A front outrigger assembly and a bridge girder erecting machine with the same

Abstract

The application discloses a front support leg assembly and a bridge girder erecting machine front girder with the same. The front support leg assembly comprises a telescopic front support leg, a front mounting beam, a sliding seat and a rotating mechanism. The front mounting beam is horizontally arranged. The telescopic front support leg is hinged to one side of the front mounting beam through a turnover arm. The telescopic front support leg can be turned down to be vertical relative to the front mounting beam or turned up to be horizontal and located at one side of the front mounting beam. The sliding seat is slidably arranged on the upper portion of the front mounting beam. The rotating mechanism is arranged on the upper end of the sliding seat. The front support leg assembly adopts a turnover type transformation structure design. During the transportation of the bridge girder erecting machine, the telescopic front support leg only needs to be turned up to be folded and placed, and does not need to be disassembled and split for transportation. Therefore, the bridge girder erecting machine is more flexible and fast in scene conversion, and the flowability and maneuverability of the whole bridge girder erecting machine are improved.

Description

Technical Field

[0001] This application relates to the field of bridge erection equipment, and in particular to a front outrigger assembly and a front main beam of a bridge erection machine having the same. Background Technology

[0002] A bridge launching machine is a specialized construction machine used to lift precast reinforced concrete (or prestressed concrete) beams onto bridge supports (piers). It is one of the main pieces of equipment for safe and rapid bridge construction. To ensure that the bridge launching machine can safely and stably cross the span, it is equipped with a safe and reliable support leg system.

[0003] Currently, the outrigger system of bridge erecting machines generally includes auxiliary outriggers, front outriggers, middle outriggers, and rear outriggers. During use, the front outrigger is typically fixed to the end of the front beam. During operation, after the front beam is moved as a whole, the front outrigger rests on the pier where no beam is placed, providing stable support for the entire bridge erecting machine. However, most current bridge erecting machines have a fixed front outrigger design. Before on-site construction, it is fixed to the lower end of the front beam. When the bridge erecting machine is idle or being transported, the front outrigger needs to be disassembled from the front beam and reassembled at the next construction site. Therefore, this design results in poor overall mobility of the bridge erecting machine, especially in emergency rescue and disaster relief situations, making rapid response difficult. The entire transportation and on-site setup process is extremely labor-intensive, time-consuming, and inefficient.

[0004] Therefore, it is necessary to develop a front outrigger assembly and a bridge erecting machine front main beam incorporating it to solve the above technical problems. Utility Model Content

[0005] To address the aforementioned technical problems, this utility model provides a front outrigger assembly and a front main beam of a bridge erecting machine having the assembly, which improves the poor mobility and maneuverability of existing bridge erecting machines that rely on "disassembly and transportation + on-site installation and dismantling".

[0006] The present invention solves the above-mentioned technical problems mainly through the following technical solutions: A front outrigger assembly is provided, including a telescopic front outrigger, a front mounting beam, a slide block, and a slewing mechanism. The front mounting beam is horizontally arranged, and the telescopic front outrigger is hinged to one side of the front mounting beam via a flip arm. The telescopic front outrigger can be flipped downward relative to the front mounting beam to a vertical position, or flipped upward to a horizontal position and located on one side of the front mounting beam. The slide block is slidably mounted on the upper part of the front mounting beam, and the slewing mechanism is mounted on the upper end of the slide block.

[0007] Furthermore, the lateral drive mechanism includes at least one set of telescopic cylinders, which are mounted on the upper end of the front mounting beam and connected to the end of the slide block.

[0008] Furthermore, the upper part of the front mounting beam is provided with a transverse drive mechanism connected to the slide block, the transverse drive mechanism being used to drive the slide block to slide between the two ends of the front mounting beam.

[0009] Furthermore, the telescopic front outrigger includes two sets of front telescopic outriggers, which are distributed in parallel and connected and fixed at one end by a fixed beam. The fixed beam is connected to one side of the front mounting beam through the flip arm.

[0010] Furthermore, the front telescopic outrigger includes a hollow fixed leg and a hollow movable leg. One end of the movable leg extends into the other end of the fixed leg. The fixed legs of the two sets of front telescopic outriggers are connected and fixed by the fixed beam. The fixed leg and the movable leg are respectively provided with telescopic push-pull mechanisms connected to each other.

[0011] Furthermore, the lower ends of the front mounting beam are respectively provided with front support bosses, and the telescopic front outrigger can be flipped downward relative to the front mounting beam to be vertical, so that its upper end abuts against the lower end of the front support boss. The front support boss is provided with a locking member that locks with the upper end of the telescopic front outrigger.

[0012] Furthermore, the locking component includes a locking pin, a first flange plate surrounds the lower edge of the front support boss, a support seat adapted to the front support boss is provided at one end of the telescopic front outrigger, a second flange plate is provided at the edge of the support seat, the telescopic front outrigger can be flipped downwards to be vertical relative to the front mounting beam, and the support seat abuts against the lower end of the front support boss, the locking pin passes through the first flange plate and the second flange plate to lock the front support boss and the telescopic front outrigger.

[0013] Furthermore, it also includes a front support leg track beam, which is horizontally arranged and has track grooves extending to both ends at its upper end. The lower end of the telescopic front support leg is provided with rollers adapted to the track, and the rollers roll in cooperation with the track grooves.

[0014] The beneficial effects of the front outrigger assembly of this utility model are as follows: The front outrigger assembly adopts a flip-type deformable structure design, which only needs to be flipped upwards and stacked during the transportation of the bridge erecting machine, without having to be disassembled and transported from the beam. This makes the bridge erecting machine more flexible and faster to move, and improves the overall mobility and maneuverability of the bridge erecting machine.

[0015] A bridge erecting machine front main beam is also provided, including a front main beam body and a front support leg assembly. The front support leg assembly is located below one end of the front main beam body. The slewing part of the slewing mechanism of the front support leg assembly is connected to the lower part of one end of the front main beam body. One end of the front main beam body is provided with a flipping drive assembly connected to the telescopic front support leg.

[0016] Furthermore, the flipping drive assembly includes an automatic cable reeling device, which is installed in a fitted cavity within the front main beam. The cable of the automatic cable reeling device passes through a fitted opening at the lower end of one end of the front main beam and is connected to the telescopic front outrigger.

[0017] The beneficial effects of the main beam at the front of the bridge erecting machine of this utility model are as follows: The bridge erecting machine is equipped with a front support leg assembly that can be rotated and deformed. The two do not need to be disassembled for transportation, which saves the process of disassembly and reassembly, greatly saving the efficiency of relocation and transportation. This makes the bridge erecting machine more flexible and faster to relocate, and improves the mobility and maneuverability of the entire bridge erecting machine. Attached Figure Description

[0018] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0019] Figure 1 This is a schematic diagram of the front outrigger assembly provided in this embodiment of the utility model; Figure 2 This is a schematic diagram of the front outrigger assembly provided in this embodiment of the present invention when it is assembled at the lower end of the front main beam and stacked horizontally; Figure 3 This is a schematic diagram of the front outrigger assembly provided in this embodiment of the present invention when it is flipped to a vertical position at the lower end of the front main beam. Figure 4 This is a schematic diagram of the front outrigger assembly provided in this embodiment of the present invention after it has been flipped to a vertical position and extended at the lower end of the front main beam. Figure 5 This is a schematic diagram of another embodiment of the front outrigger assembly provided in this utility model, after it is flipped to a vertical position and extended at the lower end of the front main beam. Detailed Implementation

[0020] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of them. All other embodiments obtained by those skilled in the art based on the embodiments of this application without creative effort are within the scope of protection of this application.

[0021] In the description of this application, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," and "counterclockwise," etc., indicating orientation or positional relationships based on the orientation or positional relationships shown in the accompanying drawings, are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, features defined with "first" and "second" may explicitly or implicitly include one or more of the stated features. In the description of this application, "a plurality of" means two or more, unless otherwise explicitly specified.

[0022] In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection, an electrical connection, or a connection that allows communication between them; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication between two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0023] In this application, unless otherwise expressly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature being directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature being directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0024] The following disclosure provides many different embodiments or examples for implementing different structures of this application. To simplify the disclosure, specific examples of components and arrangements are described below. Of course, these are merely examples and are not intended to limit the scope of this application. Furthermore, reference numerals and / or letters may be repeated in different examples; such repetition is for simplification and clarity and does not in itself indicate a relationship between the various embodiments and / or arrangements discussed. In addition, various specific examples of processes and materials are provided in this application, but those skilled in the art will recognize the application of other processes and / or the use of other materials.

[0025] For details, please refer to Figures 1 to 4 This application provides a front support leg assembly, taking this front support leg assembly as the front support of a bridge erecting machine as an example. Generally, the bridge erecting machine's beam includes a front beam, a middle beam, and a rear beam, with the three beams arranged in a line and their ends assembled together. The rear beam and the middle beam are respectively provided with a rear support leg assembly and a middle support leg assembly for ground support. In this embodiment, the entire front support leg assembly is installed at the lower front end of the front beam of the bridge erecting machine. In use, it rests on the pier where no beam has been erected, and together with the ground support of the support leg assemblies on the other two beams, the entire bridge erecting machine's beam can be stably supported on the ground.

[0026] The front outrigger assembly includes a telescopic front outrigger 31, a front mounting beam 32, a slide block 33, and a slewing mechanism 35.

[0027] The front mounting beam 32 is horizontally positioned at the lower end of the front beam and spans across the beam.

[0028] The telescopic front outrigger 31 is hinged to the front or rear side of the front mounting beam 32 via a flipping arm 34. The telescopic front outrigger 31 can flip downwards to a vertical position relative to the front mounting beam 32, or flip upwards to a horizontal position and retract under the beam. Especially during the transport and relocation of the bridge erecting machine, the telescopic front outrigger 31 can flip to a horizontal position, presenting a low-height "overlap" with the lower part of the beam, before being loaded onto the transport vehicle, enabling rapid transport. Upon arrival at the construction site, the telescopic front outrigger 31 can flip downwards to a vertical position and support the upper part of the pier, providing stable support for the front beam and the bridge erecting machine. The front outrigger assembly does not need to be disassembled and reassembled during the entire transport and construction process, making the bridge erecting machine relocation more flexible and faster, and improving the overall mobility and maneuverability of the bridge erecting machine.

[0029] Meanwhile, since the slide block 33 is slidably mounted on the upper part of the front mounting beam 32, the beam moves synchronously with the slide block 33 during the lateral movement of the front mounting beam 32. This design allows for adjustment of the orientation of the front outrigger assembly relative to the width of the beam, making it more flexible to use.

[0030] Furthermore, a slewing mechanism 35 is installed on the upper part of the slide block 33, and then connected to the lower end of the beam through the slewing mechanism 35. This allows the front outrigger assembly to rotate 360 ​​degrees relative to the beam in the horizontal plane through the operation of the slewing mechanism 35. Especially for bridge construction such as curved bridges or skew bridges, the design of this slewing mechanism 35 allows the bridge erecting machine beam and the front outrigger assembly to form an angle, meeting the construction operation conditions for curved bridges or skew bridges.

[0031] In this embodiment, the overall length of the telescopic front support leg 31 is adjustable, allowing it to extend or shorten. Specifically, when flipped to a vertically downward position, adjusting its length (i.e., its current height) allows it to support the ground and adjust the suspended height of the beam. Simultaneously, shortening the telescopic front support leg 31 during storage avoids it occupying a large space under the beam, and especially facilitates loading and transportation by reducing its length during transport.

[0032] In this embodiment, one end of the tilting arm 34 is fixedly connected to the telescopic front outrigger 31, and the other end extends to the side of the telescopic front outrigger 31 near the front mounting beam 32. It is then hinged to a hinge pin located on the side of the front mounting beam 32. When the telescopic front outrigger 31 tilts, it completely tilts to one side of the front mounting beam 32, and its height will not be lower than the lower end of the front mounting beam 32. In a horizontal state, the upper part of the telescopic front outrigger 31 will not be higher than the height of the slide block 33 and the slewing mechanism 35. This ensures that the front mounting beam 32 can be smoothly placed on the vehicle during transport and loading, preventing the telescopic front outrigger 31 from occupying the space below the front mounting beam 32, which could prevent the front mounting beam 32 from effectively landing on the vehicle and causing unsafe transport. Simultaneously, since the telescopic front outrigger 31 is entirely positioned on one side of the front mounting beam 32, it will not be subjected to the heavy pressure of the beam after loading, thus avoiding damage.

[0033] In some embodiments, the tilting arms 34 are provided in at least two sets, which are distributed parallel to each other at intervals.

[0034] In this embodiment, the slewing mechanism 35 can be a suitable slewing bearing with a hydraulic motor. A column is mounted on the upper part of the slewing portion of the slewing bearing, and the column is used to connect and fix it to the lower end of the beam.

[0035] In some embodiments, see Figure 1 The upper part of the front mounting beam 32 is designed with a T-shaped cross section (h in the figure). The slide block 33 has a T-shaped groove inside, which is used to slide and assemble with the T-shaped structure on the upper part of the front mounting beam 32.

[0036] In some embodiments, the upper part of the front mounting beam 32 is provided with a lateral drive mechanism (not shown in the figure) connected to the slide 33. The lateral drive mechanism is used to push the slide 33 to move along the front mounting beam 32, so that the slewing mechanism 35 connected to the slide 33 and the beam body connected to the slewing mechanism 35 can be laterally moved relative to the front mounting beam 32, that is, the position of the front outrigger assembly relative to the width direction of the beam body can be adjusted.

[0037] In some embodiments, the traverse drive mechanism may employ a hydraulic cylinder mounted on one end of the upper part of the front mounting beam 32, the telescopic rod of which is connected to one end of the slide block 33.

[0038] In some other embodiments, the lateral drive mechanism can employ two sets of hydraulic cylinders, respectively mounted at both ends of the upper part of the front mounting beam 32. The two sets of hydraulic cylinders work in sync, one pushing and the other pulling, to realize the movement of the slide block 33 relative to the front mounting beam 32.

[0039] In other embodiments, the lateral drive mechanism can be designed as two sets of automatic wire winding and unwinding devices (such as winches). The two sets of automatic wire winding and unwinding devices are respectively installed at both ends of the front mounting beam 32, and their respective wires are connected to both ends of the slide block 33. The wires of the two sets of automatic wire winding and unwinding devices are wound up and unwound in sync, so that the slide block 33 can move relative to the front mounting beam 32.

[0040] In some embodiments, see Figure 4 and Figure 5 The telescopic front outrigger 31 includes two sets of front telescopic outriggers 311, which are distributed in parallel and connected at one end by a fixed beam, forming an "H"-shaped telescopic front outrigger 31. A flip arm 34 is installed on the fixed beam to connect with the front mounting beam 32.

[0041] In this embodiment, the front telescopic outrigger 311 adopts a two-section outrigger structure design that interlocks with each other. The two sections of outrigger can be flexibly stretched or shortened relative to each other to achieve length adjustment of the front telescopic outrigger 311.

[0042] Specifically, the front telescopic outrigger 311 includes a hollow fixed leg and a hollow movable leg. One end of the movable leg extends into the other end of the fixed leg, and they are interlocked. The fixed legs of the two sets of front telescopic outriggers 311 are connected and fixed by a fixed beam. Telescopic push-pull mechanisms are installed inside both outriggers, and the length of the entire front telescopic outrigger 311 is flexibly adjusted by the telescopic push-pull action of these mechanisms. In this structure, the telescopic push-pull mechanism is hidden inside the front telescopic outrigger 311 and is not exposed, thus providing a certain degree of protection for itself. It also prevents unsafe accidents caused by accidental contact by external personnel during its telescopic operation, and the structural design is more compact and aesthetically pleasing.

[0043] Both the fixed legs and the movable legs are square tubular supports or have non-circular cross sections. The gap between them after they are inserted is very small, so that they cannot rotate relative to each other and can only extend and retract in the length direction, thus improving the stability of the structure.

[0044] The aforementioned telescopic push-pull mechanism uses a conventionally compatible hydraulic cylinder. The cylinder body is connected to the inner wall of one end of the fixed leg, and the telescopic rod is connected to the inner wall of the other end of the movable leg.

[0045] In some embodiments, a connecting beam 313 perpendicular to the two movable legs of the two sets of front telescopic outriggers 311 is fixed between the ends of the movable legs away from the fixed legs, making the movable leg structure more stable.

[0046] In some embodiments, the lower ends of the front mounting beam 32 are respectively provided with front support bosses 321. The two sets of front telescopic legs 311 of the telescopic front support leg 31 can be flipped downward relative to the front mounting beam 32 to be vertical. In this state, the upper end of the front telescopic leg 311 abuts against the lower end of the front support boss 321. Then, by locking the upper end of the telescopic front support leg 31 with the locking member provided at the front support boss 321, a relatively stable support structure can be formed. After locking, the front telescopic leg 311 no longer flips relative to the front mounting beam 32.

[0047] In some embodiments, see Figure 1 , Figure 2 and Figure 3 The locking mechanism uses a locking pin. A first flange plate (represented by a in the figure) surrounds the lower edge of the front support boss 321. A support seat adapted to the front support boss 321 is provided at one end of the telescopic front outrigger 31. A second flange plate (represented by b in the figure) is provided at the edge of the support seat. When the telescopic front outrigger 31 is flipped to the vertical position, its upper support seat will abut against the lower end of the front support boss 321, with the first flange plate above the second flange plate. Both flange plates have a pin hole adapted to the locking pin. At this time, inserting the locking pin through the pin hole will lock the front support boss 321 and the telescopic front outrigger 31 in place. When in contact, pulling out the locking pin will allow the telescopic front outrigger 31 to flexibly flip relative to the front mounting beam 32.

[0048] It should be noted that: when the telescopic front outrigger 31 includes two sets of front telescopic outriggers 311, the support base does not need to be set, and the second flange plate can be directly set on the edge of the end of the front telescopic outrigger 311 near the front mounting beam 32.

[0049] In other embodiments, the locking pin can employ an automated insertion and removal structure. Specifically, a drive structure can be provided on the side of the front support boss 321. The drive mechanism is connected to the locking pin, which is positioned above the pin hole on the first flange side plate. The drive structure drives the locking pin downward into the pin hole. The drive structure can be a small hydraulic cylinder.

[0050] In other embodiments, see Figure 1 and Figure 5 It also includes a front support leg track beam 36, which is horizontally set and has track grooves extending to both ends at its upper end. During actual construction, the front support leg track beam 36 spans the pier, and the lower end of the telescopic front support leg 31 is close to the upper end of the front support leg track beam 36. At the lower end of the telescopic front support leg 31, there is a roller 312 adapted to the track. The roller 312 extends into the track groove and rolls with the track groove. This allows the entire front support leg assembly to move relative to the width of the pier during operation, which means that the position of the bridge erecting machine in the width direction of the bridge deck can be adjusted.

[0051] In this embodiment, the front outrigger track beam 36 adopts a multi-section beam combination design, which facilitates disassembly and stacking during transportation and saves transportation space. Specifically, the front outrigger track beam 36 includes at least two sections. In use, the multiple sections of the front outrigger track beam 36 are arranged in a row, with their ends connected and fixed to each other. The middle part of the entire front outrigger track beam 36 is connected to the lower end of the telescopic front outrigger 31 in its vertical state. A transition beam can be inserted between the ends of adjacent beams, and then the ends of the front outrigger track beam 36 are bolted to the inserted transition beam to achieve assembly. During transportation, the multiple sections of the front outrigger track beam 36 are disassembled, stacked vertically, and mounted on the transport vehicle.

[0052] In this embodiment, when there is a connecting beam, the rollers 312 are installed at the lower part of the connecting beam 313, with multiple rollers spaced apart. When there is no connecting beam 313, the rollers 312 are installed at the end of the front telescopic outrigger 311 (the lower end of the front telescopic outrigger 311 in a vertical state).

[0053] In some embodiments, the roller 312 is specifically mounted on the bottom of the connecting beam 313 via an axle. Specifically, a groove or cavity is formed at the bottom of the connecting beam 313, and the roller 312 is mounted in the groove or cavity via the axle. The lower surface of the roller 312 protrudes from the lower part of the connecting beam 313. The axle of the roller 312 can be connected to a power device for driving its rotation, such as a hydraulic motor, or a combination of a hydraulic motor and gears. Multiple rollers 312 are provided at the bottom of the connecting beam 313 and are spaced apart along the length of the connecting beam 313.

[0054] Of course, the roller 312 can also be designed as a self-powered wheel, such as a hub motor.

[0055] In this embodiment, a channel extending along the length of the front support leg track beam 36 can be provided on the upper part of the channel. A groove or cavity adapted to the roller 312 is provided on the bottom wall of the channel. A sliding member adapted to the aforementioned channel is provided at the bottom of the connecting beam 313. The sliding member is divided into two parts, located on both sides of the roller 312. The two parts of the sliding member extend into the channel and are slidably assembled with the inner walls of the channel on both sides, so that the connecting beam 313 and the front support leg track beam 36 can be raised and lowered together and suspended in the air. After landing, the connecting beam 313 can also be moved relative to the front support leg track beam 36 by rotating the roller 312. The channel is a hollow T-shaped channel that extends to both ends of the front support leg track beam 36. An opening is provided at the top of the channel for the roller 312 to enter. The sliding members on both sides are stepped and are locked on both sides of the inner wall of the channel. When suspended in the air, the front support leg track beam 36 will not fall off. During assembly, the sliding member can be inserted from one end of the channel.

[0056] Please see Figures 2 to 4 This embodiment also provides a front main beam of a bridge erecting machine, including a front main beam body 37 and a front support leg assembly. The front support leg assembly is located below one end of the front main beam body 37. The rotating part of the rotating mechanism 35 of the front support leg assembly is connected and fixed to the lower part of one end of the front main beam body 37, so that the front main beam body 37 can be flipped up and down relative to the front support leg assembly and rotated 360 degrees in the horizontal plane.

[0057] In this embodiment, a flipping drive assembly connected to the telescopic front outrigger 31 is provided at one end of the front main beam 37. The flipping drive assembly is used to flip the telescopic front outrigger 31, making the operation more flexible and automated.

[0058] In some embodiments, the flipping drive assembly includes an automatic winding and unwinding device. An inner cavity is provided inside one end of the front main beam 37, and an opening communicating with the inner cavity is provided at the lower part. The automatic winding and unwinding device is installed in the inner cavity of the front main beam 37. The cable of the automatic winding and unwinding device passes through the opening at the lower part of the front main beam 37 and is connected to the telescopic front support leg 31. When the automatic winding and unwinding device winds up, it drives the telescopic front support leg 31 to flip upward to a horizontal position and overlap at the lower part of the front main beam 37 for easy transportation. During operation, the automatic winding and unwinding device unwinds, and the telescopic front support leg 31 can automatically flip downward until it is vertically supported at the lower end of the front mounting beam 32.

[0059] Ideally, the cable of the automatic cable retraction device is connected to the end of the telescopic front outrigger 31 furthest from the front mounting beam 32. Referring to the aforementioned embodiment, the cable of the automatic cable retraction device can be connected to a connecting beam 313 connected between the ends of the movable legs.

[0060] In some other embodiments, the tilting drive assembly may employ a hydraulic cylinder of an appropriate model, which is mounted at the lower end of the front main beam 37. The telescopic rod is connected to one side of the telescopic front outrigger 31 via a hinge, and the extension and retraction of the hydraulic cylinder can drive the telescopic front outrigger 31 to tilt up and down.

[0061] Of course, an upwardly extending groove can also be opened at the lower part of one end of the front main beam 37, and the hydraulic cylinder of the tilting drive assembly can be installed in the groove. The telescopic rod is exposed and connected to one side of the telescopic front outrigger 31 through a hinge.

[0062] It should be added that the bridge erecting machine is equipped with hydraulic oil lines adapted to the oil circuit of the oil cylinder, as well as corresponding pipelines and solenoid valves at the valve ports, and is connected to a complete control system to realize automated control of the oil cylinder operation.

[0063] In the above embodiments, the descriptions of each embodiment have different focuses. For parts not described in detail in a certain embodiment, please refer to the relevant descriptions in other embodiments.

[0064] The foregoing has provided a detailed description of a front outrigger assembly and a bridge erecting machine front main beam having the same assembly. Specific examples have been used to illustrate the principles and implementation methods of this application. The descriptions of the above embodiments are only for the purpose of helping to understand the technical solutions and core ideas of this application. Those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. These modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this application.

Claims

1. A front outrigger assembly, characterized in that: It includes a telescopic front outrigger (31), a front mounting beam (32), a slide (33), and a slewing mechanism (35). The front mounting beam (32) is horizontally arranged. The telescopic front outrigger (31) is hinged to one side of the front mounting beam (32) through a flip arm (34). The telescopic front outrigger (31) can be flipped downward relative to the front mounting beam (32) to be vertical, or flipped upward to be horizontal and located on one side of the front mounting beam (32). The slide (33) is slidably mounted on the upper part of the front mounting beam (32). The slewing mechanism (35) is mounted on the upper end of the slide (33).

2. The front outrigger assembly according to claim 1, characterized in that: The upper part of the front mounting beam (32) is provided with a transverse drive mechanism connected to the slide (33), which is used to drive the slide (33) to slide between the two ends of the front mounting beam (32).

3. A front outrigger assembly according to claim 2, characterized in that: The lateral drive mechanism includes at least one set of telescopic cylinders, which are mounted on the upper end of the front mounting beam (32) and connected to the end of the slide block (33).

4. A front outrigger assembly according to claim 1, characterized in that: The telescopic front outrigger (31) includes two sets of front telescopic outriggers (311), which are distributed in parallel. One end of the two sets of front telescopic outriggers (311) is connected and fixed by a fixed beam. The fixed beam is connected to one side of the front mounting beam (32) through the flip arm (34).

5. A front outrigger assembly according to claim 4, characterized in that: The front telescopic outrigger (311) includes a hollow fixed leg and a hollow movable leg. One end of the movable leg extends into the other end of the fixed leg. The two sets of fixed legs of the front telescopic outrigger (311) are connected and fixed by the fixed beam. The fixed leg and the movable leg are respectively provided with telescopic push-pull mechanisms connected to each other.

6. A front outrigger assembly according to claim 1, characterized in that: The lower ends of the front mounting beam (32) are respectively provided with front support bosses (321). The telescopic front outrigger (31) can be flipped downward relative to the front mounting beam (32) to be vertical, and its upper end abuts against the lower end of the front support boss (321). The front support boss (321) is provided with a locking member that locks with the upper end of the telescopic front outrigger (31).

7. A front outrigger assembly according to claim 6, characterized in that: The locking component includes a locking pin. The lower edge of the front support boss (321) is surrounded by a first flange plate. One end of the telescopic front outrigger (31) is provided with a support seat adapted to the front support boss (321). The edge of the support seat is provided with a second flange plate. The telescopic front outrigger (31) can be flipped downward relative to the front mounting beam (32) to be vertical, so that the support seat abuts against the lower end of the front support boss (321). The locking pin passes through the first flange plate and the second flange plate to lock the front support boss (321) and the telescopic front outrigger (31).

8. A front outrigger assembly according to any one of claims 1 to 7, characterized in that: It also includes a front support leg track beam (36), which is horizontally arranged and has a track groove extending to both ends at its upper end. The lower end of the telescopic front support leg (31) is provided with a roller (312) adapted to the track, and the roller (312) rolls in cooperation with the track groove.

9. A front main beam of a bridge erecting machine, characterized in that: Includes a front main beam (37) and a front outrigger assembly as described in any one of claims 1 to 8, wherein the front outrigger assembly is disposed below one end of the front main beam (37), the rotating part of the rotating mechanism (35) of the front outrigger assembly is connected to the lower part of one end of the front main beam (37), and one end of the front main beam (37) is provided with a flip drive assembly connected to the telescopic front outrigger (31).

10. The front main beam of a bridge erecting machine according to claim 9, characterized in that: The flip drive assembly includes an automatic cable reel-in / reel-out device, which is installed in a fitted cavity in the front main beam (37). The cable of the automatic cable reel-in / reel-out device passes through a fitted opening at the lower end of one end of the front main beam (37) and is connected to the telescopic front outrigger (31).

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