Angle-adjustable bottom support

Abstract

The invention relates to the technical field of constructional engineering, and particularly discloses an angle-adjustable bottom support. The bottom support comprises a base steel plate, a supporting seat fixed on the base steel plate, a supporting shaft rotatably supported on the supporting seat, a hollow threaded rod fixedly arranged in the middle of the supporting shaft in a penetrating mode, a rotating piece fixed on the side face of the supporting shaft, an angle locking assembly composed of a bolt and a nut, and a bottom support plate connected to the hollow threaded rod in a threaded mode. An arc-shaped sliding groove is formed in the supporting base, a bolt penetrates through the rotating piece and the arc-shaped sliding groove and is matched with a nut, and the supporting shaft, the hollow threaded rod fixed to the supporting shaft and the bottom supporting plate can be locked at the needed angle. A round groove used for containing a steel pipe is formed in the bottom supporting plate, and the supporting height of the bottom supporting plate can be adjusted by rotating the bottom supporting plate. The device is reasonable in structure, low in cost and convenient to install and use, can effectively adapt to a slope foundation, enables a scaffold vertical rod to be evenly stressed, eliminates potential safety hazards caused by a traditional wooden wedge leveling mode, and can be used in cooperation with an existing steel pipe support.

Description

Technical Field

[0001] This invention relates to the field of construction equipment technology, specifically to an adjustable angle base. Background Technology

[0002] In the construction industry, scaffolding is widely used as a temporary support system in concrete pouring, masonry construction, decoration and renovation, and equipment installation. The stability and safety of the scaffolding system are directly related to construction quality and personnel safety, and the support conditions at the base of the uprights are one of the key factors affecting overall stability. Traditional scaffolding bases mostly use a fixed structure with horizontally set bottom support plates, suitable for flat and solid foundation conditions. However, in actual construction, construction sites often have natural slopes, structural shape variations, or local unevenness, causing the base of the uprights to not make full contact with the foundation surface, resulting in eccentric stress or point contact, which seriously affects the overall stability and safe load-bearing capacity of the scaffolding.

[0003] Currently, a common practice in scaffolding erection on slopes or uneven foundations is to place wooden wedges or steel plates under the base to adjust the support surface to a horizontal state. However, wooden wedges, due to their low strength and susceptibility to compression deformation, have an angle that is difficult to precisely match with the foundation slope, resulting in a significant reduction in the actual contact area of ​​the base and causing localized stress concentration. Furthermore, wooden wedges are prone to slippage, crushing, or decay under long-term or dynamic loads, leading to changes in support height and consequently uneven settlement or tilting of the scaffolding, posing significant safety hazards. This adjustment method is not only inaccurate and unreliable, but also results in high material waste and low reusability, failing to meet the requirements of modern construction for the reliability, economy, and adaptability of support systems.

[0004] In recent years, to overcome the shortcomings of traditional wooden wedge adjustment methods, several adjustable base support structures have emerged in this field. For example, threaded rod height adjustment mechanisms can achieve fine-tuning of the vertical height of the uprights. However, most of these structures can only achieve linear adjustment in the vertical direction and cannot adapt to changes in the inclination angle of the foundation surface. Under sloping conditions, it is still difficult to ensure uniform force distribution between the base support plate and the uprights. A few other structures with angle adjustment functions have been proposed, such as those using ball joint connections or multi-axis adjustment mechanisms. However, these structures often suffer from limited adjustment range, insufficient locking reliability, complex construction, high manufacturing costs, or cumbersome on-site operation, making it difficult to promote their large-scale use in practical engineering.

[0005] Therefore, there is an urgent need in this field for an adjustable angle base that is structurally sound, easy to adjust, highly applicable, and safe and reliable, in order to solve the problem of support compatibility when erecting scaffolding on slopes and uneven foundations, and to make up for the shortcomings of existing technologies. Summary of the Invention

[0006] In view of the shortcomings of the existing technology, the purpose of this invention is to provide an adjustable angle base support, which can adapt to foundation conditions with different slopes, realize flexible and reliable adjustment of the base support plate angle, and ensure uniform stress on the scaffolding uprights and overall system stability.

[0007] Based on a first key aspect of the present invention, an adjustable angle base is provided, comprising:

[0008] The base is a steel plate with multiple mounting holes.

[0009] A support base is fixedly mounted on the base steel plate, and the support base has a round hole and an arc-shaped sliding groove.

[0010] The support shaft has its two ends rotatably supported in the circular holes of the support base;

[0011] A hollow threaded rod is fixedly inserted through the middle of the support shaft and is fixedly connected to the support shaft;

[0012] A rotating plate is fixedly disposed on the side of the support shaft and adjacent to the inner wall of the support base, and a connecting hole is provided on the rotating plate;

[0013] An angle locking assembly includes a bolt and a nut, wherein the bolt passes sequentially through a connecting hole on the rotating plate and an arc-shaped groove on the support base and engages with the nut to lock the support shaft at the desired angle;

[0014] The base plate has internal threads and is threadedly connected to the hollow threaded rod.

[0015] In some embodiments, as a further preferred embodiment, fan-shaped baffles are fixedly provided on the outer surfaces of both ends of the support shaft to restrict the movement of the support shaft along its axial direction.

[0016] In some embodiments, as a further preferred option, the support is welded and fixed to the base steel plate.

[0017] In some embodiments, as a further preferred embodiment, the mounting holes on the base steel plate are multiple and located at the edge of the base steel plate. The distance between the center of the mounting hole and the corresponding edge of the steel plate is 20mm. The base steel plate is fixedly connected to the external foundation by using expansion bolts through the mounting holes.

[0018] In some embodiments, as a further preferred embodiment, the upper surface of the base plate is provided with at least one circular groove for accommodating the steel pipe, and the circular groove on the base plate includes two specifications with diameters of 48.3 mm and 41.1 mm respectively, and the groove depth is 2 mm.

[0019] In some embodiments, as a further preferred embodiment, the support base is a fan-shaped plate with a central angle of 90° and a thickness of 5mm; the diameter of the circular hole is 39mm, and the width of the arc-shaped groove is 10mm.

[0020] In some embodiments, as a further preferred option, the hollow threaded rod has a wall thickness of 3mm and an external thread size of M36×1.5; the support shaft has a diameter of 38mm.

[0021] In some embodiments, as a further preferred option, the bolts and nuts are M10×1.5.

[0022] Based on a second key aspect of the invention, a scaffolding system is provided, comprising scaffolding uprights and a plurality of base supports, at least one of the base supports being an adjustable angle base support.

[0023] Based on a third key aspect of the invention, a method for adjusting the angle of a scaffold base support is provided, using an adjustable angle base support as described above, the method comprising the following steps:

[0024] Loosen the angle locking assembly so that the support shaft can drive the hollow threaded rod and the bottom plate to rotate together around the axis of the support shaft until the upper surface of the bottom plate reaches the desired angle that is compatible with the target slope.

[0025] Tighten the angle locking assembly to lock the support shaft at the desired angle, thereby fixing the tilt posture of the base plate;

[0026] Rotating the base plate, utilizing its threaded engagement with the hollow threaded rod, drives the base plate to move axially along the hollow threaded rod, thereby adjusting the support height of the base plate. Beneficial effects:

[0027] Compared with the prior art, the present invention has the following significant advantages:

[0028] (1) By cooperating with the support shaft, rotating plate and arc-shaped sliding groove on the support seat, the bottom support plate can be infinitely adjusted around the horizontal axis, which can accurately adapt to foundations with different slopes, ensure that the bottom support plate is in full contact with the sloping foundation, and distribute the force evenly, effectively avoiding the risk of frame instability caused by point contact or eccentric force.

[0029] (2) The hollow threaded rod is used in conjunction with the base plate with internal thread. After the angle is adjusted, the height can be adjusted independently. The operation is simple and the adjustment accuracy is high. At the same time, the threaded structure has good self-locking performance and can reliably maintain the support height.

[0030] (3) The overall structure is reasonably designed, with few parts and simple construction. It mainly uses conventional steel and standard parts, resulting in low manufacturing cost and durability. At the same time, no special tools are required for installation and adjustment, making construction convenient and easy to promote and apply on a large scale on site.

[0031] (4) The support shaft is axially limited by the fan-shaped baffle and the rotation angle is rigidly locked by the bolts and nuts, which ensures the integrity of the structure and the reliability of the load after adjustment and eliminates the potential for loosening or slippage during use.

[0032] (5) It has good compatibility with existing types of steel pipe supports and can directly replace conventional base supports. It is especially suitable for scaffolding erection under complex working conditions such as slopes and uneven ground, which significantly improves the adaptability and safety level of the scaffolding system. Attached Figure Description

[0033] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0034] Figure 1 This is a schematic diagram of the overall structure of an embodiment of the present invention.

[0035] Figure 2 for Figure 1 Top view.

[0036] Explanation of reference numerals in the attached figures:

[0037] 100-Base steel plate; 110-Mounting hole; 200-Support seat; 210-Arc-shaped slide groove; 300-Hollow threaded rod; 400-Support shaft; 410-Rotating plate; 420-Fan-shaped baffle; 500-Bolt; 600-Nut; 700-Bottom plate; 710-Circular groove. Detailed Implementation

[0038] To make the objectives, technical solutions, and advantages of this invention clearer, the technical solutions of this invention will be described in detail below. Obviously, the described embodiments are merely some embodiments of this invention, and not all embodiments. Based on the embodiments of this invention, all other implementation methods obtained by those skilled in the art without creative effort are within the scope of protection of this invention.

[0039] Example:

[0040] like Figure 1 and Figure 2As shown, this invention provides an adjustable angle base support, comprising a base steel plate 100, a support seat 200, a hollow threaded rod 300, a support shaft 400, bolts 500, nuts 600, and a base plate 700. This adjustable angle base support is suitable for applications such as building scaffolding, formwork supports, and temporary stage trusses where support systems need to be erected on slopes or uneven foundations. The structure, connection relationships, and functions of each component will be described in detail below with reference to the accompanying drawings.

[0041] In this embodiment, the base steel plate 100 serves as the base of the entire support, transferring the upper load to the foundation and providing a stable mounting surface. Preferably, it is made of a steel plate with dimensions of 150mm × 150mm and a thickness of 6mm to ensure sufficient support rigidity and stability. At each of the four corners of the base steel plate 100, there is a mounting hole 110 with a diameter of 14mm. The center of each mounting hole 110 is 20mm from the corresponding edge of the steel plate. These mounting holes 110 are used to insert expansion bolts, thereby firmly fixing the entire support to the concrete foundation or other solid surface.

[0042] The support base 200 is preferably made of a sector-shaped steel plate with a central angle of 90° and a thickness of 5mm. It is fixed to the upper surface of the base steel plate 100 by welding. The support base 200 has a circular hole and an arc-shaped sliding groove 210. The diameter of the circular hole is 39mm, which is used to support the end of the support shaft 400; the width of the arc-shaped sliding groove 210 is 10mm, and its arc trajectory corresponds to the rotation range of the support shaft 400, providing a guiding and locking path for its angle adjustment.

[0043] The support shaft 400 is preferably a solid round steel with a diameter of 38mm. Its two ends are respectively inserted into and supported in the round holes of the two support seats 200, so that the support shaft 400 can rotate around its own axis. However, there is an axial clearance. In order to eliminate the axial clearance and ensure that the support shaft 400 can only rotate and not move axially, a fan-shaped baffle 420 is fixedly provided on the outer side of both ends of the support shaft 400. The fan-shaped baffle 420 is welded to the end face of the support shaft 400 and coincides with the outer wall surface of the support seat 200, restricting the axial movement of the support shaft 400 and ensuring that the support shaft 400 can only rotate and will not come out.

[0044] The hollow threaded rod 300 is preferably made of steel pipe with a wall thickness of 3mm, and its outer surface is machined with M36×1.5 threads to mate with the internal threads of the base plate 700. The hollow threaded rod 300 is connected through the middle of the support shaft 400 to form a rigid component similar to a "T" shape, and the hollow threaded rod 300 rotates together with the support shaft 400.

[0045] Rotating plates 410 are welded to both sides of the support shaft 400, near the inner wall of the support base 200. Connecting holes are machined on the rotating plates 410. The angle locking assembly includes bolts 500 and nuts 600, preferably M10×1.5. During assembly, the bolts 500 are passed sequentially through the connecting holes on the rotating plates 410 and the arc-shaped grooves 210 on the support base 200, and then the nuts 600 are tightened. When the angle needs to be adjusted, the nuts 600 are loosened, allowing the support shaft 400 to rotate together with the rotating plates 410. The connecting holes on the rotating plates 410 move relative to the arc-shaped grooves 210 on the support base 200. When the desired angle is reached (i.e., the angle at which the upper surface of the base plate 700 contacts the foundation slope), the nuts 600 are tightened. The clamping force of the bolts 500 and the nuts 600 presses the rotating plates 410 and the support base 200 together, thus reliably locking the angle of the support shaft 400 and the hollow threaded rod 300 connected to it.

[0046] During the assembly of the support shaft 400, a specific sequence is followed to ensure its function: First, the support shaft 400, with the hollow threaded rod 300 already welded, is placed as a whole in a predetermined position on the base steel plate 100. Then, two support seats 200 are respectively fitted onto the ends of the support shaft 400 from both sides, and their positions are adjusted so that their circular holes mate with the two ends of the support shaft 400. Subsequently, the base plate of the support seat 200 is welded and fixed to the base steel plate 100. At this point, the support shaft 400 can rotate within the circular holes of the support seat 200, but there is a risk of a small range of axial translation. To eliminate the degree of freedom of axial translation and ensure that the support shaft 400 can only rotate, fan-shaped baffles 420 are welded to both end faces of the support shaft 400. The outer diameter of the fan-shaped baffle 420 is larger than the diameter of the circular hole on the support seat 200, thereby forming an effective axial limit.

[0047] The base plate 700 has an internally threaded hole machined at its center. This internal thread matches the M36×1.5 external thread on the hollow threaded rod 300, allowing the base plate 700 to be screwed onto the hollow threaded rod 300. By rotating the base plate 700, it can be raised and lowered along the axis of the hollow threaded rod 300, thereby achieving fine adjustment of the support height. The top surface of the base plate 700 (i.e., the surface in contact with the scaffolding uprights) is engraved with a circular groove 710. In this embodiment, the circular groove 710 includes two specifications: a diameter of 48.3 mm and a diameter of 41.1 mm, both with a groove depth of 2 mm, used to respectively accommodate and limit two common specifications of scaffolding steel pipes on the market, preventing the steel pipes from slipping off.

[0048] The working principle and usage process of this invention are as follows:

[0049] When installing scaffolding on a sloping foundation, first, fix the base steel plate 100 to the foundation using expansion bolts. Then, determine the target angle to be adjusted for the base plate 700 based on the slope of the foundation. Loosen the nuts 600 on both sides, at which point the support shaft 400 can drive the hollow threaded rod 300 and the base plate 700 to rotate together. By observing the fit between the upper surface of the base plate 700 and the slope of the foundation, stop rotating when the upper surface of the base plate 700 is basically parallel to the slope of the foundation, tighten the nuts 600, and complete the angle locking. After angle adjustment and locking, adjust the height. Rotate the base plate 700, using the threaded drive to raise or lower it on the hollow threaded rod 300 until the scaffolding uprights reach the design elevation. Place the scaffolding uprights into the corresponding circular grooves 710 of the base plate 700, thus completing the entire installation process.

[0050] Through the above-mentioned structural design, this invention achieves flexible adjustment of the base plate angle and precise control of the height, effectively solving the problem of scaffolding erection on sloping foundations and ensuring the safety and stability of the scaffolding system.

[0051] It should be understood that the various forms of processes shown above can be used to rearrange, add, or delete steps. For example, the steps described in this disclosure can be executed in parallel, sequentially, or in different orders, as long as the desired result of the technical solution disclosed in this disclosure can be achieved, and this is not limited herein.

[0052] The specific embodiments described above do not constitute a limitation on the scope of protection of this disclosure. Those skilled in the art should understand that various modifications, combinations, sub-combinations, and substitutions can be made according to design requirements and other factors. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this disclosure should be included within the scope of protection of this disclosure.

Claims

1. An adjustable angle base, characterized in that, include: The base steel plate (100) has multiple mounting holes (110) on it; A support base (200) is fixedly mounted on the base steel plate (100), and the support base (200) has a round hole and an arc-shaped groove (210). The support shaft (400) is rotatably supported at both ends in the circular holes of the support base (200); A hollow threaded rod (300) is fixedly inserted through the support shaft and connected to the support shaft (400); A rotating plate (410) is fixedly disposed on the side of the support shaft (400) and adjacent to the inner wall of the support base (200). A connecting hole is provided on the rotating plate (410). An angle locking assembly includes a bolt (500) and a nut (600), the bolt (500) passing sequentially through a connecting hole on the rotating plate (410) and an arc-shaped groove (210) on the support base (200) and engaging with the nut (600) to lock the support shaft (400) at the desired angle; The base plate (700) is provided with internal threads and is threadedly connected to the hollow threaded rod (300).

2. The adjustable angle base according to claim 1, characterized in that, The outer sides of both ends of the support shaft (400) are also fixedly provided with fan-shaped baffles (420) to restrict the movement of the support shaft (400) along its axial direction.

3. The adjustable angle base according to claim 1, characterized in that, The support base is welded and fixed to the base steel plate.

4. The adjustable angle base according to claim 1, characterized in that, The base steel plate (100) has four mounting holes, which are located at the edge of the base steel plate. The center of the mounting hole is 20mm away from the corresponding edge of the steel plate. The base steel plate (100) is fixedly connected to the external foundation by using expansion bolts through the mounting holes.

5. The adjustable angle base according to claim 1, characterized in that, The upper surface of the base plate (700) is provided with at least one circular groove (710) for accommodating the steel pipe. The circular groove (710) on the base plate (700) includes two specifications with diameters of 48.3 mm and 41.1 mm respectively, and the groove depth is 2 mm.

6. The adjustable angle base according to claim 1, characterized in that, The support base (200) is a fan-shaped plate with a central angle of 90° and a thickness of 5mm; the diameter of the circular hole is 39mm, and the width of the arc-shaped groove (210) is 10mm.

7. The adjustable angle base according to claim 1, characterized in that, The hollow threaded rod (300) has a wall thickness of 3mm and its external thread size is M36×1.5; the support shaft (400) has a diameter of 38mm.

8. The adjustable angle base according to claim 1, characterized in that, The bolt (500) and nut (600) are M10×1.

5.

9. A scaffolding system, comprising scaffolding uprights and multiple base supports, characterized in that, At least one of the base supports is an adjustable angle base support according to any one of claims 1 to 8.

10. A method for adjusting the angle of a scaffold base support, using an adjustable angle base support as described in any one of claims 1 to 8, characterized in that, The method includes the following steps: Loosen the angle locking assembly so that the support shaft (400) can drive the hollow threaded rod (300) and the bottom plate (700) to rotate together around the axis of the support shaft (400) until the upper surface of the bottom plate (700) reaches the desired angle that is compatible with the target slope. Tighten the angle locking assembly to lock the support shaft (400) at the desired angle, thereby fixing the tilt posture of the base plate (700); Rotate the base plate (700) and use its threaded engagement with the hollow threaded rod (300) to drive the base plate (700) to move axially along the hollow threaded rod (300) and adjust the support height of the base plate (700).

Images