Slewing bearing with vibration absorption function

Abstract

The utility model belongs to the technical field of slewing bearings, and particularly relates to a slewing bearing with a vibration absorption function, which comprises a bearing outer ring, a bearing inner ring and a bearing base, the bearing inner ring is connected in the bearing outer ring, the bearing base is connected on the side surface of the bearing outer ring, a transmission gear rod is mounted in the bearing base, and a transmission shaft is mounted in the transmission gear rod. A motor base is arranged on one side of the supporting base, and an oil nozzle is arranged on the surface of the supporting outer ring. A guide round hole is formed in the surface of the motor base. When the driving motor vibrates, the motor base drives the guide round hole to move on the surface of the guide rod and pulls the steel spring strip to deform, and the steel spring strip can absorb kinetic energy generated by vibration in the deformation process. And meanwhile, when the motor base moves, the first rubber pad can be driven to rub with the second rubber pad on the surface of the boss, kinetic energy can be absorbed in the friction process of the first rubber pad and the second rubber pad, and transmission of vibration generated by the driving motor is reduced.

Description

Technical Field

[0001] The utility model belongs to the technical field of slewing bearings, and in particular relates to a slewing bearing with a vibration absorbing function. Background Art

[0002] Slewing bearing is also called turntable bearing, and some people also call it: rotating bearing, swing bearing. Slewing bearing is widely used in real industry and is called "machine joint". It is an important transmission component required for machinery that needs to make relative rotation between two objects and bear axial force, radial force and tipping moment at the same time. With the rapid development of the machinery industry, slewing bearings have been widely used in ship equipment, engineering machinery, light industrial machinery, metallurgical machinery, medical machinery, industrial machinery and other industries.

[0003] The existing internal gear slewing bearing is driven by a driving motor to rotate the transmission gear rod when in use. When the transmission gear rod rotates, the inner ring is driven to rotate through the meshing structure between the inner ring and the driving motor. During this process, the driving motor will generate vibrations. The vibration of the driving motor will drive the support base and the outer ring of the support to vibrate, which will cause the fixing bolts connecting the slewing bearings to loosen, thereby causing the slewing bearing to shake as a whole, causing equipment safety problems. Utility Model Content

[0004] The utility model aims to provide a slewing bearing with a vibration absorption function, aiming to solve the problem in the prior art that the driving motor of the existing slewing bearing will generate vibration during operation, and the vibration of the driving motor will drive the supporting base and the supporting outer ring to vibrate, which will cause the fixing bolts connecting the slewing bearings to loosen, thereby causing the slewing bearing to shake as a whole, causing equipment safety problems.

[0005] To achieve the above purpose, the utility model provides the following technical solution: a slewing bearing with a vibration absorbing function, comprising a supporting outer ring, a supporting inner ring and a supporting base, the inner part of the supporting outer ring is connected to the supporting inner ring, the side surface of the supporting outer ring is connected to the supporting base, a transmission gear rod is installed inside the supporting base, a motor seat is arranged on one side of the supporting base, and an oil nozzle is arranged on the surface of the supporting outer ring;

[0006] A guide circular hole is opened on the surface of the motor seat, a guide rod passes through the inside of the guide circular hole, the guide rod is connected to the side surface of the supporting base, a steel spring bar is connected between the supporting base and the motor seat, the steel spring bar is sleeved on the surface of the guide rod, the side surface of the motor seat is connected to an arc plate, the inner side of the arc plate is connected to a first rubber pad, the side surface of the supporting base is connected to a boss, and the side surface of the boss is connected to a second rubber pad.

[0007] In order to limit the movement direction of the motor seat, as a preferred embodiment of the slewing bearing with vibration absorption function of the utility model, the motor seat is slidably connected with the guide rod through the guide circular hole.

[0008] In order to absorb the kinetic energy generated by the vibration of the driving motor conveniently through the steel spring strip, as a preferred embodiment of the slewing bearing with vibration absorption function of the utility model, the motor seat forms an elastic telescopic structure with the support base through the steel spring strip.

[0009] In order to prevent the lubricating fluid from condensing at low temperatures, as a preferred slewing bearing with vibration absorption function of the utility model, a heat conduction groove is opened inside the support outer ring, and a first conductive wire runs through the inside of the support outer ring near the heat conduction groove, and the end of the first conductive wire is connected to a resistance wire, and the resistance wire is located inside the heat conduction groove, and the other end of the resistance wire is connected to a second conductive wire, and the second conductive wire runs through the support outer ring and extends to the outside.

[0010] In order to facilitate uniform heat transfer, as a preferred embodiment of the slewing bearing with vibration absorption function of the utility model, a heat transfer fluid made of propylene glycol is injected into the heat transfer groove.

[0011] In order to facilitate the generation of heat, as a preferred embodiment of the slewing bearing with vibration absorption function of the utility model, the resistance wire is made of nickel-chromium alloy wire.

[0012] Compared with the prior art, the beneficial effects of the utility model are:

[0013] The utility model can drive the guide circular hole to move on the surface of the guide rod through the motor seat when the driving motor vibrates, and the motor seat can pull the steel spring strip to deform when the motor seat moves. The steel spring strip can absorb the kinetic energy generated by the vibration during the deformation process. At the same time, when the motor seat moves, it can drive the first rubber pad to rub against the second rubber pad on the surface of the boss. Kinetic energy can also be absorbed during the friction between the first rubber pad and the second rubber pad. In this way, the transmission of the vibration generated by the driving motor can be reduced, and looseness between the components of the slewing support caused by the vibration can be avoided, thereby affecting the use of the slewing support.

[0014] When using the slewing bearing in a low temperature environment, the first conductive wire and the second conductive wire can be connected to the electric wire respectively. Then, the resistance wire will heat up when the power is turned on. When the resistance wire heats up, the heat can be transferred to the heat transfer fluid inside the heat transfer groove. The heat transfer fluid then transfers the heat to the outer ring of the bearing. The heat inside the outer ring of the bearing can prevent the internal lubricating fluid from condensing, thereby causing insufficient lubrication between the slewing bearing components, aggravating wear, and preventing the service life of the slewing bearing from being shortened. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation of the present invention. In the accompanying drawings:

[0016] Figure 1 This is a schematic diagram of the main structure of the utility model;

[0017] Figure 2 This is a rear view structural diagram of the utility model;

[0018] Figure 3 This is a schematic diagram of the connection structure between the support base and the motor base of the utility model;

[0019] Figure 4 This is an exploded view of the connection structure between the support base and the motor base of the utility model;

[0020] Figure 5 This is a schematic diagram of the cross-sectional structure of the outer ring of the support of the utility model;

[0021] Figure 6 For this utility model Figure 5 Schematic diagram of the structure at point A in the middle.

[0022] In the figure: 1. supporting outer ring; 2. supporting inner ring; 3. supporting base; 4. transmission gear rod; 5. motor seat; 6. oil nozzle; 7. guide circular hole; 8. guide rod; 9. steel spring bar; 10. arc plate; 11. first rubber pad; 12. boss; 13. second rubber pad; 14. heat conduction groove; 15. first conductive wire; 16. resistance wire; 17. second conductive wire. DETAILED DESCRIPTION

[0023] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0024] See also Figure 1-Figure 6 The utility model provides the following technical solution: a slewing bearing with a vibration absorbing function, comprising a supporting outer ring 1, a supporting inner ring 2 and a supporting base 3, the inner part of the supporting outer ring 1 is connected with the supporting inner ring 2, the side surface of the supporting outer ring 1 is connected with the supporting base 3, a transmission gear rod 4 is installed inside the supporting base 3, a motor seat 5 is arranged on one side of the supporting base 3, and an oil nozzle 6 is arranged on the surface of the supporting outer ring 1;

[0025] A guide circular hole 7 is opened on the surface of the motor seat 5, and a guide rod 8 passes through the inside of the guide circular hole 7. The guide rod 8 is connected to the side surface of the supporting base 3. A steel spring bar 9 is connected between the supporting base 3 and the motor seat 5. The steel spring bar 9 is sleeved on the surface of the guide rod 8. The side surface of the motor seat 5 is connected to an arc plate 10, and the inner side of the arc plate 10 is connected to a first rubber pad 11. The side surface of the supporting base 3 is connected to a boss 12, and the side surface of the boss 12 is connected to a second rubber pad 13.

[0026] Preferably, the motor base 5 is slidably connected to the guide rod 8 through the guide circular hole 7 .

[0027] During specific use, when the driving motor vibrates, the motor seat 5 can drive the guide circular hole 7 to move on the surface of the guide rod 8, so that the range of movement of the driving motor during vibration can be limited.

[0028] Preferably, the motor seat 5 forms an elastic telescopic structure with the support base 3 through the steel spring strip 9 .

[0029] During specific use, the motor base 5 can pull the steel spring strip 9 to deform when it moves, and the steel spring strip 9 can absorb the kinetic energy generated by vibration during the deformation process.

[0030] Preferably: a heat-conducting groove 14 is opened inside the supporting outer ring 1, a first conductive wire 15 passes through the inside of the supporting outer ring 1 near the heat-conducting groove 14, the end of the first conductive wire 15 is connected to a resistance wire 16, the resistance wire 16 is located inside the heat-conducting groove 14, the other end of the resistance wire 16 is connected to a second conductive wire 17, the second conductive wire 17 passes through the supporting outer ring 1 and extends to the outside.

[0031] During specific use, the heat transfer fluid can transfer heat to the support outer ring 1. The heat inside the support outer ring 1 can prevent the internal lubricating fluid from condensing, thereby causing insufficient lubrication between the slewing support components and increasing wear.

[0032] Preferably, a heat-conducting liquid made of propylene glycol is injected into the heat-conducting groove 14 .

[0033] During specific use, when the resistance wire 16 generates heat, the heat can be transferred to the heat-conducting fluid inside the heat-conducting groove 14 , and the heat-conducting fluid then transfers the heat to the supporting outer ring 1 .

[0034] Preferably, the resistance wire 16 is made of nickel-chromium alloy wire.

[0035] During specific use, the resistance wire 16 will generate heat when powered.

[0036] Working implementation principle: When using the slewing bearing with vibration absorption function, first install the drive motor on the motor seat 5, and connect the transmission gear rod 4 to the output end of the drive motor, and then run the drive motor. When the drive motor is running, it can drive the transmission gear rod 4 to rotate. The rotation of the transmission gear rod 4 can drive the inner ring 2 of the support to rotate through the meshing structure. During this process, the drive motor will vibrate. When the drive motor vibrates, the guide circular hole 7 can be driven by the motor seat 5 to move on the surface of the guide rod 8. When the motor seat 5 moves, it can pull the steel spring bar 9 to deform. The steel spring bar 9 can absorb the kinetic energy generated by the vibration during the deformation process. At the same time, when the motor seat 5 moves, it can drive the first rubber pad 11 to rub against the second rubber pad 13 on the surface of the boss 12. Kinetic energy absorption can also be performed during the friction between the first rubber pad 11 and the second rubber pad 13, which can reduce the transmission of vibration generated by the drive motor.

[0037] When the slewing bearing is used in a low temperature environment, the first conductive wire 15 and the second conductive wire 17 can be connected to the electric wires respectively. Then, the resistance wire 16 will heat up when the power is turned on. When the resistance wire 16 heats up, the heat can be transferred to the heat-conducting fluid inside the heat-conducting groove 14. The heat-conducting fluid then transfers the heat to the support outer ring 1. The heat inside the support outer ring 1 can prevent the internal lubricating fluid from condensing.

[0038] Finally, it should be noted that the above are only preferred embodiments of the present invention and are not intended to limit the present invention. Although the present invention has been described in detail with reference to the above embodiments, those skilled in the art can still modify the technical solutions described in the above embodiments or replace some of the technical features therein by equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A slewing bearing with a vibration absorbing function, comprising a bearing outer ring (1), a bearing inner ring (2) and a bearing base (3), characterized in that: The inner part of the supporting outer ring (1) is connected to the supporting inner ring (2), the side surface of the supporting outer ring (1) is connected to the supporting base (3), a transmission gear rod (4) is installed inside the supporting base (3), a motor seat (5) is arranged on one side of the supporting base (3), and an oil nozzle (6) is arranged on the surface of the supporting outer ring (1); A guide circular hole (7) is provided on the surface of the motor seat (5), a guide rod (8) passes through the inside of the guide circular hole (7), the guide rod (8) is connected to the side surface of the support base (3), a steel spring bar (9) is connected between the support base (3) and the motor seat (5), the steel spring bar (9) is sleeved on the surface of the guide rod (8), the side surface of the motor seat (5) is connected to an arc plate (10), the inner side of the arc plate (10) is connected to a first rubber pad (11), the side surface of the support base (3) is connected to a boss (12), and the side surface of the boss (12) is connected to a second rubber pad (13).

2. The slewing bearing with vibration absorbing function according to claim 1, characterized in that: The motor seat (5) is slidably connected to the guide rod (8) via the guide circular hole (7).

3. The slewing bearing with vibration absorbing function according to claim 1, characterized in that: The motor seat (5) forms an elastic telescopic structure with the supporting base (3) through the steel spring strip (9).

4. The slewing bearing with vibration absorbing function according to claim 1, characterized in that: A heat-conducting groove (14) is provided inside the supporting outer ring (1), a first conductive wire (15) passes through the inside of the supporting outer ring (1) near the heat-conducting groove (14), an end of the first conductive wire (15) is connected to a resistance wire (16), the resistance wire (16) is located inside the heat-conducting groove (14), the other end of the resistance wire (16) is connected to a second conductive wire (17), and the second conductive wire (17) passes through the supporting outer ring (1) and extends to the outside.

5. The slewing bearing with vibration absorbing function according to claim 4, characterized in that: A heat-conducting liquid made of propylene glycol is injected into the interior of the heat-conducting groove (14).

6. The slewing bearing with vibration absorbing function according to claim 4, characterized in that: The resistance wire (16) is made of nickel-chromium alloy wire.

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