CN212359139U

CN212359139U - Box girder mounting bracket

Info

Publication number: CN212359139U
Application number: CN202021787040.2U
Authority: CN
Inventors: 张永勇; 王占良; 李乾; 李宁; 洪顺裕; 陈杰
Original assignee: Ningbo Construction Engineering Group Co ltd
Current assignee: Ningbo Construction Engineering Group Co ltd
Priority date: 2020-08-24
Filing date: 2020-08-24
Publication date: 2021-01-15
Anticipated expiration: 2030-08-24

Abstract

The utility model relates to a box girder mounting bracket, which comprises a pair of movable code plates symmetrically arranged above the open face of the butt joint end of a box girder, wherein the vertical plates of the two movable code plates are connected in a split way by connecting lead screws and matching bolts, and one end of each movable code plate is provided with an inner screw sleeve with an adjusting bolt; the bottom plates of the movable stacking plates are parallel to the top surface of the box girder, and the bottom plates are vertically in threaded connection with leveling screw rods which are used for abutting against the top edges of two sides of the opening of the box girder; the bottom plate of each movable stacking plate is vertically connected with a stress screw, the bottoms of the stress screws on the two sides of each movable stacking plate are fixedly connected with a cross arm support, and the box girder is fixed by the cross arm support, the stress screws on the two sides and the movable stacking plates. Hoisting the box girder to the internal thread sleeve and setting up in bracket box girder top surface to adjust above-mentioned adjusting bolt, make the box girder flush the butt joint with bracket box girder, the butt joint department welds at last, accomplishes the installation of box girder promptly, and the installation is comparatively convenient, efficiency, and the installing support can dismantle used repeatedly.

Description

Box girder mounting bracket

Technical Field

The utility model relates to a building element connects the field, is a case roof beam installing support.

Background

At present, the steel frame structure beam is generally installed in two ways, one is that a code plate is welded on a flange plate on a steel beam to be installed, the code plate welded on the steel beam is lapped on a bracket (the alias of a bracket beam, also called as a beam support) of the steel structure to be butted, and then the butting connection operation is completed by external workers; the other mode is that the steel beam to be installed is suspended at the installation position through hoisting equipment, and then butt joint operation is carried out by workers. Above-mentioned first mode needs the welding sign indicating number board, and the girder steel butt joint installation back, in order to guarantee follow-up normal construction and pleasing to the eye, needs to cut off the sign indicating number board to need polish and touch-up paint operation, comparatively loaded down with trivial details, artifical intensity of labour is big, and efficiency is not high. And the connection is suspended in midair in the second mode adoption, and it is efficient to compare first mode, nevertheless needs many operating personnel to follow the hoist and mount, carries out the temporary fixation of girder steel at any time, and intensity of labour is equally great, and takes up time long to loop wheel machine equipment, influences the construction progress. In order to solve the problems, the prior art discloses that a detachable mounting support is adopted to realize the butt joint of a steel beam and a steel structure bracket, but the mounting support is generally only suitable for the butt joint of an I-shaped steel beam, and flange plates protruding towards two sides of the I-shaped steel beam are mainly utilized during the butt joint, so that the mounting support is convenient to fix and limit. And to the case roof beam, because of case roof beam itself is bulky, the four sides are the plane, and implement the inside welding operation after the case roof beam butt joint in order to make things convenient for, often the case roof beam top surface is equipped with the uncovered of making things convenient for the operation, and this obviously makes the butt joint that current general installing support is more difficult to be applicable to the case roof beam.

The existing box girder and the bracket box girder are installed in a butt joint mode, the box girder web plate and the bracket box girder web plate are fixed temporarily through a connecting plate and a bolt, then a butt joint is welded, a cover plate is welded at an operation opening after welding, and installation of the whole box girder is completed. Although this method is simple and convenient, it has the following disadvantages: after the box girder is in place, the installation of the connecting plate is complicated, time and labor are wasted, the time for occupying hoisting equipment is long, if installation or manufacturing errors occur, the time is longer, and the efficiency is lower; secondly, the connecting plate is permanently left on the box girder after the connection with the temporary fixing bolt is completed, so that materials are wasted; and thirdly, if the height of the box girder is staggered, the box girder is difficult to correct, and quality defects and potential safety hazards are easily caused.

For this reason, a mounting bracket suitable for butt-joint installation of box girders is to be designed.

Disclosure of Invention

In order to overcome the defects, the utility model aims to provide a box girder installing support to the field, make it solve the difficult box girder butt joint installation that is applicable to of current installing support, and the installation of current box girder butt joint is comparatively loaded down with trivial details, waste time and energy, the cost is higher, the lower technical problem of efficiency. The purpose is realized by the following technical scheme.

A box girder mounting bracket is used as a bracket for butting a box girder and a bracket box girder, wherein the top surface of the box girder is provided with an opening which is near the butt joint end and lacks a cover plate, and a height difference of the thickness of the cover plate is formed between the top edges of the two sides of the opening and the top surface of the box girder; the mounting bracket is structurally characterized by comprising a pair of movable code plates which are symmetrically arranged above the open face of a box girder, wherein each movable code plate comprises vertical plates and a bottom plate which are connected in a right-angle manner, the vertical plates of the two movable code plates are connected in a split manner through at least two connecting screw rods which are perpendicular to the vertical plates and matched with bolts, one end of each movable code plate, which faces towards the bracket box girder, is provided with an inner thread sleeve, and each inner thread sleeve is internally and threadedly connected with an adjusting bolt for abutting against the top face of the bracket box girder; the bottom plates of the movable stacking plates are parallel to the top surface of the box girder, and each bottom plate is vertically in threaded connection with at least one leveling screw rod used for abutting against the top edges of two sides of the opening of the box girder; at least two stress screw rods distributed at intervals are vertically connected below the bottom plate of each movable code plate, and the top of each stress screw rod is fixed with the corresponding bottom plate through nuts; the stress screw rods below the movable code plates on one side correspond to the stress screw rods below the movable code plates on the other side one by one, the bottoms of the two stress screw rods which correspond one by one are fixedly connected with a cross arm support, the cross arm support is provided with a connecting hole which is connected with the stress screw rod on one side in a penetrating mode, a bar-shaped sliding hole which is connected with the stress screw rod on the other side in a penetrating mode and is in sliding fit with the stress screw rod on the side is formed, and the box girder is fixed through a hoop formed by the cross arm support, the stress screw rods on the.

Above-mentioned structure, realize the interval adjustment between the movable yard board of both sides through connecting the lead screw, realize the interval adjustment between below cross arm support and the movable yard board of top through the atress screw rod, be equipped with the bar slide opening through cross arm support one end, thereby adaptation both sides atress screw rod realizes the interval adjustment along with the movable yard board of both sides, connect the lead screw, the atress screw rod all realizes fixedly through the nut, thereby it is fixed to make installing support and case roof beam form the staple bolt, the structure is comparatively reliable, and is stable, after the staple bolt is fixed, utilize the cooperation of the internal thread sleeve of movable yard board one end to adjust the screw and support in the top surface of bracket case roof beam mutually, adjust adjusting screw, can adjust case roof beam and bracket case roof beam flush butt joint, thereby guarantee the precision and the quality of case roof beam butt joint installation. In addition, the mounting bracket is easy to be detached and then used for the second time, so that the aims of environmental protection, economy and material saving are achieved.

The cross arm support is made of channel steel. The cross arm bracket of the structure has better strength.

And stiffening ribs are welded at the included angle positions of the vertical plates and the bottom plate of the movable code plate. Through this structure, improve the intensity of activity sign indicating number board, guarantee reliable, the stability of using.

The end angle of one side of the vertical plate of the movable code plate, which is connected with the inner thread sleeve, is provided with an oblique opening. Through this structure, make things convenient for interior adjusting bolt of internal thread sleeve to revolve to twist the operation.

The leveling screw rod is in threaded connection with the bottom plate and then is connected with the locking nut, and the end parts of the leveling screw rod, which are abutted against the top edges of two sides of the opening of the box girder, are plane ends. Through this structure, make the activity sign indicating number board keep the level to make activity sign indicating number board and bottom cross arm roof beam press from both sides tightly through atress screw rod and case roof beam, use more reliably, stable, difficult not hard up.

The stressed screw is a nut with one end provided with a bolt head and the other end connected with the back of the bottom plate of the movable code plate in a penetrating manner. The structural connection is convenient.

The utility model discloses overall structure is comparatively simple, and the cost of manufacture is lower, realizes the reliable installation of counterpointing of case roof beam, and it is comparatively convenient to install, and intensity of labour is lower, and the efficiency of construction is high, and easily dismantles, dismantles back repeatedly usable, and comparatively economic environmental protection is fit for the temporary stand use as all kinds of case roof beam installations, and the improvement of the mounting structure of the same kind.

Drawings

Fig. 1 is a schematic side view of the present invention.

Fig. 2 is a left side view of the structure of fig. 1.

Fig. 3 is a schematic top view of the structure of fig. 1.

Fig. 4 is a schematic perspective view of the embodiment of the present invention.

3 FIG. 3 5 3 is 3 a 3 schematic 3 side 3 view 3 of 3 FIG. 3 4 3, 3 taken 3 along 3 line 3 A 3- 3 A 3. 3

Fig. 6 is a schematic top view of the structure of fig. 5.

3 fig. 3 7 3 is 3 a 3 schematic 3 sectional 3 view 3 a 3- 3 a 3 of 3 fig. 3 5 3. 3

Fig. 8 is a schematic structural diagram after the installation of the present invention is completed.

The sequence numbers and names in the figure are: 1. the movable stacking plate comprises a movable stacking plate 101, a vertical plate 102, a bottom plate 103, a stiffening rib 104, an inner wire sleeve 2, a connecting screw rod 3, a leveling screw rod 4, an adjusting bolt 5, a stress screw rod 6, a cross arm support 601, a bar-shaped sliding hole 7, a box girder 701, an opening 8, a bracket box girder 9 and a cover plate.

Detailed Description

The invention will now be further described with reference to the accompanying drawings.

As shown in fig. 1-8, the box girder mounting bracket is a bracket for butt-jointing the box girder 7 and the corbel box girder 8, wherein the top surface of the box girder is provided with an opening 701 near the butt-jointing end, the cover plate 9 is absent, and a height difference of the cover plate thickness is formed between the top edge of the two sides of the opening and the top surface of the box girder. This installing support includes that a pair of symmetry sets up in the activity sign indicating number board 1 of case roof beam open face top, and the activity sign indicating number board includes riser 101 and the bottom plate 102 that disjunctor right angle distributes, and riser and bottom plate right angle department welding are equipped with one row of stiffening rib 103 to improve activity sign indicating number board bulk strength. The vertical plates of the two movable stacking plates are connected in a split mode through two connecting screw rods 2 which are arranged at intervals and perpendicular to the vertical plates, the end, facing the bracket box girder, of each movable stacking plate is provided with an inner screw sleeve 104 in a welded mode, and the inner screw sleeves are connected with adjusting bolts 4 which are used for abutting against the top surface of the bracket box girder in a threaded mode. The bottom plates of the movable stacking plates are all parallel to the top surface of the box girder, and the bottom plates are vertically connected with a leveling screw rod 3 in a threaded manner, wherein the leveling screw rod is used for abutting against the top edges of two sides of the opening of the box girder. Two stress screw rods 5 which are distributed at intervals are vertically connected below the bottom plate of each movable code plate, the bottom ends of the stress screw rods are provided with bolt heads for limiting, the stress screw rods below the movable code plate on one side are in one-to-one correspondence with the stress screw rods below the movable code plate on the other side, the bottoms of the two stress screw rods which are in one-to-one correspondence are connected with cross arm supports 6 in a cross-connection mode, each cross arm support is made of groove-shaped steel, each cross arm support is provided with a connecting hole which is in cross connection with the stress screw rod on one side and a bar-shaped sliding hole 601 which is in cross connection with the stress screw rod on the other side and is in sliding fit with the stress screw rod on the other side, the bolt heads at the bottom ends of the stress screw rods are limited in groove openings. The box girder is fixed by the hoop formed by the cross arm support, the stress screw rods on two sides and the movable stacking plate.

In order to facilitate the selection and screwing operation of the adjusting bolt 4 in the inner wire sleeve 104, the vertical plate 101 of the movable code plate 1 is provided with an inclined opening at the corner of one side connected with the inner wire sleeve.

In order to ensure that the leveling screw rod 3 is more reliably connected and locked with the bottom plate 101 of the movable code plate 1, the leveling screw rod is connected with the bottom plate through threads and then is connected with a locking nut, and the end parts of the leveling screw rod, which are abutted against the top edges of two sides of an opening 701 of a box girder 7, are plane ends or are welded with a flat plate.

The utility model discloses box girder installing support's installation application method mainly includes following step:

firstly, the movable code plates 1 on two sides are connected in a split mode through a connecting screw rod 2 and a nut, a bottom plate 101 of each movable code plate is connected with a leveling screw rod 3 in a threaded mode, the bottoms of the bottom plates on the two sides are connected with the top ends of stress screw rods 5 through nuts, and cross arm supports 6 are connected between the bottom ends of the stress screw rods on the two sides in a penetrating mode.

And step two, sleeving the whole structure into a box girder 7, adjusting the leveling screw rods 3 and nuts connected with the screw rods 2 to enable the bottom plate surfaces at one ends of the two movable stacking plates 1 to be flush and supported on the top surface of the box girder, enabling the stress screw rods 5 at two sides to be tightly attached to two sides of the box girder, and enabling the cross arm support 6 to be located on the bottom surface of the box girder.

And step three, the cross arm support 6 and the two movable stacking plates 1 above tightly clamp the top surface and the bottom surface of the box girder 7 by adjusting nuts on the stress screw rods 5, and at the moment, the cross arm support is matched with the stress screw rods on the two sides and the movable stacking plates 1 to form hoop fixation on the box girder.

And step four, after the operation steps are completed, hoisting the box girder 7 to be in butt joint with the bracket box girder 8 through a crane, and during butt joint, arranging the inner wire sleeve 104 of the movable stacking plate 1 on the top surface of the bracket box girder, and adjusting the adjusting bolt 5 of the inner wire sleeve to enable the box girder and the bracket box girder to form a flush butt joint state.

And step five, welding and fixing the butt joint of the box girder and the inner part of the bracket box girder 8 through the opening 701 of the box girder 7, and removing the cross arm support after welding and fixing, namely removing the mounting support for secondary use.

And step six, welding missing cover plates 9 at the open 701 of the box girder 7, and completing the installation of the box girder.

The above contents are intended to illustrate the technical means of the present invention, and do not limit the technical scope of the present invention. Obvious modifications or substitutions for the present invention by a person of ordinary skill in the art in combination with the prior art also fall within the protection scope of the present invention.

Claims

1. A box girder mounting bracket is used as a bracket for butting a box girder (7) and a bracket box girder (8), wherein the top surface of the box girder is provided with an opening (701) without a cover plate (9) near the butting end, and a height difference of the thickness of the cover plate is formed between the top edge of two sides of the opening and the top surface of the box girder; the bracket is characterized by comprising a pair of movable code plates (1) which are symmetrically arranged above the surface of an opening (701) of a box girder (7), wherein each movable code plate comprises vertical plates (101) and a bottom plate (102) which are connected in a right-angle manner, the vertical plates of the two movable code plates are connected in a split manner through at least two connecting screw rods (2) which are perpendicular to the vertical plates and matched with bolts, one end of each movable code plate, which faces the bracket box girder (8), is provided with an inner thread sleeve (104), and each inner thread sleeve is internally and threadedly connected with an adjusting bolt (4) which is used for abutting against the top surface of the bracket box girder; the bottom plates of the movable stacking plates are parallel to the top surface of the box girder, and each bottom plate is vertically in threaded connection with at least one leveling screw rod (3) which is used for abutting against the top edges of two sides of the box girder opening (701); at least two stress screw rods (5) which are distributed at intervals are vertically connected below the bottom plate of each movable code plate, and the top of each stress screw rod and the corresponding bottom plate are fixed through nuts; the stress screw rods below the movable yard plates on one side correspond to the stress screw rods below the movable yard plates on the other side one by one, the bottoms of the two stress screw rods which correspond one by one are fixedly connected with a cross arm support (6), the cross arm support is provided with a connecting hole which is connected with the stress screw rods on one side in a penetrating mode, and a bar-shaped sliding hole (601) which is connected with the stress screw rods on the other side in a penetrating mode and is in sliding fit with the stress screw rods on the side, and the box girder is fixed by the cross arm support, the stress screw rods on the two sides and the.

2. A box girder installation support according to claim 1, characterised in that the cross arm supports (6) are channel steel.

3. The box girder installation bracket according to claim 1, characterized in that a stiffening rib (103) is welded at an included angle position between a vertical plate (101) of the movable yard plate (1) and a bottom plate (102).

4. The box girder installation bracket according to claim 1, characterized in that the corner of one side of the vertical plate (101) of the movable yard plate (1) connected with the inner wire sleeve (104) is provided with a bevel opening.

5. The box girder installation bracket according to claim 1, characterized in that the leveling screw rod (3) is connected with the locking nut after being in threaded connection with the bottom plate (102), and the end part of the leveling screw rod, which is abutted against the top edges of two sides of the opening of the box girder, is a plane end.

6. The box girder installation bracket according to claim 1, characterized in that the stressed screw rod (5) is a nut with a bolt head at one end and a back connection nut at the other end which is connected with a bottom plate (102) of the movable yard plate (1) in a penetrating way.