An angle adjustment device for scaffold base and top support, and scaffold

Abstract

This utility model provides an angle adjustment device for a scaffold base and a top support, as well as a scaffold, for adjusting the angle between the base or top support and the slope. The angle adjustment device includes: a support rod with an adjustment hole penetrating through it at one end; a hollow limiting member with one end of the support rod extending into it; a through hole opposite to the adjustment hole on the opposite surface of the limiting member; and a connector passing through the through hole and the adjustment hole, wherein the diameter of the adjustment hole is larger than the diameter of the connector, so that the base or top support fixedly connected to one end of the limiting member is movably connected to the support rod. This utility model is directly applicable to slope construction environments, flexibly adjusting the angle of the base or top support to fit the slope without requiring additional construction work, thus improving construction efficiency.

Description

Technical Field

[0001] This utility model relates to the field of scaffolding technology, and in particular to an angle adjustment device for scaffolding base and top support, and a scaffolding. Background Technology

[0002] During the construction of the scaffold, it is necessary to ensure that all components in the support system remain horizontal and vertical, especially the uprights that bear the main force. It is necessary to ensure that the uprights are only subjected to vertical loads as much as possible. Therefore, during the scaffold erection process, the uprights must always remain vertical and not tilt.

[0003] like Figure 1 As shown, regardless of the type of support frame system (steel pipe, bowl-shaped, disc-lock, etc.) or external scaffolding system, the lower part of the upright 61 must be connected to the base 4 to form a whole. The threaded rod 12 and the base 4 are connected together by welding. During construction, it must be placed on a flat ground, completely in contact with the ground (structural surface), to ensure that the force of the frame system can be completely transmitted to the ground or foundation through the base 4. However, not all ground surfaces are completely level during scaffolding construction. There is a high probability that the ground is uneven or the structural layer has its own slope, which will cause the base 4 to not be completely in contact with the ground, affecting the stress of the scaffolding and bringing danger and unreliability to construction safety. In the existing technology, in construction sites with sloping surfaces 7, the ground is often treated to ensure flatness as much as possible, or wooden wedges 8, multiple thin steel bags, or sand are inserted between the sloping structural layer and the base to fill the gap between the base 4 and the ground (structural layer), ensuring that the base 4 is completely in contact with the ground, increasing the contact area with the ground, and making the stress more safe and guaranteed.

[0004] like Figure 2 As shown, inclined or sloping slabs are common in engineering construction. However, the support frame requires the frame to be horizontally and vertically aligned, and the uprights 61 must always be vertical. A wedge-shaped gap exists between the inclined or sloping slab and the top support, resulting in only one edge contact between the top support 5 and the lower support joist (slope 7). When the load is too large, the top support 5 will deform. The threaded rod 12 of the support frame and the U-shaped top support 5 are welded together, making it impossible to adjust the angle of the support surface. This prevents the top support 5 from fully fitting with the lower support joist of the inclined or sloping slab, affecting the scaffold's load-bearing capacity and posing a safety hazard. In existing technologies, wooden wedges 8 and multiple thin steel plates are often inserted between the lower support joist of the inclined or sloping slab and the top support surface during construction to fill the gap between the top support 5's steel plate and the inclined or sloping slab's support joist, ensuring complete contact and making the load-bearing capacity safer and more reliable.

[0005] However, regardless of whether it's a base or a top support, in construction scenarios involving slopes, wooden wedges or similar materials need to be inserted between the slope and the base or top support to fill the gap. As a result, existing bases and top supports cannot be directly applied to slope construction environments, cannot be flexibly adjusted to fit the slope, and increase construction work, costs, and efficiency.

[0006] Therefore, it is necessary to provide an angle adjustment device for the scaffold base and top support, as well as a scaffold, to solve the above-mentioned problems existing in the prior art. Utility Model Content

[0007] In view of the shortcomings of the prior art described above, the purpose of this utility model is to provide an angle adjustment device for scaffold base and top support, as well as scaffolding, to solve the technical problem that the base and top support in the prior art cannot be directly applied to the slope construction environment.

[0008] To solve the above-mentioned technical problems, this utility model provides an angle adjustment device for a scaffold base and a top support, and a scaffold, for adjusting the angle between the base or top support and the slope surface. The angle adjustment device includes:

[0009] A support rod, one end of which has an adjustment hole that passes through the support rod;

[0010] A hollowed-out limiting member, with one end of the support rod extending into the limiting member; a through hole opposite to the adjusting hole is provided on the opposite surface of the limiting member;

[0011] A connector is provided through the through hole and the adjustment hole, and the diameter of the adjustment hole is larger than the diameter of the connector, so that the base or top support fixedly connected to one end of the limiting member is movably connected to the support rod.

[0012] The angle adjustment device for the scaffold base and top support provided by this utility model has the following beneficial effects:

[0013] By setting an adjustment hole through the support rod at one end and a through hole on the opposite surface of the limiting member, one end of the support rod extends into the hollow limiting member. The adjustment hole and the through hole are aligned. The connector passes through the through hole and the adjustment hole, and the diameter of the adjustment hole is larger than the diameter of the connector. This allows the base or top support fixed to one end of the limiting member to be movably connected to the support rod. In construction scenarios with an inclined slope, because the diameter of the adjustment hole is larger than the diameter of the connector, the connector can move within the adjustment hole, and the connector connects the support rod and the limiting member. When connected together, the limiting component is movable relative to the support rod, and the base or top support is also movable relative to the support rod. This allows the base or top support to adjust its angle relative to the horizontal plane. The angle that adapts to the slope allows the base or top support to fit the slope. At this time, one side wall of the support rod abuts against the inner wall of the limiting component to limit the support rod. This method of adjusting the angle of the base or top support to adapt to the slope eliminates the need for caulking with wooden wedges or multiple thin steel bladders, reducing construction costs and improving construction efficiency.

[0014] Furthermore, the limiting member is a sleeve, the inner diameter of which is larger than the diameter of the support rod, so that the sleeve is fitted onto one end of the support rod.

[0015] Furthermore, one end of the sleeve is fixed to the top surface of the base.

[0016] Furthermore, one end of the sleeve is fixed to the bottom surface of the top support.

[0017] Furthermore, the connector includes a fastening bolt and a nut. One end of the fastening bolt passes through the through hole and the adjustment hole. The nut is fitted onto one end of the fastening bolt and is locked after the base or top support comes into contact with the slope.

[0018] Furthermore, the through hole is located in the middle of the sleeve, and the diameter of the through hole is adapted to the fastening bolt.

[0019] Furthermore, the support rod is a threaded screw, and the adjustment hole is provided 25 mm from the end of the screw.

[0020] Furthermore, the end of the lead screw with the adjustment hole extends into the sleeve and is a certain distance away from the base or the top support.

[0021] Furthermore, a screw nut is provided on the screw rod for adjusting the height of the scaffold.

[0022] To solve the above-mentioned technical problems, this utility model also provides a scaffold, including: the angle adjustment device of the scaffold base and the top support as described above.

[0023] The beneficial effects of the scaffolding provided by this utility model are similar to those of the angle adjustment device for the scaffolding base and top support described above. Attached Figure Description

[0024] Figure 1 This is a schematic diagram of a scaffold with its base placed on a slope in the prior art;

[0025] Figure 2 This is a schematic diagram of the structure of a scaffold with a top-supported inclined plate in the prior art;

[0026] Figure 3 This is a schematic diagram of the structure of the base and angle adjustment device installed according to an embodiment of the present utility model;

[0027] Figure 4 for Figure 3 Top view;

[0028] Figure 5 A schematic diagram of the installation of the top support and angle adjustment device according to an embodiment of this utility model;

[0029] Figure 6 for Figure 5 Top view;

[0030] Figure 7 This is a schematic diagram of the structure of the scaffold using the base according to an embodiment of the present utility model;

[0031] Figure 8 for Figure 7 Enlarged view of section A;

[0032] Figure 9 This is a schematic diagram of the structure of a scaffold using a top support according to an embodiment of the present utility model;

[0033] Figure 10 for Figure 9 Enlarged view of section B.

[0034] Component designation explanation

[0035] 1. Support rod; 11. Adjustment hole; 12. Lead screw; 121. Lead screw nut; 2. Limiting component; 21. Through hole; 22. Sleeve; 3. Connecting component; 31. Fastening bolt; 32. Nut; 4. Base; 5. Top support; 6. Bracket assembly; 61. Upright pole; 62. Crossbar; 63. Disc; 64. Pin; 7. Slope; 8. Wooden wedge. Detailed Implementation

[0036] The following specific embodiments illustrate the implementation of this utility model. Those skilled in the art can easily understand other advantages and effects of this utility model from the content disclosed in this specification.

[0037] It should be understood that the structures, proportions, sizes, etc., illustrated in the accompanying drawings are merely for illustrative purposes to aid those skilled in the art and are not intended to limit the implementation of this utility model. Therefore, they have no substantial technical significance. Any modifications to the structure, changes in proportions, or adjustments to size, without affecting the effectiveness and purpose of this utility model, should still fall within the scope of the technical content disclosed in this utility model. The following detailed description should not be considered restrictive, and the scope of the embodiments of this application is limited only by the claims of the published patents. The terminology used herein is for describing specific embodiments only and is not intended to limit this application. Spatial terms such as "upper," "lower," "left," "right," "below," "below," "lower part," "above," "upper part," etc., may be used in the text to illustrate the relationship between one element or feature shown in the figures and another element or feature.

[0038] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," "fixing," and "holding" 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; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0039] Furthermore, as used herein, the singular forms “a,” “an,” and “the” are intended to include the plural forms as well, unless the context indicates otherwise. It should be further understood that the terms “comprising,” “including,” indicate the presence of the stated feature, operation, element, component, item, kind, and / or group, but do not preclude the presence, occurrence, or addition of one or more other features, operations, elements, components, items, kinds, and / or groups. The terms “or” and “and / or” as used herein are interpreted as inclusive, or mean any one or any combination thereof. Thus, “A, B, or C” or “A, B, and / or C” means “any one of: A; B; C; A and B; A and C; B and C; A, B, and C.” Exceptions to this definition arise only when combinations of elements, functions, or operations are inherently mutually exclusive in some manner.

[0040] like Figures 3-10 As shown, an embodiment of this utility model provides an angle adjustment device for a scaffold base and a top support, used to adjust the angle between the base 4 or the top support 5 and the slope 7. The angle adjustment device includes: a support rod 1, a limiting member 2, and a connecting member 3.

[0041] One end of the support rod 1 has an adjustment hole 11 that passes through the support rod 1. The limiting member 2 is hollow, and one end of the support rod 1 extends into the limiting member 2. A through hole 21 opposite to the adjustment hole 11 is provided on the opposite surface of the limiting member 2. The connecting member 3 passes through the through hole 21 and the adjustment hole 11, and the diameter of the adjustment hole 11 is larger than the diameter of the connecting member 3, so that the base 4 or top support 5 fixedly connected to one end of the limiting member 2 is movably connected to the support rod 1.

[0042] By providing an adjustment hole 11 through one end of the support rod 1, and a through hole 21 on the opposite surface of the limiting member 2, one end of the support rod 1 extends into the hollow limiting member 2. The adjustment hole 11 and the through hole 21 are aligned. The connecting member 3 passes through the through hole 21 and the adjustment hole 11, and the diameter of the adjustment hole 11 is larger than the diameter of the connecting member 3. This allows the base 4 or top support 5, which is fixedly connected to one end of the limiting member 2, to be movably connected to the support rod 1. In construction scenarios with an inclined slope 7, because the diameter of the adjustment hole 11 is larger than the diameter of the connecting member 3, the connecting member 3 can move within the adjustment hole 11. 3. Connect the support rod 1 and the limiting member 2 together so that the limiting member 2 is in a movable state relative to the support rod 1. Then the base 4 or top support 5 is also in a movable state relative to the support rod 1, so that the base 4 or top support 5 can be adjusted at a certain angle relative to the horizontal plane. The angle of the adaptive slope 7 makes the base 4 or top support 5 fit the slope. At this time, one side wall of the support rod 1 abuts against the inner wall of the limiting member 2 to limit the support rod 1. This method of adjusting the angle of the base 4 or top support 5 to fit the slope 7 eliminates the need for construction work such as using wooden wedges and multiple thin steel ladles, reducing construction costs and improving construction efficiency.

[0043] like Figures 3-6 As shown, in some embodiments of this utility model, the limiting member 2 is a sleeve 22. The inner diameter of the sleeve 22 is larger than the diameter of the support rod 1, so that the sleeve 22 is fitted onto one end of the support rod 1. The support rod 1 can move within the sleeve 22. When the base 4 or top support 5 is in contact with the contact surface having an inclined angle, the position of the support rod 1 within the sleeve 22 is fixed, maintaining a vertical state, that is, one side wall of the support rod 1 abuts against the inner wall of the sleeve 22, thereby the sleeve 22 provides a limiting effect on the support rod 1. For example, the height of the sleeve 22 is 50mm, and its inner diameter is 1 to 2mm larger than the diameter of the support rod 1.

[0044] like Figure 3 and Figure 8As shown, in some embodiments of this utility model, one end of the sleeve 22 is fixed to the top surface of the base 4. Exemplarily, the sleeve 22 is welded to the center position of the top surface of the base 4. The movement of the sleeve 22 drives the movement of the base 4. When the base 4 adapts to the angle of the slope 7 and fits against the slope 7, it ensures that the support rod 1 is in a vertical state, thereby ensuring that the upright 61 is always in a vertical state and ensuring the stability of the entire scaffolding system.

[0045] like Figure 4 and Figure 10 As shown, in some embodiments of this utility model, one end of the sleeve 22 is fixed to the bottom surface of the top support 5. Exemplarily, the sleeve 22 is welded to the center position of the bottom surface of the top support 5. The movement of the sleeve 22 drives the movement of the top support 5. When the top support 5 fits the slope 7 at an angle, it ensures that the support rod 1 is in a vertical state, thereby ensuring that the upright 61 is always in a vertical state and ensuring the stability of the entire scaffolding system.

[0046] like Figure 5 , Figure 8 and Figure 10 As shown, in some embodiments of this utility model, the connecting member 3 includes a fastening bolt 31 and a nut 32. One end of the fastening bolt 31 passes through a through hole 21 and an adjustment hole 11. The nut 32 is fitted onto one end of the fastening bolt 31 and locked after the base 4 or top support 5 abuts against the slope 7. During installation, the fastening bolt 31 passes through the through hole 21 and the adjustment hole 11, and the nut 32 is fitted onto the fastening bolt 31, but it is not locked at this time. That is, the sleeve 22 and the base 4 or top support 5 are in a movable state relative to the support rod 1. In the construction environment of the slope 7, the base 4 or top support 5 can adapt to the angle of the slope 7. When the base 4 or top support 5 is in contact with the slope 7, it ensures that the support rod 1 is in a vertical state. Then, the nut is tightened to build a stable support system.

[0047] like Figure 3 and Figure 5 As shown, in some embodiments of this utility model, the through hole 21 is opened in the middle of the sleeve 22, and the diameter of the through hole 21 is adapted to the fastening bolt 31. By opening the through hole 21 in the middle of the sleeve 22 and adapting the diameter of the through hole 21 to the fastening bolt 31, the stability of the support structure is enhanced while ensuring that the base 4 or the top support 5 can adjust its angle.

[0048] like Figure 3 and Figure 5 As shown, in some embodiments of this utility model, the support rod 1 is a threaded screw 12, and an adjustment hole 11 is provided 25 mm from the end of the screw 12. Exemplarily, the length of the screw 12 is 500 mm to 600 mm.

[0049] like Figure 3 and Figure 5 As shown, in some embodiments of this utility model, one end of the lead screw 12 with an adjustment hole 11 extends into the sleeve 22 and is a certain distance away from the base 4 or the top support 5. To ensure that the lead screw 12 is movably connected to the base 4 or the top support 5, the lead screw 12 is a certain distance away from the top surface of the base 4 or the bottom surface of the top support 5, and the adjustment hole 11 is located on the rod at a distance of 25mm from the end, ensuring that the fastening bolt 31 can move within the adjustment hole 11 of the lead screw 12, thereby driving the sleeve 22 and the base 4 or the top support 5 to move. For example, one end of the lead screw 12 is about 5mm away from the top surface of the base 4 or the bottom surface of the top support 5.

[0050] like Figure 3 and Figure 5 As shown, in some embodiments of this utility model, a screw nut 121 is provided on the screw rod 12 for adjusting the height of the scaffold. By providing a screw nut 121 on the screw rod 12, the height of the screw rod 12 can be adjusted, thereby adapting to support systems of different heights. By tightening the screw nut 121, the screw rod 12 can vertically install the upright 61 onto the base 4 or the top support 5, thereby providing stable support for the scaffold.

[0051] like Figure 3 and Figure 4 As shown, in some specific embodiments, the base 4 is a steel plate with dimensions of 150mm × 150mm × 6mm (length × width × thickness). During the use of the scaffolding, the base 4 needs to bear the weight transmitted from the uprights 61 and other components. Using a steel plate as the base 4 can ensure that it can withstand a large load and enhance the stability of the entire scaffolding structure.

[0052] like Figure 5 and Figure 6 As shown, in some specific embodiments, the top support 5 is a U-shaped steel plate, which can bear the load from the construction platform, construction personnel, materials and equipment, and transfer it to the uprights 61 of the scaffold and the foundation structure to enhance the stability of the entire scaffold structure.

[0053] like Figures 7-10 As shown, an embodiment of this utility model also provides a scaffold, including: the aforementioned scaffold base and the angle adjustment device for the top support.

[0054] like Figure 7 and Figure 9As shown, in some embodiments of this utility model, the scaffolding further includes a support assembly 6, which includes uprights 61, horizontal bars 62, discs 63, and pins 64. When assembling and installing the uprights 61 and horizontal bars 62, the discs 63 are fitted onto the corresponding positions of the uprights 61, the fastener heads of the horizontal bars 62 are clamped onto the discs 63, and the pins 64 are passed through the corresponding holes in the fastener heads of the horizontal bars 62 and the holes in the discs 63, thereby fixing the uprights 61 and horizontal bars 62 together.

[0055] like Figure 7 and Figure 8 As shown, in a construction environment where the ground has an inclined angle forming a slope 7, the angle adjustment device can adapt to various types of ground surfaces. During scaffolding construction, the movable base 4 can automatically conform to the ground according to the flatness and slope of the ground, thereby ensuring that the threaded rod 12 and upright 61 supported on the base 4 remain vertical, ensuring that the load on them is transmitted to the ground through the base 4, ensuring the uniformity and reliability of the scaffolding's force, and better solving the problem of the base 4 not conforming to the uneven ground. For example, the installation steps of this embodiment are as follows: First, weld the base 4 and the sleeve 22 together. Insert the lead screw 12 into the sleeve 22 but do not contact the top surface of the base 4, for example, about 5mm away from the top surface of the base 4. Use a fastening bolt 31 to pass through the through hole 21 of the sleeve 22 and the adjustment hole 11 of the lead screw 12, and put on the nut 32 to ensure that the base 4 can move freely. Then, according to the laying position, place the angle adjustment device on the ground control point. The freely moving base 4 can adapt to the slope of the ground and fit against the ground. Tighten the nut 32 (but still with a margin). Fine-tune the verticality of the lead screw 12 to ensure that the lead screw 12 is in a vertical state. Install the upright 61 on the lead screw 12 to ensure that the upright 61 is in a vertical state. After installing the upright 61, adjust the horizontality of the horizontal bar 62. Use the cooperation of the disc 63 and the pin 64 to install the horizontal bar 62 and the upright 61 to form an integral scaffold.

[0056] like Figure 9 and Figure 10As shown, in a construction environment where a slope 7 is formed by inclined plates and sloping plate under-support joists, during scaffolding construction, the freely movable top support 5 automatically fits into the inclined plates and sloping plate under-support joists according to the slope of the inclined plates and sloping plate, thereby ensuring the safety and reliability of the scaffolding system under stress and better solving the problem of non-fitting between the support surface of the top support 5 and the inclined plates and sloping plate under-support joists. For example, the installation steps of this embodiment are as follows: The top support 5 and the sleeve 22 are welded together. The screw rod 12 is inserted into the sleeve 22 but does not contact the bottom surface of the top support 5, for example, about 5mm away from the bottom surface of the top support 5. The fastening bolt 31 is passed through the through hole 21 of the sleeve 22 and the adjustment hole 11 of the screw rod 12. The nut 32 is fitted to ensure that the top support 5 can move freely. Then the screw rod 12 is placed on the top of the upright 61 to ensure that the top support 5 is in contact with the inclined plate and the lower support keel of the slope plate. The nut 32 is locked (but there is still a margin). The verticality of the screw rod 12 is finely adjusted to ensure that the screw rod 12 and the upright 61 are in a vertical state. Finally, the lower support keel is arranged as required to form an overall scaffold.

[0057] In summary, addressing the issue that existing technologies where the lead rod is directly welded to the base or top support, making it unsuitable for slope applications, this invention provides an angle adjustment device for the scaffold base and top support, as well as a scaffold. This is achieved by providing an adjustment hole 11 penetrating one end of the support rod 1, and a through hole 21 on the opposite surface of the limiting member 2. One end of the support rod 1 extends into the hollow limiting member 2, with the adjustment hole 11 and through hole 21 aligned. A connecting member 3 passes through both the through hole 21 and the adjustment hole 11, with the diameter of the adjustment hole 11 being larger than the diameter of the connecting member 3. This allows the base 4 or top support 5, fixedly connected to one end of the limiting member 2, to be movably connected to the support rod 1. In construction scenarios on slopes 7 with an incline, because the diameter of the adjustment hole 11 is larger than the diameter of the connecting member 3, the connecting member 3 can... The support rod 1 and the limiting member 2 are connected by the connecting member 3, allowing the limiting member 2 to be movable relative to the support rod 1. This means the base 4 or top support 5 is also movable relative to the support rod 1, allowing it to adjust its angle relative to the horizontal plane. The angle of the adaptive slope 7 allows the base 4 or top support 5 to conform to the slope. At this point, one side wall of the support rod 1 abuts against the inner wall of the limiting member 2, thus limiting the support rod 1. This method of adjusting the angle of the base 4 or top support 5 to fit the slope better solves the problem of the base 4 or top support 5 not being able to directly conform to the slope 7. Furthermore, it eliminates the need for caulking with wooden wedges or multiple thin steel slabs, reducing construction steps, lowering costs, and improving efficiency. Therefore, this invention effectively overcomes the various shortcomings of existing technologies and has high industrial application value.

[0058] The above embodiments are merely illustrative of the principles and effects of this utility model and are not intended to limit the scope of this utility model. Any person skilled in the art can modify or alter the above embodiments without departing from the spirit and scope of this utility model. Therefore, all equivalent modifications or alterations made by those skilled in the art without departing from the spirit and technical concept disclosed in this utility model should still be covered by the claims of this utility model.

Claims

1. An angle adjustment device for a scaffold base and a top support, used to adjust the angle between the base or top support and the slope surface, characterized in that, The angle adjustment device includes: A support rod (1) has an adjustment hole (11) through which it passes through one end; A hollowed-out limiting member (2) has one end of the support rod (1) extending into the limiting member (2); a through hole (21) opposite to the adjustment hole (11) is provided on the opposite surface of the limiting member (2); A connector (3) is provided through the through hole (21) and the adjustment hole (11), and the diameter of the adjustment hole (11) is larger than the diameter of the connector (3) so that the base (4) or top support (5) fixedly connected to one end of the limiting member (2) is movably connected to the support rod (1).

2. The angle adjustment device for the scaffold base and top support according to claim 1, characterized in that, The limiting member (2) is a sleeve (22), the inner diameter of which is larger than the diameter of the support rod (1), so that the sleeve (22) is fitted onto one end of the support rod (1).

3. The angle adjustment device for the scaffold base and top support according to claim 2, characterized in that, One end of the sleeve (22) is fixed to the top surface of the base (4).

4. The angle adjustment device for the scaffold base and top support according to claim 2, characterized in that, One end of the sleeve (22) is fixed to the bottom surface of the top support (5).

5. The angle adjustment device for the scaffold base and top support according to claim 2, characterized in that, The connector (3) includes a fastening bolt (31) and a nut (32). One end of the fastening bolt (31) passes through the through hole (21) and the adjusting hole (11). The nut (32) is sleeved on one end of the fastening bolt (31). The base (4) or top support (5) is locked after it comes into contact with the slope (7).

6. The angle adjustment device for the scaffold base and top support according to claim 5, characterized in that, The through hole (21) is located in the middle of the sleeve (22), and the diameter of the through hole (21) is adapted to the fastening bolt (31).

7. The angle adjustment device for the scaffold base and top support according to claim 2, characterized in that, The support rod (1) is a threaded screw (12), and the adjustment hole (11) is provided 25 mm from the end of the screw (12).

8. The angle adjustment device for the scaffold base and top support according to claim 7, characterized in that, The end of the lead screw (12) with the adjustment hole (11) extends into the sleeve (22) and is a certain distance away from the base (4) or the top support (5).

9. The angle adjustment device for the scaffold base and top support according to claim 7, characterized in that, The lead screw (12) is provided with a lead screw nut (121) for adjusting the height of the scaffold.

10. A type of scaffolding, characterized in that, include: The angle adjustment device for the scaffold base and top support as described in any one of claims 1 to 9.

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