Prestressed steel strand anti-floating anchor cable

Abstract

According to the technical scheme, the prestress steel strand anti-floating anchor cable is characterized in that the prestress steel strand anti-floating anchor cable comprises a grouting hose, a steel strand, a positioning assembly, a moving assembly and a driving assembly, the positioning assembly is connected with the moving assembly, the steel strand is connected with the positioning assembly, the positioning assembly comprises a first positioning piece, and the moving assembly comprises a second positioning piece; the first positioning piece and the second positioning piece are close to each other to form a protrusion, so that the contact area with soil is increased, and the purpose of fixing a steel strand in an area with soft soil is achieved. And during mounting, the first positioning sheet and the second positioning sheet are far away from each other and are nearly parallel, so that the steel strand can be smoothly inserted into the hole.

Description

Technical Field

[0001] This utility model relates to anti-buoyancy anchor cables, and more specifically, to prestressed steel strand anti-buoyancy anchor cables. Background Technology

[0002] Prestressed steel strand anti-buoyancy anchors are a type of reinforcement method that enhances the structural stability and load-bearing capacity of buildings by applying prestress. Primarily composed of prestressed steel strands as the main load-bearing component, they possess high strength and low relaxation properties, enabling them to withstand significant tensile forces. The working principle of prestressed steel strand anti-buoyancy anchors is to utilize the prestress of the steel strands to firmly connect the building to the foundation, thereby resisting buoyancy caused by external factors such as groundwater. When the building is subjected to buoyancy, the prestressed steel strands utilize their high strength characteristics to transfer the buoyancy to stable strata, ensuring the stability and safety of the building. However, in practical applications, it has been found that in areas with relatively soft soil, the raised supports on the steel strands cannot provide the necessary fixation. During grouting, the grout can cause the steel strands to move upwards, and the raised supports can pass through the soft soil. Therefore, a prestressed steel strand anti-buoyancy anchor is needed, a device that can fix the steel strands in areas with relatively soft soil.

[0003] For the reasons mentioned above, how to fix the steel strands in areas with relatively loose soil is the problem that this application addresses. Utility Model Content

[0004] To address the shortcomings of existing technologies, a prestressed steel strand anti-buoyancy anchor cable is provided, which can fix steel strands in areas with relatively soft soil.

[0005] To achieve the above objectives, the following technical solution is provided: a prestressed steel strand anti-buoyancy anchor cable, comprising a grouting hose, steel strands, a positioning component, a moving component, and a driving component. The positioning component is connected to the moving component, and the steel strands are connected to the positioning component. The positioning component includes a first positioning piece, and the moving component includes a second positioning piece. The first positioning piece and the second positioning piece are rotatably connected, and the driving component is used to drive the moving component to move.

[0006] As the moving component moves toward the positioning component, the first positioning piece moves toward the second positioning piece.

[0007] In summary, the above technical solution has the following beneficial effects: In the prior art, the protruding support set on the steel strand can serve as a medium to isolate the grouting hose from the soil layer. When the steel strand and grouting hose enter the hole, the protruding support can prevent stones or other objects in the soil from scratching or squeezing the grouting hose, thus preventing the inability to grout normally from the bottom. At the beginning of grouting, the grouting hose is continuously pulled up during the grouting process, thereby grouting evenly. The steel strand needs to remain in a fixed position at all times, but the flow of grout will drive the steel strand to move and will also generate buoyancy to make the steel strand move upward. Therefore, after the protruding support rotates, it will come into contact with the soil in the horizontal direction, and can provide downward support by resisting the soil layer, so that the position of the steel strand in the hole remains relatively stable.

[0008] However, in areas with relatively loose soil, the raised support will pass directly through the soil due to its small contact area. Increasing the contact area directly would make it difficult for the raised support to move in the hole. This invention solves this problem by using a first and second positioning piece that can move relatively. During the insertion of the steel strand into the hole, the positioning component and the moving component maintain a minimum overlap area. At this time, the first and second positioning pieces tend to be parallel, so they can be inserted into the hole smoothly. After the steel strand reaches the predetermined position, the driving component is pulled out of the hole first. During this process, the driving component will drive the moving component to move towards the positioning component, so that the first and second positioning pieces gradually approach each other. However, since the first and second positioning pieces are rotatably connected, they will gradually form a raised shape, which significantly increases the contact area with the soil in the horizontal direction and can also embed into the soil. Since the position of the positioning component is fixed, the first positioning piece will compact the soil above it during rotation, forming a groove under the second positioning piece to facilitate the entry of slurry and make it more stable after the slurry solidifies.

[0009] In addition, the steel strand, positioning component and moving component can be rotated around the grouting hose as the rotation center during the moving drive component process. This allows the protrusions formed by the first positioning plate and the second positioning plate to make good contact with the soil layer, thereby fixing the steel strand in areas with relatively loose soil.

[0010] This invention increases the contact area with the soil by forming a protrusion through the proximity of the first and second positioning plates, thereby achieving the purpose of fixing the steel strand in areas with relatively loose soil. Furthermore, during installation, the first and second positioning plates are far apart from each other and nearly parallel, allowing the steel strand to be smoothly inserted into the hole. Attached Figure Description

[0011] Figure 1 A three-dimensional structural diagram of a prestressed steel strand anti-buoyancy anchor cable;

[0012] Figure 2This is a cross-sectional view of the present invention.

[0013] Reference numerals: 1. Grouting hose; 2. Steel strand; 3. Positioning assembly; 4. Moving assembly; 5. Drive assembly;

[0014] 31. First positioning piece; 32. Fixing tube; 33. Lower abutment ring; 34. Upper abutment ring; 35. Elastic limiting ring;

[0015] 41. Second positioning piece; 42. Moving tube; 43. Outer elastic ring; 44. Inner elastic ring;

[0016] 51. Drive ring; 52. Rope. Detailed Implementation

[0017] The present invention will be further described in detail below with reference to the accompanying drawings and embodiments. Identical components are indicated by the same reference numerals. It should be noted that the terms "front," "rear," "left," "right," "upper," and "lower" used in the following description refer to directions in the accompanying drawings, and the terms "bottom surface," "top surface," "inner," and "outer" refer to directions toward or away from the geometric center of a specific component, respectively.

[0018] Reference Figure 1-2 As shown, the prestressed steel strand anti-buoyancy anchor cable includes a grouting hose 1, a steel strand 2, a positioning component 3, a moving component 4, and a driving component 5. The positioning component 3 is connected to the moving component 4, and the steel strand 2 is connected to the positioning component 3. The positioning component 3 includes a first positioning piece 31, and the moving component 4 includes a second positioning piece 41. The first positioning piece 31 and the second positioning piece 41 are rotatably connected. The driving component 5 is used to drive the moving component 4 to move.

[0019] When the moving component 4 moves toward the positioning component 3, the first positioning piece 31 moves toward the second positioning piece 41.

[0020] In the prior art, the protruding support on the steel strand 2 can serve as a medium to isolate the grouting hose 1 from the soil layer. When the steel strand 2 and the grouting hose 1 enter the hole, the protruding support can prevent stones or other objects in the soil from scratching or squeezing the grouting hose 1, thus preventing the inability to grout normally from the bottom. When grouting begins, the grouting hose 1 is continuously pulled up during the grouting process, thereby grouting evenly. The steel strand 2 needs to remain in a fixed position at all times. However, the flow of grout will drive the steel strand 2 to move and will also generate buoyancy to move the steel strand 2 upward. Therefore, after the protruding support rotates, it will come into contact with the soil in the horizontal direction. It can provide downward support by resisting the soil layer, so that the position of the steel strand 2 in the hole remains relatively stable.

[0021] However, in areas with relatively loose soil, the raised support, due to its small contact area, will pass directly through the soil. Increasing the contact area directly would make it difficult for the raised support to move within the hole. This invention solves this problem by using a relatively movable first positioning piece 31 and a second positioning piece 41. During the insertion of the steel strand 2 into the hole, the positioning component 3 and the moving component 4 maintain a minimum overlap. At this time, the first positioning piece 31 and the second positioning piece 41 tend to be parallel, thus allowing for smooth insertion into the hole. After the steel strand 2 reaches the predetermined position, the driving component 5 is pulled out of the hole first. During this process, the driving... Component 5 will drive the moving group to move towards positioning component 3, so that the first positioning piece 31 and the second positioning piece 41 gradually approach each other. However, since the first positioning piece 31 and the second positioning piece 41 are rotatably connected, the first positioning piece 31 and the second positioning piece 41 will gradually form a convex shape, which significantly increases the contact area with the soil in the horizontal direction and can also be embedded in the soil. Since the position of positioning component 3 is fixed, the first positioning piece 31 will compact the soil above it during rotation, forming a groove under the second positioning piece 41 to facilitate the entry of slurry and make it more stable after the slurry solidifies.

[0022] In addition, during the process of moving the drive assembly 5, the steel strand 2, the positioning assembly 3 and the moving assembly 4 can be rotated around the grouting hose 1 as the rotation center. This allows the protrusions formed by the first positioning plate 31 and the second positioning plate 41 to make good contact with the soil layer, thereby fixing the steel strand 2 in areas with relatively loose soil.

[0023] This utility model increases the contact area with the soil by forming a protrusion through the proximity of the first positioning piece 31 and the second positioning piece 41, thereby achieving the purpose of fixing the steel strand 2 in areas with relatively loose soil. Furthermore, during installation, the first positioning piece 31 and the second positioning piece 41 are far apart from each other and nearly parallel, allowing the steel strand 2 to be smoothly inserted into the hole.

[0024] Furthermore, the positioning component 3 includes a fixed tube 32, and the moving component 4 includes a moving tube 42. The fixed tube 32 is fixedly connected to the steel strand 2, and the moving tube 42 is slidably connected to the fixed tube 32. The first positioning piece 31 is rotatably connected to the side of the fixed tube 32 close to the moving tube 42, and the second positioning piece 41 is rotatably connected to the side of the moving tube 42 away from the fixed tube 32.

[0025] Because stones and other debris in the soil can scratch or squeeze the grouting hose 1, and stones are more likely to move in areas with looser soil, a fixed pipe 32 and a movable pipe 42 are also provided to protect the grouting hose 1. Multiple sets of fixed pipes 32 and movable pipes 42 can be provided to better cover the entire grouting hose 1. During grouting, in order for the grout to better fill the hole, the movable pipe 42 is set to overlap with the fixed pipe 32 after moving. On this basis, a first positioning piece 31 is rotatably connected to the side of the fixed pipe 32 near the movable pipe 42, and a second positioning piece 41 is rotatably connected to the side of the movable pipe 42 away from the fixed pipe 32. In this way, when the first positioning piece 31 and the second positioning piece 41 are close together, the contact area with the soil layer can be maximized, thereby fixing the steel strand 2 in areas with looser soil.

[0026] Furthermore, the positioning component 3 also includes a lower contact ring 33, and the moving component 4 also includes an outer elastic ring 43. The lower contact ring 33 is fixedly connected to the inner wall of the fixed tube 32 near the moving tube 42, and the outer elastic ring 43 is fixedly connected to the outer wall of the moving tube 42 near the fixed tube 32. The outer elastic ring 43 is slidably connected to the fixed tube 32, and the lower contact ring 33 is slidably connected to the moving tube 42.

[0027] The positioning component 3 also includes an upper abutment ring 34, which is fixedly connected to the inner wall of the fixed tube 32 at the end away from the moving tube 42. The upper abutment ring 34 is used to abut the top of the moving tube 42 to limit the upward movement of the moving tube 42.

[0028] Since the moving tube 42 is a movable component, its moving distance needs to be limited. Therefore, an upper abutment ring 34 and a lower abutment ring 33 are respectively provided at the upper and lower ends of the inner wall of the fixed tube 32. The lower abutment ring 33 can prevent the moving tube 42 from detaching from the fixed tube 32 by abutting against the outer elastic ring 43. In addition, in order to avoid damage to the lower abutment ring 33 due to collision, an elastic outer elastic ring 43 is used. However, if the driving component 5 applies too much force, it may cause the outer elastic ring 43 to deform, thereby causing the moving tube 42 to detach from the fixed tube 32. Therefore, the upper abutment ring 34 is provided to abut against the top of the moving tube 42 to limit the upward movement of the moving tube 42.

[0029] Furthermore, the positioning component 3 also includes an elastic limiting ring 35, which is fixedly connected to the inner wall of the fixed tube 32 and is used to restrict the downward movement of the outer elastic ring 43.

[0030] The end of the elastic limiting ring 35 facing the outer elastic ring 43 is inclined, and the end of the outer elastic ring 43 facing the elastic limiting ring 35 is inclined.

[0031] To prevent the moving tube 42 from falling, an elastic limiting ring 35 is provided for limiting its movement. When the moving tube 42 moves upward, the elastic limiting ring 35 and the outer elastic ring 43, which are inclined at one end, abut against each other, forcing the elastic limiting ring 35 and the outer elastic ring 43 to deform to a certain extent, so that the outer elastic ring 43 can pass through the elastic limiting ring 35.

[0032] Furthermore, the drive assembly 5 includes a drive ring 51, and the moving assembly 4 also includes an inner elastic ring 44. The inner elastic ring 44 is fixedly connected to one end of the moving tube 42 facing the outer elastic ring 43. The drive ring 51 is used to drive the moving component to move by abutting the inner elastic ring 44.

[0033] The drive assembly 5 also includes a rope 52, which is fixedly connected to the drive ring 51.

[0034] The rope 52 is used to drive the drive ring 51 to move outside the hole. After the drive ring 51 drives the moving tube 42 to move by abutting the inner elastic ring 44, the upper abutting ring 34 abuts against the top of the moving tube 42, so that the moving tube 42 can no longer move. Then the inner elastic ring 44 deforms, so that the drive ring 51 can continue to move upward, thereby driving another moving tube 42 to move upward.

[0035] The above description is merely a preferred embodiment of this utility model. The protection scope of this utility model is not limited to the above embodiments. All technical solutions falling within the scope of this utility model's concept are protected. It should be noted that for those skilled in the art, any improvements and modifications made without departing from the principle of this utility model should also be considered within the protection scope of this utility model.

Claims

1. A prestressed steel strand anti-buoyancy anchor cable, characterized in that, It includes a grouting hose, steel strand, positioning component, moving component and driving component. The positioning component is connected to the moving component. The steel strand is connected to the positioning component. The positioning component includes a first positioning piece. The moving component includes a second positioning piece. The first positioning piece and the second positioning piece are rotatably connected. The driving component is used to drive the moving component to move. As the moving component moves toward the positioning component, the first positioning piece moves toward the second positioning piece.

2. The prestressed steel strand anti-buoyancy anchor cable according to claim 1, characterized in that, The positioning component includes a fixed tube, the moving component includes a moving tube, the fixed tube is fixedly connected to the steel strand, the moving tube is slidably connected to the fixed tube, the first positioning piece is rotatably connected to the side of the fixed tube close to the moving tube, and the second positioning piece is rotatably connected to the side of the moving tube away from the fixed tube.

3. The prestressed steel strand anti-buoyancy anchor cable according to claim 2, characterized in that, The positioning component further includes a lower contact ring, and the moving component further includes an outer elastic ring. The lower contact ring is fixedly connected to the inner wall of the fixed tube near the moving tube end, and the outer elastic ring is fixedly connected to the outer wall of the moving tube near the fixed tube end. The outer elastic ring is slidably connected to the fixed tube, and the lower contact ring is slidably connected to the moving tube.

4. The prestressed steel strand anti-buoyancy anchor cable according to claim 2, characterized in that, The positioning component also includes an upper abutment ring, which is fixedly connected to the inner wall of the fixed tube at the end away from the moving tube. The upper abutment ring is used to abut the top of the moving tube to restrict the upward movement of the moving tube.

5. The prestressed steel strand anti-buoyancy anchor cable according to claim 3, characterized in that, The positioning component also includes an elastic limiting ring, which is fixedly connected to the inner wall of the fixed tube and is used to restrict the downward movement of the outer elastic ring.

6. The prestressed steel strand anti-buoyancy anchor cable according to claim 5, characterized in that, The end of the elastic limiting ring facing the outer elastic ring is inclined, and the end of the outer elastic ring facing the elastic limiting ring is inclined.

7. The prestressed steel strand anti-buoyancy anchor cable according to claim 2, characterized in that, The driving component includes a driving ring, and the moving component also includes an inner elastic ring. The inner elastic ring is fixedly connected to one end of the moving tube facing the outer elastic ring. The driving ring is used to drive the moving tube to move by abutting the inner elastic ring.

8. The prestressed steel strand anti-buoyancy anchor cable according to claim 7, characterized in that, The drive assembly also includes a rope, which is fixedly connected to the drive ring.

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