

[0056] Please see Figure 1-3 As shown, the outer wall of the fixing ring 22 is provided with a number of uniformly arranged circular clearance grooves 221, and the width of the clearance grooves 221 is greater than the width of the second pin 44; this is to prevent the fixing ring 22 from affecting the rotation of the second pin 44 when the second pin 44 rotates, and to prevent the diagonal rod 7 from hitting the fixing ring 22 when the diagonal rod 7 is installed.

[0057] Please see Figure 2-4 As shown, the bottom of the mounting plate 42 is fixedly connected to a mounting plate 51 corresponding to the position of the second pin 44. The end of the smooth rod 53 away from the rotating ring 41 is fixedly connected to the mounting plate 51. The lead screw 52 passes horizontally through the mounting plate 51 and is rotatably connected to the mounting plate 51. This facilitates the use of the mounting plate 51 to improve the installation stability of the lead screw 52 and the smooth rod 53.

[0058] Please see Figure 1-4 As shown, an operating block is provided at the end of the lead screw 52 away from the rotating ring 41, which facilitates the rotation of the lead screw 52 by rotating the operating block, thus making the rotation operation of the lead screw 52 convenient.

[0059] Please see Figure 3-4As shown, an annular groove is provided on the outer periphery of the fixing ring 22. The outer wall dimension of the part of the fixing ring 22 above the annular groove is larger than the outer wall dimension of the part of the fixing ring 22 below the annular groove. This allows the rotating ring 41 to fit into the fixing ring 22, thereby effectively improving the placement stability of the rotating ring 41 without affecting its rotation around the axis of the fixing ring 22.

[0060] Please see Figure 3-4 As shown, the cross-sectional shape of the rotating ring 41 is an inverted L-shape, and the lateral part of the rotating ring 41 slides and adapts to the annular groove on the fixed ring 22; the setting of the annular groove makes it easy to make the installation of the rotating ring 41 stable, and the shape design of the rotating ring 41 makes the installation of the lead screw 52 and the guide rod 53 convenient.

[0061] Please see Figure 6 As shown, the movable disc-lock structure for scaffolding also includes horizontal bars 6 and diagonal bars 7, both of which are composed of straight tubes and connectors 8; the difference between horizontal bars 6 and diagonal bars 7 is their length.

[0062] The working process of the aforementioned movable disc-lock structure for scaffolding is as follows:

[0063] When using this movable disc-lock structure for scaffolding, the first step is to install and fix the vertical pipe 1. Then, the movable structure 2 is fitted onto the vertical pipe 1 using the sleeve 21, with the two adjacent movable disc-lock structures facing opposite directions. The position of the movable structure 2 on the vertical pipe 1 is then adjusted according to actual needs. When the movable structure 2 moves to the preset position, the insert 24 engages with the locking groove 11 on the vertical pipe 1 by rotating the rotating rod 23 in the locking component, thereby restricting the movement of the movable structure 2. In addition, after the insert 24 extends into the locking groove 11, the position of the lifting ring 31 can be adjusted so that the rotating rod 23 passes through the locking ring 31 through the fitting hole, thereby restricting the rotation of the rotating rod 23 and ensuring the stable installation of the movable structure 2.

[0064] After the position of the movable structure 2 is fixed, the rotating ring 41 needs to be rotated according to the installation position of the adjacent vertical pipe 1 so that the first pin 43 on the buckle structure 4 corresponds to the first pin 43 in other buckle structures 4 at the same horizontal height. At this time, the first pin 43 can be used to arrange the crossbar 6 between the two adjacent vertical pipes 1. When installing the crossbar 6, the connector 8 on the crossbar 6 needs to be sleeved on the first pin 43 so as to use the crossbar 6 to connect the buckle structures 4 on the two adjacent vertical pipes 1.

[0065] In addition, when installing the diagonal rod 7, it is necessary to first adjust the inclination of the second pin 44 on the buckle structure 4 according to the distance between the upper and lower buckle structures 4, and make the second pin 44 on the two buckle structures 4 to be installed parallel. Then, the installation and fixing of the diagonal rod 7 can be completed by using the connector 8.

[0066] When adjusting the inclination of the second pin 44, the operating block needs to be rotated to drive the lead screw 52 to rotate, so that the threaded block 54 rotates with the lead screw 52 to drive the rotating shaft 56 to move laterally, thereby cooperating with the sliding of the rotating shaft 56 in the sliding hole 441 to drive the second pin 44 to rotate, thereby realizing the adjustment of the inclination of the second pin 44.

[0067] Although the present invention has been disclosed above, its protection scope is not limited thereto. Those skilled in the art can make various changes and modifications without departing from the spirit and scope of this disclosure, and all such changes and modifications will fall within the protection scope of this invention.

Claims

1. A movable disc-lock structure for scaffolding, characterized in that, include: The vertical tube (1) has two sets of locking grooves (11) arranged vertically symmetrically on its outer periphery. The movable structure (2) includes a sleeve (21) slidably sleeved on the outside of the vertical tube (1), a fixing ring (22) installed on the outer periphery of the sleeve (21), and a locking component installed on the sleeve (21). The locking component is used to insert into the locking groove (11) to restrict the up and down movement of the sleeve (21). The snap-on structure (4) includes a rotating ring (41) sleeved on the outer periphery of the fixed ring (22), a mounting plate (42) fixed on the outer periphery of the rotating ring (41), a plurality of first pins (43) evenly installed in a ring on the top of the mounting plate (42), and a second pin (44) rotatably installed inside the mounting plate (42) and located on the side of the first pins (43) near the axis of the mounting plate (42); the second pin (44) has a sliding hole (441) inside. The adjustment structure (5) includes a rotating shaft (56) that passes horizontally through the second pin (44), a threaded block (54) and a slider (55) that are respectively fixed at both ends of the rotating shaft (56), a lead screw (52) that passes horizontally through the threaded block (54) along the length direction of the sliding hole (441) and is rotatably connected to the rotating ring (41), and a smooth rod (53) that passes horizontally through the slider (55) along the length direction of the sliding hole (441) and is fixedly connected to the rotating ring (41).

2. The movable disc-lock structure for scaffolding according to claim 1, characterized in that, The engaging component includes a rotating rod (23) rotatably installed inside the sleeve (21) and an insert (24) installed on the side of the rotating rod (23) near the vertical tube (1). The outer side of the sleeve (21) is provided with a rotating groove corresponding to the position of the engaging groove (11), and the outer wall of the rotating rod (23) is slidably adapted to the rotating groove.

3. The movable disc-lock structure for scaffolding according to claim 2, characterized in that, Also includes: The locking structure (3) includes several guide rods (32) installed on the top of the fixed ring (22), a lifting ring (31) slidably connected to the outside of the guide rods (32), and an elastic element (33) sleeved on the outside of the guide rods (32) and fixedly connected to the lifting ring (31) and the fixed ring (22). The guide rods (32) and the rotating rod (23) are staggered. The lifting ring (31) is provided with a fitting hole that is slidably adapted to the rotating rod (23) in the vertical state.

4. The movable disc-lock structure for scaffolding according to claim 1, characterized in that, The inner wall of the sleeve (21) is vertically equipped with a number of sliding blocks (211), and the outer wall of the vertical tube (1) is vertically provided with a sliding groove (12) that is adapted to slide the sliding blocks (211). The sliding blocks (211) and the locking groove (11) are staggered.

5. The movable disc-lock structure for scaffolding according to claim 1, characterized in that, The mounting plate (42) has a swing opening (421) that matches the width of the second pin (44), and the second pin (44) has a rotating shaft that is rotatably connected to the inner wall of the swing opening (421).

6. The movable disc-lock structure for scaffolding according to claim 1, characterized in that, The outer wall of the fixing ring (22) is provided with a plurality of uniformly distributed circular clearance grooves (221), the width of which is greater than the width of the second pin (44).

7. The movable disc-lock structure for scaffolding according to claim 1, characterized in that, The bottom of the mounting plate (42) is fixedly connected to a mounting plate (51) corresponding to the position of the second pin (44). The end of the light rod (53) away from the rotating ring (41) is fixedly connected to the mounting plate (51). The lead screw (52) passes horizontally through the mounting plate (51) and is rotatably connected to the mounting plate (51).

8. The movable disc-lock structure for scaffolding according to claim 1, characterized in that, An operating block is provided at the end of the lead screw (52) away from the rotating ring (41).

9. The movable disc-lock structure for scaffolding according to claim 1, characterized in that, The outer periphery of the fixed ring (22) is provided with an annular groove. The outer wall dimension of the portion of the fixed ring (22) above the annular groove is larger than the outer wall dimension of the portion of the fixed ring (22) below the annular groove. The cross-sectional shape of the rotating ring (41) is inverted L-shaped, and the lateral portion of the rotating ring (41) is slidably adapted to the annular groove on the fixed ring (22).

10. The movable disc-lock structure for scaffolding according to claim 9, characterized in that, Also includes: The horizontal bar (6) and the diagonal bar (7) are both composed of a straight tube and a connector (8).

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