A bridge erecting machine capable of realizing small curve line

Abstract

The application discloses a bridge erecting machine capable of realizing small curve line and belongs to the technical field of bridge erecting machines. The bridge erecting machine capable of realizing small curve line comprises a main beam arranged on a bridge, two hoisting trolleys movably arranged on the main beam in the length direction, a rear support leg arranged at the end of the main beam, a mounting seat connected with the rear support leg and rotatably arranged on the main beam through a rotating shaft, a front support leg arranged at the front end of the main beam and provided with a position adjusting mechanism for driving the main beam to rotate, and a middle support leg arranged on the main beam and arranged between the front support leg and the rear support leg. The position adjusting mechanism is used for driving the main beam to deflect the box girder, so that the box girder is convenient for the construction of the small curve line. The auxiliary supporting mechanism is used for enhancing the connection stability between the front support leg and the bridge, effectively supporting the main beam and the box girder deviated from the straight line, guaranteeing the transverse deviation stability of the main beam system and meeting the demand of the small-radius curve span construction.

Description

Technical Field

[0001] This invention relates to the field of bridge erecting machine technology, and in particular to a bridge erecting machine capable of traversing small curved lines. Background Technology

[0002] With the development of urban economies and the surge in vehicles, the existing urban layout has limited road expansion. To alleviate urban traffic congestion, elevated bridges and rail transit have inevitably become important means of easing traffic pressure. In the past, the construction of elevated bridges in cities generally only allowed bridge erecting machines to complete the erection of straight sections of the bridge, while curved sections required in-situ casting-in-place construction, which took longer and had a significant impact on traffic along the construction route.

[0003] Existing bridge erecting machines for bridges with small radii of curvature typically use hydraulic cylinders to adjust the position of the main girder and the box girder below it, causing the box girder to shift relative to the original straight section of the bridge. However, during the actual construction of bridges with small radii of curvature, the main girder carries the box girder and shifts it to the support legs of the bridge erecting machine. The weight at the bottom of the bridge erecting machine is insufficient, resulting in unstable support. Furthermore, external force is required for installation at the bottom, which is time-consuming, costly, and reduces the efficiency of bridge erection. Summary of the Invention

[0004] The purpose of this invention is to solve the problems existing in the prior art and to propose a bridge erecting machine that can realize small curve lines.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] A bridge erecting machine capable of traversing small curves includes a main beam mounted on a bridge, with two lifting trolleys movable along its length mounted on the main beam, and further includes:

[0007] The rear support leg is located at the end of the main beam, and the main beam is rotatably mounted with a mounting base connected to the rear support leg via a rotating shaft.

[0008] The front support leg is located at the front end of the main beam and is equipped with an adjustment mechanism for driving the main beam to rotate.

[0009] A middle support leg, wherein the middle support leg is mounted on the main beam and positioned between the front and rear support legs, and the main beam is equipped with a first shifting trolley that cooperates with the middle support leg; and

[0010] An auxiliary support mechanism is provided on the front outrigger and is used to assist in connecting the front outrigger and the bridge.

[0011] Preferably, the adjustment mechanism includes a movable seat disposed on the top of the front support leg, and a first hydraulic rod is disposed on both sides of the inner wall of the movable seat. The ends of the two first hydraulic rods away from the movable seat are connected to a second shifting trolley, and the second shifting trolley is slidably connected to the main beam.

[0012] Preferably, the top of the first transfer trolley is fixed with a slider, and the top of the middle support leg is provided with an arc-shaped groove for the slider to slide.

[0013] Preferably, the auxiliary support mechanism includes supports fixed on both sides of the front outrigger, each support having a fixed shaft fixedly mounted on it, a first connecting plate rotatably connected to the fixed shaft, a second connecting plate rotatably connected to the end of the first connecting plate away from the fixed shaft via a first pin, a connecting plate rotatably connected to the end of the second connecting plate away from the first connecting plate via a second pin, a clamping plate fixedly mounted on the connecting plate, a screw hole provided on the clamping plate, and fastening bolts movably disposed between the screw holes on the clamping plates on both sides of the auxiliary support mechanism.

[0014] Preferably, a support plate is fixedly mounted on the movable seat, and a second hydraulic rod is fixedly mounted on the support plate. The end of the second hydraulic rod away from the support plate is movably connected to the first connecting plate.

[0015] Preferably, the first connecting plate has a working groove, a screw is rotatably connected in the working groove, a driven bevel gear is provided on the screw, a fixed bevel gear that meshes with the driven bevel gear is fixed on the fixed shaft, a sleeve is threaded to the outside of the screw, and a swing rod is movably arranged between the sleeve and the second connecting plate.

[0016] Preferably, the first connecting plate has a movable groove, and the fixed bevel gear is placed in the movable groove.

[0017] Preferably, the end of the screw away from the driven bevel gear passes through the first connecting plate and is connected to a drum. A pull rope is wound around the drum, and the end of the pull rope away from the drum is connected to the connecting plate.

[0018] Preferably, the rear outrigger, front outrigger, and middle outrigger are all equipped with a hydraulic vertical telescopic adjustment mechanism.

[0019] Preferably, the bridge includes piers and box girders installed on the piers, and the piers include abutments and pier bodies.

[0020] Compared with the prior art, the present invention provides a bridge erecting machine that can achieve small curve lines, and has the following beneficial effects:

[0021] 1. This bridge erecting machine, capable of accommodating small curves, uses an adjustment mechanism to cause the main beam to rotate, making it easier to erect the box girder on small curves. The auxiliary support mechanism strengthens the connection stability between the front outrigger and the bridge, effectively supporting the main beam and box girder that have deviated from the straight line, ensuring the lateral offset stability of the main beam system and meeting the needs of small radius curve span construction.

[0022] 2. This bridge erecting machine, capable of navigating small curves, uses a second hydraulic rod to drive the first connecting plate to deflect. This deflection causes the driven bevel gear to mesh with the fixed bevel gear, which in turn drives the screw to rotate. The sleeve on the screw, via a swing rod, pushes the second connecting plate to rotate around the first pin. During this process, the drum at the screw end no longer winds up the pull rope. The connecting plate and clamping plate rotate around the second pin under their own weight, allowing the deflection angles of the first and second connecting plates to match the pier surface. The clamping plate, connected to the second connecting plate via the connecting plate, fits snugly against the pier body, allowing the auxiliary support mechanism to be retracted when not in use, saving space. When in use, the auxiliary support mechanism quickly unfolds. Workers then use fastening bolts to quickly align the clamping plates on both sides of the pier body, clamping them to the pier body and improving the stability of the connection between the front outrigger and the pier body. This effectively supports the main beam and box girder that have deviated from a straight line, ensuring the lateral stability of the main beam system and improving bridge erection efficiency. Attached Figure Description

[0023] Figure 1 This is a schematic diagram of the structure of the present invention;

[0024] Figure 2 This is a top view of the main beam of the present invention when it is offset;

[0025] Figure 3 This is a schematic diagram of the structure of the middle support leg of the present invention;

[0026] Figure 4 This is a schematic diagram of the auxiliary support mechanism of the present invention. Figure 1 ;

[0027] Figure 5 This is a schematic diagram of the auxiliary support mechanism of the present invention. Figure 2 ;

[0028] Figure 6 This is a partial cross-sectional structural diagram of the auxiliary support mechanism of the present invention;

[0029] Figure 7 For the present invention Figure 6 A magnified schematic diagram of part A in the middle.

[0030] In the diagram: 1. Bridge; 101. Pier; 1011. Abutment; 1012. Pier body; 102. Box girder; 2. Main beam; 3. Lifting trolley; 4. Rear outrigger; 5. Mounting seat; 501. Rotary shaft; 6. Front outrigger; 601. Movable seat; 602. Second shifting trolley; 603. First hydraulic rod; 7. Middle outrigger; 701. First shifting trolley; 702. Sliding block; 703. Arc groove; 8. Support 801. Fixed shaft; 802. Fixed bevel gear; 9. First connecting plate; 10. Second connecting plate; 11. Connecting plate; 111. Clamping plate; 112. Screw hole; 113. Fastening bolt; 12. Support plate; 121. Second hydraulic rod; 13. Working groove; 131. Screw; 132. Driven bevel gear; 133. Sleeve; 134. Swing rod; 14. Drum; 141. Pull rope; 15. Movable groove. Detailed Implementation

[0031] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative effort are within the scope of protection of the present invention.

[0032] In the description of this invention, it should be noted that the terms "upper," "lower," "inner," "outer," "top / bottom," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing the invention and for 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. Therefore, they should not be construed as limitations on the invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0033] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installed," "equipped with," "sleeved / connected," "connected," etc., should be interpreted broadly. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be a connection within two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0034] Example: Refer to Figure 1 , Figure 2 , Figure 3 , Figure 4 and Figure 5A bridge erecting machine capable of traversing small curves includes a main beam 2 mounted on a bridge 1, with two lifting trolleys 3 movable along its length on the main beam 2, and further includes:

[0035] The rear support leg 4 is located at the end of the main beam 2. The main beam 2 is rotatably mounted with a mounting base 5 connected to the rear support leg 4 via a rotating shaft 501.

[0036] Front support leg 6 is located at the front end of the main beam 2, and the front support leg 6 is equipped with an adjustment mechanism for driving the main beam 2 to rotate.

[0037] The middle support leg 7 is mounted on the main beam 2 and positioned between the front support leg 6 and the rear support leg 4. A first shifting trolley 701, which mates with the middle support leg 7, is mounted on the main beam 2.

[0038] An auxiliary support mechanism is installed on the front outrigger 6 and is used to assist in connecting the front outrigger 6 and the bridge 1.

[0039] Furthermore, hydraulic vertical telescopic adjustment mechanisms are provided on the rear outrigger 4, front outrigger 6, and middle outrigger 7.

[0040] Furthermore, the bridge 1 includes a pier 101 and a box girder 102 installed on the pier 101. The pier 101 includes abutment 1011 and pier body 1012.

[0041] Specifically, the main beam 2 is equipped with a front support leg 6, a middle support leg 7, a rear support leg 4, and a lifting trolley 3. The front support leg 6, the middle support leg 7, and the rear support leg 4 all adopt hydraulic vertical telescopic adjustment mechanisms, which are existing technologies used for the transfer and erection of the box girder 102 by the bridge erecting machine, and will not be described in detail here. The present invention uses an adjustment mechanism to make the main beam 2 drive the box girder 102 to be erected to deflect via the lifting trolley 3, thereby promoting the adaptive lateral movement of the main beam 2 system. This makes the position of the box girder 102 convenient for the construction of small-radius curved lines. The auxiliary support mechanism strengthens the connection stability between the front support leg 6 and the bridge 1, effectively supporting the main beam 2 and the box girder 102 that have deviated from the straight line, ensuring the lateral offset stability of the main beam 2 system, and meeting the needs of small-radius curved span construction.

[0042] Reference Figure 1 , Figure 2 , Figure 3 , Figure 4 and Figure 5 As a preferred technical solution of the present invention, the adjustment mechanism includes a movable seat 601 set on the top of the front support leg 6. Both sides of the inner wall of the movable seat 601 are provided with first hydraulic rods 603. The ends of the two first hydraulic rods 603 away from the movable seat 601 are connected to a second shifting trolley 602. The second shifting trolley 602 is slidably connected to the main beam 2.

[0043] Furthermore, a slider 702 is fixedly provided on the top of the first transfer trolley 701, and an arc-shaped groove 703 for sliding the slider 702 is provided on the top of the middle support leg 7.

[0044] Specifically, when the adjustment mechanism is working, the first hydraulic rod 603 is controlled to push the second shifting trolley 602 on one side of the movable seat 601, and the first hydraulic rod 603 on the other side pulls the second shifting trolley 602. This causes the second shifting trolley 602 to drive the main beam 2 to shift around the pivot 501. During the shift of the main beam 2, the first shifting trolley 701 slides in the arc groove 703 through the slider 702, which improves the stability of the main beam 2 shift. The main beam 2 drives the box girder 102 to rotate synchronously through the lifting trolley 3, so that the position of the box girder 102 is convenient for the construction of small curved lines.

[0045] Reference Figure 4 , Figure 5 , Figure 6 and Figure 7 As a preferred technical solution of the present invention, the auxiliary support mechanism includes supports 8 fixed on both sides of the front support leg 6. Each support 8 is fixed with a fixed shaft 801. A first connecting plate 9 is rotatably connected to the fixed shaft 801. A second connecting plate 10 is rotatably connected to the end of the first connecting plate 9 away from the fixed shaft 801 through a first pin. A connecting plate 11 is rotatably connected to the end of the second connecting plate 10 away from the first connecting plate 9 through a second pin. A clamping plate 111 is fixed on the connecting plate 11. A screw hole 112 is opened on the clamping plate 111. Fastening bolts 113 are movably arranged between the screw holes 112 on the clamping plates 111 on both sides of the auxiliary support mechanism.

[0046] Furthermore, a support plate 12 is fixedly mounted on the movable seat 601, and a second hydraulic rod 121 is fixedly mounted on the support plate 12. The end of the second hydraulic rod 121 away from the support plate 12 is movably connected to the first connecting plate 9.

[0047] Furthermore, a working groove 13 is provided on the first connecting plate 9, and a screw 131 is rotatably connected in the working groove 13. A driven bevel gear 132 is provided on the screw 131, and a fixed bevel gear 802 that meshes with the driven bevel gear 132 is fixed on the fixed shaft 801. A sleeve 133 is threadedly connected to the outside of the screw 131, and a swing rod 134 is movably provided between the sleeve 133 and the second connecting plate 10.

[0048] Furthermore, the first connecting plate 9 has a movable groove 15, and the fixed bevel gear 802 is placed in the movable groove 15.

[0049] Furthermore, the end of the screw 131 away from the driven bevel gear 132 passes through the first connecting plate 9 and is connected to the drum 14. A pull rope 141 is wound and connected to the drum 14, and the end of the pull rope 141 away from the drum 14 is connected to the connecting plate 11.

[0050] Specifically, the auxiliary support mechanism automatically retracts when not in use, saving its space, and quickly unfolds when in use, improving the efficiency of bridge erection.

[0051] The specific steps for deploying the auxiliary support mechanism are as follows: The first connecting plate 9 is deflected around the fixed shaft 801 by the second hydraulic rod 121. When the first connecting plate 9 deflects, the driven bevel gear 132 meshes with the fixed bevel gear 802, driving the screw 131 to rotate. The sleeve 133 on the screw 131 pushes the second connecting plate 10 to rotate around the first pin shaft via the swing rod 134. During this process, the drum 14 at the end of the screw 131 no longer winds up the pull rope 141. The connecting plate 11 and the clamping plate 111 rotate around the second pin shaft under their own weight, thus adapting the deflection angles of the first connecting plate 9 and the second connecting plate 10 and allowing them to pass over the pier 1011 surface. The clamping plate 111 connected to the second connecting plate 10 by the connecting plate 11 fits against the pier body 1012. Then, the workers use fastening screws... Bolt 113 quickly connects and aligns the clamping plates 111 on both sides of the pier 1012, so that the clamping plates 111 clamp the pier 1012 (it should be noted that the lengths of the first connecting plate 9, the second connecting plate 10, and the clamping plates 111 should be made according to the actual dimensions of the pier 101, so that the first connecting plate 9 and the second connecting plate 10 can smoothly pass over the pier 1011 when deflected, and after the second connecting plate 10 passes over the pier 1011, the clamping plates 111 fit against the pier 1012). The operation is simple, which can reduce the workload and intensity of the workers, improve the construction efficiency of the bridge 1, improve the connection stability between the front support leg 6 and the pier 1012, and enable the front support leg 6 to cooperate with the pier 1012 to bear the load when the main beam 2 is offset, thereby effectively supporting the main beam 2 and the box girder 102 that have offset out of the straight line, and ensuring the lateral offset stability of the main beam 2 system.

[0052] The above description is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.

Claims

1. A bridge erecting machine capable of traversing small curves, comprising a main beam (2) mounted on a bridge (1), wherein two lifting trolleys (3) movable along their length are mounted on the main beam (2), characterized in that, Also includes: The rear support leg (4) is located at the end of the main beam (2), and the main beam (2) is rotatably provided with a mounting seat (5) connected to the rear support leg (4) via a rotating shaft (501). Front support leg (6), the front support leg (6) is located at the front end of the main beam (2), and the front support leg (6) is provided with an adjustment mechanism for driving the main beam (2) to rotate; The middle support leg (7) is set on the main beam (2) and placed between the front support leg (6) and the rear support leg (4). The main beam (2) is provided with a first shifting trolley (701) that cooperates with the middle support leg (7). as well as An auxiliary support mechanism is provided on the front outrigger (6) and is used to assist in connecting the front outrigger (6) and the bridge (1). The adjustment mechanism includes a movable seat (601) set on the top of the front support leg (6). The movable seat (601) has a first hydraulic rod (603) on both sides of its inner wall. The two first hydraulic rods (603) are connected to a second shifting trolley (602) at the ends away from the movable seat (601). The second shifting trolley (602) is slidably connected to the main beam (2). The auxiliary support mechanism includes supports (8) fixed on both sides of the front outrigger (6). Each support (8) is fixed with a fixed shaft (801). A first connecting plate (9) is rotatably connected to the fixed shaft (801). A second connecting plate (10) is rotatably connected to the end of the first connecting plate (9) away from the fixed shaft (801) via a first pin. A connecting plate (11) is rotatably connected to the end of the second connecting plate (10) away from the first connecting plate (9) via a second pin. A clamping plate (111) is fixed on the connecting plate (11). A screw hole (112) is opened on the clamping plate (111). A fastening bolt (113) is movably arranged between the screw holes (112) on the clamping plates (111) on both sides of the auxiliary support mechanism. A support plate (12) is fixedly provided on the movable seat (601), and a second hydraulic rod (121) is fixedly provided on the support plate (12). The end of the second hydraulic rod (121) away from the support plate (12) is movably connected to the first connecting plate (9). The first connecting plate (9) has a working groove (13) and a screw (131) is rotatably connected in the working groove (13). A driven bevel gear (132) is provided on the screw (131). A fixed bevel gear (802) that meshes with the driven bevel gear (132) is fixed on the fixed shaft (801). A sleeve (133) is threaded to the outside of the screw (131). A swing rod (134) is movably arranged between the sleeve (133) and the second connecting plate (10). The end of the screw (131) away from the driven bevel gear (132) passes through the first connecting plate (9) and is connected to a drum (14). A pull rope (141) is wound around the drum (14), and the end of the pull rope (141) away from the drum (14) is connected to the connecting plate (11).

2. A bridge erecting machine capable of traversing small curved lines according to claim 1, characterized in that, The top of the first transfer trolley (701) is fixed with a slider (702), and the top of the middle support leg (7) is provided with an arc groove (703) for sliding of the slider (702).

3. A bridge erecting machine capable of traversing small curved lines according to claim 1, characterized in that, The first connecting plate (9) has a movable groove (15) and the fixed bevel gear (802) is placed in the movable groove (15).

4. A bridge erecting machine capable of traversing small curved lines according to claim 1, characterized in that, The rear outrigger (4), front outrigger (6), and middle outrigger (7) are all equipped with hydraulic vertical telescopic adjustment mechanisms.

5. A bridge erecting machine capable of traversing small curved lines according to claim 1, characterized in that, The bridge (1) includes a pier (101) and a box girder (102) installed on the pier (101). The pier (101) includes abutment (1011) and pier body (1012).

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