CN110106794B - Efficient bridge girder erection machine - Google Patents
Efficient bridge girder erection machine Download PDFInfo
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- CN110106794B CN110106794B CN201910563142.1A CN201910563142A CN110106794B CN 110106794 B CN110106794 B CN 110106794B CN 201910563142 A CN201910563142 A CN 201910563142A CN 110106794 B CN110106794 B CN 110106794B
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- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
- E01D21/00—Methods or apparatus specially adapted for erecting or assembling bridges
- E01D21/06—Methods or apparatus specially adapted for erecting or assembling bridges by translational movement of the bridge or bridge sections
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Abstract
The invention discloses a high-efficiency bridge girder erection machine, which comprises a main girder, wherein the front part of the main girder is provided with a first front support leg and a second front support leg, the rear part of the main girder is provided with a rear support leg, the upper part of the main girder is provided with an upper guide rail, a crane truck is arranged on the upper guide rail, the left side surface and the right side surface of the main girder are respectively provided with a side guide rail, the high-efficiency bridge girder erection machine also comprises a moving seat, the moving seat is fixedly provided with a second front support leg, the main girder is also fixedly provided with a first front support leg, a connecting mechanism is arranged between the first front support leg and the second front support leg, the main girder is provided with a driving mechanism for driving the moving seat to move, the rear support leg is fixedly connected; the rear supporting legs drive the main beam to move, the first front supporting legs move, the second front supporting legs are supported at the bridge piers in the process, when the second front supporting legs reach the next bridge pier, the second front supporting legs move to the rear sides of the first front supporting legs under the driving of the driving mechanism and are connected together through the connecting mechanism, and the bridging efficiency is effectively improved.
Description
Technical Field
The invention relates to a bridge girder erection machine.
Background
The bridge girder erection machine is equipment for placing prefabricated beam pieces on a prefabricated bridge pier. The existing lower guide type bridge girder erection machine in the bridge girder erection machine refers to a type that when a girder is erected, a supporting leg spreading wing and a rear supporting leg interact and are hoisted at a fixed point. The lower guide type bridge erecting machine takes a lower guide beam as a beam conveying channel, wings of a middle supporting leg, rear supporting legs and front supporting legs of the bridge erecting machine are supported, and the tire type beam conveying trolley conveys the concrete box girder to a belly cavity of the bridge erecting machine; and the middle supporting leg is in a wing folding state, after the front supporting leg and the middle supporting leg bear the load, the rear supporting leg is unloaded, the concrete box girder is lifted away, and the concrete box girder directly falls on the pier top for installation. The operation of erecting the bridge is completed only by depending on a huge lower guide beam support, and the operation procedure of the bridge erecting machine is complicated, the efficiency is low and the safety is poor due to the long length and the heavy weight of the lower guide beam.
Disclosure of Invention
The invention provides the efficient bridge girder erection machine which can effectively improve bridge girder erection efficiency and has high safety in order to make up for the defects.
The technical scheme of the invention is as follows: a high-efficient bridging machine, includes the girder, the front portion of girder is equipped with first preceding landing leg and the preceding landing leg of second, the back landing leg is installed at the rear portion of girder, the upper portion of girder is equipped with the guide rail, install the crane truck on the guide rail, the left side and the right side surface of girder are equipped with the side guide rail respectively, high-efficient bridging machine still includes the removal seat that can follow the removal of side guide rail, it establishes between the side guide rail on girder left side and girder right side to remove the seat, and fixed mounting has the preceding landing leg of second on removing the seat, it has the first preceding landing leg to lie in before the preceding landing leg of second still fixed mounting on the girder, be equipped with between first preceding landing leg and the preceding landing leg of second and make the fixed coupling mechanism together of preceding landing leg of first preceding landing leg and second, install the drive on the girder that the drive removes the seat and removes, the back landing leg with girder fixed connection, the lower part of back landing leg is equipped with running gear, be equipped with the installation on the girder the mount pad of landing leg before first, first preceding landing leg is including installing the landing leg device on the mount pad, the landing leg is including installing before the second on the removal seat landing leg device.
As the preferred technical scheme, the mounting seat and the moving seat both comprise seat bodies, the landing leg device comprises a left landing leg hinged on the left side of the seat body and a right landing leg hinged on the right side of the seat body, a driving hydraulic cylinder is fixedly mounted on the seat body, a piston rod of the driving hydraulic cylinder vertically extends downwards, the left landing leg and the right landing leg both comprise an upper supporting leg and a lower supporting leg hinged at the lower end of the upper supporting leg, a hinged shaft 57 between the upper supporting leg and the lower supporting leg is arranged on the inner side of the upper supporting leg and the lower supporting leg, connecting rods are hinged between the upper supporting leg and the piston rod, a vertical frame is mounted on the lower surface of the seat body, a lower supporting leg and a piston rod of the left landing leg and a lower supporting leg and a piston rod of the right landing leg are provided with lower supporting leg inward-folding driving mechanisms, and locking mechanisms are further arranged between the, the lower end of the lower supporting leg is provided with a telescopic supporting seat.
As a preferable technical proposal, the lower supporting leg inward-folding driving mechanism comprises a lower connecting rod hinged at the inner side of the lower supporting leg, a seat body is fixedly arranged on the vertical frame, a U-shaped cavity is arranged in the seat body, the U-shaped cavity comprises a left vertical cavity, a right vertical cavity and a connecting cavity connected between the lower ends of the left vertical cavity and the right vertical cavity, a first piston is movably arranged in the left vertical cavity, a second piston is movably arranged in the right vertical cavity, a first piston rod extending upwards out of the left vertical cavity is fixedly arranged on the first piston, a second piston rod extending out of the right vertical cavity is fixedly arranged on the second piston, the piston rod is provided with a pressing block capable of acting on the upper end of the first piston rod, the upper end of the second piston rod is hinged with the lower connecting rod, and the area of the cross section of the left vertical cavity is larger than that of the cross section of the right vertical cavity.
As a preferred technical scheme, the connecting mechanism comprises two supporting plates fixedly arranged on two supporting legs of a first front supporting leg, the two supporting plates are oppositely arranged, dovetail grooves extending in the left-right direction are formed in the upper surfaces of the supporting plates, clamping plates are movably arranged in the dovetail grooves, semicircular grooves are respectively formed in the adjacent end portions of the two clamping plates, when the two clamping plates are close to each other, the semicircular grooves of the two clamping plates are spliced into a circular hole, a supporting spring for supporting the clamping plates to be close to each other is arranged on the supporting plates, a limiting ring positioned under the circular hole is fixedly arranged on the mounting seat, a limiting column capable of being inserted into the limiting ring is fixedly arranged on a piston rod of a driving hydraulic cylinder on a second front supporting leg, a supporting column is fixedly arranged at the upper end of the limiting column, a cone is arranged at the upper, the diameter of the big end of the cone is larger than the diameter of a circular hole formed by splicing the semicircular grooves of the two clamping plates, the diameter of the support column is smaller than the diameter of a circular hole formed by splicing the semicircular grooves of the two clamping plates, and the diameter of the big end of the cone is equal to the diameter of the limiting column.
As preferred technical scheme, locking mechanism is including establishing locking pneumatic cylinder in the last supporting leg, the up end of lower supporting leg is equipped with the confession the locking piston rod male locking hole of locking pneumatic cylinder, wear out locking piston rod's upper end the piston of locking pneumatic cylinder, locking hydraulic cylinder's locking piston rod's tip is equipped with the locking piston chamber, locking piston is installed to the locking piston intracavity, locking piston's rear end face with be equipped with the extension spring that resets that makes locking piston reset backward between the locking piston chamber, be equipped with in the locking piston rod with the rear end face of locking piston with the liquid through hole of the cavity intercommunication between the chamber wall in locking piston chamber, the liquid through hole opening is in locking piston rod's up end.
As preferred technical scheme, locking mechanism is including establishing locking pneumatic cylinder in the last supporting leg, the up end of lower supporting leg is equipped with the confession the locking piston rod male locking hole of locking pneumatic cylinder, flexible supporting seat is including establishing the lower terminal surface of lower supporting leg is equipped with the guiding hole, movable mounting has the guide bar in the guiding hole, the lower extreme fixed mounting of guide bar has the supporting seat, locking the hole with the guiding hole communicates each other, locking pneumatic cylinder is multistage pneumatic cylinder, the piston rod of locking pneumatic cylinder is used in the guide bar and is driven the guide bar stretches out the guiding hole downwards, the guide bar with be equipped with reset spring between the guiding hole.
As the preferred technical scheme, coupling mechanism includes fixed mounting and is in move the locking actuating hydraulic cylinder on the seat, fixed mounting has two relative mounting panels that set up on the mount pad, two be equipped with the clearance between the mounting panel, two the upper surface of mounting panel is equipped with the dovetail respectively, movable mounting has the slider in the dovetail, slider fixed mounting has the limiting plate, it has the control lever, two to articulate on the limiting plate the lower extreme of control lever articulates on the ring body, fixed mounting has the cone on locking actuating hydraulic cylinder's the piston rod, two be equipped with semi-circular groove respectively on the adjacent tip of limiting plate, two when the limiting plate is close to together, two the semi-circular groove of limiting plate splices into the circular port, the diameter of the main aspects of cone is greater than two the semi-circular groove of limiting plate splices into the diameter of circular port, the piston rod diameter of locking actuating hydraulic cylinder is less than two the The diameter in hole, be equipped with the spacing ring on locking actuating cylinder's the piston rod, the external diameter of spacing ring is greater than the external diameter of ring shape, the internal diameter of ring shape is greater than the diameter of the main aspects of cone, the ring shape is located under the circular port, the slider with be equipped with damping device between the dovetail, the limiting plate with be equipped with the supporting spring who makes two limiting plates be close to each other between the mounting panel.
Due to the adoption of the technical scheme, the efficient bridge girder erection machine comprises a main girder, wherein the front part of the main girder is provided with a first front supporting leg and a second front supporting leg, the rear part of the main girder is provided with a rear supporting leg, the upper part of the main girder is provided with an upper guide rail, a crane truck is arranged on the upper guide rail, the left side surface and the right side surface of the main girder are respectively provided with a side guide rail, the efficient bridge girder erection machine further comprises a moving seat which can be moved along the side guide rails, the moving seat is arranged between the side guide rails on the left side and the right side of the main girder, a second front supporting leg is fixedly arranged on the moving seat, the main girder is further fixedly provided with the first front supporting leg which is positioned in front of the second front supporting leg, a connecting mechanism which can fix the first front supporting leg and the second front supporting leg together is arranged between the first front supporting leg and the second front supporting leg, the rear support leg is fixedly connected with the main beam, a walking device is arranged at the lower part of the rear support leg, a mounting seat for mounting the first front support leg is arranged on the main beam, the first front support leg comprises a support leg device mounted on the mounting seat, and the second front support leg comprises the support leg device mounted on the moving seat; the girder is driven by the rear supporting leg to move, the first front supporting leg moves, the second front supporting leg is supported at the pier in the process, when the second front supporting leg reaches the next pier, the second front supporting leg moves to the rear side of the first front supporting leg under the driving of the driving mechanism and is connected together through the connecting mechanism, the bridging efficiency is effectively improved, and the first front supporting leg and the second front supporting leg are adopted to support simultaneously, so that the safety is effectively improved.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.
FIGS. 1 and 2 are schematic diagrams illustrating the operation of an embodiment of the present invention;
FIG. 3 is a schematic view of the structure of the leg assembly in an embodiment of the present invention;
FIG. 4 is an enlarged view of a portion of FIG. 3 at I;
FIG. 5 is an enlarged view of a portion of FIG. 3 at II;
FIG. 6 is a schematic view of an alternative locking mechanism in accordance with an embodiment of the present invention;
FIG. 7 is a schematic illustration of a first coupling mechanism in an embodiment of the invention;
FIG. 8 is a schematic structural view of a first coupling mechanism in an embodiment of the present invention;
FIG. 9 is a schematic structural view of a second attachment mechanism in an embodiment of the present invention;
fig. 10 is a schematic view showing the operation of the second coupling mechanism according to the embodiment of the present invention.
Detailed Description
As shown in fig. 1-2, a high-efficient bridging machine, including girder 1, girder 1 comprises two vertical parallel case roof beams in this embodiment, has two horizontal tie beams to link together between two case roof beams, girder 1's front portion is equipped with landing leg 3 before first landing leg 2 and the second, back landing leg 4 is installed at girder 1's rear portion, girder 1's upper portion is equipped with the guide rail, go up and install crane truck 5 on the guide rail, crane truck includes preceding crane truck and back crane truck, girder 1's left side and right side surface are equipped with side guide rail 7 respectively, high-efficient bridging machine still includes and follows the removal seat 6 of side guide rail removal, remove the seat and establish between girder left side and the side guide rail on girder right side, remove and go up fixed mounting on the seat 6 and have the landing leg 3 before the second.
As shown in fig. 1 to 2, the main beam 1 is further fixedly mounted with a first front leg 2 located in front of the second front leg, a connection mechanism for fixing the first front leg 2 and the second front leg 3 together is disposed between the first front leg 2 and the second front leg 3, the main beam 1 is mounted with a driving mechanism for driving the moving seat to move, the rear leg 4 is fixedly connected with the main beam 1, and a walking device is disposed at the lower portion of the rear leg 4, the rear leg is of a closed O-shaped leg structure in this embodiment, and is a heavy-load supporting leg and a walking power source of the whole bridge erecting machine, and the walking device is a general device of the bridge erecting machine and is not described herein again. The main beam is provided with a mounting seat for mounting the first front supporting leg, the first front supporting leg comprises a supporting leg device mounted on the mounting seat 9, and the second front supporting leg comprises a supporting leg device mounted on the moving seat. As shown in figure 2, the rear supporting leg drives the main beam to move, the first front supporting leg moves, the second front supporting leg is supported at the pier in the process, when the second front supporting leg reaches the next pier, the second front supporting leg moves to the rear side of the first front supporting leg under the driving of the driving mechanism and is connected together through the connecting mechanism, the bridging efficiency is effectively improved, the first front supporting leg and the second front supporting leg are adopted for supporting simultaneously, and the safety is effectively improved. The movable seat is in rolling fit with a track below the main beam 1 through a walking wheel train. The walking wheel train is used as the driving mechanism and comprises a tug system, and the tug system is an existing mature product and is not repeated herein. Preceding crane car and back crane car are used for carrying the beam piece, preceding crane car with back crane car is prior art, and its concrete structure also no longer gives details here.
As shown in fig. 3 to 5, the mounting seat and the moving seat both comprise a seat body 10, the leg device comprises a left leg 11 hinged on the left side of the seat body 10 and a right leg 12 hinged on the right side of the seat body, a driving hydraulic cylinder 13 is further fixedly mounted on the seat body, a piston rod 14 of the driving hydraulic cylinder vertically extends downwards, the left leg and the right leg each comprise an upper support leg 15 and a lower support leg 16 hinged at the lower end of the upper support leg, a connecting rod 17 is hinged between the upper support leg and the piston rod 14, a vertical frame 58 is mounted on the lower surface of the seat body, a lower support leg inward-folding driving mechanism is arranged between the lower support leg of the left leg and the piston rod as well as between the lower support leg of the right leg and the piston rod, a hinge shaft 57 between the upper support leg and the lower support leg is arranged on the inner side of the upper support leg, namely the adjacent side surfaces of the left leg and the right leg, so that the lower supporting leg can be folded inwards, a locking mechanism is also arranged between the upper supporting leg 15 and the lower supporting leg 16, and a telescopic supporting seat is arranged at the lower end of the lower supporting leg 16. In order to ensure the support reliability in this embodiment, the width of the lower support leg is greater than the width of the upper support leg. The piston rod of the driving hydraulic cylinder moves downwards to drive the upper supporting leg to swing outwards through the connecting rod, the telescopic supporting seat is retracted, the telescopic supporting seat does not act on the pier any more, and meanwhile the lower end of the lower supporting leg driven by the lower supporting leg inwards swings through the inward folding driving mechanism, so that the lower supporting leg is not supported on the pier any more, and the first front supporting leg and the second front supporting leg can move relative to the pier.
In order to realize synchronous inward folding of the lower supporting leg and outward swinging of the upper supporting leg, the lower supporting leg inward folding driving mechanism comprises a lower connecting rod 18 hinged on the inner side of the lower supporting leg, a seat body 19 is fixedly mounted on the vertical frame, a U-shaped cavity is arranged in the seat body, the U-shaped cavity comprises a left vertical cavity 20, a right vertical cavity 21 and a connecting cavity 22 connected between the lower ends of the left vertical cavity and the right vertical cavity, a first piston 23 is movably mounted in the left vertical cavity, a second piston 24 is movably mounted in the right vertical cavity, a first piston rod 25 extending upwards from the left vertical cavity is fixedly mounted on the first piston, a second piston rod 26 extending from the right vertical cavity is fixedly mounted on the second piston, a pressing block 27 capable of acting on the upper end of the first piston rod is arranged on the piston rod 14, and the upper end of the second piston rod is hinged with the lower connecting rod 18, the area of the cross section of the left vertical cavity is larger than that of the cross section of the right vertical cavity. Because vertical frame fixed mounting is on the pedestal, when the piston rod of drive pneumatic cylinder moved down, drive the briquetting and act on first piston rod, promote first piston downstream, with the fluid in the vertical intracavity in a left side crowded into the vertical intracavity in a right side through connecting the chamber, because the area in the cross section in the vertical chamber in a left side is greater than the area in the cross section in the vertical chamber in a right side, the less stroke of first piston motion just can drive the great stroke of second piston motion, and the second piston rod just can be bigger scope upward movement like this to lower extreme inwardly swinging of supporting leg is driven down through lower connecting rod.
As shown in fig. 7 to 8, the connecting mechanism includes two supporting plates 27 fixedly mounted on two upper supporting legs of the first front supporting leg, the two supporting plates 27 are oppositely disposed, dovetail grooves extending in the left-right direction are formed on the upper surface of the supporting plates 27, clamping plates 28 are movably mounted in the dovetail grooves, semicircular grooves 29 are respectively formed on the adjacent end portions of the two clamping plates 28, when the two clamping plates are close to each other, the semicircular grooves of the two clamping plates are spliced to form a circular hole, supporting springs 30 for supporting the clamping plates close to each other are arranged on the supporting plates, a limiting ring 31 located under the circular hole is fixedly mounted on the mounting seat, a limiting column 32 capable of being inserted into the limiting ring is fixedly mounted on a piston rod of the driving hydraulic cylinder on the second front supporting leg, a piston rod fixing plate 53 is arranged between the limiting column and the piston rod, fixed mounting has on the piston rod fixed plate the piston rod, the upper end fixed mounting of spacing post has support column 33, the upper end of support column is equipped with cone 34, the diameter of the main aspects of cone is greater than two the semicircular groove of splint splices into the diameter of circular port, the diameter of support column is less than two the semicircular groove of splint splices into the diameter of circular port, the diameter of the main aspects of cone 34 equals the diameter of spacing post 32, the internal diameter of spacing post is less than the internal diameter of spacing ring is so that spacing post can insert in the spacing ring. When the front supporting leg is ready to be supported on the pier, the piston rod of the hydraulic cylinder is driven to move upwards, so that the upper supporting leg swings inwards, meanwhile, the lower end of the lower supporting leg swings outwards, so that the upper supporting leg and the lower supporting leg are on the same straight line, in the process of driving the piston rod of the hydraulic cylinder to move upwards, the cone body upwards passes through the limiting ring along with the limiting column, then the limiting column continues to move upwards, the cone body upwards acts in the semi-circular groove of the clamping plate, due to the arrangement of the supporting spring, the clamping plates are close together, the conical body moves upwards to separate the two clamping plates, when the cone body passes through the two clamping plates and the supporting column enters the circular hole, the clamping plates are tightened under the action of the supporting spring, because the diameter of circular port is less than the diameter of the main aspects of cone, the cone can not the downstream to guaranteed that spacing post can not deviate from in the spacing ring, thereby guaranteed coupling mechanism's reliability. Because the supporting plates are fixedly arranged on the upper supporting leg of the first front supporting leg, the distance between the supporting plates on the two upper supporting legs is increased by the outward swinging of the upper supporting leg, so that the clamping plates are not close to each other any more, in the process that the piston rod of the driving hydraulic cylinder moves downwards to drive the upper supporting leg to swing outwards, the cone moves to the lower part of the clamping plates through the mutually separated clamping plates along with the downward movement of the piston rod of the driving hydraulic cylinder, the limiting column does not penetrate into the limiting ring any more, so that the first front supporting leg and the second front supporting leg can be separated from each other, when the first front supporting leg is separated from the second front supporting leg, the rear supporting leg drives the main beam to move, the first front supporting leg moves to the upper part of the next pier, at the moment, the piston rod of the driving hydraulic cylinder moves upwards again to support the first front supporting leg on the pier, and then the second front supporting leg moves forwards and is connected with the, and supported on the pier. In order to make the cone body better push the two clamping plates to be separated, the groove walls of the semicircular grooves of the two clamping plates can be provided with rollers and the like, so that the relative movement of the cone body and the clamping plates is smoother.
As shown in fig. 3 and 5, locking mechanism is including establishing locking pneumatic cylinder 35 in the upper support leg, the up end of lower support leg is equipped with the confession locking hydraulic cylinder's locking piston rod male locking hole 36, the upper end of locking piston rod is worn out the piston of locking hydraulic cylinder, the tip of locking piston rod 37 of locking hydraulic cylinder is equipped with locking piston chamber 38, locking piston 39 is installed to the locking piston intracavity, locking piston's rear end face with be equipped with between the locking piston chamber 35 and make locking piston reset extension spring 40 that resets backward, be equipped with in the locking piston rod 37 with locking piston 39's rear end face with the liquid through hole 51 of cavity intercommunication between the chamber wall of locking piston chamber, liquid through hole 51 opening is in locking piston rod's up end.
As shown in fig. 6, the locking mechanism includes a locking hydraulic cylinder 35 arranged in the upper support leg, the upper end surface of the lower support leg is provided with a locking hole 36 for inserting a locking piston rod of the locking hydraulic cylinder, the telescopic support seat includes a guide hole 41 arranged on the lower end surface of the lower support leg, a guide rod is movably arranged in the guide hole 41, the lower end of the guide rod 42 is fixedly provided with a support seat 43, the locking hole 36 is communicated with the guide hole 41, the locking hydraulic cylinder is a multi-stage hydraulic cylinder, a piston rod of the locking hydraulic cylinder acts on the guide rod 42 to drive the guide rod to extend downwards out of the guide hole, a return spring 56 is arranged between the guide rod and the guide hole, the guide rod is provided with a spring limit ring 55, the return spring is sleeved outside the guide rod, and the lower end of the return spring abuts against the hole wall of the guide hole, the upper end of the reset spring is abutted against the spring limiting ring. The locking piston rod of the locking hydraulic cylinder is inserted into the locking hole, so that the upper supporting leg and the lower supporting leg cannot be bent, the rigidity of connection of the upper supporting leg and the lower supporting leg is ensured, the locking hydraulic cylinder adopts a multi-stage hydraulic cylinder, the piston rod of the locking hydraulic cylinder acts on the guide rod, and the guide rod can be driven to downwards extend out of the guide hole, so that the supporting seat is supported on the pier.
As shown in fig. 9 to 10, the connecting mechanism includes a locking driving hydraulic cylinder 44 fixedly mounted on the moving seat, two mounting plates 45 arranged oppositely are fixedly mounted on the mounting seat, a gap 52 is provided between the two mounting plates 45, dovetail grooves are respectively provided on the upper surfaces of the two mounting plates 45, a slider is movably mounted in each dovetail groove, a limiting plate 47 is fixedly mounted on the slider, a control rod 48 is hinged on the limiting plate, the lower ends of the two control rods are hinged on a ring body 49, a cone 34 is fixedly mounted on a piston rod of the locking driving hydraulic cylinder, semicircular grooves 29 are respectively provided on the adjacent end portions of the two limiting plates 47, when the two limiting plates are close together, the semicircular grooves of the two limiting plates are spliced to form a circular hole, the diameter of the large end of the cone 34 is larger than the diameter of the semicircular grooves of the two limiting plates spliced to form the circular hole, the piston rod diameter of locking drive hydraulic cylinder 44 is less than two the diameter of circular port is spliced into in the semicircular groove of limiting plate, the clearance can supply the cone with the piston rod of locking drive hydraulic cylinder 44 passes through, be equipped with spacing ring 50 on the piston rod of locking drive hydraulic cylinder, the external diameter of spacing ring 50 is greater than the external diameter of ring body 49, the internal diameter of ring body 49 is greater than the diameter of the main aspects of cone 34 to make cone 34 can pass the ring body, the ring body is located under the circular port, the slider with be equipped with damping device between the dovetail, the limiting plate with be equipped with the supporting spring that makes two limiting plates be close to each other between the mounting panel, damping device is including establishing the slider with friction surface between the dovetail, the friction surface is close to the coefficient of friction of the one end in semicircular groove is greater than the friction surface is kept away from the coefficient of friction of the one end in semicircular groove. The supporting spring can enable the two limiting plates to be close together, but the speed of the two limiting plates close together due to the arrangement of the friction surface is greatly smaller than the speed of the two limiting plates close together when the friction surface is not arranged. And the cone upward movement under the drive of locking drive hydraulic cylinder, because the diameter of the main aspects of cone is greater than the diameter of circular port, cone upward movement can make two limiting plate alternate segregation to make cone motion to circular port top, the spacing ring does not act on the ring body at this in-process, and the power that locking drive hydraulic cylinder promoted the piston rod moreover is greater than supporting spring's resistance and the resistance of friction surface far away, makes the limiting plate along with the slider for dovetail rapid movement.
When the connecting mechanism is ready to be connected, the piston rod of the locking driving hydraulic cylinder moves upwards to drive the conical body to penetrate through the annular body and then penetrate through the circular hole formed by splicing the two limiting plates, the diameter of the large end of the cone is larger than that of the circular hole, the cone cannot move downwards, so that the first front supporting leg and the second front supporting leg are combined together and cannot be separated, when the linking mechanism is unlocked, the piston rod of the locking driving hydraulic cylinder moves upwards to enable the limiting ring to act on the annular body, the piston rod moves upwards to drive the annular body to move upwards, so that the two limiting plates are driven to be separated from each other through the control rod, the distance between the two limiting plates is increased, the piston rod moves downwards, and as the damping device is arranged between the sliding block and the dovetail groove, the elastic force of the supporting spring cannot enable the sliding block to rapidly move and reset along the dovetail groove, so that the cone has enough time to move downwards, the cone is located below the limiting plate, the limiting plate does not block downward movement of the cone any more, and therefore unlocking of the connecting mechanism is achieved, and the first front supporting leg and the second front supporting leg are not combined together any more. In order to improve the reliability of the combination between the first front supporting leg and the second front supporting leg, the thicknesses of the limiting plate and the mounting plate can be increased, so that the limiting effect of the limiting plate is more reliable.
The foregoing shows and describes the general principles, essential features, and advantages of the invention. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are described in the specification and illustrated only to illustrate the principle of the present invention, but that various changes and modifications may be made therein without departing from the spirit and scope of the present invention, which fall within the scope of the invention as claimed. The scope of the invention is defined by the appended claims and equivalents thereof.
Claims (7)
1. The efficient bridge girder erection machine is characterized by comprising a main girder, wherein the front part of the main girder is provided with a first front supporting leg and a second front supporting leg, the rear part of the main girder is provided with a rear supporting leg, the upper part of the main girder is provided with an upper guide rail, a crane car is installed on the upper guide rail, the left side surface and the right side surface of the main girder are respectively provided with a side guide rail, the efficient bridge girder erection machine further comprises a moving seat which can move along the side guide rails, the moving seat is arranged between the side guide rails on the left side and the right side of the main girder, a second front supporting leg is fixedly installed on the moving seat, the main girder is fixedly provided with the first front supporting leg which is positioned in front of the second front supporting leg, a connecting mechanism which enables the first front supporting leg and the second front supporting leg to be fixed together is arranged between the first front supporting leg and the second front supporting leg, and, the rear supporting leg is fixedly connected with the main beam, a walking device is arranged on the lower portion of the rear supporting leg, a mounting seat for mounting the first front supporting leg is arranged on the main beam, the first front supporting leg comprises a supporting leg device mounted on the mounting seat, and the second front supporting leg comprises a supporting leg device mounted on the moving seat.
2. The efficient bridge girder erection machine as claimed in claim 1, wherein the mounting seat and the moving seat each comprise a seat body, the leg device comprises a left leg hinged on the left side of the seat body and a right leg hinged on the right side of the seat body, a driving hydraulic cylinder is further fixedly mounted on the seat body, a piston rod of the driving hydraulic cylinder extends vertically and downwardly, the left leg and the right leg each comprise an upper support leg and a lower support leg hinged on the lower end of the upper support leg, a hinge shaft between the upper support leg and the lower support leg is arranged at the inner side of the upper support leg and the lower support leg, a connecting rod is hinged between the upper support leg and the piston rod, a vertical frame is mounted on the lower surface of the seat body, a lower support leg inward-folding driving mechanism is arranged between the lower support leg and the piston rod of the left leg and between the lower support leg and the piston rod of the, the upper supporting legs and the lower supporting legs are also provided with locking mechanisms, and the lower ends of the lower supporting legs are provided with telescopic supporting seats.
3. The efficient bridge girder erection machine as claimed in claim 2, wherein said lower support leg invagination driving mechanism comprises a lower connecting rod hinged at the inner side of said lower support leg, a seat body is fixedly arranged on the vertical frame, a U-shaped cavity is arranged in the seat body, the U-shaped cavity comprises a left vertical cavity, a right vertical cavity and a connecting cavity connected between the lower ends of the left vertical cavity and the right vertical cavity, a first piston is movably arranged in the left vertical cavity, a second piston is movably arranged in the right vertical cavity, a first piston rod extending upwards out of the left vertical cavity is fixedly arranged on the first piston, a second piston rod extending out of the right vertical cavity is fixedly arranged on the second piston, the piston rod is provided with a pressing block capable of acting on the upper end of the first piston rod, the upper end of the second piston rod is hinged with the lower connecting rod, and the area of the cross section of the left vertical cavity is larger than that of the cross section of the right vertical cavity.
4. The efficient bridge girder erection machine according to claim 1, wherein the connecting mechanism comprises supporting plates fixedly mounted on two supporting legs of the first front supporting leg, the two supporting plates are oppositely arranged, a dovetail groove extending in the left-right direction is formed in the upper surface of the supporting plate, clamping plates are movably mounted in the dovetail groove, semicircular grooves are respectively formed in the adjacent end portions of the two clamping plates, when the two clamping plates are close together, the semicircular grooves of the two clamping plates are spliced into a circular hole, a supporting spring for supporting the clamping plates close together is arranged on the supporting plate, a limiting ring positioned under the circular hole is fixedly mounted on the mounting seat, a limiting column capable of being inserted into the limiting ring is fixedly mounted on a piston rod of a driving hydraulic cylinder on the second front supporting leg, a supporting column is fixedly mounted at the upper end of the limiting column, the upper end of support column is equipped with the cone, the diameter of the main aspects of cone is greater than two the semicircular groove of splint splices into the diameter of circular port, the diameter of support column is less than two the semicircular groove of splint splices into the diameter of circular port, the diameter of the main aspects of cone equals the diameter of spacing post.
5. The efficient bridge girder erection machine according to claim 2, wherein the locking mechanism comprises a locking hydraulic cylinder arranged in the upper support leg, the upper end surface of the lower support leg is provided with a locking hole for inserting a locking piston rod of the locking hydraulic cylinder, the upper end of the locking piston rod penetrates out of a piston of the locking hydraulic cylinder, a locking piston cavity is arranged at the end part of the locking piston rod of the locking hydraulic cylinder, a locking piston is arranged in the locking piston cavity, a reset tension spring for enabling the locking piston to reset backwards is arranged between the rear end surface of the locking piston and the locking piston cavity, a liquid through hole communicated with the rear end surface of the locking piston and a cavity between the cavity walls of the locking piston cavity is arranged in the locking piston rod, and the opening of the liquid through hole is arranged on the upper end surface of the locking piston rod.
6. The efficient bridge girder erection machine as claimed in claim 2, wherein the locking mechanism comprises a locking hydraulic cylinder arranged in the upper support leg, the upper end surface of the lower support leg is provided with a locking hole for inserting a locking piston rod of the locking hydraulic cylinder, the telescopic support seat comprises a guide hole arranged on the lower end surface of the lower support leg, a guide rod is movably arranged in the guide hole, the lower end of the guide rod is fixedly provided with a support seat, the locking hole is communicated with the guide hole, the locking hydraulic cylinder is a multi-stage hydraulic cylinder, a piston rod of the locking hydraulic cylinder acts on the guide rod to drive the guide rod to extend downwards out of the guide hole, and a reset spring is arranged between the guide rod and the guide hole.
7. The efficient bridge girder erection machine according to claim 1, wherein the connecting mechanism comprises a locking driving hydraulic cylinder fixedly mounted on the movable seat, two opposite mounting plates are fixedly mounted on the mounting seat, a gap is provided between the two mounting plates, dovetail grooves are respectively formed on the upper surfaces of the two mounting plates, a slider is movably mounted in each dovetail groove, a limiting plate is fixedly mounted on each slider, a control rod is hinged on each limiting plate, the lower ends of the two control rods are hinged on an annular body, a cone is fixedly mounted on a piston rod of the locking driving hydraulic cylinder, semicircular grooves are respectively formed in the adjacent end portions of the two limiting plates, when the two limiting plates are close together, the semicircular grooves of the two limiting plates are spliced to form a circular hole, the diameter of the large end of the cone is larger than the diameter of the circular hole spliced by the semicircular grooves of the two limiting plates, the diameter of a piston rod of the locking driving hydraulic cylinder is smaller than two, the semicircular grooves of the limiting plates are spliced into the diameter of a circular hole, a limiting ring is arranged on the piston rod of the locking driving hydraulic cylinder, the outer diameter of the limiting ring is larger than the outer diameter of the ring body, the inner diameter of the ring body is larger than the diameter of the large end of the cone, the ring body is located under the circular hole, a damping device is arranged between the sliding block and the dovetail groove, and a supporting spring which enables the two limiting plates to be close to each other is arranged between the limiting plates and the mounting plate.
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| CN201910563142.1A CN110106794B (en) | 2019-06-26 | 2019-06-26 | Efficient bridge girder erection machine |
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| CN110106794B true CN110106794B (en) | 2020-02-25 |
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| CN111764301A (en) * | 2020-07-28 | 2020-10-13 | 贵州路桥集团有限公司 | Vertical and longitudinal connecting device for bridge erecting machine |
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| JP2009114751A (en) * | 2007-11-07 | 2009-05-28 | Nippon Sharyo Seizo Kaisha Ltd | Delivery device and delivery system |
| CN201588174U (en) * | 2009-11-17 | 2010-09-22 | 徐工集团工程机械有限公司 | Fast articulated zero preload track connecting device |
| CN107059629A (en) * | 2017-03-22 | 2017-08-18 | 河南省黄河防爆起重机有限公司 | Sightseeing trajectory bridge lifting bridging equipment |
| CN107165051A (en) * | 2017-05-15 | 2017-09-15 | 中铁三局集团线桥工程有限公司 | Elevated station list double line box girder erection construction method |
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2019
- 2019-06-26 CN CN201910563142.1A patent/CN110106794B/en active Active
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2009114751A (en) * | 2007-11-07 | 2009-05-28 | Nippon Sharyo Seizo Kaisha Ltd | Delivery device and delivery system |
| CN201588174U (en) * | 2009-11-17 | 2010-09-22 | 徐工集团工程机械有限公司 | Fast articulated zero preload track connecting device |
| CN107059629A (en) * | 2017-03-22 | 2017-08-18 | 河南省黄河防爆起重机有限公司 | Sightseeing trajectory bridge lifting bridging equipment |
| CN107165051A (en) * | 2017-05-15 | 2017-09-15 | 中铁三局集团线桥工程有限公司 | Elevated station list double line box girder erection construction method |
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