Roller bearing with threaded structure

Abstract

The utility model discloses a roller bearing with a thread structure, which comprises an inner ring, an outer ring, a roller, a sealing ring and a retainer ring, the roller is arranged between the inner ring and the outer ring, and the retainer ring is in interference fit with the inner ring. At least one end of the oil storage cavity is communicated with the peripheral wall of the roller, the cavity plug is used for sealing the oil storage cavity, the oil conveying pieces are evenly distributed between the peripheral wall of the roller and the oil storage cavity, one end of each oil conveying piece is communicated with the peripheral wall of the roller, and the other end of each oil conveying piece is communicated with the oil storage cavity. One end of the cavity plug is inserted into the oil storage cavity and is in interference fit with the inner wall of the oil storage cavity, a connecting part is arranged between the check ring and the inner ring, the roller of the roller bearing can store more grease, the grease is uniformly distributed, the bearing is convenient to install, and the structure is simple.

Description

Technical Field

[0001] The utility model relates to the technical field of roller bearings, in particular to a roller bearing with a threaded structure. Background Art

[0002] In roller bearings, technical personnel in this field generally use a retaining ring in the bearing to limit the movement of the roller and prevent the roller from falling. The position of the retaining ring is very important. The inner circumferential wall of the retaining ring in the bearing needs to have an interference fit with the outer circumferential wall of the inner ring to achieve the purpose of limiting the retaining ring from falling out of the bearing. The outer circumferential wall of the roller of the existing roller bearing has grease, and the grease is used to lubricate the roller surface and reduce the friction generated by the contact between the roller and the inner and outer rings. When the roller rotates, the grease on the roller surface is easily consumed. Technical personnel in this field use an oil storage tank in the bearing to store excess grease on the roller surface and replenish the stored grease to the roller surface in time after the grease on the roller surface is consumed. However, this oil storage tank structure can only make the grease adhere to the roller surface when the roller passes through the oil storage tank, and the adhesion is uneven. The oil storage capacity of the oil storage tank is also small. In addition, since the retaining ring needs to have an interference fit with the inner ring, the installation process is cumbersome and the installation is inconvenient. Utility Model Content

[0003] In view of the deficiencies in the prior art, the utility model provides a roller bearing with a threaded structure. The roller of the roller bearing can store more grease, and the grease is evenly distributed. The bearing is easy to install and has a simple structure.

[0004] To achieve the above-mentioned purpose, the utility model provides a roller bearing with a threaded structure, comprising an inner ring, an outer ring, a roller, a sealing ring and a retaining ring, the roller being arranged between the inner ring and the outer ring, the retaining ring being interference fit with the inner ring, the roller being provided with an oil storage cavity at least one end of which is connected to the outer peripheral wall of the roller, a cavity plug for sealing the oil storage cavity and a plurality of oil conveying parts evenly distributed between the outer peripheral wall of the roller and the oil storage cavity, one end of the oil conveying part being connected to the outer peripheral wall of the roller, and the other end being connected to the oil storage cavity, one end of the cavity plug being inserted into the oil storage cavity and being interference fit with the inner wall thereof, and a connecting portion being provided between the retaining ring and the inner ring.

[0005] The above technical solution can produce the following effects: an oil storage cavity is arranged in the roller, a cavity plug is used to seal the oil storage cavity, and a plurality of oil delivery parts are evenly distributed between the outer peripheral wall of the roller and the oil storage cavity; the oil storage cavity can store grease, the cavity plug can prevent a large amount of grease in the oil storage cavity from leaking out, the oil delivery part can output the grease in the oil cavity to the roller surface, the cavity plug is interference fit with the oil storage cavity, and it is not easy for the cavity plug to fall out after plugging the oil storage cavity; a connecting part is arranged between the retaining ring and the inner ring, so that the retaining ring and the inner ring that originally require interference fit can be connected through the connecting part, so that the connection is more convenient and the bearing installation is simpler However, in this solution, when installing the bearing, the technical personnel in this field first inject grease into the oil storage cavity in the roller, and then plug the two ends of the oil storage cavity with the cavity plug. The cavity plug and the oil storage cavity have an interference fit and are not easy to fall out of the oil storage cavity. After the roller and the inner and outer rings of the bearing are installed, when the roller rotates, the grease in the oil storage cavity can be output from the oil storage cavity of the roller to the surface of the roller through the oil delivery member, so that the surface of the roller remains lubricated. Each roller is provided with an oil storage cavity, which can store more grease. The evenly distributed oil delivery members can make the grease output more evenly. The structure is simple and the installation is convenient.

[0006] The utility model further arranges that: the oil delivery member is a through hole, and the radial width of the through hole corresponding to the oil storage cavity opening is gradually reduced toward the radial width of the through hole corresponding to the roller outer peripheral wall opening.

[0007] The effect that can be produced by adopting the above technical scheme is: a through hole with openings of different sizes at both ends is adopted as an oil conveying member, and the radial width of the opening toward one end of the outer peripheral wall of the roller is smaller than the radial width of the opening toward one end of the oil storage chamber. Such a through hole can control the output amount of grease from the oil storage chamber when the roller rolls, and the grease outputted from the opening with a smaller diameter is less than the grease outputted from the opening with a larger diameter, and the opening corresponding to one end of the oil storage groove is gradually reduced toward the opening at one end of the outer peripheral wall of the roller, so that the grease is not easily retained in the through hole, and the grease output is smoother.

[0008] The utility model further provides that: the connecting portion includes a notch provided on the outer peripheral wall of the inner ring corresponding to the position of the retaining ring, a first thread is provided in the notch, and a second thread matched and connected with the first thread is provided at the position of the retaining ring corresponding to the thread notch.

[0009] The effect that can be produced by adopting the above-mentioned technical scheme is: when the existing retaining ring is installed, the retaining ring is pressed into the outer peripheral wall of the inner ring, and the interference fit between the two makes it difficult for the retaining ring to fall out. In this scheme, a first thread is set in the notch and a second thread is set on the retaining ring. When installing the retaining ring, technical personnel in this field can tighten the retaining ring to the outer peripheral wall of the inner ring. The installation is simple, and the threaded connection is stable and not easy to loosen.

[0010] The utility model is further configured as follows: the oil storage cavity is arranged in the middle of the roller, both ends of the oil storage cavity in the length direction are connected to the outer peripheral wall of the roller, and a cavity plug is arranged at both ends of the oil storage cavity. After the cavity plug and the oil storage cavity are plugged in, the cavity plug is flush with the end faces of the two ends of the roller in the length direction.

[0011] The effect that can be produced by adopting the above technical scheme is: by setting the oil storage chamber in the middle of the roller, when the roller rolls, the grease is not easy to deviate to one side of the oil storage chamber, and can be more evenly distributed in the oil storage chamber, and the cavity plug is inserted into the oil storage chamber and has an interference fit with the two ends of the oil storage chamber, so that the two ends of the oil storage chamber are sealed. The seal in this scheme is to prevent the grease from flowing out of the oil storage chamber. The end face of the cavity plug after being inserted into the oil storage chamber is flush with the end faces at both ends of the roller in the length direction, which will not affect the rolling of the roller and improve the service life.

[0012] The utility model is further configured that: the through hole is a micro through hole.

[0013] The above technical solution can produce the following effects: by setting the through hole as a micro through hole, when the roller rotates at high speed, the micro through hole can control the oil output, avoiding waste caused by excessive grease on the roller surface, and the structure is simple. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a cross-sectional view of a roller according to an embodiment of the utility model;

[0015] Figure 2 It is a partial structural diagram of an embodiment of the utility model;

[0016] Figure 3 It is an overall cross-sectional view of an embodiment of the utility model. DETAILED DESCRIPTION

[0017] An embodiment of a roller bearing with a threaded structure of the present invention is shown in the figure. To achieve the above-mentioned purpose, the present invention provides a roller bearing with a threaded structure, including an inner ring 1, an outer ring 2, a roller 11, a sealing ring 3 and a retaining ring 4. The roller 11 is arranged between the inner ring 1 and the outer ring 2. The retaining ring 4 is interference fit with the inner ring 1. The roller 11 is provided with an oil storage cavity 5 at least one end of which is connected to the outer peripheral wall of the roller 11, a cavity plug 6 for sealing the oil storage cavity 5, and a plurality of oil delivery parts uniformly arranged between the outer peripheral wall of the roller 11 and the oil storage cavity 5. One end of the oil delivery part is connected to the outer peripheral wall of the roller 11, and the other end is connected to the oil storage cavity 5. One end of the cavity plug 6 is inserted into the It is connected to the oil storage cavity 5 and has an interference fit with the inner wall thereof. A connecting portion is provided between the retaining ring 4 and the inner ring 1. The oil storage cavity 5, the cavity plug 6 for sealing the oil storage cavity 5 and a plurality of oil delivery parts evenly distributed between the outer peripheral wall of the roller 11 and the oil storage cavity 5 are provided in the roller 11. The oil storage cavity 5 can store grease. The cavity plug 6 can prevent a large amount of grease in the oil storage cavity 5 from leaking out. The oil delivery part can output the grease in the oil storage cavity 5 to the surface of the roller 11. The cavity plug 6 is interference fit with the oil storage cavity 5. After the cavity plug 6 plugs the oil storage cavity 5, it is not easy to fall out. The connecting portion is provided between the retaining ring 4 and the inner ring 1 so that the retaining ring 4 and the inner ring 1, which originally need to have an interference fit, can pass through the connecting portion. Connection, in this solution, when installing the bearing, the technicians in this field first inject grease into the oil storage cavity 5 in the roller 11, and then plug the two ends of the oil storage cavity 5 with the cavity plug 6. The cavity plug 6 and the oil storage cavity 5 have an interference fit and are not easy to escape from the oil storage cavity 5. After the roller 11 is installed with the inner ring 1 and the outer ring 2 of the bearing, when the roller 11 rotates, the grease in the oil storage cavity 5 can be output from the oil storage cavity 5 of the roller 11 to the surface of the roller 11 through the oil delivery member, so that the surface of the roller 11 remains lubricated. Each roller 11 is provided with an oil storage cavity 5, which can store more grease. The evenly distributed oil delivery members can make the grease output more evenly; the oil delivery member The through hole 7 has a radial width of an opening on one side of the oil storage chamber 5 that is gradually reduced toward a radial width of an opening on one side of the outer peripheral wall of the corresponding roller 11. The through hole 7 with different opening sizes at both ends is used as the oil delivery member, and the radial width of the opening on one end of the outer peripheral wall of the roller 11 is smaller than the radial width of the opening on one end of the oil storage chamber 5. This through hole 7 can control the output of grease from the oil storage chamber 5 when the roller 11 rolls. The grease output from the opening with a smaller diameter is less than that from the opening with a larger diameter. The opening on one end of the corresponding oil storage tank is gradually reduced toward the opening on one end of the outer peripheral wall of the roller 11, so that the grease is not easily retained in the through hole 7.The connecting portion includes a notch 8 arranged on the outer circumferential wall of the inner ring 1 corresponding to the position of the retaining ring 4, a first thread 9 is arranged in the notch 8, and a second thread 10 matched with the first thread 9 is arranged at the position of the retaining ring 4 corresponding to the thread notch 8. When the existing retaining ring 4 is installed, the retaining ring 4 is pressed into the outer circumferential wall of the inner ring 1, and the interference fit between the two makes it difficult for the retaining ring 4 to fall out. In this scheme, the first thread 9 is arranged in the notch 8, and the second thread 10 is arranged on the retaining ring 4. When installing the retaining ring 4, the technicians in this field can tighten the retaining ring 4 to the outer circumferential wall of the inner ring 1; the oil storage chamber 5 is arranged in the middle position of the roller 11, and both ends of the oil storage chamber 5 in the length direction are connected to the outer circumferential wall of the roller 11, and a cavity plug 6 is arranged at both ends of the oil storage chamber 5, and the cavity plug 6 and the oil storage chamber 5 plug After the connection, the cavity plug 6 is flush with the end faces of both ends of the roller 11 in the length direction. The oil storage cavity 5 is set in the middle of the roller 11. When the roller 11 rolls, the grease is not easy to deviate to one side of the oil storage cavity 5, and can be more evenly distributed in the oil storage cavity 5. The cavity plug 6 is inserted into the oil storage cavity 5 and has an interference fit with both ends of the oil storage cavity 5, so that the two ends of the oil storage cavity 5 are sealed. The sealing in this scheme is to prevent the grease from flowing out of the oil storage cavity 5. The end face of the cavity plug 6 after being inserted into the oil storage cavity 5 is flush with the end faces of both ends of the roller 11 in the length direction, which will not affect the rolling of the roller 11; the through hole 7 is a micro through hole 7. The through hole 7 is set as a micro through hole 7. When the roller 11 rotates at a high speed, the micro through hole 7 can control the oil output. The radius of the micro through hole 7 in this scheme is 5μm-20μm. ;

[0018] The above shows and describes the basic principles and main features of the utility model and the advantages of the utility model. Those skilled in the art should understand that the utility model is not limited to the above embodiments. The above embodiments and descriptions are only for explaining the principles of the utility model. Without departing from the spirit and scope of the utility model, the utility model may have various changes and improvements, which shall fall within the scope of the utility model to be protected. The scope of protection of the utility model shall be defined by the attached claims and their equivalents.

Claims

1. A roller bearing with a threaded structure, comprising an inner ring, an outer ring, a roller, a sealing ring and a retaining ring, wherein the roller is arranged between the inner ring and the outer ring, and the retaining ring is interference fit with the inner ring, characterized in that: The roller is provided with an oil storage cavity with at least one end connected to the outer peripheral wall of the roller, a cavity plug for sealing the oil storage cavity and a plurality of oil delivery parts evenly distributed between the outer peripheral wall of the roller and the oil storage cavity, one end of the oil delivery part is connected to the outer peripheral wall of the roller, and the other end is connected to the oil storage cavity, one end of the cavity plug is inserted into the oil storage cavity and has an interference fit with the inner wall thereof, and a connecting portion is provided between the retaining ring and the inner ring.

2. The roller bearing with a threaded structure according to claim 1, characterized in that: The oil delivery member is a through hole, and the radial width of the through hole opening on one side corresponding to the oil storage cavity is gradually reduced toward the radial width of the through hole opening on the side corresponding to the outer peripheral wall of the roller.

3. The roller bearing with a threaded structure according to claim 1, characterized in that: The connecting portion includes a notch provided on the outer peripheral wall of the inner ring corresponding to the position of the retaining ring, a first thread is provided in the notch, and a second thread matched and connected with the first thread is provided at the position of the thread notch corresponding to the retaining ring.

4. The roller bearing with a threaded structure according to claim 1, characterized in that: The oil storage cavity is arranged in the middle of the roller, and both ends of the oil storage cavity in the length direction are connected with the outer peripheral wall of the roller. A cavity plug is arranged at both ends of the oil storage cavity. After the cavity plug and the oil storage cavity are plugged in, the cavity plug is flush with the end faces of the two ends of the roller in the length direction.

5. The roller bearing with a threaded structure according to claim 2, characterized in that: The through hole is a micro through hole.

Images