High-temperature-resistant embedded self-lubricating bearing and preparation process thereof

Abstract

The invention discloses a high-temperature-resistant embedded self-lubricating bearing and a preparation process thereof.The high-temperature-resistant embedded self-lubricating bearing comprises a bearing body, the bearing body comprises a bearing base and a lubricating assembly.The bearing base, a first supporting ring, a second supporting ring and a third supporting ring are prepared by compounding a metal material and a non-metal material together; wherein the lining material plays a self-lubricating role, and the base layer plays a supporting role, so that the prepared embedded self-lubricating bearing has good pressure resistance, the phenomenon of deformation or damage of the embedded self-lubricating bearing under the action of external force collision is avoided, and the service life of the embedded self-lubricating bearing is prolonged; by arranging the lubricating assembly, impurities in a lubricating agent are discharged along the embedded self-lubricating bearing after being intercepted by the filter element shell and the filter screen, and the redundant lubricating agent is stored in the oil storage tank for subsequent supply, so that the embedded self-lubricating bearing can conveniently work in an oil-free or oil-less environment, and the maintenance frequency and difficulty are reduced.

Description

Technical Field

[0001] The present invention relates to the technical field of self-lubricating bearings, and particularly to a high-temperature resistant inlaid self-lubricating bearing and a preparation process thereof. Background Art

[0002] Inlaid self-lubricating bearings can work in an oil-free or less-oil environment, and are particularly suitable for occasions where it is difficult or impossible to refuel, reducing the frequency and difficulty of maintenance. Due to the use of high-hardness materials and solid lubricants, inlaid self-lubricating bearings have excellent wear resistance and can maintain a low friction coefficient during long-term operation, thereby extending the service life of the bearings. This type of bearing has a flexible design and is suitable for harsh working conditions such as high temperature, high load, low speed and heavy load. At the same time, it also has good chemical resistance and corrosion resistance and can work stably in a variety of environments. During the friction process, the solid lubricant will transfer to the friction surface to form a lubricating film, greatly reducing friction and wear and ensuring the normal operation of mechanical components. Through the improvement of the structural design and lubrication method, the installation and use of inlaid self-lubricating bearings are more convenient. Especially in some occasions with limited space, its split structure and convenient inlayability of solid lubricants make maintenance simpler. Inlaid self-lubricating bearings are widely used in high-temperature, high-load, low-speed and heavy-load occasions such as metallurgical continuous casting machines, train brackets, rolling mill equipment, mining machinery, ships, steam turbines, etc. Due to their excellent chemical resistance and corrosion resistance, they are also suitable for environments infiltrated by water or other solutions.

[0003] However, traditional inlaid self-lubricating bearings have the following disadvantages:

[0004] Traditional inlaid self-lubricating bearings have poor support performance. Under the action of external force extrusion or collision, the surface of the inlaid self-lubricating bearing may be damaged or deformed when being extruded, shortening the service life of the inlaid self-lubricating bearing. Summary of the Invention

[0005] The purpose of the present invention is to provide a high-temperature resistant inlaid self-lubricating bearing and a preparation process thereof, so as to solve the problem that traditional inlaid self-lubricating bearings have poor support performance, and under the action of external force extrusion or collision, the surface of the inlaid self-lubricating bearing may be damaged or deformed when being extruded, shortening the service life of the inlaid self-lubricating bearing as mentioned in the above background art.

[0006] To achieve the above object, the present invention provides the following technical solution: a high-temperature resistant inlaid self-lubricating bearing, comprising a bearing body, the bearing body includes a bearing base and a lubricating component, the inside of the bearing base is connected to the bottom end of the lubricating component, a connecting component is installed at the top end of the lubricating component, and a sealing ring is sleeved outside the connection between the bearing base and the lubricating component. The lubricating component includes a first positioning plate and a plurality of lubricating columns. One ends of the plurality of lubricating columns are fixedly communicated with one side of the first positioning plate facing each other, and the other ends of the plurality of lubricating columns are fixedly installed with a second positioning plate.

[0007] As a preferred technical solution of the present invention, the bearing base includes a first support ring, a second support ring and a third support ring. The bottom end of the first support ring is fixedly connected to the top end of the second support ring, the bottom end of the second support ring is fixedly connected to the top end of the third support ring, the inside of the first support ring is connected to the lubricating component, and the first support ring, the second support ring and the third support ring play a supporting role.

[0008] As a preferred technical solution of the present invention, a plurality of first lubricating holes are provided on the surface of the first positioning plate, and a plurality of second lubricating holes are provided on the surface of the second positioning plate. The opening of the lubricating holes facilitates the flow of the lubricant and improves the lubricity of the self-lubricating bearing.

[0009] As a preferred technical solution of the present invention, the end of the first positioning plate away from the lubricating column is fixedly connected to the bearing base, and the end of the second positioning plate away from the lubricating column is fixedly connected to the connecting component. The lubricating component is installed on the bearing base through the first positioning plate, and the lubricating component is connected to the connecting component through the second positioning plate.

[0010] As a preferred technical solution of the present invention, each of the plurality of lubricating columns includes a lubricating shell and two limiting rings. A length shell is fixedly installed inside the lubricating shell. The two ends of the length shell are respectively fixedly communicated with one end of the two limiting rings facing each other. A porous conveying column is provided inside the length shell, a filter element shell is provided outside the porous conveying column, a plurality of filter meshes are fixedly installed on the surface of the length shell, and a plurality of oil storage grooves are provided inside the length shell. A plurality of balls are slidably connected inside the plurality of oil storage grooves. The lubricant is conveyed to the filter element shell through the porous conveying column, and then the excess lubricant is stored in the balls. Finally, the lubricant is discharged for use after being purified by the filter meshes.

[0011] As a preferred technical solution of the present invention, a first sealing piece and a second sealing piece are respectively sleeved on both sides of the connection between the lubricating shell and the length shell. The two ends of the lubricating shell are respectively connected to the first positioning plate and the second positioning plate. The first sealing piece and the second sealing piece fill the gap between the lubricating shell and the length shell, improving the sealing performance of the lubricating column itself.

[0012] As a preferred technical solution of the present invention, the connecting component includes an inner ring and an outer ring. The outer side of the inner ring is connected to the inner side of the outer ring. One end of the inner ring is connected to one end of the rolling element. The end of the rolling element far from the inner ring is connected to the lubricating component. The inner ring is usually fixed on the journal and rotates together with the shaft. There are grooves on the outer surface of the inner ring for the steel balls or rollers to roll, which are called inner grooves or inner raceways. The outer ring is usually fixed on the bearing housing or the casing of the machine and serves to support the rolling elements. There are also grooves on the inner surface of the outer ring for the steel balls or rollers to roll, which are called inner grooves or inner raceways. Each set of bearings is equipped with one or several sets of rolling elements, which are installed between the inner ring and the outer ring and play the role of rolling and transmitting forces. The rolling elements are the parts that bear the load, and their shape, size and quantity determine the bearing capacity and high-speed operation performance of the bearings.

[0013] The preparation process of a high-temperature resistant inlaid self-lubricating bearing of the present invention includes the following steps:

[0014] Step 1: Prepare the bearing base: Select the metal and non-metal raw materials for preparing the first support ring and sequentially put them into the mold for preparing the first support ring. After injection molding, demold to obtain the required first support ring. Select the metal and non-metal raw materials for preparing the second support ring and sequentially put them into the mold for preparing the second support ring. After injection molding, demold to obtain the required second support ring. Select the metal and non-metal raw materials for preparing the third support ring and sequentially put them into the mold for preparing the third support ring. After injection molding, demold to obtain the required third support ring, and then weld the first support ring, the second support ring and the third support ring together in sequence;

[0015] Step 2: Prepare the lubricating component: After assembling the lubricating columns between the first positioning plate and the second positioning plate, select graphite, molybdenum disulfide, PTFE or lead as the lubricant and inject it into the lubricating component to complete its preparation;

[0016] Step 3: Prepare the connecting component: Assemble the inner ring and the rolling elements together, and then install the outer ring on the outside of the inner ring to complete the preparation of the connecting component;

[0017] Step 4: Bearing assembly: Assemble the prepared bearing base, lubricating component and connecting component together.

[0018] As a preferred technical solution of the present invention, the metals for preparing the first support ring and the third support ring in Step 1 are specifically carbon steel, copper alloy, aluminum alloy and cast iron. The non-metals for preparing the first support ring and the third support ring in Step 1 are specifically plastics, rubbers and hardwoods. The metal for preparing the second support ring in Step 1 is specifically copper alloy, aluminum alloy, zinc alloy and babbit alloy. The non-metals for preparing the second support ring in Step 1 are specifically PTFE, PEEK, POM, PA, PI and phenolic resin.

[0019] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0020] 1. By setting the bearing base, the first support ring, the second support ring and the third support ring are prepared by combining metal materials and non-metal materials. Among them, the lining material plays a self-lubricating role, and the base layer plays a supporting role, so that the prepared inlaid self-lubricating bearing has good compressive capacity, avoiding deformation or damage under the action of external force collision, and extending the service life of the inlaid self-lubricating bearing;

[0021] 2. By setting the lubrication component, the impurities in the lubricant are intercepted by the filter element shell and the filter screen and then discharged along the inlaid self-lubricating bearing, and the excess lubricant is stored in the oil storage tank for subsequent supply, facilitating the inlaid self-lubricating bearing to work in an oil-free or less-oil environment, reducing the frequency and difficulty of maintenance. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 is a schematic structural diagram of the present invention;

[0023] Figure 2 is a schematic structural diagram of the lubrication component of the present invention;

[0024] Figure 3 is a schematic structural diagram of the bearing base of the present invention;

[0025] Figure 4 is a schematic structural diagram of the lubricating column of the present invention;

[0026] Figure 5 is a schematic structural diagram of the connection component of the present invention;

[0027] Figure 6 is a flow chart of the present invention.

[0028] In the figure: 1. Bearing body; 2. Bearing base; 21. First support ring; 22. Second support ring; 23. Third support ring; 3. Sealing ring; 4. Lubrication component; 41. First positioning plate; 42. First lubricating hole; 43. Lubricating column; 4301. Lubricating shell; 4302. First sealing piece; 4303. Limiting ring; 4304. Length shell; 4305. Filter screen; 4306. Oil storage tank; 4307. Ball; 4308. Porous conveying column; 4309. Filter element shell; 4310. Second sealing piece; 44. Second positioning plate; 45. Second lubricating hole; 5. Connection component; 51. Inner ring; 52. Outer ring; 53. Rolling element. DETAILED DESCRIPTION OF THE INVENTION

[0029] Next, in combination with the embodiments of the present invention, the technical solutions in the embodiments of the present invention will be clearly and completely described. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0030] Please refer to Figure 1-6 , the present invention provides a high-temperature-resistant inlaid self-lubricating bearing, including a bearing body 1. The bearing body 1 includes a bearing base 2 and a lubricating component 4. The inside of the bearing base 2 is connected to the bottom end of the lubricating component 4. A connecting component 5 is installed at the top end of the lubricating component 4. A sealing ring 3 is sleeved on the outside of the connection between the bearing base 2 and the lubricating component 4. The lubricating component 4 includes a first positioning plate 41 and a plurality of lubricating columns 43. One ends of the plurality of lubricating columns 43 are fixedly communicated with one side of the first positioning plate 41 facing each other, and second positioning plates 44 are fixedly installed at the other ends of the plurality of lubricating columns 43.

[0031] The bearing base 2 includes a first support ring 21, a second support ring 22, and a third support ring 23. The bottom end of the first support ring 21 is fixedly connected to the top end of the second support ring 22. The bottom end of the second support ring 22 is fixedly connected to the top end of the third support ring 23. The inside of the first support ring 21 is connected to the lubricating component 4. The first support ring 21, the second support ring 22, and the third support ring 23 play a supporting role.

[0032] A plurality of first lubricating holes 42 are formed on the surface of the first positioning plate 41, and a plurality of second lubricating holes 45 are formed on the surface of the second positioning plate 44. The formation of the lubricating holes facilitates the flow of the lubricant and improves the lubricity of the self-lubricating bearing.

[0033] One end of the first positioning plate 41 away from the lubricating column 43 is fixedly connected to the bearing base 2, and one end of the second positioning plate 44 away from the lubricating column 43 is fixedly connected to the connecting component 5. The lubricating component 4 is installed on the bearing base 2 through the first positioning plate 41, and the lubricating component 4 is connected to the connecting component 5 through the second positioning plate 44.

[0034] A number of lubricating columns 43 each include a lubricating shell 4301 and two limiting rings 4303. A length shell 4304 is fixedly installed inside the lubricating shell 4301. The two ends of the length shell 4304 are fixedly communicated with the opposite ends of the two limiting rings 4303 respectively. A porous conveying column 4308 is arranged inside the length shell 4304. A filter element shell 4309 is arranged outside the porous conveying column 4308. A number of filter screens 4305 are fixedly installed on the surface of the length shell 4304. A number of oil storage grooves 4306 are formed inside the length shell 4304. A number of balls 4307 are slidably connected inside the number of oil storage grooves 4306. The lubricant is conveyed to the filter element shell 4309 through the porous conveying column 4308. Then the redundant lubricant is stored in the balls 4307. Finally, the lubricant is discharged for use after being purified by the filter screens 4305.

[0035] On both sides of the connection between the lubricating shell 4301 and the length shell 4304, a first sealing piece 4302 and a second sealing piece 4310 are sleeved respectively. The two ends of the lubricating shell 4301 are connected with a first positioning plate 41 and a second positioning plate 44 respectively. The first sealing piece 4302 and the second sealing piece 4310 fill the gap between the lubricating shell 4301 and the length shell 4304, improving the sealing performance of the lubricating column 43 itself.

[0036] The connecting component 5 includes an inner ring 51 and an outer ring 52. The outer side of the inner ring 51 is connected with the inner side of the outer ring 52. One end of the inner ring 51 is connected with one end of a rolling element 53. The end of the rolling element 53 far from the inner ring 51 is connected with the lubricating component 4. The inner ring 51 is usually fixed on a journal, and the inner ring 51 rotates together with the shaft. There are grooves for the steel balls or rollers to roll on the outer surface of the inner ring 51, which are called inner grooves or inner raceways. The outer ring 52 is usually fixed on a bearing seat or the housing of a machine, playing a role in supporting the rolling element 53. There are also grooves for the steel balls or rollers to roll on the inner surface of the outer ring 52, which are called inner grooves or inner raceways. Each set of bearings is equipped with one or several groups of rolling elements 53, which are installed between the inner ring 51 and the outer ring 52, playing a role in rolling and transmitting forces. The rolling element 53 is a component that bears the load, and its shape, size and quantity determine the load-bearing capacity and high-speed operation performance of the bearing.

[0037] The preparation process of a high-temperature resistant inlaid self-lubricating bearing of the present invention includes the following steps:

[0038] Step 1. Prepare the bearing base 2: Select the metal and non-metal raw materials for preparing the first support ring 21 and sequentially put them into the mold for preparing the first support ring 21. After injection molding, demold to obtain the required first support ring 21. Select the metal and non-metal raw materials for preparing the second support ring 22 and sequentially put them into the mold for preparing the second support ring 22. After injection molding, demold to obtain the required second support ring 22. Select the metal and non-metal raw materials for preparing the third support ring 23 and sequentially put them into the mold for preparing the third support ring 23. After injection molding, demold to obtain the required third support ring 23, and then weld the first support ring 21, the second support ring 22 and the third support ring 23 together in sequence;

[0039] Step 2. Prepare the lubrication component 4: After assembling the lubrication column 43 between the first positioning plate 41 and the second positioning plate 44, select graphite, molybdenum disulfide, PTFE or lead as the lubricant and inject it into the lubrication component 4 to complete its preparation;

[0040] Step 3. Prepare the connection component 5: Assemble the inner ring 51 and the rolling elements 53 together, and then install the outer ring 52 on the outside of the inner ring 51 to complete the preparation of the connection component 5;

[0041] Step 4. Bearing assembly: Assemble the completed bearing base 2, lubrication component 4 and connection component 5 together.

[0042] The metals for preparing the first support ring 21 and the third support ring 23 in Step 1 are specifically carbon steel, copper alloy, aluminum alloy and cast iron. The non-metals for preparing the first support ring 21 and the third support ring 23 in Step 1 are specifically plastics, rubbers and hardwoods. The metals for preparing the second support ring 22 in Step 1 are specifically copper alloy, aluminum alloy, zinc alloy and babbit alloy. The non-metals for preparing the second support ring 22 in Step 1 are specifically PTFE, PEEK, POM, PA, PI and phenolic resin.

[0043] In the present invention, the metal and non-metal raw materials for preparing the first support ring 21 are sequentially placed in the mold for preparing the first support ring 21, and after injection molding, the required first support ring 21 is obtained by demolding; the metal and non-metal raw materials for preparing the second support ring 22 are sequentially placed in the mold for preparing the second support ring 22, and after injection molding, the required second support ring 22 is obtained by demolding; and the metal and non-metal raw materials for preparing the third support ring 23 are sequentially placed in the mold for preparing the third support ring 23, and after injection molding, the required third support ring 23 is obtained by demolding. Then, the first support ring 21, the second support ring 22, and the third support ring 23 are welded together in sequence. The metal for preparing the first support ring 21 and the third support ring 23 is specifically carbon steel, copper alloy, aluminum alloy, and cast iron. The non-metal for preparing the first support ring 21 and the third support ring 23 is specifically plastic, rubber, and hardwood. The metal for preparing the second support ring 22 is specifically copper alloy, aluminum alloy, zinc alloy, and babbit alloy. The non-metal for preparing the second support ring 22 is specifically PTFE, PEEK, POM, PA, PI, and phenolic resin. After assembling the lubricating column 43 between the first positioning plate 41 and the second positioning plate 44, graphite, molybdenum disulfide, PTFE, or lead is selected as the lubricant and injected into the lubricating assembly 4 to complete its preparation. The inner ring 51 and the rolling elements 53 are assembled together, and then the outer ring 52 is installed on the outside of the inner ring 51 to complete the preparation of the connecting assembly 5. The prepared bearing base 2, lubricating assembly 4, and connecting assembly 5 are assembled together.

[0044] Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements for some of the technical features. Any modifications, equivalent replacements, improvements, 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 high temperature resistant inlaid self-lubricating bearing, comprising a bearing body (1), characterized in that: The bearing body (1) comprises a bearing base (2) and a lubrication assembly (4), the interior of the bearing base (2) is connected to the bottom end of the lubrication assembly (4), a connection assembly (5) is installed at the top end of the lubrication assembly (4), a sealing ring (3) is sleeved on the outer side of the connection between the bearing base (2) and the lubrication assembly (4), and the lubrication assembly (4) comprises a first positioning plate (41) and a plurality of lubrication columns (43), one end of each of the lubrication columns (43) is fixedly connected to a side directly opposite to the first positioning plate (41), and the other end of each of the lubrication columns (43) is fixedly installed with a second positioning plate (44).

2. A high temperature resistant inlaid self-lubricating bearing according to claim 1, characterized in that: The bearing base (2) comprises a first support ring (21), a second support ring (22) and a third support ring (23); the bottom end of the first support ring (21) is fixedly connected to the top end of the second support ring (22); the bottom end of the second support ring (22) is fixedly connected to the top end of the third support ring (23); and the interior of the first support ring (21) is connected to a lubrication assembly (4).

3. A high temperature resistant inlaid self-lubricating bearing according to claim 1, characterized in that: A plurality of first lubrication holes (42) are formed on the surface of the first positioning plate (41), and a plurality of second lubrication holes (45) are formed on the surface of the second positioning plate (44).

4. A high temperature resistant inlaid self-lubricating bearing according to claim 1, characterized in that: One end of the first positioning plate (41) away from the lubricating column (43) is fixedly connected to the bearing base (2), and one end of the second positioning plate (44) away from the lubricating column (43) is fixedly connected to the connecting assembly (5).

5. The high temperature resistant inlaid self-lubricating bearing according to claim 1, characterized in that: Several of the lubricating columns (43) include a lubricating shell (4301) and two limiting rings (4303); a length shell (4304) is fixedly installed inside the lubricating shell (4301); two ends of the length shell (4304) are respectively fixedly connected to the opposite ends of the two limiting rings (4303); a porous conveying column (4308) is arranged inside the length shell (4304); a filter element shell (4309) is arranged outside the porous conveying column (4308); several filters (4305) are fixedly installed on the surface of the length shell (4304); several oil storage grooves (4306) are opened inside the length shell (4304); several balls (4307) are slidably connected inside the several oil storage grooves (4306).

6. A high temperature resistant inlaid self-lubricating bearing according to claim 5, characterized in that: A first sealing sheet (4302) and a second sealing sheet (4310) are respectively sleeved on both sides of the connection between the lubricating shell (4301) and the length shell (4304), and two ends of the lubricating shell (4301) are respectively connected to the first positioning plate (41) and the second positioning plate (44).

7. The high temperature resistant inlaid self-lubricating bearing according to claim 1, characterized in that: The connecting assembly (5) comprises an inner ring (51) and an outer ring (52), the outer side of the inner ring (51) is connected to the inner side of the outer ring (52), one end of the inner ring (51) is connected to one end of a rolling body (53), and the end of the rolling body (53) away from the inner ring (51) is connected to a lubrication assembly (4).

8. A process for preparing a high temperature resistant inlaid self-lubricating bearing according to any one of claims 1 to 7, characterized in that: The following steps are involved: Step 1, preparing the bearing base (2): selecting metal and non-metal raw materials for preparing the first support ring (21) and sequentially placing them into a mold for preparing the first support ring (21), and demolding them after injection molding to obtain the desired first support ring (21); selecting metal and non-metal raw materials for preparing the second support ring (22) and sequentially placing them into a mold for preparing the second support ring (22), and demolding them after injection molding to obtain the desired second support ring (22); and selecting metal and non-metal raw materials for preparing the third support ring (23) and sequentially placing them into a mold for preparing the third support ring (23), and demolding them after injection molding to obtain the desired third support ring (23); and sequentially welding the first support ring (21), the second support ring (22) and the third support ring (23); Step 2, preparing the lubricating component (4): after assembling the lubricating column (43) between the first positioning plate (41) and the second positioning plate (44), graphite, molybdenum disulfide, PTFE or lead is selected as a lubricant and injected into the lubricating component (4) to complete its preparation; Step 3, preparing the connection assembly (5): assembling the inner ring (51) and the rolling element (53) together, and then installing the outer ring (52) on the outer side of the inner ring (51) to complete the preparation of the connection assembly (5); Step 4: Bearing assembly: Assemble the prepared bearing base (2), lubrication assembly (4) and connection assembly (5) together.

9. The process for preparing a high temperature resistant inlaid self-lubricating bearing according to claim 8, characterized in that: The metal used to prepare the first support ring (21) and the third support ring (23) in step one is specifically carbon steel, copper alloy, aluminum alloy and cast iron; the non-metal used to prepare the first support ring (21) and the third support ring (23) in step one is specifically plastic, rubber and hardwood; the metal used to prepare the second support ring (22) in step one is specifically copper alloy, aluminum alloy, zinc alloy and babbitt alloy; the non-metal used to prepare the second support ring (22) in step one is specifically PTFE, PEEK, POM, PA, PI and phenolic resin.

Images