A prestressed tendon connecting and reinforcing device for building components

Abstract

The utility model discloses a building component prestressed tendon connection reinforcing device, including the connecting sleeve, the connecting sleeve lower extreme fixed mounting has the installation device, the connecting sleeve left end and right end all threadedly installed have the connecting device, two the connecting device opposite one end has respectively and inserts fixed mounting and has no.

Description

Technical Field

[0001] This utility model relates to the field of prestressed tendon connection technology, and in particular to a prestressed tendon connection and reinforcement device for building components. Background Technology

[0002] Prestressed tendons are key materials in prestressing technology. Prestressing technology involves applying prestress to the reinforcing steel bars and other load-bearing modules in a structural member before it bears external loads. This improves the stiffness and hardness of the member, delays the appearance of cracks, and increases the durability of the member. Prestressed tendons are the reinforcing steel bars that are subjected to prestress. Steel strands, steel wires, and steel bars are commonly used as prestressed tendons.

[0003] However, in prestressed concrete structures, prestressing tendons often pass through different concrete members. If the prestressing tendons are not reliably connected, they may break or slip. Traditional prestressing tendon connection methods, such as welding or ordinary sleeve connections, have obvious defects. The heat-affected zone of welding will reduce the material properties, and ordinary sleeve connections cannot apply and effectively maintain prestress at the same time as the connection, resulting in discontinuous prestress transfer and large stress loss.

[0004] The information disclosed in this background section is only intended to enhance the understanding of the background technology of this application, and therefore may include prior art that is not known to those skilled in the art. Utility Model Content

[0005] The main purpose of this utility model is to provide a prestressed tendon connection and reinforcement device for building components, which can effectively solve the problems in the background art.

[0006] To achieve the above objectives, the technical solution adopted by this utility model is as follows: A prestressed tendon connection and reinforcement device for building components includes a connecting sleeve. An installation device is fixedly installed at the lower end of the connecting sleeve. A connecting device is threadedly installed at both the left and right ends of the connecting sleeve. A first prestressed tendon and a second prestressed tendon are respectively inserted and fixedly installed at opposite ends of the two connecting devices. A sealing device is threadedly installed at the upper end of the connecting sleeve.

[0007] Preferably, the connecting device includes a connector with a sealing ring fixedly installed inside. The connector has external threads engraved on its outer surface, and screw holes are provided at both its front and rear ends. A fixing bolt is installed on the right side of the front end of the connector. The connector is threaded onto the right end of the connecting sleeve. A bolt hole is provided at the front end of the first prestressing tendon, which is then fixedly installed inside the connector by the fixing bolt. Because the connector is screwed onto the connecting sleeve via its external threads, the connector can be replaced according to the size of the prestressing tendon, thus enabling the connection of different types of prestressing tendons.

[0008] Preferably, the sealing device includes a threaded rod, with three fixing posts fixedly installed on the upper part of the outer surface of the threaded rod. A rotating handle is fixedly installed on the outer surface of the three fixing posts. The threaded rod is threadedly installed in the middle of the upper end of the connecting sleeve. By aligning the threaded rod with the threaded groove and rotating the handle, the threaded rod can be easily screwed into the connecting sleeve, thereby sealing the grouting port.

[0009] Preferably, the mounting device includes a mounting base with a fixing groove at its upper end, and a set of fixing holes at both the front and rear of its upper end. The mounting base is fixedly installed at the lower end of the connecting sleeve. By fixing the mounting base in a suitable position through the fixing holes, the entire device is secured.

[0010] Preferably, the inner wall of the connecting sleeve is engraved with internal threads, and a threaded groove is opened in the middle of the upper end of the connecting sleeve. Two mounting screws are installed at both the front and rear ends of the connecting sleeve. After the connector is screwed in, the mounting screws on the connecting sleeve are screwed into the screw holes on the connector, engaging the threads to double-fix the connector and prevent it from loosening after installation.

[0011] Preferably, the fixing bolts and bolt holes are positioned in a front-to-back correspondence.

[0012] Preferably, the rotary handle is ring-shaped.

[0013] Preferably, the fixing groove is semi-circular in shape.

[0014] Preferably, the external thread and the internal thread are matched in specifications.

[0015] Preferably, the mounting screws and screw holes are positioned in a front-to-back correspondence.

[0016] Compared with the prior art, the present invention has the following beneficial effects: 1. When connecting prestressing tendons, first insert the No. 1 prestressing tendon into the connector. Then, screw the fixing bolt on the connector into the No. 1 prestressing tendon through the bolt hole to fix it. Next, screw the connector into the connecting sleeve through the external thread. After screwing the connector in, screw the mounting screw on the connecting sleeve into the screw hole on the connector. This double-fixing of the connector prevents it from loosening after installation. Similarly, the No. 2 prestressing tendon is installed on the other end of the connecting sleeve in the same way. Then, inject special high-strength cement-based grout into the connecting sleeve through the threaded groove. After the grout has solidified, connect and fix the two prestressing tendons with the grout.

[0017] 2. After grouting inside the connecting sleeve, align the threaded rod with the threaded groove, and easily screw the threaded rod into the connecting sleeve by turning the handle, thereby sealing the grouting port.

[0018] 3. The connector is screwed onto the connecting sleeve via an external thread. Therefore, the connector can be replaced according to the size of the prestressing tendon, thus enabling the connection of different types of prestressing tendons. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the overall structure of a prestressed tendon connection and reinforcement device for building components according to the present invention; Figure 2 This is a schematic diagram of the overall structure of the connection device of the prestressed tendon connection and reinforcement device for building components according to this utility model; Figure 3 This is a schematic diagram of the overall structure of the sealing device of the prestressed tendon connection and reinforcement device for building components according to this utility model; Figure 4 This is a schematic diagram of the overall structure of the installation device for the prestressed tendon connection and reinforcement device for building components according to this utility model; Figure 5 This is a schematic diagram of the overall structure of the connecting sleeve of the prestressed tendon connection and reinforcement device for building components according to this utility model.

[0020] In the diagram: 1. Connecting sleeve; 2. Connecting device; 3. Sealing device; 4. Mounting device; 5. No. 1 prestressing tendon; 6. No. 2 prestressing tendon; 20. Connecting head; 21. External thread; 22. Screw hole; 23. Fixing bolt; 24. Sealing ring; 25. Bolt hole; 30. Threaded rod; 31. Fixing post; 32. Rotating handle; 40. Mounting base; 41. Fixing hole; 42. Fixing groove; 50. Threaded groove; 51. Mounting screw; 52. Internal thread. Detailed Implementation

[0021] To make the technical means, creative features, objectives and effects of this utility model easier to understand, the present utility model will be further described below in conjunction with specific embodiments.

[0022] like Figures 1-5 As shown, a prestressed tendon connection and reinforcement device for building components includes a connecting sleeve 1. An installation device 4 is fixedly installed at the lower end of the connecting sleeve 1. A connecting device 2 is threadedly installed at both the left and right ends of the connecting sleeve 1. A first prestressed tendon 5 and a second prestressed tendon 6 are respectively inserted and fixedly installed at the opposite ends of the two connecting devices 2. A sealing device 3 is threadedly installed at the upper end of the connecting sleeve 1.

[0023] The connecting device 2 includes a connector 20, a sealing ring 24 fixedly installed inside the connector 20, and external threads 21 engraved on the outer surface of the connector 20. Screw holes 22 are opened at both the front and rear ends of the connector 20. A fixing bolt 23 is installed on the right side of the front end of the connector 20. The connector 20 is installed on the right end of the connecting sleeve 1 via the external threads 21. A bolt hole 25 is opened at the front end of the first prestressing tendon 5, and the first prestressing tendon 5 is inserted and fixedly installed inside the connector 20 via the fixing bolt 23. The fixing bolt 23 and the bolt hole 25 are positioned correspondingly. The connector 20 is tightened onto the connecting sleeve 1 via the external threads 21. Therefore, the connector 20 can be replaced according to the size of the prestressing tendon, thus enabling the connection of different types of prestressing tendons.

[0024] The sealing device 3 includes a threaded rod 30, with three fixing posts 31 fixedly mounted on the upper part of the outer surface of the threaded rod 30. A rotating handle 32 is fixedly mounted on the outer surface of the three fixing posts 31. The threaded rod 30 is threadedly installed in the middle of the upper end of the connecting sleeve 1. The rotating handle 32 is annular in shape. By aligning the threaded rod 30 with the threaded groove 50 and rotating the handle 32, the threaded rod 30 can be easily screwed into the connecting sleeve 1, thereby sealing the grouting port.

[0025] The mounting device 4 includes a mounting base 40, with a fixing groove 42 at its upper end. A set of fixing holes 41 are also provided at the front and rear of the upper end of the mounting base 40. The mounting base 40 is fixedly installed at the lower end of the connecting sleeve 1. The fixing groove 42 is semi-circular in shape. The mounting base 40 is fixed in a suitable position through the fixing holes 41, thereby fixing the entire device.

[0026] The inner wall of the connecting sleeve 1 is engraved with an internal thread 52, and a threaded groove 50 is opened in the middle of the upper end of the connecting sleeve 1. Two mounting screws 51 are installed at both the front and rear ends of the connecting sleeve 1; the external thread 21 matches the specification of the internal thread 52; the mounting screws 51 and the screw holes 22 are positioned correspondingly. After the connector 20 is screwed in, the mounting screws 51 on the connecting sleeve 1 are screwed into the screw holes 22 on the connector 20, and the threads are engaged, thereby doubly fixing the connector 20 and preventing the connector 20 from loosening after installation.

[0027] It should be noted that this utility model is a prestressed tendon connection and reinforcement device for building components. When connecting prestressed tendons, firstly, the first prestressed tendon 5 is inserted into the connector 20. Then, the fixing bolt 23 on the connector 20 is screwed into the first prestressed tendon 5 through the bolt hole 25, thereby fixing the first prestressed tendon 5. Next, the connector 20 is screwed into the connecting sleeve 1 through the external thread 21. After the connector 20 is screwed in, the mounting screw 51 on the connecting sleeve 1 is screwed into the screw hole 22 on the connector 20. By engaging the threads, the connector 20 is doubly fixed, preventing it from loosening after installation. Furthermore, the connector 20 is screwed onto the connecting sleeve 1 via the external thread 21. Therefore, the connector 20 can be replaced according to the size of the prestressing tendon, thus enabling the connection of different types of prestressing tendons. Similarly, the second prestressing tendon 6 is also installed on the other end of the connecting sleeve 1. Then, a special high-strength cement-based grout is injected into the connecting sleeve 1 through the threaded groove 50. After the grout has solidified, the two prestressing tendons are connected and fixed by the grout. After the grouting in the connecting sleeve 1 is completed, the threaded rod 30 is aligned with the threaded groove 50, and the threaded rod 30 can be easily screwed into the connecting sleeve 1 by rotating the handle 32, thereby sealing the grouting port.

[0028] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claims. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A prestressed tendon connection and reinforcement device for building components, comprising a connecting sleeve (1), characterized in that: The lower end of the connecting sleeve (1) is fixedly installed with an installation device (4), and the left and right ends of the connecting sleeve (1) are threaded with connecting devices (2). The two connecting devices (2) are respectively inserted and fixedly installed with a first prestressed tendon (5) and a second prestressed tendon (6) at opposite ends. The upper end of the connecting sleeve (1) is threaded with a sealing device (3).

2. The prestressed tendon connection and reinforcement device for building components according to claim 1, characterized in that: The connecting device (2) includes a connector (20), a sealing ring (24) is fixedly installed inside the connector (20), an external thread (21) is engraved on the outer surface of the connector (20), screw holes (22) are opened at both the front and rear ends of the connector (20), a fixing bolt (23) is installed on the right side of the front end of the connector (20), the connector (20) is installed on the right end of the connecting sleeve (1) through the external thread (21), a bolt hole (25) is opened at the front end of the first prestressing tendon (5), and the first prestressing tendon (5) is inserted and fixedly installed in the connector (20) through the fixing bolt (23).

3. The prestressed tendon connection and reinforcement device for building components according to claim 1, characterized in that: The sealing device (3) includes a threaded rod (30), three fixed posts (31) are fixedly installed on the upper part of the outer surface of the threaded rod (30), and a rotating handle (32) is fixedly installed on the outer surface of the three fixed posts (31). The threaded rod (30) is threadedly installed in the middle of the upper end of the connecting sleeve (1).

4. The prestressed tendon connection and reinforcement device for building components according to claim 1, characterized in that: The mounting device (4) includes a mounting base (40), the upper end of which has a fixing groove (42), and the front and rear parts of the upper end of the mounting base (40) each have a set of fixing holes (41). The mounting base (40) is fixedly installed on the lower end of the connecting sleeve (1).

5. The prestressed tendon connection and reinforcement device for building components according to claim 2, characterized in that: The inner wall of the connecting sleeve (1) is engraved with internal threads (52), and the middle of the upper end of the connecting sleeve (1) is provided with a threaded groove (50). Two mounting screws (51) are installed at the front and rear ends of the connecting sleeve (1).

6. The prestressed tendon connection and reinforcement device for building components according to claim 2, characterized in that: The fixing bolt (23) and the bolt hole (25) are positioned in a front-to-back correspondence.

7. The prestressed tendon connection and reinforcement device for building components according to claim 3, characterized in that: The rotary handle (32) is ring-shaped.

8. The prestressed tendon connection and reinforcement device for building components according to claim 4, characterized in that: The fixing groove (42) is semi-circular in shape.

9. A prestressed tendon connection and reinforcement device for building components according to claim 5, characterized in that: The external thread (21) is matched with the internal thread (52) in specifications.

10. A prestressed tendon connection and reinforcement device for building components according to claim 5, characterized in that: The mounting screws (51) and screw holes (22) are positioned in a front-to-back correspondence.

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