CN213038205U - Prestressed anchorage utensil is used in bridge construction - Google Patents

Abstract

The utility model relates to a prestressed anchorage utensil for bridge construction, including the bellows, the one end of bellows is equipped with the connecting pipe, cup joint on the connecting pipe and be equipped with first spring, the one end of keeping away from the bellows on the connecting pipe is equipped with the anchor backing plate, the one end level of keeping away from the connecting pipe on the anchor backing plate is equipped with the hydro-cylinder, the front end extension of hydro-cylinder is equipped with cup joint section of thick bamboo, the side of cup joint section of thick bamboo is equipped with a plurality of fixed plates along its axial, equidistant screw thread through-hole that is equipped with along the axial of cup joint section of thick bamboo on the fixed plate, the relevant position; the movable barrel is sleeved in the sleeving barrel, a connecting hole matched with the through hole is formed in the corresponding position of the side face of the movable barrel, a working anchor plate is arranged at one end, far away from the sleeving barrel, of the movable barrel, a plurality of mounting holes are formed in the working anchor plate, and an annular clamping sleeve is arranged on each mounting hole. The utility model provides a prestressed anchorage utensil for bridge construction, convenient operation, easy locking and avoid steel strand wires to kick-back.

Description

Prestressed anchorage utensil is used in bridge construction

Technical Field

The utility model relates to a bridge construction equipment technical field, especially a prestressed anchorage utensil for bridge construction.

Background

The prestressed anchorage utensil is extensive in highway and bridge construction application, and it is taut with the inside steel strand wires of concrete and produces the prestressing force, can avoid or postpone the fracture scheduling problem of concrete structure, and the most steel strand wires that use of current prestressed anchorage utensil use the oil pressure to come the tensioning steel strand wires, but the steel strand wires easily takes place to kick-back after long-time, causes the prestressing force loss, and then reduces the life of highway and bridge structures.

The Chinese utility model with publication number CN209010978U discloses a prestressed anchorage device for bridge construction, which comprises a corrugated pipe, the left end of the corrugated pipe is provided with a connecting pipe, the left end of the connecting pipe is connected with an anchor backing plate provided with an inner hole, an oil cylinder is arranged on the left side of the anchor backing plate, an oil filling port is arranged at the upper end of the oil cylinder, an oil baffle plate is arranged in the oil cylinder, a movable plug is wrapped on the outer side of the oil baffle plate, fan-shaped movable grooves parallel to the axis are formed in the top and the bottom of the movable plug, and the outer surface of the movable plug is provided with sector locking grooves which are vertical to the axial line and are symmetrical up and down, the left side array of the oil cylinder is provided with an annular locking wheel which is sleeved with the movable plug, the inner wall of the locking wheel is fixedly connected with a locking plate which is matched with the movable groove, the left end of the movable plug is provided with a working anchor plate, through holes distributed in an annular shape penetrate through the working anchor plate, an annular clamping sleeve is installed in each through hole, and a steel strand is clamped and fixed in each clamping sleeve. It has advantages of convenient operation, easy locking and avoiding springback. However, because the annular locking wheels are sleeved on the oil cylinder in an array manner, two adjacent annular locking wheels are in close contact with each other, and any one of the annular locking wheels is difficult to rotate, so that large friction force needs to be overcome.

In view of the above problems, it is desirable to provide a prestressed anchorage device for bridge construction.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a prestressed anchorage utensil for bridge construction, convenient operation, easy locking and avoid the steel strand wires to kick-back.

In order to achieve the purpose of the utility model, the prestressed anchorage device for bridge construction comprises a corrugated pipe, wherein one end of the corrugated pipe is provided with a connecting pipe, the connecting pipe is sleeved with a first spring, one end of the connecting pipe, which is far away from the corrugated pipe, is provided with an anchor backing plate, one end of the anchor backing plate, which is far away from the connecting pipe, is horizontally provided with an oil cylinder, the oil cylinder is provided with an oil inlet, the front end of the oil cylinder is extended and provided with a sleeve joint cylinder, the side surface of the sleeve joint cylinder is provided with a plurality of fixed plates along the axial direction of the sleeve joint cylinder, the fixed plates are provided with threaded through holes at equal intervals along the axial direction of the sleeve joint cylinder, the; the movable sleeve is sleeved in the sleeve connecting cylinder, a connecting hole matched with the through hole is formed in the corresponding position of the side face of the movable sleeve, a working anchor plate is arranged at one end, far away from the sleeve connecting cylinder, of the movable sleeve, a plurality of mounting holes are formed in the working anchor plate, an annular jacket is arranged on the mounting holes, and a steel strand is clamped and fixed in the annular jacket.

Preferably, the number of the fixing plates is three, and the fixing plates are distributed on the side surface of the socket sleeve at equal intervals.

Preferably, the first spring is a pagoda-shaped spring.

Preferably, the bolt is sleeved with a second spring.

The working principle is as follows: firstly, the steel strand wires in the corrugated pipe penetrate through the connecting pipe and the anchor backing plate respectively, then penetrate into the movable cylinder through the oil cylinder, finally, the movable cylinder is clamped and fixed through the annular clamping sleeve arranged on the working anchor plate, hydraulic oil is added from the oil inlet, the hydraulic oil pushes the movable cylinder to move forwards, so that the steel strand wires are tensioned, and after the steel strand wires are pulled out of a proper position, bolts at corresponding positions on the fixing plate are pressed, and the movable cylinder is fixed.

The utility model discloses a prestressed anchorage utensil for bridge construction compares with prior art and has following advantage:

(1) the sleeve joint barrel is provided with the fixing plates, and the bolts are arranged on the fixing plates, so that the movable barrel reaching a proper position can be quickly and stably fixed, and the steel strand is effectively prevented from rebounding;

(2) simple structure and convenient and fast use.

Drawings

FIG. 1 is a schematic structural view of a bellows;

FIG. 2 is an enlarged view of a portion of the bolt of FIG. 1;

FIG. 3 is a schematic structural diagram of a prestressed anchorage device for bridge construction according to the present embodiment 1;

FIG. 4 is a schematic structural diagram of a prestressed anchorage device for bridge construction according to the present embodiment 2;

FIG. 5 is an enlarged view of a portion of the working anchor plate of FIG. 4;

FIG. 6 is a schematic structural view of a prestressed anchorage device for bridge construction, in which the first spring is a pagoda-shaped spring 1;

fig. 7 is a schematic structural diagram 2 of a prestressed anchorage device for bridge construction, in which the first spring is a pagoda-shaped spring.

Detailed Description

The present invention will be further described with reference to the accompanying drawings and specific embodiments.

As shown in fig. 1-7, a prestressed anchorage device for bridge construction includes a corrugated pipe 1, a connecting pipe 2 is arranged at one end of the corrugated pipe 1, a first spring 13 is sleeved on the connecting pipe 2, an anchor backing plate 3 is arranged at one end of the connecting pipe 2, which is far away from the corrugated pipe 1, an oil cylinder 4 is horizontally arranged at one end of the anchor backing plate 3, which is far away from the connecting pipe 2, an oil inlet is arranged on the oil cylinder 4, a sleeve 5 is extended from the front end of the oil cylinder 4, a plurality of fixing plates 10 are arranged on the side surface of the sleeve 5 along the axial direction thereof, threaded through holes are arranged on the fixing plates 10 at equal intervals along the axial direction of the sleeve 5, through holes matched with the threaded through holes are arranged at corresponding positions on the sleeve 5, and; the sleeve joint barrel is characterized in that a movable barrel 7 is sleeved in the sleeve joint barrel 5, a connecting hole 8 matched with the through hole is formed in the corresponding position of the side face of the movable barrel 7, a working anchor plate 9 is arranged at one end, far away from the sleeve joint barrel 5, of the movable barrel 7, a plurality of mounting holes 14 are formed in the working anchor plate 9, an annular clamping sleeve 15 is arranged on each mounting hole 14, and a steel strand is clamped and fixed in the annular clamping sleeve 15.

Further, the number of the fixing plates 10 is three, and the fixing plates are distributed on the side surface of the sleeve joint 5 at equal intervals; with the stability of the triangle, the movable barrel 7 can be firmly fixed by the bolt when it slides to a proper position.

Further, the first spring 13 is a pagoda-shaped spring, and in the same installation space, the pressure born by the same-volume pagoda-shaped spring is larger than that born by a common compression spring, and accordingly, more energy can be stored, and the higher pressure can be born under the same deformation amount.

Furthermore, the bolt 11 is sleeved with the second spring 12, so that the bolt 11 can be effectively prevented from loosening, the movable cylinder 7 is firmly fixed, and the steel strand is prevented from loosening.

The working principle is as follows: firstly, the steel strand wires in the corrugated pipe 1 penetrate through the connecting pipe 2 and the anchor backing plate 3 respectively, then penetrate into the movable cylinder 7 through the oil cylinder 4, are clamped and fixed through the annular clamping sleeve 15 installed on the working anchor plate 9, hydraulic oil is added from the oil inlet, the hydraulic oil pushes the movable cylinder 7 to move forwards, so that the steel strand wires are tensioned, and after the steel strand wires are pulled out of a proper position, the bolts 11 at corresponding positions on the fixing plate are pressed, and the movable cylinder 7 is fixed.

In the description of the present specification, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicate orientations or positional relationships based on those shown in the drawings, and are used merely for convenience of describing the technical solutions of the present patent and for simplification of the description, but do not indicate or imply that the referred devices or elements must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be interpreted as limiting the present patent application.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of this patent application, "plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.

In this specification, unless expressly stated or limited otherwise, the terms "mounted," "connected," and "fixed" are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integral to one another; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meanings of the above terms in the present specification can be understood by those of ordinary skill in the art as appropriate.

In this specification, unless explicitly stated or limited otherwise, a first feature may be "on" or "under" a second feature such that the first and second features are in direct contact, or the first and second features are in indirect contact via an intermediate. Also, a first feature "on," "over," and "above" a second feature may be directly or diagonally above the second feature, or may simply indicate that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature may be directly under or obliquely under the first feature, or may simply mean that the first feature is at a lesser elevation than the second feature.

In the description herein, references to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above are not necessarily intended to refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, various embodiments or examples and features of different embodiments or examples described in this specification can be combined and combined by one skilled in the art without contradiction.

Although embodiments of the present invention have been shown and described, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention, and that variations, modifications, substitutions and alterations can be made to the above embodiments by those of ordinary skill in the art without departing from the scope of the present invention.

Claims (4)

1. The prestressed anchorage device for bridge building construction is characterized by comprising a corrugated pipe, wherein one end of the corrugated pipe is provided with a connecting pipe, the connecting pipe is sleeved with a first spring, one end of the connecting pipe, which is far away from the corrugated pipe, is provided with an anchor backing plate, one end of the anchor backing plate, which is far away from the connecting pipe, is horizontally provided with an oil cylinder, the oil cylinder is provided with an oil inlet, the front end of the oil cylinder is extended and provided with a sleeve joint cylinder, the side surface of the sleeve joint cylinder is provided with a plurality of fixing plates along the axial direction of the sleeve joint cylinder, the fixing plates are provided with threaded through holes at equal intervals along the axial direction of the sleeve joint cylinder, the corresponding position on; the movable sleeve is sleeved in the sleeve connecting cylinder, a connecting hole matched with the through hole is formed in the corresponding position of the side face of the movable sleeve, a working anchor plate is arranged at one end, far away from the sleeve connecting cylinder, of the movable sleeve, a plurality of mounting holes are formed in the working anchor plate, an annular jacket is arranged on the mounting holes, and a steel strand is clamped and fixed in the annular jacket.

2. The prestressed anchorage for bridge construction according to claim 1, wherein the number of the fixing plates is three, and the fixing plates are equally spaced on the side surface of the sleeve barrel.

3. The prestressed anchorage device for bridge construction according to claim 1, wherein said first spring is a pagoda-shaped spring.

4. The prestressed anchorage device for bridge construction according to claim 1, wherein a second spring is sleeved on the bolt.

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