A gantry group crane operation method for a rail line

Abstract

The present invention discloses a method for group lifting operation of a gantry on a rail line. Several gantry cranes are longitudinally fixed on a first transport flat car through a rotating mounting seat. A new turnout and a lifting tool are placed on a second transport flat car and transported to a designated position on the operation site by a rail car. The first transport flat car is towed by the rail car, and the gantry cranes are deployed to designated positions of the line in sequence using the rotating mounting seat. The rail car tows the second transport flat car to move to the designated position, and the lifting tool is connected to the lifting mechanisms of several gantry cranes to realize group lifting operation, and the lifting tool moves and lifts the new turnout. The rail car tows the first transport flat car and the second transport flat car away, and a group lifting is performed by several gantry cranes to move the new turnout horizontally to the side close to the support legs. The present invention can solve the technical problems of the existing method having a single function, low synchronization control accuracy, lack of control over the final position of each crane and load consistency during operation, and inconvenient operation and maintenance.

Description

Technical Field

[0001] The invention relates to the technical field of railway engineering machinery, and in particular to a track line gantry group hoisting operation method for a high-speed railway ballastless track. Background Art

[0002] Whether it is an existing line or a high-speed rail line, these railway lines need to lift heavy objects during maintenance or replacement operations. In particular, the replacement of large components on the track line requires the use of lifting equipment. These large components, such as turnout components, track plates and rails, are often long and slender, and have poor rigidity, and special equipment is required for lifting operations. At present, rail cranes are mainly used to lift heavy objects on my country's rail lines. Automobile cranes and other simple lifting tools can be used in places where it is convenient to operate. However, these equipment and machines have common disadvantages: First, rail cranes are expensive and easy to touch the contact network, occupy adjacent line space, have low operating safety, and cannot achieve the lifting of large-sized line components; second, automobile cranes cannot reach some places, and the application occasions are greatly limited, so it is impossible to achieve the lifting of large-sized line components; third, simple machines need to be assembled on site, which is not convenient to use, and the operating efficiency is low, and it is impossible to achieve the lifting of large-sized line components.

[0003] In the prior art, the following technical solutions are mainly related to the present invention:

[0004] Prior art 1 is a Chinese utility model patent applied by Shaanxi Jiangfeng Construction Engineering Co., Ltd. on April 29, 2014 and announced on November 19, 2014, with the announcement number CN203950150U. The utility model discloses a group crane synchronous control system, including a control terminal, a main controller, a sub-controller, and a remote monitoring computer. The main controller is used to execute the command of the control terminal and receive the information fed back by the sub-controller; the sub-controller is used to execute the command of the main controller and receive the information collected by the tension sensor; the control terminal and the main controller and the remote monitoring computer adopt a wireless communication control method; the main controller receives the control instructions sent by the remote monitoring computer to realize the control of the forward / reverse / stop of all electric hoist motors; an A / D converter is provided to collect the output signal of the tension sensor, send it to the single-chip microcomputer through the SPI interface, convert it into a tension signal, and then send it to the remote monitoring computer to display it to the user. The system is easy to operate, improves the safety performance of the group crane system, has an overload shutdown alarm, and a response speed of milliseconds, which is particularly suitable for the lifting operation with obstructed vision and prone to collision and scratching. However, the group crane synchronization control system of the prior art 1 is applied to the construction industry, and its control object is a tower crane. The synchronization control precision requirement is not high, the system integration degree is low, and it is not convenient for operation and maintenance. The invention involves few control points, and only controls the synchronization of a certain direction, with a single function; and lacks consistency control of the final position between each crane in the group crane; even if it has an overload warning function, it lacks control over the consistency of the load between each crane during the operation process. Summary of the invention

[0005] In view of this, the purpose of the present invention is to provide a rail line gantry group lifting operation method to solve the technical problems of the existing group lifting method, such as single function, low synchronization control accuracy, lack of consistency control of the final position of each crane and the load during the operation, and inconvenient operation and maintenance.

[0006] In order to achieve the above-mentioned invention object, the present invention specifically provides a technical implementation scheme of a rail line gantry group crane operation method, and the rail line gantry group crane operation method comprises the following steps:

[0007] S101) A plurality of gantry cranes are longitudinally fixed on a first transport flat car through a rotating mounting seat, a new turnout and a lifting tool are placed on a second transport flat car, and transported to a designated location at the work site by a rail car;

[0008] S102) using the rail vehicle to pull the first transport flat car, and using the rotating mounting seat to sequentially deploy the gantry crane to designated positions of the line;

[0009] S103) the rail vehicle pulls the second transport flat car to move to a designated position, the lifting tool is connected to the lifting mechanisms of several gantry cranes to achieve group lifting operation, and the lifting tool moves and lifts the new turnout;

[0010] S104) The rail vehicle pulls the first transport flat car and the second transport flat car away, and a number of gantry cranes are used to perform group lifting to move the new turnout laterally to the side close to the support legs and place it.

[0011] Further, the step S102) includes:

[0012] S1021) The rail vehicle pulls the first transport flat car to move to the placement position of the first gantry crane, and the rotating mounting seat rotates 90° until the gantry crane is perpendicular to the line direction;

[0013] S1022) The legs of the gantry crane move along the crossbeam to a specified position, and the rotating mounting seat drives the gantry crane to descend; the legs extend downward to close to the ground, and the locking of the gantry crane by the rotating mounting seat is released, and the legs continue to extend and are leveled, completing the deployment of a gantry crane;

[0014] S1023) The rail vehicle pulls the first transport flat car to move sequentially, and step S1022) is repeated until all gantry cranes are deployed to the designated positions.

[0015] Furthermore, after step S104), the following process is also included:

[0016] S105) cutting rails, removing fasteners, and dismantling old turnouts;

[0017] S106) moving the lifting tool to the old turnout by the gantry crane and hanging and lifting it, and placing the old turnout on the support leg on the other side of the gantry crane;

[0018] S107) The lifting tool is moved to the new turnout by the gantry crane and is hung and lifted, and the new turnout is placed at the position of the old turnout; the new turnout is welded to the rail, and fasteners are installed, and the line is restored.

[0019] Furthermore, after step S107), the following process is also included:

[0020] S108) moving the lifting tool to the old turnout by the gantry crane and hanging and lifting it;

[0021] S109) the rail vehicle pulls the second transport flat car in;

[0022] S110) The old turnout is moved by the lifting device and placed at a designated position of the second transport flat car.

[0023] Furthermore, after step S110), the following process is also included:

[0024] S111) the rail vehicle pulls the first transport flat car to move to below the gantry crane at the final position, and the crossbeam of the gantry crane is aligned with the groove position of the rotating mounting seat;

[0025] S112) the legs of the gantry crane are retracted until the crossbeam enters the groove of the rotating mounting seat and is fixed;

[0026] S113) the legs of the gantry crane continue to retract to the starting position, and the legs move along the crossbeam to the starting position;

[0027] S114) repeating steps S111) to S113) to complete the recovery process of the remaining gantry cranes;

[0028] S115) The rotating mounting seat is rotated until the gantry crane is longitudinally fixed, and the rail vehicle pulls the first transport flat car and the second transport flat car away.

[0029] Furthermore, during the lifting operation of the new turnout or the old turnout, the gantry crane is synchronously controlled to lift the new turnout in lateral and vertical movements.

[0030] Furthermore, the step S102) further includes:

[0031] After the first gantry crane is deployed, the subsequently deployed gantry crane obtains the distance between itself and the adjacent gantry crane through the second distance sensor arranged on the two sliding frames or the legs, and adjusts the rotation angle of the rotating mount to meet the parallelism requirement between the beams of the two gantry cranes.

[0032] Furthermore, a first distance sensor is arranged on the lifting mechanism. When the gantry crane is performing lifting operations, the first distance sensor obtains the distance between the lifting mechanism and the support legs. The distance difference between the support legs on the same side of each gantry crane and the lifting mechanism is controlled to meet the set requirements, so as to achieve lateral position alignment when multiple gantry cranes lift the turnout synchronously.

[0033] Furthermore, an adjustable foot is provided at the lower part of the support leg, and the leveling function of the support leg and the gantry crane is realized by the adjustable foot. A tilt sensor is provided on the crossbeam, and the tilt state data of the gantry crane is obtained by the tilt sensor during the deployment of the gantry crane, and the leveling of the crossbeam is realized by fine-tuning the adjustable foot.

[0034] Furthermore, a force sensor is arranged on the lifting mechanism, and when the gantry crane starts to lift the new turnout or the old turnout, the lifting mechanism of each gantry crane uses the collected value of the force sensor at this time as the reference value. If the change value exceeds the standard value during the subsequent lifting process, the motor speed of the lifting mechanism is adjusted so that the collected value of the force sensor of the lifting mechanism during the lifting process is maintained substantially equivalent to the reference value, so as to realize the vertical stability control when multiple gantry cranes lift the turnout synchronously.

[0035] Furthermore, the lifting tooling includes a load-bearing beam, a mounting frame, a lifting ring and a lifting claw. The lifting mechanism includes a lifting hook that can be lifted and lowered in the vertical direction, the lifting ring is arranged on the upper part of the load-bearing beam, and the hook is connected to the lifting ring. The mounting frame is arranged at the lower part of the load-bearing beam, and the lifting claw is arranged on the left and right sides of the mounting frame along the line direction.

[0036] Furthermore, the mounting frame is movably connected to the load-bearing beam, and sprockets are provided at both ends of the load-bearing beam along the line direction, and the two sprockets are connected by a chain. The chain is connected to the mounting frame, and one of the sprockets is driven to rotate by the longitudinal movement mechanism, and the rotation of the sprocket drives the chain to move along the line direction, thereby realizing the longitudinal movement of the mounting frame.

[0037] By implementing the technical solution of the rail line gantry group crane operation method provided by the present invention, the following beneficial effects are achieved:

[0038] (1) The rail line gantry crane group crane operation method of the present invention has the functions of lateral movement, lifting and leveling of the legs. The lateral span spacing of the legs, the height from the ground, the lifting position and the height can all be precisely adjusted to meet the functions required by different line ground conditions. The gantry crane is height-adjustable, and there is no risk of touching the contact network during the lifting process, which is convenient for consistency control operation and maintenance;

[0039] (2) The rail line gantry crane operation method of the present invention is suitable for replacing a whole set of turnouts as well as replacing a single point rail, turnout core, etc., and can realize the transportation, placement, position adjustment and replacement of various line components of different lengths through the combination of multiple gantry cranes; and the replacement of line components will not occupy the adjacent line space, the operation is flexible, there is no operational safety risk, and it can well meet the operational requirements under complex line conditions;

[0040] (3) The rail line gantry crane operation method of the present invention has a simple structure, high reliability, easy maintenance and repair, low manufacturing cost, high operating efficiency, small space occupation, light weight, placement and recovery can be achieved through a lifting platform, and the transportation, placement, operation and recovery of the gantry crane can all be wirelessly controlled, with a high degree of integration and intelligence, and further improved operating efficiency;

[0041] (4) In the rail line gantry crane group crane operation method of the present invention, the inclination of the gantry crane's crossbeam is fed back through the inclination sensor, and the height of the legs is fine-tuned to make the crossbeam inclination meet the requirements; by installing distance measuring sensors on the two legs or sliding frames of the gantry crane, the parallelism requirements of the front and rear gantry cranes can be guaranteed; the lifting mechanism is provided with a lateral position sensor so that each hook is in the same lateral position; a force sensor is provided on the lifting mechanism's rotating shaft to meet the stability requirements of synchronous lifting. BRIEF DESCRIPTION OF THE DRAWINGS

[0042] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the prior art descriptions. Obviously, the drawings described below are only some embodiments of the present invention, and for ordinary technicians in this field, other embodiments can be obtained based on these drawings without creative work.

[0043] Figure 1 It is a schematic diagram of the three-dimensional structure of a gantry crane in a specific embodiment of the track line gantry hoisting device based on the method of the present invention;

[0044] Figure 2 It is a front structural schematic diagram of a gantry crane in a specific embodiment of the track line gantry hoisting device based on the method of the present invention;

[0045] Figure 3 It is a schematic diagram of the side structure of a gantry crane in a specific embodiment of the track line gantry hoisting device based on the method of the present invention;

[0046] Figure 4 It is a side structural perspective view of a gantry crane in a specific embodiment of the track line gantry hoisting device based on the method of the present invention;

[0047] Figure 5 It is a schematic top view of the structure of a gantry crane in a specific embodiment of the track line gantry hoisting device based on the method of the present invention;

[0048] Figure 6 It is a schematic diagram of the transverse structure of a lifting tool in a specific embodiment of the track line gantry lifting device based on the method of the present invention;

[0049] Figure 7 It is a longitudinal structural schematic diagram of a lifting tool in a specific embodiment of the track line gantry lifting device based on the method of the present invention;

[0050] Figure 8 It is a three-dimensional structural schematic diagram of a lifting tool in a specific embodiment of the track line gantry lifting device based on the method of the present invention;

[0051] Fig. 9It is a schematic diagram of the installation structure of a gantry crane in a specific embodiment of the track line gantry hoisting device based on the method of the present invention;

[0052] Fig.10 It is a schematic structural diagram of a rotating mounting seat in a specific embodiment of the track line gantry group crane system based on the method of the present invention;

[0053] Fig.11 It is a schematic diagram of the three-dimensional structure of a rotating mounting seat in a specific embodiment of the track line gantry group crane system based on the method of the present invention;

[0054] Fig.12 It is a schematic bottom view of the structure of a rotating mounting seat in a specific embodiment of the track line gantry group crane system based on the method of the present invention;

[0055] Fig.13 It is a schematic diagram of the side structure of a rotating mounting seat in a specific embodiment of the track line gantry group crane system based on the method of the present invention;

[0056] Fig.14 It is a schematic diagram of the side structure of a rotating mounting seat in another viewing angle in a specific embodiment of the track line gantry group crane system based on the method of the present invention;

[0057] Fig.15 It is a structural schematic diagram of a wireless remote control device in a specific embodiment of the track line gantry group crane system based on the method of the present invention;

[0058] Fig.16 It is a structural schematic diagram of a specific embodiment of the track line gantry group crane system based on the method of the present invention in a side view;

[0059] Fig.17 It is a schematic structural diagram of a specific embodiment of the track line gantry group crane system based on the method of the present invention from a top view;

[0060] Fig.18 It is a schematic diagram of a gantry crane transportation step in a specific embodiment of the rail line gantry crane operation method of the present invention from a side view perspective;

[0061] Fig.19 It is a schematic diagram of a gantry crane transportation step in a specific embodiment of the rail line gantry crane operation method of the present invention from a top view;

[0062] Fig. 20 It is a schematic diagram of a step of rotating a gantry crane to a horizontal direction in a specific embodiment of a gantry crane group crane operation method for a rail line according to the present invention from a side view perspective;

[0063] Fig.21It is a schematic diagram of a step of rotating a gantry crane to a horizontal direction in a top-down perspective in a specific embodiment of a gantry crane group crane operation method for a rail line of the present invention;

[0064] Fig. 22 It is a schematic diagram of the step of telescopically disembarking a gantry crane in a specific embodiment of the rail line gantry crane operation method of the present invention from a side view perspective;

[0065] Fig.23 It is a schematic diagram of the steps of telescoping and disembarking a gantry crane in a specific embodiment of the rail line gantry crane operation method of the present invention from a top-down perspective;

[0066] Fig.24 It is a schematic diagram of a new turnout lifting step in a specific embodiment of the rail line gantry group lifting operation method of the present invention from a side view perspective;

[0067] Fig.25 It is a schematic diagram of a new turnout lifting step in a specific embodiment of the rail line gantry group lifting operation method of the present invention from a top view;

[0068] Fig.26 It is a schematic diagram of a new turnout placement step in a specific embodiment of the rail line gantry group crane operation method of the present invention from a side view perspective;

[0069] Fig. 27 It is a schematic diagram of a new turnout placement step in a specific embodiment of the rail line gantry group crane operation method of the present invention from a top view;

[0070] Fig.28 It is a schematic diagram of the steps of removing the old turnout in a specific embodiment of the rail line gantry group crane operation method of the present invention from a top view;

[0071] Fig.29 It is a schematic diagram of the steps of lifting and placing an old turnout in a specific embodiment of the rail line gantry group crane operation method of the present invention from a top view;

[0072] Fig.30 It is a schematic diagram of a new turnout installation step in a specific embodiment of the rail line gantry group crane operation method of the present invention from a top view;

[0073] Fig.31 It is a schematic diagram of the old turnout lifting step in a specific embodiment of the rail line gantry group lifting operation method of the present invention from a side view perspective;

[0074] Fig.32 It is a schematic diagram of the steps of lifting an old turnout in a specific embodiment of the rail line gantry group lifting operation method of the present invention from a top view;

[0075] Fig.33It is a schematic diagram of a step of placing an old turnout on a flat car in a specific embodiment of the rail line gantry group crane operation method of the present invention from a top view;

[0076] Fig.34 It is a schematic diagram of a step of driving a flat car to a gantry crane recovery position in a specific embodiment of a rail line gantry crane operation method of the present invention from a side view perspective;

[0077] Fig.35 It is a schematic diagram of a step of driving a flat car to a gantry crane recovery position in a specific embodiment of a rail line gantry crane operation method of the present invention from a top view;

[0078] Fig.36 It is a schematic diagram of a step of recovering a gantry crane to a flat car in a specific embodiment of a gantry crane group crane operation method for a rail line of the present invention from a side view perspective;

[0079] Fig.37 It is a schematic diagram of a step of recovering a gantry crane to a flat car in a specific embodiment of a gantry crane group crane operation method for a rail line of the present invention from a top view;

[0080] Fig.38 It is a schematic diagram of a step of rotating a gantry crane to a longitudinal fixation in a specific embodiment of a gantry crane group crane operation method for a rail line of the present invention from a side view perspective;

[0081] Fig.39 It is a schematic diagram of a step of rotating a gantry crane to a longitudinal fixation in a specific embodiment of a gantry crane group crane operation method for a rail line of the present invention from a top view;

[0082] In the figure: 1-beam, 2-sliding frame, 3-sliding drive mechanism, 4-lifting mechanism, 5-leg, 6-threaded cylinder, 7-lifting drive mechanism, 8-adjustable foot, 9-screw, 10-support, 11-leg sleeve, 12-power cabinet, 13-bearing, 14-first distance sensor, 15-second distance sensor, 16-force sensor, 17-tilt sensor, 18-wedge locking mechanism, 19-lifting seat, 20-slewing bearing, 21-fixed mounting seat, 22-locking seat, 23-guide column seat, 24-lifting mechanism, 25-guide column, 26-locking mechanism, 27-sliding mechanism, 28-groove, 29-stopper, 30-guide protrusion, 31-guide groove, 32-rotating drive mechanism, 33-lifting tooling, 34-turnout, 35-track plate, 36-bearing beam, 37-mounting frame, 38-lifting ring, 39-lifting claw, 40-rail car, 41-first transport flat car, 42-second transport flat car, 43-power unit, 44-new turnout, 45-rail, 46-base, 47-roadbed, 48-longitudinal movement mechanism, 49-fixed seat, 50-sprocket, 51-chain, 52-locking mechanism, 53-mounting seat, 54-transverse support, 55-hook, 56-old turnout, 57-wireless remote control device, 58-gantry crane operating area, 59-integrated operation operating area, 60-bottom plate, 100-gantry crane, 200-rotating mounting seat. DETAILED DESCRIPTION

[0083] In order to make the purpose, technical solution and advantages of the embodiments of the present invention clearer, the technical solution in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0084] The following embodiments specifically take railway turnout lifting operations as an example to introduce the track line gantry group lifting operation method of the present invention in detail, but it should be particularly noted that the technical solution of the present invention can also be applied to other track line component lifting operations.

[0085] As attached Figure 1 To Attachment Fig.39 As shown, a specific embodiment of the rail line gantry group crane operation method of the present invention is given, and the present invention is further described below in conjunction with the accompanying drawings and specific embodiments.

[0086] Example 1

[0087] In order to solve the technical problems existing in the existing lifting equipment for rail lines, Example 1 provides a rail line gantry lifting device based on a gantry crane 100 with simple structure, low cost, and convenient and quick operation. By adopting an intelligent gantry crane with adjustable span and height, the technical problems existing in the existing lifting equipment for rail lines can be solved. The rail line gantry lifting device can use the skylight time and use a transport flat car to transport the gantry crane 100, the lifting tool 33, and the objects that need to be operated (such as: turnouts) to the operation site for lifting operations.

[0088] As attached Figure 1 To Attachment Fig. 9 As shown, an embodiment of a rail line gantry hoisting device based on the method of the present invention specifically includes a gantry crane 100, and the gantry crane 100 further includes:

[0089] Beam 1;

[0090] Sliding frames 2 are movably arranged at the left and right ends of the beam 1, respectively, and the sliding frames 2 can move laterally along the beam 1 to adjust the transverse span of the gantry crane 100;

[0091] It is arranged on the crossbeam 1 and is located between the two sliding frames 2. It can move horizontally along the crossbeam 1 (such as the attached Figure 1 A lifting mechanism 4 that moves in the direction indicated by W in the figure to adjust the lifting position of the turnout;

[0092] They are arranged below the two sliding frames 2 and can be moved vertically (such as Figure 1 The legs 5 are telescopic (in the direction indicated by H) to adjust the height of the crossbeam 1 from the roadbed 47;

[0093] The lifting mechanism 4 is further provided with a first distance sensor 14, which is used to obtain the distance between the lifting mechanism 4 and the support leg 5, so as to achieve the alignment of the lateral positions when the multiple gantry cranes 100 lift the turnout 34. When the gantry crane 100 performs a lifting operation, the first distance sensor 14 obtains the distance between the lifting mechanism 4 and the support leg 5, and controls the distance difference between the support leg 5 on the same side of each gantry crane 100 and the lifting mechanism 4 to meet the set requirements, so as to achieve the alignment of the lateral positions when the multiple gantry cranes 100 synchronously lift the turnout 34.

[0094] As attached Fig. 9As shown, when the gantry crane 100 is deployed from the first transport flat car 41 to the railway line, the gantry crane 100 is supported on the roadbed 47 on both sides of the railway line by the legs 5, and the roadbed 47 is provided with a base 46, and the base 46 is provided with a track plate 35, and the rail 45 is provided on the track plate 35. The total height H of the gantry crane 100 is ≥ the height H1 of the bottom plate 57 of the first transport flat car 41 from the rail surface of the rail 45 + the height H2 of the rail surface of the rail 45 from the roadbed 47 + the clearance H3 of the lifting mechanism 4. Among them, the clearance H3 of the lifting mechanism 4 is the distance between the hook 55 of the gantry crane 100 and the crossbeam 1 when it is at the highest position.

[0095] The two sliding frames 2 or the legs 5 of the gantry crane 100 are further provided with a second distance sensor 15, which is used to obtain the distance between the adjacent gantry cranes 100 to meet the parallelism requirement between the beams 1 of the two gantry cranes 100. After the first gantry crane 100 is deployed, the gantry crane 100 deployed later obtains the distance between the adjacent gantry cranes 100 through the second distance sensors 15 provided on the two sliding frames 2 or the legs 5, and meets the parallelism requirement between the beams 1 of the two gantry cranes 100 by adjusting the rotation angle of the rotating mounting seat 200.

[0096] A force sensor 16 is further provided on the lifting mechanism 4 to achieve stability control when multiple gantry cranes 100 lift the turnout 34. When the gantry crane 100 starts lifting the new turnout 44 or the old turnout 56, the lifting mechanism 4 of each gantry crane 100 uses the collected value of the force sensor 16 at this time (i.e., the load just lifted off the ground) as the reference value. If the change value exceeds the standard value during the subsequent lifting process, the motor speed of the lifting mechanism 4 is adjusted (which can be achieved by controlling the motor current) so that the collected value of the force sensor 16 of the lifting mechanism 4 during the lifting process is maintained substantially equivalent to the reference value, so as to achieve vertical stability control when multiple gantry cranes 100 lift the turnout 34 synchronously.

[0097] The gantry crane 100 further includes a sliding drive mechanism 3, a sliding frame 2 is sleeved on the cross beam 1, one end of the sliding drive mechanism 3 is arranged on the cross beam 1, and the other end is connected to the sliding frame 2. A transverse support 54 with an internal thread is arranged on the sliding frame 2, and a mounting seat 53 is arranged on the cross beam 1. The sliding drive mechanism 3 adopts a power-driven screw mechanism, the power-driven end of the sliding drive mechanism 3 is fixed on the mounting seat 53, and the screw end of the sliding drive mechanism 3 is connected to the transverse support 54, and the sliding frame 2 is driven to move transversely by the rotation of the power-driven screw.

[0098] As attached Figure 3 and attached Figure 4As shown, a wedge-shaped locking mechanism 18 is further provided in the sliding frame 2. The wedge-shaped locking mechanism 18 is located between the crossbeam 1 and the sliding frame 2 and includes two wedge-shaped sliders in contact with each other. The locking mechanism 52 passes through the sliding frame 2 and presses the two wedge-shaped sliders to lock the position of the sliding frame 2. When the lateral span of the two legs 5 is adjusted to the right position, the position of the sliding frame 2 is locked by the wedge-shaped locking mechanism 18.

[0099] The leg 5 further includes a threaded barrel 6, a screw 9, a support 10 and a leg sleeve 11. The threaded barrel 6 is connected to the bottom of the sliding frame 2, the leg sleeve 11 is sleeved on the bottom of the threaded barrel 6, and the support 10 is arranged below the leg sleeve 11. The screw 9 is arranged in the leg sleeve 11, the upper end of the screw 9 is connected to the threaded barrel 6 through a thread, and the lower end is connected to the lifting drive mechanism 7. The lifting drive mechanism 7 is arranged in the support 10, and the screw 9 is driven by the lifting drive mechanism 7 to rotate so that the threaded barrel 6 moves up and down, thereby realizing the telescopic function of the leg 5.

[0100] The lower part of the support leg 5 is further provided with an adjustable support foot 8, and the support leg 5 and the gantry crane 100 can be leveled by the adjustable support foot 8. The cross beam 1 is provided with a tilt sensor 17. After the gantry crane 100 is unloaded from the first transport flat car 41, the tilt state data of the gantry crane 100 is obtained by the tilt sensor 17, and the cross beam 1 is leveled by fine-tuning the adjustable support foot 8.

[0101] The gantry crane 100 is mainly composed of an I-shaped crossbeam 1, a sliding and retractable leg 5, a lifting mechanism (hoist) 4, a sliding mechanism (including a sliding frame 2 and a sliding drive mechanism 3), a wedge-shaped locking mechanism 18, and a power supply cabinet 12. The leg 5 is slidably sleeved on the I-shaped crossbeam 1 through the upper sliding frame 2, and a threaded plate (transverse support 54) is provided on the sliding frame 2 to connect with the threaded rod of the sliding drive mechanism 3. The sliding drive mechanism 3 is driven by a motor or an electric motor to rotate the lead screw to achieve sliding, and is fixed on the crossbeam 2 through a mounting seat 53. A wedge-shaped locking mechanism 18 is arranged in the sliding frame 3, and when the lateral span is adjusted to the right position, the locking can be completed through a locking mechanism 52 (a structural form in which a motor or an electric motor drives the lead screw). A threaded barrel 6 is welded below the sliding frame 2, and the threaded barrel 6 is connected to the screw 9 by a thread. The lower end of the screw 9 is a lifting drive mechanism 7, which is driven by a motor or an electric motor and is fixed to the bracket of the leg through a bearing 13. When the driving screw rod rotates, the threaded tube can move up and down to realize the telescopic function of the legs. The bottom end of the bracket is equipped with a threaded adjustable foot, which is connected to the bracket through a pin shaft to cope with uneven ground environments.

[0102] As attached Figure 7 and attached Figure 8As shown in FIG. 1 , the rail line gantry lifting device also includes a lifting tool 33, which further includes a load beam 36, a mounting frame 37, a lifting ring 38 and a lifting claw 39. The lifting mechanism 4 includes a hook 55 that can be lifted and moved vertically, and the lifting ring 38 is arranged on the upper part of the load beam 36, and the hook 55 is connected to the lifting ring 38. The mounting frame 37 is arranged on the lower part of the load beam 36, and the lifting claw 39 is arranged along the line direction (such as the attached Figure 7 and attached Figure 8 The upper end of the lifting tool 33 has a lifting ring 38 connected to the hooks 55 of multiple gantry cranes 100 through a sling or a hook, and the lower end is connected to the turnout 34 through multiple lifting points, as shown in the attached figure. Figure 6 The mounting frame 37 has a longitudinal movable function, and can move forward and backward relative to the load beam 36 along the line direction after the turnout 34 is lifted, so as to solve the problem of accurate positioning of the turnout 34.

[0103] When the gantry crane 100 is performing a lifting operation, the turnout 34 is lifted by the lifting claw 39. After the turnout 34 is lifted, it is moved forward and backward along the line direction on the load beam 36 by the mounting frame 37, so that the turnout 34 is lifted to a specified longitudinal position. The mounting frame 37 is movably connected to the load beam 36, and sprockets 50 are provided at both ends of the load beam 36 along the line direction. The two sprockets 50 are connected by a chain 51. The chain 51 is connected to the mounting frame 37, and one of the sprockets 50 is driven to rotate by the longitudinal movement mechanism 48. The rotation of the sprocket 50 drives the chain 51 to move forward and backward along the line direction, thereby realizing the longitudinal movement of the mounting frame 37 (as shown in the attached figure). Figure 7 and attached Figure 8 The switch 34 is moved in the direction indicated by L in the figure to solve the problem of accurate positioning of the switch 34.

[0104] The rail line gantry hoisting device described in Example 1 has legs 5 that are vertically retractable and can slide on the crossbeam 1 to adjust the span and height of the gantry crane 100 to adapt to different site conditions and the replacement of turnouts 34 of different sizes. The legs 5 are rotatable and leveling mechanisms, and are implemented by means of oil cylinders or electric lead screws. The lifting mechanism 4 can be a hoist or other lifting tools.

[0105] Example 2

[0106] In order to solve the many problems of replacing turnout components on existing railway lines, especially high-speed ballastless tracks, Example 2 provides a group lifting system composed of multiple intelligent gantry cranes that are simple in structure, low in cost, and easy and quick to operate. The system can be transported to the railway site by rail flat cars, and the heavy components on the railway line can be lifted steadily by the group lifting method. After multiple gantry cranes 100 are unloaded from the rail flat cars and deployed according to the distance requirements, the synchronization of the lifting of multiple gantry cranes 100 and the stability during the lifting process are solved by group lifting control during the lifting of line components. The rail line gantry group lifting system uses the skylight time to transport the gantry crane 100, the lifting tool 33 and the new turnout 44 to the operation site by using a transport flat car, and then the lifting and replacement of the new and old turnouts are carried out after they are placed in appropriate positions, and then the old turnout 56 is transported away from the operation site. When lifting oversized objects of turnout components, multiple gantry cranes are used for lifting, and the purpose of stable operation is achieved through reasonable control of the group lifting operation of the intelligent gantry cranes.

[0107] As attached Fig.16 and attached Fig.17 As shown, an embodiment of a rail line gantry crane system based on the method of the present invention specifically includes: a plurality of gantry cranes 100 as described in Example 1 are arranged on the railway line at intervals along the line direction in an operating state, and the gantry cranes 100 are straddled on the roadbed 47 on both sides of the railway line.

[0108] The gantry crane 100 is arranged on the first transport flat car 41 in the transport state, and the system further includes:

[0109] A rail car 40, a first transport flat car 41 and a second transport flat car 42;

[0110] A rotating mounting seat 200 disposed on the first transport flat car 41 in the transport state and used to fix the gantry crane 100;

[0111] The lifting device 33 and the switch 34 are arranged on the second transport flat car 42 in the transport state.

[0112] In the working state, the upper end of the lifting tool 33 is connected to the hooks 55 of the plurality of gantry cranes 100 through the lifting ring 38, and the lower end of the lifting tool 33 is connected to the turnout 34 through the plurality of lifting claws 39. During operation, after the plurality of gantry cranes 100 are deployed to a suitable position, the turnout 34 is lifted by the lifting tool 33. After the turnout 34 is lifted, the mounting frame 37 is driven by the traction mechanism 40 to move forward and backward along the line direction on the load beam 36, so as to lift the turnout 34 to a designated longitudinal position.

[0113] The transportation is carried out by temporary haulage of a rail car 40, a modified flat car (i.e., the first transport flat car 41) transports a plurality of gantry cranes 100, and two ordinary flat cars (i.e., the second transport flat cars 42) transport the new and old turnouts, as shown in the attached figure. Fig.15 and attached Fig.16 As shown. The rail car 40, the first transport flat car 41 or the second transport flat car 42 is further provided with a power device 43 for providing power to the rotating mounting seat 200. The power device 43 can be of different types: battery driven or generator driven, and the actuator can be electrically driven or hydraulically driven. Each rotating mounting seat 200 can be driven individually or in a centralized and unified power drive mode.

[0114] In the operation state, several gantry cranes 100 are arranged along the line direction (such as the attached Fig.15 and attached Fig.16 The upper part of the lifting tool 33 is connected to the hooks 55 of the gantry cranes 100 through the lifting ring 38, and the lower part of the lifting tool 33 is connected to the turnout 34 through the plurality of lifting claws 39. After the turnout 34 is lifted, the mounting frame 37 is driven by the longitudinal movement mechanism 48 to move forward and backward relative to the load beam 36 along the line direction to achieve accurate longitudinal positioning of the turnout 34.

[0115] The turnout replacement system described in Example 2 adopts a group lifting method of multiple (generally 3 to 5) gantry cranes 100, and transports 3-5 gantry cranes 100, lifting tools 33 and new turnouts 44 to the work site through rail flat cars (including rail cars 40, first transport flat cars 41 and second transport flat cars 42), and multiple gantry cranes 100 get off the car in turn to the designated positions according to the position and sequence. Then, the new turnout 44 is unloaded and placed under the gantry crane 100 through group lifting and special lifting tools 33. Then, the old turnout 56 is disassembled, and the new and old turnouts are replaced by the gantry crane 100. After the line is restored, the old turnout 56 is lifted and transported to the second transport flat car 42, and multiple gantry cranes 100 are boarded in turn and fixed and driven away.

[0116] Example 3

[0117] As attached Fig.10 To Attachment Fig.14 As shown, an embodiment of a rotating fixing device 200 applied to the track plate replacement system described in Example 2 specifically includes:

[0118] A fixed mounting seat 21 fixed on the first transport flat car 41;

[0119] A lifting seat 19 for fixing and installing the gantry crane 100, the lifting seat 19 can be lifted and lowered relative to the fixed mounting seat 21, so as to enable the gantry crane 100 to move up and down the first transport flat car 41;

[0120] The slewing bearing 20 is disposed between the fixed mounting seat 21 and the lifting seat 19 . The lifting seat 19 can perform horizontal rotational motion relative to the fixed mounting seat 21 through the slewing bearing 20 to adjust the installation direction of the gantry crane 100 .

[0121] The rotating fixing device 200 described in Example 2 can fix multiple gantry cranes 100 on a rail flat car. While ensuring that the vehicle transportation limit is not exceeded, the multiple gantry cranes 100 are transported by the rail flat car and deployed to the work site for lifting operations and then recovered.

[0122] When in the transport state, the gantry crane 100 is longitudinally fixed on the lifting seat 19. When in the deployment state, the gantry crane 100 is adjusted to a horizontal arrangement by rotating the slewing bearing 20.

[0123] The rotating fixing device 200 further includes a locking seat 22 disposed on the lifting seat 19, and a plurality of grooves 28 for fixing the gantry crane 100 are disposed on the locking seat 22. The number of the grooves 28 is determined according to the size of the gantry crane 100, and is generally 2 to 3 pairs. The rotating fixing device 200 further includes a guide column seat 23 disposed on the slewing bearing 20, and the inner ring of the slewing bearing 20 is fixedly mounted on the guide column seat 23, and the outer ring of the slewing bearing 20 is fixedly mounted on the fixed mounting seat 21. A guide column 25 is mounted on the guide column seat 23, and the guide column 25 passes through a through hole provided on the lifting seat 19. When the lifting mechanism 24 performs telescopic movement, the guide column 25 realizes the lifting and lowering guide of the lifting seat 19. The rotating fixing device 200 further includes a rotating driving mechanism 32, one end of which is fixedly mounted on the fixed mounting seat 21, and the other end of which drives the slewing bearing 20 with a gear on the outer ring to realize the rotating function through a gear rotation.

[0124] The rotating fixing device 200 also includes a lifting mechanism 24, one end of which is fixedly mounted on the guide column seat 23, and the other end is connected to the lifting seat 19. The lifting function of the gantry crane 100 is realized by the telescopic movement of the lifting mechanism 24. A locking mechanism 26 is arranged on the side of the locking seat 22 and close to each pair of grooves 28. When the cross beam 1 of the gantry crane 100 is fixed in the groove 28, the cross beam 1 is pressed by the locking mechanism 26 to lock the gantry crane 100 in the groove 28. The locking mechanism 26 can be directly pressed by a cylinder, or by a lever structure. The two sets of locking mechanisms 26 press the cross beam 1 of the gantry crane 100 in the groove 28 through the cylinder, thereby fixing the gantry crane 100. Among them, the middle part of the lifting seat 19 and the locking seat 22 is hollow to accommodate the lifting mechanism 4 of the gantry crane 100.

[0125] Two sliding mechanisms 27 are arranged opposite to each other on the locking seat 22, and a stopper 29 is arranged at a position opposite to the sliding mechanism 27 on the lifting seat 19, and the movable end of the sliding mechanism 27 contacts the stopper 29. When the movable end of one sliding mechanism 27 is stretched, the movable end of the other sliding mechanism 27 is contracted, thereby driving the locking seat 22 to slide relative to the lifting seat 19 along the movement direction of the sliding mechanism 27. Two guide protrusions 30 are arranged opposite to each other along the movement direction of the sliding mechanism 27 on the lifting seat 19, and two guide grooves 31 corresponding to the guide protrusions 30 are arranged on the locking seat 22. The guide grooves 31 are slidably sleeved on the guide protrusions 30 to guide the relative sliding between the locking seat 22 and the lifting seat 19.

[0126] The base of the fixed mounting seat 21 is connected to the bottom plate 56 of the first transport flat car 41 by bolts, and the slewing bearing 20 with a gear on the outer ring is installed on the top by bolts. The gear driven by the rotation installed on the fixed mounting seat 21 drives the slewing bearing 20 to realize the rotation function. The guide column seat 23 is installed on the upper part of the inner ring of the slewing bearing 20 by bolts, and two guide columns 25 are installed on the upper part of the guide column seat 23 by interference fit. The lifting mechanism 24 (which can be specifically a lifting cylinder, a gas cylinder or an electric cylinder) is fixed on the guide column seat 23, and the piston rod of the lifting mechanism 24 is connected to the lifting seat 19, and the lifting seat 19 is sleeved on the two guide columns 25. The lifting mechanism 24 can realize the lifting function by telescoping. Two guide protrusions 30 are provided on the lifting seat 19, which function as guide rails. Two guide grooves 31 are provided on the locking seat 22, and the guide grooves 31 are slidably sleeved on the two guide protrusions 30. Two sliding mechanisms 27 (which can be specifically lifting cylinders, air cylinders or electric cylinders) are installed on the locking seat 22. The piston rod of the sliding mechanism 27 is connected to the stopper 29 on the lifting seat 19. The two sliding mechanisms 27 extend and contract respectively, so that the entire locking seat 22 can slide on the lifting seat 19.

[0127] The rotating fixing device 200 is composed of a locking seat 22 with a groove 28, a lifting seat 19, a slewing bearing 20 and a fixed mounting seat 21. The lifting and fixing mounting seat 21 is fixed to the bottom plate 60 of the first transport flat car 41 and connected by bolts. The rotating fixing device 200 is powered by a battery, a generator or a flat car. During transportation, the gantry crane 100 is locked and pressed in the groove 28 by the locking mechanism 26. The slewing bearing 20 is driven to rotate by a motor or an electric motor, and the lifting seat 19 can use a cylinder to complete the lifting action. During operation, the rotating fixing device 200 can lift or lower the gantry crane 100 through the lifting seat 19. After driving the rotation, the gantry crane 100 can achieve horizontal rotation at different angles. After reaching the specified position, the locking mechanism 26 is released, and the gantry crane 100 can be separated from the groove 28. The position where the gantry crane 100 is installed forward on the first transport flat car 41 is used as the starting point of the rotation of the slewing bearing 20, and when it rotates 90° clockwise, it is used as the end point. Position sensors are provided at the starting point and the end point, and the movement stops and is locked after the rotation is in place.

[0128] When in the transport state, the gantry crane 100 is longitudinally locked and installed in the groove 28 of the fixed mounting seat 21. Fig.15 When arriving at the work site, the gantry crane 100 is first driven to rise to the highest point by the lifting mechanism 24, and then the gantry crane 100 is driven to rotate to the horizontal direction by the rotary drive mechanism 32, and the lifting mechanism 24 then drives the gantry crane 100 down to the work surface. When the legs 5 of the gantry crane 100 are lowered to the specified position, the locking mechanism 26 is released, and the gantry crane 100 is released from the groove 28 to realize the operation deployment of the gantry crane 100.

[0129] Example 4

[0130] The rail line gantry group crane operation method given in Example 4 transports several gantry cranes 100 and other materials such as lifting tools 33 to the operation site through rail flat cars according to the needs of the lifting object. Multiple gantry cranes 100 are automatically unloaded and deployed in place according to the position and sequence, and the rail flat cars drive away, and then the lifting operation can be carried out. Through the comprehensive control of the group cranes, after the lifting operation is completed, the flat car enters, and the gantry crane 100 is recovered and loaded onto the car, fixed on the flat car and drives away. In this embodiment, other auxiliary process flows such as gantry crane support point confirmation, support point leveling, rail fastener disassembly, and rail cutting, welding, grinding and adjustment are omitted. The following specifically takes the switch core replacement process as an example to explain the rail line gantry group crane operation method of the present invention in detail.

[0131] Since the distance between each gantry crane 100 is relatively long, a wireless remote control device 57 is used to coordinate and control the movements of each gantry crane 100 through a centralized wireless remote control method. Each gantry crane 100 is provided with a power supply cabinet 12 containing a control system, which has signal receiving and signal feedback functions. Fig.15 As shown, the operation interface of the wireless remote control device 57 includes a gantry crane operation area 58 and a comprehensive operation operation area 59, and has signal receiving and transmitting functions, and is equipped with various action buttons of the gantry crane 100. The synchronous control of the group cranes mainly includes two aspects: synchronous horizontal lifting and synchronous vertical lifting. The vertical synchronous equidistant lifting and equidistant horizontal movement of multiple gantry cranes 100 rely on the sensors installed on the gantry cranes 100, and the rotating mounting seat 200 will place the gantry cranes 100 longitudinally so that the parallelism between the gantry cranes 100 basically meets the requirements.

[0132] Attached Fig.18 To Attachment Fig.39 As shown, an embodiment of a rail line gantry group crane operation method of the present invention specifically includes the following steps:

[0133] S100) Before the operation, a hoisting plan is prepared according to the hoisting object and environmental conditions, including how many gantry cranes 100 are needed, and the position where each gantry crane 100 is placed is marked; the rotation starting point sensor position of each rotating mounting seat 200 that fixes the gantry crane 100 is first adjusted to make the crossbeam 1 of each gantry crane 100 parallel; the rotation end point sensor position of each rotating mounting seat 200 rotates 90° is adjusted, and the crossbeam 1 is parallel after each gantry crane 100 rotates 90°;

[0134] S101) A plurality of gantry cranes 100 are arranged in a longitudinal direction (such as the attached Fig.18 and attached Fig.19 The new turnout 44 and the lifting tool 33 are placed on the second transport flat car 42 and transported to the designated location of the work site by the rail car 40, as shown in the attached figure. Fig.18 and attached Fig.19 As shown;

[0135] S102) The first transport flat car 41 is towed by the rail car 40, and the gantry crane 100 is deployed to the designated positions of the line in sequence by using the rotating mounting seat 200;

[0136] Step S102) further comprises:

[0137] S1021) The rail vehicle 40 pulls the first transport flat car 41 to move to the placement position of the first gantry crane 100, and the rotating mounting seat 200 rotates 90° until the gantry crane 100 is perpendicular to the line direction. At this time, the gantry crane 100 is horizontally (as shown in the attached figure) through the rotating mounting seat 200. Fig.21 W in the middle) is fixed on the first transport flat car 41, as shown in the attached Fig. 20 and attached Fig.21 As shown;

[0138] S1022) The legs 5 of the gantry crane 100 move to a specified position along the crossbeam 1, and the rotating mounting seat 200 drives the gantry crane 100 to descend; the legs 5 extend downward to close to the ground, the rotating mounting seat 200 releases the lock on the gantry crane 100, and the legs 5 continue to extend and level, completing the deployment of a gantry crane 100;

[0139] S1023) The rail car 40 pulls the first transport flat car 41 to move sequentially, and step S1022) is repeated until all the gantry cranes 100 are deployed to the designated position, as shown in the attached figure. Fig. 22 and attached Fig.23 As shown;

[0140] S103) The rail vehicle 40 pulls the second transport flat car 42 to move to the designated position, and the lifting tool 33 is connected to the lifting mechanisms 4 of several gantry cranes 100 to realize group lifting operation. The lifting tool 33 moves and lifts the new turnout 44, as shown in the attached figure. Fig.24 and attached Fig.25 As shown;

[0141] S104) The rail vehicle 40 pulls the first transport flat car 41 and the second transport flat car 42 away from the turnout replacement operation area, and a plurality of gantry cranes 100 perform group lifting to move the new turnout 44 horizontally to the side close to the support leg 5 and place it, as shown in the attached figure. Fig.26 and attached Fig. 27 shown.

[0142] After step S104), the following process is also included:

[0143] S105) cutting the rail 45, removing the fasteners, and removing the old turnout 56;

[0144] S106) Move the lifting tool 33 to the old turnout 56 by the gantry crane 100 and hang it to lift it, and place the old turnout 56 on the support leg 5 on the other side of the gantry crane 100, as shown in the attached figure. Fig.29 As shown;

[0145] S107) Move the lifting tool 33 to the new turnout 44 by the gantry crane 100 and hang it to lift it, and place the new turnout 44 at the position of the old turnout 56, as shown in the figure. Fig.30 and attached Fig.31 If there is a deviation, the position can be accurately adjusted by moving the mounting frame 37 of the lifting tool 33. Then the new turnout 44 is welded to the rail 45, and the fasteners are installed, and the line is restored.

[0146] After step S109), the following process is also included:

[0147] S108) moving the lifting tool 33 to the old turnout 56 by the gantry crane 100 and hanging and lifting it;

[0148] S109) The rail vehicle 40 pulls the second transport flat car 42 in;

[0149] S110) The old turnout 56 is moved and placed at a designated position of the second transport flat car 42 by means of the lifting tool 33, as shown in the attached Fig.32 and attached Fig.33 shown.

[0150] After step S112), the following process is also included:

[0151] S111) The rail car 40 pulls the first transport flat car 41 to move to the bottom of the gantry crane 100 at the final position, and the crossbeam 1 of the gantry crane 100 is aligned with the groove 28 of the rotating mounting seat 200, as shown in the attached Fig.34 and attached Fig.35 As shown;

[0152] S112) The legs 5 of the gantry crane 100 are retracted until the crossbeam 1 enters the groove 28 of the rotating mounting seat 200 and is fixed;

[0153] S113) The legs 5 of the gantry crane 100 continue to retract to the starting position, and the legs 5 move to the starting position along the crossbeam 1. At this time, the gantry crane 100 is horizontally (as shown in the attached figure) by rotating the mounting seat 200. Fig.35 The first transport flat car 41 is fixed to the first transport flat car 41;

[0154] S114) Repeat steps S111) to S113) to complete the recovery process of the remaining gantry cranes 100, as shown in the attached Fig.36 and attached Fig.37 As shown;

[0155] S115) The rotating mounting seat 200 rotates until the gantry crane 100 is in the longitudinal direction (such as the attached Fig.38 and attached Fig.39 The railcar 40 pulls the first transport flatcar 41 and the second transport flatcar 42 away, as shown in the attached figure. Fig.38 and attached Fig.39 shown.

[0156] During the hoisting operation of the new turnout 44 or the old turnout 56, the gantry crane 100 is hoisted to perform synchronous control on the lateral and vertical movements of the new turnout 44.

[0157] Step S102) further includes:

[0158] After the first gantry crane 100 is deployed in place, the subsequently deployed gantry crane 100 obtains the distance between itself and the adjacent gantry crane 100 through the second distance sensor 15 arranged on the two sliding frames 2 or the legs 5, and adjusts the rotation angle of the rotating mounting seat 200 to meet the parallelism requirement between the beams 1 of the two gantry cranes 100.

[0159] A first distance sensor 14 is provided on the lifting mechanism 4. When the gantry crane 100 performs lifting operation, the first distance sensor 14 obtains the distance between the lifting mechanism 4 and the support leg 5. The distance difference between the support leg 5 on the same side of each gantry crane 100 and the lifting mechanism 4 is controlled to meet the set requirements, so as to realize the lateral position alignment when multiple gantry cranes 100 perform synchronous lifting of the turnout 34.

[0160] An adjustable foot 8 is provided at the lower part of the leg 5, and the adjustable foot 8 is used to realize the leveling function of the leg 5 and the gantry crane 100. A tilt sensor 17 is provided on the crossbeam 1, and the tilt state data of the gantry crane 100 is obtained through the tilt sensor 17 during the deployment process of the gantry crane 100, and the crossbeam 1 is leveled by fine-tuning the adjustable foot 8.

[0161] A force sensor 16 is provided on the lifting mechanism 4. When the gantry crane 100 starts to lift the new turnout 44 or the old turnout 56, the lifting mechanism 4 of each gantry crane 100 uses the collected value of the force sensor 16 at this time as the reference value. If the change value exceeds the standard value during the subsequent lifting process, the motor speed of the lifting mechanism 4 is adjusted so that the collected value of the force sensor 16 of the lifting mechanism 4 is maintained substantially equivalent to the reference value during the lifting process, so as to achieve vertical stability control when multiple gantry cranes 100 lift the turnout 34 synchronously.

[0162] The lifting tool 33 includes a load-bearing beam 36, a mounting frame 37, a lifting ring 38 and a lifting claw 39. The lifting mechanism 4 includes a lifting hook 55 that can be lifted and lowered in the vertical direction. The lifting ring 38 is arranged on the upper part of the load-bearing beam 36, and the lifting hook 55 is connected to the lifting ring 38. The mounting frame 37 is arranged on the lower part of the load-bearing beam 36, and the lifting claw 39 is arranged on the left and right sides of the mounting frame 37 along the line direction. The mounting frame 37 is movably connected to the load-bearing beam 36, and sprockets 50 are arranged at both ends of the load-bearing beam 36 along the line direction, and the two sprockets 50 are connected by a chain 51. The chain 51 is connected to the mounting frame 37, and one of the sprockets 50 is driven to rotate through the longitudinal movement mechanism 48. The rotation of the sprocket 50 drives the chain 51 to move along the line direction, thereby realizing the longitudinal movement of the mounting frame 37.

[0163] In the description of this application, it should be noted that when an element is referred to as being "fixed on" or "set on" another element, it can be directly on the other element or indirectly set 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 indirectly connected to the other element.

[0164] It should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship are based on the orientation or position relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present application.

[0165] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of this application, "multiple" and "several" mean two or more, unless otherwise clearly and specifically defined.

[0166] It should be noted that the structures, proportions, sizes, etc. illustrated in the drawings of this specification are only used to match the contents disclosed in the specification for people familiar with this technology to understand and read, and are not used to limit the conditions under which this application can be implemented. Therefore, they have no substantive technical significance. Any structural modification, change in proportional relationship or adjustment of size should still fall within the scope of the technical content disclosed in this application without affecting the effects and purposes that can be achieved by this application.

[0167] By implementing the technical solution of the rail line gantry group crane operation method described in the specific embodiment of the present invention, the following technical effects can be produced:

[0168] (1) The rail line gantry crane group operation method described in the specific embodiment of the present invention has the functions of lateral movement, lifting and leveling of the legs. The lateral span spacing of the legs, the height from the ground, the lifting position and the height can all be precisely adjusted to meet the functions required by different line ground conditions. The gantry crane is height-adjustable, and there is no risk of touching the contact network during the lifting process, which is convenient for consistency control operation and maintenance.

[0169] (2) The rail line gantry crane operation method described in the specific embodiment of the present invention is suitable for replacing a whole set of turnouts as well as replacing a single point rail, turnout core, etc., and can realize the transportation, placement, position adjustment and replacement of various line components of different lengths through the combination of multiple gantry cranes; and the replacement of line components will not occupy the adjacent line space, the operation is flexible, there is no operational safety risk, and it can well meet the operational requirements under complex line conditions;

[0170] (3) The rail line gantry crane group operation method described in the specific embodiment of the present invention has a simple structure, high reliability, easy maintenance and repair, low manufacturing cost, high operating efficiency, small space occupation, light weight, placement and recovery can be achieved through a lifting platform, and the transportation, placement, operation and recovery of the gantry crane can all be wirelessly controlled, with a high degree of integration and intelligence, and further improved operating efficiency;

[0171] (4) In the rail line gantry crane group crane operation method described in the specific embodiment of the present invention, the inclination of the gantry crane's crossbeam is fed back through the inclination sensor, and the crossbeam inclination is adjusted to meet the requirement by fine-tuning the height of the legs; by installing distance measuring sensors on the two legs or sliding frames of the gantry crane, the parallelism requirement of the front and rear gantry cranes can be guaranteed; the lifting mechanism is provided with a lateral position sensor so that each hook is in the same lateral position; and a force sensor is provided on the rotating shaft of the lifting mechanism to meet the stability requirement of synchronous lifting.

[0172] The various embodiments in this specification are described in a progressive manner, and each embodiment focuses on the differences from other embodiments. The same or similar parts between the various embodiments can be referenced to each other.

[0173] The above is only a preferred embodiment of the present invention and does not limit the present invention in any form. Although the present invention has been disclosed as above in the preferred embodiment, it is not used to limit the present invention. Any technician familiar with the art can make many possible changes and modifications to the technical solution of the present invention by using the methods and technical contents disclosed above without departing from the spirit and technical solution of the present invention, or modify it into an equivalent embodiment of equivalent changes. Therefore, any simple modification, equivalent replacement, equivalent change and modification made to the above embodiments according to the technical essence of the present invention without departing from the content of the technical solution of the present invention still falls within the scope of protection of the technical solution of the present invention.

Claims

1. A rail line gantry group crane operation method, characterized in that: The following steps are involved: S101) a plurality of gantry cranes (100) are longitudinally fixed on a first transport flat car (41) via a rotating mounting seat (200), a new turnout (44) and a lifting tool (33) are placed on a second transport flat car (42), and transported to a designated location at a work site via a rail car (40); S102) using the rail vehicle (40) to pull the first transport flat car (41), and using the rotating mounting seat (200) to sequentially deploy the gantry crane (100) to designated positions of the line; S103) the rail vehicle (40) pulls the second transport flat car (42) to move to a designated position, and the lifting tool (33) is connected to the lifting mechanisms (4) of several gantry cranes (100) to realize group lifting operation, and the lifting tool (33) moves and lifts the new turnout (44); S104) the rail vehicle (40) pulls the first transport flat car (41) and the second transport flat car (42) away, and a plurality of gantry cranes (100) are used to perform group lifting to move the new turnout (44) laterally to the side close to the support leg (5) and place it; The step S102) further comprises: S1021) the rail vehicle (40) pulls the first transport flat car (41) to move to the placement position of the first gantry crane (100), and the rotating mounting seat (200) rotates 90° until the gantry crane (100) is perpendicular to the line direction; S1022) The legs (5) of the gantry crane (100) move to a specified position along the crossbeam (1), and the rotating mounting seat (200) drives the gantry crane (100) to descend; the legs (5) extend downward to close to the ground, and the locking of the gantry crane (100) by the rotating mounting seat (200) is released, and the legs (5) continue to extend and are leveled, thereby completing the deployment of a gantry crane (100); S1023) The rail vehicle (40) pulls the first transport flat car (41) to move sequentially, and step S1022) is repeated until all the gantry cranes (100) are deployed to the designated positions.

2. The rail line gantry group crane operation method according to claim 1 is characterized in that: After step S104) The process includes: S105) cutting the rails (45), removing the fasteners, and removing the old turnout (56); S106) using the gantry crane (100) to move the lifting tool (33) to the old turnout (56) and to hang and lift it, and to place the old turnout (56) on the support leg (5) on the other side of the gantry crane (100); S107) The lifting tool (33) is moved to the new turnout (44) by the gantry crane (100) and is hung and lifted, and the new turnout (44) is placed at the position of the old turnout (56); the new turnout (44) is welded to the rail (45), and fasteners are installed, and the line is restored.

3. The rail line gantry group crane operation method according to claim 2 is characterized in that: After step S107) The process includes: S108) moving the lifting tool (33) to the old turnout (56) by means of the gantry crane (100) and hanging and lifting it; S109) the rail vehicle (40) pulls the second transport flat car (42) in; S110) The old turnout (56) is moved by the lifting tool (33) and placed at a designated position of the second transport flat car (42).

4. The rail line gantry group crane operation method according to claim 3 is characterized in that: After step S110) The process includes: S111) the rail vehicle (40) pulls the first transport flat car (41) to move to the bottom of the gantry crane (100) at the final position, and the crossbeam (1) of the gantry crane (100) is aligned with the groove (28) of the rotating mounting seat (200); S112) the legs (5) of the gantry crane (100) are retracted until the crossbeam (1) enters the groove (28) of the rotating mounting seat (200) and is fixed; S113) the supporting legs (5) of the gantry crane (100) continue to retract to the starting position, and the supporting legs (5) move along the crossbeam (1) to the starting position; S114) repeating steps S111) to S113) to complete the recovery process of the remaining gantry cranes (100); S115) The rotating mounting seat (200) is rotated to the gantry crane (100) to be longitudinally fixed, and the rail vehicle (40) pulls the first transport flat car (41) and the second transport flat car (42) away.

5. The rail line gantry group crane operation method according to claim 1, 2, 3 or 4, characterized in that: During the lifting operation of the new turnout (44) or the old turnout (56), the gantry crane (100) is synchronously controlled to lift the new turnout (44) in lateral and vertical directions.

6. The rail line gantry group crane operation method according to claim 5, characterized in that: The step S102) further comprises: After the first gantry crane (100) is deployed in place, the subsequently deployed gantry crane (100) obtains the distance between itself and the adjacently arranged gantry crane (100) through a second distance sensor (15) arranged on two sliding frames (2) or legs (5), and adjusts the rotation angle of the rotating mounting seat (200) to meet the parallelism requirement between the crossbeams (1) of the two gantry cranes (100).

7. The rail line gantry group crane operation method according to claim 6, characterized in that: A first distance sensor (14) is arranged on the lifting mechanism (4). When the gantry crane (100) performs a lifting operation, the first distance sensor (14) obtains the distance between the lifting mechanism (4) and the support leg (5). By controlling the distance difference between the support leg (5) on the same side of each gantry crane (100) and the lifting mechanism (4) to meet the set requirements, the lateral position alignment of multiple gantry cranes (100) when synchronously lifting the turnout (34) is achieved.

8. The rail line gantry group crane operation method according to claim 6 or 7, characterized in that: An adjustable support foot (8) is arranged at the lower part of the support leg (5), and the leveling function of the support leg (5) and the gantry crane (100) is realized by the adjustable support foot (8); an inclination sensor (17) is arranged on the crossbeam (1), and the inclination state data of the gantry crane (100) is obtained by the inclination sensor (17) during the deployment process of the gantry crane (100), and the leveling of the crossbeam (1) is realized by fine-tuning the adjustable support foot (8).

9. The rail line gantry group crane operation method according to claim 8, characterized in that: A force sensor (16) is arranged on the lifting mechanism (4). When the gantry crane (100) starts to lift the new turnout (44) or the old turnout (56), the lifting mechanism (4) of each gantry crane (100) uses the collected value of the force sensor (16) at this time as a reference value. If the change value exceeds the standard value during the subsequent lifting process, the motor speed of the lifting mechanism (4) is adjusted so that the collected value of the force sensor (16) of the lifting mechanism (4) is maintained substantially equal to the reference value during the lifting process, so as to realize vertical stability control when multiple gantry cranes (100) lift the turnout (34) synchronously.

10. The rail line gantry group crane operation method according to claim 1, 2, 3, 4, 6, 7 or 9, characterized in that: The lifting tool (33) includes a load-bearing beam (36), a mounting frame (37), a lifting ring (38) and a lifting claw (39); the lifting mechanism (4) includes a lifting hook (55) capable of being lifted and lowered in the vertical direction, the lifting ring (38) being arranged on the upper part of the load-bearing beam (36), and the lifting hook (55) being connected to the lifting ring (38); the mounting frame (37) being arranged on the lower part of the load-bearing beam (36), and the lifting claw (39) being arranged on the left and right sides of the mounting frame (37) along the line direction.

11. The rail line gantry group crane operation method according to claim 10, characterized in that: The mounting frame (37) is movably connected to the load-bearing beam (36); sprockets (50) are provided at both ends of the load-bearing beam (36) along the line direction; the two sprockets (50) are connected by a chain (51); the chain (51) is connected to the mounting frame (37); one of the sprockets (50) is driven to rotate by a longitudinal movement mechanism (48); the rotation of the sprocket (50) drives the chain (51) to move along the line direction, thereby realizing the longitudinal movement of the mounting frame (37).

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