Slewing bearing for lifting appliance

Abstract

The slewing bearing comprises an outer ring and an inner ring, a positioning table is arranged on the inner wall of the outer ring, a connecting table is arranged on the outer circumferential wall of the inner ring, a first pin roller is arranged between the positioning table and the connecting table, a matching groove is further formed in the inner circumferential wall of the outer ring, and a second pin roller is arranged in the matching groove. A second pin roller is arranged between the outer ring and the inner ring and arranged in the matching groove, a cover plate is further arranged on the end face, away from the positioning table, of the outer ring, and the edge of the cover plate is arranged on the end face of the inner ring in a blocking mode. The structure is simple, assembling is convenient, radial loads can be borne, and stable operation of the structure is guaranteed.

Description

TECHNICAL FIELD

[0001] The utility model relates to a rotary support for a lifting appliance. BACKGROUND

[0002] Complex construction scenes pose new challenges to the flexibility of lifting appliances, requiring them to achieve precise rotation. Rotary supports can be well adapted to such harsh working conditions due to their strong bearing and rotation capabilities. However, the existing rotary supports are too large in size, making it difficult to assemble the structure and not conducive to improving the efficiency of the structure. SUMMARY

[0003] To overcome the shortcomings of the prior art, the utility model provides a rotary support for a lifting appliance, which is simple in structure, easy to assemble, can bear radial load, and ensures stable operation of the structure.

[0004] To achieve the above-mentioned purpose, the utility model provides a rotary support for a lifting appliance, which comprises an outer ring and an inner ring, a positioning table is arranged on the inner wall of the outer ring, a connecting table is arranged on the outer peripheral wall of the inner ring, a first roller is arranged between the positioning table and the connecting table, a matching groove is further arranged on the inner peripheral wall of the outer ring, a second roller is arranged between the outer ring and the inner ring, the second roller is arranged in the matching groove, a cover plate is further arranged on the end face of the outer ring away from the positioning table, and the edge of the cover plate is arranged on the end face of the inner ring.

[0005] The beneficial effects of such arrangement are as follows: the bearing structure is simple to assemble, the outer ring is placed on the pad with a height of greater than or equal to 15 cm on the ground or workbench in the assembly area, the first roller and the retainer matched therewith are placed on the raceway of the positioning table of the outer ring, the second roller and the retainer matched therewith are placed in the matching groove, the inner ring is installed correspondingly, the cover plate is placed on the mounting surface of the outer ring, and the installation of the entire bearing is completed, which is simple and fast. The bearing is simple and convenient to install, without the need for complex installation tools and professional techniques, saving time and labor costs. The unique structure enables it to bear axial and radial loads and stably operate under different working conditions, and it is widely used in various lifting appliance equipment.

[0006] As a further arrangement of the utility model, a first oil supplement groove is arranged on the outer peripheral wall of the outer ring, and a second oil supplement groove is arranged on the outer peripheral wall of the outer ring corresponding to the position of the first roller.

[0007] The beneficial effect of such an arrangement is that the first oil supplement groove builds a basic oil supply channel for the overall lubricating system, through which the lubricating oil can be quickly supplemented to the various movable parts of the slewing bearing, ensuring smooth overall operation. The second oil supplement groove is aimed at the key wear area, i.e. the position of the first roller, for precise oil supply. The operator only needs to pass through this specific oil supplement groove to make the lubricating oil directly reach the first roller, accurately reduce friction, and greatly extend the service life of the first roller and the surrounding structure, reducing the risk of equipment failure.

[0008] As a further arrangement of the utility model, the matching groove is further provided with a containing groove, the containing groove is provided with grease storage wool, the connecting end face of the outer ring and the cover plate is provided with a through groove corresponding to the position of the containing groove, and the cover plate extends a positioning column into the through groove.

[0009] The beneficial effect of such an arrangement is that the containing groove in the matching groove is placed with the grease storage wool, which slowly releases lubricating oil when the equipment is running, continuously provides lubrication for the second roller, effectively reduces the friction between the roller and the matching groove, and prolongs the service life of the equipment. When the cover plate is installed, the positioning column can be accurately inserted into the through groove to quickly complete positioning, avoid the deviation or misplacement of the cover plate during installation, greatly improve the installation efficiency, ensure the equipment installation quality, and make the entire slewing bearing system run more stably and reliably.

[0010] As a further arrangement of the utility model, the cover plate is provided with a through hole penetrating the positioning column, a taking hook is inserted into the through hole, one end of the taking hook is provided with a handle, and the other end is spirally coiled into a columnar shape.

[0011] The beneficial effect of such an arrangement is that one end of the taking hook is provided with a handle, which is convenient for the operator to hold and exert force, and the other end is spirally coiled into a columnar shape, which has a unique design idea. When the grease storage wool is released and needs to be replaced, the operator only needs to hold the handle, insert the taking hook into the containing groove through the through hole, hook the grease storage wool with the spirally coiled end, and easily take it out of the containing groove with stable holding force, greatly simplifying the replacement process, reducing the maintenance difficulty, and ensuring that the new grease storage wool can be replaced in time to maintain the good lubrication state of the equipment.

[0012] As a further arrangement of the utility model, the free end of the taking hook is sharp.

[0013] The beneficial effect of such an arrangement is that it is convenient for the end to be positioned with the grease storage wool in time, facilitates rotation to coil the grease storage wool around the taking hook end, facilitates subsequent pulling out of the grease storage wool for replacement, and has simple structure, convenient use and good use reliability. BRIEF DESCRIPTION OF DRAWINGS

[0014] Fig. 1A cross section structure schematic view of the oil supplementing groove position in the embodiment of the utility model;

[0015] Fig. 2 A cross section structure schematic view of the through groove position in the embodiment of the utility model;

[0016] Fig. 3 A partial enlarged view of the hook in use in the embodiment of the utility model. DETAILED DESCRIPTION

[0017] The utility model provides a kind of slewing bearing for lifting appliance embodiment, as shown in Figs. 1 to 3 Positioning table 21 is provided on the inner wall of outer ring 2, connecting table 11 is provided on the outer peripheral wall of inner ring 1, first roller 4 is provided between positioning table 21 and connecting table 11, cooperating groove is further provided on the inner peripheral wall of outer ring 2, second roller 5 is provided between outer ring 2 and inner ring 1, second roller 5 is arranged in cooperating groove, cover plate 3 is further provided on the end face of outer ring 2 away from positioning table 21, and the edge of cover plate 3 is blocked on the end face of inner ring 1.The beneficial effect of such setting is: the bearing structure is simple in assembly mode, the pad block with height ≥15cm is placed on the ground or workbench in assembly area first, then outer ring 2 is placed on the pad block;first roller 4 and the retainer matched therewith are placed on the raceway of positioning table 21 of outer ring 2;second roller 5 and the retainer matched therewith are placed in cooperating groove, inner ring 1 is installed correspondingly, cover plate 3 is placed on the mounting surface of outer ring 2, and the installation of the whole bearing is completed, which is simple and fast.The bearing is simple and convenient to install, without complex installation tools and professional technology, time and labor cost are saved.The unique structure enables it to bear axial and radial load, and it can operate stably under different working conditions, and is widely applied to various lifting appliance equipment.

[0018] As a further setting of the utility model, first oil supplementing groove 61 is provided on the outer peripheral wall of outer ring 2, and second oil supplementing groove 62 is provided on the outer peripheral wall of outer ring 2 corresponding to the position of first roller 4.The beneficial effect of such setting is: first oil supplementing groove 61 builds up the oil supply channel of the basic lubricating system as a whole, through which, the lubricating oil can be quickly supplemented to each movable part of slewing bearing preliminarily, to ensure smooth overall operation.Second oil supplementing groove 62 precisely supplies oil to the key wear area, i.e.the position of first roller 4.Operators only need to pass through this specific oil supplementing groove to make lubricating oil directly reach first roller 4, accurately reduce friction, greatly prolong the service life of first roller 4 and the surrounding structure, and reduce the risk of equipment failure.

[0019] As a further setting of the utility model, the accommodating groove is further arranged in the matching groove, the grease storage wool 7 is arranged in the accommodating groove, the through groove is arranged on the connecting end face of the outer ring 2 and the cover plate 3 corresponding to the position of the accommodating groove, and the positioning column 31 extends into the through groove from the cover plate 3. The beneficial effect of the setting is that the grease storage wool 7 is placed in the accommodating groove arranged in the matching groove, the grease storage wool 7 slowly releases lubricating oil when the equipment is running, continuously provides lubrication for the second roller 5, effectively reduces the friction between the roller and the matching groove, prolongs the service life of the equipment, the positioning column 31 can be accurately inserted into the through groove when the cover plate 3 is installed, the positioning is quickly completed, the deviation or misplacement of the cover plate 3 in the installation process is avoided, the installation efficiency is greatly improved, the equipment installation quality is ensured, and the whole slewing ring system runs more stably and reliably.

[0020] As a further setting of the utility model, the through hole penetrating the positioning column 31 is arranged on the cover plate 3, the taking hook 6 is inserted into the through hole, the taking hook 6 is provided with the handle at one end and is spirally coiled into a column at the other end. The beneficial effect of the setting is that the handle is installed at one end of the taking hook 6, the operator can hold and exert force conveniently, the other end is spirally coiled into a column, and the design is unique. When the grease release of the grease storage wool 7 is completed and needs to be replaced, the operator only needs to hold the handle, inserts the taking hook 6 into the accommodating groove through the through hole, hooks the grease storage wool 7 by the spirally coiled end, and can easily take out the grease storage wool 7 from the accommodating groove by the stable holding force, greatly simplifies the replacement process, reduces the maintenance difficulty, ensures that the new grease storage wool 7 can be replaced in time, and maintains the good lubrication state of the equipment.

[0021] As a further setting of the utility model, the free end of the taking hook 6 is sharp. The beneficial effect of the setting is that the end part can be positioned with the grease storage wool 7 in time, the grease storage wool 7 can be coiled on the end part of the taking hook by rotating, the grease storage wool 7 can be pulled out and replaced subsequently, the structure is simple, convenient to use, and has good use reliability.

[0022] The above examples are only one of the preferred specific examples of the utility model, and the usual changes and replacements made by the person skilled in the art within the technical scheme range of the utility model are included in the protection range of the utility model.

Claims

1. A slewing bearing for a hoist comprising an outer ring and an inner ring, characterized in that: The outer ring inner wall is provided with a positioning platform, the inner ring outer peripheral wall is provided with a connecting platform, the first roller is arranged between the positioning platform and the connecting platform, the outer ring inner peripheral wall is further provided with a matching groove, the second roller is arranged between the outer ring and the inner ring, the second roller is arranged in the matching groove, the end face of the outer ring away from the positioning platform is further provided with a cover plate, and the cover plate edge is arranged on the inner ring end face.

2. The slewing ring for a spreader according to claim 1, characterized in that: The outer ring outer peripheral wall is provided with a first oil supplementing groove, and the outer ring outer peripheral wall is provided with a second oil supplementing groove corresponding to the position of the first roller.

3. The slewing ring for a spreader as set forth in claim 1, wherein: The matching groove is further provided with a containing groove, the containing groove is provided with grease storage wool, the connecting end face of the outer ring and the cover plate is provided with a through groove corresponding to the position of the containing groove, and the cover plate extends into the through groove and is provided with a positioning column.

4. The slewing ring for a spreader according to claim 3, characterized in that: The cover plate is provided with a through hole penetrating the positioning column, the through hole is provided with a taking hook, one end of the taking hook is provided with a handle, and the other end is spirally wound into a columnar shape.

5. The slewing ring for a spreader according to claim 4, characterized in that: The free end of the taking hook is sharp.

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