CN116695594A - Operation method of beam replacement equipment - Google Patents

Abstract

The embodiment of the application provides an operation method of beam changing equipment, which comprises a main beam, two auxiliary supporting legs and two main supporting legs, wherein the two auxiliary supporting legs are respectively arranged at two ends of the main beam, the auxiliary supporting legs can stretch and retract along the length direction vertical to the main beam, the two main supporting legs are respectively arranged at two ends of the main beam, and the main supporting legs can stretch and retract along the direction vertical to the main beam, and the operation method comprises the following steps: and controlling the two auxiliary supporting legs to extend and lift the main beam to the target height, controlling the two main supporting legs to extend downwards to the supporting surface to support the main beam, and controlling the movable crane trolley on the main beam to execute beam replacement action. The application provides the auxiliary supporting leg for jacking the girder, the auxiliary supporting leg is firstly used for jacking the girder in the girder replacement operation process, and the main supporting leg is controlled to support the girder after the girder is jacked, so that the problem of jacking abrasion of the main supporting leg of the existing L-shaped frame type is avoided, and the reliability of girder replacement equipment is improved.

Description

Operation method of beam replacement equipment

Technical Field

The application relates to the technical field of bridge frame replacement, in particular to an operation method of beam replacement equipment.

Background

The girder replacing equipment in the prior art generally comprises a main girder and main supporting legs connected with the main girder, wherein the main supporting legs are of an L-shaped frame structure, and the posture of the girder replacing equipment is converted by the action of the main supporting legs only, so that the action of the main supporting legs is complex, and the reliability is low. For example, in the beam replacement engineering, the main support leg stretches to lift the main beam, and in the process of vertically lifting and lifting the main beam, a larger bending moment exists in the vertical part of the main support leg, so that the abrasion of the telescopic part structure is easy to cause, the durability of equipment is poor, and the service life is short.

Disclosure of Invention

The embodiment of the application provides an operation method of beam replacement equipment, which solves the problem of jacking abrasion of the existing L-shaped frame type main support leg and improves the reliability of the beam replacement equipment.

The embodiment of the application provides the following technical scheme:

the utility model provides a trade operation method of roof beam equipment, trade roof beam equipment includes girder, two auxiliary leg and two main tributary legs, two auxiliary leg divides to be located the both ends of girder, the auxiliary leg can be along perpendicular the length direction of girder stretches out and draws back, two main tributary leg set up respectively in the both ends of girder, the main tributary leg can be along perpendicular the direction of girder stretches out and draws back, the operation method includes:

and controlling the two auxiliary supporting legs to extend and lift the main beam to the target height, controlling the two main supporting legs to extend downwards to the supporting surface to support the main beam, and controlling the movable crane trolley on the main beam to execute beam replacement action.

Optionally, the beam changing device comprises two transport trolleys, and the two auxiliary supporting legs are respectively connected with the corresponding transport trolleys;

the girder is supported by the transport trolley and moves to the position of the girder replacement hole.

Optionally, the auxiliary supporting leg is provided with an upper core disc, and the transportation trolley is provided with a lower core disc;

and in the process of transporting the main beam by the transport trolley, controlling the auxiliary supporting legs to be in a contracted state, and supporting the upper core disc of the auxiliary supporting legs on the lower core disc on the transport trolley.

Optionally, the auxiliary leg has a first leveling foot;

before the auxiliary supporting leg stretches to lift the main girder, the first leveling support leg is controlled to stretch to be supported on the supporting surface so as to level the main girder.

Optionally, during the moving process of the beam changing device and the extending and jacking process of the auxiliary supporting leg, the main supporting leg is in a retracted state, and a gap is formed between the main supporting leg and the supporting surface;

and after the auxiliary supporting legs lift the main beam to the target height, controlling the main supporting legs to stretch to be supported on the supporting surface, and controlling the auxiliary supporting legs to be separated from the supporting surface.

Optionally, after the main leg is supported on the supporting surface, the auxiliary leg is controlled to retract, and the auxiliary leg is folded so that the auxiliary leg is parallel to the main beam to avoid the movable lifting trolley on the main beam.

Optionally, the auxiliary supporting leg comprises an upper cross beam and two first multistage telescopic arms, the upper cross beam is vertically connected with the main beam, and the two first multistage telescopic arms are respectively positioned at two ends of the upper cross beam;

in the process of moving the beam changing equipment and supporting the supporting legs to lift the main beam, the first multi-stage telescopic arm is connected to the upper cross beam through two pin shafts, and the position of the first multi-stage telescopic arm is fixed;

after the main support leg extends to be supported on the supporting surface, one pin shaft is pulled out, and the auxiliary support leg is rotated, so that the auxiliary support leg is parallel to the main beam.

Optionally, the main support leg is provided with two side support frames, the two side support frames are respectively arranged at two sides of the main beam along the width direction, and the side support frames can be rotatably arranged;

in the process of moving the beam changing equipment and supporting the supporting legs to lift the main beam, controlling the side supporting frames to rotate to be close to the main beam, and reducing the width of the beam changing equipment;

the side support brackets are controlled to rotate to an unfolded state away from the main girder before the main leg is extended.

Optionally, after finishing the beam replacement operation, controlling the auxiliary supporting leg to extend and support on the supporting surface, controlling the main supporting leg to retract so as to be separated from the supporting surface, controlling the auxiliary supporting leg to retract, only supporting the auxiliary supporting leg on the transportation trolley, and driving the main beam to leave from the current beam replacement hole site by the transportation trolley.

Optionally, after the transport trolley leaves the current beam-changing hole site, the transport trolley travels to the next beam-changing hole site and performs the method of operation as claimed in claim 1.

Optionally, the operation method of the beam changing device comprises the following steps:

the main supporting leg is provided with a second leveling supporting leg;

during the extension of the main leg, the second leveling leg extends to be supported on the supporting surface

By adopting the technical scheme, the embodiment of the application has the following technical effects:

the application provides the auxiliary supporting leg for jacking the girder, the auxiliary supporting leg is firstly used for jacking the girder in the girder replacement operation process, and the main supporting leg is controlled to support the girder after the girder is jacked, so that the problem of jacking abrasion of the main supporting leg of the existing L-shaped frame type is avoided, and the reliability of girder replacement equipment is improved.

Drawings

The accompanying drawings, which are included to provide a further understanding of the application and are incorporated in and constitute a part of this specification, illustrate embodiments of the application and together with the description serve to explain the application and do not constitute a limitation on the application. In the drawings:

FIG. 1 is a schematic diagram of a beam changing device provided by an embodiment of the present application in a transportation condition;

fig. 2 is a schematic diagram of a beam changing device for executing a beam changing operation according to an embodiment of the present application;

fig. 3 is a state diagram of a lifting main beam of a beam changing device according to an embodiment of the present application;

FIG. 4 is a cross-sectional view of a main leg of a beam changing apparatus according to an embodiment of the present application;

FIG. 5 is a schematic view of a main leg of a beam changing apparatus according to an embodiment of the present application in a folded state;

FIG. 6 is a cross-sectional view of a beam changing apparatus provided by an embodiment of the present application at an auxiliary leg;

fig. 7 is a state diagram of an auxiliary leg of the beam changing device according to the embodiment of the present application supported on a bridge deck;

FIG. 8 is an enlarged view of a portion of FIG. 7;

fig. 9 is a state diagram of an auxiliary leg of a beam changing device according to an embodiment of the present application lifted to a high position;

FIG. 10 is a state diagram of a main leg of a beam changing apparatus according to an embodiment of the present application in place;

FIG. 11 is a schematic view of an auxiliary leg of a beam changing apparatus according to an embodiment of the present application in a retracted state;

fig. 12 is a state diagram of an auxiliary leg of the beam changing device according to the embodiment of the present application after being folded;

fig. 13 is a schematic perspective view of an auxiliary leg of a beam changing device according to an embodiment of the present application;

FIG. 14 is a state diagram of a leveling system of a beam changing apparatus according to an embodiment of the present application supported on a support surface;

fig. 15 is a state diagram of a telescopic arm of a head end of a beam changing device according to an embodiment of the present application being lifted;

fig. 16 is a state diagram of a middle telescopic arm of a beam changing device according to an embodiment of the present application being lifted;

fig. 17 is a schematic view of an auxiliary leg of a beam changing device provided by an embodiment of the present application in a folded state;

fig. 18 is a schematic perspective view of a crane trolley of a beam changing device according to an embodiment of the present application;

fig. 19 is a front view of a trolley of the beam changing apparatus according to the embodiment of the present application;

FIG. 20 is a partial block diagram of a trolley of a beam changing apparatus according to an embodiment of the present application;

fig. 21 is a top view of a trolley of a beam changing apparatus according to an embodiment of the present application;

fig. 22 is a schematic diagram of a matching structure of a lifting appliance and a lifting rope of a lifting trolley of a beam changing device according to an embodiment of the present application;

fig. 23 is a diagram showing a structure of a lifting rope of a lifting trolley and a simple beam body of a beam changing device according to an embodiment of the present application.

Reference numerals:

1. a main beam; 2. an auxiliary leg; 21. an upper cross beam; 22. a first multi-stage telescopic arm; 221. a telescoping arm; 221a, a guide sleeve; 221b, a connecting beam; 23. a telescopic member; 24. a jacking member; 25. a lower cross beam; 26. a balance beam; 27. a rotary hinge; 28. leveling oil cylinders; 29. supporting a lead screw; 3. a main leg; 31. an upper connecting beam; 32. a second multi-stage telescopic arm; 33. a lower connecting beam; 34. a second telescoping leg assembly; 5. a lifting trolley; 51. a hanging rack; 511. a beam connecting frame; 5111. a vertical beam; 5112. a cross beam; 512. a beam body; 5121. a sliding table; 52. a hoisting mechanism; 521. a fixed pulley assembly; 522. a movable pulley assembly; 5221. a second ear mount; 523. a hoist; 53. a lifting appliance; 531. a spreader body; 5311. a guide shaft; 532. tensioning the stretcher beam; 533. a first ear mount; 54. a hanging belt; 55. an electro-hydraulic control box; 56. a guide pulley; 57. a walking system; 58. a longitudinal running motor; 59. a drive gear; 6. a transport trolley; a. a pin shaft; b. a simply supported beam body; c. a telescoping device.

Detailed Description

In order to make the technical solutions and advantages of the embodiments of the present application more apparent, the following detailed description of exemplary embodiments of the present application is provided in conjunction with the accompanying drawings, and it is apparent that the described embodiments are only some embodiments of the present application and not exhaustive of all embodiments. It should be noted that, without conflict, the embodiments of the present application and features of the embodiments may be combined with each other.

Example 1

Referring to fig. 1 to 23, a first embodiment of the present application provides a beam changing apparatus, including: a main beam 1, two auxiliary legs 2, two transport trolleys 6 and two main legs 3. The two auxiliary supporting legs 2 are respectively arranged at two ends of the main beam 1, and the auxiliary supporting legs 2 can stretch and retract along the length direction vertical to the main beam 1. The two auxiliary legs 2 can be supported on the two transport carriages 6, respectively. The two main support legs 3 are respectively arranged at two ends of the main girder 1, and the main support legs 3 can stretch and retract along the direction vertical to the main girder 1. The beam changing device is provided with a transportation working condition and a beam supporting working condition, the auxiliary supporting leg 2 is supported on the transportation trolley 6 under the transportation working condition, the main supporting leg 3 is separated from the supporting surface, the main supporting leg 3 is supported on the supporting surface under the beam supporting working condition, and the auxiliary supporting leg 2 is separated from the supporting surface.

The main support legs 3 are used for supporting two ends of a temporary hole bridge of a bridge to be replaced in the beam replacement construction process and are main stress support legs, so that safety of the temporary hole bridge is guaranteed when the beam is replaced, the auxiliary support legs 2 are supported on a transportation trolley, and bearing equipment is transported on a railway.

When the girder replacement equipment lifts the girder 1, the girder 1 is lifted through the auxiliary supporting legs 2, and after the girder 1 is lifted, the main supporting legs 3 are adjusted, so that the main supporting legs 3 support the girder 1, and the girder replacement operation of the follow-up crane trolley 5 is facilitated. The application provides an auxiliary supporting leg 2 for jacking a main beam 1, which avoids the problem of jacking abrasion of the existing L-shaped frame-type main supporting leg 3.

The auxiliary leg 2 has a first multi-stage telescopic arm 22, the main leg 3 has a second multi-stage telescopic arm 32, and the vertical distance between the fulcrum of the auxiliary leg 2 and the first multi-stage telescopic arm 22 is smaller than the vertical distance between the fulcrum of the main leg 3 and the second multi-stage telescopic arm 32.

The fulcrum refers to the position where the auxiliary leg 2 or the main leg 3 is supported on the supporting surface, and the supporting surface can be a bridge deck. In the embodiment of the application, the vertical distance between the supporting point of the auxiliary supporting leg 2 and the first multi-stage telescopic arm 22 is designed to be smaller than the vertical distance between the supporting point of the main supporting leg 3 and the second multi-stage telescopic arm 32. It should be noted that the vertical distance from the fulcrum to the telescopic arm is referred to herein as a comparison of the supporting states of the auxiliary leg 2 and the main leg 3, respectively. The arrangement is such that the bending moment experienced by the auxiliary leg 2 is substantially less than the bending moment experienced by the main leg 3 when subjected to the same load (as when supporting a main beam) as compared to the main leg 3, thereby significantly reducing the telescopic wear of the auxiliary leg 2 during lifting. Compared with the related design, the main support leg is directly utilized to lift the main beam, and the main support leg is subjected to larger bending moment in the lifting process, so that the main support leg is greatly abraded in a telescopic way.

In addition, according to the scheme of the embodiment of the application, the auxiliary supporting legs replace the main supporting legs to lift the main beam, and the main supporting legs are not required to be arranged on the transportation trolley, but can be hung, so that the space on the transportation trolley can be fully utilized, the overrun of the whole beam changing equipment with long distance can be effectively avoided, and the structural design of the main supporting legs is facilitated.

In one possible embodiment, see fig. 1, the main leg 3 is located between two of the auxiliary legs 2. Two auxiliary supporting legs 2 are positioned at two ends of the main beam 1, and two main supporting legs 3 are positioned at the inner position of the main beam 1, so that the auxiliary supporting legs 2 are conveniently supported on the transport trolley 6.

In a possible embodiment, see fig. 1 and 2, the auxiliary leg 2 is connected to the main beam 1 in a reversible manner, and a trolley 5 is movably arranged on the main beam 1, and in the girder-erecting condition, the auxiliary leg 2 is turned parallel to the main beam 1 to avoid the trolley 5.

In this embodiment, in the girder erection engineering, the auxiliary supporting leg 2 can be folded to be parallel to the girder 1, and is folded to be flush with the girder 1 in a rotating manner, so that the trolley 5 arranged on the girder 1 is avoided, and the trolley 5 can travel along the girder 1 to a girder feeding position. For example, the main beam 1 has a guide rail on its underside for the trolley 5 to travel, and the auxiliary leg 2 is folded over and is at least higher than this guide rail.

In one possible embodiment, referring to fig. 6 and 13 to 17, the auxiliary leg 2 comprises: an upper cross beam 21, a telescopic member 23 and two first multi-stage telescopic arms 22. The upper beam 21 is vertically connected to the main beam 1, two first multi-stage telescopic arms 22 are respectively located at two ends of the upper beam along the length direction, and the first multi-stage telescopic arms 22 are connected to the upper beam 21 through at least two pin shafts a. The telescopic part 23 is connected to the upper cross beam or main beam 1, and the telescopic part 23 is in transmission connection with the first multi-stage telescopic arm 22. Under the girder erecting working condition, only one pin shaft a is connected with the upper cross beam and the first multi-stage telescopic arm 22, and the telescopic part 23 stretches or shortens to drive the first multi-stage telescopic arm 22 to turn over to be parallel to the main girder 1.

In a possible embodiment, two first connection lugs are respectively disposed at two ends of the upper beam 21, and the two first connection lugs are respectively disposed at two sides of the upper beam along the width direction, two second connection lugs are disposed at the end of the first multi-stage telescopic arm 22, the two second connection lugs are respectively connected with corresponding first connection lugs on the same end of the upper beam through a pin shaft a, and at least one pin shaft a is detachably disposed.

In the supporting state, the auxiliary supporting leg 2 is connected to the upper cross beam through the two pin shafts a, and the arrangement of the two pin shafts a can resist the torque of the upper cross beam in the process that the auxiliary supporting leg 2 lifts the main beam 1. When the auxiliary support leg 2 needs to be turned over after the main girder 1 is jacked, the next pin shaft a can be disassembled, the auxiliary support leg 2 is in a rotatable state, and the auxiliary support leg 2 can be driven to swing through the telescopic component 23. The telescopic member may be a telescopic cylinder.

The first multi-stage telescopic arm 22 comprises a plurality of telescopic arms 221, two adjacent telescopic arms 221 are slidably connected, the telescopic arm at the head end of the first multi-stage telescopic arm 22 is connected to the upper cross beam 21 through a pin shaft a, and the telescopic component is in transmission connection with the telescopic arm at the head end. The first multi-stage telescoping arm 22 is nested with a plurality of telescoping arms.

The auxiliary leg 2 comprises a lifting part 24, and the lifting part 24 can drive each telescopic arm to move in a telescopic way. The telescopic arms in the extending state in the telescopic arms can be fixedly connected with the adjacent telescopic arms through locking pieces so as to keep the extending state.

Referring to fig. 15 and 16, the telescopic arms include two guide sleeves 221a, and two guide sleeves 221a of one of the adjacent telescopic arms 221 are slidably coupled to the other guide sleeve 221a, respectively. The support stability of the auxiliary leg 2 is improved by providing two guide sleeves 221 a. The two guide sleeves 221a are integrally connected and can be lifted and lowered synchronously.

The telescopic arm 221 includes a connecting beam 221b connected to two guide sleeves 221a, and the movable end of the lifting member 24 is selectively connected to any one of the connecting beams 221b to drive the telescopic arm to move telescopically. The bridge 221b serves to connect both guide sleeves 221a, while the bridge 221b also provides a fulcrum so that the lifting member 24 can be connected to the bridge 221b. The jacking component 24 can be a telescopic oil cylinder, and the telescopic end of the telescopic oil cylinder can be connected to different connecting beams 221b through a pin shaft a.

Taking the first multi-stage telescopic arm 22 as an example, the three telescopic arms 221 include an upper telescopic arm, a middle telescopic arm and a lower telescopic arm, respectively, the three telescopic arms 221 are. In the extension process of the side expansion bracket, the jacking component 24 firstly jacks up the upper expansion arm (namely, the expansion arm at the head end of the first multi-stage expansion arm 22), then connects and fixes the upper expansion arm and the middle expansion arm, the jacking component 24 retracts, and then jacks up the middle expansion arm, and connects and fixes the middle expansion arm and the lower expansion arm.

The jacking member 24 is disposed on a trailing telescopic arm (lower telescopic arm) of the first multi-stage telescopic arm 22, and the jacking member 24 is disposed between two guide sleeves 221a of the trailing telescopic arm. Thus, each telescopic arm can be stably jacked in the telescopic process of the jacking component 24, and each telescopic arm cannot be inclined in the jacking process.

Optionally, the auxiliary supporting leg 2 of the beam changing device includes a lower beam 25, two first multi-stage telescopic arms 22 are both connected to the lower beam 25, and the lower beam 25 is provided with an upper core disc, and the upper core disc can be connected to or separated from a lower core disc on the transport trolley 6. When the upper core plate is supported on the lower core plate, the auxiliary supporting leg 2 can be stably in a vertical state without being inclined, and when the auxiliary supporting leg is retracted, the upper core plate can be separated from the lower core plate, and the auxiliary supporting leg 2 can be conveniently folded at the moment. The upper core plate and the lower core plate are structures which can be common on a train, for example, and belong to the prior art, and the structures of the upper core plate and the lower core plate are not repeated.

The auxiliary leg 2 of the beam changing apparatus comprises a leveling system connected to the lower cross beam 25, the leveling system having a first telescopic leg assembly. Referring to fig. 14, when the auxiliary leg 2 is to be supported on a support surface, the adjustable first telescopic leg assembly is extendably supported on the support surface. Before the main beam 1 is lifted, the auxiliary supporting legs 2 need to be supported on a supporting surface and level the main beam 1, so that the main beam 1 can be lifted conveniently and stably. The leveling system is arranged on both sides of the lower cross beam 25 and has the functions of transverse and longitudinal adjustment.

Further, the leveling system further comprises a balance beam 26 and a swivel hinge 27, said balance beam 26 being connected to said lower cross beam 25 by means of the swivel hinge 27. The first telescopic support leg assembly comprises a leveling oil cylinder 28 and a supporting screw rod 29, wherein the leveling oil cylinder 28 and the supporting screw rod 29 are connected to the balance beam 26, and the leveling oil cylinder 28 and the supporting screw rod 29 can move in a telescopic mode along the direction perpendicular to the balance beam 26 so as to level the main beam 1. Specifically, the leveling system located at the same side of the main beam 1 in the width direction can realize the transverse leveling of the lower cross beam 25 and the main beam 1 through the extension or retraction of the first telescopic leg assembly; the leveling systems arranged on both sides of the same lower cross beam 25 can realize the longitudinal leveling of the main beam 1, namely the leveling along the length direction of the main beam 1 through the extension or retraction of the first telescopic supporting leg assembly.

The main support leg 3 comprises two side support frames, the two side support frames are respectively arranged on two sides of the main beam 1 along the width direction, the two side support frames are connected to the main beam 1, the side support frames are rotatably arranged, the rotation axis of each side support frame is perpendicular to the main beam 1, and the side support frames can rotate around the rotation axis to be close to or far away from the main beam 1.

In the embodiment of the application, the main leg 3 has a folding function, and the auxiliary leg 2 has a rotating folding function. After folding, as shown in fig. 5, the main leg 3 is limited to meet the railway transportation limit. The two auxiliary legs 2 are supported on two transport carriages 6 so that they can be transported on the railway.

Under the transportation working condition, the beam changing equipment is limited in the railway transportation limit, and can run on the railway without limitation. Under the girder erecting working condition, the main support legs 3 are supported at the end parts of the bridge near the holes, so that force transmission stress is more reasonable and safer.

Referring to fig. 4 and 5, the main support leg 3 includes an upper connecting beam 31, the upper connecting beam 31 is connected to the main beam 1, the upper connecting beam 31 extends out of two sides of the main beam 1 along the width direction, and two side support frames are respectively rotatably connected to two ends of the upper connecting beam 31. The main support leg 3 further comprises a lower connecting beam 33, the two side support frames are respectively rotatably connected to two ends of the lower connecting beam 33, and a second telescopic support leg assembly 34 is arranged on the lower connecting beam 33.

After the main beam 1 is lifted, the second telescopic leg assembly 34 extends out and is supported on the supporting surface during the extension of the main leg 3. The second telescopic leg assembly 34 may include a leveling cylinder 28 and a supporting screw 29, wherein the leveling cylinder 28 and the supporting screw 29 are connected to the balance beam 26, and the leveling cylinder 28 and the supporting screw 29 can move telescopically in a direction perpendicular to the balance beam 26 to stably support the main beam 1.

Example two

Referring to fig. 18 to 23, a trolley 5 of a beam changing apparatus according to a second embodiment of the present application will be described in detail, the trolley 5 including: a hanger 51, a lifting mechanism 52 and a lifting appliance 53. The hanger 51 is used for being movably connected to the main beam 1 of the beam changing device, the hanger 51 comprises a beam connecting frame 511 and two beam bodies 512, the two beam bodies 512 are arranged at intervals, each beam body 512 is provided with a top surface and a side surface connected with the top surface, the beam connecting frames 511 are respectively connected with the top surfaces of the two beam bodies, and a sliding table 5121 is arranged on the side surface. The hoisting mechanism 52 comprises a fixed pulley assembly 521 and a movable pulley assembly 522 connected to the fixed pulley assembly 521, wherein the fixed pulley assembly 521 is disposed between the two beam bodies 512, and the fixed pulley assembly 521 is slidably connected to the sliding table 5121. A spreader is connected to the travelling block assembly 522.

In the embodiment of the present application, the fixed pulley assembly 521 is not slidably supported on the top surface of the beam body, but is sunk inside the hanger 51: the sliding table 5121 is arranged on the side surface of the beam body, and the fixed pulley component 521 is slidably supported on the sliding table 5121, so that the fixed pulley component 521 is prevented from being blocked by the beam connecting frame 511, the transverse moving space of the fixed pulley component 521 is fully increased under the condition of limited external dimensions, and the requirement of a curve beam can be met. Here, a sliding table 5121 may be provided on the inner side surfaces of the two beam bodies 512, that is, the opposite surfaces, such that the fixed sheave assembly 521 is slidably supported on the sliding table 5121.

The trolley 5 further includes a drive system, a hoist 523, a guide sheave 56, a traveling system 57, an electro-hydraulic control box 55, and the like. One end of the hoist rope is wound around the hoist 523, and the hoist rope is wound around the guide pulley 56 and then extended to the fixed pulley assembly 521 and the movable pulley assembly 522. The hoist 523 winds or releases the hoist rope to raise and lower the traveling block assembly 522. The traveling system 57 may be disposed on the hanger 51, and the traveling system 57 may have rollers that may be supported at corresponding portions of the main beam. The driving system may include a longitudinal running motor 58 and a driving gear 59, where the longitudinal running motor 58 is connected to the driving gear 59, and the driving gear 59 is meshed with a rack on the main beam, and the longitudinal running motor 58 drives the driving gear 59 to rotate, so as to drive the trolley 5 to run along the main beam. The electro-hydraulic control box 55 is used for providing hydraulic energy and electric energy for various oil cylinders, motors and other components.

In one possible embodiment, the sliding table 5121 has an upper table surface, the upper table surface is located below the top surface of the beam body, the upper table surface intersects with the side surfaces of the beam body, the fixed pulley assembly 521 has a first housing, the first housing is limited between the side surfaces of the two beam bodies, and two sides of the first housing are slidably supported on the upper table surfaces of the two beam bodies, respectively.

The beam connecting frame 511 comprises two vertical beams 5111, wherein the two vertical beams 5111 are respectively connected to top surfaces of the two beam bodies, and the sliding table 5121 extends from one side of the vertical beam 5111 to the other side of the vertical beam 5111 or to the other side close to the vertical beam 5111 along the extending direction of the beam bodies. The vertical beam 5111 is connected to the top surface, and does not interfere with the housing of the fixed pulley assembly 521 connected to the sliding table 5121, and the fixed pulley assembly 521 can move to the inner side of the vertical beam 5111 and even pass through the vertical beam 5111, so that the lateral movement amount is significantly increased.

In one possible embodiment, a connection beam (not shown) is connected between the two beam bodies 512, and the sliding table 5121 extends to the connection beam. The connecting beam connects the two beam bodies 512, enhancing the structural strength of the hanger 51. The end of the ramp 5121 extends to the connecting beam providing the maximum traversing space for a given pulley assembly 521.

The trolley 5 comprises a telescopic device c, one end of which is hinged to the beam connecting frame 511, and the other end of which is hinged to the fixed pulley assembly 521. The telescoping device c telescopes to drive the fixed sheave assembly 521 to translate along the beam 512.

The telescopic device c may be a telescopic cylinder or an electric push rod, the beam connecting frame 511 may include two vertical beams 5111 and a cross beam 5112 connected to the two vertical beams 5111, one end of the telescopic device c may be hinged to the cross beam, and the other end of the telescopic device c is hinged to the housing of the fixed pulley assembly 521.

The trolley 5 may comprise two coupling beams 511 and two fixed pulley assemblies 521, the two fixed pulley assemblies 521 being synchronously movable along the beam 512, respectively, driven by respective telescopic means c.

In one possible embodiment, the hanger 53 is provided with a first ear mount 533 and the movable sheave assembly 522 is provided with a second ear mount 5221. The first ear mount 533 and the second ear mount 5221 are detachably connected by a pin a. In the embodiment of the application, a movable pulley assembly of the lifting trolley and a lifting appliance are separately designed, and a pin shaft a quick-dismantling structure is adopted.

A lifting rope is arranged between the movable pulley assembly and the fixed pulley assembly, the lifting rope can be a multi-multiplying-power steel wire rope set, a quick-dismantling structure design is arranged between the movable pulley assembly 522 and the lifting appliance, and a pin shaft a is arranged.

The trolley 5 comprises a sling 54, the sling 53 comprises a sling body 531 and a tensioning stretcher beam 532, the sling body 531 is connected to the movable pulley assembly 522, the sling 54 is connected to the tensioning stretcher beam 532, and a clasping space is formed between the sling 54 and the sling body 531. The tension beam 532 is connected to the hanger main body 531, and the tension beam 532 can be moved to change a position with respect to the hanger main body 531 to adjust the size of the clasping space. By arranging the enclasping space between the adjustable suspender 54 and the hanging beam main body, the suspender 54 is ensured to be in a tensioning state, and the problem of lifting quantity loss caused by incapability of tensioning the suspender 54 is solved.

The tension stretcher 532 has a through slot, the end of the sling 54 can penetrate the stretcher 54 and the sling 54 can be connected to the tension stretcher 532 by the sling 54 bolt, the end of the sling 54 has a strip slot, and the sling 54 bolt can be arranged through the strip slot. The tension boom 532 is disposed on the upper surface of the spreader body 531.

The hanger main body 531 has a guide shaft 5311, the tensioning stretcher 532 has a guide hole, the tensioning stretcher 532 is sleeved on the guide shaft 5311 through the wire guide hole, and the tensioning stretcher 532 can translate along the guide shaft 5311 to increase or decrease the distance between the tensioning stretcher 532 and the hanger main body 531.

The tension stretcher 532 has a through thread groove, the screw is screwed to the thread groove, and the screw abuts against the hanger main body 531, and the distance between the hanger main body 531 and the tension stretcher 532 can be adjusted by rotating the screw. The provision of a screw facilitates lifting or lowering of tension boom 532 to adjust the tightness of harness 54.

The trolley 5 further comprises a spacer, the spacer is located between the hanger main body 531 and the tensioning stretcher 532, the guide column is provided with external threads, one end of the guide column extending out of the thread groove is in threaded connection with a nut, and the nut is tightly propped against the tensioning stretcher 532.

The beam replacement operation process by adopting the trolley 5 is as follows:

and S100, presetting the lifting appliance on the to-be-replaced simply supported beam body b.

Step S200, tensioning the lifting appliance 53 and the lifting belt 54, wherein the tensioning process is to screw a screw rod, the tensioning stretcher 532 can be lifted upwards until the lifting belt 54 is in a tightening state, then a gasket is inserted between the tensioning stretcher 532 and the lifting appliance main body 531, so that the tensioning stretcher 532 and the lifting appliance main body 531 keep a fixed distance, finally, nuts are screwed on external threads of the guide posts, and the tensioning stretcher 532 and the lifting appliance main body 531 are fastened and fixed.

And step S300, after the beam replacement equipment reaches a beam replacement bridge position, the lifting trolley 5 puts down the movable pulley assembly 522, connects the movable pulley assembly 522 with a lifting appliance, and the winch 523 runs, so that the simply supported beam body b can be lifted.

Example III

An embodiment III of the present application provides a method for operating a beam changing device in the foregoing embodiment, where the beam changing device includes a main beam 1, two auxiliary legs 2, and two main legs 3, the two auxiliary legs 2 are separately disposed at two ends of the main beam 1, the auxiliary legs 2 can stretch along a longitudinal direction perpendicular to the main beam 1, the two main legs 3 are respectively disposed at two ends of the main beam 1, and the main legs 3 can stretch along a direction perpendicular to the main beam 1, the method includes:

and controlling the two auxiliary supporting legs 2 to stretch and lift the main beam 1 to a target height, controlling the two main supporting legs 3 to stretch downwards to a supporting surface so as to support the main beam 1, and controlling the movable crane trolley 5 on the main beam 1 to execute beam replacement action.

The application provides an auxiliary supporting leg 2 for jacking a main beam 1, wherein in the beam replacement operation process, the main beam 1 is jacked by the auxiliary supporting leg 2, and in the jacking process, main supporting legs arranged at two ends of the main beam 1 are jacked; after the main beam 1 is lifted, the main support legs 3 are controlled to extend downwards to the supporting surface, the main beam 1 is supported by the main support legs 3, and at the moment, the auxiliary support legs 2 are controlled to retract to the initial position. Because the vertical distance between the supporting point of the auxiliary supporting leg 2 and the first multi-stage telescopic arm 22 in the beam changing device is smaller than the vertical distance between the supporting point of the main supporting leg 3 and the second multi-stage telescopic arm 32, the operation method of the beam changing device in the embodiment uses the auxiliary supporting leg 2 to lift the main beam 1, thereby avoiding the problem of lifting abrasion of the main supporting leg 3 of the existing L-shaped frame type and improving the reliability of the beam changing device.

The beam changing device comprises two transport trolleys 6, and the two auxiliary supporting legs 2 are respectively connected with the corresponding transport trolleys 6. The girder 1 is supported by a transport trolley 6 and moves to a girder replacement hole site.

The auxiliary supporting leg 2 is provided with an upper core disc, the transportation trolley 6 is provided with a lower core disc, the auxiliary supporting leg 2 is controlled to be in a contracted state in the process of transporting the main beam 1 by the transportation trolley 6, and the upper core disc of the auxiliary supporting leg 2 is supported on the lower core disc on the transportation trolley 6.

The auxiliary leg 2 is provided with a first leveling foot, and the first leveling foot is controlled to be stretched and supported on a supporting surface before the auxiliary leg 2 is stretched and lifted up on the main beam 1 so as to level the main beam 1. During the movement of the girder changing device and during the extension of the auxiliary leg 2 to lift up the girder 1, the main leg 3 is in a retracted state, and the main leg 3 and the support surface have a gap. After the auxiliary support legs 2 lift the main beam 1 to the target height, the main support legs 3 are controlled to stretch to be supported on the supporting surface, and the auxiliary support legs 2 are controlled to be separated from the supporting surface.

After the main support leg 3 is supported on the support surface, the auxiliary support leg 2 is controlled to retract, and the auxiliary support leg 2 is folded so that the auxiliary support leg 2 is parallel to the main beam 1 to avoid the movable trolley 5 on the main beam 1.

The auxiliary supporting leg 2 comprises an upper cross beam and two first multistage telescopic arms 22, wherein the upper cross beam is vertically connected with the main beam 1, and the two first multistage telescopic arms 22 are respectively positioned at two ends of the upper cross beam. In the process of moving the beam changing equipment and lifting the main beam 1 by the auxiliary supporting leg 2, the first multi-stage telescopic arm 22 is connected to the upper cross beam through two pin shafts a, and the position of the first multi-stage telescopic arm 22 is fixed. After the main leg 3 is extended to be supported on the supporting surface, one pin a is pulled out, and the auxiliary leg 2 is rotated so that the auxiliary leg 2 is parallel to the main beam 1.

The main leg 3 has two side support frames, two the side support frames set up respectively in girder 1 along width direction's both sides, the rotatable setting of side support frame. And in the process of moving the beam changing equipment and lifting the main beam 1 by the auxiliary supporting legs 2, the side supporting frames are controlled to rotate to be close to the main beam 1, so that the width of the beam changing equipment is reduced. The main leg 3 limits meet the railway transportation limits. The side support frames are controlled to rotate to a deployed state away from the main girder 1 before the main leg 3 is extended.

After the beam replacement operation is finished, the auxiliary supporting leg 2 is controlled to extend and support on the supporting surface, the main supporting leg 3 is controlled to retract so as to be separated from the supporting surface, the auxiliary supporting leg 2 is controlled to retract, the auxiliary supporting leg 2 is only supported on the transport trolley 6, and the transport trolley 6 drives the main beam 1 to leave from the current beam replacement hole site. If the current beam replacement hole position is the last, the transportation trolley 6 drives away from the bridge. If there are more beam positions to be replaced, after the transport carriage 6 leaves the current beam replacement hole site, the transport carriage 6 proceeds to the next beam replacement hole site and the working method according to claim 1 is performed.

The main leg 3 is provided with a second leveling leg which extends out to be supported on a supporting surface during the extension of the main leg 3

The following provides an operation flow of the beam changing device, which comprises the following steps:

step S1, referring to fig. 7 and 8, a main beam 1 is supported by a pair of transport trolleys 6 and moved to a beam replacement hole site, two auxiliary supporting legs 2 on the main beam 1 are supported on the transport trolleys 6, and two main supporting legs 3 connected to the main beam 1 are in a contracted state;

step S2, referring to fig. 3 and 9, controlling the auxiliary support leg 2 to extend and lift the main girder 1 to a target height;

step S3, referring to FIG. 10, controlling the main support leg 3 to extend to be supported on the supporting surface; for example, the main support leg 3 can be supported at the end part of the temporary bridge of the bridge to be replaced, so that the temporary bridge is safe when the bridge is replaced;

step S4, referring to FIG. 11 and FIG. 12, the auxiliary supporting leg 2 is controlled to shrink and fold to be parallel to the main beam 1, referring to FIG. 2, the trolley 5 on the main beam 1 is controlled to execute beam replacement;

s5, finishing beam replacement operation;

step S6, controlling the auxiliary supporting leg 2 to rotate to be perpendicular to the main beam 1;

step S7, controlling the auxiliary supporting leg 2 to stretch so as to be supported on a supporting surface;

step S8, the main support legs 3 retract to be separated from the supporting surface;

step S9, the auxiliary supporting legs 2 are contracted, and the auxiliary supporting legs 2 are only supported on the transport trolley 6;

and S10, supporting and moving the main beam 1 to another beam replacement hole site through a pair of transport trolleys 6.

In describing the present application and its embodiments, it should be understood that the orientation or positional relationship indicated by the terms "top", "bottom", "height", etc. are based on the orientation or positional relationship shown in the drawings, are merely for convenience of description and simplification of the description, and are not indicative or implying that the apparatus or element in question must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as limiting the present application.

In the present application and its embodiments, unless explicitly specified and limited otherwise, the terms "disposed," "mounted," "connected," "secured," and the like are to be construed broadly and may be, for example, fixedly connected, detachably connected, or integrated; the device can be mechanically connected, electrically connected and communicated; can be directly connected or indirectly connected through an intermediate medium, and can be communicated with the inside of two elements or the interaction relationship of the two elements. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art according to the specific circumstances.

In the present application and its embodiments, unless explicitly specified and limited otherwise, a first feature "above" or "below" a second feature may include both the first and second features being in direct contact, and may also include both the first and second features not being in direct contact but being in contact with each other by way of additional features therebetween. Moreover, a first feature being "above," "over" and "on" a second feature includes the first feature being directly above and obliquely above the second feature, or simply indicating that the first feature is higher in level than the second feature. The first feature being "under", "below" and "beneath" the second feature includes the first feature being directly above and obliquely above the second feature, or simply indicating that the first feature is less level than the second feature.

The above disclosure provides many different embodiments, or examples, for implementing different structures of the application. The foregoing description of specific example components and arrangements has been presented to simplify the present disclosure. They are, of course, merely examples and are not intended to limit the application. Furthermore, the present application may repeat reference numerals and/or letters in the various examples, which are for the purpose of brevity and clarity, and which do not themselves indicate the relationship between the various embodiments and/or arrangements discussed. In addition, the present application provides examples of various specific processes and materials, but one of ordinary skill in the art will recognize the application of other processes and/or the use of other materials.

While preferred embodiments of the present application have been described, additional variations and modifications in those embodiments may occur to those skilled in the art once they learn of the basic inventive concepts. It is therefore intended that the following claims be interpreted as including the preferred embodiments and all such alterations and modifications as fall within the scope of the application.

It will be apparent to those skilled in the art that various modifications and variations can be made to the present application without departing from the spirit or scope of the application. Thus, it is intended that the present application also include such modifications and alterations insofar as they come within the scope of the appended claims or the equivalents thereof.

Claims (11)

1. The utility model provides a trade operation method of roof beam equipment, its characterized in that trades roof beam equipment includes girder, two auxiliary leg and two main tributary legs, two auxiliary leg divide to be located the both ends of girder, the auxiliary leg can be along perpendicular the length direction of girder stretches out and draws back, two main tributary leg set up respectively in the both ends of girder, the main tributary leg can be along perpendicular the direction of girder stretches out and draws back, the operation method includes:

and controlling the two auxiliary supporting legs to extend and lift the main beam to the target height, controlling the two main supporting legs to extend downwards to the supporting surface to support the main beam, and controlling the movable crane trolley on the main beam to execute beam replacement action.

2. A method of operating a beam changing apparatus according to claim 1, characterized in that the beam changing apparatus comprises two transport carriages, the two auxiliary legs being connected to the respective transport carriages;

the girder is supported by the transport trolley and moves to the position of the girder replacement hole.

3. The method of claim 2, wherein the auxiliary leg has an upper core plate and the transport carriage has a lower core plate;

and in the process of transporting the main beam by the transport trolley, controlling the auxiliary supporting legs to be in a contracted state, and supporting the upper core disc of the auxiliary supporting legs on the lower core disc on the transport trolley.

4. A method of operating a beam changing apparatus according to claim 1, wherein the auxiliary leg has a first leveling foot;

before the auxiliary supporting leg stretches to lift the main girder, the first leveling support leg is controlled to stretch to be supported on the supporting surface so as to level the main girder.

5. The method of claim 1, wherein the main leg is in a retracted state during movement of the beam changing apparatus and during extension of the auxiliary leg to raise the main beam, the main leg and the support surface having a gap;

and after the auxiliary supporting legs lift the main beam to the target height, controlling the main supporting legs to stretch to be supported on the supporting surface, and controlling the auxiliary supporting legs to be separated from the supporting surface.

6. The method of claim 5, wherein after the main leg is supported on the support surface, the auxiliary leg is controlled to retract and the auxiliary leg is folded such that the auxiliary leg is parallel to the main beam to avoid a movable trolley on the main beam.

7. The method of claim 6, wherein the auxiliary leg comprises an upper cross beam and two first multi-stage telescopic arms, the upper cross beam is vertically connected to the main beam, and the two first multi-stage telescopic arms are respectively positioned at two ends of the upper cross beam;

in the process of moving the beam changing equipment and supporting the supporting legs to lift the main beam, the first multi-stage telescopic arm is connected to the upper cross beam through two pin shafts, and the position of the first multi-stage telescopic arm is fixed;

after the main support leg extends to be supported on the supporting surface, one pin shaft is pulled out, and the auxiliary support leg is rotated, so that the auxiliary support leg is parallel to the main beam.

8. The method according to claim 1, wherein the main leg has two side support frames, the two side support frames are respectively disposed on both sides of the main beam in the width direction, and the side support frames are rotatably disposed;

in the process of moving the beam changing equipment and supporting the supporting legs to lift the main beam, controlling the side supporting frames to rotate to be close to the main beam, and reducing the width of the beam changing equipment;

the side support brackets are controlled to rotate to an unfolded state away from the main girder before the main leg is extended.

9. The method according to claim 1, wherein after the beam replacement operation is completed, the auxiliary support leg is controlled to extend and support on the supporting surface, the main support leg is controlled to retract to be separated from the supporting surface, the auxiliary support leg is controlled to retract, the auxiliary support leg is only supported on the transportation trolley, and the transportation trolley drives the main beam to leave the current beam replacement hole site.

10. A method of operating a beam changing apparatus according to claim 9, characterized in that after the transport trolley leaves the current beam changing hole site, the transport trolley travels to the next beam changing hole site and performs the method of operation according to claim 1.

11. A method of operating a beam changing apparatus according to claim 1, comprising the steps of:

the main supporting leg is provided with a second leveling supporting leg;

the second leveling leg extends to rest on a support surface during extension of the main leg.