CN114481847A - Construction device and construction process for mounting prefabricated beam plate on bridge girder erection machine - Google Patents
Construction device and construction process for mounting prefabricated beam plate on bridge girder erection machine Download PDFInfo
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- CN114481847A CN114481847A CN202210121144.7A CN202210121144A CN114481847A CN 114481847 A CN114481847 A CN 114481847A CN 202210121144 A CN202210121144 A CN 202210121144A CN 114481847 A CN114481847 A CN 114481847A
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- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
- E01D21/00—Methods or apparatus specially adapted for erecting or assembling bridges
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- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
- E01D21/00—Methods or apparatus specially adapted for erecting or assembling bridges
- E01D21/06—Methods or apparatus specially adapted for erecting or assembling bridges by translational movement of the bridge or bridge sections
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Abstract
The invention discloses a construction device and a construction process for mounting a precast beam plate by a bridge girder erection machine, which comprise a main beam, wherein two groups of portal frames are fixedly connected to the main beam, a first moving wheel set is mounted at the bottom of one group of portal frames, a second moving wheel set is mounted at the bottom of the other group of portal frames, hoisting mechanisms are mounted at two sides of the main beam, and the precast beam plate is hooked at the bottom of each hoisting mechanism. The invention has the advantages that: the anti-slip patterns prevent the prefabricated beam plates from moving forwards and backwards, the bridge-shaped protection arms cover a part of the prefabricated beam plates and act together with the anti-slip patterns to prevent the prefabricated beam plates from shaking leftwards and rightwards in the hoisting moving process, namely, the prefabricated beam plates are prevented from shaking when the wind power is too large, the prefabricated beam plates are prevented from shaking, and the stability of the prefabricated beam plates in the hoisting moving process is further ensured; the prefabricated beam slab can be prevented from swinging around or left and right, waste of preorder work caused by stopping installation work during gust is prevented, waste of manpower and material resources is prevented, and bridge erection work is guaranteed to be carried out as scheduled.
Description
Technical Field
The invention relates to the technical field of bridge construction, in particular to a construction device and a construction process for mounting a prefabricated beam slab by a bridge girder erection machine.
Background
The bridge girder erection machine is bridge construction machinery which runs on a highway and a railway track and is used for erecting a small span girder in a whole span. Because the bridging work efficiency is high, the erection is considered as a design principle in the standard design of the Chinese railway bridge. The machine body is large and exceeds a railway transportation limit, needs to be disassembled for transportation, and is assembled for use after reaching a construction site. The bridge girder erection machine is equipment for placing prefabricated beam pieces on a prefabricated bridge pier. Bridge girder erection machines belong to the crane category, as their main function is to lift the beam piece up and then transport it into position and put it down. Bridge cranes are very different from cranes in general. The pier needs to be preset before the work of the existing bridge erecting machine, and the pier is used as a fulcrum, the girder plates are erected, the work of the bridge erecting machine can be influenced by weather, when wind power reaches fifth and sixth levels, the work of the bridge erecting machine needs to be stopped, sometimes, the working procedure is in place, the stop work can cause great work waste when gusts occur, the construction device of the bridge erecting machine can assist in clamping the prefabricated girder plates and is used for resisting the gusts, the prefabricated girder plates are prevented from swinging, the mounting is more stable, and the waste of preorder work caused by the stop of the mounting work when the gusts are prevented.
Disclosure of Invention
Technical problem to be solved
Aiming at the defects of the prior art, the invention provides a construction device and a construction process for installing a precast beam slab by a bridge girder erection machine, which have the advantages of preventing the precast beam slab from shaking when the wind power is too large, preventing the precast beam slab from swinging, further ensuring the stability of the precast beam slab in the hoisting and moving process and the like, and solve the problems of preorder work waste and construction period delay caused by the fact that the precast beam slab is easy to crank during the operation stop in gust.
(II) technical scheme
In order to realize the purposes of preventing the precast beam plate from shaking when the wind power is too large, preventing the precast beam plate from swinging and further ensuring the stability of the precast beam plate in the hoisting and moving process, the invention provides the following technical scheme: the construction device for mounting the precast beam plate by the bridge girder erection machine comprises a main beam, wherein two groups of portal frames are fixedly connected to the main beam, a first moving wheel set is mounted at the bottom of one group of the portal frames, and a second moving wheel set is mounted at the bottom of the other group of the portal frames;
hoisting mechanisms are arranged on two sides of the main beam, and a precast beam plate is hooked at the bottom of each hoisting mechanism;
guide rails are integrated at the bottoms of two sides of the main beam, the main beam is movably connected with a translation mechanism through the guide rails, hydraulic folding support legs are installed at the bottom of the translation mechanism, the top of the main beam is fixedly connected with a top frame, a hydraulic support rod is integrated at the bottom of the top frame, and a support plate is fixedly connected to the output end of the hydraulic support rod;
the anti-skid device comprises a main beam, a hydraulic arm mechanism, a motor, a spiral arm mechanism, bridge-shaped guard arms, a prefabricated beam plate and a prefabricated beam plate, wherein the hydraulic arm mechanism is installed on two sides of the main beam, the motor is fixedly connected to the output end of the hydraulic arm mechanism, the spiral arm mechanism is fixedly connected to the output end of the motor, the bridge-shaped guard arms are fixedly connected to the bottoms of the spiral arm mechanism, the inner sides of the bridge-shaped guard arms are abutted to two sides of the prefabricated beam plate, and vertical anti-skid threads are integrated on the inner sides of the bridge-shaped guard arms;
the hydraulic support mechanism is installed on two sides of the main beam, the output end of the hydraulic support mechanism faces downwards, the hydraulic support mechanism is located between the second movable wheel set and the precast beam plate, and the hydraulic support mechanism is used for supporting the main beam when the bridge girder erection machine returns, so that the hydraulic folding support legs are folded.
Preferably, the width of the portal frame is smaller than that of the precast beam slab, and the portal frame is integrated with a traveling driving mechanism of the first moving wheel set and the second moving wheel set.
Preferably, the first moving wheel group has 32 moving wheels, wherein the level of the moving wheels is 18PR, and the level refers to the nominal layer number of the cord fabric in the rubber layer of the tire, so that the first moving wheel group has strong bearing capacity, and is positioned at the rear side of the whole bridge girder erection machine.
Preferably, the second moving wheel group has 32 moving wheels, wherein the moving wheels are in the level of 18PR, and the second moving wheel group is located at the front side of the whole bridge girder erection machine.
Preferably, the hoisting mechanism is provided with six hoisting points on the precast beam plate, and the width of the translation mechanism is smaller than the distance between the inner sides of the second movable wheel sets.
Preferably, the hydraulic folding supporting legs are integrally triangular when supported, and the top frame is located at the front ends of the main beams.
Preferably, the stroke of the output end of the hydraulic arm mechanism is 4-5 m, and the hydraulic arm mechanism is provided with four groups, and each two groups are positioned on one side of the main beam.
Preferably, the hydraulic arm mechanism is located at the top of the precast beam plate, the rotating angle of the swing arm mechanism is ninety degrees, and the bridge-shaped arm protection structures are folded on two sides of the main beam when not in use, so that the space is not occupied.
Preferably, the shape of the cross section of bridge shape armguard is trapezoidal, the length of shape of bridge armguard is less than the height of girder, the inboard both sides of laminating precast beam board of shape of bridge armguard prevent with anti-skidding line combined action that precast beam board from rocking about hoist and mount removal in-process, and the shape of bridge armguard is whole to be the shape of bridge, and the structure is firm.
The construction process for installing the precast beam slab construction device by the bridge girder erection machine comprises the following steps:
(1) the precast beam plates are hung at the bottom of the main beam through six hanging hooks of the hoisting mechanism, and the main beam moves on the bridge plate which is laid in advance;
(2) after the precast beam slab is hoisted, checking the operation condition of each mechanism, and leveling and straightening the bridge girder erection machine;
(3) the output end of the hydraulic arm mechanism extends out, the swing arm mechanism is in a straight state at the moment, the bridge-shaped protection arm is in a vertical state, then the output end of the motor rotates, the swing arm mechanism is in a vertical state, the bridge-shaped protection arm is in a horizontal state, and the output end of the hydraulic arm mechanism returns until the inner side of the bridge-shaped protection arm abuts against the two sides of the prefabricated beam plate;
(4) commanding a bridge girder erection machine to move by a commander, moving the bridge girder erection machine at a speed of 1-1.5 meters per second under the driving of a first moving wheel group and a second moving wheel group until the bottom of the front end of the bridge girder erection machine is suspended, wherein the bottom of a translation mechanism is over against a bridge pier, a hydraulic folding support leg rotates to form a triangular support structure, and the position of the translation mechanism is not moved and the bridge girder erection machine continues to move;
(5) the bottom of the hydraulic support rod moves to the position above the other bridge pier, the support plate is pressed downwards to support the main beam, the hydraulic folding support leg is retracted at the moment, the translation mechanism cancels the support of the main beam and moves to the side of the hydraulic support rod at the front end of the bridge girder erection machine, the hydraulic folding support leg rotates to form a triangular support structure, the hydraulic support rod is retracted at the moment, and the bridge girder erection machine continues to advance;
(6) the prefabricated beam plate moves above two piers, the hydraulic support rod is positioned above one pier, the support plate is pressed downwards to support the main beam, the hydraulic folding support leg is matched to support the main beam, then the position of the prefabricated beam plate is aligned and measured, the output end of the hydraulic arm mechanism is ejected out, the swing arm mechanism is horizontal, the output end of the hydraulic arm mechanism returns, the bridge-shaped guard arm is retracted, the lifting mechanism is used for putting down the lifting hook, the prefabricated beam plate is laid on the piers, and workers perform auxiliary installation on the prefabricated beam plate;
(7) after the prefabricated beam plate is laid, the lifting hook is folded, the whole bridge girder erection machine retreats, the hydraulic folding supporting leg is still supported at the moment, the supporting plate structure is retracted, the output end of the hydraulic supporting mechanism is ejected out, the main beam is supported, the hydraulic folding supporting leg can be retracted at the moment, then the hydraulic supporting mechanism is retracted, and the whole bridge girder erection machine retreats.
(III) advantageous effects
Compared with the prior art, the invention provides a construction device and a construction process for installing a precast beam slab by a bridge girder erection machine, and the construction device and the construction process have the following beneficial effects:
1. the construction device and the construction process for installing the precast beam slab by the bridge girder erection machine are characterized in that through the arrangement of a hydraulic arm mechanism, a motor, a spiral arm mechanism, a bridge-shaped protection arm and anti-skid threads, the position limiting structure of the precast beam plate is additionally arranged on the main beam, after the precast beam plate is hoisted, namely, the output end of the hydraulic arm mechanism extends out, the spiral arm mechanism is in a straight state, the bridge-shaped guard arm is in a vertical state, then the output end of the motor rotates, the spiral arm mechanism is in a vertical state, the bridge-shaped guard arm is in a horizontal state, the output end of the hydraulic arm mechanism returns until the inner side of the bridge-shaped guard arm is abutted against the two sides of the precast beam plate, the anti-skid veins prevent the precast beam plate from moving forwards and backwards, the bridge-shaped guard arm covers a part of the precast beam plate, the precast beam plate is prevented from shaking leftwards and rightwards in the hoisting moving process under the combined action, prevent promptly that wind-force from making the precast beam board rock when too big, prevent that the precast beam board from swaying, further guaranteed the precast beam board at hoist and mount stability of removal in-process.
2. This bridge girder erection machine installation precast beam board construction equipment and construction process can resist wind-force under the effect of dependence hydraulic pressure arm mechanism, motor, spiral arm mechanism, bridge shape armguard and anti-skidding line when gust comes, prevents that the precast beam board from swaying around or from side to side rocking, prevents to lead to the waste of preorder work because of stopping the installation work when gust, prevents extravagant manpower and materials, guarantees going on as scheduled of bridge erection work.
Drawings
FIG. 1 is a schematic structural diagram of a first view angle of a construction device for installing a precast beam slab by a bridge girder erection machine according to the present invention;
FIG. 2 is a schematic structural diagram of a second view angle of the construction device for installing the precast beam slab by the bridge girder erection machine according to the present invention;
FIG. 3 is an enlarged schematic structural view of a prefabricated beam slab installation construction device of a bridge girder erection machine, which is provided by the invention, at the position A in FIG. 1;
FIG. 4 is a schematic structural view of an anti-skid pattern of a construction device for installing a precast beam slab by using a bridge girder erection machine provided by the invention.
In the figure: the device comprises a main beam 1, a portal frame 2, a first moving wheel set 3, a second moving wheel set 4, a lifting mechanism 5, a precast beam plate 6, a guide rail 7, a translation mechanism 8, a hydraulic folding supporting leg 9, a top frame 10, a hydraulic supporting rod 11, a supporting plate 12, a hydraulic arm mechanism 13, a motor 14, a rotary arm mechanism 15, a bridge-shaped protecting arm 16, an anti-skid pattern 17 and a hydraulic support mechanism 18.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the 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 invention.
Referring to fig. 1-4, the construction device for installing the precast beam slab by the bridge girder erection machine comprises a main beam 1, wherein two groups of portal frames 2 are fixedly connected to the main beam 1, a first moving wheel set 3 is installed at the bottom of one group of portal frames 2, and a second moving wheel set 4 is installed at the bottom of the other group of portal frames 2;
two sides of the main beam 1 are provided with hoisting mechanisms 5, and the bottom of each hoisting mechanism 5 is hooked with a precast beam plate 6;
the bottom of the two sides of the main beam 1 is integrated with guide rails 7, the main beam 1 is movably connected with a translation mechanism 8 through the guide rails 7, the bottom of the translation mechanism 8 is provided with hydraulic folding supporting legs 9, the top of the main beam 1 is fixedly connected with a top frame 10, the bottom of the top frame 10 is integrated with a hydraulic supporting rod 11, and the output end of the hydraulic supporting rod 11 is fixedly connected with a supporting plate 12;
the two sides of the main beam 1 are provided with hydraulic arm mechanisms 13, the output end of each hydraulic arm mechanism 13 is fixedly connected with a motor 14, the output end of each motor 14 is fixedly connected with a swing arm mechanism 15, the bottom of each swing arm mechanism 15 is fixedly connected with a bridge-shaped guard arm 16, the inner side of each bridge-shaped guard arm 16 is abutted to the two sides of the precast beam plate 6, and the inner side of each bridge-shaped guard arm 16 is integrated with a vertical anti-skidding thread 17;
the hydraulic support mechanism 18 is installed on two sides of the main beam 1, the output end of the hydraulic support mechanism 18 faces downwards, the hydraulic support mechanism 18 is located between the second movable wheel set 4 and the precast beam plate 6, and the hydraulic support mechanism 18 is used for supporting the main beam 1 when the bridge girder erection machine returns, so that the hydraulic folding support legs 9 are folded.
As a preferable technical scheme of the invention: the width of the portal frame 2 is smaller than that of the precast beam plate 6, and the portal frame 2 is integrated with a traveling driving mechanism of a first moving wheel set 3 and a second moving wheel set 4;
as a preferable technical scheme of the invention: the first moving wheel group 3 has 32 moving wheels in total, wherein the level of the moving wheels is 18PR, and the level refers to the nominal layer number of the cord fabric in the rubber layer of the tire, so that the first moving wheel group 3 has strong bearing capacity, and the first moving wheel group 3 is positioned at the rear side of the whole bridge girder erection machine;
as a preferable technical scheme of the invention: the second moving wheel group 4 has 32 moving wheels, wherein the moving wheel is in the level of 18PR, and the second moving wheel group 4 is positioned at the front side of the whole bridge girder erection machine;
as a preferable technical scheme of the invention: six lifting points are arranged on the precast beam plate 6 of the lifting mechanism 5, and the width of the translation mechanism 8 is smaller than the distance between the inner sides of the second moving wheel sets 4;
as a preferable technical scheme of the invention: the hydraulic folding supporting legs 9 are integrally triangular when supported, and the top frame 10 is positioned at the front end of the main beam 1;
as a preferable technical scheme of the invention: the stroke of the output end of the hydraulic arm mechanism 13 is 4-5 m, and the hydraulic arm mechanism 13 is provided with four groups, and each two groups are positioned at one side of the main beam 1;
as a preferable technical scheme of the invention: the bridge-shaped guard arms 16 are located on two sides of the precast beam plates 6, the cross section of each bridge-shaped guard arm 16 is trapezoidal, the length of each bridge-shaped guard arm 16 is smaller than the height of each main beam 1, the inner sides of the bridge-shaped guard arms 16 are attached to two sides of each precast beam plate 6, the bridge-shaped guard arms 16 cover a part of the precast beam plates 6 and jointly act with the anti-skidding threads 17 to prevent the precast beam plates 6 from shaking left and right in the hoisting and moving process, and the bridge-shaped guard arms 16 are integrally in a bridge shape and are stable in structure.
As a preferable technical scheme of the invention: the bridge-shaped guard arm 16 structure is folded at two sides of the main beam 1 when not in use, and does not occupy space.
When in use, the utility model is used,
(1) the precast beam plate 6 is hung at the bottom of the main beam 1 through six lifting hooks of the lifting mechanism 5, and the main beam 1 moves on a bridge plate which is laid in advance;
(2) after the precast beam slab 6 is hoisted, checking the operation condition of each mechanism, and leveling and straightening the bridge girder erection machine;
(3) the output end of the hydraulic arm mechanism 13 extends out, at the moment, the spiral arm mechanism 15 is in a straight state, the bridge-shaped protection arm 16 is in a vertical state, then the output end of the motor 14 rotates, the spiral arm mechanism 15 is in a vertical state, the bridge-shaped protection arm 16 is in a horizontal state, and the output end of the hydraulic arm mechanism 13 returns until the inner side of the bridge-shaped protection arm 16 abuts against the two sides of the precast beam plate 6;
(4) commanding a bridge girder erection machine to move by a commander, moving the bridge girder erection machine at a speed of 1-1.5 meters per second under the driving of a first moving wheel group 3 and a second moving wheel group 4 until the bottom of the front end of the bridge girder erection machine is suspended, wherein the bottom of a translation mechanism 8 is over against a pier at the moment, a hydraulic folding supporting leg 9 rotates to form a triangular supporting structure, the position of the translation mechanism 8 is not moved at the moment, and the bridge girder erection machine continues to move;
(5) the bottom of the hydraulic support rod 11 moves to the position above another pier, the support plate 12 is pressed downwards to support the girder 1, the hydraulic folding support leg 9 is retracted, the translation mechanism 8 cancels the support of the girder 1 and moves to the position near the hydraulic support rod 11 at the front end of the bridge girder erection machine, the hydraulic folding support leg 9 rotates to form a triangular support structure, the hydraulic support rod 11 is retracted, and the bridge girder erection machine continues to advance;
(6) the precast beam plate 6 moves to the position above two piers, the hydraulic support rod 11 is positioned above one pier, the support plate 12 is pressed downwards to support the girder 1, the hydraulic folding support leg 9 is matched to support the girder 1, then the position of the precast beam plate 6 is aligned and measured, the output end of the hydraulic arm mechanism 13 is ejected out, the swing arm mechanism 15 is horizontal, the output end of the hydraulic arm mechanism 13 returns, the bridge-shaped protection arm 15 is retracted, the lifting mechanism 5 puts down a lifting hook to enable the precast beam plate 6 to be laid on the piers, and workers perform auxiliary installation on the precast beam plate 6;
(7) after the prefabricated beam plate 6 is laid, retracting the lifting hook, retreating the whole bridge girder erection machine, supporting the hydraulic folding supporting leg 9 at the moment, retracting the supporting plate 12 structure, ejecting the output end of the hydraulic supporting mechanism 18, supporting the main beam 1, retracting the hydraulic folding supporting leg 9 at the moment, retracting the hydraulic supporting mechanism 18, retreating the whole bridge girder erection machine, wherein the steel wire rope of the lifting mechanism 5 needs to be carefully checked to determine whether burrs and broken wires exist or not, and the steel wire rope is ensured to be intact; the bridge girder erection machine driver forbids independent moving of articles and can operate the bridge girder erection machine only by signals sent by workers, commanders or annunciators.
In conclusion, the construction device and the construction process for installing the precast beam slab by the bridge girder erection machine are characterized in that the position limiting structure of the precast beam slab 6 is additionally arranged on the main girder 1 through the arrangement of the hydraulic arm mechanism 13, the motor 14, the swing arm mechanism 15, the bridge-shaped protecting arm 16 and the anti-skid veins 17, after the precast beam slab 6 is hoisted, namely the output end of the hydraulic arm mechanism 13 extends out, the swing arm mechanism 15 is in a straight state, the bridge-shaped protecting arm 16 is in a vertical state, then the output end of the motor 14 rotates, the swing arm mechanism 15 is in a vertical state, the bridge-shaped protecting arm 16 is in a horizontal state, the output end of the hydraulic arm mechanism 13 retreats until the inner side of the bridge-shaped protecting arm 16 abuts against the two sides of the precast beam slab 6, the anti-skid veins 17 prevent the precast beam slab 6 from moving forwards and backwards, the bridge-shaped protecting arm 16 covers a part of the precast beam slab 6, and jointly prevent the precast beam slab 6 from shaking leftwards and rightwards in the hoisting moving process, namely prevent the precast beam slab 6 from shaking when the wind force is too large, the precast beam plate 6 is prevented from swinging, and the stability of the precast beam plate 6 in the hoisting movement process is further ensured; can resist wind power under the effect of relying on hydraulic arm mechanism 13, motor 14, spiral arm mechanism 15, bridge shape armguard 16 and anti-skidding line 17 when gust comes, prevent that precast beam board 6 from swaying around or from side to side, prevent to lead to the waste of preorder work because of stop fitting work when gust, prevent extravagant manpower and materials, guarantee going on as scheduled of bridge erection work
It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, the use of the verb "comprise a" to define an element does not exclude the presence of another, same element in a process, method, article, or apparatus that comprises the element.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (10)
1. The construction device for mounting the precast beam slab by the bridge girder erection machine is characterized by comprising a main beam (1), wherein two groups of portal frames (2) are fixedly connected to the main beam (1), a first moving wheel set (3) is mounted at the bottom of one group of the portal frames (2), and a second moving wheel set (4) is mounted at the bottom of the other group of the portal frames (2);
hoisting mechanisms (5) are installed on two sides of the main beam (1), and a precast beam plate (6) is hooked at the bottom of each hoisting mechanism (5);
guide rails (7) are integrated at the bottoms of two sides of the main beam (1), the main beam (1) is movably connected with a translation mechanism (8) through the guide rails (7), hydraulic folding support legs (9) are installed at the bottom of the translation mechanism (8), an upper frame (10) is fixedly connected to the top of the main beam (1), a hydraulic support rod (11) is integrated at the bottom of the upper frame (10), and a support plate (12) is fixedly connected to the output end of the hydraulic support rod (11);
hydraulic arm mechanisms (13) are installed on two sides of the main beam (1), an output end of each hydraulic arm mechanism (13) is fixedly connected with a motor (14), an output end of each motor (14) is fixedly connected with a swing arm mechanism (15), the bottom of each swing arm mechanism (15) is fixedly connected with a bridge-shaped guard arm (16), the inner side of each bridge-shaped guard arm (16) is abutted to two sides of each precast beam plate (6), and vertical anti-skidding threads (17) are integrated on the inner side of each bridge-shaped guard arm (16);
the hydraulic pressure of installing in the both sides of girder (1) props mechanism (18), the output that mechanism (18) were propped to hydraulic pressure is down, hydraulic pressure props mechanism (18) and is located between second removal wheelset (4) and precast beam board (6).
2. The construction device for installing the precast beam slab by the bridge girder erection machine according to claim 1, wherein: the width of the portal frame (2) is smaller than that of the precast beam plate (6), and the portal frame (2) is integrated with a traveling driving mechanism of a first moving wheel set (3) and a second moving wheel set (4).
3. The construction device for installing the precast beam slab by the bridge girder erection machine according to claim 1, wherein: the first moving wheel group (3) comprises 32 moving wheels, wherein the moving wheels are in the level of 18PR, and the first moving wheel group (3) is positioned on the rear side of the whole bridge girder erection machine.
4. The construction device for installing the precast beam slab by the bridge girder erection machine according to claim 1, wherein: the second moving wheel group (4) comprises 32 moving wheels, wherein the moving wheels are in the level of 18PR, and the second moving wheel group (4) is positioned on the front side of the whole bridge girder erection machine.
5. The construction device for installing the precast beam slab by the bridge girder erection machine according to claim 1, wherein: six lifting points are arranged on the precast beam plate (6) of the lifting mechanism (5), and the width of the translation mechanism (8) is smaller than the distance between the inner sides of the second movable wheel sets (4).
6. The construction device for installing the precast beam slab by the bridge girder erection machine according to claim 1, wherein: the hydraulic folding supporting legs (9) are integrally triangular when supported, and the top frame (10) is located at the front end of the main beam (1).
7. The construction device for installing the precast beam slab by the bridge girder erection machine according to claim 1, wherein: the stroke of the output end of the hydraulic arm mechanism (13) is 4-5 m, and four groups of hydraulic arm mechanisms (13) are arranged and are positioned at one side of the main beam (1) in every two groups.
8. The construction device for installing the precast beam slab by the bridge girder erection machine according to claim 1, wherein: the hydraulic arm mechanism (13) is positioned at the top of the precast beam plate (6), and the rotating angle of the swing arm mechanism (15) is ninety degrees.
9. The construction device for installing the precast beam slab by the bridge girder erection machine according to claim 1, wherein: the bridge-shaped guard arms (16) are located on two sides of the precast beam plate (6), the cross section of each bridge-shaped guard arm (16) is trapezoidal, the length of each bridge-shaped guard arm (16) is smaller than the height of the main beam (1), and the inner sides of the bridge-shaped guard arms (16) are attached to two sides of the precast beam plate (6).
10. The construction process applied to the construction device for installing the precast beam slab by the bridge girder erection machine according to any one of claims 1 to 9 is characterized in that:
(1) the precast beam plate (6) is hung at the bottom of the main beam (1) through six lifting hooks of the lifting mechanism (5), and the main beam (1) moves on the bridge plate which is laid in advance;
(2) after the precast beam slab (6) is hoisted, checking the operation condition of each mechanism, and leveling and straightening the bridge girder erection machine;
(3) the output end of the hydraulic arm mechanism (13) extends out, the swing arm mechanism (15) is in a straight state at the moment, the bridge-shaped protecting arm (16) is in a vertical state, then the output end of the motor (14) rotates, the swing arm mechanism (15) is in the vertical state, the bridge-shaped protecting arm (16) is in a horizontal state, and the output end of the hydraulic arm mechanism (13) retracts until the inner side of the bridge-shaped protecting arm (16) abuts against the two sides of the precast beam plate (6);
(4) commanding a bridge girder erection machine to move by a commander, moving the bridge girder erection machine at a speed of 1-1.5 meters per second by the driving of a first moving wheel group (3) and a second moving wheel group (4) until the bottom of the front end of the bridge girder erection machine is suspended, wherein the bottom of a translation mechanism (8) is over against a pier, a hydraulic folding supporting leg (9) rotates to form a triangular support structure, and the translation mechanism (8) is fixed and continues to move;
(5) the bottom of a hydraulic support rod (11) moves to the position above another pier, a support plate (12) is pressed downwards to support a main beam (1), at the moment, a hydraulic folding support leg (9) is retracted, a translation mechanism (8) cancels the support of the main beam (1), moves to the side of the hydraulic support rod (11) at the front end of a bridge girder erection machine, the hydraulic folding support leg (9) rotates to form a triangular support structure, at the moment, the hydraulic support rod (11) is retracted, and the bridge girder erection machine continues to advance;
(6) the precast beam plate (6) moves to the positions above two piers, the hydraulic support rod (11) is located above one pier, the support plate (12) is pressed downwards to support the main beam (1), the hydraulic folding support leg (9) is matched to support the main beam (1), then the position of the precast beam plate (6) is aligned and measured, the output end of the hydraulic arm mechanism (13) is ejected out, the swing arm mechanism (15) is horizontal, the output end of the hydraulic arm mechanism (13) returns back, the bridge-shaped protection arm (15) is retracted, the lifting hook is put down by the lifting mechanism (5), the precast beam plate (6) is laid on the piers, and workers perform auxiliary installation on the precast beam plate (6);
(7) after the prefabricated beam plate (6) is laid, the lifting hook is retracted, the whole bridge girder erection machine retreats, the hydraulic folding supporting leg (9) is still supported, the supporting plate (12) structure is retracted, the output end of the hydraulic supporting mechanism (18) is ejected out, the main beam (1) is supported, the hydraulic folding supporting leg (9) can be retracted at the moment, then the hydraulic supporting mechanism (18) is retracted, and the whole bridge girder erection machine retreats.
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