CN217536692U

CN217536692U - Cast-in-place box girder integral frame-falling dismounting device

Info

Publication number: CN217536692U
Application number: CN202221296150.8U
Authority: CN
Inventors: 熊杰; 徐凯; 张志威; 李振; 王磊; 吴朝宪
Original assignee: China National Chemical Engineering No16 Construction Co ltd
Current assignee: China National Chemical Engineering No16 Construction Co ltd
Priority date: 2022-05-27
Filing date: 2022-05-27
Publication date: 2022-10-04
Anticipated expiration: 2032-05-27

Abstract

The utility model discloses a cast-in-place box girder integral frame-falling dismounting device, which comprises a plurality of beam-falling devices, wherein each beam-falling device comprises a suspender of a threaded rod structure, the suspender passes through a vertical preformed hole on the surface of a cast-in-place beam body, the top end of the suspender is connected with an upper beam-falling mechanism, and the bottom end of the suspender is connected with a lower support mechanism; the lower support mechanism is in contact fit with the bracket system. The device has solved prior art construction inconvenience, has required higher problem to the operation environment, has simple structure, and construction convenience can effectively promote the whole efficiency that falls to put up of cast-in-place beam support characteristics.

Description

Cast-in-place box girder integral frame-falling dismounting device

Technical Field

The utility model belongs to the technical field of the bridge construction, in particular to whole frame that falls of cast-in-place box girder demolishs device.

Background

In the removal of the bridge support system, the support system is very difficult to remove because part of projects span roads and rivers, or span the middle of the roads and are soft soil foundations, or the construction access is narrow, the construction site is small, and a large crane cannot work; for example, in the process of removing a steel pipe pile support below a cast-in-place beam bridge floor, a bailey truss above a steel pipe column needs to be removed in advance, then the steel pipe column can be cut, and when the conditions of pier height, narrow access and difficult crane parking are met, the construction mode is very inconvenient; therefore, the cast-in-place box girder integral frame-falling dismounting device needs to be designed to solve the problems.

Disclosure of Invention

The utility model aims to solve the technical problem that a whole device of demolising that falls of cast-in-place box girder is provided, the device have solved prior art construction inconvenience, to the higher problem of operation environmental requirement, have simple structure, construction convenience can effectively promote the whole characteristics of falling a frame efficiency of cast-in-place beam support.

In order to solve the technical problem, the utility model discloses the technical scheme who adopts is: the cast-in-place box girder integral frame falling dismantling device comprises a plurality of beam falling devices, wherein each beam falling device comprises a suspender of a threaded rod structure, the suspender penetrates through a vertical reserved hole in the surface of a cast-in-place girder body, the top end of the suspender is connected with an upper beam falling mechanism, and the bottom end of the suspender is connected with a lower supporting mechanism; the lower support mechanism is in contact fit with the bracket system.

Preferably, the beam falling mechanism comprises a beam falling pedestal, the beam falling pedestal is connected to the surface of the beam body at the upper end of the preformed hole, and the suspender penetrates into the preformed hole through the opening on the surface of the beam falling pedestal.

Furthermore, the beam falling platform base plays a supporting role, and the phenomenon that the pressure intensity is too high due to the fact that a jack directly applies force to the surface of the beam body is avoided; the trompil and the preformed hole diameter of falling the roof beam pedestal all are greater than the jib diameter, and the jib can freely remove in trompil and preformed hole.

Preferably, the upper beam falling mechanism comprises an upper longitudinal beam, the surface of the upper longitudinal beam is provided with a hole to be spliced with the suspension rod, and the upper surface of the upper longitudinal beam is provided with a first locking nut and is in threaded connection with the suspension rod.

Furthermore, a nut is also arranged on the hanging rod between the beam falling pedestal and the upper longitudinal beam, and after the hanging rod is jacked to a certain height, the nut is adjusted to be locked on the upper surface of the beam falling pedestal to play a limiting role, so that the stress of the jack is shared.

Preferably, the upper beam falling mechanism comprises a jack, one end of the jack is connected with the beam falling bench, and the other end of the jack is in interference fit with the lower surface of the upper longitudinal beam.

Preferably, the lower support mechanism comprises a lower longitudinal beam, the surface of the lower longitudinal beam is provided with a hole which is matched with the suspender in an inserting manner, and the lower surface of the lower longitudinal beam is provided with a second locking nut which is in threaded connection with the bottom end of the suspender.

Preferably, the lower longitudinal beam is arranged below the bracket system, and the upper surface of the lower longitudinal beam is in contact fit with the original double-spliced cross beam at the bottom of the bracket system.

The utility model has the advantages that:

this system has effectively solved when running into the mound height, the pavement is narrow, under the operating mode that the loop wheel machine parked the difficulty, when lifting by crane the unable admission of equipment, the support system needs the manual work to progressively demolish, is difficult to the high efficiency problem of falling the frame, through the supporting role that utilizes the roof beam body self of completion, realizes pulling up the support whole through the device that falls the roof beam and provides the holding power, the steel-pipe pile of the direct cutting below of being convenient for, then wholly falls the frame to the support, has effectively improved the operating efficiency.

Drawings

Fig. 1 is a schematic view of the structure of the present invention;

FIG. 2 is a schematic side view of the present invention;

fig. 3 is a schematic structural view of the upper beam falling mechanism of the present invention;

the reference numbers in the figures are: the lifting rod 1, the beam body 11, the preformed hole 12, the wing plate 13, the steel pipe pile 14, the upper beam falling mechanism 2, the beam falling pedestal 21, the upper longitudinal beam 22, the first locking nut 23, the jack 24, the lower supporting mechanism 3, the lower longitudinal beam 31, the second locking nut 32, the support system 4 and the double-spliced cross beam 41.

Detailed Description

As shown in fig. 1 to 3, the cast-in-place box girder integral frame-falling dismounting device comprises a plurality of beam-falling devices, each beam-falling device comprises a suspender 1 with a threaded rod structure, the suspender 1 penetrates through a vertical preformed hole 12 on the surface of a cast-in-place girder body 11, the top end of the suspender 1 is connected with an upper beam-falling mechanism 2, and the bottom end of the suspender 1 is connected with a lower support mechanism 3; the lower support mechanism 3 is in contact fit with the bracket system 4.

Preferably, the upper beam falling mechanism 2 includes a beam falling base 21, the beam falling base 21 is connected to the surface of the beam body 11 at the upper end of the prepared hole 12, and the suspension rod 1 penetrates the prepared hole 12 through the opening of the surface of the beam falling base 21.

Further, the beam falling pedestal 21 plays a supporting role, so that the phenomenon that the pressure intensity is too high due to the fact that the jack 24 directly applies force to the surface of the beam body 11 is avoided; the diameter of the opening of the beam falling pedestal 21 and the diameter of the prepared hole 12 are both larger than the diameter of the suspender 1, and the suspender 1 can freely move in the opening and the prepared hole 12.

Preferably, the upper beam falling mechanism 2 comprises an upper longitudinal beam 22, a hole is formed in the surface of the upper longitudinal beam 22 to be inserted into the suspension rod 1, and a first locking nut 23 is arranged on the upper surface of the upper longitudinal beam 22 to be in threaded connection with the suspension rod 1.

Further, a nut is also arranged on the suspension rod 1 between the beam falling pedestal 21 and the upper longitudinal beam 22, and after the suspension rod is jacked to a certain height, the nut is adjusted to be locked on the upper surface of the beam falling pedestal 21 to limit the position, so that the stress of the jack 24 is shared.

Preferably, the upper beam dropping mechanism 2 includes a jack 24, one end of the jack 24 is connected to the beam dropping base 21, and the other end thereof is in interference fit with the lower surface of the upper longitudinal beam 22.

Preferably, the lower support mechanism 3 comprises a lower longitudinal beam 31, a hole is formed on the surface of the lower longitudinal beam 31 to be in inserted fit with the suspension rod 1, and a second locking nut 32 is arranged on the lower surface of the lower longitudinal beam 31 to be in threaded connection with the bottom end of the suspension rod 1.

Preferably, the side sill 31 is disposed below the rack system 4, and the upper surface of the side sill 31 is in contact fit with the original double-split cross beam 41 at the bottom of the rack system 4.

The utility model discloses a theory of operation does:

during the use, firstly the suspender 1 passes through the preformed hole 12, the top end is connected and matched with the upper beam falling mechanism 2 above the beam body 11, then the bottom end is in lap joint with the double-spliced cross beam 41 at the bottom of the support system 4 through the lower supporting mechanism 3, finally the jack 24 is driven to jack up the support system 4 integrally, so that the steel pipe pile 14 below the support system 4 is not stressed, then the steel pipe pile 14 is cut off, and finally the support system 4 integrally falls down by utilizing hoisting equipment and the like to finish the frame falling.

The above embodiments are only preferred technical solutions of the present invention, and should not be considered as limitations of the present invention, and the embodiments and features in the embodiments in the present application may be arbitrarily combined with each other without conflict. The protection scope of the present invention shall be defined by the claims and the equivalents of the technical features in the claims. Namely, equivalent alterations and modifications within the scope of the invention are also within the scope of the invention.

Claims

1. The whole frame that falls of cast-in-place box girder demolishs device, its characterized in that: the device comprises a plurality of beam falling devices, wherein each beam falling device comprises a suspender (1) with a threaded rod structure, the suspender (1) penetrates through a vertical preformed hole (12) on the surface of a cast-in-situ beam body (11), the top end of the suspender (1) is connected with an upper beam falling mechanism (2), and the bottom end of the suspender (1) is connected with a lower support mechanism (3); the lower support mechanism (3) is in contact fit with the bracket system (4).

2. The cast-in-place box girder integral frame-falling dismounting device as claimed in claim 1, is characterized in that: the beam falling mechanism (2) comprises a beam falling pedestal (21), the beam falling pedestal (21) is connected to the surface of the beam body (11) at the upper end of the reserved hole (12), and the suspender (1) penetrates into the reserved hole (12) through a hole on the surface of the beam falling pedestal (21).

3. The cast-in-place box beam integral frame-falling dismounting device as claimed in claim 1, wherein: the upper beam falling mechanism (2) comprises an upper longitudinal beam (22), a hole is formed in the surface of the upper longitudinal beam (22) and is connected with the suspension rod (1) in an inserting mode, and a first locking nut (23) is arranged on the upper surface of the upper longitudinal beam (22) and is in threaded connection with the suspension rod (1).

4. The cast-in-place box girder integral frame-falling dismounting device as claimed in claim 1, is characterized in that: the upper beam falling mechanism (2) comprises a jack (24), one end of the jack (24) is connected with the beam falling platform base (21), and the other end of the jack is in interference fit with the lower surface of the upper longitudinal beam (22).

5. The cast-in-place box girder integral frame-falling dismounting device as claimed in claim 1, is characterized in that: the lower support mechanism (3) comprises a lower longitudinal beam (31), the surface of the lower longitudinal beam (31) is provided with a hole which is in plug-in fit with the suspender (1), and the lower surface of the lower longitudinal beam (31) is provided with a second locking nut (32) which is in threaded connection with the bottom end of the suspender (1).

6. The cast-in-place box beam integral frame-falling dismounting device as claimed in claim 5, wherein: the lower longitudinal beam (31) is arranged below the support system (4), and the upper surface of the lower longitudinal beam (31) is in contact fit with the original double-spliced cross beam (41) at the bottom of the support system (4).