An adjustable screw base for steel scaffolding

Abstract

This utility model provides an adjustable screw base for steel scaffolding, aiming to solve the problem that existing scaffolding bases cannot adapt to changes in ground angle, resulting in uneven stress on the uprights and posing safety hazards. This utility model mainly includes a base plate, a ball-and-socket recess, a sleeve, a limiting flange, a threaded pipe, a top plate, a ball-and-socket boss, and a handle. Through the base structure and adjustment method provided by this utility model, when the ground tilts, the ball-and-socket joint can automatically deflect. The spherical fit structure of the ball-and-socket recess and the ball-and-socket boss allows the threaded pipe to adaptively deflect within a range of ±15°, keeping the top plate always horizontal, eliminating the need for manual leveling of the foundation, and ensuring the vertical force on the scaffolding uprights. The limiting flange restricts the axial disengagement of the threaded pipe through a groove, while allowing it to rotate and deflect freely, ensuring that the lifting adjustment and angle adaptive functions do not interfere with each other.

Description

Technical Field

[0001] This utility model relates to the field of scaffolding technology, and in particular to an adjustable screw base for steel scaffolding. Background Technology

[0002] Traditional scaffolding bases typically use fixed base plates and screw rod structures. When the ground is uneven or tilted, shims or manual adjustments are needed to keep the uprights vertical, resulting in low adjustment efficiency, poor stability, and a tendency to tip over. While existing adjustable bases can adjust the height, they cannot adapt to changes in ground angle, leading to uneven stress on the uprights and posing safety hazards. Utility Model Content

[0003] This application addresses the shortcomings of the prior art by providing an adjustable screw base for steel scaffolding that can automatically conform to different ground angles and maintain the verticality of the uprights.

[0004] The technical solution adopted in this utility model is as follows:

[0005] An adjustable screw base for steel scaffolding includes a base plate set on the ground, a sleeve vertically installed at the central axis of the base plate, a threaded tube provided in the inner cavity of the sleeve along the central axis, a top plate threadedly connected to the upper part of the threaded tube, a ball socket recess provided at the central axis of the base plate, a ball socket boss provided above the ball socket recess, the threaded tube sitting upright on the ball socket boss, and a handle passing through the lower part of the threaded tube.

[0006] Furthermore, the bottom of the spherical recess is flat, its cross-section is disc-shaped, and its upper surface is a concave spherical recess structure. The spherical recess protrusion consists of two small cylinders and a large cylinder combined together, with the bottom of the lower large cylinder having a protruding spherical recess structure.

[0007] Furthermore, a limiting flange is provided on the annular portion of the upper cut-off end face of the sleeve, and a groove is provided at the corresponding position of the threaded pipe. The body of the limiting flange is sleeved on the top outer ring of the sleeve, and its horizontal end cap portion is fitted into the groove.

[0008] Furthermore, multiple mounting holes are provided along the annular end face of the sleeve, and the limiting flange is fixed to the outer wall of the sleeve by fasteners.

[0009] Furthermore, the top plate and bottom plate are each provided with multiple sets of reinforcing ribs corresponding to their main body parts.

[0010] The advantages of this utility model over the prior art are as follows:

[0011] Adaptive ground angle: The spherical mating structure of the ball socket recess and ball socket convex seat allows the threaded pipe to adaptively deflect within a range of ±15°, keeping the top plate always level and eliminating the need for manual leveling of the foundation.

[0012] Integrated anti-loosening and locking: The limit flange restricts the axial disengagement of the threaded pipe through the groove, while allowing it to rotate and deflect freely, ensuring that the lifting adjustment and angle self-adaptive functions do not interfere with each other. Attached Figure Description

[0013] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0014] Figure 2 This is a schematic diagram of the internal structure of this utility model.

[0015] The components are: 1. base plate; 11. ball socket recess; 2. sleeve; 21. limiting flange; 22. fastener; 3. threaded pipe; 31. groove; 4. top plate; 5. ball socket boss; 51. large cylinder; 52. small cylinder; 6. handle; 7. reinforcing rib. Detailed Implementation

[0016] The specific embodiments of this utility model are described below with reference to the accompanying drawings.

[0017] This utility model provides an adjustable screw base for steel scaffolding, which aims to solve the problem that existing scaffolding bases cannot adapt to changes in ground angle, resulting in uneven stress on the uprights and potential safety hazards.

[0018] like Figures 1 to 2 As shown, this utility model includes a base plate 1 set on the ground, a sleeve 2 vertically installed at the central axis of the base plate 1, a threaded tube 3 provided in the inner cavity of the sleeve 2 along the central axis, a top plate 4 threadedly connected to the upper part of the threaded tube 3, a ball socket recess 11 provided at the central axis of the base plate 1, a ball socket protrusion 5 provided above the ball socket recess 11, the threaded tube 3 sitting upright on the ball socket protrusion 5, and a handle 6 penetrating through the lower part of the threaded tube 3.

[0019] In one embodiment of this utility model, the bottom of the ball socket recess 11 is flat, its cross-section is disc-shaped, and its upper surface is a concave ball socket structure. The ball socket protrusion 5 consists of two small cylinders 52 and a large cylinder 51 combined together, and the bottom of the lower large cylinder 51 is a protruding ball socket structure.

[0020] In one embodiment of this utility model, a limiting flange 21 is provided on the annular portion of the upper cut-off end face of the sleeve 2, and a groove 31 is provided at the corresponding position of the threaded pipe 3. The body of the limiting flange 21 is sleeved on the top outer ring of the sleeve 2, and its horizontal end cap portion is fitted into the groove 31.

[0021] In one embodiment of this utility model, a plurality of mounting holes are provided along the annular end face of the sleeve 2, and the limiting flange 21 is fixed to the outer wall of the sleeve 2 by fasteners 22.

[0022] In one embodiment of this utility model, the top plate 4 and the bottom plate 1 are each provided with multiple sets of reinforcing ribs 7 corresponding to their main body parts.

[0023] The specific structure and working principle of this utility model are as follows:

[0024] In a preferred embodiment, the present invention provides an adjustable screw base for steel scaffolding, comprising a base plate 1, a sleeve 2, a threaded pipe 3, and a top plate 4.

[0025] The base plate 1 is set on the ground, and a ball-and-socket recess 11 is provided on its central axis. Its bottom is a flat-bottomed disc and its upper surface is a concave ball-and-socket structure.

[0026] The ball socket convex seat 5 is composed of a lower large cylinder 51 and an upper small cylinder 52. The bottom of the large cylinder 51 is a convex spherical surface, which dynamically fits into the ball socket concave seat 11.

[0027] The threaded tube 3 is vertically mounted on the ball socket 5, with a handle 6 passing through its lower part and threadedly connected to the top plate 4 at its upper part.

[0028] The sleeve 2 is vertically installed on the base plate 1 and sleeved on the outside of the threaded tube 3; a limiting flange 21 is provided at its top end, and the flange end cap is inserted into the groove 31 of the threaded tube 3 and fixed to the outer wall of the sleeve 2 by fasteners 22; the limiting flange 21 restricts the axial disengagement of the threaded tube 3 through the groove 31, while allowing it to rotate and deflect freely, ensuring that the lifting adjustment and angle self-adaptation functions do not interfere with each other.

[0029] Both the top plate 4 and the bottom plate 1 have multiple sets of radial reinforcing ribs 7 on their surfaces.

[0030] With the base structure provided by this utility model, the ball-and-socket joint can automatically deflect when the ground is tilted. The spherical mating structure of the ball-and-socket recess 11 and the ball-and-socket protrusion 5 allows the threaded pipe 3 to self-adaptively deflect within a range of ±15°, keeping the top plate 4 always horizontal. This eliminates the need for manual leveling of the foundation and ensures that the scaffold uprights are subjected to vertical force. The limiting flange 21 restricts the axial disengagement of the threaded pipe 3 through the groove 31, while allowing it to rotate and deflect freely, ensuring that the lifting adjustment and angle self-adaptive functions do not interfere with each other.

[0031] The above description is an explanation of the present utility model and not a limitation thereof. The scope of the present utility model is defined by the claims. Within the protection scope of the present utility model, any form of modification may be made.

Claims

1. An adjustable screw base for steel scaffolding, comprising a base plate (1) set on the ground, a sleeve (2) vertically installed at the central axis of the base plate (1), a threaded pipe (3) provided along the central axis of the inner cavity of the sleeve (2), and a top plate (4) threadedly connected to the upper part of the threaded pipe (3), characterized in that... A ball socket recess (11) is provided at the central axis of the base plate (1), and a ball socket protrusion (5) is provided above the ball socket recess (11). The threaded tube (3) is mounted on the ball socket protrusion (5), and a handle (6) is provided through the lower part of the threaded tube (3).

2. An adjustable screw base for a steel scaffold, as claimed in claim 1, wherein: The bottom of the ball-and-socket recess (11) is flat, its cross-section is disc-shaped, and its upper surface is a concave ball-and-socket structure. The ball-and-socket protrusion (5) consists of two small cylinders (52) and a large cylinder (51) that are combined together. The bottom of the large cylinder (51) is a protruding ball-and-socket structure.

3. An adjustable screw base for a steel scaffold, as claimed in claim 1, wherein: The annular portion of the upper cut-off end face of the sleeve (2) is provided with a limiting flange (21), and the corresponding position of the threaded pipe (3) is provided with a groove (31). The body of the limiting flange (21) is sleeved on the top outer ring of the sleeve (2), and its horizontal end cap portion is fitted into the groove (31).

4. A steel scaffolding adjustable screw base as claimed in claim 3, characterized in that: Multiple mounting holes are provided along the annular end face of the sleeve (2), and the limiting flange (21) is fixed to the outer wall of the sleeve (2) by fasteners (22).

5. An adjustable screw base for a steel scaffold, as claimed in claim 1, wherein: The top plate (4) and bottom plate (1) are each provided with multiple sets of reinforcing ribs (7) corresponding to their main body parts.

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