Method and device for dismounting a slewing bearing of a portal crane

Abstract

The application relates to the technical field of bearing dismounting, and discloses a dismounting device for a slewing bearing of a portal crane, which comprises a main machine shell, a main shaft arranged on the main machine shell, a main gear rotatably arranged on the main shaft, a driving device for driving the main gear to rotate, a first connecting rod and a second connecting rod rotatably connected with the main shaft respectively, two groups of dismounting assemblies, the two groups of dismounting assemblies being arranged on the first connecting rod and the second connecting rod respectively, each of the dismounting assemblies comprising a first gear engaged with the main gear, the rotation axis of the first gear being parallel to the rotation axis of the main gear, a rotating screwing base matched with a bolt head, and the first gear driving the rotating screwing base to rotate. Through the technical scheme, the problem that the bolt with different layout and distribution needs to be dismounted while the dismounting efficiency is improved in the related art is solved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of bearing dismounting, in particular to a dismounting method and device for slewing bearing of portal crane. BACKGROUND

[0002] At the wharf, etc., the goods are generally transported by using the portal crane, and the portal crane is generally divided into a main body and a separated part, and the rotation operation of the separated part is realized by connecting the main body and the separated part through the slewing bearing. The slewing bearing is usually fixedly connected with the main body and the separated part through a large number of bolts, and in order to ensure the construction safety and the normal operation of the equipment, the slewing bearing needs to be dismounted and replaced within a certain service life. In the existing method, the bolts are dismounted one by one, which is time-consuming and laborious. After the old bolts are dismounted, new bolts are needed, and the pre-tightening force is not required to be the same as that during the installation. Therefore, a plurality of bolts need to be dismounted at the same time to improve the dismounting efficiency.

[0003] The patent with the application number 200810204234.2 (a dismounting and mounting device for multiple bolts) discloses a mechanism capable of simultaneously dismounting and mounting multiple bolts. However, the disclosed technology has a large defect. Although a large number of bolts can be simultaneously dismounted and mounted, the dismounting and mounting positions are completely fixed, and a device can only adapt to one dismounting and mounting condition. In addition, a completely open operation space is required above the bolts to simultaneously dismount and mount the multiple bolts distributed around the shaft. When the bolts of the slewing bearing are dismounted, the main body and the separated part may not be separated, and the separation can be realized only after the bolts are dismounted. In addition, the bolt distribution of different devices is different. Therefore, the above-mentioned disclosed method cannot be completely applied. When the slewing bearing is dismounted, the dismounting efficiency needs to be improved, and the bolts with different distribution need to be dismounted. SUMMARY

[0004] The present application provides a dismounting device for slewing bearing of portal crane, which solves the problem of improving the dismounting efficiency and adapting to the dismounting of bolts with different distribution in the related art.

[0005] The technical scheme of the present application is as follows:

[0006] A dismounting device for slewing bearing of portal crane, comprising

[0007] a main housing,

[0008] a main shaft arranged on the main housing,

[0009] a main gear rotatably arranged on the main shaft,

[0010] a driving device for driving the main gear to rotate,

[0011] a first connecting rod and a second connecting rod, the first connecting rod and the second connecting rod are respectively rotatably connected with the main shaft,

[0012] a dismounting assembly, two sets of the dismounting assembly are respectively installed on the first connecting rod and the second connecting rod, the dismounting assembly comprises

[0013] a first gear, the first gear is engaged with the main gear, the rotation axis of the first gear is parallel to the rotation axis of the main gear,

[0014] a rotating screw seat, the rotating screw seat is matched with the bolt head, the first gear drives the rotating screw seat to rotate,

[0015] wherein, the first gear of the dismounting assembly installed on the first connecting rod is rotatably connected with the first connecting rod, the first gear of the dismounting assembly installed on the second connecting rod is rotatably connected with the second connecting rod.

[0016] As a further technical solution, the dismounting assembly further comprises

[0017] a one-way bearing, the inner ring of the one-way bearing has a key groove, the end face of the first gear is coaxially fixed with the one-way bearing,

[0018] the rotating screw seat comprises a rotating seat and a butt joint shaft, the rotating seat is matched with the bolt head for driving the bolt head to rotate to realize the dismounting of the bolt, the butt joint shaft is insertedly matched with the inner ring of the one-way bearing and is clamped with the key groove.

[0019] As a further technical solution, the rotating seat has an upper opening and a side opening, the rotating seat is a hexagonal structure, two adjacent sides are removed to form the side opening, and the bolt head enters the rotating seat from the upper or side.

[0020] As a further technical solution, the rotating screw seat further comprises

[0021] a magnetic suction head, the magnetic suction head is arranged at the lower part of the butt joint shaft, and the magnetic suction head is magnetically connected with the corresponding first connecting rod or the corresponding second connecting rod.

[0022] As a further technical solution, the driving device comprises

[0023] a second gear and a third gear, the second gear is arranged on the main gear, the third gear is rotatably arranged on the main shell, the axis of the third gear has an inner hexagonal hole, the axis of the third gear and the axis of the second gear are vertically arranged, and the third gear is engaged with the second gear.

[0024] As a further technical solution, the driving device further comprises

[0025] An electric drill, a driving end of the electric drill is inserted into the inner hexagonal hole for driving the main gear to rotate.

[0026] As a further technical solution, it further comprises

[0027] Two housings, each of the two housings is arranged on the first connecting rod and the second connecting rod, and each of the two housings covers the outside of the two first gears.

[0028] As a further technical solution, it further comprises

[0029] A handle, the handle is arranged on the main shell.

[0030] A method for using a gantry crane slewing bearing dismounting device to simultaneously dismount two bolts.

[0031] The working principle and beneficial effects of the present application are as follows:

[0032] 1、In the present application, two first gears are respectively engaged with the main gear for transmission, and each drives a rotating socket to rotate, the rotating socket is matched with the bolt head structure, and the two rotating sockets simultaneously rotate the two bolts, thereby improving the work efficiency. BRIEF DESCRIPTION OF DRAWINGS

[0033] The present application will be further described in detail below in combination with the drawings and specific embodiments.

[0034] Figure 1 It is a schematic diagram of the three-dimensional structure of the present application;

[0035] Figure 2 It is a schematic diagram of the bottom view structure of the present application;

[0036] Figure 3 It is a schematic diagram of the structure of the present application without the housing and the main shell;

[0037] Figure 4 It is a schematic diagram of the disassembly structure of the present application; Figure 3

[0038] Figure 5 ​The schematic diagram of the rotating screw seat and the one-way bearing structure of the present application is shown in the figure;

[0039] Figure 6 The schematic diagram of the rotating screw seat structure of the present application is shown in the figure;

[0040] Figure 7 The schematic diagram of the main machine shell structure of the present application is shown in the figure;

[0041] Figure 8 The schematic diagram of the two rotating screw seats in the far away state of the present application is shown in the figure;

[0042] Figure 9 The schematic diagram of the two rotating screw seats in the close state of the present application is shown in the figure;

[0043] In the figure, 1, main machine shell; 2, main shaft; 3, main gear; 4, first connecting rod; 5, second connecting rod; 6, first gear; 7, rotating screw seat; 8, one-way bearing; 9, keyway; 10, rotating seat; 11, butt joint shaft; 12, upper opening; 13, side opening; 14, magnetic suction head; 15, driving device; 16, second gear; 17, third gear; 18, internal hexagonal hole; 19, cover shell; 20, handle. DETAILED DESCRIPTION

[0044] The technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor are within the scope of protection of the present application.

[0045] As shown in the figure, the embodiment provides a dismounting device for the slewing bearing of a portal crane, which comprises Figures 1-9

[0046] The main machine shell 1,

[0047] The main shaft 2 is arranged on the main machine shell 1,

[0048] The main gear 3 is rotationally arranged on the main shaft 2,

[0049] The driving device 15 drives the main gear 3 to rotate,

[0050] The first connecting rod 4 and the second connecting rod 5 are respectively rotationally connected with the main shaft 2,

[0051] The dismounting assembly has two groups, and the two groups of dismounting assemblies are respectively arranged on the first connecting rod 4 and the second connecting rod 5, and the dismounting assembly comprises

[0052] ​The first gear 6 is engaged with the main gear 3, and the rotation axis of the first gear 6 is parallel to the rotation axis of the main gear 3.

[0053] The rotating screw seat 7 is matched with the bolt head, and the first gear 6 drives the rotating screw seat 7 to rotate.

[0054] The first gear 6 of the dismounting assembly mounted on the first connecting rod 4 is rotationally connected with the first connecting rod 4, and the first gear 6 of the dismounting assembly mounted on the second connecting rod 5 is rotationally connected with the second connecting rod 5.

[0055] In the embodiment, the two first gears 6 are engaged with the main gear 3 respectively to drive one rotating screw seat 7 to rotate respectively, the rotating screw seat 7 is matched with the bolt head structure, the two rotating screw seats 7 simultaneously rotate the two bolts to improve the work efficiency. Meanwhile, the first connecting rod 4 and the second connecting rod 5 are rotationally connected with the main shaft 2 respectively, when the first connecting rod 4 and the second connecting rod 5 rotate around the main shaft 2, the two first gears 6 can rotate around the main gear 3 in the circumferential direction while maintaining the gear engagement transmission, the two first gears 6 can realize the adjustment of the distance therebetween, and can adapt to the adjustment of the distribution distance of different bearings, and the adjustment is convenient, fast, efficient, has a large adjustment range, and has strong adaptability; the driving device 15 is used for driving the main gear 3 to rotate to improve the work efficiency.

[0056] Further, the dismounting assembly further comprises

[0057] The one-way bearing 8 has a key groove 9 in the inner ring, and the end surface of the first gear 6 is coaxially and fixedly provided with the one-way bearing 8,

[0058] The rotating screw seat 7 comprises a rotating seat 10 and a butt joint shaft 11, the rotating seat 10 is matched with the bolt head to drive the bolt head to rotate to realize the dismounting of the bolt, and the butt joint shaft 11 is matched with the inner ring of the one-way bearing 8 and is clamped with the key groove 9.

[0059] In this embodiment, the setting of the one-way bearing 8 facilitates the adjustment of the alignment state of the rotating seat 10, improves adaptability and use efficiency. For example, when the bolt is a hexagonal bolt, the rotating seat 10 is also in the form of a matching hexagon, and the two achieve model matching and plug-in butt joint. Then the rotating seat 10 can drive the bolt to rotate. However, due to the tightening state of the bolt, the position form of the hexagonal structure of the bolt head may not be uniform, so the alignment form of the rotating seat 10 needs to correspond to the bolt head. Therefore, the rotating seat 10 needs to be conveniently and quickly rotated. The one-way bearing 8 has the characteristics of one-way rotation and reverse locking, and can realize one-way transmission by using this characteristic. For example, the butt joint shaft 11 is connected with the inner ring of the one-way bearing 8, and the rotating seat 10 rotates synchronously with the inner ring of the one-way bearing 8. In the figure, it is assumed that the counterclockwise rotation direction of the inner ring is the direction in which the inner ring and the outer ring can rotate. Therefore, the clockwise rotation of the outer ring relative to the inner ring is also a rotatable direction. The outer ring rotates counterclockwise relative to the inner ring, which is locked. The outer ring and the inner ring are relatively stationary. Therefore, when the outer ring of the one-way bearing 8 is fixedly arranged on the first gear 6, the inner ring can freely rotate counterclockwise. Manually rotating the rotating seat 7 counterclockwise can be used to quickly adjust the alignment state of the rotating seat 7, so that it is completely aligned with the bolt head. Then, the rotating seat 7 is driven to rotate by the first gear 6, and the locked rotation direction can be used. (The one-way bearing 8 is equivalent to a fixed connection in the locked direction). In the figure, the first gear 6 rotates counterclockwise, the outer ring of the one-way bearing 8 rotates counterclockwise, the one-way bearing 8 is in a locked state, and the outer ring and the inner ring are relatively stationary. Therefore, the first gear 6 can transmit the rotation of the rotating seat 7 through the one-way bearing 8, and finally realize the rotation of the rotating seat 10 to drive the bolt to be disassembled.

[0060] Further, the rotating seat 10 has an upper opening 12 and a side opening 13. The rotating seat 10 is a hexagonal structure, and two adjacent sides are removed to form a side opening 13 for the bolt head to enter the rotating seat 10 from above or from the side.

[0061] In this embodiment, when the bolt head is a hexagonal structure, the rotating seat 10 has a corresponding structure with a hexagonal groove, which is matched with the bolt. The upper side of the rotating seat 10 has an upper opening 12, which facilitates the insertion of the bolt head from below and the plug-in alignment with the bolt head. The side of the rotating seat 10 has a side opening 13, so that the bolt can enter the rotating seat 10 from the horizontal direction, realize the alignment of the rotating seat 10 with the bolt head, and the rotating seat 10 still has enough side to cooperate with the bolt head to realize the screwing operation. When the bolt head is an internal hexagonal structure, the rotating seat 10 is a matching hexagonal boss, and does not involve the upper opening 12 and the side opening 13 structure.

[0062] Further, the rotating seat 7 also includes

[0063] The magnetic suction head 14 is arranged at the lower part of the docking shaft 11, and the magnetic suction head 14 is in magnetic suction connection with the corresponding first connecting rod 4 or the corresponding second connecting rod 5.

[0064] In the embodiment, the rotating screw seat 7 is connected with the one-way bearing 8 through clamping, and the rotating screw seat 7 is convenient to replace and adapt to different models, so that the diameter of the connecting shaft and the one-way bearing 8 can have a certain gap, the clamping of the key groove 9 can realize the transmission of rotation, and the magnetic suction head 14 is arranged, so that the rotating screw seat 7 can be positioned conveniently, falling during use is avoided, and replacement is also convenient.

[0065] Further, the driving device 15 comprises

[0066] The second gear 16 is arranged on the main gear 3, and the third gear 17 is rotationally arranged on the main shell 1, the axis of the third gear 17 has an internal hexagonal hole 18, the axis of the third gear 17 and the axis of the second gear 16 are arranged vertically, and the third gear 17 is in engagement with the second gear 16.

[0067] In the embodiment, the second gear 16 and the third gear 17 can be in transmission cooperation of face gears, realize the function of power-driven reversing, through the power input of the third gear 17, the second gear 16 reverses and transmits power, that is, the main gear 3 can be driven to rotate, and then the first gear 6 is driven to rotate. The third gear 17 is arranged on the main shell 1 and has an internal hexagonal hole 18, so that the plug-in connection with the external power is facilitated, and the power input is realized.

[0068] Further, the driving device 15 further comprises

[0069] The electric drill is in plug-in connection with the internal hexagonal hole 18 at the driving end, and is used to drive the main gear 3 to rotate. The electric drill is an existing device, and the rotation connection between the hexagonal head and the internal hexagonal hole 18 is realized. It is a conventional technical means, and the specific structure of the electric drill and the connection mode are not demonstrated in the application.

[0070] In the embodiment, the electric drill outputs power and transmits the power through the connection of the internal hexagonal hole 18. Compared with manual rotation, the efficiency can be greatly improved, time and labor can be saved, and the reversing transmission of the second gear 16 and the third gear 17 makes the power input side horizontally operable. When the bolt is disassembled between the main part and the separation part of the crane, the space utilization is more reasonable, the operator is located on the outer side of the slewing bearing, and the application is located below the bolt, avoiding the occupation space below the main part.

[0071] Further, the driving device 15 further comprises

[0072] The cover 19 has two cover 19 respectively arranged on the first connecting rod 4 and the second connecting rod 5, and the two cover 19 are respectively covered outside the two first gear 6.

[0073] In the embodiment, the cover 19 is covered outside the first gear 6, and the cover 19 can protect the first gear 6. The cover 19 has a gap on the side surface, and the gap corresponds to the meshing transmission space of the gear. The main gear 3 and the second gear 16 and the third gear 17 are partially protected by the main shell 1.

[0074] Further, the device further comprises

[0075] The handle 20 is arranged on the main shell 1.

[0076] In the embodiment, the handle 20 can be arranged below the main shell 1, so that the operator can conveniently hold and position the handle 20.

[0077] Further, the application also provides a use method of the dismounting device of the slewing bearing of the portal crane. The dismounting device of the slewing bearing of the portal crane is used to simultaneously dismount the two bolts.

[0078] In the embodiment, in use, the first connecting rod 4 and the second connecting rod 5 are first manually adjusted to correspond to the spacing positions of the two rotating seats 10 and the two bolt heads. The adjusting of the alignment mode of the rotating seat 10 can be adjusted according to the actual alignment state. The rotating seat 10 is completely matched with the bolt head, and then the rotating seat 10 is inserted and aligned with the bolt head. Finally, the rotating seat 10 is rotated by the electric drill, and the two bolts are simultaneously dismounted.

[0079] The above is only a preferred embodiment of the application, and is not used to limit the application. Any modification, equivalent replacement, improvement, etc. within the spirit and principle of the application shall be included in the protection scope of the application.

Claims

1. A portal crane slewing bearing dismounting apparatus, characterized in that, Comprising a main shell (1), a main shaft (2) arranged on the main shell (1), a main gear (3) rotatably arranged on the main shaft (2), a driving device (15) for driving the main gear (3) to rotate, a first connecting rod (4) and a second connecting rod (5) respectively rotatably connected with the main shaft (2), two sets of dismounting assemblies, each of which is arranged on the first connecting rod (4) or the second connecting rod (5), and each of which comprises a first gear (6) engaged with the main gear (3), and the rotation axis of the first gear (6) is parallel to the rotation axis of the main gear (3), a rotating screw seat (7) matched with the head of a bolt, and the first gear (6) drives the rotating screw seat (7) to rotate, wherein the first gear (6) of the dismounting assembly arranged on the first connecting rod (4) is rotatably connected with the first connecting rod (4), and the first gear (6) of the dismounting assembly arranged on the second connecting rod (5) is rotatably connected with the second connecting rod (5), a one-way bearing (8) with a key groove (9) in the inner ring, and the end surface of the first gear (6) is coaxially fixed with the one-way bearing (8), the rotating screw seat (7) comprises a rotating seat (10) and a butt joint shaft (11), the rotating seat (10) is matched with the head of a bolt to drive the head of the bolt to rotate and realize the dismounting of the bolt, the butt joint shaft (11) is matched with the inner ring of the one-way bearing (8) and is matched with the key groove (9), the rotating seat (10) has an upper opening (12) and a side opening (13), the rotating seat (10) is a hexagonal structure, two adjacent sides are removed to form the side opening (13), and the head of the bolt enters the rotating seat (10) from the upper side or the side.

2. A portal crane slewing bearing dismounting apparatus according to claim 1, characterized in that the rotating screw seat (7) further comprises a magnetic suction head (14) arranged at the lower part of the butt joint shaft (11), and the magnetic suction head (14) is magnetically connected with the corresponding first connecting rod (4) or the corresponding second connecting rod (5).

3. A portal crane slewing bearing dismounting apparatus according to claim 1, characterized in that the driving device (15) comprises a second gear (16) arranged on the main gear (3) and a third gear (17) rotatably arranged on the main shell (1), the shaft center of the third gear (17) has an inner hexagonal hole (18), the axis of the third gear (17) and the axis of the second gear (16) are arranged vertically, and the third gear (17) is engaged with the second gear (16).

4. A portal crane slewing bearing dismounting apparatus according to claim 3, characterized in that the driving device (15) further comprises an electric drill, and the driving end of the electric drill is matched with the inner hexagonal hole (18) to drive the main gear (3) to rotate.

5. A portal crane slewing bearing dismounting apparatus according to claim 1, characterized in that further comprising Cover (19), two of which are respectively arranged on the first connecting rod (4) and the second connecting rod (5), and two of which are respectively covered outside the two first gears (6).

6. A portal crane slewing bearing dismounting apparatus according to claim 1, characterized in that Also included Handle (20), which is arranged on the main shell (1).

7. A method of using a dismounting apparatus for a slewing bearing of a portal crane, characterized in that The two bolts are simultaneously disassembled by using the dismounting device of the portal crane slewing bearing according to any one of claims 1-6.

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