A wire threading machine for steel strand installation

Abstract

This utility model relates to the field of prestressed construction technology and discloses a strand threading machine for steel strand threading, including a frame. Multiple conveying rollers driven by a power mechanism are spaced horizontally at the ends of the frame. A limiting pressure roller is provided above the conveying rollers, and the height of the limiting pressure roller is adjustable. A space for threading steel strands is formed between the limiting pressure roller and the conveying roller. This utility model can flexibly adjust the conveying spacing, thereby meeting the threading needs of steel strands of different diameters, expanding its applicability. It has a simple structure, is easy to operate, and is highly practical.

Description

Technical Field

[0001] This utility model relates to the field of prestressed construction technology, and in particular to a strand threading machine for threading steel strands. Background Technology

[0002] Existing steel strand threading machines typically employ a fixed-gap conveyor roller structure, with the spacing between the rollers being non-adjustable, resulting in poor adaptability. Since the diameters of steel strands used in different projects can vary significantly (e.g., Φ12mm, Φ15mm, Φ17mm, etc.), the fixed roller spacing of traditional threading machines makes it difficult to achieve stable and effective clamping and conveying of steel strands of different diameters. Excessive spacing may cause thinner steel strands to slip or deviate, while insufficient spacing may obstruct the smooth passage of thicker steel strands, even causing equipment jamming or surface damage to the steel strands. Furthermore, while some threading machines employ clamping mechanisms, they lack flexible height adjustment capabilities, failing to meet the threading requirements of steel strands of different diameters, thus affecting construction efficiency and quality. Therefore, there is an urgent need for a threading machine capable of adjusting the conveyor spacing to improve compatibility with steel strands of different specifications. Utility Model Content

[0003] The purpose of this utility model is to provide a wire threading machine for steel strands, which can flexibly adjust the conveying spacing to meet the needs of wire threading steel strands of different diameters, thus expanding its application range. It has a simple structure, is easy to operate and use, and is highly practical.

[0004] The present invention adopts the following technical solution:

[0005] A steel strand threading machine includes a frame, with multiple conveying rollers driven by a power mechanism spaced at horizontal intervals at the end of the frame; a limiting pressure roller is provided above the conveying rollers, the height of the limiting pressure roller is adjustable, and a space for threading steel strands is formed between the limiting pressure roller and the conveying roller.

[0006] Preferably, the frame is provided with a support frame, the support frame is provided with a hydraulic cylinder, the telescopic end of the hydraulic cylinder is provided with a mounting plate, and the limiting pressure roller is rotatably disposed at the bottom of the mounting plate.

[0007] Preferably, both ends of the support frame are provided with limit plates, and the mounting plate slides in contact with the limit plates.

[0008] Preferably, the support frame and the machine frame are detachably connected by bolts.

[0009] Preferably, there are two hydraulic cylinders arranged symmetrically.

[0010] Preferably, the number of the limiting pressure rollers matches the number of the conveying rollers.

[0011] Preferably, the power mechanism includes a drive motor mounted on the frame, a drive gear mounted on the shaft of the drive motor, a driven gear meshing with a driven gear, and the driven gear meshing with a follower gear mounted on the conveyor roller.

[0012] Preferably, a guide roller is rotatably provided at the end of the frame away from the conveying roller.

[0013] Preferably, a guide cylinder is provided on the frame between the guide roller and the conveying roller.

[0014] Compared with existing technologies, the advantages of this invention are as follows: This invention, through its adjustable-height limiting pressure roller design, can dynamically adjust the distance between the limiting pressure roller and the conveying roller, thereby adapting to steel strands of different diameters. By adjusting the distance, it ensures that the steel strand remains stably centered during installation, preventing deviation or jamming. Furthermore, the horizontally spaced arrangement of multiple conveying rollers in this invention forms a collaborative propulsion mechanism, significantly improving the efficiency of steel strand installation. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the structure of an embodiment of this application;

[0016] Figure 2 This is a front view of an embodiment of this application;

[0017] Figure 3 This is a bottom view of an embodiment of this application. Detailed Implementation

[0018] The present invention will now be described clearly and completely with reference to the accompanying drawings and embodiments:

[0019] like Figures 1 to 3 As shown, the present invention discloses a steel strand threading machine, comprising a frame 1, with multiple conveying rollers 2 driven by power mechanisms spaced horizontally at one end of the frame 1; a limiting pressure roller 3 is arranged above the conveying rollers 2, the number of limiting pressure rollers 3 preferably matching the number of conveying rollers 2, to ensure that the steel strand remains stably centered during threading, avoiding deviation or jamming; the height of the limiting pressure roller 3 is adjustable, and a space for threading the steel strand is formed between the limiting pressure roller 3 and the conveying rollers 2. The present invention, through the design of the adjustable-height limiting pressure roller 3, can dynamically adjust the distance between the limiting pressure roller 3 and the conveying roller 2, thereby adapting to steel strands of different diameters, expanding the scope of application, and enhancing the flexibility of the threading machine.

[0020] The frame 1 is equipped with a support frame 4, and the support frame 4 is equipped with two hydraulic cylinders 5. Two hydraulic cylinders 5 are symmetrically arranged, and the telescopic end of each hydraulic cylinder 5 is connected to a mounting plate 6. A limiting roller 3 is rotatably mounted at the bottom of the mounting plate 6. During operation, the extension and retraction of the hydraulic cylinders 5 drives the mounting plate 6 to move up and down, thereby adjusting the distance between the limiting roller 3 and the conveying roller 2. Furthermore, limiting plates 7 are provided on both sides of each end of the support frame 4. The mounting plate 6 slides in contact with the limiting plates 7, which provide limiting guidance for the up and down movement of the mounting plate 6 and also prevent horizontal swaying during the steel strand conveying process, ensuring the stability of the mounting plate 6. In this embodiment, the support frame 4 and the frame 1 are preferably connected by detachable bolts to facilitate subsequent targeted inspection and maintenance, reduce maintenance costs, and improve operational convenience.

[0021] Furthermore, in this embodiment, the power mechanism includes a drive motor 8 mounted on the frame 1, a drive gear 9 mounted on the shaft of the drive motor 8, driven gears 10 meshing on both sides of the drive gear 9, and each driven gear 10 meshing with a follower gear 11 mounted on the conveyor roller 2; in this embodiment, four conveyor rollers 2 are provided, and each driven gear 10 meshes with the follower gears 11 on the corresponding two conveyor rollers 2.

[0022] A guide roller 12 is rotatably mounted on the end of the frame 1 away from the conveyor roller 2. This guide roller provides support during the conveying of the steel strand to the conveyor roller 2, reducing wear on the steel strand and the frame 1. Additionally, a guide cylinder 13 is mounted on the frame 1 between the guide roller 12 and the conveyor roller 2. The guide cylinder 13 further ensures that the steel strand remains stable and centered during threading, preventing deviation or jamming.

[0023] In use, the steel strand passes over the guide roller 12 and through the guide cylinder 13 to be conveyed between the limit roller 3 and the conveying roller 2. The distance between the limit roller 3 and the conveying roller 2 is adjusted according to the diameter of the steel strand, and then the drive motor 8 is turned on to convey the steel strand.

Claims

1. A wire threading machine for steel strand installation, characterized in that: The device includes a frame, with multiple conveying rollers driven by a power mechanism spaced at horizontal intervals at the ends of the frame; a limiting pressure roller is provided above the conveying rollers, the height of the limiting pressure roller is adjustable, and a space is formed between the limiting pressure roller and the conveying roller for the steel strand to pass through.

2. The strand threading machine according to claim 1, characterized in that: The frame is equipped with a support frame, the support frame is equipped with a hydraulic cylinder, the telescopic end of the hydraulic cylinder is equipped with a mounting plate, and the limiting pressure roller is rotatably mounted at the bottom of the mounting plate.

3. The strand threading machine according to claim 2, characterized in that: Both ends of the support frame are provided with limit plates, and the mounting plate slides in contact with the limit plates.

4. The strand threading machine according to claim 2, characterized in that: The support frame and the machine frame are detachably connected by bolts.

5. The strand threading machine according to claim 2, characterized in that: The oil cylinders are arranged symmetrically in two places.

6. The strand threading machine according to claim 1, characterized in that: The number of the limiting pressure rollers is matched with the number of the conveying rollers.

7. The strand threading machine according to claim 1, characterized in that: The power mechanism includes a drive motor mounted on the frame, a drive gear mounted on the shaft of the drive motor, a driven gear meshing with a driven gear, and the driven gear meshing with a follower gear mounted on the conveyor roller.

8. The strand threading machine according to claim 1, characterized in that: A guide roller is rotatably mounted at the end of the frame away from the conveying roller.

9. The strand threading machine according to claim 8, characterized in that: A guide cylinder is provided on the frame between the guide roller and the conveying roller.

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