Novel steel strand direct connection tensioning component

Abstract

The utility model provides a novel steel strand direct connection tensioning member, which relates to the field of connecting members and comprises a connecting shaft and two opposite connecting sleeves, the two connecting sleeves are respectively in threaded connection with two ends of the connecting shaft, and tensile through grooves are arranged on the inner sides of the two connecting sleeves. The end, away from the connecting shaft, of the tensile through groove inclines towards the end of the connecting sleeve, a clamping block with the telescopic end is arranged in the tensile through groove, two independent clamping heads are arranged at one end of the clamping block, a connecting groove for a steel strand to penetrate through is formed in the middle of each clamping head, and the outer surfaces of the two clamping heads are matched with the inclined face of the tensile through groove. During disassembly, the connecting sleeve is rotated to be separated from the connecting shaft, then the clamping block can be pulled out from one end of the connecting sleeve due to the fact that the connecting shaft loses extrusion, and the steel strand loses clamping force along with the fact that the two clamping heads are away from the tensile through groove and are separated from each other; and the steel strand and the clamping block can be conveniently disassembled to a certain extent.

Description

Technical Field

[0001] The utility model relates to the field of connecting components, in particular to a novel steel strand directly connected tensioning component. Background Art

[0002] In prestressed concrete structures, when the prestressed concrete project is too long, tensioning the prestressed steel strands at the concrete ends will cause a large prestress loss. It is necessary to use prestressed steel strand connectors to tension the prestressed steel strands in sections to reduce the prestress loss of the prestressed concrete project.

[0003] At present, the common method for prestressing ordinary steel bars in the prior art is linear tensioning, that is, tensioning the two ends of the prestressed tendons of the component. The publication number CN216405131U discloses a tensioning steel strand fixed end, including a steel strand body and an anchor matched with the steel strand body, a connection cover is fixedly installed on the side of the anchor, and the outer surface of the connection cover is sleeved with spiral tendons, a corrugated tube is arranged on the side of the connection cover, and the steel strand body passes through the anchor, the connection cover and the corrugated tube from left to right in sequence, and a through hole is opened on the side of the anchor for the steel wire in the steel strand body to pass through. In the actual installation process of the tensioning steel strand fixed end, when the clamp is installed, the clamp enters the through hole on the anchor and squeezes the positioning column into the concave groove. When the positioning column coincides with the columnar positioning groove on the clamp, the positioning column can be inserted into the columnar positioning groove under the action of a strong spring to realize the positioning of the clamp, but this method is inconvenient when disassembling between the steel strand and the clamp.

[0004] Therefore, it is necessary to provide a new type of steel strand direct-connected tension member to solve the above technical problems. Utility Model Content

[0005] In order to solve the above technical problems, the utility model provides a novel steel strand direct-connected tensioning member.

[0006] The novel steel strand direct-connected tensioning member provided by the utility model comprises a connecting shaft and two opposite connecting sleeves, the two connecting sleeves are respectively threadedly connected to the two ends of the connecting shaft, and the inner sides of the two connecting sleeves are provided with tension-resistant through grooves;

[0007] The end of the anti-pull groove away from the connecting shaft is inclined toward the end of the connecting sleeve. A clamping block with a retractable end is provided in the anti-pull groove. Two independent clamps are provided at one end of the clamping block. A connecting groove for the steel strand to pass through is opened in the middle of the two clamps. The outer surfaces of the two clamps are matched with the inclined surfaces of the anti-pull groove respectively, and the two clamps can be retracted against each other.

[0008] Furthermore, the clamping block includes an anchor plate and two opposite elastic members, the outer side of the anchor plate fits with the end of the connecting shaft, one end of the two elastic members is fixedly connected to one end of the two clamps respectively, and the other end of the two elastic members is fixedly connected to the inner side of the anchor plate respectively.

[0009] Furthermore, the connecting shaft includes an integrally machined fixing block and two threaded columns, the two threaded columns are respectively located at both ends of the fixing block, and the two threaded columns are external threads, and the two threaded columns are respectively threadedly matched with the inner side wall threads of the two connecting sleeves.

[0010] Furthermore, the elastic member is a compression spring, and two ends of the compression spring are respectively welded to the clamp and the anchor plate.

[0011] Furthermore, a groove for fixing the end of the steel strand is provided on the inner side of the anchor plate.

[0012] Furthermore, the three points of the anti-tensioning groove, the connecting groove and the groove are collinear.

[0013] Compared with the related art, the new steel strand direct-connected tension member provided by the utility model has the following advantages:

[0014] Beneficial effects:

[0015] 1. By rotating the connecting shaft to make it fit with the connecting sleeve thread, the clamp block will be squeezed to move inside the tensile groove while screwing in, so that the clamp head fits on the inclined surface of the tensile groove. At this time, the two clamp heads are retracted to each other and clamp the steel strand. Since the end of the tensile groove away from the connecting shaft is inclined toward the end of the connecting sleeve, when the steel strand is pulled outward, the two clamp heads are retracted inward along the inclined surface of the tensile groove, which will increase the squeezing force on the steel strand and further improve the fixing effect of the steel strand.

[0016] 2. During disassembly, rotate the connecting sleeve to disengage it from the connecting shaft. After that, the clamp block can be pulled out from one end of the connecting sleeve because it loses the squeezing of the connecting shaft. As the two clamps move away from the tensile groove, the two clamps separate from each other, and the steel strand loses its clamping force, which facilitates the disassembly of the steel strand and the clamp block to a certain extent. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 A schematic cross-sectional view of a novel steel strand directly connected tension member provided by the utility model;

[0018] Figure 2 A schematic diagram of the split structure of the novel steel strand direct-connected tension member provided by the utility model;

[0019] Figure 3 for Figure 2Schematic diagram of the enlarged structure of A shown.

[0020] Numbers in the figure: 1, connecting sleeve; 2, tensile groove; 3, chuck; 4, connecting groove; 5, anchor plate; 6, elastic part; 7, fixing block; 8, threaded column; 9, groove. DETAILED DESCRIPTION

[0021] The utility model is further described below in conjunction with the accompanying drawings and implementation modes.

[0022] Please refer to Figure 1 , Figure 2 as well as Figure 3 ,in, Figure 1 A schematic cross-sectional view of a novel steel strand directly connected tension member provided by the utility model; Figure 2 A schematic diagram of the split structure of the novel steel strand direct-connected tension member provided by the utility model; Figure 3 for Figure 2 Schematic diagram of the enlarged structure of A shown.

[0023] In the specific implementation process, Figure 1-Figure 3 As shown, the novel steel strand direct-connected tensioning member comprises a connecting shaft and two opposite connecting sleeves 1, the two connecting sleeves 1 are respectively threadedly connected to the two ends of the connecting shaft, and the inner sides of the two connecting sleeves 1 are provided with anti-tensioning grooves 2, and the anti-tensioning grooves 2 are inclined toward the end of the connecting sleeve 1 away from the end of the connecting shaft, and a clamping block with a retractable end is provided in the anti-tensioning groove 2, and two independent clamps 3 are provided at one end of the clamping block, and a connecting groove 4 for the steel strand to pass through is provided in the middle of the two clamps 3, and the outer surfaces of the two clamps 3 are respectively matched with the inclined surfaces of the anti-tensioning grooves 2, and the two clamps 3 can be retracted to each other, and the clamping block comprises an anchor plate 5 and two opposite elastic members 6, the outer side of the anchor plate 5 is fitted with the end of the connecting shaft, one end of the two elastic members 6 is respectively fixedly connected to one end of the two clamps 3, and the other ends of the two elastic members 6 are respectively fixed to the inner side of the anchor plate 5 The fixed connection is made by passing the steel strand through the anti-tensile groove 2 and the connecting groove 4 in turn and extending them into the groove 9. By rotating the connecting shaft to make it threadably matched with the connecting sleeve 1, the threaded column 8 is screwed into the connecting sleeve 1, and the threaded column 8 will squeeze the anchor plate 5 to move toward the inside of the anti-tensile groove 2 while being screwed in. With the squeezing of the compression spring, the clamp 3 is fitted on the inclined surface of the anti-tensile groove 2. At this time, the two clamps 3 are retracted against each other and clamp the steel strand. Since the end of the anti-tensile groove 2 away from the connecting shaft is inclined toward the end of the connecting sleeve 1, when the steel strand is pulled outward, the two clamps 3 are retracted inward along the inclined surface of the anti-tensile groove 2. A groove 9 for fixing the end of the steel strand is also provided on the inner side of the anchor plate 5. The three-point colinear elastic member 6 of the anti-tensile groove 2, the connecting groove 4 and the groove 9 is a compression spring, and the two ends of the compression spring are respectively welded to the clamp 3 and the anchor plate 5.

[0024] The connecting shaft includes an integrally machined fixing block 7 and two threaded columns 8, the two threaded columns 8 are respectively located at both ends of the fixing block 7, and the two threaded columns 8 are external threads, and the two threaded columns 8 are respectively matched with the inner wall threads of the two connecting sleeves 1.

[0025] The working principle of the utility model is as follows: when the component is used, the steel strand is sequentially passed through the tensile groove 2 and the connecting groove 4 and extended into the groove 9, and the connecting shaft is rotated to make it threadedly matched with the connecting sleeve 1, and the threaded column 8 is screwed into the connecting sleeve 1, and the threaded column 8 squeezes the anchor plate 5 to move inside the tensile groove 2 while being screwed in, and the clamp 3 is pressed against the inclined surface of the tensile groove 2 with the compression of the compression spring, and at this time, the two clamps 3 are retracted to each other and clamp the steel strand, because the tensile groove 2 is far away from the connecting shaft One end of the steel strand is inclined toward the end of the connecting sleeve 1, so that when the steel strand is pulled outward, the two clamps 3 are retracted inward along the inclined surface of the tensile groove 2, which will increase the extrusion force on the steel strand. One end of the steel strand is against the groove 9, making it difficult for the steel strand to loosen. During disassembly, the connecting sleeve 1 is rotated to separate it from the connecting shaft. After that, the anchor plate 5 can be pulled out from one end of the connecting sleeve 1 due to the loss of extrusion from the connecting shaft. As the two clamps 3 move away from the tensile groove 2, the two clamps 3 separate from each other, the steel strand loses its clamping force and can be taken out.

[0026] The above description is only an embodiment of the present invention, and does not limit the patent scope of the present invention. Any equivalent structure or equivalent process transformation made by using the contents of the specification and drawings of the present invention, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present invention.

Claims

1. A new type of steel strand direct-connected tension member, characterized in that: It comprises a connecting shaft and two opposite connecting sleeves (1), wherein the two connecting sleeves (1) are respectively threadedly connected to two ends of the connecting shaft, and the inner sides of the two connecting sleeves (1) are provided with anti-tensioning grooves (2); The end of the tensile-resistant groove (2) away from the connecting shaft is inclined toward the end of the connecting sleeve (1), and a clamping block with a retractable end is provided in the tensile-resistant groove (2), and two independent clamps (3) are provided at one end of the clamping block. A connecting groove (4) for the steel strand to pass through is provided in the middle of the two clamps (3), and the outer surfaces of the two clamps (3) are respectively matched with the inclined surfaces of the tensile-resistant groove (2), and the two clamps (3) can be retracted into each other.

2. The novel steel strand direct-connected tension member according to claim 1 is characterized in that: The clamping block comprises an anchor plate (5) and two opposite elastic members (6), the outer side of the anchor plate (5) is fitted with the end of the connecting shaft, one end of the two elastic members (6) is fixedly connected to one end of the two clamps (3), and the other end of the two elastic members (6) is fixedly connected to the inner side of the anchor plate (5).

3. The novel steel strand direct-connected tension member according to claim 2 is characterized in that: The connecting shaft comprises a fixed block (7) and two threaded columns (8) which are integrally machined. The two threaded columns (8) are respectively located at two ends of the fixed block (7), and the two threaded columns (8) are external threads. The two threaded columns (8) are respectively threadedly matched with the inner wall threads of the two connecting sleeves (1).

4. The novel steel strand direct-connected tension member according to claim 3 is characterized in that: The elastic member (6) is a compression spring, and two ends of the compression spring are respectively welded to the clamp (3) and the anchor plate (5).

5. The novel steel strand direct-connected tension member according to claim 4 is characterized in that: The inner side of the anchor plate (5) is also provided with a groove (9) for fixing the end of the steel strand.

6. The novel steel strand direct-connected tension member according to claim 5 is characterized in that: The three points of the anti-tension groove (2), the connecting groove (4) and the groove (9) are collinear.

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