Accurate positioning tool for embedded sleeve of high-speed railway track

Abstract

A high-speed railway track embedded sleeve accurate positioning tool comprises a positioning framework used for being erected and installed on a box girder reinforcing mesh, a plurality of threaded positioning holes allowing bolts to be screwed in are formed in the positioning framework, the center lines of the threaded positioning holes extend in the vertical direction, and the threaded positioning holes are the same as internal threads of an embedded sleeve in specification. According to the tool, self-locking positioning is achieved by screwing the bolts into the threaded positioning holes of the positioning framework, then the pre-embedded sleeves are screwed to the ends of the bolts for self-locking positioning, the positioning framework is installed on a box girder reinforcing mesh corresponding to the required point positions of the pre-embedded sleeves, each pre-embedded sleeve can be adjusted to the designed elevation position by adjusting the bolts, the perpendicularity is high, and the positioning accuracy is high. And the pre-embedded sleeves are linear and straight, so that the impact influence of concrete flow can be resisted in the concrete pouring process, and the modular mounting efficiency is high.

Description

TECHNICAL FIELD

[0001] The utility model relates to high -speed railway construction equipment technical field especially a kind of positioning tool for box girder concrete pouring time fixed track embedded sleeve. BACKGROUND

[0002] In high-speed railway construction, embedded sleeve is crucial for the installation of subsequent railway track slab and other components, and is the basis for the installation of key components such as track slab. Its positioning accuracy directly affects the track smoothness and the safety of railway and bridge structures.

[0003] The traditional embedded sleeve installation process uses manual wire positioning method. This method uses steel wire as a reference by pulling it between adjacent sleepers. Workers manually align the embedded sleeve with the steel wire, adjust the elevation with a level, and temporarily fix it with a steel reinforcement bracket. This method is affected by steel wire deflection, steel deviation, manual binding error, and concrete flow impact, resulting in inaccurate embedded sleeve position, irregular line, poor perpendicularity, and difficulty in controlling the top elevation of the embedded sleeve, among other issues.

[0004] Therefore, there is a market demand for a modular and efficient high-speed railway track embedded sleeve precision positioning tool. INVENTION CONTENTS

[0005] The technical problem to be solved by the utility model is to provide a high-speed railway track embedded sleeve precision positioning tool.

[0006] To solve the above technical problems, the utility model adopts the following technical scheme: a high-speed railway track embedded sleeve precision positioning tool includes a positioning framework for erecting and installing on a box girder reinforcement mesh. The positioning framework has multiple threaded positioning holes for screwing bolts. The center line of the threaded positioning hole extends in the up-down direction. The threaded positioning hole has the same thread specification as the embedded sleeve.

[0007] In some embodiments, the positioning framework includes at least one longitudinal framework and at least one transverse framework welded to the at least one longitudinal framework. The longitudinal framework and the transverse framework both have the threaded positioning holes.

[0008] In some embodiments, the positioning framework includes two parallel longitudinal frameworks and at least two transverse frameworks welded and fixed between the two longitudinal frameworks. The at least two transverse frameworks are evenly distributed between the two longitudinal frameworks, forming multiple frame-shaped spaces.

[0009] In some embodiments, transverse angle steels for longitudinal assembly are welded between the ends of the two longitudinal frameworks, forming a rectangular grid positioning frame.

[0010] In some embodiments, the positioning framework is made of longitudinal framework and transverse framework welded by channel steel.

[0011] In some embodiments, further comprising a plurality of bolts matching the internal thread of the pre-buried sleeve, each of the bolts is threadedly installed in the corresponding threaded positioning hole in an up-down adjustable manner.

[0012] In some embodiments, the bolt shank is provided with scale marks.

[0013] In some embodiments, further comprising a plurality of pre-buried sleeves, each of the pre-buried sleeves is threadedly installed at the lower end of the corresponding bolt in an up-down adjustable manner.

[0014] In some embodiments, the positioning framework is detachably installed on the box girder reinforcement mesh.

[0015] In some embodiments, further comprising a plurality of clamps fixed on the box girder reinforcement mesh, the clamps are formed with clamping grooves with upward opening, and the positioning framework is embedded in the clamping grooves of all the clamps.

[0016] The scope of the present application is not limited to the technical solutions formed by the specific combination of the above technical features, and should also cover other technical solutions formed by any combination of the above technical features or their equivalent features. For example, the above features are replaced with each other to form technical solutions with similar functions disclosed in the present application (but not limited to).

[0017] Due to the use of the above technical solutions, the present application has the following advantages compared with the prior art: the present application provides a high-speed railway track pre-buried sleeve precise positioning tool, which realizes self-locking positioning by rotating the bolt into the threaded positioning hole of the positioning framework, and then rotates the pre-buried sleeve to the end of the bolt to realize self-locking positioning. The positioning framework is installed on the box girder reinforcement mesh at the required point corresponding to the pre-buried sleeve, and each pre-buried sleeve can be adjusted to the design elevation position by adjusting each bolt, and the perpendicularity is high, the linearity between each pre-buried sleeve is straight, and the influence of concrete flow impact can be resisted during concrete pouring, and the modular installation efficiency is high. BRIEF DESCRIPTION OF DRAWINGS

[0018] ATTACHMENT Figure 1 Fig. 1 is a top view of the high-speed railway track pre-buried sleeve precise positioning tool of the present application;

[0019] ATTACHMENT Figure 2 Fig. 3 is a schematic view of the cooperation between the positioning framework, the bolt and the pre-buried sleeve of the tool during construction;

[0020] Wherein: 1, positioning framework; 11, longitudinal framework; 12, transverse framework; 13, transverse angle steel; 2, bolt; 3, embedded sleeve; 4, clamping piece; 4a, clamping groove; 5, box girder reinforcement net. DETAILED DESCRIPTION

[0021] As shown in the accompanying drawings Figure 1 , 2 A high-speed railway track embedded sleeve precision positioning tool, comprising a positioning framework 1 for erection and installation on the box girder reinforcement net 5, a plurality of threaded positioning holes are provided on the positioning framework 1 for the bolt 2 to be screwed in.

[0022] The shape of the positioning framework 1 is designed based on the linear distribution of a plurality of embedded sleeves. In the present embodiment, the positioning framework 1 includes two parallel longitudinal frameworks 11, two transverse frameworks 12 spaced 2 meters apart welded and fixed between the two longitudinal frameworks 11, the longitudinal frameworks 11 and the transverse frameworks 12 are made of channel steel, the two transverse frameworks 12 are evenly distributed between the two longitudinal frameworks 11, and three evenly spaced frame spaces are separated. Threaded positioning holes are provided on the longitudinal frameworks 11 and the transverse frameworks 12 according to the design size, the center line of the threaded positioning hole extends in the upward and downward direction, and the threaded positioning hole and the embedded sleeve 3 have the same thread specification.

[0023] Two transverse angle steels 13 are respectively welded between the end portions of the two longitudinal frameworks 11, so that the positioning framework 1 forms a rectangular grid positioning frame. The transverse angle steel 13 is used for longitudinal assembly connection between adjacent positioning frameworks 1. Without showing, the adjacent transverse angle steels 13 are connected by steel plate threaded connection, and the steel plate also has threaded positioning holes with the same thread specification as the embedded sleeve.

[0024] In order to facilitate the reuse of the positioning framework 1, each positioning framework 1 is detachably installed on the box girder reinforcement net 5. In order to facilitate the installation and removal of the positioning framework 1, hoisting is preferred, a plurality of clamping pieces 4 are welded or threaded fixed on the box girder reinforcement net 5 corresponding to the positions of the longitudinal frameworks 11 and the transverse frameworks 12, the clamping pieces 4 form clamping grooves 4a opening upward, and the clamping grooves 4a of the clamping pieces 4 correspond to the longitudinal frameworks 11 and the transverse frameworks 12, respectively, that is, the positions of all clamping pieces 4 determine the unique position of the positioning framework 1 on the box girder reinforcement net 5 in the front, back, left and right directions, and are embedded in the clamping grooves 4a of the clamping pieces 4.

[0025] The utility model discloses high -speed railway track pre -buried sleeve precision positioning frock, still include a plurality of bolt 2, adopt M16 bolt in this embodiment, and the inner thread size of bolt 2 size matching pre -buried sleeve, each bolt 2 can be up and down adjustable screw -threaded installation in corresponding thread positioning hole, each pre -buried sleeve 3 can be up and down adjustable screw -threaded installation in corresponding bolt 2 lower end. That is, through the thread positioning hole on the positioning framework, the M16 bolt is locked and self-locked and limited installation, the M16 bolt is screwed into the sleeve and is locked and self-locked and limited installation, forming a sleeve positioning system. The M16 bolt is limited and locked in the thread positioning hole, and the pre -buried sleeve 3 is limited and locked on the M16 bolt, forming two -stage adjustment more convenient to simulate pouring elevation position adjustment, and the actual adjustment height of the pre -buried sleeve 3 is more accurate.

[0026] Based on the pre -buried sleeve positioning construction method of the high -speed railway track pre -buried sleeve precision positioning frock, first, each steel bar is adjusted on the box girder reinforcement net 5;According to the design position of each pre -buried sleeve 3, each clamp 4 is welded on the box girder reinforcement net 5;Each M16 bolt 2 is screwed into the corresponding thread positioning hole on the positioning framework 1;The pre -buried sleeve 3 is screwed into the M16 bolt 2 according to the design elevation position;The positioning framework 1 is lifted, moves, and the corresponding card slot 4a position of each card piece 4 below is lowered, and the positioning framework 1 is uniquely determined on the position of the box girder reinforcement net 5 in the front, rear, left and right directions;The M16 bolt is adjusted according to the design elevation position of the pre -buried sleeve 3. The position of the pre -buried sleeve 3 of the section of railway is installed. If lengthening is required, a second positioning framework 1 is installed by the same operation, and a steel plate is connected between the adjacent transverse angle steels 13 of the front and rear positioning frameworks 1, and the steel plate is also provided with M16 bolts and pre -buried sleeves, the M16 bolts on the steel plate are adjusted according to the design elevation position, so that the pre -buried sleeves on the steel plate also meet the design elevation position, and the installation is completed. By pre -providing bolt positioning holes on the positioning framework 1, the linear straightness of the track pre -buried sleeve can be ensured, and the thread self -locking of the M16 bolt and the thread positioning hole can ensure that the top surface elevations of all pre -buried sleeves 3 are at the same height. Subsequently, concrete is poured on the box girder reinforcement net 5, and after the concrete pouring construction is completed and the strength meets the requirements, all M16 bolts are screwed out of the corresponding pre -buried sleeves, and the adjacent positioning frameworks are separated, so that each positioning framework can be lifted and removed, and finally each clamp 4 protruding upward is cut off.

[0027] The utility model discloses a high -speed railway track pre -buried sleeve precision positioning frock, solves the problem that the traditional pre -buried sleeve installation mode of bridge is greatly influenced by the position of steel bar binding, and is easy to cause the problems, such as inaccurate pre -buried sleeve position, pre -buried linear straightness, poor perpendicularity and difficult control of sleeve top elevation.

[0028] The utility model scheme guarantees that the distance, elevation and perpendicularity of the embedded sleeve meet the design requirements through the positioning framework modular design, and reduces manual intervention. The rigid fixing structure, the channel steel positioning framework frame and the bolt locking are adopted, the impact of the concrete flow in the pouring process is avoided, and the displacement of the embedded sleeve is caused. The module standardization assembly supports quick installation and disassembly, and adapts to the assembly line operation.

[0029] The above examples are only for illustrating the technical concept and characteristics of the utility model, the purpose is to enable the person skilled in the art to understand the content of the utility model and to implement, and cannot limit the protection scope of the utility model. Any equivalent change or modification according to the spirit and essence of the utility model should be covered in the protection scope of the utility model.

Claims

1. A precision positioning fixture for pre-embedded sleeves in high-speed railway tracks, characterized in that: It includes a positioning frame (1) for erecting and installing on the steel mesh (5) of the box girder. The positioning frame (1) has multiple threaded positioning holes for bolts (2) to be screwed in. The center line of the threaded positioning holes extends in the vertical direction. The threaded positioning holes have the same specifications as the internal threads of the pre-embedded sleeve.

2. The high-speed railway track pre-embedded sleeve precision positioning tooling according to claim 1, characterized in that: The positioning frame (1) includes at least one longitudinal frame (11) and at least one transverse frame (12) welded to at least one longitudinal frame (11). The threaded positioning holes are provided on both the longitudinal frame (11) and the transverse frame (12).

3. The high-speed railway track pre-embedded sleeve precision positioning fixture according to claim 2, characterized in that: The positioning frame (1) includes two parallel longitudinal frames (11) and at least two transverse frames (12) welded and fixed between the two longitudinal frames (11). The at least two transverse frames (12) are evenly distributed between the two longitudinal frames (11) to separate multiple frame-shaped spaces.

4. The high-speed railway track pre-embedded sleeve precision positioning fixture according to claim 3, characterized in that: The ends of the two longitudinal skeletons (11) are respectively welded with transverse angle steel (13) for longitudinal assembly and extension, and the positioning skeleton (1) forms a rectangular grid positioning frame.

5. The precision positioning fixture for pre-embedded sleeves in high-speed railway tracks according to claim 1, characterized in that: The positioning frame (1) is formed by welding and fixing a longitudinal frame (11) made of channel steel and a transverse frame (12).

6. The high-speed railway track pre-embedded sleeve precision positioning tooling according to claim 1, characterized in that: It also includes multiple bolts (2) with internal threads that match the pre-embedded sleeves, each of which is threadedly installed in a corresponding threaded positioning hole in an adjustable manner.

7. The high-speed railway track pre-embedded sleeve precision positioning fixture according to claim 6, characterized in that: The bolt (2) has scale markings on its shaft.

8. The high-speed railway track pre-embedded sleeve precision positioning fixture according to claim 6, characterized in that: It also includes multiple pre-embedded sleeves (3), each of which is threadedly installed at the lower end of the corresponding bolt (2) in an adjustable manner.

9. The precision positioning fixture for pre-embedded sleeves in high-speed railway tracks according to claim 1, characterized in that: The positioning frame (1) can be detachably installed on the box girder steel mesh (5).

10. A precision positioning fixture for a high-speed railway track pre-embedded sleeve according to claim 9, characterized in that: It also includes multiple clips (4) fixed on the steel mesh (5) of the box girder, with an upward-facing slot (4a) formed on the clip (4), and the positioning frame (1) is positioned by being embedded in the slot (4a) of all the clips (4).

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