Anchorage device for cutting-off-free prestressed main reinforcements
By designing a cutting-free prestressed main reinforcement anchor, using the combined structure of round steel columns, bases and outer formwork, the stress loss and environmental pollution caused by prestressed steel cutting are solved, and the stable fixation and effective utilization of prestressed steel bars are achieved.
Patent Information
- Application Number
- CN202421686057.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-07-17
- Publication Date
- 2025-06-17
- Estimated Expiration
- 2034-07-17
AI Technical Summary
In the prior art, the prestressed main bars need to be cut during the separation of the anchor, resulting in stress loss, environmental pollution and health threats. At the same time, the prestressed steel bars may die due to retraction.
An anchor with no cutting-off prestressed main rib was designed. Through the combination of round steel columns, bases and outer templates, the structure of small-headed anchors and large-headed anchors is used to achieve the fixing and disassembly of prestressed steel bars to avoid the cutting process.
The anchor can avoid cutting of prestressed steel bars, retain the steel bar upsetting head, reduce stress losses, reduce the emission of harmful gases and dust, protect the health of the environment and workers, and avoid the retraction and extinction of prestressed steel bars.
Smart Images
Figure CN222991019U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of construction engineering manufacturing, in particular to an anchor for prestressed main bars without cutting. Background Art
[0002] Due to the advantages of fast construction speed, relatively low comprehensive cost, and convenient on-site management, prestressed pipe piles and prestressed electric poles are increasingly widely used.
[0003] 1. In the prior art, during the separation of the prestressed main bars from the anchor, it is necessary to cut the prestressed main bars. This process requires cold protection of the bars and inevitably results in some stress loss.
[0004] 2. Inevitably, harmful gases and dust are generated during the cutting of the prestressed bars, posing a threat to the environment and the health of the operators.
[0005] 3. After the separation of the prestressed main bars from the anchor, the maintenance of prestress depends on the holding force of the concrete. Since the upper limit of the prestress design is limited by the holding force of the concrete, and with the interference of temperature and other factors, the prestressed bars may retract, resulting in the disappearance of prestress. Therefore, we propose an anchor for prestressed main bars without cutting. Content of the Utility Model
[0006] The purpose of the utility model is to provide an anchor for prestressed main bars without cutting to solve the problems raised in the above background art.
[0007] To achieve the above purpose, the utility model provides the following technical solution: an anchor for prestressed main bars without cutting, including a round steel column, a base, and an outer formwork. The base is located on the right side of the round steel column, and the outer formwork is located between the inner side walls of the round steel column and the base. A circumferential outer convex hanging point is fixedly connected to the right side of the outer side wall of the round steel column, and the outer convex hanging points are evenly distributed. A mold support is fixedly connected to the right side of the outer side wall of the round steel column, and a positioning ring is fixedly connected to the circumferential right side wall of the mold support. A convex ring is fixedly connected to the circumferential left side wall of the base, and double-sided convex hanging points are fixedly connected to the circumferential inner side wall and the circumferential outer side wall of the convex ring. A positioning through hole is opened at the middle of the left side wall of the base. An inner formwork is sleeved on the right side of the inner cavity of the outer formwork. Concrete is filled between the outer formwork and the inner formwork. Prestressed steel bars are embedded in the circumferential interior of the concrete, and the prestressed steel bars are evenly distributed. A small-head anchor is provided on the left side of the concrete, and a large-head anchor is provided on the right side of the concrete.
[0008] As a further description of the above technical solution:
[0009] A release nut is screwed on the outer wall of the round steel column for one week and on the left side of the mold support, and a fastening nut is screwed on the outer wall of the round steel column for one week and on the left side of the release nut.
[0010] As a further description of the above technical solution:
[0011] A first through hole is opened on the outer wall of the right side of the small head anchor for one week, a second through hole is opened on the outer wall of the left side of the large head anchor for one week, the left end of the prestressed steel bar penetrates through the first through hole, the right end of the prestressed steel bar penetrates through the second through hole, a first steel bar upset head is fixed at the left end of the prestressed steel bar, and a second steel bar upset head is fixedly connected to the right end of the prestressed steel bar.
[0012] As a further description of the above technical solution:
[0013] The left side wall of the small head anchor is fixedly connected with small head anchor plates on the outer side for one week, and the small head anchor plates are evenly distributed. The outer side wall of the small head anchor plate is provided with first anchor holes, and the outer convex hanging point is clamped in the inner cavity of the first anchor hole.
[0014] As a further description of the above technical solution:
[0015] The right side wall of the large head anchor is fixedly connected with outer anchor plates on the outer side for one week, and the outer anchor plates are evenly distributed. The right side wall of the large head anchor and on the inner side for one week of the outer anchor plates is fixedly connected with inner anchor plates, and the inner anchor plates are evenly distributed.
[0016] As a further description of the above technical solution:
[0017] The outer side wall of the outer anchor plate and the inner side wall of the inner anchor plate are provided with second anchor holes, and the double convex hanging point is clamped in the inner cavity of the second anchor hole.
[0018] Compared with the prior art, the beneficial effects of the present utility model are as follows: For the anchor without cutting the prestressed main reinforcement, the tension mechanism is detachably connected to the first anchor hole of the small-head anchor plate on the small-head anchor through the outer convex hanging points on the round steel column, and then connected to the second anchor holes on the outer anchor plate and the inner anchor plate of the large-head anchor through the double-sided convex hanging points on the left convex ring of the base. The small-head anchor is connected to the left end of the prestressed steel bar through the first through hole, and the large-head anchor is connected to the right end of the prestressed steel bar through the second through hole, and is fixedly connected through the first steel bar upset head and the second steel bar upset head. The release process is that the small-head anchor is separated from the tension mechanism. After the concrete component is poured and cured in place, after removing the outer formwork and the inner formwork, by prying the small-head anchor plate, the outer convex hanging points are separated from the first anchor hole, so that the small-head anchor is separated from the round steel column. By prying the outer anchor plate and the inner anchor plate, the double-sided convex hanging points are separated from the second anchor hole, so that the large-head anchor is separated from the base. There is no need to cut the prestressed steel bar with a cutting machine. The anchor is integrated with the prestressed component, and the steel bar upset head is retained, thereby avoiding partial stress loss. Without cutting, harmful gases and dust can be reduced, avoiding threats to the environment and the health of operators. At the same time, interference from temperature and other factors during cutting can be avoided, and the possible retraction of the prestressed steel bar, resulting in the disappearance of prestress, can be avoided. BRIEF DESCRIPTION OF THE DRAWINGS
[0019] Figure 1 is the main sectional view structure diagram of an anchor without cutting the prestressed main reinforcement proposed by the present utility model;
[0020] Figure 2 is the three-dimensional structure diagram of the small-head anchor of an anchor without cutting the prestressed main reinforcement proposed by the present utility model;
[0021] Figure 3 is the three-dimensional structure diagram of the large-head anchor of an anchor without cutting the prestressed main reinforcement proposed by the present utility model.
[0022] In the figure: 100, round steel column; 110, outer convex hanging point; 120, mold support; 130, positioning ring; 140, force-relieving nut; 150, fastening nut; 200, base; 210, convex ring; 211, double-sided convex hanging point; 220, positioning through hole; 300, outer formwork; 310, inner formwork; 320, concrete; 330, prestressed steel bar; 331, first steel bar upset head; 332, second steel bar upset head; 340, small-head anchor; 341, first through hole; 342, small-head anchor plate; 343, first anchor hole; 350, large-head anchor; 351, second through hole; 352, outer anchor plate; 353, inner anchor plate; 354, second anchor hole. DETAILED DESCRIPTION OF THE EMBODIMENTS
[0023] The following will clearly and completely describe the technical solutions in the embodiments of the present utility model in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without creative efforts shall fall within the protection scope of the present utility model.
[0024] In the description of the present utility model, it should be understood that the orientation or positional relationship indicated by the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. is based on the orientation or positional relationship shown in the accompanying drawings, and is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as a limitation of the present utility model. In addition, the features defined as "first" and "second" may explicitly or implicitly include one or more of such features. In the description of the present utility model, unless otherwise stated, the meaning of "a plurality" is two or more.
[0025] In the description of the present utility model, it should be noted that, unless otherwise clearly defined and limited, the terms "installation", "connection", and "connection" should be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or an integral connection; it may be a mechanical connection or an electrical connection; it may be directly connected or indirectly connected through an intermediate medium, and it may be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific situations.
[0026] The present utility model provides an anchor for prestressed main bars without cutting, please refer to Figures 1 - 3 , including a round steel column 100, a base 200, and an outer formwork 300;
[0027] Please refer to again Figures 1 - 3 , on the right side of the outer side wall of the round steel column 100, an outer convex hanging point 110 is fixedly connected around one week, and the outer convex hanging points 110 are evenly distributed. On the right side of the outer side wall of the round steel column 100, a mold support 120 is fixedly connected around one week. On the right side wall of the mold support 120, a positioning ring 130 is fixedly connected around one week. On the outer side wall of the round steel column 100 and on the left side of the mold support 120, a force-relieving nut 140 is screwed. On the outer side wall of the round steel column 100 and on the left side of the force-relieving nut 140, a fastening nut 150 is screwed;
[0028] Please refer to againFigures 1 - 3 Around the left side wall of the base 200, there is a convex ring 210 fixedly connected. Around the inner side wall and the outer side wall of the convex ring 210, there are double-sided convex hanging points 211 fixedly connected. At the middle of the left side wall of the base 200, there is a positioning through hole 220. The base 200 is located on the right side of the round steel column 100.
[0029] Please refer to again Figures 1 - 3 Inside the right side of the inner cavity of the outer formwork 300, there is an inner formwork 310 sleeved. Between the outer formwork 300 and the inner formwork 310, there is concrete 320 filled. Around the inside of the concrete 320, there are prestressed steel bars 330 embedded, and the prestressed steel bars 330 are evenly distributed. On the left side of the concrete 320, there is a small-head anchor 340. On the right side of the concrete 320, there is a large-head anchor 350. Around the outer side of the right side wall of the small-head anchor 340, there is a first through hole 341 opened. Around the outer side of the left side wall of the large-head anchor 350, there is a second through hole 351 opened. The left end of the prestressed steel bar 330 penetrates through the first through hole 341. The right end of the prestressed steel bar 330 penetrates through the second through hole 351. At the left end of the prestressed steel bar 330, there is a steel bar upset head 331 fixed. The right end of the prestressed steel bar 330 is fixedly connected with a second steel bar upset head 332. Around the outer side of the left side wall of the small-head anchor 340, there is a small-head anchor plate 342 fixedly connected, and the small-head anchor plates 342 are evenly distributed. On the outer side wall of the small-head anchor plate 342, there is a first anchor hole 343 opened. The outer convex hanging point 110 on the round steel column 100 is clamped in the inner cavity of the first anchor hole 343. Around the outer side of the right side wall of the large-head anchor 350, there is an outer anchor plate 352 fixedly connected, and the outer anchor plates 352 are evenly distributed. On the right side wall of the large-head anchor 350 and inside the outer anchor plate 352, there is an inner anchor plate 353 fixedly connected, and the inner anchor plates 353 are evenly distributed. On the outer side wall of the outer anchor plate 352 and the inner side wall of the inner anchor plate 353, there is a second anchor hole 354 opened, and the double-sided convex hanging point 211 is clamped in the inner cavity of the second anchor hole 354. The outer formwork 300 is located between the inner side walls of the round steel column 100 and the base 200. The tension mechanism is detachably connected to the small-head anchor plate 342 in the first anchor hole 343 on the small-head anchor 340 through the outer convex hanging point 110 on the round steel column 100, and then is connected to the second anchor hole 354 on the outer anchor plate 352 and the inner anchor plate 353 on the large-head anchor 350 through the double-sided convex hanging point 211 on the convex ring 210 on the left side of the base 200. The small-head anchor 340 is connected to the left end of the prestressed steel bar 330 through the first through hole 341. The large-head anchor 350 is connected to the right end of the prestressed steel bar 330 through the second through hole 351, and is fixedly connected through the steel bar upset head 331. The release process is that the small-head anchor 340 is separated from the tension mechanism. After the concrete 320 component is poured and cured in place, after removing the outer formwork 300 and the inner formwork 310, there is no need to cut the prestressed steel bar 330 with a cutting machine. The anchor is integrated with the prestressed component, and the first steel bar upset head 331 and the second steel bar upset head 332 are retained.
[0030] In summary, it is possible to avoid partial stress loss, reduce harmful gases and dust without cutting, avoid threatening the environment and the health of operating personnel, and also avoid interference from the temperature and other factors during cutting, and avoid the possibility of the prestressed steel bar 330 retracting, resulting in the disappearance of prestress.
[0031] In specific use, first install the prestressed steel bar 330, then install the outer formwork 300 and the inner formwork 310. The large-head anchor 350 is connected to the right end of the prestressed steel bar 330 through the second through-hole 351 and is fixedly connected through the steel bar upset head 331, and then is connected to the second anchor holes 354 on the outer anchor plate 352 and the inner anchor plate 353 of the large-head anchor 350 through the double-sided protruding hanging points 211 on the left convex ring 210 of the base 200. The small-head anchor 340 is connected to the left end of the prestressed steel bar 330 through the first through-hole 341, and the outer protruding hanging point 110 on the round steel column 100 is detachably connected to the first anchor hole 343 on the small-head anchor plate 342 of the small-head anchor 340. Connect the tension mechanism to the round steel column 100 for tensioning. When tensioning, the prestressed steel bar 330 is stretched under tension. At this time, rotate the fastening bolt 150 to drive the force-relieving nut 140 to tightly press against the mold support 120. After this operation is completed, the round steel column 100 is separated from the tension mechanism. Then, fill the concrete 320 into the outer formwork 300 and the inner formwork 310. After the concrete 320 is cured in place, remove the outer formwork 300, the inner formwork 310, the force-relieving nut 140, and the fastening bolt 150. Then, pry the small-head anchor plate 342 to separate the outer protruding hanging point 110 from the first anchor hole 343, separating the small-head anchor 340 from the round steel column 100, and pry the outer anchor plate 352 and the inner anchor plate 353 to separate the double-sided protruding hanging points 211 from the second anchor holes 354, separating the large-head anchor 350 from the base 200. There is no need to cut the prestressed steel bar 330 with a cutting machine, and the anchor is integrated with the prestressed component, and the steel bar upset head 331 is retained.
[0032] In the description of this specification, the description with reference to terms such as "one embodiment", "some embodiments", "schematic embodiments", "examples", "specific examples", or "some examples" means that the specific features, structures, materials, or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described can be combined in a suitable manner in any one or more embodiments or examples.
[0033] Although embodiments of the present utility model have been shown and described, those of ordinary skill in the art can understand that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principles and spirit of the present utility model. The scope of the present utility model is defined by the claims and their equivalents.
Claims
1. An anchorage for prestressed main reinforcement without cutting, characterized in that: The invention comprises a round steel column (100), a base (200) and an outer template (300), wherein the base (200) is located on the right side of the round steel column (100), and the outer template (300) is located between the inner side wall of the round steel column (100) and the base (200); an outer protruding hanging point (110) is fixedly connected to the right side of the outer side wall of the round steel column (100), and the outer protruding hanging points (110) are evenly distributed; a mold support (120) is fixedly connected to the right side of the outer side wall of the round steel column (100); a positioning ring (130) is fixedly connected to the right side wall of the mold support (120); and a positioning ring (130) is fixedly connected to the left side wall of the base (200). A convex ring (210), wherein the inner wall and the outer wall of the convex ring (210) are fixedly connected with double-sided convex hanging points (211), a positioning through hole (220) is opened in the middle of the base (200), an inner template (310) is sleeved on the right side of the inner cavity of the outer template (300), concrete (320) is filled between the outer template (300) and the inner template (310), prestressed steel bars (330) are embedded in the inner circle of the concrete (320), and the prestressed steel bars (330) are evenly distributed, a small-head anchor (340) is provided on the left side of the concrete (320), and a large-head anchor (350) is provided on the right side of the concrete (320).
2. The anchorage device for prestressed main reinforcement without cutting off according to claim 1 is characterized in that: A tension nut (140) is screwed on the outer wall of the round steel column (100) and located on the left side of the mold support (120), and a fastening nut (150) is screwed on the outer wall of the round steel column (100) and located on the left side of the tension nut (140).
3. The anchorage device for prestressed main reinforcement without cutting off according to claim 1 is characterized in that: A first through hole (341) is formed around the outer side of the right side wall of the small-head anchor (340), a second through hole (351) is formed around the outer side of the left side wall of the large-head anchor (350), the left end of the prestressed steel bar (330) passes through the first through hole (341), the right end of the prestressed steel bar (330) passes through the second through hole (351), the left end of the prestressed steel bar (330) is fixed with a first steel bar head (331), and the right end of the prestressed steel bar (330) is fixedly connected with a second steel bar head (332).
4. The anchorage device for prestressed main reinforcement without cutting off according to claim 1 is characterized in that: A small head anchor plate (342) is fixedly connected to the outer side of the left side wall of the small head anchor (340), and the small head anchor plates (342) are evenly distributed. The outer side wall of the small head anchor plate (342) is provided with a first anchor hole (343), and the outer protruding hanging point (110) is snap-fitted into the inner cavity of the first anchor hole (343).
5. The anchorage device for prestressed main reinforcement without cutting off according to claim 1 is characterized in that: An outer anchor plate (352) is fixedly connected to the outer side of the right side wall of the big head anchor (350), and the outer anchor plates (352) are evenly distributed. An inner anchor plate (353) is fixedly connected to the right side wall of the big head anchor (350) and located on the inner side of the outer anchor plate (352), and the inner anchor plates (353) are evenly distributed.
6. The anchorage device for prestressed main reinforcement without cutting off according to claim 5 is characterized in that: The outer wall of the outer anchor plate (352) and the inner wall of the inner anchor plate (353) are provided with second anchor holes (354), and the double-sided protruding hanging points (211) are snap-fitted into the inner cavities of the second anchor holes (354).