A method for operating a beam replacement device

Abstract

The embodiment of the application provides a working method of a beam replacing device, the beam replacing device comprising a main beam, two auxiliary legs and two main legs, the two auxiliary legs are arranged at two ends of the main beam, the auxiliary legs can be extended and retracted along a length direction perpendicular to the main beam, the two main legs are arranged at the two ends of the main beam respectively, and the main legs can be extended and retracted along a direction perpendicular to the main beam, and the working method comprises the following steps: controlling the two auxiliary legs to extend and lift the main beam to a target height, controlling the two main legs to extend downward to a supporting surface to support the main beam, and controlling a movable lifting trolley on the main beam to perform a beam replacing action. The auxiliary legs of the application lift the main beam, the main beam is first lifted by the auxiliary legs in the beam replacing working process, the main legs are controlled to support the main beam after the main beam is lifted, and the existing wear problem of the L-shaped frame type main leg lifting is avoided, and the reliability of the beam replacing device is improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of bridge frame replacement, and particularly to a method for operating a beam replacement device. BACKGROUND

[0002] In the prior art, a beam replacement device usually comprises a main beam and main legs connected to the main beam, the main legs are usually L-shaped frame structures, and the posture conversion process of the beam replacement device only relies on the action of the main legs. The action of the main legs is complex and has low reliability. For example, in a beam replacement project, the main legs are elongated to lift the main beam, and in the process of lifting the main beam in the vertical direction, a large bending moment exists in the vertical part, which easily causes wear of the structure of the telescopic part, poor durability of the device, and short service life. SUMMARY

[0003] The embodiments of the present application provide a method for operating a beam replacement device, which solves the problem of wear caused by the L-shaped frame type main leg lifting and improves the reliability of the beam replacement device.

[0004] The embodiments of the present application provide the following technical solutions:

[0005] A method for operating a beam replacement device, the beam replacement device comprising a main beam, two auxiliary legs and two main legs, the two auxiliary legs being arranged at two ends of the main beam, the auxiliary legs being capable of being telescoped along a length direction perpendicular to the main beam, the two main legs being arranged at the two ends of the main beam, the main legs being capable of being telescoped along a direction perpendicular to the main beam, and the method comprising:

[0006] controlling the two auxiliary legs to be elongated to lift the main beam to a target height, controlling the two main legs to be elongated downward to a support surface to support the main beam, and controlling a movable hoist trolley on the main beam to perform a beam replacement action.

[0007] Optionally, the beam replacement device comprises two transport trolleys, and the two auxiliary legs are connected to the corresponding transport trolleys, respectively.

[0008] The main beam is supported by the transport trolleys and moved to a beam replacement hole position.

[0009] Optionally, the auxiliary leg has an upper core disc, and the transport trolley is provided with a lower core disc.

[0010] In the process of transporting the main beam by the transport trolleys, the auxiliary legs are controlled to be in a contracted state, and the upper core disc of the auxiliary leg is supported on the lower core disc of the transport trolley.

[0011] Optionally, the auxiliary leg has a first leveling foot.

[0012] Before the auxiliary leg is elongated to lift the main beam, the first leveling foot is controlled to be elongated and supported on the support surface to level the main beam.

[0013] Optionally, during the moving of the girder replacement device and the process of the auxiliary legs lifting the main girder, the main legs are in a retracted state, and the main legs and the support surface have a gap;

[0014] After the auxiliary legs lift the main girder to the target height, the main legs are controlled to extend to support the support surface, and the auxiliary legs are controlled to disengage from the support surface.

[0015] Optionally, after the main legs support the support surface, the auxiliary legs are controlled to retract and fold, so that the auxiliary legs are parallel to the main girder to avoid the movable lifting trolley on the main girder.

[0016] Optionally, the auxiliary legs include an upper cross beam and two first multi-stage telescopic arms, the upper cross beam is connected to the main girder vertically, and the two first multi-stage telescopic arms are respectively located at two ends of the upper cross beam.

[0017] During the moving of the girder replacement device and the process of the auxiliary legs lifting the main girder, the first multi-stage telescopic arms are connected to the upper cross beam through two pin shafts, and the positions of the first multi-stage telescopic arms are fixed.

[0018] After the main legs extend to support the support surface, one of the pin shafts is pulled out, and the auxiliary legs are rotated so that the auxiliary legs are parallel to the main girder.

[0019] Optionally, the main legs have two side support frames, the two side support frames are respectively arranged on two sides of the main girder along the width direction, and the side support frames are rotatably arranged.

[0020] During the moving of the girder replacement device and the process of the auxiliary legs lifting the main girder, the side support frames are controlled to rotate to be close to the main girder to reduce the width of the girder replacement device.

[0021] Before the main legs extend, the side support frames are controlled to rotate to an unfolded state away from the main girder.

[0022] Optionally, after the girder replacement operation is completed, the auxiliary legs are controlled to extend to support the support surface, the main legs are controlled to retract to disengage from the support surface, and the auxiliary legs are controlled to retract, so that the auxiliary legs only support the transport trolley, and the transport trolley drives the main girder to leave the current girder replacement hole.

[0023] Optionally, after the transport trolley leaves the current girder replacement hole, the transport trolley travels to the next girder replacement hole and performs the operation method as any one of the foregoing.

[0024] Optionally, the operation method of the girder replacement device includes the following steps:

[0025] A second leveling leg is arranged on the main leg;

[0026] During the extension of the main leg, the second leveling leg is extended to support the support surface.

[0027] The embodiments of this application, by adopting the above technical solutions, have the following technical effects:

[0028] This application provides auxiliary support legs for lifting the main beam. During the beam replacement operation, the main beam is first lifted by the auxiliary support legs. After the main beam is lifted, the main support legs are then controlled to support the main beam. This avoids the wear and tear problem of the existing L-shaped frame type main support legs and improves the reliability of the beam replacement equipment. Attached Figure Description

[0029] The accompanying drawings, which are included to provide a further understanding of this application and form part of this application, illustrate exemplary embodiments and are used to explain this application, but do not constitute an undue limitation of this application. In the drawings:

[0030] Figure 1 A schematic diagram of the beam-changing equipment provided in the embodiments of this application under transportation conditions;

[0031] Figure 2 A schematic diagram illustrating the beam replacement operation performed by the beam replacement equipment provided in this application embodiment;

[0032] Figure 3 A diagram showing the state of the beam-changing equipment lifting the main beam provided in an embodiment of this application;

[0033] Figure 4 A sectional view of the main support leg of the beam-changing device provided in an embodiment of this application;

[0034] Figure 5 A schematic diagram showing the main support leg of the beam-changing device provided in this application embodiment in a folded state;

[0035] Figure 6 This is a sectional view of the auxiliary support leg of the beam-changing device provided in an embodiment of this application;

[0036] Figure 7 A diagram showing the auxiliary outriggers of the beam replacement equipment provided in this embodiment of the application supporting the bridge deck.

[0037] Figure 8 for Figure 7 A magnified view of a portion of the image;

[0038] Figure 9 This is a diagram showing the auxiliary outriggers of the beam-changing equipment provided in this application being raised to a high position.

[0039] Figure 10 A diagram showing the main support leg of the beam-changing device provided in this embodiment of the application in its proper position.

[0040] Figure 11 A schematic diagram showing the auxiliary support leg of the beam-changing equipment provided in this application embodiment in a retracted state;

[0041] Figure 12 A state diagram of the auxiliary supporting legs of the beam-replacing equipment after being folded according to an embodiment of the present application;

[0042] Figure 13 A three-dimensional structural schematic diagram of the auxiliary supporting legs of the beam-replacing equipment according to an embodiment of the present application;

[0043] Figure 14 A state diagram of the leveling system of the beam-replacing equipment supported on a supporting surface according to an embodiment of the present application;

[0044] Figure 15 A state diagram of the telescopic arms of the head end of the beam-replacing equipment being jacked up according to an embodiment of the present application;

[0045] Figure 16 A state diagram of the telescopic arms of the middle part of the beam-replacing equipment being jacked up according to an embodiment of the present application;

[0046] Figure 17 A schematic diagram of the auxiliary supporting legs of the beam-replacing equipment being in a folded state according to an embodiment of the present application;

[0047] Figure 18 A three-dimensional structural schematic diagram of the trolley of the beam-replacing equipment according to an embodiment of the present application;

[0048] Figure 19 A front view of the trolley of the beam-replacing equipment according to an embodiment of the present application;

[0049] Figure 20 A partial structural diagram of the trolley of the beam-replacing equipment according to an embodiment of the present application;

[0050] Figure 21 A top view of the trolley of the beam-replacing equipment according to an embodiment of the present application;

[0051] Figure 22 A schematic diagram of the cooperation structure of the lifting tool and the lifting rope of the trolley of the beam-replacing equipment according to an embodiment of the present application;

[0052] Figure 23 A schematic diagram of the cooperation structure of the lifting rope and the simply supported beam body of the trolley of the beam-replacing equipment according to an embodiment of the present application.

[0053] Reference signs:

[0054] 1, main beam; 2, auxiliary support leg; 21, upper cross beam; 22, first multi-stage telescopic arm; 221, telescopic arm; 221a, guide sleeve; 221b, connecting beam; 23, telescopic part; 24, jacking part; 25, lower cross beam; 26, balance beam; 27, rotating hinge; 28, leveling oil cylinder; 29, supporting lead screw; 3, main support leg; 31, upper connecting beam; 32, second multi-stage telescopic arm; 33, lower connecting beam; 34, second telescopic support leg assembly; 5, lifting trolley; 51, hanger; 511, connecting beam frame; 5111, vertical beam; 5112, cross beam; 512, beam body; 5121, sliding table; 52, hoisting mechanism; 521, fixed pulley assembly; 522, movable pulley assembly; 5221, second ear seat; 523, winch; 53, lifting appliance; 531, lifting appliance body; 5311, guide shaft; 532, tensioning beam; 533, first ear seat; 54, lifting belt; 55, electrical hydraulic control box; 56, guide pulley; 57, running system; 58, longitudinal running motor; 59, driving gear; 6, transport trolley; a, pin shaft; b, simply supported beam body; c, telescopic device. DETAILED DESCRIPTION

[0055] In order to make the technical solutions and advantages in the embodiments of the present application clearer, the exemplary embodiments of the present application are further described in detail below with reference to the drawings. Obviously, the described embodiments are only some of the embodiments of the present application, not all the embodiments. It should be noted that the embodiments in the present application and the features in the embodiments can be combined with each other without conflict.

[0056] Embodiment one

[0057] Referring to Figures 1 to 23 It is shown that the embodiment one of the present application provides a beam replacement equipment, which comprises a main beam 1, two auxiliary support legs 2, two transport trolleys 6 and two main support legs 3. The two auxiliary support legs 2 are arranged at the two ends of the main beam 1 respectively, and can be telescopically extended and retracted along the direction perpendicular to the length of the main beam 1. The two auxiliary support legs 2 can be supported on the two transport trolleys 6 respectively. The two main support legs 3 are arranged at the two ends of the main beam 1 respectively, and can be telescopically extended and retracted along the direction perpendicular to the main beam 1. The beam replacement equipment has a transport working condition and a beam erection working condition. In the transport working condition, the auxiliary support legs 2 are supported on the transport trolleys 6, and the main support legs 3 are separated from the support surface. In the beam erection working condition, the main support legs 3 are supported on the support surface, and the auxiliary support legs 2 are separated from the support surface.

[0058] The main support legs 3 are used to support the temporary hole bridge at the two ends of the bridge to be replaced in the beam replacement construction process, and are the main force support legs, so as to ensure the safety of the temporary hole bridge during the beam replacement, and the auxiliary support legs 2 are supported on the transport trolley, and the load bearing equipment is transported on the railway.

[0059] The beam replacement equipment first lifts the main beam 1 through the auxiliary support leg 2 when lifting the main beam 1, and then adjusts the main support leg 3 after the main beam 1 is lifted, so that the main support leg 3 supports the main beam 1 to facilitate the subsequent beam replacement operation of the lifting trolley 5. The auxiliary support leg 2 for lifting the main beam 1 is provided in the application, which avoids the wear problem of the existing L-shaped frame type main support leg 3.

[0060] The auxiliary support leg 2 has a first multi-stage telescopic arm 22, and the main support leg 3 has a second multi-stage telescopic arm 32, and the vertical distance between the fulcrum of the auxiliary support leg 2 and the first multi-stage telescopic arm 22 is less than the vertical distance between the fulcrum of the main support leg 3 and the second multi-stage telescopic arm 32.

[0061] The fulcrum refers to the part of the auxiliary support leg 2 or the main support leg 3 supported on the support surface, which can be a bridge deck. In the embodiment of the application, the vertical distance between the fulcrum of the auxiliary support leg 2 and the first multi-stage telescopic arm 22 is less than the vertical distance between the fulcrum of the main support leg 3 and the second multi-stage telescopic arm 32. It is worth noting that the vertical distance between the fulcrum and the telescopic arm here is compared when the auxiliary support leg 2 and the main support leg 3 are in the supporting state respectively. Such a setting makes the bending moment on the auxiliary support leg 2 much smaller than that on the main support leg 3 under the same load (such as supporting the main beam), so that the telescopic wear of the auxiliary support leg 2 during lifting can be greatly reduced. Compared with the related design, which directly uses the main support leg to lift the main beam, the main support leg is subjected to a large bending moment during lifting, causing large telescopic wear of the main support leg. The embodiment of the application can use the auxiliary support leg 2 to first lift the main beam to the target height, and then the main support leg 3 is extended without load to support the main beam. The telescopic wear of the auxiliary support leg 2 is greatly reduced due to the small bending moment, so the scheme of the embodiment of the application can greatly reduce the telescopic wear of the support leg structure during lifting, effectively protecting the main support leg and prolonging the service life of the equipment.

[0062] In addition, according to the scheme of the embodiment of the application, the main support leg is replaced by the auxiliary support leg to lift the main beam, and the main support leg does not need to be arranged on the transport trolley, but can be suspended, so that the space on the transport trolley can be fully utilized, the whole vehicle of the long-distance beam replacement equipment can be more effectively avoided from being over-limited, and the structural design of the main support leg is facilitated.

[0063] In a possible implementation, as shown in Figure 1 The main support leg 3 is located between the two auxiliary support legs 2. The two auxiliary support legs 2 are located at the two ends of the main beam 1, and the two main support legs 3 are located inward of the main beam 1, facilitating the support of the auxiliary support leg 2 on the transport trolley 6.

[0064] In a possible implementation, as shown in Figure 1 and Figure 2As shown, the auxiliary support leg 2 is rotatably connected to the main beam 1, and a lifting trolley 5 is movably mounted on the main beam 1. During the beam erection process, the auxiliary support leg 2 is rotated to be parallel to the main beam 1 to avoid the lifting trolley 5.

[0065] In this implementation scheme, during the girder erection process, the auxiliary support leg 2 can be folded up to be parallel to the main beam 1, and rotated to fold back to be flush with the main beam 1, thereby avoiding the crane trolley 5 set on the main beam 1, allowing the crane trolley 5 to travel along the main beam 1 to the beam feeding position. For example, the main beam 1 has a guide rail on its lower side for the crane trolley 5 to travel on, and after the auxiliary support leg 2 is folded up, it is at least higher than the position of the guide rail.

[0066] In one possible implementation, see Figure 6 as well as Figures 13 to 17 As shown, the auxiliary support leg 2 includes: an upper crossbeam 21, a telescopic component 23, and two first multi-stage telescopic arms 22. The upper crossbeam 21 is vertically connected to the main beam 1. The two first multi-stage telescopic arms 22 are located at both ends of the upper crossbeam along its length, and the first multi-stage telescopic arms 22 are connected to the upper crossbeam 21 by at least two pins a. The telescopic component 23 is connected to the upper crossbeam or the main beam 1, and the telescopic component 23 is drively connected to the first multi-stage telescopic arms 22. In the beam erection condition, only one pin a connects the upper crossbeam and the first multi-stage telescopic arm 22. The extension or retraction of the telescopic component 23 causes the first multi-stage telescopic arm 22 to rotate parallel to the main beam 1.

[0067] In one possible implementation, two first connecting ears are respectively provided at both ends of the upper crossbeam 21, and the two first connecting ears are respectively provided on both sides of the upper crossbeam along the width direction. Two second connecting ears are provided at the end of the first multi-stage telescopic arm 22. The two second connecting ears are respectively connected to the corresponding first connecting ears on the same end of the upper crossbeam by a pin a, and at least one of the pins a is detachable.

[0068] In the supported state, the auxiliary support leg 2 is connected to the upper crossbeam via two pins a. During the process of the auxiliary support leg 2 lifting the main beam 1, the two pins a resist the torque of the upper crossbeam. When it is necessary to fold the auxiliary support leg 2 after lifting the main beam 1, one pin a can be removed, and the auxiliary support leg 2 is in a rotatable state. At this time, the auxiliary support leg 2 can be driven to swing via the telescopic component 23. This telescopic component can be a telescopic hydraulic cylinder.

[0069] The first multi-stage telescopic arm 22 includes multiple telescopic arms 221, with adjacent telescopic arms 221 slidably connected. The telescopic arm at the head end of the first multi-stage telescopic arm 22 is connected to the upper crossbeam 21 via a pin a, and the telescopic component is drivenly connected to the telescopic arm at the head end. The first multi-stage telescopic arm 22 is composed of multiple nested telescopic arms.

[0070] The auxiliary support leg 2 comprises a jacking component 24, which can drive each telescopic arm to perform telescopic movement. The telescopic arm in the elongated state can be connected and fixed with the adjacent telescopic arm through a locking component to maintain the elongated state.

[0071] Referring to Figure 15 and Figure 16 The telescopic arm comprises two guide sleeves 221a, and the two guide sleeves 221a of one telescopic arm are respectively slidably connected in the two guide sleeves 221a of the adjacent telescopic arm. The two guide sleeves 221a improve the support stability of the auxiliary support leg 2. The two guide sleeves 221a are connected as a whole and can be synchronously lifted.

[0072] The telescopic arm 221 comprises a connecting beam 221b connecting the two guide sleeves 221a, and the movable end of the jacking component 24 is selectively connected to any connecting beam 221b to drive the corresponding telescopic arm to perform telescopic movement. The connecting beam 221b not only connects the two guide sleeves 221a, but also provides a fulcrum, so that the jacking component 24 can be connected to the connecting beam 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.

[0073] Taking the first multi-stage telescopic arm 22 comprising three telescopic arms 221 as an example, the three telescopic arms 221 are respectively an upper telescopic arm, a middle telescopic arm, and a lower telescopic arm. During the elongation of the side telescopic frame, the jacking component 24 first jacks up the upper telescopic arm (i.e., the telescopic arm at the head end of the first multi-stage telescopic arm 22), then connects and fixes the upper telescopic arm and the middle telescopic arm, retracts the jacking component 24, and then jacks up the middle telescopic arm to connect and fix the middle telescopic arm and the lower telescopic arm.

[0074] The jacking component 24 is arranged on the telescopic arm at the tail end of the first multi-stage telescopic arm 22 (i.e., the lower telescopic arm), and the jacking component 24 is located between the two guide sleeves 221a of the telescopic arm at the tail end. In this way, the jacking component 24 can stably jack up each telescopic arm during telescopic movement, and each telescopic arm will not be tilted during jacking.

[0075] Optionally, the auxiliary leg of the beam-replacing device 2 comprises a lower crossbeam 25, both of the first multi-stage telescopic arms 22 are connected to the lower crossbeam 25, and the lower crossbeam 25 is provided with an upper core disc capable of being connected to or separated from a lower core disc on the transport trolley 6. In the state that the upper core disc is supported on the lower core disc, the auxiliary leg 2 can be stably in the vertical state without tilting, and when the auxiliary leg is retracted, the upper core disc is separated from the lower core disc, at which time the auxiliary leg 2 can be conveniently folded. The upper core disc and the lower core disc are structures commonly seen in the field, for example, on trains, which belong to the prior art, and the structure thereof will not be described herein.

[0076] The auxiliary leg 2 of the beam-replacing device comprises a leveling system connected to the lower crossbeam 25, and the leveling system has a first telescopic leg assembly. Referring to Figure 14 When the auxiliary leg 2 is to be supported on a support surface, the first telescopic leg assembly can be adjusted to be extended to be supported on the support surface. Before jacking up the main beam 1, the auxiliary leg 2 needs to be supported on the support surface and level the main beam 1, so as to facilitate the stable jacking up of the main beam 1. The leveling system is arranged on both sides of the lower crossbeam 25, and has the functions of transverse and longitudinal adjustment.

[0077] Further, the leveling system further comprises a balance beam 26 and a rotary hinge 27, the balance beam 26 is connected to the lower crossbeam 25 through the rotary hinge 27. The first telescopic leg assembly comprises a leveling oil cylinder 28 and a supporting lead screw 29, both of which are connected to the balance beam 26, and both of which can be telescopically moved in a direction perpendicular to the balance beam 26 to level the main beam 1. Specifically, the leveling systems located on the same side of the main beam 1 in the width direction can realize the transverse leveling of the lower crossbeam 25 and the main beam 1 by the extension or retraction of the first telescopic leg assembly; the leveling systems arranged on both sides of the lower crossbeam 25 can realize the longitudinal leveling of the main beam 1, i.e. the leveling in the length direction of the main beam 1, by the extension or retraction of the first telescopic leg assembly.

[0078] The main leg 3 comprises two side support frames, both of which are arranged on both sides of the main beam 1 in the width direction and are connected to the main beam 1, the side support frames are rotatably arranged, the rotation axes of the side support frames are perpendicular to the main beam 1, and the side support frames can rotate around the rotation axes to approach or move away from the main beam 1.

[0079] In the embodiment, the main leg 3 has a folding function, and the auxiliary leg 2 has a rotating folding function. After folding, referring to Figure 5 The main leg 3 limits meet the railway transport limits. Both of the auxiliary legs 2 are supported on the two transport trolleys 6, so that the beam-replacing device can run and transport on the railway.

[0080] In the transportation mode, the beam-replacing device is within the railway transportation limit and can travel on the railway without any restrictions. In the beam-erecting mode, the main support leg 3 is supported on the end of the temporary hole bridge, so that the force transmission is more reasonable and safe.

[0081] Referring to Figure 4 and Figure 5 As shown in the drawings, the main support leg 3 includes an upper connecting beam 31 connected to the main beam 1, and the upper connecting beam 31 extends to both sides of the main beam 1 in the width direction, and two side support frames are respectively rotatably connected to both ends of the upper connecting beam 31. The main support leg 3 further includes a lower connecting beam 33, and two side support frames are respectively rotatably connected to both ends of the lower connecting beam 33, and a second telescopic support leg assembly 34 is arranged on the lower connecting beam 33.

[0082] After the main beam 1 is jacked up, the second telescopic support leg assembly 34 is extended to support the support surface during the extension of the main support leg 3. The second telescopic support leg assembly 34 can include a leveling oil cylinder 28 and a support lead screw 29, both of which are connected to the balance beam 26, and both of which can be telescopically moved in a direction perpendicular to the balance beam 26 to stably support the main beam 1.

[0083] Embodiment Two

[0084] Referring to Figures 18 to 23 As shown in the drawings, the beam-replacing device of the present application is described in detail. The lifting trolley 5 includes a hanging frame 51, a hoisting mechanism 52, and a lifting device 53. The hanging frame 51 is used to movably connect to the main beam 1 of the beam-replacing device, and the hanging frame 51 includes a connecting beam frame 511 and two beam bodies 512. The two beam bodies 512 are arranged at intervals, and the beam body 512 has a top surface and a side surface connected to the top surface. The connecting beam frame 511 is connected to the top surface of the two beam bodies, respectively, and the side surface is provided with a sliding table 5121. The hoisting mechanism 52 includes a fixed pulley assembly 521 and a movable pulley assembly 522 connected to the fixed pulley assembly 521. The fixed pulley assembly 521 is arranged between the two beam bodies 512, and the fixed pulley assembly 521 is slidably connected to the sliding table 5121. The lifting device is connected to the movable pulley assembly 522.

[0085] In the embodiment of the present application, the fixed pulley assembly 521 is not supported on the top surface of the beam body, but is sunken inside the hanger 51. A sliding table 5121 is arranged on the side surface of the beam body, and the fixed pulley assembly 521 is slidably supported on the sliding table 5121, so that the fixed pulley assembly 521 is not blocked by the beam connecting frame 511, and the transverse movement space of the fixed pulley assembly 521 is increased, and the curve beam can be achieved under the condition of limited outer dimensions. The sliding table 5121 can be arranged on the side surface of the inner side of the two beam bodies 512, i.e., the two opposite surfaces, so that the fixed pulley assembly 521 can be slidably supported on the sliding table 5121.

[0086] The trolley 5 further includes a driving system, a hoist 523, a guide pulley 56, a walking system 57, an electric hydraulic control box 55, and the like. One end of the hoisting rope is wound on the hoist 523, and the hoisting rope extends to the fixed pulley assembly 521 and the movable pulley assembly 522 after passing through the guide pulley 56. The hoist 523 winds or releases the hoisting rope to make the movable pulley assembly 522 move up and down. The walking system 57 can be arranged on the hanger 51, and the walking system 57 has rollers which can be supported on corresponding positions of the main beam. The driving system can include a longitudinal walking motor 58 and a driving gear 59, the longitudinal walking motor 58 and the driving gear 59 are connected, the driving gear 59 is engaged with a rack on the main beam, and the longitudinal walking motor 58 drives the driving gear 59 to rotate, so as to drive the trolley 5 to walk along the main beam. The electric hydraulic control box 55 is used to provide hydraulic energy and electric energy for each oil cylinder and motor.

[0087] In a possible embodiment, the sliding table 5121 has an upper table surface which is located lower than the top surface of the beam body, the upper table surface intersects with the side surface of the beam body, the fixed pulley assembly 521 has a first housing which is limited between the side surfaces of the two beam bodies, and the two sides of the first housing are slidably supported on the upper table surfaces of the two beam bodies, respectively.

[0088] The beam connecting frame 511 includes two vertical beams 5111 which are connected to the top surfaces of the two beam bodies, respectively, and the sliding table 5121 extends from one side of the vertical beam 5111 to the other side of the vertical beam 5111 or close to the other side of the vertical beam 5111 in the extension direction of the beam body. The vertical beam 5111 is connected to the top surface, 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 or even pass through the vertical beam 5111, so that the transverse movement amount is significantly increased.

[0089] In a possible implementation, a connecting beam (not shown) is connected between the two beam bodies 512, and the sliding table 5121 extends to the connecting beam. The connecting beam connects the two beam bodies 512, and enhances the structural strength of the hanger 51. The end of the sliding table 5121 extends to the connecting beam, and provides the maximum transverse moving space for the given pulley assembly 521.

[0090] The trolley 5 includes a telescopic device c, one end of which is hinged to the connecting beam 511, and the other end of which is hinged to the fixed pulley assembly 521. The telescopic device c is driven to move telescopically, and drives the fixed pulley assembly 521 to move along the beam body 512.

[0091] The telescopic device c can be a telescopic oil cylinder or an electric push rod. The connecting beam 511 can include two vertical beams 5111 and a cross beam 5112 connecting the two vertical beams 5111, and the telescopic device c can be hinged at one end to the cross beam and at the other end to the housing of the fixed pulley assembly 521.

[0092] The trolley 5 can include two connecting beams 511 and two fixed pulley assemblies 521, and the two fixed pulley assemblies 521 are synchronously moved along the beam body 512 under the driving of the corresponding telescopic devices c.

[0093] In a possible implementation, a first ear seat 533 is arranged on the lifting tool 53, and a second ear seat 5221 is arranged on the movable pulley assembly 522. The first ear seat 533 and the second ear seat 5221 are detachably connected through a pin shaft a. In the embodiment of the present application, the movable pulley assembly of the trolley and the lifting tool are designed to be separated, and the quick-release structure of the pin shaft a is adopted.

[0094] The lifting rope is arranged between the movable pulley assembly and the fixed pulley assembly, and can be a multiple-ratio steel wire rope group. The movable pulley assembly 522 and the lifting tool are designed to be quick-release, and are provided with a pin shaft a.

[0095] The trolley 5 includes a lifting belt 54, the lifting tool 53 includes a lifting tool body 531 and a tensioning beam 532, the lifting tool body 531 is connected to the movable pulley assembly 522, the lifting belt 54 is connected to the tensioning beam 532, and a holding space is formed between the lifting belt 54 and the lifting tool body 531. The tensioning beam 532 is connected to the lifting tool body 531, and can move relative to the lifting tool body 531 to change the position, so as to adjust the size of the holding space. By adjusting the holding space between the lifting belt 54 and the lifting beam body, the lifting belt 54 is ensured to be in a tensioned state, and the problem of lifting capacity loss caused by the failure of the lifting belt 54 to be tensioned is solved.

[0096] The tensioning beam 532 has a through slot, the end of the sling 54 can be inserted into the sling 54 beam, the sling 54 can be connected to the tensioning beam 532 through the sling 54 bolt, and the end of the sling 54 has a strip-shaped slot which can be provided. The tensioning beam 532 is arranged on the upper surface of the hoist body 531.

[0097] The hoist body 531 has a guide shaft 5311, the tensioning beam 532 has a guide hole, the tensioning beam 532 is sleeved on the guide shaft 5311 through the guide hole, and the tensioning beam 532 can be translated along the guide shaft 5311 to increase or decrease the distance from the hoist body 531.

[0098] The tensioning beam 532 has a through threaded slot, a screw is threadedly connected to the threaded slot, and the screw abuts against the hoist body 531, and rotating the screw can adjust the distance between the hoist body 531 and the tensioning beam 532. The arrangement of the screw facilitates the lifting or lowering of the tensioning beam 532 to adjust the tightness of the sling 54.

[0099] The trolley 5 further comprises a gasket between the hoist body 531 and the tensioning beam 532, the guide column has an external thread, and a nut is threadedly connected to one end of the threaded slot protruding from the guide column, and the nut abuts against the tensioning beam 532.

[0100] The operation process of the trolley 5 for beam replacement is as follows:

[0101] Step S100, the hoist is preset on the to-be-replaced simple beam body b.

[0102] Step S200, the hoist 53 is tensioned with the sling 54, the tensioning process is to rotate the screw, the tensioning beam 532 can be jacked upward until the sling 54 is in a taut state, then a gasket is inserted between the tensioning beam 532 and the hoist body 531, so that the tensioning beam 532 and the hoist body 531 maintain a fixed distance, and finally a nut is screwed on the external thread of the guide column to fix the tensioning beam 532 and the hoist body 531.

[0103] Step S300, after the beam replacement equipment reaches the beam replacement bridge position, the trolley 5 lowers the movable pulley assembly 522, connects the movable pulley assembly 522 and the hoist, and operates the winch 523, so that the simple beam body b can be lifted.

[0104] Embodiment three

[0105] The embodiment three of the application provides a working method of the beam replacing device in the above embodiment, the beam replacing device comprises a main beam 1, two auxiliary legs 2 and two main legs 3, the two auxiliary legs 2 are arranged at two ends of the main beam 1, the auxiliary legs 2 can be extended and retracted along a length direction perpendicular to the main beam 1, the two main legs 3 are arranged at the two ends of the main beam 1, the main legs 3 can be extended and retracted along a direction perpendicular to the main beam 1, and the working method comprises the following steps:

[0106] controlling the two auxiliary legs 2 to extend and lift the main beam 1 to a target height, controlling the two main legs 3 to extend downwards to a support surface to support the main beam 1, and controlling a movable hoist trolley 5 on the main beam 1 to perform a beam replacing action.

[0107] The application provides the auxiliary legs 2 for lifting the main beam 1, in the beam replacing working process, the main beam 1 is first lifted through the auxiliary legs 2, in the lifting process, the main legs arranged at the two ends of the main beam 1 are also lifted, after the main beam 1 is completely lifted, the main legs 3 are controlled to extend downwards to the support surface and support the main beam 1, at this time, the auxiliary legs 2 are controlled to retract to the initial position. Since the vertical distance between the supporting point of the auxiliary legs 2 and the first multi-stage telescopic arm 22 is less than the vertical distance between the supporting point of the main legs 3 and the second multi-stage telescopic arm 32, the working method of the beam replacing device in the embodiment lifts the main beam 1 by using the auxiliary legs 2, avoids the wear problem of the existing L-shaped frame type main legs 3 in lifting, and improves the reliability of the beam replacing device.

[0108] The beam replacing device comprises two transport trolleys 6, and the two auxiliary legs 2 are connected to the corresponding transport trolleys 6 respectively. The main beam 1 is supported and moved to the beam replacing hole position through the transport trolleys 6.

[0109] The auxiliary legs 2 have upper core discs, the transport trolleys 6 have lower core discs, in the process of transporting the main beam 1 by the transport trolleys 6, the auxiliary legs 2 are controlled to be in the retracted state, and the upper core discs of the auxiliary legs 2 are supported on the lower core discs on the transport trolleys 6.

[0110] The auxiliary legs 2 have first leveling feet, before the auxiliary legs 2 are extended to lift the main beam 1, the first leveling feet are controlled to be extended and supported on the support surface, so as to level the main beam 1. In the process of moving the beam replacing device and the process of extending the auxiliary legs 2 to lift the main beam 1, the main legs 3 are in the retracted state, and the main legs 3 and the support surface have a gap. After the auxiliary legs 2 lift the main beam 1 to the target height, the main legs 3 are controlled to be extended to be supported on the support surface, and the auxiliary legs 2 are controlled to be separated from the support surface.

[0111] After the main legs 3 are supported on the support surface, the auxiliary legs 2 are controlled to be retracted, and the auxiliary legs 2 are folded to be parallel to the main beam 1, so as to avoid the movable hoist trolley 5 on the main beam 1.

[0112] The auxiliary support leg 2 includes an upper crossbeam and two first multi-stage telescopic arms 22. The upper crossbeam is vertically connected to the main beam 1, and the two first multi-stage telescopic arms 22 are located at opposite ends of the upper crossbeam. During the movement of the beam-changing equipment and the lifting of the main beam 1 by the auxiliary support leg 2, the first multi-stage telescopic arms 22 are connected to the upper crossbeam via two pins a, and their positions are fixed. After the main support leg 3 extends to support the support surface, one of the pins a is pulled out, and the auxiliary support leg 2 is rotated so that it is parallel to the main beam 1.

[0113] The main support leg 3 has two side support frames, which are respectively disposed on both sides of the main beam 1 along the width direction. These side support frames are rotatable. During the movement of the beam-changing equipment and the lifting of the main beam 1 by the auxiliary support leg 2, the side support frames are controlled to rotate closer to the main beam 1, reducing the width of the beam-changing equipment. The clearance of the main support leg 3 meets the railway transport clearance requirements. Before the main support leg 3 extends, the side support frames are controlled to rotate to an extended state away from the main beam 1.

[0114] After the beam replacement operation is completed, the auxiliary support leg 2 is extended to support the support surface, the main support leg 3 is retracted to detach from the support surface, and the auxiliary support leg 2 is retracted, so that the auxiliary support leg 2 only supports the transport trolley 6. The transport trolley 6 then moves the main beam 1 away from the current beam replacement position. If the current beam replacement position is the last one, the transport trolley 6 moves away from the bridge. If there are other beam replacement positions, after the transport trolley 6 leaves the current beam replacement position, it moves to the next beam replacement position and performs the operation method as described in the previous embodiment.

[0115] A second leveling leg is provided on the main support leg 3. During the extension of the main support leg 3, the second leveling leg extends to support the support surface.

[0116] The following provides the operating procedure for the beam replacement equipment of this application, including the following steps:

[0117] Step S1, see Figure 7 and Figure 8 As shown, the main beam 1 is supported by a pair of transport trolleys 6 and moved to the beam replacement hole. The two auxiliary legs 2 on the main beam 1 are supported by the transport trolleys 6, and the two main legs 3 connected to the main beam 1 are in a retracted state.

[0118] Step S2, see Figure 3 and Figure 9 As shown, the auxiliary outrigger 2 is extended to lift the main beam 1 to the target height;

[0119] Step S3, see Figure 10 As shown, the main support leg 3 is extended to support the support surface; for example, the main support leg 3 can support the end of the bridge span to be replaced, thereby ensuring the safety of the bridge span when replacing the beam.

[0120] Step S4, as shown in Figure 11 and Figure 12 auxiliary leg 2 is controlled to retract and fold to be parallel to the main beam 1, as shown in Figure 2 the trolley 5 on the main beam 1 is controlled to perform the beam changing action;

[0121] Step S5, the beam changing operation is completed;

[0122] Step S6, the auxiliary leg 2 is controlled to rotate to be perpendicular to the main beam 1;

[0123] Step S7, the auxiliary leg 2 is controlled to extend to support on the support surface;

[0124] Step S8, the main leg 3 is retracted to be separated from the support surface;

[0125] Step S9, the auxiliary leg 2 is retracted, and the auxiliary leg 2 is only supported on the transport trolley 6;

[0126] Step S10, the main beam 1 is supported by a pair of transport trolleys 6 and moved to another beam changing hole position.

[0127] In the description of the present application and the embodiments thereof, it should be understood that the orientations or positional relationships indicated by the terms "top", "bottom", "height" and the like are based on the orientations or positional relationships shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the present application.

[0128] In the present application and the embodiments thereof, unless otherwise explicitly specified and limited, the terms "arrangement", "installation", "connection", "connection", "fixation" and the like should be understood broadly, for example, can be fixedly connected, can be detachably connected, or integrated; can be mechanically connected, can be electrically connected, or can be in communication; can be directly connected, or indirectly connected through an intermediate medium; can be the internal communication of two elements or the interaction relationship between two elements. For those skilled in the art, the specific meanings of the above terms in the present application can be understood according to the specific circumstances.

[0129] In the present application and embodiments thereof, unless specifically stated and limited otherwise, "on" or "under" of a first feature with respect to a second feature can include that the first and second features are in direct contact, or that the first and second features are not in direct contact but are in contact through another feature between them. Also, "over", "above", and "on top of" of a first feature with respect to a second feature includes that the first feature is directly above and obliquely above the second feature, or simply means that the first feature is horizontally higher than the second feature. "Under", "below", and "underneath" of a first feature with respect to a second feature includes that the first feature is directly above and obliquely above the second feature, or simply means that the first feature is horizontally lower than the second feature.

[0130] The above disclosure provides many different embodiments or examples for implementing different structures of the present application. For the purpose of simplicity, the elements and settings of the particular examples in the above are described in some detail. This is, of course, done without loss of generality and is intended to provide what is believed to be the most useful and readily understood description of the structures as well as to fully convey the scope of the application. Descriptions of the various embodiments and / or settings are intended merely as illustrative examples and are not intended to limit the scope of the application. Furthermore, the various examples of the present application can be used in different embodiments and / or settings without departing from the scope of the present application. It is also noted that, as used in the specification and the appended claims, the singular forms "a," "an" and "the" include plural referents unless the context clearly dictates otherwise.

[0131] While the preferred embodiments of the application have been described, additional variations and modifications can be made to the preferred embodiments without departing from the spirit and scope of the application. Therefore, it is intended that the appended claims cover all such variations and modifications that come within the scope of the application. It is further intended that any and all patents, patent applications, and other publications mentioned in this specification are incorporated by reference.

[0132] Obviously, numerous modifications and variations of the present application are possible in light of the above teachings. It is therefore to be understood that within the scope of the appended claims and their equivalents, the application can be practiced otherwise than as specifically described.

Claims

1. A method for operating a beam-changing device, characterized in that, The beam replacement equipment includes a main beam, two auxiliary legs, and two main legs. The two auxiliary legs are located at both ends of the main beam and are extendable and retractable along a direction perpendicular to the length of the main beam. The two main legs are also located at both ends of the main beam and are extendable and retractable along a direction perpendicular to the main beam. The operating method includes: Control the two auxiliary outriggers to extend and lift the main beam to the target height, control the two main outriggers to extend downward to the support surface to support the main beam, and control the movable crane trolley on the main beam to perform the beam replacement action.

2. The operating method of the beam-changing equipment according to claim 1, characterized in that, The beam replacement equipment includes two transport trolleys, and the two auxiliary legs are respectively connected to the corresponding transport trolleys; The main beam is supported by a transport trolley and moved to the beam replacement hole.

3. The operating method of the beam-changing equipment according to claim 2, characterized in that, The auxiliary support legs have an upper core plate, and the transport trolley has a lower core plate; During the transport of the main beam by the transport trolley, the auxiliary support legs are controlled to be in a retracted state, and the upper core plate of the auxiliary support legs is supported by the lower core plate on the transport trolley.

4. The operating method of the beam replacement equipment according to claim 1, characterized in that, The auxiliary outriggers have a first leveling foot; Before the auxiliary outriggers extend to lift the main beam, the first leveling outrigger is controlled to extend and support the main beam on the support surface to level the main beam.

5. The operating method of the beam-changing equipment according to claim 1, characterized in that, During the movement of the beam replacement equipment and the extension of the auxiliary legs to lift the main beam, the main legs are in a retracted state, and there is a gap between the main legs and the support surface. After the auxiliary outrigger lifts the main beam to the target height, the main outrigger is controlled to extend to support the support surface, and the auxiliary outrigger is controlled to detach from the support surface.

6. The operating method of the beam-changing equipment according to claim 5, characterized in that, The auxiliary outrigger is rotatably connected to the main beam; after the main outrigger is supported on the support surface, the auxiliary outrigger is controlled to retract and fold, so that the auxiliary outrigger is parallel to the main beam to avoid the movable lifting trolley on the main beam.

7. The operating method of the beam-changing equipment according to claim 6, characterized in that, The auxiliary outrigger includes an upper crossbeam and two first multi-stage telescopic arms. The upper crossbeam is vertically connected to the main beam, and the two first multi-stage telescopic arms are located at both ends of the upper crossbeam. During the process of moving the beam replacement equipment and lifting the main beam with the auxiliary outriggers, the first multi-stage telescopic arm is connected to the upper crossbeam through two pins, and the position of the first multi-stage telescopic arm is fixed. After the main support leg extends to support the support surface, pull out one of the pins and rotate the auxiliary support leg so that the auxiliary support leg is parallel to the main beam.

8. The operating method of the beam-changing equipment according to claim 1, characterized in that, The main support leg has two side support frames, which are respectively arranged on both sides of the main beam along the width direction. The side support frames are rotatable. During the movement of the beam-changing equipment and the lifting of the main beam by the auxiliary outriggers, the side support frame is controlled to rotate closer to the main beam to reduce the width of the beam-changing equipment; Before the main support leg extends, control the side support frame to rotate to an unfolded state away from the main beam.

9. The operating method of the beam-changing equipment according to claim 1, characterized in that, After the beam replacement operation is completed, the auxiliary support legs are extended to support the support surface, the main support legs are retracted to detach from the support surface, and the auxiliary support legs are retracted. The auxiliary support legs support only the transport trolley, and the transport trolley drives the main beam away from the current beam replacement hole.

10. The operating method of the beam-changing equipment according to claim 9, characterized in that, After the transport trolley leaves the current beam replacement hole, the transport trolley moves to the next beam replacement hole and performs the operation method as described in claim 1.

11. The operating method of the beam-changing equipment according to claim 1, characterized in that, Includes the following steps: A second leveling leg is installed on the main support leg; During the extension of the main support leg, the second leveling support leg extends to support the support surface.

Images