CN215252239U

CN215252239U - Cantilever of steel arch bridge

Info

Publication number: CN215252239U
Application number: CN202120673993.4U
Authority: CN
Inventors: 谭宁君; 李鸿儒; 张岩; 刘利军; 侯瑞
Original assignee: CCCC Third Highway Engineering Co Ltd
Current assignee: CCCC Third Highway Engineering Co Ltd
Priority date: 2021-04-01
Filing date: 2021-04-01
Publication date: 2021-12-21
Anticipated expiration: 2031-04-01

Abstract

The application discloses cantilever of steel arched bridge, including crossbeam body and set up cantilever frame, left mounting bracket, right mounting bracket, rotation loop bar, support column, circle arch fagging, head rod and the second connecting rod in crossbeam body one side, crossbeam body bottom fixed connection support column, the fixed slide bar of crossbeam body both sides fixed connection, fixed slide bar one side sliding connection left side mounting bracket. In order to increase the security, left side mounting bracket and right mounting bracket top rigid coupling have the first threaded rod of a plurality of, rotate this moment with second threaded rod threaded connection's rotation loop bar, rotate the loop bar and move down on the second threaded rod, it sets up in the screw hole to rotate loop bar bottom, under the effect of screw hole, rotate loop bar and first threaded rod looks threaded connection, under the combined action of first threaded rod and second threaded rod, the supporting role has been played to the cantilever frame, its possible type that falls has been reduced, very big improvement security.

Description

Cantilever of steel arch bridge

Technical Field

The application relates to a cantilever, in particular to a cantilever of a steel arch bridge.

Background

When riverways are located at different geographical positions, steel arch bridges need to be erected and communicated, the existing cantilever construction is the most main construction method of the steel arch bridges, and the cantilever construction adopts a cantilever splicing method. The steel arch bridge is divided into a fixed section and a longitudinal moving section along the central line of the bridge, a side-span steel beam is firstly constructed at the fixed section, the side-span steel beam is formed by assembling side-span steel beam sections, a side-span steel beam is also constructed at the longitudinal moving section, the side-span steel beam is formed by assembling side-span steel beam sections, and finally the longitudinal moving section moves towards the fixed section along the longitudinal bridge direction to be combined with the fixed section to form the steel arch bridge.

The existing cantilever structure is single in arrangement, and most cantilevers are poor in stability and easy to cause accidents; in addition, the existing cantilever supporting structure is simpler and can not meet the requirement of use safety. Therefore, a cantilever for a steel arch bridge is proposed to solve the above problems.

Disclosure of Invention

A cantilever of a steel arch bridge comprises a beam body, a cantilever frame, a left mounting frame, a right mounting frame, a rotating loop bar, a supporting column, a circular arch supporting plate, a first connecting rod and a second connecting rod, wherein the cantilever frame, the left mounting frame, the right mounting frame, the rotating loop bar, the supporting column, the circular arch supporting plate, the first connecting rod and the second connecting rod are arranged on one side of the beam body, the fixed sliding rods are fixedly connected on two sides of the beam body, one side of each fixed sliding rod is slidably connected with the left mounting frame, the other side of each fixed sliding rod is slidably connected with the right mounting frame, the two left mounting frames and one side of the right mounting frame are both penetrated and fixedly connected with the cantilever frame, the second connecting rod is fixedly connected between the cantilever frames, the tops of the left mounting frame and the right mounting frame are fixedly connected with a second fixing seat, the top of the second fixing seat is fixedly connected with a first threaded rod, the bottom of the frame is fixedly connected with a second threaded rod, one sides of the first threaded rod and the second threaded rod are both connected with the rotating loop bar, the left side two fixed connection first fixed plate between the cantilever top, the right side two second fixed plate between the cantilever top.

Further, the quantity of support column is six, the even distribution of support column is in crossbeam body bottom, and every the first fixing base of support column bottom fixed connection.

Furthermore, a circular arch supporting plate is fixedly connected between the two supporting columns, the top of the circular arch supporting plate is fixedly connected with the beam body, the top of the circular arch supporting plate is fixedly connected with a first connecting rod, the top of the first connecting rod is fixedly connected with the beam body, and the first connecting rods fixedly connected to the circular arch supporting plate are symmetrically arranged in length.

Further, the sliding chutes matched with the fixed sliding rods are formed in the inner sides of the left mounting frame and the right mounting frame.

Further, the left side mounting bracket and the right mounting bracket are connected with four first fixing bolts at equal intervals through threads at the same side, the other side of each first fixing bolt is connected with a fixing slide rod through threads, and a mounting hole matched with the first fixing bolt is formed in one side of each fixing slide rod.

Further, the length of the second threaded rod changes gradually along with the radian of the cantilever frame, and the bottom end of the second threaded rod is on the same horizontal line.

Further, both sides offer the screw hole with first threaded rod and second threaded rod looks adaptation about the loop bar rotates, the equal fixed connection stopper of second threaded rod one end, stopper sliding connection rotates the loop bar, rotate the loop bar inboard and offer the spacing groove with stopper looks adaptation.

Furthermore, a through hole matched with the cantilever frame is formed in one side of each of the left mounting frame and the right mounting frame.

Furthermore, a plurality of inserting blocks are fixedly connected to one side of the first fixing plate, the inserting blocks are inserted into the second fixing plate, and slots matched with the inserting blocks are formed in the second fixing plate.

Further, a plurality of second fixing bolts are in equidistant threaded connection with the top of the second fixing plate, and the bottoms of the second fixing bolts are in threaded connection with the inserting block.

The beneficial effect of this application is: the application provides a cantilever of a steel arch bridge.

Drawings

In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present application, and it is obvious for those skilled in the art that other drawings can be obtained according to the drawings without inventive exercise.

FIG. 1 is a schematic overall perspective view of an embodiment of the present application;

FIG. 2 is a schematic diagram of the overall internal structure of an embodiment of the present application;

FIG. 3 is an enlarged view of a portion of the structure of FIG. 2 according to an embodiment of the present disclosure;

FIG. 4 is a schematic view of the structure of the fixed sliding bar shown in FIG. 2 according to an embodiment of the present application.

In the figure: 1. the crossbeam body, 2, the support column, 3, first fixing base, 4, the dome fagging, 5, the head rod, 6, left side mounting bracket, 7, first fixing bolt, 8, cantilever frame, 9, the second connecting rod, 10, the second fixing base, 11, first threaded rod, 12, the rotation loop bar, 13, the second threaded rod, 14, the screw hole, 15, the stopper, 16, the spacing groove, 17, right side mounting bracket, 18, first fixed plate, 19, the second fixed plate, 20, second fixing bolt, 21, the grafting piece, 22, the slot, 23, fixed slide bar, 24, the mounting hole.

Detailed Description

In order to make the technical solutions better understood by those skilled in the art, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only partial embodiments of the present application, but not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.

It should be noted that the terms "first," "second," and the like in the description and claims of this application and in the drawings described above are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It should be understood that the data so used may be interchanged under appropriate circumstances such that embodiments of the application described herein may be used. Furthermore, the terms "comprises," "comprising," and "having," and any variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed, but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus.

In this application, the terms "upper", "lower", "left", "right", "front", "rear", "top", "bottom", "inner", "outer", "middle", "vertical", "horizontal", "lateral", "longitudinal", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings. These terms are used primarily to better describe the present application and its embodiments, and are not used to limit the indicated devices, elements or components to a particular orientation or to be constructed and operated in a particular orientation.

Moreover, some of the above terms may be used to indicate other meanings besides the orientation or positional relationship, for example, the term "on" may also be used to indicate some kind of attachment or connection relationship in some cases. The specific meaning of these terms in this application will be understood by those of ordinary skill in the art as appropriate.

Furthermore, the terms "mounted," "disposed," "provided," "connected," and "sleeved" are to be construed broadly. For example, it may be a fixed connection, a removable connection, or a unitary construction; can be a mechanical connection, or an electrical connection; may be directly connected, or indirectly connected through intervening media, or may be in internal communication between two devices, elements or components. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art as appropriate.

It should be noted that the embodiments and features of the embodiments in the present application may be combined with each other without conflict. The present application will be described in detail below with reference to the embodiments with reference to the attached drawings.

Referring to fig. 1-4, a cantilever of a steel arch bridge comprises a beam body 1, and a cantilever frame 8, a left mounting frame 6, a right mounting frame 17, a rotating loop bar 12, a supporting column 2, a circular arch supporting plate 4, a first connecting rod 5 and a second connecting rod 9 which are arranged on one side of the beam body 1, wherein the bottom of the beam body 1 is fixedly connected with the supporting column 2, two sides of the beam body 1 are fixedly connected with fixed slide bars 23, one side of each fixed slide bar 23 is slidably connected with the left mounting frame 6, the other side of each fixed slide bar 23 is slidably connected with the right mounting frame 17, one side of each of the left mounting frame 6 and the right mounting frame 17 penetrates through and is fixedly connected with the cantilever frame 8, the second connecting rod 9 is fixedly connected between the cantilever frames 8, the tops of the left mounting frame 6 and the right mounting frame 17 are fixedly connected with a second fixing base 10, and the top of the second fixing base 10 is fixedly connected with a first threaded rod 11, the bottom of the cantilever frame 8 is fixedly connected with a second threaded rod 13 of the cantilever frame 1, one sides of the first threaded rod 11 and the second threaded rod 13 are both in threaded connection with a rotating sleeve rod 12, a first fixing plate 18 is fixedly connected between the tops of the two cantilever frames 8 on the left side, and a second fixing plate 19 is fixedly connected between the tops of the two cantilever frames 8 on the right side.

The number of the support columns 2 is six, the support columns 2 are uniformly distributed at the bottom of the beam body 1, and the bottom of each support column 2 is fixedly connected with a first fixed seat 3; a circular arch supporting plate 4 is fixedly connected between the two supporting columns 2, the top of the circular arch supporting plate 4 is fixedly connected with a beam body 1, the top of the circular arch supporting plate 4 is fixedly connected with a first connecting rod 5, the top of the first connecting rod 5 is fixedly connected with the beam body 1, and the first connecting rods 5 fixedly connected with the circular arch supporting plate 4 are symmetrically placed in length; the inner sides of the left mounting rack 6 and the right mounting rack 17 are both provided with sliding chutes matched with the fixed sliding rods 23; the same sides of the left mounting frame 6 and the right mounting frame 17 are equidistantly in threaded connection with four first fixing bolts 7, the other sides of the first fixing bolts 7 are in threaded connection with a fixing slide rod 23, and one side of the fixing slide rod 23 is provided with a mounting hole 24 matched with the first fixing bolt 7; the length of the second threaded rod 13 is gradually changed along with the radian of the cantilever frame 8, and the bottom ends of the second threaded rods 13 are on the same horizontal line; threaded holes 14 matched with the first threaded rod 11 and the second threaded rod 13 are formed in the upper side and the lower side of the rotating sleeve rod 12, one end of each second threaded rod 13 is fixedly connected with a limiting block 15, each limiting block 15 is connected with the rotating sleeve rod 12 in a sliding mode, and a limiting groove 16 matched with each limiting block 15 is formed in the inner side of the rotating sleeve rod 12; through holes matched with the cantilever brackets 8 are formed in one sides of the left mounting bracket 6 and the right mounting bracket 17; one side of the first fixing plate 18 is fixedly connected with a plurality of inserting blocks 21, the inserting blocks 21 are inserted into the second fixing plate 19, and the second fixing plate 19 is provided with a slot 22 matched with the inserting blocks 21; the top of the second fixing plate 19 is connected with a plurality of second fixing bolts 20 in an equidistant threaded manner, and the bottom of the second fixing bolts 20 is connected with the insertion block 21 in a threaded manner.

When the cantilever frame 8 is installed, the left installation frame 6 and the right installation frame 17 which penetrate through and are fixedly connected with the cantilever frame 8 are moved to be in sliding connection with the fixed sliding rod 23 fixedly connected to the beam body 1, after the left installation frame 6 and the right installation frame 17 are installed, the first fixing bolt 7 is screwed down to ensure the stability of the cantilever frame, when the two cantilever frames 8 are close to each other, the left cantilever frame 8 drives the plug-in block 21 fixedly connected with the left cantilever frame 8 to be plugged into the second fixing plate 19 fixedly connected with the right cantilever frame 8 through the first fixing plate 18, and after the plugging is finished, the second fixing bolt 20 is screwed down to complete the installation of the cantilever frame 8, so that the function of facilitating the installation is realized; meanwhile, one side of the bottom of the cantilever frame 8 is fixedly arranged on the ground, the circular arch supporting plate 4 and the supporting column 2 are erected at the bottom of the beam body 1, the supporting column 2 is arranged in a river channel, and the circular arch supporting plate 4 and the supporting column 2 play a supporting role in the beam body 1 and the cantilever frame 8, so that the stability of the whole cantilever and the beam body 1 is further ensured, and the reasonability of the structure is reflected; in addition, a plurality of first threaded rods 11 are fixedly connected to the tops of the left mounting frame 6 and the right mounting frame 17, at the moment, the rotating sleeve rod 12 in threaded connection with the second threaded rod 13 is rotated, the rotating sleeve rod 12 moves downwards on the second threaded rod 13, the bottom of the rotating sleeve rod 12 is arranged in the threaded hole 14, under the action of the threaded hole 14, the rotating sleeve rod 12 is in threaded connection with the first threaded rod 11, under the combined action of the first threaded rod 11 and the second threaded rod 13, a supporting effect is achieved on the cantilever frame 8, the falling possibility is reduced, and safety is greatly improved.

The application has the advantages that:

1. in order to increase the safety, a plurality of first threaded rods are fixedly connected to the tops of the left mounting frame and the right mounting frame, a rotating sleeve rod in threaded connection with the second threaded rods is rotated, the rotating sleeve rod moves downwards on the second threaded rods, the bottoms of the rotating sleeve rods are arranged in the threaded holes, the rotating sleeve rod is in threaded connection with the first threaded rods under the action of the threaded holes, and under the combined action of the first threaded rods and the second threaded rods, the cantilever frame is supported, the falling possibility of the cantilever frame is reduced, and the safety is greatly improved;

2. in order to realize the function of convenient installation, when the cantilever frame is installed, a left installation frame and a right installation frame which are penetrated through and fixedly connected with the cantilever frame are moved to be in sliding connection with a fixed sliding rod fixedly connected on a beam, after the left installation frame and the right installation frame are installed, a first fixing bolt is screwed down to ensure the stability of the left installation frame and the right installation frame, when the two cantilever frames are close to each other, the left cantilever frame drives an insertion block fixedly connected with the left cantilever frame to be inserted into a second fixing plate fixedly connected with the right cantilever frame through a first fixing plate, and after the insertion is finished, the second fixing bolt is screwed down to finish the installation of the cantilever frame, so that the function of convenient installation is realized;

3. this application is rational in infrastructure, through the cooperation of cantilever frame, head rod and circle hunch fagging isotructure, with cantilever frame bottom one side fixed mounting subaerial, has erect circle hunch fagging and support column simultaneously in crossbeam body bottom, and the support column is installed in the river course, and the circle hunch fagging has played the supporting role to crossbeam body and cantilever frame with the support column, has further guaranteed the stability of whole cantilever and crossbeam body, has embodied the rationality of structure.

It is well within the skill of those in the art to implement, without undue experimentation, the present application is not directed to software and process improvements, as they relate to circuits and electronic components and modules.

The above description is only a preferred embodiment of the present application and is not intended to limit the present application, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, improvement and the like made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A cantilever of a steel arch bridge is characterized in that: comprises a beam body (1), a cantilever frame (8), a left mounting frame (6), a right mounting frame (17), a rotating loop bar (12), a support column (2), a circular arch support plate (4), a first connecting rod (5) and a second connecting rod (9) which are arranged on one side of the beam body (1), wherein the bottom of the beam body (1) is fixedly connected with the support column (2), two sides of the beam body (1) are fixedly connected with fixed slide bars (23), one side of each fixed slide bar (23) is slidably connected with the left mounting frame (6), the other side of each fixed slide bar (23) is slidably connected with the right mounting frame (17), the two left mounting frames (6) and one side of the right mounting frame (17) are respectively penetrated and fixedly connected with the cantilever frame (8), the second connecting rod (9) is fixedly connected between the cantilever frames (8), and the tops of the left mounting frame (6) and the right mounting frame (17) are fixedly connected with a second fixing seat (10), the novel cantilever beam fixing device is characterized in that a first threaded rod (11) is fixedly connected to the top of a second fixing seat (10), a second threaded rod (13) is fixedly connected to the bottom of a cantilever frame (8), a rotating sleeve rod (12) is connected to one side of the first threaded rod (11) and one side of the second threaded rod (13) in a threaded connection mode, a first fixing plate (18) is fixedly connected between the tops of the cantilever frames (8) on the left side, and a second fixing plate (19) is fixedly connected between the tops of the cantilever frames (8) on the right side.

2. The cantilever of a steel arch bridge of claim 1, wherein: the quantity of support column (2) is six, the even distribution of support column (2) is in crossbeam body (1) bottom, and every support column (2) bottom fixed connection first fixing base (3).

3. The cantilever of a steel arch bridge of claim 1, wherein: two fixed connection circle between support column (2) encircles fagging (4), circle encircles fagging (4) top fixed connection crossbeam body (1), circle encircles fagging (4) top fixed connection head rod (5), head rod (5) top fixed connection crossbeam body (1), the symmetrical length of head rod (5) of rigid coupling is placed on the fagging (4) of circle arch.

4. The cantilever of a steel arch bridge of claim 1, wherein: the inner sides of the left mounting frame (6) and the right mounting frame (17) are provided with sliding grooves matched with the fixed sliding rods (23).

5. The cantilever of a steel arch bridge of claim 1, wherein: left side mounting bracket (6) and right mounting bracket (17) are with four first fixing bolt (7) of equidistance threaded connection of same side, first fixing bolt (7) opposite side threaded connection fixes slide bar (23), mounting hole (24) with first fixing bolt (7) adaptation are seted up to fixed slide bar (23) one side.

6. The cantilever of a steel arch bridge of claim 1, wherein: the length of the second threaded rod (13) is gradually changed along with the radian of the cantilever frame (8), and the bottom ends of the second threaded rods (13) are on the same horizontal line.

7. The cantilever of a steel arch bridge of claim 1, wherein: screw hole (14) with first threaded rod (11) and second threaded rod (13) looks adaptation are seted up to both sides about rotating loop bar (12), the equal fixed connection stopper (15) of second threaded rod (13) one end, stopper (15) sliding connection rotates loop bar (12), rotate loop bar (12) inboard offered with stopper (15) looks adaptation spacing groove (16).

8. The cantilever of a steel arch bridge of claim 1, wherein: and a through hole matched with the cantilever frame (8) is formed in one side of the left mounting frame (6) and one side of the right mounting frame (17).

9. The cantilever of a steel arch bridge of claim 1, wherein: a plurality of plug blocks (21) are fixedly connected to one side of the first fixing plate (18), the plug blocks (21) are plugged with the second fixing plate (19), and slots (22) matched with the plug blocks (21) are formed in the second fixing plate (19).

10. The cantilever of a steel arch bridge of claim 1, wherein: the top of the second fixing plate (19) is in equidistant threaded connection with a plurality of second fixing bolts (20), and the bottom of each second fixing bolt (20) is in threaded connection with the corresponding insertion block (21).