Plastic oil rolling bearing retainer

Abstract

The utility model discloses a plastic oil rolling bearing retainer which is applied to the field of bearing retainers and comprises a ball retainer assembly and a roller retainer assembly, the ball retainer assembly comprises a fixing ring, one side of the fixing ring is fixedly connected with a first retainer, and a lining support is fixedly sleeved with the first retainer; according to the utility model, the ball retainer assembly and the pin roller retainer assembly which are prepared by adopting the retainer I and the retainer II not only can play roles in separating rolling bodies and supporting, but also can lubricate the rolling bodies and a raceway, so that the lubrication problem of the bearing is solved from the source, and the long-term and effective maintenance-free function is realized; the retainer can realize maintenance-free of the bearing, avoids the situation that the service life and the reliability of the bearing are reduced due to the use of lubricating grease, and avoids the problem that the cost is increased or the site arrangement space is limited due to the fact that a lubricating system is additionally arranged.

Description

Technical Field

[0001] The utility model relates to the field of bearing retainers, in particular to a plastic oil rolling bearing retainer. Background Art

[0002] Lubrication is an essential link between friction pairs in the normal operation of mechanical equipment and in the material manufacturing process. Conventional bearings use metal or non-metal cages; these cages usually have no lubrication effect. After long-term use, they will cause damage or wear to the cages, which will further affect the heating of the raceway, wear or cause bearing damage. The existing solutions are mainly to fill grease or add an additional lubrication system;

[0003] Grease is easily affected by the external environment and leaks, resulting in a decrease in the life and reliability of the bearing; adding a lubrication system will lead to increased costs and site layout space requirements.

[0004] In order to solve the above problems, we propose a rolling bearing cage of plastic oil. Utility Model Content

[0005] The utility model aims to provide a plastic oil rolling bearing retainer, which has the advantage of being maintenance-free.

[0006] The above technical objectives of the utility model are achieved through the following technical solutions: a plastic oil rolling bearing cage, including a ball cage assembly and a roller cage assembly, the ball cage assembly includes a fixing ring, one side of the fixing ring is fixedly connected to a cage 1, the interior of the cage 1 is fixedly sleeved with an inner liner bracket, and the interiors of the cage 1 and the inner liner bracket are both provided with a plurality of ball mounting grooves;

[0007] The roller cage assembly comprises a cage 2, the top and bottom of the cage 2 are fixedly connected to limit rings, a plurality of cores are fixedly sleeved inside the cage 2, and a plurality of roller mounting grooves are opened inside the cage 2;

[0008] The cage 1 and the cage 2 are both plastic oil;

[0009] The plastic oil is composed of porous oil-containing lubricating materials, which use polyethylene PE or ultra-high molecular weight polyethylene, polyimide, PEEK and other polymers as the matrix, and porous lubricating media composed of self-lubricating materials such as graphite of high temperature resistant materials;

[0010] The lubricating medium is a mixture of polymer powder, lubricating oil and additives to form a viscous fluid state, which is heated and solidified to form a porous oil-containing lubricating material;

[0011] Wherein, the polymer powder includes polyethylene PE, ultra-high molecular weight polyethylene, polyimide or PEEK polymer;

[0012] Plastic oil can provide a stable supply of lubricating oil to the bearings;

[0013] The preparation of the body shaping oil comprises the following steps:

[0014] S1: Select polymers such as polyethylene PE, ultra-high molecular weight polyethylene, polyimide or PEEK as the matrix material;

[0015] S2: The high temperature resistant self-lubricating material is prepared into a powdered high temperature resistant self-lubricating material by a crushing device, and mixed with lubricating oil and additives to form a viscous fluid lubricating medium, wherein the lubricating oil content of the lubricating medium is between 35% and 99%;

[0016] S3: injecting the lubricating medium into the cage or the bearing so that the injected lubricating medium covers the rolling element and maintains its viscous fluid state;

[0017] S4: heating and curing the lubricating medium injected into the bearing to form a porous oil-containing lubricating material, i.e., plastic oil;

[0018] The methods of injecting lubricating medium into bearings include injection molding, molding and vulcanization.

[0019] By adopting the above technical solution, the use requirements of ball and roller bearings are met by setting a ball cage assembly or a roller cage assembly, and it can not only separate the rolling elements, provide support, but also lubricate the rolling elements and raceways.

[0020] The utility model is further configured as follows: the shapes of the liner bracket, the ball mounting groove and the retaining frame 2 are one of wave shape, chrysanthemum shape, groove shape, bowl shape, sunflower shape, M shape, C shape and O shape.

[0021] By adopting the above technical solution, the lubrication performance of the rolling bearing cage can be improved regardless of the shape in which the liner bracket, the ball mounting groove and the cage are processed. Especially under low-speed operating conditions, the rolling bearing no longer needs to be lubricated with oil or grease, thus achieving maintenance-free operation.

[0022] The utility model is further configured as follows: the material of the lining bracket includes metal material and non-metal material.

[0023] Using the above technical solution, the metal materials include copper alloy, stainless steel, carbon steel, aluminum alloy, etc.;

[0024] Non-metallic materials include PE, PEEK, UPE, PA, PI, etc.

[0025] The use of different materials determines the strength and application areas of the liner bracket, meeting the use requirements of the liner bracket in different scenarios.

[0026] In summary, the utility model has the following beneficial effects:

[0027] 1. The utility model adopts cage 1 and cage 2 to prepare a ball cage assembly and a roller cage assembly, which can not only separate rolling elements and support them, but also lubricate rolling elements and raceways. Cage 1 and cage 2 are a solid lubricant, which is made of polymers such as polyethylene PE, ultra-high molecular weight polyethylene, polyimide or PEEK as a base material, and is mixed with lubricating oil and additives to form a viscous fluid-like lubricating medium. After heating and curing, it forms a porous oil-containing lubricating material. These micropores can accommodate lubricating oil and retain it in the material through surface tension, thereby achieving a lubricating effect, thereby solving the lubrication problem of the bearing at the source, and is effective for a long time, and realizing a maintenance-free function;

[0028] The cage can realize maintenance-free bearings, avoid the use of grease which would cause a decrease in bearing life and reliability, and avoid the increase in costs or limited space for site layout caused by adding an additional lubrication system. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 This is a three-dimensional diagram of the ball cage assembly of the utility model;

[0030] Figure 2 This is a three-dimensional diagram of the roller cage assembly of the utility model;

[0031] Figure 3 It is a top sectional view of the roller cage assembly of the utility model;

[0032] Figure 4 It is a schematic diagram of the utility model segmented ball bearing.

[0033] Reference numerals: 1, ball cage assembly; 101, fixing ring; 102, cage 1; 103, liner bracket; 104, ball mounting groove;

[0034] 2. Roller cage assembly; 201. Cage 2; 202. Limiting ring; 203. Core wrapping; 204. Roller mounting groove. DETAILED DESCRIPTION

[0035] The utility model is further described in detail below in conjunction with the accompanying drawings. Example 1

[0036] refer to Figure 1 , Figure 2 , Figure 3 and Figure 4 A plastic oil rolling bearing cage comprises a ball cage assembly 1 and a roller cage assembly 2, wherein the ball cage assembly 1 comprises a fixing ring 101, a fixing ring 101 is fixedly connected to a fixing frame 102 on one side, a liner bracket 103 is fixedly sleeved inside the fixing frame 102, and a plurality of ball mounting grooves 104 are provided inside the fixing frame 102 and the liner bracket 103;

[0037] The roller cage assembly 2 includes a cage 201, the top and bottom of the cage 201 are fixedly connected to limit rings 202, a plurality of cores 203 are fixedly sleeved inside the cage 201, and a plurality of roller mounting grooves 204 are opened inside the cage 201;

[0038] The cage 102 and the cage 201 are both made of plastic oil, which is composed of porous oil-containing lubricating material. The porous oil-containing lubricating material uses polyethylene PE or ultra-high molecular weight polyethylene, polyimide, PEEK and other polymers as a matrix, and a porous lubricating medium composed of self-lubricating materials such as graphite of high-temperature resistant materials; the lubricating medium is a viscous fluid state formed by mixing polymer powder, lubricating oil and additives, and is heated and cured to form a porous oil-containing lubricating material; wherein the polymer powder includes polyethylene PE, ultra-high molecular weight polyethylene, polyimide or PEEK polymer; the plastic oil can provide a stable supply of lubricating oil for the bearing;

[0039] The ball cage assembly 1 and roller cage assembly 2 prepared by using cage 102 and cage 201 can not only separate the rolling elements and provide support, but also lubricate the rolling elements and raceways. Cage 102 and cage 201 are a solid lubricant, which is made of polymers such as polyethylene PE, ultra-high molecular weight polyethylene, polyimide or PEEK as a base material, and is mixed with lubricating oil and additives to form a viscous fluid-like lubricating medium, which is heated and solidified to form a porous oil-containing lubricating material. These micropores can accommodate the lubricating oil and retain it in the material through surface tension, thereby achieving a lubricating effect, thereby solving the lubrication problem of the bearing at the source, and is effective for a long time, achieving a maintenance-free function.

[0040] The retaining frame of the utility model can not only separate the rolling elements and provide support, but also lubricate the rolling elements and raceways. The plastic oil mentioned in the utility model, also called solid oil, is a lubricant in a solid state. The solid lubricant is made of polymers such as polyethylene PE, ultra-high molecular weight polyethylene, polyimide or PEEK as a base material, and is mixed with lubricating oil and additives to form a viscous fluid-like lubricating medium. After heating and curing, it forms a porous oil-containing lubricating material. These micropores can accommodate the lubricating oil and retain it in the material through surface tension, so that the plastic oil retaining frame can solve the bearing lubrication problem from the source, and it is effective for a long time and can even be maintenance-free during use. And a retaining frame of plastic oil; the retaining frame can not only separate the rolling elements and provide support, but also lubricate the rolling elements and raceways.

[0041] In some embodiments, the cage can be divided into a structure with an inner frame and a structure without an inner frame; its form can be divided into an integral type and a segmented type; the material of the inner cage frame can be divided into a metal material and a non-metal material; the metal material includes copper alloy, stainless steel, carbon steel, aluminum alloy, etc. without limitation; the non-metal material includes PE, PEEK, UPE, PA, PI, etc. without limitation. The part where the cage contacts the rolling element is filled with plastic oil, so that it can not only separate the rolling element and support it, but also lubricate the rolling element and the raceway.

[0042] Furthermore, the shapes of the liner bracket 103, the ball mounting groove 104 and the retaining frame 201 are one of wave shape, daisy shape, groove shape, bowl shape, sunflower shape, M shape, C shape and O shape. No matter what shape the liner bracket 103, the ball mounting groove 104 and the retaining frame 201 are processed in, the lubrication performance of the rolling bearing retaining frame can be improved, especially under low-speed operating conditions, so that the rolling bearing no longer needs to be lubricated with oil or grease, thereby achieving maintenance-free.

[0043] Furthermore, the material of the liner bracket 103 includes metal materials and non-metal materials. The metal materials include copper alloy, stainless steel, carbon steel, aluminum alloy, etc.; the non-metal materials include PE, PEEK, UPE, PA, PI, etc.; the use of different materials determines the strength and use field of the liner bracket 103, and meets the use requirements of the liner bracket 103 in different scenarios.

[0044] Furthermore, the lubricating particles of the plastic oil are elastomers with a microporous structure, and saturated lubricating grease is adsorbed in the microporous structure of the elastomer; the elastomer and the lubricating grease are integrally formed, and under the action of external force, the elastomer squeezes the lubricating grease out of the microporous structure and wraps it around the outside of the elastomer to form a self-lubricating state, and is re-adsorbed into the microporous structure as the external force weakens.

[0045] The utility model has the advantages that the plastic oil retainer not only takes into account the functions of retaining and fixing the rolling elements, but also has the function of lubricating the rolling elements, thereby increasing the service life of the rolling elements and the entire set of bearings, and greatly improving the applicability of the retainer; the manufactured rolling bearing retainer, no matter what shape, such as wave-shaped, chrysanthemum-shaped, groove-shaped, bowl-shaped, sunflower-shaped, M-shaped, C-shaped, O-shaped and other shapes of the plastic oil retainer, can improve the lubrication performance of the rolling bearing retainer, especially under low-speed operating conditions, the rolling bearing can be maintained without adding lubricating oil or grease, thereby achieving maintenance-free.

[0046] The preparation of the body shaping oil comprises the following steps:

[0047] S1: Select polymers such as polyethylene PE, ultra-high molecular weight polyethylene, polyimide or PEEK as the matrix material;

[0048] S2: The high temperature resistant self-lubricating material is prepared into a powdered high temperature resistant self-lubricating material by a crushing device, and mixed with lubricating oil and additives to form a viscous fluid lubricating medium, wherein the lubricating oil content of the lubricating medium is between 35% and 99%;

[0049] S3: injecting the lubricating medium into the cage or the bearing so that the injected lubricating medium covers the rolling element and maintains its viscous fluid state;

[0050] S4: heating and curing the lubricating medium injected into the bearing to form a porous oil-containing lubricating material, i.e., plastic oil;

[0051] The methods of injecting lubricating medium into bearings include injection molding, molding and vulcanization.

[0052] The utility model solid oil retainer is mainly composed of porous oil-containing lubricating material. The porous oil-containing lubricating material uses polymers such as polyethylene PE or ultra-high molecular weight polyethylene (UHMWPE), polyimide (PI), PEEK as a matrix, and a porous lubricating medium composed of self-lubricating materials such as graphite of high temperature resistant materials. The lubricating medium is a viscous fluid state formed by mixing polymer powder, lubricating oil and additives. After heating and curing treatment, it forms a porous oil-containing lubricating material.

[0053] Solid oils provide a steady supply of lubricating oil to the bearing. When a metal surface, such as the raceway of a bearing, slides over solid oil, it is covered with a uniform film of oil. The oil is then pushed to the surface of the polymer matrix at only a modest increase in operating temperature. This “low” oil in the polymer matrix is ​​because the oil has a higher coefficient of thermal expansion than the polymer matrix, and because the viscosity of the oil decreases with increasing temperature. When the bearing stops operating, the excess oil is reabsorbed into the polymer matrix.

[0054] Brief description of the use process: Cage 102 and cage 201 are made of polymers such as polyethylene PE, ultra-high molecular weight polyethylene, polyimide or PEEK as the base material, and are mixed with lubricating oil and additives to form a viscous fluid lubricating medium, which is heated and solidified to form a porous oil-containing lubricating material. These micropores can accommodate the lubricating oil and retain it in the material through surface tension;

[0055] The lubricating particles of the cage 102 and the cage 201 are elastomers with microporous structures, and saturated lubricating grease is adsorbed in the microporous structures of the elastomers;

[0056] The elastomer and the lubricating grease are integrally formed. Under the action of external force, the elastomer squeezes the lubricating grease out of the microporous structure and wraps it around the outside of the elastomer to form a self-lubricating state, and then re-adsorbs it into the microporous structure as the external force weakens.

[0057] The physical shape of the solid lubricating particles is regular or irregular, for example, it can be a spherical structure, and the size is divided into different particle sizes according to the needs of the particle size;

[0058] During rotation, when a metal surface such as a bearing raceway slides on the plastic oil, it is covered with a uniform film of oil, and then, only at a moderate increase in operating temperature, the oil is pushed to the surface of the polymer matrix. This "low" oil in the polymer matrix is ​​because the oil has a higher thermal expansion coefficient than the polymer matrix, and because the viscosity of the oil decreases with increasing temperature, when the bearing stops running, the excess oil is reabsorbed into the polymer matrix, thereby achieving maintenance-free function. The plastic oil rolling bearing cage of the utility model can be applied to all rolling bearings with cages or retaining bodies (particles).

[0059] This specific embodiment is merely an explanation of the present invention and is not a limitation of the present invention. After reading this specification, those skilled in the art may make non-creative modifications to the present embodiment as needed, but such modifications are protected by patent law as long as they are within the scope of the claims of the present invention.

Claims

1. A plastic oil rolling bearing cage, comprising a ball cage assembly (1) and a roller cage assembly (2), characterized in that: The ball retainer assembly (1) comprises a fixing ring (101), one side of the fixing ring (101) is fixedly connected to a retainer frame 1 (102), the interior of the retainer frame 1 (102) is fixedly sleeved with an inner liner bracket (103), and the interiors of the retainer frame 1 (102) and the inner liner bracket (103) are both provided with a plurality of ball mounting grooves (104); The roller cage assembly (2) comprises a cage 2 (201), the top and bottom of the cage 2 (201) are fixedly connected to limit rings (202), a plurality of cores (203) are fixedly sleeved inside the cage 2 (201), and a plurality of roller mounting grooves (204) are provided inside the cage 2 (201); The retainer 1 (102) and the retainer 2 (201) are both plastic oil.

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