A large package rotary table bearing replacement tool and large package rotary table

Abstract

The utility model provides a kind of big package rotary table bearing replacement tool and big package rotary table, including two tool units, each tool unit includes guide rail, transport component, positioning lug, two jacking assemblies and multiple support pedestals, the top of jacking assembly is used to place the rotary table of big package rotary table, four jacking assemblies are used to place the cylinder of big package rotary table between, transport component includes telescopic mechanism and cushion block, two positioning lugs form positioning space between it. So through jacking assembly to lift big package rotary table to facilitate disassembly rotary bearing, further through transport component to pull out the rotary bearing to be replaced, under the action of positioning lug in the process of transportation, rotary bearing is clamped in positioning space, further connected by positioning lug, to be integrated with cushion block, improve the integrity when transporting, so as to speed up transportation, and side overturning situation does not appear, enhance transportation stability, to greatly improve processing efficiency.

Description

Technical Field

[0001] This utility model relates to the field of bearing replacement technology for large-scale rotary table, and in particular to a bearing replacement tooling and a large-scale rotary table. Background Technology

[0002] The ladle turret is a core piece of equipment connecting the steelmaking and continuous casting processes and transferring molten steel. Its normal operation is crucial to the continuity and efficiency of steel production. As a core component of the ladle turret, the installation accuracy of the bearings directly affects the smoothness of the equipment's operation and its service life. The ladle turret weighs nearly 400 tons, exceeding the maximum load capacity of the overhead crane, and its enormous weight poses a significant challenge to equipment maintenance and repair. New bearings weigh 9.3 tons and can only move parallel within a 20-centimeter gap, with the upper and lower end faces not contacting each other during movement, requiring extremely high installation accuracy. Furthermore, the upper part of the turret's rotating body has a rectangular structure, and the bearing's outer diameter is large, with a very small gap between it and the lifting support seat; relying solely on lifting would be very risky.

[0003] Traditionally, specialized lifting equipment and a double-crane bridge crane within a double span are used for lifting operations. This requires lifting throughout the entire process, but this approach means that the crane must serve the project and cannot be put into production, inevitably leading to production stoppages and poor safety performance. Existing technologies also use a structure that lifts the slewing table of the large package and then pulls out the slewing bearing by a trolley. However, this structure sometimes suffers from vibration during the pushing and pulling process, causing the slewing bearing to shift, tip over, and fall, thereby damaging components and causing losses.

[0004] Therefore, it is necessary to propose a bearing replacement fixture and a rotary table for a large package to solve or at least alleviate the above-mentioned defects. Utility Model Content

[0005] The main purpose of this utility model is to provide a tooling for replacing bearings on a large ladle rotary table and a large ladle rotary table, so as to solve the problem that the rotary bearing is prone to falling off during bearing replacement in the prior art.

[0006] To achieve the above objectives, this utility model provides a bearing replacement fixture for a large rotary table, comprising two fixture units arranged laterally opposite each other. Each fixture unit includes a guide rail, a transport assembly, a positioning protrusion, two lifting assemblies, and multiple support seats arranged longitudinally at intervals.

[0007] The guide rail is connected to the support base and has a track groove. The two lifting components are respectively connected to the two support bases located at the far end of the guide rail and are arranged on the outside of the guide rail. The lifting components are vertically telescopic. The top of the lifting components is used for placing the turntable of the large bag turntable. The space between the four lifting components is used for placing the cylinder of the large bag turntable.

[0008] The transport assembly includes a telescopic mechanism and a pad. The telescopic mechanism is connected to the track groove and spaced apart from the lifting assembly. The drive end of the telescopic mechanism is connected to the pad and is longitudinally telescopic. A positioning protrusion is formed on the top of the pad, and the positioning protrusion is recessed to form an arc-shaped groove. A positioning space is formed between the arc-shaped grooves of two positioning protrusions for placing the slewing bearing of the large bag turntable, and the positioning protrusion is connected to the slewing bearing of the large bag turntable.

[0009] Preferably, the arc-shaped groove is configured to match the rotary bearing of the large-scale rotary table.

[0010] Preferably, the lifting assembly includes a lifting mechanism and a support arm block. The lifting mechanism is connected to the support base, and the driving end of the lifting mechanism is connected to the support arm block and is vertically telescopically arranged.

[0011] Preferably, in each tooling unit, the two support arm blocks converge towards each other at one end facing the inside of the guide rail.

[0012] Preferably, the transport component further includes a stop block, which is attached to the end of the telescopic mechanism away from its own drive end. The guide rail has a through hole, and the support has a blind hole corresponding to the through hole. The bottom of the stop block protrudes downward to form a protruding post, which passes through the through hole to be engaged in the blind hole.

[0013] Preferably, the transport component further includes rollers mounted on the bottom of the pad and slidably connected to the track groove.

[0014] Preferably, the positioning protrusion has a bolt hole, which is connected to the positioning space. The positioning protrusion is connected to the rotary bearing of the large package rotary table by a bolt passing through the bolt hole.

[0015] Preferably, the positioning protrusion has a connecting groove recessed at one end near the telescopic mechanism, and the driving end of the telescopic mechanism is engaged in the connecting groove.

[0016] Preferably, the telescopic mechanism is a telescopic hydraulic cylinder, and the lifting mechanism is a hydraulic jack.

[0017] This application also provides a large package rotary table, including a rotary table, a cylindrical body, and a rotary bearing. The cylindrical body is connected to the rotary table, and the rotary bearing is detachably connected to the bottom end of the cylindrical body. It also includes the large package rotary table bearing replacement fixture as described above. The rotary table is placed on the lifting assembly of the large package rotary table bearing replacement fixture, and the cylindrical body is disposed between the four lifting assemblies. The disassembled rotary bearing is connected to the positioning protrusion.

[0018] Compared with the prior art, the present invention has the following beneficial effects:

[0019] This utility model provides a bearing replacement fixture for a large ladle rotary table and a large ladle rotary table. It includes two fixture units arranged laterally opposite each other. Each fixture unit includes a guide rail, a transport component, a positioning protrusion, two lifting components, and multiple longitudinally spaced support seats. The guide rail is connected to the support seats and has a rail groove. The two lifting components are respectively connected to the two support seats located at the far ends of the guide rail and are positioned on the outside of the guide rail. The lifting components are vertically extendable. The top of the lifting components... The rotary table for placing large packages is positioned between four lifting components, which are used to place the cylindrical body of the rotary table. The transport component includes a telescopic mechanism and a pad. The telescopic mechanism is connected to the track groove and spaced apart from the lifting components. The drive end of the telescopic mechanism is connected to the pad and is longitudinally telescopic. A positioning protrusion is formed on the top of the pad, and the positioning protrusion has an arc-shaped groove. The arc-shaped groove between two positioning protrusions forms a positioning space for placing the rotary bearing of the rotary table, and the positioning protrusion is connected to the rotary bearing of the rotary table. In this way, the rotary table is lifted by the lifting components to facilitate the removal of the rotary bearing. Then, the rotary bearing to be replaced is pulled out by the transport component. During transport, the rotary bearing is locked in the positioning space by the positioning protrusion, and further connected to the pad by the positioning protrusion, thus improving the overall integrity during transport. This speeds up transport, prevents tipping and falling, enhances transport stability, and significantly improves processing efficiency. Attached Figure Description

[0020] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.

[0021] Figure 1 This is a three-dimensional schematic diagram of the overall structure in one embodiment of the present utility model;

[0022] Figure 2 This is a three-dimensional schematic diagram of the overall structure of this utility model in an application scenario.

[0023] Figure 3 This is a partial schematic diagram of the slewing bearing assembly in one embodiment of the present invention;

[0024] Figure 4 This is a plan view of the overall structure in one embodiment of the present utility model;

[0025] Figure 5 This is a three-dimensional schematic diagram of the positioning protrusion in one embodiment of the present utility model;

[0026] Figure 6 This is a three-dimensional schematic diagram of the pad block in one embodiment of the present utility model;

[0027] Figure 7 This is a perspective view of the stop block in one embodiment of the present invention.

[0028] The purpose, features, and advantages of this utility model will be further explained in conjunction with the embodiments and with reference to the accompanying drawings.

[0029] Explanation of icon numbers:

[0030] 10. Tooling unit; 110. Guide rail; 111. Rail groove; 120. Transport component; 121. Telescopic mechanism; 122. Pad block; 123. Stop block; 124. Roller; 130. Positioning protrusion; 131. Arc groove; 132. Bolt hole; 133. Connecting groove; 140. Lifting component; 141. Lifting mechanism; 142. Support arm block; 150. Support bracket; 20. Large ladle turntable; 210. Turntable; 220. Cylinder; 230. Slewing bearing. Detailed Implementation

[0031] It should be understood that the specific embodiments described herein are merely illustrative of the present invention and are not intended to limit the present invention.

[0032] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0033] It should be noted that all directional indicators (such as up, down, left, right, front, back, etc.) in this utility model embodiment are only used to explain the relative positional relationship and movement of each component in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indicator will also change accordingly.

[0034] Furthermore, the use of terms such as "first" and "second" in this utility model is for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. Additionally, the technical solutions of the various embodiments can be combined with each other, but only on the basis of being achievable by those skilled in the art. When the combination of technical solutions is contradictory or impossible to implement, such a combination of technical solutions should be considered non-existent and not within the scope of protection claimed by this utility model.

[0035] Please see the appendix Figure 1-7 This utility model provides an embodiment of a bearing replacement fixture for a large rotary table, comprising two fixture units 10 arranged laterally opposite each other. Each fixture unit 10 includes a guide rail 110, a transport component 120, a positioning protrusion 130, two lifting components 140, and multiple support seats 150 arranged longitudinally at intervals. First, it should be noted that in this application, "longitudinal" refers to the extension direction of the guide rail 110, and "lateral" refers to the width direction of the guide rail 110. Please refer to the accompanying drawings for details; the specific design is as follows:

[0036] The guide rail 110 is connected to the support base 150, and the guide rail 110 has a track groove 111. Two lifting assemblies 140 are respectively connected to the two support bases 150 located at the far ends of the guide rail 110 and are disposed on the outer side of the guide rail 110. The lifting assemblies 140 are vertically telescopically configurable. The top of the lifting assembly 140 is used to place the turntable 210 of the large bag turntable 20, and the space between the four lifting assemblies 140 is used to place the cylinder 220 of the large bag turntable 20. The transport assembly 120 includes a telescopic mechanism 1. 21 and pad 122, the telescopic mechanism 121 is connected in the track groove 111 and spaced apart from the lifting assembly 140, the drive end of the telescopic mechanism 121 is connected to the pad 122 and is telescopically extendable in the longitudinal direction, the positioning protrusion 130 is formed on the top of the pad 122, the positioning protrusion 130 is recessed to form an arc groove 131, a positioning space is formed between the arc grooves 131 of the two positioning protrusions 130 for placing the rotary bearing 230 of the large bag rotary table 20, and the positioning protrusion 130 is connected to the rotary bearing 230 of the large bag rotary table 20.

[0037] Specifically, the bearing replacement fixture for the large bag turntable in this application includes two fixture units 10 arranged laterally opposite each other to support the large bag turntable 20. Each fixture unit 10 includes a guide rail 110, a transport component 120, a positioning protrusion 130, two lifting components 140, and multiple support seats 150 arranged longitudinally at intervals. The support seats 150 support the guide rail 110 and the lifting components 140. The guide rail 110 is used for installing the transport component 120. The guide rail 110 is used to define the transport trajectory of the transport component 120. The drive end of the transport component 120 extends and retracts along the extension direction (longitudinal) of the guide rail 110 to pull out the disassembled slewing bearing 230 longitudinally for replacement. The lifting component 140 is used to lift the large package turntable 20, so that the slewing bearing 230 can be easily disassembled after being lifted. The positioning protrusion 130 is used to position the slewing bearing 230. Since the slewing bearing 230 is large, this is to prevent the slewing bearing 230 from shifting and falling off during transport.

[0038] In this embodiment, the lifting component 140 is located at the very end of the guide rail 110, so that the entire large bag turntable 20 is also located at the very end of the guide rail 110. In a preferred embodiment, each tooling unit 10 has four support supports 150, so the two lifting components 140 of each tooling unit 10 are respectively located above the last two support supports 150. Thus, by combining the two tooling units 10, four lifting components 140 arranged in a matrix are provided at the very end of the guide rail 110. Considering that in the large bag turntable 20, the turntable 210 is connected to the cylinder 220, the turntable 210 is placed on top of the lifting components 140, while the cylinder 220 is situated between the side walls of the four lifting components 140. The telescopic mechanism 121 is spaced apart from the lifting components 140 to form sufficient space for pulling out the slewing bearing 230. Based on the embodiments of this application, as shown in the attached... Figure 1 As shown in the figure, the telescopic mechanism 121 can be set at the third support 150 counting from the end.

[0039] In detail, the transport assembly 120 includes a telescopic mechanism 121 and a pad 122. The telescopic mechanism 121 is used to drive the pad 122 to move, preferably using a telescopic hydraulic cylinder. The pad 122 is used to support the slewing bearing 230, so that the slewing bearing 230 moves with the pad 122 under its action. The positioning protrusion 130 protrudes from the top of the pad 122 and is formed by an integral molding process. Considering the shape suitable for the slewing bearing 230, the positioning protrusion 130 has an arc-shaped groove 131, thus forming a positioning space between the arc-shaped grooves 131 of two opposing positioning protrusions 130 for the slewing bearing 230 to be engaged. The positioning protrusion 130 is designed to act as a stop for the slewing bearing 230 on the side, preventing the slewing bearing 230 from shifting or tipping over. Furthermore, the positioning protrusion 130 is also connected to the slewing bearing 230, so that the slewing bearing 230 and the entire pad 122 are integrated, thereby having better overall integrity during transportation and enhancing the stability of the structure during transportation. Preferably, bolt holes 132 can be opened on the positioning protrusion 130, and the bolt holes 132 are connected to the positioning space. After the bolt passes through the bolt holes 132, it can be connected to the slewing bearing 230 in the positioning space, so as to stably fix the slewing bearing 230 between the two oppositely arranged pads 122 (positioning protrusions 130).

[0040] In a preferred embodiment of this utility model, the arc-shaped groove 131 is matched with the rotary bearing 230 of the large package rotary table 20.

[0041] It should be noted that the matching setting here means that the curvature of the arc groove 131 and the slewing bearing 230 are consistent, so that the degree of bending is the same, so that when the slewing bearing 230 is installed in the positioning space, its two ends along the lateral direction can be locked in the positioning protrusion to improve the compatibility and make full use of the side stop function of the positioning protrusion.

[0042] In a preferred embodiment of the present invention, the lifting assembly 140 includes a lifting mechanism 141 and a support block 142. The lifting mechanism 141 is connected to the support base 150, and the driving end of the lifting mechanism 141 is connected to the support block 142 and is vertically telescopically arranged.

[0043] It should be noted that the lifting mechanism 141 is used to drive the support arm block 142 to move vertically. Preferably, a hydraulic jack can be used. The support arm block 142 is used for placing the turntable 210, and the space between the four support arm blocks 142 is used for inserting the cylinder 220.

[0044] In a preferred embodiment of the present invention, in each tooling unit 10, the two support arm blocks 142 are brought closer together at one end facing the inner side of the guide rail 110.

[0045] It is worth noting that since the cylinder 220 of the large package rotary table 20 is usually cylindrical to match the rotary bearing 230, the two support arm blocks 142 are inclined at the ends facing the inner side of the guide rail 110. The two support arm blocks 142 in the other tooling unit 10 are also inclined in the same way. Thus, the inner ends of the four support arm blocks 142 (the ends facing the inner side of the guide rail 110) are all set towards the cylinder 220 to form multiple inclined surfaces, which are more suitable for placing in close contact with the cylindrical surface.

[0046] In a preferred embodiment of the present invention, the transport component 120 further includes a stop block 123, which is attached to the end of the telescopic mechanism 121 away from its own driving end. The guide rail 110 has a through hole, and the support 150 has a blind hole corresponding to the through hole. The bottom of the stop block 123 protrudes downward to form a protruding post, which passes through the through hole to be engaged in the blind hole.

[0047] It is worth noting that the stop block 123 supports the telescopic mechanism 121, acting as a support to hold the telescopic mechanism 121 in place, thus facilitating telescopic movement. The stop block 123 has a downward protruding structure forming a convex post, which passes through the through hole of the guide rail 110 and extends into the blind hole of the support 150, thereby achieving a longitudinal fixation effect. Considering that the telescopic mechanism 121 is located at the third support 150 from the end, the stop block 123 is attached to the telescopic mechanism 121, and the blind hole is opened at the third support 150 from the end.

[0048] Furthermore, the transport assembly 120 also includes a roller 124, which is mounted on the bottom of the pad 122 and is slidably connected to the track groove 111.

[0049] It should be noted that the roller 124 is used to reduce frictional resistance and improve transportation efficiency.

[0050] Furthermore, the positioning protrusion 130 has a recessed connecting groove 133 at one end near the telescopic mechanism 121, and the driving end of the telescopic mechanism is engaged in the connecting groove 133.

[0051] It is understood that the connecting groove allows the drive end of the telescopic mechanism 121 to be connected by a snap-fit ​​connection, snapping into this connecting groove 133 and connecting with the entire pad block 122 (positioning protrusion 130), thereby facilitating force-driven dragging. For details, please refer to the appendix. Figure 5 .

[0052] This application also provides a large package rotary table 20, including a rotary table 210, a cylindrical body 220, and a rotary bearing 230. The cylindrical body 220 is connected to the rotary table 210, and the rotary bearing 230 is detachably connected to the bottom end of the cylindrical body 220. It also includes the bearing replacement fixture of the large package rotary table 20 as described above. The rotary table 210 is placed on the lifting assembly 140 of the bearing replacement fixture of the large package rotary table 20, and the cylindrical body 220 is disposed between the four lifting assemblies 140. The disassembled rotary bearing 230 is connected to the positioning protrusion 130.

[0053] Understandably, during operation, the large bag turntable 20 is first hoisted onto this device, and the cylinder 220 is aligned and inserted between the four lifting components 140 (support arm blocks 142). The turntable 210 is then positioned above the four lifting components 140 (support arm blocks 142). It should be noted that, considering the large size and weight of the entire large bag turntable 20, the support arm blocks 142 and the turntable 210 can be welded together to prevent accidents. They can be cut when disassembly is required. After stable placement, the entire large bag turntable 20 is lifted using the lifting mechanism 141. Then, the slewing bearing 230 at the bottom of the cylinder 220 is removed, causing the slewing bearing 230 to fall into the positioning space between the two positioning protrusions 130. The 130 is stopped by a locking device, and then a bolt is passed through the bolt hole 132 of the positioning protrusion 130 until the bolt hole 132 extends into the hole of the slewing bearing 230 itself, thus achieving a connection. Then, the telescopic mechanism 121 is driven to pull out the slewing bearing 230 along with the pad 122. After removing the bolt and replacing or repairing it, the new slewing bearing 230 is placed in the positioning space and connected with bolts. Then, the telescopic mechanism 121 is driven to push the slewing bearing 230 into the bottom of the turntable 210 for installation. By using the slewing bearing 230 of the auxiliary package turntable 20 of this application, the replacement efficiency is greatly improved, and the slewing bearing 230 will not easily fall off, ensuring transportation stability and safety, and preventing damage to components and increased costs.

[0054] It is worth mentioning that, when pulled out, the drive end of the telescopic mechanism 121, which is engaged in the connecting groove 133, pulls out the entire pad 122 (and the integrally formed positioning protrusion 130), thereby pulling out the rotary bearing 230 connected in the positioning protrusion 130. When reinstalling the replaced rotary bearing 230, the pad 122 can be pushed out by pushing. Thus, the push-pull method is used for both pushing out and pushing back. In another embodiment, the guide rail 110 can be extended at the end of this application and a support 150 can be provided. A stop 123, a pad 122, a telescopic mechanism 121, etc. can be provided at this extended end. Thus, when pushing back, the rotary bearing 230 can be pushed back using the structure shown in Figure 2. When the rotary bearing 230 needs to be replaced, the rotary bearing 230 can be pushed out by pushing at the guide rail 110 and support 150 at the extended end (not shown in this figure). Thus, the push-pull method can be used for both pushing out and pushing back. Those skilled in the art can set it according to actual needs.

[0055] The above are merely preferred embodiments of this utility model and do not limit the patent scope of this utility model. Any equivalent structural or procedural transformations made based on the description and drawings of this utility model, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of this utility model.

Claims

1. A large package slewing ring bearing replacement tooling characterized by, It includes two tooling units arranged laterally opposite each other. Each tooling unit includes a guide rail, a transport component, a positioning protrusion, two lifting components, and multiple support brackets arranged longitudinally at intervals. The guide rail is connected to the support base and has a track groove. The two lifting components are respectively connected to the two support bases located at the far end of the guide rail and are arranged on the outside of the guide rail. The lifting components are vertically telescopic. The top of the lifting components is used for placing the turntable of the large bag turntable. The space between the four lifting components is used for placing the cylinder of the large bag turntable. The transport assembly includes a telescopic mechanism and a pad. The telescopic mechanism is connected to the track groove and spaced apart from the lifting assembly. The drive end of the telescopic mechanism is connected to the pad and is longitudinally telescopic. A positioning protrusion is formed on the top of the pad, and the positioning protrusion is recessed to form an arc-shaped groove. A positioning space is formed between the arc-shaped grooves of two positioning protrusions for placing the slewing bearing of the large bag turntable, and the positioning protrusion is connected to the slewing bearing of the large bag turntable.

2. The large pack turntable bearing replacement tooling of claim 1, wherein, The arc-shaped groove is configured to match the rotary bearing of the large-scale rotary table.

3. The large pack turntable bearing changeout tooling of claim 1, wherein, The lifting assembly includes a lifting mechanism and a support arm block. The lifting mechanism is connected to the support base, and the drive end of the lifting mechanism is connected to the support arm block and is vertically extendable.

4. The large pack revolving table bearing replacement tooling of claim 3, wherein, In each of the tooling units, the two support arm blocks converge towards each other at one end facing the inside of the guide rail.

5. The large pack revolving table bearing changeout tooling of claim 1, wherein, The transport component also includes a stop block, which is attached to the end of the telescopic mechanism away from its own drive end. The guide rail has a through hole, and the support has a blind hole corresponding to the through hole. The bottom of the stop block protrudes downward to form a protruding post, which passes through the through hole to be engaged in the blind hole.

6. The large pack revolving table bearing changeout tooling of claim 1, wherein, The transport component also includes rollers mounted on the bottom of the pad and slidably connected to the track groove.

7. The large pack revolving table bearing changeout tooling of claim 2, wherein, The positioning protrusion has a bolt hole, which is connected to the positioning space. The positioning protrusion is connected to the rotary bearing of the large package rotary table by a bolt passing through the bolt hole.

8. The large pack revolving table bearing changeout tooling of claim 1, wherein, The positioning protrusion has a recessed connecting groove at one end near the telescopic mechanism, and the driving end of the telescopic mechanism is engaged in the connecting groove.

9. The large pack revolving table bearing replacement tooling of claim 3, wherein, The telescopic mechanism uses a telescopic hydraulic cylinder, and the lifting mechanism uses a hydraulic jack.

10. A large ladle turret comprising a turret, a shell connected to the turret, and a slew bearing removably connected to a bottom end of the shell, characterized by, It also includes the large bag rotary table bearing replacement fixture as described in any one of claims 1-9, wherein the rotary table is placed on the lifting assembly of the large bag rotary table bearing replacement fixture, the cylinder is disposed between the four lifting assemblies, and the disassembled rotary bearing is connected to the positioning protrusion.

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