Gantry type rail-mounted gantry crane moving method

Abstract

The invention provides a gantry type rail-mounted gantry crane moving method. The gantry type rail-mounted gantry crane moving method comprises the steps that S1, a reinforcing tool is used for reinforcing the whole gantry type rail-mounted gantry crane; s2, a plurality of parking positions and a plurality of preset positions corresponding to the gantry type rail-mounted cranes are arranged for each truck-mounted crane along a transfer path based on the transfer path of the gantry type rail-mounted cranes and the rotation distance of a cargo boom of the truck-mounted cranes; s3, each truck crane is controlled to synchronously run to the corresponding parking position along the transfer path, after the truck crane arrives at the corresponding parking position every time, cargo booms of the truck cranes are controlled to lift the gantry type rail crane in a linkage mode, the gantry type rail crane is lifted from the previous preset position to the next preset position by rotating the cargo booms, and then the truck cranes are transferred to the next preset position. And the gantry type rail is hoisted to the target position. According to the moving method disclosed by the invention, the overall lifting and transferring of the gantry rail-mounted gantry crane can be realized.

Description

Technical Field

[0001] The present invention relates to the technical field of heavy machinery, and particularly relates to a method for relocating a gantry crane. Background Art

[0002] When relocating large equipment such as gantry cranes, it is generally disassembled and then transported to the target site for assembly. However, this relocation method is costly and time-consuming. In some existing other solutions, multiple modular vehicles are also used for transporting the whole machine. However, for docks with height differences in the site, once the slope of the running path of the modular vehicle exceeds the maximum safe slope, the modular vehicle cannot be used for relocating the whole machine at this time. Summary of the Invention

[0003] In view of this, the present invention provides a method for relocating a gantry crane, which can realize the operation of the whole machine and can overcome the height difference of the site.

[0004] To solve at least one of the above technical problems, the present invention adopts the following technical solutions:

[0005] A method for relocating a gantry crane according to an embodiment of the present invention includes:

[0006] Step S1, using a strengthening tooling to reinforce the whole machine of the gantry crane;

[0007] Step S2, respectively setting a plurality of parking positions for each truck crane and a plurality of predetermined positions corresponding to the gantry crane along the transfer path based on the transfer path of the gantry crane and the rotation distance of the boom of the truck crane;

[0008] Step S3, controlling each truck crane to synchronously travel along the transfer path to its respective corresponding parking position, and after each reaching its respective corresponding parking position, controlling the booms of each truck crane to jointly lift the gantry crane, and hoisting the gantry crane from the previous predetermined position to the next predetermined position by rotating the boom until the gantry crane is hoisted to the target position.

[0009] In an embodiment of the present invention, step S1 includes:

[0010] Step S11, using connecting rods to respectively connect the flexible legs and the main beam of the gantry crane, and fixedly connecting the flexible legs and the main beam through a first clamping plate;

[0011] Step S12, arranging a first gasket between the trolley of the gantry crane and the lower cross beam;

[0012] Step S13, arranging a second gasket between the middle balance beam and the small balance beam of the trolley, and fixedly connecting the large balance beam and the middle balance beam of the trolley through a second clamping plate.

[0013] In one embodiment of the present invention, step S2 comprises:

[0014] Step S21, determining the number of movements of the truck crane based on the length of the transfer path and the rotation distance of the boom of the truck crane;

[0015] Step S22: setting a plurality of parking positions for each mobile crane and a plurality of predetermined positions corresponding to the gantry rail crane along the transfer path based on the length of the transfer path and the number of movements of the mobile crane.

[0016] In one embodiment of the present invention, step S22 further includes:

[0017] A plurality of driving auxiliary lines are set for each truck crane along the transfer path, and a position auxiliary line of the truck crane is set at each parking position.

[0018] In one embodiment of the present invention, a predetermined interval is provided between two adjacent driving assistance lines.

[0019] In one embodiment of the present invention, step S3 includes:

[0020] Step S31, when each mobile crane reaches its corresponding parking position, controlling the multiple mobile cranes to synchronously lift the booms, applying a first predetermined load to the multiple gantry rail cranes to test the status of the multiple mobile cranes;

[0021] Step S32, when the test is completed, controlling the multiple truck cranes to synchronously lift the booms, applying a second predetermined load to the multiple gantry rail cranes to lift the gantry rail cranes to a predetermined height;

[0022] Step S33: When the gantry crane reaches a predetermined height, the plurality of truck cranes are controlled to rotate the booms synchronously to lift the gantry crane to a predetermined position.

[0023] In one embodiment of the present invention, step S31 includes:

[0024] Step S311, setting a plurality of lifting ears on the main beam of the gantry track crane;

[0025] Step S312, multiple truck cranes are connected to their corresponding lifting ears through steel wire ropes;

[0026] Step S313, controlling multiple truck cranes to synchronously lift the booms to apply a first predetermined load to the gantry rail crane.

[0027] In one embodiment of the present invention, the first predetermined load is smaller than the second predetermined load, and the second predetermined load is smaller than the maximum lifting load of the truck crane.

[0028] In one embodiment of the present invention, multiple truck cranes are divided into a first transport vehicle group and a second transport vehicle group, and the first transport vehicle group is located in front of the second transport vehicle group. Step S3 further includes:

[0029] When multiple truck cranes are respectively located at their corresponding parking positions and there is a height difference between the first transport vehicle group and the second transport vehicle group, a height compensation tooling is set at the low-position site at the corresponding predetermined position to support the trolley of the corresponding gantry crane.

[0030] In one embodiment of the present invention, the gantry crane relocation method further includes:

[0031] Step S4: After the gantry crane reaches the target position, remove the strengthening tooling and lifting lugs on the gantry crane.

[0032] At least one of the above technical solutions of the present invention has the following beneficial effects:

[0033] In the gantry crane relocation method of the present invention, the gantry crane is lifted by a truck crane, and the gantry crane is gradually displaced by rotating the boom of the truck crane. When there is a height difference in the transfer path, the gantry crane can also be displaced by extending and raising the boom. Thus, the problem of site height difference is overcome, the whole machine relocation of the gantry crane is realized, and the stability and safety are improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] Figure 1 It is a flowchart of the gantry crane relocation method in an embodiment of the present invention;

[0035] Figure 2 It is a flowchart of step S1 in an embodiment of the present invention;

[0036] Figure 3 It is a front view of the gantry crane during the whole machine reinforcement in the gantry crane relocation method in an embodiment of the present invention;

[0037] Figure 4 It is a side view of the gantry crane during the whole machine reinforcement in the gantry crane relocation method in an embodiment of the present invention;

[0038] Figure 5 It is a partial structural schematic diagram of the gantry crane during the whole machine reinforcement in the gantry crane relocation method in an embodiment of the present invention;

[0039] Figure 6 It is a flowchart of step S2 in an embodiment of the present invention;

[0040] Figure 7 It is a flowchart of step S3 in an embodiment of the present invention;

[0041] Figure 8 This is the flowchart of step S31 in the embodiment of the present invention;

[0042] Figure 9 This is the structural schematic diagram of setting a height compensation tooling at the low-position site corresponding to the gantry crane relocation method in the embodiment of the present invention.

[0043] Reference numerals: 100, main beam; 200, flexible leg; 300, connecting rod; 400, first clamping plate; 500, trolley; 600, first gasket; 700, second gasket; 800, second clamping plate; 900, height compensation tooling. Detailed implementation manners

[0044] To make the objectives, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are some but not all of the embodiments of the present invention. All other embodiments obtained by those of ordinary skill in the art based on the described embodiments of the present invention fall within the scope of protection of the present invention.

[0045] First, a gantry crane relocation method according to an embodiment of the present invention will be specifically described below with reference to the accompanying drawings.

[0046] As Figure 1 shown, the gantry crane relocation method of the embodiment of the present invention may include the following steps:

[0047] Step S1: Use a strengthening tooling to reinforce the whole gantry crane.

[0048] In this embodiment, since the gantry crane has a flexible leg 200 and the trolley 500 will shake between the lower cross beam, the middle balance beam and the small balance beam during transportation, a strengthening tooling can be used to reinforce the whole gantry crane to ensure the stability and safety during the whole-machine relocation. Specifically, as Figure 2 shown, step S1 may include the following steps.

[0049] Step S11: Use connecting rods to connect the flexible leg and the main beam of the gantry crane respectively, and fixedly connect the flexible leg and the main beam through the first clamping plate.

[0050] In this embodiment, the main beam 100 and the flexible leg 200 of the gantry crane are connected by hinges, and there is no support structure between the main beam 100 and the flexible leg 200. Therefore, as Figure 3 and Figure 4As shown, the connecting rod 300 arranged below the main beam 100 can be used to connect the main beam 100 and the flexible leg 200 respectively. For example, channel steels are used to connect the main beam 100 and the flexible leg 200, and the flexible leg 200 and the main beam 100 are fixedly connected through the first clamping plate 400, so as to fix the relative positions of the flexible leg 200 and the main beam 100, avoid the swinging of the flexible leg 200 during the relocation process, and improve the stability and safety.

[0051] Step S12: Set a first gasket between the trolley of the gantry crane and the lower crossbeam.

[0052] In this embodiment, the first gasket 600 can be a sleeper. As Figure 5 shown, by setting the first gasket 600 between the trolley 500 and the lower crossbeam, it is possible to avoid the contact or displacement between the trolley 500 and the lower crossbeam during the relocation process, and improve the stability and safety.

[0053] Step S13: Set a second gasket between the middle balance beam and the small balance beam of the trolley, and fixedly connect the large balance beam and the middle balance beam of the trolley through a second clamping plate.

[0054] In this embodiment, the second gasket 700 can be a sleeper. As Figure 5 shown, by setting the second gasket 700 between the middle balance beam and the small balance beam of the trolley 500, and fixedly connecting the large balance beam and the middle balance beam of the trolley 500 through the second clamping plate 800, it is possible to avoid the displacement of the trolley 500 during the relocation process, and improve the stability and safety.

[0055] Step S2: Set a plurality of parking positions for each truck crane and a plurality of predetermined positions corresponding to the gantry crane along the transfer path based on the transfer path of the gantry crane and the rotation distance of the boom of the truck crane along the transfer path.

[0056] In this embodiment, the boom of the truck crane can be used to lift the gantry crane synchronously first, and the boom can be rotated synchronously after lifting to displace the gantry crane. Further, a plurality of parking positions for each truck crane and a plurality of predetermined positions corresponding to the gantry crane can be set along the transfer path based on the transfer path of the gantry crane and the rotation distance of the boom of the truck crane along the transfer path, so as to gradually relocate the gantry crane to the target position. Specifically, as Figure 6 shown, step S2 may include the following steps:

[0057] Step S21: Determine the number of movements of the truck crane based on the length of the transfer path and the rotation distance of the boom of the truck crane.

[0058] In this embodiment, the number of movements of the truck crane can be determined based on the length of the transfer path and the maximum rotation distance of the boom of the truck crane.

[0059] Step S22: setting a plurality of parking positions for each mobile crane and a plurality of predetermined positions corresponding to the gantry rail crane along the transfer path based on the length of the transfer path and the number of movements of the mobile crane.

[0060] In this embodiment, by setting a plurality of parking positions for each truck crane and a plurality of predetermined positions corresponding to the gantry crane, the gantry crane can be gradually moved to the target position. Specifically, step S22 may include the following steps:

[0061] A plurality of driving auxiliary lines are set for each truck crane along the transfer path, and a position auxiliary line of the truck crane is set at each parking position.

[0062] In this embodiment, by providing multiple driving auxiliary lines for each mobile crane, and providing a predetermined spacing between two adjacent driving auxiliary lines, the mobile crane can accurately travel along the transfer path, and avoid the mobile crane from going out of the transfer path. At the same time, by providing a position auxiliary line for the mobile crane at each parking position, the mobile crane can stop at a predetermined lifting position after each movement, and uneven force on the gantry rail crane can be avoided, thereby improving stability and safety.

[0063] Step S3, control each mobile crane to synchronously drive along the transfer path to its corresponding parking position, and after each arrival at its corresponding parking position, control the lifting arm of each mobile crane to jointly lift the gantry rail crane, and lift the gantry rail crane from the previous predetermined position to the next predetermined position by rotating the lifting arm, until the gantry rail crane is lifted to the target position.

[0064] In one embodiment of the present invention, Figure 7 As shown, step S3 may include the following steps:

[0065] Step S31, when each mobile crane reaches its corresponding parking position, control the multiple mobile cranes to synchronously lift the lifting arms, and apply a first predetermined load to the multiple gantry rail cranes to test the status of the multiple mobile cranes.

[0066] In this embodiment, the first predetermined load may be 50% of the overall load of the gantry rail crane. By applying the first predetermined load to multiple gantry rail cranes to test the status of multiple mobile cranes, the status of the mobile cranes can be tested before the relocation operation officially begins, thereby improving safety. Figure 8 As shown, step S31 may include the following steps:

[0067] Step S311, setting a plurality of lifting ears on the main beam of the gantry track crane;

[0068] Step S312, multiple truck cranes are connected to their corresponding lifting ears through steel wire ropes;

[0069] Step S313: Control multiple truck cranes to lift the boom in a linked and synchronous manner to apply a first predetermined load to the gantry crane.

[0070] By arranging multiple lifting lugs on the main beam 100 of the gantry crane and using multiple truck cranes to respectively connect their corresponding lifting lugs through steel wire ropes to apply the first predetermined load, the safety can be effectively improved.

[0071] Step S32: After the test is completed, control multiple truck cranes to lift the boom in a linked and synchronous manner, and apply a second predetermined load to multiple gantry cranes to lift the gantry crane to a predetermined height.

[0072] In this embodiment, the second predetermined load is equal to the overall load of the gantry crane, and the predetermined height can be 0.5 meters. Thus, it can prepare for the next step of rotating the boom to displace the gantry crane.

[0073] Step S33: When the gantry crane reaches the predetermined height, control multiple truck cranes to rotate the boom in a linked and synchronous manner to lift and transport the gantry crane to a predetermined position.

[0074] In this embodiment, the above process can be repeated multiple times. After each time the gantry crane is lifted and transported to the predetermined position, the multiple truck cranes lower the gantry crane, then drive to their respective next parking positions, and then control the booms of each truck crane to lift the gantry crane in a linked manner again. By rotating the boom, the gantry crane is lifted and transported from the previous predetermined position to the next predetermined position until the gantry crane is lifted and transported to the target position. When there is a height difference in the transfer path, the gantry crane can also be displaced by extending and raising the boom, moving the gantry crane from a low-level site to a high-level site, or moving the gantry crane from a high-level site to a low-level site. Thus, the problem of site height difference is overcome, the whole-machine relocation of the gantry crane is realized, and the stability and safety are improved.

[0075] In an embodiment of the present invention, the first predetermined load is less than the second predetermined load, and the second predetermined load is less than the maximum lifting load of the truck crane. For example, the second predetermined load can be 75% of the maximum lifting load of the truck crane, so as to improve the stability of the truck crane during lifting and moving.

[0076] In an embodiment of the present invention, the multiple truck cranes are divided into a first transport vehicle group and a second transport vehicle group, and the first transport vehicle group is located in front of the second transport vehicle group. Step S3 further includes:

[0077] When multiple truck cranes are respectively located at their corresponding parking positions and there is a height difference between the first transport vehicle group and the second transport vehicle group, a height compensation tooling 900 is provided at the low-position site at the corresponding predetermined position to support the trolley 500 of the corresponding gantry crane.

[0078] In this embodiment, as Figure 9 shown, the height compensation tooling 900 can be pre-set at the low-position site at the corresponding predetermined position, and then the truck cranes in the first transport vehicle group and the second transport vehicle group are controlled to lift the gantry crane to a predetermined height through the boom and synchronously rotate the boom to hoist the end of the gantry crane close to the low-position site onto the height compensation tooling 900. At this time, the end close to the high-position site is located at the high-position site. Then the first transport vehicle group and the second transport vehicle group can lower the gantry crane. At this time, since there is the height compensation tooling 900 supporting the gantry crane at the low-position site, the two ends of the gantry crane are horizontal. After that, the first transport vehicle group and the second transport vehicle group can be controlled to move synchronously to the next parking position corresponding to each truck crane; the multiple truck cranes of the first transport vehicle group and the second transport vehicle group are controlled to connect the gantry crane through the boom and synchronously rotate the boom to hoist the gantry crane to the next predetermined position on the low-position site or the high-position site. At this time, both the front and rear ends of the gantry crane are located at the high-position site. Thus, the problem of the height difference of the site is overcome, the whole-machine relocation of the gantry crane is realized, and the stability and safety are improved.

[0079] In an embodiment of the present invention, the method for relocating the gantry crane further includes:

[0080] Step S4, after the gantry crane reaches the target position, remove the strengthening tooling and lifting lugs on the gantry crane.

[0081] In summary, for the method for relocating the gantry crane of the present invention, the gantry crane is lifted by using a truck crane, and the gantry crane is gradually displaced by rotating the boom of the truck crane. When there is a height difference in the transfer path, the gantry crane can also be displaced by extending the boom. Thus, the problem of the height difference of the site is overcome, the whole-machine relocation of the gantry crane is realized, and the stability and safety are improved.

[0082] Unless otherwise defined, technical terms or scientific terms used in the present invention shall have the ordinary meanings as understood by those of ordinary skill in the art to which the present invention pertains. The "first", "second" and similar terms used in the present invention do not denote any order, quantity or importance, but are only used to distinguish different components. Similarly, words such as "a" or "an" do not denote a quantity limitation, but mean that there is at least one. The terms "connected" or "coupled" and the like are not limited to physical or mechanical connections, but may include electrical connections, whether direct or indirect. The terms "upper", "lower", "left", "right" and the like are only used to indicate relative positional relationships, and when the absolute position of the object being described changes, the relative positional relationship also changes accordingly.

[0083] The above are the preferred embodiments of the present invention. It should be noted that for those of ordinary skill in the art of the present technology, without departing from the principle of the present invention, several improvements and modifications can be made, and these improvements and modifications should also be regarded as within the protection scope of the present invention.

Claims

1. A method for relocating a gantry crane, characterized in that, include: Step S1, using reinforcement tooling to reinforce the entire gantry rail crane; Step S2, setting a plurality of parking positions for each of the truck cranes and a plurality of predetermined positions corresponding to the gantry rail cranes along the transfer path based on the transfer path of the gantry rail crane and the rotation distance of the boom of the truck crane; Step S3, control each of the mobile cranes to synchronously travel along the transfer path to the corresponding parking position, and after each arrival at the corresponding parking position, control the lifting arm of each mobile crane to jointly lift the gantry rail crane, and lift the gantry rail crane from the previous predetermined position to the next predetermined position by rotating the lifting arm, until the gantry rail crane is lifted to the target position.

2. The gantry crane relocation method according to claim 1, characterized in that, The step S1 comprises: Step S11, using connecting rods to respectively connect the flexible legs and the main beam of the gantry rail crane, and fixing the flexible legs and the main beam through a first clamping plate; Step S12, arranging a first gasket between the trolley and the lower crossbeam of the gantry rail crane; Step S13, setting a second gasket between the middle balance beam and the small balance beam of the large vehicle, and fixing the large balance beam and the middle balance beam of the large vehicle with each other through a second clamping plate.

3. The gantry crane relocation method according to claim 1, characterized in that, The step S2 comprises: Step S21, determining the number of movements of the truck crane based on the length of the transfer path and the rotation distance of the boom of the truck crane; Step S22: setting a plurality of parking positions for each of the mobile cranes and a plurality of predetermined positions corresponding to the gantry rail cranes along the transfer path based on the length of the transfer path and the number of movements of the mobile crane.

4. The gantry rail crane relocation method according to claim 3, wherein, The step S22 further includes: A plurality of driving auxiliary lines are arranged for each of the mobile cranes along the transfer path, and a position auxiliary line of the mobile crane is arranged at each of the parking positions.

5. The gantry rail crane relocation method according to claim 4, characterized in that, A predetermined interval is set between two adjacent driving assistance lines.

6. The gantry rail crane relocation method according to claim 2, wherein, The step S3 comprises: Step S31, when each of the mobile cranes reaches the corresponding parking position, controlling the multiple mobile cranes to synchronously lift the booms, applying a first predetermined load to the multiple gantry rail cranes to test the status of the multiple mobile cranes; Step S32, when the test is completed, controlling the plurality of truck cranes to synchronously lift the booms, applying a second predetermined load to the plurality of gantry rail cranes to lift the gantry rail cranes to a predetermined height; Step S33: When the gantry rail crane reaches a predetermined height, the plurality of truck cranes are controlled to rotate the lifting arms synchronously to lift the gantry rail crane to the predetermined position.

7. The gantry crane relocation method according to claim 6, wherein The step S31 comprises: Step S311, setting a plurality of lifting ears on the main beam of the gantry rail crane; Step S312, the plurality of mobile cranes are connected to the corresponding lifting ears respectively through steel wire ropes; Step S313: Control the plurality of truck cranes to synchronously lift their booms to apply the first predetermined load to the gantry rail crane.

8. The gantry crane relocation method according to claim 6, characterized in that, The first predetermined load is smaller than the second predetermined load, and the second predetermined load is smaller than the maximum lifting load of the truck crane.

9. The gantry rail crane relocation method according to claim 2, characterized in that A plurality of the truck cranes are divided into a first transport vehicle group and a second transport vehicle group, and the first transport vehicle group is located in front of the second transport vehicle group. The step S3 further includes: When the plurality of truck cranes are respectively located at their corresponding parking positions and there is a height difference between the first transport vehicle group and the second transport vehicle group, a height compensation tooling is arranged at the low-position site of the corresponding predetermined position to support the trolley of the corresponding gantry crane.

10. The gantry rail crane relocation method according to claim 7, characterized in that, It further includes: Step S4, after the gantry crane reaches the target position, remove the strengthening tooling and the lifting lugs on the gantry crane.

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