A needle threader

Abstract

The utility model relates to pre -stress construction technical field discloses a kind of machine head of threading machine, including base, including base, the horizontal tensile mechanism is separately arranged on the base along its length direction, and the steel strand clamping mechanism is arranged at each horizontal tensile mechanism end portion;When working, the steel strand clamping mechanism at different positions is alternately clamped to steel strand, and the horizontal tensile mechanism is alternately operated, and the relay conveying to steel strand is completed;The utility model can realize the efficient, stable, continuous threading operation of steel strand, and improve work efficiency.

Description

Technical Field

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

[0002] In prestressed construction of bridges, buildings, and other structures, the threading of steel strands is one of the key processes. Traditional steel strand threading is usually carried out using a single traction device, which has the following problems: existing equipment mostly uses single-point traction and lacks a relay-style collaborative operation mechanism, resulting in the inability to continuously transport the steel strands during the threading process, thus reducing threading accuracy and efficiency.

[0003] Therefore, there is an urgent need for a threading machine head that can achieve efficient, stable, and continuous feeding of steel strands, in order to solve the problem of low threading efficiency in existing technologies. Utility Model Content

[0004] The purpose of this invention is to provide a wire threading machine head that enables efficient, stable, and continuous wire threading operations, thereby improving work efficiency.

[0005] The present invention adopts the following technical solution:

[0006] A strand threading machine head includes a base, on which horizontal tensioning mechanisms are spaced apart along its length. Each horizontal tensioning mechanism has a steel strand clamping mechanism at its end. During operation, the steel strand clamping mechanisms at different positions alternately clamp the steel strands, and the horizontal tensioning mechanisms work alternately to complete the relay conveying of the steel strands.

[0007] Preferably, two horizontal tensioning mechanisms are spaced apart on the base.

[0008] Preferably, the horizontal tensioning mechanism is a hydraulic through-hole jack mounted on the base.

[0009] Preferably, the steel strand clamping mechanism includes a steel strand clamping sleeve, on which a clamping jack is provided, and a space for placing the steel strand is formed between the clamping jack and the steel strand clamping sleeve.

[0010] Preferably, the steel strand clamping sleeve is provided through at both ends, and a slot is provided at its upper part. The telescopic end of the clamping jack is provided with a clamping plate, which can be adjusted radially along the slot.

[0011] Preferably, the bottom of the steel strand clamping sleeve is provided with a sliding bracket, and the sliding bracket is in sliding contact with the base.

[0012] Preferably, the sliding bracket is provided with rollers at both ends, and the rollers slide on the base.

[0013] Preferably, the sliding bracket and the steel strand clamping sleeve are fixedly connected by bolts.

[0014] Preferably, the horizontal tensioning mechanism is equipped with a rope displacement sensor, and the rope on the rope displacement sensor is connected to the clamping jack.

[0015] Preferably, the base is a rectangular frame structure.

[0016] Compared with existing technologies, the advantages of this invention are as follows: This invention, through the alternating operation of multiple horizontal stretching mechanisms and steel strand clamping mechanisms, enables continuous relay conveying of steel strands, avoiding the intermittent pauses of traditional single-point stretching, and significantly improving threading efficiency, especially suitable for long-distance steel strand threading operations. Furthermore, the alternating operation of multiple spaced steel strand clamping mechanisms reduces the load on a single point, lowering the risk of mechanism wear; the coordinated action of alternating clamping and stretching balances the mechanism load, ensuring stability during long-term operation. Attached Figure Description

[0017] Figure 1 This is a front view of an embodiment of this application;

[0018] Figure 2 This is a side view of an embodiment of this application;

[0019] Figure 3 This is a top view of an embodiment of this application. Detailed Implementation

[0020] The present invention will now be described clearly and completely with reference to the accompanying drawings and embodiments:

[0021] like Figures 1 to 3As shown, the threading machine head of this utility model includes a base 1, which is a rectangular frame structure welded from angle steel and channel steel. Horizontal tensioning mechanisms 2 are spaced apart along the length of the base 1. Preferably, two horizontal tensioning mechanisms 2 are provided. Each horizontal tensioning mechanism 2 has a steel strand clamping mechanism at its end, used to clamp and fix the steel strand when the horizontal tensioning mechanism 2 is working. During operation, the steel strand clamping mechanism at the end clamps the steel strand, and simultaneously, the horizontal tensioning mechanism 2 at the end moves the steel strand. When the horizontal tensioning mechanism 2 moves to a set distance, the steel strand... The clamping mechanism releases its grip on the steel strand, and the horizontal tensioning mechanism 2 at the end resets. Then, the rear steel strand clamping mechanism clamps the steel strand, and the rear horizontal tensioning mechanism 2 drives the steel strand to continue moving to the set distance. Then, the clamping of the steel strand is released, the rear horizontal tensioning mechanism resets, and the front horizontal tensioning mechanism 2 starts working again. Through the alternating operation of multiple horizontal tensioning mechanisms 2 and steel strand clamping mechanisms, a continuous relay conveying of the steel strand can be formed, avoiding the intermittent pauses of traditional single-point tensioning, significantly improving the threading efficiency, and is especially suitable for long-distance steel strand threading operations.

[0022] Furthermore, the horizontal tensioning mechanism 2 is a hydraulic through-hole jack mounted on the base 1. The through-hole jack has a through hole in the center, through which the steel strand can pass directly without the need for additional guiding devices, reducing frictional resistance and improving threading efficiency. It is particularly suitable for long-distance threading, avoiding the wear or jamming problems of steel strands caused by friction in traditional traction methods.

[0023] The steel strand clamping mechanism includes a steel strand clamping sleeve 3, on which a clamping jack 4 is provided. A space for placing the steel strand is formed between the clamping jack 4 and the steel strand clamping sleeve 3. The steel strand clamping sleeve 3 is provided through at both ends and is coaxially arranged with the through-type jack to facilitate the smooth threading of the steel strand in the threading machine. A slot 5 is provided on the upper part of the steel strand clamping sleeve 3. A clamping plate 6 is provided on the telescopic end of the clamping jack 4. The clamping plate 6 can be adjusted radially along the slot 5 so that the steel strand is clamped between the clamping plate 6 and the steel strand clamping sleeve 3 as the clamping plate 6 moves downward, thus completing the positioning and fixing of the steel strand during threading.

[0024] Furthermore, a sliding bracket 7 is provided at the bottom of the steel strand clamping sleeve 3. The sliding bracket 7 is fixedly connected to the steel strand clamping sleeve 3 by bolts, and the sliding bracket 7 slides in contact with the base 1. The sliding bracket 7 can provide support and guidance for the steel strand clamping sleeve 3, ensuring the stability of the movement of the steel strand clamping sleeve 3 during operation. Preferably, rollers 8 are movably provided at both ends of the sliding bracket 7. The rollers 8 slide on the base 1, and the setting of the rollers 8 can effectively reduce the friction between the sliding bracket 7 and the base 1 during operation.

[0025] In addition, a rope displacement sensor 9 is installed on the horizontal tensioning mechanism 2. The rope on the rope displacement sensor 9 is connected to the clamping jack 4 on the steel strand clamping sleeve 3. The rope displacement sensor 9 can measure the displacement change of the horizontal tensioning mechanism 2 in real time, ensuring that the position of the steel strand is accurate and controllable during the tensioning process. It is suitable for multiple sets of horizontal tensioning mechanisms 2 to work together, preventing uneven force or deviation of the steel strand due to asynchrony.

[0026] When this utility model is in operation, the alternating operation of multiple horizontal stretching mechanisms 2 and steel strand clamping mechanisms can form a continuous relay conveying of steel strands, avoiding the intermittent pauses of traditional single-point stretching, significantly improving the threading efficiency, providing convenience for long-distance steel strand threading operations, with a simple structure, convenient operation and use, and strong practicality.

Claims

1. A threading machine head, characterized in that: The device includes a base on which horizontal tensioning mechanisms are spaced apart along its length. Each horizontal tensioning mechanism has a steel strand clamping mechanism at its end. During operation, the steel strand clamping mechanisms at different positions alternately clamp the steel strands, and the horizontal tensioning mechanisms work alternately to complete the relay delivery of the steel strands.

2. The threading machine head according to claim 1, characterized in that: The horizontal tensioning mechanism is provided in two spaced-apart configurations on the base.

3. The threading machine head according to claim 1, characterized in that: The horizontal tensioning mechanism is a hydraulic through-hole jack mounted on the base.

4. The threading machine head according to claim 3, characterized in that: The steel strand clamping mechanism includes a steel strand clamping sleeve, on which a clamping jack is provided, and a space for placing the steel strand is formed between the clamping jack and the steel strand clamping sleeve.

5. The threading machine head according to claim 4, characterized in that: The steel strand clamping sleeve is provided at both ends, and a slot is provided at the upper part. The telescopic end of the clamping jack is provided with a clamping plate, which can be adjusted radially along the slot.

6. The threading machine head according to claim 4, characterized in that: The bottom of the steel strand clamping sleeve is provided with a sliding bracket, which slides in contact with the base.

7. The threading machine head according to claim 6, characterized in that: The sliding bracket has rollers movably mounted at both ends, and the rollers slide on the base.

8. The threading machine head according to claim 6, characterized in that: The sliding bracket and the steel strand clamping sleeve are fixedly connected by bolts.

9. The threading machine head according to claim 4, characterized in that: The horizontal tensioning mechanism is equipped with a rope displacement sensor, and the rope on the rope displacement sensor is connected to the clamping jack.

10. The threading machine head according to claim 1, characterized in that: The base is a rectangular frame structure.

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