Internal thread connecting device for glass fiber reinforcing steel bars

Abstract

The utility model discloses an internal thread connecting device for a glass fiber reinforcing steel bar, which comprises a steel internal thread reducing screw head and a steel double-sided thread screw head, and the internal thread connecting device for the glass fiber reinforcing steel bar is a reducing steel internal processing thread connecting screw head. The reinforcing steel bar connecting device can be widely applied to tunnel shield construction sites, reinforcing steel bars made of the same material or different materials can be connected through the connecting device, so that the connecting operation is more simplified, the reinforcing steel bars are stressed more uniformly and stably, joints are prevented from being damaged in the hoisting and hoisting processes after the glass fiber reinforcing steel bars are connected with traditional reinforcing steel bars, and meanwhile, the service life of the reinforcing steel bars is prolonged. According to the steel bar connector, steel bars of different specifications and different materials can be connected at will, through stress can be achieved after connection, the tightness of the connector can be well guaranteed, the connection strength can be guaranteed through screw thread connection, the construction connection process is simplified, the construction difficulty is reduced, the workload of constructors is relieved, and the working efficiency is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of glass fiber pile steel bar connection for foundation pit maintenance at a subway shield entrance and exit, in particular to a glass fiber steel bar internal thread connection device. Background Art

[0002] In view of the current construction projects, the construction methods of urban subway tunnels in the first-tier and second-tier cities in the country use shield machines to ensure the high efficiency and safety of construction. Compared with the traditional urban subway shield shaft, every time the shield machine pushes out the vertical wall, since the support structure of its receiving shaft is designed with traditional steel bars, the vertical wall and its internal steel bars are worn out in the process of shielding. For this reason, the retaining structure (retaining piles) and the shield machine entry and exit positions use part of the glass fiber reinforcement to replace the traditional steel bars. This can greatly reduce the difficulty and cost of the shield machine entering the hole. When the shield machine enters the hole, it can directly cut the retaining pile wall for excavation, which speeds up the construction progress, reduces the construction risk, and also achieves certain economic benefits. However, there are a series of connection technical problems between the glass fiber reinforcement and the traditional steel bars, which reduces the overall quality. Utility Model Content

[0003] The utility model aims to provide a glass fiber reinforced steel bar internal thread connection device to solve the problems raised in the above background technology.

[0004] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a glass fiber steel bar internal thread connection device, including a steel internal thread reducing thread head and a steel double-sided thread thread head, the glass fiber steel bar internal thread connection device is a reducing steel internal machined thread connection thread head, and the other connection thread head is a steel machined matching internal and external double thread connection thread head, the two are connected by threads to form a whole when in use.

[0005] Preferably, the steel internal thread reducer and the steel double-sided threaded thread head connect the fiberglass steel bars with traditional steel bars or steel bars of different materials through their respective internal threads, and then connect the inner buckles of the steel internal thread reducer and the steel double-sided threaded thread head and the outer buckles of their respective thread heads to form a concentric full-length steel bar extension, thus completing the connection and forming an extension of the steel bar, thereby meeting the requirements for the main reinforcement connection length in the pile body component during construction.

[0006] Preferably, the steel internal thread reducer is a steel internal thread reducer sleeve with a large and small head, and the internal threaded thread matches the threaded thread of the glass fiber reinforcement itself when screwed together.

[0007] Preferably, the steel double-sided threaded wire head is a steel sleeve with internal and external threads of a full diameter, and the internal thread matches the threaded thread of a traditional steel bar straight thread processing when screwed together. After connecting the steel bar, it is connected to the reduced diameter internal thread sleeve through its own external thread through the external thread.

[0008] Preferably, the steel internal thread reducer and the steel double-sided threaded thread are connected to each other through their own internal and external threads.

[0009] Compared with the prior art, the beneficial effects of the utility model are as follows:

[0010] The utility model can be widely used in tunnel shield construction sites. It can connect any steel bars of the same material or different materials through the connecting device, making the connection operation simpler, the force on the steel bars more uniform and stable, and preventing the damage of the joints during the lifting and transportation of the glass fiber steel bars after being connected with the traditional steel bars. At the same time, it can realize the arbitrary connection of steel bars of different specifications and materials. After the connection, they can be subjected to force through the center, which can not only well ensure the tightness of the connection joints, but also achieve the guarantee of the connection strength through the connection of the threaded buckle, simplifying the construction connection process, reducing the construction difficulty, reducing the workload of construction personnel, and improving work efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 This is a schematic diagram of the connection nodes of the utility model;

[0012] Figure 2 This is a connection diagram of the utility model.

[0013] In the figure: a steel internal thread reducer thread head 1 and a steel double-sided thread thread head 2. DETAILED DESCRIPTION

[0014] 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.

[0015] In the description of the application, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "provided with", "connected", etc. should be understood in a broad sense. For example, "connected" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be an indirect connection through an intermediate medium, or it can be the internal connection of two components. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0016] See also Figure 1-Figure 2 A glass fiber reinforced steel internal thread connection device comprises a steel internal thread reducer thread head 1 and a steel double-sided thread thread head 2. The glass fiber reinforced steel internal thread connection device is a steel internal threaded connection thread head with a reduced diameter, and the other connection thread head is a steel internal and external double threaded connection thread head. The two are connected by threads to form a whole when in use.

[0017] It can be widely used in tunnel shield construction sites. It can connect any steel bars of the same material or different materials through the connecting device, making the connection operation simpler, the force on the steel bars more uniform and stable, and preventing the damage of the joints during the lifting and transportation of the glass fiber steel bars and traditional steel bars. At the same time, it can realize the arbitrary connection of steel bars of different specifications and materials. After the connection, they can be stressed through the center, which can not only ensure the tightness of the connection joints, but also achieve the guarantee of the connection strength through the threaded connection, simplifying the construction connection process, reducing the construction difficulty, reducing the workload of construction personnel, and improving work efficiency.

[0018] The steel internal thread reducer 1 and the steel double-sided threaded thread head 2 connect the glass fiber steel bar with the traditional steel bar or the steel bar of different materials through their own internal threads, and then connect the inner buckle of the steel internal thread reducer 1 and the steel double-sided threaded thread head 2 with the outer buckle of the steel internal thread reducer 1 and the steel double-sided threaded thread head 2 to form a concentric full-length steel bar extension, that is, the connection is completed to form an extension of the steel bar, which meets the requirements of the main reinforcement connection length in the pile body component during construction. The radial thread head 1 is a steel reducing internal thread sleeve with a large and small head. The internal threaded thread matches the threaded thread of the glass fiber reinforcement itself when screwed together. The steel double-sided threaded thread head 2 is a full-diameter internal and external threaded steel sleeve. The internal thread matches the threaded thread of the traditional steel bar straight thread processing when screwed together. After connecting the steel bars, the steel bars are connected to the reducing internal thread sleeve through their own external threads through the external threads. The steel internal thread reducing thread head 1 and the steel double-sided threaded thread head 2 are connected to the threads through their own internal and external threads.

[0019] The usage steps are as follows: A. According to the position of the subway shield, calculate the cutting length of the fiberglass steel bars and traditional steel bars of the required pile components, and use tools to cut them to the required length; B. For the cut threaded fiberglass steel bar, tighten and fix one end with the straight section of the steel internal thread reducer 1 through a threaded buckle; C. For the cut traditional steel bar, tighten and fix one end with the steel double-sided threaded wire head 2 through an internal threaded buckle; D. Then, use the internal thread of the reducing end of the steel internal thread reducer 1 and the external thread of the steel double-sided threaded wire head 2 to connect the two wire heads that have been connected to steel bars of different materials through a threaded buckle, so as to form a final connection of fiberglass pile steel bars of different materials.

[0020] 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 glass fiber reinforced steel bar internal thread connection device, comprising a steel internal thread reducer (1) and a steel double-sided threaded thread head (2), characterized in that: The glass fiber reinforced steel bar internal thread connection device is a steel internal thread connection thread head with a variable diameter, and another connection thread head is a steel internal and external double thread connection thread head, and the two are connected by threads to form a whole when in use.

2. A glass fiber reinforced steel bar internal thread connection device according to claim 1, characterized in that: The steel internal thread reducer (1) and the steel double-sided thread reducer (2) connect the glass fiber steel bar with the conventional steel bar or steel bars of different materials through their respective internal threads, and then the inner buckles of the steel internal thread reducer (1) and the steel double-sided thread reducer (2) are connected with the outer buckles of the steel internal thread reducer (1) and the steel double-sided thread reducer (2) to form a concentric through-length steel bar extension, thus completing the connection and forming an extension of the steel bar, thereby meeting the requirements for the main bar connection length in the pile member during construction.

3. A glass fiber reinforced steel bar internal thread connection device according to claim 1, characterized in that: The steel internal thread reducer (1) is a steel reducer internal thread sleeve with a large and small head, and the internal threaded thread matches the threaded thread of the glass fiber reinforcement itself when screwed together.

4. A glass fiber reinforced steel bar internal thread connection device according to claim 1, characterized in that: The steel double-sided threaded head (2) is a steel sleeve with internal and external threads of a full diameter, the internal thread of which matches the thread of a conventional steel bar straight thread processing sleeve when screwed together, and after connecting the steel bar, the steel bar is connected to the reduced diameter internal thread sleeve through its own external thread through the external thread.

5. A glass fiber reinforced steel bar internal thread connection device according to claim 1, characterized in that: The steel internal thread reducer (1) and the steel double-sided threaded thread head (2) are connected to each other via internal and external threads.

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