Anti-loose anchorage device

Abstract

The utility model discloses an anti-loosening anchorage device. The anchorage device comprises a first fixing cylinder clamped on a steel strand; the separation cylinder is arranged on one side of the first fixing cylinder and sleeves the outer ring of the steel strand; the sleeve is installed at the end, away from the first fixing cylinder, of the separation cylinder, a positioning block is arranged at the end, close to the separation cylinder, of the sleeve, a limiting cover is arranged on the side, away from the sleeve, of the positioning block, the limiting cover is in threaded connection with the sleeve, and the limiting cover is used for extruding the positioning block to lock the steel strand. The utility model has good anti-loosening performance, ensures the safety of the structure, does not need to frequently check and maintain in the use process, and reduces the workload and cost of later maintenance.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of anchorage device, especially to a prevent loose anchorage device. BACKGROUND

[0002] In the prestressed structural member, the anchorage device is the key component that transmits the tension of the prestressed tendon to the prestressed structural member. Through the anchoring effect of the anchorage device, the prestressed tendon and the prestressed structural member form a whole, and when the prestressed tendon is tensioned to generate tension, the tension can be effectively transmitted to the prestressed structural member, so as to establish pre-compressive stress in the prestressed structural member and improve the load-carrying capacity and crack resistance of the member. In the prestressed structure, the loosening of the anchorage device will cause the gradual loss of the prestress of the prestressed tendon, which will reduce the pre-compressive stress in the prestressed structural member. This may cause the member to crack and deform, which will reduce the load-carrying capacity and crack resistance of the member and even affect the safety of the entire structure, such as excessive deflection, cracking, and even collapse of the prestressed structural member. SUMMARY

[0003] The main purpose of the utility model is to provide a prevent loose anchorage device to solve the problem that the loosening of the anchorage device in the prior art will cause the gradual loss of the prestress of the prestressed tendon, which will reduce the pre-compressive stress of the prestressed structural member. This may cause the member to crack and deform, which will reduce the load-carrying capacity and crack resistance of the member and even affect the safety of the entire structure, such as excessive deflection, cracking, and even collapse of the prestressed structural member.

[0004] To achieve the above-mentioned purpose, the utility model provides the following technical scheme:

[0005] A prevent loose anchorage device, the anchorage device comprises a first fixed cylinder clamped on the steel strand; a separation cylinder is arranged on one side of the first fixed cylinder, the separation cylinder is sleeved on the outer circle of the steel strand; a sleeve is installed at the end of the separation cylinder away from the first fixed cylinder, one end of the sleeve close to the separation cylinder is provided with a positioning block, the side of the positioning block away from the sleeve is provided with a limiting cover, the limiting cover is threadedly connected with the sleeve, and the limiting cover is used for extruding the positioning block to lock the steel strand.

[0006] As a further improvement of the utility model, the first fixed cylinder comprises two groups of first fixed pieces, the first fixed pieces are arranged in a semicircular sheet shape, corresponding first protrusions are arranged on both sides of the two groups of first fixed pieces, first fasteners are commonly arranged through the two groups of first protrusions that are in close contact, and a plurality of tooth grooves are formed in the inner side of the first fixed piece.

[0007] As a further improvement of the utility model, the separation cylinder comprises two groups of second fixed pieces, and the second fixed pieces are arranged in a semicircular sheet shape.

[0008] As a further improvement of the utility model, the sleeve includes two groups of third fixed sheets, the third fixed sheet is provided in a semicircular sheet shape, a wedge-shaped groove is formed in one end of the third fixed sheet close to the partition cylinder, and a first rotating block is mounted on the outer side of the third fixed sheet.

[0009] As a further improvement of the utility model, the positioning block includes three groups of extrusion blocks mounted in the wedge-shaped groove, the extrusion block is provided with an arc surface corresponding to the wedge-shaped groove, and a gap groove is formed in the corresponding position of the extrusion block and the steel strand.

[0010] As a further improvement of the utility model, the limiting cover includes two groups of split cover sheets, the two groups of split cover sheets are provided in a tank shape with one side open, the split cover sheet is threadedly connected with the third fixed sheet, a through hole is formed in the corresponding position of the split cover sheet and the steel strand, and a second rotating block is mounted on the outer side of the split cover sheet.

[0011] As a further improvement of the utility model, at least one group of connecting assemblies is mounted on the outer sides of the partition cylinder, the sleeve and the limiting cover, the connecting assembly includes two groups of fixedly arranged fixing rings, a connecting ring is slidably connected in the fixing ring, second protrusions are fixedly connected at both ends of the connecting ring, and a second fastener is commonly arranged in the two groups of second protrusions on the same side.

[0012] As a further improvement of the utility model, the positioning assembly is arranged on one side of the split cover sheet close to the partition cylinder, the positioning assembly includes a fixed plate arranged on one side of the split cover sheet close to the second fixed sheet, a slide rod is fixedly connected on one side of the fixed plate, a slide block is slidably connected on the slide rod, and the slide block is fixedly connected to the side surface of the second fixed sheet.

[0013] The utility model has the advantages that after the split cover sheet is threadedly connected to the third fixed sheet, the extrusion blocks are extruded, the extrusion blocks are close to each other and clamp the steel strand, the positions of the sleeve, the positioning block and the limiting cover are fixed, and loosening is prevented, the two groups of first fixed sheets clamp the steel strand after the first fastener is tightened, the friction is increased by the arrangement of the tooth groove, loosening of the structure is further prevented, the stability of the anchor installation is ensured, the utility model has good loosening prevention performance, the safety of the structure is ensured, frequent inspection and maintenance are not needed during use, and the workload and cost of later maintenance are reduced. BRIEF DESCRIPTION OF DRAWINGS

[0014] Figure 1 It is a structural schematic view of an anti-loosening anchor device.

[0015] Figure 2 It is a sectional structure schematic view of the utility model. Figure 1 ​

[0016] Figure 3 This is a disassembly diagram of the limiting cover;

[0017] Figure 4 yes Figure 1 Enlarged view of point A in the middle;

[0018] Labeling explanations: 1. First fixing cylinder; 11. First fixing plate; 12. First protrusion; 13. First fastener; 14. Tooth groove;

[0019] 2. Divider cylinder; 21. Second fixing plate;

[0020] 3. Sleeve; 31. Third fixing plate; 32. Wedge groove; 33. First rotating block;

[0021] 4. Positioning block; 41. Extrusion block; 42. Arc-shaped surface; 43. Relief groove;

[0022] 5. Limiting cover; 51. Split cover plate; 52. Through hole; 53. Second rotating block;

[0023] 6. Connecting component; 61. Retaining ring; 62. Connecting ring; 63. Second protrusion; 64. Second fastener;

[0024] 7. Positioning component; 71. Fixing plate; 72. Slide bar; 73. Slider. Detailed Implementation

[0025] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of the embodiments. Based on the embodiments of this application, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of this application.

[0026] like Figure 1 As shown, this embodiment provides an example of an anti-loosening anchor. In this embodiment, the anchor includes a first fixing cylinder 1 that clamps the steel strand. The first fixing cylinder 1 includes two sets of first fixing plates 11, each of which is semi-circular. Each of the two sets of first fixing plates 11 has a corresponding first protrusion 12 on both sides. A first fastener 13 passes through the two sets of mating first protrusions 12. When the first fastener 13 is tightened, it drives the two sets of first fixing plates 11 to clamp the steel strand. Multiple sets of toothed grooves 14 are formed on the inner side of the first fixing plate 11 to increase the friction between the first fixing plate 11 and the steel strand, preventing the first fixing cylinder 1 from sliding.

[0027] Further, the anchor device includes a separation cylinder 2 arranged on one side of the first fixing cylinder 1, the separation cylinder 2 is sleeved on the outer circle of the steel strand, the separation cylinder 2 includes two groups of second fixing plates 21, the second fixing plate 21 is arranged in a semicircular plate shape, and the separation cylinder 2 is used for separating the first fixing cylinder 1 and the limiting cover 5.

[0028] Further, the anchor device further includes a sleeve 3 installed at one end of the separation cylinder 2 away from the first fixing cylinder 1, the sleeve 3 includes two groups of third fixing plates 31, the third fixing plate 31 is arranged in a semicircular plate shape, and a wedge-shaped groove 32 is arranged at one end of the third fixing plate 31 close to the separation cylinder 2, and a first rotating block 33 is installed on the outer side of the third fixing plate 31, and the first rotating block 33 is arranged to facilitate rotating the sleeve 3 by using a wrench or a pipe wrench.

[0029] One end of the sleeve 3 close to the separation cylinder 2 is provided with a positioning block 4, the positioning block 4 includes three groups of extrusion blocks 41 installed in the wedge-shaped groove 32, the extrusion block 41 is provided with an arc surface 42 corresponding to the wedge-shaped groove 32, and a gap groove 43 is arranged at the position corresponding to the steel strand, and the three groups of extrusion blocks 41 are extruded and locked to the steel strand when they are close to each other.

[0030] The limiting cover 5 is arranged on the side of the positioning block 4 away from the sleeve 3, the limiting cover 5 is threadedly connected with the sleeve 3, and the limiting cover 5 is used for extruding the positioning block 4 to lock the steel strand. The limiting cover 5 includes two groups of split cover plates 51, the two groups of split cover plates 51 are arranged in a can shape with one side open, the split cover plate 51 is threadedly connected with the third fixing plate 31, a through hole 52 is arranged at the position corresponding to the steel strand, and after the two groups of split cover plates 51 are threadedly connected to the third fixing plate 31, the extrusion blocks 41 are extruded, so that the three groups of extrusion blocks 41 are close to each other and extruded and locked to the steel strand. The second rotating block 53 is installed on the outer side of the split cover plate 51, so as to facilitate rotating the split cover plate 51 by using a wrench or a pipe wrench.

[0031] At least one group of connecting assemblies 6 is sleeved and installed on the outer sides of the separation cylinder 2, the sleeve 3 and the limiting cover 5, and the connecting assembly 6 is used for fixing the separation cylinder 2, the sleeve 3 and the limiting cover 5 on the outer circle of the steel strand. The connecting assembly 6 includes two groups of fixedly arranged fixing rings 61, a connecting ring 62 is slidably connected in the fixing ring 61, second protrusions 63 are fixedly connected at both ends of the connecting ring 62, a second fastener 64 is arranged to penetrate through the second protrusions 63 on the same side, and after the second fastener 64 is locked, the two groups of fixing rings 61 form a ring structure, so that the separation cylinder 2, the sleeve 3 and the limiting cover 5 are fixed on the outer circle of the steel strand.

[0032] Finally, the positioning assembly 7 is arranged on one side of the split cover plate 51 close to the separation cylinder 2, the positioning assembly 7 comprises a fixed plate 71 arranged on one side of the split cover plate 51 close to the second fixed plate 21, one side of the fixed plate 71 is fixedly connected with a sliding rod 72, the sliding rod 72 is slidably connected with a sliding block 73, and the sliding block 73 is fixedly connected to the side of the second fixed plate 21, so that the position of the separation cylinder 2 can be pre-fixed before the first fixed cylinder 1 is installed.

[0033] In use, first, the two groups of third fixed plates 31 are clamped on the outer circle of the steel cable, and the connecting rings 62 are sleeved on the fixed rings 61 fixed on the outer sides of the third fixed plates 31, and the two groups of connecting rings 62 are locked together by the second fasteners 64 passing through the positions of the second protruding blocks 63. The two groups of third fixed plates 31 are commonly sleeved on the outer circle of the steel cable, then the three groups of extrusion blocks 41 are sequentially placed in the wedge-shaped grooves 32, and the two groups of split cover plates 51 are sleeved on the outer circle of the steel cable, and the split cover plates 51 are fixed by the connecting assembly 6. The third fixed plates 31 and the split cover plates 51 are rotated to be threadedly connected, the split cover plates 51 contact the extrusion blocks 41, the extrusion blocks 41 are driven to slide in the wedge-shaped grooves 32 and extrude the steel cable, and the sleeve 3, the positioning block 4 and the limiting cover 5 are fixed on the steel cable. Then, the two groups of second fixed plates 21 are sleeved on the steel cable and fixed by the two groups of connecting assemblies 6. Finally, the two groups of first fixed plates 11 are sleeved on the steel cable, and the first fasteners 13 are tightened, so that the inner sides of the first fixed plates 11 extrude the steel cable, and the position of the first fixed cylinder 1 is fixed.

[0034] The specific embodiments of the utility model have been described in detail above, but they only serve as examples, and the utility model is not limited to the specific embodiments described above. Any equivalent modification or replacement of the utility model made by those skilled in the art is also within the scope of the utility model, therefore, equivalent transformation, modification, improvement, etc. made without departing from the spirit and principle range of the utility model should be covered in the scope of the utility model.

Claims

1. A slack preventing anchorage, characterized by, The anchor includes: The first fixed cylinder (1) is clamped on the steel strand; The separation cylinder (2) is arranged on one side of the first fixed cylinder (1), and the separation cylinder (2) is sleeved on the outer circle of the steel strand; The sleeve (3) is installed at the end of the separation cylinder (2) away from the first fixed cylinder (1), and the end of the sleeve (3) close to the separation cylinder (2) is provided with a positioning block (4), and the side of the positioning block (4) away from the sleeve (3) is provided with a limiting cover (5), the limiting cover (5) is screwed with the sleeve (3), and the limiting cover (5) is used for extruding the positioning block (4) to lock the steel strand.

2. The anti-backout anchor of claim 1, wherein, The first fixed cylinder (1) includes two groups of first fixed pieces (11), the first fixed pieces (11) are arranged in a semicircular sheet shape, and the two sides of the two groups of first fixed pieces (11) are provided with corresponding first protrusions (12), and the two groups of first protrusions (12) are arranged in a semicircular sheet shape, and the two groups of first protrusions (12) are arranged in a semicircular sheet shape. The first fastener (13) is arranged in the first fixed piece (11) and the first fixed piece (11) is arranged in the first fixed piece (11).

3. The anti-backout anchorage of claim 2, wherein, The separation cylinder (2) includes two groups of second fixed pieces (21), and the second fixed pieces (21) are arranged in a semicircular sheet shape.

4. The anti-backout anchorage of claim 3, wherein, The sleeve (3) includes two groups of third fixed pieces (31), and the third fixed pieces (31) are arranged in a semicircular sheet shape, and the end of the third fixed piece (31) close to the separation cylinder (2) is provided with a wedge-shaped groove (32), and the outer side of the third fixed piece (31) is provided with a first rotating block (33).

5. The anti-backout anchor of claim 4, wherein, The positioning block (4) includes three groups of extrusion blocks (41) installed in the wedge-shaped groove (32), the extrusion blocks (41) are provided with an arc surface (42) corresponding to the wedge-shaped groove (32), and the extrusion blocks (41) are provided with a gap (43) corresponding to the steel strand.

6. The anti-backout anchorage of claim 5, wherein, The limiting cover (5) includes two groups of split cover pieces (51), and the two groups of split cover pieces (51) are arranged in a can shape with one side open, the split cover piece (51) is screwed with the third fixed piece (31), the split cover piece (51) is provided with a through hole (52) corresponding to the steel strand, and the outer side of the split cover piece (51) is provided with a second rotating block (53).

7. The anti-backout anchorage of claim 6, wherein, The outer side of the separation cylinder (2), the sleeve (3) and the limiting cover (5) is sleeved and installed with at least one group of connecting components (6), the connecting components (6) include two groups of fixedly arranged fixed rings (61), the fixed ring (61) is slidably connected with a connecting ring (62), and the two ends of the connecting ring (62) are fixedly connected with a second protrusion (63). The second fastener (64) is arranged in the second protrusion (63) on the same side.

8. The anti-backout anchorage of claim 7, wherein, It also includes a positioning assembly (7) arranged on the side of the split cover piece (51) close to the separation cylinder (2), the positioning assembly (7) includes a fixed plate (71) installed on the side of the split cover piece (51) close to the second fixed piece (21), the side of the fixed plate (71) is fixedly connected with a sliding rod (72), the sliding rod (72) is slidably connected with a sliding block (73), and the sliding block (73) is fixedly connected to the side of the second fixed piece (21).

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