CN114481837A

CN114481837A - Bridge girder erection machine without counterweight via hole

Info

Publication number: CN114481837A
Application number: CN202111589434.6A
Authority: CN
Inventors: 李朝辉; 李嘉琛; 李春丽; 贾定安
Original assignee: Henan Yuyuan Intelligent Equipment Co ltd
Current assignee: Henan Yuyuan Intelligent Equipment Co ltd
Priority date: 2021-12-23
Filing date: 2021-12-23
Publication date: 2022-05-13

Abstract

The invention discloses a bridge girder erection machine without a balance weight via hole, which relates to the technical field of bridge girder erection machines and comprises a moving device and a hoisting device, wherein the moving device comprises a girder erection machine and a girder transporting vehicle, the girder erection machine comprises a guide beam, and a first hydraulic rod is fixedly arranged at the bottom of the guide beam through a cushion block. According to the invention, through the arrangement of the moving device, the bridge girder erection machine has the effect of realizing the function of the bridge girder erection machine without adopting a counterweight type through hole and adding a girder, and through the matching arrangement of the guide beam and the extension beam, when the bridge girder erection machine needs to be moved to the next pier for bridging in the use process, the second hydraulic rod can be firstly retracted, and the first hydraulic rod and the third hydraulic rod extend out to support the whole bridge girder erection machine, so that the effects of convenience in movement and cost saving are achieved, and the purposes of high practicability and wide application range are achieved.

Description

Bridge girder erection machine without counterweight through holes

Technical Field

The invention relates to the technical field of bridge girder erection machines, in particular to a bridge girder erection machine without a counterweight through hole.

Background

Along with the enlargement of the urbanization scale of China, public facilities of China are also perfected, and a bridge is a common public facility.

The bridge is generally a structure which is erected on rivers, lakes and seas and allows vehicles, pedestrians and the like to smoothly pass through. The bridge generally comprises an upper structure, a lower structure, a support and an auxiliary structure, wherein the upper structure is also called a bridge span structure and is a main structure for spanning obstacles; the lower structure comprises a bridge abutment, a bridge pier and a foundation; the support is a force transmission device arranged at the supporting positions of the bridge span structure and the bridge pier or the bridge abutment; the auxiliary structures refer to bridge end butt straps, tapered revetments, diversion works and the like.

The bridge building is a large project, people can use various machines, and the bridge erecting machine is a common large machine. The bridge girder erection machine is equipment for placing prefabricated beam pieces on prefabricated bridge piers and is divided into a road bridge girder erection machine, a railway bridge girder erection machine and the like.

The existing highway bridge erecting machine mostly adopts a counterweight via hole mode, and the via hole can be formed only under the condition that a prefabricated beam with a counterweight exists. The supporting legs are taken away together when the holes are drilled, only a part of transverse rails are taken, and the self weight of the main beam is added, so that the bending moment generated by the main beam when the holes are drilled is generally larger than the bending moment generated by the trolley in the crotch when the beam is erected, namely the bending moment of the main beam at the position of the middle supporting leg is larger than or equal to the bending moment in the crotch, the material of the main beam needs to be increased, the self weight is increased, and the material utilization rate is low; and the front end is heavy when passing through the hole, and the downwarping degree is great, will tighten up the rear end counter weight, makes the girder be in not horizontality, and well landing leg produces a horizontal force that pushes forward, probably pushes away well landing leg, has the potential safety hazard.

Although the bridge girder erection machine without the counterweight through hole disclosed in the chinese patent application publication specification CN109577204A adopts a hydraulic system, a winch and a driving motor, and does not have manual movement of a support leg and a transverse moving rail, the labor intensity of workers is reduced, but the bridge girder erection machine without the counterweight through hole has the disadvantages of poor practicability, incapability of accurate positioning and stable lifting, and small application range.

Disclosure of Invention

Technical problem to be solved

Aiming at the defects of the prior art, the invention provides a bridge girder erection machine without a counterweight through hole, which has the advantages of convenient movement, stable lifting, high automation degree and the like and solves the problems in the background art.

(II) technical scheme

In order to realize the purposes of stable lifting and high automation degree, the invention provides the following technical scheme: a bridge girder erection machine without a counterweight via hole comprises a moving device and a hoisting device, wherein the moving device comprises a girder erection machine and a girder transporting vehicle, the girder erection machine comprises a guide beam, the bottom of the guide beam is fixedly provided with a first hydraulic rod through a cushion block, the top of the guide beam is fixedly provided with a guide rail through an L-shaped support plate, one side, close to the guide rail, of the top of the guide beam is fixedly provided with a support block, the top of the guide beam is fixedly provided with a first rack, one end of the guide beam is rotatably connected to a first roller, the bottom of the guide beam is abutted to an extension beam through the first roller, one side of the extension beam is slidably connected with a sleeve beam, one end of the sleeve beam is abutted to the bottom of the guide beam through a second roller, the extension beam is slidably connected to the inside of the sleeve beam, and one end of the extension beam is fixedly provided with a connecting column; the beam transporting vehicle comprises moving wheels, a support frame and a support post, wherein the moving wheels are abutted against the top of a guide rail, the support frame is rotatably connected to one side of the moving wheels, the support post is fixedly installed on the top of a guide beam, a transmission shaft is rotatably connected to the inside of the support post, a chain wheel is fixedly installed at one end of the transmission shaft, the chain wheel is connected to the output end of a third servo motor through chain transmission, the third servo motor is fixedly installed on the top of the guide beam, the middle of the transmission shaft is fixedly installed on a transmission gear, a transmission rack is fixedly installed at the top of the support frame, the transmission gear is meshed with the transmission rack, a connecting rod is rotatably connected to one side of the support frame, and the other end of the connecting rod is rotatably connected with a hoisting plate; hoist device is including hoist and mount hydraulic stem and hoist and mount frame, hoist and mount hydraulic stem and the equal fixed mounting of hoist and mount frame are in the bottom of hoist and mount board, one side of hoist and mount frame is rotated and is connected with little hoisting wheel, one side fixed mounting of little hoisting wheel has big hoisting wheel, one side that hoist and mount frame is close to little hoisting wheel is rotated and is connected with supplementary hoisting wheel, one side transmission of supplementary hoisting wheel is connected with wire rope

Preferably, the bottom fixed mounting of spliced pole is at the second hydraulic stem, the other end that stretches out the roof beam rotates through the fixed plate and is connected with the non return pole, one side fixed mounting that the fixed plate is close to the non return pole is at the reed barb, the wave that overlaps the both sides of roof beam and all offer with non return pole looks adaptation leads to the groove, overlap one side that the roof beam is close to first gyro wheel and pass through motor fixed block fixed mounting and have a servo motor.

Preferably, the output end of the first servo motor is connected with the first rack through a gear in a meshed mode, a second servo motor is fixedly mounted on one side, close to the second roller, of the bottom of the extension beam, a second rack is fixedly mounted on one side, based on the principle of the top of the guide beam, of the first servo motor, and the output end of the second servo motor is connected with the second rack through the gear in a meshed mode.

Preferably, the small hoisting wheel and the large hoisting wheel are of a coaxial connected structure, the steel wire rope is installed on one side of the small hoisting wheel, the large hoisting wheel and the auxiliary hoisting wheel according to the installation mode shown in the figure, one side of the steel wire rope is in transmission connection with the extending end of the hoisting hydraulic rod, the other end of the steel wire rope is in transmission connection with a hoisting rod, and the hoisting rod is of a two-section structure.

Preferably, the inside of getting up the jib has set up threaded hole, the one end fixed mounting that gets up the jib has the micro-machine, the output fixed mounting of micro-machine has the screw rod, one side that the micro-machine was kept away from to the screw rod has set up the screw thread, one side sliding connection that the screw rod is close to the micro-machine is in the inside of getting up the jib, the top butt that gets up the jib has the roof beam of installing in advance.

Preferably, a third hydraulic rod is fixedly mounted at one end, close to the second idler wheel, of the sleeve beam, a positioning wheel is rotatably connected to one side of the connecting rod, a positioning plate is fixedly mounted at one side, close to the supporting frame, of the top of the guide beam, a sliding groove is formed in the positioning plate, and the positioning wheel abuts against the inside of the sliding groove.

Preferably, the recess with reed barb looks adaptation is seted up to one side of non return pole, the quantity of second rack, second servo motor, cover roof beam and extension roof beam is two, and the symmetric distribution is in the both sides of nose girder, the quantity of first hydraulic stem second hydraulic stem third hydraulic stem is two, and evenly distributed is in the bottom of nose girder, and all the butt in its bottom has the pier

Preferably, the number of connecting rods is four, and the symmetric distribution is in the both sides of hoist and mount board, the length of first rack and second rack is half of guide beam, the inclined plane structure with non return pole looks adaptation is all seted up at the both ends of cover roof beam inner groove, hoist device's quantity is two, and the symmetric distribution is in the both sides of hoist and mount board.

Preferably, the hoisting plate is of a U-shaped structure, the two positioning plates are symmetrically distributed at the top of the guide beam, the length of the sleeve beam is half of that of the guide beam, the four supporting blocks are uniformly distributed at the top of the guide beam, and one side of each supporting block, which is close to the positioning plate, is fixedly provided with a photoelectric sensor.

(III) advantageous effects

Compared with the prior art, the invention provides a bridge girder erection machine without counterweight via holes, which has the following beneficial effects:

1. the bridge girder erection machine without the counterweight via hole has the advantages that the bridge girder erection machine can realize the effect of a bridge girder erection machine without adopting a counterweight via hole and without adding a heavy girder by arranging the moving device, when the bridge girder erection machine needs to be moved to the next bridge pier for bridging in the use process, the second hydraulic rod can be firstly packed up, the first hydraulic rod and the third hydraulic rod extend out to support the whole bridge girder erection machine, the second servo motor is operated, the extension beam is driven to extend out by the mutual meshing of the second servo motor and the second rack, due to the arrangement of the non-return rod, when the extension rod extends out, the non-return rod can fall into the through groove at one side of the sleeve beam under the top contact of the reed barb, the non-return rod can be prevented from sliding back to cause safety accidents when the second servo motor or other objects are in top contact due to failure, when the other end of the extension beam is in top contact with the next bridge pier through the second hydraulic rod, because the both ends that lead to the inslot of cover roof beam are provided with the inclined plane structure, can realize promoting the non return pole and upwards rotate and make the reed barb hook realize in the recess of non return pole and hook up the non return effect that ends the non return, can pack up first hydraulic stem this moment, second hydraulic stem and third hydraulic stem stretch out and support this bridging machine, through fixing the cooperation that first servo motor on one side of the cover roof beam passes through gear and first rack with the guide beam under the cooperation of first gyro wheel and second gyro wheel remove to next pier department stretch out the effect that realizes removing this bridging machine with first hydraulic stem, thereby it is convenient to have played the removal, the effect of saving the cost, the purpose that has reached the practicality height, the range of application is wide.

2. The bridge girder erection machine without the counterweight via hole has the advantages that the bridge girder erection machine has the effects of convenient hoisting and accurate positioning through the arrangement of the hoisting device, the hoisting rod is of a two-section structure in the using process, the hoisting rod can be placed at the bottom of the pre-installed beam during hoisting, the screw rod driven by the small motor rotates, the two sections of the hoisting rods are connected into a whole to realize the bearing effect through the thread far away from one side of the small motor and the thread far away from the small motor, and vice versa, then one side of the steel wire rope is jacked up through the hoisting hydraulic rod, the effect of hoisting the pre-installed beam is realized through the matching of the small hoisting wheel, the large hoisting wheel and the auxiliary hoisting wheel, and the transmission gear is driven to rotate through the matching of the chain and the transmission shaft by the third servo motor due to the arrangement of the positioning device, and then drive the carriage through the drive rack and remove in the logical inslot of locating plate under the effect of removing the wheel, realize the accurate positioning of hoist and mount board through the position of control locating plate through-groove to play convenient to use, the accurate effect in location, reached the purpose that the lift is steady, degree of automation is high.

Drawings

FIG. 1 is a schematic perspective view of the present invention;

FIG. 2 is a schematic diagram of a third servo motor according to the present invention;

FIG. 3 is a schematic structural diagram of a second servo motor according to the present invention;

FIG. 4 is a schematic structural diagram of the front view of the invention;

FIG. 5 is a schematic top view of the present invention;

FIG. 6 is a schematic left-side view of the present invention;

FIG. 7 is a schematic view of the overall cross-section of the present invention;

FIG. 8 is a schematic structural view of the axial full section of the present invention;

fig. 9 is an enlarged schematic structural view of fig. 4A of the present invention.

In the figure 1, a guide beam; 2. cushion blocks; 3. a first hydraulic lever; 4. a guide rail; 5. a support block; 6. a first rack; 7. a first roller; 8. extending the beam; 9. sleeving a beam; 10. a second roller; 11. a second hydraulic rod; 12. a fixing plate; 13. a check rod; 14. reed barb stripping; 15. a first servo motor; 16. a gear; 17. a second servo motor; 18. a second rack; 19. a moving wheel; 20. a support frame; 21. a pillar; 22. a drive shaft; 23. a sprocket; 24. a chain; 25. a third servo motor; 26. a transmission gear; 27. a drive rack; 28. a connecting rod; 29. hoisting the plate; 30. hoisting a hydraulic rod; 31. a hoisting frame; 32. a small hoisting wheel; 33. a large hoisting wheel; 34. auxiliary hoisting wheels; 35. a wire rope; 36. lifting the suspender; 37. a small-sized motor; 38. a screw; 39. a third hydraulic lever; 40. positioning wheels; 41. positioning a plate; 42. a bridge pier; 43. pre-mounting a beam; 43. connecting columns; 44. pre-mounting a beam; 45. a photoelectric sensor.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Referring to fig. 1-9, a bridge girder erection machine without a counterweight via hole comprises a moving device and a hoisting device, wherein the moving device comprises a girder erection machine and a girder transporting vehicle, the girder erection machine comprises a guide beam 1, the bottom of the guide beam 1 is fixedly provided with a first hydraulic rod 3 through a cushion block 2, the top of the guide beam 1 is fixedly provided with a guide rail 4 through an L-shaped support plate, one side of the top of the guide beam 1, which is close to the guide rail 4, is fixedly provided with a support block 5, the top of the guide beam 1 is fixedly provided with a first rack 6, one end of the guide beam 1 is rotatably connected with a first roller 7, the bottom of the guide beam 1 is abutted with an extension beam 8 through the first roller 7, one side of the extension beam 8 is slidably connected with a sleeve beam 9, one end of the sleeve beam 9 is abutted with the bottom of the guide beam 1 through a second roller 10, the extension beam 8 is slidably connected inside the sleeve beam 9, and one end of the extension beam 8 is fixedly provided with a connecting column 43; the beam transporting vehicle comprises a moving wheel 19, a support frame 20 and a support post 21, wherein the moving wheel 19 is abutted against the top of the guide rail 4, the support frame 20 is rotatably connected to one side of the moving wheel 19, the support post 21 is fixedly arranged at the top of the guide beam 1, a transmission shaft 22 is rotatably connected inside the support post 21, one end of the transmission shaft 22 is fixedly provided with a chain wheel 23, the chain wheel 23 is in transmission connection with the output end of a third servo motor 25 through a chain 24, the third servo motor 25 is fixedly arranged at the top of the guide beam 1, the middle part of the transmission shaft 22 is fixedly arranged on a transmission gear 26, the top of the support frame 20 is fixedly provided with a transmission rack 27, the transmission gear 26 is in meshing connection with the transmission rack 27, one side of the support frame 20 is rotatably connected with a connecting rod 28, and the other end of the connecting rod 28 is rotatably connected with a hoisting plate 29; the hoisting device comprises a hoisting hydraulic rod 30 and a hoisting frame 31, the hoisting hydraulic rod 30 and the hoisting frame 31 are both fixedly arranged at the bottom of a hoisting plate 29, one side of the hoisting frame 31 is rotatably connected with a small hoisting wheel 32, one side of the small hoisting wheel 32 is fixedly provided with a large hoisting wheel 33, one side of the hoisting frame 31 close to the small hoisting wheel 32 is rotatably connected with an auxiliary hoisting wheel 34, the small hoisting wheel 32 and the large hoisting wheel 33 are of a coaxial connected structure, a steel wire rope 35 is arranged at one side of the small hoisting wheel 32, the large hoisting wheel 33 and the auxiliary hoisting wheel 34 in a mounting mode as shown in the figure, one side of the steel wire rope 35 is in transmission connection with the extending end of the hoisting hydraulic rod 30, the other end of the steel wire rope 35 is in transmission connection with a hoisting rod 36, the hoisting rod 36 is in a two-section structure, one side of the auxiliary hoisting wheel 34 is in transmission connection with the steel wire rope 35, the bottom of a connecting column 43 is fixedly arranged at the second hydraulic rod 11, the other end of the extending beam 8 is in rotation connection with a non-return rod 13 through a fixing plate 12, one side of the fixing plate 12 close to the check rod 13 is fixedly installed on the reed barb 14, wave-shaped through grooves matched with the check rod 13 are formed in the two sides of the sleeve beam 9, one side of the sleeve beam 9 close to the first roller 7 is fixedly installed with a first servo motor 15 through a motor fixing block, the output end of the first servo motor 15 is meshed with the first rack 6 through a gear 16, one side of the bottom of the extension beam 8 close to the second roller 10 is fixedly installed with a second servo motor 17, one side of the top of the guide beam 1, based on the principle, of the first servo motor 15 is fixedly installed with a second rack 18, the output end of the second servo motor 17 is meshed with the second rack 18 through the gear 16, a threaded hole is formed in the lifting rod 36, a small motor 37 is fixedly installed at one end of the lifting rod 36, a screw 38 is fixedly installed at the output end of the small motor 37, and threads are formed in one side of the screw 38 far away from the small motor 37, one side of the screw 38 close to the small motor 37 is connected inside the lifting rod 36 in a sliding manner, the top of the lifting rod 36 is abutted with a pre-installed beam 44, one end of the sleeve beam 9 close to the second roller 10 is fixedly provided with a third hydraulic rod 39, one side of the connecting rod 28 is connected with a positioning wheel 40 in a rotating manner, one side of the top of the guide beam 1 close to the support frame 20 is fixedly provided with a positioning plate 41, the inside of the positioning plate 41 is provided with a sliding groove, the positioning wheel 40 is abutted against the inside of the sliding groove, one side of the non-return rod 13 is provided with a groove matched with the reed barb 14, the number of the second rack 18, the second servo motor 17, the sleeve beam 9 and the extension beam 8 is two, the two second racks are symmetrically distributed at two sides of the guide beam 1, the number of the second hydraulic rods 11 and the third hydraulic rod 39 of the first hydraulic rod 3 is two, the second hydraulic rod is uniformly distributed at the bottom of the guide beam 1, the bottom of the two hydraulic rods is abutted with a pier 42, and the number of the connecting rod 28 is four, the length of the first rack 6 and the second rack 18 is half of that of the guide beam 1, the two ends of the through groove in the sleeve beam 9 are both provided with inclined plane structures matched with the non-return rods 13, the number of the hoisting devices is two, the hoisting devices are symmetrically distributed on the two sides of the hoisting plate 29, the hoisting plate 29 is of a U-shaped structure, the number of the positioning plates 41 is two, the positioning plates are symmetrically distributed on the top of the guide beam 1, the length of the sleeve beam 9 is half of that of the guide beam 1, the number of the supporting blocks 5 is four, the supporting blocks are uniformly distributed on the top of the guide beam 1, one side of the supporting blocks 5 close to the positioning plates 41 is fixedly provided with photoelectric sensors 45, through the arrangement of a moving device, the bridge erecting machine has the effect that the bridge erecting machine does not adopt counterweight type through holes, does not need to weight a main beam, the function of the bridge erecting machine can be realized, through the matching arrangement of the guide beam 1 and the extension beam 8, when the bridge erecting machine needs to move to the next bridge pier to be erected, the second hydraulic rod 11 can be firstly retracted, the first hydraulic rod 3 and the third hydraulic rod 39 extend out to support the whole bridge girder erection machine, the second servo motor 15 is operated, the second servo motor 15 is meshed with the second rack 18 to drive the extension beam 8 to extend out, due to the arrangement of the non-return rod 13, when the extension beam 8 extends out and simultaneously contacts with the top of the reed barb 14, the non-return rod 13 can fall into the through groove on one side of the sleeve beam 9 to prevent the extension beam from sliding back to cause safety accidents when the second servo motor 15 fails or contacts with other objects, when the other end of the extension beam 8 contacts with the next bridge pier through the top of the second hydraulic rod 11, due to the inclined plane structures arranged at the two ends of the through groove in the sleeve beam 9, the non-return rod 13 can be pushed to rotate upwards to enable the reed barb to hook in the groove of the non-return rod 13 to achieve the effect of hooking the non-return rod 13 and cancelling the non-return effect, at the moment, the first hydraulic rod can be retracted, The second hydraulic rod 11 and the third hydraulic rod 39 extend out to support the bridge erecting machine, the guide beam 1 is moved to the next pier through the cooperation of the gear 16 and the first rack 6 by the first servo motor 15 fixed on one side of the sleeve beam 9, the first hydraulic rod 3 extends out to realize the movement of the bridge erecting machine under the cooperation of the first roller 7 and the second roller 10, thereby achieving the effects of convenient movement and cost saving, achieving the purposes of high practicability and wide application range, and the bridge erecting machine has the effects of convenient lifting and accurate positioning through the arrangement of the lifting device, and through the arrangement of the lifting hydraulic rod 30 and the screw rod 38 in a matching way, in the using process, because the lifting rod 36 is of a two-section structure, the lifting rod 36 can be placed at the bottom of the pre-installation beam 44 during lifting, the screw rod 38 driven by the small motor 37 rotates, and through the thread far from one side of the small motor 37 and the thread far from the lifting rod 16 is connected with one section of the small motor 37, the two sections of lifting rods 36 are connected into a whole to achieve the bearing effect, and vice versa, then one side of a steel wire rope 35 is jacked up through the lifting hydraulic rod 30, the effect of lifting the pre-installed beam 44 is achieved through the matching of the small lifting wheel 32, the large lifting wheel 33 and the auxiliary lifting wheel 34, due to the fact that the positioning device is arranged, the transmission gear 26 can be driven to rotate through the third servo motor 25 through the matching of the chain 24 and the transmission shaft 22, the support frame 20 is driven to move in the through groove in the positioning plate 41 under the effect of the movable wheel 19 through the transmission rack 27, the accurate positioning of the lifting plate 29 is achieved through controlling the position of the through groove of the positioning plate 41, and therefore the purposes of convenience in use and accurate positioning are achieved, and the purposes of stable lifting and high automation degree are achieved.

When the bridge girder erection machine is used, firstly, when the bridge girder erection machine needs to be moved to the next bridge pier for bridging in the using process, the second hydraulic rod 11 can be firstly retracted, the first hydraulic rod 3 and the third hydraulic rod 39 extend out to support the whole bridge girder erection machine, the second servo motor 15 is operated, the extension beam 8 is driven to extend out through the mutual engagement of the second servo motor 15 and the second rack 18, due to the arrangement of the non-return rod 13, when the extension beam 8 extends out, the non-return rod 13 can fall into the through groove on one side of the sleeve beam 9 under the contact of the top of the reed barb 14, so that the safety accident caused by the backward sliding of the extension rod in the case that the second servo motor 15 fails or other objects are contacted on the top can be prevented, when the other end of the extension beam 8 is contacted to the next bridge pier through the second hydraulic rod 11, due to the arrangement of the inclined plane structures at the two ends of the through groove in the sleeve beam 9, the effect that the non-return rod 13 can be pushed to rotate upwards to enable the reed barb to hook in the groove of the non-return rod 13 to achieve the effect that the non-return rod 13 is not hooked in the non-return rod 13 to cancel the hooking of the non-return rod 13 The effect is that at the moment, the first hydraulic rod can be retracted, the second hydraulic rod 11 and the third hydraulic rod 39 extend out to support the bridge erecting machine, the guide beam 1 is moved to the next pier under the cooperation of the first roller 7 and the second roller 10 through the cooperation of the gear 16 and the first rack 6 by the first servo motor 15 fixed on one side of the sleeve beam 9, so as to realize the movement of the bridge erecting machine, thereby achieving the effects of convenient movement and cost saving, the lifting rod 36 is in a two-section structure in the using process through the matching arrangement of the lifting hydraulic rod 30 and the screw rod 38, the lifting rod 36 can be placed at the bottom of the pre-installation beam 44 during lifting, the screw rod 38 driven by the small motor 37 rotates, the two sections of the lifting rod 36 are connected into a whole through the screw thread on one side far away from the small motor 37 and the screw thread on one section far away from the small motor 37 of the lifting rod 16, so as to realize the supporting effect, vice versa, then one side of the steel wire rope 35 is jacked up through the hoisting hydraulic rod 30, the effect of hoisting the pre-installation beam 44 is achieved through the matching of the small hoisting wheel 32, the large hoisting wheel 33 and the auxiliary hoisting wheel 34, due to the fact that the positioning device is arranged, the transmission gear 26 can be driven to rotate through the matching of the chain 24 and the transmission shaft 22 through the third servo motor 25, the support frame 20 is driven to move in the through groove in the positioning plate 41 under the effect of the moving wheel 19 through the transmission rack 27, the accurate positioning of the hoisting plate 29 is achieved through controlling the position of the through groove of the positioning plate 41, and the effects of convenience in use and accurate positioning are achieved.

To sum up, the bridge girder erection machine without the counterweight via hole has the effect of realizing the function of a bridge girder erection machine without adopting a counterweight via hole through the arrangement of the moving device, the effect of the bridge girder erection machine can be realized without adding a heavy girder, the second hydraulic rod 11 can be firstly packed up by arranging the guide beam 1 and the extension beam 8 in a matching way, when the bridge girder erection machine needs to be moved to the next pier for bridging in the use process, the first hydraulic rod 3 and the third hydraulic rod 39 extend out to support the whole bridge girder erection machine, the second servo motor 15 is operated, the extension beam 8 is driven to extend out by the mutual engagement of the second servo motor 15 and the second rack 18, and due to the arrangement of the check rod 13, when the extension rod 8 extends out, the check rod 13 can fall in the through groove at one side of the sleeve beam 9 under the contact of the reed barb 14, so as to prevent the occurrence of safety accidents caused by the return slip of the extension rod when the second servo motor 15 or other objects are contacted, when the other end of the extension beam 8 is abutted to the next pier through the second hydraulic rod 11, the inclined plane structure is arranged at the two ends of the through groove in the sleeve beam 9, so that the non-return rod 13 can be pushed to rotate upwards to enable the reed barb to be hooked in the groove of the non-return rod 13 to achieve the effect of hooking the non-return rod 13 and cancel the non-return effect, at the moment, the first hydraulic rod can be retracted, the second hydraulic rod 11 and the third hydraulic rod 39 can extend to support the bridge girder erection machine, the guide beam 1 can be moved to the next pier through the cooperation of the first idler wheel 7 and the second idler wheel 10 through the cooperation of the gear 16 and the first rack 6 through the first servo motor 15 fixed on one side of the sleeve beam 9 to achieve the effect of moving the bridge girder erection machine, the positioning wheel 40 is clamped into the arc-shaped positioning groove in the positioning plate when the positioning wheel 40 moves to one side of the positioning plate 41, and the distance of the positioning grooves is equal to the distance of a pre-installed beam 44, and then realize sending the effect that the accurate positioning installation was realized to the location position after putting down to preinstallation roof beam 44 to play the effect that removes conveniently, saves the cost, reached the purpose that the practicality is high, the range of application is wide. Through the arrangement of the hoisting device, the bridge erecting machine has the effects of convenient hoisting and accurate positioning, through the matching arrangement of the hoisting hydraulic rod 30 and the screw rod 38, in the using process, because the hoisting rod 36 is of a two-section structure, during hoisting, the hoisting rod 36 can be placed at the bottom of the pre-installation beam 44, through the rotation of the screw rod 38 driven by the small motor 37, through the connection of the screw thread at one side far away from the small motor 37 and the screw thread at one side far away from the small motor 37 of the hoisting rod 16, the two sections of the hoisting rods 36 are connected into a whole to realize the supporting effect, and vice versa, then through the hoisting hydraulic rod 30 jacking one side of the steel wire rope 35, the effect of hoisting the pre-installation beam 44 is realized through the matching of the small hoisting wheel 32, the large hoisting wheel 33 and the auxiliary hoisting wheel 34, and due to the arrangement of the positioning device, the transmission gear 26 can be driven to rotate through the matching of the chain 24 and the transmission shaft 22 by the third servo motor 25, and then drive support frame 20 through driving rack 27 and remove in the logical inslot of locating plate 41 under the effect of removing wheel 19, realize the accurate positioning of hoist and mount board 29 through the position of control locating plate 41 through-groove to play convenient to use, the accurate effect in location, reached the purpose that the lift is steady, degree of automation is high.

It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, the use of the verb "comprise a" to define an element does not exclude the presence of another, same element in a process, method, article, or apparatus that comprises the element.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The utility model provides a bridge crane of no counter weight via hole, includes mobile device and hoist device, its characterized in that: the moving device comprises a beam erecting machine and a beam transporting vehicle, the beam erecting machine comprises a guide beam (1), a first hydraulic rod (3) is fixedly mounted at the bottom of the guide beam (1) through a cushion block (2), a guide rail (4) is fixedly mounted at the top of the guide beam (1) through an L-shaped support plate, a supporting block (5) is fixedly mounted at one side, close to the guide rail (4), of the top of the guide beam (1), a first rack (6) is fixedly mounted at the top of the guide beam (1), a first roller (7) is rotatably connected to one end of the guide beam (1), an extension beam (8) is abutted to the bottom of the guide beam (1) through the first roller (7), a sleeve beam (9) is slidably connected to one side of the extension beam (8), one end of the sleeve beam (9) is abutted to the bottom of the guide beam (1) through a second roller (10), and the extension beam (8) is slidably connected to the inside of the sleeve beam (9), one end of the extension beam (8) is fixedly provided with a connecting column (43); the beam transporting vehicle comprises moving wheels (19), a support frame (20) and pillars (21), wherein the moving wheels (19) are abutted to the top of a guide rail (4), the support frame (20) is connected to one side of the moving wheels (19) in a rotating mode, the pillars (21) are fixedly installed at the top of a guide beam (1), a transmission shaft (22) is connected to the inside of each pillar (21) in a rotating mode, a chain wheel (23) is fixedly installed at one end of the transmission shaft (22), the chain wheel (23) is connected to the output end of a third servo motor (25) in a transmission mode through a chain (24), the third servo motor (25) is fixedly installed at the top of the guide beam (1), the middle of the transmission shaft (22) is fixedly installed on a transmission gear (26), a transmission rack (27) is fixedly installed at the top of the support frame (20), and the transmission gear (26) is connected with the transmission rack (27) in a meshing mode, one side of the support frame (20) is rotatably connected with a connecting rod (28), and the other end of the connecting rod (28) is rotatably connected with a hoisting plate (29); the hoisting device comprises a hoisting hydraulic rod (30) and a hoisting frame (31), wherein the hoisting hydraulic rod (30) and the hoisting frame (31) are fixedly arranged at the bottom of the hoisting plate (29), one side of the hoisting frame (31) is rotatably connected with a small hoisting wheel (32), one side of the small hoisting wheel (32) is fixedly provided with a large hoisting wheel (33), one side of the hoisting frame (31) close to the small hoisting wheel (32) is rotatably connected with an auxiliary hoisting wheel (34), and one side of the auxiliary hoisting wheel (34) is in transmission connection with a steel wire rope (35).

2. A bridge girder erection machine without counterweight via hole according to claim (1), wherein: the bottom fixed mounting of spliced pole (43) has second hydraulic stem (11), the other end that stretches out roof beam (8) rotates through fixed plate (12) and is connected with non return pole (13), one side fixed mounting that fixed plate (12) are close to non return pole (13) has reed barb (14), the wave that leads to with non return pole (13) looks adaptation is all seted up to the both sides of cover roof beam (9), one side that cover roof beam (9) are close to first gyro wheel (7) has first servo motor (15) through motor fixed block fixed mounting.

3. A bridge girder erection machine without counterweight via hole according to claim (1), wherein: the output end of the first servo motor (15) is connected with the first rack (6) through a gear (16) in a meshed mode, one side, close to the second roller (10), of the bottom of the extension beam (8) is fixedly provided with a second servo motor (17), one side, far away from the first servo motor (15), of the top of the guide beam (1) is fixedly provided with a second rack (18), and the output end of the second servo motor (17) is connected with the second rack (18) through the gear (16) in a meshed mode.

4. A bridge girder erection machine without counterweight via hole according to claim (1), wherein: the hoisting device is characterized in that the small hoisting wheel (32) and the large hoisting wheel (33) are of a coaxial connected structure, the steel wire rope (35) is in transmission connection with one side of the small hoisting wheel (32), the large hoisting wheel (33) and the auxiliary hoisting wheel (34), one side of the steel wire rope (35) is in transmission connection with the extending end of the hoisting hydraulic rod (30), the other end of the steel wire rope (35) is in transmission connection with a hoisting rod (36), and the hoisting rod (36) is of a two-section structure.

5. A bridge girder erection machine without counterweight via hole according to claim (1), wherein: the inside of getting up jib (36) is seted up threaded hole, the one end fixed mounting that gets up jib (36) has small motor (37), the output fixed mounting of small motor (37) has screw rod (38), one side that small motor (37) were kept away from in screw rod (38) is seted up threadedly, one side sliding connection that screw rod (38) are close to small motor (37) is in the inside of getting up jib (36), the top butt of getting up jib (36) has preinstallation roof beam (44).

6. A bridge girder erection machine without counterweight via hole according to claim (1), wherein: one end fixed mounting that cover roof beam (9) is close to second gyro wheel (10) has third hydraulic stem (39), one side of connecting rod (28) is rotated and is connected with locating wheel (40), one side fixed mounting that the top of nose girder (1) is close to support frame (20) has locating plate (41), the spout has been seted up to the inside of locating plate (41), locating wheel (40) butt is in the inside of spout.

7. A bridge girder erection machine without counterweight via hole according to claim (1), wherein: the groove matched with the reed barb (14) is formed in one side of the check rod (13), the number of the second racks (18), the second servo motor (17), the sleeve beam (9) and the extension beam (8) is two, the number of the second racks, the number of the second servo motor, the sleeve beam (9) and the extension beam (8) are symmetrically distributed on two sides of the guide beam (1), the number of the first hydraulic rod (3), the second hydraulic rod (11) and the third hydraulic rod (39) is two, the first hydraulic rod and the second hydraulic rod are evenly distributed on the bottom of the guide beam (1), and the bottom of the guide beam (1) is movably connected with a pier (42).

8. A bridge girder erection machine without counterweight via hole according to claim (1), wherein: the number of the connecting rods (28) is four, the connecting rods are symmetrically distributed on two sides of the hoisting plate (29), the lengths of the first rack (6) and the second rack (18) are half of the length of the guide beam (1), the two ends of the through groove in the sleeve beam (9) are provided with inclined plane structures matched with the check rods (13), and the number of the hoisting devices is two, and the two hoisting devices are symmetrically distributed on two sides of the hoisting plate (29).

9. A bridge girder erection machine without counterweight via hole according to claim (1), wherein: the lifting plate (29) is of a U-shaped structure, the number of the positioning plates (41) is two, the positioning plates are symmetrically distributed on the top of the guide beam (1), the length of the sleeve beam (9) is half of that of the guide beam (1), the number of the supporting blocks (5) is four, the supporting blocks are evenly distributed on the top of the guide beam (1), and one side, close to the positioning plates (41), of each supporting block (5) is fixedly provided with a photoelectric sensor (45).