A deviation correction method for the trolley on a crane

Abstract

The present invention relates to the technical field of cranes, and discloses a deviation correction method for the trolley on a crane. The method specifically includes: Step S1: Use a jacking mechanism to jack up the column in the vertical direction and remove the original hinge shaft; Step S2: Weld widened hinge seats to the original hinge seats on the bogie frame and the column respectively, so as to widen the original hinge seats axially; Step S3: Replace the original hinge shaft with an extended hinge shaft, and place the extended hinge shaft in the accommodation grooves of the original hinge seat and the widened hinge seat located on the bogie frame; Step S4: Use a hoisting mechanism to move the bogie frame and the extended hinge shaft thereon horizontally towards the inner side of the track by a preset distance; Step S5: Use the jacking mechanism to reset the column in the vertical direction, so that the extended hinge shaft is accommodated in the accommodation grooves of the original hinge seat and the widened hinge seat located on the column. This method can increase the contact area between the running wheels and the track, reduce the wheel pressure, correct the deviation of the upper trolley, prevent the running wheels from deviating excessively and causing derailment, and improve the hoisting efficiency.

Description

Technical Field

[0001] The invention relates to the technical field of cranes, and in particular to a deviation correction method for a trolley on a crane. Background Art

[0002] With the continuous development of the manufacturing industry, automated production lines are increasingly widely used. However, in the process of automated production lines, material handling, process flow, and quality inspection all require some horizontal or vertical lifting and handling within a certain range. Cranes, as key process equipment and important auxiliary equipment machinery that reduce heavy labor, improve work efficiency, and achieve production, have been widely used in many fields. Gantry cranes are indispensable large-scale equipment in the shipbuilding industry. They are mainly used for the lifting, turning over, and installation of various large sections of ships. The total lifting capacity can reach 600T.

[0003] Gantry cranes are often operated outdoors at high loads all year round and are used with large loads. Lack of maintenance will inevitably lead to the phenomenon of the upper trolley running off the track and gnawing the rails. It has been verified that the main reason is that the upper trolley's columns and the trolley frame are outward, causing the span to become larger. This phenomenon will bring a lot of inconvenience to the lifting work, and more seriously, there will be derailment accidents, which will cause greater safety hazards and seriously affect the production of enterprises.

[0004] Therefore, it is urgent to provide a deviation correction method for a trolley on a crane to solve the above problems. Summary of the invention

[0005] The purpose of the present invention is to provide a method for correcting the deviation of a trolley on a crane, which corrects the deviation problem of the trolley by increasing the contact area between the running wheels and the track, improves the lifting efficiency, and saves equipment maintenance costs.

[0006] To achieve this object, the present invention is implemented through the following technical solutions:

[0007] A method for correcting the deviation of a trolley on a crane, wherein the trolley comprises a trolley frame and a column, wherein the trolley frame is located below the column and cooperates with a track, wherein the trolley frame and the column are connected via an original hinge shaft, wherein both the trolley frame and the column are provided with an original hinge seat, wherein the original hinge shaft is accommodated in an accommodating groove of the original hinge seat, and wherein the method for correcting the deviation of the trolley on the crane specifically comprises:

[0008] Step S1: using a lifting mechanism to lift the column in a vertical direction and take out the original hinge shaft;

[0009] Step S2: welding widened hinge seats on the original hinge seats of the trolley frame and the column respectively, so that the original hinge seats are widened in the axial direction;

[0010] Step S3: Replace the original hinge shaft with the lengthened hinge shaft, and place the lengthened hinge shaft in the accommodation grooves of the original hinge seat and the widened hinge seat located on the bogie frame;

[0011] Step S4: Use the hoisting mechanism to move the bogie frame and the lengthened hinge shaft thereon horizontally inward along the track by a preset distance;

[0012] Step S5: Use the jacking mechanism to reset the column vertically to dock it to the bogie frame, and the lengthened hinge shaft is accommodated in the accommodation grooves of the original hinge seat and the widened hinge seat located on the column.

[0013] As a preferred solution of the deviation correction method for the trolley on a crane, the original hinge seats on the bogie frame include a first lower hinge seat and a second lower hinge seat arranged at intervals, the original hinge seats on the column include a first upper hinge seat and a second upper hinge seat arranged at intervals, and step S2 specifically includes:

[0014] Step S21: Weld a first lower widened hinge seat outside the first lower hinge seat, weld a second lower widened hinge seat inside the second lower hinge seat, weld a first upper widened hinge seat inside the first upper hinge seat, and weld a second upper widened hinge seat outside the second upper hinge seat.

[0015] As a preferred solution of the deviation correction method for the trolley on a crane, after step S21 in step S2, it further includes:

[0016] Step S22: Weld a first support member and a second support member on the outside and inside of the bogie frame respectively. The end face of the first support member abuts against the lower end face of the first lower widened hinge seat to reinforce the first lower widened hinge seat, and the end face of the second support member abuts against the upper end face of the second upper widened hinge seat to reinforce the second upper widened hinge seat.

[0017] As a preferred solution of the deviation correction method for the trolley on a crane, before step S21 in step S2, it further includes:

[0018] Step S20: Grind the welding surfaces of each original hinge seat and each widened hinge seat.

[0019] As a preferred solution of the deviation correction method for the trolley on a crane, the lengthened hinge shaft includes a first main shaft and a first end shaft and a second end shaft connected to both ends of the first main shaft. Step S3 specifically includes:

[0020] The extended hinge shaft is placed in the receiving grooves of the original hinge seat and the widened hinge seat on the trolley frame, so that the first end shaft is received in the receiving grooves of the first lower hinge seat and the first lower widened hinge seat, and the second end shaft is received in the receiving grooves of the second lower hinge seat and the second lower widened hinge seat.

[0021] As a preferred solution of a deviation correction method for a trolley on a crane, the step S1 further includes:

[0022] Step S10: welding a lifting support member on the inner side of the column, and the lifting mechanism lifts the column through the lifting support member.

[0023] As a preferred solution of a method for correcting the deviation of a trolley on a crane, the lifting mechanism in step S1 includes a bench and a cylinder, the bench is arranged on a beam, the cylinder is arranged between the bench and the lifting support, and the cylinder lifts the column through the lifting support.

[0024] As a preferred solution of the deviation correction method of a trolley on a crane, before step S4, the following steps are further included:

[0025] Step S40: welding lifting ears on the side of the trolley frame, and the lifting mechanism lifts the trolley frame through the lifting ears.

[0026] As a preferred solution of a method for correcting the deviation of a trolley on a crane, the preset distance in step S4 is 0.1-1.0 mm.

[0027] As a preferred solution of the deviation correction method of a trolley on a crane, the step S5 further includes:

[0028] Step S6: measuring the data of the running wheels of the upper trolley.

[0029] The beneficial effects of the present invention are:

[0030] The present invention provides a method for correcting the deviation of a trolley on a crane, wherein the original hinge shaft is replaced with an extended hinge shaft, and a widened hinge seat is welded on the original hinge seat of a trolley frame and a column. After the trolley frame and the column are docked, the widened hinge seat can support and fix the extended hinge shaft, thereby ensuring that the force on the extended hinge shaft is uniform. The trolley frame is moved a preset distance inwardly of the track, the position of the running wheels of the trolley relative to the track is adjusted, the contact area between the running wheels and the track is increased, and the wheel pressure is reduced to correct the deviation problem of the trolley, prevent the derailment caused by excessive deviation of the running wheels, improve the hoisting efficiency, and save equipment maintenance costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] To more clearly and understandably illustrate the embodiments of the present invention or the technical solutions in the prior art, the following will briefly introduce the drawings required for the description of the embodiments or the prior art. The following described drawings are some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0032] Figure 1 is the front view of the upper trolley before deviation correction provided by the embodiment of the present invention;

[0033] Figure 2 is the front view of the upper trolley after deviation correction provided by the embodiment of the present invention;

[0034] Figure 3 is the exploded view of the upper trolley after deviation correction provided by the embodiment of the present invention;

[0035] Figure 4 is the cross-sectional view of the upper trolley before deviation correction provided by the embodiment of the present invention;

[0036] Figure 5 is the cross-sectional view of the upper trolley after deviation correction provided by the embodiment of the present invention;

[0037] Figure 6 is the main step flow chart of the deviation correction method for the upper trolley of the crane provided by the embodiment of the present invention;

[0038] Figure 7 is the specific operation flow chart of step S2 in the deviation correction method for the upper trolley of the crane provided by the embodiment of the present invention.

[0039] In the figure:

[0040] 100, girder; 110, track;

[0041] 200, upper trolley; 210, bogie frame; 211, frame body; 2111, first lower hinge seat; 2112, second lower hinge seat; 2113, first lower widened hinge seat; 2114, second lower widened hinge seat; 2115, first support member; 212, traveling wheel; 220, column; 221, first upper hinge seat; 222, second upper hinge seat; 223, first upper widened hinge seat; 224, second upper widened hinge seat; 225, second support member; 230, original hinge shaft; 231, second main shaft; 232, third end shaft; 233, fourth end shaft; 240, lengthened hinge shaft; 241, first main shaft; 242, first end shaft; 243, second end shaft;

[0042] 300, jacking mechanism; 310, stool; 320, oil cylinder; 330, iron plate;

[0043] 400, jacking support member. Detailed implementation manners

[0044] The present invention will be further described in detail below with reference to the accompanying drawings and embodiments. It can be understood that the specific embodiments described herein are only for explaining the present invention, rather than limiting the present invention. Additionally, it should be noted that for the sake of description, only the parts related to the present invention are shown in the drawings, rather than all the structures.

[0045] In the description of the present invention, unless otherwise clearly defined and limited, the terms "connected", "connected to", and "fixed" shall be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or an integral body; it may be a mechanical connection or an electrical connection; it may be directly connected or indirectly connected through an intermediate medium, and it may be the internal communication of two components or the interaction relationship between two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0046] In the present invention, unless otherwise clearly defined and limited, the first feature being "above" or "below" the second feature may include the direct contact between the first and second features, or may include the situation where the first and second features are not in direct contact but in contact through other features therebetween. Moreover, the first feature being "above", "above the", and "on the" second feature includes the first feature being directly above and obliquely above the second feature, or simply indicating that the horizontal height of the first feature is higher than that of the second feature. The first feature being "below", "below the", and "under the" second feature includes the first feature being directly below and obliquely below the second feature, or simply indicating that the horizontal height of the first feature is lower than that of the second feature.

[0047] In the description of this embodiment, the orientation or positional relationships such as "above", "below", "left", and "right" are based on the orientation or positional relationships shown in the drawings, and are only for the convenience of description and simplifying the operation, rather than indicating or implying that the device or component referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus cannot be understood as a limitation to the present invention. In addition, the terms "first" and "second" are only used for distinction in description and have no special meaning.

[0048] This embodiment provides a deviation correction method for the trolley on a crane, which is used to correct the deviation problem that occurs to the trolley 200 after working for a period of time. Among them, the crane is specifically a 600T gantry crane.

[0049] Specifically, as Figure 1As shown in the figure, the upper trolley 200 is arranged on the girder 100 of the crane. A track 110 is arranged on the girder 100, and the upper trolley 200 can move along the track 110. Among them, the upper trolley 200 includes a trolley frame 210 and a column 220. The trolley frame 210 is located below the column 220. The trolley frame 210 includes a frame body 211 and a traveling wheel 212 rotatably arranged on the frame body 211. The traveling wheel 212 rotates along the track 110 to achieve movement. The frame body 211 and the column 220 are connected by an original hinge shaft 230. Original hinge seats are arranged on both the frame body 211 and the column 220, and the original hinge shaft 230 is accommodated in the accommodation groove of the original hinge seat. Since the traveling wheel 212 on the rigid leg of the crane has a flange, it is in unilateral contact when cooperating with the track 110, while the traveling wheel 212 above the flexible leg has no flange and has a relatively large offset. Therefore, the method provided in this embodiment is applicable to the deviation correction of the traveling wheel 212 above the flexible leg.

[0050] Specifically, the deviation correction method of the upper trolley of the crane specifically includes:

[0051] Step S1: Use the jacking mechanism 300 to jack up the column 220 in the vertical direction and remove the original hinge shaft 230. It can be understood that in order to prevent the hinge shaft from shifting during the operation of the crane, positioning rings are usually sleeved at both ends of the hinge shaft. Therefore, before jacking up the column 220, the positioning rings at both ends of the original hinge shaft 230 need to be removed first.

[0052] Before step S1, it further includes:

[0053] Step S10: Weld a jacking support 400 on the inner side of the column 220, and the jacking mechanism 300 jacks up the column 220 through the jacking support 400. By setting the jacking support 400, it is convenient to jack up the column 220, playing an auxiliary jacking role.

[0054] Preferably, as Figure 1 shown, the jacking mechanism 300 includes a stool 310 and an oil cylinder 320. The stool 310 is arranged on the girder 100, and the oil cylinder 320 is arranged between the stool 310 and the jacking support 400. The oil cylinder 320 jacks up the column 220 through the jacking support 400. Since there is a certain interval distance between the column 220 and the girder 100 in the vertical direction, by setting the stool 310, the oil cylinder 320 can be supported to a certain height to facilitate jacking up the column 220. The specification of the oil cylinder 320 is selected as a 200T oil cylinder. Further preferably, an iron plate 330 is laid on the upper surface of the girder 100, and the stool 310 is arranged on the iron plate 330 and welded for reinforcement. Among them, the thickness of the iron plate 330 is 20 mm. It should be noted that the centers of the jacking support 400, the oil cylinder 320, and the stool 310 are located on the same straight line in the vertical direction to ensure uniform force.

[0055] It should be noted that before step S10, the upper trolley 200 needs to be driven along the track 110 to an appropriate position and stopped stably, and sleeper timbers should be stuffed outside the walking wheels 212 and firmly padded to prevent the upper trolley 200 from moving during subsequent operations. At the same time, the docking position should preferably be selected at a place where there are reinforcing ribs inside the girder 100 to ensure the support strength.

[0056] Furthermore, it further includes step S2: Widening hinge seats are respectively welded to the original hinge seats on the bogie frame 210 and the column 220 so as to widen the original hinge seats axially.

[0057] Specifically, in combination with Figure 3 , the original hinge seats on the frame body 211 specifically include a first lower hinge seat 2111 and a second lower hinge seat 2112 which are arranged at intervals, and the original hinge seats on the column 220 specifically include a first upper hinge seat 221 and a second upper hinge seat 222 which are arranged at intervals. Step S2 specifically includes:

[0058] Step S21: A first lower widened hinge seat 2113 is welded outside the first lower hinge seat 2111, a second lower widened hinge seat 2114 is welded inside the second lower hinge seat 2112, a first upper widened hinge seat 223 is welded inside the first upper hinge seat 221, and a second upper widened hinge seat 224 is welded outside the second upper hinge seat 222. This step widens the corresponding hinge seats axially for supporting the lengthened hinge shaft 240 subsequently. It should be noted that a protrusion is provided on the side surface of one of the original hinge seat and the corresponding widened hinge seat, and a groove is provided on the side surface of the other. The protrusion can be inserted into the groove, thereby forming a guiding limit between the original hinge seat and the widened hinge seat, facilitating assembly and positioning, and facilitating the subsequent welding process.

[0059] Furthermore, as shown in Figure 2 and Figure 3 , it further includes step S22: A first support member 2115 and a second support member 225 are respectively welded on the outside and inside of the bogie frame 210. The end surface of the first support member 2115 abuts against the lower end surface of the first lower widened hinge seat 2113 to reinforce the first lower widened hinge seat 2113, and the end surface of the second support member 225 abuts against the upper end surface of the second upper widened hinge seat 224 to reinforce the second upper widened hinge seat 224.

[0060] Specifically, as shown in Figure 2As shown, after the column 220 is reset and docked, a part of the first upper hinge seat 221 presses on the first lower widened hinge seat 2113. To prevent the first lower widened hinge seat 2113 from deforming or falling off due to stress concentration, the first support member 2115 supports below the first lower widened hinge seat 2113 to ensure uniform force and stable connection of the first lower widened hinge seat 2113. Similarly, the second support member 225 and the second lower hinge seat 2112 respectively abut against two end faces of the second upper widened hinge seat 224 to ensure uniform force and stable connection of the second upper widened hinge seat 224 and prevent the second upper widened hinge seat 224 from deforming or falling off due to stress concentration.

[0061] Preferably, before step S21 in step S2, it further includes:

[0062] Step S20: Grind the welding surfaces of each original hinge seat and each widened hinge seat. This process is mainly used to grind debris and impurities on the welding surfaces of the original hinge seat and the widened hinge seat to ensure a good welding effect.

[0063] Further, in step S3: Replace the original hinge shaft 230 with an extended hinge shaft 240, and place the extended hinge shaft 240 in the accommodation grooves of the original hinge seat and the widened hinge seat located on the bogie frame 210.

[0064] Specifically, as Figure 3 shown and Figure 5 shown, the extended hinge shaft 240 includes a first main shaft 241 and a first end shaft 242 and a second end shaft 243 connected to both ends of the first main shaft 241. Step S3 specifically includes:

[0065] Place the extended hinge shaft 240 in the accommodation grooves of the original hinge seat and the widened hinge seat located on the bogie frame 210, so that the first end shaft 242 is accommodated in the accommodation grooves of the first lower hinge seat 2111 and the first lower widened hinge seat 2113, and the second end shaft 243 is accommodated in the accommodation grooves of the second lower hinge seat 2112 and the second lower widened hinge seat 2114.

[0066] It should be noted that the structures of the original hinge shaft 230 and the extended hinge shaft 240 are basically the same, and the difference is that the length of the first end shaft 242 and the second end shaft 243 of the extended hinge shaft 240 is increased relative to the original hinge shaft 230.

[0067] It can be understood that the upper trolley 200 before rectification is connected by the original hinge shaft 230, as Figure 4As shown, the original hinge shaft 230 includes a second main shaft 231 and third end shafts 232 and fourth end shafts 233 connected to both ends of the second main shaft 231. The third end shafts 232 and the fourth end shafts 233 have the same diameter, and the diameter of the second main shaft 231 is greater than that of the third end shafts 232 and the fourth end shafts 233. The shape of each original hinge seat and widened hinge seat is a trapezoidal block, with good support strength and structural stability, and a semicircular accommodating groove is provided thereon. After the first lower hinge seat 2111 is docked with the second upper hinge seat 222, a circular accommodating hole is formed to sleeved outside the third end shaft 232, and the third end shaft 232 is completely accommodated in the circular accommodating hole. The width of the first upper hinge seat 221 along the axial direction, the width of the first lower hinge seat 2111 along the axial direction, and the length of the third end shaft 232 are all equal. Similarly, after the second lower hinge seat 2112 is docked with the second upper hinge seat 222, a circular accommodating hole is formed, and the fourth end shaft 233 is completely accommodated in the circular accommodating hole. The width of the second upper hinge seat 222 along the axial direction, the width of the second lower hinge seat 2112 along the axial direction, and the length of the fourth end shaft 233 are all equal.

[0068] Further, as Figure 5 shown, it is a schematic structural diagram of the upper carriage 200 after deviation correction. Specifically, the lengthened hinge shaft 240 includes a first main shaft 241 and first end shafts 242 and second end shafts 243 connected to both ends of the first main shaft 241. The first end shafts 242 and the second end shafts 243 have the same diameter, and the diameter of the first main shaft 241 is greater than that of the first end shafts 242 and the second end shafts 243.

[0069] It should be noted that the first end shafts 242 and the second end shafts 243 are lengthened compared with the third end shafts 232 and the fourth end shafts 233. Correspondingly, the first end shafts 242 are shortened compared with the second end shafts 243. Specifically, referring to Figure 5 , the width of the first upper hinge seat 221 plus the first widened upper hinge seat 223 along the axial direction, the width of the first lower hinge seat 2111 plus the first widened lower hinge seat 2113 along the axial direction, and the length of the first end shaft 242 are all equal. The width of the second upper hinge seat 222 plus the second widened upper hinge seat 224 along the axial direction, and the width of the second lower hinge seat 2112 plus the second widened lower hinge seat 2114 along the axial direction are respectively equal to the length of the second end shaft 243.

[0070] When the lengthened hinge shaft 240 is placed in the accommodating grooves of the original hinge seats and widened hinge seats located on the bogie frame 210, specifically, continue to refer to Figure 5, the first end shaft 242 is received in the semi-circular receiving grooves of the first lower hinge seat 2111 and the first lower widened hinge seat 2113. The first lower hinge seat 2111 and the first lower widened hinge seat 2113 support the first end shaft 242. At the same time, the stepped surface of the first end shaft 242 and the first main shaft 241 just abuts against the inner side surface of the first lower hinge seat 2111. The second end shaft 243 is received in the semi-circular receiving grooves of the second lower hinge seat 2112 and the second lower widened hinge seat 2114. The second lower hinge seat 2112 and the first lower widened hinge seat 2113 support the second end shaft 243. At the same time, the stepped surface of the second end shaft 243 and the second main shaft 231 just abuts against the inner side surface of the second lower widened hinge seat 2114.

[0071] It can be understood that since the lengthened hinge shaft 240 lengthens the lengths of the first end shaft 242 and the second end shaft 243 on the basis of the original hinge shaft 230, if the first end shaft 242 is directly placed on the first lower hinge seat 2111 and the second end shaft 243 is placed on the second lower hinge seat 2112, there will inevitably be positions where the first end shaft 242 is not supported, and similarly, there will also be positions where the second end shaft 243 is not supported. Therefore, in this embodiment, the first lower widened hinge seat 2113 is provided to fill the position where the first end shaft 242 is not supported, and the second lower widened hinge seat 2114 is provided to fill the position where the second end shaft 243 is not supported, thereby realizing the stable support effect on the first end shaft 242 and the second end shaft 243, ensuring uniform force on the first end shaft 242 and the second end shaft 243, and preventing deformation.

[0072] Further, it further includes step S4: using the hoisting mechanism to move the bogie frame 210 and the lengthened hinge shaft 240 thereon horizontally inward by a preset distance along the track 110 to adjust the contact area between the traveling wheels 212 and the track 110. Compare Figure 1 and Figure 2 , it can be seen that the contact area between the corrected traveling wheels 212 and the track 110 increases.

[0073] It has been verified that according to the width of the track 110 and the thickness of the traveling wheels 212 in actual applications, in order to ensure sufficient contact between the traveling wheels 212 and the track 110, the preset distance is preferably 50 - 60 mm, and further preferably 55 mm. Correspondingly, the widths of the above-mentioned widened hinge seats along the axial direction are all 55 mm. Among them, the hoisting mechanism includes a chain block and a safety wire. It should be noted that after the bogie frame 210 is moved in place, it needs to be adjusted to be horizontal and then stabilized and strengthened.

[0074] Preferably, before step S4, it further includes:

[0075] Step S40: Weld a lifting lug on the side of the bogie frame 210, and the hoisting mechanism hoists the bogie frame 210 through the lifting lug. This step is to weld the lifting lug, aiming to facilitate the hoisting and movement of the bogie frame 210.

[0076] Furthermore, step S5 is also included: using the jacking mechanism 300 to reset the column 220 in the vertical direction so as to dock it on the trolley frame 210, and the lengthened hinge shaft 240 is accommodated in the accommodation grooves of the original hinge seat and the widened hinge seat on the column 220. The output end of the oil cylinder 320 is lowered to reset the column 220 so that it docks on the lengthened hinge shaft 240.

[0077] Specifically, refer to Figure 5 , is the state after the column 220 is reset. When the column 220 is reset, the first upper hinge seat 221 and the first upper widened hinge seat 223 are connected with the first lower hinge seat 2111 and the first lower widened hinge seat 2113 located below, so as to be sleeved on the first end shaft 242. At the same time, the step surface of the first end shaft 242 and the first main shaft 241 just abuts against the inner side surface of the first upper widened hinge seat 223 to form a limit. Correspondingly, the second upper hinge seat 222 and the second upper widened hinge seat 224 are connected with the second lower hinge seat 2112 and the second lower widened hinge seat 2114 located below them to be sleeved on the second end shaft 243. At the same time, the step surface of the second end shaft 243 and the second main shaft 231 just abuts against the inner side surface of the second upper hinge seat 222 to form a limit. After the column 220 is reset, the deviation correction work of the walking wheel 212 is completed.

[0078] Furthermore, step S6 is also included: measuring the data of the running wheel 212 of the upper trolley 200. This step is based on the data of the running wheel 212 to determine whether the contact area between the running wheel 212 and the track 110 meets the requirements and whether there is still a deviation problem. It should be noted that after measuring the data, the positioning ring needs to be set and locked on both ends of the extended hinge shaft 240 to complete the fixation. At this point, the deviation correction work is completed.

[0079] In summary, due to the deviation of the running wheel 212, for safety reasons, the upper trolley 200 can only run at 30% of the design speed. After the improvement by the above method, it has been verified that it can reach 60-70% of the initial design speed, which greatly improves the running speed of the upper trolley 200 and speeds up the speed and efficiency of the ship segmented lifting. This improvement has achieved great economic benefits, not only eliminating the original fault problem of the upper trolley 200, but also greatly improving the production efficiency, fundamentally eliminating safety hazards, and effectively ensuring the normal operation of production.

[0080] Obviously, the above-mentioned embodiments of the present invention are merely examples for clearly explaining the present invention, rather than limitations on the implementation manners of the present invention. For those of ordinary skill in the art, other different forms of changes or modifications can be made based on the above description. It is not necessary and impossible to list all implementation manners here. Any modifications, equivalent substitutions, and improvements made within the spirit and principle of the present invention shall be included within the protection scope of the claims of the present invention.

Claims

1. A deviation rectification method for a trolley on a crane. The trolley (200) includes a trolley frame (210) and a column (220). The trolley frame (210) is located below the column (220) and cooperates with a track (110). The trolley frame (210) and the column (220) are connected by an original hinge shaft (230). Original hinge seats are provided on both the trolley frame (210) and the column (220). The original hinge shaft (230) is accommodated in an accommodation groove of the original hinge seat. It is characterized in that, The deviation rectification method for the trolley on the crane specifically includes: Step S1: Use the jacking mechanism (300) to jack up the column (220) in the vertical direction and remove the original hinge shaft (230). Step S2: Weld widened hinge seats to the original hinge seats on the bogie frame (210) and the column (220) respectively, so as to widen the original hinge seats axially. Step S3: Replace the original hinge shaft (230) with an extended hinge shaft (240), and place the extended hinge shaft (240) in the accommodation grooves of the original hinge seat and the widened hinge seat located on the bogie frame (210). Step S4: Use the hoisting mechanism to move the bogie frame (210) and the extended hinge shaft (240) thereon horizontally inward by a preset distance along the track (110). Step S5: Use the jacking mechanism (300) to reset the column (220) in the vertical direction to be docked to the bogie frame (210), and the extended hinge shaft (240) is accommodated in the accommodation grooves of the original hinge seat and the widened hinge seat located on the column (220).

2. The deviation correction method for the trolley on the crane according to claim 1, characterized in that, The original hinge seat on the bogie frame (210) includes a first lower hinge seat (2111) and a second lower hinge seat (2112) arranged at intervals. The original hinge seat on the column (220) includes a first upper hinge seat (221) and a second upper hinge seat (222) arranged at intervals. Step S2 specifically includes: Step S21: Weld a first lower widened hinge seat (2113) outside the first lower hinge seat (2111), weld a second lower widened hinge seat (2114) inside the second lower hinge seat (2112), weld a first upper widened hinge seat (223) inside the first upper hinge seat (221), and weld a second upper widened hinge seat (224) outside the second upper hinge seat (222).

3. The deviation rectification method of the trolley on the crane according to claim 2, wherein, After step S21 in step S2, it further includes: Step S22: Weld a first support member (2115) and a second support member (225) on the outside and inside of the bogie frame (210) respectively. The end face of the first support member (2115) abuts against the lower end face of the first lower widened hinge seat (2113) to reinforce the first lower widened hinge seat (2113), and the end face of the second support member (225) abuts against the upper end face of the second upper widened hinge seat (224) to reinforce the second upper widened hinge seat (224).

4. The deviation rectification method of the trolley on the crane according to claim 2, characterized in that, Before step S21 in step S2, it further includes: Step S20: Grind the welding surfaces of each original hinge seat and each widened hinge seat.

5. The deviation rectification method of the trolley on the crane according to claim 2, characterized in that, The extended hinge shaft (240) includes a first main shaft (241) and a first end shaft (242) and a second end shaft (243) connected to both ends of the first main shaft (241). Step S3 specifically includes: Place the lengthened hinge shaft (240) in the accommodation grooves of the original hinge seat and the widened hinge seat located on the bogie frame (210), so that the first end shaft (242) is placed in the accommodation grooves of the first lower hinge seat (2111) and the first lower widened hinge seat (2113), and the second end shaft (243) is placed in the accommodation grooves of the second lower hinge seat (2112) and the second lower widened hinge seat (2114).

6. The deviation rectification method for the trolley on the crane according to claim 1, characterized in that, Before the step S1, it further includes: Step S10: Weld a jacking support (400) on the inner side of the column (220), and the jacking mechanism (300) jacks up the column (220) through the jacking support (400).

7. The deviation rectification method of the trolley on the crane according to claim 6, characterized in that, The jacking mechanism (300) in the step S1 includes a bench (310) and an oil cylinder (320). The bench (310) is arranged on the girder (100), and the oil cylinder (320) is arranged between the bench (310) and the jacking support (400). The oil cylinder (320) jacks up the column (220) through the jacking support (400).

8. The deviation rectification method for the trolley on the crane according to claim 1, characterized in that, Before the step S4, it further includes: Step S40: Weld a lifting lug on the side of the bogie frame (210), and the hoisting mechanism hoists the bogie frame (210) through the lifting lug.

9. The deviation correction method of the trolley on the crane according to claim 1, characterized in that, The preset distance in the step S4 is 55 - 60 mm.

10. The deviation correction method of the trolley on the crane according to claim 1, characterized in that, The bogie frame (210) includes a frame body (211) and a traveling wheel (212) rotatably arranged on the frame body (211). After the step S5, it further includes: Step S6: Measure the data of the traveling wheel (212).

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