CN114941263B

CN114941263B - Switch replacing operation method

Info

Publication number: CN114941263B
Application number: CN202210532083.3A
Authority: CN
Inventors: 李石平; 晏红文; 陈亮陪; 卢云波; 朱利君; 吴青考; 罗前星
Original assignee: Zhuzhou CSR Times Electric Co Ltd
Current assignee: Zhuzhou CRRC Times Electric Co Ltd
Priority date: 2022-05-07
Filing date: 2022-05-07
Publication date: 2024-02-13
Anticipated expiration: 2042-05-07
Also published as: CN114941263A

Abstract

The invention discloses a turnout replacement operation method, wherein a plurality of gantry cranes are longitudinally fixed on a first transport flat car through rotary mounting seats, new turnouts and lifting tools are placed on a second transport flat car, and are transported to an operation site through traction of a rail car. The first transportation flatcar moves to the placement position of the first gantry crane, and the rotary mounting seat rotates by 90 degrees. The gantry cranes are unloaded and arranged to the appointed position, and the first transportation flatcar sequentially moves until all the gantry cranes are deployed to the appointed position. The second transportation flatcar moves to a designated position, a lifting tool is connected with the gantry crane and the new turnout in a hanging mode, and the new turnout is lifted. The rail car pulls the first transportation flatcar, the second transportation flatcar drives away from the change operation district, carries out the crowd through a plurality of gantry crane and hangs new switch lateral shifting to the one side of leaning on the landing leg and place, and the rethread gantry crowd hangs and accomplishes the switch and changes the operation. The invention can solve the technical problems that the existing turnout replacement method has low operation safety and can not lift large-size turnout components.

Description

Switch replacing operation method

Technical Field

The invention relates to the technical field of railway engineering machinery, in particular to a turnout replacement operation method for a high-speed railway ballastless track.

Background

The high-speed railway ballastless track turnout is an important part of a passenger special line, is an object for the important maintenance of the line, is one of vulnerable parts, and needs frequent maintenance and repair or periodic replacement. The turnout mainly comprises a switch rail, a curve transition section, a switch point and a guard rail. The turnout point, the switch rail and the like are main components of the turnout, and are mainly characterized by longer size, heavier weight and difficult manual replacement. The turnout of the passenger special line in China is mainly of the type of No. 18 turnout and the type of No. 42 turnout, and the length of the No. 42 turnout is approximately twice that of the No. 18 turnout. At present, the turnout replacement equipment applied in China mainly adopts the following two modes:

the first mode is to use a flatcar as a transport means, hoist the flatcar from an adjacent line by adopting a 25T hoisting rail car, and replace the flatcar in a manual rail pulling and pulling mode. This approach has many drawbacks: if the crane boom is easy to scrape and touch the contact net, is easy to cause hidden damage to a new rail piece, occupies adjacent line space, has low construction efficiency and long skylight occupation time, and is difficult to lift large-size turnout parts.

The second mode is to adopt a special change device for the turnout parts, namely, two flat cars are refitted and respectively provided with a movable cantilever crane. However, the two cantilever cranes are used for respectively and independently lifting the new and old turnout components, and the main defects of the way are as follows: the cost is high, the security is low, can't hoist large-scale switch part.

In the prior art, the following technical schemes are mainly related to the invention:

in the prior art 1, a baby chicken middle-car generation engineering machinery company is applied for the year 2018, the month 02 and the year 01, and is published in the year 2019, the year 03 and the month 01, and the Chinese invention application with the publication number of CN109403161A is applied for the construction process of replacing turnout of a large-tonnage crane rail car. The invention discloses a construction process for replacing turnouts of a large-tonnage hoisting rail car, which comprises the following specific steps: 1. before a new turnout is installed on a ballast bed, a pre-paving method is adopted to carry out sectional integral assembly on the new turnout; 2. before a new turnout is installed, a crane rail car is used as main turnout dismantling equipment to dismantle old turnouts and clean ballast beds; 3. after the new turnout is assembled, a crane rail car is used as main turnout transferring equipment to transfer the new turnout to the vicinity of the position to be installed; 4. after the new turnout is transported to the vicinity of the installation position, the hoisting rail car is used as main installation equipment of the turnout and is accurately installed at the corresponding position of the ballast bed. The method aims at the integral replacement of the group of turnouts, and because the weight and the size of the group of turnouts are large, the operation of the crane rail car is at great safety risk, the overhead contact system is easy to touch, in the hoisting process, the turnouts are unstable, and the rail car has the possibility of overturning. Meanwhile, the method requires more personnel, has high labor intensity and low efficiency.

In the prior art 2, a company of China's iron construction high and new equipment stock is applied for the company of China on the date of 2016, 08 and 15, and announced on the date of 2017, 06 and 06, and the publication number is CN206219916U, which is a quick replacement device for large parts of railway turnout. The utility model discloses a quick replacement device for large railway turnout components, which comprises at least one group of bearing platforms, wherein a running mechanism is arranged below the bearing platforms, a bearing frame is arranged above the bearing platforms, the bearing frame is connected with a telescopic girder, the telescopic girder is connected with a sliding hoisting mechanism, the telescopic girder is also provided with a driving mechanism, one end of the telescopic girder is connected with a frame hinge girder and can rotate or transversely move based on the frame hinge girder, the bearing platforms are also connected with at least one set of stable supporting device, and the front end of the telescopic girder is connected with at least one set of front end supporting device. However, the device is bulky and complex in structure and high in cost, and only small-sized switch parts with small sizes can be replaced, and for large-sized switch parts with lengths of tens of meters, replacement cannot be achieved due to size limitation.

In the prior art 3, a middle iron heavy industry limited company and a middle iron department worker group limited company apply for the middle iron department worker group limited company in 2013 in month 05 and disclose the middle iron department worker group limited company in 2013 in month 05 and 01, and the Chinese utility model application publication number is CN103074829A is a railway switch changing and laying construction method and a railway switch rail laying set thereof. The utility model discloses a railway track laying unit, which comprises a main machine, an auxiliary machine and a hydraulic replacement rack, wherein the main machine comprises a main machine flatcar, a machine arm, a front upright post gantry structure, a rear upright post gantry structure, a lifting trolley, a hoisting mechanism and a running mechanism, and the auxiliary machine at least comprises an auxiliary machine flatcar; the hydraulic reloading frame comprises a first reloading frame, a second reloading frame and a reloading lifting appliance. However, the unit is large and complex in structure and high in cost; the whole set of equipment is difficult to transport, more equipment is needed, and construction management is difficult; only small-size turnout components with small size can be replaced, and long large-size turnout components cannot be replaced due to size limitation.

Disclosure of Invention

In view of the above, the present invention aims to provide a switch replacement method, which solves the technical problems that the existing switch replacement method has low operation safety and cannot lift large-size switch components.

In order to achieve the above object, the present invention specifically provides a technical implementation scheme of a switch replacement operation method, which includes the following steps:

s101) longitudinally fixing a plurality of gantry cranes on a first transportation flatcar through a rotary mounting seat, placing new turnouts and lifting tools on a second transportation flatcar, and carrying out traction transportation to a designated position of an operation site through a rail car;

s102) the rail car pulls the first transportation flatcar to move to the placement position of the first gantry crane, and the rotary mounting seat rotates by 90 degrees until the gantry crane is vertical to the line direction;

s103) the supporting leg of the gantry crane moves to a designated position along the cross beam, and the rotary mounting seat drives the gantry crane to descend; the landing leg stretches downwards to be close to the ground, the rotary mounting seat locks and releases the gantry crane, and the landing leg continues to stretch and level to complete the deployment of one gantry crane;

s104) the rail car pulls the first transportation flatcar to sequentially move, and the step S103) is repeatedly executed until all gantry cranes are deployed to the designated positions;

S105) the rail car pulls the second transportation flatcar to move to a designated position, the lifting tool is connected with the gantry crane and the new turnout in a hanging way, and the new turnout is lifted;

s106) the rail car pulls the first transport flat car and the second transport flat car to leave the replacement operation area, and the new turnout is transversely moved to one side close to the supporting leg to be placed through group hanging by a plurality of gantry cranes.

Further, after the step S106), the following procedure is included:

s107) cutting steel rails, removing fasteners and removing old turnouts;

s108) moving the lifting tool to an old turnout through the gantry crane, hanging and lifting, and placing the old turnout on a supporting leg close to the other side of the gantry crane;

s109) moving a lifting tool to a new turnout through the gantry crane, hanging and lifting, and placing the new turnout at the position of an old turnout; and welding the new turnout with the steel rail, installing fasteners and finishing the recovery of the line.

Further, after said step S109), the following procedure is also included:

s110) moving the lifting tool to the old turnout through the gantry crane and hanging and lifting the old turnout;

s111) the rail car pulls in a second transportation flatcar;

s112) moving the old turnout through the lifting tool and placing the old turnout at the appointed position of the second transportation flatcar.

Further, after the step S112), the following procedure is further included:

s113) the rail car pulls the first transportation flatcar to move to the position below the gantry crane at the final position, and the cross beam of the gantry crane is aligned with the groove position of the rotary mounting seat;

s114) the landing leg of the gantry crane is contracted into the groove of the rotary mounting seat for the cross beam to enter and be fixed;

s115) the landing leg of the gantry crane continues to retract to a starting position, and the landing leg moves to the starting position along the cross beam;

s116) repeatedly executing the steps S113) to S115) to finish the recovery process of the rest gantry cranes;

s117) the rotary mounting seat rotates until the gantry crane is longitudinally fixed, and the rail car pulls the first transport flat car and the second transport flat car to drive away.

Further, the handling frock includes carrier bar, mounting bracket, rings and lifting claw. The lifting mechanism comprises a lifting hook capable of lifting vertically, the lifting ring is arranged on the upper part of the bearing beam, and the lifting hook is connected with the lifting ring. The mounting frame is arranged at the lower part of the bearing beam, and the lifting claws are arranged at the left side and the right side of the mounting frame along the line direction. When the gantry crane carries out lifting operation, the turnout is lifted by the lifting claw. When the turnout is lifted, the turnout is lifted to a designated longitudinal position by moving the mounting frame back and forth on the bearing beam along the line direction.

Further, the mounting frame is movably connected with the bearing beam, chain wheels are arranged at two ends of the bearing beam along the line direction, and the two chain wheels are connected through a chain. The chain is connected with the mounting frame, one of the chain wheels is driven to rotate through the longitudinal movement mechanism, and the chain wheel is driven to move along the line direction by the rotation of the chain wheel, so that the longitudinal movement of the mounting frame is realized.

Further, the gantry crane further comprises a sliding frame and a lifting mechanism, wherein the sliding frame is movably arranged at the left end and the right end of the cross beam, and the sliding frame can transversely move along the cross beam. And a lifting mechanism is arranged on the cross beam between the two sliding frames, and can transversely move along the cross beam. Legs which can stretch along the vertical direction are respectively arranged below the two sliding frames. And a sliding driving mechanism is arranged between the cross beam and the sliding frame.

Further, a transverse support with internal threads is arranged on the sliding frame, and a mounting seat is arranged on the cross beam. The sliding driving mechanism adopts a power driving screw mechanism, the power driving end of the sliding driving mechanism is fixed on the mounting seat, the screw end is connected to the transverse moving support, and the sliding frame is driven to realize transverse moving by the rotation of the power driving screw.

Further, a wedge-shaped locking mechanism is arranged in the sliding frame, and the wedge-shaped locking mechanism is positioned between the cross beam and the sliding frame and comprises two wedge-shaped sliding blocks which are in contact with each other. After penetrating through the sliding frame, the locking mechanism compresses the two wedge-shaped sliding blocks so as to lock the sliding frame. And after the transverse spans of the two supporting legs are adjusted in place, the wedge-shaped locking mechanism is used for locking the position of the sliding frame.

Further, the landing leg comprises a threaded cylinder, a screw, a support and a landing leg sleeve. The lower part of the sliding frame is connected with a threaded cylinder, a supporting leg sleeve is sleeved below the threaded cylinder, and a support is arranged below the supporting leg sleeve. The support is internally provided with a lifting driving mechanism, the support leg sleeve is internally provided with a screw rod, the upper end of the screw rod is connected with the threaded cylinder through threads, and the lower end of the screw rod is connected with the lifting driving mechanism. The lifting driving mechanism drives the screw rod to rotate so that the threaded cylinder moves up and down, and the telescopic function of the supporting leg is realized.

Further, a bearing is provided between the screw and the support.

Further, the lower parts of the supporting legs are provided with adjustable supporting legs, and the supporting legs and the gantry crane can be leveled through the adjustable supporting legs in the deployment process of the gantry crane.

By implementing the technical scheme of the turnout replacement operation method provided by the invention, the turnout replacement operation method has the following beneficial effects:

(1) According to the turnout replacement operation method, the gantry crane supporting legs are arranged on the two sides of a railway line in a crossing mode, adjacent line operation is not needed, safety risks of operation overstepping are avoided, meanwhile, the device is simple in structure, high in reliability, convenient to maintain and overhaul, high in operation efficiency and capable of achieving large-size turnout component lifting;

(2) The turnout replacement operation method is suitable for replacing the whole group of turnouts and replacing single switch rails, switch points and the like, can realize the carrying, placement, position adjustment and replacement of various circuit components with different lengths through the combination of a plurality of gantry cranes, and particularly can realize the lifting of large-size turnout components;

(3) According to the turnout replacement operation method, the gantry crane has the functions of supporting leg transverse movement, lifting and leveling, the lateral span distance and the ground distance of the supporting legs are adjustable, the requirements of different road ground working conditions can be met, the height of the gantry crane device is adjustable, and the risk of touching the contact net in the lifting process is avoided;

(4) The turnout replacement operation method has the advantages of low manufacturing cost, less operators, quick replacement and high efficiency, the turnout is longitudinally installed on the flat car without exceeding the limit of the car when the gantry crane is transported, and the hanging point of the lifting tool can realize longitudinal movement so that the turnout is positioned more accurately.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below. It is evident that the drawings in the following description are only some embodiments of the invention, from which other embodiments can be obtained for a person skilled in the art without inventive effort.

FIG. 1 is a schematic perspective view of a gantry crane in one embodiment of a switch changing apparatus on which the method of the present invention is based;

FIG. 2 is a schematic diagram of the front structure of a gantry crane in one embodiment of a switch changing apparatus on which the method of the present invention is based;

FIG. 3 is a schematic side view of a gantry crane in one embodiment of a switch changing apparatus on which the method of the present invention is based;

FIG. 4 is a side perspective view of a gantry crane in one embodiment of a switch changing apparatus upon which the method of the present invention is based;

FIG. 5 is a schematic top view of the gantry crane in one embodiment of a switch changing apparatus on which the method of the present invention is based;

FIG. 6 is a schematic diagram of a handling tool in one embodiment of a switch changing apparatus on which the method of the present invention is based;

FIG. 7 is a schematic side view of a handling tool in one embodiment of a switch changing apparatus on which the method of the present invention is based;

FIG. 8 is a schematic perspective view of a handling fixture in another embodiment of a switch changing apparatus according to the method of the present invention;

FIG. 9 is a schematic view of the mounting structure of a gantry crane in one embodiment of a switch replacement system on which the method of the present invention is based;

FIG. 10 is a schematic illustration of the structure of a swivel mount in one embodiment of a switch replacement system upon which the method of the present invention is based;

FIG. 11 is a schematic perspective view of a swivel mount in one embodiment of a switch replacement system upon which the method of the present invention is based;

FIG. 12 is a schematic bottom view of a swivel mount in one embodiment of a switch replacement system upon which the method of the present invention is based;

FIG. 13 is a schematic side view of a swivel mount in one embodiment of a switch replacement system upon which the method of the present invention is based;

FIG. 14 is a schematic side view of a swivel mount in another view of an embodiment of a switch replacement system upon which the method of the present invention is based;

FIG. 15 is a schematic diagram of a switch changing system according to an embodiment of the present invention in a side view;

FIG. 16 is a schematic diagram of a switch changing system according to an embodiment of the present invention in a top view;

FIG. 17 is a schematic diagram of a gantry crane transport step in a side view of an embodiment of the switch change operation method of the present invention;

FIG. 18 is a schematic diagram of a gantry crane transport step in a top view of one embodiment of the switch change operation method of the present invention;

FIG. 19 is a schematic view of a gantry crane rotated to a lateral position in a side view in accordance with an embodiment of the switch change operation method of the present invention;

FIG. 20 is a schematic view of a gantry crane in a top view in a step of turning to a lateral direction in one embodiment of a switch change operation method of the present invention;

FIG. 21 is a schematic diagram of a gantry crane telescoping off step in a side view of an exemplary embodiment of a switch change method of the present invention;

FIG. 22 is a schematic diagram of a gantry crane telescoping off step in a top view of an embodiment of the switch change method of the present invention;

FIG. 23 is a schematic illustration of a new switch lifting step in a side view of one embodiment of the switch change method of the present invention;

FIG. 24 is a schematic view of a new switch lifting step in a top view of an embodiment of the switch change method of the present invention;

FIG. 25 is a schematic illustration of a new switch placement step in a side view of one embodiment of the switch replacement method of the present invention;

FIG. 26 is a schematic diagram of a new switch placement step in a top view of one embodiment of the switch replacement method of the present invention;

FIG. 27 is a schematic diagram of the old switch removal step in a top view of an embodiment of the switch change method of the present invention;

FIG. 28 is a schematic diagram of the old fork lift placement step in a top view of one embodiment of the switch replacement method of the present invention;

FIG. 29 is a schematic view of a new switch installation step in a top view of one embodiment of the switch replacement method of the present invention;

FIG. 30 is a schematic diagram of a step of lifting an old switch in a side view according to an embodiment of the switch replacement method of the present invention;

FIG. 31 is a schematic view of the old fork lifting step in a top view of an embodiment of the switch replacement method of the present invention;

FIG. 32 is a schematic diagram of a step of placing old turnouts on a flat car in a top view in an embodiment of a switch replacement method according to the present invention;

FIG. 33 is a schematic diagram of a side view of a flatcar running to a gantry crane recovery position step in an embodiment of a switch change operation method of the present invention;

FIG. 34 is a schematic view of a flatcar running to gantry crane recovery position step in a top view of an embodiment of the switch change method of the present invention;

FIG. 35 is a schematic diagram of a step of recycling a gantry crane to a flatcar in a side view in an embodiment of the switch replacement method of the present invention;

FIG. 36 is a schematic view of a gantry crane recycling to flatcar step in a top view of an embodiment of the switch change method of the present invention;

FIG. 37 is a schematic view of a gantry crane rotating to longitudinal fixation step in a side view of an embodiment of a switch change operation method of the present invention;

FIG. 38 is a schematic view of a gantry crane rotating to longitudinal fixation step in a top view of an embodiment of a switch change operation method of the present invention;

in the figure: 1-cross beam, 2-sliding frame, 3-sliding driving mechanism, 4-lifting mechanism, 5-supporting leg, 6-threaded cylinder, 7-lifting driving mechanism, 8-adjustable supporting leg, 9-screw rod, 10-supporting seat, 11-supporting leg sleeve, 12-power cabinet, 13-bearing, 14-first distance sensor, 15-second distance sensor, 16-force sensor, 17-inclination sensor, 18-wedge locking mechanism, 19-lifting seat, 20-slewing bearing, 21-fixed mounting seat, 22-locking seat, 23-guide pillar seat, 24-lifting mechanism, 25-guide pillar, 26-locking mechanism, 27-sliding mechanism, 28-groove, 29-stop part, 30-guiding protuberance, 31-guiding groove, 32-rotary driving mechanism, 33-lifting tool, 34-turnout, 35-track plate, 36-load beam, 37-mounting frame, 38-lifting ring, 39-lifting claw, 40-track car, 41-first transportation flat car, 42-second transportation flat car, 43-power device, 44-new turnout, 45-rail, 46-base, 47-roadbed, 48-longitudinal moving mechanism, 49-fixing seat, 50-sprocket, 51-chain, 52-locking mechanism, 53-mount, 54-transverse moving support, 55-lifting hook, 56-old turnout, 57-base plate, 100-gantry crane, 200-rotary mount.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present invention more clear, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. It will be apparent that the described embodiments are only some, but not all, embodiments of the invention. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.

Referring now to fig. 1 to 38, a specific embodiment of the switch replacement method according to the present invention is shown, and the present invention will be further described with reference to the accompanying drawings and specific embodiments.

Example 1

In order to solve the technical problems of the existing hoisting equipment for the track line, embodiment 1 provides a turnout replacement device based on the hoisting of the gantry crane 100, which has the advantages of simple structure, low cost and convenient and quick operation. The switch replacing device can utilize the skylight time, and adopts a transportation flat car to transport the gantry crane 100, the lifting tool 33, objects needing to be operated and the like to an operation site for lifting operation.

As shown in fig. 1 to 9, an embodiment of a switch replacing device according to the method of the present invention specifically includes a gantry crane 100, where the gantry crane 100 further includes:

A cross beam 1;

the sliding frames 2 are respectively and movably arranged at the left end and the right end of the cross beam 1, and the sliding frames 2 can move transversely along the cross beam 1 (in the direction shown as W in figure 1) so as to adjust the transverse span of the gantry crane 100;

the lifting mechanism 4 is arranged on the cross beam 1 and between the two sliding frames 2 and can transversely move along the cross beam 1 so as to adjust the lifting position of the turnout 34;

the supporting legs 5 are respectively arranged below the two sliding frames 2 and can stretch and retract along the vertical direction (the direction shown as H in the figure 1) so as to adjust the height of the cross beam 1 from the roadbed 47.

As shown in fig. 9, when the gantry crane 100 is deployed from the first transportation flatcar 41 to the railway line, the gantry crane 100 is supported on the roadbed 47 at both sides of the railway line through the support legs 5, the foundation 47 is provided with the base 46, the base 46 is provided with the track plate 35, and the rail 45 is provided on the track plate 35. The total height H of the gantry crane 100 is equal to or greater than the height H1 of the bottom plate 57 of the first transport flat carriage 41 from the rail surface of the rail 45 and the height H2 of the rail surface of the rail 45 from the roadbed 47 and the clearance H3 of the lifting mechanism 4. The clearance H3 of the hoisting mechanism 4 is the distance from the beam 1 when the hook 55 of the gantry crane 100 is at the highest position.

As shown in fig. 2, the lower part of the supporting leg 5 is further provided with an adjustable support leg 8, and the leveling function of the supporting leg 5 and the gantry crane 100 can be realized through the adjustable support leg 8. The beam 1 is provided with an inclination sensor 17, inclination state data of the gantry crane 100 are acquired through the inclination sensor 17, and leveling of the beam 1 is achieved through fine adjustment of the adjustable support legs 8.

The lifting mechanism 4 is further provided with a first distance sensor 14, and the first distance sensor 14 is used for acquiring the distance between the lifting mechanism 4 and the supporting leg 5, so as to realize the alignment of the transverse positions when the plurality of gantry cranes 100 lift the turnout 34. When the gantry cranes 100 perform lifting operation, the first distance sensor 14 obtains the distance between the lifting mechanism 4 and the supporting legs 5, and the distance difference between the supporting legs 5 and the lifting mechanism 4 on the same side of each gantry crane 100 is controlled to meet the set requirement, so that the transverse position alignment when the plurality of gantry cranes 100 synchronously lift the turnout 34 is realized.

The two sliding frames 2 or the supporting legs 5 of the gantry cranes 100 are further provided with second distance sensors 15, and the second distance sensors 15 are used for acquiring the distances between the two adjacent gantry cranes 100 so as to meet the requirement of parallelism between the cross beams 1 of the two gantry cranes 100. After the first gantry crane 100 is deployed in place, the gantry crane 100 deployed later acquires the distance between the two gantry cranes 100 arranged adjacently through the second distance sensor 15 arranged on the two sliding frames 2 or the supporting legs 5, and the parallelism requirement between the cross beams 1 of the two gantry cranes 100 is met by adjusting the rotation angle of the rotation mounting seat 200.

The hoisting mechanism 4 is further provided with a force sensor 16 to realize stability control when the plurality of gantry cranes 100 hoist the turnout 34. When the gantry crane 100 starts to hoist the new switch 44 or the old switch 56, the hoist mechanism 4 of each gantry crane 100 takes the acquired value of the force sensor 16 at this time as a reference value. If the variation value in the subsequent lifting process exceeds the standard value, the collected value of the force sensor 16 of the lifting mechanism 4 in the lifting process is maintained to be basically equivalent to the standard value by adjusting the rotating speed of the motor of the lifting mechanism 4, so that the vertical stability control when the plurality of gantry cranes 100 synchronously lift the turnout 34 is realized.

The gantry crane 100 further comprises a sliding driving mechanism 3, the sliding frame 2 is sleeved on the cross beam 1, one end of the sliding driving mechanism 3 is arranged on the cross beam 1, and the other end of the sliding driving mechanism is connected with the sliding frame 2. The sliding frame 2 is provided with a transverse support 54 with internal threads, and the cross beam 1 is provided with a mounting seat 53. The sliding driving mechanism 3 adopts a power driving screw mechanism, the power driving end of the sliding driving mechanism 3 is fixed on the mounting seat 53, the screw end is connected to the transverse moving support 54, and the sliding frame 2 is driven to realize transverse moving by the rotation of the power driving screw.

As shown in fig. 3 and fig. 4, a wedge-shaped locking mechanism 18 is further arranged in the sliding frame 2, and the wedge-shaped locking mechanism 18 is positioned between the cross beam 1 and the sliding frame 2 and comprises two wedge-shaped sliding blocks which are in contact with each other. After passing through the sliding frame 2, the locking mechanism 52 compresses the two wedge-shaped sliding blocks to lock the position of the sliding frame 2. After the transverse spans of the two support legs 5 are adjusted in place, the position locking of the sliding frame 2 is achieved through the wedge-shaped locking mechanism 18.

The leg 5 further comprises a screw barrel 6, a screw 9, a support 10 and a leg sleeve 11. The screw thread section of thick bamboo 6 is connected in the below of sliding frame 2, and the lower part of screw thread section of thick bamboo 6 is located to landing leg sleeve 11 cover, and support 10 sets up in the below of landing leg sleeve 11. The screw rod 9 is arranged in the supporting leg sleeve 11, the upper end of the screw rod 9 is connected with the threaded cylinder 6 through threads, and the lower end of the screw rod 9 is connected with the lifting driving mechanism 7. The lifting driving mechanism 7 is arranged in the support 10, and the screw 9 is driven to rotate through the lifting driving mechanism 7 to enable the threaded cylinder 6 to move up and down, so that the telescopic function of the supporting leg 5 is realized.

As shown in fig. 7 and 8, the switch replacing device further includes a lifting tool 33, where the lifting tool 33 further includes a load beam 36, a mounting frame 37, a lifting ring 38, and a lifting claw 39. The lifting mechanism 4 comprises a lifting hook 55 capable of lifting vertically, a lifting ring 38 is arranged on the upper part of the bearing beam 36, and the lifting hook 55 is connected with the lifting ring 38. The mounting frame 37 is provided at a lower portion of the load beam 36, and the hanging claws 39 are provided at left and right sides of the mounting frame 37 in a line direction (a direction L shown in fig. 7 and 8). The hanging ring 38 at the upper end of the hanging tool 33 can be connected with the hanging hooks 55 of the gantry cranes 100 through hanging straps or hooks, and the lower end of the hanging tool is connected with the turnout 34 through a plurality of hanging points, as shown in fig. 6. The mounting frame 37 has a longitudinally movable function, and can move back and forth relative to the carrier beam 36 along the line direction after the turnout 34 is lifted, so as to solve the problem of accurately positioning the turnout 34.

When the gantry crane 100 performs a lifting operation, the switch 34 is lifted by the lifting claw 39. When the switch 34 is lifted, it is moved back and forth in the line direction on the carrier beam 36 by the mounting frame 37, thereby lifting the switch 34 to a designated longitudinal position. The mounting frame 37 is movably connected with the carrier beam 36, the carrier beam 36 is provided with sprockets 50 at both ends in the line direction, and the two sprockets 50 are connected by a chain 51. The chain 51 is connected with the mounting frame 37, one of the chain wheels 50 is driven to rotate by the longitudinal moving mechanism 48, and the chain wheel 50 rotates to drive the chain 51 to move back and forth along the line direction, so that the longitudinal movement (the direction L shown in the figures 7 and 8) of the mounting frame 37 is realized, and the problem of accurate positioning of the turnout 34 is solved.

The turnout replacement device described in embodiment 1 has the legs 5 which are vertically retractable and which can slide on the cross beam 1 to adjust the span and height of the gantry crane 100 to accommodate different field conditions and the replacement of turnouts 34 of different sizes. The supporting leg 5 adopts a rotatable and leveling mechanism and is realized by adopting an oil cylinder or an electric screw rod and the like. The hoisting mechanism 4 may be a hoist or other lifting appliance.

Example 2

In order to solve the problems of the existing railway line, particularly the replacement of the turnout parts of the high-speed railway ballastless track, embodiment 2 provides a turnout replacement system for hoisting a turnout by using a multi-gantry crane, which is based on embodiment 1 and has the advantages of simple structure, low cost and convenient and quick operation. The switch replacing system utilizes skylight time, adopts a transport flat car to transport the gantry crane 100, the lifting tool 33 and the new switch 44 to an operation site, and lifts and replaces the new switch after being placed at a proper position, and then transports the old switch 56 away from the operation site.

As shown in fig. 15 and 16, an embodiment of a switch replacement system on which the method of the present invention is based specifically includes:

a rail car 40, a first transport flat car 41 and a second transport flat car 42;

the gantry crane 100 provided on the first transportation flat carriage 41 in the transportation state as described in embodiment 1;

a rotary mount 200 provided on the first transportation flat carriage 41 in a transportation state for fixing the gantry crane 100;

the handling tool 33 and the switch 34 are installed on the second transportation flat car 42 in the transportation state.

The transportation adopts the temporary hauling of the rail car 40, one refitted flat car (namely a first transportation flat car 41) is used for transporting a plurality of gantry cranes 100, and two common flat cars (namely a second transportation flat car 42) are used for transporting new and old turnouts, as shown in fig. 15 and 16. The rail car 40, the first transportation flat car 41 or the second transportation flat car 42 is further provided with a power device 43 for powering the swivel mount 200. The power device 43 may be of different types: the battery or generator is driven, and the actuating mechanism can be electrically driven or hydraulically driven. A single drive or a centralized unified power drive mode per swivel mount 200 may be employed.

In the working state, a plurality of gantry cranes 100 are arranged at intervals along the railway line direction (the direction shown as L in fig. 15 and 16) and straddle the roadbed 47 at the two sides of the steel rail 45. The upper part of the lifting tool 33 is connected with the lifting hooks 55 of the gantry cranes 100 through lifting rings 38, and the lower part of the lifting tool 33 is connected with the turnout 34 through a plurality of lifting claws 39. After the turnout 34 is lifted, the mounting frame 37 is driven by the longitudinal moving mechanism 48 to move back and forth along the line direction relative to the carrier beam 36, so that the turnout 34 is accurately positioned longitudinally.

The switch replacing system described in embodiment 2 adopts a group-hanging mode of a plurality of (typically 3 to 5) gantry cranes 100, and transports 3 to 5 gantry cranes 100, a hanging tool 33 and new switches 44 to an operation site through rail trolleys (including a rail trolley 40, a first transportation trolley 41 and a second transportation trolley 42), and the plurality of gantry cranes 100 are sequentially lowered to a designated position according to positions and sequences. Then, the new switch 44 is unloaded and placed under the gantry crane 100 by the cluster crane and dedicated handling tool 33. The old switch 56 is removed again and the new and old switches are replaced by the gantry crane 100. After the line is recovered, the old road fork 56 is lifted to the second transportation flatcar 42, and the plurality of gantry cranes 100 are respectively and sequentially loaded and fixedly driven.

Example 3

As shown in fig. 10 to 14, a rotary mount 200 applied to the switch changing system of embodiment 2 is used to fix a plurality of groups of gantry cranes 100 on a first transportation flat carriage 41 and sequentially disposed at designated positions of a line, and specifically includes:

a fixed mounting seat 21 fixed on the first transportation flat carriage 41, the base of the fixed mounting seat 21 being fixed on the bottom plate 57 of the first transportation flat carriage 41;

the lifting seat 19 is used for fixedly mounting the gantry crane 100, and the lifting seat 19 can perform lifting motion relative to the fixed mounting seat 21 so as to realize the first transport flat car 41 on and off the gantry crane 100;

The swivel bearing 20 is disposed between the fixed mounting seat 21 and the lifting seat 19, and the lifting seat 19 can perform horizontal rotation movement relative to the fixed mounting seat 21 through the swivel bearing 20 so as to adjust the mounting direction of the gantry crane 100.

When in a transport state, the gantry crane 100 is longitudinally fixed to the lifting base 19. When in the deployed state, gantry crane 100 is adjusted to a lateral arrangement by rotation of slew bearing 20. The rotary mounting seat 200 further comprises a rotary driving mechanism 32, one end of the rotary driving mechanism 32 is fixedly mounted on the fixed mounting seat 21, and the other end of the rotary driving mechanism is used for rotationally driving the slewing bearing 20 with the outer ring provided with a gear through the gear to realize a rotary function.

The rotary mounting seat 200 further comprises a locking seat 22 arranged on the lifting seat 19, a plurality of grooves 28 for fixing the gantry crane 100 are formed in the locking seat 22, and the I-shaped cross beam 1 of the gantry crane is clamped and fixed through the grooves 28. A locking mechanism 26 is provided on the side of the locking seat 22 adjacent to each pair of grooves 28, and after the cross beam 1 of the gantry crane 100 is fixed in the groove 28, the gantry crane 100 is locked and mounted in the groove 28 by pressing the cross beam 1 by the locking mechanism 26.

The rotary mounting seat 200 further comprises a guide post seat 23 arranged on the rotary bearing 20, wherein an inner ring of the rotary bearing 20 is fixedly mounted with the guide post seat 23 through bolt connection, and an outer ring of the rotary bearing 20 is fixedly mounted with the fixed mounting seat 21 through bolt connection. The guide post seat 23 is provided with a guide post 25, the guide post 25 penetrates through a through hole formed in the lifting seat 19, and when the lifting mechanism 24 performs telescopic movement, lifting guide of the lifting seat 19 is realized by the guide post 25.

The rotary mounting seat 200 further comprises a lifting mechanism 24, one end of the lifting mechanism 24 is fixedly mounted on the guide post seat 23, the other end of the lifting mechanism 24 is connected to the lifting seat 19, and the lifting function of the gantry crane 100 is achieved through telescopic movement of the lifting mechanism 24. Two sliding mechanisms 27 are provided on the locking seat 22 opposite to each other, a stopper 29 is provided on the lifting seat 19 at a position opposite to the sliding mechanisms 27, and the movable end of the sliding mechanism 27 is in contact with the stopper 29. When the movable end of one of the sliding mechanisms 27 is stretched, the movable end of the other sliding mechanism 27 is contracted, so that the locking seat 22 is driven to slide relative to the lifting seat 19 along the moving direction of the sliding mechanism 27. Two guide protrusions 30 are provided on the lifting seat 19 opposite to each other in the moving direction of the sliding mechanism 27, and two guide grooves 31 corresponding to the guide protrusions 30 are provided on the locking seat 22. The guide groove 31 is slid on the guide protrusion 30 to guide the relative sliding between the locking seat 22 and the lifting seat 19.

Before the gantry crane 100 is transported, the fixed mount 21 is fixed to the bottom plate 57 of the first transport carriage 41, the slewing bearing 20 is disposed between the fixed mount 21 and the lifting seat 19, and the lock seat 22 is disposed on the lifting seat 19. The lifting and lowering movement of the lifting and lowering base 19 relative to the fixed mounting base 21 is performed to realize the first transportation flat car 41 of the gantry crane 100. The lifting base 19 can perform horizontal rotation movement relative to the fixed mounting base 21 by the swivel bearing 20 to adjust the mounting direction of the gantry crane 100.

When in a transportation state, the gantry crane 100 is longitudinally locked and installed in the groove 28 of the fixed installation seat 21, and then the cross beam 1 of the gantry crane 100 is tightly locked through the locking mechanism 26. When the operation site is reached, the lifting mechanism 24 drives the gantry crane 100 to rise to the highest point, and then the rotary driving mechanism 32 drives the gantry crane 100 to rotate to the transverse direction, and the lifting mechanism 24 drives the gantry crane 100 to descend to the operation surface. When the legs 5 of the gantry crane 100 descend to the designated position, the locking mechanism 26 is released and the gantry crane 100 is disengaged from the recess 28 to effect operational deployment of the gantry crane 100.

Before the gantry crane 100 is transported, the opening direction of the groove 28 of the locking seat 22 is consistent with the length direction of the first transportation flat car 41, the power device 43 is started, the height of the lifting seat 19 is adjusted, and the gantry crane 100 is fixed in the groove 28. After the gantry crane 100 is transported to the operation site and reaches a designated position, the gantry crane 100 is rotated by 90 ° as a whole to be perpendicular to the line direction by rotating the slewing bearing 20. The landing leg 5 of the gantry crane 100 descends to the roadbed 47, and the lifting seat 19 descends to enable the gantry crane 100 to be separated from the groove 28, so that the deployment of one gantry crane 100 is completed. All gantry cranes 100 are sequentially deployed to a designated working position, the first transport flat 41 is driven away, and the gantry cranes 100 perform a lifting operation.

After the gantry crane 100 completes the lifting operation, the first transport flat 41 is driven in. The first transportation flatcar 41 runs to a designated position, the gantry crane 100 is aligned with the groove 28, the lifting seat 19 is lifted to enable the groove 28 to approach the gantry crane 100, the locking seat 22 slides back and forth relative to the lifting seat 19, the groove 28 is completely aligned with the beam 1 of the gantry crane 100, the lifting seat 19 is lifted continuously to enable the beam 1 to be fixed in the groove 28, and the locking mechanism 26 is started to compress the beam 1. The legs 5 of the gantry crane 100 retract to the floor 57 of the first transport trolley 41. The remaining gantry cranes 100 are recovered in sequence, and then the swivel bearings 20 are rotated to rotate the entire gantry crane 100 by 90 ° to coincide with the length direction of the first transport flat 41, and the lifting base 19 is lowered again to bring the legs 5 of the gantry crane 100 into contact with the bottom plate 57 of the first transport flat 41. The first transportation flat carriage 41 is driven off the operation site.

Example 4

In this embodiment, other auxiliary process flows such as determination of the supporting point of the gantry crane, leveling of the supporting point, disassembly of the rail fastener, and grinding and leveling of the rail cutting and welding are omitted, and the switch replacement operation method of the present invention will be described in detail by taking a switch replacement process as an example.

Fig. 17 to 38 show an embodiment of a method for replacing a switch according to the present invention, which specifically includes the following steps:

S101) a plurality of gantry cranes 100 are longitudinally fixed on a first transport flat car 41 (in order to adapt to vehicle limitation) through a rotary mounting seat 200 (in the direction shown as L in the accompanying figures 17 and 18), new turnouts 44 and lifting tools 33 are placed on a second transport flat car 42, and are transported to a designated position of an operation site through traction of a rail car 40, as shown in the accompanying figures 17 and 18;

s102), the rail car 40 pulls the first transportation flat car 41 to move to the placement position of the first gantry crane 100, the rotary mounting seat 200 rotates 90 degrees until the gantry crane 100 is vertical to the line direction, and at the moment, the gantry crane 100 is transversely fixed on the first transportation flat car 41 (in the direction shown as W in the figure 20) through the rotary mounting seat 200, as shown in the figures 19 and 20;

s103), the supporting leg 5 of the gantry crane 100 moves to a designated position along the cross beam 1, and the gantry crane 100 is driven to descend by the rotary mounting seat 200; the supporting legs 5 extend downwards to be close to the ground, the locking of the gantry crane 100 is released by the rotary mounting seat 200, the supporting legs 5 continue to extend and level, and the deployment of one gantry crane 100 is completed;

s104) the rail car 40 pulls the first transportation flat car 41 to sequentially move, and the step S103) is repeatedly performed until all the gantry cranes 100 are deployed to the designated positions, as shown in fig. 21 and 22;

S105), the rail car 40 pulls the second transportation flatcar 42 to move to a designated position, the lifting tool 33 is connected with the gantry crane 100 and the new turnout 44 in a hanging way, and the new turnout 44 is lifted, as shown in fig. 23 and 24;

s106) the rail car 40 pulls the first transport flat car 41 and the second transport flat car 42 to leave the switch replacement operation area, and the new switch 44 is laterally moved to the side close to the supporting leg 5 to be stably placed by group-hanging through the plurality of gantry cranes 100, as shown in fig. 25 and 26. The rail car 40 pulls the first transport flat car 41 and the second transport flat car 42 away from each other as shown in fig. 27.

After step S106), the following procedure is also included:

s107) cutting the steel rail 45, removing the fasteners and removing the old turnout 56;

s108) moving the lifting tool 33 to the old turnout 56 through the gantry crane 100 and hanging and lifting the old turnout 56 stably placed on the supporting leg 5 close to the other side of the gantry crane 100, as shown in fig. 28;

s109) the lifting tool 33 is moved to the new switch 44 by the gantry crane 100 and is hung to place the new switch 44 at the old switch 56 smoothly, as shown in fig. 29 and 30. If there is a deviation, the position can be precisely adjusted by moving the mounting frame 37 of the lifting tool 33. And then welding the new turnout 44 with the steel rail 45, installing fasteners and completing the recovery of the line.

After step S109), the following procedure is also included:

s110), the lifting tool 33 is moved to the old turnout 56 through the gantry crane 100 and is hung and lifted;

s111) the rail car 40 pulls the second transportation flat car 42 in;

s112) moves and places the old switch 56 at a designated position of the second transportation flat car 42 by the handling tool 33 as shown in fig. 31 and 32.

After step S112) the following procedure is also included:

s113) the rail car 40 pulls the first transportation flatcar 41 to move to the position below the gantry crane 100 at the final position, and the beam 1 of the gantry crane 100 is aligned with the groove 28 of the rotation mount 200, as shown in fig. 33 and 34;

s114) the leg 5 of the gantry crane 100 is retracted to the beam 1 into the groove 28 of the swivel mount 200 and secured;

s115) the supporting leg 5 of the gantry crane 100 continues to retract to the initial position, and the supporting leg 5 moves to the initial position along the beam 1, at this time, the gantry crane 100 is laterally (in the direction of W in fig. 34) fixed on the first transport flat 41 by the rotation mount 200;

s116) repeatedly executing steps S113) to S115), and completing the recovery process of the rest of gantry cranes 100, as shown in fig. 35 and 36;

s117) the rotary mount 200 rotates until the gantry crane 100 is fixed in the longitudinal direction (direction L shown in fig. 37 and 38), and the railcar 40 pulls the first transport flatcar 41 and the second transport flatcar 42 away from each other, as shown in fig. 37 and 38.

The handling fixture 33 further includes a load beam 36, a mounting frame 37, a lifting ring 38, and a lifting claw 39. The hoisting mechanism 4 further comprises a lifting hook 55 capable of lifting in the vertical direction, the lifting ring 38 is arranged on the upper part of the load beam 36, and the lifting hook 55 is connected with the lifting ring 38. The mounting frame 37 is provided at a lower portion of the load beam 36, and the hanging claws 39 are provided at left and right sides of the mounting frame 37 in the line direction. When the gantry crane 100 performs a lifting operation, the switch 34 is lifted by the lifting claw 39. When the switch 34 is lifted, it is moved back and forth in the line direction on the carrier beam 36 by the mounting frame 37, thereby lifting the switch 34 to a designated longitudinal position. The mounting frame 37 is movably connected with the carrier beam 36, and sprockets 50 are provided at both ends of the carrier beam 36 in the line direction, and the two sprockets 50 are connected by a chain 51. The chain 51 is connected with the mounting frame 37, one of the chain wheels 50 is driven to rotate by the longitudinal moving mechanism 48, and the chain wheel 50 rotates to drive the chain 51 to move along the line direction, so that the longitudinal movement of the mounting frame 37 is realized.

The gantry crane 100 further comprises a sliding frame 2 and a hoisting mechanism 4, wherein the sliding frame 2 is movably arranged at the left end and the right end of the beam 1, and the sliding frame 2 can transversely move along the beam 1. A hoisting mechanism 4 is arranged on the cross beam 1 between the two sliding frames 2, and the hoisting mechanism 4 can transversely move along the cross beam 1. Legs 5 which can extend and retract in the vertical direction are respectively arranged below the two sliding frames 2. A sliding driving mechanism 3 is arranged between the cross beam 1 and the sliding frame 2.

The slide frame 2 is provided with a traversing support 54 with internal threads, and the cross beam 1 is provided with a mounting seat 49. The sliding driving mechanism 3 adopts a power driving screw mechanism, the power driving end of the sliding driving mechanism 3 is fixed on the mounting seat 49, the screw end is connected to the transverse moving support 54, and the sliding frame 2 is driven to realize transverse moving by the rotation of the power driving screw. The lower part of the supporting leg 5 is provided with an adjustable supporting leg 8, and the supporting leg 5 and the gantry crane 100 can be leveled through the adjustable supporting leg 8 in the deployment process of the gantry crane 100.

The sliding frame 2 is internally provided with a wedge-shaped locking mechanism 18, and the wedge-shaped locking mechanism 18 is positioned between the cross beam 1 and the sliding frame 2 and comprises two wedge-shaped sliding blocks which are contacted with each other. After passing through the sliding frame 2, the locking mechanism 52 compresses the two wedge-shaped sliding blocks to lock the position of the sliding frame 2. After the transverse spans of the two support legs 5 are adjusted in place, the position locking of the sliding frame 2 is achieved through the wedge-shaped locking mechanism 18.

The leg 5 further comprises a screw barrel 6, a screw 9, a support 10 and a leg sleeve 11. A screw thread cylinder 6 is connected below the sliding frame 2, a supporting leg sleeve 11 is sleeved below the screw thread cylinder 6, and a support 10 is arranged below the supporting leg sleeve 11. The lifting driving mechanism 7 is arranged in the support 10, the screw rod 9 is arranged in the supporting leg sleeve 11, the upper end of the screw rod 9 is connected with the threaded cylinder 6 through threads, and the lower end of the screw rod 9 is connected with the lifting driving mechanism 7. A bearing 13 is provided between the screw 9 and the support 10. The lifting driving mechanism 7 drives the screw rod 9 to rotate so that the threaded cylinder 6 moves up and down, and the telescopic function of the supporting leg 5 is realized.

In the description of the present application, it will be noted that when an element is referred to as being "fixed" or "disposed" on another element, it can be directly on the other element or be indirectly disposed on the other element; when an element is referred to as being "connected to" another element, it can be directly connected to the other element or be indirectly connected to the other element.

It is to be understood that the terms "center," "longitudinal," "transverse," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like indicate or are based on the orientation or positional relationship shown in the drawings, merely for convenience of description and to simplify the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be configured and operated in a particular orientation, and therefore should not be construed as limiting the present application.

Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include one or more such feature. In the description of the present application, the meaning of "a plurality" or "a number" is two or more, unless explicitly defined otherwise.

It should be understood that the structures, proportions, sizes, etc. shown in the drawings are for illustration purposes only and should not be construed as limiting the scope of the present disclosure, since any structural modifications, proportional changes, or dimensional adjustments made by those skilled in the art should not be made in the present disclosure without affecting the efficacy or achievement of the present disclosure.

By implementing the technical scheme of the turnout replacement operation method described by the specific embodiment of the invention, the following technical effects can be produced:

(1) According to the turnout replacement operation method described by the specific embodiment of the invention, the gantry crane supporting legs are arranged on the two sides of a railway line in a crossing way, adjacent line operation is not required, the safety risk of operation overstepping is avoided, meanwhile, the device is simple in structure, high in reliability, convenient to maintain and overhaul and high in operation efficiency, and large-size turnout component lifting can be realized;

(2) The turnout replacement operation method described by the specific embodiment of the invention is suitable for replacing the whole group of turnouts and replacing single switch rails, switch points and the like, and can realize the carrying, placement, position adjustment and replacement of various circuit components with different lengths through the combination of a plurality of gantry cranes, in particular to realize the lifting of large-size turnout components;

(3) According to the turnout replacement operation method described in the specific embodiment of the invention, the gantry crane has the functions of supporting leg transverse movement, lifting and leveling, the supporting leg transverse span distance and the ground height are adjustable, the functions of meeting the requirements of different road ground working conditions can be met, the height of the gantry crane device is adjustable, and the risk of touching the contact net in the lifting process is avoided;

(4) According to the turnout replacement operation method, the manufacturing cost of the gantry crane is low, the number of operators is small, the replacement is quick, the efficiency is high, the gantry crane is longitudinally arranged on a flat car during transportation and does not exceed the limit of the car, and the hanging points of the hoisting tool can longitudinally move, so that the turnout is positioned more accurately.

In this specification, each embodiment is described in a progressive manner, and each embodiment is mainly described by a difference from other embodiments, and identical and similar parts between the embodiments are referred to each other.

The above description is only of the preferred embodiment of the present invention, and is not intended to limit the present invention in any way. While the invention has been described in terms of preferred embodiments, it is not intended to be limiting. Any person skilled in the art can make many possible variations and modifications to the technical solution of the present invention or equivalent embodiments using the method and technical solution disclosed above without departing from the spirit and technical solution of the present invention. Therefore, any simple modification, equivalent substitution, equivalent variation and modification of the above embodiments according to the technical substance of the present invention still fall within the scope of the technical solution of the present invention, unless departing from the technical solution of the present invention.

Claims

1. The turnout replacement operation method is characterized by comprising the following steps of:

s101) a plurality of gantry cranes (100) are longitudinally fixed on a first transport flat car (41) through a rotary mounting seat (200), new turnouts (44) and lifting tools (33) are placed on a second transport flat car (42), and are transported to a designated position of an operation site in a traction mode through a rail car (40);

s102) the rail car (40) pulls the first transportation flatcar (41) to move to the placement position of the first gantry crane (100), and the rotary mounting seat (200) rotates by 90 degrees until the gantry crane (100) is vertical to the line direction;

s103) the supporting leg (5) of the gantry crane (100) moves to a designated position along the cross beam (1), and the rotary mounting seat (200) drives the gantry crane (100) to descend; the supporting legs (5) extend downwards to be close to the ground, the rotary mounting seats (200) release locking of the gantry crane (100), the supporting legs (5) continue to extend and level, and deployment of one gantry crane (100) is completed;

s104) the rail car (40) pulls the first transportation flatcar (41) to sequentially move, and the step S103) is repeatedly executed until all the gantry cranes (100) are deployed to the designated positions;

S105) the rail car (40) pulls the second transportation flatcar (42) to move to a designated position, the lifting tool (33) is connected with the gantry crane (100) and the new turnout (44) in a hanging way, and the new turnout (44) is lifted;

s106) the rail car (40) pulls the first transport flat car (41) and the second transport flat car (42) to leave a replacement operation area, and a plurality of gantry cranes (100) are used for carrying out group crane to transversely move a new turnout (44) to a side close to the supporting leg (5) for placement;

s107) cutting the steel rail (45), removing the fasteners and removing the old turnout (56);

s108) moving the lifting tool (33) to the old turnout (56) through the gantry crane (100) and hanging and lifting the old turnout (56) and placing the old turnout (56) on the supporting leg (5) close to the other side of the gantry crane (100);

s109) moving a lifting tool (33) to a new turnout (44) through the gantry crane (100) and hanging and lifting the new turnout (44) at the position of an old turnout (56); welding the new turnout (44) with a steel rail (45), installing fasteners and finishing the recovery of the line;

s110) moving the lifting tool (33) to the old turnout (56) through the gantry crane (100) and hanging and lifting the old turnout;

S111) the rail car (40) pulls in a second transport flat car (42);

s112) moving and placing the old turnout (56) at a designated position of the second transport flat car (42) through the lifting tool (33);

s113) the rail car (40) pulls the first transportation flatcar (41) to move below the gantry crane (100) at the final position, and the cross beam (1) of the gantry crane (100) is aligned with the groove (28) of the rotary mounting seat (200);

s114) the supporting legs (5) of the gantry crane (100) are contracted into the grooves (28) of the cross beam (1) entering the rotary mounting seat (200) and are fixed;

s115) the supporting leg (5) of the gantry crane (100) continues to shrink to a starting position, and the supporting leg (5) moves to the starting position along the cross beam (1);

s116) repeatedly executing the steps S113) to S115) to finish the recovery process of the rest gantry cranes (100);

s117) the rotary mounting seat (200) rotates until the gantry crane (100) is longitudinally fixed, and the rail car (40) pulls the first transport flat car (41) and the second transport flat car (42) to leave.

2. The switch changing operation method according to claim 1, wherein: the gantry crane (100) further comprises a sliding frame (2) and a lifting mechanism (4), the sliding frame (2) is movably arranged at the left end and the right end of the cross beam (1), and the sliding frame (2) can transversely move along the cross beam (1); a lifting mechanism (4) is arranged on the cross beam (1) between the two sliding frames (2), and the lifting mechanism (4) can transversely move along the cross beam (1); legs (5) which can stretch in the vertical direction are respectively arranged below the two sliding frames (2); a sliding driving mechanism (3) is arranged between the cross beam (1) and the sliding frame (2).

3. The switch changing operation method according to claim 2, wherein: a transverse support (57) with internal threads is arranged on the sliding frame (2), and a mounting seat (49) is arranged on the cross beam (1); the sliding driving mechanism (3) adopts a power driving screw mechanism, the power driving end of the sliding driving mechanism (3) is fixed on the mounting seat (49), the screw end is connected to the transverse moving support (57), and the sliding frame (2) is driven to realize transverse moving by the rotation of the power driving screw.

4. A switch changing method according to claim 3, wherein: a wedge-shaped locking mechanism (18) is arranged in the sliding frame (2), and the wedge-shaped locking mechanism (18) is positioned between the cross beam (1) and the sliding frame (2) and comprises two wedge-shaped sliding blocks which are in contact with each other; the locking mechanism (48) compresses the two wedge-shaped sliding blocks after penetrating through the sliding frame (2) so as to lock the position of the sliding frame (2); when the transverse span of the two supporting legs (5) is adjusted in place, the wedge-shaped locking mechanism (18) is used for realizing the position locking of the sliding frame (2).

5. The switch changing operation method according to claim 2, 3 or 4, wherein: the support leg (5) comprises a threaded cylinder (6), a screw (9), a support (10) and a support leg sleeve (11); a threaded cylinder (6) is connected below the sliding frame (2), a supporting leg sleeve (11) is sleeved below the threaded cylinder (6), and a support (10) is arranged below the supporting leg sleeve (11); a lifting driving mechanism (7) is arranged in the support (10), a screw rod (9) is arranged in the supporting leg sleeve (11), the upper end of the screw rod (9) is connected with the threaded cylinder (6) through threads, and the lower end of the screw rod is connected with the lifting driving mechanism (7); the lifting driving mechanism (7) drives the screw rod (9) to rotate so that the threaded cylinder (6) moves up and down, and the telescopic function of the supporting leg (5) is realized.

6. The switch changing operation method according to claim 5, wherein: a bearing (13) is arranged between the screw (9) and the support (10).

7. The switch changing operation method according to claim 2, 3, 4 or 6, characterized in that: the lifting tool (33) comprises a bearing beam (36), a mounting rack (37), a lifting ring (38) and a lifting claw (39); the lifting mechanism (4) comprises a lifting hook (55) capable of lifting vertically, the lifting ring (38) is arranged on the upper part of the bearing beam (36), and the lifting hook (55) is connected with the lifting ring (38); the mounting frame (37) is arranged at the lower part of the bearing beam (36), and the lifting claws (39) are arranged at the left side and the right side of the mounting frame (37) along the line direction; when the gantry crane (100) performs lifting operation, the turnout (34) is lifted by the lifting claw (39); when the turnout (34) is lifted, the turnout (34) is lifted to a designated longitudinal position by moving the mounting frame (37) back and forth on the bearing beam (36) along the line direction.

8. The switch changing operation method according to claim 7, wherein: the mounting frame (37) is movably connected with the bearing beam (36), chain wheels (50) are arranged at two ends of the bearing beam (36) along the line direction, and the two chain wheels (50) are connected through a chain (51); the chain (51) is connected with the mounting frame (37), one of the chain wheels (50) is driven to rotate through the longitudinal moving mechanism (52), and the chain wheel (50) is driven to move along the line direction by rotation of the chain wheel (50), so that the longitudinal movement of the mounting frame (37) is realized.

9. The switch changing operation method according to claim 1, 2, 3, 4, 6 or 8, characterized in that: the lower part of the supporting leg (5) is provided with an adjustable supporting leg (8), and the supporting leg (5) and the gantry crane (100) can be leveled through the adjustable supporting leg (8) in the deployment process of the gantry crane (100).