CN112524167B - Drum-shaped gear coupling with axial large-expansion function - Google Patents
Drum-shaped gear coupling with axial large-expansion function Download PDFInfo
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- CN112524167B CN112524167B CN202011531367.8A CN202011531367A CN112524167B CN 112524167 B CN112524167 B CN 112524167B CN 202011531367 A CN202011531367 A CN 202011531367A CN 112524167 B CN112524167 B CN 112524167B
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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
- F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
- F16D3/00—Yielding couplings, i.e. with means permitting movement between the connected parts during the drive
- F16D3/02—Yielding couplings, i.e. with means permitting movement between the connected parts during the drive adapted to specific functions
- F16D3/06—Yielding couplings, i.e. with means permitting movement between the connected parts during the drive adapted to specific functions specially adapted to allow axial displacement
- F16D3/065—Yielding couplings, i.e. with means permitting movement between the connected parts during the drive adapted to specific functions specially adapted to allow axial displacement by means of 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
- F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
- F16D3/00—Yielding couplings, i.e. with means permitting movement between the connected parts during the drive
- F16D3/16—Universal joints in which flexibility is produced by means of pivots or sliding or rolling connecting parts
- F16D3/18—Universal joints in which flexibility is produced by means of pivots or sliding or rolling connecting parts the coupling parts (1) having slidably-interengaging teeth
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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
- F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
- F16D3/00—Yielding couplings, i.e. with means permitting movement between the connected parts during the drive
- F16D3/84—Shrouds, e.g. casings, covers; Sealing means specially adapted therefor
- F16D3/843—Shrouds, e.g. casings, covers; Sealing means specially adapted therefor enclosed covers
- F16D3/848—Shrouds, e.g. casings, covers; Sealing means specially adapted therefor enclosed covers allowing relative movement of joint parts due to sliding between parts of the 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
- F16N—LUBRICATING
- F16N1/00—Constructional modifications of parts of machines or apparatus for the purpose of lubrication
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- General Engineering & Computer Science (AREA)
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Abstract
The invention discloses a drum-shaped gear coupling with an axial large telescopic function, which comprises a roller end component at the left end, a driving end component at the right end and a middle telescopic transmission shaft component; the telescopic transmission shaft assembly comprises a transition shaft sleeve in the middle of the left telescopic shaft, a right transmission shaft and balls, one end of the telescopic shaft is connected with the roller end assembly, the outer circle of the other end of the telescopic shaft is processed into an external spline, and an inner hole is provided with a spring assembly; the one end and the transmission shaft of transition axle sleeve are connected, and the transmission shaft is connected with the drive end subassembly, and the transition axle sleeve other end is the internal spline hole, has seted up a plurality of circulation slides on its circumference lateral wall, all sets up a plurality of balls in every circulation slide, and the circulation slide three in the slot part of ball, the telescopic shaft external splines, the transition axle sleeve forms the ball spline pair. The axial telescopic position of the drum-shaped gear coupling adopts a ball spline pair transmission scheme, so that the drum-shaped gear coupling has an axial large telescopic function and good lubricating performance.
Description
Technical Field
The invention relates to the technical field of lubrication of drum-shaped gear couplings in steel rolling machinery, in particular to a crowned tooth coupling with axial large telescopic displacement and a lubrication system thereof.
Background
The crowned tooth coupling is composed of two pairs of inner gear rings and outer crowned gears which are meshed with each other, the outer gear has a certain crowned tooth shape, and small-amplitude angular displacement and axial displacement are allowed to occur between the inner gear rings and the crowned gears, so that a driving shaft and a driven shaft which are connected with two ends of the coupling simultaneously generate deflection motion in the rotating process. The unique self-compensating inter-shaft inclination angle and axial displacement of the crowned tooth coupling can be adjusted, so that the crowned tooth coupling is widely applied to heavy mechanical equipment such as steel rolling machinery and rail transit.
In a steel rolling production line, when the distance between two connecting shafts which are used for transmission is uncertain, the crowned tooth coupling is required to have the function of large axial displacement and expansion, so that long-distance power transmission can be met, and meanwhile, the axial displacement can be freely adjusted in a large range. In a common crowned gear coupling, a drum gear at a movable end is matched with an inner gear ring through a gear pair, and the crowned gear slides in long teeth in the inner gear ring to adjust axial displacement between two connecting shafts. Because the gear pair contact form is point contact, the gear pair has larger contact stress in the axial sliding process, and the gear surface abrasion phenomenon is easy to occur. Meanwhile, the axial length of the gear teeth of the inner gear ring is limited, the moving distance of the drum-shaped gear in the inner gear ring is limited, the telescopic range of the connecting shaft is small, and the application occasions of the drum-shaped gear in the production field of steel rolling machinery are greatly limited.
Patent CN211423204U discloses a long telescopic crowned tooth coupling, in which an inner gear ring is connected with a connecting shaft by a tooth-type spline pair, the tooth-type spline pair connection is composed of an inner spline and an outer spline, both the inner spline and the outer spline are multi-tooth parts, the spline on the inner cylindrical surface is an inner spline, and the spline on the outer cylindrical surface is an outer spline; the inner gear ring moves telescopically along the connecting shaft, and the connecting shaft transmits torque through the spline pair to drive the inner gear ring to rotate. The crowned tooth coupling spline pair has larger contact area and small contact stress in the telescopic process, and the defect of axial sliding of the gear pair is overcome; however, because the axial distance of the spline auxiliary shaft is long, lubricating oil supplied from the end face of the spline auxiliary shaft is difficult to enter between the contact surfaces, the lubricating effect is poor, and the phenomenon of serious abrasion of the contact surfaces cannot be avoided.
Patent CN110873129A discloses a telescopic crowned tooth coupling with oil-gas lubrication function, the axial telescopic position of the coupling still adopts tooth-type spline pair connection, and the phenomenon of tooth surface abrasion in patent CN211423204U is also existed; in addition, the coupler adopts an oil-gas lubrication mode, a plurality of long and thin oil-gas through holes are required to be formed in the connecting shaft, the mechanical strength of the shaft is weakened, and meanwhile, due to the fact that the machining difficulty of the long and thin through holes is large, the hole axis is not aligned after machining, and therefore eccentricity, vibration and even scrapping occur when the shaft rotates, and the transmission precision and the service life of the coupler are affected.
In summary, in order to meet the actual requirement of large-range adjustable power transmission distance in a steel rolling production line, a novel axial large-telescopic crowned tooth coupler needs to be developed urgently, and when the axial large-telescopic function of the coupler is realized, the lubricating and abrasion problems of a kinematic pair in a large telescopic process are important.
Disclosure of Invention
The invention aims to solve the problem of providing a drum-shaped gear coupling, wherein the axial telescopic position of the drum-shaped gear coupling adopts a ball spline pair transmission scheme, so that the drum-shaped gear coupling has an axial large telescopic function and good lubricating performance. Meanwhile, the coupler lubricating system adopts a sectional grease lubricating mode, so that the lubricating quality and the transmission part abrasion defect are effectively improved, and the working requirement of metallurgical transmission equipment is met.
The invention relates to a drum-shaped gear coupling with an axial large telescopic function, which comprises a roller end component at the left end, a driving end component at the right end and a telescopic transmission shaft component in the middle, wherein two ends of the telescopic transmission shaft component are respectively connected with the roller end component and the driving end component; the telescopic transmission shaft assembly comprises a transition shaft sleeve in the middle of the left telescopic shaft, a right transmission shaft and balls, one end of the telescopic shaft is connected with the roller end assembly, the outer circle of the other end of the telescopic shaft is processed into an external spline, and an inner hole is provided with a spring assembly; the one end and the transmission shaft of transition axle sleeve are connected, and the transmission shaft is connected with the drive end subassembly, and the transition axle sleeve other end is the internal spline hole, has seted up a plurality of circulation slides on its circumference lateral wall, all sets up a plurality of balls in every circulation slide, and the circulation slide three in the slot part of ball, the telescopic shaft external splines, the transition axle sleeve forms the ball spline pair.
Furthermore, the ball slides in the circulation slide way of transition axle sleeve, and the ball that the circulation slide way outside exposes imbeds simultaneously in the spline groove of telescopic shaft.
Furthermore, circulation slideways are uniformly distributed on the transition shaft sleeve, the positions of the circulation slideways correspond to the positions of the groove parts of the external splines on the telescopic shaft, and the number of the circulation slideways is consistent with that of the grooves of the external splines on the telescopic shaft.
Furthermore, the external splines at the right end of the telescopic shaft are uniformly provided with 4-12 spline grooves along the circumferential direction, the circumferential side wall of the transition shaft sleeve is uniformly provided with 4-12 circulating slideways, the number of balls in each circulating slideway is 10-24, and the diameter of each ball is 10-24 mm.
Furthermore, the telescopic transmission shaft assembly also comprises a limiting device, and the limiting device comprises a protective cover and a limiting ring; the small hole at the left end of the protective cover is sleeved on the small excircle at the left end of the telescopic shaft, and a sealing ring is arranged on the contact surface of the small hole and the small excircle; the big hole at the right end of the protective cover is sleeved on the excircle of the transition shaft sleeve, the contact surface of the big hole and the transition shaft sleeve is provided with a sealing ring, and the protective cover is fixed on the transition shaft sleeve through a fastener; the limiting ring is arranged in a large inner hole formed by the transition shaft sleeve and the transmission shaft and is fixedly connected with the transmission shaft.
Furthermore, the drum-shaped gear coupling also comprises a sectional type lubricating system, wherein the sectional type lubricating system comprises a telescopic shaft, a transition shaft sleeve and a transmission shaft which are respectively lubricated independently, a radial grease inlet hole I, a transverse grease inlet hole and a radial grease inlet hole II are arranged on the telescopic shaft, the radial grease inlet hole I is a through hole on the small excircle of the left section of the telescopic shaft, one end of the transverse grease inlet hole is communicated with the left end surface of the telescopic shaft, and the other end of the transverse grease inlet hole is communicated with the radial grease inlet hole I; the radial grease inlet hole II is arranged at the left end of the spline part of the telescopic shaft, and the inner side and the outer side of the radial grease inlet hole II are respectively provided with an inner hole and an outer circle of the telescopic shaft; the left section of the side wall of the protective cover is provided with a radial grease inlet hole III; and the radial grease inlet hole IV is arranged on the small excircle of the right section of the transmission shaft.
Furthermore, sectional type lubricating system still includes radial grease discharging hole, and radial grease discharging hole sets up on the transition axle sleeve, and its inside and outside is opened in the hole and the excircle of transition axle sleeve respectively.
Further, grease is respectively and independently fed into the telescopic shaft on the left side of the coupler, the transition shaft sleeve in the middle and the transmission shaft on the right side of the coupler, and a roller end assembly on the left side, a large telescopic position in the middle and a driving end assembly on the right side are respectively lubricated: after lubricating grease is supplied from a radial grease inlet hole III on the protective cover, the lubricating grease enters a spline groove of the telescopic shaft and is rolled into the whole ball spline pair through the rotation of a ball to lubricate a middle large telescopic position, and meanwhile, the lubricating grease enters an inner hole lubricating spring assembly through a radial grease inlet hole II on the telescopic shaft; lubricating grease enters the transverse grease inlet hole through the radial grease inlet hole I on the telescopic shaft and is discharged from the left end of the transverse grease inlet hole, so that the left roller end assembly is lubricated; and the lubricating grease enters the inner hole of the transmission shaft through the radial grease inlet hole IV on the transmission shaft, so that the right driving end assembly is lubricated.
Furthermore, when the balls are installed, the balls on the outer side of the slide way are positioned by means of the viscosity action of lubricating grease, and the kinematic viscosity range of the lubricating grease is 8-22 mm2/s。
Further, the roller end assembly is arranged at the left end of the telescopic shaft and comprises a roller end inner tooth shaft sleeve, a roller end outer tooth shaft sleeve, a connecting disc and a roller end gland; the roller end internal tooth shaft sleeve and the roller end external tooth shaft sleeve are connected through a gear pair, and the external tooth shaft sleeve is fixedly arranged on the telescopic shaft; the connecting disc is arranged in a hole of the roller end inner tooth shaft sleeve, the left end of the connecting disc is fixedly connected with the roller end inner tooth shaft sleeve, and the right end of the connecting disc is tightly pressed on the left end surface of the telescopic shaft; the roller end gland is sleeved on a small excircle at the left end of the telescopic shaft, a sealing ring is arranged between contact surfaces, and the left end of the roller end gland is fixedly connected with the right end surface of the roller end internal tooth shaft sleeve; the driving end assembly is arranged at the right end of the transmission shaft and comprises a driving end external tooth shaft sleeve, and the driving end external tooth shaft sleeve is sleeved on the transmission shaft and is fixedly connected with the transmission shaft.
The crowned tooth coupling has the advantages that: the axial telescopic position adopts ball spline pair transmission, single-point contact of a gear pair during axial telescopic of a traditional coupler is replaced by multipoint contact between a ball group and a spline shaft, sliding friction of the gear pair or a tooth-type spline pair during axial telescopic of the traditional coupler is replaced by rolling friction between the ball group and the spline shaft, and the contact stress and the rolling friction force during the axial sliding process of the ball spline pair are small while the axial large telescopic function and the torque transmission function of the coupler are realized, so that the abnormal abrasion phenomenon is avoided; secondly, when the ball spline pair stretches out and draws back axially, the ball groups in the ball spline pair rotate circularly, the adjacent balls rotate and simultaneously transfer lubricating grease, and inlet lubricating grease is coiled into the whole ball spline pair; the lubricating method overcomes the defects that the tooth-type spline pair is difficult to enter oil liquid, the effective lubricating area is small and the like due to long axial distance, large contact area and small contact clearance; and thirdly, grease inlets are formed in the left telescopic shaft, the middle transition shaft sleeve and the right end transmission shaft of the crowned tooth shaft coupler respectively, and a grease feeding lubrication scheme is adopted independently, so that the problems that a complex oil feeding assembly and a pipeline need to be additionally arranged in a common oil lubrication scheme, a long and thin through hole needs not to be processed in the transmission shaft, the mechanical property of the shaft is guaranteed, the defects that the processing difficulty of the through hole is large and the rejection rate of the transmission shaft is high are overcome, and the transmission precision is improved.
In conclusion, the crowned tooth coupling has the advantages of large axial telescopic function and good lubricating performance.
Drawings
FIG. 1 is a schematic view of the crowned tooth coupling of the present invention in an extended configuration.
Fig. 2 is an enlarged schematic view of a point a in fig. 1.
Fig. 3 is a schematic view of the crowned tooth coupling of the present invention in a contracted configuration.
Detailed Description
The invention is further illustrated by the following figures and examples.
Example 1
As can be seen from fig. 1, 2 and 3, the drum-shaped gear coupling with large axial extension function of the present invention comprises a roller end assembly at the left end, a driving end assembly at the right end, and a middle retractable transmission shaft assembly, wherein two ends of the retractable transmission shaft assembly are respectively connected with the roller end assembly and the driving end assembly; the telescopic transmission shaft assembly comprises a left telescopic shaft 4, a middle transition shaft sleeve 7, a right transmission shaft 8 and a ball 15, one end of the telescopic shaft 4 is connected with the roller end assembly, the excircle of the other end of the telescopic shaft is processed into an external spline, and an inner hole of the external spline is provided with a spring assembly 13; one end and the transmission shaft 8 of transition axle sleeve 7 are connected, and transmission shaft 8 is connected with the drive end subassembly, and the 7 other ends of transition axle sleeve are the internal spline hole, have seted up a plurality of circulation slides on its circumference lateral wall, all set up a plurality of balls 15 in every circulation slide, and ball 15, the slot part of the 4 external splines of telescopic shaft, the circulation slide three in the transition axle sleeve 7 form ball spline pair.
The ball 15 slides in the circulating slideway of the transition shaft sleeve 7, and the ball 15 exposed out of the circulating slideway is embedded into the spline groove of the telescopic shaft 4.
The axial expansion of the crowned tooth coupler adopts a ball spline pair transmission scheme, and in the expansion process of the coupler, along with the expansion and contraction of the expansion shaft 4, balls 15 in the ball spline pair rotate along with the expansion and contraction; the ball spline pair simultaneously realizes the axial large telescopic displacement function and the circumferential torque transmission function of the crowned tooth coupler.
Example 2
The invention discloses a drum-shaped gear coupling: the circulating slideways on the transition shaft sleeve 7 are uniformly distributed, the positions of the circulating slideways correspond to the positions of the grooves of the external splines on the telescopic shaft 4, and the number of the circulating slideways is consistent with that of the grooves of the external splines on the telescopic shaft 4.
The invention discloses a drum-shaped gear coupling: 4 ~ 12 spline grooves are evenly seted up along circumference to the 4 right-hand member external splines of telescopic shaft, evenly set up 4 ~ 12 circulation slides on the circumference lateral wall of transition axle sleeve 7, and 15 numbers of ball in every circulation slide are 10 ~ 24, and the diameter of ball 15 is 10mm ~ 24 mm.
Example 3
The invention discloses a drum-shaped gear coupling: the telescopic transmission shaft assembly also comprises a limiting device, and the limiting device comprises a protective cover 6 and a limiting ring 17; a small hole at the left end of the protective cover 6 is sleeved on a small excircle at the left end of the telescopic shaft 4, and a sealing ring is arranged on the contact surface of the small hole and the small excircle; a large hole at the right end of the protective cover 6 is sleeved on the excircle of the transition shaft sleeve 7, a sealing ring is arranged on the contact surface of the protective cover and the transition shaft sleeve 7, and the protective cover 6 is fixed on the transition shaft sleeve 7 through a fastening piece; the limiting ring 17 is arranged in a large inner hole formed by the transition shaft sleeve 7 and the transmission shaft 8 and is fixedly connected with the transmission shaft 8.
When the crowned tooth coupling axially retracts, the telescopic shaft 4 extends rightwards into the transition shaft sleeve 7, and the limiting ring 17 is used for maximum retraction displacement positioning; the telescopic shaft 4 extends out of the transition shaft sleeve 7 towards the left, and the protective cover 6 is used for positioning the maximum extension position.
Example 4
The drum-shaped gear coupling further comprises a sectional type lubricating system, wherein the sectional type lubricating system comprises a telescopic shaft 4, a transition shaft sleeve 7 and a transmission shaft 8 which are respectively lubricated independently, a radial grease inlet hole I3, a transverse grease inlet hole 12 and a radial grease inlet hole II 14 are arranged on the telescopic shaft 4, the radial grease inlet hole I3 is a through hole in the small excircle of the left section of the telescopic shaft 4, one end of the transverse grease inlet hole 12 is communicated with the left end face of the telescopic shaft 4, and the other end of the transverse grease inlet hole is communicated with the radial grease inlet hole I3; the radial grease inlet hole II 14 is arranged at the left end of the spline part of the telescopic shaft 4, and the inner and outer parts of the radial grease inlet hole II are respectively opened at the inner hole and the outer circle of the telescopic shaft 4; the left section of the side wall of the protective cover 6 is provided with a radial grease inlet hole III 5; and a radial grease inlet hole IV 18 is formed in the small outer circle of the right section of the transmission shaft 8.
Lubricating grease is respectively and independently fed into the telescopic shaft 4 on the left side of the coupler, the transition shaft sleeve 7 in the middle and the transmission shaft 8 on the right side of the coupler, and a roller end assembly on the left side, a large telescopic position in the middle and a driving end assembly on the right side are respectively lubricated: after being fed from a radial grease inlet hole III 5 on the protective cover 6, the lubricating grease enters a spline groove of the telescopic shaft 4 and is rolled into the whole ball spline pair through the rotation of a ball 15 to lubricate a middle large telescopic position, and meanwhile, the lubricating grease enters an inner hole lubricating spring assembly 13 through a radial grease inlet hole II 14 on the telescopic shaft 4; lubricating grease enters the transverse grease inlet 12 through the radial grease inlet I3 on the telescopic shaft 4 and is discharged from the left end of the transverse grease inlet 12, so that the left roller end assembly is lubricated; the lubricating grease enters the inner hole of the transmission shaft 8 through the radial grease inlet hole IV 18, and lubrication of the right driving end assembly is achieved.
Because the left telescopic shaft, the middle transition shaft sleeve and the right end transmission shaft are respectively lubricated by grease independently, a complex oil inlet assembly and a pipeline are not required to be additionally arranged, and a long and thin through hole is not required to be processed in the telescopic shaft, the processing rejection rate of the transmission shaft is reduced, and the rolling ball spline pair can effectively improve the lubricating quality and avoid the defect of abnormal abrasion of a transmission part when the crowned tooth coupling works.
The invention discloses a drum-shaped gear coupling: the sectional type lubricating system further comprises a radial grease discharging hole 16, wherein the radial grease discharging hole 16 is formed in the transition shaft sleeve 7, and the inner side and the outer side of the radial grease discharging hole are respectively opened in the inner hole and the outer circle of the transition shaft sleeve 7.
Example 5
The invention discloses a drum-shaped gear coupling: when the balls 15 are installed, the balls on the outer side of the slide way are positioned by the viscosity action of lubricating grease, and the kinematic viscosity range of the lubricating grease is 8-22 mm2/s。
Example 6
The invention discloses a drum-shaped gear coupling: the roller end assembly is arranged at the left end of the telescopic shaft 4 and comprises a roller end inner tooth shaft sleeve 1, a roller end outer tooth shaft sleeve 2, a connecting disc 10 and a roller end gland 11; the roller end internal tooth shaft sleeve 1 and the roller end external tooth shaft sleeve 2 are connected through a gear pair, and the external tooth shaft sleeve 2 is fixedly arranged on a telescopic shaft 4; the connecting disc 10 is arranged in a hole of the roller end inner tooth shaft sleeve 1, the left end of the connecting disc is fixedly connected with the roller end inner tooth shaft sleeve 1, and the right end of the connecting disc is tightly pressed on the left end surface of the telescopic shaft 4; the roller end gland 11 is sleeved on a small excircle at the left end of the telescopic shaft 4, a sealing ring is arranged between contact surfaces, and the left end of the roller end gland is fixedly connected with the right end surface of the roller end internal tooth shaft sleeve 1; the driving end assembly is arranged at the right end of the transmission shaft 8 and comprises a driving end external tooth shaft sleeve 9, and the driving end external tooth shaft sleeve 9 is sleeved on the transmission shaft 8 and is fixedly connected with the transmission shaft 8.
When a telescopic transmission shaft assembly of the crowned tooth coupling is assembled, firstly, balls 15 are arranged in a circulating slideway of an inner ring of a transition shaft sleeve 7, the balls exposed outside the slideway are positioned by coated lubricating grease, and the motion viscosity range of the lubricating grease is 8-22 mm2S; then the transition shaft sleeve 7 is fixed and arranged by pinsIs arranged on a transmission shaft 8 at the right end; then, the spline groove of the telescopic shaft 4 is inserted in alignment with the ball, and the mounting of the telescopic shaft is completed; and finally, fixedly connecting the protective cover 6 with the transition shaft sleeve 7 by using a pin to complete the installation of the protective cover 6.
The crowned tooth coupling has the beneficial effects that: the axial telescopic position adopts ball spline pair transmission, single-point contact of a gear pair during axial telescopic of a traditional coupler is replaced by multipoint contact between a ball group and a spline shaft, sliding friction of the gear pair or a tooth-type spline pair during axial telescopic of the traditional coupler is replaced by rolling friction between the ball group and the spline shaft, and the axial large telescopic function and the circumferential torque transmission function of the coupler are realized; meanwhile, the contact stress of the ball spline pair in the axial sliding process is small, the rolling friction force is small, and the abnormal abrasion phenomenon is avoided; secondly, the contact clearance between the ball group and the spline shaft is larger, so that lubricating grease can enter between contact surfaces more easily; in the axial extension and retraction process of the coupler, along with the extension and retraction of the telescopic shaft, the balls in the ball spline pair circularly rotate in the circulating slideway, the adjacent balls rotate and simultaneously transfer lubricating grease, inlet lubricating grease is coiled into the whole ball spline pair, and finally the whole ball spline pair is filled with lubricating grease, so that the lubricating effect is good; and the lubricating system adopts a sectional grease lubricating system, does not need to add a complex oil inlet assembly and a pipeline, does not need to process a long and thin through hole in the transmission shaft, ensures the mechanical property of the shaft, overcomes the defects of high difficulty in processing the through hole and high rejection rate of the transmission shaft, and simultaneously improves the transmission precision.
The axial telescopic position of the crowned tooth coupler adopts a ball spline pair transmission scheme, and the ball spline pair can simultaneously realize the axial large telescopic displacement function and the torque transmission function. Grease inlets are formed in the left telescopic shaft, the middle transition shaft sleeve and the right transmission shaft of the crowned tooth coupler, and grease feeding lubrication schemes are adopted respectively, so that the lubrication quality and the abrasion defect of a transmission part are effectively improved, and the working requirement of metallurgical transmission equipment is met.
In a word, the axial telescopic ball spline pair of the crowned tooth coupler can obviously improve the lubricating quality of the crowned tooth coupler, realize large axial telescopic displacement and simultaneously avoid abnormal abrasion of a transmission part, and meet the working requirement of metallurgical transmission equipment. Of course, the detailed preparation process of the present invention may further include more embodiments within the scope of the above description according to actual needs, and the present invention is not limited to the specific embodiments described above.
Claims (9)
1. The utility model provides a drum type tooth shaft coupling with big flexible function of axial which characterized in that: the automatic lubricating device comprises a roller end assembly at the left end, a driving end assembly at the right end, a middle telescopic transmission shaft assembly and a sectional type lubricating system, wherein two ends of the telescopic transmission shaft assembly are respectively connected with the roller end assembly and the driving end assembly; the telescopic transmission shaft assembly comprises a left telescopic shaft (4), a middle transition shaft sleeve (7), a right transmission shaft (8) and balls (15), one end of the telescopic shaft (4) is connected with the roller end assembly, the outer circle of the other end of the telescopic shaft is processed into an external spline, and an inner hole is provided with a spring assembly (13); one end of the transition shaft sleeve (7) is connected with the transmission shaft (8), the transmission shaft (8) is connected with the driving end assembly, the other end of the transition shaft sleeve (7) is provided with an inner spline hole, a plurality of circulation slideways are arranged on the circumferential side wall of the transition shaft sleeve, a plurality of balls (15) are arranged in each circulation slideway, and the balls (15), the groove part of the outer spline of the telescopic shaft (4) and the circulation slideways in the transition shaft sleeve (7) form a ball spline pair; the sectional type lubricating system comprises a telescopic shaft (4), a transition shaft sleeve (7) and a transmission shaft (8) which are respectively lubricated independently, wherein the telescopic shaft (4) is provided with a radial grease inlet hole I (3), a transverse grease inlet hole (12) and a radial grease inlet hole II (14), the radial grease inlet hole I (3) is a through hole in the small excircle of the left section of the telescopic shaft (4), one end of the transverse grease inlet hole (12) is communicated with the left end face of the telescopic shaft (4), and the other end of the transverse grease inlet hole is communicated with the radial grease inlet hole I (3); the radial grease inlet hole II (14) is arranged at the left end of the spline part of the telescopic shaft (4), and the inner part and the outer part of the radial grease inlet hole II are respectively opened at the inner hole and the outer circle of the telescopic shaft (4); the left section of the side wall of the protective cover (6) is provided with a radial grease inlet hole III (5); and a radial grease inlet hole IV (18) arranged on the small excircle of the right section of the transmission shaft (8).
2. The drum tooth coupling of claim 1, wherein: the balls (15) slide in the circulating slide way of the transition shaft sleeve (7), and the balls (15) exposed outside the circulating slide way are embedded into the spline grooves of the telescopic shaft (4) at the same time.
3. The drum tooth coupling of claim 2, wherein: the circulating slideways on the transition shaft sleeve (7) are uniformly distributed, the positions of the circulating slideways correspond to the positions of the groove parts of the external splines on the telescopic shaft (4), and the number of the circulating slideways is consistent with that of the grooves of the external splines on the telescopic shaft (4).
4. The drum tooth coupling of claim 3, wherein: the outer spline at the right end of the telescopic shaft (4) is uniformly provided with 4-12 spline grooves along the circumferential direction, the circumferential side wall of the transition shaft sleeve (7) is uniformly provided with 4-12 circulating slideways, the number of balls (15) in each circulating slideway is 10-24, and the diameter of each ball (15) is 10-24 mm.
5. The drum tooth coupling of claim 1, wherein: the telescopic transmission shaft assembly also comprises a limiting device, and the limiting device comprises a protective cover (6) and a limiting ring (17); a small hole at the left end of the protective cover (6) is sleeved on a small excircle at the left end of the telescopic shaft (4), and a sealing ring is arranged on the contact surface of the small hole and the small excircle; a large hole at the right end of the protective cover (6) is sleeved on the excircle of the transition shaft sleeve (7), a sealing ring is arranged on the contact surface of the protective cover and the transition shaft sleeve, and the protective cover (6) is fixed on the transition shaft sleeve (7) through a fastening piece; the limiting ring (17) is arranged in a large inner hole formed by the transition shaft sleeve (7) and the transmission shaft (8) and is fixedly connected with the transmission shaft (8).
6. The drum tooth coupling of claim 1, wherein: the sectional type lubricating system further comprises a radial grease discharging hole (16), wherein the radial grease discharging hole (16) is formed in the transition shaft sleeve (7), and the inner side and the outer side of the radial grease discharging hole are respectively opened in an inner hole and an outer circle of the transition shaft sleeve (7).
7. The drum tooth coupling of claim 1, wherein: lubricating grease is respectively and independently fed into the telescopic shaft (4) on the left side of the coupler, the transition shaft sleeve (7) in the middle and the transmission shaft (8) on the right side of the coupler, and the roller end assembly on the left side, the large telescopic position in the middle and the driving end assembly on the right side are respectively lubricated: after being fed from a radial grease inlet hole III (5) on the protective cover (6), lubricating grease enters a spline groove of the telescopic shaft (4) and is rolled into the whole ball spline pair through the rotation of a ball (15) to lubricate a middle large telescopic position, and meanwhile, the lubricating grease enters an inner hole lubricating spring assembly (13) through a radial grease inlet hole II (14) on the telescopic shaft (4); lubricating grease enters the transverse grease inlet hole (12) through the radial grease inlet hole I (3) on the telescopic shaft (4) and then goes out of the left end of the transverse grease inlet hole, so that the left roller end assembly is lubricated; and the lubricating grease enters an inner hole of the transmission shaft (8) through a radial grease inlet hole IV (18) on the transmission shaft, so that the right driving end component is lubricated.
8. The drum tooth coupling of claim 1, wherein: when the balls (15) are installed, the balls on the outer side of the slide way are positioned by the viscosity action of lubricating grease, and the kinematic viscosity range of the lubricating grease is 8-22 mm2/s。
9. The drum tooth coupling of claim 1, wherein: the roller end assembly is arranged at the left end of the telescopic shaft (4), and comprises a roller end inner tooth shaft sleeve (1), a roller end outer tooth shaft sleeve (2), a connecting disc (10) and a roller end gland (11); the roller end internal tooth shaft sleeve (1) and the roller end external tooth shaft sleeve (2) are connected through a gear pair, and the external tooth shaft sleeve (2) is fixedly arranged on the telescopic shaft (4); the connecting disc (10) is arranged in a hole of the roller end internal tooth shaft sleeve (1), the left end of the connecting disc is fixedly connected with the roller end internal tooth shaft sleeve (1), and the right end of the connecting disc is tightly pressed on the left end surface of the telescopic shaft (4); the roller end gland (11) is sleeved on a small excircle at the left end of the telescopic shaft (4), a sealing ring is arranged between contact surfaces, and the left end of the roller end gland is fixedly connected with the right end surface of the roller end internal tooth shaft sleeve (1); the drive end assembly is installed at the right end of transmission shaft (8), and the drive end assembly includes drive end external tooth axle sleeve (9), and drive end external tooth axle sleeve (9) cover is on transmission shaft (8) and with transmission shaft (8) rigid coupling.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011531367.8A CN112524167B (en) | 2020-12-22 | 2020-12-22 | Drum-shaped gear coupling with axial large-expansion function |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011531367.8A CN112524167B (en) | 2020-12-22 | 2020-12-22 | Drum-shaped gear coupling with axial large-expansion function |
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| Publication Number | Publication Date |
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| CN112524167A CN112524167A (en) | 2021-03-19 |
| CN112524167B true CN112524167B (en) | 2021-10-15 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202011531367.8A Active CN112524167B (en) | 2020-12-22 | 2020-12-22 | Drum-shaped gear coupling with axial large-expansion function |
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CA691236A (en) * | 1964-07-21 | W. Glover Earl | Ball bearing spline | |
| CH539793A (en) * | 1970-09-23 | 1973-07-31 | Beaver Prec Products Inc | Spline and ball energy transmission mechanism |
| CN104052188A (en) * | 2014-07-02 | 2014-09-17 | 上海翱锐控制系统有限公司 | Precise electric cylinder |
| CN207673716U (en) * | 2017-12-13 | 2018-07-31 | 上银科技股份有限公司 | Recycle the spline device of lubrication |
| CN208764260U (en) * | 2018-09-14 | 2019-04-19 | 常州海特赐仁传动科技有限公司 | Ball spline device and ball spline component |
| CN110873129A (en) * | 2019-12-17 | 2020-03-10 | 唐陌传动机械(无锡)有限公司 | Telescopic crowned tooth coupling with oil-gas lubrication function |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7235016B2 (en) * | 2005-02-04 | 2007-06-26 | Weasler Engineering, Inc. | Universal joint lubrication |
-
2020
- 2020-12-22 CN CN202011531367.8A patent/CN112524167B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CA691236A (en) * | 1964-07-21 | W. Glover Earl | Ball bearing spline | |
| CH539793A (en) * | 1970-09-23 | 1973-07-31 | Beaver Prec Products Inc | Spline and ball energy transmission mechanism |
| CN104052188A (en) * | 2014-07-02 | 2014-09-17 | 上海翱锐控制系统有限公司 | Precise electric cylinder |
| CN207673716U (en) * | 2017-12-13 | 2018-07-31 | 上银科技股份有限公司 | Recycle the spline device of lubrication |
| CN208764260U (en) * | 2018-09-14 | 2019-04-19 | 常州海特赐仁传动科技有限公司 | Ball spline device and ball spline component |
| CN110873129A (en) * | 2019-12-17 | 2020-03-10 | 唐陌传动机械(无锡)有限公司 | Telescopic crowned tooth coupling with oil-gas lubrication function |
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| Publication number | Publication date |
|---|---|
| CN112524167A (en) | 2021-03-19 |
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