Vertical prestress low-retraction anchorage device

Abstract

A vertical prestress low-retraction anchorage device comprises an anchor ring (10) and a clamping piece (20) used for being meshed with a steel strand (70), one side of the anchor ring (10) is provided with a fixing column (30) arranged on the steel strand (70) in a sleeved mode, the other side of the anchor ring (10) is provided with a double-end bolt (40) arranged on the steel strand (70) in a sleeved mode, the anchor ring (10) is in a cylindrical shape, and the clamping piece (20) is used for being meshed with the steel strand (70). The anchor ring (10) is internally provided with a through hole for containing the clamping piece (20) and the steel strand (70), the outer surface of the end, close to the stud (40), of the clamping piece (20) is provided with a groove (21) for containing an elastic ring (50), the stud (40) is in threaded connection with the anchor ring (10), and the stud (40) is further in threaded connection with a nut (60). The two anchor bearing plates can be adjusted by adjusting the anchorage device according to the length or the position of a target object, so that the construction complexity and the time cost are reduced, and the safety and the durability of the structure are guaranteed.

Description

TECHNICAL FIELD

[0001] The utility model relates to bridge engineering technical field especially a vertical pre -stress low retraction anchorage device. BACKGROUND

[0002] The bridge cable structure is a bridge with cable (or steel chain) suspended and anchored on both banks (or both ends of the bridge) as the main load-bearing component of the superstructure, the cable geometry is determined by the force balance condition, generally close to parabola, many hangers are hung down from the cable to hang the bridge deck, and stiffening beams are usually arranged between the bridge deck and the hanger to form a combined system with the cable to reduce the deflection deformation caused by the load. The anchoring of the bridge cable is usually realized by an anchorage device.

[0003] The utility model discloses a kind of pre-stressed anchorage devices for highway bridge construction, including steel strand and backing plate, the surface of the steel strand is fixedly connected with the inside of backing plate, the steel strand includes strand body and protective sleeve, and the surface of strand body is adhered with the inner wall of protective sleeve by adhesive, the left side of the backing plate is fixedly connected with anchor ring, and the left end of anchor ring is fixedly connected with fixed column, the inside of anchor ring and fixed column is fixedly connected with the surface of steel strand, the left side of the fixed column is movably connected with clamping piece, and the inner wall of clamping piece is in contact with the surface of steel strand.In construction process, if the length, position and the like of pre-stressed tendon need to be adjusted, the anchorage device cannot be adjusted, and it may be necessary to reposition and install the anchorage device, increasing the complexity and time cost of construction;After the above-mentioned anchorage device is installed and tensioning is completed, if insufficient or excessive pre-stress is found, it cannot be compensated by adjusting the anchorage device, which may cause the pre-stress borne by the structure to not meet the design requirements, affecting the safety and durability of the structure.

[0004] Therefore, the prior art needs to be improved and improved. UTILITY MODEL CONTENTS

[0005] In view of the deficiencies in the prior art, the purpose of the utility model is to provide a vertical pre-stressed low-retraction anchorage device that can adjust the pre-stress.

[0006] To achieve the above-mentioned purpose, the technical scheme adopted by the utility model is:

[0007] A vertical pre-stressed low-retraction anchorage device, comprising an anchor ring and a clamping piece for engaging a steel strand, one side of the anchor ring is provided with a fixed column sleeved on the steel strand, the other side is provided with a double-headed bolt sleeved on the steel strand, the anchor ring is cylindrical, a through hole is formed in the anchor ring to accommodate the clamping piece and the steel strand, a groove is formed in the outer surface of the end of the clamping piece close to the double-headed bolt to accommodate an elastic ring, the double-headed bolt is threadedly connected with the anchor ring, and the double-headed bolt is further threadedly connected with a nut.

[0008] As a further scheme of the utility model, the cross section of the elastic ring is circular, and the depth of the groove is greater than the diameter of the elastic ring.

[0009] As a further scheme of the utility model, the through hole gradually decreases towards the cross section of the fixed column.

[0010] As a further scheme of the utility model, the outer wall of the clamping piece is provided with a gap along the axial direction.

[0011] As a further scheme of the utility model, the stud bolt comprises a small-diameter threaded section, a large-diameter threaded section and a connecting plate arranged between the small-diameter threaded section and the large-diameter threaded section, the small-diameter threaded section is threadedly connected with the anchor ring, and the large-diameter threaded section is threadedly connected with the nut.

[0012] As a further scheme of the utility model, the diameter of the end portion of the clamping piece close to the stud bolt is less than the outer diameter of the small-diameter threaded section.

[0013] As a further scheme of the utility model, the diameter of the connecting plate is greater than the outer diameter of the large-diameter threaded section.

[0014] Compared with the prior art, the utility model has the beneficial effects that:

[0015] Due to the above-mentioned structure design, i.e. comprising a fixed column, an anchor ring, a clamping piece arranged in the anchor ring, a stud bolt threadedly connected with the anchor ring and a nut also threadedly connected with the stud bolt, during installation, the anchor pads for fixing target objects are arranged on the steel strand on the inner side of the fixed column and on the stud bolt, since the nut is threadedly connected with the stud bolt, the two anchor pads can be adjusted by adjusting the anchor device according to the length or position of the target object, thereby reducing the complexity and time cost of construction and ensuring the safety and durability of the structure. BRIEF DESCRIPTION OF DRAWINGS

[0016] ATTACHED Figure 1 It is a structural schematic diagram of the utility model embodiment;

[0017] ATTACHED Figure 2 It is an exploded structural schematic diagram of the utility model embodiment;

[0018] ATTACHED Figure 3 It is a schematic diagram when the utility model embodiment is applied.

[0019] The reference signs in the drawings are as follows:

[0020] 10-anchor ring, 20-clamping piece, 30-fixed column, 40-stud bolt, 50-elastic ring, 60-nut, 70-steel strand, 80-anchor pad;

[0021] 21 - recess, 22 - slit;

[0022] 41 - small-diameter threaded section, 42 - large-diameter threaded section, 43 - connecting plate. DETAILED DESCRIPTION

[0023] The utility model will be described in further detail below in combination with the drawings:

[0024] The embodiments described with reference to the drawings are exemplary and are intended to serve for the explanation of the present application and cannot be understood as a limitation of the present application. In the description of the present application, it is to be understood that the orientations or positional relationships indicated by the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise" are based on the orientations or positional relationships shown in the drawings and are only for the convenience of describing the present application and simplifying the description and cannot be understood as indicating or implying that the devices or elements indicated must have a particular orientation, be constructed and operated in a particular orientation and therefore cannot be understood as a limitation of the present application. In addition, the terms "first", "second" are only for the purpose of description and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the technical features indicated. Therefore, the features defined with "first", "second" can explicitly or implicitly include one or more of the features.

[0025] In the description of the present application, the meaning of "several", "a plurality of" is two or more than two, unless otherwise explicitly specified and limited. In the present application, unless otherwise explicitly specified and limited, the terms "mounting", "connection", "connection", "fixing" and the like should be understood broadly, for example, can be fixedly connected, can be detachably connected, or integrally connected; can be mechanically connected, or electrically connected; can be directly connected, or indirectly connected through an intermediate medium, or the communication inside two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0026] In the present application, unless otherwise explicitly specified and limited, the "upper" or "lower" of the first feature to the second feature can include that the first and second features are in direct contact, or that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, the "upper", "upper" and "upper" of the first feature to the second feature include that the first feature is directly above and obliquely above the second feature, or only indicates that the horizontal height of the first feature is higher than that of the second feature. The "below", "below" and "below" of the first feature to the second feature include that the first feature is directly above and obliquely above the second feature, or only indicates that the horizontal height of the first feature is less than that of the second feature. Embodiments

[0027] As shown in Figures 1-2 The vertical pre-stressed low-retraction anchorage device of the present application comprises an anchor ring 10 and a clamping piece 20 for engaging a steel strand 70, one side of the anchor ring 10 is provided with a fixing column 30 sleeved on the steel strand 70, and the other side is provided with a stud 40 sleeved on the steel strand 70, the anchor ring 10 is in a cylindrical shape, a through hole for accommodating the clamping piece 20 and the steel strand 70 is formed in the anchor ring 10, the cross section of the through hole gradually decreases towards the fixing column 30, a groove 21 for accommodating an elastic ring 50 is formed on the outer surface of the end of the clamping piece 20 close to the stud 40, the stud 40 is threadedly connected with the anchor ring 10, and the stud 40 is further threadedly connected with a nut 60, through the above structural design, when installed, the steel strand on the inner side of the fixing column 30 and the stud 40 are each provided with an anchor pad 80 for fixing a target object, since the nut 60 is threadedly connected with the stud 40, the two anchor pads 80 can be adjusted by adjusting the anchorage device according to the length or position of the target object, thereby reducing the complexity and time cost of construction and ensuring the safety and durability of the structure.

[0028] Specifically, the cross section of the elastic ring 50 is circular, and the depth of the groove 21 is greater than the diameter of the elastic ring 50.

[0029] Specifically, a slit 22 is arranged on the outer wall of the clamping piece 20 in the axial direction, so that the clamping piece 20 can be well engaged with the steel strand 70.

[0030] Specifically, the stud 40 comprises a small-diameter threaded section 41, a large-diameter threaded section 42 and a connecting plate 43 arranged between the small-diameter threaded section 41 and the large-diameter threaded section 42, the small-diameter threaded section 41 is threadedly connected with the anchor ring 10, and the large-diameter threaded section 42 is threadedly connected with the nut 60, through the above structural design, one of the anchor pads 80 is arranged between the nut 60 and the connecting plate 43, so that the pre-stress between the two anchor pads 80 can be adjusted by the nut 60.

[0031] Specifically, the diameter of the end of the clamping piece 20 close to the stud 40 is smaller than the outer diameter of the small-diameter threaded section 41, and the diameter of the connecting plate 43 is greater than the outer diameter of the large-diameter threaded section 42.

[0032] In summary, the present application solves the problems in the prior art through the above structural design, and has the characteristics of reasonable structure, low cost, high safety and the like.

[0033] Although the embodiments of the present application have been shown and described, it is to be understood that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present application, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A vertical prestressed low-retraction anchorage, characterized in that: The utility model provides an anchor ring (10) and a clamp piece (20) for engaging a steel strand (70), one side of the anchor ring (10) is provided with a fixed column (30) sleeved on the steel strand (70), the other side is provided with a stud (40) sleeved on the steel strand (70), the anchor ring (10) is cylindrical, a through hole for accommodating the clamp piece (20) and the steel strand (70) is formed in the anchor ring (10), a recess (21) for accommodating an elastic ring (50) is formed on the end surface of the clamp piece (20) close to the stud (40), the stud (40) is threadedly connected with the anchor ring (10), and the stud (40) is further threadedly connected with a nut (60).

2. The vertical prestressed low-retraction anchor of claim 1, wherein: The elastic ring (50) is circular in cross section, and the depth of the recess (21) is greater than the diameter of the elastic ring (50).

3. The vertical prestressed low-retraction anchor of claim 2, wherein: The cross section of the through hole gradually decreases towards the fixed column (30).

4. The vertical pre-stressed low-retraction anchorage as claimed in claim 3, wherein: An axial gap (22) is formed in the outer wall of the clamp piece (20).

5. The vertical prestressed low-retraction anchor of claim 4, wherein: The stud (40) comprises a small-diameter threaded section (41), a large-diameter threaded section (42) and a connecting plate (43) arranged between the small-diameter threaded section (41) and the large-diameter threaded section (42), the small-diameter threaded section (41) is threadedly connected with the anchor ring (10), and the large-diameter threaded section (42) is threadedly connected with the nut (60).

6. The vertical prestressed low-retraction anchor of claim 5, wherein: The diameter of the end of the clamp piece (20) close to the stud (40) is smaller than the outer diameter of the small-diameter threaded section (41).

7. The vertical prestressed low-retraction anchor of claim 6, wherein: The diameter of the connecting plate (43) is greater than the outer diameter of the large-diameter threaded section (42).

Images