CN112160982B - Maintenance-free bearing for agricultural harvester and manufacturing method thereof - Google Patents
Maintenance-free bearing for agricultural harvester and manufacturing method thereof Download PDFInfo
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- CN112160982B CN112160982B CN202011196569.1A CN202011196569A CN112160982B CN 112160982 B CN112160982 B CN 112160982B CN 202011196569 A CN202011196569 A CN 202011196569A CN 112160982 B CN112160982 B CN 112160982B
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- bearing seat
- end cover
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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
- F16C19/00—Bearings with rolling contact, for exclusively rotary movement
- F16C19/02—Bearings with rolling contact, for exclusively rotary movement with bearing balls essentially of the same size in one or more circular rows
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- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01D—HARVESTING; MOWING
- A01D69/00—Driving mechanisms or parts thereof for harvesters or mowers
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23P—METAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS
- B23P15/00—Making specific metal objects by operations not covered by a single other subclass or a group in this subclass
- B23P15/003—Making specific metal objects by operations not covered by a single other subclass or a group in this subclass bearings
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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
- F16C33/00—Parts of bearings; Special methods for making bearings or parts thereof
- F16C33/30—Parts of ball or roller bearings
- F16C33/38—Ball cages
- F16C33/40—Ball cages for multiple rows of balls
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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
- 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
- F16C33/6681—Details of distribution or circulation inside the bearing, e.g. grooves on the cage or passages in the rolling elements
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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
- F16C33/00—Parts of bearings; Special methods for making bearings or parts thereof
- F16C33/72—Sealings
- F16C33/723—Shaft end sealing means, e.g. cup-shaped caps or covers
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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
- F16C33/00—Parts of bearings; Special methods for making bearings or parts thereof
- F16C33/72—Sealings
- F16C33/76—Sealings of ball or roller bearings
- F16C33/78—Sealings of ball or roller bearings with a diaphragm, disc, or ring, with or without resilient members
- F16C33/7803—Sealings of ball or roller bearings with a diaphragm, disc, or ring, with or without resilient members suited for particular types of rolling bearings
- F16C33/7806—Sealings of ball or roller bearings with a diaphragm, disc, or ring, with or without resilient members suited for particular types of rolling bearings for spherical roller bearings
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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
- F16C35/00—Rigid support of bearing units; Housings, e.g. caps, covers
- F16C35/04—Rigid support of bearing units; Housings, e.g. caps, covers in the case of ball or roller bearings
- F16C35/06—Mounting or dismounting of ball or roller bearings; Fixing them onto shaft or in housing
- F16C35/061—Mounting or dismounting of ball or roller bearings; Fixing them onto shaft or in housing mounting a plurality of bearings side by side
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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
- F16C35/00—Rigid support of bearing units; Housings, e.g. caps, covers
- F16C35/04—Rigid support of bearing units; Housings, e.g. caps, covers in the case of ball or roller bearings
- F16C35/06—Mounting or dismounting of ball or roller bearings; Fixing them onto shaft or in housing
- F16C35/067—Fixing them in a housing
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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
- F16J—PISTONS; CYLINDERS; SEALINGS
- F16J15/00—Sealings
- F16J15/02—Sealings between relatively-stationary surfaces
- F16J15/06—Sealings between relatively-stationary surfaces with solid packing compressed between sealing surfaces
- F16J15/062—Sealings between relatively-stationary surfaces with solid packing compressed between sealing surfaces characterised by the geometry of the seat
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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
- F16C2220/00—Shaping
- F16C2220/02—Shaping by casting
- F16C2220/06—Shaping by casting in situ casting or moulding
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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
- F16C2223/00—Surface treatments; Hardening; Coating
- F16C2223/02—Mechanical treatment, e.g. finishing
- F16C2223/06—Mechanical treatment, e.g. finishing polishing
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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
- F16C2310/00—Agricultural machines
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- Environmental Sciences (AREA)
- Physics & Mathematics (AREA)
- Geometry (AREA)
- Rolling Contact Bearings (AREA)
Abstract
The application discloses a maintenance-free bearing for an agricultural harvester and a manufacturing method thereof. The method comprises the following steps: the method comprises the steps of processing an inner bearing seat and an outer bearing seat, processing a transmission shaft, processing a first bearing and a second bearing, processing an inner end cover and an outer end cover, and assembling the maintenance-free bearing. The manufacturing method has the advantages of greatly improving the strength and stability of the whole maintenance-free bearing, prolonging the service life of the maintenance-free bearing, reducing the friction force when the transmission shaft rotates, and further improving the stability and reliability when the hub rotates.
Description
Technical Field
The application relates to a maintenance-free bearing for an agricultural harvester and a manufacturing method thereof.
Background
The maintenance-free bearing refers to a rolling bearing which can stably work for a long time without maintenance from installation to failure, and has the excellent performances of maintenance-free, high performance, long service life, more environmental protection, reliability and durability.
The working environment of agricultural tillage machinery and compacting machinery is bad, most of rolling bearing assemblies used on traditional agricultural tillage machinery and compacting machinery directly use UCF outer spherical bearing blocks, but the bearing blocks cannot bear the bad working environment during soil preparation and compacting due to the simple sealing structure and single-row ball bearings, and the bearing blocks need to be replaced for many times in one tillage period, so that the actual working requirements cannot be met, and serious production time and cost are wasted.
Disclosure of Invention
The application aims to provide a maintenance-free bearing for an agricultural harvester and a technical scheme of a manufacturing method thereof, aiming at the defects of the prior art, the structure can greatly improve the strength and the stability of the whole maintenance-free bearing, prolong the service life of the maintenance-free bearing, reduce the friction force of a transmission shaft during rotation, and further improve the stability and the reliability of a hub during rotation.
In order to solve the technical problems, the application adopts the following technical scheme:
the maintenance-free bearing for the agricultural harvester is characterized in that: the transmission shaft is connected in the oil storage cavity through the first bearing and the second bearing, and two sides of the transmission shaft are respectively connected with the end parts of the inner bearing seat and the outer bearing seat through an inner end cover and an outer end cover; through the design of interior bearing frame and outer bearing frame, can improve the intensity and the stability of whole maintenance-free bearing greatly, compare in adopting unilateral to connect this structure more reliable and stable, prolonged the life of maintenance-free bearing, through the design of first bearing and second bearing, not only can reduce the frictional force when the transmission shaft rotates, and improved the stability of whole maintenance-free bearing, stability and reliability when further can improving the wheel hub rotation, oil storage intracavity can fill lubricating oil, because lubricating oil is in confined cavity can not overflow, good sealing performance has, inner end cover and outer end cover not only can play auxiliary support's effect by the transmission shaft, can realize oil storage chamber and seal moreover, reduce the noise of bearing during operation, reduce wearing and tearing.
Further, the first bearing and the second bearing all include the inner race, the outer race, keep the ware and ball, be provided with the shoulder on the transmission shaft, the inner race is located between two adjacent shoulders, outer race fixed connection is on the inner wall of inner bearing frame and outer bearing frame, keep the ware to be located between inner race and the outer race, ball evenly distributed is on the keep the ware, be provided with two rows of slots on the outer wall of inner race and the inner wall of outer race respectively symmetry, the ball is spacing in the slot, through the design of inner race, the outer race, keep ware and ball, stability and reliability when not only can improve the transmission shaft rotation can make in addition to produce relative rotation between transmission shaft and inner bearing frame and the outer bearing frame, keep the frictional force between inner race and the outer race can be reduced.
Further, the retainer comprises an annular retainer, positioning holes are uniformly formed in the annular retainer, the balls are matched with the positioning holes, a certain distance between two adjacent balls can be kept through the annular retainer, abrasion caused by mutual collision is avoided, and the positioning holes are used for limiting the balls.
Further, inner end cover and outer end cover all include end cover dish and first locating ring, on the outer circumference side of end cover dish was located to first locating ring, evenly be provided with the second mounting hole on the circumference of first locating ring, the tip medial surface of inner bearing frame and outer bearing frame is provided with the draw-in groove, first locating ring and draw-in groove assorted, the center of end cover dish is provided with the shaft hole, mechanical seal between shaft hole and the transmission shaft, first locating ring has improved the intensity and the stability of being connected between end cover dish and inner bearing frame or the outer bearing frame, the installation dismantlement of being convenient for, mechanical seal can seal the gap between end cover dish and the transmission shaft, prevent that lubricating oil from spilling over.
Further, evenly be provided with the boss on the medial surface of end cover dish, the outside of boss is provided with spacing, forms the cavity between spacing and interior bearing frame and the outer bearing frame, installs first sealing washer in the cavity, and the intensity of end cover dish can be improved in the design of boss, improves the anti axial impact force of inner end cover or outer end cover, and spacing carries out spacing fixed to first sealing washer.
Further, all be provided with the second holding ring on interior bearing frame and the outer bearing frame, be provided with second sealing washer and third sealing washer between two adjacent second holding rings, the second sealing washer is located the inboard of third sealing washer, can seal the junction between interior bearing frame and the outer bearing frame through the second sealing washer, prevents that the lubricating oil in the oil storage intracavity from leaking out, and the third sealing washer can carry out secondary seal, through the connection with agricultural harvester frame, improves sealing performance.
Further, one side of second holding ring is provided with first seal groove and second seal groove, and first seal groove is located the inboard of second seal groove, and first seal groove and second seal groove all are annular structure, have improved the stability and the reliability of first sealing washer and second sealing washer installation.
Further, the vertical section of the first sealing groove is U-shaped, the vertical section of the second sealing groove is a 1/4 circular arc section, and the design of the structure can meet the requirement of assembling a sealing ring with an H-shaped section and an O-shaped section, so that the sealing performance is improved.
Further, first mounting holes are uniformly formed in the inner bearing seat and the outer bearing seat, and bolts penetrate through the first mounting holes on two sides, so that the inner bearing seat, the outer bearing seat and the agricultural harvester frame can be fixedly connected, and the mounting and the dismounting are convenient.
The manufacturing method of the maintenance-free bearing for the agricultural harvester is characterized by comprising the following steps of:
1) Inner bearing pedestal and outer bearing pedestal processing
a. Firstly, determining the sizes of an inner bearing seat and an outer bearing seat according to design requirements, forming the inner bearing seat and the outer bearing seat which are required by casting molding, polishing the inner bearing seat and the outer bearing seat, improving the assembly precision and avoiding noise generated by the maintenance-free bearing during working;
b. then, clamping grooves are formed along the inner sides of the outer ends of the inner bearing seat and the outer bearing seat, and through holes are uniformly formed along the end faces, so that the through holes penetrate into the clamping grooves, the clamping grooves on the inner bearing seat and the outer bearing seat are ensured to be consistent in size, the inner end cover and the outer end cover are convenient to install, and the sealing effect of the maintenance-free bearing is improved;
c. then, a second positioning ring with matched sizes is arranged on one side of the inner bearing seat and the outer bearing seat which are connected with each other, and a first sealing groove and a second sealing groove are arranged on the end surface of the second positioning ring which is connected with each other, so that the first sealing groove is positioned on the inner side of the second sealing groove, the second sealing groove is arranged along the outer circumferential side surface of the second positioning ring, the second sealing ring and the third sealing ring are convenient to install, and the sealing performance of the inner bearing seat and the outer bearing seat when connected is improved;
d. finally, first mounting holes are uniformly formed along one end, connected with the inner bearing seat and the outer bearing seat, of the inner bearing seat and the first mounting holes on the outer bearing seat correspond to each other one by one, so that the whole maintenance-free bearing can be fixedly connected with a frame of an agricultural harvester;
2) Transmission shaft processing
a. Firstly, determining the size of a transmission shaft according to the design sizes of an inner bearing seat and an outer bearing seat, processing the corresponding transmission shaft, and polishing the outer surface of the transmission shaft;
b. then two groups of limiting assemblies are arranged along the set position on the transmission shaft, each group of limiting assemblies comprises two shaft shoulders with the same size, the distance between the two adjacent shaft shoulders is kept equal, and the stability and the reliability of the installation of the first bearing and the second bearing can be improved through the design of the shaft shoulders, so that the stability and the reliability of the maintenance-free bearing during operation are further improved;
3) First and second bearing machining
a. Firstly, determining the sizes of a first bearing and a second bearing according to the distance between a transmission shaft and an inner bearing seat and the distance between two adjacent shaft shoulders, and processing corresponding outer rings, inner rings and retainers;
b. then, the positions and the distances of the grooves on the outer ring and the inner ring are determined according to the positioning holes on the retainer, corresponding grooves are processed along the inner side surface of the outer ring and the outer side surface of the inner ring, and the accuracy of the installation of the first bearing and the second bearing is improved according to the positioning Kong Xuanqu on the retainer and the balls with proper sizes;
4) Inner end cover and outer end cover processing
a. Firstly, determining the sizes of an inner end cover and an outer end cover according to the sizes of clamping grooves on an inner bearing seat and an outer bearing seat, forming the required inner end cover and the required outer end cover through extrusion molding, and integrally forming an end cover disc and a first positioning ring, wherein the first positioning ring is positioned on the outer circumferential side surface of the end cover disc, so that the size of the first positioning ring is matched with the size of the clamping groove, and the connection stability between the end cover disc and the clamping groove is improved;
b. then corresponding shaft holes are formed along the center of the end cover plate according to the size of the transmission shaft, and second mounting holes matched with the first positioning rings are formed along the circumference of the first positioning rings according to the positions of the through holes on the clamping grooves;
c. the inner side surface of the end cover plate is uniformly provided with the reinforcing blocks, and the outer end surface of the reinforcing blocks is horizontally provided with the limit strips, so that the strength and the shock resistance of the end cover plate are improved;
5) Maintenance-free bearing assembly
a. Firstly, clamping the processed inner ring into two corresponding shaft shoulders along the axial direction of a transmission shaft for fixing, sleeving a retainer on the outer side of the corresponding inner ring through balls, and simultaneously, fixedly mounting the processed outer ring on the inner sides of an inner bearing seat and an outer bearing seat according to design requirements;
b. then splicing the inner bearing seat and the outer bearing seat, installing a second sealing ring in a first sealing groove on the connecting end surface, and simultaneously connecting a transmission shaft assembly provided with an inner ring with the inner bearing seat and the outer bearing seat to form an oil storage cavity so as to enable the first bearing and the second bearing to be connected and matched;
c. then, a first sealing ring is arranged at a set position inside the end part of the outer bearing seat, mechanical sealing is carried out along one side, close to the first sealing ring, of the transmission shaft, and meanwhile, the processed outer end cover is inserted into a clamping groove on the outer bearing seat, and the outer end cover and the outer bearing seat are fixedly connected through screws penetrating through the through holes and the second mounting holes;
c. finally, inverting the inner bearing seat and the outer bearing seat, enabling one side with the outer end cover to vertically downwards, injecting lubricating oil into the oil storage cavity from the port of the inner bearing seat, stopping injection after the lubricating oil reaches a set amount, installing a first sealing ring at a set position on the inner bearing seat, mechanically sealing one side of a transmission shaft close to the first sealing ring, simultaneously inserting the processed inner end cover into a clamping groove on the inner bearing seat, and enabling the inner end cover to fixedly connect with the inner bearing seat through a screw passing through a through hole and a second mounting hole;
d. the assembled bearing is assembled on the agricultural harvester, a third sealing ring is arranged in the agricultural harvester and the second sealing groove, meanwhile, the bearing and the agricultural harvester are fixedly connected through bolts passing through first mounting holes on the inner bearing seat and the outer bearing seat, one side of the transmission shaft, which is close to the outer end cover, is connected with a hub disc of the agricultural harvester, and one side of the transmission shaft, which is close to the inner end cover, is connected with a power output shaft of a motor of the agricultural harvester.
The manufacturing method of the maintenance-free bearing is simple in steps, the machining and assembling precision of the bearing is effectively improved, and the reliability of the whole maintenance-free bearing is greatly improved.
Due to the adoption of the technical scheme, the application has the following beneficial effects:
1. through the design of interior bearing frame and outer bearing frame, can improve intensity and stability of whole maintenance-free bearing greatly, compare in adopting unilateral to connect this structure more reliable and stable, prolonged maintenance-free bearing's life.
2. Through the design of first bearing and second bearing, not only can reduce the frictional force when the transmission shaft is rotatory, improved the stability of whole maintenance-free bearing moreover, stability and reliability when further can improve wheel hub rotation.
3. The lubricating oil can be filled in the oil storage cavity, and the lubricating oil cannot overflow in the closed cavity, so that the sealing performance is good.
4. The inner end cover and the outer end cover not only can play an auxiliary supporting role on the transmission, but also can realize the sealing of the oil storage cavity, reduce the noise of the bearing during working and reduce abrasion.
5. The manufacturing method of the maintenance-free bearing is simple in steps, the machining and assembling precision of the bearing is effectively improved, and the reliability of the whole maintenance-free bearing is greatly improved.
Description of the drawings:
the application is further described below with reference to the accompanying drawings:
FIG. 1 is an effect diagram of a maintenance-free bearing for an agricultural harvester and a method for manufacturing the maintenance-free bearing;
FIG. 2 is a schematic view of the structure of the inner and outer end caps of the present application;
FIG. 3 is a schematic view of a second positioning ring according to the present application;
fig. 4 is a schematic structural view of the holder in the present application.
In the figure: 1-an inner bearing seat; 2-an outer bearing seat; 3-a transmission shaft; 4-an inner end cap; 5-an outer end cap; 6, a shaft shoulder; 7-an inner ferrule; 8-a retainer; 9-ball; 10-an outer ferrule; 11-a first sealing ring; 12-clamping grooves; 13-an oil storage cavity; 14-a second sealing ring; 15-a third sealing ring; 16-a first mounting hole; 17-end cap disc; 18-shaft holes; 19-reinforcing blocks; 20-limiting strips; 21-a first positioning ring; 22-a second mounting hole; 23-a second positioning ring; 24-a first seal groove; 25-a second seal groove; 26-an annular cage; 27-positioning holes.
Detailed Description
It should be noted that, without conflict, the embodiments of the present application and features of the embodiments may be combined with each other. The application will be described in detail below with reference to the drawings in connection with embodiments.
In order that those skilled in the art will better understand the present application, a technical solution in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings in which it is apparent that the described embodiments are only some embodiments of the present application, not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the application without making any inventive effort, shall fall within the scope of the application.
It should be noted that the terms "first," "second," and the like in the description and claims of the present application and in the above-described figures are used for distinguishing between similar objects and not necessarily for describing a particular sequential or chronological order. Furthermore, the terms "comprise" and "have," as well as any variations thereof, are intended to cover a non-exclusive inclusion.
As shown in fig. 1 to 4, the maintenance-free bearing for an agricultural harvester according to the present application comprises an inner bearing seat 1, an outer bearing seat 2, a transmission shaft 3, a first bearing and a second bearing, wherein the first bearing is arranged in the inner bearing seat 1, the second bearing is arranged in the outer bearing seat 2, the first bearing and the second bearing both comprise an inner race 7, an outer race 10, a retainer 8 and balls 9, the transmission shaft 3 is provided with shoulders 6, the inner race 7 is arranged between two adjacent shoulders 6, the outer race 10 is fixedly connected to the inner walls of the inner bearing seat 1 and the outer bearing seat 2, the retainer 8 is arranged between the inner race 7 and the outer race 10, the balls 9 are uniformly distributed on the retainer 8, two rows of grooves are symmetrically arranged on the outer wall of the inner race 7 and the inner wall of the outer race 10, the balls 9 are limited in the grooves, and through the design of the inner race 7, the outer race 10, the retainer 8 and the balls 9, the stability and the reliability during rotation of the transmission shaft 3 can be improved, and the relative rotation between the transmission shaft 3 and the inner bearing seat 1 and the outer bearing seat 2 can be generated, and the retainer 8 can reduce friction between the inner race 7 and the outer race 10. The retainer 8 comprises an annular retainer 26, positioning holes 27 are uniformly formed in the annular retainer 26, the balls 9 are matched with the positioning holes 27, a certain distance between two adjacent balls 9 can be kept through the annular retainer 26, abrasion caused by mutual collision is avoided, and the positioning holes 27 are used for limiting the balls 9.
The inner bearing seat 1 and the outer bearing seat 2 are matched and connected to form an oil storage cavity 13, the transmission shaft 3 is connected in the oil storage cavity 13 through a first bearing and a second bearing, two sides of the transmission shaft 3 are respectively connected with the ends of the inner bearing seat 1 and the outer bearing seat 2 through an inner end cover 4 and an outer end cover 5, the inner end cover 4 and the outer end cover 5 respectively comprise an end cover disc 17 and a first positioning ring 21, the first positioning ring 21 is arranged on the outer circumferential side surface of the end cover disc 17, second mounting holes 22 are uniformly formed in the circumference of the first positioning ring 21, clamping grooves 12 are formed in the inner side surfaces of the ends of the inner bearing seat 1 and the outer bearing seat 2, the first positioning ring 21 is matched with the clamping grooves 12, a shaft hole 18 is formed in the center of the end cover disc 17, mechanical sealing is carried out between the shaft hole 18 and the transmission shaft 3, the strength and stability of connection between the end cover disc 17 and the inner bearing seat 1 or the outer bearing seat 2 are improved, the mechanical sealing can seal gaps between the end cover disc 17 and the transmission shaft 3 conveniently and prevent lubricating oil from overflowing. The reinforcing blocks 19 are uniformly arranged on the inner side surface of the end cover plate 17, the limiting strips 20 are arranged on the outer side of the reinforcing blocks 19, a cavity is formed between the limiting strips 20 and the inner bearing seat 1 and the outer bearing seat 2, the first sealing ring 11 is arranged in the cavity, the strength of the end cover plate 17 can be improved through the design of the reinforcing blocks 19, the axial impact force resistance of the inner end cover 4 or the outer end cover 5 is improved, and the limiting strips 20 limit and fix the first sealing ring 11. Through the design of interior bearing frame 1 and outer bearing frame 2, can improve the intensity and the stability of whole maintenance-free bearing greatly, compare in adopting unilateral to connect this structure more reliable and stable, prolonged the life of maintenance-free bearing, through the design of first bearing and second bearing, not only can reduce the frictional force when transmission shaft 3 is rotatory, and the stability of whole maintenance-free bearing has been improved, further stability and reliability when can improving the wheel hub rotation, can fill lubricating oil in the oil storage chamber 13, because lubricating oil is in confined cavity can not overflow, good sealing performance has, inner end cover 4 and outer end cover 5 not only can play auxiliary stay's effect to transmission shaft 3, moreover can realize oil storage chamber 13 seal, the noise of bearing during operation is reduced, reduce wearing and tearing.
The inner bearing seat 1 and the outer bearing seat 2 are both provided with second positioning rings 23, a second sealing ring 14 and a third sealing ring 15 are arranged between two adjacent second positioning rings 23, the second sealing ring 14 is positioned on the inner side of the third sealing ring 15, the joint between the inner bearing seat 1 and the outer bearing seat 2 can be sealed through the second sealing ring 14, lubricating oil in the oil storage cavity 13 is prevented from leaking out, the third sealing ring 15 can be secondarily sealed, and the sealing performance is improved through the connection with an agricultural harvester frame. One side of second holding ring 23 is provided with first seal groove 24 and second seal groove 25, and first seal groove 24 is located the inboard of second seal groove 25, and first seal groove 24 and second seal groove 25 all are annular structure, have improved the stability and the reliability of first sealing washer 11 and second sealing washer 14 installation. The vertical section of the first sealing groove 24 is U-shaped, the vertical section of the second sealing groove 25 is a 1/4 circular arc section, and the structure can meet the requirement of assembling a sealing ring with an H-shaped section and an O-shaped section, so that the sealing performance is improved.
The inner bearing seat 1 and the outer bearing seat 2 are uniformly provided with the first mounting holes 16, and the fixed connection between the inner bearing seat 1, the outer bearing seat 2 and the agricultural harvester frame can be realized through the first mounting holes 16 on the two sides of the inner bearing seat and the outer bearing seat through bolts, so that the inner bearing seat is convenient to mount and dismount.
The manufacturing method of the maintenance-free bearing for the agricultural harvester comprises the following steps:
1) The inner bearing seat 1 and the outer bearing seat 2 are processed
a. Firstly, determining the sizes of an inner bearing seat 1 and an outer bearing seat 2 according to design requirements, forming the required inner bearing seat 1 and the required outer bearing seat 2 through casting molding, polishing the inner bearing seat 1 and the outer bearing seat 2, improving the assembly precision and avoiding noise generated by the maintenance-free bearing during working;
b. then, clamping grooves 12 are formed along the inner sides of the outer ends of the inner bearing seat 1 and the outer bearing seat 2, through holes are uniformly formed along the end surfaces, the through holes penetrate into the clamping grooves 12, the clamping grooves 12 on the inner bearing seat 1 and the outer bearing seat 2 are ensured to be consistent in size, the inner end cover 4 and the outer end cover 5 are convenient to install, and the sealing effect of the maintenance-free bearing is improved;
c. then, a second positioning ring 23 with matched sizes is arranged on one side of the inner bearing seat 1 and the outer bearing seat 2, and a first sealing groove 24 and a second sealing groove 25 are arranged on the end surface of the second positioning ring 23, so that the first sealing groove 24 is positioned on the inner side of the second sealing groove 25, the second sealing groove 25 is arranged along the outer circumferential side surface of the second positioning ring 23, the second sealing ring 14 and the third sealing ring 15 are convenient to install, and the sealing performance of the inner bearing seat 1 and the outer bearing seat 2 in connection is improved;
d. finally, first mounting holes 16 are uniformly formed along one end, connected with the inner bearing seat 1 and the outer bearing seat 2, of the inner bearing seat 1 and the first mounting holes 16 on the outer bearing seat 2 are in one-to-one correspondence, so that the whole maintenance-free bearing is conveniently and fixedly connected with a frame of the agricultural harvester;
2) Processing of drive shafts 3
a. Firstly, determining the size of a transmission shaft 3 according to the design sizes of an inner bearing seat 1 and an outer bearing seat 2, processing the corresponding transmission shaft 3, and polishing the outer surface of the transmission shaft 3;
b. then two groups of limiting assemblies are arranged along the set position on the transmission shaft 3, each group of limiting assemblies comprises two shaft shoulders 6 with the same size, the distance between every two adjacent shaft shoulders 6 is kept equal, and the stability and the reliability of the first bearing and the second bearing can be improved through the design of the shaft shoulders 6, so that the stability and the reliability of the maintenance-free bearing during operation are further improved;
3) First and second bearing machining
a. Firstly, determining the sizes of a first bearing and a second bearing according to the distance between a transmission shaft 3 and an inner bearing seat 1 and an outer bearing seat 2 and the distance between two adjacent shaft shoulders 6, and processing corresponding outer rings 10, inner rings 7 and retainers 8;
b. then, the positions and the distances of the grooves on the outer ring 10 and the inner ring 7 are determined according to the positioning holes 27 on the retainer 8, corresponding grooves are processed along the inner side surface of the outer ring 10 and the outer side surface of the inner ring 7, and balls 9 with proper sizes are selected according to the positioning holes 27 on the retainer 8, so that the mounting accuracy of the first bearing and the second bearing is improved;
4) Inner end cover 4 and outer end cover 5 are processed
a. Firstly, the sizes of an inner end cover 4 and an outer end cover 5 are determined according to the sizes of clamping grooves 12 on an inner bearing seat 1 and an outer bearing seat 2, and the required inner end cover 4 and the required outer end cover 5 are formed through extrusion molding, so that an end cover disc 17 and a first positioning ring 21 are integrally formed, the first positioning ring 21 is positioned on the outer circumferential side surface of the end cover disc 17, the sizes of the first positioning ring 21 are ensured to be matched with the sizes of the clamping grooves 12, and the connection stability between the end cover disc 17 and the clamping grooves 12 is improved;
b. then corresponding shaft holes 18 are formed along the center of the end cover disc 17 according to the size of the transmission shaft 3, and second mounting holes 22 matched with the first positioning ring 21 are formed along the circumference of the first positioning ring according to the positions of the through holes on the clamping grooves 12;
c. the reinforcing blocks 19 are uniformly arranged on the inner side surface of the end cover disc 17, and the limit strips 20 are horizontally arranged on the outer end surface of the reinforcing blocks 19, so that the strength and the shock resistance of the end cover disc 17 are improved;
5) Maintenance-free bearing assembly
a. Firstly, clamping the machined inner ring 7 into two corresponding shaft shoulders 6 along the axial direction of a transmission shaft 3 for fixing, sleeving a retainer 8 on the outer side of the corresponding inner ring 7 through balls 9, and fixedly mounting the machined outer ring 10 on the inner sides of an inner bearing seat 1 and an outer bearing seat 2 according to design requirements;
b. then splicing the inner bearing seat 1 and the outer bearing seat 2, installing a second sealing ring 14 in a first sealing groove 24 on the connecting end surface, and simultaneously assembling the transmission shaft 3 assembled with the inner ring 7 into an oil storage cavity 13 formed by connecting the inner bearing seat 1 and the outer bearing seat 2, so that the first bearing and the second bearing are connected and matched;
c. then, a first sealing ring 11 is arranged at a set position inside the end part of the outer bearing seat 2, mechanical sealing is carried out along one side, close to the first sealing ring 11, of the transmission shaft 3, and meanwhile, the processed outer end cover 5 is inserted into a clamping groove 12 on the outer bearing seat 2, and the outer end cover 5 and the outer bearing seat 2 are fixedly connected through a screw penetrating through a through hole and a second mounting hole 22;
c. finally, the inner bearing seat 1 and the outer bearing seat 2 are inverted, so that one side with the outer end cover 5 is vertically downward, lubricating oil is injected into the oil storage cavity 13 from the port of the inner bearing seat 1, after the lubricating oil reaches a set amount, the injection is stopped, the first sealing ring 11 is arranged at a set position on the inner bearing seat 1, mechanical sealing is carried out on one side of the transmission 3 close to the first sealing ring 11, meanwhile, the processed inner end cover 4 is inserted into the clamping groove 12 on the inner bearing seat 1, and the fixed connection between the inner end cover 4 and the inner bearing seat 1 is realized through the through hole and the second mounting hole 22 by the screw;
d. the assembled bearing is assembled on the agricultural harvester, a third sealing ring 15 is installed in the agricultural harvester and a second sealing groove 25, meanwhile, the bearing and the agricultural harvester are fixedly connected through bolts passing through first mounting holes 16 on the inner bearing seat 1 and the outer bearing seat 2, one side of a transmission shaft 3, which is close to the outer end cover 5, is connected with a hub disc of the agricultural harvester, and one side of the transmission shaft 3, which is close to the inner end cover 4, is connected with a power output shaft of a motor of the agricultural harvester.
The manufacturing method of the maintenance-free bearing is simple in steps, the machining and assembling precision of the bearing is effectively improved, and the reliability of the whole maintenance-free bearing is greatly improved.
The above is only a specific embodiment of the present application, but the technical features of the present application are not limited thereto. Any simple changes, equivalent substitutions or modifications made on the basis of the present application to achieve substantially the same technical effects are included in the scope of the present application.
Claims (6)
1. The maintenance-free bearing for the agricultural harvester is characterized in that: the transmission shaft is connected in the oil storage cavity through the first bearing and the second bearing, and two sides of the transmission shaft are respectively connected with the end parts of the inner bearing seat and the outer bearing seat through an inner end cover and an outer end cover; the first bearing and the second bearing comprise inner rings, outer rings, retainers and balls, shaft shoulders are arranged on the transmission shaft, the inner rings are arranged between two adjacent shaft shoulders, the outer rings are fixedly connected to the inner walls of the inner bearing seat and the outer bearing seat, the retainers are arranged between the inner rings and the outer rings, the balls are uniformly distributed on the retainers, two rows of grooves are symmetrically arranged on the outer walls of the inner rings and the inner walls of the outer rings respectively, and the balls are limited in the grooves; the inner bearing seat and the outer bearing seat are respectively provided with a second positioning ring, a second sealing ring and a third sealing ring are arranged between two adjacent second positioning rings, and the second sealing rings are positioned on the inner sides of the third sealing rings; a first sealing groove and a second sealing groove are formed in one side of the second positioning ring, the first sealing groove is located on the inner side of the second sealing groove, and the first sealing groove and the second sealing groove are of annular structures; the vertical section of the first sealing groove is U-shaped, and the vertical section of the second sealing groove is a 1/4 circular arc section.
2. The maintenance-free bearing for an agricultural harvester according to claim 1, wherein: the retainer comprises an annular retainer, positioning holes are uniformly formed in the annular retainer, and the balls are matched with the positioning holes.
3. The maintenance-free bearing for an agricultural harvester according to claim 1, wherein: the inner end cover with the outer end cover all includes end cover dish and first holding ring, first holding ring is located on the outer circumference side of end cover dish, evenly be provided with the second mounting hole on the circumference of first holding ring, the inner bearing frame with the tip medial surface of outer bearing frame is provided with the draw-in groove, first holding ring with draw-in groove assorted, the center of end cover dish is provided with the shaft hole, the shaft hole with mechanical seal between the transmission shaft.
4. A maintenance-free bearing for an agricultural harvester according to claim 3, wherein: the inner side surface of the end cover plate is uniformly provided with a reinforcing block, the outer side of the reinforcing block is provided with a limiting strip, a cavity is formed between the limiting strip and the inner bearing seat and between the limiting strip and the outer bearing seat, and a first sealing ring is installed in the cavity.
5. The maintenance-free bearing for an agricultural harvester according to claim 1, wherein: the inner bearing seat and the outer bearing seat are uniformly provided with first mounting holes.
6. A method of manufacturing a maintenance-free bearing for an agricultural harvester according to any one of claims 1 to 5, characterized by comprising the steps of:
1) Inner bearing pedestal and outer bearing pedestal processing
a. Firstly, determining the sizes of an inner bearing seat and an outer bearing seat according to design requirements, forming the inner bearing seat and the outer bearing seat which are required by casting molding, and polishing the inner bearing seat and the outer bearing seat;
b. then, clamping grooves are formed along the inner sides of the outer ends of the inner bearing seat and the outer bearing seat, and through holes are uniformly formed along the end surfaces, so that the through holes penetrate into the clamping grooves, and the sizes of the clamping grooves on the inner bearing seat and the outer bearing seat are consistent;
c. then, a second positioning ring with matched size is arranged on one side of the inner bearing seat and the outer bearing seat which are connected with each other, and a first sealing groove and a second sealing groove are arranged on the end surface of the second positioning ring which is connected with each other, so that the first sealing groove is positioned on the inner side of the second sealing groove, and the second sealing groove is arranged along the outer circumferential side surface of the second positioning ring;
d. finally, uniformly arranging first mounting holes along one end of the inner bearing seat connected with the outer bearing seat, so that the first mounting holes on the inner bearing seat and the outer bearing seat correspond to each other one by one;
2) Transmission shaft processing
a. Firstly, determining the size of a transmission shaft according to the design sizes of an inner bearing seat and an outer bearing seat, processing the corresponding transmission shaft, and polishing the outer surface of the transmission shaft;
b. then two groups of limiting assemblies are arranged along the set position on the transmission shaft, each group of limiting assemblies comprises two shaft shoulders with the same size, and the distance between every two adjacent shaft shoulders is kept equal;
3) First and second bearing machining
a. Firstly, determining the sizes of a first bearing and a second bearing according to the distance between a transmission shaft and an inner bearing seat and the distance between two adjacent shaft shoulders, and processing corresponding outer rings, inner rings and retainers;
b. then, the positions and the distances of the grooves on the outer ring and the inner ring are determined according to the positioning holes on the retainer, corresponding grooves are processed along the inner side surface of the outer ring and the outer side surface of the inner ring, and balls with proper sizes are positioned Kong Xuanqu on the retainer;
4) Inner end cover and outer end cover processing
a. Firstly, determining the sizes of an inner end cover and an outer end cover according to the sizes of clamping grooves on an inner bearing seat and an outer bearing seat, forming the inner end cover and the outer end cover which are required by extrusion molding, integrally molding an end cover disc and a first positioning ring, wherein the first positioning ring is positioned on the outer circumferential side surface of the end cover disc, and ensuring that the size of the first positioning ring is matched with the size of the clamping groove;
b. then corresponding shaft holes are formed along the center of the end cover plate according to the size of the transmission shaft, and second mounting holes matched with the first positioning rings are formed along the circumference of the first positioning rings according to the positions of the through holes on the clamping grooves;
c. uniformly mounting reinforcing blocks on the inner side surface of the end cover plate, and horizontally mounting limit strips on the outer end surfaces of the reinforcing blocks;
5) Maintenance-free bearing assembly
a. Firstly, clamping the processed inner ring into two corresponding shaft shoulders along the axial direction of a transmission shaft for fixing, sleeving a retainer on the outer side of the corresponding inner ring through balls, and simultaneously, fixedly mounting the processed outer ring on the inner sides of an inner bearing seat and an outer bearing seat according to design requirements;
b. then splicing the inner bearing seat and the outer bearing seat, installing a second sealing ring in a first sealing groove on the connecting end surface, and simultaneously connecting a transmission shaft assembly provided with an inner ring with the inner bearing seat and the outer bearing seat to form an oil storage cavity so as to enable the first bearing and the second bearing to be connected and matched;
c. then, a first sealing ring is arranged at a set position inside the end part of the outer bearing seat, mechanical sealing is carried out along one side, close to the first sealing ring, of the transmission shaft, and meanwhile, the processed outer end cover is inserted into a clamping groove on the outer bearing seat, and the outer end cover and the outer bearing seat are fixedly connected through screws penetrating through the through holes and the second mounting holes;
d. finally, inverting the inner bearing seat and the outer bearing seat, enabling one side with the outer end cover to vertically downwards, injecting lubricating oil into the oil storage cavity from the port of the inner bearing seat, stopping injection after the lubricating oil reaches a set amount, installing a first sealing ring at a set position on the inner bearing seat, mechanically sealing one side of a transmission shaft close to the first sealing ring, simultaneously inserting the processed inner end cover into a clamping groove on the inner bearing seat, and enabling the inner end cover to fixedly connect with the inner bearing seat through a screw passing through a through hole and a second mounting hole;
e. the assembled bearing is assembled on the agricultural harvester, a third sealing ring is arranged in the agricultural harvester and the second sealing groove, meanwhile, the bearing and the agricultural harvester are fixedly connected through bolts passing through first mounting holes on the inner bearing seat and the outer bearing seat, one side of the transmission shaft, which is close to the outer end cover, is connected with a hub disc of the agricultural harvester, and one side of the transmission shaft, which is close to the inner end cover, is connected with a power output shaft of a motor of the agricultural harvester.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202011196569.1A CN112160982B (en) | 2020-10-31 | 2020-10-31 | Maintenance-free bearing for agricultural harvester and manufacturing method thereof |
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| CN202011196569.1A CN112160982B (en) | 2020-10-31 | 2020-10-31 | Maintenance-free bearing for agricultural harvester and manufacturing method thereof |
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| CN112160982B true CN112160982B (en) | 2023-09-19 |
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| CN209385493U (en) * | 2018-12-19 | 2019-09-13 | 常熟得美零部件有限公司 | A kind of non-maintaining agricultural machinery hub bearing of integrated form |
| CN213511667U (en) * | 2020-10-31 | 2021-06-22 | 新昌县林泉轴承有限公司 | Maintenance-free bearing for agricultural harvester |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| WO2013179643A1 (en) * | 2012-05-31 | 2013-12-05 | 日野自動車株式会社 | Bearing structure |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105317831A (en) * | 2014-08-01 | 2016-02-10 | 斯凯孚公司 | Hub bearing unit, in particular for agricultural machinery and mounting device |
| CN108730334A (en) * | 2018-08-09 | 2018-11-02 | 常熟得美零部件有限公司 | The non-maintaining agricultural machinery hub bearing of integrated form |
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| CN112160982A (en) | 2021-01-01 |
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