A movable scaffold device with step structure and adjustable leg height

Abstract

The utility model provides a movable scaffold device of adjustable support leg height on ladder type structure belongs to building construction technical field. The movable scaffold device of adjustable support leg height on ladder type structure, the adjustable support leg includes the sleeve pipe, is provided with the support plate at the bottom of sleeve pipe, the top of sleeve pipe is inserted with the outer thread support pole, the bottom of scaffold column is revolvedly matched with the top of outer thread support pole, the inside of sleeve pipe is provided with multiple internal thread arc plates of radial displacement and circular array distribution, the internal thread arc plate can be connected with the outer thread support pole through inboard displacement, multiple positioning blocks of inboard and outboard displacement on sleeve pipe are sequentially arranged below the internal thread arc plate, the surface of outer thread support pole is equidistantly provided with multiple positioning grooves which are annular, and the positioning block is inserted into the positioning groove on the inboard side through inboard displacement. The utility model has the advantages of convenient height adjustment, good supporting and stable effect, long service life.

Description

Technical Field

[0001] This utility model relates to the field of building construction technology, specifically to a movable scaffolding device with adjustable leg height on a stepped structure. Background Technology

[0002] Scaffolding is one of the most commonly used platform devices in construction operations. Scaffolding installed on stairs is typically used to provide a safe and stable working platform for high-altitude operations such as stair construction, maintenance, or cleaning. As one of the mainstream forms of scaffolding, disc-lock scaffolding is widely used due to its ease of assembly and disassembly and strong stability. To facilitate height adjustment, the common structural form of current scaffolding legs is a threaded connection between the uprights and sleeves, achieving both height adjustment and real-time fixation. However, in the existing method, the threads at the threaded connection must bear the weight of the entire scaffolding, and after a period of use, thread wear and stripping are highly likely. Therefore, this application provides a movable scaffolding device with adjustable leg height on a stepped structure. Utility Model Content

[0003] To solve the above-mentioned technical problems, this utility model proposes a movable scaffolding device with adjustable outrigger height on a stepped structure, which features convenient outrigger height adjustment, good support stability, and high strength.

[0004] The technical solution of this utility model is implemented as follows: A movable scaffolding device with adjustable outrigger height on a stepped structure, wherein the adjustable outrigger includes a sleeve, a support plate is provided at the bottom end of the sleeve, and an externally threaded support rod is inserted into the top end of the sleeve. The top end of the externally threaded support rod is rotatably engaged with the bottom end of the scaffolding column. The inside of the sleeve is provided with a plurality of internally threaded arc-shaped plates that can be radially displaced and are arranged in a circular array. The internally threaded arc-shaped plates can be threadedly connected to the externally threaded support rod by inward displacement. A plurality of positioning blocks that can be displaced inward and outward on the sleeve are arranged sequentially below the internally threaded arc-shaped plates. A plurality of annular positioning grooves are equidistantly arranged on the surface of the externally threaded support rod. The positioning blocks are inserted into the positioning grooves located on their inner side by inward displacement.

[0005] Furthermore, a first inner pressure block is provided on the outer side of the internally threaded arc plate, a second inner pressure block is provided on the outer side of the positioning block, and an inner pressure ring is slidably sleeved on the outside of the sleeve. The inner pressure ring moves to the outside of the first inner pressure block and pushes the internally threaded arc plate inward. The inner pressure ring moves to the outside of the second inner pressure block and presses the positioning block into the positioning groove.

[0006] Furthermore, the bottom of the outer side of the first inner pressure block and the top of the outer side of the second inner pressure block are both set as inclined surfaces. The inner pressure ring is provided with a groove that can fit the first inner pressure block and the second inner pressure block, and the upper and lower ends of the inner wall of the groove are set to match the inclined surface.

[0007] Furthermore, a synchronization plate is provided at the bottom end of the second inner pressure block, and the bottom end of the synchronization plate extends to the top end of the outer side of the next second inner pressure block. The synchronization plate is used to cause all the second inner pressure blocks below it to move inward synchronously when one of the second inner pressure blocks moves inward.

[0008] Furthermore, a strip-shaped through groove is formed on the surface of the sleeve, and the first inner pressure block, the second inner pressure block, and the synchronization plate are all located in the strip-shaped through groove.

[0009] Furthermore, the sleeve is provided with a sliding rod and a threaded rod on its exterior. The sliding rod passes through the sleeve, and the threaded rod is threadedly connected to the sleeve to drive the sleeve to move up and down.

[0010] Furthermore, the inner walls at both ends of the positioning groove are inclined, and the inner side of the positioning block is configured to match the shape of the positioning groove.

[0011] Furthermore, the internally threaded arc-shaped plate is located at the top end of the sleeve, and the length of the internally threaded arc-shaped plate is greater than the axial length of the positioning groove.

[0012] Furthermore, an auxiliary positioning groove is provided at the bottom end of the outer side of the external threaded support rod, and the auxiliary positioning groove is configured to correspond to the upper half of the positioning groove.

[0013] This utility model has the following beneficial effects: The outrigger height can be adjusted by moving the internally threaded arc plate inward and connecting it to the externally threaded support rod, then rotating the externally threaded support rod. After the outrigger height is adjusted, the positioning block is moved inward and inserted into the positioning groove, and the entire scaffold is supported by the cooperation between the positioning block and the positioning groove. Furthermore, while the positioning block and positioning groove are supporting the entire scaffold, the internally threaded arc plate can be moved outward and separated from the externally threaded support rod. Compared to existing technologies that use a simple threaded connection for height adjustment and support in adjustable outriggers, this application avoids the thread wear and stripping risks associated with threaded connections during support, thus improving service life, stability, strength, and construction safety. Attached Figure Description

[0014] Figure 1 This is an overall schematic diagram of the movable scaffolding device with adjustable leg height on a stepped structure according to this utility model; Figure 2 This is a utility model Figure 1 Enlarged view of point A in the middle; Figure 3 This is a utility model Figure 2 A schematic diagram showing the sleeve hidden in the middle; Figure 4 This is a schematic diagram of the sleeve of this utility model; Figure 5 This is a schematic diagram of the inner pressure ring of this utility model.

[0015] In the diagram: 1. Sleeve; 2. Support plate; 3. External threaded support rod; 4. Internal threaded arc plate; 5. Positioning block; 6. Positioning groove; 7. First internal pressure block; 8. Second internal pressure block; 9. Internal pressure ring; 10. Sleeve groove; 11. Synchronizing plate; 12. Strip through groove; 13. Slide rod; 14. Threaded rod; 15. Auxiliary positioning groove; 16. Scaffolding column. Detailed Implementation

[0016] The technical solutions in the embodiments of this utility model will be clearly and completely described below. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0017] like Figures 1 to 5 As shown in the figure, this embodiment provides a movable scaffolding device with adjustable outrigger height on a stepped structure. The adjustable outrigger includes a sleeve 1. A support plate 2 is provided at the bottom end of the sleeve 1. An externally threaded support rod 3 is inserted into the top end of the sleeve 1. The top end of the externally threaded support rod 3 is rotatably engaged with the bottom end of the scaffolding column 16. The inside of the sleeve 1 is provided with a plurality of internally threaded arc-shaped plates 4 that can be radially displaced and are arranged in a circular array. The internally threaded arc-shaped plates 4 can be threadedly connected to the externally threaded support rod 3 by inward displacement. A plurality of positioning blocks 5 that can be displaced inward and outward on the sleeve 1 are arranged sequentially below the internally threaded arc-shaped plates 4. A plurality of annular positioning grooves 6 are equidistantly arranged on the surface of the externally threaded support rod 3. The positioning blocks 5 are inserted into the positioning grooves 6 located on their inner side by inward displacement.

[0018] In the initial state, the positioning block 5 is inserted into the positioning groove 6. The cooperation between the positioning block 5 and the positioning groove 6 provides support and positioning for the externally threaded support rod 3, resulting in greater stability and strength, and fully ensuring the safety of construction operations. Simultaneously, the internally threaded arc plate 4 is separated from the externally threaded support rod 3. Therefore, the pressure and weight of the scaffold are not transmitted to the threads, better protecting the threads on both the internally threaded arc plate 4 and the externally threaded support rod 3, extending their service life, and preventing scaffold instability caused by thread wear or stripping.

[0019] When adjusting the height of the outrigger, first move the internal threaded arc plate 4 inward to form a threaded connection with the external threaded support rod 3. Then, move the positioning block 5 outward to disengage it from the positioning groove 6. After that, simply rotate the external threaded support rod 3 to adjust the height of the outrigger.

[0020] The outer side of the internally threaded arc plate 4 is provided with a first internal pressure block 7, the outer side of the positioning block 5 is provided with a second internal pressure block 8, and the sleeve 1 is slidably fitted with an internal pressure ring 9. When the internal pressure ring 9 moves to the outside of the first internal pressure block 7, it pushes the internally threaded arc plate 4 inward. When the internal pressure ring 9 moves to the outside of the second internal pressure block 8, it presses the positioning block 5 into the positioning groove 6.

[0021] By moving the inner pressure ring 9 upward or downward respectively, the first inner pressure block 7 and the second inner pressure block 8 can be driven to move inward. This method makes it more convenient and faster to realize the radial displacement of the first inner pressure block 7 and the second inner pressure block 8 in the sleeve 1.

[0022] Especially when the positioning block 5 and the positioning groove 6 are used to position and support the external threaded support rod 3, the pressure of the scaffold will be converted into an outward force exerted by the positioning block 5 on the inner pressure ring 9. The inner pressure ring 9 has an integral ring structure, and the outward force received by each part will be effectively dispersed and evenly distributed, which greatly improves stability and strength.

[0023] The bottom of the outer side of the first inner pressure block 7 and the top of the outer side of the second inner pressure block 8 are both set as inclined surfaces. The inner pressure ring 9 is provided with a groove 10 that can fit the first inner pressure block 7 and the second inner pressure block 8, and the upper and lower ends of the inner wall of the groove 10 are set to match the inclined surface.

[0024] Using the inclined surface at the top of the groove 10, during the upward displacement of the inner pressure ring 9, the inclined surface at the top of the groove 10 engages with the inclined surface on the upper side of the first inner pressure block 7, pressing the first inner pressure block 7 inward, causing the internally threaded arc plate 4 to move inward. Using the inclined surface at the bottom of the groove 10, during the downward displacement of the inner pressure ring 9, the inclined surface at the top of the groove 10 engages with the inclined surface on the upper side of the second inner pressure block 8, pressing the second inner pressure block 8 inward, causing the positioning block 5 to move inward and insert into the corresponding positioning groove 6. Simultaneously, when the inner pressure ring 9 presses the first inner pressure block 7 inward, the inner pressure ring 9 separates from the second inner pressure block 8; when the inner pressure ring 9 presses the second inner pressure block 8 inward, the inner pressure ring 9 separates from the first inner pressure block 7.

[0025] The bottom end of the second inner pressure block 8 is provided with a synchronization plate 11. The bottom end of the synchronization plate 11 extends to the top of the outer side of the next second inner pressure block 8. The synchronization plate 11 is used to make all the second inner pressure blocks 8 below it move inward synchronously when one of the second inner pressure blocks 8 moves inward.

[0026] By setting the synchronization plate 11, when any second inner pressure block 8 located above is squeezed and displaced inward by the inner pressure ring 9 in the height direction, all second inner pressure blocks 8 located below that second inner pressure block 8 will move inward synchronously, so that more positioning blocks 5 and positioning grooves 6 can cooperate to achieve positioning and support of the external thread support rod 3, thereby improving stability and strength.

[0027] Specifically, in this embodiment, the inner pressure ring 9 is always displaced between the first inner pressure block 7 and the uppermost second inner pressure block 8, and the inner pressure ring 9 moves to the outside of the uppermost second inner pressure block 8 so that all the second inner pressure blocks 8 are displaced inward to the position when inserted into the positioning groove 6.

[0028] A strip-shaped through groove 12 is formed on the surface of the sleeve 1, and the first inner pressure block 7, the second inner pressure block 8, and the synchronization plate 11 are all located in the strip-shaped through groove 12. The strip-shaped through groove 12 has the effect of guiding and limiting the displacement of the first inner pressure block 7, the second inner pressure block 8, and the synchronization plate 11. At the same time, it allows the outer surfaces of the first inner pressure block 7 and the second inner pressure block 8 to be located outside the sleeve 1 so that they can be pressured by the inner pressure ring 9.

[0029] The sleeve 1 is provided with a sliding rod 13 and a threaded rod 14 on its exterior. The sliding rod 13 passes through the sleeve 1, and the threaded rod 14 is threadedly connected to the sleeve 1 to drive the sleeve 1 to move up and down. By rotating the threaded rod 14, the movement of the inner pressure ring 9 on the sleeve 1 can be controlled.

[0030] The inner walls of both the upper and lower ends of the positioning groove 6 are inclined, and the inner side of the positioning block 5 is designed to match the shape of the positioning groove 6. With this design, when the inner pressure ring 9 leaves the second inner pressure block 8, the positioning groove 6 can automatically push the positioning block 5 outward when the external thread support rod 3 moves up and down, so that the positioning block 5 will not obstruct the lifting and lowering movement of the external thread support rod 3.

[0031] The internally threaded arc plate 4 is located at the top opening of the sleeve 1, and the length of the internally threaded arc plate 4 is greater than the axial length of the positioning groove 6. This arrangement allows the externally threaded support rod 3 to have the maximum lifting distance.

[0032] An auxiliary positioning groove 15 is provided at the bottom of the outer side of the external threaded support rod 3, and the auxiliary positioning groove 15 is configured to correspond to the upper half of the positioning groove 6. This configuration ensures that when the external threaded support rod 3 moves upward, and when the inner pressure block presses the second positioning block 5 inward, there is always a positioning block 5 inserted into the auxiliary positioning groove 15, achieving the effect of supporting the bottom of the external threaded support rod 3, thereby improving stability and strength.

[0033] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A movable scaffolding device with adjustable leg height on a stepped structure, characterized in that, The adjustable outrigger includes a sleeve (1), with a support plate (2) at the bottom end of the sleeve (1) and an external threaded support rod (3) inserted at the top end of the sleeve (1). The top end of the external threaded support rod (3) is rotatably engaged with the bottom end of the scaffold column (16). The sleeve (1) is provided with multiple internal threaded arc plates (4) that are radially displaceable and arranged in a circular array. The internal threaded arc plates (4) can be threadedly connected to the external threaded support rod (3) by inward displacement. Multiple positioning blocks (5) that can move inward and outward on the sleeve (1) are arranged sequentially below the internal threaded arc plates (4). Multiple annular positioning grooves (6) are equidistantly arranged on the surface of the external threaded support rod (3). The positioning blocks (5) are inserted into the positioning grooves (6) located on their inner side by inward displacement.

2. A mobile scaffolding apparatus of stepped construction with adjustable height of the legs as claimed in claim 1, characterized in that, The outer side of the internally threaded arc plate (4) is provided with a first internal pressure block (7), the outer side of the positioning block (5) is provided with a second internal pressure block (8), and the sleeve (1) is slidably fitted with an internal pressure ring (9). The internal pressure ring (9) moves to the outside of the first internal pressure block (7) and pushes the internally threaded arc plate (4) inward. The internal pressure ring (9) moves to the outside of the second internal pressure block (8) and presses the positioning block (5) into the positioning groove (6).

3. A mobile scaffolding apparatus of stepped construction with adjustable height of the legs as claimed in claim 2, characterized in that The bottom of the outer side of the first inner pressure block (7) and the top of the outer side of the second inner pressure block (8) are both set as inclined surfaces. The inner pressure ring (9) is provided with a sleeve groove (10) that can fit the first inner pressure block (7) and the second inner pressure block (8), and the upper and lower ends of the inner wall of the sleeve groove (10) are set to match the inclined surface.

4. The movable scaffolding device with adjustable leg height on a stepped structure as described in claim 3, characterized in that, The bottom end of the second inner pressure block (8) is provided with a synchronization plate (11), the bottom end of the synchronization plate (11) extends to the top of the outer side of the next second inner pressure block (8), and the synchronization plate (11) is used to make all the second inner pressure blocks (8) below it move inward synchronously when one of the second inner pressure blocks (8) moves inward.

5. A mobile scaffolding apparatus of stepped construction with adjustable height of the legs as claimed in claim 4, characterized in that The sleeve (1) has a strip-shaped through groove (12) on its surface, and the first inner pressure block (7), the second inner pressure block (8) and the synchronization plate (11) are all located in the strip-shaped through groove (12).

6. The movable scaffolding device with adjustable leg height on a stepped structure as described in claim 2, characterized in that, The sleeve (1) is provided with a slide rod (13) and a threaded rod (14) on its outside. The slide rod (13) passes through the sleeve (1), and the threaded rod (14) is threadedly connected to the sleeve (1) to drive the sleeve (1) to rise and fall.

7. A mobile scaffolding apparatus of stepped construction with adjustable height of the legs, according to claim 1, characterized in that, The inner walls of the upper and lower ends of the positioning groove (6) are both inclined, and the inner side of the positioning block (5) is configured to match the shape of the positioning groove (6).

8. The movable scaffolding device with adjustable leg height on a stepped structure as described in claim 7, characterized in that, The internally threaded arc plate (4) is located at the top end of the sleeve (1), and the length of the internally threaded arc plate (4) is greater than the axial length of the positioning groove (6).

9. A movable scaffolding device with adjustable leg height on a stepped structure as described in claim 1, characterized in that, An auxiliary positioning groove (15) is provided at the bottom of the outer side of the external threaded support rod (3), and the auxiliary positioning groove (15) is configured to correspond to the upper half of the positioning groove (6).

Images