Large tapered roller bearing oil-filled cage

Abstract

The present invention discloses a large tapered roller bearing oil-replenishing retainer, comprising a left ring and a right ring, wherein a plurality of beams are arranged circumferentially on the side wall of the left ring, pockets for accommodating external rolling bodies are formed between adjacent beams, and a fixing hole is provided on the side wall of the right ring corresponding to each beam position, and a fixing rod is penetrated through each fixing hole, and each beam is provided with a fixing groove for adjacent fixing rods to penetrate and threadedly engage along its length direction, and each fixing rod is provided with an oil-replenishing member for replenishing grease to adjacent pockets. The present invention solves the problem in the prior art that there is a lack of a retainer that is easy to install and convenient for replenishing oil to rolling bodies in pockets.

Description

Technical Field

[0001] The invention relates to the technical field of cages, in particular to an oil-filling cage for a large tapered roller bearing. Background Art

[0002] The welded cage of large tapered roller bearings with traditional structure must be subjected to medium frequency quenching or carburizing heat treatment on the cage surface, which greatly increases the difficulty of cage processing and installation. In addition, the cages used for large bearings are large in size, so grease loss will increase when the bearings run at high speeds. When the bearings are running, the grease is consumed too quickly, which can easily lead to uneven distribution of grease in the pockets, causing dry running of the rolling elements. Summary of the invention

[0003] In view of the shortcomings of the prior art, the present invention provides a large tapered roller bearing oil-replenishing cage to solve the problem in the prior art of lacking a cage that is easy to install and convenient for replenishing oil to the rolling elements in the pockets.

[0004] To achieve the above-mentioned purpose, the present invention provides an oil-replenishing retainer for a large tapered roller bearing, comprising a left ring and a right ring, wherein a plurality of beam bodies are arranged circumferentially on the side wall of the left ring, pockets for accommodating external rolling bodies are formed between adjacent beam bodies, a fixing hole is provided on the side wall of the right ring corresponding to each beam body position, a fixing rod is passed through each fixing hole, each of the beam bodies is provided with a fixing groove along its length direction for adjacent fixing rods to pass through and threadedly engage, and each fixing rod is provided with an oil-replenishing member for replenishing grease into its adjacent pockets.

[0005] The benefits of adopting the above technical solution are: when it is necessary to assemble the retaining frame, the operator aligns the left ring and the right ring coaxially, and then inserts each fixing rod and connects it with the corresponding fixing hole thread, and then continues to screw in the fixing rod, so that each fixing rod can be inserted into the adjacent fixing groove and cooperate with the corresponding fixing groove thread, so that the left ring and the right ring are fixedly connected; the setting of the above technology is convenient for the operator to process it separately, and it is also convenient to assemble it, thereby reducing the difficulty of assembling and splicing the retaining frame. At the same time, the setting of the oil replenishing part in the above technology can also replenish grease to adjacent pockets, and when the grease inside the bearing dries up, the operator can unscrew the fixing rod out of the retaining frame and replace it with a new fixing rod, so that the oil replenishing part on the new fixing rod can continue to replenish grease inside the bearing, thereby ensuring that the rolling elements inside the bearing will not dry out due to grease exhaustion.

[0006] The present invention is further provided with: a slot connected to the pocket hole is formed on each side wall of the beam body, each of the slots is connected to the respective adjacent fixing slots, each of the fixing rods is provided with an oil storage cavity along its length direction, the oil storage cavity is filled with solid grease, a through slot connected to the oil storage cavity is formed on the fixing rod, each through slot opening is aligned with and connected to the respective adjacent slot openings, and the solid grease is the oil filling part.

[0007] The benefits of adopting the above technical solution are: when the fixing rod is inserted into the fixing groove, the through groove on the fixing rod is connected to the slot, and when the bearing runs at high speed, its internal temperature will gradually rise, so that the solid grease in the oil storage chamber will gradually turn into liquid grease, and flow out through the through groove into the slot, and then flow into the pocket hole through the slot, thereby replenishing the grease of the external rolling body in the pocket hole, and the slot is arranged on the inner wall of the pocket hole, so that the grease can be evenly coated on the surface of the rolling body through the inner wall of the pocket hole, thereby ensuring that the surface of the external rolling body will not be thrown or leaked due to excessive grease, and at the same time, the rolling body will not have an increase in friction torque due to uneven local grease distribution when running at high speed, thereby avoiding affecting the rotation speed of the rolling body.

[0008] The present invention is further provided that: a film for closing the through slot is provided in each of the through slots, a penetration plate is provided in each of the slots, the penetration plate is made of a shape memory alloy, the penetration plate has a first form in a first temperature range, and the penetration plate has a second form in a second temperature range, the penetration plate is vertical in the first form and closes the slot, and the penetration plate is bent in the second form to penetrate into the through slot and pierce the film.

[0009] The advantages of adopting the above technical solution are: the penetration plate is made of shape memory alloy material, and when the bearing is running at high speed, its internal temperature will gradually rise and reach above 40 degrees. The internal temperature of the bearing reaches above 40 degrees, which is the second temperature range, and the internal temperature of the bearing is below 40 degrees, which is the first temperature range. The penetration plate is made of shape memory alloy material, so that it bends and penetrates into the through groove after the bearing runs at high speed for a period of time. At this time, the bending of the penetration plate will puncture the film, so that the lubricating grease that has been converted from solid grease to liquid grease flows out through the through groove to the adjacent pocket hole, thereby realizing lubrication of the inside of the bearing. The setting of the above technology ensures that the grease in the oil storage chamber will not leak when the bearing is not running, and at the same time ensures that the lubricating grease can lubricate the inside of the bearing in time when the bearing is running at high speed.

[0010] The present invention further provides that: a stopper is provided on the side wall of the beam body, the radial cross section of the connection between the stopper and the beam body is arranged in a step-like shape, and each of the stoppers is arranged to partially abut against the outer peripheral wall of the right ring.

[0011] The benefit of adopting the above technical solution is that the setting of the stop opening in the above technology can effectively limit the radial deviation or shaking of the right ring, ensuring that the left ring and the right ring will not separate radially.

[0012] The present invention further provides that: the outer peripheral wall of the fixing rod is coated with metal glue.

[0013] The benefit of adopting the above technical solution is that the metal glue coated on the outer peripheral wall of the fixing rod can increase the friction torque between the fixing rod and the fixing groove, thereby preventing the fixing rod from axially separating from the fixing groove. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a three-dimensional view of the present invention;

[0015] Figure 2 Exploded three-dimensional view of the present invention;

[0016] Figure 3 It is a partial cross-sectional view of the penetration plate of the present invention in an unused state;

[0017] Figure 4 This is a partial cross-sectional view of the penetration plate of the present invention in use. DETAILED DESCRIPTION

[0018] The present invention provides an oil-filling retainer for a large tapered roller bearing, comprising a left ring 1 and a right ring 2, wherein a plurality of beam bodies 11 are arranged circumferentially on the side wall of the left ring 1, pockets 12 for accommodating external rolling bodies are formed between adjacent beam bodies 11, a fixing hole 21 is opened on the side wall of the right ring 2 corresponding to the position of each beam body 11, a fixing rod 3 is penetrated through each fixing hole 21, each beam body 11 is opened along its length direction with a fixing groove 22 for adjacent fixing rods 3 to penetrate and threadedly cooperate with, each fixing rod 3 is provided with an oil-filling part for replenishing grease into the adjacent pockets 12, a groove 23 connected with the pocket 12 is opened on the side wall of each beam body 11, each of the grooves 23 is connected with the adjacent fixing grooves 22, each fixing rod 3 is opened along its length direction with an oil storage cavity 31, the oil storage cavity 31 is filled with solid grease, and the fixing rod 3 A through slot 32 connected to the oil storage chamber 31 is provided on the top, and the opening of each through slot 32 is aligned with the opening of the respective adjacent slot 23 and is connected, and the solid grease is the oil replenishing part, and each through slot 32 is provided with a film 33 for closing the through slot 32, and each slot 23 is provided with a penetration plate 24, and the penetration plate 24 is made of shape memory alloy material, and the penetration plate 24 has a first form in a first temperature range, and has a second form in a second temperature range. In the first form, the penetration plate 24 is in a vertical state and closes the slot 23, and in the second form, the penetration plate 24 is bent to penetrate into the through slot 32 and pierce the film 33, and a stop 13 is provided on the side wall of the beam body 11, and the radial cross-section of the connection between the stop 13 and the beam body 11 is stepped, and each of the stop 13 is partially abutted against the outer peripheral wall of the right ring 2, and the outer peripheral wall of the fixing rod 3 is coated with metal glue.

[0019] The basic principles and main features of the present invention and the advantages of the present invention are shown and described above. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The above embodiments and descriptions are only for illustrating the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, which shall fall within the scope of the present invention to be protected. The scope of protection of the present invention shall be defined by the attached claims and their equivalents.

Claims

1. A large tapered roller bearing oil-filling cage, characterized in that: The invention comprises a left ring and a right ring, wherein a plurality of beam bodies are arranged in an annular direction on the side wall of the left ring, pockets for accommodating external rolling bodies are formed between adjacent beam bodies, a fixing hole is opened on the side wall of the right ring corresponding to the position of each beam body, a fixing rod is passed through the fixing hole, each of the beam bodies is opened along its length direction with a fixing groove for adjacent fixing rods to penetrate and threadedly cooperate with, each of the fixing rods is provided with an oil replenishing part for replenishing grease into the adjacent pocket holes, a slot connected with the pocket hole is opened on the side wall of each beam body, each of the slots is connected with the adjacent fixing slots, an oil storage cavity is opened on each fixing rod along its length direction, the oil storage cavity is filled with solid grease, a through groove connected with the oil storage cavity is opened on the fixing rod, and each through groove opening is aligned with and connected with the adjacent groove opening, and the solid grease is the oil replenishing part.

2. The large tapered roller bearing oil-filling cage according to claim 1, characterized in that: Each of the through grooves is provided with a film for closing the through grooves, and each of the slots is provided with a penetration plate, which is made of a shape memory alloy. The penetration plate has a first form in a first temperature range, and has a second form in a second temperature range. The penetration plate is vertical in the first form and closes the slots, and the penetration plate is bent in the second form to penetrate the through groove and pierce the film.

3. The large tapered roller bearing oil-filling cage according to claim 1, characterized in that: The side wall of the beam body is provided with a stopper, and the radial cross section of the connection between the stopper and the beam body is arranged in a step-like shape, and each of the stoppers is arranged to partially abut against the outer peripheral wall of the right ring.

4. The large tapered roller bearing oil-filling retainer according to claim 1, characterized in that: The outer peripheral wall of the fixing rod is coated with metal glue.

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