Carbon fiber plate tensioning device capable of limiting displacement of anchorage device
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- SHANGHAI HORSE CONSTR
- Filing Date
- 2025-04-01
- Publication Date
- 2026-06-12
AI Technical Summary
In existing prestressed carbon fiber tensioning devices, the anchorage and anchor seat lack connection protection measures, which may cause the anchorage to fly out when tensioning fails, threatening the safety of construction personnel.
A carbon fiber plate tensioning device including a tensioning end assembly and a fixed end assembly was designed. The device uses limit bolts to pass through a straight groove and fix them to the tensioning end anchor. The device provides a stable sliding track by combining a straight chute and a U-shaped part. The force is distributed by multiple limit bolts to limit the displacement of the anchor and prevent it from falling off in case of abnormality.
It effectively prevents anchors from flying out when tensioning fails, ensuring construction safety, ensuring linear movement and displacement control during the tensioning process, improving system reliability, and facilitating observation and maintenance.
Smart Images
Figure CN224351638U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to a carbon fiber plate tensioning device that can limit the displacement of anchorages, belonging to the field of construction engineering technology. Background Technology
[0002] Current prestressed carbon fiber tensioning devices typically include a tensioning end anchor, a fixed end anchor, and a carbon fiber plate (or cable). The two ends of the carbon fiber plate are connected to the tensioning end anchor and the fixed end anchor, respectively. The fixed end anchor is fixed to a fixed end anchor seat, and the tensioning end anchor is slidably mounted on the tensioning end anchor seat, as illustrated in Chinese patent document CN209923796U. However, this structure lacks sufficient protective measures between the anchor and the anchor seat. If a defect in the tensioning assembly leads to tensioning failure, such as a broken screw or carbon fiber plate, the anchor block may fly forward or backward, threatening the safety of the tensioning personnel. Utility Model Content
[0003] Therefore, the purpose of this utility model is to overcome the defects in the prior art and provide a carbon fiber plate tensioning device that has connection protection measures between the anchor and the anchor seat to limit the displacement of the anchor.
[0004] To achieve the above objectives, this utility model provides a carbon fiber plate tensioning device for limiting anchor displacement, comprising a tensioning end assembly, a carbon fiber plate, and a fixed end assembly. The tensioning end assembly includes a tensioning end anchor, a tensioning end anchor, a tensioning screw, and a limiting bolt. One end of the carbon fiber plate is connected to the tensioning end anchor, and one end of the tensioning screw is connected to the tensioning end anchor. The other end passes through the tensioning end anchor and is screwed with a fastening nut. A straight groove parallel to the extension direction of the carbon fiber plate is formed on the tensioning end anchor. The limiting bolt passes through the straight groove and is fixedly connected to the tensioning end anchor. The two ends of the straight groove can limit the stroke of the limiting bolt.
[0005] A straight groove is provided on the tensioning end anchor, and the tensioning end anchor is located in the straight groove.
[0006] The tensioning end anchor includes a U-shaped part and two wings located at both ends of the U-shaped part. The wings are used to fix to the building surface by fixing bolts, and a straight groove is formed on the inner side of the U-shaped part.
[0007] The straight groove is formed on the bottom wall of the U-shaped part. There are multiple limiting bolts.
[0008] The limiting bolt is a bolt that is screwed into the screw hole on the tensioning end anchor.
[0009] The bolt includes a shank and a cap, and there is a gap between the cap and the tensioning end anchor.
[0010] The tensioning end anchor also includes a block portion located at one end of the U-shaped portion, and the tensioning screw passes through the block portion and is screwed to the fastening nut.
[0011] The fixed end assembly includes a fixed end anchor and a fixed end anchor, one end of the carbon fiber plate is connected to the fixed end anchor, and the fixed end anchor is fixed to the fixed end anchor.
[0012] By adopting the above technical solution, the carbon fiber plate tensioning device of this utility model, which can limit the displacement of anchorages, has the following beneficial effects compared with the prior art:
[0013] 1. By passing the limiting bolt through the straight channel and fixing it to the anchor at the tensioning end, the anchor and the anchor seat are physically connected. Even if the screw breaks or the carbon fiber plate fails, the stroke of the limiting bolt at both ends of the straight channel can be limited to prevent the anchor from flying out uncontrollably, thus fundamentally eliminating the risk of anchor ejection and ensuring the safety of construction personnel.
[0014] 2. The tensioning end anchor slides along a straight groove to ensure linear movement during the tensioning process and avoid deviation or jamming; combined with the stroke limitation of the limit bolt, the maximum displacement range of the tensioning end anchor can be precisely controlled to prevent overtravel operation.
[0015] 3. The U-shaped section provides a stable sliding track, and the wings are tightly connected to the building through fixing bolts, which enhances the overall anti-overturning capacity of the anchor and reduces the risk of anchor loosening caused by external vibration.
[0016] 4. Multiple limit bolts are used to distribute the force. Even if a single limit bolt fails, the remaining bolts can still provide protection, significantly improving the reliability of the system. The gap design between the bolt head and the anchor seat allows for normal sliding, while preventing it from falling off in case of abnormality.
[0017] 5. The exposed design of the straight groove and limit bolt facilitates the observation of the anchor displacement during construction and timely detection of abnormalities; the bolt connection also facilitates later maintenance or replacement of components. Attached Figure Description
[0018] Figure 1 is a schematic diagram of the structure of this utility model.
[0019] Figure 2 is a schematic diagram of Figure 1 from another angle.
[0020] Figure 3 is an exploded view of the tensioning end component.
[0021] Figure 4 is a cross-sectional view of the tensioning end component. Detailed Implementation
[0022] The present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.
[0023] As shown in Figures 1-4, the present invention provides a carbon fiber plate tensioning device for limiting anchor displacement, comprising a tensioning end assembly 1, a carbon fiber plate 2, and a fixing end assembly 3.
[0024] The fixed end assembly 3 includes a fixed end anchor 31 and a fixed end anchor 32. One end of the carbon fiber plate 2 is connected to the fixed end anchor 32, and the fixed end anchor 32 is fixed to the fixed end anchor 31.
[0025] The tensioning end assembly 1 includes a tensioning end anchor 11, a tensioning end anchor 12, a tensioning screw 13, and a limiting bolt 14. The end of the carbon fiber plate 2 away from the fixed end anchor 32 is connected to the tensioning end anchor 12.
[0026] The tensioning end anchor 11 includes a U-shaped portion 111 and two wings 112 located at both ends of the U-shaped portion 111. The wings 112 are used to fix to the building surface by fixing bolts. A straight groove is formed on the inner side of the U-shaped portion 111, and the tensioning end anchor 12 is located in the straight groove.
[0027] The tensioning end anchor 11 also includes a block portion 113, which is located at one end of the U-shaped portion 111. One end of the tensioning screw 13 is connected to the tensioning end anchor 12, and the other end passes through the block portion 113 and is screwed to the fastening nut 15.
[0028] A straight groove 111a parallel to the extending direction of the carbon fiber plate 2 is formed on the tensioning end anchor 11. In this embodiment, the straight groove 111a is formed on the bottom wall of the U-shaped part 111. There can be one or more limiting bolts 14, and the limiting bolts 14 pass through the straight groove 111a and are fixedly connected to the tensioning end anchor 12. The two ends of the straight groove 111a can limit the stroke of the limiting bolts 14.
[0029] The limiting bolt 14 is a bolt that is screwed into the threaded hole on the tensioning end anchor 12. The bolt includes a shank 142 and a cap 141. The cap 141 has a gap 100 with the tensioning end anchor 11, so that the bolt can avoid obstructing the tensioning process when the prestressing is tensioned by the jack.
[0030] Obviously, the above embodiments are merely illustrative examples for clear explanation and are not intended to limit the implementation. Those skilled in the art will recognize that other variations or modifications can be made based on the above description. It is neither necessary nor possible to exhaustively list all possible implementations here. However, obvious variations or modifications derived therefrom are still within the protection scope of this invention.
Claims
1. A carbon fiber plate tensioning device capable of limiting displacement of an anchor, characterized by: The device includes a tensioning end assembly, a carbon fiber plate, and a fixing end assembly. The tensioning end assembly includes a tensioning end anchor, a tensioning end anchor, a tensioning screw, and a limiting bolt. One end of the carbon fiber plate is connected to the tensioning end anchor, and one end of the tensioning screw is connected to the tensioning end anchor. The other end passes through the tensioning end anchor and is screwed with a fastening nut. A straight groove parallel to the extension direction of the carbon fiber plate is formed on the tensioning end anchor. The limiting bolt passes through the straight groove and is fixedly connected to the tensioning end anchor. The two ends of the straight groove can limit the stroke of the limiting bolt.
2. The carbon fiber plate tensioning device for limiting anchor displacement as described in claim 1, characterized in that: A straight groove is provided on the tensioning end anchor, and the tensioning end anchor is located in the straight groove.
3. The carbon fiber plate tensioning device for limiting anchor displacement as described in claim 2, characterized in that: The tensioning end anchor includes a U-shaped part and two wings located at both ends of the U-shaped part. The wings are used to fix to the building surface by fixing bolts, and a straight groove is formed on the inner side of the U-shaped part.
4. The carbon fiber plate tensioning device for limiting anchor displacement as described in claim 3, characterized in that: The straight groove is formed on the bottom wall of the U-shaped part.
5. The carbon fiber plate tensioning device for limiting anchor displacement as described in claim 3, characterized in that: The tensioning end anchor also includes a block portion, which is located at one end of the U-shaped portion. The tensioning screw passes through the block portion and is screwed to the fastening nut.
6. The carbon fiber plate tensioning device for limiting anchor displacement as described in any one of claims 1-4, characterized in that: There are multiple limiting bolts.
7. The carbon fiber plate tensioning device for limiting anchor displacement as described in any one of claims 1-4, characterized in that: The limiting bolt is a bolt that is screwed into the threaded hole on the tensioning end anchor.
8. The carbon fiber plate tensioning device for limiting anchor displacement as described in claim 7, characterized in that: The bolt includes a shank and a cap, and there is a gap between the cap and the tensioning end anchor.
9. The carbon fiber plate tensioning device for limiting anchor displacement as described in any one of claims 1-4, characterized in that: The fixed end assembly includes a fixed end anchor and a fixed end anchor, one end of the carbon fiber plate is connected to the fixed end anchor, and the fixed end anchor is fixed to the fixed end anchor.