CN110747758B

CN110747758B - Frame replacing equipment and frame replacing method for whole-hole beam

Info

Publication number: CN110747758B
Application number: CN201911175593.4A
Authority: CN
Inventors: 王治斌; 杨岳勤; 王清明; 周光忠; 梁志新; 蒋中明
Original assignee: China Railway Fifth Survey and Design Institute Group Co Ltd
Current assignee: China Railway Fifth Survey and Design Institute Group Co Ltd
Priority date: 2019-11-26
Filing date: 2019-11-26
Publication date: 2024-09-13
Anticipated expiration: 2039-11-26
Also published as: CN110747758A

Abstract

The application relates to the technical field of bridge frame replacement, and provides whole-hole beam frame replacement equipment and a frame replacement method. The frame replacing equipment comprises guide beams, two guide beam transfer vehicles, two special beam transfer columns, two telescopic pieces and two gantry cranes. The frame changing method comprises the following steps: the two transports Liang Zhuanlie and the guide beam move to the working position; the guide beam is lowered, and the gantry crane puts the telescopic piece on the guide beam transfer trolley; the guide beam transfer trolley moves to one end of the guide beam; the old beam is removed by the gantry crane and is placed on a first beam transporting special column; the guide beam transfer trolley moves to the other end of the guide beam, and the gantry crane erects the beam sheet at the hole site of the frame to be replaced. When the beam replacement device is used, the beam replacement sheet is assembled in a beam field, so that the pollution to a construction site is reduced, the whole beam replacement process can be completed at one time, the construction efficiency is improved, the beam replacement construction under various terrain environment conditions is realized through the beam replacement process of the gantry crane on the guide beam, the application range is wide, and meanwhile, the requirement on the early preparation of the construction site is less.

Description

Frame replacing equipment and frame replacing method for whole-hole beam

Technical Field

The invention relates to the technical field of bridge frame replacement equipment, in particular to whole-hole beam frame replacement equipment and a frame replacement method.

Background

Along with the increase of the running time of the railway and the highway in China, the aging problem of the bridge has increasingly prominent safety influence on the operation of the existing line (the established line). Some bridges are not long-lived in construction because of the continuous acceleration of existing lines, particularly main trunks, and the need to pass heavy trains, resulting in inadequate strength or rigidity and having to be replaced. Some bridges are also produced with partial damage each year due to poor manufacturing and installation quality.

In addition, in the past railway manufacture of China, a large number of steel beams are used, the service lives of the steel beams are obviously lower than that of concrete beams, the maintenance workload of the steel beams is great, and some places cannot be maintained at all, so that part of the steel beams need to be replaced before the steel beams reach the strength life. Therefore, it is urgent to study one or several safe and reliable existing railway line bridge frame changing methods for different bridge forms.

The existing railway line bridge frame changing method in China comprises a full-closed existing line bridge frame changing method and an intermittent closed existing line bridge frame changing method.

The idea of the totally-enclosed frame-changing beam is to build temporary lines or temporary bridges near the existing railway bridges; the train passes through temporary convenient lines or temporary bridges, and bridge replacement is mainly carried out by using a bridge girder erection machine. The operation mode is suitable for bridges in river channels or valleys without stopping driving, but a stool line or a stool bridge needs to be built, a line needs to be restored after frame replacement, the cost is high, the speed is limited when a train passes through the stool line (the stool bridge) for a long time, the point construction is needed when the stool line is in butt joint with a positive line and the positive line is in butt joint with the positive line, meanwhile, the line is frequently disturbed, the instability of a roadbed and a ballast bed is caused, the speed limiting time is long, and the influence on the operation of the positive point of the train is large; the construction and dismantling of the toilet line has great influence on the environment.

The idea of intermittently closing the frame-changing beam is to implement the frame-changing operation of the bridge by using the schemes such as gantry crane or bracket transverse movement and the like by adjusting the train operation diagram or train operation gap. The operation mode does not need to build a stool line, has low cost and 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 normal operation can be restored within a short time after the frame replacement is completed. The preparation work is carried out on line, has no interference to the existing line, but cannot be applied to bridges above valleys or rivers. The intermittent sealing for replacing the existing line bridge has no convenient line for the vehicle to detour, so the safety and reliability of the equipment and the sealing time become the important matters of the scheme.

For the problems, a set of brand new railway girder bridge frame-changing construction technology and equipment which can be suitable for various bridge pier heights or under-bridge terrains and landforms are urgently needed to be provided, a new thought and method are provided for bridge frame-changing engineering, and the integral frame-changing construction of the whole-hole simply supported girders, track panels and turnouts is ensured to be safely and efficiently completed in a 'skylight point' on the premise of lowest interference to original line equipment.

Disclosure of Invention

In order to solve the technical problems or at least partially solve the technical problems, the invention provides a whole-hole beam frame replacing device and a frame replacing method.

The whole Kong Lianghuan frame device comprises:

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

The two guide beam transfer vehicles comprise a vehicle body for driving the guide beams to walk on the existing bridge, an upper traveling mechanism for walking on the top of the longitudinal beam is arranged on the vehicle body, and the upper traveling mechanism can move along the vertical direction relative to the bottom of the vehicle body;

Two transports Liang Zhuanlie arranged on two sides of the guide beam, wherein each transport beam is provided with two beam carrying trolleys for carrying beam sheets;

The two telescopic members can extend and retract along the vertical direction, a first installation position for installing the telescopic members is arranged on each beam carrying trolley, and a second installation position for placing the telescopic members is arranged on the guide beam transfer trolley;

The two gantry cranes walk on the top of the guide beam and are used for dismantling a beam piece to be replaced, placing the beam piece to be replaced on the two beam carrying trolleys of one beam transporting special column, and placing the beam piece for replacement placed on the other beam transporting special column on a frame hole site to be replaced;

The telescopic piece is placed at the first installation position and assembled with the beam carrying trolley to form a temporary gantry support, the temporary gantry support is used for placing the gantry crane on the longitudinal beam or driving the gantry crane to separate from the guide beam, and the gantry crane drives the telescopic piece to be converted into the first installation position and the second installation position.

Optionally, the beam carrying trolley comprises a base part for walking at the top of the beam transporting special column and a supporting part for placing the telescopic piece, wherein the top of the supporting part is provided with the first installation position, the supporting part and the base part are rotatably arranged, and the telescopic piece is detachably arranged on the supporting part.

Optionally, two both ends of two longerons all stretch out the crossbeam forms the guide beam, interim longeron support drives the gantry crane removes to between two that the homonymy set up the guide beam, through the flexible of extensible member with rotation of supporting part will the gantry crane is put on the guide beam or drive the gantry crane breaks away from the guide beam.

Optionally, the guiding beam is hinged with the longitudinal beam, a first adjusting device is connected to the guiding beam, and the first adjusting device is used for driving the guiding beam to swing along the hinge position of the guiding beam and the longitudinal beam.

Optionally, two both ends of the crossbeam all with the longeron articulates, be connected with second adjusting device on the longeron, second adjusting device is used for driving the longeron along its articulated department with the crossbeam swings.

Optionally, go up running gear with the automobile body rotates the setting, go up running gear including rotating the carousel that sets up on the automobile body and symmetry setting are in the davit of carousel both sides, the both ends of davit are equipped with and are used for after expanding the travelling wheel subassembly of walking on the nose girder, the bottom of davit be equipped with be used for with the connecting rod that the longeron is connected.

Optionally, be equipped with on the automobile body and be used for walking on existing bridge down running gear and be used for supporting the lift mechanism of nose girder, running gear's top is equipped with down the second installation position.

Optionally, the special beam transporting column comprises a traction head and a car body, and two tracks for the beam carrying trolley to walk are arranged at the top of the car body along the length direction of the car body.

Optionally, a plurality of supporting members for temporary supporting beam plates are further arranged on the top of the vehicle body, each supporting member is arranged between two rails, and the supporting members can stretch and retract along the vertical direction.

The frame replacing method of the whole hole beam comprises the following steps:

the method comprises the steps that firstly, a guide beam transfer trolley drives guide beams to move to the position above a frame hole to be replaced, a telescopic piece is placed on two beam carrying trolleys on a first special beam transporting column, a gantry crane is supported on the top of the telescopic piece, the first special beam transporting column drives the two gantry cranes to move to one side of the guide beams, and a second special beam transporting column drives a beam sheet for replacement to move to the other side of the guide beams;

Step two, the guide beam is lowered, two cross beams of the guide beam are respectively supported on existing bridges at two sides of a hole site of a frame to be replaced, a gantry crane is placed on the guide beam through a beam carrying trolley and a telescopic piece, the telescopic piece is separated from the beam carrying trolley, the gantry crane drives the telescopic piece to cross the cross beams, and the telescopic piece is placed on a guide beam transfer trolley;

Step three, the guide beam transfer trolley drives the telescopic piece to walk on the longitudinal beam of the guide beam and to move to one end, close to the second transfer Liang Zhuanlie, of the guide beam across the cross beam;

removing beam pieces to be replaced through two gantry cranes, and placing the removed beam pieces on a beam carrying trolley which is positioned on a first beam transporting special line by the two gantry cranes;

and fifthly, the guide beam transfer trolley drives the telescopic piece to pass through the gantry crane to move to one end of the guide beam close to the first beam transfer special column, the beam carrying trolley is matched with the two gantry cranes to hoist the beam sheet for replacement on the second beam transfer special column, and the two gantry cranes are used for erecting the lifted beam sheet at the position to be replaced.

Compared with the prior art, the technical scheme provided by the embodiment of the application has the following advantages:

in the using process of the girder erecting equipment, the girder sheets for replacement are assembled in a girder field, so that the pollution to a construction site is reduced, meanwhile, the whole girder replacement of double girders can be completed at one time, the construction efficiency is increased, the time operation of a skylight point is effectively utilized, the girder replacement process is carried out on a guide girder through a gantry crane, the girder replacement construction under various terrain environment conditions can be realized, the application range is wide, the requirement on the early preparation of the construction site is less, and the influence on the existing line is reduced.

Drawings

FIG. 1 is a schematic illustration of a guide beam, a first transport Liang Zhuanlie, and a second transport Liang Zhuanlie moving to a job site in accordance with one embodiment of the present invention;

FIG. 2 is a schematic illustration of a guide beam in place in an embodiment of the present invention;

FIG. 3 is a schematic illustration of a bridge to be replaced removed by a gantry crane in an embodiment of the invention;

FIG. 4 is a schematic view of a bridge for replacement installed by a gantry crane in an embodiment of the present invention;

FIG. 5 is a schematic illustration of the bridge after replacement is completed;

FIG. 6 is a schematic diagram of a carriage Liang Zhuanlie in accordance with one embodiment of the present invention;

FIG. 7 is a schematic view of a variable width guide beam in accordance with one embodiment of the present invention;

FIG. 8 is a schematic view of a variable width guide beam with a first adjustment device according to an embodiment of the present invention;

FIG. 9 is a schematic view of a variable width guide beam with a second adjustment device according to an embodiment of the present invention;

FIG. 10 is a schematic illustration of a truck walking on a variable width guide beam in an expanded state in accordance with an embodiment of the present invention;

FIG. 11 is a schematic view of a gantry crane for dismounting a bridge from a guide beam according to an embodiment of the present invention;

FIG. 12 is a schematic view of a nose girder transfer truck in accordance with one embodiment of the present invention;

FIG. 13 is a schematic view of a beam transfer vehicle employing a first body and a second body in combination in accordance with an embodiment of the present invention;

FIG. 14 is a schematic view of a telescopic structure provided on a guide beam transfer car according to an embodiment of the present invention;

FIG. 15 is a schematic view of a telescoping member placed on a nose girder transfer truck in accordance with one embodiment of the present invention;

figure 16 is a schematic illustration of the placement of the telescoping members on the beam carrying cart in an embodiment of the invention.

Reference numerals:

1. A guide beam transfer vehicle; 11. a vehicle body; 111. a first vehicle body; 112. a second vehicle body; 113. a telescopic structure; 12. an upper travelling mechanism; 121. a turntable; 122. a suspension arm; 123. a running wheel assembly; 124. a connecting rod; 13. a lower traveling mechanism; 131. a bottom plate; 132. a walking wheel; 14. a lifting mechanism; 141. a support plate; 2. a guide beam; 21. a cross beam; 22. a longitudinal beam; 23. a guide beam; 3. a first transport Liang Zhuanlie; 31. a second conveyor Liang Zhuanlie; 32. carrying a girder trolley; 33. traction vehicle head; 34. a vehicle body; 4. a gantry crane; 5. a first adjusting device; 51. a second adjusting device; 6. a telescoping member.

Detailed Description

In order that the above-recited objects, features and advantages of the present invention can be more clearly understood, a more particular description of the invention will be rendered by reference to specific embodiments thereof which are illustrated in the appended drawings. It is to be understood that the depicted embodiments are some, but not all, embodiments of the present invention. The specific embodiments described herein are to be considered in an illustrative rather than a restrictive sense. All other embodiments, which are obtained by a person skilled in the art based on the described embodiments of the invention, fall within the scope of protection of the invention.

As shown in fig. 1 to 6, the whole-hole Liang Huan bridge provided by the embodiment of the application comprises a guide beam 2, two guide beam transfer vehicles 1, two special beam transport columns, two telescopic pieces 6 and two gantry cranes 4.

As shown in fig. 7, the guide beam 2 includes two longitudinal beams 22 and two cross beams 21 for connecting the two longitudinal beams 22, the two cross beams 21 are respectively supported on existing bridges at two sides of a hole site of a frame to be replaced, and as shown in fig. 10, the width between the two longitudinal beams 22 is larger than the width of a beam sheet, so that the gantry crane 4 can walk on the top of the longitudinal beam 22, and the beam sheet replacement process is completed on the longitudinal beam 22. Specifically, the two stringers 22 are outside the vertical plane in which the edge portions of the stringers lie, avoiding affecting the disassembly of the old stringers and the installation of the new stringers.

As shown in fig. 12, the two guide beam transfer vehicles 1 comprise a vehicle body 11 for driving the guide beams 2 to travel on the existing bridge, an upper traveling mechanism 12 for traveling on the top of the longitudinal beam 22 is arranged on the vehicle body 11, and the upper traveling mechanism 12 can move in the vertical direction relative to the bottom of the vehicle body 11. The relative sliding of the upper traveling mechanism 12 can move along the vertical direction relative to the bottom of the vehicle body 11 on the premise that the position of the vehicle body 11 in the vertical direction is unchanged; or the bottom of the vehicle body 11 can move in the vertical direction relative to the upper running mechanism 12 on the premise that the position of the upper running mechanism 12 in the vertical direction is unchanged. Preferably, the vehicle body 11 is formed in a columnar shape, and the volume of the vehicle body 11 is reduced.

As shown in fig. 12, a lower traveling mechanism 13 for traveling on an existing bridge is provided at the bottom of the vehicle body 11, and a lifting mechanism 14 for supporting the guide beam 2 is provided on the vehicle body 11. The lower traveling mechanism 13 comprises a bottom plate 131 and traveling wheels 132 arranged at the bottom of the bottom plate 131, the lifting mechanism 14 comprises supporting plates 141 symmetrically arranged at two sides of the vehicle body 11, the supporting plates 141 can be upwards turned over along the vertical direction or the supporting plates 141 can be horizontally stretched, in the transportation process, the supporting plates 141 are horizontally unfolded and used for supporting the guide beams 2, and after the guide beams move to a working position, the supporting plates 141 are folded or retracted, so that the guide beams 2 can be lowered to the working position. The guide beam 2 can be lowered by external equipment or the upper travelling mechanism 12 is connected with the guide beam 2, the guide beam 2 is driven to be lowered by the downward movement of the upper travelling mechanism 12, the equipment cost is saved, the use is convenient, and the guide beam 2 can be placed on the guide beam transfer trolley 1 in the same way.

The change of the distance between the upper running gear 12 and the bottom of the vehicle body 11 can be achieved by the extension and contraction of the vehicle body 11. Specifically, as shown in fig. 13, the vehicle body 11 includes a first vehicle body 111 and a second vehicle body 112 that is disposed on the first vehicle body 111 in a liftable manner, a driving device for driving the second vehicle body 112 to lift is connected to the second vehicle body 112, the driving device includes an electric push rod, a hydraulic cylinder or an air cylinder that is disposed vertically on the second vehicle body 112, and the second vehicle body 112 is disposed on top of the driving device. The lower traveling mechanism 13 and the lifting mechanism 14 are both provided on the first vehicle body 111, and the upper traveling mechanism 12 is provided on the second vehicle body 112.

The distance between the upper running gear 12 and the bottom of the vehicle body 11 can be achieved by the upper running gear 12 being slidably provided on the vehicle body 11. Specifically, as shown in fig. 14, the upper traveling mechanism 12 is slidably disposed between the vehicle body 11, and a telescopic structure 113 is provided between the upper traveling mechanism 12 and the bottom of the vehicle body 11. The telescopic structure 113 is preferably 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 through the telescopic structure 113, and the relative position between the upper traveling mechanism 12 and the bottom of the vehicle body 11 can be limited through the self-locking function of the telescopic structure 113.

As shown in fig. 1 to 6, two shipments Liang Zhuanlie are provided on both sides of the guide beam 2, each of the shipments is provided with two beam-carrying trolleys 32 for carrying beam pieces, and the beam-carrying trolleys 32 are movable along the length direction of the shipments.

The two telescopic members 6 can be telescopic along the vertical direction, as shown in fig. 16, a first installation position for installing the telescopic members 6 is arranged on each beam carrying trolley 32, and a second installation position for placing the telescopic members 6 is arranged on the guide beam transfer trolley 1, as shown in fig. 15. Preferably, the telescopic piece 6 is an electric push rod, an air cylinder or an oil cylinder, and the top of the telescopic piece 6 can be locked relative to the bottom through the self-locking function. Wherein, the first mounting position can be formed by a first mounting hole arranged at the top of the beam carrying trolley 32, thereby increasing the positioning accuracy of the telescopic piece 6 and the firmness in the use process. The top of running gear 13 is equipped with the second installation position down, and the top of bottom plate 131 is equipped with the second installation position that is used for placing extensible member 6 promptly, and specifically, the second installation position can be formed by the second mounting hole that sets up on bottom plate 131, increases the accuracy that extensible member 6 was fixed a position, simultaneously, prevents that nose girder transfer car (buggy) 1 from rocking in moving the in-process extensible member 6.

As shown in fig. 11, two gantry cranes 4 walk on top of the guide beam 2 for removing and placing beam pieces to be replaced on two beam carrying trolleys 32 of one beam transport train, and placing replacement beam pieces placed on the other beam transport train on the frame hole site to be replaced.

The telescopic piece 6 is placed at the first installation position and assembled with the beam carrying trolley 32 to form a temporary gantry bracket, the temporary gantry bracket is used for placing the gantry crane 4 on the longitudinal beam 22 or driving the gantry crane 4 to separate from the guide beam 2, the conversion between the working position and the transport position of the gantry crane 4 is completed, and the telescopic piece 6 is driven to be converted into the first installation position and the second installation position by the gantry crane 4. Specifically, after the temporary gantry support supports the gantry crane 4 on the guide beam 2, the beam carrying trolley 32 is separated from the telescopic piece 6, the gantry crane 4 is connected with the telescopic piece 6 and drives the telescopic piece 6 to move to the second installation position of the guide beam transfer trolley 1 across the cross beam 21, at the moment, the gantry crane 4 lifts the disassembled beam piece to be replaced on the two beam carrying trolleys of the first beam carrying special column 3, and the telescopic piece 6 is driven to move through the guide beam transfer trolley 1, so that the replacement of the beam piece is prevented from being influenced. After the beam sheet replacement is completed, the telescopic piece 6 can be put on the beam carrying trolley 32 of the second conveyor Liang Zhuanlie through the gantry crane 4 to form a new temporary gantry support, the gantry crane 4 is separated from the guide beam 2 through the temporary gantry support, and the gantry crane 4 is transported through the second conveyor Liang Zhuanlie.

In the using process of the girder erecting equipment, the girder sheets for replacement are assembled in a girder field, so that the pollution to a construction site is reduced, meanwhile, the whole girder replacement of double girders can be completed at one time, the construction efficiency is increased, the time operation of a skylight point is effectively utilized, the girder replacement process is carried out on the guide girder 2 through the gantry crane 4, the girder replacement construction under various topography environment conditions can be realized, the application range is wide, the requirement on the early preparation of the construction site is less, and the influence on the existing line is reduced. The arrangement mode has the advantages of simple structure, few parts and cost saving.

The beam carrying trolley 32 of the application comprises a base part for walking on the top of a beam carrying special column and a supporting part for placing the telescopic piece 6, wherein the first mounting hole is arranged on the top of the supporting part, the supporting part and the base part are rotatably arranged, and the telescopic piece 6 is detachably arranged on the supporting part. Specifically, the motor can be arranged on the base part, the output shaft of the motor is vertically arranged upwards and is connected with the supporting part, and the supporting part is driven to rotate through the rotation of the motor. In order to increase the stability of the connection between the telescopic piece 6 and the supporting part, a fastener is arranged on the supporting part, a clamping groove matched with the fastener is arranged at the bottom of the telescopic piece 6, and the telescopic piece 6 is detachably connected through the cooperation of the fastener and the clamping groove.

In the transportation state, as shown in fig. 6, the gantry crane 4 is placed on a temporary gantry bracket formed by the beam carrying trolley 32 and the telescopic piece 6, the beam carrying trolley 32 drives the telescopic assembly to rotate, and then 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 transporting special column, the width of the whole beam transporting special column in the transportation state is reduced, the telescopic piece 6 is contracted, the height of the horizontal plane where the top surface of the gantry crane 4 is located is reduced, and then the conveying Liang Zhuanlie can smoothly pass through the sections such as a tunnel.

As shown in fig. 7, in order to facilitate the temporary gantry support to mount the gantry crane 4 on the guide beam 2, both ends of the two longitudinal beams 22 extend out of the cross beam 21 to form guide beams 23, the temporary gantry support drives the gantry crane 4 to move between the two guide beams 23 arranged on the same side, and the gantry crane 4 is mounted on the guide beams 23 or drives the gantry crane 4 to be separated from the guide beam 2 through the extension and retraction of the extension and retraction piece 6 and the rotation of the supporting part. Specifically, after the temporary gantry support moves between the two guide beams 23, the gantry crane 4 is driven to ascend by extending the telescopic piece 6, so that the height of the bottom surface of the gantry crane 4 is greater than the height of the plane where the top of the guide beams 23 is located. The gantry crane 4 is rotated such that the width direction of the gantry crane 4 coincides with the length direction of the guide beam 2. The telescopic piece 6 is contracted, so that the bottom of the gantry crane 4 is supported on the guide beam 23, and then the gantry crane 4 walks on the longitudinal beam 22 to replace beam pieces.

Further preferably, as shown in fig. 7 and 8, the guide beam 23 is hinged to the longitudinal beam 22, and the guide beam 23 is connected with a first adjusting device 5, and the first adjusting device 5 is used for driving the guide beam 23 to swing along the hinge position of the guide beam and the longitudinal beam 22.

Specifically, the guide beam 23 is swingable in the horizontal direction with respect to the side member 22, and the first adjusting device 5 is hingedly provided between the guide beam 23 and the side member 22, and the guide beam 23 swings in the horizontal direction toward the inside of the side member 22 for facilitating the installation of the first adjusting device 5. The first adjusting device 5 comprises a first driving part which is arranged on the longitudinal beam 22 in a hinged manner and a first telescopic part which is arranged on the guide beam 23 in a hinged manner. Conversely, the first driving part may be hinged to the guide beam 23, and the first telescopic part may be hinged to the longitudinal beam 22. When the guide beam 23 is used, the first telescopic part can be driven by the first driving part to stretch and retract, and the guide beam 23 and the longitudinal beam 22 can swing relatively. By the design mode, the space between the two longitudinal beams 22 is not occupied, and the replacement process of the beam piece is not influenced.

The guide beam 23 can also oscillate in the vertical direction relative to the longitudinal beam 22. Preferably, the guide beam 23 swings upwards along the vertical direction, that is, the hinge position is arranged above the joint of 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 supported by the contact surface of the guide beam 23 and the longitudinal beam 22 and the hinge device, so that the stress condition of the adjusting device is reduced, and the service life of the adjusting device is prolonged.

As shown in fig. 7 and 9, the guide beam 23 can swing relative to the longitudinal beam 22 through the hinge structure between the guide beam 23 and the longitudinal beam 22, and the guide beam 23 is driven to swing through the first adjusting device 5 during transportation, so that the length of the guide beam 2 is shortened or the width of the end part of the guide beam 2 in the transverse direction is reduced, the phenomenon of overrun is avoided when the guide beam passes through a bending section of a small-radius curve, and the normal transportation of the guide beam 2 is ensured.

In order to provide enough operation space for beam replacement, the width of the guide beam 2 is generally larger than that of a railway, so that the width of the guide beam 2 is larger, and the phenomenon of overrun is avoided when the guide beam passes through narrow sections such as tunnels in the transportation process, and the normal transportation of the guide beam 2 is influenced. Therefore, both ends of the two cross beams 21 can be hinged with the longitudinal beam 22, and the longitudinal beam 22 is connected with a second adjusting device 51, and the second adjusting device 51 is used for driving the longitudinal beam 22 to swing along the hinge position of the longitudinal beam and the cross beams 21. In the transportation process of the guide beam 2, the guide beam 2 is contracted, the guide beam transfer trolley 1 drives the guide beam 2 in a contracted state to move, after the guide beam transfer trolley 1 drives the guide beam 2 to move to the position above the frame hole to be replaced, the guide beam 2 is unfolded, the distance between two longitudinal beams 22 of the unfolded guide beam 2 is larger than the width of a beam sheet, and the upper travelling mechanism 12 travels on the unfolded guide beam 2.

In some embodiments, the second adjustment means 51 comprises a telescopic mechanism hingedly arranged between the cross beam 21 and one of the stringers 22. Wherein, telescopic machanism includes second drive division and second telescopic machanism, and second drive division sets up on longeron 22, and second telescopic machanism can dismantle with crossbeam 21 and be connected to, the setting position and the setting angle of second telescopic machanism and second drive division can satisfy flexible demand, promptly when driving the flexible of second telescopic machanism through the second drive division, can relative swing between longeron 22 and the crossbeam 21. When the guide beam 2 is contracted, the end part of the second telescopic part is connected with 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 swing relatively, and further the two longitudinal beams 22 are close to each other, and the contraction of the guide beam 2 is realized. After the guide beam 2 moves to the working position, the second driving part drives the second telescopic part to reversely move, so that the two longitudinal beams 22 are far away, the expansion of the guide beam 2 is completed, and the next procedure is performed, at this time, the second telescopic part can be separated from the cross beam 21, and the second telescopic part is contracted through the second driving part, so that the influence on the hoisting process of the beam piece is avoided.

In some embodiments, as shown in fig. 12, the upper running mechanism 12 is rotatably arranged with the vehicle body 11, the upper running mechanism 12 is connected with the longitudinal beam 22, and the rotation of the upper running mechanism 12 drives the longitudinal beam 22 to rotate relative to the cross beam 21, so as to complete the unfolding and retracting process of the guide beam 2. Specifically, the upper traveling mechanism 12 includes a turntable 121 rotatably disposed on the vehicle body 11 and a boom 122 symmetrically disposed on both sides of the turntable 121, two ends of the boom 122 are provided with traveling wheel assemblies 123 for traveling on the deployed guide beam 2, and a connecting rod 124 for connecting with the longitudinal beam 22 is disposed at the bottom of the boom 122.

When the lifting device is used, the lifting arm 122 is pushed to rotate by external force through the connection rod 124 connected with the longitudinal beam 22, the longitudinal beam 22 is driven to rotate by the connection rod 124, the expansion and retraction of the guide beam 2 are completed, and meanwhile, the lifting and the lowering of the guide beam 2 can be realized through the lifting of the upper travelling mechanism 12. Specifically, the outer periphery of the vehicle body 11 is provided with a movable sleeve in a sliding manner in the vertical direction, and the turntable 121 is rotatably arranged on the outer periphery of the movable sleeve, so that the upper traveling mechanism 12 can move in the vertical direction relative to the bottom of the vehicle body 11 in such a design manner, and meanwhile, the upper traveling mechanism 12 can rotate relative to the vehicle body 11. Specifically, a telescopic member, preferably an electric push rod, a hydraulic cylinder or an air cylinder, may be provided between the movable sleeve and the lower running gear 13.

The traveling wheel assembly 123 includes a traveling wheel bracket disposed at an end of the boom 122, and a traveling wheel for traveling on top of the guide beam 2 is disposed at a bottom of the traveling wheel bracket. The traveling wheel assembly 123 can be pushed by external force to travel on the top of the longitudinal beam 22, or a motor is arranged on the suspension arm 122, an output shaft of the motor is connected with the traveling wheel, and the motor drives the traveling wheel to move, so that the vehicle body 11 is driven to travel.

As shown in fig. 6, the beam transporting special train of the application comprises a traction head 33 and a vehicle body 34, wherein the top of the vehicle body 34 is provided with two tracks for the beam carrying trolley 32 to travel along the length direction. And the top of the vehicle body 34 is also provided with a plurality of temporary supports for temporary support beam plates, each temporary support being disposed between two rails, the temporary supports being retractable in the vertical direction. Under the non-tunnel section, the beam sheet is supported on top of the beam carrying trolley 32; when the beam passes through the tunnel, the temporary support piece on the special beam transporting column rises to support the beam piece, so that the beam piece is separated from the beam carrying trolley 32, and after the beam carrying trolley 32 is avoided, the temporary support piece descends and the beam piece is supported on the special beam transporting column. According to the application, the temporary supporting piece is arranged on the special beam transporting column, so that the position of the beam piece supported in the transportation state is changed, namely, the beam piece is supported on the special beam transporting column when passing through a tunnel section, the plane height of the top of the beam piece is reduced, and the phenomenon that the beam piece cannot pass through a tunnel is avoided.

For convenience of description, the two beam trains are divided into a first beam train 3 and a second beam train 31. The frame replacing method of the whole hole beam comprises the following steps:

Step one, preparing before construction, cutting steel rails and rail panels at two ends of a beam sheet to be replaced, and rotating a contact net upright post of a cross-region of the beam to be replaced by 90 degrees and poking the contact net into a line because certain limits can be occupied after equipment installation is completed.

Step two, as shown in fig. 1, the guide beam transfer vehicle 1 drives the guide beam 2 to move above the hole site of the frame to be replaced, the telescopic piece 6 is placed on the two beam carrying trolleys 32 positioned on the first special beam transporting column 3, the gantry crane 4 is supported at the top of the telescopic piece 6, the first special beam transporting column 3 drives the two gantry cranes 4 to move to one side of the guide beam 2, and the second transporting column Liang Zhuanlie drives the replacement beam piece to move to the other side of the guide beam 2. The first beam column 3 moves to one side of the guide beam 2, and the second beam Liang Zhuanlie moves to the other side of the guide beam 2, which is the final position of the guide beam, and does not refer to the moving sequence of the first beam Liang Zhuanlie, the guide beam transporter 1 and the second beam Liang Zhuanlie. Preferably, the second transporting Liang Zhuanlie, the guide beam transporting truck 1 and the first transporting beam special column 3 are sequentially arranged to synchronously enter the direction towards the construction site, so that the landing efficiency is improved.

Specifically, in the moving process, as shown in fig. 6, the telescopic part 6 walking on the first special beam transporting column 3 is placed on the beam carrying trolley 32 to form a temporary gantry bracket, the gantry crane 4 is supported at the top of the temporary gantry bracket, and the telescopic part 6 is driven to rotate by the beam carrying trolley 32, so that the length direction of the gantry crane 4 is consistent with the length direction of the first special beam transporting column 3, the width distance of the first special beam transporting column Liang Zhuanlie in the transporting process is reduced, and the phenomenon of overrun is avoided. When the transport Liang Zhuanlie runs on a normal road section, the beam plates are supported by the beam carrying trolley 32. And when the tunnel section is passed, the temporary support piece on the second transport Liang Zhuanlie is lifted to support the beam piece, so that the beam piece is separated from the beam carrying trolley 32, the temporary support piece is lowered after the beam carrying trolley 32 is avoided, the beam piece is supported on the special beam transport column, the height of the second transport Liang Zhuanlie is reduced, and the tunnel wall is prevented from being scratched. The guide beam 2 is contracted, and the guide beam transfer trolley 1 drives the guide beam 2 in a contracted state to move, so that the width of the guide beam 2 is reduced, and the phenomenon of overrun is avoided.

Preferably, the gantry crane 4 comprises a bearing part provided with a hoisting system and first supporting legs fixed on two sides of the lower end of the bearing part, wherein second supporting legs are arranged below the first supporting legs, and driving parts are connected to the first supporting legs. The driving piece is used for driving the first supporting leg to do lifting movement on the second supporting leg. In the transportation, the expansion piece 6 contracts, and simultaneously the first supporting leg part moves downwards relative to the second supporting leg part, so that the height of the gantry crane 4 is reduced, the problem of overrun is avoided, and simultaneously, the second supporting leg part is supported at the top of the first special transportation beam column 3, and the stability of the transportation process is improved.

Step three, combining with fig. 2 and 3, the guide beam 2 is lowered, two cross beams 21 of the guide beam 2 are respectively supported on existing bridges at two sides of a frame hole site to be replaced, a space through which beam sheets can pass is formed between two longitudinal beams 22 of the guide beam 2, a gantry crane 4 is placed on the guide beam 2 through a beam carrying trolley 32 and a telescopic piece 6, the telescopic piece 6 is separated from the beam carrying trolley 32, the gantry crane 4 drives the telescopic piece 6 to cross the cross beams 21, and the telescopic piece 6 is placed on the guide beam transfer trolley 1.

Specifically, after the guide beam 2 moves to the upper side of the hole site of the frame to be replaced, the guide beam is unfolded and lowered, the temporary gantry bracket drives the gantry crane 4 to travel between the two guide beams 23, the temporary gantry bracket upwards supports the gantry crane 4, meanwhile, the second supporting leg part of the gantry crane 4 upwards moves relative to the first supporting leg part, the bottom surface of the second supporting leg part is higher than the horizontal surface of the top of the guide beam 23, the temporary gantry bracket drives the gantry crane 4 to rotate to a working position, and the second supporting leg part descends relative to the first supporting leg part, so that the gantry crane 4 supports and is located on the guide beam 23. The beam carrying trolley 32 is separated from the telescopic piece 6 and is connected with the telescopic piece 6 through the gantry crane 4, the gantry crane 4 drives the telescopic piece 6 to move upwards, the horizontal height of the bottom surface of the telescopic piece 6 is larger than that of the top surface of the cross beam 21, the gantry crane 4 moves towards the direction of the second carrying Liang Zhuanlie, the telescopic piece 6 spans the cross beam 21, the telescopic piece 6 is placed on the guide beam transfer trolley 1 through the gantry crane 4, and the gantry crane 4 is separated from the telescopic piece 6.

Step four, as shown in fig. 3, the guide beam transfer vehicle 1 drives the telescopic piece 6 to walk on the longitudinal beam 22 of the guide beam 2, and moves across the cross beam 21 to one end of the guide beam 2 close to the second conveyor Liang Zhuanlie.

Specifically, the upper travelling mechanism 12 of the guide beam transfer trolley 1 is supported on the longitudinal beam 22, and the bottom of the guide beam transfer trolley 1 moves upwards relative to the upper travelling mechanism 12 until the horizontal height of the bottom of the guide beam transfer trolley 1 is greater than the horizontal height of the top surface of the cross beam 21, so that the guide beam transfer trolley spans across the cross beam 21 to realize avoidance. When the guide beam transfer vehicle 1 moves above the guide beam 23 close to the second transport Liang Zhuanlie, the guide beam transfer vehicle 1 can move downwards relative to the upper travelling mechanism 12, so that the guide beam transfer vehicle can travel on the second transport Liang Zhuanlie to avoid, otherwise, the guide beam transfer vehicle 1 can return to the guide beam 2 from the second transport Liang Zhuanlie.

In the transferring process, the guide beam transfer trolley 1 can firstly move to the upper side of the guide beam 23 close to the second transfer Liang Zhuanlie across the cross beam 21, then the telescopic piece 6 is lifted by the gantry crane 4, and the telescopic piece 6 is placed on the guide beam transfer trolley 1.

Step five, as shown in fig. 3, the beam piece to be replaced is removed by two gantry cranes 4, and the two gantry cranes 4 place the removed beam piece on the beam carrying trolley 32 positioned in the first beam carrying special column 3.

Specifically, in the process of removing the beam piece, the beam piece to be replaced is lifted by the two gantry cranes 4 and is driven to move towards the direction of the first beam special line 3, the two beam carrying trolleys 32 on the first beam special line 3 move to the position close to the guide beam 2, the gantry cranes 4 close to the first beam special line 3 lower the end of the beam piece, so that the beam piece is supported on the beam carrying trolleys 32 far away from the guide beam 2, the beam carrying trolleys 32 and the gantry cranes 4 far away from the first beam special line 3 synchronously move until the gantry cranes 4 far away from the first beam special line 3 move to the position close to the end of the guide beam 2, the beam piece is lowered, the other end of the beam piece is supported on the beam carrying trolleys 32 close to the guide beam 2, and after the two beam carrying trolleys 32 drive the beam piece to move to the designated position on the first beam special line 3, the beam piece is driven by the first beam special line 3 to move to the beam piece placement area.

Step six, as shown in fig. 4, the guide beam transfer trolley 1 passes through the gantry crane 4 and moves to one end of the guide beam 2, which is close to the first special beam transporting column 3, the beam carrying trolley 32 is matched with the two gantry cranes 4 to lift the beam sheet for replacement on the second transport Liang Zhuanlie, and the two gantry cranes 4 are used for erecting the lifted beam sheet at the position to be replaced.

Specifically, the guide beam 2 traveling vehicle and the track on which the gantry crane 4 travels diverge from each other, so that the guide beam traveling vehicle 1 can pass through the gantry crane 4. Before installing a new beam, the guide beam transfer trolley 1 moves upwards relative to the upper travelling mechanism 12, so that the horizontal height of the bottom of the guide beam transfer trolley 1 is greater than that of the top surface of the cross beam 21, and further spans the cross beam 21, and the guide beam transfer trolley 1 moves to one end of the guide beam 2, which is close to the first special beam transporting column 3.

When a new beam is installed, the beam sheet for replacement is placed on the two beam carrying trolleys 32 on the second transportation special column, the two beam carrying trolleys 32 are supported at the two ends of the beam sheet, the two gantry cranes 4 move to one end of the guide beam 2 close to the second transportation Liang Zhuanlie, the beam sheet is lifted at one end of the guide beam 2 through the gantry cranes 4 far away from the second transportation Liang Zhuanlie 31, and the beam sheet is synchronously moved towards the direction of the first beam carrying special column 3 with the beam carrying trolleys 32 far away from the guide beam 2 until the beam carrying trolleys 32 move to the position close to the end of the guide beam 2, the gantry cranes 4 close to the second transportation Liang Zhuanlie lift the beam sheet, the two gantry cranes 4 move on the guide beam 2, and the lifted beam sheet is erected at a hole site to be replaced.

When the beam sheet is continuously dismantled, the guide beam transfer trolley 1 drives the guide beam 2 and the gantry crane 4 positioned at the top of the guide beam 2 to move to the position above the next frame hole to be replaced, the first beam transporting special column 3 transports the dismantled beam sheet to the appointed position and returns the beam sheet to one side of the guide beam 2, and the second beam transporting Liang Zhuanlie transports the beam sheet for replacement to return to the other side of the guide beam 2. And continuously completing the beam sheet replacement work according to the steps three to six.

After the dismantling work is completed, as shown in fig. 5, the first special beam transporting column 3 drives the dismantled beam piece to move to a designated position, the two gantry cranes 4 drive the telescopic piece 6 on the guide beam transfer trolley 1 to move to one end of the guide beam 2 close to the second conveyor Liang Zhuanlie, the telescopic piece 6 is placed on the beam carrying trolley 32 on the second conveyor Liang Zhuanlie 31 through the gantry cranes 4 to form a temporary gantry bracket, the gantry cranes 4 are driven to be separated from the guide beam 2 through the temporary gantry bracket, and the second conveyor Liang Zhuanlie drives the gantry cranes 4 to move to the designated position.

Specifically, after the telescopic member 6 and the beam carrying trolley 32 form a temporary gantry, the temporary gantry is located below the gantry crane 4. At this time, the temporary gantry frame rises, and simultaneously the first supporting leg portion of the gantry crane 4 descends relative to the second supporting leg portion, so that the gantry crane 4 is supported at the top of the temporary gantry frame, the second supporting leg portion ascends relative to the first supporting leg portion, the gantry crane 4 is separated from the guide beam 2, the temporary gantry frame drives the gantry crane 4 to rotate to a transportation position, and then the temporary gantry frame descends, and simultaneously, in order to increase stability in the transportation process, the second supporting leg portion of the gantry crane 4 descends relative to the first supporting leg portion, so that the second supporting leg portion is supported at the top of the second transportation Liang Zhuanlie.

And after the construction is finished, welding the cut steel rail, filling the railway ballast, tamping the railway ballast by using a tamping car, recovering the contact net, and finishing the bridge replacement work.

In the beam replacement process, after the old beam is disassembled, the first beam transporting special column 3 can transport the old beam to the beam sheet placing area, and then returns to one side of the guide beam 2 to wait for the next transportation. Similarly, when the gantry crane 4 lifts the replacement beam piece on the second transport Liang Zhuanlie, the second transport Liang Zhuanlie can move to the new beam stacking area to take a new beam, and return to the other side of the guide beam 2. During this time, the gantry crane 4 completes the assembly of the beam and the replacement of the next beam is performed. The whole operation process can be synchronously completed, the working efficiency is increased, the skylight point time operation is effectively utilized, the application range is wide, the beam replacement construction under various terrain environment conditions can be realized, and the method has great advantages for the beam replacement construction under high piers, deep valleys and under-bridge water environments; the requirements on the preparation conditions in the early stage of the construction site are less, and the influence on the existing line is small; the new beam has completed all the assembly procedures in the beam field, has little pollution to the construction site in the beam replacement process, and accords with the green and environment-friendly construction concept. And the design mode adopts less equipment, so that the equipment cost is effectively reduced.

Finally, it should be noted that: the above embodiments are only for illustrating the technical solution of the present invention, and are not limiting; although the invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A full aperture beam frame changing apparatus, comprising:

The telescopic piece is arranged at the first installation position and assembled with the beam carrying trolley to form a temporary gantry bracket, the temporary gantry bracket is used for placing the gantry crane on the longitudinal beam or driving the gantry crane to be separated from the guide beam, and the gantry crane drives the telescopic piece to be converted into the first installation position and the second installation position;

the beam carrying trolley comprises a foundation part for walking at the top of the beam transporting special column and a supporting part for placing the telescopic piece, the top of the supporting part is provided with the first installation position, the supporting part and the foundation part are rotatably arranged, and the telescopic piece is detachably arranged on the supporting part;

Both ends of the two cross beams are hinged with the longitudinal beams, and the longitudinal beams are connected with a second adjusting device which is used for driving the longitudinal beams to swing along the hinged positions of the longitudinal beams and the cross beams;

The upper traveling mechanism is rotatably arranged with the vehicle body, the upper traveling mechanism comprises a rotary table arranged on the vehicle body in a rotating manner and suspension arms symmetrically arranged on two sides of the rotary table, traveling wheel assemblies used for traveling on the guide beams after being unfolded are arranged at two ends of the suspension arms, and connecting rods used for being connected with the longitudinal beams are arranged at the bottoms of the suspension arms.

2. The whole-hole beam frame changing device according to claim 1, wherein two ends of two longitudinal beams extend out of the cross beam to form guide beams, the temporary 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 expansion and contraction of the expansion and contraction piece and the rotation of the supporting part.

3. The whole-hole beam frame replacing device according to claim 2, 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.

4. The whole-hole beam frame changing device according to claim 1, wherein a lower travelling mechanism for travelling on an existing bridge and a lifting mechanism for supporting the guide beam are arranged on the vehicle body, and the second installation position is arranged on the top of the lower travelling mechanism.

5. The whole-hole beam frame changing device according to claim 1, wherein the beam transporting special column comprises a traction head and a vehicle body, and two tracks for the beam carrying trolley to travel are arranged on the top of the vehicle body along the length direction of the vehicle body.

6. The full aperture beam changing apparatus according to claim 5, wherein the top of the vehicle body is further provided with a plurality of support members for temporary support beams, each of the support members being disposed between two of the rails, the support members being vertically retractable.

7. A method for changing a frame of a whole hole beam, which adopts the whole hole beam frame changing device as set forth in any one of claims 1 to 6, and is characterized by comprising the steps of: