YMH fixed end anchoring structure

Abstract

The utility model provides a YMH fixed end anchoring structure which can guarantee the shape of a pear-shaped self-anchoring head during assembly and the anchoring performance of the fixed end after assembly, the anchoring structure comprises a corrugated pipe, a restraint ring, an exhaust pipe, steel strands, an anchoring plate and a pear-shaped anchoring part, the steel strands are arranged in the corrugated pipe, one end of the corrugated pipe is provided with the restraint ring, and the other end of the corrugated pipe is provided with the exhaust pipe. The steel strand penetrates out of the restraint ring and then penetrates out of a first through hole in the anchoring plate; the tail end of each steel strand is pressed into a pear-shaped self-anchoring head in advance through an embossing machine; the pear-shaped anchoring part is a rubber bag which is provided with a one-way valve and a through hole in the middle, and the inner space of the pear-shaped self-anchoring head is filled with the rubber bag after the rubber bag bulges.

Description

Technical Field

[0001] The utility model relates to the field of anchors, in particular to a YMH fixed end anchoring structure. Background Art

[0002] In the prior art, when the post-tensioning force needs to be directly transmitted to the concrete, the YMH fixed-end anchor can be used. The YMH fixed-end anchor mainly includes a steel strand with a pear-shaped self-anchor head, a steel support, spiral reinforcement and a restraining ring. The pear-shaped self-anchor head of the steel strand needs to be pre-pressed by a special YH3 embossing machine.

[0003] However, during use, since the pear-shaped self-anchor head is a hollow pear-shaped steel wire frame, the pear-shaped self-anchor head is easily squeezed and deformed when the equipment is used for assembly and position adjustment, thereby affecting the anchoring effect of the fixed end. Utility Model Content

[0004] The utility model aims to provide a YMH fixed end anchoring structure, which can ensure the shape of the pear-shaped self-anchor head during assembly, and the fixed end anchoring performance after assembly is stronger.

[0005] The embodiment of the utility model is achieved as follows:

[0006] A YMH fixed-end anchoring structure comprises: a bellows, a restraining ring, an exhaust pipe, a steel strand, an anchoring plate and a pear-shaped anchoring piece. A plurality of steel strands are arranged in the bellows. A restraining ring is arranged at one end of the bellows. The steel strands pass through the restraining ring and then pass through a first through hole on the anchoring plate. The tail end of each steel strand is pre-pressed into a pear-shaped self-anchoring head by an embossing machine. The pear-shaped anchoring piece is a rubber bag with a one-way valve and a through hole in the middle. The rubber bag swells and fills the internal space of the pear-shaped self-anchoring head.

[0007] In a preferred embodiment of the present invention, the pear-shaped anchor also includes a plurality of rubber strips and cable ties. The rubber strips are integrally formed with the pear-shaped anchor. The tail end of the rubber strip has a first connecting hole. The cable tie passes through each first connecting hole in turn and is fixed to the staggered section of the pear-shaped anchor head.

[0008] In a preferred embodiment of the utility model, a plurality of connecting ears are further provided in the middle portion of the above-mentioned pear-shaped anchor, and a second connecting hole and a third connecting hole are provided on the connecting ears; the pear-shaped anchor also includes a U-shaped connector, and the connecting rod of the U-shaped connector passes through the second connecting hole and the third connecting hole, and then passes through the second through hole and the third through hole on the anchor plate and is fastened by a nut.

[0009] In a preferred embodiment of the utility model, the outer surface of the pear-shaped anchor is provided with strip reinforcement ribs matching the shape of the pear-shaped anchor head, and the cross section of the strip reinforcement ribs is C-shaped.

[0010] In a preferred embodiment of the present utility model, the above-mentioned anchoring structure also includes a spiral rib, which is sleeved outside the corrugated pipe and the anchoring end of the steel strand, and the height of the exhaust pipe exceeds the outside of the spiral rib.

[0011] In a preferred embodiment of the utility model, the above-mentioned bellows includes a bellows body and a steel liner fixedly arranged at the end of the bellows body, the other end of the steel liner is threadedly connected to the restraint ring, and the cross-sectional shape of the steel liner is a circular ring, wherein support legs extend downward on both sides of the middle of the circular ring, and the length of the support legs is shorter than the radius of the circular ring.

[0012] In a preferred embodiment of the present utility model, the above-mentioned anchoring plates are provided in plurality, and one anchoring plate is connected to one or more steel strands.

[0013] The beneficial effects of the embodiments of the utility model are as follows: in the utility model, the anchoring structure of the fixed end is improved, a pear-shaped anchor piece is inserted into the pear-shaped self-anchor head of the steel strand, and then concrete slurry is injected into the pear-shaped anchor piece. After the injection is completed, the pear-shaped anchor piece bulges to fill the internal space of the pear-shaped self-anchor head, so that the anchoring structure can reduce the squeezing of the pear-shaped self-anchor head during assembly, causing the pear-shaped self-anchor head to deform or reduce its diameter and reduce the anchoring effect; a through hole is provided in the middle, so that during the process of pouring concrete, it can be combined and fixed with the external concrete body to ensure the anchoring effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] In order to more clearly illustrate the technical solutions of the embodiments of the utility model, the drawings required for use in the embodiments will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the utility model and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other relevant drawings can be obtained based on these drawings without paying creative work.

[0015] Figure 1 This is a schematic diagram of the YMH fixed end anchoring structure of an embodiment of the utility model;

[0016] Figure 2 It is an enlarged structural schematic diagram of the pear-shaped self-anchor head part of an embodiment of the utility model;

[0017] Figure 3 A schematic diagram of the cross-sectional structure of a steel liner according to an embodiment of the utility model;

[0018] Figure 4 This is a schematic diagram of the surface structure of the anchor plate according to an embodiment of the utility model;

[0019] Figure 5 It is a schematic cross-sectional view of the reinforcing rib portion of an embodiment of the utility model.

[0020] Icons: 110- bellows; 111- bellows body; 112- steel lining; 113- support foot; 120- restraint ring; 130- exhaust pipe; 140- steel strand; 141- pear-shaped self-anchor head; 150- anchor plate; 160- pear-shaped anchor; 161- one-way valve; 162- through hole; 163- rubber strip; 164- cable tie; 165- first connecting hole; 166- connecting ear; 167- U-shaped connector; 168- strip reinforcement rib; 170- spiral rib. DETAILED DESCRIPTION

[0021] In order to make the purpose, technical scheme and advantages of the embodiments of the utility model clearer, the technical scheme in the embodiments of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiments of the utility model. Obviously, the described embodiments are part of the embodiments of the utility model, not all of the embodiments. Generally, the components of the embodiments of the utility model described and shown in the drawings here can be arranged and designed in various different configurations.

[0022] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the present invention to be protected, but merely represents selected embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0023] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, further definition and explanation thereof is not required in subsequent drawings.

[0024] In the description of the present utility model, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inside", "outside", etc. indicate the orientation or position relationship based on the orientation or position relationship shown in the accompanying drawings, or the orientation or position relationship in which the utility model product is usually placed when in use, which is only for the convenience of describing the utility model and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present utility model. In addition, the terms "first", "second", "third", etc. are only used to distinguish the description, and cannot be understood as indicating or implying relative importance.

[0025] In addition, the terms "horizontal", "vertical", "overhanging" and the like do not mean that the components are required to be absolutely horizontal or overhanging, but can be slightly tilted. For example, "horizontal" only means that its direction is more horizontal than "vertical", and does not mean that the structure must be completely horizontal, but can be slightly tilted.

[0026] In the description of the present invention, it is also necessary to explain that, unless otherwise clearly specified and limited, the terms "set", "install", "connect", and "connect" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0027] First embodiment

[0028] See also Figure 1-5 The present embodiment provides a YMH fixed end anchoring structure, which includes a bellows 110, a restraining ring 120, an exhaust pipe 130, a steel strand 140, an anchor plate 150 and a pear-shaped anchor 160. A plurality of steel strands 140 are arranged in the bellows 110, and a restraining ring 120 is arranged at one end of the bellows 110. The steel strands 140 pass through the restraining ring 120 and then pass through the first through hole on the anchor plate 150; the tail end of each steel strand 140 is pre-pressed into a pear-shaped self-anchor head 141 by an embossing machine; the pear-shaped anchor 160 is a rubber bag with a one-way valve 161 and a through hole 162 in the middle, and the rubber bag swells to fill the internal space of the pear-shaped self-anchor head 141. After the assembly work of the anchoring structure is completed, concrete pouring is carried out so that part of the concrete can enter the through hole 162, so that the pear-shaped self-anchor head 141 can be effectively combined with the concrete body.

[0029] In this embodiment, four through-holes 162 are provided. In order to further enhance the bonding between the pear-shaped anchor head 141 and the concrete body, the through-holes 162 may be provided as a larger number of through-holes 162 extending outward from the center of the pear-shaped anchor head 141 .

[0030] The pear-shaped anchor 160 also includes a plurality of rubber strips 163 and a cable tie 164. The rubber strip 163 is integrally formed with the pear-shaped anchor 160. The tail end of the rubber strip 163 has a first connecting hole 165. The cable tie 164 passes through each first connecting hole 165 in turn and is fixed to the staggered sections of the pear-shaped anchor head 141, thereby better fixing the shape.

[0031] The middle part of the pear-shaped anchor 160 is also provided with a plurality of connecting ears 166, which are also integrally formed like the rubber strip 163, and are provided with a second connecting hole and a third connecting hole for connecting the U-shaped connector 167. The connecting rod of the U-shaped connector 167 passes through the second connecting hole and the third connecting hole, and then passes through the second through hole and the third through hole on the anchor plate 150 and is fastened by nuts.

[0032] The outer surface of the pear-shaped anchor 160 is provided with a strip reinforcement rib 168 matching the shape of the pear-shaped self-anchor head 141. The cross-section of the strip reinforcement rib 168 is C-shaped. Two symmetrically arranged strip reinforcement ribs 168 partially cover the single steel strand 140 of the pear-shaped self-anchor head 141 to facilitate the assembly of the pear-shaped anchor 160.

[0033] The anchoring structure also includes a spiral rib 170, which is sleeved outside the anchoring ends of the corrugated pipe 110 and the steel strand 140. The exhaust pipe 130 is higher than the spiral rib 170 to facilitate exhaust during pouring.

[0034] The bellows 110 includes a bellows body 111 and a steel liner 112 fixedly arranged at the end of the bellows body 111. The other end of the steel liner 112 is threadedly connected to the restraint ring 120. The cross-sectional shape of the steel liner 112 is a circular ring, and support feet 113 extend downward on both sides of the middle of the circular ring. The length of the support feet 113 is shorter than the radius of the circular ring.

[0035] A steel lining 112 is provided at the end of the corrugated pipe 110 to fix the position of the corrugated pipe 110 . When an earthquake occurs, the steel lining 112 contacts the foundation. The added steel lining 112 can share the pipe stress, thereby improving the earthquake resistance of the anchoring end.

[0036] There are multiple anchor plates 150 , and one anchor plate 150 is connected to one or more steel strands 140 . Using multiple anchor plates 150 facilitates the distribution of the pear-shaped anchors 160 and increases the anchoring performance of the pear-shaped anchors 160 .

[0037] In summary, in the utility model, the anchoring structure of the fixed end is improved, a pear-shaped anchor 160 is inserted into the pear-shaped self-anchor head 141 of the steel strand 140, and then concrete slurry is injected into the pear-shaped anchor 160. After the injection is completed, the pear-shaped anchor 160 bulges to fill the internal space of the pear-shaped self-anchor head 141, so that the anchoring structure can reduce the squeezing of the pear-shaped self-anchor head 141 during assembly, causing the pear-shaped self-anchor head 141 to deform or reduce its diameter, thereby reducing the anchoring effect.

[0038] This specification describes examples of embodiments of the utility model, and it is not intended that these embodiments illustrate and describe all possible forms of the utility model. It should be understood that the embodiments in the specification can be implemented in a variety of alternative forms. The drawings do not need to be drawn to scale; some features can be enlarged or reduced to show the details of specific components. The specific structural and functional details disclosed should not be interpreted as limiting, but are merely representative bases for teaching those skilled in the art to implement the utility model in various forms. It should be understood by those skilled in the art that the multiple features illustrated and described with reference to any of the drawings can be combined with the features illustrated in one or more other drawings to form embodiments that are not explicitly described or described. The described combined features provide representative embodiments for typical applications. However, various combinations and variations of features consistent with the teachings of the utility model can be used for specific applications or implementations as needed.

[0039] The above description is only the preferred embodiment of the utility model, and is not intended to limit the utility model. For those skilled in the art, the utility model can have various modifications and changes. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.

Claims

1. A YMH fixed end anchoring structure, characterized in that: The anchoring structure includes: a bellows, a restraining ring, an exhaust pipe, a steel strand, an anchor plate and a pear-shaped anchor. A plurality of steel strands are arranged in the bellows. A restraining ring is arranged at one end of the bellows. The steel strands pass through the restraining ring and then pass through the first through hole on the anchor plate. The tail end of each steel strand is pre-pressed into a pear-shaped self-anchor head by an embossing machine. The pear-shaped anchor is a rubber bag with a one-way valve and a pair of through holes in the middle. The rubber bag swells and fills the internal space of the pear-shaped self-anchor head.

2. The YMH fixed end anchoring structure according to claim 1, characterized in that: The pear-shaped anchor also includes a plurality of rubber strips and cable ties. The rubber strips are integrally formed with the pear-shaped anchor. The tail end of the rubber strip has a first connecting hole. The cable ties are fixed to the staggered sections of the pear-shaped anchor head after passing through each first connecting hole in turn.

3. The YMH fixed end anchoring structure according to claim 1, characterized in that: A plurality of connecting ears are also provided in the middle part of the pear-shaped anchor, and a second connecting hole and a third connecting hole are provided on the connecting ears; the pear-shaped anchor also includes a U-shaped connecting piece, and the connecting rod of the U-shaped connecting piece passes through the second connecting hole and the third connecting hole, and then passes through the second through hole and the third through hole on the anchor plate and is fastened by a nut.

4. The YMH fixed end anchoring structure according to claim 1, characterized in that: The outer surface of the pear-shaped anchor is provided with a strip reinforcement rib matching the shape of the pear-shaped anchor head, and the cross section of the strip reinforcement rib is C-shaped.

5. The YMH fixed end anchoring structure according to claim 1, characterized in that: The anchoring structure also includes a spiral rib, which is sleeved outside the corrugated pipe and the anchoring end of the steel strand, and the height of the exhaust pipe exceeds the outside of the spiral rib.

6. The YMH fixed end anchoring structure according to claim 1, characterized in that: The bellows includes a bellows body and a steel liner fixedly arranged at the end of the bellows body, the other end of the steel liner is threadedly connected to the restraint ring, the cross-sectional shape of the steel liner is a circular ring, wherein both sides of the middle of the circular ring also extend downward with supporting feet, and the length of the supporting feet is shorter than the radius of the circular ring.

7. The YMH fixed end anchoring structure according to claim 1, characterized in that: There are multiple anchor plates, and one anchor plate is connected to one or more steel strands.

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