Fixing piece structure capable of fixing handrail at single point

Abstract

The utility model provides a fixing piece structure capable of fixing a handrail at a single point. The fixing piece structure comprises a fixing base, a supporting arm, a mounting sleeve and an embedded anchor bolt, an anchoring mounting hole is formed in the middle of the fixed base, the end of the embedded anchor bolt penetrates through the anchoring mounting hole, a fastening nut is further arranged on the embedded anchor bolt, and the fastening nut tightly presses the fixed base; the supporting arm is fixed on the fixed base, the mounting sleeve is fixed at the end part of the supporting arm, a grab rail to be mounted is limited in the mounting sleeve, a locking hole is further formed in the side wall of the mounting sleeve, a locking piece is arranged in the locking hole, and the grab rail to be mounted in the mounting sleeve is locked by the locking piece. The fixing piece structure has the advantages that the fixing piece structure can fix the handrail structure through single anchoring points, the problem that a tunnel structure is damaged due to the fact that drilling is needed in a traditional anchor bolt fixing scheme is solved, and the influence of handrail structure installation on a shield tunnel is reduced; and the fixing piece structure can simplify the construction process of the grab rail and improve the installation efficiency of the grab rail.

Description

Technical Field

[0001] This utility model relates to the technical field of handrail installation devices, specifically a fixing structure that can fix a handrail at a single point. Background Technology

[0002] Various supports and handrails are installed inside shield tunnels for urban rail transit. These supports and handrails usually have rod-like structures. Currently, the rods are usually fixed by pre-embedded sleeves. Since the pre-embedded sleeves are point-embedded structures, expansion bolts are also needed to fix the handrails when they are installed. However, the installation of expansion bolts requires drilling holes in the tunnel structure wall, which can easily damage the tunnel structure and increase the construction process and project investment. Utility Model Content

[0003] In view of this, the present invention provides a fixing structure for a handrail that can be fixed at a single point, including a fixing base, a support arm, a mounting sleeve and a pre-embedded anchor bolt;

[0004] The fixed base is provided with an anchoring installation hole in the middle. The pre-embedded anchor is embedded in the wall. The end of the pre-embedded anchor passes through the anchoring installation hole. The pre-embedded anchor is also provided with a fastening nut, which presses the fixed base.

[0005] The support arm is fixed to the fixed base, the mounting sleeve is fixed to the end of the support arm, and the handrail to be installed passes through the mounting sleeve and is confined within the mounting sleeve.

[0006] The mounting sleeve is also provided with a locking hole, and a locking element is provided in the locking hole. The end of the locking element passes through the side wall of the mounting sleeve and locks the handrail to be installed in the mounting sleeve.

[0007] Furthermore, there are two support arms, with a fixed end and a connecting end at each end. The fixed ends of the two support arms are respectively connected to the fixed base, and the connecting ends of the two support arms are both connected to the outer wall of the mounting sleeve.

[0008] Furthermore, the support arm is provided with a plurality of reinforcing side holes, which are arranged along the side of the support arm.

[0009] Furthermore, a fastening washer 52 is provided between the fastening nut and the fixed base.

[0010] Furthermore, the surface of the fixed base closest to the wall is the mounting surface, and the mounting surface has a groove in the middle, thereby forming a U-shaped structure on the mounting surface of the fixed base.

[0011] Furthermore, the fixed base, the support arm, and the mounting sleeve are an integrated structure, and the fixed base, the support arm, and the mounting sleeve are made of one of the following materials: phenolic resin-based composite material, unsaturated polyester resin-based composite material, vinyl ester resin-based composite material, and polyurethane composite material.

[0012] Furthermore, the fixed base is provided with a mounting boss, and the anchoring mounting hole passes through the mounting boss.

[0013] Furthermore, the anchoring installation hole is a strip-shaped oval installation hole, and the pre-embedded anchor bolt can move along the anchoring installation hole within the anchoring installation hole.

[0014] Furthermore, the mounting sleeve is a circular sleeve, the locking hole is a threaded hole, the locking element is a fastening screw, and the fastening screw is connected to the locking hole by a threaded connection.

[0015] Furthermore, the fastening screw is a pointed screw, and the pointed head of the fastening screw is anchored inside the side wall of the handrail.

[0016] The advantages of this utility model's single-point fixing structure for handrails are as follows: The fixing structure includes a fixing base, a support arm, an installation sleeve, and pre-embedded anchor bolts. The fixing base has an anchoring hole in the middle, and the pre-embedded anchor bolts are embedded in the wall, with the end of the anchor bolt passing through the anchoring hole. A fastening nut is also provided on the anchor bolt, pressing the fixing base together. The support arm is fixed to the fixing base, and the installation sleeve is fixed to the end of the support arm. The handrail to be installed is confined within the installation sleeve. A locking hole is provided on the side wall of the installation sleeve, and a locking element is provided within the locking hole. The end of the locking element passes through the side wall of the installation sleeve and locks the handrail to be installed within the installation sleeve. This fixing structure can fix the handrail structure through a single anchor point, solving the problem of drilling and damaging the tunnel structure required by traditional anchor bolt fixing methods, and reducing the impact of handrail installation on shield tunnels. Furthermore, this fixing structure simplifies the construction process of the handrail, improves the installation efficiency of the handrail, and saves on project investment.

[0017] The anchoring holes of this fastener structure are oval-shaped mounting holes. The pre-embedded anchor bolts can move along the anchoring holes, which allows for vertical adjustment of the installation position of the fixed base, greatly reducing the difficulty of construction.

[0018] The mounting sleeve of the fastener structure is connected to the fixed base by two support arms. The fixed base, the two support arms and the mounting sleeve are connected to form a triangular structure with high structural strength. Attached Figure Description

[0019] Figure 1 This is a three-dimensional structural diagram of a fixing component structure for a handrail that can be fixed at a single point, according to an embodiment of this utility model.

[0020] Figure 2 This is a schematic diagram of the installation structure of a fixing component structure for a handrail that can be fixed at a single point, according to an embodiment of this utility model.

[0021] In the above figure: 1-fixed base, 11-anchoring mounting hole, 12-mounting boss, 2-support arm, 21-reinforced side hole, 3-mounting sleeve, 31-locking hole, 4-locking component, 5-embedded anchor bolt, 51-fastening nut, 52-fastening washer, 6-handrail. Detailed Implementation

[0022] To make the objectives, technical solutions and advantages of this utility model clearer, the embodiments of this utility model will be further described below with reference to the accompanying drawings.

[0023] Please refer to Figures 1 to 2 The present invention provides a fixing structure for a handrail that can be fixed at a single point, comprising a fixing base 1, a support arm 2, a mounting sleeve 3, and a pre-embedded anchor bolt 5.

[0024] The fixed base 1 has an anchoring hole 11 in the middle. The mounting end face of one end face of the fixed base 1 is attached to the surface of the shield tunnel wall. The pre-embedded anchor bolt 5 is embedded in the shield tunnel wall. The end of the pre-embedded anchor bolt 5 has a threaded structure. The pre-embedded anchor bolt 5 passes through the anchoring hole 11. The end of the pre-embedded anchor bolt is also provided with a fastening nut 51. The fastening nut 51 presses the fixed base 1, thereby locking the fixed base 1 to the surface of the shield tunnel wall.

[0025] The support arm 2 is fixed to the fixed base 1, and the mounting sleeve 3 is fixed to the end of the support arm 2. In this embodiment, the mounting sleeve 3 is a circular sleeve structure, and the handrail 6 to be installed is a cylindrical rod structure. The outer diameter of the handrail 6 is equal to or slightly smaller than the inner diameter of the mounting sleeve 3. The handrail 6 passes through the mounting sleeve 3 and is confined within the mounting sleeve 3.

[0026] The side wall of the mounting sleeve is also provided with a locking hole 31, and a locking member 4 is provided in the locking hole 31. The end of the locking member 4 passes through the side wall of the mounting sleeve 3 and locks the handrail 6 to be installed in the sleeve 3.

[0027] This fastener structure can fix the handrail structure with a single anchor point (pre-embedded anchor bolt 5), which solves the problem of drilling and damaging the tunnel structure required by traditional anchor bolt fixing schemes, and reduces the impact of handrail structure installation on shield tunnels; in addition, this fastener structure can reduce the construction process of handrails, improve the installation efficiency of handrails, and save project investment.

[0028] In a preferred embodiment, there are two support arms 2, with a fixed end and a connecting end at each end. The fixed ends of the two support arms 2 are respectively connected to the fixed base 1, and the connecting ends of the two support arms 2 are both connected to the outer wall of the mounting sleeve 3. This allows the fixed base 1, the two support arms 2, and the mounting sleeve 3 to form a stable triangular structure, which can effectively improve the support strength of the two support arms 3 on the support sleeve and facilitate the installation of the fastening nut 51.

[0029] In a preferred embodiment, the support arm 2 is provided with a plurality of reinforcing side holes 21. The reinforcing side holes 21 are arranged along the side of the support arm 2, and there is a gap between adjacent reinforcing side holes 21. The reinforcing side holes 21 can be through holes or holes that stop at a certain depth. The reinforcing side holes 21 can further enhance the structural strength of the support arm 2.

[0030] In a preferred embodiment, a fastening washer 52 is provided between the fastening nut 51 and the fixed base 1, and the fastening nut 51 presses the fixed base 1 with the fastening washer 52.

[0031] In a preferred embodiment, the mounting surface has a groove in the middle, thereby forming a U-shaped structure on the mounting surface of the fixed base 1. The U-shaped structure of the mounting surface can increase the bending stiffness of the fixed base 1.

[0032] Furthermore, the fixed base 1, the support arm 2, and the mounting sleeve 3 are an integrated structure, which are formed by molding. The fixed base 1, the support arm 2, and the mounting sleeve 3 are made of one of the following materials: phenolic resin-based composite material, unsaturated polyester resin-based composite material, vinyl resin-based composite material, and polyurethane composite material.

[0033] In a preferred embodiment, the fixed base 1 is provided with a mounting boss 12, and the anchoring mounting hole 11 is provided with the mounting boss 12. The anchoring mounting hole is a strip-shaped oval mounting hole, and the pre-embedded anchor bolt 5 can move along the anchoring mounting hole 11. This allows the installation position of the fixed base to be adjusted up and down, reducing the accuracy requirements of the pre-embedded anchor bolt 5 and greatly reducing the construction difficulty.

[0034] In a preferred embodiment, the locking hole 31 is a threaded hole, and the locking element 4 is a fastening screw. The fastening screw is connected to the locking hole 31 by a threaded connection. The fastening screw is a pointed screw, and the pointed head of the fastening screw is anchored inside the side wall of the handrail 6, which ensures that the fastening screw is fully locked to the handrail 6.

[0035] In this document, the directional terms such as front, back, top, and bottom are defined based on the location of the components in the accompanying drawings and their relative positions to each other, solely for the purpose of clarity and convenience in expressing the technical solution. It should be understood that the use of these directional terms should not limit the scope of protection claimed in this application.

[0036] Where there is no conflict, the above embodiments and features described herein can be combined with each other.

[0037] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A fixing structure for a handrail that can be fixed at a single point, characterized in that: Includes a fixed base (1), a support arm (2), an installation sleeve (3), and pre-embedded anchor bolts (5); The fixed base (1) is provided with an anchoring installation hole (11) in the middle. The pre-embedded anchor (5) is pre-embedded in the wall. The end of the pre-embedded anchor (5) passes through the anchoring installation hole (11). The pre-embedded anchor (5) is also provided with a fastening nut (51). The fastening nut (51) presses the fixed base (1). The support arm (2) is fixed to the fixed base (1), and the mounting sleeve (3) is fixed to the end of the support arm (2). The handrail (6) to be installed passes through the mounting sleeve (3) and is confined within the mounting sleeve (3). The mounting sleeve (3) is also provided with a locking hole (31) on its side wall. A locking member (4) is provided in the locking hole (31). The end of the locking member (4) passes through the side wall of the mounting sleeve (3) and locks the handrail (6) to be installed in the mounting sleeve (3). The anchoring installation hole (11) is a strip-shaped oval installation hole, and the pre-embedded anchor bolt (5) can move along the anchoring installation hole (11) within the anchoring installation hole (11); The mounting sleeve (3) is a circular sleeve, the locking hole (31) is a threaded hole, the locking element (4) is a fastening screw, and the fastening screw is connected to the locking hole (31) by a threaded connection. The fastening screw is a pointed screw, and the pointed head of the fastening screw is anchored inside the side wall of the handrail (6).

2. The fixing structure for a handrail that can be fixed at a single point according to claim 1, characterized in that: There are two support arms (2), with a fixed end and a connecting end at each end. The fixed ends of the two support arms (2) are connected to the fixed base (1), and the connecting ends of the two support arms (2) are connected to the outer wall of the mounting sleeve (3).

3. The fixing structure for a handrail that can be fixed at a single point according to claim 1, characterized in that: The support arm (2) is provided with a plurality of reinforcing side holes (21), which are arranged along the side of the support arm (2).

4. The fixing structure for a handrail that can be fixed at a single point according to claim 1, characterized in that: A fastening washer (52) is provided between the fastening nut (51) and the fixed base (1).

5. The fixing structure for a handrail that can be fixed at a single point according to claim 1, characterized in that: The mounting surface of the fixed base (1) near the wall is the mounting surface, and the mounting surface has a groove in the middle, so that the mounting surface of the fixed base (1) forms a U-shaped structure.

6. The fixing structure for a handrail that can be fixed at a single point according to claim 1, characterized in that: The fixed base (1), the support arm (2) and the mounting sleeve (3) are an integrated structure. The fixed base (1), the support arm (2) and the mounting sleeve (3) are made of one of the following materials: phenolic resin-based composite material, unsaturated polyester resin-based composite material, vinyl resin-based composite material and polyurethane composite material.

7. The fixing structure for a handrail that can be fixed at a single point according to claim 1, characterized in that: The fixed base (1) is provided with a mounting boss (12), and the anchoring mounting hole (11) passes through the mounting boss (12).

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