Main supporting column for temporary protection of stairs

Abstract

The utility model provides a stair temporary protection main supporting column which is used for being installed on a stair and comprises a U-shaped plate, a clamping block is arranged in the U-shaped plate, a straight screw rod is rotationally connected to the middle of the lower end of the clamping block, the straight screw rod downwards penetrates through and is in threaded connection with the U-shaped plate, and a stand column is fixedly connected to the upper end of the U-shaped plate. The side wall of the stand column is fixedly connected with a bearing plate, a U-shaped screw is arranged on the bearing plate in a penetrating mode, and the end of the U-shaped screw is in threaded connection with a nut. The stair climbing device is simple in structure and easy to transfer, mount and use, and meanwhile, a clamping mode is adopted, so that damage to stairs is avoided.

Description

Technical Field

[0001] The invention relates to the technical field of temporary guardrails, and in particular to a temporary protective main support column for stairs. Background Art

[0002] During the construction of high-rise buildings, whether it is a prefabricated staircase or a cast-in-place staircase, guardrails are usually not installed immediately. However, during the construction process, the movement of personnel makes the installation of temporary guardrails necessary.

[0003] In existing temporary guardrails, expansion bolts are usually driven into the edge or side wall of the stairs, and then connected to the relevant supporting structure. However, this method causes damage to the installation of the stairs, and when installing the guardrail later, it may be necessary to drill holes and drive in expansion bolts, which will cause damage to the stairs. Summary of the invention

[0004] In order to solve the above problems, the present invention discloses a temporary stair protection main support column for installation on the stairs, comprising a U-shaped plate, a clamping block is arranged inside the U-shaped plate, a straight screw is rotatably connected to the middle part of the lower end of the clamping block, and the straight screw passes through downward and is threadedly connected to the U-shaped plate. During installation, the U-shaped plate is clamped onto the stairs from the side, and then the straight screw is rotated to make the clamping block close to the stairs, thereby fixing the U-shaped plate.

[0005] The upper end of the U-shaped plate is fixedly connected to a column, and the side wall of the column is fixedly connected to a receiving plate, and a U-shaped screw is inserted on the receiving plate, and the ends of the U-shaped screw are threadedly connected with nuts. During the installation, the round tube is placed on the receiving plate, and then the U-shaped screw is used to embrace the round tube, and the nut is tightened to fix the round tube. The main support column is fixed on the connecting staircase and built into a guardrail. The operation is simple and will not cause destructive damage to the stairs.

[0006] Preferably, the lower side wall of the straight screw is provided with a through hole. A rod-shaped tool can be inserted into the through hole as a handle to rotate the straight screw, rather than directly providing a handle, so as to prevent unrelated personnel from directly rotating the straight screw and causing safety hazards.

[0007] Preferably, the clamping block is hollow and has a reinforcing plate vertically arranged inside. The hollow clamping block can reduce the weight of the device and the reinforcing plate can ensure that the clamping block has sufficient strength to meet the use requirements.

[0008] Preferably, the upper end of the clamping block is an inclined surface, and when the clamping block is installed, the inclined surface fits the inclined surface of the lower end of the stairs. That is, the upper end surface of the clamping block fits the inclined surface of the lower end of the stairs as much as possible to improve the stability of the clamping. Furthermore, a rubber sheet can be added to the inclined surface of the clamping block to play an anti-slip role and further improve the stability of the installation.

[0009] Preferably, the receiving plate and the lower end inclined surface of the stairs are arranged in parallel. The receiving plate arranged obliquely can provide more contact surface between the receiving plate and the round tube when the round tube is placed, and improve the appearance of the guardrail after installation.

[0010] Preferably, an end cap is sleeved on the upper end of the column. The upper end of the end cap is an arc surface, which improves the beauty of the main support column and improves the comfort when holding the upper end of the column.

[0011] The beneficial effects of the present invention are as follows:

[0012] 1. The present invention adopts a U-shaped plate, a clamping block and a straight screw to clamp and fix it on one side of the stairs. This fixing method will not cause damage to the stairs.

[0013] 2. The present invention has a simple structure and is easy to transport, install and use. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a three-dimensional schematic diagram of the present invention;

[0015] Figure 2 It is a structural schematic diagram of the U-shaped screw of the present invention;

[0016] Figure 3 It is a structural schematic diagram of the clamping block of the present invention;

[0017] Figure 4 It is a schematic diagram of the application of the present invention.

[0018] List of reference numerals:

[0019] 1. U-shaped plate; 2. Clamping block; 3. Column; 4. U-shaped screw; 5. End cap; 6. Adapter plate; 7. Nut; 8. Reinforcement plate; 9. Straight screw; 10. Through hole; 11. Stairs; 12. Round tube. DETAILED DESCRIPTION

[0020] The present invention is further explained below in conjunction with the accompanying drawings and specific embodiments. It should be understood that the following specific embodiments are only used to illustrate the present invention and are not used to limit the scope of the present invention. It should be noted that the words "front", "rear", "left", "right", "upper" and "lower" used in the following description refer to directions in the accompanying drawings, and the words "inner" and "outer" refer to directions toward or away from the geometric center of a specific component, respectively.

[0021] like Figures 1 to 4As shown, a temporary stair protection main support column is used to be installed on the stair 11, including a U-shaped plate 1. When the U-shaped plate 1 is installed, it is inserted into the stair 11 from the side. A clamping block 2 is arranged inside the U-shaped plate 1. A straight screw 9 is rotatably connected to the middle of the lower end of the clamping block 2. The straight screw 9 penetrates downward and is threadedly connected to the U-shaped plate 1. Then the straight screw 9 is rotated, and the straight screw 9 abuts against the clamping block 2, so that the clamping block 2 is close to the stair 11, and the fixed connection of the U-shaped plate 1 is realized, and this fixing method will not cause damage to the stair.

[0022] The upper end of the U-shaped plate 1 is fixedly connected with a column 3, which is a cylindrical pipe fitting and is fixedly connected to the U-shaped plate 1 by welding. The side wall of the column 3 is fixedly connected with a receiving plate 6. There are several receiving plates 6, and U-shaped screws 4 are inserted on the receiving plate 6. The ends of the U-shaped screws 4 are threadedly connected with nuts 7. In the further installation process, the round tube 12 is placed on the receiving plate 6. The round tube 12 can be a scaffolding steel pipe used on the construction site. The U-shaped screw 4 is buckled on the round tube 12, and the end of the U-shaped screw 4 passes through the preset through hole on the receiving plate 6. Finally, the nut 7 is tightened to fix the round tube 12, so as to assemble the guardrail.

[0023] The lower side wall of the straight screw 9 is provided with a through hole 10. A rod-shaped tool is inserted into the through hole 10 as a handle to rotate the straight screw 9 to realize the disassembly and assembly of the U-shaped member 1, but the handle is not directly provided to prevent non-professionals from rotating it and causing safety hazards.

[0024] The clamping block 2 is hollow to reduce the weight of the clamping block 2 and facilitate transportation, and a reinforcing plate 8 is vertically arranged inside to ensure the structural strength of the clamping block 2 to meet the needs of use.

[0025] The upper end of the clamping block 2 is an inclined surface, and when the clamping block 2 is installed, the inclined surface fits the inclined surface of the lower end of the stair 11. During installation, the inclined surface of the clamping block 2 fits the inclined surface of the lower end of the stair 11 as much as possible, which can avoid the clamping block 2 from damaging the inclined surface of the lower end of the stair 11. Furthermore, a layer of rubber sheet can be attached to the inclined surface of the clamping block 2, if it is a flexible material, it can play a role in preventing slipping and improving the firmness of the installation while protecting the stair 11.

[0026] The lower end inclined plane of the receiving plate 6 and the staircase 11 is arranged in parallel. Because the circular tube 12 must be parallel to the lower end inclined plane of the staircase 11 when installing, and the receiving plate 6 is arranged in this way so as to contact with the circular tube 12 better.

[0027] The upper end of the column 3 is sleeved with an end cap 5. The upper end of the end cap 5 is an arc surface, which can improve the comfort when holding by hand.

[0028] The technical means disclosed in the scheme of the present invention are not limited to the technical means disclosed in the above-mentioned implementation mode, but also include technical schemes composed of any combination of the above technical features.

Claims

1. A temporary stair protection main support column, used for installation on a staircase (11), characterized in that: It comprises a U-shaped plate (1), wherein a clamping block (2) is arranged inside the U-shaped plate (1), a straight screw (9) is rotatably connected to the middle part of the lower end of the clamping block (2), and the straight screw (9) passes through downwards and is threadedly connected to the U-shaped plate (1); The upper end of the U-shaped plate (1) is fixedly connected to a column (3), the side wall of the column (3) is fixedly connected to a receiving plate (6), a U-shaped screw rod (4) is inserted into the receiving plate (6), and the ends of the U-shaped screw rod (4) are threadedly connected to nuts (7).

2. A temporary stair protection main support column according to claim 1, characterized in that: A through hole (10) is provided on the lower side wall of the straight screw (9).

3. A temporary stair protection main support column according to claim 1, characterized in that: The clamping block (2) is hollow, and a reinforcing plate (8) is vertically arranged inside.

4. A temporary stair protection main support column according to claim 1, characterized in that: The upper end of the clamping block (2) is an inclined surface, and when the clamping block (2) is installed, the inclined surface fits the inclined surface of the lower end of the staircase (11).

5. The main support column for temporary protection of stairs according to claim 1 is characterized in that: The receiving plate (6) and the lower end inclined surface of the staircase (11) are arranged in parallel.

6. A main support column for temporary protection of stairs according to claim 1, characterized in that: An end cap (5) is sleeved on the upper end of the upright column (3).

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