Rotary table device convenient for long-distance disassembly and assembly
By designing a rotary table device that is easy to disassemble and assemble over long distances, and utilizing a rotary fixed base, a support transition plate, and a C-type fixing clamp, the problem of difficult maintenance of the rotary table device in a radiation environment was solved, achieving safe and efficient disassembly and installation, and reducing personnel radiation risks and production downtime losses.
Patent Information
- Application Number
- CN202610227164.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2026-02-26
- Publication Date
- 2026-05-15
AI Technical Summary
When the existing rotary table equipment experiences slewing bearing jamming or insufficient lubrication, manual entry into the radiant heat chamber is required for maintenance, leading to personnel injury and equipment failure, resulting in work stoppages and production shutdowns.
A rotary table device for easy long-distance disassembly and assembly was designed. It adopts a rotary fixed base, a rotary support transition plate, a rotary disc and a C-type fixing clamp. It uses an electric wrench and a lifting tool to achieve long-distance disassembly and installation, reducing manual operation.
It enables rapid disassembly and installation of the rotary table, reduces the risk of radiation exposure to personnel, improves maintenance efficiency, and avoids equipment scrapping and production stoppage losses.
Smart Images
Figure CN122035688A_ABST
Abstract
Description
Technical Field
[0001] This invention relates to the field of rotary table equipment technology, and in particular to a rotary table device that is easy to assemble and disassemble over a long distance. Background Technology
[0002] Existing rotary table assemblies typically use a single bolt to secure the slewing base and the slewing disc to the inner and outer rings of the slewing bearing. When the slewing bearing jams and cannot rotate, or when lubrication needs to be replenished, it must be quickly disassembled and lifted out of the radioactive hot chamber for repair or replacement. However, manual entry into the radioactive hot chamber for repairs poses a significant health risk. Therefore, in many cases, when the rotary table assembly inside the hot chamber is damaged, manual entry for repair is not permitted, resulting in the complete scrapping of the rotary table assembly, production stoppage, and substantial losses. This application provides a rotary table assembly that facilitates remote disassembly and assembly to solve the aforementioned problems. Summary of the Invention
[0003] The main objective of this invention is to address the problems in existing technologies where rotary table devices typically use a single ring of screws to fix the rotating base and the rotating disc to the inner and outer rings of the slewing bearing, respectively. When the slewing bearing becomes stuck and unable to rotate, or when lubrication needs to be replenished, it needs to be quickly disassembled and lifted out of the radioactive hot chamber for repair or replacement. However, manual entry into the radioactive hot chamber for repairs can cause significant harm. Therefore, in many cases, when the rotary table device inside the hot chamber is damaged, manual entry for repair is not permitted, resulting in the complete scrapping of the rotary table device, production stoppage, and substantial losses.
[0004] This invention provides a rotary table device that facilitates remote assembly and disassembly, the rotary table device comprising:
[0005] The system comprises a slewing fixed base, a slewing bearing transition plate, a slewing bearing, a large slewing disc, and C-type fixing clamps. The top of the slewing fixed base is provided with an upper boss, and a positioning keyway is opened on the upper boss. The slewing transition support plate is set at the top of the slewing fixed base. The slewing fixed base is fixed to the ground with anchor bolts. The slewing bearing is nested on the slewing bearing transition plate. The large slewing disc is set at the upper end of the slewing bearing and is fixedly connected to the slewing bearing. The C-type fixing clamps are evenly distributed on the slewing bearing transition plate.
[0006] Optionally, the bottom of the slewing bearing transition plate is provided with two retaining plates that mate with the positioning keyway. The bottom of the retaining plates is provided with guide slopes and rounded corners. The outer ring of the slewing bearing transition plate is provided with a ring of first bolt holes, which are used to fix with the inner ring of the slewing bearing. The bottom inner ring of the slewing bearing transition plate is provided with a ring of positioning stop. The top of the slewing bearing transition plate is provided with a nested ring that mates with the positioning of the slewing bearing.
[0007] Optionally, the outer ring of the slewing bearing transition plate is further provided with a first positioning pin hole, which is used for positioning by a positioning pin and a slewing fixed base, and the positioning pin is fixedly set on the slewing fixed base.
[0008] Optionally, the slewing bearing is nested on the slewing bearing transition plate and cooperates with the nested ring on the slewing bearing transition plate. The slewing bearing is fixed to the slewing bearing transition plate by fasteners. The slewing disc is set on the slewing bearing and fixed to the slewing bearing by fasteners.
[0009] Optionally, the locating pin is a cylindrical pin with a guide bevel at the top.
[0010] Optionally, the number of C-type fixing clamps is four; the C-type fixing clamps are fixed to the transition plate of the slewing bearing.
[0011] Optionally, the slewing disc is provided with several lifting lugs for easy lifting; the lifting lugs are evenly distributed around the circumference of the slewing disc, and the lifting lugs are used to lift the slewing bearing assembly as a whole using a crane hoist.
[0012] This application provides a rotary table device that facilitates remote disassembly and assembly. Compared with traditional manual operation, the material positioning and assembly time is shorter and the risk factor is lower. The rotary table can be quickly disassembled and reassembled without personnel entering the radioactive hot chamber, which greatly reduces the risk of radiation exposure for personnel entering the hot chamber for maintenance and improves maintenance efficiency. Attached Figure Description
[0013] Figure 1 This is an overall schematic diagram of the present invention.
[0014] Figure 2 This is a cross-sectional schematic diagram of the present invention.
[0015] Figure 3 This is a structural diagram of the rotating fixed base.
[0016] Figure 4 This is a schematic diagram of the transition plate of the slewing bearing.
[0017] Figure 5 This is a cross-sectional view of the transition plate of the slewing bearing.
[0018] Figure 6 This is a schematic diagram of the C-type fixing clamp with the clamp plate not open.
[0019] Figure 7 This is a schematic diagram of the C-type fixing clamp with its clamp plate open.
[0020] Figure 8 This is a schematic diagram of an electric wrench operating a C-type fixing clamp.
[0021] Explanation of reference numerals in the attached figures: 1. Rotary disc; 2. C-type fixing clamp; 3. Rotary bearing; 4. Rotary bearing transition plate; 5. Locating pin; 6. Rotary fixing base; 7. Electric wrench; 8. Lifting lug; 9. Locating keyway; 10. Upper boss; 11. Clamping plate; 12. Locating stop; 13. Nested ring; 14. Clamping plate; 15. Spiral pair structure; 16. Locating pin hole. Detailed Implementation
[0022] This invention provides a rotary table device that facilitates long-distance assembly and disassembly, comprising: a rotary fixed base, a rotary bearing transition plate, a rotary bearing, a rotary disc, and C-type fixing clamps. The rotary fixed base has an upper boss on its top, with a positioning keyway on the upper boss. The rotary transition support plate is located at the top of the rotary fixed base. The rotary fixed base is fixed to the ground using anchor bolts. The rotary bearing is nested on the rotary bearing transition plate. The rotary disc is located at the upper end of the rotary bearing and is fixedly connected to it. The C-type fixing clamps are evenly distributed on the rotary bearing transition plate. The main objective of this invention is to address the problem in the prior art where rotary table devices typically use a single ring of screws to fix the rotary fixed base and rotary disc to the inner and outer rings of the rotary bearing, respectively. When the rotary bearing becomes stuck and cannot rotate, or when lubrication needs to be replenished, it needs to be quickly disassembled and lifted out of the radioactive hot chamber for repair or replacement. Manual entry into the radioactive hot chamber for repairs can cause significant harm to the body. Therefore, in many cases, when the rotary table device inside the hot chamber is damaged, manual entry for repair is not allowed, resulting in the complete scrapping of the rotary table device, shutdown and production stoppage, and significant losses.
[0023] The terms "first," "second," "third," "fourth," etc. (if present) in the specification, claims, and accompanying drawings of this invention are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate so that the embodiments described herein can be implemented in orders other than those illustrated or described herein. Furthermore, the terms "comprising" or "having" and any variations thereof are intended to cover a non-exclusive inclusion; for example, a process, method, system, product, or apparatus that comprises a series of steps or units is not necessarily limited to those steps or units explicitly listed, but may include other steps or units not explicitly listed or inherent to such processes, methods, products, or apparatus.
[0024] Example Reference manual attached Figure 1-8 This embodiment provides a rotary table device that is easy to assemble and disassemble over long distances, including: The rotary fixed base 6, rotary bearing transition plate 4, rotary bearing 3, rotary disc 1, and C-type fixing clamps 2 are provided. The top of the rotary fixed base 6 is provided with an upper boss 10, and the upper boss 10 is provided with a positioning keyway 9. The rotary transition support plate is set at the top of the rotary fixed base. The rotary fixed base 6 is fixed to the ground with anchor bolts. The rotary bearing 3 is nested on the rotary bearing transition plate 4. The rotary disc 1 is set at the upper end of the rotary bearing 3 and is fixedly connected to the rotary bearing 3. The C-type fixing clamps 2 are evenly distributed on the rotary bearing transition plate 4.
[0025] The bottom of the slewing bearing transition plate 4 is provided with two retaining plates 11 that cooperate with the positioning keyway 9. The bottom of the retaining plates 11 is provided with a guide slope and rounded corners. The outer ring of the slewing bearing transition plate 4 is provided with a ring of first bolt holes, which are used to fix with the inner ring of the slewing bearing 3. The bottom inner ring of the slewing bearing transition plate 4 is provided with a ring of positioning stop 12. The top of the slewing bearing transition plate 4 is provided with a nested ring 13 that is positioned and cooperates with the slewing bearing 3.
[0026] The outer ring of the slewing bearing transition plate 4 is also provided with a first positioning pin 5 hole, which is used for positioning by the positioning pin 5 and the slewing fixed base 6. The positioning pin 5 is fixedly set on the slewing fixed base 6.
[0027] The slewing bearing 3 is nested on the slewing bearing transition plate 4 and cooperates with the nested ring 13 on the slewing bearing transition plate. The slewing bearing 3 is fixed to the slewing bearing transition plate 4 by fasteners. The slewing disc 1 is set on the slewing bearing 3 and is fixed to the slewing bearing 3 by fasteners.
[0028] Positioning pin 5 is a cylindrical pin with a guide bevel at the top.
[0029] There are four C-type fixing clamps 2; the C-type fixing clamps 2 are fixed on the slewing bearing transition plate 4.
[0030] The slewing disc 1 is provided with several lifting lugs 8 for easy lifting; the lifting lugs 8 are evenly distributed around the circumference of the slewing disc 1, and the lifting lugs 8 are used to lift the slewing bearing 3 assembly as a whole by means of a crane lifting device.
[0031] This embodiment mainly includes a slewing fixed base 6, a slewing bearing transition plate 4, a slewing bearing 3, a slewing disc 1, a positioning pin 5, a C-type fixing clamp 2, and an electric wrench 7.
[0032] The slewing disc 1 is a planar slewing part. It has a ring of bolt holes near its inner diameter for fixed connection with the outer ring of bolt holes of the slewing bearing 3. Its upper surface has multiple lifting lugs 8, which facilitates lifting it together with other components during overall disassembly and assembly.
[0033] The C-type clamp 2 is a type of clamp that can open and close. (See attached instruction manual.) Figure 6 and 7 This fixture is used to clamp two components together. Its principle involves using a trapezoidal screw and nut to form a helical pair structure 15. An electric wrench 7 drives the screw to rotate, causing the nut to move up and down, which in turn drives the clamping plate 14 to open and close. The C-type clamp 2 has a hexagonal head, facilitating the insertion of the electric wrench 7 to rotate the screw in both directions.
[0034] Slewing bearing 3 is a mechanical component that conforms to national standards. It consists of inner and outer rings, rolling elements, etc. Slewing bearing is a large bearing that can withstand comprehensive loads and can simultaneously withstand large axial and radial loads and overturning moments.
[0035] The slewing bearing transition plate 4 is a component with special shape characteristics, as shown in the attached diagram of the instruction manual. Figure 4 The outer ring of the slewing bearing 3 has a ring of bolt holes for fixing to the inner ring of the slewing bearing 3. This component has two clamping plates 11, the bottom of which has guide slopes and rounded corners for circumferential coarse positioning during rapid positioning. The inner ring of this component also has a precision-sized positioning stop 12, which also has guide slopes and rounded corners, facilitating radial coarse and fine positioning during rapid positioning. In addition to the precision positioning stop 12 on the inner ring, it has a positioning pin hole for secondary circumferential fine positioning. The inner ring of the slewing bearing transition plate 4 has several evenly distributed bolt holes for fixing the C-type fixing clamp 2.
[0036] The rotating fixed base 6 is also a component with special shape characteristics (see...). Figure 3 It is permanently fixed to the ground with anchor bolts, mainly used to support the entire rotary table and achieve precise positioning and fixation of the components above it. It has two symmetrical locating keyways 9 and one locating pin hole 16 in its circumference. The locating keyways 9 are used to achieve rough circumferential positioning with the two retaining plates 11 on the rotary bearing transition plate 4 during installation; the locating pin hole 16 is used to install and fix the locating pin 5, achieving secondary fine circumferential positioning of the rotary bearing transition plate 4. The outer ring of the upper boss 10 of the rotary fixed base 6 is a precision positioning dimension, and the boss also has guide slopes and rounded corners, which facilitates guidance and precise radial positioning during the installation of the rotary bearing transition plate 4.
[0037] The positioning pin 5 is a cylindrical pin with a guide bevel at the top, which is used to achieve circumferential secondary precision positioning of the slewing bearing transition plate 4 and the slewing fixed base 6.
[0038] The electric wrench 7 is used to drive the C-type fixing clamp 2 to clamp and loosen the parts.
[0039] When the slewing bearing becomes stuck and cannot rotate, or when grease needs to be added, the entire slewing bearing assembly needs to be lifted out of the hot chamber. In this case, first use the electric wrench 7 to drive the C-type fixing clamps 2 in sequence to loosen the parts, and then use the lifting tool to hook the lifting lugs 8 on the slewing disc 1 to lift the upper part out of the hot chamber and enter the maintenance hot chamber for repair or replacement.
[0040] When the slewing bearing is repaired or replaced and you wish to return it to its original position, use a lifting device to hoist it into the hot chamber. With the assistance of a camera inside the hot chamber, roughly align the two clamping plates 11 of the slewing bearing transition plate 4 with the two positioning keyways 9 on the slewing fixed base 6. Then, slowly lower the entire hoisted assembly, allowing it to achieve precise positioning using its respective guiding and positioning features. When the hoisted assembly reaches the mounting surface on the slewing fixed base 6, remove the lifting device. Then, use an electric wrench to drive the C-type fixing clamps 2 on the slewing bearing transition plate 4 to clamp and fix the hoisted assembly to the slewing fixed base 6. The repositioning is now complete.
[0041] The above-described embodiments are only used to illustrate the technical solutions of the present invention, and are not intended to limit it. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.
Claims
1. A rotary table device that is easy to assemble and disassemble over a long distance, characterized in that, include: The system comprises a slewing fixed base, a slewing bearing transition plate, a slewing bearing, a large slewing disc, and C-type fixing clamps. The top of the slewing fixed base is provided with an upper boss, and a positioning keyway is opened on the upper boss. The slewing transition support plate is set at the top of the slewing fixed base. The slewing fixed base is fixed to the ground with anchor bolts. The slewing bearing is nested on the slewing bearing transition plate. The large slewing disc is set at the upper end of the slewing bearing and is fixedly connected to the slewing bearing. The C-type fixing clamps are evenly distributed on the slewing bearing transition plate.
2. The rotary table device for easy remote assembly and disassembly according to claim 1, characterized in that, The bottom of the slewing bearing transition plate is provided with two retaining plates that mate with the positioning keyway. The bottom of the retaining plates is provided with guide slopes and rounded corners. The outer ring of the slewing bearing transition plate is provided with a ring of first bolt holes, which are used to fix with the inner ring of the slewing bearing. The bottom inner ring of the slewing bearing transition plate is provided with a ring of positioning stop. The top of the slewing bearing transition plate is provided with a nested ring that mates with the positioning of the slewing bearing.
3. The rotary table device for easy long-distance assembly and disassembly according to claim 2, characterized in that, The outer ring of the slewing bearing transition plate is also provided with a first positioning pin hole, which is used for positioning by a positioning pin and a slewing fixed base. The positioning pin is fixedly set on the slewing fixed base.
4. The rotary table device for easy long-distance assembly and disassembly according to claim 3, characterized in that, The slewing bearing is nested on the slewing bearing transition plate and cooperates with the nested ring on the slewing bearing transition plate. The slewing bearing is fixed to the slewing bearing transition plate by fasteners. The slewing disc is set on the slewing bearing and fixed to the slewing bearing by fasteners.
5. The rotary table device for easy remote assembly and disassembly according to claim 4, characterized in that, The positioning pin is a cylindrical pin with a guide bevel at the top.
6. The rotary table device for easy long-distance assembly and disassembly according to claim 5, characterized in that, There are four C-type fixing clamps; the C-type fixing clamps are fixed on the transition plate of the slewing bearing.
7. The rotary table device for easy long-distance assembly and disassembly according to claim 6, characterized in that, The slewing disc is provided with several lifting lugs for easy lifting; the lifting lugs are evenly distributed around the circumference of the slewing disc, and the lifting lugs are used to lift the slewing bearing assembly as a whole using a crane lifting device.