CN219429527U - PC track beam turning device - Google Patents

Abstract

The utility model belongs to the technical field of track beam construction, and particularly relates to a PC track beam overturning device which comprises a section steel support frame, wherein through holes are formed in the side parts of two ends of the section steel support frame; the opposite-pulling screw rods are symmetrically arranged on the inner sides of the two section steel support frames, and the two section steel support frames are connected through the opposite-pulling screw rods to form a closed beam body support unit which surrounds the periphery of the PC track beam; the beam body supporting units are arranged along the length direction of the PC track beam; the utility model solves the problems that in the prior art, each part of a beam turnover device is not detachable, a track beam needs to be hoisted to a turnover frame in advance to be placed and fixed, the flexibility is not enough, the test site is limited by the place of the turnover device, and the turnover test operation cannot be carried out according to the actual site where the track beam is located.

Description

PC track beam turning device

Technical Field

The utility model belongs to the technical field of track beam construction, and particularly relates to a PC track beam overturning device.

Background

In order to meet the static force and fatigue test requirements of the non-stress connecting joint of the profile steel support, two PC track beams (test beams) need to be turned according to test site conditions, a turning device is needed to be utilized, the rigidity of the test beams is guaranteed, and the situation that the core section of the test Liang Zhongkong is damaged in the turning process is avoided.

The Chinese patent with the application number of CN202221059576.1 discloses a track beam overturning device, which comprises an overturning frame, a side limiting frame and a top limiting frame, wherein the overturning frame comprises a fixed seat and an overturning limiting frame hinged with the fixed seat, the fixed seat is fixed on the ground, the overturning limiting frame comprises a hinged seat, a side frame fixed with the hinged seat and a bottom frame fixed with the side frame, and the side frame is detachably connected with the bottom frame; the underframe and the side limiting frame, the side limiting frame and the top limiting frame, and the top limiting frame and the side frame are detachably connected and fixed; and a hanging seat is fixed on the side limiting frame.

However, with further research of the applicant, it is found that, because the components of the beam turning device in the technical scheme are fixedly connected and are not detachable, the track beam needs to be lifted to the turning frame in advance to be placed and fixed, so that the turning operation can be performed on the track beam, the flexibility is insufficient, the turning test can not be performed according to the actual site where the track beam is located, and the test site is limited by the place of the turning device.

Disclosure of Invention

In order to solve the technical problems, the utility model adopts the following technical scheme:

a PC track beam flipping apparatus comprising:

the steel support frame is provided with through holes at the side parts at the two ends;

the opposite-pulling screw rods are symmetrically arranged on the inner sides of the two section steel support frames, and the two section steel support frames are connected through the opposite-pulling screw rods to form a closed beam body support unit which surrounds the periphery of the PC track beam;

the beam body supporting units are arranged along the length direction of the PC track beam;

the beam body supporting units are positioned at the first and the last two groups, and are provided with lifting side lugs which are connected with the outer sides of the profile steel supporting frames.

Further, the number of the lifting side lugs is four, and the lifting side lugs are respectively connected to the outer sides of two ends of the two section steel support frames.

Further, each group of the beam body supporting units is provided with four opposite-pulling screws.

Further, the outer side of the section steel support frame is provided with a nut connected with the opposite-pulling screw rod.

Further, lifting holes are formed in the lifting side lugs.

Further, the diameter of the lifting hole is 50MM.

Compared with the prior art, the utility model has the following beneficial effects:

the turnover device can effectively meet the turnover test requirement of the PC track beam, and the turnover device adopts the beam body supporting unit formed by combining the plurality of section steel supporting frames and the opposite-pulling screw rods, can be flexibly disassembled and stored, can move all parts of the turnover device to the place where the track beam is spliced when the turnover test is required to be carried out on the PC track beam, saves complex operation of transferring the track beam in advance, increases the flexibility of the turnover test, ensures the construction quality and improves the construction efficiency.

Drawings

FIG. 1 is a schematic perspective view of a center sill support unit of an embodiment of a PC track sill turnover apparatus of the present utility model;

FIG. 2 is a schematic perspective view of a medium-sized steel support frame of an embodiment of a PC track beam turnover device according to the present utility model;

fig. 3 is a schematic perspective view of a PC track beam turnover device according to an embodiment of the present utility model, in which a middle-sized steel support frame is added to a lifting lug;

fig. 4 is a schematic diagram of a three-dimensional structure of the utility model when the PC track beam is turned over and lifted for the first time;

FIG. 5 is a schematic diagram of a three-dimensional structure of the utility model during a second overturn hoisting of a PC track beam;

reference numerals in the drawings of the specification include:

the beam body supporting unit 1, the section steel supporting frame 10, the through hole 100, the opposite-pulling screw rod 2, the lifting side lugs 3, the lifting holes 30, the PC track beam 4, the large lifting hook 5 and the small lifting hook 6.

Detailed Description

In order that those skilled in the art will better understand the present utility model, the following technical scheme of the present utility model will be further described with reference to the accompanying drawings and examples.

Wherein the drawings are for illustrative purposes only and are shown in schematic, non-physical, and not intended to be limiting of the present patent; for the purpose of better illustrating embodiments of the utility model, certain elements of the drawings may be omitted, enlarged or reduced and do not represent the size of the actual product; it will be understood by those skilled in the art that certain well-known structures in the drawings and descriptions thereof may be omitted, and that like or similar reference numerals in the drawings correspond to like or similar components in the embodiments of the present utility model; in the description of the present utility model, it should be understood that, if the terms "upper", "lower", "left", "right", "inner", "outer", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, only for convenience in describing the present utility model and simplifying the description, rather than indicating or implying that the apparatus or elements being referred to must have a specific orientation, be constructed and operated in a specific orientation, so that the terms describing the positional relationships in the drawings are merely for exemplary illustration and should not be construed as limiting the present patent, and that the specific meaning of the terms described above may be understood by those of ordinary skill in the art according to specific circumstances.

Examples:

as shown in fig. 1-5, the turnover device for the PC track beam of the present utility model comprises a section steel support frame 10, through holes 100 are formed at the side parts of two ends of the section steel support frame 10, opposite-pull screws 2 are symmetrically arranged at the inner sides of the two section steel support frames 10, the two section steel support frames 10 are connected through the opposite-pull screws 2 to form a beam body support unit 1 which surrounds the periphery of the PC track beam 4 and is closed, nuts connected with the opposite-pull screws 2 are arranged at the outer sides of the section steel support frames 10, wherein the diameter of the opposite-pull screws 2 is 28mm, and the length is 1500mm.

The turnover device can effectively meet the turnover test requirement of the PC track beam 4, and the turnover device adopts the beam body supporting units 1 formed by combining the plurality of profile steel supporting frames 10 and the opposite-pulling screws 2, so that the turnover device can be flexibly detached and stored.

The beam body supporting units 1 are arranged along the length direction of the PC track beam 4, the distance between the beam body supporting units 1 is 1800mm, the 12M PC track beam 4 can be tested, and of course, the device can select reasonable numbers of section steel supporting frames 10 and opposite-pulling screws 2 to be combined into the beam body supporting unit 1 according to the PC track beams 4 with different lengths.

The beam body supporting units 1 are provided with lifting side lugs 3, the lifting side lugs 3 are connected with the outer sides of the profile steel supporting frames 10, the number of the lifting side lugs 3 is four, the lifting side lugs 3 are respectively connected with the outer sides of two ends of the two profile steel supporting frames 10, lifting holes 30 are formed in the lifting side lugs 3, the PC track beam 4 is subjected to force application lifting for subsequent lifting equipment, the lifting side lugs 3 are arranged on the beam body supporting units 1, and a lifting hook is matched with the lifting holes 30 in the lifting side lugs 3, wherein the diameter of the lifting holes 30 is 50MM.

In addition, in order to improve the security and the stability of prefabricated PC track roof beam 4 in hoist and mount upset in-process, the outside of PC track roof beam 4 adopts two rows of symmetrical shaped steel support frames 10, adopts to draw screw rod 2 and bolt-up between the shaped steel support frame 10, can add the rubber pad between shaped steel support frame 10 and the experimental PC track roof beam 4, reduces in the upset in-process, and shaped steel support frame 10 causes wearing and tearing and damage to PC track roof beam 4 surface.

Compared with the technical scheme adopted by the existing PC track beam 4 for overturning, when the overturning test is needed to be carried out on the PC track beam 4, each part of the overturning device can be moved to the site where the PC track beam 4 is spliced, the complex operation of transferring the PC track beam 4 in advance is omitted, the overturning test flexibility is improved, the construction quality is guaranteed, and the construction efficiency is improved.

In addition, the application also provides a turnover method for the PC track beam 4 when the turnover device is used, and the implementation flow of turnover work of the test beam is as follows:

generally, after the concrete strength of the test beam meets the design requirement, the turnover device is installed, the test beam is lifted in a test mode, and finally the test beam is turned over.

Specifically, the integral hoisting and overturning is carried out twice, and the hoisting process is as follows: firstly, lifting a test beam by using a large lifting hook 5, wherein the number and arrangement of lifting points are shown in fig. 4, turning over the test beam by using a small lifting hook 6 after the test beam reaches a certain height, and placing the test beam on the ground after the test beam is turned over by 90 degrees, wherein the number and arrangement of the lifting points are shown in fig. 4; the lifting hook working points are replaced, the number and arrangement positions of the lifting points are shown in fig. 5, and the large lifting hook 5 is used for overturning the test beam, wherein the small lifting hook 6 plays a role in stabilizing in the overturning process.

In the hoisting operation, the hoisting operation is strictly carried out according to a preset hoisting scheme, the safety is paid attention to and the damage of a test piece is prevented in the hoisting process, and the hoisting operation is three-delay, namely slow hoisting, slow turning and slow beam falling;

it should be noted that the performance of the hoisting machine should meet the requirements of the test beam in terms of hoisting safety, stability, etc., and according to the rated weight of the prefabricated PC track beam 4 and under the condition of considering the safety reserve, the hoisting operation is performed by adopting a gantry crane, wherein the large lifting hook 5 and the small lifting hook 6 respectively correspond to 80T and 40T gantry cranes.

The foregoing is merely exemplary of the present utility model, and the specific structures and features well known in the art are not described in any way herein, so that those skilled in the art will be able to ascertain all prior art in the field, and will not be able to ascertain any prior art to which this utility model pertains, without the general knowledge of the skilled person in the field, before the application date or the priority date, to practice the present utility model, with the ability of these skilled persons to perfect and practice this utility model, with the help of the teachings of this application, with some typical known structures or methods not being the obstacle to the practice of this application by those skilled in the art. It should be noted that modifications and improvements can be made by those skilled in the art without departing from the structure of the present utility model, and these should also be considered as the scope of the present utility model, which does not affect the effect of the implementation of the present utility model and the utility of the patent.

Claims (6)

1. A PC track beam flipping apparatus, comprising:

the steel support frame is provided with through holes at the side parts at the two ends;

the opposite-pulling screw rods are symmetrically arranged on the inner sides of the two section steel support frames, and the two section steel support frames are connected through the opposite-pulling screw rods to form a closed beam body support unit which surrounds the periphery of the PC track beam;

the beam body supporting units are arranged along the length direction of the PC track beam;

the beam body supporting units are positioned at the first and the last two groups, and are provided with lifting side lugs which are connected with the outer sides of the profile steel supporting frames.

2. A PC track beam tilting device as defined in claim 1, wherein: the four lifting side lugs are respectively connected to the outer sides of two ends of the two section steel support frames.

3. A PC track beam tilting device according to claim 1 or 2, characterized in that: each group of beam body supporting units is provided with four opposite-pulling screw rods.

4. A PC track beam tilting device as defined in claim 1, wherein: the outer side of the section steel support frame is provided with a nut connected with the opposite-pulling screw rod.

5. A PC track beam tilting device as defined in claim 1, wherein: lifting holes are formed in the lifting side lugs.

6. A PC track beam upender as defined in claim 5, wherein: the diameter of the lifting hole is 50MM.