CN115539488A - External thread high-speed rod end joint bearing - Google Patents

External thread high-speed rod end joint bearing Download PDF

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Publication number
CN115539488A
CN115539488A CN202211265714.6A CN202211265714A CN115539488A CN 115539488 A CN115539488 A CN 115539488A CN 202211265714 A CN202211265714 A CN 202211265714A CN 115539488 A CN115539488 A CN 115539488A
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CN
China
Prior art keywords
rod end
end body
joint ball
ball
joint
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN202211265714.6A
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Chinese (zh)
Inventor
姚勇伟
徐欣荣
姚灵伟
赖盛花
蓝全清
吴绍林
赖成武
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Zhejiang Jingjiu Bearing Industrial Co ltd
Original Assignee
Zhejiang Jingjiu Bearing Industrial Co ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Zhejiang Jingjiu Bearing Industrial Co ltd filed Critical Zhejiang Jingjiu Bearing Industrial Co ltd
Priority to CN202211265714.6A priority Critical patent/CN115539488A/en
Publication of CN115539488A publication Critical patent/CN115539488A/en
Pending legal-status Critical Current

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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C9/00—Bearings for crankshafts or connecting-rods; Attachment of connecting-rods
    • F16C9/04—Connecting-rod bearings; Attachments thereof
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C23/00—Bearings for exclusively rotary movement adjustable for aligning or positioning
    • F16C23/06—Ball or roller bearings
    • F16C23/08—Ball or roller bearings self-adjusting
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C33/00—Parts of bearings; Special methods for making bearings or parts thereof
    • F16C33/30—Parts of ball or roller bearings
    • F16C33/66—Special parts or details in view of lubrication
    • F16C33/6637—Special parts or details in view of lubrication with liquid lubricant
    • F16C33/664—Retaining the liquid in or near the bearing
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C33/00—Parts of bearings; Special methods for making bearings or parts thereof
    • F16C33/30—Parts of ball or roller bearings
    • F16C33/66—Special parts or details in view of lubrication
    • F16C33/6637—Special parts or details in view of lubrication with liquid lubricant
    • F16C33/6659—Details of supply of the liquid to the bearing, e.g. passages or nozzles

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Rolling Contact Bearings (AREA)

Abstract

The invention relates to an external thread high-speed rod end joint bearing which comprises a rod end body, a joint ball, a steel ball, a baffle and a nozzle tip. The inner side of the ear hole of the rod end body is spherical; the joint ball is assembled in the middle of the ear hole of the rod end body, two or more rows of steel balls are distributed between the joint ball and the inner spherical surface of the rod end body, and the steel balls are uniformly distributed in an outer raceway of the whole joint ball; one side of the steel ball is in contact with the inner spherical surface of the rod end body, and the other side of the steel ball is in contact with a raceway of the joint ball; two side surfaces of the rod end body are provided with baffle sheets; the rod end body is provided with an oil filling hole; the oil filling hole can be provided with internal threads, so that an oil nozzle is convenient to mount and is used when lubricating oil is filled in the use process; the handle part of the rod end body is provided with external threads.

Description

External thread high-speed rod end joint bearing
Technical Field
The invention relates to the field of bearings, in particular to an external thread high-speed rod end joint bearing.
Background
The structure of the existing rod end knuckle bearing is shown in FIG. 1: comprises a rod end body 1 and a built-in radial spherical plain bearing 2. The assembling mode is that the joint ball 201 and the self-lubricating material 203 are assembled, the three components form the radial spherical bearing 2 in a mode of assembling the outer ring 202, then the sliding gap between the joint ball 201 and the self-lubricating 203 is adjusted, and finally the built-in radial spherical bearing 2 is fixed into the rod end body 1 in a locking mode (shown in figure 2) to achieve the purposes of sliding and swinging.
The built-in radial spherical plain bearing 2 achieves the purposes of sliding and swinging by adjusting the sliding clearance between the spherical plain 201 and the self-lubricating 203 after being molded, the sliding clearance is difficult to adjust to an ideal degree, the small clearance can cause the phenomenon of local clamping stagnation or unsmooth swinging, the built-in spherical plain 201 can axially move when the clearance is too large, and the service life can be influenced when the clearance is too large or too small.
Because the built-in radial spherical plain bearing 2 is assembled in the through hole of the rod end body and is fixed on the rod end body 1 in a locking mode, the built-in radial spherical plain bearing 2 is easy to fall off when bearing a larger axial load (figure 2) in the use process by adopting the mode for fixing, mechanical faults and even accidents are caused, including casualties, and the use requirements of the higher axial load cannot be met.
The contact area between the joint ball 201 and the lubricating material 203 is large, the friction resistance is also large, the starting torque is also increased in the use process, and the corresponding motor power is also increased. The use cost is increased, and the energy waste is further caused.
The joint ball 201 and the self-lubricating material 203 are in a sliding friction state in the using process, and due to the fact that the contact area is large and the friction coefficient is high, sliding friction resistance between the joint ball 201 and the self-lubricating material 203 is large, under the working state of high-speed rotation, bearing abrasion is easily accelerated due to overhigh temperature, the phenomenon of blocking is caused, the service life of the joint ball is influenced, and the using requirement of high-speed operation cannot be met.
Disclosure of Invention
The invention aims to solve the problems and provides an external thread high-speed rod end joint bearing which has the advantages of being suitable for high-speed use environments and being low in starting torque. Because of the rolling friction structure, the friction coefficient is very low, the contact area of the steel ball with the inner joint ball and the spherical surface of the rod end body of the outer side is very small, and the actual measurement of the product at present reaches 12000 rpm because the high use rotating speed can be reached.
The steel ball, the joint ball and the inner spherical surface of the rod end body are all precisely processed and are quenching pieces, so that the steel ball, the joint ball and the inner spherical surface of the rod end body have good rigidity, and the problem that the rigidity of the self-lubricating material of the original self-lubricating rod end joint bearing is not enough is solved. And the wear-resistant and long-service life. Due to the special structural design, the steel ball can not fall out in a use state after being assembled into the joint ball and the rod end body, and can bear radial load and axial load.
In order to achieve the purpose, the invention is realized by the following technical scheme:
an external thread high-speed rod end joint bearing comprises a rod end body, a joint ball, a steel ball, a blocking piece and a nozzle tip. The inner side of the ear hole of the rod end body is spherical; the joint ball is assembled in the middle of the ear hole of the rod end body, two or more rows of steel balls are distributed between the joint ball and the inner spherical surface of the rod end body, and the steel balls are uniformly distributed in an outer raceway of the whole joint ball; one side of the steel ball is in contact with the inner spherical surface of the rod end body, and the other side of the steel ball is in contact with the raceway of the joint ball; two side surfaces of the rod end body are provided with baffle sheets; the rod end body is provided with an oil filling hole; the oil filling hole can be provided with internal threads, so that an oil nozzle is convenient to install and is used when lubricating oil is filled in the use process; the handle part of the rod end body is provided with external threads.
Furthermore, the inner side surface of the ear hole of the rod end body is spherical.
Furthermore, two sides of the ear hole are provided with baffle plate mounting grooves.
Furthermore, the side surface of the ball head of the rod end body is provided with an oil nozzle hole, a thread is arranged in the oil nozzle hole, and the oil nozzle hole is directly communicated with the inner spherical surface of the lug hole through an oil way.
Furthermore, the handle of the rod end body is provided with an external thread.
Furthermore, two symmetrical convex cylinders are arranged on two sides of the joint ball.
Furthermore, the outer ring of the joint ball is provided with two or more rows of track grooves.
Furthermore, the single track groove can be an arc track groove, or a double-arc track groove formed by two symmetrical arcs.
Compared with the prior art, the invention has the advantages that:
1. the invention changes the internal structure and the processing technology, two or more rows of raceway grooves on the outer ring of the joint ball adopt the grinding processing technology, the steel balls adopt the grinding technology and are separated to the section with the precision of 1 micron, the inner side spherical surface of the rod end body is also ground, all grinding processing precisions are high, the small tolerance of the inner diameter surface of the rod end body and the raceway of the joint ball generated by grinding processing can be adjusted by the steel balls with different sizes during assembly, and reasonable assembly is carried out to ensure the play value, so the rolling clearance is uniform, the rolling is smooth, and the precision is very high. The contact point of the steel ball with the joint ball has 2 forms, as shown in fig. 4 and 5. The structure of fig. 4 rotates at a higher speed and the structure of fig. 5 is more load bearing.
2. The invention adopts the matching installation of the rod end body, the inner steel ball and the joint ball, and because the inner side of the rod end body is of a spherical structure, the maximum size of the joint ball and the steel ball far exceeds the size of the opening part of the rod end body, the joint ball and the steel ball can not fall off when the joint ball and the steel ball are subjected to larger axial force in the use process, the risk that the joint ball falls off from the rod end body is structurally solved, the use safety of a product is further improved, and the use requirement of bearing high axial load is realized.
3. In the using process, the rolling and the swinging of the joint ball are transmitted by the steel ball between the joint ball and the rod end body, one side of the steel ball is in point-to-point contact with the spherical surface inside the shell, and the other side of the steel ball is in single-point or two-point contact with the raceway of the joint ball, so that the whole rolling contact area is reduced, the rolling friction coefficient in the using process is reduced, the rolling friction is only 1/40 to 1/60 of the sliding friction resistance, the starting torque in the using process is greatly reduced, and the using energy consumption is greatly reduced in the using process.
4. Only two or more rows of steel balls are arranged between the inner spherical surface of the rod end body and the joint ball, a large heat dissipation space exists between the inner spherical surface of the rod end body and the joint ball, the phenomena that the joint ball is blocked due to overheating in the using process are greatly reduced, and the service life is greatly prolonged.
5. The conventional rod end joint bearing adopts a sliding friction movement mode, while the invention adopts a rolling friction movement mode, and under the same load, the rolling friction is only 1/40 to 1/60 of the sliding friction resistance; the rolling friction resistance is low, the heat dissipation is fast, the requirements of high-speed rolling and swinging are met, and the two motions can be carried out simultaneously.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the embodiments or the description of the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
FIG. 1 is a schematic structural diagram of a conventional spherical plain bearing;
FIG. 2 is a schematic view of the assembly and axial force carrying of a prior art spherical plain bearing;
FIG. 3 is a schematic side view of the present invention;
FIG. 4 is a schematic front view of the present invention;
FIG. 5 is a schematic view of a single point contact point between a steel ball and a raceway;
fig. 6 is a schematic diagram of the point of double-point contact between the steel ball and the raceway.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived from the embodiments of the present invention by a person skilled in the art without any creative effort, should be included in the protection scope of the present invention.
As shown in fig. 3 to 6, the present embodiment discloses an external thread high-speed rod end joint bearing, which includes a rod end body 1, a joint ball 2, a steel ball 3, a baffle 4 and a nozzle tip 5. The inner side of the ear hole of the rod end body 1 is spherical; the joint ball 2 is assembled in the middle of an ear hole of the rod end body 1, two or more rows of steel balls 3 are distributed between the joint ball 2 and the inner spherical surface of the rod end body 1, and the steel balls 3 are uniformly distributed in an outer raceway of the whole joint ball 2; one side of the steel ball 3 is in contact with the inner side spherical surface of the rod end body 1, and the other side of the steel ball is in contact with the raceway of the joint ball 2; the two side surfaces of the rod end body 1 are provided with baffle plates 4; the rod end body 1 is provided with an oil filling hole; the oil filling hole can be internally threaded; the oil nozzle is convenient to install and is used when lubricating oil is filled in the using process. Through the change of the internal structure and the processing technology, the precision of the product is improved, the rolling is smoother, and the using effect of the product is improved; the axial load bearing capacity of the product is improved, and the use safety of the product is improved; the friction of the sliding block is changed into rolling friction, so that the starting torque is reduced, the use cost is reduced, and the energy consumption is reduced; the contact surface is reduced, the rolling resistance is reduced, the heating is small in the using process, the temperature is low, the heat dissipation is fast, and the service life of the product is prolonged; the contact area between the rolling bodies is small, the rolling resistance is low, the condition of high-speed operation is met, and the requirement of high-speed rotation is met.
When the invention is used:
1. the invention changes the internal structure and the processing technology, two rows of raceway grooves on the outer ring of the joint ball 2 adopt the grinding processing technology, the steel ball 3 adopts the grinding level technology and is separated to the precision size section of 1 micron, the inner side spherical surface of the rod end body 1 is also ground, all grinding processing precision is high, the small tolerance of the inner diameter surface of the rod end body and the raceway of the joint ball generated by grinding processing can be adjusted by the steel balls 3 with different sizes during assembly, and reasonable assembly is carried out to ensure the clearance value, so the rolling clearance is uniform, the rolling is smooth, and the precision is very high.
2. The invention adopts the matching installation of the rod end body 1 and the inner steel ball 3 and the joint ball 2, and because the inner side of the rod end body 1 is of a spherical structure, the maximum size of the joint ball 2 and the steel ball 3 is far beyond the size of the opening part of the rod end body 1, the joint ball 2 and the steel ball 3 can not fall off when the rod is subjected to larger axial force in the using process, the risk of separation is reduced, the use safety of the product is further improved, and the use requirement of bearing high axial load is also realized.
3. In the use, the roll and the swing of joint ball 2 are transmitted by steel ball 3 between joint ball 2 and rod end body 1, and steel ball 3 one side and the inboard sphere point contact of casing 1, and the raceway of opposite side and joint ball 2 adopts single point or two point contact, makes whole rolling contact area reduce, has reduced the rolling friction coefficient in the use, and the starting torque greatly reduced in the use has saved use cost simultaneously, has reduced the use energy consumption.
4. Only two or more rows of steel balls 3 are arranged between the inner spherical surface of the rod end body 1 and the joint ball 2, and a large heat dissipation space exists between the two, so that the phenomena of joint ball blocking and the like caused by overheating in the using process are greatly reduced, and the service life is greatly prolonged.
5. The contact area between the rolling bodies is small, the rolling resistance is low, the heat dissipation is fast, the condition of high-speed operation is met, and the requirement of high-speed rolling is met.

Claims (9)

1. The utility model provides a high-speed rod end joint bearing of external screw thread, includes that pole end body, joint ball, steel ball, separation blade and glib talker constitute characterized by: the inner side of the ear hole of the rod end body is spherical; the joint ball is assembled in the middle of the ear hole of the rod end body, two or more rows of steel balls are distributed between the joint ball and the inner spherical surface of the rod end body, and the steel balls are uniformly distributed in an outer raceway of the whole joint ball; one side of the steel ball is in contact with the inner spherical surface of the rod end body, and the other side of the steel ball is in contact with the raceway of the joint ball; the two side surfaces of the rod end body are provided with baffle plates; the rod end body is provided with an oil filling hole; the oil filling hole is provided with an internal thread for installing an oil nozzle, and the oil nozzle is used when lubricating oil is filled in the use process; the handle part of the rod end body is provided with external threads.
2. An externally threaded high speed rod end knuckle bearing according to claim 1, wherein: the inner side surface of the ear hole of the rod end body is spherical.
3. An externally threaded high speed rod end knuckle bearing according to claim 2, wherein: and two sides of the ear hole are provided with a baffle piece mounting groove.
4. An externally threaded high speed rod end knuckle bearing according to claim 3, wherein: the side surface of the ball head of the rod end body can be provided with an oil nozzle hole, threads are arranged in the oil nozzle hole, and the oil nozzle hole is directly communicated with the inner spherical surface of the lug hole through an oil way.
5. An externally threaded high speed rod end knuckle bearing according to claim 4, wherein: the handle of the rod end body is provided with an external thread.
6. An externally threaded high speed rod end knuckle bearing according to claim 5, wherein: two symmetrical convex cylinders are arranged on two sides of the joint ball.
7. An externally threaded high speed rod end knuckle bearing according to claim 6, wherein: two or more rows of track grooves are arranged on the outer side of the joint ball.
8. An externally threaded high speed rod end knuckle bearing according to claim 7, wherein: the single track groove can be an arc track groove or a double-arc track groove consisting of two symmetrical arcs.
9. An externally threaded high speed rod end knuckle bearing according to claim 8, wherein: two or more rows of steel balls are distributed between the joint ball and the rod end body as rolling bodies.
CN202211265714.6A 2022-10-17 2022-10-17 External thread high-speed rod end joint bearing Pending CN115539488A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202211265714.6A CN115539488A (en) 2022-10-17 2022-10-17 External thread high-speed rod end joint bearing

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202211265714.6A CN115539488A (en) 2022-10-17 2022-10-17 External thread high-speed rod end joint bearing

Publications (1)

Publication Number Publication Date
CN115539488A true CN115539488A (en) 2022-12-30

Family

ID=84735629

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202211265714.6A Pending CN115539488A (en) 2022-10-17 2022-10-17 External thread high-speed rod end joint bearing

Country Status (1)

Country Link
CN (1) CN115539488A (en)

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