Rear supporting leg and bridge girder erection machine

Abstract

The utility model relates to the technical field of construction mechanical equipment, and provides a rear supporting leg and a bridge erecting machine. Wherein the rear supporting leg comprises a frame main body, a transverse driving piece and a transverse moving part; one end of the frame body is connected with a girder of the bridge girder erection machine, and the transverse moving part is slidably connected with the other end of the frame body; the transverse driving piece is connected between the frame body and the transverse moving part so as to drive the frame body to transversely move along the main beam relative to the transverse moving part. The transverse moving part and the frame body support the main beam on the bridge surface of the bridge head, and when the direction of the main beam deviates, the transverse driving piece drives the frame body to move in the transverse direction of the main beam relative to the transverse moving part, so that the direction of the main beam is adjusted. The transverse moving function of the rear supporting leg is achieved through mutual cooperation of the frame body, the transverse moving part and the transverse driving piece, a sliding structure does not need to be arranged between the frame body and the main beam, the mounting structure between the rear supporting leg and the main beam is simplified, and the convenience of mounting and dismounting operation of the rear supporting leg and the main beam is improved.

Description

Technical Field

[0001] The present application relates to the technical field of construction machinery and equipment, and particularly relates to a rear support leg and a bridge erecting machine. Background Art

[0002] A bridge erecting machine is a commonly used device for transporting and placing beam slabs on preset bridge piers. The bridge erecting machine includes a main beam, a front support leg arranged at the front end of the main beam, and a rear support leg arranged at the rear end of the main beam. The front support leg and the rear support leg support the main beam on the bridge deck. When the bridge erecting machine is erecting a bridge, it is necessary to erect the main beam on the center line of the bridge to be erected, so that the beam slabs can be installed at the designated positions after being transported through the main beam. However, when the bridge erecting machine is erecting a curved bridge, the multiple bridge piers of the curved bridge are arranged at intervals along the curve, and the main beam extends along the center line of the bridge deck at the bridge head, which will cause a position offset between the front end of the main beam and the adjacent bridge pier downstream of the bridge head, resulting in an offset between the main beam and the center line of the bridge to be erected. Therefore, usually the rear support leg needs to have a lateral movement function, so that the rear support leg moves laterally to adjust the orientation of the main beam, and the main beam is arranged along the center line of the bridge to be erected after erection.

[0003] However, in order to realize the lateral movement function of the rear support leg, usually the rear support leg is slidably connected to the main beam, which makes the connection structure between the rear support leg and the main beam complex and affects the convenience of the disassembly and installation operations of the rear support leg and the main beam. Utility Model Content

[0004] In order to solve the above technical problems or at least partially solve the above technical problems, the present application provides a rear support leg and a bridge erecting machine.

[0005] The present application provides a rear support leg for being installed on the main beam of a bridge erecting machine, including a frame body, a lateral driving member, and a lateral moving part;

[0006] One end of the frame body is connected to the main beam of the bridge erecting machine, and the lateral moving part is slidably connected to the other end of the frame body;

[0007] The lateral driving member is connected between the frame body and the lateral moving part to drive the frame body to move laterally relative to the lateral moving part along the transverse direction of the main beam.

[0008] Optionally, one end of the frame body is rotatably connected to the main beam, a rotation driving member is rotatably connected to the frame body, and the rotation driving member is rotatably connected to the main beam, so that the rotation driving member drives the frame body to switch between a working position and a flipping position;

[0009] The working position is a position perpendicular to the main beam, and the flipping position is a position attached to one side of the main beam.

[0010] Optionally, a support rod is rotatably arranged on the frame body, the support rod extends longitudinally along the main beam, a movable sleeve is rotatably arranged on the main beam, and one end of the support rod away from the frame body is movably inserted into the movable sleeve;

[0011] The support rod is provided with a second through hole and a first through hole, and a positioning and mounting member is detachably connected to the movable sleeve;

[0012] When the frame body is in the working position, the positioning and mounting member is detachably connected to the first through hole, and when the frame body is in the flipping position, the positioning and mounting member is detachably connected to the second through hole.

[0013] Optionally, the frame body includes an upper cross beam, a lower beam assembly and a lifting driving member, and the upper cross beam is movably connected to the lower beam assembly;

[0014] The lifting driving member is connected between the upper cross beam and the lower beam assembly to drive the lower beam assembly to approach or move away from the upper cross beam;

[0015] The upper cross beam is rotatably connected to the main beam, the rotation driving member is connected to the upper cross beam, and the lateral moving part is slidably connected to a side of the lower beam assembly facing away from the upper cross beam.

[0016] Optionally, the lower beam assembly includes a lower cross beam, a moving beam and two guide posts. The lower cross beam is arranged opposite to the upper cross beam, and the two guide posts are connected to a side of the lower cross beam facing the upper cross beam. Guide sleeves are arranged at both ends of the upper cross beam, and the two guide posts are movably inserted into the two guide sleeves in one-to-one correspondence;

[0017] The moving beam is arranged between the upper cross beam and the lower cross beam and is detachably connected to the guide posts, and the lifting driving member is connected between the moving beam and the upper cross beam.

[0018] Optionally, a first positioning member is arranged on the frame body, a second positioning member is arranged on the lateral moving part, and when the frame body switches between the working position and the flipping position, the first positioning member and the second positioning member are connected to each other through a connecting member. When the frame body moves transversely along the main beam relative to the lateral moving part, the connecting member is separated from the first positioning member and the second positioning member;

[0019] And / or, an auxiliary positioning member is arranged on the frame body, a positioning pin is movably arranged on the auxiliary positioning member, and when the frame body switches between the working position and the flipping position, the positioning pin is connected to the lateral moving part. When the frame body moves transversely along the main beam relative to the lateral moving part, the positioning pin is separated from the lateral moving part.

[0020] Optionally, the lateral moving part includes a traveling beam and a traveling wheel set mounted on the traveling beam;

[0021] The traveling beam is slidably connected to the frame body. The traveling wheel set is disposed on a side of the traveling beam facing away from the frame body, and the lateral driving member is connected between the traveling beam and the frame body.

[0022] Optionally, the traveling wheel set includes two rolling wheels. On a side of the traveling beam facing away from the frame body, there are provided two first mounting portions and two second mounting portions. The two first mounting portions are spaced apart along the lateral direction of the main beam. The two second mounting portions are both disposed between the two first mounting portions, and the two second mounting portions are spaced apart along the lateral direction of the main beam. The two first mounting portions are symmetrically arranged about the midpoint of the traveling beam along the lateral direction of the main beam, and the two second mounting portions are symmetrically arranged about the midpoint of the traveling beam along the lateral direction of the main beam. The two rolling wheels are respectively connected to the two first mounting portions or the two rolling wheels are respectively connected to the two second mounting portions.

[0023] Optionally, the traveling wheel set includes a synchronizing rod, a steering driving member, a plurality of steering structures, and a plurality of wheel body assemblies;

[0024] The plurality of steering structures are spaced apart along the lateral direction of the main beam on the traveling beam, and the plurality of wheel body assemblies are respectively connected to the plurality of steering structures in one-to-one correspondence;

[0025] The steering driving member is disposed on the frame body and connected to any one of the steering structures. The synchronizing rod is disposed on one side of the plurality of steering structures along the longitudinal direction of the main beam and extends along the lateral direction of the main beam. The plurality of steering structures are interconnected by the synchronizing rod so that the steering driving member drives the plurality of steering structures to rotate in the same direction by the same angle.

[0026] This application also provides a bridge erecting machine, including a main beam and a rear support leg as described in any one of the above;

[0027] One end of the frame body away from the lateral moving part is connected to the main beam.

[0028] The technical solution provided by this application has the following advantages compared with the prior art:

[0029] The rear outrigger and the bridge erecting machine provided by this application include a frame main body, a transverse driving member, and a transverse moving part; one end of the frame main body is connected to the main beam of the bridge erecting machine, and the transverse moving part is slidably connected to the other end of the frame main body; the transverse driving member is connected between the frame main body and the transverse moving part to drive the frame main body to move transversely along the main beam relative to the transverse moving part. The transverse moving part and the frame main body support the main beam on the bridge deck at the bridgehead. When the orientation of the main beam deviates, the transverse driving member drives the frame main body to move transversely along the main beam relative to the transverse moving part, so as to drive the end of the main beam provided with the rear outrigger and the end of the main beam far from the rear outrigger to move relative to each other, thereby adjusting the orientation of the main beam and enabling the main beam to be arranged along the center line of the bridge to be erected. The transverse movement function of the rear outrigger is realized through the mutual cooperation of the frame main body, the transverse moving part, and the transverse driving member. There is no need to set a sliding structure between the frame main body and the main beam, which simplifies the installation structure between the rear outrigger and the main beam and improves the convenience of the installation and disassembly operations of the rear outrigger and the main beam. Brief Description of the Drawings

[0030] The drawings here are incorporated into the specification and form a part of this specification, showing the embodiments in line with this application, and are used together with the specification to explain the principles of this application.

[0031] In order to more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, for those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0032] Figure 1 It is one of the schematic structural diagrams of the rear outrigger described in the embodiments of this application;

[0033] Figure 2 It is the second schematic structural diagram of the rear outrigger described in the embodiments of this application;

[0034] Figure 3 It is a partial front view of the bridge erecting machine described in the embodiments of this application;

[0035] Figure 4 It is a side view of the bridge erecting machine described in the embodiments of this application;

[0036] Figure 5 It is a side view of the rear outrigger in the flipping position described in the embodiments of this application;

[0037] Figure 6 It is a cross-sectional view of the traveling wheel set described in the disclosed embodiments.

[0038] Among them, 1. Frame body; 11. Upper cross beam; 12. Lower beam assembly; 121. Lower cross beam; 122. Guide post; 123. Moving beam; 124. Lifting driving member; 13. Guide sleeve; 14. Limiting portion; 151. First hinge seat; 152. Second hinge seat; 16. Auxiliary block; 2. Rotating driving member; 3. Transverse driving member; 4. Transverse movable portion; 41. Traveling beam; 42. Wheel body assembly; 421. Wheel body; 422. Fixed arm; 423. Connecting arm; 424. Telescopic arm; 43. Steering structure; 44. Synchronizing rod; 451. First positioning member; 452. Second positioning member; 46. Auxiliary positioning member; 47. First mounting portion; 48. Second mounting portion; 51. Support rod; 52. Movable sleeve; 53. First through hole; 54. Second through hole; 6. Main beam. Detailed implementation manners

[0039] In order to more clearly understand the above-mentioned objects, features and advantages of the present application, the solutions of the present application will be further described below. It should be noted that, without conflict, the embodiments of the present application and the features in the embodiments may be combined with each other.

[0040] In the following description, many specific details are set forth in order to fully understand the present application, but the present application may also be implemented in other ways different from those described herein; obviously, the embodiments in the specification are only a part of the embodiments of the present application, rather than all the embodiments.

[0041] Referring to Figures 1 to 6 As shown, an embodiment of the present application provides a rear leg for being installed on the main beam 6 of a bridge erecting machine, including a frame body 1, a transverse driving member 3 and a transverse movable portion 4; one end of the frame body 1 is connected to the main beam 6 of the bridge erecting machine, and the transverse movable portion 4 is slidably connected to the other end of the frame body 1; the transverse driving member 3 is connected between the frame body 1 and the transverse movable portion 4 to drive the frame body 1 to move transversely along the main beam 6 relative to the transverse movable portion 4.

[0042] Specifically, when erecting a bridge, there are multiple piers arranged at intervals, and the beam slabs are erected on two adjacent piers to form a bridge structure. The multiple beam slabs are successively erected on two adjacent piers and connected to each other to finally complete the overall erection of the bridge. The arrangement direction of the multiple beam slabs during erection is the erection direction; the bridge structure formed by one beam slab at the edge in the erection direction is the bridge head, and the surface of one beam slab at the edge in the erection direction is the bridge deck. When erecting a bridge in front of the bridge head, it is necessary to erect the bridge erecting machine between the bridge head and the pier in front of the bridge head, so that the beam slab is transported to between the two piers through the main beam 6 to complete the installation operation of the beam slab.

[0043] When the bridge is a curved bridge, the main beam 6 is on the center line of the bridge deck at the bridge head, and the bridge erection machine moves along the center line of the bridge deck so that the main beam extends beyond the edge of the bridge head. Since the bridge piers are arranged at intervals along the curve, there will be a position offset between the front end of the main beam extending beyond the edge of the bridge head and the pier in front of the bridge head, making it difficult for the outrigger at the front end of the main beam to support at the center of the pier in front of the bridge head, and there will be an offset between the main beam 6 of the erected bridge erection machine and the center line of the bridge to be erected. When the subsequent beam slabs are transported and installed through the main beam 6, there will be a problem of position offset. The rear outrigger provided in this application drives the frame body 1 to slide relative to the lateral moving part 4 along the transverse direction of the main beam 6 through the transverse driving part 3, so as to adjust the relative position between the rear end and the front end of the main beam 6 provided with the rear outrigger, thereby adjusting the orientation of the main beam 6 to correct the deviation between the main beam 6 and the center line of the bridge to be erected.

[0044] The above-mentioned main beam 6 is usually parallel to the ground or the bridge deck during use. The extending direction of the main beam 6 is the longitudinal direction of the main beam 6. The direction perpendicular to the extension of the main beam 6 in the horizontal direction is the transverse direction of the main beam 6. The front outrigger is arranged at the front end of the main beam 6, and the rear outrigger formed by the frame body 1 is arranged at the rear end, so that the front outrigger and the rear outrigger support the main beam 6 on the ground or the pier.

[0045] The above-mentioned transverse driving part 3 can be selected as a hydraulically driven oil cylinder. The oil cylinder has a telescopic end, and the telescopic end can extend and retract along one direction in the oil cylinder under the hydraulic drive; the oil cylinder can be selected to be connected to the frame body 1, the telescopic end is arranged along the transverse direction of the main beam 6 and connected to the lateral moving part 4. When the oil cylinder drives the telescopic end to move, the frame body 1 and the lateral moving part 4 slide relative to each other; of course, the oil cylinder can also be selected to be connected to the lateral moving part 4, the telescopic end is arranged along the transverse direction of the main beam 6 and connected to the frame body 1, as long as it satisfies that when the oil cylinder drives the telescopic end to move, the frame body 1 can slide relative to the lateral moving part 4; the frame body 1 is supported on the lower side of the main beam 6, the lateral moving part 4 is supported on the lower side of the frame body 1. When the lateral moving part 4 is supported on the ground or the bridge deck, the transverse driving part 3 drives the frame body 1 to slide relative to the lateral moving part 4, so as to adjust the position of the main beam 6 in the transverse direction of the main beam 6.

[0046] For the above-mentioned horizontal driving member 3, the oil cylinder and the telescopic end can be arranged along the transverse direction of the main beam 6. It can be selected that the oil cylinder is connected to the transverse moving part 4 and the telescopic end is connected to the frame body 1, so that when the telescopic end extends and retracts under the drive of the oil cylinder, it can push the frame body 1 to slide relative to the transverse moving part 4 along the transverse direction of the main beam 6. Of course, it can also be selected that the oil cylinder is connected to the frame body 1 and the telescopic end is connected to the transverse moving part 4; when the frame body 1 is perpendicular to the main beam 6, the transverse moving part 4 is supported on the ground, and the horizontal driving member 3 drives the frame body 1 to slide relative to the transverse moving part 4 along the transverse direction of the main beam 6, so that the frame body 1 drives the rear end of the main beam 6 to move transversely, adjusting the position of the main beam 6 in the transverse direction, and the orientation of the main beam 6 can be set in the direction required by the subsequent bridge structure.

[0047] On the side of the above-mentioned transverse moving part 4 away from the frame body 1, it can be selected to be provided with moving wheels, so that when the transverse moving part 4 is supported on the ground, the moving wheels rotate and the transverse moving part 4 can move on the ground, so that the bridge erecting machine can move on the ground.

[0048] When the above-mentioned frame body 1 is at the center of the transverse moving part 4, the frame body 1 is in the reference position. The maximum distance that the frame body 1 can move relative to the reference position in one direction in the transverse direction of the main beam 6 is 800 mm. The frame body 1 can move relative to the reference position in two opposite directions in the transverse direction of the main beam 6, that is, the maximum distance that the frame body 1 can move relative to the transverse moving part 4 in the transverse direction of the main beam 6 is 1600 mm.

[0049] When the rear outrigger provided in the embodiment of the present application is specifically used, when the bridge erecting machine erects a curved bridge, the bridge erecting machine needs to be placed on the center line of the bridge deck at the bridge head, and the longitudinal direction of the main beam 6 is arranged along the center line of the bridge deck at the bridge head. After the bridge erecting machine moves along the center line of the bridge deck at the bridge head and extends out of the bridge head, there is an included angle between the longitudinal direction of the main beam 6 of the bridge erecting machine and the center line of the bridge to be erected, that is, the main beam 6 will be offset. At this time, the frame body 1 supports the main beam 6 at the working position, and the horizontal driving member 3 is started to drive the frame body 1 to slide relative to the transverse moving part 4 along the transverse direction of the main beam 6, so as to adjust the relative position between the rear end and the front end of the main beam 6 provided with the rear outrigger, so as to adjust the orientation of the main beam 6, so that the longitudinal direction of the main beam 6 is consistent with the extension direction of the center line of the bridge to be erected, so that the main beam 6 can coincide with the center line of the bridge to be erected, and the beam slabs are assembled through the bridge erecting machine to form the required bridge structure.

[0050] After the bridge erecting machine completes the erection, the rotating driving member 2 is rotated to drive the frame body 1 to rotate relative to the main beam 6, so that the frame body 1 rotates from the working position to the flipping position. The lateral driving member 3 drives the lateral moving part 4 to slide relative to the frame body 1, so that the lateral moving part 4 returns to the initial position. The vehicle for transporting the beam slab enters the middle position of the main beam 6 from the lower side of the frame body 1 at the flipping position, so that the beam slab can be connected to the trailer at the middle position of the main beam 6, so that the main beam 6 can assemble multiple beam slabs to form a bridge structure.

[0051] The rear leg provided by the embodiment of the present application includes a frame body 1, a lateral driving member 3 and a lateral moving part 4; one end of the frame body 1 is connected to the main beam 6 of the bridge erecting machine, and the lateral moving part 4 is slidably connected to the other end of the frame body 1; the lateral driving member 3 is connected between the frame body 1 and the lateral moving part 4 to drive the frame body 1 to move laterally along the main beam 6 relative to the lateral moving part 4. The lateral moving part 4 and the frame body 1 support the main beam 6 on the bridge deck at the bridge head. When the orientation of the main beam 6 is offset, the lateral driving member 3 drives the frame body 1 to move laterally on the main beam 6 relative to the lateral moving part 4, so as to drive the end of the main beam 6 provided with the rear leg and the end of the main beam 6 away from the rear leg to move relative to each other, thereby adjusting the orientation of the main beam 6 so that the main beam 6 can be arranged along the center line of the bridge to be erected. The lateral movement function of the rear leg is realized through the mutual cooperation of the frame body 1, the lateral moving part 4 and the lateral driving member 3. There is no need to set a sliding structure between the frame body 1 and the main beam 6, which simplifies the installation structure between the rear leg and the main beam 6 and improves the convenience of the installation and disassembly operations of the rear leg and the main beam 6.

[0052] Referring to Figures 1 to 5 As shown in the figure, in some embodiments, one end of the frame body 1 is rotatably connected to the main beam 6, and a rotating driving member 2 is rotatably connected to the frame body 1. The rotating driving member 2 is rotatably connected to the main beam 6, so that the rotating driving member 2 drives the frame body 1 to switch between the working position and the flipping position; the working position is the position perpendicular to the main beam 6, and the flipping position is the position attached to one side of the main beam 6.

[0053] With such a setting, when the bridge erecting machine moves and erects, the frame body 1 is in the working position to support the main beam 6. After the bridge erecting machine is erected, the frame body 1 rotates to the flipping position, so that when the transport vehicle transfers the bridge erecting machine and transports the beam slab, the transport vehicle can move to the space below the frame body 1 at the flipping position and then move to the space below the main beam 6; a transverse movable part 4 is arranged at one end of the frame body 1 far away from the main beam 6, and a transverse driving part 3 is connected between the frame body 1 and the transverse movable part 4 to drive the relative movement between the transverse movable part 4 and the frame body 1. The relative sliding between the frame body 1 and the transverse movable part 4 in the working position can adjust the orientation of the main beam 6, so that the main beam 6 can be arranged in the direction required by the subsequent bridge structure, ensuring the smooth installation of the subsequent bridge structure; by rotatably connecting the frame body 1 to the main beam 6 and the mutual cooperation between the frame body 1 and the transverse movable part 4, the rear outrigger can adjust the orientation of the main beam 6 under the drive of the rotation driving part 2 and the transverse driving part 3, and can also flip and fit on the main beam 6 to avoid the transport vehicle, improving the use experience of the bridge erecting machine during construction.

[0054] Specifically, the frame body 1 can be selected as a rectangular frame structure. One end of the frame body 1 can be rotatably connected to the main beam 6 by means of hinge. Of course, it can also be selected that one end of the frame body 1 is provided with a block structure, and a block structure is provided on the main beam 6. The block structure on the main beam 6 and the block structure on the frame body 1 are rotatably connected by a pin shaft or a rotating shaft.

[0055] The frame body 1 can be selected to be connected to the side surface of the main beam 6 facing the ground. The rotation axis of the frame body 1 relative to the main beam 6 can be selected to be in the same transverse direction as the main beam 6. Thus, when the frame body 1 is perpendicular to the main beam 6, the frame body 1 can support the main beam 6. The frame body 1 rotates along the longitudinal direction of the main beam 6 to a position consistent with the longitudinal direction of the main beam 6, so that the frame body 1 fits on the side of the main beam 6 facing the ground. At this time, the frame body 1 is in the flipping position, and the vehicle transporting the beam slab can enter the position between the front outrigger and the rear outrigger through the space below the frame body 1 in the flipping position to load the beam slab on the trailer in the middle of the main beam 6.

[0056] The above rotation driving parts 2 can be selected as hydraulic cylinders. The hydraulic cylinders have telescopic ends, and the telescopic ends can extend and retract in one direction under the hydraulic drive in the hydraulic cylinders; it can be selected that the hydraulic cylinders of the rotation driving parts 2 are rotatably connected to the main beam 6 by means of hinge or bolt connection, and the telescopic ends are connected to the frame body 1 by means of hinge or bolt connection. The telescopic ends are arranged along the longitudinal direction of the main beam 6, so that when the telescopic ends extend and retract relative to the hydraulic cylinders, they push the frame body 1 to rotate between the working position and the flipping position; of course, it can also be selected that the hydraulic cylinders of the rotation driving parts 2 are rotatably connected to the frame body 1 by means of hinge or bolt connection, and the telescopic ends are connected to the main beam 6 by means of hinge or bolt connection. The telescopic ends are arranged along the longitudinal direction of the main beam 6.

[0057] Referring to Figure 1 and Figure 3 As shown, in some embodiments, the frame body 1 is provided with a first hinge seat 151 and a second hinge seat 152. The first hinge seat 151 is connected to the frame body 1, the second hinge seat 152 is connected to the main beam 6, and the first hinge seat 151 and the second hinge seat 152 are rotatably connected by a rotating shaft arranged transversely along the main beam 6. With such an arrangement, the first hinge seat 151 and the second hinge seat 152 serve as the connection structure between the frame body 1 and the main beam 6, spacing the frame body 1 from the main beam 6. When the frame body 1 rotates towards the direction close to the main beam 6, it prevents the edge of the frame body 1 from abutting against the main beam 6 and hindering the rotation of the frame body 1, ensuring the smooth rotation of the frame body 1.

[0058] Specifically, the first hinge seat 151 and the second hinge seat 152 can both be selected as block structures. The first hinge seat 151 can be welded to the frame body 1, and the second hinge seat 152 can be welded to the main beam 6. Of course, the first hinge seat 151 and the frame body 1 can also be an integral structure, and the second hinge seat 152 and the main beam 6 can be an integral structure.

[0059] A through hole can be selectively provided on the above-mentioned first hinge seat 151 along the transverse direction of the main beam 6, and a through hole can be selectively provided on the second hinge seat 152 along the transverse direction of the main beam 6. The through holes on the first hinge seat 151 and the second hinge seat 152 are coaxially arranged. Bolts or cylindrical shafts can be selectively used to pass through the through holes on the first hinge seat 151 and the second hinge seat 152, so that the first hinge seat 151 and the second hinge seat 152 are rotatably connected.

[0060] Referring to Figure 1 and Figure 3 As shown, in some embodiments, an L-shaped auxiliary block 16 is provided on one side of the frame body 1 along the longitudinal direction of the main beam 6, and the auxiliary block 16 extends towards the main beam 6; the rotation driving member 2 includes a telescopic oil cylinder, the telescopic oil cylinder is rotatably connected to the main beam 6, and the telescopic end of the telescopic oil cylinder is rotatably connected to one end of the auxiliary block 16 away from the frame body 1. With such an arrangement, the telescopic oil cylinder has good stability and can continuously output a stable acting force, which is beneficial to the uniform rotation of the frame body 1; the frame body 1 rotates around the rotation connection point between the frame body 1 and the main beam 6, and the telescopic end applies an acting force to one end of the L-shaped auxiliary block 16 away from the frame body 1, increasing the distance between the acting force on the auxiliary block 16 and the rotation connection point, making the acting force on the auxiliary block 16 have a longer force arm for the rotation of the frame body 1, and improving the effect of the rotation driving member 2 driving the frame body 1 to rotate.

[0061] Specifically, the front end and the rear end of the main beam 6 arranged along its longitudinal direction can be selected. The frame body 1 is arranged at the rear end of the main beam 6. The L-shaped auxiliary block 16 can be selected to be arranged on one side surface of the frame body 1 along the longitudinal direction of the main beam 6. When the frame body 1 is arranged at the rear end of the main beam 6, the auxiliary block 16 is arranged on the side surface of the frame body 1 far from the front end of the main beam 6.

[0062] When the above-mentioned frame body 1 is in the working position, one end of the L-shaped auxiliary block 16 is connected to the frame body 1, and the other end extends towards the main beam 6 in a direction perpendicular to the main beam 6; the telescopic oil cylinder has a telescopic end, and the telescopic end can extend and retract relative to the telescopic oil cylinder under the drive of hydraulic pressure. The telescopic oil cylinder is rotatably connected to the main beam 6. It can be selected that the telescopic end can extend and retract in the longitudinal direction of the main beam 6. The telescopic end is connected to the end of the auxiliary block 16 far from the frame body 1 by means of hinge or bolt connection, so that the acting force of the telescopic end can be applied to the frame body 1 through the auxiliary block 16.

[0063] The above-mentioned auxiliary block 16 can be selected to extend to the side edge of the frame body 1 facing the main beam 6, so that when the frame body 1 is in the working position, the end of the auxiliary block 16 far from the frame body 1 is arranged opposite to the telescopic oil cylinder in the longitudinal direction of the main beam 6, that is, when the frame body 1 is in the working position, the telescopic oil cylinder is arranged along the longitudinal direction of the main beam 6.

[0064] Referring to Figure 1 、 Figure 3 and Figure 5 As shown, in some embodiments, a support rod 51 is rotatably arranged on the frame body 1. The support rod 51 extends along the longitudinal direction of the main beam 6. A movable sleeve 52 is rotatably arranged on the main beam 6. The end of the support rod 51 far from the frame body 1 is movably inserted into the movable sleeve 52; a first through hole 53 and a second through hole 54 are provided on the support rod 51, and a positioning and mounting member is detachably connected to the movable sleeve 52; when the frame body 1 is in the working position, the first through hole 53 is inserted and connected with the positioning and mounting member. When the frame body 1 is in the flipping position, the second through hole 54 is inserted and connected with the positioning and mounting member. With such a setting, when the frame body 1 is in the working position, the support rod 51, the frame body 1 and the main beam 6 form a triangular structure, improving the stability of the frame body 1 in the working position. When the frame body 1 needs to be rotated to the flipping position, the positioning and mounting member is disengaged from the first through hole 53, so that the support rod 51 rotates with the frame body 1. When the frame body 1 is in the flipping position, the positioning and mounting member is connected to the second through hole 54, so that the support rod 51 restricts the frame body 1 from rotating towards the working position, thereby keeping the frame body 1 stable in the flipping position.

[0065] Specifically, one end of the support rod 51 can be rotatably connected to the frame body 1 by means of hinging or bolt connection, and the other end is inserted into the movable sleeve 52. There is a gap between the support rod 51 and the inner wall of the movable sleeve 52, so that the support rod 51 can move in the movable sleeve 52. The movable sleeve 52 can be selected as a hollow sleeve. The outside of the movable sleeve 52 is rotatably connected to the main beam 6. The opening at the end of the movable sleeve 52 faces the frame body 1 in the longitudinal direction of the main beam 6, so that the support rod 51 can be movably inserted into the movable sleeve 52.

[0066] Two through holes can be selected to be provided on the above-mentioned support rod 51 as the first through hole 53 and the second through hole 54. It can be selected that the movable sleeve 52 is provided with a through hole, and a positioning pin or a bolt is provided in the through hole as a positioning and mounting member. When the frame body 1 is in the working position, the first through hole 53 on the support rod 51 is coaxial with the through hole of the movable sleeve 52. A positioning pin or a bolt is used to pass through the first through hole 53 and the through hole, so that the positioning and mounting member is detachably connected to the first through hole 53; when the frame body 1 rotates from the working position to the flipping position, the positioning and mounting member is separated from the first through hole 53, and the support rod 51 slides in the movable sleeve 52 as the frame body 1 rotates. When the frame body 1 rotates to the flipping position, the second through hole 54 is coaxial with the through hole of the movable sleeve 52, so that the positioning pin or the bolt can be inserted into the second through hole 54.

[0067] When the above-mentioned support rod 51 is arranged on one side of the frame body 1 along the direction from the working position to the flipping position, the first through hole 53 is arranged at one end of the support rod 51 away from the frame body 1, and the second through hole 54 is arranged in the middle area of the support rod 51. When the frame body 1 is in the working position, the end of the support rod 51 away from the frame body 1 is in the movable sleeve 52. When the frame body 1 is in the flipping position, the middle area of the support rod 51 is in the movable sleeve 52; of course, it can also be selected that the support rod 51 is arranged on one side of the frame body 1 along the direction from the flipping position to the working position. At this time, the first through hole 53 is arranged in the middle area of the support rod 51, and the second through hole 54 is arranged at one end of the support rod 51 away from the frame body 1. When the frame body 1 is in the working position, the middle area of the support rod 51 is in the movable sleeve 52. When the frame body 1 is in the flipping position, the end of the support rod 51 away from the frame body 1 is in the movable sleeve 52.

[0068] Referring to Figure 1 and Figure 2 As shown, in some embodiments, the number of the support rods 51 is two. The two support rods 51 are arranged on both sides of the frame body 1 along the transverse direction of the main beam 6. Two movable sleeves 52 are respectively rotatably arranged on the main beam 6. The two support rods 51 are movably inserted into the two movable sleeves 52 in one-to-one correspondence. With such an arrangement, the two support rods 51 can share the pressure borne by the frame body 1, so that when the frame body 1 is in the working position and the flipping position, the two support rods 51 can both improve the position stability of the frame body 1.

[0069] Specifically, the movable sleeves 52 can be arranged on both sides of the main beam 6 along the transverse direction of the main beam 6. Of course, the movable sleeves 52 can also be arranged on one side of the main beam 6 facing the frame body 1; the two support rods 51 are respectively inserted and connected to the movable sleeves 52 in a one-to-one correspondence, so that the support rods 51 can move relative to the movable sleeves 52 when the frame body 1 rotates. When the frame body 1 is in the first position, the first through holes 53 of the two support rods 51 are respectively inserted and connected to the positioning and mounting parts on the two movable sleeves 52. When the frame body 1 is in the flipping position, the second through holes 54 of the two support rods 51 are respectively inserted and connected to the positioning and mounting parts on the two movable sleeves 52.

[0070] Referring to Figure 1 and Figure 2 As shown, in some embodiments, the frame body 1 includes an upper cross beam 11, a lower beam assembly 12 and a lifting driving member 124. The upper cross beam 11 is movably connected to the lower beam assembly 12; the lifting driving member 124 is connected between the upper cross beam 11 and the lower beam assembly 12 to drive the lower beam assembly 12 to approach or move away from the upper cross beam 11; the upper cross beam 11 is rotatably connected to the main beam 6, the rotation driving member 2 is connected to the upper cross beam 11, and the transverse movable part 4 is slidably connected to the side of the lower beam assembly 12 facing away from the upper cross beam 11. With such a setting, the upper cross beam 11 is rotatably connected to the main beam 6, that is, the upper cross beam 11 is relatively close to the main beam 6. The rotation driving member 2 is connected to the upper cross beam 11, and the telescopic end of the rotation driving member 2 can move a relatively small distance to drive the frame body 1 to rotate; the lifting driving member 124 drives the lower beam assembly 12 to move in a direction away from or close to the upper cross beam 11. When the distance between the upper cross beam 11 and the lower beam assembly 12 is shortened, the lower beam assembly 12 can drive the transverse movable part 4 to be separated from the ground, facilitating the frame body 1 to rotate to the flipping position; when the frame body 1 is in the working position, the upper cross beam 11 and the lower beam assembly 12 move in a direction away from each other, which can ensure that the transverse movable part 4 fully abuts against the ground, so that the transverse movable part 4 and the frame body 1 can stably support the main beam 6.

[0071] Specifically, the lower beam assembly 12 can be selected as a frame or a block structure. The lower beam assembly 12 has a columnar structure extending towards the upper cross beam 11. A through hole can be selected to be provided on the upper cross beam 11, so that the columnar structure is movably inserted into the through hole, thereby movably connecting the upper cross beam 11 and the lower beam assembly 12. Of course, it can also be selected that a movable groove is recessed on one side of the lower beam assembly 12 facing the upper cross beam 11, and a column is provided on one side of the upper cross beam 11 facing the lower beam assembly 12. The column is movably inserted into the movable groove, thereby movably connecting the upper cross beam 11 and the lower beam assembly 12.

[0072] The upper crossbeam 11 described above is rotatably connected to the main beam 6, that is, the upper crossbeam 11 is relatively close to the main beam 6. The rotation driving member 2 is connected to the upper crossbeam 11, and the telescopic end of the rotation driving member 2 can move a relatively small distance to drive the rotation of the frame body 1.

[0073] The lifting driving member 124 described above can be selected as a telescopic oil cylinder. The telescopic oil cylinder is arranged along the upper crossbeam 11 in the direction towards the lower beam assembly 12, so that the end of the telescopic oil cylinder moves in the direction of the upper crossbeam 11 towards the lower beam assembly 12. There are also other legs provided on the main beam 6 of the bridge erecting machine, and the upper crossbeam 11 is connected to the main beam 6. Thus, after the telescopic oil cylinder is activated, it can drive the lower beam assembly 12 to move in the direction away from or close to the upper crossbeam 11. When the frame body 1 is in the working position, the upper crossbeam 11 and the lower beam assembly 12 move in the direction away from each other, so that the transverse movable part 4 connected to the lower beam assembly 12 is fully in contact with the ground. When the frame body 1 needs to rotate to the flipping position, the lifting driving member 124 drives the lower beam assembly 12 to drive the transverse movable part 4 to move in the direction close to the upper crossbeam 11, facilitating the rotation of the frame body 1 relative to the main beam 6.

[0074] Refer to Figure 1 and Figure 2 As shown in the figure, in some embodiments, the lower beam assembly 12 includes a lower crossbeam 121, a moving beam 123 and two guide columns 122. The lower crossbeam 121 is arranged opposite to the upper crossbeam 11. The two guide columns 122 are connected to one side of the lower crossbeam 121 facing the upper crossbeam 11. Guide sleeves 13 are arranged at both ends of the upper crossbeam 11, and the two guide columns 122 are movably inserted into the two guide sleeves 13 in a one-to-one correspondence. The moving beam 123 is arranged between the upper crossbeam 11 and the lower crossbeam 121 and is detachably connected to the guide columns 122. The lifting driving member 124 is connected between the moving beam 123 and the upper crossbeam 11.

[0075] With such an arrangement, the two guide columns 122 are movably connected to the two guide sleeves 13 in a one-to-one correspondence, which has a guiding effect on the movement of the upper crossbeam 11 relative to the moving beam 123, increasing the stability of the movement of the upper crossbeam 11. The moving beam 123 is arranged between the upper crossbeam 11 and the lower crossbeam 121, reducing the size of the lifting driving member 124 and facilitating the lifting driving member 124 to drive the relative movement of the upper crossbeam 11 and the lower crossbeam 121. The moving beam 123 is detachably connected to the guide columns 122, which is convenient for adjusting the position of the moving beam 123 between the upper crossbeam 11 and the lower crossbeam 121 to adapt to different working conditions. The upper crossbeam 11 is connected to the frame body 1, so that the lifting driving member 124 drives the moving beam 123 to drive the guide columns 122 to move up and down, and further enables the lower crossbeam 121 and the transverse movable part 4 connected to the guide columns 122 to lift.

[0076] Specifically, the guide sleeve 13 can be selected as a hollow cylindrical structure, so that the space inside the guide sleeve 13 forms a through hole for the upper cross beam 11 to movably connect with the guide post 122; guide sleeves 13 are respectively arranged at both ends of the upper cross beam 11, the two guide posts 122 are parallel to each other, and the two guide posts 122 are respectively inserted into the two guide sleeves 13, so that the guide post 122 can slide relative to the guide sleeve 13, so that the lower cross beam 121 can approach and move away from the upper cross beam 11.

[0077] The above-mentioned moving beam 123 can be selected to be parallel to the upper cross beam 11. Bolts can be selected to detachably connect the two ends of the moving beam 123 to the two guide posts 122 respectively. Of course, it can also be selected that the guide posts 122 are provided with mounting holes, driving cylinders are arranged at both ends of the moving beam 123, the driving cylinders are provided with pins, and the pins can move in the direction close to and away from the guide posts 122 under the drive of the driving cylinders, and the pins are inserted and connected with the positioning holes of the guide posts 122, so that the two ends of the moving beam 123 are detachably connected to the two guide posts 122.

[0078] Refer to Figure 1 、 Figure 2 and Figure 3 As shown in

[0079] In some embodiments, a limiting portion 14 is provided on each guide sleeve 13, and a plurality of positioning holes are arranged on the guide post 122 at intervals along the direction from the upper cross beam 11 to the lower cross beam 121, and the limiting portion 14 can be inserted and connected with any positioning hole. With such a setting, the limiting portion 14 is inserted and connected with the positioning hole, so that the relative position between the guide sleeve 13 and the guide post 122 is kept stable, thereby restricting the movement of the upper cross beam 11 on the guide post 122. By inserting the limiting portion 14 into the positioning holes at different positions, the upper cross beam 11 can be restricted at different positions on the guide post 122.

[0080] Specifically, it can be selected that the guide sleeve 13 is provided with a threaded hole, a bolt is threadedly connected to the bolt, and the bolt serves as the limiting portion 14. A plurality of through holes are provided on the guide post 122 as positioning holes. By rotating the bolt to insert the bolt into a positioning hole on the guide post 122, the relative position between the guide sleeve 13 and the guide post 122 can be kept stable, thereby restricting the movement of the upper cross beam 11 on the guide post 122. By inserting the bolt into the positioning holes at different positions, the upper cross beam 11 can be restricted at different positions on the guide post 122.

[0081] Refer to Figure 1 and Figure 2As shown, in some embodiments, a first positioning member 451 is provided on the frame body 1, and a second positioning member 452 is provided on the lateral moving part 4. When the frame body 1 switches between the working position and the flipping position, the first positioning member 451 and the second positioning member 452 are connected to each other through a connecting member. When the frame body 1 moves laterally along the main beam 6 relative to the lateral moving part 4, the connecting member is separated from the first positioning member 451 and the second positioning member 452. With such a setting, the first positioning member 451 and the second positioning member 452 are connected to each other through the connecting member, which can limit the relative movement between the lateral moving part 4 and the frame body 1 in the lateral direction of the main beam 6, improve the structural stability of the rear leg, and prevent relative movement between the lateral moving part 4 and the frame body 1 when the frame body 1 rotates relative to the main beam 6; when relative movement between the lateral moving part 4 and the frame body 1 is required, the connecting member is separated from the first positioning member 451 and the second positioning member 452, enabling relative movement between the frame body 1 and the lateral moving part 4.

[0082] Specifically, the first positioning member 451 can be selected as a convex block provided on the lower cross beam 121 of the frame body 1, the second positioning member 452 can be selected as a convex block provided on the lateral moving part 4, the connecting member can be selected as a bolt or a pin. It can be selected that through holes are provided on both the first positioning member 451 and the second positioning member 452 along the direction from the frame body 1 towards the lateral moving part 4. When the first positioning member 451 and the second positioning member 452 are opposite to each other in the direction from the frame body 1 towards the lateral moving part 4, a bolt is used as the connecting member to pass through the through holes on the first positioning member 451 and the second positioning member 452, and nuts are connected to both ends of the bolt to connect the first positioning member 451 and the second positioning member 452 to each other. Alternatively, the first positioning member 451 can be selected as a block provided on the frame body 1, the second positioning member 452 can be a block protruding on the lateral moving part 4, and the connecting member is a hook, and both ends of the hook are respectively hooked to the block on the frame body 1 and the block on the lateral moving part 4 to detachably connect the first positioning member 451 and the second positioning member 452.

[0083] When the above-mentioned first positioning member 451 and the second positioning member 452 are connected to each other through the connecting member, the relative movement between the lateral moving part 4 and the frame body 1 in the lateral direction of the main beam 6 is restricted. When the frame body 1 needs to rotate towards the flipping position, the first positioning member 451 and the second positioning member 452 are connected to each other through the connecting member to prevent relative movement between the lateral moving part 4 and the frame body 1 when the frame body 1 rotates.

[0084] That is, when the rear outrigger rotates between the flipping position and the working position, the first positioning member 451 is detachably connected to the second positioning member 452, preventing relative movement between the transverse moving part 4 and the frame body 1 when the rear outrigger rotates. When the rear outrigger is in the working position and the position between the main beam 6 and the bridge deck or the ground needs to be adjusted, the connecting member is disconnected from the first positioning member 451, the connecting member is disconnected from the second positioning member 452, and the first positioning member 451 and the second positioning member 452 are separated from each other, so that the transverse moving part 4 can move relative to the frame body 1 in the transverse direction of the main beam 6.

[0085] The number of the above-mentioned first positioning members 451 can be selected as multiple, the number of the second positioning members 452 can be selected as multiple, and the number of the first positioning members 451 is equal to the number of the second positioning members 452. The multiple first positioning members 451 are arranged at intervals in the transverse direction of the main beam 6 on the frame body 1, the multiple second positioning members 452 are arranged at intervals in the transverse direction of the main beam 6 on the transverse moving part 4, the multiple first positioning members 451 and the multiple second positioning members 452 are arranged opposite to each other in one-to-one correspondence, and the multiple first positioning members 451 are detachably connected to the multiple second positioning members 452 through bolts in one-to-one correspondence.

[0086] Refer to Figure 2 As shown, in some embodiments, an auxiliary positioning member 46 is provided on the frame body 1. A positioning pin is movably arranged on the auxiliary positioning member 46. When the frame body 1 switches between the working position and the flipping position, the positioning pin is connected to the transverse moving part 4. When the frame body 1 moves relative to the transverse moving part 4 in the transverse direction of the main beam 6, the positioning pin is separated from the transverse moving part 4. With such a setting, the auxiliary positioning member 46 is connected to the transverse moving part 4, restricting the relative movement between the transverse moving part 4 and the frame body 1, thereby improving the stability of the relative position between the transverse moving part 4 and the frame body 1 and preventing the transverse moving part 4 and the frame body 1 from shaking when the frame body 1 switches between the working position and the flipping position.

[0087] Specifically, the auxiliary positioning member 46 is arranged at a position on the frame body 1 close to the transverse moving part 4. It can be selected that the auxiliary positioning member 46 is arranged on the lower cross beam 121, the auxiliary positioning member 46 can be selected to extend in the direction towards the transverse moving part 4, the auxiliary positioning member 46 is arranged on one side of the frame body 1 along the longitudinal direction of the main beam 6, a through hole is provided on the auxiliary positioning member 46, and the positioning pin passes through the through hole on the auxiliary positioning member 46 and is detachably connected to the transverse moving part 4; it can be selected that a buckle is provided on the transverse moving part 4, and the buckle is snap-connected to the positioning pin. Of course, it can also be selected that a threaded hole is provided on the transverse moving part 4, and a thread is provided at the end of the positioning pin, so that the positioning pin is threadedly connected to the threaded hole on the transverse moving part 4 after passing through the auxiliary positioning member 46.

[0088] On the above-mentioned frame body 1, two auxiliary positioning members 46 can be selectively provided. The two auxiliary positioning members 46 are arranged at both ends of the frame body 1 along the transverse direction of the main beam 6, and the two auxiliary positioning members 46 are detachably connected to the transverse movable part 4 through two positioning pins.

[0089] When the rear leg rotates between the flipping position and the working position, the auxiliary positioning member 46 is detachably connected to the transverse movable part 4, so that the relative movement between the transverse movable part 4 and the frame body 1 is restricted. That is, when the rear leg rotates between the flipping position and the working position, the auxiliary positioning member 46 is connected to the transverse movable part 4 to improve the overall structural stability of the rear leg. When the rear leg is in the working position and the position between the main beam 6 and the bridge deck or the ground needs to be adjusted, the auxiliary positioning member 46 is separated from the transverse movable part 4, so that the transverse movable part 4 can move relative to the frame body 1 in the transverse direction of the main beam 6.

[0090] On the above-mentioned frame body 1, an auxiliary positioning member 46 and a first positioning member 451 can be selectively provided at the same time. At this time, a second positioning member 452 is provided on the transverse movable part 4. In the transverse direction of the main beam 6, the auxiliary positioning member 46 is arranged at intervals with the first positioning member 451 and the second positioning member 452.

[0091] When the rear leg rotates between the flipping position and the working position, the auxiliary positioning member 46 is connected to the transverse movable part 4 through a positioning pin, and the first positioning member 451 and the second positioning member 452 are connected to each other through a connecting member, so as to improve the structural stability of the rear leg. And the connection between the auxiliary positioning member 46 and the transverse movable part 4 can share the acting force received by the first positioning member 451 and the second positioning member 452; when the rear leg is supported on the bridge deck or the ground in the working position and the frame body 1 needs to move relative to the transverse movable part 4 to adjust the position between the main beam 6 and the bridge deck or the ground, the auxiliary positioning member 46 is separated from the transverse movable part 4, and the first positioning member 451 and the second positioning member 452 are separated from each other, so that the transverse movable part 4 can move relative to the frame body 1 in the transverse direction of the main beam 6.

[0092] Refer to Figure 1 、 Figure 2 、 Figure 3 and Figure 4 As shown in, in some embodiments, the transverse movable part 4 includes a traveling beam 41 and a traveling wheel set installed on the traveling beam 41; the traveling beam 41 is slidably connected to the frame body 1, the traveling wheel set is arranged on the side of the traveling beam 41 facing away from the frame body 1, and the transverse driving member 3 is connected between the traveling beam 41 and the frame body 1. With such a setting, when the frame body 1 is in the working position, the traveling beam 41 is supported on the ground through the traveling wheel set, and the frame body 1 slides relative to the traveling beam 41, so that the position of the main beam 6 can be adjusted; the traveling wheel set can enable the frame body 1 to move on the ground when the bridge erecting machine is formed, so as to ensure that the bridge erecting machine can travel smoothly.

[0093] Specifically, the traveling beam 41 is a rectangular beam arranged transversely along the main beam 6. The traveling beam 41 can be selectively connected to the frame body 1 through rails in a sliding manner. Of course, it can also be selectively arranged that a sliding groove extending transversely along the main beam 6 is provided on the side of the frame body 1 away from the main beam 6, and the notch of the sliding groove faces away from the main beam 6, so that the traveling beam 41 is slidably connected to the sliding groove.

[0094] The traveling wheel set can be selectively composed of multiple wheel bodies, and each wheel body can rotate longitudinally along the main beam 6. When the bridge erecting machine travels, the traveling wheel set supports on the ground, and the wheel bodies of the traveling wheel set roll so that the frame body 1 can move on the ground, enabling the bridge erecting machine to travel smoothly; it can be selectively arranged that the dimension of the traveling beam 41 in the transverse direction of the main beam 6 is larger than the dimension of the frame body 1 in the transverse direction of the main beam 6, so that when the frame body 1 moves relative to the traveling beam 41 within a certain range, the contact area between the frame body 1 and the traveling beam 41 remains unchanged.

[0095] In the above-mentioned traveling wheel set, a motor can be selectively provided, and by driving the traveling wheel set to rotate through the motor, the frame body 1 can be moved, so that the traveling wheel set can drive the main beam 6 to move.

[0096] The above-mentioned second positioning member 452 can be selectively arranged on the traveling beam 41, so that the second positioning member 452 can be connected to the first positioning member 451 on the frame body 1 through a connecting member, and the positioning pin on the auxiliary positioning member 46 can also be selectively detachably connected to the traveling beam 41.

[0097] Referring to Figures 1 to 4 As shown, in some embodiments, the traveling wheel set includes two rolling wheels. On the side of the traveling beam 41 facing away from the frame body 1, there are provided two first mounting portions 47 and two second mounting portions 48. The two first mounting portions 47 are arranged at intervals in the transverse direction of the main beam 6. The two second mounting portions 48 are both arranged between the two first mounting portions 47, and the two second mounting portions 48 are arranged at intervals in the transverse direction of the main beam 6. The two first mounting portions 47 are symmetrically arranged about the midpoint of the traveling beam 41 in the transverse direction of the main beam 6, and the two second mounting portions 48 are symmetrically arranged about the midpoint of the traveling beam 41 in the transverse direction of the main beam 6; the two rolling wheels are respectively connected to the two first mounting portions 47 or the two rolling wheels are respectively connected to the two second mounting portions 48. With such an arrangement, by connecting the rolling wheels to the first mounting portion 47 or the second mounting portion 48, the distance between the two rolling wheels can be adjusted, enabling the bridge erecting machine to carry box girders of different sizes.

[0098] Specifically, the first mounting portion 47 and the second mounting portion 48 can be selected as flange members provided on the traveling beam 41. The two first mounting portions 47 are arranged at both ends of the traveling beam 41 along the transverse direction of the main beam 6, and the two second mounting portions 48 are arranged at positions close to the middle of the traveling beam 41. The two first mounting portions 47 are symmetric about the midpoint of the traveling beam 41, which can enable the rear legs to be in a balanced state when the two rolling wheels are supported on the bridge deck or the ground; the two second mounting portions 48 are symmetric about the midpoint of the traveling beam 41, which can enable the rear legs to be in a balanced state when the two rolling wheels are supported on the bridge deck or the ground.

[0099] The above-mentioned traveling wheel set includes two rolling wheels. The rotating shafts of the rolling wheels are arranged along the transverse direction of the main beam 6. When the bridge erecting machine needs to transport double-track precast box girders, the two rolling wheels are connected to the two first mounting portions 47, so that the distance between the two rolling wheels is relatively large, improving the stability of the rear legs when lifting and transporting double-track box girders; when the bridge erecting machine needs to transport single-track precast box girders, the two rolling wheels are connected to the two second mounting portions 48, so that the distance between the two rolling wheels is relatively small, improving the flexibility of the rear legs when moving on the bridge deck or the ground when transporting single-track precast box girders.

[0100] Refer to Figure 1 、 Figure 2 and Figure 6 As shown in

[0101] A plurality of steering structures 43 are arranged on the traveling beam 41 at intervals along the transverse direction of the main beam 6, and a plurality of wheel body assemblies 42 are connected to the plurality of steering structures 43 in one-to-one correspondence;

[0102] The steering drive member is arranged on the frame body 1 and is connected to any one of the steering structures 43. The synchronizing rod 44 is arranged on one side of the plurality of steering structures 43 along the longitudinal direction of the main beam 6 and extends along the transverse direction of the main beam 6. The plurality of steering structures 43 are connected to each other through the synchronizing rod 44, so that the steering drive member drives the plurality of steering structures 43 to rotate in the same direction by the same angle.

[0103] Specifically, the number of the wheel body assemblies 42 and the steering structures 43 can both be selected as two. The two steering structures 43 are arranged at intervals in the transverse direction of the main beam 6. The two wheel body assemblies 42 are connected to the two steering structures 43, so that the two wheel body assemblies 42 support the frame body 1 on the ground. The wheel body assembly 42 includes a wheel body 421. The wheel body 421 rotates to enable the frame body 1 to move on the ground. The direction in which the wheel body 421 advances when rotating on the ground is the traveling direction of the wheel body assembly 42. When the bridge erecting machine passes through a curved section, the wheel body 421 rotates relative to the frame body 1 to change the traveling direction of the wheel body 421, thereby adjusting the moving direction of the frame body 1 and the position of the main beam 6 where the frame body 1 is provided, so that one end of the main beam 6 where the frame body 1 is provided moves relative to the other end of the main beam 6 away from the frame body 1, thereby adjusting the orientation of the main beam 6.

[0104] After the above-mentioned wheel body assemblies 42 and steering structures 43 are connected in cooperation with each other, they can be used as a rolling wheel. The two wheel body assemblies 42 and the two steering structures 43 are connected in one-to-one correspondence to form two rolling wheels. The two rolling wheels are connected to each other by a synchronizing rod 44. That is, after the two steering structures 43 are respectively connected to the two first mounting parts 47, the two wheel body assemblies 42 are respectively connected to the two steering structures 43, so that the rear legs can be adapted to transport double-track precast box girders. At this time, the distance between the two steering structures 43 is relatively far, and a synchronizing rod 44 with a longer length is required to connect the two steering structures 43. After the two steering structures 43 are respectively connected to the two second mounting parts 48, the two wheel body assemblies 42 are respectively connected to the two steering structures 43, so that the rear legs can be adapted to transport single-track precast box girders. At this time, the distance between the two steering structures 43 is relatively close, and a synchronizing rod 44 with a shorter length needs to be replaced, so that the synchronizing rod 44 with a shorter length connects the two steering structures 43. That is, when adjusting the distance between the two steering structures 43, the synchronizing rod 44 with the corresponding length is replaced to realize the connection of the two steering structures 43.

[0105] The above-mentioned steering structure 43 can be selected as a rotating shaft rotatably arranged on the side surface of the frame body 1 away from the main beam 6. The rotating shaft extends along the height direction of the frame body 1. The wheel body assembly 42 is connected to the rotating shaft. The rotating shaft drives the wheel body assembly 42 to rotate relative to the frame body 1, thereby adjusting the direction of the rotating shaft of the wheel body 421 of the wheel body assembly 42, so as to change the advancing direction of the wheel body assembly 42 driving the frame body 1, thereby adjusting the position of the main beam 6 and facilitating the bridge erecting machine to pass through a curved section. Of course, a flange can also be selected as the steering structure on the side surface of the frame body 1 away from the main beam 6. A rotating shaft rotatably connected to the frame body 1 is provided on the flange. The wheel body assembly 42 is connected to the flange, so that when the flange rotates relative to the frame body 1, it drives the wheel body assembly 42 to rotate relative to the frame body 1 to adjust the corresponding traveling direction of the wheel body assembly 42.

[0106] The above-mentioned steering drive can be selected as a hydraulic cylinder or a pneumatic cylinder. The hydraulic cylinder or the pneumatic cylinder has a telescopic end that can extend and retract. The hydraulic cylinder or the pneumatic cylinder is connected to the frame body, and the telescopic end of the hydraulic cylinder or the pneumatic cylinder is connected to the rotating shaft, so that when the telescopic end extends and retracts, it can drive the rotating shaft to drive the wheel assembly 42 to rotate. Of course, the steering drive can also be selected as a motor. A rack is arranged on the periphery of the steering structure 43. The motor is installed on the frame body 1, and a gear is arranged at the output end of the motor. The gear at the output end of the motor meshes with the rack on the periphery of the steering structure 43, and the output end of the motor rotates to drive the steering structure 43 to rotate through the cooperation of the gear and the rack.

[0107] The above-mentioned synchronizing rod 44 can be selected as a straight rod extending along the transverse direction of the main beam 6. The synchronizing rod 44 is arranged on the frame body 1 along the longitudinal direction of the main beam 6, so that the synchronizing rod 44 is located on the same side of multiple steering structures 43, and the distance between the synchronizing rod 44 and each steering structure 43 in the longitudinal direction of the main beam 6 is equal. After connecting multiple steering structures 43 to the synchronizing rod 44 in a rotating manner, when one steering structure 43 rotates, it drives the synchronizing rod 44 to move, and the movement of the synchronizing rod 44 drives other steering structures 43 to rotate, so that the distance that the synchronizing rod 44 moves relative to each steering structure 43 is the same. Therefore, multiple steering structures 43 can rotate in the same direction by the same angle.

[0108] Multiple through holes can be selectively arranged on the above-mentioned synchronizing rod 44. There are bumps on the steering structure 43. The bumps are rotatably connected to the through holes through bolts or pin structures. The bumps of multiple steering structures 43 are respectively rotatably connected to multiple through holes in a one-to-one correspondence. Multiple steering structures 43 are simultaneously rotatably connected to the synchronizing rod 44. When the synchronizing rod 44 moves along the transverse direction of the main beam 6, the synchronizing rod 44 drives multiple steering structures 43 to rotate simultaneously. And the synchronizing rod 44 is on one side of multiple steering structures 43, so that when the synchronizing rod 44 moves, it drives multiple steering structures 43 to rotate in the same direction by the same angle.

[0109] By rotatably connecting a plurality of steering structures 43 to one side of the frame body 1, a plurality of wheel body assemblies 42 are connected to the plurality of steering structures 43 one by one, so that the plurality of wheel body assemblies 42 support the frame body 1 and the main beam 6 on the ground; the synchronizing rod 44 is rotatably connected to the plurality of steering structures 43, and the steering driving member is connected between one steering structure 43 and the frame body 1, so that when the steering driving member drives one steering structure 43 to rotate, the other steering structures 43 can be driven by the synchronizing rod 44 to rotate in the same direction by the same angle, realizing the simultaneous adjustment of the traveling directions corresponding to the plurality of wheel body assemblies 42. When the rear outriggers travel on a curved section, the plurality of wheel body assemblies 42 instantaneously adjust the traveling direction according to the curved section, so as to instantaneously adjust the position of the main beam 6 on the curved section, enabling the rear outriggers to move on the center line of the curved section. Thus, after the bridge erecting machine passes through the curved section, the main beam 6 is on the center line of the subsequent section of the curved section, avoiding the need to adjust the orientation and position of the bridge erecting machine after passing through the curved section to perform subsequent jacking and erection operations, thereby improving the working efficiency of the bridge erecting machine.

[0110] Referring to Figure 1 , Figure 2 and Figure 6 As shown, in some embodiments, the wheel body assembly 42 includes a wheel body 421, a fixed arm 422, a connecting arm 423, and a telescopic arm 424;

[0111] One end of the fixed arm 422 is connected to the steering structure 43, and the other end is rotatably connected to the connecting arm 423. One end of the telescopic arm 424 is rotatably connected to the fixed arm 422, and the other end is rotatably connected to the end of the connecting arm 423 away from the fixed arm 422. The telescopic arm 424 expands and contracts relative to the fixed arm 422 to drive the connecting arm 423 to rotate relative to the fixed arm 422, and the wheel body 421 is rotatably connected to the connecting arm 423 and rotates synchronously with the fixed arm 422. With such a setting, the elongation and shortening of the telescopic arm 424 can adjust the relative position between the wheel body 421 and the frame body 1, forming a suspension system for the wheel body 421 by the fixed arm 422, the telescopic arm 424, and the connecting arm 423. When the wheel body 421 rolls on the ground or the bridge surface, the wheel body 421 can fully abut against the ground or the bridge surface, enabling the wheel body 421 to be evenly stressed in each part, and the suspension system formed by the telescopic arm 424, the connecting arm 423, and the fixed arm 422 can absorb part of the vibration, thereby reducing the bump of the bridge erecting machine during traveling.

[0112] Specifically, the wheel body 421 can be selected to have a rotating shaft, the rotating shaft is rotatably connected to the connecting arm 423, and the rotating shaft of the wheel body 421 is perpendicular to the connecting arm 423. Of course, bolts or pins can also be selected to rotatably connect the wheel body 421 to the connecting arm 423.

[0113] The above-mentioned fixed arm 422 and connecting arm 423 can be selected to be rod-shaped structural members, one end of the fixed arm 422 is fixedly connected to the steering structure 43, and the other end extends along the height direction c of the frame body 1 toward the direction away from the frame body 1, one end of the connecting arm 423 can be selected to be rotatably connected to the end of the fixed arm 422 away from the frame body 1 through a bolt or a pin, and the other end of the connecting arm 423 can be selected to be rotatably connected to the telescopic arm 424 through a bolt or a pin; the telescopic arm 424 can be selected to be a telescopic cylinder, the telescopic cylinder has a telescopic end that can be telescoped, the telescopic cylinder is connected to the frame body 1, and the telescopic end is connected to the connecting arm 423.

[0114] The two ends of the telescopic arm 424 are rotatably connected to the fixed arm 422 and the connecting arm 423 respectively. The telescopic arm 424 can be selected to be connected to the end of the fixed arm 422 away from the connecting arm 423, and the telescopic arm 424 can be selected to be connected to the end of the connecting arm 423 away from the fixed arm 422, so that the fixed arm 422, the connecting arm 423 and the telescopic arm 424 together form a structure that is approximately triangular. The telescopic arm 424 changes the distance between its two ends by telescoping, thereby changing the shape of the triangular structure formed by the fixed arm 422, the connecting arm 423 and the telescopic arm 424.

[0115] The distance between the two ends of the telescopic arm 424 increases as the telescopic arm 424 extends, and the distance between the two ends of the telescopic arm 424 decreases as the telescopic arm 424 shortens. When the telescopic arm 424 extends, the connecting arm 423 rotates relative to the fixed arm 422 in a direction away from the frame body 1, so that the wheel body 421 on the connecting arm 423 moves in a direction away from the frame body 1, so that the wheel body 421 can fully abut against the ground. When the bridge-building machine passes through a pit, the force exerted on the connecting arm 423 by the extension of the telescopic arm 424 can make the wheel body 421 abut against the bottom surface of the pit in time, reducing the bumps of the bridge-building machine when passing through the pit. That is, the fixed arm 422, the telescopic arm 424 and the connecting arm 423 form a suspension system for the wheel body 421, so that when the wheel body 421 rolls on a variety of grounds, the wheel body 421 can fully abut against the ground.

[0116] The embodiment of the present application also provides a bridge-building machine, including a main beam 6 and the rear support legs as described above; one end of the frame body 1 away from the lateral movable part 4 is connected to the main beam 6.

[0117] By installing rear legs on the main beam 6, the frame body 1 supports the main beam 6 when in the working position, avoids vehicles transporting beam pieces when in the flipped position, and can adjust the direction of the main beam 6 by relative sliding between the frame body 1 and the transverse movable part 4.

[0118] When the rear outrigger and the bridge erecting machine provided by the embodiment of the present application are specifically used, when the bridge erecting machine is transported by a transport vehicle, the frame body 1 is in the flipping position. The transport vehicle enters between the front outrigger and the rear outrigger of the main beam 6 through the lower part of the frame body 1 in the flipping position, so that the transport vehicle loads the main beam 6 to transport the bridge erecting machine.

[0119] When the bridge erecting machine needs to be supported on the ground or the bridge deck, the rotating driving member 2 applies a force to the auxiliary block 16 to drive the frame body 1 to rotate to the working position first. The positioning and mounting member of the movable sleeve 52 is inserted and connected with the first through hole 53 of the support rod 51. The limiting portion 14 on the guide sleeve 13 is disengaged from the guide post 122. The lifting driving member 124 drives the lower cross beam 121 and the traveling beam 41 to move away from the upper cross beam 11, so that the traveling wheel set on the traveling beam 41 fully abuts against the ground. After the transverse movable portion 4 and the frame body 1 stably support the main beam 6 on the ground, the relative movement between the lower beam assembly 12 and the upper cross beam 11 stops. The limiting portion 14 on the guide sleeve 13 is detachably connected with the guide post 122, so that the position of the upper cross beam 11 on the guide post 122 is in a stable state. At this time, the traveling wheel set on the traveling beam 41 supports on the ground. When the bridge erecting machine travels on a straight section, the traveling wheel set rotates to move the frame body 1 on the ground.

[0120] When the bridge erecting machine moves along the bridge deck of a curved bridge and extends out of the bridge head, there is an included angle between the longitudinal direction of the main beam 6 of the bridge erecting machine and the center line of the bridge to be erected. The frame body 1 supports the main beam 6 in the working position, and the transverse movable portion 4 is in the initial position on the frame body 1. The transverse driving member 3 is started, and the transverse driving member 3 drives the frame body 1 to slide relative to the traveling beam 41 along the transverse direction of the main beam 6, so as to adjust the relative position between the rear end and the front end of the main beam 6 provided with the rear outrigger, so that the longitudinal direction of the main beam 6 is erected along the center line of the subsequent bridge structure, and the bridge structure formed by assembling the beam slabs through the bridge erecting machine can be arranged along the longitudinal direction of the main beam 6.

[0121] After the bridge erecting machine completes the erection, the first through hole 53 of the support rod 51 is disengaged from the positioning and mounting member on the movable sleeve 52. The rotating driving member 2 applies a force to the auxiliary block 16, and the frame body 1 rotates relative to the main beam 6 to rotate the frame body 1 to the flipping position. At this time, the positioning and mounting member of the movable sleeve 52 is inserted and connected with the second through hole 54 of the support rod 51. The vehicle for transporting the beam slab enters between the front outrigger and the rear outrigger from the lower side of the frame body 1 in the flipping position to install the beam slab on the trailer on the main beam 6, so that the beam slab can be assembled by the bridge erecting machine to form a bridge structure.

[0122] It should be noted that in this document, relational terms such as "first" and "second" are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "comprising", "including" or any other variant thereof are intended to cover non-exclusive inclusion, such that a process, method, article or device comprising a series of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article or device. Without further limitation, an element defined by the phrase "comprising an..." does not exclude the presence of additional identical elements in the process, method, article or device comprising said element.

[0123] The above are only specific embodiments of the present application, enabling those skilled in the art to understand or implement the present application. Various modifications to these embodiments will be obvious to those skilled in the art, and the general principles defined herein can be implemented in other embodiments without departing from the spirit or scope of the present application. Therefore, the present application will not be limited to these embodiments described herein, but rather will conform to the broadest scope consistent with the principles and novel features disclosed herein.

Claims

1. A rear outrigger for mounting on the main beam (6) of a bridge erecting machine, characterized in that, It includes a frame body (1), a lateral driving member (3) and a lateral movable part (4); One end of the frame body (1) is connected to the main beam (6) of the bridge erecting machine, and the lateral movable part (4) is slidably connected to the other end of the frame body (1); The lateral driving member (3) is connected between the frame body (1) and the lateral movable part (4) to drive the frame body (1) to move transversely along the main beam (6) relative to the lateral movable part (4).

2. The rear outrigger according to claim 1, wherein, One end of the frame body (1) is rotatably connected to the main beam (6), and a rotation driving member (2) is rotatably connected to the frame body (1). The rotation driving member (2) is rotatably connected to the main beam (6) so that the rotation driving member (2) drives the frame body (1) to switch between a working position and a flipping position; The working position is a position perpendicular to the main beam (6), and the flipping position is a position attached to one side of the main beam (6).

3. The rear outrigger according to claim 2, characterized in that, A support rod (51) is rotatably arranged on the frame body (1). The support rod (51) extends longitudinally along the main beam (6). An activity sleeve (52) is rotatably arranged on the main beam (6). One end of the support rod (51) away from the frame body (1) is movably inserted into the activity sleeve (52); A second through hole (54) and a first through hole (53) are provided on the support rod (51), and a positioning and mounting member is detachably connected to the activity sleeve (52); When the frame body (1) is in the working position, the positioning and mounting member is detachably connected to the first through hole (53). When the frame body (1) is in the flipping position, the positioning and mounting member is detachably connected to the second through hole (54).

4. The rear outrigger according to claim 2 or 3, characterized in that, The frame body (1) includes an upper cross beam (11), a lower beam assembly (12) and a lifting driving member (124). The upper cross beam (11) is movably connected to the lower beam assembly (12); The lifting driving member (124) is connected between the upper cross beam (11) and the lower beam assembly (12) to drive the lower beam assembly (12) to approach or move away from the upper cross beam (11); The upper cross beam (11) is rotatably connected to the main beam (6). The rotation driving member (2) is connected to the upper cross beam (11). The lateral movable part (4) is slidably connected to the side of the lower beam assembly (12) facing away from the upper cross beam (11).

5. The rear leg according to claim 4, characterized in that, The lower beam assembly (12) includes a lower cross beam (121), a movable beam (123) and two guide columns (122). The lower cross beam (121) is arranged opposite to the upper cross beam (11). Two guide columns (122) are connected to the side of the lower cross beam (121) facing the upper cross beam (11). Guide sleeves (13) are arranged at both ends of the upper cross beam (11). The two guide columns (122) are movably inserted into the two guide sleeves (13) in one-to-one correspondence; The moving beam (123) is disposed between the upper cross beam (11) and the lower cross beam (121) and is detachably connected to the guide post (122), and the lifting driving member (124) is connected between the moving beam (123) and the upper cross beam (11).

6. The rear outrigger according to claim 2 or 3, characterized in that, A first positioning member (451) is provided on the frame body (1), and a second positioning member (452) is provided on the lateral moving portion (4). When the frame body (1) switches between the working position and the flipping position, the first positioning member (451) and the second positioning member (452) are connected to each other through a connecting member. When the frame body (1) moves transversely along the main beam (6) relative to the lateral moving portion (4), the connecting member is separated from the first positioning member (451) and the second positioning member (452). And / or, an auxiliary positioning member (46) is provided on the frame body (1), and a positioning pin is movably provided on the auxiliary positioning member (46). When the frame body (1) switches between the working position and the flipping position, the positioning pin is connected to the lateral moving portion (4). When the frame body (1) moves transversely along the main beam (6) relative to the lateral moving portion (4), the positioning pin is separated from the lateral moving portion (4).

7. The rear outrigger according to any one of claims 1 to 3, characterized in that, The lateral moving portion (4) includes a traveling beam (41) and a traveling wheel set mounted on the traveling beam (41). The traveling beam (41) is slidably connected to the frame body (1), the traveling wheel set is disposed on a side of the traveling beam (41) facing away from the frame body (1), and the lateral driving member (3) is connected between the traveling beam (41) and the frame body (1).

8. The rear outrigger according to claim 7, characterized in that, The traveling wheel set includes two rolling wheels. Two first mounting portions (47) and two second mounting portions (48) are provided on a side of the traveling beam (41) facing away from the frame body (1). The two first mounting portions (47) are spaced apart transversely along the main beam (6). The two second mounting portions (48) are both disposed between the two first mounting portions (47), and the two second mounting portions (48) are spaced apart transversely along the main beam (6). The two first mounting portions (47) are symmetrically arranged about the midpoint of the traveling beam (41) transversely along the main beam (6). The two second mounting portions (48) are symmetrically arranged about the midpoint of the traveling beam (41) transversely along the main beam (6). The two rolling wheels are respectively connected to the two first mounting portions (47) or the two rolling wheels are respectively connected to the two second mounting portions (48).

9. The rear outrigger according to claim 7, wherein The traveling wheel set includes a synchronizing rod (44), a steering driving member, a plurality of steering structures (43) and a plurality of wheel body assemblies (42). A plurality of steering structures (43) are spaced apart transversely along the main beam (6) on the traveling beam (41), and a plurality of wheel body assemblies (42) are respectively connected to the plurality of steering structures (43). The steering drive member is disposed on the frame body (1) and connected to any one of the steering structures (43). The synchronizing rod (44) is disposed on one side of the plurality of steering structures (43) along the longitudinal direction of the main beam (6) and extends along the transverse direction of the main beam (6). The plurality of steering structures (43) are interconnected by the synchronizing rod (44) so that the steering drive member drives the plurality of steering structures (43) to rotate in the same direction by the same angle.

10. A bridge erecting machine, characterized in that, It includes a main beam (6) and the rear leg according to any one of claims 1 to 9; One end of the frame body (1) away from the lateral movable part (4) is connected to the main beam (6).

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