Stair handrail fixing device

Abstract

The utility model discloses a fixing device for a stair handrail. The fixing device comprises an anchor bolt screw. One end of the anchor bolt screw rod is provided with a guide column, one end of the guide column is provided with a storage groove, the storage groove extends to the inner side of the anchor bolt screw rod, the inner side of the storage groove is provided with a rotary clamping piece, and the rotary clamping piece is rotationally installed in the storage groove through a connecting rod. In the installation process, the gasket can be stored in the storage groove and inserted into a hole formed in a stone curtain wall in advance along with the anchor bolt screw rod, after the rotary clamping piece completely stretches into the hole, the rotary clamping piece rotates out and is in a cross shape with the anchor bolt screw rod under the action of the spring sleeve, and therefore the stone curtain wall can be installed. And then the nut on the anchor bolt screw rod is rotated, so that the nut cap is tightened and abuts against the stone curtain wall, and the handrail is mounted at the other end of the anchor bolt screw rod, so that the whole mounting process is quicker and more convenient.

Description

Technical Field

[0001] The utility model belongs to the technical field of stair handrail installation, and in particular relates to a fixing device for stair handrails. Background Art

[0002] With the development of modern architecture, the application of architectural stone curtain walls has been very extensive. The existing stone curtain wall panels mainly have several connection methods such as pin connection, back bolt connection and short slot butterfly buckle connection. When installing the current stone curtain wall stair handrail, it is impossible to quickly install the embedded parts, which affects the progress of the handrail construction and installation.

[0003] Therefore, the utility model designs a fixing device for stair handrails. Utility Model Content

[0004] The purpose of the utility model is to provide a fixing device for stair handrails to solve the problems raised in the above background technology.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a device for fixing a stair handrail, comprising an anchor screw; one end of the anchor screw is provided with a guide column, one end of the guide column is provided with a receiving groove, the receiving groove extends to the inner side of the anchor screw, the inner side of the receiving groove is provided with a rotating card, the rotating card is rotatably installed in the receiving groove through a connecting rod, two ends of the connecting rod pass through the guide column, and the two ends of the connecting rod extend to the outside of the guide column, and the two ends of the connecting rod are fixed to the guide column by welding, the connecting rod is provided with a spring sleeve, one end of the spring sleeve is fixed to the connecting rod, and the other end of the spring sleeve is fixed to the rotating card, and the other end of the anchor screw is sequentially provided with a gasket, a spring gasket and a nut from the inside to the outside, the gasket and the spring gasket are movably sleeved on the anchor screw, and the nut is installed on the anchor screw by threaded engagement.

[0006] Preferably, the anchor screw and the guide column are an integrally formed one-piece structure.

[0007] Preferably, a connecting head is integrally provided at one end of the connecting rod, a bottom end of the connecting head and the guide column form an annular chamfered groove, and an upper welding layer is formed in the annular chamfered groove by welding.

[0008] Preferably, the other end of the connecting rod and the guide column are spliced ​​to form an arc-shaped annular groove, and the arc-shaped annular groove is filled with a lower welding layer by welding.

[0009] Preferably, when the spring sleeve is in a natural state, the rotating card and the guide column are in a cross shape.

[0010] Compared with the prior art, the utility model has the following beneficial effects: a receiving groove is provided at one end of the anchor screw, and a rotatable and resetting rotating card is installed in the receiving groove; during installation, the gasket can be stored in the receiving groove and inserted into a hole previously punched on the stone curtain wall together with the anchor screw; after the rotating card is fully extended into the hole, the spring sleeve causes the rotating card to rotate out and form a cross with the anchor screw; then the nut on the anchor screw is rotated to tighten the nut and press it against the stone curtain wall; a handrail is installed at the other end of the anchor screw, making the entire installation process quicker and more convenient. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 It is a schematic diagram of the rotating card of the utility model in the display state.

[0012] Figure 2 It is a schematic diagram of the rotating card of the present invention being located in the storage slot.

[0013] Figure 3 It is a partial cross-sectional structural schematic diagram of the utility model.

[0014] Figure 4 It is a schematic diagram of the enlarged structure of point A of the utility model.

[0015] 1. Anchor screw; 2. Washer; 3. Spring washer; 4. Nut; 5. Guide column; 6. Rotating card; 7. Connector; 8. Storage slot; 9. Upper welding layer; 10. Spring sleeve; 11. Connecting rod; 12. Lower welding layer. DETAILED DESCRIPTION

[0016] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0017] See also Figure 1-4The utility model provides a technical solution: a fixing device for stair handrails, comprising an anchor screw 1; a guide column 5 is provided at one end of the anchor screw 1, a receiving groove 8 is opened at one end of the guide column 5, the receiving groove 8 extends to the inner side of the anchor screw 1, a rotating card 6 is provided on the inner side of the receiving groove 8, and the rotating card 6 is rotatably installed in the receiving groove 8 through a connecting rod 11. For the convenience of installation, the rotating card 6 can be rotated to the inner side of the receiving groove 8, and smoothly inserted into the installation hole on the curtain wall together with the guide column 5, and both ends of the connecting rod 11 pass through the guide column 5, and both ends of the connecting rod 11 extend to the guide column 5. The outside of the connecting rod 11 is fixed to the guide column 5 by welding, and a spring sleeve 10 is sleeved on the connecting rod 11. One end of the spring sleeve 10 is fixed to the connecting rod 11, and the other end of the spring sleeve 10 is fixed to the rotating card 6. In order to facilitate the reset of the rotating card 6, the other end of the anchor screw 1 is provided with a gasket 2, a spring gasket 3 and a nut 4 from the inside to the outside. The gasket 2 and the spring gasket 3 are movably sleeved on the anchor screw 1. The nut 4 is installed on the anchor screw 1 by threaded engagement, which is used to lock the anchor screw 1 on the stone curtain wall, so as to facilitate the subsequent installation of the handrail on the other end of the anchor screw 1. In this embodiment, preferably, the anchor screw 1 and the guide column 5 are an integrated structure, in order to ensure the integrity and firmness of the structure. In this embodiment, preferably, a connector 7 is integrally provided at one end of the connecting rod 11, and the bottom end of the connector 7 forms an annular chamfered groove with the guide column 5, and an upper welding layer 9 is formed by welding in the annular chamfered groove, in order to ensure that the welding is more firm. In this embodiment, preferably, the other end of the connecting rod 11 is spliced ​​with the guide column 5 to form an arc-shaped annular groove, and the arc-shaped annular groove is filled with a lower welding layer 12 by welding to ensure that the welding is more firm. In this embodiment, preferably, the spring sleeve 10 is in a natural state, and the rotating card 6 and the guide column 5 are in a cross shape. In order to facilitate installation, after the rotating card 6 is turned to the storage groove 8, it can be reset by the spring sleeve 10, which is convenient for the rotating card 6 and the guide column 5 to be inserted into the installation hole on the curtain wall. After that, they can be reset by the spring sleeve 10, which has the effect of preventing them from falling off.

[0018] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A fixing device for a stair handrail, comprising an anchor bolt (1); characterized in that: A guide column (5) is provided at one end of the anchor screw (1), a receiving groove (8) is provided at one end of the guide column (5), the receiving groove (8) extends to the inner side of the anchor screw (1), a rotating card (6) is provided on the inner side of the receiving groove (8), the rotating card (6) is rotatably installed in the receiving groove (8) through a connecting rod (11), both ends of the connecting rod (11) pass through the guide column (5), and both ends of the connecting rod (11) extend to the outside of the guide column (5), and both ends of the connecting rod (11) are connected to the guide column (5). The column (5) is fixed by welding, a spring sleeve (10) is sleeved on the connecting rod (11), one end of the spring sleeve (10) is fixed to the connecting rod (11), and the other end of the spring sleeve (10) is fixed to the rotating card (6), and the other end of the anchor bolt screw (1) is provided with a gasket (2), a spring gasket (3) and a nut (4) in sequence from the inside to the outside, the gasket (2) and the spring gasket (3) are movably sleeved on the anchor bolt screw (1), and the nut (4) is installed on the anchor bolt screw (1) by screwing.

2. A stair handrail fixing device according to claim 1, characterized in that: The anchor bolt screw (1) and the guide column (5) are an integrally formed one-piece structure.

3. A stair handrail fixing device according to claim 1, characterized in that: One end of the connecting rod (11) is integrally provided with a connecting head (7), the bottom end of the connecting head (7) and the guide column (5) form an annular chamfered groove, and an upper welding layer (9) is formed in the annular chamfered groove by welding.

4. A stair handrail fixing device according to claim 1, characterized in that: The other end of the connecting rod (11) and the guide column (5) are spliced ​​to form an arc-shaped annular groove, and the arc-shaped annular groove is filled with a lower welding layer (12) through welding.

5. The fixing device for stair handrail according to claim 1, characterized in that: When the spring sleeve (10) is in a natural state, the rotating card (6) and the guide column (5) are in a cross shape.

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