CN112323649A

CN112323649A - Bridge girder erection machine and bridge construction method

Info

Publication number: CN112323649A
Application number: CN202011246133.9A
Authority: CN
Inventors: 孙志国; 廖志雄; 张军; 王明江; 谢飞; 王国合; 吴东林; 俞飞
Original assignee: Xinjiang Beixin Road and Bridge Group Co Ltd
Current assignee: Coprs Communication Construction Co ltd; Xinjiang Beixin Road and Bridge Group Co Ltd
Priority date: 2020-11-10
Filing date: 2020-11-10
Publication date: 2021-02-05
Anticipated expiration: 2040-11-10
Also published as: CN112323649B

Abstract

The application discloses a bridge girder erection machine and a bridge construction method, and relates to the technical field of bridge construction. The bridge girder erection machine comprises: a beam guide mechanism; the first leg mechanism is connected to one end, used for passing through the hole, of the guide beam mechanism; the second supporting leg mechanism is connected to the tail end of the guide beam mechanism; the third supporting leg mechanism is connected with the guide beam mechanism in a sliding manner; the third leg mechanism is arranged between the first leg mechanism and the second leg mechanism; and the first supporting leg mechanism and the third supporting leg mechanism are rotatably mounted with the guide beam mechanism, so that the guide beam mechanism can rotate relative to the bridge. The application provides a bridge girder erection machine can avoid the unsettled problem of nose girder mechanism afterbody when erectting the big slope curve bridge of small radius, and then avoids taking place to topple.

Description

Bridge girder erection machine and bridge construction method

Technical Field

The application relates to the technical field of bridge construction, in particular to a bridge girder erection machine and a bridge construction method.

Background

With the rapid development of road construction, under the condition of not influencing the operation of the existing high-speed line, higher requirements are provided for the high-speed construction of new construction. The construction of erecting the small-radius large-gradient curve bridge plate solves the condition restriction in the construction of newly-built expressway ramp bridges.

In the process of erecting a small-radius large-gradient curve bridge plate, when the existing bridge erecting machine passes through a hole, a guide beam at the tail part of the bridge erecting machine is suspended and does not have enough stress points, so that the problem of overturning is easy to occur.

Disclosure of Invention

The application provides a bridge girder erection machine and a bridge construction method, which are used for adjusting the direction of a guide beam, so that the guide beam at the tail part of the bridge girder erection machine can be supported, and overturning is avoided.

In order to solve the above problems, the present application provides:

a bridge erecting machine comprising:

a beam guide mechanism;

the first leg mechanism is connected to one end, used for passing through the hole, of the guide beam mechanism;

the second supporting leg mechanism is connected to the tail end of the guide beam mechanism;

the third supporting leg mechanism is connected with the guide beam mechanism in a sliding manner; the third leg mechanism is arranged between the first leg mechanism and the second leg mechanism;

and the first supporting leg mechanism and the third supporting leg mechanism are rotatably mounted with the guide beam mechanism, so that the guide beam mechanism can rotate relative to the bridge.

In one possible embodiment, the third leg mechanism includes a first angle adjustment assembly for rotatably mounting the guide beam mechanism to the third leg mechanism.

In one possible embodiment, the third leg mechanism further comprises a first and a second wheel housing; the first wheel box is rotatably connected with the second wheel box through the first angle adjusting assembly;

one end, far away from the first angle adjusting assembly, of the first wheel box is connected with the guide beam mechanism in a sliding mode; when the first angle adjusting assembly drives the first wheel box to rotate relative to the second wheel box, the guide beam mechanism is driven to rotate relative to the bridge;

the second wheel box is used for driving the first angle adjusting assembly to move in the direction perpendicular to the guide beam mechanism so as to drive the guide beam mechanism to move transversely.

In one possible embodiment, the first angular adjustment assembly comprises a base and a rotary disc that are rotationally connected; the rotating disc is connected with the first wheel box, and the base is connected with the second wheel box.

In one possible embodiment, the first leg mechanism includes a support assembly and a second angle adjustment assembly connected; the supporting assembly is used for supporting the guide beam mechanism;

the second angle adjusting assembly is used for enabling the guide beam mechanism to be rotatably installed on the first leg mechanism.

In one possible embodiment, the support assembly comprises a first support bar, a second support bar and a locking member;

the first supporting rod is in sliding telescopic connection with the second supporting rod; the locking piece is used for locking the relative positions of the first supporting rod and the second supporting rod.

In one possible embodiment, the guide beam mechanism comprises a first guide beam and a second guide beam which are arranged in parallel;

the first and second guide beams are independently movable relative to the third leg mechanism in a longitudinal direction of the guide beam mechanism.

In a possible embodiment, the bridge girder erection machine further comprises a lifting mechanism, and the lifting mechanism is slidably mounted on one side of the guide beam mechanism away from the first leg mechanism.

In another aspect, the present application provides a bridge construction method implemented by the bridge girder erection machine, including:

supporting the first leg mechanism on a cap beam at an end of an erected beam, the second leg mechanism on an erected beam, and the third leg mechanism on the beam guide mechanism between the first leg mechanism and the second leg mechanism;

moving the third leg mechanism to one end of the beam guide mechanism close to the first leg mechanism, so that the third leg mechanism is supported on the erected beam body; and the transverse axis of the third supporting leg mechanism is parallel to the axis of the cover beam of the beam to be erected;

lifting the first support leg mechanism and the second support leg mechanism to drive the beam guide mechanism to move relative to the third support leg mechanism, namely, the beam guide mechanism moves longitudinally and drives the first support leg mechanism to gradually move a preset distance towards the cover beam direction close to the beam to be erected;

adjusting the transverse axis of the first leg mechanism to be parallel to the axis of the cover beam of the beam to be erected;

continuously and longitudinally moving the guide beam mechanism to enable the first leg mechanism to reach the position above the bent cap of the beam to be erected, and placing the first leg mechanism down on the bent cap of the beam to be erected for fixing; the second supporting leg mechanism is fixedly supported on the erected beam body;

and conveying the precast beam body from the tail end of the beam guide mechanism to the direction close to the first leg mechanism, and lowering the precast beam body onto the bent cap of the beam to be erected.

In one possible embodiment, the guide beam mechanism comprises a first guide beam and a second guide beam; the step of adjusting the transverse axis of the first leg mechanism to be parallel to the axis of the cover beam of the beam to be erected comprises the following steps:

and respectively driving the first guide beam and the second guide beam to longitudinally move, so that the first guide beam and the second guide beam move in opposite directions relative to the third leg mechanism, and the transverse axis of the first leg mechanism is driven to be parallel to the axis of the cover beam of the beam to be erected.

The beneficial effect of this application is: the application provides a bridge girder erection machine, including nose girder mechanism, first landing leg mechanism, second landing leg mechanism and third landing leg mechanism. The first supporting leg mechanism is installed at one end, used for passing through holes, of the guide beam mechanism, the second supporting leg mechanism is installed at the tail end of the guide beam mechanism, the third supporting leg mechanism is connected with the guide beam mechanism in a sliding mode, and the third supporting leg mechanism is arranged between the first supporting leg mechanism and the second supporting leg mechanism. And the first supporting leg mechanism and the third supporting leg mechanism are rotatably installed with the guide beam mechanism, so that the guide beam mechanism can rotate relative to the bridge.

In the bridging construction, when the via hole operation is carried out, the guide beam mechanism is longitudinally moved so that the first support leg mechanism is erected on the bent cap beam of the beam to be erected, during the process, the guide beam mechanism can rotate relative to the third support leg mechanism according to the bending direction of the bridge, the tail end of the guide beam mechanism can also move towards the direction of the erected beam body along with the rotation of the guide beam mechanism, and the second support leg mechanism positioned at the tail end of the guide beam mechanism can be supported on the erected beam body. Meanwhile, the first leg mechanism and the guide beam mechanism rotate relatively, the transverse axis of the first leg mechanism is parallel to the axis of the cover beam of the beam to be erected, and therefore the first leg mechanism can be supported on the cover beam of the beam to be erected. From this, the bridge girder erection machine that this application provided makes first leg mechanism stable support in treating the bent cap of putting up the roof beam, can make the tail end of nose girder mechanism obtain stable support, avoids unsettled, and then avoids the problem that bridge girder erection machine topples to take place.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings that are required to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present application and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained from the drawings without inventive effort.

FIG. 1 shows a schematic structural diagram of a bridge girder erection machine;

FIG. 2 is a partially enlarged schematic view of a portion A of FIG. 1;

FIG. 3 is a partially enlarged schematic view of a portion B of FIG. 2;

FIG. 4 shows a schematic of a third leg mechanism;

FIG. 5 is a schematic top view of a bridge girder erection machine in a state of passing through a hole;

FIG. 6 is a schematic top view of another state of a bridge girder erection machine during via-passing;

FIG. 7 is a schematic side view of a bridge girder erection machine in a first state for via-passing;

FIG. 8 is a schematic side view of a bridge girder erection machine in a second state for via-passing;

FIG. 9 is a schematic side view of a third state of a bridge girder erection machine during via-passing;

FIG. 10 is a schematic side view of a bridge girder erection machine in a fourth state for via-passing;

FIG. 11 is a schematic side view of a bridge girder erection machine in a fifth state for via-passing;

fig. 12 is a schematic side view showing a sixth state of the bridge girder erection machine at the time of via-passing.

Description of the main element symbols:

1-a beam guide mechanism; 101-a first guide beam; 102-a second guide beam; 2-a first leg mechanism; 201-a support assembly; 2011-first support bar; 2012-a second support bar; 2013-a lock; 202-a second beam; 2021-a second track; 203-third wheel box; 2031 — a third drive; 204-a second angle adjustment assembly; 2041-a second base; 2042-a second rotating disk; 3-a second leg mechanism; 4-a third leg mechanism; 401-a first angle adjustment assembly; 4011-a first base; 4012-first rotating disk; 402-a first beam; 4021-a first track; 403-a first wheel box; 4031-a first drive member; 404-a second wheel box; 4041-second drive; 5-a lifting mechanism; 501-a first lifting trolley; 502-a second lift car; 6-riding wheel mechanism; 7-an electric control mechanism; 8-a hydraulic mechanism; 9-an auxiliary support mechanism; 901-a first auxiliary leg; 902-a second auxiliary leg; 903-a third auxiliary leg; 904-fourth auxiliary leg; 10 a-the erected beam body; 10 b-prefabricating a beam body; 11-a first pier stud; 11 a-a first capping beam; 12-a second pier stud; 12 a-a second capping beam; 13-a third pier stud; 13 a-a third capping beam; 14-beam transporting trolley.

Detailed Description

Reference will now be made in detail to embodiments of the present application, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are exemplary only for the purpose of explaining the present application and are not to be construed as limiting the present application.

In the description of the present application, it is to be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," "circumferential," and the like are used in the orientations and positional relationships indicated in the drawings for convenience in describing the present application and for simplicity in description, and are not intended to indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and are therefore not to be considered limiting of the present application.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present application, "a plurality" means two or more unless specifically limited otherwise.

In this application, unless expressly stated or limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can include, for example, fixed connections, removable connections, or integral parts; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art as appropriate.

In this application, unless expressly stated or limited otherwise, the first feature "on" or "under" the second feature may be directly contacting the first and second features or indirectly contacting the first and second features through intervening media. Also, a first feature "on," "over," and "above" a second feature may be directly or diagonally above the second feature, or may simply indicate that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature may be directly under or obliquely under the first feature, or may simply mean that the first feature is at a lesser elevation than the second feature.

The small radius and large gradient curved bridge has small radius and thus large included angle between two bent caps in the same span. In the conventional bridge girder erection machine, the transverse axes of the front supporting leg and the middle supporting leg are parallel and perpendicular to the guide beam mechanism 1, the tail part of the bridge girder erection machine (namely the tail end of the guide beam mechanism 1) is suspended and has no sufficient force point in the erection process, and the guide beam mechanism 1 at the tail part of the bridge girder erection machine is long and has large self weight, so that the bridge girder erection machine is easy to overturn.

The via hole operation means that after a bridge span body is erected, the bridge erecting machine needs to move a certain distance along the longitudinal direction (i.e. the extending direction of a bridge) so that the support leg at one end of the via hole of the beam guide mechanism 1 reaches the position of the bent cap of the beam to be erected, and the support leg can be supported on the bent cap of the beam to be erected, namely the via hole of the bridge erecting machine is completed. Subsequently, the girder feeding and the girder transporting are performed to erect the precast girder body 10b on the capping beam of the girder to be erected. Wherein the bent cap is erected on the cross beam between the two parallel pier columns. Wherein the precast beam body 10b means a beam body to be erected.

The girder feeding means a process of gradually suspending the precast girder body 10b to the girder guide mechanism 1 after transporting the precast girder body 10b to the tail end of the bridge girder erection machine. So as to subsequently convey the precast beam body 10b to the position of the bent cap of the girder to be erected along the girder guide mechanism 1, and erect the precast beam body 10b on the bent cap of the girder to be erected.

The application provides a bridge girder erection machine can be applied to the erection of the small-radius large-gradient curve bridge body, avoids the problem that the tail end of a guide beam mechanism 1 is unsettled to occur, and then avoids the bridge girder erection machine to overturn, and is also convenient for feed beam operation simultaneously. Illustratively, the bridge girder erection machine provided by the application can be used for erecting bridges with curve radiuses larger than 130 meters and longitudinal slopes smaller than 5%.

Example one

As shown in fig. 1 and 2, the embodiment provides a bridge erecting machine, which comprises a guide beam mechanism 1, a first leg mechanism 2, a second leg mechanism 3 and a third leg mechanism 4.

Wherein, the first leg mechanism 2 is connected to one end of the guide beam mechanism 1 for passing through the hole. The second leg mechanism 3 is connected to the tail end of the guide beam mechanism 1. The third leg mechanism 4 is connected with the guide beam mechanism 1 in a sliding manner, and the third leg mechanism 4 is positioned between the first leg mechanism 2 and the second leg mechanism 3. Meanwhile, the first leg mechanism 2 and the third leg mechanism 4 are rotatably mounted with the guide beam mechanism 1.

In the bridge work progress, when carrying out the via hole operation, nose girder mechanism 1 carries out longitudinal movement, and first leg mechanism 2 removes to the bent cap direction that is close to waiting to put up the roof beam gradually during, and first bent cap 11a direction above first pier stud 11 moves promptly. Meanwhile, the guide beam mechanism 1 can be rotated with respect to the third leg mechanism 4 according to the bending direction of the bridge. Specifically, the trailing end of the girder guide mechanism 1 is moved in a direction to approach the erected girder 10 a. Wherein the erected beam 10a refers to an erected beam.

At the same time, the guide beam mechanism 1 and the first leg mechanism 2 are relatively rotated so that the lateral axis of the first leg mechanism 2 is gradually parallel to the axis of the first lid beam 11 a. Thereby, the first leg mechanism 2 can be stably supported on the first cover beam 11a, and the guide beam mechanism 1 can be stably and reliably supported for the subsequent beam operation.

In the process that the guide beam mechanism 1 rotates relative to the bridge, the second leg mechanism 3 at the tail end of the guide beam mechanism 1 can move towards the direction of the erected beam body 10a, and further the second leg mechanism 3 can be supported on the erected beam body 10 a. Therefore, a stable supporting effect is provided for the tail end of the guide beam mechanism 1, the tail end of the guide beam mechanism 1 is prevented from being suspended, and the problem that the bridge girder erection machine overturns is solved.

It can be seen that the bridge girder erection machine provided by the present application can stably support the first leg unit 2 on the first cover beam 11 a. Meanwhile, the tail end of the guide beam mechanism 1 can be stably supported, and the overturning problem is avoided.

Example two

The embodiment provides a bridge erecting machine, and it can be understood that the embodiment is a further improvement on the first embodiment.

As shown in fig. 5 and 6, the bridge girder erection machine may be a double girder bridge girder erection machine, and accordingly, the guide beam mechanism 1 includes a first guide beam 101 and a second guide beam 102 arranged in parallel. The first guide beam 101 and the second guide beam 102 are both extended along the length direction of the guide beam mechanism 1.

In other embodiments, the bridge girder erection machine can be a single-beam bridge girder erection machine, and accordingly, the guide beam mechanism 1 is provided with a guide beam.

As shown in fig. 1 to 3, the first leg mechanism 2 includes a second cross member 202 and two support members 201. Wherein the second beam 202 extends along a direction perpendicular to the length of the guide beam mechanism 1, i.e. the second beam 202 is arranged along the transverse direction of the guide beam mechanism 1. Two support components 201 are respectively arranged at two ends of the second cross beam 202, and the two support components 201 are both slidably mounted on the second cross beam 202. The two support assemblies 201 are arranged corresponding to the two guide beams of the guide beam mechanism 1 one by one, wherein one end of one support assembly 201 far away from the second cross beam 202 is connected with the first guide beam 101, and one end of the other support assembly 201 far away from the second cross beam 202 is connected with the second guide beam 102. The two support members 201 are identical in structure and mounting structure, and an alternative description is provided below.

A third wheel box 203 is connected to the end of the support assembly 201 adjacent the second cross member 202. A rotatable second guide wheel is arranged on one side of the third wheel box 203 close to the second cross beam 202, a second rail 2021 matched with the second guide wheel is arranged on the second cross beam 202, the second rail 2021 is laid along the extending direction of the second cross beam 202, and the second guide wheel is installed on the second rail 2021 in a rolling manner. The third wheel box 203 is further provided with a third driving member 2031, and the third driving member 2031 is used for driving the second guide wheel to rotate. Therefore, during the construction process, the third driving member 2031 drives the third wheel box 203 to move along the second rail 2021, and further drives the corresponding supporting assembly 201 to move along the second beam 202, so as to adjust the lateral position of the guide beam mechanism 1.

In some embodiments, the third drive 2031 can be an electric motor. Correspondingly, the bridge erecting machine further includes an electric control mechanism 7, and the third driving member 2031 is electrically connected to the electric control mechanism 7, so that the electric control mechanism 7 controls the operation of the third driving member 2031. In an embodiment, the electric control mechanism 7 may be fixedly mounted on a guide beam.

The support assembly 201 includes a first support bar 2011, a second support bar 2012, and a lock 2013. The first supporting rod 2011 is slidably connected with the second supporting rod 2012, that is, one end of the first supporting rod 2011 is sleeved on one end of the second supporting rod 2012, and the first supporting rod 2011 and the second supporting rod 2012 can slide relatively to each other, so as to adjust the height of the supporting assembly 201. One end of the first support bar 2011, which is far away from the second support bar 2012, is connected to the guide beam mechanism 1, and one end of the second support bar 2012, which is far away from the first support bar 2011, is connected to the third wheel box 203.

The locking member 2013 is used for locking the relative positions of the first support bar 2011 and the second support bar 2012, so as to fix the height of the support assembly 201 and provide a stable and reliable supporting function for the guide beam mechanism 1.

In some embodiments, the end of the first support bar 2011 close to the second support bar 2012 is provided with a plurality of pairs of pin holes, and the plurality of pairs of pin holes are arranged in the height direction of the first support bar 2011. The end of the second support bar 2012 near the first support bar 2011 is also provided with a plurality of pairs of pin holes corresponding to the pin holes on the first support bar 2011. Accordingly, the locking member 2013 may be a latch.

After the supporting member 201 is adjusted to a suitable height, the locking member 2013 can be inserted into the corresponding pin holes of the first supporting bar 2011 and the second supporting bar 2012 to fix the height of the supporting member 201. Of course, the locking members 2013 may be provided in multiple numbers, that is, the locking members 2013 may be inserted into the bolt holes of the first support bar 2011 and the second support bar 2012 which are overlapped with each other, so as to weaken the stress of the single locking member 2013, avoid safety accidents caused by sudden breakage of one of the locking members 2013, and prolong the service life of the locking member 2013.

In other embodiments, the first support bar 2011 and the second support bar 2012 can be fixedly locked by a fastener or other components.

During construction, the operator can adjust the height of the support assembly 201 according to the gradient of the bridge, and further adjust the height of the first leg mechanism 2. Thereby, the first leg unit 2 can be smoothly supported on the bent cap at the corresponding position.

As shown in fig. 3, a second angle adjustment assembly 204 is further connected between the support assembly 201 and the third wheel box 203. Specifically, the second angle adjustment assembly 204 includes a second base 2041 and a second rotating disk 2042, and the second rotating disk 2042 is rotatably mounted on the second base 2041.

In some embodiments, the second base 2041 is fixedly mounted on the third wheel box 203, the supporting component 201 is fixedly mounted on the second rotating disk 2042, and the second rotating disk 2042 can drive the supporting component 201 to rotate synchronously. When the second angle adjusting assembly 204 drives the supporting assembly 201 to rotate, the corresponding guide beam can be further driven to rotate, that is, the guide beam and the first leg mechanism 2 are rotatably mounted.

In other embodiments, the second angle adjustment assembly 204 may also be disposed directly at the connection of the support assembly 201 and the corresponding guide beam. Specifically, the second base 2041 is mounted on the supporting assembly 201, and the second rotating disk 2042 is connected to the corresponding guide beam. When the second rotating disk 2042 rotates relative to the second base 2041, the corresponding guide beams can be driven to rotate synchronously.

In one embodiment, the second angle adjustment assembly 204 is further connected to a first hydraulic cylinder (not shown) for driving the second rotating plate 2042 to rotate relative to the second base 2041 and accurately controlling the rotating angle of the second rotating plate 2042 relative to the second base 2041. Correspondingly, the bridge girder erection machine comprises a hydraulic mechanism 8, and the first hydraulic cylinder is connected to the hydraulic mechanism 8. The hydraulic unit 8 can be fixedly mounted on the guide beam unit 1.

As shown in fig. 1, the second leg mechanism 3 is fixedly mounted at the rear end of the guide beam mechanism 1. Specifically, the bridge girder erection machine is provided with two groups of second supporting leg mechanisms 3, and the two groups of second supporting leg mechanisms 3 are connected with two guide beams of the guide beam mechanism 1 in a one-to-one correspondence manner. The two sets of second leg mechanisms 3 are constructed and mounted in the same manner, and an alternative description will be given below.

One end of the second leg mechanism 3 is fixedly connected with the corresponding guide beam, and the other end of the second leg mechanism 3 is detachably connected with the erected beam body 10 a. Specifically, when the guide beam mechanism 1 moves longitudinally, the second leg mechanism 3 can be separated from the erected beam body 10a, so that the guide beam mechanism 1 can move correspondingly. When the beam is transported, the second leg mechanism 3 can be fixed on the erected beam body 10a, so that the tilting of the tail end of the beam guiding mechanism 1 is avoided.

In some embodiments, the second leg mechanism 3 may comprise two telescopically connected support rods (not shown), and a hydraulic jack (not shown) is mounted on the support rod near one end of the guide beam mechanism 1. The hydraulic jack is connected to a support rod remote from the girder guide mechanism 1 so that the support rod can be lifted by the hydraulic jack to be separated from the erected girder 10a after the second leg mechanism 3 is disconnected from the erected girder 10 a. Namely, the second leg mechanism 3 is separated from the erected beam body 10a so as to facilitate the movement of the girder guide mechanism 1. When the second leg mechanism 3 needs to be fixed on the erected beam 10a, the support rod at the end far away from the beam guide mechanism 1 is lowered by the hydraulic jack and contacts the erected beam 10a, and then is fixedly connected by a bolt or the like.

As shown in fig. 1 and 4, the third leg mechanism 4 is slidably connected to the guide beam mechanism 1. The third leg mechanism 4 includes a first cross member 402, a first wheel housing 403, and a second wheel housing 404. Wherein the first beam 402 is arranged perpendicular to the transverse direction of the guide beam mechanism 1. Corresponding to the two guide beams of the guide beam mechanism 1, correspondingly, the third leg mechanism 4 includes two sets of first wheel boxes 403 and second wheel boxes 404, wherein one set of the first wheel boxes 403 and the second wheel boxes 404 is disposed corresponding to the first guide beam 101, and the other set of the first wheel boxes 403 and the second wheel boxes 404 is disposed corresponding to the second guide beam 102. The two sets of first and second wheel housings 403, 404 are constructed and arranged in the same manner, alternatively described below.

The first wheel box 403 is slidably connected to the guide beam mechanism 1, the second wheel box 404 is slidably connected to the first cross beam 402, and the first wheel box 403 is connected to the second wheel box 404. Specifically, a roller is disposed on one side of the first roller box 403 close to the guide beam mechanism 1, the roller is in contact connection with the corresponding guide beam, and a rolling axis of the roller is perpendicular to the guide beam. When the roller rolls, the corresponding guide beam is driven to move under the action of friction force.

In an embodiment, the first wheel box 403 is provided with a first driving member 4031 for driving the wheel to rotate. In some embodiments, the first driving member 4031 can be an electric motor, and the first driving member 4031 is electrically connected to the electric control mechanism 7.

One side of the second wheel box 404 close to the first cross beam 402 is provided with a first guide wheel, correspondingly, one side of the first cross beam 402 close to the second wheel box 404 is provided with a first rail 4021, and the first guide wheel is installed on the first rail 4021 in a rolling manner. First rail 4021 extends along the length of first beam 402. A second driving member 4041 is further disposed on the second wheel box 404, and is used for driving the second guide wheel to rotate, so that the second wheel box 404 moves along the first rail 4021. Thereby driving the first wheel box 403 and the corresponding guide beam to move along the first beam 402, i.e. the corresponding guide beam moves laterally, so as to adjust the lateral position of the guide beam mechanism 1 or the distance between the two guide beams.

In some embodiments, the second driving member 4041 can be a motor, and the second driving member 4041 can be electrically connected to the electronic control mechanism 7.

Further, the first wheel box 403 and the second wheel box 404 are rotatably connected by a first angle adjustment assembly 401. Specifically, the first angle adjusting assembly 401 includes a first base 4011 and a first rotating disk 4012, and the first rotating disk 4012 is rotatably mounted on the first base 4011. The first rotating disc 4012 is fixedly connected to the first wheel box 403, and the first base 4011 is fixedly connected to the second wheel box 404. When the first rotating disc 4012 drives the first wheel box 403 to synchronously rotate, the corresponding guide beam is driven to rotate, so that the corresponding guide beam rotates relative to the bridge. Namely, the third leg mechanism 4 and the guide beam mechanism 1 are rotatably mounted.

In an embodiment, the first angle adjusting assembly 401 is further connected to a second hydraulic cylinder (not shown in the figure) for driving the first rotating plate 4012 to rotate relative to the first base 4011 and accurately controlling the rotating angle of the first rotating plate 4012. The second hydraulic cylinder is connected to the hydraulic machine 8.

As shown in fig. 1, the bridge girder erection machine further comprises two riding wheel mechanisms 6, the two riding wheel mechanisms 6 are correspondingly connected with the two guide beams one by one, and the riding wheel mechanisms 6 are used for supporting the guide beam mechanisms 1. The riding wheel mechanism 6 is connected with the corresponding guide beam in a sliding way. Specifically, an upper layer wheel box is arranged on one side, close to the guide beam, of the riding wheel mechanism 6, the idler wheels in the upper layer wheel box are in rolling connection with the corresponding guide beam, a motor used for driving the idler wheels to rotate is also arranged on the riding wheel mechanism 6, and the motor is electrically connected to the electric control mechanism 7. One side of the riding wheel mechanism 6, which is far away from the guide beam, is provided with a lower layer wheel box to drive the riding wheel mechanism 6 to move.

Further, still slidable mounting has hoist mechanism 5 on the nose girder mechanism 1, and hoist mechanism 5 is used for providing the handling function, and is specific, can handling roof beam body, third landing leg mechanism 4 isotructure. The lifting mechanism 5 is electrically connected to the electric control mechanism 7.

Specifically, the lifting mechanism 5 includes a first lifting trolley 501 and a second lifting trolley 502, and the first lifting trolley 501 and the second lifting trolley 502 both span between the first guide beam 101 and the second guide beam 102. The first lifting trolley 501 and the second lifting trolley 502 are slidably mounted on the top of the guide beam mechanism 1, i.e. on the side of the guide beam mechanism 1 away from each leg mechanism.

As shown in fig. 1, the bridge girder erection machine further comprises an auxiliary supporting mechanism 9 for supporting the guide beam mechanism 1, so as to improve the supporting strength of the bridge girder erection machine and avoid the problem of collapse of the guide beam mechanism 1.

For example, the auxiliary support mechanism 9 may include a first auxiliary leg 901, a second auxiliary leg 902, a third auxiliary leg 903, and a fourth auxiliary leg 904. The first auxiliary leg 901 is disposed near the first leg mechanism 2, the second auxiliary leg 902 and the third auxiliary leg 903 are disposed on both sides of the third leg mechanism 4, and the fourth auxiliary leg 904 is disposed near the second leg mechanism 3. In construction, constructors can detach the auxiliary supporting legs or add the auxiliary supporting legs according to needs and can adjust the positions of the auxiliary supporting legs according to needs.

EXAMPLE III

As shown in fig. 5 to 12, embodiments provide a bridge construction method, and in particular may relate to a construction method of a small-radius large-gradient curved bridge. Illustratively, the bridge construction method is explained by taking a section of 40m T-shaped beam erected between the first pier stud 11 and the second pier stud 12 as an example. The first pier column 11 and the second pier column 12 are arranged between the first pier column 11 and the second pier column 12, the second pier column 12 and the third pier column 13 are arranged between the second pier column 12 and the third pier column 13, and the first pier column 11, the second pier column 12 and the third pier column 13 are respectively provided with a corresponding first cover beam 11a, a corresponding second cover beam 12a and a corresponding third cover beam 13 a. The bridge construction method comprises the following steps:

as shown in fig. 7, is in a state of preparation before the bridge girder erection machine passes through the hole. The first leg unit 2 is supported and fixed to the second bent cap 12a above the second pier 12. The second leg mechanism 3 is supported and fixed on the erected beam body 10 a. The third leg mechanism 4 is supported by the guide beam mechanism 1 between the first leg mechanism 2 and the second leg mechanism 3. Meanwhile, the axes of the first lifting trolley 501 and the second lifting trolley 502 are adjusted to be perpendicular to the longitudinal axis of the guide beam mechanism 1, and the second cross beam 202 of the first leg mechanism 2 and the first cross beam 402 of the third leg mechanism 4 are adjusted to be perpendicular to the longitudinal axis of the guide beam mechanism 1. The third leg mechanism 4 rests on the side of the third lid beam 13a remote from the second lid beam 12a and at a preset distance, which may be set to 2m, for example. The riding wheel mechanism 6 rests at a predetermined distance from the trailing end of the guide beam mechanism 1, which may be set to 18m, for example. The first lifting trolley 501 rests directly above the third leg mechanism 4 and the second lifting trolley 502 rests at the rear end of the guide beam mechanism 1.

As shown in fig. 8, the third leg mechanism 4 is moved to the end of the beam guide mechanism 1 close to the first leg mechanism 2, so that the third leg mechanism 4 is supported on the erected beam body 10 a; and the transverse axis of the third leg mechanism 4 is parallel to the axis of the first lid beam 11 a.

Specifically, the connection between the third leg mechanism 4 and the erected beam body 10a is firstly removed, and the first cross beam 402 in the third leg mechanism 4 is fixed on the second wheel box 404; the support heights of the first leg mechanism 2 and the second leg mechanism 3 are adjusted to separate the third leg mechanism 4 from the erected beam 10 a. The first leg unit 2 and the second leg unit 3 can be raised to a certain height, in particular by hydraulic means. The third leg mechanism 4 is stopped at a position a preset distance from the first leg mechanism 2, for example, the preset distance may be set to 2m, by moving the third leg mechanism 4 to a direction close to the first leg mechanism 2 by the first lifting carriage 501. The axis of the first beam 402 of the third leg mechanism 4 is adjusted to be parallel to the axis of the first cover beam 11a, and the third leg mechanism 4 is fixedly installed on the erected beam body 10a at the corresponding position. At the same time, the riding wheel mechanism 6 is moved to a preset distance behind the third leg mechanism 4, i.e. the riding wheel mechanism 6 is located at a side of the third leg mechanism 4 close to the second leg mechanism 3, and the preset distance may be set to 15m for example.

As shown in fig. 5 and 9, raising the first leg mechanism 2 and the second leg mechanism 3 drives the guide beam mechanism 1 to move relative to the third leg mechanism 4, i.e., the guide beam mechanism 1 moves longitudinally and drives the first leg mechanism 2 to move gradually closer to the first cover beam 11 a. Specifically, the connection between the first leg mechanism 2 and the second lid beam 12a and the connection between the second leg mechanism 3 and the erected beam 10a are removed, and the first leg mechanism 2 and the second leg mechanism 3 are lifted to be separated from the corresponding second lid beam 12a and the erected beam 10 a. The first wheel box 403 in the third leg mechanism 4 and the upper wheel box in the riding wheel mechanism 6 are started to drive the guide beam mechanism 1 to move longitudinally, so that the first leg mechanism 2 moves towards the direction close to the first pier stud 11. Meanwhile, the first lifting trolley 501 is started to move backwards, so that the first lifting trolley 501 is always kept right above the third leg mechanism 4. Specifically, the guide beam mechanism 1 is stopped after being longitudinally moved by a preset distance, which may be set to 20m, for example.

As shown in fig. 5 and 6, the transverse axis of the first leg mechanism 2 is adjusted to be parallel to the axis of the first lid beam 11 a. Specifically, the first wheel boxes 403 under the first guide beam 101 and the second guide beam 102 are driven, respectively, to move the first guide beam 101 and the second guide beam 102 in opposite directions. Specifically, the first guide beam 101 near the inner ring of the bridge may be moved in a direction close to the first cap beam 11a, and the second guide beam 102 near the outer ring of the bridge may be moved in a direction away from the first cap beam 11a, according to the bending direction of the bridge. Thus, the lateral axis of the first leg unit 2 is rotated by a set angle by the first guide beam 101 and the second guide beam 102, and even if the second cross beam 202 of the first leg unit 2 is rotated by a set angle, the set angle can be set according to the radius of the bridge so that the axis of the second cross beam 202 is parallel to the axis of the first cap beam 11 a. Meanwhile, the first angle adjustment assembly 401 and the second angle adjustment assembly 204 operate adaptively to avoid generating resistance to the operation of the guide beam mechanism and the second beam 202, and also to rotate the guide beam mechanism 1 correspondingly to move the tail end of the guide beam mechanism 1 toward the direction close to the erected beam body 10a, so that the second leg mechanism 3 can be supported on the erected beam body 10 a.

In other embodiments, for a single-beam bridge girder erection machine with the guide beam mechanism 1 including a guide beam, the second angle adjustment assembly 204 can be directly used for rotational adjustment when adjusting the transverse axis of the first leg mechanism 2, and the guide beam mechanism 1 can also be directly driven by the first angle adjustment assembly 401 to adjust the angle with the bridge.

As shown in fig. 10 and 11, the guide beam mechanism 1 is further moved longitudinally, so that the first leg mechanism 2 is moved above the first lid beam 11 a; lowering the first leg unit 2 onto the first lid beam 11 a; and fixedly supports the second leg mechanism 3 on the erected beam body 10 a. Specifically, the precast beam body 10b is transported to the tail end of the guide beam mechanism 1 by the beam transporting trolley 14, and the second lifting trolley 502 is bound and fixed with the precast beam body 10b to balance the tail end of the guide beam mechanism 1. And restarting the first wheel box 403 of the third leg mechanism 4 and the upper wheel box of the riding wheel mechanism 6, continuously moving the guide beam mechanism 1 longitudinally, moving the first leg mechanism 2 towards the first cover beam 11a, and stopping after the first leg mechanism 2 is positioned above the first cover beam 11 a. During the longitudinal movement of the beam guide mechanism 1, the second lifting trolley 502 and the beam transporting trolley 14 synchronously move forward, namely synchronously move along with the beam guide mechanism 1; the first lifting trolley 501 is moved backwards synchronously so that the first lifting trolley 501 remains directly above the third leg mechanism 4. After the first leg mechanism 2 is moved to the right position, one end of the first leg mechanism 2 far away from the guide beam mechanism 1 is arranged on the first cover beam 11a, the height of the first leg mechanism 2 is adjusted, so that the guide beam mechanism 1 is kept horizontal, and meanwhile, the second leg mechanism 3 is fixedly supported on the erected beam body 10 a.

As shown in fig. 12, the precast girder body 10b is moved from the rear end of the girder guide mechanism 1 toward the direction close to the first leg mechanism 2, and the precast girder body 10b is lowered onto the cap girder of the girder to be erected.

Specifically, the first wheel box 403 of the third leg mechanism 4 is fixed to the corresponding guide beam by a U-shaped bolt, and similarly, the upper wheel box of the riding wheel mechanism 6 is fixed to the corresponding guide beam. The second wheel box 404 of the third leg mechanism 4 is released from the fastening with the first cross member 402. The connection between the second lifting trolley 502 and the precast beam body 10b is released, so that the second lifting trolley 502 moves towards the tail end of the guide beam mechanism 1, and meanwhile, the first lifting trolley 501 moves towards the direction close to the precast beam body 10b, so that the first lifting trolley 501 stops at the front end of the precast beam body 10b, namely, at the end close to the third supporting leg mechanism 4, and the hole passing operation is completed.

And binding and fixing the first lifting trolley 501 and the precast beam body 10b, starting the first lifting trolley 501 and the beam transporting trolley 14 to move forwards synchronously so as to transport the tail end of the precast beam body 10b to the position below the second lifting lower vehicle 502, binding and fixing the second lifting trolley 502 and the tail end of the precast beam body 10b, and finishing beam feeding operation.

The first and

second lifting carriages

501 and 502 are activated to advance simultaneously to transfer the precast girder body 10b between the first and

second cap girders

11a and 12a step by step. After being transported in place, the precast beam body 10b is gradually lowered down onto both the first and

second capping beams

11a and 12a, and then may be reinforced and fixed.

After the installation of one precast beam body 10b is completed, the guide beam mechanism 1 is transversely moved according to the width of the bridge, and the hoisting installation of the same span of another precast beam body 10b is carried out. And after the span finishes the lifting installation of all the precast beam bodies 10b, carrying out next hole passing preparation so as to lay the precast beam bodies 10b one by one along the length extension direction of the bridge.

In an embodiment, when the longitudinal gradient of the bridge is large, for example, an ascending bridge, the second leg mechanism 3 and the third leg mechanism 4 may be raised in advance at the time of passing through the hole, so that the first leg mechanism 2 can be smoothly mounted on the first cover beam 11 a. For the downhill girder bridge, when passing through the hole, the first leg mechanism 2 may be lengthened in advance so that the first leg mechanism 2 can smoothly lower and mount the first lid beam 11 a.

In the embodiment, for some bridges with larger transverse slopes, when the first leg mechanisms 2 are installed on the first cover beams 11a, the first cover beams 11a can be leveled in advance, so that the first leg mechanisms 2 can be installed horizontally, the guide beam mechanisms 1 are ensured to be kept horizontal in the transverse direction, and the side turning situation is avoided.

In an embodiment, the bridge construction method may further include assembling of a bridge girder erection machine. Specifically, the equipment is comprehensively checked and cleaned according to drawings and technical data, components with damage, corrosion or other defects are removed, and the bridge girder erection machine can be assembled after all the components are qualified. The installation can be carried out according to the following sequence, namely the installation of the first supporting leg mechanism 2, the second supporting leg mechanism 3, the third supporting leg mechanism 4 and the riding wheel mechanism 6, the installation of the guide beam mechanism 1, the adjustment of the first supporting leg mechanism 2 and the installation of the auxiliary supporting mechanism 9, the installation of the lifting mechanism 5, the installation of the hydraulic mechanism 8 and finally the installation of the electric control mechanism 7.

In conclusion, the bridge girder erection machine provided by the application can adjust the angle of the guide beam mechanism 1 according to the bending radius of the bridge in the bridge construction process, and can ensure that the first leg mechanism 2 is safely supported on the first cover beam 11a, and meanwhile, the tail end of the guide beam mechanism 1 can be stably supported, so that the overturning problem is avoided, and meanwhile, the beam feeding operation is also convenient to carry out.

In the description herein, reference to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the application. In this specification, the schematic representations of the terms used above are not necessarily intended to refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, various embodiments or examples and features of different embodiments or examples described in this specification can be combined and combined by one skilled in the art without contradiction.

Although embodiments of the present application have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present application, and that variations, modifications, substitutions and alterations may be made to the above embodiments by those of ordinary skill in the art within the scope of the present application.

Claims

1. A bridge girder erection machine, comprising:

a beam guide mechanism;

2. A bridge girder erection machine according to claim 1, wherein the third leg mechanism comprises a first angle adjustment assembly for rotatably mounting the girder guide mechanism on the third leg mechanism.

3. A bridge girder erection machine according to claim 2, wherein the third leg mechanism further comprises a first and a second wheel housing; the first wheel box is rotatably connected with the second wheel box through the first angle adjusting assembly;

4. A bridge erecting machine according to claim 3, wherein said first angle adjustment assembly comprises a rotatably connected base and a rotating disc; the rotating disc is connected with the first wheel box, and the base is connected with the second wheel box.

5. A bridge erecting machine according to any one of claims 1 to 4, wherein said first leg mechanism comprises a connected support assembly and a second angle adjustment assembly; the supporting assembly is used for supporting the guide beam mechanism;

6. A bridge erecting machine according to claim 5, wherein said support assembly comprises a first support bar, a second support bar and a locking member;

7. A bridge erecting machine according to claim 1, wherein said guide beam mechanism comprises a first guide beam and a second guide beam arranged in parallel;

8. A bridge erecting machine according to claim 1, further comprising a lifting mechanism slidably mounted to a side of the girder guide mechanism remote from the first leg mechanism.

9. A bridge construction method implemented by the bridge girder erection machine according to any one of claims 1 to 8, comprising:

10. The bridge construction method according to claim 9, wherein the guide beam mechanism comprises a first guide beam and a second guide beam; the step of adjusting the transverse axis of the first leg mechanism to be parallel to the axis of the cover beam of the beam to be erected comprises the following steps: