CN110285138A - A kind of super-huge double-row conical pivoting support with adjusting washer - Google Patents

Abstract

The invention discloses an extra-large double-row tapered roller slewing bearing with an adjusting washer, which comprises an inner ring, an outer ring and rolling elements arranged between the inner ring and the outer ring. The inner ring includes a first inner ring, a second The inner ring and the washer, the washer is arranged between the first inner ring and the second inner ring, and the axial direction of the inner ring is installed with a tapered pin for positioning the first inner ring, the washer and the second inner ring , the top of the conical pin is provided with a screw for fixing the conical pin, and the screw is installed on the end of the first inner ring or the second inner ring through threaded connection. The invention has simple structure, reasonable design, convenient use, and can use Washers are used to reduce the processing difficulty of the slewing bearing in the production process, and after the inner and outer rings of the slewing bearing are worn, the problem of increased clearance of the slewing bearing is compensated by further grinding of the washer, which prolongs the service life of the slewing bearing .

Description

A super-large double-row tapered roller slewing bearing with adjusting washers

technical field

The invention belongs to the technical field of slewing bearings, in particular to an extra-large double-row tapered roller slewing bearing with adjusting washers.

Background technique

The slewing ring is also called the slewing bearing, which is widely used in the actual industry. It is called the "joint of the machine". An important transmission component necessary for torque machinery. With the rapid development of the machinery industry, slewing bearings have been widely used in marine equipment, engineering machinery, light industrial machinery, metallurgical machinery, medical machinery, industrial machinery and other industries.

For extra-large double-row tapered roller slewing bearings, the clearance of the slewing bearings needs to be strictly controlled during production, so the machining accuracy requirements for the inner and outer rings and rollers are high, which increases the processing difficulty and production cost of the slewing bearings; in addition, Due to the large bearing capacity during work, the internal tapered rollers are prone to wear and tear on the contact parts of the inner and outer rings during the rotation process, which in turn causes the axial clearance and radial clearance of the slewing bearing to increase. Larger causes the work instability of the slewing bearing to increase, which in turn shortens the service life of the slewing bearing.

Contents of the invention

In order to solve the above technical problems, the present invention provides a super-large double-row tapered roller slewing bearing with an adjusting washer, which can reduce the processing difficulty of the slewing bearing in the production process by using the grinding washer, and the inside and outside of the slewing bearing After the ring is worn, the problem of increased clearance of the slewing ring can be compensated by further grinding the washer, which can prolong the service life of the slewing ring.

The technical solution adopted in the present invention is: a super-large double-row tapered roller slewing bearing with an adjusting washer, including an inner ring, an outer ring and rolling elements arranged between the inner ring and the outer ring, and the inner ring includes a first The inner ring, the second inner ring and the gasket, the gasket is arranged at the position between the first inner ring and the second inner ring, and the axial direction of the inner ring is installed with the first inner ring, the gasket and the second inner ring The conical pin for positioning, the top of the conical pin is provided with a screw for fixing the conical pin, and the screw is installed on the end of the first inner ring or the second inner ring through threaded connection.

A plurality of connecting bolts for connecting the first inner ring, the washer and the second inner ring are installed in the thickness direction of the inner ring, and the plurality of connecting bolts are evenly distributed around the center of the first inner ring.

The number of the conical pins is two.

The rolling body includes a cage and a roller, and the roller is a conical structure.

In the process of slewing bearing processing, in order to ensure that the clearance between the inner ring and the outer ring of the roller meets the design requirements, after the first inner ring and the second inner ring are processed, the upper and lower surfaces of the gasket can be matched and ground , after the grinding is completed, the first inner ring, the second inner ring and the washer are positioned through the conical pin, and the conical pin is reinforced with screws, and finally the first inner ring, the second inner ring and the washer are passed through the connecting bolts Locking and completing the assembly of the inner ring of the slewing ring can reduce the waste of time in the processing stage of the slewing ring; The axial clearance gradually increases. In order to ensure the stability of the slewing bearing, the connecting bolts and screws can be disassembled, and the tapered pin can be taken out from the position of the inner ring to achieve the purpose of disassembling the gasket. At this time, the upper and lower surfaces of the gasket can be ground. Machining to meet the design requirements of the axial clearance of the slewing bearing without scrapping the slewing bearing, which is beneficial to prolong the service life of the slewing bearing.

The inner ring includes a first inner ring, a second inner ring and a washer, and the washer is arranged at a position between the first inner ring and the second inner ring; the purpose of this setting is: adding the washer can reduce the processing of the inner ring of the slewing bearing Difficulty, when performing precision machining, only need to use the grinding method of the gasket to meet the size requirements, which can shorten the processing time of the entire inner ring; and after the clearance of the slewing bearing increases, the gasket can be disassembled and Matching grinding can make up for the defect of increased clearance, which is beneficial to prolonging the service life of the slewing bearing.

The axial direction of the inner ring is installed with a conical pin for positioning the first inner ring, the washer and the second inner ring, and a screw for fixing the conical pin is provided above the conical pin, and the screw is installed by threaded connection At the end of the first inner ring or the second inner ring; the purpose of this setting is: the tapered pin is used to realize the precise positioning of the first inner ring, the second inner ring and the washer, and improve the accuracy of assembly. Reinforcement is conducive to the stability of the slewing bearing during use and avoids the fall of the tapered pin.

The beneficial effects of the present invention are: the present invention is simple in structure, reasonable in design, easy to use, and can reduce the processing difficulty of the slewing bearing in the production process by using the grinding washer, and after the inner and outer rings of the slewing bearing are worn, the The gasket is further ground to make up for the problem of increased clearance of the slewing bearing, prolonging the service life of the slewing bearing.

Description of drawings

Fig. 1 is a structural schematic diagram of the present invention.

Marks in the figure: 1. Outer ring; 2. Cage; 3. Roller; 4. First inner ring; 5. Screw; 6. Tapered pin; 7. Washer; 8. Second inner ring.

Detailed ways

The specific implementation manners of the present invention will be further described in detail below in conjunction with the accompanying drawings.

As shown in the figure, a super-large double-row tapered roller slewing bearing with adjusting washers includes an inner ring, an outer ring 1 and rolling elements arranged between the inner ring and the outer ring 1, and the inner ring includes the first inner ring 4. The second inner ring 8 and the washer 7, the washer 7 is arranged at the position between the first inner ring 4 and the second inner ring 8, and is installed in the axial direction of the inner ring to connect the first inner ring 4, the washer 7 and the conical pin 6 for the positioning of the second inner ring 8, the top of the conical pin 6 is provided with a screw 5 for fixing the conical pin 6, and the screw 5 is installed on the first inner ring 4 or the second inner ring 8 by threaded connection the end of.

A plurality of connecting bolts for connecting the first inner ring 4 , the washer 7 and the second inner ring 8 are installed in the thickness direction of the inner ring, and the plurality of connecting bolts are evenly distributed around the center of the first inner ring 4 .

The number of the conical pins 6 is two.

The rolling body includes a cage 2 and a roller 3, the roller 3 is a conical structure, similar to the rolling body in the prior art, the roller 3 rotates with the force of the inner ring and the outer ring 1, and drives the cage 2 Rotation is generated between the inner ring and the outer ring 1.

During the processing of the slewing bearing, in order to ensure that the clearance between the inner ring and the outer ring 1 of the roller 3 meets the design requirements, after the first inner ring 4 and the second inner ring 8 are processed, the gasket 7 The upper and lower surfaces are matched and ground. After the grinding is completed, the first inner ring 4, the second inner ring 8 and the washer 7 are positioned by the conical pin 6, and the conical pin 6 is reinforced by the screw 5. Finally, the first inner ring The ring 4, the second inner ring 8 and the washer 7 are locked by connecting bolts to complete the assembly of the inner ring of the slewing ring, which can reduce the time waste of the slewing ring in the processing stage; after the slewing ring has been used for a period of time, the roller 3 and the inner ring Due to the action of force on the contact surface of ring and outer ring 1, the axial clearance of the slewing bearing gradually increases. In order to ensure the stability of the slewing bearing, the connecting bolt and screw 5 can be disassembled, and the conical pin 6 can be removed from the position of the inner ring. Take it out to achieve the purpose of dismantling the washer 7. At this time, the upper and lower sides of the washer 7 can be ground to meet the design requirements of the axial clearance of the slewing bearing without scrapping the slewing bearing, which is beneficial to prolong the life of the slewing bearing. service life.

Claims (4)

1. A super-large double-row tapered roller slewing bearing with an adjusting washer, characterized in that it includes an inner ring, an outer ring and rolling elements arranged between the inner ring and the outer ring, and the inner ring includes the first inner ring, The second inner ring and the gasket, the gasket is arranged at the position between the first inner ring and the second inner ring, and the axial direction of the inner ring is installed to position the first inner ring, the gasket and the second inner ring The taper pin, the top of the taper pin is provided with a screw for fixing the taper pin, and the screw is installed on the end of the first inner ring or the second inner ring through threaded connection. 2. A super-large double-row tapered roller slewing bearing with adjusting washers according to claim 1, characterized in that: the thickness direction of the inner ring is installed with the first inner ring, the washer, the second inner ring A plurality of connecting bolts for connection are evenly distributed around the center of the first inner ring. 3. A super-large double-row tapered roller slewing bearing with adjusting washers according to claim 1, characterized in that: the number of tapered pins is two. 4. A super-large double-row tapered roller slewing bearing with adjusting washers according to claim 1, characterized in that: the rolling body includes a cage and rollers, and the rollers are in a conical structure.