CN211849003U - Whole hole beam replacement frame equipment - Google Patents

Abstract

The utility model relates to the technical field of bridge frame changing equipment, and provides a whole-hole beam frame changing device. The whole-hole beam changing equipment includes a guide beam, two guide beam transfer vehicles, two beam transport trains and two gantry cranes. ;Two beam transport trains are equipped with carrying beam trolleys and mobile support mechanisms; two gantry cranes walk on top of the guide beams to remove old beams and replace new ones, and mobile support mechanisms are used to place the gantry hanger on the longitudinal beam. superior. The replacement beams of the present application are assembled in the beam yard, reducing the pollution to the construction site, and at the same time, the overall beam replacement of the double beams can be completed at one time, which increases the construction efficiency, and is beneficial to the efficient use of the skylight point time operation, and is hung on the guide beam through the gantry. The beam replacement process can realize beam replacement construction under various terrain and environmental conditions, and has a wide range of applications. At the same time, it requires less preliminary preparation on the construction site and reduces the impact on existing lines.

Description

Whole hole beam changing equipment

technical field

The utility model relates to the technical field of bridge frame changing equipment, in particular to a whole-hole beam frame changing device.

Background technique

With the growth of the current railway and highway operation time in my country, the problem of bridge aging has an increasingly prominent impact on the operation of existing lines (already built lines). Some bridges that have not been built for a long time have to be replaced because of the continuous speed increase of the existing lines, especially the main trunk lines, and the need for the passage of heavy-duty trains, resulting in insufficient strength or rigidity to meet the requirements. Due to the poor quality of manufacturing and installation of some bridges, some bridges are damaged every year.

In addition, my country used a large number of steel beams in the past railway manufacturing. The service life of these steel beams was significantly lower than that of concrete beams, and the maintenance workload of steel beams was very large, and some places could not be maintained at all, which also caused some steel beams. The beam needs to be replaced before it reaches its strength life. Therefore, for different bridge forms, it is urgent to study one or several safe and reliable methods for replacing existing railway bridges.

At present, the existing railway bridge replacement methods in China include the fully enclosed method of existing railway bridge replacement and the intermittent closed existing bridge replacement method.

The idea of the fully enclosed replacement beam is to build a temporary access line or bridge near the existing railway bridge; trains pass through the temporary access line or bridge, and the bridge erection machine is mainly used for bridge replacement. This mode of operation does not need to interrupt traffic, and is suitable for bridges in rivers or valleys, but it is necessary to build access lines or bridges, and the line needs to be restored after the frame is replaced, which is costly and takes a long time. Point construction is required when the line is connected to the main line and the main line is connected to the main line. At the same time, the line is frequently disturbed, resulting in instability of the roadbed and the track bed. Therefore, the speed limit time is long, which has a great impact on the punctual operation of the train; the construction and demolition of the access line Great impact on the environment.

The idea of the intermittently closed frame changing beam is to implement the bridge frame changing operation by adjusting the train operation diagram or the train operation gap and using the gantry crane or the support transverse movement. This operation mode does not require construction of access lines, costs less, and has no environmental pollution; the preparation time is short, and the bridge frame replacement work can be carried out in a short time; the disturbance to the existing line is small, and the frame replacement is completed within a short period of time. Normal operation can be resumed. The preparation work is carried out offline, without disturbing the existing lines, but it cannot be applied to the bridges in the valley or the upper part of the river. Intermittent closure of existing bridges to replace the existing line, because there is no access line for vehicles to bypass, so the safety and reliability of the equipment and the length of the closure time become the top priority of the program.

For the above-mentioned problems, it is urgent to propose a new set of construction technology and equipment for railway girder bridge replacement that can be applied to various pier heights or terrain and landforms under the bridge, so as to provide new ideas and methods for bridge replacement projects. It is guaranteed that the whole-hole simply supported beam, rail row and the overall frame replacement of the turnout can be completed safely and efficiently within the "skylight point" under the premise of minimal interference to the original line equipment.

Utility model content

In order to solve the above-mentioned technical problems or at least partially solve the above-mentioned technical problems, the present invention provides a whole-hole beam frame changing device.

The above-mentioned whole-hole beam replacement equipment includes:

The guide beam includes two longitudinal beams and two transverse beams for connecting the two longitudinal beams, the two transverse beams are respectively supported on the existing bridges on both sides of the hole to be replaced, and the two longitudinal beams The width between them is greater than the width of the beams to be replaced;

Two guide beam transfer vehicles, including a vehicle body for driving the guide beam to walk on the existing bridge, the vehicle body is provided with an upper walking mechanism for walking on the top of the longitudinal beam, and the upper walking mechanism is provided on the vehicle body. the mechanism is vertically movable relative to the bottom of the vehicle body;

Two beam-carrying trains are arranged on both sides of the guide beams, and both the beam-carrying trains are provided with support beam trolleys for consigning beam pieces and two mobile support mechanisms for walking on the beam-carrying trains;

Two gantry cranes, walking on the top of the guide beam, are used to remove the beam to be replaced and place the beam to be replaced on the carrying beam trolley of one of the special beam transport trains, and will be placed on the other. The replacement beams on the special beam transport train are installed in the holes of the rack to be replaced, and the moving support mechanism is used to place the gantry hanger on the longitudinal beam or drive the gantry crane to separate from the guide beam.

Optionally, the moving support mechanism is a gantry bracket arranged on the beam transport train, and the gantry bracket includes a base for walking on the top of the beam transport train and a support for supporting the gantry crane. A connecting part is arranged between the base part and the support part for driving the support part to rotate horizontally, and the support part can realize the switching of the position of the gantry crane in the transport or working state by rotating.

Optionally, the support portion can be raised and lowered on the connection portion, and the support portion can be fixed by a limiting portion in its lifting height.

Optionally, both ends of the two longitudinal beams extend out of the transverse beams to form guide beams, and the gantry bracket drives the gantry crane to move between the two guide beams arranged on the same side, and the support The lifting and rotating of the part puts the gantry hanger on the guide beam or drives the gantry crane to separate from the guide beam.

Optionally, the guide beam and the longitudinal beam are hingedly arranged, and a first adjustment device is connected to the guide beam, and the first adjustment device is used to drive the guide beam along the distance between the guide beam and the longitudinal beam. Swing at the hinge.

Optionally, the moving support mechanism includes a running part for walking on the beam-transporting train and a lifting part arranged above the running part, the lifting part is used to support the gantry crane, the The lift portion can move relative to the running portion along the length direction of the beam-carrying train, and the top of the lift portion is at a level greater than or equal to the level at which the top surface of the guide beam is located.

Optionally, both ends of the two transverse beams are hinged with the longitudinal beams, and a second adjusting device is connected to the longitudinal beams, and the second adjusting device is used to drive the longitudinal beams along the longitudinal beams. The hinge of the beam swings.

Optionally, the second adjusting device includes a telescopic member hingedly arranged between the transverse beam and one of the longitudinal beams.

Optionally, the special beam transport train includes a tractor head and a body, and the top of the body is provided with two tracks along the length direction for the support beam trolley and the gantry bracket to travel.

Optionally, the top of the vehicle body is further provided with a plurality of temporary supports for temporarily supporting the beam pieces, each of the temporary supports is arranged between the two rails, and the temporary supports can be vertically supported. Extends straight.

Compared with the prior art, the above-mentioned technical solutions provided in the embodiments of the present application have the following advantages:

The replacement beams of the present application are assembled in the beam yard, reducing the pollution to the construction site, and at the same time, the overall beam replacement of the double beams can be completed at one time, which increases the construction efficiency, and is beneficial to the efficient use of the skylight point time operation, and is hung on the guide beam through the gantry. The beam replacement process can realize beam replacement construction under various terrain and environmental conditions, and has a wide range of applications, especially for beam replacement construction in high piers, deep valleys and under bridges with water. Less preparatory requirements are required to reduce the impact on existing lines.

Description of drawings

Fig. 1 is the schematic diagram of the guide beam, the first special beam transporting train and the second special beam transporting train moving to the construction site;

Fig. 2 is the schematic diagram of the gantry crane moving to the guide beam;

Fig. 3 is the schematic diagram of dismantling the bridge to be replaced by gantry crane;

Figure 4 is a schematic diagram of installing a replacement bridge by a gantry crane;

Figure 5 is a schematic diagram after the bridge replacement is completed;

6 is a schematic diagram of a special train for transporting beams in an embodiment of the present utility model;

7 is a schematic diagram of a guide beam with variable width in an embodiment of the present invention;

8 is a schematic diagram of a first adjusting device provided on a guide beam with variable width in an embodiment of the present invention;

9 is a schematic diagram of a second adjusting device provided on a guide beam with a variable width according to an embodiment of the present invention;

10 is a schematic diagram of a guide beam with a variable width in an unfolded state in an embodiment of the present invention;

11 is a schematic diagram of a guide beam with a variable width in a retracted state according to an embodiment of the present invention;

12 is a schematic diagram of a guide beam transfer vehicle crossing a cross beam in an embodiment of the present invention;

13 is a schematic diagram of disassembling and assembling a bridge on a guide beam with a gantry hanger in an embodiment of the present utility model;

14 is a schematic diagram of a guide beam transfer vehicle in an embodiment of the present invention;

Fig. 15 is a schematic diagram of an arrangement mode in which the guide beam transfer vehicle adopts the combination of the first vehicle body and the second vehicle body in an embodiment of the present invention;

16 is a schematic diagram of a telescopic structure provided on a guide beam transfer vehicle in an embodiment of the present invention;

17 is a schematic diagram of a gantry bracket in an embodiment of the present invention;

18 is a schematic diagram of a gantry crane in an embodiment of the present invention;

19 is a schematic diagram of the gantry support driving the gantry crane to rotate to the transport position in an embodiment of the present invention;

FIG. 20 is a schematic diagram of placing the gantry hanger on the guide beam by the gantry bracket according to an embodiment of the present invention.

Reference number:

1. Guide beam transfer vehicle; 11. Car body; 111, First car body; 112, Second car body; 113, Telescopic structure; 12. Upper travel mechanism; 121, Turntable; Component; 124, connecting rod; 125, movable cover; 13, lower traveling mechanism; 131, bottom plate; 132, traveling wheel; 14, lifting mechanism; 141, supporting plate; 2, guide beam; 21, beam; 22, longitudinal Beam; 23. Guiding beam; 3. The first special train for transporting beams; 31. The second special train for transporting beams; 32. Carrying beam trolley; 33. Tractor head; 34. Body; 4. Gantry crane; 5. Gantry bracket; 51. Foundation part; 52, supporting part; 53, connecting part; 6, first adjusting device; 61, second adjusting device.

Detailed ways

In order to be able to understand the above-mentioned objects, features and advantages of the present invention more clearly, the present invention will be further described in detail below with reference to the accompanying drawings and embodiments. It is to be understood that the described embodiments are some, but not all, embodiments of the present invention. The specific embodiments described herein are only used to explain the present invention, but not to limit the present invention. Based on the described embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art fall within the protection scope of the present invention.

With reference to FIGS. 1 to 6 , the whole-hole beam rack changing equipment provided in the embodiment of the present application includes a guide beam 2 , two guide beam transfer vehicles 1 , two special beam transport trains, and two gantry cranes 4 .

As shown in FIG. 7 , the guide beam 2 includes two longitudinal beams 22 and two transverse beams 21 for connecting the two longitudinal beams 22. The two transverse beams 21 are respectively supported on the existing bridges on both sides of the holes to be exchanged. The width between the two longitudinal beams 22 is greater than the width of the beam pieces, so that the gantry crane 4 can walk on the top of the longitudinal beams 22 . Specifically, the two longitudinal beams 22 are located outside the vertical plane where the edge of the beam piece is located, so as to avoid preventing the disassembly of the beam piece and the installation of a new beam.

10, 14 to 16, the two guide beam transfer vehicles 1 include a vehicle body 11 for driving the guide beam 2 to walk on the existing bridge, and the vehicle body 11 is provided with a top of the longitudinal beam 22 The running upper running mechanism 12 is movable in a vertical direction relative to the bottom of the vehicle body 11 . The relative sliding here means that on the premise that the position of the vehicle body 11 in the vertical direction remains unchanged, the upper running mechanism 12 can move in the vertical direction relative to the bottom of the vehicle body 11 ; or the upper running mechanism 12 can move in the vertical direction On the premise that the position of the vehicle body 11 remains unchanged, the bottom of the vehicle body 11 can move in the vertical direction relative to the upper running mechanism 12 . Preferably, the vehicle body 11 is arranged in a columnar shape to reduce the volume of the vehicle body 11 .

As shown in FIG. 14 , the bottom of the vehicle body 11 is provided with a lower running mechanism 13 for running on an existing bridge, and the vehicle body 11 is provided with a lift mechanism 14 for supporting the guide beam 2 . The lower traveling mechanism 13 includes a bottom plate 131 and a traveling wheel 132 arranged at the bottom of the bottom plate 131. The lifting mechanism 14 includes a support plate 141 symmetrically arranged on both sides of the vehicle body 11, and the support plate 141 can be extended and retracted along the horizontal direction. During transportation, The support plate 141 extends out for placing the guide beam 2. After moving to the working position, the support plate 141 retracts so that the guide beam 2 can be lowered to the working position. The guide beam 2 can be lowered by means of external equipment, or the upper running mechanism 12 can be connected to the guide beam 2, and the guide beam 2 can be lowered through the downward movement of the upper running mechanism 12, which saves equipment costs and is easy to use. In this way, the guide beam 2 is placed on the guide beam transfer vehicle 1 .

As shown in FIG. 15 , the change of the distance between the upper running mechanism 12 and the bottom of the vehicle body 11 can be realized by the expansion and contraction of the vehicle body 11 . Specifically, the vehicle body 11 includes a first vehicle body 111 and a second vehicle body 112 that can be lifted and lowered on the first vehicle body 111 . The second vehicle body 112 is connected with a driving device for driving the vehicle to rise and fall. The driving device includes a vertical Electric push rods, hydraulic cylinders or air cylinders are directly arranged on the second vehicle body 112, and the second vehicle body 112 is arranged on the top of the driving device. The lower running mechanism 13 and the lifting mechanism 14 are both arranged on the first vehicle body 111 , and the upper running mechanism 12 is arranged on the second vehicle body 112 .

As shown in FIG. 16 , the distance between the upper running mechanism 12 and the bottom of the vehicle body 11 can be achieved by sliding the upper running mechanism 12 on the vehicle body 11 . Specifically, the upper running mechanism 12 and the vehicle body 11 are slidably arranged, and a telescopic structure 113 is provided between the upper running mechanism 12 and the bottom of the vehicle body 11 . The preferred telescopic structure 113 is an electric push rod, a hydraulic cylinder or an air cylinder. The distance between the upper traveling mechanism 12 and the bottom of the vehicle body 11 can be changed by the telescopic structure 113 and the self-locking function of the telescopic structure 113 can limit the upper The relative position of the running gear 12 and the bottom of the vehicle body 11 .

1 to 6, the two beam transport trains are arranged on both sides of the guide beam 2, and the two beam transport trains are both provided with a support beam trolley 32 for consigning beam pieces and two beam transport trains. Mobile support mechanism. Each of the beam-carrying trains is provided with two beam-carrying trolleys 32 to ensure the balance of the beams being transported, and the two beam-carrying trolleys 32 and the two moving support mechanisms can follow the length of the beam-carrying train. direction move.

As shown in FIG. 13 , two gantry cranes 4 walk on top of the guide beam 2 to remove the beam to be replaced and place the beam to be replaced on the support beam trolley 32 of one of the beam-transporting trains, and to place the beam on the other. A beam piece for replacement on a special beam transport train is installed in the hole position of the frame to be replaced, and the moving support mechanism is used to place the gantry crane 4 on the longitudinal beam 22 or drive the gantry crane 4 to separate from the guide beam 2 .

The replacement beams of the present application are assembled in the beam yard, reducing the pollution to the construction site, and at the same time, the overall beam replacement of the double beams can be completed at one time, which increases the construction efficiency, and is conducive to the efficient use of the skylight point time operation. 2, the beam replacement process can realize beam replacement construction under various terrain and environmental conditions, and has a wide range of applications, especially for beam replacement construction in high piers, deep valleys and under bridges with water. Less pre-preparation is required on site, reducing the impact on existing lines.

In some embodiments, as shown in FIG. 17 and FIG. 18 , the mobile support mechanism is a gantry bracket 5 arranged on the special beam transporting train, and the gantry bracket 5 includes a base portion 51 for walking on the top of the special beam transporting train and a The support part 52 of the gantry crane 4 is supported, the base part 51 moves along the length direction of the special beam transport train, and the gantry crane 4 can be placed on the top of the support part 52 . A connecting portion 53 for driving the supporting portion 52 to rotate horizontally is provided between the base portion 51 and the supporting portion 52 , and the supporting portion 52 can be rotated to switch the position of the gantry crane 4 during transportation or working. Further optimally, the support portion 52 can be raised and lowered on the connection portion 53 , and the support portion 52 can be fixed by the limiting portion in its lifting height.

Specifically, the connecting portion 53 is arranged along the vertical direction, and the connecting portion 53 and the base portion 51 are rotatably arranged, the supporting portion 52 is arranged on the top of the connecting portion 53 , and the supporting portion 52 may be a bracket arranged on the top of the connecting portion 53 . The gantry crane 4 is placed on the bracket, and the connecting part 53 can be extended and retracted along its own length direction. A motor is arranged inside the base part 51 , and the output shaft of the motor is arranged vertically upward and is connected with the connecting part 53 . The rotation of the motor drives the connecting part 53 to rotate, and then drives the gantry crane placed on the top of the supporting part 52 4 rotation; the gantry crane 4 can also be pushed by external force, and then the connecting part 53 can be driven to rotate relative to the base part 51 to complete the adjustment. The connecting portion 53 can drive the gantry crane 4 to rise and fall through its own expansion and contraction, wherein the connecting portion 53 can be an electric push rod, a hydraulic cylinder or an air cylinder, with a simple structure and convenient operation. The self-locking function realizes its vertical positioning.

As shown in FIG. 19 , in the transport state, the gantry crane 4 is placed on the support portion 52, and the gantry crane 4 is rotated so that the length direction of the gantry crane 4 is consistent with the length direction of the beam transport train, thereby reducing the entire beam transport train in the transport state. The width of the connecting part 53 shrinks, reducing the height of the horizontal plane where the top surface of the gantry crane 4 is located, so that the special beam transport train can smoothly pass through the tunnel and other road sections.

7, 13 and 20, in order to facilitate the gantry support 5 to place the gantry crane 4 on the guide beam 2, both ends of the two longitudinal beams 22 of the guide beam 2 extend from the cross beam 21 to form the guide beam 23, The gantry bracket 5 drives the gantry crane 4 to move between the two guide beams 23 provided on the same side, and the gantry crane 4 is placed on the guide beam 23 through the lifting and rotation of the support part 52 or drives the gantry crane 4 to separate from the guide beam 2 . Specifically, as shown in FIG. 20 , after the gantry bracket 5 is moved between the two guide beams 23 , the extension of the connecting portion 53 drives the support portion 52 to rise, so that the height of the bottom surface of the gantry crane 4 is greater than the height of the guide beam 23 . The height of the plane the top is on. Rotate the gantry crane 4 so that the width direction of the gantry crane 4 is consistent with the length direction of the guide beam 2 . The connecting portion 53 is contracted, so that the bottom of the gantry crane 4 is supported on the guide beam 23 , so that the gantry crane 4 walks on the longitudinal beam 22 to perform the work of replacing the beam pieces.

Further optimally, as shown in FIG. 7 and FIG. 8 , the guide beam 23 is hingedly arranged with the longitudinal beam 22 , the guide beam 23 is connected with a first adjusting device 6 , and the first adjusting device 6 is used to drive the guide beam 23 along the guide beam 23 and the longitudinal beam 22 . The articulation of the longitudinal beam 22 swings.

Specifically, as shown in FIG. 8 , the guide beam 23 can swing relative to the longitudinal beam 22 in the horizontal direction, and the first adjustment device 6 is hingedly arranged between the guide beam 23 and the longitudinal beam 22 , in order to facilitate the installation of the first adjustment device 6 , the guide beam 23 swings toward the inner side of the longitudinal beam 22 along the horizontal direction. The first adjusting device 6 includes a first driving part and a first telescopic part, the first driving part is hingedly arranged on the longitudinal beam 22 , and the first telescopic part is hingedly arranged on the guide beam 23 . Conversely, the first driving part can also be hingedly arranged on the guide beam 23 , and the first telescopic part can be hingedly arranged on the longitudinal beam 22 . When in use, when the first telescopic part can be driven by the first driving part to expand and contract, the guide beam 23 and the longitudinal beam 22 can swing relative to each other. This design method does not occupy the space between the two longitudinal beams 22 and avoids affecting the replacement process of the beam pieces.

The guide beam 23 can also be pivoted in the vertical direction relative to the longitudinal beam 22 . Preferably, the guide beam 23 swings upward along the vertical direction, that is, the hinge position is arranged above the connection between the guide beam 23 and the longitudinal beam 22. When the guide beam 23 is unfolded, the guide beam 23 is parallel to the longitudinal beam 22, and the guide beam 23 is parallel to the longitudinal beam 22 through the guide beam. The contact surface of 23 with the longitudinal beam 22 and the hinge device provide support for the guide beam 23, reduce the stress of the adjusting device, and thus increase the service life of the adjusting device.

7 and 9, the present application adopts the hinge structure between the guide beam 23 and the longitudinal beam 22, so that the guide beam 23 can swing relative to the longitudinal beam 22, and the first adjusting device 6 drives the guide beam 23 during transportation. Swing, thereby shortening the length of the guide beam 2 or reducing the width of the end of the guide beam 2 in its lateral direction, avoiding the phenomenon of overrun when passing through the curved section of the small radius curve, and ensuring the normal transportation of the guide beam 2 .

In other embodiments, the mobile support mechanism includes a running part for walking on the special train for transporting beams and a lifting part arranged above the running part, the lifting part is used to support the gantry crane 4, and the lifting part can be opposite to the running part Move along the length direction of the special train for transporting beams, and the horizontal height of the top of the lifting part is greater than or equal to the horizontal height of the top surface of the guide beam 2 . The moving support mechanism moves to the end of the guide beam 2. Due to the blocking of the beam 21, the running part cannot continue to move forward. Therefore, the position of the gantry crane 4 is changed by the movement of the lifting part, and then the gantry crane 4 is placed on the longitudinal beam 22. top.

Wherein, when the top of the lift portion is at the same level as the top surface of the guide beam 2, the lift portion moves toward the guide beam 2, so that the end of the lift portion and the end of the guide beam 2 The gantry crane 4 is moved to the longitudinal beam 22 to perform the corresponding replacement of the beam pieces.

When the horizontal height of the top of the lifting portion is greater than the horizontal height of the top surface of the guide beam 2, the lifting portion moves toward the guide beam 2, so that the lifting portion moves to the top of the guide beam 2, and then the gantry crane is moved. 4 is placed above the stringer 22. The lift part of this design is provided with a support plate, and the bottom surface of the support plate is located at a level greater than the horizontal height of the top surface of the guide beam 2, so that the support plate can move to the top of the guide beam 2, and then the gantry crane 4 passes through The pallet moves above the guide beam 2 .

In order to provide enough operating space for the beam replacement, the width of the guide beam 2 is generally larger than that of the railway, which results in a larger width of the guide beam 2. During the transportation process, the phenomenon of exceeding the limit may occur, affecting the performance of the guide beam 2. normal shipping. Therefore, both ends of the two beams 21 can be hingedly arranged with the longitudinal beam 22, and the longitudinal beam 22 is connected with a second adjusting device 61, and the second adjusting device 61 is used to drive the longitudinal beam 22 along the hinged connection with the beam 21. When the guide beam 2 is transported, the guide beam 2 shrinks, the guide beam transfer vehicle 1 drives the guide beam 2 in the retracted state to move, and the guide beam transfer vehicle 1 drives the guide beam 2 to move to the top of the hole to be replaced. , the guide beam 2 is unfolded, and the distance between the two longitudinal beams 22 of the unfolded guide beam 2 is greater than the width of the beam pieces, and the upper traveling mechanism 12 travels on the unfolded guide beam 2 .

In some embodiments, the second adjustment device 61 includes a telescopic member hingedly arranged between the cross beam 21 and one of the longitudinal beams 22 . The telescopic element includes a second driving part and a second telescopic part, the second driving part is arranged on the longitudinal beam 22, the second telescopic part is detachably connected to the cross beam 21, and the second telescopic part and the second driving part are arranged The position and the setting angle can meet the telescopic requirements, that is, when the second telescopic portion is driven to expand and contract by the second driving portion, the longitudinal beam 22 and the transverse beam 21 can swing relative to each other. When the guide beam 2 is contracted, the end of the second telescopic part is connected to the cross beam 21, and the second telescopic part is driven to move by the second driving part, so that the longitudinal beam 22 and the cross beam 21 are relatively swayed, thereby causing the two longitudinal beams 22 is close to realize the shrinkage of the guide beam 2 . When the guide beam 2 moves to the working position, the second driving part drives the second telescopic part to move in the opposite direction, thereby causing the two longitudinal beams 22 to move away, completing the unfolding of the guide beam 2, and proceeding to the next step. The second telescopic part is separated from the beam 21, and the second telescopic part is contracted by the second driving part, so as to avoid affecting the hoisting process of the beam.

In other embodiments, the upper running mechanism 12 and the vehicle body 11 may also be arranged in a rotating manner, and the upper running mechanism 12 is connected with the longitudinal beam 22 . The rotation drives the longitudinal beam 22 to rotate relative to the transverse beam 21 to complete the unfolding and retracting process of the guide beam 2 . Specifically, the upper running mechanism 12 includes a turntable 121 rotatably arranged on the vehicle body 11 and a boom 122 symmetrically arranged on both sides of the turntable 121 . In the running wheel assembly 123 , the bottom of the boom 122 is provided with a connecting rod 124 for connecting with the longitudinal beam 22 . When in use, the connecting rod 124 is connected to the longitudinal beam 22, the boom 122 is pushed to rotate by external force, and then the longitudinal beam 22 is driven to rotate through the connecting rod 124 to complete the expansion and retraction of the guide beam 2. At the same time, the upper walking mechanism can also be used. The lifting and lowering of 12 can realize the lifting and lowering of guide beam 2 . Specifically, the outer circumference of the vehicle body 11 is slidably provided with a movable sleeve 125 along the vertical direction, and the turntable 121 is rotatably arranged on the outer circumference of the movable sleeve 125 . Through this design, the upper running mechanism 12 and the bottom edge of the vehicle body 11 can be connected to each other. Moving in the vertical direction, the upper running mechanism 12 can rotate relative to the vehicle body 11 at the same time. Specifically, a telescopic component may be provided between the movable sleeve 125 and the lower running mechanism 13 , and preferably, the telescopic component is an electric push rod, a hydraulic cylinder or an air cylinder.

Wherein, the running wheel assembly 123 includes a running wheel bracket arranged at the end of the boom 122, the running wheel bracket is provided with a running wheel for running on the unfolded guide beam 2, the boom 122 is provided with a motor, and the motor is connected with The running wheels are connected by a wheel group transmission. Specifically, a driving pulley is provided on the output shaft of the motor, a driven pulley is provided on the running wheel, the wheel set includes a plurality of guide pulleys, and the belt is sleeved on the outer circumference of the driving pulley and the driven pulley, and The belt pulley is used to tighten the belt and increase the transmission effect of the belt. This design method can drive two or more walking wheels to walk synchronously through one motor, which increases the stability during walking.

As shown in FIG. 6 , the special beam transport train of the present application includes a tractor head 33 and a body 34 . The top of the body 34 is provided with two tracks along its length for the trolley 32 and the gantry bracket 5 to travel. The top of the vehicle body 34 is also provided with a plurality of temporary supports for temporarily supporting the beam pieces, each temporary support is arranged between the two rails, and the temporary supports can be extended and retracted in the vertical direction. Under the non-tunnel section, the beam pieces are supported on the top of the piggy beam trolley 32; when passing through the tunnel, the temporary support on the special beam transport train lifts up the beam pieces, so that the beam pieces are separated from the piggy beam trolley 32, and after the piggy beam trolley 32 avoids, The temporary supports are lowered, and the beams are supported on the special train for transporting beams. In the present application, by setting a temporary support member on the special beam transport train, the position supported by the beam piece in the transport state is changed, that is, when passing through the tunnel section, the beam piece is supported on the special beam transport train, and the plane on which the top of the beam piece is located is lowered. height, to avoid the phenomenon that the tunnel cannot be passed.

For the convenience of description, the two beam transport trains are divided into a first beam transport train 3 and a second beam transport train 31 . The rack changing method of the rack changing equipment provided by this application is as follows:

Step 1: Make preparations before construction, cut the rails and rail rows at both ends of the beam to be replaced, and because the equipment may occupy a certain limit after the installation is completed, it is necessary to rotate the catenary column of the beam spanning area to be replaced by 90 degrees. degree and the contact line is dialed.

Step 2, as shown in FIG. 1, the guide beam transfer vehicle 1 drives the guide beam 2 to move above the holes to be replaced, the first beam transport train 3 drives the two gantry cranes 4 to move to one side of the guide beam 2, the second The special beam transport train 31 drives the replacement beam to move to the other side of the guide beam 2 . Wherein, the first beam transport train 3 described here moves to one side of the guide beam 2, and the second beam transport train 31 moves to the other side of the guide beam 2 refers to the state after transportation, that is, the final position, It does not refer to the order in which the first special beam transport train 3, the guide beam transfer vehicle 1 and the second special beam transport train 31 move. Preferably, the second beam transporting train 31 , the guide beam transfer vehicle 1 and the first beam transporting train 3 are arranged in sequence to approach the construction site synchronously to increase the placement efficiency.

Specifically, the gantry support 5 walking on the first beam transport train 3 drives the gantry crane 4 to rotate to the transport position, so that the length direction of the gantry crane 4 is consistent with the length direction of the first beam transport train 3, reducing the transport time of the first beam transport train 3 The distance of the width in the process to avoid the phenomenon of exceeding the limit. When the special train for transporting beams travels on a normal road section, the beam pieces are supported by the beam trolley 32 . When passing through the tunnel section, the temporary support on the second beam transport train 31 lifts up to support the beam, so that the beam is separated from the supporting beam trolley 32. After the supporting beam trolley 32 is avoided, the temporary support descends, and the beam is supported during the transport. On the beam train, the height of the second beam train 31 is reduced to avoid scratching the tunnel wall.

Preferably, the gantry crane 4 includes a bearing portion provided with a hoisting system and a first leg portion fixed on both sides of the lower end of the bearing portion, a second leg portion is provided below the first leg portion, and the first leg portion is connected to There are drivers. The driving part is used to drive the first leg part to move up and down on the second leg part, and the first leg part is provided with a connecting member for connecting with the gantry bracket 5 . During transportation, the gantry bracket 5 is retracted, and the first leg is moved downward relative to the second leg, thereby reducing the height of the gantry crane 4 and avoiding the problem of overrun. At the same time, the second leg is supported at The top of the first beam special train 3 increases the stability of the transportation process.

Step 3, as shown in FIG. 2 , the guide beam 2 is lowered, the two beams 21 of the guide beam 2 are respectively supported on the existing beams on both sides of the hole to be replaced, and the two longitudinal beams 22 of the guide beam 2 are formed between the two longitudinal beams 22. The space for beams to pass through, as shown in FIG. 12 , the guide beam transfer vehicle 1 walks on the longitudinal beam 22 and moves across the cross beam 21 to the end of the guide beam 2 close to the second beam transport train 31 .

Specifically, as shown in FIG. 12 , the guide beam transfer vehicle 1 moves upward relative to the upper traveling mechanism 12, so that the horizontal height of the bottom of the guide beam transfer vehicle 1 is greater than the horizontal height of the top surface of the beam 21, and then crosses the beam 21, to achieve avoidance. Wherein, when the guide beam transfer vehicle 1 moves to the top of the guide beam 23 close to the second beam transport train 31, the guide beam transfer vehicle 1 can move downward relative to the upper travel mechanism 12, so that it travels on the second beam transport train On the other hand, the guide beam transfer vehicle 1 can return to the guide beam 2 from the second beam transport train 31 .

Step 4, as shown in FIG. 3 , the two gantry cranes 4 are respectively placed on the guide beam 2 through the two gantry brackets 5, and the two gantry cranes 4 walk on the top of the longitudinal beam 22 for removing the beam to be replaced. The first special transport train and the second special transport train both have supporting beam trolleys 32 , and two gantry cranes 4 place the dismantled beam pieces on the supporting beam trolley 32 in the first special beam transporting train 3 .

Specifically, the gantry bracket 5 drives the gantry crane 4 to walk between the two guide beams 23, the gantry bracket 5 supports the gantry crane 4 upward, and at the same time, the second leg of the gantry crane 4 moves upward relative to the first leg, so that the second leg The level of the bottom surface of the outrigger is higher than the level of the top of the guide beam 23, the gantry bracket 5 drives the gantry crane 4 to rotate to the working position, and the second leg is lowered relative to the first leg, so that the gantry crane 4 supports and Walk on the guide beam 23 .

In the process of dismantling the beam pieces, the beam pieces to be replaced are lifted by two gantry cranes 4, and the beam pieces are driven to move in the direction of the first beam transport train 3, and the two load beam trolleys 32 on the first beam transport train 3 Move to the position close to the guide beam 2, and the gantry crane 4 close to the first beam transport train 3 lowers the end of the beam piece, so that the beam piece is supported on the support beam trolley 32 away from the guide beam 2, and the support beam trolley 32 and The gantry crane 4 away from the first beam transport train 3 moves synchronously until the gantry crane 4 away from the first beam transport train 3 moves to a position close to the end of the guide beam 2, and lowers the beam piece so that the other end of the beam piece is supported near the guide beam 2. On the supporting beam trolley 32 of the beam 2, after the two supporting beam trolleys 32 drive the beam piece to move to the designated position on the first beam transport train 3, the first beam transport train 3 drives the beam piece to move to the beam piece placement area.

Step 5, as shown in FIG. 4 , the guide beam transfer vehicle 1 passes through the gantry crane 4 and moves to the end of the guide beam 2 close to the first beam transport train 3, and the carrying beam trolley 32 cooperates with the two gantry cranes 4 to be in the second beam transport train 31. The replacement beams above are hoisted, and two gantry cranes 4 erect the hoisted beams at the holes to be replaced.

Specifically, the tracks on which the guide beam 2 running vehicle and the gantry crane 4 travel are diverged from each other, so that the guide beam transfer vehicle 1 can pass through the gantry crane 4 . Before installing the new beam, the guide beam transfer vehicle 1 moves upward relative to the upper traveling mechanism 12, so that the horizontal height of the bottom of the guide beam transfer vehicle 1 is greater than the horizontal height of the top surface of the cross beam 21, and then crosses the cross beam 21, so that The guide beam transfer vehicle 1 moves to the end of the guide beam 2 close to the first beam transport train 3 .

When installing the new beam, the replacement beam is placed on the two supporting beam trolleys 32 on the second special transport train, the two supporting beam trolleys 32 are supported at both ends of the beam, and the two gantry cranes 4 are moved to the guide beam 2. Close to one end of the second beam transport train 31, lift the end of the beam sheet close to the guide beam 2 by the gantry crane 4 far away from the second beam transport train 31, and synchronously move towards the first transport beam trolley 32 away from the guide beam 2. The direction of the beam train 3 is moved until the carrying beam trolley 32 moves to a position close to the end of the guide beam 2, the gantry crane 4 close to the second beam transport train 31 lifts the beam piece, and the two gantry cranes 4 move on the guide beam 2 , and erect the hoisted beams in the holes to be replaced.

When the beam pieces continue to be removed, the guide beam transfer vehicle 1 drives the guide beam 2 and the gantry crane 4 located at the top of the guide beam 2 to move to the top of the next hole to be replaced, and the first beam transport train 3 transports the removed beam pieces to the After the designated position, it returns to one side of the guide beam 2 , and the second beam transport train 31 transports the beam pieces for replacement and returns to the other side of the guide beam 2 . Continue to complete the beam replacement work according to the above steps 3 to 5.

As shown in FIG. 5 , when the dismantling work is completed, the first special beam transport train 3 drives the dismantled beam pieces to move to the designated position, and the two gantry cranes 4 move towards the direction of the second beam transport train 31, and pass the second beam transport train 31. The gantry bracket 5 on the special train 31 drives the gantry crane 4 to disengage from the guide beam 2, and the second beam-moving special train 31 drives the gantry crane 4 to move to a designated position.

Specifically, after the gantry bracket 5 travels between the two guide beams 23 disposed close to the second beam transport train 31 , the gantry crane 4 moves to a position corresponding to the gantry bracket 5 . The gantry support 5 rises, and at the same time, the first leg of the gantry crane 4 is lowered relative to the second leg, so that the gantry support 5 is supported on the connecting member of the gantry crane 4, and the second leg is raised relative to the first leg. The gantry crane 4 is separated from the guide beam 2, and after the gantry bracket 5 drives the gantry crane 4 to rotate to the transport position, the gantry bracket 5 descends. At the same time, in order to increase the stability during transportation, the second leg of the gantry crane 4 is relatively The lower part is lowered, so that the second leg part is supported on the top of the second beam transport train 31 .

After the construction is completed, the cut rails will be welded, the ballast will be filled, and the ballast will be tamped with a tamping car, the catenary will be restored, and the bridge replacement will be completed.

During the beam replacement process, when the old beam is disassembled, the first beam transport train 3 can transport the old beam to the beam placement area, and then return to the side of the guide beam 2 for the next transportation. Similarly, after the gantry crane 4 lifts the replacement beams on the second beam transport train 31, the second beam transport train 31 can move to the new beam stacking area to take the new beam, and return to the other side of the guide beam 2. side. During this period, the gantry crane 4 completes the assembly of the beam pieces and performs the next beam piece replacement. The whole operation process can be completed synchronously, which increases work efficiency, and is conducive to efficient use of skylight point time operations. At the same time, it has a wide range of applications and can realize beam replacement construction under various terrain and environmental conditions, especially for high piers, deep valleys and water environments under bridges. The beam replacement construction has great advantages; it requires less preparatory conditions on the construction site and has little impact on the existing lines; the new beam has completed all assembly procedures in the beam yard, and the construction site pollution is small during the beam replacement process. , in line with the construction concept of green environmental protection.

Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present utility model, but not to limit them; although the present utility model has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that: It is still possible to modify the technical solutions recorded in the foregoing embodiments, or perform equivalent replacements to some of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions depart from the spirit of the technical solutions of the embodiments of the present invention and range.

Claims (10)

1. The utility model provides a whole hole roof beam trades a frame equipment which characterized in that includes:

the guide beam comprises two longitudinal beams and two cross beams used for connecting the two longitudinal beams, the two cross beams are respectively supported on the existing bridge at two sides of the hole site to be replaced, and the width between the two longitudinal beams is greater than that of the beam piece;

the two guide beam transfer vehicles comprise vehicle bodies used for driving the guide beams to walk on the existing bridge, the vehicle bodies are provided with upper walking mechanisms used for walking on the top of the longitudinal beams, and the upper walking mechanisms can move in the vertical direction relative to the bottom of the vehicle bodies;

the two special beam carrying lines are arranged on two sides of the guide beam, and are provided with beam carrying trolleys for carrying beam pieces and two movable supporting mechanisms walking on the special beam carrying lines;

the two gantry cranes run on the top of the guide beam and are used for dismantling beam pieces to be replaced and placing the beam pieces to be replaced on the beam carrying trolley special for one beam transport column and placing the beam pieces for replacement placed on the other beam transport column in a hole site to be replaced, and the movable supporting mechanism is used for placing the gantry crane on the longitudinal beam or driving the gantry crane to be separated from the guide beam.

2. The full aperture beam rack replacing equipment according to claim 1, wherein the moving support mechanism is a gantry support arranged on the beam transport column, the gantry support comprises a base part used for walking on the top of the beam transport column and a support part used for supporting the gantry crane, a connecting part used for driving the support part to rotate horizontally is arranged between the base part and the support part, and the support part realizes the position switching of the gantry crane in a transportation or working state through rotation.

3. The full-aperture beam rack replacing device according to claim 2, wherein the supporting part is arranged on the connecting part in a lifting manner, and the lifting height of the supporting part is fixed by the limiting part.

4. The full aperture beam rack replacing device according to claim 3, wherein two ends of each longitudinal beam extend out of the cross beam to form a guide beam, the gantry support drives the gantry crane to move between the two guide beams arranged on the same side, and the gantry crane is placed on the guide beams or driven to be separated from the guide beams through the lifting and rotating of the supporting parts.

5. The full aperture beam rack replacing equipment according to claim 4, wherein the guide beam is hinged with the longitudinal beam, a first adjusting device is connected to the guide beam, and the first adjusting device is used for driving the guide beam to swing along the hinged position of the guide beam and the longitudinal beam.

6. The full aperture beam rack replacing equipment according to claim 1, wherein the moving support mechanism comprises a walking part and a lifting part, the walking part is used for walking on the beam transport special column, the lifting part is arranged above the walking part and is used for supporting the gantry crane, the lifting part can move relative to the walking part along the length direction of the beam transport special column, and the horizontal height of the top of the lifting part is greater than or equal to the horizontal height of the top surface of the guide beam.

7. The full aperture beam rack replacing equipment according to claim 1, wherein two ends of each of the two cross beams are hinged to the longitudinal beam, and a second adjusting device is connected to the longitudinal beam and used for driving the longitudinal beam to swing along the hinged position of the longitudinal beam and the cross beam.

8. The apparatus according to claim 7, wherein the second adjustment means comprises a telescopic member hingedly disposed between the cross member and one of the longitudinal members.

9. The full-aperture beam rack replacing equipment as claimed in claim 2, wherein the beam transporting column comprises a traction vehicle head and a vehicle body, and two rails for the beam carrying trolley and the gantry support to travel are arranged at the top of the vehicle body along the length direction of the vehicle body.

10. The full aperture beam rack-changing apparatus according to claim 9, wherein a plurality of temporary supports for temporarily supporting the beam piece are further provided on the top of the vehicle body, each of the temporary supports is provided between two of the rails, and the temporary supports are vertically retractable.

Images